gold/sparc.cc

   1 // sparc.cc -- sparc target support for gold.
   2
   3 // Copyright (C) 2008-2016 Free Software Foundation, Inc.
   4 // Written by David S. Miller <davem@davemloft.net>.
   5
   6 // This file is part of gold.
   7
   8 // This program is free software; you can redistribute it and/or modify
   9 // it under the terms of the GNU General Public License as published by
  10 // the Free Software Foundation; either version 3 of the License, or
  11 // (at your option) any later version.
  12
  13 // This program is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // You should have received a copy of the GNU General Public License
  19 // along with this program; if not, write to the Free Software
  20 // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  21 // MA 02110-1301, USA.
  22
  23 #include "gold.h"
  24
  25 #include <cstdlib>
  26 #include <cstdio>
  27 #include <cstring>
  28
  29 #include "elfcpp.h"
  30 #include "parameters.h"
  31 #include "reloc.h"
  32 #include "sparc.h"
  33 #include "object.h"
  34 #include "symtab.h"
  35 #include "layout.h"
  36 #include "output.h"
  37 #include "copy-relocs.h"
  38 #include "target.h"
  39 #include "target-reloc.h"
  40 #include "target-select.h"
  41 #include "tls.h"
  42 #include "errors.h"
  43 #include "gc.h"
  44
  45 namespace
  46 {
  47
  48 using namespace gold;
  49
  50 template<int size, bool big_endian>
  51 class Output_data_plt_sparc;
  52
  53 template<int size, bool big_endian>
  54 class Target_sparc : public Sized_target<size, big_endian>
  55 {
  56  public:
  57   typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section;
  58
  59   Target_sparc()
  60     : Sized_target<size, big_endian>(&sparc_info),
  61       got_(NULL), plt_(NULL), rela_dyn_(NULL), rela_ifunc_(NULL),
  62       copy_relocs_(elfcpp::R_SPARC_COPY),
  63       got_mod_index_offset_(-1U), tls_get_addr_sym_(NULL),
  64       elf_machine_(sparc_info.machine_code), elf_flags_(0),
  65       elf_flags_set_(false), register_syms_()
  66   {
  67   }
  68
  69   // Make a new symbol table entry.
  70   Sized_symbol<size>*
  71   make_symbol(const char*, elfcpp::STT, Object*, unsigned int, uint64_t);
  72
  73   // Process the relocations to determine unreferenced sections for
  74   // garbage collection.
  75   void
  76   gc_process_relocs(Symbol_table* symtab,
  77                     Layout* layout,
  78                     Sized_relobj_file<size, big_endian>* object,
  79                     unsigned int data_shndx,
  80                     unsigned int sh_type,
  81                     const unsigned char* prelocs,
  82                     size_t reloc_count,
  83                     Output_section* output_section,
  84                     bool needs_special_offset_handling,
  85                     size_t local_symbol_count,
  86                     const unsigned char* plocal_symbols);
  87
  88   // Scan the relocations to look for symbol adjustments.
  89   void
  90   scan_relocs(Symbol_table* symtab,
  91               Layout* layout,
  92               Sized_relobj_file<size, big_endian>* object,
  93               unsigned int data_shndx,
  94               unsigned int sh_type,
  95               const unsigned char* prelocs,
  96               size_t reloc_count,
  97               Output_section* output_section,
  98               bool needs_special_offset_handling,
  99               size_t local_symbol_count,
 100               const unsigned char* plocal_symbols);
 101   // Finalize the sections.
 102   void
 103   do_finalize_sections(Layout*, const Input_objects*, Symbol_table*);
 104
 105   // Return the value to use for a dynamic which requires special
 106   // treatment.
 107   uint64_t
 108   do_dynsym_value(const Symbol*) const;
 109
 110   // Relocate a section.
 111   void
 112   relocate_section(const Relocate_info<size, big_endian>*,
 113                    unsigned int sh_type,
 114                    const unsigned char* prelocs,
 115                    size_t reloc_count,
 116                    Output_section* output_section,
 117                    bool needs_special_offset_handling,
 118                    unsigned char* view,
 119                    typename elfcpp::Elf_types<size>::Elf_Addr view_address,
 120                    section_size_type view_size,
 121                    const Reloc_symbol_changes*);
 122
 123   // Scan the relocs during a relocatable link.
 124   void
 125   scan_relocatable_relocs(Symbol_table* symtab,
 126                           Layout* layout,
 127                           Sized_relobj_file<size, big_endian>* object,
 128                           unsigned int data_shndx,
 129                           unsigned int sh_type,
 130                           const unsigned char* prelocs,
 131                           size_t reloc_count,
 132                           Output_section* output_section,
 133                           bool needs_special_offset_handling,
 134                           size_t local_symbol_count,
 135                           const unsigned char* plocal_symbols,
 136                           Relocatable_relocs*);
 137
 138   // Scan the relocs for --emit-relocs.
 139   void
 140   emit_relocs_scan(Symbol_table* symtab,
 141                    Layout* layout,
 142                    Sized_relobj_file<size, big_endian>* object,
 143                    unsigned int data_shndx,
 144                    unsigned int sh_type,
 145                    const unsigned char* prelocs,
 146                    size_t reloc_count,
 147                    Output_section* output_section,
 148                    bool needs_special_offset_handling,
 149                    size_t local_symbol_count,
 150                    const unsigned char* plocal_syms,
 151                    Relocatable_relocs* rr);
 152
 153   // Emit relocations for a section.
 154   void
 155   relocate_relocs(const Relocate_info<size, big_endian>*,
 156                   unsigned int sh_type,
 157                   const unsigned char* prelocs,
 158                   size_t reloc_count,
 159                   Output_section* output_section,
 160                   typename elfcpp::Elf_types<size>::Elf_Off
 161                     offset_in_output_section,
 162                   unsigned char* view,
 163                   typename elfcpp::Elf_types<size>::Elf_Addr view_address,
 164                   section_size_type view_size,
 165                   unsigned char* reloc_view,
 166                   section_size_type reloc_view_size);
 167
 168   // Return whether SYM is defined by the ABI.
 169   bool
 170   do_is_defined_by_abi(const Symbol* sym) const
 171   { return strcmp(sym->name(), "___tls_get_addr") == 0; }
 172
 173   // Return the PLT address to use for a global symbol.
 174   uint64_t
 175   do_plt_address_for_global(const Symbol* gsym) const
 176   { return this->plt_section()->address_for_global(gsym); }
 177
 178   uint64_t
 179   do_plt_address_for_local(const Relobj* relobj, unsigned int symndx) const
 180   { return this->plt_section()->address_for_local(relobj, symndx); }
 181
 182   // Return whether there is a GOT section.
 183   bool
 184   has_got_section() const
 185   { return this->got_ != NULL; }
 186
 187   // Return the size of the GOT section.
 188   section_size_type
 189   got_size() const
 190   {
 191     gold_assert(this->got_ != NULL);
 192     return this->got_->data_size();
 193   }
 194
 195   // Return the number of entries in the GOT.
 196   unsigned int
 197   got_entry_count() const
 198   {
 199     if (this->got_ == NULL)
 200       return 0;
 201     return this->got_size() / (size / 8);
 202   }
 203
 204   // Return the address of the GOT.
 205   uint64_t
 206   got_address() const
 207   {
 208     if (this->got_ == NULL)
 209       return 0;
 210     return this->got_->address();
 211   }
 212
 213   // Return the number of entries in the PLT.
 214   unsigned int
 215   plt_entry_count() const;
 216
 217   // Return the offset of the first non-reserved PLT entry.
 218   unsigned int
 219   first_plt_entry_offset() const;
 220
 221   // Return the size of each PLT entry.
 222   unsigned int
 223   plt_entry_size() const;
 224
 225  protected:
 226   // Make an ELF object.
 227   Object*
 228   do_make_elf_object(const std::string&, Input_file*, off_t,
 229                      const elfcpp::Ehdr<size, big_endian>& ehdr);
 230
 231   void
 232   do_adjust_elf_header(unsigned char* view, int len);
 233
 234  private:
 235
 236   // The class which scans relocations.
 237   class Scan
 238   {
 239   public:
 240     Scan()
 241       : issued_non_pic_error_(false)
 242     { }
 243
 244     static inline int
 245     get_reference_flags(unsigned int r_type);
 246
 247     inline void
 248     local(Symbol_table* symtab, Layout* layout, Target_sparc* target,
 249           Sized_relobj_file<size, big_endian>* object,
 250           unsigned int data_shndx,
 251           Output_section* output_section,
 252           const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type,
 253           const elfcpp::Sym<size, big_endian>& lsym,
 254           bool is_discarded);
 255
 256     inline void
 257     global(Symbol_table* symtab, Layout* layout, Target_sparc* target,
 258            Sized_relobj_file<size, big_endian>* object,
 259            unsigned int data_shndx,
 260            Output_section* output_section,
 261            const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type,
 262            Symbol* gsym);
 263
 264     inline bool
 265     local_reloc_may_be_function_pointer(Symbol_table* , Layout* ,
 266                                         Target_sparc* ,
 267                                         Sized_relobj_file<size, big_endian>* ,
 268                                         unsigned int ,
 269                                         Output_section* ,
 270                                         const elfcpp::Rela<size, big_endian>& ,
 271                                         unsigned int ,
 272                                         const elfcpp::Sym<size, big_endian>&)
 273     { return false; }
 274
 275     inline bool
 276     global_reloc_may_be_function_pointer(Symbol_table* , Layout* ,
 277                                          Target_sparc* ,
 278                                          Sized_relobj_file<size, big_endian>* ,
 279                                          unsigned int ,
 280                                          Output_section* ,
 281                                          const elfcpp::Rela<size,
 282                                                             big_endian>& ,
 283                                          unsigned int , Symbol*)
 284     { return false; }
 285
 286
 287   private:
 288     static void
 289     unsupported_reloc_local(Sized_relobj_file<size, big_endian>*,
 290                             unsigned int r_type);
 291
 292     static void
 293     unsupported_reloc_global(Sized_relobj_file<size, big_endian>*,
 294                              unsigned int r_type, Symbol*);
 295
 296     static void
 297     generate_tls_call(Symbol_table* symtab, Layout* layout,
 298                       Target_sparc* target);
 299
 300     void
 301     check_non_pic(Relobj*, unsigned int r_type);
 302
 303     bool
 304     reloc_needs_plt_for_ifunc(Sized_relobj_file<size, big_endian>*,
 305                               unsigned int r_type);
 306
 307     // Whether we have issued an error about a non-PIC compilation.
 308     bool issued_non_pic_error_;
 309   };
 310
 311   // The class which implements relocation.
 312   class Relocate
 313   {
 314    public:
 315     Relocate()
 316       : ignore_gd_add_(false), reloc_adjust_addr_(NULL)
 317     { }
 318
 319     ~Relocate()
 320     {
 321       if (this->ignore_gd_add_)
 322         {
 323           // FIXME: This needs to specify the location somehow.
 324           gold_error(_("missing expected TLS relocation"));
 325         }
 326     }
 327
 328     // Do a relocation.  Return false if the caller should not issue
 329     // any warnings about this relocation.
 330     inline bool
 331     relocate(const Relocate_info<size, big_endian>*, unsigned int,
 332              Target_sparc*, Output_section*, size_t, const unsigned char*,
 333              const Sized_symbol<size>*, const Symbol_value<size>*,
 334              unsigned char*, typename elfcpp::Elf_types<size>::Elf_Addr,
 335              section_size_type);
 336
 337    private:
 338     // Do a TLS relocation.
 339     inline void
 340     relocate_tls(const Relocate_info<size, big_endian>*, Target_sparc* target,
 341                  size_t relnum, const elfcpp::Rela<size, big_endian>&,
 342                  unsigned int r_type, const Sized_symbol<size>*,
 343                  const Symbol_value<size>*,
 344                  unsigned char*,
 345                  typename elfcpp::Elf_types<size>::Elf_Addr,
 346                  section_size_type);
 347
 348     inline void
 349     relax_call(Target_sparc<size, big_endian>* target,
 350                unsigned char* view,
 351                const elfcpp::Rela<size, big_endian>& rela,
 352                section_size_type view_size);
 353
 354     // Ignore the next relocation which should be R_SPARC_TLS_GD_ADD
 355     bool ignore_gd_add_;
 356
 357     // If we hit a reloc at this view address, adjust it back by 4 bytes.
 358     unsigned char *reloc_adjust_addr_;
 359   };
 360
 361   // Get the GOT section, creating it if necessary.
 362   Output_data_got<size, big_endian>*
 363   got_section(Symbol_table*, Layout*);
 364
 365   // Create the PLT section.
 366   void
 367   make_plt_section(Symbol_table* symtab, Layout* layout);
 368
 369   // Create a PLT entry for a global symbol.
 370   void
 371   make_plt_entry(Symbol_table*, Layout*, Symbol*);
 372
 373   // Create a PLT entry for a local STT_GNU_IFUNC symbol.
 374   void
 375   make_local_ifunc_plt_entry(Symbol_table*, Layout*,
 376                              Sized_relobj_file<size, big_endian>* relobj,
 377                              unsigned int local_sym_index);
 378
 379   // Create a GOT entry for the TLS module index.
 380   unsigned int
 381   got_mod_index_entry(Symbol_table* symtab, Layout* layout,
 382                       Sized_relobj_file<size, big_endian>* object);
 383
 384   // Return the gsym for "__tls_get_addr".  Cache if not already
 385   // cached.
 386   Symbol*
 387   tls_get_addr_sym(Symbol_table* symtab)
 388   {
 389     if (!this->tls_get_addr_sym_)
 390       this->tls_get_addr_sym_ = symtab->lookup("__tls_get_addr", NULL);
 391     gold_assert(this->tls_get_addr_sym_);
 392     return this->tls_get_addr_sym_;
 393   }
 394
 395   // Get the PLT section.
 396   Output_data_plt_sparc<size, big_endian>*
 397   plt_section() const
 398   {
 399     gold_assert(this->plt_ != NULL);
 400     return this->plt_;
 401   }
 402
 403   // Get the dynamic reloc section, creating it if necessary.
 404   Reloc_section*
 405   rela_dyn_section(Layout*);
 406
 407   // Get the section to use for IFUNC relocations.
 408   Reloc_section*
 409   rela_ifunc_section(Layout*);
 410
 411   // Copy a relocation against a global symbol.
 412   void
 413   copy_reloc(Symbol_table* symtab, Layout* layout,
 414              Sized_relobj_file<size, big_endian>* object,
 415              unsigned int shndx, Output_section* output_section,
 416              Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc)
 417   {
 418     unsigned int r_type = elfcpp::elf_r_type<size>(reloc.get_r_info());
 419     this->copy_relocs_.copy_reloc(symtab, layout,
 420                                   symtab->get_sized_symbol<size>(sym),
 421                                   object, shndx, output_section,
 422                                   r_type, reloc.get_r_offset(),
 423                                   reloc.get_r_addend(),
 424                                   this->rela_dyn_section(layout));
 425   }
 426
 427   // Information about this specific target which we pass to the
 428   // general Target structure.
 429   static Target::Target_info sparc_info;
 430
 431   // The types of GOT entries needed for this platform.
 432   // These values are exposed to the ABI in an incremental link.
 433   // Do not renumber existing values without changing the version
 434   // number of the .gnu_incremental_inputs section.
 435   enum Got_type
 436   {
 437     GOT_TYPE_STANDARD = 0,      // GOT entry for a regular symbol
 438     GOT_TYPE_TLS_OFFSET = 1,    // GOT entry for TLS offset
 439     GOT_TYPE_TLS_PAIR = 2,      // GOT entry for TLS module/offset pair
 440   };
 441
 442   struct Register_symbol
 443   {
 444     Register_symbol()
 445       : name(NULL), shndx(0), obj(NULL)
 446     { }
 447     const char* name;
 448     unsigned int shndx;
 449     Object* obj;
 450   };
 451
 452   // The GOT section.
 453   Output_data_got<size, big_endian>* got_;
 454   // The PLT section.
 455   Output_data_plt_sparc<size, big_endian>* plt_;
 456   // The dynamic reloc section.
 457   Reloc_section* rela_dyn_;
 458   // The section to use for IFUNC relocs.
 459   Reloc_section* rela_ifunc_;
 460   // Relocs saved to avoid a COPY reloc.
 461   Copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_;
 462   // Offset of the GOT entry for the TLS module index;
 463   unsigned int got_mod_index_offset_;
 464   // Cached pointer to __tls_get_addr symbol
 465   Symbol* tls_get_addr_sym_;
 466   // Accumulated elf machine type
 467   elfcpp::Elf_Half elf_machine_;
 468   // Accumulated elf header flags
 469   elfcpp::Elf_Word elf_flags_;
 470   // Whether elf_flags_ has been set for the first time yet
 471   bool elf_flags_set_;
 472   // STT_SPARC_REGISTER symbols (%g2, %g3, %g6, %g7).
 473   Register_symbol register_syms_[4];
 474 };
 475
 476 template<>
 477 Target::Target_info Target_sparc<32, true>::sparc_info =
 478 {
 479   32,                   // size
 480   true,                 // is_big_endian
 481   elfcpp::EM_SPARC,     // machine_code
 482   false,                // has_make_symbol
 483   false,                // has_resolve
 484   false,                // has_code_fill
 485   true,                 // is_default_stack_executable
 486   false,                // can_icf_inline_merge_sections
 487   '\0',                 // wrap_char
 488   "/usr/lib/ld.so.1",   // dynamic_linker
 489   0x00010000,           // default_text_segment_address
 490   64 * 1024,            // abi_pagesize (overridable by -z max-page-size)
 491   8 * 1024,             // common_pagesize (overridable by -z common-page-size)
 492   false,                // isolate_execinstr
 493   0,                    // rosegment_gap
 494   elfcpp::SHN_UNDEF,    // small_common_shndx
 495   elfcpp::SHN_UNDEF,    // large_common_shndx
 496   0,                    // small_common_section_flags
 497   0,                    // large_common_section_flags
 498   NULL,                 // attributes_section
 499   NULL,                 // attributes_vendor
 500   "_start",             // entry_symbol_name
 501   32,                   // hash_entry_size
 502 };
 503
 504 template<>
 505 Target::Target_info Target_sparc<64, true>::sparc_info =
 506 {
 507   64,                   // size
 508   true,                 // is_big_endian
 509   elfcpp::EM_SPARCV9,   // machine_code
 510   true,                 // has_make_symbol
 511   false,                // has_resolve
 512   false,                // has_code_fill
 513   true,                 // is_default_stack_executable
 514   false,                // can_icf_inline_merge_sections
 515   '\0',                 // wrap_char
 516   "/usr/lib/sparcv9/ld.so.1",   // dynamic_linker
 517   0x100000,             // default_text_segment_address
 518   64 * 1024,            // abi_pagesize (overridable by -z max-page-size)
 519   8 * 1024,             // common_pagesize (overridable by -z common-page-size)
 520   false,                // isolate_execinstr
 521   0,                    // rosegment_gap
 522   elfcpp::SHN_UNDEF,    // small_common_shndx
 523   elfcpp::SHN_UNDEF,    // large_common_shndx
 524   0,                    // small_common_section_flags
 525   0,                    // large_common_section_flags
 526   NULL,                 // attributes_section
 527   NULL,                 // attributes_vendor
 528   "_start",             // entry_symbol_name
 529   32,                   // hash_entry_size
 530 };
 531
 532 // We have to take care here, even when operating in little-endian
 533 // mode, sparc instructions are still big endian.
 534 template<int size, bool big_endian>
 535 class Sparc_relocate_functions
 536 {
 537 private:
 538   // Do a simple relocation with the addend in the relocation.
 539   template<int valsize>
 540   static inline void
 541   rela(unsigned char* view,
 542        unsigned int right_shift,
 543        typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
 544        typename elfcpp::Swap<size, big_endian>::Valtype value,
 545        typename elfcpp::Swap<size, big_endian>::Valtype addend)
 546   {
 547     typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
 548     Valtype* wv = reinterpret_cast<Valtype*>(view);
 549     Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
 550     Valtype reloc = ((value + addend) >> right_shift);
 551
 552     val &= ~dst_mask;
 553     reloc &= dst_mask;
 554
 555     elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
 556   }
 557
 558   // Do a simple relocation using a symbol value with the addend in
 559   // the relocation.
 560   template<int valsize>
 561   static inline void
 562   rela(unsigned char* view,
 563        unsigned int right_shift,
 564        typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
 565        const Sized_relobj_file<size, big_endian>* object,
 566        const Symbol_value<size>* psymval,
 567        typename elfcpp::Swap<valsize, big_endian>::Valtype addend)
 568   {
 569     typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
 570     Valtype* wv = reinterpret_cast<Valtype*>(view);
 571     Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
 572     Valtype reloc = (psymval->value(object, addend) >> right_shift);
 573
 574     val &= ~dst_mask;
 575     reloc &= dst_mask;
 576
 577     elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
 578   }
 579
 580   // Do a simple relocation using a symbol value with the addend in
 581   // the relocation, unaligned.
 582   template<int valsize>
 583   static inline void
 584   rela_ua(unsigned char* view,
 585           unsigned int right_shift, elfcpp::Elf_Xword dst_mask,
 586           const Sized_relobj_file<size, big_endian>* object,
 587           const Symbol_value<size>* psymval,
 588           typename elfcpp::Swap<size, big_endian>::Valtype addend)
 589   {
 590     typedef typename elfcpp::Swap_unaligned<valsize,
 591             big_endian>::Valtype Valtype;
 592     unsigned char* wv = view;
 593     Valtype val = elfcpp::Swap_unaligned<valsize, big_endian>::readval(wv);
 594     Valtype reloc = (psymval->value(object, addend) >> right_shift);
 595
 596     val &= ~dst_mask;
 597     reloc &= dst_mask;
 598
 599     elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, val | reloc);
 600   }
 601
 602   // Do a simple PC relative relocation with a Symbol_value with the
 603   // addend in the relocation.
