1 // powerpc.cc -- powerpc target support for gold.
3 // Copyright (C) 2008-2023 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.
30 #include "parameters.h"
37 #include "copy-relocs.h"
39 #include "target-reloc.h"
40 #include "target-select.h"
44 #include "attributes.h"
51 template<int size
, bool big_endian
>
52 class Output_data_plt_powerpc
;
54 template<int size
, bool big_endian
>
55 class Output_data_brlt_powerpc
;
57 template<int size
, bool big_endian
>
58 class Output_data_got_powerpc
;
60 template<int size
, bool big_endian
>
61 class Output_data_glink
;
63 template<int size
, bool big_endian
>
66 template<int size
, bool big_endian
>
67 class Output_data_save_res
;
69 template<int size
, bool big_endian
>
72 struct Stub_table_owner
75 : output_section(NULL
), owner(NULL
)
78 Output_section
* output_section
;
79 const Output_section::Input_section
* owner
;
83 inline bool is_branch_reloc(unsigned int);
86 inline bool is_plt16_reloc(unsigned int);
88 // Counter incremented on every Powerpc_relobj constructed.
89 static uint32_t object_id
= 0;
91 template<int size
, bool big_endian
>
92 class Powerpc_relobj
: public Sized_relobj_file
<size
, big_endian
>
95 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
96 typedef Unordered_set
<Section_id
, Section_id_hash
> Section_refs
;
97 typedef Unordered_map
<Address
, Section_refs
> Access_from
;
99 Powerpc_relobj(const std::string
& name
, Input_file
* input_file
, off_t offset
,
100 const typename
elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
101 : Sized_relobj_file
<size
, big_endian
>(name
, input_file
, offset
, ehdr
),
102 uniq_(object_id
++), special_(0), relatoc_(0), toc_(0),
103 has_small_toc_reloc_(false), opd_valid_(false),
104 e_flags_(ehdr
.get_e_flags()), no_toc_opt_(), opd_ent_(),
105 access_from_map_(), has14_(), stub_table_index_(), st_other_(),
106 attributes_section_data_(NULL
)
108 this->set_abiversion(0);
112 { delete this->attributes_section_data_
; }
114 // Read the symbols then set up st_other vector.
116 do_read_symbols(Read_symbols_data
*);
118 // Arrange to always relocate .toc first.
120 do_relocate_sections(
121 const Symbol_table
* symtab
, const Layout
* layout
,
122 const unsigned char* pshdrs
, Output_file
* of
,
123 typename Sized_relobj_file
<size
, big_endian
>::Views
* pviews
);
125 // The .toc section index.
132 // Mark .toc entry at OFF as not optimizable.
134 set_no_toc_opt(Address off
)
136 if (this->no_toc_opt_
.empty())
137 this->no_toc_opt_
.resize(this->section_size(this->toc_shndx())
140 if (off
< this->no_toc_opt_
.size())
141 this->no_toc_opt_
[off
] = true;
144 // Mark the entire .toc as not optimizable.
148 this->no_toc_opt_
.resize(1);
149 this->no_toc_opt_
[0] = true;
152 // Return true if code using the .toc entry at OFF should not be edited.
154 no_toc_opt(Address off
) const
156 if (this->no_toc_opt_
.empty())
159 if (off
>= this->no_toc_opt_
.size())
161 return this->no_toc_opt_
[off
];
164 // The .got2 section shndx.
169 return this->special_
;
174 // The .opd section shndx.
181 return this->special_
;
184 // Init OPD entry arrays.
186 init_opd(size_t opd_size
)
188 size_t count
= this->opd_ent_ndx(opd_size
);
189 this->opd_ent_
.resize(count
);
192 // Return section and offset of function entry for .opd + R_OFF.
194 get_opd_ent(Address r_off
, Address
* value
= NULL
) const
196 size_t ndx
= this->opd_ent_ndx(r_off
);
197 gold_assert(ndx
< this->opd_ent_
.size());
198 gold_assert(this->opd_ent_
[ndx
].shndx
!= 0);
200 *value
= this->opd_ent_
[ndx
].off
;
201 return this->opd_ent_
[ndx
].shndx
;
204 // Set section and offset of function entry for .opd + R_OFF.
206 set_opd_ent(Address r_off
, unsigned int shndx
, Address value
)
208 size_t ndx
= this->opd_ent_ndx(r_off
);
209 gold_assert(ndx
< this->opd_ent_
.size());
210 this->opd_ent_
[ndx
].shndx
= shndx
;
211 this->opd_ent_
[ndx
].off
= value
;
214 // Return discard flag for .opd + R_OFF.
216 get_opd_discard(Address r_off
) const
218 size_t ndx
= this->opd_ent_ndx(r_off
);
219 gold_assert(ndx
< this->opd_ent_
.size());
220 return this->opd_ent_
[ndx
].discard
;
223 // Set discard flag for .opd + R_OFF.
225 set_opd_discard(Address r_off
)
227 size_t ndx
= this->opd_ent_ndx(r_off
);
228 gold_assert(ndx
< this->opd_ent_
.size());
229 this->opd_ent_
[ndx
].discard
= true;
234 { return this->opd_valid_
; }
238 { this->opd_valid_
= true; }
240 // Examine .rela.opd to build info about function entry points.
242 scan_opd_relocs(size_t reloc_count
,
243 const unsigned char* prelocs
,
244 const unsigned char* plocal_syms
);
246 // Returns true if a code sequence loading a TOC entry can be
247 // converted into code calculating a TOC pointer relative offset.
249 make_toc_relative(Target_powerpc
<size
, big_endian
>* target
,
253 make_got_relative(Target_powerpc
<size
, big_endian
>* target
,
254 const Symbol_value
<size
>* psymval
,
258 // Perform the Sized_relobj_file method, then set up opd info from
261 do_read_relocs(Read_relocs_data
*);
264 do_find_special_sections(Read_symbols_data
* sd
);
266 // Adjust this local symbol value. Return false if the symbol
267 // should be discarded from the output file.
269 do_adjust_local_symbol(Symbol_value
<size
>* lv
) const
271 if (size
== 64 && this->opd_shndx() != 0)
274 if (lv
->input_shndx(&is_ordinary
) != this->opd_shndx())
276 if (this->get_opd_discard(lv
->input_value()))
284 { return &this->access_from_map_
; }
286 // Add a reference from SRC_OBJ, SRC_INDX to this object's .opd
287 // section at DST_OFF.
289 add_reference(Relobj
* src_obj
,
290 unsigned int src_indx
,
291 typename
elfcpp::Elf_types
<size
>::Elf_Addr dst_off
)
293 Section_id
src_id(src_obj
, src_indx
);
294 this->access_from_map_
[dst_off
].insert(src_id
);
297 // Add a reference to the code section specified by the .opd entry
300 add_gc_mark(typename
elfcpp::Elf_types
<size
>::Elf_Addr dst_off
)
302 size_t ndx
= this->opd_ent_ndx(dst_off
);
303 if (ndx
>= this->opd_ent_
.size())
304 this->opd_ent_
.resize(ndx
+ 1);
305 this->opd_ent_
[ndx
].gc_mark
= true;
309 process_gc_mark(Symbol_table
* symtab
)
311 for (size_t i
= 0; i
< this->opd_ent_
.size(); i
++)
312 if (this->opd_ent_
[i
].gc_mark
)
314 unsigned int shndx
= this->opd_ent_
[i
].shndx
;
315 symtab
->gc()->worklist().push_back(Section_id(this, shndx
));
320 set_has_small_toc_reloc()
321 { has_small_toc_reloc_
= true; }
324 has_small_toc_reloc() const
325 { return has_small_toc_reloc_
; }
328 set_has_14bit_branch(unsigned int shndx
)
330 if (shndx
>= this->has14_
.size())
331 this->has14_
.resize(shndx
+ 1);
332 this->has14_
[shndx
] = true;
336 has_14bit_branch(unsigned int shndx
) const
337 { return shndx
< this->has14_
.size() && this->has14_
[shndx
]; }
340 set_stub_table(unsigned int shndx
, unsigned int stub_index
)
342 if (shndx
>= this->stub_table_index_
.size())
343 this->stub_table_index_
.resize(shndx
+ 1, -1);
344 this->stub_table_index_
[shndx
] = stub_index
;
347 Stub_table
<size
, big_endian
>*
348 stub_table(unsigned int shndx
)
350 if (shndx
< this->stub_table_index_
.size())
352 Target_powerpc
<size
, big_endian
>* target
353 = static_cast<Target_powerpc
<size
, big_endian
>*>(
354 parameters
->sized_target
<size
, big_endian
>());
355 unsigned int indx
= this->stub_table_index_
[shndx
];
356 if (indx
< target
->stub_tables().size())
357 return target
->stub_tables()[indx
];
365 this->stub_table_index_
.clear();
370 { return this->uniq_
; }
374 { return this->e_flags_
& elfcpp::EF_PPC64_ABI
; }
376 // Set ABI version for input and output
378 set_abiversion(int ver
);
381 st_other (unsigned int symndx
) const
383 return this->st_other_
[symndx
];
387 ppc64_local_entry_offset(const Symbol
* sym
) const
388 { return elfcpp::ppc64_decode_local_entry(sym
->nonvis() >> 3); }
391 ppc64_local_entry_offset(unsigned int symndx
) const
392 { return elfcpp::ppc64_decode_local_entry(this->st_other_
[symndx
] >> 5); }
395 ppc64_needs_toc(const Symbol
* sym
) const
396 { return sym
->nonvis() > 1 << 3; }
399 ppc64_needs_toc(unsigned int symndx
) const
400 { return this->st_other_
[symndx
] > 1 << 5; }
402 // The contents of the .gnu.attributes section if there is one.
403 const Attributes_section_data
*
404 attributes_section_data() const
405 { return this->attributes_section_data_
; }
416 // Return index into opd_ent_ array for .opd entry at OFF.
417 // .opd entries are 24 bytes long, but they can be spaced 16 bytes
418 // apart when the language doesn't use the last 8-byte word, the
419 // environment pointer. Thus dividing the entry section offset by
420 // 16 will give an index into opd_ent_ that works for either layout
421 // of .opd. (It leaves some elements of the vector unused when .opd
422 // entries are spaced 24 bytes apart, but we don't know the spacing
423 // until relocations are processed, and in any case it is possible
424 // for an object to have some entries spaced 16 bytes apart and
425 // others 24 bytes apart.)
427 opd_ent_ndx(size_t off
) const
430 // Per object unique identifier
433 // For 32-bit the .got2 section shdnx, for 64-bit the .opd section shndx.
434 unsigned int special_
;
436 // For 64-bit the .rela.toc and .toc section shdnx.
437 unsigned int relatoc_
;
440 // For 64-bit, whether this object uses small model relocs to access
442 bool has_small_toc_reloc_
;
444 // Set at the start of gc_process_relocs, when we know opd_ent_
445 // vector is valid. The flag could be made atomic and set in
446 // do_read_relocs with memory_order_release and then tested with
447 // memory_order_acquire, potentially resulting in fewer entries in
452 elfcpp::Elf_Word e_flags_
;
454 // For 64-bit, an array with one entry per 64-bit word in the .toc
455 // section, set if accesses using that word cannot be optimised.
456 std::vector
<bool> no_toc_opt_
;
458 // The first 8-byte word of an OPD entry gives the address of the
459 // entry point of the function. Relocatable object files have a
460 // relocation on this word. The following vector records the
461 // section and offset specified by these relocations.
462 std::vector
<Opd_ent
> opd_ent_
;
464 // References made to this object's .opd section when running
465 // gc_process_relocs for another object, before the opd_ent_ vector
466 // is valid for this object.
467 Access_from access_from_map_
;
469 // Whether input section has a 14-bit branch reloc.
470 std::vector
<bool> has14_
;
472 // The stub table to use for a given input section.
473 std::vector
<unsigned int> stub_table_index_
;
475 // ELF st_other field for local symbols.
476 std::vector
<unsigned char> st_other_
;
478 // Object attributes if there is a .gnu.attributes section.
479 Attributes_section_data
* attributes_section_data_
;
482 template<int size
, bool big_endian
>
483 class Powerpc_dynobj
: public Sized_dynobj
<size
, big_endian
>
486 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
488 Powerpc_dynobj(const std::string
& name
, Input_file
* input_file
, off_t offset
,
489 const typename
elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
490 : Sized_dynobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
),
491 opd_shndx_(0), e_flags_(ehdr
.get_e_flags()), opd_ent_(),
492 attributes_section_data_(NULL
)
494 this->set_abiversion(0);
498 { delete this->attributes_section_data_
; }
500 // Call Sized_dynobj::do_read_symbols to read the symbols then
501 // read .opd from a dynamic object, filling in opd_ent_ vector,
503 do_read_symbols(Read_symbols_data
*);
505 // The .opd section shndx.
509 return this->opd_shndx_
;
512 // The .opd section address.
516 return this->opd_address_
;
519 // Init OPD entry arrays.
521 init_opd(size_t opd_size
)
523 size_t count
= this->opd_ent_ndx(opd_size
);
524 this->opd_ent_
.resize(count
);
527 // Return section and offset of function entry for .opd + R_OFF.
529 get_opd_ent(Address r_off
, Address
* value
= NULL
) const
531 size_t ndx
= this->opd_ent_ndx(r_off
);
532 gold_assert(ndx
< this->opd_ent_
.size());
533 gold_assert(this->opd_ent_
[ndx
].shndx
!= 0);
535 *value
= this->opd_ent_
[ndx
].off
;
536 return this->opd_ent_
[ndx
].shndx
;
539 // Set section and offset of function entry for .opd + R_OFF.
541 set_opd_ent(Address r_off
, unsigned int shndx
, Address value
)
543 size_t ndx
= this->opd_ent_ndx(r_off
);
544 gold_assert(ndx
< this->opd_ent_
.size());
545 this->opd_ent_
[ndx
].shndx
= shndx
;
546 this->opd_ent_
[ndx
].off
= value
;
551 { return this->e_flags_
& elfcpp::EF_PPC64_ABI
; }
553 // Set ABI version for input and output.
555 set_abiversion(int ver
);
557 // The contents of the .gnu.attributes section if there is one.
558 const Attributes_section_data
*
559 attributes_section_data() const
560 { return this->attributes_section_data_
; }
563 // Used to specify extent of executable sections.
566 Sec_info(Address start_
, Address len_
, unsigned int shndx_
)
567 : start(start_
), len(len_
), shndx(shndx_
)
571 operator<(const Sec_info
& that
) const
572 { return this->start
< that
.start
; }
585 // Return index into opd_ent_ array for .opd entry at OFF.
587 opd_ent_ndx(size_t off
) const
590 // For 64-bit the .opd section shndx and address.
591 unsigned int opd_shndx_
;
592 Address opd_address_
;
595 elfcpp::Elf_Word e_flags_
;
597 // The first 8-byte word of an OPD entry gives the address of the
598 // entry point of the function. Records the section and offset
599 // corresponding to the address. Note that in dynamic objects,
600 // offset is *not* relative to the section.
601 std::vector
<Opd_ent
> opd_ent_
;
603 // Object attributes if there is a .gnu.attributes section.
604 Attributes_section_data
* attributes_section_data_
;
607 // Powerpc_copy_relocs class. Needed to peek at dynamic relocs the
608 // base class will emit.
610 template<int sh_type
, int size
, bool big_endian
>
611 class Powerpc_copy_relocs
: public Copy_relocs
<sh_type
, size
, big_endian
>
614 Powerpc_copy_relocs()
615 : Copy_relocs
<sh_type
, size
, big_endian
>(elfcpp::R_POWERPC_COPY
)
618 // Emit any saved relocations which turn out to be needed. This is
619 // called after all the relocs have been scanned.
621 emit(Output_data_reloc
<sh_type
, true, size
, big_endian
>*);
624 // The types of GOT entries needed for this platform.
625 // These values are exposed to the ABI in an incremental link, but
626 // powerpc does not support incremental linking as yet.
629 GOT_TYPE_STANDARD
= 0,
630 GOT_TYPE_TLSGD
= 1, // double entry for @got@tlsgd
631 GOT_TYPE_DTPREL
= 2, // entry for @got@dtprel
632 GOT_TYPE_TPREL
= 3, // entry for @got@tprel
634 GOT_TYPE_SMALL_TLSGD
= 5,
635 GOT_TYPE_SMALL_DTPREL
= 6,
636 GOT_TYPE_SMALL_TPREL
= 7
639 // gsym->needs_plt_entry purpose is to decide whether a non-branch
640 // reloc should reference a plt entry. It can't be used to decide
641 // whether branches need a plt entry. In fact the call to
642 // needs_plt_entry here is not needed; All cases where it might
643 // return true ought to be covered already. However, since this
644 // function is used to decide between plt_ and lplt_ sections in
645 // plt_off, make certain that every case where make_plt_entry puts
646 // entries in plt_ is covered here.
648 branch_needs_plt_entry(const Symbol
* gsym
)
650 return (((!gsym
->is_defined()
651 || gsym
->is_from_dynobj()
652 || gsym
->is_preemptible())
653 && !gsym
->final_value_is_known())
654 || gsym
->needs_plt_entry());
657 template<int size
, bool big_endian
>
658 class Target_powerpc
: public Sized_target
<size
, big_endian
>
662 Output_data_reloc
<elfcpp::SHT_RELA
, true, size
, big_endian
> Reloc_section
;
663 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
664 typedef typename
elfcpp::Elf_types
<size
>::Elf_Swxword Signed_address
;
665 typedef Unordered_set
<Symbol_location
, Symbol_location_hash
> Tocsave_loc
;
666 static const Address invalid_address
= static_cast<Address
>(0) - 1;
667 // Offset of tp and dtp pointers from start of TLS block.
668 static const Address tp_offset
= 0x7000;
669 static const Address dtp_offset
= 0x8000;
672 : Sized_target
<size
, big_endian
>(&powerpc_info
),
673 got_(NULL
), biggot_(NULL
), plt_(NULL
), iplt_(NULL
), lplt_(NULL
),
674 brlt_section_(NULL
), glink_(NULL
), rela_dyn_(NULL
), copy_relocs_(),
675 tlsld_got_offset_(-1U),
676 stub_tables_(), branch_lookup_table_(), branch_info_(), tocsave_loc_(),
677 power10_relocs_(false), plt_thread_safe_(false), plt_localentry0_(false),
678 plt_localentry0_init_(false), has_localentry0_(false),
679 has_tls_get_addr_opt_(false), no_tprel_opt_(false),
680 relax_failed_(false), relax_fail_count_(0),
681 stub_group_size_(0), savres_section_(0),
682 tls_get_addr_(NULL
), tls_get_addr_opt_(NULL
),
683 attributes_section_data_(NULL
),
684 last_fp_(NULL
), last_ld_(NULL
), last_vec_(NULL
), last_struct_(NULL
)
688 // Process the relocations to determine unreferenced sections for
689 // garbage collection.
691 gc_process_relocs(Symbol_table
* symtab
,
693 Sized_relobj_file
<size
, big_endian
>* object
,
694 unsigned int data_shndx
,
695 unsigned int sh_type
,
696 const unsigned char* prelocs
,
698 Output_section
* output_section
,
699 bool needs_special_offset_handling
,
700 size_t local_symbol_count
,
701 const unsigned char* plocal_symbols
);
703 // Scan the relocations to look for symbol adjustments.
705 scan_relocs(Symbol_table
* symtab
,
707 Sized_relobj_file
<size
, big_endian
>* object
,
708 unsigned int data_shndx
,
709 unsigned int sh_type
,
710 const unsigned char* prelocs
,
712 Output_section
* output_section
,
713 bool needs_special_offset_handling
,
714 size_t local_symbol_count
,
715 const unsigned char* plocal_symbols
);
717 // Map input .toc section to output .got section.
719 do_output_section_name(const Relobj
*, const char* name
, size_t* plen
) const
721 if (size
== 64 && strcmp(name
, ".toc") == 0)
729 // Provide linker defined save/restore functions.
731 define_save_restore_funcs(Layout
*, Symbol_table
*);
733 // No stubs unless a final link.
736 { return !parameters
->options().relocatable(); }
739 do_relax(int, const Input_objects
*, Symbol_table
*, Layout
*, const Task
*);
742 do_plt_fde_location(const Output_data
*, unsigned char*,
743 uint64_t*, off_t
*) const;
745 // Stash info about branches, for stub generation.
747 push_branch(Powerpc_relobj
<size
, big_endian
>* ppc_object
,
748 unsigned int data_shndx
, Address r_offset
,
749 unsigned int r_type
, unsigned int r_sym
, Address addend
)
751 Branch_info
info(ppc_object
, data_shndx
, r_offset
, r_type
, r_sym
, addend
);
752 this->branch_info_
.push_back(info
);
753 if (r_type
== elfcpp::R_POWERPC_REL14
754 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
755 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
)
756 ppc_object
->set_has_14bit_branch(data_shndx
);
759 // Return whether the last branch is a plt call, and if so, mark the
760 // branch as having an R_PPC64_TOCSAVE.
762 mark_pltcall(Powerpc_relobj
<size
, big_endian
>* ppc_object
,
763 unsigned int data_shndx
, Address r_offset
, Symbol_table
* symtab
)
766 && !this->branch_info_
.empty()
767 && this->branch_info_
.back().mark_pltcall(ppc_object
, data_shndx
,
768 r_offset
, this, symtab
));
771 // Say the given location, that of a nop in a function prologue with
772 // an R_PPC64_TOCSAVE reloc, will be used to save r2.
773 // R_PPC64_TOCSAVE relocs on nops following calls point at this nop.
775 add_tocsave(Powerpc_relobj
<size
, big_endian
>* ppc_object
,
776 unsigned int shndx
, Address offset
)
779 loc
.object
= ppc_object
;
782 this->tocsave_loc_
.insert(loc
);
789 return &this->tocsave_loc_
;
793 do_define_standard_symbols(Symbol_table
*, Layout
*);
795 // Finalize the sections.
797 do_finalize_sections(Layout
*, const Input_objects
*, Symbol_table
*);
799 // Return the value to use for a dynamic which requires special
802 do_dynsym_value(const Symbol
*) const;
804 // Return the PLT address to use for a local symbol.
806 do_plt_address_for_local(const Relobj
*, unsigned int) const;
808 // Return the PLT address to use for a global symbol.
810 do_plt_address_for_global(const Symbol
*) const;
812 // Return the offset to use for the GOT_INDX'th got entry which is
813 // for a local tls symbol specified by OBJECT, SYMNDX.
815 do_tls_offset_for_local(const Relobj
* object
,
817 Output_data_got_base
* got
,
818 unsigned int got_indx
,
819 uint64_t addend
) const;
821 // Return the offset to use for the GOT_INDX'th got entry which is
822 // for global tls symbol GSYM.
824 do_tls_offset_for_global(Symbol
* gsym
,
825 Output_data_got_base
* got
, unsigned int got_indx
,
826 uint64_t addend
) const;
829 do_function_location(Symbol_location
*) const;
832 do_can_check_for_function_pointers() const
835 // Adjust -fsplit-stack code which calls non-split-stack code.
837 do_calls_non_split(Relobj
* object
, unsigned int shndx
,
838 section_offset_type fnoffset
, section_size_type fnsize
,
839 const unsigned char* prelocs
, size_t reloc_count
,
840 unsigned char* view
, section_size_type view_size
,
841 std::string
* from
, std::string
* to
) const;
843 // Relocate a section.
845 relocate_section(const Relocate_info
<size
, big_endian
>*,
846 unsigned int sh_type
,
847 const unsigned char* prelocs
,
849 Output_section
* output_section
,
850 bool needs_special_offset_handling
,
852 Address view_address
,
853 section_size_type view_size
,
854 const Reloc_symbol_changes
*);
856 // Scan the relocs during a relocatable link.
858 scan_relocatable_relocs(Symbol_table
* symtab
,
860 Sized_relobj_file
<size
, big_endian
>* object
,
861 unsigned int data_shndx
,
862 unsigned int sh_type
,
863 const unsigned char* prelocs
,
865 Output_section
* output_section
,
866 bool needs_special_offset_handling
,
867 size_t local_symbol_count
,
868 const unsigned char* plocal_symbols
,
869 Relocatable_relocs
*);
871 // Scan the relocs for --emit-relocs.
873 emit_relocs_scan(Symbol_table
* symtab
,
875 Sized_relobj_file
<size
, big_endian
>* object
,
876 unsigned int data_shndx
,
877 unsigned int sh_type
,
878 const unsigned char* prelocs
,
880 Output_section
* output_section
,
881 bool needs_special_offset_handling
,
882 size_t local_symbol_count
,
883 const unsigned char* plocal_syms
,
884 Relocatable_relocs
* rr
);
886 // Emit relocations for a section.
888 relocate_relocs(const Relocate_info
<size
, big_endian
>*,
889 unsigned int sh_type
,
890 const unsigned char* prelocs
,
892 Output_section
* output_section
,
893 typename
elfcpp::Elf_types
<size
>::Elf_Off
894 offset_in_output_section
,
896 Address view_address
,
898 unsigned char* reloc_view
,
899 section_size_type reloc_view_size
);
901 // Return whether SYM is defined by the ABI.
903 do_is_defined_by_abi(const Symbol
* sym
) const
905 return strcmp(sym
->name(), "__tls_get_addr") == 0;
908 // Return the size of the GOT section, for incremental linking
912 gold_assert(this->got_
!= NULL
);
913 return this->got_
->data_size() + (this->biggot_
914 ? this->biggot_
->data_size() : 0);
917 // Get the PLT section.
918 const Output_data_plt_powerpc
<size
, big_endian
>*
921 gold_assert(this->plt_
!= NULL
);
925 // Get the IPLT section.
926 const Output_data_plt_powerpc
<size
, big_endian
>*
929 gold_assert(this->iplt_
!= NULL
);
933 // Get the LPLT section.
934 const Output_data_plt_powerpc
<size
, big_endian
>*
940 // Return the plt offset and section for the given global sym.
942 plt_off(const Symbol
* gsym
,
943 const Output_data_plt_powerpc
<size
, big_endian
>** sec
) const
945 if (gsym
->type() == elfcpp::STT_GNU_IFUNC
946 && gsym
->can_use_relative_reloc(false))
947 *sec
= this->iplt_section();
948 else if (branch_needs_plt_entry(gsym
))
949 *sec
= this->plt_section();
951 *sec
= this->lplt_section();
952 return gsym
->plt_offset();
955 // Return the plt offset and section for the given local sym.
957 plt_off(const Sized_relobj_file
<size
, big_endian
>* relobj
,
958 unsigned int local_sym_index
,
959 const Output_data_plt_powerpc
<size
, big_endian
>** sec
) const
961 const Symbol_value
<size
>* lsym
= relobj
->local_symbol(local_sym_index
);
962 if (lsym
->is_ifunc_symbol())
963 *sec
= this->iplt_section();
965 *sec
= this->lplt_section();
966 return relobj
->local_plt_offset(local_sym_index
);
969 // Get the .glink section.
970 const Output_data_glink
<size
, big_endian
>*
971 glink_section() const
973 gold_assert(this->glink_
!= NULL
);
977 Output_data_glink
<size
, big_endian
>*
980 gold_assert(this->glink_
!= NULL
);
984 bool has_glink() const
985 { return this->glink_
!= NULL
; }
987 // Get the GOT section.
988 const Output_data_got_powerpc
<size
, big_endian
>*
989 got_section(Got_type got_type
) const
991 gold_assert(this->got_
!= NULL
);
992 if (size
== 32 || (got_type
& GOT_TYPE_SMALL
))
994 gold_assert(this->biggot_
!= NULL
);
995 return this->biggot_
;
998 // Get the GOT section, creating it if necessary.
999 Output_data_got_powerpc
<size
, big_endian
>*
1000 got_section(Symbol_table
*, Layout
*, Got_type
);
1002 // The toc/got pointer reg will be set to this value.
1006 return this->got_
->address() + this->got_
->g_o_t();
1009 // Offset of base used to access the GOT/TOC relative to the GOT section.
1011 got_base_offset(Got_type got_type
) const
1013 if (size
== 32 || (got_type
& GOT_TYPE_SMALL
))
1014 return this->got_
->g_o_t();
1015 return this->toc_pointer() - this->biggot_
->address();
1019 do_make_elf_object(const std::string
&, Input_file
*, off_t
,
1020 const elfcpp::Ehdr
<size
, big_endian
>&);
1022 // Return the number of entries in the GOT.
1024 got_entry_count() const
1026 if (this->got_
== NULL
)
1028 return this->got_size() / (size
/ 8);
1031 // Return the number of entries in the PLT.
1033 plt_entry_count() const;
1035 // Return the offset of the first non-reserved PLT entry.
1037 first_plt_entry_offset() const
1041 if (this->abiversion() >= 2)
1046 // Return the size of each PLT entry.
1048 plt_entry_size() const
1052 if (this->abiversion() >= 2)
1057 Output_data_save_res
<size
, big_endian
>*
1058 savres_section() const
1060 return this->savres_section_
;
1063 // Add any special sections for this symbol to the gc work list.
1064 // For powerpc64, this adds the code section of a function
1067 do_gc_mark_symbol(Symbol_table
* symtab
, Symbol
* sym
) const;
1069 // Handle target specific gc actions when adding a gc reference from
1070 // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX
1071 // and DST_OFF. For powerpc64, this adds a referenc to the code
1072 // section of a function descriptor.
1074 do_gc_add_reference(Symbol_table
* symtab
,
1076 unsigned int src_shndx
,
1078 unsigned int dst_shndx
,
1079 Address dst_off
) const;
1081 typedef std::vector
<Stub_table
<size
, big_endian
>*> Stub_tables
;
1084 { return this->stub_tables_
; }
1086 const Output_data_brlt_powerpc
<size
, big_endian
>*
1087 brlt_section() const
1088 { return this->brlt_section_
; }
1091 add_branch_lookup_table(Address to
)
1093 unsigned int off
= this->branch_lookup_table_
.size() * (size
/ 8);
1094 this->branch_lookup_table_
.insert(std::make_pair(to
, off
));
1098 find_branch_lookup_table(Address to
)
1100 typename
Branch_lookup_table::const_iterator p
1101 = this->branch_lookup_table_
.find(to
);
1102 return p
== this->branch_lookup_table_
.end() ? invalid_address
: p
->second
;
1106 write_branch_lookup_table(unsigned char *oview
)
1108 for (typename
Branch_lookup_table::const_iterator p
1109 = this->branch_lookup_table_
.begin();
1110 p
!= this->branch_lookup_table_
.end();
1113 elfcpp::Swap
<size
, big_endian
>::writeval(oview
+ p
->second
, p
->first
);
1117 // Wrapper used after relax to define a local symbol in output data,
1118 // from the end if value < 0.
1120 define_local(Symbol_table
* symtab
, const char* name
,
1121 Output_data
* od
, Address value
, unsigned int symsize
)
1124 = symtab
->define_in_output_data(name
, NULL
, Symbol_table::PREDEFINED
,
1125 od
, value
, symsize
, elfcpp::STT_NOTYPE
,
1126 elfcpp::STB_LOCAL
, elfcpp::STV_HIDDEN
, 0,
1127 static_cast<Signed_address
>(value
) < 0,
1129 // We are creating this symbol late, so need to fix up things
1130 // done early in Layout::finalize.
1131 sym
->set_dynsym_index(-1U);
1135 set_power10_relocs()
1137 this->power10_relocs_
= true;
1141 power10_stubs() const
1143 return (this->power10_relocs_
1144 && (parameters
->options().power10_stubs_enum()
1145 != General_options::POWER10_STUBS_NO
));
1149 power10_stubs_auto() const
1151 return (parameters
->options().power10_stubs_enum()
1152 == General_options::POWER10_STUBS_AUTO
);
1156 plt_thread_safe() const
1157 { return this->plt_thread_safe_
; }
1160 plt_localentry0() const
1161 { return this->plt_localentry0_
; }
1164 has_localentry0() const
1165 { return this->has_localentry0_
; }
1168 set_has_localentry0()
1170 this->has_localentry0_
= true;
1174 is_elfv2_localentry0(const Symbol
* gsym
) const
1177 && this->abiversion() >= 2
1178 && this->plt_localentry0()
1179 && gsym
->type() == elfcpp::STT_FUNC
1180 && gsym
->is_defined()
1181 && gsym
->nonvis() >> 3 == 0
1182 && !gsym
->non_zero_localentry());
1186 is_elfv2_localentry0(const Sized_relobj_file
<size
, big_endian
>* object
,
1187 unsigned int r_sym
) const
1189 const Powerpc_relobj
<size
, big_endian
>* ppc_object
1190 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>(object
);
1193 && this->abiversion() >= 2
1194 && this->plt_localentry0()
1195 && ppc_object
->st_other(r_sym
) >> 5 == 0)
1197 const Symbol_value
<size
>* psymval
= object
->local_symbol(r_sym
);
1199 if (!psymval
->is_ifunc_symbol()
1200 && psymval
->input_shndx(&is_ordinary
) != elfcpp::SHN_UNDEF
1209 { return !this->no_tprel_opt_
&& parameters
->options().tls_optimize(); }
1213 { this->no_tprel_opt_
= true; }
1215 // Remember any symbols seen with non-zero localentry, even those
1216 // not providing a definition
1218 resolve(Symbol
* to
, const elfcpp::Sym
<size
, big_endian
>& sym
, Object
*,
1223 unsigned char st_other
= sym
.get_st_other();
1224 if ((st_other
& elfcpp::STO_PPC64_LOCAL_MASK
) != 0)
1225 to
->set_non_zero_localentry();
1227 // We haven't resolved anything, continue normal processing.
1233 { return this->processor_specific_flags() & elfcpp::EF_PPC64_ABI
; }
1236 set_abiversion(int ver
)
1238 elfcpp::Elf_Word flags
= this->processor_specific_flags();
1239 flags
&= ~elfcpp::EF_PPC64_ABI
;
1240 flags
|= ver
& elfcpp::EF_PPC64_ABI
;
1241 this->set_processor_specific_flags(flags
);
1245 tls_get_addr_opt() const
1246 { return this->tls_get_addr_opt_
; }
1249 tls_get_addr() const
1250 { return this->tls_get_addr_
; }
1252 // If optimizing __tls_get_addr calls, whether this is the
1253 // "__tls_get_addr" symbol.
1255 is_tls_get_addr_opt(const Symbol
* gsym
) const
1257 return this->tls_get_addr_opt_
&& (gsym
== this->tls_get_addr_
1258 || gsym
== this->tls_get_addr_opt_
);
1262 replace_tls_get_addr(const Symbol
* gsym
) const
1263 { return this->tls_get_addr_opt_
&& gsym
== this->tls_get_addr_
; }
1266 set_has_tls_get_addr_opt()
1267 { this->has_tls_get_addr_opt_
= true; }
1269 // Offset to toc save stack slot
1272 { return this->abiversion() < 2 ? 40 : 24; }
1274 // Offset to linker save stack slot. ELFv2 doesn't have a linker word,
1275 // so use the CR save slot. Used only by __tls_get_addr call stub,
1276 // relying on __tls_get_addr not saving CR itself.
1279 { return this->abiversion() < 2 ? 32 : 8; }
1281 // Merge object attributes from input object with those in the output.
1283 merge_object_attributes(const Object
*, const Attributes_section_data
*);
1286 symval_for_branch(const Symbol_table
* symtab
,
1287 const Sized_symbol
<size
>* gsym
,
1288 Powerpc_relobj
<size
, big_endian
>* object
,
1289 Address
*value
, unsigned int *dest_shndx
);
1305 : tls_get_addr_state_(NOT_EXPECTED
),
1306 relinfo_(NULL
), relnum_(0), r_offset_(0)
1311 if (this->tls_get_addr_state_
!= NOT_EXPECTED
)
1318 if (this->relinfo_
!= NULL
)
1319 gold_error_at_location(this->relinfo_
, this->relnum_
, this->r_offset_
,
1320 _("missing expected __tls_get_addr call"));
1324 expect_tls_get_addr_call(
1325 const Relocate_info
<size
, big_endian
>* relinfo
,
1329 this->tls_get_addr_state_
= EXPECTED
;
1330 this->relinfo_
= relinfo
;
1331 this->relnum_
= relnum
;
1332 this->r_offset_
= r_offset
;
1336 expect_tls_get_addr_call()
1337 { this->tls_get_addr_state_
= EXPECTED
; }
1340 skip_next_tls_get_addr_call()
1341 {this->tls_get_addr_state_
= SKIP
; }
1344 maybe_skip_tls_get_addr_call(Target_powerpc
<size
, big_endian
>* target
,
1345 unsigned int r_type
, const Symbol
* gsym
)
1348 = ((r_type
== elfcpp::R_POWERPC_REL24
1349 || (size
== 64 && r_type
== elfcpp::R_PPC64_REL24_NOTOC
)
1350 || r_type
== elfcpp::R_PPC64_REL24_P9NOTOC
1351 || r_type
== elfcpp::R_PPC_PLTREL24
1352 || is_plt16_reloc
<size
>(r_type
)
1353 || r_type
== elfcpp::R_PPC64_PLT_PCREL34
1354 || r_type
== elfcpp::R_PPC64_PLT_PCREL34_NOTOC
1355 || r_type
== elfcpp::R_POWERPC_PLTSEQ
1356 || r_type
== elfcpp::R_POWERPC_PLTCALL
1357 || r_type
== elfcpp::R_PPC64_PLTSEQ_NOTOC
1358 || r_type
== elfcpp::R_PPC64_PLTCALL_NOTOC
)
1360 && (gsym
== target
->tls_get_addr()
1361 || gsym
== target
->tls_get_addr_opt()));
1362 Tls_get_addr last_tls
= this->tls_get_addr_state_
;
1363 this->tls_get_addr_state_
= NOT_EXPECTED
;
1364 if (is_tls_call
&& last_tls
!= EXPECTED
)
1366 else if (!is_tls_call
&& last_tls
!= NOT_EXPECTED
)
1375 // What we're up to regarding calls to __tls_get_addr.
1376 // On powerpc, the branch and link insn making a call to
1377 // __tls_get_addr is marked with a relocation, R_PPC64_TLSGD,
1378 // R_PPC64_TLSLD, R_PPC_TLSGD or R_PPC_TLSLD, in addition to the
1379 // usual R_POWERPC_REL24 or R_PPC_PLTREL24 relocation on a call.
1380 // The marker relocation always comes first, and has the same
1381 // symbol as the reloc on the insn setting up the __tls_get_addr
1382 // argument. This ties the arg setup insn with the call insn,
1383 // allowing ld to safely optimize away the call. We check that
1384 // every call to __tls_get_addr has a marker relocation, and that
1385 // every marker relocation is on a call to __tls_get_addr.
1386 Tls_get_addr tls_get_addr_state_
;
1387 // Info about the last reloc for error message.
1388 const Relocate_info
<size
, big_endian
>* relinfo_
;
1393 // The class which scans relocations.
1394 class Scan
: protected Track_tls
1397 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
1400 : Track_tls(), issued_non_pic_error_(false)
1404 get_reference_flags(unsigned int r_type
, const Target_powerpc
* target
);
1407 local(Symbol_table
* symtab
, Layout
* layout
, Target_powerpc
* target
,
1408 Sized_relobj_file
<size
, big_endian
>* object
,
1409 unsigned int data_shndx
,
1410 Output_section
* output_section
,
1411 const elfcpp::Rela
<size
, big_endian
>& reloc
, unsigned int r_type
,
1412 const elfcpp::Sym
<size
, big_endian
>& lsym
,
1416 global(Symbol_table
* symtab
, Layout
* layout
, Target_powerpc
* target
,
1417 Sized_relobj_file
<size
, big_endian
>* object
,
1418 unsigned int data_shndx
,
1419 Output_section
* output_section
,
1420 const elfcpp::Rela
<size
, big_endian
>& reloc
, unsigned int r_type
,
1424 local_reloc_may_be_function_pointer(Symbol_table
* , Layout
* ,
1426 Sized_relobj_file
<size
, big_endian
>* relobj
,
1429 const elfcpp::Rela
<size
, big_endian
>& ,
1430 unsigned int r_type
,
1431 const elfcpp::Sym
<size
, big_endian
>&)
1433 // PowerPC64 .opd is not folded, so any identical function text
1434 // may be folded and we'll still keep function addresses distinct.
1435 // That means no reloc is of concern here.
1438 Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
1439 <Powerpc_relobj
<size
, big_endian
>*>(relobj
);
1440 if (ppcobj
->abiversion() == 1)
1443 // For 32-bit and ELFv2, conservatively assume anything but calls to
1444 // function code might be taking the address of the function.
1445 return !is_branch_reloc
<size
>(r_type
);
1449 global_reloc_may_be_function_pointer(Symbol_table
* , Layout
* ,
1451 Sized_relobj_file
<size
, big_endian
>* relobj
,
1454 const elfcpp::Rela
<size
, big_endian
>& ,
1455 unsigned int r_type
,
1461 Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
1462 <Powerpc_relobj
<size
, big_endian
>*>(relobj
);
1463 if (ppcobj
->abiversion() == 1)
1466 return !is_branch_reloc
<size
>(r_type
);
1470 reloc_needs_plt_for_ifunc(Target_powerpc
<size
, big_endian
>* target
,
1471 Sized_relobj_file
<size
, big_endian
>* object
,
1472 unsigned int r_type
, bool report_err
);
1476 unsupported_reloc_local(Sized_relobj_file
<size
, big_endian
>*,
1477 unsigned int r_type
);
1480 unsupported_reloc_global(Sized_relobj_file
<size
, big_endian
>*,
1481 unsigned int r_type
, Symbol
*);
1484 generate_tls_call(Symbol_table
* symtab
, Layout
* layout
,
1485 Target_powerpc
* target
);
1488 check_non_pic(Relobj
*, unsigned int r_type
);
1490 // Whether we have issued an error about a non-PIC compilation.
1491 bool issued_non_pic_error_
;
1494 // The class which implements relocation.
1495 class Relocate
: protected Track_tls
1498 // Use 'at' branch hints when true, 'y' when false.
1499 // FIXME maybe: set this with an option.
1500 static const bool is_isa_v2
= true;
1506 // Do a relocation. Return false if the caller should not issue
1507 // any warnings about this relocation.
1509 relocate(const Relocate_info
<size
, big_endian
>*, unsigned int,
1510 Target_powerpc
*, Output_section
*, size_t, const unsigned char*,
1511 const Sized_symbol
<size
>*, const Symbol_value
<size
>*,
1512 unsigned char*, typename
elfcpp::Elf_types
<size
>::Elf_Addr
,
1516 class Relocate_comdat_behavior
1519 // Decide what the linker should do for relocations that refer to
1520 // discarded comdat sections.
1521 inline Comdat_behavior
1522 get(const char* name
)
1524 gold::Default_comdat_behavior default_behavior
;
1525 Comdat_behavior ret
= default_behavior
.get(name
);
1526 if (ret
== CB_ERROR
)
1529 && (strcmp(name
, ".fixup") == 0
1530 || strcmp(name
, ".got2") == 0))
1533 && (strcmp(name
, ".opd") == 0
1534 || strcmp(name
, ".toc") == 0
1535 || strcmp(name
, ".toc1") == 0))
1542 // Optimize the TLS relocation type based on what we know about the
1543 // symbol. IS_FINAL is true if the final address of this symbol is
1544 // known at link time.
1546 tls::Tls_optimization
1547 optimize_tls_gd(bool is_final
)
1549 // If we are generating a shared library, then we can't do anything
1551 if (parameters
->options().shared()
1552 || !parameters
->options().tls_optimize())
1553 return tls::TLSOPT_NONE
;
1556 return tls::TLSOPT_TO_IE
;
1557 return tls::TLSOPT_TO_LE
;
1560 tls::Tls_optimization
1563 if (parameters
->options().shared()
1564 || !parameters
->options().tls_optimize())
1565 return tls::TLSOPT_NONE
;
1567 return tls::TLSOPT_TO_LE
;
1570 tls::Tls_optimization
1571 optimize_tls_ie(bool is_final
)
1574 || parameters
->options().shared()
1575 || !parameters
->options().tls_optimize())
1576 return tls::TLSOPT_NONE
;
1578 return tls::TLSOPT_TO_LE
;
1583 make_glink_section(Layout
*);
1585 // Create the PLT section.
1587 make_plt_section(Symbol_table
*, Layout
*);
1590 make_iplt_section(Symbol_table
*, Layout
*);
1593 make_lplt_section(Symbol_table
*, Layout
*);
1596 make_brlt_section(Layout
*);
1598 // Create a PLT entry for a global symbol.
1600 make_plt_entry(Symbol_table
*, Layout
*, Symbol
*);
1602 // Create a PLT entry for a local IFUNC symbol.
1604 make_local_ifunc_plt_entry(Symbol_table
*, Layout
*,
1605 Sized_relobj_file
<size
, big_endian
>*,
1608 // Create a PLT entry for a local non-IFUNC symbol.
1610 make_local_plt_entry(Symbol_table
*, Layout
*,
1611 Sized_relobj_file
<size
, big_endian
>*,
1615 make_local_plt_entry(Symbol_table
*, Layout
*, Symbol
*);
1617 // Create a GOT entry for local dynamic __tls_get_addr.
1619 tlsld_got_offset(Symbol_table
* symtab
, Layout
* layout
,
1620 Sized_relobj_file
<size
, big_endian
>* object
);
1623 tlsld_got_offset() const
1625 return this->tlsld_got_offset_
;
1628 // Get the dynamic reloc section, creating it if necessary.
1630 rela_dyn_section(Layout
*);
1632 // Similarly, but for ifunc symbols get the one for ifunc.
1634 rela_dyn_section(Symbol_table
*, Layout
*, bool for_ifunc
);
1636 // Copy a relocation against a global symbol.
1638 copy_reloc(Symbol_table
* symtab
, Layout
* layout
,
1639 Sized_relobj_file
<size
, big_endian
>* object
,
1640 unsigned int shndx
, Output_section
* output_section
,
1641 Symbol
* sym
, const elfcpp::Rela
<size
, big_endian
>& reloc
)
1643 unsigned int r_type
= elfcpp::elf_r_type
<size
>(reloc
.get_r_info());
1644 this->copy_relocs_
.copy_reloc(symtab
, layout
,
1645 symtab
->get_sized_symbol
<size
>(sym
),
1646 object
, shndx
, output_section
,
1647 r_type
, reloc
.get_r_offset(),
1648 reloc
.get_r_addend(),
1649 this->rela_dyn_section(layout
));
1652 // Look over all the input sections, deciding where to place stubs.
1654 group_sections(Layout
*, const Task
*, bool);
1656 // Sort output sections by address.
1657 struct Sort_sections
1660 operator()(const Output_section
* sec1
, const Output_section
* sec2
)
1661 { return sec1
->address() < sec2
->address(); }
1667 Branch_info(Powerpc_relobj
<size
, big_endian
>* ppc_object
,
1668 unsigned int data_shndx
,
1670 unsigned int r_type
,
1673 : object_(ppc_object
), shndx_(data_shndx
), offset_(r_offset
),
1674 r_type_(r_type
), tocsave_ (0), r_sym_(r_sym
), addend_(addend
)
1680 // Return whether this branch is going via a plt call stub, and if
1681 // so, mark it as having an R_PPC64_TOCSAVE.
1683 mark_pltcall(Powerpc_relobj
<size
, big_endian
>* ppc_object
,
1684 unsigned int shndx
, Address offset
,
1685 Target_powerpc
* target
, Symbol_table
* symtab
);
1687 // If this branch needs a plt call stub, or a long branch stub, make one.
1689 make_stub(Stub_table
<size
, big_endian
>*,
1690 Stub_table
<size
, big_endian
>*,
1691 Symbol_table
*) const;
1694 // The branch location..
1695 Powerpc_relobj
<size
, big_endian
>* object_
;
1696 unsigned int shndx_
;
1698 // ..and the branch type and destination.
1699 unsigned int r_type_
: 31;
1700 unsigned int tocsave_
: 1;
1701 unsigned int r_sym_
;
1705 // Information about this specific target which we pass to the
1706 // general Target structure.
1707 static Target::Target_info powerpc_info
;
1709 // The small GOT section used by ppc32, and by ppc64 for entries that
1710 // must be addresseed +/-32k from the got pointer.
1711 Output_data_got_powerpc
<size
, big_endian
>* got_
;
1712 // Another GOT section used for entries that can be addressed +/- 2G
1713 // from the got pointer.
1714 Output_data_got_powerpc
<size
, big_endian
>* biggot_
;
1716 // The PLT section. This is a container for a table of addresses,
1717 // and their relocations. Each address in the PLT has a dynamic
1718 // relocation (R_*_JMP_SLOT) and each address will have a
1719 // corresponding entry in .glink for lazy resolution of the PLT.
1720 // ppc32 initialises the PLT to point at the .glink entry, while
1721 // ppc64 leaves this to ld.so. To make a call via the PLT, the
1722 // linker adds a stub that loads the PLT entry into ctr then
1723 // branches to ctr. There may be more than one stub for each PLT
1724 // entry. DT_JMPREL points at the first PLT dynamic relocation and
1725 // DT_PLTRELSZ gives the total size of PLT dynamic relocations.
1726 Output_data_plt_powerpc
<size
, big_endian
>* plt_
;
1727 // The IPLT section. Like plt_, this is a container for a table of
1728 // addresses and their relocations, specifically for STT_GNU_IFUNC
1729 // functions that resolve locally (STT_GNU_IFUNC functions that
1730 // don't resolve locally go in PLT). Unlike plt_, these have no
1731 // entry in .glink for lazy resolution, and the relocation section
1732 // does not have a 1-1 correspondence with IPLT addresses. In fact,
1733 // the relocation section may contain relocations against
1734 // STT_GNU_IFUNC symbols at locations outside of IPLT. The
1735 // relocation section will appear at the end of other dynamic
1736 // relocations, so that ld.so applies these relocations after other
1737 // dynamic relocations. In a static executable, the relocation
1738 // section is emitted and marked with __rela_iplt_start and
1739 // __rela_iplt_end symbols.
1740 Output_data_plt_powerpc
<size
, big_endian
>* iplt_
;
1741 // A PLT style section for local, non-ifunc symbols
1742 Output_data_plt_powerpc
<size
, big_endian
>* lplt_
;
1743 // Section holding long branch destinations.
1744 Output_data_brlt_powerpc
<size
, big_endian
>* brlt_section_
;
1745 // The .glink section.
1746 Output_data_glink
<size
, big_endian
>* glink_
;
1747 // The dynamic reloc section.
1748 Reloc_section
* rela_dyn_
;
1749 // Relocs saved to avoid a COPY reloc.
1750 Powerpc_copy_relocs
<elfcpp::SHT_RELA
, size
, big_endian
> copy_relocs_
;
1751 // Offset of the GOT entry for local dynamic __tls_get_addr calls.
1752 unsigned int tlsld_got_offset_
;
1754 Stub_tables stub_tables_
;
1755 typedef Unordered_map
<Address
, unsigned int> Branch_lookup_table
;
1756 Branch_lookup_table branch_lookup_table_
;
1758 typedef std::vector
<Branch_info
> Branches
;
1759 Branches branch_info_
;
1760 Tocsave_loc tocsave_loc_
;
1762 bool power10_relocs_
;
1763 bool plt_thread_safe_
;
1764 bool plt_localentry0_
;
1765 bool plt_localentry0_init_
;
1766 bool has_localentry0_
;
1767 bool has_tls_get_addr_opt_
;
1771 int relax_fail_count_
;
1772 int32_t stub_group_size_
;
1774 Output_data_save_res
<size
, big_endian
> *savres_section_
;
1776 // The "__tls_get_addr" symbol, if present
1777 Symbol
* tls_get_addr_
;
1778 // If optimizing __tls_get_addr calls, the "__tls_get_addr_opt" symbol.
1779 Symbol
* tls_get_addr_opt_
;
1781 // Attributes in output.
1782 Attributes_section_data
* attributes_section_data_
;
1784 // Last input file to change various attribute tags
1785 const char* last_fp_
;
1786 const char* last_ld_
;
1787 const char* last_vec_
;
1788 const char* last_struct_
;
1792 Target::Target_info Target_powerpc
<32, true>::powerpc_info
=
1795 true, // is_big_endian
1796 elfcpp::EM_PPC
, // machine_code
1797 false, // has_make_symbol
1798 false, // has_resolve
1799 false, // has_code_fill
1800 true, // is_default_stack_executable
1801 false, // can_icf_inline_merge_sections
1803 "/usr/lib/ld.so.1", // dynamic_linker
1804 0x10000000, // default_text_segment_address
1805 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1806 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1807 false, // isolate_execinstr
1809 elfcpp::SHN_UNDEF
, // small_common_shndx
1810 elfcpp::SHN_UNDEF
, // large_common_shndx
1811 0, // small_common_section_flags
1812 0, // large_common_section_flags
1813 NULL
, // attributes_section
1814 NULL
, // attributes_vendor
1815 "_start", // entry_symbol_name
1816 32, // hash_entry_size
1817 elfcpp::SHT_PROGBITS
, // unwind_section_type
1821 Target::Target_info Target_powerpc
<32, false>::powerpc_info
=
1824 false, // is_big_endian
1825 elfcpp::EM_PPC
, // machine_code
1826 false, // has_make_symbol
1827 false, // has_resolve
1828 false, // has_code_fill
1829 true, // is_default_stack_executable
1830 false, // can_icf_inline_merge_sections
1832 "/usr/lib/ld.so.1", // dynamic_linker
1833 0x10000000, // default_text_segment_address
1834 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1835 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1836 false, // isolate_execinstr
1838 elfcpp::SHN_UNDEF
, // small_common_shndx
1839 elfcpp::SHN_UNDEF
, // large_common_shndx
1840 0, // small_common_section_flags
1841 0, // large_common_section_flags
1842 NULL
, // attributes_section
1843 NULL
, // attributes_vendor
1844 "_start", // entry_symbol_name
1845 32, // hash_entry_size
1846 elfcpp::SHT_PROGBITS
, // unwind_section_type
1850 Target::Target_info Target_powerpc
<64, true>::powerpc_info
=
1853 true, // is_big_endian
1854 elfcpp::EM_PPC64
, // machine_code
1855 false, // has_make_symbol
1856 true, // has_resolve
1857 false, // has_code_fill
1858 false, // is_default_stack_executable
1859 false, // can_icf_inline_merge_sections
1861 "/usr/lib/ld.so.1", // dynamic_linker
1862 0x10000000, // default_text_segment_address
1863 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1864 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1865 false, // isolate_execinstr
1867 elfcpp::SHN_UNDEF
, // small_common_shndx
1868 elfcpp::SHN_UNDEF
, // large_common_shndx
1869 0, // small_common_section_flags
1870 0, // large_common_section_flags
1871 NULL
, // attributes_section
1872 NULL
, // attributes_vendor
1873 "_start", // entry_symbol_name
1874 32, // hash_entry_size
1875 elfcpp::SHT_PROGBITS
, // unwind_section_type
1879 Target::Target_info Target_powerpc
<64, false>::powerpc_info
=
1882 false, // is_big_endian
1883 elfcpp::EM_PPC64
, // machine_code
1884 false, // has_make_symbol
1885 true, // has_resolve
1886 false, // has_code_fill
1887 false, // is_default_stack_executable
1888 false, // can_icf_inline_merge_sections
1890 "/usr/lib/ld.so.1", // dynamic_linker
1891 0x10000000, // default_text_segment_address
1892 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1893 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1894 false, // isolate_execinstr
1896 elfcpp::SHN_UNDEF
, // small_common_shndx
1897 elfcpp::SHN_UNDEF
, // large_common_shndx
1898 0, // small_common_section_flags
1899 0, // large_common_section_flags
1900 NULL
, // attributes_section
1901 NULL
, // attributes_vendor
1902 "_start", // entry_symbol_name
1903 32, // hash_entry_size
1904 elfcpp::SHT_PROGBITS
, // unwind_section_type
1909 is_branch_reloc(unsigned int r_type
)
1911 return (r_type
== elfcpp::R_POWERPC_REL24
1912 || (size
== 64 && r_type
== elfcpp::R_PPC64_REL24_NOTOC
)
1913 || r_type
== elfcpp::R_PPC64_REL24_P9NOTOC
1914 || r_type
== elfcpp::R_PPC_PLTREL24
1915 || r_type
== elfcpp::R_PPC_LOCAL24PC
1916 || r_type
== elfcpp::R_POWERPC_REL14
1917 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
1918 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
1919 || r_type
== elfcpp::R_POWERPC_ADDR24
1920 || r_type
== elfcpp::R_POWERPC_ADDR14
1921 || r_type
== elfcpp::R_POWERPC_ADDR14_BRTAKEN
1922 || r_type
== elfcpp::R_POWERPC_ADDR14_BRNTAKEN
);
1925 // Reloc resolves to plt entry.
