1 // powerpc.cc -- powerpc target support for gold.
3 // Copyright (C) 2008-2020 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
));
319 // Return offset in output GOT section that this object will use
320 // as a TOC pointer. Won't be just a constant with multi-toc support.
322 toc_base_offset() const
326 set_has_small_toc_reloc()
327 { has_small_toc_reloc_
= true; }
330 has_small_toc_reloc() const
331 { return has_small_toc_reloc_
; }
334 set_has_14bit_branch(unsigned int shndx
)
336 if (shndx
>= this->has14_
.size())
337 this->has14_
.resize(shndx
+ 1);
338 this->has14_
[shndx
] = true;
342 has_14bit_branch(unsigned int shndx
) const
343 { return shndx
< this->has14_
.size() && this->has14_
[shndx
]; }
346 set_stub_table(unsigned int shndx
, unsigned int stub_index
)
348 if (shndx
>= this->stub_table_index_
.size())
349 this->stub_table_index_
.resize(shndx
+ 1, -1);
350 this->stub_table_index_
[shndx
] = stub_index
;
353 Stub_table
<size
, big_endian
>*
354 stub_table(unsigned int shndx
)
356 if (shndx
< this->stub_table_index_
.size())
358 Target_powerpc
<size
, big_endian
>* target
359 = static_cast<Target_powerpc
<size
, big_endian
>*>(
360 parameters
->sized_target
<size
, big_endian
>());
361 unsigned int indx
= this->stub_table_index_
[shndx
];
362 if (indx
< target
->stub_tables().size())
363 return target
->stub_tables()[indx
];
371 this->stub_table_index_
.clear();
376 { return this->uniq_
; }
380 { return this->e_flags_
& elfcpp::EF_PPC64_ABI
; }
382 // Set ABI version for input and output
384 set_abiversion(int ver
);
387 st_other (unsigned int symndx
) const
389 return this->st_other_
[symndx
];
393 ppc64_local_entry_offset(const Symbol
* sym
) const
394 { return elfcpp::ppc64_decode_local_entry(sym
->nonvis() >> 3); }
397 ppc64_local_entry_offset(unsigned int symndx
) const
398 { return elfcpp::ppc64_decode_local_entry(this->st_other_
[symndx
] >> 5); }
401 ppc64_needs_toc(const Symbol
* sym
) const
402 { return sym
->nonvis() > 1 << 3; }
405 ppc64_needs_toc(unsigned int symndx
) const
406 { return this->st_other_
[symndx
] > 1 << 5; }
408 // The contents of the .gnu.attributes section if there is one.
409 const Attributes_section_data
*
410 attributes_section_data() const
411 { return this->attributes_section_data_
; }
422 // Return index into opd_ent_ array for .opd entry at OFF.
423 // .opd entries are 24 bytes long, but they can be spaced 16 bytes
424 // apart when the language doesn't use the last 8-byte word, the
425 // environment pointer. Thus dividing the entry section offset by
426 // 16 will give an index into opd_ent_ that works for either layout
427 // of .opd. (It leaves some elements of the vector unused when .opd
428 // entries are spaced 24 bytes apart, but we don't know the spacing
429 // until relocations are processed, and in any case it is possible
430 // for an object to have some entries spaced 16 bytes apart and
431 // others 24 bytes apart.)
433 opd_ent_ndx(size_t off
) const
436 // Per object unique identifier
439 // For 32-bit the .got2 section shdnx, for 64-bit the .opd section shndx.
440 unsigned int special_
;
442 // For 64-bit the .rela.toc and .toc section shdnx.
443 unsigned int relatoc_
;
446 // For 64-bit, whether this object uses small model relocs to access
448 bool has_small_toc_reloc_
;
450 // Set at the start of gc_process_relocs, when we know opd_ent_
451 // vector is valid. The flag could be made atomic and set in
452 // do_read_relocs with memory_order_release and then tested with
453 // memory_order_acquire, potentially resulting in fewer entries in
458 elfcpp::Elf_Word e_flags_
;
460 // For 64-bit, an array with one entry per 64-bit word in the .toc
461 // section, set if accesses using that word cannot be optimised.
462 std::vector
<bool> no_toc_opt_
;
464 // The first 8-byte word of an OPD entry gives the address of the
465 // entry point of the function. Relocatable object files have a
466 // relocation on this word. The following vector records the
467 // section and offset specified by these relocations.
468 std::vector
<Opd_ent
> opd_ent_
;
470 // References made to this object's .opd section when running
471 // gc_process_relocs for another object, before the opd_ent_ vector
472 // is valid for this object.
473 Access_from access_from_map_
;
475 // Whether input section has a 14-bit branch reloc.
476 std::vector
<bool> has14_
;
478 // The stub table to use for a given input section.
479 std::vector
<unsigned int> stub_table_index_
;
481 // ELF st_other field for local symbols.
482 std::vector
<unsigned char> st_other_
;
484 // Object attributes if there is a .gnu.attributes section.
485 Attributes_section_data
* attributes_section_data_
;
488 template<int size
, bool big_endian
>
489 class Powerpc_dynobj
: public Sized_dynobj
<size
, big_endian
>
492 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
494 Powerpc_dynobj(const std::string
& name
, Input_file
* input_file
, off_t offset
,
495 const typename
elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
496 : Sized_dynobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
),
497 opd_shndx_(0), e_flags_(ehdr
.get_e_flags()), opd_ent_(),
498 attributes_section_data_(NULL
)
500 this->set_abiversion(0);
504 { delete this->attributes_section_data_
; }
506 // Call Sized_dynobj::do_read_symbols to read the symbols then
507 // read .opd from a dynamic object, filling in opd_ent_ vector,
509 do_read_symbols(Read_symbols_data
*);
511 // The .opd section shndx.
515 return this->opd_shndx_
;
518 // The .opd section address.
522 return this->opd_address_
;
525 // Init OPD entry arrays.
527 init_opd(size_t opd_size
)
529 size_t count
= this->opd_ent_ndx(opd_size
);
530 this->opd_ent_
.resize(count
);
533 // Return section and offset of function entry for .opd + R_OFF.
535 get_opd_ent(Address r_off
, Address
* value
= NULL
) const
537 size_t ndx
= this->opd_ent_ndx(r_off
);
538 gold_assert(ndx
< this->opd_ent_
.size());
539 gold_assert(this->opd_ent_
[ndx
].shndx
!= 0);
541 *value
= this->opd_ent_
[ndx
].off
;
542 return this->opd_ent_
[ndx
].shndx
;
545 // Set section and offset of function entry for .opd + R_OFF.
547 set_opd_ent(Address r_off
, unsigned int shndx
, Address value
)
549 size_t ndx
= this->opd_ent_ndx(r_off
);
550 gold_assert(ndx
< this->opd_ent_
.size());
551 this->opd_ent_
[ndx
].shndx
= shndx
;
552 this->opd_ent_
[ndx
].off
= value
;
557 { return this->e_flags_
& elfcpp::EF_PPC64_ABI
; }
559 // Set ABI version for input and output.
561 set_abiversion(int ver
);
563 // The contents of the .gnu.attributes section if there is one.
564 const Attributes_section_data
*
565 attributes_section_data() const
566 { return this->attributes_section_data_
; }
569 // Used to specify extent of executable sections.
572 Sec_info(Address start_
, Address len_
, unsigned int shndx_
)
573 : start(start_
), len(len_
), shndx(shndx_
)
577 operator<(const Sec_info
& that
) const
578 { return this->start
< that
.start
; }
591 // Return index into opd_ent_ array for .opd entry at OFF.
593 opd_ent_ndx(size_t off
) const
596 // For 64-bit the .opd section shndx and address.
597 unsigned int opd_shndx_
;
598 Address opd_address_
;
601 elfcpp::Elf_Word e_flags_
;
603 // The first 8-byte word of an OPD entry gives the address of the
604 // entry point of the function. Records the section and offset
605 // corresponding to the address. Note that in dynamic objects,
606 // offset is *not* relative to the section.
607 std::vector
<Opd_ent
> opd_ent_
;
609 // Object attributes if there is a .gnu.attributes section.
610 Attributes_section_data
* attributes_section_data_
;
613 // Powerpc_copy_relocs class. Needed to peek at dynamic relocs the
614 // base class will emit.
616 template<int sh_type
, int size
, bool big_endian
>
617 class Powerpc_copy_relocs
: public Copy_relocs
<sh_type
, size
, big_endian
>
620 Powerpc_copy_relocs()
621 : Copy_relocs
<sh_type
, size
, big_endian
>(elfcpp::R_POWERPC_COPY
)
624 // Emit any saved relocations which turn out to be needed. This is
625 // called after all the relocs have been scanned.
627 emit(Output_data_reloc
<sh_type
, true, size
, big_endian
>*);
630 template<int size
, bool big_endian
>
631 class Target_powerpc
: public Sized_target
<size
, big_endian
>
635 Output_data_reloc
<elfcpp::SHT_RELA
, true, size
, big_endian
> Reloc_section
;
636 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
637 typedef typename
elfcpp::Elf_types
<size
>::Elf_Swxword Signed_address
;
638 typedef Unordered_set
<Symbol_location
, Symbol_location_hash
> Tocsave_loc
;
639 static const Address invalid_address
= static_cast<Address
>(0) - 1;
640 // Offset of tp and dtp pointers from start of TLS block.
641 static const Address tp_offset
= 0x7000;
642 static const Address dtp_offset
= 0x8000;
645 : Sized_target
<size
, big_endian
>(&powerpc_info
),
646 got_(NULL
), plt_(NULL
), iplt_(NULL
), lplt_(NULL
), brlt_section_(NULL
),
647 glink_(NULL
), rela_dyn_(NULL
), copy_relocs_(),
648 tlsld_got_offset_(-1U),
649 stub_tables_(), branch_lookup_table_(), branch_info_(), tocsave_loc_(),
650 power10_relocs_(false), plt_thread_safe_(false), plt_localentry0_(false),
651 plt_localentry0_init_(false), has_localentry0_(false),
652 has_tls_get_addr_opt_(false),
653 tprel_opt_(parameters
->options().tls_optimize()),
654 relax_failed_(false), relax_fail_count_(0),
655 stub_group_size_(0), savres_section_(0),
656 tls_get_addr_(NULL
), tls_get_addr_opt_(NULL
),
657 attributes_section_data_(NULL
),
658 last_fp_(NULL
), last_ld_(NULL
), last_vec_(NULL
), last_struct_(NULL
)
662 // Process the relocations to determine unreferenced sections for
663 // garbage collection.
665 gc_process_relocs(Symbol_table
* symtab
,
667 Sized_relobj_file
<size
, big_endian
>* object
,
668 unsigned int data_shndx
,
669 unsigned int sh_type
,
670 const unsigned char* prelocs
,
672 Output_section
* output_section
,
673 bool needs_special_offset_handling
,
674 size_t local_symbol_count
,
675 const unsigned char* plocal_symbols
);
677 // Scan the relocations to look for symbol adjustments.
679 scan_relocs(Symbol_table
* symtab
,
681 Sized_relobj_file
<size
, big_endian
>* object
,
682 unsigned int data_shndx
,
683 unsigned int sh_type
,
684 const unsigned char* prelocs
,
686 Output_section
* output_section
,
687 bool needs_special_offset_handling
,
688 size_t local_symbol_count
,
689 const unsigned char* plocal_symbols
);
691 // Map input .toc section to output .got section.
693 do_output_section_name(const Relobj
*, const char* name
, size_t* plen
) const
695 if (size
== 64 && strcmp(name
, ".toc") == 0)
703 // Provide linker defined save/restore functions.
705 define_save_restore_funcs(Layout
*, Symbol_table
*);
707 // No stubs unless a final link.
710 { return !parameters
->options().relocatable(); }
713 do_relax(int, const Input_objects
*, Symbol_table
*, Layout
*, const Task
*);
716 do_plt_fde_location(const Output_data
*, unsigned char*,
717 uint64_t*, off_t
*) const;
719 // Stash info about branches, for stub generation.
721 push_branch(Powerpc_relobj
<size
, big_endian
>* ppc_object
,
722 unsigned int data_shndx
, Address r_offset
,
723 unsigned int r_type
, unsigned int r_sym
, Address addend
)
725 Branch_info
info(ppc_object
, data_shndx
, r_offset
, r_type
, r_sym
, addend
);
726 this->branch_info_
.push_back(info
);
727 if (r_type
== elfcpp::R_POWERPC_REL14
728 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
729 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
)
730 ppc_object
->set_has_14bit_branch(data_shndx
);
733 // Return whether the last branch is a plt call, and if so, mark the
734 // branch as having an R_PPC64_TOCSAVE.
736 mark_pltcall(Powerpc_relobj
<size
, big_endian
>* ppc_object
,
737 unsigned int data_shndx
, Address r_offset
, Symbol_table
* symtab
)
740 && !this->branch_info_
.empty()
741 && this->branch_info_
.back().mark_pltcall(ppc_object
, data_shndx
,
742 r_offset
, this, symtab
));
745 // Say the given location, that of a nop in a function prologue with
746 // an R_PPC64_TOCSAVE reloc, will be used to save r2.
747 // R_PPC64_TOCSAVE relocs on nops following calls point at this nop.
749 add_tocsave(Powerpc_relobj
<size
, big_endian
>* ppc_object
,
750 unsigned int shndx
, Address offset
)
753 loc
.object
= ppc_object
;
756 this->tocsave_loc_
.insert(loc
);
763 return &this->tocsave_loc_
;
767 do_define_standard_symbols(Symbol_table
*, Layout
*);
769 // Finalize the sections.
771 do_finalize_sections(Layout
*, const Input_objects
*, Symbol_table
*);
773 // Return the value to use for a dynamic which requires special
776 do_dynsym_value(const Symbol
*) const;
778 // Return the PLT address to use for a local symbol.
780 do_plt_address_for_local(const Relobj
*, unsigned int) const;
782 // Return the PLT address to use for a global symbol.
784 do_plt_address_for_global(const Symbol
*) const;
786 // Return the offset to use for the GOT_INDX'th got entry which is
787 // for a local tls symbol specified by OBJECT, SYMNDX.
789 do_tls_offset_for_local(const Relobj
* object
,
791 unsigned int got_indx
) const;
793 // Return the offset to use for the GOT_INDX'th got entry which is
794 // for global tls symbol GSYM.
796 do_tls_offset_for_global(Symbol
* gsym
, unsigned int got_indx
) const;
799 do_function_location(Symbol_location
*) const;
802 do_can_check_for_function_pointers() const
805 // Adjust -fsplit-stack code which calls non-split-stack code.
807 do_calls_non_split(Relobj
* object
, unsigned int shndx
,
808 section_offset_type fnoffset
, section_size_type fnsize
,
809 const unsigned char* prelocs
, size_t reloc_count
,
810 unsigned char* view
, section_size_type view_size
,
811 std::string
* from
, std::string
* to
) const;
813 // Relocate a section.
815 relocate_section(const Relocate_info
<size
, big_endian
>*,
816 unsigned int sh_type
,
817 const unsigned char* prelocs
,
819 Output_section
* output_section
,
820 bool needs_special_offset_handling
,
822 Address view_address
,
823 section_size_type view_size
,
824 const Reloc_symbol_changes
*);
826 // Scan the relocs during a relocatable link.
828 scan_relocatable_relocs(Symbol_table
* symtab
,
830 Sized_relobj_file
<size
, big_endian
>* object
,
831 unsigned int data_shndx
,
832 unsigned int sh_type
,
833 const unsigned char* prelocs
,
835 Output_section
* output_section
,
836 bool needs_special_offset_handling
,
837 size_t local_symbol_count
,
838 const unsigned char* plocal_symbols
,
839 Relocatable_relocs
*);
841 // Scan the relocs for --emit-relocs.
843 emit_relocs_scan(Symbol_table
* symtab
,
845 Sized_relobj_file
<size
, big_endian
>* object
,
846 unsigned int data_shndx
,
847 unsigned int sh_type
,
848 const unsigned char* prelocs
,
850 Output_section
* output_section
,
851 bool needs_special_offset_handling
,
852 size_t local_symbol_count
,
853 const unsigned char* plocal_syms
,
854 Relocatable_relocs
* rr
);
856 // Emit relocations for a section.
858 relocate_relocs(const Relocate_info
<size
, big_endian
>*,
859 unsigned int sh_type
,
860 const unsigned char* prelocs
,
862 Output_section
* output_section
,
863 typename
elfcpp::Elf_types
<size
>::Elf_Off
864 offset_in_output_section
,
866 Address view_address
,
868 unsigned char* reloc_view
,
869 section_size_type reloc_view_size
);
871 // Return whether SYM is defined by the ABI.
873 do_is_defined_by_abi(const Symbol
* sym
) const
875 return strcmp(sym
->name(), "__tls_get_addr") == 0;
878 // Return the size of the GOT section.
882 gold_assert(this->got_
!= NULL
);
883 return this->got_
->data_size();
886 // Get the PLT section.
887 const Output_data_plt_powerpc
<size
, big_endian
>*
890 gold_assert(this->plt_
!= NULL
);
894 // Get the IPLT section.
895 const Output_data_plt_powerpc
<size
, big_endian
>*
898 gold_assert(this->iplt_
!= NULL
);
902 // Get the LPLT section.
903 const Output_data_plt_powerpc
<size
, big_endian
>*
909 // Return the plt offset and section for the given global sym.
911 plt_off(const Symbol
* gsym
,
912 const Output_data_plt_powerpc
<size
, big_endian
>** sec
) const
914 if (gsym
->type() == elfcpp::STT_GNU_IFUNC
915 && gsym
->can_use_relative_reloc(false))
916 *sec
= this->iplt_section();
918 *sec
= this->plt_section();
919 return gsym
->plt_offset();
922 // Return the plt offset and section for the given local sym.
924 plt_off(const Sized_relobj_file
<size
, big_endian
>* relobj
,
925 unsigned int local_sym_index
,
926 const Output_data_plt_powerpc
<size
, big_endian
>** sec
) const
928 const Symbol_value
<size
>* lsym
= relobj
->local_symbol(local_sym_index
);
929 if (lsym
->is_ifunc_symbol())
930 *sec
= this->iplt_section();
932 *sec
= this->lplt_section();
933 return relobj
->local_plt_offset(local_sym_index
);
936 // Get the .glink section.
937 const Output_data_glink
<size
, big_endian
>*
938 glink_section() const
940 gold_assert(this->glink_
!= NULL
);
944 Output_data_glink
<size
, big_endian
>*
947 gold_assert(this->glink_
!= NULL
);
951 bool has_glink() const
952 { return this->glink_
!= NULL
; }
954 // Get the GOT section.
955 const Output_data_got_powerpc
<size
, big_endian
>*
958 gold_assert(this->got_
!= NULL
);
962 // Get the GOT section, creating it if necessary.
963 Output_data_got_powerpc
<size
, big_endian
>*
964 got_section(Symbol_table
*, Layout
*);
967 do_make_elf_object(const std::string
&, Input_file
*, off_t
,
968 const elfcpp::Ehdr
<size
, big_endian
>&);
970 // Return the number of entries in the GOT.
972 got_entry_count() const
974 if (this->got_
== NULL
)
976 return this->got_size() / (size
/ 8);
979 // Return the number of entries in the PLT.
981 plt_entry_count() const;
983 // Return the offset of the first non-reserved PLT entry.
985 first_plt_entry_offset() const
989 if (this->abiversion() >= 2)
994 // Return the size of each PLT entry.
996 plt_entry_size() const
1000 if (this->abiversion() >= 2)
1005 Output_data_save_res
<size
, big_endian
>*
1006 savres_section() const
1008 return this->savres_section_
;
1011 // Add any special sections for this symbol to the gc work list.
1012 // For powerpc64, this adds the code section of a function
1015 do_gc_mark_symbol(Symbol_table
* symtab
, Symbol
* sym
) const;
1017 // Handle target specific gc actions when adding a gc reference from
1018 // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX
1019 // and DST_OFF. For powerpc64, this adds a referenc to the code
1020 // section of a function descriptor.
1022 do_gc_add_reference(Symbol_table
* symtab
,
1024 unsigned int src_shndx
,
1026 unsigned int dst_shndx
,
1027 Address dst_off
) const;
1029 typedef std::vector
<Stub_table
<size
, big_endian
>*> Stub_tables
;
1032 { return this->stub_tables_
; }
1034 const Output_data_brlt_powerpc
<size
, big_endian
>*
1035 brlt_section() const
1036 { return this->brlt_section_
; }
1039 add_branch_lookup_table(Address to
)
1041 unsigned int off
= this->branch_lookup_table_
.size() * (size
/ 8);
1042 this->branch_lookup_table_
.insert(std::make_pair(to
, off
));
1046 find_branch_lookup_table(Address to
)
1048 typename
Branch_lookup_table::const_iterator p
1049 = this->branch_lookup_table_
.find(to
);
1050 return p
== this->branch_lookup_table_
.end() ? invalid_address
: p
->second
;
1054 write_branch_lookup_table(unsigned char *oview
)
1056 for (typename
Branch_lookup_table::const_iterator p
1057 = this->branch_lookup_table_
.begin();
1058 p
!= this->branch_lookup_table_
.end();
1061 elfcpp::Swap
<size
, big_endian
>::writeval(oview
+ p
->second
, p
->first
);
1065 // Wrapper used after relax to define a local symbol in output data,
1066 // from the end if value < 0.
1068 define_local(Symbol_table
* symtab
, const char* name
,
1069 Output_data
* od
, Address value
, unsigned int symsize
)
1072 = symtab
->define_in_output_data(name
, NULL
, Symbol_table::PREDEFINED
,
1073 od
, value
, symsize
, elfcpp::STT_NOTYPE
,
1074 elfcpp::STB_LOCAL
, elfcpp::STV_HIDDEN
, 0,
1075 static_cast<Signed_address
>(value
) < 0,
1077 // We are creating this symbol late, so need to fix up things
1078 // done early in Layout::finalize.
1079 sym
->set_dynsym_index(-1U);
1083 set_power10_relocs()
1085 this->power10_relocs_
= true;
1089 power10_stubs() const
1091 return (this->power10_relocs_
1092 && (parameters
->options().power10_stubs_enum()
1093 != General_options::POWER10_STUBS_NO
));
1097 power10_stubs_auto() const
1099 return (parameters
->options().power10_stubs_enum()
1100 == General_options::POWER10_STUBS_AUTO
);
1104 plt_thread_safe() const
1105 { return this->plt_thread_safe_
; }
1108 plt_localentry0() const
1109 { return this->plt_localentry0_
; }
1112 has_localentry0() const
1113 { return this->has_localentry0_
; }
1116 set_has_localentry0()
1118 this->has_localentry0_
= true;
1122 is_elfv2_localentry0(const Symbol
* gsym
) const
1125 && this->abiversion() >= 2
1126 && this->plt_localentry0()
1127 && gsym
->type() == elfcpp::STT_FUNC
1128 && gsym
->is_defined()
1129 && gsym
->nonvis() >> 3 == 0
1130 && !gsym
->non_zero_localentry());
1134 is_elfv2_localentry0(const Sized_relobj_file
<size
, big_endian
>* object
,
1135 unsigned int r_sym
) const
1137 const Powerpc_relobj
<size
, big_endian
>* ppc_object
1138 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>(object
);
1141 && this->abiversion() >= 2
1142 && this->plt_localentry0()
1143 && ppc_object
->st_other(r_sym
) >> 5 == 0)
1145 const Symbol_value
<size
>* psymval
= object
->local_symbol(r_sym
);
1147 if (!psymval
->is_ifunc_symbol()
1148 && psymval
->input_shndx(&is_ordinary
) != elfcpp::SHN_UNDEF
1157 { return this->tprel_opt_
; }
1160 set_tprel_opt(bool val
)
1161 { this->tprel_opt_
= val
; }
1163 // Remember any symbols seen with non-zero localentry, even those
1164 // not providing a definition
1166 resolve(Symbol
* to
, const elfcpp::Sym
<size
, big_endian
>& sym
, Object
*,
1171 unsigned char st_other
= sym
.get_st_other();
1172 if ((st_other
& elfcpp::STO_PPC64_LOCAL_MASK
) != 0)
1173 to
->set_non_zero_localentry();
1175 // We haven't resolved anything, continue normal processing.
1181 { return this->processor_specific_flags() & elfcpp::EF_PPC64_ABI
; }
1184 set_abiversion(int ver
)
1186 elfcpp::Elf_Word flags
= this->processor_specific_flags();
1187 flags
&= ~elfcpp::EF_PPC64_ABI
;
1188 flags
|= ver
& elfcpp::EF_PPC64_ABI
;
1189 this->set_processor_specific_flags(flags
);
1193 tls_get_addr_opt() const
1194 { return this->tls_get_addr_opt_
; }
1197 tls_get_addr() const
1198 { return this->tls_get_addr_
; }
1200 // If optimizing __tls_get_addr calls, whether this is the
1201 // "__tls_get_addr" symbol.
1203 is_tls_get_addr_opt(const Symbol
* gsym
) const
1205 return this->tls_get_addr_opt_
&& (gsym
== this->tls_get_addr_
1206 || gsym
== this->tls_get_addr_opt_
);
1210 replace_tls_get_addr(const Symbol
* gsym
) const
1211 { return this->tls_get_addr_opt_
&& gsym
== this->tls_get_addr_
; }
1214 set_has_tls_get_addr_opt()
1215 { this->has_tls_get_addr_opt_
= true; }
1217 // Offset to toc save stack slot
1220 { return this->abiversion() < 2 ? 40 : 24; }
1222 // Offset to linker save stack slot. ELFv2 doesn't have a linker word,
1223 // so use the CR save slot. Used only by __tls_get_addr call stub,
1224 // relying on __tls_get_addr not saving CR itself.
1227 { return this->abiversion() < 2 ? 32 : 8; }
1229 // Merge object attributes from input object with those in the output.
1231 merge_object_attributes(const Object
*, const Attributes_section_data
*);
1247 : tls_get_addr_state_(NOT_EXPECTED
),
1248 relinfo_(NULL
), relnum_(0), r_offset_(0)
1253 if (this->tls_get_addr_state_
!= NOT_EXPECTED
)
1260 if (this->relinfo_
!= NULL
)
1261 gold_error_at_location(this->relinfo_
, this->relnum_
, this->r_offset_
,
1262 _("missing expected __tls_get_addr call"));
1266 expect_tls_get_addr_call(
1267 const Relocate_info
<size
, big_endian
>* relinfo
,
1271 this->tls_get_addr_state_
= EXPECTED
;
1272 this->relinfo_
= relinfo
;
1273 this->relnum_
= relnum
;
1274 this->r_offset_
= r_offset
;
1278 expect_tls_get_addr_call()
1279 { this->tls_get_addr_state_
= EXPECTED
; }
1282 skip_next_tls_get_addr_call()
1283 {this->tls_get_addr_state_
= SKIP
; }
1286 maybe_skip_tls_get_addr_call(Target_powerpc
<size
, big_endian
>* target
,
1287 unsigned int r_type
, const Symbol
* gsym
)
1290 = ((r_type
== elfcpp::R_POWERPC_REL24
1291 || (size
== 64 && r_type
== elfcpp::R_PPC64_REL24_NOTOC
)
1292 || r_type
== elfcpp::R_PPC_PLTREL24
1293 || is_plt16_reloc
<size
>(r_type
)
1294 || r_type
== elfcpp::R_PPC64_PLT_PCREL34
1295 || r_type
== elfcpp::R_PPC64_PLT_PCREL34_NOTOC
1296 || r_type
== elfcpp::R_POWERPC_PLTSEQ
1297 || r_type
== elfcpp::R_POWERPC_PLTCALL
1298 || r_type
== elfcpp::R_PPC64_PLTSEQ_NOTOC
1299 || r_type
== elfcpp::R_PPC64_PLTCALL_NOTOC
)
1301 && (gsym
== target
->tls_get_addr()
1302 || gsym
== target
->tls_get_addr_opt()));
1303 Tls_get_addr last_tls
= this->tls_get_addr_state_
;
1304 this->tls_get_addr_state_
= NOT_EXPECTED
;
1305 if (is_tls_call
&& last_tls
!= EXPECTED
)
1307 else if (!is_tls_call
&& last_tls
!= NOT_EXPECTED
)
1316 // What we're up to regarding calls to __tls_get_addr.
1317 // On powerpc, the branch and link insn making a call to
1318 // __tls_get_addr is marked with a relocation, R_PPC64_TLSGD,
1319 // R_PPC64_TLSLD, R_PPC_TLSGD or R_PPC_TLSLD, in addition to the
1320 // usual R_POWERPC_REL24 or R_PPC_PLTREL24 relocation on a call.
1321 // The marker relocation always comes first, and has the same
1322 // symbol as the reloc on the insn setting up the __tls_get_addr
1323 // argument. This ties the arg setup insn with the call insn,
1324 // allowing ld to safely optimize away the call. We check that
1325 // every call to __tls_get_addr has a marker relocation, and that
1326 // every marker relocation is on a call to __tls_get_addr.
1327 Tls_get_addr tls_get_addr_state_
;
1328 // Info about the last reloc for error message.
1329 const Relocate_info
<size
, big_endian
>* relinfo_
;
1334 // The class which scans relocations.
1335 class Scan
: protected Track_tls
1338 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
1341 : Track_tls(), issued_non_pic_error_(false)
1345 get_reference_flags(unsigned int r_type
, const Target_powerpc
* target
);
1348 local(Symbol_table
* symtab
, Layout
* layout
, Target_powerpc
* target
,
1349 Sized_relobj_file
<size
, big_endian
>* object
,
1350 unsigned int data_shndx
,
1351 Output_section
* output_section
,
1352 const elfcpp::Rela
<size
, big_endian
>& reloc
, unsigned int r_type
,
1353 const elfcpp::Sym
<size
, big_endian
>& lsym
,
1357 global(Symbol_table
* symtab
, Layout
* layout
, Target_powerpc
* target
,
1358 Sized_relobj_file
<size
, big_endian
>* object
,
1359 unsigned int data_shndx
,
1360 Output_section
* output_section
,
1361 const elfcpp::Rela
<size
, big_endian
>& reloc
, unsigned int r_type
,
1365 local_reloc_may_be_function_pointer(Symbol_table
* , Layout
* ,
1367 Sized_relobj_file
<size
, big_endian
>* relobj
,
1370 const elfcpp::Rela
<size
, big_endian
>& ,
1371 unsigned int r_type
,
1372 const elfcpp::Sym
<size
, big_endian
>&)
1374 // PowerPC64 .opd is not folded, so any identical function text
1375 // may be folded and we'll still keep function addresses distinct.
1376 // That means no reloc is of concern here.
1379 Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
1380 <Powerpc_relobj
<size
, big_endian
>*>(relobj
);
1381 if (ppcobj
->abiversion() == 1)
1384 // For 32-bit and ELFv2, conservatively assume anything but calls to
1385 // function code might be taking the address of the function.
1386 return !is_branch_reloc
<size
>(r_type
);
1390 global_reloc_may_be_function_pointer(Symbol_table
* , Layout
* ,
1392 Sized_relobj_file
<size
, big_endian
>* relobj
,
1395 const elfcpp::Rela
<size
, big_endian
>& ,
1396 unsigned int r_type
,
1402 Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
1403 <Powerpc_relobj
<size
, big_endian
>*>(relobj
);
1404 if (ppcobj
->abiversion() == 1)
1407 return !is_branch_reloc
<size
>(r_type
);
1411 reloc_needs_plt_for_ifunc(Target_powerpc
<size
, big_endian
>* target
,
1412 Sized_relobj_file
<size
, big_endian
>* object
,
1413 unsigned int r_type
, bool report_err
);
1417 unsupported_reloc_local(Sized_relobj_file
<size
, big_endian
>*,
1418 unsigned int r_type
);
1421 unsupported_reloc_global(Sized_relobj_file
<size
, big_endian
>*,
1422 unsigned int r_type
, Symbol
*);
1425 generate_tls_call(Symbol_table
* symtab
, Layout
* layout
,
1426 Target_powerpc
* target
);
1429 check_non_pic(Relobj
*, unsigned int r_type
);
1431 // Whether we have issued an error about a non-PIC compilation.
1432 bool issued_non_pic_error_
;
1436 symval_for_branch(const Symbol_table
* symtab
,
1437 const Sized_symbol
<size
>* gsym
,
1438 Powerpc_relobj
<size
, big_endian
>* object
,
1439 Address
*value
, unsigned int *dest_shndx
);
1441 // The class which implements relocation.
1442 class Relocate
: protected Track_tls
1445 // Use 'at' branch hints when true, 'y' when false.
1446 // FIXME maybe: set this with an option.
1447 static const bool is_isa_v2
= true;
1453 // Do a relocation. Return false if the caller should not issue
1454 // any warnings about this relocation.
1456 relocate(const Relocate_info
<size
, big_endian
>*, unsigned int,
1457 Target_powerpc
*, Output_section
*, size_t, const unsigned char*,
1458 const Sized_symbol
<size
>*, const Symbol_value
<size
>*,
1459 unsigned char*, typename
elfcpp::Elf_types
<size
>::Elf_Addr
,
1463 class Relocate_comdat_behavior
1466 // Decide what the linker should do for relocations that refer to
1467 // discarded comdat sections.
1468 inline Comdat_behavior
1469 get(const char* name
)
1471 gold::Default_comdat_behavior default_behavior
;
1472 Comdat_behavior ret
= default_behavior
.get(name
);
1473 if (ret
== CB_ERROR
)
1476 && (strcmp(name
, ".fixup") == 0
1477 || strcmp(name
, ".got2") == 0))
1480 && (strcmp(name
, ".opd") == 0
1481 || strcmp(name
, ".toc") == 0
1482 || strcmp(name
, ".toc1") == 0))
1489 // Optimize the TLS relocation type based on what we know about the
1490 // symbol. IS_FINAL is true if the final address of this symbol is
1491 // known at link time.
1493 tls::Tls_optimization
1494 optimize_tls_gd(bool is_final
)
1496 // If we are generating a shared library, then we can't do anything
1498 if (parameters
->options().shared()
1499 || !parameters
->options().tls_optimize())
1500 return tls::TLSOPT_NONE
;
1503 return tls::TLSOPT_TO_IE
;
1504 return tls::TLSOPT_TO_LE
;
1507 tls::Tls_optimization
1510 if (parameters
->options().shared()
1511 || !parameters
->options().tls_optimize())
1512 return tls::TLSOPT_NONE
;
1514 return tls::TLSOPT_TO_LE
;
1517 tls::Tls_optimization
1518 optimize_tls_ie(bool is_final
)
1521 || parameters
->options().shared()
1522 || !parameters
->options().tls_optimize())
1523 return tls::TLSOPT_NONE
;
1525 return tls::TLSOPT_TO_LE
;
1530 make_glink_section(Layout
*);
1532 // Create the PLT section.
1534 make_plt_section(Symbol_table
*, Layout
*);
1537 make_iplt_section(Symbol_table
*, Layout
*);
1540 make_lplt_section(Layout
*);
1543 make_brlt_section(Layout
*);
1545 // Create a PLT entry for a global symbol.
1547 make_plt_entry(Symbol_table
*, Layout
*, Symbol
*);
1549 // Create a PLT entry for a local IFUNC symbol.
1551 make_local_ifunc_plt_entry(Symbol_table
*, Layout
*,
1552 Sized_relobj_file
<size
, big_endian
>*,
1555 // Create a PLT entry for a local non-IFUNC symbol.
1557 make_local_plt_entry(Layout
*,
1558 Sized_relobj_file
<size
, big_endian
>*,
1562 // Create a GOT entry for local dynamic __tls_get_addr.
1564 tlsld_got_offset(Symbol_table
* symtab
, Layout
* layout
,
1565 Sized_relobj_file
<size
, big_endian
>* object
);
1568 tlsld_got_offset() const
1570 return this->tlsld_got_offset_
;
1573 // Get the dynamic reloc section, creating it if necessary.
1575 rela_dyn_section(Layout
*);
1577 // Similarly, but for ifunc symbols get the one for ifunc.
1579 rela_dyn_section(Symbol_table
*, Layout
*, bool for_ifunc
);
1581 // Copy a relocation against a global symbol.
1583 copy_reloc(Symbol_table
* symtab
, Layout
* layout
,
1584 Sized_relobj_file
<size
, big_endian
>* object
,
1585 unsigned int shndx
, Output_section
* output_section
,
1586 Symbol
* sym
, const elfcpp::Rela
<size
, big_endian
>& reloc
)
1588 unsigned int r_type
= elfcpp::elf_r_type
<size
>(reloc
.get_r_info());
1589 this->copy_relocs_
.copy_reloc(symtab
, layout
,
1590 symtab
->get_sized_symbol
<size
>(sym
),
1591 object
, shndx
, output_section
,
1592 r_type
, reloc
.get_r_offset(),
1593 reloc
.get_r_addend(),
1594 this->rela_dyn_section(layout
));
1597 // Look over all the input sections, deciding where to place stubs.
1599 group_sections(Layout
*, const Task
*, bool);
1601 // Sort output sections by address.
1602 struct Sort_sections
1605 operator()(const Output_section
* sec1
, const Output_section
* sec2
)
1606 { return sec1
->address() < sec2
->address(); }
1612 Branch_info(Powerpc_relobj
<size
, big_endian
>* ppc_object
,
1613 unsigned int data_shndx
,
1615 unsigned int r_type
,
1618 : object_(ppc_object
), shndx_(data_shndx
), offset_(r_offset
),
1619 r_type_(r_type
), tocsave_ (0), r_sym_(r_sym
), addend_(addend
)
1625 // Return whether this branch is going via a plt call stub, and if
1626 // so, mark it as having an R_PPC64_TOCSAVE.
1628 mark_pltcall(Powerpc_relobj
<size
, big_endian
>* ppc_object
,
1629 unsigned int shndx
, Address offset
,
1630 Target_powerpc
* target
, Symbol_table
* symtab
);
1632 // If this branch needs a plt call stub, or a long branch stub, make one.
1634 make_stub(Stub_table
<size
, big_endian
>*,
1635 Stub_table
<size
, big_endian
>*,
1636 Symbol_table
*) const;
1639 // The branch location..
1640 Powerpc_relobj
<size
, big_endian
>* object_
;
1641 unsigned int shndx_
;
1643 // ..and the branch type and destination.
1644 unsigned int r_type_
: 31;
1645 unsigned int tocsave_
: 1;
1646 unsigned int r_sym_
;
1650 // Information about this specific target which we pass to the
1651 // general Target structure.
1652 static Target::Target_info powerpc_info
;
1654 // The types of GOT entries needed for this platform.
1655 // These values are exposed to the ABI in an incremental link.
1656 // Do not renumber existing values without changing the version
1657 // number of the .gnu_incremental_inputs section.
1661 GOT_TYPE_TLSGD
, // double entry for @got@tlsgd
1662 GOT_TYPE_DTPREL
, // entry for @got@dtprel
1663 GOT_TYPE_TPREL
// entry for @got@tprel
1667 Output_data_got_powerpc
<size
, big_endian
>* got_
;
1668 // The PLT section. This is a container for a table of addresses,
1669 // and their relocations. Each address in the PLT has a dynamic
1670 // relocation (R_*_JMP_SLOT) and each address will have a
1671 // corresponding entry in .glink for lazy resolution of the PLT.
1672 // ppc32 initialises the PLT to point at the .glink entry, while
1673 // ppc64 leaves this to ld.so. To make a call via the PLT, the
1674 // linker adds a stub that loads the PLT entry into ctr then
1675 // branches to ctr. There may be more than one stub for each PLT
1676 // entry. DT_JMPREL points at the first PLT dynamic relocation and
1677 // DT_PLTRELSZ gives the total size of PLT dynamic relocations.
1678 Output_data_plt_powerpc
<size
, big_endian
>* plt_
;
1679 // The IPLT section. Like plt_, this is a container for a table of
1680 // addresses and their relocations, specifically for STT_GNU_IFUNC
1681 // functions that resolve locally (STT_GNU_IFUNC functions that
1682 // don't resolve locally go in PLT). Unlike plt_, these have no
1683 // entry in .glink for lazy resolution, and the relocation section
1684 // does not have a 1-1 correspondence with IPLT addresses. In fact,
1685 // the relocation section may contain relocations against
1686 // STT_GNU_IFUNC symbols at locations outside of IPLT. The
1687 // relocation section will appear at the end of other dynamic
1688 // relocations, so that ld.so applies these relocations after other
1689 // dynamic relocations. In a static executable, the relocation
1690 // section is emitted and marked with __rela_iplt_start and
1691 // __rela_iplt_end symbols.
1692 Output_data_plt_powerpc
<size
, big_endian
>* iplt_
;
1693 // A PLT style section for local, non-ifunc symbols
1694 Output_data_plt_powerpc
<size
, big_endian
>* lplt_
;
1695 // Section holding long branch destinations.
1696 Output_data_brlt_powerpc
<size
, big_endian
>* brlt_section_
;
1697 // The .glink section.
1698 Output_data_glink
<size
, big_endian
>* glink_
;
1699 // The dynamic reloc section.
1700 Reloc_section
* rela_dyn_
;
1701 // Relocs saved to avoid a COPY reloc.
1702 Powerpc_copy_relocs
<elfcpp::SHT_RELA
, size
, big_endian
> copy_relocs_
;
1703 // Offset of the GOT entry for local dynamic __tls_get_addr calls.
1704 unsigned int tlsld_got_offset_
;
1706 Stub_tables stub_tables_
;
1707 typedef Unordered_map
<Address
, unsigned int> Branch_lookup_table
;
1708 Branch_lookup_table branch_lookup_table_
;
1710 typedef std::vector
<Branch_info
> Branches
;
1711 Branches branch_info_
;
1712 Tocsave_loc tocsave_loc_
;
1714 bool power10_relocs_
;
1715 bool plt_thread_safe_
;
1716 bool plt_localentry0_
;
1717 bool plt_localentry0_init_
;
1718 bool has_localentry0_
;
1719 bool has_tls_get_addr_opt_
;
1723 int relax_fail_count_
;
1724 int32_t stub_group_size_
;
1726 Output_data_save_res
<size
, big_endian
> *savres_section_
;
1728 // The "__tls_get_addr" symbol, if present
1729 Symbol
* tls_get_addr_
;
1730 // If optimizing __tls_get_addr calls, the "__tls_get_addr_opt" symbol.
1731 Symbol
* tls_get_addr_opt_
;
1733 // Attributes in output.
1734 Attributes_section_data
* attributes_section_data_
;
1736 // Last input file to change various attribute tags
1737 const char* last_fp_
;
1738 const char* last_ld_
;
1739 const char* last_vec_
;
1740 const char* last_struct_
;
1744 Target::Target_info Target_powerpc
<32, true>::powerpc_info
=
1747 true, // is_big_endian
1748 elfcpp::EM_PPC
, // machine_code
1749 false, // has_make_symbol
1750 false, // has_resolve
1751 false, // has_code_fill
1752 true, // is_default_stack_executable
1753 false, // can_icf_inline_merge_sections
1755 "/usr/lib/ld.so.1", // dynamic_linker
1756 0x10000000, // default_text_segment_address
1757 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1758 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1759 false, // isolate_execinstr
1761 elfcpp::SHN_UNDEF
, // small_common_shndx
1762 elfcpp::SHN_UNDEF
, // large_common_shndx
1763 0, // small_common_section_flags
1764 0, // large_common_section_flags
1765 NULL
, // attributes_section
1766 NULL
, // attributes_vendor
1767 "_start", // entry_symbol_name
1768 32, // hash_entry_size
1769 elfcpp::SHT_PROGBITS
, // unwind_section_type
1773 Target::Target_info Target_powerpc
<32, false>::powerpc_info
=
1776 false, // is_big_endian
1777 elfcpp::EM_PPC
, // machine_code
1778 false, // has_make_symbol
1779 false, // has_resolve
1780 false, // has_code_fill
1781 true, // is_default_stack_executable
1782 false, // can_icf_inline_merge_sections
1784 "/usr/lib/ld.so.1", // dynamic_linker
1785 0x10000000, // default_text_segment_address
1786 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1787 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1788 false, // isolate_execinstr
1790 elfcpp::SHN_UNDEF
, // small_common_shndx
1791 elfcpp::SHN_UNDEF
, // large_common_shndx
1792 0, // small_common_section_flags
1793 0, // large_common_section_flags
1794 NULL
, // attributes_section
1795 NULL
, // attributes_vendor
1796 "_start", // entry_symbol_name
1797 32, // hash_entry_size
1798 elfcpp::SHT_PROGBITS
, // unwind_section_type
1802 Target::Target_info Target_powerpc
<64, true>::powerpc_info
=
1805 true, // is_big_endian
1806 elfcpp::EM_PPC64
, // machine_code
1807 false, // has_make_symbol
1808 true, // has_resolve
1809 false, // has_code_fill
1810 false, // is_default_stack_executable
1811 false, // can_icf_inline_merge_sections
1813 "/usr/lib/ld.so.1", // dynamic_linker
1814 0x10000000, // default_text_segment_address
1815 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1816 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1817 false, // isolate_execinstr
1819 elfcpp::SHN_UNDEF
, // small_common_shndx
1820 elfcpp::SHN_UNDEF
, // large_common_shndx
1821 0, // small_common_section_flags
1822 0, // large_common_section_flags
1823 NULL
, // attributes_section
1824 NULL
, // attributes_vendor
1825 "_start", // entry_symbol_name
1826 32, // hash_entry_size
1827 elfcpp::SHT_PROGBITS
, // unwind_section_type
1831 Target::Target_info Target_powerpc
<64, false>::powerpc_info
=
1834 false, // is_big_endian
1835 elfcpp::EM_PPC64
, // machine_code
1836 false, // has_make_symbol
1837 true, // has_resolve
1838 false, // has_code_fill
1839 false, // is_default_stack_executable
1840 false, // can_icf_inline_merge_sections
1842 "/usr/lib/ld.so.1", // dynamic_linker
1843 0x10000000, // default_text_segment_address
1844 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1845 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1846 false, // isolate_execinstr
1848 elfcpp::SHN_UNDEF
, // small_common_shndx
1849 elfcpp::SHN_UNDEF
, // large_common_shndx
1850 0, // small_common_section_flags
1851 0, // large_common_section_flags
1852 NULL
, // attributes_section
1853 NULL
, // attributes_vendor
1854 "_start", // entry_symbol_name
1855 32, // hash_entry_size
1856 elfcpp::SHT_PROGBITS
, // unwind_section_type
1861 is_branch_reloc(unsigned int r_type
)
1863 return (r_type
== elfcpp::R_POWERPC_REL24
1864 || (size
== 64 && r_type
== elfcpp::R_PPC64_REL24_NOTOC
)
1865 || r_type
== elfcpp::R_PPC_PLTREL24
1866 || r_type
== elfcpp::R_PPC_LOCAL24PC
1867 || r_type
== elfcpp::R_POWERPC_REL14
1868 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
1869 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
1870 || r_type
== elfcpp::R_POWERPC_ADDR24
1871 || r_type
== elfcpp::R_POWERPC_ADDR14
1872 || r_type
== elfcpp::R_POWERPC_ADDR14_BRTAKEN
1873 || r_type
== elfcpp::R_POWERPC_ADDR14_BRNTAKEN
);
1876 // Reloc resolves to plt entry.
1879 is_plt16_reloc(unsigned int r_type
)
1881 return (r_type
== elfcpp::R_POWERPC_PLT16_LO
1882 || r_type
== elfcpp::R_POWERPC_PLT16_HI
1883 || r_type
== elfcpp::R_POWERPC_PLT16_HA
1884 || (size
== 64 && r_type
== elfcpp::R_PPC64_PLT16_LO_DS
));
1887 // GOT_TYPE_STANDARD (ie. not TLS) GOT relocs
1889 is_got_reloc(unsigned int r_type
)
1891 return (r_type
== elfcpp::R_POWERPC_GOT16
1892 || r_type
== elfcpp::R_POWERPC_GOT16_LO
1893 || r_type
== elfcpp::R_POWERPC_GOT16_HI
1894 || r_type
== elfcpp::R_POWERPC_GOT16_HA
1895 || r_type
== elfcpp::R_PPC64_GOT16_DS
1896 || r_type
== elfcpp::R_PPC64_GOT16_LO_DS
1897 || r_type
== elfcpp::R_PPC64_GOT_PCREL34
);
1900 // If INSN is an opcode that may be used with an @tls operand, return
1901 // the transformed insn for TLS optimisation, otherwise return 0. If
1902 // REG is non-zero only match an insn with RB or RA equal to REG.
1904 at_tls_transform(uint32_t insn
, unsigned int reg
)
1906 if ((insn
& (0x3f << 26)) != 31 << 26)
1910 if (reg
== 0 || ((insn
>> 11) & 0x1f) == reg
)
1911 rtra
= insn
& ((1 << 26) - (1 << 16));
1912 else if (((insn
>> 16) & 0x1f) == reg
)
1913 rtra
= (insn
& (0x1f << 21)) | ((insn
& (0x1f << 11)) << 5);
1917 if ((insn
& (0x3ff << 1)) == 266 << 1)
1920 else if ((insn
& (0x1f << 1)) == 23 << 1
1921 && ((insn
& (0x1f << 6)) < 14 << 6
1922 || ((insn
& (0x1f << 6)) >= 16 << 6
1923 && (insn
& (0x1f << 6)) < 24 << 6)))
1924 // load and store indexed -> dform
1925 insn
= (32 | ((insn
>> 6) & 0x1f)) << 26;
1926 else if ((insn
& (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
1927 // ldx, ldux, stdx, stdux -> ld, ldu, std, stdu
1928 insn
= ((58 | ((insn
>> 6) & 4)) << 26) | ((insn
>> 6) & 1);
1929 else if ((insn
& (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
1931 insn
= (58 << 26) | 2;
1939 template<int size
, bool big_endian
>
1940 class Powerpc_relocate_functions
1960 typedef Powerpc_relocate_functions
<size
, big_endian
> This
;
1961 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
1962 typedef typename
elfcpp::Elf_types
<size
>::Elf_Swxword SignedAddress
;
1964 template<int valsize
>
1966 has_overflow_signed(Address value
)
1968 // limit = 1 << (valsize - 1) without shift count exceeding size of type
1969 Address limit
= static_cast<Address
>(1) << ((valsize
- 1) >> 1);
1970 limit
<<= ((valsize
- 1) >> 1);
1971 limit
<<= ((valsize
- 1) - 2 * ((valsize
- 1) >> 1));
1972 return value
+ limit
> (limit
<< 1) - 1;
1975 template<int valsize
>
1977 has_overflow_unsigned(Address value
)
1979 Address limit
= static_cast<Address
>(1) << ((valsize
- 1) >> 1);
1980 limit
<<= ((valsize
- 1) >> 1);
1981 limit
<<= ((valsize
- 1) - 2 * ((valsize
- 1) >> 1));
1982 return value
> (limit
<< 1) - 1;
1985 template<int valsize
>
1987 has_overflow_bitfield(Address value
)
1989 return (has_overflow_unsigned
<valsize
>(value
)
1990 && has_overflow_signed
<valsize
>(value
));
1993 template<int valsize
>
1994 static inline Status
1995 overflowed(Address value
, Overflow_check overflow
)
1997 if (overflow
== CHECK_SIGNED
)
1999 if (has_overflow_signed
<valsize
>(value
))
2000 return STATUS_OVERFLOW
;
2002 else if (overflow
== CHECK_UNSIGNED
)
2004 if (has_overflow_unsigned
<valsize
>(value
))
2005 return STATUS_OVERFLOW
;
2007 else if (overflow
== CHECK_BITFIELD
)
2009 if (has_overflow_bitfield
<valsize
>(value
))
2010 return STATUS_OVERFLOW
;
2015 // Do a simple RELA relocation
2016 template<int fieldsize
, int valsize
>
2017 static inline Status
2018 rela(unsigned char* view
, Address value
, Overflow_check overflow
)
2020 typedef typename
elfcpp::Swap
<fieldsize
, big_endian
>::Valtype Valtype
;
2021 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
2022 elfcpp::Swap
<fieldsize
, big_endian
>::writeval(wv
, value
);
2023 return overflowed
<valsize
>(value
, overflow
);
2026 template<int fieldsize
, int valsize
>
2027 static inline Status
2028 rela(unsigned char* view
,
2029 unsigned int right_shift
,
2030 typename
elfcpp::Valtype_base
<fieldsize
>::Valtype dst_mask
,
2032 Overflow_check overflow
)
2034 typedef typename
elfcpp::Swap
<fieldsize
, big_endian
>::Valtype Valtype
;
2035 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
2036 Valtype val
= elfcpp::Swap
<fieldsize
, big_endian
>::readval(wv
);
2037 if (overflow
== CHECK_SIGNED
)
2038 value
= static_cast<SignedAddress
>(value
) >> right_shift
;
2040 value
= value
>> right_shift
;
2041 Valtype reloc
= value
;
2044 elfcpp::Swap
<fieldsize
, big_endian
>::writeval(wv
, val
| reloc
);
2045 return overflowed
<valsize
>(value
, overflow
);
2048 // Do a simple RELA relocation, unaligned.