 604   template<int valsize>
 605   static inline void
 606   pcrela(unsigned char* view,
 607          unsigned int right_shift,
 608          typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
 609          const Sized_relobj_file<size, big_endian>* object,
 610          const Symbol_value<size>* psymval,
 611          typename elfcpp::Swap<size, big_endian>::Valtype addend,
 612          typename elfcpp::Elf_types<size>::Elf_Addr address)
 613   {
 614     typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
 615     Valtype* wv = reinterpret_cast<Valtype*>(view);
 616     Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
 617     Valtype reloc = ((psymval->value(object, addend) - address)
 618                      >> right_shift);
 619
 620     val &= ~dst_mask;
 621     reloc &= dst_mask;
 622
 623     elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
 624   }
 625
 626   template<int valsize>
 627   static inline void
 628   pcrela_unaligned(unsigned char* view,
 629                    const Sized_relobj_file<size, big_endian>* object,
 630                    const Symbol_value<size>* psymval,
 631                    typename elfcpp::Swap<size, big_endian>::Valtype addend,
 632                    typename elfcpp::Elf_types<size>::Elf_Addr address)
 633   {
 634     typedef typename elfcpp::Swap_unaligned<valsize,
 635             big_endian>::Valtype Valtype;
 636     unsigned char* wv = view;
 637     Valtype reloc = (psymval->value(object, addend) - address);
 638
 639     elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, reloc);
 640   }
 641
 642   typedef Sparc_relocate_functions<size, big_endian> This;
 643   typedef Sparc_relocate_functions<size, true> This_insn;
 644
 645 public:
 646   // R_SPARC_WDISP30: (Symbol + Addend - Address) >> 2
 647   static inline void
 648   wdisp30(unsigned char* view,
 649            const Sized_relobj_file<size, big_endian>* object,
 650            const Symbol_value<size>* psymval,
 651            typename elfcpp::Elf_types<size>::Elf_Addr addend,
 652            typename elfcpp::Elf_types<size>::Elf_Addr address)
 653   {
 654     This_insn::template pcrela<32>(view, 2, 0x3fffffff, object,
 655                                    psymval, addend, address);
 656   }
 657
 658   // R_SPARC_WDISP22: (Symbol + Addend - Address) >> 2
 659   static inline void
 660   wdisp22(unsigned char* view,
 661            const Sized_relobj_file<size, big_endian>* object,
 662            const Symbol_value<size>* psymval,
 663            typename elfcpp::Elf_types<size>::Elf_Addr addend,
 664            typename elfcpp::Elf_types<size>::Elf_Addr address)
 665   {
 666     This_insn::template pcrela<32>(view, 2, 0x003fffff, object,
 667                                    psymval, addend, address);
 668   }
 669
 670   // R_SPARC_WDISP19: (Symbol + Addend - Address) >> 2
 671   static inline void
 672   wdisp19(unsigned char* view,
 673           const Sized_relobj_file<size, big_endian>* object,
 674           const Symbol_value<size>* psymval,
 675           typename elfcpp::Elf_types<size>::Elf_Addr addend,
 676           typename elfcpp::Elf_types<size>::Elf_Addr address)
 677   {
 678     This_insn::template pcrela<32>(view, 2, 0x0007ffff, object,
 679                                    psymval, addend, address);
 680   }
 681
 682   // R_SPARC_WDISP16: (Symbol + Addend - Address) >> 2
 683   static inline void
 684   wdisp16(unsigned char* view,
 685           const Sized_relobj_file<size, big_endian>* object,
 686           const Symbol_value<size>* psymval,
 687           typename elfcpp::Elf_types<size>::Elf_Addr addend,
 688           typename elfcpp::Elf_types<size>::Elf_Addr address)
 689   {
 690     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
 691     Valtype* wv = reinterpret_cast<Valtype*>(view);
 692     Valtype val = elfcpp::Swap<32, true>::readval(wv);
 693     Valtype reloc = ((psymval->value(object, addend) - address)
 694                      >> 2);
 695
 696     // The relocation value is split between the low 14 bits,
 697     // and bits 20-21.
 698     val &= ~((0x3 << 20) | 0x3fff);
 699     reloc = (((reloc & 0xc000) << (20 - 14))
 700              | (reloc & 0x3ffff));
 701
 702     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
 703   }
 704
 705   // R_SPARC_WDISP10: (Symbol + Addend - Address) >> 2
 706   static inline void
 707   wdisp10(unsigned char* view,
 708           const Sized_relobj_file<size, big_endian>* object,
 709           const Symbol_value<size>* psymval,
 710           typename elfcpp::Elf_types<size>::Elf_Addr addend,
 711           typename elfcpp::Elf_types<size>::Elf_Addr address)
 712   {
 713     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
 714     Valtype* wv = reinterpret_cast<Valtype*>(view);
 715     Valtype val = elfcpp::Swap<32, true>::readval(wv);
 716     Valtype reloc = ((psymval->value(object, addend) - address)
 717                      >> 2);
 718
 719     // The relocation value is split between the low bits 5-12,
 720     // and high bits 19-20.
 721     val &= ~((0x3 << 19) | (0xff << 5));
 722     reloc = (((reloc & 0x300) << (19 - 8))
 723              | ((reloc & 0xff) << (5 - 0)));
 724
 725     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
 726   }
 727
 728   // R_SPARC_PC22: (Symbol + Addend - Address) >> 10
 729   static inline void
 730   pc22(unsigned char* view,
 731        const Sized_relobj_file<size, big_endian>* object,
 732        const Symbol_value<size>* psymval,
 733        typename elfcpp::Elf_types<size>::Elf_Addr addend,
 734        typename elfcpp::Elf_types<size>::Elf_Addr address)
 735   {
 736     This_insn::template pcrela<32>(view, 10, 0x003fffff, object,
 737                                    psymval, addend, address);
 738   }
 739
 740   // R_SPARC_PC10: (Symbol + Addend - Address) & 0x3ff
 741   static inline void
 742   pc10(unsigned char* view,
 743        const Sized_relobj_file<size, big_endian>* object,
 744        const Symbol_value<size>* psymval,
 745        typename elfcpp::Elf_types<size>::Elf_Addr addend,
 746        typename elfcpp::Elf_types<size>::Elf_Addr address)
 747   {
 748     This_insn::template pcrela<32>(view, 0, 0x000003ff, object,
 749                                    psymval, addend, address);
 750   }
 751
 752   // R_SPARC_HI22: (Symbol + Addend) >> 10
 753   static inline void
 754   hi22(unsigned char* view,
 755        typename elfcpp::Elf_types<size>::Elf_Addr value,
 756        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 757   {
 758     This_insn::template rela<32>(view, 10, 0x003fffff, value, addend);
 759   }
 760
 761   // R_SPARC_HI22: (Symbol + Addend) >> 10
 762   static inline void
 763   hi22(unsigned char* view,
 764        const Sized_relobj_file<size, big_endian>* object,
 765        const Symbol_value<size>* psymval,
 766        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 767   {
 768     This_insn::template rela<32>(view, 10, 0x003fffff, object, psymval, addend);
 769   }
 770
 771   // R_SPARC_PCPLT22: (Symbol + Addend - Address) >> 10
 772   static inline void
 773   pcplt22(unsigned char* view,
 774           const Sized_relobj_file<size, big_endian>* object,
 775           const Symbol_value<size>* psymval,
 776           typename elfcpp::Elf_types<size>::Elf_Addr addend,
 777           typename elfcpp::Elf_types<size>::Elf_Addr address)
 778   {
 779     This_insn::template pcrela<32>(view, 10, 0x003fffff, object,
 780                                    psymval, addend, address);
 781   }
 782
 783   // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
 784   static inline void
 785   lo10(unsigned char* view,
 786        typename elfcpp::Elf_types<size>::Elf_Addr value,
 787        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 788   {
 789     This_insn::template rela<32>(view, 0, 0x000003ff, value, addend);
 790   }
 791
 792   // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
 793   static inline void
 794   lo10(unsigned char* view,
 795        const Sized_relobj_file<size, big_endian>* object,
 796        const Symbol_value<size>* psymval,
 797        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 798   {
 799     This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend);
 800   }
 801
 802   // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
 803   static inline void
 804   lo10(unsigned char* view,
 805        const Sized_relobj_file<size, big_endian>* object,
 806        const Symbol_value<size>* psymval,
 807        typename elfcpp::Elf_types<size>::Elf_Addr addend,
 808        typename elfcpp::Elf_types<size>::Elf_Addr address)
 809   {
 810     This_insn::template pcrela<32>(view, 0, 0x000003ff, object,
 811                                    psymval, addend, address);
 812   }
 813
 814   // R_SPARC_OLO10: ((Symbol + Addend) & 0x3ff) + Addend2
 815   static inline void
 816   olo10(unsigned char* view,
 817         const Sized_relobj_file<size, big_endian>* object,
 818         const Symbol_value<size>* psymval,
 819         typename elfcpp::Elf_types<size>::Elf_Addr addend,
 820         typename elfcpp::Elf_types<size>::Elf_Addr addend2)
 821   {
 822     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
 823     Valtype* wv = reinterpret_cast<Valtype*>(view);
 824     Valtype val = elfcpp::Swap<32, true>::readval(wv);
 825     Valtype reloc = psymval->value(object, addend);
 826
 827     val &= ~0x1fff;
 828     reloc &= 0x3ff;
 829     reloc += addend2;
 830     reloc &= 0x1fff;
 831
 832     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
 833   }
 834
 835   // R_SPARC_22: (Symbol + Addend)
 836   static inline void
 837   rela32_22(unsigned char* view,
 838             const Sized_relobj_file<size, big_endian>* object,
 839             const Symbol_value<size>* psymval,
 840             typename elfcpp::Elf_types<size>::Elf_Addr addend)
 841   {
 842     This_insn::template rela<32>(view, 0, 0x003fffff, object, psymval, addend);
 843   }
 844
 845   // R_SPARC_13: (Symbol + Addend)
 846   static inline void
 847   rela32_13(unsigned char* view,
 848             typename elfcpp::Elf_types<size>::Elf_Addr value,
 849             typename elfcpp::Elf_types<size>::Elf_Addr addend)
 850   {
 851     This_insn::template rela<32>(view, 0, 0x00001fff, value, addend);
 852   }
 853
 854   // R_SPARC_13: (Symbol + Addend)
 855   static inline void
 856   rela32_13(unsigned char* view,
 857             const Sized_relobj_file<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, 0x00001fff, object, psymval, addend);
 862   }
 863
 864   // R_SPARC_UA16: (Symbol + Addend)
 865   static inline void
 866   ua16(unsigned char* view,
 867        const Sized_relobj_file<size, big_endian>* object,
 868        const Symbol_value<size>* psymval,
 869        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 870   {
 871     This::template rela_ua<16>(view, 0, 0xffff, object, psymval, addend);
 872   }
 873
 874   // R_SPARC_UA32: (Symbol + Addend)
 875   static inline void
 876   ua32(unsigned char* view,
 877        const Sized_relobj_file<size, big_endian>* object,
 878        const Symbol_value<size>* psymval,
 879        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 880   {
 881     This::template rela_ua<32>(view, 0, 0xffffffff, object, psymval, addend);
 882   }
 883
 884   // R_SPARC_UA64: (Symbol + Addend)
 885   static inline void
 886   ua64(unsigned char* view,
 887        const Sized_relobj_file<size, big_endian>* object,
 888        const Symbol_value<size>* psymval,
 889        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 890   {
 891     This::template rela_ua<64>(view, 0, ~(elfcpp::Elf_Xword) 0,
 892                                object, psymval, addend);
 893   }
 894
 895   // R_SPARC_DISP8: (Symbol + Addend - Address)
 896   static inline void
 897   disp8(unsigned char* view,
 898         const Sized_relobj_file<size, big_endian>* object,
 899         const Symbol_value<size>* psymval,
 900         typename elfcpp::Elf_types<size>::Elf_Addr addend,
 901         typename elfcpp::Elf_types<size>::Elf_Addr address)
 902   {
 903     This::template pcrela_unaligned<8>(view, object, psymval,
 904                                        addend, address);
 905   }
 906
 907   // R_SPARC_DISP16: (Symbol + Addend - Address)
 908   static inline void
 909   disp16(unsigned char* view,
 910          const Sized_relobj_file<size, big_endian>* object,
 911          const Symbol_value<size>* psymval,
 912          typename elfcpp::Elf_types<size>::Elf_Addr addend,
 913          typename elfcpp::Elf_types<size>::Elf_Addr address)
 914   {
 915     This::template pcrela_unaligned<16>(view, object, psymval,
 916                                         addend, address);
 917   }
 918
 919   // R_SPARC_DISP32: (Symbol + Addend - Address)
 920   static inline void
 921   disp32(unsigned char* view,
 922          const Sized_relobj_file<size, big_endian>* object,
 923          const Symbol_value<size>* psymval,
 924          typename elfcpp::Elf_types<size>::Elf_Addr addend,
 925          typename elfcpp::Elf_types<size>::Elf_Addr address)
 926   {
 927     This::template pcrela_unaligned<32>(view, object, psymval,
 928                                         addend, address);
 929   }
 930
 931   // R_SPARC_DISP64: (Symbol + Addend - Address)
 932   static inline void
 933   disp64(unsigned char* view,
 934          const Sized_relobj_file<size, big_endian>* object,
 935          const Symbol_value<size>* psymval,
 936          elfcpp::Elf_Xword addend,
 937          typename elfcpp::Elf_types<size>::Elf_Addr address)
 938   {
 939     This::template pcrela_unaligned<64>(view, object, psymval,
 940                                         addend, address);
 941   }
 942
 943   // R_SPARC_H34: (Symbol + Addend) >> 12
 944   static inline void
 945   h34(unsigned char* view,
 946       const Sized_relobj_file<size, big_endian>* object,
 947       const Symbol_value<size>* psymval,
 948       typename elfcpp::Elf_types<size>::Elf_Addr  addend)
 949   {
 950     This_insn::template rela<32>(view, 12, 0x003fffff, object, psymval, addend);
 951   }
 952
 953   // R_SPARC_H44: (Symbol + Addend) >> 22
 954   static inline void
 955   h44(unsigned char* view,
 956       const Sized_relobj_file<size, big_endian>* object,
 957       const Symbol_value<size>* psymval,
 958       typename elfcpp::Elf_types<size>::Elf_Addr  addend)
 959   {
 960     This_insn::template rela<32>(view, 22, 0x003fffff, object, psymval, addend);
 961   }
 962
 963   // R_SPARC_M44: ((Symbol + Addend) >> 12) & 0x3ff
 964   static inline void
 965   m44(unsigned char* view,
 966       const Sized_relobj_file<size, big_endian>* object,
 967       const Symbol_value<size>* psymval,
 968       typename elfcpp::Elf_types<size>::Elf_Addr  addend)
 969   {
 970     This_insn::template rela<32>(view, 12, 0x000003ff, object, psymval, addend);
 971   }
 972
 973   // R_SPARC_L44: (Symbol + Addend) & 0xfff
 974   static inline void
 975   l44(unsigned char* view,
 976       const Sized_relobj_file<size, big_endian>* object,
 977       const Symbol_value<size>* psymval,
 978       typename elfcpp::Elf_types<size>::Elf_Addr  addend)
 979   {
 980     This_insn::template rela<32>(view, 0, 0x00000fff, object, psymval, addend);
 981   }
 982
 983   // R_SPARC_HH22: (Symbol + Addend) >> 42
 984   static inline void
 985   hh22(unsigned char* view,
 986        const Sized_relobj_file<size, big_endian>* object,
 987        const Symbol_value<size>* psymval,
 988        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 989   {
 990     This_insn::template rela<32>(view, 42, 0x003fffff, object, psymval, addend);
 991   }
 992
 993   // R_SPARC_PC_HH22: (Symbol + Addend - Address) >> 42
 994   static inline void
 995   pc_hh22(unsigned char* view,
 996           const Sized_relobj_file<size, big_endian>* object,
 997           const Symbol_value<size>* psymval,
 998           typename elfcpp::Elf_types<size>::Elf_Addr addend,
 999           typename elfcpp::Elf_types<size>::Elf_Addr address)
1000   {
1001     This_insn::template pcrela<32>(view, 42, 0x003fffff, object,
1002                                    psymval, addend, address);
1003   }
1004
1005   // R_SPARC_HM10: ((Symbol + Addend) >> 32) & 0x3ff
1006   static inline void
1007   hm10(unsigned char* view,
1008        const Sized_relobj_file<size, big_endian>* object,
1009        const Symbol_value<size>* psymval,
1010        typename elfcpp::Elf_types<size>::Elf_Addr addend)
1011   {
1012     This_insn::template rela<32>(view, 32, 0x000003ff, object, psymval, addend);
1013   }
1014
1015   // R_SPARC_PC_HM10: ((Symbol + Addend - Address) >> 32) & 0x3ff
1016   static inline void
1017   pc_hm10(unsigned char* view,
1018           const Sized_relobj_file<size, big_endian>* object,
1019           const Symbol_value<size>* psymval,
1020           typename elfcpp::Elf_types<size>::Elf_Addr addend,
1021           typename elfcpp::Elf_types<size>::Elf_Addr address)
1022   {
1023     This_insn::template pcrela<32>(view, 32, 0x000003ff, object,
1024                                    psymval, addend, address);
1025   }
1026
1027   // R_SPARC_11: (Symbol + Addend)
1028   static inline void
1029   rela32_11(unsigned char* view,
1030             const Sized_relobj_file<size, big_endian>* object,
1031             const Symbol_value<size>* psymval,
1032             typename elfcpp::Elf_types<size>::Elf_Addr addend)
1033   {
1034     This_insn::template rela<32>(view, 0, 0x000007ff, object, psymval, addend);
1035   }
1036
1037   // R_SPARC_10: (Symbol + Addend)
1038   static inline void
1039   rela32_10(unsigned char* view,
1040             const Sized_relobj_file<size, big_endian>* object,
1041             const Symbol_value<size>* psymval,
1042             typename elfcpp::Elf_types<size>::Elf_Addr addend)
1043   {
1044     This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend);
1045   }
1046
1047   // R_SPARC_7: (Symbol + Addend)
1048   static inline void
1049   rela32_7(unsigned char* view,
1050            const Sized_relobj_file<size, big_endian>* object,
1051            const Symbol_value<size>* psymval,
1052            typename elfcpp::Elf_types<size>::Elf_Addr addend)
1053   {
1054     This_insn::template rela<32>(view, 0, 0x0000007f, object, psymval, addend);
1055   }
1056
1057   // R_SPARC_6: (Symbol + Addend)
1058   static inline void
1059   rela32_6(unsigned char* view,
1060            const Sized_relobj_file<size, big_endian>* object,
1061            const Symbol_value<size>* psymval,
1062            typename elfcpp::Elf_types<size>::Elf_Addr addend)
1063   {
1064     This_insn::template rela<32>(view, 0, 0x0000003f, object, psymval, addend);
1065   }
1066
1067   // R_SPARC_5: (Symbol + Addend)
1068   static inline void
1069   rela32_5(unsigned char* view,
1070            const Sized_relobj_file<size, big_endian>* object,
1071            const Symbol_value<size>* psymval,
1072            typename elfcpp::Elf_types<size>::Elf_Addr addend)
1073   {
1074     This_insn::template rela<32>(view, 0, 0x0000001f, object, psymval, addend);
1075   }
1076
1077   // R_SPARC_TLS_LDO_HIX22: @dtpoff(Symbol + Addend) >> 10
1078   static inline void
1079   ldo_hix22(unsigned char* view,
1080             typename elfcpp::Elf_types<size>::Elf_Addr value,
1081             typename elfcpp::Elf_types<size>::Elf_Addr addend)
1082   {
1083     This_insn::hi22(view, value, addend);
1084   }
1085
1086   // R_SPARC_TLS_LDO_LOX10: @dtpoff(Symbol + Addend) & 0x3ff
1087   static inline void
1088   ldo_lox10(unsigned char* view,
1089             typename elfcpp::Elf_types<size>::Elf_Addr value,
1090             typename elfcpp::Elf_types<size>::Elf_Addr addend)
1091   {
1092     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
1093     Valtype* wv = reinterpret_cast<Valtype*>(view);
1094     Valtype val = elfcpp::Swap<32, true>::readval(wv);
1095     Valtype reloc = (value + addend);
1096
1097     val &= ~0x1fff;
1098     reloc &= 0x3ff;
1099
1100     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
1101   }
1102
1103   // R_SPARC_TLS_LE_HIX22: (@tpoff(Symbol + Addend) ^ 0xffffffffffffffff) >> 10
1104   static inline void
1105   hix22(unsigned char* view,
1106         typename elfcpp::Elf_types<size>::Elf_Addr value,
1107         typename elfcpp::Elf_types<size>::Elf_Addr addend)
1108   {
1109     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
1110     Valtype* wv = reinterpret_cast<Valtype*>(view);
1111     Valtype val = elfcpp::Swap<32, true>::readval(wv);
1112     Valtype reloc = (value + addend);
1113
1114     val &= ~0x3fffff;
1115
1116     reloc ^= ~(Valtype)0;
1117     reloc >>= 10;
1118
1119     reloc &= 0x3fffff;
1120
1121     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
1122   }
1123
1124   // R_SPARC_GOTDATA_OP_HIX22: @gdopoff(Symbol + Addend) >> 10
1125   static inline void
1126   gdop_hix22(unsigned char* view,
1127              typename elfcpp::Elf_types<size>::Elf_Addr value)
1128   {
1129     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
1130     Valtype* wv = reinterpret_cast<Valtype*>(view);
1131     Valtype val = elfcpp::Swap<32, true>::readval(wv);
1132     int32_t reloc = static_cast<int32_t>(value);
1133
1134     val &= ~0x3fffff;
1135
1136     if (reloc < 0)
1137       reloc ^= ~static_cast<int32_t>(0);
1138     reloc >>= 10;
1139
1140     reloc &= 0x3fffff;
1141
1142     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
1143   }
1144
1145   // R_SPARC_HIX22: ((Symbol + Addend) ^ 0xffffffffffffffff) >> 10
1146   static inline void
1147   hix22(unsigned char* view,
1148         const Sized_relobj_file<size, big_endian>* object,
1149         const Symbol_value<size>* psymval,
1150         typename elfcpp::Elf_types<size>::Elf_Addr addend)
1151   {
1152     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
1153     Valtype* wv = reinterpret_cast<Valtype*>(view);
1154     Valtype val = elfcpp::Swap<32, true>::readval(wv);
1155     Valtype reloc = psymval->value(object, addend);
1156
1157     val &= ~0x3fffff;
1158
1159     reloc ^= ~(Valtype)0;
1160     reloc >>= 10;
1161
1162     reloc &= 0x3fffff;
1163
1164     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
1165   }
1166
1167
1168   // R_SPARC_TLS_LE_LOX10: (@tpoff(Symbol + Addend) & 0x3ff) | 0x1c00
1169   static inline void
1170   lox10(unsigned char* view,
1171         typename elfcpp::Elf_types<size>::Elf_Addr value,
1172         typename elfcpp::Elf_types<size>::Elf_Addr addend)
1173   {
1174     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
1175     Valtype* wv = reinterpret_cast<Valtype*>(view);
1176     Valtype val = elfcpp::Swap<32, true>::readval(wv);
1177     Valtype reloc = (value + addend);
1178
1179     val &= ~0x1fff;
1180     reloc &= 0x3ff;
1181     reloc |= 0x1c00;
1182
1183     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
1184   }
1185
1186   // R_SPARC_GOTDATA_OP_LOX10: (@gdopoff(Symbol + Addend) & 0x3ff) | 0x1c00
1187   static inline void
1188   gdop_lox10(unsigned char* view,
1189              typename elfcpp::Elf_types<size>::Elf_Addr value)
1190   {
1191     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
1192     Valtype* wv = reinterpret_cast<Valtype*>(view);
1193     Valtype val = elfcpp::Swap<32, true>::readval(wv);
1194     int32_t reloc = static_cast<int32_t>(value);
1195
1196     if (reloc < 0)
1197       reloc = (reloc & 0x3ff) | 0x1c00;
1198     else
1199       reloc = (reloc & 0x3ff);
1200
1201     val &= ~0x1fff;
1202     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
1203   }
1204
1205   // R_SPARC_LOX10: ((Symbol + Addend) & 0x3ff) | 0x1c00
1206   static inline void
1207   lox10(unsigned char* view,
1208         const Sized_relobj_file<size, big_endian>* object,
1209         const Symbol_value<size>* psymval,
1210         typename elfcpp::Elf_types<size>::Elf_Addr addend)
1211   {
1212     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
1213     Valtype* wv = reinterpret_cast<Valtype*>(view);
1214     Valtype val = elfcpp::Swap<32, true>::readval(wv);
1215     Valtype reloc = psymval->value(object, addend);
1216
1217     val &= ~0x1fff;
1218     reloc &= 0x3ff;
1219     reloc |= 0x1c00;
1220
1221     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
1222   }
1223 };
1224
1225 // Get the GOT section, creating it if necessary.