1928 is_plt16_reloc(unsigned int r_type
)
1930 return (r_type
== elfcpp::R_POWERPC_PLT16_LO
1931 || r_type
== elfcpp::R_POWERPC_PLT16_HI
1932 || r_type
== elfcpp::R_POWERPC_PLT16_HA
1933 || (size
== 64 && r_type
== elfcpp::R_PPC64_PLT16_LO_DS
));
1936 // GOT_TYPE_STANDARD or GOT_TYPE_SMALL (ie. not TLS) GOT relocs
1938 is_got_reloc(unsigned int r_type
)
1940 return (r_type
== elfcpp::R_POWERPC_GOT16
1941 || r_type
== elfcpp::R_POWERPC_GOT16_LO
1942 || r_type
== elfcpp::R_POWERPC_GOT16_HI
1943 || r_type
== elfcpp::R_POWERPC_GOT16_HA
1944 || r_type
== elfcpp::R_PPC64_GOT16_DS
1945 || r_type
== elfcpp::R_PPC64_GOT16_LO_DS
1946 || r_type
== elfcpp::R_PPC64_GOT_PCREL34
);
1949 // If INSN is an opcode that may be used with an @tls operand, return
1950 // the transformed insn for TLS optimisation, otherwise return 0. If
1951 // REG is non-zero only match an insn with RB or RA equal to REG.
1953 at_tls_transform(uint32_t insn
, unsigned int reg
)
1955 if ((insn
& (0x3f << 26)) != 31 << 26)
1959 if (reg
== 0 || ((insn
>> 11) & 0x1f) == reg
)
1960 rtra
= insn
& ((1 << 26) - (1 << 16));
1961 else if (((insn
>> 16) & 0x1f) == reg
)
1962 rtra
= (insn
& (0x1f << 21)) | ((insn
& (0x1f << 11)) << 5);
1966 if ((insn
& (0x3ff << 1)) == 266 << 1)
1969 else if ((insn
& (0x1f << 1)) == 23 << 1
1970 && ((insn
& (0x1f << 6)) < 14 << 6
1971 || ((insn
& (0x1f << 6)) >= 16 << 6
1972 && (insn
& (0x1f << 6)) < 24 << 6)))
1973 // load and store indexed -> dform
1974 insn
= (32 | ((insn
>> 6) & 0x1f)) << 26;
1975 else if ((insn
& (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
1976 // ldx, ldux, stdx, stdux -> ld, ldu, std, stdu
1977 insn
= ((58 | ((insn
>> 6) & 4)) << 26) | ((insn
>> 6) & 1);
1978 else if ((insn
& (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
1980 insn
= (58 << 26) | 2;
1988 template<int size
, bool big_endian
>
1989 class Powerpc_relocate_functions
2009 typedef Powerpc_relocate_functions
<size
, big_endian
> This
;
2010 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
2011 typedef typename
elfcpp::Elf_types
<size
>::Elf_Swxword SignedAddress
;
2013 template<int valsize
>
2015 has_overflow_signed(Address value
)
2017 // limit = 1 << (valsize - 1) without shift count exceeding size of type
2018 Address limit
= static_cast<Address
>(1) << ((valsize
- 1) >> 1);
2019 limit
<<= ((valsize
- 1) >> 1);
2020 limit
<<= ((valsize
- 1) - 2 * ((valsize
- 1) >> 1));
2021 return value
+ limit
> (limit
<< 1) - 1;
2024 template<int valsize
>
2026 has_overflow_unsigned(Address value
)
2028 Address limit
= static_cast<Address
>(1) << ((valsize
- 1) >> 1);
2029 limit
<<= ((valsize
- 1) >> 1);
2030 limit
<<= ((valsize
- 1) - 2 * ((valsize
- 1) >> 1));
2031 return value
> (limit
<< 1) - 1;
2034 template<int valsize
>
2036 has_overflow_bitfield(Address value
)
2038 return (has_overflow_unsigned
<valsize
>(value
)
2039 && has_overflow_signed
<valsize
>(value
));
2042 template<int valsize
>
2043 static inline Status
2044 overflowed(Address value
, Overflow_check overflow
)
2046 if (overflow
== CHECK_SIGNED
)
2048 if (has_overflow_signed
<valsize
>(value
))
2049 return STATUS_OVERFLOW
;
2051 else if (overflow
== CHECK_UNSIGNED
)
2053 if (has_overflow_unsigned
<valsize
>(value
))
2054 return STATUS_OVERFLOW
;
2056 else if (overflow
== CHECK_BITFIELD
)
2058 if (has_overflow_bitfield
<valsize
>(value
))
2059 return STATUS_OVERFLOW
;
2064 // Do a simple RELA relocation
2065 template<int fieldsize
, int valsize
>
2066 static inline Status
2067 rela(unsigned char* view
, Address value
, Overflow_check overflow
)
2069 typedef typename
elfcpp::Swap
<fieldsize
, big_endian
>::Valtype Valtype
;
2070 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
2071 elfcpp::Swap
<fieldsize
, big_endian
>::writeval(wv
, value
);
2072 return overflowed
<valsize
>(value
, overflow
);
2075 template<int fieldsize
, int valsize
>
2076 static inline Status
2077 rela(unsigned char* view
,
2078 unsigned int right_shift
,
2079 typename
elfcpp::Valtype_base
<fieldsize
>::Valtype dst_mask
,
2081 Overflow_check overflow
)
2083 typedef typename
elfcpp::Swap
<fieldsize
, big_endian
>::Valtype Valtype
;
2084 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
2085 Valtype val
= elfcpp::Swap
<fieldsize
, big_endian
>::readval(wv
);
2086 if (overflow
== CHECK_SIGNED
)
2087 value
= static_cast<SignedAddress
>(value
) >> right_shift
;
2089 value
= value
>> right_shift
;
2090 Valtype reloc
= value
;
2093 elfcpp::Swap
<fieldsize
, big_endian
>::writeval(wv
, val
| reloc
);
2094 return overflowed
<valsize
>(value
, overflow
);
2097 // Do a simple RELA relocation, unaligned.
2098 template<int fieldsize
, int valsize
>
2099 static inline Status
2100 rela_ua(unsigned char* view
, Address value
, Overflow_check overflow
)
2102 elfcpp::Swap_unaligned
<fieldsize
, big_endian
>::writeval(view
, value
);
2103 return overflowed
<valsize
>(value
, overflow
);
2106 template<int fieldsize
, int valsize
>
2107 static inline Status
2108 rela_ua(unsigned char* view
,
2109 unsigned int right_shift
,
2110 typename
elfcpp::Valtype_base
<fieldsize
>::Valtype dst_mask
,
2112 Overflow_check overflow
)
2114 typedef typename
elfcpp::Swap_unaligned
<fieldsize
, big_endian
>::Valtype
2116 Valtype val
= elfcpp::Swap
<fieldsize
, big_endian
>::readval(view
);
2117 if (overflow
== CHECK_SIGNED
)
2118 value
= static_cast<SignedAddress
>(value
) >> right_shift
;
2120 value
= value
>> right_shift
;
2121 Valtype reloc
= value
;
2124 elfcpp::Swap_unaligned
<fieldsize
, big_endian
>::writeval(view
, val
| reloc
);
2125 return overflowed
<valsize
>(value
, overflow
);
2129 // R_PPC64_ADDR64: (Symbol + Addend)
2131 addr64(unsigned char* view
, Address value
)
2132 { This::template rela
<64,64>(view
, value
, CHECK_NONE
); }
2134 // R_PPC64_UADDR64: (Symbol + Addend) unaligned
2136 addr64_u(unsigned char* view
, Address value
)
2137 { This::template rela_ua
<64,64>(view
, value
, CHECK_NONE
); }
2139 // R_POWERPC_ADDR32: (Symbol + Addend)
2140 static inline Status
2141 addr32(unsigned char* view
, Address value
, Overflow_check overflow
)
2142 { return This::template rela
<32,32>(view
, value
, overflow
); }
2144 // R_POWERPC_UADDR32: (Symbol + Addend) unaligned
2145 static inline Status
2146 addr32_u(unsigned char* view
, Address value
, Overflow_check overflow
)
2147 { return This::template rela_ua
<32,32>(view
, value
, overflow
); }
2149 // R_POWERPC_ADDR24: (Symbol + Addend) & 0x3fffffc
2150 static inline Status
2151 addr24(unsigned char* view
, Address value
, Overflow_check overflow
)
2153 Status stat
= This::template rela
<32,26>(view
, 0, 0x03fffffc,
2155 if (overflow
!= CHECK_NONE
&& (value
& 3) != 0)
2156 stat
= STATUS_OVERFLOW
;
2160 // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff
2161 static inline Status
2162 addr16(unsigned char* view
, Address value
, Overflow_check overflow
)
2163 { return This::template rela
<16,16>(view
, value
, overflow
); }
2165 // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff, unaligned
2166 static inline Status
2167 addr16_u(unsigned char* view
, Address value
, Overflow_check overflow
)
2168 { return This::template rela_ua
<16,16>(view
, value
, overflow
); }
2170 // R_POWERPC_ADDR16_DS: (Symbol + Addend) & 0xfffc
2171 static inline Status
2172 addr16_ds(unsigned char* view
, Address value
, Overflow_check overflow
)
2174 Status stat
= This::template rela
<16,16>(view
, 0, 0xfffc, value
, overflow
);
2175 if ((value
& 3) != 0)
2176 stat
= STATUS_OVERFLOW
;
2180 // R_POWERPC_ADDR16_DQ: (Symbol + Addend) & 0xfff0
2181 static inline Status
2182 addr16_dq(unsigned char* view
, Address value
, Overflow_check overflow
)
2184 Status stat
= This::template rela
<16,16>(view
, 0, 0xfff0, value
, overflow
);
2185 if ((value
& 15) != 0)
2186 stat
= STATUS_OVERFLOW
;
2190 // R_POWERPC_ADDR16_HI: ((Symbol + Addend) >> 16) & 0xffff
2192 addr16_hi(unsigned char* view
, Address value
)
2193 { This::template rela
<16,16>(view
, 16, 0xffff, value
, CHECK_NONE
); }
2195 // R_POWERPC_ADDR16_HA: ((Symbol + Addend + 0x8000) >> 16) & 0xffff
2197 addr16_ha(unsigned char* view
, Address value
)
2198 { This::addr16_hi(view
, value
+ 0x8000); }
2200 // R_POWERPC_ADDR16_HIGHER: ((Symbol + Addend) >> 32) & 0xffff
2202 addr16_hi2(unsigned char* view
, Address value
)
2203 { This::template rela
<16,16>(view
, 32, 0xffff, value
, CHECK_NONE
); }
2205 // R_POWERPC_ADDR16_HIGHERA: ((Symbol + Addend + 0x8000) >> 32) & 0xffff
2207 addr16_ha2(unsigned char* view
, Address value
)
2208 { This::addr16_hi2(view
, value
+ 0x8000); }
2210 // R_POWERPC_ADDR16_HIGHEST: ((Symbol + Addend) >> 48) & 0xffff
2212 addr16_hi3(unsigned char* view
, Address value
)
2213 { This::template rela
<16,16>(view
, 48, 0xffff, value
, CHECK_NONE
); }
2215 // R_POWERPC_ADDR16_HIGHESTA: ((Symbol + Addend + 0x8000) >> 48) & 0xffff
2217 addr16_ha3(unsigned char* view
, Address value
)
2218 { This::addr16_hi3(view
, value
+ 0x8000); }
2220 // R_POWERPC_ADDR14: (Symbol + Addend) & 0xfffc
2221 static inline Status
2222 addr14(unsigned char* view
, Address value
, Overflow_check overflow
)
2224 Status stat
= This::template rela
<32,16>(view
, 0, 0xfffc, value
, overflow
);
2225 if (overflow
!= CHECK_NONE
&& (value
& 3) != 0)
2226 stat
= STATUS_OVERFLOW
;
2230 // R_POWERPC_REL16DX_HA
2231 static inline Status
2232 addr16dx_ha(unsigned char *view
, Address value
, Overflow_check overflow
)
2234 typedef typename
elfcpp::Swap
<32, big_endian
>::Valtype Valtype
;
2235 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
2236 Valtype val
= elfcpp::Swap
<32, big_endian
>::readval(wv
);
2238 value
= static_cast<SignedAddress
>(value
) >> 16;
2239 val
|= (value
& 0xffc1) | ((value
& 0x3e) << 15);
2240 elfcpp::Swap
<32, big_endian
>::writeval(wv
, val
);
2241 return overflowed
<16>(value
, overflow
);
2245 static inline Status
2246 addr34(unsigned char *view
, uint64_t value
, Overflow_check overflow
)
2248 Status stat
= This::template rela
<32,18>(view
, 16, 0x3ffff,
2250 This::rela
<32,16>(view
+ 4, 0, 0xffff, value
, CHECK_NONE
);
2256 addr34_hi(unsigned char *view
, uint64_t value
)
2257 { This::addr34(view
, value
>> 34, CHECK_NONE
);}
2261 addr34_ha(unsigned char *view
, uint64_t value
)
2262 { This::addr34_hi(view
, value
+ (1ULL << 33));}
2265 static inline Status
2266 addr28(unsigned char *view
, uint64_t value
, Overflow_check overflow
)
2268 Status stat
= This::template rela
<32,12>(view
, 16, 0xfff,
2270 This::rela
<32,16>(view
+ 4, 0, 0xffff, value
, CHECK_NONE
);
2274 // R_PPC64_ADDR16_HIGHER34
2276 addr16_higher34(unsigned char* view
, uint64_t value
)
2277 { This::addr16(view
, value
>> 34, CHECK_NONE
); }
2279 // R_PPC64_ADDR16_HIGHERA34
2281 addr16_highera34(unsigned char* view
, uint64_t value
)
2282 { This::addr16_higher34(view
, value
+ (1ULL << 33)); }
2284 // R_PPC64_ADDR16_HIGHEST34
2286 addr16_highest34(unsigned char* view
, uint64_t value
)
2287 { This::addr16(view
, value
>> 50, CHECK_NONE
); }
2289 // R_PPC64_ADDR16_HIGHESTA34
2291 addr16_highesta34(unsigned char* view
, uint64_t value
)
2292 { This::addr16_highest34(view
, value
+ (1ULL << 33)); }
2295 // Set ABI version for input and output.
2297 template<int size
, bool big_endian
>
2299 Powerpc_relobj
<size
, big_endian
>::set_abiversion(int ver
)
2301 this->e_flags_
|= ver
;
2302 if (this->abiversion() != 0)
2304 Target_powerpc
<size
, big_endian
>* target
=
2305 static_cast<Target_powerpc
<size
, big_endian
>*>(
2306 parameters
->sized_target
<size
, big_endian
>());
2307 if (target
->abiversion() == 0)
2308 target
->set_abiversion(this->abiversion());
2309 else if (target
->abiversion() != this->abiversion())
2310 gold_error(_("%s: ABI version %d is not compatible "
2311 "with ABI version %d output"),
2312 this->name().c_str(),
2313 this->abiversion(), target
->abiversion());
2318 // Stash away the index of .got2, .opd, .rela.toc, and .toc in a
2319 // relocatable object, if such sections exists.
2321 template<int size
, bool big_endian
>
2323 Powerpc_relobj
<size
, big_endian
>::do_find_special_sections(
2324 Read_symbols_data
* sd
)
2326 const unsigned char* const pshdrs
= sd
->section_headers
->data();
2327 const unsigned char* namesu
= sd
->section_names
->data();
2328 const char* names
= reinterpret_cast<const char*>(namesu
);
2329 section_size_type names_size
= sd
->section_names_size
;
2330 const unsigned char* s
;
2332 s
= this->template find_shdr
<size
, big_endian
>(pshdrs
,
2333 size
== 32 ? ".got2" : ".opd",
2334 names
, names_size
, NULL
);
2337 unsigned int ndx
= (s
- pshdrs
) / elfcpp::Elf_sizes
<size
>::shdr_size
;
2338 this->special_
= ndx
;
2341 if (this->abiversion() == 0)
2342 this->set_abiversion(1);
2343 else if (this->abiversion() > 1)
2344 gold_error(_("%s: .opd invalid in abiv%d"),
2345 this->name().c_str(), this->abiversion());
2350 s
= this->template find_shdr
<size
, big_endian
>(pshdrs
, ".rela.toc",
2351 names
, names_size
, NULL
);
2354 unsigned int ndx
= (s
- pshdrs
) / elfcpp::Elf_sizes
<size
>::shdr_size
;
2355 this->relatoc_
= ndx
;
2356 typename
elfcpp::Shdr
<size
, big_endian
> shdr(s
);
2357 this->toc_
= this->adjust_shndx(shdr
.get_sh_info());
2360 return Sized_relobj_file
<size
, big_endian
>::do_find_special_sections(sd
);
2363 // Examine .rela.opd to build info about function entry points.
2365 template<int size
, bool big_endian
>
2367 Powerpc_relobj
<size
, big_endian
>::scan_opd_relocs(
2369 const unsigned char* prelocs
,
2370 const unsigned char* plocal_syms
)
2374 typedef typename
elfcpp::Rela
<size
, big_endian
> Reltype
;
2375 const int reloc_size
= elfcpp::Elf_sizes
<size
>::rela_size
;
2376 const int sym_size
= elfcpp::Elf_sizes
<size
>::sym_size
;
2377 Address expected_off
= 0;
2378 bool regular
= true;
2379 unsigned int opd_ent_size
= 0;
2381 for (size_t i
= 0; i
< reloc_count
; ++i
, prelocs
+= reloc_size
)
2383 Reltype
reloc(prelocs
);
2384 typename
elfcpp::Elf_types
<size
>::Elf_WXword r_info
2385 = reloc
.get_r_info();
2386 unsigned int r_type
= elfcpp::elf_r_type
<size
>(r_info
);
2387 if (r_type
== elfcpp::R_PPC64_ADDR64
)
2389 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(r_info
);
2390 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
;
2393 if (r_sym
< this->local_symbol_count())
2395 typename
elfcpp::Sym
<size
, big_endian
>
2396 lsym(plocal_syms
+ r_sym
* sym_size
);
2397 shndx
= lsym
.get_st_shndx();
2398 shndx
= this->adjust_sym_shndx(r_sym
, shndx
, &is_ordinary
);
2399 value
= lsym
.get_st_value();
2402 shndx
= this->symbol_section_and_value(r_sym
, &value
,
2404 this->set_opd_ent(reloc
.get_r_offset(), shndx
,
2405 value
+ reloc
.get_r_addend());
2408 expected_off
= reloc
.get_r_offset();
2409 opd_ent_size
= expected_off
;
2411 else if (expected_off
!= reloc
.get_r_offset())
2413 expected_off
+= opd_ent_size
;
2415 else if (r_type
== elfcpp::R_PPC64_TOC
)
2417 if (expected_off
- opd_ent_size
+ 8 != reloc
.get_r_offset())
2422 gold_warning(_("%s: unexpected reloc type %u in .opd section"),
2423 this->name().c_str(), r_type
);
2427 if (reloc_count
<= 2)
2428 opd_ent_size
= this->section_size(this->opd_shndx());
2429 if (opd_ent_size
!= 24 && opd_ent_size
!= 16)
2433 gold_warning(_("%s: .opd is not a regular array of opd entries"),
2434 this->name().c_str());
2440 // Returns true if a code sequence loading the TOC entry at VALUE
2441 // relative to the TOC pointer can be converted into code calculating
2442 // a TOC pointer relative offset.
2443 // If so, the TOC pointer relative offset is stored to VALUE.
2445 template<int size
, bool big_endian
>
2447 Powerpc_relobj
<size
, big_endian
>::make_toc_relative(
2448 Target_powerpc
<size
, big_endian
>* target
,
2454 // With -mcmodel=medium code it is quite possible to have
2455 // toc-relative relocs referring to objects outside the TOC.
2456 // Don't try to look at a non-existent TOC.
2457 if (this->toc_shndx() == 0
2458 || this->output_section(this->toc_shndx()) == 0)
2461 // Convert VALUE back to an address by adding got_base (see below),
2462 // then to an offset in the TOC by subtracting the TOC output
2463 // section address and the TOC output offset.
2464 Address off
= (*value
+ target
->toc_pointer()
2465 - this->output_section(this->toc_shndx())->address()
2466 - this->output_section_offset(this->toc_shndx()));
2467 // Is this offset in the TOC? -mcmodel=medium code may be using
2468 // TOC relative access to variables outside the TOC. Those of
2469 // course can't be optimized. We also don't try to optimize code
2470 // that is using a different object's TOC.
2471 if (off
>= this->section_size(this->toc_shndx()))
2474 if (this->no_toc_opt(off
))
2477 section_size_type vlen
;
2478 unsigned char* view
= this->get_output_view(this->toc_shndx(), &vlen
);
2479 Address addr
= elfcpp::Swap
<size
, big_endian
>::readval(view
+ off
);
2481 Address got_base
= target
->toc_pointer();
2483 if (addr
+ (uint64_t) 0x80008000 >= (uint64_t) 1 << 32)
2490 template<int size
, bool big_endian
>
2492 Powerpc_relobj
<size
, big_endian
>::make_got_relative(
2493 Target_powerpc
<size
, big_endian
>* target
,
2494 const Symbol_value
<size
>* psymval
,
2498 Address addr
= psymval
->value(this, addend
);
2499 Address got_base
= target
->toc_pointer();
2501 if (addr
+ 0x80008000 > 0xffffffff)
2508 // Perform the Sized_relobj_file method, then set up opd info from
2511 template<int size
, bool big_endian
>
2513 Powerpc_relobj
<size
, big_endian
>::do_read_relocs(Read_relocs_data
* rd
)
2515 Sized_relobj_file
<size
, big_endian
>::do_read_relocs(rd
);
2518 for (Read_relocs_data::Relocs_list::iterator p
= rd
->relocs
.begin();
2519 p
!= rd
->relocs
.end();
2522 if (p
->data_shndx
== this->opd_shndx())
2524 uint64_t opd_size
= this->section_size(this->opd_shndx());
2525 gold_assert(opd_size
== static_cast<size_t>(opd_size
));
2528 this->init_opd(opd_size
);
2529 this->scan_opd_relocs(p
->reloc_count
, p
->contents
->data(),
2530 rd
->local_symbols
->data());
2538 // Read the symbols then set up st_other vector.
2540 template<int size
, bool big_endian
>
2542 Powerpc_relobj
<size
, big_endian
>::do_read_symbols(Read_symbols_data
* sd
)
2544 this->base_read_symbols(sd
);
2545 if (this->input_file()->format() != Input_file::FORMAT_ELF
)
2549 const int shdr_size
= elfcpp::Elf_sizes
<size
>::shdr_size
;
2550 const unsigned char* const pshdrs
= sd
->section_headers
->data();
2551 const unsigned int loccount
= this->do_local_symbol_count();
2554 this->st_other_
.resize(loccount
);
2555 const int sym_size
= elfcpp::Elf_sizes
<size
>::sym_size
;
2556 off_t locsize
= loccount
* sym_size
;
2557 const unsigned int symtab_shndx
= this->symtab_shndx();
2558 const unsigned char *psymtab
= pshdrs
+ symtab_shndx
* shdr_size
;
2559 typename
elfcpp::Shdr
<size
, big_endian
> shdr(psymtab
);
2560 const unsigned char* psyms
= this->get_view(shdr
.get_sh_offset(),
2561 locsize
, true, false);
2563 for (unsigned int i
= 1; i
< loccount
; ++i
, psyms
+= sym_size
)
2565 elfcpp::Sym
<size
, big_endian
> sym(psyms
);
2566 unsigned char st_other
= sym
.get_st_other();
2567 this->st_other_
[i
] = st_other
;
2568 if ((st_other
& elfcpp::STO_PPC64_LOCAL_MASK
) != 0)
2570 if (this->abiversion() == 0)
2571 this->set_abiversion(2);
2572 else if (this->abiversion() < 2)
2573 gold_error(_("%s: local symbol %d has invalid st_other"
2574 " for ABI version 1"),
2575 this->name().c_str(), i
);
2581 const size_t shdr_size
= elfcpp::Elf_sizes
<size
>::shdr_size
;
2582 const unsigned char* ps
= sd
->section_headers
->data() + shdr_size
;
2583 bool merge_attributes
= false;
2584 for (unsigned int i
= 1; i
< this->shnum(); ++i
, ps
+= shdr_size
)
2586 elfcpp::Shdr
<size
, big_endian
> shdr(ps
);
2587 switch (shdr
.get_sh_type())
2589 case elfcpp::SHT_GNU_ATTRIBUTES
:
2591 gold_assert(this->attributes_section_data_
== NULL
);
2592 section_offset_type section_offset
= shdr
.get_sh_offset();
2593 section_size_type section_size
=
2594 convert_to_section_size_type(shdr
.get_sh_size());
2595 const unsigned char* view
=
2596 this->get_view(section_offset
, section_size
, true, false);
2597 this->attributes_section_data_
=
2598 new Attributes_section_data(view
, section_size
);
2602 case elfcpp::SHT_SYMTAB
:
2604 // Sometimes an object has no contents except the section
2605 // name string table and an empty symbol table with the
2606 // undefined symbol. We don't want to merge
2607 // processor-specific flags from such an object.
2608 const typename
elfcpp::Elf_types
<size
>::Elf_WXword sym_size
=
2609 elfcpp::Elf_sizes
<size
>::sym_size
;
2610 if (shdr
.get_sh_size() > sym_size
)
2611 merge_attributes
= true;
2615 case elfcpp::SHT_STRTAB
:
2619 merge_attributes
= true;
2624 if (!merge_attributes
)
2626 // Should rarely happen.
2627 delete this->attributes_section_data_
;
2628 this->attributes_section_data_
= NULL
;
2632 template<int size
, bool big_endian
>
2634 Powerpc_dynobj
<size
, big_endian
>::set_abiversion(int ver
)
2636 this->e_flags_
|= ver
;
2637 if (this->abiversion() != 0)
2639 Target_powerpc
<size
, big_endian
>* target
=
2640 static_cast<Target_powerpc
<size
, big_endian
>*>(
2641 parameters
->sized_target
<size
, big_endian
>());
2642 if (target
->abiversion() == 0)
2643 target
->set_abiversion(this->abiversion());
2644 else if (target
->abiversion() != this->abiversion())
2645 gold_error(_("%s: ABI version %d is not compatible "
2646 "with ABI version %d output"),
2647 this->name().c_str(),
2648 this->abiversion(), target
->abiversion());
2653 // Call Sized_dynobj::base_read_symbols to read the symbols then
2654 // read .opd from a dynamic object, filling in opd_ent_ vector,
2656 template<int size
, bool big_endian
>
2658 Powerpc_dynobj
<size
, big_endian
>::do_read_symbols(Read_symbols_data
* sd
)
2660 this->base_read_symbols(sd
);
2661 const size_t shdr_size
= elfcpp::Elf_sizes
<size
>::shdr_size
;
2662 const unsigned char* ps
=
2663 sd
->section_headers
->data() + shdr_size
* (this->shnum() - 1);
2664 for (unsigned int i
= this->shnum(); i
> 0; --i
, ps
-= shdr_size
)
2666 elfcpp::Shdr
<size
, big_endian
> shdr(ps
);
2667 if (shdr
.get_sh_type() == elfcpp::SHT_GNU_ATTRIBUTES
)
2669 section_offset_type section_offset
= shdr
.get_sh_offset();
2670 section_size_type section_size
=
2671 convert_to_section_size_type(shdr
.get_sh_size());
2672 const unsigned char* view
=
2673 this->get_view(section_offset
, section_size
, true, false);
2674 this->attributes_section_data_
=
2675 new Attributes_section_data(view
, section_size
);
2681 const unsigned char* const pshdrs
= sd
->section_headers
->data();
2682 const unsigned char* namesu
= sd
->section_names
->data();
2683 const char* names
= reinterpret_cast<const char*>(namesu
);
2684 const unsigned char* s
= NULL
;
2685 const unsigned char* opd
;
2686 section_size_type opd_size
;
2688 // Find and read .opd section.
2691 s
= this->template find_shdr
<size
, big_endian
>(pshdrs
, ".opd", names
,
2692 sd
->section_names_size
,
2697 typename
elfcpp::Shdr
<size
, big_endian
> shdr(s
);
2698 if (shdr
.get_sh_type() == elfcpp::SHT_PROGBITS
2699 && (shdr
.get_sh_flags() & elfcpp::SHF_ALLOC
) != 0)
2701 if (this->abiversion() == 0)
2702 this->set_abiversion(1);
2703 else if (this->abiversion() > 1)
2704 gold_error(_("%s: .opd invalid in abiv%d"),
2705 this->name().c_str(), this->abiversion());
2707 this->opd_shndx_
= (s
- pshdrs
) / shdr_size
;
2708 this->opd_address_
= shdr
.get_sh_addr();
2709 opd_size
= convert_to_section_size_type(shdr
.get_sh_size());
2710 opd
= this->get_view(shdr
.get_sh_offset(), opd_size
,
2716 // Build set of executable sections.
2717 // Using a set is probably overkill. There is likely to be only
2718 // a few executable sections, typically .init, .text and .fini,
2719 // and they are generally grouped together.
2720 typedef std::set
<Sec_info
> Exec_sections
;
2721 Exec_sections exec_sections
;
2723 for (unsigned int i
= 1; i
< this->shnum(); ++i
, s
+= shdr_size
)
2725 typename
elfcpp::Shdr
<size
, big_endian
> shdr(s
);
2726 if (shdr
.get_sh_type() == elfcpp::SHT_PROGBITS
2727 && ((shdr
.get_sh_flags()
2728 & (elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
))
2729 == (elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
))
2730 && shdr
.get_sh_size() != 0)
2732 exec_sections
.insert(Sec_info(shdr
.get_sh_addr(),
2733 shdr
.get_sh_size(), i
));
2736 if (exec_sections
.empty())
2739 // Look over the OPD entries. This is complicated by the fact
2740 // that some binaries will use two-word entries while others
2741 // will use the standard three-word entries. In most cases
2742 // the third word (the environment pointer for languages like
2743 // Pascal) is unused and will be zero. If the third word is
2744 // used it should not be pointing into executable sections,
2746 this->init_opd(opd_size
);
2747 for (const unsigned char* p
= opd
; p
< opd
+ opd_size
; p
+= 8)
2749 typedef typename
elfcpp::Swap
<64, big_endian
>::Valtype Valtype
;
2750 const Valtype
* valp
= reinterpret_cast<const Valtype
*>(p
);
2751 Valtype val
= elfcpp::Swap
<64, big_endian
>::readval(valp
);
2753 // Chances are that this is the third word of an OPD entry.
2755 typename
Exec_sections::const_iterator e
2756 = exec_sections
.upper_bound(Sec_info(val
, 0, 0));
2757 if (e
!= exec_sections
.begin())
2760 if (e
->start
<= val
&& val
< e
->start
+ e
->len
)
2762 // We have an address in an executable section.
2763 // VAL ought to be the function entry, set it up.
2764 this->set_opd_ent(p
- opd
, e
->shndx
, val
);
2765 // Skip second word of OPD entry, the TOC pointer.
2769 // If we didn't match any executable sections, we likely
2770 // have a non-zero third word in the OPD entry.
2775 // Relocate sections.
2777 template<int size
, bool big_endian
>
2779 Powerpc_relobj
<size
, big_endian
>::do_relocate_sections(
2780 const Symbol_table
* symtab
, const Layout
* layout
,
2781 const unsigned char* pshdrs
, Output_file
* of
,
2782 typename Sized_relobj_file
<size
, big_endian
>::Views
* pviews
)
2784 unsigned int start
= 1;
2786 && this->relatoc_
!= 0
2787 && !parameters
->options().relocatable())
2789 // Relocate .toc first.
2790 this->relocate_section_range(symtab
, layout
, pshdrs
, of
, pviews
,
2791 this->relatoc_
, this->relatoc_
);
2792 this->relocate_section_range(symtab
, layout
, pshdrs
, of
, pviews
,
2793 1, this->relatoc_
- 1);
2794 start
= this->relatoc_
+ 1;
2796 this->relocate_section_range(symtab
, layout
, pshdrs
, of
, pviews
,
2797 start
, this->shnum() - 1);
2800 // Set up some symbols.
2802 template<int size
, bool big_endian
>
2804 Target_powerpc
<size
, big_endian
>::do_define_standard_symbols(
2805 Symbol_table
* symtab
,
2810 // Define _GLOBAL_OFFSET_TABLE_ to ensure it isn't seen as
2811 // undefined when scanning relocs (and thus requires
2812 // non-relative dynamic relocs). The proper value will be
2814 Symbol
*gotsym
= symtab
->lookup("_GLOBAL_OFFSET_TABLE_", NULL
);
2815 if (gotsym
!= NULL
&& gotsym
->is_undefined())
2817 Target_powerpc
<size
, big_endian
>* target
=
2818 static_cast<Target_powerpc
<size
, big_endian
>*>(
2819 parameters
->sized_target
<size
, big_endian
>());
2820 Output_data_got_powerpc
<size
, big_endian
>* got
2821 = target
->got_section(symtab
, layout
, GOT_TYPE_SMALL
);
2822 symtab
->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL
,
2823 Symbol_table::PREDEFINED
,
2827 elfcpp::STV_HIDDEN
, 0,
2831 // Define _SDA_BASE_ at the start of the .sdata section + 32768.
2832 Symbol
*sdasym
= symtab
->lookup("_SDA_BASE_", NULL
);
2833 if (sdasym
!= NULL
&& sdasym
->is_undefined())
2835 Output_data_space
* sdata
= new Output_data_space(4, "** sdata");
2837 = layout
->add_output_section_data(".sdata", 0,
2839 | elfcpp::SHF_WRITE
,
2840 sdata
, ORDER_SMALL_DATA
, false);
2841 symtab
->define_in_output_data("_SDA_BASE_", NULL
,
2842 Symbol_table::PREDEFINED
,
2843 os
, 32768, 0, elfcpp::STT_OBJECT
,
2844 elfcpp::STB_LOCAL
, elfcpp::STV_HIDDEN
,
2850 // Define .TOC. as for 32-bit _GLOBAL_OFFSET_TABLE_
2851 Symbol
*gotsym
= symtab
->lookup(".TOC.", NULL
);
2852 if (gotsym
!= NULL
&& gotsym
->is_undefined())
2854 Target_powerpc
<size
, big_endian
>* target
=
2855 static_cast<Target_powerpc
<size
, big_endian
>*>(
2856 parameters
->sized_target
<size
, big_endian
>());
2857 Output_data_got_powerpc
<size
, big_endian
>* got
2858 = target
->got_section(symtab
, layout
, GOT_TYPE_SMALL
);
2859 symtab
->define_in_output_data(".TOC.", NULL
,
2860 Symbol_table::PREDEFINED
,
2864 elfcpp::STV_HIDDEN
, 0,
2869 this->tls_get_addr_
= symtab
->lookup("__tls_get_addr");
2870 if (parameters
->options().tls_get_addr_optimize()
2871 && this->tls_get_addr_
!= NULL
2872 && this->tls_get_addr_
->in_reg())
2873 this->tls_get_addr_opt_
= symtab
->lookup("__tls_get_addr_opt");
2874 if (this->tls_get_addr_opt_
!= NULL
)
2876 if (this->tls_get_addr_
->is_undefined()
2877 || this->tls_get_addr_
->is_from_dynobj())
2879 // Make it seem as if references to __tls_get_addr are
2880 // really to __tls_get_addr_opt, so the latter symbol is
2881 // made dynamic, not the former.
2882 this->tls_get_addr_
->clear_in_reg();
2883 this->tls_get_addr_opt_
->set_in_reg();
2885 // We have a non-dynamic definition for __tls_get_addr.
2886 // Make __tls_get_addr_opt the same, if it does not already have
2887 // a non-dynamic definition.
2888 else if (this->tls_get_addr_opt_
->is_undefined()
2889 || this->tls_get_addr_opt_
->is_from_dynobj())
2891 Sized_symbol
<size
>* from
2892 = static_cast<Sized_symbol
<size
>*>(this->tls_get_addr_
);
2893 Sized_symbol
<size
>* to
2894 = static_cast<Sized_symbol
<size
>*>(this->tls_get_addr_opt_
);
2895 symtab
->clone
<size
>(to
, from
);
2900 // Set up PowerPC target specific relobj.
2902 template<int size
, bool big_endian
>
2904 Target_powerpc
<size
, big_endian
>::do_make_elf_object(
2905 const std::string
& name
,
2906 Input_file
* input_file
,
2907 off_t offset
, const elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
2909 int et
= ehdr
.get_e_type();
2910 // ET_EXEC files are valid input for --just-symbols/-R,
2911 // and we treat them as relocatable objects.
2912 if (et
== elfcpp::ET_REL
2913 || (et
== elfcpp::ET_EXEC
&& input_file
->just_symbols()))
2915 Powerpc_relobj
<size
, big_endian
>* obj
=
2916 new Powerpc_relobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
);
2920 else if (et
== elfcpp::ET_DYN
)
2922 Powerpc_dynobj
<size
, big_endian
>* obj
=
2923 new Powerpc_dynobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
);
2929 gold_error(_("%s: unsupported ELF file type %d"), name
.c_str(), et
);
2934 template<int size
, bool big_endian
>
2935 class Output_data_got_powerpc
: public Output_data_got
<size
, big_endian
>
2938 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Valtype
;
2939 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true, size
, big_endian
> Rela_dyn
;
2941 Output_data_got_powerpc(Symbol_table
* symtab
, Layout
* layout
,
2943 : Output_data_got
<size
, big_endian
>(),
2944 symtab_(symtab
), layout_(layout
),
2945 header_ent_cnt_(size
== 32 ? 3 : 1),
2946 header_index_(size
== 32 ? 0x2000 : -1u)
2949 this->set_addralign(256);
2950 if (size
== 64 && (got_type
& GOT_TYPE_SMALL
))
2951 this->make_header();
2954 // Override all the Output_data_got methods we use so as to first call
2957 add_global(Symbol
* gsym
, unsigned int got_type
, uint64_t addend
)
2959 this->reserve_ent();
2960 return Output_data_got
<size
, big_endian
>::add_global(gsym
, got_type
,
2965 add_global_plt(Symbol
* gsym
, unsigned int got_type
, uint64_t addend
)
2967 this->reserve_ent();
2968 return Output_data_got
<size
, big_endian
>::add_global_plt(gsym
, got_type
,
2973 add_global_tls(Symbol
* gsym
, unsigned int got_type
, uint64_t addend
)
2974 { return this->add_global_plt(gsym
, got_type
, addend
); }
2977 add_global_with_rel(Symbol
* gsym
, unsigned int got_type
,
2978 Output_data_reloc_generic
* rel_dyn
,
2979 unsigned int r_type
, uint64_t addend
)
2981 this->reserve_ent();
2982 Output_data_got
<size
, big_endian
>::
2983 add_global_with_rel(gsym
, got_type
, rel_dyn
, r_type
, addend
);
2987 add_global_pair_with_rel(Symbol
* gsym
, unsigned int got_type
,
2988 Output_data_reloc_generic
* rel_dyn
,
2989 unsigned int r_type_1
, unsigned int r_type_2
,
2992 if (gsym
->has_got_offset(got_type
))
2995 this->reserve_ent(2);
2996 Output_data_got
<size
, big_endian
>::
2997 add_global_pair_with_rel(gsym
, got_type
, rel_dyn
, r_type_1
, r_type_2
,
3002 add_local(Relobj
* object
, unsigned int sym_index
, unsigned int got_type
,
3005 this->reserve_ent();
3006 return Output_data_got
<size
, big_endian
>::add_local(object
, sym_index
,
3011 add_local_plt(Relobj
* object
, unsigned int sym_index
,
3012 unsigned int got_type
, uint64_t addend
)
3014 this->reserve_ent();
3015 return Output_data_got
<size
, big_endian
>::add_local_plt(object
, sym_index
,
3020 add_local_tls(Relobj
* object
, unsigned int sym_index
,
3021 unsigned int got_type
, uint64_t addend
)
3022 { return this->add_local_plt(object
, sym_index
, got_type
, addend
); }
3025 add_local_tls_pair(Relobj
* object
, unsigned int sym_index
,
3026 unsigned int got_type
,
3027 Output_data_reloc_generic
* rel_dyn
,
3028 unsigned int r_type
, uint64_t addend
)
3030 if (object
->local_has_got_offset(sym_index
, got_type
, addend
))
3033 this->reserve_ent(2);
3034 Output_data_got
<size
, big_endian
>::
3035 add_local_tls_pair(object
, sym_index
, got_type
, rel_dyn
, r_type
, addend
);
3039 add_constant(Valtype constant
)
3041 this->reserve_ent();
3042 return Output_data_got
<size
, big_endian
>::add_constant(constant
);
3046 add_constant_pair(Valtype c1
, Valtype c2
)
3048 this->reserve_ent(2);
3049 return Output_data_got
<size
, big_endian
>::add_constant_pair(c1
, c2
);
3052 // Offset of _GLOBAL_OFFSET_TABLE_ and .TOC. in this section.
3057 return this->got_offset(this->header_index_
);
3058 else if (this->header_index_
!= -1u)
3059 return this->got_offset(this->header_index_
) + 0x8000;
3064 // Ensure our GOT has a header.
3066 set_final_data_size()
3068 if (size
== 32 && this->header_ent_cnt_
!= 0)
3069 this->make_header();
3070 Output_data_got
<size
, big_endian
>::set_final_data_size();
3073 // First word of GOT header needs some values that are not
3074 // handled by Output_data_got so poke them in here.
3075 // For 32-bit, address of .dynamic, for 64-bit, address of TOCbase.
3077 do_write(Output_file
* of
)
3079 if (this->header_index_
!= -1u)
3082 if (size
== 32 && this->layout_
->dynamic_data() != NULL
)
3083 val
= this->layout_
->dynamic_section()->address();
3085 val
= this->address() + this->g_o_t();
3086 this->replace_constant(this->header_index_
, val
);
3088 Output_data_got
<size
, big_endian
>::do_write(of
);
3093 reserve_ent(unsigned int cnt
= 1)
3095 if (size
!= 32 || this->header_ent_cnt_
== 0)
3097 if (this->num_entries() + cnt
> this->header_index_
)
3098 this->make_header();
3104 this->header_ent_cnt_
= 0;
3105 this->header_index_
= this->num_entries();
3108 Output_data_got
<size
, big_endian
>::add_constant(0);
3109 Output_data_got
<size
, big_endian
>::add_constant(0);
3110 Output_data_got
<size
, big_endian
>::add_constant(0);
3112 // Define _GLOBAL_OFFSET_TABLE_ at the header
3113 Symbol
*gotsym
= this->symtab_
->lookup("_GLOBAL_OFFSET_TABLE_", NULL
);
3116 Sized_symbol
<size
>* sym
= static_cast<Sized_symbol
<size
>*>(gotsym
);
3117 sym
->set_value(this->g_o_t());
3120 this->symtab_
->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL
,
3121 Symbol_table::PREDEFINED
,
3122 this, this->g_o_t(), 0,
3125 elfcpp::STV_HIDDEN
, 0,
3129 Output_data_got
<size
, big_endian
>::add_constant(0);
3132 // Stashed pointers.
3133 Symbol_table
* symtab_
;
3137 unsigned int header_ent_cnt_
;
3138 // GOT header index.
3139 unsigned int header_index_
;
3142 // Get the GOT section, creating it if necessary.
3144 template<int size
, bool big_endian
>
3145 Output_data_got_powerpc
<size
, big_endian
>*
3146 Target_powerpc
<size
, big_endian
>::got_section(Symbol_table
* symtab
,
3150 if (this->got_
== NULL
)
3152 gold_assert(symtab
!= NULL
&& layout
!= NULL
);
3155 = new Output_data_got_powerpc
<size
, big_endian
>(symtab
, layout
,
3158 layout
->add_output_section_data(".got", elfcpp::SHT_PROGBITS
,
3159 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
3160 this->got_
, ORDER_DATA
, false);
3163 if (size
== 32 || (got_type
& GOT_TYPE_SMALL
))
3166 if (this->biggot_
== NULL
)
3169 = new Output_data_got_powerpc
<size
, big_endian
>(symtab
, layout
,
3172 layout
->add_output_section_data(".got", elfcpp::SHT_PROGBITS
,
3173 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
3174 this->biggot_
, ORDER_DATA
, false);
3177 return this->biggot_
;
3180 // Get the dynamic reloc section, creating it if necessary.
3182 template<int size
, bool big_endian
>
3183 typename Target_powerpc
<size
, big_endian
>::Reloc_section
*
3184 Target_powerpc
<size
, big_endian
>::rela_dyn_section(Layout
* layout
)
3186 if (this->rela_dyn_
== NULL
)
3188 gold_assert(layout
!= NULL
);
3189 this->rela_dyn_
= new Reloc_section(parameters
->options().combreloc());
3190 layout
->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA
,
3191 elfcpp::SHF_ALLOC
, this->rela_dyn_
,
3192 ORDER_DYNAMIC_RELOCS
, false);
3194 return this->rela_dyn_
;
3197 // Similarly, but for ifunc symbols get the one for ifunc.
3199 template<int size
, bool big_endian
>
3200 typename Target_powerpc
<size
, big_endian
>::Reloc_section
*
3201 Target_powerpc
<size
, big_endian
>::rela_dyn_section(Symbol_table
* symtab
,
3206 return this->rela_dyn_section(layout
);
3208 if (this->iplt_
== NULL
)
3209 this->make_iplt_section(symtab
, layout
);
3210 return this->iplt_
->rel_plt();
3216 // Determine the stub group size. The group size is the absolute
3217 // value of the parameter --stub-group-size. If --stub-group-size
3218 // is passed a negative value, we restrict stubs to be always after
3219 // the stubbed branches.
3220 Stub_control(int32_t size
, bool no_size_errors
, bool multi_os
)
3221 : stub_group_size_(abs(size
)), stubs_always_after_branch_(size
< 0),
3222 suppress_size_errors_(no_size_errors
), multi_os_(multi_os
),
3223 state_(NO_GROUP
), group_size_(0), group_start_addr_(0),
3224 owner_(NULL
), output_section_(NULL
)
3228 // Return true iff input section can be handled by current stub
3231 can_add_to_stub_group(Output_section
* o
,
3232 const Output_section::Input_section
* i
,
3235 const Output_section::Input_section
*
3241 { return output_section_
; }
3244 set_output_and_owner(Output_section
* o
,
3245 const Output_section::Input_section
* i
)
3247 this->output_section_
= o
;
3256 // Adding group sections before the stubs.
3257 FINDING_STUB_SECTION
,
3258 // Adding group sections after the stubs.
3262 uint32_t stub_group_size_
;
3263 bool stubs_always_after_branch_
;
3264 bool suppress_size_errors_
;
3265 // True if a stub group can serve multiple output sections.
3268 // Current max size of group. Starts at stub_group_size_ but is
3269 // reduced to stub_group_size_/1024 on seeing a section with
3270 // external conditional branches.
3271 uint32_t group_size_
;
3272 uint64_t group_start_addr_
;
3273 // owner_ and output_section_ specify the section to which stubs are
3274 // attached. The stubs are placed at the end of this section.
3275 const Output_section::Input_section
* owner_
;
3276 Output_section
* output_section_
;
3279 // Return true iff input section can be handled by current stub
3280 // group. Sections are presented to this function in order,
3281 // so the first section is the head of the group.
3284 Stub_control::can_add_to_stub_group(Output_section
* o
,
3285 const Output_section::Input_section
* i
,
3288 bool whole_sec
= o
->order() == ORDER_INIT
|| o
->order() == ORDER_FINI
;
3290 uint64_t start_addr
= o
->address();
3293 // .init and .fini sections are pasted together to form a single
3294 // function. We can't be adding stubs in the middle of the function.
3295 this_size
= o
->data_size();
3298 start_addr
+= i
->relobj()->output_section_offset(i
->shndx());
3299 this_size
= i
->data_size();
3302 uint64_t end_addr
= start_addr
+ this_size
;
3303 uint32_t group_size
= this->stub_group_size_
;
3305 this->group_size_
= group_size
= group_size
>> 10;
3307 if (this_size
> group_size
&& !this->suppress_size_errors_
)
3308 gold_warning(_("%s:%s exceeds group size"),
3309 i
->relobj()->name().c_str(),
3310 i
->relobj()->section_name(i
->shndx()).c_str());
3312 gold_debug(DEBUG_TARGET
, "maybe add%s %s:%s size=%#llx total=%#llx",
3313 has14
? " 14bit" : "",
3314 i
->relobj()->name().c_str(),
3315 i
->relobj()->section_name(i
->shndx()).c_str(),
3316 (long long) this_size
,
3317 (this->state_
== NO_GROUP
3319 : (long long) end_addr
- this->group_start_addr_
));
3321 if (this->state_
== NO_GROUP
)
3323 // Only here on very first use of Stub_control
3325 this->output_section_
= o
;
3326 this->state_
= FINDING_STUB_SECTION
;
3327 this->group_size_
= group_size
;
3328 this->group_start_addr_
= start_addr
;
3331 else if (!this->multi_os_
&& this->output_section_
!= o
)
3333 else if (this->state_
== HAS_STUB_SECTION
)
3335 // Can we add this section, which is after the stubs, to the
3337 if (end_addr
- this->group_start_addr_
<= this->group_size_
)
3340 else if (this->state_
== FINDING_STUB_SECTION
)
3342 if ((whole_sec
&& this->output_section_
== o
)
3343 || end_addr
- this->group_start_addr_
<= this->group_size_
)
3345 // Stubs are added at the end of "owner_".
3347 this->output_section_
= o
;
3350 // The group before the stubs has reached maximum size.
3351 // Now see about adding sections after the stubs to the
3352 // group. If the current section has a 14-bit branch and
3353 // the group before the stubs exceeds group_size_ (because
3354 // they didn't have 14-bit branches), don't add sections
3355 // after the stubs: The size of stubs for such a large
3356 // group may exceed the reach of a 14-bit branch.
3357 if (!this->stubs_always_after_branch_
3358 && this_size
<= this->group_size_
3359 && start_addr
- this->group_start_addr_
<= this->group_size_
)
3361 gold_debug(DEBUG_TARGET
, "adding after stubs");
3362 this->state_
= HAS_STUB_SECTION
;
3363 this->group_start_addr_
= start_addr
;
3370 gold_debug(DEBUG_TARGET
,
3371 !this->multi_os_
&& this->output_section_
!= o
3372 ? "nope, new output section\n"
3373 : "nope, didn't fit\n");
3375 // The section fails to fit in the current group. Set up a few
3376 // things for the next group. owner_ and output_section_ will be
3377 // set later after we've retrieved those values for the current
3379 this->state_
= FINDING_STUB_SECTION
;
3380 this->group_size_
= group_size
;
3381 this->group_start_addr_
= start_addr
;
3385 // Look over all the input sections, deciding where to place stubs.
