1 // powerpc.cc -- powerpc target support for gold.
3 // Copyright (C) 2008-2016 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"
50 template<int size
, bool big_endian
>
51 class Output_data_plt_powerpc
;
53 template<int size
, bool big_endian
>
54 class Output_data_brlt_powerpc
;
56 template<int size
, bool big_endian
>
57 class Output_data_got_powerpc
;
59 template<int size
, bool big_endian
>
60 class Output_data_glink
;
62 template<int size
, bool big_endian
>
65 template<int size
, bool big_endian
>
66 class Output_data_save_res
;
68 template<int size
, bool big_endian
>
71 struct Stub_table_owner
73 Output_section
* output_section
;
74 const Output_section::Input_section
* owner
;
78 is_branch_reloc(unsigned int r_type
);
80 template<int size
, bool big_endian
>
81 class Powerpc_relobj
: public Sized_relobj_file
<size
, big_endian
>
84 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
85 typedef Unordered_set
<Section_id
, Section_id_hash
> Section_refs
;
86 typedef Unordered_map
<Address
, Section_refs
> Access_from
;
88 Powerpc_relobj(const std::string
& name
, Input_file
* input_file
, off_t offset
,
89 const typename
elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
90 : Sized_relobj_file
<size
, big_endian
>(name
, input_file
, offset
, ehdr
),
91 special_(0), has_small_toc_reloc_(false), opd_valid_(false),
92 opd_ent_(), access_from_map_(), has14_(), stub_table_index_(),
93 e_flags_(ehdr
.get_e_flags()), st_other_()
95 this->set_abiversion(0);
101 // Read the symbols then set up st_other vector.
103 do_read_symbols(Read_symbols_data
*);
105 // The .got2 section shndx.
110 return this->special_
;
115 // The .opd section shndx.
122 return this->special_
;
125 // Init OPD entry arrays.
127 init_opd(size_t opd_size
)
129 size_t count
= this->opd_ent_ndx(opd_size
);
130 this->opd_ent_
.resize(count
);
133 // Return section and offset of function entry for .opd + R_OFF.
135 get_opd_ent(Address r_off
, Address
* value
= NULL
) const
137 size_t ndx
= this->opd_ent_ndx(r_off
);
138 gold_assert(ndx
< this->opd_ent_
.size());
139 gold_assert(this->opd_ent_
[ndx
].shndx
!= 0);
141 *value
= this->opd_ent_
[ndx
].off
;
142 return this->opd_ent_
[ndx
].shndx
;
145 // Set section and offset of function entry for .opd + R_OFF.
147 set_opd_ent(Address r_off
, unsigned int shndx
, Address value
)
149 size_t ndx
= this->opd_ent_ndx(r_off
);
150 gold_assert(ndx
< this->opd_ent_
.size());
151 this->opd_ent_
[ndx
].shndx
= shndx
;
152 this->opd_ent_
[ndx
].off
= value
;
155 // Return discard flag for .opd + R_OFF.
157 get_opd_discard(Address r_off
) const
159 size_t ndx
= this->opd_ent_ndx(r_off
);
160 gold_assert(ndx
< this->opd_ent_
.size());
161 return this->opd_ent_
[ndx
].discard
;
164 // Set discard flag for .opd + R_OFF.
166 set_opd_discard(Address r_off
)
168 size_t ndx
= this->opd_ent_ndx(r_off
);
169 gold_assert(ndx
< this->opd_ent_
.size());
170 this->opd_ent_
[ndx
].discard
= true;
175 { return this->opd_valid_
; }
179 { this->opd_valid_
= true; }
181 // Examine .rela.opd to build info about function entry points.
183 scan_opd_relocs(size_t reloc_count
,
184 const unsigned char* prelocs
,
185 const unsigned char* plocal_syms
);
187 // Perform the Sized_relobj_file method, then set up opd info from
190 do_read_relocs(Read_relocs_data
*);
193 do_find_special_sections(Read_symbols_data
* sd
);
195 // Adjust this local symbol value. Return false if the symbol
196 // should be discarded from the output file.
198 do_adjust_local_symbol(Symbol_value
<size
>* lv
) const
200 if (size
== 64 && this->opd_shndx() != 0)
203 if (lv
->input_shndx(&is_ordinary
) != this->opd_shndx())
205 if (this->get_opd_discard(lv
->input_value()))
213 { return &this->access_from_map_
; }
215 // Add a reference from SRC_OBJ, SRC_INDX to this object's .opd
216 // section at DST_OFF.
218 add_reference(Relobj
* src_obj
,
219 unsigned int src_indx
,
220 typename
elfcpp::Elf_types
<size
>::Elf_Addr dst_off
)
222 Section_id
src_id(src_obj
, src_indx
);
223 this->access_from_map_
[dst_off
].insert(src_id
);
226 // Add a reference to the code section specified by the .opd entry
229 add_gc_mark(typename
elfcpp::Elf_types
<size
>::Elf_Addr dst_off
)
231 size_t ndx
= this->opd_ent_ndx(dst_off
);
232 if (ndx
>= this->opd_ent_
.size())
233 this->opd_ent_
.resize(ndx
+ 1);
234 this->opd_ent_
[ndx
].gc_mark
= true;
238 process_gc_mark(Symbol_table
* symtab
)
240 for (size_t i
= 0; i
< this->opd_ent_
.size(); i
++)
241 if (this->opd_ent_
[i
].gc_mark
)
243 unsigned int shndx
= this->opd_ent_
[i
].shndx
;
244 symtab
->gc()->worklist().push_back(Section_id(this, shndx
));
248 // Return offset in output GOT section that this object will use
249 // as a TOC pointer. Won't be just a constant with multi-toc support.
251 toc_base_offset() const
255 set_has_small_toc_reloc()
256 { has_small_toc_reloc_
= true; }
259 has_small_toc_reloc() const
260 { return has_small_toc_reloc_
; }
263 set_has_14bit_branch(unsigned int shndx
)
265 if (shndx
>= this->has14_
.size())
266 this->has14_
.resize(shndx
+ 1);
267 this->has14_
[shndx
] = true;
271 has_14bit_branch(unsigned int shndx
) const
272 { return shndx
< this->has14_
.size() && this->has14_
[shndx
]; }
275 set_stub_table(unsigned int shndx
, unsigned int stub_index
)
277 if (shndx
>= this->stub_table_index_
.size())
278 this->stub_table_index_
.resize(shndx
+ 1);
279 this->stub_table_index_
[shndx
] = stub_index
;
282 Stub_table
<size
, big_endian
>*
283 stub_table(unsigned int shndx
)
285 if (shndx
< this->stub_table_index_
.size())
287 Target_powerpc
<size
, big_endian
>* target
288 = static_cast<Target_powerpc
<size
, big_endian
>*>(
289 parameters
->sized_target
<size
, big_endian
>());
290 unsigned int indx
= this->stub_table_index_
[shndx
];
291 gold_assert(indx
< target
->stub_tables().size());
292 return target
->stub_tables()[indx
];
300 this->stub_table_index_
.clear();
305 { return this->e_flags_
& elfcpp::EF_PPC64_ABI
; }
307 // Set ABI version for input and output
309 set_abiversion(int ver
);
312 ppc64_local_entry_offset(const Symbol
* sym
) const
313 { return elfcpp::ppc64_decode_local_entry(sym
->nonvis() >> 3); }
316 ppc64_local_entry_offset(unsigned int symndx
) const
317 { return elfcpp::ppc64_decode_local_entry(this->st_other_
[symndx
] >> 5); }
328 // Return index into opd_ent_ array for .opd entry at OFF.
329 // .opd entries are 24 bytes long, but they can be spaced 16 bytes
330 // apart when the language doesn't use the last 8-byte word, the
331 // environment pointer. Thus dividing the entry section offset by
332 // 16 will give an index into opd_ent_ that works for either layout
333 // of .opd. (It leaves some elements of the vector unused when .opd
334 // entries are spaced 24 bytes apart, but we don't know the spacing
335 // until relocations are processed, and in any case it is possible
336 // for an object to have some entries spaced 16 bytes apart and
337 // others 24 bytes apart.)
339 opd_ent_ndx(size_t off
) const
342 // For 32-bit the .got2 section shdnx, for 64-bit the .opd section shndx.
343 unsigned int special_
;
345 // For 64-bit, whether this object uses small model relocs to access
347 bool has_small_toc_reloc_
;
349 // Set at the start of gc_process_relocs, when we know opd_ent_
350 // vector is valid. The flag could be made atomic and set in
351 // do_read_relocs with memory_order_release and then tested with
352 // memory_order_acquire, potentially resulting in fewer entries in
356 // The first 8-byte word of an OPD entry gives the address of the
357 // entry point of the function. Relocatable object files have a
358 // relocation on this word. The following vector records the
359 // section and offset specified by these relocations.
360 std::vector
<Opd_ent
> opd_ent_
;
362 // References made to this object's .opd section when running
363 // gc_process_relocs for another object, before the opd_ent_ vector
364 // is valid for this object.
365 Access_from access_from_map_
;
367 // Whether input section has a 14-bit branch reloc.
368 std::vector
<bool> has14_
;
370 // The stub table to use for a given input section.
371 std::vector
<unsigned int> stub_table_index_
;
374 elfcpp::Elf_Word e_flags_
;
376 // ELF st_other field for local symbols.
377 std::vector
<unsigned char> st_other_
;
380 template<int size
, bool big_endian
>
381 class Powerpc_dynobj
: public Sized_dynobj
<size
, big_endian
>
384 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
386 Powerpc_dynobj(const std::string
& name
, Input_file
* input_file
, off_t offset
,
387 const typename
elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
388 : Sized_dynobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
),
389 opd_shndx_(0), opd_ent_(), e_flags_(ehdr
.get_e_flags())
391 this->set_abiversion(0);
397 // Call Sized_dynobj::do_read_symbols to read the symbols then
398 // read .opd from a dynamic object, filling in opd_ent_ vector,
400 do_read_symbols(Read_symbols_data
*);
402 // The .opd section shndx.
406 return this->opd_shndx_
;
409 // The .opd section address.
413 return this->opd_address_
;
416 // Init OPD entry arrays.
418 init_opd(size_t opd_size
)
420 size_t count
= this->opd_ent_ndx(opd_size
);
421 this->opd_ent_
.resize(count
);
424 // Return section and offset of function entry for .opd + R_OFF.
426 get_opd_ent(Address r_off
, Address
* value
= NULL
) const
428 size_t ndx
= this->opd_ent_ndx(r_off
);
429 gold_assert(ndx
< this->opd_ent_
.size());
430 gold_assert(this->opd_ent_
[ndx
].shndx
!= 0);
432 *value
= this->opd_ent_
[ndx
].off
;
433 return this->opd_ent_
[ndx
].shndx
;
436 // Set section and offset of function entry for .opd + R_OFF.
438 set_opd_ent(Address r_off
, unsigned int shndx
, Address value
)
440 size_t ndx
= this->opd_ent_ndx(r_off
);
441 gold_assert(ndx
< this->opd_ent_
.size());
442 this->opd_ent_
[ndx
].shndx
= shndx
;
443 this->opd_ent_
[ndx
].off
= value
;
448 { return this->e_flags_
& elfcpp::EF_PPC64_ABI
; }
450 // Set ABI version for input and output.
452 set_abiversion(int ver
);
455 // Used to specify extent of executable sections.
458 Sec_info(Address start_
, Address len_
, unsigned int shndx_
)
459 : start(start_
), len(len_
), shndx(shndx_
)
463 operator<(const Sec_info
& that
) const
464 { return this->start
< that
.start
; }
477 // Return index into opd_ent_ array for .opd entry at OFF.
479 opd_ent_ndx(size_t off
) const
482 // For 64-bit the .opd section shndx and address.
483 unsigned int opd_shndx_
;
484 Address opd_address_
;
486 // The first 8-byte word of an OPD entry gives the address of the
487 // entry point of the function. Records the section and offset
488 // corresponding to the address. Note that in dynamic objects,
489 // offset is *not* relative to the section.
490 std::vector
<Opd_ent
> opd_ent_
;
493 elfcpp::Elf_Word e_flags_
;
496 template<int size
, bool big_endian
>
497 class Target_powerpc
: public Sized_target
<size
, big_endian
>
501 Output_data_reloc
<elfcpp::SHT_RELA
, true, size
, big_endian
> Reloc_section
;
502 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
503 typedef typename
elfcpp::Elf_types
<size
>::Elf_Swxword Signed_address
;
504 static const Address invalid_address
= static_cast<Address
>(0) - 1;
505 // Offset of tp and dtp pointers from start of TLS block.
506 static const Address tp_offset
= 0x7000;
507 static const Address dtp_offset
= 0x8000;
510 : Sized_target
<size
, big_endian
>(&powerpc_info
),
511 got_(NULL
), plt_(NULL
), iplt_(NULL
), brlt_section_(NULL
),
512 glink_(NULL
), rela_dyn_(NULL
), copy_relocs_(elfcpp::R_POWERPC_COPY
),
513 tlsld_got_offset_(-1U),
514 stub_tables_(), branch_lookup_table_(), branch_info_(),
515 plt_thread_safe_(false), relax_failed_(false), relax_fail_count_(0),
516 stub_group_size_(0), savres_section_(0)
520 // Process the relocations to determine unreferenced sections for
521 // garbage collection.
523 gc_process_relocs(Symbol_table
* symtab
,
525 Sized_relobj_file
<size
, big_endian
>* object
,
526 unsigned int data_shndx
,
527 unsigned int sh_type
,
528 const unsigned char* prelocs
,
530 Output_section
* output_section
,
531 bool needs_special_offset_handling
,
532 size_t local_symbol_count
,
533 const unsigned char* plocal_symbols
);
535 // Scan the relocations to look for symbol adjustments.
537 scan_relocs(Symbol_table
* symtab
,
539 Sized_relobj_file
<size
, big_endian
>* object
,
540 unsigned int data_shndx
,
541 unsigned int sh_type
,
542 const unsigned char* prelocs
,
544 Output_section
* output_section
,
545 bool needs_special_offset_handling
,
546 size_t local_symbol_count
,
547 const unsigned char* plocal_symbols
);
549 // Map input .toc section to output .got section.
551 do_output_section_name(const Relobj
*, const char* name
, size_t* plen
) const
553 if (size
== 64 && strcmp(name
, ".toc") == 0)
561 // Provide linker defined save/restore functions.
563 define_save_restore_funcs(Layout
*, Symbol_table
*);
565 // No stubs unless a final link.
568 { return !parameters
->options().relocatable(); }
571 do_relax(int, const Input_objects
*, Symbol_table
*, Layout
*, const Task
*);
574 do_plt_fde_location(const Output_data
*, unsigned char*,
575 uint64_t*, off_t
*) const;
577 // Stash info about branches, for stub generation.
579 push_branch(Powerpc_relobj
<size
, big_endian
>* ppc_object
,
580 unsigned int data_shndx
, Address r_offset
,
581 unsigned int r_type
, unsigned int r_sym
, Address addend
)
583 Branch_info
info(ppc_object
, data_shndx
, r_offset
, r_type
, r_sym
, addend
);
584 this->branch_info_
.push_back(info
);
585 if (r_type
== elfcpp::R_POWERPC_REL14
586 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
587 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
)
588 ppc_object
->set_has_14bit_branch(data_shndx
);
592 do_define_standard_symbols(Symbol_table
*, Layout
*);
594 // Finalize the sections.
596 do_finalize_sections(Layout
*, const Input_objects
*, Symbol_table
*);
598 // Return the value to use for a dynamic which requires special
601 do_dynsym_value(const Symbol
*) const;
603 // Return the PLT address to use for a local symbol.
605 do_plt_address_for_local(const Relobj
*, unsigned int) const;
607 // Return the PLT address to use for a global symbol.
609 do_plt_address_for_global(const Symbol
*) const;
611 // Return the offset to use for the GOT_INDX'th got entry which is
612 // for a local tls symbol specified by OBJECT, SYMNDX.
614 do_tls_offset_for_local(const Relobj
* object
,
616 unsigned int got_indx
) const;
618 // Return the offset to use for the GOT_INDX'th got entry which is
619 // for global tls symbol GSYM.
621 do_tls_offset_for_global(Symbol
* gsym
, unsigned int got_indx
) const;
624 do_function_location(Symbol_location
*) const;
627 do_can_check_for_function_pointers() const
630 // Adjust -fsplit-stack code which calls non-split-stack code.
632 do_calls_non_split(Relobj
* object
, unsigned int shndx
,
633 section_offset_type fnoffset
, section_size_type fnsize
,
634 const unsigned char* prelocs
, size_t reloc_count
,
635 unsigned char* view
, section_size_type view_size
,
636 std::string
* from
, std::string
* to
) const;
638 // Relocate a section.
640 relocate_section(const Relocate_info
<size
, big_endian
>*,
641 unsigned int sh_type
,
642 const unsigned char* prelocs
,
644 Output_section
* output_section
,
645 bool needs_special_offset_handling
,
647 Address view_address
,
648 section_size_type view_size
,
649 const Reloc_symbol_changes
*);
651 // Scan the relocs during a relocatable link.
653 scan_relocatable_relocs(Symbol_table
* symtab
,
655 Sized_relobj_file
<size
, big_endian
>* object
,
656 unsigned int data_shndx
,
657 unsigned int sh_type
,
658 const unsigned char* prelocs
,
660 Output_section
* output_section
,
661 bool needs_special_offset_handling
,
662 size_t local_symbol_count
,
663 const unsigned char* plocal_symbols
,
664 Relocatable_relocs
*);
666 // Scan the relocs for --emit-relocs.
668 emit_relocs_scan(Symbol_table
* symtab
,
670 Sized_relobj_file
<size
, big_endian
>* object
,
671 unsigned int data_shndx
,
672 unsigned int sh_type
,
673 const unsigned char* prelocs
,
675 Output_section
* output_section
,
676 bool needs_special_offset_handling
,
677 size_t local_symbol_count
,
678 const unsigned char* plocal_syms
,
679 Relocatable_relocs
* rr
);
681 // Emit relocations for a section.
683 relocate_relocs(const Relocate_info
<size
, big_endian
>*,
684 unsigned int sh_type
,
685 const unsigned char* prelocs
,
687 Output_section
* output_section
,
688 typename
elfcpp::Elf_types
<size
>::Elf_Off
689 offset_in_output_section
,
691 Address view_address
,
693 unsigned char* reloc_view
,
694 section_size_type reloc_view_size
);
696 // Return whether SYM is defined by the ABI.
698 do_is_defined_by_abi(const Symbol
* sym
) const
700 return strcmp(sym
->name(), "__tls_get_addr") == 0;
703 // Return the size of the GOT section.
707 gold_assert(this->got_
!= NULL
);
708 return this->got_
->data_size();
711 // Get the PLT section.
712 const Output_data_plt_powerpc
<size
, big_endian
>*
715 gold_assert(this->plt_
!= NULL
);
719 // Get the IPLT section.
720 const Output_data_plt_powerpc
<size
, big_endian
>*
723 gold_assert(this->iplt_
!= NULL
);
727 // Get the .glink section.
728 const Output_data_glink
<size
, big_endian
>*
729 glink_section() const
731 gold_assert(this->glink_
!= NULL
);
735 Output_data_glink
<size
, big_endian
>*
738 gold_assert(this->glink_
!= NULL
);
742 bool has_glink() const
743 { return this->glink_
!= NULL
; }
745 // Get the GOT section.
746 const Output_data_got_powerpc
<size
, big_endian
>*
749 gold_assert(this->got_
!= NULL
);
753 // Get the GOT section, creating it if necessary.
754 Output_data_got_powerpc
<size
, big_endian
>*
755 got_section(Symbol_table
*, Layout
*);
758 do_make_elf_object(const std::string
&, Input_file
*, off_t
,
759 const elfcpp::Ehdr
<size
, big_endian
>&);
761 // Return the number of entries in the GOT.
763 got_entry_count() const
765 if (this->got_
== NULL
)
767 return this->got_size() / (size
/ 8);
770 // Return the number of entries in the PLT.
772 plt_entry_count() const;
774 // Return the offset of the first non-reserved PLT entry.
776 first_plt_entry_offset() const
780 if (this->abiversion() >= 2)
785 // Return the size of each PLT entry.
787 plt_entry_size() const
791 if (this->abiversion() >= 2)
796 Output_data_save_res
<size
, big_endian
>*
797 savres_section() const
799 return this->savres_section_
;
802 // Add any special sections for this symbol to the gc work list.
803 // For powerpc64, this adds the code section of a function
806 do_gc_mark_symbol(Symbol_table
* symtab
, Symbol
* sym
) const;
808 // Handle target specific gc actions when adding a gc reference from
809 // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX
810 // and DST_OFF. For powerpc64, this adds a referenc to the code
811 // section of a function descriptor.
813 do_gc_add_reference(Symbol_table
* symtab
,
815 unsigned int src_shndx
,
817 unsigned int dst_shndx
,
818 Address dst_off
) const;
820 typedef std::vector
<Stub_table
<size
, big_endian
>*> Stub_tables
;
823 { return this->stub_tables_
; }
825 const Output_data_brlt_powerpc
<size
, big_endian
>*
827 { return this->brlt_section_
; }
830 add_branch_lookup_table(Address to
)
832 unsigned int off
= this->branch_lookup_table_
.size() * (size
/ 8);
833 this->branch_lookup_table_
.insert(std::make_pair(to
, off
));
837 find_branch_lookup_table(Address to
)
839 typename
Branch_lookup_table::const_iterator p
840 = this->branch_lookup_table_
.find(to
);
841 return p
== this->branch_lookup_table_
.end() ? invalid_address
: p
->second
;
845 write_branch_lookup_table(unsigned char *oview
)
847 for (typename
Branch_lookup_table::const_iterator p
848 = this->branch_lookup_table_
.begin();
849 p
!= this->branch_lookup_table_
.end();
852 elfcpp::Swap
<size
, big_endian
>::writeval(oview
+ p
->second
, p
->first
);
857 plt_thread_safe() const
858 { return this->plt_thread_safe_
; }
862 { return this->processor_specific_flags() & elfcpp::EF_PPC64_ABI
; }
865 set_abiversion (int ver
)
867 elfcpp::Elf_Word flags
= this->processor_specific_flags();
868 flags
&= ~elfcpp::EF_PPC64_ABI
;
869 flags
|= ver
& elfcpp::EF_PPC64_ABI
;
870 this->set_processor_specific_flags(flags
);
873 // Offset to to save stack slot
876 { return this->abiversion() < 2 ? 40 : 24; }
892 : tls_get_addr_(NOT_EXPECTED
),
893 relinfo_(NULL
), relnum_(0), r_offset_(0)
898 if (this->tls_get_addr_
!= NOT_EXPECTED
)
905 if (this->relinfo_
!= NULL
)
906 gold_error_at_location(this->relinfo_
, this->relnum_
, this->r_offset_
,
907 _("missing expected __tls_get_addr call"));
911 expect_tls_get_addr_call(
912 const Relocate_info
<size
, big_endian
>* relinfo
,
916 this->tls_get_addr_
= EXPECTED
;
917 this->relinfo_
= relinfo
;
918 this->relnum_
= relnum
;
919 this->r_offset_
= r_offset
;
923 expect_tls_get_addr_call()
924 { this->tls_get_addr_
= EXPECTED
; }
927 skip_next_tls_get_addr_call()
928 {this->tls_get_addr_
= SKIP
; }
931 maybe_skip_tls_get_addr_call(unsigned int r_type
, const Symbol
* gsym
)
933 bool is_tls_call
= ((r_type
== elfcpp::R_POWERPC_REL24
934 || r_type
== elfcpp::R_PPC_PLTREL24
)
936 && strcmp(gsym
->name(), "__tls_get_addr") == 0);
937 Tls_get_addr last_tls
= this->tls_get_addr_
;
938 this->tls_get_addr_
= NOT_EXPECTED
;
939 if (is_tls_call
&& last_tls
!= EXPECTED
)
941 else if (!is_tls_call
&& last_tls
!= NOT_EXPECTED
)
950 // What we're up to regarding calls to __tls_get_addr.
951 // On powerpc, the branch and link insn making a call to
952 // __tls_get_addr is marked with a relocation, R_PPC64_TLSGD,
953 // R_PPC64_TLSLD, R_PPC_TLSGD or R_PPC_TLSLD, in addition to the
954 // usual R_POWERPC_REL24 or R_PPC_PLTREL25 relocation on a call.
955 // The marker relocation always comes first, and has the same
956 // symbol as the reloc on the insn setting up the __tls_get_addr
957 // argument. This ties the arg setup insn with the call insn,
958 // allowing ld to safely optimize away the call. We check that
959 // every call to __tls_get_addr has a marker relocation, and that
960 // every marker relocation is on a call to __tls_get_addr.
961 Tls_get_addr tls_get_addr_
;
962 // Info about the last reloc for error message.
963 const Relocate_info
<size
, big_endian
>* relinfo_
;
968 // The class which scans relocations.
969 class Scan
: protected Track_tls
972 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
975 : Track_tls(), issued_non_pic_error_(false)
979 get_reference_flags(unsigned int r_type
, const Target_powerpc
* target
);
982 local(Symbol_table
* symtab
, Layout
* layout
, Target_powerpc
* target
,
983 Sized_relobj_file
<size
, big_endian
>* object
,
984 unsigned int data_shndx
,
985 Output_section
* output_section
,
986 const elfcpp::Rela
<size
, big_endian
>& reloc
, unsigned int r_type
,
987 const elfcpp::Sym
<size
, big_endian
>& lsym
,
991 global(Symbol_table
* symtab
, Layout
* layout
, Target_powerpc
* target
,
992 Sized_relobj_file
<size
, big_endian
>* object
,
993 unsigned int data_shndx
,
994 Output_section
* output_section
,
995 const elfcpp::Rela
<size
, big_endian
>& reloc
, unsigned int r_type
,
999 local_reloc_may_be_function_pointer(Symbol_table
* , Layout
* ,
1001 Sized_relobj_file
<size
, big_endian
>* relobj
,
1004 const elfcpp::Rela
<size
, big_endian
>& ,
1005 unsigned int r_type
,
1006 const elfcpp::Sym
<size
, big_endian
>&)
1008 // PowerPC64 .opd is not folded, so any identical function text
1009 // may be folded and we'll still keep function addresses distinct.
1010 // That means no reloc is of concern here.
1013 Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
1014 <Powerpc_relobj
<size
, big_endian
>*>(relobj
);
1015 if (ppcobj
->abiversion() == 1)
1018 // For 32-bit and ELFv2, conservatively assume anything but calls to
1019 // function code might be taking the address of the function.
1020 return !is_branch_reloc(r_type
);
1024 global_reloc_may_be_function_pointer(Symbol_table
* , Layout
* ,
1026 Sized_relobj_file
<size
, big_endian
>* relobj
,
1029 const elfcpp::Rela
<size
, big_endian
>& ,
1030 unsigned int r_type
,
1036 Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
1037 <Powerpc_relobj
<size
, big_endian
>*>(relobj
);
1038 if (ppcobj
->abiversion() == 1)
1041 return !is_branch_reloc(r_type
);
1045 reloc_needs_plt_for_ifunc(Target_powerpc
<size
, big_endian
>* target
,
1046 Sized_relobj_file
<size
, big_endian
>* object
,
1047 unsigned int r_type
, bool report_err
);
1051 unsupported_reloc_local(Sized_relobj_file
<size
, big_endian
>*,
1052 unsigned int r_type
);
1055 unsupported_reloc_global(Sized_relobj_file
<size
, big_endian
>*,
1056 unsigned int r_type
, Symbol
*);
1059 generate_tls_call(Symbol_table
* symtab
, Layout
* layout
,
1060 Target_powerpc
* target
);
1063 check_non_pic(Relobj
*, unsigned int r_type
);
1065 // Whether we have issued an error about a non-PIC compilation.
1066 bool issued_non_pic_error_
;
1070 symval_for_branch(const Symbol_table
* symtab
,
1071 const Sized_symbol
<size
>* gsym
,
1072 Powerpc_relobj
<size
, big_endian
>* object
,
1073 Address
*value
, unsigned int *dest_shndx
);
1075 // The class which implements relocation.
1076 class Relocate
: protected Track_tls
1079 // Use 'at' branch hints when true, 'y' when false.
1080 // FIXME maybe: set this with an option.
1081 static const bool is_isa_v2
= true;
1087 // Do a relocation. Return false if the caller should not issue
1088 // any warnings about this relocation.
1090 relocate(const Relocate_info
<size
, big_endian
>*, unsigned int,
1091 Target_powerpc
*, Output_section
*, size_t, const unsigned char*,
1092 const Sized_symbol
<size
>*, const Symbol_value
<size
>*,
1093 unsigned char*, typename
elfcpp::Elf_types
<size
>::Elf_Addr
,
1097 class Relocate_comdat_behavior
1100 // Decide what the linker should do for relocations that refer to
1101 // discarded comdat sections.
1102 inline Comdat_behavior
1103 get(const char* name
)
1105 gold::Default_comdat_behavior default_behavior
;
1106 Comdat_behavior ret
= default_behavior
.get(name
);
1107 if (ret
== CB_WARNING
)
1110 && (strcmp(name
, ".fixup") == 0
1111 || strcmp(name
, ".got2") == 0))
1114 && (strcmp(name
, ".opd") == 0
1115 || strcmp(name
, ".toc") == 0
1116 || strcmp(name
, ".toc1") == 0))
1123 // Optimize the TLS relocation type based on what we know about the
1124 // symbol. IS_FINAL is true if the final address of this symbol is
1125 // known at link time.
1127 tls::Tls_optimization
1128 optimize_tls_gd(bool is_final
)
1130 // If we are generating a shared library, then we can't do anything
1132 if (parameters
->options().shared())
1133 return tls::TLSOPT_NONE
;
1136 return tls::TLSOPT_TO_IE
;
1137 return tls::TLSOPT_TO_LE
;
1140 tls::Tls_optimization
1143 if (parameters
->options().shared())
1144 return tls::TLSOPT_NONE
;
1146 return tls::TLSOPT_TO_LE
;
1149 tls::Tls_optimization
1150 optimize_tls_ie(bool is_final
)
1152 if (!is_final
|| parameters
->options().shared())
1153 return tls::TLSOPT_NONE
;
1155 return tls::TLSOPT_TO_LE
;
1160 make_glink_section(Layout
*);
1162 // Create the PLT section.
1164 make_plt_section(Symbol_table
*, Layout
*);
1167 make_iplt_section(Symbol_table
*, Layout
*);
1170 make_brlt_section(Layout
*);
1172 // Create a PLT entry for a global symbol.
1174 make_plt_entry(Symbol_table
*, Layout
*, Symbol
*);
1176 // Create a PLT entry for a local IFUNC symbol.
1178 make_local_ifunc_plt_entry(Symbol_table
*, Layout
*,
1179 Sized_relobj_file
<size
, big_endian
>*,
1183 // Create a GOT entry for local dynamic __tls_get_addr.
1185 tlsld_got_offset(Symbol_table
* symtab
, Layout
* layout
,
1186 Sized_relobj_file
<size
, big_endian
>* object
);
1189 tlsld_got_offset() const
1191 return this->tlsld_got_offset_
;
1194 // Get the dynamic reloc section, creating it if necessary.
1196 rela_dyn_section(Layout
*);
1198 // Similarly, but for ifunc symbols get the one for ifunc.
1200 rela_dyn_section(Symbol_table
*, Layout
*, bool for_ifunc
);
1202 // Copy a relocation against a global symbol.
1204 copy_reloc(Symbol_table
* symtab
, Layout
* layout
,
1205 Sized_relobj_file
<size
, big_endian
>* object
,
1206 unsigned int shndx
, Output_section
* output_section
,
1207 Symbol
* sym
, const elfcpp::Rela
<size
, big_endian
>& reloc
)
1209 unsigned int r_type
= elfcpp::elf_r_type
<size
>(reloc
.get_r_info());
1210 this->copy_relocs_
.copy_reloc(symtab
, layout
,
1211 symtab
->get_sized_symbol
<size
>(sym
),
1212 object
, shndx
, output_section
,
1213 r_type
, reloc
.get_r_offset(),
1214 reloc
.get_r_addend(),
1215 this->rela_dyn_section(layout
));
1218 // Look over all the input sections, deciding where to place stubs.
1220 group_sections(Layout
*, const Task
*, bool);
1222 // Sort output sections by address.
1223 struct Sort_sections
1226 operator()(const Output_section
* sec1
, const Output_section
* sec2
)
1227 { return sec1
->address() < sec2
->address(); }
1233 Branch_info(Powerpc_relobj
<size
, big_endian
>* ppc_object
,
1234 unsigned int data_shndx
,
1236 unsigned int r_type
,
1239 : object_(ppc_object
), shndx_(data_shndx
), offset_(r_offset
),
1240 r_type_(r_type
), r_sym_(r_sym
), addend_(addend
)
1246 // If this branch needs a plt call stub, or a long branch stub, make one.
1248 make_stub(Stub_table
<size
, big_endian
>*,
1249 Stub_table
<size
, big_endian
>*,
1250 Symbol_table
*) const;
1253 // The branch location..
1254 Powerpc_relobj
<size
, big_endian
>* object_
;
1255 unsigned int shndx_
;
1257 // ..and the branch type and destination.
1258 unsigned int r_type_
;
1259 unsigned int r_sym_
;
1263 // Information about this specific target which we pass to the
1264 // general Target structure.
1265 static Target::Target_info powerpc_info
;
1267 // The types of GOT entries needed for this platform.
1268 // These values are exposed to the ABI in an incremental link.
1269 // Do not renumber existing values without changing the version
1270 // number of the .gnu_incremental_inputs section.
1274 GOT_TYPE_TLSGD
, // double entry for @got@tlsgd
1275 GOT_TYPE_DTPREL
, // entry for @got@dtprel
1276 GOT_TYPE_TPREL
// entry for @got@tprel
1280 Output_data_got_powerpc
<size
, big_endian
>* got_
;
1281 // The PLT section. This is a container for a table of addresses,
1282 // and their relocations. Each address in the PLT has a dynamic
1283 // relocation (R_*_JMP_SLOT) and each address will have a
1284 // corresponding entry in .glink for lazy resolution of the PLT.
1285 // ppc32 initialises the PLT to point at the .glink entry, while
1286 // ppc64 leaves this to ld.so. To make a call via the PLT, the
1287 // linker adds a stub that loads the PLT entry into ctr then
1288 // branches to ctr. There may be more than one stub for each PLT
1289 // entry. DT_JMPREL points at the first PLT dynamic relocation and
1290 // DT_PLTRELSZ gives the total size of PLT dynamic relocations.
1291 Output_data_plt_powerpc
<size
, big_endian
>* plt_
;
1292 // The IPLT section. Like plt_, this is a container for a table of
1293 // addresses and their relocations, specifically for STT_GNU_IFUNC
1294 // functions that resolve locally (STT_GNU_IFUNC functions that
1295 // don't resolve locally go in PLT). Unlike plt_, these have no
1296 // entry in .glink for lazy resolution, and the relocation section
1297 // does not have a 1-1 correspondence with IPLT addresses. In fact,
1298 // the relocation section may contain relocations against
1299 // STT_GNU_IFUNC symbols at locations outside of IPLT. The
1300 // relocation section will appear at the end of other dynamic
1301 // relocations, so that ld.so applies these relocations after other
1302 // dynamic relocations. In a static executable, the relocation
1303 // section is emitted and marked with __rela_iplt_start and
1304 // __rela_iplt_end symbols.
1305 Output_data_plt_powerpc
<size
, big_endian
>* iplt_
;
1306 // Section holding long branch destinations.
1307 Output_data_brlt_powerpc
<size
, big_endian
>* brlt_section_
;
1308 // The .glink section.