1226
1227 template<int size, bool big_endian>
1228 Output_data_got<size, big_endian>*
1229 Target_sparc<size, big_endian>::got_section(Symbol_table* symtab,
1230                                             Layout* layout)
1231 {
1232   if (this->got_ == NULL)
1233     {
1234       gold_assert(symtab != NULL && layout != NULL);
1235
1236       this->got_ = new Output_data_got<size, big_endian>();
1237
1238       layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS,
1239                                       (elfcpp::SHF_ALLOC
1240                                        | elfcpp::SHF_WRITE),
1241                                       this->got_, ORDER_RELRO, true);
1242
1243       // Define _GLOBAL_OFFSET_TABLE_ at the start of the .got section.
1244       symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL,
1245                                     Symbol_table::PREDEFINED,
1246                                     this->got_,
1247                                     0, 0, elfcpp::STT_OBJECT,
1248                                     elfcpp::STB_LOCAL,
1249                                     elfcpp::STV_HIDDEN, 0,
1250                                     false, false);
1251     }
1252
1253   return this->got_;
1254 }
1255
1256 // Get the dynamic reloc section, creating it if necessary.
1257
1258 template<int size, bool big_endian>
1259 typename Target_sparc<size, big_endian>::Reloc_section*
1260 Target_sparc<size, big_endian>::rela_dyn_section(Layout* layout)
1261 {
1262   if (this->rela_dyn_ == NULL)
1263     {
1264       gold_assert(layout != NULL);
1265       this->rela_dyn_ = new Reloc_section(parameters->options().combreloc());
1266       layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA,
1267                                       elfcpp::SHF_ALLOC, this->rela_dyn_,
1268                                       ORDER_DYNAMIC_RELOCS, false);
1269     }
1270   return this->rela_dyn_;
1271 }
1272
1273 // Get the section to use for IFUNC relocs, creating it if
1274 // necessary.  These go in .rela.dyn, but only after all other dynamic
1275 // relocations.  They need to follow the other dynamic relocations so
1276 // that they can refer to global variables initialized by those
1277 // relocs.
1278
1279 template<int size, bool big_endian>
1280 typename Target_sparc<size, big_endian>::Reloc_section*
1281 Target_sparc<size, big_endian>::rela_ifunc_section(Layout* layout)
1282 {
1283   if (this->rela_ifunc_ == NULL)
1284     {
1285       // Make sure we have already created the dynamic reloc section.
1286       this->rela_dyn_section(layout);
1287       this->rela_ifunc_ = new Reloc_section(false);
1288       layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA,
1289                                       elfcpp::SHF_ALLOC, this->rela_ifunc_,
1290                                       ORDER_DYNAMIC_RELOCS, false);
1291       gold_assert(this->rela_dyn_->output_section()
1292                   == this->rela_ifunc_->output_section());
1293     }
1294   return this->rela_ifunc_;
1295 }
1296
1297 // A class to handle the PLT data.
1298
1299 template<int size, bool big_endian>
1300 class Output_data_plt_sparc : public Output_section_data
1301 {
1302  public:
1303   typedef Output_data_reloc<elfcpp::SHT_RELA, true,
1304                             size, big_endian> Reloc_section;
1305
1306   Output_data_plt_sparc(Layout*);
1307
1308   // Add an entry to the PLT.
1309   void add_entry(Symbol_table* symtab, Layout* layout, Symbol* gsym);
1310
1311   // Add an entry to the PLT for a local STT_GNU_IFUNC symbol.
1312   unsigned int
1313   add_local_ifunc_entry(Symbol_table*, Layout*,
1314                         Sized_relobj_file<size, big_endian>* relobj,
1315                         unsigned int local_sym_index);
1316
1317   // Return the .rela.plt section data.
1318   const Reloc_section* rel_plt() const
1319   {
1320     return this->rel_;
1321   }
1322
1323   // Return where the IFUNC relocations should go.
1324   Reloc_section*
1325   rela_ifunc(Symbol_table*, Layout*);
1326
1327   void
1328   emit_pending_ifunc_relocs();
1329
1330   // Return whether we created a section for IFUNC relocations.
1331   bool
1332   has_ifunc_section() const
1333   { return this->ifunc_rel_ != NULL; }
1334
1335   // Return the number of PLT entries.
1336   unsigned int
1337   entry_count() const
1338   { return this->count_ + this->ifunc_count_; }
1339
1340   // Return the offset of the first non-reserved PLT entry.
1341   static unsigned int
1342   first_plt_entry_offset()
1343   { return 4 * base_plt_entry_size; }
1344
1345   // Return the size of a PLT entry.
1346   static unsigned int
1347   get_plt_entry_size()
1348   { return base_plt_entry_size; }
1349
1350   // Return the PLT address to use for a global symbol.
1351   uint64_t
1352   address_for_global(const Symbol*);
1353
1354   // Return the PLT address to use for a local symbol.
1355   uint64_t
1356   address_for_local(const Relobj*, unsigned int symndx);
1357
1358  protected:
1359   void do_adjust_output_section(Output_section* os);
1360
1361   // Write to a map file.
1362   void
1363   do_print_to_mapfile(Mapfile* mapfile) const
1364   { mapfile->print_output_data(this, _("** PLT")); }
1365
1366  private:
1367   // The size of an entry in the PLT.
1368   static const int base_plt_entry_size = (size == 32 ? 12 : 32);
1369
1370   static const unsigned int plt_entries_per_block = 160;
1371   static const unsigned int plt_insn_chunk_size = 24;
1372   static const unsigned int plt_pointer_chunk_size = 8;
1373   static const unsigned int plt_block_size =
1374     (plt_entries_per_block
1375      * (plt_insn_chunk_size + plt_pointer_chunk_size));
1376
1377   section_offset_type
1378   plt_index_to_offset(unsigned int index)
1379   {
1380     section_offset_type offset;
1381
1382     if (size == 32 || index < 32768)
1383       offset = index * base_plt_entry_size;
1384     else
1385       {
1386         unsigned int ext_index = index - 32768;
1387
1388         offset = (32768 * base_plt_entry_size)
1389           + ((ext_index / plt_entries_per_block)
1390              * plt_block_size)
1391           + ((ext_index % plt_entries_per_block)
1392              * plt_insn_chunk_size);
1393       }
1394     return offset;
1395   }
1396
1397   // Set the final size.
1398   void
1399   set_final_data_size()
1400   {
1401     unsigned int full_count = this->entry_count() + 4;
1402     unsigned int extra = (size == 32 ? 4 : 0);
1403     section_offset_type sz = plt_index_to_offset(full_count) + extra;
1404
1405     return this->set_data_size(sz);
1406   }
1407
1408   // Write out the PLT data.
1409   void
1410   do_write(Output_file*);
1411
1412   struct Global_ifunc
1413   {
1414     Reloc_section* rel;
1415     Symbol* gsym;
1416     unsigned int plt_index;
1417   };
1418
1419   struct Local_ifunc
1420   {
1421     Reloc_section* rel;
1422     Sized_relobj_file<size, big_endian>* object;
1423     unsigned int local_sym_index;
1424     unsigned int plt_index;
1425   };
1426
1427   // The reloc section.
1428   Reloc_section* rel_;
1429   // The IFUNC relocations, if necessary.  These must follow the
1430   // regular relocations.
1431   Reloc_section* ifunc_rel_;
1432   // The number of PLT entries.
1433   unsigned int count_;
1434   // The number of PLT entries for IFUNC symbols.
1435   unsigned int ifunc_count_;
1436   // Global STT_GNU_IFUNC symbols.
1437   std::vector<Global_ifunc> global_ifuncs_;
1438   // Local STT_GNU_IFUNC symbols.
1439   std::vector<Local_ifunc> local_ifuncs_;
1440 };
1441
1442 // Define the constants as required by C++ standard.
1443
1444 template<int size, bool big_endian>
1445 const int Output_data_plt_sparc<size, big_endian>::base_plt_entry_size;
1446
1447 template<int size, bool big_endian>
1448 const unsigned int
1449 Output_data_plt_sparc<size, big_endian>::plt_entries_per_block;
1450
1451 template<int size, bool big_endian>
1452 const unsigned int Output_data_plt_sparc<size, big_endian>::plt_insn_chunk_size;
1453
1454 template<int size, bool big_endian>
1455 const unsigned int
1456 Output_data_plt_sparc<size, big_endian>::plt_pointer_chunk_size;
1457
1458 template<int size, bool big_endian>
1459 const unsigned int Output_data_plt_sparc<size, big_endian>::plt_block_size;
1460
1461 // Create the PLT section.  The ordinary .got section is an argument,
1462 // since we need to refer to the start.
1463
1464 template<int size, bool big_endian>
1465 Output_data_plt_sparc<size, big_endian>::Output_data_plt_sparc(Layout* layout)
1466   : Output_section_data(size == 32 ? 4 : 8), ifunc_rel_(NULL),
1467     count_(0), ifunc_count_(0), global_ifuncs_(), local_ifuncs_()
1468 {
1469   this->rel_ = new Reloc_section(false);
1470   layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA,
1471                                   elfcpp::SHF_ALLOC, this->rel_,
1472                                   ORDER_DYNAMIC_PLT_RELOCS, false);
1473 }
1474
1475 template<int size, bool big_endian>
1476 void
1477 Output_data_plt_sparc<size, big_endian>::do_adjust_output_section(Output_section* os)
1478 {
1479   os->set_entsize(0);
1480 }
1481
1482 // Add an entry to the PLT.
1483
1484 template<int size, bool big_endian>
1485 void
1486 Output_data_plt_sparc<size, big_endian>::add_entry(Symbol_table* symtab,
1487                                                    Layout* layout,
1488                                                    Symbol* gsym)
1489 {
1490   gold_assert(!gsym->has_plt_offset());
1491
1492   section_offset_type plt_offset;
1493   unsigned int index;
1494
1495   if (gsym->type() == elfcpp::STT_GNU_IFUNC
1496       && gsym->can_use_relative_reloc(false))
1497     {
1498       index = this->ifunc_count_;
1499       plt_offset = plt_index_to_offset(index);
1500       gsym->set_plt_offset(plt_offset);
1501       ++this->ifunc_count_;
1502       Reloc_section* rel = this->rela_ifunc(symtab, layout);
1503
1504       struct Global_ifunc gi;
1505       gi.rel = rel;
1506       gi.gsym = gsym;
1507       gi.plt_index = index;
1508       this->global_ifuncs_.push_back(gi);
1509     }
1510   else
1511     {
1512       plt_offset = plt_index_to_offset(this->count_ + 4);
1513       gsym->set_plt_offset(plt_offset);
1514       ++this->count_;
1515       gsym->set_needs_dynsym_entry();
1516       this->rel_->add_global(gsym, elfcpp::R_SPARC_JMP_SLOT, this,
1517                              plt_offset, 0);
1518     }
1519
1520   // Note that we don't need to save the symbol.  The contents of the
1521   // PLT are independent of which symbols are used.  The symbols only
1522   // appear in the relocations.
1523 }
1524
1525 template<int size, bool big_endian>
1526 unsigned int
1527 Output_data_plt_sparc<size, big_endian>::add_local_ifunc_entry(
1528     Symbol_table* symtab,
1529     Layout* layout,
1530     Sized_relobj_file<size, big_endian>* relobj,
1531     unsigned int local_sym_index)
1532 {
1533   unsigned int index = this->ifunc_count_;
1534   section_offset_type plt_offset;
1535
1536   plt_offset = plt_index_to_offset(index);
1537   ++this->ifunc_count_;
1538
1539   Reloc_section* rel = this->rela_ifunc(symtab, layout);
1540
1541   struct Local_ifunc li;
1542   li.rel = rel;
1543   li.object = relobj;
1544   li.local_sym_index = local_sym_index;
1545   li.plt_index = index;
1546   this->local_ifuncs_.push_back(li);
1547
1548   return plt_offset;
1549 }
1550
1551 // Emit any pending IFUNC plt relocations.
1552
1553 template<int size, bool big_endian>
1554 void
1555 Output_data_plt_sparc<size, big_endian>::emit_pending_ifunc_relocs()
1556 {
1557   // Emit any pending IFUNC relocs.
1558   for (typename std::vector<Global_ifunc>::const_iterator p =
1559          this->global_ifuncs_.begin();
1560        p != this->global_ifuncs_.end();
1561        ++p)
1562     {
1563       section_offset_type plt_offset;
1564       unsigned int index;
1565
1566       index = this->count_ + p->plt_index + 4;
1567       plt_offset = this->plt_index_to_offset(index);
1568       p->rel->add_symbolless_global_addend(p->gsym, elfcpp::R_SPARC_JMP_IREL,
1569                                            this, plt_offset, 0);
1570     }
1571
1572   for (typename std::vector<Local_ifunc>::const_iterator p =
1573          this->local_ifuncs_.begin();
1574        p != this->local_ifuncs_.end();
1575        ++p)
1576     {
1577       section_offset_type plt_offset;
1578       unsigned int index;
1579
1580       index = this->count_ + p->plt_index + 4;
1581       plt_offset = this->plt_index_to_offset(index);
1582       p->rel->add_symbolless_local_addend(p->object, p->local_sym_index,
1583                                           elfcpp::R_SPARC_JMP_IREL,
1584                                           this, plt_offset, 0);
1585     }
1586 }
1587
1588 // Return where the IFUNC relocations should go in the PLT.  These
1589 // follow the non-IFUNC relocations.
1590
1591 template<int size, bool big_endian>
1592 typename Output_data_plt_sparc<size, big_endian>::Reloc_section*
1593 Output_data_plt_sparc<size, big_endian>::rela_ifunc(
1594         Symbol_table* symtab,
1595         Layout* layout)
1596 {
1597   if (this->ifunc_rel_ == NULL)
1598     {
1599       this->ifunc_rel_ = new Reloc_section(false);
1600       layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA,
1601                                       elfcpp::SHF_ALLOC, this->ifunc_rel_,
1602                                       ORDER_DYNAMIC_PLT_RELOCS, false);
1603       gold_assert(this->ifunc_rel_->output_section()
1604                   == this->rel_->output_section());
1605
1606       if (parameters->doing_static_link())
1607         {
1608           // A statically linked executable will only have a .rel.plt
1609           // section to hold R_SPARC_IRELATIVE and R_SPARC_JMP_IREL
1610           // relocs for STT_GNU_IFUNC symbols.  The library will use
1611           // these symbols to locate the IRELATIVE and JMP_IREL relocs
1612           // at program startup time.
1613           symtab->define_in_output_data("__rela_iplt_start", NULL,
1614                                         Symbol_table::PREDEFINED,
1615                                         this->ifunc_rel_, 0, 0,
1616                                         elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL,
1617                                         elfcpp::STV_HIDDEN, 0, false, true);
1618           symtab->define_in_output_data("__rela_iplt_end", NULL,
1619                                         Symbol_table::PREDEFINED,
1620                                         this->ifunc_rel_, 0, 0,
1621                                         elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL,
1622                                         elfcpp::STV_HIDDEN, 0, true, true);
1623         }
1624     }
1625   return this->ifunc_rel_;
1626 }
1627
1628 // Return the PLT address to use for a global symbol.
1629
1630 template<int size, bool big_endian>
1631 uint64_t
1632 Output_data_plt_sparc<size, big_endian>::address_for_global(const Symbol* gsym)
1633 {
1634   uint64_t offset = 0;
1635   if (gsym->type() == elfcpp::STT_GNU_IFUNC
1636       && gsym->can_use_relative_reloc(false))
1637     offset = plt_index_to_offset(this->count_ + 4);
1638   return this->address() + offset + gsym->plt_offset();
1639 }
1640
1641 // Return the PLT address to use for a local symbol.  These are always
1642 // IRELATIVE relocs.
1643
1644 template<int size, bool big_endian>
1645 uint64_t
1646 Output_data_plt_sparc<size, big_endian>::address_for_local(
1647         const Relobj* object,
1648         unsigned int r_sym)
1649 {
1650   return (this->address()
1651           + plt_index_to_offset(this->count_ + 4)
1652           + object->local_plt_offset(r_sym));
1653 }
1654
1655 static const unsigned int sparc_nop = 0x01000000;
1656 static const unsigned int sparc_sethi_g1 = 0x03000000;
1657 static const unsigned int sparc_branch_always = 0x30800000;
1658 static const unsigned int sparc_branch_always_pt = 0x30680000;
1659 static const unsigned int sparc_mov = 0x80100000;
1660 static const unsigned int sparc_mov_g0_o0 = 0x90100000;
1661 static const unsigned int sparc_mov_o7_g5 = 0x8a10000f;
1662 static const unsigned int sparc_call_plus_8 = 0x40000002;
1663 static const unsigned int sparc_ldx_o7_imm_g1 = 0xc25be000;
1664 static const unsigned int sparc_jmpl_o7_g1_g1 = 0x83c3c001;
1665 static const unsigned int sparc_mov_g5_o7 = 0x9e100005;
1666
1667 // Write out the PLT.
1668
1669 template<int size, bool big_endian>
1670 void
1671 Output_data_plt_sparc<size, big_endian>::do_write(Output_file* of)
1672 {
1673   const off_t offset = this->offset();
1674   const section_size_type oview_size =
1675     convert_to_section_size_type(this->data_size());
1676   unsigned char* const oview = of->get_output_view(offset, oview_size);
1677   unsigned char* pov = oview;
1678
1679   memset(pov, 0, base_plt_entry_size * 4);
1680   pov += this->first_plt_entry_offset();
1681
1682   unsigned int plt_offset = base_plt_entry_size * 4;
1683   const unsigned int count = this->entry_count();
1684
1685   if (size == 64)
1686     {
1687       unsigned int limit;
1688
1689       limit = (count > 32768 ? 32768 : count);
1690
1691       for (unsigned int i = 0; i < limit; ++i)
1692         {
1693           elfcpp::Swap<32, true>::writeval(pov + 0x00,
1694                                            sparc_sethi_g1 + plt_offset);
1695           elfcpp::Swap<32, true>::writeval(pov + 0x04,
1696                                            sparc_branch_always_pt +
1697                                            (((base_plt_entry_size -
1698                                               (plt_offset + 4)) >> 2) &
1699                                             0x7ffff));
1700           elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
1701           elfcpp::Swap<32, true>::writeval(pov + 0x0c, sparc_nop);
1702           elfcpp::Swap<32, true>::writeval(pov + 0x10, sparc_nop);
1703           elfcpp::Swap<32, true>::writeval(pov + 0x14, sparc_nop);
1704           elfcpp::Swap<32, true>::writeval(pov + 0x18, sparc_nop);
1705           elfcpp::Swap<32, true>::writeval(pov + 0x1c, sparc_nop);
1706
1707           pov += base_plt_entry_size;
1708           plt_offset += base_plt_entry_size;
1709         }
1710
1711       if (count > 32768)
1712         {
1713           unsigned int ext_cnt = count - 32768;
1714           unsigned int blks = ext_cnt / plt_entries_per_block;
1715
1716           for (unsigned int i = 0; i < blks; ++i)
1717             {
1718               unsigned int data_off = (plt_entries_per_block
1719                                        * plt_insn_chunk_size) - 4;
1720
1721               for (unsigned int j = 0; j < plt_entries_per_block; ++j)
1722                 {
1723                   elfcpp::Swap<32, true>::writeval(pov + 0x00,
1724                                                    sparc_mov_o7_g5);
1725                   elfcpp::Swap<32, true>::writeval(pov + 0x04,
1726                                                    sparc_call_plus_8);
1727                   elfcpp::Swap<32, true>::writeval(pov + 0x08,
1728                                                    sparc_nop);
1729                   elfcpp::Swap<32, true>::writeval(pov + 0x0c,
1730                                                    sparc_ldx_o7_imm_g1 +
1731                                                    (data_off & 0x1fff));
1732                   elfcpp::Swap<32, true>::writeval(pov + 0x10,
1733                                                    sparc_jmpl_o7_g1_g1);
1734                   elfcpp::Swap<32, true>::writeval(pov + 0x14,
1735                                                    sparc_mov_g5_o7);
1736
1737                   elfcpp::Swap<64, big_endian>::writeval(
1738                                 pov + 0x4 + data_off,
1739                                 (elfcpp::Elf_Xword) (oview - (pov + 0x04)));
1740
1741                   pov += plt_insn_chunk_size;
1742                   data_off -= 16;
1743                 }
1744             }
1745
1746           unsigned int sub_blk_cnt = ext_cnt % plt_entries_per_block;
1747           for (unsigned int i = 0; i < sub_blk_cnt; ++i)
1748             {
1749               unsigned int data_off = (sub_blk_cnt
1750                                        * plt_insn_chunk_size) - 4;
1751
1752               for (unsigned int j = 0; j < plt_entries_per_block; ++j)
1753                 {
1754                   elfcpp::Swap<32, true>::writeval(pov + 0x00,
1755                                                    sparc_mov_o7_g5);
1756                   elfcpp::Swap<32, true>::writeval(pov + 0x04,
1757                                                    sparc_call_plus_8);
1758                   elfcpp::Swap<32, true>::writeval(pov + 0x08,
1759                                                    sparc_nop);
1760                   elfcpp::Swap<32, true>::writeval(pov + 0x0c,
1761                                                    sparc_ldx_o7_imm_g1 +
1762                                                    (data_off & 0x1fff));
1763                   elfcpp::Swap<32, true>::writeval(pov + 0x10,
1764                                                    sparc_jmpl_o7_g1_g1);
1765                   elfcpp::Swap<32, true>::writeval(pov + 0x14,
1766                                                    sparc_mov_g5_o7);
1767
1768                   elfcpp::Swap<64, big_endian>::writeval(
1769                                 pov + 0x4 + data_off,
1770                                 (elfcpp::Elf_Xword) (oview - (pov + 0x04)));
1771
1772                   pov += plt_insn_chunk_size;
1773                   data_off -= 16;
1774                 }
1775             }
1776         }
1777     }
1778   else
1779     {
1780       for (unsigned int i = 0; i < count; ++i)
1781         {
1782           elfcpp::Swap<32, true>::writeval(pov + 0x00,
1783                                            sparc_sethi_g1 + plt_offset);
1784           elfcpp::Swap<32, true>::writeval(pov + 0x04,
1785                                            sparc_branch_always +
1786                                            (((- (plt_offset + 4)) >> 2) &
1787                                             0x003fffff));
1788           elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
1789
1790           pov += base_plt_entry_size;
1791           plt_offset += base_plt_entry_size;
1792         }
1793
1794       elfcpp::Swap<32, true>::writeval(pov, sparc_nop);
1795       pov += 4;
1796     }
1797
1798   gold_assert(static_cast<section_size_type>(pov - oview) == oview_size);
1799
1800   of->write_output_view(offset, oview_size, oview);
1801 }
1802
1803 // Create the PLT section.
