1 // powerpc.cc -- powerpc target support for gold.
3 // Copyright 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
4 // Written by David S. Miller <davem@davemloft.net>
5 // and David Edelsohn <edelsohn@gnu.org>
7 // This file is part of gold.
9 // This program is free software; you can redistribute it and/or modify
10 // it under the terms of the GNU General Public License as published by
11 // the Free Software Foundation; either version 3 of the License, or
12 // (at your option) any later version.
14 // This program is distributed in the hope that it will be useful,
15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 // GNU General Public License for more details.
19 // You should have received a copy of the GNU General Public License
20 // along with this program; if not, write to the Free Software
21 // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 // MA 02110-1301, USA.
29 #include "parameters.h"
36 #include "copy-relocs.h"
38 #include "target-reloc.h"
39 #include "target-select.h"
49 template<int size, bool big_endian>
50 class Output_data_plt_powerpc;
52 template<int size, bool big_endian>
53 class Output_data_brlt_powerpc;
55 template<int size, bool big_endian>
56 class Output_data_got_powerpc;
58 template<int size, bool big_endian>
59 class Output_data_glink;
61 template<int size, bool big_endian>
64 template<int size, bool big_endian>
65 class Powerpc_relobj : public Sized_relobj_file<size, big_endian>
68 typedef typename elfcpp::Elf_types<size>::Elf_Addr Address;
69 typedef Unordered_set<Section_id, Section_id_hash> Section_refs;
70 typedef Unordered_map<Address, Section_refs> Access_from;
72 Powerpc_relobj(const std::string& name, Input_file* input_file, off_t offset,
73 const typename elfcpp::Ehdr<size, big_endian>& ehdr)
74 : Sized_relobj_file<size, big_endian>(name, input_file, offset, ehdr),
75 special_(0), has_small_toc_reloc_(false), opd_valid_(false),
76 opd_ent_(), access_from_map_(), has14_(), stub_table_()
82 // The .got2 section shndx.
87 return this->special_;
92 // The .opd section shndx.
99 return this->special_;
102 // Init OPD entry arrays.
104 init_opd(size_t opd_size)
106 size_t count = this->opd_ent_ndx(opd_size);
107 this->opd_ent_.resize(count);
110 // Return section and offset of function entry for .opd + R_OFF.
112 get_opd_ent(Address r_off, Address* value = NULL) const
114 size_t ndx = this->opd_ent_ndx(r_off);
115 gold_assert(ndx < this->opd_ent_.size());
116 gold_assert(this->opd_ent_[ndx].shndx != 0);
118 *value = this->opd_ent_[ndx].off;
119 return this->opd_ent_[ndx].shndx;
122 // Set section and offset of function entry for .opd + R_OFF.
124 set_opd_ent(Address r_off, unsigned int shndx, Address value)
126 size_t ndx = this->opd_ent_ndx(r_off);
127 gold_assert(ndx < this->opd_ent_.size());
128 this->opd_ent_[ndx].shndx = shndx;
129 this->opd_ent_[ndx].off = value;
132 // Return discard flag for .opd + R_OFF.
134 get_opd_discard(Address r_off) const
136 size_t ndx = this->opd_ent_ndx(r_off);
137 gold_assert(ndx < this->opd_ent_.size());
138 return this->opd_ent_[ndx].discard;
141 // Set discard flag for .opd + R_OFF.
143 set_opd_discard(Address r_off)
145 size_t ndx = this->opd_ent_ndx(r_off);
146 gold_assert(ndx < this->opd_ent_.size());
147 this->opd_ent_[ndx].discard = true;
152 { return this->opd_valid_; }
156 { this->opd_valid_ = true; }
158 // Examine .rela.opd to build info about function entry points.
160 scan_opd_relocs(size_t reloc_count,
161 const unsigned char* prelocs,
162 const unsigned char* plocal_syms);
164 // Perform the Sized_relobj_file method, then set up opd info from
167 do_read_relocs(Read_relocs_data*);
170 do_find_special_sections(Read_symbols_data* sd);
172 // Adjust this local symbol value. Return false if the symbol
173 // should be discarded from the output file.
175 do_adjust_local_symbol(Symbol_value<size>* lv) const
177 if (size == 64 && this->opd_shndx() != 0)
180 if (lv->input_shndx(&is_ordinary) != this->opd_shndx())
182 if (this->get_opd_discard(lv->input_value()))
190 { return &this->access_from_map_; }
192 // Add a reference from SRC_OBJ, SRC_INDX to this object's .opd
193 // section at DST_OFF.
195 add_reference(Object* src_obj,
196 unsigned int src_indx,
197 typename elfcpp::Elf_types<size>::Elf_Addr dst_off)
199 Section_id src_id(src_obj, src_indx);
200 this->access_from_map_[dst_off].insert(src_id);
203 // Add a reference to the code section specified by the .opd entry
206 add_gc_mark(typename elfcpp::Elf_types<size>::Elf_Addr dst_off)
208 size_t ndx = this->opd_ent_ndx(dst_off);
209 if (ndx >= this->opd_ent_.size())
210 this->opd_ent_.resize(ndx + 1);
211 this->opd_ent_[ndx].gc_mark = true;
215 process_gc_mark(Symbol_table* symtab)
217 for (size_t i = 0; i < this->opd_ent_.size(); i++)
218 if (this->opd_ent_[i].gc_mark)
220 unsigned int shndx = this->opd_ent_[i].shndx;
221 symtab->gc()->worklist().push(Section_id(this, shndx));
225 // Return offset in output GOT section that this object will use
226 // as a TOC pointer. Won't be just a constant with multi-toc support.
228 toc_base_offset() const
232 set_has_small_toc_reloc()
233 { has_small_toc_reloc_ = true; }
236 has_small_toc_reloc() const
237 { return has_small_toc_reloc_; }
240 set_has_14bit_branch(unsigned int shndx)
242 if (shndx >= this->has14_.size())
243 this->has14_.resize(shndx + 1);
244 this->has14_[shndx] = true;
248 has_14bit_branch(unsigned int shndx) const
249 { return shndx < this->has14_.size() && this->has14_[shndx]; }
252 set_stub_table(unsigned int shndx, Stub_table<size, big_endian>* stub_table)
254 if (shndx >= this->stub_table_.size())
255 this->stub_table_.resize(shndx + 1);
256 this->stub_table_[shndx] = stub_table;
259 Stub_table<size, big_endian>*
260 stub_table(unsigned int shndx)
262 if (shndx < this->stub_table_.size())
263 return this->stub_table_[shndx];
276 // Return index into opd_ent_ array for .opd entry at OFF.
277 // .opd entries are 24 bytes long, but they can be spaced 16 bytes
278 // apart when the language doesn't use the last 8-byte word, the
279 // environment pointer. Thus dividing the entry section offset by
280 // 16 will give an index into opd_ent_ that works for either layout
281 // of .opd. (It leaves some elements of the vector unused when .opd
282 // entries are spaced 24 bytes apart, but we don't know the spacing
283 // until relocations are processed, and in any case it is possible
284 // for an object to have some entries spaced 16 bytes apart and
285 // others 24 bytes apart.)
287 opd_ent_ndx(size_t off) const
290 // For 32-bit the .got2 section shdnx, for 64-bit the .opd section shndx.
291 unsigned int special_;
293 // For 64-bit, whether this object uses small model relocs to access
295 bool has_small_toc_reloc_;
297 // Set at the start of gc_process_relocs, when we know opd_ent_
298 // vector is valid. The flag could be made atomic and set in
299 // do_read_relocs with memory_order_release and then tested with
300 // memory_order_acquire, potentially resulting in fewer entries in
304 // The first 8-byte word of an OPD entry gives the address of the
305 // entry point of the function. Relocatable object files have a
306 // relocation on this word. The following vector records the
307 // section and offset specified by these relocations.
308 std::vector<Opd_ent> opd_ent_;
310 // References made to this object's .opd section when running
311 // gc_process_relocs for another object, before the opd_ent_ vector
312 // is valid for this object.
313 Access_from access_from_map_;
315 // Whether input section has a 14-bit branch reloc.
316 std::vector<bool> has14_;
318 // The stub table to use for a given input section.
319 std::vector<Stub_table<size, big_endian>*> stub_table_;
322 template<int size, bool big_endian>
323 class Target_powerpc : public Sized_target<size, big_endian>
327 Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section;
328 typedef typename elfcpp::Elf_types<size>::Elf_Addr Address;
329 typedef typename elfcpp::Elf_types<size>::Elf_Swxword Signed_address;
330 static const Address invalid_address = static_cast<Address>(0) - 1;
331 // Offset of tp and dtp pointers from start of TLS block.
332 static const Address tp_offset = 0x7000;
333 static const Address dtp_offset = 0x8000;
336 : Sized_target<size, big_endian>(&powerpc_info),
337 got_(NULL), plt_(NULL), iplt_(NULL), brlt_section_(NULL),
338 glink_(NULL), rela_dyn_(NULL), copy_relocs_(elfcpp::R_POWERPC_COPY),
339 dynbss_(NULL), tlsld_got_offset_(-1U),
340 stub_tables_(), branch_lookup_table_(), branch_info_(),
341 plt_thread_safe_(false)
345 // Process the relocations to determine unreferenced sections for
346 // garbage collection.
348 gc_process_relocs(Symbol_table* symtab,
350 Sized_relobj_file<size, big_endian>* object,
351 unsigned int data_shndx,
352 unsigned int sh_type,
353 const unsigned char* prelocs,
355 Output_section* output_section,
356 bool needs_special_offset_handling,
357 size_t local_symbol_count,
358 const unsigned char* plocal_symbols);
360 // Scan the relocations to look for symbol adjustments.
362 scan_relocs(Symbol_table* symtab,
364 Sized_relobj_file<size, big_endian>* object,
365 unsigned int data_shndx,
366 unsigned int sh_type,
367 const unsigned char* prelocs,
369 Output_section* output_section,
370 bool needs_special_offset_handling,
371 size_t local_symbol_count,
372 const unsigned char* plocal_symbols);
374 // Map input .toc section to output .got section.
376 do_output_section_name(const Relobj*, const char* name, size_t* plen) const
378 if (size == 64 && strcmp(name, ".toc") == 0)
386 // Provide linker defined save/restore functions.
388 define_save_restore_funcs(Layout*, Symbol_table*);
390 // No stubs unless a final link.
393 { return !parameters->options().relocatable(); }
396 do_relax(int, const Input_objects*, Symbol_table*, Layout*, const Task*);
399 do_plt_fde_location(const Output_data*, unsigned char*,
400 uint64_t*, off_t*) const;
402 // Stash info about branches, for stub generation.
404 push_branch(Powerpc_relobj<size, big_endian>* ppc_object,
405 unsigned int data_shndx, Address r_offset,
406 unsigned int r_type, unsigned int r_sym, Address addend)
408 Branch_info info(ppc_object, data_shndx, r_offset, r_type, r_sym, addend);
409 this->branch_info_.push_back(info);
410 if (r_type == elfcpp::R_POWERPC_REL14
411 || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN
412 || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN)
413 ppc_object->set_has_14bit_branch(data_shndx);
416 Stub_table<size, big_endian>*
420 do_define_standard_symbols(Symbol_table*, Layout*);
422 // Finalize the sections.
424 do_finalize_sections(Layout*, const Input_objects*, Symbol_table*);
426 // Return the value to use for a dynamic which requires special
429 do_dynsym_value(const Symbol*) const;
431 // Return the PLT address to use for a local symbol.
433 do_plt_address_for_local(const Relobj*, unsigned int) const;
435 // Return the PLT address to use for a global symbol.
437 do_plt_address_for_global(const Symbol*) const;
439 // Return the offset to use for the GOT_INDX'th got entry which is
440 // for a local tls symbol specified by OBJECT, SYMNDX.
442 do_tls_offset_for_local(const Relobj* object,
444 unsigned int got_indx) const;
446 // Return the offset to use for the GOT_INDX'th got entry which is
447 // for global tls symbol GSYM.
449 do_tls_offset_for_global(Symbol* gsym, unsigned int got_indx) const;
451 // Relocate a section.
453 relocate_section(const Relocate_info<size, big_endian>*,
454 unsigned int sh_type,
455 const unsigned char* prelocs,
457 Output_section* output_section,
458 bool needs_special_offset_handling,
460 Address view_address,
461 section_size_type view_size,
462 const Reloc_symbol_changes*);
464 // Scan the relocs during a relocatable link.
466 scan_relocatable_relocs(Symbol_table* symtab,
468 Sized_relobj_file<size, big_endian>* object,
469 unsigned int data_shndx,
470 unsigned int sh_type,
471 const unsigned char* prelocs,
473 Output_section* output_section,
474 bool needs_special_offset_handling,
475 size_t local_symbol_count,
476 const unsigned char* plocal_symbols,
477 Relocatable_relocs*);
479 // Emit relocations for a section.
481 relocate_relocs(const Relocate_info<size, big_endian>*,
482 unsigned int sh_type,
483 const unsigned char* prelocs,
485 Output_section* output_section,
486 typename elfcpp::Elf_types<size>::Elf_Off
487 offset_in_output_section,
488 const Relocatable_relocs*,
490 Address view_address,
492 unsigned char* reloc_view,
493 section_size_type reloc_view_size);
495 // Return whether SYM is defined by the ABI.
497 do_is_defined_by_abi(const Symbol* sym) const
499 return strcmp(sym->name(), "__tls_get_addr") == 0;
502 // Return the size of the GOT section.
506 gold_assert(this->got_ != NULL);
507 return this->got_->data_size();
510 // Get the PLT section.
511 const Output_data_plt_powerpc<size, big_endian>*
514 gold_assert(this->plt_ != NULL);
518 // Get the IPLT section.
519 const Output_data_plt_powerpc<size, big_endian>*
522 gold_assert(this->iplt_ != NULL);
526 // Get the .glink section.
527 const Output_data_glink<size, big_endian>*
528 glink_section() const
530 gold_assert(this->glink_ != NULL);
534 bool has_glink() const
535 { return this->glink_ != NULL; }
537 // Get the GOT section.
538 const Output_data_got_powerpc<size, big_endian>*
541 gold_assert(this->got_ != NULL);
545 // Get the GOT section, creating it if necessary.
546 Output_data_got_powerpc<size, big_endian>*
547 got_section(Symbol_table*, Layout*);
550 do_make_elf_object(const std::string&, Input_file*, off_t,
551 const elfcpp::Ehdr<size, big_endian>&);
553 // Return the number of entries in the GOT.
555 got_entry_count() const
557 if (this->got_ == NULL)
559 return this->got_size() / (size / 8);
562 // Return the number of entries in the PLT.
564 plt_entry_count() const;
566 // Return the offset of the first non-reserved PLT entry.
568 first_plt_entry_offset() const;
570 // Return the size of each PLT entry.
572 plt_entry_size() const;
574 // Add any special sections for this symbol to the gc work list.
575 // For powerpc64, this adds the code section of a function
578 do_gc_mark_symbol(Symbol_table* symtab, Symbol* sym) const;
580 // Handle target specific gc actions when adding a gc reference from
581 // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX
582 // and DST_OFF. For powerpc64, this adds a referenc to the code
583 // section of a function descriptor.
585 do_gc_add_reference(Symbol_table* symtab,
587 unsigned int src_shndx,
589 unsigned int dst_shndx,
590 Address dst_off) const;
592 typedef std::vector<Stub_table<size, big_endian>*> Stub_tables;
595 { return this->stub_tables_; }
597 const Output_data_brlt_powerpc<size, big_endian>*
599 { return this->brlt_section_; }
602 add_branch_lookup_table(Address to)
604 unsigned int off = this->branch_lookup_table_.size() * (size / 8);
605 this->branch_lookup_table_.insert(std::make_pair(to, off));
609 find_branch_lookup_table(Address to)
611 typename Branch_lookup_table::const_iterator p
612 = this->branch_lookup_table_.find(to);
613 return p == this->branch_lookup_table_.end() ? invalid_address : p->second;
617 write_branch_lookup_table(unsigned char *oview)
619 for (typename Branch_lookup_table::const_iterator p
620 = this->branch_lookup_table_.begin();
621 p != this->branch_lookup_table_.end();
624 elfcpp::Swap<32, big_endian>::writeval(oview + p->second, p->first);
629 plt_thread_safe() const
630 { return this->plt_thread_safe_; }
646 : tls_get_addr_(NOT_EXPECTED),
647 relinfo_(NULL), relnum_(0), r_offset_(0)
652 if (this->tls_get_addr_ != NOT_EXPECTED)
659 if (this->relinfo_ != NULL)
660 gold_error_at_location(this->relinfo_, this->relnum_, this->r_offset_,
661 _("missing expected __tls_get_addr call"));
665 expect_tls_get_addr_call(
666 const Relocate_info<size, big_endian>* relinfo,
670 this->tls_get_addr_ = EXPECTED;
671 this->relinfo_ = relinfo;
672 this->relnum_ = relnum;
673 this->r_offset_ = r_offset;
677 expect_tls_get_addr_call()
678 { this->tls_get_addr_ = EXPECTED; }
681 skip_next_tls_get_addr_call()
682 {this->tls_get_addr_ = SKIP; }
685 maybe_skip_tls_get_addr_call(unsigned int r_type, const Symbol* gsym)
687 bool is_tls_call = ((r_type == elfcpp::R_POWERPC_REL24
688 || r_type == elfcpp::R_PPC_PLTREL24)
690 && strcmp(gsym->name(), "__tls_get_addr") == 0);
691 Tls_get_addr last_tls = this->tls_get_addr_;
692 this->tls_get_addr_ = NOT_EXPECTED;
693 if (is_tls_call && last_tls != EXPECTED)
695 else if (!is_tls_call && last_tls != NOT_EXPECTED)
704 // What we're up to regarding calls to __tls_get_addr.
705 // On powerpc, the branch and link insn making a call to
706 // __tls_get_addr is marked with a relocation, R_PPC64_TLSGD,
707 // R_PPC64_TLSLD, R_PPC_TLSGD or R_PPC_TLSLD, in addition to the
708 // usual R_POWERPC_REL24 or R_PPC_PLTREL25 relocation on a call.
709 // The marker relocation always comes first, and has the same
710 // symbol as the reloc on the insn setting up the __tls_get_addr
711 // argument. This ties the arg setup insn with the call insn,
712 // allowing ld to safely optimize away the call. We check that
713 // every call to __tls_get_addr has a marker relocation, and that
714 // every marker relocation is on a call to __tls_get_addr.
715 Tls_get_addr tls_get_addr_;
716 // Info about the last reloc for error message.
717 const Relocate_info<size, big_endian>* relinfo_;
722 // The class which scans relocations.
723 class Scan : protected Track_tls
726 typedef typename elfcpp::Elf_types<size>::Elf_Addr Address;
729 : Track_tls(), issued_non_pic_error_(false)
733 get_reference_flags(unsigned int r_type);
736 local(Symbol_table* symtab, Layout* layout, Target_powerpc* target,
737 Sized_relobj_file<size, big_endian>* object,
738 unsigned int data_shndx,
739 Output_section* output_section,
740 const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type,
741 const elfcpp::Sym<size, big_endian>& lsym,
745 global(Symbol_table* symtab, Layout* layout, Target_powerpc* target,
746 Sized_relobj_file<size, big_endian>* object,
747 unsigned int data_shndx,
748 Output_section* output_section,
749 const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type,
753 local_reloc_may_be_function_pointer(Symbol_table* , Layout* ,
755 Sized_relobj_file<size, big_endian>* ,
758 const elfcpp::Rela<size, big_endian>& ,
760 const elfcpp::Sym<size, big_endian>&)
764 global_reloc_may_be_function_pointer(Symbol_table* , Layout* ,
766 Sized_relobj_file<size, big_endian>* ,
769 const elfcpp::Rela<size,
771 unsigned int , Symbol*)
776 unsupported_reloc_local(Sized_relobj_file<size, big_endian>*,
777 unsigned int r_type);
780 unsupported_reloc_global(Sized_relobj_file<size, big_endian>*,
781 unsigned int r_type, Symbol*);
784 generate_tls_call(Symbol_table* symtab, Layout* layout,
785 Target_powerpc* target);
788 check_non_pic(Relobj*, unsigned int r_type);
791 reloc_needs_plt_for_ifunc(Sized_relobj_file<size, big_endian>* object,
792 unsigned int r_type);
794 // Whether we have issued an error about a non-PIC compilation.
795 bool issued_non_pic_error_;
799 symval_for_branch(const Symbol_table* symtab, Address value,
800 const Sized_symbol<size>* gsym,
801 Powerpc_relobj<size, big_endian>* object,
802 unsigned int *dest_shndx);
804 // The class which implements relocation.
805 class Relocate : protected Track_tls
808 // Use 'at' branch hints when true, 'y' when false.
809 // FIXME maybe: set this with an option.
810 static const bool is_isa_v2 = true;
816 // Do a relocation. Return false if the caller should not issue
817 // any warnings about this relocation.
819 relocate(const Relocate_info<size, big_endian>*, Target_powerpc*,
820 Output_section*, size_t relnum,
821 const elfcpp::Rela<size, big_endian>&,
822 unsigned int r_type, const Sized_symbol<size>*,
823 const Symbol_value<size>*,
825 typename elfcpp::Elf_types<size>::Elf_Addr,
829 class Relocate_comdat_behavior
832 // Decide what the linker should do for relocations that refer to
833 // discarded comdat sections.
834 inline Comdat_behavior
835 get(const char* name)
837 gold::Default_comdat_behavior default_behavior;
838 Comdat_behavior ret = default_behavior.get(name);
839 if (ret == CB_WARNING)
842 && (strcmp(name, ".fixup") == 0
843 || strcmp(name, ".got2") == 0))
846 && (strcmp(name, ".opd") == 0
847 || strcmp(name, ".toc") == 0
848 || strcmp(name, ".toc1") == 0))
855 // A class which returns the size required for a relocation type,
856 // used while scanning relocs during a relocatable link.
857 class Relocatable_size_for_reloc
861 get_size_for_reloc(unsigned int, Relobj*)
868 // Optimize the TLS relocation type based on what we know about the
869 // symbol. IS_FINAL is true if the final address of this symbol is
870 // known at link time.
872 tls::Tls_optimization
873 optimize_tls_gd(bool is_final)
875 // If we are generating a shared library, then we can't do anything
877 if (parameters->options().shared())
878 return tls::TLSOPT_NONE;
881 return tls::TLSOPT_TO_IE;
882 return tls::TLSOPT_TO_LE;
885 tls::Tls_optimization
888 if (parameters->options().shared())
889 return tls::TLSOPT_NONE;
891 return tls::TLSOPT_TO_LE;
894 tls::Tls_optimization
895 optimize_tls_ie(bool is_final)
897 if (!is_final || parameters->options().shared())
898 return tls::TLSOPT_NONE;
900 return tls::TLSOPT_TO_LE;
905 make_glink_section(Layout*);
907 // Create the PLT section.
909 make_plt_section(Symbol_table*, Layout*);
912 make_iplt_section(Symbol_table*, Layout*);
915 make_brlt_section(Layout*);
917 // Create a PLT entry for a global symbol.
919 make_plt_entry(Symbol_table*, Layout*, Symbol*);
921 // Create a PLT entry for a local IFUNC symbol.
923 make_local_ifunc_plt_entry(Symbol_table*, Layout*,
924 Sized_relobj_file<size, big_endian>*,
928 // Create a GOT entry for local dynamic __tls_get_addr.
930 tlsld_got_offset(Symbol_table* symtab, Layout* layout,
931 Sized_relobj_file<size, big_endian>* object);
934 tlsld_got_offset() const
936 return this->tlsld_got_offset_;
939 // Get the dynamic reloc section, creating it if necessary.
941 rela_dyn_section(Layout*);
943 // Copy a relocation against a global symbol.
945 copy_reloc(Symbol_table* symtab, Layout* layout,
946 Sized_relobj_file<size, big_endian>* object,
947 unsigned int shndx, Output_section* output_section,
948 Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc)
950 this->copy_relocs_.copy_reloc(symtab, layout,
951 symtab->get_sized_symbol<size>(sym),
952 object, shndx, output_section,
953 reloc, this->rela_dyn_section(layout));
956 // Look over all the input sections, deciding where to place stub.
958 group_sections(Layout*, const Task*);
960 // Sort output sections by address.
964 operator()(const Output_section* sec1, const Output_section* sec2)
965 { return sec1->address() < sec2->address(); }
971 Branch_info(Powerpc_relobj<size, big_endian>* ppc_object,
972 unsigned int data_shndx,
977 : object_(ppc_object), shndx_(data_shndx), offset_(r_offset),
978 r_type_(r_type), r_sym_(r_sym), addend_(addend)
984 // If this branch needs a plt call stub, or a long branch stub, make one.
986 make_stub(Stub_table<size, big_endian>*,
987 Stub_table<size, big_endian>*,
988 Symbol_table*) const;
991 // The branch location..
992 Powerpc_relobj<size, big_endian>* object_;
995 // ..and the branch type and destination.
996 unsigned int r_type_;
1001 // Information about this specific target which we pass to the
1002 // general Target structure.
1003 static Target::Target_info powerpc_info;
1005 // The types of GOT entries needed for this platform.
1006 // These values are exposed to the ABI in an incremental link.
1007 // Do not renumber existing values without changing the version
1008 // number of the .gnu_incremental_inputs section.
1012 GOT_TYPE_TLSGD, // double entry for @got@tlsgd
1013 GOT_TYPE_DTPREL, // entry for @got@dtprel
1014 GOT_TYPE_TPREL // entry for @got@tprel
1018 Output_data_got_powerpc<size, big_endian>* got_;
1020 Output_data_plt_powerpc<size, big_endian>* plt_;
1021 // The IPLT section.
1022 Output_data_plt_powerpc<size, big_endian>* iplt_;
1023 // Section holding long branch destinations.
1024 Output_data_brlt_powerpc<size, big_endian>* brlt_section_;
1025 // The .glink section.
1026 Output_data_glink<size, big_endian>* glink_;
1027 // The dynamic reloc section.
1028 Reloc_section* rela_dyn_;
1029 // Relocs saved to avoid a COPY reloc.
1030 Copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_;
1031 // Space for variables copied with a COPY reloc.
1032 Output_data_space* dynbss_;
1033 // Offset of the GOT entry for local dynamic __tls_get_addr calls.
1034 unsigned int tlsld_got_offset_;
1036 Stub_tables stub_tables_;
1037 typedef Unordered_map<Address, unsigned int> Branch_lookup_table;
1038 Branch_lookup_table branch_lookup_table_;
1040 typedef std::vector<Branch_info> Branches;
1041 Branches branch_info_;
1043 bool plt_thread_safe_;
1047 Target::Target_info Target_powerpc<32, true>::powerpc_info =
1050 true, // is_big_endian
1051 elfcpp::EM_PPC, // machine_code
1052 false, // has_make_symbol
1053 false, // has_resolve
1054 false, // has_code_fill
1055 true, // is_default_stack_executable
1056 false, // can_icf_inline_merge_sections
1058 "/usr/lib/ld.so.1", // dynamic_linker
1059 0x10000000, // default_text_segment_address
1060 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1061 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1062 false, // isolate_execinstr
1064 elfcpp::SHN_UNDEF, // small_common_shndx
1065 elfcpp::SHN_UNDEF, // large_common_shndx
1066 0, // small_common_section_flags
1067 0, // large_common_section_flags
1068 NULL, // attributes_section
1069 NULL // attributes_vendor
1073 Target::Target_info Target_powerpc<32, false>::powerpc_info =
1076 false, // is_big_endian
1077 elfcpp::EM_PPC, // machine_code
1078 false, // has_make_symbol
1079 false, // has_resolve
1080 false, // has_code_fill
1081 true, // is_default_stack_executable
1082 false, // can_icf_inline_merge_sections
1084 "/usr/lib/ld.so.1", // dynamic_linker
1085 0x10000000, // default_text_segment_address
1086 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1087 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1088 false, // isolate_execinstr
1090 elfcpp::SHN_UNDEF, // small_common_shndx
1091 elfcpp::SHN_UNDEF, // large_common_shndx
1092 0, // small_common_section_flags
1093 0, // large_common_section_flags
1094 NULL, // attributes_section
1095 NULL // attributes_vendor
1099 Target::Target_info Target_powerpc<64, true>::powerpc_info =
1102 true, // is_big_endian
1103 elfcpp::EM_PPC64, // machine_code
1104 false, // has_make_symbol
1105 false, // has_resolve
1106 false, // has_code_fill
1107 true, // is_default_stack_executable
1108 false, // can_icf_inline_merge_sections
1110 "/usr/lib/ld.so.1", // dynamic_linker
1111 0x10000000, // default_text_segment_address
1112 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1113 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1114 false, // isolate_execinstr
1116 elfcpp::SHN_UNDEF, // small_common_shndx
1117 elfcpp::SHN_UNDEF, // large_common_shndx
1118 0, // small_common_section_flags
1119 0, // large_common_section_flags
1120 NULL, // attributes_section
1121 NULL // attributes_vendor
1125 Target::Target_info Target_powerpc<64, false>::powerpc_info =
1128 false, // is_big_endian
1129 elfcpp::EM_PPC64, // machine_code
1130 false, // has_make_symbol
1131 false, // has_resolve
1132 false, // has_code_fill
1133 true, // is_default_stack_executable
1134 false, // can_icf_inline_merge_sections
1136 "/usr/lib/ld.so.1", // dynamic_linker
1137 0x10000000, // default_text_segment_address
1138 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1139 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1140 false, // isolate_execinstr
1142 elfcpp::SHN_UNDEF, // small_common_shndx
1143 elfcpp::SHN_UNDEF, // large_common_shndx
1144 0, // small_common_section_flags
1145 0, // large_common_section_flags
1146 NULL, // attributes_section
1147 NULL // attributes_vendor
1151 is_branch_reloc(unsigned int r_type)
1153 return (r_type == elfcpp::R_POWERPC_REL24
1154 || r_type == elfcpp::R_PPC_PLTREL24
1155 || r_type == elfcpp::R_PPC_LOCAL24PC
1156 || r_type == elfcpp::R_POWERPC_REL14
1157 || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN
1158 || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN
1159 || r_type == elfcpp::R_POWERPC_ADDR24
1160 || r_type == elfcpp::R_POWERPC_ADDR14
1161 || r_type == elfcpp::R_POWERPC_ADDR14_BRTAKEN
1162 || r_type == elfcpp::R_POWERPC_ADDR14_BRNTAKEN);
1165 // If INSN is an opcode that may be used with an @tls operand, return
1166 // the transformed insn for TLS optimisation, otherwise return 0. If
1167 // REG is non-zero only match an insn with RB or RA equal to REG.