1309 Output_data_glink
<size
, big_endian
>* glink_
;
1310 // The dynamic reloc section.
1311 Reloc_section
* rela_dyn_
;
1312 // Relocs saved to avoid a COPY reloc.
1313 Copy_relocs
<elfcpp::SHT_RELA
, size
, big_endian
> copy_relocs_
;
1314 // Offset of the GOT entry for local dynamic __tls_get_addr calls.
1315 unsigned int tlsld_got_offset_
;
1317 Stub_tables stub_tables_
;
1318 typedef Unordered_map
<Address
, unsigned int> Branch_lookup_table
;
1319 Branch_lookup_table branch_lookup_table_
;
1321 typedef std::vector
<Branch_info
> Branches
;
1322 Branches branch_info_
;
1324 bool plt_thread_safe_
;
1327 int relax_fail_count_
;
1328 int32_t stub_group_size_
;
1330 Output_data_save_res
<size
, big_endian
> *savres_section_
;
1334 Target::Target_info Target_powerpc
<32, true>::powerpc_info
=
1337 true, // is_big_endian
1338 elfcpp::EM_PPC
, // machine_code
1339 false, // has_make_symbol
1340 false, // has_resolve
1341 false, // has_code_fill
1342 true, // is_default_stack_executable
1343 false, // can_icf_inline_merge_sections
1345 "/usr/lib/ld.so.1", // dynamic_linker
1346 0x10000000, // default_text_segment_address
1347 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1348 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1349 false, // isolate_execinstr
1351 elfcpp::SHN_UNDEF
, // small_common_shndx
1352 elfcpp::SHN_UNDEF
, // large_common_shndx
1353 0, // small_common_section_flags
1354 0, // large_common_section_flags
1355 NULL
, // attributes_section
1356 NULL
, // attributes_vendor
1357 "_start", // entry_symbol_name
1358 32, // hash_entry_size
1362 Target::Target_info Target_powerpc
<32, false>::powerpc_info
=
1365 false, // is_big_endian
1366 elfcpp::EM_PPC
, // machine_code
1367 false, // has_make_symbol
1368 false, // has_resolve
1369 false, // has_code_fill
1370 true, // is_default_stack_executable
1371 false, // can_icf_inline_merge_sections
1373 "/usr/lib/ld.so.1", // dynamic_linker
1374 0x10000000, // default_text_segment_address
1375 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1376 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1377 false, // isolate_execinstr
1379 elfcpp::SHN_UNDEF
, // small_common_shndx
1380 elfcpp::SHN_UNDEF
, // large_common_shndx
1381 0, // small_common_section_flags
1382 0, // large_common_section_flags
1383 NULL
, // attributes_section
1384 NULL
, // attributes_vendor
1385 "_start", // entry_symbol_name
1386 32, // hash_entry_size
1390 Target::Target_info Target_powerpc
<64, true>::powerpc_info
=
1393 true, // is_big_endian
1394 elfcpp::EM_PPC64
, // machine_code
1395 false, // has_make_symbol
1396 false, // has_resolve
1397 false, // has_code_fill
1398 true, // is_default_stack_executable
1399 false, // can_icf_inline_merge_sections
1401 "/usr/lib/ld.so.1", // dynamic_linker
1402 0x10000000, // default_text_segment_address
1403 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1404 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1405 false, // isolate_execinstr
1407 elfcpp::SHN_UNDEF
, // small_common_shndx
1408 elfcpp::SHN_UNDEF
, // large_common_shndx
1409 0, // small_common_section_flags
1410 0, // large_common_section_flags
1411 NULL
, // attributes_section
1412 NULL
, // attributes_vendor
1413 "_start", // entry_symbol_name
1414 32, // hash_entry_size
1418 Target::Target_info Target_powerpc
<64, false>::powerpc_info
=
1421 false, // is_big_endian
1422 elfcpp::EM_PPC64
, // machine_code
1423 false, // has_make_symbol
1424 false, // has_resolve
1425 false, // has_code_fill
1426 true, // is_default_stack_executable
1427 false, // can_icf_inline_merge_sections
1429 "/usr/lib/ld.so.1", // dynamic_linker
1430 0x10000000, // default_text_segment_address
1431 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1432 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1433 false, // isolate_execinstr
1435 elfcpp::SHN_UNDEF
, // small_common_shndx
1436 elfcpp::SHN_UNDEF
, // large_common_shndx
1437 0, // small_common_section_flags
1438 0, // large_common_section_flags
1439 NULL
, // attributes_section
1440 NULL
, // attributes_vendor
1441 "_start", // entry_symbol_name
1442 32, // hash_entry_size
1446 is_branch_reloc(unsigned int r_type
)
1448 return (r_type
== elfcpp::R_POWERPC_REL24
1449 || r_type
== elfcpp::R_PPC_PLTREL24
1450 || r_type
== elfcpp::R_PPC_LOCAL24PC
1451 || r_type
== elfcpp::R_POWERPC_REL14
1452 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
1453 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
1454 || r_type
== elfcpp::R_POWERPC_ADDR24
1455 || r_type
== elfcpp::R_POWERPC_ADDR14
1456 || r_type
== elfcpp::R_POWERPC_ADDR14_BRTAKEN
1457 || r_type
== elfcpp::R_POWERPC_ADDR14_BRNTAKEN
);
1460 // If INSN is an opcode that may be used with an @tls operand, return
1461 // the transformed insn for TLS optimisation, otherwise return 0. If
1462 // REG is non-zero only match an insn with RB or RA equal to REG.
1464 at_tls_transform(uint32_t insn
, unsigned int reg
)
1466 if ((insn
& (0x3f << 26)) != 31 << 26)
1470 if (reg
== 0 || ((insn
>> 11) & 0x1f) == reg
)
1471 rtra
= insn
& ((1 << 26) - (1 << 16));
1472 else if (((insn
>> 16) & 0x1f) == reg
)
1473 rtra
= (insn
& (0x1f << 21)) | ((insn
& (0x1f << 11)) << 5);
1477 if ((insn
& (0x3ff << 1)) == 266 << 1)
1480 else if ((insn
& (0x1f << 1)) == 23 << 1
1481 && ((insn
& (0x1f << 6)) < 14 << 6
1482 || ((insn
& (0x1f << 6)) >= 16 << 6
1483 && (insn
& (0x1f << 6)) < 24 << 6)))
1484 // load and store indexed -> dform
1485 insn
= (32 | ((insn
>> 6) & 0x1f)) << 26;
1486 else if ((insn
& (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
1487 // ldx, ldux, stdx, stdux -> ld, ldu, std, stdu
1488 insn
= ((58 | ((insn
>> 6) & 4)) << 26) | ((insn
>> 6) & 1);
1489 else if ((insn
& (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
1491 insn
= (58 << 26) | 2;
1499 template<int size
, bool big_endian
>
1500 class Powerpc_relocate_functions
1520 typedef Powerpc_relocate_functions
<size
, big_endian
> This
;
1521 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
1522 typedef typename
elfcpp::Elf_types
<size
>::Elf_Swxword SignedAddress
;
1524 template<int valsize
>
1526 has_overflow_signed(Address value
)
1528 // limit = 1 << (valsize - 1) without shift count exceeding size of type
1529 Address limit
= static_cast<Address
>(1) << ((valsize
- 1) >> 1);
1530 limit
<<= ((valsize
- 1) >> 1);
1531 limit
<<= ((valsize
- 1) - 2 * ((valsize
- 1) >> 1));
1532 return value
+ limit
> (limit
<< 1) - 1;
1535 template<int valsize
>
1537 has_overflow_unsigned(Address value
)
1539 Address limit
= static_cast<Address
>(1) << ((valsize
- 1) >> 1);
1540 limit
<<= ((valsize
- 1) >> 1);
1541 limit
<<= ((valsize
- 1) - 2 * ((valsize
- 1) >> 1));
1542 return value
> (limit
<< 1) - 1;
1545 template<int valsize
>
1547 has_overflow_bitfield(Address value
)
1549 return (has_overflow_unsigned
<valsize
>(value
)
1550 && has_overflow_signed
<valsize
>(value
));
1553 template<int valsize
>
1554 static inline Status
1555 overflowed(Address value
, Overflow_check overflow
)
1557 if (overflow
== CHECK_SIGNED
)
1559 if (has_overflow_signed
<valsize
>(value
))
1560 return STATUS_OVERFLOW
;
1562 else if (overflow
== CHECK_UNSIGNED
)
1564 if (has_overflow_unsigned
<valsize
>(value
))
1565 return STATUS_OVERFLOW
;
1567 else if (overflow
== CHECK_BITFIELD
)
1569 if (has_overflow_bitfield
<valsize
>(value
))
1570 return STATUS_OVERFLOW
;
1575 // Do a simple RELA relocation
1576 template<int fieldsize
, int valsize
>
1577 static inline Status
1578 rela(unsigned char* view
, Address value
, Overflow_check overflow
)
1580 typedef typename
elfcpp::Swap
<fieldsize
, big_endian
>::Valtype Valtype
;
1581 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
1582 elfcpp::Swap
<fieldsize
, big_endian
>::writeval(wv
, value
);
1583 return overflowed
<valsize
>(value
, overflow
);
1586 template<int fieldsize
, int valsize
>
1587 static inline Status
1588 rela(unsigned char* view
,
1589 unsigned int right_shift
,
1590 typename
elfcpp::Valtype_base
<fieldsize
>::Valtype dst_mask
,
1592 Overflow_check overflow
)
1594 typedef typename
elfcpp::Swap
<fieldsize
, big_endian
>::Valtype Valtype
;
1595 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
1596 Valtype val
= elfcpp::Swap
<fieldsize
, big_endian
>::readval(wv
);
1597 Valtype reloc
= value
>> right_shift
;
1600 elfcpp::Swap
<fieldsize
, big_endian
>::writeval(wv
, val
| reloc
);
1601 return overflowed
<valsize
>(value
>> right_shift
, overflow
);
1604 // Do a simple RELA relocation, unaligned.
1605 template<int fieldsize
, int valsize
>
1606 static inline Status
1607 rela_ua(unsigned char* view
, Address value
, Overflow_check overflow
)
1609 elfcpp::Swap_unaligned
<fieldsize
, big_endian
>::writeval(view
, value
);
1610 return overflowed
<valsize
>(value
, overflow
);
1613 template<int fieldsize
, int valsize
>
1614 static inline Status
1615 rela_ua(unsigned char* view
,
1616 unsigned int right_shift
,
1617 typename
elfcpp::Valtype_base
<fieldsize
>::Valtype dst_mask
,
1619 Overflow_check overflow
)
1621 typedef typename
elfcpp::Swap_unaligned
<fieldsize
, big_endian
>::Valtype
1623 Valtype val
= elfcpp::Swap
<fieldsize
, big_endian
>::readval(view
);
1624 Valtype reloc
= value
>> right_shift
;
1627 elfcpp::Swap_unaligned
<fieldsize
, big_endian
>::writeval(view
, val
| reloc
);
1628 return overflowed
<valsize
>(value
>> right_shift
, overflow
);
1632 // R_PPC64_ADDR64: (Symbol + Addend)
1634 addr64(unsigned char* view
, Address value
)
1635 { This::template rela
<64,64>(view
, value
, CHECK_NONE
); }
1637 // R_PPC64_UADDR64: (Symbol + Addend) unaligned
1639 addr64_u(unsigned char* view
, Address value
)
1640 { This::template rela_ua
<64,64>(view
, value
, CHECK_NONE
); }
1642 // R_POWERPC_ADDR32: (Symbol + Addend)
1643 static inline Status
1644 addr32(unsigned char* view
, Address value
, Overflow_check overflow
)
1645 { return This::template rela
<32,32>(view
, value
, overflow
); }
1647 // R_POWERPC_UADDR32: (Symbol + Addend) unaligned
1648 static inline Status
1649 addr32_u(unsigned char* view
, Address value
, Overflow_check overflow
)
1650 { return This::template rela_ua
<32,32>(view
, value
, overflow
); }
1652 // R_POWERPC_ADDR24: (Symbol + Addend) & 0x3fffffc
1653 static inline Status
1654 addr24(unsigned char* view
, Address value
, Overflow_check overflow
)
1656 Status stat
= This::template rela
<32,26>(view
, 0, 0x03fffffc,
1658 if (overflow
!= CHECK_NONE
&& (value
& 3) != 0)
1659 stat
= STATUS_OVERFLOW
;
1663 // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff
1664 static inline Status
1665 addr16(unsigned char* view
, Address value
, Overflow_check overflow
)
1666 { return This::template rela
<16,16>(view
, value
, overflow
); }
1668 // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff, unaligned
1669 static inline Status
1670 addr16_u(unsigned char* view
, Address value
, Overflow_check overflow
)
1671 { return This::template rela_ua
<16,16>(view
, value
, overflow
); }
1673 // R_POWERPC_ADDR16_DS: (Symbol + Addend) & 0xfffc
1674 static inline Status
1675 addr16_ds(unsigned char* view
, Address value
, Overflow_check overflow
)
1677 Status stat
= This::template rela
<16,16>(view
, 0, 0xfffc, value
, overflow
);
1678 if ((value
& 3) != 0)
1679 stat
= STATUS_OVERFLOW
;
1683 // R_POWERPC_ADDR16_DQ: (Symbol + Addend) & 0xfff0
1684 static inline Status
1685 addr16_dq(unsigned char* view
, Address value
, Overflow_check overflow
)
1687 Status stat
= This::template rela
<16,16>(view
, 0, 0xfff0, value
, overflow
);
1688 if ((value
& 15) != 0)
1689 stat
= STATUS_OVERFLOW
;
1693 // R_POWERPC_ADDR16_HI: ((Symbol + Addend) >> 16) & 0xffff
1695 addr16_hi(unsigned char* view
, Address value
)
1696 { This::template rela
<16,16>(view
, 16, 0xffff, value
, CHECK_NONE
); }
1698 // R_POWERPC_ADDR16_HA: ((Symbol + Addend + 0x8000) >> 16) & 0xffff
1700 addr16_ha(unsigned char* view
, Address value
)
1701 { This::addr16_hi(view
, value
+ 0x8000); }
1703 // R_POWERPC_ADDR16_HIGHER: ((Symbol + Addend) >> 32) & 0xffff
1705 addr16_hi2(unsigned char* view
, Address value
)
1706 { This::template rela
<16,16>(view
, 32, 0xffff, value
, CHECK_NONE
); }
1708 // R_POWERPC_ADDR16_HIGHERA: ((Symbol + Addend + 0x8000) >> 32) & 0xffff
1710 addr16_ha2(unsigned char* view
, Address value
)
1711 { This::addr16_hi2(view
, value
+ 0x8000); }
1713 // R_POWERPC_ADDR16_HIGHEST: ((Symbol + Addend) >> 48) & 0xffff
1715 addr16_hi3(unsigned char* view
, Address value
)
1716 { This::template rela
<16,16>(view
, 48, 0xffff, value
, CHECK_NONE
); }
1718 // R_POWERPC_ADDR16_HIGHESTA: ((Symbol + Addend + 0x8000) >> 48) & 0xffff
1720 addr16_ha3(unsigned char* view
, Address value
)
1721 { This::addr16_hi3(view
, value
+ 0x8000); }
1723 // R_POWERPC_ADDR14: (Symbol + Addend) & 0xfffc
1724 static inline Status
1725 addr14(unsigned char* view
, Address value
, Overflow_check overflow
)
1727 Status stat
= This::template rela
<32,16>(view
, 0, 0xfffc, value
, overflow
);
1728 if (overflow
!= CHECK_NONE
&& (value
& 3) != 0)
1729 stat
= STATUS_OVERFLOW
;
1733 // R_POWERPC_REL16DX_HA
1734 static inline Status
1735 addr16dx_ha(unsigned char *view
, Address value
, Overflow_check overflow
)
1737 typedef typename
elfcpp::Swap
<32, big_endian
>::Valtype Valtype
;
1738 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
1739 Valtype val
= elfcpp::Swap
<32, big_endian
>::readval(wv
);
1741 value
= static_cast<SignedAddress
>(value
) >> 16;
1742 val
|= (value
& 0xffc1) | ((value
& 0x3e) << 15);
1743 elfcpp::Swap
<32, big_endian
>::writeval(wv
, val
);
1744 return overflowed
<16>(value
, overflow
);
1748 // Set ABI version for input and output.
1750 template<int size
, bool big_endian
>
1752 Powerpc_relobj
<size
, big_endian
>::set_abiversion(int ver
)
1754 this->e_flags_
|= ver
;
1755 if (this->abiversion() != 0)
1757 Target_powerpc
<size
, big_endian
>* target
=
1758 static_cast<Target_powerpc
<size
, big_endian
>*>(
1759 parameters
->sized_target
<size
, big_endian
>());
1760 if (target
->abiversion() == 0)
1761 target
->set_abiversion(this->abiversion());
1762 else if (target
->abiversion() != this->abiversion())
1763 gold_error(_("%s: ABI version %d is not compatible "
1764 "with ABI version %d output"),
1765 this->name().c_str(),
1766 this->abiversion(), target
->abiversion());
1771 // Stash away the index of .got2 or .opd in a relocatable object, if
1772 // such a section exists.
1774 template<int size
, bool big_endian
>
1776 Powerpc_relobj
<size
, big_endian
>::do_find_special_sections(
1777 Read_symbols_data
* sd
)
1779 const unsigned char* const pshdrs
= sd
->section_headers
->data();
1780 const unsigned char* namesu
= sd
->section_names
->data();
1781 const char* names
= reinterpret_cast<const char*>(namesu
);
1782 section_size_type names_size
= sd
->section_names_size
;
1783 const unsigned char* s
;
1785 s
= this->template find_shdr
<size
, big_endian
>(pshdrs
,
1786 size
== 32 ? ".got2" : ".opd",
1787 names
, names_size
, NULL
);
1790 unsigned int ndx
= (s
- pshdrs
) / elfcpp::Elf_sizes
<size
>::shdr_size
;
1791 this->special_
= ndx
;
1794 if (this->abiversion() == 0)
1795 this->set_abiversion(1);
1796 else if (this->abiversion() > 1)
1797 gold_error(_("%s: .opd invalid in abiv%d"),
1798 this->name().c_str(), this->abiversion());
1801 return Sized_relobj_file
<size
, big_endian
>::do_find_special_sections(sd
);
1804 // Examine .rela.opd to build info about function entry points.
1806 template<int size
, bool big_endian
>
1808 Powerpc_relobj
<size
, big_endian
>::scan_opd_relocs(
1810 const unsigned char* prelocs
,
1811 const unsigned char* plocal_syms
)
1815 typedef typename Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::Reloc
1817 const int reloc_size
1818 = Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
1819 const int sym_size
= elfcpp::Elf_sizes
<size
>::sym_size
;
1820 Address expected_off
= 0;
1821 bool regular
= true;
1822 unsigned int opd_ent_size
= 0;
1824 for (size_t i
= 0; i
< reloc_count
; ++i
, prelocs
+= reloc_size
)
1826 Reltype
reloc(prelocs
);
1827 typename
elfcpp::Elf_types
<size
>::Elf_WXword r_info
1828 = reloc
.get_r_info();
1829 unsigned int r_type
= elfcpp::elf_r_type
<size
>(r_info
);
1830 if (r_type
== elfcpp::R_PPC64_ADDR64
)
1832 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(r_info
);
1833 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
;
1836 if (r_sym
< this->local_symbol_count())
1838 typename
elfcpp::Sym
<size
, big_endian
>
1839 lsym(plocal_syms
+ r_sym
* sym_size
);
1840 shndx
= lsym
.get_st_shndx();
1841 shndx
= this->adjust_sym_shndx(r_sym
, shndx
, &is_ordinary
);
1842 value
= lsym
.get_st_value();
1845 shndx
= this->symbol_section_and_value(r_sym
, &value
,
1847 this->set_opd_ent(reloc
.get_r_offset(), shndx
,
1848 value
+ reloc
.get_r_addend());
1851 expected_off
= reloc
.get_r_offset();
1852 opd_ent_size
= expected_off
;
1854 else if (expected_off
!= reloc
.get_r_offset())
1856 expected_off
+= opd_ent_size
;
1858 else if (r_type
== elfcpp::R_PPC64_TOC
)
1860 if (expected_off
- opd_ent_size
+ 8 != reloc
.get_r_offset())
1865 gold_warning(_("%s: unexpected reloc type %u in .opd section"),
1866 this->name().c_str(), r_type
);
1870 if (reloc_count
<= 2)
1871 opd_ent_size
= this->section_size(this->opd_shndx());
1872 if (opd_ent_size
!= 24 && opd_ent_size
!= 16)
1876 gold_warning(_("%s: .opd is not a regular array of opd entries"),
1877 this->name().c_str());
1883 template<int size
, bool big_endian
>
1885 Powerpc_relobj
<size
, big_endian
>::do_read_relocs(Read_relocs_data
* rd
)
1887 Sized_relobj_file
<size
, big_endian
>::do_read_relocs(rd
);
1890 for (Read_relocs_data::Relocs_list::iterator p
= rd
->relocs
.begin();
1891 p
!= rd
->relocs
.end();
1894 if (p
->data_shndx
== this->opd_shndx())
1896 uint64_t opd_size
= this->section_size(this->opd_shndx());
1897 gold_assert(opd_size
== static_cast<size_t>(opd_size
));
1900 this->init_opd(opd_size
);
1901 this->scan_opd_relocs(p
->reloc_count
, p
->contents
->data(),
1902 rd
->local_symbols
->data());
1910 // Read the symbols then set up st_other vector.
1912 template<int size
, bool big_endian
>
1914 Powerpc_relobj
<size
, big_endian
>::do_read_symbols(Read_symbols_data
* sd
)
1916 this->base_read_symbols(sd
);
1919 const int shdr_size
= elfcpp::Elf_sizes
<size
>::shdr_size
;
1920 const unsigned char* const pshdrs
= sd
->section_headers
->data();
1921 const unsigned int loccount
= this->do_local_symbol_count();
1924 this->st_other_
.resize(loccount
);
1925 const int sym_size
= elfcpp::Elf_sizes
<size
>::sym_size
;
1926 off_t locsize
= loccount
* sym_size
;
1927 const unsigned int symtab_shndx
= this->symtab_shndx();
1928 const unsigned char *psymtab
= pshdrs
+ symtab_shndx
* shdr_size
;
1929 typename
elfcpp::Shdr
<size
, big_endian
> shdr(psymtab
);
1930 const unsigned char* psyms
= this->get_view(shdr
.get_sh_offset(),
1931 locsize
, true, false);
1933 for (unsigned int i
= 1; i
< loccount
; ++i
, psyms
+= sym_size
)
1935 elfcpp::Sym
<size
, big_endian
> sym(psyms
);
1936 unsigned char st_other
= sym
.get_st_other();
1937 this->st_other_
[i
] = st_other
;
1938 if ((st_other
& elfcpp::STO_PPC64_LOCAL_MASK
) != 0)
1940 if (this->abiversion() == 0)
1941 this->set_abiversion(2);
1942 else if (this->abiversion() < 2)
1943 gold_error(_("%s: local symbol %d has invalid st_other"
1944 " for ABI version 1"),
1945 this->name().c_str(), i
);
1952 template<int size
, bool big_endian
>
1954 Powerpc_dynobj
<size
, big_endian
>::set_abiversion(int ver
)
1956 this->e_flags_
|= ver
;
1957 if (this->abiversion() != 0)
1959 Target_powerpc
<size
, big_endian
>* target
=
1960 static_cast<Target_powerpc
<size
, big_endian
>*>(
1961 parameters
->sized_target
<size
, big_endian
>());
1962 if (target
->abiversion() == 0)
1963 target
->set_abiversion(this->abiversion());
1964 else if (target
->abiversion() != this->abiversion())
1965 gold_error(_("%s: ABI version %d is not compatible "
1966 "with ABI version %d output"),
1967 this->name().c_str(),
1968 this->abiversion(), target
->abiversion());
1973 // Call Sized_dynobj::base_read_symbols to read the symbols then
1974 // read .opd from a dynamic object, filling in opd_ent_ vector,
1976 template<int size
, bool big_endian
>
1978 Powerpc_dynobj
<size
, big_endian
>::do_read_symbols(Read_symbols_data
* sd
)
1980 this->base_read_symbols(sd
);
1983 const int shdr_size
= elfcpp::Elf_sizes
<size
>::shdr_size
;
1984 const unsigned char* const pshdrs
= sd
->section_headers
->data();
1985 const unsigned char* namesu
= sd
->section_names
->data();
1986 const char* names
= reinterpret_cast<const char*>(namesu
);
1987 const unsigned char* s
= NULL
;
1988 const unsigned char* opd
;
1989 section_size_type opd_size
;
1991 // Find and read .opd section.
1994 s
= this->template find_shdr
<size
, big_endian
>(pshdrs
, ".opd", names
,
1995 sd
->section_names_size
,
2000 typename
elfcpp::Shdr
<size
, big_endian
> shdr(s
);
2001 if (shdr
.get_sh_type() == elfcpp::SHT_PROGBITS
2002 && (shdr
.get_sh_flags() & elfcpp::SHF_ALLOC
) != 0)
2004 if (this->abiversion() == 0)
2005 this->set_abiversion(1);
2006 else if (this->abiversion() > 1)
2007 gold_error(_("%s: .opd invalid in abiv%d"),
2008 this->name().c_str(), this->abiversion());
2010 this->opd_shndx_
= (s
- pshdrs
) / shdr_size
;
2011 this->opd_address_
= shdr
.get_sh_addr();
2012 opd_size
= convert_to_section_size_type(shdr
.get_sh_size());
2013 opd
= this->get_view(shdr
.get_sh_offset(), opd_size
,
2019 // Build set of executable sections.
2020 // Using a set is probably overkill. There is likely to be only
2021 // a few executable sections, typically .init, .text and .fini,
2022 // and they are generally grouped together.
2023 typedef std::set
<Sec_info
> Exec_sections
;
2024 Exec_sections exec_sections
;
2026 for (unsigned int i
= 1; i
< this->shnum(); ++i
, s
+= shdr_size
)
2028 typename
elfcpp::Shdr
<size
, big_endian
> shdr(s
);
2029 if (shdr
.get_sh_type() == elfcpp::SHT_PROGBITS
2030 && ((shdr
.get_sh_flags()
2031 & (elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
))
2032 == (elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
))
2033 && shdr
.get_sh_size() != 0)
2035 exec_sections
.insert(Sec_info(shdr
.get_sh_addr(),
2036 shdr
.get_sh_size(), i
));
2039 if (exec_sections
.empty())
2042 // Look over the OPD entries. This is complicated by the fact
2043 // that some binaries will use two-word entries while others
2044 // will use the standard three-word entries. In most cases
2045 // the third word (the environment pointer for languages like
2046 // Pascal) is unused and will be zero. If the third word is
2047 // used it should not be pointing into executable sections,
2049 this->init_opd(opd_size
);
2050 for (const unsigned char* p
= opd
; p
< opd
+ opd_size
; p
+= 8)
2052 typedef typename
elfcpp::Swap
<64, big_endian
>::Valtype Valtype
;
2053 const Valtype
* valp
= reinterpret_cast<const Valtype
*>(p
);
2054 Valtype val
= elfcpp::Swap
<64, big_endian
>::readval(valp
);
2056 // Chances are that this is the third word of an OPD entry.
2058 typename
Exec_sections::const_iterator e
2059 = exec_sections
.upper_bound(Sec_info(val
, 0, 0));
2060 if (e
!= exec_sections
.begin())
2063 if (e
->start
<= val
&& val
< e
->start
+ e
->len
)
2065 // We have an address in an executable section.
2066 // VAL ought to be the function entry, set it up.
2067 this->set_opd_ent(p
- opd
, e
->shndx
, val
);
2068 // Skip second word of OPD entry, the TOC pointer.
2072 // If we didn't match any executable sections, we likely
2073 // have a non-zero third word in the OPD entry.
2078 // Set up some symbols.
2080 template<int size
, bool big_endian
>
2082 Target_powerpc
<size
, big_endian
>::do_define_standard_symbols(
2083 Symbol_table
* symtab
,
2088 // Define _GLOBAL_OFFSET_TABLE_ to ensure it isn't seen as
2089 // undefined when scanning relocs (and thus requires
2090 // non-relative dynamic relocs). The proper value will be
2092 Symbol
*gotsym
= symtab
->lookup("_GLOBAL_OFFSET_TABLE_", NULL
);
2093 if (gotsym
!= NULL
&& gotsym
->is_undefined())
2095 Target_powerpc
<size
, big_endian
>* target
=
2096 static_cast<Target_powerpc
<size
, big_endian
>*>(
2097 parameters
->sized_target
<size
, big_endian
>());
2098 Output_data_got_powerpc
<size
, big_endian
>* got
2099 = target
->got_section(symtab
, layout
);
2100 symtab
->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL
,
2101 Symbol_table::PREDEFINED
,
2105 elfcpp::STV_HIDDEN
, 0,
2109 // Define _SDA_BASE_ at the start of the .sdata section + 32768.
2110 Symbol
*sdasym
= symtab
->lookup("_SDA_BASE_", NULL
);
2111 if (sdasym
!= NULL
&& sdasym
->is_undefined())
2113 Output_data_space
* sdata
= new Output_data_space(4, "** sdata");
2115 = layout
->add_output_section_data(".sdata", 0,
2117 | elfcpp::SHF_WRITE
,
2118 sdata
, ORDER_SMALL_DATA
, false);
2119 symtab
->define_in_output_data("_SDA_BASE_", NULL
,
2120 Symbol_table::PREDEFINED
,
2121 os
, 32768, 0, elfcpp::STT_OBJECT
,
2122 elfcpp::STB_LOCAL
, elfcpp::STV_HIDDEN
,
2128 // Define .TOC. as for 32-bit _GLOBAL_OFFSET_TABLE_
2129 Symbol
*gotsym
= symtab
->lookup(".TOC.", NULL
);
2130 if (gotsym
!= NULL
&& gotsym
->is_undefined())
2132 Target_powerpc
<size
, big_endian
>* target
=
2133 static_cast<Target_powerpc
<size
, big_endian
>*>(
2134 parameters
->sized_target
<size
, big_endian
>());
2135 Output_data_got_powerpc
<size
, big_endian
>* got
2136 = target
->got_section(symtab
, layout
);
2137 symtab
->define_in_output_data(".TOC.", NULL
,
2138 Symbol_table::PREDEFINED
,
2142 elfcpp::STV_HIDDEN
, 0,
2148 // Set up PowerPC target specific relobj.
2150 template<int size
, bool big_endian
>
2152 Target_powerpc
<size
, big_endian
>::do_make_elf_object(
2153 const std::string
& name
,
2154 Input_file
* input_file
,
2155 off_t offset
, const elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
2157 int et
= ehdr
.get_e_type();
2158 // ET_EXEC files are valid input for --just-symbols/-R,
2159 // and we treat them as relocatable objects.
2160 if (et
== elfcpp::ET_REL
2161 || (et
== elfcpp::ET_EXEC
&& input_file
->just_symbols()))
2163 Powerpc_relobj
<size
, big_endian
>* obj
=
2164 new Powerpc_relobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
);
2168 else if (et
== elfcpp::ET_DYN
)
2170 Powerpc_dynobj
<size
, big_endian
>* obj
=
2171 new Powerpc_dynobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
);
2177 gold_error(_("%s: unsupported ELF file type %d"), name
.c_str(), et
);
2182 template<int size
, bool big_endian
>
2183 class Output_data_got_powerpc
: public Output_data_got
<size
, big_endian
>
2186 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Valtype
;
2187 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true, size
, big_endian
> Rela_dyn
;
2189 Output_data_got_powerpc(Symbol_table
* symtab
, Layout
* layout
)
2190 : Output_data_got
<size
, big_endian
>(),
2191 symtab_(symtab
), layout_(layout
),
2192 header_ent_cnt_(size
== 32 ? 3 : 1),
2193 header_index_(size
== 32 ? 0x2000 : 0)
2196 this->set_addralign(256);
2199 // Override all the Output_data_got methods we use so as to first call
2202 add_global(Symbol
* gsym
, unsigned int got_type
)
2204 this->reserve_ent();
2205 return Output_data_got
<size
, big_endian
>::add_global(gsym
, got_type
);
2209 add_global_plt(Symbol
* gsym
, unsigned int got_type
)
2211 this->reserve_ent();
2212 return Output_data_got
<size
, big_endian
>::add_global_plt(gsym
, got_type
);
2216 add_global_tls(Symbol
* gsym
, unsigned int got_type
)
2217 { return this->add_global_plt(gsym
, got_type
); }
2220 add_global_with_rel(Symbol
* gsym
, unsigned int got_type
,
2221 Output_data_reloc_generic
* rel_dyn
, unsigned int r_type
)
2223 this->reserve_ent();
2224 Output_data_got
<size
, big_endian
>::
2225 add_global_with_rel(gsym
, got_type
, rel_dyn
, r_type
);
2229 add_global_pair_with_rel(Symbol
* gsym
, unsigned int got_type
,
2230 Output_data_reloc_generic
* rel_dyn
,
2231 unsigned int r_type_1
, unsigned int r_type_2
)
2233 this->reserve_ent(2);
2234 Output_data_got
<size
, big_endian
>::
2235 add_global_pair_with_rel(gsym
, got_type
, rel_dyn
, r_type_1
, r_type_2
);
2239 add_local(Relobj
* object
, unsigned int sym_index
, unsigned int got_type
)
2241 this->reserve_ent();
2242 return Output_data_got
<size
, big_endian
>::add_local(object
, sym_index
,
2247 add_local_plt(Relobj
* object
, unsigned int sym_index
, unsigned int got_type
)
2249 this->reserve_ent();
2250 return Output_data_got
<size
, big_endian
>::add_local_plt(object
, sym_index
,
2255 add_local_tls(Relobj
* object
, unsigned int sym_index
, unsigned int got_type
)
2256 { return this->add_local_plt(object
, sym_index
, got_type
); }
2259 add_local_tls_pair(Relobj
* object
, unsigned int sym_index
,
2260 unsigned int got_type
,
2261 Output_data_reloc_generic
* rel_dyn
,
2262 unsigned int r_type
)
2264 this->reserve_ent(2);
2265 Output_data_got
<size
, big_endian
>::
2266 add_local_tls_pair(object
, sym_index
, got_type
, rel_dyn
, r_type
);
2270 add_constant(Valtype constant
)
2272 this->reserve_ent();
2273 return Output_data_got
<size
, big_endian
>::add_constant(constant
);
2277 add_constant_pair(Valtype c1
, Valtype c2
)
2279 this->reserve_ent(2);
2280 return Output_data_got
<size
, big_endian
>::add_constant_pair(c1
, c2
);
2283 // Offset of _GLOBAL_OFFSET_TABLE_.
2287 return this->got_offset(this->header_index_
);
2290 // Offset of base used to access the GOT/TOC.
2291 // The got/toc pointer reg will be set to this value.
2293 got_base_offset(const Powerpc_relobj
<size
, big_endian
>* object
) const
2296 return this->g_o_t();
2298 return (this->output_section()->address()
2299 + object
->toc_base_offset()
2303 // Ensure our GOT has a header.
2305 set_final_data_size()
2307 if (this->header_ent_cnt_
!= 0)
2308 this->make_header();
2309 Output_data_got
<size
, big_endian
>::set_final_data_size();
2312 // First word of GOT header needs some values that are not
2313 // handled by Output_data_got so poke them in here.
2314 // For 32-bit, address of .dynamic, for 64-bit, address of TOCbase.