1804
1805 template<int size, bool big_endian>
1806 void
1807 Target_sparc<size, big_endian>::make_plt_section(Symbol_table* symtab,
1808                                                  Layout* layout)
1809 {
1810   // Create the GOT sections first.
1811   this->got_section(symtab, layout);
1812
1813   // Ensure that .rela.dyn always appears before .rela.plt  This is
1814   // necessary due to how, on Sparc and some other targets, .rela.dyn
1815   // needs to include .rela.plt in it's range.
1816   this->rela_dyn_section(layout);
1817
1818   this->plt_ = new Output_data_plt_sparc<size, big_endian>(layout);
1819   layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS,
1820                                   (elfcpp::SHF_ALLOC
1821                                    | elfcpp::SHF_EXECINSTR
1822                                    | elfcpp::SHF_WRITE),
1823                                   this->plt_, ORDER_NON_RELRO_FIRST, false);
1824
1825   // Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section.
1826   symtab->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL,
1827                                 Symbol_table::PREDEFINED,
1828                                 this->plt_,
1829                                 0, 0, elfcpp::STT_OBJECT,
1830                                 elfcpp::STB_LOCAL,
1831                                 elfcpp::STV_HIDDEN, 0,
1832                                 false, false);
1833 }
1834
1835 // Create a PLT entry for a global symbol.
1836
1837 template<int size, bool big_endian>
1838 void
1839 Target_sparc<size, big_endian>::make_plt_entry(Symbol_table* symtab,
1840                                                Layout* layout,
1841                                                Symbol* gsym)
1842 {
1843   if (gsym->has_plt_offset())
1844     return;
1845
1846   if (this->plt_ == NULL)
1847     this->make_plt_section(symtab, layout);
1848
1849   this->plt_->add_entry(symtab, layout, gsym);
1850 }
1851
1852 // Make a PLT entry for a local STT_GNU_IFUNC symbol.
1853
1854 template<int size, bool big_endian>
1855 void
1856 Target_sparc<size, big_endian>::make_local_ifunc_plt_entry(
1857         Symbol_table* symtab,
1858         Layout* layout,
1859         Sized_relobj_file<size, big_endian>* relobj,
1860         unsigned int local_sym_index)
1861 {
1862   if (relobj->local_has_plt_offset(local_sym_index))
1863     return;
1864   if (this->plt_ == NULL)
1865     this->make_plt_section(symtab, layout);
1866   unsigned int plt_offset = this->plt_->add_local_ifunc_entry(symtab, layout,
1867                                                               relobj,
1868                                                               local_sym_index);
1869   relobj->set_local_plt_offset(local_sym_index, plt_offset);
1870 }
1871
1872 // Return the number of entries in the PLT.
1873
1874 template<int size, bool big_endian>
1875 unsigned int
1876 Target_sparc<size, big_endian>::plt_entry_count() const
1877 {
1878   if (this->plt_ == NULL)
1879     return 0;
1880   return this->plt_->entry_count();
1881 }
1882
1883 // Return the offset of the first non-reserved PLT entry.
1884
1885 template<int size, bool big_endian>
1886 unsigned int
1887 Target_sparc<size, big_endian>::first_plt_entry_offset() const
1888 {
1889   return Output_data_plt_sparc<size, big_endian>::first_plt_entry_offset();
1890 }
1891
1892 // Return the size of each PLT entry.
1893
1894 template<int size, bool big_endian>
1895 unsigned int
1896 Target_sparc<size, big_endian>::plt_entry_size() const
1897 {
1898   return Output_data_plt_sparc<size, big_endian>::get_plt_entry_size();
1899 }
1900
1901 // Create a GOT entry for the TLS module index.
1902
1903 template<int size, bool big_endian>
1904 unsigned int
1905 Target_sparc<size, big_endian>::got_mod_index_entry(
1906      Symbol_table* symtab,
1907      Layout* layout,
1908      Sized_relobj_file<size, big_endian>* object)
1909 {
1910   if (this->got_mod_index_offset_ == -1U)
1911     {
1912       gold_assert(symtab != NULL && layout != NULL && object != NULL);
1913       Reloc_section* rela_dyn = this->rela_dyn_section(layout);
1914       Output_data_got<size, big_endian>* got;
1915       unsigned int got_offset;
1916
1917       got = this->got_section(symtab, layout);
1918       got_offset = got->add_constant(0);
1919       rela_dyn->add_local(object, 0,
1920                           (size == 64 ?
1921                            elfcpp::R_SPARC_TLS_DTPMOD64 :
1922                            elfcpp::R_SPARC_TLS_DTPMOD32), got,
1923                           got_offset, 0);
1924       got->add_constant(0);
1925       this->got_mod_index_offset_ = got_offset;
1926     }
1927   return this->got_mod_index_offset_;
1928 }
1929
1930 // Optimize the TLS relocation type based on what we know about the
1931 // symbol.  IS_FINAL is true if the final address of this symbol is
1932 // known at link time.
1933
1934 static tls::Tls_optimization
1935 optimize_tls_reloc(bool is_final, int r_type)
1936 {
1937   // If we are generating a shared library, then we can't do anything
1938   // in the linker.
1939   if (parameters->options().shared())
1940     return tls::TLSOPT_NONE;
1941
1942   switch (r_type)
1943     {
1944     case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1945     case elfcpp::R_SPARC_TLS_GD_LO10:
1946     case elfcpp::R_SPARC_TLS_GD_ADD:
1947     case elfcpp::R_SPARC_TLS_GD_CALL:
1948       // These are General-Dynamic which permits fully general TLS
1949       // access.  Since we know that we are generating an executable,
1950       // we can convert this to Initial-Exec.  If we also know that
1951       // this is a local symbol, we can further switch to Local-Exec.
1952       if (is_final)
1953         return tls::TLSOPT_TO_LE;
1954       return tls::TLSOPT_TO_IE;
1955
1956     case elfcpp::R_SPARC_TLS_LDM_HI22:  // Local-dynamic
1957     case elfcpp::R_SPARC_TLS_LDM_LO10:
1958     case elfcpp::R_SPARC_TLS_LDM_ADD:
1959     case elfcpp::R_SPARC_TLS_LDM_CALL:
1960       // This is Local-Dynamic, which refers to a local symbol in the
1961       // dynamic TLS block.  Since we know that we generating an
1962       // executable, we can switch to Local-Exec.
1963       return tls::TLSOPT_TO_LE;
1964
1965     case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
1966     case elfcpp::R_SPARC_TLS_LDO_LOX10:
1967     case elfcpp::R_SPARC_TLS_LDO_ADD:
1968       // Another type of Local-Dynamic relocation.
1969       return tls::TLSOPT_TO_LE;
1970
1971     case elfcpp::R_SPARC_TLS_IE_HI22:   // Initial-exec
1972     case elfcpp::R_SPARC_TLS_IE_LO10:
1973     case elfcpp::R_SPARC_TLS_IE_LD:
1974     case elfcpp::R_SPARC_TLS_IE_LDX:
1975     case elfcpp::R_SPARC_TLS_IE_ADD:
1976       // These are Initial-Exec relocs which get the thread offset
1977       // from the GOT.  If we know that we are linking against the
1978       // local symbol, we can switch to Local-Exec, which links the
1979       // thread offset into the instruction.
1980       if (is_final)
1981         return tls::TLSOPT_TO_LE;
1982       return tls::TLSOPT_NONE;
1983
1984     case elfcpp::R_SPARC_TLS_LE_HIX22:  // Local-exec
1985     case elfcpp::R_SPARC_TLS_LE_LOX10:
1986       // When we already have Local-Exec, there is nothing further we
1987       // can do.
1988       return tls::TLSOPT_NONE;
1989
1990     default:
1991       gold_unreachable();
1992     }
1993 }
1994
1995 // Get the Reference_flags for a particular relocation.
1996
1997 template<int size, bool big_endian>
1998 int
1999 Target_sparc<size, big_endian>::Scan::get_reference_flags(unsigned int r_type)
2000 {
2001   r_type &= 0xff;
2002   switch (r_type)
2003     {
2004     case elfcpp::R_SPARC_NONE:
2005     case elfcpp::R_SPARC_REGISTER:
2006     case elfcpp::R_SPARC_GNU_VTINHERIT:
2007     case elfcpp::R_SPARC_GNU_VTENTRY:
2008       // No symbol reference.
2009       return 0;
2010
2011     case elfcpp::R_SPARC_UA64:
2012     case elfcpp::R_SPARC_64:
2013     case elfcpp::R_SPARC_HIX22:
2014     case elfcpp::R_SPARC_LOX10:
2015     case elfcpp::R_SPARC_H34:
2016     case elfcpp::R_SPARC_H44:
2017     case elfcpp::R_SPARC_M44:
2018     case elfcpp::R_SPARC_L44:
2019     case elfcpp::R_SPARC_HH22:
2020     case elfcpp::R_SPARC_HM10:
2021     case elfcpp::R_SPARC_LM22:
2022     case elfcpp::R_SPARC_HI22:
2023     case elfcpp::R_SPARC_LO10:
2024     case elfcpp::R_SPARC_OLO10:
2025     case elfcpp::R_SPARC_UA32:
2026     case elfcpp::R_SPARC_32:
2027     case elfcpp::R_SPARC_UA16:
2028     case elfcpp::R_SPARC_16:
2029     case elfcpp::R_SPARC_11:
2030     case elfcpp::R_SPARC_10:
2031     case elfcpp::R_SPARC_8:
2032     case elfcpp::R_SPARC_7:
2033     case elfcpp::R_SPARC_6:
2034     case elfcpp::R_SPARC_5:
2035       return Symbol::ABSOLUTE_REF;
2036
2037     case elfcpp::R_SPARC_DISP8:
2038     case elfcpp::R_SPARC_DISP16:
2039     case elfcpp::R_SPARC_DISP32:
2040     case elfcpp::R_SPARC_DISP64:
2041     case elfcpp::R_SPARC_PC_HH22:
2042     case elfcpp::R_SPARC_PC_HM10:
2043     case elfcpp::R_SPARC_PC_LM22:
2044     case elfcpp::R_SPARC_PC10:
2045     case elfcpp::R_SPARC_PC22:
2046     case elfcpp::R_SPARC_WDISP30:
2047     case elfcpp::R_SPARC_WDISP22:
2048     case elfcpp::R_SPARC_WDISP19:
2049     case elfcpp::R_SPARC_WDISP16:
2050     case elfcpp::R_SPARC_WDISP10:
2051       return Symbol::RELATIVE_REF;
2052
2053     case elfcpp::R_SPARC_PLT64:
2054     case elfcpp::R_SPARC_PLT32:
2055     case elfcpp::R_SPARC_HIPLT22:
2056     case elfcpp::R_SPARC_LOPLT10:
2057     case elfcpp::R_SPARC_PCPLT10:
2058       return Symbol::FUNCTION_CALL | Symbol::ABSOLUTE_REF;
2059
2060     case elfcpp::R_SPARC_PCPLT32:
2061     case elfcpp::R_SPARC_PCPLT22:
2062     case elfcpp::R_SPARC_WPLT30:
2063       return Symbol::FUNCTION_CALL | Symbol::RELATIVE_REF;
2064
2065     case elfcpp::R_SPARC_GOTDATA_OP:
2066     case elfcpp::R_SPARC_GOTDATA_OP_HIX22:
2067     case elfcpp::R_SPARC_GOTDATA_OP_LOX10:
2068     case elfcpp::R_SPARC_GOT10:
2069     case elfcpp::R_SPARC_GOT13:
2070     case elfcpp::R_SPARC_GOT22:
2071       // Absolute in GOT.
2072       return Symbol::ABSOLUTE_REF;
2073
2074     case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2075     case elfcpp::R_SPARC_TLS_GD_LO10:
2076     case elfcpp::R_SPARC_TLS_GD_ADD:
2077     case elfcpp::R_SPARC_TLS_GD_CALL:
2078     case elfcpp::R_SPARC_TLS_LDM_HI22:  // Local-dynamic
2079     case elfcpp::R_SPARC_TLS_LDM_LO10:
2080     case elfcpp::R_SPARC_TLS_LDM_ADD:
2081     case elfcpp::R_SPARC_TLS_LDM_CALL:
2082     case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
2083     case elfcpp::R_SPARC_TLS_LDO_LOX10:
2084     case elfcpp::R_SPARC_TLS_LDO_ADD:
2085     case elfcpp::R_SPARC_TLS_LE_HIX22:
2086     case elfcpp::R_SPARC_TLS_LE_LOX10:
2087     case elfcpp::R_SPARC_TLS_IE_HI22:   // Initial-exec
2088     case elfcpp::R_SPARC_TLS_IE_LO10:
2089     case elfcpp::R_SPARC_TLS_IE_LD:
2090     case elfcpp::R_SPARC_TLS_IE_LDX:
2091     case elfcpp::R_SPARC_TLS_IE_ADD:
2092       return Symbol::TLS_REF;
2093
2094     case elfcpp::R_SPARC_COPY:
2095     case elfcpp::R_SPARC_GLOB_DAT:
2096     case elfcpp::R_SPARC_JMP_SLOT:
2097     case elfcpp::R_SPARC_JMP_IREL:
2098     case elfcpp::R_SPARC_RELATIVE:
2099     case elfcpp::R_SPARC_IRELATIVE:
2100     case elfcpp::R_SPARC_TLS_DTPMOD64:
2101     case elfcpp::R_SPARC_TLS_DTPMOD32:
2102     case elfcpp::R_SPARC_TLS_DTPOFF64:
2103     case elfcpp::R_SPARC_TLS_DTPOFF32:
2104     case elfcpp::R_SPARC_TLS_TPOFF64:
2105     case elfcpp::R_SPARC_TLS_TPOFF32:
2106     default:
2107       // Not expected.  We will give an error later.
2108       return 0;
2109     }
2110 }
2111
2112 // Generate a PLT entry slot for a call to __tls_get_addr
2113 template<int size, bool big_endian>
2114 void
2115 Target_sparc<size, big_endian>::Scan::generate_tls_call(Symbol_table* symtab,
2116                                                         Layout* layout,
2117                                                         Target_sparc<size, big_endian>* target)
2118 {
2119   Symbol* gsym = target->tls_get_addr_sym(symtab);
2120
2121   target->make_plt_entry(symtab, layout, gsym);
2122 }
2123
2124 // Report an unsupported relocation against a local symbol.
2125
2126 template<int size, bool big_endian>
2127 void
2128 Target_sparc<size, big_endian>::Scan::unsupported_reloc_local(
2129                         Sized_relobj_file<size, big_endian>* object,
2130                         unsigned int r_type)
2131 {
2132   gold_error(_("%s: unsupported reloc %u against local symbol"),
2133              object->name().c_str(), r_type);
2134 }
2135
2136 // We are about to emit a dynamic relocation of type R_TYPE.  If the
2137 // dynamic linker does not support it, issue an error.
2138
2139 template<int size, bool big_endian>
2140 void
2141 Target_sparc<size, big_endian>::Scan::check_non_pic(Relobj* object, unsigned int r_type)
2142 {
2143   gold_assert(r_type != elfcpp::R_SPARC_NONE);
2144
2145   if (size == 64)
2146     {
2147       switch (r_type)
2148         {
2149           // These are the relocation types supported by glibc for sparc 64-bit.
2150         case elfcpp::R_SPARC_RELATIVE:
2151         case elfcpp::R_SPARC_IRELATIVE:
2152         case elfcpp::R_SPARC_COPY:
2153         case elfcpp::R_SPARC_64:
2154         case elfcpp::R_SPARC_GLOB_DAT:
2155         case elfcpp::R_SPARC_JMP_SLOT:
2156         case elfcpp::R_SPARC_JMP_IREL:
2157         case elfcpp::R_SPARC_TLS_DTPMOD64:
2158         case elfcpp::R_SPARC_TLS_DTPOFF64:
2159         case elfcpp::R_SPARC_TLS_TPOFF64:
2160         case elfcpp::R_SPARC_TLS_LE_HIX22:
2161         case elfcpp::R_SPARC_TLS_LE_LOX10:
2162         case elfcpp::R_SPARC_8:
2163         case elfcpp::R_SPARC_16:
2164         case elfcpp::R_SPARC_DISP8:
2165         case elfcpp::R_SPARC_DISP16:
2166         case elfcpp::R_SPARC_DISP32:
2167         case elfcpp::R_SPARC_WDISP30:
2168         case elfcpp::R_SPARC_LO10:
2169         case elfcpp::R_SPARC_HI22:
2170         case elfcpp::R_SPARC_OLO10:
2171         case elfcpp::R_SPARC_H34:
2172         case elfcpp::R_SPARC_H44:
2173         case elfcpp::R_SPARC_M44:
2174         case elfcpp::R_SPARC_L44:
2175         case elfcpp::R_SPARC_HH22:
2176         case elfcpp::R_SPARC_HM10:
2177         case elfcpp::R_SPARC_LM22:
2178         case elfcpp::R_SPARC_UA16:
2179         case elfcpp::R_SPARC_UA32:
2180         case elfcpp::R_SPARC_UA64:
2181           return;
2182
2183         default:
2184           break;
2185         }
2186     }
2187   else
2188     {
2189       switch (r_type)
2190         {
2191           // These are the relocation types supported by glibc for sparc 32-bit.
2192         case elfcpp::R_SPARC_RELATIVE:
2193         case elfcpp::R_SPARC_IRELATIVE:
2194         case elfcpp::R_SPARC_COPY:
2195         case elfcpp::R_SPARC_GLOB_DAT:
2196         case elfcpp::R_SPARC_32:
2197         case elfcpp::R_SPARC_JMP_SLOT:
2198         case elfcpp::R_SPARC_JMP_IREL:
2199         case elfcpp::R_SPARC_TLS_DTPMOD32:
2200         case elfcpp::R_SPARC_TLS_DTPOFF32:
2201         case elfcpp::R_SPARC_TLS_TPOFF32:
2202         case elfcpp::R_SPARC_TLS_LE_HIX22:
2203         case elfcpp::R_SPARC_TLS_LE_LOX10:
2204         case elfcpp::R_SPARC_8:
2205         case elfcpp::R_SPARC_16:
2206         case elfcpp::R_SPARC_DISP8:
2207         case elfcpp::R_SPARC_DISP16:
2208         case elfcpp::R_SPARC_DISP32:
2209         case elfcpp::R_SPARC_LO10:
2210         case elfcpp::R_SPARC_WDISP30:
2211         case elfcpp::R_SPARC_HI22:
2212         case elfcpp::R_SPARC_UA16:
2213         case elfcpp::R_SPARC_UA32:
2214           return;
2215
2216         default:
2217           break;
2218         }
2219     }
2220
2221   // This prevents us from issuing more than one error per reloc
2222   // section.  But we can still wind up issuing more than one
2223   // error per object file.
2224   if (this->issued_non_pic_error_)
2225     return;
2226   gold_assert(parameters->options().output_is_position_independent());
2227   object->error(_("requires unsupported dynamic reloc; "
2228                   "recompile with -fPIC"));
2229   this->issued_non_pic_error_ = true;
2230   return;
2231 }
2232
2233 // Return whether we need to make a PLT entry for a relocation of the
2234 // given type against a STT_GNU_IFUNC symbol.
2235
2236 template<int size, bool big_endian>
2237 bool
2238 Target_sparc<size, big_endian>::Scan::reloc_needs_plt_for_ifunc(
2239      Sized_relobj_file<size, big_endian>* object,
2240      unsigned int r_type)
2241 {
2242   int flags = Scan::get_reference_flags(r_type);
2243   if (flags & Symbol::TLS_REF)
2244     gold_error(_("%s: unsupported TLS reloc %u for IFUNC symbol"),
2245                object->name().c_str(), r_type);
2246   return flags != 0;
2247 }
2248
2249 // Scan a relocation for a local symbol.
