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
74 : output_section(NULL
), owner(NULL
)
77 Output_section
* output_section
;
78 const Output_section::Input_section
* owner
;
82 is_branch_reloc(unsigned int r_type
);
84 template<int size
, bool big_endian
>
85 class Powerpc_relobj
: public Sized_relobj_file
<size
, big_endian
>
88 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
89 typedef Unordered_set
<Section_id
, Section_id_hash
> Section_refs
;
90 typedef Unordered_map
<Address
, Section_refs
> Access_from
;
92 Powerpc_relobj(const std::string
& name
, Input_file
* input_file
, off_t offset
,
93 const typename
elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
94 : Sized_relobj_file
<size
, big_endian
>(name
, input_file
, offset
, ehdr
),
95 special_(0), has_small_toc_reloc_(false), opd_valid_(false),
96 opd_ent_(), access_from_map_(), has14_(), stub_table_index_(),
97 e_flags_(ehdr
.get_e_flags()), st_other_()
99 this->set_abiversion(0);
105 // Read the symbols then set up st_other vector.
107 do_read_symbols(Read_symbols_data
*);
109 // The .got2 section shndx.
114 return this->special_
;
119 // The .opd section shndx.
126 return this->special_
;
129 // Init OPD entry arrays.
131 init_opd(size_t opd_size
)
133 size_t count
= this->opd_ent_ndx(opd_size
);
134 this->opd_ent_
.resize(count
);
137 // Return section and offset of function entry for .opd + R_OFF.
139 get_opd_ent(Address r_off
, Address
* value
= NULL
) const
141 size_t ndx
= this->opd_ent_ndx(r_off
);
142 gold_assert(ndx
< this->opd_ent_
.size());
143 gold_assert(this->opd_ent_
[ndx
].shndx
!= 0);
145 *value
= this->opd_ent_
[ndx
].off
;
146 return this->opd_ent_
[ndx
].shndx
;
149 // Set section and offset of function entry for .opd + R_OFF.
151 set_opd_ent(Address r_off
, unsigned int shndx
, Address value
)
153 size_t ndx
= this->opd_ent_ndx(r_off
);
154 gold_assert(ndx
< this->opd_ent_
.size());
155 this->opd_ent_
[ndx
].shndx
= shndx
;
156 this->opd_ent_
[ndx
].off
= value
;
159 // Return discard flag for .opd + R_OFF.
161 get_opd_discard(Address r_off
) const
163 size_t ndx
= this->opd_ent_ndx(r_off
);
164 gold_assert(ndx
< this->opd_ent_
.size());
165 return this->opd_ent_
[ndx
].discard
;
168 // Set discard flag for .opd + R_OFF.
170 set_opd_discard(Address r_off
)
172 size_t ndx
= this->opd_ent_ndx(r_off
);
173 gold_assert(ndx
< this->opd_ent_
.size());
174 this->opd_ent_
[ndx
].discard
= true;
179 { return this->opd_valid_
; }
183 { this->opd_valid_
= true; }
185 // Examine .rela.opd to build info about function entry points.
187 scan_opd_relocs(size_t reloc_count
,
188 const unsigned char* prelocs
,
189 const unsigned char* plocal_syms
);
191 // Perform the Sized_relobj_file method, then set up opd info from
194 do_read_relocs(Read_relocs_data
*);
197 do_find_special_sections(Read_symbols_data
* sd
);
199 // Adjust this local symbol value. Return false if the symbol
200 // should be discarded from the output file.
202 do_adjust_local_symbol(Symbol_value
<size
>* lv
) const
204 if (size
== 64 && this->opd_shndx() != 0)
207 if (lv
->input_shndx(&is_ordinary
) != this->opd_shndx())
209 if (this->get_opd_discard(lv
->input_value()))
217 { return &this->access_from_map_
; }
219 // Add a reference from SRC_OBJ, SRC_INDX to this object's .opd
220 // section at DST_OFF.
222 add_reference(Relobj
* src_obj
,
223 unsigned int src_indx
,
224 typename
elfcpp::Elf_types
<size
>::Elf_Addr dst_off
)
226 Section_id
src_id(src_obj
, src_indx
);
227 this->access_from_map_
[dst_off
].insert(src_id
);
230 // Add a reference to the code section specified by the .opd entry
233 add_gc_mark(typename
elfcpp::Elf_types
<size
>::Elf_Addr dst_off
)
235 size_t ndx
= this->opd_ent_ndx(dst_off
);
236 if (ndx
>= this->opd_ent_
.size())
237 this->opd_ent_
.resize(ndx
+ 1);
238 this->opd_ent_
[ndx
].gc_mark
= true;
242 process_gc_mark(Symbol_table
* symtab
)
244 for (size_t i
= 0; i
< this->opd_ent_
.size(); i
++)
245 if (this->opd_ent_
[i
].gc_mark
)
247 unsigned int shndx
= this->opd_ent_
[i
].shndx
;
248 symtab
->gc()->worklist().push_back(Section_id(this, shndx
));
252 // Return offset in output GOT section that this object will use
253 // as a TOC pointer. Won't be just a constant with multi-toc support.
255 toc_base_offset() const
259 set_has_small_toc_reloc()
260 { has_small_toc_reloc_
= true; }
263 has_small_toc_reloc() const
264 { return has_small_toc_reloc_
; }
267 set_has_14bit_branch(unsigned int shndx
)
269 if (shndx
>= this->has14_
.size())
270 this->has14_
.resize(shndx
+ 1);
271 this->has14_
[shndx
] = true;
275 has_14bit_branch(unsigned int shndx
) const
276 { return shndx
< this->has14_
.size() && this->has14_
[shndx
]; }
279 set_stub_table(unsigned int shndx
, unsigned int stub_index
)
281 if (shndx
>= this->stub_table_index_
.size())
282 this->stub_table_index_
.resize(shndx
+ 1, -1);
283 this->stub_table_index_
[shndx
] = stub_index
;
286 Stub_table
<size
, big_endian
>*
287 stub_table(unsigned int shndx
)
289 if (shndx
< this->stub_table_index_
.size())
291 Target_powerpc
<size
, big_endian
>* target
292 = static_cast<Target_powerpc
<size
, big_endian
>*>(
293 parameters
->sized_target
<size
, big_endian
>());
294 unsigned int indx
= this->stub_table_index_
[shndx
];
295 gold_assert(indx
< target
->stub_tables().size());
296 return target
->stub_tables()[indx
];
304 this->stub_table_index_
.clear();
309 { return this->e_flags_
& elfcpp::EF_PPC64_ABI
; }
311 // Set ABI version for input and output
313 set_abiversion(int ver
);
316 ppc64_local_entry_offset(const Symbol
* sym
) const
317 { return elfcpp::ppc64_decode_local_entry(sym
->nonvis() >> 3); }
320 ppc64_local_entry_offset(unsigned int symndx
) const
321 { return elfcpp::ppc64_decode_local_entry(this->st_other_
[symndx
] >> 5); }
332 // Return index into opd_ent_ array for .opd entry at OFF.
333 // .opd entries are 24 bytes long, but they can be spaced 16 bytes
334 // apart when the language doesn't use the last 8-byte word, the
335 // environment pointer. Thus dividing the entry section offset by
336 // 16 will give an index into opd_ent_ that works for either layout
337 // of .opd. (It leaves some elements of the vector unused when .opd
338 // entries are spaced 24 bytes apart, but we don't know the spacing
339 // until relocations are processed, and in any case it is possible
340 // for an object to have some entries spaced 16 bytes apart and
341 // others 24 bytes apart.)
343 opd_ent_ndx(size_t off
) const
346 // For 32-bit the .got2 section shdnx, for 64-bit the .opd section shndx.
347 unsigned int special_
;
349 // For 64-bit, whether this object uses small model relocs to access
351 bool has_small_toc_reloc_
;
353 // Set at the start of gc_process_relocs, when we know opd_ent_
354 // vector is valid. The flag could be made atomic and set in
355 // do_read_relocs with memory_order_release and then tested with
356 // memory_order_acquire, potentially resulting in fewer entries in
360 // The first 8-byte word of an OPD entry gives the address of the
361 // entry point of the function. Relocatable object files have a
362 // relocation on this word. The following vector records the
363 // section and offset specified by these relocations.
364 std::vector
<Opd_ent
> opd_ent_
;
366 // References made to this object's .opd section when running
367 // gc_process_relocs for another object, before the opd_ent_ vector
368 // is valid for this object.
369 Access_from access_from_map_
;
371 // Whether input section has a 14-bit branch reloc.
372 std::vector
<bool> has14_
;
374 // The stub table to use for a given input section.
375 std::vector
<unsigned int> stub_table_index_
;
378 elfcpp::Elf_Word e_flags_
;
380 // ELF st_other field for local symbols.
381 std::vector
<unsigned char> st_other_
;
384 template<int size
, bool big_endian
>
385 class Powerpc_dynobj
: public Sized_dynobj
<size
, big_endian
>
388 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
390 Powerpc_dynobj(const std::string
& name
, Input_file
* input_file
, off_t offset
,
391 const typename
elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
392 : Sized_dynobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
),
393 opd_shndx_(0), opd_ent_(), e_flags_(ehdr
.get_e_flags())
395 this->set_abiversion(0);
401 // Call Sized_dynobj::do_read_symbols to read the symbols then
402 // read .opd from a dynamic object, filling in opd_ent_ vector,
404 do_read_symbols(Read_symbols_data
*);
406 // The .opd section shndx.
410 return this->opd_shndx_
;
413 // The .opd section address.
417 return this->opd_address_
;
420 // Init OPD entry arrays.
422 init_opd(size_t opd_size
)
424 size_t count
= this->opd_ent_ndx(opd_size
);
425 this->opd_ent_
.resize(count
);
428 // Return section and offset of function entry for .opd + R_OFF.
430 get_opd_ent(Address r_off
, Address
* value
= NULL
) const
432 size_t ndx
= this->opd_ent_ndx(r_off
);
433 gold_assert(ndx
< this->opd_ent_
.size());
434 gold_assert(this->opd_ent_
[ndx
].shndx
!= 0);
436 *value
= this->opd_ent_
[ndx
].off
;
437 return this->opd_ent_
[ndx
].shndx
;
440 // Set section and offset of function entry for .opd + R_OFF.
442 set_opd_ent(Address r_off
, unsigned int shndx
, Address value
)
444 size_t ndx
= this->opd_ent_ndx(r_off
);
445 gold_assert(ndx
< this->opd_ent_
.size());
446 this->opd_ent_
[ndx
].shndx
= shndx
;
447 this->opd_ent_
[ndx
].off
= value
;
452 { return this->e_flags_
& elfcpp::EF_PPC64_ABI
; }
454 // Set ABI version for input and output.
456 set_abiversion(int ver
);
459 // Used to specify extent of executable sections.
462 Sec_info(Address start_
, Address len_
, unsigned int shndx_
)
463 : start(start_
), len(len_
), shndx(shndx_
)
467 operator<(const Sec_info
& that
) const
468 { return this->start
< that
.start
; }
481 // Return index into opd_ent_ array for .opd entry at OFF.
483 opd_ent_ndx(size_t off
) const
486 // For 64-bit the .opd section shndx and address.
487 unsigned int opd_shndx_
;
488 Address opd_address_
;
490 // The first 8-byte word of an OPD entry gives the address of the
491 // entry point of the function. Records the section and offset
492 // corresponding to the address. Note that in dynamic objects,
493 // offset is *not* relative to the section.
494 std::vector
<Opd_ent
> opd_ent_
;
497 elfcpp::Elf_Word e_flags_
;
500 template<int size
, bool big_endian
>
501 class Target_powerpc
: public Sized_target
<size
, big_endian
>
505 Output_data_reloc
<elfcpp::SHT_RELA
, true, size
, big_endian
> Reloc_section
;
506 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
507 typedef typename
elfcpp::Elf_types
<size
>::Elf_Swxword Signed_address
;
508 static const Address invalid_address
= static_cast<Address
>(0) - 1;
509 // Offset of tp and dtp pointers from start of TLS block.
510 static const Address tp_offset
= 0x7000;
511 static const Address dtp_offset
= 0x8000;
514 : Sized_target
<size
, big_endian
>(&powerpc_info
),
515 got_(NULL
), plt_(NULL
), iplt_(NULL
), brlt_section_(NULL
),
516 glink_(NULL
), rela_dyn_(NULL
), copy_relocs_(elfcpp::R_POWERPC_COPY
),
517 tlsld_got_offset_(-1U),
518 stub_tables_(), branch_lookup_table_(), branch_info_(),
519 plt_thread_safe_(false), relax_failed_(false), relax_fail_count_(0),
520 stub_group_size_(0), savres_section_(0)
524 // Process the relocations to determine unreferenced sections for
525 // garbage collection.
527 gc_process_relocs(Symbol_table
* symtab
,
529 Sized_relobj_file
<size
, big_endian
>* object
,
530 unsigned int data_shndx
,
531 unsigned int sh_type
,
532 const unsigned char* prelocs
,
534 Output_section
* output_section
,
535 bool needs_special_offset_handling
,
536 size_t local_symbol_count
,
537 const unsigned char* plocal_symbols
);
539 // Scan the relocations to look for symbol adjustments.
541 scan_relocs(Symbol_table
* symtab
,
543 Sized_relobj_file
<size
, big_endian
>* object
,
544 unsigned int data_shndx
,
545 unsigned int sh_type
,
546 const unsigned char* prelocs
,
548 Output_section
* output_section
,
549 bool needs_special_offset_handling
,
550 size_t local_symbol_count
,
551 const unsigned char* plocal_symbols
);
553 // Map input .toc section to output .got section.
555 do_output_section_name(const Relobj
*, const char* name
, size_t* plen
) const
557 if (size
== 64 && strcmp(name
, ".toc") == 0)
565 // Provide linker defined save/restore functions.
567 define_save_restore_funcs(Layout
*, Symbol_table
*);
569 // No stubs unless a final link.
572 { return !parameters
->options().relocatable(); }
575 do_relax(int, const Input_objects
*, Symbol_table
*, Layout
*, const Task
*);
578 do_plt_fde_location(const Output_data
*, unsigned char*,
579 uint64_t*, off_t
*) const;
581 // Stash info about branches, for stub generation.
583 push_branch(Powerpc_relobj
<size
, big_endian
>* ppc_object
,
584 unsigned int data_shndx
, Address r_offset
,
585 unsigned int r_type
, unsigned int r_sym
, Address addend
)
587 Branch_info
info(ppc_object
, data_shndx
, r_offset
, r_type
, r_sym
, addend
);
588 this->branch_info_
.push_back(info
);
589 if (r_type
== elfcpp::R_POWERPC_REL14
590 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
591 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
)
592 ppc_object
->set_has_14bit_branch(data_shndx
);
596 do_define_standard_symbols(Symbol_table
*, Layout
*);
598 // Finalize the sections.
600 do_finalize_sections(Layout
*, const Input_objects
*, Symbol_table
*);
602 // Return the value to use for a dynamic which requires special
605 do_dynsym_value(const Symbol
*) const;
607 // Return the PLT address to use for a local symbol.
609 do_plt_address_for_local(const Relobj
*, unsigned int) const;
611 // Return the PLT address to use for a global symbol.
613 do_plt_address_for_global(const Symbol
*) const;
615 // Return the offset to use for the GOT_INDX'th got entry which is
616 // for a local tls symbol specified by OBJECT, SYMNDX.
618 do_tls_offset_for_local(const Relobj
* object
,
620 unsigned int got_indx
) const;
622 // Return the offset to use for the GOT_INDX'th got entry which is
623 // for global tls symbol GSYM.
625 do_tls_offset_for_global(Symbol
* gsym
, unsigned int got_indx
) const;
628 do_function_location(Symbol_location
*) const;
631 do_can_check_for_function_pointers() const
634 // Adjust -fsplit-stack code which calls non-split-stack code.
636 do_calls_non_split(Relobj
* object
, unsigned int shndx
,
637 section_offset_type fnoffset
, section_size_type fnsize
,
638 const unsigned char* prelocs
, size_t reloc_count
,
639 unsigned char* view
, section_size_type view_size
,
640 std::string
* from
, std::string
* to
) const;
642 // Relocate a section.
644 relocate_section(const Relocate_info
<size
, big_endian
>*,
645 unsigned int sh_type
,
646 const unsigned char* prelocs
,
648 Output_section
* output_section
,
649 bool needs_special_offset_handling
,
651 Address view_address
,
652 section_size_type view_size
,
653 const Reloc_symbol_changes
*);
655 // Scan the relocs during a relocatable link.
657 scan_relocatable_relocs(Symbol_table
* symtab
,
659 Sized_relobj_file
<size
, big_endian
>* object
,
660 unsigned int data_shndx
,
661 unsigned int sh_type
,
662 const unsigned char* prelocs
,
664 Output_section
* output_section
,
665 bool needs_special_offset_handling
,
666 size_t local_symbol_count
,
667 const unsigned char* plocal_symbols
,
668 Relocatable_relocs
*);
670 // Scan the relocs for --emit-relocs.
672 emit_relocs_scan(Symbol_table
* symtab
,
674 Sized_relobj_file
<size
, big_endian
>* object
,
675 unsigned int data_shndx
,
676 unsigned int sh_type
,
677 const unsigned char* prelocs
,
679 Output_section
* output_section
,
680 bool needs_special_offset_handling
,
681 size_t local_symbol_count
,
682 const unsigned char* plocal_syms
,
683 Relocatable_relocs
* rr
);
685 // Emit relocations for a section.
687 relocate_relocs(const Relocate_info
<size
, big_endian
>*,
688 unsigned int sh_type
,
689 const unsigned char* prelocs
,
691 Output_section
* output_section
,
692 typename
elfcpp::Elf_types
<size
>::Elf_Off
693 offset_in_output_section
,
695 Address view_address
,
697 unsigned char* reloc_view
,
698 section_size_type reloc_view_size
);
700 // Return whether SYM is defined by the ABI.
702 do_is_defined_by_abi(const Symbol
* sym
) const
704 return strcmp(sym
->name(), "__tls_get_addr") == 0;
707 // Return the size of the GOT section.
711 gold_assert(this->got_
!= NULL
);
712 return this->got_
->data_size();
715 // Get the PLT section.
716 const Output_data_plt_powerpc
<size
, big_endian
>*
719 gold_assert(this->plt_
!= NULL
);
723 // Get the IPLT section.
724 const Output_data_plt_powerpc
<size
, big_endian
>*
727 gold_assert(this->iplt_
!= NULL
);
731 // Get the .glink section.
732 const Output_data_glink
<size
, big_endian
>*
733 glink_section() const
735 gold_assert(this->glink_
!= NULL
);
739 Output_data_glink
<size
, big_endian
>*
742 gold_assert(this->glink_
!= NULL
);
746 bool has_glink() const
747 { return this->glink_
!= NULL
; }
749 // Get the GOT section.
750 const Output_data_got_powerpc
<size
, big_endian
>*
753 gold_assert(this->got_
!= NULL
);
757 // Get the GOT section, creating it if necessary.
758 Output_data_got_powerpc
<size
, big_endian
>*
759 got_section(Symbol_table
*, Layout
*);
762 do_make_elf_object(const std::string
&, Input_file
*, off_t
,
763 const elfcpp::Ehdr
<size
, big_endian
>&);
765 // Return the number of entries in the GOT.
767 got_entry_count() const
769 if (this->got_
== NULL
)
771 return this->got_size() / (size
/ 8);
774 // Return the number of entries in the PLT.
776 plt_entry_count() const;
778 // Return the offset of the first non-reserved PLT entry.
780 first_plt_entry_offset() const
784 if (this->abiversion() >= 2)
789 // Return the size of each PLT entry.
791 plt_entry_size() const
795 if (this->abiversion() >= 2)
800 Output_data_save_res
<size
, big_endian
>*
801 savres_section() const
803 return this->savres_section_
;
806 // Add any special sections for this symbol to the gc work list.
807 // For powerpc64, this adds the code section of a function
810 do_gc_mark_symbol(Symbol_table
* symtab
, Symbol
* sym
) const;
812 // Handle target specific gc actions when adding a gc reference from
813 // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX
814 // and DST_OFF. For powerpc64, this adds a referenc to the code
815 // section of a function descriptor.
817 do_gc_add_reference(Symbol_table
* symtab
,
819 unsigned int src_shndx
,
821 unsigned int dst_shndx
,
822 Address dst_off
) const;
824 typedef std::vector
<Stub_table
<size
, big_endian
>*> Stub_tables
;
827 { return this->stub_tables_
; }
829 const Output_data_brlt_powerpc
<size
, big_endian
>*
831 { return this->brlt_section_
; }
834 add_branch_lookup_table(Address to
)
836 unsigned int off
= this->branch_lookup_table_
.size() * (size
/ 8);
837 this->branch_lookup_table_
.insert(std::make_pair(to
, off
));
841 find_branch_lookup_table(Address to
)
843 typename
Branch_lookup_table::const_iterator p
844 = this->branch_lookup_table_
.find(to
);
845 return p
== this->branch_lookup_table_
.end() ? invalid_address
: p
->second
;
849 write_branch_lookup_table(unsigned char *oview
)
851 for (typename
Branch_lookup_table::const_iterator p
852 = this->branch_lookup_table_
.begin();
853 p
!= this->branch_lookup_table_
.end();
856 elfcpp::Swap
<size
, big_endian
>::writeval(oview
+ p
->second
, p
->first
);
861 plt_thread_safe() const
862 { return this->plt_thread_safe_
; }
866 { return this->processor_specific_flags() & elfcpp::EF_PPC64_ABI
; }
869 set_abiversion (int ver
)
871 elfcpp::Elf_Word flags
= this->processor_specific_flags();
872 flags
&= ~elfcpp::EF_PPC64_ABI
;
873 flags
|= ver
& elfcpp::EF_PPC64_ABI
;
874 this->set_processor_specific_flags(flags
);
877 // Offset to to save stack slot
880 { return this->abiversion() < 2 ? 40 : 24; }
896 : tls_get_addr_(NOT_EXPECTED
),
897 relinfo_(NULL
), relnum_(0), r_offset_(0)
902 if (this->tls_get_addr_
!= NOT_EXPECTED
)
909 if (this->relinfo_
!= NULL
)
910 gold_error_at_location(this->relinfo_
, this->relnum_
, this->r_offset_
,
911 _("missing expected __tls_get_addr call"));
915 expect_tls_get_addr_call(
916 const Relocate_info
<size
, big_endian
>* relinfo
,
920 this->tls_get_addr_
= EXPECTED
;
921 this->relinfo_
= relinfo
;
922 this->relnum_
= relnum
;
923 this->r_offset_
= r_offset
;
927 expect_tls_get_addr_call()
928 { this->tls_get_addr_
= EXPECTED
; }
931 skip_next_tls_get_addr_call()
932 {this->tls_get_addr_
= SKIP
; }
935 maybe_skip_tls_get_addr_call(unsigned int r_type
, const Symbol
* gsym
)
937 bool is_tls_call
= ((r_type
== elfcpp::R_POWERPC_REL24
938 || r_type
== elfcpp::R_PPC_PLTREL24
)
940 && strcmp(gsym
->name(), "__tls_get_addr") == 0);
941 Tls_get_addr last_tls
= this->tls_get_addr_
;
942 this->tls_get_addr_
= NOT_EXPECTED
;
943 if (is_tls_call
&& last_tls
!= EXPECTED
)
945 else if (!is_tls_call
&& last_tls
!= NOT_EXPECTED
)
954 // What we're up to regarding calls to __tls_get_addr.
955 // On powerpc, the branch and link insn making a call to
956 // __tls_get_addr is marked with a relocation, R_PPC64_TLSGD,
957 // R_PPC64_TLSLD, R_PPC_TLSGD or R_PPC_TLSLD, in addition to the
958 // usual R_POWERPC_REL24 or R_PPC_PLTREL25 relocation on a call.
959 // The marker relocation always comes first, and has the same
960 // symbol as the reloc on the insn setting up the __tls_get_addr
961 // argument. This ties the arg setup insn with the call insn,
962 // allowing ld to safely optimize away the call. We check that
963 // every call to __tls_get_addr has a marker relocation, and that
964 // every marker relocation is on a call to __tls_get_addr.
965 Tls_get_addr tls_get_addr_
;
966 // Info about the last reloc for error message.
967 const Relocate_info
<size
, big_endian
>* relinfo_
;
972 // The class which scans relocations.
973 class Scan
: protected Track_tls
976 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
979 : Track_tls(), issued_non_pic_error_(false)
983 get_reference_flags(unsigned int r_type
, const Target_powerpc
* target
);
986 local(Symbol_table
* symtab
, Layout
* layout
, Target_powerpc
* target
,
987 Sized_relobj_file
<size
, big_endian
>* object
,
988 unsigned int data_shndx
,
989 Output_section
* output_section
,
990 const elfcpp::Rela
<size
, big_endian
>& reloc
, unsigned int r_type
,
991 const elfcpp::Sym
<size
, big_endian
>& lsym
,
995 global(Symbol_table
* symtab
, Layout
* layout
, Target_powerpc
* target
,
996 Sized_relobj_file
<size
, big_endian
>* object
,
997 unsigned int data_shndx
,
998 Output_section
* output_section
,
999 const elfcpp::Rela
<size
, big_endian
>& reloc
, unsigned int r_type
,
1003 local_reloc_may_be_function_pointer(Symbol_table
* , Layout
* ,
1005 Sized_relobj_file
<size
, big_endian
>* relobj
,
1008 const elfcpp::Rela
<size
, big_endian
>& ,
1009 unsigned int r_type
,
1010 const elfcpp::Sym
<size
, big_endian
>&)
1012 // PowerPC64 .opd is not folded, so any identical function text
1013 // may be folded and we'll still keep function addresses distinct.
1014 // That means no reloc is of concern here.
1017 Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
1018 <Powerpc_relobj
<size
, big_endian
>*>(relobj
);
1019 if (ppcobj
->abiversion() == 1)
1022 // For 32-bit and ELFv2, conservatively assume anything but calls to
1023 // function code might be taking the address of the function.
1024 return !is_branch_reloc(r_type
);
1028 global_reloc_may_be_function_pointer(Symbol_table
* , Layout
* ,
1030 Sized_relobj_file
<size
, big_endian
>* relobj
,
1033 const elfcpp::Rela
<size
, big_endian
>& ,
1034 unsigned int r_type
,
1040 Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
1041 <Powerpc_relobj
<size
, big_endian
>*>(relobj
);
1042 if (ppcobj
->abiversion() == 1)
1045 return !is_branch_reloc(r_type
);
1049 reloc_needs_plt_for_ifunc(Target_powerpc
<size
, big_endian
>* target
,
1050 Sized_relobj_file
<size
, big_endian
>* object
,
1051 unsigned int r_type
, bool report_err
);
1055 unsupported_reloc_local(Sized_relobj_file
<size
, big_endian
>*,
1056 unsigned int r_type
);
1059 unsupported_reloc_global(Sized_relobj_file
<size
, big_endian
>*,
1060 unsigned int r_type
, Symbol
*);
1063 generate_tls_call(Symbol_table
* symtab
, Layout
* layout
,
1064 Target_powerpc
* target
);
1067 check_non_pic(Relobj
*, unsigned int r_type
);
1069 // Whether we have issued an error about a non-PIC compilation.
1070 bool issued_non_pic_error_
;
1074 symval_for_branch(const Symbol_table
* symtab
,
1075 const Sized_symbol
<size
>* gsym
,
1076 Powerpc_relobj
<size
, big_endian
>* object
,
1077 Address
*value
, unsigned int *dest_shndx
);
1079 // The class which implements relocation.
1080 class Relocate
: protected Track_tls
1083 // Use 'at' branch hints when true, 'y' when false.
1084 // FIXME maybe: set this with an option.
1085 static const bool is_isa_v2
= true;
1091 // Do a relocation. Return false if the caller should not issue
1092 // any warnings about this relocation.
1094 relocate(const Relocate_info
<size
, big_endian
>*, unsigned int,
1095 Target_powerpc
*, Output_section
*, size_t, const unsigned char*,
1096 const Sized_symbol
<size
>*, const Symbol_value
<size
>*,
1097 unsigned char*, typename
elfcpp::Elf_types
<size
>::Elf_Addr
,
1101 class Relocate_comdat_behavior
1104 // Decide what the linker should do for relocations that refer to
1105 // discarded comdat sections.
1106 inline Comdat_behavior
1107 get(const char* name
)
1109 gold::Default_comdat_behavior default_behavior
;
1110 Comdat_behavior ret
= default_behavior
.get(name
);
1111 if (ret
== CB_WARNING
)
1114 && (strcmp(name
, ".fixup") == 0
1115 || strcmp(name
, ".got2") == 0))
1118 && (strcmp(name
, ".opd") == 0
1119 || strcmp(name
, ".toc") == 0
1120 || strcmp(name
, ".toc1") == 0))
1127 // Optimize the TLS relocation type based on what we know about the
1128 // symbol. IS_FINAL is true if the final address of this symbol is
1129 // known at link time.
1131 tls::Tls_optimization
1132 optimize_tls_gd(bool is_final
)
1134 // If we are generating a shared library, then we can't do anything
1136 if (parameters
->options().shared())
1137 return tls::TLSOPT_NONE
;
1140 return tls::TLSOPT_TO_IE
;
1141 return tls::TLSOPT_TO_LE
;
1144 tls::Tls_optimization
1147 if (parameters
->options().shared())
1148 return tls::TLSOPT_NONE
;
1150 return tls::TLSOPT_TO_LE
;
1153 tls::Tls_optimization
1154 optimize_tls_ie(bool is_final
)
1156 if (!is_final
|| parameters
->options().shared())
1157 return tls::TLSOPT_NONE
;
1159 return tls::TLSOPT_TO_LE
;
1164 make_glink_section(Layout
*);
1166 // Create the PLT section.
1168 make_plt_section(Symbol_table
*, Layout
*);
1171 make_iplt_section(Symbol_table
*, Layout
*);
1174 make_brlt_section(Layout
*);
1176 // Create a PLT entry for a global symbol.
1178 make_plt_entry(Symbol_table
*, Layout
*, Symbol
*);
1180 // Create a PLT entry for a local IFUNC symbol.
1182 make_local_ifunc_plt_entry(Symbol_table
*, Layout
*,
1183 Sized_relobj_file
<size
, big_endian
>*,
1187 // Create a GOT entry for local dynamic __tls_get_addr.
1189 tlsld_got_offset(Symbol_table
* symtab
, Layout
* layout
,
1190 Sized_relobj_file
<size
, big_endian
>* object
);
1193 tlsld_got_offset() const
1195 return this->tlsld_got_offset_
;
1198 // Get the dynamic reloc section, creating it if necessary.
1200 rela_dyn_section(Layout
*);
1202 // Similarly, but for ifunc symbols get the one for ifunc.
1204 rela_dyn_section(Symbol_table
*, Layout
*, bool for_ifunc
);
1206 // Copy a relocation against a global symbol.
1208 copy_reloc(Symbol_table
* symtab
, Layout
* layout
,
1209 Sized_relobj_file
<size
, big_endian
>* object
,
1210 unsigned int shndx
, Output_section
* output_section
,
1211 Symbol
* sym
, const elfcpp::Rela
<size
, big_endian
>& reloc
)
1213 unsigned int r_type
= elfcpp::elf_r_type
<size
>(reloc
.get_r_info());
1214 this->copy_relocs_
.copy_reloc(symtab
, layout
,
1215 symtab
->get_sized_symbol
<size
>(sym
),
1216 object
, shndx
, output_section
,
1217 r_type
, reloc
.get_r_offset(),
1218 reloc
.get_r_addend(),
1219 this->rela_dyn_section(layout
));
1222 // Look over all the input sections, deciding where to place stubs.
1224 group_sections(Layout
*, const Task
*, bool);
1226 // Sort output sections by address.
1227 struct Sort_sections
1230 operator()(const Output_section
* sec1
, const Output_section
* sec2
)
1231 { return sec1
->address() < sec2
->address(); }
1237 Branch_info(Powerpc_relobj
<size
, big_endian
>* ppc_object
,
1238 unsigned int data_shndx
,
1240 unsigned int r_type
,
1243 : object_(ppc_object
), shndx_(data_shndx
), offset_(r_offset
),
1244 r_type_(r_type
), r_sym_(r_sym
), addend_(addend
)
1250 // If this branch needs a plt call stub, or a long branch stub, make one.
1252 make_stub(Stub_table
<size
, big_endian
>*,
1253 Stub_table
<size
, big_endian
>*,
1254 Symbol_table
*) const;
1257 // The branch location..
1258 Powerpc_relobj
<size
, big_endian
>* object_
;
1259 unsigned int shndx_
;
1261 // ..and the branch type and destination.
1262 unsigned int r_type_
;
1263 unsigned int r_sym_
;
1267 // Information about this specific target which we pass to the
1268 // general Target structure.
1269 static Target::Target_info powerpc_info
;
1271 // The types of GOT entries needed for this platform.
1272 // These values are exposed to the ABI in an incremental link.
1273 // Do not renumber existing values without changing the version
1274 // number of the .gnu_incremental_inputs section.
1278 GOT_TYPE_TLSGD
, // double entry for @got@tlsgd
1279 GOT_TYPE_DTPREL
, // entry for @got@dtprel
1280 GOT_TYPE_TPREL
// entry for @got@tprel
1284 Output_data_got_powerpc
<size
, big_endian
>* got_
;
1285 // The PLT section. This is a container for a table of addresses,
1286 // and their relocations. Each address in the PLT has a dynamic
1287 // relocation (R_*_JMP_SLOT) and each address will have a
1288 // corresponding entry in .glink for lazy resolution of the PLT.
1289 // ppc32 initialises the PLT to point at the .glink entry, while
1290 // ppc64 leaves this to ld.so. To make a call via the PLT, the
1291 // linker adds a stub that loads the PLT entry into ctr then
1292 // branches to ctr. There may be more than one stub for each PLT
1293 // entry. DT_JMPREL points at the first PLT dynamic relocation and
1294 // DT_PLTRELSZ gives the total size of PLT dynamic relocations.
1295 Output_data_plt_powerpc
<size
, big_endian
>* plt_
;
1296 // The IPLT section. Like plt_, this is a container for a table of
1297 // addresses and their relocations, specifically for STT_GNU_IFUNC
1298 // functions that resolve locally (STT_GNU_IFUNC functions that
1299 // don't resolve locally go in PLT). Unlike plt_, these have no
1300 // entry in .glink for lazy resolution, and the relocation section
1301 // does not have a 1-1 correspondence with IPLT addresses. In fact,
1302 // the relocation section may contain relocations against
1303 // STT_GNU_IFUNC symbols at locations outside of IPLT. The
1304 // relocation section will appear at the end of other dynamic
1305 // relocations, so that ld.so applies these relocations after other
1306 // dynamic relocations. In a static executable, the relocation
1307 // section is emitted and marked with __rela_iplt_start and
1308 // __rela_iplt_end symbols.
1309 Output_data_plt_powerpc
<size
, big_endian
>* iplt_
;
1310 // Section holding long branch destinations.
1311 Output_data_brlt_powerpc
<size
, big_endian
>* brlt_section_
;
1312 // The .glink section.
1313 Output_data_glink
<size
, big_endian
>* glink_
;
1314 // The dynamic reloc section.
1315 Reloc_section
* rela_dyn_
;
1316 // Relocs saved to avoid a COPY reloc.
1317 Copy_relocs
<elfcpp::SHT_RELA
, size
, big_endian
> copy_relocs_
;
1318 // Offset of the GOT entry for local dynamic __tls_get_addr calls.
