1 // powerpc.cc -- powerpc target support for gold.
3 // Copyright (C) 2008-2014 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
>
66 is_branch_reloc(unsigned int r_type
);
68 template<int size
, bool big_endian
>
69 class Powerpc_relobj
: public Sized_relobj_file
<size
, big_endian
>
72 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
73 typedef Unordered_set
<Section_id
, Section_id_hash
> Section_refs
;
74 typedef Unordered_map
<Address
, Section_refs
> Access_from
;
76 Powerpc_relobj(const std::string
& name
, Input_file
* input_file
, off_t offset
,
77 const typename
elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
78 : Sized_relobj_file
<size
, big_endian
>(name
, input_file
, offset
, ehdr
),
79 special_(0), has_small_toc_reloc_(false), opd_valid_(false),
80 opd_ent_(), access_from_map_(), has14_(), stub_table_(),
81 e_flags_(ehdr
.get_e_flags()), st_other_()
83 this->set_abiversion(0);
89 // Read the symbols then set up st_other vector.
91 do_read_symbols(Read_symbols_data
*);
93 // The .got2 section shndx.
98 return this->special_
;
103 // The .opd section shndx.
110 return this->special_
;
113 // Init OPD entry arrays.
115 init_opd(size_t opd_size
)
117 size_t count
= this->opd_ent_ndx(opd_size
);
118 this->opd_ent_
.resize(count
);
121 // Return section and offset of function entry for .opd + R_OFF.
123 get_opd_ent(Address r_off
, Address
* value
= NULL
) const
125 size_t ndx
= this->opd_ent_ndx(r_off
);
126 gold_assert(ndx
< this->opd_ent_
.size());
127 gold_assert(this->opd_ent_
[ndx
].shndx
!= 0);
129 *value
= this->opd_ent_
[ndx
].off
;
130 return this->opd_ent_
[ndx
].shndx
;
133 // Set section and offset of function entry for .opd + R_OFF.
135 set_opd_ent(Address r_off
, unsigned int shndx
, Address value
)
137 size_t ndx
= this->opd_ent_ndx(r_off
);
138 gold_assert(ndx
< this->opd_ent_
.size());
139 this->opd_ent_
[ndx
].shndx
= shndx
;
140 this->opd_ent_
[ndx
].off
= value
;
143 // Return discard flag for .opd + R_OFF.
145 get_opd_discard(Address r_off
) const
147 size_t ndx
= this->opd_ent_ndx(r_off
);
148 gold_assert(ndx
< this->opd_ent_
.size());
149 return this->opd_ent_
[ndx
].discard
;
152 // Set discard flag for .opd + R_OFF.
154 set_opd_discard(Address r_off
)
156 size_t ndx
= this->opd_ent_ndx(r_off
);
157 gold_assert(ndx
< this->opd_ent_
.size());
158 this->opd_ent_
[ndx
].discard
= true;
163 { return this->opd_valid_
; }
167 { this->opd_valid_
= true; }
169 // Examine .rela.opd to build info about function entry points.
171 scan_opd_relocs(size_t reloc_count
,
172 const unsigned char* prelocs
,
173 const unsigned char* plocal_syms
);
175 // Perform the Sized_relobj_file method, then set up opd info from
178 do_read_relocs(Read_relocs_data
*);
181 do_find_special_sections(Read_symbols_data
* sd
);
183 // Adjust this local symbol value. Return false if the symbol
184 // should be discarded from the output file.
186 do_adjust_local_symbol(Symbol_value
<size
>* lv
) const
188 if (size
== 64 && this->opd_shndx() != 0)
191 if (lv
->input_shndx(&is_ordinary
) != this->opd_shndx())
193 if (this->get_opd_discard(lv
->input_value()))
201 { return &this->access_from_map_
; }
203 // Add a reference from SRC_OBJ, SRC_INDX to this object's .opd
204 // section at DST_OFF.
206 add_reference(Object
* src_obj
,
207 unsigned int src_indx
,
208 typename
elfcpp::Elf_types
<size
>::Elf_Addr dst_off
)
210 Section_id
src_id(src_obj
, src_indx
);
211 this->access_from_map_
[dst_off
].insert(src_id
);
214 // Add a reference to the code section specified by the .opd entry
217 add_gc_mark(typename
elfcpp::Elf_types
<size
>::Elf_Addr dst_off
)
219 size_t ndx
= this->opd_ent_ndx(dst_off
);
220 if (ndx
>= this->opd_ent_
.size())
221 this->opd_ent_
.resize(ndx
+ 1);
222 this->opd_ent_
[ndx
].gc_mark
= true;
226 process_gc_mark(Symbol_table
* symtab
)
228 for (size_t i
= 0; i
< this->opd_ent_
.size(); i
++)
229 if (this->opd_ent_
[i
].gc_mark
)
231 unsigned int shndx
= this->opd_ent_
[i
].shndx
;
232 symtab
->gc()->worklist().push(Section_id(this, shndx
));
236 // Return offset in output GOT section that this object will use
237 // as a TOC pointer. Won't be just a constant with multi-toc support.
239 toc_base_offset() const
243 set_has_small_toc_reloc()
244 { has_small_toc_reloc_
= true; }
247 has_small_toc_reloc() const
248 { return has_small_toc_reloc_
; }
251 set_has_14bit_branch(unsigned int shndx
)
253 if (shndx
>= this->has14_
.size())
254 this->has14_
.resize(shndx
+ 1);
255 this->has14_
[shndx
] = true;
259 has_14bit_branch(unsigned int shndx
) const
260 { return shndx
< this->has14_
.size() && this->has14_
[shndx
]; }
263 set_stub_table(unsigned int shndx
, Stub_table
<size
, big_endian
>* stub_table
)
265 if (shndx
>= this->stub_table_
.size())
266 this->stub_table_
.resize(shndx
+ 1);
267 this->stub_table_
[shndx
] = stub_table
;
270 Stub_table
<size
, big_endian
>*
271 stub_table(unsigned int shndx
)
273 if (shndx
< this->stub_table_
.size())
274 return this->stub_table_
[shndx
];
280 { return this->e_flags_
& elfcpp::EF_PPC64_ABI
; }
282 // Set ABI version for input and output
284 set_abiversion(int ver
);
287 ppc64_local_entry_offset(const Symbol
* sym
) const
288 { return elfcpp::ppc64_decode_local_entry(sym
->nonvis() >> 3); }
291 ppc64_local_entry_offset(unsigned int symndx
) const
292 { return elfcpp::ppc64_decode_local_entry(this->st_other_
[symndx
] >> 5); }
303 // Return index into opd_ent_ array for .opd entry at OFF.
304 // .opd entries are 24 bytes long, but they can be spaced 16 bytes
305 // apart when the language doesn't use the last 8-byte word, the
306 // environment pointer. Thus dividing the entry section offset by
307 // 16 will give an index into opd_ent_ that works for either layout
308 // of .opd. (It leaves some elements of the vector unused when .opd
309 // entries are spaced 24 bytes apart, but we don't know the spacing
310 // until relocations are processed, and in any case it is possible
311 // for an object to have some entries spaced 16 bytes apart and
312 // others 24 bytes apart.)
314 opd_ent_ndx(size_t off
) const
317 // For 32-bit the .got2 section shdnx, for 64-bit the .opd section shndx.
318 unsigned int special_
;
320 // For 64-bit, whether this object uses small model relocs to access
322 bool has_small_toc_reloc_
;
324 // Set at the start of gc_process_relocs, when we know opd_ent_
325 // vector is valid. The flag could be made atomic and set in
326 // do_read_relocs with memory_order_release and then tested with
327 // memory_order_acquire, potentially resulting in fewer entries in
331 // The first 8-byte word of an OPD entry gives the address of the
332 // entry point of the function. Relocatable object files have a
333 // relocation on this word. The following vector records the
334 // section and offset specified by these relocations.
335 std::vector
<Opd_ent
> opd_ent_
;
337 // References made to this object's .opd section when running
338 // gc_process_relocs for another object, before the opd_ent_ vector
339 // is valid for this object.
340 Access_from access_from_map_
;
342 // Whether input section has a 14-bit branch reloc.
343 std::vector
<bool> has14_
;
345 // The stub table to use for a given input section.
346 std::vector
<Stub_table
<size
, big_endian
>*> stub_table_
;
349 elfcpp::Elf_Word e_flags_
;
351 // ELF st_other field for local symbols.
352 std::vector
<unsigned char> st_other_
;
355 template<int size
, bool big_endian
>
356 class Powerpc_dynobj
: public Sized_dynobj
<size
, big_endian
>
359 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
361 Powerpc_dynobj(const std::string
& name
, Input_file
* input_file
, off_t offset
,
362 const typename
elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
363 : Sized_dynobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
),
364 opd_shndx_(0), opd_ent_(), e_flags_(ehdr
.get_e_flags())
366 this->set_abiversion(0);
372 // Call Sized_dynobj::do_read_symbols to read the symbols then
373 // read .opd from a dynamic object, filling in opd_ent_ vector,
375 do_read_symbols(Read_symbols_data
*);
377 // The .opd section shndx.
381 return this->opd_shndx_
;
384 // The .opd section address.
388 return this->opd_address_
;
391 // Init OPD entry arrays.
393 init_opd(size_t opd_size
)
395 size_t count
= this->opd_ent_ndx(opd_size
);
396 this->opd_ent_
.resize(count
);
399 // Return section and offset of function entry for .opd + R_OFF.
401 get_opd_ent(Address r_off
, Address
* value
= NULL
) const
403 size_t ndx
= this->opd_ent_ndx(r_off
);
404 gold_assert(ndx
< this->opd_ent_
.size());
405 gold_assert(this->opd_ent_
[ndx
].shndx
!= 0);
407 *value
= this->opd_ent_
[ndx
].off
;
408 return this->opd_ent_
[ndx
].shndx
;
411 // Set section and offset of function entry for .opd + R_OFF.
413 set_opd_ent(Address r_off
, unsigned int shndx
, Address value
)
415 size_t ndx
= this->opd_ent_ndx(r_off
);
416 gold_assert(ndx
< this->opd_ent_
.size());
417 this->opd_ent_
[ndx
].shndx
= shndx
;
418 this->opd_ent_
[ndx
].off
= value
;
423 { return this->e_flags_
& elfcpp::EF_PPC64_ABI
; }
425 // Set ABI version for input and output.
427 set_abiversion(int ver
);
430 // Used to specify extent of executable sections.
433 Sec_info(Address start_
, Address len_
, unsigned int shndx_
)
434 : start(start_
), len(len_
), shndx(shndx_
)
438 operator<(const Sec_info
& that
) const
439 { return this->start
< that
.start
; }
452 // Return index into opd_ent_ array for .opd entry at OFF.
454 opd_ent_ndx(size_t off
) const
457 // For 64-bit the .opd section shndx and address.
458 unsigned int opd_shndx_
;
459 Address opd_address_
;
461 // The first 8-byte word of an OPD entry gives the address of the
462 // entry point of the function. Records the section and offset
463 // corresponding to the address. Note that in dynamic objects,
464 // offset is *not* relative to the section.
465 std::vector
<Opd_ent
> opd_ent_
;
468 elfcpp::Elf_Word e_flags_
;
471 template<int size
, bool big_endian
>
472 class Target_powerpc
: public Sized_target
<size
, big_endian
>
476 Output_data_reloc
<elfcpp::SHT_RELA
, true, size
, big_endian
> Reloc_section
;
477 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
478 typedef typename
elfcpp::Elf_types
<size
>::Elf_Swxword Signed_address
;
479 static const Address invalid_address
= static_cast<Address
>(0) - 1;
480 // Offset of tp and dtp pointers from start of TLS block.
481 static const Address tp_offset
= 0x7000;
482 static const Address dtp_offset
= 0x8000;
485 : Sized_target
<size
, big_endian
>(&powerpc_info
),
486 got_(NULL
), plt_(NULL
), iplt_(NULL
), brlt_section_(NULL
),
487 glink_(NULL
), rela_dyn_(NULL
), copy_relocs_(elfcpp::R_POWERPC_COPY
),
488 tlsld_got_offset_(-1U),
489 stub_tables_(), branch_lookup_table_(), branch_info_(),
490 plt_thread_safe_(false)
494 // Process the relocations to determine unreferenced sections for
495 // garbage collection.
497 gc_process_relocs(Symbol_table
* symtab
,
499 Sized_relobj_file
<size
, big_endian
>* object
,
500 unsigned int data_shndx
,
501 unsigned int sh_type
,
502 const unsigned char* prelocs
,
504 Output_section
* output_section
,
505 bool needs_special_offset_handling
,
506 size_t local_symbol_count
,
507 const unsigned char* plocal_symbols
);
509 // Scan the relocations to look for symbol adjustments.
511 scan_relocs(Symbol_table
* symtab
,
513 Sized_relobj_file
<size
, big_endian
>* object
,
514 unsigned int data_shndx
,
515 unsigned int sh_type
,
516 const unsigned char* prelocs
,
518 Output_section
* output_section
,
519 bool needs_special_offset_handling
,
520 size_t local_symbol_count
,
521 const unsigned char* plocal_symbols
);
523 // Map input .toc section to output .got section.
525 do_output_section_name(const Relobj
*, const char* name
, size_t* plen
) const
527 if (size
== 64 && strcmp(name
, ".toc") == 0)
535 // Provide linker defined save/restore functions.
537 define_save_restore_funcs(Layout
*, Symbol_table
*);
539 // No stubs unless a final link.
542 { return !parameters
->options().relocatable(); }
545 do_relax(int, const Input_objects
*, Symbol_table
*, Layout
*, const Task
*);
548 do_plt_fde_location(const Output_data
*, unsigned char*,
549 uint64_t*, off_t
*) const;
551 // Stash info about branches, for stub generation.
553 push_branch(Powerpc_relobj
<size
, big_endian
>* ppc_object
,
554 unsigned int data_shndx
, Address r_offset
,
555 unsigned int r_type
, unsigned int r_sym
, Address addend
)
557 Branch_info
info(ppc_object
, data_shndx
, r_offset
, r_type
, r_sym
, addend
);
558 this->branch_info_
.push_back(info
);
559 if (r_type
== elfcpp::R_POWERPC_REL14
560 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
561 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
)
562 ppc_object
->set_has_14bit_branch(data_shndx
);
565 Stub_table
<size
, big_endian
>*
569 do_define_standard_symbols(Symbol_table
*, Layout
*);
571 // Finalize the sections.
573 do_finalize_sections(Layout
*, const Input_objects
*, Symbol_table
*);
575 // Return the value to use for a dynamic which requires special
578 do_dynsym_value(const Symbol
*) const;
580 // Return the PLT address to use for a local symbol.
582 do_plt_address_for_local(const Relobj
*, unsigned int) const;
584 // Return the PLT address to use for a global symbol.
586 do_plt_address_for_global(const Symbol
*) const;
588 // Return the offset to use for the GOT_INDX'th got entry which is
589 // for a local tls symbol specified by OBJECT, SYMNDX.
591 do_tls_offset_for_local(const Relobj
* object
,
593 unsigned int got_indx
) const;
595 // Return the offset to use for the GOT_INDX'th got entry which is
596 // for global tls symbol GSYM.
598 do_tls_offset_for_global(Symbol
* gsym
, unsigned int got_indx
) const;
601 do_function_location(Symbol_location
*) const;
604 do_can_check_for_function_pointers() const
607 // Relocate a section.
609 relocate_section(const Relocate_info
<size
, big_endian
>*,
610 unsigned int sh_type
,
611 const unsigned char* prelocs
,
613 Output_section
* output_section
,
614 bool needs_special_offset_handling
,
616 Address view_address
,
617 section_size_type view_size
,
618 const Reloc_symbol_changes
*);
620 // Scan the relocs during a relocatable link.
622 scan_relocatable_relocs(Symbol_table
* symtab
,
624 Sized_relobj_file
<size
, big_endian
>* object
,
625 unsigned int data_shndx
,
626 unsigned int sh_type
,
627 const unsigned char* prelocs
,
629 Output_section
* output_section
,
630 bool needs_special_offset_handling
,
631 size_t local_symbol_count
,
632 const unsigned char* plocal_symbols
,
633 Relocatable_relocs
*);
635 // Emit relocations for a section.
637 relocate_relocs(const Relocate_info
<size
, big_endian
>*,
638 unsigned int sh_type
,
639 const unsigned char* prelocs
,
641 Output_section
* output_section
,
642 typename
elfcpp::Elf_types
<size
>::Elf_Off
643 offset_in_output_section
,
644 const Relocatable_relocs
*,
646 Address view_address
,
648 unsigned char* reloc_view
,
649 section_size_type reloc_view_size
);
651 // Return whether SYM is defined by the ABI.
653 do_is_defined_by_abi(const Symbol
* sym
) const
655 return strcmp(sym
->name(), "__tls_get_addr") == 0;
658 // Return the size of the GOT section.
662 gold_assert(this->got_
!= NULL
);
663 return this->got_
->data_size();
666 // Get the PLT section.
667 const Output_data_plt_powerpc
<size
, big_endian
>*
670 gold_assert(this->plt_
!= NULL
);
674 // Get the IPLT section.
675 const Output_data_plt_powerpc
<size
, big_endian
>*
678 gold_assert(this->iplt_
!= NULL
);
682 // Get the .glink section.
683 const Output_data_glink
<size
, big_endian
>*
684 glink_section() const
686 gold_assert(this->glink_
!= NULL
);
690 Output_data_glink
<size
, big_endian
>*
693 gold_assert(this->glink_
!= NULL
);
697 bool has_glink() const
698 { return this->glink_
!= NULL
; }
700 // Get the GOT section.
701 const Output_data_got_powerpc
<size
, big_endian
>*
704 gold_assert(this->got_
!= NULL
);
708 // Get the GOT section, creating it if necessary.
709 Output_data_got_powerpc
<size
, big_endian
>*
710 got_section(Symbol_table
*, Layout
*);
713 do_make_elf_object(const std::string
&, Input_file
*, off_t
,
714 const elfcpp::Ehdr
<size
, big_endian
>&);
716 // Return the number of entries in the GOT.
718 got_entry_count() const
720 if (this->got_
== NULL
)
722 return this->got_size() / (size
/ 8);
725 // Return the number of entries in the PLT.
727 plt_entry_count() const;
729 // Return the offset of the first non-reserved PLT entry.
731 first_plt_entry_offset() const
735 if (this->abiversion() >= 2)
740 // Return the size of each PLT entry.
742 plt_entry_size() const
746 if (this->abiversion() >= 2)
751 // Add any special sections for this symbol to the gc work list.
752 // For powerpc64, this adds the code section of a function
755 do_gc_mark_symbol(Symbol_table
* symtab
, Symbol
* sym
) const;
757 // Handle target specific gc actions when adding a gc reference from
758 // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX
759 // and DST_OFF. For powerpc64, this adds a referenc to the code
760 // section of a function descriptor.
762 do_gc_add_reference(Symbol_table
* symtab
,
764 unsigned int src_shndx
,
766 unsigned int dst_shndx
,
767 Address dst_off
) const;
769 typedef std::vector
<Stub_table
<size
, big_endian
>*> Stub_tables
;
772 { return this->stub_tables_
; }
774 const Output_data_brlt_powerpc
<size
, big_endian
>*
776 { return this->brlt_section_
; }
779 add_branch_lookup_table(Address to
)
781 unsigned int off
= this->branch_lookup_table_
.size() * (size
/ 8);
782 this->branch_lookup_table_
.insert(std::make_pair(to
, off
));
786 find_branch_lookup_table(Address to
)
788 typename
Branch_lookup_table::const_iterator p
789 = this->branch_lookup_table_
.find(to
);
790 return p
== this->branch_lookup_table_
.end() ? invalid_address
: p
->second
;
794 write_branch_lookup_table(unsigned char *oview
)
796 for (typename
Branch_lookup_table::const_iterator p
797 = this->branch_lookup_table_
.begin();
798 p
!= this->branch_lookup_table_
.end();
801 elfcpp::Swap
<size
, big_endian
>::writeval(oview
+ p
->second
, p
->first
);
806 plt_thread_safe() const
807 { return this->plt_thread_safe_
; }
811 { return this->processor_specific_flags() & elfcpp::EF_PPC64_ABI
; }
814 set_abiversion (int ver
)
816 elfcpp::Elf_Word flags
= this->processor_specific_flags();
817 flags
&= ~elfcpp::EF_PPC64_ABI
;
818 flags
|= ver
& elfcpp::EF_PPC64_ABI
;
819 this->set_processor_specific_flags(flags
);
822 // Offset to to save stack slot
825 { return this->abiversion() < 2 ? 40 : 24; }
841 : tls_get_addr_(NOT_EXPECTED
),
842 relinfo_(NULL
), relnum_(0), r_offset_(0)
847 if (this->tls_get_addr_
!= NOT_EXPECTED
)
854 if (this->relinfo_
!= NULL
)
855 gold_error_at_location(this->relinfo_
, this->relnum_
, this->r_offset_
,
856 _("missing expected __tls_get_addr call"));
860 expect_tls_get_addr_call(
861 const Relocate_info
<size
, big_endian
>* relinfo
,
865 this->tls_get_addr_
= EXPECTED
;
866 this->relinfo_
= relinfo
;
867 this->relnum_
= relnum
;
868 this->r_offset_
= r_offset
;
872 expect_tls_get_addr_call()
873 { this->tls_get_addr_
= EXPECTED
; }
876 skip_next_tls_get_addr_call()
877 {this->tls_get_addr_
= SKIP
; }
880 maybe_skip_tls_get_addr_call(unsigned int r_type
, const Symbol
* gsym
)
882 bool is_tls_call
= ((r_type
== elfcpp::R_POWERPC_REL24
883 || r_type
== elfcpp::R_PPC_PLTREL24
)
885 && strcmp(gsym
->name(), "__tls_get_addr") == 0);
886 Tls_get_addr last_tls
= this->tls_get_addr_
;
887 this->tls_get_addr_
= NOT_EXPECTED
;
888 if (is_tls_call
&& last_tls
!= EXPECTED
)
890 else if (!is_tls_call
&& last_tls
!= NOT_EXPECTED
)
899 // What we're up to regarding calls to __tls_get_addr.
900 // On powerpc, the branch and link insn making a call to
901 // __tls_get_addr is marked with a relocation, R_PPC64_TLSGD,
902 // R_PPC64_TLSLD, R_PPC_TLSGD or R_PPC_TLSLD, in addition to the
903 // usual R_POWERPC_REL24 or R_PPC_PLTREL25 relocation on a call.
904 // The marker relocation always comes first, and has the same
905 // symbol as the reloc on the insn setting up the __tls_get_addr
906 // argument. This ties the arg setup insn with the call insn,
907 // allowing ld to safely optimize away the call. We check that
908 // every call to __tls_get_addr has a marker relocation, and that
909 // every marker relocation is on a call to __tls_get_addr.
910 Tls_get_addr tls_get_addr_
;
911 // Info about the last reloc for error message.
912 const Relocate_info
<size
, big_endian
>* relinfo_
;
917 // The class which scans relocations.
918 class Scan
: protected Track_tls
921 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
924 : Track_tls(), issued_non_pic_error_(false)
928 get_reference_flags(unsigned int r_type
, const Target_powerpc
* target
);
931 local(Symbol_table
* symtab
, Layout
* layout
, Target_powerpc
* target
,
932 Sized_relobj_file
<size
, big_endian
>* object
,
933 unsigned int data_shndx
,
934 Output_section
* output_section
,
935 const elfcpp::Rela
<size
, big_endian
>& reloc
, unsigned int r_type
,
936 const elfcpp::Sym
<size
, big_endian
>& lsym
,
940 global(Symbol_table
* symtab
, Layout
* layout
, Target_powerpc
* target
,
941 Sized_relobj_file
<size
, big_endian
>* object
,
942 unsigned int data_shndx
,
943 Output_section
* output_section
,
944 const elfcpp::Rela
<size
, big_endian
>& reloc
, unsigned int r_type
,
948 local_reloc_may_be_function_pointer(Symbol_table
* , Layout
* ,
950 Sized_relobj_file
<size
, big_endian
>* ,
953 const elfcpp::Rela
<size
, big_endian
>& ,
955 const elfcpp::Sym
<size
, big_endian
>&)
957 // PowerPC64 .opd is not folded, so any identical function text
958 // may be folded and we'll still keep function addresses distinct.
959 // That means no reloc is of concern here.
962 // For 32-bit, conservatively assume anything but calls to
963 // function code might be taking the address of the function.
964 return !is_branch_reloc(r_type
);
968 global_reloc_may_be_function_pointer(Symbol_table
* , Layout
* ,
970 Sized_relobj_file
<size
, big_endian
>* ,
973 const elfcpp::Rela
<size
, big_endian
>& ,
980 return !is_branch_reloc(r_type
);
984 reloc_needs_plt_for_ifunc(Target_powerpc
<size
, big_endian
>* target
,
985 Sized_relobj_file
<size
, big_endian
>* object
,
986 unsigned int r_type
, bool report_err
);
990 unsupported_reloc_local(Sized_relobj_file
<size
, big_endian
>*,
991 unsigned int r_type
);
994 unsupported_reloc_global(Sized_relobj_file
<size
, big_endian
>*,
995 unsigned int r_type
, Symbol
*);
998 generate_tls_call(Symbol_table
* symtab
, Layout
* layout
,
999 Target_powerpc
* target
);
1002 check_non_pic(Relobj
*, unsigned int r_type
);
1004 // Whether we have issued an error about a non-PIC compilation.
1005 bool issued_non_pic_error_
;
1009 symval_for_branch(const Symbol_table
* symtab
, Address value
,
1010 const Sized_symbol
<size
>* gsym
,
1011 Powerpc_relobj
<size
, big_endian
>* object
,
1012 unsigned int *dest_shndx
);
1014 // The class which implements relocation.
1015 class Relocate
: protected Track_tls
1018 // Use 'at' branch hints when true, 'y' when false.
1019 // FIXME maybe: set this with an option.
1020 static const bool is_isa_v2
= true;
1026 // Do a relocation. Return false if the caller should not issue
1027 // any warnings about this relocation.
1029 relocate(const Relocate_info
<size
, big_endian
>*, Target_powerpc
*,
1030 Output_section
*, size_t relnum
,
1031 const elfcpp::Rela
<size
, big_endian
>&,
1032 unsigned int r_type
, const Sized_symbol
<size
>*,
1033 const Symbol_value
<size
>*,
1035 typename
elfcpp::Elf_types
<size
>::Elf_Addr
,
1039 class Relocate_comdat_behavior
1042 // Decide what the linker should do for relocations that refer to
1043 // discarded comdat sections.
1044 inline Comdat_behavior
1045 get(const char* name
)
1047 gold::Default_comdat_behavior default_behavior
;
1048 Comdat_behavior ret
= default_behavior
.get(name
);
1049 if (ret
== CB_WARNING
)
1052 && (strcmp(name
, ".fixup") == 0
1053 || strcmp(name
, ".got2") == 0))
1056 && (strcmp(name
, ".opd") == 0
1057 || strcmp(name
, ".toc") == 0
1058 || strcmp(name
, ".toc1") == 0))
1065 // A class which returns the size required for a relocation type,
1066 // used while scanning relocs during a relocatable link.
1067 class Relocatable_size_for_reloc
1071 get_size_for_reloc(unsigned int, Relobj
*)
1078 // Optimize the TLS relocation type based on what we know about the
1079 // symbol. IS_FINAL is true if the final address of this symbol is
1080 // known at link time.
1082 tls::Tls_optimization
1083 optimize_tls_gd(bool is_final
)
1085 // If we are generating a shared library, then we can't do anything
1087 if (parameters
->options().shared())
1088 return tls::TLSOPT_NONE
;
1091 return tls::TLSOPT_TO_IE
;
1092 return tls::TLSOPT_TO_LE
;
1095 tls::Tls_optimization
1098 if (parameters
->options().shared())
1099 return tls::TLSOPT_NONE
;
1101 return tls::TLSOPT_TO_LE
;
1104 tls::Tls_optimization
1105 optimize_tls_ie(bool is_final
)
1107 if (!is_final
|| parameters
->options().shared())
1108 return tls::TLSOPT_NONE
;
1110 return tls::TLSOPT_TO_LE
;
1115 make_glink_section(Layout
*);
1117 // Create the PLT section.