2316 do_write(Output_file
* of
)
2319 if (size
== 32 && this->layout_
->dynamic_data() != NULL
)
2320 val
= this->layout_
->dynamic_section()->address();
2322 val
= this->output_section()->address() + 0x8000;
2323 this->replace_constant(this->header_index_
, val
);
2324 Output_data_got
<size
, big_endian
>::do_write(of
);
2329 reserve_ent(unsigned int cnt
= 1)
2331 if (this->header_ent_cnt_
== 0)
2333 if (this->num_entries() + cnt
> this->header_index_
)
2334 this->make_header();
2340 this->header_ent_cnt_
= 0;
2341 this->header_index_
= this->num_entries();
2344 Output_data_got
<size
, big_endian
>::add_constant(0);
2345 Output_data_got
<size
, big_endian
>::add_constant(0);
2346 Output_data_got
<size
, big_endian
>::add_constant(0);
2348 // Define _GLOBAL_OFFSET_TABLE_ at the header
2349 Symbol
*gotsym
= this->symtab_
->lookup("_GLOBAL_OFFSET_TABLE_", NULL
);
2352 Sized_symbol
<size
>* sym
= static_cast<Sized_symbol
<size
>*>(gotsym
);
2353 sym
->set_value(this->g_o_t());
2356 this->symtab_
->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL
,
2357 Symbol_table::PREDEFINED
,
2358 this, this->g_o_t(), 0,
2361 elfcpp::STV_HIDDEN
, 0,
2365 Output_data_got
<size
, big_endian
>::add_constant(0);
2368 // Stashed pointers.
2369 Symbol_table
* symtab_
;
2373 unsigned int header_ent_cnt_
;
2374 // GOT header index.
2375 unsigned int header_index_
;
2378 // Get the GOT section, creating it if necessary.
2380 template<int size
, bool big_endian
>
2381 Output_data_got_powerpc
<size
, big_endian
>*
2382 Target_powerpc
<size
, big_endian
>::got_section(Symbol_table
* symtab
,
2385 if (this->got_
== NULL
)
2387 gold_assert(symtab
!= NULL
&& layout
!= NULL
);
2390 = new Output_data_got_powerpc
<size
, big_endian
>(symtab
, layout
);
2392 layout
->add_output_section_data(".got", elfcpp::SHT_PROGBITS
,
2393 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
2394 this->got_
, ORDER_DATA
, false);
2400 // Get the dynamic reloc section, creating it if necessary.
2402 template<int size
, bool big_endian
>
2403 typename Target_powerpc
<size
, big_endian
>::Reloc_section
*
2404 Target_powerpc
<size
, big_endian
>::rela_dyn_section(Layout
* layout
)
2406 if (this->rela_dyn_
== NULL
)
2408 gold_assert(layout
!= NULL
);
2409 this->rela_dyn_
= new Reloc_section(parameters
->options().combreloc());
2410 layout
->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA
,
2411 elfcpp::SHF_ALLOC
, this->rela_dyn_
,
2412 ORDER_DYNAMIC_RELOCS
, false);
2414 return this->rela_dyn_
;
2417 // Similarly, but for ifunc symbols get the one for ifunc.
2419 template<int size
, bool big_endian
>
2420 typename Target_powerpc
<size
, big_endian
>::Reloc_section
*
2421 Target_powerpc
<size
, big_endian
>::rela_dyn_section(Symbol_table
* symtab
,
2426 return this->rela_dyn_section(layout
);
2428 if (this->iplt_
== NULL
)
2429 this->make_iplt_section(symtab
, layout
);
2430 return this->iplt_
->rel_plt();
2436 // Determine the stub group size. The group size is the absolute
2437 // value of the parameter --stub-group-size. If --stub-group-size
2438 // is passed a negative value, we restrict stubs to be always before
2439 // the stubbed branches.
2440 Stub_control(int32_t size
, bool no_size_errors
)
2441 : state_(NO_GROUP
), stub_group_size_(abs(size
)),
2442 stubs_always_before_branch_(size
< 0),
2443 suppress_size_errors_(no_size_errors
), group_size_(0),
2444 group_end_addr_(0), owner_(NULL
), output_section_(NULL
)
2448 // Return true iff input section can be handled by current stub
2451 can_add_to_stub_group(Output_section
* o
,
2452 const Output_section::Input_section
* i
,
2455 const Output_section::Input_section
*
2461 { return output_section_
; }
2464 set_output_and_owner(Output_section
* o
,
2465 const Output_section::Input_section
* i
)
2467 this->output_section_
= o
;
2475 FINDING_STUB_SECTION
,
2480 uint32_t stub_group_size_
;
2481 bool stubs_always_before_branch_
;
2482 bool suppress_size_errors_
;
2483 // Current max size of group. Starts at stub_group_size_ but is
2484 // reduced to stub_group_size_/1024 on seeing a section with
2485 // external conditional branches.
2486 uint32_t group_size_
;
2487 uint64_t group_end_addr_
;
2488 // owner_ and output_section_ specify the section to which stubs are
2489 // attached. The stubs are placed at the end of this section.
2490 const Output_section::Input_section
* owner_
;
2491 Output_section
* output_section_
;
2494 // Return true iff input section can be handled by current stub
2495 // group. Sections are presented to this function in reverse order,
2496 // so the first section is the tail of the group.
2499 Stub_control::can_add_to_stub_group(Output_section
* o
,
2500 const Output_section::Input_section
* i
,
2503 bool whole_sec
= o
->order() == ORDER_INIT
|| o
->order() == ORDER_FINI
;
2505 uint64_t start_addr
= o
->address();
2508 // .init and .fini sections are pasted together to form a single
2509 // function. We can't be adding stubs in the middle of the function.
2510 this_size
= o
->data_size();
2513 start_addr
+= i
->relobj()->output_section_offset(i
->shndx());
2514 this_size
= i
->data_size();
2517 uint32_t group_size
= this->stub_group_size_
;
2519 this->group_size_
= group_size
= group_size
>> 10;
2521 if (this_size
> group_size
&& !this->suppress_size_errors_
)
2522 gold_warning(_("%s:%s exceeds group size"),
2523 i
->relobj()->name().c_str(),
2524 i
->relobj()->section_name(i
->shndx()).c_str());
2526 gold_debug(DEBUG_TARGET
, "maybe add%s %s:%s size=%#llx total=%#llx",
2527 has14
? " 14bit" : "",
2528 i
->relobj()->name().c_str(),
2529 i
->relobj()->section_name(i
->shndx()).c_str(),
2530 (long long) this_size
,
2531 (long long) this->group_end_addr_
- start_addr
);
2533 uint64_t end_addr
= start_addr
+ this_size
;
2534 if (this->state_
== HAS_STUB_SECTION
)
2536 // Can we add this section, which is before the stubs, to the
2538 if (this->group_end_addr_
- start_addr
<= this->group_size_
)
2543 // Stubs are added at the end of "owner_".
2544 // The current section can always be the stub owner, except when
2545 // whole_sec is true and the current section isn't the last of
2546 // the pasted sections. (This restriction for the whole_sec
2547 // case is just to simplify the corner case mentioned in
2549 // Note that "owner_" itself is not necessarily part of the
2550 // group of sections served by these stubs!
2551 if (!whole_sec
|| this->output_section_
!= o
)
2554 this->output_section_
= o
;
2557 if (this->state_
== FINDING_STUB_SECTION
)
2559 if (this->group_end_addr_
- start_addr
<= this->group_size_
)
2561 // The group after the stubs has reached maximum size.
2562 // Now see about adding sections before the stubs to the
2563 // group. If the current section has a 14-bit branch and
2564 // the group after the stubs exceeds group_size_ (because
2565 // they didn't have 14-bit branches), don't add sections
2566 // before the stubs: The size of stubs for such a large
2567 // group may exceed the reach of a 14-bit branch.
2568 if (!this->stubs_always_before_branch_
2569 && this_size
<= this->group_size_
2570 && this->group_end_addr_
- end_addr
<= this->group_size_
)
2572 gold_debug(DEBUG_TARGET
, "adding before stubs");
2573 this->state_
= HAS_STUB_SECTION
;
2574 this->group_end_addr_
= end_addr
;
2578 else if (this->state_
== NO_GROUP
)
2580 // Only here on very first use of Stub_control
2581 this->state_
= FINDING_STUB_SECTION
;
2582 this->group_size_
= group_size
;
2583 this->group_end_addr_
= end_addr
;
2590 gold_debug(DEBUG_TARGET
, "nope, didn't fit\n");
2592 // The section fails to fit in the current group. Set up a few
2593 // things for the next group. owner_ and output_section_ will be
2594 // set later after we've retrieved those values for the current
2596 this->state_
= FINDING_STUB_SECTION
;
2597 this->group_size_
= group_size
;
2598 this->group_end_addr_
= end_addr
;
2602 // Look over all the input sections, deciding where to place stubs.
2604 template<int size
, bool big_endian
>
2606 Target_powerpc
<size
, big_endian
>::group_sections(Layout
* layout
,
2608 bool no_size_errors
)
2610 Stub_control
stub_control(this->stub_group_size_
, no_size_errors
);
2612 // Group input sections and insert stub table
2613 Stub_table_owner
* table_owner
= NULL
;
2614 std::vector
<Stub_table_owner
*> tables
;
2615 Layout::Section_list section_list
;
2616 layout
->get_executable_sections(§ion_list
);
2617 std::stable_sort(section_list
.begin(), section_list
.end(), Sort_sections());
2618 for (Layout::Section_list::reverse_iterator o
= section_list
.rbegin();
2619 o
!= section_list
.rend();
2622 typedef Output_section::Input_section_list Input_section_list
;
2623 for (Input_section_list::const_reverse_iterator i
2624 = (*o
)->input_sections().rbegin();
2625 i
!= (*o
)->input_sections().rend();
2628 if (i
->is_input_section()
2629 || i
->is_relaxed_input_section())
2631 Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
2632 <Powerpc_relobj
<size
, big_endian
>*>(i
->relobj());
2633 bool has14
= ppcobj
->has_14bit_branch(i
->shndx());
2634 if (!stub_control
.can_add_to_stub_group(*o
, &*i
, has14
))
2636 table_owner
->output_section
= stub_control
.output_section();
2637 table_owner
->owner
= stub_control
.owner();
2638 stub_control
.set_output_and_owner(*o
, &*i
);
2641 if (table_owner
== NULL
)
2643 table_owner
= new Stub_table_owner
;
2644 tables
.push_back(table_owner
);
2646 ppcobj
->set_stub_table(i
->shndx(), tables
.size() - 1);
2650 if (table_owner
!= NULL
)
2652 const Output_section::Input_section
* i
= stub_control
.owner();
2654 if (tables
.size() >= 2 && tables
[tables
.size() - 2]->owner
== i
)
2656 // Corner case. A new stub group was made for the first
2657 // section (last one looked at here) for some reason, but
2658 // the first section is already being used as the owner for
2659 // a stub table for following sections. Force it into that
2663 Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
2664 <Powerpc_relobj
<size
, big_endian
>*>(i
->relobj());
2665 ppcobj
->set_stub_table(i
->shndx(), tables
.size() - 1);
2669 table_owner
->output_section
= stub_control
.output_section();
2670 table_owner
->owner
= i
;
2673 for (typename
std::vector
<Stub_table_owner
*>::iterator t
= tables
.begin();
2677 Stub_table
<size
, big_endian
>* stub_table
;
2679 if ((*t
)->owner
->is_input_section())
2680 stub_table
= new Stub_table
<size
, big_endian
>(this,
2681 (*t
)->output_section
,
2683 else if ((*t
)->owner
->is_relaxed_input_section())
2684 stub_table
= static_cast<Stub_table
<size
, big_endian
>*>(
2685 (*t
)->owner
->relaxed_input_section());
2688 this->stub_tables_
.push_back(stub_table
);
2693 static unsigned long
2694 max_branch_delta (unsigned int r_type
)
2696 if (r_type
== elfcpp::R_POWERPC_REL14
2697 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
2698 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
)
2700 if (r_type
== elfcpp::R_POWERPC_REL24
2701 || r_type
== elfcpp::R_PPC_PLTREL24
2702 || r_type
== elfcpp::R_PPC_LOCAL24PC
)
2707 // If this branch needs a plt call stub, or a long branch stub, make one.
2709 template<int size
, bool big_endian
>
2711 Target_powerpc
<size
, big_endian
>::Branch_info::make_stub(
2712 Stub_table
<size
, big_endian
>* stub_table
,
2713 Stub_table
<size
, big_endian
>* ifunc_stub_table
,
2714 Symbol_table
* symtab
) const
2716 Symbol
* sym
= this->object_
->global_symbol(this->r_sym_
);
2717 if (sym
!= NULL
&& sym
->is_forwarder())
2718 sym
= symtab
->resolve_forwards(sym
);
2719 const Sized_symbol
<size
>* gsym
= static_cast<const Sized_symbol
<size
>*>(sym
);
2720 Target_powerpc
<size
, big_endian
>* target
=
2721 static_cast<Target_powerpc
<size
, big_endian
>*>(
2722 parameters
->sized_target
<size
, big_endian
>());
2724 ? gsym
->use_plt_offset(Scan::get_reference_flags(this->r_type_
, target
))
2725 : this->object_
->local_has_plt_offset(this->r_sym_
))
2729 && target
->abiversion() >= 2
2730 && !parameters
->options().output_is_position_independent()
2731 && !is_branch_reloc(this->r_type_
))
2732 target
->glink_section()->add_global_entry(gsym
);
2735 if (stub_table
== NULL
)
2736 stub_table
= this->object_
->stub_table(this->shndx_
);
2737 if (stub_table
== NULL
)
2739 // This is a ref from a data section to an ifunc symbol.
2740 stub_table
= ifunc_stub_table
;
2742 gold_assert(stub_table
!= NULL
);
2743 Address from
= this->object_
->get_output_section_offset(this->shndx_
);
2744 if (from
!= invalid_address
)
2745 from
+= (this->object_
->output_section(this->shndx_
)->address()
2748 return stub_table
->add_plt_call_entry(from
,
2749 this->object_
, gsym
,
2750 this->r_type_
, this->addend_
);
2752 return stub_table
->add_plt_call_entry(from
,
2753 this->object_
, this->r_sym_
,
2754 this->r_type_
, this->addend_
);
2759 Address max_branch_offset
= max_branch_delta(this->r_type_
);
2760 if (max_branch_offset
== 0)
2762 Address from
= this->object_
->get_output_section_offset(this->shndx_
);
2763 gold_assert(from
!= invalid_address
);
2764 from
+= (this->object_
->output_section(this->shndx_
)->address()
2769 switch (gsym
->source())
2771 case Symbol::FROM_OBJECT
:
2773 Object
* symobj
= gsym
->object();
2774 if (symobj
->is_dynamic()
2775 || symobj
->pluginobj() != NULL
)
2778 unsigned int shndx
= gsym
->shndx(&is_ordinary
);
2779 if (shndx
== elfcpp::SHN_UNDEF
)
2784 case Symbol::IS_UNDEFINED
:
2790 Symbol_table::Compute_final_value_status status
;
2791 to
= symtab
->compute_final_value
<size
>(gsym
, &status
);
2792 if (status
!= Symbol_table::CFVS_OK
)
2795 to
+= this->object_
->ppc64_local_entry_offset(gsym
);
2799 const Symbol_value
<size
>* psymval
2800 = this->object_
->local_symbol(this->r_sym_
);
2801 Symbol_value
<size
> symval
;
2802 typedef Sized_relobj_file
<size
, big_endian
> ObjType
;
2803 typename
ObjType::Compute_final_local_value_status status
2804 = this->object_
->compute_final_local_value(this->r_sym_
, psymval
,
2806 if (status
!= ObjType::CFLV_OK
2807 || !symval
.has_output_value())
2809 to
= symval
.value(this->object_
, 0);
2811 to
+= this->object_
->ppc64_local_entry_offset(this->r_sym_
);
2813 if (!(size
== 32 && this->r_type_
== elfcpp::R_PPC_PLTREL24
))
2814 to
+= this->addend_
;
2815 if (stub_table
== NULL
)
2816 stub_table
= this->object_
->stub_table(this->shndx_
);
2817 if (size
== 64 && target
->abiversion() < 2)
2819 unsigned int dest_shndx
;
2820 if (!target
->symval_for_branch(symtab
, gsym
, this->object_
,
2824 Address delta
= to
- from
;
2825 if (delta
+ max_branch_offset
>= 2 * max_branch_offset
)
2827 if (stub_table
== NULL
)
2829 gold_warning(_("%s:%s: branch in non-executable section,"
2830 " no long branch stub for you"),
2831 this->object_
->name().c_str(),
2832 this->object_
->section_name(this->shndx_
).c_str());
2835 bool save_res
= (size
== 64
2837 && gsym
->source() == Symbol::IN_OUTPUT_DATA
2838 && gsym
->output_data() == target
->savres_section());
2839 return stub_table
->add_long_branch_entry(this->object_
,
2841 from
, to
, save_res
);
2847 // Relaxation hook. This is where we do stub generation.
2849 template<int size
, bool big_endian
>
2851 Target_powerpc
<size
, big_endian
>::do_relax(int pass
,
2852 const Input_objects
*,
2853 Symbol_table
* symtab
,
2857 unsigned int prev_brlt_size
= 0;
2861 = this->abiversion() < 2 && parameters
->options().plt_thread_safe();
2863 && this->abiversion() < 2
2865 && !parameters
->options().user_set_plt_thread_safe())
2867 static const char* const thread_starter
[] =
2871 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
2873 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
2874 "mq_notify", "create_timer",
2879 "GOMP_parallel_start",
2880 "GOMP_parallel_loop_static",
2881 "GOMP_parallel_loop_static_start",
2882 "GOMP_parallel_loop_dynamic",
2883 "GOMP_parallel_loop_dynamic_start",
2884 "GOMP_parallel_loop_guided",
2885 "GOMP_parallel_loop_guided_start",
2886 "GOMP_parallel_loop_runtime",
2887 "GOMP_parallel_loop_runtime_start",
2888 "GOMP_parallel_sections",
2889 "GOMP_parallel_sections_start",
2894 if (parameters
->options().shared())
2898 for (unsigned int i
= 0;
2899 i
< sizeof(thread_starter
) / sizeof(thread_starter
[0]);
2902 Symbol
* sym
= symtab
->lookup(thread_starter
[i
], NULL
);
2903 thread_safe
= (sym
!= NULL
2905 && sym
->in_real_elf());
2911 this->plt_thread_safe_
= thread_safe
;
2916 this->stub_group_size_
= parameters
->options().stub_group_size();
2917 bool no_size_errors
= true;
2918 if (this->stub_group_size_
== 1)
2919 this->stub_group_size_
= 0x1c00000;
2920 else if (this->stub_group_size_
== -1)
2921 this->stub_group_size_
= -0x1e00000;
2923 no_size_errors
= false;
2924 this->group_sections(layout
, task
, no_size_errors
);
2926 else if (this->relax_failed_
&& this->relax_fail_count_
< 3)
2928 this->branch_lookup_table_
.clear();
2929 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
2930 p
!= this->stub_tables_
.end();
2933 (*p
)->clear_stubs(true);
2935 this->stub_tables_
.clear();
2936 this->stub_group_size_
= this->stub_group_size_
/ 4 * 3;
2937 gold_info(_("%s: stub group size is too large; retrying with %#x"),
2938 program_name
, this->stub_group_size_
);
2939 this->group_sections(layout
, task
, true);
2942 // We need address of stub tables valid for make_stub.
2943 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
2944 p
!= this->stub_tables_
.end();
2947 const Powerpc_relobj
<size
, big_endian
>* object
2948 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>((*p
)->relobj());
2949 Address off
= object
->get_output_section_offset((*p
)->shndx());
2950 gold_assert(off
!= invalid_address
);
2951 Output_section
* os
= (*p
)->output_section();
2952 (*p
)->set_address_and_size(os
, off
);
2957 // Clear plt call stubs, long branch stubs and branch lookup table.
2958 prev_brlt_size
= this->branch_lookup_table_
.size();
2959 this->branch_lookup_table_
.clear();
2960 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
2961 p
!= this->stub_tables_
.end();
2964 (*p
)->clear_stubs(false);
2968 // Build all the stubs.
2969 this->relax_failed_
= false;
2970 Stub_table
<size
, big_endian
>* ifunc_stub_table
2971 = this->stub_tables_
.size() == 0 ? NULL
: this->stub_tables_
[0];
2972 Stub_table
<size
, big_endian
>* one_stub_table
2973 = this->stub_tables_
.size() != 1 ? NULL
: ifunc_stub_table
;
2974 for (typename
Branches::const_iterator b
= this->branch_info_
.begin();
2975 b
!= this->branch_info_
.end();
2978 if (!b
->make_stub(one_stub_table
, ifunc_stub_table
, symtab
)
2979 && !this->relax_failed_
)
2981 this->relax_failed_
= true;
2982 this->relax_fail_count_
++;
2983 if (this->relax_fail_count_
< 3)
2988 // Did anything change size?
2989 unsigned int num_huge_branches
= this->branch_lookup_table_
.size();
2990 bool again
= num_huge_branches
!= prev_brlt_size
;
2991 if (size
== 64 && num_huge_branches
!= 0)
2992 this->make_brlt_section(layout
);
2993 if (size
== 64 && again
)
2994 this->brlt_section_
->set_current_size(num_huge_branches
);
2996 typedef Unordered_set
<Output_section
*> Output_sections
;
2997 Output_sections os_need_update
;
2998 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
2999 p
!= this->stub_tables_
.end();
3002 if ((*p
)->size_update())
3005 (*p
)->add_eh_frame(layout
);
3006 os_need_update
.insert((*p
)->output_section());
3010 // Set output section offsets for all input sections in an output
3011 // section that just changed size. Anything past the stubs will
3013 for (typename
Output_sections::iterator p
= os_need_update
.begin();
3014 p
!= os_need_update
.end();
3017 Output_section
* os
= *p
;
3019 typedef Output_section::Input_section_list Input_section_list
;
3020 for (Input_section_list::const_iterator i
= os
->input_sections().begin();
3021 i
!= os
->input_sections().end();
3024 off
= align_address(off
, i
->addralign());
3025 if (i
->is_input_section() || i
->is_relaxed_input_section())
3026 i
->relobj()->set_section_offset(i
->shndx(), off
);
3027 if (i
->is_relaxed_input_section())
3029 Stub_table
<size
, big_endian
>* stub_table
3030 = static_cast<Stub_table
<size
, big_endian
>*>(
3031 i
->relaxed_input_section());
3032 Address stub_table_size
= stub_table
->set_address_and_size(os
, off
);
3033 off
+= stub_table_size
;
3034 // After a few iterations, set current stub table size
3035 // as min size threshold, so later stub tables can only
3038 stub_table
->set_min_size_threshold(stub_table_size
);
3041 off
+= i
->data_size();
3043 // If .branch_lt is part of this output section, then we have
3044 // just done the offset adjustment.
3045 os
->clear_section_offsets_need_adjustment();
3050 && num_huge_branches
!= 0
3051 && parameters
->options().output_is_position_independent())
3053 // Fill in the BRLT relocs.
3054 this->brlt_section_
->reset_brlt_sizes();
3055 for (typename
Branch_lookup_table::const_iterator p
3056 = this->branch_lookup_table_
.begin();
3057 p
!= this->branch_lookup_table_
.end();
3060 this->brlt_section_
->add_reloc(p
->first
, p
->second
);
3062 this->brlt_section_
->finalize_brlt_sizes();
3067 template<int size
, bool big_endian
>
3069 Target_powerpc
<size
, big_endian
>::do_plt_fde_location(const Output_data
* plt
,
3070 unsigned char* oview
,
3074 uint64_t address
= plt
->address();
3075 off_t len
= plt
->data_size();
3077 if (plt
== this->glink_
)
3079 // See Output_data_glink::do_write() for glink contents.
3082 gold_assert(parameters
->doing_static_link());
3083 // Static linking may need stubs, to support ifunc and long
3084 // branches. We need to create an output section for
3085 // .eh_frame early in the link process, to have a place to
3086 // attach stub .eh_frame info. We also need to have
3087 // registered a CIE that matches the stub CIE. Both of
3088 // these requirements are satisfied by creating an FDE and
3089 // CIE for .glink, even though static linking will leave
3090 // .glink zero length.
3091 // ??? Hopefully generating an FDE with a zero address range
3092 // won't confuse anything that consumes .eh_frame info.
3094 else if (size
== 64)
3096 // There is one word before __glink_PLTresolve
3100 else if (parameters
->options().output_is_position_independent())
3102 // There are two FDEs for a position independent glink.
3103 // The first covers the branch table, the second
3104 // __glink_PLTresolve at the end of glink.
3105 off_t resolve_size
= this->glink_
->pltresolve_size
;
3106 if (oview
[9] == elfcpp::DW_CFA_nop
)
3107 len
-= resolve_size
;
3110 address
+= len
- resolve_size
;
3117 // Must be a stub table.
3118 const Stub_table
<size
, big_endian
>* stub_table
3119 = static_cast<const Stub_table
<size
, big_endian
>*>(plt
);
3120 uint64_t stub_address
= stub_table
->stub_address();
3121 len
-= stub_address
- address
;
3122 address
= stub_address
;
3125 *paddress
= address
;
3129 // A class to handle the PLT data.
3131 template<int size
, bool big_endian
>
3132 class Output_data_plt_powerpc
: public Output_section_data_build
3135 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true,
3136 size
, big_endian
> Reloc_section
;
3138 Output_data_plt_powerpc(Target_powerpc
<size
, big_endian
>* targ
,
3139 Reloc_section
* plt_rel
,
3141 : Output_section_data_build(size
== 32 ? 4 : 8),
3147 // Add an entry to the PLT.
3152 add_ifunc_entry(Symbol
*);
3155 add_local_ifunc_entry(Sized_relobj_file
<size
, big_endian
>*, unsigned int);
3157 // Return the .rela.plt section data.
3164 // Return the number of PLT entries.
3168 if (this->current_data_size() == 0)
3170 return ((this->current_data_size() - this->first_plt_entry_offset())
3171 / this->plt_entry_size());
3176 do_adjust_output_section(Output_section
* os
)
3181 // Write to a map file.
3183 do_print_to_mapfile(Mapfile
* mapfile
) const
3184 { mapfile
->print_output_data(this, this->name_
); }
3187 // Return the offset of the first non-reserved PLT entry.
3189 first_plt_entry_offset() const
3191 // IPLT has no reserved entry.
3192 if (this->name_
[3] == 'I')
3194 return this->targ_
->first_plt_entry_offset();
3197 // Return the size of each PLT entry.
3199 plt_entry_size() const
3201 return this->targ_
->plt_entry_size();
3204 // Write out the PLT data.
3206 do_write(Output_file
*);
3208 // The reloc section.
3209 Reloc_section
* rel_
;
3210 // Allows access to .glink for do_write.
3211 Target_powerpc
<size
, big_endian
>* targ_
;
3212 // What to report in map file.
3216 // Add an entry to the PLT.
3218 template<int size
, bool big_endian
>
3220 Output_data_plt_powerpc
<size
, big_endian
>::add_entry(Symbol
* gsym
)
3222 if (!gsym
->has_plt_offset())
3224 section_size_type off
= this->current_data_size();
3226 off
+= this->first_plt_entry_offset();
3227 gsym
->set_plt_offset(off
);
3228 gsym
->set_needs_dynsym_entry();
3229 unsigned int dynrel
= elfcpp::R_POWERPC_JMP_SLOT
;
3230 this->rel_
->add_global(gsym
, dynrel
, this, off
, 0);
3231 off
+= this->plt_entry_size();
3232 this->set_current_data_size(off
);
3236 // Add an entry for a global ifunc symbol that resolves locally, to the IPLT.
3238 template<int size
, bool big_endian
>
3240 Output_data_plt_powerpc
<size
, big_endian
>::add_ifunc_entry(Symbol
* gsym
)
3242 if (!gsym
->has_plt_offset())
3244 section_size_type off
= this->current_data_size();
3245 gsym
->set_plt_offset(off
);
3246 unsigned int dynrel
= elfcpp::R_POWERPC_IRELATIVE
;
3247 if (size
== 64 && this->targ_
->abiversion() < 2)
3248 dynrel
= elfcpp::R_PPC64_JMP_IREL
;
3249 this->rel_
->add_symbolless_global_addend(gsym
, dynrel
, this, off
, 0);
3250 off
+= this->plt_entry_size();
3251 this->set_current_data_size(off
);
3255 // Add an entry for a local ifunc symbol to the IPLT.
3257 template<int size
, bool big_endian
>
3259 Output_data_plt_powerpc
<size
, big_endian
>::add_local_ifunc_entry(
3260 Sized_relobj_file
<size
, big_endian
>* relobj
,
3261 unsigned int local_sym_index
)
3263 if (!relobj
->local_has_plt_offset(local_sym_index
))
3265 section_size_type off
= this->current_data_size();
3266 relobj
->set_local_plt_offset(local_sym_index
, off
);
3267 unsigned int dynrel
= elfcpp::R_POWERPC_IRELATIVE
;
3268 if (size
== 64 && this->targ_
->abiversion() < 2)
3269 dynrel
= elfcpp::R_PPC64_JMP_IREL
;
3270 this->rel_
->add_symbolless_local_addend(relobj
, local_sym_index
, dynrel
,
3272 off
+= this->plt_entry_size();
3273 this->set_current_data_size(off
);
3277 static const uint32_t add_0_11_11
= 0x7c0b5a14;
3278 static const uint32_t add_2_2_11
= 0x7c425a14;
3279 static const uint32_t add_2_2_12
= 0x7c426214;
3280 static const uint32_t add_3_3_2
= 0x7c631214;
3281 static const uint32_t add_3_3_13
= 0x7c636a14;
3282 static const uint32_t add_11_0_11
= 0x7d605a14;
3283 static const uint32_t add_11_2_11
= 0x7d625a14;
3284 static const uint32_t add_11_11_2
= 0x7d6b1214;
3285 static const uint32_t addi_0_12
= 0x380c0000;
3286 static const uint32_t addi_2_2
= 0x38420000;
3287 static const uint32_t addi_3_3
= 0x38630000;
3288 static const uint32_t addi_11_11
= 0x396b0000;
3289 static const uint32_t addi_12_1
= 0x39810000;
3290 static const uint32_t addi_12_12
= 0x398c0000;
3291 static const uint32_t addis_0_2
= 0x3c020000;
3292 static const uint32_t addis_0_13
= 0x3c0d0000;
3293 static const uint32_t addis_2_12
= 0x3c4c0000;
3294 static const uint32_t addis_11_2
= 0x3d620000;
3295 static const uint32_t addis_11_11
= 0x3d6b0000;
3296 static const uint32_t addis_11_30
= 0x3d7e0000;
3297 static const uint32_t addis_12_1
= 0x3d810000;
3298 static const uint32_t addis_12_2
= 0x3d820000;
3299 static const uint32_t addis_12_12
= 0x3d8c0000;
3300 static const uint32_t b
= 0x48000000;
3301 static const uint32_t bcl_20_31
= 0x429f0005;
3302 static const uint32_t bctr
= 0x4e800420;
3303 static const uint32_t blr
= 0x4e800020;
3304 static const uint32_t bnectr_p4
= 0x4ce20420;
3305 static const uint32_t cmpld_7_12_0
= 0x7fac0040;
3306 static const uint32_t cmpldi_2_0
= 0x28220000;
3307 static const uint32_t cror_15_15_15
= 0x4def7b82;
3308 static const uint32_t cror_31_31_31
= 0x4ffffb82;
3309 static const uint32_t ld_0_1
= 0xe8010000;
3310 static const uint32_t ld_0_12
= 0xe80c0000;
3311 static const uint32_t ld_2_1
= 0xe8410000;
3312 static const uint32_t ld_2_2
= 0xe8420000;
3313 static const uint32_t ld_2_11
= 0xe84b0000;
3314 static const uint32_t ld_2_12
= 0xe84c0000;
3315 static const uint32_t ld_11_2
= 0xe9620000;
3316 static const uint32_t ld_11_11
= 0xe96b0000;
3317 static const uint32_t ld_12_2
= 0xe9820000;
3318 static const uint32_t ld_12_11
= 0xe98b0000;
3319 static const uint32_t ld_12_12
= 0xe98c0000;
3320 static const uint32_t lfd_0_1
= 0xc8010000;
3321 static const uint32_t li_0_0
= 0x38000000;
3322 static const uint32_t li_12_0
= 0x39800000;
3323 static const uint32_t lis_0
= 0x3c000000;
3324 static const uint32_t lis_2
= 0x3c400000;
3325 static const uint32_t lis_11
= 0x3d600000;
3326 static const uint32_t lis_12
= 0x3d800000;
3327 static const uint32_t lvx_0_12_0
= 0x7c0c00ce;
3328 static const uint32_t lwz_0_12
= 0x800c0000;
3329 static const uint32_t lwz_11_11
= 0x816b0000;
3330 static const uint32_t lwz_11_30
= 0x817e0000;
3331 static const uint32_t lwz_12_12
= 0x818c0000;
3332 static const uint32_t lwzu_0_12
= 0x840c0000;
3333 static const uint32_t mflr_0
= 0x7c0802a6;
3334 static const uint32_t mflr_11
= 0x7d6802a6;
3335 static const uint32_t mflr_12
= 0x7d8802a6;
3336 static const uint32_t mtctr_0
= 0x7c0903a6;
3337 static const uint32_t mtctr_11
= 0x7d6903a6;
3338 static const uint32_t mtctr_12
= 0x7d8903a6;
3339 static const uint32_t mtlr_0
= 0x7c0803a6;
3340 static const uint32_t mtlr_12
= 0x7d8803a6;
3341 static const uint32_t nop
= 0x60000000;
3342 static const uint32_t ori_0_0_0
= 0x60000000;
3343 static const uint32_t srdi_0_0_2
= 0x7800f082;
3344 static const uint32_t std_0_1
= 0xf8010000;
3345 static const uint32_t std_0_12
= 0xf80c0000;
3346 static const uint32_t std_2_1
= 0xf8410000;
3347 static const uint32_t stfd_0_1
= 0xd8010000;
3348 static const uint32_t stvx_0_12_0
= 0x7c0c01ce;
3349 static const uint32_t sub_11_11_12
= 0x7d6c5850;
3350 static const uint32_t sub_12_12_11
= 0x7d8b6050;
3351 static const uint32_t xor_2_12_12
= 0x7d826278;
3352 static const uint32_t xor_11_12_12
= 0x7d8b6278;
3354 // Write out the PLT.
3356 template<int size
, bool big_endian
>
3358 Output_data_plt_powerpc
<size
, big_endian
>::do_write(Output_file
* of
)
3360 if (size
== 32 && this->name_
[3] != 'I')
3362 const section_size_type offset
= this->offset();
3363 const section_size_type oview_size
3364 = convert_to_section_size_type(this->data_size());
3365 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
3366 unsigned char* pov
= oview
;
3367 unsigned char* endpov
= oview
+ oview_size
;
3369 // The address of the .glink branch table
3370 const Output_data_glink
<size
, big_endian
>* glink
3371 = this->targ_
->glink_section();
3372 elfcpp::Elf_types
<32>::Elf_Addr branch_tab
= glink
->address();
3374 while (pov
< endpov
)
3376 elfcpp::Swap
<32, big_endian
>::writeval(pov
, branch_tab
);
3381 of
->write_output_view(offset
, oview_size
, oview
);
3385 // Create the PLT section.
3387 template<int size
, bool big_endian
>
3389 Target_powerpc
<size
, big_endian
>::make_plt_section(Symbol_table
* symtab
,
3392 if (this->plt_
== NULL
)
3394 if (this->got_
== NULL
)
3395 this->got_section(symtab
, layout
);
3397 if (this->glink_
== NULL
)
3398 make_glink_section(layout
);
3400 // Ensure that .rela.dyn always appears before .rela.plt This is
3401 // necessary due to how, on PowerPC and some other targets, .rela.dyn
3402 // needs to include .rela.plt in its range.