1319 unsigned int tlsld_got_offset_
;
1321 Stub_tables stub_tables_
;
1322 typedef Unordered_map
<Address
, unsigned int> Branch_lookup_table
;
1323 Branch_lookup_table branch_lookup_table_
;
1325 typedef std::vector
<Branch_info
> Branches
;
1326 Branches branch_info_
;
1328 bool plt_thread_safe_
;
1331 int relax_fail_count_
;
1332 int32_t stub_group_size_
;
1334 Output_data_save_res
<size
, big_endian
> *savres_section_
;
1338 Target::Target_info Target_powerpc
<32, true>::powerpc_info
=
1341 true, // is_big_endian
1342 elfcpp::EM_PPC
, // machine_code
1343 false, // has_make_symbol
1344 false, // has_resolve
1345 false, // has_code_fill
1346 true, // is_default_stack_executable
1347 false, // can_icf_inline_merge_sections
1349 "/usr/lib/ld.so.1", // dynamic_linker
1350 0x10000000, // default_text_segment_address
1351 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1352 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1353 false, // isolate_execinstr
1355 elfcpp::SHN_UNDEF
, // small_common_shndx
1356 elfcpp::SHN_UNDEF
, // large_common_shndx
1357 0, // small_common_section_flags
1358 0, // large_common_section_flags
1359 NULL
, // attributes_section
1360 NULL
, // attributes_vendor
1361 "_start", // entry_symbol_name
1362 32, // hash_entry_size
1366 Target::Target_info Target_powerpc
<32, false>::powerpc_info
=
1369 false, // is_big_endian
1370 elfcpp::EM_PPC
, // machine_code
1371 false, // has_make_symbol
1372 false, // has_resolve
1373 false, // has_code_fill
1374 true, // is_default_stack_executable
1375 false, // can_icf_inline_merge_sections
1377 "/usr/lib/ld.so.1", // dynamic_linker
1378 0x10000000, // default_text_segment_address
1379 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1380 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1381 false, // isolate_execinstr
1383 elfcpp::SHN_UNDEF
, // small_common_shndx
1384 elfcpp::SHN_UNDEF
, // large_common_shndx
1385 0, // small_common_section_flags
1386 0, // large_common_section_flags
1387 NULL
, // attributes_section
1388 NULL
, // attributes_vendor
1389 "_start", // entry_symbol_name
1390 32, // hash_entry_size
1394 Target::Target_info Target_powerpc
<64, true>::powerpc_info
=
1397 true, // is_big_endian
1398 elfcpp::EM_PPC64
, // machine_code
1399 false, // has_make_symbol
1400 false, // has_resolve
1401 false, // has_code_fill
1402 true, // is_default_stack_executable
1403 false, // can_icf_inline_merge_sections
1405 "/usr/lib/ld.so.1", // dynamic_linker
1406 0x10000000, // default_text_segment_address
1407 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1408 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1409 false, // isolate_execinstr
1411 elfcpp::SHN_UNDEF
, // small_common_shndx
1412 elfcpp::SHN_UNDEF
, // large_common_shndx
1413 0, // small_common_section_flags
1414 0, // large_common_section_flags
1415 NULL
, // attributes_section
1416 NULL
, // attributes_vendor
1417 "_start", // entry_symbol_name
1418 32, // hash_entry_size
1422 Target::Target_info Target_powerpc
<64, false>::powerpc_info
=
1425 false, // is_big_endian
1426 elfcpp::EM_PPC64
, // machine_code
1427 false, // has_make_symbol
1428 false, // has_resolve
1429 false, // has_code_fill
1430 true, // is_default_stack_executable
1431 false, // can_icf_inline_merge_sections
1433 "/usr/lib/ld.so.1", // dynamic_linker
1434 0x10000000, // default_text_segment_address
1435 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1436 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1437 false, // isolate_execinstr
1439 elfcpp::SHN_UNDEF
, // small_common_shndx
1440 elfcpp::SHN_UNDEF
, // large_common_shndx
1441 0, // small_common_section_flags
1442 0, // large_common_section_flags
1443 NULL
, // attributes_section
1444 NULL
, // attributes_vendor
1445 "_start", // entry_symbol_name
1446 32, // hash_entry_size
1450 is_branch_reloc(unsigned int r_type
)
1452 return (r_type
== elfcpp::R_POWERPC_REL24
1453 || r_type
== elfcpp::R_PPC_PLTREL24
1454 || r_type
== elfcpp::R_PPC_LOCAL24PC
1455 || r_type
== elfcpp::R_POWERPC_REL14
1456 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
1457 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
1458 || r_type
== elfcpp::R_POWERPC_ADDR24
1459 || r_type
== elfcpp::R_POWERPC_ADDR14
1460 || r_type
== elfcpp::R_POWERPC_ADDR14_BRTAKEN
1461 || r_type
== elfcpp::R_POWERPC_ADDR14_BRNTAKEN
);
1464 // If INSN is an opcode that may be used with an @tls operand, return
1465 // the transformed insn for TLS optimisation, otherwise return 0. If
1466 // REG is non-zero only match an insn with RB or RA equal to REG.
1468 at_tls_transform(uint32_t insn
, unsigned int reg
)
1470 if ((insn
& (0x3f << 26)) != 31 << 26)
1474 if (reg
== 0 || ((insn
>> 11) & 0x1f) == reg
)
1475 rtra
= insn
& ((1 << 26) - (1 << 16));
1476 else if (((insn
>> 16) & 0x1f) == reg
)
1477 rtra
= (insn
& (0x1f << 21)) | ((insn
& (0x1f << 11)) << 5);
1481 if ((insn
& (0x3ff << 1)) == 266 << 1)
1484 else if ((insn
& (0x1f << 1)) == 23 << 1
1485 && ((insn
& (0x1f << 6)) < 14 << 6
1486 || ((insn
& (0x1f << 6)) >= 16 << 6
1487 && (insn
& (0x1f << 6)) < 24 << 6)))
1488 // load and store indexed -> dform
1489 insn
= (32 | ((insn
>> 6) & 0x1f)) << 26;
1490 else if ((insn
& (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
1491 // ldx, ldux, stdx, stdux -> ld, ldu, std, stdu
1492 insn
= ((58 | ((insn
>> 6) & 4)) << 26) | ((insn
>> 6) & 1);
1493 else if ((insn
& (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
1495 insn
= (58 << 26) | 2;
1503 template<int size
, bool big_endian
>
1504 class Powerpc_relocate_functions
1524 typedef Powerpc_relocate_functions
<size
, big_endian
> This
;
1525 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
1526 typedef typename
elfcpp::Elf_types
<size
>::Elf_Swxword SignedAddress
;
1528 template<int valsize
>
1530 has_overflow_signed(Address value
)
1532 // limit = 1 << (valsize - 1) without shift count exceeding size of type
1533 Address limit
= static_cast<Address
>(1) << ((valsize
- 1) >> 1);
1534 limit
<<= ((valsize
- 1) >> 1);
1535 limit
<<= ((valsize
- 1) - 2 * ((valsize
- 1) >> 1));
1536 return value
+ limit
> (limit
<< 1) - 1;
1539 template<int valsize
>
1541 has_overflow_unsigned(Address value
)
1543 Address limit
= static_cast<Address
>(1) << ((valsize
- 1) >> 1);
1544 limit
<<= ((valsize
- 1) >> 1);
1545 limit
<<= ((valsize
- 1) - 2 * ((valsize
- 1) >> 1));
1546 return value
> (limit
<< 1) - 1;
1549 template<int valsize
>
1551 has_overflow_bitfield(Address value
)
1553 return (has_overflow_unsigned
<valsize
>(value
)
1554 && has_overflow_signed
<valsize
>(value
));
1557 template<int valsize
>
1558 static inline Status
1559 overflowed(Address value
, Overflow_check overflow
)
1561 if (overflow
== CHECK_SIGNED
)
1563 if (has_overflow_signed
<valsize
>(value
))
1564 return STATUS_OVERFLOW
;
1566 else if (overflow
== CHECK_UNSIGNED
)
1568 if (has_overflow_unsigned
<valsize
>(value
))
1569 return STATUS_OVERFLOW
;
1571 else if (overflow
== CHECK_BITFIELD
)
1573 if (has_overflow_bitfield
<valsize
>(value
))
1574 return STATUS_OVERFLOW
;
1579 // Do a simple RELA relocation
1580 template<int fieldsize
, int valsize
>
1581 static inline Status
1582 rela(unsigned char* view
, Address value
, Overflow_check overflow
)
1584 typedef typename
elfcpp::Swap
<fieldsize
, big_endian
>::Valtype Valtype
;
1585 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
1586 elfcpp::Swap
<fieldsize
, big_endian
>::writeval(wv
, value
);
1587 return overflowed
<valsize
>(value
, overflow
);
1590 template<int fieldsize
, int valsize
>
1591 static inline Status
1592 rela(unsigned char* view
,
1593 unsigned int right_shift
,
1594 typename
elfcpp::Valtype_base
<fieldsize
>::Valtype dst_mask
,
1596 Overflow_check overflow
)
1598 typedef typename
elfcpp::Swap
<fieldsize
, big_endian
>::Valtype Valtype
;
1599 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
1600 Valtype val
= elfcpp::Swap
<fieldsize
, big_endian
>::readval(wv
);
1601 Valtype reloc
= value
>> right_shift
;
1604 elfcpp::Swap
<fieldsize
, big_endian
>::writeval(wv
, val
| reloc
);
1605 return overflowed
<valsize
>(value
>> right_shift
, overflow
);
1608 // Do a simple RELA relocation, unaligned.
1609 template<int fieldsize
, int valsize
>
1610 static inline Status
1611 rela_ua(unsigned char* view
, Address value
, Overflow_check overflow
)
1613 elfcpp::Swap_unaligned
<fieldsize
, big_endian
>::writeval(view
, value
);
1614 return overflowed
<valsize
>(value
, overflow
);
1617 template<int fieldsize
, int valsize
>
1618 static inline Status
1619 rela_ua(unsigned char* view
,
1620 unsigned int right_shift
,
1621 typename
elfcpp::Valtype_base
<fieldsize
>::Valtype dst_mask
,
1623 Overflow_check overflow
)
1625 typedef typename
elfcpp::Swap_unaligned
<fieldsize
, big_endian
>::Valtype
1627 Valtype val
= elfcpp::Swap
<fieldsize
, big_endian
>::readval(view
);
1628 Valtype reloc
= value
>> right_shift
;
1631 elfcpp::Swap_unaligned
<fieldsize
, big_endian
>::writeval(view
, val
| reloc
);
1632 return overflowed
<valsize
>(value
>> right_shift
, overflow
);
1636 // R_PPC64_ADDR64: (Symbol + Addend)
1638 addr64(unsigned char* view
, Address value
)
1639 { This::template rela
<64,64>(view
, value
, CHECK_NONE
); }
1641 // R_PPC64_UADDR64: (Symbol + Addend) unaligned
1643 addr64_u(unsigned char* view
, Address value
)
1644 { This::template rela_ua
<64,64>(view
, value
, CHECK_NONE
); }
1646 // R_POWERPC_ADDR32: (Symbol + Addend)
1647 static inline Status
1648 addr32(unsigned char* view
, Address value
, Overflow_check overflow
)
1649 { return This::template rela
<32,32>(view
, value
, overflow
); }
1651 // R_POWERPC_UADDR32: (Symbol + Addend) unaligned
1652 static inline Status
1653 addr32_u(unsigned char* view
, Address value
, Overflow_check overflow
)
1654 { return This::template rela_ua
<32,32>(view
, value
, overflow
); }
1656 // R_POWERPC_ADDR24: (Symbol + Addend) & 0x3fffffc
1657 static inline Status
1658 addr24(unsigned char* view
, Address value
, Overflow_check overflow
)
1660 Status stat
= This::template rela
<32,26>(view
, 0, 0x03fffffc,
1662 if (overflow
!= CHECK_NONE
&& (value
& 3) != 0)
1663 stat
= STATUS_OVERFLOW
;
1667 // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff
1668 static inline Status
1669 addr16(unsigned char* view
, Address value
, Overflow_check overflow
)
1670 { return This::template rela
<16,16>(view
, value
, overflow
); }
1672 // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff, unaligned
1673 static inline Status
1674 addr16_u(unsigned char* view
, Address value
, Overflow_check overflow
)
1675 { return This::template rela_ua
<16,16>(view
, value
, overflow
); }
1677 // R_POWERPC_ADDR16_DS: (Symbol + Addend) & 0xfffc
1678 static inline Status
1679 addr16_ds(unsigned char* view
, Address value
, Overflow_check overflow
)
1681 Status stat
= This::template rela
<16,16>(view
, 0, 0xfffc, value
, overflow
);
1682 if ((value
& 3) != 0)
1683 stat
= STATUS_OVERFLOW
;
1687 // R_POWERPC_ADDR16_DQ: (Symbol + Addend) & 0xfff0
1688 static inline Status
1689 addr16_dq(unsigned char* view
, Address value
, Overflow_check overflow
)
1691 Status stat
= This::template rela
<16,16>(view
, 0, 0xfff0, value
, overflow
);
1692 if ((value
& 15) != 0)
1693 stat
= STATUS_OVERFLOW
;
1697 // R_POWERPC_ADDR16_HI: ((Symbol + Addend) >> 16) & 0xffff
1699 addr16_hi(unsigned char* view
, Address value
)
1700 { This::template rela
<16,16>(view
, 16, 0xffff, value
, CHECK_NONE
); }
1702 // R_POWERPC_ADDR16_HA: ((Symbol + Addend + 0x8000) >> 16) & 0xffff
1704 addr16_ha(unsigned char* view
, Address value
)
1705 { This::addr16_hi(view
, value
+ 0x8000); }
1707 // R_POWERPC_ADDR16_HIGHER: ((Symbol + Addend) >> 32) & 0xffff
1709 addr16_hi2(unsigned char* view
, Address value
)
1710 { This::template rela
<16,16>(view
, 32, 0xffff, value
, CHECK_NONE
); }
1712 // R_POWERPC_ADDR16_HIGHERA: ((Symbol + Addend + 0x8000) >> 32) & 0xffff
1714 addr16_ha2(unsigned char* view
, Address value
)
1715 { This::addr16_hi2(view
, value
+ 0x8000); }
1717 // R_POWERPC_ADDR16_HIGHEST: ((Symbol + Addend) >> 48) & 0xffff
1719 addr16_hi3(unsigned char* view
, Address value
)
1720 { This::template rela
<16,16>(view
, 48, 0xffff, value
, CHECK_NONE
); }
1722 // R_POWERPC_ADDR16_HIGHESTA: ((Symbol + Addend + 0x8000) >> 48) & 0xffff
1724 addr16_ha3(unsigned char* view
, Address value
)
1725 { This::addr16_hi3(view
, value
+ 0x8000); }
1727 // R_POWERPC_ADDR14: (Symbol + Addend) & 0xfffc
1728 static inline Status
1729 addr14(unsigned char* view
, Address value
, Overflow_check overflow
)
1731 Status stat
= This::template rela
<32,16>(view
, 0, 0xfffc, value
, overflow
);
1732 if (overflow
!= CHECK_NONE
&& (value
& 3) != 0)
1733 stat
= STATUS_OVERFLOW
;
1737 // R_POWERPC_REL16DX_HA
1738 static inline Status
1739 addr16dx_ha(unsigned char *view
, Address value
, Overflow_check overflow
)
1741 typedef typename
elfcpp::Swap
<32, big_endian
>::Valtype Valtype
;
1742 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
1743 Valtype val
= elfcpp::Swap
<32, big_endian
>::readval(wv
);
1745 value
= static_cast<SignedAddress
>(value
) >> 16;
1746 val
|= (value
& 0xffc1) | ((value
& 0x3e) << 15);
1747 elfcpp::Swap
<32, big_endian
>::writeval(wv
, val
);
1748 return overflowed
<16>(value
, overflow
);
1752 // Set ABI version for input and output.
1754 template<int size
, bool big_endian
>
1756 Powerpc_relobj
<size
, big_endian
>::set_abiversion(int ver
)
1758 this->e_flags_
|= ver
;
1759 if (this->abiversion() != 0)
1761 Target_powerpc
<size
, big_endian
>* target
=
1762 static_cast<Target_powerpc
<size
, big_endian
>*>(
1763 parameters
->sized_target
<size
, big_endian
>());
1764 if (target
->abiversion() == 0)
1765 target
->set_abiversion(this->abiversion());
1766 else if (target
->abiversion() != this->abiversion())
1767 gold_error(_("%s: ABI version %d is not compatible "
1768 "with ABI version %d output"),
1769 this->name().c_str(),
1770 this->abiversion(), target
->abiversion());
1775 // Stash away the index of .got2 or .opd in a relocatable object, if
1776 // such a section exists.
1778 template<int size
, bool big_endian
>
1780 Powerpc_relobj
<size
, big_endian
>::do_find_special_sections(
1781 Read_symbols_data
* sd
)
1783 const unsigned char* const pshdrs
= sd
->section_headers
->data();
1784 const unsigned char* namesu
= sd
->section_names
->data();
1785 const char* names
= reinterpret_cast<const char*>(namesu
);
1786 section_size_type names_size
= sd
->section_names_size
;
1787 const unsigned char* s
;
1789 s
= this->template find_shdr
<size
, big_endian
>(pshdrs
,
1790 size
== 32 ? ".got2" : ".opd",
1791 names
, names_size
, NULL
);
1794 unsigned int ndx
= (s
- pshdrs
) / elfcpp::Elf_sizes
<size
>::shdr_size
;
1795 this->special_
= ndx
;
1798 if (this->abiversion() == 0)
1799 this->set_abiversion(1);
1800 else if (this->abiversion() > 1)
1801 gold_error(_("%s: .opd invalid in abiv%d"),
1802 this->name().c_str(), this->abiversion());
1805 return Sized_relobj_file
<size
, big_endian
>::do_find_special_sections(sd
);
1808 // Examine .rela.opd to build info about function entry points.
1810 template<int size
, bool big_endian
>
1812 Powerpc_relobj
<size
, big_endian
>::scan_opd_relocs(
1814 const unsigned char* prelocs
,
1815 const unsigned char* plocal_syms
)
1819 typedef typename Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::Reloc
1821 const int reloc_size
1822 = Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
1823 const int sym_size
= elfcpp::Elf_sizes
<size
>::sym_size
;
1824 Address expected_off
= 0;
1825 bool regular
= true;
1826 unsigned int opd_ent_size
= 0;
1828 for (size_t i
= 0; i
< reloc_count
; ++i
, prelocs
+= reloc_size
)
1830 Reltype
reloc(prelocs
);
1831 typename
elfcpp::Elf_types
<size
>::Elf_WXword r_info
1832 = reloc
.get_r_info();
1833 unsigned int r_type
= elfcpp::elf_r_type
<size
>(r_info
);
1834 if (r_type
== elfcpp::R_PPC64_ADDR64
)
1836 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(r_info
);
1837 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
;
1840 if (r_sym
< this->local_symbol_count())
1842 typename
elfcpp::Sym
<size
, big_endian
>
1843 lsym(plocal_syms
+ r_sym
* sym_size
);
1844 shndx
= lsym
.get_st_shndx();
1845 shndx
= this->adjust_sym_shndx(r_sym
, shndx
, &is_ordinary
);
1846 value
= lsym
.get_st_value();
1849 shndx
= this->symbol_section_and_value(r_sym
, &value
,
1851 this->set_opd_ent(reloc
.get_r_offset(), shndx
,
1852 value
+ reloc
.get_r_addend());
1855 expected_off
= reloc
.get_r_offset();
1856 opd_ent_size
= expected_off
;
1858 else if (expected_off
!= reloc
.get_r_offset())
1860 expected_off
+= opd_ent_size
;
1862 else if (r_type
== elfcpp::R_PPC64_TOC
)
1864 if (expected_off
- opd_ent_size
+ 8 != reloc
.get_r_offset())
1869 gold_warning(_("%s: unexpected reloc type %u in .opd section"),
1870 this->name().c_str(), r_type
);
1874 if (reloc_count
<= 2)
1875 opd_ent_size
= this->section_size(this->opd_shndx());
1876 if (opd_ent_size
!= 24 && opd_ent_size
!= 16)
1880 gold_warning(_("%s: .opd is not a regular array of opd entries"),
1881 this->name().c_str());
1887 template<int size
, bool big_endian
>
1889 Powerpc_relobj
<size
, big_endian
>::do_read_relocs(Read_relocs_data
* rd
)
1891 Sized_relobj_file
<size
, big_endian
>::do_read_relocs(rd
);
1894 for (Read_relocs_data::Relocs_list::iterator p
= rd
->relocs
.begin();
1895 p
!= rd
->relocs
.end();
1898 if (p
->data_shndx
== this->opd_shndx())
1900 uint64_t opd_size
= this->section_size(this->opd_shndx());
1901 gold_assert(opd_size
== static_cast<size_t>(opd_size
));
1904 this->init_opd(opd_size
);
1905 this->scan_opd_relocs(p
->reloc_count
, p
->contents
->data(),
1906 rd
->local_symbols
->data());
1914 // Read the symbols then set up st_other vector.
1916 template<int size
, bool big_endian
>
1918 Powerpc_relobj
<size
, big_endian
>::do_read_symbols(Read_symbols_data
* sd
)
1920 this->base_read_symbols(sd
);
1923 const int shdr_size
= elfcpp::Elf_sizes
<size
>::shdr_size
;
1924 const unsigned char* const pshdrs
= sd
->section_headers
->data();
1925 const unsigned int loccount
= this->do_local_symbol_count();
1928 this->st_other_
.resize(loccount
);
1929 const int sym_size
= elfcpp::Elf_sizes
<size
>::sym_size
;
1930 off_t locsize
= loccount
* sym_size
;
1931 const unsigned int symtab_shndx
= this->symtab_shndx();
1932 const unsigned char *psymtab
= pshdrs
+ symtab_shndx
* shdr_size
;
1933 typename
elfcpp::Shdr
<size
, big_endian
> shdr(psymtab
);
1934 const unsigned char* psyms
= this->get_view(shdr
.get_sh_offset(),
1935 locsize
, true, false);
1937 for (unsigned int i
= 1; i
< loccount
; ++i
, psyms
+= sym_size
)
1939 elfcpp::Sym
<size
, big_endian
> sym(psyms
);
1940 unsigned char st_other
= sym
.get_st_other();
1941 this->st_other_
[i
] = st_other
;
1942 if ((st_other
& elfcpp::STO_PPC64_LOCAL_MASK
) != 0)
1944 if (this->abiversion() == 0)
1945 this->set_abiversion(2);
1946 else if (this->abiversion() < 2)
1947 gold_error(_("%s: local symbol %d has invalid st_other"
1948 " for ABI version 1"),
1949 this->name().c_str(), i
);
1956 template<int size
, bool big_endian
>
1958 Powerpc_dynobj
<size
, big_endian
>::set_abiversion(int ver
)
1960 this->e_flags_
|= ver
;
1961 if (this->abiversion() != 0)
1963 Target_powerpc
<size
, big_endian
>* target
=
1964 static_cast<Target_powerpc
<size
, big_endian
>*>(
1965 parameters
->sized_target
<size
, big_endian
>());
1966 if (target
->abiversion() == 0)
1967 target
->set_abiversion(this->abiversion());
1968 else if (target
->abiversion() != this->abiversion())
1969 gold_error(_("%s: ABI version %d is not compatible "
1970 "with ABI version %d output"),
1971 this->name().c_str(),
1972 this->abiversion(), target
->abiversion());
1977 // Call Sized_dynobj::base_read_symbols to read the symbols then
1978 // read .opd from a dynamic object, filling in opd_ent_ vector,
1980 template<int size
, bool big_endian
>
1982 Powerpc_dynobj
<size
, big_endian
>::do_read_symbols(Read_symbols_data
* sd
)
1984 this->base_read_symbols(sd
);
1987 const int shdr_size
= elfcpp::Elf_sizes
<size
>::shdr_size
;
1988 const unsigned char* const pshdrs
= sd
->section_headers
->data();
1989 const unsigned char* namesu
= sd
->section_names
->data();
1990 const char* names
= reinterpret_cast<const char*>(namesu
);
1991 const unsigned char* s
= NULL
;
1992 const unsigned char* opd
;
1993 section_size_type opd_size
;
1995 // Find and read .opd section.
1998 s
= this->template find_shdr
<size
, big_endian
>(pshdrs
, ".opd", names
,
1999 sd
->section_names_size
,
2004 typename
elfcpp::Shdr
<size
, big_endian
> shdr(s
);
2005 if (shdr
.get_sh_type() == elfcpp::SHT_PROGBITS
2006 && (shdr
.get_sh_flags() & elfcpp::SHF_ALLOC
) != 0)
2008 if (this->abiversion() == 0)
2009 this->set_abiversion(1);
2010 else if (this->abiversion() > 1)
2011 gold_error(_("%s: .opd invalid in abiv%d"),
2012 this->name().c_str(), this->abiversion());
2014 this->opd_shndx_
= (s
- pshdrs
) / shdr_size
;
2015 this->opd_address_
= shdr
.get_sh_addr();
2016 opd_size
= convert_to_section_size_type(shdr
.get_sh_size());
2017 opd
= this->get_view(shdr
.get_sh_offset(), opd_size
,
2023 // Build set of executable sections.
2024 // Using a set is probably overkill. There is likely to be only
2025 // a few executable sections, typically .init, .text and .fini,
2026 // and they are generally grouped together.
2027 typedef std::set
<Sec_info
> Exec_sections
;
2028 Exec_sections exec_sections
;
2030 for (unsigned int i
= 1; i
< this->shnum(); ++i
, s
+= shdr_size
)
2032 typename
elfcpp::Shdr
<size
, big_endian
> shdr(s
);
2033 if (shdr
.get_sh_type() == elfcpp::SHT_PROGBITS
2034 && ((shdr
.get_sh_flags()
2035 & (elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
))
2036 == (elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
))
2037 && shdr
.get_sh_size() != 0)
2039 exec_sections
.insert(Sec_info(shdr
.get_sh_addr(),
2040 shdr
.get_sh_size(), i
));
2043 if (exec_sections
.empty())
2046 // Look over the OPD entries. This is complicated by the fact
2047 // that some binaries will use two-word entries while others
2048 // will use the standard three-word entries. In most cases
2049 // the third word (the environment pointer for languages like
2050 // Pascal) is unused and will be zero. If the third word is
2051 // used it should not be pointing into executable sections,
2053 this->init_opd(opd_size
);
2054 for (const unsigned char* p
= opd
; p
< opd
+ opd_size
; p
+= 8)
2056 typedef typename
elfcpp::Swap
<64, big_endian
>::Valtype Valtype
;
2057 const Valtype
* valp
= reinterpret_cast<const Valtype
*>(p
);
2058 Valtype val
= elfcpp::Swap
<64, big_endian
>::readval(valp
);
2060 // Chances are that this is the third word of an OPD entry.
2062 typename
Exec_sections::const_iterator e
2063 = exec_sections
.upper_bound(Sec_info(val
, 0, 0));
2064 if (e
!= exec_sections
.begin())
2067 if (e
->start
<= val
&& val
< e
->start
+ e
->len
)
2069 // We have an address in an executable section.
2070 // VAL ought to be the function entry, set it up.
2071 this->set_opd_ent(p
- opd
, e
->shndx
, val
);
2072 // Skip second word of OPD entry, the TOC pointer.
2076 // If we didn't match any executable sections, we likely
2077 // have a non-zero third word in the OPD entry.
2082 // Set up some symbols.
2084 template<int size
, bool big_endian
>
2086 Target_powerpc
<size
, big_endian
>::do_define_standard_symbols(
2087 Symbol_table
* symtab
,
2092 // Define _GLOBAL_OFFSET_TABLE_ to ensure it isn't seen as
2093 // undefined when scanning relocs (and thus requires
2094 // non-relative dynamic relocs). The proper value will be
2096 Symbol
*gotsym
= symtab
->lookup("_GLOBAL_OFFSET_TABLE_", NULL
);
2097 if (gotsym
!= NULL
&& gotsym
->is_undefined())
2099 Target_powerpc
<size
, big_endian
>* target
=
2100 static_cast<Target_powerpc
<size
, big_endian
>*>(
2101 parameters
->sized_target
<size
, big_endian
>());
2102 Output_data_got_powerpc
<size
, big_endian
>* got
2103 = target
->got_section(symtab
, layout
);
2104 symtab
->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL
,
2105 Symbol_table::PREDEFINED
,
2109 elfcpp::STV_HIDDEN
, 0,
2113 // Define _SDA_BASE_ at the start of the .sdata section + 32768.
2114 Symbol
*sdasym
= symtab
->lookup("_SDA_BASE_", NULL
);
2115 if (sdasym
!= NULL
&& sdasym
->is_undefined())
2117 Output_data_space
* sdata
= new Output_data_space(4, "** sdata");
2119 = layout
->add_output_section_data(".sdata", 0,
2121 | elfcpp::SHF_WRITE
,
2122 sdata
, ORDER_SMALL_DATA
, false);
2123 symtab
->define_in_output_data("_SDA_BASE_", NULL
,
2124 Symbol_table::PREDEFINED
,
2125 os
, 32768, 0, elfcpp::STT_OBJECT
,
2126 elfcpp::STB_LOCAL
, elfcpp::STV_HIDDEN
,
2132 // Define .TOC. as for 32-bit _GLOBAL_OFFSET_TABLE_
2133 Symbol
*gotsym
= symtab
->lookup(".TOC.", NULL
);
2134 if (gotsym
!= NULL
&& gotsym
->is_undefined())
2136 Target_powerpc
<size
, big_endian
>* target
=
2137 static_cast<Target_powerpc
<size
, big_endian
>*>(
2138 parameters
->sized_target
<size
, big_endian
>());
2139 Output_data_got_powerpc
<size
, big_endian
>* got
2140 = target
->got_section(symtab
, layout
);
2141 symtab
->define_in_output_data(".TOC.", NULL
,
2142 Symbol_table::PREDEFINED
,
2146 elfcpp::STV_HIDDEN
, 0,
2152 // Set up PowerPC target specific relobj.
2154 template<int size
, bool big_endian
>
2156 Target_powerpc
<size
, big_endian
>::do_make_elf_object(
2157 const std::string
& name
,
2158 Input_file
* input_file
,
2159 off_t offset
, const elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
2161 int et
= ehdr
.get_e_type();
2162 // ET_EXEC files are valid input for --just-symbols/-R,
2163 // and we treat them as relocatable objects.
2164 if (et
== elfcpp::ET_REL
2165 || (et
== elfcpp::ET_EXEC
&& input_file
->just_symbols()))
2167 Powerpc_relobj
<size
, big_endian
>* obj
=
2168 new Powerpc_relobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
);
2172 else if (et
== elfcpp::ET_DYN
)
2174 Powerpc_dynobj
<size
, big_endian
>* obj
=
2175 new Powerpc_dynobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
);
2181 gold_error(_("%s: unsupported ELF file type %d"), name
.c_str(), et
);
2186 template<int size
, bool big_endian
>
2187 class Output_data_got_powerpc
: public Output_data_got
<size
, big_endian
>
2190 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Valtype
;
2191 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true, size
, big_endian
> Rela_dyn
;
2193 Output_data_got_powerpc(Symbol_table
* symtab
, Layout
* layout
)
2194 : Output_data_got
<size
, big_endian
>(),
2195 symtab_(symtab
), layout_(layout
),
2196 header_ent_cnt_(size
== 32 ? 3 : 1),
2197 header_index_(size
== 32 ? 0x2000 : 0)
2200 this->set_addralign(256);
2203 // Override all the Output_data_got methods we use so as to first call
2206 add_global(Symbol
* gsym
, unsigned int got_type
)
2208 this->reserve_ent();
2209 return Output_data_got
<size
, big_endian
>::add_global(gsym
, got_type
);
2213 add_global_plt(Symbol
* gsym
, unsigned int got_type
)
2215 this->reserve_ent();
2216 return Output_data_got
<size
, big_endian
>::add_global_plt(gsym
, got_type
);
2220 add_global_tls(Symbol
* gsym
, unsigned int got_type
)
2221 { return this->add_global_plt(gsym
, got_type
); }
2224 add_global_with_rel(Symbol
* gsym
, unsigned int got_type
,
2225 Output_data_reloc_generic
* rel_dyn
, unsigned int r_type
)
2227 this->reserve_ent();
2228 Output_data_got
<size
, big_endian
>::
2229 add_global_with_rel(gsym
, got_type
, rel_dyn
, r_type
);
2233 add_global_pair_with_rel(Symbol
* gsym
, unsigned int got_type
,
2234 Output_data_reloc_generic
* rel_dyn
,
2235 unsigned int r_type_1
, unsigned int r_type_2
)
2237 this->reserve_ent(2);
2238 Output_data_got
<size
, big_endian
>::
2239 add_global_pair_with_rel(gsym
, got_type
, rel_dyn
, r_type_1
, r_type_2
);
2243 add_local(Relobj
* object
, unsigned int sym_index
, unsigned int got_type
)
2245 this->reserve_ent();
2246 return Output_data_got
<size
, big_endian
>::add_local(object
, sym_index
,
2251 add_local_plt(Relobj
* object
, unsigned int sym_index
, unsigned int got_type
)
2253 this->reserve_ent();
2254 return Output_data_got
<size
, big_endian
>::add_local_plt(object
, sym_index
,
2259 add_local_tls(Relobj
* object
, unsigned int sym_index
, unsigned int got_type
)
2260 { return this->add_local_plt(object
, sym_index
, got_type
); }
2263 add_local_tls_pair(Relobj
* object
, unsigned int sym_index
,
2264 unsigned int got_type
,
2265 Output_data_reloc_generic
* rel_dyn
,
2266 unsigned int r_type
)
2268 this->reserve_ent(2);
2269 Output_data_got
<size
, big_endian
>::
2270 add_local_tls_pair(object
, sym_index
, got_type
, rel_dyn
, r_type
);
2274 add_constant(Valtype constant
)
2276 this->reserve_ent();
2277 return Output_data_got
<size
, big_endian
>::add_constant(constant
);
2281 add_constant_pair(Valtype c1
, Valtype c2
)
2283 this->reserve_ent(2);
2284 return Output_data_got
<size
, big_endian
>::add_constant_pair(c1
, c2
);
2287 // Offset of _GLOBAL_OFFSET_TABLE_.
2291 return this->got_offset(this->header_index_
);
2294 // Offset of base used to access the GOT/TOC.
2295 // The got/toc pointer reg will be set to this value.
2297 got_base_offset(const Powerpc_relobj
<size
, big_endian
>* object
) const
2300 return this->g_o_t();
2302 return (this->output_section()->address()
2303 + object
->toc_base_offset()
2307 // Ensure our GOT has a header.
2309 set_final_data_size()
2311 if (this->header_ent_cnt_
!= 0)
2312 this->make_header();
2313 Output_data_got
<size
, big_endian
>::set_final_data_size();
2316 // First word of GOT header needs some values that are not
2317 // handled by Output_data_got so poke them in here.
2318 // For 32-bit, address of .dynamic, for 64-bit, address of TOCbase.