1119 make_plt_section(Symbol_table
*, Layout
*);
1122 make_iplt_section(Symbol_table
*, Layout
*);
1125 make_brlt_section(Layout
*);
1127 // Create a PLT entry for a global symbol.
1129 make_plt_entry(Symbol_table
*, Layout
*, Symbol
*);
1131 // Create a PLT entry for a local IFUNC symbol.
1133 make_local_ifunc_plt_entry(Symbol_table
*, Layout
*,
1134 Sized_relobj_file
<size
, big_endian
>*,
1138 // Create a GOT entry for local dynamic __tls_get_addr.
1140 tlsld_got_offset(Symbol_table
* symtab
, Layout
* layout
,
1141 Sized_relobj_file
<size
, big_endian
>* object
);
1144 tlsld_got_offset() const
1146 return this->tlsld_got_offset_
;
1149 // Get the dynamic reloc section, creating it if necessary.
1151 rela_dyn_section(Layout
*);
1153 // Similarly, but for ifunc symbols get the one for ifunc.
1155 rela_dyn_section(Symbol_table
*, Layout
*, bool for_ifunc
);
1157 // Copy a relocation against a global symbol.
1159 copy_reloc(Symbol_table
* symtab
, Layout
* layout
,
1160 Sized_relobj_file
<size
, big_endian
>* object
,
1161 unsigned int shndx
, Output_section
* output_section
,
1162 Symbol
* sym
, const elfcpp::Rela
<size
, big_endian
>& reloc
)
1164 this->copy_relocs_
.copy_reloc(symtab
, layout
,
1165 symtab
->get_sized_symbol
<size
>(sym
),
1166 object
, shndx
, output_section
,
1167 reloc
, this->rela_dyn_section(layout
));
1170 // Look over all the input sections, deciding where to place stubs.
1172 group_sections(Layout
*, const Task
*);
1174 // Sort output sections by address.
1175 struct Sort_sections
1178 operator()(const Output_section
* sec1
, const Output_section
* sec2
)
1179 { return sec1
->address() < sec2
->address(); }
1185 Branch_info(Powerpc_relobj
<size
, big_endian
>* ppc_object
,
1186 unsigned int data_shndx
,
1188 unsigned int r_type
,
1191 : object_(ppc_object
), shndx_(data_shndx
), offset_(r_offset
),
1192 r_type_(r_type
), r_sym_(r_sym
), addend_(addend
)
1198 // If this branch needs a plt call stub, or a long branch stub, make one.
1200 make_stub(Stub_table
<size
, big_endian
>*,
1201 Stub_table
<size
, big_endian
>*,
1202 Symbol_table
*) const;
1205 // The branch location..
1206 Powerpc_relobj
<size
, big_endian
>* object_
;
1207 unsigned int shndx_
;
1209 // ..and the branch type and destination.
1210 unsigned int r_type_
;
1211 unsigned int r_sym_
;
1215 // Information about this specific target which we pass to the
1216 // general Target structure.
1217 static Target::Target_info powerpc_info
;
1219 // The types of GOT entries needed for this platform.
1220 // These values are exposed to the ABI in an incremental link.
1221 // Do not renumber existing values without changing the version
1222 // number of the .gnu_incremental_inputs section.
1226 GOT_TYPE_TLSGD
, // double entry for @got@tlsgd
1227 GOT_TYPE_DTPREL
, // entry for @got@dtprel
1228 GOT_TYPE_TPREL
// entry for @got@tprel
1232 Output_data_got_powerpc
<size
, big_endian
>* got_
;
1233 // The PLT section. This is a container for a table of addresses,
1234 // and their relocations. Each address in the PLT has a dynamic
1235 // relocation (R_*_JMP_SLOT) and each address will have a
1236 // corresponding entry in .glink for lazy resolution of the PLT.
1237 // ppc32 initialises the PLT to point at the .glink entry, while
1238 // ppc64 leaves this to ld.so. To make a call via the PLT, the
1239 // linker adds a stub that loads the PLT entry into ctr then
1240 // branches to ctr. There may be more than one stub for each PLT
1241 // entry. DT_JMPREL points at the first PLT dynamic relocation and
1242 // DT_PLTRELSZ gives the total size of PLT dynamic relocations.
1243 Output_data_plt_powerpc
<size
, big_endian
>* plt_
;
1244 // The IPLT section. Like plt_, this is a container for a table of
1245 // addresses and their relocations, specifically for STT_GNU_IFUNC
1246 // functions that resolve locally (STT_GNU_IFUNC functions that
1247 // don't resolve locally go in PLT). Unlike plt_, these have no
1248 // entry in .glink for lazy resolution, and the relocation section
1249 // does not have a 1-1 correspondence with IPLT addresses. In fact,
1250 // the relocation section may contain relocations against
1251 // STT_GNU_IFUNC symbols at locations outside of IPLT. The
1252 // relocation section will appear at the end of other dynamic
1253 // relocations, so that ld.so applies these relocations after other
1254 // dynamic relocations. In a static executable, the relocation
1255 // section is emitted and marked with __rela_iplt_start and
1256 // __rela_iplt_end symbols.
1257 Output_data_plt_powerpc
<size
, big_endian
>* iplt_
;
1258 // Section holding long branch destinations.
1259 Output_data_brlt_powerpc
<size
, big_endian
>* brlt_section_
;
1260 // The .glink section.
1261 Output_data_glink
<size
, big_endian
>* glink_
;
1262 // The dynamic reloc section.
1263 Reloc_section
* rela_dyn_
;
1264 // Relocs saved to avoid a COPY reloc.
1265 Copy_relocs
<elfcpp::SHT_RELA
, size
, big_endian
> copy_relocs_
;
1266 // Offset of the GOT entry for local dynamic __tls_get_addr calls.
1267 unsigned int tlsld_got_offset_
;
1269 Stub_tables stub_tables_
;
1270 typedef Unordered_map
<Address
, unsigned int> Branch_lookup_table
;
1271 Branch_lookup_table branch_lookup_table_
;
1273 typedef std::vector
<Branch_info
> Branches
;
1274 Branches branch_info_
;
1276 bool plt_thread_safe_
;
1280 Target::Target_info Target_powerpc
<32, true>::powerpc_info
=
1283 true, // is_big_endian
1284 elfcpp::EM_PPC
, // machine_code
1285 false, // has_make_symbol
1286 false, // has_resolve
1287 false, // has_code_fill
1288 true, // is_default_stack_executable
1289 false, // can_icf_inline_merge_sections
1291 "/usr/lib/ld.so.1", // dynamic_linker
1292 0x10000000, // default_text_segment_address
1293 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1294 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1295 false, // isolate_execinstr
1297 elfcpp::SHN_UNDEF
, // small_common_shndx
1298 elfcpp::SHN_UNDEF
, // large_common_shndx
1299 0, // small_common_section_flags
1300 0, // large_common_section_flags
1301 NULL
, // attributes_section
1302 NULL
, // attributes_vendor
1303 "_start" // entry_symbol_name
1307 Target::Target_info Target_powerpc
<32, false>::powerpc_info
=
1310 false, // is_big_endian
1311 elfcpp::EM_PPC
, // machine_code
1312 false, // has_make_symbol
1313 false, // has_resolve
1314 false, // has_code_fill
1315 true, // is_default_stack_executable
1316 false, // can_icf_inline_merge_sections
1318 "/usr/lib/ld.so.1", // dynamic_linker
1319 0x10000000, // default_text_segment_address
1320 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1321 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1322 false, // isolate_execinstr
1324 elfcpp::SHN_UNDEF
, // small_common_shndx
1325 elfcpp::SHN_UNDEF
, // large_common_shndx
1326 0, // small_common_section_flags
1327 0, // large_common_section_flags
1328 NULL
, // attributes_section
1329 NULL
, // attributes_vendor
1330 "_start" // entry_symbol_name
1334 Target::Target_info Target_powerpc
<64, true>::powerpc_info
=
1337 true, // is_big_endian
1338 elfcpp::EM_PPC64
, // machine_code
1339 false, // has_make_symbol
1340 false, // has_resolve
1341 false, // has_code_fill
1342 true, // is_default_stack_executable
1343 false, // can_icf_inline_merge_sections
1345 "/usr/lib/ld.so.1", // dynamic_linker
1346 0x10000000, // default_text_segment_address
1347 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1348 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1349 false, // isolate_execinstr
1351 elfcpp::SHN_UNDEF
, // small_common_shndx
1352 elfcpp::SHN_UNDEF
, // large_common_shndx
1353 0, // small_common_section_flags
1354 0, // large_common_section_flags
1355 NULL
, // attributes_section
1356 NULL
, // attributes_vendor
1357 "_start" // entry_symbol_name
1361 Target::Target_info Target_powerpc
<64, false>::powerpc_info
=
1364 false, // is_big_endian
1365 elfcpp::EM_PPC64
, // machine_code
1366 false, // has_make_symbol
1367 false, // has_resolve
1368 false, // has_code_fill
1369 true, // is_default_stack_executable
1370 false, // can_icf_inline_merge_sections
1372 "/usr/lib/ld.so.1", // dynamic_linker
1373 0x10000000, // default_text_segment_address
1374 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1375 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1376 false, // isolate_execinstr
1378 elfcpp::SHN_UNDEF
, // small_common_shndx
1379 elfcpp::SHN_UNDEF
, // large_common_shndx
1380 0, // small_common_section_flags
1381 0, // large_common_section_flags
1382 NULL
, // attributes_section
1383 NULL
, // attributes_vendor
1384 "_start" // entry_symbol_name
1388 is_branch_reloc(unsigned int r_type
)
1390 return (r_type
== elfcpp::R_POWERPC_REL24
1391 || r_type
== elfcpp::R_PPC_PLTREL24
1392 || r_type
== elfcpp::R_PPC_LOCAL24PC
1393 || r_type
== elfcpp::R_POWERPC_REL14
1394 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
1395 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
1396 || r_type
== elfcpp::R_POWERPC_ADDR24
1397 || r_type
== elfcpp::R_POWERPC_ADDR14
1398 || r_type
== elfcpp::R_POWERPC_ADDR14_BRTAKEN
1399 || r_type
== elfcpp::R_POWERPC_ADDR14_BRNTAKEN
);
1402 // If INSN is an opcode that may be used with an @tls operand, return
1403 // the transformed insn for TLS optimisation, otherwise return 0. If
1404 // REG is non-zero only match an insn with RB or RA equal to REG.
1406 at_tls_transform(uint32_t insn
, unsigned int reg
)
1408 if ((insn
& (0x3f << 26)) != 31 << 26)
1412 if (reg
== 0 || ((insn
>> 11) & 0x1f) == reg
)
1413 rtra
= insn
& ((1 << 26) - (1 << 16));
1414 else if (((insn
>> 16) & 0x1f) == reg
)
1415 rtra
= (insn
& (0x1f << 21)) | ((insn
& (0x1f << 11)) << 5);
1419 if ((insn
& (0x3ff << 1)) == 266 << 1)
1422 else if ((insn
& (0x1f << 1)) == 23 << 1
1423 && ((insn
& (0x1f << 6)) < 14 << 6
1424 || ((insn
& (0x1f << 6)) >= 16 << 6
1425 && (insn
& (0x1f << 6)) < 24 << 6)))
1426 // load and store indexed -> dform
1427 insn
= (32 | ((insn
>> 6) & 0x1f)) << 26;
1428 else if ((insn
& (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
1429 // ldx, ldux, stdx, stdux -> ld, ldu, std, stdu
1430 insn
= ((58 | ((insn
>> 6) & 4)) << 26) | ((insn
>> 6) & 1);
1431 else if ((insn
& (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
1433 insn
= (58 << 26) | 2;
1441 template<int size
, bool big_endian
>
1442 class Powerpc_relocate_functions
1462 typedef Powerpc_relocate_functions
<size
, big_endian
> This
;
1463 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
1465 template<int valsize
>
1467 has_overflow_signed(Address value
)
1469 // limit = 1 << (valsize - 1) without shift count exceeding size of type
1470 Address limit
= static_cast<Address
>(1) << ((valsize
- 1) >> 1);
1471 limit
<<= ((valsize
- 1) >> 1);
1472 limit
<<= ((valsize
- 1) - 2 * ((valsize
- 1) >> 1));
1473 return value
+ limit
> (limit
<< 1) - 1;
1476 template<int valsize
>
1478 has_overflow_unsigned(Address value
)
1480 Address limit
= static_cast<Address
>(1) << ((valsize
- 1) >> 1);
1481 limit
<<= ((valsize
- 1) >> 1);
1482 limit
<<= ((valsize
- 1) - 2 * ((valsize
- 1) >> 1));
1483 return value
> (limit
<< 1) - 1;
1486 template<int valsize
>
1488 has_overflow_bitfield(Address value
)
1490 return (has_overflow_unsigned
<valsize
>(value
)
1491 && has_overflow_signed
<valsize
>(value
));
1494 template<int valsize
>
1495 static inline Status
1496 overflowed(Address value
, Overflow_check overflow
)
1498 if (overflow
== CHECK_SIGNED
)
1500 if (has_overflow_signed
<valsize
>(value
))
1501 return STATUS_OVERFLOW
;
1503 else if (overflow
== CHECK_UNSIGNED
)
1505 if (has_overflow_unsigned
<valsize
>(value
))
1506 return STATUS_OVERFLOW
;
1508 else if (overflow
== CHECK_BITFIELD
)
1510 if (has_overflow_bitfield
<valsize
>(value
))
1511 return STATUS_OVERFLOW
;
1516 // Do a simple RELA relocation
1517 template<int valsize
>
1518 static inline Status
1519 rela(unsigned char* view
, Address value
, Overflow_check overflow
)
1521 typedef typename
elfcpp::Swap
<valsize
, big_endian
>::Valtype Valtype
;
1522 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
1523 elfcpp::Swap
<valsize
, big_endian
>::writeval(wv
, value
);
1524 return overflowed
<valsize
>(value
, overflow
);
1527 template<int valsize
>
1528 static inline Status
1529 rela(unsigned char* view
,
1530 unsigned int right_shift
,
1531 typename
elfcpp::Valtype_base
<valsize
>::Valtype dst_mask
,
1533 Overflow_check overflow
)
1535 typedef typename
elfcpp::Swap
<valsize
, big_endian
>::Valtype Valtype
;
1536 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
1537 Valtype val
= elfcpp::Swap
<valsize
, big_endian
>::readval(wv
);
1538 Valtype reloc
= value
>> right_shift
;
1541 elfcpp::Swap
<valsize
, big_endian
>::writeval(wv
, val
| reloc
);
1542 return overflowed
<valsize
>(value
>> right_shift
, overflow
);
1545 // Do a simple RELA relocation, unaligned.
1546 template<int valsize
>
1547 static inline Status
1548 rela_ua(unsigned char* view
, Address value
, Overflow_check overflow
)
1550 elfcpp::Swap_unaligned
<valsize
, big_endian
>::writeval(view
, value
);
1551 return overflowed
<valsize
>(value
, overflow
);
1554 template<int valsize
>
1555 static inline Status
1556 rela_ua(unsigned char* view
,
1557 unsigned int right_shift
,
1558 typename
elfcpp::Valtype_base
<valsize
>::Valtype dst_mask
,
1560 Overflow_check overflow
)
1562 typedef typename
elfcpp::Swap_unaligned
<valsize
, big_endian
>::Valtype
1564 Valtype val
= elfcpp::Swap
<valsize
, big_endian
>::readval(view
);
1565 Valtype reloc
= value
>> right_shift
;
1568 elfcpp::Swap_unaligned
<valsize
, big_endian
>::writeval(view
, val
| reloc
);
1569 return overflowed
<valsize
>(value
>> right_shift
, overflow
);
1573 // R_PPC64_ADDR64: (Symbol + Addend)
1575 addr64(unsigned char* view
, Address value
)
1576 { This::template rela
<64>(view
, value
, CHECK_NONE
); }
1578 // R_PPC64_UADDR64: (Symbol + Addend) unaligned
1580 addr64_u(unsigned char* view
, Address value
)
1581 { This::template rela_ua
<64>(view
, value
, CHECK_NONE
); }
1583 // R_POWERPC_ADDR32: (Symbol + Addend)
1584 static inline Status
1585 addr32(unsigned char* view
, Address value
, Overflow_check overflow
)
1586 { return This::template rela
<32>(view
, value
, overflow
); }
1588 // R_POWERPC_UADDR32: (Symbol + Addend) unaligned
1589 static inline Status
1590 addr32_u(unsigned char* view
, Address value
, Overflow_check overflow
)
1591 { return This::template rela_ua
<32>(view
, value
, overflow
); }
1593 // R_POWERPC_ADDR24: (Symbol + Addend) & 0x3fffffc
1594 static inline Status
1595 addr24(unsigned char* view
, Address value
, Overflow_check overflow
)
1597 Status stat
= This::template rela
<32>(view
, 0, 0x03fffffc, value
, overflow
);
1598 if (overflow
!= CHECK_NONE
&& (value
& 3) != 0)
1599 stat
= STATUS_OVERFLOW
;
1603 // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff
1604 static inline Status
1605 addr16(unsigned char* view
, Address value
, Overflow_check overflow
)
1606 { return This::template rela
<16>(view
, value
, overflow
); }
1608 // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff, unaligned
1609 static inline Status
1610 addr16_u(unsigned char* view
, Address value
, Overflow_check overflow
)
1611 { return This::template rela_ua
<16>(view
, value
, overflow
); }
1613 // R_POWERPC_ADDR16_DS: (Symbol + Addend) & 0xfffc
1614 static inline Status
1615 addr16_ds(unsigned char* view
, Address value
, Overflow_check overflow
)
1617 Status stat
= This::template rela
<16>(view
, 0, 0xfffc, value
, overflow
);
1618 if (overflow
!= CHECK_NONE
&& (value
& 3) != 0)
1619 stat
= STATUS_OVERFLOW
;
1623 // R_POWERPC_ADDR16_HI: ((Symbol + Addend) >> 16) & 0xffff
1625 addr16_hi(unsigned char* view
, Address value
)
1626 { This::template rela
<16>(view
, 16, 0xffff, value
, CHECK_NONE
); }
1628 // R_POWERPC_ADDR16_HA: ((Symbol + Addend + 0x8000) >> 16) & 0xffff
1630 addr16_ha(unsigned char* view
, Address value
)
1631 { This::addr16_hi(view
, value
+ 0x8000); }
1633 // R_POWERPC_ADDR16_HIGHER: ((Symbol + Addend) >> 32) & 0xffff
1635 addr16_hi2(unsigned char* view
, Address value
)
1636 { This::template rela
<16>(view
, 32, 0xffff, value
, CHECK_NONE
); }
1638 // R_POWERPC_ADDR16_HIGHERA: ((Symbol + Addend + 0x8000) >> 32) & 0xffff
1640 addr16_ha2(unsigned char* view
, Address value
)
1641 { This::addr16_hi2(view
, value
+ 0x8000); }
1643 // R_POWERPC_ADDR16_HIGHEST: ((Symbol + Addend) >> 48) & 0xffff
1645 addr16_hi3(unsigned char* view
, Address value
)
1646 { This::template rela
<16>(view
, 48, 0xffff, value
, CHECK_NONE
); }
1648 // R_POWERPC_ADDR16_HIGHESTA: ((Symbol + Addend + 0x8000) >> 48) & 0xffff
1650 addr16_ha3(unsigned char* view
, Address value
)
1651 { This::addr16_hi3(view
, value
+ 0x8000); }
1653 // R_POWERPC_ADDR14: (Symbol + Addend) & 0xfffc
1654 static inline Status
1655 addr14(unsigned char* view
, Address value
, Overflow_check overflow
)
1657 Status stat
= This::template rela
<32>(view
, 0, 0xfffc, value
, overflow
);
1658 if (overflow
!= CHECK_NONE
&& (value
& 3) != 0)
1659 stat
= STATUS_OVERFLOW
;
1664 // Set ABI version for input and output.
1666 template<int size
, bool big_endian
>
1668 Powerpc_relobj
<size
, big_endian
>::set_abiversion(int ver
)
1670 this->e_flags_
|= ver
;
1671 if (this->abiversion() != 0)
1673 Target_powerpc
<size
, big_endian
>* target
=
1674 static_cast<Target_powerpc
<size
, big_endian
>*>(
1675 parameters
->sized_target
<size
, big_endian
>());
1676 if (target
->abiversion() == 0)
1677 target
->set_abiversion(this->abiversion());
1678 else if (target
->abiversion() != this->abiversion())
1679 gold_error(_("%s: ABI version %d is not compatible "
1680 "with ABI version %d output"),
1681 this->name().c_str(),
1682 this->abiversion(), target
->abiversion());
1687 // Stash away the index of .got2 or .opd in a relocatable object, if
1688 // such a section exists.
1690 template<int size
, bool big_endian
>
1692 Powerpc_relobj
<size
, big_endian
>::do_find_special_sections(
1693 Read_symbols_data
* sd
)
1695 const unsigned char* const pshdrs
= sd
->section_headers
->data();
1696 const unsigned char* namesu
= sd
->section_names
->data();
1697 const char* names
= reinterpret_cast<const char*>(namesu
);
1698 section_size_type names_size
= sd
->section_names_size
;
1699 const unsigned char* s
;
1701 s
= this->template find_shdr
<size
, big_endian
>(pshdrs
,
1702 size
== 32 ? ".got2" : ".opd",
1703 names
, names_size
, NULL
);
1706 unsigned int ndx
= (s
- pshdrs
) / elfcpp::Elf_sizes
<size
>::shdr_size
;
1707 this->special_
= ndx
;
1710 if (this->abiversion() == 0)
1711 this->set_abiversion(1);
1712 else if (this->abiversion() > 1)
1713 gold_error(_("%s: .opd invalid in abiv%d"),
1714 this->name().c_str(), this->abiversion());
1717 return Sized_relobj_file
<size
, big_endian
>::do_find_special_sections(sd
);
1720 // Examine .rela.opd to build info about function entry points.
1722 template<int size
, bool big_endian
>
1724 Powerpc_relobj
<size
, big_endian
>::scan_opd_relocs(
1726 const unsigned char* prelocs
,
1727 const unsigned char* plocal_syms
)
1731 typedef typename Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::Reloc
1733 const int reloc_size
1734 = Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
1735 const int sym_size
= elfcpp::Elf_sizes
<size
>::sym_size
;
1736 Address expected_off
= 0;
1737 bool regular
= true;
1738 unsigned int opd_ent_size
= 0;
1740 for (size_t i
= 0; i
< reloc_count
; ++i
, prelocs
+= reloc_size
)
1742 Reltype
reloc(prelocs
);
1743 typename
elfcpp::Elf_types
<size
>::Elf_WXword r_info
1744 = reloc
.get_r_info();
1745 unsigned int r_type
= elfcpp::elf_r_type
<size
>(r_info
);
1746 if (r_type
== elfcpp::R_PPC64_ADDR64
)
1748 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(r_info
);
1749 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
;
1752 if (r_sym
< this->local_symbol_count())
1754 typename
elfcpp::Sym
<size
, big_endian
>
1755 lsym(plocal_syms
+ r_sym
* sym_size
);
1756 shndx
= lsym
.get_st_shndx();
1757 shndx
= this->adjust_sym_shndx(r_sym
, shndx
, &is_ordinary
);
1758 value
= lsym
.get_st_value();
1761 shndx
= this->symbol_section_and_value(r_sym
, &value
,
1763 this->set_opd_ent(reloc
.get_r_offset(), shndx
,
1764 value
+ reloc
.get_r_addend());
1767 expected_off
= reloc
.get_r_offset();
1768 opd_ent_size
= expected_off
;
1770 else if (expected_off
!= reloc
.get_r_offset())
1772 expected_off
+= opd_ent_size
;
1774 else if (r_type
== elfcpp::R_PPC64_TOC
)
1776 if (expected_off
- opd_ent_size
+ 8 != reloc
.get_r_offset())
1781 gold_warning(_("%s: unexpected reloc type %u in .opd section"),
1782 this->name().c_str(), r_type
);
1786 if (reloc_count
<= 2)
1787 opd_ent_size
= this->section_size(this->opd_shndx());
1788 if (opd_ent_size
!= 24 && opd_ent_size
!= 16)
1792 gold_warning(_("%s: .opd is not a regular array of opd entries"),
1793 this->name().c_str());
1799 template<int size
, bool big_endian
>
1801 Powerpc_relobj
<size
, big_endian
>::do_read_relocs(Read_relocs_data
* rd
)
1803 Sized_relobj_file
<size
, big_endian
>::do_read_relocs(rd
);
1806 for (Read_relocs_data::Relocs_list::iterator p
= rd
->relocs
.begin();
1807 p
!= rd
->relocs
.end();
1810 if (p
->data_shndx
== this->opd_shndx())
1812 uint64_t opd_size
= this->section_size(this->opd_shndx());
1813 gold_assert(opd_size
== static_cast<size_t>(opd_size
));
1816 this->init_opd(opd_size
);
1817 this->scan_opd_relocs(p
->reloc_count
, p
->contents
->data(),
1818 rd
->local_symbols
->data());
1826 // Read the symbols then set up st_other vector.
1828 template<int size
, bool big_endian
>
1830 Powerpc_relobj
<size
, big_endian
>::do_read_symbols(Read_symbols_data
* sd
)
1832 Sized_relobj_file
<size
, big_endian
>::do_read_symbols(sd
);
1835 const int shdr_size
= elfcpp::Elf_sizes
<size
>::shdr_size
;
1836 const unsigned char* const pshdrs
= sd
->section_headers
->data();
1837 const unsigned int loccount
= this->do_local_symbol_count();
1840 this->st_other_
.resize(loccount
);
1841 const int sym_size
= elfcpp::Elf_sizes
<size
>::sym_size
;
1842 off_t locsize
= loccount
* sym_size
;
1843 const unsigned int symtab_shndx
= this->symtab_shndx();
1844 const unsigned char *psymtab
= pshdrs
+ symtab_shndx
* shdr_size
;
1845 typename
elfcpp::Shdr
<size
, big_endian
> shdr(psymtab
);
1846 const unsigned char* psyms
= this->get_view(shdr
.get_sh_offset(),
1847 locsize
, true, false);
1849 for (unsigned int i
= 1; i
< loccount
; ++i
, psyms
+= sym_size
)
1851 elfcpp::Sym
<size
, big_endian
> sym(psyms
);
1852 unsigned char st_other
= sym
.get_st_other();
1853 this->st_other_
[i
] = st_other
;
1854 if ((st_other
& elfcpp::STO_PPC64_LOCAL_MASK
) != 0)
1856 if (this->abiversion() == 0)
1857 this->set_abiversion(2);
1858 else if (this->abiversion() < 2)
1859 gold_error(_("%s: local symbol %d has invalid st_other"
1860 " for ABI version 1"),
1861 this->name().c_str(), i
);
1868 template<int size
, bool big_endian
>
1870 Powerpc_dynobj
<size
, big_endian
>::set_abiversion(int ver
)
1872 this->e_flags_
|= ver
;
1873 if (this->abiversion() != 0)
1875 Target_powerpc
<size
, big_endian
>* target
=
1876 static_cast<Target_powerpc
<size
, big_endian
>*>(
1877 parameters
->sized_target
<size
, big_endian
>());
1878 if (target
->abiversion() == 0)
1879 target
->set_abiversion(this->abiversion());
1880 else if (target
->abiversion() != this->abiversion())
1881 gold_error(_("%s: ABI version %d is not compatible "
1882 "with ABI version %d output"),
1883 this->name().c_str(),
1884 this->abiversion(), target
->abiversion());
1889 // Call Sized_dynobj::do_read_symbols to read the symbols then
1890 // read .opd from a dynamic object, filling in opd_ent_ vector,
1892 template<int size
, bool big_endian
>
1894 Powerpc_dynobj
<size
, big_endian
>::do_read_symbols(Read_symbols_data
* sd
)
1896 Sized_dynobj
<size
, big_endian
>::do_read_symbols(sd
);
1899 const int shdr_size
= elfcpp::Elf_sizes
<size
>::shdr_size
;
1900 const unsigned char* const pshdrs
= sd
->section_headers
->data();
1901 const unsigned char* namesu
= sd
->section_names
->data();
1902 const char* names
= reinterpret_cast<const char*>(namesu
);
1903 const unsigned char* s
= NULL
;
1904 const unsigned char* opd
;
1905 section_size_type opd_size
;
1907 // Find and read .opd section.