2250
2251 template<int size, bool big_endian>
2252 inline void
2253 Target_sparc<size, big_endian>::Scan::local(
2254                         Symbol_table* symtab,
2255                         Layout* layout,
2256                         Target_sparc<size, big_endian>* target,
2257                         Sized_relobj_file<size, big_endian>* object,
2258                         unsigned int data_shndx,
2259                         Output_section* output_section,
2260                         const elfcpp::Rela<size, big_endian>& reloc,
2261                         unsigned int r_type,
2262                         const elfcpp::Sym<size, big_endian>& lsym,
2263                         bool is_discarded)
2264 {
2265   if (is_discarded)
2266     return;
2267
2268   bool is_ifunc = lsym.get_st_type() == elfcpp::STT_GNU_IFUNC;
2269   unsigned int orig_r_type = r_type;
2270   r_type &= 0xff;
2271
2272   if (is_ifunc
2273       && this->reloc_needs_plt_for_ifunc(object, r_type))
2274     {
2275       unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
2276       target->make_local_ifunc_plt_entry(symtab, layout, object, r_sym);
2277     }
2278
2279   switch (r_type)
2280     {
2281     case elfcpp::R_SPARC_NONE:
2282     case elfcpp::R_SPARC_REGISTER:
2283     case elfcpp::R_SPARC_GNU_VTINHERIT:
2284     case elfcpp::R_SPARC_GNU_VTENTRY:
2285       break;
2286
2287     case elfcpp::R_SPARC_64:
2288     case elfcpp::R_SPARC_32:
2289       // If building a shared library (or a position-independent
2290       // executable), we need to create a dynamic relocation for
2291       // this location. The relocation applied at link time will
2292       // apply the link-time value, so we flag the location with
2293       // an R_SPARC_RELATIVE relocation so the dynamic loader can
2294       // relocate it easily.
2295       if (parameters->options().output_is_position_independent())
2296         {
2297           Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2298           unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
2299           rela_dyn->add_local_relative(object, r_sym, elfcpp::R_SPARC_RELATIVE,
2300                                        output_section, data_shndx,
2301                                        reloc.get_r_offset(),
2302                                        reloc.get_r_addend(), is_ifunc);
2303         }
2304       break;
2305
2306     case elfcpp::R_SPARC_HIX22:
2307     case elfcpp::R_SPARC_LOX10:
2308     case elfcpp::R_SPARC_H34:
2309     case elfcpp::R_SPARC_H44:
2310     case elfcpp::R_SPARC_M44:
2311     case elfcpp::R_SPARC_L44:
2312     case elfcpp::R_SPARC_HH22:
2313     case elfcpp::R_SPARC_HM10:
2314     case elfcpp::R_SPARC_LM22:
2315     case elfcpp::R_SPARC_UA64:
2316     case elfcpp::R_SPARC_UA32:
2317     case elfcpp::R_SPARC_UA16:
2318     case elfcpp::R_SPARC_HI22:
2319     case elfcpp::R_SPARC_LO10:
2320     case elfcpp::R_SPARC_OLO10:
2321     case elfcpp::R_SPARC_16:
2322     case elfcpp::R_SPARC_11:
2323     case elfcpp::R_SPARC_10:
2324     case elfcpp::R_SPARC_8:
2325     case elfcpp::R_SPARC_7:
2326     case elfcpp::R_SPARC_6:
2327     case elfcpp::R_SPARC_5:
2328       // If building a shared library (or a position-independent
2329       // executable), we need to create a dynamic relocation for
2330       // this location.
2331       if (parameters->options().output_is_position_independent())
2332         {
2333           Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2334           unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
2335
2336           check_non_pic(object, r_type);
2337           if (lsym.get_st_type() != elfcpp::STT_SECTION)
2338             {
2339               rela_dyn->add_local(object, r_sym, orig_r_type, output_section,
2340                                   data_shndx, reloc.get_r_offset(),
2341                                   reloc.get_r_addend());
2342             }
2343           else
2344             {
2345               gold_assert(lsym.get_st_value() == 0);
2346               rela_dyn->add_symbolless_local_addend(object, r_sym, orig_r_type,
2347                                                     output_section, data_shndx,
2348                                                     reloc.get_r_offset(),
2349                                                     reloc.get_r_addend());
2350             }
2351         }
2352       break;
2353
2354     case elfcpp::R_SPARC_WDISP30:
2355     case elfcpp::R_SPARC_WPLT30:
2356     case elfcpp::R_SPARC_WDISP22:
2357     case elfcpp::R_SPARC_WDISP19:
2358     case elfcpp::R_SPARC_WDISP16:
2359     case elfcpp::R_SPARC_WDISP10:
2360     case elfcpp::R_SPARC_DISP8:
2361     case elfcpp::R_SPARC_DISP16:
2362     case elfcpp::R_SPARC_DISP32:
2363     case elfcpp::R_SPARC_DISP64:
2364     case elfcpp::R_SPARC_PC10:
2365     case elfcpp::R_SPARC_PC22:
2366       break;
2367
2368     case elfcpp::R_SPARC_GOTDATA_OP:
2369     case elfcpp::R_SPARC_GOTDATA_OP_HIX22:
2370     case elfcpp::R_SPARC_GOTDATA_OP_LOX10:
2371       // We will optimize this into a GOT relative relocation
2372       // and code transform the GOT load into an addition.
2373       break;
2374
2375     case elfcpp::R_SPARC_GOT10:
2376     case elfcpp::R_SPARC_GOT13:
2377     case elfcpp::R_SPARC_GOT22:
2378       {
2379         // The symbol requires a GOT entry.
2380         Output_data_got<size, big_endian>* got;
2381         unsigned int r_sym;
2382
2383         got = target->got_section(symtab, layout);
2384         r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
2385
2386         // If we are generating a shared object, we need to add a
2387         // dynamic relocation for this symbol's GOT entry.
2388         if (parameters->options().output_is_position_independent())
2389           {
2390             if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD))
2391               {
2392                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2393                 unsigned int off = got->add_constant(0);
2394                 object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off);
2395                 rela_dyn->add_local_relative(object, r_sym,
2396                                              elfcpp::R_SPARC_RELATIVE,
2397                                              got, off, 0, is_ifunc);
2398               }
2399           }
2400         else
2401           got->add_local(object, r_sym, GOT_TYPE_STANDARD);
2402       }
2403       break;
2404
2405       // These are initial TLS relocs, which are expected when
2406       // linking.
2407     case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2408     case elfcpp::R_SPARC_TLS_GD_LO10:
2409     case elfcpp::R_SPARC_TLS_GD_ADD:
2410     case elfcpp::R_SPARC_TLS_GD_CALL:
2411     case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic
2412     case elfcpp::R_SPARC_TLS_LDM_LO10:
2413     case elfcpp::R_SPARC_TLS_LDM_ADD:
2414     case elfcpp::R_SPARC_TLS_LDM_CALL:
2415     case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
2416     case elfcpp::R_SPARC_TLS_LDO_LOX10:
2417     case elfcpp::R_SPARC_TLS_LDO_ADD:
2418     case elfcpp::R_SPARC_TLS_IE_HI22:   // Initial-exec
2419     case elfcpp::R_SPARC_TLS_IE_LO10:
2420     case elfcpp::R_SPARC_TLS_IE_LD:
2421     case elfcpp::R_SPARC_TLS_IE_LDX:
2422     case elfcpp::R_SPARC_TLS_IE_ADD:
2423     case elfcpp::R_SPARC_TLS_LE_HIX22:  // Local-exec
2424     case elfcpp::R_SPARC_TLS_LE_LOX10:
2425       {
2426         bool output_is_shared = parameters->options().shared();
2427         const tls::Tls_optimization optimized_type
2428             = optimize_tls_reloc(!output_is_shared, r_type);
2429         switch (r_type)
2430           {
2431           case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2432           case elfcpp::R_SPARC_TLS_GD_LO10:
2433           case elfcpp::R_SPARC_TLS_GD_ADD:
2434           case elfcpp::R_SPARC_TLS_GD_CALL:
2435             if (optimized_type == tls::TLSOPT_NONE)
2436               {
2437                 // Create a pair of GOT entries for the module index and
2438                 // dtv-relative offset.
2439                 Output_data_got<size, big_endian>* got
2440                     = target->got_section(symtab, layout);
2441                 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
2442                 unsigned int shndx = lsym.get_st_shndx();
2443                 bool is_ordinary;
2444                 shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary);
2445                 if (!is_ordinary)
2446                   object->error(_("local symbol %u has bad shndx %u"),
2447                                 r_sym, shndx);
2448                 else
2449                   got->add_local_pair_with_rel(object, r_sym,
2450                                                lsym.get_st_shndx(),
2451                                                GOT_TYPE_TLS_PAIR,
2452                                                target->rela_dyn_section(layout),
2453                                                (size == 64
2454                                                 ? elfcpp::R_SPARC_TLS_DTPMOD64
2455                                                 : elfcpp::R_SPARC_TLS_DTPMOD32));
2456                 if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
2457                   generate_tls_call(symtab, layout, target);
2458               }
2459             else if (optimized_type != tls::TLSOPT_TO_LE)
2460               unsupported_reloc_local(object, r_type);
2461             break;
2462
2463           case elfcpp::R_SPARC_TLS_LDM_HI22 :   // Local-dynamic
2464           case elfcpp::R_SPARC_TLS_LDM_LO10:
2465           case elfcpp::R_SPARC_TLS_LDM_ADD:
2466           case elfcpp::R_SPARC_TLS_LDM_CALL:
2467             if (optimized_type == tls::TLSOPT_NONE)
2468               {
2469                 // Create a GOT entry for the module index.
2470                 target->got_mod_index_entry(symtab, layout, object);
2471
2472                 if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
2473                   generate_tls_call(symtab, layout, target);
2474               }
2475             else if (optimized_type != tls::TLSOPT_TO_LE)
2476               unsupported_reloc_local(object, r_type);
2477             break;
2478
2479           case elfcpp::R_SPARC_TLS_LDO_HIX22:   // Alternate local-dynamic
2480           case elfcpp::R_SPARC_TLS_LDO_LOX10:
2481           case elfcpp::R_SPARC_TLS_LDO_ADD:
2482             break;
2483
2484           case elfcpp::R_SPARC_TLS_IE_HI22:     // Initial-exec
2485           case elfcpp::R_SPARC_TLS_IE_LO10:
2486           case elfcpp::R_SPARC_TLS_IE_LD:
2487           case elfcpp::R_SPARC_TLS_IE_LDX:
2488           case elfcpp::R_SPARC_TLS_IE_ADD:
2489             layout->set_has_static_tls();
2490             if (optimized_type == tls::TLSOPT_NONE)
2491               {
2492                 // Create a GOT entry for the tp-relative offset.
2493                 Output_data_got<size, big_endian>* got
2494                   = target->got_section(symtab, layout);
2495                 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
2496
2497                 if (!object->local_has_got_offset(r_sym, GOT_TYPE_TLS_OFFSET))
2498                   {
2499                     Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2500                     unsigned int off = got->add_constant(0);
2501
2502                     object->set_local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET, off);
2503
2504                     rela_dyn->add_symbolless_local_addend(object, r_sym,
2505                                                           (size == 64 ?
2506                                                            elfcpp::R_SPARC_TLS_TPOFF64 :
2507                                                            elfcpp::R_SPARC_TLS_TPOFF32),
2508                                                           got, off, 0);
2509                   }
2510               }
2511             else if (optimized_type != tls::TLSOPT_TO_LE)
2512               unsupported_reloc_local(object, r_type);
2513             break;
2514
2515           case elfcpp::R_SPARC_TLS_LE_HIX22:    // Local-exec
2516           case elfcpp::R_SPARC_TLS_LE_LOX10:
2517             layout->set_has_static_tls();
2518             if (output_is_shared)
2519               {
2520                 // We need to create a dynamic relocation.
2521                 gold_assert(lsym.get_st_type() != elfcpp::STT_SECTION);
2522                 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
2523                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2524                 rela_dyn->add_symbolless_local_addend(object, r_sym, r_type,
2525                                                       output_section, data_shndx,
2526                                                       reloc.get_r_offset(), 0);
2527               }
2528             break;
2529           }
2530       }
2531       break;
2532
2533       // These are relocations which should only be seen by the
2534       // dynamic linker, and should never be seen here.
2535     case elfcpp::R_SPARC_COPY:
2536     case elfcpp::R_SPARC_GLOB_DAT:
2537     case elfcpp::R_SPARC_JMP_SLOT:
2538     case elfcpp::R_SPARC_JMP_IREL:
2539     case elfcpp::R_SPARC_RELATIVE:
2540     case elfcpp::R_SPARC_IRELATIVE:
2541     case elfcpp::R_SPARC_TLS_DTPMOD64:
2542     case elfcpp::R_SPARC_TLS_DTPMOD32:
2543     case elfcpp::R_SPARC_TLS_DTPOFF64:
2544     case elfcpp::R_SPARC_TLS_DTPOFF32:
2545     case elfcpp::R_SPARC_TLS_TPOFF64:
2546     case elfcpp::R_SPARC_TLS_TPOFF32:
2547       gold_error(_("%s: unexpected reloc %u in object file"),
2548                  object->name().c_str(), r_type);
2549       break;
2550
2551     default:
2552       unsupported_reloc_local(object, r_type);
2553       break;
2554     }
2555 }
2556
2557 // Report an unsupported relocation against a global symbol.
2558
2559 template<int size, bool big_endian>
2560 void
2561 Target_sparc<size, big_endian>::Scan::unsupported_reloc_global(
2562                         Sized_relobj_file<size, big_endian>* object,
2563                         unsigned int r_type,
2564                         Symbol* gsym)
2565 {
2566   gold_error(_("%s: unsupported reloc %u against global symbol %s"),
2567              object->name().c_str(), r_type, gsym->demangled_name().c_str());
2568 }
2569
2570 // Scan a relocation for a global symbol.
2571
2572 template<int size, bool big_endian>
2573 inline void
2574 Target_sparc<size, big_endian>::Scan::global(
2575                                 Symbol_table* symtab,
2576                                 Layout* layout,
2577                                 Target_sparc<size, big_endian>* target,
2578                                 Sized_relobj_file<size, big_endian>* object,
2579                                 unsigned int data_shndx,
2580                                 Output_section* output_section,
2581                                 const elfcpp::Rela<size, big_endian>& reloc,
2582                                 unsigned int r_type,
2583                                 Symbol* gsym)
2584 {
2585   unsigned int orig_r_type = r_type;
2586   bool is_ifunc = gsym->type() == elfcpp::STT_GNU_IFUNC;
2587
2588   // A reference to _GLOBAL_OFFSET_TABLE_ implies that we need a got
2589   // section.  We check here to avoid creating a dynamic reloc against
2590   // _GLOBAL_OFFSET_TABLE_.
2591   if (!target->has_got_section()
2592       && strcmp(gsym->name(), "_GLOBAL_OFFSET_TABLE_") == 0)
2593     target->got_section(symtab, layout);
2594
2595   r_type &= 0xff;
2596
2597   // A STT_GNU_IFUNC symbol may require a PLT entry.
2598   if (is_ifunc
2599       && this->reloc_needs_plt_for_ifunc(object, r_type))
2600     target->make_plt_entry(symtab, layout, gsym);
2601
2602   switch (r_type)
2603     {
2604     case elfcpp::R_SPARC_NONE:
2605     case elfcpp::R_SPARC_REGISTER:
2606     case elfcpp::R_SPARC_GNU_VTINHERIT:
2607     case elfcpp::R_SPARC_GNU_VTENTRY:
2608       break;
2609
2610     case elfcpp::R_SPARC_PLT64:
2611     case elfcpp::R_SPARC_PLT32:
2612     case elfcpp::R_SPARC_HIPLT22:
2613     case elfcpp::R_SPARC_LOPLT10:
2614     case elfcpp::R_SPARC_PCPLT32:
2615     case elfcpp::R_SPARC_PCPLT22:
2616     case elfcpp::R_SPARC_PCPLT10:
2617     case elfcpp::R_SPARC_WPLT30:
2618       // If the symbol is fully resolved, this is just a PC32 reloc.
2619       // Otherwise we need a PLT entry.
2620       if (gsym->final_value_is_known())
2621         break;
2622       // If building a shared library, we can also skip the PLT entry
2623       // if the symbol is defined in the output file and is protected
2624       // or hidden.
2625       if (gsym->is_defined()
2626           && !gsym->is_from_dynobj()
2627           && !gsym->is_preemptible())
2628         break;
2629       target->make_plt_entry(symtab, layout, gsym);
2630       break;
2631
2632     case elfcpp::R_SPARC_DISP8:
2633     case elfcpp::R_SPARC_DISP16:
2634     case elfcpp::R_SPARC_DISP32:
2635     case elfcpp::R_SPARC_DISP64:
2636     case elfcpp::R_SPARC_PC_HH22:
2637     case elfcpp::R_SPARC_PC_HM10:
2638     case elfcpp::R_SPARC_PC_LM22:
2639     case elfcpp::R_SPARC_PC10:
2640     case elfcpp::R_SPARC_PC22:
2641     case elfcpp::R_SPARC_WDISP30:
2642     case elfcpp::R_SPARC_WDISP22:
2643     case elfcpp::R_SPARC_WDISP19:
2644     case elfcpp::R_SPARC_WDISP16:
2645     case elfcpp::R_SPARC_WDISP10:
2646       {
2647         if (gsym->needs_plt_entry())
2648           target->make_plt_entry(symtab, layout, gsym);
2649         // Make a dynamic relocation if necessary.
2650         if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type)))
2651           {
2652             if (parameters->options().output_is_executable()
2653                 && gsym->may_need_copy_reloc())
2654               {
2655                 target->copy_reloc(symtab, layout, object,
2656                                    data_shndx, output_section, gsym,
2657                                    reloc);
2658               }
2659             else
2660               {
2661                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2662                 check_non_pic(object, r_type);
2663                 rela_dyn->add_global(gsym, orig_r_type, output_section, object,
2664                                      data_shndx, reloc.get_r_offset(),
2665                                      reloc.get_r_addend());
2666               }
2667           }
2668       }
2669       break;
2670
2671     case elfcpp::R_SPARC_UA64:
2672     case elfcpp::R_SPARC_64:
2673     case elfcpp::R_SPARC_HIX22:
2674     case elfcpp::R_SPARC_LOX10:
2675     case elfcpp::R_SPARC_H34:
2676     case elfcpp::R_SPARC_H44:
2677     case elfcpp::R_SPARC_M44:
2678     case elfcpp::R_SPARC_L44:
2679     case elfcpp::R_SPARC_HH22:
2680     case elfcpp::R_SPARC_HM10:
2681     case elfcpp::R_SPARC_LM22:
2682     case elfcpp::R_SPARC_HI22:
2683     case elfcpp::R_SPARC_LO10:
2684     case elfcpp::R_SPARC_OLO10:
2685     case elfcpp::R_SPARC_UA32:
2686     case elfcpp::R_SPARC_32:
2687     case elfcpp::R_SPARC_UA16:
2688     case elfcpp::R_SPARC_16:
2689     case elfcpp::R_SPARC_11:
2690     case elfcpp::R_SPARC_10:
2691     case elfcpp::R_SPARC_8:
2692     case elfcpp::R_SPARC_7:
2693     case elfcpp::R_SPARC_6:
2694     case elfcpp::R_SPARC_5:
2695       {
2696         // Make a PLT entry if necessary.
2697         if (gsym->needs_plt_entry())
2698           {
2699             target->make_plt_entry(symtab, layout, gsym);
2700             // Since this is not a PC-relative relocation, we may be
2701             // taking the address of a function. In that case we need to
2702             // set the entry in the dynamic symbol table to the address of
2703             // the PLT entry.
2704             if (gsym->is_from_dynobj() && !parameters->options().shared())
2705               gsym->set_needs_dynsym_value();
2706           }
2707         // Make a dynamic relocation if necessary.
2708         if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type)))
2709           {
2710             unsigned int r_off = reloc.get_r_offset();
2711
2712             // The assembler can sometimes emit unaligned relocations
2713             // for dwarf2 cfi directives.
2714             switch (r_type)
2715               {
2716               case elfcpp::R_SPARC_16:
2717                 if (r_off & 0x1)
2718                   orig_r_type = r_type = elfcpp::R_SPARC_UA16;
2719                 break;
2720               case elfcpp::R_SPARC_32:
2721                 if (r_off & 0x3)
2722                   orig_r_type = r_type = elfcpp::R_SPARC_UA32;
2723                 break;
2724               case elfcpp::R_SPARC_64:
2725                 if (r_off & 0x7)
2726                   orig_r_type = r_type = elfcpp::R_SPARC_UA64;
2727                 break;
2728               case elfcpp::R_SPARC_UA16:
2729                 if (!(r_off & 0x1))
2730                   orig_r_type = r_type = elfcpp::R_SPARC_16;
2731                 break;
2732               case elfcpp::R_SPARC_UA32:
2733                 if (!(r_off & 0x3))
2734                   orig_r_type = r_type = elfcpp::R_SPARC_32;
2735                 break;
2736               case elfcpp::R_SPARC_UA64:
2737                 if (!(r_off & 0x7))
2738                   orig_r_type = r_type = elfcpp::R_SPARC_64;
2739                 break;
2740               }
2741
2742             if (!parameters->options().output_is_position_independent()
2743                 && gsym->may_need_copy_reloc())
2744               {
2745                 target->copy_reloc(symtab, layout, object,
2746                                    data_shndx, output_section, gsym, reloc);
2747               }
2748             else if (((size == 64 && r_type == elfcpp::R_SPARC_64)
2749                       || (size == 32 && r_type == elfcpp::R_SPARC_32))
2750                      && gsym->type() == elfcpp::STT_GNU_IFUNC
2751                      && gsym->can_use_relative_reloc(false)
2752                      && !gsym->is_from_dynobj()
2753                      && !gsym->is_undefined()
2754                      && !gsym->is_preemptible())
2755               {
2756                 // Use an IRELATIVE reloc for a locally defined
2757                 // STT_GNU_IFUNC symbol.  This makes a function
2758                 // address in a PIE executable match the address in a
2759                 // shared library that it links against.