2320 do_write(Output_file
* of
)
2323 if (size
== 32 && this->layout_
->dynamic_data() != NULL
)
2324 val
= this->layout_
->dynamic_section()->address();
2326 val
= this->output_section()->address() + 0x8000;
2327 this->replace_constant(this->header_index_
, val
);
2328 Output_data_got
<size
, big_endian
>::do_write(of
);
2333 reserve_ent(unsigned int cnt
= 1)
2335 if (this->header_ent_cnt_
== 0)
2337 if (this->num_entries() + cnt
> this->header_index_
)
2338 this->make_header();
2344 this->header_ent_cnt_
= 0;
2345 this->header_index_
= this->num_entries();
2348 Output_data_got
<size
, big_endian
>::add_constant(0);
2349 Output_data_got
<size
, big_endian
>::add_constant(0);
2350 Output_data_got
<size
, big_endian
>::add_constant(0);
2352 // Define _GLOBAL_OFFSET_TABLE_ at the header
2353 Symbol
*gotsym
= this->symtab_
->lookup("_GLOBAL_OFFSET_TABLE_", NULL
);
2356 Sized_symbol
<size
>* sym
= static_cast<Sized_symbol
<size
>*>(gotsym
);
2357 sym
->set_value(this->g_o_t());
2360 this->symtab_
->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL
,
2361 Symbol_table::PREDEFINED
,
2362 this, this->g_o_t(), 0,
2365 elfcpp::STV_HIDDEN
, 0,
2369 Output_data_got
<size
, big_endian
>::add_constant(0);
2372 // Stashed pointers.
2373 Symbol_table
* symtab_
;
2377 unsigned int header_ent_cnt_
;
2378 // GOT header index.
2379 unsigned int header_index_
;
2382 // Get the GOT section, creating it if necessary.
2384 template<int size
, bool big_endian
>
2385 Output_data_got_powerpc
<size
, big_endian
>*
2386 Target_powerpc
<size
, big_endian
>::got_section(Symbol_table
* symtab
,
2389 if (this->got_
== NULL
)
2391 gold_assert(symtab
!= NULL
&& layout
!= NULL
);
2394 = new Output_data_got_powerpc
<size
, big_endian
>(symtab
, layout
);
2396 layout
->add_output_section_data(".got", elfcpp::SHT_PROGBITS
,
2397 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
2398 this->got_
, ORDER_DATA
, false);
2404 // Get the dynamic reloc section, creating it if necessary.
2406 template<int size
, bool big_endian
>
2407 typename Target_powerpc
<size
, big_endian
>::Reloc_section
*
2408 Target_powerpc
<size
, big_endian
>::rela_dyn_section(Layout
* layout
)
2410 if (this->rela_dyn_
== NULL
)
2412 gold_assert(layout
!= NULL
);
2413 this->rela_dyn_
= new Reloc_section(parameters
->options().combreloc());
2414 layout
->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA
,
2415 elfcpp::SHF_ALLOC
, this->rela_dyn_
,
2416 ORDER_DYNAMIC_RELOCS
, false);
2418 return this->rela_dyn_
;
2421 // Similarly, but for ifunc symbols get the one for ifunc.
2423 template<int size
, bool big_endian
>
2424 typename Target_powerpc
<size
, big_endian
>::Reloc_section
*
2425 Target_powerpc
<size
, big_endian
>::rela_dyn_section(Symbol_table
* symtab
,
2430 return this->rela_dyn_section(layout
);
2432 if (this->iplt_
== NULL
)
2433 this->make_iplt_section(symtab
, layout
);
2434 return this->iplt_
->rel_plt();
2440 // Determine the stub group size. The group size is the absolute
2441 // value of the parameter --stub-group-size. If --stub-group-size
2442 // is passed a negative value, we restrict stubs to be always after
2443 // the stubbed branches.
2444 Stub_control(int32_t size
, bool no_size_errors
)
2445 : state_(NO_GROUP
), stub_group_size_(abs(size
)),
2446 stubs_always_after_branch_(size
< 0),
2447 suppress_size_errors_(no_size_errors
), group_size_(0),
2448 group_start_addr_(0), owner_(NULL
), output_section_(NULL
)
2452 // Return true iff input section can be handled by current stub
2455 can_add_to_stub_group(Output_section
* o
,
2456 const Output_section::Input_section
* i
,
2459 const Output_section::Input_section
*
2465 { return output_section_
; }
2468 set_output_and_owner(Output_section
* o
,
2469 const Output_section::Input_section
* i
)
2471 this->output_section_
= o
;
2479 FINDING_STUB_SECTION
,
2484 uint32_t stub_group_size_
;
2485 bool stubs_always_after_branch_
;
2486 bool suppress_size_errors_
;
2487 // Current max size of group. Starts at stub_group_size_ but is
2488 // reduced to stub_group_size_/1024 on seeing a section with
2489 // external conditional branches.
2490 uint32_t group_size_
;
2491 uint64_t group_start_addr_
;
2492 // owner_ and output_section_ specify the section to which stubs are
2493 // attached. The stubs are placed at the end of this section.
2494 const Output_section::Input_section
* owner_
;
2495 Output_section
* output_section_
;
2498 // Return true iff input section can be handled by current stub
2499 // group. Sections are presented to this function in order,
2500 // so the first section is the head of the group.
2503 Stub_control::can_add_to_stub_group(Output_section
* o
,
2504 const Output_section::Input_section
* i
,
2507 bool whole_sec
= o
->order() == ORDER_INIT
|| o
->order() == ORDER_FINI
;
2509 uint64_t start_addr
= o
->address();
2512 // .init and .fini sections are pasted together to form a single
2513 // function. We can't be adding stubs in the middle of the function.
2514 this_size
= o
->data_size();
2517 start_addr
+= i
->relobj()->output_section_offset(i
->shndx());
2518 this_size
= i
->data_size();
2521 uint64_t end_addr
= start_addr
+ this_size
;
2522 uint32_t group_size
= this->stub_group_size_
;
2524 this->group_size_
= group_size
= group_size
>> 10;
2526 if (this_size
> group_size
&& !this->suppress_size_errors_
)
2527 gold_warning(_("%s:%s exceeds group size"),
2528 i
->relobj()->name().c_str(),
2529 i
->relobj()->section_name(i
->shndx()).c_str());
2531 gold_debug(DEBUG_TARGET
, "maybe add%s %s:%s size=%#llx total=%#llx",
2532 has14
? " 14bit" : "",
2533 i
->relobj()->name().c_str(),
2534 i
->relobj()->section_name(i
->shndx()).c_str(),
2535 (long long) this_size
,
2536 (this->state_
== NO_GROUP
2538 : (long long) end_addr
- this->group_start_addr_
));
2540 if (this->state_
== HAS_STUB_SECTION
)
2542 // Can we add this section, which is after the stubs, to the
2544 if (end_addr
- this->group_start_addr_
<= this->group_size_
)
2547 else if (this->state_
== FINDING_STUB_SECTION
)
2549 if ((whole_sec
&& this->output_section_
== o
)
2550 || end_addr
- this->group_start_addr_
<= this->group_size_
)
2552 // Stubs are added at the end of "owner_".
2554 this->output_section_
= o
;
2557 // The group before the stubs has reached maximum size.
2558 // Now see about adding sections after the stubs to the
2559 // group. If the current section has a 14-bit branch and
2560 // the group before the stubs exceeds group_size_ (because
2561 // they didn't have 14-bit branches), don't add sections
2562 // after the stubs: The size of stubs for such a large
2563 // group may exceed the reach of a 14-bit branch.
2564 if (!this->stubs_always_after_branch_
2565 && this_size
<= this->group_size_
2566 && start_addr
- this->group_start_addr_
<= this->group_size_
)
2568 gold_debug(DEBUG_TARGET
, "adding after stubs");
2569 this->state_
= HAS_STUB_SECTION
;
2570 this->group_start_addr_
= start_addr
;
2574 else if (this->state_
== NO_GROUP
)
2576 // Only here on very first use of Stub_control
2578 this->output_section_
= o
;
2579 this->state_
= FINDING_STUB_SECTION
;
2580 this->group_size_
= group_size
;
2581 this->group_start_addr_
= start_addr
;
2587 gold_debug(DEBUG_TARGET
, "nope, didn't fit\n");
2589 // The section fails to fit in the current group. Set up a few
2590 // things for the next group. owner_ and output_section_ will be
2591 // set later after we've retrieved those values for the current
2593 this->state_
= FINDING_STUB_SECTION
;
2594 this->group_size_
= group_size
;
2595 this->group_start_addr_
= start_addr
;
2599 // Look over all the input sections, deciding where to place stubs.
2601 template<int size
, bool big_endian
>
2603 Target_powerpc
<size
, big_endian
>::group_sections(Layout
* layout
,
2605 bool no_size_errors
)
2607 Stub_control
stub_control(this->stub_group_size_
, no_size_errors
);
2609 // Group input sections and insert stub table
2610 Stub_table_owner
* table_owner
= NULL
;
2611 std::vector
<Stub_table_owner
*> tables
;
2612 Layout::Section_list section_list
;
2613 layout
->get_executable_sections(§ion_list
);
2614 std::stable_sort(section_list
.begin(), section_list
.end(), Sort_sections());
2615 for (Layout::Section_list::iterator o
= section_list
.begin();
2616 o
!= section_list
.end();
2619 typedef Output_section::Input_section_list Input_section_list
;
2620 for (Input_section_list::const_iterator i
2621 = (*o
)->input_sections().begin();
2622 i
!= (*o
)->input_sections().end();
2625 if (i
->is_input_section()
2626 || i
->is_relaxed_input_section())
2628 Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
2629 <Powerpc_relobj
<size
, big_endian
>*>(i
->relobj());
2630 bool has14
= ppcobj
->has_14bit_branch(i
->shndx());
2631 if (!stub_control
.can_add_to_stub_group(*o
, &*i
, has14
))
2633 table_owner
->output_section
= stub_control
.output_section();
2634 table_owner
->owner
= stub_control
.owner();
2635 stub_control
.set_output_and_owner(*o
, &*i
);
2638 if (table_owner
== NULL
)
2640 table_owner
= new Stub_table_owner
;
2641 tables
.push_back(table_owner
);
2643 ppcobj
->set_stub_table(i
->shndx(), tables
.size() - 1);
2647 if (table_owner
!= NULL
)
2649 table_owner
->output_section
= stub_control
.output_section();
2650 table_owner
->owner
= stub_control
.owner();;
2652 for (typename
std::vector
<Stub_table_owner
*>::iterator t
= tables
.begin();
2656 Stub_table
<size
, big_endian
>* stub_table
;
2658 if ((*t
)->owner
->is_input_section())
2659 stub_table
= new Stub_table
<size
, big_endian
>(this,
2660 (*t
)->output_section
,
2662 else if ((*t
)->owner
->is_relaxed_input_section())
2663 stub_table
= static_cast<Stub_table
<size
, big_endian
>*>(
2664 (*t
)->owner
->relaxed_input_section());
2667 this->stub_tables_
.push_back(stub_table
);
2672 static unsigned long
2673 max_branch_delta (unsigned int r_type
)
2675 if (r_type
== elfcpp::R_POWERPC_REL14
2676 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
2677 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
)
2679 if (r_type
== elfcpp::R_POWERPC_REL24
2680 || r_type
== elfcpp::R_PPC_PLTREL24
2681 || r_type
== elfcpp::R_PPC_LOCAL24PC
)
2686 // If this branch needs a plt call stub, or a long branch stub, make one.
2688 template<int size
, bool big_endian
>
2690 Target_powerpc
<size
, big_endian
>::Branch_info::make_stub(
2691 Stub_table
<size
, big_endian
>* stub_table
,
2692 Stub_table
<size
, big_endian
>* ifunc_stub_table
,
2693 Symbol_table
* symtab
) const
2695 Symbol
* sym
= this->object_
->global_symbol(this->r_sym_
);
2696 if (sym
!= NULL
&& sym
->is_forwarder())
2697 sym
= symtab
->resolve_forwards(sym
);
2698 const Sized_symbol
<size
>* gsym
= static_cast<const Sized_symbol
<size
>*>(sym
);
2699 Target_powerpc
<size
, big_endian
>* target
=
2700 static_cast<Target_powerpc
<size
, big_endian
>*>(
2701 parameters
->sized_target
<size
, big_endian
>());
2705 ? gsym
->use_plt_offset(Scan::get_reference_flags(this->r_type_
, target
))
2706 : this->object_
->local_has_plt_offset(this->r_sym_
))
2710 && target
->abiversion() >= 2
2711 && !parameters
->options().output_is_position_independent()
2712 && !is_branch_reloc(this->r_type_
))
2713 target
->glink_section()->add_global_entry(gsym
);
2716 if (stub_table
== NULL
)
2717 stub_table
= this->object_
->stub_table(this->shndx_
);
2718 if (stub_table
== NULL
)
2720 // This is a ref from a data section to an ifunc symbol.
2721 stub_table
= ifunc_stub_table
;
2723 gold_assert(stub_table
!= NULL
);
2724 Address from
= this->object_
->get_output_section_offset(this->shndx_
);
2725 if (from
!= invalid_address
)
2726 from
+= (this->object_
->output_section(this->shndx_
)->address()
2729 ok
= stub_table
->add_plt_call_entry(from
,
2730 this->object_
, gsym
,
2731 this->r_type_
, this->addend_
);
2733 ok
= stub_table
->add_plt_call_entry(from
,
2734 this->object_
, this->r_sym_
,
2735 this->r_type_
, this->addend_
);
2740 Address max_branch_offset
= max_branch_delta(this->r_type_
);
2741 if (max_branch_offset
== 0)
2743 Address from
= this->object_
->get_output_section_offset(this->shndx_
);
2744 gold_assert(from
!= invalid_address
);
2745 from
+= (this->object_
->output_section(this->shndx_
)->address()
2750 switch (gsym
->source())
2752 case Symbol::FROM_OBJECT
:
2754 Object
* symobj
= gsym
->object();
2755 if (symobj
->is_dynamic()
2756 || symobj
->pluginobj() != NULL
)
2759 unsigned int shndx
= gsym
->shndx(&is_ordinary
);
2760 if (shndx
== elfcpp::SHN_UNDEF
)
2765 case Symbol::IS_UNDEFINED
:
2771 Symbol_table::Compute_final_value_status status
;
2772 to
= symtab
->compute_final_value
<size
>(gsym
, &status
);
2773 if (status
!= Symbol_table::CFVS_OK
)
2776 to
+= this->object_
->ppc64_local_entry_offset(gsym
);
2780 const Symbol_value
<size
>* psymval
2781 = this->object_
->local_symbol(this->r_sym_
);
2782 Symbol_value
<size
> symval
;
2783 if (psymval
->is_section_symbol())
2784 symval
.set_is_section_symbol();
2785 typedef Sized_relobj_file
<size
, big_endian
> ObjType
;
2786 typename
ObjType::Compute_final_local_value_status status
2787 = this->object_
->compute_final_local_value(this->r_sym_
, psymval
,
2789 if (status
!= ObjType::CFLV_OK
2790 || !symval
.has_output_value())
2792 to
= symval
.value(this->object_
, 0);
2794 to
+= this->object_
->ppc64_local_entry_offset(this->r_sym_
);
2796 if (!(size
== 32 && this->r_type_
== elfcpp::R_PPC_PLTREL24
))
2797 to
+= this->addend_
;
2798 if (stub_table
== NULL
)
2799 stub_table
= this->object_
->stub_table(this->shndx_
);
2800 if (size
== 64 && target
->abiversion() < 2)
2802 unsigned int dest_shndx
;
2803 if (!target
->symval_for_branch(symtab
, gsym
, this->object_
,
2807 Address delta
= to
- from
;
2808 if (delta
+ max_branch_offset
>= 2 * max_branch_offset
)
2810 if (stub_table
== NULL
)
2812 gold_warning(_("%s:%s: branch in non-executable section,"
2813 " no long branch stub for you"),
2814 this->object_
->name().c_str(),
2815 this->object_
->section_name(this->shndx_
).c_str());
2818 bool save_res
= (size
== 64
2820 && gsym
->source() == Symbol::IN_OUTPUT_DATA
2821 && gsym
->output_data() == target
->savres_section());
2822 ok
= stub_table
->add_long_branch_entry(this->object_
,
2824 from
, to
, save_res
);
2828 gold_debug(DEBUG_TARGET
,
2829 "branch at %s:%s+%#lx\n"
2830 "can't reach stub attached to %s:%s",
2831 this->object_
->name().c_str(),
2832 this->object_
->section_name(this->shndx_
).c_str(),
2833 (unsigned long) this->offset_
,
2834 stub_table
->relobj()->name().c_str(),
2835 stub_table
->relobj()->section_name(stub_table
->shndx()).c_str());
2840 // Relaxation hook. This is where we do stub generation.
2842 template<int size
, bool big_endian
>
2844 Target_powerpc
<size
, big_endian
>::do_relax(int pass
,
2845 const Input_objects
*,
2846 Symbol_table
* symtab
,
2850 unsigned int prev_brlt_size
= 0;
2854 = this->abiversion() < 2 && parameters
->options().plt_thread_safe();
2856 && this->abiversion() < 2
2858 && !parameters
->options().user_set_plt_thread_safe())
2860 static const char* const thread_starter
[] =
2864 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
2866 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
2867 "mq_notify", "create_timer",
2872 "GOMP_parallel_start",
2873 "GOMP_parallel_loop_static",
2874 "GOMP_parallel_loop_static_start",
2875 "GOMP_parallel_loop_dynamic",
2876 "GOMP_parallel_loop_dynamic_start",
2877 "GOMP_parallel_loop_guided",
2878 "GOMP_parallel_loop_guided_start",
2879 "GOMP_parallel_loop_runtime",
2880 "GOMP_parallel_loop_runtime_start",
2881 "GOMP_parallel_sections",
2882 "GOMP_parallel_sections_start",
2887 if (parameters
->options().shared())
2891 for (unsigned int i
= 0;
2892 i
< sizeof(thread_starter
) / sizeof(thread_starter
[0]);
2895 Symbol
* sym
= symtab
->lookup(thread_starter
[i
], NULL
);
2896 thread_safe
= (sym
!= NULL
2898 && sym
->in_real_elf());
2904 this->plt_thread_safe_
= thread_safe
;
2909 this->stub_group_size_
= parameters
->options().stub_group_size();
2910 bool no_size_errors
= true;
2911 if (this->stub_group_size_
== 1)
2912 this->stub_group_size_
= 0x1c00000;
2913 else if (this->stub_group_size_
== -1)
2914 this->stub_group_size_
= -0x1e00000;
2916 no_size_errors
= false;
2917 this->group_sections(layout
, task
, no_size_errors
);
2919 else if (this->relax_failed_
&& this->relax_fail_count_
< 3)
2921 this->branch_lookup_table_
.clear();
2922 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
2923 p
!= this->stub_tables_
.end();
2926 (*p
)->clear_stubs(true);
2928 this->stub_tables_
.clear();
2929 this->stub_group_size_
= this->stub_group_size_
/ 4 * 3;
2930 gold_info(_("%s: stub group size is too large; retrying with %#x"),
2931 program_name
, this->stub_group_size_
);
2932 this->group_sections(layout
, task
, true);
2935 // We need address of stub tables valid for make_stub.
2936 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
2937 p
!= this->stub_tables_
.end();
2940 const Powerpc_relobj
<size
, big_endian
>* object
2941 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>((*p
)->relobj());
2942 Address off
= object
->get_output_section_offset((*p
)->shndx());
2943 gold_assert(off
!= invalid_address
);
2944 Output_section
* os
= (*p
)->output_section();
2945 (*p
)->set_address_and_size(os
, off
);
2950 // Clear plt call stubs, long branch stubs and branch lookup table.
2951 prev_brlt_size
= this->branch_lookup_table_
.size();
2952 this->branch_lookup_table_
.clear();
2953 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
2954 p
!= this->stub_tables_
.end();
2957 (*p
)->clear_stubs(false);
2961 // Build all the stubs.
2962 this->relax_failed_
= false;
2963 Stub_table
<size
, big_endian
>* ifunc_stub_table
2964 = this->stub_tables_
.size() == 0 ? NULL
: this->stub_tables_
[0];
2965 Stub_table
<size
, big_endian
>* one_stub_table
2966 = this->stub_tables_
.size() != 1 ? NULL
: ifunc_stub_table
;
2967 for (typename
Branches::const_iterator b
= this->branch_info_
.begin();
2968 b
!= this->branch_info_
.end();
2971 if (!b
->make_stub(one_stub_table
, ifunc_stub_table
, symtab
)
2972 && !this->relax_failed_
)
2974 this->relax_failed_
= true;
2975 this->relax_fail_count_
++;
2976 if (this->relax_fail_count_
< 3)
2981 // Did anything change size?
2982 unsigned int num_huge_branches
= this->branch_lookup_table_
.size();
2983 bool again
= num_huge_branches
!= prev_brlt_size
;
2984 if (size
== 64 && num_huge_branches
!= 0)
2985 this->make_brlt_section(layout
);
2986 if (size
== 64 && again
)
2987 this->brlt_section_
->set_current_size(num_huge_branches
);
2989 typedef Unordered_set
<Output_section
*> Output_sections
;
2990 Output_sections os_need_update
;
2991 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
2992 p
!= this->stub_tables_
.end();
2995 if ((*p
)->size_update())
2998 (*p
)->add_eh_frame(layout
);
2999 os_need_update
.insert((*p
)->output_section());
3003 // Set output section offsets for all input sections in an output
3004 // section that just changed size. Anything past the stubs will
3006 for (typename
Output_sections::iterator p
= os_need_update
.begin();
3007 p
!= os_need_update
.end();
3010 Output_section
* os
= *p
;
3012 typedef Output_section::Input_section_list Input_section_list
;
3013 for (Input_section_list::const_iterator i
= os
->input_sections().begin();
3014 i
!= os
->input_sections().end();
3017 off
= align_address(off
, i
->addralign());
3018 if (i
->is_input_section() || i
->is_relaxed_input_section())
3019 i
->relobj()->set_section_offset(i
->shndx(), off
);
3020 if (i
->is_relaxed_input_section())
3022 Stub_table
<size
, big_endian
>* stub_table
3023 = static_cast<Stub_table
<size
, big_endian
>*>(
3024 i
->relaxed_input_section());
3025 Address stub_table_size
= stub_table
->set_address_and_size(os
, off
);
3026 off
+= stub_table_size
;
3027 // After a few iterations, set current stub table size
3028 // as min size threshold, so later stub tables can only
3031 stub_table
->set_min_size_threshold(stub_table_size
);
3034 off
+= i
->data_size();
3036 // If .branch_lt is part of this output section, then we have
3037 // just done the offset adjustment.
3038 os
->clear_section_offsets_need_adjustment();
3043 && num_huge_branches
!= 0
3044 && parameters
->options().output_is_position_independent())
3046 // Fill in the BRLT relocs.
3047 this->brlt_section_
->reset_brlt_sizes();
3048 for (typename
Branch_lookup_table::const_iterator p
3049 = this->branch_lookup_table_
.begin();
3050 p
!= this->branch_lookup_table_
.end();
3053 this->brlt_section_
->add_reloc(p
->first
, p
->second
);
3055 this->brlt_section_
->finalize_brlt_sizes();
3060 template<int size
, bool big_endian
>
3062 Target_powerpc
<size
, big_endian
>::do_plt_fde_location(const Output_data
* plt
,
3063 unsigned char* oview
,
3067 uint64_t address
= plt
->address();
3068 off_t len
= plt
->data_size();
3070 if (plt
== this->glink_
)
3072 // See Output_data_glink::do_write() for glink contents.
3075 gold_assert(parameters
->doing_static_link());
3076 // Static linking may need stubs, to support ifunc and long
3077 // branches. We need to create an output section for
3078 // .eh_frame early in the link process, to have a place to
3079 // attach stub .eh_frame info. We also need to have
3080 // registered a CIE that matches the stub CIE. Both of
3081 // these requirements are satisfied by creating an FDE and
3082 // CIE for .glink, even though static linking will leave
3083 // .glink zero length.
3084 // ??? Hopefully generating an FDE with a zero address range
3085 // won't confuse anything that consumes .eh_frame info.
3087 else if (size
== 64)
3089 // There is one word before __glink_PLTresolve
3093 else if (parameters
->options().output_is_position_independent())
3095 // There are two FDEs for a position independent glink.
3096 // The first covers the branch table, the second
3097 // __glink_PLTresolve at the end of glink.
3098 off_t resolve_size
= this->glink_
->pltresolve_size
;
3099 if (oview
[9] == elfcpp::DW_CFA_nop
)
3100 len
-= resolve_size
;
3103 address
+= len
- resolve_size
;
3110 // Must be a stub table.
3111 const Stub_table
<size
, big_endian
>* stub_table
3112 = static_cast<const Stub_table
<size
, big_endian
>*>(plt
);
3113 uint64_t stub_address
= stub_table
->stub_address();
3114 len
-= stub_address
- address
;
3115 address
= stub_address
;
3118 *paddress
= address
;
3122 // A class to handle the PLT data.
3124 template<int size
, bool big_endian
>
3125 class Output_data_plt_powerpc
: public Output_section_data_build
3128 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true,
3129 size
, big_endian
> Reloc_section
;
3131 Output_data_plt_powerpc(Target_powerpc
<size
, big_endian
>* targ
,
3132 Reloc_section
* plt_rel
,
3134 : Output_section_data_build(size
== 32 ? 4 : 8),
3140 // Add an entry to the PLT.
3145 add_ifunc_entry(Symbol
*);
3148 add_local_ifunc_entry(Sized_relobj_file
<size
, big_endian
>*, unsigned int);
3150 // Return the .rela.plt section data.
3157 // Return the number of PLT entries.
3161 if (this->current_data_size() == 0)
3163 return ((this->current_data_size() - this->first_plt_entry_offset())
3164 / this->plt_entry_size());
3169 do_adjust_output_section(Output_section
* os
)
3174 // Write to a map file.
3176 do_print_to_mapfile(Mapfile
* mapfile
) const
3177 { mapfile
->print_output_data(this, this->name_
); }
3180 // Return the offset of the first non-reserved PLT entry.
3182 first_plt_entry_offset() const
3184 // IPLT has no reserved entry.
3185 if (this->name_
[3] == 'I')
3187 return this->targ_
->first_plt_entry_offset();
3190 // Return the size of each PLT entry.
3192 plt_entry_size() const
3194 return this->targ_
->plt_entry_size();
3197 // Write out the PLT data.
3199 do_write(Output_file
*);
3201 // The reloc section.
3202 Reloc_section
* rel_
;
3203 // Allows access to .glink for do_write.
3204 Target_powerpc
<size
, big_endian
>* targ_
;
3205 // What to report in map file.
3209 // Add an entry to the PLT.
3211 template<int size
, bool big_endian
>
3213 Output_data_plt_powerpc
<size
, big_endian
>::add_entry(Symbol
* gsym
)
3215 if (!gsym
->has_plt_offset())
3217 section_size_type off
= this->current_data_size();
3219 off
+= this->first_plt_entry_offset();
3220 gsym
->set_plt_offset(off
);
3221 gsym
->set_needs_dynsym_entry();
3222 unsigned int dynrel
= elfcpp::R_POWERPC_JMP_SLOT
;
3223 this->rel_
->add_global(gsym
, dynrel
, this, off
, 0);
3224 off
+= this->plt_entry_size();
3225 this->set_current_data_size(off
);
3229 // Add an entry for a global ifunc symbol that resolves locally, to the IPLT.
3231 template<int size
, bool big_endian
>
3233 Output_data_plt_powerpc
<size
, big_endian
>::add_ifunc_entry(Symbol
* gsym
)
3235 if (!gsym
->has_plt_offset())
3237 section_size_type off
= this->current_data_size();
3238 gsym
->set_plt_offset(off
);
3239 unsigned int dynrel
= elfcpp::R_POWERPC_IRELATIVE
;
3240 if (size
== 64 && this->targ_
->abiversion() < 2)
3241 dynrel
= elfcpp::R_PPC64_JMP_IREL
;
3242 this->rel_
->add_symbolless_global_addend(gsym
, dynrel
, this, off
, 0);
3243 off
+= this->plt_entry_size();
3244 this->set_current_data_size(off
);
3248 // Add an entry for a local ifunc symbol to the IPLT.
3250 template<int size
, bool big_endian
>
3252 Output_data_plt_powerpc
<size
, big_endian
>::add_local_ifunc_entry(
3253 Sized_relobj_file
<size
, big_endian
>* relobj
,
3254 unsigned int local_sym_index
)
3256 if (!relobj
->local_has_plt_offset(local_sym_index
))
3258 section_size_type off
= this->current_data_size();
3259 relobj
->set_local_plt_offset(local_sym_index
, off
);
3260 unsigned int dynrel
= elfcpp::R_POWERPC_IRELATIVE
;
3261 if (size
== 64 && this->targ_
->abiversion() < 2)
3262 dynrel
= elfcpp::R_PPC64_JMP_IREL
;
3263 this->rel_
->add_symbolless_local_addend(relobj
, local_sym_index
, dynrel
,
3265 off
+= this->plt_entry_size();
3266 this->set_current_data_size(off
);
3270 static const uint32_t add_0_11_11
= 0x7c0b5a14;
3271 static const uint32_t add_2_2_11
= 0x7c425a14;
3272 static const uint32_t add_2_2_12
= 0x7c426214;
3273 static const uint32_t add_3_3_2
= 0x7c631214;
3274 static const uint32_t add_3_3_13
= 0x7c636a14;
3275 static const uint32_t add_11_0_11
= 0x7d605a14;
3276 static const uint32_t add_11_2_11
= 0x7d625a14;
3277 static const uint32_t add_11_11_2
= 0x7d6b1214;
3278 static const uint32_t addi_0_12
= 0x380c0000;
3279 static const uint32_t addi_2_2
= 0x38420000;
3280 static const uint32_t addi_3_3
= 0x38630000;
3281 static const uint32_t addi_11_11
= 0x396b0000;
3282 static const uint32_t addi_12_1
= 0x39810000;
3283 static const uint32_t addi_12_12
= 0x398c0000;
3284 static const uint32_t addis_0_2
= 0x3c020000;
3285 static const uint32_t addis_0_13
= 0x3c0d0000;
3286 static const uint32_t addis_2_12
= 0x3c4c0000;
3287 static const uint32_t addis_11_2
= 0x3d620000;
3288 static const uint32_t addis_11_11
= 0x3d6b0000;
3289 static const uint32_t addis_11_30
= 0x3d7e0000;
3290 static const uint32_t addis_12_1
= 0x3d810000;
3291 static const uint32_t addis_12_2
= 0x3d820000;
3292 static const uint32_t addis_12_12
= 0x3d8c0000;
3293 static const uint32_t b
= 0x48000000;
3294 static const uint32_t bcl_20_31
= 0x429f0005;
3295 static const uint32_t bctr
= 0x4e800420;
3296 static const uint32_t blr
= 0x4e800020;
3297 static const uint32_t bnectr_p4
= 0x4ce20420;
3298 static const uint32_t cmpld_7_12_0
= 0x7fac0040;
3299 static const uint32_t cmpldi_2_0
= 0x28220000;
3300 static const uint32_t cror_15_15_15
= 0x4def7b82;
3301 static const uint32_t cror_31_31_31
= 0x4ffffb82;
3302 static const uint32_t ld_0_1
= 0xe8010000;
3303 static const uint32_t ld_0_12
= 0xe80c0000;
3304 static const uint32_t ld_2_1
= 0xe8410000;
3305 static const uint32_t ld_2_2
= 0xe8420000;
3306 static const uint32_t ld_2_11
= 0xe84b0000;
3307 static const uint32_t ld_2_12
= 0xe84c0000;
3308 static const uint32_t ld_11_2
= 0xe9620000;
3309 static const uint32_t ld_11_11
= 0xe96b0000;
3310 static const uint32_t ld_12_2
= 0xe9820000;
3311 static const uint32_t ld_12_11
= 0xe98b0000;
3312 static const uint32_t ld_12_12
= 0xe98c0000;
3313 static const uint32_t lfd_0_1
= 0xc8010000;
3314 static const uint32_t li_0_0
= 0x38000000;
3315 static const uint32_t li_12_0
= 0x39800000;
3316 static const uint32_t lis_0
= 0x3c000000;
3317 static const uint32_t lis_2
= 0x3c400000;
3318 static const uint32_t lis_11
= 0x3d600000;
3319 static const uint32_t lis_12
= 0x3d800000;
3320 static const uint32_t lvx_0_12_0
= 0x7c0c00ce;
3321 static const uint32_t lwz_0_12
= 0x800c0000;
3322 static const uint32_t lwz_11_11
= 0x816b0000;
3323 static const uint32_t lwz_11_30
= 0x817e0000;
3324 static const uint32_t lwz_12_12
= 0x818c0000;
3325 static const uint32_t lwzu_0_12
= 0x840c0000;
3326 static const uint32_t mflr_0
= 0x7c0802a6;
3327 static const uint32_t mflr_11
= 0x7d6802a6;
3328 static const uint32_t mflr_12
= 0x7d8802a6;
3329 static const uint32_t mtctr_0
= 0x7c0903a6;
3330 static const uint32_t mtctr_11
= 0x7d6903a6;
3331 static const uint32_t mtctr_12
= 0x7d8903a6;
3332 static const uint32_t mtlr_0
= 0x7c0803a6;
3333 static const uint32_t mtlr_12
= 0x7d8803a6;
3334 static const uint32_t nop
= 0x60000000;
3335 static const uint32_t ori_0_0_0
= 0x60000000;
3336 static const uint32_t srdi_0_0_2
= 0x7800f082;
3337 static const uint32_t std_0_1
= 0xf8010000;
3338 static const uint32_t std_0_12
= 0xf80c0000;
3339 static const uint32_t std_2_1
= 0xf8410000;
3340 static const uint32_t stfd_0_1
= 0xd8010000;
3341 static const uint32_t stvx_0_12_0
= 0x7c0c01ce;
3342 static const uint32_t sub_11_11_12
= 0x7d6c5850;
3343 static const uint32_t sub_12_12_11
= 0x7d8b6050;
3344 static const uint32_t xor_2_12_12
= 0x7d826278;
3345 static const uint32_t xor_11_12_12
= 0x7d8b6278;
3347 // Write out the PLT.
3349 template<int size
, bool big_endian
>
3351 Output_data_plt_powerpc
<size
, big_endian
>::do_write(Output_file
* of
)
3353 if (size
== 32 && this->name_
[3] != 'I')
3355 const section_size_type offset
= this->offset();
3356 const section_size_type oview_size
3357 = convert_to_section_size_type(this->data_size());
3358 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
3359 unsigned char* pov
= oview
;
3360 unsigned char* endpov
= oview
+ oview_size
;
3362 // The address of the .glink branch table
3363 const Output_data_glink
<size
, big_endian
>* glink
3364 = this->targ_
->glink_section();
3365 elfcpp::Elf_types
<32>::Elf_Addr branch_tab
= glink
->address();
3367 while (pov
< endpov
)
3369 elfcpp::Swap
<32, big_endian
>::writeval(pov
, branch_tab
);
3374 of
->write_output_view(offset
, oview_size
, oview
);
3378 // Create the PLT section.
3380 template<int size
, bool big_endian
>
3382 Target_powerpc
<size
, big_endian
>::make_plt_section(Symbol_table
* symtab
,
3385 if (this->plt_
== NULL
)
3387 if (this->got_
== NULL
)
3388 this->got_section(symtab
, layout
);
3390 if (this->glink_
== NULL
)
3391 make_glink_section(layout
);
3393 // Ensure that .rela.dyn always appears before .rela.plt This is
3394 // necessary due to how, on PowerPC and some other targets, .rela.dyn
3395 // needs to include .rela.plt in its range.
3396 this->rela_dyn_section(layout
);
3398 Reloc_section
* plt_rel
= new Reloc_section(false);
3399 layout
->add_output_section_data(".rela.plt", elfcpp::SHT_RELA
,
3400 elfcpp::SHF_ALLOC
, plt_rel
,
3401 ORDER_DYNAMIC_PLT_RELOCS
, false);
3403 = new Output_data_plt_powerpc
<size
, big_endian
>(this, plt_rel
,
3405 layout
->add_output_section_data(".plt",
3407 ? elfcpp::SHT_PROGBITS
3408 : elfcpp::SHT_NOBITS
),
3409 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
3418 // Create the IPLT section.