1910 s
= this->template find_shdr
<size
, big_endian
>(pshdrs
, ".opd", names
,
1911 sd
->section_names_size
,
1916 typename
elfcpp::Shdr
<size
, big_endian
> shdr(s
);
1917 if (shdr
.get_sh_type() == elfcpp::SHT_PROGBITS
1918 && (shdr
.get_sh_flags() & elfcpp::SHF_ALLOC
) != 0)
1920 if (this->abiversion() == 0)
1921 this->set_abiversion(1);
1922 else if (this->abiversion() > 1)
1923 gold_error(_("%s: .opd invalid in abiv%d"),
1924 this->name().c_str(), this->abiversion());
1926 this->opd_shndx_
= (s
- pshdrs
) / shdr_size
;
1927 this->opd_address_
= shdr
.get_sh_addr();
1928 opd_size
= convert_to_section_size_type(shdr
.get_sh_size());
1929 opd
= this->get_view(shdr
.get_sh_offset(), opd_size
,
1935 // Build set of executable sections.
1936 // Using a set is probably overkill. There is likely to be only
1937 // a few executable sections, typically .init, .text and .fini,
1938 // and they are generally grouped together.
1939 typedef std::set
<Sec_info
> Exec_sections
;
1940 Exec_sections exec_sections
;
1942 for (unsigned int i
= 1; i
< this->shnum(); ++i
, s
+= shdr_size
)
1944 typename
elfcpp::Shdr
<size
, big_endian
> shdr(s
);
1945 if (shdr
.get_sh_type() == elfcpp::SHT_PROGBITS
1946 && ((shdr
.get_sh_flags()
1947 & (elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
))
1948 == (elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
))
1949 && shdr
.get_sh_size() != 0)
1951 exec_sections
.insert(Sec_info(shdr
.get_sh_addr(),
1952 shdr
.get_sh_size(), i
));
1955 if (exec_sections
.empty())
1958 // Look over the OPD entries. This is complicated by the fact
1959 // that some binaries will use two-word entries while others
1960 // will use the standard three-word entries. In most cases
1961 // the third word (the environment pointer for languages like
1962 // Pascal) is unused and will be zero. If the third word is
1963 // used it should not be pointing into executable sections,
1965 this->init_opd(opd_size
);
1966 for (const unsigned char* p
= opd
; p
< opd
+ opd_size
; p
+= 8)
1968 typedef typename
elfcpp::Swap
<64, big_endian
>::Valtype Valtype
;
1969 const Valtype
* valp
= reinterpret_cast<const Valtype
*>(p
);
1970 Valtype val
= elfcpp::Swap
<64, big_endian
>::readval(valp
);
1972 // Chances are that this is the third word of an OPD entry.
1974 typename
Exec_sections::const_iterator e
1975 = exec_sections
.upper_bound(Sec_info(val
, 0, 0));
1976 if (e
!= exec_sections
.begin())
1979 if (e
->start
<= val
&& val
< e
->start
+ e
->len
)
1981 // We have an address in an executable section.
1982 // VAL ought to be the function entry, set it up.
1983 this->set_opd_ent(p
- opd
, e
->shndx
, val
);
1984 // Skip second word of OPD entry, the TOC pointer.
1988 // If we didn't match any executable sections, we likely
1989 // have a non-zero third word in the OPD entry.
1994 // Set up some symbols.
1996 template<int size
, bool big_endian
>
1998 Target_powerpc
<size
, big_endian
>::do_define_standard_symbols(
1999 Symbol_table
* symtab
,
2004 // Define _GLOBAL_OFFSET_TABLE_ to ensure it isn't seen as
2005 // undefined when scanning relocs (and thus requires
2006 // non-relative dynamic relocs). The proper value will be
2008 Symbol
*gotsym
= symtab
->lookup("_GLOBAL_OFFSET_TABLE_", NULL
);
2009 if (gotsym
!= NULL
&& gotsym
->is_undefined())
2011 Target_powerpc
<size
, big_endian
>* target
=
2012 static_cast<Target_powerpc
<size
, big_endian
>*>(
2013 parameters
->sized_target
<size
, big_endian
>());
2014 Output_data_got_powerpc
<size
, big_endian
>* got
2015 = target
->got_section(symtab
, layout
);
2016 symtab
->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL
,
2017 Symbol_table::PREDEFINED
,
2021 elfcpp::STV_HIDDEN
, 0,
2025 // Define _SDA_BASE_ at the start of the .sdata section + 32768.
2026 Symbol
*sdasym
= symtab
->lookup("_SDA_BASE_", NULL
);
2027 if (sdasym
!= NULL
&& sdasym
->is_undefined())
2029 Output_data_space
* sdata
= new Output_data_space(4, "** sdata");
2031 = layout
->add_output_section_data(".sdata", 0,
2033 | elfcpp::SHF_WRITE
,
2034 sdata
, ORDER_SMALL_DATA
, false);
2035 symtab
->define_in_output_data("_SDA_BASE_", NULL
,
2036 Symbol_table::PREDEFINED
,
2037 os
, 32768, 0, elfcpp::STT_OBJECT
,
2038 elfcpp::STB_LOCAL
, elfcpp::STV_HIDDEN
,
2044 // Define .TOC. as for 32-bit _GLOBAL_OFFSET_TABLE_
2045 Symbol
*gotsym
= symtab
->lookup(".TOC.", NULL
);
2046 if (gotsym
!= NULL
&& gotsym
->is_undefined())
2048 Target_powerpc
<size
, big_endian
>* target
=
2049 static_cast<Target_powerpc
<size
, big_endian
>*>(
2050 parameters
->sized_target
<size
, big_endian
>());
2051 Output_data_got_powerpc
<size
, big_endian
>* got
2052 = target
->got_section(symtab
, layout
);
2053 symtab
->define_in_output_data(".TOC.", NULL
,
2054 Symbol_table::PREDEFINED
,
2058 elfcpp::STV_HIDDEN
, 0,
2064 // Set up PowerPC target specific relobj.
2066 template<int size
, bool big_endian
>
2068 Target_powerpc
<size
, big_endian
>::do_make_elf_object(
2069 const std::string
& name
,
2070 Input_file
* input_file
,
2071 off_t offset
, const elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
2073 int et
= ehdr
.get_e_type();
2074 // ET_EXEC files are valid input for --just-symbols/-R,
2075 // and we treat them as relocatable objects.
2076 if (et
== elfcpp::ET_REL
2077 || (et
== elfcpp::ET_EXEC
&& input_file
->just_symbols()))
2079 Powerpc_relobj
<size
, big_endian
>* obj
=
2080 new Powerpc_relobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
);
2084 else if (et
== elfcpp::ET_DYN
)
2086 Powerpc_dynobj
<size
, big_endian
>* obj
=
2087 new Powerpc_dynobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
);
2093 gold_error(_("%s: unsupported ELF file type %d"), name
.c_str(), et
);
2098 template<int size
, bool big_endian
>
2099 class Output_data_got_powerpc
: public Output_data_got
<size
, big_endian
>
2102 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Valtype
;
2103 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true, size
, big_endian
> Rela_dyn
;
2105 Output_data_got_powerpc(Symbol_table
* symtab
, Layout
* layout
)
2106 : Output_data_got
<size
, big_endian
>(),
2107 symtab_(symtab
), layout_(layout
),
2108 header_ent_cnt_(size
== 32 ? 3 : 1),
2109 header_index_(size
== 32 ? 0x2000 : 0)
2112 // Override all the Output_data_got methods we use so as to first call
2115 add_global(Symbol
* gsym
, unsigned int got_type
)
2117 this->reserve_ent();
2118 return Output_data_got
<size
, big_endian
>::add_global(gsym
, got_type
);
2122 add_global_plt(Symbol
* gsym
, unsigned int got_type
)
2124 this->reserve_ent();
2125 return Output_data_got
<size
, big_endian
>::add_global_plt(gsym
, got_type
);
2129 add_global_tls(Symbol
* gsym
, unsigned int got_type
)
2130 { return this->add_global_plt(gsym
, got_type
); }
2133 add_global_with_rel(Symbol
* gsym
, unsigned int got_type
,
2134 Output_data_reloc_generic
* rel_dyn
, unsigned int r_type
)
2136 this->reserve_ent();
2137 Output_data_got
<size
, big_endian
>::
2138 add_global_with_rel(gsym
, got_type
, rel_dyn
, r_type
);
2142 add_global_pair_with_rel(Symbol
* gsym
, unsigned int got_type
,
2143 Output_data_reloc_generic
* rel_dyn
,
2144 unsigned int r_type_1
, unsigned int r_type_2
)
2146 this->reserve_ent(2);
2147 Output_data_got
<size
, big_endian
>::
2148 add_global_pair_with_rel(gsym
, got_type
, rel_dyn
, r_type_1
, r_type_2
);
2152 add_local(Relobj
* object
, unsigned int sym_index
, unsigned int got_type
)
2154 this->reserve_ent();
2155 return Output_data_got
<size
, big_endian
>::add_local(object
, sym_index
,
2160 add_local_plt(Relobj
* object
, unsigned int sym_index
, unsigned int got_type
)
2162 this->reserve_ent();
2163 return Output_data_got
<size
, big_endian
>::add_local_plt(object
, sym_index
,
2168 add_local_tls(Relobj
* object
, unsigned int sym_index
, unsigned int got_type
)
2169 { return this->add_local_plt(object
, sym_index
, got_type
); }
2172 add_local_tls_pair(Relobj
* object
, unsigned int sym_index
,
2173 unsigned int got_type
,
2174 Output_data_reloc_generic
* rel_dyn
,
2175 unsigned int r_type
)
2177 this->reserve_ent(2);
2178 Output_data_got
<size
, big_endian
>::
2179 add_local_tls_pair(object
, sym_index
, got_type
, rel_dyn
, r_type
);
2183 add_constant(Valtype constant
)
2185 this->reserve_ent();
2186 return Output_data_got
<size
, big_endian
>::add_constant(constant
);
2190 add_constant_pair(Valtype c1
, Valtype c2
)
2192 this->reserve_ent(2);
2193 return Output_data_got
<size
, big_endian
>::add_constant_pair(c1
, c2
);
2196 // Offset of _GLOBAL_OFFSET_TABLE_.
2200 return this->got_offset(this->header_index_
);
2203 // Offset of base used to access the GOT/TOC.
2204 // The got/toc pointer reg will be set to this value.
2206 got_base_offset(const Powerpc_relobj
<size
, big_endian
>* object
) const
2209 return this->g_o_t();
2211 return (this->output_section()->address()
2212 + object
->toc_base_offset()
2216 // Ensure our GOT has a header.
2218 set_final_data_size()
2220 if (this->header_ent_cnt_
!= 0)
2221 this->make_header();
2222 Output_data_got
<size
, big_endian
>::set_final_data_size();
2225 // First word of GOT header needs some values that are not
2226 // handled by Output_data_got so poke them in here.
2227 // For 32-bit, address of .dynamic, for 64-bit, address of TOCbase.
2229 do_write(Output_file
* of
)
2232 if (size
== 32 && this->layout_
->dynamic_data() != NULL
)
2233 val
= this->layout_
->dynamic_section()->address();
2235 val
= this->output_section()->address() + 0x8000;
2236 this->replace_constant(this->header_index_
, val
);
2237 Output_data_got
<size
, big_endian
>::do_write(of
);
2242 reserve_ent(unsigned int cnt
= 1)
2244 if (this->header_ent_cnt_
== 0)
2246 if (this->num_entries() + cnt
> this->header_index_
)
2247 this->make_header();
2253 this->header_ent_cnt_
= 0;
2254 this->header_index_
= this->num_entries();
2257 Output_data_got
<size
, big_endian
>::add_constant(0);
2258 Output_data_got
<size
, big_endian
>::add_constant(0);
2259 Output_data_got
<size
, big_endian
>::add_constant(0);
2261 // Define _GLOBAL_OFFSET_TABLE_ at the header
2262 Symbol
*gotsym
= this->symtab_
->lookup("_GLOBAL_OFFSET_TABLE_", NULL
);
2265 Sized_symbol
<size
>* sym
= static_cast<Sized_symbol
<size
>*>(gotsym
);
2266 sym
->set_value(this->g_o_t());
2269 this->symtab_
->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL
,
2270 Symbol_table::PREDEFINED
,
2271 this, this->g_o_t(), 0,
2274 elfcpp::STV_HIDDEN
, 0,
2278 Output_data_got
<size
, big_endian
>::add_constant(0);
2281 // Stashed pointers.
2282 Symbol_table
* symtab_
;
2286 unsigned int header_ent_cnt_
;
2287 // GOT header index.
2288 unsigned int header_index_
;
2291 // Get the GOT section, creating it if necessary.
2293 template<int size
, bool big_endian
>
2294 Output_data_got_powerpc
<size
, big_endian
>*
2295 Target_powerpc
<size
, big_endian
>::got_section(Symbol_table
* symtab
,
2298 if (this->got_
== NULL
)
2300 gold_assert(symtab
!= NULL
&& layout
!= NULL
);
2303 = new Output_data_got_powerpc
<size
, big_endian
>(symtab
, layout
);
2305 layout
->add_output_section_data(".got", elfcpp::SHT_PROGBITS
,
2306 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
2307 this->got_
, ORDER_DATA
, false);
2313 // Get the dynamic reloc section, creating it if necessary.
2315 template<int size
, bool big_endian
>
2316 typename Target_powerpc
<size
, big_endian
>::Reloc_section
*
2317 Target_powerpc
<size
, big_endian
>::rela_dyn_section(Layout
* layout
)
2319 if (this->rela_dyn_
== NULL
)
2321 gold_assert(layout
!= NULL
);
2322 this->rela_dyn_
= new Reloc_section(parameters
->options().combreloc());
2323 layout
->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA
,
2324 elfcpp::SHF_ALLOC
, this->rela_dyn_
,
2325 ORDER_DYNAMIC_RELOCS
, false);
2327 return this->rela_dyn_
;
2330 // Similarly, but for ifunc symbols get the one for ifunc.
2332 template<int size
, bool big_endian
>
2333 typename Target_powerpc
<size
, big_endian
>::Reloc_section
*
2334 Target_powerpc
<size
, big_endian
>::rela_dyn_section(Symbol_table
* symtab
,
2339 return this->rela_dyn_section(layout
);
2341 if (this->iplt_
== NULL
)
2342 this->make_iplt_section(symtab
, layout
);
2343 return this->iplt_
->rel_plt();
2349 // Determine the stub group size. The group size is the absolute
2350 // value of the parameter --stub-group-size. If --stub-group-size
2351 // is passed a negative value, we restrict stubs to be always before
2352 // the stubbed branches.
2353 Stub_control(int32_t size
)
2354 : state_(NO_GROUP
), stub_group_size_(abs(size
)),
2355 stub14_group_size_(abs(size
)),
2356 stubs_always_before_branch_(size
< 0), suppress_size_errors_(false),
2357 group_end_addr_(0), owner_(NULL
), output_section_(NULL
)
2359 if (stub_group_size_
== 1)
2362 if (stubs_always_before_branch_
)
2364 stub_group_size_
= 0x1e00000;
2365 stub14_group_size_
= 0x7800;
2369 stub_group_size_
= 0x1c00000;
2370 stub14_group_size_
= 0x7000;
2372 suppress_size_errors_
= true;
2376 // Return true iff input section can be handled by current stub
2379 can_add_to_stub_group(Output_section
* o
,
2380 const Output_section::Input_section
* i
,
2383 const Output_section::Input_section
*
2389 { return output_section_
; }
2395 FINDING_STUB_SECTION
,
2400 uint32_t stub_group_size_
;
2401 uint32_t stub14_group_size_
;
2402 bool stubs_always_before_branch_
;
2403 bool suppress_size_errors_
;
2404 uint64_t group_end_addr_
;
2405 const Output_section::Input_section
* owner_
;
2406 Output_section
* output_section_
;
2409 // Return true iff input section can be handled by current stub
2413 Stub_control::can_add_to_stub_group(Output_section
* o
,
2414 const Output_section::Input_section
* i
,
2418 = has14
? this->stub14_group_size_
: this->stub_group_size_
;
2419 bool whole_sec
= o
->order() == ORDER_INIT
|| o
->order() == ORDER_FINI
;
2421 uint64_t start_addr
= o
->address();
2424 // .init and .fini sections are pasted together to form a single
2425 // function. We can't be adding stubs in the middle of the function.
2426 this_size
= o
->data_size();
2429 start_addr
+= i
->relobj()->output_section_offset(i
->shndx());
2430 this_size
= i
->data_size();
2432 uint64_t end_addr
= start_addr
+ this_size
;
2433 bool toobig
= this_size
> group_size
;
2435 if (toobig
&& !this->suppress_size_errors_
)
2436 gold_warning(_("%s:%s exceeds group size"),
2437 i
->relobj()->name().c_str(),
2438 i
->relobj()->section_name(i
->shndx()).c_str());
2440 if (this->state_
!= HAS_STUB_SECTION
2441 && (!whole_sec
|| this->output_section_
!= o
)
2442 && (this->state_
== NO_GROUP
2443 || this->group_end_addr_
- end_addr
< group_size
))
2446 this->output_section_
= o
;
2449 if (this->state_
== NO_GROUP
)
2451 this->state_
= FINDING_STUB_SECTION
;
2452 this->group_end_addr_
= end_addr
;
2454 else if (this->group_end_addr_
- start_addr
< group_size
)
2456 // Adding this section would make the group larger than GROUP_SIZE.
2457 else if (this->state_
== FINDING_STUB_SECTION
2458 && !this->stubs_always_before_branch_
2461 // But wait, there's more! Input sections up to GROUP_SIZE
2462 // bytes before the stub table can be handled by it too.
2463 this->state_
= HAS_STUB_SECTION
;
2464 this->group_end_addr_
= end_addr
;
2468 this->state_
= NO_GROUP
;
2474 // Look over all the input sections, deciding where to place stubs.
2476 template<int size
, bool big_endian
>
2478 Target_powerpc
<size
, big_endian
>::group_sections(Layout
* layout
,
2481 Stub_control
stub_control(parameters
->options().stub_group_size());
2483 // Group input sections and insert stub table
2484 Stub_table
<size
, big_endian
>* stub_table
= NULL
;
2485 Layout::Section_list section_list
;
2486 layout
->get_executable_sections(§ion_list
);
2487 std::stable_sort(section_list
.begin(), section_list
.end(), Sort_sections());
2488 for (Layout::Section_list::reverse_iterator o
= section_list
.rbegin();
2489 o
!= section_list
.rend();
2492 typedef Output_section::Input_section_list Input_section_list
;
2493 for (Input_section_list::const_reverse_iterator i
2494 = (*o
)->input_sections().rbegin();
2495 i
!= (*o
)->input_sections().rend();
2498 if (i
->is_input_section())
2500 Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
2501 <Powerpc_relobj
<size
, big_endian
>*>(i
->relobj());
2502 bool has14
= ppcobj
->has_14bit_branch(i
->shndx());
2503 if (!stub_control
.can_add_to_stub_group(*o
, &*i
, has14
))
2505 stub_table
->init(stub_control
.owner(),
2506 stub_control
.output_section());
2509 if (stub_table
== NULL
)
2510 stub_table
= this->new_stub_table();
2511 ppcobj
->set_stub_table(i
->shndx(), stub_table
);
2515 if (stub_table
!= NULL
)
2517 const Output_section::Input_section
* i
= stub_control
.owner();
2518 if (!i
->is_input_section())
2520 // Corner case. A new stub group was made for the first
2521 // section (last one looked at here) for some reason, but
2522 // the first section is already being used as the owner for
2523 // a stub table for following sections. Force it into that
2525 gold_assert(this->stub_tables_
.size() >= 2);
2526 this->stub_tables_
.pop_back();
2528 Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
2529 <Powerpc_relobj
<size
, big_endian
>*>(i
->relobj());
2530 ppcobj
->set_stub_table(i
->shndx(), this->stub_tables_
.back());
2533 stub_table
->init(i
, stub_control
.output_section());
2537 // If this branch needs a plt call stub, or a long branch stub, make one.
2539 template<int size
, bool big_endian
>
2541 Target_powerpc
<size
, big_endian
>::Branch_info::make_stub(
2542 Stub_table
<size
, big_endian
>* stub_table
,
2543 Stub_table
<size
, big_endian
>* ifunc_stub_table
,
2544 Symbol_table
* symtab
) const
2546 Symbol
* sym
= this->object_
->global_symbol(this->r_sym_
);
2547 if (sym
!= NULL
&& sym
->is_forwarder())
2548 sym
= symtab
->resolve_forwards(sym
);
2549 const Sized_symbol
<size
>* gsym
= static_cast<const Sized_symbol
<size
>*>(sym
);
2550 Target_powerpc
<size
, big_endian
>* target
=
2551 static_cast<Target_powerpc
<size
, big_endian
>*>(
2552 parameters
->sized_target
<size
, big_endian
>());
2554 ? gsym
->use_plt_offset(Scan::get_reference_flags(this->r_type_
, target
))
2555 : this->object_
->local_has_plt_offset(this->r_sym_
))
2559 && target
->abiversion() >= 2
2560 && !parameters
->options().output_is_position_independent()
2561 && !is_branch_reloc(this->r_type_
))
2562 target
->glink_section()->add_global_entry(gsym
);
2565 if (stub_table
== NULL
)
2566 stub_table
= this->object_
->stub_table(this->shndx_
);
2567 if (stub_table
== NULL
)
2569 // This is a ref from a data section to an ifunc symbol.
2570 stub_table
= ifunc_stub_table
;
2572 gold_assert(stub_table
!= NULL
);
2574 stub_table
->add_plt_call_entry(this->object_
, gsym
,
2575 this->r_type_
, this->addend_
);
2577 stub_table
->add_plt_call_entry(this->object_
, this->r_sym_
,
2578 this->r_type_
, this->addend_
);
2583 unsigned long max_branch_offset
;
2584 if (this->r_type_
== elfcpp::R_POWERPC_REL14
2585 || this->r_type_
== elfcpp::R_POWERPC_REL14_BRTAKEN
2586 || this->r_type_
== elfcpp::R_POWERPC_REL14_BRNTAKEN
)
2587 max_branch_offset
= 1 << 15;
2588 else if (this->r_type_
== elfcpp::R_POWERPC_REL24
2589 || this->r_type_
== elfcpp::R_PPC_PLTREL24
2590 || this->r_type_
== elfcpp::R_PPC_LOCAL24PC
)
2591 max_branch_offset
= 1 << 25;
2594 Address from
= this->object_
->get_output_section_offset(this->shndx_
);
2595 gold_assert(from
!= invalid_address
);
2596 from
+= (this->object_
->output_section(this->shndx_
)->address()
2601 switch (gsym
->source())
2603 case Symbol::FROM_OBJECT
:
2605 Object
* symobj
= gsym
->object();
2606 if (symobj
->is_dynamic()
2607 || symobj
->pluginobj() != NULL
)
2610 unsigned int shndx
= gsym
->shndx(&is_ordinary
);
2611 if (shndx
== elfcpp::SHN_UNDEF
)
2616 case Symbol::IS_UNDEFINED
:
2622 Symbol_table::Compute_final_value_status status
;
2623 to
= symtab
->compute_final_value
<size
>(gsym
, &status
);
2624 if (status
!= Symbol_table::CFVS_OK
)
2627 to
+= this->object_
->ppc64_local_entry_offset(gsym
);
2631 const Symbol_value
<size
>* psymval
2632 = this->object_
->local_symbol(this->r_sym_
);
2633 Symbol_value
<size
> symval
;
2634 typedef Sized_relobj_file
<size
, big_endian
> ObjType
;
2635 typename
ObjType::Compute_final_local_value_status status
2636 = this->object_
->compute_final_local_value(this->r_sym_
, psymval
,
2638 if (status
!= ObjType::CFLV_OK
2639 || !symval
.has_output_value())
2641 to
= symval
.value(this->object_
, 0);
2643 to
+= this->object_
->ppc64_local_entry_offset(this->r_sym_
);
2645 to
+= this->addend_
;
2646 if (stub_table
== NULL
)
2647 stub_table
= this->object_
->stub_table(this->shndx_
);
2648 if (size
== 64 && target
->abiversion() < 2)
2650 unsigned int dest_shndx
;
2651 to
= target
->symval_for_branch(symtab
, to
, gsym
,
2652 this->object_
, &dest_shndx
);
2654 Address delta
= to
- from
;
2655 if (delta
+ max_branch_offset
>= 2 * max_branch_offset
)
2657 if (stub_table
== NULL
)
2659 gold_warning(_("%s:%s: branch in non-executable section,"
2660 " no long branch stub for you"),
2661 this->object_
->name().c_str(),
2662 this->object_
->section_name(this->shndx_
).c_str());
2665 stub_table
->add_long_branch_entry(this->object_
, to
);
2670 // Relaxation hook. This is where we do stub generation.
2672 template<int size
, bool big_endian
>
2674 Target_powerpc
<size
, big_endian
>::do_relax(int pass
,
2675 const Input_objects
*,
2676 Symbol_table
* symtab
,
2680 unsigned int prev_brlt_size
= 0;
2684 = this->abiversion() < 2 && parameters
->options().plt_thread_safe();
2686 && this->abiversion() < 2
2688 && !parameters
->options().user_set_plt_thread_safe())
2690 static const char* const thread_starter
[] =
2694 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
2696 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
2697 "mq_notify", "create_timer",
2701 "GOMP_parallel_start",
2702 "GOMP_parallel_loop_static_start",
2703 "GOMP_parallel_loop_dynamic_start",
2704 "GOMP_parallel_loop_guided_start",
2705 "GOMP_parallel_loop_runtime_start",
2706 "GOMP_parallel_sections_start",
2709 if (parameters
->options().shared())
2713 for (unsigned int i
= 0;
2714 i
< sizeof(thread_starter
) / sizeof(thread_starter
[0]);
2717 Symbol
* sym
= symtab
->lookup(thread_starter
[i
], NULL
);
2718 thread_safe
= (sym
!= NULL
2720 && sym
->in_real_elf());
2726 this->plt_thread_safe_
= thread_safe
;
2727 this->group_sections(layout
, task
);
2730 // We need address of stub tables valid for make_stub.
2731 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
2732 p
!= this->stub_tables_
.end();
2735 const Powerpc_relobj
<size
, big_endian
>* object
2736 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>((*p
)->relobj());
2737 Address off
= object
->get_output_section_offset((*p
)->shndx());
2738 gold_assert(off
!= invalid_address
);
2739 Output_section
* os
= (*p
)->output_section();
2740 (*p
)->set_address_and_size(os
, off
);
2745 // Clear plt call stubs, long branch stubs and branch lookup table.
2746 prev_brlt_size
= this->branch_lookup_table_
.size();
2747 this->branch_lookup_table_
.clear();
2748 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
2749 p
!= this->stub_tables_
.end();
2752 (*p
)->clear_stubs();
2756 // Build all the stubs.