1169 at_tls_transform(uint32_t insn, unsigned int reg)
1171 if ((insn & (0x3f << 26)) != 31 << 26)
1175 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
1176 rtra = insn & ((1 << 26) - (1 << 16));
1177 else if (((insn >> 16) & 0x1f) == reg)
1178 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
1182 if ((insn & (0x3ff << 1)) == 266 << 1)
1185 else if ((insn & (0x1f << 1)) == 23 << 1
1186 && ((insn & (0x1f << 6)) < 14 << 6
1187 || ((insn & (0x1f << 6)) >= 16 << 6
1188 && (insn & (0x1f << 6)) < 24 << 6)))
1189 // load and store indexed -> dform
1190 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
1191 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
1192 // ldx, ldux, stdx, stdux -> ld, ldu, std, stdu
1193 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
1194 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
1196 insn = (58 << 26) | 2;
1203 // Modified version of symtab.h class Symbol member
1204 // Given a direct absolute or pc-relative static relocation against
1205 // the global symbol, this function returns whether a dynamic relocation
1210 needs_dynamic_reloc(const Symbol* gsym, int flags)
1212 // No dynamic relocations in a static link!
1213 if (parameters->doing_static_link())
1216 // A reference to an undefined symbol from an executable should be
1217 // statically resolved to 0, and does not need a dynamic relocation.
1218 // This matches gnu ld behavior.
1219 if (gsym->is_undefined() && !parameters->options().shared())
1222 // A reference to an absolute symbol does not need a dynamic relocation.
1223 if (gsym->is_absolute())
1226 // An absolute reference within a position-independent output file
1227 // will need a dynamic relocation.
1228 if ((flags & Symbol::ABSOLUTE_REF)
1229 && parameters->options().output_is_position_independent())
1232 // A function call that can branch to a local PLT entry does not need
1233 // a dynamic relocation.
1234 if ((flags & Symbol::FUNCTION_CALL) && gsym->has_plt_offset())
1237 // A reference to any PLT entry in a non-position-independent executable
1238 // does not need a dynamic relocation.
1239 // Except due to having function descriptors on powerpc64 we don't define
1240 // functions to their plt code in an executable, so this doesn't apply.
1242 && !parameters->options().output_is_position_independent()
1243 && gsym->has_plt_offset())
1246 // A reference to a symbol defined in a dynamic object or to a
1247 // symbol that is preemptible will need a dynamic relocation.
1248 if (gsym->is_from_dynobj()
1249 || gsym->is_undefined()
1250 || gsym->is_preemptible())
1253 // For all other cases, return FALSE.
1257 // Modified version of symtab.h class Symbol member
1258 // Whether we should use the PLT offset associated with a symbol for
1259 // a relocation. FLAGS is a set of Reference_flags.
1263 use_plt_offset(const Symbol* gsym, int flags)
1265 // If the symbol doesn't have a PLT offset, then naturally we
1266 // don't want to use it.
1267 if (!gsym->has_plt_offset())
1270 // For a STT_GNU_IFUNC symbol we always have to use the PLT entry.
1271 if (gsym->type() == elfcpp::STT_GNU_IFUNC)
1274 // If we are going to generate a dynamic relocation, then we will
1275 // wind up using that, so no need to use the PLT entry.
1276 if (needs_dynamic_reloc<size>(gsym, flags))
1279 // If the symbol is from a dynamic object, we need to use the PLT
1281 if (gsym->is_from_dynobj())
1284 // If we are generating a shared object, and this symbol is
1285 // undefined or preemptible, we need to use the PLT entry.
1286 if (parameters->options().shared()
1287 && (gsym->is_undefined() || gsym->is_preemptible()))
1290 // If this is a call to a weak undefined symbol, we need to use
1291 // the PLT entry; the symbol may be defined by a library loaded
1293 if ((flags & Symbol::FUNCTION_CALL) && gsym->is_weak_undefined())
1296 // Otherwise we can use the regular definition.
1300 template<int size, bool big_endian>
1301 class Powerpc_relocate_functions
1318 typedef Powerpc_relocate_functions<size, big_endian> This;
1319 typedef typename elfcpp::Elf_types<size>::Elf_Addr Address;
1321 template<int valsize>
1323 has_overflow_signed(Address value)
1325 // limit = 1 << (valsize - 1) without shift count exceeding size of type
1326 Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1);
1327 limit <<= ((valsize - 1) >> 1);
1328 limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1));
1329 return value + limit > (limit << 1) - 1;
1332 template<int valsize>
1334 has_overflow_bitfield(Address value)
1336 Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1);
1337 limit <<= ((valsize - 1) >> 1);
1338 limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1));
1339 return value > (limit << 1) - 1 && value + limit > (limit << 1) - 1;
1342 template<int valsize>
1343 static inline Status
1344 overflowed(Address value, Overflow_check overflow)
1346 if (overflow == CHECK_SIGNED)
1348 if (has_overflow_signed<valsize>(value))
1349 return STATUS_OVERFLOW;
1351 else if (overflow == CHECK_BITFIELD)
1353 if (has_overflow_bitfield<valsize>(value))
1354 return STATUS_OVERFLOW;
1359 // Do a simple RELA relocation
1360 template<int valsize>
1361 static inline Status
1362 rela(unsigned char* view, Address value, Overflow_check overflow)
1364 typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
1365 Valtype* wv = reinterpret_cast<Valtype*>(view);
1366 elfcpp::Swap<valsize, big_endian>::writeval(wv, value);
1367 return overflowed<valsize>(value, overflow);
1370 template<int valsize>
1371 static inline Status
1372 rela(unsigned char* view,
1373 unsigned int right_shift,
1374 typename elfcpp::Valtype_base<valsize>::Valtype dst_mask,
1376 Overflow_check overflow)
1378 typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
1379 Valtype* wv = reinterpret_cast<Valtype*>(view);
1380 Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
1381 Valtype reloc = value >> right_shift;
1384 elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
1385 return overflowed<valsize>(value >> right_shift, overflow);
1388 // Do a simple RELA relocation, unaligned.
1389 template<int valsize>
1390 static inline Status
1391 rela_ua(unsigned char* view, Address value, Overflow_check overflow)
1393 elfcpp::Swap_unaligned<valsize, big_endian>::writeval(view, value);
1394 return overflowed<valsize>(value, overflow);
1397 template<int valsize>
1398 static inline Status
1399 rela_ua(unsigned char* view,
1400 unsigned int right_shift,
1401 typename elfcpp::Valtype_base<valsize>::Valtype dst_mask,
1403 Overflow_check overflow)
1405 typedef typename elfcpp::Swap_unaligned<valsize, big_endian>::Valtype
1407 Valtype val = elfcpp::Swap<valsize, big_endian>::readval(view);
1408 Valtype reloc = value >> right_shift;
1411 elfcpp::Swap_unaligned<valsize, big_endian>::writeval(view, val | reloc);
1412 return overflowed<valsize>(value >> right_shift, overflow);
1416 // R_PPC64_ADDR64: (Symbol + Addend)
1418 addr64(unsigned char* view, Address value)
1419 { This::template rela<64>(view, value, CHECK_NONE); }
1421 // R_PPC64_UADDR64: (Symbol + Addend) unaligned
1423 addr64_u(unsigned char* view, Address value)
1424 { This::template rela_ua<64>(view, value, CHECK_NONE); }
1426 // R_POWERPC_ADDR32: (Symbol + Addend)
1427 static inline Status
1428 addr32(unsigned char* view, Address value, Overflow_check overflow)
1429 { return This::template rela<32>(view, value, overflow); }
1431 // R_POWERPC_UADDR32: (Symbol + Addend) unaligned
1432 static inline Status
1433 addr32_u(unsigned char* view, Address value, Overflow_check overflow)
1434 { return This::template rela_ua<32>(view, value, overflow); }
1436 // R_POWERPC_ADDR24: (Symbol + Addend) & 0x3fffffc
1437 static inline Status
1438 addr24(unsigned char* view, Address value, Overflow_check overflow)
1440 Status stat = This::template rela<32>(view, 0, 0x03fffffc, value, overflow);
1441 if (overflow != CHECK_NONE && (value & 3) != 0)
1442 stat = STATUS_OVERFLOW;
1446 // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff
1447 static inline Status
1448 addr16(unsigned char* view, Address value, Overflow_check overflow)
1449 { return This::template rela<16>(view, value, overflow); }
1451 // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff, unaligned
1452 static inline Status
1453 addr16_u(unsigned char* view, Address value, Overflow_check overflow)
1454 { return This::template rela_ua<16>(view, value, overflow); }
1456 // R_POWERPC_ADDR16_DS: (Symbol + Addend) & 0xfffc
1457 static inline Status
1458 addr16_ds(unsigned char* view, Address value, Overflow_check overflow)
1460 Status stat = This::template rela<16>(view, 0, 0xfffc, value, overflow);
1461 if (overflow != CHECK_NONE && (value & 3) != 0)
1462 stat = STATUS_OVERFLOW;
1466 // R_POWERPC_ADDR16_HI: ((Symbol + Addend) >> 16) & 0xffff
1468 addr16_hi(unsigned char* view, Address value)
1469 { This::template rela<16>(view, 16, 0xffff, value, CHECK_NONE); }
1471 // R_POWERPC_ADDR16_HA: ((Symbol + Addend + 0x8000) >> 16) & 0xffff
1473 addr16_ha(unsigned char* view, Address value)
1474 { This::addr16_hi(view, value + 0x8000); }
1476 // R_POWERPC_ADDR16_HIGHER: ((Symbol + Addend) >> 32) & 0xffff
1478 addr16_hi2(unsigned char* view, Address value)
1479 { This::template rela<16>(view, 32, 0xffff, value, CHECK_NONE); }
1481 // R_POWERPC_ADDR16_HIGHERA: ((Symbol + Addend + 0x8000) >> 32) & 0xffff
1483 addr16_ha2(unsigned char* view, Address value)
1484 { This::addr16_hi2(view, value + 0x8000); }
1486 // R_POWERPC_ADDR16_HIGHEST: ((Symbol + Addend) >> 48) & 0xffff
1488 addr16_hi3(unsigned char* view, Address value)
1489 { This::template rela<16>(view, 48, 0xffff, value, CHECK_NONE); }
1491 // R_POWERPC_ADDR16_HIGHESTA: ((Symbol + Addend + 0x8000) >> 48) & 0xffff
1493 addr16_ha3(unsigned char* view, Address value)
1494 { This::addr16_hi3(view, value + 0x8000); }
1496 // R_POWERPC_ADDR14: (Symbol + Addend) & 0xfffc
1497 static inline Status
1498 addr14(unsigned char* view, Address value, Overflow_check overflow)
1500 Status stat = This::template rela<32>(view, 0, 0xfffc, value, overflow);
1501 if (overflow != CHECK_NONE && (value & 3) != 0)
1502 stat = STATUS_OVERFLOW;
1507 // Stash away the index of .got2 or .opd in a relocatable object, if
1508 // such a section exists.
1510 template<int size, bool big_endian>
1512 Powerpc_relobj<size, big_endian>::do_find_special_sections(
1513 Read_symbols_data* sd)
1515 const unsigned char* const pshdrs = sd->section_headers->data();
1516 const unsigned char* namesu = sd->section_names->data();
1517 const char* names = reinterpret_cast<const char*>(namesu);
1518 section_size_type names_size = sd->section_names_size;
1519 const unsigned char* s;
1521 s = this->find_shdr(pshdrs, size == 32 ? ".got2" : ".opd",
1522 names, names_size, NULL);
1525 unsigned int ndx = (s - pshdrs) / elfcpp::Elf_sizes<size>::shdr_size;
1526 this->special_ = ndx;
1528 return Sized_relobj_file<size, big_endian>::do_find_special_sections(sd);
1531 // Examine .rela.opd to build info about function entry points.
1533 template<int size, bool big_endian>
1535 Powerpc_relobj<size, big_endian>::scan_opd_relocs(
1537 const unsigned char* prelocs,
1538 const unsigned char* plocal_syms)
1542 typedef typename Reloc_types<elfcpp::SHT_RELA, size, big_endian>::Reloc
1544 const int reloc_size
1545 = Reloc_types<elfcpp::SHT_RELA, size, big_endian>::reloc_size;
1546 const int sym_size = elfcpp::Elf_sizes<size>::sym_size;
1547 Address expected_off = 0;
1548 bool regular = true;
1549 unsigned int opd_ent_size = 0;
1551 for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size)
1553 Reltype reloc(prelocs);
1554 typename elfcpp::Elf_types<size>::Elf_WXword r_info
1555 = reloc.get_r_info();
1556 unsigned int r_type = elfcpp::elf_r_type<size>(r_info);
1557 if (r_type == elfcpp::R_PPC64_ADDR64)
1559 unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info);
1560 typename elfcpp::Elf_types<size>::Elf_Addr value;
1563 if (r_sym < this->local_symbol_count())
1565 typename elfcpp::Sym<size, big_endian>
1566 lsym(plocal_syms + r_sym * sym_size);
1567 shndx = lsym.get_st_shndx();
1568 shndx = this->adjust_sym_shndx(r_sym, shndx, &is_ordinary);
1569 value = lsym.get_st_value();
1572 shndx = this->symbol_section_and_value(r_sym, &value,
1574 this->set_opd_ent(reloc.get_r_offset(), shndx,
1575 value + reloc.get_r_addend());
1578 expected_off = reloc.get_r_offset();
1579 opd_ent_size = expected_off;
1581 else if (expected_off != reloc.get_r_offset())
1583 expected_off += opd_ent_size;
1585 else if (r_type == elfcpp::R_PPC64_TOC)
1587 if (expected_off - opd_ent_size + 8 != reloc.get_r_offset())
1592 gold_warning(_("%s: unexpected reloc type %u in .opd section"),
1593 this->name().c_str(), r_type);
1597 if (reloc_count <= 2)
1598 opd_ent_size = this->section_size(this->opd_shndx());
1599 if (opd_ent_size != 24 && opd_ent_size != 16)
1603 gold_warning(_("%s: .opd is not a regular array of opd entries"),
1604 this->name().c_str());
1610 template<int size, bool big_endian>
1612 Powerpc_relobj<size, big_endian>::do_read_relocs(Read_relocs_data* rd)
1614 Sized_relobj_file<size, big_endian>::do_read_relocs(rd);
1617 for (Read_relocs_data::Relocs_list::iterator p = rd->relocs.begin();
1618 p != rd->relocs.end();
1621 if (p->data_shndx == this->opd_shndx())
1623 uint64_t opd_size = this->section_size(this->opd_shndx());
1624 gold_assert(opd_size == static_cast<size_t>(opd_size));
1627 this->init_opd(opd_size);
1628 this->scan_opd_relocs(p->reloc_count, p->contents->data(),
1629 rd->local_symbols->data());
1637 // Set up some symbols.
1639 template<int size, bool big_endian>
1641 Target_powerpc<size, big_endian>::do_define_standard_symbols(
1642 Symbol_table* symtab,
1647 // Define _GLOBAL_OFFSET_TABLE_ to ensure it isn't seen as
1648 // undefined when scanning relocs (and thus requires
1649 // non-relative dynamic relocs). The proper value will be
1651 Symbol *gotsym = symtab->lookup("_GLOBAL_OFFSET_TABLE_", NULL);
1652 if (gotsym != NULL && gotsym->is_undefined())
1654 Target_powerpc<size, big_endian>* target =
1655 static_cast<Target_powerpc<size, big_endian>*>(
1656 parameters->sized_target<size, big_endian>());
1657 Output_data_got_powerpc<size, big_endian>* got
1658 = target->got_section(symtab, layout);
1659 symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL,
1660 Symbol_table::PREDEFINED,
1664 elfcpp::STV_HIDDEN, 0,
1668 // Define _SDA_BASE_ at the start of the .sdata section + 32768.
1669 Symbol *sdasym = symtab->lookup("_SDA_BASE_", NULL);
1670 if (sdasym != NULL && sdasym->is_undefined())
1672 Output_data_space* sdata = new Output_data_space(4, "** sdata");
1674 = layout->add_output_section_data(".sdata", 0,
1676 | elfcpp::SHF_WRITE,
1677 sdata, ORDER_SMALL_DATA, false);
1678 symtab->define_in_output_data("_SDA_BASE_", NULL,
1679 Symbol_table::PREDEFINED,
1680 os, 32768, 0, elfcpp::STT_OBJECT,
1681 elfcpp::STB_LOCAL, elfcpp::STV_HIDDEN,
1687 // Set up PowerPC target specific relobj.
1689 template<int size, bool big_endian>
1691 Target_powerpc<size, big_endian>::do_make_elf_object(
1692 const std::string& name,
1693 Input_file* input_file,
1694 off_t offset, const elfcpp::Ehdr<size, big_endian>& ehdr)
1696 int et = ehdr.get_e_type();
1697 // ET_EXEC files are valid input for --just-symbols/-R,
1698 // and we treat them as relocatable objects.
1699 if (et == elfcpp::ET_REL
1700 || (et == elfcpp::ET_EXEC && input_file->just_symbols()))
1702 Powerpc_relobj<size, big_endian>* obj =
1703 new Powerpc_relobj<size, big_endian>(name, input_file, offset, ehdr);
1707 else if (et == elfcpp::ET_DYN)
1709 Sized_dynobj<size, big_endian>* obj =
1710 new Sized_dynobj<size, big_endian>(name, input_file, offset, ehdr);
1716 gold_error(_("%s: unsupported ELF file type %d"), name.c_str(), et);
1721 template<int size, bool big_endian>
1722 class Output_data_got_powerpc : public Output_data_got<size, big_endian>
1725 typedef typename elfcpp::Elf_types<size>::Elf_Addr Valtype;
1726 typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Rela_dyn;
1728 Output_data_got_powerpc(Symbol_table* symtab, Layout* layout)
1729 : Output_data_got<size, big_endian>(),
1730 symtab_(symtab), layout_(layout),
1731 header_ent_cnt_(size == 32 ? 3 : 1),
1732 header_index_(size == 32 ? 0x2000 : 0)
1737 // Create a new GOT entry and return its offset.
1739 add_got_entry(Got_entry got_entry)
1741 this->reserve_ent();
1742 return Output_data_got<size, big_endian>::add_got_entry(got_entry);
1745 // Create a pair of new GOT entries and return the offset of the first.
1747 add_got_entry_pair(Got_entry got_entry_1, Got_entry got_entry_2)
1749 this->reserve_ent(2);
1750 return Output_data_got<size, big_endian>::add_got_entry_pair(got_entry_1,
1755 add_constant_pair(Valtype c1, Valtype c2)
1757 this->reserve_ent(2);
1758 unsigned int got_offset = this->add_constant(c1);
1759 this->add_constant(c2);
1763 // Offset of _GLOBAL_OFFSET_TABLE_.
1767 return this->got_offset(this->header_index_);
1770 // Offset of base used to access the GOT/TOC.
1771 // The got/toc pointer reg will be set to this value.
1773 got_base_offset(const Powerpc_relobj<size, big_endian>* object) const
1776 return this->g_o_t();
1778 return (this->output_section()->address()
1779 + object->toc_base_offset()
1783 // Ensure our GOT has a header.
1785 set_final_data_size()
1787 if (this->header_ent_cnt_ != 0)
1788 this->make_header();
1789 Output_data_got<size, big_endian>::set_final_data_size();
1792 // First word of GOT header needs some values that are not
1793 // handled by Output_data_got so poke them in here.
1794 // For 32-bit, address of .dynamic, for 64-bit, address of TOCbase.
1796 do_write(Output_file* of)
1799 if (size == 32 && this->layout_->dynamic_data() != NULL)
1800 val = this->layout_->dynamic_section()->address();
1802 val = this->output_section()->address() + 0x8000;
1803 this->replace_constant(this->header_index_, val);
1804 Output_data_got<size, big_endian>::do_write(of);
1809 reserve_ent(unsigned int cnt = 1)
1811 if (this->header_ent_cnt_ == 0)
1813 if (this->num_entries() + cnt > this->header_index_)
1814 this->make_header();
1820 this->header_ent_cnt_ = 0;
1821 this->header_index_ = this->num_entries();
1824 Output_data_got<size, big_endian>::add_constant(0);
1825 Output_data_got<size, big_endian>::add_constant(0);
1826 Output_data_got<size, big_endian>::add_constant(0);
1828 // Define _GLOBAL_OFFSET_TABLE_ at the header
1829 Symbol *gotsym = this->symtab_->lookup("_GLOBAL_OFFSET_TABLE_", NULL);
1832 Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(gotsym);
1833 sym->set_value(this->g_o_t());
1836 this->symtab_->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL,
1837 Symbol_table::PREDEFINED,
1838 this, this->g_o_t(), 0,
1841 elfcpp::STV_HIDDEN, 0,
1845 Output_data_got<size, big_endian>::add_constant(0);
1848 // Stashed pointers.
1849 Symbol_table* symtab_;
1853 unsigned int header_ent_cnt_;
1854 // GOT header index.
1855 unsigned int header_index_;
1858 // Get the GOT section, creating it if necessary.
1860 template<int size, bool big_endian>
1861 Output_data_got_powerpc<size, big_endian>*
1862 Target_powerpc<size, big_endian>::got_section(Symbol_table* symtab,
1865 if (this->got_ == NULL)
1867 gold_assert(symtab != NULL && layout != NULL);
1870 = new Output_data_got_powerpc<size, big_endian>(symtab, layout);
1872 layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS,
1873 elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE,
1874 this->got_, ORDER_DATA, false);
1880 // Get the dynamic reloc section, creating it if necessary.
1882 template<int size, bool big_endian>
1883 typename Target_powerpc<size, big_endian>::Reloc_section*
1884 Target_powerpc<size, big_endian>::rela_dyn_section(Layout* layout)
1886 if (this->rela_dyn_ == NULL)
1888 gold_assert(layout != NULL);
1889 this->rela_dyn_ = new Reloc_section(parameters->options().combreloc());
1890 layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA,
1891 elfcpp::SHF_ALLOC, this->rela_dyn_,
1892 ORDER_DYNAMIC_RELOCS, false);
1894 return this->rela_dyn_;
1900 // Determine the stub group size. The group size is the absolute
1901 // value of the parameter --stub-group-size. If --stub-group-size
1902 // is passed a negative value, we restrict stubs to be always before
1903 // the stubbed branches.
1904 Stub_control(int32_t size)
1905 : state_(NO_GROUP), stub_group_size_(abs(size)),
1906 stub14_group_size_(abs(size)),
1907 stubs_always_before_branch_(size < 0), suppress_size_errors_(false),
1908 group_end_addr_(0), owner_(NULL), output_section_(NULL)
1910 if (stub_group_size_ == 1)
1913 if (stubs_always_before_branch_)
1915 stub_group_size_ = 0x1e00000;
1916 stub14_group_size_ = 0x7800;
1920 stub_group_size_ = 0x1c00000;
1921 stub14_group_size_ = 0x7000;
1923 suppress_size_errors_ = true;
1927 // Return true iff input section can be handled by current stub
1930 can_add_to_stub_group(Output_section* o,
1931 const Output_section::Input_section* i,
1934 const Output_section::Input_section*
1940 { return output_section_; }
1946 FINDING_STUB_SECTION,
1951 uint32_t stub_group_size_;
1952 uint32_t stub14_group_size_;
1953 bool stubs_always_before_branch_;
1954 bool suppress_size_errors_;
1955 uint64_t group_end_addr_;
1956 const Output_section::Input_section* owner_;
1957 Output_section* output_section_;
1960 // Return true iff input section can be handled by current stub/
1964 Stub_control::can_add_to_stub_group(Output_section* o,
1965 const Output_section::Input_section* i,
1969 = has14 ? this->stub14_group_size_ : this->stub_group_size_;
1970 bool whole_sec = o->order() == ORDER_INIT || o->order() == ORDER_FINI;
1972 uint64_t start_addr = o->address();
1975 // .init and .fini sections are pasted together to form a single
1976 // function. We can't be adding stubs in the middle of the function.
1977 this_size = o->data_size();
1980 start_addr += i->relobj()->output_section_offset(i->shndx());
1981 this_size = i->data_size();
1983 uint64_t end_addr = start_addr + this_size;
1984 bool toobig = this_size > group_size;
1986 if (toobig && !this->suppress_size_errors_)
1987 gold_warning(_("%s:%s exceeds group size"),
1988 i->relobj()->name().c_str(),
1989 i->relobj()->section_name(i->shndx()).c_str());
1991 if (this->state_ != HAS_STUB_SECTION
1992 && (!whole_sec || this->output_section_ != o))
1995 this->output_section_ = o;
1998 if (this->state_ == NO_GROUP)
2000 this->state_ = FINDING_STUB_SECTION;
2001 this->group_end_addr_ = end_addr;
2003 else if (this->group_end_addr_ - start_addr < group_size)
2005 // Adding this section would make the group larger than GROUP_SIZE.
2006 else if (this->state_ == FINDING_STUB_SECTION
2007 && !this->stubs_always_before_branch_
2010 // But wait, there's more! Input sections up to GROUP_SIZE
2011 // bytes before the stub table can be handled by it too.
2012 this->state_ = HAS_STUB_SECTION;
2013 this->group_end_addr_ = end_addr;
2017 this->state_ = NO_GROUP;
2023 // Look over all the input sections, deciding where to place stubs.
2025 template<int size, bool big_endian>
2027 Target_powerpc<size, big_endian>::group_sections(Layout* layout,
2030 Stub_control stub_control(parameters->options().stub_group_size());
2032 // Group input sections and insert stub table
2033 Stub_table<size, big_endian>* stub_table = NULL;
2034 Layout::Section_list section_list;
2035 layout->get_executable_sections(§ion_list);
2036 std::stable_sort(section_list.begin(), section_list.end(), Sort_sections());
2037 for (Layout::Section_list::reverse_iterator o = section_list.rbegin();
2038 o != section_list.rend();
2041 typedef Output_section::Input_section_list Input_section_list;
2042 for (Input_section_list::const_reverse_iterator i
2043 = (*o)->input_sections().rbegin();
2044 i != (*o)->input_sections().rend();
2047 if (i->is_input_section())
2049 Powerpc_relobj<size, big_endian>* ppcobj = static_cast
2050 <Powerpc_relobj<size, big_endian>*>(i->relobj());
2051 bool has14 = ppcobj->has_14bit_branch(i->shndx());
2052 if (!stub_control.can_add_to_stub_group(*o, &*i, has14))
2054 stub_table->init(stub_control.owner(),
2055 stub_control.output_section());
2058 if (stub_table == NULL)
2059 stub_table = this->new_stub_table();
2060 ppcobj->set_stub_table(i->shndx(), stub_table);
2064 if (stub_table != NULL)
2065 stub_table->init(stub_control.owner(), stub_control.output_section());
2068 // If this branch needs a plt call stub, or a long branch stub, make one.
2070 template<int size, bool big_endian>
2072 Target_powerpc<size, big_endian>::Branch_info::make_stub(
2073 Stub_table<size, big_endian>* stub_table,
2074 Stub_table<size, big_endian>* ifunc_stub_table,
2075 Symbol_table* symtab) const
2077 Symbol* sym = this->object_->global_symbol(this->r_sym_);
2078 if (sym != NULL && sym->is_forwarder())
2079 sym = symtab->resolve_forwards(sym);
2080 const Sized_symbol<size>* gsym = static_cast<const Sized_symbol<size>*>(sym);
2082 ? use_plt_offset<size>(gsym, Scan::get_reference_flags(this->r_type_))
2083 : this->object_->local_has_plt_offset(this->r_sym_))
2085 if (stub_table == NULL)
2086 stub_table = this->object_->stub_table(this->shndx_);
2087 if (stub_table == NULL)
2089 // This is a ref from a data section to an ifunc symbol.