2049 template<int fieldsize
, int valsize
>
2050 static inline Status
2051 rela_ua(unsigned char* view
, Address value
, Overflow_check overflow
)
2053 elfcpp::Swap_unaligned
<fieldsize
, big_endian
>::writeval(view
, value
);
2054 return overflowed
<valsize
>(value
, overflow
);
2057 template<int fieldsize
, int valsize
>
2058 static inline Status
2059 rela_ua(unsigned char* view
,
2060 unsigned int right_shift
,
2061 typename
elfcpp::Valtype_base
<fieldsize
>::Valtype dst_mask
,
2063 Overflow_check overflow
)
2065 typedef typename
elfcpp::Swap_unaligned
<fieldsize
, big_endian
>::Valtype
2067 Valtype val
= elfcpp::Swap
<fieldsize
, big_endian
>::readval(view
);
2068 if (overflow
== CHECK_SIGNED
)
2069 value
= static_cast<SignedAddress
>(value
) >> right_shift
;
2071 value
= value
>> right_shift
;
2072 Valtype reloc
= value
;
2075 elfcpp::Swap_unaligned
<fieldsize
, big_endian
>::writeval(view
, val
| reloc
);
2076 return overflowed
<valsize
>(value
, overflow
);
2080 // R_PPC64_ADDR64: (Symbol + Addend)
2082 addr64(unsigned char* view
, Address value
)
2083 { This::template rela
<64,64>(view
, value
, CHECK_NONE
); }
2085 // R_PPC64_UADDR64: (Symbol + Addend) unaligned
2087 addr64_u(unsigned char* view
, Address value
)
2088 { This::template rela_ua
<64,64>(view
, value
, CHECK_NONE
); }
2090 // R_POWERPC_ADDR32: (Symbol + Addend)
2091 static inline Status
2092 addr32(unsigned char* view
, Address value
, Overflow_check overflow
)
2093 { return This::template rela
<32,32>(view
, value
, overflow
); }
2095 // R_POWERPC_UADDR32: (Symbol + Addend) unaligned
2096 static inline Status
2097 addr32_u(unsigned char* view
, Address value
, Overflow_check overflow
)
2098 { return This::template rela_ua
<32,32>(view
, value
, overflow
); }
2100 // R_POWERPC_ADDR24: (Symbol + Addend) & 0x3fffffc
2101 static inline Status
2102 addr24(unsigned char* view
, Address value
, Overflow_check overflow
)
2104 Status stat
= This::template rela
<32,26>(view
, 0, 0x03fffffc,
2106 if (overflow
!= CHECK_NONE
&& (value
& 3) != 0)
2107 stat
= STATUS_OVERFLOW
;
2111 // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff
2112 static inline Status
2113 addr16(unsigned char* view
, Address value
, Overflow_check overflow
)
2114 { return This::template rela
<16,16>(view
, value
, overflow
); }
2116 // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff, unaligned
2117 static inline Status
2118 addr16_u(unsigned char* view
, Address value
, Overflow_check overflow
)
2119 { return This::template rela_ua
<16,16>(view
, value
, overflow
); }
2121 // R_POWERPC_ADDR16_DS: (Symbol + Addend) & 0xfffc
2122 static inline Status
2123 addr16_ds(unsigned char* view
, Address value
, Overflow_check overflow
)
2125 Status stat
= This::template rela
<16,16>(view
, 0, 0xfffc, value
, overflow
);
2126 if ((value
& 3) != 0)
2127 stat
= STATUS_OVERFLOW
;
2131 // R_POWERPC_ADDR16_DQ: (Symbol + Addend) & 0xfff0
2132 static inline Status
2133 addr16_dq(unsigned char* view
, Address value
, Overflow_check overflow
)
2135 Status stat
= This::template rela
<16,16>(view
, 0, 0xfff0, value
, overflow
);
2136 if ((value
& 15) != 0)
2137 stat
= STATUS_OVERFLOW
;
2141 // R_POWERPC_ADDR16_HI: ((Symbol + Addend) >> 16) & 0xffff
2143 addr16_hi(unsigned char* view
, Address value
)
2144 { This::template rela
<16,16>(view
, 16, 0xffff, value
, CHECK_NONE
); }
2146 // R_POWERPC_ADDR16_HA: ((Symbol + Addend + 0x8000) >> 16) & 0xffff
2148 addr16_ha(unsigned char* view
, Address value
)
2149 { This::addr16_hi(view
, value
+ 0x8000); }
2151 // R_POWERPC_ADDR16_HIGHER: ((Symbol + Addend) >> 32) & 0xffff
2153 addr16_hi2(unsigned char* view
, Address value
)
2154 { This::template rela
<16,16>(view
, 32, 0xffff, value
, CHECK_NONE
); }
2156 // R_POWERPC_ADDR16_HIGHERA: ((Symbol + Addend + 0x8000) >> 32) & 0xffff
2158 addr16_ha2(unsigned char* view
, Address value
)
2159 { This::addr16_hi2(view
, value
+ 0x8000); }
2161 // R_POWERPC_ADDR16_HIGHEST: ((Symbol + Addend) >> 48) & 0xffff
2163 addr16_hi3(unsigned char* view
, Address value
)
2164 { This::template rela
<16,16>(view
, 48, 0xffff, value
, CHECK_NONE
); }
2166 // R_POWERPC_ADDR16_HIGHESTA: ((Symbol + Addend + 0x8000) >> 48) & 0xffff
2168 addr16_ha3(unsigned char* view
, Address value
)
2169 { This::addr16_hi3(view
, value
+ 0x8000); }
2171 // R_POWERPC_ADDR14: (Symbol + Addend) & 0xfffc
2172 static inline Status
2173 addr14(unsigned char* view
, Address value
, Overflow_check overflow
)
2175 Status stat
= This::template rela
<32,16>(view
, 0, 0xfffc, value
, overflow
);
2176 if (overflow
!= CHECK_NONE
&& (value
& 3) != 0)
2177 stat
= STATUS_OVERFLOW
;
2181 // R_POWERPC_REL16DX_HA
2182 static inline Status
2183 addr16dx_ha(unsigned char *view
, Address value
, Overflow_check overflow
)
2185 typedef typename
elfcpp::Swap
<32, big_endian
>::Valtype Valtype
;
2186 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
2187 Valtype val
= elfcpp::Swap
<32, big_endian
>::readval(wv
);
2189 value
= static_cast<SignedAddress
>(value
) >> 16;
2190 val
|= (value
& 0xffc1) | ((value
& 0x3e) << 15);
2191 elfcpp::Swap
<32, big_endian
>::writeval(wv
, val
);
2192 return overflowed
<16>(value
, overflow
);
2196 static inline Status
2197 addr34(unsigned char *view
, uint64_t value
, Overflow_check overflow
)
2199 Status stat
= This::template rela
<32,18>(view
, 16, 0x3ffff,
2201 This::rela
<32,16>(view
+ 4, 0, 0xffff, value
, CHECK_NONE
);
2207 addr34_hi(unsigned char *view
, uint64_t value
)
2208 { This::addr34(view
, value
>> 34, CHECK_NONE
);}
2212 addr34_ha(unsigned char *view
, uint64_t value
)
2213 { This::addr34_hi(view
, value
+ (1ULL << 33));}
2216 static inline Status
2217 addr28(unsigned char *view
, uint64_t value
, Overflow_check overflow
)
2219 Status stat
= This::template rela
<32,12>(view
, 16, 0xfff,
2221 This::rela
<32,16>(view
+ 4, 0, 0xffff, value
, CHECK_NONE
);
2225 // R_PPC64_ADDR16_HIGHER34
2227 addr16_higher34(unsigned char* view
, uint64_t value
)
2228 { This::addr16(view
, value
>> 34, CHECK_NONE
); }
2230 // R_PPC64_ADDR16_HIGHERA34
2232 addr16_highera34(unsigned char* view
, uint64_t value
)
2233 { This::addr16_higher34(view
, value
+ (1ULL << 33)); }
2235 // R_PPC64_ADDR16_HIGHEST34
2237 addr16_highest34(unsigned char* view
, uint64_t value
)
2238 { This::addr16(view
, value
>> 50, CHECK_NONE
); }
2240 // R_PPC64_ADDR16_HIGHESTA34
2242 addr16_highesta34(unsigned char* view
, uint64_t value
)
2243 { This::addr16_highest34(view
, value
+ (1ULL << 33)); }
2246 // Set ABI version for input and output.
2248 template<int size
, bool big_endian
>
2250 Powerpc_relobj
<size
, big_endian
>::set_abiversion(int ver
)
2252 this->e_flags_
|= ver
;
2253 if (this->abiversion() != 0)
2255 Target_powerpc
<size
, big_endian
>* target
=
2256 static_cast<Target_powerpc
<size
, big_endian
>*>(
2257 parameters
->sized_target
<size
, big_endian
>());
2258 if (target
->abiversion() == 0)
2259 target
->set_abiversion(this->abiversion());
2260 else if (target
->abiversion() != this->abiversion())
2261 gold_error(_("%s: ABI version %d is not compatible "
2262 "with ABI version %d output"),
2263 this->name().c_str(),
2264 this->abiversion(), target
->abiversion());
2269 // Stash away the index of .got2, .opd, .rela.toc, and .toc in a
2270 // relocatable object, if such sections exists.
2272 template<int size
, bool big_endian
>
2274 Powerpc_relobj
<size
, big_endian
>::do_find_special_sections(
2275 Read_symbols_data
* sd
)
2277 const unsigned char* const pshdrs
= sd
->section_headers
->data();
2278 const unsigned char* namesu
= sd
->section_names
->data();
2279 const char* names
= reinterpret_cast<const char*>(namesu
);
2280 section_size_type names_size
= sd
->section_names_size
;
2281 const unsigned char* s
;
2283 s
= this->template find_shdr
<size
, big_endian
>(pshdrs
,
2284 size
== 32 ? ".got2" : ".opd",
2285 names
, names_size
, NULL
);
2288 unsigned int ndx
= (s
- pshdrs
) / elfcpp::Elf_sizes
<size
>::shdr_size
;
2289 this->special_
= ndx
;
2292 if (this->abiversion() == 0)
2293 this->set_abiversion(1);
2294 else if (this->abiversion() > 1)
2295 gold_error(_("%s: .opd invalid in abiv%d"),
2296 this->name().c_str(), this->abiversion());
2301 s
= this->template find_shdr
<size
, big_endian
>(pshdrs
, ".rela.toc",
2302 names
, names_size
, NULL
);
2305 unsigned int ndx
= (s
- pshdrs
) / elfcpp::Elf_sizes
<size
>::shdr_size
;
2306 this->relatoc_
= ndx
;
2307 typename
elfcpp::Shdr
<size
, big_endian
> shdr(s
);
2308 this->toc_
= this->adjust_shndx(shdr
.get_sh_info());
2311 return Sized_relobj_file
<size
, big_endian
>::do_find_special_sections(sd
);
2314 // Examine .rela.opd to build info about function entry points.
2316 template<int size
, bool big_endian
>
2318 Powerpc_relobj
<size
, big_endian
>::scan_opd_relocs(
2320 const unsigned char* prelocs
,
2321 const unsigned char* plocal_syms
)
2325 typedef typename
elfcpp::Rela
<size
, big_endian
> Reltype
;
2326 const int reloc_size
= elfcpp::Elf_sizes
<size
>::rela_size
;
2327 const int sym_size
= elfcpp::Elf_sizes
<size
>::sym_size
;
2328 Address expected_off
= 0;
2329 bool regular
= true;
2330 unsigned int opd_ent_size
= 0;
2332 for (size_t i
= 0; i
< reloc_count
; ++i
, prelocs
+= reloc_size
)
2334 Reltype
reloc(prelocs
);
2335 typename
elfcpp::Elf_types
<size
>::Elf_WXword r_info
2336 = reloc
.get_r_info();
2337 unsigned int r_type
= elfcpp::elf_r_type
<size
>(r_info
);
2338 if (r_type
== elfcpp::R_PPC64_ADDR64
)
2340 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(r_info
);
2341 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
;
2344 if (r_sym
< this->local_symbol_count())
2346 typename
elfcpp::Sym
<size
, big_endian
>
2347 lsym(plocal_syms
+ r_sym
* sym_size
);
2348 shndx
= lsym
.get_st_shndx();
2349 shndx
= this->adjust_sym_shndx(r_sym
, shndx
, &is_ordinary
);
2350 value
= lsym
.get_st_value();
2353 shndx
= this->symbol_section_and_value(r_sym
, &value
,
2355 this->set_opd_ent(reloc
.get_r_offset(), shndx
,
2356 value
+ reloc
.get_r_addend());
2359 expected_off
= reloc
.get_r_offset();
2360 opd_ent_size
= expected_off
;
2362 else if (expected_off
!= reloc
.get_r_offset())
2364 expected_off
+= opd_ent_size
;
2366 else if (r_type
== elfcpp::R_PPC64_TOC
)
2368 if (expected_off
- opd_ent_size
+ 8 != reloc
.get_r_offset())
2373 gold_warning(_("%s: unexpected reloc type %u in .opd section"),
2374 this->name().c_str(), r_type
);
2378 if (reloc_count
<= 2)
2379 opd_ent_size
= this->section_size(this->opd_shndx());
2380 if (opd_ent_size
!= 24 && opd_ent_size
!= 16)
2384 gold_warning(_("%s: .opd is not a regular array of opd entries"),
2385 this->name().c_str());
2391 // Returns true if a code sequence loading the TOC entry at VALUE
2392 // relative to the TOC pointer can be converted into code calculating
2393 // a TOC pointer relative offset.
2394 // If so, the TOC pointer relative offset is stored to VALUE.
2396 template<int size
, bool big_endian
>
2398 Powerpc_relobj
<size
, big_endian
>::make_toc_relative(
2399 Target_powerpc
<size
, big_endian
>* target
,
2405 // With -mcmodel=medium code it is quite possible to have
2406 // toc-relative relocs referring to objects outside the TOC.
2407 // Don't try to look at a non-existent TOC.
2408 if (this->toc_shndx() == 0)
2411 // Convert VALUE back to an address by adding got_base (see below),
2412 // then to an offset in the TOC by subtracting the TOC output
2413 // section address and the TOC output offset. Since this TOC output
2414 // section and the got output section are one and the same, we can
2415 // omit adding and subtracting the output section address.
2416 Address off
= (*value
+ this->toc_base_offset()
2417 - this->output_section_offset(this->toc_shndx()));
2418 // Is this offset in the TOC? -mcmodel=medium code may be using
2419 // TOC relative access to variables outside the TOC. Those of
2420 // course can't be optimized. We also don't try to optimize code
2421 // that is using a different object's TOC.
2422 if (off
>= this->section_size(this->toc_shndx()))
2425 if (this->no_toc_opt(off
))
2428 section_size_type vlen
;
2429 unsigned char* view
= this->get_output_view(this->toc_shndx(), &vlen
);
2430 Address addr
= elfcpp::Swap
<size
, big_endian
>::readval(view
+ off
);
2432 Address got_base
= (target
->got_section()->output_section()->address()
2433 + this->toc_base_offset());
2435 if (addr
+ (uint64_t) 0x80008000 >= (uint64_t) 1 << 32)
2442 template<int size
, bool big_endian
>
2444 Powerpc_relobj
<size
, big_endian
>::make_got_relative(
2445 Target_powerpc
<size
, big_endian
>* target
,
2446 const Symbol_value
<size
>* psymval
,
2450 Address addr
= psymval
->value(this, addend
);
2451 Address got_base
= (target
->got_section()->output_section()->address()
2452 + this->toc_base_offset());
2454 if (addr
+ 0x80008000 > 0xffffffff)
2461 // Perform the Sized_relobj_file method, then set up opd info from
2464 template<int size
, bool big_endian
>
2466 Powerpc_relobj
<size
, big_endian
>::do_read_relocs(Read_relocs_data
* rd
)
2468 Sized_relobj_file
<size
, big_endian
>::do_read_relocs(rd
);
2471 for (Read_relocs_data::Relocs_list::iterator p
= rd
->relocs
.begin();
2472 p
!= rd
->relocs
.end();
2475 if (p
->data_shndx
== this->opd_shndx())
2477 uint64_t opd_size
= this->section_size(this->opd_shndx());
2478 gold_assert(opd_size
== static_cast<size_t>(opd_size
));
2481 this->init_opd(opd_size
);
2482 this->scan_opd_relocs(p
->reloc_count
, p
->contents
->data(),
2483 rd
->local_symbols
->data());
2491 // Read the symbols then set up st_other vector.
2493 template<int size
, bool big_endian
>
2495 Powerpc_relobj
<size
, big_endian
>::do_read_symbols(Read_symbols_data
* sd
)
2497 this->base_read_symbols(sd
);
2498 if (this->input_file()->format() != Input_file::FORMAT_ELF
)
2502 const int shdr_size
= elfcpp::Elf_sizes
<size
>::shdr_size
;
2503 const unsigned char* const pshdrs
= sd
->section_headers
->data();
2504 const unsigned int loccount
= this->do_local_symbol_count();
2507 this->st_other_
.resize(loccount
);
2508 const int sym_size
= elfcpp::Elf_sizes
<size
>::sym_size
;
2509 off_t locsize
= loccount
* sym_size
;
2510 const unsigned int symtab_shndx
= this->symtab_shndx();
2511 const unsigned char *psymtab
= pshdrs
+ symtab_shndx
* shdr_size
;
2512 typename
elfcpp::Shdr
<size
, big_endian
> shdr(psymtab
);
2513 const unsigned char* psyms
= this->get_view(shdr
.get_sh_offset(),
2514 locsize
, true, false);
2516 for (unsigned int i
= 1; i
< loccount
; ++i
, psyms
+= sym_size
)
2518 elfcpp::Sym
<size
, big_endian
> sym(psyms
);
2519 unsigned char st_other
= sym
.get_st_other();
2520 this->st_other_
[i
] = st_other
;
2521 if ((st_other
& elfcpp::STO_PPC64_LOCAL_MASK
) != 0)
2523 if (this->abiversion() == 0)
2524 this->set_abiversion(2);
2525 else if (this->abiversion() < 2)
2526 gold_error(_("%s: local symbol %d has invalid st_other"
2527 " for ABI version 1"),
2528 this->name().c_str(), i
);
2534 const size_t shdr_size
= elfcpp::Elf_sizes
<size
>::shdr_size
;
2535 const unsigned char* ps
= sd
->section_headers
->data() + shdr_size
;
2536 bool merge_attributes
= false;
2537 for (unsigned int i
= 1; i
< this->shnum(); ++i
, ps
+= shdr_size
)
2539 elfcpp::Shdr
<size
, big_endian
> shdr(ps
);
2540 switch (shdr
.get_sh_type())
2542 case elfcpp::SHT_GNU_ATTRIBUTES
:
2544 gold_assert(this->attributes_section_data_
== NULL
);
2545 section_offset_type section_offset
= shdr
.get_sh_offset();
2546 section_size_type section_size
=
2547 convert_to_section_size_type(shdr
.get_sh_size());
2548 const unsigned char* view
=
2549 this->get_view(section_offset
, section_size
, true, false);
2550 this->attributes_section_data_
=
2551 new Attributes_section_data(view
, section_size
);
2555 case elfcpp::SHT_SYMTAB
:
2557 // Sometimes an object has no contents except the section
2558 // name string table and an empty symbol table with the
2559 // undefined symbol. We don't want to merge
2560 // processor-specific flags from such an object.
2561 const typename
elfcpp::Elf_types
<size
>::Elf_WXword sym_size
=
2562 elfcpp::Elf_sizes
<size
>::sym_size
;
2563 if (shdr
.get_sh_size() > sym_size
)
2564 merge_attributes
= true;
2568 case elfcpp::SHT_STRTAB
:
2572 merge_attributes
= true;
2577 if (!merge_attributes
)
2579 // Should rarely happen.
2580 delete this->attributes_section_data_
;
2581 this->attributes_section_data_
= NULL
;
2585 template<int size
, bool big_endian
>
2587 Powerpc_dynobj
<size
, big_endian
>::set_abiversion(int ver
)
2589 this->e_flags_
|= ver
;
2590 if (this->abiversion() != 0)
2592 Target_powerpc
<size
, big_endian
>* target
=
2593 static_cast<Target_powerpc
<size
, big_endian
>*>(
2594 parameters
->sized_target
<size
, big_endian
>());
2595 if (target
->abiversion() == 0)
2596 target
->set_abiversion(this->abiversion());
2597 else if (target
->abiversion() != this->abiversion())
2598 gold_error(_("%s: ABI version %d is not compatible "
2599 "with ABI version %d output"),
2600 this->name().c_str(),
2601 this->abiversion(), target
->abiversion());
2606 // Call Sized_dynobj::base_read_symbols to read the symbols then
2607 // read .opd from a dynamic object, filling in opd_ent_ vector,
2609 template<int size
, bool big_endian
>
2611 Powerpc_dynobj
<size
, big_endian
>::do_read_symbols(Read_symbols_data
* sd
)
2613 this->base_read_symbols(sd
);
2614 const size_t shdr_size
= elfcpp::Elf_sizes
<size
>::shdr_size
;
2615 const unsigned char* ps
=
2616 sd
->section_headers
->data() + shdr_size
* (this->shnum() - 1);
2617 for (unsigned int i
= this->shnum(); i
> 0; --i
, ps
-= shdr_size
)
2619 elfcpp::Shdr
<size
, big_endian
> shdr(ps
);
2620 if (shdr
.get_sh_type() == elfcpp::SHT_GNU_ATTRIBUTES
)
2622 section_offset_type section_offset
= shdr
.get_sh_offset();
2623 section_size_type section_size
=
2624 convert_to_section_size_type(shdr
.get_sh_size());
2625 const unsigned char* view
=
2626 this->get_view(section_offset
, section_size
, true, false);
2627 this->attributes_section_data_
=
2628 new Attributes_section_data(view
, section_size
);
2634 const unsigned char* const pshdrs
= sd
->section_headers
->data();
2635 const unsigned char* namesu
= sd
->section_names
->data();
2636 const char* names
= reinterpret_cast<const char*>(namesu
);
2637 const unsigned char* s
= NULL
;
2638 const unsigned char* opd
;
2639 section_size_type opd_size
;
2641 // Find and read .opd section.
2644 s
= this->template find_shdr
<size
, big_endian
>(pshdrs
, ".opd", names
,
2645 sd
->section_names_size
,
2650 typename
elfcpp::Shdr
<size
, big_endian
> shdr(s
);
2651 if (shdr
.get_sh_type() == elfcpp::SHT_PROGBITS
2652 && (shdr
.get_sh_flags() & elfcpp::SHF_ALLOC
) != 0)
2654 if (this->abiversion() == 0)
2655 this->set_abiversion(1);
2656 else if (this->abiversion() > 1)
2657 gold_error(_("%s: .opd invalid in abiv%d"),
2658 this->name().c_str(), this->abiversion());
2660 this->opd_shndx_
= (s
- pshdrs
) / shdr_size
;
2661 this->opd_address_
= shdr
.get_sh_addr();
2662 opd_size
= convert_to_section_size_type(shdr
.get_sh_size());
2663 opd
= this->get_view(shdr
.get_sh_offset(), opd_size
,
2669 // Build set of executable sections.
2670 // Using a set is probably overkill. There is likely to be only
2671 // a few executable sections, typically .init, .text and .fini,
2672 // and they are generally grouped together.
2673 typedef std::set
<Sec_info
> Exec_sections
;
2674 Exec_sections exec_sections
;
2676 for (unsigned int i
= 1; i
< this->shnum(); ++i
, s
+= shdr_size
)
2678 typename
elfcpp::Shdr
<size
, big_endian
> shdr(s
);
2679 if (shdr
.get_sh_type() == elfcpp::SHT_PROGBITS
2680 && ((shdr
.get_sh_flags()
2681 & (elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
))
2682 == (elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
))
2683 && shdr
.get_sh_size() != 0)
2685 exec_sections
.insert(Sec_info(shdr
.get_sh_addr(),
2686 shdr
.get_sh_size(), i
));
2689 if (exec_sections
.empty())
2692 // Look over the OPD entries. This is complicated by the fact
2693 // that some binaries will use two-word entries while others
2694 // will use the standard three-word entries. In most cases
2695 // the third word (the environment pointer for languages like
2696 // Pascal) is unused and will be zero. If the third word is
2697 // used it should not be pointing into executable sections,
2699 this->init_opd(opd_size
);
2700 for (const unsigned char* p
= opd
; p
< opd
+ opd_size
; p
+= 8)
2702 typedef typename
elfcpp::Swap
<64, big_endian
>::Valtype Valtype
;
2703 const Valtype
* valp
= reinterpret_cast<const Valtype
*>(p
);
2704 Valtype val
= elfcpp::Swap
<64, big_endian
>::readval(valp
);
2706 // Chances are that this is the third word of an OPD entry.
2708 typename
Exec_sections::const_iterator e
2709 = exec_sections
.upper_bound(Sec_info(val
, 0, 0));
2710 if (e
!= exec_sections
.begin())
2713 if (e
->start
<= val
&& val
< e
->start
+ e
->len
)
2715 // We have an address in an executable section.
2716 // VAL ought to be the function entry, set it up.
2717 this->set_opd_ent(p
- opd
, e
->shndx
, val
);
2718 // Skip second word of OPD entry, the TOC pointer.
2722 // If we didn't match any executable sections, we likely
2723 // have a non-zero third word in the OPD entry.
2728 // Relocate sections.
2730 template<int size
, bool big_endian
>
2732 Powerpc_relobj
<size
, big_endian
>::do_relocate_sections(
2733 const Symbol_table
* symtab
, const Layout
* layout
,
2734 const unsigned char* pshdrs
, Output_file
* of
,
2735 typename Sized_relobj_file
<size
, big_endian
>::Views
* pviews
)
2737 unsigned int start
= 1;
2739 && this->relatoc_
!= 0
2740 && !parameters
->options().relocatable())
2742 // Relocate .toc first.
2743 this->relocate_section_range(symtab
, layout
, pshdrs
, of
, pviews
,
2744 this->relatoc_
, this->relatoc_
);
2745 this->relocate_section_range(symtab
, layout
, pshdrs
, of
, pviews
,
2746 1, this->relatoc_
- 1);
2747 start
= this->relatoc_
+ 1;
2749 this->relocate_section_range(symtab
, layout
, pshdrs
, of
, pviews
,
2750 start
, this->shnum() - 1);
2752 if (!parameters
->options().output_is_position_independent())
2754 Target_powerpc
<size
, big_endian
>* target
2755 = static_cast<Target_powerpc
<size
, big_endian
>*>(
2756 parameters
->sized_target
<size
, big_endian
>());
2757 if (target
->lplt_section() && target
->lplt_section()->data_size() != 0)
2759 const section_size_type offset
= target
->lplt_section()->offset();
2760 const section_size_type oview_size
2761 = convert_to_section_size_type(target
->lplt_section()->data_size());
2762 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
2764 bool modified
= false;
2765 unsigned int nsyms
= this->local_symbol_count();
2766 for (unsigned int i
= 0; i
< nsyms
; i
++)
2767 if (this->local_has_plt_offset(i
))
2769 Address value
= this->local_symbol_value(i
, 0);
2770 size_t off
= this->local_plt_offset(i
);
2771 elfcpp::Swap
<size
, big_endian
>::writeval(oview
+ off
, value
);
2775 of
->write_output_view(offset
, oview_size
, oview
);
2780 // Set up some symbols.
2782 template<int size
, bool big_endian
>
2784 Target_powerpc
<size
, big_endian
>::do_define_standard_symbols(
2785 Symbol_table
* symtab
,
2790 // Define _GLOBAL_OFFSET_TABLE_ to ensure it isn't seen as
2791 // undefined when scanning relocs (and thus requires
2792 // non-relative dynamic relocs). The proper value will be
2794 Symbol
*gotsym
= symtab
->lookup("_GLOBAL_OFFSET_TABLE_", NULL
);
2795 if (gotsym
!= NULL
&& gotsym
->is_undefined())
2797 Target_powerpc
<size
, big_endian
>* target
=
2798 static_cast<Target_powerpc
<size
, big_endian
>*>(
2799 parameters
->sized_target
<size
, big_endian
>());
2800 Output_data_got_powerpc
<size
, big_endian
>* got
2801 = target
->got_section(symtab
, layout
);
2802 symtab
->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL
,
2803 Symbol_table::PREDEFINED
,
2807 elfcpp::STV_HIDDEN
, 0,
2811 // Define _SDA_BASE_ at the start of the .sdata section + 32768.
2812 Symbol
*sdasym
= symtab
->lookup("_SDA_BASE_", NULL
);
2813 if (sdasym
!= NULL
&& sdasym
->is_undefined())
2815 Output_data_space
* sdata
= new Output_data_space(4, "** sdata");
2817 = layout
->add_output_section_data(".sdata", 0,
2819 | elfcpp::SHF_WRITE
,
2820 sdata
, ORDER_SMALL_DATA
, false);
2821 symtab
->define_in_output_data("_SDA_BASE_", NULL
,
2822 Symbol_table::PREDEFINED
,
2823 os
, 32768, 0, elfcpp::STT_OBJECT
,
2824 elfcpp::STB_LOCAL
, elfcpp::STV_HIDDEN
,
2830 // Define .TOC. as for 32-bit _GLOBAL_OFFSET_TABLE_
2831 Symbol
*gotsym
= symtab
->lookup(".TOC.", NULL
);
2832 if (gotsym
!= NULL
&& gotsym
->is_undefined())
2834 Target_powerpc
<size
, big_endian
>* target
=
2835 static_cast<Target_powerpc
<size
, big_endian
>*>(
2836 parameters
->sized_target
<size
, big_endian
>());
2837 Output_data_got_powerpc
<size
, big_endian
>* got
2838 = target
->got_section(symtab
, layout
);
2839 symtab
->define_in_output_data(".TOC.", NULL
,
2840 Symbol_table::PREDEFINED
,
2844 elfcpp::STV_HIDDEN
, 0,
2849 this->tls_get_addr_
= symtab
->lookup("__tls_get_addr");
2850 if (parameters
->options().tls_get_addr_optimize()
2851 && this->tls_get_addr_
!= NULL
2852 && this->tls_get_addr_
->in_reg())
2853 this->tls_get_addr_opt_
= symtab
->lookup("__tls_get_addr_opt");
2854 if (this->tls_get_addr_opt_
!= NULL
)
2856 if (this->tls_get_addr_
->is_undefined()
2857 || this->tls_get_addr_
->is_from_dynobj())
2859 // Make it seem as if references to __tls_get_addr are
2860 // really to __tls_get_addr_opt, so the latter symbol is
2861 // made dynamic, not the former.
2862 this->tls_get_addr_
->clear_in_reg();
2863 this->tls_get_addr_opt_
->set_in_reg();
2865 // We have a non-dynamic definition for __tls_get_addr.
2866 // Make __tls_get_addr_opt the same, if it does not already have
2867 // a non-dynamic definition.
2868 else if (this->tls_get_addr_opt_
->is_undefined()
2869 || this->tls_get_addr_opt_
->is_from_dynobj())
2871 Sized_symbol
<size
>* from
2872 = static_cast<Sized_symbol
<size
>*>(this->tls_get_addr_
);
2873 Sized_symbol
<size
>* to
2874 = static_cast<Sized_symbol
<size
>*>(this->tls_get_addr_opt_
);
2875 symtab
->clone
<size
>(to
, from
);
2880 // Set up PowerPC target specific relobj.
2882 template<int size
, bool big_endian
>
2884 Target_powerpc
<size
, big_endian
>::do_make_elf_object(
2885 const std::string
& name
,
2886 Input_file
* input_file
,
2887 off_t offset
, const elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
2889 int et
= ehdr
.get_e_type();
2890 // ET_EXEC files are valid input for --just-symbols/-R,
2891 // and we treat them as relocatable objects.
2892 if (et
== elfcpp::ET_REL
2893 || (et
== elfcpp::ET_EXEC
&& input_file
->just_symbols()))
2895 Powerpc_relobj
<size
, big_endian
>* obj
=
2896 new Powerpc_relobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
);
2900 else if (et
== elfcpp::ET_DYN
)
2902 Powerpc_dynobj
<size
, big_endian
>* obj
=
2903 new Powerpc_dynobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
);
2909 gold_error(_("%s: unsupported ELF file type %d"), name
.c_str(), et
);
2914 template<int size
, bool big_endian
>
2915 class Output_data_got_powerpc
: public Output_data_got
<size
, big_endian
>
2918 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Valtype
;
2919 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true, size
, big_endian
> Rela_dyn
;
2921 Output_data_got_powerpc(Symbol_table
* symtab
, Layout
* layout
)
2922 : Output_data_got
<size
, big_endian
>(),
2923 symtab_(symtab
), layout_(layout
),
2924 header_ent_cnt_(size
== 32 ? 3 : 1),
2925 header_index_(size
== 32 ? 0x2000 : 0)
2928 this->set_addralign(256);
2931 // Override all the Output_data_got methods we use so as to first call
2934 add_global(Symbol
* gsym
, unsigned int got_type
)
2936 this->reserve_ent();
2937 return Output_data_got
<size
, big_endian
>::add_global(gsym
, got_type
);
2941 add_global_plt(Symbol
* gsym
, unsigned int got_type
)
2943 this->reserve_ent();
2944 return Output_data_got
<size
, big_endian
>::add_global_plt(gsym
, got_type
);
2948 add_global_tls(Symbol
* gsym
, unsigned int got_type
)
2949 { return this->add_global_plt(gsym
, got_type
); }
2952 add_global_with_rel(Symbol
* gsym
, unsigned int got_type
,
2953 Output_data_reloc_generic
* rel_dyn
, unsigned int r_type
)
2955 this->reserve_ent();
2956 Output_data_got
<size
, big_endian
>::
2957 add_global_with_rel(gsym
, got_type
, rel_dyn
, r_type
);
2961 add_global_pair_with_rel(Symbol
* gsym
, unsigned int got_type
,
2962 Output_data_reloc_generic
* rel_dyn
,
2963 unsigned int r_type_1
, unsigned int r_type_2
)
2965 if (gsym
->has_got_offset(got_type
))
2968 this->reserve_ent(2);
2969 Output_data_got
<size
, big_endian
>::
2970 add_global_pair_with_rel(gsym
, got_type
, rel_dyn
, r_type_1
, r_type_2
);
2974 add_local(Relobj
* object
, unsigned int sym_index
, unsigned int got_type
)
2976 this->reserve_ent();
2977 return Output_data_got
<size
, big_endian
>::add_local(object
, sym_index
,
2982 add_local_plt(Relobj
* object
, unsigned int sym_index
, unsigned int got_type
)
2984 this->reserve_ent();
2985 return Output_data_got
<size
, big_endian
>::add_local_plt(object
, sym_index
,
2990 add_local_tls(Relobj
* object
, unsigned int sym_index
, unsigned int got_type
)
2991 { return this->add_local_plt(object
, sym_index
, got_type
); }
2994 add_local_tls_pair(Relobj
* object
, unsigned int sym_index
,
2995 unsigned int got_type
,
2996 Output_data_reloc_generic
* rel_dyn
,
2997 unsigned int r_type
)
2999 if (object
->local_has_got_offset(sym_index
, got_type
))
3002 this->reserve_ent(2);
3003 Output_data_got
<size
, big_endian
>::
3004 add_local_tls_pair(object
, sym_index
, got_type
, rel_dyn
, r_type
);
3008 add_constant(Valtype constant
)
3010 this->reserve_ent();
3011 return Output_data_got
<size
, big_endian
>::add_constant(constant
);
3015 add_constant_pair(Valtype c1
, Valtype c2
)
3017 this->reserve_ent(2);
3018 return Output_data_got
<size
, big_endian
>::add_constant_pair(c1
, c2
);
3021 // Offset of _GLOBAL_OFFSET_TABLE_.
3025 return this->got_offset(this->header_index_
);
3028 // Offset of base used to access the GOT/TOC.
3029 // The got/toc pointer reg will be set to this value.
3031 got_base_offset(const Powerpc_relobj
<size
, big_endian
>* object
) const
3034 return this->g_o_t();
3036 return (this->output_section()->address()
3037 + object
->toc_base_offset()
3041 // Ensure our GOT has a header.
3043 set_final_data_size()
3045 if (this->header_ent_cnt_
!= 0)
3046 this->make_header();
3047 Output_data_got
<size
, big_endian
>::set_final_data_size();
3050 // First word of GOT header needs some values that are not
3051 // handled by Output_data_got so poke them in here.
3052 // For 32-bit, address of .dynamic, for 64-bit, address of TOCbase.
3054 do_write(Output_file
* of
)
3057 if (size
== 32 && this->layout_
->dynamic_data() != NULL
)
3058 val
= this->layout_
->dynamic_section()->address();
3060 val
= this->output_section()->address() + 0x8000;
3061 this->replace_constant(this->header_index_
, val
);
3062 Output_data_got
<size
, big_endian
>::do_write(of
);
3067 reserve_ent(unsigned int cnt
= 1)
3069 if (this->header_ent_cnt_
== 0)
3071 if (this->num_entries() + cnt
> this->header_index_
)
3072 this->make_header();
3078 this->header_ent_cnt_
= 0;
3079 this->header_index_
= this->num_entries();
3082 Output_data_got
<size
, big_endian
>::add_constant(0);
3083 Output_data_got
<size
, big_endian
>::add_constant(0);
3084 Output_data_got
<size
, big_endian
>::add_constant(0);
3086 // Define _GLOBAL_OFFSET_TABLE_ at the header
3087 Symbol
*gotsym
= this->symtab_
->lookup("_GLOBAL_OFFSET_TABLE_", NULL
);
3090 Sized_symbol
<size
>* sym
= static_cast<Sized_symbol
<size
>*>(gotsym
);
3091 sym
->set_value(this->g_o_t());
3094 this->symtab_
->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL
,
3095 Symbol_table::PREDEFINED
,
3096 this, this->g_o_t(), 0,
3099 elfcpp::STV_HIDDEN
, 0,
3103 Output_data_got
<size
, big_endian
>::add_constant(0);
3106 // Stashed pointers.
3107 Symbol_table
* symtab_
;
3111 unsigned int header_ent_cnt_
;
3112 // GOT header index.
3113 unsigned int header_index_
;
3116 // Get the GOT section, creating it if necessary.
3118 template<int size
, bool big_endian
>
3119 Output_data_got_powerpc
<size
, big_endian
>*
3120 Target_powerpc
<size
, big_endian
>::got_section(Symbol_table
* symtab
,
3123 if (this->got_
== NULL
)
3125 gold_assert(symtab
!= NULL
&& layout
!= NULL
);
3128 = new Output_data_got_powerpc
<size
, big_endian
>(symtab
, layout
);
3130 layout
->add_output_section_data(".got", elfcpp::SHT_PROGBITS
,
3131 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
3132 this->got_
, ORDER_DATA
, false);
3138 // Get the dynamic reloc section, creating it if necessary.
3140 template<int size
, bool big_endian
>
3141 typename Target_powerpc
<size
, big_endian
>::Reloc_section
*
3142 Target_powerpc
<size
, big_endian
>::rela_dyn_section(Layout
* layout
)
3144 if (this->rela_dyn_
== NULL
)
3146 gold_assert(layout
!= NULL
);
3147 this->rela_dyn_
= new Reloc_section(parameters
->options().combreloc());
3148 layout
->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA
,
3149 elfcpp::SHF_ALLOC
, this->rela_dyn_
,
3150 ORDER_DYNAMIC_RELOCS
, false);
3152 return this->rela_dyn_
;
3155 // Similarly, but for ifunc symbols get the one for ifunc.
3157 template<int size
, bool big_endian
>
3158 typename Target_powerpc
<size
, big_endian
>::Reloc_section
*
3159 Target_powerpc
<size
, big_endian
>::rela_dyn_section(Symbol_table
* symtab
,
3164 return this->rela_dyn_section(layout
);
3166 if (this->iplt_
== NULL
)
3167 this->make_iplt_section(symtab
, layout
);
3168 return this->iplt_
->rel_plt();
3174 // Determine the stub group size. The group size is the absolute
3175 // value of the parameter --stub-group-size. If --stub-group-size
3176 // is passed a negative value, we restrict stubs to be always after
3177 // the stubbed branches.
3178 Stub_control(int32_t size
, bool no_size_errors
, bool multi_os
)
3179 : stub_group_size_(abs(size
)), stubs_always_after_branch_(size
< 0),
3180 suppress_size_errors_(no_size_errors
), multi_os_(multi_os
),
3181 state_(NO_GROUP
), group_size_(0), group_start_addr_(0),
3182 owner_(NULL
), output_section_(NULL
)
3186 // Return true iff input section can be handled by current stub
3189 can_add_to_stub_group(Output_section
* o
,
3190 const Output_section::Input_section
* i
,
3193 const Output_section::Input_section
*
3199 { return output_section_
; }
3202 set_output_and_owner(Output_section
* o
,
3203 const Output_section::Input_section
* i
)
3205 this->output_section_
= o
;
3214 // Adding group sections before the stubs.
3215 FINDING_STUB_SECTION
,
3216 // Adding group sections after the stubs.
3220 uint32_t stub_group_size_
;
3221 bool stubs_always_after_branch_
;
3222 bool suppress_size_errors_
;
3223 // True if a stub group can serve multiple output sections.
3226 // Current max size of group. Starts at stub_group_size_ but is
3227 // reduced to stub_group_size_/1024 on seeing a section with
3228 // external conditional branches.
3229 uint32_t group_size_
;
3230 uint64_t group_start_addr_
;
3231 // owner_ and output_section_ specify the section to which stubs are
3232 // attached. The stubs are placed at the end of this section.
3233 const Output_section::Input_section
* owner_
;
3234 Output_section
* output_section_
;
3237 // Return true iff input section can be handled by current stub
3238 // group. Sections are presented to this function in order,
3239 // so the first section is the head of the group.
3242 Stub_control::can_add_to_stub_group(Output_section
* o
,
3243 const Output_section::Input_section
* i
,
3246 bool whole_sec
= o
->order() == ORDER_INIT
|| o
->order() == ORDER_FINI
;
3248 uint64_t start_addr
= o
->address();
3251 // .init and .fini sections are pasted together to form a single
3252 // function. We can't be adding stubs in the middle of the function.
3253 this_size
= o
->data_size();
3256 start_addr
+= i
->relobj()->output_section_offset(i
->shndx());
3257 this_size
= i
->data_size();
3260 uint64_t end_addr
= start_addr
+ this_size
;
3261 uint32_t group_size
= this->stub_group_size_
;
3263 this->group_size_
= group_size
= group_size
>> 10;
3265 if (this_size
> group_size
&& !this->suppress_size_errors_
)
3266 gold_warning(_("%s:%s exceeds group size"),
3267 i
->relobj()->name().c_str(),
3268 i
->relobj()->section_name(i
->shndx()).c_str());
3270 gold_debug(DEBUG_TARGET
, "maybe add%s %s:%s size=%#llx total=%#llx",
3271 has14
? " 14bit" : "",
3272 i
->relobj()->name().c_str(),
3273 i
->relobj()->section_name(i
->shndx()).c_str(),
3274 (long long) this_size
,
3275 (this->state_
== NO_GROUP
3277 : (long long) end_addr
- this->group_start_addr_
));
3279 if (this->state_
== NO_GROUP
)
3281 // Only here on very first use of Stub_control
3283 this->output_section_
= o
;
3284 this->state_
= FINDING_STUB_SECTION
;
3285 this->group_size_
= group_size
;
3286 this->group_start_addr_
= start_addr
;
3289 else if (!this->multi_os_
&& this->output_section_
!= o
)
3291 else if (this->state_
== HAS_STUB_SECTION
)
3293 // Can we add this section, which is after the stubs, to the
3295 if (end_addr
- this->group_start_addr_
<= this->group_size_
)
3298 else if (this->state_
== FINDING_STUB_SECTION
)
3300 if ((whole_sec
&& this->output_section_
== o
)
3301 || end_addr
- this->group_start_addr_
<= this->group_size_
)
3303 // Stubs are added at the end of "owner_".
3305 this->output_section_
= o
;
3308 // The group before the stubs has reached maximum size.
3309 // Now see about adding sections after the stubs to the
3310 // group. If the current section has a 14-bit branch and
3311 // the group before the stubs exceeds group_size_ (because
3312 // they didn't have 14-bit branches), don't add sections
3313 // after the stubs: The size of stubs for such a large
3314 // group may exceed the reach of a 14-bit branch.
3315 if (!this->stubs_always_after_branch_
3316 && this_size
<= this->group_size_
3317 && start_addr
- this->group_start_addr_
<= this->group_size_
)
3319 gold_debug(DEBUG_TARGET
, "adding after stubs");
3320 this->state_
= HAS_STUB_SECTION
;
3321 this->group_start_addr_
= start_addr
;
3328 gold_debug(DEBUG_TARGET
,
3329 !this->multi_os_
&& this->output_section_
!= o
3330 ? "nope, new output section\n"
3331 : "nope, didn't fit\n");
3333 // The section fails to fit in the current group. Set up a few
3334 // things for the next group. owner_ and output_section_ will be
3335 // set later after we've retrieved those values for the current
3337 this->state_
= FINDING_STUB_SECTION
;
3338 this->group_size_
= group_size
;
3339 this->group_start_addr_
= start_addr
;
3343 // Look over all the input sections, deciding where to place stubs.
3345 template<int size
, bool big_endian
>
3347 Target_powerpc
<size
, big_endian
>::group_sections(Layout
* layout
,
3349 bool no_size_errors
)
3351 Stub_control
stub_control(this->stub_group_size_
, no_size_errors
,
3352 parameters
->options().stub_group_multi());
3354 // Group input sections and insert stub table
3355 Stub_table_owner
* table_owner
= NULL
;
3356 std::vector
<Stub_table_owner
*> tables
;
3357 Layout::Section_list section_list
;
3358 layout
->get_executable_sections(§ion_list
);
3359 std::stable_sort(section_list
.begin(), section_list
.end(), Sort_sections());
3360 for (Layout::Section_list::iterator o
= section_list
.begin();
3361 o
!= section_list
.end();
3364 typedef Output_section::Input_section_list Input_section_list
;
3365 for (Input_section_list::const_iterator i
3366 = (*o
)->input_sections().begin();
3367 i
!= (*o
)->input_sections().end();
3370 if (i
->is_input_section()
3371 || i
->is_relaxed_input_section())
3373 Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
3374 <Powerpc_relobj
<size
, big_endian
>*>(i
->relobj());
3375 bool has14
= ppcobj
->has_14bit_branch(i
->shndx());
3376 if (!stub_control
.can_add_to_stub_group(*o
, &*i
, has14
))
3378 table_owner
->output_section
= stub_control
.output_section();
3379 table_owner
->owner
= stub_control
.owner();
3380 stub_control
.set_output_and_owner(*o
, &*i
);
3383 if (table_owner
== NULL
)
3385 table_owner
= new Stub_table_owner
;
3386 tables
.push_back(table_owner
);
3388 ppcobj
->set_stub_table(i
->shndx(), tables
.size() - 1);
3392 if (table_owner
!= NULL
)
3394 table_owner
->output_section
= stub_control
.output_section();
3395 table_owner
->owner
= stub_control
.owner();;
3397 for (typename
std::vector
<Stub_table_owner
*>::iterator t
= tables
.begin();
3401 Stub_table
<size
, big_endian
>* stub_table
;
3403 if ((*t
)->owner
->is_input_section())
3404 stub_table
= new Stub_table
<size
, big_endian
>(this,
3405 (*t
)->output_section
,
3407 this->stub_tables_
.size());
3408 else if ((*t
)->owner
->is_relaxed_input_section())
3409 stub_table
= static_cast<Stub_table
<size
, big_endian
>*>(
3410 (*t
)->owner
->relaxed_input_section());
3413 this->stub_tables_
.push_back(stub_table
);
3419 static unsigned long
3420 max_branch_delta (unsigned int r_type
)
3422 if (r_type
== elfcpp::R_POWERPC_REL14
3423 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
3424 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
)
3426 if (r_type
== elfcpp::R_POWERPC_REL24
3427 || (size
== 64 && r_type
== elfcpp::R_PPC64_REL24_NOTOC
)
3428 || r_type
== elfcpp::R_PPC_PLTREL24
3429 || r_type
== elfcpp::R_PPC_LOCAL24PC
)
3434 // Return whether this branch is going via a plt call stub.
3436 template<int size
, bool big_endian
>
3438 Target_powerpc
<size
, big_endian
>::Branch_info::mark_pltcall(
3439 Powerpc_relobj
<size
, big_endian
>* ppc_object
,
3442 Target_powerpc
* target
,
3443 Symbol_table
* symtab
)
3445 if (this->object_
!= ppc_object
3446 || this->shndx_
!= shndx
3447 || this->offset_
!= offset
)
3450 Symbol
* sym
= this->object_
->global_symbol(this->r_sym_
);
3451 if (sym
!= NULL
&& sym
->is_forwarder())
3452 sym
= symtab
->resolve_forwards(sym
);
3453 if (target
->replace_tls_get_addr(sym
))
3454 sym
= target
->tls_get_addr_opt();
3455 const Sized_symbol
<size
>* gsym
= static_cast<const Sized_symbol
<size
>*>(sym
);
3457 ? (gsym
->use_plt_offset(Scan::get_reference_flags(this->r_type_
, target
))
3458 && !target
->is_elfv2_localentry0(gsym
))
3459 : (this->object_
->local_has_plt_offset(this->r_sym_
)
3460 && !target
->is_elfv2_localentry0(this->object_
, this->r_sym_
)))
3468 // If this branch needs a plt call stub, or a long branch stub, make one.
3470 template<int size
, bool big_endian
>
3472 Target_powerpc
<size
, big_endian
>::Branch_info::make_stub(
3473 Stub_table
<size
, big_endian
>* stub_table
,
3474 Stub_table
<size
, big_endian
>* ifunc_stub_table
,
3475 Symbol_table
* symtab
) const
3477 Symbol
* sym
= this->object_
->global_symbol(this->r_sym_
);
3478 Target_powerpc
<size
, big_endian
>* target
=
3479 static_cast<Target_powerpc
<size
, big_endian
>*>(
3480 parameters
->sized_target
<size
, big_endian
>());
3481 if (sym
!= NULL
&& sym
->is_forwarder())
3482 sym
= symtab
->resolve_forwards(sym
);
3483 if (target
->replace_tls_get_addr(sym
))
3484 sym
= target
->tls_get_addr_opt();
3485 const Sized_symbol
<size
>* gsym
= static_cast<const Sized_symbol
<size
>*>(sym
);
3489 ? gsym
->use_plt_offset(Scan::get_reference_flags(this->r_type_
, target
))
3490 : this->object_
->local_has_plt_offset(this->r_sym_
))
3494 && target
->abiversion() >= 2
3495 && !parameters
->options().output_is_position_independent()
3496 && !is_branch_reloc
<size
>(this->r_type_
))
3497 target
->glink_section()->add_global_entry(gsym
);
3500 if (stub_table
== NULL
3503 && !parameters
->options().output_is_position_independent()
3504 && !is_branch_reloc
<size
>(this->r_type_
)))
3505 stub_table
= this->object_
->stub_table(this->shndx_
);
3506 if (stub_table
== NULL
)
3508 // This is a ref from a data section to an ifunc symbol,
3509 // or a non-branch reloc for which we always want to use
3510 // one set of stubs for resolving function addresses.