3420 template<int size
, bool big_endian
>
3422 Target_powerpc
<size
, big_endian
>::make_iplt_section(Symbol_table
* symtab
,
3425 if (this->iplt_
== NULL
)
3427 this->make_plt_section(symtab
, layout
);
3429 Reloc_section
* iplt_rel
= new Reloc_section(false);
3430 this->rela_dyn_
->output_section()->add_output_section_data(iplt_rel
);
3432 = new Output_data_plt_powerpc
<size
, big_endian
>(this, iplt_rel
,
3434 this->plt_
->output_section()->add_output_section_data(this->iplt_
);
3438 // A section for huge long branch addresses, similar to plt section.
3440 template<int size
, bool big_endian
>
3441 class Output_data_brlt_powerpc
: public Output_section_data_build
3444 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
3445 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true,
3446 size
, big_endian
> Reloc_section
;
3448 Output_data_brlt_powerpc(Target_powerpc
<size
, big_endian
>* targ
,
3449 Reloc_section
* brlt_rel
)
3450 : Output_section_data_build(size
== 32 ? 4 : 8),
3458 this->reset_data_size();
3459 this->rel_
->reset_data_size();
3463 finalize_brlt_sizes()
3465 this->finalize_data_size();
3466 this->rel_
->finalize_data_size();
3469 // Add a reloc for an entry in the BRLT.
3471 add_reloc(Address to
, unsigned int off
)
3472 { this->rel_
->add_relative(elfcpp::R_POWERPC_RELATIVE
, this, off
, to
); }
3474 // Update section and reloc section size.
3476 set_current_size(unsigned int num_branches
)
3478 this->reset_address_and_file_offset();
3479 this->set_current_data_size(num_branches
* 16);
3480 this->finalize_data_size();
3481 Output_section
* os
= this->output_section();
3482 os
->set_section_offsets_need_adjustment();
3483 if (this->rel_
!= NULL
)
3485 unsigned int reloc_size
3486 = Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
3487 this->rel_
->reset_address_and_file_offset();
3488 this->rel_
->set_current_data_size(num_branches
* reloc_size
);
3489 this->rel_
->finalize_data_size();
3490 Output_section
* os
= this->rel_
->output_section();
3491 os
->set_section_offsets_need_adjustment();
3497 do_adjust_output_section(Output_section
* os
)
3502 // Write to a map file.
3504 do_print_to_mapfile(Mapfile
* mapfile
) const
3505 { mapfile
->print_output_data(this, "** BRLT"); }
3508 // Write out the BRLT data.
3510 do_write(Output_file
*);
3512 // The reloc section.
3513 Reloc_section
* rel_
;
3514 Target_powerpc
<size
, big_endian
>* targ_
;
3517 // Make the branch lookup table section.
3519 template<int size
, bool big_endian
>
3521 Target_powerpc
<size
, big_endian
>::make_brlt_section(Layout
* layout
)
3523 if (size
== 64 && this->brlt_section_
== NULL
)
3525 Reloc_section
* brlt_rel
= NULL
;
3526 bool is_pic
= parameters
->options().output_is_position_independent();
3529 // When PIC we can't fill in .branch_lt (like .plt it can be
3530 // a bss style section) but must initialise at runtime via
3531 // dynamic relocats.
3532 this->rela_dyn_section(layout
);
3533 brlt_rel
= new Reloc_section(false);
3534 this->rela_dyn_
->output_section()->add_output_section_data(brlt_rel
);
3537 = new Output_data_brlt_powerpc
<size
, big_endian
>(this, brlt_rel
);
3538 if (this->plt_
&& is_pic
)
3539 this->plt_
->output_section()
3540 ->add_output_section_data(this->brlt_section_
);
3542 layout
->add_output_section_data(".branch_lt",
3543 (is_pic
? elfcpp::SHT_NOBITS
3544 : elfcpp::SHT_PROGBITS
),
3545 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
3546 this->brlt_section_
,
3547 (is_pic
? ORDER_SMALL_BSS
3548 : ORDER_SMALL_DATA
),
3553 // Write out .branch_lt when non-PIC.
3555 template<int size
, bool big_endian
>
3557 Output_data_brlt_powerpc
<size
, big_endian
>::do_write(Output_file
* of
)
3559 if (size
== 64 && !parameters
->options().output_is_position_independent())
3561 const section_size_type offset
= this->offset();
3562 const section_size_type oview_size
3563 = convert_to_section_size_type(this->data_size());
3564 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
3566 this->targ_
->write_branch_lookup_table(oview
);
3567 of
->write_output_view(offset
, oview_size
, oview
);
3571 static inline uint32_t
3577 static inline uint32_t
3583 static inline uint32_t
3586 return hi(a
+ 0x8000);
3592 static const unsigned char eh_frame_cie
[12];
3596 const unsigned char Eh_cie
<size
>::eh_frame_cie
[] =
3599 'z', 'R', 0, // Augmentation string.
3600 4, // Code alignment.
3601 0x80 - size
/ 8 , // Data alignment.
3603 1, // Augmentation size.
3604 (elfcpp::DW_EH_PE_pcrel
3605 | elfcpp::DW_EH_PE_sdata4
), // FDE encoding.
3606 elfcpp::DW_CFA_def_cfa
, 1, 0 // def_cfa: r1 offset 0.
3609 // Describe __glink_PLTresolve use of LR, 64-bit version ABIv1.
3610 static const unsigned char glink_eh_frame_fde_64v1
[] =
3612 0, 0, 0, 0, // Replaced with offset to .glink.
3613 0, 0, 0, 0, // Replaced with size of .glink.
3614 0, // Augmentation size.
3615 elfcpp::DW_CFA_advance_loc
+ 1,
3616 elfcpp::DW_CFA_register
, 65, 12,
3617 elfcpp::DW_CFA_advance_loc
+ 4,
3618 elfcpp::DW_CFA_restore_extended
, 65
3621 // Describe __glink_PLTresolve use of LR, 64-bit version ABIv2.
3622 static const unsigned char glink_eh_frame_fde_64v2
[] =
3624 0, 0, 0, 0, // Replaced with offset to .glink.
3625 0, 0, 0, 0, // Replaced with size of .glink.
3626 0, // Augmentation size.
3627 elfcpp::DW_CFA_advance_loc
+ 1,
3628 elfcpp::DW_CFA_register
, 65, 0,
3629 elfcpp::DW_CFA_advance_loc
+ 4,
3630 elfcpp::DW_CFA_restore_extended
, 65
3633 // Describe __glink_PLTresolve use of LR, 32-bit version.
3634 static const unsigned char glink_eh_frame_fde_32
[] =
3636 0, 0, 0, 0, // Replaced with offset to .glink.
3637 0, 0, 0, 0, // Replaced with size of .glink.
3638 0, // Augmentation size.
3639 elfcpp::DW_CFA_advance_loc
+ 2,
3640 elfcpp::DW_CFA_register
, 65, 0,
3641 elfcpp::DW_CFA_advance_loc
+ 4,
3642 elfcpp::DW_CFA_restore_extended
, 65
3645 static const unsigned char default_fde
[] =
3647 0, 0, 0, 0, // Replaced with offset to stubs.
3648 0, 0, 0, 0, // Replaced with size of stubs.
3649 0, // Augmentation size.
3650 elfcpp::DW_CFA_nop
, // Pad.
3655 template<bool big_endian
>
3657 write_insn(unsigned char* p
, uint32_t v
)
3659 elfcpp::Swap
<32, big_endian
>::writeval(p
, v
);
3662 // Stub_table holds information about plt and long branch stubs.
3663 // Stubs are built in an area following some input section determined
3664 // by group_sections(). This input section is converted to a relaxed
3665 // input section allowing it to be resized to accommodate the stubs
3667 template<int size
, bool big_endian
>
3668 class Stub_table
: public Output_relaxed_input_section
3671 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
3672 static const Address invalid_address
= static_cast<Address
>(0) - 1;
3674 Stub_table(Target_powerpc
<size
, big_endian
>* targ
,
3675 Output_section
* output_section
,
3676 const Output_section::Input_section
* owner
)
3677 : Output_relaxed_input_section(owner
->relobj(), owner
->shndx(),
3679 ->section_addralign(owner
->shndx())),
3680 targ_(targ
), plt_call_stubs_(), long_branch_stubs_(),
3681 orig_data_size_(owner
->current_data_size()),
3682 plt_size_(0), last_plt_size_(0),
3683 branch_size_(0), last_branch_size_(0), min_size_threshold_(0),
3684 eh_frame_added_(false), need_save_res_(false)
3686 this->set_output_section(output_section
);
3688 std::vector
<Output_relaxed_input_section
*> new_relaxed
;
3689 new_relaxed
.push_back(this);
3690 output_section
->convert_input_sections_to_relaxed_sections(new_relaxed
);
3693 // Add a plt call stub.
3695 add_plt_call_entry(Address
,
3696 const Sized_relobj_file
<size
, big_endian
>*,
3702 add_plt_call_entry(Address
,
3703 const Sized_relobj_file
<size
, big_endian
>*,
3708 // Find a given plt call stub.
3710 find_plt_call_entry(const Symbol
*) const;
3713 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3714 unsigned int) const;
3717 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3723 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3728 // Add a long branch stub.
3730 add_long_branch_entry(const Powerpc_relobj
<size
, big_endian
>*,
3731 unsigned int, Address
, Address
, bool);
3734 find_long_branch_entry(const Powerpc_relobj
<size
, big_endian
>*,
3738 can_reach_stub(Address from
, unsigned int off
, unsigned int r_type
)
3740 Address max_branch_offset
= max_branch_delta(r_type
);
3741 if (max_branch_offset
== 0)
3743 gold_assert(from
!= invalid_address
);
3744 Address loc
= off
+ this->stub_address();
3745 return loc
- from
+ max_branch_offset
< 2 * max_branch_offset
;
3749 clear_stubs(bool all
)
3751 this->plt_call_stubs_
.clear();
3752 this->plt_size_
= 0;
3753 this->long_branch_stubs_
.clear();
3754 this->branch_size_
= 0;
3755 this->need_save_res_
= false;
3758 this->last_plt_size_
= 0;
3759 this->last_branch_size_
= 0;
3764 set_address_and_size(const Output_section
* os
, Address off
)
3766 Address start_off
= off
;
3767 off
+= this->orig_data_size_
;
3768 Address my_size
= this->plt_size_
+ this->branch_size_
;
3769 if (this->need_save_res_
)
3770 my_size
+= this->targ_
->savres_section()->data_size();
3772 off
= align_address(off
, this->stub_align());
3773 // Include original section size and alignment padding in size
3774 my_size
+= off
- start_off
;
3775 // Ensure new size is always larger than min size
3776 // threshold. Alignment requirement is included in "my_size", so
3777 // increase "my_size" does not invalidate alignment.
3778 if (my_size
< this->min_size_threshold_
)
3779 my_size
= this->min_size_threshold_
;
3780 this->reset_address_and_file_offset();
3781 this->set_current_data_size(my_size
);
3782 this->set_address_and_file_offset(os
->address() + start_off
,
3783 os
->offset() + start_off
);
3788 stub_address() const
3790 return align_address(this->address() + this->orig_data_size_
,
3791 this->stub_align());
3797 return align_address(this->offset() + this->orig_data_size_
,
3798 this->stub_align());
3803 { return this->plt_size_
; }
3805 void set_min_size_threshold(Address min_size
)
3806 { this->min_size_threshold_
= min_size
; }
3811 Output_section
* os
= this->output_section();
3812 if (os
->addralign() < this->stub_align())
3814 os
->set_addralign(this->stub_align());
3815 // FIXME: get rid of the insane checkpointing.
3816 // We can't increase alignment of the input section to which
3817 // stubs are attached; The input section may be .init which
3818 // is pasted together with other .init sections to form a
3819 // function. Aligning might insert zero padding resulting in
3820 // sigill. However we do need to increase alignment of the
3821 // output section so that the align_address() on offset in
3822 // set_address_and_size() adds the same padding as the
3823 // align_address() on address in stub_address().
3824 // What's more, we need this alignment for the layout done in
3825 // relaxation_loop_body() so that the output section starts at
3826 // a suitably aligned address.
3827 os
->checkpoint_set_addralign(this->stub_align());
3829 if (this->last_plt_size_
!= this->plt_size_
3830 || this->last_branch_size_
!= this->branch_size_
)
3832 this->last_plt_size_
= this->plt_size_
;
3833 this->last_branch_size_
= this->branch_size_
;
3839 // Add .eh_frame info for this stub section. Unlike other linker
3840 // generated .eh_frame this is added late in the link, because we
3841 // only want the .eh_frame info if this particular stub section is
3844 add_eh_frame(Layout
* layout
)
3846 if (!this->eh_frame_added_
)
3848 if (!parameters
->options().ld_generated_unwind_info())
3851 // Since we add stub .eh_frame info late, it must be placed
3852 // after all other linker generated .eh_frame info so that
3853 // merge mapping need not be updated for input sections.
3854 // There is no provision to use a different CIE to that used
3856 if (!this->targ_
->has_glink())
3859 layout
->add_eh_frame_for_plt(this,
3860 Eh_cie
<size
>::eh_frame_cie
,
3861 sizeof (Eh_cie
<size
>::eh_frame_cie
),
3863 sizeof (default_fde
));
3864 this->eh_frame_added_
= true;
3868 Target_powerpc
<size
, big_endian
>*
3874 class Plt_stub_ent_hash
;
3875 typedef Unordered_map
<Plt_stub_ent
, unsigned int,
3876 Plt_stub_ent_hash
> Plt_stub_entries
;
3878 // Alignment of stub section.
3884 unsigned int min_align
= 32;
3885 unsigned int user_align
= 1 << parameters
->options().plt_align();
3886 return std::max(user_align
, min_align
);
3889 // Return the plt offset for the given call stub.
3891 plt_off(typename
Plt_stub_entries::const_iterator p
, bool* is_iplt
) const
3893 const Symbol
* gsym
= p
->first
.sym_
;
3896 *is_iplt
= (gsym
->type() == elfcpp::STT_GNU_IFUNC
3897 && gsym
->can_use_relative_reloc(false));
3898 return gsym
->plt_offset();
3903 const Sized_relobj_file
<size
, big_endian
>* relobj
= p
->first
.object_
;
3904 unsigned int local_sym_index
= p
->first
.locsym_
;
3905 return relobj
->local_plt_offset(local_sym_index
);
3909 // Size of a given plt call stub.
3911 plt_call_size(typename
Plt_stub_entries::const_iterator p
) const
3917 Address plt_addr
= this->plt_off(p
, &is_iplt
);
3919 plt_addr
+= this->targ_
->iplt_section()->address();
3921 plt_addr
+= this->targ_
->plt_section()->address();
3922 Address got_addr
= this->targ_
->got_section()->output_section()->address();
3923 const Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
3924 <const Powerpc_relobj
<size
, big_endian
>*>(p
->first
.object_
);
3925 got_addr
+= ppcobj
->toc_base_offset();
3926 Address off
= plt_addr
- got_addr
;
3927 unsigned int bytes
= 4 * 4 + 4 * (ha(off
) != 0);
3928 if (this->targ_
->abiversion() < 2)
3930 bool static_chain
= parameters
->options().plt_static_chain();
3931 bool thread_safe
= this->targ_
->plt_thread_safe();
3935 + 4 * (ha(off
+ 8 + 8 * static_chain
) != ha(off
)));
3937 unsigned int align
= 1 << parameters
->options().plt_align();
3939 bytes
= (bytes
+ align
- 1) & -align
;
3943 // Return long branch stub size.
3945 branch_stub_size(Address to
)
3948 = this->stub_address() + this->last_plt_size_
+ this->branch_size_
;
3949 if (to
- loc
+ (1 << 25) < 2 << 25)
3951 if (size
== 64 || !parameters
->options().output_is_position_independent())
3958 do_write(Output_file
*);
3960 // Plt call stub keys.
3964 Plt_stub_ent(const Symbol
* sym
)
3965 : sym_(sym
), object_(0), addend_(0), locsym_(0)
3968 Plt_stub_ent(const Sized_relobj_file
<size
, big_endian
>* object
,
3969 unsigned int locsym_index
)
3970 : sym_(NULL
), object_(object
), addend_(0), locsym_(locsym_index
)
3973 Plt_stub_ent(const Sized_relobj_file
<size
, big_endian
>* object
,
3975 unsigned int r_type
,
3977 : sym_(sym
), object_(0), addend_(0), locsym_(0)
3980 this->addend_
= addend
;
3981 else if (parameters
->options().output_is_position_independent()
3982 && r_type
== elfcpp::R_PPC_PLTREL24
)
3984 this->addend_
= addend
;
3985 if (this->addend_
>= 32768)
3986 this->object_
= object
;
3990 Plt_stub_ent(const Sized_relobj_file
<size
, big_endian
>* object
,
3991 unsigned int locsym_index
,
3992 unsigned int r_type
,
3994 : sym_(NULL
), object_(object
), addend_(0), locsym_(locsym_index
)
3997 this->addend_
= addend
;
3998 else if (parameters
->options().output_is_position_independent()
3999 && r_type
== elfcpp::R_PPC_PLTREL24
)
4000 this->addend_
= addend
;
4003 bool operator==(const Plt_stub_ent
& that
) const
4005 return (this->sym_
== that
.sym_
4006 && this->object_
== that
.object_
4007 && this->addend_
== that
.addend_
4008 && this->locsym_
== that
.locsym_
);
4012 const Sized_relobj_file
<size
, big_endian
>* object_
;
4013 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend_
;
4014 unsigned int locsym_
;
4017 class Plt_stub_ent_hash
4020 size_t operator()(const Plt_stub_ent
& ent
) const
4022 return (reinterpret_cast<uintptr_t>(ent
.sym_
)
4023 ^ reinterpret_cast<uintptr_t>(ent
.object_
)
4029 // Long branch stub keys.
4030 class Branch_stub_ent
4033 Branch_stub_ent(const Powerpc_relobj
<size
, big_endian
>* obj
,
4034 Address to
, bool save_res
)
4035 : dest_(to
), toc_base_off_(0), save_res_(save_res
)
4038 toc_base_off_
= obj
->toc_base_offset();
4041 bool operator==(const Branch_stub_ent
& that
) const
4043 return (this->dest_
== that
.dest_
4045 || this->toc_base_off_
== that
.toc_base_off_
));
4049 unsigned int toc_base_off_
;
4053 class Branch_stub_ent_hash
4056 size_t operator()(const Branch_stub_ent
& ent
) const
4057 { return ent
.dest_
^ ent
.toc_base_off_
; }
4060 // In a sane world this would be a global.
4061 Target_powerpc
<size
, big_endian
>* targ_
;
4062 // Map sym/object/addend to stub offset.
4063 Plt_stub_entries plt_call_stubs_
;
4064 // Map destination address to stub offset.
4065 typedef Unordered_map
<Branch_stub_ent
, unsigned int,
4066 Branch_stub_ent_hash
> Branch_stub_entries
;
4067 Branch_stub_entries long_branch_stubs_
;
4068 // size of input section
4069 section_size_type orig_data_size_
;
4071 section_size_type plt_size_
, last_plt_size_
, branch_size_
, last_branch_size_
;
4072 // Some rare cases cause (PR/20529) fluctuation in stub table
4073 // size, which leads to an endless relax loop. This is to be fixed
4074 // by, after the first few iterations, allowing only increase of
4075 // stub table size. This variable sets the minimal possible size of
4076 // a stub table, it is zero for the first few iterations, then
4077 // increases monotonically.
4078 Address min_size_threshold_
;
4079 // Whether .eh_frame info has been created for this stub section.
4080 bool eh_frame_added_
;
4081 // Set if this stub group needs a copy of out-of-line register
4082 // save/restore functions.
4083 bool need_save_res_
;
4086 // Add a plt call stub, if we do not already have one for this
4087 // sym/object/addend combo.
4089 template<int size
, bool big_endian
>
4091 Stub_table
<size
, big_endian
>::add_plt_call_entry(
4093 const Sized_relobj_file
<size
, big_endian
>* object
,
4095 unsigned int r_type
,
4098 Plt_stub_ent
ent(object
, gsym
, r_type
, addend
);
4099 unsigned int off
= this->plt_size_
;
4100 std::pair
<typename
Plt_stub_entries::iterator
, bool> p
4101 = this->plt_call_stubs_
.insert(std::make_pair(ent
, off
));
4103 this->plt_size_
= off
+ this->plt_call_size(p
.first
);
4104 return this->can_reach_stub(from
, off
, r_type
);
4107 template<int size
, bool big_endian
>
4109 Stub_table
<size
, big_endian
>::add_plt_call_entry(
4111 const Sized_relobj_file
<size
, big_endian
>* object
,
4112 unsigned int locsym_index
,
4113 unsigned int r_type
,
4116 Plt_stub_ent
ent(object
, locsym_index
, r_type
, addend
);
4117 unsigned int off
= this->plt_size_
;
4118 std::pair
<typename
Plt_stub_entries::iterator
, bool> p
4119 = this->plt_call_stubs_
.insert(std::make_pair(ent
, off
));
4121 this->plt_size_
= off
+ this->plt_call_size(p
.first
);
4122 return this->can_reach_stub(from
, off
, r_type
);
4125 // Find a plt call stub.
4127 template<int size
, bool big_endian
>
4128 typename Stub_table
<size
, big_endian
>::Address
4129 Stub_table
<size
, big_endian
>::find_plt_call_entry(
4130 const Sized_relobj_file
<size
, big_endian
>* object
,
4132 unsigned int r_type
,
4133 Address addend
) const
4135 Plt_stub_ent
ent(object
, gsym
, r_type
, addend
);
4136 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
4137 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
4140 template<int size
, bool big_endian
>
4141 typename Stub_table
<size
, big_endian
>::Address
4142 Stub_table
<size
, big_endian
>::find_plt_call_entry(const Symbol
* gsym
) const
4144 Plt_stub_ent
ent(gsym
);
4145 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
4146 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
4149 template<int size
, bool big_endian
>
4150 typename Stub_table
<size
, big_endian
>::Address
4151 Stub_table
<size
, big_endian
>::find_plt_call_entry(
4152 const Sized_relobj_file
<size
, big_endian
>* object
,
4153 unsigned int locsym_index
,
4154 unsigned int r_type
,
4155 Address addend
) const
4157 Plt_stub_ent
ent(object
, locsym_index
, r_type
, addend
);
4158 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
4159 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
4162 template<int size
, bool big_endian
>
4163 typename Stub_table
<size
, big_endian
>::Address
4164 Stub_table
<size
, big_endian
>::find_plt_call_entry(
4165 const Sized_relobj_file
<size
, big_endian
>* object
,
4166 unsigned int locsym_index
) const
4168 Plt_stub_ent
ent(object
, locsym_index
);
4169 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
4170 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
4173 // Add a long branch stub if we don't already have one to given
4176 template<int size
, bool big_endian
>
4178 Stub_table
<size
, big_endian
>::add_long_branch_entry(
4179 const Powerpc_relobj
<size
, big_endian
>* object
,
4180 unsigned int r_type
,
4185 Branch_stub_ent
ent(object
, to
, save_res
);
4186 Address off
= this->branch_size_
;
4187 if (this->long_branch_stubs_
.insert(std::make_pair(ent
, off
)).second
)
4190 this->need_save_res_
= true;
4193 unsigned int stub_size
= this->branch_stub_size(to
);
4194 this->branch_size_
= off
+ stub_size
;
4195 if (size
== 64 && stub_size
!= 4)
4196 this->targ_
->add_branch_lookup_table(to
);
4199 return this->can_reach_stub(from
, off
, r_type
);
4202 // Find long branch stub offset.
4204 template<int size
, bool big_endian
>
4205 typename Stub_table
<size
, big_endian
>::Address
4206 Stub_table
<size
, big_endian
>::find_long_branch_entry(
4207 const Powerpc_relobj
<size
, big_endian
>* object
,
4210 Branch_stub_ent
ent(object
, to
, false);
4211 typename
Branch_stub_entries::const_iterator p
4212 = this->long_branch_stubs_
.find(ent
);
4213 if (p
== this->long_branch_stubs_
.end())
4214 return invalid_address
;
4215 if (p
->first
.save_res_
)
4216 return to
- this->targ_
->savres_section()->address() + this->branch_size_
;
4220 // A class to handle .glink.
4222 template<int size
, bool big_endian
>
4223 class Output_data_glink
: public Output_section_data
4226 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
4227 static const Address invalid_address
= static_cast<Address
>(0) - 1;
4228 static const int pltresolve_size
= 16*4;
4230 Output_data_glink(Target_powerpc
<size
, big_endian
>* targ
)
4231 : Output_section_data(16), targ_(targ
), global_entry_stubs_(),
4232 end_branch_table_(), ge_size_(0)
4236 add_eh_frame(Layout
* layout
);
4239 add_global_entry(const Symbol
*);
4242 find_global_entry(const Symbol
*) const;
4245 global_entry_address() const
4247 gold_assert(this->is_data_size_valid());
4248 unsigned int global_entry_off
= (this->end_branch_table_
+ 15) & -16;
4249 return this->address() + global_entry_off
;
4253 // Write to a map file.
4255 do_print_to_mapfile(Mapfile
* mapfile
) const
4256 { mapfile
->print_output_data(this, _("** glink")); }
4260 set_final_data_size();
4264 do_write(Output_file
*);
4266 // Allows access to .got and .plt for do_write.
4267 Target_powerpc
<size
, big_endian
>* targ_
;
4269 // Map sym to stub offset.
4270 typedef Unordered_map
<const Symbol
*, unsigned int> Global_entry_stub_entries
;
4271 Global_entry_stub_entries global_entry_stubs_
;
4273 unsigned int end_branch_table_
, ge_size_
;
4276 template<int size
, bool big_endian
>
4278 Output_data_glink
<size
, big_endian
>::add_eh_frame(Layout
* layout
)
4280 if (!parameters
->options().ld_generated_unwind_info())
4285 if (this->targ_
->abiversion() < 2)
4286 layout
->add_eh_frame_for_plt(this,
4287 Eh_cie
<64>::eh_frame_cie
,
4288 sizeof (Eh_cie
<64>::eh_frame_cie
),
4289 glink_eh_frame_fde_64v1
,
4290 sizeof (glink_eh_frame_fde_64v1
));
4292 layout
->add_eh_frame_for_plt(this,
4293 Eh_cie
<64>::eh_frame_cie
,
4294 sizeof (Eh_cie
<64>::eh_frame_cie
),
4295 glink_eh_frame_fde_64v2
,
4296 sizeof (glink_eh_frame_fde_64v2
));
4300 // 32-bit .glink can use the default since the CIE return
4301 // address reg, LR, is valid.
4302 layout
->add_eh_frame_for_plt(this,
4303 Eh_cie
<32>::eh_frame_cie
,
4304 sizeof (Eh_cie
<32>::eh_frame_cie
),
4306 sizeof (default_fde
));
4307 // Except where LR is used in a PIC __glink_PLTresolve.
4308 if (parameters
->options().output_is_position_independent())
4309 layout
->add_eh_frame_for_plt(this,
4310 Eh_cie
<32>::eh_frame_cie
,
4311 sizeof (Eh_cie
<32>::eh_frame_cie
),
4312 glink_eh_frame_fde_32
,
4313 sizeof (glink_eh_frame_fde_32
));
4317 template<int size
, bool big_endian
>
4319 Output_data_glink
<size
, big_endian
>::add_global_entry(const Symbol
* gsym
)
4321 std::pair
<typename
Global_entry_stub_entries::iterator
, bool> p
4322 = this->global_entry_stubs_
.insert(std::make_pair(gsym
, this->ge_size_
));
4324 this->ge_size_
+= 16;
4327 template<int size
, bool big_endian
>
4328 typename Output_data_glink
<size
, big_endian
>::Address
4329 Output_data_glink
<size
, big_endian
>::find_global_entry(const Symbol
* gsym
) const
4331 typename
Global_entry_stub_entries::const_iterator p
4332 = this->global_entry_stubs_
.find(gsym
);
4333 return p
== this->global_entry_stubs_
.end() ? invalid_address
: p
->second
;
4336 template<int size
, bool big_endian
>
4338 Output_data_glink
<size
, big_endian
>::set_final_data_size()
4340 unsigned int count
= this->targ_
->plt_entry_count();
4341 section_size_type total
= 0;
4347 // space for branch table
4348 total
+= 4 * (count
- 1);
4350 total
+= -total
& 15;
4351 total
+= this->pltresolve_size
;
4355 total
+= this->pltresolve_size
;
4357 // space for branch table
4359 if (this->targ_
->abiversion() < 2)
4363 total
+= 4 * (count
- 0x8000);
4367 this->end_branch_table_
= total
;
4368 total
= (total
+ 15) & -16;
4369 total
+= this->ge_size_
;
4371 this->set_data_size(total
);
4374 // Write out plt and long branch stub code.
4376 template<int size
, bool big_endian
>
4378 Stub_table
<size
, big_endian
>::do_write(Output_file
* of
)
4380 if (this->plt_call_stubs_
.empty()
4381 && this->long_branch_stubs_
.empty())
4384 const section_size_type start_off
= this->offset();
4385 const section_size_type off
= this->stub_offset();
4386 const section_size_type oview_size
=
4387 convert_to_section_size_type(this->data_size() - (off
- start_off
));
4388 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
4393 const Output_data_got_powerpc
<size
, big_endian
>* got
4394 = this->targ_
->got_section();
4395 Address got_os_addr
= got
->output_section()->address();
4397 if (!this->plt_call_stubs_
.empty())
4399 // The base address of the .plt section.
4400 Address plt_base
= this->targ_
->plt_section()->address();
4401 Address iplt_base
= invalid_address
;
4403 // Write out plt call stubs.
4404 typename
Plt_stub_entries::const_iterator cs
;
4405 for (cs
= this->plt_call_stubs_
.begin();
4406 cs
!= this->plt_call_stubs_
.end();
4410 Address pltoff
= this->plt_off(cs
, &is_iplt
);
4411 Address plt_addr
= pltoff
;
4414 if (iplt_base
== invalid_address
)
4415 iplt_base
= this->targ_
->iplt_section()->address();
4416 plt_addr
+= iplt_base
;
4419 plt_addr
+= plt_base
;
4420 const Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
4421 <const Powerpc_relobj
<size
, big_endian
>*>(cs
->first
.object_
);
4422 Address got_addr
= got_os_addr
+ ppcobj
->toc_base_offset();
4423 Address off
= plt_addr
- got_addr
;
4425 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
4426 gold_error(_("%s: linkage table error against `%s'"),
4427 cs
->first
.object_
->name().c_str(),
4428 cs
->first
.sym_
->demangled_name().c_str());
4430 bool plt_load_toc
= this->targ_
->abiversion() < 2;
4432 = plt_load_toc
&& parameters
->options().plt_static_chain();
4434 = plt_load_toc
&& this->targ_
->plt_thread_safe();
4435 bool use_fake_dep
= false;
4436 Address cmp_branch_off
= 0;
4439 unsigned int pltindex
4440 = ((pltoff
- this->targ_
->first_plt_entry_offset())
4441 / this->targ_
->plt_entry_size());
4443 = (this->targ_
->glink_section()->pltresolve_size
4445 if (pltindex
> 32768)
4446 glinkoff
+= (pltindex
- 32768) * 4;
4448 = this->targ_
->glink_section()->address() + glinkoff
;
4450 = (this->stub_address() + cs
->second
+ 24
4451 + 4 * (ha(off
) != 0)
4452 + 4 * (ha(off
+ 8 + 8 * static_chain
) != ha(off
))
4453 + 4 * static_chain
);
4454 cmp_branch_off
= to
- from
;
4455 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
4458 p
= oview
+ cs
->second
;
4461 write_insn
<big_endian
>(p
, std_2_1
+ this->targ_
->stk_toc());
4465 write_insn
<big_endian
>(p
, addis_11_2
+ ha(off
));
4467 write_insn
<big_endian
>(p
, ld_12_11
+ l(off
));
4472 write_insn
<big_endian
>(p
, addis_12_2
+ ha(off
));
4474 write_insn
<big_endian
>(p
, ld_12_12
+ l(off
));
4478 && ha(off
+ 8 + 8 * static_chain
) != ha(off
))
4480 write_insn
<big_endian
>(p
, addi_11_11
+ l(off
));
4484 write_insn
<big_endian
>(p
, mtctr_12
);
4490 write_insn
<big_endian
>(p
, xor_2_12_12
);
4492 write_insn
<big_endian
>(p
, add_11_11_2
);
4495 write_insn
<big_endian
>(p
, ld_2_11
+ l(off
+ 8));
4499 write_insn
<big_endian
>(p
, ld_11_11
+ l(off
+ 16));
4506 write_insn
<big_endian
>(p
, std_2_1
+ this->targ_
->stk_toc());
4508 write_insn
<big_endian
>(p
, ld_12_2
+ l(off
));
4511 && ha(off
+ 8 + 8 * static_chain
) != ha(off
))
4513 write_insn
<big_endian
>(p
, addi_2_2
+ l(off
));
4517 write_insn
<big_endian
>(p
, mtctr_12
);
4523 write_insn
<big_endian
>(p
, xor_11_12_12
);
4525 write_insn
<big_endian
>(p
, add_2_2_11
);
4530 write_insn
<big_endian
>(p
, ld_11_2
+ l(off
+ 16));
4533 write_insn
<big_endian
>(p
, ld_2_2
+ l(off
+ 8));
4537 if (thread_safe
&& !use_fake_dep
)
4539 write_insn
<big_endian
>(p
, cmpldi_2_0
);
4541 write_insn
<big_endian
>(p
, bnectr_p4
);
4543 write_insn
<big_endian
>(p
, b
| (cmp_branch_off
& 0x3fffffc));
4546 write_insn
<big_endian
>(p
, bctr
);
4550 // Write out long branch stubs.
4551 typename
Branch_stub_entries::const_iterator bs
;
4552 for (bs
= this->long_branch_stubs_
.begin();
4553 bs
!= this->long_branch_stubs_
.end();
4556 if (bs
->first
.save_res_
)
4558 p
= oview
+ this->plt_size_
+ bs
->second
;
4559 Address loc
= this->stub_address() + this->plt_size_
+ bs
->second
;
4560 Address delta
= bs
->first
.dest_
- loc
;
4561 if (delta
+ (1 << 25) < 2 << 25)
4562 write_insn
<big_endian
>(p
, b
| (delta
& 0x3fffffc));
4566 = this->targ_
->find_branch_lookup_table(bs
->first
.dest_
);
4567 gold_assert(brlt_addr
!= invalid_address
);
4568 brlt_addr
+= this->targ_
->brlt_section()->address();
4569 Address got_addr
= got_os_addr
+ bs
->first
.toc_base_off_
;
4570 Address brltoff
= brlt_addr
- got_addr
;
4571 if (ha(brltoff
) == 0)
4573 write_insn
<big_endian
>(p
, ld_12_2
+ l(brltoff
)), p
+= 4;
4577 write_insn
<big_endian
>(p
, addis_12_2
+ ha(brltoff
)), p
+= 4;
4578 write_insn
<big_endian
>(p
, ld_12_12
+ l(brltoff
)), p
+= 4;
4580 write_insn
<big_endian
>(p
, mtctr_12
), p
+= 4;
4581 write_insn
<big_endian
>(p
, bctr
);
4587 if (!this->plt_call_stubs_
.empty())
4589 // The base address of the .plt section.
4590 Address plt_base
= this->targ_
->plt_section()->address();
4591 Address iplt_base
= invalid_address
;
4592 // The address of _GLOBAL_OFFSET_TABLE_.
4593 Address g_o_t
= invalid_address
;
4595 // Write out plt call stubs.