2090 stub_table = ifunc_stub_table;
2092 gold_assert(stub_table != NULL);
2094 stub_table->add_plt_call_entry(this->object_, gsym,
2095 this->r_type_, this->addend_);
2097 stub_table->add_plt_call_entry(this->object_, this->r_sym_,
2098 this->r_type_, this->addend_);
2102 unsigned int max_branch_offset;
2103 if (this->r_type_ == elfcpp::R_POWERPC_REL14
2104 || this->r_type_ == elfcpp::R_POWERPC_REL14_BRTAKEN
2105 || this->r_type_ == elfcpp::R_POWERPC_REL14_BRNTAKEN)
2106 max_branch_offset = 1 << 15;
2107 else if (this->r_type_ == elfcpp::R_POWERPC_REL24
2108 || this->r_type_ == elfcpp::R_PPC_PLTREL24
2109 || this->r_type_ == elfcpp::R_PPC_LOCAL24PC)
2110 max_branch_offset = 1 << 25;
2113 Address from = this->object_->get_output_section_offset(this->shndx_);
2114 gold_assert(from != invalid_address);
2115 from += (this->object_->output_section(this->shndx_)->address()
2120 switch (gsym->source())
2122 case Symbol::FROM_OBJECT:
2124 Object* symobj = gsym->object();
2125 if (symobj->is_dynamic()
2126 || symobj->pluginobj() != NULL)
2129 unsigned int shndx = gsym->shndx(&is_ordinary);
2130 if (shndx == elfcpp::SHN_UNDEF)
2135 case Symbol::IS_UNDEFINED:
2141 Symbol_table::Compute_final_value_status status;
2142 to = symtab->compute_final_value<size>(gsym, &status);
2143 if (status != Symbol_table::CFVS_OK)
2148 const Symbol_value<size>* psymval
2149 = this->object_->local_symbol(this->r_sym_);
2150 Symbol_value<size> symval;
2151 typedef Sized_relobj_file<size, big_endian> ObjType;
2152 typename ObjType::Compute_final_local_value_status status
2153 = this->object_->compute_final_local_value(this->r_sym_, psymval,
2155 if (status != ObjType::CFLV_OK
2156 || !symval.has_output_value())
2158 to = symval.value(this->object_, 0);
2160 to += this->addend_;
2161 if (stub_table == NULL)
2162 stub_table = this->object_->stub_table(this->shndx_);
2163 gold_assert(stub_table != NULL);
2164 if (size == 64 && is_branch_reloc(this->r_type_))
2166 unsigned int dest_shndx;
2167 to = stub_table->targ()->symval_for_branch(symtab, to, gsym,
2171 Address delta = to - from;
2172 if (delta + max_branch_offset >= 2 * max_branch_offset)
2174 stub_table->add_long_branch_entry(this->object_, to);
2179 // Relaxation hook. This is where we do stub generation.
2181 template<int size, bool big_endian>
2183 Target_powerpc<size, big_endian>::do_relax(int pass,
2184 const Input_objects*,
2185 Symbol_table* symtab,
2189 unsigned int prev_brlt_size = 0;
2192 bool thread_safe = parameters->options().plt_thread_safe();
2193 if (size == 64 && !parameters->options().user_set_plt_thread_safe())
2195 static const char* const thread_starter[] =
2199 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
2201 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
2202 "mq_notify", "create_timer",
2206 "GOMP_parallel_start",
2207 "GOMP_parallel_loop_static_start",
2208 "GOMP_parallel_loop_dynamic_start",
2209 "GOMP_parallel_loop_guided_start",
2210 "GOMP_parallel_loop_runtime_start",
2211 "GOMP_parallel_sections_start",
2214 if (parameters->options().shared())
2218 for (unsigned int i = 0;
2219 i < sizeof(thread_starter) / sizeof(thread_starter[0]);
2222 Symbol* sym = symtab->lookup(thread_starter[i], NULL);
2223 thread_safe = (sym != NULL
2225 && sym->in_real_elf());
2231 this->plt_thread_safe_ = thread_safe;
2232 this->group_sections(layout, task);
2235 // We need address of stub tables valid for make_stub.
2236 for (typename Stub_tables::iterator p = this->stub_tables_.begin();
2237 p != this->stub_tables_.end();
2240 const Powerpc_relobj<size, big_endian>* object
2241 = static_cast<const Powerpc_relobj<size, big_endian>*>((*p)->relobj());
2242 Address off = object->get_output_section_offset((*p)->shndx());
2243 gold_assert(off != invalid_address);
2244 Output_section* os = (*p)->output_section();
2245 (*p)->set_address_and_size(os, off);
2250 // Clear plt call stubs, long branch stubs and branch lookup table.
2251 prev_brlt_size = this->branch_lookup_table_.size();
2252 this->branch_lookup_table_.clear();
2253 for (typename Stub_tables::iterator p = this->stub_tables_.begin();
2254 p != this->stub_tables_.end();
2257 (*p)->clear_stubs();
2261 // Build all the stubs.
2262 Stub_table<size, big_endian>* ifunc_stub_table
2263 = this->stub_tables_.size() == 0 ? NULL : this->stub_tables_[0];
2264 Stub_table<size, big_endian>* one_stub_table
2265 = this->stub_tables_.size() != 1 ? NULL : ifunc_stub_table;
2266 for (typename Branches::const_iterator b = this->branch_info_.begin();
2267 b != this->branch_info_.end();
2270 b->make_stub(one_stub_table, ifunc_stub_table, symtab);
2273 // Did anything change size?
2274 unsigned int num_huge_branches = this->branch_lookup_table_.size();
2275 bool again = num_huge_branches != prev_brlt_size;
2276 if (size == 64 && num_huge_branches != 0)
2277 this->make_brlt_section(layout);
2278 if (size == 64 && again)
2279 this->brlt_section_->set_current_size(num_huge_branches);
2281 typedef Unordered_set<Output_section*> Output_sections;
2282 Output_sections os_need_update;
2283 for (typename Stub_tables::iterator p = this->stub_tables_.begin();
2284 p != this->stub_tables_.end();
2287 if ((*p)->size_update())
2290 (*p)->add_eh_frame(layout);
2291 os_need_update.insert((*p)->output_section());
2295 // Set output section offsets for all input sections in an output
2296 // section that just changed size. Anything past the stubs will
2298 for (typename Output_sections::iterator p = os_need_update.begin();
2299 p != os_need_update.end();
2302 Output_section* os = *p;
2304 typedef Output_section::Input_section_list Input_section_list;
2305 for (Input_section_list::const_iterator i = os->input_sections().begin();
2306 i != os->input_sections().end();
2309 off = align_address(off, i->addralign());
2310 if (i->is_input_section() || i->is_relaxed_input_section())
2311 i->relobj()->set_section_offset(i->shndx(), off);
2312 if (i->is_relaxed_input_section())
2314 Stub_table<size, big_endian>* stub_table
2315 = static_cast<Stub_table<size, big_endian>*>(
2316 i->relaxed_input_section());
2317 off += stub_table->set_address_and_size(os, off);
2320 off += i->data_size();
2322 // If .brlt is part of this output section, then we have just
2323 // done the offset adjustment.
2324 os->clear_section_offsets_need_adjustment();
2329 && num_huge_branches != 0
2330 && parameters->options().output_is_position_independent())
2332 // Fill in the BRLT relocs.
2333 this->brlt_section_->reset_data_size();
2334 for (typename Branch_lookup_table::const_iterator p
2335 = this->branch_lookup_table_.begin();
2336 p != this->branch_lookup_table_.end();
2339 this->brlt_section_->add_reloc(p->first, p->second);
2341 this->brlt_section_->finalize_data_size();
2346 template<int size, bool big_endian>
2348 Target_powerpc<size, big_endian>::do_plt_fde_location(const Output_data* plt,
2349 unsigned char* oview,
2353 uint64_t address = plt->address();
2354 off_t len = plt->data_size();
2356 if (plt == this->glink_)
2358 // See Output_data_glink::do_write() for glink contents.
2361 // There is one word before __glink_PLTresolve
2365 else if (parameters->options().output_is_position_independent())
2367 // There are two FDEs for a position independent glink.
2368 // The first covers the branch table, the second
2369 // __glink_PLTresolve at the end of glink.
2370 off_t resolve_size = this->glink_->pltresolve_size;
2372 len -= resolve_size;
2375 address += len - resolve_size;
2382 // Must be a stub table.
2383 const Stub_table<size, big_endian>* stub_table
2384 = static_cast<const Stub_table<size, big_endian>*>(plt);
2385 uint64_t stub_address = stub_table->stub_address();
2386 len -= stub_address - address;
2387 address = stub_address;
2390 *paddress = address;
2394 // A class to handle the PLT data.
2396 template<int size, bool big_endian>
2397 class Output_data_plt_powerpc : public Output_section_data_build
2400 typedef Output_data_reloc<elfcpp::SHT_RELA, true,
2401 size, big_endian> Reloc_section;
2403 Output_data_plt_powerpc(Target_powerpc<size, big_endian>* targ,
2404 Reloc_section* plt_rel,
2405 unsigned int reserved_size,
2407 : Output_section_data_build(size == 32 ? 4 : 8),
2410 initial_plt_entry_size_(reserved_size),
2414 // Add an entry to the PLT.
2419 add_ifunc_entry(Symbol*);
2422 add_local_ifunc_entry(Sized_relobj_file<size, big_endian>*, unsigned int);
2424 // Return the .rela.plt section data.
2431 // Return the number of PLT entries.
2435 return ((this->current_data_size() - this->initial_plt_entry_size_)
2439 // Return the offset of the first non-reserved PLT entry.
2441 first_plt_entry_offset()
2442 { return this->initial_plt_entry_size_; }
2444 // Return the size of a PLT entry.
2446 get_plt_entry_size()
2447 { return plt_entry_size; }
2451 do_adjust_output_section(Output_section* os)
2456 // Write to a map file.
2458 do_print_to_mapfile(Mapfile* mapfile) const
2459 { mapfile->print_output_data(this, this->name_); }
2462 // The size of an entry in the PLT.
2463 static const int plt_entry_size = size == 32 ? 4 : 24;
2465 // Write out the PLT data.
2467 do_write(Output_file*);
2469 // The reloc section.
2470 Reloc_section* rel_;
2471 // Allows access to .glink for do_write.
2472 Target_powerpc<size, big_endian>* targ_;
2473 // The size of the first reserved entry.
2474 int initial_plt_entry_size_;
2475 // What to report in map file.
2479 // Add an entry to the PLT.
2481 template<int size, bool big_endian>
2483 Output_data_plt_powerpc<size, big_endian>::add_entry(Symbol* gsym)
2485 if (!gsym->has_plt_offset())
2487 section_size_type off = this->current_data_size();
2489 off += this->first_plt_entry_offset();
2490 gsym->set_plt_offset(off);
2491 gsym->set_needs_dynsym_entry();
2492 unsigned int dynrel = elfcpp::R_POWERPC_JMP_SLOT;
2493 this->rel_->add_global(gsym, dynrel, this, off, 0);
2494 off += plt_entry_size;
2495 this->set_current_data_size(off);
2499 // Add an entry for a global ifunc symbol that resolves locally, to the IPLT.
2501 template<int size, bool big_endian>
2503 Output_data_plt_powerpc<size, big_endian>::add_ifunc_entry(Symbol* gsym)
2505 if (!gsym->has_plt_offset())
2507 section_size_type off = this->current_data_size();
2508 gsym->set_plt_offset(off);
2509 unsigned int dynrel = elfcpp::R_POWERPC_IRELATIVE;
2511 dynrel = elfcpp::R_PPC64_JMP_IREL;
2512 this->rel_->add_symbolless_global_addend(gsym, dynrel, this, off, 0);
2513 off += plt_entry_size;
2514 this->set_current_data_size(off);
2518 // Add an entry for a local ifunc symbol to the IPLT.
2520 template<int size, bool big_endian>
2522 Output_data_plt_powerpc<size, big_endian>::add_local_ifunc_entry(
2523 Sized_relobj_file<size, big_endian>* relobj,
2524 unsigned int local_sym_index)
2526 if (!relobj->local_has_plt_offset(local_sym_index))
2528 section_size_type off = this->current_data_size();
2529 relobj->set_local_plt_offset(local_sym_index, off);
2530 unsigned int dynrel = elfcpp::R_POWERPC_IRELATIVE;
2532 dynrel = elfcpp::R_PPC64_JMP_IREL;
2533 this->rel_->add_symbolless_local_addend(relobj, local_sym_index, dynrel,
2535 off += plt_entry_size;
2536 this->set_current_data_size(off);
2540 static const uint32_t add_0_11_11 = 0x7c0b5a14;
2541 static const uint32_t add_2_2_11 = 0x7c425a14;
2542 static const uint32_t add_3_3_2 = 0x7c631214;
2543 static const uint32_t add_3_3_13 = 0x7c636a14;
2544 static const uint32_t add_11_0_11 = 0x7d605a14;
2545 static const uint32_t add_12_2_11 = 0x7d825a14;
2546 static const uint32_t add_12_12_11 = 0x7d8c5a14;
2547 static const uint32_t addi_11_11 = 0x396b0000;
2548 static const uint32_t addi_12_12 = 0x398c0000;
2549 static const uint32_t addi_2_2 = 0x38420000;
2550 static const uint32_t addi_3_2 = 0x38620000;
2551 static const uint32_t addi_3_3 = 0x38630000;
2552 static const uint32_t addis_0_2 = 0x3c020000;
2553 static const uint32_t addis_0_13 = 0x3c0d0000;
2554 static const uint32_t addis_11_11 = 0x3d6b0000;
2555 static const uint32_t addis_11_30 = 0x3d7e0000;
2556 static const uint32_t addis_12_12 = 0x3d8c0000;
2557 static const uint32_t addis_12_2 = 0x3d820000;
2558 static const uint32_t addis_3_2 = 0x3c620000;
2559 static const uint32_t addis_3_13 = 0x3c6d0000;
2560 static const uint32_t b = 0x48000000;
2561 static const uint32_t bcl_20_31 = 0x429f0005;
2562 static const uint32_t bctr = 0x4e800420;
2563 static const uint32_t blr = 0x4e800020;
2564 static const uint32_t blrl = 0x4e800021;
2565 static const uint32_t bnectr_p4 = 0x4ce20420;
2566 static const uint32_t cmpldi_2_0 = 0x28220000;
2567 static const uint32_t cror_15_15_15 = 0x4def7b82;
2568 static const uint32_t cror_31_31_31 = 0x4ffffb82;
2569 static const uint32_t ld_0_1 = 0xe8010000;
2570 static const uint32_t ld_0_12 = 0xe80c0000;
2571 static const uint32_t ld_11_12 = 0xe96c0000;
2572 static const uint32_t ld_11_2 = 0xe9620000;
2573 static const uint32_t ld_2_1 = 0xe8410000;
2574 static const uint32_t ld_2_11 = 0xe84b0000;
2575 static const uint32_t ld_2_12 = 0xe84c0000;
2576 static const uint32_t ld_2_2 = 0xe8420000;
2577 static const uint32_t lfd_0_1 = 0xc8010000;
2578 static const uint32_t li_0_0 = 0x38000000;
2579 static const uint32_t li_12_0 = 0x39800000;
2580 static const uint32_t lis_0_0 = 0x3c000000;
2581 static const uint32_t lis_11 = 0x3d600000;
2582 static const uint32_t lis_12 = 0x3d800000;
2583 static const uint32_t lwz_0_12 = 0x800c0000;
2584 static const uint32_t lwz_11_11 = 0x816b0000;
2585 static const uint32_t lwz_11_30 = 0x817e0000;
2586 static const uint32_t lwz_12_12 = 0x818c0000;
2587 static const uint32_t lwzu_0_12 = 0x840c0000;
2588 static const uint32_t lvx_0_12_0 = 0x7c0c00ce;
2589 static const uint32_t mflr_0 = 0x7c0802a6;
2590 static const uint32_t mflr_11 = 0x7d6802a6;
2591 static const uint32_t mflr_12 = 0x7d8802a6;
2592 static const uint32_t mtctr_0 = 0x7c0903a6;
2593 static const uint32_t mtctr_11 = 0x7d6903a6;
2594 static const uint32_t mtctr_12 = 0x7d8903a6;
2595 static const uint32_t mtlr_0 = 0x7c0803a6;
2596 static const uint32_t mtlr_12 = 0x7d8803a6;
2597 static const uint32_t nop = 0x60000000;
2598 static const uint32_t ori_0_0_0 = 0x60000000;
2599 static const uint32_t std_0_1 = 0xf8010000;
2600 static const uint32_t std_0_12 = 0xf80c0000;
2601 static const uint32_t std_2_1 = 0xf8410000;
2602 static const uint32_t stfd_0_1 = 0xd8010000;
2603 static const uint32_t stvx_0_12_0 = 0x7c0c01ce;
2604 static const uint32_t sub_11_11_12 = 0x7d6c5850;
2605 static const uint32_t xor_11_11_11 = 0x7d6b5a78;
2607 // Write out the PLT.
2609 template<int size, bool big_endian>
2611 Output_data_plt_powerpc<size, big_endian>::do_write(Output_file* of)
2615 const section_size_type offset = this->offset();
2616 const section_size_type oview_size
2617 = convert_to_section_size_type(this->data_size());
2618 unsigned char* const oview = of->get_output_view(offset, oview_size);
2619 unsigned char* pov = oview;
2620 unsigned char* endpov = oview + oview_size;
2622 // The address of the .glink branch table
2623 const Output_data_glink<size, big_endian>* glink
2624 = this->targ_->glink_section();
2625 elfcpp::Elf_types<32>::Elf_Addr branch_tab = glink->address();
2627 while (pov < endpov)
2629 elfcpp::Swap<32, big_endian>::writeval(pov, branch_tab);
2634 of->write_output_view(offset, oview_size, oview);
2638 // Create the PLT section.
2640 template<int size, bool big_endian>
2642 Target_powerpc<size, big_endian>::make_plt_section(Symbol_table* symtab,
2645 if (this->plt_ == NULL)
2647 if (this->got_ == NULL)
2648 this->got_section(symtab, layout);
2650 if (this->glink_ == NULL)
2651 make_glink_section(layout);
2653 // Ensure that .rela.dyn always appears before .rela.plt This is
2654 // necessary due to how, on PowerPC and some other targets, .rela.dyn
2655 // needs to include .rela.plt in it's range.
2656 this->rela_dyn_section(layout);
2658 Reloc_section* plt_rel = new Reloc_section(false);
2659 layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA,
2660 elfcpp::SHF_ALLOC, plt_rel,
2661 ORDER_DYNAMIC_PLT_RELOCS, false);
2663 = new Output_data_plt_powerpc<size, big_endian>(this, plt_rel,
2664 size == 32 ? 0 : 24,
2666 layout->add_output_section_data(".plt",
2668 ? elfcpp::SHT_PROGBITS
2669 : elfcpp::SHT_NOBITS),
2670 elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE,
2679 // Create the IPLT section.
2681 template<int size, bool big_endian>
2683 Target_powerpc<size, big_endian>::make_iplt_section(Symbol_table* symtab,
2686 if (this->iplt_ == NULL)
2688 this->make_plt_section(symtab, layout);
2690 Reloc_section* iplt_rel = new Reloc_section(false);
2691 this->rela_dyn_->output_section()->add_output_section_data(iplt_rel);
2693 = new Output_data_plt_powerpc<size, big_endian>(this, iplt_rel,
2695 this->plt_->output_section()->add_output_section_data(this->iplt_);
2699 // A section for huge long branch addresses, similar to plt section.
2701 template<int size, bool big_endian>
2702 class Output_data_brlt_powerpc : public Output_section_data_build
2705 typedef typename elfcpp::Elf_types<size>::Elf_Addr Address;
2706 typedef Output_data_reloc<elfcpp::SHT_RELA, true,
2707 size, big_endian> Reloc_section;
2709 Output_data_brlt_powerpc(Target_powerpc<size, big_endian>* targ,
2710 Reloc_section* brlt_rel)
2711 : Output_section_data_build(size == 32 ? 4 : 8),
2716 // Add a reloc for an entry in the BRLT.
2718 add_reloc(Address to, unsigned int off)
2719 { this->rel_->add_relative(elfcpp::R_POWERPC_RELATIVE, this, off, to); }
2721 // Update section and reloc section size.
2723 set_current_size(unsigned int num_branches)
2725 this->reset_address_and_file_offset();
2726 this->set_current_data_size(num_branches * 16);
2727 this->finalize_data_size();
2728 Output_section* os = this->output_section();
2729 os->set_section_offsets_need_adjustment();
2730 if (this->rel_ != NULL)
2732 unsigned int reloc_size
2733 = Reloc_types<elfcpp::SHT_RELA, size, big_endian>::reloc_size;
2734 this->rel_->reset_address_and_file_offset();
2735 this->rel_->set_current_data_size(num_branches * reloc_size);
2736 this->rel_->finalize_data_size();
2737 Output_section* os = this->rel_->output_section();
2738 os->set_section_offsets_need_adjustment();
2744 do_adjust_output_section(Output_section* os)
2749 // Write to a map file.
2751 do_print_to_mapfile(Mapfile* mapfile) const
2752 { mapfile->print_output_data(this, "** BRLT"); }
2755 // Write out the BRLT data.
2757 do_write(Output_file*);
2759 // The reloc section.
2760 Reloc_section* rel_;
2761 Target_powerpc<size, big_endian>* targ_;
2764 // Make the branch lookup table section.
2766 template<int size, bool big_endian>
2768 Target_powerpc<size, big_endian>::make_brlt_section(Layout* layout)
2770 if (size == 64 && this->brlt_section_ == NULL)
2772 Reloc_section* brlt_rel = NULL;
2773 bool is_pic = parameters->options().output_is_position_independent();
2776 // When PIC we can't fill in .brlt (like .plt it can be a
2777 // bss style section) but must initialise at runtime via
2778 // dynamic relocats.
2779 this->rela_dyn_section(layout);
2780 brlt_rel = new Reloc_section(false);
2781 this->rela_dyn_->output_section()->add_output_section_data(brlt_rel);
2784 = new Output_data_brlt_powerpc<size, big_endian>(this, brlt_rel);
2785 if (this->plt_ && is_pic)
2786 this->plt_->output_section()
2787 ->add_output_section_data(this->brlt_section_);
2789 layout->add_output_section_data(".brlt",
2790 (is_pic ? elfcpp::SHT_NOBITS
2791 : elfcpp::SHT_PROGBITS),
2792 elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE,
2793 this->brlt_section_,
2794 (is_pic ? ORDER_SMALL_BSS
2795 : ORDER_SMALL_DATA),
2800 // Write out .brlt when non-PIC.
2802 template<int size, bool big_endian>
2804 Output_data_brlt_powerpc<size, big_endian>::do_write(Output_file* of)
2806 if (size == 64 && !parameters->options().output_is_position_independent())
2808 const section_size_type offset = this->offset();
2809 const section_size_type oview_size
2810 = convert_to_section_size_type(this->data_size());
2811 unsigned char* const oview = of->get_output_view(offset, oview_size);
2813 this->targ_->write_branch_lookup_table(oview);
2814 of->write_output_view(offset, oview_size, oview);
2818 static inline uint32_t
2824 static inline uint32_t
2830 static inline uint32_t
2833 return hi(a + 0x8000);
2839 static const unsigned char eh_frame_cie[12];
2843 const unsigned char Eh_cie<size>::eh_frame_cie[] =
2846 'z', 'R', 0, // Augmentation string.
2847 4, // Code alignment.
2848 0x80 - size / 8 , // Data alignment.
2850 1, // Augmentation size.
2851 (elfcpp::DW_EH_PE_pcrel
2852 | elfcpp::DW_EH_PE_sdata4), // FDE encoding.
2853 elfcpp::DW_CFA_def_cfa, 1, 0 // def_cfa: r1 offset 0.
2856 // Describe __glink_PLTresolve use of LR, 64-bit version.
2857 static const unsigned char glink_eh_frame_fde_64[] =
2859 0, 0, 0, 0, // Replaced with offset to .glink.
2860 0, 0, 0, 0, // Replaced with size of .glink.
2861 0, // Augmentation size.
2862 elfcpp::DW_CFA_advance_loc + 1,
2863 elfcpp::DW_CFA_register, 65, 12,
2864 elfcpp::DW_CFA_advance_loc + 4,
2865 elfcpp::DW_CFA_restore_extended, 65
2868 // Describe __glink_PLTresolve use of LR, 32-bit version.
2869 static const unsigned char glink_eh_frame_fde_32[] =
2871 0, 0, 0, 0, // Replaced with offset to .glink.
2872 0, 0, 0, 0, // Replaced with size of .glink.
2873 0, // Augmentation size.
2874 elfcpp::DW_CFA_advance_loc + 2,
2875 elfcpp::DW_CFA_register, 65, 0,
2876 elfcpp::DW_CFA_advance_loc + 4,
2877 elfcpp::DW_CFA_restore_extended, 65
2880 static const unsigned char default_fde[] =
2882 0, 0, 0, 0, // Replaced with offset to stubs.
2883 0, 0, 0, 0, // Replaced with size of stubs.
2884 0, // Augmentation size.
2885 elfcpp::DW_CFA_nop, // Pad.
2890 template<bool big_endian>
2892 write_insn(unsigned char* p, uint32_t v)
2894 elfcpp::Swap<32, big_endian>::writeval(p, v);
2897 // Stub_table holds information about plt and long branch stubs.
2898 // Stubs are built in an area following some input section determined
2899 // by group_sections(). This input section is converted to a relaxed
2900 // input section allowing it to be resized to accommodate the stubs
2902 template<int size, bool big_endian>
2903 class Stub_table : public Output_relaxed_input_section
2906 typedef typename elfcpp::Elf_types<size>::Elf_Addr Address;
2907 static const Address invalid_address = static_cast<Address>(0) - 1;
2909 Stub_table(Target_powerpc<size, big_endian>* targ)
2910 : Output_relaxed_input_section(NULL, 0, 0),
2911 targ_(targ), plt_call_stubs_(), long_branch_stubs_(),
2912 orig_data_size_(0), plt_size_(0), last_plt_size_(0),
2913 branch_size_(0), last_branch_size_(0), eh_frame_added_(false)
2916 // Delayed Output_relaxed_input_section init.
2918 init(const Output_section::Input_section*, Output_section*);
2920 // Add a plt call stub.
2922 add_plt_call_entry(const Sized_relobj_file<size, big_endian>*,
2928 add_plt_call_entry(const Sized_relobj_file<size, big_endian>*,
2933 // Find a given plt call stub.
2935 find_plt_call_entry(const Symbol*) const;
2938 find_plt_call_entry(const Sized_relobj_file<size, big_endian>*,
2939 unsigned int) const;
2942 find_plt_call_entry(const Sized_relobj_file<size, big_endian>*,
2948 find_plt_call_entry(const Sized_relobj_file<size, big_endian>*,
2953 // Add a long branch stub.
2955 add_long_branch_entry(const Powerpc_relobj<size, big_endian>*, Address);
2958 find_long_branch_entry(const Powerpc_relobj<size, big_endian>*,
2964 this->plt_call_stubs_.clear();
2965 this->plt_size_ = 0;
2966 this->long_branch_stubs_.clear();
2967 this->branch_size_ = 0;
2971 set_address_and_size(const Output_section* os, Address off)
2973 Address start_off = off;
2974 off += this->orig_data_size_;
2975 Address my_size = this->plt_size_ + this->branch_size_;
2977 off = align_address(off, this->stub_align());
2978 // Include original section size and alignment padding in size
2979 my_size += off - start_off;
2980 this->reset_address_and_file_offset();
2981 this->set_current_data_size(my_size);
2982 this->set_address_and_file_offset(os->address() + start_off,
2983 os->offset() + start_off);
2988 stub_address() const
2990 return align_address(this->address() + this->orig_data_size_,
2991 this->stub_align());
2997 return align_address(this->offset() + this->orig_data_size_,
2998 this->stub_align());
3003 { return this->plt_size_; }
3008 Output_section* os = this->output_section();
3009 if (os->addralign() < this->stub_align())
3011 os->set_addralign(this->stub_align());
3012 // FIXME: get rid of the insane checkpointing.
3013 // We can't increase alignment of the input section to which
3014 // stubs are attached; The input section may be .init which
3015 // is pasted together with other .init sections to form a
3016 // function. Aligning might insert zero padding resulting in
3017 // sigill. However we do need to increase alignment of the
3018 // output section so that the align_address() on offset in
3019 // set_address_and_size() adds the same padding as the
3020 // align_address() on address in stub_address().
3021 // What's more, we need this alignment for the layout done in
3022 // relaxation_loop_body() so that the output section starts at
3023 // a suitably aligned address.
3024 os->checkpoint_set_addralign(this->stub_align());
3026 if (this->last_plt_size_ != this->plt_size_
3027 || this->last_branch_size_ != this->branch_size_)
3029 this->last_plt_size_ = this->plt_size_;
3030 this->last_branch_size_ = this->branch_size_;
3036 // Add .eh_frame info for this stub section. Unlike other linker
3037 // generated .eh_frame this is added late in the link, because we
3038 // only want the .eh_frame info if this particular stub section is
3041 add_eh_frame(Layout* layout)
3043 if (!this->eh_frame_added_)
3045 if (!parameters->options().ld_generated_unwind_info())
3048 // Since we add stub .eh_frame info late, it must be placed
3049 // after all other linker generated .eh_frame info so that
3050 // merge mapping need not be updated for input sections.