3511 stub_table
= ifunc_stub_table
;
3513 gold_assert(stub_table
!= NULL
);
3514 Address from
= this->object_
->get_output_section_offset(this->shndx_
);
3515 if (from
!= invalid_address
)
3516 from
+= (this->object_
->output_section(this->shndx_
)->address()
3519 ok
= stub_table
->add_plt_call_entry(from
,
3520 this->object_
, gsym
,
3521 this->r_type_
, this->addend_
,
3524 ok
= stub_table
->add_plt_call_entry(from
,
3525 this->object_
, this->r_sym_
,
3526 this->r_type_
, this->addend_
,
3532 Address max_branch_offset
= max_branch_delta
<size
>(this->r_type_
);
3533 if (max_branch_offset
== 0)
3535 Address from
= this->object_
->get_output_section_offset(this->shndx_
);
3536 gold_assert(from
!= invalid_address
);
3537 from
+= (this->object_
->output_section(this->shndx_
)->address()
3543 switch (gsym
->source())
3545 case Symbol::FROM_OBJECT
:
3547 Object
* symobj
= gsym
->object();
3548 if (symobj
->is_dynamic()
3549 || symobj
->pluginobj() != NULL
)
3552 unsigned int shndx
= gsym
->shndx(&is_ordinary
);
3553 if (shndx
== elfcpp::SHN_UNDEF
)
3558 case Symbol::IS_UNDEFINED
:
3564 Symbol_table::Compute_final_value_status status
;
3565 to
= symtab
->compute_final_value
<size
>(gsym
, &status
);
3566 if (status
!= Symbol_table::CFVS_OK
)
3568 other
= gsym
->nonvis() >> 3;
3572 const Symbol_value
<size
>* psymval
3573 = this->object_
->local_symbol(this->r_sym_
);
3574 Symbol_value
<size
> symval
;
3575 if (psymval
->is_section_symbol())
3576 symval
.set_is_section_symbol();
3577 typedef Sized_relobj_file
<size
, big_endian
> ObjType
;
3578 typename
ObjType::Compute_final_local_value_status status
3579 = this->object_
->compute_final_local_value(this->r_sym_
, psymval
,
3581 if (status
!= ObjType::CFLV_OK
3582 || !symval
.has_output_value())
3584 to
= symval
.value(this->object_
, 0);
3585 other
= this->object_
->st_other(this->r_sym_
) >> 5;
3587 if (!(size
== 32 && this->r_type_
== elfcpp::R_PPC_PLTREL24
))
3588 to
+= this->addend_
;
3589 if (stub_table
== NULL
)
3590 stub_table
= this->object_
->stub_table(this->shndx_
);
3591 if (size
== 64 && target
->abiversion() < 2)
3593 unsigned int dest_shndx
;
3594 if (!target
->symval_for_branch(symtab
, gsym
, this->object_
,
3598 unsigned int local_ent
= 0;
3600 && this->r_type_
!= elfcpp::R_PPC64_REL24_NOTOC
)
3601 local_ent
= elfcpp::ppc64_decode_local_entry(other
);
3602 Address delta
= to
+ local_ent
- from
;
3603 if (delta
+ max_branch_offset
>= 2 * max_branch_offset
3605 && this->r_type_
== elfcpp::R_PPC64_REL24_NOTOC
3607 ? this->object_
->ppc64_needs_toc(gsym
)
3608 : this->object_
->ppc64_needs_toc(this->r_sym_
))))
3610 if (stub_table
== NULL
)
3612 gold_warning(_("%s:%s: branch in non-executable section,"
3613 " no long branch stub for you"),
3614 this->object_
->name().c_str(),
3615 this->object_
->section_name(this->shndx_
).c_str());
3618 bool save_res
= (size
== 64
3620 && gsym
->source() == Symbol::IN_OUTPUT_DATA
3621 && gsym
->output_data() == target
->savres_section());
3622 ok
= stub_table
->add_long_branch_entry(this->object_
,
3624 from
, to
, other
, save_res
);
3628 gold_debug(DEBUG_TARGET
,
3629 "branch at %s:%s+%#lx\n"
3630 "can't reach stub attached to %s:%s",
3631 this->object_
->name().c_str(),
3632 this->object_
->section_name(this->shndx_
).c_str(),
3633 (unsigned long) this->offset_
,
3634 stub_table
->relobj()->name().c_str(),
3635 stub_table
->relobj()->section_name(stub_table
->shndx()).c_str());
3640 // Relaxation hook. This is where we do stub generation.
3642 template<int size
, bool big_endian
>
3644 Target_powerpc
<size
, big_endian
>::do_relax(int pass
,
3645 const Input_objects
*,
3646 Symbol_table
* symtab
,
3650 unsigned int prev_brlt_size
= 0;
3654 = this->abiversion() < 2 && parameters
->options().plt_thread_safe();
3656 && this->abiversion() < 2
3658 && !parameters
->options().user_set_plt_thread_safe())
3660 static const char* const thread_starter
[] =
3664 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
3666 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
3667 "mq_notify", "create_timer",
3672 "GOMP_parallel_start",
3673 "GOMP_parallel_loop_static",
3674 "GOMP_parallel_loop_static_start",
3675 "GOMP_parallel_loop_dynamic",
3676 "GOMP_parallel_loop_dynamic_start",
3677 "GOMP_parallel_loop_guided",
3678 "GOMP_parallel_loop_guided_start",
3679 "GOMP_parallel_loop_runtime",
3680 "GOMP_parallel_loop_runtime_start",
3681 "GOMP_parallel_sections",
3682 "GOMP_parallel_sections_start",
3687 if (parameters
->options().shared())
3691 for (unsigned int i
= 0;
3692 i
< sizeof(thread_starter
) / sizeof(thread_starter
[0]);
3695 Symbol
* sym
= symtab
->lookup(thread_starter
[i
], NULL
);
3696 thread_safe
= (sym
!= NULL
3698 && sym
->in_real_elf());
3704 this->plt_thread_safe_
= thread_safe
;
3709 this->stub_group_size_
= parameters
->options().stub_group_size();
3710 bool no_size_errors
= true;
3711 if (this->stub_group_size_
== 1)
3712 this->stub_group_size_
= 0x1c00000;
3713 else if (this->stub_group_size_
== -1)
3714 this->stub_group_size_
= -0x1e00000;
3716 no_size_errors
= false;
3717 this->group_sections(layout
, task
, no_size_errors
);
3719 else if (this->relax_failed_
&& this->relax_fail_count_
< 3)
3721 this->branch_lookup_table_
.clear();
3722 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
3723 p
!= this->stub_tables_
.end();
3726 (*p
)->clear_stubs(true);
3728 this->stub_tables_
.clear();
3729 this->stub_group_size_
= this->stub_group_size_
/ 4 * 3;
3730 gold_info(_("%s: stub group size is too large; retrying with %#x"),
3731 program_name
, this->stub_group_size_
);
3732 this->group_sections(layout
, task
, true);
3735 // We need address of stub tables valid for make_stub.
3736 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
3737 p
!= this->stub_tables_
.end();
3740 const Powerpc_relobj
<size
, big_endian
>* object
3741 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>((*p
)->relobj());
3742 Address off
= object
->get_output_section_offset((*p
)->shndx());
3743 gold_assert(off
!= invalid_address
);
3744 Output_section
* os
= (*p
)->output_section();
3745 (*p
)->set_address_and_size(os
, off
);
3750 // Clear plt call stubs, long branch stubs and branch lookup table.
3751 prev_brlt_size
= this->branch_lookup_table_
.size();
3752 this->branch_lookup_table_
.clear();
3753 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
3754 p
!= this->stub_tables_
.end();
3757 (*p
)->clear_stubs(false);
3761 // Build all the stubs.
3762 this->relax_failed_
= false;
3763 Stub_table
<size
, big_endian
>* ifunc_stub_table
3764 = this->stub_tables_
.size() == 0 ? NULL
: this->stub_tables_
[0];
3765 Stub_table
<size
, big_endian
>* one_stub_table
3766 = this->stub_tables_
.size() != 1 ? NULL
: ifunc_stub_table
;
3767 for (typename
Branches::const_iterator b
= this->branch_info_
.begin();
3768 b
!= this->branch_info_
.end();
3771 if (!b
->make_stub(one_stub_table
, ifunc_stub_table
, symtab
)
3772 && !this->relax_failed_
)
3774 this->relax_failed_
= true;
3775 this->relax_fail_count_
++;
3776 if (this->relax_fail_count_
< 3)
3780 bool do_resize
= false;
3781 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
3782 p
!= this->stub_tables_
.end();
3784 if ((*p
)->need_resize())
3791 this->branch_lookup_table_
.clear();
3792 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
3793 p
!= this->stub_tables_
.end();
3795 (*p
)->set_resizing(true);
3796 for (typename
Branches::const_iterator b
= this->branch_info_
.begin();
3797 b
!= this->branch_info_
.end();
3800 if (!b
->make_stub(one_stub_table
, ifunc_stub_table
, symtab
)
3801 && !this->relax_failed_
)
3803 this->relax_failed_
= true;
3804 this->relax_fail_count_
++;
3805 if (this->relax_fail_count_
< 3)
3809 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
3810 p
!= this->stub_tables_
.end();
3812 (*p
)->set_resizing(false);
3815 // Did anything change size?
3816 unsigned int num_huge_branches
= this->branch_lookup_table_
.size();
3817 bool again
= num_huge_branches
!= prev_brlt_size
;
3818 if (size
== 64 && num_huge_branches
!= 0)
3819 this->make_brlt_section(layout
);
3820 if (size
== 64 && again
)
3821 this->brlt_section_
->set_current_size(num_huge_branches
);
3823 for (typename
Stub_tables::reverse_iterator p
= this->stub_tables_
.rbegin();
3824 p
!= this->stub_tables_
.rend();
3826 (*p
)->remove_eh_frame(layout
);
3828 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
3829 p
!= this->stub_tables_
.end();
3831 (*p
)->add_eh_frame(layout
);
3833 typedef Unordered_set
<Output_section
*> Output_sections
;
3834 Output_sections os_need_update
;
3835 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
3836 p
!= this->stub_tables_
.end();
3839 if ((*p
)->size_update())
3842 os_need_update
.insert((*p
)->output_section());
3846 // Set output section offsets for all input sections in an output
3847 // section that just changed size. Anything past the stubs will
3849 for (typename
Output_sections::iterator p
= os_need_update
.begin();
3850 p
!= os_need_update
.end();
3853 Output_section
* os
= *p
;
3855 typedef Output_section::Input_section_list Input_section_list
;
3856 for (Input_section_list::const_iterator i
= os
->input_sections().begin();
3857 i
!= os
->input_sections().end();
3860 off
= align_address(off
, i
->addralign());
3861 if (i
->is_input_section() || i
->is_relaxed_input_section())
3862 i
->relobj()->set_section_offset(i
->shndx(), off
);
3863 if (i
->is_relaxed_input_section())
3865 Stub_table
<size
, big_endian
>* stub_table
3866 = static_cast<Stub_table
<size
, big_endian
>*>(
3867 i
->relaxed_input_section());
3868 Address stub_table_size
= stub_table
->set_address_and_size(os
, off
);
3869 off
+= stub_table_size
;
3870 // After a few iterations, set current stub table size
3871 // as min size threshold, so later stub tables can only
3874 stub_table
->set_min_size_threshold(stub_table_size
);
3877 off
+= i
->data_size();
3879 // If .branch_lt is part of this output section, then we have
3880 // just done the offset adjustment.
3881 os
->clear_section_offsets_need_adjustment();
3886 && num_huge_branches
!= 0
3887 && parameters
->options().output_is_position_independent())
3889 // Fill in the BRLT relocs.
3890 this->brlt_section_
->reset_brlt_sizes();
3891 for (typename
Branch_lookup_table::const_iterator p
3892 = this->branch_lookup_table_
.begin();
3893 p
!= this->branch_lookup_table_
.end();
3896 this->brlt_section_
->add_reloc(p
->first
, p
->second
);
3898 this->brlt_section_
->finalize_brlt_sizes();
3902 && (parameters
->options().user_set_emit_stub_syms()
3903 ? parameters
->options().emit_stub_syms()
3905 || parameters
->options().output_is_position_independent()
3906 || parameters
->options().emit_relocs())))
3908 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
3909 p
!= this->stub_tables_
.end();
3911 (*p
)->define_stub_syms(symtab
);
3913 if (this->glink_
!= NULL
)
3915 int stub_size
= this->glink_
->pltresolve_size();
3916 Address value
= -stub_size
;
3922 this->define_local(symtab
, "__glink_PLTresolve",
3923 this->glink_
, value
, stub_size
);
3926 this->define_local(symtab
, "__glink", this->glink_
, 0, 0);
3933 template<int size
, bool big_endian
>
3935 Target_powerpc
<size
, big_endian
>::do_plt_fde_location(const Output_data
* plt
,
3936 unsigned char* oview
,
3940 uint64_t address
= plt
->address();
3941 off_t len
= plt
->data_size();
3943 if (plt
== this->glink_
)
3945 // See Output_data_glink::do_write() for glink contents.
3948 gold_assert(parameters
->doing_static_link());
3949 // Static linking may need stubs, to support ifunc and long
3950 // branches. We need to create an output section for
3951 // .eh_frame early in the link process, to have a place to
3952 // attach stub .eh_frame info. We also need to have
3953 // registered a CIE that matches the stub CIE. Both of
3954 // these requirements are satisfied by creating an FDE and
3955 // CIE for .glink, even though static linking will leave
3956 // .glink zero length.
3957 // ??? Hopefully generating an FDE with a zero address range
3958 // won't confuse anything that consumes .eh_frame info.
3960 else if (size
== 64)
3962 // There is one word before __glink_PLTresolve
3966 else if (parameters
->options().output_is_position_independent())
3968 // There are two FDEs for a position independent glink.
3969 // The first covers the branch table, the second
3970 // __glink_PLTresolve at the end of glink.
3971 off_t resolve_size
= this->glink_
->pltresolve_size();
3972 if (oview
[9] == elfcpp::DW_CFA_nop
)
3973 len
-= resolve_size
;
3976 address
+= len
- resolve_size
;
3983 // Must be a stub table.
3984 const Stub_table
<size
, big_endian
>* stub_table
3985 = static_cast<const Stub_table
<size
, big_endian
>*>(plt
);
3986 uint64_t stub_address
= stub_table
->stub_address();
3987 len
-= stub_address
- address
;
3988 address
= stub_address
;
3991 *paddress
= address
;
3995 // A class to handle the PLT data.
3997 template<int size
, bool big_endian
>
3998 class Output_data_plt_powerpc
: public Output_section_data_build
4001 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true,
4002 size
, big_endian
> Reloc_section
;
4004 Output_data_plt_powerpc(Target_powerpc
<size
, big_endian
>* targ
,
4005 Reloc_section
* plt_rel
,
4007 : Output_section_data_build(size
== 32 ? 4 : 8),
4013 // Add an entry to the PLT.
4018 add_ifunc_entry(Symbol
*);
4021 add_local_entry(Sized_relobj_file
<size
, big_endian
>*, unsigned int);
4024 add_local_ifunc_entry(Sized_relobj_file
<size
, big_endian
>*, unsigned int);
4026 // Return the .rela.plt section data.
4033 // Return the number of PLT entries.
4037 if (this->current_data_size() == 0)
4039 return ((this->current_data_size() - this->first_plt_entry_offset())
4040 / this->plt_entry_size());
4045 do_adjust_output_section(Output_section
* os
)
4050 // Write to a map file.
4052 do_print_to_mapfile(Mapfile
* mapfile
) const
4053 { mapfile
->print_output_data(this, this->name_
); }
4056 // Return the offset of the first non-reserved PLT entry.
4058 first_plt_entry_offset() const
4060 // IPLT and LPLT have no reserved entry.
4061 if (this->name_
[3] == 'I' || this->name_
[3] == 'L')
4063 return this->targ_
->first_plt_entry_offset();
4066 // Return the size of each PLT entry.
4068 plt_entry_size() const
4070 return this->targ_
->plt_entry_size();
4073 // Write out the PLT data.
4075 do_write(Output_file
*);
4077 // The reloc section.
4078 Reloc_section
* rel_
;
4079 // Allows access to .glink for do_write.
4080 Target_powerpc
<size
, big_endian
>* targ_
;
4081 // What to report in map file.
4085 // Add an entry to the PLT.
4087 template<int size
, bool big_endian
>
4089 Output_data_plt_powerpc
<size
, big_endian
>::add_entry(Symbol
* gsym
)
4091 if (!gsym
->has_plt_offset())
4093 section_size_type off
= this->current_data_size();
4095 off
+= this->first_plt_entry_offset();
4096 gsym
->set_plt_offset(off
);
4097 gsym
->set_needs_dynsym_entry();
4098 unsigned int dynrel
= elfcpp::R_POWERPC_JMP_SLOT
;
4099 this->rel_
->add_global(gsym
, dynrel
, this, off
, 0);
4100 off
+= this->plt_entry_size();
4101 this->set_current_data_size(off
);
4105 // Add an entry for a global ifunc symbol that resolves locally, to the IPLT.
4107 template<int size
, bool big_endian
>
4109 Output_data_plt_powerpc
<size
, big_endian
>::add_ifunc_entry(Symbol
* gsym
)
4111 if (!gsym
->has_plt_offset())
4113 section_size_type off
= this->current_data_size();
4114 gsym
->set_plt_offset(off
);
4115 unsigned int dynrel
= elfcpp::R_POWERPC_IRELATIVE
;
4116 if (size
== 64 && this->targ_
->abiversion() < 2)
4117 dynrel
= elfcpp::R_PPC64_JMP_IREL
;
4118 this->rel_
->add_symbolless_global_addend(gsym
, dynrel
, this, off
, 0);
4119 off
+= this->plt_entry_size();
4120 this->set_current_data_size(off
);
4124 // Add an entry for a local symbol to the PLT.
4126 template<int size
, bool big_endian
>
4128 Output_data_plt_powerpc
<size
, big_endian
>::add_local_entry(
4129 Sized_relobj_file
<size
, big_endian
>* relobj
,
4130 unsigned int local_sym_index
)
4132 if (!relobj
->local_has_plt_offset(local_sym_index
))
4134 section_size_type off
= this->current_data_size();
4135 relobj
->set_local_plt_offset(local_sym_index
, off
);
4138 unsigned int dynrel
= elfcpp::R_POWERPC_RELATIVE
;
4139 if (size
== 64 && this->targ_
->abiversion() < 2)
4140 dynrel
= elfcpp::R_POWERPC_JMP_SLOT
;
4141 this->rel_
->add_symbolless_local_addend(relobj
, local_sym_index
,
4142 dynrel
, this, off
, 0);
4144 off
+= this->plt_entry_size();
4145 this->set_current_data_size(off
);
4149 // Add an entry for a local ifunc symbol to the IPLT.
4151 template<int size
, bool big_endian
>
4153 Output_data_plt_powerpc
<size
, big_endian
>::add_local_ifunc_entry(
4154 Sized_relobj_file
<size
, big_endian
>* relobj
,
4155 unsigned int local_sym_index
)
4157 if (!relobj
->local_has_plt_offset(local_sym_index
))
4159 section_size_type off
= this->current_data_size();
4160 relobj
->set_local_plt_offset(local_sym_index
, off
);
4161 unsigned int dynrel
= elfcpp::R_POWERPC_IRELATIVE
;
4162 if (size
== 64 && this->targ_
->abiversion() < 2)
4163 dynrel
= elfcpp::R_PPC64_JMP_IREL
;
4164 this->rel_
->add_symbolless_local_addend(relobj
, local_sym_index
, dynrel
,
4166 off
+= this->plt_entry_size();
4167 this->set_current_data_size(off
);
4171 static const uint32_t add_0_11_11
= 0x7c0b5a14;
4172 static const uint32_t add_2_2_11
= 0x7c425a14;
4173 static const uint32_t add_2_2_12
= 0x7c426214;
4174 static const uint32_t add_3_3_2
= 0x7c631214;
4175 static const uint32_t add_3_3_13
= 0x7c636a14;
4176 static const uint32_t add_3_12_2
= 0x7c6c1214;
4177 static const uint32_t add_3_12_13
= 0x7c6c6a14;
4178 static const uint32_t add_11_0_11
= 0x7d605a14;
4179 static const uint32_t add_11_2_11
= 0x7d625a14;
4180 static const uint32_t add_11_11_2
= 0x7d6b1214;
4181 static const uint32_t add_12_11_12
= 0x7d8b6214;
4182 static const uint32_t addi_0_12
= 0x380c0000;
4183 static const uint32_t addi_2_2
= 0x38420000;
4184 static const uint32_t addi_3_3
= 0x38630000;
4185 static const uint32_t addi_11_11
= 0x396b0000;
4186 static const uint32_t addi_12_1
= 0x39810000;
4187 static const uint32_t addi_12_11
= 0x398b0000;
4188 static const uint32_t addi_12_12
= 0x398c0000;
4189 static const uint32_t addis_0_2
= 0x3c020000;
4190 static const uint32_t addis_0_13
= 0x3c0d0000;
4191 static const uint32_t addis_2_12
= 0x3c4c0000;
4192 static const uint32_t addis_11_2
= 0x3d620000;
4193 static const uint32_t addis_11_11
= 0x3d6b0000;
4194 static const uint32_t addis_11_30
= 0x3d7e0000;
4195 static const uint32_t addis_12_1
= 0x3d810000;
4196 static const uint32_t addis_12_2
= 0x3d820000;
4197 static const uint32_t addis_12_11
= 0x3d8b0000;
4198 static const uint32_t addis_12_12
= 0x3d8c0000;
4199 static const uint32_t b
= 0x48000000;
4200 static const uint32_t bcl_20_31
= 0x429f0005;
4201 static const uint32_t bctr
= 0x4e800420;
4202 static const uint32_t bctrl
= 0x4e800421;
4203 static const uint32_t beqlr
= 0x4d820020;
4204 static const uint32_t blr
= 0x4e800020;
4205 static const uint32_t bnectr_p4
= 0x4ce20420;
4206 static const uint32_t cmpld_7_12_0
= 0x7fac0040;
4207 static const uint32_t cmpldi_2_0
= 0x28220000;
4208 static const uint32_t cmpdi_11_0
= 0x2c2b0000;
4209 static const uint32_t cmpwi_11_0
= 0x2c0b0000;
4210 static const uint32_t cror_15_15_15
= 0x4def7b82;
4211 static const uint32_t cror_31_31_31
= 0x4ffffb82;
4212 static const uint32_t ld_0_1
= 0xe8010000;
4213 static const uint32_t ld_0_11
= 0xe80b0000;
4214 static const uint32_t ld_0_12
= 0xe80c0000;
4215 static const uint32_t ld_2_1
= 0xe8410000;
4216 static const uint32_t ld_2_2
= 0xe8420000;
4217 static const uint32_t ld_2_11
= 0xe84b0000;
4218 static const uint32_t ld_2_12
= 0xe84c0000;
4219 static const uint32_t ld_11_1
= 0xe9610000;
4220 static const uint32_t ld_11_2
= 0xe9620000;
4221 static const uint32_t ld_11_3
= 0xe9630000;
4222 static const uint32_t ld_11_11
= 0xe96b0000;
4223 static const uint32_t ld_12_2
= 0xe9820000;
4224 static const uint32_t ld_12_3
= 0xe9830000;
4225 static const uint32_t ld_12_11
= 0xe98b0000;
4226 static const uint32_t ld_12_12
= 0xe98c0000;
4227 static const uint32_t ldx_12_11_12
= 0x7d8b602a;
4228 static const uint32_t lfd_0_1
= 0xc8010000;
4229 static const uint32_t li_0_0
= 0x38000000;
4230 static const uint32_t li_11_0
= 0x39600000;
4231 static const uint32_t li_12_0
= 0x39800000;
4232 static const uint32_t lis_0
= 0x3c000000;
4233 static const uint32_t lis_2
= 0x3c400000;
4234 static const uint32_t lis_11
= 0x3d600000;
4235 static const uint32_t lis_12
= 0x3d800000;
4236 static const uint32_t lvx_0_12_0
= 0x7c0c00ce;
4237 static const uint32_t lwz_0_12
= 0x800c0000;
4238 static const uint32_t lwz_11_3
= 0x81630000;
4239 static const uint32_t lwz_11_11
= 0x816b0000;
4240 static const uint32_t lwz_11_30
= 0x817e0000;
4241 static const uint32_t lwz_12_3
= 0x81830000;
4242 static const uint32_t lwz_12_12
= 0x818c0000;
4243 static const uint32_t lwzu_0_12
= 0x840c0000;
4244 static const uint32_t mflr_0
= 0x7c0802a6;
4245 static const uint32_t mflr_11
= 0x7d6802a6;
4246 static const uint32_t mflr_12
= 0x7d8802a6;
4247 static const uint32_t mr_0_3
= 0x7c601b78;
4248 static const uint32_t mr_3_0
= 0x7c030378;
4249 static const uint32_t mtctr_0
= 0x7c0903a6;
4250 static const uint32_t mtctr_11
= 0x7d6903a6;
4251 static const uint32_t mtctr_12
= 0x7d8903a6;
4252 static const uint32_t mtlr_0
= 0x7c0803a6;
4253 static const uint32_t mtlr_11
= 0x7d6803a6;
4254 static const uint32_t mtlr_12
= 0x7d8803a6;
4255 static const uint32_t nop
= 0x60000000;
4256 static const uint32_t ori_0_0_0
= 0x60000000;
4257 static const uint32_t ori_11_11_0
= 0x616b0000;
4258 static const uint32_t ori_12_12_0
= 0x618c0000;
4259 static const uint32_t oris_12_12_0
= 0x658c0000;
4260 static const uint32_t sldi_11_11_34
= 0x796b1746;
4261 static const uint32_t sldi_12_12_32
= 0x799c07c6;
4262 static const uint32_t srdi_0_0_2
= 0x7800f082;
4263 static const uint32_t std_0_1
= 0xf8010000;
4264 static const uint32_t std_0_12
= 0xf80c0000;
4265 static const uint32_t std_2_1
= 0xf8410000;
4266 static const uint32_t std_11_1
= 0xf9610000;
4267 static const uint32_t stfd_0_1
= 0xd8010000;
4268 static const uint32_t stvx_0_12_0
= 0x7c0c01ce;
4269 static const uint32_t sub_11_11_12
= 0x7d6c5850;
4270 static const uint32_t sub_12_12_11
= 0x7d8b6050;
4271 static const uint32_t xor_2_12_12
= 0x7d826278;
4272 static const uint32_t xor_11_12_12
= 0x7d8b6278;
4274 static const uint64_t paddi_12_pc
= 0x0610000039800000ULL
;
4275 static const uint64_t pld_12_pc
= 0x04100000e5800000ULL
;
4276 static const uint64_t pnop
= 0x0700000000000000ULL
;
4278 // Write out the PLT.
4280 template<int size
, bool big_endian
>
4282 Output_data_plt_powerpc
<size
, big_endian
>::do_write(Output_file
* of
)
4284 if (size
== 32 && (this->name_
[3] != 'I' && this->name_
[3] != 'L'))
4286 const section_size_type offset
= this->offset();
4287 const section_size_type oview_size
4288 = convert_to_section_size_type(this->data_size());
4289 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
4290 unsigned char* pov
= oview
;
4291 unsigned char* endpov
= oview
+ oview_size
;
4293 // The address of the .glink branch table
4294 const Output_data_glink
<size
, big_endian
>* glink
4295 = this->targ_
->glink_section();
4296 elfcpp::Elf_types
<32>::Elf_Addr branch_tab
= glink
->address();
4298 while (pov
< endpov
)
4300 elfcpp::Swap
<32, big_endian
>::writeval(pov
, branch_tab
);
4305 of
->write_output_view(offset
, oview_size
, oview
);
4309 // Create the PLT section.
4311 template<int size
, bool big_endian
>
4313 Target_powerpc
<size
, big_endian
>::make_plt_section(Symbol_table
* symtab
,
4316 if (this->plt_
== NULL
)
4318 if (this->got_
== NULL
)
4319 this->got_section(symtab
, layout
);
4321 if (this->glink_
== NULL
)
4322 make_glink_section(layout
);
4324 // Ensure that .rela.dyn always appears before .rela.plt This is
4325 // necessary due to how, on PowerPC and some other targets, .rela.dyn
4326 // needs to include .rela.plt in its range.
4327 this->rela_dyn_section(layout
);
4329 Reloc_section
* plt_rel
= new Reloc_section(false);
4330 layout
->add_output_section_data(".rela.plt", elfcpp::SHT_RELA
,
4331 elfcpp::SHF_ALLOC
, plt_rel
,
4332 ORDER_DYNAMIC_PLT_RELOCS
, false);
4334 = new Output_data_plt_powerpc
<size
, big_endian
>(this, plt_rel
,
4336 layout
->add_output_section_data(".plt",
4338 ? elfcpp::SHT_PROGBITS
4339 : elfcpp::SHT_NOBITS
),
4340 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
4347 Output_section
* rela_plt_os
= plt_rel
->output_section();
4348 rela_plt_os
->set_info_section(this->plt_
->output_section());
4352 // Create the IPLT section.
4354 template<int size
, bool big_endian
>
4356 Target_powerpc
<size
, big_endian
>::make_iplt_section(Symbol_table
* symtab
,
4359 if (this->iplt_
== NULL
)
4361 this->make_plt_section(symtab
, layout
);
4362 this->make_lplt_section(layout
);
4364 Reloc_section
* iplt_rel
= new Reloc_section(false);
4365 if (this->rela_dyn_
->output_section())
4366 this->rela_dyn_
->output_section()->add_output_section_data(iplt_rel
);
4368 = new Output_data_plt_powerpc
<size
, big_endian
>(this, iplt_rel
,
4370 if (this->plt_
->output_section())
4371 this->plt_
->output_section()->add_output_section_data(this->iplt_
);
4375 // Create the LPLT section.
4377 template<int size
, bool big_endian
>
4379 Target_powerpc
<size
, big_endian
>::make_lplt_section(Layout
* layout
)
4381 if (this->lplt_
== NULL
)
4383 Reloc_section
* lplt_rel
= NULL
;
4384 if (parameters
->options().output_is_position_independent())
4386 lplt_rel
= new Reloc_section(false);
4387 this->rela_dyn_section(layout
);
4388 if (this->rela_dyn_
->output_section())
4389 this->rela_dyn_
->output_section()
4390 ->add_output_section_data(lplt_rel
);
4393 = new Output_data_plt_powerpc
<size
, big_endian
>(this, lplt_rel
,
4395 this->make_brlt_section(layout
);
4396 if (this->brlt_section_
&& this->brlt_section_
->output_section())
4397 this->brlt_section_
->output_section()
4398 ->add_output_section_data(this->lplt_
);
4400 layout
->add_output_section_data(".branch_lt",
4401 elfcpp::SHT_PROGBITS
,
4402 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
4409 // A section for huge long branch addresses, similar to plt section.
4411 template<int size
, bool big_endian
>
4412 class Output_data_brlt_powerpc
: public Output_section_data_build
4415 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
4416 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true,
4417 size
, big_endian
> Reloc_section
;
4419 Output_data_brlt_powerpc(Target_powerpc
<size
, big_endian
>* targ
,
4420 Reloc_section
* brlt_rel
)
4421 : Output_section_data_build(size
== 32 ? 4 : 8),
4429 this->reset_data_size();
4430 this->rel_
->reset_data_size();
4434 finalize_brlt_sizes()
4436 this->finalize_data_size();
4437 this->rel_
->finalize_data_size();
4440 // Add a reloc for an entry in the BRLT.
4442 add_reloc(Address to
, unsigned int off
)
4443 { this->rel_
->add_relative(elfcpp::R_POWERPC_RELATIVE
, this, off
, to
); }
4445 // Update section and reloc section size.
4447 set_current_size(unsigned int num_branches
)
4449 this->reset_address_and_file_offset();
4450 this->set_current_data_size(num_branches
* 16);
4451 this->finalize_data_size();
4452 Output_section
* os
= this->output_section();
4453 os
->set_section_offsets_need_adjustment();
4454 if (this->rel_
!= NULL
)
4456 const unsigned int reloc_size
= elfcpp::Elf_sizes
<size
>::rela_size
;
4457 this->rel_
->reset_address_and_file_offset();
4458 this->rel_
->set_current_data_size(num_branches
* reloc_size
);
4459 this->rel_
->finalize_data_size();
4460 Output_section
* os
= this->rel_
->output_section();
4461 os
->set_section_offsets_need_adjustment();
4467 do_adjust_output_section(Output_section
* os
)
4472 // Write to a map file.
4474 do_print_to_mapfile(Mapfile
* mapfile
) const
4475 { mapfile
->print_output_data(this, "** BRLT"); }
4478 // Write out the BRLT data.
4480 do_write(Output_file
*);
4482 // The reloc section.
4483 Reloc_section
* rel_
;
4484 Target_powerpc
<size
, big_endian
>* targ_
;
4487 // Make the branch lookup table section.
4489 template<int size
, bool big_endian
>
4491 Target_powerpc
<size
, big_endian
>::make_brlt_section(Layout
* layout
)
4493 if (size
== 64 && this->brlt_section_
== NULL
)
4495 Reloc_section
* brlt_rel
= NULL
;
4496 bool is_pic
= parameters
->options().output_is_position_independent();
4499 // When PIC we can't fill in .branch_lt but must initialise at
4500 // runtime via dynamic relocations.
4501 this->rela_dyn_section(layout
);
4502 brlt_rel
= new Reloc_section(false);
4503 if (this->rela_dyn_
->output_section())
4504 this->rela_dyn_
->output_section()
4505 ->add_output_section_data(brlt_rel
);
4508 = new Output_data_brlt_powerpc
<size
, big_endian
>(this, brlt_rel
);
4509 if (this->plt_
&& is_pic
&& this->plt_
->output_section())
4510 this->plt_
->output_section()
4511 ->add_output_section_data(this->brlt_section_
);
4513 layout
->add_output_section_data(".branch_lt",
4514 elfcpp::SHT_PROGBITS
,
4515 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
4516 this->brlt_section_
,
4522 // Write out .branch_lt when non-PIC.
4524 template<int size
, bool big_endian
>
4526 Output_data_brlt_powerpc
<size
, big_endian
>::do_write(Output_file
* of
)
4528 if (size
== 64 && !parameters
->options().output_is_position_independent())
4530 const section_size_type offset
= this->offset();
4531 const section_size_type oview_size
4532 = convert_to_section_size_type(this->data_size());
4533 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
4535 this->targ_
->write_branch_lookup_table(oview
);
4536 of
->write_output_view(offset
, oview_size
, oview
);
4540 static inline uint32_t
4546 static inline uint32_t
4552 static inline uint32_t
4555 return hi(a
+ 0x8000);
4558 static inline uint64_t
4561 return ((v
& 0x3ffff0000ULL
) << 16) | (v
& 0xffff);
4564 static inline uint64_t
4567 return (v
+ (1ULL << 33)) >> 34;
4573 static const unsigned char eh_frame_cie
[12];
4577 const unsigned char Eh_cie
<size
>::eh_frame_cie
[] =
4580 'z', 'R', 0, // Augmentation string.
4581 4, // Code alignment.
4582 0x80 - size
/ 8 , // Data alignment.
4584 1, // Augmentation size.
4585 (elfcpp::DW_EH_PE_pcrel
4586 | elfcpp::DW_EH_PE_sdata4
), // FDE encoding.
4587 elfcpp::DW_CFA_def_cfa
, 1, 0 // def_cfa: r1 offset 0.
4590 // Describe __glink_PLTresolve use of LR, 64-bit version ABIv1.
4591 static const unsigned char glink_eh_frame_fde_64v1
[] =
4593 0, 0, 0, 0, // Replaced with offset to .glink.
4594 0, 0, 0, 0, // Replaced with size of .glink.
4595 0, // Augmentation size.
4596 elfcpp::DW_CFA_advance_loc
+ 2,
4597 elfcpp::DW_CFA_register
, 65, 12,
4598 elfcpp::DW_CFA_advance_loc
+ 4,
4599 elfcpp::DW_CFA_restore_extended
, 65
4602 // Describe __glink_PLTresolve use of LR, 64-bit version ABIv2.
4603 static const unsigned char glink_eh_frame_fde_64v2
[] =
4605 0, 0, 0, 0, // Replaced with offset to .glink.
4606 0, 0, 0, 0, // Replaced with size of .glink.
4607 0, // Augmentation size.
4608 elfcpp::DW_CFA_advance_loc
+ 2,
4609 elfcpp::DW_CFA_register
, 65, 0,
4610 elfcpp::DW_CFA_advance_loc
+ 2,
4611 elfcpp::DW_CFA_restore_extended
, 65
4614 static const unsigned char glink_eh_frame_fde_64v2_localentry0
[] =
4616 0, 0, 0, 0, // Replaced with offset to .glink.
4617 0, 0, 0, 0, // Replaced with size of .glink.
4618 0, // Augmentation size.
4619 elfcpp::DW_CFA_advance_loc
+ 3,
4620 elfcpp::DW_CFA_register
, 65, 0,
4621 elfcpp::DW_CFA_advance_loc
+ 2,
4622 elfcpp::DW_CFA_restore_extended
, 65
4625 // Describe __glink_PLTresolve use of LR, 32-bit version.
4626 static const unsigned char glink_eh_frame_fde_32
[] =
4628 0, 0, 0, 0, // Replaced with offset to .glink.
4629 0, 0, 0, 0, // Replaced with size of .glink.
4630 0, // Augmentation size.
4631 elfcpp::DW_CFA_advance_loc
+ 2,
4632 elfcpp::DW_CFA_register
, 65, 0,
4633 elfcpp::DW_CFA_advance_loc
+ 4,
4634 elfcpp::DW_CFA_restore_extended
, 65
4637 static const unsigned char default_fde
[] =
4639 0, 0, 0, 0, // Replaced with offset to stubs.
4640 0, 0, 0, 0, // Replaced with size of stubs.
4641 0, // Augmentation size.
4642 elfcpp::DW_CFA_nop
, // Pad.
4647 template<bool big_endian
>
4649 write_insn(unsigned char* p
, uint32_t v
)
4651 elfcpp::Swap
<32, big_endian
>::writeval(p
, v
);
4655 static inline unsigned int
4658 if (!parameters
->options().user_set_plt_align())
4659 return size
== 64 ? 32 : 8;
4660 return 1 << parameters
->options().plt_align();
4663 // Stub_table holds information about plt and long branch stubs.
4664 // Stubs are built in an area following some input section determined
4665 // by group_sections(). This input section is converted to a relaxed
4666 // input section allowing it to be resized to accommodate the stubs
4668 template<int size
, bool big_endian
>
4669 class Stub_table
: public Output_relaxed_input_section
4674 Plt_stub_ent(unsigned int off
, unsigned int indx
)
4675 : off_(off
), indx_(indx
), iter_(0), notoc_(0), toc_(0),
4676 r2save_(0), localentry0_(0), tocoff_(0)
4681 unsigned int iter_
: 1;
4682 unsigned int notoc_
: 1;
4683 unsigned int toc_
: 1;
4684 unsigned int r2save_
: 1;
4685 unsigned int localentry0_
: 1;
4686 unsigned int tocoff_
: 8;
4688 struct Branch_stub_ent
4690 Branch_stub_ent(unsigned int off
, bool notoc
, bool save_res
)
4691 : off_(off
), iter_(0), notoc_(notoc
), toc_(0), save_res_(save_res
),
4692 other_(0), tocoff_(0)
4696 unsigned int iter_
: 1;
4697 unsigned int notoc_
: 1;
4698 unsigned int toc_
: 1;
4699 unsigned int save_res_
: 1;
4700 unsigned int other_
: 3;
4701 unsigned int tocoff_
: 8;
4703 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
4704 static const Address invalid_address
= static_cast<Address
>(0) - 1;
4706 Stub_table(Target_powerpc
<size
, big_endian
>* targ
,
4707 Output_section
* output_section
,
4708 const Output_section::Input_section
* owner
,
4710 : Output_relaxed_input_section(owner
->relobj(), owner
->shndx(),
4712 ->section_addralign(owner
->shndx())),
4713 targ_(targ
), plt_call_stubs_(), long_branch_stubs_(),
4714 orig_data_size_(owner
->current_data_size()),
4715 plt_size_(0), last_plt_size_(0),
4716 branch_size_(0), last_branch_size_(0), min_size_threshold_(0),
4717 need_save_res_(false), need_resize_(false), resizing_(false),
4720 this->set_output_section(output_section
);
4722 std::vector
<Output_relaxed_input_section
*> new_relaxed
;
4723 new_relaxed
.push_back(this);
4724 output_section
->convert_input_sections_to_relaxed_sections(new_relaxed
);
4727 // Add a plt call stub.
4729 add_plt_call_entry(Address
,
4730 const Sized_relobj_file
<size
, big_endian
>*,
4737 add_plt_call_entry(Address
,
4738 const Sized_relobj_file
<size
, big_endian
>*,
4744 // Find a given plt call stub.
4746 find_plt_call_entry(const Symbol
*) const;
4749 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
4750 unsigned int) const;
4753 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
4759 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
4764 // Add a long branch stub.
4766 add_long_branch_entry(const Powerpc_relobj
<size
, big_endian
>*,
4767 unsigned int, Address
, Address
, unsigned int, bool);
4769 const Branch_stub_ent
*
4770 find_long_branch_entry(const Powerpc_relobj
<size
, big_endian
>*,
4774 can_reach_stub(Address from
, unsigned int off
, unsigned int r_type
)
4776 Address max_branch_offset
= max_branch_delta
<size
>(r_type
);
4777 if (max_branch_offset
== 0)
4779 gold_assert(from
!= invalid_address
);
4780 Address loc
= off
+ this->stub_address();
4781 return loc
- from
+ max_branch_offset
< 2 * max_branch_offset
;
4785 clear_stubs(bool all
)
4787 this->plt_call_stubs_
.clear();
4788 this->plt_size_
= 0;
4789 this->long_branch_stubs_
.clear();
4790 this->branch_size_
= 0;
4791 this->need_save_res_
= false;
4794 this->last_plt_size_
= 0;
4795 this->last_branch_size_
= 0;
4801 { return need_resize_
; }
4804 set_resizing(bool val
)
4806 this->resizing_
= val
;
4809 this->need_resize_
= false;
4810 this->plt_size_
= 0;
4811 this->branch_size_
= 0;
4812 this->need_save_res_
= false;
4817 set_address_and_size(const Output_section
* os
, Address off
)
4819 Address start_off
= off
;
4820 off
+= this->orig_data_size_
;
4821 Address my_size
= this->plt_size_
+ this->branch_size_
;
4822 if (this->need_save_res_
)
4823 my_size
+= this->targ_
->savres_section()->data_size();
4825 off
= align_address(off
, this->stub_align());
4826 // Include original section size and alignment padding in size
4827 my_size
+= off
- start_off
;
4828 // Ensure new size is always larger than min size
4829 // threshold. Alignment requirement is included in "my_size", so
4830 // increase "my_size" does not invalidate alignment.
4831 if (my_size
< this->min_size_threshold_
)
4832 my_size
= this->min_size_threshold_
;
4833 this->reset_address_and_file_offset();
4834 this->set_current_data_size(my_size
);
4835 this->set_address_and_file_offset(os
->address() + start_off
,
4836 os
->offset() + start_off
);
4841 stub_address() const
4843 return align_address(this->address() + this->orig_data_size_
,
4844 this->stub_align());
4850 return align_address(this->offset() + this->orig_data_size_
,
4851 this->stub_align());
4856 { return this->plt_size_
; }
4860 { return this->branch_size_
; }
4863 set_min_size_threshold(Address min_size
)
4864 { this->min_size_threshold_
= min_size
; }
4867 define_stub_syms(Symbol_table
*);
4872 Output_section
* os
= this->output_section();
4873 if (os
->addralign() < this->stub_align())
4875 os
->set_addralign(this->stub_align());
4876 // FIXME: get rid of the insane checkpointing.
4877 // We can't increase alignment of the input section to which
4878 // stubs are attached; The input section may be .init which
4879 // is pasted together with other .init sections to form a
4880 // function. Aligning might insert zero padding resulting in
4881 // sigill. However we do need to increase alignment of the
4882 // output section so that the align_address() on offset in
4883 // set_address_and_size() adds the same padding as the
4884 // align_address() on address in stub_address().
4885 // What's more, we need this alignment for the layout done in
4886 // relaxation_loop_body() so that the output section starts at
4887 // a suitably aligned address.
4888 os
->checkpoint_set_addralign(this->stub_align());
4890 if (this->last_plt_size_
!= this->plt_size_
4891 || this->last_branch_size_
!= this->branch_size_
)
4893 this->last_plt_size_
= this->plt_size_
;
4894 this->last_branch_size_
= this->branch_size_
;
4900 // Add .eh_frame info for this stub section.
4902 add_eh_frame(Layout
* layout
);
4904 // Remove .eh_frame info for this stub section.
4906 remove_eh_frame(Layout
* layout
);
4908 Target_powerpc
<size
, big_endian
>*
4914 class Plt_stub_key_hash
;
4915 typedef Unordered_map
<Plt_stub_key
, Plt_stub_ent
,
4916 Plt_stub_key_hash
> Plt_stub_entries
;
4917 class Branch_stub_key
;
4918 class Branch_stub_key_hash
;
4919 typedef Unordered_map
<Branch_stub_key
, Branch_stub_ent
,
4920 Branch_stub_key_hash
> Branch_stub_entries
;
4922 // Alignment of stub section.
4926 unsigned int min_align
= size
== 64 ? 32 : 16;
4927 unsigned int user_align
= 1 << parameters
->options().plt_align();
4928 return std::max(user_align
, min_align
);
4931 // Return the plt offset for the given call stub.
4933 plt_off(typename
Plt_stub_entries::const_iterator p
,
4934 const Output_data_plt_powerpc
<size
, big_endian
>** sec
) const
4936 const Symbol
* gsym
= p
->first
.sym_
;
4938 return this->targ_
->plt_off(gsym
, sec
);
4941 const Sized_relobj_file
<size
, big_endian
>* relobj
= p
->first
.object_
;
4942 unsigned int local_sym_index
= p
->first
.locsym_
;
4943 return this->targ_
->plt_off(relobj
, local_sym_index
, sec
);
4947 // Size of a given plt call stub.
4949 plt_call_size(typename
Plt_stub_entries::iterator p
) const;
4952 plt_call_align(unsigned int bytes
) const
4954 unsigned int align
= param_plt_align
<size
>();
4955 return (bytes
+ align
- 1) & -align
;
4958 // Return long branch stub size.
4960 branch_stub_size(typename
Branch_stub_entries::iterator p
,
4964 build_tls_opt_head(unsigned char** pp
, bool save_lr
);
4967 build_tls_opt_tail(unsigned char* p
);
4970 plt_error(const Plt_stub_key
& p
);
4974 do_write(Output_file
*);
4976 // Plt call stub keys.
4980 Plt_stub_key(const Symbol
* sym
)
4981 : sym_(sym
), object_(0), addend_(0), locsym_(0)
4984 Plt_stub_key(const Sized_relobj_file
<size
, big_endian
>* object
,
4985 unsigned int locsym_index
)
4986 : sym_(NULL
), object_(object
), addend_(0), locsym_(locsym_index
)
4989 Plt_stub_key(const Sized_relobj_file
<size
, big_endian
>* object
,
4991 unsigned int r_type
,
4993 : sym_(sym
), object_(0), addend_(0), locsym_(0)
4996 this->addend_
= addend
;
4997 else if (parameters
->options().output_is_position_independent()
4998 && (r_type
== elfcpp::R_PPC_PLTREL24
4999 || r_type
== elfcpp::R_POWERPC_PLTCALL
))
5001 this->addend_
= addend
;
5002 if (this->addend_
>= 32768)
5003 this->object_
= object
;
5007 Plt_stub_key(const Sized_relobj_file
<size
, big_endian
>* object
,
5008 unsigned int locsym_index
,
5009 unsigned int r_type
,
5011 : sym_(NULL
), object_(object
), addend_(0), locsym_(locsym_index
)
5014 this->addend_
= addend
;
5015 else if (parameters
->options().output_is_position_independent()
5016 && (r_type
== elfcpp::R_PPC_PLTREL24
5017 || r_type
== elfcpp::R_POWERPC_PLTCALL
))
5018 this->addend_
= addend
;
5021 bool operator==(const Plt_stub_key
& that
) const
5023 return (this->sym_
== that
.sym_
5024 && this->object_
== that
.object_
5025 && this->addend_
== that
.addend_
5026 && this->locsym_
== that
.locsym_
);
5030 const Sized_relobj_file
<size
, big_endian
>* object_
;
5031 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend_
;
5032 unsigned int locsym_
;
5035 class Plt_stub_key_hash
5038 size_t operator()(const Plt_stub_key
& ent
) const
5040 return (reinterpret_cast<uintptr_t>(ent
.sym_
)
5041 ^ reinterpret_cast<uintptr_t>(ent
.object_
)
5047 // Long branch stub keys.
5048 class Branch_stub_key
5051 Branch_stub_key(const Powerpc_relobj
<size
, big_endian
>* obj
, Address to
)
5052 : dest_(to
), toc_base_off_(0)
5055 toc_base_off_
= obj
->toc_base_offset();
5058 bool operator==(const Branch_stub_key
& that
) const
5060 return (this->dest_
== that
.dest_
5062 || this->toc_base_off_
== that
.toc_base_off_
));
5066 unsigned int toc_base_off_
;
5069 class Branch_stub_key_hash
5072 size_t operator()(const Branch_stub_key
& key
) const
5073 { return key
.dest_
^ key
.toc_base_off_
; }
5076 // In a sane world this would be a global.
5077 Target_powerpc
<size
, big_endian
>* targ_
;
5078 // Map sym/object/addend to stub offset.
5079 Plt_stub_entries plt_call_stubs_
;
5080 // Map destination address to stub offset.
5081 Branch_stub_entries long_branch_stubs_
;
5082 // size of input section
5083 section_size_type orig_data_size_
;
5085 section_size_type plt_size_
, last_plt_size_
, branch_size_
, last_branch_size_
;
5086 // Some rare cases cause (PR/20529) fluctuation in stub table
5087 // size, which leads to an endless relax loop. This is to be fixed
5088 // by, after the first few iterations, allowing only increase of
5089 // stub table size. This variable sets the minimal possible size of
5090 // a stub table, it is zero for the first few iterations, then
5091 // increases monotonically.
5092 Address min_size_threshold_
;
5093 // Set if this stub group needs a copy of out-of-line register
5094 // save/restore functions.
5095 bool need_save_res_
;
5096 // Set when notoc_/r2save_ changes after sizing a stub
5098 // Set when resizing stubs
5100 // Per stub table unique identifier.
5104 // Add a plt call stub, if we do not already have one for this
5105 // sym/object/addend combo.