3387 template<int size
, bool big_endian
>
3389 Target_powerpc
<size
, big_endian
>::group_sections(Layout
* layout
,
3391 bool no_size_errors
)
3393 Stub_control
stub_control(this->stub_group_size_
, no_size_errors
,
3394 parameters
->options().stub_group_multi());
3396 // Group input sections and insert stub table
3397 Stub_table_owner
* table_owner
= NULL
;
3398 std::vector
<Stub_table_owner
*> tables
;
3399 Layout::Section_list section_list
;
3400 layout
->get_executable_sections(§ion_list
);
3401 std::stable_sort(section_list
.begin(), section_list
.end(), Sort_sections());
3402 for (Layout::Section_list::iterator o
= section_list
.begin();
3403 o
!= section_list
.end();
3406 typedef Output_section::Input_section_list Input_section_list
;
3407 for (Input_section_list::const_iterator i
3408 = (*o
)->input_sections().begin();
3409 i
!= (*o
)->input_sections().end();
3412 if (i
->is_input_section()
3413 || i
->is_relaxed_input_section())
3415 Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
3416 <Powerpc_relobj
<size
, big_endian
>*>(i
->relobj());
3417 bool has14
= ppcobj
->has_14bit_branch(i
->shndx());
3418 if (!stub_control
.can_add_to_stub_group(*o
, &*i
, has14
))
3420 table_owner
->output_section
= stub_control
.output_section();
3421 table_owner
->owner
= stub_control
.owner();
3422 stub_control
.set_output_and_owner(*o
, &*i
);
3425 if (table_owner
== NULL
)
3427 table_owner
= new Stub_table_owner
;
3428 tables
.push_back(table_owner
);
3430 ppcobj
->set_stub_table(i
->shndx(), tables
.size() - 1);
3434 if (table_owner
!= NULL
)
3436 table_owner
->output_section
= stub_control
.output_section();
3437 table_owner
->owner
= stub_control
.owner();;
3439 for (typename
std::vector
<Stub_table_owner
*>::iterator t
= tables
.begin();
3443 Stub_table
<size
, big_endian
>* stub_table
;
3445 if ((*t
)->owner
->is_input_section())
3446 stub_table
= new Stub_table
<size
, big_endian
>(this,
3447 (*t
)->output_section
,
3449 this->stub_tables_
.size());
3450 else if ((*t
)->owner
->is_relaxed_input_section())
3451 stub_table
= static_cast<Stub_table
<size
, big_endian
>*>(
3452 (*t
)->owner
->relaxed_input_section());
3455 this->stub_tables_
.push_back(stub_table
);
3461 static unsigned long
3462 max_branch_delta (unsigned int r_type
)
3464 if (r_type
== elfcpp::R_POWERPC_REL14
3465 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
3466 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
)
3468 if (r_type
== elfcpp::R_POWERPC_REL24
3469 || (size
== 64 && r_type
== elfcpp::R_PPC64_REL24_NOTOC
)
3470 || r_type
== elfcpp::R_PPC64_REL24_P9NOTOC
3471 || r_type
== elfcpp::R_PPC_PLTREL24
3472 || r_type
== elfcpp::R_PPC_LOCAL24PC
)
3477 // Return whether this branch is going via a plt call stub.
3479 template<int size
, bool big_endian
>
3481 Target_powerpc
<size
, big_endian
>::Branch_info::mark_pltcall(
3482 Powerpc_relobj
<size
, big_endian
>* ppc_object
,
3485 Target_powerpc
* target
,
3486 Symbol_table
* symtab
)
3488 if (this->object_
!= ppc_object
3489 || this->shndx_
!= shndx
3490 || this->offset_
!= offset
)
3493 Symbol
* sym
= this->object_
->global_symbol(this->r_sym_
);
3494 if (sym
!= NULL
&& sym
->is_forwarder())
3495 sym
= symtab
->resolve_forwards(sym
);
3496 if (target
->replace_tls_get_addr(sym
))
3497 sym
= target
->tls_get_addr_opt();
3498 const Sized_symbol
<size
>* gsym
= static_cast<const Sized_symbol
<size
>*>(sym
);
3500 ? (gsym
->use_plt_offset(Scan::get_reference_flags(this->r_type_
, target
))
3501 && !target
->is_elfv2_localentry0(gsym
))
3502 : (this->object_
->local_has_plt_offset(this->r_sym_
)
3503 && !target
->is_elfv2_localentry0(this->object_
, this->r_sym_
)))
3511 // If this branch needs a plt call stub, or a long branch stub, make one.
3513 template<int size
, bool big_endian
>
3515 Target_powerpc
<size
, big_endian
>::Branch_info::make_stub(
3516 Stub_table
<size
, big_endian
>* stub_table
,
3517 Stub_table
<size
, big_endian
>* ifunc_stub_table
,
3518 Symbol_table
* symtab
) const
3520 Symbol
* sym
= this->object_
->global_symbol(this->r_sym_
);
3521 Target_powerpc
<size
, big_endian
>* target
=
3522 static_cast<Target_powerpc
<size
, big_endian
>*>(
3523 parameters
->sized_target
<size
, big_endian
>());
3524 if (sym
!= NULL
&& sym
->is_forwarder())
3525 sym
= symtab
->resolve_forwards(sym
);
3526 if (target
->replace_tls_get_addr(sym
))
3527 sym
= target
->tls_get_addr_opt();
3528 const Sized_symbol
<size
>* gsym
= static_cast<const Sized_symbol
<size
>*>(sym
);
3532 ? gsym
->use_plt_offset(Scan::get_reference_flags(this->r_type_
, target
))
3533 : this->object_
->local_has_plt_offset(this->r_sym_
))
3537 && target
->abiversion() >= 2
3538 && !parameters
->options().output_is_position_independent()
3539 && !is_branch_reloc
<size
>(this->r_type_
))
3540 target
->glink_section()->add_global_entry(gsym
);
3543 if (stub_table
== NULL
3546 && !parameters
->options().output_is_position_independent()
3547 && !is_branch_reloc
<size
>(this->r_type_
)))
3548 stub_table
= this->object_
->stub_table(this->shndx_
);
3549 if (stub_table
== NULL
)
3551 // This is a ref from a data section to an ifunc symbol,
3552 // or a non-branch reloc for which we always want to use
3553 // one set of stubs for resolving function addresses.
3554 stub_table
= ifunc_stub_table
;
3556 gold_assert(stub_table
!= NULL
);
3557 Address from
= this->object_
->get_output_section_offset(this->shndx_
);
3558 if (from
!= invalid_address
)
3559 from
+= (this->object_
->output_section(this->shndx_
)->address()
3562 ok
= stub_table
->add_plt_call_entry(from
,
3563 this->object_
, gsym
,
3564 this->r_type_
, this->addend_
,
3567 ok
= stub_table
->add_plt_call_entry(from
,
3568 this->object_
, this->r_sym_
,
3569 this->r_type_
, this->addend_
,
3575 Address max_branch_offset
= max_branch_delta
<size
>(this->r_type_
);
3576 if (max_branch_offset
== 0)
3578 Address from
= this->object_
->get_output_section_offset(this->shndx_
);
3579 gold_assert(from
!= invalid_address
);
3580 from
+= (this->object_
->output_section(this->shndx_
)->address()
3583 unsigned int other
= 0;
3586 switch (gsym
->source())
3588 case Symbol::FROM_OBJECT
:
3590 Object
* symobj
= gsym
->object();
3591 if (symobj
->is_dynamic()
3592 || symobj
->pluginobj() != NULL
)
3595 unsigned int shndx
= gsym
->shndx(&is_ordinary
);
3596 if (shndx
== elfcpp::SHN_UNDEF
)
3601 case Symbol::IS_UNDEFINED
:
3607 Symbol_table::Compute_final_value_status status
;
3608 to
= symtab
->compute_final_value
<size
>(gsym
, &status
);
3609 if (status
!= Symbol_table::CFVS_OK
)
3612 other
= gsym
->nonvis() >> 3;
3616 const Symbol_value
<size
>* psymval
3617 = this->object_
->local_symbol(this->r_sym_
);
3618 Symbol_value
<size
> symval
;
3619 if (psymval
->is_section_symbol())
3620 symval
.set_is_section_symbol();
3621 typedef Sized_relobj_file
<size
, big_endian
> ObjType
;
3622 typename
ObjType::Compute_final_local_value_status status
3623 = this->object_
->compute_final_local_value(this->r_sym_
, psymval
,
3625 if (status
!= ObjType::CFLV_OK
3626 || !symval
.has_output_value())
3628 to
= symval
.value(this->object_
, 0);
3630 other
= this->object_
->st_other(this->r_sym_
) >> 5;
3632 if (!(size
== 32 && this->r_type_
== elfcpp::R_PPC_PLTREL24
))
3633 to
+= this->addend_
;
3634 if (stub_table
== NULL
)
3635 stub_table
= this->object_
->stub_table(this->shndx_
);
3636 if (size
== 64 && target
->abiversion() < 2)
3638 unsigned int dest_shndx
;
3639 if (!target
->symval_for_branch(symtab
, gsym
, this->object_
,
3643 unsigned int local_ent
= 0;
3645 && this->r_type_
!= elfcpp::R_PPC64_REL24_NOTOC
3646 && this->r_type_
!= elfcpp::R_PPC64_REL24_P9NOTOC
)
3647 local_ent
= elfcpp::ppc64_decode_local_entry(other
);
3648 Address delta
= to
+ local_ent
- from
;
3649 if (delta
+ max_branch_offset
>= 2 * max_branch_offset
3651 && (this->r_type_
== elfcpp::R_PPC64_REL24_NOTOC
3652 || this->r_type_
== elfcpp::R_PPC64_REL24_P9NOTOC
)
3654 ? this->object_
->ppc64_needs_toc(gsym
)
3655 : this->object_
->ppc64_needs_toc(this->r_sym_
))))
3657 if (stub_table
== NULL
)
3659 gold_warning(_("%s:%s: branch in non-executable section,"
3660 " no long branch stub for you"),
3661 this->object_
->name().c_str(),
3662 this->object_
->section_name(this->shndx_
).c_str());
3665 bool save_res
= (size
== 64
3667 && gsym
->source() == Symbol::IN_OUTPUT_DATA
3668 && gsym
->output_data() == target
->savres_section());
3669 ok
= stub_table
->add_long_branch_entry(this->r_type_
,
3670 from
, to
, other
, save_res
);
3674 gold_debug(DEBUG_TARGET
,
3675 "branch at %s:%s+%#lx\n"
3676 "can't reach stub attached to %s:%s",
3677 this->object_
->name().c_str(),
3678 this->object_
->section_name(this->shndx_
).c_str(),
3679 (unsigned long) this->offset_
,
3680 stub_table
->relobj()->name().c_str(),
3681 stub_table
->relobj()->section_name(stub_table
->shndx()).c_str());
3686 // Relaxation hook. This is where we do stub generation.
3688 template<int size
, bool big_endian
>
3690 Target_powerpc
<size
, big_endian
>::do_relax(int pass
,
3691 const Input_objects
*,
3692 Symbol_table
* symtab
,
3696 unsigned int prev_brlt_size
= 0;
3700 = this->abiversion() < 2 && parameters
->options().plt_thread_safe();
3702 && this->abiversion() < 2
3704 && !parameters
->options().user_set_plt_thread_safe())
3706 static const char* const thread_starter
[] =
3710 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
3712 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
3713 "mq_notify", "create_timer",
3718 "GOMP_parallel_start",
3719 "GOMP_parallel_loop_static",
3720 "GOMP_parallel_loop_static_start",
3721 "GOMP_parallel_loop_dynamic",
3722 "GOMP_parallel_loop_dynamic_start",
3723 "GOMP_parallel_loop_guided",
3724 "GOMP_parallel_loop_guided_start",
3725 "GOMP_parallel_loop_runtime",
3726 "GOMP_parallel_loop_runtime_start",
3727 "GOMP_parallel_sections",
3728 "GOMP_parallel_sections_start",
3733 if (parameters
->options().shared())
3737 for (unsigned int i
= 0;
3738 i
< sizeof(thread_starter
) / sizeof(thread_starter
[0]);
3741 Symbol
* sym
= symtab
->lookup(thread_starter
[i
], NULL
);
3742 thread_safe
= (sym
!= NULL
3744 && sym
->in_real_elf());
3750 this->plt_thread_safe_
= thread_safe
;
3755 this->stub_group_size_
= parameters
->options().stub_group_size();
3756 bool no_size_errors
= true;
3757 if (this->stub_group_size_
== 1)
3758 this->stub_group_size_
= 0x1c00000;
3759 else if (this->stub_group_size_
== -1)
3760 this->stub_group_size_
= -0x1e00000;
3762 no_size_errors
= false;
3763 this->group_sections(layout
, task
, no_size_errors
);
3765 else if (this->relax_failed_
&& this->relax_fail_count_
< 3)
3767 this->branch_lookup_table_
.clear();
3768 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
3769 p
!= this->stub_tables_
.end();
3772 (*p
)->clear_stubs(true);
3774 this->stub_tables_
.clear();
3775 this->stub_group_size_
= this->stub_group_size_
/ 4 * 3;
3776 gold_info(_("%s: stub group size is too large; retrying with %#x"),
3777 program_name
, this->stub_group_size_
);
3778 this->group_sections(layout
, task
, true);
3781 // We need address of stub tables valid for make_stub.
3782 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
3783 p
!= this->stub_tables_
.end();
3786 const Powerpc_relobj
<size
, big_endian
>* object
3787 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>((*p
)->relobj());
3788 Address off
= object
->get_output_section_offset((*p
)->shndx());
3789 gold_assert(off
!= invalid_address
);
3790 Output_section
* os
= (*p
)->output_section();
3791 (*p
)->set_address_and_size(os
, off
);
3796 // Clear plt call stubs, long branch stubs and branch lookup table.
3797 prev_brlt_size
= this->branch_lookup_table_
.size();
3798 this->branch_lookup_table_
.clear();
3799 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
3800 p
!= this->stub_tables_
.end();
3803 (*p
)->clear_stubs(false);
3807 // Build all the stubs.
3808 this->relax_failed_
= false;
3809 Stub_table
<size
, big_endian
>* ifunc_stub_table
3810 = this->stub_tables_
.size() == 0 ? NULL
: this->stub_tables_
[0];
3811 Stub_table
<size
, big_endian
>* one_stub_table
3812 = this->stub_tables_
.size() != 1 ? NULL
: ifunc_stub_table
;
3813 for (typename
Branches::const_iterator b
= this->branch_info_
.begin();
3814 b
!= this->branch_info_
.end();
3817 if (!b
->make_stub(one_stub_table
, ifunc_stub_table
, symtab
)
3818 && !this->relax_failed_
)
3820 this->relax_failed_
= true;
3821 this->relax_fail_count_
++;
3822 if (this->relax_fail_count_
< 3)
3826 bool do_resize
= false;
3827 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
3828 p
!= this->stub_tables_
.end();
3830 if ((*p
)->need_resize())
3837 this->branch_lookup_table_
.clear();
3838 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
3839 p
!= this->stub_tables_
.end();
3841 (*p
)->set_resizing(true);
3842 for (typename
Branches::const_iterator b
= this->branch_info_
.begin();
3843 b
!= this->branch_info_
.end();
3846 if (!b
->make_stub(one_stub_table
, ifunc_stub_table
, symtab
)
3847 && !this->relax_failed_
)
3849 this->relax_failed_
= true;
3850 this->relax_fail_count_
++;
3851 if (this->relax_fail_count_
< 3)
3855 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
3856 p
!= this->stub_tables_
.end();
3858 (*p
)->set_resizing(false);
3861 // Did anything change size?
3862 unsigned int num_huge_branches
= this->branch_lookup_table_
.size();
3863 bool again
= num_huge_branches
!= prev_brlt_size
;
3864 if (size
== 64 && num_huge_branches
!= 0)
3865 this->make_brlt_section(layout
);
3866 if (size
== 64 && again
)
3867 this->brlt_section_
->set_current_size(num_huge_branches
);
3869 for (typename
Stub_tables::reverse_iterator p
= this->stub_tables_
.rbegin();
3870 p
!= this->stub_tables_
.rend();
3872 (*p
)->remove_eh_frame(layout
);
3874 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
3875 p
!= this->stub_tables_
.end();
3877 (*p
)->add_eh_frame(layout
);
3879 typedef Unordered_set
<Output_section
*> Output_sections
;
3880 Output_sections os_need_update
;
3881 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
3882 p
!= this->stub_tables_
.end();
3885 if ((*p
)->size_update())
3888 os_need_update
.insert((*p
)->output_section());
3892 // Set output section offsets for all input sections in an output
3893 // section that just changed size. Anything past the stubs will
3895 for (typename
Output_sections::iterator p
= os_need_update
.begin();
3896 p
!= os_need_update
.end();
3899 Output_section
* os
= *p
;
3901 typedef Output_section::Input_section_list Input_section_list
;
3902 for (Input_section_list::const_iterator i
= os
->input_sections().begin();
3903 i
!= os
->input_sections().end();
3906 off
= align_address(off
, i
->addralign());
3907 if (i
->is_input_section() || i
->is_relaxed_input_section())
3908 i
->relobj()->set_section_offset(i
->shndx(), off
);
3909 if (i
->is_relaxed_input_section())
3911 Stub_table
<size
, big_endian
>* stub_table
3912 = static_cast<Stub_table
<size
, big_endian
>*>(
3913 i
->relaxed_input_section());
3914 Address stub_table_size
= stub_table
->set_address_and_size(os
, off
);
3915 off
+= stub_table_size
;
3916 // After a few iterations, set current stub table size
3917 // as min size threshold, so later stub tables can only
3920 stub_table
->set_min_size_threshold(stub_table_size
);
3923 off
+= i
->data_size();
3925 // If .branch_lt is part of this output section, then we have
3926 // just done the offset adjustment.
3927 os
->clear_section_offsets_need_adjustment();
3932 && num_huge_branches
!= 0
3933 && parameters
->options().output_is_position_independent())
3935 // Fill in the BRLT relocs.
3936 this->brlt_section_
->reset_brlt_sizes();
3937 for (typename
Branch_lookup_table::const_iterator p
3938 = this->branch_lookup_table_
.begin();
3939 p
!= this->branch_lookup_table_
.end();
3942 this->brlt_section_
->add_reloc(p
->first
, p
->second
);
3944 this->brlt_section_
->finalize_brlt_sizes();
3948 && (parameters
->options().user_set_emit_stub_syms()
3949 ? parameters
->options().emit_stub_syms()
3951 || parameters
->options().output_is_position_independent()
3952 || parameters
->options().emit_relocs())))
3954 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
3955 p
!= this->stub_tables_
.end();
3957 (*p
)->define_stub_syms(symtab
);
3959 if (this->glink_
!= NULL
)
3961 int stub_size
= this->glink_
->pltresolve_size();
3962 Address value
= -stub_size
;
3968 this->define_local(symtab
, "__glink_PLTresolve",
3969 this->glink_
, value
, stub_size
);
3972 this->define_local(symtab
, "__glink", this->glink_
, 0, 0);
3979 template<int size
, bool big_endian
>
3981 Target_powerpc
<size
, big_endian
>::do_plt_fde_location(const Output_data
* plt
,
3982 unsigned char* oview
,
3986 uint64_t address
= plt
->address();
3987 off_t len
= plt
->data_size();
3989 if (plt
== this->glink_
)
3991 // See Output_data_glink::do_write() for glink contents.
3994 // Static linking may need stubs, to support ifunc and long
3995 // branches. We need to create an output section for
3996 // .eh_frame early in the link process, to have a place to
3997 // attach stub .eh_frame info. We also need to have
3998 // registered a CIE that matches the stub CIE. Both of
3999 // these requirements are satisfied by creating an FDE and
4000 // CIE for .glink, even though static linking will leave
4001 // .glink zero length.
4002 // ??? Hopefully generating an FDE with a zero address range
4003 // won't confuse anything that consumes .eh_frame info.
4005 else if (size
== 64)
4007 // There is one word before __glink_PLTresolve
4011 else if (parameters
->options().output_is_position_independent())
4013 // There are two FDEs for a position independent glink.
4014 // The first covers the branch table, the second
4015 // __glink_PLTresolve at the end of glink.
4016 off_t resolve_size
= this->glink_
->pltresolve_size();
4017 if (oview
[9] == elfcpp::DW_CFA_nop
)
4018 len
-= resolve_size
;
4021 address
+= len
- resolve_size
;
4028 // Must be a stub table.
4029 const Stub_table
<size
, big_endian
>* stub_table
4030 = static_cast<const Stub_table
<size
, big_endian
>*>(plt
);
4031 uint64_t stub_address
= stub_table
->stub_address();
4032 len
-= stub_address
- address
;
4033 address
= stub_address
;
4036 *paddress
= address
;
4040 // A class to handle the PLT data.
4042 template<int size
, bool big_endian
>
4043 class Output_data_plt_powerpc
: public Output_section_data_build
4046 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true,
4047 size
, big_endian
> Reloc_section
;
4049 Output_data_plt_powerpc(Target_powerpc
<size
, big_endian
>* targ
,
4050 Symbol_table
* symtab
,
4051 Reloc_section
* plt_rel
,
4053 : Output_section_data_build(size
== 32 ? 4 : 8),
4054 rel_(plt_rel
), targ_(targ
), symtab_(symtab
), name_(name
), sym_ents_()
4057 // Add an entry to the PLT.
4059 add_entry(Symbol
*, bool = false);
4062 add_ifunc_entry(Symbol
*);
4065 add_local_entry(Sized_relobj_file
<size
, big_endian
>*, unsigned int);
4068 add_local_ifunc_entry(Sized_relobj_file
<size
, big_endian
>*, unsigned int);
4070 // Return the .rela.plt section data.
4077 // Return the number of PLT entries.
4081 if (this->current_data_size() == 0)
4083 return ((this->current_data_size() - this->first_plt_entry_offset())
4084 / this->plt_entry_size());
4089 do_adjust_output_section(Output_section
* os
)
4094 // Write to a map file.
4096 do_print_to_mapfile(Mapfile
* mapfile
) const
4097 { mapfile
->print_output_data(this, this->name_
); }
4100 struct Local_plt_ent
4102 Local_plt_ent(Sized_relobj_file
<size
, big_endian
>* obj
, unsigned int rsym
)
4103 { rsym_
= rsym
; u
.obj_
= obj
; }
4104 Local_plt_ent(Symbol
* sym
)
4105 { rsym_
= -1u; u
.gsym_
= sym
; }
4112 Sized_relobj_file
<size
, big_endian
>* obj_
;
4117 // Return the offset of the first non-reserved PLT entry.
4119 first_plt_entry_offset() const
4121 // IPLT and LPLT have no reserved entry.
4122 if (this->name_
[3] == 'I' || this->name_
[3] == 'L')
4124 return this->targ_
->first_plt_entry_offset();
4127 // Return the size of each PLT entry.
4129 plt_entry_size() const
4131 return this->targ_
->plt_entry_size();
4134 // Write out the PLT data.
4136 do_write(Output_file
*);
4138 // The reloc section.
4139 Reloc_section
* rel_
;
4140 // Allows access to .glink for do_write.
4141 Target_powerpc
<size
, big_endian
>* targ_
;
4142 Symbol_table
* symtab_
;
4143 // What to report in map file.
4146 std::vector
<Local_plt_ent
> sym_ents_
;
4149 // Add an entry to the PLT.
4151 template<int size
, bool big_endian
>
4153 Output_data_plt_powerpc
<size
, big_endian
>::add_entry(Symbol
* gsym
,
4156 if (!gsym
->has_plt_offset())
4158 section_size_type off
= this->current_data_size();
4160 off
+= this->first_plt_entry_offset();
4161 gsym
->set_plt_offset(off
);
4166 unsigned int dynrel
= elfcpp::R_POWERPC_RELATIVE
;
4167 if (size
== 64 && this->targ_
->abiversion() < 2)
4168 dynrel
= elfcpp::R_POWERPC_JMP_SLOT
;
4169 this->rel_
->add_symbolless_global_addend(gsym
, dynrel
,
4174 gsym
->set_needs_dynsym_entry();
4175 unsigned int dynrel
= elfcpp::R_POWERPC_JMP_SLOT
;
4176 this->rel_
->add_global(gsym
, dynrel
, this, off
, 0);
4179 off
+= this->plt_entry_size();
4180 this->set_current_data_size(off
);
4183 Local_plt_ent
sym(gsym
);
4184 this->sym_ents_
.push_back(sym
);
4189 // Add an entry for a global ifunc symbol that resolves locally, to the IPLT.
4191 template<int size
, bool big_endian
>
4193 Output_data_plt_powerpc
<size
, big_endian
>::add_ifunc_entry(Symbol
* gsym
)
4195 if (!gsym
->has_plt_offset())
4197 section_size_type off
= this->current_data_size();
4198 gsym
->set_plt_offset(off
);
4199 unsigned int dynrel
= elfcpp::R_POWERPC_IRELATIVE
;
4200 if (size
== 64 && this->targ_
->abiversion() < 2)
4201 dynrel
= elfcpp::R_PPC64_JMP_IREL
;
4202 this->rel_
->add_symbolless_global_addend(gsym
, dynrel
, this, off
, 0);
4203 off
+= this->plt_entry_size();
4204 this->set_current_data_size(off
);
4208 // Add an entry for a local symbol to the PLT.
4210 template<int size
, bool big_endian
>
4212 Output_data_plt_powerpc
<size
, big_endian
>::add_local_entry(
4213 Sized_relobj_file
<size
, big_endian
>* relobj
,
4214 unsigned int local_sym_index
)
4216 if (!relobj
->local_has_plt_offset(local_sym_index
))
4218 section_size_type off
= this->current_data_size();
4219 relobj
->set_local_plt_offset(local_sym_index
, off
);
4222 unsigned int dynrel
= elfcpp::R_POWERPC_RELATIVE
;
4223 if (size
== 64 && this->targ_
->abiversion() < 2)
4224 dynrel
= elfcpp::R_POWERPC_JMP_SLOT
;
4225 this->rel_
->add_symbolless_local_addend(relobj
, local_sym_index
,
4226 dynrel
, this, off
, 0);
4228 off
+= this->plt_entry_size();
4229 this->set_current_data_size(off
);
4230 Local_plt_ent
sym(relobj
, local_sym_index
);
4231 this->sym_ents_
.push_back(sym
);
4235 // Add an entry for a local ifunc symbol to the IPLT.
4237 template<int size
, bool big_endian
>
4239 Output_data_plt_powerpc
<size
, big_endian
>::add_local_ifunc_entry(
4240 Sized_relobj_file
<size
, big_endian
>* relobj
,
4241 unsigned int local_sym_index
)
4243 if (!relobj
->local_has_plt_offset(local_sym_index
))
4245 section_size_type off
= this->current_data_size();
4246 relobj
->set_local_plt_offset(local_sym_index
, off
);
4247 unsigned int dynrel
= elfcpp::R_POWERPC_IRELATIVE
;
4248 if (size
== 64 && this->targ_
->abiversion() < 2)
4249 dynrel
= elfcpp::R_PPC64_JMP_IREL
;
4250 this->rel_
->add_symbolless_local_addend(relobj
, local_sym_index
, dynrel
,
4252 off
+= this->plt_entry_size();
4253 this->set_current_data_size(off
);
4257 static const uint32_t add_0_11_11
= 0x7c0b5a14;
4258 static const uint32_t add_2_2_11
= 0x7c425a14;
4259 static const uint32_t add_2_2_12
= 0x7c426214;
4260 static const uint32_t add_3_3_2
= 0x7c631214;
4261 static const uint32_t add_3_3_13
= 0x7c636a14;
4262 static const uint32_t add_3_12_2
= 0x7c6c1214;
4263 static const uint32_t add_3_12_13
= 0x7c6c6a14;
4264 static const uint32_t add_11_0_11
= 0x7d605a14;
4265 static const uint32_t add_11_2_11
= 0x7d625a14;
4266 static const uint32_t add_11_11_2
= 0x7d6b1214;
4267 static const uint32_t add_12_11_12
= 0x7d8b6214;
4268 static const uint32_t addi_0_12
= 0x380c0000;
4269 static const uint32_t addi_2_2
= 0x38420000;
4270 static const uint32_t addi_3_3
= 0x38630000;
4271 static const uint32_t addi_11_11
= 0x396b0000;
4272 static const uint32_t addi_12_1
= 0x39810000;
4273 static const uint32_t addi_12_11
= 0x398b0000;
4274 static const uint32_t addi_12_12
= 0x398c0000;
4275 static const uint32_t addis_0_2
= 0x3c020000;
4276 static const uint32_t addis_0_13
= 0x3c0d0000;
4277 static const uint32_t addis_2_12
= 0x3c4c0000;
4278 static const uint32_t addis_11_2
= 0x3d620000;
4279 static const uint32_t addis_11_11
= 0x3d6b0000;
4280 static const uint32_t addis_11_30
= 0x3d7e0000;
4281 static const uint32_t addis_12_1
= 0x3d810000;
4282 static const uint32_t addis_12_2
= 0x3d820000;
4283 static const uint32_t addis_12_11
= 0x3d8b0000;
4284 static const uint32_t addis_12_12
= 0x3d8c0000;
4285 static const uint32_t b
= 0x48000000;
4286 static const uint32_t bcl_20_31
= 0x429f0005;
4287 static const uint32_t bctr
= 0x4e800420;
4288 static const uint32_t bctrl
= 0x4e800421;
4289 static const uint32_t beqlr
= 0x4d820020;
4290 static const uint32_t blr
= 0x4e800020;
4291 static const uint32_t bnectr_p4
= 0x4ce20420;
4292 static const uint32_t cmpld_7_12_0
= 0x7fac0040;
4293 static const uint32_t cmpldi_2_0
= 0x28220000;
4294 static const uint32_t cmpdi_11_0
= 0x2c2b0000;
4295 static const uint32_t cmpwi_11_0
= 0x2c0b0000;
4296 static const uint32_t cror_15_15_15
= 0x4def7b82;
4297 static const uint32_t cror_31_31_31
= 0x4ffffb82;
4298 static const uint32_t ld_0_1
= 0xe8010000;
4299 static const uint32_t ld_0_11
= 0xe80b0000;
4300 static const uint32_t ld_0_12
= 0xe80c0000;
4301 static const uint32_t ld_2_1
= 0xe8410000;
4302 static const uint32_t ld_2_2
= 0xe8420000;
4303 static const uint32_t ld_2_11
= 0xe84b0000;
4304 static const uint32_t ld_2_12
= 0xe84c0000;
4305 static const uint32_t ld_11_1
= 0xe9610000;
4306 static const uint32_t ld_11_2
= 0xe9620000;
4307 static const uint32_t ld_11_3
= 0xe9630000;
4308 static const uint32_t ld_11_11
= 0xe96b0000;
4309 static const uint32_t ld_12_2
= 0xe9820000;
4310 static const uint32_t ld_12_3
= 0xe9830000;
4311 static const uint32_t ld_12_11
= 0xe98b0000;
4312 static const uint32_t ld_12_12
= 0xe98c0000;
4313 static const uint32_t ldx_12_11_12
= 0x7d8b602a;
4314 static const uint32_t lfd_0_1
= 0xc8010000;
4315 static const uint32_t li_0_0
= 0x38000000;
4316 static const uint32_t li_11_0
= 0x39600000;
4317 static const uint32_t li_12_0
= 0x39800000;
4318 static const uint32_t lis_0
= 0x3c000000;
4319 static const uint32_t lis_2
= 0x3c400000;
4320 static const uint32_t lis_11
= 0x3d600000;
4321 static const uint32_t lis_12
= 0x3d800000;
4322 static const uint32_t lvx_0_12_0
= 0x7c0c00ce;
4323 static const uint32_t lwz_0_12
= 0x800c0000;
4324 static const uint32_t lwz_11_3
= 0x81630000;
4325 static const uint32_t lwz_11_11
= 0x816b0000;
4326 static const uint32_t lwz_11_30
= 0x817e0000;
4327 static const uint32_t lwz_12_3
= 0x81830000;
4328 static const uint32_t lwz_12_12
= 0x818c0000;
4329 static const uint32_t lwzu_0_12
= 0x840c0000;
4330 static const uint32_t mflr_0
= 0x7c0802a6;
4331 static const uint32_t mflr_11
= 0x7d6802a6;
4332 static const uint32_t mflr_12
= 0x7d8802a6;
4333 static const uint32_t mr_0_3
= 0x7c601b78;
4334 static const uint32_t mr_3_0
= 0x7c030378;
4335 static const uint32_t mtctr_0
= 0x7c0903a6;
4336 static const uint32_t mtctr_11
= 0x7d6903a6;
4337 static const uint32_t mtctr_12
= 0x7d8903a6;
4338 static const uint32_t mtlr_0
= 0x7c0803a6;
4339 static const uint32_t mtlr_11
= 0x7d6803a6;
4340 static const uint32_t mtlr_12
= 0x7d8803a6;
4341 static const uint32_t nop
= 0x60000000;
4342 static const uint32_t ori_0_0_0
= 0x60000000;
4343 static const uint32_t ori_11_11_0
= 0x616b0000;
4344 static const uint32_t ori_12_12_0
= 0x618c0000;
4345 static const uint32_t oris_12_12_0
= 0x658c0000;
4346 static const uint32_t sldi_11_11_34
= 0x796b1746;
4347 static const uint32_t sldi_12_12_32
= 0x799c07c6;
4348 static const uint32_t srdi_0_0_2
= 0x7800f082;
4349 static const uint32_t std_0_1
= 0xf8010000;
4350 static const uint32_t std_0_12
= 0xf80c0000;
4351 static const uint32_t std_2_1
= 0xf8410000;
4352 static const uint32_t std_11_1
= 0xf9610000;
4353 static const uint32_t stfd_0_1
= 0xd8010000;
4354 static const uint32_t stvx_0_12_0
= 0x7c0c01ce;
4355 static const uint32_t sub_11_11_12
= 0x7d6c5850;
4356 static const uint32_t sub_12_12_11
= 0x7d8b6050;
4357 static const uint32_t xor_2_12_12
= 0x7d826278;
4358 static const uint32_t xor_11_12_12
= 0x7d8b6278;
4360 static const uint64_t paddi_12_pc
= 0x0610000039800000ULL
;
4361 static const uint64_t pld_12_pc
= 0x04100000e5800000ULL
;
4362 static const uint64_t pnop
= 0x0700000000000000ULL
;
4364 // Write out the PLT.
4366 template<int size
, bool big_endian
>
4368 Output_data_plt_powerpc
<size
, big_endian
>::do_write(Output_file
* of
)
4370 if (!this->sym_ents_
.empty()
4371 && !parameters
->options().output_is_position_independent())
4373 const section_size_type offset
= this->offset();
4374 const section_size_type oview_size
4375 = convert_to_section_size_type(this->data_size());
4376 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
4377 unsigned char* pov
= oview
;
4378 unsigned char* endpov
= oview
+ oview_size
;
4380 for (typename
std::vector
<Local_plt_ent
>::iterator e
4381 = this->sym_ents_
.begin();
4382 e
!= this->sym_ents_
.end();
4385 typename
elfcpp::Elf_types
<size
>::Elf_Addr val
;
4386 Sized_symbol
<size
>* gsym
= NULL
;
4387 Powerpc_relobj
<size
, big_endian
>* obj
= NULL
;
4388 if (e
->rsym_
== -1u)
4390 gsym
= static_cast<Sized_symbol
<size
>*>(e
->u
.gsym_
);
4391 val
= gsym
->value();
4395 obj
= static_cast<Powerpc_relobj
<size
, big_endian
>*>(e
->u
.obj_
);
4396 val
= obj
->local_symbol(e
->rsym_
)->value(obj
, 0);
4398 if (this->targ_
->abiversion() >= 2)
4400 elfcpp::Swap
<size
, big_endian
>::writeval(pov
, val
);
4406 this->targ_
->symval_for_branch(this->symtab_
, gsym
, obj
,
4408 elfcpp::Swap
<size
, big_endian
>::writeval(pov
, val
);
4410 val
= this->targ_
->toc_pointer();
4411 elfcpp::Swap
<size
, big_endian
>::writeval(pov
, val
);
4413 if (this->plt_entry_size() > 16)
4415 elfcpp::Swap
<size
, big_endian
>::writeval(pov
, 0);
4420 gold_assert(pov
== endpov
);
4423 if (size
== 32 && (this->name_
[3] != 'I' && this->name_
[3] != 'L'))
4425 const section_size_type offset
= this->offset();
4426 const section_size_type oview_size
4427 = convert_to_section_size_type(this->data_size());
4428 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
4429 unsigned char* pov
= oview
;
4430 unsigned char* endpov
= oview
+ oview_size
;
4432 // The address of the .glink branch table
4433 const Output_data_glink
<size
, big_endian
>* glink
4434 = this->targ_
->glink_section();
4435 elfcpp::Elf_types
<32>::Elf_Addr branch_tab
= glink
->address();
4437 while (pov
< endpov
)
4439 elfcpp::Swap
<32, big_endian
>::writeval(pov
, branch_tab
);
4444 of
->write_output_view(offset
, oview_size
, oview
);
4448 // Create the PLT section.
4450 template<int size
, bool big_endian
>
4452 Target_powerpc
<size
, big_endian
>::make_plt_section(Symbol_table
* symtab
,
4455 if (this->plt_
== NULL
)
4457 if (this->got_
== NULL
)
4458 this->got_section(symtab
, layout
, GOT_TYPE_SMALL
);
4460 if (this->glink_
== NULL
)
4461 make_glink_section(layout
);
4463 // Ensure that .rela.dyn always appears before .rela.plt This is
4464 // necessary due to how, on PowerPC and some other targets, .rela.dyn
4465 // needs to include .rela.plt in its range.
4466 this->rela_dyn_section(layout
);
4468 Reloc_section
* plt_rel
= new Reloc_section(false);
4469 layout
->add_output_section_data(".rela.plt", elfcpp::SHT_RELA
,
4470 elfcpp::SHF_ALLOC
, plt_rel
,
4471 ORDER_DYNAMIC_PLT_RELOCS
, false);
4473 = new Output_data_plt_powerpc
<size
, big_endian
>(this, symtab
, plt_rel
,
4475 layout
->add_output_section_data(".plt",
4477 ? elfcpp::SHT_PROGBITS
4478 : elfcpp::SHT_NOBITS
),
4479 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
4486 Output_section
* rela_plt_os
= plt_rel
->output_section();
4487 rela_plt_os
->set_info_section(this->plt_
->output_section());
4491 // Create the IPLT section.
4493 template<int size
, bool big_endian
>
4495 Target_powerpc
<size
, big_endian
>::make_iplt_section(Symbol_table
* symtab
,
4498 if (this->iplt_
== NULL
)
4500 this->make_plt_section(symtab
, layout
);
4501 this->make_lplt_section(symtab
, layout
);
4503 Reloc_section
* iplt_rel
= new Reloc_section(false);
4504 if (this->rela_dyn_
->output_section())
4505 this->rela_dyn_
->output_section()->add_output_section_data(iplt_rel
);
4507 = new Output_data_plt_powerpc
<size
, big_endian
>(this, symtab
, iplt_rel
,
4509 if (this->plt_
->output_section())
4510 this->plt_
->output_section()->add_output_section_data(this->iplt_
);
4514 // Create the LPLT section.
4516 template<int size
, bool big_endian
>
4518 Target_powerpc
<size
, big_endian
>::make_lplt_section(Symbol_table
* symtab
,
4521 if (this->lplt_
== NULL
)
4523 Reloc_section
* lplt_rel
= NULL
;
4524 if (parameters
->options().output_is_position_independent())
4525 lplt_rel
= this->rela_dyn_section(layout
);
4527 = new Output_data_plt_powerpc
<size
, big_endian
>(this, symtab
, lplt_rel
,
4529 this->make_brlt_section(layout
);
4530 if (this->brlt_section_
&& this->brlt_section_
->output_section())
4531 this->brlt_section_
->output_section()
4532 ->add_output_section_data(this->lplt_
);
4534 layout
->add_output_section_data(".branch_lt",
4535 elfcpp::SHT_PROGBITS
,
4536 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
4543 // A section for huge long branch addresses, similar to plt section.
4545 template<int size
, bool big_endian
>
4546 class Output_data_brlt_powerpc
: public Output_section_data_build
4549 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
4550 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true,
4551 size
, big_endian
> Reloc_section
;
4553 Output_data_brlt_powerpc(Target_powerpc
<size
, big_endian
>* targ
,
4554 Reloc_section
* brlt_rel
)
4555 : Output_section_data_build(size
== 32 ? 4 : 8),
4563 this->reset_data_size();
4564 this->rel_
->reset_data_size();
4568 finalize_brlt_sizes()
4570 this->finalize_data_size();
4571 this->rel_
->finalize_data_size();
4574 // Add a reloc for an entry in the BRLT.
4576 add_reloc(Address to
, unsigned int off
)
4577 { this->rel_
->add_relative(elfcpp::R_POWERPC_RELATIVE
, this, off
, to
); }
4579 // Update section and reloc section size.
4581 set_current_size(unsigned int num_branches
)
4583 this->reset_address_and_file_offset();
4584 this->set_current_data_size(num_branches
* 16);
4585 this->finalize_data_size();
4586 Output_section
* os
= this->output_section();
4587 os
->set_section_offsets_need_adjustment();
4588 if (this->rel_
!= NULL
)
4590 const unsigned int reloc_size
= elfcpp::Elf_sizes
<size
>::rela_size
;
4591 this->rel_
->reset_address_and_file_offset();
4592 this->rel_
->set_current_data_size(num_branches
* reloc_size
);
4593 this->rel_
->finalize_data_size();
4594 Output_section
* os
= this->rel_
->output_section();
4595 os
->set_section_offsets_need_adjustment();
4601 do_adjust_output_section(Output_section
* os
)
4606 // Write to a map file.
4608 do_print_to_mapfile(Mapfile
* mapfile
) const
4609 { mapfile
->print_output_data(this, "** BRLT"); }
4612 // Write out the BRLT data.
4614 do_write(Output_file
*);
4616 // The reloc section.
4617 Reloc_section
* rel_
;
4618 Target_powerpc
<size
, big_endian
>* targ_
;
4621 // Make the branch lookup table section.
4623 template<int size
, bool big_endian
>
4625 Target_powerpc
<size
, big_endian
>::make_brlt_section(Layout
* layout
)
4627 if (size
== 64 && this->brlt_section_
== NULL
)
4629 Reloc_section
* brlt_rel
= NULL
;
4630 bool is_pic
= parameters
->options().output_is_position_independent();
4633 // When PIC we can't fill in .branch_lt but must initialise at
4634 // runtime via dynamic relocations.
4635 brlt_rel
= this->rela_dyn_section(layout
);
4638 = new Output_data_brlt_powerpc
<size
, big_endian
>(this, brlt_rel
);
4639 if (this->plt_
&& is_pic
&& this->plt_
->output_section())
4640 this->plt_
->output_section()
4641 ->add_output_section_data(this->brlt_section_
);
4643 layout
->add_output_section_data(".branch_lt",
4644 elfcpp::SHT_PROGBITS
,
4645 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
4646 this->brlt_section_
,
4652 // Write out .branch_lt when non-PIC.
4654 template<int size
, bool big_endian
>
4656 Output_data_brlt_powerpc
<size
, big_endian
>::do_write(Output_file
* of
)
4658 if (size
== 64 && !parameters
->options().output_is_position_independent())
4660 const section_size_type offset
= this->offset();
4661 const section_size_type oview_size
4662 = convert_to_section_size_type(this->data_size());
4663 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
4665 this->targ_
->write_branch_lookup_table(oview
);
4666 of
->write_output_view(offset
, oview_size
, oview
);
4670 static inline uint32_t
4676 static inline uint32_t
4682 static inline uint32_t
4685 return hi(a
+ 0x8000);
4688 static inline uint64_t
4691 return ((v
& 0x3ffff0000ULL
) << 16) | (v
& 0xffff);
4694 static inline uint64_t
4697 return (v
+ (1ULL << 33)) >> 34;
4703 static const unsigned char eh_frame_cie
[12];
4707 const unsigned char Eh_cie
<size
>::eh_frame_cie
[] =
4710 'z', 'R', 0, // Augmentation string.
4711 4, // Code alignment.
4712 0x80 - size
/ 8 , // Data alignment.
4714 1, // Augmentation size.
4715 (elfcpp::DW_EH_PE_pcrel
4716 | elfcpp::DW_EH_PE_sdata4
), // FDE encoding.
4717 elfcpp::DW_CFA_def_cfa
, 1, 0 // def_cfa: r1 offset 0.
4720 // Describe __glink_PLTresolve use of LR, 64-bit version ABIv1.
4721 static const unsigned char glink_eh_frame_fde_64v1
[] =
4723 0, 0, 0, 0, // Replaced with offset to .glink.
4724 0, 0, 0, 0, // Replaced with size of .glink.
4725 0, // Augmentation size.
4726 elfcpp::DW_CFA_advance_loc
+ 2,
4727 elfcpp::DW_CFA_register
, 65, 12,
4728 elfcpp::DW_CFA_advance_loc
+ 4,
4729 elfcpp::DW_CFA_restore_extended
, 65
4732 // Describe __glink_PLTresolve use of LR, 64-bit version ABIv2.
4733 static const unsigned char glink_eh_frame_fde_64v2
[] =
4735 0, 0, 0, 0, // Replaced with offset to .glink.
4736 0, 0, 0, 0, // Replaced with size of .glink.
4737 0, // Augmentation size.
4738 elfcpp::DW_CFA_advance_loc
+ 2,
4739 elfcpp::DW_CFA_register
, 65, 0,
4740 elfcpp::DW_CFA_advance_loc
+ 2,
4741 elfcpp::DW_CFA_restore_extended
, 65
4744 static const unsigned char glink_eh_frame_fde_64v2_localentry0
[] =
4746 0, 0, 0, 0, // Replaced with offset to .glink.
4747 0, 0, 0, 0, // Replaced with size of .glink.
4748 0, // Augmentation size.
4749 elfcpp::DW_CFA_advance_loc
+ 3,
4750 elfcpp::DW_CFA_register
, 65, 0,
4751 elfcpp::DW_CFA_advance_loc
+ 2,
4752 elfcpp::DW_CFA_restore_extended
, 65
4755 // Describe __glink_PLTresolve use of LR, 32-bit version.
4756 static const unsigned char glink_eh_frame_fde_32
[] =
4758 0, 0, 0, 0, // Replaced with offset to .glink.
4759 0, 0, 0, 0, // Replaced with size of .glink.
4760 0, // Augmentation size.
4761 elfcpp::DW_CFA_advance_loc
+ 2,
4762 elfcpp::DW_CFA_register
, 65, 0,
4763 elfcpp::DW_CFA_advance_loc
+ 4,
4764 elfcpp::DW_CFA_restore_extended
, 65
4767 static const unsigned char default_fde
[] =
4769 0, 0, 0, 0, // Replaced with offset to stubs.
4770 0, 0, 0, 0, // Replaced with size of stubs.
4771 0, // Augmentation size.
4772 elfcpp::DW_CFA_nop
, // Pad.
4777 template<bool big_endian
>
4779 write_insn(unsigned char* p
, uint32_t v
)
4781 elfcpp::Swap
<32, big_endian
>::writeval(p
, v
);
4785 static inline unsigned int
4788 if (!parameters
->options().user_set_plt_align())
4789 return size
== 64 ? 32 : 8;
4790 return 1 << parameters
->options().plt_align();
4793 // Stub_table holds information about plt and long branch stubs.
4794 // Stubs are built in an area following some input section determined
4795 // by group_sections(). This input section is converted to a relaxed
4796 // input section allowing it to be resized to accommodate the stubs
4798 template<int size
, bool big_endian
>
4799 class Stub_table
: public Output_relaxed_input_section
4804 Plt_stub_ent(unsigned int off
, unsigned int indx
)
4805 : off_(off
), indx_(indx
), tocoff_(0), p9off_(0), tsize_ (0), iter_(0),
4806 toc_(0), notoc_(0), p9notoc_(0), r2save_(0), localentry0_(0)
4811 // off_ points at p10 notoc stub, tocoff_ is offset from there to
4812 // toc stub, p9off_ is offset to p9notoc stub
4813 unsigned int tocoff_
: 8;
4814 unsigned int p9off_
: 8;
4815 // The size of the toc stub, used to locate blr on tls_get_addr stub.
4816 unsigned int tsize_
: 8;
4817 // Stub revision management
4818 unsigned int iter_
: 1;
4819 // The three types of stubs.
4820 unsigned int toc_
: 1;
4821 unsigned int notoc_
: 1;
4822 unsigned int p9notoc_
: 1;
4823 // Each with a possible variant saving r2 first
4824 unsigned int r2save_
: 1;
4825 // Handy cached info from symbol
4826 unsigned int localentry0_
: 1;
4828 struct Branch_stub_ent
4830 Branch_stub_ent(unsigned int off
)
4831 : off_(off
), tocoff_(0), p9off_(0), iter_(0), toc_(0), notoc_(0),
4832 p9notoc_(0), save_res_(0), other_(0)
4836 // off_ points at p10 notoc stub, tocoff_ is offset from there to
4837 // toc stub, p9off_ is offset to p9notoc stub
4838 unsigned int tocoff_
: 8;
4839 unsigned int p9off_
: 8;
4840 // Stub revision management
4841 unsigned int iter_
: 1;
4842 // Four types of stubs.
4843 unsigned int toc_
: 1;
4844 unsigned int notoc_
: 1;
4845 unsigned int p9notoc_
: 1;
4846 unsigned int save_res_
: 1;
4847 // Handy cached info from symbol
4848 unsigned int other_
: 3;
4850 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
4851 static const Address invalid_address
= static_cast<Address
>(0) - 1;
4853 Stub_table(Target_powerpc
<size
, big_endian
>* targ
,
4854 Output_section
* output_section
,
4855 const Output_section::Input_section
* owner
,
4857 : Output_relaxed_input_section(owner
->relobj(), owner
->shndx(),
4859 ->section_addralign(owner
->shndx())),
4860 targ_(targ
), plt_call_stubs_(), long_branch_stubs_(),
4861 orig_data_size_(owner
->current_data_size()),
4862 plt_size_(0), last_plt_size_(0),
4863 branch_size_(0), last_branch_size_(0), min_size_threshold_(0),
4864 need_save_res_(false), need_resize_(false), resizing_(false),
4867 this->set_output_section(output_section
);
4869 std::vector
<Output_relaxed_input_section
*> new_relaxed
;
4870 new_relaxed
.push_back(this);
4871 output_section
->convert_input_sections_to_relaxed_sections(new_relaxed
);
4874 // Add a plt call stub.
4876 add_plt_call_entry(Address
,
4877 const Sized_relobj_file
<size
, big_endian
>*,
4884 add_plt_call_entry(Address
,
4885 const Sized_relobj_file
<size
, big_endian
>*,
4891 // Find a given plt call stub.
4893 find_plt_call_entry(const Symbol
*) const;
4896 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
4897 unsigned int) const;
4900 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
4906 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
4911 // Add a long branch stub.
4913 add_long_branch_entry(unsigned int, Address
, Address
, unsigned int, bool);
4915 const Branch_stub_ent
*
4916 find_long_branch_entry(Address
) const;
4919 can_reach_stub(Address from
, unsigned int off
, unsigned int r_type
)
4921 Address max_branch_offset
= max_branch_delta
<size
>(r_type
);
4922 if (max_branch_offset
== 0)
4924 gold_assert(from
!= invalid_address
);
4925 Address loc
= off
+ this->stub_address();
4926 return loc
- from
+ max_branch_offset
< 2 * max_branch_offset
;
4930 clear_stubs(bool all
)
4932 this->plt_call_stubs_
.clear();
4933 this->plt_size_
= 0;
4934 this->long_branch_stubs_
.clear();
4935 this->branch_size_
= 0;
4936 this->need_save_res_
= false;
4939 this->last_plt_size_
= 0;
4940 this->last_branch_size_
= 0;
4946 { return need_resize_
; }
4949 set_resizing(bool val
)
4951 this->resizing_
= val
;
4954 this->need_resize_
= false;
4955 this->plt_size_
= 0;
4956 this->branch_size_
= 0;
4957 this->need_save_res_
= false;
4962 set_address_and_size(const Output_section
* os
, Address off
)
4964 Address start_off
= off
;
4965 off
+= this->orig_data_size_
;
4966 Address my_size
= this->plt_size_
+ this->branch_size_
;
4967 if (this->need_save_res_
)
4968 my_size
+= this->targ_
->savres_section()->data_size();
4970 off
= align_address(off
, this->stub_align());
4971 // Include original section size and alignment padding in size
4972 my_size
+= off
- start_off
;
4973 // Ensure new size is always larger than min size
4974 // threshold. Alignment requirement is included in "my_size", so
4975 // increase "my_size" does not invalidate alignment.
4976 if (my_size
< this->min_size_threshold_
)
4977 my_size
= this->min_size_threshold_
;
4978 this->reset_address_and_file_offset();
4979 this->set_current_data_size(my_size
);
4980 this->set_address_and_file_offset(os
->address() + start_off
,
4981 os
->offset() + start_off
);
4986 stub_address() const
4988 return align_address(this->address() + this->orig_data_size_
,
4989 this->stub_align());
4995 return align_address(this->offset() + this->orig_data_size_
,
4996 this->stub_align());
5001 { return this->plt_size_
; }
5005 { return this->branch_size_
; }
5008 set_min_size_threshold(Address min_size
)
5009 { this->min_size_threshold_
= min_size
; }
5012 define_stub_syms(Symbol_table
*);
5017 Output_section
* os
= this->output_section();
5018 if (os
->addralign() < this->stub_align())
5020 os
->set_addralign(this->stub_align());
5021 // FIXME: get rid of the insane checkpointing.
5022 // We can't increase alignment of the input section to which
5023 // stubs are attached; The input section may be .init which
5024 // is pasted together with other .init sections to form a
5025 // function. Aligning might insert zero padding resulting in
5026 // sigill. However we do need to increase alignment of the
5027 // output section so that the align_address() on offset in
5028 // set_address_and_size() adds the same padding as the
5029 // align_address() on address in stub_address().
5030 // What's more, we need this alignment for the layout done in
5031 // relaxation_loop_body() so that the output section starts at
5032 // a suitably aligned address.
5033 os
->checkpoint_set_addralign(this->stub_align());
5035 if (this->last_plt_size_
!= this->plt_size_
5036 || this->last_branch_size_
!= this->branch_size_
)
5038 this->last_plt_size_
= this->plt_size_
;
5039 this->last_branch_size_
= this->branch_size_
;
5045 // Add .eh_frame info for this stub section.
5047 add_eh_frame(Layout
* layout
);
5049 // Remove .eh_frame info for this stub section.
5051 remove_eh_frame(Layout
* layout
);
5053 Target_powerpc
<size
, big_endian
>*
5059 class Plt_stub_key_hash
;
5060 typedef Unordered_map
<Plt_stub_key
, Plt_stub_ent
,
5061 Plt_stub_key_hash
> Plt_stub_entries
;
5062 class Branch_stub_key
;
5063 class Branch_stub_key_hash
;
5064 typedef Unordered_map
<Branch_stub_key
, Branch_stub_ent
,
5065 Branch_stub_key_hash
> Branch_stub_entries
;
5067 // Alignment of stub section.
5071 unsigned int min_align
= size
== 64 ? 32 : 16;
5072 unsigned int user_align
= 1 << parameters
->options().plt_align();
5073 return std::max(user_align
, min_align
);
5076 // Return the plt offset for the given call stub.