2757 Stub_table
<size
, big_endian
>* ifunc_stub_table
2758 = this->stub_tables_
.size() == 0 ? NULL
: this->stub_tables_
[0];
2759 Stub_table
<size
, big_endian
>* one_stub_table
2760 = this->stub_tables_
.size() != 1 ? NULL
: ifunc_stub_table
;
2761 for (typename
Branches::const_iterator b
= this->branch_info_
.begin();
2762 b
!= this->branch_info_
.end();
2765 b
->make_stub(one_stub_table
, ifunc_stub_table
, symtab
);
2768 // Did anything change size?
2769 unsigned int num_huge_branches
= this->branch_lookup_table_
.size();
2770 bool again
= num_huge_branches
!= prev_brlt_size
;
2771 if (size
== 64 && num_huge_branches
!= 0)
2772 this->make_brlt_section(layout
);
2773 if (size
== 64 && again
)
2774 this->brlt_section_
->set_current_size(num_huge_branches
);
2776 typedef Unordered_set
<Output_section
*> Output_sections
;
2777 Output_sections os_need_update
;
2778 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
2779 p
!= this->stub_tables_
.end();
2782 if ((*p
)->size_update())
2785 (*p
)->add_eh_frame(layout
);
2786 os_need_update
.insert((*p
)->output_section());
2790 // Set output section offsets for all input sections in an output
2791 // section that just changed size. Anything past the stubs will
2793 for (typename
Output_sections::iterator p
= os_need_update
.begin();
2794 p
!= os_need_update
.end();
2797 Output_section
* os
= *p
;
2799 typedef Output_section::Input_section_list Input_section_list
;
2800 for (Input_section_list::const_iterator i
= os
->input_sections().begin();
2801 i
!= os
->input_sections().end();
2804 off
= align_address(off
, i
->addralign());
2805 if (i
->is_input_section() || i
->is_relaxed_input_section())
2806 i
->relobj()->set_section_offset(i
->shndx(), off
);
2807 if (i
->is_relaxed_input_section())
2809 Stub_table
<size
, big_endian
>* stub_table
2810 = static_cast<Stub_table
<size
, big_endian
>*>(
2811 i
->relaxed_input_section());
2812 off
+= stub_table
->set_address_and_size(os
, off
);
2815 off
+= i
->data_size();
2817 // If .branch_lt is part of this output section, then we have
2818 // just done the offset adjustment.
2819 os
->clear_section_offsets_need_adjustment();
2824 && num_huge_branches
!= 0
2825 && parameters
->options().output_is_position_independent())
2827 // Fill in the BRLT relocs.
2828 this->brlt_section_
->reset_brlt_sizes();
2829 for (typename
Branch_lookup_table::const_iterator p
2830 = this->branch_lookup_table_
.begin();
2831 p
!= this->branch_lookup_table_
.end();
2834 this->brlt_section_
->add_reloc(p
->first
, p
->second
);
2836 this->brlt_section_
->finalize_brlt_sizes();
2841 template<int size
, bool big_endian
>
2843 Target_powerpc
<size
, big_endian
>::do_plt_fde_location(const Output_data
* plt
,
2844 unsigned char* oview
,
2848 uint64_t address
= plt
->address();
2849 off_t len
= plt
->data_size();
2851 if (plt
== this->glink_
)
2853 // See Output_data_glink::do_write() for glink contents.
2856 gold_assert(parameters
->doing_static_link());
2857 // Static linking may need stubs, to support ifunc and long
2858 // branches. We need to create an output section for
2859 // .eh_frame early in the link process, to have a place to
2860 // attach stub .eh_frame info. We also need to have
2861 // registered a CIE that matches the stub CIE. Both of
2862 // these requirements are satisfied by creating an FDE and
2863 // CIE for .glink, even though static linking will leave
2864 // .glink zero length.
2865 // ??? Hopefully generating an FDE with a zero address range
2866 // won't confuse anything that consumes .eh_frame info.
2868 else if (size
== 64)
2870 // There is one word before __glink_PLTresolve
2874 else if (parameters
->options().output_is_position_independent())
2876 // There are two FDEs for a position independent glink.
2877 // The first covers the branch table, the second
2878 // __glink_PLTresolve at the end of glink.
2879 off_t resolve_size
= this->glink_
->pltresolve_size
;
2880 if (oview
[9] == elfcpp::DW_CFA_nop
)
2881 len
-= resolve_size
;
2884 address
+= len
- resolve_size
;
2891 // Must be a stub table.
2892 const Stub_table
<size
, big_endian
>* stub_table
2893 = static_cast<const Stub_table
<size
, big_endian
>*>(plt
);
2894 uint64_t stub_address
= stub_table
->stub_address();
2895 len
-= stub_address
- address
;
2896 address
= stub_address
;
2899 *paddress
= address
;
2903 // A class to handle the PLT data.
2905 template<int size
, bool big_endian
>
2906 class Output_data_plt_powerpc
: public Output_section_data_build
2909 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true,
2910 size
, big_endian
> Reloc_section
;
2912 Output_data_plt_powerpc(Target_powerpc
<size
, big_endian
>* targ
,
2913 Reloc_section
* plt_rel
,
2915 : Output_section_data_build(size
== 32 ? 4 : 8),
2921 // Add an entry to the PLT.
2926 add_ifunc_entry(Symbol
*);
2929 add_local_ifunc_entry(Sized_relobj_file
<size
, big_endian
>*, unsigned int);
2931 // Return the .rela.plt section data.
2938 // Return the number of PLT entries.
2942 if (this->current_data_size() == 0)
2944 return ((this->current_data_size() - this->first_plt_entry_offset())
2945 / this->plt_entry_size());
2950 do_adjust_output_section(Output_section
* os
)
2955 // Write to a map file.
2957 do_print_to_mapfile(Mapfile
* mapfile
) const
2958 { mapfile
->print_output_data(this, this->name_
); }
2961 // Return the offset of the first non-reserved PLT entry.
2963 first_plt_entry_offset() const
2965 // IPLT has no reserved entry.
2966 if (this->name_
[3] == 'I')
2968 return this->targ_
->first_plt_entry_offset();
2971 // Return the size of each PLT entry.
2973 plt_entry_size() const
2975 return this->targ_
->plt_entry_size();
2978 // Write out the PLT data.
2980 do_write(Output_file
*);
2982 // The reloc section.
2983 Reloc_section
* rel_
;
2984 // Allows access to .glink for do_write.
2985 Target_powerpc
<size
, big_endian
>* targ_
;
2986 // What to report in map file.
2990 // Add an entry to the PLT.
2992 template<int size
, bool big_endian
>
2994 Output_data_plt_powerpc
<size
, big_endian
>::add_entry(Symbol
* gsym
)
2996 if (!gsym
->has_plt_offset())
2998 section_size_type off
= this->current_data_size();
3000 off
+= this->first_plt_entry_offset();
3001 gsym
->set_plt_offset(off
);
3002 gsym
->set_needs_dynsym_entry();
3003 unsigned int dynrel
= elfcpp::R_POWERPC_JMP_SLOT
;
3004 this->rel_
->add_global(gsym
, dynrel
, this, off
, 0);
3005 off
+= this->plt_entry_size();
3006 this->set_current_data_size(off
);
3010 // Add an entry for a global ifunc symbol that resolves locally, to the IPLT.
3012 template<int size
, bool big_endian
>
3014 Output_data_plt_powerpc
<size
, big_endian
>::add_ifunc_entry(Symbol
* gsym
)
3016 if (!gsym
->has_plt_offset())
3018 section_size_type off
= this->current_data_size();
3019 gsym
->set_plt_offset(off
);
3020 unsigned int dynrel
= elfcpp::R_POWERPC_IRELATIVE
;
3021 if (size
== 64 && this->targ_
->abiversion() < 2)
3022 dynrel
= elfcpp::R_PPC64_JMP_IREL
;
3023 this->rel_
->add_symbolless_global_addend(gsym
, dynrel
, this, off
, 0);
3024 off
+= this->plt_entry_size();
3025 this->set_current_data_size(off
);
3029 // Add an entry for a local ifunc symbol to the IPLT.
3031 template<int size
, bool big_endian
>
3033 Output_data_plt_powerpc
<size
, big_endian
>::add_local_ifunc_entry(
3034 Sized_relobj_file
<size
, big_endian
>* relobj
,
3035 unsigned int local_sym_index
)
3037 if (!relobj
->local_has_plt_offset(local_sym_index
))
3039 section_size_type off
= this->current_data_size();
3040 relobj
->set_local_plt_offset(local_sym_index
, off
);
3041 unsigned int dynrel
= elfcpp::R_POWERPC_IRELATIVE
;
3042 if (size
== 64 && this->targ_
->abiversion() < 2)
3043 dynrel
= elfcpp::R_PPC64_JMP_IREL
;
3044 this->rel_
->add_symbolless_local_addend(relobj
, local_sym_index
, dynrel
,
3046 off
+= this->plt_entry_size();
3047 this->set_current_data_size(off
);
3051 static const uint32_t add_0_11_11
= 0x7c0b5a14;
3052 static const uint32_t add_2_2_11
= 0x7c425a14;
3053 static const uint32_t add_3_3_2
= 0x7c631214;
3054 static const uint32_t add_3_3_13
= 0x7c636a14;
3055 static const uint32_t add_11_0_11
= 0x7d605a14;
3056 static const uint32_t add_11_2_11
= 0x7d625a14;
3057 static const uint32_t add_11_11_2
= 0x7d6b1214;
3058 static const uint32_t addi_0_12
= 0x380c0000;
3059 static const uint32_t addi_2_2
= 0x38420000;
3060 static const uint32_t addi_3_3
= 0x38630000;
3061 static const uint32_t addi_11_11
= 0x396b0000;
3062 static const uint32_t addi_12_12
= 0x398c0000;
3063 static const uint32_t addis_0_2
= 0x3c020000;
3064 static const uint32_t addis_0_13
= 0x3c0d0000;
3065 static const uint32_t addis_3_2
= 0x3c620000;
3066 static const uint32_t addis_3_13
= 0x3c6d0000;
3067 static const uint32_t addis_11_2
= 0x3d620000;
3068 static const uint32_t addis_11_11
= 0x3d6b0000;
3069 static const uint32_t addis_11_30
= 0x3d7e0000;
3070 static const uint32_t addis_12_12
= 0x3d8c0000;
3071 static const uint32_t b
= 0x48000000;
3072 static const uint32_t bcl_20_31
= 0x429f0005;
3073 static const uint32_t bctr
= 0x4e800420;
3074 static const uint32_t blr
= 0x4e800020;
3075 static const uint32_t bnectr_p4
= 0x4ce20420;
3076 static const uint32_t cmpldi_2_0
= 0x28220000;
3077 static const uint32_t cror_15_15_15
= 0x4def7b82;
3078 static const uint32_t cror_31_31_31
= 0x4ffffb82;
3079 static const uint32_t ld_0_1
= 0xe8010000;
3080 static const uint32_t ld_0_12
= 0xe80c0000;
3081 static const uint32_t ld_2_1
= 0xe8410000;
3082 static const uint32_t ld_2_2
= 0xe8420000;
3083 static const uint32_t ld_2_11
= 0xe84b0000;
3084 static const uint32_t ld_11_2
= 0xe9620000;
3085 static const uint32_t ld_11_11
= 0xe96b0000;
3086 static const uint32_t ld_12_2
= 0xe9820000;
3087 static const uint32_t ld_12_11
= 0xe98b0000;
3088 static const uint32_t ld_12_12
= 0xe98c0000;
3089 static const uint32_t lfd_0_1
= 0xc8010000;
3090 static const uint32_t li_0_0
= 0x38000000;
3091 static const uint32_t li_12_0
= 0x39800000;
3092 static const uint32_t lis_0_0
= 0x3c000000;
3093 static const uint32_t lis_11
= 0x3d600000;
3094 static const uint32_t lis_12
= 0x3d800000;
3095 static const uint32_t lvx_0_12_0
= 0x7c0c00ce;
3096 static const uint32_t lwz_0_12
= 0x800c0000;
3097 static const uint32_t lwz_11_11
= 0x816b0000;
3098 static const uint32_t lwz_11_30
= 0x817e0000;
3099 static const uint32_t lwz_12_12
= 0x818c0000;
3100 static const uint32_t lwzu_0_12
= 0x840c0000;
3101 static const uint32_t mflr_0
= 0x7c0802a6;
3102 static const uint32_t mflr_11
= 0x7d6802a6;
3103 static const uint32_t mflr_12
= 0x7d8802a6;
3104 static const uint32_t mtctr_0
= 0x7c0903a6;
3105 static const uint32_t mtctr_11
= 0x7d6903a6;
3106 static const uint32_t mtctr_12
= 0x7d8903a6;
3107 static const uint32_t mtlr_0
= 0x7c0803a6;
3108 static const uint32_t mtlr_12
= 0x7d8803a6;
3109 static const uint32_t nop
= 0x60000000;
3110 static const uint32_t ori_0_0_0
= 0x60000000;
3111 static const uint32_t srdi_0_0_2
= 0x7800f082;
3112 static const uint32_t std_0_1
= 0xf8010000;
3113 static const uint32_t std_0_12
= 0xf80c0000;
3114 static const uint32_t std_2_1
= 0xf8410000;
3115 static const uint32_t stfd_0_1
= 0xd8010000;
3116 static const uint32_t stvx_0_12_0
= 0x7c0c01ce;
3117 static const uint32_t sub_11_11_12
= 0x7d6c5850;
3118 static const uint32_t sub_12_12_11
= 0x7d8b6050;
3119 static const uint32_t xor_2_12_12
= 0x7d826278;
3120 static const uint32_t xor_11_12_12
= 0x7d8b6278;
3122 // Write out the PLT.
3124 template<int size
, bool big_endian
>
3126 Output_data_plt_powerpc
<size
, big_endian
>::do_write(Output_file
* of
)
3128 if (size
== 32 && this->name_
[3] != 'I')
3130 const section_size_type offset
= this->offset();
3131 const section_size_type oview_size
3132 = convert_to_section_size_type(this->data_size());
3133 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
3134 unsigned char* pov
= oview
;
3135 unsigned char* endpov
= oview
+ oview_size
;
3137 // The address of the .glink branch table
3138 const Output_data_glink
<size
, big_endian
>* glink
3139 = this->targ_
->glink_section();
3140 elfcpp::Elf_types
<32>::Elf_Addr branch_tab
= glink
->address();
3142 while (pov
< endpov
)
3144 elfcpp::Swap
<32, big_endian
>::writeval(pov
, branch_tab
);
3149 of
->write_output_view(offset
, oview_size
, oview
);
3153 // Create the PLT section.
3155 template<int size
, bool big_endian
>
3157 Target_powerpc
<size
, big_endian
>::make_plt_section(Symbol_table
* symtab
,
3160 if (this->plt_
== NULL
)
3162 if (this->got_
== NULL
)
3163 this->got_section(symtab
, layout
);
3165 if (this->glink_
== NULL
)
3166 make_glink_section(layout
);
3168 // Ensure that .rela.dyn always appears before .rela.plt This is
3169 // necessary due to how, on PowerPC and some other targets, .rela.dyn
3170 // needs to include .rela.plt in its range.
3171 this->rela_dyn_section(layout
);
3173 Reloc_section
* plt_rel
= new Reloc_section(false);
3174 layout
->add_output_section_data(".rela.plt", elfcpp::SHT_RELA
,
3175 elfcpp::SHF_ALLOC
, plt_rel
,
3176 ORDER_DYNAMIC_PLT_RELOCS
, false);
3178 = new Output_data_plt_powerpc
<size
, big_endian
>(this, plt_rel
,
3180 layout
->add_output_section_data(".plt",
3182 ? elfcpp::SHT_PROGBITS
3183 : elfcpp::SHT_NOBITS
),
3184 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
3193 // Create the IPLT section.
3195 template<int size
, bool big_endian
>
3197 Target_powerpc
<size
, big_endian
>::make_iplt_section(Symbol_table
* symtab
,
3200 if (this->iplt_
== NULL
)
3202 this->make_plt_section(symtab
, layout
);
3204 Reloc_section
* iplt_rel
= new Reloc_section(false);
3205 this->rela_dyn_
->output_section()->add_output_section_data(iplt_rel
);
3207 = new Output_data_plt_powerpc
<size
, big_endian
>(this, iplt_rel
,
3209 this->plt_
->output_section()->add_output_section_data(this->iplt_
);
3213 // A section for huge long branch addresses, similar to plt section.
3215 template<int size
, bool big_endian
>
3216 class Output_data_brlt_powerpc
: public Output_section_data_build
3219 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
3220 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true,
3221 size
, big_endian
> Reloc_section
;
3223 Output_data_brlt_powerpc(Target_powerpc
<size
, big_endian
>* targ
,
3224 Reloc_section
* brlt_rel
)
3225 : Output_section_data_build(size
== 32 ? 4 : 8),
3233 this->reset_data_size();
3234 this->rel_
->reset_data_size();
3238 finalize_brlt_sizes()
3240 this->finalize_data_size();
3241 this->rel_
->finalize_data_size();
3244 // Add a reloc for an entry in the BRLT.
3246 add_reloc(Address to
, unsigned int off
)
3247 { this->rel_
->add_relative(elfcpp::R_POWERPC_RELATIVE
, this, off
, to
); }
3249 // Update section and reloc section size.
3251 set_current_size(unsigned int num_branches
)
3253 this->reset_address_and_file_offset();
3254 this->set_current_data_size(num_branches
* 16);
3255 this->finalize_data_size();
3256 Output_section
* os
= this->output_section();
3257 os
->set_section_offsets_need_adjustment();
3258 if (this->rel_
!= NULL
)
3260 unsigned int reloc_size
3261 = Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
3262 this->rel_
->reset_address_and_file_offset();
3263 this->rel_
->set_current_data_size(num_branches
* reloc_size
);
3264 this->rel_
->finalize_data_size();
3265 Output_section
* os
= this->rel_
->output_section();
3266 os
->set_section_offsets_need_adjustment();
3272 do_adjust_output_section(Output_section
* os
)
3277 // Write to a map file.
3279 do_print_to_mapfile(Mapfile
* mapfile
) const
3280 { mapfile
->print_output_data(this, "** BRLT"); }
3283 // Write out the BRLT data.
3285 do_write(Output_file
*);
3287 // The reloc section.
3288 Reloc_section
* rel_
;
3289 Target_powerpc
<size
, big_endian
>* targ_
;
3292 // Make the branch lookup table section.
3294 template<int size
, bool big_endian
>
3296 Target_powerpc
<size
, big_endian
>::make_brlt_section(Layout
* layout
)
3298 if (size
== 64 && this->brlt_section_
== NULL
)
3300 Reloc_section
* brlt_rel
= NULL
;
3301 bool is_pic
= parameters
->options().output_is_position_independent();
3304 // When PIC we can't fill in .branch_lt (like .plt it can be
3305 // a bss style section) but must initialise at runtime via
3306 // dynamic relocats.
3307 this->rela_dyn_section(layout
);
3308 brlt_rel
= new Reloc_section(false);
3309 this->rela_dyn_
->output_section()->add_output_section_data(brlt_rel
);
3312 = new Output_data_brlt_powerpc
<size
, big_endian
>(this, brlt_rel
);
3313 if (this->plt_
&& is_pic
)
3314 this->plt_
->output_section()
3315 ->add_output_section_data(this->brlt_section_
);
3317 layout
->add_output_section_data(".branch_lt",
3318 (is_pic
? elfcpp::SHT_NOBITS
3319 : elfcpp::SHT_PROGBITS
),
3320 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
3321 this->brlt_section_
,
3322 (is_pic
? ORDER_SMALL_BSS
3323 : ORDER_SMALL_DATA
),
3328 // Write out .branch_lt when non-PIC.
3330 template<int size
, bool big_endian
>
3332 Output_data_brlt_powerpc
<size
, big_endian
>::do_write(Output_file
* of
)
3334 if (size
== 64 && !parameters
->options().output_is_position_independent())
3336 const section_size_type offset
= this->offset();
3337 const section_size_type oview_size
3338 = convert_to_section_size_type(this->data_size());
3339 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
3341 this->targ_
->write_branch_lookup_table(oview
);
3342 of
->write_output_view(offset
, oview_size
, oview
);
3346 static inline uint32_t
3352 static inline uint32_t
3358 static inline uint32_t
3361 return hi(a
+ 0x8000);
3367 static const unsigned char eh_frame_cie
[12];
3371 const unsigned char Eh_cie
<size
>::eh_frame_cie
[] =
3374 'z', 'R', 0, // Augmentation string.
3375 4, // Code alignment.
3376 0x80 - size
/ 8 , // Data alignment.
3378 1, // Augmentation size.
3379 (elfcpp::DW_EH_PE_pcrel
3380 | elfcpp::DW_EH_PE_sdata4
), // FDE encoding.
3381 elfcpp::DW_CFA_def_cfa
, 1, 0 // def_cfa: r1 offset 0.
3384 // Describe __glink_PLTresolve use of LR, 64-bit version ABIv1.
3385 static const unsigned char glink_eh_frame_fde_64v1
[] =
3387 0, 0, 0, 0, // Replaced with offset to .glink.
3388 0, 0, 0, 0, // Replaced with size of .glink.
3389 0, // Augmentation size.
3390 elfcpp::DW_CFA_advance_loc
+ 1,
3391 elfcpp::DW_CFA_register
, 65, 12,
3392 elfcpp::DW_CFA_advance_loc
+ 4,
3393 elfcpp::DW_CFA_restore_extended
, 65
3396 // Describe __glink_PLTresolve use of LR, 64-bit version ABIv2.
3397 static const unsigned char glink_eh_frame_fde_64v2
[] =
3399 0, 0, 0, 0, // Replaced with offset to .glink.
3400 0, 0, 0, 0, // Replaced with size of .glink.
3401 0, // Augmentation size.
3402 elfcpp::DW_CFA_advance_loc
+ 1,
3403 elfcpp::DW_CFA_register
, 65, 0,
3404 elfcpp::DW_CFA_advance_loc
+ 4,
3405 elfcpp::DW_CFA_restore_extended
, 65
3408 // Describe __glink_PLTresolve use of LR, 32-bit version.
3409 static const unsigned char glink_eh_frame_fde_32
[] =
3411 0, 0, 0, 0, // Replaced with offset to .glink.
3412 0, 0, 0, 0, // Replaced with size of .glink.
3413 0, // Augmentation size.
3414 elfcpp::DW_CFA_advance_loc
+ 2,
3415 elfcpp::DW_CFA_register
, 65, 0,
3416 elfcpp::DW_CFA_advance_loc
+ 4,
3417 elfcpp::DW_CFA_restore_extended
, 65
3420 static const unsigned char default_fde
[] =
3422 0, 0, 0, 0, // Replaced with offset to stubs.
3423 0, 0, 0, 0, // Replaced with size of stubs.
3424 0, // Augmentation size.
3425 elfcpp::DW_CFA_nop
, // Pad.
3430 template<bool big_endian
>
3432 write_insn(unsigned char* p
, uint32_t v
)
3434 elfcpp::Swap
<32, big_endian
>::writeval(p
, v
);
3437 // Stub_table holds information about plt and long branch stubs.
3438 // Stubs are built in an area following some input section determined
3439 // by group_sections(). This input section is converted to a relaxed
3440 // input section allowing it to be resized to accommodate the stubs
3442 template<int size
, bool big_endian
>
3443 class Stub_table
: public Output_relaxed_input_section
3446 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
3447 static const Address invalid_address
= static_cast<Address
>(0) - 1;
3449 Stub_table(Target_powerpc
<size
, big_endian
>* targ
)
3450 : Output_relaxed_input_section(NULL
, 0, 0),
3451 targ_(targ
), plt_call_stubs_(), long_branch_stubs_(),
3452 orig_data_size_(0), plt_size_(0), last_plt_size_(0),
3453 branch_size_(0), last_branch_size_(0), eh_frame_added_(false)
3456 // Delayed Output_relaxed_input_section init.
3458 init(const Output_section::Input_section
*, Output_section
*);
3460 // Add a plt call stub.
3462 add_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3468 add_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3473 // Find a given plt call stub.
3475 find_plt_call_entry(const Symbol
*) const;
3478 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3479 unsigned int) const;
3482 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3488 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3493 // Add a long branch stub.
3495 add_long_branch_entry(const Powerpc_relobj
<size
, big_endian
>*, Address
);
3498 find_long_branch_entry(const Powerpc_relobj
<size
, big_endian
>*,
3504 this->plt_call_stubs_
.clear();
3505 this->plt_size_
= 0;
3506 this->long_branch_stubs_
.clear();
3507 this->branch_size_
= 0;
3511 set_address_and_size(const Output_section
* os
, Address off
)
3513 Address start_off
= off
;
3514 off
+= this->orig_data_size_
;
3515 Address my_size
= this->plt_size_
+ this->branch_size_
;
3517 off
= align_address(off
, this->stub_align());
3518 // Include original section size and alignment padding in size
3519 my_size
+= off
- start_off
;
3520 this->reset_address_and_file_offset();
3521 this->set_current_data_size(my_size
);
3522 this->set_address_and_file_offset(os
->address() + start_off
,
3523 os
->offset() + start_off
);
3528 stub_address() const
3530 return align_address(this->address() + this->orig_data_size_
,
3531 this->stub_align());
3537 return align_address(this->offset() + this->orig_data_size_
,
3538 this->stub_align());
3543 { return this->plt_size_
; }
3548 Output_section
* os
= this->output_section();
3549 if (os
->addralign() < this->stub_align())
3551 os
->set_addralign(this->stub_align());
3552 // FIXME: get rid of the insane checkpointing.
3553 // We can't increase alignment of the input section to which
3554 // stubs are attached; The input section may be .init which
3555 // is pasted together with other .init sections to form a
3556 // function. Aligning might insert zero padding resulting in
3557 // sigill. However we do need to increase alignment of the
3558 // output section so that the align_address() on offset in
3559 // set_address_and_size() adds the same padding as the
3560 // align_address() on address in stub_address().
3561 // What's more, we need this alignment for the layout done in
3562 // relaxation_loop_body() so that the output section starts at
3563 // a suitably aligned address.
3564 os
->checkpoint_set_addralign(this->stub_align());
3566 if (this->last_plt_size_
!= this->plt_size_
3567 || this->last_branch_size_
!= this->branch_size_
)
3569 this->last_plt_size_
= this->plt_size_
;
3570 this->last_branch_size_
= this->branch_size_
;
3576 // Add .eh_frame info for this stub section. Unlike other linker
3577 // generated .eh_frame this is added late in the link, because we
3578 // only want the .eh_frame info if this particular stub section is
3581 add_eh_frame(Layout
* layout
)
3583 if (!this->eh_frame_added_
)
3585 if (!parameters
->options().ld_generated_unwind_info())
3588 // Since we add stub .eh_frame info late, it must be placed
3589 // after all other linker generated .eh_frame info so that
3590 // merge mapping need not be updated for input sections.
3591 // There is no provision to use a different CIE to that used
3593 if (!this->targ_
->has_glink())
3596 layout
->add_eh_frame_for_plt(this,
3597 Eh_cie
<size
>::eh_frame_cie
,
3598 sizeof (Eh_cie
<size
>::eh_frame_cie
),
3600 sizeof (default_fde
));
3601 this->eh_frame_added_
= true;
3605 Target_powerpc
<size
, big_endian
>*
3611 class Plt_stub_ent_hash
;
3612 typedef Unordered_map
<Plt_stub_ent
, unsigned int,
3613 Plt_stub_ent_hash
> Plt_stub_entries
;
3615 // Alignment of stub section.
3621 unsigned int min_align
= 32;
3622 unsigned int user_align
= 1 << parameters
->options().plt_align();
3623 return std::max(user_align
, min_align
);
3626 // Return the plt offset for the given call stub.