5107 template<int size
, bool big_endian
>
5109 Stub_table
<size
, big_endian
>::add_plt_call_entry(
5111 const Sized_relobj_file
<size
, big_endian
>* object
,
5113 unsigned int r_type
,
5117 Plt_stub_key
key(object
, gsym
, r_type
, addend
);
5118 Plt_stub_ent
ent(this->plt_size_
, this->plt_call_stubs_
.size());
5119 std::pair
<typename
Plt_stub_entries::iterator
, bool> p
5120 = this->plt_call_stubs_
.insert(std::make_pair(key
, ent
));
5124 && this->targ_
->is_elfv2_localentry0(gsym
))
5126 p
.first
->second
.localentry0_
= 1;
5127 this->targ_
->set_has_localentry0();
5129 if (r_type
== elfcpp::R_PPC64_REL24_NOTOC
)
5131 if (!p
.second
&& !p
.first
->second
.notoc_
5132 && (!this->targ_
->power10_stubs()
5133 || this->targ_
->power10_stubs_auto()))
5134 this->need_resize_
= true;
5135 p
.first
->second
.notoc_
= 1;
5139 if (!p
.second
&& !p
.first
->second
.toc_
)
5140 this->need_resize_
= true;
5141 p
.first
->second
.toc_
= 1;
5142 if (!tocsave
&& !p
.first
->second
.localentry0_
)
5144 if (!p
.second
&& !p
.first
->second
.r2save_
)
5145 this->need_resize_
= true;
5146 p
.first
->second
.r2save_
= 1;
5150 if (p
.second
|| (this->resizing_
&& !p
.first
->second
.iter_
))
5152 if (this->resizing_
)
5154 p
.first
->second
.iter_
= 1;
5155 p
.first
->second
.off_
= this->plt_size_
;
5157 this->plt_size_
+= this->plt_call_size(p
.first
);
5158 if (this->targ_
->is_tls_get_addr_opt(gsym
))
5159 this->targ_
->set_has_tls_get_addr_opt();
5160 this->plt_size_
= this->plt_call_align(this->plt_size_
);
5162 return this->can_reach_stub(from
, p
.first
->second
.off_
, r_type
);
5165 template<int size
, bool big_endian
>
5167 Stub_table
<size
, big_endian
>::add_plt_call_entry(
5169 const Sized_relobj_file
<size
, big_endian
>* object
,
5170 unsigned int locsym_index
,
5171 unsigned int r_type
,
5175 Plt_stub_key
key(object
, locsym_index
, r_type
, addend
);
5176 Plt_stub_ent
ent(this->plt_size_
, this->plt_call_stubs_
.size());
5177 std::pair
<typename
Plt_stub_entries::iterator
, bool> p
5178 = this->plt_call_stubs_
.insert(std::make_pair(key
, ent
));
5182 && this->targ_
->is_elfv2_localentry0(object
, locsym_index
))
5184 p
.first
->second
.localentry0_
= 1;
5185 this->targ_
->set_has_localentry0();
5187 if (r_type
== elfcpp::R_PPC64_REL24_NOTOC
)
5189 if (!p
.second
&& !p
.first
->second
.notoc_
5190 && (!this->targ_
->power10_stubs()
5191 || this->targ_
->power10_stubs_auto()))
5192 this->need_resize_
= true;
5193 p
.first
->second
.notoc_
= 1;
5197 if (!p
.second
&& !p
.first
->second
.toc_
)
5198 this->need_resize_
= true;
5199 p
.first
->second
.toc_
= 1;
5200 if (!tocsave
&& !p
.first
->second
.localentry0_
)
5202 if (!p
.second
&& !p
.first
->second
.r2save_
)
5203 this->need_resize_
= true;
5204 p
.first
->second
.r2save_
= 1;
5208 if (p
.second
|| (this->resizing_
&& !p
.first
->second
.iter_
))
5210 if (this->resizing_
)
5212 p
.first
->second
.iter_
= 1;
5213 p
.first
->second
.off_
= this->plt_size_
;
5215 this->plt_size_
+= this->plt_call_size(p
.first
);
5216 this->plt_size_
= this->plt_call_align(this->plt_size_
);
5218 return this->can_reach_stub(from
, p
.first
->second
.off_
, r_type
);
5221 // Find a plt call stub.
5223 template<int size
, bool big_endian
>
5224 const typename Stub_table
<size
, big_endian
>::Plt_stub_ent
*
5225 Stub_table
<size
, big_endian
>::find_plt_call_entry(
5226 const Sized_relobj_file
<size
, big_endian
>* object
,
5228 unsigned int r_type
,
5229 Address addend
) const
5231 Plt_stub_key
key(object
, gsym
, r_type
, addend
);
5232 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(key
);
5233 if (p
== this->plt_call_stubs_
.end())
5238 template<int size
, bool big_endian
>
5239 const typename Stub_table
<size
, big_endian
>::Plt_stub_ent
*
5240 Stub_table
<size
, big_endian
>::find_plt_call_entry(const Symbol
* gsym
) const
5242 Plt_stub_key
key(gsym
);
5243 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(key
);
5244 if (p
== this->plt_call_stubs_
.end())
5249 template<int size
, bool big_endian
>
5250 const typename Stub_table
<size
, big_endian
>::Plt_stub_ent
*
5251 Stub_table
<size
, big_endian
>::find_plt_call_entry(
5252 const Sized_relobj_file
<size
, big_endian
>* object
,
5253 unsigned int locsym_index
,
5254 unsigned int r_type
,
5255 Address addend
) const
5257 Plt_stub_key
key(object
, locsym_index
, r_type
, addend
);
5258 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(key
);
5259 if (p
== this->plt_call_stubs_
.end())
5264 template<int size
, bool big_endian
>
5265 const typename Stub_table
<size
, big_endian
>::Plt_stub_ent
*
5266 Stub_table
<size
, big_endian
>::find_plt_call_entry(
5267 const Sized_relobj_file
<size
, big_endian
>* object
,
5268 unsigned int locsym_index
) const
5270 Plt_stub_key
key(object
, locsym_index
);
5271 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(key
);
5272 if (p
== this->plt_call_stubs_
.end())
5277 // Add a long branch stub if we don't already have one to given
5280 template<int size
, bool big_endian
>
5282 Stub_table
<size
, big_endian
>::add_long_branch_entry(
5283 const Powerpc_relobj
<size
, big_endian
>* object
,
5284 unsigned int r_type
,
5290 Branch_stub_key
key(object
, to
);
5291 bool notoc
= (size
== 64 && r_type
== elfcpp::R_PPC64_REL24_NOTOC
);
5292 Branch_stub_ent
ent(this->branch_size_
, notoc
, save_res
);
5293 std::pair
<typename
Branch_stub_entries::iterator
, bool> p
5294 = this->long_branch_stubs_
.insert(std::make_pair(key
, ent
));
5297 if (!p
.second
&& !p
.first
->second
.notoc_
)
5298 this->need_resize_
= true;
5299 p
.first
->second
.notoc_
= true;
5303 if (!p
.second
&& !p
.first
->second
.toc_
)
5304 this->need_resize_
= true;
5305 p
.first
->second
.toc_
= true;
5307 if (p
.first
->second
.other_
== 0)
5308 p
.first
->second
.other_
= other
;
5309 gold_assert(save_res
== p
.first
->second
.save_res_
);
5310 if (p
.second
|| (this->resizing_
&& !p
.first
->second
.iter_
))
5312 if (this->resizing_
)
5314 p
.first
->second
.iter_
= 1;
5315 p
.first
->second
.off_
= this->branch_size_
;
5318 this->need_save_res_
= true;
5321 bool need_lt
= false;
5322 unsigned int stub_size
= this->branch_stub_size(p
.first
, &need_lt
);
5323 this->branch_size_
+= stub_size
;
5324 if (size
== 64 && need_lt
)
5325 this->targ_
->add_branch_lookup_table(to
);
5328 return this->can_reach_stub(from
, p
.first
->second
.off_
, r_type
);
5331 // Find long branch stub offset.
5333 template<int size
, bool big_endian
>
5334 const typename Stub_table
<size
, big_endian
>::Branch_stub_ent
*
5335 Stub_table
<size
, big_endian
>::find_long_branch_entry(
5336 const Powerpc_relobj
<size
, big_endian
>* object
,
5339 Branch_stub_key
key(object
, to
);
5340 typename
Branch_stub_entries::const_iterator p
5341 = this->long_branch_stubs_
.find(key
);
5342 if (p
== this->long_branch_stubs_
.end())
5347 template<bool big_endian
>
5349 eh_advance (std::vector
<unsigned char>& fde
, unsigned int delta
)
5353 fde
.push_back(elfcpp::DW_CFA_advance_loc
+ delta
);
5354 else if (delta
< 256)
5356 fde
.push_back(elfcpp::DW_CFA_advance_loc1
);
5357 fde
.push_back(delta
);
5359 else if (delta
< 65536)
5361 fde
.resize(fde
.size() + 3);
5362 unsigned char *p
= &*fde
.end() - 3;
5363 *p
++ = elfcpp::DW_CFA_advance_loc2
;
5364 elfcpp::Swap
<16, big_endian
>::writeval(p
, delta
);
5368 fde
.resize(fde
.size() + 5);
5369 unsigned char *p
= &*fde
.end() - 5;
5370 *p
++ = elfcpp::DW_CFA_advance_loc4
;
5371 elfcpp::Swap
<32, big_endian
>::writeval(p
, delta
);
5375 template<typename T
>
5377 stub_sort(T s1
, T s2
)
5379 return s1
->second
.off_
< s2
->second
.off_
;
5382 // Add .eh_frame info for this stub section. Unlike other linker
5383 // generated .eh_frame this is added late in the link, because we
5384 // only want the .eh_frame info if this particular stub section is
5387 template<int size
, bool big_endian
>
5389 Stub_table
<size
, big_endian
>::add_eh_frame(Layout
* layout
)
5392 || !parameters
->options().ld_generated_unwind_info())
5395 // Since we add stub .eh_frame info late, it must be placed
5396 // after all other linker generated .eh_frame info so that
5397 // merge mapping need not be updated for input sections.
5398 // There is no provision to use a different CIE to that used
5400 if (!this->targ_
->has_glink())
5403 typedef typename
Plt_stub_entries::iterator plt_iter
;
5404 std::vector
<plt_iter
> calls
;
5405 if (!this->plt_call_stubs_
.empty())
5406 for (plt_iter cs
= this->plt_call_stubs_
.begin();
5407 cs
!= this->plt_call_stubs_
.end();
5409 if ((this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
)
5410 && cs
->second
.r2save_
5411 && !cs
->second
.localentry0_
)
5412 || (cs
->second
.notoc_
5413 && !this->targ_
->power10_stubs()))
5414 calls
.push_back(cs
);
5415 if (calls
.size() > 1)
5416 std::stable_sort(calls
.begin(), calls
.end(),
5417 stub_sort
<plt_iter
>);
5419 typedef typename
Branch_stub_entries::const_iterator branch_iter
;
5420 std::vector
<branch_iter
> branches
;
5421 if (!this->long_branch_stubs_
.empty()
5422 && !this->targ_
->power10_stubs())
5423 for (branch_iter bs
= this->long_branch_stubs_
.begin();
5424 bs
!= this->long_branch_stubs_
.end();
5426 if (bs
->second
.notoc_
)
5427 branches
.push_back(bs
);
5428 if (branches
.size() > 1)
5429 std::stable_sort(branches
.begin(), branches
.end(),
5430 stub_sort
<branch_iter
>);
5432 if (calls
.empty() && branches
.empty())
5435 unsigned int last_eh_loc
= 0;
5436 // offset pcrel sdata4, size udata4, and augmentation size byte.
5437 std::vector
<unsigned char> fde(9, 0);
5439 for (unsigned int i
= 0; i
< calls
.size(); i
++)
5441 plt_iter cs
= calls
[i
];
5442 unsigned int off
= cs
->second
.off_
;
5443 // The __tls_get_addr_opt call stub needs to describe where
5444 // it saves LR, to support exceptions that might be thrown
5445 // from __tls_get_addr, and to support asynchronous exceptions.
5446 if (this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
5449 if (cs
->second
.r2save_
5450 && !cs
->second
.localentry0_
)
5453 eh_advance
<big_endian
>(fde
, off
- last_eh_loc
);
5454 fde
.resize(fde
.size() + 6);
5455 unsigned char* p
= &*fde
.end() - 6;
5456 *p
++ = elfcpp::DW_CFA_offset_extended_sf
;
5458 *p
++ = -(this->targ_
->stk_linker() / 8) & 0x7f;
5459 unsigned int delta
= this->plt_call_size(cs
) - 4 - 9 * 4;
5460 *p
++ = elfcpp::DW_CFA_advance_loc
+ delta
/ 4;
5461 *p
++ = elfcpp::DW_CFA_restore_extended
;
5463 last_eh_loc
= off
+ delta
;
5467 // notoc stubs also should describe LR changes, to support
5468 // asynchronous exceptions.
5469 off
+= (cs
->second
.r2save_
? 4 : 0) + 8;
5470 eh_advance
<big_endian
>(fde
, off
- last_eh_loc
);
5471 fde
.resize(fde
.size() + 6);
5472 unsigned char* p
= &*fde
.end() - 6;
5473 *p
++ = elfcpp::DW_CFA_register
;
5476 *p
++ = elfcpp::DW_CFA_advance_loc
+ 8 / 4;
5477 *p
++ = elfcpp::DW_CFA_restore_extended
;
5479 last_eh_loc
= off
+ 8;
5482 for (unsigned int i
= 0; i
< branches
.size(); i
++)
5484 branch_iter bs
= branches
[i
];
5485 unsigned int off
= bs
->second
.off_
+ 8;
5486 eh_advance
<big_endian
>(fde
, off
- last_eh_loc
);
5487 fde
.resize(fde
.size() + 6);
5488 unsigned char* p
= &*fde
.end() - 6;
5489 *p
++ = elfcpp::DW_CFA_register
;
5492 *p
++ = elfcpp::DW_CFA_advance_loc
+ 8 / 4;
5493 *p
++ = elfcpp::DW_CFA_restore_extended
;
5495 last_eh_loc
= off
+ 8;
5498 layout
->add_eh_frame_for_plt(this,
5499 Eh_cie
<size
>::eh_frame_cie
,
5500 sizeof (Eh_cie
<size
>::eh_frame_cie
),
5501 &*fde
.begin(), fde
.size());
5504 template<int size
, bool big_endian
>
5506 Stub_table
<size
, big_endian
>::remove_eh_frame(Layout
* layout
)
5509 && parameters
->options().ld_generated_unwind_info()
5510 && this->targ_
->has_glink())
5511 layout
->remove_eh_frame_for_plt(this,
5512 Eh_cie
<size
>::eh_frame_cie
,
5513 sizeof (Eh_cie
<size
>::eh_frame_cie
));
5516 // A class to handle .glink.
5518 template<int size
, bool big_endian
>
5519 class Output_data_glink
: public Output_section_data
5522 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
5523 static const Address invalid_address
= static_cast<Address
>(0) - 1;
5525 Output_data_glink(Target_powerpc
<size
, big_endian
>* targ
)
5526 : Output_section_data(16), targ_(targ
), global_entry_stubs_(),
5527 end_branch_table_(), ge_size_(0)
5531 add_eh_frame(Layout
* layout
);
5534 add_global_entry(const Symbol
*);
5537 find_global_entry(const Symbol
*) const;
5540 global_entry_align(unsigned int off
) const
5542 unsigned int align
= param_plt_align
<size
>();
5543 return (off
+ align
- 1) & -align
;
5547 global_entry_off() const
5549 return this->global_entry_align(this->end_branch_table_
);
5553 global_entry_address() const
5555 gold_assert(this->is_data_size_valid());
5556 return this->address() + this->global_entry_off();
5560 pltresolve_size() const
5564 + (this->targ_
->abiversion() < 2 ? 11 * 4
5565 : this->targ_
->has_localentry0() ? 14 * 4 : 13 * 4));
5570 // Write to a map file.
5572 do_print_to_mapfile(Mapfile
* mapfile
) const
5573 { mapfile
->print_output_data(this, _("** glink")); }
5577 set_final_data_size();
5581 do_write(Output_file
*);
5583 // Allows access to .got and .plt for do_write.
5584 Target_powerpc
<size
, big_endian
>* targ_
;
5586 // Map sym to stub offset.
5587 typedef Unordered_map
<const Symbol
*, unsigned int> Global_entry_stub_entries
;
5588 Global_entry_stub_entries global_entry_stubs_
;
5590 unsigned int end_branch_table_
, ge_size_
;
5593 template<int size
, bool big_endian
>
5595 Output_data_glink
<size
, big_endian
>::add_eh_frame(Layout
* layout
)
5597 if (!parameters
->options().ld_generated_unwind_info())
5602 if (this->targ_
->abiversion() < 2)
5603 layout
->add_eh_frame_for_plt(this,
5604 Eh_cie
<64>::eh_frame_cie
,
5605 sizeof (Eh_cie
<64>::eh_frame_cie
),
5606 glink_eh_frame_fde_64v1
,
5607 sizeof (glink_eh_frame_fde_64v1
));
5608 else if (this->targ_
->has_localentry0())
5609 layout
->add_eh_frame_for_plt(this,
5610 Eh_cie
<64>::eh_frame_cie
,
5611 sizeof (Eh_cie
<64>::eh_frame_cie
),
5612 glink_eh_frame_fde_64v2_localentry0
,
5613 sizeof (glink_eh_frame_fde_64v2
));
5615 layout
->add_eh_frame_for_plt(this,
5616 Eh_cie
<64>::eh_frame_cie
,
5617 sizeof (Eh_cie
<64>::eh_frame_cie
),
5618 glink_eh_frame_fde_64v2
,
5619 sizeof (glink_eh_frame_fde_64v2
));
5623 // 32-bit .glink can use the default since the CIE return
5624 // address reg, LR, is valid.
5625 layout
->add_eh_frame_for_plt(this,
5626 Eh_cie
<32>::eh_frame_cie
,
5627 sizeof (Eh_cie
<32>::eh_frame_cie
),
5629 sizeof (default_fde
));
5630 // Except where LR is used in a PIC __glink_PLTresolve.
5631 if (parameters
->options().output_is_position_independent())
5632 layout
->add_eh_frame_for_plt(this,
5633 Eh_cie
<32>::eh_frame_cie
,
5634 sizeof (Eh_cie
<32>::eh_frame_cie
),
5635 glink_eh_frame_fde_32
,
5636 sizeof (glink_eh_frame_fde_32
));
5640 template<int size
, bool big_endian
>
5642 Output_data_glink
<size
, big_endian
>::add_global_entry(const Symbol
* gsym
)
5644 unsigned int off
= this->global_entry_align(this->ge_size_
);
5645 std::pair
<typename
Global_entry_stub_entries::iterator
, bool> p
5646 = this->global_entry_stubs_
.insert(std::make_pair(gsym
, off
));
5648 this->ge_size_
= off
+ 16;
5651 template<int size
, bool big_endian
>
5652 typename Output_data_glink
<size
, big_endian
>::Address
5653 Output_data_glink
<size
, big_endian
>::find_global_entry(const Symbol
* gsym
) const
5655 typename
Global_entry_stub_entries::const_iterator p
5656 = this->global_entry_stubs_
.find(gsym
);
5657 return p
== this->global_entry_stubs_
.end() ? invalid_address
: p
->second
;
5660 template<int size
, bool big_endian
>
5662 Output_data_glink
<size
, big_endian
>::set_final_data_size()
5664 unsigned int count
= this->targ_
->plt_entry_count();
5665 section_size_type total
= 0;
5671 // space for branch table
5672 total
+= 4 * (count
- 1);
5674 total
+= -total
& 15;
5675 total
+= this->pltresolve_size();
5679 total
+= this->pltresolve_size();
5681 // space for branch table
5683 if (this->targ_
->abiversion() < 2)
5687 total
+= 4 * (count
- 0x8000);
5691 this->end_branch_table_
= total
;
5692 total
= this->global_entry_align(total
);
5693 total
+= this->ge_size_
;
5695 this->set_data_size(total
);
5698 // Define symbols on stubs, identifying the stub.
5700 template<int size
, bool big_endian
>
5702 Stub_table
<size
, big_endian
>::define_stub_syms(Symbol_table
* symtab
)
5704 if (!this->plt_call_stubs_
.empty())
5706 // The key for the plt call stub hash table includes addresses,
5707 // therefore traversal order depends on those addresses, which
5708 // can change between runs if gold is a PIE. Unfortunately the
5709 // output .symtab ordering depends on the order in which symbols
5710 // are added to the linker symtab. We want reproducible output
5711 // so must sort the call stub symbols.
5712 typedef typename
Plt_stub_entries::iterator plt_iter
;
5713 std::vector
<plt_iter
> sorted
;
5714 sorted
.resize(this->plt_call_stubs_
.size());
5716 for (plt_iter cs
= this->plt_call_stubs_
.begin();
5717 cs
!= this->plt_call_stubs_
.end();
5719 sorted
[cs
->second
.indx_
] = cs
;
5721 for (unsigned int i
= 0; i
< this->plt_call_stubs_
.size(); ++i
)
5723 plt_iter cs
= sorted
[i
];
5726 if (cs
->first
.addend_
!= 0)
5727 sprintf(add
, "+%x", static_cast<uint32_t>(cs
->first
.addend_
));
5730 if (cs
->first
.object_
)
5732 const Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
5733 <const Powerpc_relobj
<size
, big_endian
>*>(cs
->first
.object_
);
5734 sprintf(obj
, "%x:", ppcobj
->uniq());
5737 const char *symname
;
5738 if (cs
->first
.sym_
== NULL
)
5740 sprintf(localname
, "%x", cs
->first
.locsym_
);
5741 symname
= localname
;
5743 else if (this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
5744 symname
= this->targ_
->tls_get_addr_opt()->name();
5746 symname
= cs
->first
.sym_
->name();
5747 char* name
= new char[8 + 10 + strlen(obj
) + strlen(symname
) + strlen(add
) + 1];
5748 sprintf(name
, "%08x.plt_call.%s%s%s", this->uniq_
, obj
, symname
, add
);
5750 = this->stub_address() - this->address() + cs
->second
.off_
;
5751 unsigned int stub_size
= this->plt_call_align(this->plt_call_size(cs
));
5752 this->targ_
->define_local(symtab
, name
, this, value
, stub_size
);
5756 typedef typename
Branch_stub_entries::iterator branch_iter
;
5757 for (branch_iter bs
= this->long_branch_stubs_
.begin();
5758 bs
!= this->long_branch_stubs_
.end();
5761 if (bs
->second
.save_res_
)
5764 char* name
= new char[8 + 13 + 16 + 1];
5765 sprintf(name
, "%08x.long_branch.%llx", this->uniq_
,
5766 static_cast<unsigned long long>(bs
->first
.dest_
));
5767 Address value
= (this->stub_address() - this->address()
5768 + this->plt_size_
+ bs
->second
.off_
);
5769 bool need_lt
= false;
5770 unsigned int stub_size
= this->branch_stub_size(bs
, &need_lt
);
5771 this->targ_
->define_local(symtab
, name
, this, value
, stub_size
);
5775 // Emit the start of a __tls_get_addr_opt plt call stub.
5777 template<int size
, bool big_endian
>
5779 Stub_table
<size
, big_endian
>::build_tls_opt_head(unsigned char** pp
,
5782 unsigned char* p
= *pp
;
5785 write_insn
<big_endian
>(p
, ld_11_3
+ 0);
5787 write_insn
<big_endian
>(p
, ld_12_3
+ 8);
5789 write_insn
<big_endian
>(p
, mr_0_3
);
5791 write_insn
<big_endian
>(p
, cmpdi_11_0
);
5793 write_insn
<big_endian
>(p
, add_3_12_13
);
5795 write_insn
<big_endian
>(p
, beqlr
);
5797 write_insn
<big_endian
>(p
, mr_3_0
);
5801 write_insn
<big_endian
>(p
, mflr_11
);
5803 write_insn
<big_endian
>(p
, (std_11_1
+ this->targ_
->stk_linker()));
5809 write_insn
<big_endian
>(p
, lwz_11_3
+ 0);
5811 write_insn
<big_endian
>(p
, lwz_12_3
+ 4);
5813 write_insn
<big_endian
>(p
, mr_0_3
);
5815 write_insn
<big_endian
>(p
, cmpwi_11_0
);
5817 write_insn
<big_endian
>(p
, add_3_12_2
);
5819 write_insn
<big_endian
>(p
, beqlr
);
5821 write_insn
<big_endian
>(p
, mr_3_0
);
5823 write_insn
<big_endian
>(p
, nop
);
5829 // Emit the tail of a __tls_get_addr_opt plt call stub.
5831 template<int size
, bool big_endian
>
5833 Stub_table
<size
, big_endian
>::build_tls_opt_tail(unsigned char* p
)
5835 write_insn
<big_endian
>(p
, bctrl
);
5837 write_insn
<big_endian
>(p
, ld_2_1
+ this->targ_
->stk_toc());
5839 write_insn
<big_endian
>(p
, ld_11_1
+ this->targ_
->stk_linker());
5841 write_insn
<big_endian
>(p
, mtlr_11
);
5843 write_insn
<big_endian
>(p
, blr
);
5846 // Emit pc-relative plt call stub code.
5848 template<bool big_endian
>
5849 static unsigned char*
5850 build_power10_offset(unsigned char* p
, uint64_t off
, uint64_t odd
, bool load
)
5853 if (off
- odd
+ (1ULL << 33) < 1ULL << 34)
5858 write_insn
<big_endian
>(p
, nop
);
5866 write_insn
<big_endian
>(p
, insn
>> 32);
5868 write_insn
<big_endian
>(p
, insn
& 0xffffffff);
5870 else if (off
- (8 - odd
) + (0x20002ULL
<< 32) < 0x40004ULL
<< 32)
5873 write_insn
<big_endian
>(p
, li_11_0
| (ha34(off
) & 0xffff));
5877 write_insn
<big_endian
>(p
, sldi_11_11_34
);
5880 insn
= paddi_12_pc
| d34(off
);
5881 write_insn
<big_endian
>(p
, insn
>> 32);
5883 write_insn
<big_endian
>(p
, insn
& 0xffffffff);
5887 write_insn
<big_endian
>(p
, sldi_11_11_34
);
5891 write_insn
<big_endian
>(p
, ldx_12_11_12
);
5893 write_insn
<big_endian
>(p
, add_12_11_12
);
5898 write_insn
<big_endian
>(p
, lis_11
| ((ha34(off
) >> 16) & 0x3fff));
5900 write_insn
<big_endian
>(p
, ori_11_11_0
| (ha34(off
) & 0xffff));
5904 write_insn
<big_endian
>(p
, sldi_11_11_34
);
5907 insn
= paddi_12_pc
| d34(off
);
5908 write_insn
<big_endian
>(p
, insn
>> 32);
5910 write_insn
<big_endian
>(p
, insn
& 0xffffffff);
5914 write_insn
<big_endian
>(p
, sldi_11_11_34
);
5918 write_insn
<big_endian
>(p
, ldx_12_11_12
);
5920 write_insn
<big_endian
>(p
, add_12_11_12
);
5926 // Gets the address of a label (1:) in r11 and builds an offset in r12,
5927 // then adds it to r11 (LOAD false) or loads r12 from r11+r12 (LOAD true).
5932 // lis %r12,xxx-1b@highest
5933 // ori %r12,%r12,xxx-1b@higher
5934 // sldi %r12,%r12,32
5935 // oris %r12,%r12,xxx-1b@high
5936 // ori %r12,%r12,xxx-1b@l
5937 // add/ldx %r12,%r11,%r12
5939 template<bool big_endian
>
5940 static unsigned char*
5941 build_notoc_offset(unsigned char* p
, uint64_t off
, bool load
)
5943 write_insn
<big_endian
>(p
, mflr_12
);
5945 write_insn
<big_endian
>(p
, bcl_20_31
);
5947 write_insn
<big_endian
>(p
, mflr_11
);
5949 write_insn
<big_endian
>(p
, mtlr_12
);
5951 if (off
+ 0x8000 < 0x10000)
5954 write_insn
<big_endian
>(p
, ld_12_11
+ l(off
));
5956 write_insn
<big_endian
>(p
, addi_12_11
+ l(off
));
5958 else if (off
+ 0x80008000ULL
< 0x100000000ULL
)
5960 write_insn
<big_endian
>(p
, addis_12_11
+ ha(off
));
5963 write_insn
<big_endian
>(p
, ld_12_12
+ l(off
));
5965 write_insn
<big_endian
>(p
, addi_12_12
+ l(off
));
5969 if (off
+ 0x800000000000ULL
< 0x1000000000000ULL
)
5971 write_insn
<big_endian
>(p
, li_12_0
+ ((off
>> 32) & 0xffff));
5976 write_insn
<big_endian
>(p
, lis_12
+ ((off
>> 48) & 0xffff));
5978 if (((off
>> 32) & 0xffff) != 0)
5980 write_insn
<big_endian
>(p
, ori_12_12_0
+ ((off
>> 32) & 0xffff));
5984 if (((off
>> 32) & 0xffffffffULL
) != 0)
5986 write_insn
<big_endian
>(p
, sldi_12_12_32
);
5991 write_insn
<big_endian
>(p
, oris_12_12_0
+ hi(off
));
5996 write_insn
<big_endian
>(p
, ori_12_12_0
+ l(off
));
6000 write_insn
<big_endian
>(p
, ldx_12_11_12
);
6002 write_insn
<big_endian
>(p
, add_12_11_12
);
6008 // Size of a given plt call stub.
6010 template<int size
, bool big_endian
>
6012 Stub_table
<size
, big_endian
>::plt_call_size(
6013 typename
Plt_stub_entries::iterator p
) const
6017 const Symbol
* gsym
= p
->first
.sym_
;
6019 + (this->targ_
->is_tls_get_addr_opt(gsym
) ? 8 * 4 : 0));
6022 const Output_data_plt_powerpc
<size
, big_endian
>* plt
;
6023 uint64_t plt_addr
= this->plt_off(p
, &plt
);
6024 plt_addr
+= plt
->address();
6025 if (this->targ_
->power10_stubs()
6026 && this->targ_
->power10_stubs_auto())
6028 unsigned int bytes
= 0;
6029 if (p
->second
.notoc_
)
6031 if (this->targ_
->is_tls_get_addr_opt(p
->first
.sym_
))
6033 uint64_t from
= this->stub_address() + p
->second
.off_
+ bytes
;
6034 uint64_t odd
= from
& 4;
6035 uint64_t off
= plt_addr
- from
;
6036 if (off
- odd
+ (1ULL << 33) < 1ULL << 34)
6037 bytes
+= odd
+ 4 * 4;
6038 else if (off
- (8 - odd
) + (0x20002ULL
<< 32) < 0x40004ULL
<< 32)
6042 bytes
= this->plt_call_align(bytes
);
6044 unsigned int tail
= 0;
6047 p
->second
.tocoff_
= bytes
;
6048 if (this->targ_
->is_tls_get_addr_opt(p
->first
.sym_
))
6051 if (p
->second
.r2save_
&& !p
->second
.localentry0_
)
6057 if (p
->second
.r2save_
)
6060 = this->targ_
->got_section()->output_section()->address();
6061 const Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
6062 <const Powerpc_relobj
<size
, big_endian
>*>(p
->first
.object_
);
6063 got_addr
+= ppcobj
->toc_base_offset();
6064 uint64_t off
= plt_addr
- got_addr
;
6065 bytes
+= 3 * 4 + 4 * (ha(off
) != 0);
6067 return bytes
+ tail
;
6071 unsigned int bytes
= 0;
6072 unsigned int tail
= 0;
6073 if (this->targ_
->is_tls_get_addr_opt(p
->first
.sym_
))
6076 if (p
->second
.r2save_
&& !p
->second
.localentry0_
)
6083 if (p
->second
.r2save_
)
6086 if (this->targ_
->power10_stubs())
6088 uint64_t from
= this->stub_address() + p
->second
.off_
+ bytes
;
6089 uint64_t odd
= from
& 4;
6090 uint64_t off
= plt_addr
- from
;
6091 if (off
- odd
+ (1ULL << 33) < 1ULL << 34)
6092 bytes
+= odd
+ 4 * 4;
6093 else if (off
- (8 - odd
) + (0x20002ULL
<< 32) < 0x40004ULL
<< 32)
6097 return bytes
+ tail
;
6100 if (p
->second
.notoc_
)
6102 uint64_t from
= this->stub_address() + p
->second
.off_
+ bytes
+ 2 * 4;
6103 uint64_t off
= plt_addr
- from
;
6104 if (off
+ 0x8000 < 0x10000)
6106 else if (off
+ 0x80008000ULL
< 0x100000000ULL
)
6111 if (off
+ 0x800000000000ULL
>= 0x1000000000000ULL
6112 && ((off
>> 32) & 0xffff) != 0)
6114 if (((off
>> 32) & 0xffffffffULL
) != 0)
6121 return bytes
+ tail
;
6124 uint64_t got_addr
= this->targ_
->got_section()->output_section()->address();
6125 const Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
6126 <const Powerpc_relobj
<size
, big_endian
>*>(p
->first
.object_
);
6127 got_addr
+= ppcobj
->toc_base_offset();
6128 uint64_t off
= plt_addr
- got_addr
;
6129 bytes
+= 3 * 4 + 4 * (ha(off
) != 0);
6130 if (this->targ_
->abiversion() < 2)
6132 bool static_chain
= parameters
->options().plt_static_chain();
6133 bool thread_safe
= this->targ_
->plt_thread_safe();
6137 + 4 * (ha(off
+ 8 + 8 * static_chain
) != ha(off
)));
6139 return bytes
+ tail
;
6143 // Return long branch stub size.
6145 template<int size
, bool big_endian
>
6147 Stub_table
<size
, big_endian
>::branch_stub_size(
6148 typename
Branch_stub_entries::iterator p
,
6151 Address loc
= this->stub_address() + this->last_plt_size_
+ p
->second
.off_
;
6154 if (p
->first
.dest_
- loc
+ (1 << 25) < 2 << 25)
6156 if (parameters
->options().output_is_position_independent())
6161 uint64_t off
= p
->first
.dest_
- loc
;
6162 unsigned int bytes
= 0;
6163 if (p
->second
.notoc_
)
6165 if (this->targ_
->power10_stubs())
6167 Address odd
= loc
& 4;
6168 if (off
+ (1 << 25) < 2 << 25)
6170 else if (off
- odd
+ (1ULL << 33) < 1ULL << 34)
6172 else if (off
- (8 - odd
) + (0x20002ULL
<< 32) < 0x40004ULL
<< 32)
6176 if (!(p
->second
.toc_
&& this->targ_
->power10_stubs_auto()))
6178 p
->second
.tocoff_
= bytes
;
6183 if (off
+ 0x8000 < 0x10000)
6185 if (off
+ 0x80008000ULL
< 0x100000000ULL
)
6187 if (off
+ 24 + (1 << 25) < 2 << 25)
6193 if (off
+ 0x800000000000ULL
>= 0x1000000000000ULL
6194 && ((off
>> 32) & 0xffff) != 0)
6196 if (((off
>> 32) & 0xffffffffULL
) != 0)
6206 off
+= elfcpp::ppc64_decode_local_entry(p
->second
.other_
);
6207 if (off
+ (1 << 25) < 2 << 25)
6209 if (!this->targ_
->power10_stubs()
6210 || (p
->second
.toc_
&& this->targ_
->power10_stubs_auto()))
6215 template<int size
, bool big_endian
>
6217 Stub_table
<size
, big_endian
>::plt_error(const Plt_stub_key
& p
)
6220 gold_error(_("linkage table error against `%s'"),
6221 p
.sym_
->demangled_name().c_str());
6223 gold_error(_("linkage table error against `%s:[local %u]'"),
6224 p
.object_
->name().c_str(),
6228 // Write out plt and long branch stub code.
6230 template<int size
, bool big_endian
>
6232 Stub_table
<size
, big_endian
>::do_write(Output_file
* of
)
6234 if (this->plt_call_stubs_
.empty()
6235 && this->long_branch_stubs_
.empty())
6238 const section_size_type start_off
= this->offset();
6239 const section_size_type off
= this->stub_offset();
6240 const section_size_type oview_size
=
6241 convert_to_section_size_type(this->data_size() - (off
- start_off
));
6242 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
6246 && this->targ_
->power10_stubs())
6248 const Output_data_got_powerpc
<size
, big_endian
>* got
6249 = this->targ_
->got_section();
6250 Address got_os_addr
= got
->output_section()->address();
6252 if (!this->plt_call_stubs_
.empty())
6254 // Write out plt call stubs.
6255 typename
Plt_stub_entries::const_iterator cs
;
6256 for (cs
= this->plt_call_stubs_
.begin();
6257 cs
!= this->plt_call_stubs_
.end();
6260 p
= oview
+ cs
->second
.off_
;
6261 const Output_data_plt_powerpc
<size
, big_endian
>* plt
;
6262 Address pltoff
= this->plt_off(cs
, &plt
);
6263 Address plt_addr
= pltoff
+ plt
->address();
6264 if (this->targ_
->power10_stubs_auto())
6266 if (cs
->second
.notoc_
)
6268 if (this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
6269 this->build_tls_opt_head(&p
, false);
6270 Address from
= this->stub_address() + (p
- oview
);
6271 Address delta
= plt_addr
- from
;
6272 p
= build_power10_offset
<big_endian
>(p
, delta
, from
& 4,
6274 write_insn
<big_endian
>(p
, mtctr_12
);
6276 write_insn
<big_endian
>(p
, bctr
);
6278 p
= oview
+ this->plt_call_align(p
- oview
);
6280 if (cs
->second
.toc_
)
6282 if (this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
6285 = cs
->second
.r2save_
&& !cs
->second
.localentry0_
;
6286 this->build_tls_opt_head(&p
, save_lr
);
6288 const Powerpc_relobj
<size
, big_endian
>* ppcobj
6289 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>(
6291 Address got_addr
= got_os_addr
+ ppcobj
->toc_base_offset();
6292 Address off
= plt_addr
- got_addr
;
6294 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
6295 this->plt_error(cs
->first
);
6297 if (cs
->second
.r2save_
)
6299 write_insn
<big_endian
>(p
, std_2_1
+ this->targ_
->stk_toc());
6304 write_insn
<big_endian
>(p
, addis_12_2
+ ha(off
));
6306 write_insn
<big_endian
>(p
, ld_12_12
+ l(off
));
6311 write_insn
<big_endian
>(p
, ld_12_2
+ l(off
));
6314 write_insn
<big_endian
>(p
, mtctr_12
);
6316 if (cs
->second
.r2save_
6317 && !cs
->second
.localentry0_
6318 && this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
6319 this->build_tls_opt_tail(p
);
6321 write_insn
<big_endian
>(p
, bctr
);
6326 if (this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
6329 = cs
->second
.r2save_
&& !cs
->second
.localentry0_
;
6330 this->build_tls_opt_head(&p
, save_lr
);
6332 if (cs
->second
.r2save_
)
6334 write_insn
<big_endian
>(p
, std_2_1
+ this->targ_
->stk_toc());
6337 Address from
= this->stub_address() + (p
- oview
);
6338 Address delta
= plt_addr
- from
;
6339 p
= build_power10_offset
<big_endian
>(p
, delta
, from
& 4, true);
6340 write_insn
<big_endian
>(p
, mtctr_12
);
6342 if (cs
->second
.r2save_
6343 && !cs
->second
.localentry0_
6344 && this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
6345 this->build_tls_opt_tail(p
);
6347 write_insn
<big_endian
>(p
, bctr
);
6352 // Write out long branch stubs.
6353 typename
Branch_stub_entries::const_iterator bs
;
6354 for (bs
= this->long_branch_stubs_
.begin();
6355 bs
!= this->long_branch_stubs_
.end();
6358 if (bs
->second
.save_res_
)
6360 Address off
= this->plt_size_
+ bs
->second
.off_
;
6362 Address loc
= this->stub_address() + off
;
6363 Address delta
= bs
->first
.dest_
- loc
;
6364 if (this->targ_
->power10_stubs_auto())
6366 if (bs
->second
.notoc_
)
6368 unsigned char* startp
= p
;
6369 p
= build_power10_offset
<big_endian
>(p
, delta
,
6371 delta
-= p
- startp
;
6373 if (delta
+ (1 << 25) < 2 << 25)
6374 write_insn
<big_endian
>(p
, b
| (delta
& 0x3fffffc));
6377 write_insn
<big_endian
>(p
, mtctr_12
);
6379 write_insn
<big_endian
>(p
, bctr
);
6382 delta
-= p
- startp
;
6384 if (bs
->second
.toc_
)
6386 delta
+= elfcpp::ppc64_decode_local_entry(bs
->second
.other_
);
6387 if (delta
+ (1 << 25) >= 2 << 25)
6390 = this->targ_
->find_branch_lookup_table(bs
->first
.dest_
);
6391 gold_assert(brlt_addr
!= invalid_address
);
6392 brlt_addr
+= this->targ_
->brlt_section()->address();
6393 Address got_addr
= got_os_addr
+ bs
->first
.toc_base_off_
;
6394 Address brltoff
= brlt_addr
- got_addr
;
6395 if (ha(brltoff
) == 0)
6397 write_insn
<big_endian
>(p
, ld_12_2
+ l(brltoff
));
6402 write_insn
<big_endian
>(p
, addis_12_2
+ ha(brltoff
));
6404 write_insn
<big_endian
>(p
, ld_12_12
+ l(brltoff
));
6408 if (delta
+ (1 << 25) < 2 << 25)
6409 write_insn
<big_endian
>(p
, b
| (delta
& 0x3fffffc));
6412 write_insn
<big_endian
>(p
, mtctr_12
);
6414 write_insn
<big_endian
>(p
, bctr
);
6420 if (!bs
->second
.notoc_
)
6421 delta
+= elfcpp::ppc64_decode_local_entry(bs
->second
.other_
);
6422 if (bs
->second
.notoc_
|| delta
+ (1 << 25) >= 2 << 25)
6424 unsigned char* startp
= p
;
6425 p
= build_power10_offset
<big_endian
>(p
, delta
,
6427 delta
-= p
- startp
;
6429 if (delta
+ (1 << 25) < 2 << 25)
6430 write_insn
<big_endian
>(p
, b
| (delta
& 0x3fffffc));
6433 write_insn
<big_endian
>(p
, mtctr_12
);
6435 write_insn
<big_endian
>(p
, bctr
);
6440 else if (size
== 64)
6442 const Output_data_got_powerpc
<size
, big_endian
>* got
6443 = this->targ_
->got_section();
6444 Address got_os_addr
= got
->output_section()->address();
6446 if (!this->plt_call_stubs_
.empty()
6447 && this->targ_
->abiversion() >= 2)
6449 // Write out plt call stubs for ELFv2.
6450 typename
Plt_stub_entries::const_iterator cs
;
6451 for (cs
= this->plt_call_stubs_
.begin();
6452 cs
!= this->plt_call_stubs_
.end();
6455 const Output_data_plt_powerpc
<size
, big_endian
>* plt
;
6456 Address pltoff
= this->plt_off(cs
, &plt
);
6457 Address plt_addr
= pltoff
+ plt
->address();
6459 p
= oview
+ cs
->second
.off_
;
6460 if (this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
6462 bool save_lr
= cs
->second
.r2save_
&& !cs
->second
.localentry0_
;
6463 this->build_tls_opt_head(&p
, save_lr
);
6465 if (cs
->second
.r2save_
)
6467 write_insn
<big_endian
>(p
, std_2_1
+ this->targ_
->stk_toc());
6470 if (cs
->second
.notoc_
)
6472 Address from
= this->stub_address() + (p
- oview
) + 8;
6473 Address off
= plt_addr
- from
;
6474 p
= build_notoc_offset
<big_endian
>(p
, off
, true);
6478 const Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
6479 <const Powerpc_relobj
<size
, big_endian
>*>(cs
->first
.object_
);
6480 Address got_addr
= got_os_addr
+ ppcobj
->toc_base_offset();
6481 Address off
= plt_addr
- got_addr
;
6483 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
6484 this->plt_error(cs
->first
);
6488 write_insn
<big_endian
>(p
, addis_12_2
+ ha(off
));
6490 write_insn
<big_endian
>(p
, ld_12_12
+ l(off
));
6495 write_insn
<big_endian
>(p
, ld_12_2
+ l(off
));
6499 write_insn
<big_endian
>(p
, mtctr_12
);
6501 if (cs
->second
.r2save_
6502 && !cs
->second
.localentry0_
6503 && this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
6504 this->build_tls_opt_tail(p
);
6506 write_insn
<big_endian
>(p
, bctr
);
6509 else if (!this->plt_call_stubs_
.empty())
6511 // Write out plt call stubs for ELFv1.
6512 typename
Plt_stub_entries::const_iterator cs
;
6513 for (cs
= this->plt_call_stubs_
.begin();
6514 cs
!= this->plt_call_stubs_
.end();
6517 const Output_data_plt_powerpc
<size
, big_endian
>* plt
;
6518 Address pltoff
= this->plt_off(cs
, &plt
);
6519 Address plt_addr
= pltoff
+ plt
->address();
6520 const Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
6521 <const Powerpc_relobj
<size
, big_endian
>*>(cs
->first
.object_
);
6522 Address got_addr
= got_os_addr
+ ppcobj
->toc_base_offset();
6523 Address off
= plt_addr
- got_addr
;
6525 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0
6526 || cs
->second
.notoc_
)
6527 this->plt_error(cs
->first
);
6529 bool static_chain
= parameters
->options().plt_static_chain();
6530 bool thread_safe
= this->targ_
->plt_thread_safe();
6531 bool use_fake_dep
= false;
6532 Address cmp_branch_off
= 0;
6535 unsigned int pltindex
6536 = ((pltoff
- this->targ_
->first_plt_entry_offset())
6537 / this->targ_
->plt_entry_size());
6539 = (this->targ_
->glink_section()->pltresolve_size()
6541 if (pltindex
> 32768)
6542 glinkoff
+= (pltindex
- 32768) * 4;
6544 = this->targ_
->glink_section()->address() + glinkoff
;
6546 = (this->stub_address() + cs
->second
.off_
+ 20
6547 + 4 * cs
->second
.r2save_
6548 + 4 * (ha(off
) != 0)
6549 + 4 * (ha(off
+ 8 + 8 * static_chain
) != ha(off
))
6550 + 4 * static_chain
);
6551 cmp_branch_off
= to
- from
;
6552 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
6555 p
= oview
+ cs
->second
.off_
;
6556 if (this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
6558 bool save_lr
= cs
->second
.r2save_
&& !cs
->second
.localentry0_
;
6559 this->build_tls_opt_head(&p
, save_lr
);
6560 use_fake_dep
= thread_safe
;
6562 if (cs
->second
.r2save_
)
6564 write_insn
<big_endian
>(p
, std_2_1
+ this->targ_
->stk_toc());
6569 write_insn
<big_endian
>(p
, addis_11_2
+ ha(off
));
6571 write_insn
<big_endian
>(p
, ld_12_11
+ l(off
));
6573 if (ha(off
+ 8 + 8 * static_chain
) != ha(off
))
6575 write_insn
<big_endian
>(p
, addi_11_11
+ l(off
));
6579 write_insn
<big_endian
>(p
, mtctr_12
);
6583 write_insn
<big_endian
>(p
, xor_2_12_12
);
6585 write_insn
<big_endian
>(p
, add_11_11_2
);
6588 write_insn
<big_endian
>(p
, ld_2_11
+ l(off
+ 8));
6592 write_insn
<big_endian
>(p
, ld_11_11
+ l(off
+ 16));
6598 write_insn
<big_endian
>(p
, ld_12_2
+ l(off
));
6600 if (ha(off
+ 8 + 8 * static_chain
) != ha(off
))
6602 write_insn
<big_endian
>(p
, addi_2_2
+ l(off
));
6606 write_insn
<big_endian
>(p
, mtctr_12
);
6610 write_insn
<big_endian
>(p
, xor_11_12_12
);
6612 write_insn
<big_endian
>(p
, add_2_2_11
);
6617 write_insn
<big_endian
>(p
, ld_11_2
+ l(off
+ 16));
6620 write_insn
<big_endian
>(p
, ld_2_2
+ l(off
+ 8));
6623 if (cs
->second
.r2save_
6624 && !cs
->second
.localentry0_
6625 && this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
6626 this->build_tls_opt_tail(p
);
6627 else if (thread_safe
&& !use_fake_dep
)
6629 write_insn
<big_endian
>(p
, cmpldi_2_0
);
6631 write_insn
<big_endian
>(p
, bnectr_p4
);
6633 write_insn
<big_endian
>(p
, b
| (cmp_branch_off
& 0x3fffffc));
6636 write_insn
<big_endian
>(p
, bctr
);
6640 // Write out long branch stubs.
6641 typename
Branch_stub_entries::const_iterator bs
;
6642 for (bs
= this->long_branch_stubs_
.begin();
6643 bs
!= this->long_branch_stubs_
.end();
6646 if (bs
->second
.save_res_
)
6648 Address off
= this->plt_size_
+ bs
->second
.off_
;
6650 Address loc
= this->stub_address() + off
;
6651 Address delta
= bs
->first
.dest_
- loc
;
6652 if (!bs
->second
.notoc_
)
6653 delta
+= elfcpp::ppc64_decode_local_entry(bs
->second
.other_
);
6654 if (bs
->second
.notoc_
)
6656 unsigned char* startp
= p
;
6657 p
= build_notoc_offset
<big_endian
>(p
, off
, false);
6658 delta
-= p
- startp
;
6660 else if (delta
+ (1 << 25) >= 2 << 25)
6663 = this->targ_
->find_branch_lookup_table(bs
->first
.dest_
);
6664 gold_assert(brlt_addr
!= invalid_address
);
6665 brlt_addr
+= this->targ_
->brlt_section()->address();
6666 Address got_addr
= got_os_addr
+ bs
->first
.toc_base_off_
;
6667 Address brltoff
= brlt_addr
- got_addr
;
6668 if (ha(brltoff
) == 0)
6670 write_insn
<big_endian
>(p
, ld_12_2
+ l(brltoff
));
6675 write_insn
<big_endian
>(p
, addis_12_2
+ ha(brltoff
));
6677 write_insn
<big_endian
>(p
, ld_12_12
+ l(brltoff
));
6681 if (delta
+ (1 << 25) < 2 << 25)
6682 write_insn
<big_endian
>(p
, b
| (delta
& 0x3fffffc));
6685 write_insn
<big_endian
>(p
, mtctr_12
);
6687 write_insn
<big_endian
>(p
, bctr
);
6693 if (!this->plt_call_stubs_
.empty())
6695 // The address of _GLOBAL_OFFSET_TABLE_.
6696 Address g_o_t
= invalid_address
;
6698 // Write out plt call stubs.
6699 typename
Plt_stub_entries::const_iterator cs
;
6700 for (cs
= this->plt_call_stubs_
.begin();
6701 cs
!= this->plt_call_stubs_
.end();
6704 const Output_data_plt_powerpc
<size
, big_endian
>* plt
;
6705 Address plt_addr
= this->plt_off(cs
, &plt
);
6706 plt_addr
+= plt
->address();
6708 p
= oview
+ cs
->second
.off_
;
6709 if (this->targ_
->is_tls_get_addr_opt(cs
->first
.sym_
))
6710 this->build_tls_opt_head(&p
, false);
6711 if (parameters
->options().output_is_position_independent())
6714 const Powerpc_relobj
<size
, big_endian
>* ppcobj
6715 = (static_cast<const Powerpc_relobj
<size
, big_endian
>*>
6716 (cs
->first
.object_
));
6717 if (ppcobj
!= NULL
&& cs
->first
.addend_
>= 32768)
6719 unsigned int got2
= ppcobj
->got2_shndx();
6720 got_addr
= ppcobj
->get_output_section_offset(got2
);
6721 gold_assert(got_addr
!= invalid_address
);
6722 got_addr
+= (ppcobj
->output_section(got2
)->address()
6723 + cs
->first
.addend_
);
6727 if (g_o_t
== invalid_address
)
6729 const Output_data_got_powerpc
<size
, big_endian
>* got
6730 = this->targ_
->got_section();
6731 g_o_t
= got
->address() + got
->g_o_t();
6736 Address off
= plt_addr
- got_addr
;
6738 write_insn
<big_endian
>(p
, lwz_11_30
+ l(off
));
6741 write_insn
<big_endian
>(p
, addis_11_30
+ ha(off
));
6743 write_insn
<big_endian
>(p
, lwz_11_11
+ l(off
));
6748 write_insn
<big_endian
>(p
, lis_11
+ ha(plt_addr
));
6750 write_insn
<big_endian
>(p
, lwz_11_11
+ l(plt_addr
));
6753 write_insn
<big_endian
>(p
, mtctr_11
);
6755 write_insn
<big_endian
>(p
, bctr
);
6759 // Write out long branch stubs.