3403 this->rela_dyn_section(layout
);
3405 Reloc_section
* plt_rel
= new Reloc_section(false);
3406 layout
->add_output_section_data(".rela.plt", elfcpp::SHT_RELA
,
3407 elfcpp::SHF_ALLOC
, plt_rel
,
3408 ORDER_DYNAMIC_PLT_RELOCS
, false);
3410 = new Output_data_plt_powerpc
<size
, big_endian
>(this, plt_rel
,
3412 layout
->add_output_section_data(".plt",
3414 ? elfcpp::SHT_PROGBITS
3415 : elfcpp::SHT_NOBITS
),
3416 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
3425 // Create the IPLT section.
3427 template<int size
, bool big_endian
>
3429 Target_powerpc
<size
, big_endian
>::make_iplt_section(Symbol_table
* symtab
,
3432 if (this->iplt_
== NULL
)
3434 this->make_plt_section(symtab
, layout
);
3436 Reloc_section
* iplt_rel
= new Reloc_section(false);
3437 this->rela_dyn_
->output_section()->add_output_section_data(iplt_rel
);
3439 = new Output_data_plt_powerpc
<size
, big_endian
>(this, iplt_rel
,
3441 this->plt_
->output_section()->add_output_section_data(this->iplt_
);
3445 // A section for huge long branch addresses, similar to plt section.
3447 template<int size
, bool big_endian
>
3448 class Output_data_brlt_powerpc
: public Output_section_data_build
3451 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
3452 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true,
3453 size
, big_endian
> Reloc_section
;
3455 Output_data_brlt_powerpc(Target_powerpc
<size
, big_endian
>* targ
,
3456 Reloc_section
* brlt_rel
)
3457 : Output_section_data_build(size
== 32 ? 4 : 8),
3465 this->reset_data_size();
3466 this->rel_
->reset_data_size();
3470 finalize_brlt_sizes()
3472 this->finalize_data_size();
3473 this->rel_
->finalize_data_size();
3476 // Add a reloc for an entry in the BRLT.
3478 add_reloc(Address to
, unsigned int off
)
3479 { this->rel_
->add_relative(elfcpp::R_POWERPC_RELATIVE
, this, off
, to
); }
3481 // Update section and reloc section size.
3483 set_current_size(unsigned int num_branches
)
3485 this->reset_address_and_file_offset();
3486 this->set_current_data_size(num_branches
* 16);
3487 this->finalize_data_size();
3488 Output_section
* os
= this->output_section();
3489 os
->set_section_offsets_need_adjustment();
3490 if (this->rel_
!= NULL
)
3492 unsigned int reloc_size
3493 = Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
3494 this->rel_
->reset_address_and_file_offset();
3495 this->rel_
->set_current_data_size(num_branches
* reloc_size
);
3496 this->rel_
->finalize_data_size();
3497 Output_section
* os
= this->rel_
->output_section();
3498 os
->set_section_offsets_need_adjustment();
3504 do_adjust_output_section(Output_section
* os
)
3509 // Write to a map file.
3511 do_print_to_mapfile(Mapfile
* mapfile
) const
3512 { mapfile
->print_output_data(this, "** BRLT"); }
3515 // Write out the BRLT data.
3517 do_write(Output_file
*);
3519 // The reloc section.
3520 Reloc_section
* rel_
;
3521 Target_powerpc
<size
, big_endian
>* targ_
;
3524 // Make the branch lookup table section.
3526 template<int size
, bool big_endian
>
3528 Target_powerpc
<size
, big_endian
>::make_brlt_section(Layout
* layout
)
3530 if (size
== 64 && this->brlt_section_
== NULL
)
3532 Reloc_section
* brlt_rel
= NULL
;
3533 bool is_pic
= parameters
->options().output_is_position_independent();
3536 // When PIC we can't fill in .branch_lt (like .plt it can be
3537 // a bss style section) but must initialise at runtime via
3538 // dynamic relocats.
3539 this->rela_dyn_section(layout
);
3540 brlt_rel
= new Reloc_section(false);
3541 this->rela_dyn_
->output_section()->add_output_section_data(brlt_rel
);
3544 = new Output_data_brlt_powerpc
<size
, big_endian
>(this, brlt_rel
);
3545 if (this->plt_
&& is_pic
)
3546 this->plt_
->output_section()
3547 ->add_output_section_data(this->brlt_section_
);
3549 layout
->add_output_section_data(".branch_lt",
3550 (is_pic
? elfcpp::SHT_NOBITS
3551 : elfcpp::SHT_PROGBITS
),
3552 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
3553 this->brlt_section_
,
3554 (is_pic
? ORDER_SMALL_BSS
3555 : ORDER_SMALL_DATA
),
3560 // Write out .branch_lt when non-PIC.
3562 template<int size
, bool big_endian
>
3564 Output_data_brlt_powerpc
<size
, big_endian
>::do_write(Output_file
* of
)
3566 if (size
== 64 && !parameters
->options().output_is_position_independent())
3568 const section_size_type offset
= this->offset();
3569 const section_size_type oview_size
3570 = convert_to_section_size_type(this->data_size());
3571 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
3573 this->targ_
->write_branch_lookup_table(oview
);
3574 of
->write_output_view(offset
, oview_size
, oview
);
3578 static inline uint32_t
3584 static inline uint32_t
3590 static inline uint32_t
3593 return hi(a
+ 0x8000);
3599 static const unsigned char eh_frame_cie
[12];
3603 const unsigned char Eh_cie
<size
>::eh_frame_cie
[] =
3606 'z', 'R', 0, // Augmentation string.
3607 4, // Code alignment.
3608 0x80 - size
/ 8 , // Data alignment.
3610 1, // Augmentation size.
3611 (elfcpp::DW_EH_PE_pcrel
3612 | elfcpp::DW_EH_PE_sdata4
), // FDE encoding.
3613 elfcpp::DW_CFA_def_cfa
, 1, 0 // def_cfa: r1 offset 0.
3616 // Describe __glink_PLTresolve use of LR, 64-bit version ABIv1.
3617 static const unsigned char glink_eh_frame_fde_64v1
[] =
3619 0, 0, 0, 0, // Replaced with offset to .glink.
3620 0, 0, 0, 0, // Replaced with size of .glink.
3621 0, // Augmentation size.
3622 elfcpp::DW_CFA_advance_loc
+ 1,
3623 elfcpp::DW_CFA_register
, 65, 12,
3624 elfcpp::DW_CFA_advance_loc
+ 4,
3625 elfcpp::DW_CFA_restore_extended
, 65
3628 // Describe __glink_PLTresolve use of LR, 64-bit version ABIv2.
3629 static const unsigned char glink_eh_frame_fde_64v2
[] =
3631 0, 0, 0, 0, // Replaced with offset to .glink.
3632 0, 0, 0, 0, // Replaced with size of .glink.
3633 0, // Augmentation size.
3634 elfcpp::DW_CFA_advance_loc
+ 1,
3635 elfcpp::DW_CFA_register
, 65, 0,
3636 elfcpp::DW_CFA_advance_loc
+ 4,
3637 elfcpp::DW_CFA_restore_extended
, 65
3640 // Describe __glink_PLTresolve use of LR, 32-bit version.
3641 static const unsigned char glink_eh_frame_fde_32
[] =
3643 0, 0, 0, 0, // Replaced with offset to .glink.
3644 0, 0, 0, 0, // Replaced with size of .glink.
3645 0, // Augmentation size.
3646 elfcpp::DW_CFA_advance_loc
+ 2,
3647 elfcpp::DW_CFA_register
, 65, 0,
3648 elfcpp::DW_CFA_advance_loc
+ 4,
3649 elfcpp::DW_CFA_restore_extended
, 65
3652 static const unsigned char default_fde
[] =
3654 0, 0, 0, 0, // Replaced with offset to stubs.
3655 0, 0, 0, 0, // Replaced with size of stubs.
3656 0, // Augmentation size.
3657 elfcpp::DW_CFA_nop
, // Pad.
3662 template<bool big_endian
>
3664 write_insn(unsigned char* p
, uint32_t v
)
3666 elfcpp::Swap
<32, big_endian
>::writeval(p
, v
);
3669 // Stub_table holds information about plt and long branch stubs.
3670 // Stubs are built in an area following some input section determined
3671 // by group_sections(). This input section is converted to a relaxed
3672 // input section allowing it to be resized to accommodate the stubs
3674 template<int size
, bool big_endian
>
3675 class Stub_table
: public Output_relaxed_input_section
3678 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
3679 static const Address invalid_address
= static_cast<Address
>(0) - 1;
3681 Stub_table(Target_powerpc
<size
, big_endian
>* targ
,
3682 Output_section
* output_section
,
3683 const Output_section::Input_section
* owner
)
3684 : Output_relaxed_input_section(owner
->relobj(), owner
->shndx(),
3686 ->section_addralign(owner
->shndx())),
3687 targ_(targ
), plt_call_stubs_(), long_branch_stubs_(),
3688 orig_data_size_(owner
->current_data_size()),
3689 plt_size_(0), last_plt_size_(0),
3690 branch_size_(0), last_branch_size_(0), min_size_threshold_(0),
3691 eh_frame_added_(false), need_save_res_(false)
3693 this->set_output_section(output_section
);
3695 std::vector
<Output_relaxed_input_section
*> new_relaxed
;
3696 new_relaxed
.push_back(this);
3697 output_section
->convert_input_sections_to_relaxed_sections(new_relaxed
);
3700 // Add a plt call stub.
3702 add_plt_call_entry(Address
,
3703 const Sized_relobj_file
<size
, big_endian
>*,
3709 add_plt_call_entry(Address
,
3710 const Sized_relobj_file
<size
, big_endian
>*,
3715 // Find a given plt call stub.
3717 find_plt_call_entry(const Symbol
*) const;
3720 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3721 unsigned int) const;
3724 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3730 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3735 // Add a long branch stub.
3737 add_long_branch_entry(const Powerpc_relobj
<size
, big_endian
>*,
3738 unsigned int, Address
, Address
, bool);
3741 find_long_branch_entry(const Powerpc_relobj
<size
, big_endian
>*,
3745 can_reach_stub(Address from
, unsigned int off
, unsigned int r_type
)
3747 Address max_branch_offset
= max_branch_delta(r_type
);
3748 if (max_branch_offset
== 0)
3750 gold_assert(from
!= invalid_address
);
3751 Address loc
= off
+ this->stub_address();
3752 return loc
- from
+ max_branch_offset
< 2 * max_branch_offset
;
3756 clear_stubs(bool all
)
3758 this->plt_call_stubs_
.clear();
3759 this->plt_size_
= 0;
3760 this->long_branch_stubs_
.clear();
3761 this->branch_size_
= 0;
3762 this->need_save_res_
= false;
3765 this->last_plt_size_
= 0;
3766 this->last_branch_size_
= 0;
3771 set_address_and_size(const Output_section
* os
, Address off
)
3773 Address start_off
= off
;
3774 off
+= this->orig_data_size_
;
3775 Address my_size
= this->plt_size_
+ this->branch_size_
;
3776 if (this->need_save_res_
)
3777 my_size
+= this->targ_
->savres_section()->data_size();
3779 off
= align_address(off
, this->stub_align());
3780 // Include original section size and alignment padding in size
3781 my_size
+= off
- start_off
;
3782 // Ensure new size is always larger than min size
3783 // threshold. Alignment requirement is included in "my_size", so
3784 // increase "my_size" does not invalidate alignment.
3785 if (my_size
< this->min_size_threshold_
)
3786 my_size
= this->min_size_threshold_
;
3787 this->reset_address_and_file_offset();
3788 this->set_current_data_size(my_size
);
3789 this->set_address_and_file_offset(os
->address() + start_off
,
3790 os
->offset() + start_off
);
3795 stub_address() const
3797 return align_address(this->address() + this->orig_data_size_
,
3798 this->stub_align());
3804 return align_address(this->offset() + this->orig_data_size_
,
3805 this->stub_align());
3810 { return this->plt_size_
; }
3812 void set_min_size_threshold(Address min_size
)
3813 { this->min_size_threshold_
= min_size
; }
3818 Output_section
* os
= this->output_section();
3819 if (os
->addralign() < this->stub_align())
3821 os
->set_addralign(this->stub_align());
3822 // FIXME: get rid of the insane checkpointing.
3823 // We can't increase alignment of the input section to which
3824 // stubs are attached; The input section may be .init which
3825 // is pasted together with other .init sections to form a
3826 // function. Aligning might insert zero padding resulting in
3827 // sigill. However we do need to increase alignment of the
3828 // output section so that the align_address() on offset in
3829 // set_address_and_size() adds the same padding as the
3830 // align_address() on address in stub_address().
3831 // What's more, we need this alignment for the layout done in
3832 // relaxation_loop_body() so that the output section starts at
3833 // a suitably aligned address.
3834 os
->checkpoint_set_addralign(this->stub_align());
3836 if (this->last_plt_size_
!= this->plt_size_
3837 || this->last_branch_size_
!= this->branch_size_
)
3839 this->last_plt_size_
= this->plt_size_
;
3840 this->last_branch_size_
= this->branch_size_
;
3846 // Add .eh_frame info for this stub section. Unlike other linker
3847 // generated .eh_frame this is added late in the link, because we
3848 // only want the .eh_frame info if this particular stub section is
3851 add_eh_frame(Layout
* layout
)
3853 if (!this->eh_frame_added_
)
3855 if (!parameters
->options().ld_generated_unwind_info())
3858 // Since we add stub .eh_frame info late, it must be placed
3859 // after all other linker generated .eh_frame info so that
3860 // merge mapping need not be updated for input sections.
3861 // There is no provision to use a different CIE to that used
3863 if (!this->targ_
->has_glink())
3866 layout
->add_eh_frame_for_plt(this,
3867 Eh_cie
<size
>::eh_frame_cie
,
3868 sizeof (Eh_cie
<size
>::eh_frame_cie
),
3870 sizeof (default_fde
));
3871 this->eh_frame_added_
= true;
3875 Target_powerpc
<size
, big_endian
>*
3881 class Plt_stub_ent_hash
;
3882 typedef Unordered_map
<Plt_stub_ent
, unsigned int,
3883 Plt_stub_ent_hash
> Plt_stub_entries
;
3885 // Alignment of stub section.
3891 unsigned int min_align
= 32;
3892 unsigned int user_align
= 1 << parameters
->options().plt_align();
3893 return std::max(user_align
, min_align
);
3896 // Return the plt offset for the given call stub.
3898 plt_off(typename
Plt_stub_entries::const_iterator p
, bool* is_iplt
) const
3900 const Symbol
* gsym
= p
->first
.sym_
;
3903 *is_iplt
= (gsym
->type() == elfcpp::STT_GNU_IFUNC
3904 && gsym
->can_use_relative_reloc(false));
3905 return gsym
->plt_offset();
3910 const Sized_relobj_file
<size
, big_endian
>* relobj
= p
->first
.object_
;
3911 unsigned int local_sym_index
= p
->first
.locsym_
;
3912 return relobj
->local_plt_offset(local_sym_index
);
3916 // Size of a given plt call stub.
3918 plt_call_size(typename
Plt_stub_entries::const_iterator p
) const
3924 Address plt_addr
= this->plt_off(p
, &is_iplt
);
3926 plt_addr
+= this->targ_
->iplt_section()->address();
3928 plt_addr
+= this->targ_
->plt_section()->address();
3929 Address got_addr
= this->targ_
->got_section()->output_section()->address();
3930 const Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
3931 <const Powerpc_relobj
<size
, big_endian
>*>(p
->first
.object_
);
3932 got_addr
+= ppcobj
->toc_base_offset();
3933 Address off
= plt_addr
- got_addr
;
3934 unsigned int bytes
= 4 * 4 + 4 * (ha(off
) != 0);
3935 if (this->targ_
->abiversion() < 2)
3937 bool static_chain
= parameters
->options().plt_static_chain();
3938 bool thread_safe
= this->targ_
->plt_thread_safe();
3942 + 4 * (ha(off
+ 8 + 8 * static_chain
) != ha(off
)));
3944 unsigned int align
= 1 << parameters
->options().plt_align();
3946 bytes
= (bytes
+ align
- 1) & -align
;
3950 // Return long branch stub size.
3952 branch_stub_size(Address to
)
3955 = this->stub_address() + this->last_plt_size_
+ this->branch_size_
;
3956 if (to
- loc
+ (1 << 25) < 2 << 25)
3958 if (size
== 64 || !parameters
->options().output_is_position_independent())
3965 do_write(Output_file
*);
3967 // Plt call stub keys.
3971 Plt_stub_ent(const Symbol
* sym
)
3972 : sym_(sym
), object_(0), addend_(0), locsym_(0)
3975 Plt_stub_ent(const Sized_relobj_file
<size
, big_endian
>* object
,
3976 unsigned int locsym_index
)
3977 : sym_(NULL
), object_(object
), addend_(0), locsym_(locsym_index
)
3980 Plt_stub_ent(const Sized_relobj_file
<size
, big_endian
>* object
,
3982 unsigned int r_type
,
3984 : sym_(sym
), object_(0), addend_(0), locsym_(0)
3987 this->addend_
= addend
;
3988 else if (parameters
->options().output_is_position_independent()
3989 && r_type
== elfcpp::R_PPC_PLTREL24
)
3991 this->addend_
= addend
;
3992 if (this->addend_
>= 32768)
3993 this->object_
= object
;
3997 Plt_stub_ent(const Sized_relobj_file
<size
, big_endian
>* object
,
3998 unsigned int locsym_index
,
3999 unsigned int r_type
,
4001 : sym_(NULL
), object_(object
), addend_(0), locsym_(locsym_index
)
4004 this->addend_
= addend
;
4005 else if (parameters
->options().output_is_position_independent()
4006 && r_type
== elfcpp::R_PPC_PLTREL24
)
4007 this->addend_
= addend
;
4010 bool operator==(const Plt_stub_ent
& that
) const
4012 return (this->sym_
== that
.sym_
4013 && this->object_
== that
.object_
4014 && this->addend_
== that
.addend_
4015 && this->locsym_
== that
.locsym_
);
4019 const Sized_relobj_file
<size
, big_endian
>* object_
;
4020 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend_
;
4021 unsigned int locsym_
;
4024 class Plt_stub_ent_hash
4027 size_t operator()(const Plt_stub_ent
& ent
) const
4029 return (reinterpret_cast<uintptr_t>(ent
.sym_
)
4030 ^ reinterpret_cast<uintptr_t>(ent
.object_
)
4036 // Long branch stub keys.
4037 class Branch_stub_ent
4040 Branch_stub_ent(const Powerpc_relobj
<size
, big_endian
>* obj
,
4041 Address to
, bool save_res
)
4042 : dest_(to
), toc_base_off_(0), save_res_(save_res
)
4045 toc_base_off_
= obj
->toc_base_offset();
4048 bool operator==(const Branch_stub_ent
& that
) const
4050 return (this->dest_
== that
.dest_
4052 || this->toc_base_off_
== that
.toc_base_off_
));
4056 unsigned int toc_base_off_
;
4060 class Branch_stub_ent_hash
4063 size_t operator()(const Branch_stub_ent
& ent
) const
4064 { return ent
.dest_
^ ent
.toc_base_off_
; }
4067 // In a sane world this would be a global.
4068 Target_powerpc
<size
, big_endian
>* targ_
;
4069 // Map sym/object/addend to stub offset.
4070 Plt_stub_entries plt_call_stubs_
;
4071 // Map destination address to stub offset.
4072 typedef Unordered_map
<Branch_stub_ent
, unsigned int,
4073 Branch_stub_ent_hash
> Branch_stub_entries
;
4074 Branch_stub_entries long_branch_stubs_
;
4075 // size of input section
4076 section_size_type orig_data_size_
;
4078 section_size_type plt_size_
, last_plt_size_
, branch_size_
, last_branch_size_
;
4079 // Some rare cases cause (PR/20529) fluctuation in stub table
4080 // size, which leads to an endless relax loop. This is to be fixed
4081 // by, after the first few iterations, allowing only increase of
4082 // stub table size. This variable sets the minimal possible size of
4083 // a stub table, it is zero for the first few iterations, then
4084 // increases monotonically.
4085 Address min_size_threshold_
;
4086 // Whether .eh_frame info has been created for this stub section.
4087 bool eh_frame_added_
;
4088 // Set if this stub group needs a copy of out-of-line register
4089 // save/restore functions.
4090 bool need_save_res_
;
4093 // Add a plt call stub, if we do not already have one for this
4094 // sym/object/addend combo.
4096 template<int size
, bool big_endian
>
4098 Stub_table
<size
, big_endian
>::add_plt_call_entry(
4100 const Sized_relobj_file
<size
, big_endian
>* object
,
4102 unsigned int r_type
,
4105 Plt_stub_ent
ent(object
, gsym
, r_type
, addend
);
4106 unsigned int off
= this->plt_size_
;
4107 std::pair
<typename
Plt_stub_entries::iterator
, bool> p
4108 = this->plt_call_stubs_
.insert(std::make_pair(ent
, off
));
4110 this->plt_size_
= off
+ this->plt_call_size(p
.first
);
4111 return this->can_reach_stub(from
, off
, r_type
);
4114 template<int size
, bool big_endian
>
4116 Stub_table
<size
, big_endian
>::add_plt_call_entry(
4118 const Sized_relobj_file
<size
, big_endian
>* object
,
4119 unsigned int locsym_index
,
4120 unsigned int r_type
,
4123 Plt_stub_ent
ent(object
, locsym_index
, r_type
, addend
);
4124 unsigned int off
= this->plt_size_
;
4125 std::pair
<typename
Plt_stub_entries::iterator
, bool> p
4126 = this->plt_call_stubs_
.insert(std::make_pair(ent
, off
));
4128 this->plt_size_
= off
+ this->plt_call_size(p
.first
);
4129 return this->can_reach_stub(from
, off
, r_type
);
4132 // Find a plt call stub.
4134 template<int size
, bool big_endian
>
4135 typename Stub_table
<size
, big_endian
>::Address
4136 Stub_table
<size
, big_endian
>::find_plt_call_entry(
4137 const Sized_relobj_file
<size
, big_endian
>* object
,
4139 unsigned int r_type
,
4140 Address addend
) const
4142 Plt_stub_ent
ent(object
, gsym
, r_type
, addend
);
4143 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
4144 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
4147 template<int size
, bool big_endian
>
4148 typename Stub_table
<size
, big_endian
>::Address
4149 Stub_table
<size
, big_endian
>::find_plt_call_entry(const Symbol
* gsym
) const
4151 Plt_stub_ent
ent(gsym
);
4152 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
4153 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
4156 template<int size
, bool big_endian
>
4157 typename Stub_table
<size
, big_endian
>::Address
4158 Stub_table
<size
, big_endian
>::find_plt_call_entry(
4159 const Sized_relobj_file
<size
, big_endian
>* object
,
4160 unsigned int locsym_index
,
4161 unsigned int r_type
,
4162 Address addend
) const
4164 Plt_stub_ent
ent(object
, locsym_index
, r_type
, addend
);
4165 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
4166 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
4169 template<int size
, bool big_endian
>
4170 typename Stub_table
<size
, big_endian
>::Address
4171 Stub_table
<size
, big_endian
>::find_plt_call_entry(
4172 const Sized_relobj_file
<size
, big_endian
>* object
,
4173 unsigned int locsym_index
) const
4175 Plt_stub_ent
ent(object
, locsym_index
);
4176 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
4177 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
4180 // Add a long branch stub if we don't already have one to given
4183 template<int size
, bool big_endian
>
4185 Stub_table
<size
, big_endian
>::add_long_branch_entry(
4186 const Powerpc_relobj
<size
, big_endian
>* object
,
4187 unsigned int r_type
,
4192 Branch_stub_ent
ent(object
, to
, save_res
);
4193 Address off
= this->branch_size_
;
4194 if (this->long_branch_stubs_
.insert(std::make_pair(ent
, off
)).second
)
4197 this->need_save_res_
= true;
4200 unsigned int stub_size
= this->branch_stub_size(to
);
4201 this->branch_size_
= off
+ stub_size
;
4202 if (size
== 64 && stub_size
!= 4)
4203 this->targ_
->add_branch_lookup_table(to
);
4206 return this->can_reach_stub(from
, off
, r_type
);
4209 // Find long branch stub offset.
4211 template<int size
, bool big_endian
>
4212 typename Stub_table
<size
, big_endian
>::Address
4213 Stub_table
<size
, big_endian
>::find_long_branch_entry(
4214 const Powerpc_relobj
<size
, big_endian
>* object
,
4217 Branch_stub_ent
ent(object
, to
, false);
4218 typename
Branch_stub_entries::const_iterator p
4219 = this->long_branch_stubs_
.find(ent
);
4220 if (p
== this->long_branch_stubs_
.end())
4221 return invalid_address
;
4222 if (p
->first
.save_res_
)
4223 return to
- this->targ_
->savres_section()->address() + this->branch_size_
;
4227 // A class to handle .glink.
4229 template<int size
, bool big_endian
>
4230 class Output_data_glink
: public Output_section_data
4233 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
4234 static const Address invalid_address
= static_cast<Address
>(0) - 1;
4235 static const int pltresolve_size
= 16*4;
4237 Output_data_glink(Target_powerpc
<size
, big_endian
>* targ
)
4238 : Output_section_data(16), targ_(targ
), global_entry_stubs_(),
4239 end_branch_table_(), ge_size_(0)
4243 add_eh_frame(Layout
* layout
);
4246 add_global_entry(const Symbol
*);
4249 find_global_entry(const Symbol
*) const;
4252 global_entry_address() const
4254 gold_assert(this->is_data_size_valid());
4255 unsigned int global_entry_off
= (this->end_branch_table_
+ 15) & -16;
4256 return this->address() + global_entry_off
;
4260 // Write to a map file.
4262 do_print_to_mapfile(Mapfile
* mapfile
) const
4263 { mapfile
->print_output_data(this, _("** glink")); }
4267 set_final_data_size();
4271 do_write(Output_file
*);
4273 // Allows access to .got and .plt for do_write.
4274 Target_powerpc
<size
, big_endian
>* targ_
;
4276 // Map sym to stub offset.
4277 typedef Unordered_map
<const Symbol
*, unsigned int> Global_entry_stub_entries
;
4278 Global_entry_stub_entries global_entry_stubs_
;
4280 unsigned int end_branch_table_
, ge_size_
;
4283 template<int size
, bool big_endian
>
4285 Output_data_glink
<size
, big_endian
>::add_eh_frame(Layout
* layout
)
4287 if (!parameters
->options().ld_generated_unwind_info())
4292 if (this->targ_
->abiversion() < 2)
4293 layout
->add_eh_frame_for_plt(this,
4294 Eh_cie
<64>::eh_frame_cie
,
4295 sizeof (Eh_cie
<64>::eh_frame_cie
),
4296 glink_eh_frame_fde_64v1
,
4297 sizeof (glink_eh_frame_fde_64v1
));
4299 layout
->add_eh_frame_for_plt(this,
4300 Eh_cie
<64>::eh_frame_cie
,
4301 sizeof (Eh_cie
<64>::eh_frame_cie
),
4302 glink_eh_frame_fde_64v2
,
4303 sizeof (glink_eh_frame_fde_64v2
));
4307 // 32-bit .glink can use the default since the CIE return
4308 // address reg, LR, is valid.
4309 layout
->add_eh_frame_for_plt(this,
4310 Eh_cie
<32>::eh_frame_cie
,
4311 sizeof (Eh_cie
<32>::eh_frame_cie
),
4313 sizeof (default_fde
));
4314 // Except where LR is used in a PIC __glink_PLTresolve.
4315 if (parameters
->options().output_is_position_independent())
4316 layout
->add_eh_frame_for_plt(this,
4317 Eh_cie
<32>::eh_frame_cie
,
4318 sizeof (Eh_cie
<32>::eh_frame_cie
),
4319 glink_eh_frame_fde_32
,
4320 sizeof (glink_eh_frame_fde_32
));
4324 template<int size
, bool big_endian
>
4326 Output_data_glink
<size
, big_endian
>::add_global_entry(const Symbol
* gsym
)
4328 std::pair
<typename
Global_entry_stub_entries::iterator
, bool> p
4329 = this->global_entry_stubs_
.insert(std::make_pair(gsym
, this->ge_size_
));
4331 this->ge_size_
+= 16;
4334 template<int size
, bool big_endian
>
4335 typename Output_data_glink
<size
, big_endian
>::Address
4336 Output_data_glink
<size
, big_endian
>::find_global_entry(const Symbol
* gsym
) const
4338 typename
Global_entry_stub_entries::const_iterator p
4339 = this->global_entry_stubs_
.find(gsym
);
4340 return p
== this->global_entry_stubs_
.end() ? invalid_address
: p
->second
;
4343 template<int size
, bool big_endian
>
4345 Output_data_glink
<size
, big_endian
>::set_final_data_size()
4347 unsigned int count
= this->targ_
->plt_entry_count();
4348 section_size_type total
= 0;
4354 // space for branch table
4355 total
+= 4 * (count
- 1);
4357 total
+= -total
& 15;
4358 total
+= this->pltresolve_size
;
4362 total
+= this->pltresolve_size
;
4364 // space for branch table
4366 if (this->targ_
->abiversion() < 2)
4370 total
+= 4 * (count
- 0x8000);
4374 this->end_branch_table_
= total
;
4375 total
= (total
+ 15) & -16;
4376 total
+= this->ge_size_
;
4378 this->set_data_size(total
);
4381 // Write out plt and long branch stub code.
4383 template<int size
, bool big_endian
>
4385 Stub_table
<size
, big_endian
>::do_write(Output_file
* of
)
4387 if (this->plt_call_stubs_
.empty()
4388 && this->long_branch_stubs_
.empty())
4391 const section_size_type start_off
= this->offset();
4392 const section_size_type off
= this->stub_offset();
4393 const section_size_type oview_size
=
4394 convert_to_section_size_type(this->data_size() - (off
- start_off
));
4395 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
4400 const Output_data_got_powerpc
<size
, big_endian
>* got
4401 = this->targ_
->got_section();
4402 Address got_os_addr
= got
->output_section()->address();
4404 if (!this->plt_call_stubs_
.empty())
4406 // The base address of the .plt section.
4407 Address plt_base
= this->targ_
->plt_section()->address();
4408 Address iplt_base
= invalid_address
;
4410 // Write out plt call stubs.
4411 typename
Plt_stub_entries::const_iterator cs
;
4412 for (cs
= this->plt_call_stubs_
.begin();
4413 cs
!= this->plt_call_stubs_
.end();
4417 Address pltoff
= this->plt_off(cs
, &is_iplt
);
4418 Address plt_addr
= pltoff
;
4421 if (iplt_base
== invalid_address
)
4422 iplt_base
= this->targ_
->iplt_section()->address();
4423 plt_addr
+= iplt_base
;
4426 plt_addr
+= plt_base
;
4427 const Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
4428 <const Powerpc_relobj
<size
, big_endian
>*>(cs
->first
.object_
);
4429 Address got_addr
= got_os_addr
+ ppcobj
->toc_base_offset();
4430 Address off
= plt_addr
- got_addr
;
4432 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
4433 gold_error(_("%s: linkage table error against `%s'"),
4434 cs
->first
.object_
->name().c_str(),
4435 cs
->first
.sym_
->demangled_name().c_str());
4437 bool plt_load_toc
= this->targ_
->abiversion() < 2;
4439 = plt_load_toc
&& parameters
->options().plt_static_chain();
4441 = plt_load_toc
&& this->targ_
->plt_thread_safe();
4442 bool use_fake_dep
= false;
4443 Address cmp_branch_off
= 0;
4446 unsigned int pltindex
4447 = ((pltoff
- this->targ_
->first_plt_entry_offset())
4448 / this->targ_
->plt_entry_size());
4450 = (this->targ_
->glink_section()->pltresolve_size
4452 if (pltindex
> 32768)
4453 glinkoff
+= (pltindex
- 32768) * 4;
4455 = this->targ_
->glink_section()->address() + glinkoff
;
4457 = (this->stub_address() + cs
->second
+ 24
4458 + 4 * (ha(off
) != 0)
4459 + 4 * (ha(off
+ 8 + 8 * static_chain
) != ha(off
))
4460 + 4 * static_chain
);
4461 cmp_branch_off
= to
- from
;
4462 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
4465 p
= oview
+ cs
->second
;
4468 write_insn
<big_endian
>(p
, std_2_1
+ this->targ_
->stk_toc());
4472 write_insn
<big_endian
>(p
, addis_11_2
+ ha(off
));
4474 write_insn
<big_endian
>(p
, ld_12_11
+ l(off
));
4479 write_insn
<big_endian
>(p
, addis_12_2
+ ha(off
));
4481 write_insn
<big_endian
>(p
, ld_12_12
+ l(off
));
4485 && ha(off
+ 8 + 8 * static_chain
) != ha(off
))
4487 write_insn
<big_endian
>(p
, addi_11_11
+ l(off
));
4491 write_insn
<big_endian
>(p
, mtctr_12
);
4497 write_insn
<big_endian
>(p
, xor_2_12_12
);
4499 write_insn
<big_endian
>(p
, add_11_11_2
);
4502 write_insn
<big_endian
>(p
, ld_2_11
+ l(off
+ 8));
4506 write_insn
<big_endian
>(p
, ld_11_11
+ l(off
+ 16));
4513 write_insn
<big_endian
>(p
, std_2_1
+ this->targ_
->stk_toc());
4515 write_insn
<big_endian
>(p
, ld_12_2
+ l(off
));
4518 && ha(off
+ 8 + 8 * static_chain
) != ha(off
))
4520 write_insn
<big_endian
>(p
, addi_2_2
+ l(off
));
4524 write_insn
<big_endian
>(p
, mtctr_12
);
4530 write_insn
<big_endian
>(p
, xor_11_12_12
);
4532 write_insn
<big_endian
>(p
, add_2_2_11
);
4537 write_insn
<big_endian
>(p
, ld_11_2
+ l(off
+ 16));
4540 write_insn
<big_endian
>(p
, ld_2_2
+ l(off
+ 8));
4544 if (thread_safe
&& !use_fake_dep
)
4546 write_insn
<big_endian
>(p
, cmpldi_2_0
);
4548 write_insn
<big_endian
>(p
, bnectr_p4
);
4550 write_insn
<big_endian
>(p
, b
| (cmp_branch_off
& 0x3fffffc));
4553 write_insn
<big_endian
>(p
, bctr
);
4557 // Write out long branch stubs.
4558 typename
Branch_stub_entries::const_iterator bs
;
4559 for (bs
= this->long_branch_stubs_
.begin();
4560 bs
!= this->long_branch_stubs_
.end();
4563 if (bs
->first
.save_res_
)
4565 p
= oview
+ this->plt_size_
+ bs
->second
;
4566 Address loc
= this->stub_address() + this->plt_size_
+ bs
->second
;
4567 Address delta
= bs
->first
.dest_
- loc
;
4568 if (delta
+ (1 << 25) < 2 << 25)
4569 write_insn
<big_endian
>(p
, b
| (delta
& 0x3fffffc));
4573 = this->targ_
->find_branch_lookup_table(bs
->first
.dest_
);
4574 gold_assert(brlt_addr
!= invalid_address
);
4575 brlt_addr
+= this->targ_
->brlt_section()->address();
4576 Address got_addr
= got_os_addr
+ bs
->first
.toc_base_off_
;
4577 Address brltoff
= brlt_addr
- got_addr
;
4578 if (ha(brltoff
) == 0)
4580 write_insn
<big_endian
>(p
, ld_12_2
+ l(brltoff
)), p
+= 4;
4584 write_insn
<big_endian
>(p
, addis_12_2
+ ha(brltoff
)), p
+= 4;
4585 write_insn
<big_endian
>(p
, ld_12_12
+ l(brltoff
)), p
+= 4;
4587 write_insn
<big_endian
>(p
, mtctr_12
), p
+= 4;
4588 write_insn
<big_endian
>(p
, bctr
);
4594 if (!this->plt_call_stubs_
.empty())
4596 // The base address of the .plt section.