3628 plt_off(typename
Plt_stub_entries::const_iterator p
, bool* is_iplt
) const
3630 const Symbol
* gsym
= p
->first
.sym_
;
3633 *is_iplt
= (gsym
->type() == elfcpp::STT_GNU_IFUNC
3634 && gsym
->can_use_relative_reloc(false));
3635 return gsym
->plt_offset();
3640 const Sized_relobj_file
<size
, big_endian
>* relobj
= p
->first
.object_
;
3641 unsigned int local_sym_index
= p
->first
.locsym_
;
3642 return relobj
->local_plt_offset(local_sym_index
);
3646 // Size of a given plt call stub.
3648 plt_call_size(typename
Plt_stub_entries::const_iterator p
) const
3654 Address plt_addr
= this->plt_off(p
, &is_iplt
);
3656 plt_addr
+= this->targ_
->iplt_section()->address();
3658 plt_addr
+= this->targ_
->plt_section()->address();
3659 Address got_addr
= this->targ_
->got_section()->output_section()->address();
3660 const Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
3661 <const Powerpc_relobj
<size
, big_endian
>*>(p
->first
.object_
);
3662 got_addr
+= ppcobj
->toc_base_offset();
3663 Address off
= plt_addr
- got_addr
;
3664 unsigned int bytes
= 4 * 4 + 4 * (ha(off
) != 0);
3665 if (this->targ_
->abiversion() < 2)
3667 bool static_chain
= parameters
->options().plt_static_chain();
3668 bool thread_safe
= this->targ_
->plt_thread_safe();
3672 + 4 * (ha(off
+ 8 + 8 * static_chain
) != ha(off
)));
3674 unsigned int align
= 1 << parameters
->options().plt_align();
3676 bytes
= (bytes
+ align
- 1) & -align
;
3680 // Return long branch stub size.
3682 branch_stub_size(Address to
)
3685 = this->stub_address() + this->last_plt_size_
+ this->branch_size_
;
3686 if (to
- loc
+ (1 << 25) < 2 << 25)
3688 if (size
== 64 || !parameters
->options().output_is_position_independent())
3695 do_write(Output_file
*);
3697 // Plt call stub keys.
3701 Plt_stub_ent(const Symbol
* sym
)
3702 : sym_(sym
), object_(0), addend_(0), locsym_(0)
3705 Plt_stub_ent(const Sized_relobj_file
<size
, big_endian
>* object
,
3706 unsigned int locsym_index
)
3707 : sym_(NULL
), object_(object
), addend_(0), locsym_(locsym_index
)
3710 Plt_stub_ent(const Sized_relobj_file
<size
, big_endian
>* object
,
3712 unsigned int r_type
,
3714 : sym_(sym
), object_(0), addend_(0), locsym_(0)
3717 this->addend_
= addend
;
3718 else if (parameters
->options().output_is_position_independent()
3719 && r_type
== elfcpp::R_PPC_PLTREL24
)
3721 this->addend_
= addend
;
3722 if (this->addend_
>= 32768)
3723 this->object_
= object
;
3727 Plt_stub_ent(const Sized_relobj_file
<size
, big_endian
>* object
,
3728 unsigned int locsym_index
,
3729 unsigned int r_type
,
3731 : sym_(NULL
), object_(object
), addend_(0), locsym_(locsym_index
)
3734 this->addend_
= addend
;
3735 else if (parameters
->options().output_is_position_independent()
3736 && r_type
== elfcpp::R_PPC_PLTREL24
)
3737 this->addend_
= addend
;
3740 bool operator==(const Plt_stub_ent
& that
) const
3742 return (this->sym_
== that
.sym_
3743 && this->object_
== that
.object_
3744 && this->addend_
== that
.addend_
3745 && this->locsym_
== that
.locsym_
);
3749 const Sized_relobj_file
<size
, big_endian
>* object_
;
3750 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend_
;
3751 unsigned int locsym_
;
3754 class Plt_stub_ent_hash
3757 size_t operator()(const Plt_stub_ent
& ent
) const
3759 return (reinterpret_cast<uintptr_t>(ent
.sym_
)
3760 ^ reinterpret_cast<uintptr_t>(ent
.object_
)
3766 // Long branch stub keys.
3767 class Branch_stub_ent
3770 Branch_stub_ent(const Powerpc_relobj
<size
, big_endian
>* obj
, Address to
)
3771 : dest_(to
), toc_base_off_(0)
3774 toc_base_off_
= obj
->toc_base_offset();
3777 bool operator==(const Branch_stub_ent
& that
) const
3779 return (this->dest_
== that
.dest_
3781 || this->toc_base_off_
== that
.toc_base_off_
));
3785 unsigned int toc_base_off_
;
3788 class Branch_stub_ent_hash
3791 size_t operator()(const Branch_stub_ent
& ent
) const
3792 { return ent
.dest_
^ ent
.toc_base_off_
; }
3795 // In a sane world this would be a global.
3796 Target_powerpc
<size
, big_endian
>* targ_
;
3797 // Map sym/object/addend to stub offset.
3798 Plt_stub_entries plt_call_stubs_
;
3799 // Map destination address to stub offset.
3800 typedef Unordered_map
<Branch_stub_ent
, unsigned int,
3801 Branch_stub_ent_hash
> Branch_stub_entries
;
3802 Branch_stub_entries long_branch_stubs_
;
3803 // size of input section
3804 section_size_type orig_data_size_
;
3806 section_size_type plt_size_
, last_plt_size_
, branch_size_
, last_branch_size_
;
3807 // Whether .eh_frame info has been created for this stub section.
3808 bool eh_frame_added_
;
3811 // Make a new stub table, and record.
3813 template<int size
, bool big_endian
>
3814 Stub_table
<size
, big_endian
>*
3815 Target_powerpc
<size
, big_endian
>::new_stub_table()
3817 Stub_table
<size
, big_endian
>* stub_table
3818 = new Stub_table
<size
, big_endian
>(this);
3819 this->stub_tables_
.push_back(stub_table
);
3823 // Delayed stub table initialisation, because we create the stub table
3824 // before we know to which section it will be attached.
3826 template<int size
, bool big_endian
>
3828 Stub_table
<size
, big_endian
>::init(
3829 const Output_section::Input_section
* owner
,
3830 Output_section
* output_section
)
3832 this->set_relobj(owner
->relobj());
3833 this->set_shndx(owner
->shndx());
3834 this->set_addralign(this->relobj()->section_addralign(this->shndx()));
3835 this->set_output_section(output_section
);
3836 this->orig_data_size_
= owner
->current_data_size();
3838 std::vector
<Output_relaxed_input_section
*> new_relaxed
;
3839 new_relaxed
.push_back(this);
3840 output_section
->convert_input_sections_to_relaxed_sections(new_relaxed
);
3843 // Add a plt call stub, if we do not already have one for this
3844 // sym/object/addend combo.
3846 template<int size
, bool big_endian
>
3848 Stub_table
<size
, big_endian
>::add_plt_call_entry(
3849 const Sized_relobj_file
<size
, big_endian
>* object
,
3851 unsigned int r_type
,
3854 Plt_stub_ent
ent(object
, gsym
, r_type
, addend
);
3855 unsigned int off
= this->plt_size_
;
3856 std::pair
<typename
Plt_stub_entries::iterator
, bool> p
3857 = this->plt_call_stubs_
.insert(std::make_pair(ent
, off
));
3859 this->plt_size_
= off
+ this->plt_call_size(p
.first
);
3862 template<int size
, bool big_endian
>
3864 Stub_table
<size
, big_endian
>::add_plt_call_entry(
3865 const Sized_relobj_file
<size
, big_endian
>* object
,
3866 unsigned int locsym_index
,
3867 unsigned int r_type
,
3870 Plt_stub_ent
ent(object
, locsym_index
, r_type
, addend
);
3871 unsigned int off
= this->plt_size_
;
3872 std::pair
<typename
Plt_stub_entries::iterator
, bool> p
3873 = this->plt_call_stubs_
.insert(std::make_pair(ent
, off
));
3875 this->plt_size_
= off
+ this->plt_call_size(p
.first
);
3878 // Find a plt call stub.
3880 template<int size
, bool big_endian
>
3881 typename Stub_table
<size
, big_endian
>::Address
3882 Stub_table
<size
, big_endian
>::find_plt_call_entry(
3883 const Sized_relobj_file
<size
, big_endian
>* object
,
3885 unsigned int r_type
,
3886 Address addend
) const
3888 Plt_stub_ent
ent(object
, gsym
, r_type
, addend
);
3889 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
3890 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
3893 template<int size
, bool big_endian
>
3894 typename Stub_table
<size
, big_endian
>::Address
3895 Stub_table
<size
, big_endian
>::find_plt_call_entry(const Symbol
* gsym
) const
3897 Plt_stub_ent
ent(gsym
);
3898 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
3899 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
3902 template<int size
, bool big_endian
>
3903 typename Stub_table
<size
, big_endian
>::Address
3904 Stub_table
<size
, big_endian
>::find_plt_call_entry(
3905 const Sized_relobj_file
<size
, big_endian
>* object
,
3906 unsigned int locsym_index
,
3907 unsigned int r_type
,
3908 Address addend
) const
3910 Plt_stub_ent
ent(object
, locsym_index
, r_type
, addend
);
3911 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
3912 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
3915 template<int size
, bool big_endian
>
3916 typename Stub_table
<size
, big_endian
>::Address
3917 Stub_table
<size
, big_endian
>::find_plt_call_entry(
3918 const Sized_relobj_file
<size
, big_endian
>* object
,
3919 unsigned int locsym_index
) const
3921 Plt_stub_ent
ent(object
, locsym_index
);
3922 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
3923 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
3926 // Add a long branch stub if we don't already have one to given
3929 template<int size
, bool big_endian
>
3931 Stub_table
<size
, big_endian
>::add_long_branch_entry(
3932 const Powerpc_relobj
<size
, big_endian
>* object
,
3935 Branch_stub_ent
ent(object
, to
);
3936 Address off
= this->branch_size_
;
3937 if (this->long_branch_stubs_
.insert(std::make_pair(ent
, off
)).second
)
3939 unsigned int stub_size
= this->branch_stub_size(to
);
3940 this->branch_size_
= off
+ stub_size
;
3941 if (size
== 64 && stub_size
!= 4)
3942 this->targ_
->add_branch_lookup_table(to
);
3946 // Find long branch stub.
3948 template<int size
, bool big_endian
>
3949 typename Stub_table
<size
, big_endian
>::Address
3950 Stub_table
<size
, big_endian
>::find_long_branch_entry(
3951 const Powerpc_relobj
<size
, big_endian
>* object
,
3954 Branch_stub_ent
ent(object
, to
);
3955 typename
Branch_stub_entries::const_iterator p
3956 = this->long_branch_stubs_
.find(ent
);
3957 return p
== this->long_branch_stubs_
.end() ? invalid_address
: p
->second
;
3960 // A class to handle .glink.
3962 template<int size
, bool big_endian
>
3963 class Output_data_glink
: public Output_section_data
3966 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
3967 static const Address invalid_address
= static_cast<Address
>(0) - 1;
3968 static const int pltresolve_size
= 16*4;
3970 Output_data_glink(Target_powerpc
<size
, big_endian
>* targ
)
3971 : Output_section_data(16), targ_(targ
), global_entry_stubs_(),
3972 end_branch_table_(), ge_size_(0)
3976 add_eh_frame(Layout
* layout
);
3979 add_global_entry(const Symbol
*);
3982 find_global_entry(const Symbol
*) const;
3985 global_entry_address() const
3987 gold_assert(this->is_data_size_valid());
3988 unsigned int global_entry_off
= (this->end_branch_table_
+ 15) & -16;
3989 return this->address() + global_entry_off
;
3993 // Write to a map file.
3995 do_print_to_mapfile(Mapfile
* mapfile
) const
3996 { mapfile
->print_output_data(this, _("** glink")); }
4000 set_final_data_size();
4004 do_write(Output_file
*);
4006 // Allows access to .got and .plt for do_write.
4007 Target_powerpc
<size
, big_endian
>* targ_
;
4009 // Map sym to stub offset.
4010 typedef Unordered_map
<const Symbol
*, unsigned int> Global_entry_stub_entries
;
4011 Global_entry_stub_entries global_entry_stubs_
;
4013 unsigned int end_branch_table_
, ge_size_
;
4016 template<int size
, bool big_endian
>
4018 Output_data_glink
<size
, big_endian
>::add_eh_frame(Layout
* layout
)
4020 if (!parameters
->options().ld_generated_unwind_info())
4025 if (this->targ_
->abiversion() < 2)
4026 layout
->add_eh_frame_for_plt(this,
4027 Eh_cie
<64>::eh_frame_cie
,
4028 sizeof (Eh_cie
<64>::eh_frame_cie
),
4029 glink_eh_frame_fde_64v1
,
4030 sizeof (glink_eh_frame_fde_64v1
));
4032 layout
->add_eh_frame_for_plt(this,
4033 Eh_cie
<64>::eh_frame_cie
,
4034 sizeof (Eh_cie
<64>::eh_frame_cie
),
4035 glink_eh_frame_fde_64v2
,
4036 sizeof (glink_eh_frame_fde_64v2
));
4040 // 32-bit .glink can use the default since the CIE return
4041 // address reg, LR, is valid.
4042 layout
->add_eh_frame_for_plt(this,
4043 Eh_cie
<32>::eh_frame_cie
,
4044 sizeof (Eh_cie
<32>::eh_frame_cie
),
4046 sizeof (default_fde
));
4047 // Except where LR is used in a PIC __glink_PLTresolve.
4048 if (parameters
->options().output_is_position_independent())
4049 layout
->add_eh_frame_for_plt(this,
4050 Eh_cie
<32>::eh_frame_cie
,
4051 sizeof (Eh_cie
<32>::eh_frame_cie
),
4052 glink_eh_frame_fde_32
,
4053 sizeof (glink_eh_frame_fde_32
));
4057 template<int size
, bool big_endian
>
4059 Output_data_glink
<size
, big_endian
>::add_global_entry(const Symbol
* gsym
)
4061 std::pair
<typename
Global_entry_stub_entries::iterator
, bool> p
4062 = this->global_entry_stubs_
.insert(std::make_pair(gsym
, this->ge_size_
));
4064 this->ge_size_
+= 16;
4067 template<int size
, bool big_endian
>
4068 typename Output_data_glink
<size
, big_endian
>::Address
4069 Output_data_glink
<size
, big_endian
>::find_global_entry(const Symbol
* gsym
) const
4071 typename
Global_entry_stub_entries::const_iterator p
4072 = this->global_entry_stubs_
.find(gsym
);
4073 return p
== this->global_entry_stubs_
.end() ? invalid_address
: p
->second
;
4076 template<int size
, bool big_endian
>
4078 Output_data_glink
<size
, big_endian
>::set_final_data_size()
4080 unsigned int count
= this->targ_
->plt_entry_count();
4081 section_size_type total
= 0;
4087 // space for branch table
4088 total
+= 4 * (count
- 1);
4090 total
+= -total
& 15;
4091 total
+= this->pltresolve_size
;
4095 total
+= this->pltresolve_size
;
4097 // space for branch table
4099 if (this->targ_
->abiversion() < 2)
4103 total
+= 4 * (count
- 0x8000);
4107 this->end_branch_table_
= total
;
4108 total
= (total
+ 15) & -16;
4109 total
+= this->ge_size_
;
4111 this->set_data_size(total
);
4114 // Write out plt and long branch stub code.
4116 template<int size
, bool big_endian
>
4118 Stub_table
<size
, big_endian
>::do_write(Output_file
* of
)
4120 if (this->plt_call_stubs_
.empty()
4121 && this->long_branch_stubs_
.empty())
4124 const section_size_type start_off
= this->offset();
4125 const section_size_type off
= this->stub_offset();
4126 const section_size_type oview_size
=
4127 convert_to_section_size_type(this->data_size() - (off
- start_off
));
4128 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
4133 const Output_data_got_powerpc
<size
, big_endian
>* got
4134 = this->targ_
->got_section();
4135 Address got_os_addr
= got
->output_section()->address();
4137 if (!this->plt_call_stubs_
.empty())
4139 // The base address of the .plt section.
4140 Address plt_base
= this->targ_
->plt_section()->address();
4141 Address iplt_base
= invalid_address
;
4143 // Write out plt call stubs.
4144 typename
Plt_stub_entries::const_iterator cs
;
4145 for (cs
= this->plt_call_stubs_
.begin();
4146 cs
!= this->plt_call_stubs_
.end();
4150 Address pltoff
= this->plt_off(cs
, &is_iplt
);
4151 Address plt_addr
= pltoff
;
4154 if (iplt_base
== invalid_address
)
4155 iplt_base
= this->targ_
->iplt_section()->address();
4156 plt_addr
+= iplt_base
;
4159 plt_addr
+= plt_base
;
4160 const Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
4161 <const Powerpc_relobj
<size
, big_endian
>*>(cs
->first
.object_
);
4162 Address got_addr
= got_os_addr
+ ppcobj
->toc_base_offset();
4163 Address off
= plt_addr
- got_addr
;
4165 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
4166 gold_error(_("%s: linkage table error against `%s'"),
4167 cs
->first
.object_
->name().c_str(),
4168 cs
->first
.sym_
->demangled_name().c_str());
4170 bool plt_load_toc
= this->targ_
->abiversion() < 2;
4172 = plt_load_toc
&& parameters
->options().plt_static_chain();
4174 = plt_load_toc
&& this->targ_
->plt_thread_safe();
4175 bool use_fake_dep
= false;
4176 Address cmp_branch_off
= 0;
4179 unsigned int pltindex
4180 = ((pltoff
- this->targ_
->first_plt_entry_offset())
4181 / this->targ_
->plt_entry_size());
4183 = (this->targ_
->glink_section()->pltresolve_size
4185 if (pltindex
> 32768)
4186 glinkoff
+= (pltindex
- 32768) * 4;
4188 = this->targ_
->glink_section()->address() + glinkoff
;
4190 = (this->stub_address() + cs
->second
+ 24
4191 + 4 * (ha(off
) != 0)
4192 + 4 * (ha(off
+ 8 + 8 * static_chain
) != ha(off
))
4193 + 4 * static_chain
);
4194 cmp_branch_off
= to
- from
;
4195 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
4198 p
= oview
+ cs
->second
;
4201 write_insn
<big_endian
>(p
, std_2_1
+ this->targ_
->stk_toc());
4203 write_insn
<big_endian
>(p
, addis_11_2
+ ha(off
));
4205 write_insn
<big_endian
>(p
, ld_12_11
+ l(off
));
4208 && ha(off
+ 8 + 8 * static_chain
) != ha(off
))
4210 write_insn
<big_endian
>(p
, addi_11_11
+ l(off
));
4214 write_insn
<big_endian
>(p
, mtctr_12
);
4220 write_insn
<big_endian
>(p
, xor_2_12_12
);
4222 write_insn
<big_endian
>(p
, add_11_11_2
);
4225 write_insn
<big_endian
>(p
, ld_2_11
+ l(off
+ 8));
4229 write_insn
<big_endian
>(p
, ld_11_11
+ l(off
+ 16));
4236 write_insn
<big_endian
>(p
, std_2_1
+ this->targ_
->stk_toc());
4238 write_insn
<big_endian
>(p
, ld_12_2
+ l(off
));
4241 && ha(off
+ 8 + 8 * static_chain
) != ha(off
))
4243 write_insn
<big_endian
>(p
, addi_2_2
+ l(off
));
4247 write_insn
<big_endian
>(p
, mtctr_12
);
4253 write_insn
<big_endian
>(p
, xor_11_12_12
);
4255 write_insn
<big_endian
>(p
, add_2_2_11
);
4260 write_insn
<big_endian
>(p
, ld_11_2
+ l(off
+ 16));
4263 write_insn
<big_endian
>(p
, ld_2_2
+ l(off
+ 8));
4267 if (thread_safe
&& !use_fake_dep
)
4269 write_insn
<big_endian
>(p
, cmpldi_2_0
);
4271 write_insn
<big_endian
>(p
, bnectr_p4
);
4273 write_insn
<big_endian
>(p
, b
| (cmp_branch_off
& 0x3fffffc));
4276 write_insn
<big_endian
>(p
, bctr
);
4280 // Write out long branch stubs.
4281 typename
Branch_stub_entries::const_iterator bs
;
4282 for (bs
= this->long_branch_stubs_
.begin();
4283 bs
!= this->long_branch_stubs_
.end();
4286 p
= oview
+ this->plt_size_
+ bs
->second
;
4287 Address loc
= this->stub_address() + this->plt_size_
+ bs
->second
;
4288 Address delta
= bs
->first
.dest_
- loc
;
4289 if (delta
+ (1 << 25) < 2 << 25)
4290 write_insn
<big_endian
>(p
, b
| (delta
& 0x3fffffc));
4294 = this->targ_
->find_branch_lookup_table(bs
->first
.dest_
);
4295 gold_assert(brlt_addr
!= invalid_address
);
4296 brlt_addr
+= this->targ_
->brlt_section()->address();
4297 Address got_addr
= got_os_addr
+ bs
->first
.toc_base_off_
;
4298 Address brltoff
= brlt_addr
- got_addr
;
4299 if (ha(brltoff
) == 0)
4301 write_insn
<big_endian
>(p
, ld_12_2
+ l(brltoff
)), p
+= 4;
4305 write_insn
<big_endian
>(p
, addis_11_2
+ ha(brltoff
)), p
+= 4;
4306 write_insn
<big_endian
>(p
, ld_12_11
+ l(brltoff
)), p
+= 4;
4308 write_insn
<big_endian
>(p
, mtctr_12
), p
+= 4;
4309 write_insn
<big_endian
>(p
, bctr
);
4315 if (!this->plt_call_stubs_
.empty())
4317 // The base address of the .plt section.
4318 Address plt_base
= this->targ_
->plt_section()->address();
4319 Address iplt_base
= invalid_address
;
4320 // The address of _GLOBAL_OFFSET_TABLE_.
4321 Address g_o_t
= invalid_address
;
4323 // Write out plt call stubs.
4324 typename
Plt_stub_entries::const_iterator cs
;
4325 for (cs
= this->plt_call_stubs_
.begin();
4326 cs
!= this->plt_call_stubs_
.end();
4330 Address plt_addr
= this->plt_off(cs
, &is_iplt
);
4333 if (iplt_base
== invalid_address
)
4334 iplt_base
= this->targ_
->iplt_section()->address();
4335 plt_addr
+= iplt_base
;
4338 plt_addr
+= plt_base
;
4340 p
= oview
+ cs
->second
;
4341 if (parameters
->options().output_is_position_independent())
4344 const Powerpc_relobj
<size
, big_endian
>* ppcobj
4345 = (static_cast<const Powerpc_relobj
<size
, big_endian
>*>
4346 (cs
->first
.object_
));
4347 if (ppcobj
!= NULL
&& cs
->first
.addend_
>= 32768)
4349 unsigned int got2
= ppcobj
->got2_shndx();
4350 got_addr
= ppcobj
->get_output_section_offset(got2
);
4351 gold_assert(got_addr
!= invalid_address
);
4352 got_addr
+= (ppcobj
->output_section(got2
)->address()
4353 + cs
->first
.addend_
);
4357 if (g_o_t
== invalid_address
)
4359 const Output_data_got_powerpc
<size
, big_endian
>* got
4360 = this->targ_
->got_section();
4361 g_o_t
= got
->address() + got
->g_o_t();
4366 Address off
= plt_addr
- got_addr
;
4369 write_insn
<big_endian
>(p
+ 0, lwz_11_30
+ l(off
));
4370 write_insn
<big_endian
>(p
+ 4, mtctr_11
);
4371 write_insn
<big_endian
>(p
+ 8, bctr
);
4375 write_insn
<big_endian
>(p
+ 0, addis_11_30
+ ha(off
));
4376 write_insn
<big_endian
>(p
+ 4, lwz_11_11
+ l(off
));
4377 write_insn
<big_endian
>(p
+ 8, mtctr_11
);
4378 write_insn
<big_endian
>(p
+ 12, bctr
);
4383 write_insn
<big_endian
>(p
+ 0, lis_11
+ ha(plt_addr
));
4384 write_insn
<big_endian
>(p
+ 4, lwz_11_11
+ l(plt_addr
));
4385 write_insn
<big_endian
>(p
+ 8, mtctr_11
);
4386 write_insn
<big_endian
>(p
+ 12, bctr
);
4391 // Write out long branch stubs.
4392 typename
Branch_stub_entries::const_iterator bs
;
4393 for (bs
= this->long_branch_stubs_
.begin();
4394 bs
!= this->long_branch_stubs_
.end();
4397 p
= oview
+ this->plt_size_
+ bs
->second
;
4398 Address loc
= this->stub_address() + this->plt_size_
+ bs
->second
;
4399 Address delta
= bs
->first
.dest_
- loc
;
4400 if (delta
+ (1 << 25) < 2 << 25)
4401 write_insn
<big_endian
>(p
, b
| (delta
& 0x3fffffc));
4402 else if (!parameters
->options().output_is_position_independent())
4404 write_insn
<big_endian
>(p
+ 0, lis_12
+ ha(bs
->first
.dest_
));
4405 write_insn
<big_endian
>(p
+ 4, addi_12_12
+ l(bs
->first
.dest_
));
4406 write_insn
<big_endian
>(p
+ 8, mtctr_12
);
4407 write_insn
<big_endian
>(p
+ 12, bctr
);
4412 write_insn
<big_endian
>(p
+ 0, mflr_0
);
4413 write_insn
<big_endian
>(p
+ 4, bcl_20_31
);
4414 write_insn
<big_endian
>(p
+ 8, mflr_12
);
4415 write_insn
<big_endian
>(p
+ 12, addis_12_12
+ ha(delta
));
4416 write_insn
<big_endian
>(p
+ 16, addi_12_12
+ l(delta
));
4417 write_insn
<big_endian
>(p
+ 20, mtlr_0
);
4418 write_insn
<big_endian
>(p
+ 24, mtctr_12
);
4419 write_insn
<big_endian
>(p
+ 28, bctr
);
4425 // Write out .glink.
4427 template<int size
, bool big_endian
>
4429 Output_data_glink
<size
, big_endian
>::do_write(Output_file
* of
)
4431 const section_size_type off
= this->offset();
4432 const section_size_type oview_size
=
4433 convert_to_section_size_type(this->data_size());
4434 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
4437 // The base address of the .plt section.
4438 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
4439 Address plt_base
= this->targ_
->plt_section()->address();
4443 if (this->end_branch_table_
!= 0)
4445 // Write pltresolve stub.
4447 Address after_bcl
= this->address() + 16;
4448 Address pltoff
= plt_base
- after_bcl
;
4450 elfcpp::Swap
<64, big_endian
>::writeval(p
, pltoff
), p
+= 8;
4452 if (this->targ_
->abiversion() < 2)
4454 write_insn
<big_endian
>(p
, mflr_12
), p
+= 4;
4455 write_insn
<big_endian
>(p
, bcl_20_31
), p
+= 4;
4456 write_insn
<big_endian
>(p
, mflr_11
), p
+= 4;
4457 write_insn
<big_endian
>(p
, ld_2_11
+ l(-16)), p
+= 4;
4458 write_insn
<big_endian
>(p
, mtlr_12
), p
+= 4;
4459 write_insn
<big_endian
>(p
, add_11_2_11
), p
+= 4;
4460 write_insn
<big_endian
>(p
, ld_12_11
+ 0), p
+= 4;
4461 write_insn
<big_endian
>(p
, ld_2_11
+ 8), p
+= 4;
4462 write_insn
<big_endian
>(p
, mtctr_12
), p
+= 4;
4463 write_insn
<big_endian
>(p
, ld_11_11
+ 16), p
+= 4;
4467 write_insn
<big_endian
>(p
, mflr_0
), p
+= 4;
4468 write_insn
<big_endian
>(p
, bcl_20_31
), p
+= 4;
4469 write_insn
<big_endian
>(p
, mflr_11
), p
+= 4;
4470 write_insn
<big_endian
>(p
, ld_2_11
+ l(-16)), p
+= 4;
4471 write_insn
<big_endian
>(p
, mtlr_0
), p
+= 4;
4472 write_insn
<big_endian
>(p
, sub_12_12_11
), p
+= 4;
4473 write_insn
<big_endian
>(p
, add_11_2_11
), p
+= 4;
4474 write_insn
<big_endian
>(p
, addi_0_12
+ l(-48)), p
+= 4;
4475 write_insn
<big_endian
>(p
, ld_12_11
+ 0), p
+= 4;
4476 write_insn
<big_endian
>(p
, srdi_0_0_2
), p
+= 4;
4477 write_insn
<big_endian
>(p
, mtctr_12
), p
+= 4;
4478 write_insn
<big_endian
>(p
, ld_11_11
+ 8), p
+= 4;
4480 write_insn
<big_endian
>(p
, bctr
), p
+= 4;
4481 while (p
< oview
+ this->pltresolve_size
)
4482 write_insn
<big_endian
>(p
, nop
), p
+= 4;
4484 // Write lazy link call stubs.