6760 typename
Branch_stub_entries::const_iterator bs
;
6761 for (bs
= this->long_branch_stubs_
.begin();
6762 bs
!= this->long_branch_stubs_
.end();
6765 if (bs
->second
.save_res_
)
6767 Address off
= this->plt_size_
+ bs
->second
.off_
;
6769 Address loc
= this->stub_address() + off
;
6770 Address delta
= bs
->first
.dest_
- loc
;
6771 if (delta
+ (1 << 25) < 2 << 25)
6772 write_insn
<big_endian
>(p
, b
| (delta
& 0x3fffffc));
6773 else if (!parameters
->options().output_is_position_independent())
6775 write_insn
<big_endian
>(p
, lis_12
+ ha(bs
->first
.dest_
));
6777 write_insn
<big_endian
>(p
, addi_12_12
+ l(bs
->first
.dest_
));
6782 write_insn
<big_endian
>(p
, mflr_0
);
6784 write_insn
<big_endian
>(p
, bcl_20_31
);
6786 write_insn
<big_endian
>(p
, mflr_12
);
6788 write_insn
<big_endian
>(p
, addis_12_12
+ ha(delta
));
6790 write_insn
<big_endian
>(p
, addi_12_12
+ l(delta
));
6792 write_insn
<big_endian
>(p
, mtlr_0
);
6795 write_insn
<big_endian
>(p
, mtctr_12
);
6797 write_insn
<big_endian
>(p
, bctr
);
6800 if (this->need_save_res_
)
6802 p
= oview
+ this->plt_size_
+ this->branch_size_
;
6803 memcpy (p
, this->targ_
->savres_section()->contents(),
6804 this->targ_
->savres_section()->data_size());
6808 // Write out .glink.
6810 template<int size
, bool big_endian
>
6812 Output_data_glink
<size
, big_endian
>::do_write(Output_file
* of
)
6814 const section_size_type off
= this->offset();
6815 const section_size_type oview_size
=
6816 convert_to_section_size_type(this->data_size());
6817 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
6820 // The base address of the .plt section.
6821 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
6822 Address plt_base
= this->targ_
->plt_section()->address();
6826 if (this->end_branch_table_
!= 0)
6828 // Write pltresolve stub.
6830 Address after_bcl
= this->address() + 16;
6831 Address pltoff
= plt_base
- after_bcl
;
6833 elfcpp::Swap
<64, big_endian
>::writeval(p
, pltoff
), p
+= 8;
6835 if (this->targ_
->abiversion() < 2)
6837 write_insn
<big_endian
>(p
, mflr_12
), p
+= 4;
6838 write_insn
<big_endian
>(p
, bcl_20_31
), p
+= 4;
6839 write_insn
<big_endian
>(p
, mflr_11
), p
+= 4;
6840 write_insn
<big_endian
>(p
, ld_2_11
+ l(-16)), p
+= 4;
6841 write_insn
<big_endian
>(p
, mtlr_12
), p
+= 4;
6842 write_insn
<big_endian
>(p
, add_11_2_11
), p
+= 4;
6843 write_insn
<big_endian
>(p
, ld_12_11
+ 0), p
+= 4;
6844 write_insn
<big_endian
>(p
, ld_2_11
+ 8), p
+= 4;
6845 write_insn
<big_endian
>(p
, mtctr_12
), p
+= 4;
6846 write_insn
<big_endian
>(p
, ld_11_11
+ 16), p
+= 4;
6850 if (this->targ_
->has_localentry0())
6852 write_insn
<big_endian
>(p
, std_2_1
+ 24), p
+= 4;
6854 write_insn
<big_endian
>(p
, mflr_0
), p
+= 4;
6855 write_insn
<big_endian
>(p
, bcl_20_31
), p
+= 4;
6856 write_insn
<big_endian
>(p
, mflr_11
), p
+= 4;
6857 write_insn
<big_endian
>(p
, mtlr_0
), p
+= 4;
6858 if (this->targ_
->has_localentry0())
6860 write_insn
<big_endian
>(p
, ld_0_11
+ l(-20)), p
+= 4;
6864 write_insn
<big_endian
>(p
, ld_0_11
+ l(-16)), p
+= 4;
6866 write_insn
<big_endian
>(p
, sub_12_12_11
), p
+= 4;
6867 write_insn
<big_endian
>(p
, add_11_0_11
), p
+= 4;
6868 write_insn
<big_endian
>(p
, addi_0_12
+ l(-44)), p
+= 4;
6869 write_insn
<big_endian
>(p
, ld_12_11
+ 0), p
+= 4;
6870 write_insn
<big_endian
>(p
, srdi_0_0_2
), p
+= 4;
6871 write_insn
<big_endian
>(p
, mtctr_12
), p
+= 4;
6872 write_insn
<big_endian
>(p
, ld_11_11
+ 8), p
+= 4;
6874 write_insn
<big_endian
>(p
, bctr
), p
+= 4;
6875 gold_assert(p
== oview
+ this->pltresolve_size());
6877 // Write lazy link call stubs.
6879 while (p
< oview
+ this->end_branch_table_
)
6881 if (this->targ_
->abiversion() < 2)
6885 write_insn
<big_endian
>(p
, li_0_0
+ indx
), p
+= 4;
6889 write_insn
<big_endian
>(p
, lis_0
+ hi(indx
)), p
+= 4;
6890 write_insn
<big_endian
>(p
, ori_0_0_0
+ l(indx
)), p
+= 4;
6893 uint32_t branch_off
= 8 - (p
- oview
);
6894 write_insn
<big_endian
>(p
, b
+ (branch_off
& 0x3fffffc)), p
+= 4;
6899 Address plt_base
= this->targ_
->plt_section()->address();
6900 Address iplt_base
= invalid_address
;
6901 unsigned int global_entry_off
= this->global_entry_off();
6902 Address global_entry_base
= this->address() + global_entry_off
;
6903 typename
Global_entry_stub_entries::const_iterator ge
;
6904 for (ge
= this->global_entry_stubs_
.begin();
6905 ge
!= this->global_entry_stubs_
.end();
6908 p
= oview
+ global_entry_off
+ ge
->second
;
6909 Address plt_addr
= ge
->first
->plt_offset();
6910 if (ge
->first
->type() == elfcpp::STT_GNU_IFUNC
6911 && ge
->first
->can_use_relative_reloc(false))
6913 if (iplt_base
== invalid_address
)
6914 iplt_base
= this->targ_
->iplt_section()->address();
6915 plt_addr
+= iplt_base
;
6918 plt_addr
+= plt_base
;
6919 Address my_addr
= global_entry_base
+ ge
->second
;
6920 Address off
= plt_addr
- my_addr
;
6922 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
6923 gold_error(_("linkage table error against `%s'"),
6924 ge
->first
->demangled_name().c_str());
6926 write_insn
<big_endian
>(p
, addis_12_12
+ ha(off
)), p
+= 4;
6927 write_insn
<big_endian
>(p
, ld_12_12
+ l(off
)), p
+= 4;
6928 write_insn
<big_endian
>(p
, mtctr_12
), p
+= 4;
6929 write_insn
<big_endian
>(p
, bctr
);
6934 const Output_data_got_powerpc
<size
, big_endian
>* got
6935 = this->targ_
->got_section();
6936 // The address of _GLOBAL_OFFSET_TABLE_.
6937 Address g_o_t
= got
->address() + got
->g_o_t();
6939 // Write out pltresolve branch table.
6941 unsigned int the_end
= oview_size
- this->pltresolve_size();
6942 unsigned char* end_p
= oview
+ the_end
;
6943 while (p
< end_p
- 8 * 4)
6944 write_insn
<big_endian
>(p
, b
+ end_p
- p
), p
+= 4;
6946 write_insn
<big_endian
>(p
, nop
), p
+= 4;
6948 // Write out pltresolve call stub.
6949 end_p
= oview
+ oview_size
;
6950 if (parameters
->options().output_is_position_independent())
6952 Address res0_off
= 0;
6953 Address after_bcl_off
= the_end
+ 12;
6954 Address bcl_res0
= after_bcl_off
- res0_off
;
6956 write_insn
<big_endian
>(p
, addis_11_11
+ ha(bcl_res0
));
6958 write_insn
<big_endian
>(p
, mflr_0
);
6960 write_insn
<big_endian
>(p
, bcl_20_31
);
6962 write_insn
<big_endian
>(p
, addi_11_11
+ l(bcl_res0
));
6964 write_insn
<big_endian
>(p
, mflr_12
);
6966 write_insn
<big_endian
>(p
, mtlr_0
);
6968 write_insn
<big_endian
>(p
, sub_11_11_12
);
6971 Address got_bcl
= g_o_t
+ 4 - (after_bcl_off
+ this->address());
6973 write_insn
<big_endian
>(p
, addis_12_12
+ ha(got_bcl
));
6975 if (ha(got_bcl
) == ha(got_bcl
+ 4))
6977 write_insn
<big_endian
>(p
, lwz_0_12
+ l(got_bcl
));
6979 write_insn
<big_endian
>(p
, lwz_12_12
+ l(got_bcl
+ 4));
6983 write_insn
<big_endian
>(p
, lwzu_0_12
+ l(got_bcl
));
6985 write_insn
<big_endian
>(p
, lwz_12_12
+ 4);
6988 write_insn
<big_endian
>(p
, mtctr_0
);
6990 write_insn
<big_endian
>(p
, add_0_11_11
);
6992 write_insn
<big_endian
>(p
, add_11_0_11
);
6996 Address res0
= this->address();
6998 write_insn
<big_endian
>(p
, lis_12
+ ha(g_o_t
+ 4));
7000 write_insn
<big_endian
>(p
, addis_11_11
+ ha(-res0
));
7002 if (ha(g_o_t
+ 4) == ha(g_o_t
+ 8))
7003 write_insn
<big_endian
>(p
, lwz_0_12
+ l(g_o_t
+ 4));
7005 write_insn
<big_endian
>(p
, lwzu_0_12
+ l(g_o_t
+ 4));
7007 write_insn
<big_endian
>(p
, addi_11_11
+ l(-res0
));
7009 write_insn
<big_endian
>(p
, mtctr_0
);
7011 write_insn
<big_endian
>(p
, add_0_11_11
);
7013 if (ha(g_o_t
+ 4) == ha(g_o_t
+ 8))
7014 write_insn
<big_endian
>(p
, lwz_12_12
+ l(g_o_t
+ 8));
7016 write_insn
<big_endian
>(p
, lwz_12_12
+ 4);
7018 write_insn
<big_endian
>(p
, add_11_0_11
);
7021 write_insn
<big_endian
>(p
, bctr
);
7025 write_insn
<big_endian
>(p
, nop
);
7030 of
->write_output_view(off
, oview_size
, oview
);
7034 // A class to handle linker generated save/restore functions.
7036 template<int size
, bool big_endian
>
7037 class Output_data_save_res
: public Output_section_data_build
7040 Output_data_save_res(Symbol_table
* symtab
);
7042 const unsigned char*
7049 // Write to a map file.
7051 do_print_to_mapfile(Mapfile
* mapfile
) const
7052 { mapfile
->print_output_data(this, _("** save/restore")); }
7055 do_write(Output_file
*);
7058 // The maximum size of save/restore contents.
7059 static const unsigned int savres_max
= 218*4;
7062 savres_define(Symbol_table
* symtab
,
7064 unsigned int lo
, unsigned int hi
,
7065 unsigned char* write_ent(unsigned char*, int),
7066 unsigned char* write_tail(unsigned char*, int));
7068 unsigned char *contents_
;
7071 template<bool big_endian
>
7072 static unsigned char*
7073 savegpr0(unsigned char* p
, int r
)
7075 uint32_t insn
= std_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
7076 write_insn
<big_endian
>(p
, insn
);
7080 template<bool big_endian
>
7081 static unsigned char*
7082 savegpr0_tail(unsigned char* p
, int r
)
7084 p
= savegpr0
<big_endian
>(p
, r
);
7085 uint32_t insn
= std_0_1
+ 16;
7086 write_insn
<big_endian
>(p
, insn
);
7088 write_insn
<big_endian
>(p
, blr
);
7092 template<bool big_endian
>
7093 static unsigned char*
7094 restgpr0(unsigned char* p
, int r
)
7096 uint32_t insn
= ld_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
7097 write_insn
<big_endian
>(p
, insn
);
7101 template<bool big_endian
>
7102 static unsigned char*
7103 restgpr0_tail(unsigned char* p
, int r
)
7105 uint32_t insn
= ld_0_1
+ 16;
7106 write_insn
<big_endian
>(p
, insn
);
7108 p
= restgpr0
<big_endian
>(p
, r
);
7109 write_insn
<big_endian
>(p
, mtlr_0
);
7113 p
= restgpr0
<big_endian
>(p
, 30);
7114 p
= restgpr0
<big_endian
>(p
, 31);
7116 write_insn
<big_endian
>(p
, blr
);
7120 template<bool big_endian
>
7121 static unsigned char*
7122 savegpr1(unsigned char* p
, int r
)
7124 uint32_t insn
= std_0_12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
7125 write_insn
<big_endian
>(p
, insn
);
7129 template<bool big_endian
>
7130 static unsigned char*
7131 savegpr1_tail(unsigned char* p
, int r
)
7133 p
= savegpr1
<big_endian
>(p
, r
);
7134 write_insn
<big_endian
>(p
, blr
);
7138 template<bool big_endian
>
7139 static unsigned char*
7140 restgpr1(unsigned char* p
, int r
)
7142 uint32_t insn
= ld_0_12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
7143 write_insn
<big_endian
>(p
, insn
);
7147 template<bool big_endian
>
7148 static unsigned char*
7149 restgpr1_tail(unsigned char* p
, int r
)
7151 p
= restgpr1
<big_endian
>(p
, r
);
7152 write_insn
<big_endian
>(p
, blr
);
7156 template<bool big_endian
>
7157 static unsigned char*
7158 savefpr(unsigned char* p
, int r
)
7160 uint32_t insn
= stfd_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
7161 write_insn
<big_endian
>(p
, insn
);
7165 template<bool big_endian
>
7166 static unsigned char*
7167 savefpr0_tail(unsigned char* p
, int r
)
7169 p
= savefpr
<big_endian
>(p
, r
);
7170 write_insn
<big_endian
>(p
, std_0_1
+ 16);
7172 write_insn
<big_endian
>(p
, blr
);
7176 template<bool big_endian
>
7177 static unsigned char*
7178 restfpr(unsigned char* p
, int r
)
7180 uint32_t insn
= lfd_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
7181 write_insn
<big_endian
>(p
, insn
);
7185 template<bool big_endian
>
7186 static unsigned char*
7187 restfpr0_tail(unsigned char* p
, int r
)
7189 write_insn
<big_endian
>(p
, ld_0_1
+ 16);
7191 p
= restfpr
<big_endian
>(p
, r
);
7192 write_insn
<big_endian
>(p
, mtlr_0
);
7196 p
= restfpr
<big_endian
>(p
, 30);
7197 p
= restfpr
<big_endian
>(p
, 31);
7199 write_insn
<big_endian
>(p
, blr
);
7203 template<bool big_endian
>
7204 static unsigned char*
7205 savefpr1_tail(unsigned char* p
, int r
)
7207 p
= savefpr
<big_endian
>(p
, r
);
7208 write_insn
<big_endian
>(p
, blr
);
7212 template<bool big_endian
>
7213 static unsigned char*
7214 restfpr1_tail(unsigned char* p
, int r
)
7216 p
= restfpr
<big_endian
>(p
, r
);
7217 write_insn
<big_endian
>(p
, blr
);
7221 template<bool big_endian
>
7222 static unsigned char*
7223 savevr(unsigned char* p
, int r
)
7225 uint32_t insn
= li_12_0
+ (1 << 16) - (32 - r
) * 16;
7226 write_insn
<big_endian
>(p
, insn
);
7228 insn
= stvx_0_12_0
+ (r
<< 21);
7229 write_insn
<big_endian
>(p
, insn
);
7233 template<bool big_endian
>
7234 static unsigned char*
7235 savevr_tail(unsigned char* p
, int r
)
7237 p
= savevr
<big_endian
>(p
, r
);
7238 write_insn
<big_endian
>(p
, blr
);
7242 template<bool big_endian
>
7243 static unsigned char*
7244 restvr(unsigned char* p
, int r
)
7246 uint32_t insn
= li_12_0
+ (1 << 16) - (32 - r
) * 16;
7247 write_insn
<big_endian
>(p
, insn
);
7249 insn
= lvx_0_12_0
+ (r
<< 21);
7250 write_insn
<big_endian
>(p
, insn
);
7254 template<bool big_endian
>
7255 static unsigned char*
7256 restvr_tail(unsigned char* p
, int r
)
7258 p
= restvr
<big_endian
>(p
, r
);
7259 write_insn
<big_endian
>(p
, blr
);
7264 template<int size
, bool big_endian
>
7265 Output_data_save_res
<size
, big_endian
>::Output_data_save_res(
7266 Symbol_table
* symtab
)
7267 : Output_section_data_build(4),
7270 this->savres_define(symtab
,
7271 "_savegpr0_", 14, 31,
7272 savegpr0
<big_endian
>, savegpr0_tail
<big_endian
>);
7273 this->savres_define(symtab
,
7274 "_restgpr0_", 14, 29,
7275 restgpr0
<big_endian
>, restgpr0_tail
<big_endian
>);
7276 this->savres_define(symtab
,
7277 "_restgpr0_", 30, 31,
7278 restgpr0
<big_endian
>, restgpr0_tail
<big_endian
>);
7279 this->savres_define(symtab
,
7280 "_savegpr1_", 14, 31,
7281 savegpr1
<big_endian
>, savegpr1_tail
<big_endian
>);
7282 this->savres_define(symtab
,
7283 "_restgpr1_", 14, 31,
7284 restgpr1
<big_endian
>, restgpr1_tail
<big_endian
>);
7285 this->savres_define(symtab
,
7286 "_savefpr_", 14, 31,
7287 savefpr
<big_endian
>, savefpr0_tail
<big_endian
>);
7288 this->savres_define(symtab
,
7289 "_restfpr_", 14, 29,
7290 restfpr
<big_endian
>, restfpr0_tail
<big_endian
>);
7291 this->savres_define(symtab
,
7292 "_restfpr_", 30, 31,
7293 restfpr
<big_endian
>, restfpr0_tail
<big_endian
>);
7294 this->savres_define(symtab
,
7296 savefpr
<big_endian
>, savefpr1_tail
<big_endian
>);
7297 this->savres_define(symtab
,
7299 restfpr
<big_endian
>, restfpr1_tail
<big_endian
>);
7300 this->savres_define(symtab
,
7302 savevr
<big_endian
>, savevr_tail
<big_endian
>);
7303 this->savres_define(symtab
,
7305 restvr
<big_endian
>, restvr_tail
<big_endian
>);
7308 template<int size
, bool big_endian
>
7310 Output_data_save_res
<size
, big_endian
>::savres_define(
7311 Symbol_table
* symtab
,
7313 unsigned int lo
, unsigned int hi
,
7314 unsigned char* write_ent(unsigned char*, int),
7315 unsigned char* write_tail(unsigned char*, int))
7317 size_t len
= strlen(name
);
7318 bool writing
= false;
7321 memcpy(sym
, name
, len
);
7324 for (unsigned int i
= lo
; i
<= hi
; i
++)
7326 sym
[len
+ 0] = i
/ 10 + '0';
7327 sym
[len
+ 1] = i
% 10 + '0';
7328 Symbol
* gsym
= symtab
->lookup(sym
);
7329 bool refd
= gsym
!= NULL
&& gsym
->is_undefined();
7330 writing
= writing
|| refd
;
7333 if (this->contents_
== NULL
)
7334 this->contents_
= new unsigned char[this->savres_max
];
7336 section_size_type value
= this->current_data_size();
7337 unsigned char* p
= this->contents_
+ value
;
7339 p
= write_ent(p
, i
);
7341 p
= write_tail(p
, i
);
7342 section_size_type cur_size
= p
- this->contents_
;
7343 this->set_current_data_size(cur_size
);
7345 symtab
->define_in_output_data(sym
, NULL
, Symbol_table::PREDEFINED
,
7346 this, value
, cur_size
- value
,
7347 elfcpp::STT_FUNC
, elfcpp::STB_GLOBAL
,
7348 elfcpp::STV_HIDDEN
, 0, false, false);
7353 // Write out save/restore.
7355 template<int size
, bool big_endian
>
7357 Output_data_save_res
<size
, big_endian
>::do_write(Output_file
* of
)
7359 const section_size_type off
= this->offset();
7360 const section_size_type oview_size
=
7361 convert_to_section_size_type(this->data_size());
7362 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
7363 memcpy(oview
, this->contents_
, oview_size
);
7364 of
->write_output_view(off
, oview_size
, oview
);
7368 // Create the glink section.
7370 template<int size
, bool big_endian
>
7372 Target_powerpc
<size
, big_endian
>::make_glink_section(Layout
* layout
)
7374 if (this->glink_
== NULL
)
7376 this->glink_
= new Output_data_glink
<size
, big_endian
>(this);
7377 this->glink_
->add_eh_frame(layout
);
7378 layout
->add_output_section_data(".text", elfcpp::SHT_PROGBITS
,
7379 elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
,
7380 this->glink_
, ORDER_TEXT
, false);
7384 // Create a PLT entry for a global symbol.
7386 template<int size
, bool big_endian
>
7388 Target_powerpc
<size
, big_endian
>::make_plt_entry(Symbol_table
* symtab
,
7392 if (gsym
->type() == elfcpp::STT_GNU_IFUNC
7393 && gsym
->can_use_relative_reloc(false))
7395 if (this->iplt_
== NULL
)
7396 this->make_iplt_section(symtab
, layout
);
7397 this->iplt_
->add_ifunc_entry(gsym
);
7401 if (this->plt_
== NULL
)
7402 this->make_plt_section(symtab
, layout
);
7403 this->plt_
->add_entry(gsym
);
7407 // Make a PLT entry for a local symbol.
7409 template<int size
, bool big_endian
>
7411 Target_powerpc
<size
, big_endian
>::make_local_plt_entry(
7413 Sized_relobj_file
<size
, big_endian
>* relobj
,
7416 if (this->lplt_
== NULL
)
7417 this->make_lplt_section(layout
);
7418 this->lplt_
->add_local_entry(relobj
, r_sym
);
7421 // Make a PLT entry for a local STT_GNU_IFUNC symbol.
7423 template<int size
, bool big_endian
>
7425 Target_powerpc
<size
, big_endian
>::make_local_ifunc_plt_entry(
7426 Symbol_table
* symtab
,
7428 Sized_relobj_file
<size
, big_endian
>* relobj
,
7431 if (this->iplt_
== NULL
)
7432 this->make_iplt_section(symtab
, layout
);
7433 this->iplt_
->add_local_ifunc_entry(relobj
, r_sym
);
7436 // Return the number of entries in the PLT.
7438 template<int size
, bool big_endian
>
7440 Target_powerpc
<size
, big_endian
>::plt_entry_count() const
7442 if (this->plt_
== NULL
)
7444 return this->plt_
->entry_count();
7447 // Create a GOT entry for local dynamic __tls_get_addr calls.
7449 template<int size
, bool big_endian
>
7451 Target_powerpc
<size
, big_endian
>::tlsld_got_offset(
7452 Symbol_table
* symtab
,
7454 Sized_relobj_file
<size
, big_endian
>* object
)
7456 if (this->tlsld_got_offset_
== -1U)
7458 gold_assert(symtab
!= NULL
&& layout
!= NULL
&& object
!= NULL
);
7459 Reloc_section
* rela_dyn
= this->rela_dyn_section(layout
);
7460 Output_data_got_powerpc
<size
, big_endian
>* got
7461 = this->got_section(symtab
, layout
);
7462 unsigned int got_offset
= got
->add_constant_pair(0, 0);
7463 rela_dyn
->add_local(object
, 0, elfcpp::R_POWERPC_DTPMOD
, got
,
7465 this->tlsld_got_offset_
= got_offset
;
7467 return this->tlsld_got_offset_
;
7470 // Get the Reference_flags for a particular relocation.
7472 template<int size
, bool big_endian
>
7474 Target_powerpc
<size
, big_endian
>::Scan::get_reference_flags(
7475 unsigned int r_type
,
7476 const Target_powerpc
* target
)
7482 case elfcpp::R_POWERPC_NONE
:
7483 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
7484 case elfcpp::R_POWERPC_GNU_VTENTRY
:
7485 case elfcpp::R_PPC64_TOC
:
7486 // No symbol reference.
7489 case elfcpp::R_PPC64_ADDR64
:
7490 case elfcpp::R_PPC64_UADDR64
:
7491 case elfcpp::R_POWERPC_ADDR32
:
7492 case elfcpp::R_POWERPC_UADDR32
:
7493 case elfcpp::R_POWERPC_ADDR16
:
7494 case elfcpp::R_POWERPC_UADDR16
:
7495 case elfcpp::R_POWERPC_ADDR16_LO
:
7496 case elfcpp::R_POWERPC_ADDR16_HI
:
7497 case elfcpp::R_POWERPC_ADDR16_HA
:
7498 case elfcpp::R_PPC64_ADDR16_HIGHER34
:
7499 case elfcpp::R_PPC64_ADDR16_HIGHERA34
:
7500 case elfcpp::R_PPC64_ADDR16_HIGHEST34
:
7501 case elfcpp::R_PPC64_ADDR16_HIGHESTA34
:
7502 case elfcpp::R_PPC64_D34
:
7503 case elfcpp::R_PPC64_D34_LO
:
7504 case elfcpp::R_PPC64_D34_HI30
:
7505 case elfcpp::R_PPC64_D34_HA30
:
7506 case elfcpp::R_PPC64_D28
:
7507 ref
= Symbol::ABSOLUTE_REF
;
7510 case elfcpp::R_POWERPC_ADDR24
:
7511 case elfcpp::R_POWERPC_ADDR14
:
7512 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
7513 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
7514 ref
= Symbol::FUNCTION_CALL
| Symbol::ABSOLUTE_REF
;
7517 case elfcpp::R_PPC64_REL64
:
7518 case elfcpp::R_POWERPC_REL32
:
7519 case elfcpp::R_PPC_LOCAL24PC
:
7520 case elfcpp::R_POWERPC_REL16
:
7521 case elfcpp::R_POWERPC_REL16_LO
:
7522 case elfcpp::R_POWERPC_REL16_HI
:
7523 case elfcpp::R_POWERPC_REL16_HA
:
7524 case elfcpp::R_PPC64_REL16_HIGH
:
7525 case elfcpp::R_PPC64_REL16_HIGHA
:
7526 case elfcpp::R_PPC64_REL16_HIGHER
:
7527 case elfcpp::R_PPC64_REL16_HIGHERA
:
7528 case elfcpp::R_PPC64_REL16_HIGHEST
:
7529 case elfcpp::R_PPC64_REL16_HIGHESTA
:
7530 case elfcpp::R_PPC64_PCREL34
:
7531 case elfcpp::R_PPC64_REL16_HIGHER34
:
7532 case elfcpp::R_PPC64_REL16_HIGHERA34
:
7533 case elfcpp::R_PPC64_REL16_HIGHEST34
:
7534 case elfcpp::R_PPC64_REL16_HIGHESTA34
:
7535 case elfcpp::R_PPC64_PCREL28
:
7536 ref
= Symbol::RELATIVE_REF
;
7539 case elfcpp::R_PPC64_REL24_NOTOC
:
7543 case elfcpp::R_POWERPC_REL24
:
7544 case elfcpp::R_PPC_PLTREL24
:
7545 case elfcpp::R_POWERPC_REL14
:
7546 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
7547 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
7548 ref
= Symbol::FUNCTION_CALL
| Symbol::RELATIVE_REF
;
7551 case elfcpp::R_POWERPC_GOT16
:
7552 case elfcpp::R_POWERPC_GOT16_LO
:
7553 case elfcpp::R_POWERPC_GOT16_HI
:
7554 case elfcpp::R_POWERPC_GOT16_HA
:
7555 case elfcpp::R_PPC64_GOT16_DS
:
7556 case elfcpp::R_PPC64_GOT16_LO_DS
:
7557 case elfcpp::R_PPC64_GOT_PCREL34
:
7558 case elfcpp::R_PPC64_TOC16
:
7559 case elfcpp::R_PPC64_TOC16_LO
:
7560 case elfcpp::R_PPC64_TOC16_HI
:
7561 case elfcpp::R_PPC64_TOC16_HA
:
7562 case elfcpp::R_PPC64_TOC16_DS
:
7563 case elfcpp::R_PPC64_TOC16_LO_DS
:
7564 case elfcpp::R_POWERPC_PLT16_LO
:
7565 case elfcpp::R_POWERPC_PLT16_HI
:
7566 case elfcpp::R_POWERPC_PLT16_HA
:
7567 case elfcpp::R_PPC64_PLT16_LO_DS
:
7568 case elfcpp::R_PPC64_PLT_PCREL34
:
7569 case elfcpp::R_PPC64_PLT_PCREL34_NOTOC
:
7570 ref
= Symbol::RELATIVE_REF
;
7573 case elfcpp::R_POWERPC_GOT_TPREL16
:
7574 case elfcpp::R_POWERPC_TLS
:
7575 case elfcpp::R_PPC64_TLSGD
:
7576 case elfcpp::R_PPC64_TLSLD
:
7577 case elfcpp::R_PPC64_TPREL34
:
7578 case elfcpp::R_PPC64_DTPREL34
:
7579 case elfcpp::R_PPC64_GOT_TLSGD_PCREL34
:
7580 case elfcpp::R_PPC64_GOT_TLSLD_PCREL34
:
7581 case elfcpp::R_PPC64_GOT_TPREL_PCREL34
:
7582 case elfcpp::R_PPC64_GOT_DTPREL_PCREL34
:
7583 ref
= Symbol::TLS_REF
;
7586 case elfcpp::R_POWERPC_COPY
:
7587 case elfcpp::R_POWERPC_GLOB_DAT
:
7588 case elfcpp::R_POWERPC_JMP_SLOT
:
7589 case elfcpp::R_POWERPC_RELATIVE
:
7590 case elfcpp::R_POWERPC_DTPMOD
:
7592 // Not expected. We will give an error later.
7596 if (size
== 64 && target
->abiversion() < 2)
7597 ref
|= Symbol::FUNC_DESC_ABI
;
7601 // Report an unsupported relocation against a local symbol.
7603 template<int size
, bool big_endian
>
7605 Target_powerpc
<size
, big_endian
>::Scan::unsupported_reloc_local(
7606 Sized_relobj_file
<size
, big_endian
>* object
,
7607 unsigned int r_type
)
7609 gold_error(_("%s: unsupported reloc %u against local symbol"),
7610 object
->name().c_str(), r_type
);
7613 // We are about to emit a dynamic relocation of type R_TYPE. If the
7614 // dynamic linker does not support it, issue an error.
7616 template<int size
, bool big_endian
>
7618 Target_powerpc
<size
, big_endian
>::Scan::check_non_pic(Relobj
* object
,
7619 unsigned int r_type
)
7621 gold_assert(r_type
!= elfcpp::R_POWERPC_NONE
);
7623 // These are the relocation types supported by glibc for both 32-bit
7624 // and 64-bit powerpc.
7627 case elfcpp::R_POWERPC_NONE
:
7628 case elfcpp::R_POWERPC_RELATIVE
:
7629 case elfcpp::R_POWERPC_GLOB_DAT
:
7630 case elfcpp::R_POWERPC_DTPMOD
:
7631 case elfcpp::R_POWERPC_DTPREL
:
7632 case elfcpp::R_POWERPC_TPREL
:
7633 case elfcpp::R_POWERPC_JMP_SLOT
:
7634 case elfcpp::R_POWERPC_COPY
:
7635 case elfcpp::R_POWERPC_IRELATIVE
:
7636 case elfcpp::R_POWERPC_ADDR32
:
7637 case elfcpp::R_POWERPC_UADDR32
:
7638 case elfcpp::R_POWERPC_ADDR24
:
7639 case elfcpp::R_POWERPC_ADDR16
:
7640 case elfcpp::R_POWERPC_UADDR16
:
7641 case elfcpp::R_POWERPC_ADDR16_LO
:
7642 case elfcpp::R_POWERPC_ADDR16_HI
:
7643 case elfcpp::R_POWERPC_ADDR16_HA
:
7644 case elfcpp::R_POWERPC_ADDR14
:
7645 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
7646 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
7647 case elfcpp::R_POWERPC_REL32
:
7648 case elfcpp::R_POWERPC_TPREL16
:
7649 case elfcpp::R_POWERPC_TPREL16_LO
:
7650 case elfcpp::R_POWERPC_TPREL16_HI
:
7651 case elfcpp::R_POWERPC_TPREL16_HA
:
7662 // These are the relocation types supported only on 64-bit.
7663 case elfcpp::R_PPC64_ADDR64
:
7664 case elfcpp::R_PPC64_UADDR64
:
7665 case elfcpp::R_PPC64_JMP_IREL
:
7666 case elfcpp::R_PPC64_ADDR16_DS
:
7667 case elfcpp::R_PPC64_ADDR16_LO_DS
:
7668 case elfcpp::R_PPC64_ADDR16_HIGH
:
7669 case elfcpp::R_PPC64_ADDR16_HIGHA
:
7670 case elfcpp::R_PPC64_ADDR16_HIGHER
:
7671 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
7672 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
7673 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
7674 case elfcpp::R_PPC64_REL64
:
7675 case elfcpp::R_POWERPC_ADDR30
:
7676 case elfcpp::R_PPC64_TPREL16_DS
:
7677 case elfcpp::R_PPC64_TPREL16_LO_DS
:
7678 case elfcpp::R_PPC64_TPREL16_HIGH
:
7679 case elfcpp::R_PPC64_TPREL16_HIGHA
:
7680 case elfcpp::R_PPC64_TPREL16_HIGHER
:
7681 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
7682 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
7683 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
7694 // These are the relocation types supported only on 32-bit.
7695 // ??? glibc ld.so doesn't need to support these.
7696 case elfcpp::R_POWERPC_REL24
:
7697 case elfcpp::R_POWERPC_DTPREL16
:
7698 case elfcpp::R_POWERPC_DTPREL16_LO
:
7699 case elfcpp::R_POWERPC_DTPREL16_HI
:
7700 case elfcpp::R_POWERPC_DTPREL16_HA
:
7708 // This prevents us from issuing more than one error per reloc
7709 // section. But we can still wind up issuing more than one
7710 // error per object file.
7711 if (this->issued_non_pic_error_
)
7713 gold_assert(parameters
->options().output_is_position_independent());
7714 object
->error(_("requires unsupported dynamic reloc; "
7715 "recompile with -fPIC"));
7716 this->issued_non_pic_error_
= true;
7720 // Return whether we need to make a PLT entry for a relocation of the
7721 // given type against a STT_GNU_IFUNC symbol.
7723 template<int size
, bool big_endian
>
7725 Target_powerpc
<size
, big_endian
>::Scan::reloc_needs_plt_for_ifunc(
7726 Target_powerpc
<size
, big_endian
>* target
,
7727 Sized_relobj_file
<size
, big_endian
>* object
,
7728 unsigned int r_type
,
7731 // In non-pic code any reference will resolve to the plt call stub
7732 // for the ifunc symbol.
7733 if ((size
== 32 || target
->abiversion() >= 2)
7734 && !parameters
->options().output_is_position_independent())
7739 // Word size refs from data sections are OK, but don't need a PLT entry.
7740 case elfcpp::R_POWERPC_ADDR32
:
7741 case elfcpp::R_POWERPC_UADDR32
:
7746 case elfcpp::R_PPC64_ADDR64
:
7747 case elfcpp::R_PPC64_UADDR64
:
7752 // GOT refs are good, but also don't need a PLT entry.
7753 case elfcpp::R_POWERPC_GOT16
:
7754 case elfcpp::R_POWERPC_GOT16_LO
:
7755 case elfcpp::R_POWERPC_GOT16_HI
:
7756 case elfcpp::R_POWERPC_GOT16_HA
:
7757 case elfcpp::R_PPC64_GOT16_DS
:
7758 case elfcpp::R_PPC64_GOT16_LO_DS
:
7759 case elfcpp::R_PPC64_GOT_PCREL34
:
7762 // PLT relocs are OK and need a PLT entry.
7763 case elfcpp::R_POWERPC_PLT16_LO
:
7764 case elfcpp::R_POWERPC_PLT16_HI
:
7765 case elfcpp::R_POWERPC_PLT16_HA
:
7766 case elfcpp::R_PPC64_PLT16_LO_DS
:
7767 case elfcpp::R_POWERPC_PLTSEQ
:
7768 case elfcpp::R_POWERPC_PLTCALL
:
7769 case elfcpp::R_PPC64_PLTSEQ_NOTOC
:
7770 case elfcpp::R_PPC64_PLTCALL_NOTOC
:
7771 case elfcpp::R_PPC64_PLT_PCREL34
:
7772 case elfcpp::R_PPC64_PLT_PCREL34_NOTOC
:
7776 // Function calls are good, and these do need a PLT entry.
7777 case elfcpp::R_PPC64_REL24_NOTOC
:
7781 case elfcpp::R_POWERPC_ADDR24
:
7782 case elfcpp::R_POWERPC_ADDR14
:
7783 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
7784 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
7785 case elfcpp::R_POWERPC_REL24
:
7786 case elfcpp::R_PPC_PLTREL24
:
7787 case elfcpp::R_POWERPC_REL14
:
7788 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
7789 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
7796 // Anything else is a problem.
7797 // If we are building a static executable, the libc startup function
7798 // responsible for applying indirect function relocations is going
7799 // to complain about the reloc type.
7800 // If we are building a dynamic executable, we will have a text
7801 // relocation. The dynamic loader will set the text segment
7802 // writable and non-executable to apply text relocations. So we'll
7803 // segfault when trying to run the indirection function to resolve
7806 gold_error(_("%s: unsupported reloc %u for IFUNC symbol"),
7807 object
->name().c_str(), r_type
);
7811 // Return TRUE iff INSN is one we expect on a _LO variety toc/got
7815 ok_lo_toc_insn(uint32_t insn
, unsigned int r_type
)
7817 return ((insn
& (0x3f << 26)) == 12u << 26 /* addic */
7818 || (insn
& (0x3f << 26)) == 14u << 26 /* addi */
7819 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
7820 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
7821 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
7822 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
7823 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
7824 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
7825 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
7826 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
7827 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
7828 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
7829 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
7830 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
7831 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
7832 || (insn
& (0x3f << 26)) == 56u << 26 /* lq,lfq */
7833 || ((insn
& (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */
7834 /* Exclude lfqu by testing reloc. If relocs are ever
7835 defined for the reduced D field in psq_lu then those
7836 will need testing too. */
7837 && r_type
!= elfcpp::R_PPC64_TOC16_LO
7838 && r_type
!= elfcpp::R_POWERPC_GOT16_LO
)
7839 || ((insn
& (0x3f << 26)) == 58u << 26 /* ld,lwa */
7841 || (insn
& (0x3f << 26)) == 60u << 26 /* stfq */
7842 || ((insn
& (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */
7843 /* Exclude stfqu. psq_stu as above for psq_lu. */
7844 && r_type
!= elfcpp::R_PPC64_TOC16_LO
7845 && r_type
!= elfcpp::R_POWERPC_GOT16_LO
)
7846 || ((insn
& (0x3f << 26)) == 62u << 26 /* std,stq */
7847 && (insn
& 1) == 0));
7850 // Scan a relocation for a local symbol.
7852 template<int size
, bool big_endian
>
7854 Target_powerpc
<size
, big_endian
>::Scan::local(
7855 Symbol_table
* symtab
,
7857 Target_powerpc
<size
, big_endian
>* target
,
7858 Sized_relobj_file
<size
, big_endian
>* object
,
7859 unsigned int data_shndx
,
7860 Output_section
* output_section
,
7861 const elfcpp::Rela
<size
, big_endian
>& reloc
,
7862 unsigned int r_type
,
7863 const elfcpp::Sym
<size
, big_endian
>& lsym
,
7866 this->maybe_skip_tls_get_addr_call(target
, r_type
, NULL
);
7868 if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
7869 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
7871 this->expect_tls_get_addr_call();
7872 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(true);
7873 if (tls_type
!= tls::TLSOPT_NONE
)
7874 this->skip_next_tls_get_addr_call();
7876 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
7877 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
7879 this->expect_tls_get_addr_call();
7880 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
7881 if (tls_type
!= tls::TLSOPT_NONE
)
7882 this->skip_next_tls_get_addr_call();
7885 Powerpc_relobj
<size
, big_endian
>* ppc_object
7886 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
7891 && data_shndx
== ppc_object
->opd_shndx()
7892 && r_type
== elfcpp::R_PPC64_ADDR64
)
7893 ppc_object
->set_opd_discard(reloc
.get_r_offset());
7897 // A local STT_GNU_IFUNC symbol may require a PLT entry.
7898 bool is_ifunc
= lsym
.get_st_type() == elfcpp::STT_GNU_IFUNC
;
7899 if (is_ifunc
&& this->reloc_needs_plt_for_ifunc(target
, object
, r_type
, true))
7901 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
7902 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
7903 r_type
, r_sym
, reloc
.get_r_addend());
7904 target
->make_local_ifunc_plt_entry(symtab
, layout
, object
, r_sym
);
7909 case elfcpp::R_POWERPC_NONE
:
7910 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
7911 case elfcpp::R_POWERPC_GNU_VTENTRY
:
7912 case elfcpp::R_POWERPC_TLS
:
7913 case elfcpp::R_PPC64_ENTRY
:
7914 case elfcpp::R_POWERPC_PLTSEQ
:
7915 case elfcpp::R_POWERPC_PLTCALL
:
7916 case elfcpp::R_PPC64_PLTSEQ_NOTOC
:
7917 case elfcpp::R_PPC64_PLTCALL_NOTOC
:
7918 case elfcpp::R_PPC64_PCREL_OPT
:
7919 case elfcpp::R_PPC64_ADDR16_HIGHER34
:
7920 case elfcpp::R_PPC64_ADDR16_HIGHERA34
:
7921 case elfcpp::R_PPC64_ADDR16_HIGHEST34
:
7922 case elfcpp::R_PPC64_ADDR16_HIGHESTA34
:
7923 case elfcpp::R_PPC64_REL16_HIGHER34
:
7924 case elfcpp::R_PPC64_REL16_HIGHERA34
:
7925 case elfcpp::R_PPC64_REL16_HIGHEST34
:
7926 case elfcpp::R_PPC64_REL16_HIGHESTA34
:
7927 case elfcpp::R_PPC64_D34
:
7928 case elfcpp::R_PPC64_D34_LO
:
7929 case elfcpp::R_PPC64_D34_HI30
:
7930 case elfcpp::R_PPC64_D34_HA30
:
7931 case elfcpp::R_PPC64_D28
:
7932 case elfcpp::R_PPC64_PCREL34
:
7933 case elfcpp::R_PPC64_PCREL28
:
7934 case elfcpp::R_PPC64_TPREL34
:
7935 case elfcpp::R_PPC64_DTPREL34
:
7938 case elfcpp::R_PPC64_TOC
:
7940 Output_data_got_powerpc
<size
, big_endian
>* got
7941 = target
->got_section(symtab
, layout
);
7942 if (parameters
->options().output_is_position_independent())
7944 Address off
= reloc
.get_r_offset();
7946 && target
->abiversion() < 2
7947 && data_shndx
== ppc_object
->opd_shndx()
7948 && ppc_object
->get_opd_discard(off
- 8))
7951 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
7952 Powerpc_relobj
<size
, big_endian
>* symobj
= ppc_object
;
7953 rela_dyn
->add_output_section_relative(got
->output_section(),
7954 elfcpp::R_POWERPC_RELATIVE
,
7956 object
, data_shndx
, off
,
7957 symobj
->toc_base_offset());
7962 case elfcpp::R_PPC64_ADDR64
:
7963 case elfcpp::R_PPC64_UADDR64
:
7964 case elfcpp::R_POWERPC_ADDR32
:
7965 case elfcpp::R_POWERPC_UADDR32
:
7966 case elfcpp::R_POWERPC_ADDR24
:
7967 case elfcpp::R_POWERPC_ADDR16
:
7968 case elfcpp::R_POWERPC_ADDR16_LO
:
7969 case elfcpp::R_POWERPC_ADDR16_HI
:
7970 case elfcpp::R_POWERPC_ADDR16_HA
:
7971 case elfcpp::R_POWERPC_UADDR16
:
7972 case elfcpp::R_PPC64_ADDR16_HIGH
:
7973 case elfcpp::R_PPC64_ADDR16_HIGHA
:
7974 case elfcpp::R_PPC64_ADDR16_HIGHER
:
7975 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
7976 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
7977 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
7978 case elfcpp::R_PPC64_ADDR16_DS
:
7979 case elfcpp::R_PPC64_ADDR16_LO_DS
:
7980 case elfcpp::R_POWERPC_ADDR14
:
7981 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
7982 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
7983 // If building a shared library (or a position-independent
7984 // executable), we need to create a dynamic relocation for
7986 if (parameters
->options().output_is_position_independent()
7987 || (size
== 64 && is_ifunc
&& target
->abiversion() < 2))
7989 Reloc_section
* rela_dyn
= target
->rela_dyn_section(symtab
, layout
,
7991 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
7992 if ((size
== 32 && r_type
== elfcpp::R_POWERPC_ADDR32
)
7993 || (size
== 64 && r_type
== elfcpp::R_PPC64_ADDR64
))
7995 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
7996 : elfcpp::R_POWERPC_RELATIVE
);
7997 rela_dyn
->add_local_relative(object
, r_sym
, dynrel
,
7998 output_section
, data_shndx
,
7999 reloc
.get_r_offset(),
8000 reloc
.get_r_addend(), false);
8002 else if (lsym
.get_st_type() != elfcpp::STT_SECTION
)
8004 check_non_pic(object
, r_type
);
8005 rela_dyn
->add_local(object
, r_sym
, r_type
, output_section
,
8006 data_shndx
, reloc
.get_r_offset(),
8007 reloc
.get_r_addend());
8011 gold_assert(lsym
.get_st_value() == 0);
8012 unsigned int shndx
= lsym
.get_st_shndx();
8014 shndx
= object
->adjust_sym_shndx(r_sym
, shndx
,
8017 object
->error(_("section symbol %u has bad shndx %u"),
8020 rela_dyn
->add_local_section(object
, shndx
, r_type
,
8021 output_section
, data_shndx
,
8022 reloc
.get_r_offset());
8027 case elfcpp::R_PPC64_PLT_PCREL34
:
8028 case elfcpp::R_PPC64_PLT_PCREL34_NOTOC
:
8029 case elfcpp::R_POWERPC_PLT16_LO
:
8030 case elfcpp::R_POWERPC_PLT16_HI
:
8031 case elfcpp::R_POWERPC_PLT16_HA
:
8032 case elfcpp::R_PPC64_PLT16_LO_DS
:
8035 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8036 target
->make_local_plt_entry(layout
, object
, r_sym
);
8040 case elfcpp::R_PPC64_REL24_NOTOC
:
8044 case elfcpp::R_POWERPC_REL24
:
8045 case elfcpp::R_PPC_PLTREL24
:
8046 case elfcpp::R_PPC_LOCAL24PC
:
8047 case elfcpp::R_POWERPC_REL14
:
8048 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
8049 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
8052 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8053 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
8054 r_type
, r_sym
, reloc
.get_r_addend());
8058 case elfcpp::R_PPC64_TOCSAVE
:
8059 // R_PPC64_TOCSAVE follows a call instruction to indicate the
8060 // caller has already saved r2 and thus a plt call stub need not
8063 && target
->mark_pltcall(ppc_object
, data_shndx
,
8064 reloc
.get_r_offset() - 4, symtab
))
8066 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8067 unsigned int shndx
= lsym
.get_st_shndx();
8069 shndx
= object
->adjust_sym_shndx(r_sym
, shndx
, &is_ordinary
);
8071 object
->error(_("tocsave symbol %u has bad shndx %u"),
8074 target
->add_tocsave(ppc_object
, shndx
,
8075 lsym
.get_st_value() + reloc
.get_r_addend());
8079 case elfcpp::R_PPC64_REL64
:
8080 case elfcpp::R_POWERPC_REL32
:
8081 case elfcpp::R_POWERPC_REL16
:
8082 case elfcpp::R_POWERPC_REL16_LO
:
8083 case elfcpp::R_POWERPC_REL16_HI
:
8084 case elfcpp::R_POWERPC_REL16_HA
:
8085 case elfcpp::R_POWERPC_REL16DX_HA
:
8086 case elfcpp::R_PPC64_REL16_HIGH
:
8087 case elfcpp::R_PPC64_REL16_HIGHA
:
8088 case elfcpp::R_PPC64_REL16_HIGHER
:
8089 case elfcpp::R_PPC64_REL16_HIGHERA
:
8090 case elfcpp::R_PPC64_REL16_HIGHEST
:
8091 case elfcpp::R_PPC64_REL16_HIGHESTA
:
8092 case elfcpp::R_POWERPC_SECTOFF
:
8093 case elfcpp::R_POWERPC_SECTOFF_LO
:
8094 case elfcpp::R_POWERPC_SECTOFF_HI
:
8095 case elfcpp::R_POWERPC_SECTOFF_HA
:
8096 case elfcpp::R_PPC64_SECTOFF_DS
:
8097 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
8098 case elfcpp::R_POWERPC_TPREL16
:
8099 case elfcpp::R_POWERPC_TPREL16_LO
:
8100 case elfcpp::R_POWERPC_TPREL16_HI
:
8101 case elfcpp::R_POWERPC_TPREL16_HA
:
8102 case elfcpp::R_PPC64_TPREL16_DS
:
8103 case elfcpp::R_PPC64_TPREL16_LO_DS
:
8104 case elfcpp::R_PPC64_TPREL16_HIGH
:
8105 case elfcpp::R_PPC64_TPREL16_HIGHA
:
8106 case elfcpp::R_PPC64_TPREL16_HIGHER
:
8107 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
8108 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
8109 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
8110 case elfcpp::R_POWERPC_DTPREL16
:
8111 case elfcpp::R_POWERPC_DTPREL16_LO
:
8112 case elfcpp::R_POWERPC_DTPREL16_HI
:
8113 case elfcpp::R_POWERPC_DTPREL16_HA
:
8114 case elfcpp::R_PPC64_DTPREL16_DS
:
8115 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
8116 case elfcpp::R_PPC64_DTPREL16_HIGH
:
8117 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
8118 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
8119 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
8120 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
8121 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
8122 case elfcpp::R_PPC64_TLSGD
:
8123 case elfcpp::R_PPC64_TLSLD
:
8124 case elfcpp::R_PPC64_ADDR64_LOCAL
:
8127 case elfcpp::R_PPC64_GOT_PCREL34
:
8128 case elfcpp::R_POWERPC_GOT16
:
8129 case elfcpp::R_POWERPC_GOT16_LO
:
8130 case elfcpp::R_POWERPC_GOT16_HI
:
8131 case elfcpp::R_POWERPC_GOT16_HA
:
8132 case elfcpp::R_PPC64_GOT16_DS
:
8133 case elfcpp::R_PPC64_GOT16_LO_DS
:
8135 // The symbol requires a GOT entry.