5078 plt_off(typename
Plt_stub_entries::const_iterator p
,
5079 const Output_data_plt_powerpc
<size
, big_endian
>** sec
) const
5081 const Symbol
* gsym
= p
->first
.sym_
;
5083 return this->targ_
->plt_off(gsym
, sec
);
5086 const Sized_relobj_file
<size
, big_endian
>* relobj
= p
->first
.object_
;
5087 unsigned int local_sym_index
= p
->first
.locsym_
;
5088 return this->targ_
->plt_off(relobj
, local_sym_index
, sec
);
5092 // Size of a given plt call stub.
5094 plt_call_size(typename
Plt_stub_entries::iterator p
) const;
5097 plt_call_align(unsigned int bytes
) const
5099 unsigned int align
= param_plt_align
<size
>();
5100 return (bytes
+ align
- 1) & -align
;
5103 // Return long branch stub size.
5105 branch_stub_size(typename
Branch_stub_entries::iterator p
,
5109 build_tls_opt_head(unsigned char** pp
, bool save_lr
);
5112 build_tls_opt_tail(unsigned char* p
);
5115 plt_error(const Plt_stub_key
& p
);
5119 do_write(Output_file
*);
5121 // Plt call stub keys.
5125 Plt_stub_key(const Symbol
* sym
)
5126 : sym_(sym
), object_(0), addend_(0), locsym_(0)
5129 Plt_stub_key(const Sized_relobj_file
<size
, big_endian
>* object
,
5130 unsigned int locsym_index
)
5131 : sym_(NULL
), object_(object
), addend_(0), locsym_(locsym_index
)
5134 Plt_stub_key(const Sized_relobj_file
<size
, big_endian
>* object
,
5136 unsigned int r_type
,
5138 : sym_(sym
), object_(0), addend_(0), locsym_(0)
5141 this->addend_
= addend
;
5142 else if (parameters
->options().output_is_position_independent()
5143 && (r_type
== elfcpp::R_PPC_PLTREL24
5144 || r_type
== elfcpp::R_POWERPC_PLTCALL
))
5146 this->addend_
= addend
;
5147 if (this->addend_
>= 32768)
5148 this->object_
= object
;
5152 Plt_stub_key(const Sized_relobj_file
<size
, big_endian
>* object
,
5153 unsigned int locsym_index
,
5154 unsigned int r_type
,
5156 : sym_(NULL
), object_(object
), addend_(0), locsym_(locsym_index
)
5159 this->addend_
= addend
;
5160 else if (parameters
->options().output_is_position_independent()
5161 && (r_type
== elfcpp::R_PPC_PLTREL24
5162 || r_type
== elfcpp::R_POWERPC_PLTCALL
))
5163 this->addend_
= addend
;
5166 bool operator==(const Plt_stub_key
& that
) const
5168 return (this->sym_
== that
.sym_
5169 && this->object_
== that
.object_
5170 && this->addend_
== that
.addend_
5171 && this->locsym_
== that
.locsym_
);
5175 const Sized_relobj_file
<size
, big_endian
>* object_
;
5176 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend_
;
5177 unsigned int locsym_
;
5180 class Plt_stub_key_hash
5183 size_t operator()(const Plt_stub_key
& ent
) const
5185 return (reinterpret_cast<uintptr_t>(ent
.sym_
)
5186 ^ reinterpret_cast<uintptr_t>(ent
.object_
)
5192 // Long branch stub keys.
5193 class Branch_stub_key
5196 Branch_stub_key(Address to
)
5200 bool operator==(const Branch_stub_key
& that
) const
5202 return this->dest_
== that
.dest_
;
5208 class Branch_stub_key_hash
5211 size_t operator()(const Branch_stub_key
& key
) const
5212 { return key
.dest_
; }
5215 // In a sane world this would be a global.
5216 Target_powerpc
<size
, big_endian
>* targ_
;
5217 // Map sym/object/addend to stub offset.
5218 Plt_stub_entries plt_call_stubs_
;
5219 // Map destination address to stub offset.
5220 Branch_stub_entries long_branch_stubs_
;
5221 // size of input section
5222 section_size_type orig_data_size_
;
5224 section_size_type plt_size_
, last_plt_size_
, branch_size_
, last_branch_size_
;
5225 // Some rare cases cause (PR/20529) fluctuation in stub table
5226 // size, which leads to an endless relax loop. This is to be fixed
5227 // by, after the first few iterations, allowing only increase of
5228 // stub table size. This variable sets the minimal possible size of
5229 // a stub table, it is zero for the first few iterations, then
5230 // increases monotonically.
5231 Address min_size_threshold_
;
5232 // Set if this stub group needs a copy of out-of-line register
5233 // save/restore functions.
5234 bool need_save_res_
;
5235 // Set when notoc_/r2save_ changes after sizing a stub
5237 // Set when resizing stubs
5239 // Per stub table unique identifier.
5243 // Add a plt call stub, if we do not already have one for this
5244 // sym/object/addend combo.
5246 template<int size
, bool big_endian
>
5248 Stub_table
<size
, big_endian
>::add_plt_call_entry(
5250 const Sized_relobj_file
<size
, big_endian
>* object
,
5252 unsigned int r_type
,
5256 Plt_stub_key
key(object
, gsym
, r_type
, addend
);
5257 Plt_stub_ent
ent(this->plt_size_
, this->plt_call_stubs_
.size());
5258 std::pair
<typename
Plt_stub_entries::iterator
, bool> p
5259 = this->plt_call_stubs_
.insert(std::make_pair(key
, ent
));
5263 && this->targ_
->is_elfv2_localentry0(gsym
))
5265 p
.first
->second
.localentry0_
= 1;
5266 this->targ_
->set_has_localentry0();
5268 if (r_type
== elfcpp::R_PPC64_REL24_NOTOC
5269 || r_type
== elfcpp::R_PPC64_REL24_P9NOTOC
)
5271 if (this->targ_
->power10_stubs()
5272 && (!this->targ_
->power10_stubs_auto()
5273 || r_type
== elfcpp::R_PPC64_REL24_NOTOC
))
5275 if (!p
.second
&& !p
.first
->second
.notoc_
)
5276 this->need_resize_
= true;
5277 p
.first
->second
.notoc_
= 1;
5281 if (!p
.second
&& !p
.first
->second
.p9notoc_
)
5282 this->need_resize_
= true;
5283 p
.first
->second
.p9notoc_
= 1;
5288 if (!p
.second
&& !p
.first
->second
.toc_
)
5289 this->need_resize_
= true;
5290 p
.first
->second
.toc_
= 1;
5291 if (!tocsave
&& !p
.first
->second
.localentry0_
)
5293 if (!p
.second
&& !p
.first
->second
.r2save_
)
5294 this->need_resize_
= true;
5295 p
.first
->second
.r2save_
= 1;
5299 if (p
.second
|| (this->resizing_
&& !p
.first
->second
.iter_
))
5301 if (this->resizing_
)
5303 p
.first
->second
.iter_
= 1;
5304 p
.first
->second
.off_
= this->plt_size_
;
5306 this->plt_size_
+= this->plt_call_size(p
.first
);
5307 if (this->targ_
->is_tls_get_addr_opt(gsym
))
5308 this->targ_
->set_has_tls_get_addr_opt();
5310 return this->can_reach_stub(from
, p
.first
->second
.off_
, r_type
);
5313 template<int size
, bool big_endian
>
5315 Stub_table
<size
, big_endian
>::add_plt_call_entry(
5317 const Sized_relobj_file
<size
, big_endian
>* object
,
5318 unsigned int locsym_index
,
5319 unsigned int r_type
,
5323 Plt_stub_key
key(object
, locsym_index
, r_type
, addend
);
5324 Plt_stub_ent
ent(this->plt_size_
, this->plt_call_stubs_
.size());
5325 std::pair
<typename
Plt_stub_entries::iterator
, bool> p
5326 = this->plt_call_stubs_
.insert(std::make_pair(key
, ent
));
5330 && this->targ_
->is_elfv2_localentry0(object
, locsym_index
))
5332 p
.first
->second
.localentry0_
= 1;
5333 this->targ_
->set_has_localentry0();
5335 if (r_type
== elfcpp::R_PPC64_REL24_NOTOC
5336 || r_type
== elfcpp::R_PPC64_REL24_P9NOTOC
)
5338 if (this->targ_
->power10_stubs()
5339 && (!this->targ_
->power10_stubs_auto()
5340 || r_type
== elfcpp::R_PPC64_REL24_NOTOC
))
5342 if (!p
.second
&& !p
.first
->second
.notoc_
)
5343 this->need_resize_
= true;
5344 p
.first
->second
.notoc_
= 1;
5348 if (!p
.second
&& !p
.first
->second
.p9notoc_
)
5349 this->need_resize_
= true;
5350 p
.first
->second
.p9notoc_
= 1;
5355 if (!p
.second
&& !p
.first
->second
.toc_
)
5356 this->need_resize_
= true;
5357 p
.first
->second
.toc_
= 1;
5358 if (!tocsave
&& !p
.first
->second
.localentry0_
)
5360 if (!p
.second
&& !p
.first
->second
.r2save_
)
5361 this->need_resize_
= true;
5362 p
.first
->second
.r2save_
= 1;
5366 if (p
.second
|| (this->resizing_
&& !p
.first
->second
.iter_
))
5368 if (this->resizing_
)
5370 p
.first
->second
.iter_
= 1;
5371 p
.first
->second
.off_
= this->plt_size_
;
5373 this->plt_size_
+= this->plt_call_size(p
.first
);
5375 return this->can_reach_stub(from
, p
.first
->second
.off_
, r_type
);
5378 // Find a plt call stub.
5380 template<int size
, bool big_endian
>
5381 const typename Stub_table
<size
, big_endian
>::Plt_stub_ent
*
5382 Stub_table
<size
, big_endian
>::find_plt_call_entry(
5383 const Sized_relobj_file
<size
, big_endian
>* object
,
5385 unsigned int r_type
,
5386 Address addend
) const
5388 Plt_stub_key
key(object
, gsym
, r_type
, addend
);
5389 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(key
);
5390 if (p
== this->plt_call_stubs_
.end())
5395 template<int size
, bool big_endian
>
5396 const typename Stub_table
<size
, big_endian
>::Plt_stub_ent
*
5397 Stub_table
<size
, big_endian
>::find_plt_call_entry(const Symbol
* gsym
) const
5399 Plt_stub_key
key(gsym
);
5400 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(key
);
5401 if (p
== this->plt_call_stubs_
.end())
5406 template<int size
, bool big_endian
>
5407 const typename Stub_table
<size
, big_endian
>::Plt_stub_ent
*
5408 Stub_table
<size
, big_endian
>::find_plt_call_entry(
5409 const Sized_relobj_file
<size
, big_endian
>* object
,
5410 unsigned int locsym_index
,
5411 unsigned int r_type
,
5412 Address addend
) const
5414 Plt_stub_key
key(object
, locsym_index
, r_type
, addend
);
5415 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(key
);
5416 if (p
== this->plt_call_stubs_
.end())
5421 template<int size
, bool big_endian
>
5422 const typename Stub_table
<size
, big_endian
>::Plt_stub_ent
*
5423 Stub_table
<size
, big_endian
>::find_plt_call_entry(
5424 const Sized_relobj_file
<size
, big_endian
>* object
,
5425 unsigned int locsym_index
) const
5427 Plt_stub_key
key(object
, locsym_index
);
5428 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(key
);
5429 if (p
== this->plt_call_stubs_
.end())
5434 // Add a long branch stub if we don't already have one to given
5437 template<int size
, bool big_endian
>
5439 Stub_table
<size
, big_endian
>::add_long_branch_entry(
5440 unsigned int r_type
,
5446 Branch_stub_key
key(to
);
5447 Branch_stub_ent
ent(this->branch_size_
);
5448 std::pair
<typename
Branch_stub_entries::iterator
, bool> p
5449 = this->long_branch_stubs_
.insert(std::make_pair(key
, ent
));
5452 if (!p
.second
&& !p
.first
->second
.save_res_
)
5453 this->need_resize_
= true;
5454 p
.first
->second
.save_res_
= true;
5457 && (r_type
== elfcpp::R_PPC64_REL24_NOTOC
5458 || r_type
== elfcpp::R_PPC64_REL24_P9NOTOC
))
5460 if (this->targ_
->power10_stubs()
5461 && (!this->targ_
->power10_stubs_auto()
5462 || r_type
== elfcpp::R_PPC64_REL24_NOTOC
))
5464 if (!p
.second
&& !p
.first
->second
.notoc_
)
5465 this->need_resize_
= true;
5466 p
.first
->second
.notoc_
= true;
5470 if (!p
.second
&& !p
.first
->second
.p9notoc_
)
5471 this->need_resize_
= true;
5472 p
.first
->second
.p9notoc_
= true;
5477 if (!p
.second
&& !p
.first
->second
.toc_
)
5478 this->need_resize_
= true;
5479 p
.first
->second
.toc_
= true;
5481 if (size
== 64 && p
.first
->second
.other_
== 0)
5482 p
.first
->second
.other_
= other
;
5483 if (p
.second
|| (this->resizing_
&& !p
.first
->second
.iter_
))
5485 if (this->resizing_
)
5487 p
.first
->second
.iter_
= 1;
5488 p
.first
->second
.off_
= this->branch_size_
;
5491 this->need_save_res_
= true;
5494 bool need_lt
= false;
5495 unsigned int stub_size
= this->branch_stub_size(p
.first
, &need_lt
);
5496 this->branch_size_
+= stub_size
;
5497 if (size
== 64 && need_lt
)
5498 this->targ_
->add_branch_lookup_table(to
);
5501 return this->can_reach_stub(from
, p
.first
->second
.off_
, r_type
);
5504 // Find long branch stub offset.
5506 template<int size
, bool big_endian
>
5507 const typename Stub_table
<size
, big_endian
>::Branch_stub_ent
*
5508 Stub_table
<size
, big_endian
>::find_long_branch_entry(Address to
) const
5510 Branch_stub_key
key(to
);
5511 typename
Branch_stub_entries::const_iterator p
5512 = this->long_branch_stubs_
.find(key
);
5513 if (p
== this->long_branch_stubs_
.end())
5518 template<bool big_endian
>
5520 eh_advance (std::vector
<unsigned char>& fde
, unsigned int delta
)
5524 fde
.push_back(elfcpp::DW_CFA_advance_loc
+ delta
);
5525 else if (delta
< 256)
5527 fde
.push_back(elfcpp::DW_CFA_advance_loc1
);
5528 fde
.push_back(delta
);
5530 else if (delta
< 65536)
5532 fde
.resize(fde
.size() + 3);
5533 unsigned char *p
= &*fde
.end() - 3;
5534 *p
++ = elfcpp::DW_CFA_advance_loc2
;
5535 elfcpp::Swap
<16, big_endian
>::writeval(p
, delta
);
5539 fde
.resize(fde
.size() + 5);
5540 unsigned char *p
= &*fde
.end() - 5;
5541 *p
++ = elfcpp::DW_CFA_advance_loc4
;
5542 elfcpp::Swap
<32, big_endian
>::writeval(p
, delta
);
5546 template<typename T
>
5548 stub_sort(T s1
, T s2
)
5550 return s1
->second
.off_
< s2
->second
.off_
;
5553 // Add .eh_frame info for this stub section. Unlike other linker
5554 // generated .eh_frame this is added late in the link, because we
5555 // only want the .eh_frame info if this particular stub section is
5558 template<int size
, bool big_endian
>
5560 Stub_table
<size
, big_endian
>::add_eh_frame(Layout
* layout
)
5563 || !parameters
->options().ld_generated_unwind_info())
5566 // Since we add stub .eh_frame info late, it must be placed
5567 // after all other linker generated .eh_frame info so that
5568 // merge mapping need not be updated for input sections.
5569 // There is no provision to use a different CIE to that used
5571 if (!this->targ_
->has_glink())
5574 typedef typename
Plt_stub_entries::iterator plt_iter
;
5575 std::vector
<plt_iter
> calls
;
5576 if (!this->plt_call_stubs_
.empty())
5577 for (plt_iter cs
= this->plt_call_stubs_
.begin();
5578 cs
!= this->plt_call_stubs_
.end();
5580 if (cs
->second
.p9notoc_
5582 && cs
->second
.r2save_
5583 && !cs
->second
.localentry0_
5584 && this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
)))
5585 calls
.push_back(cs
);
5586 if (calls
.size() > 1)
5587 std::stable_sort(calls
.begin(), calls
.end(),
5588 stub_sort
<plt_iter
>);
5590 typedef typename
Branch_stub_entries::const_iterator branch_iter
;
5591 std::vector
<branch_iter
> branches
;
5592 if (!this->long_branch_stubs_
.empty()
5593 && !this->targ_
->power10_stubs())
5594 for (branch_iter bs
= this->long_branch_stubs_
.begin();
5595 bs
!= this->long_branch_stubs_
.end();
5597 if (bs
->second
.notoc_
)
5598 branches
.push_back(bs
);
5599 if (branches
.size() > 1)
5600 std::stable_sort(branches
.begin(), branches
.end(),
5601 stub_sort
<branch_iter
>);
5603 if (calls
.empty() && branches
.empty())
5606 unsigned int last_eh_loc
= 0;
5607 // offset pcrel sdata4, size udata4, and augmentation size byte.
5608 std::vector
<unsigned char> fde(9, 0);
5610 for (unsigned int i
= 0; i
< calls
.size(); i
++)
5612 plt_iter cs
= calls
[i
];
5613 unsigned int off
= cs
->second
.off_
;
5614 // The __tls_get_addr_opt call stub needs to describe where
5615 // it saves LR, to support exceptions that might be thrown
5616 // from __tls_get_addr, and to support asynchronous exceptions.
5617 if (this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
5621 && cs
->second
.r2save_
5622 && !cs
->second
.localentry0_
)
5624 off
+= cs
->second
.tocoff_
+ 2 * 4;
5625 eh_advance
<big_endian
>(fde
, off
- last_eh_loc
);
5626 fde
.resize(fde
.size() + 6);
5627 unsigned char* p
= &*fde
.end() - 6;
5628 *p
++ = elfcpp::DW_CFA_offset_extended_sf
;
5630 *p
++ = -(this->targ_
->stk_linker() / 8) & 0x7f;
5631 unsigned int delta
= cs
->second
.tsize_
- 9 * 4 - 4;
5632 *p
++ = elfcpp::DW_CFA_advance_loc
+ delta
/ 4;
5633 *p
++ = elfcpp::DW_CFA_restore_extended
;
5635 last_eh_loc
= off
+ delta
;
5636 off
= cs
->second
.off_
+ 7 * 4;
5639 // notoc stubs also should describe LR changes, to support
5640 // asynchronous exceptions.
5641 if (cs
->second
.p9notoc_
)
5643 off
+= cs
->second
.p9off_
;
5644 off
+= (cs
->second
.r2save_
? 4 : 0) + 8;
5645 eh_advance
<big_endian
>(fde
, off
- last_eh_loc
);
5646 fde
.resize(fde
.size() + 6);
5647 unsigned char* p
= &*fde
.end() - 6;
5648 *p
++ = elfcpp::DW_CFA_register
;
5651 *p
++ = elfcpp::DW_CFA_advance_loc
+ 8 / 4;
5652 *p
++ = elfcpp::DW_CFA_restore_extended
;
5654 last_eh_loc
= off
+ 8;
5658 for (unsigned int i
= 0; i
< branches
.size(); i
++)
5660 branch_iter bs
= branches
[i
];
5661 unsigned int off
= bs
->second
.off_
+ 8;
5662 eh_advance
<big_endian
>(fde
, off
- last_eh_loc
);
5663 fde
.resize(fde
.size() + 6);
5664 unsigned char* p
= &*fde
.end() - 6;
5665 *p
++ = elfcpp::DW_CFA_register
;
5668 *p
++ = elfcpp::DW_CFA_advance_loc
+ 8 / 4;
5669 *p
++ = elfcpp::DW_CFA_restore_extended
;
5671 last_eh_loc
= off
+ 8;
5674 layout
->add_eh_frame_for_plt(this,
5675 Eh_cie
<size
>::eh_frame_cie
,
5676 sizeof (Eh_cie
<size
>::eh_frame_cie
),
5677 &*fde
.begin(), fde
.size());
5680 template<int size
, bool big_endian
>
5682 Stub_table
<size
, big_endian
>::remove_eh_frame(Layout
* layout
)
5685 && parameters
->options().ld_generated_unwind_info()
5686 && this->targ_
->has_glink())
5687 layout
->remove_eh_frame_for_plt(this,
5688 Eh_cie
<size
>::eh_frame_cie
,
5689 sizeof (Eh_cie
<size
>::eh_frame_cie
));
5692 // A class to handle .glink.
5694 template<int size
, bool big_endian
>
5695 class Output_data_glink
: public Output_section_data
5698 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
5699 static const Address invalid_address
= static_cast<Address
>(0) - 1;
5701 Output_data_glink(Target_powerpc
<size
, big_endian
>* targ
)
5702 : Output_section_data(16), targ_(targ
), global_entry_stubs_(),
5703 end_branch_table_(), ge_size_(0)
5707 add_eh_frame(Layout
* layout
);
5710 add_global_entry(const Symbol
*);
5713 find_global_entry(const Symbol
*) const;
5716 global_entry_align(unsigned int off
) const
5718 unsigned int align
= param_plt_align
<size
>();
5719 return (off
+ align
- 1) & -align
;
5723 global_entry_off() const
5725 return this->global_entry_align(this->end_branch_table_
);
5729 global_entry_address() const
5731 gold_assert(this->is_data_size_valid());
5732 return this->address() + this->global_entry_off();
5736 pltresolve_size() const
5740 + (this->targ_
->abiversion() < 2 ? 11 * 4
5741 : this->targ_
->has_localentry0() ? 14 * 4 : 13 * 4));
5746 // Write to a map file.
5748 do_print_to_mapfile(Mapfile
* mapfile
) const
5749 { mapfile
->print_output_data(this, _("** glink")); }
5753 set_final_data_size();
5757 do_write(Output_file
*);
5759 // Allows access to .got and .plt for do_write.
5760 Target_powerpc
<size
, big_endian
>* targ_
;
5762 // Map sym to stub offset.
5763 typedef Unordered_map
<const Symbol
*, unsigned int> Global_entry_stub_entries
;
5764 Global_entry_stub_entries global_entry_stubs_
;
5766 unsigned int end_branch_table_
, ge_size_
;
5769 template<int size
, bool big_endian
>
5771 Output_data_glink
<size
, big_endian
>::add_eh_frame(Layout
* layout
)
5773 if (!parameters
->options().ld_generated_unwind_info())
5778 if (this->targ_
->abiversion() < 2)
5779 layout
->add_eh_frame_for_plt(this,
5780 Eh_cie
<64>::eh_frame_cie
,
5781 sizeof (Eh_cie
<64>::eh_frame_cie
),
5782 glink_eh_frame_fde_64v1
,
5783 sizeof (glink_eh_frame_fde_64v1
));
5784 else if (this->targ_
->has_localentry0())
5785 layout
->add_eh_frame_for_plt(this,
5786 Eh_cie
<64>::eh_frame_cie
,
5787 sizeof (Eh_cie
<64>::eh_frame_cie
),
5788 glink_eh_frame_fde_64v2_localentry0
,
5789 sizeof (glink_eh_frame_fde_64v2
));
5791 layout
->add_eh_frame_for_plt(this,
5792 Eh_cie
<64>::eh_frame_cie
,
5793 sizeof (Eh_cie
<64>::eh_frame_cie
),
5794 glink_eh_frame_fde_64v2
,
5795 sizeof (glink_eh_frame_fde_64v2
));
5799 // 32-bit .glink can use the default since the CIE return
5800 // address reg, LR, is valid.
5801 layout
->add_eh_frame_for_plt(this,
5802 Eh_cie
<32>::eh_frame_cie
,
5803 sizeof (Eh_cie
<32>::eh_frame_cie
),
5805 sizeof (default_fde
));
5806 // Except where LR is used in a PIC __glink_PLTresolve.
5807 if (parameters
->options().output_is_position_independent())
5808 layout
->add_eh_frame_for_plt(this,
5809 Eh_cie
<32>::eh_frame_cie
,
5810 sizeof (Eh_cie
<32>::eh_frame_cie
),
5811 glink_eh_frame_fde_32
,
5812 sizeof (glink_eh_frame_fde_32
));
5816 template<int size
, bool big_endian
>
5818 Output_data_glink
<size
, big_endian
>::add_global_entry(const Symbol
* gsym
)
5820 unsigned int off
= this->global_entry_align(this->ge_size_
);
5821 std::pair
<typename
Global_entry_stub_entries::iterator
, bool> p
5822 = this->global_entry_stubs_
.insert(std::make_pair(gsym
, off
));
5824 this->ge_size_
= off
+ 16;
5827 template<int size
, bool big_endian
>
5828 typename Output_data_glink
<size
, big_endian
>::Address
5829 Output_data_glink
<size
, big_endian
>::find_global_entry(const Symbol
* gsym
) const
5831 typename
Global_entry_stub_entries::const_iterator p
5832 = this->global_entry_stubs_
.find(gsym
);
5833 return p
== this->global_entry_stubs_
.end() ? invalid_address
: p
->second
;
5836 template<int size
, bool big_endian
>
5838 Output_data_glink
<size
, big_endian
>::set_final_data_size()
5840 unsigned int count
= this->targ_
->plt_entry_count();
5841 section_size_type total
= 0;
5847 // space for branch table
5848 total
+= 4 * (count
- 1);
5850 total
+= -total
& 15;
5851 total
+= this->pltresolve_size();
5855 total
+= this->pltresolve_size();
5857 // space for branch table
5859 if (this->targ_
->abiversion() < 2)
5863 total
+= 4 * (count
- 0x8000);
5867 this->end_branch_table_
= total
;
5868 total
= this->global_entry_align(total
);
5869 total
+= this->ge_size_
;
5871 this->set_data_size(total
);
5874 // Define symbols on stubs, identifying the stub.
5876 template<int size
, bool big_endian
>
5878 Stub_table
<size
, big_endian
>::define_stub_syms(Symbol_table
* symtab
)
5880 if (!this->plt_call_stubs_
.empty())
5882 // The key for the plt call stub hash table includes addresses,
5883 // therefore traversal order depends on those addresses, which
5884 // can change between runs if gold is a PIE. Unfortunately the
5885 // output .symtab ordering depends on the order in which symbols
5886 // are added to the linker symtab. We want reproducible output
5887 // so must sort the call stub symbols.
5888 typedef typename
Plt_stub_entries::iterator plt_iter
;
5889 std::vector
<plt_iter
> sorted
;
5890 sorted
.resize(this->plt_call_stubs_
.size());
5892 for (plt_iter cs
= this->plt_call_stubs_
.begin();
5893 cs
!= this->plt_call_stubs_
.end();
5895 sorted
[cs
->second
.indx_
] = cs
;
5897 for (unsigned int i
= 0; i
< this->plt_call_stubs_
.size(); ++i
)
5899 plt_iter cs
= sorted
[i
];
5902 if (cs
->first
.addend_
!= 0)
5903 sprintf(add
, "+%x", static_cast<uint32_t>(cs
->first
.addend_
));
5906 if (cs
->first
.object_
)
5908 const Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
5909 <const Powerpc_relobj
<size
, big_endian
>*>(cs
->first
.object_
);
5910 sprintf(obj
, "%x:", ppcobj
->uniq());
5913 const char *symname
;
5914 if (cs
->first
.sym_
== NULL
)
5916 sprintf(localname
, "%x", cs
->first
.locsym_
);
5917 symname
= localname
;
5919 else if (this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
5920 symname
= this->targ_
->tls_get_addr_opt()->name();
5922 symname
= cs
->first
.sym_
->name();
5923 char* name
= new char[8 + 10 + strlen(obj
) + strlen(symname
) + strlen(add
) + 1];
5924 sprintf(name
, "%08x.plt_call.%s%s%s", this->uniq_
, obj
, symname
, add
);
5926 = this->stub_address() - this->address() + cs
->second
.off_
;
5927 unsigned int stub_size
= this->plt_call_size(cs
);
5928 this->targ_
->define_local(symtab
, name
, this, value
, stub_size
);
5932 typedef typename
Branch_stub_entries::iterator branch_iter
;
5933 for (branch_iter bs
= this->long_branch_stubs_
.begin();
5934 bs
!= this->long_branch_stubs_
.end();
5937 if (bs
->second
.save_res_
)
5940 char* name
= new char[8 + 13 + 16 + 1];
5941 sprintf(name
, "%08x.long_branch.%llx", this->uniq_
,
5942 static_cast<unsigned long long>(bs
->first
.dest_
));
5943 Address value
= (this->stub_address() - this->address()
5944 + this->plt_size_
+ bs
->second
.off_
);
5945 bool need_lt
= false;
5946 unsigned int stub_size
= this->branch_stub_size(bs
, &need_lt
);
5947 this->targ_
->define_local(symtab
, name
, this, value
, stub_size
);
5951 // Emit the start of a __tls_get_addr_opt plt call stub.
5953 template<int size
, bool big_endian
>
5955 Stub_table
<size
, big_endian
>::build_tls_opt_head(unsigned char** pp
,
5958 unsigned char* p
= *pp
;
5961 write_insn
<big_endian
>(p
, ld_11_3
+ 0);
5963 write_insn
<big_endian
>(p
, ld_12_3
+ 8);
5965 write_insn
<big_endian
>(p
, mr_0_3
);
5967 write_insn
<big_endian
>(p
, cmpdi_11_0
);
5969 write_insn
<big_endian
>(p
, add_3_12_13
);
5971 write_insn
<big_endian
>(p
, beqlr
);
5973 write_insn
<big_endian
>(p
, mr_3_0
);
5977 write_insn
<big_endian
>(p
, mflr_11
);
5979 write_insn
<big_endian
>(p
, (std_11_1
+ this->targ_
->stk_linker()));
5985 write_insn
<big_endian
>(p
, lwz_11_3
+ 0);
5987 write_insn
<big_endian
>(p
, lwz_12_3
+ 4);
5989 write_insn
<big_endian
>(p
, mr_0_3
);
5991 write_insn
<big_endian
>(p
, cmpwi_11_0
);
5993 write_insn
<big_endian
>(p
, add_3_12_2
);
5995 write_insn
<big_endian
>(p
, beqlr
);
5997 write_insn
<big_endian
>(p
, mr_3_0
);
5999 write_insn
<big_endian
>(p
, nop
);
6005 // Emit the tail of a __tls_get_addr_opt plt call stub.
6007 template<int size
, bool big_endian
>
6009 Stub_table
<size
, big_endian
>::build_tls_opt_tail(unsigned char* p
)
6011 write_insn
<big_endian
>(p
, bctrl
);
6013 write_insn
<big_endian
>(p
, ld_2_1
+ this->targ_
->stk_toc());
6015 write_insn
<big_endian
>(p
, ld_11_1
+ this->targ_
->stk_linker());
6017 write_insn
<big_endian
>(p
, mtlr_11
);
6019 write_insn
<big_endian
>(p
, blr
);
6022 // Emit pc-relative plt call stub code.
6024 template<bool big_endian
>
6025 static unsigned char*
6026 build_power10_offset(unsigned char* p
, uint64_t off
, uint64_t odd
, bool load
)
6029 if (off
- odd
+ (1ULL << 33) < 1ULL << 34)
6034 write_insn
<big_endian
>(p
, nop
);
6042 write_insn
<big_endian
>(p
, insn
>> 32);
6044 write_insn
<big_endian
>(p
, insn
& 0xffffffff);
6046 else if (off
- (8 - odd
) + (0x20002ULL
<< 32) < 0x40004ULL
<< 32)
6049 write_insn
<big_endian
>(p
, li_11_0
| (ha34(off
) & 0xffff));
6053 write_insn
<big_endian
>(p
, sldi_11_11_34
);
6056 insn
= paddi_12_pc
| d34(off
);
6057 write_insn
<big_endian
>(p
, insn
>> 32);
6059 write_insn
<big_endian
>(p
, insn
& 0xffffffff);
6063 write_insn
<big_endian
>(p
, sldi_11_11_34
);
6067 write_insn
<big_endian
>(p
, ldx_12_11_12
);
6069 write_insn
<big_endian
>(p
, add_12_11_12
);
6074 write_insn
<big_endian
>(p
, lis_11
| ((ha34(off
) >> 16) & 0x3fff));
6076 write_insn
<big_endian
>(p
, ori_11_11_0
| (ha34(off
) & 0xffff));
6080 write_insn
<big_endian
>(p
, sldi_11_11_34
);
6083 insn
= paddi_12_pc
| d34(off
);
6084 write_insn
<big_endian
>(p
, insn
>> 32);
6086 write_insn
<big_endian
>(p
, insn
& 0xffffffff);
6090 write_insn
<big_endian
>(p
, sldi_11_11_34
);
6094 write_insn
<big_endian
>(p
, ldx_12_11_12
);
6096 write_insn
<big_endian
>(p
, add_12_11_12
);
6102 // Gets the address of a label (1:) in r11 and builds an offset in r12,
6103 // then adds it to r11 (LOAD false) or loads r12 from r11+r12 (LOAD true).
6108 // lis %r12,xxx-1b@highest
6109 // ori %r12,%r12,xxx-1b@higher
6110 // sldi %r12,%r12,32
6111 // oris %r12,%r12,xxx-1b@high
6112 // ori %r12,%r12,xxx-1b@l
6113 // add/ldx %r12,%r11,%r12
6115 template<bool big_endian
>
6116 static unsigned char*
6117 build_notoc_offset(unsigned char* p
, uint64_t off
, bool load
)
6119 write_insn
<big_endian
>(p
, mflr_12
);
6121 write_insn
<big_endian
>(p
, bcl_20_31
);
6123 write_insn
<big_endian
>(p
, mflr_11
);
6125 write_insn
<big_endian
>(p
, mtlr_12
);
6127 if (off
+ 0x8000 < 0x10000)
6130 write_insn
<big_endian
>(p
, ld_12_11
+ l(off
));
6132 write_insn
<big_endian
>(p
, addi_12_11
+ l(off
));
6134 else if (off
+ 0x80008000ULL
< 0x100000000ULL
)
6136 write_insn
<big_endian
>(p
, addis_12_11
+ ha(off
));
6139 write_insn
<big_endian
>(p
, ld_12_12
+ l(off
));
6141 write_insn
<big_endian
>(p
, addi_12_12
+ l(off
));
6145 if (off
+ 0x800000000000ULL
< 0x1000000000000ULL
)
6147 write_insn
<big_endian
>(p
, li_12_0
+ ((off
>> 32) & 0xffff));
6152 write_insn
<big_endian
>(p
, lis_12
+ ((off
>> 48) & 0xffff));
6154 if (((off
>> 32) & 0xffff) != 0)
6156 write_insn
<big_endian
>(p
, ori_12_12_0
+ ((off
>> 32) & 0xffff));
6160 if (((off
>> 32) & 0xffffffffULL
) != 0)
6162 write_insn
<big_endian
>(p
, sldi_12_12_32
);
6167 write_insn
<big_endian
>(p
, oris_12_12_0
+ hi(off
));
6172 write_insn
<big_endian
>(p
, ori_12_12_0
+ l(off
));
6176 write_insn
<big_endian
>(p
, ldx_12_11_12
);
6178 write_insn
<big_endian
>(p
, add_12_11_12
);
6184 // Size of a given plt call stub.
6186 template<int size
, bool big_endian
>
6188 Stub_table
<size
, big_endian
>::plt_call_size(
6189 typename
Plt_stub_entries::iterator p
) const
6193 unsigned int bytes
= 4 * 4;
6194 if (this->targ_
->is_tls_get_addr_opt(p
->first
.sym_
))
6196 return this->plt_call_align(bytes
);
6199 const Output_data_plt_powerpc
<size
, big_endian
>* plt
;
6200 uint64_t plt_addr
= this->plt_off(p
, &plt
);
6201 plt_addr
+= plt
->address();
6202 if (this->targ_
->power10_stubs()
6203 && this->targ_
->power10_stubs_auto())
6205 unsigned int bytes
= 0;
6206 if (p
->second
.notoc_
)
6208 if (this->targ_
->is_tls_get_addr_opt(p
->first
.sym_
))
6210 uint64_t from
= this->stub_address() + p
->second
.off_
+ bytes
;
6211 uint64_t odd
= from
& 4;
6212 uint64_t off
= plt_addr
- from
;
6213 if (off
- odd
+ (1ULL << 33) < 1ULL << 34)
6214 bytes
+= odd
+ 4 * 4;
6215 else if (off
- (8 - odd
) + (0x20002ULL
<< 32) < 0x40004ULL
<< 32)
6219 bytes
= this->plt_call_align(bytes
);
6223 p
->second
.tocoff_
= bytes
;
6224 if (this->targ_
->is_tls_get_addr_opt(p
->first
.sym_
))
6227 if (p
->second
.r2save_
&& !p
->second
.localentry0_
)
6228 bytes
+= 2 * 4 + 4 * 4;
6230 if (p
->second
.r2save_
)
6232 uint64_t got_addr
= this->targ_
->toc_pointer();
6233 uint64_t off
= plt_addr
- got_addr
;
6234 bytes
+= 3 * 4 + 4 * (ha(off
) != 0);
6235 p
->second
.tsize_
= bytes
- p
->second
.tocoff_
;
6236 bytes
= this->plt_call_align(bytes
);
6238 if (p
->second
.p9notoc_
)
6240 p
->second
.p9off_
= bytes
;
6241 if (this->targ_
->is_tls_get_addr_opt(p
->first
.sym_
))
6243 uint64_t from
= this->stub_address() + p
->second
.off_
+ bytes
+ 2 * 4;
6244 uint64_t off
= plt_addr
- from
;
6245 if (off
+ 0x8000 < 0x10000)
6247 else if (off
+ 0x80008000ULL
< 0x100000000ULL
)
6252 if (off
+ 0x800000000000ULL
>= 0x1000000000000ULL
6253 && ((off
>> 32) & 0xffff) != 0)
6255 if (((off
>> 32) & 0xffffffffULL
) != 0)
6262 bytes
= this->plt_call_align(bytes
);
6268 unsigned int bytes
= 0;
6269 unsigned int tail
= 0;
6270 if (this->targ_
->is_tls_get_addr_opt(p
->first
.sym_
))
6273 if (p
->second
.r2save_
&& !p
->second
.localentry0_
)
6280 if (p
->second
.r2save_
)
6283 if (this->targ_
->power10_stubs())
6285 uint64_t from
= this->stub_address() + p
->second
.off_
+ bytes
;
6286 uint64_t odd
= from
& 4;
6287 uint64_t off
= plt_addr
- from
;
6288 if (off
- odd
+ (1ULL << 33) < 1ULL << 34)
6289 bytes
+= odd
+ 4 * 4;
6290 else if (off
- (8 - odd
) + (0x20002ULL
<< 32) < 0x40004ULL
<< 32)
6294 return this->plt_call_align(bytes
+ tail
);
6297 if (p
->second
.p9notoc_
)
6299 uint64_t from
= this->stub_address() + p
->second
.off_
+ bytes
+ 2 * 4;
6300 uint64_t off
= plt_addr
- from
;
6301 if (off
+ 0x8000 < 0x10000)
6303 else if (off
+ 0x80008000ULL
< 0x100000000ULL
)
6308 if (off
+ 0x800000000000ULL
>= 0x1000000000000ULL
6309 && ((off
>> 32) & 0xffff) != 0)
6311 if (((off
>> 32) & 0xffffffffULL
) != 0)
6318 return this->plt_call_align(bytes
+ tail
);
6321 uint64_t got_addr
= this->targ_
->toc_pointer();
6322 uint64_t off
= plt_addr
- got_addr
;
6323 bytes
+= 3 * 4 + 4 * (ha(off
) != 0);
6324 if (this->targ_
->abiversion() < 2)
6326 bool static_chain
= parameters
->options().plt_static_chain();
6327 bool thread_safe
= this->targ_
->plt_thread_safe();
6331 + 4 * (ha(off
+ 8 + 8 * static_chain
) != ha(off
)));
6333 return this->plt_call_align(bytes
+ tail
);
6337 // Return long branch stub size.
6339 template<int size
, bool big_endian
>
6341 Stub_table
<size
, big_endian
>::branch_stub_size(
6342 typename
Branch_stub_entries::iterator p
,
6345 Address loc
= this->stub_address() + this->last_plt_size_
+ p
->second
.off_
;
6348 if (p
->first
.dest_
- loc
+ (1 << 25) < 2 << 25)
6350 if (parameters
->options().output_is_position_independent())
6355 uint64_t off
= p
->first
.dest_
- loc
;
6356 unsigned int bytes
= 0;
6357 if (p
->second
.notoc_
)
6359 if (this->targ_
->power10_stubs())
6361 Address odd
= loc
& 4;
6362 if (off
+ (1 << 25) < 2 << 25)
6364 else if (off
- odd
+ (1ULL << 33) < 1ULL << 34)
6366 else if (off
- (8 - odd
) + (0x20002ULL
<< 32) < 0x40004ULL
<< 32)
6370 if (!(p
->second
.toc_
&& this->targ_
->power10_stubs_auto()))
6372 p
->second
.tocoff_
= bytes
;
6377 if (off
+ 0x8000 < 0x10000)
6379 if (off
+ 0x80008000ULL
< 0x100000000ULL
)
6381 if (off
+ 24 + (1 << 25) < 2 << 25)
6387 if (off
+ 0x800000000000ULL
>= 0x1000000000000ULL
6388 && ((off
>> 32) & 0xffff) != 0)
6390 if (((off
>> 32) & 0xffffffffULL
) != 0)
6400 off
+= elfcpp::ppc64_decode_local_entry(p
->second
.other_
);
6401 if (off
+ (1 << 25) < 2 << 25)
6403 if (!this->targ_
->power10_stubs()
6404 || (p
->second
.toc_
&& this->targ_
->power10_stubs_auto()))
6409 template<int size
, bool big_endian
>
6411 Stub_table
<size
, big_endian
>::plt_error(const Plt_stub_key
& p
)
6414 gold_error(_("linkage table error against `%s'"),
6415 p
.sym_
->demangled_name().c_str());
6417 gold_error(_("linkage table error against `%s:[local %u]'"),
6418 p
.object_
->name().c_str(),
6422 // Write out plt and long branch stub code.
6424 template<int size
, bool big_endian
>
6426 Stub_table
<size
, big_endian
>::do_write(Output_file
* of
)
6428 if (this->plt_call_stubs_
.empty()
6429 && this->long_branch_stubs_
.empty())
6432 const section_size_type start_off
= this->offset();
6433 const section_size_type off
= this->stub_offset();
6434 const section_size_type oview_size
=
6435 convert_to_section_size_type(this->data_size() - (off
- start_off
));
6436 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
6440 && this->targ_
->power10_stubs())
6442 if (!this->plt_call_stubs_
.empty())
6444 // Write out plt call stubs.
6445 typename
Plt_stub_entries::const_iterator cs
;
6446 for (cs
= this->plt_call_stubs_
.begin();
6447 cs
!= this->plt_call_stubs_
.end();
6450 p
= oview
+ cs
->second
.off_
;
6451 const Output_data_plt_powerpc
<size
, big_endian
>* plt
;
6452 Address pltoff
= this->plt_off(cs
, &plt
);
6453 Address plt_addr
= pltoff
+ plt
->address();
6454 if (this->targ_
->power10_stubs_auto())
6456 if (cs
->second
.notoc_
)
6458 if (this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
6459 this->build_tls_opt_head(&p
, false);
6460 Address from
= this->stub_address() + (p
- oview
);
6461 Address delta
= plt_addr
- from
;
6462 p
= build_power10_offset
<big_endian
>(p
, delta
, from
& 4,
6464 write_insn
<big_endian
>(p
, mtctr_12
);
6466 write_insn
<big_endian
>(p
, bctr
);
6468 p
= oview
+ this->plt_call_align(p
- oview
);
6470 if (cs
->second
.toc_
)
6472 if (this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
6475 = cs
->second
.r2save_
&& !cs
->second
.localentry0_
;
6476 this->build_tls_opt_head(&p
, save_lr
);
6478 Address got_addr
= this->targ_
->toc_pointer();
6479 Address off
= plt_addr
- got_addr
;
6481 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
6482 this->plt_error(cs
->first
);
6484 if (cs
->second
.r2save_
)
6486 write_insn
<big_endian
>(p
, std_2_1
+ this->targ_
->stk_toc());
6491 write_insn
<big_endian
>(p
, addis_12_2
+ ha(off
));
6493 write_insn
<big_endian
>(p
, ld_12_12
+ l(off
));
6498 write_insn
<big_endian
>(p
, ld_12_2
+ l(off
));
6501 write_insn
<big_endian
>(p
, mtctr_12
);
6503 if (cs
->second
.r2save_
6504 && !cs
->second
.localentry0_
6505 && this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
6506 this->build_tls_opt_tail(p
);
6508 write_insn
<big_endian
>(p
, bctr
);
6510 if (cs
->second
.p9notoc_
)
6512 if (this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
6513 this->build_tls_opt_head(&p
, false);
6514 Address from
= this->stub_address() + (p
- oview
);
6515 Address delta
= plt_addr
- from
;
6516 p
= build_notoc_offset
<big_endian
>(p
, delta
, true);
6517 write_insn
<big_endian
>(p
, mtctr_12
);
6519 write_insn
<big_endian
>(p
, bctr
);
6521 p
= oview
+ this->plt_call_align(p
- oview
);
6526 if (this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
6529 = cs
->second
.r2save_
&& !cs
->second
.localentry0_
;
6530 this->build_tls_opt_head(&p
, save_lr
);
6532 if (cs
->second
.r2save_
)
6534 write_insn
<big_endian
>(p
, std_2_1
+ this->targ_
->stk_toc());
6537 Address from
= this->stub_address() + (p
- oview
);
6538 Address delta
= plt_addr
- from
;
6539 p
= build_power10_offset
<big_endian
>(p
, delta
, from
& 4, true);
6540 write_insn
<big_endian
>(p
, mtctr_12
);
6542 if (cs
->second
.r2save_
6543 && !cs
->second
.localentry0_
6544 && this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
6545 this->build_tls_opt_tail(p
);
6547 write_insn
<big_endian
>(p
, bctr
);
6552 // Write out long branch stubs.
6553 typename
Branch_stub_entries::const_iterator bs
;
6554 for (bs
= this->long_branch_stubs_
.begin();
6555 bs
!= this->long_branch_stubs_
.end();
6558 if (bs
->second
.save_res_
)
6560 Address off
= this->plt_size_
+ bs
->second
.off_
;
6562 Address loc
= this->stub_address() + off
;
6563 Address delta
= bs
->first
.dest_
- loc
;
6564 if (this->targ_
->power10_stubs_auto())
6566 if (bs
->second
.notoc_
)
6568 unsigned char* startp
= p
;
6569 p
= build_power10_offset
<big_endian
>(p
, delta
,
6571 delta
-= p
- startp
;
6573 if (delta
+ (1 << 25) < 2 << 25)
6574 write_insn
<big_endian
>(p
, b
| (delta
& 0x3fffffc));
6577 write_insn
<big_endian
>(p
, mtctr_12
);
6579 write_insn
<big_endian
>(p
, bctr
);
6582 delta
-= p
- startp
;
6584 if (bs
->second
.toc_
)
6586 delta
+= elfcpp::ppc64_decode_local_entry(bs
->second
.other_
);
6587 if (delta
+ (1 << 25) >= 2 << 25)
6590 = this->targ_
->find_branch_lookup_table(bs
->first
.dest_
);
6591 gold_assert(brlt_addr
!= invalid_address
);
6592 brlt_addr
+= this->targ_
->brlt_section()->address();
6593 Address got_addr
= this->targ_
->toc_pointer();
6594 Address brltoff
= brlt_addr
- got_addr
;
6595 if (ha(brltoff
) == 0)
6597 write_insn
<big_endian
>(p
, ld_12_2
+ l(brltoff
));
6602 write_insn
<big_endian
>(p
, addis_12_2
+ ha(brltoff
));
6604 write_insn
<big_endian
>(p
, ld_12_12
+ l(brltoff
));
6608 if (delta
+ (1 << 25) < 2 << 25)
6609 write_insn
<big_endian
>(p
, b
| (delta
& 0x3fffffc));
6612 write_insn
<big_endian
>(p
, mtctr_12
);
6614 write_insn
<big_endian
>(p
, bctr
);
6617 if (bs
->second
.p9notoc_
)
6619 unsigned char* startp
= p
;
6620 p
= build_notoc_offset
<big_endian
>(p
, delta
, false);
6621 delta
-= p
- startp
;
6623 if (delta
+ (1 << 25) < 2 << 25)
6624 write_insn
<big_endian
>(p
, b
| (delta
& 0x3fffffc));
6627 write_insn
<big_endian
>(p
, mtctr_12
);
6629 write_insn
<big_endian
>(p
, bctr
);
6632 delta
-= p
- startp
;
6637 if (!bs
->second
.notoc_
)
6638 delta
+= elfcpp::ppc64_decode_local_entry(bs
->second
.other_
);
6639 if (bs
->second
.notoc_
|| delta
+ (1 << 25) >= 2 << 25)
6641 unsigned char* startp
= p
;
6642 p
= build_power10_offset
<big_endian
>(p
, delta
,
6644 delta
-= p
- startp
;
6646 if (delta
+ (1 << 25) < 2 << 25)
6647 write_insn
<big_endian
>(p
, b
| (delta
& 0x3fffffc));
6650 write_insn
<big_endian
>(p
, mtctr_12
);
6652 write_insn
<big_endian
>(p
, bctr
);
6657 else if (size
== 64)
6660 if (!this->plt_call_stubs_
.empty()
6661 && this->targ_
->abiversion() >= 2)
6663 // Write out plt call stubs for ELFv2.
6664 typename
Plt_stub_entries::const_iterator cs
;
6665 for (cs
= this->plt_call_stubs_
.begin();
6666 cs
!= this->plt_call_stubs_
.end();
6669 const Output_data_plt_powerpc
<size
, big_endian
>* plt
;
6670 Address pltoff
= this->plt_off(cs
, &plt
);
6671 Address plt_addr
= pltoff
+ plt
->address();
6673 p
= oview
+ cs
->second
.off_
;
6674 if (this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
6676 bool save_lr
= cs
->second
.r2save_
&& !cs
->second
.localentry0_
;
6677 this->build_tls_opt_head(&p
, save_lr
);
6679 if (cs
->second
.r2save_
)
6681 write_insn
<big_endian
>(p
, std_2_1
+ this->targ_
->stk_toc());
6684 if (cs
->second
.p9notoc_
)
6686 Address from
= this->stub_address() + (p
- oview
) + 8;
6687 Address off
= plt_addr
- from
;
6688 p
= build_notoc_offset
<big_endian
>(p
, off
, true);
6692 Address got_addr
= this->targ_
->toc_pointer();
6693 Address off
= plt_addr
- got_addr
;
6695 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
6696 this->plt_error(cs
->first
);
6700 write_insn
<big_endian
>(p
, addis_12_2
+ ha(off
));
6702 write_insn
<big_endian
>(p
, ld_12_12
+ l(off
));
6707 write_insn
<big_endian
>(p
, ld_12_2
+ l(off
));
6711 write_insn
<big_endian
>(p
, mtctr_12
);
6713 if (cs
->second
.r2save_
6714 && !cs
->second
.localentry0_
6715 && this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
6716 this->build_tls_opt_tail(p
);
6718 write_insn
<big_endian
>(p
, bctr
);
6721 else if (!this->plt_call_stubs_
.empty())
6723 // Write out plt call stubs for ELFv1.
6724 typename
Plt_stub_entries::const_iterator cs
;
6725 for (cs
= this->plt_call_stubs_
.begin();
6726 cs
!= this->plt_call_stubs_
.end();
6729 const Output_data_plt_powerpc
<size
, big_endian
>* plt
;
6730 Address pltoff
= this->plt_off(cs
, &plt
);
6731 Address plt_addr
= pltoff
+ plt
->address();
6732 Address got_addr
= this->targ_
->toc_pointer();
6733 Address off
= plt_addr
- got_addr
;
6735 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0
6736 || cs
->second
.notoc_
)
6737 this->plt_error(cs
->first
);
6739 bool static_chain
= parameters
->options().plt_static_chain();
6740 bool thread_safe
= this->targ_
->plt_thread_safe();
6741 bool use_fake_dep
= false;
6742 Address cmp_branch_off
= 0;
6745 unsigned int pltindex
6746 = ((pltoff
- this->targ_
->first_plt_entry_offset())
6747 / this->targ_
->plt_entry_size());
6749 = (this->targ_
->glink_section()->pltresolve_size()
6751 if (pltindex
> 32768)
6752 glinkoff
+= (pltindex
- 32768) * 4;
6754 = this->targ_
->glink_section()->address() + glinkoff
;
6756 = (this->stub_address() + cs
->second
.off_
+ 20
6757 + 4 * cs
->second
.r2save_
6758 + 4 * (ha(off
) != 0)
6759 + 4 * (ha(off
+ 8 + 8 * static_chain
) != ha(off
))
6760 + 4 * static_chain
);
6761 cmp_branch_off
= to
- from
;
6762 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
6765 p
= oview
+ cs
->second
.off_
;
6766 if (this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
6768 bool save_lr
= cs
->second
.r2save_
&& !cs
->second
.localentry0_
;
6769 this->build_tls_opt_head(&p
, save_lr
);
6770 use_fake_dep
= thread_safe
;
6772 if (cs
->second
.r2save_
)
6774 write_insn
<big_endian
>(p
, std_2_1
+ this->targ_
->stk_toc());
6779 write_insn
<big_endian
>(p
, addis_11_2
+ ha(off
));
6781 write_insn
<big_endian
>(p
, ld_12_11
+ l(off
));
6783 if (ha(off
+ 8 + 8 * static_chain
) != ha(off
))
6785 write_insn
<big_endian
>(p
, addi_11_11
+ l(off
));
6789 write_insn
<big_endian
>(p
, mtctr_12
);
6793 write_insn
<big_endian
>(p
, xor_2_12_12
);
6795 write_insn
<big_endian
>(p
, add_11_11_2
);
6798 write_insn
<big_endian
>(p
, ld_2_11
+ l(off
+ 8));
6802 write_insn
<big_endian
>(p
, ld_11_11
+ l(off
+ 16));
6808 write_insn
<big_endian
>(p
, ld_12_2
+ l(off
));
6810 if (ha(off
+ 8 + 8 * static_chain
) != ha(off
))
6812 write_insn
<big_endian
>(p
, addi_2_2
+ l(off
));
6816 write_insn
<big_endian
>(p
, mtctr_12
);
6820 write_insn
<big_endian
>(p
, xor_11_12_12
);
6822 write_insn
<big_endian
>(p
, add_2_2_11
);
6827 write_insn
<big_endian
>(p
, ld_11_2
+ l(off
+ 16));
6830 write_insn
<big_endian
>(p
, ld_2_2
+ l(off
+ 8));
6833 if (cs
->second
.r2save_
6834 && !cs
->second
.localentry0_
6835 && this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
6836 this->build_tls_opt_tail(p
);
6837 else if (thread_safe
&& !use_fake_dep
)
6839 write_insn
<big_endian
>(p
, cmpldi_2_0
);
6841 write_insn
<big_endian
>(p
, bnectr_p4
);
6843 write_insn
<big_endian
>(p
, b
| (cmp_branch_off
& 0x3fffffc));
6846 write_insn
<big_endian
>(p
, bctr
);
6850 // Write out long branch stubs.