4486 while (p
< oview
+ this->end_branch_table_
)
4488 if (this->targ_
->abiversion() < 2)
4492 write_insn
<big_endian
>(p
, li_0_0
+ indx
), p
+= 4;
4496 write_insn
<big_endian
>(p
, lis_0_0
+ hi(indx
)), p
+= 4;
4497 write_insn
<big_endian
>(p
, ori_0_0_0
+ l(indx
)), p
+= 4;
4500 uint32_t branch_off
= 8 - (p
- oview
);
4501 write_insn
<big_endian
>(p
, b
+ (branch_off
& 0x3fffffc)), p
+= 4;
4506 Address plt_base
= this->targ_
->plt_section()->address();
4507 Address iplt_base
= invalid_address
;
4508 unsigned int global_entry_off
= (this->end_branch_table_
+ 15) & -16;
4509 Address global_entry_base
= this->address() + global_entry_off
;
4510 typename
Global_entry_stub_entries::const_iterator ge
;
4511 for (ge
= this->global_entry_stubs_
.begin();
4512 ge
!= this->global_entry_stubs_
.end();
4515 p
= oview
+ global_entry_off
+ ge
->second
;
4516 Address plt_addr
= ge
->first
->plt_offset();
4517 if (ge
->first
->type() == elfcpp::STT_GNU_IFUNC
4518 && ge
->first
->can_use_relative_reloc(false))
4520 if (iplt_base
== invalid_address
)
4521 iplt_base
= this->targ_
->iplt_section()->address();
4522 plt_addr
+= iplt_base
;
4525 plt_addr
+= plt_base
;
4526 Address my_addr
= global_entry_base
+ ge
->second
;
4527 Address off
= plt_addr
- my_addr
;
4529 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
4530 gold_error(_("%s: linkage table error against `%s'"),
4531 ge
->first
->object()->name().c_str(),
4532 ge
->first
->demangled_name().c_str());
4534 write_insn
<big_endian
>(p
, addis_12_12
+ ha(off
)), p
+= 4;
4535 write_insn
<big_endian
>(p
, ld_12_12
+ l(off
)), p
+= 4;
4536 write_insn
<big_endian
>(p
, mtctr_12
), p
+= 4;
4537 write_insn
<big_endian
>(p
, bctr
);
4542 const Output_data_got_powerpc
<size
, big_endian
>* got
4543 = this->targ_
->got_section();
4544 // The address of _GLOBAL_OFFSET_TABLE_.
4545 Address g_o_t
= got
->address() + got
->g_o_t();
4547 // Write out pltresolve branch table.
4549 unsigned int the_end
= oview_size
- this->pltresolve_size
;
4550 unsigned char* end_p
= oview
+ the_end
;
4551 while (p
< end_p
- 8 * 4)
4552 write_insn
<big_endian
>(p
, b
+ end_p
- p
), p
+= 4;
4554 write_insn
<big_endian
>(p
, nop
), p
+= 4;
4556 // Write out pltresolve call stub.
4557 if (parameters
->options().output_is_position_independent())
4559 Address res0_off
= 0;
4560 Address after_bcl_off
= the_end
+ 12;
4561 Address bcl_res0
= after_bcl_off
- res0_off
;
4563 write_insn
<big_endian
>(p
+ 0, addis_11_11
+ ha(bcl_res0
));
4564 write_insn
<big_endian
>(p
+ 4, mflr_0
);
4565 write_insn
<big_endian
>(p
+ 8, bcl_20_31
);
4566 write_insn
<big_endian
>(p
+ 12, addi_11_11
+ l(bcl_res0
));
4567 write_insn
<big_endian
>(p
+ 16, mflr_12
);
4568 write_insn
<big_endian
>(p
+ 20, mtlr_0
);
4569 write_insn
<big_endian
>(p
+ 24, sub_11_11_12
);
4571 Address got_bcl
= g_o_t
+ 4 - (after_bcl_off
+ this->address());
4573 write_insn
<big_endian
>(p
+ 28, addis_12_12
+ ha(got_bcl
));
4574 if (ha(got_bcl
) == ha(got_bcl
+ 4))
4576 write_insn
<big_endian
>(p
+ 32, lwz_0_12
+ l(got_bcl
));
4577 write_insn
<big_endian
>(p
+ 36, lwz_12_12
+ l(got_bcl
+ 4));
4581 write_insn
<big_endian
>(p
+ 32, lwzu_0_12
+ l(got_bcl
));
4582 write_insn
<big_endian
>(p
+ 36, lwz_12_12
+ 4);
4584 write_insn
<big_endian
>(p
+ 40, mtctr_0
);
4585 write_insn
<big_endian
>(p
+ 44, add_0_11_11
);
4586 write_insn
<big_endian
>(p
+ 48, add_11_0_11
);
4587 write_insn
<big_endian
>(p
+ 52, bctr
);
4588 write_insn
<big_endian
>(p
+ 56, nop
);
4589 write_insn
<big_endian
>(p
+ 60, nop
);
4593 Address res0
= this->address();
4595 write_insn
<big_endian
>(p
+ 0, lis_12
+ ha(g_o_t
+ 4));
4596 write_insn
<big_endian
>(p
+ 4, addis_11_11
+ ha(-res0
));
4597 if (ha(g_o_t
+ 4) == ha(g_o_t
+ 8))
4598 write_insn
<big_endian
>(p
+ 8, lwz_0_12
+ l(g_o_t
+ 4));
4600 write_insn
<big_endian
>(p
+ 8, lwzu_0_12
+ l(g_o_t
+ 4));
4601 write_insn
<big_endian
>(p
+ 12, addi_11_11
+ l(-res0
));
4602 write_insn
<big_endian
>(p
+ 16, mtctr_0
);
4603 write_insn
<big_endian
>(p
+ 20, add_0_11_11
);
4604 if (ha(g_o_t
+ 4) == ha(g_o_t
+ 8))
4605 write_insn
<big_endian
>(p
+ 24, lwz_12_12
+ l(g_o_t
+ 8));
4607 write_insn
<big_endian
>(p
+ 24, lwz_12_12
+ 4);
4608 write_insn
<big_endian
>(p
+ 28, add_11_0_11
);
4609 write_insn
<big_endian
>(p
+ 32, bctr
);
4610 write_insn
<big_endian
>(p
+ 36, nop
);
4611 write_insn
<big_endian
>(p
+ 40, nop
);
4612 write_insn
<big_endian
>(p
+ 44, nop
);
4613 write_insn
<big_endian
>(p
+ 48, nop
);
4614 write_insn
<big_endian
>(p
+ 52, nop
);
4615 write_insn
<big_endian
>(p
+ 56, nop
);
4616 write_insn
<big_endian
>(p
+ 60, nop
);
4621 of
->write_output_view(off
, oview_size
, oview
);
4625 // A class to handle linker generated save/restore functions.
4627 template<int size
, bool big_endian
>
4628 class Output_data_save_res
: public Output_section_data_build
4631 Output_data_save_res(Symbol_table
* symtab
);
4634 // Write to a map file.
4636 do_print_to_mapfile(Mapfile
* mapfile
) const
4637 { mapfile
->print_output_data(this, _("** save/restore")); }
4640 do_write(Output_file
*);
4643 // The maximum size of save/restore contents.
4644 static const unsigned int savres_max
= 218*4;
4647 savres_define(Symbol_table
* symtab
,
4649 unsigned int lo
, unsigned int hi
,
4650 unsigned char* write_ent(unsigned char*, int),
4651 unsigned char* write_tail(unsigned char*, int));
4653 unsigned char *contents_
;
4656 template<bool big_endian
>
4657 static unsigned char*
4658 savegpr0(unsigned char* p
, int r
)
4660 uint32_t insn
= std_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4661 write_insn
<big_endian
>(p
, insn
);
4665 template<bool big_endian
>
4666 static unsigned char*
4667 savegpr0_tail(unsigned char* p
, int r
)
4669 p
= savegpr0
<big_endian
>(p
, r
);
4670 uint32_t insn
= std_0_1
+ 16;
4671 write_insn
<big_endian
>(p
, insn
);
4673 write_insn
<big_endian
>(p
, blr
);
4677 template<bool big_endian
>
4678 static unsigned char*
4679 restgpr0(unsigned char* p
, int r
)
4681 uint32_t insn
= ld_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4682 write_insn
<big_endian
>(p
, insn
);
4686 template<bool big_endian
>
4687 static unsigned char*
4688 restgpr0_tail(unsigned char* p
, int r
)
4690 uint32_t insn
= ld_0_1
+ 16;
4691 write_insn
<big_endian
>(p
, insn
);
4693 p
= restgpr0
<big_endian
>(p
, r
);
4694 write_insn
<big_endian
>(p
, mtlr_0
);
4698 p
= restgpr0
<big_endian
>(p
, 30);
4699 p
= restgpr0
<big_endian
>(p
, 31);
4701 write_insn
<big_endian
>(p
, blr
);
4705 template<bool big_endian
>
4706 static unsigned char*
4707 savegpr1(unsigned char* p
, int r
)
4709 uint32_t insn
= std_0_12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4710 write_insn
<big_endian
>(p
, insn
);
4714 template<bool big_endian
>
4715 static unsigned char*
4716 savegpr1_tail(unsigned char* p
, int r
)
4718 p
= savegpr1
<big_endian
>(p
, r
);
4719 write_insn
<big_endian
>(p
, blr
);
4723 template<bool big_endian
>
4724 static unsigned char*
4725 restgpr1(unsigned char* p
, int r
)
4727 uint32_t insn
= ld_0_12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4728 write_insn
<big_endian
>(p
, insn
);
4732 template<bool big_endian
>
4733 static unsigned char*
4734 restgpr1_tail(unsigned char* p
, int r
)
4736 p
= restgpr1
<big_endian
>(p
, r
);
4737 write_insn
<big_endian
>(p
, blr
);
4741 template<bool big_endian
>
4742 static unsigned char*
4743 savefpr(unsigned char* p
, int r
)
4745 uint32_t insn
= stfd_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4746 write_insn
<big_endian
>(p
, insn
);
4750 template<bool big_endian
>
4751 static unsigned char*
4752 savefpr0_tail(unsigned char* p
, int r
)
4754 p
= savefpr
<big_endian
>(p
, r
);
4755 write_insn
<big_endian
>(p
, std_0_1
+ 16);
4757 write_insn
<big_endian
>(p
, blr
);
4761 template<bool big_endian
>
4762 static unsigned char*
4763 restfpr(unsigned char* p
, int r
)
4765 uint32_t insn
= lfd_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4766 write_insn
<big_endian
>(p
, insn
);
4770 template<bool big_endian
>
4771 static unsigned char*
4772 restfpr0_tail(unsigned char* p
, int r
)
4774 write_insn
<big_endian
>(p
, ld_0_1
+ 16);
4776 p
= restfpr
<big_endian
>(p
, r
);
4777 write_insn
<big_endian
>(p
, mtlr_0
);
4781 p
= restfpr
<big_endian
>(p
, 30);
4782 p
= restfpr
<big_endian
>(p
, 31);
4784 write_insn
<big_endian
>(p
, blr
);
4788 template<bool big_endian
>
4789 static unsigned char*
4790 savefpr1_tail(unsigned char* p
, int r
)
4792 p
= savefpr
<big_endian
>(p
, r
);
4793 write_insn
<big_endian
>(p
, blr
);
4797 template<bool big_endian
>
4798 static unsigned char*
4799 restfpr1_tail(unsigned char* p
, int r
)
4801 p
= restfpr
<big_endian
>(p
, r
);
4802 write_insn
<big_endian
>(p
, blr
);
4806 template<bool big_endian
>
4807 static unsigned char*
4808 savevr(unsigned char* p
, int r
)
4810 uint32_t insn
= li_12_0
+ (1 << 16) - (32 - r
) * 16;
4811 write_insn
<big_endian
>(p
, insn
);
4813 insn
= stvx_0_12_0
+ (r
<< 21);
4814 write_insn
<big_endian
>(p
, insn
);
4818 template<bool big_endian
>
4819 static unsigned char*
4820 savevr_tail(unsigned char* p
, int r
)
4822 p
= savevr
<big_endian
>(p
, r
);
4823 write_insn
<big_endian
>(p
, blr
);
4827 template<bool big_endian
>
4828 static unsigned char*
4829 restvr(unsigned char* p
, int r
)
4831 uint32_t insn
= li_12_0
+ (1 << 16) - (32 - r
) * 16;
4832 write_insn
<big_endian
>(p
, insn
);
4834 insn
= lvx_0_12_0
+ (r
<< 21);
4835 write_insn
<big_endian
>(p
, insn
);
4839 template<bool big_endian
>
4840 static unsigned char*
4841 restvr_tail(unsigned char* p
, int r
)
4843 p
= restvr
<big_endian
>(p
, r
);
4844 write_insn
<big_endian
>(p
, blr
);
4849 template<int size
, bool big_endian
>
4850 Output_data_save_res
<size
, big_endian
>::Output_data_save_res(
4851 Symbol_table
* symtab
)
4852 : Output_section_data_build(4),
4855 this->savres_define(symtab
,
4856 "_savegpr0_", 14, 31,
4857 savegpr0
<big_endian
>, savegpr0_tail
<big_endian
>);
4858 this->savres_define(symtab
,
4859 "_restgpr0_", 14, 29,
4860 restgpr0
<big_endian
>, restgpr0_tail
<big_endian
>);
4861 this->savres_define(symtab
,
4862 "_restgpr0_", 30, 31,
4863 restgpr0
<big_endian
>, restgpr0_tail
<big_endian
>);
4864 this->savres_define(symtab
,
4865 "_savegpr1_", 14, 31,
4866 savegpr1
<big_endian
>, savegpr1_tail
<big_endian
>);
4867 this->savres_define(symtab
,
4868 "_restgpr1_", 14, 31,
4869 restgpr1
<big_endian
>, restgpr1_tail
<big_endian
>);
4870 this->savres_define(symtab
,
4871 "_savefpr_", 14, 31,
4872 savefpr
<big_endian
>, savefpr0_tail
<big_endian
>);
4873 this->savres_define(symtab
,
4874 "_restfpr_", 14, 29,
4875 restfpr
<big_endian
>, restfpr0_tail
<big_endian
>);
4876 this->savres_define(symtab
,
4877 "_restfpr_", 30, 31,
4878 restfpr
<big_endian
>, restfpr0_tail
<big_endian
>);
4879 this->savres_define(symtab
,
4881 savefpr
<big_endian
>, savefpr1_tail
<big_endian
>);
4882 this->savres_define(symtab
,
4884 restfpr
<big_endian
>, restfpr1_tail
<big_endian
>);
4885 this->savres_define(symtab
,
4887 savevr
<big_endian
>, savevr_tail
<big_endian
>);
4888 this->savres_define(symtab
,
4890 restvr
<big_endian
>, restvr_tail
<big_endian
>);
4893 template<int size
, bool big_endian
>
4895 Output_data_save_res
<size
, big_endian
>::savres_define(
4896 Symbol_table
* symtab
,
4898 unsigned int lo
, unsigned int hi
,
4899 unsigned char* write_ent(unsigned char*, int),
4900 unsigned char* write_tail(unsigned char*, int))
4902 size_t len
= strlen(name
);
4903 bool writing
= false;
4906 memcpy(sym
, name
, len
);
4909 for (unsigned int i
= lo
; i
<= hi
; i
++)
4911 sym
[len
+ 0] = i
/ 10 + '0';
4912 sym
[len
+ 1] = i
% 10 + '0';
4913 Symbol
* gsym
= symtab
->lookup(sym
);
4914 bool refd
= gsym
!= NULL
&& gsym
->is_undefined();
4915 writing
= writing
|| refd
;
4918 if (this->contents_
== NULL
)
4919 this->contents_
= new unsigned char[this->savres_max
];
4921 section_size_type value
= this->current_data_size();
4922 unsigned char* p
= this->contents_
+ value
;
4924 p
= write_ent(p
, i
);
4926 p
= write_tail(p
, i
);
4927 section_size_type cur_size
= p
- this->contents_
;
4928 this->set_current_data_size(cur_size
);
4930 symtab
->define_in_output_data(sym
, NULL
, Symbol_table::PREDEFINED
,
4931 this, value
, cur_size
- value
,
4932 elfcpp::STT_FUNC
, elfcpp::STB_GLOBAL
,
4933 elfcpp::STV_HIDDEN
, 0, false, false);
4938 // Write out save/restore.
4940 template<int size
, bool big_endian
>
4942 Output_data_save_res
<size
, big_endian
>::do_write(Output_file
* of
)
4944 const section_size_type off
= this->offset();
4945 const section_size_type oview_size
=
4946 convert_to_section_size_type(this->data_size());
4947 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
4948 memcpy(oview
, this->contents_
, oview_size
);
4949 of
->write_output_view(off
, oview_size
, oview
);
4953 // Create the glink section.
4955 template<int size
, bool big_endian
>
4957 Target_powerpc
<size
, big_endian
>::make_glink_section(Layout
* layout
)
4959 if (this->glink_
== NULL
)
4961 this->glink_
= new Output_data_glink
<size
, big_endian
>(this);
4962 this->glink_
->add_eh_frame(layout
);
4963 layout
->add_output_section_data(".text", elfcpp::SHT_PROGBITS
,
4964 elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
,
4965 this->glink_
, ORDER_TEXT
, false);
4969 // Create a PLT entry for a global symbol.
4971 template<int size
, bool big_endian
>
4973 Target_powerpc
<size
, big_endian
>::make_plt_entry(Symbol_table
* symtab
,
4977 if (gsym
->type() == elfcpp::STT_GNU_IFUNC
4978 && gsym
->can_use_relative_reloc(false))
4980 if (this->iplt_
== NULL
)
4981 this->make_iplt_section(symtab
, layout
);
4982 this->iplt_
->add_ifunc_entry(gsym
);
4986 if (this->plt_
== NULL
)
4987 this->make_plt_section(symtab
, layout
);
4988 this->plt_
->add_entry(gsym
);
4992 // Make a PLT entry for a local STT_GNU_IFUNC symbol.
4994 template<int size
, bool big_endian
>
4996 Target_powerpc
<size
, big_endian
>::make_local_ifunc_plt_entry(
4997 Symbol_table
* symtab
,
4999 Sized_relobj_file
<size
, big_endian
>* relobj
,
5002 if (this->iplt_
== NULL
)
5003 this->make_iplt_section(symtab
, layout
);
5004 this->iplt_
->add_local_ifunc_entry(relobj
, r_sym
);
5007 // Return the number of entries in the PLT.
5009 template<int size
, bool big_endian
>
5011 Target_powerpc
<size
, big_endian
>::plt_entry_count() const
5013 if (this->plt_
== NULL
)
5015 return this->plt_
->entry_count();
5018 // Create a GOT entry for local dynamic __tls_get_addr calls.
5020 template<int size
, bool big_endian
>
5022 Target_powerpc
<size
, big_endian
>::tlsld_got_offset(
5023 Symbol_table
* symtab
,
5025 Sized_relobj_file
<size
, big_endian
>* object
)
5027 if (this->tlsld_got_offset_
== -1U)
5029 gold_assert(symtab
!= NULL
&& layout
!= NULL
&& object
!= NULL
);
5030 Reloc_section
* rela_dyn
= this->rela_dyn_section(layout
);
5031 Output_data_got_powerpc
<size
, big_endian
>* got
5032 = this->got_section(symtab
, layout
);
5033 unsigned int got_offset
= got
->add_constant_pair(0, 0);
5034 rela_dyn
->add_local(object
, 0, elfcpp::R_POWERPC_DTPMOD
, got
,
5036 this->tlsld_got_offset_
= got_offset
;
5038 return this->tlsld_got_offset_
;
5041 // Get the Reference_flags for a particular relocation.
5043 template<int size
, bool big_endian
>
5045 Target_powerpc
<size
, big_endian
>::Scan::get_reference_flags(
5046 unsigned int r_type
,
5047 const Target_powerpc
* target
)
5053 case elfcpp::R_POWERPC_NONE
:
5054 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
5055 case elfcpp::R_POWERPC_GNU_VTENTRY
:
5056 case elfcpp::R_PPC64_TOC
:
5057 // No symbol reference.
5060 case elfcpp::R_PPC64_ADDR64
:
5061 case elfcpp::R_PPC64_UADDR64
:
5062 case elfcpp::R_POWERPC_ADDR32
:
5063 case elfcpp::R_POWERPC_UADDR32
:
5064 case elfcpp::R_POWERPC_ADDR16
:
5065 case elfcpp::R_POWERPC_UADDR16
:
5066 case elfcpp::R_POWERPC_ADDR16_LO
:
5067 case elfcpp::R_POWERPC_ADDR16_HI
:
5068 case elfcpp::R_POWERPC_ADDR16_HA
:
5069 ref
= Symbol::ABSOLUTE_REF
;
5072 case elfcpp::R_POWERPC_ADDR24
:
5073 case elfcpp::R_POWERPC_ADDR14
:
5074 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
5075 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
5076 ref
= Symbol::FUNCTION_CALL
| Symbol::ABSOLUTE_REF
;
5079 case elfcpp::R_PPC64_REL64
:
5080 case elfcpp::R_POWERPC_REL32
:
5081 case elfcpp::R_PPC_LOCAL24PC
:
5082 case elfcpp::R_POWERPC_REL16
:
5083 case elfcpp::R_POWERPC_REL16_LO
:
5084 case elfcpp::R_POWERPC_REL16_HI
:
5085 case elfcpp::R_POWERPC_REL16_HA
:
5086 ref
= Symbol::RELATIVE_REF
;
5089 case elfcpp::R_POWERPC_REL24
:
5090 case elfcpp::R_PPC_PLTREL24
:
5091 case elfcpp::R_POWERPC_REL14
:
5092 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
5093 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
5094 ref
= Symbol::FUNCTION_CALL
| Symbol::RELATIVE_REF
;
5097 case elfcpp::R_POWERPC_GOT16
:
5098 case elfcpp::R_POWERPC_GOT16_LO
:
5099 case elfcpp::R_POWERPC_GOT16_HI
:
5100 case elfcpp::R_POWERPC_GOT16_HA
:
5101 case elfcpp::R_PPC64_GOT16_DS
:
5102 case elfcpp::R_PPC64_GOT16_LO_DS
:
5103 case elfcpp::R_PPC64_TOC16
:
5104 case elfcpp::R_PPC64_TOC16_LO
:
5105 case elfcpp::R_PPC64_TOC16_HI
:
5106 case elfcpp::R_PPC64_TOC16_HA
:
5107 case elfcpp::R_PPC64_TOC16_DS
:
5108 case elfcpp::R_PPC64_TOC16_LO_DS
:
5110 ref
= Symbol::ABSOLUTE_REF
;
5113 case elfcpp::R_POWERPC_GOT_TPREL16
:
5114 case elfcpp::R_POWERPC_TLS
:
5115 ref
= Symbol::TLS_REF
;
5118 case elfcpp::R_POWERPC_COPY
:
5119 case elfcpp::R_POWERPC_GLOB_DAT
:
5120 case elfcpp::R_POWERPC_JMP_SLOT
:
5121 case elfcpp::R_POWERPC_RELATIVE
:
5122 case elfcpp::R_POWERPC_DTPMOD
:
5124 // Not expected. We will give an error later.
5128 if (size
== 64 && target
->abiversion() < 2)
5129 ref
|= Symbol::FUNC_DESC_ABI
;
5133 // Report an unsupported relocation against a local symbol.
5135 template<int size
, bool big_endian
>
5137 Target_powerpc
<size
, big_endian
>::Scan::unsupported_reloc_local(
5138 Sized_relobj_file
<size
, big_endian
>* object
,
5139 unsigned int r_type
)
5141 gold_error(_("%s: unsupported reloc %u against local symbol"),
5142 object
->name().c_str(), r_type
);
5145 // We are about to emit a dynamic relocation of type R_TYPE. If the
5146 // dynamic linker does not support it, issue an error.
5148 template<int size
, bool big_endian
>
5150 Target_powerpc
<size
, big_endian
>::Scan::check_non_pic(Relobj
* object
,
5151 unsigned int r_type
)
5153 gold_assert(r_type
!= elfcpp::R_POWERPC_NONE
);
5155 // These are the relocation types supported by glibc for both 32-bit
5156 // and 64-bit powerpc.
5159 case elfcpp::R_POWERPC_NONE
:
5160 case elfcpp::R_POWERPC_RELATIVE
:
5161 case elfcpp::R_POWERPC_GLOB_DAT
:
5162 case elfcpp::R_POWERPC_DTPMOD
:
5163 case elfcpp::R_POWERPC_DTPREL
:
5164 case elfcpp::R_POWERPC_TPREL
:
5165 case elfcpp::R_POWERPC_JMP_SLOT
:
5166 case elfcpp::R_POWERPC_COPY
:
5167 case elfcpp::R_POWERPC_IRELATIVE
:
5168 case elfcpp::R_POWERPC_ADDR32
:
5169 case elfcpp::R_POWERPC_UADDR32
:
5170 case elfcpp::R_POWERPC_ADDR24
:
5171 case elfcpp::R_POWERPC_ADDR16
:
5172 case elfcpp::R_POWERPC_UADDR16
:
5173 case elfcpp::R_POWERPC_ADDR16_LO
:
5174 case elfcpp::R_POWERPC_ADDR16_HI
:
5175 case elfcpp::R_POWERPC_ADDR16_HA
:
5176 case elfcpp::R_POWERPC_ADDR14
:
5177 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
5178 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
5179 case elfcpp::R_POWERPC_REL32
:
5180 case elfcpp::R_POWERPC_REL24
:
5181 case elfcpp::R_POWERPC_TPREL16
:
5182 case elfcpp::R_POWERPC_TPREL16_LO
:
5183 case elfcpp::R_POWERPC_TPREL16_HI
:
5184 case elfcpp::R_POWERPC_TPREL16_HA
:
5195 // These are the relocation types supported only on 64-bit.
5196 case elfcpp::R_PPC64_ADDR64
:
5197 case elfcpp::R_PPC64_UADDR64
:
5198 case elfcpp::R_PPC64_JMP_IREL
:
5199 case elfcpp::R_PPC64_ADDR16_DS
:
5200 case elfcpp::R_PPC64_ADDR16_LO_DS
:
5201 case elfcpp::R_PPC64_ADDR16_HIGH
:
5202 case elfcpp::R_PPC64_ADDR16_HIGHA
:
5203 case elfcpp::R_PPC64_ADDR16_HIGHER
:
5204 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
5205 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
5206 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
5207 case elfcpp::R_PPC64_REL64
:
5208 case elfcpp::R_POWERPC_ADDR30
:
5209 case elfcpp::R_PPC64_TPREL16_DS
:
5210 case elfcpp::R_PPC64_TPREL16_LO_DS
:
5211 case elfcpp::R_PPC64_TPREL16_HIGH
:
5212 case elfcpp::R_PPC64_TPREL16_HIGHA
:
5213 case elfcpp::R_PPC64_TPREL16_HIGHER
:
5214 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
5215 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
5216 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
5227 // These are the relocation types supported only on 32-bit.