8136 Output_data_got_powerpc
<size
, big_endian
>* got
8137 = target
->got_section(symtab
, layout
);
8138 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8140 if (!parameters
->options().output_is_position_independent())
8143 && (size
== 32 || target
->abiversion() >= 2))
8144 got
->add_local_plt(object
, r_sym
, GOT_TYPE_STANDARD
);
8146 got
->add_local(object
, r_sym
, GOT_TYPE_STANDARD
);
8148 else if (!object
->local_has_got_offset(r_sym
, GOT_TYPE_STANDARD
))
8150 // If we are generating a shared object or a pie, this
8151 // symbol's GOT entry will be set by a dynamic relocation.
8153 off
= got
->add_constant(0);
8154 object
->set_local_got_offset(r_sym
, GOT_TYPE_STANDARD
, off
);
8156 Reloc_section
* rela_dyn
= target
->rela_dyn_section(symtab
, layout
,
8158 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
8159 : elfcpp::R_POWERPC_RELATIVE
);
8160 rela_dyn
->add_local_relative(object
, r_sym
, dynrel
,
8161 got
, off
, 0, false);
8166 case elfcpp::R_PPC64_TOC16
:
8167 case elfcpp::R_PPC64_TOC16_LO
:
8168 case elfcpp::R_PPC64_TOC16_HI
:
8169 case elfcpp::R_PPC64_TOC16_HA
:
8170 case elfcpp::R_PPC64_TOC16_DS
:
8171 case elfcpp::R_PPC64_TOC16_LO_DS
:
8172 // We need a GOT section.
8173 target
->got_section(symtab
, layout
);
8176 case elfcpp::R_PPC64_GOT_TLSGD_PCREL34
:
8177 case elfcpp::R_POWERPC_GOT_TLSGD16
:
8178 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
8179 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
8180 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
8182 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(true);
8183 if (tls_type
== tls::TLSOPT_NONE
)
8185 Output_data_got_powerpc
<size
, big_endian
>* got
8186 = target
->got_section(symtab
, layout
);
8187 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8188 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
8189 got
->add_local_tls_pair(object
, r_sym
, GOT_TYPE_TLSGD
,
8190 rela_dyn
, elfcpp::R_POWERPC_DTPMOD
);
8192 else if (tls_type
== tls::TLSOPT_TO_LE
)
8194 // no GOT relocs needed for Local Exec.
8201 case elfcpp::R_PPC64_GOT_TLSLD_PCREL34
:
8202 case elfcpp::R_POWERPC_GOT_TLSLD16
:
8203 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
8204 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
8205 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
8207 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
8208 if (tls_type
== tls::TLSOPT_NONE
)
8209 target
->tlsld_got_offset(symtab
, layout
, object
);
8210 else if (tls_type
== tls::TLSOPT_TO_LE
)
8212 // no GOT relocs needed for Local Exec.
8213 if (parameters
->options().emit_relocs())
8215 Output_section
* os
= layout
->tls_segment()->first_section();
8216 gold_assert(os
!= NULL
);
8217 os
->set_needs_symtab_index();
8225 case elfcpp::R_PPC64_GOT_DTPREL_PCREL34
:
8226 case elfcpp::R_POWERPC_GOT_DTPREL16
:
8227 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
8228 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
8229 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
8231 Output_data_got_powerpc
<size
, big_endian
>* got
8232 = target
->got_section(symtab
, layout
);
8233 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8234 got
->add_local_tls(object
, r_sym
, GOT_TYPE_DTPREL
);
8238 case elfcpp::R_PPC64_GOT_TPREL_PCREL34
:
8239 case elfcpp::R_POWERPC_GOT_TPREL16
:
8240 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
8241 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
8242 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
8244 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(true);
8245 if (tls_type
== tls::TLSOPT_NONE
)
8247 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8248 if (!object
->local_has_got_offset(r_sym
, GOT_TYPE_TPREL
))
8250 Output_data_got_powerpc
<size
, big_endian
>* got
8251 = target
->got_section(symtab
, layout
);
8252 unsigned int off
= got
->add_constant(0);
8253 object
->set_local_got_offset(r_sym
, GOT_TYPE_TPREL
, off
);
8255 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
8256 rela_dyn
->add_symbolless_local_addend(object
, r_sym
,
8257 elfcpp::R_POWERPC_TPREL
,
8261 else if (tls_type
== tls::TLSOPT_TO_LE
)
8263 // no GOT relocs needed for Local Exec.
8271 unsupported_reloc_local(object
, r_type
);
8276 && parameters
->options().toc_optimize())
8278 if (data_shndx
== ppc_object
->toc_shndx())
8281 if (r_type
!= elfcpp::R_PPC64_ADDR64
8282 || (is_ifunc
&& target
->abiversion() < 2))
8284 else if (parameters
->options().output_is_position_independent())
8290 unsigned int shndx
= lsym
.get_st_shndx();
8291 if (shndx
>= elfcpp::SHN_LORESERVE
8292 && shndx
!= elfcpp::SHN_XINDEX
)
8297 ppc_object
->set_no_toc_opt(reloc
.get_r_offset());
8300 enum {no_check
, check_lo
, check_ha
} insn_check
;
8304 insn_check
= no_check
;
8307 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
8308 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
8309 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
8310 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
8311 case elfcpp::R_POWERPC_GOT16_HA
:
8312 case elfcpp::R_PPC64_TOC16_HA
:
8313 insn_check
= check_ha
;
8316 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
8317 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
8318 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
8319 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
8320 case elfcpp::R_POWERPC_GOT16_LO
:
8321 case elfcpp::R_PPC64_GOT16_LO_DS
:
8322 case elfcpp::R_PPC64_TOC16_LO
:
8323 case elfcpp::R_PPC64_TOC16_LO_DS
:
8324 insn_check
= check_lo
;
8328 section_size_type slen
;
8329 const unsigned char* view
= NULL
;
8330 if (insn_check
!= no_check
)
8332 view
= ppc_object
->section_contents(data_shndx
, &slen
, false);
8333 section_size_type off
=
8334 convert_to_section_size_type(reloc
.get_r_offset()) & -4;
8337 uint32_t insn
= elfcpp::Swap
<32, big_endian
>::readval(view
+ off
);
8338 if (insn_check
== check_lo
8339 ? !ok_lo_toc_insn(insn
, r_type
)
8340 : ((insn
& ((0x3f << 26) | 0x1f << 16))
8341 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8343 ppc_object
->set_no_toc_opt();
8344 gold_warning(_("%s: toc optimization is not supported "
8345 "for %#08x instruction"),
8346 ppc_object
->name().c_str(), insn
);
8355 case elfcpp::R_PPC64_TOC16
:
8356 case elfcpp::R_PPC64_TOC16_LO
:
8357 case elfcpp::R_PPC64_TOC16_HI
:
8358 case elfcpp::R_PPC64_TOC16_HA
:
8359 case elfcpp::R_PPC64_TOC16_DS
:
8360 case elfcpp::R_PPC64_TOC16_LO_DS
:
8361 unsigned int shndx
= lsym
.get_st_shndx();
8362 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8364 shndx
= ppc_object
->adjust_sym_shndx(r_sym
, shndx
, &is_ordinary
);
8365 if (is_ordinary
&& shndx
== ppc_object
->toc_shndx())
8367 Address dst_off
= lsym
.get_st_value() + reloc
.get_r_addend();
8368 if (dst_off
< ppc_object
->section_size(shndx
))
8371 if (r_type
== elfcpp::R_PPC64_TOC16_HA
)
8373 else if (r_type
== elfcpp::R_PPC64_TOC16_LO_DS
)
8375 // Need to check that the insn is a ld
8377 view
= ppc_object
->section_contents(data_shndx
,
8380 section_size_type off
=
8381 (convert_to_section_size_type(reloc
.get_r_offset())
8382 + (big_endian
? -2 : 3));
8384 && (view
[off
] & (0x3f << 2)) == 58u << 2)
8388 ppc_object
->set_no_toc_opt(dst_off
);
8399 case elfcpp::R_POWERPC_REL32
:
8400 if (ppc_object
->got2_shndx() != 0
8401 && parameters
->options().output_is_position_independent())
8403 unsigned int shndx
= lsym
.get_st_shndx();
8404 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8406 shndx
= ppc_object
->adjust_sym_shndx(r_sym
, shndx
, &is_ordinary
);
8407 if (is_ordinary
&& shndx
== ppc_object
->got2_shndx()
8408 && (ppc_object
->section_flags(data_shndx
)
8409 & elfcpp::SHF_EXECINSTR
) != 0)
8410 gold_error(_("%s: unsupported -mbss-plt code"),
8411 ppc_object
->name().c_str());
8421 case elfcpp::R_POWERPC_GOT_TLSLD16
:
8422 case elfcpp::R_POWERPC_GOT_TLSGD16
:
8423 case elfcpp::R_POWERPC_GOT_TPREL16
:
8424 case elfcpp::R_POWERPC_GOT_DTPREL16
:
8425 case elfcpp::R_POWERPC_GOT16
:
8426 case elfcpp::R_PPC64_GOT16_DS
:
8427 case elfcpp::R_PPC64_TOC16
:
8428 case elfcpp::R_PPC64_TOC16_DS
:
8429 ppc_object
->set_has_small_toc_reloc();
8437 case elfcpp::R_PPC64_TPREL16_DS
:
8438 case elfcpp::R_PPC64_TPREL16_LO_DS
:
8439 case elfcpp::R_PPC64_TPREL16_HIGH
:
8440 case elfcpp::R_PPC64_TPREL16_HIGHA
:
8441 case elfcpp::R_PPC64_TPREL16_HIGHER
:
8442 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
8443 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
8444 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
8445 case elfcpp::R_PPC64_TPREL34
:
8449 case elfcpp::R_POWERPC_TPREL16
:
8450 case elfcpp::R_POWERPC_TPREL16_LO
:
8451 case elfcpp::R_POWERPC_TPREL16_HI
:
8452 case elfcpp::R_POWERPC_TPREL16_HA
:
8453 layout
->set_has_static_tls();
8461 case elfcpp::R_POWERPC_TPREL16_HA
:
8462 if (target
->tprel_opt())
8464 section_size_type slen
;
8465 const unsigned char* view
= NULL
;
8466 view
= ppc_object
->section_contents(data_shndx
, &slen
, false);
8467 section_size_type off
8468 = convert_to_section_size_type(reloc
.get_r_offset()) & -4;
8471 uint32_t insn
= elfcpp::Swap
<32, big_endian
>::readval(view
+ off
);
8472 if ((insn
& ((0x3fu
<< 26) | 0x1f << 16))
8473 != ((15u << 26) | ((size
== 32 ? 2 : 13) << 16)))
8474 target
->set_tprel_opt(false);
8479 case elfcpp::R_PPC64_TPREL16_HIGH
:
8480 case elfcpp::R_PPC64_TPREL16_HIGHA
:
8481 case elfcpp::R_PPC64_TPREL16_HIGHER
:
8482 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
8483 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
8484 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
8488 case elfcpp::R_POWERPC_TPREL16_HI
:
8489 target
->set_tprel_opt(false);
8497 case elfcpp::R_PPC64_D34
:
8498 case elfcpp::R_PPC64_D34_LO
:
8499 case elfcpp::R_PPC64_D34_HI30
:
8500 case elfcpp::R_PPC64_D34_HA30
:
8501 case elfcpp::R_PPC64_D28
:
8502 case elfcpp::R_PPC64_PCREL34
:
8503 case elfcpp::R_PPC64_PCREL28
:
8504 case elfcpp::R_PPC64_TPREL34
:
8505 case elfcpp::R_PPC64_DTPREL34
:
8506 case elfcpp::R_PPC64_PLT_PCREL34
:
8507 case elfcpp::R_PPC64_PLT_PCREL34_NOTOC
:
8508 case elfcpp::R_PPC64_GOT_PCREL34
:
8509 case elfcpp::R_PPC64_GOT_TLSGD_PCREL34
:
8510 case elfcpp::R_PPC64_GOT_TLSLD_PCREL34
:
8511 case elfcpp::R_PPC64_GOT_DTPREL_PCREL34
:
8512 case elfcpp::R_PPC64_GOT_TPREL_PCREL34
:
8513 target
->set_power10_relocs();
8520 // Report an unsupported relocation against a global symbol.
8522 template<int size
, bool big_endian
>
8524 Target_powerpc
<size
, big_endian
>::Scan::unsupported_reloc_global(
8525 Sized_relobj_file
<size
, big_endian
>* object
,
8526 unsigned int r_type
,
8529 gold_error(_("%s: unsupported reloc %u against global symbol %s"),
8530 object
->name().c_str(), r_type
, gsym
->demangled_name().c_str());
8533 // Scan a relocation for a global symbol.
8535 template<int size
, bool big_endian
>
8537 Target_powerpc
<size
, big_endian
>::Scan::global(
8538 Symbol_table
* symtab
,
8540 Target_powerpc
<size
, big_endian
>* target
,
8541 Sized_relobj_file
<size
, big_endian
>* object
,
8542 unsigned int data_shndx
,
8543 Output_section
* output_section
,
8544 const elfcpp::Rela
<size
, big_endian
>& reloc
,
8545 unsigned int r_type
,
8548 if (this->maybe_skip_tls_get_addr_call(target
, r_type
, gsym
)
8552 if (target
->replace_tls_get_addr(gsym
))
8553 // Change a __tls_get_addr reference to __tls_get_addr_opt
8554 // so dynamic relocs are emitted against the latter symbol.
8555 gsym
= target
->tls_get_addr_opt();
8557 if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
8558 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
8560 this->expect_tls_get_addr_call();
8561 const bool final
= gsym
->final_value_is_known();
8562 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
8563 if (tls_type
!= tls::TLSOPT_NONE
)
8564 this->skip_next_tls_get_addr_call();
8566 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
8567 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
8569 this->expect_tls_get_addr_call();
8570 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
8571 if (tls_type
!= tls::TLSOPT_NONE
)
8572 this->skip_next_tls_get_addr_call();
8575 Powerpc_relobj
<size
, big_endian
>* ppc_object
8576 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
8578 // A STT_GNU_IFUNC symbol may require a PLT entry.
8579 bool is_ifunc
= gsym
->type() == elfcpp::STT_GNU_IFUNC
;
8580 bool pushed_ifunc
= false;
8581 if (is_ifunc
&& this->reloc_needs_plt_for_ifunc(target
, object
, r_type
, true))
8583 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8584 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
8585 r_type
, r_sym
, reloc
.get_r_addend());
8586 target
->make_plt_entry(symtab
, layout
, gsym
);
8587 pushed_ifunc
= true;
8592 case elfcpp::R_POWERPC_NONE
:
8593 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
8594 case elfcpp::R_POWERPC_GNU_VTENTRY
:
8595 case elfcpp::R_PPC_LOCAL24PC
:
8596 case elfcpp::R_POWERPC_TLS
:
8597 case elfcpp::R_PPC64_ENTRY
:
8598 case elfcpp::R_POWERPC_PLTSEQ
:
8599 case elfcpp::R_POWERPC_PLTCALL
:
8600 case elfcpp::R_PPC64_PLTSEQ_NOTOC
:
8601 case elfcpp::R_PPC64_PLTCALL_NOTOC
:
8602 case elfcpp::R_PPC64_PCREL_OPT
:
8603 case elfcpp::R_PPC64_ADDR16_HIGHER34
:
8604 case elfcpp::R_PPC64_ADDR16_HIGHERA34
:
8605 case elfcpp::R_PPC64_ADDR16_HIGHEST34
:
8606 case elfcpp::R_PPC64_ADDR16_HIGHESTA34
:
8607 case elfcpp::R_PPC64_REL16_HIGHER34
:
8608 case elfcpp::R_PPC64_REL16_HIGHERA34
:
8609 case elfcpp::R_PPC64_REL16_HIGHEST34
:
8610 case elfcpp::R_PPC64_REL16_HIGHESTA34
:
8611 case elfcpp::R_PPC64_D34
:
8612 case elfcpp::R_PPC64_D34_LO
:
8613 case elfcpp::R_PPC64_D34_HI30
:
8614 case elfcpp::R_PPC64_D34_HA30
:
8615 case elfcpp::R_PPC64_D28
:
8616 case elfcpp::R_PPC64_PCREL34
:
8617 case elfcpp::R_PPC64_PCREL28
:
8618 case elfcpp::R_PPC64_TPREL34
:
8619 case elfcpp::R_PPC64_DTPREL34
:
8622 case elfcpp::R_PPC64_TOC
:
8624 Output_data_got_powerpc
<size
, big_endian
>* got
8625 = target
->got_section(symtab
, layout
);
8626 if (parameters
->options().output_is_position_independent())
8628 Address off
= reloc
.get_r_offset();
8630 && data_shndx
== ppc_object
->opd_shndx()
8631 && ppc_object
->get_opd_discard(off
- 8))
8634 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
8635 Powerpc_relobj
<size
, big_endian
>* symobj
= ppc_object
;
8636 if (data_shndx
!= ppc_object
->opd_shndx())
8637 symobj
= static_cast
8638 <Powerpc_relobj
<size
, big_endian
>*>(gsym
->object());
8639 rela_dyn
->add_output_section_relative(got
->output_section(),
8640 elfcpp::R_POWERPC_RELATIVE
,
8642 object
, data_shndx
, off
,
8643 symobj
->toc_base_offset());
8648 case elfcpp::R_PPC64_ADDR64
:
8650 && target
->abiversion() < 2
8651 && data_shndx
== ppc_object
->opd_shndx()
8652 && (gsym
->is_defined_in_discarded_section()
8653 || gsym
->object() != object
))
8655 ppc_object
->set_opd_discard(reloc
.get_r_offset());
8659 case elfcpp::R_PPC64_UADDR64
:
8660 case elfcpp::R_POWERPC_ADDR32
:
8661 case elfcpp::R_POWERPC_UADDR32
:
8662 case elfcpp::R_POWERPC_ADDR24
:
8663 case elfcpp::R_POWERPC_ADDR16
:
8664 case elfcpp::R_POWERPC_ADDR16_LO
:
8665 case elfcpp::R_POWERPC_ADDR16_HI
:
8666 case elfcpp::R_POWERPC_ADDR16_HA
:
8667 case elfcpp::R_POWERPC_UADDR16
:
8668 case elfcpp::R_PPC64_ADDR16_HIGH
:
8669 case elfcpp::R_PPC64_ADDR16_HIGHA
:
8670 case elfcpp::R_PPC64_ADDR16_HIGHER
:
8671 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
8672 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
8673 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
8674 case elfcpp::R_PPC64_ADDR16_DS
:
8675 case elfcpp::R_PPC64_ADDR16_LO_DS
:
8676 case elfcpp::R_POWERPC_ADDR14
:
8677 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
8678 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
8680 // Make a PLT entry if necessary.
8681 if (gsym
->needs_plt_entry())
8683 // Since this is not a PC-relative relocation, we may be
8684 // taking the address of a function. In that case we need to
8685 // set the entry in the dynamic symbol table to the address of
8686 // the PLT call stub.
8687 bool need_ifunc_plt
= false;
8688 if ((size
== 32 || target
->abiversion() >= 2)
8689 && gsym
->is_from_dynobj()
8690 && !parameters
->options().output_is_position_independent())
8692 gsym
->set_needs_dynsym_value();
8693 need_ifunc_plt
= true;
8695 if (!is_ifunc
|| (!pushed_ifunc
&& need_ifunc_plt
))
8697 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8698 target
->push_branch(ppc_object
, data_shndx
,
8699 reloc
.get_r_offset(), r_type
, r_sym
,
8700 reloc
.get_r_addend());
8701 target
->make_plt_entry(symtab
, layout
, gsym
);
8704 // Make a dynamic relocation if necessary.
8705 if (gsym
->needs_dynamic_reloc(Scan::get_reference_flags(r_type
, target
))
8706 || (size
== 64 && is_ifunc
&& target
->abiversion() < 2))
8708 if (!parameters
->options().output_is_position_independent()
8709 && gsym
->may_need_copy_reloc())
8711 target
->copy_reloc(symtab
, layout
, object
,
8712 data_shndx
, output_section
, gsym
, reloc
);
8714 else if ((((size
== 32
8715 && r_type
== elfcpp::R_POWERPC_ADDR32
)
8717 && r_type
== elfcpp::R_PPC64_ADDR64
8718 && target
->abiversion() >= 2))
8719 && gsym
->can_use_relative_reloc(false)
8720 && !(gsym
->visibility() == elfcpp::STV_PROTECTED
8721 && parameters
->options().shared()))
8723 && r_type
== elfcpp::R_PPC64_ADDR64
8724 && target
->abiversion() < 2
8725 && (gsym
->can_use_relative_reloc(false)
8726 || data_shndx
== ppc_object
->opd_shndx())))
8728 Reloc_section
* rela_dyn
8729 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
8730 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
8731 : elfcpp::R_POWERPC_RELATIVE
);
8732 rela_dyn
->add_symbolless_global_addend(
8733 gsym
, dynrel
, output_section
, object
, data_shndx
,
8734 reloc
.get_r_offset(), reloc
.get_r_addend());
8738 Reloc_section
* rela_dyn
8739 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
8740 check_non_pic(object
, r_type
);
8741 rela_dyn
->add_global(gsym
, r_type
, output_section
,
8743 reloc
.get_r_offset(),
8744 reloc
.get_r_addend());
8747 && parameters
->options().toc_optimize()
8748 && data_shndx
== ppc_object
->toc_shndx())
8749 ppc_object
->set_no_toc_opt(reloc
.get_r_offset());
8755 case elfcpp::R_PPC64_PLT_PCREL34
:
8756 case elfcpp::R_PPC64_PLT_PCREL34_NOTOC
:
8757 case elfcpp::R_POWERPC_PLT16_LO
:
8758 case elfcpp::R_POWERPC_PLT16_HI
:
8759 case elfcpp::R_POWERPC_PLT16_HA
:
8760 case elfcpp::R_PPC64_PLT16_LO_DS
:
8762 target
->make_plt_entry(symtab
, layout
, gsym
);
8765 case elfcpp::R_PPC64_REL24_NOTOC
:
8769 case elfcpp::R_PPC_PLTREL24
:
8770 case elfcpp::R_POWERPC_REL24
:
8773 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8774 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
8775 r_type
, r_sym
, reloc
.get_r_addend());
8776 if (gsym
->needs_plt_entry()
8777 || (!gsym
->final_value_is_known()
8778 && (gsym
->is_undefined()
8779 || gsym
->is_from_dynobj()
8780 || gsym
->is_preemptible())))
8781 target
->make_plt_entry(symtab
, layout
, gsym
);
8785 case elfcpp::R_PPC64_REL64
:
8786 case elfcpp::R_POWERPC_REL32
:
8787 // Make a dynamic relocation if necessary.
8788 if (gsym
->needs_dynamic_reloc(Scan::get_reference_flags(r_type
, target
)))
8790 if (!parameters
->options().output_is_position_independent()
8791 && gsym
->may_need_copy_reloc())
8793 target
->copy_reloc(symtab
, layout
, object
,
8794 data_shndx
, output_section
, gsym
,
8799 Reloc_section
* rela_dyn
8800 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
8801 check_non_pic(object
, r_type
);
8802 rela_dyn
->add_global(gsym
, r_type
, output_section
, object
,
8803 data_shndx
, reloc
.get_r_offset(),
8804 reloc
.get_r_addend());
8809 case elfcpp::R_POWERPC_REL14
:
8810 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
8811 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
8814 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8815 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
8816 r_type
, r_sym
, reloc
.get_r_addend());
8820 case elfcpp::R_PPC64_TOCSAVE
:
8821 // R_PPC64_TOCSAVE follows a call instruction to indicate the
8822 // caller has already saved r2 and thus a plt call stub need not
8825 && target
->mark_pltcall(ppc_object
, data_shndx
,
8826 reloc
.get_r_offset() - 4, symtab
))
8828 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
8830 unsigned int shndx
= gsym
->shndx(&is_ordinary
);
8832 object
->error(_("tocsave symbol %u has bad shndx %u"),
8836 Sized_symbol
<size
>* sym
= symtab
->get_sized_symbol
<size
>(gsym
);
8837 target
->add_tocsave(ppc_object
, shndx
,
8838 sym
->value() + reloc
.get_r_addend());
8843 case elfcpp::R_POWERPC_REL16
:
8844 case elfcpp::R_POWERPC_REL16_LO
:
8845 case elfcpp::R_POWERPC_REL16_HI
:
8846 case elfcpp::R_POWERPC_REL16_HA
:
8847 case elfcpp::R_POWERPC_REL16DX_HA
:
8848 case elfcpp::R_PPC64_REL16_HIGH
:
8849 case elfcpp::R_PPC64_REL16_HIGHA
:
8850 case elfcpp::R_PPC64_REL16_HIGHER
:
8851 case elfcpp::R_PPC64_REL16_HIGHERA
:
8852 case elfcpp::R_PPC64_REL16_HIGHEST
:
8853 case elfcpp::R_PPC64_REL16_HIGHESTA
:
8854 case elfcpp::R_POWERPC_SECTOFF
:
8855 case elfcpp::R_POWERPC_SECTOFF_LO
:
8856 case elfcpp::R_POWERPC_SECTOFF_HI
:
8857 case elfcpp::R_POWERPC_SECTOFF_HA
:
8858 case elfcpp::R_PPC64_SECTOFF_DS
:
8859 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
8860 case elfcpp::R_POWERPC_TPREL16
:
8861 case elfcpp::R_POWERPC_TPREL16_LO
:
8862 case elfcpp::R_POWERPC_TPREL16_HI
:
8863 case elfcpp::R_POWERPC_TPREL16_HA
:
8864 case elfcpp::R_PPC64_TPREL16_DS
:
8865 case elfcpp::R_PPC64_TPREL16_LO_DS
:
8866 case elfcpp::R_PPC64_TPREL16_HIGH
:
8867 case elfcpp::R_PPC64_TPREL16_HIGHA
:
8868 case elfcpp::R_PPC64_TPREL16_HIGHER
:
8869 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
8870 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
8871 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
8872 case elfcpp::R_POWERPC_DTPREL16
:
8873 case elfcpp::R_POWERPC_DTPREL16_LO
:
8874 case elfcpp::R_POWERPC_DTPREL16_HI
:
8875 case elfcpp::R_POWERPC_DTPREL16_HA
:
8876 case elfcpp::R_PPC64_DTPREL16_DS
:
8877 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
8878 case elfcpp::R_PPC64_DTPREL16_HIGH
:
8879 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
8880 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
8881 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
8882 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
8883 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
8884 case elfcpp::R_PPC64_TLSGD
:
8885 case elfcpp::R_PPC64_TLSLD
:
8886 case elfcpp::R_PPC64_ADDR64_LOCAL
:
8889 case elfcpp::R_PPC64_GOT_PCREL34
:
8890 case elfcpp::R_POWERPC_GOT16
:
8891 case elfcpp::R_POWERPC_GOT16_LO
:
8892 case elfcpp::R_POWERPC_GOT16_HI
:
8893 case elfcpp::R_POWERPC_GOT16_HA
:
8894 case elfcpp::R_PPC64_GOT16_DS
:
8895 case elfcpp::R_PPC64_GOT16_LO_DS
:
8897 // The symbol requires a GOT entry.
8898 Output_data_got_powerpc
<size
, big_endian
>* got
;
8900 got
= target
->got_section(symtab
, layout
);
8901 if (gsym
->final_value_is_known())
8904 && (size
== 32 || target
->abiversion() >= 2))
8905 got
->add_global_plt(gsym
, GOT_TYPE_STANDARD
);
8907 got
->add_global(gsym
, GOT_TYPE_STANDARD
);
8909 else if (!gsym
->has_got_offset(GOT_TYPE_STANDARD
))
8911 // If we are generating a shared object or a pie, this
8912 // symbol's GOT entry will be set by a dynamic relocation.
8913 unsigned int off
= got
->add_constant(0);
8914 gsym
->set_got_offset(GOT_TYPE_STANDARD
, off
);
8916 Reloc_section
* rela_dyn
8917 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
8919 if (gsym
->can_use_relative_reloc(false)
8921 || target
->abiversion() >= 2)
8922 && gsym
->visibility() == elfcpp::STV_PROTECTED
8923 && parameters
->options().shared()))
8925 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
8926 : elfcpp::R_POWERPC_RELATIVE
);
8927 rela_dyn
->add_global_relative(gsym
, dynrel
, got
, off
, 0, false);
8931 unsigned int dynrel
= elfcpp::R_POWERPC_GLOB_DAT
;
8932 rela_dyn
->add_global(gsym
, dynrel
, got
, off
, 0);
8938 case elfcpp::R_PPC64_TOC16
:
8939 case elfcpp::R_PPC64_TOC16_LO
:
8940 case elfcpp::R_PPC64_TOC16_HI
:
8941 case elfcpp::R_PPC64_TOC16_HA
:
8942 case elfcpp::R_PPC64_TOC16_DS
:
8943 case elfcpp::R_PPC64_TOC16_LO_DS
:
8944 // We need a GOT section.
8945 target
->got_section(symtab
, layout
);
8948 case elfcpp::R_PPC64_GOT_TLSGD_PCREL34
:
8949 case elfcpp::R_POWERPC_GOT_TLSGD16
:
8950 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
8951 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
8952 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
8954 const bool final
= gsym
->final_value_is_known();
8955 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
8956 if (tls_type
== tls::TLSOPT_NONE
)
8958 Output_data_got_powerpc
<size
, big_endian
>* got
8959 = target
->got_section(symtab
, layout
);
8960 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
8961 got
->add_global_pair_with_rel(gsym
, GOT_TYPE_TLSGD
, rela_dyn
,
8962 elfcpp::R_POWERPC_DTPMOD
,
8963 elfcpp::R_POWERPC_DTPREL
);
8965 else if (tls_type
== tls::TLSOPT_TO_IE
)
8967 if (!gsym
->has_got_offset(GOT_TYPE_TPREL
))
8969 Output_data_got_powerpc
<size
, big_endian
>* got
8970 = target
->got_section(symtab
, layout
);
8971 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
8972 if (gsym
->is_undefined()
8973 || gsym
->is_from_dynobj())
8975 got
->add_global_with_rel(gsym
, GOT_TYPE_TPREL
, rela_dyn
,
8976 elfcpp::R_POWERPC_TPREL
);
8980 unsigned int off
= got
->add_constant(0);
8981 gsym
->set_got_offset(GOT_TYPE_TPREL
, off
);
8982 unsigned int dynrel
= elfcpp::R_POWERPC_TPREL
;
8983 rela_dyn
->add_symbolless_global_addend(gsym
, dynrel
,
8988 else if (tls_type
== tls::TLSOPT_TO_LE
)
8990 // no GOT relocs needed for Local Exec.
8997 case elfcpp::R_PPC64_GOT_TLSLD_PCREL34
:
8998 case elfcpp::R_POWERPC_GOT_TLSLD16
:
8999 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
9000 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
9001 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
9003 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
9004 if (tls_type
== tls::TLSOPT_NONE
)
9005 target
->tlsld_got_offset(symtab
, layout
, object
);
9006 else if (tls_type
== tls::TLSOPT_TO_LE
)
9008 // no GOT relocs needed for Local Exec.
9009 if (parameters
->options().emit_relocs())
9011 Output_section
* os
= layout
->tls_segment()->first_section();
9012 gold_assert(os
!= NULL
);
9013 os
->set_needs_symtab_index();
9021 case elfcpp::R_PPC64_GOT_DTPREL_PCREL34
:
9022 case elfcpp::R_POWERPC_GOT_DTPREL16
:
9023 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
9024 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
9025 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
9027 Output_data_got_powerpc
<size
, big_endian
>* got
9028 = target
->got_section(symtab
, layout
);
9029 if (!gsym
->final_value_is_known()
9030 && (gsym
->is_from_dynobj()
9031 || gsym
->is_undefined()
9032 || gsym
->is_preemptible()))
9033 got
->add_global_with_rel(gsym
, GOT_TYPE_DTPREL
,
9034 target
->rela_dyn_section(layout
),
9035 elfcpp::R_POWERPC_DTPREL
);
9037 got
->add_global_tls(gsym
, GOT_TYPE_DTPREL
);
9041 case elfcpp::R_PPC64_GOT_TPREL_PCREL34
:
9042 case elfcpp::R_POWERPC_GOT_TPREL16
:
9043 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
9044 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
9045 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
9047 const bool final
= gsym
->final_value_is_known();
9048 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
9049 if (tls_type
== tls::TLSOPT_NONE
)
9051 if (!gsym
->has_got_offset(GOT_TYPE_TPREL
))
9053 Output_data_got_powerpc
<size
, big_endian
>* got
9054 = target
->got_section(symtab
, layout
);
9055 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
9056 if (gsym
->is_undefined()
9057 || gsym
->is_from_dynobj())
9059 got
->add_global_with_rel(gsym
, GOT_TYPE_TPREL
, rela_dyn
,
9060 elfcpp::R_POWERPC_TPREL
);
9064 unsigned int off
= got
->add_constant(0);
9065 gsym
->set_got_offset(GOT_TYPE_TPREL
, off
);
9066 unsigned int dynrel
= elfcpp::R_POWERPC_TPREL
;
9067 rela_dyn
->add_symbolless_global_addend(gsym
, dynrel
,
9072 else if (tls_type
== tls::TLSOPT_TO_LE
)
9074 // no GOT relocs needed for Local Exec.
9082 unsupported_reloc_global(object
, r_type
, gsym
);
9087 && parameters
->options().toc_optimize())
9089 if (data_shndx
== ppc_object
->toc_shndx())
9092 if (r_type
!= elfcpp::R_PPC64_ADDR64
9093 || (is_ifunc
&& target
->abiversion() < 2))
9095 else if (parameters
->options().output_is_position_independent()
9096 && (is_ifunc
|| gsym
->is_absolute() || gsym
->is_undefined()))
9099 ppc_object
->set_no_toc_opt(reloc
.get_r_offset());
9102 enum {no_check
, check_lo
, check_ha
} insn_check
;
9106 insn_check
= no_check
;
9109 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
9110 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
9111 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
9112 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
9113 case elfcpp::R_POWERPC_GOT16_HA
:
9114 case elfcpp::R_PPC64_TOC16_HA
:
9115 insn_check
= check_ha
;
9118 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
9119 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
9120 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
9121 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
9122 case elfcpp::R_POWERPC_GOT16_LO
:
9123 case elfcpp::R_PPC64_GOT16_LO_DS
:
9124 case elfcpp::R_PPC64_TOC16_LO
:
9125 case elfcpp::R_PPC64_TOC16_LO_DS
:
9126 insn_check
= check_lo
;
9130 section_size_type slen
;
9131 const unsigned char* view
= NULL
;
9132 if (insn_check
!= no_check
)
9134 view
= ppc_object
->section_contents(data_shndx
, &slen
, false);
9135 section_size_type off
=
9136 convert_to_section_size_type(reloc
.get_r_offset()) & -4;
9139 uint32_t insn
= elfcpp::Swap
<32, big_endian
>::readval(view
+ off
);
9140 if (insn_check
== check_lo
9141 ? !ok_lo_toc_insn(insn
, r_type
)
9142 : ((insn
& ((0x3f << 26) | 0x1f << 16))
9143 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9145 ppc_object
->set_no_toc_opt();
9146 gold_warning(_("%s: toc optimization is not supported "
9147 "for %#08x instruction"),
9148 ppc_object
->name().c_str(), insn
);
9157 case elfcpp::R_PPC64_TOC16
:
9158 case elfcpp::R_PPC64_TOC16_LO
:
9159 case elfcpp::R_PPC64_TOC16_HI
:
9160 case elfcpp::R_PPC64_TOC16_HA
:
9161 case elfcpp::R_PPC64_TOC16_DS
:
9162 case elfcpp::R_PPC64_TOC16_LO_DS
:
9163 if (gsym
->source() == Symbol::FROM_OBJECT
9164 && !gsym
->object()->is_dynamic())
9166 Powerpc_relobj
<size
, big_endian
>* sym_object
9167 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(gsym
->object());
9169 unsigned int shndx
= gsym
->shndx(&is_ordinary
);
9170 if (shndx
== sym_object
->toc_shndx())
9172 Sized_symbol
<size
>* sym
= symtab
->get_sized_symbol
<size
>(gsym
);
9173 Address dst_off
= sym
->value() + reloc
.get_r_addend();
9174 if (dst_off
< sym_object
->section_size(shndx
))
9177 if (r_type
== elfcpp::R_PPC64_TOC16_HA
)
9179 else if (r_type
== elfcpp::R_PPC64_TOC16_LO_DS
)
9181 // Need to check that the insn is a ld
9183 view
= ppc_object
->section_contents(data_shndx
,
9186 section_size_type off
=
9187 (convert_to_section_size_type(reloc
.get_r_offset())
9188 + (big_endian
? -2 : 3));
9190 && (view
[off
] & (0x3f << 2)) == (58u << 2))
9194 sym_object
->set_no_toc_opt(dst_off
);
9206 case elfcpp::R_PPC_LOCAL24PC
:
9207 if (strcmp(gsym
->name(), "_GLOBAL_OFFSET_TABLE_") == 0)
9208 gold_error(_("%s: unsupported -mbss-plt code"),
9209 ppc_object
->name().c_str());
9218 case elfcpp::R_POWERPC_GOT_TLSLD16
:
9219 case elfcpp::R_POWERPC_GOT_TLSGD16
:
9220 case elfcpp::R_POWERPC_GOT_TPREL16
:
9221 case elfcpp::R_POWERPC_GOT_DTPREL16
:
9222 case elfcpp::R_POWERPC_GOT16
:
9223 case elfcpp::R_PPC64_GOT16_DS
:
9224 case elfcpp::R_PPC64_TOC16
:
9225 case elfcpp::R_PPC64_TOC16_DS
:
9226 ppc_object
->set_has_small_toc_reloc();
9234 case elfcpp::R_PPC64_TPREL16_DS
:
9235 case elfcpp::R_PPC64_TPREL16_LO_DS
:
9236 case elfcpp::R_PPC64_TPREL16_HIGH
:
9237 case elfcpp::R_PPC64_TPREL16_HIGHA
:
9238 case elfcpp::R_PPC64_TPREL16_HIGHER
:
9239 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
9240 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
9241 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
9242 case elfcpp::R_PPC64_TPREL34
:
9246 case elfcpp::R_POWERPC_TPREL16
:
9247 case elfcpp::R_POWERPC_TPREL16_LO
:
9248 case elfcpp::R_POWERPC_TPREL16_HI
:
9249 case elfcpp::R_POWERPC_TPREL16_HA
:
9250 layout
->set_has_static_tls();
9258 case elfcpp::R_POWERPC_TPREL16_HA
:
9259 if (target
->tprel_opt())
9261 section_size_type slen
;
9262 const unsigned char* view
= NULL
;
9263 view
= ppc_object
->section_contents(data_shndx
, &slen
, false);
9264 section_size_type off
9265 = convert_to_section_size_type(reloc
.get_r_offset()) & -4;
9268 uint32_t insn
= elfcpp::Swap
<32, big_endian
>::readval(view
+ off
);
9269 if ((insn
& ((0x3fu
<< 26) | 0x1f << 16))
9270 != ((15u << 26) | ((size
== 32 ? 2 : 13) << 16)))
9271 target
->set_tprel_opt(false);
9276 case elfcpp::R_PPC64_TPREL16_HIGH
:
9277 case elfcpp::R_PPC64_TPREL16_HIGHA
:
9278 case elfcpp::R_PPC64_TPREL16_HIGHER
:
9279 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
9280 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
9281 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
9285 case elfcpp::R_POWERPC_TPREL16_HI
:
9286 target
->set_tprel_opt(false);
9294 case elfcpp::R_PPC64_D34
:
9295 case elfcpp::R_PPC64_D34_LO
:
9296 case elfcpp::R_PPC64_D34_HI30
:
9297 case elfcpp::R_PPC64_D34_HA30
:
9298 case elfcpp::R_PPC64_D28
:
9299 case elfcpp::R_PPC64_PCREL34
:
9300 case elfcpp::R_PPC64_PCREL28
:
9301 case elfcpp::R_PPC64_TPREL34
:
9302 case elfcpp::R_PPC64_DTPREL34
:
9303 case elfcpp::R_PPC64_PLT_PCREL34
:
9304 case elfcpp::R_PPC64_PLT_PCREL34_NOTOC
:
9305 case elfcpp::R_PPC64_GOT_PCREL34
:
9306 case elfcpp::R_PPC64_GOT_TLSGD_PCREL34
:
9307 case elfcpp::R_PPC64_GOT_TLSLD_PCREL34
:
9308 case elfcpp::R_PPC64_GOT_DTPREL_PCREL34
:
9309 case elfcpp::R_PPC64_GOT_TPREL_PCREL34
:
9310 target
->set_power10_relocs();
9317 // Process relocations for gc.
9319 template<int size
, bool big_endian
>
9321 Target_powerpc
<size
, big_endian
>::gc_process_relocs(
9322 Symbol_table
* symtab
,
9324 Sized_relobj_file
<size
, big_endian
>* object
,
9325 unsigned int data_shndx
,
9327 const unsigned char* prelocs
,
9329 Output_section
* output_section
,
9330 bool needs_special_offset_handling
,
9331 size_t local_symbol_count
,
9332 const unsigned char* plocal_symbols
)
9334 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
9335 typedef gold::Default_classify_reloc
<elfcpp::SHT_RELA
, size
, big_endian
>
9338 Powerpc_relobj
<size
, big_endian
>* ppc_object
9339 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
9341 ppc_object
->set_opd_valid();
9342 if (size
== 64 && data_shndx
== ppc_object
->opd_shndx())
9344 typename Powerpc_relobj
<size
, big_endian
>::Access_from::iterator p
;
9345 for (p
= ppc_object
->access_from_map()->begin();
9346 p
!= ppc_object
->access_from_map()->end();
9349 Address dst_off
= p
->first
;
9350 unsigned int dst_indx
= ppc_object
->get_opd_ent(dst_off
);
9351 typename Powerpc_relobj
<size
, big_endian
>::Section_refs::iterator s
;
9352 for (s
= p
->second
.begin(); s
!= p
->second
.end(); ++s
)
9354 Relobj
* src_obj
= s
->first
;
9355 unsigned int src_indx
= s
->second
;
9356 symtab
->gc()->add_reference(src_obj
, src_indx
,
9357 ppc_object
, dst_indx
);
9361 ppc_object
->access_from_map()->clear();
9362 ppc_object
->process_gc_mark(symtab
);
9363 // Don't look at .opd relocs as .opd will reference everything.
9367 gold::gc_process_relocs
<size
, big_endian
, Powerpc
, Scan
, Classify_reloc
>(
9376 needs_special_offset_handling
,
9381 // Handle target specific gc actions when adding a gc reference from
9382 // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX
9383 // and DST_OFF. For powerpc64, this adds a referenc to the code
9384 // section of a function descriptor.
9386 template<int size
, bool big_endian
>
9388 Target_powerpc
<size
, big_endian
>::do_gc_add_reference(
9389 Symbol_table
* symtab
,
9391 unsigned int src_shndx
,
9393 unsigned int dst_shndx
,
9394 Address dst_off
) const
9396 if (size
!= 64 || dst_obj
->is_dynamic())
9399 Powerpc_relobj
<size
, big_endian
>* ppc_object
9400 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(dst_obj
);
9401 if (dst_shndx
!= 0 && dst_shndx
== ppc_object
->opd_shndx())
9403 if (ppc_object
->opd_valid())
9405 dst_shndx
= ppc_object
->get_opd_ent(dst_off
);
9406 symtab
->gc()->add_reference(src_obj
, src_shndx
, dst_obj
, dst_shndx
);
9410 // If we haven't run scan_opd_relocs, we must delay
9411 // processing this function descriptor reference.
9412 ppc_object
->add_reference(src_obj
, src_shndx
, dst_off
);
9417 // Add any special sections for this symbol to the gc work list.
9418 // For powerpc64, this adds the code section of a function
9421 template<int size
, bool big_endian
>
9423 Target_powerpc
<size
, big_endian
>::do_gc_mark_symbol(
9424 Symbol_table
* symtab
,
9427 if (size
== 64 && sym
->object()->pluginobj() == NULL
)
9429 Powerpc_relobj
<size
, big_endian
>* ppc_object
9430 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(sym
->object());
9432 unsigned int shndx
= sym
->shndx(&is_ordinary
);
9433 if (is_ordinary
&& shndx
!= 0 && shndx
== ppc_object
->opd_shndx())
9435 Sized_symbol
<size
>* gsym
= symtab
->get_sized_symbol
<size
>(sym
);
9436 Address dst_off
= gsym
->value();
9437 if (ppc_object
->opd_valid())
9439 unsigned int dst_indx
= ppc_object
->get_opd_ent(dst_off
);
9440 symtab
->gc()->worklist().push_back(Section_id(ppc_object
,
9444 ppc_object
->add_gc_mark(dst_off
);
9449 // For a symbol location in .opd, set LOC to the location of the
9452 template<int size
, bool big_endian
>
9454 Target_powerpc
<size
, big_endian
>::do_function_location(
9455 Symbol_location
* loc
) const
9457 if (size
== 64 && loc
->shndx
!= 0)
9459 if (loc
->object
->is_dynamic())
9461 Powerpc_dynobj
<size
, big_endian
>* ppc_object
9462 = static_cast<Powerpc_dynobj
<size
, big_endian
>*>(loc
->object
);
9463 if (loc
->shndx
== ppc_object
->opd_shndx())
9466 Address off
= loc
->offset
- ppc_object
->opd_address();
9467 loc
->shndx
= ppc_object
->get_opd_ent(off
, &dest_off
);
9468 loc
->offset
= dest_off
;
9473 const Powerpc_relobj
<size
, big_endian
>* ppc_object
9474 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>(loc
->object
);
9475 if (loc
->shndx
== ppc_object
->opd_shndx())
9478 loc
->shndx
= ppc_object
->get_opd_ent(loc
->offset
, &dest_off
);
9479 loc
->offset
= dest_off
;
9485 // FNOFFSET in section SHNDX in OBJECT is the start of a function
9486 // compiled with -fsplit-stack. The function calls non-split-stack
9487 // code. Change the function to ensure it has enough stack space to
9488 // call some random function.
9490 template<int size
, bool big_endian
>
9492 Target_powerpc
<size
, big_endian
>::do_calls_non_split(
9495 section_offset_type fnoffset
,
9496 section_size_type fnsize
,
9497 const unsigned char* prelocs
,
9499 unsigned char* view
,
9500 section_size_type view_size
,
9502 std::string
* to
) const
9504 // 32-bit not supported.
9508 Target::do_calls_non_split(object
, shndx
, fnoffset
, fnsize
,
9509 prelocs
, reloc_count
, view
, view_size
,
9514 // The function always starts with
9515 // ld %r0,-0x7000-64(%r13) # tcbhead_t.__private_ss
9516 // addis %r12,%r1,-allocate@ha
9517 // addi %r12,%r12,-allocate@l
9519 // but note that the addis or addi may be replaced with a nop
9521 unsigned char *entry
= view
+ fnoffset
;
9522 uint32_t insn
= elfcpp::Swap
<32, big_endian
>::readval(entry
);
9524 if ((insn
& 0xffff0000) == addis_2_12
)
9526 /* Skip ELFv2 global entry code. */
9528 insn
= elfcpp::Swap
<32, big_endian
>::readval(entry
);
9531 unsigned char *pinsn
= entry
;
9533 const uint32_t ld_private_ss
= 0xe80d8fc0;
9534 if (insn
== ld_private_ss
)
9536 int32_t allocate
= 0;
9540 insn
= elfcpp::Swap
<32, big_endian
>::readval(pinsn
);
9541 if ((insn
& 0xffff0000) == addis_12_1
)
9542 allocate
+= (insn
& 0xffff) << 16;
9543 else if ((insn
& 0xffff0000) == addi_12_1
9544 || (insn
& 0xffff0000) == addi_12_12
)
9545 allocate
+= ((insn
& 0xffff) ^ 0x8000) - 0x8000;
9546 else if (insn
!= nop
)
9549 if (insn
== cmpld_7_12_0
&& pinsn
== entry
+ 12)
9551 int extra
= parameters
->options().split_stack_adjust_size();
9553 if (allocate
>= 0 || extra
< 0)
9555 object
->error(_("split-stack stack size overflow at "
9556 "section %u offset %0zx"),
9557 shndx
, static_cast<size_t>(fnoffset
));
9561 insn
= addis_12_1
| (((allocate
+ 0x8000) >> 16) & 0xffff);
9562 if (insn
!= addis_12_1
)
9564 elfcpp::Swap
<32, big_endian
>::writeval(pinsn
, insn
);
9566 insn
= addi_12_12
| (allocate
& 0xffff);
9567 if (insn
!= addi_12_12
)
9569 elfcpp::Swap
<32, big_endian
>::writeval(pinsn
, insn
);
9575 insn
= addi_12_1
| (allocate
& 0xffff);
9576 elfcpp::Swap
<32, big_endian
>::writeval(pinsn
, insn
);
9579 if (pinsn
!= entry
+ 12)
9580 elfcpp::Swap
<32, big_endian
>::writeval(pinsn
, nop
);
9588 if (!object
->has_no_split_stack())
9589 object
->error(_("failed to match split-stack sequence at "
9590 "section %u offset %0zx"),
9591 shndx
, static_cast<size_t>(fnoffset
));
9595 // Scan relocations for a section.
9597 template<int size
, bool big_endian
>
9599 Target_powerpc
<size
, big_endian
>::scan_relocs(
9600 Symbol_table
* symtab
,
9602 Sized_relobj_file
<size
, big_endian
>* object
,
9603 unsigned int data_shndx
,
9604 unsigned int sh_type
,
9605 const unsigned char* prelocs
,
9607 Output_section
* output_section
,
9608 bool needs_special_offset_handling
,
9609 size_t local_symbol_count
,
9610 const unsigned char* plocal_symbols
)
9612 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
9613 typedef gold::Default_classify_reloc
<elfcpp::SHT_RELA
, size
, big_endian
>
9616 if (!this->plt_localentry0_init_
)
9618 bool plt_localentry0
= false;
9620 && this->abiversion() >= 2)
9622 if (parameters
->options().user_set_plt_localentry())
9623 plt_localentry0
= parameters
->options().plt_localentry();
9625 && symtab
->lookup("GLIBC_2.26", NULL
) == NULL
)
9626 gold_warning(_("--plt-localentry is especially dangerous without "
9627 "ld.so support to detect ABI violations"));
9629 this->plt_localentry0_
= plt_localentry0
;
9630 this->plt_localentry0_init_
= true;
9633 if (sh_type
== elfcpp::SHT_REL
)
9635 gold_error(_("%s: unsupported REL reloc section"),
9636 object
->name().c_str());
9640 gold::scan_relocs
<size
, big_endian
, Powerpc
, Scan
, Classify_reloc
>(
9649 needs_special_offset_handling
,
9653 if (this->plt_localentry0_
&& this->power10_relocs_
)
9655 gold_warning(_("--plt-localentry is incompatible with "
9656 "power10 pc-relative code"));
9657 this->plt_localentry0_
= false;
9661 // Functor class for processing the global symbol table.
9662 // Removes symbols defined on discarded opd entries.