4596 typename
Plt_stub_entries::const_iterator cs
;
4597 for (cs
= this->plt_call_stubs_
.begin();
4598 cs
!= this->plt_call_stubs_
.end();
4602 Address plt_addr
= this->plt_off(cs
, &is_iplt
);
4605 if (iplt_base
== invalid_address
)
4606 iplt_base
= this->targ_
->iplt_section()->address();
4607 plt_addr
+= iplt_base
;
4610 plt_addr
+= plt_base
;
4612 p
= oview
+ cs
->second
;
4613 if (parameters
->options().output_is_position_independent())
4616 const Powerpc_relobj
<size
, big_endian
>* ppcobj
4617 = (static_cast<const Powerpc_relobj
<size
, big_endian
>*>
4618 (cs
->first
.object_
));
4619 if (ppcobj
!= NULL
&& cs
->first
.addend_
>= 32768)
4621 unsigned int got2
= ppcobj
->got2_shndx();
4622 got_addr
= ppcobj
->get_output_section_offset(got2
);
4623 gold_assert(got_addr
!= invalid_address
);
4624 got_addr
+= (ppcobj
->output_section(got2
)->address()
4625 + cs
->first
.addend_
);
4629 if (g_o_t
== invalid_address
)
4631 const Output_data_got_powerpc
<size
, big_endian
>* got
4632 = this->targ_
->got_section();
4633 g_o_t
= got
->address() + got
->g_o_t();
4638 Address off
= plt_addr
- got_addr
;
4641 write_insn
<big_endian
>(p
+ 0, lwz_11_30
+ l(off
));
4642 write_insn
<big_endian
>(p
+ 4, mtctr_11
);
4643 write_insn
<big_endian
>(p
+ 8, bctr
);
4647 write_insn
<big_endian
>(p
+ 0, addis_11_30
+ ha(off
));
4648 write_insn
<big_endian
>(p
+ 4, lwz_11_11
+ l(off
));
4649 write_insn
<big_endian
>(p
+ 8, mtctr_11
);
4650 write_insn
<big_endian
>(p
+ 12, bctr
);
4655 write_insn
<big_endian
>(p
+ 0, lis_11
+ ha(plt_addr
));
4656 write_insn
<big_endian
>(p
+ 4, lwz_11_11
+ l(plt_addr
));
4657 write_insn
<big_endian
>(p
+ 8, mtctr_11
);
4658 write_insn
<big_endian
>(p
+ 12, bctr
);
4663 // Write out long branch stubs.
4664 typename
Branch_stub_entries::const_iterator bs
;
4665 for (bs
= this->long_branch_stubs_
.begin();
4666 bs
!= this->long_branch_stubs_
.end();
4669 if (bs
->first
.save_res_
)
4671 p
= oview
+ this->plt_size_
+ bs
->second
;
4672 Address loc
= this->stub_address() + this->plt_size_
+ bs
->second
;
4673 Address delta
= bs
->first
.dest_
- loc
;
4674 if (delta
+ (1 << 25) < 2 << 25)
4675 write_insn
<big_endian
>(p
, b
| (delta
& 0x3fffffc));
4676 else if (!parameters
->options().output_is_position_independent())
4678 write_insn
<big_endian
>(p
+ 0, lis_12
+ ha(bs
->first
.dest_
));
4679 write_insn
<big_endian
>(p
+ 4, addi_12_12
+ l(bs
->first
.dest_
));
4680 write_insn
<big_endian
>(p
+ 8, mtctr_12
);
4681 write_insn
<big_endian
>(p
+ 12, bctr
);
4686 write_insn
<big_endian
>(p
+ 0, mflr_0
);
4687 write_insn
<big_endian
>(p
+ 4, bcl_20_31
);
4688 write_insn
<big_endian
>(p
+ 8, mflr_12
);
4689 write_insn
<big_endian
>(p
+ 12, addis_12_12
+ ha(delta
));
4690 write_insn
<big_endian
>(p
+ 16, addi_12_12
+ l(delta
));
4691 write_insn
<big_endian
>(p
+ 20, mtlr_0
);
4692 write_insn
<big_endian
>(p
+ 24, mtctr_12
);
4693 write_insn
<big_endian
>(p
+ 28, bctr
);
4697 if (this->need_save_res_
)
4699 p
= oview
+ this->plt_size_
+ this->branch_size_
;
4700 memcpy (p
, this->targ_
->savres_section()->contents(),
4701 this->targ_
->savres_section()->data_size());
4705 // Write out .glink.
4707 template<int size
, bool big_endian
>
4709 Output_data_glink
<size
, big_endian
>::do_write(Output_file
* of
)
4711 const section_size_type off
= this->offset();
4712 const section_size_type oview_size
=
4713 convert_to_section_size_type(this->data_size());
4714 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
4717 // The base address of the .plt section.
4718 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
4719 Address plt_base
= this->targ_
->plt_section()->address();
4723 if (this->end_branch_table_
!= 0)
4725 // Write pltresolve stub.
4727 Address after_bcl
= this->address() + 16;
4728 Address pltoff
= plt_base
- after_bcl
;
4730 elfcpp::Swap
<64, big_endian
>::writeval(p
, pltoff
), p
+= 8;
4732 if (this->targ_
->abiversion() < 2)
4734 write_insn
<big_endian
>(p
, mflr_12
), p
+= 4;
4735 write_insn
<big_endian
>(p
, bcl_20_31
), p
+= 4;
4736 write_insn
<big_endian
>(p
, mflr_11
), p
+= 4;
4737 write_insn
<big_endian
>(p
, ld_2_11
+ l(-16)), p
+= 4;
4738 write_insn
<big_endian
>(p
, mtlr_12
), p
+= 4;
4739 write_insn
<big_endian
>(p
, add_11_2_11
), p
+= 4;
4740 write_insn
<big_endian
>(p
, ld_12_11
+ 0), p
+= 4;
4741 write_insn
<big_endian
>(p
, ld_2_11
+ 8), p
+= 4;
4742 write_insn
<big_endian
>(p
, mtctr_12
), p
+= 4;
4743 write_insn
<big_endian
>(p
, ld_11_11
+ 16), p
+= 4;
4747 write_insn
<big_endian
>(p
, mflr_0
), p
+= 4;
4748 write_insn
<big_endian
>(p
, bcl_20_31
), p
+= 4;
4749 write_insn
<big_endian
>(p
, mflr_11
), p
+= 4;
4750 write_insn
<big_endian
>(p
, ld_2_11
+ l(-16)), p
+= 4;
4751 write_insn
<big_endian
>(p
, mtlr_0
), p
+= 4;
4752 write_insn
<big_endian
>(p
, sub_12_12_11
), p
+= 4;
4753 write_insn
<big_endian
>(p
, add_11_2_11
), p
+= 4;
4754 write_insn
<big_endian
>(p
, addi_0_12
+ l(-48)), p
+= 4;
4755 write_insn
<big_endian
>(p
, ld_12_11
+ 0), p
+= 4;
4756 write_insn
<big_endian
>(p
, srdi_0_0_2
), p
+= 4;
4757 write_insn
<big_endian
>(p
, mtctr_12
), p
+= 4;
4758 write_insn
<big_endian
>(p
, ld_11_11
+ 8), p
+= 4;
4760 write_insn
<big_endian
>(p
, bctr
), p
+= 4;
4761 while (p
< oview
+ this->pltresolve_size
)
4762 write_insn
<big_endian
>(p
, nop
), p
+= 4;
4764 // Write lazy link call stubs.
4766 while (p
< oview
+ this->end_branch_table_
)
4768 if (this->targ_
->abiversion() < 2)
4772 write_insn
<big_endian
>(p
, li_0_0
+ indx
), p
+= 4;
4776 write_insn
<big_endian
>(p
, lis_0
+ hi(indx
)), p
+= 4;
4777 write_insn
<big_endian
>(p
, ori_0_0_0
+ l(indx
)), p
+= 4;
4780 uint32_t branch_off
= 8 - (p
- oview
);
4781 write_insn
<big_endian
>(p
, b
+ (branch_off
& 0x3fffffc)), p
+= 4;
4786 Address plt_base
= this->targ_
->plt_section()->address();
4787 Address iplt_base
= invalid_address
;
4788 unsigned int global_entry_off
= (this->end_branch_table_
+ 15) & -16;
4789 Address global_entry_base
= this->address() + global_entry_off
;
4790 typename
Global_entry_stub_entries::const_iterator ge
;
4791 for (ge
= this->global_entry_stubs_
.begin();
4792 ge
!= this->global_entry_stubs_
.end();
4795 p
= oview
+ global_entry_off
+ ge
->second
;
4796 Address plt_addr
= ge
->first
->plt_offset();
4797 if (ge
->first
->type() == elfcpp::STT_GNU_IFUNC
4798 && ge
->first
->can_use_relative_reloc(false))
4800 if (iplt_base
== invalid_address
)
4801 iplt_base
= this->targ_
->iplt_section()->address();
4802 plt_addr
+= iplt_base
;
4805 plt_addr
+= plt_base
;
4806 Address my_addr
= global_entry_base
+ ge
->second
;
4807 Address off
= plt_addr
- my_addr
;
4809 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
4810 gold_error(_("%s: linkage table error against `%s'"),
4811 ge
->first
->object()->name().c_str(),
4812 ge
->first
->demangled_name().c_str());
4814 write_insn
<big_endian
>(p
, addis_12_12
+ ha(off
)), p
+= 4;
4815 write_insn
<big_endian
>(p
, ld_12_12
+ l(off
)), p
+= 4;
4816 write_insn
<big_endian
>(p
, mtctr_12
), p
+= 4;
4817 write_insn
<big_endian
>(p
, bctr
);
4822 const Output_data_got_powerpc
<size
, big_endian
>* got
4823 = this->targ_
->got_section();
4824 // The address of _GLOBAL_OFFSET_TABLE_.
4825 Address g_o_t
= got
->address() + got
->g_o_t();
4827 // Write out pltresolve branch table.
4829 unsigned int the_end
= oview_size
- this->pltresolve_size
;
4830 unsigned char* end_p
= oview
+ the_end
;
4831 while (p
< end_p
- 8 * 4)
4832 write_insn
<big_endian
>(p
, b
+ end_p
- p
), p
+= 4;
4834 write_insn
<big_endian
>(p
, nop
), p
+= 4;
4836 // Write out pltresolve call stub.
4837 if (parameters
->options().output_is_position_independent())
4839 Address res0_off
= 0;
4840 Address after_bcl_off
= the_end
+ 12;
4841 Address bcl_res0
= after_bcl_off
- res0_off
;
4843 write_insn
<big_endian
>(p
+ 0, addis_11_11
+ ha(bcl_res0
));
4844 write_insn
<big_endian
>(p
+ 4, mflr_0
);
4845 write_insn
<big_endian
>(p
+ 8, bcl_20_31
);
4846 write_insn
<big_endian
>(p
+ 12, addi_11_11
+ l(bcl_res0
));
4847 write_insn
<big_endian
>(p
+ 16, mflr_12
);
4848 write_insn
<big_endian
>(p
+ 20, mtlr_0
);
4849 write_insn
<big_endian
>(p
+ 24, sub_11_11_12
);
4851 Address got_bcl
= g_o_t
+ 4 - (after_bcl_off
+ this->address());
4853 write_insn
<big_endian
>(p
+ 28, addis_12_12
+ ha(got_bcl
));
4854 if (ha(got_bcl
) == ha(got_bcl
+ 4))
4856 write_insn
<big_endian
>(p
+ 32, lwz_0_12
+ l(got_bcl
));
4857 write_insn
<big_endian
>(p
+ 36, lwz_12_12
+ l(got_bcl
+ 4));
4861 write_insn
<big_endian
>(p
+ 32, lwzu_0_12
+ l(got_bcl
));
4862 write_insn
<big_endian
>(p
+ 36, lwz_12_12
+ 4);
4864 write_insn
<big_endian
>(p
+ 40, mtctr_0
);
4865 write_insn
<big_endian
>(p
+ 44, add_0_11_11
);
4866 write_insn
<big_endian
>(p
+ 48, add_11_0_11
);
4867 write_insn
<big_endian
>(p
+ 52, bctr
);
4868 write_insn
<big_endian
>(p
+ 56, nop
);
4869 write_insn
<big_endian
>(p
+ 60, nop
);
4873 Address res0
= this->address();
4875 write_insn
<big_endian
>(p
+ 0, lis_12
+ ha(g_o_t
+ 4));
4876 write_insn
<big_endian
>(p
+ 4, addis_11_11
+ ha(-res0
));
4877 if (ha(g_o_t
+ 4) == ha(g_o_t
+ 8))
4878 write_insn
<big_endian
>(p
+ 8, lwz_0_12
+ l(g_o_t
+ 4));
4880 write_insn
<big_endian
>(p
+ 8, lwzu_0_12
+ l(g_o_t
+ 4));
4881 write_insn
<big_endian
>(p
+ 12, addi_11_11
+ l(-res0
));
4882 write_insn
<big_endian
>(p
+ 16, mtctr_0
);
4883 write_insn
<big_endian
>(p
+ 20, add_0_11_11
);
4884 if (ha(g_o_t
+ 4) == ha(g_o_t
+ 8))
4885 write_insn
<big_endian
>(p
+ 24, lwz_12_12
+ l(g_o_t
+ 8));
4887 write_insn
<big_endian
>(p
+ 24, lwz_12_12
+ 4);
4888 write_insn
<big_endian
>(p
+ 28, add_11_0_11
);
4889 write_insn
<big_endian
>(p
+ 32, bctr
);
4890 write_insn
<big_endian
>(p
+ 36, nop
);
4891 write_insn
<big_endian
>(p
+ 40, nop
);
4892 write_insn
<big_endian
>(p
+ 44, nop
);
4893 write_insn
<big_endian
>(p
+ 48, nop
);
4894 write_insn
<big_endian
>(p
+ 52, nop
);
4895 write_insn
<big_endian
>(p
+ 56, nop
);
4896 write_insn
<big_endian
>(p
+ 60, nop
);
4901 of
->write_output_view(off
, oview_size
, oview
);
4905 // A class to handle linker generated save/restore functions.
4907 template<int size
, bool big_endian
>
4908 class Output_data_save_res
: public Output_section_data_build
4911 Output_data_save_res(Symbol_table
* symtab
);
4913 const unsigned char*
4920 // Write to a map file.
4922 do_print_to_mapfile(Mapfile
* mapfile
) const
4923 { mapfile
->print_output_data(this, _("** save/restore")); }
4926 do_write(Output_file
*);
4929 // The maximum size of save/restore contents.
4930 static const unsigned int savres_max
= 218*4;
4933 savres_define(Symbol_table
* symtab
,
4935 unsigned int lo
, unsigned int hi
,
4936 unsigned char* write_ent(unsigned char*, int),
4937 unsigned char* write_tail(unsigned char*, int));
4939 unsigned char *contents_
;
4942 template<bool big_endian
>
4943 static unsigned char*
4944 savegpr0(unsigned char* p
, int r
)
4946 uint32_t insn
= std_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4947 write_insn
<big_endian
>(p
, insn
);
4951 template<bool big_endian
>
4952 static unsigned char*
4953 savegpr0_tail(unsigned char* p
, int r
)
4955 p
= savegpr0
<big_endian
>(p
, r
);
4956 uint32_t insn
= std_0_1
+ 16;
4957 write_insn
<big_endian
>(p
, insn
);
4959 write_insn
<big_endian
>(p
, blr
);
4963 template<bool big_endian
>
4964 static unsigned char*
4965 restgpr0(unsigned char* p
, int r
)
4967 uint32_t insn
= ld_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4968 write_insn
<big_endian
>(p
, insn
);
4972 template<bool big_endian
>
4973 static unsigned char*
4974 restgpr0_tail(unsigned char* p
, int r
)
4976 uint32_t insn
= ld_0_1
+ 16;
4977 write_insn
<big_endian
>(p
, insn
);
4979 p
= restgpr0
<big_endian
>(p
, r
);
4980 write_insn
<big_endian
>(p
, mtlr_0
);
4984 p
= restgpr0
<big_endian
>(p
, 30);
4985 p
= restgpr0
<big_endian
>(p
, 31);
4987 write_insn
<big_endian
>(p
, blr
);
4991 template<bool big_endian
>
4992 static unsigned char*
4993 savegpr1(unsigned char* p
, int r
)
4995 uint32_t insn
= std_0_12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4996 write_insn
<big_endian
>(p
, insn
);
5000 template<bool big_endian
>
5001 static unsigned char*
5002 savegpr1_tail(unsigned char* p
, int r
)
5004 p
= savegpr1
<big_endian
>(p
, r
);
5005 write_insn
<big_endian
>(p
, blr
);
5009 template<bool big_endian
>
5010 static unsigned char*
5011 restgpr1(unsigned char* p
, int r
)
5013 uint32_t insn
= ld_0_12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
5014 write_insn
<big_endian
>(p
, insn
);
5018 template<bool big_endian
>
5019 static unsigned char*
5020 restgpr1_tail(unsigned char* p
, int r
)
5022 p
= restgpr1
<big_endian
>(p
, r
);
5023 write_insn
<big_endian
>(p
, blr
);
5027 template<bool big_endian
>
5028 static unsigned char*
5029 savefpr(unsigned char* p
, int r
)
5031 uint32_t insn
= stfd_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
5032 write_insn
<big_endian
>(p
, insn
);
5036 template<bool big_endian
>
5037 static unsigned char*
5038 savefpr0_tail(unsigned char* p
, int r
)
5040 p
= savefpr
<big_endian
>(p
, r
);
5041 write_insn
<big_endian
>(p
, std_0_1
+ 16);
5043 write_insn
<big_endian
>(p
, blr
);
5047 template<bool big_endian
>
5048 static unsigned char*
5049 restfpr(unsigned char* p
, int r
)
5051 uint32_t insn
= lfd_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
5052 write_insn
<big_endian
>(p
, insn
);
5056 template<bool big_endian
>
5057 static unsigned char*
5058 restfpr0_tail(unsigned char* p
, int r
)
5060 write_insn
<big_endian
>(p
, ld_0_1
+ 16);
5062 p
= restfpr
<big_endian
>(p
, r
);
5063 write_insn
<big_endian
>(p
, mtlr_0
);
5067 p
= restfpr
<big_endian
>(p
, 30);
5068 p
= restfpr
<big_endian
>(p
, 31);
5070 write_insn
<big_endian
>(p
, blr
);
5074 template<bool big_endian
>
5075 static unsigned char*
5076 savefpr1_tail(unsigned char* p
, int r
)
5078 p
= savefpr
<big_endian
>(p
, r
);
5079 write_insn
<big_endian
>(p
, blr
);
5083 template<bool big_endian
>
5084 static unsigned char*
5085 restfpr1_tail(unsigned char* p
, int r
)
5087 p
= restfpr
<big_endian
>(p
, r
);
5088 write_insn
<big_endian
>(p
, blr
);
5092 template<bool big_endian
>
5093 static unsigned char*
5094 savevr(unsigned char* p
, int r
)
5096 uint32_t insn
= li_12_0
+ (1 << 16) - (32 - r
) * 16;
5097 write_insn
<big_endian
>(p
, insn
);
5099 insn
= stvx_0_12_0
+ (r
<< 21);
5100 write_insn
<big_endian
>(p
, insn
);
5104 template<bool big_endian
>
5105 static unsigned char*
5106 savevr_tail(unsigned char* p
, int r
)
5108 p
= savevr
<big_endian
>(p
, r
);
5109 write_insn
<big_endian
>(p
, blr
);
5113 template<bool big_endian
>
5114 static unsigned char*
5115 restvr(unsigned char* p
, int r
)
5117 uint32_t insn
= li_12_0
+ (1 << 16) - (32 - r
) * 16;
5118 write_insn
<big_endian
>(p
, insn
);
5120 insn
= lvx_0_12_0
+ (r
<< 21);
5121 write_insn
<big_endian
>(p
, insn
);
5125 template<bool big_endian
>
5126 static unsigned char*
5127 restvr_tail(unsigned char* p
, int r
)
5129 p
= restvr
<big_endian
>(p
, r
);
5130 write_insn
<big_endian
>(p
, blr
);
5135 template<int size
, bool big_endian
>
5136 Output_data_save_res
<size
, big_endian
>::Output_data_save_res(
5137 Symbol_table
* symtab
)
5138 : Output_section_data_build(4),
5141 this->savres_define(symtab
,
5142 "_savegpr0_", 14, 31,
5143 savegpr0
<big_endian
>, savegpr0_tail
<big_endian
>);
5144 this->savres_define(symtab
,
5145 "_restgpr0_", 14, 29,
5146 restgpr0
<big_endian
>, restgpr0_tail
<big_endian
>);
5147 this->savres_define(symtab
,
5148 "_restgpr0_", 30, 31,
5149 restgpr0
<big_endian
>, restgpr0_tail
<big_endian
>);
5150 this->savres_define(symtab
,
5151 "_savegpr1_", 14, 31,
5152 savegpr1
<big_endian
>, savegpr1_tail
<big_endian
>);
5153 this->savres_define(symtab
,
5154 "_restgpr1_", 14, 31,
5155 restgpr1
<big_endian
>, restgpr1_tail
<big_endian
>);
5156 this->savres_define(symtab
,
5157 "_savefpr_", 14, 31,
5158 savefpr
<big_endian
>, savefpr0_tail
<big_endian
>);
5159 this->savres_define(symtab
,
5160 "_restfpr_", 14, 29,
5161 restfpr
<big_endian
>, restfpr0_tail
<big_endian
>);
5162 this->savres_define(symtab
,
5163 "_restfpr_", 30, 31,
5164 restfpr
<big_endian
>, restfpr0_tail
<big_endian
>);
5165 this->savres_define(symtab
,
5167 savefpr
<big_endian
>, savefpr1_tail
<big_endian
>);
5168 this->savres_define(symtab
,
5170 restfpr
<big_endian
>, restfpr1_tail
<big_endian
>);
5171 this->savres_define(symtab
,
5173 savevr
<big_endian
>, savevr_tail
<big_endian
>);
5174 this->savres_define(symtab
,
5176 restvr
<big_endian
>, restvr_tail
<big_endian
>);
5179 template<int size
, bool big_endian
>
5181 Output_data_save_res
<size
, big_endian
>::savres_define(
5182 Symbol_table
* symtab
,
5184 unsigned int lo
, unsigned int hi
,
5185 unsigned char* write_ent(unsigned char*, int),
5186 unsigned char* write_tail(unsigned char*, int))
5188 size_t len
= strlen(name
);
5189 bool writing
= false;
5192 memcpy(sym
, name
, len
);
5195 for (unsigned int i
= lo
; i
<= hi
; i
++)
5197 sym
[len
+ 0] = i
/ 10 + '0';
5198 sym
[len
+ 1] = i
% 10 + '0';
5199 Symbol
* gsym
= symtab
->lookup(sym
);
5200 bool refd
= gsym
!= NULL
&& gsym
->is_undefined();
5201 writing
= writing
|| refd
;
5204 if (this->contents_
== NULL
)
5205 this->contents_
= new unsigned char[this->savres_max
];
5207 section_size_type value
= this->current_data_size();
5208 unsigned char* p
= this->contents_
+ value
;
5210 p
= write_ent(p
, i
);
5212 p
= write_tail(p
, i
);
5213 section_size_type cur_size
= p
- this->contents_
;
5214 this->set_current_data_size(cur_size
);
5216 symtab
->define_in_output_data(sym
, NULL
, Symbol_table::PREDEFINED
,
5217 this, value
, cur_size
- value
,
5218 elfcpp::STT_FUNC
, elfcpp::STB_GLOBAL
,
5219 elfcpp::STV_HIDDEN
, 0, false, false);
5224 // Write out save/restore.
5226 template<int size
, bool big_endian
>
5228 Output_data_save_res
<size
, big_endian
>::do_write(Output_file
* of
)
5230 const section_size_type off
= this->offset();
5231 const section_size_type oview_size
=
5232 convert_to_section_size_type(this->data_size());
5233 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
5234 memcpy(oview
, this->contents_
, oview_size
);
5235 of
->write_output_view(off
, oview_size
, oview
);
5239 // Create the glink section.
5241 template<int size
, bool big_endian
>
5243 Target_powerpc
<size
, big_endian
>::make_glink_section(Layout
* layout
)
5245 if (this->glink_
== NULL
)
5247 this->glink_
= new Output_data_glink
<size
, big_endian
>(this);
5248 this->glink_
->add_eh_frame(layout
);
5249 layout
->add_output_section_data(".text", elfcpp::SHT_PROGBITS
,
5250 elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
,
5251 this->glink_
, ORDER_TEXT
, false);
5255 // Create a PLT entry for a global symbol.
5257 template<int size
, bool big_endian
>
5259 Target_powerpc
<size
, big_endian
>::make_plt_entry(Symbol_table
* symtab
,
5263 if (gsym
->type() == elfcpp::STT_GNU_IFUNC
5264 && gsym
->can_use_relative_reloc(false))
5266 if (this->iplt_
== NULL
)
5267 this->make_iplt_section(symtab
, layout
);
5268 this->iplt_
->add_ifunc_entry(gsym
);
5272 if (this->plt_
== NULL
)
5273 this->make_plt_section(symtab
, layout
);
5274 this->plt_
->add_entry(gsym
);
5278 // Make a PLT entry for a local STT_GNU_IFUNC symbol.
5280 template<int size
, bool big_endian
>
5282 Target_powerpc
<size
, big_endian
>::make_local_ifunc_plt_entry(
5283 Symbol_table
* symtab
,
5285 Sized_relobj_file
<size
, big_endian
>* relobj
,
5288 if (this->iplt_
== NULL
)
5289 this->make_iplt_section(symtab
, layout
);
5290 this->iplt_
->add_local_ifunc_entry(relobj
, r_sym
);
5293 // Return the number of entries in the PLT.
5295 template<int size
, bool big_endian
>
5297 Target_powerpc
<size
, big_endian
>::plt_entry_count() const
5299 if (this->plt_
== NULL
)
5301 return this->plt_
->entry_count();
5304 // Create a GOT entry for local dynamic __tls_get_addr calls.
5306 template<int size
, bool big_endian
>
5308 Target_powerpc
<size
, big_endian
>::tlsld_got_offset(
5309 Symbol_table
* symtab
,
5311 Sized_relobj_file
<size
, big_endian
>* object
)
5313 if (this->tlsld_got_offset_
== -1U)
5315 gold_assert(symtab
!= NULL
&& layout
!= NULL
&& object
!= NULL
);
5316 Reloc_section
* rela_dyn
= this->rela_dyn_section(layout
);
5317 Output_data_got_powerpc
<size
, big_endian
>* got
5318 = this->got_section(symtab
, layout
);
5319 unsigned int got_offset
= got
->add_constant_pair(0, 0);
5320 rela_dyn
->add_local(object
, 0, elfcpp::R_POWERPC_DTPMOD
, got
,
5322 this->tlsld_got_offset_
= got_offset
;
5324 return this->tlsld_got_offset_
;
5327 // Get the Reference_flags for a particular relocation.
5329 template<int size
, bool big_endian
>
5331 Target_powerpc
<size
, big_endian
>::Scan::get_reference_flags(
5332 unsigned int r_type
,
5333 const Target_powerpc
* target
)
5339 case elfcpp::R_POWERPC_NONE
:
5340 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
5341 case elfcpp::R_POWERPC_GNU_VTENTRY
:
5342 case elfcpp::R_PPC64_TOC
:
5343 // No symbol reference.
5346 case elfcpp::R_PPC64_ADDR64
:
5347 case elfcpp::R_PPC64_UADDR64
:
5348 case elfcpp::R_POWERPC_ADDR32
:
5349 case elfcpp::R_POWERPC_UADDR32
:
5350 case elfcpp::R_POWERPC_ADDR16
:
5351 case elfcpp::R_POWERPC_UADDR16
:
5352 case elfcpp::R_POWERPC_ADDR16_LO
:
5353 case elfcpp::R_POWERPC_ADDR16_HI
:
5354 case elfcpp::R_POWERPC_ADDR16_HA
:
5355 ref
= Symbol::ABSOLUTE_REF
;
5358 case elfcpp::R_POWERPC_ADDR24
:
5359 case elfcpp::R_POWERPC_ADDR14
:
5360 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
5361 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
5362 ref
= Symbol::FUNCTION_CALL
| Symbol::ABSOLUTE_REF
;
5365 case elfcpp::R_PPC64_REL64
:
5366 case elfcpp::R_POWERPC_REL32
:
5367 case elfcpp::R_PPC_LOCAL24PC
:
5368 case elfcpp::R_POWERPC_REL16
:
5369 case elfcpp::R_POWERPC_REL16_LO
:
5370 case elfcpp::R_POWERPC_REL16_HI
:
5371 case elfcpp::R_POWERPC_REL16_HA
:
5372 ref
= Symbol::RELATIVE_REF
;
5375 case elfcpp::R_POWERPC_REL24
:
5376 case elfcpp::R_PPC_PLTREL24
:
5377 case elfcpp::R_POWERPC_REL14
:
5378 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
5379 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
5380 ref
= Symbol::FUNCTION_CALL
| Symbol::RELATIVE_REF
;
5383 case elfcpp::R_POWERPC_GOT16
:
5384 case elfcpp::R_POWERPC_GOT16_LO
:
5385 case elfcpp::R_POWERPC_GOT16_HI
:
5386 case elfcpp::R_POWERPC_GOT16_HA
:
5387 case elfcpp::R_PPC64_GOT16_DS
:
5388 case elfcpp::R_PPC64_GOT16_LO_DS
:
5389 case elfcpp::R_PPC64_TOC16
:
5390 case elfcpp::R_PPC64_TOC16_LO
:
5391 case elfcpp::R_PPC64_TOC16_HI
:
5392 case elfcpp::R_PPC64_TOC16_HA
:
5393 case elfcpp::R_PPC64_TOC16_DS
:
5394 case elfcpp::R_PPC64_TOC16_LO_DS
:
5395 ref
= Symbol::RELATIVE_REF
;
5398 case elfcpp::R_POWERPC_GOT_TPREL16
:
5399 case elfcpp::R_POWERPC_TLS
:
5400 ref
= Symbol::TLS_REF
;
5403 case elfcpp::R_POWERPC_COPY
:
5404 case elfcpp::R_POWERPC_GLOB_DAT
:
5405 case elfcpp::R_POWERPC_JMP_SLOT
:
5406 case elfcpp::R_POWERPC_RELATIVE
:
5407 case elfcpp::R_POWERPC_DTPMOD
:
5409 // Not expected. We will give an error later.
5413 if (size
== 64 && target
->abiversion() < 2)
5414 ref
|= Symbol::FUNC_DESC_ABI
;
5418 // Report an unsupported relocation against a local symbol.
5420 template<int size
, bool big_endian
>
5422 Target_powerpc
<size
, big_endian
>::Scan::unsupported_reloc_local(
5423 Sized_relobj_file
<size
, big_endian
>* object
,
5424 unsigned int r_type
)
5426 gold_error(_("%s: unsupported reloc %u against local symbol"),
5427 object
->name().c_str(), r_type
);
5430 // We are about to emit a dynamic relocation of type R_TYPE. If the
5431 // dynamic linker does not support it, issue an error.
5433 template<int size
, bool big_endian
>
5435 Target_powerpc
<size
, big_endian
>::Scan::check_non_pic(Relobj
* object
,
5436 unsigned int r_type
)
5438 gold_assert(r_type
!= elfcpp::R_POWERPC_NONE
);
5440 // These are the relocation types supported by glibc for both 32-bit
5441 // and 64-bit powerpc.
5444 case elfcpp::R_POWERPC_NONE
:
5445 case elfcpp::R_POWERPC_RELATIVE
:
5446 case elfcpp::R_POWERPC_GLOB_DAT
:
5447 case elfcpp::R_POWERPC_DTPMOD
:
5448 case elfcpp::R_POWERPC_DTPREL
:
5449 case elfcpp::R_POWERPC_TPREL
:
5450 case elfcpp::R_POWERPC_JMP_SLOT
:
5451 case elfcpp::R_POWERPC_COPY
:
5452 case elfcpp::R_POWERPC_IRELATIVE
:
5453 case elfcpp::R_POWERPC_ADDR32
:
5454 case elfcpp::R_POWERPC_UADDR32
:
5455 case elfcpp::R_POWERPC_ADDR24
:
5456 case elfcpp::R_POWERPC_ADDR16
:
5457 case elfcpp::R_POWERPC_UADDR16
:
5458 case elfcpp::R_POWERPC_ADDR16_LO
:
5459 case elfcpp::R_POWERPC_ADDR16_HI
:
5460 case elfcpp::R_POWERPC_ADDR16_HA
:
5461 case elfcpp::R_POWERPC_ADDR14
:
5462 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
5463 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
5464 case elfcpp::R_POWERPC_REL32
:
5465 case elfcpp::R_POWERPC_REL24
:
5466 case elfcpp::R_POWERPC_TPREL16
:
5467 case elfcpp::R_POWERPC_TPREL16_LO
:
5468 case elfcpp::R_POWERPC_TPREL16_HI
:
5469 case elfcpp::R_POWERPC_TPREL16_HA
:
5480 // These are the relocation types supported only on 64-bit.
5481 case elfcpp::R_PPC64_ADDR64
:
5482 case elfcpp::R_PPC64_UADDR64
:
5483 case elfcpp::R_PPC64_JMP_IREL
:
5484 case elfcpp::R_PPC64_ADDR16_DS
:
5485 case elfcpp::R_PPC64_ADDR16_LO_DS
:
5486 case elfcpp::R_PPC64_ADDR16_HIGH
:
5487 case elfcpp::R_PPC64_ADDR16_HIGHA
:
5488 case elfcpp::R_PPC64_ADDR16_HIGHER
:
5489 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
5490 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
5491 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
5492 case elfcpp::R_PPC64_REL64
:
5493 case elfcpp::R_POWERPC_ADDR30
:
5494 case elfcpp::R_PPC64_TPREL16_DS
:
5495 case elfcpp::R_PPC64_TPREL16_LO_DS
:
5496 case elfcpp::R_PPC64_TPREL16_HIGH
:
5497 case elfcpp::R_PPC64_TPREL16_HIGHA
:
5498 case elfcpp::R_PPC64_TPREL16_HIGHER
:
5499 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
5500 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
5501 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
5512 // These are the relocation types supported only on 32-bit.
5513 // ??? glibc ld.so doesn't need to support these.
5514 case elfcpp::R_POWERPC_DTPREL16
:
5515 case elfcpp::R_POWERPC_DTPREL16_LO
:
5516 case elfcpp::R_POWERPC_DTPREL16_HI
:
5517 case elfcpp::R_POWERPC_DTPREL16_HA
:
5525 // This prevents us from issuing more than one error per reloc
5526 // section. But we can still wind up issuing more than one
5527 // error per object file.
5528 if (this->issued_non_pic_error_
)
5530 gold_assert(parameters
->options().output_is_position_independent());
5531 object
->error(_("requires unsupported dynamic reloc; "
5532 "recompile with -fPIC"));
5533 this->issued_non_pic_error_
= true;
5537 // Return whether we need to make a PLT entry for a relocation of the
5538 // given type against a STT_GNU_IFUNC symbol.
5540 template<int size
, bool big_endian
>
5542 Target_powerpc
<size
, big_endian
>::Scan::reloc_needs_plt_for_ifunc(
5543 Target_powerpc
<size
, big_endian
>* target
,
5544 Sized_relobj_file
<size
, big_endian
>* object
,
5545 unsigned int r_type
,
5548 // In non-pic code any reference will resolve to the plt call stub
5549 // for the ifunc symbol.