4597 Address plt_base
= this->targ_
->plt_section()->address();
4598 Address iplt_base
= invalid_address
;
4599 // The address of _GLOBAL_OFFSET_TABLE_.
4600 Address g_o_t
= invalid_address
;
4602 // Write out plt call stubs.
4603 typename
Plt_stub_entries::const_iterator cs
;
4604 for (cs
= this->plt_call_stubs_
.begin();
4605 cs
!= this->plt_call_stubs_
.end();
4609 Address plt_addr
= this->plt_off(cs
, &is_iplt
);
4612 if (iplt_base
== invalid_address
)
4613 iplt_base
= this->targ_
->iplt_section()->address();
4614 plt_addr
+= iplt_base
;
4617 plt_addr
+= plt_base
;
4619 p
= oview
+ cs
->second
;
4620 if (parameters
->options().output_is_position_independent())
4623 const Powerpc_relobj
<size
, big_endian
>* ppcobj
4624 = (static_cast<const Powerpc_relobj
<size
, big_endian
>*>
4625 (cs
->first
.object_
));
4626 if (ppcobj
!= NULL
&& cs
->first
.addend_
>= 32768)
4628 unsigned int got2
= ppcobj
->got2_shndx();
4629 got_addr
= ppcobj
->get_output_section_offset(got2
);
4630 gold_assert(got_addr
!= invalid_address
);
4631 got_addr
+= (ppcobj
->output_section(got2
)->address()
4632 + cs
->first
.addend_
);
4636 if (g_o_t
== invalid_address
)
4638 const Output_data_got_powerpc
<size
, big_endian
>* got
4639 = this->targ_
->got_section();
4640 g_o_t
= got
->address() + got
->g_o_t();
4645 Address off
= plt_addr
- got_addr
;
4648 write_insn
<big_endian
>(p
+ 0, lwz_11_30
+ l(off
));
4649 write_insn
<big_endian
>(p
+ 4, mtctr_11
);
4650 write_insn
<big_endian
>(p
+ 8, bctr
);
4654 write_insn
<big_endian
>(p
+ 0, addis_11_30
+ ha(off
));
4655 write_insn
<big_endian
>(p
+ 4, lwz_11_11
+ l(off
));
4656 write_insn
<big_endian
>(p
+ 8, mtctr_11
);
4657 write_insn
<big_endian
>(p
+ 12, bctr
);
4662 write_insn
<big_endian
>(p
+ 0, lis_11
+ ha(plt_addr
));
4663 write_insn
<big_endian
>(p
+ 4, lwz_11_11
+ l(plt_addr
));
4664 write_insn
<big_endian
>(p
+ 8, mtctr_11
);
4665 write_insn
<big_endian
>(p
+ 12, bctr
);
4670 // Write out long branch stubs.
4671 typename
Branch_stub_entries::const_iterator bs
;
4672 for (bs
= this->long_branch_stubs_
.begin();
4673 bs
!= this->long_branch_stubs_
.end();
4676 if (bs
->first
.save_res_
)
4678 p
= oview
+ this->plt_size_
+ bs
->second
;
4679 Address loc
= this->stub_address() + this->plt_size_
+ bs
->second
;
4680 Address delta
= bs
->first
.dest_
- loc
;
4681 if (delta
+ (1 << 25) < 2 << 25)
4682 write_insn
<big_endian
>(p
, b
| (delta
& 0x3fffffc));
4683 else if (!parameters
->options().output_is_position_independent())
4685 write_insn
<big_endian
>(p
+ 0, lis_12
+ ha(bs
->first
.dest_
));
4686 write_insn
<big_endian
>(p
+ 4, addi_12_12
+ l(bs
->first
.dest_
));
4687 write_insn
<big_endian
>(p
+ 8, mtctr_12
);
4688 write_insn
<big_endian
>(p
+ 12, bctr
);
4693 write_insn
<big_endian
>(p
+ 0, mflr_0
);
4694 write_insn
<big_endian
>(p
+ 4, bcl_20_31
);
4695 write_insn
<big_endian
>(p
+ 8, mflr_12
);
4696 write_insn
<big_endian
>(p
+ 12, addis_12_12
+ ha(delta
));
4697 write_insn
<big_endian
>(p
+ 16, addi_12_12
+ l(delta
));
4698 write_insn
<big_endian
>(p
+ 20, mtlr_0
);
4699 write_insn
<big_endian
>(p
+ 24, mtctr_12
);
4700 write_insn
<big_endian
>(p
+ 28, bctr
);
4704 if (this->need_save_res_
)
4706 p
= oview
+ this->plt_size_
+ this->branch_size_
;
4707 memcpy (p
, this->targ_
->savres_section()->contents(),
4708 this->targ_
->savres_section()->data_size());
4712 // Write out .glink.
4714 template<int size
, bool big_endian
>
4716 Output_data_glink
<size
, big_endian
>::do_write(Output_file
* of
)
4718 const section_size_type off
= this->offset();
4719 const section_size_type oview_size
=
4720 convert_to_section_size_type(this->data_size());
4721 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
4724 // The base address of the .plt section.
4725 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
4726 Address plt_base
= this->targ_
->plt_section()->address();
4730 if (this->end_branch_table_
!= 0)
4732 // Write pltresolve stub.
4734 Address after_bcl
= this->address() + 16;
4735 Address pltoff
= plt_base
- after_bcl
;
4737 elfcpp::Swap
<64, big_endian
>::writeval(p
, pltoff
), p
+= 8;
4739 if (this->targ_
->abiversion() < 2)
4741 write_insn
<big_endian
>(p
, mflr_12
), p
+= 4;
4742 write_insn
<big_endian
>(p
, bcl_20_31
), p
+= 4;
4743 write_insn
<big_endian
>(p
, mflr_11
), p
+= 4;
4744 write_insn
<big_endian
>(p
, ld_2_11
+ l(-16)), p
+= 4;
4745 write_insn
<big_endian
>(p
, mtlr_12
), p
+= 4;
4746 write_insn
<big_endian
>(p
, add_11_2_11
), p
+= 4;
4747 write_insn
<big_endian
>(p
, ld_12_11
+ 0), p
+= 4;
4748 write_insn
<big_endian
>(p
, ld_2_11
+ 8), p
+= 4;
4749 write_insn
<big_endian
>(p
, mtctr_12
), p
+= 4;
4750 write_insn
<big_endian
>(p
, ld_11_11
+ 16), p
+= 4;
4754 write_insn
<big_endian
>(p
, mflr_0
), p
+= 4;
4755 write_insn
<big_endian
>(p
, bcl_20_31
), p
+= 4;
4756 write_insn
<big_endian
>(p
, mflr_11
), p
+= 4;
4757 write_insn
<big_endian
>(p
, ld_2_11
+ l(-16)), p
+= 4;
4758 write_insn
<big_endian
>(p
, mtlr_0
), p
+= 4;
4759 write_insn
<big_endian
>(p
, sub_12_12_11
), p
+= 4;
4760 write_insn
<big_endian
>(p
, add_11_2_11
), p
+= 4;
4761 write_insn
<big_endian
>(p
, addi_0_12
+ l(-48)), p
+= 4;
4762 write_insn
<big_endian
>(p
, ld_12_11
+ 0), p
+= 4;
4763 write_insn
<big_endian
>(p
, srdi_0_0_2
), p
+= 4;
4764 write_insn
<big_endian
>(p
, mtctr_12
), p
+= 4;
4765 write_insn
<big_endian
>(p
, ld_11_11
+ 8), p
+= 4;
4767 write_insn
<big_endian
>(p
, bctr
), p
+= 4;
4768 while (p
< oview
+ this->pltresolve_size
)
4769 write_insn
<big_endian
>(p
, nop
), p
+= 4;
4771 // Write lazy link call stubs.
4773 while (p
< oview
+ this->end_branch_table_
)
4775 if (this->targ_
->abiversion() < 2)
4779 write_insn
<big_endian
>(p
, li_0_0
+ indx
), p
+= 4;
4783 write_insn
<big_endian
>(p
, lis_0
+ hi(indx
)), p
+= 4;
4784 write_insn
<big_endian
>(p
, ori_0_0_0
+ l(indx
)), p
+= 4;
4787 uint32_t branch_off
= 8 - (p
- oview
);
4788 write_insn
<big_endian
>(p
, b
+ (branch_off
& 0x3fffffc)), p
+= 4;
4793 Address plt_base
= this->targ_
->plt_section()->address();
4794 Address iplt_base
= invalid_address
;
4795 unsigned int global_entry_off
= (this->end_branch_table_
+ 15) & -16;
4796 Address global_entry_base
= this->address() + global_entry_off
;
4797 typename
Global_entry_stub_entries::const_iterator ge
;
4798 for (ge
= this->global_entry_stubs_
.begin();
4799 ge
!= this->global_entry_stubs_
.end();
4802 p
= oview
+ global_entry_off
+ ge
->second
;
4803 Address plt_addr
= ge
->first
->plt_offset();
4804 if (ge
->first
->type() == elfcpp::STT_GNU_IFUNC
4805 && ge
->first
->can_use_relative_reloc(false))
4807 if (iplt_base
== invalid_address
)
4808 iplt_base
= this->targ_
->iplt_section()->address();
4809 plt_addr
+= iplt_base
;
4812 plt_addr
+= plt_base
;
4813 Address my_addr
= global_entry_base
+ ge
->second
;
4814 Address off
= plt_addr
- my_addr
;
4816 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
4817 gold_error(_("%s: linkage table error against `%s'"),
4818 ge
->first
->object()->name().c_str(),
4819 ge
->first
->demangled_name().c_str());
4821 write_insn
<big_endian
>(p
, addis_12_12
+ ha(off
)), p
+= 4;
4822 write_insn
<big_endian
>(p
, ld_12_12
+ l(off
)), p
+= 4;
4823 write_insn
<big_endian
>(p
, mtctr_12
), p
+= 4;
4824 write_insn
<big_endian
>(p
, bctr
);
4829 const Output_data_got_powerpc
<size
, big_endian
>* got
4830 = this->targ_
->got_section();
4831 // The address of _GLOBAL_OFFSET_TABLE_.
4832 Address g_o_t
= got
->address() + got
->g_o_t();
4834 // Write out pltresolve branch table.
4836 unsigned int the_end
= oview_size
- this->pltresolve_size
;
4837 unsigned char* end_p
= oview
+ the_end
;
4838 while (p
< end_p
- 8 * 4)
4839 write_insn
<big_endian
>(p
, b
+ end_p
- p
), p
+= 4;
4841 write_insn
<big_endian
>(p
, nop
), p
+= 4;
4843 // Write out pltresolve call stub.
4844 if (parameters
->options().output_is_position_independent())
4846 Address res0_off
= 0;
4847 Address after_bcl_off
= the_end
+ 12;
4848 Address bcl_res0
= after_bcl_off
- res0_off
;
4850 write_insn
<big_endian
>(p
+ 0, addis_11_11
+ ha(bcl_res0
));
4851 write_insn
<big_endian
>(p
+ 4, mflr_0
);
4852 write_insn
<big_endian
>(p
+ 8, bcl_20_31
);
4853 write_insn
<big_endian
>(p
+ 12, addi_11_11
+ l(bcl_res0
));
4854 write_insn
<big_endian
>(p
+ 16, mflr_12
);
4855 write_insn
<big_endian
>(p
+ 20, mtlr_0
);
4856 write_insn
<big_endian
>(p
+ 24, sub_11_11_12
);
4858 Address got_bcl
= g_o_t
+ 4 - (after_bcl_off
+ this->address());
4860 write_insn
<big_endian
>(p
+ 28, addis_12_12
+ ha(got_bcl
));
4861 if (ha(got_bcl
) == ha(got_bcl
+ 4))
4863 write_insn
<big_endian
>(p
+ 32, lwz_0_12
+ l(got_bcl
));
4864 write_insn
<big_endian
>(p
+ 36, lwz_12_12
+ l(got_bcl
+ 4));
4868 write_insn
<big_endian
>(p
+ 32, lwzu_0_12
+ l(got_bcl
));
4869 write_insn
<big_endian
>(p
+ 36, lwz_12_12
+ 4);
4871 write_insn
<big_endian
>(p
+ 40, mtctr_0
);
4872 write_insn
<big_endian
>(p
+ 44, add_0_11_11
);
4873 write_insn
<big_endian
>(p
+ 48, add_11_0_11
);
4874 write_insn
<big_endian
>(p
+ 52, bctr
);
4875 write_insn
<big_endian
>(p
+ 56, nop
);
4876 write_insn
<big_endian
>(p
+ 60, nop
);
4880 Address res0
= this->address();
4882 write_insn
<big_endian
>(p
+ 0, lis_12
+ ha(g_o_t
+ 4));
4883 write_insn
<big_endian
>(p
+ 4, addis_11_11
+ ha(-res0
));
4884 if (ha(g_o_t
+ 4) == ha(g_o_t
+ 8))
4885 write_insn
<big_endian
>(p
+ 8, lwz_0_12
+ l(g_o_t
+ 4));
4887 write_insn
<big_endian
>(p
+ 8, lwzu_0_12
+ l(g_o_t
+ 4));
4888 write_insn
<big_endian
>(p
+ 12, addi_11_11
+ l(-res0
));
4889 write_insn
<big_endian
>(p
+ 16, mtctr_0
);
4890 write_insn
<big_endian
>(p
+ 20, add_0_11_11
);
4891 if (ha(g_o_t
+ 4) == ha(g_o_t
+ 8))
4892 write_insn
<big_endian
>(p
+ 24, lwz_12_12
+ l(g_o_t
+ 8));
4894 write_insn
<big_endian
>(p
+ 24, lwz_12_12
+ 4);
4895 write_insn
<big_endian
>(p
+ 28, add_11_0_11
);
4896 write_insn
<big_endian
>(p
+ 32, bctr
);
4897 write_insn
<big_endian
>(p
+ 36, nop
);
4898 write_insn
<big_endian
>(p
+ 40, nop
);
4899 write_insn
<big_endian
>(p
+ 44, nop
);
4900 write_insn
<big_endian
>(p
+ 48, nop
);
4901 write_insn
<big_endian
>(p
+ 52, nop
);
4902 write_insn
<big_endian
>(p
+ 56, nop
);
4903 write_insn
<big_endian
>(p
+ 60, nop
);
4908 of
->write_output_view(off
, oview_size
, oview
);
4912 // A class to handle linker generated save/restore functions.
4914 template<int size
, bool big_endian
>
4915 class Output_data_save_res
: public Output_section_data_build
4918 Output_data_save_res(Symbol_table
* symtab
);
4920 const unsigned char*
4927 // Write to a map file.
4929 do_print_to_mapfile(Mapfile
* mapfile
) const
4930 { mapfile
->print_output_data(this, _("** save/restore")); }
4933 do_write(Output_file
*);
4936 // The maximum size of save/restore contents.
4937 static const unsigned int savres_max
= 218*4;
4940 savres_define(Symbol_table
* symtab
,
4942 unsigned int lo
, unsigned int hi
,
4943 unsigned char* write_ent(unsigned char*, int),
4944 unsigned char* write_tail(unsigned char*, int));
4946 unsigned char *contents_
;
4949 template<bool big_endian
>
4950 static unsigned char*
4951 savegpr0(unsigned char* p
, int r
)
4953 uint32_t insn
= std_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4954 write_insn
<big_endian
>(p
, insn
);
4958 template<bool big_endian
>
4959 static unsigned char*
4960 savegpr0_tail(unsigned char* p
, int r
)
4962 p
= savegpr0
<big_endian
>(p
, r
);
4963 uint32_t insn
= std_0_1
+ 16;
4964 write_insn
<big_endian
>(p
, insn
);
4966 write_insn
<big_endian
>(p
, blr
);
4970 template<bool big_endian
>
4971 static unsigned char*
4972 restgpr0(unsigned char* p
, int r
)
4974 uint32_t insn
= ld_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4975 write_insn
<big_endian
>(p
, insn
);
4979 template<bool big_endian
>
4980 static unsigned char*
4981 restgpr0_tail(unsigned char* p
, int r
)
4983 uint32_t insn
= ld_0_1
+ 16;
4984 write_insn
<big_endian
>(p
, insn
);
4986 p
= restgpr0
<big_endian
>(p
, r
);
4987 write_insn
<big_endian
>(p
, mtlr_0
);
4991 p
= restgpr0
<big_endian
>(p
, 30);
4992 p
= restgpr0
<big_endian
>(p
, 31);
4994 write_insn
<big_endian
>(p
, blr
);
4998 template<bool big_endian
>
4999 static unsigned char*
5000 savegpr1(unsigned char* p
, int r
)
5002 uint32_t insn
= std_0_12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
5003 write_insn
<big_endian
>(p
, insn
);
5007 template<bool big_endian
>
5008 static unsigned char*
5009 savegpr1_tail(unsigned char* p
, int r
)
5011 p
= savegpr1
<big_endian
>(p
, r
);
5012 write_insn
<big_endian
>(p
, blr
);
5016 template<bool big_endian
>
5017 static unsigned char*
5018 restgpr1(unsigned char* p
, int r
)
5020 uint32_t insn
= ld_0_12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
5021 write_insn
<big_endian
>(p
, insn
);
5025 template<bool big_endian
>
5026 static unsigned char*
5027 restgpr1_tail(unsigned char* p
, int r
)
5029 p
= restgpr1
<big_endian
>(p
, r
);
5030 write_insn
<big_endian
>(p
, blr
);
5034 template<bool big_endian
>
5035 static unsigned char*
5036 savefpr(unsigned char* p
, int r
)
5038 uint32_t insn
= stfd_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
5039 write_insn
<big_endian
>(p
, insn
);
5043 template<bool big_endian
>
5044 static unsigned char*
5045 savefpr0_tail(unsigned char* p
, int r
)
5047 p
= savefpr
<big_endian
>(p
, r
);
5048 write_insn
<big_endian
>(p
, std_0_1
+ 16);
5050 write_insn
<big_endian
>(p
, blr
);
5054 template<bool big_endian
>
5055 static unsigned char*
5056 restfpr(unsigned char* p
, int r
)
5058 uint32_t insn
= lfd_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
5059 write_insn
<big_endian
>(p
, insn
);
5063 template<bool big_endian
>
5064 static unsigned char*
5065 restfpr0_tail(unsigned char* p
, int r
)
5067 write_insn
<big_endian
>(p
, ld_0_1
+ 16);
5069 p
= restfpr
<big_endian
>(p
, r
);
5070 write_insn
<big_endian
>(p
, mtlr_0
);
5074 p
= restfpr
<big_endian
>(p
, 30);
5075 p
= restfpr
<big_endian
>(p
, 31);
5077 write_insn
<big_endian
>(p
, blr
);
5081 template<bool big_endian
>
5082 static unsigned char*
5083 savefpr1_tail(unsigned char* p
, int r
)
5085 p
= savefpr
<big_endian
>(p
, r
);
5086 write_insn
<big_endian
>(p
, blr
);
5090 template<bool big_endian
>
5091 static unsigned char*
5092 restfpr1_tail(unsigned char* p
, int r
)
5094 p
= restfpr
<big_endian
>(p
, r
);
5095 write_insn
<big_endian
>(p
, blr
);
5099 template<bool big_endian
>
5100 static unsigned char*
5101 savevr(unsigned char* p
, int r
)
5103 uint32_t insn
= li_12_0
+ (1 << 16) - (32 - r
) * 16;
5104 write_insn
<big_endian
>(p
, insn
);
5106 insn
= stvx_0_12_0
+ (r
<< 21);
5107 write_insn
<big_endian
>(p
, insn
);
5111 template<bool big_endian
>
5112 static unsigned char*
5113 savevr_tail(unsigned char* p
, int r
)
5115 p
= savevr
<big_endian
>(p
, r
);
5116 write_insn
<big_endian
>(p
, blr
);
5120 template<bool big_endian
>
5121 static unsigned char*
5122 restvr(unsigned char* p
, int r
)
5124 uint32_t insn
= li_12_0
+ (1 << 16) - (32 - r
) * 16;
5125 write_insn
<big_endian
>(p
, insn
);
5127 insn
= lvx_0_12_0
+ (r
<< 21);
5128 write_insn
<big_endian
>(p
, insn
);
5132 template<bool big_endian
>
5133 static unsigned char*
5134 restvr_tail(unsigned char* p
, int r
)
5136 p
= restvr
<big_endian
>(p
, r
);
5137 write_insn
<big_endian
>(p
, blr
);
5142 template<int size
, bool big_endian
>
5143 Output_data_save_res
<size
, big_endian
>::Output_data_save_res(
5144 Symbol_table
* symtab
)
5145 : Output_section_data_build(4),
5148 this->savres_define(symtab
,
5149 "_savegpr0_", 14, 31,
5150 savegpr0
<big_endian
>, savegpr0_tail
<big_endian
>);
5151 this->savres_define(symtab
,
5152 "_restgpr0_", 14, 29,
5153 restgpr0
<big_endian
>, restgpr0_tail
<big_endian
>);
5154 this->savres_define(symtab
,
5155 "_restgpr0_", 30, 31,
5156 restgpr0
<big_endian
>, restgpr0_tail
<big_endian
>);
5157 this->savres_define(symtab
,
5158 "_savegpr1_", 14, 31,
5159 savegpr1
<big_endian
>, savegpr1_tail
<big_endian
>);
5160 this->savres_define(symtab
,
5161 "_restgpr1_", 14, 31,
5162 restgpr1
<big_endian
>, restgpr1_tail
<big_endian
>);
5163 this->savres_define(symtab
,
5164 "_savefpr_", 14, 31,
5165 savefpr
<big_endian
>, savefpr0_tail
<big_endian
>);
5166 this->savres_define(symtab
,
5167 "_restfpr_", 14, 29,
5168 restfpr
<big_endian
>, restfpr0_tail
<big_endian
>);
5169 this->savres_define(symtab
,
5170 "_restfpr_", 30, 31,
5171 restfpr
<big_endian
>, restfpr0_tail
<big_endian
>);
5172 this->savres_define(symtab
,
5174 savefpr
<big_endian
>, savefpr1_tail
<big_endian
>);
5175 this->savres_define(symtab
,
5177 restfpr
<big_endian
>, restfpr1_tail
<big_endian
>);
5178 this->savres_define(symtab
,
5180 savevr
<big_endian
>, savevr_tail
<big_endian
>);
5181 this->savres_define(symtab
,
5183 restvr
<big_endian
>, restvr_tail
<big_endian
>);
5186 template<int size
, bool big_endian
>
5188 Output_data_save_res
<size
, big_endian
>::savres_define(
5189 Symbol_table
* symtab
,
5191 unsigned int lo
, unsigned int hi
,
5192 unsigned char* write_ent(unsigned char*, int),
5193 unsigned char* write_tail(unsigned char*, int))
5195 size_t len
= strlen(name
);
5196 bool writing
= false;
5199 memcpy(sym
, name
, len
);
5202 for (unsigned int i
= lo
; i
<= hi
; i
++)
5204 sym
[len
+ 0] = i
/ 10 + '0';
5205 sym
[len
+ 1] = i
% 10 + '0';
5206 Symbol
* gsym
= symtab
->lookup(sym
);
5207 bool refd
= gsym
!= NULL
&& gsym
->is_undefined();
5208 writing
= writing
|| refd
;
5211 if (this->contents_
== NULL
)
5212 this->contents_
= new unsigned char[this->savres_max
];
5214 section_size_type value
= this->current_data_size();
5215 unsigned char* p
= this->contents_
+ value
;
5217 p
= write_ent(p
, i
);
5219 p
= write_tail(p
, i
);
5220 section_size_type cur_size
= p
- this->contents_
;
5221 this->set_current_data_size(cur_size
);
5223 symtab
->define_in_output_data(sym
, NULL
, Symbol_table::PREDEFINED
,
5224 this, value
, cur_size
- value
,
5225 elfcpp::STT_FUNC
, elfcpp::STB_GLOBAL
,
5226 elfcpp::STV_HIDDEN
, 0, false, false);
5231 // Write out save/restore.
5233 template<int size
, bool big_endian
>
5235 Output_data_save_res
<size
, big_endian
>::do_write(Output_file
* of
)
5237 const section_size_type off
= this->offset();
5238 const section_size_type oview_size
=
5239 convert_to_section_size_type(this->data_size());
5240 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
5241 memcpy(oview
, this->contents_
, oview_size
);
5242 of
->write_output_view(off
, oview_size
, oview
);
5246 // Create the glink section.
5248 template<int size
, bool big_endian
>
5250 Target_powerpc
<size
, big_endian
>::make_glink_section(Layout
* layout
)
5252 if (this->glink_
== NULL
)
5254 this->glink_
= new Output_data_glink
<size
, big_endian
>(this);
5255 this->glink_
->add_eh_frame(layout
);
5256 layout
->add_output_section_data(".text", elfcpp::SHT_PROGBITS
,
5257 elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
,
5258 this->glink_
, ORDER_TEXT
, false);
5262 // Create a PLT entry for a global symbol.
5264 template<int size
, bool big_endian
>
5266 Target_powerpc
<size
, big_endian
>::make_plt_entry(Symbol_table
* symtab
,
5270 if (gsym
->type() == elfcpp::STT_GNU_IFUNC
5271 && gsym
->can_use_relative_reloc(false))
5273 if (this->iplt_
== NULL
)
5274 this->make_iplt_section(symtab
, layout
);
5275 this->iplt_
->add_ifunc_entry(gsym
);
5279 if (this->plt_
== NULL
)
5280 this->make_plt_section(symtab
, layout
);
5281 this->plt_
->add_entry(gsym
);
5285 // Make a PLT entry for a local STT_GNU_IFUNC symbol.
5287 template<int size
, bool big_endian
>
5289 Target_powerpc
<size
, big_endian
>::make_local_ifunc_plt_entry(
5290 Symbol_table
* symtab
,
5292 Sized_relobj_file
<size
, big_endian
>* relobj
,
5295 if (this->iplt_
== NULL
)
5296 this->make_iplt_section(symtab
, layout
);
5297 this->iplt_
->add_local_ifunc_entry(relobj
, r_sym
);
5300 // Return the number of entries in the PLT.
5302 template<int size
, bool big_endian
>
5304 Target_powerpc
<size
, big_endian
>::plt_entry_count() const
5306 if (this->plt_
== NULL
)
5308 return this->plt_
->entry_count();
5311 // Create a GOT entry for local dynamic __tls_get_addr calls.
5313 template<int size
, bool big_endian
>
5315 Target_powerpc
<size
, big_endian
>::tlsld_got_offset(
5316 Symbol_table
* symtab
,
5318 Sized_relobj_file
<size
, big_endian
>* object
)
5320 if (this->tlsld_got_offset_
== -1U)
5322 gold_assert(symtab
!= NULL
&& layout
!= NULL
&& object
!= NULL
);
5323 Reloc_section
* rela_dyn
= this->rela_dyn_section(layout
);
5324 Output_data_got_powerpc
<size
, big_endian
>* got
5325 = this->got_section(symtab
, layout
);
5326 unsigned int got_offset
= got
->add_constant_pair(0, 0);
5327 rela_dyn
->add_local(object
, 0, elfcpp::R_POWERPC_DTPMOD
, got
,
5329 this->tlsld_got_offset_
= got_offset
;
5331 return this->tlsld_got_offset_
;
5334 // Get the Reference_flags for a particular relocation.
5336 template<int size
, bool big_endian
>
5338 Target_powerpc
<size
, big_endian
>::Scan::get_reference_flags(
5339 unsigned int r_type
,
5340 const Target_powerpc
* target
)
5346 case elfcpp::R_POWERPC_NONE
:
5347 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
5348 case elfcpp::R_POWERPC_GNU_VTENTRY
:
5349 case elfcpp::R_PPC64_TOC
:
5350 // No symbol reference.
5353 case elfcpp::R_PPC64_ADDR64
:
5354 case elfcpp::R_PPC64_UADDR64
:
5355 case elfcpp::R_POWERPC_ADDR32
:
5356 case elfcpp::R_POWERPC_UADDR32
:
5357 case elfcpp::R_POWERPC_ADDR16
:
5358 case elfcpp::R_POWERPC_UADDR16
:
5359 case elfcpp::R_POWERPC_ADDR16_LO
:
5360 case elfcpp::R_POWERPC_ADDR16_HI
:
5361 case elfcpp::R_POWERPC_ADDR16_HA
:
5362 ref
= Symbol::ABSOLUTE_REF
;
5365 case elfcpp::R_POWERPC_ADDR24
:
5366 case elfcpp::R_POWERPC_ADDR14
:
5367 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
5368 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
5369 ref
= Symbol::FUNCTION_CALL
| Symbol::ABSOLUTE_REF
;
5372 case elfcpp::R_PPC64_REL64
:
5373 case elfcpp::R_POWERPC_REL32
:
5374 case elfcpp::R_PPC_LOCAL24PC
:
5375 case elfcpp::R_POWERPC_REL16
:
5376 case elfcpp::R_POWERPC_REL16_LO
:
5377 case elfcpp::R_POWERPC_REL16_HI
:
5378 case elfcpp::R_POWERPC_REL16_HA
:
5379 ref
= Symbol::RELATIVE_REF
;
5382 case elfcpp::R_POWERPC_REL24
:
5383 case elfcpp::R_PPC_PLTREL24
:
5384 case elfcpp::R_POWERPC_REL14
:
5385 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
5386 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
5387 ref
= Symbol::FUNCTION_CALL
| Symbol::RELATIVE_REF
;
5390 case elfcpp::R_POWERPC_GOT16
:
5391 case elfcpp::R_POWERPC_GOT16_LO
:
5392 case elfcpp::R_POWERPC_GOT16_HI
:
5393 case elfcpp::R_POWERPC_GOT16_HA
:
5394 case elfcpp::R_PPC64_GOT16_DS
:
5395 case elfcpp::R_PPC64_GOT16_LO_DS
:
5396 case elfcpp::R_PPC64_TOC16
:
5397 case elfcpp::R_PPC64_TOC16_LO
:
5398 case elfcpp::R_PPC64_TOC16_HI
:
5399 case elfcpp::R_PPC64_TOC16_HA
:
5400 case elfcpp::R_PPC64_TOC16_DS
:
5401 case elfcpp::R_PPC64_TOC16_LO_DS
:
5402 ref
= Symbol::RELATIVE_REF
;
5405 case elfcpp::R_POWERPC_GOT_TPREL16
:
5406 case elfcpp::R_POWERPC_TLS
:
5407 ref
= Symbol::TLS_REF
;
5410 case elfcpp::R_POWERPC_COPY
:
5411 case elfcpp::R_POWERPC_GLOB_DAT
:
5412 case elfcpp::R_POWERPC_JMP_SLOT
:
5413 case elfcpp::R_POWERPC_RELATIVE
:
5414 case elfcpp::R_POWERPC_DTPMOD
:
5416 // Not expected. We will give an error later.
5420 if (size
== 64 && target
->abiversion() < 2)
5421 ref
|= Symbol::FUNC_DESC_ABI
;
5425 // Report an unsupported relocation against a local symbol.
5427 template<int size
, bool big_endian
>
5429 Target_powerpc
<size
, big_endian
>::Scan::unsupported_reloc_local(
5430 Sized_relobj_file
<size
, big_endian
>* object
,
5431 unsigned int r_type
)
5433 gold_error(_("%s: unsupported reloc %u against local symbol"),
5434 object
->name().c_str(), r_type
);
5437 // We are about to emit a dynamic relocation of type R_TYPE. If the
5438 // dynamic linker does not support it, issue an error.
5440 template<int size
, bool big_endian
>
5442 Target_powerpc
<size
, big_endian
>::Scan::check_non_pic(Relobj
* object
,
5443 unsigned int r_type
)
5445 gold_assert(r_type
!= elfcpp::R_POWERPC_NONE
);
5447 // These are the relocation types supported by glibc for both 32-bit
5448 // and 64-bit powerpc.
5451 case elfcpp::R_POWERPC_NONE
:
5452 case elfcpp::R_POWERPC_RELATIVE
:
5453 case elfcpp::R_POWERPC_GLOB_DAT
:
5454 case elfcpp::R_POWERPC_DTPMOD
:
5455 case elfcpp::R_POWERPC_DTPREL
:
5456 case elfcpp::R_POWERPC_TPREL
:
5457 case elfcpp::R_POWERPC_JMP_SLOT
:
5458 case elfcpp::R_POWERPC_COPY
:
5459 case elfcpp::R_POWERPC_IRELATIVE
:
5460 case elfcpp::R_POWERPC_ADDR32
:
5461 case elfcpp::R_POWERPC_UADDR32
:
5462 case elfcpp::R_POWERPC_ADDR24
:
5463 case elfcpp::R_POWERPC_ADDR16
:
5464 case elfcpp::R_POWERPC_UADDR16
:
5465 case elfcpp::R_POWERPC_ADDR16_LO
:
5466 case elfcpp::R_POWERPC_ADDR16_HI
:
5467 case elfcpp::R_POWERPC_ADDR16_HA
:
5468 case elfcpp::R_POWERPC_ADDR14
:
5469 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
5470 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
5471 case elfcpp::R_POWERPC_REL32
:
5472 case elfcpp::R_POWERPC_REL24
:
5473 case elfcpp::R_POWERPC_TPREL16
:
5474 case elfcpp::R_POWERPC_TPREL16_LO
:
5475 case elfcpp::R_POWERPC_TPREL16_HI
:
5476 case elfcpp::R_POWERPC_TPREL16_HA
:
5487 // These are the relocation types supported only on 64-bit.
5488 case elfcpp::R_PPC64_ADDR64
:
5489 case elfcpp::R_PPC64_UADDR64
:
5490 case elfcpp::R_PPC64_JMP_IREL
:
5491 case elfcpp::R_PPC64_ADDR16_DS
:
5492 case elfcpp::R_PPC64_ADDR16_LO_DS
:
5493 case elfcpp::R_PPC64_ADDR16_HIGH
:
5494 case elfcpp::R_PPC64_ADDR16_HIGHA
:
5495 case elfcpp::R_PPC64_ADDR16_HIGHER
:
5496 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
5497 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
5498 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
5499 case elfcpp::R_PPC64_REL64
:
5500 case elfcpp::R_POWERPC_ADDR30
:
5501 case elfcpp::R_PPC64_TPREL16_DS
:
5502 case elfcpp::R_PPC64_TPREL16_LO_DS
:
5503 case elfcpp::R_PPC64_TPREL16_HIGH
:
5504 case elfcpp::R_PPC64_TPREL16_HIGHA
:
5505 case elfcpp::R_PPC64_TPREL16_HIGHER
:
5506 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
5507 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
5508 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
5519 // These are the relocation types supported only on 32-bit.
5520 // ??? glibc ld.so doesn't need to support these.
5521 case elfcpp::R_POWERPC_DTPREL16
:
5522 case elfcpp::R_POWERPC_DTPREL16_LO
:
5523 case elfcpp::R_POWERPC_DTPREL16_HI
:
5524 case elfcpp::R_POWERPC_DTPREL16_HA
:
5532 // This prevents us from issuing more than one error per reloc
5533 // section. But we can still wind up issuing more than one
5534 // error per object file.
5535 if (this->issued_non_pic_error_
)
5537 gold_assert(parameters
->options().output_is_position_independent());
5538 object
->error(_("requires unsupported dynamic reloc; "
5539 "recompile with -fPIC"));
5540 this->issued_non_pic_error_
= true;
5544 // Return whether we need to make a PLT entry for a relocation of the
5545 // given type against a STT_GNU_IFUNC symbol.