9664 template<bool big_endian
>
9665 class Global_symbol_visitor_opd
9668 Global_symbol_visitor_opd()
9672 operator()(Sized_symbol
<64>* sym
)
9674 if (sym
->has_symtab_index()
9675 || sym
->source() != Symbol::FROM_OBJECT
9676 || !sym
->in_real_elf())
9679 if (sym
->object()->is_dynamic())
9682 Powerpc_relobj
<64, big_endian
>* symobj
9683 = static_cast<Powerpc_relobj
<64, big_endian
>*>(sym
->object());
9684 if (symobj
->opd_shndx() == 0)
9688 unsigned int shndx
= sym
->shndx(&is_ordinary
);
9689 if (shndx
== symobj
->opd_shndx()
9690 && symobj
->get_opd_discard(sym
->value()))
9692 sym
->set_undefined();
9693 sym
->set_visibility(elfcpp::STV_DEFAULT
);
9694 sym
->set_is_defined_in_discarded_section();
9695 sym
->set_symtab_index(-1U);
9700 template<int size
, bool big_endian
>
9702 Target_powerpc
<size
, big_endian
>::define_save_restore_funcs(
9704 Symbol_table
* symtab
)
9708 Output_data_save_res
<size
, big_endian
>* savres
9709 = new Output_data_save_res
<size
, big_endian
>(symtab
);
9710 this->savres_section_
= savres
;
9711 layout
->add_output_section_data(".text", elfcpp::SHT_PROGBITS
,
9712 elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
,
9713 savres
, ORDER_TEXT
, false);
9717 // Sort linker created .got section first (for the header), then input
9718 // sections belonging to files using small model code.
9720 template<bool big_endian
>
9721 class Sort_toc_sections
9725 operator()(const Output_section::Input_section
& is1
,
9726 const Output_section::Input_section
& is2
) const
9728 if (!is1
.is_input_section() && is2
.is_input_section())
9731 = (is1
.is_input_section()
9732 && (static_cast<const Powerpc_relobj
<64, big_endian
>*>(is1
.relobj())
9733 ->has_small_toc_reloc()));
9735 = (is2
.is_input_section()
9736 && (static_cast<const Powerpc_relobj
<64, big_endian
>*>(is2
.relobj())
9737 ->has_small_toc_reloc()));
9738 return small1
&& !small2
;
9742 // Finalize the sections.
9744 template<int size
, bool big_endian
>
9746 Target_powerpc
<size
, big_endian
>::do_finalize_sections(
9748 const Input_objects
* input_objects
,
9749 Symbol_table
* symtab
)
9751 if (parameters
->doing_static_link())
9753 // At least some versions of glibc elf-init.o have a strong
9754 // reference to __rela_iplt marker syms. A weak ref would be
9756 if (this->iplt_
!= NULL
)
9758 Reloc_section
* rel
= this->iplt_
->rel_plt();
9759 symtab
->define_in_output_data("__rela_iplt_start", NULL
,
9760 Symbol_table::PREDEFINED
, rel
, 0, 0,
9761 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
9762 elfcpp::STV_HIDDEN
, 0, false, true);
9763 symtab
->define_in_output_data("__rela_iplt_end", NULL
,
9764 Symbol_table::PREDEFINED
, rel
, 0, 0,
9765 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
9766 elfcpp::STV_HIDDEN
, 0, true, true);
9770 symtab
->define_as_constant("__rela_iplt_start", NULL
,
9771 Symbol_table::PREDEFINED
, 0, 0,
9772 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
9773 elfcpp::STV_HIDDEN
, 0, true, false);
9774 symtab
->define_as_constant("__rela_iplt_end", NULL
,
9775 Symbol_table::PREDEFINED
, 0, 0,
9776 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
9777 elfcpp::STV_HIDDEN
, 0, true, false);
9783 typedef Global_symbol_visitor_opd
<big_endian
> Symbol_visitor
;
9784 symtab
->for_all_symbols
<64, Symbol_visitor
>(Symbol_visitor());
9786 if (!parameters
->options().relocatable())
9788 this->define_save_restore_funcs(layout
, symtab
);
9790 // Annoyingly, we need to make these sections now whether or
9791 // not we need them. If we delay until do_relax then we
9792 // need to mess with the relaxation machinery checkpointing.
9793 this->got_section(symtab
, layout
);
9794 this->make_brlt_section(layout
);
9796 if (parameters
->options().toc_sort())
9798 Output_section
* os
= this->got_
->output_section();
9799 if (os
!= NULL
&& os
->input_sections().size() > 1)
9800 std::stable_sort(os
->input_sections().begin(),
9801 os
->input_sections().end(),
9802 Sort_toc_sections
<big_endian
>());
9807 // Fill in some more dynamic tags.
9808 Output_data_dynamic
* odyn
= layout
->dynamic_data();
9811 const Reloc_section
* rel_plt
= (this->plt_
== NULL
9813 : this->plt_
->rel_plt());
9814 layout
->add_target_dynamic_tags(false, this->plt_
, rel_plt
,
9815 this->rela_dyn_
, true, size
== 32);
9819 if (this->got_
!= NULL
)
9821 this->got_
->finalize_data_size();
9822 odyn
->add_section_plus_offset(elfcpp::DT_PPC_GOT
,
9823 this->got_
, this->got_
->g_o_t());
9825 if (this->has_tls_get_addr_opt_
)
9826 odyn
->add_constant(elfcpp::DT_PPC_OPT
, elfcpp::PPC_OPT_TLS
);
9830 if (this->glink_
!= NULL
)
9832 this->glink_
->finalize_data_size();
9833 odyn
->add_section_plus_offset(elfcpp::DT_PPC64_GLINK
,
9835 (this->glink_
->pltresolve_size()
9838 if (this->has_localentry0_
|| this->has_tls_get_addr_opt_
)
9839 odyn
->add_constant(elfcpp::DT_PPC64_OPT
,
9840 ((this->has_localentry0_
9841 ? elfcpp::PPC64_OPT_LOCALENTRY
: 0)
9842 | (this->has_tls_get_addr_opt_
9843 ? elfcpp::PPC64_OPT_TLS
: 0)));
9847 // Emit any relocs we saved in an attempt to avoid generating COPY
9849 if (this->copy_relocs_
.any_saved_relocs())
9850 this->copy_relocs_
.emit(this->rela_dyn_section(layout
));
9852 for (Input_objects::Relobj_iterator p
= input_objects
->relobj_begin();
9853 p
!= input_objects
->relobj_end();
9856 Powerpc_relobj
<size
, big_endian
>* ppc_relobj
9857 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(*p
);
9858 if (ppc_relobj
->attributes_section_data())
9859 this->merge_object_attributes(ppc_relobj
,
9860 ppc_relobj
->attributes_section_data());
9862 for (Input_objects::Dynobj_iterator p
= input_objects
->dynobj_begin();
9863 p
!= input_objects
->dynobj_end();
9866 Powerpc_dynobj
<size
, big_endian
>* ppc_dynobj
9867 = static_cast<Powerpc_dynobj
<size
, big_endian
>*>(*p
);
9868 if (ppc_dynobj
->attributes_section_data())
9869 this->merge_object_attributes(ppc_dynobj
,
9870 ppc_dynobj
->attributes_section_data());
9873 // Create a .gnu.attributes section if we have merged any attributes
9875 if (this->attributes_section_data_
!= NULL
9876 && this->attributes_section_data_
->size() != 0)
9878 Output_attributes_section_data
* attributes_section
9879 = new Output_attributes_section_data(*this->attributes_section_data_
);
9880 layout
->add_output_section_data(".gnu.attributes",
9881 elfcpp::SHT_GNU_ATTRIBUTES
, 0,
9882 attributes_section
, ORDER_INVALID
, false);
9886 // Merge object attributes from input file called NAME with those of the
9887 // output. The input object attributes are in the object pointed by PASD.
9889 template<int size
, bool big_endian
>
9891 Target_powerpc
<size
, big_endian
>::merge_object_attributes(
9893 const Attributes_section_data
* pasd
)
9895 // Return if there is no attributes section data.
9899 // Create output object attributes.
9900 if (this->attributes_section_data_
== NULL
)
9901 this->attributes_section_data_
= new Attributes_section_data(NULL
, 0);
9903 const int vendor
= Object_attribute::OBJ_ATTR_GNU
;
9904 const Object_attribute
* in_attr
= pasd
->known_attributes(vendor
);
9905 Object_attribute
* out_attr
9906 = this->attributes_section_data_
->known_attributes(vendor
);
9908 const char* name
= obj
->name().c_str();
9912 int tag
= elfcpp::Tag_GNU_Power_ABI_FP
;
9913 int in_fp
= in_attr
[tag
].int_value() & 0xf;
9914 int out_fp
= out_attr
[tag
].int_value() & 0xf;
9915 bool warn_only
= obj
->is_dynamic();
9916 if (in_fp
!= out_fp
)
9919 if ((in_fp
& 3) == 0)
9921 else if ((out_fp
& 3) == 0)
9925 out_fp
|= in_fp
& 3;
9926 out_attr
[tag
].set_int_value(out_fp
);
9927 out_attr
[tag
].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL
);
9928 this->last_fp_
= name
;
9931 else if ((out_fp
& 3) != 2 && (in_fp
& 3) == 2)
9933 err
= N_("%s uses hard float, %s uses soft float");
9934 first
= this->last_fp_
;
9937 else if ((out_fp
& 3) == 2 && (in_fp
& 3) != 2)
9939 err
= N_("%s uses hard float, %s uses soft float");
9941 second
= this->last_fp_
;
9943 else if ((out_fp
& 3) == 1 && (in_fp
& 3) == 3)
9945 err
= N_("%s uses double-precision hard float, "
9946 "%s uses single-precision hard float");
9947 first
= this->last_fp_
;
9950 else if ((out_fp
& 3) == 3 && (in_fp
& 3) == 1)
9952 err
= N_("%s uses double-precision hard float, "
9953 "%s uses single-precision hard float");
9955 second
= this->last_fp_
;
9958 if (err
|| (in_fp
& 0xc) == 0)
9960 else if ((out_fp
& 0xc) == 0)
9964 out_fp
|= in_fp
& 0xc;
9965 out_attr
[tag
].set_int_value(out_fp
);
9966 out_attr
[tag
].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL
);
9967 this->last_ld_
= name
;
9970 else if ((out_fp
& 0xc) != 2 * 4 && (in_fp
& 0xc) == 2 * 4)
9972 err
= N_("%s uses 64-bit long double, %s uses 128-bit long double");
9974 second
= this->last_ld_
;
9976 else if ((in_fp
& 0xc) != 2 * 4 && (out_fp
& 0xc) == 2 * 4)
9978 err
= N_("%s uses 64-bit long double, %s uses 128-bit long double");
9979 first
= this->last_ld_
;
9982 else if ((out_fp
& 0xc) == 1 * 4 && (in_fp
& 0xc) == 3 * 4)
9984 err
= N_("%s uses IBM long double, %s uses IEEE long double");
9985 first
= this->last_ld_
;
9988 else if ((out_fp
& 0xc) == 3 * 4 && (in_fp
& 0xc) == 1 * 4)
9990 err
= N_("%s uses IBM long double, %s uses IEEE long double");
9992 second
= this->last_ld_
;
9997 if (parameters
->options().warn_mismatch())
10000 gold_warning(_(err
), first
, second
);
10002 gold_error(_(err
), first
, second
);
10004 // Arrange for this attribute to be deleted. It's better to
10005 // say "don't know" about a file than to wrongly claim compliance.
10007 out_attr
[tag
].set_type(0);
10013 tag
= elfcpp::Tag_GNU_Power_ABI_Vector
;
10014 int in_vec
= in_attr
[tag
].int_value() & 3;
10015 int out_vec
= out_attr
[tag
].int_value() & 3;
10016 if (in_vec
!= out_vec
)
10021 else if (out_vec
== 0)
10024 out_attr
[tag
].set_int_value(out_vec
);
10025 out_attr
[tag
].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL
);
10026 this->last_vec_
= name
;
10028 // For now, allow generic to transition to AltiVec or SPE
10029 // without a warning. If GCC marked files with their stack
10030 // alignment and used don't-care markings for files which are
10031 // not affected by the vector ABI, we could warn about this
10033 else if (in_vec
== 1)
10035 else if (out_vec
== 1)
10038 out_attr
[tag
].set_int_value(out_vec
);
10039 out_attr
[tag
].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL
);
10040 this->last_vec_
= name
;
10042 else if (out_vec
< in_vec
)
10044 err
= N_("%s uses AltiVec vector ABI, %s uses SPE vector ABI");
10045 first
= this->last_vec_
;
10048 else if (out_vec
> in_vec
)
10050 err
= N_("%s uses AltiVec vector ABI, %s uses SPE vector ABI");
10052 second
= this->last_vec_
;
10056 if (parameters
->options().warn_mismatch())
10057 gold_error(_(err
), first
, second
);
10058 out_attr
[tag
].set_type(0);
10062 tag
= elfcpp::Tag_GNU_Power_ABI_Struct_Return
;
10063 int in_struct
= in_attr
[tag
].int_value() & 3;
10064 int out_struct
= out_attr
[tag
].int_value() & 3;
10065 if (in_struct
!= out_struct
)
10068 if (in_struct
== 0 || in_struct
== 3)
10070 else if (out_struct
== 0)
10072 out_struct
= in_struct
;
10073 out_attr
[tag
].set_int_value(out_struct
);
10074 out_attr
[tag
].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL
);
10075 this->last_struct_
= name
;
10077 else if (out_struct
< in_struct
)
10079 err
= N_("%s uses r3/r4 for small structure returns, "
10081 first
= this->last_struct_
;
10084 else if (out_struct
> in_struct
)
10086 err
= N_("%s uses r3/r4 for small structure returns, "
10089 second
= this->last_struct_
;
10093 if (parameters
->options().warn_mismatch())
10094 gold_error(_(err
), first
, second
);
10095 out_attr
[tag
].set_type(0);
10100 // Merge Tag_compatibility attributes and any common GNU ones.
10101 this->attributes_section_data_
->merge(name
, pasd
);
10104 // Emit any saved relocs, and mark toc entries using any of these
10105 // relocs as not optimizable.
10107 template<int sh_type
, int size
, bool big_endian
>
10109 Powerpc_copy_relocs
<sh_type
, size
, big_endian
>::emit(
10110 Output_data_reloc
<sh_type
, true, size
, big_endian
>* reloc_section
)
10113 && parameters
->options().toc_optimize())
10115 for (typename Copy_relocs
<sh_type
, size
, big_endian
>::
10116 Copy_reloc_entries::iterator p
= this->entries_
.begin();
10117 p
!= this->entries_
.end();
10120 typename Copy_relocs
<sh_type
, size
, big_endian
>::Copy_reloc_entry
&
10123 // If the symbol is no longer defined in a dynamic object,
10124 // then we emitted a COPY relocation. If it is still
10125 // dynamic then we'll need dynamic relocations and thus
10126 // can't optimize toc entries.
10127 if (entry
.sym_
->is_from_dynobj())
10129 Powerpc_relobj
<size
, big_endian
>* ppc_object
10130 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(entry
.relobj_
);
10131 if (entry
.shndx_
== ppc_object
->toc_shndx())
10132 ppc_object
->set_no_toc_opt(entry
.address_
);
10137 Copy_relocs
<sh_type
, size
, big_endian
>::emit(reloc_section
);
10140 // Return the value to use for a branch relocation.
10142 template<int size
, bool big_endian
>
10144 Target_powerpc
<size
, big_endian
>::symval_for_branch(
10145 const Symbol_table
* symtab
,
10146 const Sized_symbol
<size
>* gsym
,
10147 Powerpc_relobj
<size
, big_endian
>* object
,
10149 unsigned int *dest_shndx
)
10151 if (size
== 32 || this->abiversion() >= 2)
10152 gold_unreachable();
10155 // If the symbol is defined in an opd section, ie. is a function
10156 // descriptor, use the function descriptor code entry address
10157 Powerpc_relobj
<size
, big_endian
>* symobj
= object
;
10159 && (gsym
->source() != Symbol::FROM_OBJECT
10160 || gsym
->object()->is_dynamic()))
10163 symobj
= static_cast<Powerpc_relobj
<size
, big_endian
>*>(gsym
->object());
10164 unsigned int shndx
= symobj
->opd_shndx();
10167 Address opd_addr
= symobj
->get_output_section_offset(shndx
);
10168 if (opd_addr
== invalid_address
)
10170 opd_addr
+= symobj
->output_section_address(shndx
);
10171 if (*value
>= opd_addr
&& *value
< opd_addr
+ symobj
->section_size(shndx
))
10174 *dest_shndx
= symobj
->get_opd_ent(*value
- opd_addr
, &sec_off
);
10175 if (symtab
->is_section_folded(symobj
, *dest_shndx
))
10178 = symtab
->icf()->get_folded_section(symobj
, *dest_shndx
);
10179 symobj
= static_cast<Powerpc_relobj
<size
, big_endian
>*>(folded
.first
);
10180 *dest_shndx
= folded
.second
;
10182 Address sec_addr
= symobj
->get_output_section_offset(*dest_shndx
);
10183 if (sec_addr
== invalid_address
)
10186 sec_addr
+= symobj
->output_section(*dest_shndx
)->address();
10187 *value
= sec_addr
+ sec_off
;
10194 relative_value_is_known(const Sized_symbol
<size
>* gsym
)
10196 if (gsym
->type() == elfcpp::STT_GNU_IFUNC
)
10199 if (gsym
->is_from_dynobj()
10200 || gsym
->is_undefined()
10201 || gsym
->is_preemptible())
10204 if (gsym
->is_absolute())
10205 return !parameters
->options().output_is_position_independent();
10212 relative_value_is_known(const Symbol_value
<size
>* psymval
)
10214 if (psymval
->is_ifunc_symbol())
10218 unsigned int shndx
= psymval
->input_shndx(&is_ordinary
);
10220 return is_ordinary
&& shndx
!= elfcpp::SHN_UNDEF
;
10223 // PCREL_OPT in one instance flags to the linker that a pair of insns:
10224 // pld ra,symbol@got@pcrel
10225 // load/store rt,0(ra)
10227 // pla ra,symbol@pcrel
10228 // load/store rt,0(ra)
10229 // may be translated to
10230 // pload/pstore rt,symbol@pcrel
10232 // This function returns true if the optimization is possible, placing
10233 // the prefix insn in *PINSN1 and a NOP in *PINSN2.
10235 // On entry to this function, the linker has already determined that
10236 // the pld can be replaced with pla: *PINSN1 is that pla insn,
10237 // while *PINSN2 is the second instruction.
10240 xlate_pcrel_opt(uint64_t *pinsn1
, uint64_t *pinsn2
)
10242 uint32_t insn2
= *pinsn2
>> 32;
10245 // Check that regs match.
10246 if (((insn2
>> 16) & 31) != ((*pinsn1
>> 21) & 31))
10249 switch ((insn2
>> 26) & 63)
10265 // These are the PMLS cases, where we just need to tack a prefix
10266 // on the insn. Check that the D field is zero.
10267 if ((insn2
& 0xffff) != 0)
10269 i1new
= ((1ULL << 58) | (2ULL << 56) | (1ULL << 52)
10270 | (insn2
& ((63ULL << 26) | (31ULL << 21))));
10273 case 58: // lwa, ld
10274 if ((insn2
& 0xfffd) != 0)
10276 i1new
= ((1ULL << 58) | (1ULL << 52)
10277 | (insn2
& 2 ? 41ULL << 26 : 57ULL << 26)
10278 | (insn2
& (31ULL << 21)));
10281 case 57: // lxsd, lxssp
10282 if ((insn2
& 0xfffc) != 0 || (insn2
& 3) < 2)
10284 i1new
= ((1ULL << 58) | (1ULL << 52)
10285 | ((40ULL | (insn2
& 3)) << 26)
10286 | (insn2
& (31ULL << 21)));
10289 case 61: // stxsd, stxssp, lxv, stxv
10290 if ((insn2
& 3) == 0)
10292 else if ((insn2
& 3) >= 2)
10294 if ((insn2
& 0xfffc) != 0)
10296 i1new
= ((1ULL << 58) | (1ULL << 52)
10297 | ((44ULL | (insn2
& 3)) << 26)
10298 | (insn2
& (31ULL << 21)));
10302 if ((insn2
& 0xfff0) != 0)
10304 i1new
= ((1ULL << 58) | (1ULL << 52)
10305 | ((50ULL | (insn2
& 4) | ((insn2
& 8) >> 3)) << 26)
10306 | (insn2
& (31ULL << 21)));
10311 if ((insn2
& 0xffff) != 0)
10313 i1new
= ((1ULL << 58) | (1ULL << 52)
10314 | (insn2
& ((63ULL << 26) | (31ULL << 21))));
10317 case 62: // std, stq
10318 if ((insn2
& 0xfffd) != 0)
10320 i1new
= ((1ULL << 58) | (1ULL << 52)
10321 | ((insn2
& 2) == 0 ? 61ULL << 26 : 60ULL << 26)
10322 | (insn2
& (31ULL << 21)));
10327 *pinsn2
= (uint64_t) nop
<< 32;
10331 // Perform a relocation.
10333 template<int size
, bool big_endian
>
10335 Target_powerpc
<size
, big_endian
>::Relocate::relocate(
10336 const Relocate_info
<size
, big_endian
>* relinfo
,
10338 Target_powerpc
* target
,
10339 Output_section
* os
,
10341 const unsigned char* preloc
,
10342 const Sized_symbol
<size
>* gsym
,
10343 const Symbol_value
<size
>* psymval
,
10344 unsigned char* view
,
10346 section_size_type view_size
)
10348 typedef Powerpc_relocate_functions
<size
, big_endian
> Reloc
;
10349 typedef typename
elfcpp::Swap
<32, big_endian
>::Valtype Insn
;
10350 typedef typename
elfcpp::Rela
<size
, big_endian
> Reltype
;
10355 if (target
->replace_tls_get_addr(gsym
))
10356 gsym
= static_cast<const Sized_symbol
<size
>*>(target
->tls_get_addr_opt());
10358 const elfcpp::Rela
<size
, big_endian
> rela(preloc
);
10359 unsigned int r_type
= elfcpp::elf_r_type
<size
>(rela
.get_r_info());
10360 switch (this->maybe_skip_tls_get_addr_call(target
, r_type
, gsym
))
10362 case Track_tls::NOT_EXPECTED
:
10363 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
10364 _("__tls_get_addr call lacks marker reloc"));
10366 case Track_tls::EXPECTED
:
10367 // We have already complained.
10369 case Track_tls::SKIP
:
10370 if (is_plt16_reloc
<size
>(r_type
)
10371 || r_type
== elfcpp::R_POWERPC_PLTSEQ
10372 || r_type
== elfcpp::R_PPC64_PLTSEQ_NOTOC
)
10374 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
10375 elfcpp::Swap
<32, big_endian
>::writeval(iview
, nop
);
10377 else if (size
== 64 && r_type
== elfcpp::R_POWERPC_PLTCALL
)
10379 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
10380 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1, nop
);
10382 else if (size
== 64 && (r_type
== elfcpp::R_PPC64_PLT_PCREL34
10383 || r_type
== elfcpp::R_PPC64_PLT_PCREL34_NOTOC
))
10385 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
10386 elfcpp::Swap
<32, big_endian
>::writeval(iview
, pnop
>> 32);
10387 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1, pnop
& 0xffffffff);
10390 case Track_tls::NORMAL
:
10394 // Offset from start of insn to d-field reloc.
10395 const int d_offset
= big_endian
? 2 : 0;
10397 Powerpc_relobj
<size
, big_endian
>* const object
10398 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(relinfo
->object
);
10400 bool has_stub_value
= false;
10401 bool localentry0
= false;
10402 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
10403 bool has_plt_offset
10405 ? gsym
->use_plt_offset(Scan::get_reference_flags(r_type
, target
))
10406 : object
->local_has_plt_offset(r_sym
));
10408 && !is_got_reloc(r_type
)
10409 && !is_plt16_reloc
<size
>(r_type
)
10410 && r_type
!= elfcpp::R_PPC64_PLT_PCREL34
10411 && r_type
!= elfcpp::R_PPC64_PLT_PCREL34_NOTOC
10412 && r_type
!= elfcpp::R_POWERPC_PLTSEQ
10413 && r_type
!= elfcpp::R_POWERPC_PLTCALL
10414 && r_type
!= elfcpp::R_PPC64_PLTSEQ_NOTOC
10415 && r_type
!= elfcpp::R_PPC64_PLTCALL_NOTOC
10416 && (!psymval
->is_ifunc_symbol()
10417 || Scan::reloc_needs_plt_for_ifunc(target
, object
, r_type
, false)))
10421 && target
->abiversion() >= 2
10422 && !parameters
->options().output_is_position_independent()
10423 && !is_branch_reloc
<size
>(r_type
))
10425 Address off
= target
->glink_section()->find_global_entry(gsym
);
10426 if (off
!= invalid_address
)
10428 value
= target
->glink_section()->global_entry_address() + off
;
10429 has_stub_value
= true;
10434 Stub_table
<size
, big_endian
>* stub_table
= NULL
;
10435 if (target
->stub_tables().size() == 1)
10436 stub_table
= target
->stub_tables()[0];
10437 if (stub_table
== NULL
10440 && !parameters
->options().output_is_position_independent()
10441 && !is_branch_reloc
<size
>(r_type
)))
10442 stub_table
= object
->stub_table(relinfo
->data_shndx
);
10443 if (stub_table
== NULL
)
10445 // This is a ref from a data section to an ifunc symbol,
10446 // or a non-branch reloc for which we always want to use
10447 // one set of stubs for resolving function addresses.
10448 if (target
->stub_tables().size() != 0)
10449 stub_table
= target
->stub_tables()[0];
10451 if (stub_table
!= NULL
)
10453 const typename Stub_table
<size
, big_endian
>::Plt_stub_ent
* ent
;
10455 ent
= stub_table
->find_plt_call_entry(object
, gsym
, r_type
,
10456 rela
.get_r_addend());
10458 ent
= stub_table
->find_plt_call_entry(object
, r_sym
, r_type
,
10459 rela
.get_r_addend());
10462 value
= stub_table
->stub_address() + ent
->off_
;
10463 const int reloc_size
= elfcpp::Elf_sizes
<size
>::rela_size
;
10464 elfcpp::Shdr
<size
, big_endian
> shdr(relinfo
->reloc_shdr
);
10465 size_t reloc_count
= shdr
.get_sh_size() / reloc_size
;
10467 && r_type
!= elfcpp::R_PPC64_REL24_NOTOC
)
10468 value
+= ent
->tocoff_
;
10472 && target
->is_tls_get_addr_opt(gsym
)))
10474 if (r_type
== elfcpp::R_PPC64_REL24_NOTOC
)
10476 if (!(target
->power10_stubs()
10477 && target
->power10_stubs_auto()))
10480 else if (relnum
< reloc_count
- 1)
10482 Reltype
next_rela(preloc
+ reloc_size
);
10483 if (elfcpp::elf_r_type
<size
>(next_rela
.get_r_info())
10484 == elfcpp::R_PPC64_TOCSAVE
10485 && (next_rela
.get_r_offset()
10486 == rela
.get_r_offset() + 4))
10490 localentry0
= ent
->localentry0_
;
10491 has_stub_value
= true;
10495 // We don't care too much about bogus debug references to
10496 // non-local functions, but otherwise there had better be a plt
10497 // call stub or global entry stub as appropriate.
10498 gold_assert(has_stub_value
|| !(os
->flags() & elfcpp::SHF_ALLOC
));
10501 if (has_plt_offset
&& (is_plt16_reloc
<size
>(r_type
)
10502 || r_type
== elfcpp::R_PPC64_PLT_PCREL34
10503 || r_type
== elfcpp::R_PPC64_PLT_PCREL34_NOTOC
))
10505 const Output_data_plt_powerpc
<size
, big_endian
>* plt
;
10507 value
= target
->plt_off(gsym
, &plt
);
10509 value
= target
->plt_off(object
, r_sym
, &plt
);
10510 value
+= plt
->address();
10514 if (r_type
!= elfcpp::R_PPC64_PLT_PCREL34
10515 && r_type
!= elfcpp::R_PPC64_PLT_PCREL34_NOTOC
)
10516 value
-= (target
->got_section()->output_section()->address()
10517 + object
->toc_base_offset());
10519 else if (parameters
->options().output_is_position_independent())
10521 if (rela
.get_r_addend() >= 32768)
10523 unsigned int got2
= object
->got2_shndx();
10524 value
-= (object
->get_output_section_offset(got2
)
10525 + object
->output_section(got2
)->address()
10526 + rela
.get_r_addend());
10529 value
-= (target
->got_section()->address()
10530 + target
->got_section()->g_o_t());
10533 else if (!has_plt_offset
10534 && (is_plt16_reloc
<size
>(r_type
)
10535 || r_type
== elfcpp::R_POWERPC_PLTSEQ
10536 || r_type
== elfcpp::R_PPC64_PLTSEQ_NOTOC
))
10538 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
10539 elfcpp::Swap
<32, big_endian
>::writeval(iview
, nop
);
10540 r_type
= elfcpp::R_POWERPC_NONE
;
10542 else if (!has_plt_offset
10543 && (r_type
== elfcpp::R_PPC64_PLT_PCREL34
10544 || r_type
== elfcpp::R_PPC64_PLT_PCREL34_NOTOC
))
10546 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
10547 elfcpp::Swap
<32, big_endian
>::writeval(iview
, pnop
>> 32);
10548 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1, pnop
& 0xffffffff);
10549 r_type
= elfcpp::R_POWERPC_NONE
;
10551 else if (is_got_reloc(r_type
))
10555 gold_assert(gsym
->has_got_offset(GOT_TYPE_STANDARD
));
10556 value
= gsym
->got_offset(GOT_TYPE_STANDARD
);
10560 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_STANDARD
));
10561 value
= object
->local_got_offset(r_sym
, GOT_TYPE_STANDARD
);
10563 if (r_type
== elfcpp::R_PPC64_GOT_PCREL34
)
10564 value
+= target
->got_section()->address();
10566 value
-= target
->got_section()->got_base_offset(object
);
10568 else if (r_type
== elfcpp::R_PPC64_TOC
)
10570 value
= (target
->got_section()->output_section()->address()
10571 + object
->toc_base_offset());
10573 else if (gsym
!= NULL
10574 && (r_type
== elfcpp::R_POWERPC_REL24
10575 || r_type
== elfcpp::R_PPC_PLTREL24
)
10580 typedef typename
elfcpp::Swap
<32, big_endian
>::Valtype Valtype
;
10581 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
10582 bool can_plt_call
= localentry0
|| target
->is_tls_get_addr_opt(gsym
);
10583 if (!can_plt_call
&& rela
.get_r_offset() + 8 <= view_size
)
10585 Valtype insn
= elfcpp::Swap
<32, big_endian
>::readval(wv
);
10586 Valtype insn2
= elfcpp::Swap
<32, big_endian
>::readval(wv
+ 1);
10587 if ((insn
& 1) != 0
10589 || insn2
== cror_15_15_15
|| insn2
== cror_31_31_31
))
10591 elfcpp::Swap
<32, big_endian
>::
10592 writeval(wv
+ 1, ld_2_1
+ target
->stk_toc());
10593 can_plt_call
= true;
10598 // If we don't have a branch and link followed by a nop,
10599 // we can't go via the plt because there is no place to
10600 // put a toc restoring instruction.
10601 // Unless we know we won't be returning.
10602 if (strcmp(gsym
->name(), "__libc_start_main") == 0)
10603 can_plt_call
= true;
10607 // g++ as of 20130507 emits self-calls without a
10608 // following nop. This is arguably wrong since we have
10609 // conflicting information. On the one hand a global
10610 // symbol and on the other a local call sequence, but
10611 // don't error for this special case.
10612 // It isn't possible to cheaply verify we have exactly
10613 // such a call. Allow all calls to the same section.
10615 Address code
= value
;
10616 if (gsym
->source() == Symbol::FROM_OBJECT
10617 && gsym
->object() == object
)
10619 unsigned int dest_shndx
= 0;
10620 if (target
->abiversion() < 2)
10622 Address addend
= rela
.get_r_addend();
10623 code
= psymval
->value(object
, addend
);
10624 target
->symval_for_branch(relinfo
->symtab
, gsym
, object
,
10625 &code
, &dest_shndx
);
10628 if (dest_shndx
== 0)
10629 dest_shndx
= gsym
->shndx(&is_ordinary
);
10630 ok
= dest_shndx
== relinfo
->data_shndx
;
10634 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
10635 _("call lacks nop, can't restore toc; "
10636 "recompile with -fPIC"));
10642 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
10643 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
10644 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HI
10645 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HA
10646 || r_type
== elfcpp::R_PPC64_GOT_TLSGD_PCREL34
)
10648 // First instruction of a global dynamic sequence, arg setup insn.
10649 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
10650 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
10651 enum Got_type got_type
= GOT_TYPE_STANDARD
;
10652 if (tls_type
== tls::TLSOPT_NONE
)
10653 got_type
= GOT_TYPE_TLSGD
;
10654 else if (tls_type
== tls::TLSOPT_TO_IE
)
10655 got_type
= GOT_TYPE_TPREL
;
10656 if (got_type
!= GOT_TYPE_STANDARD
)
10660 gold_assert(gsym
->has_got_offset(got_type
));
10661 value
= gsym
->got_offset(got_type
);
10665 gold_assert(object
->local_has_got_offset(r_sym
, got_type
));
10666 value
= object
->local_got_offset(r_sym
, got_type
);
10668 if (r_type
== elfcpp::R_PPC64_GOT_TLSGD_PCREL34
)
10669 value
+= target
->got_section()->address();
10671 value
-= target
->got_section()->got_base_offset(object
);
10673 if (tls_type
== tls::TLSOPT_TO_IE
)
10675 if (r_type
== elfcpp::R_PPC64_GOT_TLSGD_PCREL34
)
10677 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
10678 uint64_t pinsn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
10680 pinsn
|= elfcpp::Swap
<32, big_endian
>::readval(iview
+ 1);
10682 pinsn
+= (-2ULL << 56) + (57ULL << 26) - (14ULL << 26);
10683 elfcpp::Swap
<32, big_endian
>::writeval(iview
, pinsn
>> 32);
10684 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1,
10685 pinsn
& 0xffffffff);
10686 r_type
= elfcpp::R_PPC64_GOT_TPREL_PCREL34
;
10690 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
10691 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
10693 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
10694 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
10695 insn
&= (1 << 26) - (1 << 16); // extract rt,ra from addi
10697 insn
|= 32 << 26; // lwz
10699 insn
|= 58 << 26; // ld
10700 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
10702 r_type
+= (elfcpp::R_POWERPC_GOT_TPREL16
10703 - elfcpp::R_POWERPC_GOT_TLSGD16
);
10706 else if (tls_type
== tls::TLSOPT_TO_LE
)
10708 if (r_type
== elfcpp::R_PPC64_GOT_TLSGD_PCREL34
)
10710 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
10711 uint64_t pinsn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
10713 pinsn
|= elfcpp::Swap
<32, big_endian
>::readval(iview
+ 1);
10714 // pla pcrel -> paddi r13
10715 pinsn
+= (-1ULL << 52) + (13ULL << 16);
10716 elfcpp::Swap
<32, big_endian
>::writeval(iview
, pinsn
>> 32);
10717 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1,
10718 pinsn
& 0xffffffff);
10719 r_type
= elfcpp::R_PPC64_TPREL34
;
10720 value
= psymval
->value(object
, rela
.get_r_addend());
10724 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
10725 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
10727 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
10728 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
10729 insn
&= (1 << 26) - (1 << 21); // extract rt
10733 insn
|= addis_0_13
;
10734 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
10735 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
10736 value
= psymval
->value(object
, rela
.get_r_addend());
10740 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
10742 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
10743 r_type
= elfcpp::R_POWERPC_NONE
;
10748 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
10749 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
10750 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HI
10751 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HA
10752 || r_type
== elfcpp::R_PPC64_GOT_TLSLD_PCREL34
)
10754 // First instruction of a local dynamic sequence, arg setup insn.
10755 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
10756 if (tls_type
== tls::TLSOPT_NONE
)
10758 value
= target
->tlsld_got_offset();
10759 if (r_type
== elfcpp::R_PPC64_GOT_TLSLD_PCREL34
)
10760 value
+= target
->got_section()->address();
10762 value
-= target
->got_section()->got_base_offset(object
);
10766 gold_assert(tls_type
== tls::TLSOPT_TO_LE
);
10767 if (r_type
== elfcpp::R_PPC64_GOT_TLSLD_PCREL34
)
10769 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
10770 uint64_t pinsn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
10772 pinsn
|= elfcpp::Swap
<32, big_endian
>::readval(iview
+ 1);
10773 // pla pcrel -> paddi r13
10774 pinsn
+= (-1ULL << 52) + (13ULL << 16);
10775 elfcpp::Swap
<32, big_endian
>::writeval(iview
, pinsn
>> 32);
10776 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1,
10777 pinsn
& 0xffffffff);
10778 r_type
= elfcpp::R_PPC64_TPREL34
;
10779 value
= dtp_offset
;
10781 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
10782 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
)
10784 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
10785 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
10786 insn
&= (1 << 26) - (1 << 21); // extract rt
10790 insn
|= addis_0_13
;
10791 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
10792 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
10793 value
= dtp_offset
;
10797 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
10799 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
10800 r_type
= elfcpp::R_POWERPC_NONE
;
10804 else if (r_type
== elfcpp::R_POWERPC_GOT_DTPREL16
10805 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_LO
10806 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_HI
10807 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_HA
10808 || r_type
== elfcpp::R_PPC64_GOT_DTPREL_PCREL34
)
10810 // Accesses relative to a local dynamic sequence address,
10811 // no optimisation here.
10814 gold_assert(gsym
->has_got_offset(GOT_TYPE_DTPREL
));
10815 value
= gsym
->got_offset(GOT_TYPE_DTPREL
);
10819 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_DTPREL
));
10820 value
= object
->local_got_offset(r_sym
, GOT_TYPE_DTPREL
);
10822 if (r_type
== elfcpp::R_PPC64_GOT_DTPREL_PCREL34
)
10823 value
+= target
->got_section()->address();
10825 value
-= target
->got_section()->got_base_offset(object
);
10827 else if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
10828 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
10829 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HI
10830 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HA
10831 || r_type
== elfcpp::R_PPC64_GOT_TPREL_PCREL34
)
10833 // First instruction of initial exec sequence.
10834 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
10835 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
10836 if (tls_type
== tls::TLSOPT_NONE
)
10840 gold_assert(gsym
->has_got_offset(GOT_TYPE_TPREL
));
10841 value
= gsym
->got_offset(GOT_TYPE_TPREL
);
10845 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_TPREL
));
10846 value
= object
->local_got_offset(r_sym
, GOT_TYPE_TPREL
);
10848 if (r_type
== elfcpp::R_PPC64_GOT_TPREL_PCREL34
)
10849 value
+= target
->got_section()->address();
10851 value
-= target
->got_section()->got_base_offset(object
);
10855 gold_assert(tls_type
== tls::TLSOPT_TO_LE
);
10856 if (r_type
== elfcpp::R_PPC64_GOT_TPREL_PCREL34
)
10858 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
10859 uint64_t pinsn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
10861 pinsn
|= elfcpp::Swap
<32, big_endian
>::readval(iview
+ 1);
10862 // pld ra,sym@got@tprel@pcrel -> paddi ra,r13,sym@tprel
10863 pinsn
+= ((2ULL << 56) + (-1ULL << 52)
10864 + (14ULL << 26) - (57ULL << 26) + (13ULL << 16));
10865 elfcpp::Swap
<32, big_endian
>::writeval(iview
, pinsn
>> 32);
10866 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1,
10867 pinsn
& 0xffffffff);
10868 r_type
= elfcpp::R_PPC64_TPREL34
;
10869 value
= psymval
->value(object
, rela
.get_r_addend());
10871 else if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
10872 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
)
10874 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
10875 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
10876 insn
&= (1 << 26) - (1 << 21); // extract rt from ld
10880 insn
|= addis_0_13
;
10881 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
10882 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
10883 value
= psymval
->value(object
, rela
.get_r_addend());
10887 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
10889 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
10890 r_type
= elfcpp::R_POWERPC_NONE
;
10894 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
10895 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
10897 // Second instruction of a global dynamic sequence,
10898 // the __tls_get_addr call
10899 this->expect_tls_get_addr_call(relinfo
, relnum
, rela
.get_r_offset());
10900 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
10901 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
10902 if (tls_type
!= tls::TLSOPT_NONE
)
10904 if (tls_type
== tls::TLSOPT_TO_IE
)
10906 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
10907 Insn insn
= add_3_3_13
;
10910 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
10911 r_type
= elfcpp::R_POWERPC_NONE
;
10915 bool is_pcrel
= false;
10916 const int reloc_size
= elfcpp::Elf_sizes
<size
>::rela_size
;
10917 elfcpp::Shdr
<size
, big_endian
> shdr(relinfo
->reloc_shdr
);
10918 size_t reloc_count
= shdr
.get_sh_size() / reloc_size
;
10919 if (relnum
< reloc_count
- 1)
10921 Reltype
next_rela(preloc
+ reloc_size
);
10922 unsigned int r_type2
10923 = elfcpp::elf_r_type
<size
>(next_rela
.get_r_info());
10924 if ((r_type2
== elfcpp::R_PPC64_REL24_NOTOC
10925 || r_type2
== elfcpp::R_PPC64_PLTCALL_NOTOC
)
10926 && next_rela
.get_r_offset() == rela
.get_r_offset())
10929 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
10932 elfcpp::Swap
<32, big_endian
>::writeval(iview
, nop
);
10933 r_type
= elfcpp::R_POWERPC_NONE
;
10937 elfcpp::Swap
<32, big_endian
>::writeval(iview
, addi_3_3
);
10938 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
10940 value
= psymval
->value(object
, rela
.get_r_addend());
10943 this->skip_next_tls_get_addr_call();
10946 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
10947 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
10949 // Second instruction of a local dynamic sequence,
10950 // the __tls_get_addr call
10951 this->expect_tls_get_addr_call(relinfo
, relnum
, rela
.get_r_offset());
10952 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
10953 if (tls_type
== tls::TLSOPT_TO_LE
)
10955 bool is_pcrel
= false;
10956 const int reloc_size
= elfcpp::Elf_sizes
<size
>::rela_size
;
10957 elfcpp::Shdr
<size
, big_endian
> shdr(relinfo
->reloc_shdr
);
10958 size_t reloc_count
= shdr
.get_sh_size() / reloc_size
;
10959 if (relnum
< reloc_count
- 1)
10961 Reltype
next_rela(preloc
+ reloc_size
);
10962 unsigned int r_type2
10963 = elfcpp::elf_r_type
<size
>(next_rela
.get_r_info());
10964 if ((r_type2
== elfcpp::R_PPC64_REL24_NOTOC
10965 || r_type2
== elfcpp::R_PPC64_PLTCALL_NOTOC
)
10966 && next_rela
.get_r_offset() == rela
.get_r_offset())
10969 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
10972 elfcpp::Swap
<32, big_endian
>::writeval(iview
, nop
);
10973 r_type
= elfcpp::R_POWERPC_NONE
;
10977 elfcpp::Swap
<32, big_endian
>::writeval(iview
, addi_3_3
);
10978 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
10980 value
= dtp_offset
;
10982 this->skip_next_tls_get_addr_call();
10985 else if (r_type
== elfcpp::R_POWERPC_TLS
)
10987 // Second instruction of an initial exec sequence
10988 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
10989 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
10990 if (tls_type
== tls::TLSOPT_TO_LE
)
10992 Address roff
= rela
.get_r_offset() & 3;
10993 Insn
* iview
= reinterpret_cast<Insn
*>(view
- roff
);
10994 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
10995 unsigned int reg
= size
== 32 ? 2 : 13;
10996 insn
= at_tls_transform(insn
, reg
);
10997 gold_assert(insn
!= 0);
11000 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
11001 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
11003 value
= psymval
->value(object
, rela
.get_r_addend());
11005 else if (roff
== 1)
11007 // For pcrel IE to LE we already have the full offset
11008 // and thus don't need an addi here. A nop or mr will do.
11009 if ((insn
& (0x3f << 26)) == 14 << 26)
11011 // Extract regs from addi rt,ra,si.
11012 unsigned int rt
= (insn
>> 21) & 0x1f;
11013 unsigned int ra
= (insn
>> 16) & 0x1f;
11018 // Build or ra,rs,rb with rb==rs, ie. mr ra,rs.
11019 insn
= (rt
<< 16) | (ra
<< 21) | (ra
<< 11);
11020 insn
|= (31u << 26) | (444u << 1);
11023 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
11024 r_type
= elfcpp::R_POWERPC_NONE
;
11028 else if (!has_stub_value
)
11030 if (!has_plt_offset
&& (r_type
== elfcpp::R_POWERPC_PLTCALL
11031 || r_type
== elfcpp::R_PPC64_PLTCALL_NOTOC
))
11033 // PLTCALL without plt entry => convert to direct call
11034 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
11035 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11036 insn
= (insn
& 1) | b
;
11037 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
11039 r_type
= elfcpp::R_PPC_PLTREL24
;
11040 else if (r_type
== elfcpp::R_PPC64_PLTCALL_NOTOC
)
11041 r_type
= elfcpp::R_PPC64_REL24_NOTOC
;
11043 r_type
= elfcpp::R_POWERPC_REL24
;
11045 Address addend
= 0;
11047 && (r_type
== elfcpp::R_PPC_PLTREL24
11048 || r_type
== elfcpp::R_POWERPC_PLT16_LO
11049 || r_type
== elfcpp::R_POWERPC_PLT16_HI
11050 || r_type
== elfcpp::R_POWERPC_PLT16_HA
)))
11051 addend
= rela
.get_r_addend();
11052 value
= psymval
->value(object
, addend
);
11053 unsigned int local_ent
= 0;
11054 if (size
== 64 && is_branch_reloc
<size
>(r_type
))
11056 if (target
->abiversion() >= 2)
11059 local_ent
= object
->ppc64_local_entry_offset(gsym
);
11061 local_ent
= object
->ppc64_local_entry_offset(r_sym
);
11065 unsigned int dest_shndx
;
11066 target
->symval_for_branch(relinfo
->symtab
, gsym
, object
,
11067 &value
, &dest_shndx
);
11070 Address max_branch
= max_branch_delta
<size
>(r_type
);
11071 if (max_branch
!= 0
11072 && (value
+ local_ent
- address
+ max_branch
>= 2 * max_branch
11074 && r_type
== elfcpp::R_PPC64_REL24_NOTOC
11076 ? object
->ppc64_needs_toc(gsym
)
11077 : object
->ppc64_needs_toc(r_sym
)))))
11079 Stub_table
<size
, big_endian
>* stub_table
11080 = object
->stub_table(relinfo
->data_shndx
);
11081 if (stub_table
!= NULL
)
11083 const typename Stub_table
<size
, big_endian
>::Branch_stub_ent
* ent
11084 = stub_table
->find_long_branch_entry(object
, value
);
11087 if (ent
->save_res_
)
11088 value
= (value
- target
->savres_section()->address()
11089 + stub_table
->branch_size());
11092 value
= (stub_table
->stub_address()
11093 + stub_table
->plt_size()
11096 && r_type
!= elfcpp::R_PPC64_REL24_NOTOC
)
11097 value
+= (elfcpp::ppc64_decode_local_entry(ent
->other_
)
11100 has_stub_value
= true;
11104 if (!has_stub_value
)
11105 value
+= local_ent
;
11110 case elfcpp::R_PPC64_REL24_NOTOC
:
11114 case elfcpp::R_PPC64_REL64
:
11115 case elfcpp::R_POWERPC_REL32
:
11116 case elfcpp::R_POWERPC_REL24
:
11117 case elfcpp::R_PPC_PLTREL24
:
11118 case elfcpp::R_PPC_LOCAL24PC
:
11119 case elfcpp::R_POWERPC_REL16
:
11120 case elfcpp::R_POWERPC_REL16_LO
:
11121 case elfcpp::R_POWERPC_REL16_HI
:
11122 case elfcpp::R_POWERPC_REL16_HA
:
11123 case elfcpp::R_POWERPC_REL16DX_HA
:
11124 case elfcpp::R_PPC64_REL16_HIGH
:
11125 case elfcpp::R_PPC64_REL16_HIGHA
:
11126 case elfcpp::R_PPC64_REL16_HIGHER
:
11127 case elfcpp::R_PPC64_REL16_HIGHERA
:
11128 case elfcpp::R_PPC64_REL16_HIGHEST
:
11129 case elfcpp::R_PPC64_REL16_HIGHESTA
:
11130 case elfcpp::R_POWERPC_REL14
:
11131 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
11132 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
11133 case elfcpp::R_PPC64_PCREL34
:
11134 case elfcpp::R_PPC64_GOT_PCREL34
:
11135 case elfcpp::R_PPC64_PLT_PCREL34
:
11136 case elfcpp::R_PPC64_PLT_PCREL34_NOTOC
:
11137 case elfcpp::R_PPC64_PCREL28
:
11138 case elfcpp::R_PPC64_GOT_TLSGD_PCREL34
:
11139 case elfcpp::R_PPC64_GOT_TLSLD_PCREL34
:
11140 case elfcpp::R_PPC64_GOT_TPREL_PCREL34
:
11141 case elfcpp::R_PPC64_GOT_DTPREL_PCREL34
:
11142 case elfcpp::R_PPC64_REL16_HIGHER34
:
11143 case elfcpp::R_PPC64_REL16_HIGHERA34
:
11144 case elfcpp::R_PPC64_REL16_HIGHEST34
:
11145 case elfcpp::R_PPC64_REL16_HIGHESTA34
:
11149 case elfcpp::R_PPC64_TOC16
:
11150 case elfcpp::R_PPC64_TOC16_LO
:
11151 case elfcpp::R_PPC64_TOC16_HI
:
11152 case elfcpp::R_PPC64_TOC16_HA
:
11153 case elfcpp::R_PPC64_TOC16_DS
:
11154 case elfcpp::R_PPC64_TOC16_LO_DS
:
11155 // Subtract the TOC base address.
11156 value
-= (target
->got_section()->output_section()->address()
11157 + object
->toc_base_offset());
11160 case elfcpp::R_POWERPC_SECTOFF
:
11161 case elfcpp::R_POWERPC_SECTOFF_LO
:
11162 case elfcpp::R_POWERPC_SECTOFF_HI
:
11163 case elfcpp::R_POWERPC_SECTOFF_HA
:
11164 case elfcpp::R_PPC64_SECTOFF_DS
:
11165 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
11167 value
-= os
->address();
11170 case elfcpp::R_PPC64_TPREL16_DS
:
11171 case elfcpp::R_PPC64_TPREL16_LO_DS
:
11172 case elfcpp::R_PPC64_TPREL16_HIGH
:
11173 case elfcpp::R_PPC64_TPREL16_HIGHA
:
11175 // R_PPC_TLSGD, R_PPC_TLSLD, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HI
11178 case elfcpp::R_POWERPC_TPREL16
:
11179 case elfcpp::R_POWERPC_TPREL16_LO
:
11180 case elfcpp::R_POWERPC_TPREL16_HI
:
11181 case elfcpp::R_POWERPC_TPREL16_HA
:
11182 case elfcpp::R_POWERPC_TPREL
:
11183 case elfcpp::R_PPC64_TPREL16_HIGHER
:
11184 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
11185 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
11186 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
11187 case elfcpp::R_PPC64_TPREL34
:
11188 // tls symbol values are relative to tls_segment()->vaddr()
11189 value
-= tp_offset
;
11192 case elfcpp::R_PPC64_DTPREL16_DS
:
11193 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
11194 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
11195 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
11196 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
11197 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
11199 // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO
11200 // R_PPC_EMB_NADDR16_HI, R_PPC_EMB_NADDR16_HA, R_PPC_EMB_SDAI16
11203 case elfcpp::R_POWERPC_DTPREL16
:
11204 case elfcpp::R_POWERPC_DTPREL16_LO
:
11205 case elfcpp::R_POWERPC_DTPREL16_HI
:
11206 case elfcpp::R_POWERPC_DTPREL16_HA
:
11207 case elfcpp::R_POWERPC_DTPREL
:
11208 case elfcpp::R_PPC64_DTPREL16_HIGH
:
11209 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
11210 case elfcpp::R_PPC64_DTPREL34
:
11211 // tls symbol values are relative to tls_segment()->vaddr()
11212 value
-= dtp_offset
;
11215 case elfcpp::R_PPC64_ADDR64_LOCAL
:
11217 value
+= object
->ppc64_local_entry_offset(gsym
);
11219 value
+= object
->ppc64_local_entry_offset(r_sym
);
11226 Insn branch_bit
= 0;
11229 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
11230 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
11231 branch_bit
= 1 << 21;
11233 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
11234 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
11236 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
11237 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11238 insn
&= ~(1 << 21);
11239 insn
|= branch_bit
;
11240 if (this->is_isa_v2
)
11242 // Set 'a' bit. This is 0b00010 in BO field for branch
11243 // on CR(BI) insns (BO == 001at or 011at), and 0b01000
11244 // for branch on CTR insns (BO == 1a00t or 1a01t).