3051 // There is no provision to use a different CIE to that used
3053 if (!this->targ_->has_glink())
3056 layout->add_eh_frame_for_plt(this,
3057 Eh_cie<size>::eh_frame_cie,
3058 sizeof (Eh_cie<size>::eh_frame_cie),
3060 sizeof (default_fde));
3061 this->eh_frame_added_ = true;
3065 Target_powerpc<size, big_endian>*
3071 class Plt_stub_ent_hash;
3072 typedef Unordered_map<Plt_stub_ent, unsigned int,
3073 Plt_stub_ent_hash> Plt_stub_entries;
3075 // Alignment of stub section.
3081 unsigned int min_align = 32;
3082 unsigned int user_align = 1 << parameters->options().plt_align();
3083 return std::max(user_align, min_align);
3086 // Return the plt offset for the given call stub.
3088 plt_off(typename Plt_stub_entries::const_iterator p, bool* is_iplt) const
3090 const Symbol* gsym = p->first.sym_;
3093 *is_iplt = (gsym->type() == elfcpp::STT_GNU_IFUNC
3094 && gsym->can_use_relative_reloc(false));
3095 return gsym->plt_offset();
3100 const Sized_relobj_file<size, big_endian>* relobj = p->first.object_;
3101 unsigned int local_sym_index = p->first.locsym_;
3102 return relobj->local_plt_offset(local_sym_index);
3106 // Size of a given plt call stub.
3108 plt_call_size(typename Plt_stub_entries::const_iterator p) const
3114 Address plt_addr = this->plt_off(p, &is_iplt);
3116 plt_addr += this->targ_->iplt_section()->address();
3118 plt_addr += this->targ_->plt_section()->address();
3119 Address got_addr = this->targ_->got_section()->output_section()->address();
3120 const Powerpc_relobj<size, big_endian>* ppcobj = static_cast
3121 <const Powerpc_relobj<size, big_endian>*>(p->first.object_);
3122 got_addr += ppcobj->toc_base_offset();
3123 Address off = plt_addr - got_addr;
3124 bool static_chain = parameters->options().plt_static_chain();
3125 bool thread_safe = this->targ_->plt_thread_safe();
3126 unsigned int bytes = (4 * 5
3129 + 4 * (ha(off) != 0)
3130 + 4 * (ha(off + 8 + 8 * static_chain) != ha(off)));
3131 unsigned int align = 1 << parameters->options().plt_align();
3133 bytes = (bytes + align - 1) & -align;
3137 // Return long branch stub size.
3139 branch_stub_size(Address to)
3142 = this->stub_address() + this->last_plt_size_ + this->branch_size_;
3143 if (to - loc + (1 << 25) < 2 << 25)
3145 if (size == 64 || !parameters->options().output_is_position_independent())
3152 do_write(Output_file*);
3154 // Plt call stub keys.
3158 Plt_stub_ent(const Symbol* sym)
3159 : sym_(sym), object_(0), addend_(0), locsym_(0)
3162 Plt_stub_ent(const Sized_relobj_file<size, big_endian>* object,
3163 unsigned int locsym_index)
3164 : sym_(NULL), object_(object), addend_(0), locsym_(locsym_index)
3167 Plt_stub_ent(const Sized_relobj_file<size, big_endian>* object,
3169 unsigned int r_type,
3171 : sym_(sym), object_(0), addend_(0), locsym_(0)
3174 this->addend_ = addend;
3175 else if (parameters->options().output_is_position_independent()
3176 && r_type == elfcpp::R_PPC_PLTREL24)
3178 this->addend_ = addend;
3179 if (this->addend_ >= 32768)
3180 this->object_ = object;
3184 Plt_stub_ent(const Sized_relobj_file<size, big_endian>* object,
3185 unsigned int locsym_index,
3186 unsigned int r_type,
3188 : sym_(NULL), object_(object), addend_(0), locsym_(locsym_index)
3191 this->addend_ = addend;
3192 else if (parameters->options().output_is_position_independent()
3193 && r_type == elfcpp::R_PPC_PLTREL24)
3194 this->addend_ = addend;
3197 bool operator==(const Plt_stub_ent& that) const
3199 return (this->sym_ == that.sym_
3200 && this->object_ == that.object_
3201 && this->addend_ == that.addend_
3202 && this->locsym_ == that.locsym_);
3206 const Sized_relobj_file<size, big_endian>* object_;
3207 typename elfcpp::Elf_types<size>::Elf_Addr addend_;
3208 unsigned int locsym_;
3211 class Plt_stub_ent_hash
3214 size_t operator()(const Plt_stub_ent& ent) const
3216 return (reinterpret_cast<uintptr_t>(ent.sym_)
3217 ^ reinterpret_cast<uintptr_t>(ent.object_)
3223 // Long branch stub keys.
3224 class Branch_stub_ent
3227 Branch_stub_ent(const Powerpc_relobj<size, big_endian>* obj, Address to)
3228 : dest_(to), toc_base_off_(0)
3231 toc_base_off_ = obj->toc_base_offset();
3234 bool operator==(const Branch_stub_ent& that) const
3236 return (this->dest_ == that.dest_
3238 || this->toc_base_off_ == that.toc_base_off_));
3242 unsigned int toc_base_off_;
3245 class Branch_stub_ent_hash
3248 size_t operator()(const Branch_stub_ent& ent) const
3249 { return ent.dest_ ^ ent.toc_base_off_; }
3252 // In a sane world this would be a global.
3253 Target_powerpc<size, big_endian>* targ_;
3254 // Map sym/object/addend to stub offset.
3255 Plt_stub_entries plt_call_stubs_;
3256 // Map destination address to stub offset.
3257 typedef Unordered_map<Branch_stub_ent, unsigned int,
3258 Branch_stub_ent_hash> Branch_stub_entries;
3259 Branch_stub_entries long_branch_stubs_;
3260 // size of input section
3261 section_size_type orig_data_size_;
3263 section_size_type plt_size_, last_plt_size_, branch_size_, last_branch_size_;
3264 // Whether .eh_frame info has been created for this stub section.
3265 bool eh_frame_added_;
3268 // Make a new stub table, and record.
3270 template<int size, bool big_endian>
3271 Stub_table<size, big_endian>*
3272 Target_powerpc<size, big_endian>::new_stub_table()
3274 Stub_table<size, big_endian>* stub_table
3275 = new Stub_table<size, big_endian>(this);
3276 this->stub_tables_.push_back(stub_table);
3280 // Delayed stub table initialisation, because we create the stub table
3281 // before we know to which section it will be attached.
3283 template<int size, bool big_endian>
3285 Stub_table<size, big_endian>::init(
3286 const Output_section::Input_section* owner,
3287 Output_section* output_section)
3289 this->set_relobj(owner->relobj());
3290 this->set_shndx(owner->shndx());
3291 this->set_addralign(this->relobj()->section_addralign(this->shndx()));
3292 this->set_output_section(output_section);
3293 this->orig_data_size_ = owner->current_data_size();
3295 std::vector<Output_relaxed_input_section*> new_relaxed;
3296 new_relaxed.push_back(this);
3297 output_section->convert_input_sections_to_relaxed_sections(new_relaxed);
3300 // Add a plt call stub, if we do not already have one for this
3301 // sym/object/addend combo.
3303 template<int size, bool big_endian>
3305 Stub_table<size, big_endian>::add_plt_call_entry(
3306 const Sized_relobj_file<size, big_endian>* object,
3308 unsigned int r_type,
3311 Plt_stub_ent ent(object, gsym, r_type, addend);
3312 Address off = this->plt_size_;
3313 std::pair<typename Plt_stub_entries::iterator, bool> p
3314 = this->plt_call_stubs_.insert(std::make_pair(ent, off));
3316 this->plt_size_ = off + this->plt_call_size(p.first);
3319 template<int size, bool big_endian>
3321 Stub_table<size, big_endian>::add_plt_call_entry(
3322 const Sized_relobj_file<size, big_endian>* object,
3323 unsigned int locsym_index,
3324 unsigned int r_type,
3327 Plt_stub_ent ent(object, locsym_index, r_type, addend);
3328 Address off = this->plt_size_;
3329 std::pair<typename Plt_stub_entries::iterator, bool> p
3330 = this->plt_call_stubs_.insert(std::make_pair(ent, off));
3332 this->plt_size_ = off + this->plt_call_size(p.first);
3335 // Find a plt call stub.
3337 template<int size, bool big_endian>
3338 typename Stub_table<size, big_endian>::Address
3339 Stub_table<size, big_endian>::find_plt_call_entry(
3340 const Sized_relobj_file<size, big_endian>* object,
3342 unsigned int r_type,
3343 Address addend) const
3345 Plt_stub_ent ent(object, gsym, r_type, addend);
3346 typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(ent);
3347 return p == this->plt_call_stubs_.end() ? invalid_address : p->second;
3350 template<int size, bool big_endian>
3351 typename Stub_table<size, big_endian>::Address
3352 Stub_table<size, big_endian>::find_plt_call_entry(const Symbol* gsym) const
3354 Plt_stub_ent ent(gsym);
3355 typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(ent);
3356 return p == this->plt_call_stubs_.end() ? invalid_address : p->second;
3359 template<int size, bool big_endian>
3360 typename Stub_table<size, big_endian>::Address
3361 Stub_table<size, big_endian>::find_plt_call_entry(
3362 const Sized_relobj_file<size, big_endian>* object,
3363 unsigned int locsym_index,
3364 unsigned int r_type,
3365 Address addend) const
3367 Plt_stub_ent ent(object, locsym_index, r_type, addend);
3368 typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(ent);
3369 return p == this->plt_call_stubs_.end() ? invalid_address : p->second;
3372 template<int size, bool big_endian>
3373 typename Stub_table<size, big_endian>::Address
3374 Stub_table<size, big_endian>::find_plt_call_entry(
3375 const Sized_relobj_file<size, big_endian>* object,
3376 unsigned int locsym_index) const
3378 Plt_stub_ent ent(object, locsym_index);
3379 typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(ent);
3380 return p == this->plt_call_stubs_.end() ? invalid_address : p->second;
3383 // Add a long branch stub if we don't already have one to given
3386 template<int size, bool big_endian>
3388 Stub_table<size, big_endian>::add_long_branch_entry(
3389 const Powerpc_relobj<size, big_endian>* object,
3392 Branch_stub_ent ent(object, to);
3393 Address off = this->branch_size_;
3394 if (this->long_branch_stubs_.insert(std::make_pair(ent, off)).second)
3396 unsigned int stub_size = this->branch_stub_size(to);
3397 this->branch_size_ = off + stub_size;
3398 if (size == 64 && stub_size != 4)
3399 this->targ_->add_branch_lookup_table(to);
3403 // Find long branch stub.
3405 template<int size, bool big_endian>
3406 typename Stub_table<size, big_endian>::Address
3407 Stub_table<size, big_endian>::find_long_branch_entry(
3408 const Powerpc_relobj<size, big_endian>* object,
3411 Branch_stub_ent ent(object, to);
3412 typename Branch_stub_entries::const_iterator p
3413 = this->long_branch_stubs_.find(ent);
3414 return p == this->long_branch_stubs_.end() ? invalid_address : p->second;
3417 // A class to handle .glink.
3419 template<int size, bool big_endian>
3420 class Output_data_glink : public Output_section_data
3423 static const int pltresolve_size = 16*4;
3425 Output_data_glink(Target_powerpc<size, big_endian>* targ)
3426 : Output_section_data(16), targ_(targ)
3430 add_eh_frame(Layout* layout)
3432 if (!parameters->options().ld_generated_unwind_info())
3436 layout->add_eh_frame_for_plt(this,
3437 Eh_cie<64>::eh_frame_cie,
3438 sizeof (Eh_cie<64>::eh_frame_cie),
3439 glink_eh_frame_fde_64,
3440 sizeof (glink_eh_frame_fde_64));
3443 // 32-bit .glink can use the default since the CIE return
3444 // address reg, LR, is valid.
3445 layout->add_eh_frame_for_plt(this,
3446 Eh_cie<32>::eh_frame_cie,
3447 sizeof (Eh_cie<32>::eh_frame_cie),
3449 sizeof (default_fde));
3450 // Except where LR is used in a PIC __glink_PLTresolve.
3451 if (parameters->options().output_is_position_independent())
3452 layout->add_eh_frame_for_plt(this,
3453 Eh_cie<32>::eh_frame_cie,
3454 sizeof (Eh_cie<32>::eh_frame_cie),
3455 glink_eh_frame_fde_32,
3456 sizeof (glink_eh_frame_fde_32));
3461 // Write to a map file.
3463 do_print_to_mapfile(Mapfile* mapfile) const
3464 { mapfile->print_output_data(this, _("** glink")); }
3468 set_final_data_size();
3472 do_write(Output_file*);
3474 // Allows access to .got and .plt for do_write.
3475 Target_powerpc<size, big_endian>* targ_;
3478 template<int size, bool big_endian>
3480 Output_data_glink<size, big_endian>::set_final_data_size()
3482 unsigned int count = this->targ_->plt_entry_count();
3483 section_size_type total = 0;
3489 // space for branch table
3490 total += 4 * (count - 1);
3492 total += -total & 15;
3493 total += this->pltresolve_size;
3497 total += this->pltresolve_size;
3499 // space for branch table
3502 total += 4 * (count - 0x8000);
3506 this->set_data_size(total);
3509 // Write out plt and long branch stub code.
3511 template<int size, bool big_endian>
3513 Stub_table<size, big_endian>::do_write(Output_file* of)
3515 if (this->plt_call_stubs_.empty()
3516 && this->long_branch_stubs_.empty())
3519 const section_size_type start_off = this->offset();
3520 const section_size_type off = this->stub_offset();
3521 const section_size_type oview_size =
3522 convert_to_section_size_type(this->data_size() - (off - start_off));
3523 unsigned char* const oview = of->get_output_view(off, oview_size);
3528 const Output_data_got_powerpc<size, big_endian>* got
3529 = this->targ_->got_section();
3530 Address got_os_addr = got->output_section()->address();
3532 if (!this->plt_call_stubs_.empty())
3534 // The base address of the .plt section.
3535 Address plt_base = this->targ_->plt_section()->address();
3536 Address iplt_base = invalid_address;
3538 // Write out plt call stubs.
3539 typename Plt_stub_entries::const_iterator cs;
3540 for (cs = this->plt_call_stubs_.begin();
3541 cs != this->plt_call_stubs_.end();
3545 Address pltoff = this->plt_off(cs, &is_iplt);
3546 Address plt_addr = pltoff;
3549 if (iplt_base == invalid_address)
3550 iplt_base = this->targ_->iplt_section()->address();
3551 plt_addr += iplt_base;
3554 plt_addr += plt_base;
3555 const Powerpc_relobj<size, big_endian>* ppcobj = static_cast
3556 <const Powerpc_relobj<size, big_endian>*>(cs->first.object_);
3557 Address got_addr = got_os_addr + ppcobj->toc_base_offset();
3558 Address off = plt_addr - got_addr;
3560 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
3561 gold_error(_("%s: linkage table error against `%s'"),
3562 cs->first.object_->name().c_str(),
3563 cs->first.sym_->demangled_name().c_str());
3565 bool static_chain = parameters->options().plt_static_chain();
3566 bool thread_safe = this->targ_->plt_thread_safe();
3567 bool use_fake_dep = false;
3568 Address cmp_branch_off = 0;
3571 unsigned int pltindex
3572 = ((pltoff - this->targ_->first_plt_entry_offset())
3573 / this->targ_->plt_entry_size());
3575 = (this->targ_->glink_section()->pltresolve_size
3577 if (pltindex > 32768)
3578 glinkoff += (pltindex - 32768) * 4;
3580 = this->targ_->glink_section()->address() + glinkoff;
3582 = (this->stub_address() + cs->second + 24
3583 + 4 * (ha(off) != 0)
3584 + 4 * (ha(off + 8 + 8 * static_chain) != ha(off))
3585 + 4 * static_chain);
3586 cmp_branch_off = to - from;
3587 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
3590 p = oview + cs->second;
3593 write_insn<big_endian>(p, std_2_1 + 40), p += 4;
3594 write_insn<big_endian>(p, addis_12_2 + ha(off)), p += 4;
3595 write_insn<big_endian>(p, ld_11_12 + l(off)), p += 4;
3596 if (ha(off + 8 + 8 * static_chain) != ha(off))
3598 write_insn<big_endian>(p, addi_12_12 + l(off)), p += 4;
3601 write_insn<big_endian>(p, mtctr_11), p += 4;
3604 write_insn<big_endian>(p, xor_11_11_11), p += 4;
3605 write_insn<big_endian>(p, add_12_12_11), p += 4;
3607 write_insn<big_endian>(p, ld_2_12 + l(off + 8)), p += 4;
3609 write_insn<big_endian>(p, ld_11_12 + l(off + 16)), p += 4;
3613 write_insn<big_endian>(p, std_2_1 + 40), p += 4;
3614 write_insn<big_endian>(p, ld_11_2 + l(off)), p += 4;
3615 if (ha(off + 8 + 8 * static_chain) != ha(off))
3617 write_insn<big_endian>(p, addi_2_2 + l(off)), p += 4;
3620 write_insn<big_endian>(p, mtctr_11), p += 4;
3623 write_insn<big_endian>(p, xor_11_11_11), p += 4;
3624 write_insn<big_endian>(p, add_2_2_11), p += 4;
3627 write_insn<big_endian>(p, ld_11_2 + l(off + 16)), p += 4;
3628 write_insn<big_endian>(p, ld_2_2 + l(off + 8)), p += 4;
3630 if (thread_safe && !use_fake_dep)
3632 write_insn<big_endian>(p, cmpldi_2_0), p += 4;
3633 write_insn<big_endian>(p, bnectr_p4), p += 4;
3634 write_insn<big_endian>(p, b | (cmp_branch_off & 0x3fffffc));
3637 write_insn<big_endian>(p, bctr);
3641 // Write out long branch stubs.
3642 typename Branch_stub_entries::const_iterator bs;
3643 for (bs = this->long_branch_stubs_.begin();
3644 bs != this->long_branch_stubs_.end();
3647 p = oview + this->plt_size_ + bs->second;
3648 Address loc = this->stub_address() + this->plt_size_ + bs->second;
3649 Address delta = bs->first.dest_ - loc;
3650 if (delta + (1 << 25) < 2 << 25)
3651 write_insn<big_endian>(p, b | (delta & 0x3fffffc));
3655 = this->targ_->find_branch_lookup_table(bs->first.dest_);
3656 gold_assert(brlt_addr != invalid_address);
3657 brlt_addr += this->targ_->brlt_section()->address();
3658 Address got_addr = got_os_addr + bs->first.toc_base_off_;
3659 Address brltoff = brlt_addr - got_addr;
3660 if (ha(brltoff) == 0)
3662 write_insn<big_endian>(p, ld_11_2 + l(brltoff)), p += 4;
3666 write_insn<big_endian>(p, addis_12_2 + ha(brltoff)), p += 4;
3667 write_insn<big_endian>(p, ld_11_12 + l(brltoff)), p += 4;
3669 write_insn<big_endian>(p, mtctr_11), p += 4;
3670 write_insn<big_endian>(p, bctr);
3676 if (!this->plt_call_stubs_.empty())
3678 // The base address of the .plt section.
3679 Address plt_base = this->targ_->plt_section()->address();
3680 Address iplt_base = invalid_address;
3681 // The address of _GLOBAL_OFFSET_TABLE_.
3682 Address g_o_t = invalid_address;
3684 // Write out plt call stubs.
3685 typename Plt_stub_entries::const_iterator cs;
3686 for (cs = this->plt_call_stubs_.begin();
3687 cs != this->plt_call_stubs_.end();
3691 Address plt_addr = this->plt_off(cs, &is_iplt);
3694 if (iplt_base == invalid_address)
3695 iplt_base = this->targ_->iplt_section()->address();
3696 plt_addr += iplt_base;
3699 plt_addr += plt_base;
3701 p = oview + cs->second;
3702 if (parameters->options().output_is_position_independent())
3705 const Powerpc_relobj<size, big_endian>* ppcobj
3706 = (static_cast<const Powerpc_relobj<size, big_endian>*>
3707 (cs->first.object_));
3708 if (ppcobj != NULL && cs->first.addend_ >= 32768)
3710 unsigned int got2 = ppcobj->got2_shndx();
3711 got_addr = ppcobj->get_output_section_offset(got2);
3712 gold_assert(got_addr != invalid_address);
3713 got_addr += (ppcobj->output_section(got2)->address()
3714 + cs->first.addend_);
3718 if (g_o_t == invalid_address)
3720 const Output_data_got_powerpc<size, big_endian>* got
3721 = this->targ_->got_section();
3722 g_o_t = got->address() + got->g_o_t();
3727 Address off = plt_addr - got_addr;
3730 write_insn<big_endian>(p + 0, lwz_11_30 + l(off));
3731 write_insn<big_endian>(p + 4, mtctr_11);
3732 write_insn<big_endian>(p + 8, bctr);
3736 write_insn<big_endian>(p + 0, addis_11_30 + ha(off));
3737 write_insn<big_endian>(p + 4, lwz_11_11 + l(off));
3738 write_insn<big_endian>(p + 8, mtctr_11);
3739 write_insn<big_endian>(p + 12, bctr);
3744 write_insn<big_endian>(p + 0, lis_11 + ha(plt_addr));
3745 write_insn<big_endian>(p + 4, lwz_11_11 + l(plt_addr));
3746 write_insn<big_endian>(p + 8, mtctr_11);
3747 write_insn<big_endian>(p + 12, bctr);
3752 // Write out long branch stubs.
3753 typename Branch_stub_entries::const_iterator bs;
3754 for (bs = this->long_branch_stubs_.begin();
3755 bs != this->long_branch_stubs_.end();
3758 p = oview + this->plt_size_ + bs->second;
3759 Address loc = this->stub_address() + this->plt_size_ + bs->second;
3760 Address delta = bs->first.dest_ - loc;
3761 if (delta + (1 << 25) < 2 << 25)
3762 write_insn<big_endian>(p, b | (delta & 0x3fffffc));
3763 else if (!parameters->options().output_is_position_independent())
3765 write_insn<big_endian>(p + 0, lis_12 + ha(bs->first.dest_));
3766 write_insn<big_endian>(p + 4, addi_12_12 + l(bs->first.dest_));
3767 write_insn<big_endian>(p + 8, mtctr_12);
3768 write_insn<big_endian>(p + 12, bctr);
3773 write_insn<big_endian>(p + 0, mflr_0);
3774 write_insn<big_endian>(p + 4, bcl_20_31);
3775 write_insn<big_endian>(p + 8, mflr_12);
3776 write_insn<big_endian>(p + 12, addis_12_12 + ha(delta));
3777 write_insn<big_endian>(p + 16, addi_12_12 + l(delta));
3778 write_insn<big_endian>(p + 20, mtlr_0);
3779 write_insn<big_endian>(p + 24, mtctr_12);
3780 write_insn<big_endian>(p + 28, bctr);
3786 // Write out .glink.
3788 template<int size, bool big_endian>
3790 Output_data_glink<size, big_endian>::do_write(Output_file* of)
3792 const section_size_type off = this->offset();
3793 const section_size_type oview_size =
3794 convert_to_section_size_type(this->data_size());
3795 unsigned char* const oview = of->get_output_view(off, oview_size);
3798 // The base address of the .plt section.
3799 typedef typename elfcpp::Elf_types<size>::Elf_Addr Address;
3800 Address plt_base = this->targ_->plt_section()->address();
3804 // Write pltresolve stub.
3806 Address after_bcl = this->address() + 16;
3807 Address pltoff = plt_base - after_bcl;
3809 elfcpp::Swap<64, big_endian>::writeval(p, pltoff), p += 8;
3811 write_insn<big_endian>(p, mflr_12), p += 4;
3812 write_insn<big_endian>(p, bcl_20_31), p += 4;
3813 write_insn<big_endian>(p, mflr_11), p += 4;
3814 write_insn<big_endian>(p, ld_2_11 + l(-16)), p += 4;
3815 write_insn<big_endian>(p, mtlr_12), p += 4;
3816 write_insn<big_endian>(p, add_12_2_11), p += 4;
3817 write_insn<big_endian>(p, ld_11_12 + 0), p += 4;
3818 write_insn<big_endian>(p, ld_2_12 + 8), p += 4;
3819 write_insn<big_endian>(p, mtctr_11), p += 4;
3820 write_insn<big_endian>(p, ld_11_12 + 16), p += 4;
3821 write_insn<big_endian>(p, bctr), p += 4;
3822 while (p < oview + this->pltresolve_size)
3823 write_insn<big_endian>(p, nop), p += 4;
3825 // Write lazy link call stubs.
3827 while (p < oview + oview_size)
3831 write_insn<big_endian>(p, li_0_0 + indx), p += 4;
3835 write_insn<big_endian>(p, lis_0_0 + hi(indx)), p += 4;
3836 write_insn<big_endian>(p, ori_0_0_0 + l(indx)), p += 4;
3838 uint32_t branch_off = 8 - (p - oview);
3839 write_insn<big_endian>(p, b + (branch_off & 0x3fffffc)), p += 4;
3845 const Output_data_got_powerpc<size, big_endian>* got
3846 = this->targ_->got_section();
3847 // The address of _GLOBAL_OFFSET_TABLE_.
3848 Address g_o_t = got->address() + got->g_o_t();
3850 // Write out pltresolve branch table.
3852 unsigned int the_end = oview_size - this->pltresolve_size;
3853 unsigned char* end_p = oview + the_end;
3854 while (p < end_p - 8 * 4)
3855 write_insn<big_endian>(p, b + end_p - p), p += 4;
3857 write_insn<big_endian>(p, nop), p += 4;
3859 // Write out pltresolve call stub.
3860 if (parameters->options().output_is_position_independent())
3862 Address res0_off = 0;
3863 Address after_bcl_off = the_end + 12;
3864 Address bcl_res0 = after_bcl_off - res0_off;
3866 write_insn<big_endian>(p + 0, addis_11_11 + ha(bcl_res0));
3867 write_insn<big_endian>(p + 4, mflr_0);
3868 write_insn<big_endian>(p + 8, bcl_20_31);
3869 write_insn<big_endian>(p + 12, addi_11_11 + l(bcl_res0));
3870 write_insn<big_endian>(p + 16, mflr_12);
3871 write_insn<big_endian>(p + 20, mtlr_0);
3872 write_insn<big_endian>(p + 24, sub_11_11_12);
3874 Address got_bcl = g_o_t + 4 - (after_bcl_off + this->address());
3876 write_insn<big_endian>(p + 28, addis_12_12 + ha(got_bcl));
3877 if (ha(got_bcl) == ha(got_bcl + 4))
3879 write_insn<big_endian>(p + 32, lwz_0_12 + l(got_bcl));
3880 write_insn<big_endian>(p + 36, lwz_12_12 + l(got_bcl + 4));
3884 write_insn<big_endian>(p + 32, lwzu_0_12 + l(got_bcl));
3885 write_insn<big_endian>(p + 36, lwz_12_12 + 4);
3887 write_insn<big_endian>(p + 40, mtctr_0);
3888 write_insn<big_endian>(p + 44, add_0_11_11);
3889 write_insn<big_endian>(p + 48, add_11_0_11);
3890 write_insn<big_endian>(p + 52, bctr);
3891 write_insn<big_endian>(p + 56, nop);
3892 write_insn<big_endian>(p + 60, nop);
3896 Address res0 = this->address();
3898 write_insn<big_endian>(p + 0, lis_12 + ha(g_o_t + 4));
3899 write_insn<big_endian>(p + 4, addis_11_11 + ha(-res0));
3900 if (ha(g_o_t + 4) == ha(g_o_t + 8))
3901 write_insn<big_endian>(p + 8, lwz_0_12 + l(g_o_t + 4));
3903 write_insn<big_endian>(p + 8, lwzu_0_12 + l(g_o_t + 4));
3904 write_insn<big_endian>(p + 12, addi_11_11 + l(-res0));
3905 write_insn<big_endian>(p + 16, mtctr_0);
3906 write_insn<big_endian>(p + 20, add_0_11_11);
3907 if (ha(g_o_t + 4) == ha(g_o_t + 8))
3908 write_insn<big_endian>(p + 24, lwz_12_12 + l(g_o_t + 8));
3910 write_insn<big_endian>(p + 24, lwz_12_12 + 4);
3911 write_insn<big_endian>(p + 28, add_11_0_11);
3912 write_insn<big_endian>(p + 32, bctr);
3913 write_insn<big_endian>(p + 36, nop);
3914 write_insn<big_endian>(p + 40, nop);
3915 write_insn<big_endian>(p + 44, nop);
3916 write_insn<big_endian>(p + 48, nop);
3917 write_insn<big_endian>(p + 52, nop);
3918 write_insn<big_endian>(p + 56, nop);
3919 write_insn<big_endian>(p + 60, nop);
3924 of->write_output_view(off, oview_size, oview);
3928 // A class to handle linker generated save/restore functions.
3930 template<int size, bool big_endian>
3931 class Output_data_save_res : public Output_section_data_build
3934 Output_data_save_res(Symbol_table* symtab);
3937 // Write to a map file.
3939 do_print_to_mapfile(Mapfile* mapfile) const
3940 { mapfile->print_output_data(this, _("** save/restore")); }
3943 do_write(Output_file*);
3946 // The maximum size of save/restore contents.