6851 typename
Branch_stub_entries::const_iterator bs
;
6852 for (bs
= this->long_branch_stubs_
.begin();
6853 bs
!= this->long_branch_stubs_
.end();
6856 if (bs
->second
.save_res_
)
6858 Address off
= this->plt_size_
+ bs
->second
.off_
;
6860 Address loc
= this->stub_address() + off
;
6861 Address delta
= bs
->first
.dest_
- loc
;
6862 if (!bs
->second
.p9notoc_
)
6863 delta
+= elfcpp::ppc64_decode_local_entry(bs
->second
.other_
);
6864 if (bs
->second
.p9notoc_
)
6866 unsigned char* startp
= p
;
6867 p
= build_notoc_offset
<big_endian
>(p
, off
, false);
6868 delta
-= p
- startp
;
6870 else if (delta
+ (1 << 25) >= 2 << 25)
6873 = this->targ_
->find_branch_lookup_table(bs
->first
.dest_
);
6874 gold_assert(brlt_addr
!= invalid_address
);
6875 brlt_addr
+= this->targ_
->brlt_section()->address();
6876 Address got_addr
= this->targ_
->toc_pointer();
6877 Address brltoff
= brlt_addr
- got_addr
;
6878 if (ha(brltoff
) == 0)
6880 write_insn
<big_endian
>(p
, ld_12_2
+ l(brltoff
));
6885 write_insn
<big_endian
>(p
, addis_12_2
+ ha(brltoff
));
6887 write_insn
<big_endian
>(p
, ld_12_12
+ l(brltoff
));
6891 if (delta
+ (1 << 25) < 2 << 25)
6892 write_insn
<big_endian
>(p
, b
| (delta
& 0x3fffffc));
6895 write_insn
<big_endian
>(p
, mtctr_12
);
6897 write_insn
<big_endian
>(p
, bctr
);
6903 if (!this->plt_call_stubs_
.empty())
6905 // The address of _GLOBAL_OFFSET_TABLE_.
6906 Address g_o_t
= invalid_address
;
6908 // Write out plt call stubs.
6909 typename
Plt_stub_entries::const_iterator cs
;
6910 for (cs
= this->plt_call_stubs_
.begin();
6911 cs
!= this->plt_call_stubs_
.end();
6914 const Output_data_plt_powerpc
<size
, big_endian
>* plt
;
6915 Address plt_addr
= this->plt_off(cs
, &plt
);
6916 plt_addr
+= plt
->address();
6918 p
= oview
+ cs
->second
.off_
;
6919 if (this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
6920 this->build_tls_opt_head(&p
, false);
6921 if (parameters
->options().output_is_position_independent())
6924 const Powerpc_relobj
<size
, big_endian
>* ppcobj
6925 = (static_cast<const Powerpc_relobj
<size
, big_endian
>*>
6926 (cs
->first
.object_
));
6927 if (ppcobj
!= NULL
&& cs
->first
.addend_
>= 32768)
6929 unsigned int got2
= ppcobj
->got2_shndx();
6930 got_addr
= ppcobj
->get_output_section_offset(got2
);
6931 gold_assert(got_addr
!= invalid_address
);
6932 got_addr
+= (ppcobj
->output_section(got2
)->address()
6933 + cs
->first
.addend_
);
6937 if (g_o_t
== invalid_address
)
6938 g_o_t
= this->targ_
->toc_pointer();
6942 Address off
= plt_addr
- got_addr
;
6944 write_insn
<big_endian
>(p
, lwz_11_30
+ l(off
));
6947 write_insn
<big_endian
>(p
, addis_11_30
+ ha(off
));
6949 write_insn
<big_endian
>(p
, lwz_11_11
+ l(off
));
6954 write_insn
<big_endian
>(p
, lis_11
+ ha(plt_addr
));
6956 write_insn
<big_endian
>(p
, lwz_11_11
+ l(plt_addr
));
6959 write_insn
<big_endian
>(p
, mtctr_11
);
6961 write_insn
<big_endian
>(p
, bctr
);
6965 // Write out long branch stubs.
6966 typename
Branch_stub_entries::const_iterator bs
;
6967 for (bs
= this->long_branch_stubs_
.begin();
6968 bs
!= this->long_branch_stubs_
.end();
6971 if (bs
->second
.save_res_
)
6973 Address off
= this->plt_size_
+ bs
->second
.off_
;
6975 Address loc
= this->stub_address() + off
;
6976 Address delta
= bs
->first
.dest_
- loc
;
6977 if (delta
+ (1 << 25) < 2 << 25)
6978 write_insn
<big_endian
>(p
, b
| (delta
& 0x3fffffc));
6979 else if (!parameters
->options().output_is_position_independent())
6981 write_insn
<big_endian
>(p
, lis_12
+ ha(bs
->first
.dest_
));
6983 write_insn
<big_endian
>(p
, addi_12_12
+ l(bs
->first
.dest_
));
6988 write_insn
<big_endian
>(p
, mflr_0
);
6990 write_insn
<big_endian
>(p
, bcl_20_31
);
6992 write_insn
<big_endian
>(p
, mflr_12
);
6994 write_insn
<big_endian
>(p
, addis_12_12
+ ha(delta
));
6996 write_insn
<big_endian
>(p
, addi_12_12
+ l(delta
));
6998 write_insn
<big_endian
>(p
, mtlr_0
);
7001 write_insn
<big_endian
>(p
, mtctr_12
);
7003 write_insn
<big_endian
>(p
, bctr
);
7006 if (this->need_save_res_
)
7008 p
= oview
+ this->plt_size_
+ this->branch_size_
;
7009 memcpy (p
, this->targ_
->savres_section()->contents(),
7010 this->targ_
->savres_section()->data_size());
7014 // Write out .glink.
7016 template<int size
, bool big_endian
>
7018 Output_data_glink
<size
, big_endian
>::do_write(Output_file
* of
)
7020 const section_size_type off
= this->offset();
7021 const section_size_type oview_size
=
7022 convert_to_section_size_type(this->data_size());
7023 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
7026 // The base address of the .plt section.
7027 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
7028 Address plt_base
= this->targ_
->plt_section()->address();
7032 if (this->end_branch_table_
!= 0)
7034 // Write pltresolve stub.
7036 Address after_bcl
= this->address() + 16;
7037 Address pltoff
= plt_base
- after_bcl
;
7039 elfcpp::Swap
<64, big_endian
>::writeval(p
, pltoff
), p
+= 8;
7041 if (this->targ_
->abiversion() < 2)
7043 write_insn
<big_endian
>(p
, mflr_12
), p
+= 4;
7044 write_insn
<big_endian
>(p
, bcl_20_31
), p
+= 4;
7045 write_insn
<big_endian
>(p
, mflr_11
), p
+= 4;
7046 write_insn
<big_endian
>(p
, ld_2_11
+ l(-16)), p
+= 4;
7047 write_insn
<big_endian
>(p
, mtlr_12
), p
+= 4;
7048 write_insn
<big_endian
>(p
, add_11_2_11
), p
+= 4;
7049 write_insn
<big_endian
>(p
, ld_12_11
+ 0), p
+= 4;
7050 write_insn
<big_endian
>(p
, ld_2_11
+ 8), p
+= 4;
7051 write_insn
<big_endian
>(p
, mtctr_12
), p
+= 4;
7052 write_insn
<big_endian
>(p
, ld_11_11
+ 16), p
+= 4;
7056 if (this->targ_
->has_localentry0())
7058 write_insn
<big_endian
>(p
, std_2_1
+ 24), p
+= 4;
7060 write_insn
<big_endian
>(p
, mflr_0
), p
+= 4;
7061 write_insn
<big_endian
>(p
, bcl_20_31
), p
+= 4;
7062 write_insn
<big_endian
>(p
, mflr_11
), p
+= 4;
7063 write_insn
<big_endian
>(p
, mtlr_0
), p
+= 4;
7064 if (this->targ_
->has_localentry0())
7066 write_insn
<big_endian
>(p
, ld_0_11
+ l(-20)), p
+= 4;
7070 write_insn
<big_endian
>(p
, ld_0_11
+ l(-16)), p
+= 4;
7072 write_insn
<big_endian
>(p
, sub_12_12_11
), p
+= 4;
7073 write_insn
<big_endian
>(p
, add_11_0_11
), p
+= 4;
7074 write_insn
<big_endian
>(p
, addi_0_12
+ l(-44)), p
+= 4;
7075 write_insn
<big_endian
>(p
, ld_12_11
+ 0), p
+= 4;
7076 write_insn
<big_endian
>(p
, srdi_0_0_2
), p
+= 4;
7077 write_insn
<big_endian
>(p
, mtctr_12
), p
+= 4;
7078 write_insn
<big_endian
>(p
, ld_11_11
+ 8), p
+= 4;
7080 write_insn
<big_endian
>(p
, bctr
), p
+= 4;
7081 gold_assert(p
== oview
+ this->pltresolve_size());
7083 // Write lazy link call stubs.
7085 while (p
< oview
+ this->end_branch_table_
)
7087 if (this->targ_
->abiversion() < 2)
7091 write_insn
<big_endian
>(p
, li_0_0
+ indx
), p
+= 4;
7095 write_insn
<big_endian
>(p
, lis_0
+ hi(indx
)), p
+= 4;
7096 write_insn
<big_endian
>(p
, ori_0_0_0
+ l(indx
)), p
+= 4;
7099 uint32_t branch_off
= 8 - (p
- oview
);
7100 write_insn
<big_endian
>(p
, b
+ (branch_off
& 0x3fffffc)), p
+= 4;
7105 Address plt_base
= this->targ_
->plt_section()->address();
7106 Address iplt_base
= invalid_address
;
7107 unsigned int global_entry_off
= this->global_entry_off();
7108 Address global_entry_base
= this->address() + global_entry_off
;
7109 typename
Global_entry_stub_entries::const_iterator ge
;
7110 for (ge
= this->global_entry_stubs_
.begin();
7111 ge
!= this->global_entry_stubs_
.end();
7114 p
= oview
+ global_entry_off
+ ge
->second
;
7115 Address plt_addr
= ge
->first
->plt_offset();
7116 if (ge
->first
->type() == elfcpp::STT_GNU_IFUNC
7117 && ge
->first
->can_use_relative_reloc(false))
7119 if (iplt_base
== invalid_address
)
7120 iplt_base
= this->targ_
->iplt_section()->address();
7121 plt_addr
+= iplt_base
;
7124 plt_addr
+= plt_base
;
7125 Address my_addr
= global_entry_base
+ ge
->second
;
7126 Address off
= plt_addr
- my_addr
;
7128 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
7129 gold_error(_("linkage table error against `%s'"),
7130 ge
->first
->demangled_name().c_str());
7132 write_insn
<big_endian
>(p
, addis_12_12
+ ha(off
)), p
+= 4;
7133 write_insn
<big_endian
>(p
, ld_12_12
+ l(off
)), p
+= 4;
7134 write_insn
<big_endian
>(p
, mtctr_12
), p
+= 4;
7135 write_insn
<big_endian
>(p
, bctr
);
7140 // The address of _GLOBAL_OFFSET_TABLE_.
7141 Address g_o_t
= this->targ_
->toc_pointer();
7143 // Write out pltresolve branch table.
7145 unsigned int the_end
= oview_size
- this->pltresolve_size();
7146 unsigned char* end_p
= oview
+ the_end
;
7147 while (p
< end_p
- 8 * 4)
7148 write_insn
<big_endian
>(p
, b
+ end_p
- p
), p
+= 4;
7150 write_insn
<big_endian
>(p
, nop
), p
+= 4;
7152 // Write out pltresolve call stub.
7153 end_p
= oview
+ oview_size
;
7154 if (parameters
->options().output_is_position_independent())
7156 Address res0_off
= 0;
7157 Address after_bcl_off
= the_end
+ 12;
7158 Address bcl_res0
= after_bcl_off
- res0_off
;
7160 write_insn
<big_endian
>(p
, addis_11_11
+ ha(bcl_res0
));
7162 write_insn
<big_endian
>(p
, mflr_0
);
7164 write_insn
<big_endian
>(p
, bcl_20_31
);
7166 write_insn
<big_endian
>(p
, addi_11_11
+ l(bcl_res0
));
7168 write_insn
<big_endian
>(p
, mflr_12
);
7170 write_insn
<big_endian
>(p
, mtlr_0
);
7172 write_insn
<big_endian
>(p
, sub_11_11_12
);
7175 Address got_bcl
= g_o_t
+ 4 - (after_bcl_off
+ this->address());
7177 write_insn
<big_endian
>(p
, addis_12_12
+ ha(got_bcl
));
7179 if (ha(got_bcl
) == ha(got_bcl
+ 4))
7181 write_insn
<big_endian
>(p
, lwz_0_12
+ l(got_bcl
));
7183 write_insn
<big_endian
>(p
, lwz_12_12
+ l(got_bcl
+ 4));
7187 write_insn
<big_endian
>(p
, lwzu_0_12
+ l(got_bcl
));
7189 write_insn
<big_endian
>(p
, lwz_12_12
+ 4);
7192 write_insn
<big_endian
>(p
, mtctr_0
);
7194 write_insn
<big_endian
>(p
, add_0_11_11
);
7196 write_insn
<big_endian
>(p
, add_11_0_11
);
7200 Address res0
= this->address();
7202 write_insn
<big_endian
>(p
, lis_12
+ ha(g_o_t
+ 4));
7204 write_insn
<big_endian
>(p
, addis_11_11
+ ha(-res0
));
7206 if (ha(g_o_t
+ 4) == ha(g_o_t
+ 8))
7207 write_insn
<big_endian
>(p
, lwz_0_12
+ l(g_o_t
+ 4));
7209 write_insn
<big_endian
>(p
, lwzu_0_12
+ l(g_o_t
+ 4));
7211 write_insn
<big_endian
>(p
, addi_11_11
+ l(-res0
));
7213 write_insn
<big_endian
>(p
, mtctr_0
);
7215 write_insn
<big_endian
>(p
, add_0_11_11
);
7217 if (ha(g_o_t
+ 4) == ha(g_o_t
+ 8))
7218 write_insn
<big_endian
>(p
, lwz_12_12
+ l(g_o_t
+ 8));
7220 write_insn
<big_endian
>(p
, lwz_12_12
+ 4);
7222 write_insn
<big_endian
>(p
, add_11_0_11
);
7225 write_insn
<big_endian
>(p
, bctr
);
7229 write_insn
<big_endian
>(p
, nop
);
7234 of
->write_output_view(off
, oview_size
, oview
);
7238 // A class to handle linker generated save/restore functions.
7240 template<int size
, bool big_endian
>
7241 class Output_data_save_res
: public Output_section_data_build
7244 Output_data_save_res(Symbol_table
* symtab
);
7246 const unsigned char*
7253 // Write to a map file.
7255 do_print_to_mapfile(Mapfile
* mapfile
) const
7256 { mapfile
->print_output_data(this, _("** save/restore")); }
7259 do_write(Output_file
*);
7262 // The maximum size of save/restore contents.
7263 static const unsigned int savres_max
= 218*4;
7266 savres_define(Symbol_table
* symtab
,
7268 unsigned int lo
, unsigned int hi
,
7269 unsigned char* write_ent(unsigned char*, int),
7270 unsigned char* write_tail(unsigned char*, int));
7272 unsigned char *contents_
;
7275 template<bool big_endian
>
7276 static unsigned char*
7277 savegpr0(unsigned char* p
, int r
)
7279 uint32_t insn
= std_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
7280 write_insn
<big_endian
>(p
, insn
);
7284 template<bool big_endian
>
7285 static unsigned char*
7286 savegpr0_tail(unsigned char* p
, int r
)
7288 p
= savegpr0
<big_endian
>(p
, r
);
7289 uint32_t insn
= std_0_1
+ 16;
7290 write_insn
<big_endian
>(p
, insn
);
7292 write_insn
<big_endian
>(p
, blr
);
7296 template<bool big_endian
>
7297 static unsigned char*
7298 restgpr0(unsigned char* p
, int r
)
7300 uint32_t insn
= ld_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
7301 write_insn
<big_endian
>(p
, insn
);
7305 template<bool big_endian
>
7306 static unsigned char*
7307 restgpr0_tail(unsigned char* p
, int r
)
7309 uint32_t insn
= ld_0_1
+ 16;
7310 write_insn
<big_endian
>(p
, insn
);
7312 p
= restgpr0
<big_endian
>(p
, r
);
7313 write_insn
<big_endian
>(p
, mtlr_0
);
7317 p
= restgpr0
<big_endian
>(p
, 30);
7318 p
= restgpr0
<big_endian
>(p
, 31);
7320 write_insn
<big_endian
>(p
, blr
);
7324 template<bool big_endian
>
7325 static unsigned char*
7326 savegpr1(unsigned char* p
, int r
)
7328 uint32_t insn
= std_0_12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
7329 write_insn
<big_endian
>(p
, insn
);
7333 template<bool big_endian
>
7334 static unsigned char*
7335 savegpr1_tail(unsigned char* p
, int r
)
7337 p
= savegpr1
<big_endian
>(p
, r
);
7338 write_insn
<big_endian
>(p
, blr
);
7342 template<bool big_endian
>
7343 static unsigned char*
7344 restgpr1(unsigned char* p
, int r
)
7346 uint32_t insn
= ld_0_12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
7347 write_insn
<big_endian
>(p
, insn
);
7351 template<bool big_endian
>
7352 static unsigned char*
7353 restgpr1_tail(unsigned char* p
, int r
)
7355 p
= restgpr1
<big_endian
>(p
, r
);
7356 write_insn
<big_endian
>(p
, blr
);
7360 template<bool big_endian
>
7361 static unsigned char*
7362 savefpr(unsigned char* p
, int r
)
7364 uint32_t insn
= stfd_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
7365 write_insn
<big_endian
>(p
, insn
);
7369 template<bool big_endian
>
7370 static unsigned char*
7371 savefpr0_tail(unsigned char* p
, int r
)
7373 p
= savefpr
<big_endian
>(p
, r
);
7374 write_insn
<big_endian
>(p
, std_0_1
+ 16);
7376 write_insn
<big_endian
>(p
, blr
);
7380 template<bool big_endian
>
7381 static unsigned char*
7382 restfpr(unsigned char* p
, int r
)
7384 uint32_t insn
= lfd_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
7385 write_insn
<big_endian
>(p
, insn
);
7389 template<bool big_endian
>
7390 static unsigned char*
7391 restfpr0_tail(unsigned char* p
, int r
)
7393 write_insn
<big_endian
>(p
, ld_0_1
+ 16);
7395 p
= restfpr
<big_endian
>(p
, r
);
7396 write_insn
<big_endian
>(p
, mtlr_0
);
7400 p
= restfpr
<big_endian
>(p
, 30);
7401 p
= restfpr
<big_endian
>(p
, 31);
7403 write_insn
<big_endian
>(p
, blr
);
7407 template<bool big_endian
>
7408 static unsigned char*
7409 savefpr1_tail(unsigned char* p
, int r
)
7411 p
= savefpr
<big_endian
>(p
, r
);
7412 write_insn
<big_endian
>(p
, blr
);
7416 template<bool big_endian
>
7417 static unsigned char*
7418 restfpr1_tail(unsigned char* p
, int r
)
7420 p
= restfpr
<big_endian
>(p
, r
);
7421 write_insn
<big_endian
>(p
, blr
);
7425 template<bool big_endian
>
7426 static unsigned char*
7427 savevr(unsigned char* p
, int r
)
7429 uint32_t insn
= li_12_0
+ (1 << 16) - (32 - r
) * 16;
7430 write_insn
<big_endian
>(p
, insn
);
7432 insn
= stvx_0_12_0
+ (r
<< 21);
7433 write_insn
<big_endian
>(p
, insn
);
7437 template<bool big_endian
>
7438 static unsigned char*
7439 savevr_tail(unsigned char* p
, int r
)
7441 p
= savevr
<big_endian
>(p
, r
);
7442 write_insn
<big_endian
>(p
, blr
);
7446 template<bool big_endian
>
7447 static unsigned char*
7448 restvr(unsigned char* p
, int r
)
7450 uint32_t insn
= li_12_0
+ (1 << 16) - (32 - r
) * 16;
7451 write_insn
<big_endian
>(p
, insn
);
7453 insn
= lvx_0_12_0
+ (r
<< 21);
7454 write_insn
<big_endian
>(p
, insn
);
7458 template<bool big_endian
>
7459 static unsigned char*
7460 restvr_tail(unsigned char* p
, int r
)
7462 p
= restvr
<big_endian
>(p
, r
);
7463 write_insn
<big_endian
>(p
, blr
);
7468 template<int size
, bool big_endian
>
7469 Output_data_save_res
<size
, big_endian
>::Output_data_save_res(
7470 Symbol_table
* symtab
)
7471 : Output_section_data_build(4),
7474 this->savres_define(symtab
,
7475 "_savegpr0_", 14, 31,
7476 savegpr0
<big_endian
>, savegpr0_tail
<big_endian
>);
7477 this->savres_define(symtab
,
7478 "_restgpr0_", 14, 29,
7479 restgpr0
<big_endian
>, restgpr0_tail
<big_endian
>);
7480 this->savres_define(symtab
,
7481 "_restgpr0_", 30, 31,
7482 restgpr0
<big_endian
>, restgpr0_tail
<big_endian
>);
7483 this->savres_define(symtab
,
7484 "_savegpr1_", 14, 31,
7485 savegpr1
<big_endian
>, savegpr1_tail
<big_endian
>);
7486 this->savres_define(symtab
,
7487 "_restgpr1_", 14, 31,
7488 restgpr1
<big_endian
>, restgpr1_tail
<big_endian
>);
7489 this->savres_define(symtab
,
7490 "_savefpr_", 14, 31,
7491 savefpr
<big_endian
>, savefpr0_tail
<big_endian
>);
7492 this->savres_define(symtab
,
7493 "_restfpr_", 14, 29,
7494 restfpr
<big_endian
>, restfpr0_tail
<big_endian
>);
7495 this->savres_define(symtab
,
7496 "_restfpr_", 30, 31,
7497 restfpr
<big_endian
>, restfpr0_tail
<big_endian
>);
7498 this->savres_define(symtab
,
7500 savefpr
<big_endian
>, savefpr1_tail
<big_endian
>);
7501 this->savres_define(symtab
,
7503 restfpr
<big_endian
>, restfpr1_tail
<big_endian
>);
7504 this->savres_define(symtab
,
7506 savevr
<big_endian
>, savevr_tail
<big_endian
>);
7507 this->savres_define(symtab
,
7509 restvr
<big_endian
>, restvr_tail
<big_endian
>);
7512 template<int size
, bool big_endian
>
7514 Output_data_save_res
<size
, big_endian
>::savres_define(
7515 Symbol_table
* symtab
,
7517 unsigned int lo
, unsigned int hi
,
7518 unsigned char* write_ent(unsigned char*, int),
7519 unsigned char* write_tail(unsigned char*, int))
7521 size_t len
= strlen(name
);
7522 bool writing
= false;
7525 memcpy(sym
, name
, len
);
7528 for (unsigned int i
= lo
; i
<= hi
; i
++)
7530 sym
[len
+ 0] = i
/ 10 + '0';
7531 sym
[len
+ 1] = i
% 10 + '0';
7532 Symbol
* gsym
= symtab
->lookup(sym
);
7533 bool refd
= gsym
!= NULL
&& gsym
->is_undefined();
7534 writing
= writing
|| refd
;
7537 if (this->contents_
== NULL
)
7538 this->contents_
= new unsigned char[this->savres_max
];
7540 section_size_type value
= this->current_data_size();
7541 unsigned char* p
= this->contents_
+ value
;
7543 p
= write_ent(p
, i
);
7545 p
= write_tail(p
, i
);
7546 section_size_type cur_size
= p
- this->contents_
;
7547 this->set_current_data_size(cur_size
);
7549 symtab
->define_in_output_data(sym
, NULL
, Symbol_table::PREDEFINED
,
7550 this, value
, cur_size
- value
,
7551 elfcpp::STT_FUNC
, elfcpp::STB_GLOBAL
,
7552 elfcpp::STV_HIDDEN
, 0, false, false);
7557 // Write out save/restore.
7559 template<int size
, bool big_endian
>
7561 Output_data_save_res
<size
, big_endian
>::do_write(Output_file
* of
)
7563 const section_size_type off
= this->offset();
7564 const section_size_type oview_size
=
7565 convert_to_section_size_type(this->data_size());
7566 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
7567 memcpy(oview
, this->contents_
, oview_size
);
7568 of
->write_output_view(off
, oview_size
, oview
);
7572 // Create the glink section.
7574 template<int size
, bool big_endian
>
7576 Target_powerpc
<size
, big_endian
>::make_glink_section(Layout
* layout
)
7578 if (this->glink_
== NULL
)
7580 this->glink_
= new Output_data_glink
<size
, big_endian
>(this);
7581 this->glink_
->add_eh_frame(layout
);
7582 layout
->add_output_section_data(".text", elfcpp::SHT_PROGBITS
,
7583 elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
,
7584 this->glink_
, ORDER_TEXT
, false);
7588 // Create a PLT entry for a global symbol.
7590 template<int size
, bool big_endian
>
7592 Target_powerpc
<size
, big_endian
>::make_plt_entry(Symbol_table
* symtab
,
7596 if (gsym
->type() == elfcpp::STT_GNU_IFUNC
7597 && gsym
->can_use_relative_reloc(false))
7599 if (this->iplt_
== NULL
)
7600 this->make_iplt_section(symtab
, layout
);
7601 this->iplt_
->add_ifunc_entry(gsym
);
7605 if (this->plt_
== NULL
)
7606 this->make_plt_section(symtab
, layout
);
7607 this->plt_
->add_entry(gsym
);
7611 // Make a PLT entry for a local symbol.
7613 template<int size
, bool big_endian
>
7615 Target_powerpc
<size
, big_endian
>::make_local_plt_entry(
7616 Symbol_table
* symtab
,
7618 Sized_relobj_file
<size
, big_endian
>* relobj
,
7621 if (this->lplt_
== NULL
)
7622 this->make_lplt_section(symtab
, layout
);
7623 this->lplt_
->add_local_entry(relobj
, r_sym
);
7626 template<int size
, bool big_endian
>
7628 Target_powerpc
<size
, big_endian
>::make_local_plt_entry(Symbol_table
* symtab
,
7632 if (this->lplt_
== NULL
)
7633 this->make_lplt_section(symtab
, layout
);
7634 this->lplt_
->add_entry(gsym
, true);
7637 // Make a PLT entry for a local STT_GNU_IFUNC symbol.
7639 template<int size
, bool big_endian
>
7641 Target_powerpc
<size
, big_endian
>::make_local_ifunc_plt_entry(
7642 Symbol_table
* symtab
,
7644 Sized_relobj_file
<size
, big_endian
>* relobj
,
7647 if (this->iplt_
== NULL
)
7648 this->make_iplt_section(symtab
, layout
);
7649 this->iplt_
->add_local_ifunc_entry(relobj
, r_sym
);
7652 // Return the number of entries in the PLT.
7654 template<int size
, bool big_endian
>
7656 Target_powerpc
<size
, big_endian
>::plt_entry_count() const
7658 if (this->plt_
== NULL
)
7660 return this->plt_
->entry_count();
7663 // Create a GOT entry for local dynamic __tls_get_addr calls.
7665 template<int size
, bool big_endian
>
7667 Target_powerpc
<size
, big_endian
>::tlsld_got_offset(
7668 Symbol_table
* symtab
,
7670 Sized_relobj_file
<size
, big_endian
>* object
)
7672 if (this->tlsld_got_offset_
== -1U)
7674 gold_assert(symtab
!= NULL
&& layout
!= NULL
&& object
!= NULL
);
7675 Reloc_section
* rela_dyn
= this->rela_dyn_section(layout
);
7676 Output_data_got_powerpc
<size
, big_endian
>* got
7677 = this->got_section(symtab
, layout
, GOT_TYPE_SMALL
);
7678 unsigned int got_offset
= got
->add_constant_pair(0, 0);
7679 rela_dyn
->add_local(object
, 0, elfcpp::R_POWERPC_DTPMOD
, got
,
7681 this->tlsld_got_offset_
= got_offset
;
7683 return this->tlsld_got_offset_
;
7686 // Get the Reference_flags for a particular relocation.
7688 template<int size
, bool big_endian
>
7690 Target_powerpc
<size
, big_endian
>::Scan::get_reference_flags(
7691 unsigned int r_type
,
7692 const Target_powerpc
* target
)
7698 case elfcpp::R_PPC64_TOC
:
7702 case elfcpp::R_POWERPC_NONE
:
7703 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
7704 case elfcpp::R_POWERPC_GNU_VTENTRY
:
7705 // No symbol reference.
7708 case elfcpp::R_PPC64_ADDR64
:
7709 case elfcpp::R_PPC64_UADDR64
:
7710 case elfcpp::R_PPC64_ADDR16_HIGHER34
:
7711 case elfcpp::R_PPC64_ADDR16_HIGHERA34
:
7712 case elfcpp::R_PPC64_ADDR16_HIGHEST34
:
7713 case elfcpp::R_PPC64_ADDR16_HIGHESTA34
:
7714 case elfcpp::R_PPC64_D34
:
7715 case elfcpp::R_PPC64_D34_LO
:
7716 case elfcpp::R_PPC64_D34_HI30
:
7717 case elfcpp::R_PPC64_D34_HA30
:
7718 case elfcpp::R_PPC64_D28
:
7722 case elfcpp::R_POWERPC_ADDR32
:
7723 case elfcpp::R_POWERPC_UADDR32
:
7724 case elfcpp::R_POWERPC_ADDR16
:
7725 case elfcpp::R_POWERPC_UADDR16
:
7726 case elfcpp::R_POWERPC_ADDR16_LO
:
7727 case elfcpp::R_POWERPC_ADDR16_HI
:
7728 case elfcpp::R_POWERPC_ADDR16_HA
:
7729 ref
= Symbol::ABSOLUTE_REF
;
7732 case elfcpp::R_POWERPC_ADDR24
:
7733 case elfcpp::R_POWERPC_ADDR14
:
7734 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
7735 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
7736 ref
= Symbol::FUNCTION_CALL
| Symbol::ABSOLUTE_REF
;
7739 case elfcpp::R_PPC_LOCAL24PC
:
7743 ref
= Symbol::RELATIVE_REF
;
7746 case elfcpp::R_PPC64_REL64
:
7747 case elfcpp::R_PPC64_REL16_HIGH
:
7748 case elfcpp::R_PPC64_REL16_HIGHA
:
7749 case elfcpp::R_PPC64_REL16_HIGHER
:
7750 case elfcpp::R_PPC64_REL16_HIGHERA
:
7751 case elfcpp::R_PPC64_REL16_HIGHEST
:
7752 case elfcpp::R_PPC64_REL16_HIGHESTA
:
7753 case elfcpp::R_PPC64_PCREL34
:
7754 case elfcpp::R_PPC64_REL16_HIGHER34
:
7755 case elfcpp::R_PPC64_REL16_HIGHERA34
:
7756 case elfcpp::R_PPC64_REL16_HIGHEST34
:
7757 case elfcpp::R_PPC64_REL16_HIGHESTA34
:
7758 case elfcpp::R_PPC64_PCREL28
:
7762 case elfcpp::R_POWERPC_REL32
:
7763 case elfcpp::R_POWERPC_REL16
:
7764 case elfcpp::R_POWERPC_REL16_LO
:
7765 case elfcpp::R_POWERPC_REL16_HI
:
7766 case elfcpp::R_POWERPC_REL16_HA
:
7767 ref
= Symbol::RELATIVE_REF
;
7770 case elfcpp::R_PPC_PLTREL24
:
7773 ref
= Symbol::FUNCTION_CALL
| Symbol::RELATIVE_REF
;
7776 case elfcpp::R_PPC64_REL24_NOTOC
:
7777 case elfcpp::R_PPC64_REL24_P9NOTOC
:
7778 case elfcpp::R_PPC64_PLT16_LO_DS
:
7779 case elfcpp::R_PPC64_PLTSEQ_NOTOC
:
7780 case elfcpp::R_PPC64_PLTCALL_NOTOC
:
7781 case elfcpp::R_PPC64_PLT_PCREL34
:
7782 case elfcpp::R_PPC64_PLT_PCREL34_NOTOC
:
7786 case elfcpp::R_POWERPC_REL24
:
7787 case elfcpp::R_POWERPC_REL14
:
7788 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
7789 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
7790 case elfcpp::R_POWERPC_PLT16_LO
:
7791 case elfcpp::R_POWERPC_PLT16_HI
:
7792 case elfcpp::R_POWERPC_PLT16_HA
:
7793 case elfcpp::R_POWERPC_PLTSEQ
:
7794 case elfcpp::R_POWERPC_PLTCALL
:
7795 ref
= Symbol::FUNCTION_CALL
| Symbol::RELATIVE_REF
;
7798 case elfcpp::R_PPC64_GOT16_DS
:
7799 case elfcpp::R_PPC64_GOT16_LO_DS
:
7800 case elfcpp::R_PPC64_GOT_PCREL34
:
7801 case elfcpp::R_PPC64_TOC16
:
7802 case elfcpp::R_PPC64_TOC16_LO
:
7803 case elfcpp::R_PPC64_TOC16_HI
:
7804 case elfcpp::R_PPC64_TOC16_HA
:
7805 case elfcpp::R_PPC64_TOC16_DS
:
7806 case elfcpp::R_PPC64_TOC16_LO_DS
:
7810 case elfcpp::R_POWERPC_GOT16
:
7811 case elfcpp::R_POWERPC_GOT16_LO
:
7812 case elfcpp::R_POWERPC_GOT16_HI
:
7813 case elfcpp::R_POWERPC_GOT16_HA
:
7814 ref
= Symbol::RELATIVE_REF
;
7817 case elfcpp::R_PPC64_TLSGD
:
7818 case elfcpp::R_PPC64_TLSLD
:
7819 case elfcpp::R_PPC64_TPREL34
:
7820 case elfcpp::R_PPC64_DTPREL34
:
7821 case elfcpp::R_PPC64_GOT_TLSGD_PCREL34
:
7822 case elfcpp::R_PPC64_GOT_TLSLD_PCREL34
:
7823 case elfcpp::R_PPC64_GOT_TPREL_PCREL34
:
7824 case elfcpp::R_PPC64_GOT_DTPREL_PCREL34
:
7828 case elfcpp::R_POWERPC_GOT_TPREL16
:
7829 case elfcpp::R_POWERPC_TLS
:
7830 ref
= Symbol::TLS_REF
;
7833 case elfcpp::R_POWERPC_COPY
:
7834 case elfcpp::R_POWERPC_GLOB_DAT
:
7835 case elfcpp::R_POWERPC_JMP_SLOT
:
7836 case elfcpp::R_POWERPC_RELATIVE
:
7837 case elfcpp::R_POWERPC_DTPMOD
:
7839 // Not expected. We will give an error later.
7843 if (size
== 64 && target
->abiversion() < 2)
7844 ref
|= Symbol::FUNC_DESC_ABI
;
7848 // Report an unsupported relocation against a local symbol.
7850 template<int size
, bool big_endian
>
7852 Target_powerpc
<size
, big_endian
>::Scan::unsupported_reloc_local(
7853 Sized_relobj_file
<size
, big_endian
>* object
,
7854 unsigned int r_type
)
7856 gold_error(_("%s: unsupported reloc %u against local symbol"),
7857 object
->name().c_str(), r_type
);
7860 // We are about to emit a dynamic relocation of type R_TYPE. If the
7861 // dynamic linker does not support it, issue an error.
7863 template<int size
, bool big_endian
>
7865 Target_powerpc
<size
, big_endian
>::Scan::check_non_pic(Relobj
* object
,
7866 unsigned int r_type
)
7868 gold_assert(r_type
!= elfcpp::R_POWERPC_NONE
);
7870 // These are the relocation types supported by glibc for both 32-bit
7871 // and 64-bit powerpc.
7874 case elfcpp::R_POWERPC_NONE
:
7875 case elfcpp::R_POWERPC_RELATIVE
:
7876 case elfcpp::R_POWERPC_GLOB_DAT
:
7877 case elfcpp::R_POWERPC_DTPMOD
:
7878 case elfcpp::R_POWERPC_DTPREL
:
7879 case elfcpp::R_POWERPC_TPREL
:
7880 case elfcpp::R_POWERPC_JMP_SLOT
:
7881 case elfcpp::R_POWERPC_COPY
:
7882 case elfcpp::R_POWERPC_IRELATIVE
:
7883 case elfcpp::R_POWERPC_ADDR32
:
7884 case elfcpp::R_POWERPC_UADDR32
:
7885 case elfcpp::R_POWERPC_ADDR24
:
7886 case elfcpp::R_POWERPC_ADDR16
:
7887 case elfcpp::R_POWERPC_UADDR16
:
7888 case elfcpp::R_POWERPC_ADDR16_LO
:
7889 case elfcpp::R_POWERPC_ADDR16_HI
:
7890 case elfcpp::R_POWERPC_ADDR16_HA
:
7891 case elfcpp::R_POWERPC_ADDR14
:
7892 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
7893 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
7894 case elfcpp::R_POWERPC_REL32
:
7895 case elfcpp::R_POWERPC_TPREL16
:
7896 case elfcpp::R_POWERPC_TPREL16_LO
:
7897 case elfcpp::R_POWERPC_TPREL16_HI
:
7898 case elfcpp::R_POWERPC_TPREL16_HA
:
7909 // These are the relocation types supported only on 64-bit.
7910 case elfcpp::R_PPC64_ADDR64
:
7911 case elfcpp::R_PPC64_UADDR64
:
7912 case elfcpp::R_PPC64_JMP_IREL
:
7913 case elfcpp::R_PPC64_ADDR16_DS
:
7914 case elfcpp::R_PPC64_ADDR16_LO_DS
:
7915 case elfcpp::R_PPC64_ADDR16_HIGH
:
7916 case elfcpp::R_PPC64_ADDR16_HIGHA
:
7917 case elfcpp::R_PPC64_ADDR16_HIGHER
:
7918 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
7919 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
7920 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
7921 case elfcpp::R_PPC64_REL64
:
7922 case elfcpp::R_POWERPC_ADDR30
:
7923 case elfcpp::R_PPC64_TPREL16_DS
:
7924 case elfcpp::R_PPC64_TPREL16_LO_DS
:
7925 case elfcpp::R_PPC64_TPREL16_HIGH
:
7926 case elfcpp::R_PPC64_TPREL16_HIGHA
:
7927 case elfcpp::R_PPC64_TPREL16_HIGHER
:
7928 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
7929 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
7930 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
7941 // These are the relocation types supported only on 32-bit.
7942 // ??? glibc ld.so doesn't need to support these.
7943 case elfcpp::R_POWERPC_REL24
:
7944 case elfcpp::R_POWERPC_DTPREL16
:
7945 case elfcpp::R_POWERPC_DTPREL16_LO
:
7946 case elfcpp::R_POWERPC_DTPREL16_HI
:
7947 case elfcpp::R_POWERPC_DTPREL16_HA
:
7955 // This prevents us from issuing more than one error per reloc
7956 // section. But we can still wind up issuing more than one
7957 // error per object file.
7958 if (this->issued_non_pic_error_
)
7960 gold_assert(parameters
->options().output_is_position_independent());
7961 object
->error(_("requires unsupported dynamic reloc; "
7962 "recompile with -fPIC"));
7963 this->issued_non_pic_error_
= true;
7967 // Return whether we need to make a PLT entry for a relocation of the
7968 // given type against a STT_GNU_IFUNC symbol.
7970 template<int size
, bool big_endian
>
7972 Target_powerpc
<size
, big_endian
>::Scan::reloc_needs_plt_for_ifunc(
7973 Target_powerpc
<size
, big_endian
>* target
,
7974 Sized_relobj_file
<size
, big_endian
>* object
,
7975 unsigned int r_type
,
7978 // In non-pic code any reference will resolve to the plt call stub
7979 // for the ifunc symbol.
7980 if ((size
== 32 || target
->abiversion() >= 2)
7981 && !parameters
->options().output_is_position_independent())
7986 // Word size refs from data sections are OK, but don't need a PLT entry.
7987 case elfcpp::R_POWERPC_ADDR32
:
7988 case elfcpp::R_POWERPC_UADDR32
:
7993 case elfcpp::R_PPC64_ADDR64
:
7994 case elfcpp::R_PPC64_UADDR64
:
7999 // GOT refs are good, but also don't need a PLT entry.
8000 case elfcpp::R_POWERPC_GOT16
:
8001 case elfcpp::R_POWERPC_GOT16_LO
:
8002 case elfcpp::R_POWERPC_GOT16_HI
:
8003 case elfcpp::R_POWERPC_GOT16_HA
:
8004 case elfcpp::R_PPC64_GOT16_DS
:
8005 case elfcpp::R_PPC64_GOT16_LO_DS
:
8006 case elfcpp::R_PPC64_GOT_PCREL34
:
8009 // PLT relocs are OK and need a PLT entry.
8010 case elfcpp::R_POWERPC_PLT16_LO
:
8011 case elfcpp::R_POWERPC_PLT16_HI
:
8012 case elfcpp::R_POWERPC_PLT16_HA
:
8013 case elfcpp::R_PPC64_PLT16_LO_DS
:
8014 case elfcpp::R_POWERPC_PLTSEQ
:
8015 case elfcpp::R_POWERPC_PLTCALL
:
8016 case elfcpp::R_PPC64_PLTSEQ_NOTOC
:
8017 case elfcpp::R_PPC64_PLTCALL_NOTOC
:
8018 case elfcpp::R_PPC64_PLT_PCREL34
:
8019 case elfcpp::R_PPC64_PLT_PCREL34_NOTOC
:
8023 // Function calls are good, and these do need a PLT entry.
8024 case elfcpp::R_PPC64_REL24_NOTOC
:
8028 case elfcpp::R_PPC64_REL24_P9NOTOC
:
8029 case elfcpp::R_POWERPC_ADDR24
:
8030 case elfcpp::R_POWERPC_ADDR14
:
8031 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
8032 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
8033 case elfcpp::R_POWERPC_REL24
:
8034 case elfcpp::R_PPC_PLTREL24
:
8035 case elfcpp::R_POWERPC_REL14
:
8036 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
8037 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
8044 // Anything else is a problem.
8045 // If we are building a static executable, the libc startup function
8046 // responsible for applying indirect function relocations is going
8047 // to complain about the reloc type.
8048 // If we are building a dynamic executable, we will have a text
8049 // relocation. The dynamic loader will set the text segment
8050 // writable and non-executable to apply text relocations. So we'll
8051 // segfault when trying to run the indirection function to resolve
8054 gold_error(_("%s: unsupported reloc %u for IFUNC symbol"),
8055 object
->name().c_str(), r_type
);
8059 // Return TRUE iff INSN is one we expect on a _LO variety toc/got
8063 ok_lo_toc_insn(uint32_t insn
, unsigned int r_type
)
8065 return ((insn
& (0x3f << 26)) == 12u << 26 /* addic */
8066 || (insn
& (0x3f << 26)) == 14u << 26 /* addi */
8067 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8068 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8069 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8070 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8071 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8072 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8073 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8074 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8075 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8076 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8077 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8078 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8079 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8080 || (insn
& (0x3f << 26)) == 56u << 26 /* lq,lfq */
8081 || ((insn
& (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */
8082 /* Exclude lfqu by testing reloc. If relocs are ever
8083 defined for the reduced D field in psq_lu then those
8084 will need testing too. */
8085 && r_type
!= elfcpp::R_PPC64_TOC16_LO
8086 && r_type
!= elfcpp::R_POWERPC_GOT16_LO
)
8087 || ((insn
& (0x3f << 26)) == 58u << 26 /* ld,lwa */
8089 || (insn
& (0x3f << 26)) == 60u << 26 /* stfq */
8090 || ((insn
& (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */
8091 /* Exclude stfqu. psq_stu as above for psq_lu. */
8092 && r_type
!= elfcpp::R_PPC64_TOC16_LO
8093 && r_type
!= elfcpp::R_POWERPC_GOT16_LO
)
8094 || ((insn
& (0x3f << 26)) == 62u << 26 /* std,stq */
8095 && (insn
& 1) == 0));
8098 // Scan a relocation for a local symbol.
8100 template<int size
, bool big_endian
>
8102 Target_powerpc
<size
, big_endian
>::Scan::local(
8103 Symbol_table
* symtab
,
8105 Target_powerpc
<size
, big_endian
>* target
,
8106 Sized_relobj_file
<size
, big_endian
>* object
,
8107 unsigned int data_shndx
,
8108 Output_section
* output_section
,
8109 const elfcpp::Rela
<size
, big_endian
>& reloc
,
8110 unsigned int r_type
,
8111 const elfcpp::Sym
<size
, big_endian
>& lsym
,
8114 Powerpc_relobj
<size
, big_endian
>* ppc_object
8115 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
8117 this->maybe_skip_tls_get_addr_call(target
, r_type
, NULL
);
8119 if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
8120 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
8122 this->expect_tls_get_addr_call();
8123 tls::Tls_optimization tls_type
= target
->optimize_tls_gd(true);
8124 if (tls_type
!= tls::TLSOPT_NONE
)
8125 this->skip_next_tls_get_addr_call();
8127 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
8128 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
8130 this->expect_tls_get_addr_call();
8131 tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
8132 if (tls_type
!= tls::TLSOPT_NONE
)
8133 this->skip_next_tls_get_addr_call();
8139 && data_shndx
== ppc_object
->opd_shndx()
8140 && r_type
== elfcpp::R_PPC64_ADDR64
)
8141 ppc_object
->set_opd_discard(reloc
.get_r_offset());
8145 // A local STT_GNU_IFUNC symbol may require a PLT entry.
8146 bool is_ifunc
= lsym
.get_st_type() == elfcpp::STT_GNU_IFUNC
;
8147 if (is_ifunc
&& this->reloc_needs_plt_for_ifunc(target
, object
, r_type
, true))
8149 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8150 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
8151 r_type
, r_sym
, reloc
.get_r_addend());
8152 target
->make_local_ifunc_plt_entry(symtab
, layout
, object
, r_sym
);
8157 case elfcpp::R_POWERPC_NONE
:
8158 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
8159 case elfcpp::R_POWERPC_GNU_VTENTRY
:
8160 case elfcpp::R_POWERPC_TLS
:
8161 case elfcpp::R_PPC64_ENTRY
:
8162 case elfcpp::R_POWERPC_PLTSEQ
:
8163 case elfcpp::R_POWERPC_PLTCALL
:
8164 case elfcpp::R_PPC64_PLTSEQ_NOTOC
:
8165 case elfcpp::R_PPC64_PLTCALL_NOTOC
:
8166 case elfcpp::R_PPC64_PCREL_OPT
:
8167 case elfcpp::R_PPC64_ADDR16_HIGHER34
:
8168 case elfcpp::R_PPC64_ADDR16_HIGHERA34
:
8169 case elfcpp::R_PPC64_ADDR16_HIGHEST34
:
8170 case elfcpp::R_PPC64_ADDR16_HIGHESTA34
:
8171 case elfcpp::R_PPC64_REL16_HIGHER34
:
8172 case elfcpp::R_PPC64_REL16_HIGHERA34
:
8173 case elfcpp::R_PPC64_REL16_HIGHEST34
:
8174 case elfcpp::R_PPC64_REL16_HIGHESTA34
:
8175 case elfcpp::R_PPC64_D34
:
8176 case elfcpp::R_PPC64_D34_LO
:
8177 case elfcpp::R_PPC64_D34_HI30
:
8178 case elfcpp::R_PPC64_D34_HA30
:
8179 case elfcpp::R_PPC64_D28
:
8180 case elfcpp::R_PPC64_PCREL34
:
8181 case elfcpp::R_PPC64_PCREL28
:
8182 case elfcpp::R_PPC64_TPREL34
:
8183 case elfcpp::R_PPC64_DTPREL34
:
8186 case elfcpp::R_PPC64_TOC
:
8188 Output_data_got_powerpc
<size
, big_endian
>* got
8189 = target
->got_section(symtab
, layout
, GOT_TYPE_SMALL
);
8190 if (parameters
->options().output_is_position_independent())
8192 Address off
= reloc
.get_r_offset();
8194 && target
->abiversion() < 2
8195 && data_shndx
== ppc_object
->opd_shndx()
8196 && ppc_object
->get_opd_discard(off
- 8))
8199 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
8200 Address got_off
= got
->g_o_t();
8201 rela_dyn
->add_output_section_relative(got
->output_section(),
8202 elfcpp::R_POWERPC_RELATIVE
,
8204 object
, data_shndx
, off
,
8210 case elfcpp::R_PPC64_ADDR64
:
8211 case elfcpp::R_PPC64_UADDR64
:
8212 case elfcpp::R_POWERPC_ADDR32
:
8213 case elfcpp::R_POWERPC_UADDR32
:
8214 case elfcpp::R_POWERPC_ADDR24
:
8215 case elfcpp::R_POWERPC_ADDR16
:
8216 case elfcpp::R_POWERPC_ADDR16_LO
:
8217 case elfcpp::R_POWERPC_ADDR16_HI
:
8218 case elfcpp::R_POWERPC_ADDR16_HA
:
8219 case elfcpp::R_POWERPC_UADDR16
:
8220 case elfcpp::R_PPC64_ADDR16_HIGH
:
8221 case elfcpp::R_PPC64_ADDR16_HIGHA
:
8222 case elfcpp::R_PPC64_ADDR16_HIGHER
:
8223 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
8224 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
8225 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
8226 case elfcpp::R_PPC64_ADDR16_DS
:
8227 case elfcpp::R_PPC64_ADDR16_LO_DS
:
8228 case elfcpp::R_POWERPC_ADDR14
:
8229 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
8230 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
8231 // If building a shared library (or a position-independent
8232 // executable), we need to create a dynamic relocation for
8234 if (parameters
->options().output_is_position_independent()
8235 || (size
== 64 && is_ifunc
&& target
->abiversion() < 2))
8237 Reloc_section
* rela_dyn
= target
->rela_dyn_section(symtab
, layout
,
8239 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8240 if ((size
== 32 && r_type
== elfcpp::R_POWERPC_ADDR32
)
8241 || (size
== 64 && r_type
== elfcpp::R_PPC64_ADDR64
))
8243 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
8244 : elfcpp::R_POWERPC_RELATIVE
);
8245 rela_dyn
->add_local_relative(object
, r_sym
, dynrel
,
8246 output_section
, data_shndx
,
8247 reloc
.get_r_offset(),
8248 reloc
.get_r_addend(), false);
8250 else if (lsym
.get_st_type() != elfcpp::STT_SECTION
)
8252 check_non_pic(object
, r_type
);
8253 rela_dyn
->add_local(object
, r_sym
, r_type
, output_section
,
8254 data_shndx
, reloc
.get_r_offset(),
8255 reloc
.get_r_addend());
8259 gold_assert(lsym
.get_st_value() == 0);
8260 unsigned int shndx
= lsym
.get_st_shndx();
8262 shndx
= object
->adjust_sym_shndx(r_sym
, shndx
,
8265 object
->error(_("section symbol %u has bad shndx %u"),
8268 rela_dyn
->add_local_section(object
, shndx
, r_type
,
8269 output_section
, data_shndx
,
8270 reloc
.get_r_offset());
8275 case elfcpp::R_PPC64_PLT_PCREL34
:
8276 case elfcpp::R_PPC64_PLT_PCREL34_NOTOC
:
8277 case elfcpp::R_POWERPC_PLT16_LO
:
8278 case elfcpp::R_POWERPC_PLT16_HI
:
8279 case elfcpp::R_POWERPC_PLT16_HA
:
8280 case elfcpp::R_PPC64_PLT16_LO_DS
:
8283 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8284 target
->make_local_plt_entry(symtab
, layout
, object
, r_sym
);
8288 case elfcpp::R_PPC64_REL24_NOTOC
:
8292 case elfcpp::R_PPC64_REL24_P9NOTOC
:
8293 case elfcpp::R_POWERPC_REL24
:
8294 case elfcpp::R_PPC_PLTREL24
:
8295 case elfcpp::R_PPC_LOCAL24PC
:
8296 case elfcpp::R_POWERPC_REL14
:
8297 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
8298 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
8301 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8302 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
8303 r_type
, r_sym
, reloc
.get_r_addend());
8307 case elfcpp::R_PPC64_TOCSAVE
:
8308 // R_PPC64_TOCSAVE follows a call instruction to indicate the
8309 // caller has already saved r2 and thus a plt call stub need not
8312 && target
->mark_pltcall(ppc_object
, data_shndx
,
8313 reloc
.get_r_offset() - 4, symtab
))
8315 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8316 unsigned int shndx
= lsym
.get_st_shndx();
8318 shndx
= object
->adjust_sym_shndx(r_sym
, shndx
, &is_ordinary
);
8320 object
->error(_("tocsave symbol %u has bad shndx %u"),
8323 target
->add_tocsave(ppc_object
, shndx
,
8324 lsym
.get_st_value() + reloc
.get_r_addend());
8328 case elfcpp::R_PPC64_REL64
:
8329 case elfcpp::R_POWERPC_REL32
:
8330 case elfcpp::R_POWERPC_REL16
:
8331 case elfcpp::R_POWERPC_REL16_LO
:
8332 case elfcpp::R_POWERPC_REL16_HI
:
8333 case elfcpp::R_POWERPC_REL16_HA
:
8334 case elfcpp::R_POWERPC_REL16DX_HA
:
8335 case elfcpp::R_PPC64_REL16_HIGH
:
8336 case elfcpp::R_PPC64_REL16_HIGHA
:
8337 case elfcpp::R_PPC64_REL16_HIGHER
:
8338 case elfcpp::R_PPC64_REL16_HIGHERA
:
8339 case elfcpp::R_PPC64_REL16_HIGHEST
:
8340 case elfcpp::R_PPC64_REL16_HIGHESTA
:
8341 case elfcpp::R_POWERPC_SECTOFF
:
8342 case elfcpp::R_POWERPC_SECTOFF_LO
:
8343 case elfcpp::R_POWERPC_SECTOFF_HI
:
8344 case elfcpp::R_POWERPC_SECTOFF_HA
:
8345 case elfcpp::R_PPC64_SECTOFF_DS
:
8346 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
8347 case elfcpp::R_POWERPC_TPREL16
:
8348 case elfcpp::R_POWERPC_TPREL16_LO
:
8349 case elfcpp::R_POWERPC_TPREL16_HI
:
8350 case elfcpp::R_POWERPC_TPREL16_HA
:
8351 case elfcpp::R_PPC64_TPREL16_DS
:
8352 case elfcpp::R_PPC64_TPREL16_LO_DS
:
8353 case elfcpp::R_PPC64_TPREL16_HIGH
:
8354 case elfcpp::R_PPC64_TPREL16_HIGHA
:
8355 case elfcpp::R_PPC64_TPREL16_HIGHER
:
8356 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
8357 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
8358 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
8359 case elfcpp::R_POWERPC_DTPREL16
:
8360 case elfcpp::R_POWERPC_DTPREL16_LO
:
8361 case elfcpp::R_POWERPC_DTPREL16_HI
:
8362 case elfcpp::R_POWERPC_DTPREL16_HA
:
8363 case elfcpp::R_PPC64_DTPREL16_DS
:
8364 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
8365 case elfcpp::R_PPC64_DTPREL16_HIGH
:
8366 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
8367 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
8368 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
8369 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
8370 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
8371 case elfcpp::R_PPC64_TLSGD
:
8372 case elfcpp::R_PPC64_TLSLD
:
8373 case elfcpp::R_PPC64_ADDR64_LOCAL
:
8376 case elfcpp::R_PPC64_GOT_PCREL34
:
8377 case elfcpp::R_POWERPC_GOT16
:
8378 case elfcpp::R_POWERPC_GOT16_LO
:
8379 case elfcpp::R_POWERPC_GOT16_HI
:
8380 case elfcpp::R_POWERPC_GOT16_HA
:
8381 case elfcpp::R_PPC64_GOT16_DS
:
8382 case elfcpp::R_PPC64_GOT16_LO_DS
:
8384 // The symbol requires a GOT entry.