5228 // ??? glibc ld.so doesn't need to support these.
5229 case elfcpp::R_POWERPC_DTPREL16
:
5230 case elfcpp::R_POWERPC_DTPREL16_LO
:
5231 case elfcpp::R_POWERPC_DTPREL16_HI
:
5232 case elfcpp::R_POWERPC_DTPREL16_HA
:
5240 // This prevents us from issuing more than one error per reloc
5241 // section. But we can still wind up issuing more than one
5242 // error per object file.
5243 if (this->issued_non_pic_error_
)
5245 gold_assert(parameters
->options().output_is_position_independent());
5246 object
->error(_("requires unsupported dynamic reloc; "
5247 "recompile with -fPIC"));
5248 this->issued_non_pic_error_
= true;
5252 // Return whether we need to make a PLT entry for a relocation of the
5253 // given type against a STT_GNU_IFUNC symbol.
5255 template<int size
, bool big_endian
>
5257 Target_powerpc
<size
, big_endian
>::Scan::reloc_needs_plt_for_ifunc(
5258 Target_powerpc
<size
, big_endian
>* target
,
5259 Sized_relobj_file
<size
, big_endian
>* object
,
5260 unsigned int r_type
,
5263 // In non-pic code any reference will resolve to the plt call stub
5264 // for the ifunc symbol.
5265 if ((size
== 32 || target
->abiversion() >= 2)
5266 && !parameters
->options().output_is_position_independent())
5271 // Word size refs from data sections are OK, but don't need a PLT entry.
5272 case elfcpp::R_POWERPC_ADDR32
:
5273 case elfcpp::R_POWERPC_UADDR32
:
5278 case elfcpp::R_PPC64_ADDR64
:
5279 case elfcpp::R_PPC64_UADDR64
:
5284 // GOT refs are good, but also don't need a PLT entry.
5285 case elfcpp::R_POWERPC_GOT16
:
5286 case elfcpp::R_POWERPC_GOT16_LO
:
5287 case elfcpp::R_POWERPC_GOT16_HI
:
5288 case elfcpp::R_POWERPC_GOT16_HA
:
5289 case elfcpp::R_PPC64_GOT16_DS
:
5290 case elfcpp::R_PPC64_GOT16_LO_DS
:
5293 // Function calls are good, and these do need a PLT entry.
5294 case elfcpp::R_POWERPC_ADDR24
:
5295 case elfcpp::R_POWERPC_ADDR14
:
5296 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
5297 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
5298 case elfcpp::R_POWERPC_REL24
:
5299 case elfcpp::R_PPC_PLTREL24
:
5300 case elfcpp::R_POWERPC_REL14
:
5301 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
5302 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
5309 // Anything else is a problem.
5310 // If we are building a static executable, the libc startup function
5311 // responsible for applying indirect function relocations is going
5312 // to complain about the reloc type.
5313 // If we are building a dynamic executable, we will have a text
5314 // relocation. The dynamic loader will set the text segment
5315 // writable and non-executable to apply text relocations. So we'll
5316 // segfault when trying to run the indirection function to resolve
5319 gold_error(_("%s: unsupported reloc %u for IFUNC symbol"),
5320 object
->name().c_str(), r_type
);
5324 // Scan a relocation for a local symbol.
5326 template<int size
, bool big_endian
>
5328 Target_powerpc
<size
, big_endian
>::Scan::local(
5329 Symbol_table
* symtab
,
5331 Target_powerpc
<size
, big_endian
>* target
,
5332 Sized_relobj_file
<size
, big_endian
>* object
,
5333 unsigned int data_shndx
,
5334 Output_section
* output_section
,
5335 const elfcpp::Rela
<size
, big_endian
>& reloc
,
5336 unsigned int r_type
,
5337 const elfcpp::Sym
<size
, big_endian
>& lsym
,
5340 this->maybe_skip_tls_get_addr_call(r_type
, NULL
);
5342 if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
5343 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
5345 this->expect_tls_get_addr_call();
5346 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(true);
5347 if (tls_type
!= tls::TLSOPT_NONE
)
5348 this->skip_next_tls_get_addr_call();
5350 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
5351 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
5353 this->expect_tls_get_addr_call();
5354 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
5355 if (tls_type
!= tls::TLSOPT_NONE
)
5356 this->skip_next_tls_get_addr_call();
5359 Powerpc_relobj
<size
, big_endian
>* ppc_object
5360 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
5365 && data_shndx
== ppc_object
->opd_shndx()
5366 && r_type
== elfcpp::R_PPC64_ADDR64
)
5367 ppc_object
->set_opd_discard(reloc
.get_r_offset());
5371 // A local STT_GNU_IFUNC symbol may require a PLT entry.
5372 bool is_ifunc
= lsym
.get_st_type() == elfcpp::STT_GNU_IFUNC
;
5373 if (is_ifunc
&& this->reloc_needs_plt_for_ifunc(target
, object
, r_type
, true))
5375 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5376 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
5377 r_type
, r_sym
, reloc
.get_r_addend());
5378 target
->make_local_ifunc_plt_entry(symtab
, layout
, object
, r_sym
);
5383 case elfcpp::R_POWERPC_NONE
:
5384 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
5385 case elfcpp::R_POWERPC_GNU_VTENTRY
:
5386 case elfcpp::R_PPC64_TOCSAVE
:
5387 case elfcpp::R_POWERPC_TLS
:
5390 case elfcpp::R_PPC64_TOC
:
5392 Output_data_got_powerpc
<size
, big_endian
>* got
5393 = target
->got_section(symtab
, layout
);
5394 if (parameters
->options().output_is_position_independent())
5396 Address off
= reloc
.get_r_offset();
5398 && target
->abiversion() < 2
5399 && data_shndx
== ppc_object
->opd_shndx()
5400 && ppc_object
->get_opd_discard(off
- 8))
5403 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5404 Powerpc_relobj
<size
, big_endian
>* symobj
= ppc_object
;
5405 rela_dyn
->add_output_section_relative(got
->output_section(),
5406 elfcpp::R_POWERPC_RELATIVE
,
5408 object
, data_shndx
, off
,
5409 symobj
->toc_base_offset());
5414 case elfcpp::R_PPC64_ADDR64
:
5415 case elfcpp::R_PPC64_UADDR64
:
5416 case elfcpp::R_POWERPC_ADDR32
:
5417 case elfcpp::R_POWERPC_UADDR32
:
5418 case elfcpp::R_POWERPC_ADDR24
:
5419 case elfcpp::R_POWERPC_ADDR16
:
5420 case elfcpp::R_POWERPC_ADDR16_LO
:
5421 case elfcpp::R_POWERPC_ADDR16_HI
:
5422 case elfcpp::R_POWERPC_ADDR16_HA
:
5423 case elfcpp::R_POWERPC_UADDR16
:
5424 case elfcpp::R_PPC64_ADDR16_HIGH
:
5425 case elfcpp::R_PPC64_ADDR16_HIGHA
:
5426 case elfcpp::R_PPC64_ADDR16_HIGHER
:
5427 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
5428 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
5429 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
5430 case elfcpp::R_PPC64_ADDR16_DS
:
5431 case elfcpp::R_PPC64_ADDR16_LO_DS
:
5432 case elfcpp::R_POWERPC_ADDR14
:
5433 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
5434 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
5435 // If building a shared library (or a position-independent
5436 // executable), we need to create a dynamic relocation for
5438 if (parameters
->options().output_is_position_independent()
5439 || (size
== 64 && is_ifunc
&& target
->abiversion() < 2))
5441 Reloc_section
* rela_dyn
= target
->rela_dyn_section(symtab
, layout
,
5443 if ((size
== 32 && r_type
== elfcpp::R_POWERPC_ADDR32
)
5444 || (size
== 64 && r_type
== elfcpp::R_PPC64_ADDR64
))
5446 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5447 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
5448 : elfcpp::R_POWERPC_RELATIVE
);
5449 rela_dyn
->add_local_relative(object
, r_sym
, dynrel
,
5450 output_section
, data_shndx
,
5451 reloc
.get_r_offset(),
5452 reloc
.get_r_addend(), false);
5456 check_non_pic(object
, r_type
);
5457 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5458 rela_dyn
->add_local(object
, r_sym
, r_type
, output_section
,
5459 data_shndx
, reloc
.get_r_offset(),
5460 reloc
.get_r_addend());
5465 case elfcpp::R_POWERPC_REL24
:
5466 case elfcpp::R_PPC_PLTREL24
:
5467 case elfcpp::R_PPC_LOCAL24PC
:
5468 case elfcpp::R_POWERPC_REL14
:
5469 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
5470 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
5472 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
5473 r_type
, elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
5474 reloc
.get_r_addend());
5477 case elfcpp::R_PPC64_REL64
:
5478 case elfcpp::R_POWERPC_REL32
:
5479 case elfcpp::R_POWERPC_REL16
:
5480 case elfcpp::R_POWERPC_REL16_LO
:
5481 case elfcpp::R_POWERPC_REL16_HI
:
5482 case elfcpp::R_POWERPC_REL16_HA
:
5483 case elfcpp::R_POWERPC_SECTOFF
:
5484 case elfcpp::R_POWERPC_SECTOFF_LO
:
5485 case elfcpp::R_POWERPC_SECTOFF_HI
:
5486 case elfcpp::R_POWERPC_SECTOFF_HA
:
5487 case elfcpp::R_PPC64_SECTOFF_DS
:
5488 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
5489 case elfcpp::R_POWERPC_TPREL16
:
5490 case elfcpp::R_POWERPC_TPREL16_LO
:
5491 case elfcpp::R_POWERPC_TPREL16_HI
:
5492 case elfcpp::R_POWERPC_TPREL16_HA
:
5493 case elfcpp::R_PPC64_TPREL16_DS
:
5494 case elfcpp::R_PPC64_TPREL16_LO_DS
:
5495 case elfcpp::R_PPC64_TPREL16_HIGH
:
5496 case elfcpp::R_PPC64_TPREL16_HIGHA
:
5497 case elfcpp::R_PPC64_TPREL16_HIGHER
:
5498 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
5499 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
5500 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
5501 case elfcpp::R_POWERPC_DTPREL16
:
5502 case elfcpp::R_POWERPC_DTPREL16_LO
:
5503 case elfcpp::R_POWERPC_DTPREL16_HI
:
5504 case elfcpp::R_POWERPC_DTPREL16_HA
:
5505 case elfcpp::R_PPC64_DTPREL16_DS
:
5506 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
5507 case elfcpp::R_PPC64_DTPREL16_HIGH
:
5508 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
5509 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
5510 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
5511 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
5512 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
5513 case elfcpp::R_PPC64_TLSGD
:
5514 case elfcpp::R_PPC64_TLSLD
:
5515 case elfcpp::R_PPC64_ADDR64_LOCAL
:
5518 case elfcpp::R_POWERPC_GOT16
:
5519 case elfcpp::R_POWERPC_GOT16_LO
:
5520 case elfcpp::R_POWERPC_GOT16_HI
:
5521 case elfcpp::R_POWERPC_GOT16_HA
:
5522 case elfcpp::R_PPC64_GOT16_DS
:
5523 case elfcpp::R_PPC64_GOT16_LO_DS
:
5525 // The symbol requires a GOT entry.
5526 Output_data_got_powerpc
<size
, big_endian
>* got
5527 = target
->got_section(symtab
, layout
);
5528 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5530 if (!parameters
->options().output_is_position_independent())
5532 if ((size
== 32 && is_ifunc
)
5533 || (size
== 64 && target
->abiversion() >= 2))
5534 got
->add_local_plt(object
, r_sym
, GOT_TYPE_STANDARD
);
5536 got
->add_local(object
, r_sym
, GOT_TYPE_STANDARD
);
5538 else if (!object
->local_has_got_offset(r_sym
, GOT_TYPE_STANDARD
))
5540 // If we are generating a shared object or a pie, this
5541 // symbol's GOT entry will be set by a dynamic relocation.
5543 off
= got
->add_constant(0);
5544 object
->set_local_got_offset(r_sym
, GOT_TYPE_STANDARD
, off
);
5546 Reloc_section
* rela_dyn
= target
->rela_dyn_section(symtab
, layout
,
5548 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
5549 : elfcpp::R_POWERPC_RELATIVE
);
5550 rela_dyn
->add_local_relative(object
, r_sym
, dynrel
,
5551 got
, off
, 0, false);
5556 case elfcpp::R_PPC64_TOC16
:
5557 case elfcpp::R_PPC64_TOC16_LO
:
5558 case elfcpp::R_PPC64_TOC16_HI
:
5559 case elfcpp::R_PPC64_TOC16_HA
:
5560 case elfcpp::R_PPC64_TOC16_DS
:
5561 case elfcpp::R_PPC64_TOC16_LO_DS
:
5562 // We need a GOT section.
5563 target
->got_section(symtab
, layout
);
5566 case elfcpp::R_POWERPC_GOT_TLSGD16
:
5567 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
5568 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
5569 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
5571 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(true);
5572 if (tls_type
== tls::TLSOPT_NONE
)
5574 Output_data_got_powerpc
<size
, big_endian
>* got
5575 = target
->got_section(symtab
, layout
);
5576 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5577 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5578 got
->add_local_tls_pair(object
, r_sym
, GOT_TYPE_TLSGD
,
5579 rela_dyn
, elfcpp::R_POWERPC_DTPMOD
);
5581 else if (tls_type
== tls::TLSOPT_TO_LE
)
5583 // no GOT relocs needed for Local Exec.
5590 case elfcpp::R_POWERPC_GOT_TLSLD16
:
5591 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
5592 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
5593 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
5595 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
5596 if (tls_type
== tls::TLSOPT_NONE
)
5597 target
->tlsld_got_offset(symtab
, layout
, object
);
5598 else if (tls_type
== tls::TLSOPT_TO_LE
)
5600 // no GOT relocs needed for Local Exec.
5601 if (parameters
->options().emit_relocs())
5603 Output_section
* os
= layout
->tls_segment()->first_section();
5604 gold_assert(os
!= NULL
);
5605 os
->set_needs_symtab_index();
5613 case elfcpp::R_POWERPC_GOT_DTPREL16
:
5614 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
5615 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
5616 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
5618 Output_data_got_powerpc
<size
, big_endian
>* got
5619 = target
->got_section(symtab
, layout
);
5620 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5621 got
->add_local_tls(object
, r_sym
, GOT_TYPE_DTPREL
);
5625 case elfcpp::R_POWERPC_GOT_TPREL16
:
5626 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
5627 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
5628 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
5630 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(true);
5631 if (tls_type
== tls::TLSOPT_NONE
)
5633 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5634 if (!object
->local_has_got_offset(r_sym
, GOT_TYPE_TPREL
))
5636 Output_data_got_powerpc
<size
, big_endian
>* got
5637 = target
->got_section(symtab
, layout
);
5638 unsigned int off
= got
->add_constant(0);
5639 object
->set_local_got_offset(r_sym
, GOT_TYPE_TPREL
, off
);
5641 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5642 rela_dyn
->add_symbolless_local_addend(object
, r_sym
,
5643 elfcpp::R_POWERPC_TPREL
,
5647 else if (tls_type
== tls::TLSOPT_TO_LE
)
5649 // no GOT relocs needed for Local Exec.
5657 unsupported_reloc_local(object
, r_type
);
5663 case elfcpp::R_POWERPC_GOT_TLSLD16
:
5664 case elfcpp::R_POWERPC_GOT_TLSGD16
:
5665 case elfcpp::R_POWERPC_GOT_TPREL16
:
5666 case elfcpp::R_POWERPC_GOT_DTPREL16
:
5667 case elfcpp::R_POWERPC_GOT16
:
5668 case elfcpp::R_PPC64_GOT16_DS
:
5669 case elfcpp::R_PPC64_TOC16
:
5670 case elfcpp::R_PPC64_TOC16_DS
:
5671 ppc_object
->set_has_small_toc_reloc();
5677 // Report an unsupported relocation against a global symbol.
5679 template<int size
, bool big_endian
>
5681 Target_powerpc
<size
, big_endian
>::Scan::unsupported_reloc_global(
5682 Sized_relobj_file
<size
, big_endian
>* object
,
5683 unsigned int r_type
,
5686 gold_error(_("%s: unsupported reloc %u against global symbol %s"),
5687 object
->name().c_str(), r_type
, gsym
->demangled_name().c_str());
5690 // Scan a relocation for a global symbol.
5692 template<int size
, bool big_endian
>
5694 Target_powerpc
<size
, big_endian
>::Scan::global(
5695 Symbol_table
* symtab
,
5697 Target_powerpc
<size
, big_endian
>* target
,
5698 Sized_relobj_file
<size
, big_endian
>* object
,
5699 unsigned int data_shndx
,
5700 Output_section
* output_section
,
5701 const elfcpp::Rela
<size
, big_endian
>& reloc
,
5702 unsigned int r_type
,
5705 if (this->maybe_skip_tls_get_addr_call(r_type
, gsym
) == Track_tls::SKIP
)
5708 if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
5709 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
5711 this->expect_tls_get_addr_call();
5712 const bool final
= gsym
->final_value_is_known();
5713 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
5714 if (tls_type
!= tls::TLSOPT_NONE
)
5715 this->skip_next_tls_get_addr_call();
5717 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
5718 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
5720 this->expect_tls_get_addr_call();
5721 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
5722 if (tls_type
!= tls::TLSOPT_NONE
)
5723 this->skip_next_tls_get_addr_call();
5726 Powerpc_relobj
<size
, big_endian
>* ppc_object
5727 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
5729 // A STT_GNU_IFUNC symbol may require a PLT entry.
5730 bool is_ifunc
= gsym
->type() == elfcpp::STT_GNU_IFUNC
;
5731 bool pushed_ifunc
= false;
5732 if (is_ifunc
&& this->reloc_needs_plt_for_ifunc(target
, object
, r_type
, true))
5734 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
5735 r_type
, elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
5736 reloc
.get_r_addend());
5737 target
->make_plt_entry(symtab
, layout
, gsym
);
5738 pushed_ifunc
= true;
5743 case elfcpp::R_POWERPC_NONE
:
5744 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
5745 case elfcpp::R_POWERPC_GNU_VTENTRY
:
5746 case elfcpp::R_PPC_LOCAL24PC
:
5747 case elfcpp::R_POWERPC_TLS
:
5750 case elfcpp::R_PPC64_TOC
:
5752 Output_data_got_powerpc
<size
, big_endian
>* got
5753 = target
->got_section(symtab
, layout
);
5754 if (parameters
->options().output_is_position_independent())
5756 Address off
= reloc
.get_r_offset();
5758 && data_shndx
== ppc_object
->opd_shndx()
5759 && ppc_object
->get_opd_discard(off
- 8))
5762 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5763 Powerpc_relobj
<size
, big_endian
>* symobj
= ppc_object
;
5764 if (data_shndx
!= ppc_object
->opd_shndx())
5765 symobj
= static_cast
5766 <Powerpc_relobj
<size
, big_endian
>*>(gsym
->object());
5767 rela_dyn
->add_output_section_relative(got
->output_section(),
5768 elfcpp::R_POWERPC_RELATIVE
,
5770 object
, data_shndx
, off
,
5771 symobj
->toc_base_offset());
5776 case elfcpp::R_PPC64_ADDR64
:
5778 && target
->abiversion() < 2
5779 && data_shndx
== ppc_object
->opd_shndx()
5780 && (gsym
->is_defined_in_discarded_section()
5781 || gsym
->object() != object
))
5783 ppc_object
->set_opd_discard(reloc
.get_r_offset());
5787 case elfcpp::R_PPC64_UADDR64
:
5788 case elfcpp::R_POWERPC_ADDR32
:
5789 case elfcpp::R_POWERPC_UADDR32
:
5790 case elfcpp::R_POWERPC_ADDR24
:
5791 case elfcpp::R_POWERPC_ADDR16
:
5792 case elfcpp::R_POWERPC_ADDR16_LO
:
5793 case elfcpp::R_POWERPC_ADDR16_HI
:
5794 case elfcpp::R_POWERPC_ADDR16_HA
:
5795 case elfcpp::R_POWERPC_UADDR16
:
5796 case elfcpp::R_PPC64_ADDR16_HIGH
:
5797 case elfcpp::R_PPC64_ADDR16_HIGHA
:
5798 case elfcpp::R_PPC64_ADDR16_HIGHER
:
5799 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
5800 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
5801 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
5802 case elfcpp::R_PPC64_ADDR16_DS
:
5803 case elfcpp::R_PPC64_ADDR16_LO_DS
:
5804 case elfcpp::R_POWERPC_ADDR14
:
5805 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
5806 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
5808 // Make a PLT entry if necessary.
5809 if (gsym
->needs_plt_entry())
5811 // Since this is not a PC-relative relocation, we may be
5812 // taking the address of a function. In that case we need to
5813 // set the entry in the dynamic symbol table to the address of
5814 // the PLT call stub.
5815 bool need_ifunc_plt
= false;
5816 if ((size
== 32 || target
->abiversion() >= 2)
5817 && gsym
->is_from_dynobj()
5818 && !parameters
->options().output_is_position_independent())
5820 gsym
->set_needs_dynsym_value();
5821 need_ifunc_plt
= true;
5823 if (!is_ifunc
|| (!pushed_ifunc
&& need_ifunc_plt
))
5825 target
->push_branch(ppc_object
, data_shndx
,
5826 reloc
.get_r_offset(), r_type
,
5827 elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
5828 reloc
.get_r_addend());
5829 target
->make_plt_entry(symtab
, layout
, gsym
);
5832 // Make a dynamic relocation if necessary.
5833 if (gsym
->needs_dynamic_reloc(Scan::get_reference_flags(r_type
, target
))
5834 || (size
== 64 && is_ifunc
&& target
->abiversion() < 2))
5836 if (!parameters
->options().output_is_position_independent()
5837 && gsym
->may_need_copy_reloc())
5839 target
->copy_reloc(symtab
, layout
, object
,
5840 data_shndx
, output_section
, gsym
, reloc
);
5842 else if ((((size
== 32
5843 && r_type
== elfcpp::R_POWERPC_ADDR32
)
5845 && r_type
== elfcpp::R_PPC64_ADDR64
5846 && target
->abiversion() >= 2))
5847 && gsym
->can_use_relative_reloc(false)
5848 && !(gsym
->visibility() == elfcpp::STV_PROTECTED
5849 && parameters
->options().shared()))
5851 && r_type
== elfcpp::R_PPC64_ADDR64
5852 && target
->abiversion() < 2
5853 && (gsym
->can_use_relative_reloc(false)
5854 || data_shndx
== ppc_object
->opd_shndx())))
5856 Reloc_section
* rela_dyn
5857 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
5858 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
5859 : elfcpp::R_POWERPC_RELATIVE
);
5860 rela_dyn
->add_symbolless_global_addend(
5861 gsym
, dynrel
, output_section
, object
, data_shndx
,
5862 reloc
.get_r_offset(), reloc
.get_r_addend());
5866 Reloc_section
* rela_dyn
5867 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
5868 check_non_pic(object
, r_type
);
5869 rela_dyn
->add_global(gsym
, r_type
, output_section
,
5871 reloc
.get_r_offset(),
5872 reloc
.get_r_addend());
5878 case elfcpp::R_PPC_PLTREL24
:
5879 case elfcpp::R_POWERPC_REL24
:
5882 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
5884 elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
5885 reloc
.get_r_addend());
5886 if (gsym
->needs_plt_entry()
5887 || (!gsym
->final_value_is_known()
5888 && (gsym
->is_undefined()
5889 || gsym
->is_from_dynobj()
5890 || gsym
->is_preemptible())))
5891 target
->make_plt_entry(symtab
, layout
, gsym
);
5895 case elfcpp::R_PPC64_REL64
:
5896 case elfcpp::R_POWERPC_REL32
:
5897 // Make a dynamic relocation if necessary.
5898 if (gsym
->needs_dynamic_reloc(Scan::get_reference_flags(r_type
, target
)))
5900 if (!parameters
->options().output_is_position_independent()
5901 && gsym
->may_need_copy_reloc())
5903 target
->copy_reloc(symtab
, layout
, object
,
5904 data_shndx
, output_section
, gsym
,
5909 Reloc_section
* rela_dyn
5910 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
5911 check_non_pic(object
, r_type
);
5912 rela_dyn
->add_global(gsym
, r_type
, output_section
, object
,
5913 data_shndx
, reloc
.get_r_offset(),
5914 reloc
.get_r_addend());
5919 case elfcpp::R_POWERPC_REL14
:
5920 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
5921 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
5923 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
5924 r_type
, elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
5925 reloc
.get_r_addend());
5928 case elfcpp::R_POWERPC_REL16
:
5929 case elfcpp::R_POWERPC_REL16_LO
:
5930 case elfcpp::R_POWERPC_REL16_HI
:
5931 case elfcpp::R_POWERPC_REL16_HA
:
5932 case elfcpp::R_POWERPC_SECTOFF
:
5933 case elfcpp::R_POWERPC_SECTOFF_LO
:
5934 case elfcpp::R_POWERPC_SECTOFF_HI
:
5935 case elfcpp::R_POWERPC_SECTOFF_HA
:
5936 case elfcpp::R_PPC64_SECTOFF_DS
:
5937 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
5938 case elfcpp::R_POWERPC_TPREL16
:
5939 case elfcpp::R_POWERPC_TPREL16_LO
:
5940 case elfcpp::R_POWERPC_TPREL16_HI
:
5941 case elfcpp::R_POWERPC_TPREL16_HA
:
5942 case elfcpp::R_PPC64_TPREL16_DS
:
5943 case elfcpp::R_PPC64_TPREL16_LO_DS
:
5944 case elfcpp::R_PPC64_TPREL16_HIGH
:
5945 case elfcpp::R_PPC64_TPREL16_HIGHA
:
5946 case elfcpp::R_PPC64_TPREL16_HIGHER
:
5947 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
5948 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
5949 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
5950 case elfcpp::R_POWERPC_DTPREL16
:
5951 case elfcpp::R_POWERPC_DTPREL16_LO
:
5952 case elfcpp::R_POWERPC_DTPREL16_HI
:
5953 case elfcpp::R_POWERPC_DTPREL16_HA
:
5954 case elfcpp::R_PPC64_DTPREL16_DS
:
5955 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
5956 case elfcpp::R_PPC64_DTPREL16_HIGH
:
5957 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
5958 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
5959 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
5960 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
5961 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
5962 case elfcpp::R_PPC64_TLSGD
:
5963 case elfcpp::R_PPC64_TLSLD
:
5964 case elfcpp::R_PPC64_ADDR64_LOCAL
:
5967 case elfcpp::R_POWERPC_GOT16
:
5968 case elfcpp::R_POWERPC_GOT16_LO
:
5969 case elfcpp::R_POWERPC_GOT16_HI
:
5970 case elfcpp::R_POWERPC_GOT16_HA
:
5971 case elfcpp::R_PPC64_GOT16_DS
:
5972 case elfcpp::R_PPC64_GOT16_LO_DS
:
5974 // The symbol requires a GOT entry.
5975 Output_data_got_powerpc
<size
, big_endian
>* got
;
5977 got
= target
->got_section(symtab
, layout
);
5978 if (gsym
->final_value_is_known())
5980 if ((size
== 32 && is_ifunc
)
5981 || (size
== 64 && target
->abiversion() >= 2))
5982 got
->add_global_plt(gsym
, GOT_TYPE_STANDARD
);
5984 got
->add_global(gsym
, GOT_TYPE_STANDARD
);
5986 else if (!gsym
->has_got_offset(GOT_TYPE_STANDARD
))
5988 // If we are generating a shared object or a pie, this
5989 // symbol's GOT entry will be set by a dynamic relocation.