2760                 Reloc_section* rela_dyn =
2761                   target->rela_ifunc_section(layout);
2762                 unsigned int r_type = elfcpp::R_SPARC_IRELATIVE;
2763                 rela_dyn->add_symbolless_global_addend(gsym, r_type,
2764                                                        output_section, object,
2765                                                        data_shndx,
2766                                                        reloc.get_r_offset(),
2767                                                        reloc.get_r_addend());
2768               }
2769             else if ((r_type == elfcpp::R_SPARC_32
2770                       || r_type == elfcpp::R_SPARC_64)
2771                      && gsym->can_use_relative_reloc(false))
2772               {
2773                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2774                 rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
2775                                               output_section, object,
2776                                               data_shndx, reloc.get_r_offset(),
2777                                               reloc.get_r_addend(), is_ifunc);
2778               }
2779             else
2780               {
2781                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2782
2783                 check_non_pic(object, r_type);
2784                 if (gsym->is_from_dynobj()
2785                     || gsym->is_undefined()
2786                     || gsym->is_preemptible())
2787                   rela_dyn->add_global(gsym, orig_r_type, output_section,
2788                                        object, data_shndx,
2789                                        reloc.get_r_offset(),
2790                                        reloc.get_r_addend());
2791                 else
2792                   rela_dyn->add_symbolless_global_addend(gsym, orig_r_type,
2793                                                          output_section,
2794                                                          object, data_shndx,
2795                                                          reloc.get_r_offset(),
2796                                                          reloc.get_r_addend());
2797               }
2798           }
2799       }
2800       break;
2801
2802     case elfcpp::R_SPARC_GOTDATA_OP:
2803     case elfcpp::R_SPARC_GOTDATA_OP_HIX22:
2804     case elfcpp::R_SPARC_GOTDATA_OP_LOX10:
2805       if (gsym->is_defined()
2806           && !gsym->is_from_dynobj()
2807           && !gsym->is_preemptible()
2808           && !is_ifunc)
2809         {
2810           // We will optimize this into a GOT relative relocation
2811           // and code transform the GOT load into an addition.
2812           break;
2813         }
2814     case elfcpp::R_SPARC_GOT10:
2815     case elfcpp::R_SPARC_GOT13:
2816     case elfcpp::R_SPARC_GOT22:
2817       {
2818         // The symbol requires a GOT entry.
2819         Output_data_got<size, big_endian>* got;
2820
2821         got = target->got_section(symtab, layout);
2822         if (gsym->final_value_is_known())
2823           {
2824             // For a STT_GNU_IFUNC symbol we want the PLT address.
2825             if (gsym->type() == elfcpp::STT_GNU_IFUNC)
2826               got->add_global_plt(gsym, GOT_TYPE_STANDARD);
2827             else
2828               got->add_global(gsym, GOT_TYPE_STANDARD);
2829           }
2830         else
2831           {
2832             // If this symbol is not fully resolved, we need to add a
2833             // GOT entry with a dynamic relocation.
2834             bool is_ifunc = gsym->type() == elfcpp::STT_GNU_IFUNC;
2835
2836             // Use a GLOB_DAT rather than a RELATIVE reloc if:
2837             //
2838             // 1) The symbol may be defined in some other module.
2839             //
2840             // 2) We are building a shared library and this is a
2841             // protected symbol; using GLOB_DAT means that the dynamic
2842             // linker can use the address of the PLT in the main
2843             // executable when appropriate so that function address
2844             // comparisons work.
2845             //
2846             // 3) This is a STT_GNU_IFUNC symbol in position dependent
2847             // code, again so that function address comparisons work.
2848             Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2849             if (gsym->is_from_dynobj()
2850                 || gsym->is_undefined()
2851                 || gsym->is_preemptible()
2852                 || (gsym->visibility() == elfcpp::STV_PROTECTED
2853                     && parameters->options().shared())
2854                 || (gsym->type() == elfcpp::STT_GNU_IFUNC
2855                     && parameters->options().output_is_position_independent()
2856                     && !gsym->is_forced_local()))
2857               {
2858                 unsigned int r_type = elfcpp::R_SPARC_GLOB_DAT;
2859
2860                 // If this symbol is forced local, this relocation will
2861                 // not work properly.  That's because ld.so on sparc
2862                 // (and 32-bit powerpc) expects st_value in the r_addend
2863                 // of relocations for STB_LOCAL symbols.  Curiously the
2864                 // BFD linker does not promote global hidden symbols to be
2865                 // STB_LOCAL in the dynamic symbol table like Gold does.
2866                 gold_assert(!gsym->is_forced_local());
2867                 got->add_global_with_rel(gsym, GOT_TYPE_STANDARD, rela_dyn,
2868                                          r_type);
2869               }
2870             else if (!gsym->has_got_offset(GOT_TYPE_STANDARD))
2871               {
2872                 unsigned int off = got->add_constant(0);
2873
2874                 gsym->set_got_offset(GOT_TYPE_STANDARD, off);
2875                 if (is_ifunc)
2876                   {
2877                     // Tell the dynamic linker to use the PLT address
2878                     // when resolving relocations.
2879                     if (gsym->is_from_dynobj()
2880                         && !parameters->options().shared())
2881                       gsym->set_needs_dynsym_value();
2882                   }
2883                 rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
2884                                               got, off, 0, is_ifunc);
2885               }
2886           }
2887       }
2888       break;
2889
2890       // These are initial tls relocs, which are expected when
2891       // linking.
2892     case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2893     case elfcpp::R_SPARC_TLS_GD_LO10:
2894     case elfcpp::R_SPARC_TLS_GD_ADD:
2895     case elfcpp::R_SPARC_TLS_GD_CALL:
2896     case elfcpp::R_SPARC_TLS_LDM_HI22:  // Local-dynamic
2897     case elfcpp::R_SPARC_TLS_LDM_LO10:
2898     case elfcpp::R_SPARC_TLS_LDM_ADD:
2899     case elfcpp::R_SPARC_TLS_LDM_CALL:
2900     case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
2901     case elfcpp::R_SPARC_TLS_LDO_LOX10:
2902     case elfcpp::R_SPARC_TLS_LDO_ADD:
2903     case elfcpp::R_SPARC_TLS_LE_HIX22:
2904     case elfcpp::R_SPARC_TLS_LE_LOX10:
2905     case elfcpp::R_SPARC_TLS_IE_HI22:   // Initial-exec
2906     case elfcpp::R_SPARC_TLS_IE_LO10:
2907     case elfcpp::R_SPARC_TLS_IE_LD:
2908     case elfcpp::R_SPARC_TLS_IE_LDX:
2909     case elfcpp::R_SPARC_TLS_IE_ADD:
2910       {
2911         const bool is_final = gsym->final_value_is_known();
2912         const tls::Tls_optimization optimized_type
2913             = optimize_tls_reloc(is_final, r_type);
2914         switch (r_type)
2915           {
2916           case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2917           case elfcpp::R_SPARC_TLS_GD_LO10:
2918           case elfcpp::R_SPARC_TLS_GD_ADD:
2919           case elfcpp::R_SPARC_TLS_GD_CALL:
2920             if (optimized_type == tls::TLSOPT_NONE)
2921               {
2922                 // Create a pair of GOT entries for the module index and
2923                 // dtv-relative offset.
2924                 Output_data_got<size, big_endian>* got
2925                     = target->got_section(symtab, layout);
2926                 got->add_global_pair_with_rel(gsym, GOT_TYPE_TLS_PAIR,
2927                                               target->rela_dyn_section(layout),
2928                                               (size == 64
2929                                                ? elfcpp::R_SPARC_TLS_DTPMOD64
2930                                                : elfcpp::R_SPARC_TLS_DTPMOD32),
2931                                               (size == 64
2932                                                ? elfcpp::R_SPARC_TLS_DTPOFF64
2933                                                : elfcpp::R_SPARC_TLS_DTPOFF32));
2934
2935                 // Emit R_SPARC_WPLT30 against "__tls_get_addr"
2936                 if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
2937                   generate_tls_call(symtab, layout, target);
2938               }
2939             else if (optimized_type == tls::TLSOPT_TO_IE)
2940               {
2941                 // Create a GOT entry for the tp-relative offset.
2942                 Output_data_got<size, big_endian>* got
2943                     = target->got_section(symtab, layout);
2944                 got->add_global_with_rel(gsym, GOT_TYPE_TLS_OFFSET,
2945                                          target->rela_dyn_section(layout),
2946                                          (size == 64 ?
2947                                           elfcpp::R_SPARC_TLS_TPOFF64 :
2948                                           elfcpp::R_SPARC_TLS_TPOFF32));
2949               }
2950             else if (optimized_type != tls::TLSOPT_TO_LE)
2951               unsupported_reloc_global(object, r_type, gsym);
2952             break;
2953
2954           case elfcpp::R_SPARC_TLS_LDM_HI22:    // Local-dynamic
2955           case elfcpp::R_SPARC_TLS_LDM_LO10:
2956           case elfcpp::R_SPARC_TLS_LDM_ADD:
2957           case elfcpp::R_SPARC_TLS_LDM_CALL:
2958             if (optimized_type == tls::TLSOPT_NONE)
2959               {
2960                 // Create a GOT entry for the module index.
2961                 target->got_mod_index_entry(symtab, layout, object);
2962
2963                 if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
2964                   generate_tls_call(symtab, layout, target);
2965               }
2966             else if (optimized_type != tls::TLSOPT_TO_LE)
2967               unsupported_reloc_global(object, r_type, gsym);
2968             break;
2969
2970           case elfcpp::R_SPARC_TLS_LDO_HIX22:   // Alternate local-dynamic
2971           case elfcpp::R_SPARC_TLS_LDO_LOX10:
2972           case elfcpp::R_SPARC_TLS_LDO_ADD:
2973             break;
2974
2975           case elfcpp::R_SPARC_TLS_LE_HIX22:
2976           case elfcpp::R_SPARC_TLS_LE_LOX10:
2977             layout->set_has_static_tls();
2978             if (parameters->options().shared())
2979               {
2980                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2981                 rela_dyn->add_symbolless_global_addend(gsym, orig_r_type,
2982                                                        output_section, object,
2983                                                        data_shndx, reloc.get_r_offset(),
2984                                                        0);
2985               }
2986             break;
2987
2988           case elfcpp::R_SPARC_TLS_IE_HI22:     // Initial-exec
2989           case elfcpp::R_SPARC_TLS_IE_LO10:
2990           case elfcpp::R_SPARC_TLS_IE_LD:
2991           case elfcpp::R_SPARC_TLS_IE_LDX:
2992           case elfcpp::R_SPARC_TLS_IE_ADD:
2993             layout->set_has_static_tls();
2994             if (optimized_type == tls::TLSOPT_NONE)
2995               {
2996                 // Create a GOT entry for the tp-relative offset.
2997                 Output_data_got<size, big_endian>* got
2998                   = target->got_section(symtab, layout);
2999                 got->add_global_with_rel(gsym, GOT_TYPE_TLS_OFFSET,
3000                                          target->rela_dyn_section(layout),
3001                                          (size == 64
3002                                           ? elfcpp::R_SPARC_TLS_TPOFF64
3003                                           : elfcpp::R_SPARC_TLS_TPOFF32));
3004               }
3005             else if (optimized_type != tls::TLSOPT_TO_LE)
3006               unsupported_reloc_global(object, r_type, gsym);
3007             break;
3008           }
3009       }
3010       break;
3011
3012       // These are relocations which should only be seen by the
3013       // dynamic linker, and should never be seen here.
3014     case elfcpp::R_SPARC_COPY:
3015     case elfcpp::R_SPARC_GLOB_DAT:
3016     case elfcpp::R_SPARC_JMP_SLOT:
3017     case elfcpp::R_SPARC_JMP_IREL:
3018     case elfcpp::R_SPARC_RELATIVE:
3019     case elfcpp::R_SPARC_IRELATIVE:
3020     case elfcpp::R_SPARC_TLS_DTPMOD64:
3021     case elfcpp::R_SPARC_TLS_DTPMOD32:
3022     case elfcpp::R_SPARC_TLS_DTPOFF64:
3023     case elfcpp::R_SPARC_TLS_DTPOFF32:
3024     case elfcpp::R_SPARC_TLS_TPOFF64:
3025     case elfcpp::R_SPARC_TLS_TPOFF32:
3026       gold_error(_("%s: unexpected reloc %u in object file"),
3027                  object->name().c_str(), r_type);
3028       break;
3029
3030     default:
3031       unsupported_reloc_global(object, r_type, gsym);
3032       break;
3033     }
3034 }
3035
3036 // Make a new symbol table entry.
3037 // STT_SPARC_REGISTER symbols require special handling,
3038 // so we intercept these symbols and keep track of them separately.
3039 // We will resolve register symbols here and output them at symbol
3040 // finalization time.
3041
3042 template<int size, bool big_endian>
3043 Sized_symbol<size>*
3044 Target_sparc<size, big_endian>::make_symbol(const char* name,
3045                                             elfcpp::STT type,
3046                                             Object* object,
3047                                             unsigned int shndx,
3048                                             uint64_t value)
3049 {
3050   // REGISTER symbols are used only on SPARC-64.
3051   if (size == 64 && type == elfcpp::STT_SPARC_REGISTER)
3052     {
3053       // Ignore REGISTER symbols in dynamic objects.
3054       if (object->is_dynamic())
3055         return NULL;
3056       // Only registers 2, 3, 6, and 7 can be declared global.
3057       int reg = value;
3058       switch (reg)
3059         {
3060         case 2: case 3:
3061           reg -= 2;
3062           break;
3063         case 6: case 7:
3064           reg -= 4;
3065           break;
3066         default:
3067           gold_error(_("%s: only registers %%g[2367] can be declared "
3068                        "using STT_REGISTER"),
3069                      object->name().c_str());
3070           return NULL;
3071         }
3072       Register_symbol& rsym = this->register_syms_[reg];
3073       if (rsym.name == NULL)
3074         {
3075           rsym.name = name;
3076           rsym.shndx = shndx;
3077           rsym.obj = object;
3078         }
3079       else
3080         {
3081           if (strcmp(rsym.name, name) != 0)
3082             {
3083               gold_error(_("%s: register %%g%d declared as '%s'; "
3084                            "previously declared as '%s' in %s"),
3085                          object->name().c_str(),
3086                          static_cast<int>(value),
3087                          *name ? name : "#scratch",
3088                          *rsym.name ? rsym.name : "#scratch",
3089                          rsym.obj->name().c_str());
3090               return NULL;
3091             }
3092         }
3093       return NULL;
3094     }
3095   return new Sized_symbol<size>();
3096 }
3097
3098 // Process relocations for gc.
3099
3100 template<int size, bool big_endian>
3101 void
3102 Target_sparc<size, big_endian>::gc_process_relocs(
3103                         Symbol_table* symtab,
3104                         Layout* layout,
3105                         Sized_relobj_file<size, big_endian>* object,
3106                         unsigned int data_shndx,
3107                         unsigned int,
3108                         const unsigned char* prelocs,
3109                         size_t reloc_count,
3110                         Output_section* output_section,
3111                         bool needs_special_offset_handling,
3112                         size_t local_symbol_count,
3113                         const unsigned char* plocal_symbols)
3114 {
3115   typedef Target_sparc<size, big_endian> Sparc;
3116   typedef typename Target_sparc<size, big_endian>::Scan Scan;
3117   typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian>
3118       Classify_reloc;
3119
3120   gold::gc_process_relocs<size, big_endian, Sparc, Scan, Classify_reloc>(
3121     symtab,
3122     layout,
3123     this,
3124     object,
3125     data_shndx,
3126     prelocs,
3127     reloc_count,
3128     output_section,
3129     needs_special_offset_handling,
3130     local_symbol_count,
3131     plocal_symbols);
3132 }
3133
3134 // Scan relocations for a section.
3135
3136 template<int size, bool big_endian>
3137 void
3138 Target_sparc<size, big_endian>::scan_relocs(
3139                         Symbol_table* symtab,
3140                         Layout* layout,
3141                         Sized_relobj_file<size, big_endian>* object,
3142                         unsigned int data_shndx,
3143                         unsigned int sh_type,
3144                         const unsigned char* prelocs,
3145                         size_t reloc_count,
3146                         Output_section* output_section,
3147                         bool needs_special_offset_handling,
3148                         size_t local_symbol_count,
3149                         const unsigned char* plocal_symbols)
3150 {
3151   typedef Target_sparc<size, big_endian> Sparc;
3152   typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian>
3153       Classify_reloc;
3154
3155   if (sh_type == elfcpp::SHT_REL)
3156     {
3157       gold_error(_("%s: unsupported REL reloc section"),
3158                  object->name().c_str());
3159       return;
3160     }
3161
3162   gold::scan_relocs<size, big_endian, Sparc, Scan, Classify_reloc>(
3163     symtab,
3164     layout,
3165     this,
3166     object,
3167     data_shndx,
3168     prelocs,
3169     reloc_count,
3170     output_section,
3171     needs_special_offset_handling,
3172     local_symbol_count,
3173     plocal_symbols);
3174 }
3175
3176 // Finalize the sections.
3177
3178 template<int size, bool big_endian>
3179 void
3180 Target_sparc<size, big_endian>::do_finalize_sections(
3181     Layout* layout,
3182     const Input_objects*,
3183     Symbol_table* symtab)
3184 {
3185   if (this->plt_)
3186     this->plt_->emit_pending_ifunc_relocs();
3187
3188   // Fill in some more dynamic tags.
3189   const Reloc_section* rel_plt = (this->plt_ == NULL
3190                                   ? NULL
3191                                   : this->plt_->rel_plt());
3192   layout->add_target_dynamic_tags(false, this->plt_, rel_plt,
3193                                   this->rela_dyn_, true, true);
3194
3195   // Emit any relocs we saved in an attempt to avoid generating COPY
3196   // relocs.
3197   if (this->copy_relocs_.any_saved_relocs())
3198     this->copy_relocs_.emit(this->rela_dyn_section(layout));
3199
3200   if (parameters->doing_static_link()
3201       && (this->plt_ == NULL || !this->plt_->has_ifunc_section()))
3202     {
3203       // If linking statically, make sure that the __rela_iplt symbols
3204       // were defined if necessary, even if we didn't create a PLT.
3205       static const Define_symbol_in_segment syms[] =
3206         {
3207           {
3208             "__rela_iplt_start",        // name
3209             elfcpp::PT_LOAD,            // segment_type
3210             elfcpp::PF_W,               // segment_flags_set
3211             elfcpp::PF(0),              // segment_flags_clear
3212             0,                          // value
3213             0,                          // size
3214             elfcpp::STT_NOTYPE,         // type
3215             elfcpp::STB_GLOBAL,         // binding
3216             elfcpp::STV_HIDDEN,         // visibility
3217             0,                          // nonvis
3218             Symbol::SEGMENT_START,      // offset_from_base
3219             true                        // only_if_ref
3220           },
3221           {
3222             "__rela_iplt_end",          // name
3223             elfcpp::PT_LOAD,            // segment_type
3224             elfcpp::PF_W,               // segment_flags_set
3225             elfcpp::PF(0),              // segment_flags_clear
3226             0,                          // value
3227             0,                          // size
3228             elfcpp::STT_NOTYPE,         // type
3229             elfcpp::STB_GLOBAL,         // binding
3230             elfcpp::STV_HIDDEN,         // visibility
3231             0,                          // nonvis
3232             Symbol::SEGMENT_START,      // offset_from_base
3233             true                        // only_if_ref
3234           }
3235         };
3236
3237       symtab->define_symbols(layout, 2, syms,
3238                              layout->script_options()->saw_sections_clause());
3239     }
3240
3241   for (int reg = 0; reg < 4; ++reg)
3242     {
3243       Register_symbol& rsym = this->register_syms_[reg];
3244       if (rsym.name != NULL)
3245         {
3246           int value = reg < 3 ? reg + 2 : reg + 4;
3247           Sized_symbol<size>* sym = new Sized_symbol<size>();
3248           if (rsym.shndx == elfcpp::SHN_UNDEF)
3249             sym->init_undefined(rsym.name, NULL, value,
3250                                 elfcpp::STT_SPARC_REGISTER, elfcpp::STB_GLOBAL,
3251                                 elfcpp::STV_DEFAULT, 0);
3252           else
3253             sym->init_constant(rsym.name, NULL, value, 0,
3254                                elfcpp::STT_SPARC_REGISTER, elfcpp::STB_GLOBAL,
3255                                elfcpp::STV_DEFAULT, 0, false);
3256           symtab->add_target_global_symbol(sym);
3257           layout->add_target_specific_dynamic_tag(elfcpp::DT_SPARC_REGISTER,
3258                                                   value);
3259         }
3260     }
3261 }
3262
3263 // Perform a relocation.
3264
3265 template<int size, bool big_endian>
3266 inline bool
3267 Target_sparc<size, big_endian>::Relocate::relocate(
3268                         const Relocate_info<size, big_endian>* relinfo,
3269                         unsigned int,
3270                         Target_sparc* target,
3271                         Output_section*,
3272                         size_t relnum,
3273                         const unsigned char* preloc,
3274                         const Sized_symbol<size>* gsym,
3275                         const Symbol_value<size>* psymval,
3276                         unsigned char* view,
3277                         typename elfcpp::Elf_types<size>::Elf_Addr address,
3278                         section_size_type view_size)
3279 {
3280   const elfcpp::Rela<size, big_endian> rela(preloc);
3281   unsigned int r_type = elfcpp::elf_r_type<size>(rela.get_r_info());
3282   bool orig_is_ifunc = psymval->is_ifunc_symbol();
3283   r_type &= 0xff;
3284
3285   if (this->ignore_gd_add_)
3286     {
3287       if (r_type != elfcpp::R_SPARC_TLS_GD_ADD)
3288         gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
3289                                _("missing expected TLS relocation"));
3290       else
3291         {
3292           this->ignore_gd_add_ = false;
3293           return false;
3294         }
3295     }
3296
3297   if (view == NULL)
3298     return true;
3299
3300   if (this->reloc_adjust_addr_ == view)
3301     view -= 4;
3302
3303   typedef Sparc_relocate_functions<size, big_endian> Reloc;
3304   const Sized_relobj_file<size, big_endian>* object = relinfo->object;
3305
3306   // Pick the value to use for symbols defined in shared objects.
3307   Symbol_value<size> symval;
3308   if (gsym != NULL
3309       && gsym->use_plt_offset(Scan::get_reference_flags(r_type)))
3310     {
3311       elfcpp::Elf_Xword value;
3312
3313       value = target->plt_address_for_global(gsym);
3314
3315       symval.set_output_value(value);
3316
3317       psymval = &symval;
3318     }
3319   else if (gsym == NULL && orig_is_ifunc)
3320     {
3321       unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
3322       if (object->local_has_plt_offset(r_sym))
3323         {
3324           symval.set_output_value(target->plt_address_for_local(object, r_sym));
3325           psymval = &symval;
3326         }
3327     }
3328
3329   const elfcpp::Elf_Xword addend = rela.get_r_addend();
3330
3331   // Get the GOT offset if needed.  Unlike i386 and x86_64, our GOT
3332   // pointer points to the beginning, not the end, of the table.