8385 Got_type got_type
= ((size
== 32
8386 || r_type
== elfcpp::R_POWERPC_GOT16
8387 || r_type
== elfcpp::R_PPC64_GOT16_DS
)
8388 ? GOT_TYPE_SMALL
: GOT_TYPE_STANDARD
);
8389 Output_data_got_powerpc
<size
, big_endian
>* got
8390 = target
->got_section(symtab
, layout
, got_type
);
8391 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8392 uint64_t addend
= size
== 32 ? 0 : reloc
.get_r_addend();
8394 if (!parameters
->options().output_is_position_independent())
8397 && (size
== 32 || target
->abiversion() >= 2))
8398 got
->add_local_plt(object
, r_sym
, got_type
, addend
);
8400 got
->add_local(object
, r_sym
, got_type
, addend
);
8402 else if (!object
->local_has_got_offset(r_sym
, got_type
, addend
))
8404 // If we are generating a shared object or a pie, this
8405 // symbol's GOT entry will be set by a dynamic relocation.
8407 off
= got
->add_constant(0);
8408 object
->set_local_got_offset(r_sym
, got_type
, off
, addend
);
8410 Reloc_section
* rela_dyn
= target
->rela_dyn_section(symtab
, layout
,
8412 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
8413 : elfcpp::R_POWERPC_RELATIVE
);
8414 rela_dyn
->add_local_relative(object
, r_sym
, dynrel
,
8415 got
, off
, addend
, false);
8420 case elfcpp::R_PPC64_TOC16
:
8421 case elfcpp::R_PPC64_TOC16_LO
:
8422 case elfcpp::R_PPC64_TOC16_HI
:
8423 case elfcpp::R_PPC64_TOC16_HA
:
8424 case elfcpp::R_PPC64_TOC16_DS
:
8425 case elfcpp::R_PPC64_TOC16_LO_DS
:
8426 // We need a GOT section.
8427 target
->got_section(symtab
, layout
, GOT_TYPE_SMALL
);
8430 case elfcpp::R_PPC64_GOT_TLSGD_PCREL34
:
8431 case elfcpp::R_POWERPC_GOT_TLSGD16
:
8432 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
8433 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
8434 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
8436 tls::Tls_optimization tls_type
= target
->optimize_tls_gd(true);
8437 if (tls_type
== tls::TLSOPT_NONE
)
8439 Got_type got_type
= ((size
== 32
8440 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
)
8441 ? GOT_TYPE_SMALL_TLSGD
: GOT_TYPE_TLSGD
);
8442 Output_data_got_powerpc
<size
, big_endian
>* got
8443 = target
->got_section(symtab
, layout
, got_type
);
8444 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8445 uint64_t addend
= size
== 32 ? 0 : reloc
.get_r_addend();
8446 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
8447 got
->add_local_tls_pair(object
, r_sym
, got_type
,
8448 rela_dyn
, elfcpp::R_POWERPC_DTPMOD
,
8451 else if (tls_type
== tls::TLSOPT_TO_LE
)
8453 // no GOT relocs needed for Local Exec.
8460 case elfcpp::R_PPC64_GOT_TLSLD_PCREL34
:
8461 case elfcpp::R_POWERPC_GOT_TLSLD16
:
8462 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
8463 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
8464 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
8466 tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
8467 if (tls_type
== tls::TLSOPT_NONE
)
8468 target
->tlsld_got_offset(symtab
, layout
, object
);
8469 else if (tls_type
== tls::TLSOPT_TO_LE
)
8471 // no GOT relocs needed for Local Exec.
8472 if (parameters
->options().emit_relocs())
8474 Output_section
* os
= layout
->tls_segment()->first_section();
8475 gold_assert(os
!= NULL
);
8476 os
->set_needs_symtab_index();
8484 case elfcpp::R_PPC64_GOT_DTPREL_PCREL34
:
8485 case elfcpp::R_POWERPC_GOT_DTPREL16
:
8486 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
8487 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
8488 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
8490 Got_type got_type
= ((size
== 32
8491 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16
)
8492 ? GOT_TYPE_SMALL_DTPREL
: GOT_TYPE_DTPREL
);
8493 Output_data_got_powerpc
<size
, big_endian
>* got
8494 = target
->got_section(symtab
, layout
, got_type
);
8495 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8496 uint64_t addend
= size
== 32 ? 0 : reloc
.get_r_addend();
8497 got
->add_local_tls(object
, r_sym
, got_type
, addend
);
8501 case elfcpp::R_PPC64_GOT_TPREL_PCREL34
:
8502 case elfcpp::R_POWERPC_GOT_TPREL16
:
8503 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
8504 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
8505 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
8507 tls::Tls_optimization tls_type
= target
->optimize_tls_ie(true);
8508 if (tls_type
== tls::TLSOPT_NONE
)
8510 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8511 uint64_t addend
= size
== 32 ? 0 : reloc
.get_r_addend();
8512 Got_type got_type
= ((size
== 32
8513 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16
)
8514 ? GOT_TYPE_SMALL_TPREL
: GOT_TYPE_TPREL
);
8515 if (!object
->local_has_got_offset(r_sym
, got_type
, addend
))
8517 Output_data_got_powerpc
<size
, big_endian
>* got
8518 = target
->got_section(symtab
, layout
, got_type
);
8519 unsigned int off
= got
->add_constant(0);
8520 object
->set_local_got_offset(r_sym
, got_type
, off
, addend
);
8522 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
8523 rela_dyn
->add_symbolless_local_addend(object
, r_sym
,
8524 elfcpp::R_POWERPC_TPREL
,
8528 else if (tls_type
== tls::TLSOPT_TO_LE
)
8530 // no GOT relocs needed for Local Exec.
8538 unsupported_reloc_local(object
, r_type
);
8543 && parameters
->options().toc_optimize())
8545 if (data_shndx
== ppc_object
->toc_shndx())
8548 if (r_type
!= elfcpp::R_PPC64_ADDR64
8549 || (is_ifunc
&& target
->abiversion() < 2))
8551 else if (parameters
->options().output_is_position_independent())
8557 unsigned int shndx
= lsym
.get_st_shndx();
8558 if (shndx
>= elfcpp::SHN_LORESERVE
8559 && shndx
!= elfcpp::SHN_XINDEX
)
8564 ppc_object
->set_no_toc_opt(reloc
.get_r_offset());
8567 enum {no_check
, check_lo
, check_ha
} insn_check
;
8571 insn_check
= no_check
;
8574 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
8575 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
8576 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
8577 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
8578 case elfcpp::R_POWERPC_GOT16_HA
:
8579 case elfcpp::R_PPC64_TOC16_HA
:
8580 insn_check
= check_ha
;
8583 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
8584 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
8585 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
8586 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
8587 case elfcpp::R_POWERPC_GOT16_LO
:
8588 case elfcpp::R_PPC64_GOT16_LO_DS
:
8589 case elfcpp::R_PPC64_TOC16_LO
:
8590 case elfcpp::R_PPC64_TOC16_LO_DS
:
8591 insn_check
= check_lo
;
8595 section_size_type slen
;
8596 const unsigned char* view
= NULL
;
8597 if (insn_check
!= no_check
)
8599 view
= ppc_object
->section_contents(data_shndx
, &slen
, false);
8600 section_size_type off
=
8601 convert_to_section_size_type(reloc
.get_r_offset()) & -4;
8604 uint32_t insn
= elfcpp::Swap
<32, big_endian
>::readval(view
+ off
);
8605 if (insn_check
== check_lo
8606 ? !ok_lo_toc_insn(insn
, r_type
)
8607 : ((insn
& ((0x3f << 26) | 0x1f << 16))
8608 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8610 ppc_object
->set_no_toc_opt();
8611 gold_warning(_("%s: toc optimization is not supported "
8612 "for %#08x instruction"),
8613 ppc_object
->name().c_str(), insn
);
8622 case elfcpp::R_PPC64_TOC16
:
8623 case elfcpp::R_PPC64_TOC16_LO
:
8624 case elfcpp::R_PPC64_TOC16_HI
:
8625 case elfcpp::R_PPC64_TOC16_HA
:
8626 case elfcpp::R_PPC64_TOC16_DS
:
8627 case elfcpp::R_PPC64_TOC16_LO_DS
:
8628 unsigned int shndx
= lsym
.get_st_shndx();
8629 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8631 shndx
= ppc_object
->adjust_sym_shndx(r_sym
, shndx
, &is_ordinary
);
8632 if (is_ordinary
&& shndx
== ppc_object
->toc_shndx())
8634 Address dst_off
= lsym
.get_st_value() + reloc
.get_r_addend();
8635 if (dst_off
< ppc_object
->section_size(shndx
))
8638 if (r_type
== elfcpp::R_PPC64_TOC16_HA
)
8640 else if (r_type
== elfcpp::R_PPC64_TOC16_LO_DS
)
8642 // Need to check that the insn is a ld
8644 view
= ppc_object
->section_contents(data_shndx
,
8647 section_size_type off
=
8648 (convert_to_section_size_type(reloc
.get_r_offset())
8649 + (big_endian
? -2 : 3));
8651 && (view
[off
] & (0x3f << 2)) == 58u << 2)
8655 ppc_object
->set_no_toc_opt(dst_off
);
8666 case elfcpp::R_POWERPC_REL32
:
8667 if (ppc_object
->got2_shndx() != 0
8668 && parameters
->options().output_is_position_independent())
8670 unsigned int shndx
= lsym
.get_st_shndx();
8671 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8673 shndx
= ppc_object
->adjust_sym_shndx(r_sym
, shndx
, &is_ordinary
);
8674 if (is_ordinary
&& shndx
== ppc_object
->got2_shndx()
8675 && (ppc_object
->section_flags(data_shndx
)
8676 & elfcpp::SHF_EXECINSTR
) != 0)
8677 gold_error(_("%s: unsupported -mbss-plt code"),
8678 ppc_object
->name().c_str());
8688 case elfcpp::R_POWERPC_GOT_TLSLD16
:
8689 case elfcpp::R_POWERPC_GOT_TLSGD16
:
8690 case elfcpp::R_POWERPC_GOT_TPREL16
:
8691 case elfcpp::R_POWERPC_GOT_DTPREL16
:
8692 case elfcpp::R_POWERPC_GOT16
:
8693 case elfcpp::R_PPC64_GOT16_DS
:
8694 case elfcpp::R_PPC64_TOC16
:
8695 case elfcpp::R_PPC64_TOC16_DS
:
8696 ppc_object
->set_has_small_toc_reloc();
8704 case elfcpp::R_PPC64_TPREL16_DS
:
8705 case elfcpp::R_PPC64_TPREL16_LO_DS
:
8706 case elfcpp::R_PPC64_TPREL16_HIGH
:
8707 case elfcpp::R_PPC64_TPREL16_HIGHA
:
8708 case elfcpp::R_PPC64_TPREL16_HIGHER
:
8709 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
8710 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
8711 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
8712 case elfcpp::R_PPC64_TPREL34
:
8716 case elfcpp::R_POWERPC_TPREL16
:
8717 case elfcpp::R_POWERPC_TPREL16_LO
:
8718 case elfcpp::R_POWERPC_TPREL16_HI
:
8719 case elfcpp::R_POWERPC_TPREL16_HA
:
8720 layout
->set_has_static_tls();
8728 case elfcpp::R_POWERPC_TPREL16_HA
:
8729 if (target
->tprel_opt())
8731 section_size_type slen
;
8732 const unsigned char* view
= NULL
;
8733 view
= ppc_object
->section_contents(data_shndx
, &slen
, false);
8734 section_size_type off
8735 = convert_to_section_size_type(reloc
.get_r_offset()) & -4;
8738 uint32_t insn
= elfcpp::Swap
<32, big_endian
>::readval(view
+ off
);
8739 if ((insn
& ((0x3fu
<< 26) | 0x1f << 16))
8740 != ((15u << 26) | ((size
== 32 ? 2 : 13) << 16)))
8741 target
->set_no_tprel_opt();
8746 case elfcpp::R_PPC64_TPREL16_HIGH
:
8747 case elfcpp::R_PPC64_TPREL16_HIGHA
:
8748 case elfcpp::R_PPC64_TPREL16_HIGHER
:
8749 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
8750 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
8751 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
8755 case elfcpp::R_POWERPC_TPREL16_HI
:
8756 target
->set_no_tprel_opt();
8764 case elfcpp::R_PPC64_D34
:
8765 case elfcpp::R_PPC64_D34_LO
:
8766 case elfcpp::R_PPC64_D34_HI30
:
8767 case elfcpp::R_PPC64_D34_HA30
:
8768 case elfcpp::R_PPC64_D28
:
8769 case elfcpp::R_PPC64_PCREL34
:
8770 case elfcpp::R_PPC64_PCREL28
:
8771 case elfcpp::R_PPC64_TPREL34
:
8772 case elfcpp::R_PPC64_DTPREL34
:
8773 case elfcpp::R_PPC64_PLT_PCREL34
:
8774 case elfcpp::R_PPC64_PLT_PCREL34_NOTOC
:
8775 case elfcpp::R_PPC64_GOT_PCREL34
:
8776 case elfcpp::R_PPC64_GOT_TLSGD_PCREL34
:
8777 case elfcpp::R_PPC64_GOT_TLSLD_PCREL34
:
8778 case elfcpp::R_PPC64_GOT_DTPREL_PCREL34
:
8779 case elfcpp::R_PPC64_GOT_TPREL_PCREL34
:
8780 target
->set_power10_relocs();
8787 // Report an unsupported relocation against a global symbol.
8789 template<int size
, bool big_endian
>
8791 Target_powerpc
<size
, big_endian
>::Scan::unsupported_reloc_global(
8792 Sized_relobj_file
<size
, big_endian
>* object
,
8793 unsigned int r_type
,
8796 gold_error(_("%s: unsupported reloc %u against global symbol %s"),
8797 object
->name().c_str(), r_type
, gsym
->demangled_name().c_str());
8800 // Scan a relocation for a global symbol.
8802 template<int size
, bool big_endian
>
8804 Target_powerpc
<size
, big_endian
>::Scan::global(
8805 Symbol_table
* symtab
,
8807 Target_powerpc
<size
, big_endian
>* target
,
8808 Sized_relobj_file
<size
, big_endian
>* object
,
8809 unsigned int data_shndx
,
8810 Output_section
* output_section
,
8811 const elfcpp::Rela
<size
, big_endian
>& reloc
,
8812 unsigned int r_type
,
8815 Powerpc_relobj
<size
, big_endian
>* ppc_object
8816 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
8818 switch (this->maybe_skip_tls_get_addr_call(target
, r_type
, gsym
))
8820 case Track_tls::SKIP
:
8826 if (target
->replace_tls_get_addr(gsym
))
8827 // Change a __tls_get_addr reference to __tls_get_addr_opt
8828 // so dynamic relocs are emitted against the latter symbol.
8829 gsym
= target
->tls_get_addr_opt();
8831 if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
8832 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
8834 this->expect_tls_get_addr_call();
8835 bool final
= gsym
->final_value_is_known();
8836 tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
8837 if (tls_type
!= tls::TLSOPT_NONE
)
8838 this->skip_next_tls_get_addr_call();
8840 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
8841 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
8843 this->expect_tls_get_addr_call();
8844 tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
8845 if (tls_type
!= tls::TLSOPT_NONE
)
8846 this->skip_next_tls_get_addr_call();
8849 // A STT_GNU_IFUNC symbol may require a PLT entry.
8850 bool is_ifunc
= gsym
->type() == elfcpp::STT_GNU_IFUNC
;
8851 bool pushed_ifunc
= false;
8852 if (is_ifunc
&& this->reloc_needs_plt_for_ifunc(target
, object
, r_type
, true))
8854 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8855 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
8856 r_type
, r_sym
, reloc
.get_r_addend());
8857 target
->make_plt_entry(symtab
, layout
, gsym
);
8858 pushed_ifunc
= true;
8863 case elfcpp::R_POWERPC_NONE
:
8864 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
8865 case elfcpp::R_POWERPC_GNU_VTENTRY
:
8866 case elfcpp::R_PPC_LOCAL24PC
:
8867 case elfcpp::R_POWERPC_TLS
:
8868 case elfcpp::R_PPC64_ENTRY
:
8869 case elfcpp::R_POWERPC_PLTSEQ
:
8870 case elfcpp::R_POWERPC_PLTCALL
:
8871 case elfcpp::R_PPC64_PLTSEQ_NOTOC
:
8872 case elfcpp::R_PPC64_PLTCALL_NOTOC
:
8873 case elfcpp::R_PPC64_PCREL_OPT
:
8874 case elfcpp::R_PPC64_ADDR16_HIGHER34
:
8875 case elfcpp::R_PPC64_ADDR16_HIGHERA34
:
8876 case elfcpp::R_PPC64_ADDR16_HIGHEST34
:
8877 case elfcpp::R_PPC64_ADDR16_HIGHESTA34
:
8878 case elfcpp::R_PPC64_REL16_HIGHER34
:
8879 case elfcpp::R_PPC64_REL16_HIGHERA34
:
8880 case elfcpp::R_PPC64_REL16_HIGHEST34
:
8881 case elfcpp::R_PPC64_REL16_HIGHESTA34
:
8882 case elfcpp::R_PPC64_D34
:
8883 case elfcpp::R_PPC64_D34_LO
:
8884 case elfcpp::R_PPC64_D34_HI30
:
8885 case elfcpp::R_PPC64_D34_HA30
:
8886 case elfcpp::R_PPC64_D28
:
8887 case elfcpp::R_PPC64_PCREL34
:
8888 case elfcpp::R_PPC64_PCREL28
:
8889 case elfcpp::R_PPC64_TPREL34
:
8890 case elfcpp::R_PPC64_DTPREL34
:
8893 case elfcpp::R_PPC64_TOC
:
8895 Output_data_got_powerpc
<size
, big_endian
>* got
8896 = target
->got_section(symtab
, layout
, GOT_TYPE_SMALL
);
8897 if (parameters
->options().output_is_position_independent())
8899 Address off
= reloc
.get_r_offset();
8901 && data_shndx
== ppc_object
->opd_shndx()
8902 && ppc_object
->get_opd_discard(off
- 8))
8905 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
8906 Address got_off
= got
->g_o_t();
8907 rela_dyn
->add_output_section_relative(got
->output_section(),
8908 elfcpp::R_POWERPC_RELATIVE
,
8910 object
, data_shndx
, off
,
8916 case elfcpp::R_PPC64_ADDR64
:
8918 && target
->abiversion() < 2
8919 && data_shndx
== ppc_object
->opd_shndx()
8920 && (gsym
->is_defined_in_discarded_section()
8921 || gsym
->object() != object
))
8923 ppc_object
->set_opd_discard(reloc
.get_r_offset());
8927 case elfcpp::R_PPC64_UADDR64
:
8928 case elfcpp::R_POWERPC_ADDR32
:
8929 case elfcpp::R_POWERPC_UADDR32
:
8930 case elfcpp::R_POWERPC_ADDR24
:
8931 case elfcpp::R_POWERPC_ADDR16
:
8932 case elfcpp::R_POWERPC_ADDR16_LO
:
8933 case elfcpp::R_POWERPC_ADDR16_HI
:
8934 case elfcpp::R_POWERPC_ADDR16_HA
:
8935 case elfcpp::R_POWERPC_UADDR16
:
8936 case elfcpp::R_PPC64_ADDR16_HIGH
:
8937 case elfcpp::R_PPC64_ADDR16_HIGHA
:
8938 case elfcpp::R_PPC64_ADDR16_HIGHER
:
8939 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
8940 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
8941 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
8942 case elfcpp::R_PPC64_ADDR16_DS
:
8943 case elfcpp::R_PPC64_ADDR16_LO_DS
:
8944 case elfcpp::R_POWERPC_ADDR14
:
8945 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
8946 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
8948 // Make a PLT entry if necessary.
8949 if (gsym
->needs_plt_entry())
8951 // Since this is not a PC-relative relocation, we may be
8952 // taking the address of a function. In that case we need to
8953 // set the entry in the dynamic symbol table to the address of
8954 // the PLT call stub.
8955 bool need_ifunc_plt
= false;
8956 if ((size
== 32 || target
->abiversion() >= 2)
8957 && gsym
->is_from_dynobj()
8958 && !parameters
->options().output_is_position_independent())
8960 gsym
->set_needs_dynsym_value();
8961 need_ifunc_plt
= true;
8963 if (!is_ifunc
|| (!pushed_ifunc
&& need_ifunc_plt
))
8965 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8966 target
->push_branch(ppc_object
, data_shndx
,
8967 reloc
.get_r_offset(), r_type
, r_sym
,
8968 reloc
.get_r_addend());
8969 target
->make_plt_entry(symtab
, layout
, gsym
);
8972 // Make a dynamic relocation if necessary.
8973 if (gsym
->needs_dynamic_reloc(Scan::get_reference_flags(r_type
, target
))
8974 || (size
== 64 && is_ifunc
&& target
->abiversion() < 2))
8976 if (!parameters
->options().output_is_position_independent()
8977 && gsym
->may_need_copy_reloc())
8979 target
->copy_reloc(symtab
, layout
, object
,
8980 data_shndx
, output_section
, gsym
, reloc
);
8982 else if ((((size
== 32
8983 && r_type
== elfcpp::R_POWERPC_ADDR32
)
8985 && r_type
== elfcpp::R_PPC64_ADDR64
8986 && target
->abiversion() >= 2))
8987 && gsym
->can_use_relative_reloc(false)
8988 && !(gsym
->visibility() == elfcpp::STV_PROTECTED
8989 && parameters
->options().shared()))
8991 && r_type
== elfcpp::R_PPC64_ADDR64
8992 && target
->abiversion() < 2
8993 && (gsym
->can_use_relative_reloc(false)
8994 || data_shndx
== ppc_object
->opd_shndx())))
8996 Reloc_section
* rela_dyn
8997 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
8998 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
8999 : elfcpp::R_POWERPC_RELATIVE
);
9000 rela_dyn
->add_symbolless_global_addend(
9001 gsym
, dynrel
, output_section
, object
, data_shndx
,
9002 reloc
.get_r_offset(), reloc
.get_r_addend());
9006 Reloc_section
* rela_dyn
9007 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
9008 check_non_pic(object
, r_type
);
9009 rela_dyn
->add_global(gsym
, r_type
, output_section
,
9011 reloc
.get_r_offset(),
9012 reloc
.get_r_addend());
9015 && parameters
->options().toc_optimize()
9016 && data_shndx
== ppc_object
->toc_shndx())
9017 ppc_object
->set_no_toc_opt(reloc
.get_r_offset());
9023 case elfcpp::R_PPC64_PLT_PCREL34
:
9024 case elfcpp::R_PPC64_PLT_PCREL34_NOTOC
:
9025 case elfcpp::R_POWERPC_PLT16_LO
:
9026 case elfcpp::R_POWERPC_PLT16_HI
:
9027 case elfcpp::R_POWERPC_PLT16_HA
:
9028 case elfcpp::R_PPC64_PLT16_LO_DS
:
9031 if (branch_needs_plt_entry(gsym
))
9032 target
->make_plt_entry(symtab
, layout
, gsym
);
9034 target
->make_local_plt_entry(symtab
, layout
, gsym
);
9038 case elfcpp::R_PPC64_REL24_NOTOC
:
9042 case elfcpp::R_PPC64_REL24_P9NOTOC
:
9043 case elfcpp::R_PPC_PLTREL24
:
9044 case elfcpp::R_POWERPC_REL24
:
9047 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
9048 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
9049 r_type
, r_sym
, reloc
.get_r_addend());
9050 if (branch_needs_plt_entry(gsym
))
9051 target
->make_plt_entry(symtab
, layout
, gsym
);
9055 case elfcpp::R_PPC64_REL64
:
9056 case elfcpp::R_POWERPC_REL32
:
9057 // Make a dynamic relocation if necessary.
9058 if (gsym
->needs_dynamic_reloc(Scan::get_reference_flags(r_type
, target
)))
9060 if (!parameters
->options().output_is_position_independent()
9061 && gsym
->may_need_copy_reloc())
9063 target
->copy_reloc(symtab
, layout
, object
,
9064 data_shndx
, output_section
, gsym
,
9069 Reloc_section
* rela_dyn
9070 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
9071 check_non_pic(object
, r_type
);
9072 rela_dyn
->add_global(gsym
, r_type
, output_section
, object
,
9073 data_shndx
, reloc
.get_r_offset(),
9074 reloc
.get_r_addend());
9079 case elfcpp::R_POWERPC_REL14
:
9080 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
9081 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
9084 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
9085 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
9086 r_type
, r_sym
, reloc
.get_r_addend());
9090 case elfcpp::R_PPC64_TOCSAVE
:
9091 // R_PPC64_TOCSAVE follows a call instruction to indicate the
9092 // caller has already saved r2 and thus a plt call stub need not
9095 && target
->mark_pltcall(ppc_object
, data_shndx
,
9096 reloc
.get_r_offset() - 4, symtab
))
9098 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
9100 unsigned int shndx
= gsym
->shndx(&is_ordinary
);
9102 object
->error(_("tocsave symbol %u has bad shndx %u"),
9106 Sized_symbol
<size
>* sym
= symtab
->get_sized_symbol
<size
>(gsym
);
9107 target
->add_tocsave(ppc_object
, shndx
,
9108 sym
->value() + reloc
.get_r_addend());
9113 case elfcpp::R_POWERPC_REL16
:
9114 case elfcpp::R_POWERPC_REL16_LO
:
9115 case elfcpp::R_POWERPC_REL16_HI
:
9116 case elfcpp::R_POWERPC_REL16_HA
:
9117 case elfcpp::R_POWERPC_REL16DX_HA
:
9118 case elfcpp::R_PPC64_REL16_HIGH
:
9119 case elfcpp::R_PPC64_REL16_HIGHA
:
9120 case elfcpp::R_PPC64_REL16_HIGHER
:
9121 case elfcpp::R_PPC64_REL16_HIGHERA
:
9122 case elfcpp::R_PPC64_REL16_HIGHEST
:
9123 case elfcpp::R_PPC64_REL16_HIGHESTA
:
9124 case elfcpp::R_POWERPC_SECTOFF
:
9125 case elfcpp::R_POWERPC_SECTOFF_LO
:
9126 case elfcpp::R_POWERPC_SECTOFF_HI
:
9127 case elfcpp::R_POWERPC_SECTOFF_HA
:
9128 case elfcpp::R_PPC64_SECTOFF_DS
:
9129 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
9130 case elfcpp::R_POWERPC_TPREL16
:
9131 case elfcpp::R_POWERPC_TPREL16_LO
:
9132 case elfcpp::R_POWERPC_TPREL16_HI
:
9133 case elfcpp::R_POWERPC_TPREL16_HA
:
9134 case elfcpp::R_PPC64_TPREL16_DS
:
9135 case elfcpp::R_PPC64_TPREL16_LO_DS
:
9136 case elfcpp::R_PPC64_TPREL16_HIGH
:
9137 case elfcpp::R_PPC64_TPREL16_HIGHA
:
9138 case elfcpp::R_PPC64_TPREL16_HIGHER
:
9139 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
9140 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
9141 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
9142 case elfcpp::R_POWERPC_DTPREL16
:
9143 case elfcpp::R_POWERPC_DTPREL16_LO
:
9144 case elfcpp::R_POWERPC_DTPREL16_HI
:
9145 case elfcpp::R_POWERPC_DTPREL16_HA
:
9146 case elfcpp::R_PPC64_DTPREL16_DS
:
9147 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
9148 case elfcpp::R_PPC64_DTPREL16_HIGH
:
9149 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
9150 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
9151 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
9152 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
9153 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
9154 case elfcpp::R_PPC64_TLSGD
:
9155 case elfcpp::R_PPC64_TLSLD
:
9156 case elfcpp::R_PPC64_ADDR64_LOCAL
:
9159 case elfcpp::R_PPC64_GOT_PCREL34
:
9160 case elfcpp::R_POWERPC_GOT16
:
9161 case elfcpp::R_POWERPC_GOT16_LO
:
9162 case elfcpp::R_POWERPC_GOT16_HI
:
9163 case elfcpp::R_POWERPC_GOT16_HA
:
9164 case elfcpp::R_PPC64_GOT16_DS
:
9165 case elfcpp::R_PPC64_GOT16_LO_DS
:
9167 // The symbol requires a GOT entry.
9168 Output_data_got_powerpc
<size
, big_endian
>* got
;
9169 uint64_t addend
= size
== 32 ? 0 : reloc
.get_r_addend();
9170 Got_type got_type
= ((size
== 32
9171 || r_type
== elfcpp::R_POWERPC_GOT16
9172 || r_type
== elfcpp::R_PPC64_GOT16_DS
)
9173 ? GOT_TYPE_SMALL
: GOT_TYPE_STANDARD
);
9175 got
= target
->got_section(symtab
, layout
, got_type
);
9176 if (gsym
->final_value_is_known())
9179 && (size
== 32 || target
->abiversion() >= 2))
9180 got
->add_global_plt(gsym
, got_type
, addend
);
9182 got
->add_global(gsym
, got_type
, addend
);
9184 else if (!gsym
->has_got_offset(got_type
, addend
))
9186 // If we are generating a shared object or a pie, this
9187 // symbol's GOT entry will be set by a dynamic relocation.
9188 unsigned int off
= got
->add_constant(0);
9189 gsym
->set_got_offset(got_type
, off
, addend
);
9191 Reloc_section
* rela_dyn
9192 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
9194 if (gsym
->can_use_relative_reloc(false)
9196 || target
->abiversion() >= 2)
9197 && gsym
->visibility() == elfcpp::STV_PROTECTED
9198 && parameters
->options().shared()))
9200 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
9201 : elfcpp::R_POWERPC_RELATIVE
);
9202 rela_dyn
->add_global_relative(gsym
, dynrel
, got
, off
,
9207 unsigned int dynrel
= elfcpp::R_POWERPC_GLOB_DAT
;
9208 rela_dyn
->add_global(gsym
, dynrel
, got
, off
, addend
);
9214 case elfcpp::R_PPC64_TOC16
:
9215 case elfcpp::R_PPC64_TOC16_LO
:
9216 case elfcpp::R_PPC64_TOC16_HI
:
9217 case elfcpp::R_PPC64_TOC16_HA
:
9218 case elfcpp::R_PPC64_TOC16_DS
:
9219 case elfcpp::R_PPC64_TOC16_LO_DS
:
9220 // We need a GOT section.
9221 target
->got_section(symtab
, layout
, GOT_TYPE_SMALL
);
9224 case elfcpp::R_PPC64_GOT_TLSGD_PCREL34
:
9225 case elfcpp::R_POWERPC_GOT_TLSGD16
:
9226 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
9227 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
9228 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
9230 bool final
= gsym
->final_value_is_known();
9231 tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
9232 if (tls_type
== tls::TLSOPT_NONE
)
9234 Got_type got_type
= ((size
== 32
9235 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
)
9236 ? GOT_TYPE_SMALL_TLSGD
: GOT_TYPE_TLSGD
);
9237 Output_data_got_powerpc
<size
, big_endian
>* got
9238 = target
->got_section(symtab
, layout
, got_type
);
9239 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
9240 uint64_t addend
= size
== 32 ? 0 : reloc
.get_r_addend();
9241 got
->add_global_pair_with_rel(gsym
, got_type
, rela_dyn
,
9242 elfcpp::R_POWERPC_DTPMOD
,
9243 elfcpp::R_POWERPC_DTPREL
,
9246 else if (tls_type
== tls::TLSOPT_TO_IE
)
9248 Got_type got_type
= ((size
== 32
9249 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
)
9250 ? GOT_TYPE_SMALL_TPREL
: GOT_TYPE_TPREL
);
9251 if (!gsym
->has_got_offset(got_type
))
9253 Output_data_got_powerpc
<size
, big_endian
>* got
9254 = target
->got_section(symtab
, layout
, got_type
);
9255 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
9256 uint64_t addend
= size
== 32 ? 0 : reloc
.get_r_addend();
9257 if (gsym
->is_undefined()
9258 || gsym
->is_from_dynobj())
9260 got
->add_global_with_rel(gsym
, got_type
, rela_dyn
,
9261 elfcpp::R_POWERPC_TPREL
, addend
);
9265 unsigned int off
= got
->add_constant(0);
9266 gsym
->set_got_offset(got_type
, off
);
9267 unsigned int dynrel
= elfcpp::R_POWERPC_TPREL
;
9268 rela_dyn
->add_symbolless_global_addend(gsym
, dynrel
,
9273 else if (tls_type
== tls::TLSOPT_TO_LE
)
9275 // no GOT relocs needed for Local Exec.
9282 case elfcpp::R_PPC64_GOT_TLSLD_PCREL34
:
9283 case elfcpp::R_POWERPC_GOT_TLSLD16
:
9284 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
9285 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
9286 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
9288 tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
9289 if (tls_type
== tls::TLSOPT_NONE
)
9290 target
->tlsld_got_offset(symtab
, layout
, object
);
9291 else if (tls_type
== tls::TLSOPT_TO_LE
)
9293 // no GOT relocs needed for Local Exec.
9294 if (parameters
->options().emit_relocs())
9296 Output_section
* os
= layout
->tls_segment()->first_section();
9297 gold_assert(os
!= NULL
);
9298 os
->set_needs_symtab_index();
9306 case elfcpp::R_PPC64_GOT_DTPREL_PCREL34
:
9307 case elfcpp::R_POWERPC_GOT_DTPREL16
:
9308 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
9309 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
9310 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
9312 Got_type got_type
= ((size
== 32
9313 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16
)
9314 ? GOT_TYPE_SMALL_DTPREL
: GOT_TYPE_DTPREL
);
9315 Output_data_got_powerpc
<size
, big_endian
>* got
9316 = target
->got_section(symtab
, layout
, got_type
);
9317 uint64_t addend
= size
== 32 ? 0 : reloc
.get_r_addend();
9318 if (!gsym
->final_value_is_known()
9319 && (gsym
->is_from_dynobj()
9320 || gsym
->is_undefined()
9321 || gsym
->is_preemptible()))
9322 got
->add_global_with_rel(gsym
, got_type
,
9323 target
->rela_dyn_section(layout
),
9324 elfcpp::R_POWERPC_DTPREL
, addend
);
9326 got
->add_global_tls(gsym
, got_type
, addend
);
9330 case elfcpp::R_PPC64_GOT_TPREL_PCREL34
:
9331 case elfcpp::R_POWERPC_GOT_TPREL16
:
9332 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
9333 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
9334 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
9336 bool final
= gsym
->final_value_is_known();
9337 tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
9338 if (tls_type
== tls::TLSOPT_NONE
)
9340 Got_type got_type
= ((size
== 32
9341 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16
)
9342 ? GOT_TYPE_SMALL_TPREL
: GOT_TYPE_TPREL
);
9343 if (!gsym
->has_got_offset(got_type
))
9345 Output_data_got_powerpc
<size
, big_endian
>* got
9346 = target
->got_section(symtab
, layout
, got_type
);
9347 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
9348 uint64_t addend
= size
== 32 ? 0 : reloc
.get_r_addend();
9349 if (gsym
->is_undefined()
9350 || gsym
->is_from_dynobj())
9352 got
->add_global_with_rel(gsym
, got_type
, rela_dyn
,
9353 elfcpp::R_POWERPC_TPREL
, addend
);
9357 unsigned int off
= got
->add_constant(0);
9358 gsym
->set_got_offset(got_type
, off
);
9359 unsigned int dynrel
= elfcpp::R_POWERPC_TPREL
;
9360 rela_dyn
->add_symbolless_global_addend(gsym
, dynrel
,
9365 else if (tls_type
== tls::TLSOPT_TO_LE
)
9367 // no GOT relocs needed for Local Exec.
9375 unsupported_reloc_global(object
, r_type
, gsym
);
9380 && parameters
->options().toc_optimize())
9382 if (data_shndx
== ppc_object
->toc_shndx())
9385 if (r_type
!= elfcpp::R_PPC64_ADDR64
9386 || (is_ifunc
&& target
->abiversion() < 2))
9388 else if (parameters
->options().output_is_position_independent()
9389 && (is_ifunc
|| gsym
->is_absolute() || gsym
->is_undefined()))
9392 ppc_object
->set_no_toc_opt(reloc
.get_r_offset());
9395 enum {no_check
, check_lo
, check_ha
} insn_check
;
9399 insn_check
= no_check
;
9402 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
9403 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
9404 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
9405 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
9406 case elfcpp::R_POWERPC_GOT16_HA
:
9407 case elfcpp::R_PPC64_TOC16_HA
:
9408 insn_check
= check_ha
;
9411 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
9412 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
9413 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
9414 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
9415 case elfcpp::R_POWERPC_GOT16_LO
:
9416 case elfcpp::R_PPC64_GOT16_LO_DS
:
9417 case elfcpp::R_PPC64_TOC16_LO
:
9418 case elfcpp::R_PPC64_TOC16_LO_DS
:
9419 insn_check
= check_lo
;
9423 section_size_type slen
;
9424 const unsigned char* view
= NULL
;
9425 if (insn_check
!= no_check
)
9427 view
= ppc_object
->section_contents(data_shndx
, &slen
, false);
9428 section_size_type off
=
9429 convert_to_section_size_type(reloc
.get_r_offset()) & -4;
9432 uint32_t insn
= elfcpp::Swap
<32, big_endian
>::readval(view
+ off
);
9433 if (insn_check
== check_lo
9434 ? !ok_lo_toc_insn(insn
, r_type
)
9435 : ((insn
& ((0x3f << 26) | 0x1f << 16))
9436 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9438 ppc_object
->set_no_toc_opt();
9439 gold_warning(_("%s: toc optimization is not supported "
9440 "for %#08x instruction"),
9441 ppc_object
->name().c_str(), insn
);
9450 case elfcpp::R_PPC64_TOC16
:
9451 case elfcpp::R_PPC64_TOC16_LO
:
9452 case elfcpp::R_PPC64_TOC16_HI
:
9453 case elfcpp::R_PPC64_TOC16_HA
:
9454 case elfcpp::R_PPC64_TOC16_DS
:
9455 case elfcpp::R_PPC64_TOC16_LO_DS
:
9456 if (gsym
->source() == Symbol::FROM_OBJECT
9457 && !gsym
->object()->is_dynamic())
9459 Powerpc_relobj
<size
, big_endian
>* sym_object
9460 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(gsym
->object());
9462 unsigned int shndx
= gsym
->shndx(&is_ordinary
);
9463 if (shndx
== sym_object
->toc_shndx())
9465 Sized_symbol
<size
>* sym
= symtab
->get_sized_symbol
<size
>(gsym
);
9466 Address dst_off
= sym
->value() + reloc
.get_r_addend();
9467 if (dst_off
< sym_object
->section_size(shndx
))
9470 if (r_type
== elfcpp::R_PPC64_TOC16_HA
)
9472 else if (r_type
== elfcpp::R_PPC64_TOC16_LO_DS
)
9474 // Need to check that the insn is a ld
9476 view
= ppc_object
->section_contents(data_shndx
,
9479 section_size_type off
=
9480 (convert_to_section_size_type(reloc
.get_r_offset())
9481 + (big_endian
? -2 : 3));
9483 && (view
[off
] & (0x3f << 2)) == (58u << 2))
9487 sym_object
->set_no_toc_opt(dst_off
);
9499 case elfcpp::R_PPC_LOCAL24PC
:
9500 if (strcmp(gsym
->name(), "_GLOBAL_OFFSET_TABLE_") == 0)
9501 gold_error(_("%s: unsupported -mbss-plt code"),
9502 ppc_object
->name().c_str());
9511 case elfcpp::R_POWERPC_GOT_TLSLD16
:
9512 case elfcpp::R_POWERPC_GOT_TLSGD16
:
9513 case elfcpp::R_POWERPC_GOT_TPREL16
:
9514 case elfcpp::R_POWERPC_GOT_DTPREL16
:
9515 case elfcpp::R_POWERPC_GOT16
:
9516 case elfcpp::R_PPC64_GOT16_DS
:
9517 case elfcpp::R_PPC64_TOC16
:
9518 case elfcpp::R_PPC64_TOC16_DS
:
9519 ppc_object
->set_has_small_toc_reloc();
9527 case elfcpp::R_PPC64_TPREL16_DS
:
9528 case elfcpp::R_PPC64_TPREL16_LO_DS
:
9529 case elfcpp::R_PPC64_TPREL16_HIGH
:
9530 case elfcpp::R_PPC64_TPREL16_HIGHA
:
9531 case elfcpp::R_PPC64_TPREL16_HIGHER
:
9532 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
9533 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
9534 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
9535 case elfcpp::R_PPC64_TPREL34
:
9539 case elfcpp::R_POWERPC_TPREL16
:
9540 case elfcpp::R_POWERPC_TPREL16_LO
:
9541 case elfcpp::R_POWERPC_TPREL16_HI
:
9542 case elfcpp::R_POWERPC_TPREL16_HA
:
9543 layout
->set_has_static_tls();
9551 case elfcpp::R_POWERPC_TPREL16_HA
:
9552 if (target
->tprel_opt())
9554 section_size_type slen
;
9555 const unsigned char* view
= NULL
;
9556 view
= ppc_object
->section_contents(data_shndx
, &slen
, false);
9557 section_size_type off
9558 = convert_to_section_size_type(reloc
.get_r_offset()) & -4;
9561 uint32_t insn
= elfcpp::Swap
<32, big_endian
>::readval(view
+ off
);
9562 if ((insn
& ((0x3fu
<< 26) | 0x1f << 16))
9563 != ((15u << 26) | ((size
== 32 ? 2 : 13) << 16)))
9564 target
->set_no_tprel_opt();
9569 case elfcpp::R_PPC64_TPREL16_HIGH
:
9570 case elfcpp::R_PPC64_TPREL16_HIGHA
:
9571 case elfcpp::R_PPC64_TPREL16_HIGHER
:
9572 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
9573 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
9574 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
9578 case elfcpp::R_POWERPC_TPREL16_HI
:
9579 target
->set_no_tprel_opt();
9587 case elfcpp::R_PPC64_D34
:
9588 case elfcpp::R_PPC64_D34_LO
:
9589 case elfcpp::R_PPC64_D34_HI30
:
9590 case elfcpp::R_PPC64_D34_HA30
:
9591 case elfcpp::R_PPC64_D28
:
9592 case elfcpp::R_PPC64_PCREL34
:
9593 case elfcpp::R_PPC64_PCREL28
:
9594 case elfcpp::R_PPC64_TPREL34
:
9595 case elfcpp::R_PPC64_DTPREL34
:
9596 case elfcpp::R_PPC64_PLT_PCREL34
:
9597 case elfcpp::R_PPC64_PLT_PCREL34_NOTOC
:
9598 case elfcpp::R_PPC64_GOT_PCREL34
:
9599 case elfcpp::R_PPC64_GOT_TLSGD_PCREL34
:
9600 case elfcpp::R_PPC64_GOT_TLSLD_PCREL34
:
9601 case elfcpp::R_PPC64_GOT_DTPREL_PCREL34
:
9602 case elfcpp::R_PPC64_GOT_TPREL_PCREL34
:
9603 target
->set_power10_relocs();
9610 // Process relocations for gc.
9612 template<int size
, bool big_endian
>
9614 Target_powerpc
<size
, big_endian
>::gc_process_relocs(
9615 Symbol_table
* symtab
,
9617 Sized_relobj_file
<size
, big_endian
>* object
,
9618 unsigned int data_shndx
,
9620 const unsigned char* prelocs
,
9622 Output_section
* output_section
,
9623 bool needs_special_offset_handling
,
9624 size_t local_symbol_count
,
9625 const unsigned char* plocal_symbols
)
9627 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
9628 typedef gold::Default_classify_reloc
<elfcpp::SHT_RELA
, size
, big_endian
>
9631 Powerpc_relobj
<size
, big_endian
>* ppc_object
9632 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
9634 ppc_object
->set_opd_valid();
9635 if (size
== 64 && data_shndx
== ppc_object
->opd_shndx())
9637 typename Powerpc_relobj
<size
, big_endian
>::Access_from::iterator p
;
9638 for (p
= ppc_object
->access_from_map()->begin();
9639 p
!= ppc_object
->access_from_map()->end();
9642 Address dst_off
= p
->first
;
9643 unsigned int dst_indx
= ppc_object
->get_opd_ent(dst_off
);
9644 typename Powerpc_relobj
<size
, big_endian
>::Section_refs::iterator s
;
9645 for (s
= p
->second
.begin(); s
!= p
->second
.end(); ++s
)
9647 Relobj
* src_obj
= s
->first
;
9648 unsigned int src_indx
= s
->second
;
9649 symtab
->gc()->add_reference(src_obj
, src_indx
,
9650 ppc_object
, dst_indx
);
9654 ppc_object
->access_from_map()->clear();
9655 ppc_object
->process_gc_mark(symtab
);
9656 // Don't look at .opd relocs as .opd will reference everything.
9660 gold::gc_process_relocs
<size
, big_endian
, Powerpc
, Scan
, Classify_reloc
>(
9669 needs_special_offset_handling
,
9674 // Handle target specific gc actions when adding a gc reference from
9675 // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX
9676 // and DST_OFF. For powerpc64, this adds a referenc to the code
9677 // section of a function descriptor.
9679 template<int size
, bool big_endian
>
9681 Target_powerpc
<size
, big_endian
>::do_gc_add_reference(
9682 Symbol_table
* symtab
,
9684 unsigned int src_shndx
,
9686 unsigned int dst_shndx
,
9687 Address dst_off
) const
9689 if (size
!= 64 || dst_obj
->is_dynamic())
9692 Powerpc_relobj
<size
, big_endian
>* ppc_object
9693 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(dst_obj
);
9694 if (dst_shndx
!= 0 && dst_shndx
== ppc_object
->opd_shndx())
9696 if (ppc_object
->opd_valid())
9698 dst_shndx
= ppc_object
->get_opd_ent(dst_off
);
9699 symtab
->gc()->add_reference(src_obj
, src_shndx
, dst_obj
, dst_shndx
);
9703 // If we haven't run scan_opd_relocs, we must delay
9704 // processing this function descriptor reference.
9705 ppc_object
->add_reference(src_obj
, src_shndx
, dst_off
);
9710 // Add any special sections for this symbol to the gc work list.
9711 // For powerpc64, this adds the code section of a function
9714 template<int size
, bool big_endian
>
9716 Target_powerpc
<size
, big_endian
>::do_gc_mark_symbol(
9717 Symbol_table
* symtab
,
9720 if (size
== 64 && sym
->object()->pluginobj() == NULL
)
9722 Powerpc_relobj
<size
, big_endian
>* ppc_object
9723 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(sym
->object());
9725 unsigned int shndx
= sym
->shndx(&is_ordinary
);
9726 if (is_ordinary
&& shndx
!= 0 && shndx
== ppc_object
->opd_shndx())
9728 Sized_symbol
<size
>* gsym
= symtab
->get_sized_symbol
<size
>(sym
);
9729 Address dst_off
= gsym
->value();
9730 if (ppc_object
->opd_valid())
9732 unsigned int dst_indx
= ppc_object
->get_opd_ent(dst_off
);
9733 symtab
->gc()->worklist().push_back(Section_id(ppc_object
,
9737 ppc_object
->add_gc_mark(dst_off
);
9742 // For a symbol location in .opd, set LOC to the location of the
9745 template<int size
, bool big_endian
>
9747 Target_powerpc
<size
, big_endian
>::do_function_location(
9748 Symbol_location
* loc
) const
9750 if (size
== 64 && loc
->shndx
!= 0)
9752 if (loc
->object
->is_dynamic())
9754 Powerpc_dynobj
<size
, big_endian
>* ppc_object
9755 = static_cast<Powerpc_dynobj
<size
, big_endian
>*>(loc
->object
);
9756 if (loc
->shndx
== ppc_object
->opd_shndx())
9759 Address off
= loc
->offset
- ppc_object
->opd_address();
9760 loc
->shndx
= ppc_object
->get_opd_ent(off
, &dest_off
);
9761 loc
->offset
= dest_off
;
9766 const Powerpc_relobj
<size
, big_endian
>* ppc_object
9767 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>(loc
->object
);
9768 if (loc
->shndx
== ppc_object
->opd_shndx())
9771 loc
->shndx
= ppc_object
->get_opd_ent(loc
->offset
, &dest_off
);
9772 loc
->offset
= dest_off
;
9778 // FNOFFSET in section SHNDX in OBJECT is the start of a function
9779 // compiled with -fsplit-stack. The function calls non-split-stack
9780 // code. Change the function to ensure it has enough stack space to
9781 // call some random function.
9783 template<int size
, bool big_endian
>
9785 Target_powerpc
<size
, big_endian
>::do_calls_non_split(
9788 section_offset_type fnoffset
,
9789 section_size_type fnsize
,
9790 const unsigned char* prelocs
,
9792 unsigned char* view
,
9793 section_size_type view_size
,
9795 std::string
* to
) const
9797 // 32-bit not supported.
9801 Target::do_calls_non_split(object
, shndx
, fnoffset
, fnsize
,
9802 prelocs
, reloc_count
, view
, view_size
,
9807 // The function always starts with
9808 // ld %r0,-0x7000-64(%r13) # tcbhead_t.__private_ss
9809 // addis %r12,%r1,-allocate@ha
9810 // addi %r12,%r12,-allocate@l
9812 // but note that the addis or addi may be replaced with a nop
9814 unsigned char *entry
= view
+ fnoffset
;
9815 uint32_t insn
= elfcpp::Swap
<32, big_endian
>::readval(entry
);
9817 if ((insn
& 0xffff0000) == addis_2_12
)
9819 /* Skip ELFv2 global entry code. */
9821 insn
= elfcpp::Swap
<32, big_endian
>::readval(entry
);
9824 unsigned char *pinsn
= entry
;
9826 const uint32_t ld_private_ss
= 0xe80d8fc0;
9827 if (insn
== ld_private_ss
)
9829 int32_t allocate
= 0;
9833 insn
= elfcpp::Swap
<32, big_endian
>::readval(pinsn
);
9834 if ((insn
& 0xffff0000) == addis_12_1
)
9835 allocate
+= (insn
& 0xffff) << 16;
9836 else if ((insn
& 0xffff0000) == addi_12_1
9837 || (insn
& 0xffff0000) == addi_12_12
)
9838 allocate
+= ((insn
& 0xffff) ^ 0x8000) - 0x8000;
9839 else if (insn
!= nop
)
9842 if (insn
== cmpld_7_12_0
&& pinsn
== entry
+ 12)
9844 int extra
= parameters
->options().split_stack_adjust_size();
9846 if (allocate
>= 0 || extra
< 0)
9848 object
->error(_("split-stack stack size overflow at "
9849 "section %u offset %0zx"),
9850 shndx
, static_cast<size_t>(fnoffset
));
9854 insn
= addis_12_1
| (((allocate
+ 0x8000) >> 16) & 0xffff);
9855 if (insn
!= addis_12_1
)
9857 elfcpp::Swap
<32, big_endian
>::writeval(pinsn
, insn
);
9859 insn
= addi_12_12
| (allocate
& 0xffff);
9860 if (insn
!= addi_12_12
)
9862 elfcpp::Swap
<32, big_endian
>::writeval(pinsn
, insn
);
9868 insn
= addi_12_1
| (allocate
& 0xffff);
9869 elfcpp::Swap
<32, big_endian
>::writeval(pinsn
, insn
);
9872 if (pinsn
!= entry
+ 12)
9873 elfcpp::Swap
<32, big_endian
>::writeval(pinsn
, nop
);
9881 if (!object
->has_no_split_stack())
9882 object
->error(_("failed to match split-stack sequence at "
9883 "section %u offset %0zx"),
9884 shndx
, static_cast<size_t>(fnoffset
));
9888 // Scan relocations for a section.