5550 if ((size
== 32 || target
->abiversion() >= 2)
5551 && !parameters
->options().output_is_position_independent())
5556 // Word size refs from data sections are OK, but don't need a PLT entry.
5557 case elfcpp::R_POWERPC_ADDR32
:
5558 case elfcpp::R_POWERPC_UADDR32
:
5563 case elfcpp::R_PPC64_ADDR64
:
5564 case elfcpp::R_PPC64_UADDR64
:
5569 // GOT refs are good, but also don't need a PLT entry.
5570 case elfcpp::R_POWERPC_GOT16
:
5571 case elfcpp::R_POWERPC_GOT16_LO
:
5572 case elfcpp::R_POWERPC_GOT16_HI
:
5573 case elfcpp::R_POWERPC_GOT16_HA
:
5574 case elfcpp::R_PPC64_GOT16_DS
:
5575 case elfcpp::R_PPC64_GOT16_LO_DS
:
5578 // Function calls are good, and these do need a PLT entry.
5579 case elfcpp::R_POWERPC_ADDR24
:
5580 case elfcpp::R_POWERPC_ADDR14
:
5581 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
5582 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
5583 case elfcpp::R_POWERPC_REL24
:
5584 case elfcpp::R_PPC_PLTREL24
:
5585 case elfcpp::R_POWERPC_REL14
:
5586 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
5587 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
5594 // Anything else is a problem.
5595 // If we are building a static executable, the libc startup function
5596 // responsible for applying indirect function relocations is going
5597 // to complain about the reloc type.
5598 // If we are building a dynamic executable, we will have a text
5599 // relocation. The dynamic loader will set the text segment
5600 // writable and non-executable to apply text relocations. So we'll
5601 // segfault when trying to run the indirection function to resolve
5604 gold_error(_("%s: unsupported reloc %u for IFUNC symbol"),
5605 object
->name().c_str(), r_type
);
5609 // Scan a relocation for a local symbol.
5611 template<int size
, bool big_endian
>
5613 Target_powerpc
<size
, big_endian
>::Scan::local(
5614 Symbol_table
* symtab
,
5616 Target_powerpc
<size
, big_endian
>* target
,
5617 Sized_relobj_file
<size
, big_endian
>* object
,
5618 unsigned int data_shndx
,
5619 Output_section
* output_section
,
5620 const elfcpp::Rela
<size
, big_endian
>& reloc
,
5621 unsigned int r_type
,
5622 const elfcpp::Sym
<size
, big_endian
>& lsym
,
5625 this->maybe_skip_tls_get_addr_call(r_type
, NULL
);
5627 if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
5628 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
5630 this->expect_tls_get_addr_call();
5631 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(true);
5632 if (tls_type
!= tls::TLSOPT_NONE
)
5633 this->skip_next_tls_get_addr_call();
5635 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
5636 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
5638 this->expect_tls_get_addr_call();
5639 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
5640 if (tls_type
!= tls::TLSOPT_NONE
)
5641 this->skip_next_tls_get_addr_call();
5644 Powerpc_relobj
<size
, big_endian
>* ppc_object
5645 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
5650 && data_shndx
== ppc_object
->opd_shndx()
5651 && r_type
== elfcpp::R_PPC64_ADDR64
)
5652 ppc_object
->set_opd_discard(reloc
.get_r_offset());
5656 // A local STT_GNU_IFUNC symbol may require a PLT entry.
5657 bool is_ifunc
= lsym
.get_st_type() == elfcpp::STT_GNU_IFUNC
;
5658 if (is_ifunc
&& this->reloc_needs_plt_for_ifunc(target
, object
, r_type
, true))
5660 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5661 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
5662 r_type
, r_sym
, reloc
.get_r_addend());
5663 target
->make_local_ifunc_plt_entry(symtab
, layout
, object
, r_sym
);
5668 case elfcpp::R_POWERPC_NONE
:
5669 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
5670 case elfcpp::R_POWERPC_GNU_VTENTRY
:
5671 case elfcpp::R_PPC64_TOCSAVE
:
5672 case elfcpp::R_POWERPC_TLS
:
5673 case elfcpp::R_PPC64_ENTRY
:
5676 case elfcpp::R_PPC64_TOC
:
5678 Output_data_got_powerpc
<size
, big_endian
>* got
5679 = target
->got_section(symtab
, layout
);
5680 if (parameters
->options().output_is_position_independent())
5682 Address off
= reloc
.get_r_offset();
5684 && target
->abiversion() < 2
5685 && data_shndx
== ppc_object
->opd_shndx()
5686 && ppc_object
->get_opd_discard(off
- 8))
5689 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5690 Powerpc_relobj
<size
, big_endian
>* symobj
= ppc_object
;
5691 rela_dyn
->add_output_section_relative(got
->output_section(),
5692 elfcpp::R_POWERPC_RELATIVE
,
5694 object
, data_shndx
, off
,
5695 symobj
->toc_base_offset());
5700 case elfcpp::R_PPC64_ADDR64
:
5701 case elfcpp::R_PPC64_UADDR64
:
5702 case elfcpp::R_POWERPC_ADDR32
:
5703 case elfcpp::R_POWERPC_UADDR32
:
5704 case elfcpp::R_POWERPC_ADDR24
:
5705 case elfcpp::R_POWERPC_ADDR16
:
5706 case elfcpp::R_POWERPC_ADDR16_LO
:
5707 case elfcpp::R_POWERPC_ADDR16_HI
:
5708 case elfcpp::R_POWERPC_ADDR16_HA
:
5709 case elfcpp::R_POWERPC_UADDR16
:
5710 case elfcpp::R_PPC64_ADDR16_HIGH
:
5711 case elfcpp::R_PPC64_ADDR16_HIGHA
:
5712 case elfcpp::R_PPC64_ADDR16_HIGHER
:
5713 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
5714 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
5715 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
5716 case elfcpp::R_PPC64_ADDR16_DS
:
5717 case elfcpp::R_PPC64_ADDR16_LO_DS
:
5718 case elfcpp::R_POWERPC_ADDR14
:
5719 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
5720 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
5721 // If building a shared library (or a position-independent
5722 // executable), we need to create a dynamic relocation for
5724 if (parameters
->options().output_is_position_independent()
5725 || (size
== 64 && is_ifunc
&& target
->abiversion() < 2))
5727 Reloc_section
* rela_dyn
= target
->rela_dyn_section(symtab
, layout
,
5729 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5730 if ((size
== 32 && r_type
== elfcpp::R_POWERPC_ADDR32
)
5731 || (size
== 64 && r_type
== elfcpp::R_PPC64_ADDR64
))
5733 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
5734 : elfcpp::R_POWERPC_RELATIVE
);
5735 rela_dyn
->add_local_relative(object
, r_sym
, dynrel
,
5736 output_section
, data_shndx
,
5737 reloc
.get_r_offset(),
5738 reloc
.get_r_addend(), false);
5740 else if (lsym
.get_st_type() != elfcpp::STT_SECTION
)
5742 check_non_pic(object
, r_type
);
5743 rela_dyn
->add_local(object
, r_sym
, r_type
, output_section
,
5744 data_shndx
, reloc
.get_r_offset(),
5745 reloc
.get_r_addend());
5749 gold_assert(lsym
.get_st_value() == 0);
5750 unsigned int shndx
= lsym
.get_st_shndx();
5752 shndx
= object
->adjust_sym_shndx(r_sym
, shndx
,
5755 object
->error(_("section symbol %u has bad shndx %u"),
5758 rela_dyn
->add_local_section(object
, shndx
, r_type
,
5759 output_section
, data_shndx
,
5760 reloc
.get_r_offset());
5765 case elfcpp::R_POWERPC_REL24
:
5766 case elfcpp::R_PPC_PLTREL24
:
5767 case elfcpp::R_PPC_LOCAL24PC
:
5768 case elfcpp::R_POWERPC_REL14
:
5769 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
5770 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
5772 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
5773 r_type
, elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
5774 reloc
.get_r_addend());
5777 case elfcpp::R_PPC64_REL64
:
5778 case elfcpp::R_POWERPC_REL32
:
5779 case elfcpp::R_POWERPC_REL16
:
5780 case elfcpp::R_POWERPC_REL16_LO
:
5781 case elfcpp::R_POWERPC_REL16_HI
:
5782 case elfcpp::R_POWERPC_REL16_HA
:
5783 case elfcpp::R_POWERPC_REL16DX_HA
:
5784 case elfcpp::R_POWERPC_SECTOFF
:
5785 case elfcpp::R_POWERPC_SECTOFF_LO
:
5786 case elfcpp::R_POWERPC_SECTOFF_HI
:
5787 case elfcpp::R_POWERPC_SECTOFF_HA
:
5788 case elfcpp::R_PPC64_SECTOFF_DS
:
5789 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
5790 case elfcpp::R_POWERPC_TPREL16
:
5791 case elfcpp::R_POWERPC_TPREL16_LO
:
5792 case elfcpp::R_POWERPC_TPREL16_HI
:
5793 case elfcpp::R_POWERPC_TPREL16_HA
:
5794 case elfcpp::R_PPC64_TPREL16_DS
:
5795 case elfcpp::R_PPC64_TPREL16_LO_DS
:
5796 case elfcpp::R_PPC64_TPREL16_HIGH
:
5797 case elfcpp::R_PPC64_TPREL16_HIGHA
:
5798 case elfcpp::R_PPC64_TPREL16_HIGHER
:
5799 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
5800 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
5801 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
5802 case elfcpp::R_POWERPC_DTPREL16
:
5803 case elfcpp::R_POWERPC_DTPREL16_LO
:
5804 case elfcpp::R_POWERPC_DTPREL16_HI
:
5805 case elfcpp::R_POWERPC_DTPREL16_HA
:
5806 case elfcpp::R_PPC64_DTPREL16_DS
:
5807 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
5808 case elfcpp::R_PPC64_DTPREL16_HIGH
:
5809 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
5810 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
5811 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
5812 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
5813 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
5814 case elfcpp::R_PPC64_TLSGD
:
5815 case elfcpp::R_PPC64_TLSLD
:
5816 case elfcpp::R_PPC64_ADDR64_LOCAL
:
5819 case elfcpp::R_POWERPC_GOT16
:
5820 case elfcpp::R_POWERPC_GOT16_LO
:
5821 case elfcpp::R_POWERPC_GOT16_HI
:
5822 case elfcpp::R_POWERPC_GOT16_HA
:
5823 case elfcpp::R_PPC64_GOT16_DS
:
5824 case elfcpp::R_PPC64_GOT16_LO_DS
:
5826 // The symbol requires a GOT entry.
5827 Output_data_got_powerpc
<size
, big_endian
>* got
5828 = target
->got_section(symtab
, layout
);
5829 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5831 if (!parameters
->options().output_is_position_independent())
5834 && (size
== 32 || target
->abiversion() >= 2))
5835 got
->add_local_plt(object
, r_sym
, GOT_TYPE_STANDARD
);
5837 got
->add_local(object
, r_sym
, GOT_TYPE_STANDARD
);
5839 else if (!object
->local_has_got_offset(r_sym
, GOT_TYPE_STANDARD
))
5841 // If we are generating a shared object or a pie, this
5842 // symbol's GOT entry will be set by a dynamic relocation.
5844 off
= got
->add_constant(0);
5845 object
->set_local_got_offset(r_sym
, GOT_TYPE_STANDARD
, off
);
5847 Reloc_section
* rela_dyn
= target
->rela_dyn_section(symtab
, layout
,
5849 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
5850 : elfcpp::R_POWERPC_RELATIVE
);
5851 rela_dyn
->add_local_relative(object
, r_sym
, dynrel
,
5852 got
, off
, 0, false);
5857 case elfcpp::R_PPC64_TOC16
:
5858 case elfcpp::R_PPC64_TOC16_LO
:
5859 case elfcpp::R_PPC64_TOC16_HI
:
5860 case elfcpp::R_PPC64_TOC16_HA
:
5861 case elfcpp::R_PPC64_TOC16_DS
:
5862 case elfcpp::R_PPC64_TOC16_LO_DS
:
5863 // We need a GOT section.
5864 target
->got_section(symtab
, layout
);
5867 case elfcpp::R_POWERPC_GOT_TLSGD16
:
5868 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
5869 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
5870 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
5872 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(true);
5873 if (tls_type
== tls::TLSOPT_NONE
)
5875 Output_data_got_powerpc
<size
, big_endian
>* got
5876 = target
->got_section(symtab
, layout
);
5877 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5878 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5879 got
->add_local_tls_pair(object
, r_sym
, GOT_TYPE_TLSGD
,
5880 rela_dyn
, elfcpp::R_POWERPC_DTPMOD
);
5882 else if (tls_type
== tls::TLSOPT_TO_LE
)
5884 // no GOT relocs needed for Local Exec.
5891 case elfcpp::R_POWERPC_GOT_TLSLD16
:
5892 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
5893 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
5894 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
5896 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
5897 if (tls_type
== tls::TLSOPT_NONE
)
5898 target
->tlsld_got_offset(symtab
, layout
, object
);
5899 else if (tls_type
== tls::TLSOPT_TO_LE
)
5901 // no GOT relocs needed for Local Exec.
5902 if (parameters
->options().emit_relocs())
5904 Output_section
* os
= layout
->tls_segment()->first_section();
5905 gold_assert(os
!= NULL
);
5906 os
->set_needs_symtab_index();
5914 case elfcpp::R_POWERPC_GOT_DTPREL16
:
5915 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
5916 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
5917 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
5919 Output_data_got_powerpc
<size
, big_endian
>* got
5920 = target
->got_section(symtab
, layout
);
5921 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5922 got
->add_local_tls(object
, r_sym
, GOT_TYPE_DTPREL
);
5926 case elfcpp::R_POWERPC_GOT_TPREL16
:
5927 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
5928 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
5929 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
5931 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(true);
5932 if (tls_type
== tls::TLSOPT_NONE
)
5934 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5935 if (!object
->local_has_got_offset(r_sym
, GOT_TYPE_TPREL
))
5937 Output_data_got_powerpc
<size
, big_endian
>* got
5938 = target
->got_section(symtab
, layout
);
5939 unsigned int off
= got
->add_constant(0);
5940 object
->set_local_got_offset(r_sym
, GOT_TYPE_TPREL
, off
);
5942 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5943 rela_dyn
->add_symbolless_local_addend(object
, r_sym
,
5944 elfcpp::R_POWERPC_TPREL
,
5948 else if (tls_type
== tls::TLSOPT_TO_LE
)
5950 // no GOT relocs needed for Local Exec.
5958 unsupported_reloc_local(object
, r_type
);
5964 case elfcpp::R_POWERPC_GOT_TLSLD16
:
5965 case elfcpp::R_POWERPC_GOT_TLSGD16
:
5966 case elfcpp::R_POWERPC_GOT_TPREL16
:
5967 case elfcpp::R_POWERPC_GOT_DTPREL16
:
5968 case elfcpp::R_POWERPC_GOT16
:
5969 case elfcpp::R_PPC64_GOT16_DS
:
5970 case elfcpp::R_PPC64_TOC16
:
5971 case elfcpp::R_PPC64_TOC16_DS
:
5972 ppc_object
->set_has_small_toc_reloc();
5978 // Report an unsupported relocation against a global symbol.
5980 template<int size
, bool big_endian
>
5982 Target_powerpc
<size
, big_endian
>::Scan::unsupported_reloc_global(
5983 Sized_relobj_file
<size
, big_endian
>* object
,
5984 unsigned int r_type
,
5987 gold_error(_("%s: unsupported reloc %u against global symbol %s"),
5988 object
->name().c_str(), r_type
, gsym
->demangled_name().c_str());
5991 // Scan a relocation for a global symbol.
5993 template<int size
, bool big_endian
>
5995 Target_powerpc
<size
, big_endian
>::Scan::global(
5996 Symbol_table
* symtab
,
5998 Target_powerpc
<size
, big_endian
>* target
,
5999 Sized_relobj_file
<size
, big_endian
>* object
,
6000 unsigned int data_shndx
,
6001 Output_section
* output_section
,
6002 const elfcpp::Rela
<size
, big_endian
>& reloc
,
6003 unsigned int r_type
,
6006 if (this->maybe_skip_tls_get_addr_call(r_type
, gsym
) == Track_tls::SKIP
)
6009 if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
6010 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
6012 this->expect_tls_get_addr_call();
6013 const bool final
= gsym
->final_value_is_known();
6014 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
6015 if (tls_type
!= tls::TLSOPT_NONE
)
6016 this->skip_next_tls_get_addr_call();
6018 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
6019 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
6021 this->expect_tls_get_addr_call();
6022 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
6023 if (tls_type
!= tls::TLSOPT_NONE
)
6024 this->skip_next_tls_get_addr_call();
6027 Powerpc_relobj
<size
, big_endian
>* ppc_object
6028 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
6030 // A STT_GNU_IFUNC symbol may require a PLT entry.
6031 bool is_ifunc
= gsym
->type() == elfcpp::STT_GNU_IFUNC
;
6032 bool pushed_ifunc
= false;
6033 if (is_ifunc
&& this->reloc_needs_plt_for_ifunc(target
, object
, r_type
, true))
6035 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
6036 r_type
, elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
6037 reloc
.get_r_addend());
6038 target
->make_plt_entry(symtab
, layout
, gsym
);
6039 pushed_ifunc
= true;
6044 case elfcpp::R_POWERPC_NONE
:
6045 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
6046 case elfcpp::R_POWERPC_GNU_VTENTRY
:
6047 case elfcpp::R_PPC_LOCAL24PC
:
6048 case elfcpp::R_POWERPC_TLS
:
6049 case elfcpp::R_PPC64_ENTRY
:
6052 case elfcpp::R_PPC64_TOC
:
6054 Output_data_got_powerpc
<size
, big_endian
>* got
6055 = target
->got_section(symtab
, layout
);
6056 if (parameters
->options().output_is_position_independent())
6058 Address off
= reloc
.get_r_offset();
6060 && data_shndx
== ppc_object
->opd_shndx()
6061 && ppc_object
->get_opd_discard(off
- 8))
6064 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
6065 Powerpc_relobj
<size
, big_endian
>* symobj
= ppc_object
;
6066 if (data_shndx
!= ppc_object
->opd_shndx())
6067 symobj
= static_cast
6068 <Powerpc_relobj
<size
, big_endian
>*>(gsym
->object());
6069 rela_dyn
->add_output_section_relative(got
->output_section(),
6070 elfcpp::R_POWERPC_RELATIVE
,
6072 object
, data_shndx
, off
,
6073 symobj
->toc_base_offset());
6078 case elfcpp::R_PPC64_ADDR64
:
6080 && target
->abiversion() < 2
6081 && data_shndx
== ppc_object
->opd_shndx()
6082 && (gsym
->is_defined_in_discarded_section()
6083 || gsym
->object() != object
))
6085 ppc_object
->set_opd_discard(reloc
.get_r_offset());
6089 case elfcpp::R_PPC64_UADDR64
:
6090 case elfcpp::R_POWERPC_ADDR32
:
6091 case elfcpp::R_POWERPC_UADDR32
:
6092 case elfcpp::R_POWERPC_ADDR24
:
6093 case elfcpp::R_POWERPC_ADDR16
:
6094 case elfcpp::R_POWERPC_ADDR16_LO
:
6095 case elfcpp::R_POWERPC_ADDR16_HI
:
6096 case elfcpp::R_POWERPC_ADDR16_HA
:
6097 case elfcpp::R_POWERPC_UADDR16
:
6098 case elfcpp::R_PPC64_ADDR16_HIGH
:
6099 case elfcpp::R_PPC64_ADDR16_HIGHA
:
6100 case elfcpp::R_PPC64_ADDR16_HIGHER
:
6101 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
6102 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
6103 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
6104 case elfcpp::R_PPC64_ADDR16_DS
:
6105 case elfcpp::R_PPC64_ADDR16_LO_DS
:
6106 case elfcpp::R_POWERPC_ADDR14
:
6107 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
6108 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
6110 // Make a PLT entry if necessary.
6111 if (gsym
->needs_plt_entry())
6113 // Since this is not a PC-relative relocation, we may be
6114 // taking the address of a function. In that case we need to
6115 // set the entry in the dynamic symbol table to the address of
6116 // the PLT call stub.
6117 bool need_ifunc_plt
= false;
6118 if ((size
== 32 || target
->abiversion() >= 2)
6119 && gsym
->is_from_dynobj()
6120 && !parameters
->options().output_is_position_independent())
6122 gsym
->set_needs_dynsym_value();
6123 need_ifunc_plt
= true;
6125 if (!is_ifunc
|| (!pushed_ifunc
&& need_ifunc_plt
))
6127 target
->push_branch(ppc_object
, data_shndx
,
6128 reloc
.get_r_offset(), r_type
,
6129 elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
6130 reloc
.get_r_addend());
6131 target
->make_plt_entry(symtab
, layout
, gsym
);
6134 // Make a dynamic relocation if necessary.
6135 if (gsym
->needs_dynamic_reloc(Scan::get_reference_flags(r_type
, target
))
6136 || (size
== 64 && is_ifunc
&& target
->abiversion() < 2))
6138 if (!parameters
->options().output_is_position_independent()
6139 && gsym
->may_need_copy_reloc())
6141 target
->copy_reloc(symtab
, layout
, object
,
6142 data_shndx
, output_section
, gsym
, reloc
);
6144 else if ((((size
== 32
6145 && r_type
== elfcpp::R_POWERPC_ADDR32
)
6147 && r_type
== elfcpp::R_PPC64_ADDR64
6148 && target
->abiversion() >= 2))
6149 && gsym
->can_use_relative_reloc(false)
6150 && !(gsym
->visibility() == elfcpp::STV_PROTECTED
6151 && parameters
->options().shared()))
6153 && r_type
== elfcpp::R_PPC64_ADDR64
6154 && target
->abiversion() < 2
6155 && (gsym
->can_use_relative_reloc(false)
6156 || data_shndx
== ppc_object
->opd_shndx())))
6158 Reloc_section
* rela_dyn
6159 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
6160 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
6161 : elfcpp::R_POWERPC_RELATIVE
);
6162 rela_dyn
->add_symbolless_global_addend(
6163 gsym
, dynrel
, output_section
, object
, data_shndx
,
6164 reloc
.get_r_offset(), reloc
.get_r_addend());
6168 Reloc_section
* rela_dyn
6169 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
6170 check_non_pic(object
, r_type
);
6171 rela_dyn
->add_global(gsym
, r_type
, output_section
,
6173 reloc
.get_r_offset(),
6174 reloc
.get_r_addend());
6180 case elfcpp::R_PPC_PLTREL24
:
6181 case elfcpp::R_POWERPC_REL24
:
6184 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
6186 elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
6187 reloc
.get_r_addend());
6188 if (gsym
->needs_plt_entry()
6189 || (!gsym
->final_value_is_known()
6190 && (gsym
->is_undefined()
6191 || gsym
->is_from_dynobj()
6192 || gsym
->is_preemptible())))
6193 target
->make_plt_entry(symtab
, layout
, gsym
);
6197 case elfcpp::R_PPC64_REL64
:
6198 case elfcpp::R_POWERPC_REL32
:
6199 // Make a dynamic relocation if necessary.
6200 if (gsym
->needs_dynamic_reloc(Scan::get_reference_flags(r_type
, target
)))
6202 if (!parameters
->options().output_is_position_independent()
6203 && gsym
->may_need_copy_reloc())
6205 target
->copy_reloc(symtab
, layout
, object
,
6206 data_shndx
, output_section
, gsym
,
6211 Reloc_section
* rela_dyn
6212 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
6213 check_non_pic(object
, r_type
);
6214 rela_dyn
->add_global(gsym
, r_type
, output_section
, object
,
6215 data_shndx
, reloc
.get_r_offset(),
6216 reloc
.get_r_addend());
6221 case elfcpp::R_POWERPC_REL14
:
6222 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
6223 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
6225 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
6226 r_type
, elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
6227 reloc
.get_r_addend());
6230 case elfcpp::R_POWERPC_REL16
:
6231 case elfcpp::R_POWERPC_REL16_LO
:
6232 case elfcpp::R_POWERPC_REL16_HI
:
6233 case elfcpp::R_POWERPC_REL16_HA
:
6234 case elfcpp::R_POWERPC_REL16DX_HA
:
6235 case elfcpp::R_POWERPC_SECTOFF
:
6236 case elfcpp::R_POWERPC_SECTOFF_LO
:
6237 case elfcpp::R_POWERPC_SECTOFF_HI
:
6238 case elfcpp::R_POWERPC_SECTOFF_HA
:
6239 case elfcpp::R_PPC64_SECTOFF_DS
:
6240 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
6241 case elfcpp::R_POWERPC_TPREL16
:
6242 case elfcpp::R_POWERPC_TPREL16_LO
:
6243 case elfcpp::R_POWERPC_TPREL16_HI
:
6244 case elfcpp::R_POWERPC_TPREL16_HA
:
6245 case elfcpp::R_PPC64_TPREL16_DS
:
6246 case elfcpp::R_PPC64_TPREL16_LO_DS
:
6247 case elfcpp::R_PPC64_TPREL16_HIGH
:
6248 case elfcpp::R_PPC64_TPREL16_HIGHA
:
6249 case elfcpp::R_PPC64_TPREL16_HIGHER
:
6250 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
6251 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
6252 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
6253 case elfcpp::R_POWERPC_DTPREL16
:
6254 case elfcpp::R_POWERPC_DTPREL16_LO
:
6255 case elfcpp::R_POWERPC_DTPREL16_HI
:
6256 case elfcpp::R_POWERPC_DTPREL16_HA
:
6257 case elfcpp::R_PPC64_DTPREL16_DS
:
6258 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
6259 case elfcpp::R_PPC64_DTPREL16_HIGH
:
6260 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
6261 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
6262 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
6263 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
6264 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
6265 case elfcpp::R_PPC64_TLSGD
:
6266 case elfcpp::R_PPC64_TLSLD
:
6267 case elfcpp::R_PPC64_ADDR64_LOCAL
:
6270 case elfcpp::R_POWERPC_GOT16
:
6271 case elfcpp::R_POWERPC_GOT16_LO
:
6272 case elfcpp::R_POWERPC_GOT16_HI
:
6273 case elfcpp::R_POWERPC_GOT16_HA
:
6274 case elfcpp::R_PPC64_GOT16_DS
:
6275 case elfcpp::R_PPC64_GOT16_LO_DS
:
6277 // The symbol requires a GOT entry.
6278 Output_data_got_powerpc
<size
, big_endian
>* got
;
6280 got
= target
->got_section(symtab
, layout
);
6281 if (gsym
->final_value_is_known())
6284 && (size
== 32 || target
->abiversion() >= 2))
6285 got
->add_global_plt(gsym
, GOT_TYPE_STANDARD
);
6287 got
->add_global(gsym
, GOT_TYPE_STANDARD
);
6289 else if (!gsym
->has_got_offset(GOT_TYPE_STANDARD
))
6291 // If we are generating a shared object or a pie, this
6292 // symbol's GOT entry will be set by a dynamic relocation.
6293 unsigned int off
= got
->add_constant(0);
6294 gsym
->set_got_offset(GOT_TYPE_STANDARD
, off
);
6296 Reloc_section
* rela_dyn
6297 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
6299 if (gsym
->can_use_relative_reloc(false)
6301 || target
->abiversion() >= 2)
6302 && gsym
->visibility() == elfcpp::STV_PROTECTED
6303 && parameters
->options().shared()))
6305 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
6306 : elfcpp::R_POWERPC_RELATIVE
);
6307 rela_dyn
->add_global_relative(gsym
, dynrel
, got
, off
, 0, false);
6311 unsigned int dynrel
= elfcpp::R_POWERPC_GLOB_DAT
;
6312 rela_dyn
->add_global(gsym
, dynrel
, got
, off
, 0);
6318 case elfcpp::R_PPC64_TOC16
:
6319 case elfcpp::R_PPC64_TOC16_LO
:
6320 case elfcpp::R_PPC64_TOC16_HI
:
6321 case elfcpp::R_PPC64_TOC16_HA
:
6322 case elfcpp::R_PPC64_TOC16_DS
:
6323 case elfcpp::R_PPC64_TOC16_LO_DS
:
6324 // We need a GOT section.
6325 target
->got_section(symtab
, layout
);
6328 case elfcpp::R_POWERPC_GOT_TLSGD16
:
6329 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
6330 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
6331 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
6333 const bool final
= gsym
->final_value_is_known();
6334 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
6335 if (tls_type
== tls::TLSOPT_NONE
)
6337 Output_data_got_powerpc
<size
, big_endian
>* got
6338 = target
->got_section(symtab
, layout
);
6339 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
6340 got
->add_global_pair_with_rel(gsym
, GOT_TYPE_TLSGD
, rela_dyn
,
6341 elfcpp::R_POWERPC_DTPMOD
,
6342 elfcpp::R_POWERPC_DTPREL
);
6344 else if (tls_type
== tls::TLSOPT_TO_IE
)
6346 if (!gsym
->has_got_offset(GOT_TYPE_TPREL
))
6348 Output_data_got_powerpc
<size
, big_endian
>* got
6349 = target
->got_section(symtab
, layout
);
6350 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
6351 if (gsym
->is_undefined()
6352 || gsym
->is_from_dynobj())
6354 got
->add_global_with_rel(gsym
, GOT_TYPE_TPREL
, rela_dyn
,
6355 elfcpp::R_POWERPC_TPREL
);
6359 unsigned int off
= got
->add_constant(0);
6360 gsym
->set_got_offset(GOT_TYPE_TPREL
, off
);
6361 unsigned int dynrel
= elfcpp::R_POWERPC_TPREL
;
6362 rela_dyn
->add_symbolless_global_addend(gsym
, dynrel
,
6367 else if (tls_type
== tls::TLSOPT_TO_LE
)
6369 // no GOT relocs needed for Local Exec.
6376 case elfcpp::R_POWERPC_GOT_TLSLD16
:
6377 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
6378 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
6379 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
6381 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
6382 if (tls_type
== tls::TLSOPT_NONE
)
6383 target
->tlsld_got_offset(symtab
, layout
, object
);
6384 else if (tls_type
== tls::TLSOPT_TO_LE
)
6386 // no GOT relocs needed for Local Exec.
6387 if (parameters
->options().emit_relocs())
6389 Output_section
* os
= layout
->tls_segment()->first_section();
6390 gold_assert(os
!= NULL
);
6391 os
->set_needs_symtab_index();
6399 case elfcpp::R_POWERPC_GOT_DTPREL16
:
6400 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
6401 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
6402 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
6404 Output_data_got_powerpc
<size
, big_endian
>* got
6405 = target
->got_section(symtab
, layout
);
6406 if (!gsym
->final_value_is_known()
6407 && (gsym
->is_from_dynobj()
6408 || gsym
->is_undefined()
6409 || gsym
->is_preemptible()))
6410 got
->add_global_with_rel(gsym
, GOT_TYPE_DTPREL
,
6411 target
->rela_dyn_section(layout
),
6412 elfcpp::R_POWERPC_DTPREL
);
6414 got
->add_global_tls(gsym
, GOT_TYPE_DTPREL
);
6418 case elfcpp::R_POWERPC_GOT_TPREL16
:
6419 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
6420 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
6421 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
6423 const bool final
= gsym
->final_value_is_known();
6424 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
6425 if (tls_type
== tls::TLSOPT_NONE
)
6427 if (!gsym
->has_got_offset(GOT_TYPE_TPREL
))
6429 Output_data_got_powerpc
<size
, big_endian
>* got
6430 = target
->got_section(symtab
, layout
);
6431 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
6432 if (gsym
->is_undefined()
6433 || gsym
->is_from_dynobj())
6435 got
->add_global_with_rel(gsym
, GOT_TYPE_TPREL
, rela_dyn
,
6436 elfcpp::R_POWERPC_TPREL
);
6440 unsigned int off
= got
->add_constant(0);
6441 gsym
->set_got_offset(GOT_TYPE_TPREL
, off
);
6442 unsigned int dynrel
= elfcpp::R_POWERPC_TPREL
;
6443 rela_dyn
->add_symbolless_global_addend(gsym
, dynrel
,
6448 else if (tls_type
== tls::TLSOPT_TO_LE
)
6450 // no GOT relocs needed for Local Exec.
6458 unsupported_reloc_global(object
, r_type
, gsym
);
6464 case elfcpp::R_POWERPC_GOT_TLSLD16
:
6465 case elfcpp::R_POWERPC_GOT_TLSGD16
:
6466 case elfcpp::R_POWERPC_GOT_TPREL16
:
6467 case elfcpp::R_POWERPC_GOT_DTPREL16
:
6468 case elfcpp::R_POWERPC_GOT16
:
6469 case elfcpp::R_PPC64_GOT16_DS
:
6470 case elfcpp::R_PPC64_TOC16
:
6471 case elfcpp::R_PPC64_TOC16_DS
:
6472 ppc_object
->set_has_small_toc_reloc();
6478 // Process relocations for gc.
6480 template<int size
, bool big_endian
>
6482 Target_powerpc
<size
, big_endian
>::gc_process_relocs(
6483 Symbol_table
* symtab
,
6485 Sized_relobj_file
<size
, big_endian
>* object
,
6486 unsigned int data_shndx
,
6488 const unsigned char* prelocs
,
6490 Output_section
* output_section
,
6491 bool needs_special_offset_handling
,
6492 size_t local_symbol_count
,
6493 const unsigned char* plocal_symbols
)
6495 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
6496 typedef gold::Default_classify_reloc
<elfcpp::SHT_RELA
, size
, big_endian
>
6499 Powerpc_relobj
<size
, big_endian
>* ppc_object
6500 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
6502 ppc_object
->set_opd_valid();
6503 if (size
== 64 && data_shndx
== ppc_object
->opd_shndx())
6505 typename Powerpc_relobj
<size
, big_endian
>::Access_from::iterator p
;
6506 for (p
= ppc_object
->access_from_map()->begin();
6507 p
!= ppc_object
->access_from_map()->end();
6510 Address dst_off
= p
->first
;
6511 unsigned int dst_indx
= ppc_object
->get_opd_ent(dst_off
);
6512 typename Powerpc_relobj
<size
, big_endian
>::Section_refs::iterator s
;
6513 for (s
= p
->second
.begin(); s
!= p
->second
.end(); ++s
)
6515 Relobj
* src_obj
= s
->first
;
6516 unsigned int src_indx
= s
->second
;
6517 symtab
->gc()->add_reference(src_obj
, src_indx
,
6518 ppc_object
, dst_indx
);
6522 ppc_object
->access_from_map()->clear();
6523 ppc_object
->process_gc_mark(symtab
);
6524 // Don't look at .opd relocs as .opd will reference everything.
6528 gold::gc_process_relocs
<size
, big_endian
, Powerpc
, Scan
, Classify_reloc
>(
6537 needs_special_offset_handling
,
6542 // Handle target specific gc actions when adding a gc reference from
6543 // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX
6544 // and DST_OFF. For powerpc64, this adds a referenc to the code
6545 // section of a function descriptor.
6547 template<int size
, bool big_endian
>
6549 Target_powerpc
<size
, big_endian
>::do_gc_add_reference(
6550 Symbol_table
* symtab
,
6552 unsigned int src_shndx
,
6554 unsigned int dst_shndx
,
6555 Address dst_off
) const
6557 if (size
!= 64 || dst_obj
->is_dynamic())
6560 Powerpc_relobj
<size
, big_endian
>* ppc_object
6561 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(dst_obj
);
6562 if (dst_shndx
!= 0 && dst_shndx
== ppc_object
->opd_shndx())
6564 if (ppc_object
->opd_valid())
6566 dst_shndx
= ppc_object
->get_opd_ent(dst_off
);
6567 symtab
->gc()->add_reference(src_obj
, src_shndx
, dst_obj
, dst_shndx
);
6571 // If we haven't run scan_opd_relocs, we must delay
6572 // processing this function descriptor reference.