5547 template<int size
, bool big_endian
>
5549 Target_powerpc
<size
, big_endian
>::Scan::reloc_needs_plt_for_ifunc(
5550 Target_powerpc
<size
, big_endian
>* target
,
5551 Sized_relobj_file
<size
, big_endian
>* object
,
5552 unsigned int r_type
,
5555 // In non-pic code any reference will resolve to the plt call stub
5556 // for the ifunc symbol.
5557 if ((size
== 32 || target
->abiversion() >= 2)
5558 && !parameters
->options().output_is_position_independent())
5563 // Word size refs from data sections are OK, but don't need a PLT entry.
5564 case elfcpp::R_POWERPC_ADDR32
:
5565 case elfcpp::R_POWERPC_UADDR32
:
5570 case elfcpp::R_PPC64_ADDR64
:
5571 case elfcpp::R_PPC64_UADDR64
:
5576 // GOT refs are good, but also don't need a PLT entry.
5577 case elfcpp::R_POWERPC_GOT16
:
5578 case elfcpp::R_POWERPC_GOT16_LO
:
5579 case elfcpp::R_POWERPC_GOT16_HI
:
5580 case elfcpp::R_POWERPC_GOT16_HA
:
5581 case elfcpp::R_PPC64_GOT16_DS
:
5582 case elfcpp::R_PPC64_GOT16_LO_DS
:
5585 // Function calls are good, and these do need a PLT entry.
5586 case elfcpp::R_POWERPC_ADDR24
:
5587 case elfcpp::R_POWERPC_ADDR14
:
5588 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
5589 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
5590 case elfcpp::R_POWERPC_REL24
:
5591 case elfcpp::R_PPC_PLTREL24
:
5592 case elfcpp::R_POWERPC_REL14
:
5593 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
5594 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
5601 // Anything else is a problem.
5602 // If we are building a static executable, the libc startup function
5603 // responsible for applying indirect function relocations is going
5604 // to complain about the reloc type.
5605 // If we are building a dynamic executable, we will have a text
5606 // relocation. The dynamic loader will set the text segment
5607 // writable and non-executable to apply text relocations. So we'll
5608 // segfault when trying to run the indirection function to resolve
5611 gold_error(_("%s: unsupported reloc %u for IFUNC symbol"),
5612 object
->name().c_str(), r_type
);
5616 // Scan a relocation for a local symbol.
5618 template<int size
, bool big_endian
>
5620 Target_powerpc
<size
, big_endian
>::Scan::local(
5621 Symbol_table
* symtab
,
5623 Target_powerpc
<size
, big_endian
>* target
,
5624 Sized_relobj_file
<size
, big_endian
>* object
,
5625 unsigned int data_shndx
,
5626 Output_section
* output_section
,
5627 const elfcpp::Rela
<size
, big_endian
>& reloc
,
5628 unsigned int r_type
,
5629 const elfcpp::Sym
<size
, big_endian
>& lsym
,
5632 this->maybe_skip_tls_get_addr_call(r_type
, NULL
);
5634 if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
5635 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
5637 this->expect_tls_get_addr_call();
5638 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(true);
5639 if (tls_type
!= tls::TLSOPT_NONE
)
5640 this->skip_next_tls_get_addr_call();
5642 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
5643 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
5645 this->expect_tls_get_addr_call();
5646 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
5647 if (tls_type
!= tls::TLSOPT_NONE
)
5648 this->skip_next_tls_get_addr_call();
5651 Powerpc_relobj
<size
, big_endian
>* ppc_object
5652 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
5657 && data_shndx
== ppc_object
->opd_shndx()
5658 && r_type
== elfcpp::R_PPC64_ADDR64
)
5659 ppc_object
->set_opd_discard(reloc
.get_r_offset());
5663 // A local STT_GNU_IFUNC symbol may require a PLT entry.
5664 bool is_ifunc
= lsym
.get_st_type() == elfcpp::STT_GNU_IFUNC
;
5665 if (is_ifunc
&& this->reloc_needs_plt_for_ifunc(target
, object
, r_type
, true))
5667 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5668 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
5669 r_type
, r_sym
, reloc
.get_r_addend());
5670 target
->make_local_ifunc_plt_entry(symtab
, layout
, object
, r_sym
);
5675 case elfcpp::R_POWERPC_NONE
:
5676 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
5677 case elfcpp::R_POWERPC_GNU_VTENTRY
:
5678 case elfcpp::R_PPC64_TOCSAVE
:
5679 case elfcpp::R_POWERPC_TLS
:
5680 case elfcpp::R_PPC64_ENTRY
:
5683 case elfcpp::R_PPC64_TOC
:
5685 Output_data_got_powerpc
<size
, big_endian
>* got
5686 = target
->got_section(symtab
, layout
);
5687 if (parameters
->options().output_is_position_independent())
5689 Address off
= reloc
.get_r_offset();
5691 && target
->abiversion() < 2
5692 && data_shndx
== ppc_object
->opd_shndx()
5693 && ppc_object
->get_opd_discard(off
- 8))
5696 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5697 Powerpc_relobj
<size
, big_endian
>* symobj
= ppc_object
;
5698 rela_dyn
->add_output_section_relative(got
->output_section(),
5699 elfcpp::R_POWERPC_RELATIVE
,
5701 object
, data_shndx
, off
,
5702 symobj
->toc_base_offset());
5707 case elfcpp::R_PPC64_ADDR64
:
5708 case elfcpp::R_PPC64_UADDR64
:
5709 case elfcpp::R_POWERPC_ADDR32
:
5710 case elfcpp::R_POWERPC_UADDR32
:
5711 case elfcpp::R_POWERPC_ADDR24
:
5712 case elfcpp::R_POWERPC_ADDR16
:
5713 case elfcpp::R_POWERPC_ADDR16_LO
:
5714 case elfcpp::R_POWERPC_ADDR16_HI
:
5715 case elfcpp::R_POWERPC_ADDR16_HA
:
5716 case elfcpp::R_POWERPC_UADDR16
:
5717 case elfcpp::R_PPC64_ADDR16_HIGH
:
5718 case elfcpp::R_PPC64_ADDR16_HIGHA
:
5719 case elfcpp::R_PPC64_ADDR16_HIGHER
:
5720 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
5721 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
5722 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
5723 case elfcpp::R_PPC64_ADDR16_DS
:
5724 case elfcpp::R_PPC64_ADDR16_LO_DS
:
5725 case elfcpp::R_POWERPC_ADDR14
:
5726 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
5727 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
5728 // If building a shared library (or a position-independent
5729 // executable), we need to create a dynamic relocation for
5731 if (parameters
->options().output_is_position_independent()
5732 || (size
== 64 && is_ifunc
&& target
->abiversion() < 2))
5734 Reloc_section
* rela_dyn
= target
->rela_dyn_section(symtab
, layout
,
5736 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5737 if ((size
== 32 && r_type
== elfcpp::R_POWERPC_ADDR32
)
5738 || (size
== 64 && r_type
== elfcpp::R_PPC64_ADDR64
))
5740 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
5741 : elfcpp::R_POWERPC_RELATIVE
);
5742 rela_dyn
->add_local_relative(object
, r_sym
, dynrel
,
5743 output_section
, data_shndx
,
5744 reloc
.get_r_offset(),
5745 reloc
.get_r_addend(), false);
5747 else if (lsym
.get_st_type() != elfcpp::STT_SECTION
)
5749 check_non_pic(object
, r_type
);
5750 rela_dyn
->add_local(object
, r_sym
, r_type
, output_section
,
5751 data_shndx
, reloc
.get_r_offset(),
5752 reloc
.get_r_addend());
5756 gold_assert(lsym
.get_st_value() == 0);
5757 unsigned int shndx
= lsym
.get_st_shndx();
5759 shndx
= object
->adjust_sym_shndx(r_sym
, shndx
,
5762 object
->error(_("section symbol %u has bad shndx %u"),
5765 rela_dyn
->add_local_section(object
, shndx
, r_type
,
5766 output_section
, data_shndx
,
5767 reloc
.get_r_offset());
5772 case elfcpp::R_POWERPC_REL24
:
5773 case elfcpp::R_PPC_PLTREL24
:
5774 case elfcpp::R_PPC_LOCAL24PC
:
5775 case elfcpp::R_POWERPC_REL14
:
5776 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
5777 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
5779 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
5780 r_type
, elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
5781 reloc
.get_r_addend());
5784 case elfcpp::R_PPC64_REL64
:
5785 case elfcpp::R_POWERPC_REL32
:
5786 case elfcpp::R_POWERPC_REL16
:
5787 case elfcpp::R_POWERPC_REL16_LO
:
5788 case elfcpp::R_POWERPC_REL16_HI
:
5789 case elfcpp::R_POWERPC_REL16_HA
:
5790 case elfcpp::R_POWERPC_REL16DX_HA
:
5791 case elfcpp::R_POWERPC_SECTOFF
:
5792 case elfcpp::R_POWERPC_SECTOFF_LO
:
5793 case elfcpp::R_POWERPC_SECTOFF_HI
:
5794 case elfcpp::R_POWERPC_SECTOFF_HA
:
5795 case elfcpp::R_PPC64_SECTOFF_DS
:
5796 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
5797 case elfcpp::R_POWERPC_TPREL16
:
5798 case elfcpp::R_POWERPC_TPREL16_LO
:
5799 case elfcpp::R_POWERPC_TPREL16_HI
:
5800 case elfcpp::R_POWERPC_TPREL16_HA
:
5801 case elfcpp::R_PPC64_TPREL16_DS
:
5802 case elfcpp::R_PPC64_TPREL16_LO_DS
:
5803 case elfcpp::R_PPC64_TPREL16_HIGH
:
5804 case elfcpp::R_PPC64_TPREL16_HIGHA
:
5805 case elfcpp::R_PPC64_TPREL16_HIGHER
:
5806 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
5807 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
5808 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
5809 case elfcpp::R_POWERPC_DTPREL16
:
5810 case elfcpp::R_POWERPC_DTPREL16_LO
:
5811 case elfcpp::R_POWERPC_DTPREL16_HI
:
5812 case elfcpp::R_POWERPC_DTPREL16_HA
:
5813 case elfcpp::R_PPC64_DTPREL16_DS
:
5814 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
5815 case elfcpp::R_PPC64_DTPREL16_HIGH
:
5816 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
5817 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
5818 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
5819 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
5820 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
5821 case elfcpp::R_PPC64_TLSGD
:
5822 case elfcpp::R_PPC64_TLSLD
:
5823 case elfcpp::R_PPC64_ADDR64_LOCAL
:
5826 case elfcpp::R_POWERPC_GOT16
:
5827 case elfcpp::R_POWERPC_GOT16_LO
:
5828 case elfcpp::R_POWERPC_GOT16_HI
:
5829 case elfcpp::R_POWERPC_GOT16_HA
:
5830 case elfcpp::R_PPC64_GOT16_DS
:
5831 case elfcpp::R_PPC64_GOT16_LO_DS
:
5833 // The symbol requires a GOT entry.
5834 Output_data_got_powerpc
<size
, big_endian
>* got
5835 = target
->got_section(symtab
, layout
);
5836 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5838 if (!parameters
->options().output_is_position_independent())
5841 && (size
== 32 || target
->abiversion() >= 2))
5842 got
->add_local_plt(object
, r_sym
, GOT_TYPE_STANDARD
);
5844 got
->add_local(object
, r_sym
, GOT_TYPE_STANDARD
);
5846 else if (!object
->local_has_got_offset(r_sym
, GOT_TYPE_STANDARD
))
5848 // If we are generating a shared object or a pie, this
5849 // symbol's GOT entry will be set by a dynamic relocation.
5851 off
= got
->add_constant(0);
5852 object
->set_local_got_offset(r_sym
, GOT_TYPE_STANDARD
, off
);
5854 Reloc_section
* rela_dyn
= target
->rela_dyn_section(symtab
, layout
,
5856 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
5857 : elfcpp::R_POWERPC_RELATIVE
);
5858 rela_dyn
->add_local_relative(object
, r_sym
, dynrel
,
5859 got
, off
, 0, false);
5864 case elfcpp::R_PPC64_TOC16
:
5865 case elfcpp::R_PPC64_TOC16_LO
:
5866 case elfcpp::R_PPC64_TOC16_HI
:
5867 case elfcpp::R_PPC64_TOC16_HA
:
5868 case elfcpp::R_PPC64_TOC16_DS
:
5869 case elfcpp::R_PPC64_TOC16_LO_DS
:
5870 // We need a GOT section.
5871 target
->got_section(symtab
, layout
);
5874 case elfcpp::R_POWERPC_GOT_TLSGD16
:
5875 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
5876 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
5877 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
5879 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(true);
5880 if (tls_type
== tls::TLSOPT_NONE
)
5882 Output_data_got_powerpc
<size
, big_endian
>* got
5883 = target
->got_section(symtab
, layout
);
5884 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5885 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5886 got
->add_local_tls_pair(object
, r_sym
, GOT_TYPE_TLSGD
,
5887 rela_dyn
, elfcpp::R_POWERPC_DTPMOD
);
5889 else if (tls_type
== tls::TLSOPT_TO_LE
)
5891 // no GOT relocs needed for Local Exec.
5898 case elfcpp::R_POWERPC_GOT_TLSLD16
:
5899 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
5900 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
5901 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
5903 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
5904 if (tls_type
== tls::TLSOPT_NONE
)
5905 target
->tlsld_got_offset(symtab
, layout
, object
);
5906 else if (tls_type
== tls::TLSOPT_TO_LE
)
5908 // no GOT relocs needed for Local Exec.
5909 if (parameters
->options().emit_relocs())
5911 Output_section
* os
= layout
->tls_segment()->first_section();
5912 gold_assert(os
!= NULL
);
5913 os
->set_needs_symtab_index();
5921 case elfcpp::R_POWERPC_GOT_DTPREL16
:
5922 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
5923 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
5924 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
5926 Output_data_got_powerpc
<size
, big_endian
>* got
5927 = target
->got_section(symtab
, layout
);
5928 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5929 got
->add_local_tls(object
, r_sym
, GOT_TYPE_DTPREL
);
5933 case elfcpp::R_POWERPC_GOT_TPREL16
:
5934 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
5935 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
5936 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
5938 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(true);
5939 if (tls_type
== tls::TLSOPT_NONE
)
5941 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5942 if (!object
->local_has_got_offset(r_sym
, GOT_TYPE_TPREL
))
5944 Output_data_got_powerpc
<size
, big_endian
>* got
5945 = target
->got_section(symtab
, layout
);
5946 unsigned int off
= got
->add_constant(0);
5947 object
->set_local_got_offset(r_sym
, GOT_TYPE_TPREL
, off
);
5949 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5950 rela_dyn
->add_symbolless_local_addend(object
, r_sym
,
5951 elfcpp::R_POWERPC_TPREL
,
5955 else if (tls_type
== tls::TLSOPT_TO_LE
)
5957 // no GOT relocs needed for Local Exec.
5965 unsupported_reloc_local(object
, r_type
);
5971 case elfcpp::R_POWERPC_GOT_TLSLD16
:
5972 case elfcpp::R_POWERPC_GOT_TLSGD16
:
5973 case elfcpp::R_POWERPC_GOT_TPREL16
:
5974 case elfcpp::R_POWERPC_GOT_DTPREL16
:
5975 case elfcpp::R_POWERPC_GOT16
:
5976 case elfcpp::R_PPC64_GOT16_DS
:
5977 case elfcpp::R_PPC64_TOC16
:
5978 case elfcpp::R_PPC64_TOC16_DS
:
5979 ppc_object
->set_has_small_toc_reloc();
5985 // Report an unsupported relocation against a global symbol.
5987 template<int size
, bool big_endian
>
5989 Target_powerpc
<size
, big_endian
>::Scan::unsupported_reloc_global(
5990 Sized_relobj_file
<size
, big_endian
>* object
,
5991 unsigned int r_type
,
5994 gold_error(_("%s: unsupported reloc %u against global symbol %s"),
5995 object
->name().c_str(), r_type
, gsym
->demangled_name().c_str());
5998 // Scan a relocation for a global symbol.
6000 template<int size
, bool big_endian
>
6002 Target_powerpc
<size
, big_endian
>::Scan::global(
6003 Symbol_table
* symtab
,
6005 Target_powerpc
<size
, big_endian
>* target
,
6006 Sized_relobj_file
<size
, big_endian
>* object
,
6007 unsigned int data_shndx
,
6008 Output_section
* output_section
,
6009 const elfcpp::Rela
<size
, big_endian
>& reloc
,
6010 unsigned int r_type
,
6013 if (this->maybe_skip_tls_get_addr_call(r_type
, gsym
) == Track_tls::SKIP
)
6016 if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
6017 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
6019 this->expect_tls_get_addr_call();
6020 const bool final
= gsym
->final_value_is_known();
6021 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
6022 if (tls_type
!= tls::TLSOPT_NONE
)
6023 this->skip_next_tls_get_addr_call();
6025 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
6026 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
6028 this->expect_tls_get_addr_call();
6029 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
6030 if (tls_type
!= tls::TLSOPT_NONE
)
6031 this->skip_next_tls_get_addr_call();
6034 Powerpc_relobj
<size
, big_endian
>* ppc_object
6035 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
6037 // A STT_GNU_IFUNC symbol may require a PLT entry.
6038 bool is_ifunc
= gsym
->type() == elfcpp::STT_GNU_IFUNC
;
6039 bool pushed_ifunc
= false;
6040 if (is_ifunc
&& this->reloc_needs_plt_for_ifunc(target
, object
, r_type
, true))
6042 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
6043 r_type
, elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
6044 reloc
.get_r_addend());
6045 target
->make_plt_entry(symtab
, layout
, gsym
);
6046 pushed_ifunc
= true;
6051 case elfcpp::R_POWERPC_NONE
:
6052 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
6053 case elfcpp::R_POWERPC_GNU_VTENTRY
:
6054 case elfcpp::R_PPC_LOCAL24PC
:
6055 case elfcpp::R_POWERPC_TLS
:
6056 case elfcpp::R_PPC64_ENTRY
:
6059 case elfcpp::R_PPC64_TOC
:
6061 Output_data_got_powerpc
<size
, big_endian
>* got
6062 = target
->got_section(symtab
, layout
);
6063 if (parameters
->options().output_is_position_independent())
6065 Address off
= reloc
.get_r_offset();
6067 && data_shndx
== ppc_object
->opd_shndx()
6068 && ppc_object
->get_opd_discard(off
- 8))
6071 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
6072 Powerpc_relobj
<size
, big_endian
>* symobj
= ppc_object
;
6073 if (data_shndx
!= ppc_object
->opd_shndx())
6074 symobj
= static_cast
6075 <Powerpc_relobj
<size
, big_endian
>*>(gsym
->object());
6076 rela_dyn
->add_output_section_relative(got
->output_section(),
6077 elfcpp::R_POWERPC_RELATIVE
,
6079 object
, data_shndx
, off
,
6080 symobj
->toc_base_offset());
6085 case elfcpp::R_PPC64_ADDR64
:
6087 && target
->abiversion() < 2
6088 && data_shndx
== ppc_object
->opd_shndx()
6089 && (gsym
->is_defined_in_discarded_section()
6090 || gsym
->object() != object
))
6092 ppc_object
->set_opd_discard(reloc
.get_r_offset());
6096 case elfcpp::R_PPC64_UADDR64
:
6097 case elfcpp::R_POWERPC_ADDR32
:
6098 case elfcpp::R_POWERPC_UADDR32
:
6099 case elfcpp::R_POWERPC_ADDR24
:
6100 case elfcpp::R_POWERPC_ADDR16
:
6101 case elfcpp::R_POWERPC_ADDR16_LO
:
6102 case elfcpp::R_POWERPC_ADDR16_HI
:
6103 case elfcpp::R_POWERPC_ADDR16_HA
:
6104 case elfcpp::R_POWERPC_UADDR16
:
6105 case elfcpp::R_PPC64_ADDR16_HIGH
:
6106 case elfcpp::R_PPC64_ADDR16_HIGHA
:
6107 case elfcpp::R_PPC64_ADDR16_HIGHER
:
6108 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
6109 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
6110 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
6111 case elfcpp::R_PPC64_ADDR16_DS
:
6112 case elfcpp::R_PPC64_ADDR16_LO_DS
:
6113 case elfcpp::R_POWERPC_ADDR14
:
6114 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
6115 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
6117 // Make a PLT entry if necessary.
6118 if (gsym
->needs_plt_entry())
6120 // Since this is not a PC-relative relocation, we may be
6121 // taking the address of a function. In that case we need to
6122 // set the entry in the dynamic symbol table to the address of
6123 // the PLT call stub.
6124 bool need_ifunc_plt
= false;
6125 if ((size
== 32 || target
->abiversion() >= 2)
6126 && gsym
->is_from_dynobj()
6127 && !parameters
->options().output_is_position_independent())
6129 gsym
->set_needs_dynsym_value();
6130 need_ifunc_plt
= true;
6132 if (!is_ifunc
|| (!pushed_ifunc
&& need_ifunc_plt
))
6134 target
->push_branch(ppc_object
, data_shndx
,
6135 reloc
.get_r_offset(), r_type
,
6136 elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
6137 reloc
.get_r_addend());
6138 target
->make_plt_entry(symtab
, layout
, gsym
);
6141 // Make a dynamic relocation if necessary.
6142 if (gsym
->needs_dynamic_reloc(Scan::get_reference_flags(r_type
, target
))
6143 || (size
== 64 && is_ifunc
&& target
->abiversion() < 2))
6145 if (!parameters
->options().output_is_position_independent()
6146 && gsym
->may_need_copy_reloc())
6148 target
->copy_reloc(symtab
, layout
, object
,
6149 data_shndx
, output_section
, gsym
, reloc
);
6151 else if ((((size
== 32
6152 && r_type
== elfcpp::R_POWERPC_ADDR32
)
6154 && r_type
== elfcpp::R_PPC64_ADDR64
6155 && target
->abiversion() >= 2))
6156 && gsym
->can_use_relative_reloc(false)
6157 && !(gsym
->visibility() == elfcpp::STV_PROTECTED
6158 && parameters
->options().shared()))
6160 && r_type
== elfcpp::R_PPC64_ADDR64
6161 && target
->abiversion() < 2
6162 && (gsym
->can_use_relative_reloc(false)
6163 || data_shndx
== ppc_object
->opd_shndx())))
6165 Reloc_section
* rela_dyn
6166 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
6167 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
6168 : elfcpp::R_POWERPC_RELATIVE
);
6169 rela_dyn
->add_symbolless_global_addend(
6170 gsym
, dynrel
, output_section
, object
, data_shndx
,
6171 reloc
.get_r_offset(), reloc
.get_r_addend());
6175 Reloc_section
* rela_dyn
6176 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
6177 check_non_pic(object
, r_type
);
6178 rela_dyn
->add_global(gsym
, r_type
, output_section
,
6180 reloc
.get_r_offset(),
6181 reloc
.get_r_addend());
6187 case elfcpp::R_PPC_PLTREL24
:
6188 case elfcpp::R_POWERPC_REL24
:
6191 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
6193 elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
6194 reloc
.get_r_addend());
6195 if (gsym
->needs_plt_entry()
6196 || (!gsym
->final_value_is_known()
6197 && (gsym
->is_undefined()
6198 || gsym
->is_from_dynobj()
6199 || gsym
->is_preemptible())))
6200 target
->make_plt_entry(symtab
, layout
, gsym
);
6204 case elfcpp::R_PPC64_REL64
:
6205 case elfcpp::R_POWERPC_REL32
:
6206 // Make a dynamic relocation if necessary.
6207 if (gsym
->needs_dynamic_reloc(Scan::get_reference_flags(r_type
, target
)))
6209 if (!parameters
->options().output_is_position_independent()
6210 && gsym
->may_need_copy_reloc())
6212 target
->copy_reloc(symtab
, layout
, object
,
6213 data_shndx
, output_section
, gsym
,
6218 Reloc_section
* rela_dyn
6219 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
6220 check_non_pic(object
, r_type
);
6221 rela_dyn
->add_global(gsym
, r_type
, output_section
, object
,
6222 data_shndx
, reloc
.get_r_offset(),
6223 reloc
.get_r_addend());
6228 case elfcpp::R_POWERPC_REL14
:
6229 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
6230 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
6232 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
6233 r_type
, elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
6234 reloc
.get_r_addend());
6237 case elfcpp::R_POWERPC_REL16
:
6238 case elfcpp::R_POWERPC_REL16_LO
:
6239 case elfcpp::R_POWERPC_REL16_HI
:
6240 case elfcpp::R_POWERPC_REL16_HA
:
6241 case elfcpp::R_POWERPC_REL16DX_HA
:
6242 case elfcpp::R_POWERPC_SECTOFF
:
6243 case elfcpp::R_POWERPC_SECTOFF_LO
:
6244 case elfcpp::R_POWERPC_SECTOFF_HI
:
6245 case elfcpp::R_POWERPC_SECTOFF_HA
:
6246 case elfcpp::R_PPC64_SECTOFF_DS
:
6247 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
6248 case elfcpp::R_POWERPC_TPREL16
:
6249 case elfcpp::R_POWERPC_TPREL16_LO
:
6250 case elfcpp::R_POWERPC_TPREL16_HI
:
6251 case elfcpp::R_POWERPC_TPREL16_HA
:
6252 case elfcpp::R_PPC64_TPREL16_DS
:
6253 case elfcpp::R_PPC64_TPREL16_LO_DS
:
6254 case elfcpp::R_PPC64_TPREL16_HIGH
:
6255 case elfcpp::R_PPC64_TPREL16_HIGHA
:
6256 case elfcpp::R_PPC64_TPREL16_HIGHER
:
6257 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
6258 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
6259 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
6260 case elfcpp::R_POWERPC_DTPREL16
:
6261 case elfcpp::R_POWERPC_DTPREL16_LO
:
6262 case elfcpp::R_POWERPC_DTPREL16_HI
:
6263 case elfcpp::R_POWERPC_DTPREL16_HA
:
6264 case elfcpp::R_PPC64_DTPREL16_DS
:
6265 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
6266 case elfcpp::R_PPC64_DTPREL16_HIGH
:
6267 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
6268 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
6269 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
6270 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
6271 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
6272 case elfcpp::R_PPC64_TLSGD
:
6273 case elfcpp::R_PPC64_TLSLD
:
6274 case elfcpp::R_PPC64_ADDR64_LOCAL
:
6277 case elfcpp::R_POWERPC_GOT16
:
6278 case elfcpp::R_POWERPC_GOT16_LO
:
6279 case elfcpp::R_POWERPC_GOT16_HI
:
6280 case elfcpp::R_POWERPC_GOT16_HA
:
6281 case elfcpp::R_PPC64_GOT16_DS
:
6282 case elfcpp::R_PPC64_GOT16_LO_DS
:
6284 // The symbol requires a GOT entry.
6285 Output_data_got_powerpc
<size
, big_endian
>* got
;
6287 got
= target
->got_section(symtab
, layout
);
6288 if (gsym
->final_value_is_known())
6291 && (size
== 32 || target
->abiversion() >= 2))
6292 got
->add_global_plt(gsym
, GOT_TYPE_STANDARD
);
6294 got
->add_global(gsym
, GOT_TYPE_STANDARD
);
6296 else if (!gsym
->has_got_offset(GOT_TYPE_STANDARD
))
6298 // If we are generating a shared object or a pie, this
6299 // symbol's GOT entry will be set by a dynamic relocation.
6300 unsigned int off
= got
->add_constant(0);
6301 gsym
->set_got_offset(GOT_TYPE_STANDARD
, off
);
6303 Reloc_section
* rela_dyn
6304 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
6306 if (gsym
->can_use_relative_reloc(false)
6308 || target
->abiversion() >= 2)
6309 && gsym
->visibility() == elfcpp::STV_PROTECTED
6310 && parameters
->options().shared()))
6312 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
6313 : elfcpp::R_POWERPC_RELATIVE
);
6314 rela_dyn
->add_global_relative(gsym
, dynrel
, got
, off
, 0, false);
6318 unsigned int dynrel
= elfcpp::R_POWERPC_GLOB_DAT
;
6319 rela_dyn
->add_global(gsym
, dynrel
, got
, off
, 0);
6325 case elfcpp::R_PPC64_TOC16
:
6326 case elfcpp::R_PPC64_TOC16_LO
:
6327 case elfcpp::R_PPC64_TOC16_HI
:
6328 case elfcpp::R_PPC64_TOC16_HA
:
6329 case elfcpp::R_PPC64_TOC16_DS
:
6330 case elfcpp::R_PPC64_TOC16_LO_DS
:
6331 // We need a GOT section.
6332 target
->got_section(symtab
, layout
);
6335 case elfcpp::R_POWERPC_GOT_TLSGD16
:
6336 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
6337 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
6338 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
6340 const bool final
= gsym
->final_value_is_known();
6341 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
6342 if (tls_type
== tls::TLSOPT_NONE
)
6344 Output_data_got_powerpc
<size
, big_endian
>* got
6345 = target
->got_section(symtab
, layout
);
6346 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
6347 got
->add_global_pair_with_rel(gsym
, GOT_TYPE_TLSGD
, rela_dyn
,
6348 elfcpp::R_POWERPC_DTPMOD
,
6349 elfcpp::R_POWERPC_DTPREL
);
6351 else if (tls_type
== tls::TLSOPT_TO_IE
)
6353 if (!gsym
->has_got_offset(GOT_TYPE_TPREL
))
6355 Output_data_got_powerpc
<size
, big_endian
>* got
6356 = target
->got_section(symtab
, layout
);
6357 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
6358 if (gsym
->is_undefined()
6359 || gsym
->is_from_dynobj())
6361 got
->add_global_with_rel(gsym
, GOT_TYPE_TPREL
, rela_dyn
,
6362 elfcpp::R_POWERPC_TPREL
);
6366 unsigned int off
= got
->add_constant(0);
6367 gsym
->set_got_offset(GOT_TYPE_TPREL
, off
);
6368 unsigned int dynrel
= elfcpp::R_POWERPC_TPREL
;
6369 rela_dyn
->add_symbolless_global_addend(gsym
, dynrel
,
6374 else if (tls_type
== tls::TLSOPT_TO_LE
)
6376 // no GOT relocs needed for Local Exec.
6383 case elfcpp::R_POWERPC_GOT_TLSLD16
:
6384 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
6385 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
6386 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
6388 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
6389 if (tls_type
== tls::TLSOPT_NONE
)
6390 target
->tlsld_got_offset(symtab
, layout
, object
);
6391 else if (tls_type
== tls::TLSOPT_TO_LE
)
6393 // no GOT relocs needed for Local Exec.
6394 if (parameters
->options().emit_relocs())
6396 Output_section
* os
= layout
->tls_segment()->first_section();
6397 gold_assert(os
!= NULL
);
6398 os
->set_needs_symtab_index();
6406 case elfcpp::R_POWERPC_GOT_DTPREL16
:
6407 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
6408 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
6409 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
6411 Output_data_got_powerpc
<size
, big_endian
>* got
6412 = target
->got_section(symtab
, layout
);
6413 if (!gsym
->final_value_is_known()
6414 && (gsym
->is_from_dynobj()
6415 || gsym
->is_undefined()
6416 || gsym
->is_preemptible()))
6417 got
->add_global_with_rel(gsym
, GOT_TYPE_DTPREL
,
6418 target
->rela_dyn_section(layout
),
6419 elfcpp::R_POWERPC_DTPREL
);
6421 got
->add_global_tls(gsym
, GOT_TYPE_DTPREL
);
6425 case elfcpp::R_POWERPC_GOT_TPREL16
:
6426 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
6427 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
6428 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
6430 const bool final
= gsym
->final_value_is_known();
6431 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
6432 if (tls_type
== tls::TLSOPT_NONE
)
6434 if (!gsym
->has_got_offset(GOT_TYPE_TPREL
))
6436 Output_data_got_powerpc
<size
, big_endian
>* got
6437 = target
->got_section(symtab
, layout
);
6438 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
6439 if (gsym
->is_undefined()
6440 || gsym
->is_from_dynobj())
6442 got
->add_global_with_rel(gsym
, GOT_TYPE_TPREL
, rela_dyn
,
6443 elfcpp::R_POWERPC_TPREL
);
6447 unsigned int off
= got
->add_constant(0);
6448 gsym
->set_got_offset(GOT_TYPE_TPREL
, off
);
6449 unsigned int dynrel
= elfcpp::R_POWERPC_TPREL
;
6450 rela_dyn
->add_symbolless_global_addend(gsym
, dynrel
,
6455 else if (tls_type
== tls::TLSOPT_TO_LE
)
6457 // no GOT relocs needed for Local Exec.
6465 unsupported_reloc_global(object
, r_type
, gsym
);
6471 case elfcpp::R_POWERPC_GOT_TLSLD16
:
6472 case elfcpp::R_POWERPC_GOT_TLSGD16
:
6473 case elfcpp::R_POWERPC_GOT_TPREL16
:
6474 case elfcpp::R_POWERPC_GOT_DTPREL16
:
6475 case elfcpp::R_POWERPC_GOT16
:
6476 case elfcpp::R_PPC64_GOT16_DS
:
6477 case elfcpp::R_PPC64_TOC16
:
6478 case elfcpp::R_PPC64_TOC16_DS
:
6479 ppc_object
->set_has_small_toc_reloc();
6485 // Process relocations for gc.
6487 template<int size
, bool big_endian
>
6489 Target_powerpc
<size
, big_endian
>::gc_process_relocs(
6490 Symbol_table
* symtab
,
6492 Sized_relobj_file
<size
, big_endian
>* object
,
6493 unsigned int data_shndx
,
6495 const unsigned char* prelocs
,
6497 Output_section
* output_section
,
6498 bool needs_special_offset_handling
,
6499 size_t local_symbol_count
,
6500 const unsigned char* plocal_symbols
)
6502 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
6503 typedef gold::Default_classify_reloc
<elfcpp::SHT_RELA
, size
, big_endian
>
6506 Powerpc_relobj
<size
, big_endian
>* ppc_object
6507 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
6509 ppc_object
->set_opd_valid();
6510 if (size
== 64 && data_shndx
== ppc_object
->opd_shndx())
6512 typename Powerpc_relobj
<size
, big_endian
>::Access_from::iterator p
;
6513 for (p
= ppc_object
->access_from_map()->begin();
6514 p
!= ppc_object
->access_from_map()->end();
6517 Address dst_off
= p
->first
;
6518 unsigned int dst_indx
= ppc_object
->get_opd_ent(dst_off
);
6519 typename Powerpc_relobj
<size
, big_endian
>::Section_refs::iterator s
;
6520 for (s
= p
->second
.begin(); s
!= p
->second
.end(); ++s
)
6522 Relobj
* src_obj
= s
->first
;
6523 unsigned int src_indx
= s
->second
;
6524 symtab
->gc()->add_reference(src_obj
, src_indx
,
6525 ppc_object
, dst_indx
);
6529 ppc_object
->access_from_map()->clear();
6530 ppc_object
->process_gc_mark(symtab
);
6531 // Don't look at .opd relocs as .opd will reference everything.
6535 gold::gc_process_relocs
<size
, big_endian
, Powerpc
, Scan
, Classify_reloc
>(
6544 needs_special_offset_handling
,
6549 // Handle target specific gc actions when adding a gc reference from
6550 // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX
6551 // and DST_OFF. For powerpc64, this adds a referenc to the code
6552 // section of a function descriptor.