3947 static const unsigned int savres_max = 218*4;
3950 savres_define(Symbol_table* symtab,
3952 unsigned int lo, unsigned int hi,
3953 unsigned char* write_ent(unsigned char*, int),
3954 unsigned char* write_tail(unsigned char*, int));
3956 unsigned char *contents_;
3959 template<bool big_endian>
3960 static unsigned char*
3961 savegpr0(unsigned char* p, int r)
3963 uint32_t insn = std_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8;
3964 write_insn<big_endian>(p, insn);
3968 template<bool big_endian>
3969 static unsigned char*
3970 savegpr0_tail(unsigned char* p, int r)
3972 p = savegpr0<big_endian>(p, r);
3973 uint32_t insn = std_0_1 + 16;
3974 write_insn<big_endian>(p, insn);
3976 write_insn<big_endian>(p, blr);
3980 template<bool big_endian>
3981 static unsigned char*
3982 restgpr0(unsigned char* p, int r)
3984 uint32_t insn = ld_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8;
3985 write_insn<big_endian>(p, insn);
3989 template<bool big_endian>
3990 static unsigned char*
3991 restgpr0_tail(unsigned char* p, int r)
3993 uint32_t insn = ld_0_1 + 16;
3994 write_insn<big_endian>(p, insn);
3996 p = restgpr0<big_endian>(p, r);
3997 write_insn<big_endian>(p, mtlr_0);
4001 p = restgpr0<big_endian>(p, 30);
4002 p = restgpr0<big_endian>(p, 31);
4004 write_insn<big_endian>(p, blr);
4008 template<bool big_endian>
4009 static unsigned char*
4010 savegpr1(unsigned char* p, int r)
4012 uint32_t insn = std_0_12 + (r << 21) + (1 << 16) - (32 - r) * 8;
4013 write_insn<big_endian>(p, insn);
4017 template<bool big_endian>
4018 static unsigned char*
4019 savegpr1_tail(unsigned char* p, int r)
4021 p = savegpr1<big_endian>(p, r);
4022 write_insn<big_endian>(p, blr);
4026 template<bool big_endian>
4027 static unsigned char*
4028 restgpr1(unsigned char* p, int r)
4030 uint32_t insn = ld_0_12 + (r << 21) + (1 << 16) - (32 - r) * 8;
4031 write_insn<big_endian>(p, insn);
4035 template<bool big_endian>
4036 static unsigned char*
4037 restgpr1_tail(unsigned char* p, int r)
4039 p = restgpr1<big_endian>(p, r);
4040 write_insn<big_endian>(p, blr);
4044 template<bool big_endian>
4045 static unsigned char*
4046 savefpr(unsigned char* p, int r)
4048 uint32_t insn = stfd_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8;
4049 write_insn<big_endian>(p, insn);
4053 template<bool big_endian>
4054 static unsigned char*
4055 savefpr0_tail(unsigned char* p, int r)
4057 p = savefpr<big_endian>(p, r);
4058 write_insn<big_endian>(p, std_0_1 + 16);
4060 write_insn<big_endian>(p, blr);
4064 template<bool big_endian>
4065 static unsigned char*
4066 restfpr(unsigned char* p, int r)
4068 uint32_t insn = lfd_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8;
4069 write_insn<big_endian>(p, insn);
4073 template<bool big_endian>
4074 static unsigned char*
4075 restfpr0_tail(unsigned char* p, int r)
4077 write_insn<big_endian>(p, ld_0_1 + 16);
4079 p = restfpr<big_endian>(p, r);
4080 write_insn<big_endian>(p, mtlr_0);
4084 p = restfpr<big_endian>(p, 30);
4085 p = restfpr<big_endian>(p, 31);
4087 write_insn<big_endian>(p, blr);
4091 template<bool big_endian>
4092 static unsigned char*
4093 savefpr1_tail(unsigned char* p, int r)
4095 p = savefpr<big_endian>(p, r);
4096 write_insn<big_endian>(p, blr);
4100 template<bool big_endian>
4101 static unsigned char*
4102 restfpr1_tail(unsigned char* p, int r)
4104 p = restfpr<big_endian>(p, r);
4105 write_insn<big_endian>(p, blr);
4109 template<bool big_endian>
4110 static unsigned char*
4111 savevr(unsigned char* p, int r)
4113 uint32_t insn = li_12_0 + (1 << 16) - (32 - r) * 16;
4114 write_insn<big_endian>(p, insn);
4116 insn = stvx_0_12_0 + (r << 21);
4117 write_insn<big_endian>(p, insn);
4121 template<bool big_endian>
4122 static unsigned char*
4123 savevr_tail(unsigned char* p, int r)
4125 p = savevr<big_endian>(p, r);
4126 write_insn<big_endian>(p, blr);
4130 template<bool big_endian>
4131 static unsigned char*
4132 restvr(unsigned char* p, int r)
4134 uint32_t insn = li_12_0 + (1 << 16) - (32 - r) * 16;
4135 write_insn<big_endian>(p, insn);
4137 insn = lvx_0_12_0 + (r << 21);
4138 write_insn<big_endian>(p, insn);
4142 template<bool big_endian>
4143 static unsigned char*
4144 restvr_tail(unsigned char* p, int r)
4146 p = restvr<big_endian>(p, r);
4147 write_insn<big_endian>(p, blr);
4152 template<int size, bool big_endian>
4153 Output_data_save_res<size, big_endian>::Output_data_save_res(
4154 Symbol_table* symtab)
4155 : Output_section_data_build(4),
4158 this->savres_define(symtab,
4159 "_savegpr0_", 14, 31,
4160 savegpr0<big_endian>, savegpr0_tail<big_endian>);
4161 this->savres_define(symtab,
4162 "_restgpr0_", 14, 29,
4163 restgpr0<big_endian>, restgpr0_tail<big_endian>);
4164 this->savres_define(symtab,
4165 "_restgpr0_", 30, 31,
4166 restgpr0<big_endian>, restgpr0_tail<big_endian>);
4167 this->savres_define(symtab,
4168 "_savegpr1_", 14, 31,
4169 savegpr1<big_endian>, savegpr1_tail<big_endian>);
4170 this->savres_define(symtab,
4171 "_restgpr1_", 14, 31,
4172 restgpr1<big_endian>, restgpr1_tail<big_endian>);
4173 this->savres_define(symtab,
4174 "_savefpr_", 14, 31,
4175 savefpr<big_endian>, savefpr0_tail<big_endian>);
4176 this->savres_define(symtab,
4177 "_restfpr_", 14, 29,
4178 restfpr<big_endian>, restfpr0_tail<big_endian>);
4179 this->savres_define(symtab,
4180 "_restfpr_", 30, 31,
4181 restfpr<big_endian>, restfpr0_tail<big_endian>);
4182 this->savres_define(symtab,
4184 savefpr<big_endian>, savefpr1_tail<big_endian>);
4185 this->savres_define(symtab,
4187 restfpr<big_endian>, restfpr1_tail<big_endian>);
4188 this->savres_define(symtab,
4190 savevr<big_endian>, savevr_tail<big_endian>);
4191 this->savres_define(symtab,
4193 restvr<big_endian>, restvr_tail<big_endian>);
4196 template<int size, bool big_endian>
4198 Output_data_save_res<size, big_endian>::savres_define(
4199 Symbol_table* symtab,
4201 unsigned int lo, unsigned int hi,
4202 unsigned char* write_ent(unsigned char*, int),
4203 unsigned char* write_tail(unsigned char*, int))
4205 size_t len = strlen(name);
4206 bool writing = false;
4209 memcpy(sym, name, len);
4212 for (unsigned int i = lo; i <= hi; i++)
4214 sym[len + 0] = i / 10 + '0';
4215 sym[len + 1] = i % 10 + '0';
4216 Symbol* gsym = symtab->lookup(sym);
4217 bool refd = gsym != NULL && gsym->is_undefined();
4218 writing = writing || refd;
4221 if (this->contents_ == NULL)
4222 this->contents_ = new unsigned char[this->savres_max];
4224 section_size_type value = this->current_data_size();
4225 unsigned char* p = this->contents_ + value;
4227 p = write_ent(p, i);
4229 p = write_tail(p, i);
4230 section_size_type cur_size = p - this->contents_;
4231 this->set_current_data_size(cur_size);
4233 symtab->define_in_output_data(sym, NULL, Symbol_table::PREDEFINED,
4234 this, value, cur_size - value,
4235 elfcpp::STT_FUNC, elfcpp::STB_GLOBAL,
4236 elfcpp::STV_HIDDEN, 0, false, false);
4241 // Write out save/restore.
4243 template<int size, bool big_endian>
4245 Output_data_save_res<size, big_endian>::do_write(Output_file* of)
4247 const section_size_type off = this->offset();
4248 const section_size_type oview_size =
4249 convert_to_section_size_type(this->data_size());
4250 unsigned char* const oview = of->get_output_view(off, oview_size);
4251 memcpy(oview, this->contents_, oview_size);
4252 of->write_output_view(off, oview_size, oview);
4256 // Create the glink section.
4258 template<int size, bool big_endian>
4260 Target_powerpc<size, big_endian>::make_glink_section(Layout* layout)
4262 if (this->glink_ == NULL)
4264 this->glink_ = new Output_data_glink<size, big_endian>(this);
4265 this->glink_->add_eh_frame(layout);
4266 layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS,
4267 elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR,
4268 this->glink_, ORDER_TEXT, false);
4272 // Create a PLT entry for a global symbol.
4274 template<int size, bool big_endian>
4276 Target_powerpc<size, big_endian>::make_plt_entry(Symbol_table* symtab,
4280 if (gsym->type() == elfcpp::STT_GNU_IFUNC
4281 && gsym->can_use_relative_reloc(false))
4283 if (this->iplt_ == NULL)
4284 this->make_iplt_section(symtab, layout);
4285 this->iplt_->add_ifunc_entry(gsym);
4289 if (this->plt_ == NULL)
4290 this->make_plt_section(symtab, layout);
4291 this->plt_->add_entry(gsym);
4295 // Make a PLT entry for a local STT_GNU_IFUNC symbol.
4297 template<int size, bool big_endian>
4299 Target_powerpc<size, big_endian>::make_local_ifunc_plt_entry(
4300 Symbol_table* symtab,
4302 Sized_relobj_file<size, big_endian>* relobj,
4305 if (this->iplt_ == NULL)
4306 this->make_iplt_section(symtab, layout);
4307 this->iplt_->add_local_ifunc_entry(relobj, r_sym);
4310 // Return the number of entries in the PLT.
4312 template<int size, bool big_endian>
4314 Target_powerpc<size, big_endian>::plt_entry_count() const
4316 if (this->plt_ == NULL)
4318 unsigned int count = this->plt_->entry_count();
4319 if (this->iplt_ != NULL)
4320 count += this->iplt_->entry_count();
4324 // Return the offset of the first non-reserved PLT entry.
4326 template<int size, bool big_endian>
4328 Target_powerpc<size, big_endian>::first_plt_entry_offset() const
4330 return this->plt_->first_plt_entry_offset();
4333 // Return the size of each PLT entry.
4335 template<int size, bool big_endian>
4337 Target_powerpc<size, big_endian>::plt_entry_size() const
4339 return Output_data_plt_powerpc<size, big_endian>::get_plt_entry_size();
4342 // Create a GOT entry for local dynamic __tls_get_addr calls.
4344 template<int size, bool big_endian>
4346 Target_powerpc<size, big_endian>::tlsld_got_offset(
4347 Symbol_table* symtab,
4349 Sized_relobj_file<size, big_endian>* object)
4351 if (this->tlsld_got_offset_ == -1U)
4353 gold_assert(symtab != NULL && layout != NULL && object != NULL);
4354 Reloc_section* rela_dyn = this->rela_dyn_section(layout);
4355 Output_data_got_powerpc<size, big_endian>* got
4356 = this->got_section(symtab, layout);
4357 unsigned int got_offset = got->add_constant_pair(0, 0);
4358 rela_dyn->add_local(object, 0, elfcpp::R_POWERPC_DTPMOD, got,
4360 this->tlsld_got_offset_ = got_offset;
4362 return this->tlsld_got_offset_;
4365 // Get the Reference_flags for a particular relocation.
4367 template<int size, bool big_endian>
4369 Target_powerpc<size, big_endian>::Scan::get_reference_flags(unsigned int r_type)
4373 case elfcpp::R_POWERPC_NONE:
4374 case elfcpp::R_POWERPC_GNU_VTINHERIT:
4375 case elfcpp::R_POWERPC_GNU_VTENTRY:
4376 case elfcpp::R_PPC64_TOC:
4377 // No symbol reference.
4380 case elfcpp::R_PPC64_ADDR64:
4381 case elfcpp::R_PPC64_UADDR64:
4382 case elfcpp::R_POWERPC_ADDR32:
4383 case elfcpp::R_POWERPC_UADDR32:
4384 case elfcpp::R_POWERPC_ADDR16:
4385 case elfcpp::R_POWERPC_UADDR16:
4386 case elfcpp::R_POWERPC_ADDR16_LO:
4387 case elfcpp::R_POWERPC_ADDR16_HI:
4388 case elfcpp::R_POWERPC_ADDR16_HA:
4389 return Symbol::ABSOLUTE_REF;
4391 case elfcpp::R_POWERPC_ADDR24:
4392 case elfcpp::R_POWERPC_ADDR14:
4393 case elfcpp::R_POWERPC_ADDR14_BRTAKEN:
4394 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN:
4395 return Symbol::FUNCTION_CALL | Symbol::ABSOLUTE_REF;
4397 case elfcpp::R_PPC64_REL64:
4398 case elfcpp::R_POWERPC_REL32:
4399 case elfcpp::R_PPC_LOCAL24PC:
4400 case elfcpp::R_POWERPC_REL16:
4401 case elfcpp::R_POWERPC_REL16_LO:
4402 case elfcpp::R_POWERPC_REL16_HI:
4403 case elfcpp::R_POWERPC_REL16_HA:
4404 return Symbol::RELATIVE_REF;
4406 case elfcpp::R_POWERPC_REL24:
4407 case elfcpp::R_PPC_PLTREL24:
4408 case elfcpp::R_POWERPC_REL14:
4409 case elfcpp::R_POWERPC_REL14_BRTAKEN:
4410 case elfcpp::R_POWERPC_REL14_BRNTAKEN:
4411 return Symbol::FUNCTION_CALL | Symbol::RELATIVE_REF;
4413 case elfcpp::R_POWERPC_GOT16:
4414 case elfcpp::R_POWERPC_GOT16_LO:
4415 case elfcpp::R_POWERPC_GOT16_HI:
4416 case elfcpp::R_POWERPC_GOT16_HA:
4417 case elfcpp::R_PPC64_GOT16_DS:
4418 case elfcpp::R_PPC64_GOT16_LO_DS:
4419 case elfcpp::R_PPC64_TOC16:
4420 case elfcpp::R_PPC64_TOC16_LO:
4421 case elfcpp::R_PPC64_TOC16_HI:
4422 case elfcpp::R_PPC64_TOC16_HA:
4423 case elfcpp::R_PPC64_TOC16_DS:
4424 case elfcpp::R_PPC64_TOC16_LO_DS:
4426 return Symbol::ABSOLUTE_REF;
4428 case elfcpp::R_POWERPC_GOT_TPREL16:
4429 case elfcpp::R_POWERPC_TLS:
4430 return Symbol::TLS_REF;
4432 case elfcpp::R_POWERPC_COPY:
4433 case elfcpp::R_POWERPC_GLOB_DAT:
4434 case elfcpp::R_POWERPC_JMP_SLOT:
4435 case elfcpp::R_POWERPC_RELATIVE:
4436 case elfcpp::R_POWERPC_DTPMOD:
4438 // Not expected. We will give an error later.
4443 // Report an unsupported relocation against a local symbol.
4445 template<int size, bool big_endian>
4447 Target_powerpc<size, big_endian>::Scan::unsupported_reloc_local(
4448 Sized_relobj_file<size, big_endian>* object,
4449 unsigned int r_type)
4451 gold_error(_("%s: unsupported reloc %u against local symbol"),
4452 object->name().c_str(), r_type);
4455 // We are about to emit a dynamic relocation of type R_TYPE. If the
4456 // dynamic linker does not support it, issue an error.
4458 template<int size, bool big_endian>
4460 Target_powerpc<size, big_endian>::Scan::check_non_pic(Relobj* object,
4461 unsigned int r_type)
4463 gold_assert(r_type != elfcpp::R_POWERPC_NONE);
4465 // These are the relocation types supported by glibc for both 32-bit
4466 // and 64-bit powerpc.
4469 case elfcpp::R_POWERPC_NONE:
4470 case elfcpp::R_POWERPC_RELATIVE:
4471 case elfcpp::R_POWERPC_GLOB_DAT:
4472 case elfcpp::R_POWERPC_DTPMOD:
4473 case elfcpp::R_POWERPC_DTPREL:
4474 case elfcpp::R_POWERPC_TPREL:
4475 case elfcpp::R_POWERPC_JMP_SLOT:
4476 case elfcpp::R_POWERPC_COPY:
4477 case elfcpp::R_POWERPC_IRELATIVE:
4478 case elfcpp::R_POWERPC_ADDR32:
4479 case elfcpp::R_POWERPC_UADDR32:
4480 case elfcpp::R_POWERPC_ADDR24:
4481 case elfcpp::R_POWERPC_ADDR16:
4482 case elfcpp::R_POWERPC_UADDR16:
4483 case elfcpp::R_POWERPC_ADDR16_LO:
4484 case elfcpp::R_POWERPC_ADDR16_HI:
4485 case elfcpp::R_POWERPC_ADDR16_HA:
4486 case elfcpp::R_POWERPC_ADDR14:
4487 case elfcpp::R_POWERPC_ADDR14_BRTAKEN:
4488 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN:
4489 case elfcpp::R_POWERPC_REL32:
4490 case elfcpp::R_POWERPC_REL24:
4491 case elfcpp::R_POWERPC_TPREL16:
4492 case elfcpp::R_POWERPC_TPREL16_LO:
4493 case elfcpp::R_POWERPC_TPREL16_HI:
4494 case elfcpp::R_POWERPC_TPREL16_HA:
4505 // These are the relocation types supported only on 64-bit.
4506 case elfcpp::R_PPC64_ADDR64:
4507 case elfcpp::R_PPC64_UADDR64:
4508 case elfcpp::R_PPC64_JMP_IREL:
4509 case elfcpp::R_PPC64_ADDR16_DS:
4510 case elfcpp::R_PPC64_ADDR16_LO_DS:
4511 case elfcpp::R_PPC64_ADDR16_HIGHER:
4512 case elfcpp::R_PPC64_ADDR16_HIGHEST:
4513 case elfcpp::R_PPC64_ADDR16_HIGHERA:
4514 case elfcpp::R_PPC64_ADDR16_HIGHESTA:
4515 case elfcpp::R_PPC64_REL64:
4516 case elfcpp::R_POWERPC_ADDR30:
4517 case elfcpp::R_PPC64_TPREL16_DS:
4518 case elfcpp::R_PPC64_TPREL16_LO_DS:
4519 case elfcpp::R_PPC64_TPREL16_HIGHER:
4520 case elfcpp::R_PPC64_TPREL16_HIGHEST:
4521 case elfcpp::R_PPC64_TPREL16_HIGHERA:
4522 case elfcpp::R_PPC64_TPREL16_HIGHESTA:
4533 // These are the relocation types supported only on 32-bit.
4534 // ??? glibc ld.so doesn't need to support these.
4535 case elfcpp::R_POWERPC_DTPREL16:
4536 case elfcpp::R_POWERPC_DTPREL16_LO:
4537 case elfcpp::R_POWERPC_DTPREL16_HI:
4538 case elfcpp::R_POWERPC_DTPREL16_HA:
4546 // This prevents us from issuing more than one error per reloc
4547 // section. But we can still wind up issuing more than one
4548 // error per object file.
4549 if (this->issued_non_pic_error_)
4551 gold_assert(parameters->options().output_is_position_independent());
4552 object->error(_("requires unsupported dynamic reloc; "
4553 "recompile with -fPIC"));
4554 this->issued_non_pic_error_ = true;
4558 // Return whether we need to make a PLT entry for a relocation of the
4559 // given type against a STT_GNU_IFUNC symbol.
4561 template<int size, bool big_endian>
4563 Target_powerpc<size, big_endian>::Scan::reloc_needs_plt_for_ifunc(
4564 Sized_relobj_file<size, big_endian>* object,
4565 unsigned int r_type)
4567 // In non-pic code any reference will resolve to the plt call stub
4568 // for the ifunc symbol.
4569 if (size == 32 && !parameters->options().output_is_position_independent())
4574 // Word size refs from data sections are OK.
4575 case elfcpp::R_POWERPC_ADDR32:
4576 case elfcpp::R_POWERPC_UADDR32:
4581 case elfcpp::R_PPC64_ADDR64:
4582 case elfcpp::R_PPC64_UADDR64:
4587 // GOT refs are good.
4588 case elfcpp::R_POWERPC_GOT16:
4589 case elfcpp::R_POWERPC_GOT16_LO:
4590 case elfcpp::R_POWERPC_GOT16_HI:
4591 case elfcpp::R_POWERPC_GOT16_HA:
4592 case elfcpp::R_PPC64_GOT16_DS:
4593 case elfcpp::R_PPC64_GOT16_LO_DS:
4596 // So are function calls.
4597 case elfcpp::R_POWERPC_ADDR24:
4598 case elfcpp::R_POWERPC_ADDR14:
4599 case elfcpp::R_POWERPC_ADDR14_BRTAKEN:
4600 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN:
4601 case elfcpp::R_POWERPC_REL24:
4602 case elfcpp::R_PPC_PLTREL24:
4603 case elfcpp::R_POWERPC_REL14:
4604 case elfcpp::R_POWERPC_REL14_BRTAKEN:
4605 case elfcpp::R_POWERPC_REL14_BRNTAKEN:
4612 // Anything else is a problem.
4613 // If we are building a static executable, the libc startup function
4614 // responsible for applying indirect function relocations is going
4615 // to complain about the reloc type.
4616 // If we are building a dynamic executable, we will have a text
4617 // relocation. The dynamic loader will set the text segment
4618 // writable and non-executable to apply text relocations. So we'll
4619 // segfault when trying to run the indirection function to resolve
4621 gold_error(_("%s: unsupported reloc %u for IFUNC symbol"),
4622 object->name().c_str(), r_type);
4626 // Scan a relocation for a local symbol.
4628 template<int size, bool big_endian>
4630 Target_powerpc<size, big_endian>::Scan::local(
4631 Symbol_table* symtab,
4633 Target_powerpc<size, big_endian>* target,
4634 Sized_relobj_file<size, big_endian>* object,
4635 unsigned int data_shndx,
4636 Output_section* output_section,
4637 const elfcpp::Rela<size, big_endian>& reloc,
4638 unsigned int r_type,
4639 const elfcpp::Sym<size, big_endian>& lsym,
4642 this->maybe_skip_tls_get_addr_call(r_type, NULL);
4644 if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD)
4645 || (size == 32 && r_type == elfcpp::R_PPC_TLSGD))
4647 this->expect_tls_get_addr_call();
4648 const tls::Tls_optimization tls_type = target->optimize_tls_gd(true);
4649 if (tls_type != tls::TLSOPT_NONE)
4650 this->skip_next_tls_get_addr_call();
4652 else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD)
4653 || (size == 32 && r_type == elfcpp::R_PPC_TLSLD))
4655 this->expect_tls_get_addr_call();
4656 const tls::Tls_optimization tls_type = target->optimize_tls_ld();
4657 if (tls_type != tls::TLSOPT_NONE)
4658 this->skip_next_tls_get_addr_call();
4661 Powerpc_relobj<size, big_endian>* ppc_object
4662 = static_cast<Powerpc_relobj<size, big_endian>*>(object);
4667 && data_shndx == ppc_object->opd_shndx()
4668 && r_type == elfcpp::R_PPC64_ADDR64)
4669 ppc_object->set_opd_discard(reloc.get_r_offset());
4673 // A local STT_GNU_IFUNC symbol may require a PLT entry.
4674 bool is_ifunc = lsym.get_st_type() == elfcpp::STT_GNU_IFUNC;
4675 if (is_ifunc && this->reloc_needs_plt_for_ifunc(object, r_type))
4677 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
4678 target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(),
4679 r_type, r_sym, reloc.get_r_addend());
4680 target->make_local_ifunc_plt_entry(symtab, layout, object, r_sym);
4685 case elfcpp::R_POWERPC_NONE:
4686 case elfcpp::R_POWERPC_GNU_VTINHERIT:
4687 case elfcpp::R_POWERPC_GNU_VTENTRY:
4688 case elfcpp::R_PPC64_TOCSAVE:
4689 case elfcpp::R_PPC_EMB_MRKREF:
4690 case elfcpp::R_POWERPC_TLS:
4693 case elfcpp::R_PPC64_TOC:
4695 Output_data_got_powerpc<size, big_endian>* got
4696 = target->got_section(symtab, layout);
4697 if (parameters->options().output_is_position_independent())
4699 Address off = reloc.get_r_offset();
4701 && data_shndx == ppc_object->opd_shndx()
4702 && ppc_object->get_opd_discard(off - 8))
4705 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
4706 Powerpc_relobj<size, big_endian>* symobj = ppc_object;
4707 rela_dyn->add_output_section_relative(got->output_section(),
4708 elfcpp::R_POWERPC_RELATIVE,
4710 object, data_shndx, off,
4711 symobj->toc_base_offset());
4716 case elfcpp::R_PPC64_ADDR64:
4717 case elfcpp::R_PPC64_UADDR64:
4718 case elfcpp::R_POWERPC_ADDR32:
4719 case elfcpp::R_POWERPC_UADDR32:
4720 case elfcpp::R_POWERPC_ADDR24:
4721 case elfcpp::R_POWERPC_ADDR16:
4722 case elfcpp::R_POWERPC_ADDR16_LO:
4723 case elfcpp::R_POWERPC_ADDR16_HI:
4724 case elfcpp::R_POWERPC_ADDR16_HA:
4725 case elfcpp::R_POWERPC_UADDR16:
4726 case elfcpp::R_PPC64_ADDR16_HIGHER:
4727 case elfcpp::R_PPC64_ADDR16_HIGHERA:
4728 case elfcpp::R_PPC64_ADDR16_HIGHEST:
4729 case elfcpp::R_PPC64_ADDR16_HIGHESTA:
4730 case elfcpp::R_PPC64_ADDR16_DS:
4731 case elfcpp::R_PPC64_ADDR16_LO_DS:
4732 case elfcpp::R_POWERPC_ADDR14:
4733 case elfcpp::R_POWERPC_ADDR14_BRTAKEN:
4734 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN:
4735 // If building a shared library (or a position-independent
4736 // executable), we need to create a dynamic relocation for
4738 if (parameters->options().output_is_position_independent()
4739 || (size == 64 && is_ifunc))
4741 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
4743 if ((size == 32 && r_type == elfcpp::R_POWERPC_ADDR32)
4744 || (size == 64 && r_type == elfcpp::R_PPC64_ADDR64))
4746 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
4747 unsigned int dynrel = elfcpp::R_POWERPC_RELATIVE;
4750 rela_dyn = target->iplt_section()->rel_plt();
4751 dynrel = elfcpp::R_POWERPC_IRELATIVE;
4753 rela_dyn->add_local_relative(object, r_sym, dynrel,
4754 output_section, data_shndx,
4755 reloc.get_r_offset(),
4756 reloc.get_r_addend(), false);
4760 check_non_pic(object, r_type);
4761 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
4762 rela_dyn->add_local(object, r_sym, r_type, output_section,
4763 data_shndx, reloc.get_r_offset(),
4764 reloc.get_r_addend());
4769 case elfcpp::R_POWERPC_REL24:
4770 case elfcpp::R_PPC_PLTREL24:
4771 case elfcpp::R_PPC_LOCAL24PC:
4772 target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(),
4773 r_type, elfcpp::elf_r_sym<size>(reloc.get_r_info()),
4774 reloc.get_r_addend());
4777 case elfcpp::R_POWERPC_REL14:
4778 case elfcpp::R_POWERPC_REL14_BRTAKEN:
4779 case elfcpp::R_POWERPC_REL14_BRNTAKEN:
4780 target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(),
4781 r_type, elfcpp::elf_r_sym<size>(reloc.get_r_info()),
4782 reloc.get_r_addend());
4785 case elfcpp::R_PPC64_REL64:
4786 case elfcpp::R_POWERPC_REL32:
4787 case elfcpp::R_POWERPC_REL16:
4788 case elfcpp::R_POWERPC_REL16_LO:
4789 case elfcpp::R_POWERPC_REL16_HI:
4790 case elfcpp::R_POWERPC_REL16_HA:
4791 case elfcpp::R_POWERPC_SECTOFF:
4792 case elfcpp::R_POWERPC_TPREL16:
4793 case elfcpp::R_POWERPC_DTPREL16:
4794 case elfcpp::R_POWERPC_SECTOFF_LO:
4795 case elfcpp::R_POWERPC_TPREL16_LO:
4796 case elfcpp::R_POWERPC_DTPREL16_LO:
4797 case elfcpp::R_POWERPC_SECTOFF_HI:
4798 case elfcpp::R_POWERPC_TPREL16_HI:
4799 case elfcpp::R_POWERPC_DTPREL16_HI:
4800 case elfcpp::R_POWERPC_SECTOFF_HA:
4801 case elfcpp::R_POWERPC_TPREL16_HA:
4802 case elfcpp::R_POWERPC_DTPREL16_HA:
4803 case elfcpp::R_PPC64_DTPREL16_HIGHER:
4804 case elfcpp::R_PPC64_TPREL16_HIGHER:
4805 case elfcpp::R_PPC64_DTPREL16_HIGHERA:
4806 case elfcpp::R_PPC64_TPREL16_HIGHERA:
4807 case elfcpp::R_PPC64_DTPREL16_HIGHEST:
4808 case elfcpp::R_PPC64_TPREL16_HIGHEST:
4809 case elfcpp::R_PPC64_DTPREL16_HIGHESTA:
4810 case elfcpp::R_PPC64_TPREL16_HIGHESTA:
4811 case elfcpp::R_PPC64_TPREL16_DS:
4812 case elfcpp::R_PPC64_TPREL16_LO_DS:
4813 case elfcpp::R_PPC64_DTPREL16_DS:
4814 case elfcpp::R_PPC64_DTPREL16_LO_DS:
4815 case elfcpp::R_PPC64_SECTOFF_DS:
4816 case elfcpp::R_PPC64_SECTOFF_LO_DS:
4817 case elfcpp::R_PPC64_TLSGD:
4818 case elfcpp::R_PPC64_TLSLD:
4821 case elfcpp::R_POWERPC_GOT16:
4822 case elfcpp::R_POWERPC_GOT16_LO:
4823 case elfcpp::R_POWERPC_GOT16_HI:
4824 case elfcpp::R_POWERPC_GOT16_HA:
4825 case elfcpp::R_PPC64_GOT16_DS:
4826 case elfcpp::R_PPC64_GOT16_LO_DS:
4828 // The symbol requires a GOT entry.