9890 template<int size
, bool big_endian
>
9892 Target_powerpc
<size
, big_endian
>::scan_relocs(
9893 Symbol_table
* symtab
,
9895 Sized_relobj_file
<size
, big_endian
>* object
,
9896 unsigned int data_shndx
,
9897 unsigned int sh_type
,
9898 const unsigned char* prelocs
,
9900 Output_section
* output_section
,
9901 bool needs_special_offset_handling
,
9902 size_t local_symbol_count
,
9903 const unsigned char* plocal_symbols
)
9905 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
9906 typedef gold::Default_classify_reloc
<elfcpp::SHT_RELA
, size
, big_endian
>
9909 if (!this->plt_localentry0_init_
)
9911 bool plt_localentry0
= false;
9913 && this->abiversion() >= 2)
9915 if (parameters
->options().user_set_plt_localentry())
9916 plt_localentry0
= parameters
->options().plt_localentry();
9918 && symtab
->lookup("GLIBC_2.26", NULL
) == NULL
)
9919 gold_warning(_("--plt-localentry is especially dangerous without "
9920 "ld.so support to detect ABI violations"));
9922 this->plt_localentry0_
= plt_localentry0
;
9923 this->plt_localentry0_init_
= true;
9926 if (sh_type
== elfcpp::SHT_REL
)
9928 gold_error(_("%s: unsupported REL reloc section"),
9929 object
->name().c_str());
9933 gold::scan_relocs
<size
, big_endian
, Powerpc
, Scan
, Classify_reloc
>(
9942 needs_special_offset_handling
,
9946 if (this->plt_localentry0_
&& this->power10_relocs_
)
9948 gold_warning(_("--plt-localentry is incompatible with "
9949 "power10 pc-relative code"));
9950 this->plt_localentry0_
= false;
9954 // Functor class for processing the global symbol table.
9955 // Removes symbols defined on discarded opd entries.
9957 template<bool big_endian
>
9958 class Global_symbol_visitor_opd
9961 Global_symbol_visitor_opd()
9965 operator()(Sized_symbol
<64>* sym
)
9967 if (sym
->has_symtab_index()
9968 || sym
->source() != Symbol::FROM_OBJECT
9969 || !sym
->in_real_elf())
9972 if (sym
->object()->is_dynamic())
9975 Powerpc_relobj
<64, big_endian
>* symobj
9976 = static_cast<Powerpc_relobj
<64, big_endian
>*>(sym
->object());
9977 if (symobj
->opd_shndx() == 0)
9981 unsigned int shndx
= sym
->shndx(&is_ordinary
);
9982 if (shndx
== symobj
->opd_shndx()
9983 && symobj
->get_opd_discard(sym
->value()))
9985 sym
->set_undefined();
9986 sym
->set_visibility(elfcpp::STV_DEFAULT
);
9987 sym
->set_is_defined_in_discarded_section();
9988 sym
->set_symtab_index(-1U);
9993 template<int size
, bool big_endian
>
9995 Target_powerpc
<size
, big_endian
>::define_save_restore_funcs(
9997 Symbol_table
* symtab
)
10001 Output_data_save_res
<size
, big_endian
>* savres
10002 = new Output_data_save_res
<size
, big_endian
>(symtab
);
10003 this->savres_section_
= savres
;
10004 layout
->add_output_section_data(".text", elfcpp::SHT_PROGBITS
,
10005 elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
,
10006 savres
, ORDER_TEXT
, false);
10010 // Sort linker created .got section first (for the header), then input
10011 // sections belonging to files using small model code.
10013 template<bool big_endian
>
10014 class Sort_toc_sections
10016 const Output_section_data
*
10017 small_got_section() const
10019 return (static_cast<Target_powerpc
<64, big_endian
>*>(
10020 parameters
->sized_target
<64, big_endian
>())
10021 ->got_section(GOT_TYPE_SMALL
));
10025 rank(const Output_section::Input_section
& isec
) const
10027 if (!isec
.is_input_section())
10029 if (isec
.output_section_data() == this->small_got_section())
10033 if (static_cast<const Powerpc_relobj
<64, big_endian
>*>(isec
.relobj())
10034 ->has_small_toc_reloc())
10041 operator()(const Output_section::Input_section
& is1
,
10042 const Output_section::Input_section
& is2
) const
10044 return rank(is1
) < rank(is2
);
10048 // Finalize the sections.
10050 template<int size
, bool big_endian
>
10052 Target_powerpc
<size
, big_endian
>::do_finalize_sections(
10054 const Input_objects
* input_objects
,
10055 Symbol_table
* symtab
)
10057 if (parameters
->doing_static_link())
10059 // At least some versions of glibc elf-init.o have a strong
10060 // reference to __rela_iplt marker syms. A weak ref would be
10062 if (this->iplt_
!= NULL
)
10064 Reloc_section
* rel
= this->iplt_
->rel_plt();
10065 symtab
->define_in_output_data("__rela_iplt_start", NULL
,
10066 Symbol_table::PREDEFINED
, rel
, 0, 0,
10067 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
10068 elfcpp::STV_HIDDEN
, 0, false, true);
10069 symtab
->define_in_output_data("__rela_iplt_end", NULL
,
10070 Symbol_table::PREDEFINED
, rel
, 0, 0,
10071 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
10072 elfcpp::STV_HIDDEN
, 0, true, true);
10076 symtab
->define_as_constant("__rela_iplt_start", NULL
,
10077 Symbol_table::PREDEFINED
, 0, 0,
10078 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
10079 elfcpp::STV_HIDDEN
, 0, true, false);
10080 symtab
->define_as_constant("__rela_iplt_end", NULL
,
10081 Symbol_table::PREDEFINED
, 0, 0,
10082 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
10083 elfcpp::STV_HIDDEN
, 0, true, false);
10089 typedef Global_symbol_visitor_opd
<big_endian
> Symbol_visitor
;
10090 symtab
->for_all_symbols
<64, Symbol_visitor
>(Symbol_visitor());
10092 if (!parameters
->options().relocatable())
10094 this->define_save_restore_funcs(layout
, symtab
);
10096 // Annoyingly, we need to make these sections now whether or
10097 // not we need them. If we delay until do_relax then we
10098 // need to mess with the relaxation machinery checkpointing.
10099 this->got_section(symtab
, layout
, GOT_TYPE_STANDARD
);
10100 this->make_brlt_section(layout
);
10102 // FIXME, maybe. Here we could run through all the got
10103 // entries in the small got section, removing any duplicates
10104 // found in the big got section and renumbering offsets.
10106 if (parameters
->options().toc_sort())
10108 Output_section
* os
= this->got_
->output_section();
10109 if (os
!= NULL
&& os
->input_sections().size() > 1)
10110 std::stable_sort(os
->input_sections().begin(),
10111 os
->input_sections().end(),
10112 Sort_toc_sections
<big_endian
>());
10117 // Fill in some more dynamic tags.
10118 Output_data_dynamic
* odyn
= layout
->dynamic_data();
10121 const Reloc_section
* rel_plt
= (this->plt_
== NULL
10123 : this->plt_
->rel_plt());
10124 layout
->add_target_dynamic_tags(false, this->plt_
, rel_plt
,
10125 this->rela_dyn_
, true, size
== 32);
10129 if (this->got_
!= NULL
)
10131 this->got_
->finalize_data_size();
10132 odyn
->add_section_plus_offset(elfcpp::DT_PPC_GOT
,
10133 this->got_
, this->got_
->g_o_t());
10135 if (this->has_tls_get_addr_opt_
)
10136 odyn
->add_constant(elfcpp::DT_PPC_OPT
, elfcpp::PPC_OPT_TLS
);
10140 if (this->glink_
!= NULL
)
10142 this->glink_
->finalize_data_size();
10143 odyn
->add_section_plus_offset(elfcpp::DT_PPC64_GLINK
,
10145 (this->glink_
->pltresolve_size()
10148 if (this->has_localentry0_
|| this->has_tls_get_addr_opt_
)
10149 odyn
->add_constant(elfcpp::DT_PPC64_OPT
,
10150 ((this->has_localentry0_
10151 ? elfcpp::PPC64_OPT_LOCALENTRY
: 0)
10152 | (this->has_tls_get_addr_opt_
10153 ? elfcpp::PPC64_OPT_TLS
: 0)));
10157 // Emit any relocs we saved in an attempt to avoid generating COPY
10159 if (this->copy_relocs_
.any_saved_relocs())
10160 this->copy_relocs_
.emit(this->rela_dyn_section(layout
));
10162 for (Input_objects::Relobj_iterator p
= input_objects
->relobj_begin();
10163 p
!= input_objects
->relobj_end();
10166 Powerpc_relobj
<size
, big_endian
>* ppc_relobj
10167 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(*p
);
10168 if (ppc_relobj
->attributes_section_data())
10169 this->merge_object_attributes(ppc_relobj
,
10170 ppc_relobj
->attributes_section_data());
10172 for (Input_objects::Dynobj_iterator p
= input_objects
->dynobj_begin();
10173 p
!= input_objects
->dynobj_end();
10176 Powerpc_dynobj
<size
, big_endian
>* ppc_dynobj
10177 = static_cast<Powerpc_dynobj
<size
, big_endian
>*>(*p
);
10178 if (ppc_dynobj
->attributes_section_data())
10179 this->merge_object_attributes(ppc_dynobj
,
10180 ppc_dynobj
->attributes_section_data());
10183 // Create a .gnu.attributes section if we have merged any attributes
10185 if (this->attributes_section_data_
!= NULL
10186 && this->attributes_section_data_
->size() != 0)
10188 Output_attributes_section_data
* attributes_section
10189 = new Output_attributes_section_data(*this->attributes_section_data_
);
10190 layout
->add_output_section_data(".gnu.attributes",
10191 elfcpp::SHT_GNU_ATTRIBUTES
, 0,
10192 attributes_section
, ORDER_INVALID
, false);
10196 // Merge object attributes from input file called NAME with those of the
10197 // output. The input object attributes are in the object pointed by PASD.
10199 template<int size
, bool big_endian
>
10201 Target_powerpc
<size
, big_endian
>::merge_object_attributes(
10203 const Attributes_section_data
* pasd
)
10205 // Return if there is no attributes section data.
10209 // Create output object attributes.
10210 if (this->attributes_section_data_
== NULL
)
10211 this->attributes_section_data_
= new Attributes_section_data(NULL
, 0);
10213 const int vendor
= Object_attribute::OBJ_ATTR_GNU
;
10214 const Object_attribute
* in_attr
= pasd
->known_attributes(vendor
);
10215 Object_attribute
* out_attr
10216 = this->attributes_section_data_
->known_attributes(vendor
);
10218 const char* name
= obj
->name().c_str();
10221 const char* second
;
10222 int tag
= elfcpp::Tag_GNU_Power_ABI_FP
;
10223 int in_fp
= in_attr
[tag
].int_value() & 0xf;
10224 int out_fp
= out_attr
[tag
].int_value() & 0xf;
10225 bool warn_only
= obj
->is_dynamic();
10226 if (in_fp
!= out_fp
)
10229 if ((in_fp
& 3) == 0)
10231 else if ((out_fp
& 3) == 0)
10235 out_fp
|= in_fp
& 3;
10236 out_attr
[tag
].set_int_value(out_fp
);
10237 out_attr
[tag
].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL
);
10238 this->last_fp_
= name
;
10241 else if ((out_fp
& 3) != 2 && (in_fp
& 3) == 2)
10243 err
= N_("%s uses hard float, %s uses soft float");
10244 first
= this->last_fp_
;
10247 else if ((out_fp
& 3) == 2 && (in_fp
& 3) != 2)
10249 err
= N_("%s uses hard float, %s uses soft float");
10251 second
= this->last_fp_
;
10253 else if ((out_fp
& 3) == 1 && (in_fp
& 3) == 3)
10255 err
= N_("%s uses double-precision hard float, "
10256 "%s uses single-precision hard float");
10257 first
= this->last_fp_
;
10260 else if ((out_fp
& 3) == 3 && (in_fp
& 3) == 1)
10262 err
= N_("%s uses double-precision hard float, "
10263 "%s uses single-precision hard float");
10265 second
= this->last_fp_
;
10268 if (err
|| (in_fp
& 0xc) == 0)
10270 else if ((out_fp
& 0xc) == 0)
10274 out_fp
|= in_fp
& 0xc;
10275 out_attr
[tag
].set_int_value(out_fp
);
10276 out_attr
[tag
].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL
);
10277 this->last_ld_
= name
;
10280 else if ((out_fp
& 0xc) != 2 * 4 && (in_fp
& 0xc) == 2 * 4)
10282 err
= N_("%s uses 64-bit long double, %s uses 128-bit long double");
10284 second
= this->last_ld_
;
10286 else if ((in_fp
& 0xc) != 2 * 4 && (out_fp
& 0xc) == 2 * 4)
10288 err
= N_("%s uses 64-bit long double, %s uses 128-bit long double");
10289 first
= this->last_ld_
;
10292 else if ((out_fp
& 0xc) == 1 * 4 && (in_fp
& 0xc) == 3 * 4)
10294 err
= N_("%s uses IBM long double, %s uses IEEE long double");
10295 first
= this->last_ld_
;
10298 else if ((out_fp
& 0xc) == 3 * 4 && (in_fp
& 0xc) == 1 * 4)
10300 err
= N_("%s uses IBM long double, %s uses IEEE long double");
10302 second
= this->last_ld_
;
10307 if (parameters
->options().warn_mismatch())
10310 gold_warning(_(err
), first
, second
);
10312 gold_error(_(err
), first
, second
);
10314 // Arrange for this attribute to be deleted. It's better to
10315 // say "don't know" about a file than to wrongly claim compliance.
10317 out_attr
[tag
].set_type(0);
10323 tag
= elfcpp::Tag_GNU_Power_ABI_Vector
;
10324 int in_vec
= in_attr
[tag
].int_value() & 3;
10325 int out_vec
= out_attr
[tag
].int_value() & 3;
10326 if (in_vec
!= out_vec
)
10331 else if (out_vec
== 0)
10334 out_attr
[tag
].set_int_value(out_vec
);
10335 out_attr
[tag
].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL
);
10336 this->last_vec_
= name
;
10338 // For now, allow generic to transition to AltiVec or SPE
10339 // without a warning. If GCC marked files with their stack
10340 // alignment and used don't-care markings for files which are
10341 // not affected by the vector ABI, we could warn about this
10343 else if (in_vec
== 1)
10345 else if (out_vec
== 1)
10348 out_attr
[tag
].set_int_value(out_vec
);
10349 out_attr
[tag
].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL
);
10350 this->last_vec_
= name
;
10352 else if (out_vec
< in_vec
)
10354 err
= N_("%s uses AltiVec vector ABI, %s uses SPE vector ABI");
10355 first
= this->last_vec_
;
10358 else if (out_vec
> in_vec
)
10360 err
= N_("%s uses AltiVec vector ABI, %s uses SPE vector ABI");
10362 second
= this->last_vec_
;
10366 if (parameters
->options().warn_mismatch())
10367 gold_error(_(err
), first
, second
);
10368 out_attr
[tag
].set_type(0);
10372 tag
= elfcpp::Tag_GNU_Power_ABI_Struct_Return
;
10373 int in_struct
= in_attr
[tag
].int_value() & 3;
10374 int out_struct
= out_attr
[tag
].int_value() & 3;
10375 if (in_struct
!= out_struct
)
10378 if (in_struct
== 0 || in_struct
== 3)
10380 else if (out_struct
== 0)
10382 out_struct
= in_struct
;
10383 out_attr
[tag
].set_int_value(out_struct
);
10384 out_attr
[tag
].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL
);
10385 this->last_struct_
= name
;
10387 else if (out_struct
< in_struct
)
10389 err
= N_("%s uses r3/r4 for small structure returns, "
10391 first
= this->last_struct_
;
10394 else if (out_struct
> in_struct
)
10396 err
= N_("%s uses r3/r4 for small structure returns, "
10399 second
= this->last_struct_
;
10403 if (parameters
->options().warn_mismatch())
10404 gold_error(_(err
), first
, second
);
10405 out_attr
[tag
].set_type(0);
10410 // Merge Tag_compatibility attributes and any common GNU ones.
10411 this->attributes_section_data_
->merge(name
, pasd
);
10414 // Emit any saved relocs, and mark toc entries using any of these
10415 // relocs as not optimizable.
10417 template<int sh_type
, int size
, bool big_endian
>
10419 Powerpc_copy_relocs
<sh_type
, size
, big_endian
>::emit(
10420 Output_data_reloc
<sh_type
, true, size
, big_endian
>* reloc_section
)
10423 && parameters
->options().toc_optimize())
10425 for (typename Copy_relocs
<sh_type
, size
, big_endian
>::
10426 Copy_reloc_entries::iterator p
= this->entries_
.begin();
10427 p
!= this->entries_
.end();
10430 typename Copy_relocs
<sh_type
, size
, big_endian
>::Copy_reloc_entry
&
10433 // If the symbol is no longer defined in a dynamic object,
10434 // then we emitted a COPY relocation. If it is still
10435 // dynamic then we'll need dynamic relocations and thus
10436 // can't optimize toc entries.
10437 if (entry
.sym_
->is_from_dynobj())
10439 Powerpc_relobj
<size
, big_endian
>* ppc_object
10440 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(entry
.relobj_
);
10441 if (entry
.shndx_
== ppc_object
->toc_shndx())
10442 ppc_object
->set_no_toc_opt(entry
.address_
);
10447 Copy_relocs
<sh_type
, size
, big_endian
>::emit(reloc_section
);
10450 // Return the value to use for a branch relocation.
10452 template<int size
, bool big_endian
>
10454 Target_powerpc
<size
, big_endian
>::symval_for_branch(
10455 const Symbol_table
* symtab
,
10456 const Sized_symbol
<size
>* gsym
,
10457 Powerpc_relobj
<size
, big_endian
>* object
,
10459 unsigned int *dest_shndx
)
10461 if (size
== 32 || this->abiversion() >= 2)
10462 gold_unreachable();
10465 // If the symbol is defined in an opd section, ie. is a function
10466 // descriptor, use the function descriptor code entry address
10467 Powerpc_relobj
<size
, big_endian
>* symobj
= object
;
10469 && (gsym
->source() != Symbol::FROM_OBJECT
10470 || gsym
->object()->is_dynamic()))
10473 symobj
= static_cast<Powerpc_relobj
<size
, big_endian
>*>(gsym
->object());
10474 unsigned int shndx
= symobj
->opd_shndx();
10477 Address opd_addr
= symobj
->get_output_section_offset(shndx
);
10478 if (opd_addr
== invalid_address
)
10480 opd_addr
+= symobj
->output_section_address(shndx
);
10481 if (*value
>= opd_addr
&& *value
< opd_addr
+ symobj
->section_size(shndx
))
10484 *dest_shndx
= symobj
->get_opd_ent(*value
- opd_addr
, &sec_off
);
10485 if (symtab
->is_section_folded(symobj
, *dest_shndx
))
10488 = symtab
->icf()->get_folded_section(symobj
, *dest_shndx
);
10489 symobj
= static_cast<Powerpc_relobj
<size
, big_endian
>*>(folded
.first
);
10490 *dest_shndx
= folded
.second
;
10492 Address sec_addr
= symobj
->get_output_section_offset(*dest_shndx
);
10493 if (sec_addr
== invalid_address
)
10496 sec_addr
+= symobj
->output_section(*dest_shndx
)->address();
10497 *value
= sec_addr
+ sec_off
;
10504 relative_value_is_known(const Sized_symbol
<size
>* gsym
)
10506 if (gsym
->type() == elfcpp::STT_GNU_IFUNC
)
10509 if (gsym
->is_from_dynobj()
10510 || gsym
->is_undefined()
10511 || gsym
->is_preemptible())
10514 if (gsym
->is_absolute())
10515 return !parameters
->options().output_is_position_independent();
10522 relative_value_is_known(const Symbol_value
<size
>* psymval
)
10524 if (psymval
->is_ifunc_symbol())
10528 unsigned int shndx
= psymval
->input_shndx(&is_ordinary
);
10530 return is_ordinary
&& shndx
!= elfcpp::SHN_UNDEF
;
10533 // PCREL_OPT in one instance flags to the linker that a pair of insns:
10534 // pld ra,symbol@got@pcrel
10535 // load/store rt,0(ra)
10537 // pla ra,symbol@pcrel
10538 // load/store rt,0(ra)
10539 // may be translated to
10540 // pload/pstore rt,symbol@pcrel
10542 // This function returns true if the optimization is possible, placing
10543 // the prefix insn in *PINSN1 and a NOP in *PINSN2.
10545 // On entry to this function, the linker has already determined that
10546 // the pld can be replaced with pla: *PINSN1 is that pla insn,
10547 // while *PINSN2 is the second instruction.
10550 xlate_pcrel_opt(uint64_t *pinsn1
, uint64_t *pinsn2
)
10552 uint32_t insn2
= *pinsn2
>> 32;
10555 // Check that regs match.
10556 if (((insn2
>> 16) & 31) != ((*pinsn1
>> 21) & 31))
10559 switch ((insn2
>> 26) & 63)
10575 // These are the PMLS cases, where we just need to tack a prefix
10576 // on the insn. Check that the D field is zero.
10577 if ((insn2
& 0xffff) != 0)
10579 i1new
= ((1ULL << 58) | (2ULL << 56) | (1ULL << 52)
10580 | (insn2
& ((63ULL << 26) | (31ULL << 21))));
10583 case 58: // lwa, ld
10584 if ((insn2
& 0xfffd) != 0)
10586 i1new
= ((1ULL << 58) | (1ULL << 52)
10587 | (insn2
& 2 ? 41ULL << 26 : 57ULL << 26)
10588 | (insn2
& (31ULL << 21)));
10591 case 57: // lxsd, lxssp
10592 if ((insn2
& 0xfffc) != 0 || (insn2
& 3) < 2)
10594 i1new
= ((1ULL << 58) | (1ULL << 52)
10595 | ((40ULL | (insn2
& 3)) << 26)
10596 | (insn2
& (31ULL << 21)));
10599 case 61: // stxsd, stxssp, lxv, stxv
10600 if ((insn2
& 3) == 0)
10602 else if ((insn2
& 3) >= 2)
10604 if ((insn2
& 0xfffc) != 0)
10606 i1new
= ((1ULL << 58) | (1ULL << 52)
10607 | ((44ULL | (insn2
& 3)) << 26)
10608 | (insn2
& (31ULL << 21)));
10612 if ((insn2
& 0xfff0) != 0)
10614 i1new
= ((1ULL << 58) | (1ULL << 52)
10615 | ((50ULL | (insn2
& 4) | ((insn2
& 8) >> 3)) << 26)
10616 | (insn2
& (31ULL << 21)));
10621 if ((insn2
& 0xffff) != 0)
10623 i1new
= ((1ULL << 58) | (1ULL << 52)
10624 | (insn2
& ((63ULL << 26) | (31ULL << 21))));
10627 case 62: // std, stq
10628 if ((insn2
& 0xfffd) != 0)
10630 i1new
= ((1ULL << 58) | (1ULL << 52)
10631 | ((insn2
& 2) == 0 ? 61ULL << 26 : 60ULL << 26)
10632 | (insn2
& (31ULL << 21)));
10637 *pinsn2
= (uint64_t) nop
<< 32;
10641 // Perform a relocation.
10643 template<int size
, bool big_endian
>
10645 Target_powerpc
<size
, big_endian
>::Relocate::relocate(
10646 const Relocate_info
<size
, big_endian
>* relinfo
,
10648 Target_powerpc
* target
,
10649 Output_section
* os
,
10651 const unsigned char* preloc
,
10652 const Sized_symbol
<size
>* gsym
,
10653 const Symbol_value
<size
>* psymval
,
10654 unsigned char* view
,
10656 section_size_type view_size
)
10658 typedef Powerpc_relocate_functions
<size
, big_endian
> Reloc
;
10659 typedef typename
elfcpp::Swap
<32, big_endian
>::Valtype Insn
;
10660 typedef typename
elfcpp::Rela
<size
, big_endian
> Reltype
;
10665 if (target
->replace_tls_get_addr(gsym
))
10666 gsym
= static_cast<const Sized_symbol
<size
>*>(target
->tls_get_addr_opt());
10668 const elfcpp::Rela
<size
, big_endian
> rela(preloc
);
10669 unsigned int r_type
= elfcpp::elf_r_type
<size
>(rela
.get_r_info());
10670 Powerpc_relobj
<size
, big_endian
>* const object
10671 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(relinfo
->object
);
10672 switch (this->maybe_skip_tls_get_addr_call(target
, r_type
, gsym
))
10674 case Track_tls::NOT_EXPECTED
:
10675 // No warning. This will result in really old code without tls
10676 // marker relocs being mis-optimised, but there shouldn't be too
10677 // much of that code around. The problem with warning is that
10678 // glibc and libphobos both construct direct calls to
10679 // __tls_get_addr in a way that is harmless.
10681 case Track_tls::EXPECTED
:
10682 // We have already complained.
10684 case Track_tls::SKIP
:
10685 if (is_plt16_reloc
<size
>(r_type
)
10686 || r_type
== elfcpp::R_POWERPC_PLTSEQ
10687 || r_type
== elfcpp::R_PPC64_PLTSEQ_NOTOC
)
10689 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
10690 elfcpp::Swap
<32, big_endian
>::writeval(iview
, nop
);
10692 else if (size
== 64 && r_type
== elfcpp::R_POWERPC_PLTCALL
)
10694 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
10695 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1, nop
);
10697 else if (size
== 64 && (r_type
== elfcpp::R_PPC64_PLT_PCREL34
10698 || r_type
== elfcpp::R_PPC64_PLT_PCREL34_NOTOC
))
10700 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
10701 elfcpp::Swap
<32, big_endian
>::writeval(iview
, pnop
>> 32);
10702 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1, pnop
& 0xffffffff);
10705 case Track_tls::NORMAL
:
10709 // Offset from start of insn to d-field reloc.
10710 const int d_offset
= big_endian
? 2 : 0;
10713 bool has_stub_value
= false;
10714 bool localentry0
= false;
10715 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
10716 bool pltcall_to_direct
= false;
10718 if (is_plt16_reloc
<size
>(r_type
)
10719 || r_type
== elfcpp::R_PPC64_PLT_PCREL34
10720 || r_type
== elfcpp::R_PPC64_PLT_PCREL34_NOTOC
10721 || r_type
== elfcpp::R_POWERPC_PLTSEQ
10722 || r_type
== elfcpp::R_PPC64_PLTSEQ_NOTOC
10723 || r_type
== elfcpp::R_POWERPC_PLTCALL
10724 || r_type
== elfcpp::R_PPC64_PLTCALL_NOTOC
)
10726 // It would be possible to replace inline plt calls with direct
10727 // calls if the PLTCALL is in range. The only difficulty is
10728 // that the decision depends on the PLTCALL reloc, and we don't
10729 // know the address of that instruction when processing others
10730 // in the sequence. So the decision needs to be made in
10732 pltcall_to_direct
= !(gsym
!= NULL
10733 ? gsym
->has_plt_offset()
10734 : object
->local_has_plt_offset(r_sym
));
10736 else if ((gsym
!= NULL
10737 ? gsym
->use_plt_offset(Scan::get_reference_flags(r_type
, target
))
10738 : psymval
->is_ifunc_symbol() && object
->local_has_plt_offset(r_sym
))
10739 && !is_got_reloc(r_type
)
10740 && (!psymval
->is_ifunc_symbol()
10741 || Scan::reloc_needs_plt_for_ifunc(target
, object
, r_type
,
10746 && target
->abiversion() >= 2
10747 && !parameters
->options().output_is_position_independent()
10748 && !is_branch_reloc
<size
>(r_type
))
10750 Address off
= target
->glink_section()->find_global_entry(gsym
);
10751 if (off
!= invalid_address
)
10753 value
= target
->glink_section()->global_entry_address() + off
;
10754 has_stub_value
= true;
10759 Stub_table
<size
, big_endian
>* stub_table
= NULL
;
10760 if (target
->stub_tables().size() == 1)
10761 stub_table
= target
->stub_tables()[0];
10762 if (stub_table
== NULL
10765 && !parameters
->options().output_is_position_independent()
10766 && !is_branch_reloc
<size
>(r_type
)))
10767 stub_table
= object
->stub_table(relinfo
->data_shndx
);
10768 if (stub_table
== NULL
)
10770 // This is a ref from a data section to an ifunc symbol,
10771 // or a non-branch reloc for which we always want to use
10772 // one set of stubs for resolving function addresses.
10773 if (target
->stub_tables().size() != 0)
10774 stub_table
= target
->stub_tables()[0];
10776 if (stub_table
!= NULL
)
10778 const typename Stub_table
<size
, big_endian
>::Plt_stub_ent
* ent
;
10780 ent
= stub_table
->find_plt_call_entry(object
, gsym
, r_type
,
10781 rela
.get_r_addend());
10783 ent
= stub_table
->find_plt_call_entry(object
, r_sym
, r_type
,
10784 rela
.get_r_addend());
10787 value
= stub_table
->stub_address() + ent
->off_
;
10788 const int reloc_size
= elfcpp::Elf_sizes
<size
>::rela_size
;
10789 elfcpp::Shdr
<size
, big_endian
> shdr(relinfo
->reloc_shdr
);
10790 size_t reloc_count
= shdr
.get_sh_size() / reloc_size
;
10793 if (r_type
== elfcpp::R_PPC64_REL24_NOTOC
)
10796 value
+= ent
->p9off_
;
10798 else if (r_type
== elfcpp::R_PPC64_REL24_P9NOTOC
)
10799 value
+= ent
->p9off_
;
10801 value
+= ent
->tocoff_
;
10806 && target
->is_tls_get_addr_opt(gsym
)))
10808 if (r_type
== elfcpp::R_PPC64_REL24_NOTOC
10809 || r_type
== elfcpp::R_PPC64_REL24_P9NOTOC
)
10811 if (!(target
->power10_stubs()
10812 && target
->power10_stubs_auto()))
10815 else if (relnum
< reloc_count
- 1)
10817 Reltype
next_rela(preloc
+ reloc_size
);
10818 if (elfcpp::elf_r_type
<size
>(next_rela
.get_r_info())
10819 == elfcpp::R_PPC64_TOCSAVE
10820 && (next_rela
.get_r_offset()
10821 == rela
.get_r_offset() + 4))
10825 localentry0
= ent
->localentry0_
;
10826 has_stub_value
= true;
10830 // We don't care too much about bogus debug references to
10831 // non-local functions, but otherwise there had better be a plt
10832 // call stub or global entry stub as appropriate.
10833 gold_assert(has_stub_value
|| !(os
->flags() & elfcpp::SHF_ALLOC
));
10836 if (!pltcall_to_direct
&& (is_plt16_reloc
<size
>(r_type
)
10837 || r_type
== elfcpp::R_PPC64_PLT_PCREL34
10838 || r_type
== elfcpp::R_PPC64_PLT_PCREL34_NOTOC
))
10840 const Output_data_plt_powerpc
<size
, big_endian
>* plt
;
10842 value
= target
->plt_off(gsym
, &plt
);
10844 value
= target
->plt_off(object
, r_sym
, &plt
);
10845 value
+= plt
->address();
10849 if (r_type
!= elfcpp::R_PPC64_PLT_PCREL34
10850 && r_type
!= elfcpp::R_PPC64_PLT_PCREL34_NOTOC
)
10851 value
-= target
->toc_pointer();
10853 else if (parameters
->options().output_is_position_independent())
10855 if (rela
.get_r_addend() >= 32768)
10857 unsigned int got2
= object
->got2_shndx();
10858 value
-= (object
->get_output_section_offset(got2
)
10859 + object
->output_section(got2
)->address()
10860 + rela
.get_r_addend());
10863 value
-= target
->toc_pointer();
10866 else if (pltcall_to_direct
10867 && (is_plt16_reloc
<size
>(r_type
)
10868 || r_type
== elfcpp::R_POWERPC_PLTSEQ
10869 || r_type
== elfcpp::R_PPC64_PLTSEQ_NOTOC
))
10871 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
10872 elfcpp::Swap
<32, big_endian
>::writeval(iview
, nop
);
10873 r_type
= elfcpp::R_POWERPC_NONE
;
10875 else if (pltcall_to_direct
10876 && (r_type
== elfcpp::R_PPC64_PLT_PCREL34
10877 || r_type
== elfcpp::R_PPC64_PLT_PCREL34_NOTOC
))
10879 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
10880 elfcpp::Swap
<32, big_endian
>::writeval(iview
, pnop
>> 32);
10881 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1, pnop
& 0xffffffff);
10882 r_type
= elfcpp::R_POWERPC_NONE
;
10884 else if (is_got_reloc(r_type
))
10886 uint64_t addend
= size
== 32 ? 0 : rela
.get_r_addend();
10887 Got_type got_type
= ((size
== 32
10888 || r_type
== elfcpp::R_POWERPC_GOT16
10889 || r_type
== elfcpp::R_PPC64_GOT16_DS
)
10890 ? GOT_TYPE_SMALL
: GOT_TYPE_STANDARD
);
10892 value
= gsym
->got_offset(got_type
, addend
);
10894 value
= object
->local_got_offset(r_sym
, got_type
, addend
);
10895 if (r_type
== elfcpp::R_PPC64_GOT_PCREL34
)
10896 value
+= target
->got_section(got_type
)->address();
10898 value
-= target
->got_base_offset(got_type
);
10900 else if (r_type
== elfcpp::R_PPC64_TOC
)
10902 value
= target
->toc_pointer();
10904 else if (gsym
!= NULL
10905 && (r_type
== elfcpp::R_POWERPC_REL24
10906 || r_type
== elfcpp::R_PPC_PLTREL24
)
10911 typedef typename
elfcpp::Swap
<32, big_endian
>::Valtype Valtype
;
10912 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
10913 bool can_plt_call
= localentry0
|| target
->is_tls_get_addr_opt(gsym
);
10914 if (!can_plt_call
&& rela
.get_r_offset() + 8 <= view_size
)
10916 Valtype insn
= elfcpp::Swap
<32, big_endian
>::readval(wv
);
10917 Valtype insn2
= elfcpp::Swap
<32, big_endian
>::readval(wv
+ 1);
10918 if ((insn
& 1) != 0
10920 || insn2
== cror_15_15_15
|| insn2
== cror_31_31_31
))
10922 elfcpp::Swap
<32, big_endian
>::
10923 writeval(wv
+ 1, ld_2_1
+ target
->stk_toc());
10924 can_plt_call
= true;
10929 // If we don't have a branch and link followed by a nop,
10930 // we can't go via the plt because there is no place to
10931 // put a toc restoring instruction.
10932 // Unless we know we won't be returning.
10933 if (strcmp(gsym
->name(), "__libc_start_main") == 0)
10934 can_plt_call
= true;
10938 // g++ as of 20130507 emits self-calls without a
10939 // following nop. This is arguably wrong since we have
10940 // conflicting information. On the one hand a global
10941 // symbol and on the other a local call sequence, but
10942 // don't error for this special case.
10943 // It isn't possible to cheaply verify we have exactly
10944 // such a call. Allow all calls to the same section.
10946 Address code
= value
;
10947 if (gsym
->source() == Symbol::FROM_OBJECT
10948 && gsym
->object() == object
)
10950 unsigned int dest_shndx
= 0;
10951 if (target
->abiversion() < 2)
10953 Address addend
= rela
.get_r_addend();
10954 code
= psymval
->value(object
, addend
);
10955 target
->symval_for_branch(relinfo
->symtab
, gsym
, object
,
10956 &code
, &dest_shndx
);
10959 if (dest_shndx
== 0)
10960 dest_shndx
= gsym
->shndx(&is_ordinary
);
10961 ok
= dest_shndx
== relinfo
->data_shndx
;
10965 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
10966 _("call lacks nop, can't restore toc; "
10967 "recompile with -fPIC"));
10973 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
10974 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
10975 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HI
10976 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HA
10977 || r_type
== elfcpp::R_PPC64_GOT_TLSGD_PCREL34
)
10979 // First instruction of a global dynamic sequence, arg setup insn.
10980 bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
10981 tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
10982 Got_type got_type
= ((size
== 32
10983 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
)
10984 ? GOT_TYPE_SMALL
: GOT_TYPE_STANDARD
);
10985 if (tls_type
== tls::TLSOPT_NONE
)
10986 got_type
= Got_type(got_type
| GOT_TYPE_TLSGD
);
10987 else if (tls_type
== tls::TLSOPT_TO_IE
)
10988 got_type
= Got_type(got_type
| GOT_TYPE_TPREL
);
10989 if ((got_type
& ~GOT_TYPE_SMALL
) != GOT_TYPE_STANDARD
)
10991 uint64_t addend
= size
== 32 ? 0 : rela
.get_r_addend();
10993 value
= gsym
->got_offset(got_type
, addend
);
10995 value
= object
->local_got_offset(r_sym
, got_type
, addend
);
10996 if (r_type
== elfcpp::R_PPC64_GOT_TLSGD_PCREL34
)
10997 value
+= target
->got_section(got_type
)->address();
10999 value
-= target
->got_base_offset(got_type
);
11001 if (tls_type
== tls::TLSOPT_TO_IE
)
11003 if (r_type
== elfcpp::R_PPC64_GOT_TLSGD_PCREL34
)
11005 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
11006 uint64_t pinsn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11008 pinsn
|= elfcpp::Swap
<32, big_endian
>::readval(iview
+ 1);
11010 pinsn
+= (-2ULL << 56) + (57ULL << 26) - (14ULL << 26);
11011 elfcpp::Swap
<32, big_endian
>::writeval(iview
, pinsn
>> 32);
11012 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1,
11013 pinsn
& 0xffffffff);
11014 r_type
= elfcpp::R_PPC64_GOT_TPREL_PCREL34
;
11018 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
11019 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
11021 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
11022 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11023 insn
&= (1 << 26) - (1 << 16); // extract rt,ra from addi
11025 insn
|= 32 << 26; // lwz
11027 insn
|= 58 << 26; // ld
11028 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
11030 r_type
+= (elfcpp::R_POWERPC_GOT_TPREL16
11031 - elfcpp::R_POWERPC_GOT_TLSGD16
);
11034 else if (tls_type
== tls::TLSOPT_TO_LE
)
11036 if (r_type
== elfcpp::R_PPC64_GOT_TLSGD_PCREL34
)
11038 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
11039 uint64_t pinsn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11041 pinsn
|= elfcpp::Swap
<32, big_endian
>::readval(iview
+ 1);
11042 // pla pcrel -> paddi r13
11043 pinsn
+= (-1ULL << 52) + (13ULL << 16);
11044 elfcpp::Swap
<32, big_endian
>::writeval(iview
, pinsn
>> 32);
11045 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1,
11046 pinsn
& 0xffffffff);
11047 r_type
= elfcpp::R_PPC64_TPREL34
;
11048 value
= psymval
->value(object
, rela
.get_r_addend());
11052 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
11053 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
11055 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
11056 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11057 insn
&= (1 << 26) - (1 << 21); // extract rt
11061 insn
|= addis_0_13
;
11062 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
11063 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
11064 value
= psymval
->value(object
, rela
.get_r_addend());
11068 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
11070 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
11071 r_type
= elfcpp::R_POWERPC_NONE
;
11076 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
11077 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
11078 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HI
11079 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HA
11080 || r_type
== elfcpp::R_PPC64_GOT_TLSLD_PCREL34
)
11082 // First instruction of a local dynamic sequence, arg setup insn.
11083 tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
11084 if (tls_type
== tls::TLSOPT_NONE
)
11086 value
= target
->tlsld_got_offset();
11087 if (r_type
== elfcpp::R_PPC64_GOT_TLSLD_PCREL34
)
11088 value
+= target
->got_section(GOT_TYPE_SMALL
)->address();
11090 value
-= target
->got_base_offset(GOT_TYPE_SMALL
);
11094 gold_assert(tls_type
== tls::TLSOPT_TO_LE
);
11095 if (r_type
== elfcpp::R_PPC64_GOT_TLSLD_PCREL34
)
11097 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
11098 uint64_t pinsn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11100 pinsn
|= elfcpp::Swap
<32, big_endian
>::readval(iview
+ 1);
11101 // pla pcrel -> paddi r13
11102 pinsn
+= (-1ULL << 52) + (13ULL << 16);
11103 elfcpp::Swap
<32, big_endian
>::writeval(iview
, pinsn
>> 32);
11104 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1,
11105 pinsn
& 0xffffffff);
11106 r_type
= elfcpp::R_PPC64_TPREL34
;
11107 value
= dtp_offset
;
11109 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
11110 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
)
11112 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
11113 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11114 insn
&= (1 << 26) - (1 << 21); // extract rt
11118 insn
|= addis_0_13
;
11119 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
11120 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
11121 value
= dtp_offset
;
11125 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
11127 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
11128 r_type
= elfcpp::R_POWERPC_NONE
;
11132 else if (r_type
== elfcpp::R_POWERPC_GOT_DTPREL16
11133 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_LO
11134 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_HI
11135 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_HA
11136 || r_type
== elfcpp::R_PPC64_GOT_DTPREL_PCREL34
)
11138 // Accesses relative to a local dynamic sequence address,
11139 // no optimisation here.
11140 uint64_t addend
= size
== 32 ? 0 : rela
.get_r_addend();
11141 Got_type got_type
= ((size
== 32
11142 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16
)
11143 ? GOT_TYPE_SMALL_DTPREL
: GOT_TYPE_DTPREL
);
11145 value
= gsym
->got_offset(got_type
, addend
);
11147 value
= object
->local_got_offset(r_sym
, got_type
, addend
);
11148 if (r_type
== elfcpp::R_PPC64_GOT_DTPREL_PCREL34
)
11149 value
+= target
->got_section(got_type
)->address();
11151 value
-= target
->got_base_offset(got_type
);
11153 else if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
11154 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
11155 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HI
11156 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HA
11157 || r_type
== elfcpp::R_PPC64_GOT_TPREL_PCREL34
)
11159 // First instruction of initial exec sequence.
11160 bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
11161 tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
11162 if (tls_type
== tls::TLSOPT_NONE
)
11164 uint64_t addend
= size
== 32 ? 0 : rela
.get_r_addend();
11165 Got_type got_type
= ((size
== 32
11166 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16
)
11167 ? GOT_TYPE_SMALL_TPREL
: GOT_TYPE_TPREL
);
11169 value
= gsym
->got_offset(got_type
, addend
);
11171 value
= object
->local_got_offset(r_sym
, got_type
, addend
);
11172 if (r_type
== elfcpp::R_PPC64_GOT_TPREL_PCREL34
)
11173 value
+= target
->got_section(got_type
)->address();
11175 value
-= target
->got_base_offset(got_type
);
11179 gold_assert(tls_type
== tls::TLSOPT_TO_LE
);
11180 if (r_type
== elfcpp::R_PPC64_GOT_TPREL_PCREL34
)
11182 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
11183 uint64_t pinsn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11185 pinsn
|= elfcpp::Swap
<32, big_endian
>::readval(iview
+ 1);
11186 // pld ra,sym@got@tprel@pcrel -> paddi ra,r13,sym@tprel
11187 pinsn
+= ((2ULL << 56) + (-1ULL << 52)
11188 + (14ULL << 26) - (57ULL << 26) + (13ULL << 16));
11189 elfcpp::Swap
<32, big_endian
>::writeval(iview
, pinsn
>> 32);
11190 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1,
11191 pinsn
& 0xffffffff);
11192 r_type
= elfcpp::R_PPC64_TPREL34
;
11193 value
= psymval
->value(object
, rela
.get_r_addend());
11195 else if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
11196 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
)
11198 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
11199 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11200 insn
&= (1 << 26) - (1 << 21); // extract rt from ld
11204 insn
|= addis_0_13
;
11205 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
11206 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
11207 value
= psymval
->value(object
, rela
.get_r_addend());
11211 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
11213 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
11214 r_type
= elfcpp::R_POWERPC_NONE
;
11218 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
11219 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
11221 // Second instruction of a global dynamic sequence,
11222 // the __tls_get_addr call
11223 this->expect_tls_get_addr_call(relinfo
, relnum
, rela
.get_r_offset());
11224 bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
11225 tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
11226 if (tls_type
!= tls::TLSOPT_NONE
)
11228 if (tls_type
== tls::TLSOPT_TO_IE
)
11230 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
11231 Insn insn
= add_3_3_13
;
11234 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
11235 r_type
= elfcpp::R_POWERPC_NONE
;
11239 bool is_pcrel
= false;
11240 const int reloc_size
= elfcpp::Elf_sizes
<size
>::rela_size
;
11241 elfcpp::Shdr
<size
, big_endian
> shdr(relinfo
->reloc_shdr
);
11242 size_t reloc_count
= shdr
.get_sh_size() / reloc_size
;
11243 if (relnum
< reloc_count
- 1)
11245 Reltype
next_rela(preloc
+ reloc_size
);
11246 unsigned int r_type2
11247 = elfcpp::elf_r_type
<size
>(next_rela
.get_r_info());
11248 if ((r_type2
== elfcpp::R_PPC64_REL24_NOTOC
11249 || r_type2
== elfcpp::R_PPC64_REL24_P9NOTOC
11250 || r_type2
== elfcpp::R_PPC64_PLTCALL_NOTOC
)
11251 && next_rela
.get_r_offset() == rela
.get_r_offset())
11254 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
11257 elfcpp::Swap
<32, big_endian
>::writeval(iview
, nop
);
11258 r_type
= elfcpp::R_POWERPC_NONE
;
11262 elfcpp::Swap
<32, big_endian
>::writeval(iview
, addi_3_3
);
11263 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
11265 value
= psymval
->value(object
, rela
.get_r_addend());
11268 this->skip_next_tls_get_addr_call();
11271 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
11272 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
11274 // Second instruction of a local dynamic sequence,
11275 // the __tls_get_addr call
11276 this->expect_tls_get_addr_call(relinfo
, relnum
, rela
.get_r_offset());
11277 tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
11278 if (tls_type
== tls::TLSOPT_TO_LE
)
11280 bool is_pcrel
= false;
11281 const int reloc_size
= elfcpp::Elf_sizes
<size
>::rela_size
;
11282 elfcpp::Shdr
<size
, big_endian
> shdr(relinfo
->reloc_shdr
);
11283 size_t reloc_count
= shdr
.get_sh_size() / reloc_size
;
11284 if (relnum
< reloc_count
- 1)
11286 Reltype
next_rela(preloc
+ reloc_size
);
11287 unsigned int r_type2
11288 = elfcpp::elf_r_type
<size
>(next_rela
.get_r_info());
11289 if ((r_type2
== elfcpp::R_PPC64_REL24_NOTOC
11290 || r_type2
== elfcpp::R_PPC64_REL24_P9NOTOC
11291 || r_type2
== elfcpp::R_PPC64_PLTCALL_NOTOC
)
11292 && next_rela
.get_r_offset() == rela
.get_r_offset())
11295 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
11298 elfcpp::Swap
<32, big_endian
>::writeval(iview
, nop
);
11299 r_type
= elfcpp::R_POWERPC_NONE
;
11303 elfcpp::Swap
<32, big_endian
>::writeval(iview
, addi_3_3
);
11304 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
11306 value
= dtp_offset
;
11308 this->skip_next_tls_get_addr_call();
11311 else if (r_type
== elfcpp::R_POWERPC_TLS
)
11313 // Second instruction of an initial exec sequence
11314 bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
11315 tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
11316 if (tls_type
== tls::TLSOPT_TO_LE
)
11318 Address roff
= rela
.get_r_offset() & 3;
11319 Insn
* iview
= reinterpret_cast<Insn
*>(view
- roff
);
11320 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11321 unsigned int reg
= size
== 32 ? 2 : 13;
11322 insn
= at_tls_transform(insn
, reg
);
11323 gold_assert(insn
!= 0);
11326 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
11327 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
11329 value
= psymval
->value(object
, rela
.get_r_addend());
11331 else if (roff
== 1)
11333 // For pcrel IE to LE we already have the full offset
11334 // and thus don't need an addi here. A nop or mr will do.
11335 if ((insn
& (0x3f << 26)) == 14 << 26)
11337 // Extract regs from addi rt,ra,si.
11338 unsigned int rt
= (insn
>> 21) & 0x1f;
11339 unsigned int ra
= (insn
>> 16) & 0x1f;
11344 // Build or ra,rs,rb with rb==rs, ie. mr ra,rs.
11345 insn
= (rt
<< 16) | (ra
<< 21) | (ra
<< 11);
11346 insn
|= (31u << 26) | (444u << 1);
11349 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
11350 r_type
= elfcpp::R_POWERPC_NONE
;
11354 else if (!has_stub_value
)
11356 if (pltcall_to_direct
&& (r_type
== elfcpp::R_POWERPC_PLTCALL
11357 || r_type
== elfcpp::R_PPC64_PLTCALL_NOTOC
))
11359 // PLTCALL without plt entry => convert to direct call
11360 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
11361 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11362 insn
= (insn
& 1) | b
;
11363 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
11365 r_type
= elfcpp::R_PPC_PLTREL24
;
11366 else if (r_type
== elfcpp::R_PPC64_PLTCALL_NOTOC
)
11367 r_type
= elfcpp::R_PPC64_REL24_NOTOC
;
11369 r_type
= elfcpp::R_POWERPC_REL24
;
11371 Address addend
= 0;
11373 && (r_type
== elfcpp::R_PPC_PLTREL24
11374 || r_type
== elfcpp::R_POWERPC_PLT16_LO
11375 || r_type
== elfcpp::R_POWERPC_PLT16_HI
11376 || r_type
== elfcpp::R_POWERPC_PLT16_HA
)))
11377 addend
= rela
.get_r_addend();
11378 value
= psymval
->value(object
, addend
);
11379 unsigned int local_ent
= 0;
11380 if (size
== 64 && is_branch_reloc
<size
>(r_type
))
11382 if (target
->abiversion() >= 2)
11385 local_ent
= object
->ppc64_local_entry_offset(gsym
);
11387 local_ent
= object
->ppc64_local_entry_offset(r_sym
);
11391 unsigned int dest_shndx
;
11392 target
->symval_for_branch(relinfo
->symtab
, gsym
, object
,
11393 &value
, &dest_shndx
);
11396 Address max_branch
= max_branch_delta
<size
>(r_type
);
11397 if (max_branch
!= 0
11398 && (value
+ local_ent
- address
+ max_branch
>= 2 * max_branch
11400 && (r_type
== elfcpp::R_PPC64_REL24_NOTOC
11401 || r_type
== elfcpp::R_PPC64_REL24_NOTOC
)
11403 ? object
->ppc64_needs_toc(gsym
)
11404 : object
->ppc64_needs_toc(r_sym
)))))
11406 Stub_table
<size
, big_endian
>* stub_table
11407 = object
->stub_table(relinfo
->data_shndx
);
11408 if (stub_table
!= NULL
)
11410 const typename Stub_table
<size
, big_endian
>::Branch_stub_ent
* ent
11411 = stub_table
->find_long_branch_entry(value
);
11414 if (ent
->save_res_
)
11415 value
= (value
- target
->savres_section()->address()
11416 + stub_table
->stub_address()
11417 + stub_table
->plt_size()
11418 + stub_table
->branch_size());
11421 value
= (stub_table
->stub_address()
11422 + stub_table
->plt_size()
11426 if (r_type
== elfcpp::R_PPC64_REL24_NOTOC
)
11429 value
+= ent
->p9off_
;
11431 else if (r_type
== elfcpp::R_PPC64_REL24_P9NOTOC
)
11432 value
+= ent
->p9off_
;
11434 value
+= ent
->tocoff_
;
11437 has_stub_value
= true;
11441 if (!has_stub_value
)
11442 value
+= local_ent
;
11447 case elfcpp::R_PPC64_REL24_NOTOC
:
11451 case elfcpp::R_PPC64_REL24_P9NOTOC
:
11452 case elfcpp::R_PPC64_REL64
:
11453 case elfcpp::R_POWERPC_REL32
:
11454 case elfcpp::R_POWERPC_REL24
:
11455 case elfcpp::R_PPC_PLTREL24
:
11456 case elfcpp::R_PPC_LOCAL24PC
:
11457 case elfcpp::R_POWERPC_REL16
:
11458 case elfcpp::R_POWERPC_REL16_LO
:
11459 case elfcpp::R_POWERPC_REL16_HI
:
11460 case elfcpp::R_POWERPC_REL16_HA
:
11461 case elfcpp::R_POWERPC_REL16DX_HA
:
11462 case elfcpp::R_PPC64_REL16_HIGH
:
11463 case elfcpp::R_PPC64_REL16_HIGHA
:
11464 case elfcpp::R_PPC64_REL16_HIGHER
:
11465 case elfcpp::R_PPC64_REL16_HIGHERA
:
11466 case elfcpp::R_PPC64_REL16_HIGHEST
:
11467 case elfcpp::R_PPC64_REL16_HIGHESTA
:
11468 case elfcpp::R_POWERPC_REL14
:
11469 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
11470 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
11471 case elfcpp::R_PPC64_PCREL34
:
11472 case elfcpp::R_PPC64_GOT_PCREL34
:
11473 case elfcpp::R_PPC64_PLT_PCREL34
:
11474 case elfcpp::R_PPC64_PLT_PCREL34_NOTOC
:
11475 case elfcpp::R_PPC64_PCREL28
:
11476 case elfcpp::R_PPC64_GOT_TLSGD_PCREL34
:
11477 case elfcpp::R_PPC64_GOT_TLSLD_PCREL34
:
11478 case elfcpp::R_PPC64_GOT_TPREL_PCREL34
:
11479 case elfcpp::R_PPC64_GOT_DTPREL_PCREL34
:
11480 case elfcpp::R_PPC64_REL16_HIGHER34
:
11481 case elfcpp::R_PPC64_REL16_HIGHERA34
:
11482 case elfcpp::R_PPC64_REL16_HIGHEST34
:
11483 case elfcpp::R_PPC64_REL16_HIGHESTA34
:
11487 case elfcpp::R_PPC64_TOC16
:
11488 case elfcpp::R_PPC64_TOC16_LO
:
11489 case elfcpp::R_PPC64_TOC16_HI
:
11490 case elfcpp::R_PPC64_TOC16_HA
:
11491 case elfcpp::R_PPC64_TOC16_DS
:
11492 case elfcpp::R_PPC64_TOC16_LO_DS
:
11493 // Subtract the TOC base address.