6554 template<int size
, bool big_endian
>
6556 Target_powerpc
<size
, big_endian
>::do_gc_add_reference(
6557 Symbol_table
* symtab
,
6559 unsigned int src_shndx
,
6561 unsigned int dst_shndx
,
6562 Address dst_off
) const
6564 if (size
!= 64 || dst_obj
->is_dynamic())
6567 Powerpc_relobj
<size
, big_endian
>* ppc_object
6568 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(dst_obj
);
6569 if (dst_shndx
!= 0 && dst_shndx
== ppc_object
->opd_shndx())
6571 if (ppc_object
->opd_valid())
6573 dst_shndx
= ppc_object
->get_opd_ent(dst_off
);
6574 symtab
->gc()->add_reference(src_obj
, src_shndx
, dst_obj
, dst_shndx
);
6578 // If we haven't run scan_opd_relocs, we must delay
6579 // processing this function descriptor reference.
6580 ppc_object
->add_reference(src_obj
, src_shndx
, dst_off
);
6585 // Add any special sections for this symbol to the gc work list.
6586 // For powerpc64, this adds the code section of a function
6589 template<int size
, bool big_endian
>
6591 Target_powerpc
<size
, big_endian
>::do_gc_mark_symbol(
6592 Symbol_table
* symtab
,
6597 Powerpc_relobj
<size
, big_endian
>* ppc_object
6598 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(sym
->object());
6600 unsigned int shndx
= sym
->shndx(&is_ordinary
);
6601 if (is_ordinary
&& shndx
!= 0 && shndx
== ppc_object
->opd_shndx())
6603 Sized_symbol
<size
>* gsym
= symtab
->get_sized_symbol
<size
>(sym
);
6604 Address dst_off
= gsym
->value();
6605 if (ppc_object
->opd_valid())
6607 unsigned int dst_indx
= ppc_object
->get_opd_ent(dst_off
);
6608 symtab
->gc()->worklist().push_back(Section_id(ppc_object
,
6612 ppc_object
->add_gc_mark(dst_off
);
6617 // For a symbol location in .opd, set LOC to the location of the
6620 template<int size
, bool big_endian
>
6622 Target_powerpc
<size
, big_endian
>::do_function_location(
6623 Symbol_location
* loc
) const
6625 if (size
== 64 && loc
->shndx
!= 0)
6627 if (loc
->object
->is_dynamic())
6629 Powerpc_dynobj
<size
, big_endian
>* ppc_object
6630 = static_cast<Powerpc_dynobj
<size
, big_endian
>*>(loc
->object
);
6631 if (loc
->shndx
== ppc_object
->opd_shndx())
6634 Address off
= loc
->offset
- ppc_object
->opd_address();
6635 loc
->shndx
= ppc_object
->get_opd_ent(off
, &dest_off
);
6636 loc
->offset
= dest_off
;
6641 const Powerpc_relobj
<size
, big_endian
>* ppc_object
6642 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>(loc
->object
);
6643 if (loc
->shndx
== ppc_object
->opd_shndx())
6646 loc
->shndx
= ppc_object
->get_opd_ent(loc
->offset
, &dest_off
);
6647 loc
->offset
= dest_off
;
6653 // FNOFFSET in section SHNDX in OBJECT is the start of a function
6654 // compiled with -fsplit-stack. The function calls non-split-stack
6655 // code. Change the function to ensure it has enough stack space to
6656 // call some random function.
6658 template<int size
, bool big_endian
>
6660 Target_powerpc
<size
, big_endian
>::do_calls_non_split(
6663 section_offset_type fnoffset
,
6664 section_size_type fnsize
,
6665 const unsigned char* prelocs
,
6667 unsigned char* view
,
6668 section_size_type view_size
,
6670 std::string
* to
) const
6672 // 32-bit not supported.
6676 Target::do_calls_non_split(object
, shndx
, fnoffset
, fnsize
,
6677 prelocs
, reloc_count
, view
, view_size
,
6682 // The function always starts with
6683 // ld %r0,-0x7000-64(%r13) # tcbhead_t.__private_ss
6684 // addis %r12,%r1,-allocate@ha
6685 // addi %r12,%r12,-allocate@l
6687 // but note that the addis or addi may be replaced with a nop
6689 unsigned char *entry
= view
+ fnoffset
;
6690 uint32_t insn
= elfcpp::Swap
<32, big_endian
>::readval(entry
);
6692 if ((insn
& 0xffff0000) == addis_2_12
)
6694 /* Skip ELFv2 global entry code. */
6696 insn
= elfcpp::Swap
<32, big_endian
>::readval(entry
);
6699 unsigned char *pinsn
= entry
;
6701 const uint32_t ld_private_ss
= 0xe80d8fc0;
6702 if (insn
== ld_private_ss
)
6704 int32_t allocate
= 0;
6708 insn
= elfcpp::Swap
<32, big_endian
>::readval(pinsn
);
6709 if ((insn
& 0xffff0000) == addis_12_1
)
6710 allocate
+= (insn
& 0xffff) << 16;
6711 else if ((insn
& 0xffff0000) == addi_12_1
6712 || (insn
& 0xffff0000) == addi_12_12
)
6713 allocate
+= ((insn
& 0xffff) ^ 0x8000) - 0x8000;
6714 else if (insn
!= nop
)
6717 if (insn
== cmpld_7_12_0
&& pinsn
== entry
+ 12)
6719 int extra
= parameters
->options().split_stack_adjust_size();
6721 if (allocate
>= 0 || extra
< 0)
6723 object
->error(_("split-stack stack size overflow at "
6724 "section %u offset %0zx"),
6725 shndx
, static_cast<size_t>(fnoffset
));
6729 insn
= addis_12_1
| (((allocate
+ 0x8000) >> 16) & 0xffff);
6730 if (insn
!= addis_12_1
)
6732 elfcpp::Swap
<32, big_endian
>::writeval(pinsn
, insn
);
6734 insn
= addi_12_12
| (allocate
& 0xffff);
6735 if (insn
!= addi_12_12
)
6737 elfcpp::Swap
<32, big_endian
>::writeval(pinsn
, insn
);
6743 insn
= addi_12_1
| (allocate
& 0xffff);
6744 elfcpp::Swap
<32, big_endian
>::writeval(pinsn
, insn
);
6747 if (pinsn
!= entry
+ 12)
6748 elfcpp::Swap
<32, big_endian
>::writeval(pinsn
, nop
);
6756 if (!object
->has_no_split_stack())
6757 object
->error(_("failed to match split-stack sequence at "
6758 "section %u offset %0zx"),
6759 shndx
, static_cast<size_t>(fnoffset
));
6763 // Scan relocations for a section.
6765 template<int size
, bool big_endian
>
6767 Target_powerpc
<size
, big_endian
>::scan_relocs(
6768 Symbol_table
* symtab
,
6770 Sized_relobj_file
<size
, big_endian
>* object
,
6771 unsigned int data_shndx
,
6772 unsigned int sh_type
,
6773 const unsigned char* prelocs
,
6775 Output_section
* output_section
,
6776 bool needs_special_offset_handling
,
6777 size_t local_symbol_count
,
6778 const unsigned char* plocal_symbols
)
6780 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
6781 typedef gold::Default_classify_reloc
<elfcpp::SHT_RELA
, size
, big_endian
>
6784 if (sh_type
== elfcpp::SHT_REL
)
6786 gold_error(_("%s: unsupported REL reloc section"),
6787 object
->name().c_str());
6791 gold::scan_relocs
<size
, big_endian
, Powerpc
, Scan
, Classify_reloc
>(
6800 needs_special_offset_handling
,
6805 // Functor class for processing the global symbol table.
6806 // Removes symbols defined on discarded opd entries.
6808 template<bool big_endian
>
6809 class Global_symbol_visitor_opd
6812 Global_symbol_visitor_opd()
6816 operator()(Sized_symbol
<64>* sym
)
6818 if (sym
->has_symtab_index()
6819 || sym
->source() != Symbol::FROM_OBJECT
6820 || !sym
->in_real_elf())
6823 if (sym
->object()->is_dynamic())
6826 Powerpc_relobj
<64, big_endian
>* symobj
6827 = static_cast<Powerpc_relobj
<64, big_endian
>*>(sym
->object());
6828 if (symobj
->opd_shndx() == 0)
6832 unsigned int shndx
= sym
->shndx(&is_ordinary
);
6833 if (shndx
== symobj
->opd_shndx()
6834 && symobj
->get_opd_discard(sym
->value()))
6836 sym
->set_undefined();
6837 sym
->set_visibility(elfcpp::STV_DEFAULT
);
6838 sym
->set_is_defined_in_discarded_section();
6839 sym
->set_symtab_index(-1U);
6844 template<int size
, bool big_endian
>
6846 Target_powerpc
<size
, big_endian
>::define_save_restore_funcs(
6848 Symbol_table
* symtab
)
6852 Output_data_save_res
<size
, big_endian
>* savres
6853 = new Output_data_save_res
<size
, big_endian
>(symtab
);
6854 this->savres_section_
= savres
;
6855 layout
->add_output_section_data(".text", elfcpp::SHT_PROGBITS
,
6856 elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
,
6857 savres
, ORDER_TEXT
, false);
6861 // Sort linker created .got section first (for the header), then input
6862 // sections belonging to files using small model code.
6864 template<bool big_endian
>
6865 class Sort_toc_sections
6869 operator()(const Output_section::Input_section
& is1
,
6870 const Output_section::Input_section
& is2
) const
6872 if (!is1
.is_input_section() && is2
.is_input_section())
6875 = (is1
.is_input_section()
6876 && (static_cast<const Powerpc_relobj
<64, big_endian
>*>(is1
.relobj())
6877 ->has_small_toc_reloc()));
6879 = (is2
.is_input_section()
6880 && (static_cast<const Powerpc_relobj
<64, big_endian
>*>(is2
.relobj())
6881 ->has_small_toc_reloc()));
6882 return small1
&& !small2
;
6886 // Finalize the sections.
6888 template<int size
, bool big_endian
>
6890 Target_powerpc
<size
, big_endian
>::do_finalize_sections(
6892 const Input_objects
*,
6893 Symbol_table
* symtab
)
6895 if (parameters
->doing_static_link())
6897 // At least some versions of glibc elf-init.o have a strong
6898 // reference to __rela_iplt marker syms. A weak ref would be
6900 if (this->iplt_
!= NULL
)
6902 Reloc_section
* rel
= this->iplt_
->rel_plt();
6903 symtab
->define_in_output_data("__rela_iplt_start", NULL
,
6904 Symbol_table::PREDEFINED
, rel
, 0, 0,
6905 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
6906 elfcpp::STV_HIDDEN
, 0, false, true);
6907 symtab
->define_in_output_data("__rela_iplt_end", NULL
,
6908 Symbol_table::PREDEFINED
, rel
, 0, 0,
6909 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
6910 elfcpp::STV_HIDDEN
, 0, true, true);
6914 symtab
->define_as_constant("__rela_iplt_start", NULL
,
6915 Symbol_table::PREDEFINED
, 0, 0,
6916 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
6917 elfcpp::STV_HIDDEN
, 0, true, false);
6918 symtab
->define_as_constant("__rela_iplt_end", NULL
,
6919 Symbol_table::PREDEFINED
, 0, 0,
6920 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
6921 elfcpp::STV_HIDDEN
, 0, true, false);
6927 typedef Global_symbol_visitor_opd
<big_endian
> Symbol_visitor
;
6928 symtab
->for_all_symbols
<64, Symbol_visitor
>(Symbol_visitor());
6930 if (!parameters
->options().relocatable())
6932 this->define_save_restore_funcs(layout
, symtab
);
6934 // Annoyingly, we need to make these sections now whether or
6935 // not we need them. If we delay until do_relax then we
6936 // need to mess with the relaxation machinery checkpointing.
6937 this->got_section(symtab
, layout
);
6938 this->make_brlt_section(layout
);
6940 if (parameters
->options().toc_sort())
6942 Output_section
* os
= this->got_
->output_section();
6943 if (os
!= NULL
&& os
->input_sections().size() > 1)
6944 std::stable_sort(os
->input_sections().begin(),
6945 os
->input_sections().end(),
6946 Sort_toc_sections
<big_endian
>());
6951 // Fill in some more dynamic tags.
6952 Output_data_dynamic
* odyn
= layout
->dynamic_data();
6955 const Reloc_section
* rel_plt
= (this->plt_
== NULL
6957 : this->plt_
->rel_plt());
6958 layout
->add_target_dynamic_tags(false, this->plt_
, rel_plt
,
6959 this->rela_dyn_
, true, size
== 32);
6963 if (this->got_
!= NULL
)
6965 this->got_
->finalize_data_size();
6966 odyn
->add_section_plus_offset(elfcpp::DT_PPC_GOT
,
6967 this->got_
, this->got_
->g_o_t());
6972 if (this->glink_
!= NULL
)
6974 this->glink_
->finalize_data_size();
6975 odyn
->add_section_plus_offset(elfcpp::DT_PPC64_GLINK
,
6977 (this->glink_
->pltresolve_size
6983 // Emit any relocs we saved in an attempt to avoid generating COPY
6985 if (this->copy_relocs_
.any_saved_relocs())
6986 this->copy_relocs_
.emit(this->rela_dyn_section(layout
));
6989 // Return TRUE iff INSN is one we expect on a _LO variety toc/got
6993 ok_lo_toc_insn(uint32_t insn
)
6995 return ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
6996 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
6997 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
6998 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
6999 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
7000 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
7001 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
7002 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
7003 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
7004 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
7005 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
7006 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
7007 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
7008 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
7009 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7011 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
7012 && ((insn
& 3) == 0 || (insn
& 3) == 3))
7013 || (insn
& (0x3f << 26)) == 12u << 26 /* addic */);
7016 // Return the value to use for a branch relocation.
7018 template<int size
, bool big_endian
>
7020 Target_powerpc
<size
, big_endian
>::symval_for_branch(
7021 const Symbol_table
* symtab
,
7022 const Sized_symbol
<size
>* gsym
,
7023 Powerpc_relobj
<size
, big_endian
>* object
,
7025 unsigned int *dest_shndx
)
7027 if (size
== 32 || this->abiversion() >= 2)
7031 // If the symbol is defined in an opd section, ie. is a function
7032 // descriptor, use the function descriptor code entry address
7033 Powerpc_relobj
<size
, big_endian
>* symobj
= object
;
7035 && gsym
->source() != Symbol::FROM_OBJECT
)
7038 symobj
= static_cast<Powerpc_relobj
<size
, big_endian
>*>(gsym
->object());
7039 unsigned int shndx
= symobj
->opd_shndx();
7042 Address opd_addr
= symobj
->get_output_section_offset(shndx
);
7043 if (opd_addr
== invalid_address
)
7045 opd_addr
+= symobj
->output_section_address(shndx
);
7046 if (*value
>= opd_addr
&& *value
< opd_addr
+ symobj
->section_size(shndx
))
7049 *dest_shndx
= symobj
->get_opd_ent(*value
- opd_addr
, &sec_off
);
7050 if (symtab
->is_section_folded(symobj
, *dest_shndx
))
7053 = symtab
->icf()->get_folded_section(symobj
, *dest_shndx
);
7054 symobj
= static_cast<Powerpc_relobj
<size
, big_endian
>*>(folded
.first
);
7055 *dest_shndx
= folded
.second
;
7057 Address sec_addr
= symobj
->get_output_section_offset(*dest_shndx
);
7058 if (sec_addr
== invalid_address
)
7061 sec_addr
+= symobj
->output_section(*dest_shndx
)->address();
7062 *value
= sec_addr
+ sec_off
;
7067 // Perform a relocation.
7069 template<int size
, bool big_endian
>
7071 Target_powerpc
<size
, big_endian
>::Relocate::relocate(
7072 const Relocate_info
<size
, big_endian
>* relinfo
,
7074 Target_powerpc
* target
,
7077 const unsigned char* preloc
,
7078 const Sized_symbol
<size
>* gsym
,
7079 const Symbol_value
<size
>* psymval
,
7080 unsigned char* view
,
7082 section_size_type view_size
)
7087 const elfcpp::Rela
<size
, big_endian
> rela(preloc
);
7088 unsigned int r_type
= elfcpp::elf_r_type
<size
>(rela
.get_r_info());
7089 switch (this->maybe_skip_tls_get_addr_call(r_type
, gsym
))
7091 case Track_tls::NOT_EXPECTED
:
7092 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
7093 _("__tls_get_addr call lacks marker reloc"));
7095 case Track_tls::EXPECTED
:
7096 // We have already complained.
7098 case Track_tls::SKIP
:
7100 case Track_tls::NORMAL
:
7104 typedef Powerpc_relocate_functions
<size
, big_endian
> Reloc
;
7105 typedef typename
elfcpp::Swap
<32, big_endian
>::Valtype Insn
;
7106 typedef typename Reloc_types
<elfcpp::SHT_RELA
,
7107 size
, big_endian
>::Reloc Reltype
;
7108 // Offset from start of insn to d-field reloc.
7109 const int d_offset
= big_endian
? 2 : 0;
7111 Powerpc_relobj
<size
, big_endian
>* const object
7112 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(relinfo
->object
);
7114 bool has_stub_value
= false;
7115 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
7117 ? gsym
->use_plt_offset(Scan::get_reference_flags(r_type
, target
))
7118 : object
->local_has_plt_offset(r_sym
))
7119 && (!psymval
->is_ifunc_symbol()
7120 || Scan::reloc_needs_plt_for_ifunc(target
, object
, r_type
, false)))
7124 && target
->abiversion() >= 2
7125 && !parameters
->options().output_is_position_independent()
7126 && !is_branch_reloc(r_type
))
7128 Address off
= target
->glink_section()->find_global_entry(gsym
);
7129 if (off
!= invalid_address
)
7131 value
= target
->glink_section()->global_entry_address() + off
;
7132 has_stub_value
= true;
7137 Stub_table
<size
, big_endian
>* stub_table
7138 = object
->stub_table(relinfo
->data_shndx
);
7139 if (stub_table
== NULL
)
7141 // This is a ref from a data section to an ifunc symbol.
7142 if (target
->stub_tables().size() != 0)
7143 stub_table
= target
->stub_tables()[0];
7145 if (stub_table
!= NULL
)
7149 off
= stub_table
->find_plt_call_entry(object
, gsym
, r_type
,
7150 rela
.get_r_addend());
7152 off
= stub_table
->find_plt_call_entry(object
, r_sym
, r_type
,
7153 rela
.get_r_addend());
7154 if (off
!= invalid_address
)
7156 value
= stub_table
->stub_address() + off
;
7157 has_stub_value
= true;
7161 // We don't care too much about bogus debug references to
7162 // non-local functions, but otherwise there had better be a plt
7163 // call stub or global entry stub as appropriate.
7164 gold_assert(has_stub_value
|| !(os
->flags() & elfcpp::SHF_ALLOC
));
7167 if (r_type
== elfcpp::R_POWERPC_GOT16
7168 || r_type
== elfcpp::R_POWERPC_GOT16_LO
7169 || r_type
== elfcpp::R_POWERPC_GOT16_HI
7170 || r_type
== elfcpp::R_POWERPC_GOT16_HA
7171 || r_type
== elfcpp::R_PPC64_GOT16_DS
7172 || r_type
== elfcpp::R_PPC64_GOT16_LO_DS
)
7176 gold_assert(gsym
->has_got_offset(GOT_TYPE_STANDARD
));
7177 value
= gsym
->got_offset(GOT_TYPE_STANDARD
);
7181 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
7182 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_STANDARD
));
7183 value
= object
->local_got_offset(r_sym
, GOT_TYPE_STANDARD
);
7185 value
-= target
->got_section()->got_base_offset(object
);
7187 else if (r_type
== elfcpp::R_PPC64_TOC
)
7189 value
= (target
->got_section()->output_section()->address()
7190 + object
->toc_base_offset());
7192 else if (gsym
!= NULL
7193 && (r_type
== elfcpp::R_POWERPC_REL24
7194 || r_type
== elfcpp::R_PPC_PLTREL24
)
7199 typedef typename
elfcpp::Swap
<32, big_endian
>::Valtype Valtype
;
7200 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
7201 bool can_plt_call
= false;
7202 if (rela
.get_r_offset() + 8 <= view_size
)
7204 Valtype insn
= elfcpp::Swap
<32, big_endian
>::readval(wv
);
7205 Valtype insn2
= elfcpp::Swap
<32, big_endian
>::readval(wv
+ 1);
7208 || insn2
== cror_15_15_15
|| insn2
== cror_31_31_31
))
7210 elfcpp::Swap
<32, big_endian
>::
7211 writeval(wv
+ 1, ld_2_1
+ target
->stk_toc());
7212 can_plt_call
= true;
7217 // If we don't have a branch and link followed by a nop,
7218 // we can't go via the plt because there is no place to
7219 // put a toc restoring instruction.
7220 // Unless we know we won't be returning.
7221 if (strcmp(gsym
->name(), "__libc_start_main") == 0)
7222 can_plt_call
= true;
7226 // g++ as of 20130507 emits self-calls without a
7227 // following nop. This is arguably wrong since we have
7228 // conflicting information. On the one hand a global
7229 // symbol and on the other a local call sequence, but
7230 // don't error for this special case.
7231 // It isn't possible to cheaply verify we have exactly
7232 // such a call. Allow all calls to the same section.
7234 Address code
= value
;
7235 if (gsym
->source() == Symbol::FROM_OBJECT
7236 && gsym
->object() == object
)
7238 unsigned int dest_shndx
= 0;
7239 if (target
->abiversion() < 2)
7241 Address addend
= rela
.get_r_addend();
7242 code
= psymval
->value(object
, addend
);
7243 target
->symval_for_branch(relinfo
->symtab
, gsym
, object
,
7244 &code
, &dest_shndx
);
7247 if (dest_shndx
== 0)
7248 dest_shndx
= gsym
->shndx(&is_ordinary
);
7249 ok
= dest_shndx
== relinfo
->data_shndx
;
7253 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
7254 _("call lacks nop, can't restore toc; "
7255 "recompile with -fPIC"));
7261 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
7262 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
7263 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HI
7264 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HA
)
7266 // First instruction of a global dynamic sequence, arg setup insn.
7267 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
7268 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
7269 enum Got_type got_type
= GOT_TYPE_STANDARD
;
7270 if (tls_type
== tls::TLSOPT_NONE
)
7271 got_type
= GOT_TYPE_TLSGD
;
7272 else if (tls_type
== tls::TLSOPT_TO_IE
)
7273 got_type
= GOT_TYPE_TPREL
;
7274 if (got_type
!= GOT_TYPE_STANDARD
)
7278 gold_assert(gsym
->has_got_offset(got_type
));
7279 value
= gsym
->got_offset(got_type
);
7283 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
7284 gold_assert(object
->local_has_got_offset(r_sym
, got_type
));
7285 value
= object
->local_got_offset(r_sym
, got_type
);
7287 value
-= target
->got_section()->got_base_offset(object
);
7289 if (tls_type
== tls::TLSOPT_TO_IE
)
7291 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
7292 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
7294 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
7295 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7296 insn
&= (1 << 26) - (1 << 16); // extract rt,ra from addi
7298 insn
|= 32 << 26; // lwz
7300 insn
|= 58 << 26; // ld
7301 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7303 r_type
+= (elfcpp::R_POWERPC_GOT_TPREL16
7304 - elfcpp::R_POWERPC_GOT_TLSGD16
);
7306 else if (tls_type
== tls::TLSOPT_TO_LE
)
7308 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
7309 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
7311 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
7312 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7313 insn
&= (1 << 26) - (1 << 21); // extract rt
7318 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7319 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
7320 value
= psymval
->value(object
, rela
.get_r_addend());
7324 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
7326 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7327 r_type
= elfcpp::R_POWERPC_NONE
;
7331 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
7332 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
7333 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HI
7334 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HA
)
7336 // First instruction of a local dynamic sequence, arg setup insn.
7337 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
7338 if (tls_type
== tls::TLSOPT_NONE
)
7340 value
= target
->tlsld_got_offset();
7341 value
-= target
->got_section()->got_base_offset(object
);
7345 gold_assert(tls_type
== tls::TLSOPT_TO_LE
);
7346 if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
7347 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
)
7349 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
7350 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7351 insn
&= (1 << 26) - (1 << 21); // extract rt
7356 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7357 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
7362 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
7364 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7365 r_type
= elfcpp::R_POWERPC_NONE
;
7369 else if (r_type
== elfcpp::R_POWERPC_GOT_DTPREL16
7370 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_LO
7371 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_HI
7372 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_HA
)
7374 // Accesses relative to a local dynamic sequence address,
7375 // no optimisation here.
7378 gold_assert(gsym
->has_got_offset(GOT_TYPE_DTPREL
));
7379 value
= gsym
->got_offset(GOT_TYPE_DTPREL
);
7383 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
7384 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_DTPREL
));
7385 value
= object
->local_got_offset(r_sym
, GOT_TYPE_DTPREL
);
7387 value
-= target
->got_section()->got_base_offset(object
);
7389 else if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
7390 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
7391 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HI
7392 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HA
)
7394 // First instruction of initial exec sequence.
7395 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
7396 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
7397 if (tls_type
== tls::TLSOPT_NONE
)
7401 gold_assert(gsym
->has_got_offset(GOT_TYPE_TPREL
));
7402 value
= gsym
->got_offset(GOT_TYPE_TPREL
);
7406 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
7407 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_TPREL
));
7408 value
= object
->local_got_offset(r_sym
, GOT_TYPE_TPREL
);
7410 value
-= target
->got_section()->got_base_offset(object
);
7414 gold_assert(tls_type
== tls::TLSOPT_TO_LE
);
7415 if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
7416 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
)
7418 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
7419 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7420 insn
&= (1 << 26) - (1 << 21); // extract rt from ld
7425 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7426 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
7427 value
= psymval
->value(object
, rela
.get_r_addend());
7431 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
7433 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7434 r_type
= elfcpp::R_POWERPC_NONE
;
7438 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
7439 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
7441 // Second instruction of a global dynamic sequence,
7442 // the __tls_get_addr call
7443 this->expect_tls_get_addr_call(relinfo
, relnum
, rela
.get_r_offset());
7444 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
7445 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
7446 if (tls_type
!= tls::TLSOPT_NONE
)
7448 if (tls_type
== tls::TLSOPT_TO_IE
)
7450 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
7451 Insn insn
= add_3_3_13
;
7454 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7455 r_type
= elfcpp::R_POWERPC_NONE
;
7459 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
7460 Insn insn
= addi_3_3
;
7461 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7462 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
7464 value
= psymval
->value(object
, rela
.get_r_addend());
7466 this->skip_next_tls_get_addr_call();
7469 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
7470 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
7472 // Second instruction of a local dynamic sequence,
7473 // the __tls_get_addr call
7474 this->expect_tls_get_addr_call(relinfo
, relnum
, rela
.get_r_offset());
7475 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
7476 if (tls_type
== tls::TLSOPT_TO_LE
)
7478 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
7479 Insn insn
= addi_3_3
;
7480 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7481 this->skip_next_tls_get_addr_call();
7482 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
7487 else if (r_type
== elfcpp::R_POWERPC_TLS
)
7489 // Second instruction of an initial exec sequence
7490 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
7491 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
7492 if (tls_type
== tls::TLSOPT_TO_LE
)
7494 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
7495 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7496 unsigned int reg
= size
== 32 ? 2 : 13;
7497 insn
= at_tls_transform(insn
, reg
);
7498 gold_assert(insn
!= 0);
7499 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7500 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
7502 value
= psymval
->value(object
, rela
.get_r_addend());
7505 else if (!has_stub_value
)
7508 if (!(size
== 32 && r_type
== elfcpp::R_PPC_PLTREL24
))
7509 addend
= rela
.get_r_addend();
7510 value
= psymval
->value(object
, addend
);
7511 if (size
== 64 && is_branch_reloc(r_type
))
7513 if (target
->abiversion() >= 2)
7516 value
+= object
->ppc64_local_entry_offset(gsym
);
7518 value
+= object
->ppc64_local_entry_offset(r_sym
);
7522 unsigned int dest_shndx
;
7523 target
->symval_for_branch(relinfo
->symtab
, gsym
, object
,
7524 &value
, &dest_shndx
);
7527 Address max_branch_offset
= max_branch_delta(r_type
);
7528 if (max_branch_offset
!= 0
7529 && value
- address
+ max_branch_offset
>= 2 * max_branch_offset
)
7531 Stub_table
<size
, big_endian
>* stub_table
7532 = object
->stub_table(relinfo
->data_shndx
);
7533 if (stub_table
!= NULL
)
7535 Address off
= stub_table
->find_long_branch_entry(object
, value
);
7536 if (off
!= invalid_address
)
7538 value
= (stub_table
->stub_address() + stub_table
->plt_size()
7540 has_stub_value
= true;
7548 case elfcpp::R_PPC64_REL64
:
7549 case elfcpp::R_POWERPC_REL32
:
7550 case elfcpp::R_POWERPC_REL24
:
7551 case elfcpp::R_PPC_PLTREL24
:
7552 case elfcpp::R_PPC_LOCAL24PC
:
7553 case elfcpp::R_POWERPC_REL16
:
7554 case elfcpp::R_POWERPC_REL16_LO
:
7555 case elfcpp::R_POWERPC_REL16_HI
:
7556 case elfcpp::R_POWERPC_REL16_HA
:
7557 case elfcpp::R_POWERPC_REL16DX_HA
:
7558 case elfcpp::R_POWERPC_REL14
:
7559 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
7560 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
7564 case elfcpp::R_PPC64_TOC16
:
7565 case elfcpp::R_PPC64_TOC16_LO
:
7566 case elfcpp::R_PPC64_TOC16_HI
:
7567 case elfcpp::R_PPC64_TOC16_HA
:
7568 case elfcpp::R_PPC64_TOC16_DS
:
7569 case elfcpp::R_PPC64_TOC16_LO_DS
:
7570 // Subtract the TOC base address.
7571 value
-= (target
->got_section()->output_section()->address()
7572 + object
->toc_base_offset());
7575 case elfcpp::R_POWERPC_SECTOFF
:
7576 case elfcpp::R_POWERPC_SECTOFF_LO
:
7577 case elfcpp::R_POWERPC_SECTOFF_HI
:
7578 case elfcpp::R_POWERPC_SECTOFF_HA
:
7579 case elfcpp::R_PPC64_SECTOFF_DS
:
7580 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
7582 value
-= os
->address();
7585 case elfcpp::R_PPC64_TPREL16_DS
:
7586 case elfcpp::R_PPC64_TPREL16_LO_DS
:
7587 case elfcpp::R_PPC64_TPREL16_HIGH
:
7588 case elfcpp::R_PPC64_TPREL16_HIGHA
:
7590 // R_PPC_TLSGD, R_PPC_TLSLD, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HI
7593 case elfcpp::R_POWERPC_TPREL16
:
7594 case elfcpp::R_POWERPC_TPREL16_LO
:
7595 case elfcpp::R_POWERPC_TPREL16_HI
:
7596 case elfcpp::R_POWERPC_TPREL16_HA
:
7597 case elfcpp::R_POWERPC_TPREL
:
7598 case elfcpp::R_PPC64_TPREL16_HIGHER
:
7599 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
7600 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
7601 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
7602 // tls symbol values are relative to tls_segment()->vaddr()
7606 case elfcpp::R_PPC64_DTPREL16_DS
:
7607 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
7608 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
7609 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
7610 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
7611 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
7613 // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO
7614 // R_PPC_EMB_NADDR16_HI, R_PPC_EMB_NADDR16_HA, R_PPC_EMB_SDAI16
7617 case elfcpp::R_POWERPC_DTPREL16
:
7618 case elfcpp::R_POWERPC_DTPREL16_LO
:
7619 case elfcpp::R_POWERPC_DTPREL16_HI
:
7620 case elfcpp::R_POWERPC_DTPREL16_HA
:
7621 case elfcpp::R_POWERPC_DTPREL
:
7622 case elfcpp::R_PPC64_DTPREL16_HIGH
:
7623 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
7624 // tls symbol values are relative to tls_segment()->vaddr()
7625 value
-= dtp_offset
;
7628 case elfcpp::R_PPC64_ADDR64_LOCAL
:
7630 value
+= object
->ppc64_local_entry_offset(gsym
);
7632 value
+= object
->ppc64_local_entry_offset(r_sym
);
7639 Insn branch_bit
= 0;
7642 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
7643 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
7644 branch_bit
= 1 << 21;
7646 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
7647 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
7649 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
7650 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7653 if (this->is_isa_v2
)
7655 // Set 'a' bit. This is 0b00010 in BO field for branch
7656 // on CR(BI) insns (BO == 001at or 011at), and 0b01000
7657 // for branch on CTR insns (BO == 1a00t or 1a01t).
7658 if ((insn
& (0x14 << 21)) == (0x04 << 21))
7660 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
7667 // Invert 'y' bit if not the default.
7668 if (static_cast<Signed_address
>(value
) < 0)
7671 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7681 // Multi-instruction sequences that access the TOC can be
7682 // optimized, eg. addis ra,r2,0; addi rb,ra,x;
7683 // to nop; addi rb,r2,x;
7689 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
7690 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
7691 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
7692 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
7693 case elfcpp::R_POWERPC_GOT16_HA
:
7694 case elfcpp::R_PPC64_TOC16_HA
:
7695 if (parameters
->options().toc_optimize())
7697 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
7698 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7699 if ((insn
& ((0x3f << 26) | 0x1f << 16))
7700 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
7701 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
7702 _("toc optimization is not supported "
7703 "for %#08x instruction"), insn
);
7704 else if (value
+ 0x8000 < 0x10000)
7706 elfcpp::Swap
<32, big_endian
>::writeval(iview
, nop
);
7712 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
7713 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
7714 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
7715 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
7716 case elfcpp::R_POWERPC_GOT16_LO
:
7717 case elfcpp::R_PPC64_GOT16_LO_DS
:
7718 case elfcpp::R_PPC64_TOC16_LO
:
7719 case elfcpp::R_PPC64_TOC16_LO_DS
:
7720 if (parameters
->options().toc_optimize())
7722 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
7723 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7724 if (!ok_lo_toc_insn(insn
))
7725 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
7726 _("toc optimization is not supported "
7727 "for %#08x instruction"), insn
);
7728 else if (value
+ 0x8000 < 0x10000)
7730 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
7732 // Transform addic to addi when we change reg.