3333   // So we just use the plain offset.
3334   unsigned int got_offset = 0;
3335   bool gdop_valid = false;
3336   switch (r_type)
3337     {
3338     case elfcpp::R_SPARC_GOTDATA_OP:
3339     case elfcpp::R_SPARC_GOTDATA_OP_HIX22:
3340     case elfcpp::R_SPARC_GOTDATA_OP_LOX10:
3341       // If this is local, we did not create a GOT entry because we
3342       // intend to transform this into a GOT relative relocation.
3343       if (gsym == NULL
3344           || (gsym->is_defined()
3345               && !gsym->is_from_dynobj()
3346               && !gsym->is_preemptible()
3347               && !orig_is_ifunc))
3348         {
3349           got_offset = psymval->value(object, addend) - target->got_address();
3350           gdop_valid = true;
3351           break;
3352         }
3353     case elfcpp::R_SPARC_GOT10:
3354     case elfcpp::R_SPARC_GOT13:
3355     case elfcpp::R_SPARC_GOT22:
3356       if (gsym != NULL)
3357         {
3358           gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD));
3359           got_offset = gsym->got_offset(GOT_TYPE_STANDARD);
3360         }
3361       else
3362         {
3363           unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
3364           gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD));
3365           got_offset = object->local_got_offset(r_sym, GOT_TYPE_STANDARD);
3366         }
3367       break;
3368
3369     default:
3370       break;
3371     }
3372
3373   switch (r_type)
3374     {
3375     case elfcpp::R_SPARC_NONE:
3376     case elfcpp::R_SPARC_REGISTER:
3377     case elfcpp::R_SPARC_GNU_VTINHERIT:
3378     case elfcpp::R_SPARC_GNU_VTENTRY:
3379       break;
3380
3381     case elfcpp::R_SPARC_8:
3382       Relocate_functions<size, big_endian>::rela8(view, object,
3383                                                   psymval, addend);
3384       break;
3385
3386     case elfcpp::R_SPARC_16:
3387       if (rela.get_r_offset() & 0x1)
3388         {
3389           // The assembler can sometimes emit unaligned relocations
3390           // for dwarf2 cfi directives.
3391           Reloc::ua16(view, object, psymval, addend);
3392         }
3393       else
3394         Relocate_functions<size, big_endian>::rela16(view, object,
3395                                                      psymval, addend);
3396       break;
3397
3398     case elfcpp::R_SPARC_32:
3399       if (!parameters->options().output_is_position_independent())
3400         {
3401           if (rela.get_r_offset() & 0x3)
3402             {
3403               // The assembler can sometimes emit unaligned relocations
3404               // for dwarf2 cfi directives.
3405               Reloc::ua32(view, object, psymval, addend);
3406             }
3407           else
3408             Relocate_functions<size, big_endian>::rela32(view, object,
3409                                                          psymval, addend);
3410         }
3411       break;
3412
3413     case elfcpp::R_SPARC_DISP8:
3414       Reloc::disp8(view, object, psymval, addend, address);
3415       break;
3416
3417     case elfcpp::R_SPARC_DISP16:
3418       Reloc::disp16(view, object, psymval, addend, address);
3419       break;
3420
3421     case elfcpp::R_SPARC_DISP32:
3422       Reloc::disp32(view, object, psymval, addend, address);
3423       break;
3424
3425     case elfcpp::R_SPARC_DISP64:
3426       Reloc::disp64(view, object, psymval, addend, address);
3427       break;
3428
3429     case elfcpp::R_SPARC_WDISP30:
3430     case elfcpp::R_SPARC_WPLT30:
3431       Reloc::wdisp30(view, object, psymval, addend, address);
3432       if (target->may_relax())
3433         relax_call(target, view, rela, view_size);
3434       break;
3435
3436     case elfcpp::R_SPARC_WDISP22:
3437       Reloc::wdisp22(view, object, psymval, addend, address);
3438       break;
3439
3440     case elfcpp::R_SPARC_WDISP19:
3441       Reloc::wdisp19(view, object, psymval, addend, address);
3442       break;
3443
3444     case elfcpp::R_SPARC_WDISP16:
3445       Reloc::wdisp16(view, object, psymval, addend, address);
3446       break;
3447
3448     case elfcpp::R_SPARC_WDISP10:
3449       Reloc::wdisp10(view, object, psymval, addend, address);
3450       break;
3451
3452     case elfcpp::R_SPARC_HI22:
3453       Reloc::hi22(view, object, psymval, addend);
3454       break;
3455
3456     case elfcpp::R_SPARC_22:
3457       Reloc::rela32_22(view, object, psymval, addend);
3458       break;
3459
3460     case elfcpp::R_SPARC_13:
3461       Reloc::rela32_13(view, object, psymval, addend);
3462       break;
3463
3464     case elfcpp::R_SPARC_LO10:
3465       Reloc::lo10(view, object, psymval, addend);
3466       break;
3467
3468     case elfcpp::R_SPARC_GOT10:
3469       Reloc::lo10(view, got_offset, addend);
3470       break;
3471
3472     case elfcpp::R_SPARC_GOTDATA_OP:
3473       if (gdop_valid)
3474         {
3475           typedef typename elfcpp::Swap<32, true>::Valtype Insntype;
3476           Insntype* wv = reinterpret_cast<Insntype*>(view);
3477           Insntype val;
3478
3479           // {ld,ldx} [%rs1 + %rs2], %rd --> add %rs1, %rs2, %rd
3480           val = elfcpp::Swap<32, true>::readval(wv);
3481           val = 0x80000000 | (val & 0x3e07c01f);
3482           elfcpp::Swap<32, true>::writeval(wv, val);
3483         }
3484       break;
3485
3486     case elfcpp::R_SPARC_GOTDATA_OP_LOX10:
3487       if (gdop_valid)
3488         {
3489           Reloc::gdop_lox10(view, got_offset);
3490           break;
3491         }
3492       /* Fall through.  */
3493     case elfcpp::R_SPARC_GOT13:
3494       Reloc::rela32_13(view, got_offset, addend);
3495       break;
3496
3497     case elfcpp::R_SPARC_GOTDATA_OP_HIX22:
3498       if (gdop_valid)
3499         {
3500           Reloc::gdop_hix22(view, got_offset);
3501           break;
3502         }
3503       /* Fall through.  */
3504     case elfcpp::R_SPARC_GOT22:
3505       Reloc::hi22(view, got_offset, addend);
3506       break;
3507
3508     case elfcpp::R_SPARC_PC10:
3509       Reloc::pc10(view, object, psymval, addend, address);
3510       break;
3511
3512     case elfcpp::R_SPARC_PC22:
3513       Reloc::pc22(view, object, psymval, addend, address);
3514       break;
3515
3516     case elfcpp::R_SPARC_TLS_DTPOFF32:
3517     case elfcpp::R_SPARC_UA32:
3518       Reloc::ua32(view, object, psymval, addend);
3519       break;
3520
3521     case elfcpp::R_SPARC_PLT64:
3522       Relocate_functions<size, big_endian>::rela64(view, object,
3523                                                    psymval, addend);
3524       break;
3525
3526     case elfcpp::R_SPARC_PLT32:
3527       Relocate_functions<size, big_endian>::rela32(view, object,
3528                                                    psymval, addend);
3529       break;
3530
3531     case elfcpp::R_SPARC_HIPLT22:
3532       Reloc::hi22(view, object, psymval, addend);
3533       break;
3534
3535     case elfcpp::R_SPARC_LOPLT10:
3536       Reloc::lo10(view, object, psymval, addend);
3537       break;
3538
3539     case elfcpp::R_SPARC_PCPLT32:
3540       Reloc::disp32(view, object, psymval, addend, address);
3541       break;
3542
3543     case elfcpp::R_SPARC_PCPLT22:
3544       Reloc::pcplt22(view, object, psymval, addend, address);
3545       break;
3546
3547     case elfcpp::R_SPARC_PCPLT10:
3548       Reloc::lo10(view, object, psymval, addend, address);
3549       break;
3550
3551     case elfcpp::R_SPARC_64:
3552       if (!parameters->options().output_is_position_independent())
3553         {
3554           if (rela.get_r_offset() & 0x7)
3555             {
3556               // The assembler can sometimes emit unaligned relocations
3557               // for dwarf2 cfi directives.
3558               Reloc::ua64(view, object, psymval, addend);
3559             }
3560           else
3561             Relocate_functions<size, big_endian>::rela64(view, object,
3562                                                          psymval, addend);
3563         }
3564       break;
3565
3566     case elfcpp::R_SPARC_OLO10:
3567       {
3568         unsigned int addend2 = rela.get_r_info() & 0xffffffff;
3569         addend2 = ((addend2 >> 8) ^ 0x800000) - 0x800000;
3570         Reloc::olo10(view, object, psymval, addend, addend2);
3571       }
3572       break;
3573
3574     case elfcpp::R_SPARC_HH22:
3575       Reloc::hh22(view, object, psymval, addend);
3576       break;
3577
3578     case elfcpp::R_SPARC_PC_HH22:
3579       Reloc::pc_hh22(view, object, psymval, addend, address);
3580       break;
3581
3582     case elfcpp::R_SPARC_HM10:
3583       Reloc::hm10(view, object, psymval, addend);
3584       break;
3585
3586     case elfcpp::R_SPARC_PC_HM10:
3587       Reloc::pc_hm10(view, object, psymval, addend, address);
3588       break;
3589
3590     case elfcpp::R_SPARC_LM22:
3591       Reloc::hi22(view, object, psymval, addend);
3592       break;
3593
3594     case elfcpp::R_SPARC_PC_LM22:
3595       Reloc::pcplt22(view, object, psymval, addend, address);
3596       break;
3597
3598     case elfcpp::R_SPARC_11:
3599       Reloc::rela32_11(view, object, psymval, addend);
3600       break;
3601
3602     case elfcpp::R_SPARC_10:
3603       Reloc::rela32_10(view, object, psymval, addend);
3604       break;
3605
3606     case elfcpp::R_SPARC_7:
3607       Reloc::rela32_7(view, object, psymval, addend);
3608       break;
3609
3610     case elfcpp::R_SPARC_6:
3611       Reloc::rela32_6(view, object, psymval, addend);
3612       break;
3613
3614     case elfcpp::R_SPARC_5:
3615       Reloc::rela32_5(view, object, psymval, addend);
3616       break;
3617
3618     case elfcpp::R_SPARC_HIX22:
3619       Reloc::hix22(view, object, psymval, addend);
3620       break;
3621
3622     case elfcpp::R_SPARC_LOX10:
3623       Reloc::lox10(view, object, psymval, addend);
3624       break;
3625
3626     case elfcpp::R_SPARC_H34:
3627       Reloc::h34(view, object, psymval, addend);
3628       break;
3629
3630     case elfcpp::R_SPARC_H44:
3631       Reloc::h44(view, object, psymval, addend);
3632       break;
3633
3634     case elfcpp::R_SPARC_M44:
3635       Reloc::m44(view, object, psymval, addend);
3636       break;
3637
3638     case elfcpp::R_SPARC_L44:
3639       Reloc::l44(view, object, psymval, addend);
3640       break;
3641
3642     case elfcpp::R_SPARC_TLS_DTPOFF64:
3643     case elfcpp::R_SPARC_UA64:
3644       Reloc::ua64(view, object, psymval, addend);
3645       break;
3646
3647     case elfcpp::R_SPARC_UA16:
3648       Reloc::ua16(view, object, psymval, addend);
3649       break;
3650
3651     case elfcpp::R_SPARC_TLS_GD_HI22:
3652     case elfcpp::R_SPARC_TLS_GD_LO10:
3653     case elfcpp::R_SPARC_TLS_GD_ADD:
3654     case elfcpp::R_SPARC_TLS_GD_CALL:
3655     case elfcpp::R_SPARC_TLS_LDM_HI22:
3656     case elfcpp::R_SPARC_TLS_LDM_LO10:
3657     case elfcpp::R_SPARC_TLS_LDM_ADD:
3658     case elfcpp::R_SPARC_TLS_LDM_CALL:
3659     case elfcpp::R_SPARC_TLS_LDO_HIX22:
3660     case elfcpp::R_SPARC_TLS_LDO_LOX10:
3661     case elfcpp::R_SPARC_TLS_LDO_ADD:
3662     case elfcpp::R_SPARC_TLS_IE_HI22:
3663     case elfcpp::R_SPARC_TLS_IE_LO10:
3664     case elfcpp::R_SPARC_TLS_IE_LD:
3665     case elfcpp::R_SPARC_TLS_IE_LDX:
3666     case elfcpp::R_SPARC_TLS_IE_ADD:
3667     case elfcpp::R_SPARC_TLS_LE_HIX22:
3668     case elfcpp::R_SPARC_TLS_LE_LOX10:
3669       this->relocate_tls(relinfo, target, relnum, rela,
3670                          r_type, gsym, psymval, view,
3671                          address, view_size);
3672       break;
3673
3674     case elfcpp::R_SPARC_COPY:
3675     case elfcpp::R_SPARC_GLOB_DAT:
3676     case elfcpp::R_SPARC_JMP_SLOT:
3677     case elfcpp::R_SPARC_JMP_IREL:
3678     case elfcpp::R_SPARC_RELATIVE:
3679     case elfcpp::R_SPARC_IRELATIVE:
3680       // These are outstanding tls relocs, which are unexpected when
3681       // linking.
3682     case elfcpp::R_SPARC_TLS_DTPMOD64:
3683     case elfcpp::R_SPARC_TLS_DTPMOD32:
3684     case elfcpp::R_SPARC_TLS_TPOFF64:
3685     case elfcpp::R_SPARC_TLS_TPOFF32:
3686       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
3687                              _("unexpected reloc %u in object file"),
3688                              r_type);
3689       break;
3690
3691     default:
3692       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
3693                              _("unsupported reloc %u"),
3694                              r_type);
3695       break;
3696     }
3697
3698   return true;
3699 }
3700
3701 // Perform a TLS relocation.
3702
3703 template<int size, bool big_endian>
3704 inline void
3705 Target_sparc<size, big_endian>::Relocate::relocate_tls(
3706                         const Relocate_info<size, big_endian>* relinfo,
3707                         Target_sparc<size, big_endian>* target,
3708                         size_t relnum,
3709                         const elfcpp::Rela<size, big_endian>& rela,
3710                         unsigned int r_type,
3711                         const Sized_symbol<size>* gsym,
3712                         const Symbol_value<size>* psymval,
3713                         unsigned char* view,
3714                         typename elfcpp::Elf_types<size>::Elf_Addr address,
3715                         section_size_type)
3716 {
3717   Output_segment* tls_segment = relinfo->layout->tls_segment();
3718   typedef Sparc_relocate_functions<size, big_endian> Reloc;
3719   const Sized_relobj_file<size, big_endian>* object = relinfo->object;
3720   typedef typename elfcpp::Swap<32, true>::Valtype Insntype;
3721
3722   const elfcpp::Elf_Xword addend = rela.get_r_addend();
3723   typename elfcpp::Elf_types<size>::Elf_Addr value = psymval->value(object, 0);
3724
3725   const bool is_final =
3726     (gsym == NULL
3727      ? !parameters->options().output_is_position_independent()
3728      : gsym->final_value_is_known());
3729   const tls::Tls_optimization optimized_type
3730       = optimize_tls_reloc(is_final, r_type);
3731
3732   switch (r_type)
3733     {
3734     case elfcpp::R_SPARC_TLS_GD_HI22:
3735     case elfcpp::R_SPARC_TLS_GD_LO10:
3736     case elfcpp::R_SPARC_TLS_GD_ADD:
3737     case elfcpp::R_SPARC_TLS_GD_CALL:
3738       if (optimized_type == tls::TLSOPT_TO_LE)
3739         {
3740           Insntype* wv = reinterpret_cast<Insntype*>(view);
3741           Insntype val;
3742
3743           value -= tls_segment->memsz();
3744
3745           switch (r_type)
3746             {
3747             case elfcpp::R_SPARC_TLS_GD_HI22:
3748               // TLS_GD_HI22 --> TLS_LE_HIX22
3749               Reloc::hix22(view, value, addend);
3750               break;
3751
3752             case elfcpp::R_SPARC_TLS_GD_LO10:
3753               // TLS_GD_LO10 --> TLS_LE_LOX10
3754               Reloc::lox10(view, value, addend);
3755               break;
3756
3757             case elfcpp::R_SPARC_TLS_GD_ADD:
3758               // add %reg1, %reg2, %reg3 --> mov %g7, %reg2, %reg3
3759               val = elfcpp::Swap<32, true>::readval(wv);
3760               val = (val & ~0x7c000) | 0x1c000;
3761               elfcpp::Swap<32, true>::writeval(wv, val);
3762               break;
3763             case elfcpp::R_SPARC_TLS_GD_CALL:
3764               // call __tls_get_addr --> nop
3765               elfcpp::Swap<32, true>::writeval(wv, sparc_nop);
3766               break;
3767             }
3768           break;
3769         }
3770       else
3771         {
3772           unsigned int got_type = (optimized_type == tls::TLSOPT_TO_IE
3773                                    ? GOT_TYPE_TLS_OFFSET
3774                                    : GOT_TYPE_TLS_PAIR);
3775           if (gsym != NULL)
3776             {
3777               gold_assert(gsym->has_got_offset(got_type));
3778               value = gsym->got_offset(got_type);
3779             }
3780           else
3781             {
3782               unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
3783               gold_assert(object->local_has_got_offset(r_sym, got_type));
3784               value = object->local_got_offset(r_sym, got_type);
3785             }
3786           if (optimized_type == tls::TLSOPT_TO_IE)
3787             {
3788               Insntype* wv = reinterpret_cast<Insntype*>(view);
3789               Insntype val;
3790
3791               switch (r_type)
3792                 {
3793                 case elfcpp::R_SPARC_TLS_GD_HI22:
3794                   // TLS_GD_HI22 --> TLS_IE_HI22
3795                   Reloc::hi22(view, value, addend);
3796                   break;
3797
3798                 case elfcpp::R_SPARC_TLS_GD_LO10:
3799                   // TLS_GD_LO10 --> TLS_IE_LO10
3800                   Reloc::lo10(view, value, addend);
3801                   break;
3802
3803                 case elfcpp::R_SPARC_TLS_GD_ADD:
3804                   // add %reg1, %reg2, %reg3 --> ld [%reg1 + %reg2], %reg3
3805                   val = elfcpp::Swap<32, true>::readval(wv);
3806
3807                   if (size == 64)
3808                     val |= 0xc0580000;
3809                   else
3810                     val |= 0xc0000000;
3811
3812                   elfcpp::Swap<32, true>::writeval(wv, val);
3813                   break;
3814
3815                 case elfcpp::R_SPARC_TLS_GD_CALL:
3816                   // The compiler can put the TLS_GD_ADD instruction
3817                   // into the delay slot of the call.  If so, we need
3818                   // to transpose the two instructions so that the
3819                   // new sequence works properly.
3820                   //
3821                   // The test we use is if the instruction in the
3822                   // delay slot is an add with destination register
3823                   // equal to %o0
3824                   val = elfcpp::Swap<32, true>::readval(wv + 1);
3825                   if ((val & 0x81f80000) == 0x80000000
3826                       && ((val >> 25) & 0x1f) == 0x8)
3827                     {
3828                       if (size == 64)
3829                         val |= 0xc0580000;
3830                       else
3831                         val |= 0xc0000000;
3832
3833                       elfcpp::Swap<32, true>::writeval(wv, val);
3834
3835                       wv += 1;
3836                       this->ignore_gd_add_ = true;
3837                     }
3838                   else
3839                     {
3840                       // Even if the delay slot isn't the TLS_GD_ADD
3841                       // instruction, we still have to handle the case
3842                       // where it sets up %o0 in some other way.
3843                       elfcpp::Swap<32, true>::writeval(wv, val);
3844                       wv += 1;
3845                       this->reloc_adjust_addr_ = view + 4;
3846                     }
3847                   // call __tls_get_addr --> add %g7, %o0, %o0
3848                   elfcpp::Swap<32, true>::writeval(wv, 0x9001c008);
3849                   break;
3850                 }
3851               break;
3852             }
3853           else if (optimized_type == tls::TLSOPT_NONE)
3854             {
3855               switch (r_type)
3856                 {
3857                 case elfcpp::R_SPARC_TLS_GD_HI22:
3858                   Reloc::hi22(view, value, addend);
3859                   break;
3860                 case elfcpp::R_SPARC_TLS_GD_LO10:
3861                   Reloc::lo10(view, value, addend);
3862                   break;
3863                 case elfcpp::R_SPARC_TLS_GD_ADD:
3864                   break;
3865                 case elfcpp::R_SPARC_TLS_GD_CALL:
3866                   {
3867                     Symbol_value<size> symval;
3868                     elfcpp::Elf_Xword value;
3869                     Symbol* tsym;
3870
3871                     tsym = target->tls_get_addr_sym_;
3872                     gold_assert(tsym);
3873                     value = (target->plt_section()->address() +
3874                              tsym->plt_offset());
3875                     symval.set_output_value(value);
3876                     Reloc::wdisp30(view, object, &symval, addend, address);
3877                   }
3878                   break;
3879                 }
3880               break;
3881             }
3882         }
3883       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
3884                              _("unsupported reloc %u"),
3885                              r_type);
3886       break;
3887
3888     case elfcpp::R_SPARC_TLS_LDM_HI22:
3889     case elfcpp::R_SPARC_TLS_LDM_LO10:
3890     case elfcpp::R_SPARC_TLS_LDM_ADD:
3891     case elfcpp::R_SPARC_TLS_LDM_CALL:
3892       if (optimized_type == tls::TLSOPT_TO_LE)
3893         {
3894           Insntype* wv = reinterpret_cast<Insntype*>(view);
3895
3896           switch (r_type)
3897             {
3898             case elfcpp::R_SPARC_TLS_LDM_HI22:
3899             case elfcpp::R_SPARC_TLS_LDM_LO10:
3900             case elfcpp::R_SPARC_TLS_LDM_ADD:
3901               elfcpp::Swap<32, true>::writeval(wv, sparc_nop);
3902               break;
3903
3904             case elfcpp::R_SPARC_TLS_LDM_CALL:
3905               elfcpp::Swap<32, true>::writeval(wv, sparc_mov_g0_o0);
3906               break;
3907             }
3908           break;
3909         }
3910       else if (optimized_type == tls::TLSOPT_NONE)
3911         {
3912           // Relocate the field with the offset of the GOT entry for
3913           // the module index.