6573 ppc_object
->add_reference(src_obj
, src_shndx
, dst_off
);
6578 // Add any special sections for this symbol to the gc work list.
6579 // For powerpc64, this adds the code section of a function
6582 template<int size
, bool big_endian
>
6584 Target_powerpc
<size
, big_endian
>::do_gc_mark_symbol(
6585 Symbol_table
* symtab
,
6590 Powerpc_relobj
<size
, big_endian
>* ppc_object
6591 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(sym
->object());
6593 unsigned int shndx
= sym
->shndx(&is_ordinary
);
6594 if (is_ordinary
&& shndx
!= 0 && shndx
== ppc_object
->opd_shndx())
6596 Sized_symbol
<size
>* gsym
= symtab
->get_sized_symbol
<size
>(sym
);
6597 Address dst_off
= gsym
->value();
6598 if (ppc_object
->opd_valid())
6600 unsigned int dst_indx
= ppc_object
->get_opd_ent(dst_off
);
6601 symtab
->gc()->worklist().push_back(Section_id(ppc_object
,
6605 ppc_object
->add_gc_mark(dst_off
);
6610 // For a symbol location in .opd, set LOC to the location of the
6613 template<int size
, bool big_endian
>
6615 Target_powerpc
<size
, big_endian
>::do_function_location(
6616 Symbol_location
* loc
) const
6618 if (size
== 64 && loc
->shndx
!= 0)
6620 if (loc
->object
->is_dynamic())
6622 Powerpc_dynobj
<size
, big_endian
>* ppc_object
6623 = static_cast<Powerpc_dynobj
<size
, big_endian
>*>(loc
->object
);
6624 if (loc
->shndx
== ppc_object
->opd_shndx())
6627 Address off
= loc
->offset
- ppc_object
->opd_address();
6628 loc
->shndx
= ppc_object
->get_opd_ent(off
, &dest_off
);
6629 loc
->offset
= dest_off
;
6634 const Powerpc_relobj
<size
, big_endian
>* ppc_object
6635 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>(loc
->object
);
6636 if (loc
->shndx
== ppc_object
->opd_shndx())
6639 loc
->shndx
= ppc_object
->get_opd_ent(loc
->offset
, &dest_off
);
6640 loc
->offset
= dest_off
;
6646 // FNOFFSET in section SHNDX in OBJECT is the start of a function
6647 // compiled with -fsplit-stack. The function calls non-split-stack
6648 // code. Change the function to ensure it has enough stack space to
6649 // call some random function.
6651 template<int size
, bool big_endian
>
6653 Target_powerpc
<size
, big_endian
>::do_calls_non_split(
6656 section_offset_type fnoffset
,
6657 section_size_type fnsize
,
6658 const unsigned char* prelocs
,
6660 unsigned char* view
,
6661 section_size_type view_size
,
6663 std::string
* to
) const
6665 // 32-bit not supported.
6669 Target::do_calls_non_split(object
, shndx
, fnoffset
, fnsize
,
6670 prelocs
, reloc_count
, view
, view_size
,
6675 // The function always starts with
6676 // ld %r0,-0x7000-64(%r13) # tcbhead_t.__private_ss
6677 // addis %r12,%r1,-allocate@ha
6678 // addi %r12,%r12,-allocate@l
6680 // but note that the addis or addi may be replaced with a nop
6682 unsigned char *entry
= view
+ fnoffset
;
6683 uint32_t insn
= elfcpp::Swap
<32, big_endian
>::readval(entry
);
6685 if ((insn
& 0xffff0000) == addis_2_12
)
6687 /* Skip ELFv2 global entry code. */
6689 insn
= elfcpp::Swap
<32, big_endian
>::readval(entry
);
6692 unsigned char *pinsn
= entry
;
6694 const uint32_t ld_private_ss
= 0xe80d8fc0;
6695 if (insn
== ld_private_ss
)
6697 int32_t allocate
= 0;
6701 insn
= elfcpp::Swap
<32, big_endian
>::readval(pinsn
);
6702 if ((insn
& 0xffff0000) == addis_12_1
)
6703 allocate
+= (insn
& 0xffff) << 16;
6704 else if ((insn
& 0xffff0000) == addi_12_1
6705 || (insn
& 0xffff0000) == addi_12_12
)
6706 allocate
+= ((insn
& 0xffff) ^ 0x8000) - 0x8000;
6707 else if (insn
!= nop
)
6710 if (insn
== cmpld_7_12_0
&& pinsn
== entry
+ 12)
6712 int extra
= parameters
->options().split_stack_adjust_size();
6714 if (allocate
>= 0 || extra
< 0)
6716 object
->error(_("split-stack stack size overflow at "
6717 "section %u offset %0zx"),
6718 shndx
, static_cast<size_t>(fnoffset
));
6722 insn
= addis_12_1
| (((allocate
+ 0x8000) >> 16) & 0xffff);
6723 if (insn
!= addis_12_1
)
6725 elfcpp::Swap
<32, big_endian
>::writeval(pinsn
, insn
);
6727 insn
= addi_12_12
| (allocate
& 0xffff);
6728 if (insn
!= addi_12_12
)
6730 elfcpp::Swap
<32, big_endian
>::writeval(pinsn
, insn
);
6736 insn
= addi_12_1
| (allocate
& 0xffff);
6737 elfcpp::Swap
<32, big_endian
>::writeval(pinsn
, insn
);
6740 if (pinsn
!= entry
+ 12)
6741 elfcpp::Swap
<32, big_endian
>::writeval(pinsn
, nop
);
6749 if (!object
->has_no_split_stack())
6750 object
->error(_("failed to match split-stack sequence at "
6751 "section %u offset %0zx"),
6752 shndx
, static_cast<size_t>(fnoffset
));
6756 // Scan relocations for a section.
6758 template<int size
, bool big_endian
>
6760 Target_powerpc
<size
, big_endian
>::scan_relocs(
6761 Symbol_table
* symtab
,
6763 Sized_relobj_file
<size
, big_endian
>* object
,
6764 unsigned int data_shndx
,
6765 unsigned int sh_type
,
6766 const unsigned char* prelocs
,
6768 Output_section
* output_section
,
6769 bool needs_special_offset_handling
,
6770 size_t local_symbol_count
,
6771 const unsigned char* plocal_symbols
)
6773 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
6774 typedef gold::Default_classify_reloc
<elfcpp::SHT_RELA
, size
, big_endian
>
6777 if (sh_type
== elfcpp::SHT_REL
)
6779 gold_error(_("%s: unsupported REL reloc section"),
6780 object
->name().c_str());
6784 gold::scan_relocs
<size
, big_endian
, Powerpc
, Scan
, Classify_reloc
>(
6793 needs_special_offset_handling
,
6798 // Functor class for processing the global symbol table.
6799 // Removes symbols defined on discarded opd entries.
6801 template<bool big_endian
>
6802 class Global_symbol_visitor_opd
6805 Global_symbol_visitor_opd()
6809 operator()(Sized_symbol
<64>* sym
)
6811 if (sym
->has_symtab_index()
6812 || sym
->source() != Symbol::FROM_OBJECT
6813 || !sym
->in_real_elf())
6816 if (sym
->object()->is_dynamic())
6819 Powerpc_relobj
<64, big_endian
>* symobj
6820 = static_cast<Powerpc_relobj
<64, big_endian
>*>(sym
->object());
6821 if (symobj
->opd_shndx() == 0)
6825 unsigned int shndx
= sym
->shndx(&is_ordinary
);
6826 if (shndx
== symobj
->opd_shndx()
6827 && symobj
->get_opd_discard(sym
->value()))
6829 sym
->set_undefined();
6830 sym
->set_visibility(elfcpp::STV_DEFAULT
);
6831 sym
->set_is_defined_in_discarded_section();
6832 sym
->set_symtab_index(-1U);
6837 template<int size
, bool big_endian
>
6839 Target_powerpc
<size
, big_endian
>::define_save_restore_funcs(
6841 Symbol_table
* symtab
)
6845 Output_data_save_res
<size
, big_endian
>* savres
6846 = new Output_data_save_res
<size
, big_endian
>(symtab
);
6847 this->savres_section_
= savres
;
6848 layout
->add_output_section_data(".text", elfcpp::SHT_PROGBITS
,
6849 elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
,
6850 savres
, ORDER_TEXT
, false);
6854 // Sort linker created .got section first (for the header), then input
6855 // sections belonging to files using small model code.
6857 template<bool big_endian
>
6858 class Sort_toc_sections
6862 operator()(const Output_section::Input_section
& is1
,
6863 const Output_section::Input_section
& is2
) const
6865 if (!is1
.is_input_section() && is2
.is_input_section())
6868 = (is1
.is_input_section()
6869 && (static_cast<const Powerpc_relobj
<64, big_endian
>*>(is1
.relobj())
6870 ->has_small_toc_reloc()));
6872 = (is2
.is_input_section()
6873 && (static_cast<const Powerpc_relobj
<64, big_endian
>*>(is2
.relobj())
6874 ->has_small_toc_reloc()));
6875 return small1
&& !small2
;
6879 // Finalize the sections.
6881 template<int size
, bool big_endian
>
6883 Target_powerpc
<size
, big_endian
>::do_finalize_sections(
6885 const Input_objects
*,
6886 Symbol_table
* symtab
)
6888 if (parameters
->doing_static_link())
6890 // At least some versions of glibc elf-init.o have a strong
6891 // reference to __rela_iplt marker syms. A weak ref would be
6893 if (this->iplt_
!= NULL
)
6895 Reloc_section
* rel
= this->iplt_
->rel_plt();
6896 symtab
->define_in_output_data("__rela_iplt_start", NULL
,
6897 Symbol_table::PREDEFINED
, rel
, 0, 0,
6898 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
6899 elfcpp::STV_HIDDEN
, 0, false, true);
6900 symtab
->define_in_output_data("__rela_iplt_end", NULL
,
6901 Symbol_table::PREDEFINED
, rel
, 0, 0,
6902 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
6903 elfcpp::STV_HIDDEN
, 0, true, true);
6907 symtab
->define_as_constant("__rela_iplt_start", NULL
,
6908 Symbol_table::PREDEFINED
, 0, 0,
6909 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
6910 elfcpp::STV_HIDDEN
, 0, true, false);
6911 symtab
->define_as_constant("__rela_iplt_end", NULL
,
6912 Symbol_table::PREDEFINED
, 0, 0,
6913 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
6914 elfcpp::STV_HIDDEN
, 0, true, false);
6920 typedef Global_symbol_visitor_opd
<big_endian
> Symbol_visitor
;
6921 symtab
->for_all_symbols
<64, Symbol_visitor
>(Symbol_visitor());
6923 if (!parameters
->options().relocatable())
6925 this->define_save_restore_funcs(layout
, symtab
);
6927 // Annoyingly, we need to make these sections now whether or
6928 // not we need them. If we delay until do_relax then we
6929 // need to mess with the relaxation machinery checkpointing.
6930 this->got_section(symtab
, layout
);
6931 this->make_brlt_section(layout
);
6933 if (parameters
->options().toc_sort())
6935 Output_section
* os
= this->got_
->output_section();
6936 if (os
!= NULL
&& os
->input_sections().size() > 1)
6937 std::stable_sort(os
->input_sections().begin(),
6938 os
->input_sections().end(),
6939 Sort_toc_sections
<big_endian
>());
6944 // Fill in some more dynamic tags.
6945 Output_data_dynamic
* odyn
= layout
->dynamic_data();
6948 const Reloc_section
* rel_plt
= (this->plt_
== NULL
6950 : this->plt_
->rel_plt());
6951 layout
->add_target_dynamic_tags(false, this->plt_
, rel_plt
,
6952 this->rela_dyn_
, true, size
== 32);
6956 if (this->got_
!= NULL
)
6958 this->got_
->finalize_data_size();
6959 odyn
->add_section_plus_offset(elfcpp::DT_PPC_GOT
,
6960 this->got_
, this->got_
->g_o_t());
6965 if (this->glink_
!= NULL
)
6967 this->glink_
->finalize_data_size();
6968 odyn
->add_section_plus_offset(elfcpp::DT_PPC64_GLINK
,
6970 (this->glink_
->pltresolve_size
6976 // Emit any relocs we saved in an attempt to avoid generating COPY
6978 if (this->copy_relocs_
.any_saved_relocs())
6979 this->copy_relocs_
.emit(this->rela_dyn_section(layout
));
6982 // Return TRUE iff INSN is one we expect on a _LO variety toc/got
6986 ok_lo_toc_insn(uint32_t insn
)
6988 return ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
6989 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
6990 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
6991 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
6992 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
6993 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
6994 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
6995 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
6996 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
6997 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
6998 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
6999 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
7000 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
7001 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
7002 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7004 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
7005 && ((insn
& 3) == 0 || (insn
& 3) == 3))
7006 || (insn
& (0x3f << 26)) == 12u << 26 /* addic */);
7009 // Return the value to use for a branch relocation.
7011 template<int size
, bool big_endian
>
7013 Target_powerpc
<size
, big_endian
>::symval_for_branch(
7014 const Symbol_table
* symtab
,
7015 const Sized_symbol
<size
>* gsym
,
7016 Powerpc_relobj
<size
, big_endian
>* object
,
7018 unsigned int *dest_shndx
)
7020 if (size
== 32 || this->abiversion() >= 2)
7024 // If the symbol is defined in an opd section, ie. is a function
7025 // descriptor, use the function descriptor code entry address
7026 Powerpc_relobj
<size
, big_endian
>* symobj
= object
;
7028 && gsym
->source() != Symbol::FROM_OBJECT
)
7031 symobj
= static_cast<Powerpc_relobj
<size
, big_endian
>*>(gsym
->object());
7032 unsigned int shndx
= symobj
->opd_shndx();
7035 Address opd_addr
= symobj
->get_output_section_offset(shndx
);
7036 if (opd_addr
== invalid_address
)
7038 opd_addr
+= symobj
->output_section_address(shndx
);
7039 if (*value
>= opd_addr
&& *value
< opd_addr
+ symobj
->section_size(shndx
))
7042 *dest_shndx
= symobj
->get_opd_ent(*value
- opd_addr
, &sec_off
);
7043 if (symtab
->is_section_folded(symobj
, *dest_shndx
))
7046 = symtab
->icf()->get_folded_section(symobj
, *dest_shndx
);
7047 symobj
= static_cast<Powerpc_relobj
<size
, big_endian
>*>(folded
.first
);
7048 *dest_shndx
= folded
.second
;
7050 Address sec_addr
= symobj
->get_output_section_offset(*dest_shndx
);
7051 if (sec_addr
== invalid_address
)
7054 sec_addr
+= symobj
->output_section(*dest_shndx
)->address();
7055 *value
= sec_addr
+ sec_off
;
7060 // Perform a relocation.
7062 template<int size
, bool big_endian
>
7064 Target_powerpc
<size
, big_endian
>::Relocate::relocate(
7065 const Relocate_info
<size
, big_endian
>* relinfo
,
7067 Target_powerpc
* target
,
7070 const unsigned char* preloc
,
7071 const Sized_symbol
<size
>* gsym
,
7072 const Symbol_value
<size
>* psymval
,
7073 unsigned char* view
,
7075 section_size_type view_size
)
7080 const elfcpp::Rela
<size
, big_endian
> rela(preloc
);
7081 unsigned int r_type
= elfcpp::elf_r_type
<size
>(rela
.get_r_info());
7082 switch (this->maybe_skip_tls_get_addr_call(r_type
, gsym
))
7084 case Track_tls::NOT_EXPECTED
:
7085 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
7086 _("__tls_get_addr call lacks marker reloc"));
7088 case Track_tls::EXPECTED
:
7089 // We have already complained.
7091 case Track_tls::SKIP
:
7093 case Track_tls::NORMAL
:
7097 typedef Powerpc_relocate_functions
<size
, big_endian
> Reloc
;
7098 typedef typename
elfcpp::Swap
<32, big_endian
>::Valtype Insn
;
7099 typedef typename Reloc_types
<elfcpp::SHT_RELA
,
7100 size
, big_endian
>::Reloc Reltype
;
7101 // Offset from start of insn to d-field reloc.
7102 const int d_offset
= big_endian
? 2 : 0;
7104 Powerpc_relobj
<size
, big_endian
>* const object
7105 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(relinfo
->object
);
7107 bool has_stub_value
= false;
7108 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
7110 ? gsym
->use_plt_offset(Scan::get_reference_flags(r_type
, target
))
7111 : object
->local_has_plt_offset(r_sym
))
7112 && (!psymval
->is_ifunc_symbol()
7113 || Scan::reloc_needs_plt_for_ifunc(target
, object
, r_type
, false)))
7117 && target
->abiversion() >= 2
7118 && !parameters
->options().output_is_position_independent()
7119 && !is_branch_reloc(r_type
))
7121 Address off
= target
->glink_section()->find_global_entry(gsym
);
7122 if (off
!= invalid_address
)
7124 value
= target
->glink_section()->global_entry_address() + off
;
7125 has_stub_value
= true;
7130 Stub_table
<size
, big_endian
>* stub_table
7131 = object
->stub_table(relinfo
->data_shndx
);
7132 if (stub_table
== NULL
)
7134 // This is a ref from a data section to an ifunc symbol.
7135 if (target
->stub_tables().size() != 0)
7136 stub_table
= target
->stub_tables()[0];
7138 if (stub_table
!= NULL
)
7142 off
= stub_table
->find_plt_call_entry(object
, gsym
, r_type
,
7143 rela
.get_r_addend());
7145 off
= stub_table
->find_plt_call_entry(object
, r_sym
, r_type
,
7146 rela
.get_r_addend());
7147 if (off
!= invalid_address
)
7149 value
= stub_table
->stub_address() + off
;
7150 has_stub_value
= true;
7154 // We don't care too much about bogus debug references to
7155 // non-local functions, but otherwise there had better be a plt
7156 // call stub or global entry stub as appropriate.
7157 gold_assert(has_stub_value
|| !(os
->flags() & elfcpp::SHF_ALLOC
));
7160 if (r_type
== elfcpp::R_POWERPC_GOT16
7161 || r_type
== elfcpp::R_POWERPC_GOT16_LO
7162 || r_type
== elfcpp::R_POWERPC_GOT16_HI
7163 || r_type
== elfcpp::R_POWERPC_GOT16_HA
7164 || r_type
== elfcpp::R_PPC64_GOT16_DS
7165 || r_type
== elfcpp::R_PPC64_GOT16_LO_DS
)
7169 gold_assert(gsym
->has_got_offset(GOT_TYPE_STANDARD
));
7170 value
= gsym
->got_offset(GOT_TYPE_STANDARD
);
7174 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
7175 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_STANDARD
));
7176 value
= object
->local_got_offset(r_sym
, GOT_TYPE_STANDARD
);
7178 value
-= target
->got_section()->got_base_offset(object
);
7180 else if (r_type
== elfcpp::R_PPC64_TOC
)
7182 value
= (target
->got_section()->output_section()->address()
7183 + object
->toc_base_offset());
7185 else if (gsym
!= NULL
7186 && (r_type
== elfcpp::R_POWERPC_REL24
7187 || r_type
== elfcpp::R_PPC_PLTREL24
)
7192 typedef typename
elfcpp::Swap
<32, big_endian
>::Valtype Valtype
;
7193 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
7194 bool can_plt_call
= false;
7195 if (rela
.get_r_offset() + 8 <= view_size
)
7197 Valtype insn
= elfcpp::Swap
<32, big_endian
>::readval(wv
);
7198 Valtype insn2
= elfcpp::Swap
<32, big_endian
>::readval(wv
+ 1);
7201 || insn2
== cror_15_15_15
|| insn2
== cror_31_31_31
))
7203 elfcpp::Swap
<32, big_endian
>::
7204 writeval(wv
+ 1, ld_2_1
+ target
->stk_toc());
7205 can_plt_call
= true;
7210 // If we don't have a branch and link followed by a nop,
7211 // we can't go via the plt because there is no place to
7212 // put a toc restoring instruction.
7213 // Unless we know we won't be returning.
7214 if (strcmp(gsym
->name(), "__libc_start_main") == 0)
7215 can_plt_call
= true;
7219 // g++ as of 20130507 emits self-calls without a
7220 // following nop. This is arguably wrong since we have
7221 // conflicting information. On the one hand a global
7222 // symbol and on the other a local call sequence, but
7223 // don't error for this special case.
7224 // It isn't possible to cheaply verify we have exactly
7225 // such a call. Allow all calls to the same section.
7227 Address code
= value
;
7228 if (gsym
->source() == Symbol::FROM_OBJECT
7229 && gsym
->object() == object
)
7231 unsigned int dest_shndx
= 0;
7232 if (target
->abiversion() < 2)
7234 Address addend
= rela
.get_r_addend();
7235 code
= psymval
->value(object
, addend
);
7236 target
->symval_for_branch(relinfo
->symtab
, gsym
, object
,
7237 &code
, &dest_shndx
);
7240 if (dest_shndx
== 0)
7241 dest_shndx
= gsym
->shndx(&is_ordinary
);
7242 ok
= dest_shndx
== relinfo
->data_shndx
;
7246 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
7247 _("call lacks nop, can't restore toc; "
7248 "recompile with -fPIC"));
7254 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
7255 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
7256 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HI
7257 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HA
)
7259 // First instruction of a global dynamic sequence, arg setup insn.
7260 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
7261 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
7262 enum Got_type got_type
= GOT_TYPE_STANDARD
;
7263 if (tls_type
== tls::TLSOPT_NONE
)
7264 got_type
= GOT_TYPE_TLSGD
;
7265 else if (tls_type
== tls::TLSOPT_TO_IE
)
7266 got_type
= GOT_TYPE_TPREL
;
7267 if (got_type
!= GOT_TYPE_STANDARD
)
7271 gold_assert(gsym
->has_got_offset(got_type
));
7272 value
= gsym
->got_offset(got_type
);
7276 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
7277 gold_assert(object
->local_has_got_offset(r_sym
, got_type
));
7278 value
= object
->local_got_offset(r_sym
, got_type
);
7280 value
-= target
->got_section()->got_base_offset(object
);
7282 if (tls_type
== tls::TLSOPT_TO_IE
)
7284 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
7285 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
7287 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
7288 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7289 insn
&= (1 << 26) - (1 << 16); // extract rt,ra from addi
7291 insn
|= 32 << 26; // lwz
7293 insn
|= 58 << 26; // ld
7294 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7296 r_type
+= (elfcpp::R_POWERPC_GOT_TPREL16
7297 - elfcpp::R_POWERPC_GOT_TLSGD16
);
7299 else if (tls_type
== tls::TLSOPT_TO_LE
)
7301 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
7302 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
7304 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
7305 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7306 insn
&= (1 << 26) - (1 << 21); // extract rt
7311 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7312 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
7313 value
= psymval
->value(object
, rela
.get_r_addend());
7317 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
7319 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7320 r_type
= elfcpp::R_POWERPC_NONE
;
7324 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
7325 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
7326 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HI
7327 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HA
)
7329 // First instruction of a local dynamic sequence, arg setup insn.
7330 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
7331 if (tls_type
== tls::TLSOPT_NONE
)
7333 value
= target
->tlsld_got_offset();
7334 value
-= target
->got_section()->got_base_offset(object
);
7338 gold_assert(tls_type
== tls::TLSOPT_TO_LE
);
7339 if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
7340 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
)
7342 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
7343 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7344 insn
&= (1 << 26) - (1 << 21); // extract rt
7349 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7350 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
7355 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
7357 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7358 r_type
= elfcpp::R_POWERPC_NONE
;
7362 else if (r_type
== elfcpp::R_POWERPC_GOT_DTPREL16
7363 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_LO
7364 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_HI
7365 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_HA
)
7367 // Accesses relative to a local dynamic sequence address,
7368 // no optimisation here.
7371 gold_assert(gsym
->has_got_offset(GOT_TYPE_DTPREL
));
7372 value
= gsym
->got_offset(GOT_TYPE_DTPREL
);
7376 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
7377 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_DTPREL
));
7378 value
= object
->local_got_offset(r_sym
, GOT_TYPE_DTPREL
);
7380 value
-= target
->got_section()->got_base_offset(object
);
7382 else if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
7383 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
7384 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HI
7385 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HA
)
7387 // First instruction of initial exec sequence.
7388 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
7389 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
7390 if (tls_type
== tls::TLSOPT_NONE
)
7394 gold_assert(gsym
->has_got_offset(GOT_TYPE_TPREL
));
7395 value
= gsym
->got_offset(GOT_TYPE_TPREL
);
7399 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
7400 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_TPREL
));
7401 value
= object
->local_got_offset(r_sym
, GOT_TYPE_TPREL
);
7403 value
-= target
->got_section()->got_base_offset(object
);
7407 gold_assert(tls_type
== tls::TLSOPT_TO_LE
);
7408 if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
7409 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
)
7411 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
7412 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7413 insn
&= (1 << 26) - (1 << 21); // extract rt from ld
7418 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7419 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
7420 value
= psymval
->value(object
, rela
.get_r_addend());
7424 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
7426 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7427 r_type
= elfcpp::R_POWERPC_NONE
;
7431 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
7432 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
7434 // Second instruction of a global dynamic sequence,
7435 // the __tls_get_addr call
7436 this->expect_tls_get_addr_call(relinfo
, relnum
, rela
.get_r_offset());
7437 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
7438 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
7439 if (tls_type
!= tls::TLSOPT_NONE
)
7441 if (tls_type
== tls::TLSOPT_TO_IE
)
7443 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
7444 Insn insn
= add_3_3_13
;
7447 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7448 r_type
= elfcpp::R_POWERPC_NONE
;
7452 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
7453 Insn insn
= addi_3_3
;
7454 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7455 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
7457 value
= psymval
->value(object
, rela
.get_r_addend());
7459 this->skip_next_tls_get_addr_call();
7462 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
7463 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
7465 // Second instruction of a local dynamic sequence,
7466 // the __tls_get_addr call
7467 this->expect_tls_get_addr_call(relinfo
, relnum
, rela
.get_r_offset());
7468 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
7469 if (tls_type
== tls::TLSOPT_TO_LE
)
7471 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
7472 Insn insn
= addi_3_3
;
7473 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7474 this->skip_next_tls_get_addr_call();
7475 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
7480 else if (r_type
== elfcpp::R_POWERPC_TLS
)
7482 // Second instruction of an initial exec sequence
7483 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
7484 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
7485 if (tls_type
== tls::TLSOPT_TO_LE
)
7487 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
7488 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7489 unsigned int reg
= size
== 32 ? 2 : 13;
7490 insn
= at_tls_transform(insn
, reg
);
7491 gold_assert(insn
!= 0);
7492 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7493 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
7495 value
= psymval
->value(object
, rela
.get_r_addend());
7498 else if (!has_stub_value
)
7501 if (!(size
== 32 && r_type
== elfcpp::R_PPC_PLTREL24
))
7502 addend
= rela
.get_r_addend();
7503 value
= psymval
->value(object
, addend
);
7504 if (size
== 64 && is_branch_reloc(r_type
))
7506 if (target
->abiversion() >= 2)
7509 value
+= object
->ppc64_local_entry_offset(gsym
);
7511 value
+= object
->ppc64_local_entry_offset(r_sym
);
7515 unsigned int dest_shndx
;
7516 target
->symval_for_branch(relinfo
->symtab
, gsym
, object
,
7517 &value
, &dest_shndx
);
7520 Address max_branch_offset
= max_branch_delta(r_type
);
7521 if (max_branch_offset
!= 0
7522 && value
- address
+ max_branch_offset
>= 2 * max_branch_offset
)
7524 Stub_table
<size
, big_endian
>* stub_table
7525 = object
->stub_table(relinfo
->data_shndx
);
7526 if (stub_table
!= NULL
)
7528 Address off
= stub_table
->find_long_branch_entry(object
, value
);
7529 if (off
!= invalid_address
)
7531 value
= (stub_table
->stub_address() + stub_table
->plt_size()
7533 has_stub_value
= true;
7541 case elfcpp::R_PPC64_REL64
:
7542 case elfcpp::R_POWERPC_REL32
:
7543 case elfcpp::R_POWERPC_REL24
:
7544 case elfcpp::R_PPC_PLTREL24
:
7545 case elfcpp::R_PPC_LOCAL24PC
:
7546 case elfcpp::R_POWERPC_REL16
:
7547 case elfcpp::R_POWERPC_REL16_LO
:
7548 case elfcpp::R_POWERPC_REL16_HI
:
7549 case elfcpp::R_POWERPC_REL16_HA
:
7550 case elfcpp::R_POWERPC_REL16DX_HA
:
7551 case elfcpp::R_POWERPC_REL14
:
7552 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
7553 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
7557 case elfcpp::R_PPC64_TOC16
:
7558 case elfcpp::R_PPC64_TOC16_LO
:
7559 case elfcpp::R_PPC64_TOC16_HI
:
7560 case elfcpp::R_PPC64_TOC16_HA
:
7561 case elfcpp::R_PPC64_TOC16_DS
:
7562 case elfcpp::R_PPC64_TOC16_LO_DS
:
7563 // Subtract the TOC base address.
7564 value
-= (target
->got_section()->output_section()->address()
7565 + object
->toc_base_offset());
7568 case elfcpp::R_POWERPC_SECTOFF
:
7569 case elfcpp::R_POWERPC_SECTOFF_LO
:
7570 case elfcpp::R_POWERPC_SECTOFF_HI
:
7571 case elfcpp::R_POWERPC_SECTOFF_HA
:
7572 case elfcpp::R_PPC64_SECTOFF_DS
:
7573 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
7575 value
-= os
->address();
7578 case elfcpp::R_PPC64_TPREL16_DS
:
7579 case elfcpp::R_PPC64_TPREL16_LO_DS
:
7580 case elfcpp::R_PPC64_TPREL16_HIGH
:
7581 case elfcpp::R_PPC64_TPREL16_HIGHA
:
7583 // R_PPC_TLSGD, R_PPC_TLSLD, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HI
7586 case elfcpp::R_POWERPC_TPREL16
:
7587 case elfcpp::R_POWERPC_TPREL16_LO
:
7588 case elfcpp::R_POWERPC_TPREL16_HI
:
7589 case elfcpp::R_POWERPC_TPREL16_HA
:
7590 case elfcpp::R_POWERPC_TPREL
:
7591 case elfcpp::R_PPC64_TPREL16_HIGHER
:
7592 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
7593 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
7594 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
7595 // tls symbol values are relative to tls_segment()->vaddr()
7599 case elfcpp::R_PPC64_DTPREL16_DS
:
7600 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
7601 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
7602 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
7603 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
7604 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
7606 // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO
7607 // R_PPC_EMB_NADDR16_HI, R_PPC_EMB_NADDR16_HA, R_PPC_EMB_SDAI16
7610 case elfcpp::R_POWERPC_DTPREL16
:
7611 case elfcpp::R_POWERPC_DTPREL16_LO
:
7612 case elfcpp::R_POWERPC_DTPREL16_HI
:
7613 case elfcpp::R_POWERPC_DTPREL16_HA
:
7614 case elfcpp::R_POWERPC_DTPREL
:
7615 case elfcpp::R_PPC64_DTPREL16_HIGH
:
7616 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
7617 // tls symbol values are relative to tls_segment()->vaddr()
7618 value
-= dtp_offset
;
7621 case elfcpp::R_PPC64_ADDR64_LOCAL
:
7623 value
+= object
->ppc64_local_entry_offset(gsym
);
7625 value
+= object
->ppc64_local_entry_offset(r_sym
);
7632 Insn branch_bit
= 0;
7635 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
7636 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
7637 branch_bit
= 1 << 21;
7639 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
7640 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
7642 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
7643 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7646 if (this->is_isa_v2
)
7648 // Set 'a' bit. This is 0b00010 in BO field for branch
7649 // on CR(BI) insns (BO == 001at or 011at), and 0b01000
7650 // for branch on CTR insns (BO == 1a00t or 1a01t).
7651 if ((insn
& (0x14 << 21)) == (0x04 << 21))
7653 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
7660 // Invert 'y' bit if not the default.
7661 if (static_cast<Signed_address
>(value
) < 0)
7664 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7674 // Multi-instruction sequences that access the TOC can be
7675 // optimized, eg. addis ra,r2,0; addi rb,ra,x;
7676 // to nop; addi rb,r2,x;
7682 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
7683 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
7684 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
7685 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
7686 case elfcpp::R_POWERPC_GOT16_HA
:
7687 case elfcpp::R_PPC64_TOC16_HA
:
7688 if (parameters
->options().toc_optimize())
7690 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
7691 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7692 if ((insn
& ((0x3f << 26) | 0x1f << 16))
7693 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
7694 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
7695 _("toc optimization is not supported "
7696 "for %#08x instruction"), insn
);
7697 else if (value
+ 0x8000 < 0x10000)
7699 elfcpp::Swap
<32, big_endian
>::writeval(iview
, nop
);
7705 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
7706 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
7707 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
7708 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
7709 case elfcpp::R_POWERPC_GOT16_LO
:
7710 case elfcpp::R_PPC64_GOT16_LO_DS
:
7711 case elfcpp::R_PPC64_TOC16_LO
:
7712 case elfcpp::R_PPC64_TOC16_LO_DS
:
7713 if (parameters
->options().toc_optimize())
7715 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
7716 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7717 if (!ok_lo_toc_insn(insn
))
7718 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
7719 _("toc optimization is not supported "
7720 "for %#08x instruction"), insn
);
7721 else if (value
+ 0x8000 < 0x10000)
7723 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
7725 // Transform addic to addi when we change reg.