7733 insn
&= ~((0x3f << 26) | (0x1f << 16));
7734 insn
|= (14u << 26) | (2 << 16);
7738 insn
&= ~(0x1f << 16);
7741 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7746 case elfcpp::R_PPC64_ENTRY
:
7747 value
= (target
->got_section()->output_section()->address()
7748 + object
->toc_base_offset());
7749 if (value
+ 0x80008000 <= 0xffffffff
7750 && !parameters
->options().output_is_position_independent())
7752 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
7753 Insn insn1
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7754 Insn insn2
= elfcpp::Swap
<32, big_endian
>::readval(iview
+ 1);
7756 if ((insn1
& ~0xfffc) == ld_2_12
7757 && insn2
== add_2_2_12
)
7759 insn1
= lis_2
+ ha(value
);
7760 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn1
);
7761 insn2
= addi_2_2
+ l(value
);
7762 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1, insn2
);
7769 if (value
+ 0x80008000 <= 0xffffffff)
7771 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
7772 Insn insn1
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7773 Insn insn2
= elfcpp::Swap
<32, big_endian
>::readval(iview
+ 1);
7775 if ((insn1
& ~0xfffc) == ld_2_12
7776 && insn2
== add_2_2_12
)
7778 insn1
= addis_2_12
+ ha(value
);
7779 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn1
);
7780 insn2
= addi_2_2
+ l(value
);
7781 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1, insn2
);
7788 case elfcpp::R_POWERPC_REL16_LO
:
7789 // If we are generating a non-PIC executable, edit
7790 // 0: addis 2,12,.TOC.-0b@ha
7791 // addi 2,2,.TOC.-0b@l
7792 // used by ELFv2 global entry points to set up r2, to
7795 // if .TOC. is in range. */
7796 if (value
+ address
- 4 + 0x80008000 <= 0xffffffff
7799 && target
->abiversion() >= 2
7800 && !parameters
->options().output_is_position_independent()
7801 && rela
.get_r_addend() == d_offset
+ 4
7803 && strcmp(gsym
->name(), ".TOC.") == 0)
7805 const int reloc_size
7806 = Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
7807 Reltype
prev_rela(preloc
- reloc_size
);
7808 if ((prev_rela
.get_r_info()
7809 == elfcpp::elf_r_info
<size
>(r_sym
,
7810 elfcpp::R_POWERPC_REL16_HA
))
7811 && prev_rela
.get_r_offset() + 4 == rela
.get_r_offset()
7812 && prev_rela
.get_r_addend() + 4 == rela
.get_r_addend())
7814 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
7815 Insn insn1
= elfcpp::Swap
<32, big_endian
>::readval(iview
- 1);
7816 Insn insn2
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7818 if ((insn1
& 0xffff0000) == addis_2_12
7819 && (insn2
& 0xffff0000) == addi_2_2
)
7821 insn1
= lis_2
+ ha(value
+ address
- 4);
7822 elfcpp::Swap
<32, big_endian
>::writeval(iview
- 1, insn1
);
7823 insn2
= addi_2_2
+ l(value
+ address
- 4);
7824 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn2
);
7827 relinfo
->rr
->set_strategy(relnum
- 1,
7828 Relocatable_relocs::RELOC_SPECIAL
);
7829 relinfo
->rr
->set_strategy(relnum
,
7830 Relocatable_relocs::RELOC_SPECIAL
);
7840 typename
Reloc::Overflow_check overflow
= Reloc::CHECK_NONE
;
7841 elfcpp::Shdr
<size
, big_endian
> shdr(relinfo
->data_shdr
);
7844 case elfcpp::R_POWERPC_ADDR32
:
7845 case elfcpp::R_POWERPC_UADDR32
:
7847 overflow
= Reloc::CHECK_BITFIELD
;
7850 case elfcpp::R_POWERPC_REL32
:
7851 case elfcpp::R_POWERPC_REL16DX_HA
:
7853 overflow
= Reloc::CHECK_SIGNED
;
7856 case elfcpp::R_POWERPC_UADDR16
:
7857 overflow
= Reloc::CHECK_BITFIELD
;
7860 case elfcpp::R_POWERPC_ADDR16
:
7861 // We really should have three separate relocations,
7862 // one for 16-bit data, one for insns with 16-bit signed fields,
7863 // and one for insns with 16-bit unsigned fields.
7864 overflow
= Reloc::CHECK_BITFIELD
;
7865 if ((shdr
.get_sh_flags() & elfcpp::SHF_EXECINSTR
) != 0)
7866 overflow
= Reloc::CHECK_LOW_INSN
;
7869 case elfcpp::R_POWERPC_ADDR16_HI
:
7870 case elfcpp::R_POWERPC_ADDR16_HA
:
7871 case elfcpp::R_POWERPC_GOT16_HI
:
7872 case elfcpp::R_POWERPC_GOT16_HA
:
7873 case elfcpp::R_POWERPC_PLT16_HI
:
7874 case elfcpp::R_POWERPC_PLT16_HA
:
7875 case elfcpp::R_POWERPC_SECTOFF_HI
:
7876 case elfcpp::R_POWERPC_SECTOFF_HA
:
7877 case elfcpp::R_PPC64_TOC16_HI
:
7878 case elfcpp::R_PPC64_TOC16_HA
:
7879 case elfcpp::R_PPC64_PLTGOT16_HI
:
7880 case elfcpp::R_PPC64_PLTGOT16_HA
:
7881 case elfcpp::R_POWERPC_TPREL16_HI
:
7882 case elfcpp::R_POWERPC_TPREL16_HA
:
7883 case elfcpp::R_POWERPC_DTPREL16_HI
:
7884 case elfcpp::R_POWERPC_DTPREL16_HA
:
7885 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
7886 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
7887 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
7888 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
7889 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
7890 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
7891 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
7892 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
7893 case elfcpp::R_POWERPC_REL16_HI
:
7894 case elfcpp::R_POWERPC_REL16_HA
:
7896 overflow
= Reloc::CHECK_HIGH_INSN
;
7899 case elfcpp::R_POWERPC_REL16
:
7900 case elfcpp::R_PPC64_TOC16
:
7901 case elfcpp::R_POWERPC_GOT16
:
7902 case elfcpp::R_POWERPC_SECTOFF
:
7903 case elfcpp::R_POWERPC_TPREL16
:
7904 case elfcpp::R_POWERPC_DTPREL16
:
7905 case elfcpp::R_POWERPC_GOT_TLSGD16
:
7906 case elfcpp::R_POWERPC_GOT_TLSLD16
:
7907 case elfcpp::R_POWERPC_GOT_TPREL16
:
7908 case elfcpp::R_POWERPC_GOT_DTPREL16
:
7909 overflow
= Reloc::CHECK_LOW_INSN
;
7912 case elfcpp::R_POWERPC_ADDR24
:
7913 case elfcpp::R_POWERPC_ADDR14
:
7914 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
7915 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
7916 case elfcpp::R_PPC64_ADDR16_DS
:
7917 case elfcpp::R_POWERPC_REL24
:
7918 case elfcpp::R_PPC_PLTREL24
:
7919 case elfcpp::R_PPC_LOCAL24PC
:
7920 case elfcpp::R_PPC64_TPREL16_DS
:
7921 case elfcpp::R_PPC64_DTPREL16_DS
:
7922 case elfcpp::R_PPC64_TOC16_DS
:
7923 case elfcpp::R_PPC64_GOT16_DS
:
7924 case elfcpp::R_PPC64_SECTOFF_DS
:
7925 case elfcpp::R_POWERPC_REL14
:
7926 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
7927 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
7928 overflow
= Reloc::CHECK_SIGNED
;
7932 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
7935 if (overflow
== Reloc::CHECK_LOW_INSN
7936 || overflow
== Reloc::CHECK_HIGH_INSN
)
7938 insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7940 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
7941 overflow
= Reloc::CHECK_BITFIELD
;
7942 else if (overflow
== Reloc::CHECK_LOW_INSN
7943 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
7944 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
7945 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
7946 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
7947 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
7948 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
7949 overflow
= Reloc::CHECK_UNSIGNED
;
7951 overflow
= Reloc::CHECK_SIGNED
;
7954 bool maybe_dq_reloc
= false;
7955 typename Powerpc_relocate_functions
<size
, big_endian
>::Status status
7956 = Powerpc_relocate_functions
<size
, big_endian
>::STATUS_OK
;
7959 case elfcpp::R_POWERPC_NONE
:
7960 case elfcpp::R_POWERPC_TLS
:
7961 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
7962 case elfcpp::R_POWERPC_GNU_VTENTRY
:
7965 case elfcpp::R_PPC64_ADDR64
:
7966 case elfcpp::R_PPC64_REL64
:
7967 case elfcpp::R_PPC64_TOC
:
7968 case elfcpp::R_PPC64_ADDR64_LOCAL
:
7969 Reloc::addr64(view
, value
);
7972 case elfcpp::R_POWERPC_TPREL
:
7973 case elfcpp::R_POWERPC_DTPREL
:
7975 Reloc::addr64(view
, value
);
7977 status
= Reloc::addr32(view
, value
, overflow
);
7980 case elfcpp::R_PPC64_UADDR64
:
7981 Reloc::addr64_u(view
, value
);
7984 case elfcpp::R_POWERPC_ADDR32
:
7985 status
= Reloc::addr32(view
, value
, overflow
);
7988 case elfcpp::R_POWERPC_REL32
:
7989 case elfcpp::R_POWERPC_UADDR32
:
7990 status
= Reloc::addr32_u(view
, value
, overflow
);
7993 case elfcpp::R_POWERPC_ADDR24
:
7994 case elfcpp::R_POWERPC_REL24
:
7995 case elfcpp::R_PPC_PLTREL24
:
7996 case elfcpp::R_PPC_LOCAL24PC
:
7997 status
= Reloc::addr24(view
, value
, overflow
);
8000 case elfcpp::R_POWERPC_GOT_DTPREL16
:
8001 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
8002 case elfcpp::R_POWERPC_GOT_TPREL16
:
8003 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
8006 // On ppc64 these are all ds form
8007 maybe_dq_reloc
= true;
8011 case elfcpp::R_POWERPC_ADDR16
:
8012 case elfcpp::R_POWERPC_REL16
:
8013 case elfcpp::R_PPC64_TOC16
:
8014 case elfcpp::R_POWERPC_GOT16
:
8015 case elfcpp::R_POWERPC_SECTOFF
:
8016 case elfcpp::R_POWERPC_TPREL16
:
8017 case elfcpp::R_POWERPC_DTPREL16
:
8018 case elfcpp::R_POWERPC_GOT_TLSGD16
:
8019 case elfcpp::R_POWERPC_GOT_TLSLD16
:
8020 case elfcpp::R_POWERPC_ADDR16_LO
:
8021 case elfcpp::R_POWERPC_REL16_LO
:
8022 case elfcpp::R_PPC64_TOC16_LO
:
8023 case elfcpp::R_POWERPC_GOT16_LO
:
8024 case elfcpp::R_POWERPC_SECTOFF_LO
:
8025 case elfcpp::R_POWERPC_TPREL16_LO
:
8026 case elfcpp::R_POWERPC_DTPREL16_LO
:
8027 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
8028 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
8030 status
= Reloc::addr16(view
, value
, overflow
);
8032 maybe_dq_reloc
= true;
8035 case elfcpp::R_POWERPC_UADDR16
:
8036 status
= Reloc::addr16_u(view
, value
, overflow
);
8039 case elfcpp::R_PPC64_ADDR16_HIGH
:
8040 case elfcpp::R_PPC64_TPREL16_HIGH
:
8041 case elfcpp::R_PPC64_DTPREL16_HIGH
:
8043 // R_PPC_EMB_MRKREF, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HA
8046 case elfcpp::R_POWERPC_ADDR16_HI
:
8047 case elfcpp::R_POWERPC_REL16_HI
:
8048 case elfcpp::R_PPC64_TOC16_HI
:
8049 case elfcpp::R_POWERPC_GOT16_HI
:
8050 case elfcpp::R_POWERPC_SECTOFF_HI
:
8051 case elfcpp::R_POWERPC_TPREL16_HI
:
8052 case elfcpp::R_POWERPC_DTPREL16_HI
:
8053 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
8054 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
8055 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
8056 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
8057 Reloc::addr16_hi(view
, value
);
8060 case elfcpp::R_PPC64_ADDR16_HIGHA
:
8061 case elfcpp::R_PPC64_TPREL16_HIGHA
:
8062 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
8064 // R_PPC_EMB_RELSEC16, R_PPC_EMB_RELST_HI, R_PPC_EMB_BIT_FLD
8067 case elfcpp::R_POWERPC_ADDR16_HA
:
8068 case elfcpp::R_POWERPC_REL16_HA
:
8069 case elfcpp::R_PPC64_TOC16_HA
:
8070 case elfcpp::R_POWERPC_GOT16_HA
:
8071 case elfcpp::R_POWERPC_SECTOFF_HA
:
8072 case elfcpp::R_POWERPC_TPREL16_HA
:
8073 case elfcpp::R_POWERPC_DTPREL16_HA
:
8074 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
8075 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
8076 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
8077 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
8078 Reloc::addr16_ha(view
, value
);
8081 case elfcpp::R_POWERPC_REL16DX_HA
:
8082 status
= Reloc::addr16dx_ha(view
, value
, overflow
);
8085 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
8087 // R_PPC_EMB_NADDR16_LO
8090 case elfcpp::R_PPC64_ADDR16_HIGHER
:
8091 case elfcpp::R_PPC64_TPREL16_HIGHER
:
8092 Reloc::addr16_hi2(view
, value
);
8095 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
8097 // R_PPC_EMB_NADDR16_HI
8100 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
8101 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
8102 Reloc::addr16_ha2(view
, value
);
8105 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
8107 // R_PPC_EMB_NADDR16_HA
8110 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
8111 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
8112 Reloc::addr16_hi3(view
, value
);
8115 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
8120 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
8121 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
8122 Reloc::addr16_ha3(view
, value
);
8125 case elfcpp::R_PPC64_DTPREL16_DS
:
8126 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
8128 // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16
8131 case elfcpp::R_PPC64_TPREL16_DS
:
8132 case elfcpp::R_PPC64_TPREL16_LO_DS
:
8134 // R_PPC_TLSGD, R_PPC_TLSLD
8137 case elfcpp::R_PPC64_ADDR16_DS
:
8138 case elfcpp::R_PPC64_ADDR16_LO_DS
:
8139 case elfcpp::R_PPC64_TOC16_DS
:
8140 case elfcpp::R_PPC64_TOC16_LO_DS
:
8141 case elfcpp::R_PPC64_GOT16_DS
:
8142 case elfcpp::R_PPC64_GOT16_LO_DS
:
8143 case elfcpp::R_PPC64_SECTOFF_DS
:
8144 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
8145 maybe_dq_reloc
= true;
8148 case elfcpp::R_POWERPC_ADDR14
:
8149 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
8150 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
8151 case elfcpp::R_POWERPC_REL14
:
8152 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
8153 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
8154 status
= Reloc::addr14(view
, value
, overflow
);
8157 case elfcpp::R_POWERPC_COPY
:
8158 case elfcpp::R_POWERPC_GLOB_DAT
:
8159 case elfcpp::R_POWERPC_JMP_SLOT
:
8160 case elfcpp::R_POWERPC_RELATIVE
:
8161 case elfcpp::R_POWERPC_DTPMOD
:
8162 case elfcpp::R_PPC64_JMP_IREL
:
8163 case elfcpp::R_POWERPC_IRELATIVE
:
8164 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
8165 _("unexpected reloc %u in object file"),
8169 case elfcpp::R_PPC_EMB_SDA21
:
8174 // R_PPC64_TOCSAVE. For the time being this can be ignored.
8178 case elfcpp::R_PPC_EMB_SDA2I16
:
8179 case elfcpp::R_PPC_EMB_SDA2REL
:
8182 // R_PPC64_TLSGD, R_PPC64_TLSLD
8185 case elfcpp::R_POWERPC_PLT32
:
8186 case elfcpp::R_POWERPC_PLTREL32
:
8187 case elfcpp::R_POWERPC_PLT16_LO
:
8188 case elfcpp::R_POWERPC_PLT16_HI
:
8189 case elfcpp::R_POWERPC_PLT16_HA
:
8190 case elfcpp::R_PPC_SDAREL16
:
8191 case elfcpp::R_POWERPC_ADDR30
:
8192 case elfcpp::R_PPC64_PLT64
:
8193 case elfcpp::R_PPC64_PLTREL64
:
8194 case elfcpp::R_PPC64_PLTGOT16
:
8195 case elfcpp::R_PPC64_PLTGOT16_LO
:
8196 case elfcpp::R_PPC64_PLTGOT16_HI
:
8197 case elfcpp::R_PPC64_PLTGOT16_HA
:
8198 case elfcpp::R_PPC64_PLT16_LO_DS
:
8199 case elfcpp::R_PPC64_PLTGOT16_DS
:
8200 case elfcpp::R_PPC64_PLTGOT16_LO_DS
:
8201 case elfcpp::R_PPC_EMB_RELSDA
:
8202 case elfcpp::R_PPC_TOC16
:
8205 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
8206 _("unsupported reloc %u"),
8214 insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
8216 if ((insn
& (0x3f << 26)) == 56u << 26 /* lq */
8217 || ((insn
& (0x3f << 26)) == (61u << 26) /* lxv, stxv */
8218 && (insn
& 3) == 1))
8219 status
= Reloc::addr16_dq(view
, value
, overflow
);
8221 || (insn
& (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
8222 || (insn
& (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
8223 || (insn
& (0x3f << 26)) == 57u << 26 /* lfdp */
8224 || (insn
& (0x3f << 26)) == 61u << 26 /* stfdp */)
8225 status
= Reloc::addr16_ds(view
, value
, overflow
);
8227 status
= Reloc::addr16(view
, value
, overflow
);
8230 if (status
!= Powerpc_relocate_functions
<size
, big_endian
>::STATUS_OK
8233 && gsym
->is_undefined()
8234 && is_branch_reloc(r_type
))))
8236 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
8237 _("relocation overflow"));
8239 gold_info(_("try relinking with a smaller --stub-group-size"));
8245 // Relocate section data.
8247 template<int size
, bool big_endian
>
8249 Target_powerpc
<size
, big_endian
>::relocate_section(
8250 const Relocate_info
<size
, big_endian
>* relinfo
,
8251 unsigned int sh_type
,
8252 const unsigned char* prelocs
,
8254 Output_section
* output_section
,
8255 bool needs_special_offset_handling
,
8256 unsigned char* view
,
8258 section_size_type view_size
,
8259 const Reloc_symbol_changes
* reloc_symbol_changes
)
8261 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
8262 typedef typename Target_powerpc
<size
, big_endian
>::Relocate Powerpc_relocate
;
8263 typedef typename Target_powerpc
<size
, big_endian
>::Relocate_comdat_behavior
8264 Powerpc_comdat_behavior
;
8265 typedef gold::Default_classify_reloc
<elfcpp::SHT_RELA
, size
, big_endian
>
8268 gold_assert(sh_type
== elfcpp::SHT_RELA
);
8270 gold::relocate_section
<size
, big_endian
, Powerpc
, Powerpc_relocate
,
8271 Powerpc_comdat_behavior
, Classify_reloc
>(
8277 needs_special_offset_handling
,
8281 reloc_symbol_changes
);
8284 template<int size
, bool big_endian
>
8285 class Powerpc_scan_relocatable_reloc
8288 typedef typename Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::Reloc
8290 static const int reloc_size
=
8291 Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
8292 static const int sh_type
= elfcpp::SHT_RELA
;
8294 // Return the symbol referred to by the relocation.
8295 static inline unsigned int
8296 get_r_sym(const Reltype
* reloc
)
8297 { return elfcpp::elf_r_sym
<size
>(reloc
->get_r_info()); }
8299 // Return the type of the relocation.
8300 static inline unsigned int
8301 get_r_type(const Reltype
* reloc
)
8302 { return elfcpp::elf_r_type
<size
>(reloc
->get_r_info()); }
8304 // Return the strategy to use for a local symbol which is not a
8305 // section symbol, given the relocation type.
8306 inline Relocatable_relocs::Reloc_strategy
8307 local_non_section_strategy(unsigned int r_type
, Relobj
*, unsigned int r_sym
)
8309 if (r_type
== 0 && r_sym
== 0)
8310 return Relocatable_relocs::RELOC_DISCARD
;
8311 return Relocatable_relocs::RELOC_COPY
;
8314 // Return the strategy to use for a local symbol which is a section
8315 // symbol, given the relocation type.
8316 inline Relocatable_relocs::Reloc_strategy
8317 local_section_strategy(unsigned int, Relobj
*)
8319 return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
;
8322 // Return the strategy to use for a global symbol, given the
8323 // relocation type, the object, and the symbol index.
8324 inline Relocatable_relocs::Reloc_strategy
8325 global_strategy(unsigned int r_type
, Relobj
*, unsigned int)
8327 if (r_type
== elfcpp::R_PPC_PLTREL24
)
8328 return Relocatable_relocs::RELOC_SPECIAL
;
8329 return Relocatable_relocs::RELOC_COPY
;
8333 // Scan the relocs during a relocatable link.
8335 template<int size
, bool big_endian
>
8337 Target_powerpc
<size
, big_endian
>::scan_relocatable_relocs(
8338 Symbol_table
* symtab
,
8340 Sized_relobj_file
<size
, big_endian
>* object
,
8341 unsigned int data_shndx
,
8342 unsigned int sh_type
,
8343 const unsigned char* prelocs
,
8345 Output_section
* output_section
,
8346 bool needs_special_offset_handling
,
8347 size_t local_symbol_count
,
8348 const unsigned char* plocal_symbols
,
8349 Relocatable_relocs
* rr
)
8351 typedef Powerpc_scan_relocatable_reloc
<size
, big_endian
> Scan_strategy
;
8353 gold_assert(sh_type
== elfcpp::SHT_RELA
);
8355 gold::scan_relocatable_relocs
<size
, big_endian
, Scan_strategy
>(
8363 needs_special_offset_handling
,
8369 // Scan the relocs for --emit-relocs.
8371 template<int size
, bool big_endian
>
8373 Target_powerpc
<size
, big_endian
>::emit_relocs_scan(
8374 Symbol_table
* symtab
,
8376 Sized_relobj_file
<size
, big_endian
>* object
,
8377 unsigned int data_shndx
,
8378 unsigned int sh_type
,
8379 const unsigned char* prelocs
,
8381 Output_section
* output_section
,
8382 bool needs_special_offset_handling
,
8383 size_t local_symbol_count
,
8384 const unsigned char* plocal_syms
,
8385 Relocatable_relocs
* rr
)
8387 typedef gold::Default_classify_reloc
<elfcpp::SHT_RELA
, size
, big_endian
>
8389 typedef gold::Default_emit_relocs_strategy
<Classify_reloc
>
8390 Emit_relocs_strategy
;
8392 gold_assert(sh_type
== elfcpp::SHT_RELA
);
8394 gold::scan_relocatable_relocs
<size
, big_endian
, Emit_relocs_strategy
>(
8402 needs_special_offset_handling
,
8408 // Emit relocations for a section.
8409 // This is a modified version of the function by the same name in
8410 // target-reloc.h. Using relocate_special_relocatable for
8411 // R_PPC_PLTREL24 would require duplication of the entire body of the
8412 // loop, so we may as well duplicate the whole thing.
8414 template<int size
, bool big_endian
>
8416 Target_powerpc
<size
, big_endian
>::relocate_relocs(
8417 const Relocate_info
<size
, big_endian
>* relinfo
,
8418 unsigned int sh_type
,
8419 const unsigned char* prelocs
,
8421 Output_section
* output_section
,
8422 typename
elfcpp::Elf_types
<size
>::Elf_Off offset_in_output_section
,
8424 Address view_address
,
8426 unsigned char* reloc_view
,
8427 section_size_type reloc_view_size
)
8429 gold_assert(sh_type
== elfcpp::SHT_RELA
);
8431 typedef typename Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::Reloc
8433 typedef typename Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::Reloc_write
8435 const int reloc_size
8436 = Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
8437 // Offset from start of insn to d-field reloc.
8438 const int d_offset
= big_endian
? 2 : 0;
8440 Powerpc_relobj
<size
, big_endian
>* const object
8441 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(relinfo
->object
);
8442 const unsigned int local_count
= object
->local_symbol_count();
8443 unsigned int got2_shndx
= object
->got2_shndx();
8444 Address got2_addend
= 0;
8445 if (got2_shndx
!= 0)
8447 got2_addend
= object
->get_output_section_offset(got2_shndx
);
8448 gold_assert(got2_addend
!= invalid_address
);
8451 unsigned char* pwrite
= reloc_view
;
8452 bool zap_next
= false;
8453 for (size_t i
= 0; i
< reloc_count
; ++i
, prelocs
+= reloc_size
)
8455 Relocatable_relocs::Reloc_strategy strategy
= relinfo
->rr
->strategy(i
);
8456 if (strategy
== Relocatable_relocs::RELOC_DISCARD
)
8459 Reltype
reloc(prelocs
);
8460 Reltype_write
reloc_write(pwrite
);
8462 Address offset
= reloc
.get_r_offset();
8463 typename
elfcpp::Elf_types
<size
>::Elf_WXword r_info
= reloc
.get_r_info();
8464 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(r_info
);
8465 unsigned int r_type
= elfcpp::elf_r_type
<size
>(r_info
);
8466 const unsigned int orig_r_sym
= r_sym
;
8467 typename
elfcpp::Elf_types
<size
>::Elf_Swxword addend
8468 = reloc
.get_r_addend();
8469 const Symbol
* gsym
= NULL
;
8473 // We could arrange to discard these and other relocs for
8474 // tls optimised sequences in the strategy methods, but for
8475 // now do as BFD ld does.
8476 r_type
= elfcpp::R_POWERPC_NONE
;
8480 // Get the new symbol index.
8481 Output_section
* os
= NULL
;
8482 if (r_sym
< local_count
)
8486 case Relocatable_relocs::RELOC_COPY
:
8487 case Relocatable_relocs::RELOC_SPECIAL
:
8490 r_sym
= object
->symtab_index(r_sym
);
8491 gold_assert(r_sym
!= -1U);
8495 case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
:
8497 // We are adjusting a section symbol. We need to find
8498 // the symbol table index of the section symbol for
8499 // the output section corresponding to input section
8500 // in which this symbol is defined.
8501 gold_assert(r_sym
< local_count
);
8503 unsigned int shndx
=
8504 object
->local_symbol_input_shndx(r_sym
, &is_ordinary
);
8505 gold_assert(is_ordinary
);
8506 os
= object
->output_section(shndx
);
8507 gold_assert(os
!= NULL
);
8508 gold_assert(os
->needs_symtab_index());
8509 r_sym
= os
->symtab_index();
8519 gsym
= object
->global_symbol(r_sym
);
8520 gold_assert(gsym
!= NULL
);
8521 if (gsym
->is_forwarder())
8522 gsym
= relinfo
->symtab
->resolve_forwards(gsym
);
8524 gold_assert(gsym
->has_symtab_index());
8525 r_sym
= gsym
->symtab_index();
8528 // Get the new offset--the location in the output section where
8529 // this relocation should be applied.
8530 if (static_cast<Address
>(offset_in_output_section
) != invalid_address
)
8531 offset
+= offset_in_output_section
;
8534 section_offset_type sot_offset
=
8535 convert_types
<section_offset_type
, Address
>(offset
);
8536 section_offset_type new_sot_offset
=
8537 output_section
->output_offset(object
, relinfo
->data_shndx
,
8539 gold_assert(new_sot_offset
!= -1);
8540 offset
= new_sot_offset
;
8543 // In an object file, r_offset is an offset within the section.
8544 // In an executable or dynamic object, generated by
8545 // --emit-relocs, r_offset is an absolute address.
8546 if (!parameters
->options().relocatable())
8548 offset
+= view_address
;
8549 if (static_cast<Address
>(offset_in_output_section
) != invalid_address
)
8550 offset
-= offset_in_output_section
;
8553 // Handle the reloc addend based on the strategy.
8554 if (strategy
== Relocatable_relocs::RELOC_COPY
)
8556 else if (strategy
== Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
)
8558 const Symbol_value
<size
>* psymval
= object
->local_symbol(orig_r_sym
);
8559 gold_assert(os
!= NULL
);
8560 addend
= psymval
->value(object
, addend
) - os
->address();
8562 else if (strategy
== Relocatable_relocs::RELOC_SPECIAL
)
8566 if (addend
>= 32768)
8567 addend
+= got2_addend
;
8569 else if (r_type
== elfcpp::R_POWERPC_REL16_HA
)
8571 r_type
= elfcpp::R_POWERPC_ADDR16_HA
;
8574 else if (r_type
== elfcpp::R_POWERPC_REL16_LO
)
8576 r_type
= elfcpp::R_POWERPC_ADDR16_LO
;
8577 addend
-= d_offset
+ 4;
8583 if (!parameters
->options().relocatable())
8585 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
8586 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
8587 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HI
8588 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HA
)
8590 // First instruction of a global dynamic sequence,
8592 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
8593 switch (this->optimize_tls_gd(final
))
8595 case tls::TLSOPT_TO_IE
:
8596 r_type
+= (elfcpp::R_POWERPC_GOT_TPREL16
8597 - elfcpp::R_POWERPC_GOT_TLSGD16
);
8599 case tls::TLSOPT_TO_LE
:
8600 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
8601 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
8602 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
8605 r_type
= elfcpp::R_POWERPC_NONE
;
8613 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
8614 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
8615 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HI
8616 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HA
)
8618 // First instruction of a local dynamic sequence,
8620 if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE
)
8622 if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
8623 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
)
8625 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
8626 const Output_section
* os
= relinfo
->layout
->tls_segment()
8628 gold_assert(os
!= NULL
);
8629 gold_assert(os
->needs_symtab_index());
8630 r_sym
= os
->symtab_index();
8631 addend
= dtp_offset
;
8635 r_type
= elfcpp::R_POWERPC_NONE
;
8640 else if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
8641 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
8642 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HI
8643 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HA
)
8645 // First instruction of initial exec sequence.
8646 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
8647 if (this->optimize_tls_ie(final
) == tls::TLSOPT_TO_LE
)
8649 if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
8650 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
)
8651 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
8654 r_type
= elfcpp::R_POWERPC_NONE
;
8659 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
8660 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
8662 // Second instruction of a global dynamic sequence,
8663 // the __tls_get_addr call
8664 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
8665 switch (this->optimize_tls_gd(final
))
8667 case tls::TLSOPT_TO_IE
:
8668 r_type
= elfcpp::R_POWERPC_NONE
;
8671 case tls::TLSOPT_TO_LE
:
8672 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
8680 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
8681 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
8683 // Second instruction of a local dynamic sequence,
8684 // the __tls_get_addr call
8685 if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE
)
8687 const Output_section
* os
= relinfo
->layout
->tls_segment()
8689 gold_assert(os
!= NULL
);
8690 gold_assert(os
->needs_symtab_index());
8691 r_sym
= os
->symtab_index();
8692 addend
= dtp_offset
;
8693 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
8698 else if (r_type
== elfcpp::R_POWERPC_TLS
)
8700 // Second instruction of an initial exec sequence
8701 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
8702 if (this->optimize_tls_ie(final
) == tls::TLSOPT_TO_LE
)
8704 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
8710 reloc_write
.put_r_offset(offset
);
8711 reloc_write
.put_r_info(elfcpp::elf_r_info
<size
>(r_sym
, r_type
));
8712 reloc_write
.put_r_addend(addend
);
8714 pwrite
+= reloc_size
;
8717 gold_assert(static_cast<section_size_type
>(pwrite
- reloc_view
)
8718 == reloc_view_size
);
8721 // Return the value to use for a dynamic symbol which requires special
8722 // treatment. This is how we support equality comparisons of function
8723 // pointers across shared library boundaries, as described in the
8724 // processor specific ABI supplement.
8726 template<int size
, bool big_endian
>
8728 Target_powerpc
<size
, big_endian
>::do_dynsym_value(const Symbol
* gsym
) const
8732 gold_assert(gsym
->is_from_dynobj() && gsym
->has_plt_offset());
8733 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
8734 p
!= this->stub_tables_
.end();
8737 Address off
= (*p
)->find_plt_call_entry(gsym
);
8738 if (off
!= invalid_address
)
8739 return (*p
)->stub_address() + off
;
8742 else if (this->abiversion() >= 2)
8744 Address off
= this->glink_section()->find_global_entry(gsym
);
8745 if (off
!= invalid_address
)
8746 return this->glink_section()->global_entry_address() + off
;
8751 // Return the PLT address to use for a local symbol.
8752 template<int size
, bool big_endian
>
8754 Target_powerpc
<size
, big_endian
>::do_plt_address_for_local(
8755 const Relobj
* object
,
8756 unsigned int symndx
) const
8760 const Sized_relobj
<size
, big_endian
>* relobj
8761 = static_cast<const Sized_relobj
<size
, big_endian
>*>(object
);
8762 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
8763 p
!= this->stub_tables_
.end();
8766 Address off
= (*p
)->find_plt_call_entry(relobj
->sized_relobj(),
8768 if (off
!= invalid_address
)
8769 return (*p
)->stub_address() + off
;
8775 // Return the PLT address to use for a global symbol.
8776 template<int size
, bool big_endian
>
8778 Target_powerpc
<size
, big_endian
>::do_plt_address_for_global(
8779 const Symbol
* gsym
) const
8783 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
8784 p
!= this->stub_tables_
.end();
8787 Address off
= (*p
)->find_plt_call_entry(gsym
);
8788 if (off
!= invalid_address
)
8789 return (*p
)->stub_address() + off
;
8792 else if (this->abiversion() >= 2)
8794 Address off
= this->glink_section()->find_global_entry(gsym
);
8795 if (off
!= invalid_address
)
8796 return this->glink_section()->global_entry_address() + off
;
8801 // Return the offset to use for the GOT_INDX'th got entry which is
8802 // for a local tls symbol specified by OBJECT, SYMNDX.
8803 template<int size
, bool big_endian
>
8805 Target_powerpc
<size
, big_endian
>::do_tls_offset_for_local(
8806 const Relobj
* object
,
8807 unsigned int symndx
,
8808 unsigned int got_indx
) const
8810 const Powerpc_relobj
<size
, big_endian
>* ppc_object
8811 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>(object
);
8812 if (ppc_object
->local_symbol(symndx
)->is_tls_symbol())
8814 for (Got_type got_type
= GOT_TYPE_TLSGD
;
8815 got_type
<= GOT_TYPE_TPREL
;
8816 got_type
= Got_type(got_type
+ 1))
8817 if (ppc_object
->local_has_got_offset(symndx
, got_type
))
8819 unsigned int off
= ppc_object
->local_got_offset(symndx
, got_type
);
8820 if (got_type
== GOT_TYPE_TLSGD
)
8822 if (off
== got_indx
* (size
/ 8))
8824 if (got_type
== GOT_TYPE_TPREL
)
8834 // Return the offset to use for the GOT_INDX'th got entry which is
8835 // for global tls symbol GSYM.
8836 template<int size
, bool big_endian
>
8838 Target_powerpc
<size
, big_endian
>::do_tls_offset_for_global(
8840 unsigned int got_indx
) const
8842 if (gsym
->type() == elfcpp::STT_TLS
)
8844 for (Got_type got_type
= GOT_TYPE_TLSGD
;
8845 got_type
<= GOT_TYPE_TPREL
;
8846 got_type
= Got_type(got_type
+ 1))
8847 if (gsym
->has_got_offset(got_type
))
8849 unsigned int off
= gsym
->got_offset(got_type
);
8850 if (got_type
== GOT_TYPE_TLSGD
)
8852 if (off
== got_indx
* (size
/ 8))
8854 if (got_type
== GOT_TYPE_TPREL
)
8864 // The selector for powerpc object files.
8866 template<int size
, bool big_endian
>
8867 class Target_selector_powerpc
: public Target_selector
8870 Target_selector_powerpc()
8871 : Target_selector(size
== 64 ? elfcpp::EM_PPC64
: elfcpp::EM_PPC
,
8874 ? (big_endian
? "elf64-powerpc" : "elf64-powerpcle")
8875 : (big_endian
? "elf32-powerpc" : "elf32-powerpcle")),
8877 ? (big_endian
? "elf64ppc" : "elf64lppc")
8878 : (big_endian
? "elf32ppc" : "elf32lppc")))
8882 do_instantiate_target()
8883 { return new Target_powerpc
<size
, big_endian
>(); }
8886 Target_selector_powerpc
<32, true> target_selector_ppc32
;
8887 Target_selector_powerpc
<32, false> target_selector_ppc32le
;
8888 Target_selector_powerpc
<64, true> target_selector_ppc64
;
8889 Target_selector_powerpc
<64, false> target_selector_ppc64le
;
8891 // Instantiate these constants for -O0
8892 template<int size
, bool big_endian
>
8893 const int Output_data_glink
<size
, big_endian
>::pltresolve_size
;
8894 template<int size
, bool big_endian
>
8895 const typename Output_data_glink
<size
, big_endian
>::Address
8896 Output_data_glink
<size
, big_endian
>::invalid_address
;
8897 template<int size
, bool big_endian
>
8898 const typename Stub_table
<size
, big_endian
>::Address
8899 Stub_table
<size
, big_endian
>::invalid_address
;
8900 template<int size
, bool big_endian
>
8901 const typename Target_powerpc
<size
, big_endian
>::Address
8902 Target_powerpc
<size
, big_endian
>::invalid_address
;
8904 } // End anonymous namespace.