4829 Output_data_got_powerpc<size, big_endian>* got
4830 = target->got_section(symtab, layout);
4831 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
4833 if (!parameters->options().output_is_position_independent())
4835 if (size == 32 && is_ifunc)
4836 got->add_local_plt(object, r_sym, GOT_TYPE_STANDARD);
4838 got->add_local(object, r_sym, GOT_TYPE_STANDARD);
4840 else if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD))
4842 // If we are generating a shared object or a pie, this
4843 // symbol's GOT entry will be set by a dynamic relocation.
4845 off = got->add_constant(0);
4846 object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off);
4848 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
4849 unsigned int dynrel = elfcpp::R_POWERPC_RELATIVE;
4852 rela_dyn = target->iplt_section()->rel_plt();
4853 dynrel = elfcpp::R_POWERPC_IRELATIVE;
4855 rela_dyn->add_local_relative(object, r_sym, dynrel,
4856 got, off, 0, false);
4861 case elfcpp::R_PPC64_TOC16:
4862 case elfcpp::R_PPC64_TOC16_LO:
4863 case elfcpp::R_PPC64_TOC16_HI:
4864 case elfcpp::R_PPC64_TOC16_HA:
4865 case elfcpp::R_PPC64_TOC16_DS:
4866 case elfcpp::R_PPC64_TOC16_LO_DS:
4867 // We need a GOT section.
4868 target->got_section(symtab, layout);
4871 case elfcpp::R_POWERPC_GOT_TLSGD16:
4872 case elfcpp::R_POWERPC_GOT_TLSGD16_LO:
4873 case elfcpp::R_POWERPC_GOT_TLSGD16_HI:
4874 case elfcpp::R_POWERPC_GOT_TLSGD16_HA:
4876 const tls::Tls_optimization tls_type = target->optimize_tls_gd(true);
4877 if (tls_type == tls::TLSOPT_NONE)
4879 Output_data_got_powerpc<size, big_endian>* got
4880 = target->got_section(symtab, layout);
4881 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
4882 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
4883 got->add_local_tls_pair(object, r_sym, GOT_TYPE_TLSGD,
4884 rela_dyn, elfcpp::R_POWERPC_DTPMOD);
4886 else if (tls_type == tls::TLSOPT_TO_LE)
4888 // no GOT relocs needed for Local Exec.
4895 case elfcpp::R_POWERPC_GOT_TLSLD16:
4896 case elfcpp::R_POWERPC_GOT_TLSLD16_LO:
4897 case elfcpp::R_POWERPC_GOT_TLSLD16_HI:
4898 case elfcpp::R_POWERPC_GOT_TLSLD16_HA:
4900 const tls::Tls_optimization tls_type = target->optimize_tls_ld();
4901 if (tls_type == tls::TLSOPT_NONE)
4902 target->tlsld_got_offset(symtab, layout, object);
4903 else if (tls_type == tls::TLSOPT_TO_LE)
4905 // no GOT relocs needed for Local Exec.
4906 if (parameters->options().emit_relocs())
4908 Output_section* os = layout->tls_segment()->first_section();
4909 gold_assert(os != NULL);
4910 os->set_needs_symtab_index();
4918 case elfcpp::R_POWERPC_GOT_DTPREL16:
4919 case elfcpp::R_POWERPC_GOT_DTPREL16_LO:
4920 case elfcpp::R_POWERPC_GOT_DTPREL16_HI:
4921 case elfcpp::R_POWERPC_GOT_DTPREL16_HA:
4923 Output_data_got_powerpc<size, big_endian>* got
4924 = target->got_section(symtab, layout);
4925 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
4926 got->add_local_tls(object, r_sym, GOT_TYPE_DTPREL);
4930 case elfcpp::R_POWERPC_GOT_TPREL16:
4931 case elfcpp::R_POWERPC_GOT_TPREL16_LO:
4932 case elfcpp::R_POWERPC_GOT_TPREL16_HI:
4933 case elfcpp::R_POWERPC_GOT_TPREL16_HA:
4935 const tls::Tls_optimization tls_type = target->optimize_tls_ie(true);
4936 if (tls_type == tls::TLSOPT_NONE)
4938 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
4939 if (!object->local_has_got_offset(r_sym, GOT_TYPE_TPREL))
4941 Output_data_got_powerpc<size, big_endian>* got
4942 = target->got_section(symtab, layout);
4943 unsigned int off = got->add_constant(0);
4944 object->set_local_got_offset(r_sym, GOT_TYPE_TPREL, off);
4946 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
4947 rela_dyn->add_symbolless_local_addend(object, r_sym,
4948 elfcpp::R_POWERPC_TPREL,
4952 else if (tls_type == tls::TLSOPT_TO_LE)
4954 // no GOT relocs needed for Local Exec.
4962 unsupported_reloc_local(object, r_type);
4968 case elfcpp::R_POWERPC_GOT_TLSLD16:
4969 case elfcpp::R_POWERPC_GOT_TLSGD16:
4970 case elfcpp::R_POWERPC_GOT_TPREL16:
4971 case elfcpp::R_POWERPC_GOT_DTPREL16:
4972 case elfcpp::R_POWERPC_GOT16:
4973 case elfcpp::R_PPC64_GOT16_DS:
4974 case elfcpp::R_PPC64_TOC16:
4975 case elfcpp::R_PPC64_TOC16_DS:
4976 ppc_object->set_has_small_toc_reloc();
4982 // Report an unsupported relocation against a global symbol.
4984 template<int size, bool big_endian>
4986 Target_powerpc<size, big_endian>::Scan::unsupported_reloc_global(
4987 Sized_relobj_file<size, big_endian>* object,
4988 unsigned int r_type,
4991 gold_error(_("%s: unsupported reloc %u against global symbol %s"),
4992 object->name().c_str(), r_type, gsym->demangled_name().c_str());
4995 // Scan a relocation for a global symbol.
4997 template<int size, bool big_endian>
4999 Target_powerpc<size, big_endian>::Scan::global(
5000 Symbol_table* symtab,
5002 Target_powerpc<size, big_endian>* target,
5003 Sized_relobj_file<size, big_endian>* object,
5004 unsigned int data_shndx,
5005 Output_section* output_section,
5006 const elfcpp::Rela<size, big_endian>& reloc,
5007 unsigned int r_type,
5010 if (this->maybe_skip_tls_get_addr_call(r_type, gsym) == Track_tls::SKIP)
5013 if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD)
5014 || (size == 32 && r_type == elfcpp::R_PPC_TLSGD))
5016 this->expect_tls_get_addr_call();
5017 const bool final = gsym->final_value_is_known();
5018 const tls::Tls_optimization tls_type = target->optimize_tls_gd(final);
5019 if (tls_type != tls::TLSOPT_NONE)
5020 this->skip_next_tls_get_addr_call();
5022 else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD)
5023 || (size == 32 && r_type == elfcpp::R_PPC_TLSLD))
5025 this->expect_tls_get_addr_call();
5026 const tls::Tls_optimization tls_type = target->optimize_tls_ld();
5027 if (tls_type != tls::TLSOPT_NONE)
5028 this->skip_next_tls_get_addr_call();
5031 Powerpc_relobj<size, big_endian>* ppc_object
5032 = static_cast<Powerpc_relobj<size, big_endian>*>(object);
5034 // A STT_GNU_IFUNC symbol may require a PLT entry.
5035 if (gsym->type() == elfcpp::STT_GNU_IFUNC
5036 && this->reloc_needs_plt_for_ifunc(object, r_type))
5038 target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(),
5039 r_type, elfcpp::elf_r_sym<size>(reloc.get_r_info()),
5040 reloc.get_r_addend());
5041 target->make_plt_entry(symtab, layout, gsym);
5046 case elfcpp::R_POWERPC_NONE:
5047 case elfcpp::R_POWERPC_GNU_VTINHERIT:
5048 case elfcpp::R_POWERPC_GNU_VTENTRY:
5049 case elfcpp::R_PPC_LOCAL24PC:
5050 case elfcpp::R_PPC_EMB_MRKREF:
5051 case elfcpp::R_POWERPC_TLS:
5054 case elfcpp::R_PPC64_TOC:
5056 Output_data_got_powerpc<size, big_endian>* got
5057 = target->got_section(symtab, layout);
5058 if (parameters->options().output_is_position_independent())
5060 Address off = reloc.get_r_offset();
5062 && data_shndx == ppc_object->opd_shndx()
5063 && ppc_object->get_opd_discard(off - 8))
5066 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
5067 Powerpc_relobj<size, big_endian>* symobj = ppc_object;
5068 if (data_shndx != ppc_object->opd_shndx())
5069 symobj = static_cast
5070 <Powerpc_relobj<size, big_endian>*>(gsym->object());
5071 rela_dyn->add_output_section_relative(got->output_section(),
5072 elfcpp::R_POWERPC_RELATIVE,
5074 object, data_shndx, off,
5075 symobj->toc_base_offset());
5080 case elfcpp::R_PPC64_ADDR64:
5082 && data_shndx == ppc_object->opd_shndx()
5083 && (gsym->is_defined_in_discarded_section()
5084 || gsym->object() != object))
5086 ppc_object->set_opd_discard(reloc.get_r_offset());
5090 case elfcpp::R_PPC64_UADDR64:
5091 case elfcpp::R_POWERPC_ADDR32:
5092 case elfcpp::R_POWERPC_UADDR32:
5093 case elfcpp::R_POWERPC_ADDR24:
5094 case elfcpp::R_POWERPC_ADDR16:
5095 case elfcpp::R_POWERPC_ADDR16_LO:
5096 case elfcpp::R_POWERPC_ADDR16_HI:
5097 case elfcpp::R_POWERPC_ADDR16_HA:
5098 case elfcpp::R_POWERPC_UADDR16:
5099 case elfcpp::R_PPC64_ADDR16_HIGHER:
5100 case elfcpp::R_PPC64_ADDR16_HIGHERA:
5101 case elfcpp::R_PPC64_ADDR16_HIGHEST:
5102 case elfcpp::R_PPC64_ADDR16_HIGHESTA:
5103 case elfcpp::R_PPC64_ADDR16_DS:
5104 case elfcpp::R_PPC64_ADDR16_LO_DS:
5105 case elfcpp::R_POWERPC_ADDR14:
5106 case elfcpp::R_POWERPC_ADDR14_BRTAKEN:
5107 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN:
5109 // Make a PLT entry if necessary.
5110 if (gsym->needs_plt_entry())
5112 target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(),
5114 elfcpp::elf_r_sym<size>(reloc.get_r_info()),
5115 reloc.get_r_addend());
5116 target->make_plt_entry(symtab, layout, gsym);
5117 // Since this is not a PC-relative relocation, we may be
5118 // taking the address of a function. In that case we need to
5119 // set the entry in the dynamic symbol table to the address of
5120 // the PLT call stub.
5122 && gsym->is_from_dynobj()
5123 && !parameters->options().output_is_position_independent())
5124 gsym->set_needs_dynsym_value();
5126 // Make a dynamic relocation if necessary.
5127 if (needs_dynamic_reloc<size>(gsym, Scan::get_reference_flags(r_type))
5128 || (size == 64 && gsym->type() == elfcpp::STT_GNU_IFUNC))
5130 if (gsym->may_need_copy_reloc())
5132 target->copy_reloc(symtab, layout, object,
5133 data_shndx, output_section, gsym, reloc);
5135 else if ((size == 32
5136 && r_type == elfcpp::R_POWERPC_ADDR32
5137 && gsym->can_use_relative_reloc(false)
5138 && !(gsym->visibility() == elfcpp::STV_PROTECTED
5139 && parameters->options().shared()))
5141 && r_type == elfcpp::R_PPC64_ADDR64
5142 && (gsym->can_use_relative_reloc(false)
5143 || data_shndx == ppc_object->opd_shndx())))
5145 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
5146 unsigned int dynrel = elfcpp::R_POWERPC_RELATIVE;
5147 if (gsym->type() == elfcpp::STT_GNU_IFUNC)
5149 rela_dyn = target->iplt_section()->rel_plt();
5150 dynrel = elfcpp::R_POWERPC_IRELATIVE;
5152 rela_dyn->add_symbolless_global_addend(
5153 gsym, dynrel, output_section, object, data_shndx,
5154 reloc.get_r_offset(), reloc.get_r_addend());
5158 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
5159 check_non_pic(object, r_type);
5160 rela_dyn->add_global(gsym, r_type, output_section,
5162 reloc.get_r_offset(),
5163 reloc.get_r_addend());
5169 case elfcpp::R_PPC_PLTREL24:
5170 case elfcpp::R_POWERPC_REL24:
5171 target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(),
5172 r_type, elfcpp::elf_r_sym<size>(reloc.get_r_info()),
5173 reloc.get_r_addend());
5174 if (gsym->needs_plt_entry()
5175 || (!gsym->final_value_is_known()
5176 && (gsym->is_undefined()
5177 || gsym->is_from_dynobj()
5178 || gsym->is_preemptible())))
5179 target->make_plt_entry(symtab, layout, gsym);
5182 case elfcpp::R_PPC64_REL64:
5183 case elfcpp::R_POWERPC_REL32:
5184 // Make a dynamic relocation if necessary.
5185 if (needs_dynamic_reloc<size>(gsym, Scan::get_reference_flags(r_type)))
5187 if (gsym->may_need_copy_reloc())
5189 target->copy_reloc(symtab, layout, object,
5190 data_shndx, output_section, gsym,
5195 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
5196 check_non_pic(object, r_type);
5197 rela_dyn->add_global(gsym, r_type, output_section, object,
5198 data_shndx, reloc.get_r_offset(),
5199 reloc.get_r_addend());
5204 case elfcpp::R_POWERPC_REL14:
5205 case elfcpp::R_POWERPC_REL14_BRTAKEN:
5206 case elfcpp::R_POWERPC_REL14_BRNTAKEN:
5207 target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(),
5208 r_type, elfcpp::elf_r_sym<size>(reloc.get_r_info()),
5209 reloc.get_r_addend());
5212 case elfcpp::R_POWERPC_REL16:
5213 case elfcpp::R_POWERPC_REL16_LO:
5214 case elfcpp::R_POWERPC_REL16_HI:
5215 case elfcpp::R_POWERPC_REL16_HA:
5216 case elfcpp::R_POWERPC_SECTOFF:
5217 case elfcpp::R_POWERPC_TPREL16:
5218 case elfcpp::R_POWERPC_DTPREL16:
5219 case elfcpp::R_POWERPC_SECTOFF_LO:
5220 case elfcpp::R_POWERPC_TPREL16_LO:
5221 case elfcpp::R_POWERPC_DTPREL16_LO:
5222 case elfcpp::R_POWERPC_SECTOFF_HI:
5223 case elfcpp::R_POWERPC_TPREL16_HI:
5224 case elfcpp::R_POWERPC_DTPREL16_HI:
5225 case elfcpp::R_POWERPC_SECTOFF_HA:
5226 case elfcpp::R_POWERPC_TPREL16_HA:
5227 case elfcpp::R_POWERPC_DTPREL16_HA:
5228 case elfcpp::R_PPC64_DTPREL16_HIGHER:
5229 case elfcpp::R_PPC64_TPREL16_HIGHER:
5230 case elfcpp::R_PPC64_DTPREL16_HIGHERA:
5231 case elfcpp::R_PPC64_TPREL16_HIGHERA:
5232 case elfcpp::R_PPC64_DTPREL16_HIGHEST:
5233 case elfcpp::R_PPC64_TPREL16_HIGHEST:
5234 case elfcpp::R_PPC64_DTPREL16_HIGHESTA:
5235 case elfcpp::R_PPC64_TPREL16_HIGHESTA:
5236 case elfcpp::R_PPC64_TPREL16_DS:
5237 case elfcpp::R_PPC64_TPREL16_LO_DS:
5238 case elfcpp::R_PPC64_DTPREL16_DS:
5239 case elfcpp::R_PPC64_DTPREL16_LO_DS:
5240 case elfcpp::R_PPC64_SECTOFF_DS:
5241 case elfcpp::R_PPC64_SECTOFF_LO_DS:
5242 case elfcpp::R_PPC64_TLSGD:
5243 case elfcpp::R_PPC64_TLSLD:
5246 case elfcpp::R_POWERPC_GOT16:
5247 case elfcpp::R_POWERPC_GOT16_LO:
5248 case elfcpp::R_POWERPC_GOT16_HI:
5249 case elfcpp::R_POWERPC_GOT16_HA:
5250 case elfcpp::R_PPC64_GOT16_DS:
5251 case elfcpp::R_PPC64_GOT16_LO_DS:
5253 // The symbol requires a GOT entry.
5254 Output_data_got_powerpc<size, big_endian>* got;
5256 got = target->got_section(symtab, layout);
5257 if (gsym->final_value_is_known())
5259 if (size == 32 && gsym->type() == elfcpp::STT_GNU_IFUNC)
5260 got->add_global_plt(gsym, GOT_TYPE_STANDARD);
5262 got->add_global(gsym, GOT_TYPE_STANDARD);
5264 else if (!gsym->has_got_offset(GOT_TYPE_STANDARD))
5266 // If we are generating a shared object or a pie, this
5267 // symbol's GOT entry will be set by a dynamic relocation.
5268 unsigned int off = got->add_constant(0);
5269 gsym->set_got_offset(GOT_TYPE_STANDARD, off);
5271 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
5272 if (gsym->can_use_relative_reloc(false)
5274 && gsym->visibility() == elfcpp::STV_PROTECTED
5275 && parameters->options().shared()))
5277 unsigned int dynrel = elfcpp::R_POWERPC_RELATIVE;
5278 if (gsym->type() == elfcpp::STT_GNU_IFUNC)
5280 rela_dyn = target->iplt_section()->rel_plt();
5281 dynrel = elfcpp::R_POWERPC_IRELATIVE;
5283 rela_dyn->add_global_relative(gsym, dynrel, got, off, 0, false);
5287 unsigned int dynrel = elfcpp::R_POWERPC_GLOB_DAT;
5288 rela_dyn->add_global(gsym, dynrel, got, off, 0);
5294 case elfcpp::R_PPC64_TOC16:
5295 case elfcpp::R_PPC64_TOC16_LO:
5296 case elfcpp::R_PPC64_TOC16_HI:
5297 case elfcpp::R_PPC64_TOC16_HA:
5298 case elfcpp::R_PPC64_TOC16_DS:
5299 case elfcpp::R_PPC64_TOC16_LO_DS:
5300 // We need a GOT section.
5301 target->got_section(symtab, layout);
5304 case elfcpp::R_POWERPC_GOT_TLSGD16:
5305 case elfcpp::R_POWERPC_GOT_TLSGD16_LO:
5306 case elfcpp::R_POWERPC_GOT_TLSGD16_HI:
5307 case elfcpp::R_POWERPC_GOT_TLSGD16_HA:
5309 const bool final = gsym->final_value_is_known();
5310 const tls::Tls_optimization tls_type = target->optimize_tls_gd(final);
5311 if (tls_type == tls::TLSOPT_NONE)
5313 Output_data_got_powerpc<size, big_endian>* got
5314 = target->got_section(symtab, layout);
5315 got->add_global_pair_with_rel(gsym, GOT_TYPE_TLSGD,
5316 target->rela_dyn_section(layout),
5317 elfcpp::R_POWERPC_DTPMOD,
5318 elfcpp::R_POWERPC_DTPREL);
5320 else if (tls_type == tls::TLSOPT_TO_IE)
5322 if (!gsym->has_got_offset(GOT_TYPE_TPREL))
5324 Output_data_got_powerpc<size, big_endian>* got
5325 = target->got_section(symtab, layout);
5326 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
5327 if (gsym->is_undefined()
5328 || gsym->is_from_dynobj())
5330 got->add_global_with_rel(gsym, GOT_TYPE_TPREL, rela_dyn,
5331 elfcpp::R_POWERPC_TPREL);
5335 unsigned int off = got->add_constant(0);
5336 gsym->set_got_offset(GOT_TYPE_TPREL, off);
5337 unsigned int dynrel = elfcpp::R_POWERPC_TPREL;
5338 rela_dyn->add_symbolless_global_addend(gsym, dynrel,
5343 else if (tls_type == tls::TLSOPT_TO_LE)
5345 // no GOT relocs needed for Local Exec.
5352 case elfcpp::R_POWERPC_GOT_TLSLD16:
5353 case elfcpp::R_POWERPC_GOT_TLSLD16_LO:
5354 case elfcpp::R_POWERPC_GOT_TLSLD16_HI:
5355 case elfcpp::R_POWERPC_GOT_TLSLD16_HA:
5357 const tls::Tls_optimization tls_type = target->optimize_tls_ld();
5358 if (tls_type == tls::TLSOPT_NONE)
5359 target->tlsld_got_offset(symtab, layout, object);
5360 else if (tls_type == tls::TLSOPT_TO_LE)
5362 // no GOT relocs needed for Local Exec.
5363 if (parameters->options().emit_relocs())
5365 Output_section* os = layout->tls_segment()->first_section();
5366 gold_assert(os != NULL);
5367 os->set_needs_symtab_index();
5375 case elfcpp::R_POWERPC_GOT_DTPREL16:
5376 case elfcpp::R_POWERPC_GOT_DTPREL16_LO:
5377 case elfcpp::R_POWERPC_GOT_DTPREL16_HI:
5378 case elfcpp::R_POWERPC_GOT_DTPREL16_HA:
5380 Output_data_got_powerpc<size, big_endian>* got
5381 = target->got_section(symtab, layout);
5382 if (!gsym->final_value_is_known()
5383 && (gsym->is_from_dynobj()
5384 || gsym->is_undefined()
5385 || gsym->is_preemptible()))
5386 got->add_global_with_rel(gsym, GOT_TYPE_DTPREL,
5387 target->rela_dyn_section(layout),
5388 elfcpp::R_POWERPC_DTPREL);
5390 got->add_global_tls(gsym, GOT_TYPE_DTPREL);
5394 case elfcpp::R_POWERPC_GOT_TPREL16:
5395 case elfcpp::R_POWERPC_GOT_TPREL16_LO:
5396 case elfcpp::R_POWERPC_GOT_TPREL16_HI:
5397 case elfcpp::R_POWERPC_GOT_TPREL16_HA:
5399 const bool final = gsym->final_value_is_known();
5400 const tls::Tls_optimization tls_type = target->optimize_tls_ie(final);
5401 if (tls_type == tls::TLSOPT_NONE)
5403 if (!gsym->has_got_offset(GOT_TYPE_TPREL))
5405 Output_data_got_powerpc<size, big_endian>* got
5406 = target->got_section(symtab, layout);
5407 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
5408 if (gsym->is_undefined()
5409 || gsym->is_from_dynobj())
5411 got->add_global_with_rel(gsym, GOT_TYPE_TPREL, rela_dyn,
5412 elfcpp::R_POWERPC_TPREL);
5416 unsigned int off = got->add_constant(0);
5417 gsym->set_got_offset(GOT_TYPE_TPREL, off);
5418 unsigned int dynrel = elfcpp::R_POWERPC_TPREL;
5419 rela_dyn->add_symbolless_global_addend(gsym, dynrel,
5424 else if (tls_type == tls::TLSOPT_TO_LE)
5426 // no GOT relocs needed for Local Exec.
5434 unsupported_reloc_global(object, r_type, gsym);
5440 case elfcpp::R_POWERPC_GOT_TLSLD16:
5441 case elfcpp::R_POWERPC_GOT_TLSGD16:
5442 case elfcpp::R_POWERPC_GOT_TPREL16:
5443 case elfcpp::R_POWERPC_GOT_DTPREL16:
5444 case elfcpp::R_POWERPC_GOT16:
5445 case elfcpp::R_PPC64_GOT16_DS:
5446 case elfcpp::R_PPC64_TOC16:
5447 case elfcpp::R_PPC64_TOC16_DS:
5448 ppc_object->set_has_small_toc_reloc();
5454 // Process relocations for gc.
5456 template<int size, bool big_endian>
5458 Target_powerpc<size, big_endian>::gc_process_relocs(
5459 Symbol_table* symtab,
5461 Sized_relobj_file<size, big_endian>* object,
5462 unsigned int data_shndx,
5464 const unsigned char* prelocs,
5466 Output_section* output_section,
5467 bool needs_special_offset_handling,
5468 size_t local_symbol_count,
5469 const unsigned char* plocal_symbols)
5471 typedef Target_powerpc<size, big_endian> Powerpc;
5472 typedef typename Target_powerpc<size, big_endian>::Scan Scan;
5473 Powerpc_relobj<size, big_endian>* ppc_object
5474 = static_cast<Powerpc_relobj<size, big_endian>*>(object);
5476 ppc_object->set_opd_valid();
5477 if (size == 64 && data_shndx == ppc_object->opd_shndx())
5479 typename Powerpc_relobj<size, big_endian>::Access_from::iterator p;
5480 for (p = ppc_object->access_from_map()->begin();
5481 p != ppc_object->access_from_map()->end();
5484 Address dst_off = p->first;
5485 unsigned int dst_indx = ppc_object->get_opd_ent(dst_off);
5486 typename Powerpc_relobj<size, big_endian>::Section_refs::iterator s;
5487 for (s = p->second.begin(); s != p->second.end(); ++s)
5489 Object* src_obj = s->first;
5490 unsigned int src_indx = s->second;
5491 symtab->gc()->add_reference(src_obj, src_indx,
5492 ppc_object, dst_indx);
5496 ppc_object->access_from_map()->clear();
5497 ppc_object->process_gc_mark(symtab);
5498 // Don't look at .opd relocs as .opd will reference everything.
5502 gold::gc_process_relocs<size, big_endian, Powerpc, elfcpp::SHT_RELA, Scan,
5503 typename Target_powerpc::Relocatable_size_for_reloc>(
5512 needs_special_offset_handling,
5517 // Handle target specific gc actions when adding a gc reference from
5518 // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX
5519 // and DST_OFF. For powerpc64, this adds a referenc to the code
5520 // section of a function descriptor.
5522 template<int size, bool big_endian>
5524 Target_powerpc<size, big_endian>::do_gc_add_reference(
5525 Symbol_table* symtab,
5527 unsigned int src_shndx,
5529 unsigned int dst_shndx,
5530 Address dst_off) const
5532 if (size != 64 || dst_obj->is_dynamic())
5535 Powerpc_relobj<size, big_endian>* ppc_object
5536 = static_cast<Powerpc_relobj<size, big_endian>*>(dst_obj);
5537 if (dst_shndx == ppc_object->opd_shndx())
5539 if (ppc_object->opd_valid())
5541 dst_shndx = ppc_object->get_opd_ent(dst_off);
5542 symtab->gc()->add_reference(src_obj, src_shndx, dst_obj, dst_shndx);
5546 // If we haven't run scan_opd_relocs, we must delay
5547 // processing this function descriptor reference.
5548 ppc_object->add_reference(src_obj, src_shndx, dst_off);
5553 // Add any special sections for this symbol to the gc work list.
5554 // For powerpc64, this adds the code section of a function
5557 template<int size, bool big_endian>
5559 Target_powerpc<size, big_endian>::do_gc_mark_symbol(
5560 Symbol_table* symtab,
5565 Powerpc_relobj<size, big_endian>* ppc_object
5566 = static_cast<Powerpc_relobj<size, big_endian>*>(sym->object());
5568 unsigned int shndx = sym->shndx(&is_ordinary);
5569 if (is_ordinary && shndx == ppc_object->opd_shndx())
5571 Sized_symbol<size>* gsym = symtab->get_sized_symbol<size>(sym);
5572 Address dst_off = gsym->value();
5573 if (ppc_object->opd_valid())
5575 unsigned int dst_indx = ppc_object->get_opd_ent(dst_off);
5576 symtab->gc()->worklist().push(Section_id(ppc_object, dst_indx));
5579 ppc_object->add_gc_mark(dst_off);
5584 // Scan relocations for a section.