3914           unsigned int got_offset;
3915
3916           got_offset = target->got_mod_index_entry(NULL, NULL, NULL);
3917           switch (r_type)
3918             {
3919             case elfcpp::R_SPARC_TLS_LDM_HI22:
3920               Reloc::hi22(view, got_offset, addend);
3921               break;
3922             case elfcpp::R_SPARC_TLS_LDM_LO10:
3923               Reloc::lo10(view, got_offset, addend);
3924               break;
3925             case elfcpp::R_SPARC_TLS_LDM_ADD:
3926               break;
3927             case elfcpp::R_SPARC_TLS_LDM_CALL:
3928               {
3929                 Symbol_value<size> symval;
3930                 elfcpp::Elf_Xword value;
3931                 Symbol* tsym;
3932
3933                 tsym = target->tls_get_addr_sym_;
3934                 gold_assert(tsym);
3935                 value = (target->plt_section()->address() +
3936                          tsym->plt_offset());
3937                 symval.set_output_value(value);
3938                 Reloc::wdisp30(view, object, &symval, addend, address);
3939               }
3940               break;
3941             }
3942           break;
3943         }
3944       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
3945                              _("unsupported reloc %u"),
3946                              r_type);
3947       break;
3948
3949       // These relocs can appear in debugging sections, in which case
3950       // we won't see the TLS_LDM relocs.  The local_dynamic_type
3951       // field tells us this.
3952     case elfcpp::R_SPARC_TLS_LDO_HIX22:
3953       if (optimized_type == tls::TLSOPT_TO_LE)
3954         {
3955           value -= tls_segment->memsz();
3956           Reloc::hix22(view, value, addend);
3957         }
3958       else
3959         Reloc::ldo_hix22(view, value, addend);
3960       break;
3961     case elfcpp::R_SPARC_TLS_LDO_LOX10:
3962       if (optimized_type == tls::TLSOPT_TO_LE)
3963         {
3964           value -= tls_segment->memsz();
3965           Reloc::lox10(view, value, addend);
3966         }
3967       else
3968         Reloc::ldo_lox10(view, value, addend);
3969       break;
3970     case elfcpp::R_SPARC_TLS_LDO_ADD:
3971       if (optimized_type == tls::TLSOPT_TO_LE)
3972         {
3973           Insntype* wv = reinterpret_cast<Insntype*>(view);
3974           Insntype val;
3975
3976           // add %reg1, %reg2, %reg3 --> add %g7, %reg2, %reg3
3977           val = elfcpp::Swap<32, true>::readval(wv);
3978           val = (val & ~0x7c000) | 0x1c000;
3979           elfcpp::Swap<32, true>::writeval(wv, val);
3980         }
3981       break;
3982
3983       // When optimizing IE --> LE, the only relocation that is handled
3984       // differently is R_SPARC_TLS_IE_LD, it is rewritten from
3985       // 'ld{,x} [rs1 + rs2], rd' into 'mov rs2, rd' or simply a NOP is
3986       // rs2 and rd are the same.
3987     case elfcpp::R_SPARC_TLS_IE_LD:
3988     case elfcpp::R_SPARC_TLS_IE_LDX:
3989       if (optimized_type == tls::TLSOPT_TO_LE)
3990         {
3991           Insntype* wv = reinterpret_cast<Insntype*>(view);
3992           Insntype val = elfcpp::Swap<32, true>::readval(wv);
3993           Insntype rs2 = val & 0x1f;
3994           Insntype rd = (val >> 25) & 0x1f;
3995
3996           if (rs2 == rd)
3997             val = sparc_nop;
3998           else
3999             val = sparc_mov | (val & 0x3e00001f);
4000
4001           elfcpp::Swap<32, true>::writeval(wv, val);
4002         }
4003       break;
4004
4005     case elfcpp::R_SPARC_TLS_IE_HI22:
4006     case elfcpp::R_SPARC_TLS_IE_LO10:
4007       if (optimized_type == tls::TLSOPT_TO_LE)
4008         {
4009           value -= tls_segment->memsz();
4010           switch (r_type)
4011             {
4012             case elfcpp::R_SPARC_TLS_IE_HI22:
4013               // IE_HI22 --> LE_HIX22
4014               Reloc::hix22(view, value, addend);
4015               break;
4016             case elfcpp::R_SPARC_TLS_IE_LO10:
4017               // IE_LO10 --> LE_LOX10
4018               Reloc::lox10(view, value, addend);
4019               break;
4020             }
4021           break;
4022         }
4023       else if (optimized_type == tls::TLSOPT_NONE)
4024         {
4025           // Relocate the field with the offset of the GOT entry for
4026           // the tp-relative offset of the symbol.
4027           if (gsym != NULL)
4028             {
4029               gold_assert(gsym->has_got_offset(GOT_TYPE_TLS_OFFSET));
4030               value = gsym->got_offset(GOT_TYPE_TLS_OFFSET);
4031             }
4032           else
4033             {
4034               unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
4035               gold_assert(object->local_has_got_offset(r_sym,
4036                                                        GOT_TYPE_TLS_OFFSET));
4037               value = object->local_got_offset(r_sym,
4038                                                GOT_TYPE_TLS_OFFSET);
4039             }
4040           switch (r_type)
4041             {
4042             case elfcpp::R_SPARC_TLS_IE_HI22:
4043               Reloc::hi22(view, value, addend);
4044               break;
4045             case elfcpp::R_SPARC_TLS_IE_LO10:
4046               Reloc::lo10(view, value, addend);
4047               break;
4048             }
4049           break;
4050         }
4051       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
4052                              _("unsupported reloc %u"),
4053                              r_type);
4054       break;
4055
4056     case elfcpp::R_SPARC_TLS_IE_ADD:
4057       // This seems to be mainly so that we can find the addition
4058       // instruction if there is one.  There doesn't seem to be any
4059       // actual relocation to apply.
4060       break;
4061
4062     case elfcpp::R_SPARC_TLS_LE_HIX22:
4063       // If we're creating a shared library, a dynamic relocation will
4064       // have been created for this location, so do not apply it now.
4065       if (!parameters->options().shared())
4066         {
4067           value -= tls_segment->memsz();
4068           Reloc::hix22(view, value, addend);
4069         }
4070       break;
4071
4072     case elfcpp::R_SPARC_TLS_LE_LOX10:
4073       // If we're creating a shared library, a dynamic relocation will
4074       // have been created for this location, so do not apply it now.
4075       if (!parameters->options().shared())
4076         {
4077           value -= tls_segment->memsz();
4078           Reloc::lox10(view, value, addend);
4079         }
4080       break;
4081     }
4082 }
4083
4084 // Relax a call instruction.
4085
4086 template<int size, bool big_endian>
4087 inline void
4088 Target_sparc<size, big_endian>::Relocate::relax_call(
4089     Target_sparc<size, big_endian>* target,
4090     unsigned char* view,
4091     const elfcpp::Rela<size, big_endian>& rela,
4092     section_size_type view_size)
4093 {
4094   typedef typename elfcpp::Swap<32, true>::Valtype Insntype;
4095   Insntype *wv = reinterpret_cast<Insntype*>(view);
4096   Insntype call_insn, delay_insn, set_insn;
4097   uint32_t op3, reg, off;
4098
4099   // This code tries to relax call instructions that meet
4100   // certain criteria.
4101   //
4102   // The first criteria is that the call must be such that the return
4103   // address which the call writes into %o7 is unused.  Two sequences
4104   // meet this criteria, and are used to implement tail calls.
4105   //
4106   // Leaf function tail call:
4107   //
4108   // or %o7, %g0, %ANY_REG
4109   // call FUNC
4110   //  or %ANY_REG, %g0, %o7
4111   //
4112   // Non-leaf function tail call:
4113   //
4114   // call FUNC
4115   //  restore
4116   //
4117   // The second criteria is that the call destination is close.  If
4118   // the displacement can fit in a signed 22-bit immediate field of a
4119   // pre-V9 branch, we can do it.  If we are generating a 64-bit
4120   // object or a 32-bit object with ELF machine type EF_SPARC32PLUS,
4121   // and the displacement fits in a signed 19-bit immediate field,
4122   // then we can use a V9 branch.
4123
4124   // Make sure the delay instruction can be safely accessed.
4125   if (rela.get_r_offset() + 8 > view_size)
4126     return;
4127
4128   call_insn = elfcpp::Swap<32, true>::readval(wv);
4129   delay_insn = elfcpp::Swap<32, true>::readval(wv + 1);
4130
4131   // Make sure it is really a call instruction.
4132   if (((call_insn >> 30) & 0x3) != 1)
4133     return;
4134
4135   if (((delay_insn >> 30) & 0x3) != 2)
4136     return;
4137
4138   // Accept only a restore or an integer arithmetic operation whose
4139   // sole side effect is to write the %o7 register (and perhaps set
4140   // the condition codes, which are considered clobbered across
4141   // function calls).
4142   //
4143   // For example, we don't want to match a tagged addition or
4144   // subtraction.  We also don't want to match something like a
4145   // divide.
4146   //
4147   // Specifically we accept add{,cc}, and{,cc}, or{,cc},
4148   // xor{,cc}, sub{,cc}, andn{,cc}, orn{,cc}, and xnor{,cc}.
4149
4150   op3 = (delay_insn >> 19) & 0x3f;
4151   reg = (delay_insn >> 25) & 0x1f;
4152   if (op3 != 0x3d
4153       && ((op3 & 0x28) != 0 || reg != 15))
4154     return;
4155
4156   // For non-restore instructions, make sure %o7 isn't
4157   // an input.
4158   if (op3 != 0x3d)
4159     {
4160       // First check RS1
4161       reg = (delay_insn >> 14) & 0x15;
4162       if (reg == 15)
4163         return;
4164
4165       // And if non-immediate, check RS2
4166       if (((delay_insn >> 13) & 1) == 0)
4167         {
4168           reg = (delay_insn & 0x1f);
4169           if (reg == 15)
4170             return;
4171         }
4172     }
4173
4174   // Now check the branch distance.  We are called after the
4175   // call has been relocated, so we just have to peek at the
4176   // offset contained in the instruction.
4177   off = call_insn & 0x3fffffff;
4178   if ((off & 0x3fe00000) != 0
4179       && (off & 0x3fe00000) != 0x3fe00000)
4180     return;
4181
4182   if ((size == 64 || target->elf_machine_ == elfcpp::EM_SPARC32PLUS)
4183       && ((off & 0x3c0000) == 0
4184           || (off & 0x3c0000) == 0x3c0000))
4185     {
4186       // ba,pt %xcc, FUNC
4187       call_insn = 0x10680000 | (off & 0x07ffff);
4188     }
4189   else
4190     {
4191       // ba FUNC
4192       call_insn = 0x10800000 | (off & 0x3fffff);
4193     }
4194   elfcpp::Swap<32, true>::writeval(wv, call_insn);
4195
4196   // See if we can NOP out the delay slot instruction.  We peek
4197   // at the instruction before the call to make sure we're dealing
4198   // with exactly the:
4199   //
4200   // or %o7, %g0, %ANY_REG
4201   // call
4202   //  or %ANY_REG, %g0, %o7
4203   //
4204   // case.  Otherwise this might be a tricky piece of hand written
4205   // assembler calculating %o7 in some non-trivial way, and therefore
4206   // we can't be sure that NOP'ing out the delay slot is safe.
4207   if (op3 == 0x02
4208       && rela.get_r_offset() >= 4)
4209     {
4210       if ((delay_insn & ~(0x1f << 14)) != 0x9e100000)
4211         return;
4212
4213       set_insn = elfcpp::Swap<32, true>::readval(wv - 1);
4214       if ((set_insn & ~(0x1f << 25)) != 0x8013c000)
4215         return;
4216
4217       reg = (set_insn >> 25) & 0x1f;
4218       if (reg == 0 || reg == 15)
4219         return;
4220       if (reg != ((delay_insn >> 14) & 0x1f))
4221         return;
4222
4223       // All tests pass, nop it out.
4224       elfcpp::Swap<32, true>::writeval(wv + 1, sparc_nop);
4225     }
4226 }
4227
4228 // Relocate section data.
4229
4230 template<int size, bool big_endian>
4231 void
4232 Target_sparc<size, big_endian>::relocate_section(
4233                         const Relocate_info<size, big_endian>* relinfo,
4234                         unsigned int sh_type,
4235                         const unsigned char* prelocs,
4236                         size_t reloc_count,
4237                         Output_section* output_section,
4238                         bool needs_special_offset_handling,
4239                         unsigned char* view,
4240                         typename elfcpp::Elf_types<size>::Elf_Addr address,
4241                         section_size_type view_size,
4242                         const Reloc_symbol_changes* reloc_symbol_changes)
4243 {
4244   typedef Target_sparc<size, big_endian> Sparc;
4245   typedef typename Target_sparc<size, big_endian>::Relocate Sparc_relocate;
4246   typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian>
4247       Classify_reloc;
4248
4249   gold_assert(sh_type == elfcpp::SHT_RELA);
4250
4251   gold::relocate_section<size, big_endian, Sparc, Sparc_relocate,
4252                          gold::Default_comdat_behavior, Classify_reloc>(
4253     relinfo,
4254     this,
4255     prelocs,
4256     reloc_count,
4257     output_section,
4258     needs_special_offset_handling,
4259     view,
4260     address,
4261     view_size,
4262     reloc_symbol_changes);
4263 }
4264
4265 // Scan the relocs during a relocatable link.
4266
4267 template<int size, bool big_endian>
4268 void
4269 Target_sparc<size, big_endian>::scan_relocatable_relocs(
4270                         Symbol_table* symtab,
4271                         Layout* layout,
4272                         Sized_relobj_file<size, big_endian>* object,
4273                         unsigned int data_shndx,
4274                         unsigned int sh_type,
4275                         const unsigned char* prelocs,
4276                         size_t reloc_count,
4277                         Output_section* output_section,
4278                         bool needs_special_offset_handling,
4279                         size_t local_symbol_count,
4280                         const unsigned char* plocal_symbols,
4281                         Relocatable_relocs* rr)
4282 {
4283   typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian>
4284       Classify_reloc;
4285   typedef gold::Default_scan_relocatable_relocs<Classify_reloc>
4286       Scan_relocatable_relocs;
4287
4288   gold_assert(sh_type == elfcpp::SHT_RELA);
4289
4290   gold::scan_relocatable_relocs<size, big_endian, Scan_relocatable_relocs>(
4291     symtab,
4292     layout,
4293     object,
4294     data_shndx,
4295     prelocs,
4296     reloc_count,
4297     output_section,
4298     needs_special_offset_handling,
4299     local_symbol_count,
4300     plocal_symbols,
4301     rr);
4302 }
4303
4304 // Scan the relocs for --emit-relocs.
4305
4306 template<int size, bool big_endian>
4307 void
4308 Target_sparc<size, big_endian>::emit_relocs_scan(
4309     Symbol_table* symtab,
4310     Layout* layout,
4311     Sized_relobj_file<size, big_endian>* object,
4312     unsigned int data_shndx,
4313     unsigned int sh_type,
4314     const unsigned char* prelocs,
4315     size_t reloc_count,
4316     Output_section* output_section,
4317     bool needs_special_offset_handling,
4318     size_t local_symbol_count,
4319     const unsigned char* plocal_syms,
4320     Relocatable_relocs* rr)
4321 {
4322   typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian>
4323       Classify_reloc;
4324   typedef gold::Default_emit_relocs_strategy<Classify_reloc>
4325       Emit_relocs_strategy;
4326
4327   gold_assert(sh_type == elfcpp::SHT_RELA);
4328
4329   gold::scan_relocatable_relocs<size, big_endian, Emit_relocs_strategy>(
4330     symtab,
4331     layout,
4332     object,
4333     data_shndx,
4334     prelocs,
4335     reloc_count,
4336     output_section,
4337     needs_special_offset_handling,
4338     local_symbol_count,
4339     plocal_syms,
4340     rr);
4341 }
4342
4343 // Emit relocations for a section.
4344
4345 template<int size, bool big_endian>
4346 void
4347 Target_sparc<size, big_endian>::relocate_relocs(
4348     const Relocate_info<size, big_endian>* relinfo,
4349     unsigned int sh_type,
4350     const unsigned char* prelocs,
4351     size_t reloc_count,
4352     Output_section* output_section,
4353     typename elfcpp::Elf_types<size>::Elf_Off offset_in_output_section,
4354     unsigned char* view,
4355     typename elfcpp::Elf_types<size>::Elf_Addr view_address,
4356     section_size_type view_size,
4357     unsigned char* reloc_view,
4358     section_size_type reloc_view_size)
4359 {
4360   typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian>
4361       Classify_reloc;
4362
4363   gold_assert(sh_type == elfcpp::SHT_RELA);
4364
4365   gold::relocate_relocs<size, big_endian, Classify_reloc>(
4366     relinfo,
4367     prelocs,
4368     reloc_count,
4369     output_section,
4370     offset_in_output_section,
4371     view,
4372     view_address,
4373     view_size,
4374     reloc_view,
4375     reloc_view_size);
4376 }
4377
4378 // Return the value to use for a dynamic which requires special
4379 // treatment.  This is how we support equality comparisons of function
4380 // pointers across shared library boundaries, as described in the
4381 // processor specific ABI supplement.
4382
4383 template<int size, bool big_endian>
4384 uint64_t
4385 Target_sparc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const
4386 {
4387   gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset());
4388   return this->plt_section()->address() + gsym->plt_offset();
4389 }
4390
4391 // do_make_elf_object to override the same function in the base class.
4392 // We need to use a target-specific sub-class of
4393 // Sized_relobj_file<size, big_endian> to process SPARC specific bits
4394 // of the ELF headers.  Hence we need to have our own ELF object creation.
4395
4396 template<int size, bool big_endian>
4397 Object*
4398 Target_sparc<size, big_endian>::do_make_elf_object(
4399     const std::string& name,
4400     Input_file* input_file,
4401     off_t offset, const elfcpp::Ehdr<size, big_endian>& ehdr)
4402 {
4403   elfcpp::Elf_Half machine = ehdr.get_e_machine();
4404   elfcpp::Elf_Word flags = ehdr.get_e_flags();
4405   elfcpp::Elf_Word omm, mm;
4406
4407   switch (machine)
4408     {
4409     case elfcpp::EM_SPARC32PLUS:
4410       this->elf_machine_ = elfcpp::EM_SPARC32PLUS;
4411       break;
4412
4413     case elfcpp::EM_SPARC:
4414     case elfcpp::EM_SPARCV9:
4415       break;
4416
4417     default:
4418       break;
4419     }
4420
4421   if (!this->elf_flags_set_)
4422     {
4423       this->elf_flags_ = flags;
4424       this->elf_flags_set_ = true;
4425     }
4426   else
4427     {
4428       // Accumulate cpu feature bits.
4429       this->elf_flags_ |= (flags & (elfcpp::EF_SPARC_32PLUS
4430                                     | elfcpp::EF_SPARC_SUN_US1
4431                                     | elfcpp::EF_SPARC_HAL_R1
4432                                     | elfcpp::EF_SPARC_SUN_US3));
4433
4434       // Bump the memory model setting to the most restrictive
4435       // one we encounter.
4436       omm = (this->elf_flags_ & elfcpp::EF_SPARCV9_MM);
4437       mm = (flags & elfcpp::EF_SPARCV9_MM);
4438       if (omm != mm)
4439         {
4440           if (mm == elfcpp::EF_SPARCV9_TSO)
4441             {
4442               this->elf_flags_ &= ~elfcpp::EF_SPARCV9_MM;
4443               this->elf_flags_ |= elfcpp::EF_SPARCV9_TSO;
4444             }
4445           else if (mm == elfcpp::EF_SPARCV9_PSO
4446                    && omm == elfcpp::EF_SPARCV9_RMO)
4447             {
4448               this->elf_flags_ &= ~elfcpp::EF_SPARCV9_MM;
4449               this->elf_flags_ |= elfcpp::EF_SPARCV9_PSO;
4450             }
4451         }
4452     }
4453
4454   // Validate that the little-endian flag matches how we've
4455   // been instantiated.
4456   if (!(flags & elfcpp::EF_SPARC_LEDATA) != big_endian)
4457     {
4458       if (big_endian)
4459         gold_error(_("%s: little endian elf flag set on BE object"),
4460                      name.c_str());
4461       else
4462         gold_error(_("%s: little endian elf flag clear on LE object"),
4463                      name.c_str());
4464     }
4465
4466   return Target::do_make_elf_object(name, input_file, offset, ehdr);
4467 }
4468
4469 // Adjust ELF file header.
4470
4471 template<int size, bool big_endian>
4472 void
4473 Target_sparc<size, big_endian>::do_adjust_elf_header(
4474     unsigned char* view,
4475     int len)
4476 {
4477   elfcpp::Ehdr_write<size, big_endian> oehdr(view);
4478
4479   oehdr.put_e_machine(this->elf_machine_);
4480   oehdr.put_e_flags(this->elf_flags_);
4481
4482   Sized_target<size, big_endian>::do_adjust_elf_header(view, len);
4483 }
4484
4485 // The selector for sparc object files.
4486
4487 template<int size, bool big_endian>
4488 class Target_selector_sparc : public Target_selector
4489 {
4490 public:
4491   Target_selector_sparc()
4492     : Target_selector(elfcpp::EM_NONE, size, big_endian,
4493                       (size == 64 ? "elf64-sparc" : "elf32-sparc"),
4494                       (size == 64 ? "elf64_sparc" : "elf32_sparc"))
4495   { }
4496
4497   virtual Target*
4498   do_recognize(Input_file*, off_t, int machine, int, int)
4499   {
4500     switch (size)
4501       {
4502       case 64:
4503         if (machine != elfcpp::EM_SPARCV9)
4504           return NULL;
4505         break;
4506
4507       case 32:
4508         if (machine != elfcpp::EM_SPARC
4509             && machine != elfcpp::EM_SPARC32PLUS)
4510           return NULL;
4511         break;
4512
4513       default:
4514         return NULL;
4515       }
4516
4517     return this->instantiate_target();
4518   }
4519
4520   virtual Target*
4521   do_instantiate_target()
4522   { return new Target_sparc<size, big_endian>(); }
4523 };
4524
4525 Target_selector_sparc<32, true> target_selector_sparc32;
4526 Target_selector_sparc<64, true> target_selector_sparc64;
4527
4528 } // End anonymous namespace.