11494 value
-= target
->toc_pointer();
11497 case elfcpp::R_POWERPC_SECTOFF
:
11498 case elfcpp::R_POWERPC_SECTOFF_LO
:
11499 case elfcpp::R_POWERPC_SECTOFF_HI
:
11500 case elfcpp::R_POWERPC_SECTOFF_HA
:
11501 case elfcpp::R_PPC64_SECTOFF_DS
:
11502 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
11504 value
-= os
->address();
11507 case elfcpp::R_PPC64_TPREL16_DS
:
11508 case elfcpp::R_PPC64_TPREL16_LO_DS
:
11509 case elfcpp::R_PPC64_TPREL16_HIGH
:
11510 case elfcpp::R_PPC64_TPREL16_HIGHA
:
11512 // R_PPC_TLSGD, R_PPC_TLSLD, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HI
11515 case elfcpp::R_POWERPC_TPREL16
:
11516 case elfcpp::R_POWERPC_TPREL16_LO
:
11517 case elfcpp::R_POWERPC_TPREL16_HI
:
11518 case elfcpp::R_POWERPC_TPREL16_HA
:
11519 case elfcpp::R_POWERPC_TPREL
:
11520 case elfcpp::R_PPC64_TPREL16_HIGHER
:
11521 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
11522 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
11523 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
11524 case elfcpp::R_PPC64_TPREL34
:
11525 // tls symbol values are relative to tls_segment()->vaddr()
11526 value
-= tp_offset
;
11529 case elfcpp::R_PPC64_DTPREL16_DS
:
11530 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
11531 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
11532 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
11533 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
11534 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
11536 // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO
11537 // R_PPC_EMB_NADDR16_HI, R_PPC_EMB_NADDR16_HA, R_PPC_EMB_SDAI16
11540 case elfcpp::R_POWERPC_DTPREL16
:
11541 case elfcpp::R_POWERPC_DTPREL16_LO
:
11542 case elfcpp::R_POWERPC_DTPREL16_HI
:
11543 case elfcpp::R_POWERPC_DTPREL16_HA
:
11544 case elfcpp::R_POWERPC_DTPREL
:
11545 case elfcpp::R_PPC64_DTPREL16_HIGH
:
11546 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
11547 case elfcpp::R_PPC64_DTPREL34
:
11548 // tls symbol values are relative to tls_segment()->vaddr()
11549 value
-= dtp_offset
;
11552 case elfcpp::R_PPC64_ADDR64_LOCAL
:
11554 value
+= object
->ppc64_local_entry_offset(gsym
);
11556 value
+= object
->ppc64_local_entry_offset(r_sym
);
11563 Insn branch_bit
= 0;
11566 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
11567 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
11568 branch_bit
= 1 << 21;
11570 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
11571 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
11573 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
11574 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11575 insn
&= ~(1 << 21);
11576 insn
|= branch_bit
;
11577 if (this->is_isa_v2
)
11579 // Set 'a' bit. This is 0b00010 in BO field for branch
11580 // on CR(BI) insns (BO == 001at or 011at), and 0b01000
11581 // for branch on CTR insns (BO == 1a00t or 1a01t).
11582 if ((insn
& (0x14 << 21)) == (0x04 << 21))
11583 insn
|= 0x02 << 21;
11584 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
11585 insn
|= 0x08 << 21;
11591 // Invert 'y' bit if not the default.
11592 if (static_cast<Signed_address
>(value
) < 0)
11595 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
11599 case elfcpp::R_POWERPC_PLT16_HA
:
11601 && !parameters
->options().output_is_position_independent())
11603 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
11604 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11606 // Convert addis to lis.
11607 if ((insn
& (0x3f << 26)) == 15u << 26
11608 && (insn
& (0x1f << 16)) != 0)
11610 insn
&= ~(0x1f << 16);
11611 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
11621 ? relative_value_is_known(gsym
)
11622 : relative_value_is_known(psymval
))
11627 uint64_t pinsn
, pinsn2
;
11634 // Multi-instruction sequences that access the GOT/TOC can
11635 // be optimized, eg.
11636 // addis ra,r2,x@got@ha; ld rb,x@got@l(ra);
11637 // to addis ra,r2,x@toc@ha; addi rb,ra,x@toc@l;
11639 // addis ra,r2,0; addi rb,ra,x@toc@l;
11640 // to nop; addi rb,r2,x@toc;
11641 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
11642 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
11643 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
11644 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
11645 case elfcpp::R_POWERPC_GOT16_HA
:
11646 case elfcpp::R_PPC64_TOC16_HA
:
11647 if (size
== 64 && parameters
->options().toc_optimize())
11649 iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
11650 insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11651 if ((r_type
== elfcpp::R_PPC64_TOC16_HA
11652 && object
->make_toc_relative(target
, &value
))
11653 || (r_type
== elfcpp::R_POWERPC_GOT16_HA
11654 && object
->make_got_relative(target
, psymval
,
11655 rela
.get_r_addend(),
11658 gold_assert((insn
& ((0x3f << 26) | 0x1f << 16))
11659 == ((15u << 26) | (2 << 16)));
11661 if (((insn
& ((0x3f << 26) | 0x1f << 16))
11662 == ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
11663 && value
+ 0x8000 < 0x10000)
11665 elfcpp::Swap
<32, big_endian
>::writeval(iview
, nop
);
11671 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
11672 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
11673 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
11674 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
11675 case elfcpp::R_POWERPC_GOT16_LO
:
11676 case elfcpp::R_PPC64_GOT16_LO_DS
:
11677 case elfcpp::R_PPC64_TOC16_LO
:
11678 case elfcpp::R_PPC64_TOC16_LO_DS
:
11679 if (size
== 64 && parameters
->options().toc_optimize())
11681 iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
11682 insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11683 bool changed
= false;
11684 if ((r_type
== elfcpp::R_PPC64_TOC16_LO_DS
11685 && object
->make_toc_relative(target
, &value
))
11686 || (r_type
== elfcpp::R_PPC64_GOT16_LO_DS
11687 && object
->make_got_relative(target
, psymval
,
11688 rela
.get_r_addend(),
11691 gold_assert ((insn
& (0x3f << 26)) == 58u << 26 /* ld */);
11692 insn
^= (14u << 26) ^ (58u << 26);
11693 r_type
= elfcpp::R_PPC64_TOC16_LO
;
11696 if (ok_lo_toc_insn(insn
, r_type
)
11697 && value
+ 0x8000 < 0x10000)
11699 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
11701 // Transform addic to addi when we change reg.
11702 insn
&= ~((0x3f << 26) | (0x1f << 16));
11703 insn
|= (14u << 26) | (2 << 16);
11707 insn
&= ~(0x1f << 16);
11713 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
11717 case elfcpp::R_PPC64_GOT_PCREL34
:
11718 if (size
== 64 && parameters
->options().toc_optimize())
11720 iview
= reinterpret_cast<Insn
*>(view
);
11721 pinsn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11723 pinsn
|= elfcpp::Swap
<32, big_endian
>::readval(iview
+ 1);
11724 if ((pinsn
& ((-1ULL << 50) | (63ULL << 26)))
11725 != ((1ULL << 58) | (1ULL << 52) | (57ULL << 26) /* pld */))
11728 Address relval
= psymval
->value(object
, rela
.get_r_addend());
11730 if (relval
+ (1ULL << 33) < 1ULL << 34)
11733 // Replace with paddi
11734 pinsn
+= (2ULL << 56) + (14ULL << 26) - (57ULL << 26);
11735 elfcpp::Swap
<32, big_endian
>::writeval(iview
, pinsn
>> 32);
11736 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1,
11737 pinsn
& 0xffffffff);
11743 case elfcpp::R_PPC64_PCREL34
:
11746 iview
= reinterpret_cast<Insn
*>(view
);
11747 pinsn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11749 pinsn
|= elfcpp::Swap
<32, big_endian
>::readval(iview
+ 1);
11750 if ((pinsn
& ((-1ULL << 50) | (63ULL << 26)))
11751 != ((1ULL << 58) | (2ULL << 56) | (1ULL << 52)
11752 | (14ULL << 26) /* paddi */))
11756 const int reloc_size
= elfcpp::Elf_sizes
<size
>::rela_size
;
11757 elfcpp::Shdr
<size
, big_endian
> shdr(relinfo
->reloc_shdr
);
11758 size_t reloc_count
= shdr
.get_sh_size() / reloc_size
;
11759 if (relnum
>= reloc_count
- 1)
11762 Reltype
next_rela(preloc
+ reloc_size
);
11763 if ((elfcpp::elf_r_type
<size
>(next_rela
.get_r_info())
11764 != elfcpp::R_PPC64_PCREL_OPT
)
11765 || next_rela
.get_r_offset() != rela
.get_r_offset())
11768 Address off
= next_rela
.get_r_addend();
11770 off
= 8; // zero means next insn.
11771 if (off
+ rela
.get_r_offset() + 4 > view_size
)
11774 iview2
= reinterpret_cast<Insn
*>(view
+ off
);
11775 pinsn2
= elfcpp::Swap
<32, big_endian
>::readval(iview2
);
11777 if ((pinsn2
& (63ULL << 58)) == 1ULL << 58)
11779 if (xlate_pcrel_opt(&pinsn
, &pinsn2
))
11781 elfcpp::Swap
<32, big_endian
>::writeval(iview
, pinsn
>> 32);
11782 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1,
11783 pinsn
& 0xffffffff);
11784 elfcpp::Swap
<32, big_endian
>::writeval(iview2
, pinsn2
>> 32);
11789 case elfcpp::R_POWERPC_TPREL16_HA
:
11790 if (target
->tprel_opt() && value
+ 0x8000 < 0x10000)
11792 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
11793 elfcpp::Swap
<32, big_endian
>::writeval(iview
, nop
);
11798 case elfcpp::R_PPC64_TPREL16_LO_DS
:
11800 // R_PPC_TLSGD, R_PPC_TLSLD
11803 case elfcpp::R_POWERPC_TPREL16_LO
:
11804 if (target
->tprel_opt() && value
+ 0x8000 < 0x10000)
11806 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
11807 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11808 insn
&= ~(0x1f << 16);
11809 insn
|= (size
== 32 ? 2 : 13) << 16;
11810 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
11814 case elfcpp::R_PPC64_ENTRY
:
11817 value
= target
->toc_pointer();
11818 if (value
+ 0x80008000 <= 0xffffffff
11819 && !parameters
->options().output_is_position_independent())
11821 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
11822 Insn insn1
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11823 Insn insn2
= elfcpp::Swap
<32, big_endian
>::readval(iview
+ 1);
11825 if ((insn1
& ~0xfffc) == ld_2_12
11826 && insn2
== add_2_2_12
)
11828 insn1
= lis_2
+ ha(value
);
11829 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn1
);
11830 insn2
= addi_2_2
+ l(value
);
11831 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1, insn2
);
11838 if (value
+ 0x80008000 <= 0xffffffff)
11840 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
11841 Insn insn1
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11842 Insn insn2
= elfcpp::Swap
<32, big_endian
>::readval(iview
+ 1);
11844 if ((insn1
& ~0xfffc) == ld_2_12
11845 && insn2
== add_2_2_12
)
11847 insn1
= addis_2_12
+ ha(value
);
11848 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn1
);
11849 insn2
= addi_2_2
+ l(value
);
11850 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1, insn2
);
11858 case elfcpp::R_POWERPC_REL16_LO
:
11859 // If we are generating a non-PIC executable, edit
11860 // 0: addis 2,12,.TOC.-0b@ha
11861 // addi 2,2,.TOC.-0b@l
11862 // used by ELFv2 global entry points to set up r2, to
11864 // addi 2,2,.TOC.@l
11865 // if .TOC. is in range. */
11867 && value
+ address
- 4 + 0x80008000 <= 0xffffffff
11870 && target
->abiversion() >= 2
11871 && !parameters
->options().output_is_position_independent()
11872 && rela
.get_r_addend() == d_offset
+ 4
11874 && strcmp(gsym
->name(), ".TOC.") == 0)
11876 const int reloc_size
= elfcpp::Elf_sizes
<size
>::rela_size
;
11877 Reltype
prev_rela(preloc
- reloc_size
);
11878 if ((prev_rela
.get_r_info()
11879 == elfcpp::elf_r_info
<size
>(r_sym
,
11880 elfcpp::R_POWERPC_REL16_HA
))
11881 && prev_rela
.get_r_offset() + 4 == rela
.get_r_offset()
11882 && prev_rela
.get_r_addend() + 4 == rela
.get_r_addend())
11884 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
11885 Insn insn1
= elfcpp::Swap
<32, big_endian
>::readval(iview
- 1);
11886 Insn insn2
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11888 if ((insn1
& 0xffff0000) == addis_2_12
11889 && (insn2
& 0xffff0000) == addi_2_2
)
11891 insn1
= lis_2
+ ha(value
+ address
- 4);
11892 elfcpp::Swap
<32, big_endian
>::writeval(iview
- 1, insn1
);
11893 insn2
= addi_2_2
+ l(value
+ address
- 4);
11894 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn2
);
11897 relinfo
->rr
->set_strategy(relnum
- 1,
11898 Relocatable_relocs::RELOC_SPECIAL
);
11899 relinfo
->rr
->set_strategy(relnum
,
11900 Relocatable_relocs::RELOC_SPECIAL
);
11910 typename
Reloc::Overflow_check overflow
= Reloc::CHECK_NONE
;
11911 elfcpp::Shdr
<size
, big_endian
> shdr(relinfo
->data_shdr
);
11914 case elfcpp::R_POWERPC_ADDR32
:
11915 case elfcpp::R_POWERPC_UADDR32
:
11917 overflow
= Reloc::CHECK_BITFIELD
;
11920 case elfcpp::R_POWERPC_REL32
:
11921 case elfcpp::R_POWERPC_REL16DX_HA
:
11923 overflow
= Reloc::CHECK_SIGNED
;
11926 case elfcpp::R_POWERPC_UADDR16
:
11927 overflow
= Reloc::CHECK_BITFIELD
;
11930 case elfcpp::R_POWERPC_ADDR16
:
11931 // We really should have three separate relocations,
11932 // one for 16-bit data, one for insns with 16-bit signed fields,
11933 // and one for insns with 16-bit unsigned fields.
11934 overflow
= Reloc::CHECK_BITFIELD
;
11935 if ((shdr
.get_sh_flags() & elfcpp::SHF_EXECINSTR
) != 0)
11936 overflow
= Reloc::CHECK_LOW_INSN
;
11939 case elfcpp::R_POWERPC_ADDR16_HI
:
11940 case elfcpp::R_POWERPC_ADDR16_HA
:
11941 case elfcpp::R_POWERPC_GOT16_HI
:
11942 case elfcpp::R_POWERPC_GOT16_HA
:
11943 case elfcpp::R_POWERPC_PLT16_HI
:
11944 case elfcpp::R_POWERPC_PLT16_HA
:
11945 case elfcpp::R_POWERPC_SECTOFF_HI
:
11946 case elfcpp::R_POWERPC_SECTOFF_HA
:
11947 case elfcpp::R_PPC64_TOC16_HI
:
11948 case elfcpp::R_PPC64_TOC16_HA
:
11949 case elfcpp::R_PPC64_PLTGOT16_HI
:
11950 case elfcpp::R_PPC64_PLTGOT16_HA
:
11951 case elfcpp::R_POWERPC_TPREL16_HI
:
11952 case elfcpp::R_POWERPC_TPREL16_HA
:
11953 case elfcpp::R_POWERPC_DTPREL16_HI
:
11954 case elfcpp::R_POWERPC_DTPREL16_HA
:
11955 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
11956 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
11957 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
11958 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
11959 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
11960 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
11961 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
11962 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
11963 case elfcpp::R_POWERPC_REL16_HI
:
11964 case elfcpp::R_POWERPC_REL16_HA
:
11966 overflow
= Reloc::CHECK_HIGH_INSN
;
11969 case elfcpp::R_POWERPC_REL16
:
11970 case elfcpp::R_PPC64_TOC16
:
11971 case elfcpp::R_POWERPC_GOT16
:
11972 case elfcpp::R_POWERPC_SECTOFF
:
11973 case elfcpp::R_POWERPC_TPREL16
:
11974 case elfcpp::R_POWERPC_DTPREL16
:
11975 case elfcpp::R_POWERPC_GOT_TLSGD16
:
11976 case elfcpp::R_POWERPC_GOT_TLSLD16
:
11977 case elfcpp::R_POWERPC_GOT_TPREL16
:
11978 case elfcpp::R_POWERPC_GOT_DTPREL16
:
11979 overflow
= Reloc::CHECK_LOW_INSN
;
11982 case elfcpp::R_PPC64_REL24_NOTOC
:
11986 case elfcpp::R_PPC64_REL24_P9NOTOC
:
11987 case elfcpp::R_POWERPC_ADDR24
:
11988 case elfcpp::R_POWERPC_ADDR14
:
11989 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
11990 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
11991 case elfcpp::R_PPC64_ADDR16_DS
:
11992 case elfcpp::R_POWERPC_REL24
:
11993 case elfcpp::R_PPC_PLTREL24
:
11994 case elfcpp::R_PPC_LOCAL24PC
:
11995 case elfcpp::R_PPC64_TPREL16_DS
:
11996 case elfcpp::R_PPC64_DTPREL16_DS
:
11997 case elfcpp::R_PPC64_TOC16_DS
:
11998 case elfcpp::R_PPC64_GOT16_DS
:
11999 case elfcpp::R_PPC64_SECTOFF_DS
:
12000 case elfcpp::R_POWERPC_REL14
:
12001 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
12002 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
12003 case elfcpp::R_PPC64_D34
:
12004 case elfcpp::R_PPC64_PCREL34
:
12005 case elfcpp::R_PPC64_GOT_PCREL34
:
12006 case elfcpp::R_PPC64_PLT_PCREL34
:
12007 case elfcpp::R_PPC64_PLT_PCREL34_NOTOC
:
12008 case elfcpp::R_PPC64_D28
:
12009 case elfcpp::R_PPC64_PCREL28
:
12010 case elfcpp::R_PPC64_TPREL34
:
12011 case elfcpp::R_PPC64_DTPREL34
:
12012 case elfcpp::R_PPC64_GOT_TLSGD_PCREL34
:
12013 case elfcpp::R_PPC64_GOT_TLSLD_PCREL34
:
12014 case elfcpp::R_PPC64_GOT_TPREL_PCREL34
:
12015 case elfcpp::R_PPC64_GOT_DTPREL_PCREL34
:
12016 overflow
= Reloc::CHECK_SIGNED
;
12020 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
12023 if (overflow
== Reloc::CHECK_LOW_INSN
12024 || overflow
== Reloc::CHECK_HIGH_INSN
)
12026 insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
12028 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
12029 overflow
= Reloc::CHECK_BITFIELD
;
12030 else if (overflow
== Reloc::CHECK_LOW_INSN
12031 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
12032 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
12033 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
12034 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
12035 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
12036 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
12037 overflow
= Reloc::CHECK_UNSIGNED
;
12039 overflow
= Reloc::CHECK_SIGNED
;
12042 bool maybe_dq_reloc
= false;
12043 typename Powerpc_relocate_functions
<size
, big_endian
>::Status status
12044 = Powerpc_relocate_functions
<size
, big_endian
>::STATUS_OK
;
12047 case elfcpp::R_POWERPC_NONE
:
12048 case elfcpp::R_POWERPC_TLS
:
12049 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
12050 case elfcpp::R_POWERPC_GNU_VTENTRY
:
12051 case elfcpp::R_POWERPC_PLTSEQ
:
12052 case elfcpp::R_POWERPC_PLTCALL
:
12053 case elfcpp::R_PPC64_PLTSEQ_NOTOC
:
12054 case elfcpp::R_PPC64_PLTCALL_NOTOC
:
12055 case elfcpp::R_PPC64_PCREL_OPT
:
12058 case elfcpp::R_PPC64_ADDR64
:
12059 case elfcpp::R_PPC64_REL64
:
12060 case elfcpp::R_PPC64_TOC
:
12061 case elfcpp::R_PPC64_ADDR64_LOCAL
:
12062 Reloc::addr64(view
, value
);
12065 case elfcpp::R_POWERPC_TPREL
:
12066 case elfcpp::R_POWERPC_DTPREL
:
12068 Reloc::addr64(view
, value
);
12070 status
= Reloc::addr32(view
, value
, overflow
);
12073 case elfcpp::R_PPC64_UADDR64
:
12074 Reloc::addr64_u(view
, value
);
12077 case elfcpp::R_POWERPC_ADDR32
:
12078 status
= Reloc::addr32(view
, value
, overflow
);
12081 case elfcpp::R_POWERPC_REL32
:
12082 case elfcpp::R_POWERPC_UADDR32
:
12083 status
= Reloc::addr32_u(view
, value
, overflow
);
12086 case elfcpp::R_PPC64_REL24_NOTOC
:
12088 goto unsupp
; // R_PPC_EMB_RELSDA
12090 case elfcpp::R_PPC64_REL24_P9NOTOC
:
12091 case elfcpp::R_POWERPC_ADDR24
:
12092 case elfcpp::R_POWERPC_REL24
:
12093 case elfcpp::R_PPC_PLTREL24
:
12094 case elfcpp::R_PPC_LOCAL24PC
:
12095 status
= Reloc::addr24(view
, value
, overflow
);
12098 case elfcpp::R_POWERPC_GOT_DTPREL16
:
12099 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
12100 case elfcpp::R_POWERPC_GOT_TPREL16
:
12101 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
12104 // On ppc64 these are all ds form
12105 maybe_dq_reloc
= true;
12109 case elfcpp::R_POWERPC_ADDR16
:
12110 case elfcpp::R_POWERPC_REL16
:
12111 case elfcpp::R_PPC64_TOC16
:
12112 case elfcpp::R_POWERPC_GOT16
:
12113 case elfcpp::R_POWERPC_SECTOFF
:
12114 case elfcpp::R_POWERPC_TPREL16
:
12115 case elfcpp::R_POWERPC_DTPREL16
:
12116 case elfcpp::R_POWERPC_GOT_TLSGD16
:
12117 case elfcpp::R_POWERPC_GOT_TLSLD16
:
12118 case elfcpp::R_POWERPC_ADDR16_LO
:
12119 case elfcpp::R_POWERPC_REL16_LO
:
12120 case elfcpp::R_PPC64_TOC16_LO
:
12121 case elfcpp::R_POWERPC_GOT16_LO
:
12122 case elfcpp::R_POWERPC_PLT16_LO
:
12123 case elfcpp::R_POWERPC_SECTOFF_LO
:
12124 case elfcpp::R_POWERPC_TPREL16_LO
:
12125 case elfcpp::R_POWERPC_DTPREL16_LO
:
12126 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
12127 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
12129 status
= Reloc::addr16(view
, value
, overflow
);
12131 maybe_dq_reloc
= true;
12134 case elfcpp::R_POWERPC_UADDR16
:
12135 status
= Reloc::addr16_u(view
, value
, overflow
);
12138 case elfcpp::R_PPC64_ADDR16_HIGH
:
12139 case elfcpp::R_PPC64_TPREL16_HIGH
:
12140 case elfcpp::R_PPC64_DTPREL16_HIGH
:
12142 // R_PPC_EMB_MRKREF, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HA
12145 case elfcpp::R_POWERPC_ADDR16_HI
:
12146 case elfcpp::R_POWERPC_REL16_HI
:
12147 case elfcpp::R_PPC64_REL16_HIGH
:
12148 case elfcpp::R_PPC64_TOC16_HI
:
12149 case elfcpp::R_POWERPC_GOT16_HI
:
12150 case elfcpp::R_POWERPC_PLT16_HI
:
12151 case elfcpp::R_POWERPC_SECTOFF_HI
:
12152 case elfcpp::R_POWERPC_TPREL16_HI
:
12153 case elfcpp::R_POWERPC_DTPREL16_HI
:
12154 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
12155 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
12156 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
12157 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
12158 Reloc::addr16_hi(view
, value
);
12161 case elfcpp::R_PPC64_ADDR16_HIGHA
:
12162 case elfcpp::R_PPC64_TPREL16_HIGHA
:
12163 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
12165 // R_PPC_EMB_RELSEC16, R_PPC_EMB_RELST_HI, R_PPC_EMB_BIT_FLD
12168 case elfcpp::R_POWERPC_ADDR16_HA
:
12169 case elfcpp::R_POWERPC_REL16_HA
:
12170 case elfcpp::R_PPC64_REL16_HIGHA
:
12171 case elfcpp::R_PPC64_TOC16_HA
:
12172 case elfcpp::R_POWERPC_GOT16_HA
:
12173 case elfcpp::R_POWERPC_PLT16_HA
:
12174 case elfcpp::R_POWERPC_SECTOFF_HA
:
12175 case elfcpp::R_POWERPC_TPREL16_HA
:
12176 case elfcpp::R_POWERPC_DTPREL16_HA
:
12177 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
12178 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
12179 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
12180 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
12181 Reloc::addr16_ha(view
, value
);
12184 case elfcpp::R_POWERPC_REL16DX_HA
:
12185 status
= Reloc::addr16dx_ha(view
, value
, overflow
);
12188 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
12190 // R_PPC_EMB_NADDR16_LO
12193 case elfcpp::R_PPC64_ADDR16_HIGHER
:
12194 case elfcpp::R_PPC64_REL16_HIGHER
:
12195 case elfcpp::R_PPC64_TPREL16_HIGHER
:
12196 Reloc::addr16_hi2(view
, value
);
12199 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
12201 // R_PPC_EMB_NADDR16_HI
12204 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
12205 case elfcpp::R_PPC64_REL16_HIGHERA
:
12206 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
12207 Reloc::addr16_ha2(view
, value
);
12210 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
12212 // R_PPC_EMB_NADDR16_HA
12215 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
12216 case elfcpp::R_PPC64_REL16_HIGHEST
:
12217 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
12218 Reloc::addr16_hi3(view
, value
);
12221 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
12223 // R_PPC_EMB_SDAI16
12226 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
12227 case elfcpp::R_PPC64_REL16_HIGHESTA
:
12228 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
12229 Reloc::addr16_ha3(view
, value
);
12232 case elfcpp::R_PPC64_DTPREL16_DS
:
12233 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
12235 // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16
12238 case elfcpp::R_PPC64_TPREL16_DS
:
12239 case elfcpp::R_PPC64_TPREL16_LO_DS
:
12241 // R_PPC_TLSGD, R_PPC_TLSLD
12244 case elfcpp::R_PPC64_ADDR16_DS
:
12245 case elfcpp::R_PPC64_ADDR16_LO_DS
:
12246 case elfcpp::R_PPC64_TOC16_DS
:
12247 case elfcpp::R_PPC64_TOC16_LO_DS
:
12248 case elfcpp::R_PPC64_GOT16_DS
:
12249 case elfcpp::R_PPC64_GOT16_LO_DS
:
12250 case elfcpp::R_PPC64_PLT16_LO_DS
:
12251 case elfcpp::R_PPC64_SECTOFF_DS
:
12252 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
12253 maybe_dq_reloc
= true;
12256 case elfcpp::R_POWERPC_ADDR14
:
12257 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
12258 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
12259 case elfcpp::R_POWERPC_REL14
:
12260 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
12261 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
12262 status
= Reloc::addr14(view
, value
, overflow
);
12265 case elfcpp::R_POWERPC_COPY
:
12266 case elfcpp::R_POWERPC_GLOB_DAT
:
12267 case elfcpp::R_POWERPC_JMP_SLOT
:
12268 case elfcpp::R_POWERPC_RELATIVE
:
12269 case elfcpp::R_POWERPC_DTPMOD
:
12270 case elfcpp::R_PPC64_JMP_IREL
:
12271 case elfcpp::R_POWERPC_IRELATIVE
:
12272 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
12273 _("unexpected reloc %u in object file"),
12277 case elfcpp::R_PPC64_TOCSAVE
:
12283 Symbol_location loc
;
12284 loc
.object
= relinfo
->object
;
12285 loc
.shndx
= relinfo
->data_shndx
;
12286 loc
.offset
= rela
.get_r_offset();
12287 const Tocsave_loc
*tocsave
= target
->tocsave_loc();
12288 if (tocsave
->find(loc
) != tocsave
->end())
12290 // If we've generated plt calls using this tocsave, then
12291 // the nop needs to be changed to save r2.
12292 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
12293 if (elfcpp::Swap
<32, big_endian
>::readval(iview
) == nop
)
12294 elfcpp::Swap
<32, big_endian
>::
12295 writeval(iview
, std_2_1
+ target
->stk_toc());
12300 case elfcpp::R_PPC_EMB_SDA2I16
:
12301 case elfcpp::R_PPC_EMB_SDA2REL
:
12304 // R_PPC64_TLSGD, R_PPC64_TLSLD
12307 case elfcpp::R_PPC64_D34
:
12308 case elfcpp::R_PPC64_D34_LO
:
12309 case elfcpp::R_PPC64_PCREL34
:
12310 case elfcpp::R_PPC64_GOT_PCREL34
:
12311 case elfcpp::R_PPC64_PLT_PCREL34
:
12312 case elfcpp::R_PPC64_PLT_PCREL34_NOTOC
:
12313 case elfcpp::R_PPC64_TPREL34
:
12314 case elfcpp::R_PPC64_DTPREL34
:
12315 case elfcpp::R_PPC64_GOT_TLSGD_PCREL34
:
12316 case elfcpp::R_PPC64_GOT_TLSLD_PCREL34
:
12317 case elfcpp::R_PPC64_GOT_TPREL_PCREL34
:
12318 case elfcpp::R_PPC64_GOT_DTPREL_PCREL34
:
12321 status
= Reloc::addr34(view
, value
, overflow
);
12324 case elfcpp::R_PPC64_D34_HI30
:
12327 Reloc::addr34_hi(view
, value
);
12330 case elfcpp::R_PPC64_D34_HA30
:
12333 Reloc::addr34_ha(view
, value
);
12336 case elfcpp::R_PPC64_D28
:
12337 case elfcpp::R_PPC64_PCREL28
:
12340 status
= Reloc::addr28(view
, value
, overflow
);
12343 case elfcpp::R_PPC64_ADDR16_HIGHER34
:
12344 case elfcpp::R_PPC64_REL16_HIGHER34
:
12347 Reloc::addr16_higher34(view
, value
);
12350 case elfcpp::R_PPC64_ADDR16_HIGHERA34
:
12351 case elfcpp::R_PPC64_REL16_HIGHERA34
:
12354 Reloc::addr16_highera34(view
, value
);
12357 case elfcpp::R_PPC64_ADDR16_HIGHEST34
:
12358 case elfcpp::R_PPC64_REL16_HIGHEST34
:
12361 Reloc::addr16_highest34(view
, value
);
12364 case elfcpp::R_PPC64_ADDR16_HIGHESTA34
:
12365 case elfcpp::R_PPC64_REL16_HIGHESTA34
:
12368 Reloc::addr16_highesta34(view
, value
);
12371 case elfcpp::R_POWERPC_PLT32
:
12372 case elfcpp::R_POWERPC_PLTREL32
:
12373 case elfcpp::R_PPC_SDAREL16
:
12374 case elfcpp::R_POWERPC_ADDR30
:
12375 case elfcpp::R_PPC64_PLT64
:
12376 case elfcpp::R_PPC64_PLTREL64
:
12377 case elfcpp::R_PPC64_PLTGOT16
:
12378 case elfcpp::R_PPC64_PLTGOT16_LO
:
12379 case elfcpp::R_PPC64_PLTGOT16_HI
:
12380 case elfcpp::R_PPC64_PLTGOT16_HA
:
12381 case elfcpp::R_PPC64_PLTGOT16_DS
:
12382 case elfcpp::R_PPC64_PLTGOT16_LO_DS
:
12383 case elfcpp::R_PPC_TOC16
:
12386 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
12387 _("unsupported reloc %u"),
12392 if (maybe_dq_reloc
)
12395 insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
12397 if ((insn
& (0x3f << 26)) == 56u << 26 /* lq */
12398 || ((insn
& (0x3f << 26)) == (61u << 26) /* lxv, stxv */
12399 && (insn
& 3) == 1))
12400 status
= Reloc::addr16_dq(view
, value
, overflow
);
12401 else if (size
== 64
12402 || (insn
& (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
12403 || (insn
& (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
12404 || (insn
& (0x3f << 26)) == 57u << 26 /* lfdp */
12405 || (insn
& (0x3f << 26)) == 61u << 26 /* stfdp */)
12406 status
= Reloc::addr16_ds(view
, value
, overflow
);
12408 status
= Reloc::addr16(view
, value
, overflow
);
12411 if (status
!= Powerpc_relocate_functions
<size
, big_endian
>::STATUS_OK
12414 && gsym
->is_undefined()
12415 && is_branch_reloc
<size
>(r_type
))))
12417 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
12418 _("relocation overflow"));
12419 if (has_stub_value
)
12420 gold_info(_("try relinking with a smaller --stub-group-size"));
12426 // Relocate section data.
12428 template<int size
, bool big_endian
>
12430 Target_powerpc
<size
, big_endian
>::relocate_section(
12431 const Relocate_info
<size
, big_endian
>* relinfo
,
12432 unsigned int sh_type
,
12433 const unsigned char* prelocs
,
12434 size_t reloc_count
,
12435 Output_section
* output_section
,
12436 bool needs_special_offset_handling
,
12437 unsigned char* view
,
12439 section_size_type view_size
,
12440 const Reloc_symbol_changes
* reloc_symbol_changes
)
12442 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
12443 typedef typename Target_powerpc
<size
, big_endian
>::Relocate Powerpc_relocate
;
12444 typedef typename Target_powerpc
<size
, big_endian
>::Relocate_comdat_behavior
12445 Powerpc_comdat_behavior
;
12446 typedef gold::Default_classify_reloc
<elfcpp::SHT_RELA
, size
, big_endian
>
12449 gold_assert(sh_type
== elfcpp::SHT_RELA
);
12451 gold::relocate_section
<size
, big_endian
, Powerpc
, Powerpc_relocate
,
12452 Powerpc_comdat_behavior
, Classify_reloc
>(
12458 needs_special_offset_handling
,
12462 reloc_symbol_changes
);
12465 template<int size
, bool big_endian
>
12466 class Powerpc_scan_relocatable_reloc
12469 typedef typename
elfcpp::Rela
<size
, big_endian
> Reltype
;
12470 static const int reloc_size
= elfcpp::Elf_sizes
<size
>::rela_size
;
12471 static const int sh_type
= elfcpp::SHT_RELA
;
12473 // Return the symbol referred to by the relocation.
12474 static inline unsigned int
12475 get_r_sym(const Reltype
* reloc
)
12476 { return elfcpp::elf_r_sym
<size
>(reloc
->get_r_info()); }
12478 // Return the type of the relocation.
12479 static inline unsigned int
12480 get_r_type(const Reltype
* reloc
)
12481 { return elfcpp::elf_r_type
<size
>(reloc
->get_r_info()); }
12483 // Return the strategy to use for a local symbol which is not a
12484 // section symbol, given the relocation type.
12485 inline Relocatable_relocs::Reloc_strategy
12486 local_non_section_strategy(unsigned int r_type
, Relobj
*, unsigned int r_sym
)
12488 if (r_type
== 0 && r_sym
== 0)
12489 return Relocatable_relocs::RELOC_DISCARD
;
12490 return Relocatable_relocs::RELOC_COPY
;
12493 // Return the strategy to use for a local symbol which is a section
12494 // symbol, given the relocation type.
12495 inline Relocatable_relocs::Reloc_strategy
12496 local_section_strategy(unsigned int, Relobj
*)
12498 return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
;
12501 // Return the strategy to use for a global symbol, given the
12502 // relocation type, the object, and the symbol index.
12503 inline Relocatable_relocs::Reloc_strategy
12504 global_strategy(unsigned int r_type
, Relobj
*, unsigned int)
12507 && (r_type
== elfcpp::R_PPC_PLTREL24
12508 || r_type
== elfcpp::R_POWERPC_PLT16_LO
12509 || r_type
== elfcpp::R_POWERPC_PLT16_HI
12510 || r_type
== elfcpp::R_POWERPC_PLT16_HA
))
12511 return Relocatable_relocs::RELOC_SPECIAL
;
12512 return Relocatable_relocs::RELOC_COPY
;
12516 // Scan the relocs during a relocatable link.
12518 template<int size
, bool big_endian
>
12520 Target_powerpc
<size
, big_endian
>::scan_relocatable_relocs(
12521 Symbol_table
* symtab
,
12523 Sized_relobj_file
<size
, big_endian
>* object
,
12524 unsigned int data_shndx
,
12525 unsigned int sh_type
,
12526 const unsigned char* prelocs
,
12527 size_t reloc_count
,
12528 Output_section
* output_section
,
12529 bool needs_special_offset_handling
,
12530 size_t local_symbol_count
,
12531 const unsigned char* plocal_symbols
,
12532 Relocatable_relocs
* rr
)
12534 typedef Powerpc_scan_relocatable_reloc
<size
, big_endian
> Scan_strategy
;
12536 gold_assert(sh_type
== elfcpp::SHT_RELA
);
12538 gold::scan_relocatable_relocs
<size
, big_endian
, Scan_strategy
>(
12546 needs_special_offset_handling
,
12547 local_symbol_count
,
12552 // Scan the relocs for --emit-relocs.
12554 template<int size
, bool big_endian
>
12556 Target_powerpc
<size
, big_endian
>::emit_relocs_scan(
12557 Symbol_table
* symtab
,
12559 Sized_relobj_file
<size
, big_endian
>* object
,
12560 unsigned int data_shndx
,
12561 unsigned int sh_type
,
12562 const unsigned char* prelocs
,
12563 size_t reloc_count
,
12564 Output_section
* output_section
,
12565 bool needs_special_offset_handling
,
12566 size_t local_symbol_count
,
12567 const unsigned char* plocal_syms
,
12568 Relocatable_relocs
* rr
)
12570 typedef gold::Default_classify_reloc
<elfcpp::SHT_RELA
, size
, big_endian
>
12572 typedef gold::Default_emit_relocs_strategy
<Classify_reloc
>
12573 Emit_relocs_strategy
;
12575 gold_assert(sh_type
== elfcpp::SHT_RELA
);
12577 gold::scan_relocatable_relocs
<size
, big_endian
, Emit_relocs_strategy
>(
12585 needs_special_offset_handling
,
12586 local_symbol_count
,
12591 // Emit relocations for a section.
12592 // This is a modified version of the function by the same name in
12593 // target-reloc.h. Using relocate_special_relocatable for
12594 // R_PPC_PLTREL24 would require duplication of the entire body of the
12595 // loop, so we may as well duplicate the whole thing.
12597 template<int size
, bool big_endian
>
12599 Target_powerpc
<size
, big_endian
>::relocate_relocs(
12600 const Relocate_info
<size
, big_endian
>* relinfo
,
12601 unsigned int sh_type
,
12602 const unsigned char* prelocs
,
12603 size_t reloc_count
,
12604 Output_section
* output_section
,
12605 typename
elfcpp::Elf_types
<size
>::Elf_Off offset_in_output_section
,
12607 Address view_address
,
12609 unsigned char* reloc_view
,
12610 section_size_type reloc_view_size
)
12612 gold_assert(sh_type
== elfcpp::SHT_RELA
);
12614 typedef typename
elfcpp::Rela
<size
, big_endian
> Reltype
;
12615 typedef typename
elfcpp::Rela_write
<size
, big_endian
> Reltype_write
;
12616 const int reloc_size
= elfcpp::Elf_sizes
<size
>::rela_size
;
12617 // Offset from start of insn to d-field reloc.
12618 const int d_offset
= big_endian
? 2 : 0;
12620 Powerpc_relobj
<size
, big_endian
>* const object
12621 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(relinfo
->object
);
12622 const unsigned int local_count
= object
->local_symbol_count();
12623 unsigned int got2_shndx
= object
->got2_shndx();
12624 Address got2_addend
= 0;
12625 if (got2_shndx
!= 0)
12627 got2_addend
= object
->get_output_section_offset(got2_shndx
);
12628 gold_assert(got2_addend
!= invalid_address
);
12631 const bool relocatable
= parameters
->options().relocatable();
12633 unsigned char* pwrite
= reloc_view
;
12634 bool zap_next
= false;
12635 for (size_t i
= 0; i
< reloc_count
; ++i
, prelocs
+= reloc_size
)
12637 Relocatable_relocs::Reloc_strategy strategy
= relinfo
->rr
->strategy(i
);
12638 if (strategy
== Relocatable_relocs::RELOC_DISCARD
)
12641 Reltype
reloc(prelocs
);
12642 Reltype_write
reloc_write(pwrite
);
12644 Address offset
= reloc
.get_r_offset();
12645 typename
elfcpp::Elf_types
<size
>::Elf_WXword r_info
= reloc
.get_r_info();
12646 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(r_info
);
12647 unsigned int r_type
= elfcpp::elf_r_type
<size
>(r_info
);
12648 const unsigned int orig_r_sym
= r_sym
;
12649 typename
elfcpp::Elf_types
<size
>::Elf_Swxword addend
12650 = reloc
.get_r_addend();
12651 const Symbol
* gsym
= NULL
;
12655 // We could arrange to discard these and other relocs for
12656 // tls optimised sequences in the strategy methods, but for
12657 // now do as BFD ld does.
12658 r_type
= elfcpp::R_POWERPC_NONE
;
12662 // Get the new symbol index.
12663 Output_section
* os
= NULL
;
12664 if (r_sym
< local_count
)
12668 case Relocatable_relocs::RELOC_COPY
:
12669 case Relocatable_relocs::RELOC_SPECIAL
:
12672 r_sym
= object
->symtab_index(r_sym
);
12673 gold_assert(r_sym
!= -1U);
12677 case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
:
12679 // We are adjusting a section symbol. We need to find
12680 // the symbol table index of the section symbol for
12681 // the output section corresponding to input section
12682 // in which this symbol is defined.
12683 gold_assert(r_sym
< local_count
);
12685 unsigned int shndx
=
12686 object
->local_symbol_input_shndx(r_sym
, &is_ordinary
);
12687 gold_assert(is_ordinary
);
12688 os
= object
->output_section(shndx
);
12689 gold_assert(os
!= NULL
);
12690 gold_assert(os
->needs_symtab_index());
12691 r_sym
= os
->symtab_index();
12696 gold_unreachable();
12701 gsym
= object
->global_symbol(r_sym
);
12702 gold_assert(gsym
!= NULL
);
12703 if (gsym
->is_forwarder())
12704 gsym
= relinfo
->symtab
->resolve_forwards(gsym
);
12706 gold_assert(gsym
->has_symtab_index());
12707 r_sym
= gsym
->symtab_index();
12710 // Get the new offset--the location in the output section where
12711 // this relocation should be applied.
12712 if (static_cast<Address
>(offset_in_output_section
) != invalid_address
)
12713 offset
+= offset_in_output_section
;
12716 section_offset_type sot_offset
=
12717 convert_types
<section_offset_type
, Address
>(offset
);
12718 section_offset_type new_sot_offset
=
12719 output_section
->output_offset(object
, relinfo
->data_shndx
,
12721 gold_assert(new_sot_offset
!= -1);
12722 offset
= new_sot_offset
;
12725 // In an object file, r_offset is an offset within the section.
12726 // In an executable or dynamic object, generated by
12727 // --emit-relocs, r_offset is an absolute address.
12730 offset
+= view_address
;
12731 if (static_cast<Address
>(offset_in_output_section
) != invalid_address
)
12732 offset
-= offset_in_output_section
;
12735 // Handle the reloc addend based on the strategy.
12736 if (strategy
== Relocatable_relocs::RELOC_COPY
)
12738 else if (strategy
== Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
)
12740 const Symbol_value
<size
>* psymval
= object
->local_symbol(orig_r_sym
);
12741 addend
= psymval
->value(object
, addend
);
12742 // In a relocatable link, the symbol value is relative to
12743 // the start of the output section. For a non-relocatable
12744 // link, we need to adjust the addend.
12747 gold_assert(os
!= NULL
);
12748 addend
-= os
->address();
12751 else if (strategy
== Relocatable_relocs::RELOC_SPECIAL
)
12755 if (addend
>= 32768)
12756 addend
+= got2_addend
;
12758 else if (r_type
== elfcpp::R_POWERPC_REL16_HA
)
12760 r_type
= elfcpp::R_POWERPC_ADDR16_HA
;
12761 addend
-= d_offset
;
12763 else if (r_type
== elfcpp::R_POWERPC_REL16_LO
)
12765 r_type
= elfcpp::R_POWERPC_ADDR16_LO
;
12766 addend
-= d_offset
+ 4;
12770 gold_unreachable();
12774 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
12775 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
12776 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HI
12777 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HA
)
12779 // First instruction of a global dynamic sequence,
12781 bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
12782 tls::Tls_optimization tls_type
= this->optimize_tls_gd(final
);
12785 case tls::TLSOPT_TO_IE
:
12786 r_type
+= (elfcpp::R_POWERPC_GOT_TPREL16
12787 - elfcpp::R_POWERPC_GOT_TLSGD16
);
12789 case tls::TLSOPT_TO_LE
:
12790 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
12791 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
12792 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
12795 r_type
= elfcpp::R_POWERPC_NONE
;
12796 offset
-= d_offset
;
12803 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
12804 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
12805 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HI
12806 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HA
)
12808 // First instruction of a local dynamic sequence,
12810 tls::Tls_optimization tls_type
= this->optimize_tls_ld();
12811 if (tls_type
== tls::TLSOPT_TO_LE
)
12813 if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
12814 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
)
12816 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
12817 const Output_section
* os
= relinfo
->layout
->tls_segment()
12819 gold_assert(os
!= NULL
);
12820 gold_assert(os
->needs_symtab_index());
12821 r_sym
= os
->symtab_index();
12822 addend
= dtp_offset
;
12826 r_type
= elfcpp::R_POWERPC_NONE
;
12827 offset
-= d_offset
;
12831 else if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
12832 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
12833 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HI
12834 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HA
)
12836 // First instruction of initial exec sequence.
12837 bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
12838 if (this->optimize_tls_ie(final
) == tls::TLSOPT_TO_LE
)
12840 if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
12841 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
)
12842 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
12845 r_type
= elfcpp::R_POWERPC_NONE
;
12846 offset
-= d_offset
;
12850 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
12851 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
12853 // Second instruction of a global dynamic sequence,
12854 // the __tls_get_addr call
12855 bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
12856 tls::Tls_optimization tls_type
= this->optimize_tls_gd(final
);
12859 case tls::TLSOPT_TO_IE
:
12860 r_type
= elfcpp::R_POWERPC_NONE
;
12863 case tls::TLSOPT_TO_LE
:
12864 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
12865 offset
+= d_offset
;
12872 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
12873 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
12875 // Second instruction of a local dynamic sequence,
12876 // the __tls_get_addr call
12877 tls::Tls_optimization tls_type
= this->optimize_tls_ld();
12878 if (tls_type
== tls::TLSOPT_TO_LE
)
12880 const Output_section
* os
= relinfo
->layout
->tls_segment()
12882 gold_assert(os
!= NULL
);
12883 gold_assert(os
->needs_symtab_index());
12884 r_sym
= os
->symtab_index();
12885 addend
= dtp_offset
;
12886 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
12887 offset
+= d_offset
;
12891 else if (r_type
== elfcpp::R_POWERPC_TLS
)
12893 // Second instruction of an initial exec sequence
12894 bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
12895 if (this->optimize_tls_ie(final
) == tls::TLSOPT_TO_LE
)
12897 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
12898 offset
+= d_offset
;
12903 reloc_write
.put_r_offset(offset
);
12904 reloc_write
.put_r_info(elfcpp::elf_r_info
<size
>(r_sym
, r_type
));
12905 reloc_write
.put_r_addend(addend
);
12907 pwrite
+= reloc_size
;
12910 gold_assert(static_cast<section_size_type
>(pwrite
- reloc_view
)
12911 == reloc_view_size
);
12914 // Return the value to use for a dynamic symbol which requires special
12915 // treatment. This is how we support equality comparisons of function
12916 // pointers across shared library boundaries, as described in the
12917 // processor specific ABI supplement.
12919 template<int size
, bool big_endian
>
12921 Target_powerpc
<size
, big_endian
>::do_dynsym_value(const Symbol
* gsym
) const
12925 gold_assert(gsym
->is_from_dynobj() && gsym
->has_plt_offset());
12926 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
12927 p
!= this->stub_tables_
.end();
12930 const typename Stub_table
<size
, big_endian
>::Plt_stub_ent
* ent
12931 = (*p
)->find_plt_call_entry(gsym
);
12933 return (*p
)->stub_address() + ent
->off_
;
12936 else if (this->abiversion() >= 2)
12938 Address off
= this->glink_section()->find_global_entry(gsym
);
12939 if (off
!= invalid_address
)
12940 return this->glink_section()->global_entry_address() + off
;
12942 gold_unreachable();
12945 // Return the PLT address to use for a local symbol.
12946 template<int size
, bool big_endian
>
12948 Target_powerpc
<size
, big_endian
>::do_plt_address_for_local(
12949 const Relobj
* object
,
12950 unsigned int symndx
) const
12954 const Sized_relobj
<size
, big_endian
>* relobj
12955 = static_cast<const Sized_relobj
<size
, big_endian
>*>(object
);
12956 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
12957 p
!= this->stub_tables_
.end();
12960 const typename Stub_table
<size
, big_endian
>::Plt_stub_ent
* ent
12961 = (*p
)->find_plt_call_entry(relobj
->sized_relobj(), symndx
);
12963 return (*p
)->stub_address() + ent
->off_
;
12966 gold_unreachable();
12969 // Return the PLT address to use for a global symbol.
12970 template<int size
, bool big_endian
>
12972 Target_powerpc
<size
, big_endian
>::do_plt_address_for_global(
12973 const Symbol
* gsym
) const
12977 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
12978 p
!= this->stub_tables_
.end();
12981 const typename Stub_table
<size
, big_endian
>::Plt_stub_ent
* ent
12982 = (*p
)->find_plt_call_entry(gsym
);
12984 return (*p
)->stub_address() + ent
->off_
;
12987 else if (this->abiversion() >= 2)
12989 Address off
= this->glink_section()->find_global_entry(gsym
);
12990 if (off
!= invalid_address
)
12991 return this->glink_section()->global_entry_address() + off
;
12993 gold_unreachable();
12996 // Return the offset to use for the GOT_INDX'th got entry which is
12997 // for a local tls symbol specified by OBJECT, SYMNDX.
12998 template<int size
, bool big_endian
>
13000 Target_powerpc
<size
, big_endian
>::do_tls_offset_for_local(
13001 const Relobj
* object
,
13002 unsigned int symndx
,
13003 Output_data_got_base
* got
,
13004 unsigned int got_indx
,
13005 uint64_t addend
) const
13007 const Powerpc_relobj
<size
, big_endian
>* ppc_object
13008 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>(object
);
13009 if (ppc_object
->local_symbol(symndx
)->is_tls_symbol())
13011 for (Got_type got_type
= (size
== 32
13012 ? GOT_TYPE_SMALL_TLSGD
: GOT_TYPE_TLSGD
);
13013 got_type
<= GOT_TYPE_SMALL_TPREL
;
13014 got_type
= Got_type(got_type
+ 1))
13015 if (got_type
!= GOT_TYPE_SMALL
13016 && ppc_object
->local_has_got_offset(symndx
, got_type
, addend
))
13019 = ppc_object
->local_got_offset(symndx
, got_type
, addend
);
13020 if ((got_type
& ~GOT_TYPE_SMALL
) == GOT_TYPE_TLSGD
)
13022 if (off
== got_indx
* (size
/ 8)
13023 && (size
== 32 || got
== this->got_section(got_type
)))
13025 if ((got_type
& ~GOT_TYPE_SMALL
) == GOT_TYPE_TPREL
)
13028 return -dtp_offset
;
13032 gold_unreachable();
13035 // Return the offset to use for the GOT_INDX'th got entry which is
13036 // for global tls symbol GSYM.
13037 template<int size
, bool big_endian
>
13039 Target_powerpc
<size
, big_endian
>::do_tls_offset_for_global(
13041 Output_data_got_base
* got
,
13042 unsigned int got_indx
,
13043 uint64_t addend
) const
13045 if (gsym
->type() == elfcpp::STT_TLS
)
13047 for (Got_type got_type
= (size
== 32
13048 ? GOT_TYPE_SMALL_TLSGD
: GOT_TYPE_TLSGD
);
13049 got_type
<= GOT_TYPE_SMALL_TPREL
;
13050 got_type
= Got_type(got_type
+ 1))
13051 if (got_type
!= GOT_TYPE_SMALL
13052 && gsym
->has_got_offset(got_type
, addend
))
13054 unsigned int off
= gsym
->got_offset(got_type
, addend
);
13055 if ((got_type
& ~GOT_TYPE_SMALL
) == GOT_TYPE_TLSGD
)
13057 if (off
== got_indx
* (size
/ 8)
13058 && (size
== 32 || got
== this->got_section(got_type
)))
13060 if ((got_type
& ~GOT_TYPE_SMALL
) == GOT_TYPE_TPREL
)
13063 return -dtp_offset
;
13067 gold_unreachable();
13070 // The selector for powerpc object files.
13072 template<int size
, bool big_endian
>
13073 class Target_selector_powerpc
: public Target_selector
13076 Target_selector_powerpc()
13077 : Target_selector(size
== 64 ? elfcpp::EM_PPC64
: elfcpp::EM_PPC
,
13080 ? (big_endian
? "elf64-powerpc" : "elf64-powerpcle")
13081 : (big_endian
? "elf32-powerpc" : "elf32-powerpcle")),
13083 ? (big_endian
? "elf64ppc" : "elf64lppc")
13084 : (big_endian
? "elf32ppc" : "elf32lppc")))
13088 do_instantiate_target()
13089 { return new Target_powerpc
<size
, big_endian
>(); }
13092 Target_selector_powerpc
<32, true> target_selector_ppc32
;
13093 Target_selector_powerpc
<32, false> target_selector_ppc32le
;
13094 Target_selector_powerpc
<64, true> target_selector_ppc64
;
13095 Target_selector_powerpc
<64, false> target_selector_ppc64le
;
13097 // Instantiate these constants for -O0
13098 template<int size
, bool big_endian
>
13099 const typename Output_data_glink
<size
, big_endian
>::Address
13100 Output_data_glink
<size
, big_endian
>::invalid_address
;
13101 template<int size
, bool big_endian
>
13102 const typename Stub_table
<size
, big_endian
>::Address
13103 Stub_table
<size
, big_endian
>::invalid_address
;
13104 template<int size
, bool big_endian
>
13105 const typename Target_powerpc
<size
, big_endian
>::Address
13106 Target_powerpc
<size
, big_endian
>::invalid_address
;
13108 } // End anonymous namespace.