7726 insn
&= ~((0x3f << 26) | (0x1f << 16));
7727 insn
|= (14u << 26) | (2 << 16);
7731 insn
&= ~(0x1f << 16);
7734 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7739 case elfcpp::R_PPC64_ENTRY
:
7740 value
= (target
->got_section()->output_section()->address()
7741 + object
->toc_base_offset());
7742 if (value
+ 0x80008000 <= 0xffffffff
7743 && !parameters
->options().output_is_position_independent())
7745 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
7746 Insn insn1
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7747 Insn insn2
= elfcpp::Swap
<32, big_endian
>::readval(iview
+ 1);
7749 if ((insn1
& ~0xfffc) == ld_2_12
7750 && insn2
== add_2_2_12
)
7752 insn1
= lis_2
+ ha(value
);
7753 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn1
);
7754 insn2
= addi_2_2
+ l(value
);
7755 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1, insn2
);
7762 if (value
+ 0x80008000 <= 0xffffffff)
7764 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
7765 Insn insn1
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7766 Insn insn2
= elfcpp::Swap
<32, big_endian
>::readval(iview
+ 1);
7768 if ((insn1
& ~0xfffc) == ld_2_12
7769 && insn2
== add_2_2_12
)
7771 insn1
= addis_2_12
+ ha(value
);
7772 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn1
);
7773 insn2
= addi_2_2
+ l(value
);
7774 elfcpp::Swap
<32, big_endian
>::writeval(iview
+ 1, insn2
);
7781 case elfcpp::R_POWERPC_REL16_LO
:
7782 // If we are generating a non-PIC executable, edit
7783 // 0: addis 2,12,.TOC.-0b@ha
7784 // addi 2,2,.TOC.-0b@l
7785 // used by ELFv2 global entry points to set up r2, to
7788 // if .TOC. is in range. */
7789 if (value
+ address
- 4 + 0x80008000 <= 0xffffffff
7792 && target
->abiversion() >= 2
7793 && !parameters
->options().output_is_position_independent()
7794 && rela
.get_r_addend() == d_offset
+ 4
7796 && strcmp(gsym
->name(), ".TOC.") == 0)
7798 const int reloc_size
7799 = Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
7800 Reltype
prev_rela(preloc
- reloc_size
);
7801 if ((prev_rela
.get_r_info()
7802 == elfcpp::elf_r_info
<size
>(r_sym
,
7803 elfcpp::R_POWERPC_REL16_HA
))
7804 && prev_rela
.get_r_offset() + 4 == rela
.get_r_offset()
7805 && prev_rela
.get_r_addend() + 4 == rela
.get_r_addend())
7807 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
7808 Insn insn1
= elfcpp::Swap
<32, big_endian
>::readval(iview
- 1);
7809 Insn insn2
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7811 if ((insn1
& 0xffff0000) == addis_2_12
7812 && (insn2
& 0xffff0000) == addi_2_2
)
7814 insn1
= lis_2
+ ha(value
+ address
- 4);
7815 elfcpp::Swap
<32, big_endian
>::writeval(iview
- 1, insn1
);
7816 insn2
= addi_2_2
+ l(value
+ address
- 4);
7817 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn2
);
7820 relinfo
->rr
->set_strategy(relnum
- 1,
7821 Relocatable_relocs::RELOC_SPECIAL
);
7822 relinfo
->rr
->set_strategy(relnum
,
7823 Relocatable_relocs::RELOC_SPECIAL
);
7833 typename
Reloc::Overflow_check overflow
= Reloc::CHECK_NONE
;
7834 elfcpp::Shdr
<size
, big_endian
> shdr(relinfo
->data_shdr
);
7837 case elfcpp::R_POWERPC_ADDR32
:
7838 case elfcpp::R_POWERPC_UADDR32
:
7840 overflow
= Reloc::CHECK_BITFIELD
;
7843 case elfcpp::R_POWERPC_REL32
:
7844 case elfcpp::R_POWERPC_REL16DX_HA
:
7846 overflow
= Reloc::CHECK_SIGNED
;
7849 case elfcpp::R_POWERPC_UADDR16
:
7850 overflow
= Reloc::CHECK_BITFIELD
;
7853 case elfcpp::R_POWERPC_ADDR16
:
7854 // We really should have three separate relocations,
7855 // one for 16-bit data, one for insns with 16-bit signed fields,
7856 // and one for insns with 16-bit unsigned fields.
7857 overflow
= Reloc::CHECK_BITFIELD
;
7858 if ((shdr
.get_sh_flags() & elfcpp::SHF_EXECINSTR
) != 0)
7859 overflow
= Reloc::CHECK_LOW_INSN
;
7862 case elfcpp::R_POWERPC_ADDR16_HI
:
7863 case elfcpp::R_POWERPC_ADDR16_HA
:
7864 case elfcpp::R_POWERPC_GOT16_HI
:
7865 case elfcpp::R_POWERPC_GOT16_HA
:
7866 case elfcpp::R_POWERPC_PLT16_HI
:
7867 case elfcpp::R_POWERPC_PLT16_HA
:
7868 case elfcpp::R_POWERPC_SECTOFF_HI
:
7869 case elfcpp::R_POWERPC_SECTOFF_HA
:
7870 case elfcpp::R_PPC64_TOC16_HI
:
7871 case elfcpp::R_PPC64_TOC16_HA
:
7872 case elfcpp::R_PPC64_PLTGOT16_HI
:
7873 case elfcpp::R_PPC64_PLTGOT16_HA
:
7874 case elfcpp::R_POWERPC_TPREL16_HI
:
7875 case elfcpp::R_POWERPC_TPREL16_HA
:
7876 case elfcpp::R_POWERPC_DTPREL16_HI
:
7877 case elfcpp::R_POWERPC_DTPREL16_HA
:
7878 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
7879 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
7880 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
7881 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
7882 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
7883 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
7884 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
7885 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
7886 case elfcpp::R_POWERPC_REL16_HI
:
7887 case elfcpp::R_POWERPC_REL16_HA
:
7889 overflow
= Reloc::CHECK_HIGH_INSN
;
7892 case elfcpp::R_POWERPC_REL16
:
7893 case elfcpp::R_PPC64_TOC16
:
7894 case elfcpp::R_POWERPC_GOT16
:
7895 case elfcpp::R_POWERPC_SECTOFF
:
7896 case elfcpp::R_POWERPC_TPREL16
:
7897 case elfcpp::R_POWERPC_DTPREL16
:
7898 case elfcpp::R_POWERPC_GOT_TLSGD16
:
7899 case elfcpp::R_POWERPC_GOT_TLSLD16
:
7900 case elfcpp::R_POWERPC_GOT_TPREL16
:
7901 case elfcpp::R_POWERPC_GOT_DTPREL16
:
7902 overflow
= Reloc::CHECK_LOW_INSN
;
7905 case elfcpp::R_POWERPC_ADDR24
:
7906 case elfcpp::R_POWERPC_ADDR14
:
7907 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
7908 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
7909 case elfcpp::R_PPC64_ADDR16_DS
:
7910 case elfcpp::R_POWERPC_REL24
:
7911 case elfcpp::R_PPC_PLTREL24
:
7912 case elfcpp::R_PPC_LOCAL24PC
:
7913 case elfcpp::R_PPC64_TPREL16_DS
:
7914 case elfcpp::R_PPC64_DTPREL16_DS
:
7915 case elfcpp::R_PPC64_TOC16_DS
:
7916 case elfcpp::R_PPC64_GOT16_DS
:
7917 case elfcpp::R_PPC64_SECTOFF_DS
:
7918 case elfcpp::R_POWERPC_REL14
:
7919 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
7920 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
7921 overflow
= Reloc::CHECK_SIGNED
;
7925 Insn
* iview
= reinterpret_cast<Insn
*>(view
- d_offset
);
7928 if (overflow
== Reloc::CHECK_LOW_INSN
7929 || overflow
== Reloc::CHECK_HIGH_INSN
)
7931 insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7933 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
7934 overflow
= Reloc::CHECK_BITFIELD
;
7935 else if (overflow
== Reloc::CHECK_LOW_INSN
7936 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
7937 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
7938 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
7939 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
7940 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
7941 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
7942 overflow
= Reloc::CHECK_UNSIGNED
;
7944 overflow
= Reloc::CHECK_SIGNED
;
7947 bool maybe_dq_reloc
= false;
7948 typename Powerpc_relocate_functions
<size
, big_endian
>::Status status
7949 = Powerpc_relocate_functions
<size
, big_endian
>::STATUS_OK
;
7952 case elfcpp::R_POWERPC_NONE
:
7953 case elfcpp::R_POWERPC_TLS
:
7954 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
7955 case elfcpp::R_POWERPC_GNU_VTENTRY
:
7958 case elfcpp::R_PPC64_ADDR64
:
7959 case elfcpp::R_PPC64_REL64
:
7960 case elfcpp::R_PPC64_TOC
:
7961 case elfcpp::R_PPC64_ADDR64_LOCAL
:
7962 Reloc::addr64(view
, value
);
7965 case elfcpp::R_POWERPC_TPREL
:
7966 case elfcpp::R_POWERPC_DTPREL
:
7968 Reloc::addr64(view
, value
);
7970 status
= Reloc::addr32(view
, value
, overflow
);
7973 case elfcpp::R_PPC64_UADDR64
:
7974 Reloc::addr64_u(view
, value
);
7977 case elfcpp::R_POWERPC_ADDR32
:
7978 status
= Reloc::addr32(view
, value
, overflow
);
7981 case elfcpp::R_POWERPC_REL32
:
7982 case elfcpp::R_POWERPC_UADDR32
:
7983 status
= Reloc::addr32_u(view
, value
, overflow
);
7986 case elfcpp::R_POWERPC_ADDR24
:
7987 case elfcpp::R_POWERPC_REL24
:
7988 case elfcpp::R_PPC_PLTREL24
:
7989 case elfcpp::R_PPC_LOCAL24PC
:
7990 status
= Reloc::addr24(view
, value
, overflow
);
7993 case elfcpp::R_POWERPC_GOT_DTPREL16
:
7994 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
7995 case elfcpp::R_POWERPC_GOT_TPREL16
:
7996 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
7999 // On ppc64 these are all ds form
8000 maybe_dq_reloc
= true;
8004 case elfcpp::R_POWERPC_ADDR16
:
8005 case elfcpp::R_POWERPC_REL16
:
8006 case elfcpp::R_PPC64_TOC16
:
8007 case elfcpp::R_POWERPC_GOT16
:
8008 case elfcpp::R_POWERPC_SECTOFF
:
8009 case elfcpp::R_POWERPC_TPREL16
:
8010 case elfcpp::R_POWERPC_DTPREL16
:
8011 case elfcpp::R_POWERPC_GOT_TLSGD16
:
8012 case elfcpp::R_POWERPC_GOT_TLSLD16
:
8013 case elfcpp::R_POWERPC_ADDR16_LO
:
8014 case elfcpp::R_POWERPC_REL16_LO
:
8015 case elfcpp::R_PPC64_TOC16_LO
:
8016 case elfcpp::R_POWERPC_GOT16_LO
:
8017 case elfcpp::R_POWERPC_SECTOFF_LO
:
8018 case elfcpp::R_POWERPC_TPREL16_LO
:
8019 case elfcpp::R_POWERPC_DTPREL16_LO
:
8020 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
8021 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
8023 status
= Reloc::addr16(view
, value
, overflow
);
8025 maybe_dq_reloc
= true;
8028 case elfcpp::R_POWERPC_UADDR16
:
8029 status
= Reloc::addr16_u(view
, value
, overflow
);
8032 case elfcpp::R_PPC64_ADDR16_HIGH
:
8033 case elfcpp::R_PPC64_TPREL16_HIGH
:
8034 case elfcpp::R_PPC64_DTPREL16_HIGH
:
8036 // R_PPC_EMB_MRKREF, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HA
8039 case elfcpp::R_POWERPC_ADDR16_HI
:
8040 case elfcpp::R_POWERPC_REL16_HI
:
8041 case elfcpp::R_PPC64_TOC16_HI
:
8042 case elfcpp::R_POWERPC_GOT16_HI
:
8043 case elfcpp::R_POWERPC_SECTOFF_HI
:
8044 case elfcpp::R_POWERPC_TPREL16_HI
:
8045 case elfcpp::R_POWERPC_DTPREL16_HI
:
8046 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
8047 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
8048 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
8049 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
8050 Reloc::addr16_hi(view
, value
);
8053 case elfcpp::R_PPC64_ADDR16_HIGHA
:
8054 case elfcpp::R_PPC64_TPREL16_HIGHA
:
8055 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
8057 // R_PPC_EMB_RELSEC16, R_PPC_EMB_RELST_HI, R_PPC_EMB_BIT_FLD
8060 case elfcpp::R_POWERPC_ADDR16_HA
:
8061 case elfcpp::R_POWERPC_REL16_HA
:
8062 case elfcpp::R_PPC64_TOC16_HA
:
8063 case elfcpp::R_POWERPC_GOT16_HA
:
8064 case elfcpp::R_POWERPC_SECTOFF_HA
:
8065 case elfcpp::R_POWERPC_TPREL16_HA
:
8066 case elfcpp::R_POWERPC_DTPREL16_HA
:
8067 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
8068 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
8069 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
8070 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
8071 Reloc::addr16_ha(view
, value
);
8074 case elfcpp::R_POWERPC_REL16DX_HA
:
8075 status
= Reloc::addr16dx_ha(view
, value
, overflow
);
8078 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
8080 // R_PPC_EMB_NADDR16_LO
8083 case elfcpp::R_PPC64_ADDR16_HIGHER
:
8084 case elfcpp::R_PPC64_TPREL16_HIGHER
:
8085 Reloc::addr16_hi2(view
, value
);
8088 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
8090 // R_PPC_EMB_NADDR16_HI
8093 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
8094 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
8095 Reloc::addr16_ha2(view
, value
);
8098 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
8100 // R_PPC_EMB_NADDR16_HA
8103 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
8104 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
8105 Reloc::addr16_hi3(view
, value
);
8108 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
8113 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
8114 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
8115 Reloc::addr16_ha3(view
, value
);
8118 case elfcpp::R_PPC64_DTPREL16_DS
:
8119 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
8121 // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16
8124 case elfcpp::R_PPC64_TPREL16_DS
:
8125 case elfcpp::R_PPC64_TPREL16_LO_DS
:
8127 // R_PPC_TLSGD, R_PPC_TLSLD
8130 case elfcpp::R_PPC64_ADDR16_DS
:
8131 case elfcpp::R_PPC64_ADDR16_LO_DS
:
8132 case elfcpp::R_PPC64_TOC16_DS
:
8133 case elfcpp::R_PPC64_TOC16_LO_DS
:
8134 case elfcpp::R_PPC64_GOT16_DS
:
8135 case elfcpp::R_PPC64_GOT16_LO_DS
:
8136 case elfcpp::R_PPC64_SECTOFF_DS
:
8137 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
8138 maybe_dq_reloc
= true;
8141 case elfcpp::R_POWERPC_ADDR14
:
8142 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
8143 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
8144 case elfcpp::R_POWERPC_REL14
:
8145 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
8146 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
8147 status
= Reloc::addr14(view
, value
, overflow
);
8150 case elfcpp::R_POWERPC_COPY
:
8151 case elfcpp::R_POWERPC_GLOB_DAT
:
8152 case elfcpp::R_POWERPC_JMP_SLOT
:
8153 case elfcpp::R_POWERPC_RELATIVE
:
8154 case elfcpp::R_POWERPC_DTPMOD
:
8155 case elfcpp::R_PPC64_JMP_IREL
:
8156 case elfcpp::R_POWERPC_IRELATIVE
:
8157 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
8158 _("unexpected reloc %u in object file"),
8162 case elfcpp::R_PPC_EMB_SDA21
:
8167 // R_PPC64_TOCSAVE. For the time being this can be ignored.
8171 case elfcpp::R_PPC_EMB_SDA2I16
:
8172 case elfcpp::R_PPC_EMB_SDA2REL
:
8175 // R_PPC64_TLSGD, R_PPC64_TLSLD
8178 case elfcpp::R_POWERPC_PLT32
:
8179 case elfcpp::R_POWERPC_PLTREL32
:
8180 case elfcpp::R_POWERPC_PLT16_LO
:
8181 case elfcpp::R_POWERPC_PLT16_HI
:
8182 case elfcpp::R_POWERPC_PLT16_HA
:
8183 case elfcpp::R_PPC_SDAREL16
:
8184 case elfcpp::R_POWERPC_ADDR30
:
8185 case elfcpp::R_PPC64_PLT64
:
8186 case elfcpp::R_PPC64_PLTREL64
:
8187 case elfcpp::R_PPC64_PLTGOT16
:
8188 case elfcpp::R_PPC64_PLTGOT16_LO
:
8189 case elfcpp::R_PPC64_PLTGOT16_HI
:
8190 case elfcpp::R_PPC64_PLTGOT16_HA
:
8191 case elfcpp::R_PPC64_PLT16_LO_DS
:
8192 case elfcpp::R_PPC64_PLTGOT16_DS
:
8193 case elfcpp::R_PPC64_PLTGOT16_LO_DS
:
8194 case elfcpp::R_PPC_EMB_RELSDA
:
8195 case elfcpp::R_PPC_TOC16
:
8198 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
8199 _("unsupported reloc %u"),
8207 insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
8209 if ((insn
& (0x3f << 26)) == 56u << 26 /* lq */
8210 || ((insn
& (0x3f << 26)) == (61u << 26) /* lxv, stxv */
8211 && (insn
& 3) == 1))
8212 status
= Reloc::addr16_dq(view
, value
, overflow
);
8214 || (insn
& (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
8215 || (insn
& (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
8216 || (insn
& (0x3f << 26)) == 57u << 26 /* lfdp */
8217 || (insn
& (0x3f << 26)) == 61u << 26 /* stfdp */)
8218 status
= Reloc::addr16_ds(view
, value
, overflow
);
8220 status
= Reloc::addr16(view
, value
, overflow
);
8223 if (status
!= Powerpc_relocate_functions
<size
, big_endian
>::STATUS_OK
8226 && gsym
->is_undefined()
8227 && is_branch_reloc(r_type
))))
8229 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
8230 _("relocation overflow"));
8232 gold_info(_("try relinking with a smaller --stub-group-size"));
8238 // Relocate section data.
8240 template<int size
, bool big_endian
>
8242 Target_powerpc
<size
, big_endian
>::relocate_section(
8243 const Relocate_info
<size
, big_endian
>* relinfo
,
8244 unsigned int sh_type
,
8245 const unsigned char* prelocs
,
8247 Output_section
* output_section
,
8248 bool needs_special_offset_handling
,
8249 unsigned char* view
,
8251 section_size_type view_size
,
8252 const Reloc_symbol_changes
* reloc_symbol_changes
)
8254 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
8255 typedef typename Target_powerpc
<size
, big_endian
>::Relocate Powerpc_relocate
;
8256 typedef typename Target_powerpc
<size
, big_endian
>::Relocate_comdat_behavior
8257 Powerpc_comdat_behavior
;
8258 typedef gold::Default_classify_reloc
<elfcpp::SHT_RELA
, size
, big_endian
>
8261 gold_assert(sh_type
== elfcpp::SHT_RELA
);
8263 gold::relocate_section
<size
, big_endian
, Powerpc
, Powerpc_relocate
,
8264 Powerpc_comdat_behavior
, Classify_reloc
>(
8270 needs_special_offset_handling
,
8274 reloc_symbol_changes
);
8277 template<int size
, bool big_endian
>
8278 class Powerpc_scan_relocatable_reloc
8281 typedef typename Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::Reloc
8283 static const int reloc_size
=
8284 Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
8285 static const int sh_type
= elfcpp::SHT_RELA
;
8287 // Return the symbol referred to by the relocation.
8288 static inline unsigned int
8289 get_r_sym(const Reltype
* reloc
)
8290 { return elfcpp::elf_r_sym
<size
>(reloc
->get_r_info()); }
8292 // Return the type of the relocation.
8293 static inline unsigned int
8294 get_r_type(const Reltype
* reloc
)
8295 { return elfcpp::elf_r_type
<size
>(reloc
->get_r_info()); }
8297 // Return the strategy to use for a local symbol which is not a
8298 // section symbol, given the relocation type.
8299 inline Relocatable_relocs::Reloc_strategy
8300 local_non_section_strategy(unsigned int r_type
, Relobj
*, unsigned int r_sym
)
8302 if (r_type
== 0 && r_sym
== 0)
8303 return Relocatable_relocs::RELOC_DISCARD
;
8304 return Relocatable_relocs::RELOC_COPY
;
8307 // Return the strategy to use for a local symbol which is a section
8308 // symbol, given the relocation type.
8309 inline Relocatable_relocs::Reloc_strategy
8310 local_section_strategy(unsigned int, Relobj
*)
8312 return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
;
8315 // Return the strategy to use for a global symbol, given the
8316 // relocation type, the object, and the symbol index.
8317 inline Relocatable_relocs::Reloc_strategy
8318 global_strategy(unsigned int r_type
, Relobj
*, unsigned int)
8320 if (r_type
== elfcpp::R_PPC_PLTREL24
)
8321 return Relocatable_relocs::RELOC_SPECIAL
;
8322 return Relocatable_relocs::RELOC_COPY
;
8326 // Scan the relocs during a relocatable link.
8328 template<int size
, bool big_endian
>
8330 Target_powerpc
<size
, big_endian
>::scan_relocatable_relocs(
8331 Symbol_table
* symtab
,
8333 Sized_relobj_file
<size
, big_endian
>* object
,
8334 unsigned int data_shndx
,
8335 unsigned int sh_type
,
8336 const unsigned char* prelocs
,
8338 Output_section
* output_section
,
8339 bool needs_special_offset_handling
,
8340 size_t local_symbol_count
,
8341 const unsigned char* plocal_symbols
,
8342 Relocatable_relocs
* rr
)
8344 typedef Powerpc_scan_relocatable_reloc
<size
, big_endian
> Scan_strategy
;
8346 gold_assert(sh_type
== elfcpp::SHT_RELA
);
8348 gold::scan_relocatable_relocs
<size
, big_endian
, Scan_strategy
>(
8356 needs_special_offset_handling
,
8362 // Scan the relocs for --emit-relocs.
8364 template<int size
, bool big_endian
>
8366 Target_powerpc
<size
, big_endian
>::emit_relocs_scan(
8367 Symbol_table
* symtab
,
8369 Sized_relobj_file
<size
, big_endian
>* object
,
8370 unsigned int data_shndx
,
8371 unsigned int sh_type
,
8372 const unsigned char* prelocs
,
8374 Output_section
* output_section
,
8375 bool needs_special_offset_handling
,
8376 size_t local_symbol_count
,
8377 const unsigned char* plocal_syms
,
8378 Relocatable_relocs
* rr
)
8380 typedef gold::Default_classify_reloc
<elfcpp::SHT_RELA
, size
, big_endian
>
8382 typedef gold::Default_emit_relocs_strategy
<Classify_reloc
>
8383 Emit_relocs_strategy
;
8385 gold_assert(sh_type
== elfcpp::SHT_RELA
);
8387 gold::scan_relocatable_relocs
<size
, big_endian
, Emit_relocs_strategy
>(
8395 needs_special_offset_handling
,
8401 // Emit relocations for a section.
8402 // This is a modified version of the function by the same name in
8403 // target-reloc.h. Using relocate_special_relocatable for
8404 // R_PPC_PLTREL24 would require duplication of the entire body of the
8405 // loop, so we may as well duplicate the whole thing.
8407 template<int size
, bool big_endian
>
8409 Target_powerpc
<size
, big_endian
>::relocate_relocs(
8410 const Relocate_info
<size
, big_endian
>* relinfo
,
8411 unsigned int sh_type
,
8412 const unsigned char* prelocs
,
8414 Output_section
* output_section
,
8415 typename
elfcpp::Elf_types
<size
>::Elf_Off offset_in_output_section
,
8417 Address view_address
,
8419 unsigned char* reloc_view
,
8420 section_size_type reloc_view_size
)
8422 gold_assert(sh_type
== elfcpp::SHT_RELA
);
8424 typedef typename Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::Reloc
8426 typedef typename Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::Reloc_write
8428 const int reloc_size
8429 = Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
8430 // Offset from start of insn to d-field reloc.
8431 const int d_offset
= big_endian
? 2 : 0;
8433 Powerpc_relobj
<size
, big_endian
>* const object
8434 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(relinfo
->object
);
8435 const unsigned int local_count
= object
->local_symbol_count();
8436 unsigned int got2_shndx
= object
->got2_shndx();
8437 Address got2_addend
= 0;
8438 if (got2_shndx
!= 0)
8440 got2_addend
= object
->get_output_section_offset(got2_shndx
);
8441 gold_assert(got2_addend
!= invalid_address
);
8444 unsigned char* pwrite
= reloc_view
;
8445 bool zap_next
= false;
8446 for (size_t i
= 0; i
< reloc_count
; ++i
, prelocs
+= reloc_size
)
8448 Relocatable_relocs::Reloc_strategy strategy
= relinfo
->rr
->strategy(i
);
8449 if (strategy
== Relocatable_relocs::RELOC_DISCARD
)
8452 Reltype
reloc(prelocs
);
8453 Reltype_write
reloc_write(pwrite
);
8455 Address offset
= reloc
.get_r_offset();
8456 typename
elfcpp::Elf_types
<size
>::Elf_WXword r_info
= reloc
.get_r_info();
8457 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(r_info
);
8458 unsigned int r_type
= elfcpp::elf_r_type
<size
>(r_info
);
8459 const unsigned int orig_r_sym
= r_sym
;
8460 typename
elfcpp::Elf_types
<size
>::Elf_Swxword addend
8461 = reloc
.get_r_addend();
8462 const Symbol
* gsym
= NULL
;
8466 // We could arrange to discard these and other relocs for
8467 // tls optimised sequences in the strategy methods, but for
8468 // now do as BFD ld does.
8469 r_type
= elfcpp::R_POWERPC_NONE
;
8473 // Get the new symbol index.
8474 Output_section
* os
= NULL
;
8475 if (r_sym
< local_count
)
8479 case Relocatable_relocs::RELOC_COPY
:
8480 case Relocatable_relocs::RELOC_SPECIAL
:
8483 r_sym
= object
->symtab_index(r_sym
);
8484 gold_assert(r_sym
!= -1U);
8488 case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
:
8490 // We are adjusting a section symbol. We need to find
8491 // the symbol table index of the section symbol for
8492 // the output section corresponding to input section
8493 // in which this symbol is defined.
8494 gold_assert(r_sym
< local_count
);
8496 unsigned int shndx
=
8497 object
->local_symbol_input_shndx(r_sym
, &is_ordinary
);
8498 gold_assert(is_ordinary
);
8499 os
= object
->output_section(shndx
);
8500 gold_assert(os
!= NULL
);
8501 gold_assert(os
->needs_symtab_index());
8502 r_sym
= os
->symtab_index();
8512 gsym
= object
->global_symbol(r_sym
);
8513 gold_assert(gsym
!= NULL
);
8514 if (gsym
->is_forwarder())
8515 gsym
= relinfo
->symtab
->resolve_forwards(gsym
);
8517 gold_assert(gsym
->has_symtab_index());
8518 r_sym
= gsym
->symtab_index();
8521 // Get the new offset--the location in the output section where
8522 // this relocation should be applied.
8523 if (static_cast<Address
>(offset_in_output_section
) != invalid_address
)
8524 offset
+= offset_in_output_section
;
8527 section_offset_type sot_offset
=
8528 convert_types
<section_offset_type
, Address
>(offset
);
8529 section_offset_type new_sot_offset
=
8530 output_section
->output_offset(object
, relinfo
->data_shndx
,
8532 gold_assert(new_sot_offset
!= -1);
8533 offset
= new_sot_offset
;
8536 // In an object file, r_offset is an offset within the section.
8537 // In an executable or dynamic object, generated by
8538 // --emit-relocs, r_offset is an absolute address.
8539 if (!parameters
->options().relocatable())
8541 offset
+= view_address
;
8542 if (static_cast<Address
>(offset_in_output_section
) != invalid_address
)
8543 offset
-= offset_in_output_section
;
8546 // Handle the reloc addend based on the strategy.
8547 if (strategy
== Relocatable_relocs::RELOC_COPY
)
8549 else if (strategy
== Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
)
8551 const Symbol_value
<size
>* psymval
= object
->local_symbol(orig_r_sym
);
8552 gold_assert(os
!= NULL
);
8553 addend
= psymval
->value(object
, addend
) - os
->address();
8555 else if (strategy
== Relocatable_relocs::RELOC_SPECIAL
)
8559 if (addend
>= 32768)
8560 addend
+= got2_addend
;
8562 else if (r_type
== elfcpp::R_POWERPC_REL16_HA
)
8564 r_type
= elfcpp::R_POWERPC_ADDR16_HA
;
8567 else if (r_type
== elfcpp::R_POWERPC_REL16_LO
)
8569 r_type
= elfcpp::R_POWERPC_ADDR16_LO
;
8570 addend
-= d_offset
+ 4;
8576 if (!parameters
->options().relocatable())
8578 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
8579 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
8580 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HI
8581 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HA
)
8583 // First instruction of a global dynamic sequence,
8585 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
8586 switch (this->optimize_tls_gd(final
))
8588 case tls::TLSOPT_TO_IE
:
8589 r_type
+= (elfcpp::R_POWERPC_GOT_TPREL16
8590 - elfcpp::R_POWERPC_GOT_TLSGD16
);
8592 case tls::TLSOPT_TO_LE
:
8593 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
8594 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
8595 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
8598 r_type
= elfcpp::R_POWERPC_NONE
;
8606 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
8607 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
8608 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HI
8609 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HA
)
8611 // First instruction of a local dynamic sequence,
8613 if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE
)
8615 if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
8616 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
)
8618 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
8619 const Output_section
* os
= relinfo
->layout
->tls_segment()
8621 gold_assert(os
!= NULL
);
8622 gold_assert(os
->needs_symtab_index());
8623 r_sym
= os
->symtab_index();
8624 addend
= dtp_offset
;
8628 r_type
= elfcpp::R_POWERPC_NONE
;
8633 else if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
8634 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
8635 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HI
8636 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HA
)
8638 // First instruction of initial exec sequence.
8639 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
8640 if (this->optimize_tls_ie(final
) == tls::TLSOPT_TO_LE
)
8642 if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
8643 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
)
8644 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
8647 r_type
= elfcpp::R_POWERPC_NONE
;
8652 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
8653 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
8655 // Second instruction of a global dynamic sequence,
8656 // the __tls_get_addr call
8657 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
8658 switch (this->optimize_tls_gd(final
))
8660 case tls::TLSOPT_TO_IE
:
8661 r_type
= elfcpp::R_POWERPC_NONE
;
8664 case tls::TLSOPT_TO_LE
:
8665 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
8673 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
8674 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
8676 // Second instruction of a local dynamic sequence,
8677 // the __tls_get_addr call
8678 if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE
)
8680 const Output_section
* os
= relinfo
->layout
->tls_segment()
8682 gold_assert(os
!= NULL
);
8683 gold_assert(os
->needs_symtab_index());
8684 r_sym
= os
->symtab_index();
8685 addend
= dtp_offset
;
8686 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
8691 else if (r_type
== elfcpp::R_POWERPC_TLS
)
8693 // Second instruction of an initial exec sequence
8694 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
8695 if (this->optimize_tls_ie(final
) == tls::TLSOPT_TO_LE
)
8697 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
8703 reloc_write
.put_r_offset(offset
);
8704 reloc_write
.put_r_info(elfcpp::elf_r_info
<size
>(r_sym
, r_type
));
8705 reloc_write
.put_r_addend(addend
);
8707 pwrite
+= reloc_size
;
8710 gold_assert(static_cast<section_size_type
>(pwrite
- reloc_view
)
8711 == reloc_view_size
);
8714 // Return the value to use for a dynamic symbol which requires special
8715 // treatment. This is how we support equality comparisons of function
8716 // pointers across shared library boundaries, as described in the
8717 // processor specific ABI supplement.
8719 template<int size
, bool big_endian
>
8721 Target_powerpc
<size
, big_endian
>::do_dynsym_value(const Symbol
* gsym
) const
8725 gold_assert(gsym
->is_from_dynobj() && gsym
->has_plt_offset());
8726 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
8727 p
!= this->stub_tables_
.end();
8730 Address off
= (*p
)->find_plt_call_entry(gsym
);
8731 if (off
!= invalid_address
)
8732 return (*p
)->stub_address() + off
;
8735 else if (this->abiversion() >= 2)
8737 Address off
= this->glink_section()->find_global_entry(gsym
);
8738 if (off
!= invalid_address
)
8739 return this->glink_section()->global_entry_address() + off
;
8744 // Return the PLT address to use for a local symbol.
8745 template<int size
, bool big_endian
>
8747 Target_powerpc
<size
, big_endian
>::do_plt_address_for_local(
8748 const Relobj
* object
,
8749 unsigned int symndx
) const
8753 const Sized_relobj
<size
, big_endian
>* relobj
8754 = static_cast<const Sized_relobj
<size
, big_endian
>*>(object
);
8755 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
8756 p
!= this->stub_tables_
.end();
8759 Address off
= (*p
)->find_plt_call_entry(relobj
->sized_relobj(),
8761 if (off
!= invalid_address
)
8762 return (*p
)->stub_address() + off
;
8768 // Return the PLT address to use for a global symbol.
8769 template<int size
, bool big_endian
>
8771 Target_powerpc
<size
, big_endian
>::do_plt_address_for_global(
8772 const Symbol
* gsym
) const
8776 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
8777 p
!= this->stub_tables_
.end();
8780 Address off
= (*p
)->find_plt_call_entry(gsym
);
8781 if (off
!= invalid_address
)
8782 return (*p
)->stub_address() + off
;
8785 else if (this->abiversion() >= 2)
8787 Address off
= this->glink_section()->find_global_entry(gsym
);
8788 if (off
!= invalid_address
)
8789 return this->glink_section()->global_entry_address() + off
;
8794 // Return the offset to use for the GOT_INDX'th got entry which is
8795 // for a local tls symbol specified by OBJECT, SYMNDX.
8796 template<int size
, bool big_endian
>
8798 Target_powerpc
<size
, big_endian
>::do_tls_offset_for_local(
8799 const Relobj
* object
,
8800 unsigned int symndx
,
8801 unsigned int got_indx
) const
8803 const Powerpc_relobj
<size
, big_endian
>* ppc_object
8804 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>(object
);
8805 if (ppc_object
->local_symbol(symndx
)->is_tls_symbol())
8807 for (Got_type got_type
= GOT_TYPE_TLSGD
;
8808 got_type
<= GOT_TYPE_TPREL
;
8809 got_type
= Got_type(got_type
+ 1))
8810 if (ppc_object
->local_has_got_offset(symndx
, got_type
))
8812 unsigned int off
= ppc_object
->local_got_offset(symndx
, got_type
);
8813 if (got_type
== GOT_TYPE_TLSGD
)
8815 if (off
== got_indx
* (size
/ 8))
8817 if (got_type
== GOT_TYPE_TPREL
)
8827 // Return the offset to use for the GOT_INDX'th got entry which is
8828 // for global tls symbol GSYM.
8829 template<int size
, bool big_endian
>
8831 Target_powerpc
<size
, big_endian
>::do_tls_offset_for_global(
8833 unsigned int got_indx
) const
8835 if (gsym
->type() == elfcpp::STT_TLS
)
8837 for (Got_type got_type
= GOT_TYPE_TLSGD
;
8838 got_type
<= GOT_TYPE_TPREL
;
8839 got_type
= Got_type(got_type
+ 1))
8840 if (gsym
->has_got_offset(got_type
))
8842 unsigned int off
= gsym
->got_offset(got_type
);
8843 if (got_type
== GOT_TYPE_TLSGD
)
8845 if (off
== got_indx
* (size
/ 8))
8847 if (got_type
== GOT_TYPE_TPREL
)
8857 // The selector for powerpc object files.
8859 template<int size
, bool big_endian
>
8860 class Target_selector_powerpc
: public Target_selector
8863 Target_selector_powerpc()
8864 : Target_selector(size
== 64 ? elfcpp::EM_PPC64
: elfcpp::EM_PPC
,
8867 ? (big_endian
? "elf64-powerpc" : "elf64-powerpcle")
8868 : (big_endian
? "elf32-powerpc" : "elf32-powerpcle")),
8870 ? (big_endian
? "elf64ppc" : "elf64lppc")
8871 : (big_endian
? "elf32ppc" : "elf32lppc")))
8875 do_instantiate_target()
8876 { return new Target_powerpc
<size
, big_endian
>(); }
8879 Target_selector_powerpc
<32, true> target_selector_ppc32
;
8880 Target_selector_powerpc
<32, false> target_selector_ppc32le
;
8881 Target_selector_powerpc
<64, true> target_selector_ppc64
;
8882 Target_selector_powerpc
<64, false> target_selector_ppc64le
;
8884 // Instantiate these constants for -O0
8885 template<int size
, bool big_endian
>
8886 const int Output_data_glink
<size
, big_endian
>::pltresolve_size
;
8887 template<int size
, bool big_endian
>
8888 const typename Output_data_glink
<size
, big_endian
>::Address
8889 Output_data_glink
<size
, big_endian
>::invalid_address
;
8890 template<int size
, bool big_endian
>
8891 const typename Stub_table
<size
, big_endian
>::Address
8892 Stub_table
<size
, big_endian
>::invalid_address
;
8893 template<int size
, bool big_endian
>
8894 const typename Target_powerpc
<size
, big_endian
>::Address
8895 Target_powerpc
<size
, big_endian
>::invalid_address
;
8897 } // End anonymous namespace.