5586 template<int size, bool big_endian>
5588 Target_powerpc<size, big_endian>::scan_relocs(
5589 Symbol_table* symtab,
5591 Sized_relobj_file<size, big_endian>* object,
5592 unsigned int data_shndx,
5593 unsigned int sh_type,
5594 const unsigned char* prelocs,
5596 Output_section* output_section,
5597 bool needs_special_offset_handling,
5598 size_t local_symbol_count,
5599 const unsigned char* plocal_symbols)
5601 typedef Target_powerpc<size, big_endian> Powerpc;
5602 typedef typename Target_powerpc<size, big_endian>::Scan Scan;
5604 if (sh_type == elfcpp::SHT_REL)
5606 gold_error(_("%s: unsupported REL reloc section"),
5607 object->name().c_str());
5611 gold::scan_relocs<size, big_endian, Powerpc, elfcpp::SHT_RELA, Scan>(
5620 needs_special_offset_handling,
5625 // Functor class for processing the global symbol table.
5626 // Removes symbols defined on discarded opd entries.
5628 template<bool big_endian>
5629 class Global_symbol_visitor_opd
5632 Global_symbol_visitor_opd()
5636 operator()(Sized_symbol<64>* sym)
5638 if (sym->has_symtab_index()
5639 || sym->source() != Symbol::FROM_OBJECT
5640 || !sym->in_real_elf())
5643 if (sym->object()->is_dynamic())
5646 Powerpc_relobj<64, big_endian>* symobj
5647 = static_cast<Powerpc_relobj<64, big_endian>*>(sym->object());
5648 if (symobj->opd_shndx() == 0)
5652 unsigned int shndx = sym->shndx(&is_ordinary);
5653 if (shndx == symobj->opd_shndx()
5654 && symobj->get_opd_discard(sym->value()))
5655 sym->set_symtab_index(-1U);
5659 template<int size, bool big_endian>
5661 Target_powerpc<size, big_endian>::define_save_restore_funcs(
5663 Symbol_table* symtab)
5667 Output_data_save_res<64, big_endian>* savres
5668 = new Output_data_save_res<64, big_endian>(symtab);
5669 layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS,
5670 elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR,
5671 savres, ORDER_TEXT, false);
5675 // Sort linker created .got section first (for the header), then input
5676 // sections belonging to files using small model code.
5678 template<bool big_endian>
5679 class Sort_toc_sections
5683 operator()(const Output_section::Input_section& is1,
5684 const Output_section::Input_section& is2) const
5686 if (!is1.is_input_section() && is2.is_input_section())
5689 = (is1.is_input_section()
5690 && (static_cast<const Powerpc_relobj<64, big_endian>*>(is1.relobj())
5691 ->has_small_toc_reloc()));
5693 = (is2.is_input_section()
5694 && (static_cast<const Powerpc_relobj<64, big_endian>*>(is2.relobj())
5695 ->has_small_toc_reloc()));
5696 return small1 && !small2;
5700 // Finalize the sections.
5702 template<int size, bool big_endian>
5704 Target_powerpc<size, big_endian>::do_finalize_sections(
5706 const Input_objects*,
5707 Symbol_table* symtab)
5709 if (parameters->doing_static_link())
5711 // At least some versions of glibc elf-init.o have a strong
5712 // reference to __rela_iplt marker syms. A weak ref would be
5714 if (this->iplt_ != NULL)
5716 Reloc_section* rel = this->iplt_->rel_plt();
5717 symtab->define_in_output_data("__rela_iplt_start", NULL,
5718 Symbol_table::PREDEFINED, rel, 0, 0,
5719 elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL,
5720 elfcpp::STV_HIDDEN, 0, false, true);
5721 symtab->define_in_output_data("__rela_iplt_end", NULL,
5722 Symbol_table::PREDEFINED, rel, 0, 0,
5723 elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL,
5724 elfcpp::STV_HIDDEN, 0, true, true);
5728 symtab->define_as_constant("__rela_iplt_start", NULL,
5729 Symbol_table::PREDEFINED, 0, 0,
5730 elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL,
5731 elfcpp::STV_HIDDEN, 0, true, false);
5732 symtab->define_as_constant("__rela_iplt_end", NULL,
5733 Symbol_table::PREDEFINED, 0, 0,
5734 elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL,
5735 elfcpp::STV_HIDDEN, 0, true, false);
5741 typedef Global_symbol_visitor_opd<big_endian> Symbol_visitor;
5742 symtab->for_all_symbols<64, Symbol_visitor>(Symbol_visitor());
5744 if (!parameters->options().relocatable())
5746 this->define_save_restore_funcs(layout, symtab);
5748 // Annoyingly, we need to make these sections now whether or
5749 // not we need them. If we delay until do_relax then we
5750 // need to mess with the relaxation machinery checkpointing.
5751 this->got_section(symtab, layout);
5752 this->make_brlt_section(layout);
5754 if (parameters->options().toc_sort())
5756 Output_section* os = this->got_->output_section();
5757 if (os != NULL && os->input_sections().size() > 1)
5758 std::stable_sort(os->input_sections().begin(),
5759 os->input_sections().end(),
5760 Sort_toc_sections<big_endian>());
5765 // Fill in some more dynamic tags.
5766 Output_data_dynamic* odyn = layout->dynamic_data();
5769 const Reloc_section* rel_plt = (this->plt_ == NULL
5771 : this->plt_->rel_plt());
5772 layout->add_target_dynamic_tags(false, this->plt_, rel_plt,
5773 this->rela_dyn_, true, size == 32);
5777 if (this->got_ != NULL)
5779 this->got_->finalize_data_size();
5780 odyn->add_section_plus_offset(elfcpp::DT_PPC_GOT,
5781 this->got_, this->got_->g_o_t());
5786 if (this->glink_ != NULL)
5788 this->glink_->finalize_data_size();
5789 odyn->add_section_plus_offset(elfcpp::DT_PPC64_GLINK,
5791 (this->glink_->pltresolve_size
5797 // Emit any relocs we saved in an attempt to avoid generating COPY
5799 if (this->copy_relocs_.any_saved_relocs())
5800 this->copy_relocs_.emit(this->rela_dyn_section(layout));
5803 // Return TRUE iff INSN is one we expect on a _LO variety toc/got
5807 ok_lo_toc_insn(uint32_t insn)
5809 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
5810 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
5811 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
5812 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
5813 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
5814 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
5815 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
5816 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
5817 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
5818 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
5819 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
5820 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
5821 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
5822 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
5823 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
5825 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
5826 && ((insn & 3) == 0 || (insn & 3) == 3))
5827 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
5830 // Return the value to use for a branch relocation.
5832 template<int size, bool big_endian>
5833 typename Target_powerpc<size, big_endian>::Address
5834 Target_powerpc<size, big_endian>::symval_for_branch(
5835 const Symbol_table* symtab,
5837 const Sized_symbol<size>* gsym,
5838 Powerpc_relobj<size, big_endian>* object,
5839 unsigned int *dest_shndx)
5845 // If the symbol is defined in an opd section, ie. is a function
5846 // descriptor, use the function descriptor code entry address
5847 Powerpc_relobj<size, big_endian>* symobj = object;
5849 && gsym->source() != Symbol::FROM_OBJECT)
5852 symobj = static_cast<Powerpc_relobj<size, big_endian>*>(gsym->object());
5853 unsigned int shndx = symobj->opd_shndx();
5856 Address opd_addr = symobj->get_output_section_offset(shndx);
5857 gold_assert(opd_addr != invalid_address);
5858 opd_addr += symobj->output_section(shndx)->address();
5859 if (value >= opd_addr && value < opd_addr + symobj->section_size(shndx))
5862 *dest_shndx = symobj->get_opd_ent(value - opd_addr, &sec_off);
5863 if (symtab->is_section_folded(symobj, *dest_shndx))
5866 = symtab->icf()->get_folded_section(symobj, *dest_shndx);
5867 symobj = static_cast<Powerpc_relobj<size, big_endian>*>(folded.first);
5868 *dest_shndx = folded.second;
5870 Address sec_addr = symobj->get_output_section_offset(*dest_shndx);
5871 gold_assert(sec_addr != invalid_address);
5872 sec_addr += symobj->output_section(*dest_shndx)->address();
5873 value = sec_addr + sec_off;
5878 // Perform a relocation.
5880 template<int size, bool big_endian>
5882 Target_powerpc<size, big_endian>::Relocate::relocate(
5883 const Relocate_info<size, big_endian>* relinfo,
5884 Target_powerpc* target,
5887 const elfcpp::Rela<size, big_endian>& rela,
5888 unsigned int r_type,
5889 const Sized_symbol<size>* gsym,
5890 const Symbol_value<size>* psymval,
5891 unsigned char* view,
5893 section_size_type view_size)
5895 switch (this->maybe_skip_tls_get_addr_call(r_type, gsym))
5897 case Track_tls::NOT_EXPECTED:
5898 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
5899 _("__tls_get_addr call lacks marker reloc"));
5901 case Track_tls::EXPECTED:
5902 // We have already complained.
5904 case Track_tls::SKIP:
5906 case Track_tls::NORMAL:
5910 typedef Powerpc_relocate_functions<size, big_endian> Reloc;
5911 typedef typename elfcpp::Swap<32, big_endian>::Valtype Insn;
5912 Powerpc_relobj<size, big_endian>* const object
5913 = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object);
5915 bool has_plt_value = false;
5916 unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
5918 ? use_plt_offset<size>(gsym, Scan::get_reference_flags(r_type))
5919 : object->local_has_plt_offset(r_sym))
5921 Stub_table<size, big_endian>* stub_table
5922 = object->stub_table(relinfo->data_shndx);
5923 if (stub_table == NULL)
5925 // This is a ref from a data section to an ifunc symbol.
5926 if (target->stub_tables().size() != 0)
5927 stub_table = target->stub_tables()[0];
5929 gold_assert(stub_table != NULL);
5932 off = stub_table->find_plt_call_entry(object, gsym, r_type,
5933 rela.get_r_addend());
5935 off = stub_table->find_plt_call_entry(object, r_sym, r_type,
5936 rela.get_r_addend());
5937 gold_assert(off != invalid_address);
5938 value = stub_table->stub_address() + off;
5939 has_plt_value = true;
5942 if (r_type == elfcpp::R_POWERPC_GOT16
5943 || r_type == elfcpp::R_POWERPC_GOT16_LO
5944 || r_type == elfcpp::R_POWERPC_GOT16_HI
5945 || r_type == elfcpp::R_POWERPC_GOT16_HA
5946 || r_type == elfcpp::R_PPC64_GOT16_DS
5947 || r_type == elfcpp::R_PPC64_GOT16_LO_DS)
5951 gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD));
5952 value = gsym->got_offset(GOT_TYPE_STANDARD);
5956 unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
5957 gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD));
5958 value = object->local_got_offset(r_sym, GOT_TYPE_STANDARD);
5960 value -= target->got_section()->got_base_offset(object);
5962 else if (r_type == elfcpp::R_PPC64_TOC)
5964 value = (target->got_section()->output_section()->address()
5965 + object->toc_base_offset());
5967 else if (gsym != NULL
5968 && (r_type == elfcpp::R_POWERPC_REL24
5969 || r_type == elfcpp::R_PPC_PLTREL24)
5974 typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype;
5975 Valtype* wv = reinterpret_cast<Valtype*>(view);
5976 bool can_plt_call = false;
5977 if (rela.get_r_offset() + 8 <= view_size)
5979 Valtype insn = elfcpp::Swap<32, big_endian>::readval(wv);
5980 Valtype insn2 = elfcpp::Swap<32, big_endian>::readval(wv + 1);
5983 || insn2 == cror_15_15_15 || insn2 == cror_31_31_31))
5985 elfcpp::Swap<32, big_endian>::writeval(wv + 1, ld_2_1 + 40);
5986 can_plt_call = true;
5991 // If we don't have a branch and link followed by a nop,
5992 // we can't go via the plt because there is no place to
5993 // put a toc restoring instruction.
5994 // Unless we know we won't be returning.
5995 if (strcmp(gsym->name(), "__libc_start_main") == 0)
5996 can_plt_call = true;
6000 // This is not an error in one special case: A self
6001 // call. It isn't possible to cheaply verify we have
6002 // such a call so just check for a call to the same
6005 Address code = value;
6006 if (gsym->source() == Symbol::FROM_OBJECT
6007 && gsym->object() == object)
6009 Address addend = rela.get_r_addend();
6010 unsigned int dest_shndx;
6011 Address opdent = psymval->value(object, addend);
6012 code = target->symval_for_branch(relinfo->symtab, opdent,
6013 gsym, object, &dest_shndx);
6015 if (dest_shndx == 0)
6016 dest_shndx = gsym->shndx(&is_ordinary);
6017 ok = dest_shndx == relinfo->data_shndx;
6021 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
6022 _("call lacks nop, can't restore toc; "
6023 "recompile with -fPIC"));
6029 else if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16
6030 || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO
6031 || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI
6032 || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA)
6034 // First instruction of a global dynamic sequence, arg setup insn.
6035 const bool final = gsym == NULL || gsym->final_value_is_known();
6036 const tls::Tls_optimization tls_type = target->optimize_tls_gd(final);
6037 enum Got_type got_type = GOT_TYPE_STANDARD;
6038 if (tls_type == tls::TLSOPT_NONE)
6039 got_type = GOT_TYPE_TLSGD;
6040 else if (tls_type == tls::TLSOPT_TO_IE)
6041 got_type = GOT_TYPE_TPREL;
6042 if (got_type != GOT_TYPE_STANDARD)
6046 gold_assert(gsym->has_got_offset(got_type));
6047 value = gsym->got_offset(got_type);
6051 unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
6052 gold_assert(object->local_has_got_offset(r_sym, got_type));
6053 value = object->local_got_offset(r_sym, got_type);
6055 value -= target->got_section()->got_base_offset(object);
6057 if (tls_type == tls::TLSOPT_TO_IE)
6059 if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16
6060 || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO)
6062 Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian);
6063 Insn insn = elfcpp::Swap<32, big_endian>::readval(iview);
6064 insn &= (1 << 26) - (1 << 16); // extract rt,ra from addi
6066 insn |= 32 << 26; // lwz
6068 insn |= 58 << 26; // ld
6069 elfcpp::Swap<32, big_endian>::writeval(iview, insn);
6071 r_type += (elfcpp::R_POWERPC_GOT_TPREL16
6072 - elfcpp::R_POWERPC_GOT_TLSGD16);
6074 else if (tls_type == tls::TLSOPT_TO_LE)
6076 if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16
6077 || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO)
6079 Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian);
6080 Insn insn = addis_3_13;
6083 elfcpp::Swap<32, big_endian>::writeval(iview, insn);
6084 r_type = elfcpp::R_POWERPC_TPREL16_HA;
6085 value = psymval->value(object, rela.get_r_addend());
6089 Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian);
6091 elfcpp::Swap<32, big_endian>::writeval(iview, insn);
6092 r_type = elfcpp::R_POWERPC_NONE;
6096 else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16
6097 || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO
6098 || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI
6099 || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA)
6101 // First instruction of a local dynamic sequence, arg setup insn.
6102 const tls::Tls_optimization tls_type = target->optimize_tls_ld();
6103 if (tls_type == tls::TLSOPT_NONE)
6105 value = target->tlsld_got_offset();
6106 value -= target->got_section()->got_base_offset(object);
6110 gold_assert(tls_type == tls::TLSOPT_TO_LE);
6111 if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16
6112 || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO)
6114 Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian);
6115 Insn insn = addis_3_13;
6118 elfcpp::Swap<32, big_endian>::writeval(iview, insn);
6119 r_type = elfcpp::R_POWERPC_TPREL16_HA;
6124 Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian);
6126 elfcpp::Swap<32, big_endian>::writeval(iview, insn);
6127 r_type = elfcpp::R_POWERPC_NONE;
6131 else if (r_type == elfcpp::R_POWERPC_GOT_DTPREL16
6132 || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_LO
6133 || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HI
6134 || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HA)
6136 // Accesses relative to a local dynamic sequence address,
6137 // no optimisation here.
6140 gold_assert(gsym->has_got_offset(GOT_TYPE_DTPREL));
6141 value = gsym->got_offset(GOT_TYPE_DTPREL);
6145 unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
6146 gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_DTPREL));
6147 value = object->local_got_offset(r_sym, GOT_TYPE_DTPREL);
6149 value -= target->got_section()->got_base_offset(object);
6151 else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16
6152 || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO
6153 || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI
6154 || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA)
6156 // First instruction of initial exec sequence.
6157 const bool final = gsym == NULL || gsym->final_value_is_known();
6158 const tls::Tls_optimization tls_type = target->optimize_tls_ie(final);
6159 if (tls_type == tls::TLSOPT_NONE)
6163 gold_assert(gsym->has_got_offset(GOT_TYPE_TPREL));
6164 value = gsym->got_offset(GOT_TYPE_TPREL);
6168 unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
6169 gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_TPREL));
6170 value = object->local_got_offset(r_sym, GOT_TYPE_TPREL);
6172 value -= target->got_section()->got_base_offset(object);
6176 gold_assert(tls_type == tls::TLSOPT_TO_LE);
6177 if (r_type == elfcpp::R_POWERPC_GOT_TPREL16
6178 || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO)
6180 Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian);
6181 Insn insn = elfcpp::Swap<32, big_endian>::readval(iview);
6182 insn &= (1 << 26) - (1 << 21); // extract rt from ld
6187 elfcpp::Swap<32, big_endian>::writeval(iview, insn);
6188 r_type = elfcpp::R_POWERPC_TPREL16_HA;
6189 value = psymval->value(object, rela.get_r_addend());
6193 Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian);
6195 elfcpp::Swap<32, big_endian>::writeval(iview, insn);
6196 r_type = elfcpp::R_POWERPC_NONE;
6200 else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD)
6201 || (size == 32 && r_type == elfcpp::R_PPC_TLSGD))
6203 // Second instruction of a global dynamic sequence,
6204 // the __tls_get_addr call
6205 this->expect_tls_get_addr_call(relinfo, relnum, rela.get_r_offset());
6206 const bool final = gsym == NULL || gsym->final_value_is_known();
6207 const tls::Tls_optimization tls_type = target->optimize_tls_gd(final);
6208 if (tls_type != tls::TLSOPT_NONE)
6210 if (tls_type == tls::TLSOPT_TO_IE)
6212 Insn* iview = reinterpret_cast<Insn*>(view);
6213 Insn insn = add_3_3_13;
6216 elfcpp::Swap<32, big_endian>::writeval(iview, insn);
6217 r_type = elfcpp::R_POWERPC_NONE;
6221 Insn* iview = reinterpret_cast<Insn*>(view);
6222 Insn insn = addi_3_3;
6223 elfcpp::Swap<32, big_endian>::writeval(iview, insn);
6224 r_type = elfcpp::R_POWERPC_TPREL16_LO;
6225 view += 2 * big_endian;
6226 value = psymval->value(object, rela.get_r_addend());
6228 this->skip_next_tls_get_addr_call();
6231 else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD)
6232 || (size == 32 && r_type == elfcpp::R_PPC_TLSLD))
6234 // Second instruction of a local dynamic sequence,
6235 // the __tls_get_addr call
6236 this->expect_tls_get_addr_call(relinfo, relnum, rela.get_r_offset());
6237 const tls::Tls_optimization tls_type = target->optimize_tls_ld();
6238 if (tls_type == tls::TLSOPT_TO_LE)
6240 Insn* iview = reinterpret_cast<Insn*>(view);
6241 Insn insn = addi_3_3;
6242 elfcpp::Swap<32, big_endian>::writeval(iview, insn);
6243 this->skip_next_tls_get_addr_call();
6244 r_type = elfcpp::R_POWERPC_TPREL16_LO;
6245 view += 2 * big_endian;
6249 else if (r_type == elfcpp::R_POWERPC_TLS)
6251 // Second instruction of an initial exec sequence
6252 const bool final = gsym == NULL || gsym->final_value_is_known();
6253 const tls::Tls_optimization tls_type = target->optimize_tls_ie(final);
6254 if (tls_type == tls::TLSOPT_TO_LE)
6256 Insn* iview = reinterpret_cast<Insn*>(view);
6257 Insn insn = elfcpp::Swap<32, big_endian>::readval(iview);
6258 unsigned int reg = size == 32 ? 2 : 13;
6259 insn = at_tls_transform(insn, reg);
6260 gold_assert(insn != 0);
6261 elfcpp::Swap<32, big_endian>::writeval(iview, insn);
6262 r_type = elfcpp::R_POWERPC_TPREL16_LO;
6263 view += 2 * big_endian;
6264 value = psymval->value(object, rela.get_r_addend());
6267 else if (!has_plt_value)
6270 unsigned int dest_shndx;
6271 if (r_type != elfcpp::R_PPC_PLTREL24)
6272 addend = rela.get_r_addend();
6273 value = psymval->value(object, addend);
6274 if (size == 64 && is_branch_reloc(r_type))
6275 value = target->symval_for_branch(relinfo->symtab, value,
6276 gsym, object, &dest_shndx);
6277 unsigned int max_branch_offset = 0;
6278 if (r_type == elfcpp::R_POWERPC_REL24
6279 || r_type == elfcpp::R_PPC_PLTREL24
6280 || r_type == elfcpp::R_PPC_LOCAL24PC)
6281 max_branch_offset = 1 << 25;
6282 else if (r_type == elfcpp::R_POWERPC_REL14
6283 || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN
6284 || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN)
6285 max_branch_offset = 1 << 15;
6286 if (max_branch_offset != 0
6287 && value - address + max_branch_offset >= 2 * max_branch_offset)
6289 Stub_table<size, big_endian>* stub_table
6290 = object->stub_table(relinfo->data_shndx);
6291 gold_assert(stub_table != NULL);
6292 Address off = stub_table->find_long_branch_entry(object, value);
6293 if (off != invalid_address)
6294 value = stub_table->stub_address() + stub_table->plt_size() + off;
6300 case elfcpp::R_PPC64_REL64:
6301 case elfcpp::R_POWERPC_REL32:
6302 case elfcpp::R_POWERPC_REL24:
6303 case elfcpp::R_PPC_PLTREL24:
6304 case elfcpp::R_PPC_LOCAL24PC:
6305 case elfcpp::R_POWERPC_REL16:
6306 case elfcpp::R_POWERPC_REL16_LO:
6307 case elfcpp::R_POWERPC_REL16_HI:
6308 case elfcpp::R_POWERPC_REL16_HA:
6309 case elfcpp::R_POWERPC_REL14:
6310 case elfcpp::R_POWERPC_REL14_BRTAKEN:
6311 case elfcpp::R_POWERPC_REL14_BRNTAKEN:
6315 case elfcpp::R_PPC64_TOC16:
6316 case elfcpp::R_PPC64_TOC16_LO:
6317 case elfcpp::R_PPC64_TOC16_HI:
6318 case elfcpp::R_PPC64_TOC16_HA:
6319 case elfcpp::R_PPC64_TOC16_DS:
6320 case elfcpp::R_PPC64_TOC16_LO_DS:
6321 // Subtract the TOC base address.
6322 value -= (target->got_section()->output_section()->address()
6323 + object->toc_base_offset());
6326 case elfcpp::R_POWERPC_SECTOFF:
6327 case elfcpp::R_POWERPC_SECTOFF_LO:
6328 case elfcpp::R_POWERPC_SECTOFF_HI:
6329 case elfcpp::R_POWERPC_SECTOFF_HA:
6330 case elfcpp::R_PPC64_SECTOFF_DS:
6331 case elfcpp::R_PPC64_SECTOFF_LO_DS:
6333 value -= os->address();
6336 case elfcpp::R_PPC64_TPREL16_DS:
6337 case elfcpp::R_PPC64_TPREL16_LO_DS:
6339 // R_PPC_TLSGD and R_PPC_TLSLD
6341 case elfcpp::R_POWERPC_TPREL16:
6342 case elfcpp::R_POWERPC_TPREL16_LO:
6343 case elfcpp::R_POWERPC_TPREL16_HI:
6344 case elfcpp::R_POWERPC_TPREL16_HA:
6345 case elfcpp::R_POWERPC_TPREL:
6346 case elfcpp::R_PPC64_TPREL16_HIGHER:
6347 case elfcpp::R_PPC64_TPREL16_HIGHERA:
6348 case elfcpp::R_PPC64_TPREL16_HIGHEST:
6349 case elfcpp::R_PPC64_TPREL16_HIGHESTA:
6350 // tls symbol values are relative to tls_segment()->vaddr()
6354 case elfcpp::R_PPC64_DTPREL16_DS:
6355 case elfcpp::R_PPC64_DTPREL16_LO_DS:
6356 case elfcpp::R_PPC64_DTPREL16_HIGHER:
6357 case elfcpp::R_PPC64_DTPREL16_HIGHERA:
6358 case elfcpp::R_PPC64_DTPREL16_HIGHEST:
6359 case elfcpp::R_PPC64_DTPREL16_HIGHESTA:
6361 // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO
6362 // R_PPC_EMB_NADDR16_HI, R_PPC_EMB_NADDR16_HA, R_PPC_EMB_SDAI16
6364 case elfcpp::R_POWERPC_DTPREL16:
6365 case elfcpp::R_POWERPC_DTPREL16_LO:
6366 case elfcpp::R_POWERPC_DTPREL16_HI:
6367 case elfcpp::R_POWERPC_DTPREL16_HA:
6368 case elfcpp::R_POWERPC_DTPREL:
6369 // tls symbol values are relative to tls_segment()->vaddr()
6370 value -= dtp_offset;
6377 Insn branch_bit = 0;
6380 case elfcpp::R_POWERPC_ADDR14_BRTAKEN:
6381 case elfcpp::R_POWERPC_REL14_BRTAKEN:
6382 branch_bit = 1 << 21;
6383 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN:
6384 case elfcpp::R_POWERPC_REL14_BRNTAKEN:
6386 Insn* iview = reinterpret_cast<Insn*>(view);
6387 Insn insn = elfcpp::Swap<32, big_endian>::readval(iview);
6390 if (this->is_isa_v2)
6392 // Set 'a' bit. This is 0b00010 in BO field for branch
6393 // on CR(BI) insns (BO == 001at or 011at), and 0b01000
6394 // for branch on CTR insns (BO == 1a00t or 1a01t).
6395 if ((insn & (0x14 << 21)) == (0x04 << 21))
6397 else if ((insn & (0x14 << 21)) == (0x10 << 21))
6404 // Invert 'y' bit if not the default.
6405 if (static_cast<Signed_address>(value) < 0)
6408 elfcpp::Swap<32, big_endian>::writeval(iview, insn);
6418 // Multi-instruction sequences that access the TOC can be
6419 // optimized, eg. addis ra,r2,0; addi rb,ra,x;
6420 // to nop; addi rb,r2,x;
6426 case elfcpp::R_POWERPC_GOT_TLSLD16_HA:
6427 case elfcpp::R_POWERPC_GOT_TLSGD16_HA:
6428 case elfcpp::R_POWERPC_GOT_TPREL16_HA:
6429 case elfcpp::R_POWERPC_GOT_DTPREL16_HA:
6430 case elfcpp::R_POWERPC_GOT16_HA:
6431 case elfcpp::R_PPC64_TOC16_HA:
6432 if (parameters->options().toc_optimize())
6434 Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian);
6435 Insn insn = elfcpp::Swap<32, big_endian>::readval(iview);
6436 if ((insn & ((0x3f << 26) | 0x1f << 16))
6437 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
6438 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
6439 _("toc optimization is not supported "
6440 "for %#08x instruction"), insn);
6441 else if (value + 0x8000 < 0x10000)
6443 elfcpp::Swap<32, big_endian>::writeval(iview, nop);
6449 case elfcpp::R_POWERPC_GOT_TLSLD16_LO:
6450 case elfcpp::R_POWERPC_GOT_TLSGD16_LO:
6451 case elfcpp::R_POWERPC_GOT_TPREL16_LO:
6452 case elfcpp::R_POWERPC_GOT_DTPREL16_LO:
6453 case elfcpp::R_POWERPC_GOT16_LO:
6454 case elfcpp::R_PPC64_GOT16_LO_DS:
6455 case elfcpp::R_PPC64_TOC16_LO:
6456 case elfcpp::R_PPC64_TOC16_LO_DS:
6457 if (parameters->options().toc_optimize())
6459 Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian);
6460 Insn insn = elfcpp::Swap<32, big_endian>::readval(iview);
6461 if (!ok_lo_toc_insn(insn))
6462 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
6463 _("toc optimization is not supported "
6464 "for %#08x instruction"), insn);
6465 else if (value + 0x8000 < 0x10000)
6467 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
6469 // Transform addic to addi when we change reg.