11245 if ((insn
& (0x14 << 21)) == (0x04 << 21))
11246 insn
|= 0x02 << 21;
11247 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
11248 insn
|= 0x08 << 21;
11254 // Invert 'y' bit if not the default.
11255 if (static_cast<Signed_address
>(value
) < 0)
11258 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
11262 case elfcpp::R_POWERPC_PLT16_HA
:
11264 && !parameters
->options().output_is_position_independent())
11266 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
11267 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11269 // Convert addis to lis.
11270 if ((insn
& (0x3f << 26)) == 15u << 26
11271 && (insn
& (0x1f << 16)) != 0)
11273 insn
&= ~(0x1f << 16);
11274 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
11284 ? relative_value_is_known(gsym
)
11285 : relative_value_is_known(psymval
))
11290 uint64_t pinsn
, pinsn2
;
11297 // Multi-instruction sequences that access the GOT/TOC can
11298 // be optimized, eg.
11299 // addis ra,r2,x@got@ha; ld rb,x@got@l(ra);
11300 // to addis ra,r2,x@toc@ha; addi rb,ra,x@toc@l;
11302 // addis ra,r2,0; addi rb,ra,x@toc@l;
11303 // to nop; addi rb,r2,x@toc;
11304 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
11305 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
11306 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
11307 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
11308 case elfcpp::R_POWERPC_GOT16_HA
:
11309 case elfcpp::R_PPC64_TOC16_HA
:
11310 if (size
== 64 && parameters
->options().toc_optimize())
11312 iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
11313 insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11314 if ((r_type
== elfcpp::R_PPC64_TOC16_HA
11315 && object
->make_toc_relative(target
, &value
))
11316 || (r_type
== elfcpp::R_POWERPC_GOT16_HA
11317 && object
->make_got_relative(target
, psymval
,
11318 rela
.get_r_addend(),
11321 gold_assert((insn
& ((0x3f << 26) | 0x1f << 16))
11322 == ((15u << 26) | (2 << 16)));
11324 if (((insn
& ((0x3f << 26) | 0x1f << 16))
11325 == ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
11326 && value
+ 0x8000 < 0x10000)
11328 elfcpp::Swap
<32, big_endian
>::writeval(iview
, nop
);
11334 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
11335 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
11336 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
11337 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
11338 case elfcpp::R_POWERPC_GOT16_LO
:
11339 case elfcpp::R_PPC64_GOT16_LO_DS
:
11340 case elfcpp::R_PPC64_TOC16_LO
:
11341 case elfcpp::R_PPC64_TOC16_LO_DS
:
11342 if (size
== 64 && parameters
->options().toc_optimize())
11344 iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
11345 insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11346 bool changed
= false;
11347 if ((r_type
== elfcpp::R_PPC64_TOC16_LO_DS
11348 && object
->make_toc_relative(target
, &value
))
11349 || (r_type
== elfcpp::R_PPC64_GOT16_LO_DS
11350 && object
->make_got_relative(target
, psymval
,
11351 rela
.get_r_addend(),
11354 gold_assert ((insn
& (0x3f << 26)) == 58u << 26 /* ld */);
11355 insn
^= (14u << 26) ^ (58u << 26);
11356 r_type
= elfcpp::R_PPC64_TOC16_LO
;
11359 if (ok_lo_toc_insn(insn
, r_type
)
11360 && value
+ 0x8000 < 0x10000)
11362 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
11364 // Transform addic to addi when we change reg.
11365 insn
&= ~((0x3f << 26) | (0x1f << 16));
11366 insn
|= (14u << 26) | (2 << 16);
11370 insn
&= ~(0x1f << 16);
11376 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
11380 case elfcpp::R_PPC64_GOT_PCREL34
:
11381 if (size
== 64 && parameters
->options().toc_optimize())
11383 iview
= reinterpret_cast<Insn
*>(view
);
11384 pinsn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11386 pinsn
|= elfcpp::Swap
<32, big_endian
>::readval(iview
+ 1);
11387 if ((pinsn
& ((-1ULL << 50) | (63ULL << 26)))
11388 != ((1ULL << 58) | (1ULL << 52) | (57ULL << 26) /* pld */))
11391 Address relval
= psymval
->value(object
, rela
.get_r_addend());
11393 if (relval
+ (1ULL << 33) < 1ULL << 34)
11396 // Replace with paddi
11397 pinsn
+= (2ULL << 56) + (14ULL << 26) - (57ULL << 26);
11398 elfcpp::Swap
<32, big_endian
>::writeval(iview
, pinsn
>> 32);
11399 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1,
11400 pinsn
& 0xffffffff);
11406 case elfcpp::R_PPC64_PCREL34
:
11409 iview
= reinterpret_cast<Insn
*>(view
);
11410 pinsn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11412 pinsn
|= elfcpp::Swap
<32, big_endian
>::readval(iview
+ 1);
11413 if ((pinsn
& ((-1ULL << 50) | (63ULL << 26)))
11414 != ((1ULL << 58) | (2ULL << 56) | (1ULL << 52)
11415 | (14ULL << 26) /* paddi */))
11419 const int reloc_size
= elfcpp::Elf_sizes
<size
>::rela_size
;
11420 elfcpp::Shdr
<size
, big_endian
> shdr(relinfo
->reloc_shdr
);
11421 size_t reloc_count
= shdr
.get_sh_size() / reloc_size
;
11422 if (relnum
>= reloc_count
- 1)
11425 Reltype
next_rela(preloc
+ reloc_size
);
11426 if ((elfcpp::elf_r_type
<size
>(next_rela
.get_r_info())
11427 != elfcpp::R_PPC64_PCREL_OPT
)
11428 || next_rela
.get_r_offset() != rela
.get_r_offset())
11431 Address off
= next_rela
.get_r_addend();
11433 off
= 8; // zero means next insn.
11434 if (off
+ rela
.get_r_offset() + 4 > view_size
)
11437 iview2
= reinterpret_cast<Insn
*>(view
+ off
);
11438 pinsn2
= elfcpp::Swap
<32, big_endian
>::readval(iview2
);
11440 if ((pinsn2
& (63ULL << 58)) == 1ULL << 58)
11442 if (xlate_pcrel_opt(&pinsn
, &pinsn2
))
11444 elfcpp::Swap
<32, big_endian
>::writeval(iview
, pinsn
>> 32);
11445 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1,
11446 pinsn
& 0xffffffff);
11447 elfcpp::Swap
<32, big_endian
>::writeval(iview2
, pinsn2
>> 32);
11452 case elfcpp::R_POWERPC_TPREL16_HA
:
11453 if (target
->tprel_opt() && value
+ 0x8000 < 0x10000)
11455 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
11456 elfcpp::Swap
<32, big_endian
>::writeval(iview
, nop
);
11461 case elfcpp::R_PPC64_TPREL16_LO_DS
:
11463 // R_PPC_TLSGD, R_PPC_TLSLD
11466 case elfcpp::R_POWERPC_TPREL16_LO
:
11467 if (target
->tprel_opt() && value
+ 0x8000 < 0x10000)
11469 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
11470 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11471 insn
&= ~(0x1f << 16);
11472 insn
|= (size
== 32 ? 2 : 13) << 16;
11473 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
11477 case elfcpp::R_PPC64_ENTRY
:
11480 value
= (target
->got_section()->output_section()->address()
11481 + object
->toc_base_offset());
11482 if (value
+ 0x80008000 <= 0xffffffff
11483 && !parameters
->options().output_is_position_independent())
11485 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
11486 Insn insn1
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11487 Insn insn2
= elfcpp::Swap
<32, big_endian
>::readval(iview
+ 1);
11489 if ((insn1
& ~0xfffc) == ld_2_12
11490 && insn2
== add_2_2_12
)
11492 insn1
= lis_2
+ ha(value
);
11493 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn1
);
11494 insn2
= addi_2_2
+ l(value
);
11495 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1, insn2
);
11502 if (value
+ 0x80008000 <= 0xffffffff)
11504 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
11505 Insn insn1
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11506 Insn insn2
= elfcpp::Swap
<32, big_endian
>::readval(iview
+ 1);
11508 if ((insn1
& ~0xfffc) == ld_2_12
11509 && insn2
== add_2_2_12
)
11511 insn1
= addis_2_12
+ ha(value
);
11512 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn1
);
11513 insn2
= addi_2_2
+ l(value
);
11514 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1, insn2
);
11522 case elfcpp::R_POWERPC_REL16_LO
:
11523 // If we are generating a non-PIC executable, edit
11524 // 0: addis 2,12,.TOC.-0b@ha
11525 // addi 2,2,.TOC.-0b@l
11526 // used by ELFv2 global entry points to set up r2, to
11528 // addi 2,2,.TOC.@l
11529 // if .TOC. is in range. */
11531 && value
+ address
- 4 + 0x80008000 <= 0xffffffff
11534 && target
->abiversion() >= 2
11535 && !parameters
->options().output_is_position_independent()
11536 && rela
.get_r_addend() == d_offset
+ 4
11538 && strcmp(gsym
->name(), ".TOC.") == 0)
11540 const int reloc_size
= elfcpp::Elf_sizes
<size
>::rela_size
;
11541 Reltype
prev_rela(preloc
- reloc_size
);
11542 if ((prev_rela
.get_r_info()
11543 == elfcpp::elf_r_info
<size
>(r_sym
,
11544 elfcpp::R_POWERPC_REL16_HA
))
11545 && prev_rela
.get_r_offset() + 4 == rela
.get_r_offset()
11546 && prev_rela
.get_r_addend() + 4 == rela
.get_r_addend())
11548 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
11549 Insn insn1
= elfcpp::Swap
<32, big_endian
>::readval(iview
- 1);
11550 Insn insn2
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11552 if ((insn1
& 0xffff0000) == addis_2_12
11553 && (insn2
& 0xffff0000) == addi_2_2
)
11555 insn1
= lis_2
+ ha(value
+ address
- 4);
11556 elfcpp::Swap
<32, big_endian
>::writeval(iview
- 1, insn1
);
11557 insn2
= addi_2_2
+ l(value
+ address
- 4);
11558 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn2
);
11561 relinfo
->rr
->set_strategy(relnum
- 1,
11562 Relocatable_relocs::RELOC_SPECIAL
);
11563 relinfo
->rr
->set_strategy(relnum
,
11564 Relocatable_relocs::RELOC_SPECIAL
);
11574 typename
Reloc::Overflow_check overflow
= Reloc::CHECK_NONE
;
11575 elfcpp::Shdr
<size
, big_endian
> shdr(relinfo
->data_shdr
);
11578 case elfcpp::R_POWERPC_ADDR32
:
11579 case elfcpp::R_POWERPC_UADDR32
:
11581 overflow
= Reloc::CHECK_BITFIELD
;
11584 case elfcpp::R_POWERPC_REL32
:
11585 case elfcpp::R_POWERPC_REL16DX_HA
:
11587 overflow
= Reloc::CHECK_SIGNED
;
11590 case elfcpp::R_POWERPC_UADDR16
:
11591 overflow
= Reloc::CHECK_BITFIELD
;
11594 case elfcpp::R_POWERPC_ADDR16
:
11595 // We really should have three separate relocations,
11596 // one for 16-bit data, one for insns with 16-bit signed fields,
11597 // and one for insns with 16-bit unsigned fields.
11598 overflow
= Reloc::CHECK_BITFIELD
;
11599 if ((shdr
.get_sh_flags() & elfcpp::SHF_EXECINSTR
) != 0)
11600 overflow
= Reloc::CHECK_LOW_INSN
;
11603 case elfcpp::R_POWERPC_ADDR16_HI
:
11604 case elfcpp::R_POWERPC_ADDR16_HA
:
11605 case elfcpp::R_POWERPC_GOT16_HI
:
11606 case elfcpp::R_POWERPC_GOT16_HA
:
11607 case elfcpp::R_POWERPC_PLT16_HI
:
11608 case elfcpp::R_POWERPC_PLT16_HA
:
11609 case elfcpp::R_POWERPC_SECTOFF_HI
:
11610 case elfcpp::R_POWERPC_SECTOFF_HA
:
11611 case elfcpp::R_PPC64_TOC16_HI
:
11612 case elfcpp::R_PPC64_TOC16_HA
:
11613 case elfcpp::R_PPC64_PLTGOT16_HI
:
11614 case elfcpp::R_PPC64_PLTGOT16_HA
:
11615 case elfcpp::R_POWERPC_TPREL16_HI
:
11616 case elfcpp::R_POWERPC_TPREL16_HA
:
11617 case elfcpp::R_POWERPC_DTPREL16_HI
:
11618 case elfcpp::R_POWERPC_DTPREL16_HA
:
11619 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
11620 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
11621 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
11622 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
11623 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
11624 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
11625 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
11626 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
11627 case elfcpp::R_POWERPC_REL16_HI
:
11628 case elfcpp::R_POWERPC_REL16_HA
:
11630 overflow
= Reloc::CHECK_HIGH_INSN
;
11633 case elfcpp::R_POWERPC_REL16
:
11634 case elfcpp::R_PPC64_TOC16
:
11635 case elfcpp::R_POWERPC_GOT16
:
11636 case elfcpp::R_POWERPC_SECTOFF
:
11637 case elfcpp::R_POWERPC_TPREL16
:
11638 case elfcpp::R_POWERPC_DTPREL16
:
11639 case elfcpp::R_POWERPC_GOT_TLSGD16
:
11640 case elfcpp::R_POWERPC_GOT_TLSLD16
:
11641 case elfcpp::R_POWERPC_GOT_TPREL16
:
11642 case elfcpp::R_POWERPC_GOT_DTPREL16
:
11643 overflow
= Reloc::CHECK_LOW_INSN
;
11646 case elfcpp::R_PPC64_REL24_NOTOC
:
11650 case elfcpp::R_POWERPC_ADDR24
:
11651 case elfcpp::R_POWERPC_ADDR14
:
11652 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
11653 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
11654 case elfcpp::R_PPC64_ADDR16_DS
:
11655 case elfcpp::R_POWERPC_REL24
:
11656 case elfcpp::R_PPC_PLTREL24
:
11657 case elfcpp::R_PPC_LOCAL24PC
:
11658 case elfcpp::R_PPC64_TPREL16_DS
:
11659 case elfcpp::R_PPC64_DTPREL16_DS
:
11660 case elfcpp::R_PPC64_TOC16_DS
:
11661 case elfcpp::R_PPC64_GOT16_DS
:
11662 case elfcpp::R_PPC64_SECTOFF_DS
:
11663 case elfcpp::R_POWERPC_REL14
:
11664 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
11665 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
11666 case elfcpp::R_PPC64_D34
:
11667 case elfcpp::R_PPC64_PCREL34
:
11668 case elfcpp::R_PPC64_GOT_PCREL34
:
11669 case elfcpp::R_PPC64_PLT_PCREL34
:
11670 case elfcpp::R_PPC64_PLT_PCREL34_NOTOC
:
11671 case elfcpp::R_PPC64_D28
:
11672 case elfcpp::R_PPC64_PCREL28
:
11673 case elfcpp::R_PPC64_TPREL34
:
11674 case elfcpp::R_PPC64_DTPREL34
:
11675 case elfcpp::R_PPC64_GOT_TLSGD_PCREL34
:
11676 case elfcpp::R_PPC64_GOT_TLSLD_PCREL34
:
11677 case elfcpp::R_PPC64_GOT_TPREL_PCREL34
:
11678 case elfcpp::R_PPC64_GOT_DTPREL_PCREL34
:
11679 overflow
= Reloc::CHECK_SIGNED
;
11683 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
11686 if (overflow
== Reloc::CHECK_LOW_INSN
11687 || overflow
== Reloc::CHECK_HIGH_INSN
)
11689 insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
11691 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
11692 overflow
= Reloc::CHECK_BITFIELD
;
11693 else if (overflow
== Reloc::CHECK_LOW_INSN
11694 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
11695 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
11696 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
11697 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
11698 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
11699 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
11700 overflow
= Reloc::CHECK_UNSIGNED
;
11702 overflow
= Reloc::CHECK_SIGNED
;
11705 bool maybe_dq_reloc
= false;
11706 typename Powerpc_relocate_functions
<size
, big_endian
>::Status status
11707 = Powerpc_relocate_functions
<size
, big_endian
>::STATUS_OK
;
11710 case elfcpp::R_POWERPC_NONE
:
11711 case elfcpp::R_POWERPC_TLS
:
11712 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
11713 case elfcpp::R_POWERPC_GNU_VTENTRY
:
11714 case elfcpp::R_POWERPC_PLTSEQ
:
11715 case elfcpp::R_POWERPC_PLTCALL
:
11716 case elfcpp::R_PPC64_PLTSEQ_NOTOC
:
11717 case elfcpp::R_PPC64_PLTCALL_NOTOC
:
11718 case elfcpp::R_PPC64_PCREL_OPT
:
11721 case elfcpp::R_PPC64_ADDR64
:
11722 case elfcpp::R_PPC64_REL64
:
11723 case elfcpp::R_PPC64_TOC
:
11724 case elfcpp::R_PPC64_ADDR64_LOCAL
:
11725 Reloc::addr64(view
, value
);
11728 case elfcpp::R_POWERPC_TPREL
:
11729 case elfcpp::R_POWERPC_DTPREL
:
11731 Reloc::addr64(view
, value
);
11733 status
= Reloc::addr32(view
, value
, overflow
);
11736 case elfcpp::R_PPC64_UADDR64
:
11737 Reloc::addr64_u(view
, value
);
11740 case elfcpp::R_POWERPC_ADDR32
:
11741 status
= Reloc::addr32(view
, value
, overflow
);
11744 case elfcpp::R_POWERPC_REL32
:
11745 case elfcpp::R_POWERPC_UADDR32
:
11746 status
= Reloc::addr32_u(view
, value
, overflow
);
11749 case elfcpp::R_PPC64_REL24_NOTOC
:
11751 goto unsupp
; // R_PPC_EMB_RELSDA
11753 case elfcpp::R_POWERPC_ADDR24
:
11754 case elfcpp::R_POWERPC_REL24
:
11755 case elfcpp::R_PPC_PLTREL24
:
11756 case elfcpp::R_PPC_LOCAL24PC
:
11757 status
= Reloc::addr24(view
, value
, overflow
);
11760 case elfcpp::R_POWERPC_GOT_DTPREL16
:
11761 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
11762 case elfcpp::R_POWERPC_GOT_TPREL16
:
11763 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
11766 // On ppc64 these are all ds form
11767 maybe_dq_reloc
= true;
11771 case elfcpp::R_POWERPC_ADDR16
:
11772 case elfcpp::R_POWERPC_REL16
:
11773 case elfcpp::R_PPC64_TOC16
:
11774 case elfcpp::R_POWERPC_GOT16
:
11775 case elfcpp::R_POWERPC_SECTOFF
:
11776 case elfcpp::R_POWERPC_TPREL16
:
11777 case elfcpp::R_POWERPC_DTPREL16
:
11778 case elfcpp::R_POWERPC_GOT_TLSGD16
:
11779 case elfcpp::R_POWERPC_GOT_TLSLD16
:
11780 case elfcpp::R_POWERPC_ADDR16_LO
:
11781 case elfcpp::R_POWERPC_REL16_LO
:
11782 case elfcpp::R_PPC64_TOC16_LO
:
11783 case elfcpp::R_POWERPC_GOT16_LO
:
11784 case elfcpp::R_POWERPC_PLT16_LO
:
11785 case elfcpp::R_POWERPC_SECTOFF_LO
:
11786 case elfcpp::R_POWERPC_TPREL16_LO
:
11787 case elfcpp::R_POWERPC_DTPREL16_LO
:
11788 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
11789 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
11791 status
= Reloc::addr16(view
, value
, overflow
);
11793 maybe_dq_reloc
= true;
11796 case elfcpp::R_POWERPC_UADDR16
:
11797 status
= Reloc::addr16_u(view
, value
, overflow
);
11800 case elfcpp::R_PPC64_ADDR16_HIGH
:
11801 case elfcpp::R_PPC64_TPREL16_HIGH
:
11802 case elfcpp::R_PPC64_DTPREL16_HIGH
:
11804 // R_PPC_EMB_MRKREF, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HA
11807 case elfcpp::R_POWERPC_ADDR16_HI
:
11808 case elfcpp::R_POWERPC_REL16_HI
:
11809 case elfcpp::R_PPC64_REL16_HIGH
:
11810 case elfcpp::R_PPC64_TOC16_HI
:
11811 case elfcpp::R_POWERPC_GOT16_HI
:
11812 case elfcpp::R_POWERPC_PLT16_HI
:
11813 case elfcpp::R_POWERPC_SECTOFF_HI
:
11814 case elfcpp::R_POWERPC_TPREL16_HI
:
11815 case elfcpp::R_POWERPC_DTPREL16_HI
:
11816 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
11817 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
11818 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
11819 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
11820 Reloc::addr16_hi(view
, value
);
11823 case elfcpp::R_PPC64_ADDR16_HIGHA
:
11824 case elfcpp::R_PPC64_TPREL16_HIGHA
:
11825 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
11827 // R_PPC_EMB_RELSEC16, R_PPC_EMB_RELST_HI, R_PPC_EMB_BIT_FLD
11830 case elfcpp::R_POWERPC_ADDR16_HA
:
11831 case elfcpp::R_POWERPC_REL16_HA
:
11832 case elfcpp::R_PPC64_REL16_HIGHA
:
11833 case elfcpp::R_PPC64_TOC16_HA
:
11834 case elfcpp::R_POWERPC_GOT16_HA
:
11835 case elfcpp::R_POWERPC_PLT16_HA
:
11836 case elfcpp::R_POWERPC_SECTOFF_HA
:
11837 case elfcpp::R_POWERPC_TPREL16_HA
:
11838 case elfcpp::R_POWERPC_DTPREL16_HA
:
11839 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
11840 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
11841 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
11842 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
11843 Reloc::addr16_ha(view
, value
);
11846 case elfcpp::R_POWERPC_REL16DX_HA
:
11847 status
= Reloc::addr16dx_ha(view
, value
, overflow
);
11850 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
11852 // R_PPC_EMB_NADDR16_LO
11855 case elfcpp::R_PPC64_ADDR16_HIGHER
:
11856 case elfcpp::R_PPC64_REL16_HIGHER
:
11857 case elfcpp::R_PPC64_TPREL16_HIGHER
:
11858 Reloc::addr16_hi2(view
, value
);
11861 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
11863 // R_PPC_EMB_NADDR16_HI
11866 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
11867 case elfcpp::R_PPC64_REL16_HIGHERA
:
11868 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
11869 Reloc::addr16_ha2(view
, value
);
11872 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
11874 // R_PPC_EMB_NADDR16_HA
11877 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
11878 case elfcpp::R_PPC64_REL16_HIGHEST
:
11879 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
11880 Reloc::addr16_hi3(view
, value
);
11883 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
11885 // R_PPC_EMB_SDAI16
11888 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
11889 case elfcpp::R_PPC64_REL16_HIGHESTA
:
11890 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
11891 Reloc::addr16_ha3(view
, value
);
11894 case elfcpp::R_PPC64_DTPREL16_DS
:
11895 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
11897 // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16
11900 case elfcpp::R_PPC64_TPREL16_DS
:
11901 case elfcpp::R_PPC64_TPREL16_LO_DS
:
11903 // R_PPC_TLSGD, R_PPC_TLSLD
11906 case elfcpp::R_PPC64_ADDR16_DS
:
11907 case elfcpp::R_PPC64_ADDR16_LO_DS
:
11908 case elfcpp::R_PPC64_TOC16_DS
:
11909 case elfcpp::R_PPC64_TOC16_LO_DS
:
11910 case elfcpp::R_PPC64_GOT16_DS
:
11911 case elfcpp::R_PPC64_GOT16_LO_DS
:
11912 case elfcpp::R_PPC64_PLT16_LO_DS
:
11913 case elfcpp::R_PPC64_SECTOFF_DS
:
11914 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
11915 maybe_dq_reloc
= true;
11918 case elfcpp::R_POWERPC_ADDR14
:
11919 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
11920 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
11921 case elfcpp::R_POWERPC_REL14
:
11922 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
11923 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
11924 status
= Reloc::addr14(view
, value
, overflow
);
11927 case elfcpp::R_POWERPC_COPY
:
11928 case elfcpp::R_POWERPC_GLOB_DAT
:
11929 case elfcpp::R_POWERPC_JMP_SLOT
:
11930 case elfcpp::R_POWERPC_RELATIVE
:
11931 case elfcpp::R_POWERPC_DTPMOD
:
11932 case elfcpp::R_PPC64_JMP_IREL
:
11933 case elfcpp::R_POWERPC_IRELATIVE
:
11934 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
11935 _("unexpected reloc %u in object file"),
11939 case elfcpp::R_PPC64_TOCSAVE
:
11945 Symbol_location loc
;
11946 loc
.object
= relinfo
->object
;
11947 loc
.shndx
= relinfo
->data_shndx
;
11948 loc
.offset
= rela
.get_r_offset();
11949 const Tocsave_loc
*tocsave
= target
->tocsave_loc();
11950 if (tocsave
->find(loc
) != tocsave
->end())
11952 // If we've generated plt calls using this tocsave, then
11953 // the nop needs to be changed to save r2.
11954 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
11955 if (elfcpp::Swap
<32, big_endian
>::readval(iview
) == nop
)
11956 elfcpp::Swap
<32, big_endian
>::
11957 writeval(iview
, std_2_1
+ target
->stk_toc());
11962 case elfcpp::R_PPC_EMB_SDA2I16
:
11963 case elfcpp::R_PPC_EMB_SDA2REL
:
11966 // R_PPC64_TLSGD, R_PPC64_TLSLD
11969 case elfcpp::R_PPC64_D34
:
11970 case elfcpp::R_PPC64_D34_LO
:
11971 case elfcpp::R_PPC64_PCREL34
:
11972 case elfcpp::R_PPC64_GOT_PCREL34
:
11973 case elfcpp::R_PPC64_PLT_PCREL34
:
11974 case elfcpp::R_PPC64_PLT_PCREL34_NOTOC
:
11975 case elfcpp::R_PPC64_TPREL34
:
11976 case elfcpp::R_PPC64_DTPREL34
:
11977 case elfcpp::R_PPC64_GOT_TLSGD_PCREL34
:
11978 case elfcpp::R_PPC64_GOT_TLSLD_PCREL34
:
11979 case elfcpp::R_PPC64_GOT_TPREL_PCREL34
:
11980 case elfcpp::R_PPC64_GOT_DTPREL_PCREL34
:
11983 status
= Reloc::addr34(view
, value
, overflow
);
11986 case elfcpp::R_PPC64_D34_HI30
:
11989 Reloc::addr34_hi(view
, value
);
11992 case elfcpp::R_PPC64_D34_HA30
:
11995 Reloc::addr34_ha(view
, value
);
11998 case elfcpp::R_PPC64_D28
:
11999 case elfcpp::R_PPC64_PCREL28
:
12002 status
= Reloc::addr28(view
, value
, overflow
);
12005 case elfcpp::R_PPC64_ADDR16_HIGHER34
:
12006 case elfcpp::R_PPC64_REL16_HIGHER34
:
12009 Reloc::addr16_higher34(view
, value
);
12012 case elfcpp::R_PPC64_ADDR16_HIGHERA34
:
12013 case elfcpp::R_PPC64_REL16_HIGHERA34
:
12016 Reloc::addr16_highera34(view
, value
);
12019 case elfcpp::R_PPC64_ADDR16_HIGHEST34
:
12020 case elfcpp::R_PPC64_REL16_HIGHEST34
:
12023 Reloc::addr16_highest34(view
, value
);
12026 case elfcpp::R_PPC64_ADDR16_HIGHESTA34
:
12027 case elfcpp::R_PPC64_REL16_HIGHESTA34
:
12030 Reloc::addr16_highesta34(view
, value
);
12033 case elfcpp::R_POWERPC_PLT32
:
12034 case elfcpp::R_POWERPC_PLTREL32
:
12035 case elfcpp::R_PPC_SDAREL16
:
12036 case elfcpp::R_POWERPC_ADDR30
:
12037 case elfcpp::R_PPC64_PLT64
:
12038 case elfcpp::R_PPC64_PLTREL64
:
12039 case elfcpp::R_PPC64_PLTGOT16
:
12040 case elfcpp::R_PPC64_PLTGOT16_LO
:
12041 case elfcpp::R_PPC64_PLTGOT16_HI
:
12042 case elfcpp::R_PPC64_PLTGOT16_HA
:
12043 case elfcpp::R_PPC64_PLTGOT16_DS
:
12044 case elfcpp::R_PPC64_PLTGOT16_LO_DS
:
12045 case elfcpp::R_PPC_TOC16
:
12048 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
12049 _("unsupported reloc %u"),
12054 if (maybe_dq_reloc
)
12057 insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
12059 if ((insn
& (0x3f << 26)) == 56u << 26 /* lq */
12060 || ((insn
& (0x3f << 26)) == (61u << 26) /* lxv, stxv */
12061 && (insn
& 3) == 1))
12062 status
= Reloc::addr16_dq(view
, value
, overflow
);
12063 else if (size
== 64
12064 || (insn
& (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
12065 || (insn
& (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
12066 || (insn
& (0x3f << 26)) == 57u << 26 /* lfdp */
12067 || (insn
& (0x3f << 26)) == 61u << 26 /* stfdp */)
12068 status
= Reloc::addr16_ds(view
, value
, overflow
);
12070 status
= Reloc::addr16(view
, value
, overflow
);
12073 if (status
!= Powerpc_relocate_functions
<size
, big_endian
>::STATUS_OK
12076 && gsym
->is_undefined()
12077 && is_branch_reloc
<size
>(r_type
))))
12079 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
12080 _("relocation overflow"));
12081 if (has_stub_value
)
12082 gold_info(_("try relinking with a smaller --stub-group-size"));
12088 // Relocate section data.
12090 template<int size
, bool big_endian
>
12092 Target_powerpc
<size
, big_endian
>::relocate_section(
12093 const Relocate_info
<size
, big_endian
>* relinfo
,
12094 unsigned int sh_type
,
12095 const unsigned char* prelocs
,
12096 size_t reloc_count
,
12097 Output_section
* output_section
,
12098 bool needs_special_offset_handling
,
12099 unsigned char* view
,
12101 section_size_type view_size
,
12102 const Reloc_symbol_changes
* reloc_symbol_changes
)
12104 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
12105 typedef typename Target_powerpc
<size
, big_endian
>::Relocate Powerpc_relocate
;
12106 typedef typename Target_powerpc
<size
, big_endian
>::Relocate_comdat_behavior
12107 Powerpc_comdat_behavior
;
12108 typedef gold::Default_classify_reloc
<elfcpp::SHT_RELA
, size
, big_endian
>
12111 gold_assert(sh_type
== elfcpp::SHT_RELA
);
12113 gold::relocate_section
<size
, big_endian
, Powerpc
, Powerpc_relocate
,
12114 Powerpc_comdat_behavior
, Classify_reloc
>(
12120 needs_special_offset_handling
,
12124 reloc_symbol_changes
);
12127 template<int size
, bool big_endian
>
12128 class Powerpc_scan_relocatable_reloc
12131 typedef typename
elfcpp::Rela
<size
, big_endian
> Reltype
;
12132 static const int reloc_size
= elfcpp::Elf_sizes
<size
>::rela_size
;
12133 static const int sh_type
= elfcpp::SHT_RELA
;
12135 // Return the symbol referred to by the relocation.
12136 static inline unsigned int
12137 get_r_sym(const Reltype
* reloc
)
12138 { return elfcpp::elf_r_sym
<size
>(reloc
->get_r_info()); }
12140 // Return the type of the relocation.
12141 static inline unsigned int
12142 get_r_type(const Reltype
* reloc
)
12143 { return elfcpp::elf_r_type
<size
>(reloc
->get_r_info()); }
12145 // Return the strategy to use for a local symbol which is not a
12146 // section symbol, given the relocation type.
12147 inline Relocatable_relocs::Reloc_strategy
12148 local_non_section_strategy(unsigned int r_type
, Relobj
*, unsigned int r_sym
)
12150 if (r_type
== 0 && r_sym
== 0)
12151 return Relocatable_relocs::RELOC_DISCARD
;
12152 return Relocatable_relocs::RELOC_COPY
;
12155 // Return the strategy to use for a local symbol which is a section
12156 // symbol, given the relocation type.
12157 inline Relocatable_relocs::Reloc_strategy
12158 local_section_strategy(unsigned int, Relobj
*)
12160 return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
;
12163 // Return the strategy to use for a global symbol, given the
12164 // relocation type, the object, and the symbol index.
12165 inline Relocatable_relocs::Reloc_strategy
12166 global_strategy(unsigned int r_type
, Relobj
*, unsigned int)
12169 && (r_type
== elfcpp::R_PPC_PLTREL24
12170 || r_type
== elfcpp::R_POWERPC_PLT16_LO
12171 || r_type
== elfcpp::R_POWERPC_PLT16_HI
12172 || r_type
== elfcpp::R_POWERPC_PLT16_HA
))
12173 return Relocatable_relocs::RELOC_SPECIAL
;
12174 return Relocatable_relocs::RELOC_COPY
;
12178 // Scan the relocs during a relocatable link.
12180 template<int size
, bool big_endian
>
12182 Target_powerpc
<size
, big_endian
>::scan_relocatable_relocs(
12183 Symbol_table
* symtab
,
12185 Sized_relobj_file
<size
, big_endian
>* object
,
12186 unsigned int data_shndx
,
12187 unsigned int sh_type
,
12188 const unsigned char* prelocs
,
12189 size_t reloc_count
,
12190 Output_section
* output_section
,
12191 bool needs_special_offset_handling
,
12192 size_t local_symbol_count
,
12193 const unsigned char* plocal_symbols
,
12194 Relocatable_relocs
* rr
)
12196 typedef Powerpc_scan_relocatable_reloc
<size
, big_endian
> Scan_strategy
;
12198 gold_assert(sh_type
== elfcpp::SHT_RELA
);
12200 gold::scan_relocatable_relocs
<size
, big_endian
, Scan_strategy
>(
12208 needs_special_offset_handling
,
12209 local_symbol_count
,
12214 // Scan the relocs for --emit-relocs.
12216 template<int size
, bool big_endian
>
12218 Target_powerpc
<size
, big_endian
>::emit_relocs_scan(
12219 Symbol_table
* symtab
,
12221 Sized_relobj_file
<size
, big_endian
>* object
,
12222 unsigned int data_shndx
,
12223 unsigned int sh_type
,
12224 const unsigned char* prelocs
,
12225 size_t reloc_count
,
12226 Output_section
* output_section
,
12227 bool needs_special_offset_handling
,
12228 size_t local_symbol_count
,
12229 const unsigned char* plocal_syms
,
12230 Relocatable_relocs
* rr
)
12232 typedef gold::Default_classify_reloc
<elfcpp::SHT_RELA
, size
, big_endian
>
12234 typedef gold::Default_emit_relocs_strategy
<Classify_reloc
>
12235 Emit_relocs_strategy
;
12237 gold_assert(sh_type
== elfcpp::SHT_RELA
);
12239 gold::scan_relocatable_relocs
<size
, big_endian
, Emit_relocs_strategy
>(
12247 needs_special_offset_handling
,
12248 local_symbol_count
,
12253 // Emit relocations for a section.
12254 // This is a modified version of the function by the same name in
12255 // target-reloc.h. Using relocate_special_relocatable for
12256 // R_PPC_PLTREL24 would require duplication of the entire body of the
12257 // loop, so we may as well duplicate the whole thing.
12259 template<int size
, bool big_endian
>
12261 Target_powerpc
<size
, big_endian
>::relocate_relocs(
12262 const Relocate_info
<size
, big_endian
>* relinfo
,
12263 unsigned int sh_type
,
12264 const unsigned char* prelocs
,
12265 size_t reloc_count
,
12266 Output_section
* output_section
,
12267 typename
elfcpp::Elf_types
<size
>::Elf_Off offset_in_output_section
,
12269 Address view_address
,
12271 unsigned char* reloc_view
,
12272 section_size_type reloc_view_size
)
12274 gold_assert(sh_type
== elfcpp::SHT_RELA
);
12276 typedef typename
elfcpp::Rela
<size
, big_endian
> Reltype
;
12277 typedef typename
elfcpp::Rela_write
<size
, big_endian
> Reltype_write
;
12278 const int reloc_size
= elfcpp::Elf_sizes
<size
>::rela_size
;
12279 // Offset from start of insn to d-field reloc.
12280 const int d_offset
= big_endian
? 2 : 0;
12282 Powerpc_relobj
<size
, big_endian
>* const object
12283 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(relinfo
->object
);
12284 const unsigned int local_count
= object
->local_symbol_count();
12285 unsigned int got2_shndx
= object
->got2_shndx();
12286 Address got2_addend
= 0;
12287 if (got2_shndx
!= 0)
12289 got2_addend
= object
->get_output_section_offset(got2_shndx
);
12290 gold_assert(got2_addend
!= invalid_address
);
12293 const bool relocatable
= parameters
->options().relocatable();
12295 unsigned char* pwrite
= reloc_view
;
12296 bool zap_next
= false;
12297 for (size_t i
= 0; i
< reloc_count
; ++i
, prelocs
+= reloc_size
)
12299 Relocatable_relocs::Reloc_strategy strategy
= relinfo
->rr
->strategy(i
);
12300 if (strategy
== Relocatable_relocs::RELOC_DISCARD
)
12303 Reltype
reloc(prelocs
);
12304 Reltype_write
reloc_write(pwrite
);
12306 Address offset
= reloc
.get_r_offset();
12307 typename
elfcpp::Elf_types
<size
>::Elf_WXword r_info
= reloc
.get_r_info();
12308 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(r_info
);
12309 unsigned int r_type
= elfcpp::elf_r_type
<size
>(r_info
);
12310 const unsigned int orig_r_sym
= r_sym
;
12311 typename
elfcpp::Elf_types
<size
>::Elf_Swxword addend
12312 = reloc
.get_r_addend();
12313 const Symbol
* gsym
= NULL
;
12317 // We could arrange to discard these and other relocs for
12318 // tls optimised sequences in the strategy methods, but for
12319 // now do as BFD ld does.
12320 r_type
= elfcpp::R_POWERPC_NONE
;
12324 // Get the new symbol index.
12325 Output_section
* os
= NULL
;
12326 if (r_sym
< local_count
)
12330 case Relocatable_relocs::RELOC_COPY
:
12331 case Relocatable_relocs::RELOC_SPECIAL
:
12334 r_sym
= object
->symtab_index(r_sym
);
12335 gold_assert(r_sym
!= -1U);
12339 case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
:
12341 // We are adjusting a section symbol. We need to find
12342 // the symbol table index of the section symbol for
12343 // the output section corresponding to input section
12344 // in which this symbol is defined.
12345 gold_assert(r_sym
< local_count
);
12347 unsigned int shndx
=
12348 object
->local_symbol_input_shndx(r_sym
, &is_ordinary
);
12349 gold_assert(is_ordinary
);
12350 os
= object
->output_section(shndx
);
12351 gold_assert(os
!= NULL
);
12352 gold_assert(os
->needs_symtab_index());
12353 r_sym
= os
->symtab_index();
12358 gold_unreachable();
12363 gsym
= object
->global_symbol(r_sym
);
12364 gold_assert(gsym
!= NULL
);
12365 if (gsym
->is_forwarder())
12366 gsym
= relinfo
->symtab
->resolve_forwards(gsym
);
12368 gold_assert(gsym
->has_symtab_index());
12369 r_sym
= gsym
->symtab_index();
12372 // Get the new offset--the location in the output section where
12373 // this relocation should be applied.
12374 if (static_cast<Address
>(offset_in_output_section
) != invalid_address
)
12375 offset
+= offset_in_output_section
;
12378 section_offset_type sot_offset
=
12379 convert_types
<section_offset_type
, Address
>(offset
);
12380 section_offset_type new_sot_offset
=
12381 output_section
->output_offset(object
, relinfo
->data_shndx
,
12383 gold_assert(new_sot_offset
!= -1);
12384 offset
= new_sot_offset
;
12387 // In an object file, r_offset is an offset within the section.
12388 // In an executable or dynamic object, generated by
12389 // --emit-relocs, r_offset is an absolute address.
12392 offset
+= view_address
;
12393 if (static_cast<Address
>(offset_in_output_section
) != invalid_address
)
12394 offset
-= offset_in_output_section
;
12397 // Handle the reloc addend based on the strategy.
12398 if (strategy
== Relocatable_relocs::RELOC_COPY
)
12400 else if (strategy
== Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
)
12402 const Symbol_value
<size
>* psymval
= object
->local_symbol(orig_r_sym
);
12403 addend
= psymval
->value(object
, addend
);
12404 // In a relocatable link, the symbol value is relative to
12405 // the start of the output section. For a non-relocatable
12406 // link, we need to adjust the addend.
12409 gold_assert(os
!= NULL
);
12410 addend
-= os
->address();
12413 else if (strategy
== Relocatable_relocs::RELOC_SPECIAL
)
12417 if (addend
>= 32768)
12418 addend
+= got2_addend
;
12420 else if (r_type
== elfcpp::R_POWERPC_REL16_HA
)
12422 r_type
= elfcpp::R_POWERPC_ADDR16_HA
;
12423 addend
-= d_offset
;
12425 else if (r_type
== elfcpp::R_POWERPC_REL16_LO
)
12427 r_type
= elfcpp::R_POWERPC_ADDR16_LO
;
12428 addend
-= d_offset
+ 4;
12432 gold_unreachable();
12436 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
12437 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
12438 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HI
12439 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HA
)
12441 // First instruction of a global dynamic sequence,
12443 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
12444 switch (this->optimize_tls_gd(final
))
12446 case tls::TLSOPT_TO_IE
:
12447 r_type
+= (elfcpp::R_POWERPC_GOT_TPREL16
12448 - elfcpp::R_POWERPC_GOT_TLSGD16
);
12450 case tls::TLSOPT_TO_LE
:
12451 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
12452 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
12453 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
12456 r_type
= elfcpp::R_POWERPC_NONE
;
12457 offset
-= d_offset
;
12464 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
12465 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
12466 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HI
12467 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HA
)
12469 // First instruction of a local dynamic sequence,
12471 if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE
)
12473 if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
12474 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
)
12476 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
12477 const Output_section
* os
= relinfo
->layout
->tls_segment()
12479 gold_assert(os
!= NULL
);
12480 gold_assert(os
->needs_symtab_index());
12481 r_sym
= os
->symtab_index();
12482 addend
= dtp_offset
;
12486 r_type
= elfcpp::R_POWERPC_NONE
;
12487 offset
-= d_offset
;
12491 else if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
12492 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
12493 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HI
12494 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HA
)
12496 // First instruction of initial exec sequence.
12497 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
12498 if (this->optimize_tls_ie(final
) == tls::TLSOPT_TO_LE
)
12500 if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
12501 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
)
12502 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
12505 r_type
= elfcpp::R_POWERPC_NONE
;
12506 offset
-= d_offset
;
12510 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
12511 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
12513 // Second instruction of a global dynamic sequence,
12514 // the __tls_get_addr call
12515 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
12516 switch (this->optimize_tls_gd(final
))
12518 case tls::TLSOPT_TO_IE
:
12519 r_type
= elfcpp::R_POWERPC_NONE
;
12522 case tls::TLSOPT_TO_LE
:
12523 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
12524 offset
+= d_offset
;
12531 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
12532 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
12534 // Second instruction of a local dynamic sequence,
12535 // the __tls_get_addr call
12536 if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE
)
12538 const Output_section
* os
= relinfo
->layout
->tls_segment()
12540 gold_assert(os
!= NULL
);
12541 gold_assert(os
->needs_symtab_index());
12542 r_sym
= os
->symtab_index();
12543 addend
= dtp_offset
;
12544 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
12545 offset
+= d_offset
;
12549 else if (r_type
== elfcpp::R_POWERPC_TLS
)
12551 // Second instruction of an initial exec sequence
12552 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
12553 if (this->optimize_tls_ie(final
) == tls::TLSOPT_TO_LE
)
12555 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
12556 offset
+= d_offset
;
12561 reloc_write
.put_r_offset(offset
);
12562 reloc_write
.put_r_info(elfcpp::elf_r_info
<size
>(r_sym
, r_type
));
12563 reloc_write
.put_r_addend(addend
);
12565 pwrite
+= reloc_size
;
12568 gold_assert(static_cast<section_size_type
>(pwrite
- reloc_view
)
12569 == reloc_view_size
);
12572 // Return the value to use for a dynamic symbol which requires special
12573 // treatment. This is how we support equality comparisons of function
12574 // pointers across shared library boundaries, as described in the
12575 // processor specific ABI supplement.
12577 template<int size
, bool big_endian
>
12579 Target_powerpc
<size
, big_endian
>::do_dynsym_value(const Symbol
* gsym
) const
12583 gold_assert(gsym
->is_from_dynobj() && gsym
->has_plt_offset());
12584 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
12585 p
!= this->stub_tables_
.end();
12588 const typename Stub_table
<size
, big_endian
>::Plt_stub_ent
* ent
12589 = (*p
)->find_plt_call_entry(gsym
);
12591 return (*p
)->stub_address() + ent
->off_
;
12594 else if (this->abiversion() >= 2)
12596 Address off
= this->glink_section()->find_global_entry(gsym
);
12597 if (off
!= invalid_address
)
12598 return this->glink_section()->global_entry_address() + off
;
12600 gold_unreachable();
12603 // Return the PLT address to use for a local symbol.
12604 template<int size
, bool big_endian
>
12606 Target_powerpc
<size
, big_endian
>::do_plt_address_for_local(
12607 const Relobj
* object
,
12608 unsigned int symndx
) const
12612 const Sized_relobj
<size
, big_endian
>* relobj
12613 = static_cast<const Sized_relobj
<size
, big_endian
>*>(object
);
12614 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
12615 p
!= this->stub_tables_
.end();
12618 const typename Stub_table
<size
, big_endian
>::Plt_stub_ent
* ent
12619 = (*p
)->find_plt_call_entry(relobj
->sized_relobj(), symndx
);
12621 return (*p
)->stub_address() + ent
->off_
;
12624 gold_unreachable();
12627 // Return the PLT address to use for a global symbol.
12628 template<int size
, bool big_endian
>
12630 Target_powerpc
<size
, big_endian
>::do_plt_address_for_global(
12631 const Symbol
* gsym
) const
12635 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
12636 p
!= this->stub_tables_
.end();
12639 const typename Stub_table
<size
, big_endian
>::Plt_stub_ent
* ent
12640 = (*p
)->find_plt_call_entry(gsym
);
12642 return (*p
)->stub_address() + ent
->off_
;
12645 else if (this->abiversion() >= 2)
12647 Address off
= this->glink_section()->find_global_entry(gsym
);
12648 if (off
!= invalid_address
)
12649 return this->glink_section()->global_entry_address() + off
;
12651 gold_unreachable();
12654 // Return the offset to use for the GOT_INDX'th got entry which is
12655 // for a local tls symbol specified by OBJECT, SYMNDX.
12656 template<int size
, bool big_endian
>
12658 Target_powerpc
<size
, big_endian
>::do_tls_offset_for_local(
12659 const Relobj
* object
,
12660 unsigned int symndx
,
12661 unsigned int got_indx
) const
12663 const Powerpc_relobj
<size
, big_endian
>* ppc_object
12664 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>(object
);
12665 if (ppc_object
->local_symbol(symndx
)->is_tls_symbol())
12667 for (Got_type got_type
= GOT_TYPE_TLSGD
;
12668 got_type
<= GOT_TYPE_TPREL
;
12669 got_type
= Got_type(got_type
+ 1))
12670 if (ppc_object
->local_has_got_offset(symndx
, got_type
))
12672 unsigned int off
= ppc_object
->local_got_offset(symndx
, got_type
);
12673 if (got_type
== GOT_TYPE_TLSGD
)
12675 if (off
== got_indx
* (size
/ 8))
12677 if (got_type
== GOT_TYPE_TPREL
)
12680 return -dtp_offset
;
12684 gold_unreachable();
12687 // Return the offset to use for the GOT_INDX'th got entry which is
12688 // for global tls symbol GSYM.
12689 template<int size
, bool big_endian
>
12691 Target_powerpc
<size
, big_endian
>::do_tls_offset_for_global(
12693 unsigned int got_indx
) const
12695 if (gsym
->type() == elfcpp::STT_TLS
)
12697 for (Got_type got_type
= GOT_TYPE_TLSGD
;
12698 got_type
<= GOT_TYPE_TPREL
;
12699 got_type
= Got_type(got_type
+ 1))
12700 if (gsym
->has_got_offset(got_type
))
12702 unsigned int off
= gsym
->got_offset(got_type
);
12703 if (got_type
== GOT_TYPE_TLSGD
)
12705 if (off
== got_indx
* (size
/ 8))
12707 if (got_type
== GOT_TYPE_TPREL
)
12710 return -dtp_offset
;
12714 gold_unreachable();
12717 // The selector for powerpc object files.
12719 template<int size
, bool big_endian
>
12720 class Target_selector_powerpc
: public Target_selector
12723 Target_selector_powerpc()
12724 : Target_selector(size
== 64 ? elfcpp::EM_PPC64
: elfcpp::EM_PPC
,
12727 ? (big_endian
? "elf64-powerpc" : "elf64-powerpcle")
12728 : (big_endian
? "elf32-powerpc" : "elf32-powerpcle")),
12730 ? (big_endian
? "elf64ppc" : "elf64lppc")
12731 : (big_endian
? "elf32ppc" : "elf32lppc")))
12735 do_instantiate_target()
12736 { return new Target_powerpc
<size
, big_endian
>(); }
12739 Target_selector_powerpc
<32, true> target_selector_ppc32
;
12740 Target_selector_powerpc
<32, false> target_selector_ppc32le
;
12741 Target_selector_powerpc
<64, true> target_selector_ppc64
;
12742 Target_selector_powerpc
<64, false> target_selector_ppc64le
;
12744 // Instantiate these constants for -O0
12745 template<int size
, bool big_endian
>
12746 const typename Output_data_glink
<size
, big_endian
>::Address
12747 Output_data_glink
<size
, big_endian
>::invalid_address
;
12748 template<int size
, bool big_endian
>
12749 const typename Stub_table
<size
, big_endian
>::Address
12750 Stub_table
<size
, big_endian
>::invalid_address
;
12751 template<int size
, bool big_endian
>
12752 const typename Target_powerpc
<size
, big_endian
>::Address
12753 Target_powerpc
<size
, big_endian
>::invalid_address
;
12755 } // End anonymous namespace.