6470 insn &= ~((0x3f << 26) | (0x1f << 16));
6471 insn |= (14u << 26) | (2 << 16);
6475 insn &= ~(0x1f << 16);
6478 elfcpp::Swap<32, big_endian>::writeval(iview, insn);
6485 typename Reloc::Overflow_check overflow = Reloc::CHECK_NONE;
6488 case elfcpp::R_POWERPC_ADDR32:
6489 case elfcpp::R_POWERPC_UADDR32:
6491 overflow = Reloc::CHECK_BITFIELD;
6494 case elfcpp::R_POWERPC_REL32:
6496 overflow = Reloc::CHECK_SIGNED;
6499 case elfcpp::R_POWERPC_ADDR24:
6500 case elfcpp::R_POWERPC_ADDR16:
6501 case elfcpp::R_POWERPC_UADDR16:
6502 case elfcpp::R_PPC64_ADDR16_DS:
6503 case elfcpp::R_POWERPC_ADDR14:
6504 case elfcpp::R_POWERPC_ADDR14_BRTAKEN:
6505 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN:
6506 overflow = Reloc::CHECK_BITFIELD;
6509 case elfcpp::R_POWERPC_REL24:
6510 case elfcpp::R_PPC_PLTREL24:
6511 case elfcpp::R_PPC_LOCAL24PC:
6512 case elfcpp::R_POWERPC_REL16:
6513 case elfcpp::R_PPC64_TOC16:
6514 case elfcpp::R_POWERPC_GOT16:
6515 case elfcpp::R_POWERPC_SECTOFF:
6516 case elfcpp::R_POWERPC_TPREL16:
6517 case elfcpp::R_POWERPC_DTPREL16:
6518 case elfcpp::R_PPC64_TPREL16_DS:
6519 case elfcpp::R_PPC64_DTPREL16_DS:
6520 case elfcpp::R_PPC64_TOC16_DS:
6521 case elfcpp::R_PPC64_GOT16_DS:
6522 case elfcpp::R_PPC64_SECTOFF_DS:
6523 case elfcpp::R_POWERPC_REL14:
6524 case elfcpp::R_POWERPC_REL14_BRTAKEN:
6525 case elfcpp::R_POWERPC_REL14_BRNTAKEN:
6526 case elfcpp::R_POWERPC_GOT_TLSGD16:
6527 case elfcpp::R_POWERPC_GOT_TLSLD16:
6528 case elfcpp::R_POWERPC_GOT_TPREL16:
6529 case elfcpp::R_POWERPC_GOT_DTPREL16:
6530 overflow = Reloc::CHECK_SIGNED;
6534 typename Powerpc_relocate_functions<size, big_endian>::Status status
6535 = Powerpc_relocate_functions<size, big_endian>::STATUS_OK;
6538 case elfcpp::R_POWERPC_NONE:
6539 case elfcpp::R_POWERPC_TLS:
6540 case elfcpp::R_POWERPC_GNU_VTINHERIT:
6541 case elfcpp::R_POWERPC_GNU_VTENTRY:
6542 case elfcpp::R_PPC_EMB_MRKREF:
6545 case elfcpp::R_PPC64_ADDR64:
6546 case elfcpp::R_PPC64_REL64:
6547 case elfcpp::R_PPC64_TOC:
6548 Reloc::addr64(view, value);
6551 case elfcpp::R_POWERPC_TPREL:
6552 case elfcpp::R_POWERPC_DTPREL:
6554 Reloc::addr64(view, value);
6556 status = Reloc::addr32(view, value, overflow);
6559 case elfcpp::R_PPC64_UADDR64:
6560 Reloc::addr64_u(view, value);
6563 case elfcpp::R_POWERPC_ADDR32:
6564 status = Reloc::addr32(view, value, overflow);
6567 case elfcpp::R_POWERPC_REL32:
6568 case elfcpp::R_POWERPC_UADDR32:
6569 status = Reloc::addr32_u(view, value, overflow);
6572 case elfcpp::R_POWERPC_ADDR24:
6573 case elfcpp::R_POWERPC_REL24:
6574 case elfcpp::R_PPC_PLTREL24:
6575 case elfcpp::R_PPC_LOCAL24PC:
6576 status = Reloc::addr24(view, value, overflow);
6579 case elfcpp::R_POWERPC_GOT_DTPREL16:
6580 case elfcpp::R_POWERPC_GOT_DTPREL16_LO:
6583 status = Reloc::addr16_ds(view, value, overflow);
6586 case elfcpp::R_POWERPC_ADDR16:
6587 case elfcpp::R_POWERPC_REL16:
6588 case elfcpp::R_PPC64_TOC16:
6589 case elfcpp::R_POWERPC_GOT16:
6590 case elfcpp::R_POWERPC_SECTOFF:
6591 case elfcpp::R_POWERPC_TPREL16:
6592 case elfcpp::R_POWERPC_DTPREL16:
6593 case elfcpp::R_POWERPC_GOT_TLSGD16:
6594 case elfcpp::R_POWERPC_GOT_TLSLD16:
6595 case elfcpp::R_POWERPC_GOT_TPREL16:
6596 case elfcpp::R_POWERPC_ADDR16_LO:
6597 case elfcpp::R_POWERPC_REL16_LO:
6598 case elfcpp::R_PPC64_TOC16_LO:
6599 case elfcpp::R_POWERPC_GOT16_LO:
6600 case elfcpp::R_POWERPC_SECTOFF_LO:
6601 case elfcpp::R_POWERPC_TPREL16_LO:
6602 case elfcpp::R_POWERPC_DTPREL16_LO:
6603 case elfcpp::R_POWERPC_GOT_TLSGD16_LO:
6604 case elfcpp::R_POWERPC_GOT_TLSLD16_LO:
6605 case elfcpp::R_POWERPC_GOT_TPREL16_LO:
6606 status = Reloc::addr16(view, value, overflow);
6609 case elfcpp::R_POWERPC_UADDR16:
6610 status = Reloc::addr16_u(view, value, overflow);
6613 case elfcpp::R_POWERPC_ADDR16_HI:
6614 case elfcpp::R_POWERPC_REL16_HI:
6615 case elfcpp::R_PPC64_TOC16_HI:
6616 case elfcpp::R_POWERPC_GOT16_HI:
6617 case elfcpp::R_POWERPC_SECTOFF_HI:
6618 case elfcpp::R_POWERPC_TPREL16_HI:
6619 case elfcpp::R_POWERPC_DTPREL16_HI:
6620 case elfcpp::R_POWERPC_GOT_TLSGD16_HI:
6621 case elfcpp::R_POWERPC_GOT_TLSLD16_HI:
6622 case elfcpp::R_POWERPC_GOT_TPREL16_HI:
6623 case elfcpp::R_POWERPC_GOT_DTPREL16_HI:
6624 Reloc::addr16_hi(view, value);
6627 case elfcpp::R_POWERPC_ADDR16_HA:
6628 case elfcpp::R_POWERPC_REL16_HA:
6629 case elfcpp::R_PPC64_TOC16_HA:
6630 case elfcpp::R_POWERPC_GOT16_HA:
6631 case elfcpp::R_POWERPC_SECTOFF_HA:
6632 case elfcpp::R_POWERPC_TPREL16_HA:
6633 case elfcpp::R_POWERPC_DTPREL16_HA:
6634 case elfcpp::R_POWERPC_GOT_TLSGD16_HA:
6635 case elfcpp::R_POWERPC_GOT_TLSLD16_HA:
6636 case elfcpp::R_POWERPC_GOT_TPREL16_HA:
6637 case elfcpp::R_POWERPC_GOT_DTPREL16_HA:
6638 Reloc::addr16_ha(view, value);
6641 case elfcpp::R_PPC64_DTPREL16_HIGHER:
6643 // R_PPC_EMB_NADDR16_LO
6645 case elfcpp::R_PPC64_ADDR16_HIGHER:
6646 case elfcpp::R_PPC64_TPREL16_HIGHER:
6647 Reloc::addr16_hi2(view, value);
6650 case elfcpp::R_PPC64_DTPREL16_HIGHERA:
6652 // R_PPC_EMB_NADDR16_HI
6654 case elfcpp::R_PPC64_ADDR16_HIGHERA:
6655 case elfcpp::R_PPC64_TPREL16_HIGHERA:
6656 Reloc::addr16_ha2(view, value);
6659 case elfcpp::R_PPC64_DTPREL16_HIGHEST:
6661 // R_PPC_EMB_NADDR16_HA
6663 case elfcpp::R_PPC64_ADDR16_HIGHEST:
6664 case elfcpp::R_PPC64_TPREL16_HIGHEST:
6665 Reloc::addr16_hi3(view, value);
6668 case elfcpp::R_PPC64_DTPREL16_HIGHESTA:
6672 case elfcpp::R_PPC64_ADDR16_HIGHESTA:
6673 case elfcpp::R_PPC64_TPREL16_HIGHESTA:
6674 Reloc::addr16_ha3(view, value);
6677 case elfcpp::R_PPC64_DTPREL16_DS:
6678 case elfcpp::R_PPC64_DTPREL16_LO_DS:
6680 // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16
6682 case elfcpp::R_PPC64_TPREL16_DS:
6683 case elfcpp::R_PPC64_TPREL16_LO_DS:
6685 // R_PPC_TLSGD, R_PPC_TLSLD
6687 case elfcpp::R_PPC64_ADDR16_DS:
6688 case elfcpp::R_PPC64_ADDR16_LO_DS:
6689 case elfcpp::R_PPC64_TOC16_DS:
6690 case elfcpp::R_PPC64_TOC16_LO_DS:
6691 case elfcpp::R_PPC64_GOT16_DS:
6692 case elfcpp::R_PPC64_GOT16_LO_DS:
6693 case elfcpp::R_PPC64_SECTOFF_DS:
6694 case elfcpp::R_PPC64_SECTOFF_LO_DS:
6695 status = Reloc::addr16_ds(view, value, overflow);
6698 case elfcpp::R_POWERPC_ADDR14:
6699 case elfcpp::R_POWERPC_ADDR14_BRTAKEN:
6700 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN:
6701 case elfcpp::R_POWERPC_REL14:
6702 case elfcpp::R_POWERPC_REL14_BRTAKEN:
6703 case elfcpp::R_POWERPC_REL14_BRNTAKEN:
6704 status = Reloc::addr14(view, value, overflow);
6707 case elfcpp::R_POWERPC_COPY:
6708 case elfcpp::R_POWERPC_GLOB_DAT:
6709 case elfcpp::R_POWERPC_JMP_SLOT:
6710 case elfcpp::R_POWERPC_RELATIVE:
6711 case elfcpp::R_POWERPC_DTPMOD:
6712 case elfcpp::R_PPC64_JMP_IREL:
6713 case elfcpp::R_POWERPC_IRELATIVE:
6714 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
6715 _("unexpected reloc %u in object file"),
6719 case elfcpp::R_PPC_EMB_SDA21:
6724 // R_PPC64_TOCSAVE. For the time being this can be ignored.
6728 case elfcpp::R_PPC_EMB_SDA2I16:
6729 case elfcpp::R_PPC_EMB_SDA2REL:
6732 // R_PPC64_TLSGD, R_PPC64_TLSLD
6735 case elfcpp::R_POWERPC_PLT32:
6736 case elfcpp::R_POWERPC_PLTREL32:
6737 case elfcpp::R_POWERPC_PLT16_LO:
6738 case elfcpp::R_POWERPC_PLT16_HI:
6739 case elfcpp::R_POWERPC_PLT16_HA:
6740 case elfcpp::R_PPC_SDAREL16:
6741 case elfcpp::R_POWERPC_ADDR30:
6742 case elfcpp::R_PPC64_PLT64:
6743 case elfcpp::R_PPC64_PLTREL64:
6744 case elfcpp::R_PPC64_PLTGOT16:
6745 case elfcpp::R_PPC64_PLTGOT16_LO:
6746 case elfcpp::R_PPC64_PLTGOT16_HI:
6747 case elfcpp::R_PPC64_PLTGOT16_HA:
6748 case elfcpp::R_PPC64_PLT16_LO_DS:
6749 case elfcpp::R_PPC64_PLTGOT16_DS:
6750 case elfcpp::R_PPC64_PLTGOT16_LO_DS:
6751 case elfcpp::R_PPC_EMB_RELSEC16:
6752 case elfcpp::R_PPC_EMB_RELST_LO:
6753 case elfcpp::R_PPC_EMB_RELST_HI:
6754 case elfcpp::R_PPC_EMB_RELST_HA:
6755 case elfcpp::R_PPC_EMB_BIT_FLD:
6756 case elfcpp::R_PPC_EMB_RELSDA:
6757 case elfcpp::R_PPC_TOC16:
6760 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
6761 _("unsupported reloc %u"),
6765 if (status != Powerpc_relocate_functions<size, big_endian>::STATUS_OK)
6766 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
6767 _("relocation overflow"));
6772 // Relocate section data.
6774 template<int size, bool big_endian>
6776 Target_powerpc<size, big_endian>::relocate_section(
6777 const Relocate_info<size, big_endian>* relinfo,
6778 unsigned int sh_type,
6779 const unsigned char* prelocs,
6781 Output_section* output_section,
6782 bool needs_special_offset_handling,
6783 unsigned char* view,
6785 section_size_type view_size,
6786 const Reloc_symbol_changes* reloc_symbol_changes)
6788 typedef Target_powerpc<size, big_endian> Powerpc;
6789 typedef typename Target_powerpc<size, big_endian>::Relocate Powerpc_relocate;
6790 typedef typename Target_powerpc<size, big_endian>::Relocate_comdat_behavior
6791 Powerpc_comdat_behavior;
6793 gold_assert(sh_type == elfcpp::SHT_RELA);
6795 gold::relocate_section<size, big_endian, Powerpc, elfcpp::SHT_RELA,
6796 Powerpc_relocate, Powerpc_comdat_behavior>(
6802 needs_special_offset_handling,
6806 reloc_symbol_changes);
6809 class Powerpc_scan_relocatable_reloc
6812 // Return the strategy to use for a local symbol which is not a
6813 // section symbol, given the relocation type.
6814 inline Relocatable_relocs::Reloc_strategy
6815 local_non_section_strategy(unsigned int r_type, Relobj*, unsigned int r_sym)
6817 if (r_type == 0 && r_sym == 0)
6818 return Relocatable_relocs::RELOC_DISCARD;
6819 return Relocatable_relocs::RELOC_COPY;
6822 // Return the strategy to use for a local symbol which is a section
6823 // symbol, given the relocation type.
6824 inline Relocatable_relocs::Reloc_strategy
6825 local_section_strategy(unsigned int, Relobj*)
6827 return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA;
6830 // Return the strategy to use for a global symbol, given the
6831 // relocation type, the object, and the symbol index.
6832 inline Relocatable_relocs::Reloc_strategy
6833 global_strategy(unsigned int r_type, Relobj*, unsigned int)
6835 if (r_type == elfcpp::R_PPC_PLTREL24)
6836 return Relocatable_relocs::RELOC_SPECIAL;
6837 return Relocatable_relocs::RELOC_COPY;
6841 // Scan the relocs during a relocatable link.
6843 template<int size, bool big_endian>
6845 Target_powerpc<size, big_endian>::scan_relocatable_relocs(
6846 Symbol_table* symtab,
6848 Sized_relobj_file<size, big_endian>* object,
6849 unsigned int data_shndx,
6850 unsigned int sh_type,
6851 const unsigned char* prelocs,
6853 Output_section* output_section,
6854 bool needs_special_offset_handling,
6855 size_t local_symbol_count,
6856 const unsigned char* plocal_symbols,
6857 Relocatable_relocs* rr)
6859 gold_assert(sh_type == elfcpp::SHT_RELA);
6861 gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_RELA,
6862 Powerpc_scan_relocatable_reloc>(
6870 needs_special_offset_handling,
6876 // Emit relocations for a section.
6877 // This is a modified version of the function by the same name in
6878 // target-reloc.h. Using relocate_special_relocatable for
6879 // R_PPC_PLTREL24 would require duplication of the entire body of the
6880 // loop, so we may as well duplicate the whole thing.
6882 template<int size, bool big_endian>
6884 Target_powerpc<size, big_endian>::relocate_relocs(
6885 const Relocate_info<size, big_endian>* relinfo,
6886 unsigned int sh_type,
6887 const unsigned char* prelocs,
6889 Output_section* output_section,
6890 typename elfcpp::Elf_types<size>::Elf_Off offset_in_output_section,
6891 const Relocatable_relocs* rr,
6893 Address view_address,
6895 unsigned char* reloc_view,
6896 section_size_type reloc_view_size)
6898 gold_assert(sh_type == elfcpp::SHT_RELA);
6900 typedef typename Reloc_types<elfcpp::SHT_RELA, size, big_endian>::Reloc
6902 typedef typename Reloc_types<elfcpp::SHT_RELA, size, big_endian>::Reloc_write
6904 const int reloc_size
6905 = Reloc_types<elfcpp::SHT_RELA, size, big_endian>::reloc_size;
6907 Powerpc_relobj<size, big_endian>* const object
6908 = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object);
6909 const unsigned int local_count = object->local_symbol_count();
6910 unsigned int got2_shndx = object->got2_shndx();
6911 Address got2_addend = 0;
6912 if (got2_shndx != 0)
6914 got2_addend = object->get_output_section_offset(got2_shndx);
6915 gold_assert(got2_addend != invalid_address);
6918 unsigned char* pwrite = reloc_view;
6919 bool zap_next = false;
6920 for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size)
6922 Relocatable_relocs::Reloc_strategy strategy = rr->strategy(i);
6923 if (strategy == Relocatable_relocs::RELOC_DISCARD)
6926 Reltype reloc(prelocs);
6927 Reltype_write reloc_write(pwrite);
6929 Address offset = reloc.get_r_offset();
6930 typename elfcpp::Elf_types<size>::Elf_WXword r_info = reloc.get_r_info();
6931 unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info);
6932 unsigned int r_type = elfcpp::elf_r_type<size>(r_info);
6933 const unsigned int orig_r_sym = r_sym;
6934 typename elfcpp::Elf_types<size>::Elf_Swxword addend
6935 = reloc.get_r_addend();
6936 const Symbol* gsym = NULL;
6940 // We could arrange to discard these and other relocs for
6941 // tls optimised sequences in the strategy methods, but for
6942 // now do as BFD ld does.
6943 r_type = elfcpp::R_POWERPC_NONE;
6947 // Get the new symbol index.
6948 if (r_sym < local_count)
6952 case Relocatable_relocs::RELOC_COPY:
6953 case Relocatable_relocs::RELOC_SPECIAL:
6956 r_sym = object->symtab_index(r_sym);
6957 gold_assert(r_sym != -1U);
6961 case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA:
6963 // We are adjusting a section symbol. We need to find
6964 // the symbol table index of the section symbol for
6965 // the output section corresponding to input section
6966 // in which this symbol is defined.
6967 gold_assert(r_sym < local_count);
6969 unsigned int shndx =
6970 object->local_symbol_input_shndx(r_sym, &is_ordinary);
6971 gold_assert(is_ordinary);
6972 Output_section* os = object->output_section(shndx);
6973 gold_assert(os != NULL);
6974 gold_assert(os->needs_symtab_index());
6975 r_sym = os->symtab_index();
6985 gsym = object->global_symbol(r_sym);
6986 gold_assert(gsym != NULL);
6987 if (gsym->is_forwarder())
6988 gsym = relinfo->symtab->resolve_forwards(gsym);
6990 gold_assert(gsym->has_symtab_index());
6991 r_sym = gsym->symtab_index();
6994 // Get the new offset--the location in the output section where
6995 // this relocation should be applied.
6996 if (static_cast<Address>(offset_in_output_section) != invalid_address)
6997 offset += offset_in_output_section;
7000 section_offset_type sot_offset =
7001 convert_types<section_offset_type, Address>(offset);
7002 section_offset_type new_sot_offset =
7003 output_section->output_offset(object, relinfo->data_shndx,
7005 gold_assert(new_sot_offset != -1);
7006 offset = new_sot_offset;
7009 // In an object file, r_offset is an offset within the section.
7010 // In an executable or dynamic object, generated by
7011 // --emit-relocs, r_offset is an absolute address.
7012 if (!parameters->options().relocatable())
7014 offset += view_address;
7015 if (static_cast<Address>(offset_in_output_section) != invalid_address)
7016 offset -= offset_in_output_section;
7019 // Handle the reloc addend based on the strategy.
7020 if (strategy == Relocatable_relocs::RELOC_COPY)
7022 else if (strategy == Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA)
7024 const Symbol_value<size>* psymval = object->local_symbol(orig_r_sym);
7025 addend = psymval->value(object, addend);
7027 else if (strategy == Relocatable_relocs::RELOC_SPECIAL)
7029 if (addend >= 32768)
7030 addend += got2_addend;
7035 if (!parameters->options().relocatable())
7037 if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16
7038 || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO
7039 || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI
7040 || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA)
7042 // First instruction of a global dynamic sequence,
7044 const bool final = gsym == NULL || gsym->final_value_is_known();
7045 switch (this->optimize_tls_gd(final))
7047 case tls::TLSOPT_TO_IE:
7048 r_type += (elfcpp::R_POWERPC_GOT_TPREL16
7049 - elfcpp::R_POWERPC_GOT_TLSGD16);
7051 case tls::TLSOPT_TO_LE:
7052 if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16
7053 || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO)
7054 r_type = elfcpp::R_POWERPC_TPREL16_HA;
7057 r_type = elfcpp::R_POWERPC_NONE;
7058 offset -= 2 * big_endian;
7065 else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16
7066 || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO
7067 || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI
7068 || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA)
7070 // First instruction of a local dynamic sequence,
7072 if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE)
7074 if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16
7075 || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO)
7077 r_type = elfcpp::R_POWERPC_TPREL16_HA;
7078 const Output_section* os = relinfo->layout->tls_segment()
7080 gold_assert(os != NULL);
7081 gold_assert(os->needs_symtab_index());
7082 r_sym = os->symtab_index();
7083 addend = dtp_offset;
7087 r_type = elfcpp::R_POWERPC_NONE;
7088 offset -= 2 * big_endian;
7092 else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16
7093 || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO
7094 || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI
7095 || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA)
7097 // First instruction of initial exec sequence.
7098 const bool final = gsym == NULL || gsym->final_value_is_known();
7099 if (this->optimize_tls_ie(final) == tls::TLSOPT_TO_LE)
7101 if (r_type == elfcpp::R_POWERPC_GOT_TPREL16
7102 || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO)
7103 r_type = elfcpp::R_POWERPC_TPREL16_HA;
7106 r_type = elfcpp::R_POWERPC_NONE;
7107 offset -= 2 * big_endian;
7111 else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD)
7112 || (size == 32 && r_type == elfcpp::R_PPC_TLSGD))
7114 // Second instruction of a global dynamic sequence,
7115 // the __tls_get_addr call
7116 const bool final = gsym == NULL || gsym->final_value_is_known();
7117 switch (this->optimize_tls_gd(final))
7119 case tls::TLSOPT_TO_IE:
7120 r_type = elfcpp::R_POWERPC_NONE;
7123 case tls::TLSOPT_TO_LE:
7124 r_type = elfcpp::R_POWERPC_TPREL16_LO;
7125 offset += 2 * big_endian;
7132 else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD)
7133 || (size == 32 && r_type == elfcpp::R_PPC_TLSLD))
7135 // Second instruction of a local dynamic sequence,
7136 // the __tls_get_addr call
7137 if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE)
7139 const Output_section* os = relinfo->layout->tls_segment()
7141 gold_assert(os != NULL);
7142 gold_assert(os->needs_symtab_index());
7143 r_sym = os->symtab_index();
7144 addend = dtp_offset;
7145 r_type = elfcpp::R_POWERPC_TPREL16_LO;
7146 offset += 2 * big_endian;
7150 else if (r_type == elfcpp::R_POWERPC_TLS)
7152 // Second instruction of an initial exec sequence
7153 const bool final = gsym == NULL || gsym->final_value_is_known();
7154 if (this->optimize_tls_ie(final) == tls::TLSOPT_TO_LE)
7156 r_type = elfcpp::R_POWERPC_TPREL16_LO;
7157 offset += 2 * big_endian;
7162 reloc_write.put_r_offset(offset);
7163 reloc_write.put_r_info(elfcpp::elf_r_info<size>(r_sym, r_type));
7164 reloc_write.put_r_addend(addend);
7166 pwrite += reloc_size;
7169 gold_assert(static_cast<section_size_type>(pwrite - reloc_view)
7170 == reloc_view_size);
7173 // Return the value to use for a dynamic symbol which requires special
7174 // treatment. This is how we support equality comparisons of function
7175 // pointers across shared library boundaries, as described in the
7176 // processor specific ABI supplement.
7178 template<int size, bool big_endian>
7180 Target_powerpc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const
7184 gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset());
7185 for (typename Stub_tables::const_iterator p = this->stub_tables_.begin();
7186 p != this->stub_tables_.end();
7189 Address off = (*p)->find_plt_call_entry(gsym);
7190 if (off != invalid_address)
7191 return (*p)->stub_address() + off;
7197 // Return the PLT address to use for a local symbol.
7198 template<int size, bool big_endian>
7200 Target_powerpc<size, big_endian>::do_plt_address_for_local(
7201 const Relobj* object,
7202 unsigned int symndx) const
7206 const Sized_relobj<size, big_endian>* relobj
7207 = static_cast<const Sized_relobj<size, big_endian>*>(object);
7208 for (typename Stub_tables::const_iterator p = this->stub_tables_.begin();
7209 p != this->stub_tables_.end();
7212 Address off = (*p)->find_plt_call_entry(relobj->sized_relobj(),
7214 if (off != invalid_address)
7215 return (*p)->stub_address() + off;
7221 // Return the PLT address to use for a global symbol.
7222 template<int size, bool big_endian>
7224 Target_powerpc<size, big_endian>::do_plt_address_for_global(
7225 const Symbol* gsym) const
7229 for (typename Stub_tables::const_iterator p = this->stub_tables_.begin();
7230 p != this->stub_tables_.end();
7233 Address off = (*p)->find_plt_call_entry(gsym);
7234 if (off != invalid_address)
7235 return (*p)->stub_address() + off;
7241 // Return the offset to use for the GOT_INDX'th got entry which is
7242 // for a local tls symbol specified by OBJECT, SYMNDX.
7243 template<int size, bool big_endian>
7245 Target_powerpc<size, big_endian>::do_tls_offset_for_local(
7246 const Relobj* object,
7247 unsigned int symndx,
7248 unsigned int got_indx) const
7250 const Powerpc_relobj<size, big_endian>* ppc_object
7251 = static_cast<const Powerpc_relobj<size, big_endian>*>(object);
7252 if (ppc_object->local_symbol(symndx)->is_tls_symbol())
7254 for (Got_type got_type = GOT_TYPE_TLSGD;
7255 got_type <= GOT_TYPE_TPREL;
7256 got_type = Got_type(got_type + 1))
7257 if (ppc_object->local_has_got_offset(symndx, got_type))
7259 unsigned int off = ppc_object->local_got_offset(symndx, got_type);
7260 if (got_type == GOT_TYPE_TLSGD)
7262 if (off == got_indx * (size / 8))
7264 if (got_type == GOT_TYPE_TPREL)
7274 // Return the offset to use for the GOT_INDX'th got entry which is
7275 // for global tls symbol GSYM.
7276 template<int size, bool big_endian>
7278 Target_powerpc<size, big_endian>::do_tls_offset_for_global(
7280 unsigned int got_indx) const
7282 if (gsym->type() == elfcpp::STT_TLS)
7284 for (Got_type got_type = GOT_TYPE_TLSGD;
7285 got_type <= GOT_TYPE_TPREL;
7286 got_type = Got_type(got_type + 1))
7287 if (gsym->has_got_offset(got_type))
7289 unsigned int off = gsym->got_offset(got_type);
7290 if (got_type == GOT_TYPE_TLSGD)
7292 if (off == got_indx * (size / 8))
7294 if (got_type == GOT_TYPE_TPREL)
7304 // The selector for powerpc object files.
7306 template<int size, bool big_endian>
7307 class Target_selector_powerpc : public Target_selector
7310 Target_selector_powerpc()
7311 : Target_selector(size == 64 ? elfcpp::EM_PPC64 : elfcpp::EM_PPC,
7314 ? (big_endian ? "elf64-powerpc" : "elf64-powerpcle")
7315 : (big_endian ? "elf32-powerpc" : "elf32-powerpcle")),
7317 ? (big_endian ? "elf64ppc" : "elf64lppc")
7318 : (big_endian ? "elf32ppc" : "elf32lppc")))
7322 do_instantiate_target()
7323 { return new Target_powerpc<size, big_endian>(); }
7326 Target_selector_powerpc<32, true> target_selector_ppc32;
7327 Target_selector_powerpc<32, false> target_selector_ppc32le;
7328 Target_selector_powerpc<64, true> target_selector_ppc64;
7329 Target_selector_powerpc<64, false> target_selector_ppc64le;
7331 // Instantiate these constants for -O0
7332 template<int size, bool big_endian>
7333 const int Output_data_glink<size, big_endian>::pltresolve_size;
7334 template<int size, bool big_endian>
7335 const typename Stub_table<size, big_endian>::Address
7336 Stub_table<size, big_endian>::invalid_address;
7337 template<int size, bool big_endian>
7338 const typename Target_powerpc<size, big_endian>::Address
7339 Target_powerpc<size, big_endian>::invalid_address;
7341 } // End anonymous namespace.