5990 unsigned int off
= got
->add_constant(0);
5991 gsym
->set_got_offset(GOT_TYPE_STANDARD
, off
);
5993 Reloc_section
* rela_dyn
5994 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
5996 if (gsym
->can_use_relative_reloc(false)
5998 || target
->abiversion() >= 2)
5999 && gsym
->visibility() == elfcpp::STV_PROTECTED
6000 && parameters
->options().shared()))
6002 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
6003 : elfcpp::R_POWERPC_RELATIVE
);
6004 rela_dyn
->add_global_relative(gsym
, dynrel
, got
, off
, 0, false);
6008 unsigned int dynrel
= elfcpp::R_POWERPC_GLOB_DAT
;
6009 rela_dyn
->add_global(gsym
, dynrel
, got
, off
, 0);
6015 case elfcpp::R_PPC64_TOC16
:
6016 case elfcpp::R_PPC64_TOC16_LO
:
6017 case elfcpp::R_PPC64_TOC16_HI
:
6018 case elfcpp::R_PPC64_TOC16_HA
:
6019 case elfcpp::R_PPC64_TOC16_DS
:
6020 case elfcpp::R_PPC64_TOC16_LO_DS
:
6021 // We need a GOT section.
6022 target
->got_section(symtab
, layout
);
6025 case elfcpp::R_POWERPC_GOT_TLSGD16
:
6026 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
6027 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
6028 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
6030 const bool final
= gsym
->final_value_is_known();
6031 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
6032 if (tls_type
== tls::TLSOPT_NONE
)
6034 Output_data_got_powerpc
<size
, big_endian
>* got
6035 = target
->got_section(symtab
, layout
);
6036 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
6037 got
->add_global_pair_with_rel(gsym
, GOT_TYPE_TLSGD
, rela_dyn
,
6038 elfcpp::R_POWERPC_DTPMOD
,
6039 elfcpp::R_POWERPC_DTPREL
);
6041 else if (tls_type
== tls::TLSOPT_TO_IE
)
6043 if (!gsym
->has_got_offset(GOT_TYPE_TPREL
))
6045 Output_data_got_powerpc
<size
, big_endian
>* got
6046 = target
->got_section(symtab
, layout
);
6047 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
6048 if (gsym
->is_undefined()
6049 || gsym
->is_from_dynobj())
6051 got
->add_global_with_rel(gsym
, GOT_TYPE_TPREL
, rela_dyn
,
6052 elfcpp::R_POWERPC_TPREL
);
6056 unsigned int off
= got
->add_constant(0);
6057 gsym
->set_got_offset(GOT_TYPE_TPREL
, off
);
6058 unsigned int dynrel
= elfcpp::R_POWERPC_TPREL
;
6059 rela_dyn
->add_symbolless_global_addend(gsym
, dynrel
,
6064 else if (tls_type
== tls::TLSOPT_TO_LE
)
6066 // no GOT relocs needed for Local Exec.
6073 case elfcpp::R_POWERPC_GOT_TLSLD16
:
6074 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
6075 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
6076 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
6078 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
6079 if (tls_type
== tls::TLSOPT_NONE
)
6080 target
->tlsld_got_offset(symtab
, layout
, object
);
6081 else if (tls_type
== tls::TLSOPT_TO_LE
)
6083 // no GOT relocs needed for Local Exec.
6084 if (parameters
->options().emit_relocs())
6086 Output_section
* os
= layout
->tls_segment()->first_section();
6087 gold_assert(os
!= NULL
);
6088 os
->set_needs_symtab_index();
6096 case elfcpp::R_POWERPC_GOT_DTPREL16
:
6097 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
6098 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
6099 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
6101 Output_data_got_powerpc
<size
, big_endian
>* got
6102 = target
->got_section(symtab
, layout
);
6103 if (!gsym
->final_value_is_known()
6104 && (gsym
->is_from_dynobj()
6105 || gsym
->is_undefined()
6106 || gsym
->is_preemptible()))
6107 got
->add_global_with_rel(gsym
, GOT_TYPE_DTPREL
,
6108 target
->rela_dyn_section(layout
),
6109 elfcpp::R_POWERPC_DTPREL
);
6111 got
->add_global_tls(gsym
, GOT_TYPE_DTPREL
);
6115 case elfcpp::R_POWERPC_GOT_TPREL16
:
6116 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
6117 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
6118 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
6120 const bool final
= gsym
->final_value_is_known();
6121 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
6122 if (tls_type
== tls::TLSOPT_NONE
)
6124 if (!gsym
->has_got_offset(GOT_TYPE_TPREL
))
6126 Output_data_got_powerpc
<size
, big_endian
>* got
6127 = target
->got_section(symtab
, layout
);
6128 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
6129 if (gsym
->is_undefined()
6130 || gsym
->is_from_dynobj())
6132 got
->add_global_with_rel(gsym
, GOT_TYPE_TPREL
, rela_dyn
,
6133 elfcpp::R_POWERPC_TPREL
);
6137 unsigned int off
= got
->add_constant(0);
6138 gsym
->set_got_offset(GOT_TYPE_TPREL
, off
);
6139 unsigned int dynrel
= elfcpp::R_POWERPC_TPREL
;
6140 rela_dyn
->add_symbolless_global_addend(gsym
, dynrel
,
6145 else if (tls_type
== tls::TLSOPT_TO_LE
)
6147 // no GOT relocs needed for Local Exec.
6155 unsupported_reloc_global(object
, r_type
, gsym
);
6161 case elfcpp::R_POWERPC_GOT_TLSLD16
:
6162 case elfcpp::R_POWERPC_GOT_TLSGD16
:
6163 case elfcpp::R_POWERPC_GOT_TPREL16
:
6164 case elfcpp::R_POWERPC_GOT_DTPREL16
:
6165 case elfcpp::R_POWERPC_GOT16
:
6166 case elfcpp::R_PPC64_GOT16_DS
:
6167 case elfcpp::R_PPC64_TOC16
:
6168 case elfcpp::R_PPC64_TOC16_DS
:
6169 ppc_object
->set_has_small_toc_reloc();
6175 // Process relocations for gc.
6177 template<int size
, bool big_endian
>
6179 Target_powerpc
<size
, big_endian
>::gc_process_relocs(
6180 Symbol_table
* symtab
,
6182 Sized_relobj_file
<size
, big_endian
>* object
,
6183 unsigned int data_shndx
,
6185 const unsigned char* prelocs
,
6187 Output_section
* output_section
,
6188 bool needs_special_offset_handling
,
6189 size_t local_symbol_count
,
6190 const unsigned char* plocal_symbols
)
6192 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
6193 typedef typename Target_powerpc
<size
, big_endian
>::Scan Scan
;
6194 Powerpc_relobj
<size
, big_endian
>* ppc_object
6195 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
6197 ppc_object
->set_opd_valid();
6198 if (size
== 64 && data_shndx
== ppc_object
->opd_shndx())
6200 typename Powerpc_relobj
<size
, big_endian
>::Access_from::iterator p
;
6201 for (p
= ppc_object
->access_from_map()->begin();
6202 p
!= ppc_object
->access_from_map()->end();
6205 Address dst_off
= p
->first
;
6206 unsigned int dst_indx
= ppc_object
->get_opd_ent(dst_off
);
6207 typename Powerpc_relobj
<size
, big_endian
>::Section_refs::iterator s
;
6208 for (s
= p
->second
.begin(); s
!= p
->second
.end(); ++s
)
6210 Object
* src_obj
= s
->first
;
6211 unsigned int src_indx
= s
->second
;
6212 symtab
->gc()->add_reference(src_obj
, src_indx
,
6213 ppc_object
, dst_indx
);
6217 ppc_object
->access_from_map()->clear();
6218 ppc_object
->process_gc_mark(symtab
);
6219 // Don't look at .opd relocs as .opd will reference everything.
6223 gold::gc_process_relocs
<size
, big_endian
, Powerpc
, elfcpp::SHT_RELA
, Scan
,
6224 typename
Target_powerpc::Relocatable_size_for_reloc
>(
6233 needs_special_offset_handling
,
6238 // Handle target specific gc actions when adding a gc reference from
6239 // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX
6240 // and DST_OFF. For powerpc64, this adds a referenc to the code
6241 // section of a function descriptor.
6243 template<int size
, bool big_endian
>
6245 Target_powerpc
<size
, big_endian
>::do_gc_add_reference(
6246 Symbol_table
* symtab
,
6248 unsigned int src_shndx
,
6250 unsigned int dst_shndx
,
6251 Address dst_off
) const
6253 if (size
!= 64 || dst_obj
->is_dynamic())
6256 Powerpc_relobj
<size
, big_endian
>* ppc_object
6257 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(dst_obj
);
6258 if (dst_shndx
!= 0 && dst_shndx
== ppc_object
->opd_shndx())
6260 if (ppc_object
->opd_valid())
6262 dst_shndx
= ppc_object
->get_opd_ent(dst_off
);
6263 symtab
->gc()->add_reference(src_obj
, src_shndx
, dst_obj
, dst_shndx
);
6267 // If we haven't run scan_opd_relocs, we must delay
6268 // processing this function descriptor reference.
6269 ppc_object
->add_reference(src_obj
, src_shndx
, dst_off
);
6274 // Add any special sections for this symbol to the gc work list.
6275 // For powerpc64, this adds the code section of a function
6278 template<int size
, bool big_endian
>
6280 Target_powerpc
<size
, big_endian
>::do_gc_mark_symbol(
6281 Symbol_table
* symtab
,
6286 Powerpc_relobj
<size
, big_endian
>* ppc_object
6287 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(sym
->object());
6289 unsigned int shndx
= sym
->shndx(&is_ordinary
);
6290 if (is_ordinary
&& shndx
!= 0 && shndx
== ppc_object
->opd_shndx())
6292 Sized_symbol
<size
>* gsym
= symtab
->get_sized_symbol
<size
>(sym
);
6293 Address dst_off
= gsym
->value();
6294 if (ppc_object
->opd_valid())
6296 unsigned int dst_indx
= ppc_object
->get_opd_ent(dst_off
);
6297 symtab
->gc()->worklist().push(Section_id(ppc_object
, dst_indx
));
6300 ppc_object
->add_gc_mark(dst_off
);
6305 // For a symbol location in .opd, set LOC to the location of the
6308 template<int size
, bool big_endian
>
6310 Target_powerpc
<size
, big_endian
>::do_function_location(
6311 Symbol_location
* loc
) const
6313 if (size
== 64 && loc
->shndx
!= 0)
6315 if (loc
->object
->is_dynamic())
6317 Powerpc_dynobj
<size
, big_endian
>* ppc_object
6318 = static_cast<Powerpc_dynobj
<size
, big_endian
>*>(loc
->object
);
6319 if (loc
->shndx
== ppc_object
->opd_shndx())
6322 Address off
= loc
->offset
- ppc_object
->opd_address();
6323 loc
->shndx
= ppc_object
->get_opd_ent(off
, &dest_off
);
6324 loc
->offset
= dest_off
;
6329 const Powerpc_relobj
<size
, big_endian
>* ppc_object
6330 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>(loc
->object
);
6331 if (loc
->shndx
== ppc_object
->opd_shndx())
6334 loc
->shndx
= ppc_object
->get_opd_ent(loc
->offset
, &dest_off
);
6335 loc
->offset
= dest_off
;
6341 // Scan relocations for a section.
6343 template<int size
, bool big_endian
>
6345 Target_powerpc
<size
, big_endian
>::scan_relocs(
6346 Symbol_table
* symtab
,
6348 Sized_relobj_file
<size
, big_endian
>* object
,
6349 unsigned int data_shndx
,
6350 unsigned int sh_type
,
6351 const unsigned char* prelocs
,
6353 Output_section
* output_section
,
6354 bool needs_special_offset_handling
,
6355 size_t local_symbol_count
,
6356 const unsigned char* plocal_symbols
)
6358 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
6359 typedef typename Target_powerpc
<size
, big_endian
>::Scan Scan
;
6361 if (sh_type
== elfcpp::SHT_REL
)
6363 gold_error(_("%s: unsupported REL reloc section"),
6364 object
->name().c_str());
6368 gold::scan_relocs
<size
, big_endian
, Powerpc
, elfcpp::SHT_RELA
, Scan
>(
6377 needs_special_offset_handling
,
6382 // Functor class for processing the global symbol table.
6383 // Removes symbols defined on discarded opd entries.
6385 template<bool big_endian
>
6386 class Global_symbol_visitor_opd
6389 Global_symbol_visitor_opd()
6393 operator()(Sized_symbol
<64>* sym
)
6395 if (sym
->has_symtab_index()
6396 || sym
->source() != Symbol::FROM_OBJECT
6397 || !sym
->in_real_elf())
6400 if (sym
->object()->is_dynamic())
6403 Powerpc_relobj
<64, big_endian
>* symobj
6404 = static_cast<Powerpc_relobj
<64, big_endian
>*>(sym
->object());
6405 if (symobj
->opd_shndx() == 0)
6409 unsigned int shndx
= sym
->shndx(&is_ordinary
);
6410 if (shndx
== symobj
->opd_shndx()
6411 && symobj
->get_opd_discard(sym
->value()))
6412 sym
->set_symtab_index(-1U);
6416 template<int size
, bool big_endian
>
6418 Target_powerpc
<size
, big_endian
>::define_save_restore_funcs(
6420 Symbol_table
* symtab
)
6424 Output_data_save_res
<64, big_endian
>* savres
6425 = new Output_data_save_res
<64, big_endian
>(symtab
);
6426 layout
->add_output_section_data(".text", elfcpp::SHT_PROGBITS
,
6427 elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
,
6428 savres
, ORDER_TEXT
, false);
6432 // Sort linker created .got section first (for the header), then input
6433 // sections belonging to files using small model code.
6435 template<bool big_endian
>
6436 class Sort_toc_sections
6440 operator()(const Output_section::Input_section
& is1
,
6441 const Output_section::Input_section
& is2
) const
6443 if (!is1
.is_input_section() && is2
.is_input_section())
6446 = (is1
.is_input_section()
6447 && (static_cast<const Powerpc_relobj
<64, big_endian
>*>(is1
.relobj())
6448 ->has_small_toc_reloc()));
6450 = (is2
.is_input_section()
6451 && (static_cast<const Powerpc_relobj
<64, big_endian
>*>(is2
.relobj())
6452 ->has_small_toc_reloc()));
6453 return small1
&& !small2
;
6457 // Finalize the sections.
6459 template<int size
, bool big_endian
>
6461 Target_powerpc
<size
, big_endian
>::do_finalize_sections(
6463 const Input_objects
*,
6464 Symbol_table
* symtab
)
6466 if (parameters
->doing_static_link())
6468 // At least some versions of glibc elf-init.o have a strong
6469 // reference to __rela_iplt marker syms. A weak ref would be
6471 if (this->iplt_
!= NULL
)
6473 Reloc_section
* rel
= this->iplt_
->rel_plt();
6474 symtab
->define_in_output_data("__rela_iplt_start", NULL
,
6475 Symbol_table::PREDEFINED
, rel
, 0, 0,
6476 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
6477 elfcpp::STV_HIDDEN
, 0, false, true);
6478 symtab
->define_in_output_data("__rela_iplt_end", NULL
,
6479 Symbol_table::PREDEFINED
, rel
, 0, 0,
6480 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
6481 elfcpp::STV_HIDDEN
, 0, true, true);
6485 symtab
->define_as_constant("__rela_iplt_start", NULL
,
6486 Symbol_table::PREDEFINED
, 0, 0,
6487 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
6488 elfcpp::STV_HIDDEN
, 0, true, false);
6489 symtab
->define_as_constant("__rela_iplt_end", NULL
,
6490 Symbol_table::PREDEFINED
, 0, 0,
6491 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
6492 elfcpp::STV_HIDDEN
, 0, true, false);
6498 typedef Global_symbol_visitor_opd
<big_endian
> Symbol_visitor
;
6499 symtab
->for_all_symbols
<64, Symbol_visitor
>(Symbol_visitor());
6501 if (!parameters
->options().relocatable())
6503 this->define_save_restore_funcs(layout
, symtab
);
6505 // Annoyingly, we need to make these sections now whether or
6506 // not we need them. If we delay until do_relax then we
6507 // need to mess with the relaxation machinery checkpointing.
6508 this->got_section(symtab
, layout
);
6509 this->make_brlt_section(layout
);
6511 if (parameters
->options().toc_sort())
6513 Output_section
* os
= this->got_
->output_section();
6514 if (os
!= NULL
&& os
->input_sections().size() > 1)
6515 std::stable_sort(os
->input_sections().begin(),
6516 os
->input_sections().end(),
6517 Sort_toc_sections
<big_endian
>());
6522 // Fill in some more dynamic tags.
6523 Output_data_dynamic
* odyn
= layout
->dynamic_data();
6526 const Reloc_section
* rel_plt
= (this->plt_
== NULL
6528 : this->plt_
->rel_plt());
6529 layout
->add_target_dynamic_tags(false, this->plt_
, rel_plt
,
6530 this->rela_dyn_
, true, size
== 32);
6534 if (this->got_
!= NULL
)
6536 this->got_
->finalize_data_size();
6537 odyn
->add_section_plus_offset(elfcpp::DT_PPC_GOT
,
6538 this->got_
, this->got_
->g_o_t());
6543 if (this->glink_
!= NULL
)
6545 this->glink_
->finalize_data_size();
6546 odyn
->add_section_plus_offset(elfcpp::DT_PPC64_GLINK
,
6548 (this->glink_
->pltresolve_size
6554 // Emit any relocs we saved in an attempt to avoid generating COPY
6556 if (this->copy_relocs_
.any_saved_relocs())
6557 this->copy_relocs_
.emit(this->rela_dyn_section(layout
));
6560 // Return TRUE iff INSN is one we expect on a _LO variety toc/got
6564 ok_lo_toc_insn(uint32_t insn
)
6566 return ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
6567 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
6568 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
6569 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
6570 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
6571 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
6572 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
6573 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
6574 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
6575 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
6576 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
6577 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
6578 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
6579 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
6580 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
6582 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
6583 && ((insn
& 3) == 0 || (insn
& 3) == 3))
6584 || (insn
& (0x3f << 26)) == 12u << 26 /* addic */);
6587 // Return the value to use for a branch relocation.
6589 template<int size
, bool big_endian
>
6590 typename Target_powerpc
<size
, big_endian
>::Address
6591 Target_powerpc
<size
, big_endian
>::symval_for_branch(
6592 const Symbol_table
* symtab
,
6594 const Sized_symbol
<size
>* gsym
,
6595 Powerpc_relobj
<size
, big_endian
>* object
,
6596 unsigned int *dest_shndx
)
6598 if (size
== 32 || this->abiversion() >= 2)
6602 // If the symbol is defined in an opd section, ie. is a function
6603 // descriptor, use the function descriptor code entry address
6604 Powerpc_relobj
<size
, big_endian
>* symobj
= object
;
6606 && gsym
->source() != Symbol::FROM_OBJECT
)
6609 symobj
= static_cast<Powerpc_relobj
<size
, big_endian
>*>(gsym
->object());
6610 unsigned int shndx
= symobj
->opd_shndx();
6613 Address opd_addr
= symobj
->get_output_section_offset(shndx
);
6614 if (opd_addr
== invalid_address
)
6616 opd_addr
+= symobj
->output_section_address(shndx
);
6617 if (value
>= opd_addr
&& value
< opd_addr
+ symobj
->section_size(shndx
))
6620 *dest_shndx
= symobj
->get_opd_ent(value
- opd_addr
, &sec_off
);
6621 if (symtab
->is_section_folded(symobj
, *dest_shndx
))
6624 = symtab
->icf()->get_folded_section(symobj
, *dest_shndx
);
6625 symobj
= static_cast<Powerpc_relobj
<size
, big_endian
>*>(folded
.first
);
6626 *dest_shndx
= folded
.second
;
6628 Address sec_addr
= symobj
->get_output_section_offset(*dest_shndx
);
6629 gold_assert(sec_addr
!= invalid_address
);
6630 sec_addr
+= symobj
->output_section(*dest_shndx
)->address();
6631 value
= sec_addr
+ sec_off
;
6636 // Perform a relocation.
6638 template<int size
, bool big_endian
>
6640 Target_powerpc
<size
, big_endian
>::Relocate::relocate(
6641 const Relocate_info
<size
, big_endian
>* relinfo
,
6642 Target_powerpc
* target
,
6645 const elfcpp::Rela
<size
, big_endian
>& rela
,
6646 unsigned int r_type
,
6647 const Sized_symbol
<size
>* gsym
,
6648 const Symbol_value
<size
>* psymval
,
6649 unsigned char* view
,
6651 section_size_type view_size
)
6656 switch (this->maybe_skip_tls_get_addr_call(r_type
, gsym
))
6658 case Track_tls::NOT_EXPECTED
:
6659 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
6660 _("__tls_get_addr call lacks marker reloc"));
6662 case Track_tls::EXPECTED
:
6663 // We have already complained.
6665 case Track_tls::SKIP
:
6667 case Track_tls::NORMAL
:
6671 typedef Powerpc_relocate_functions
<size
, big_endian
> Reloc
;
6672 typedef typename
elfcpp::Swap
<32, big_endian
>::Valtype Insn
;
6673 Powerpc_relobj
<size
, big_endian
>* const object
6674 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(relinfo
->object
);
6676 bool has_plt_value
= false;
6677 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
6679 ? gsym
->use_plt_offset(Scan::get_reference_flags(r_type
, target
))
6680 : object
->local_has_plt_offset(r_sym
))
6681 && (!psymval
->is_ifunc_symbol()
6682 || Scan::reloc_needs_plt_for_ifunc(target
, object
, r_type
, false)))
6686 && target
->abiversion() >= 2
6687 && !parameters
->options().output_is_position_independent()
6688 && !is_branch_reloc(r_type
))
6690 unsigned int off
= target
->glink_section()->find_global_entry(gsym
);
6691 gold_assert(off
!= (unsigned int)-1);
6692 value
= target
->glink_section()->global_entry_address() + off
;
6696 Stub_table
<size
, big_endian
>* stub_table
6697 = object
->stub_table(relinfo
->data_shndx
);
6698 if (stub_table
== NULL
)
6700 // This is a ref from a data section to an ifunc symbol.
6701 if (target
->stub_tables().size() != 0)
6702 stub_table
= target
->stub_tables()[0];
6704 gold_assert(stub_table
!= NULL
);
6707 off
= stub_table
->find_plt_call_entry(object
, gsym
, r_type
,
6708 rela
.get_r_addend());
6710 off
= stub_table
->find_plt_call_entry(object
, r_sym
, r_type
,
6711 rela
.get_r_addend());
6712 gold_assert(off
!= invalid_address
);
6713 value
= stub_table
->stub_address() + off
;
6715 has_plt_value
= true;
6718 if (r_type
== elfcpp::R_POWERPC_GOT16
6719 || r_type
== elfcpp::R_POWERPC_GOT16_LO
6720 || r_type
== elfcpp::R_POWERPC_GOT16_HI
6721 || r_type
== elfcpp::R_POWERPC_GOT16_HA
6722 || r_type
== elfcpp::R_PPC64_GOT16_DS
6723 || r_type
== elfcpp::R_PPC64_GOT16_LO_DS
)
6727 gold_assert(gsym
->has_got_offset(GOT_TYPE_STANDARD
));
6728 value
= gsym
->got_offset(GOT_TYPE_STANDARD
);
6732 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
6733 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_STANDARD
));
6734 value
= object
->local_got_offset(r_sym
, GOT_TYPE_STANDARD
);
6736 value
-= target
->got_section()->got_base_offset(object
);
6738 else if (r_type
== elfcpp::R_PPC64_TOC
)
6740 value
= (target
->got_section()->output_section()->address()
6741 + object
->toc_base_offset());
6743 else if (gsym
!= NULL
6744 && (r_type
== elfcpp::R_POWERPC_REL24
6745 || r_type
== elfcpp::R_PPC_PLTREL24
)
6750 typedef typename
elfcpp::Swap
<32, big_endian
>::Valtype Valtype
;
6751 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
6752 bool can_plt_call
= false;
6753 if (rela
.get_r_offset() + 8 <= view_size
)
6755 Valtype insn
= elfcpp::Swap
<32, big_endian
>::readval(wv
);
6756 Valtype insn2
= elfcpp::Swap
<32, big_endian
>::readval(wv
+ 1);
6759 || insn2
== cror_15_15_15
|| insn2
== cror_31_31_31
))
6761 elfcpp::Swap
<32, big_endian
>::
6762 writeval(wv
+ 1, ld_2_1
+ target
->stk_toc());
6763 can_plt_call
= true;
6768 // If we don't have a branch and link followed by a nop,
6769 // we can't go via the plt because there is no place to
6770 // put a toc restoring instruction.
6771 // Unless we know we won't be returning.
6772 if (strcmp(gsym
->name(), "__libc_start_main") == 0)
6773 can_plt_call
= true;
6777 // g++ as of 20130507 emits self-calls without a
6778 // following nop. This is arguably wrong since we have
6779 // conflicting information. On the one hand a global
6780 // symbol and on the other a local call sequence, but
6781 // don't error for this special case.
6782 // It isn't possible to cheaply verify we have exactly
6783 // such a call. Allow all calls to the same section.
6785 Address code
= value
;
6786 if (gsym
->source() == Symbol::FROM_OBJECT
6787 && gsym
->object() == object
)
6789 unsigned int dest_shndx
= 0;
6790 if (target
->abiversion() < 2)
6792 Address addend
= rela
.get_r_addend();
6793 Address opdent
= psymval
->value(object
, addend
);
6794 code
= target
->symval_for_branch(relinfo
->symtab
,
6795 opdent
, gsym
, object
,
6799 if (dest_shndx
== 0)
6800 dest_shndx
= gsym
->shndx(&is_ordinary
);
6801 ok
= dest_shndx
== relinfo
->data_shndx
;
6805 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
6806 _("call lacks nop, can't restore toc; "
6807 "recompile with -fPIC"));
6813 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
6814 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
6815 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HI
6816 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HA
)
6818 // First instruction of a global dynamic sequence, arg setup insn.
6819 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
6820 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
6821 enum Got_type got_type
= GOT_TYPE_STANDARD
;
6822 if (tls_type
== tls::TLSOPT_NONE
)
6823 got_type
= GOT_TYPE_TLSGD
;
6824 else if (tls_type
== tls::TLSOPT_TO_IE
)
6825 got_type
= GOT_TYPE_TPREL
;
6826 if (got_type
!= GOT_TYPE_STANDARD
)
6830 gold_assert(gsym
->has_got_offset(got_type
));
6831 value
= gsym
->got_offset(got_type
);
6835 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
6836 gold_assert(object
->local_has_got_offset(r_sym
, got_type
));
6837 value
= object
->local_got_offset(r_sym
, got_type
);
6839 value
-= target
->got_section()->got_base_offset(object
);
6841 if (tls_type
== tls::TLSOPT_TO_IE
)
6843 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
6844 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
6846 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6847 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
6848 insn
&= (1 << 26) - (1 << 16); // extract rt,ra from addi
6850 insn
|= 32 << 26; // lwz
6852 insn
|= 58 << 26; // ld
6853 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6855 r_type
+= (elfcpp::R_POWERPC_GOT_TPREL16
6856 - elfcpp::R_POWERPC_GOT_TLSGD16
);
6858 else if (tls_type
== tls::TLSOPT_TO_LE
)
6860 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
6861 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
6863 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6864 Insn insn
= addis_3_13
;
6867 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6868 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
6869 value
= psymval
->value(object
, rela
.get_r_addend());
6873 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6875 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6876 r_type
= elfcpp::R_POWERPC_NONE
;
6880 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
6881 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
6882 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HI
6883 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HA
)
6885 // First instruction of a local dynamic sequence, arg setup insn.
6886 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
6887 if (tls_type
== tls::TLSOPT_NONE
)
6889 value
= target
->tlsld_got_offset();
6890 value
-= target
->got_section()->got_base_offset(object
);
6894 gold_assert(tls_type
== tls::TLSOPT_TO_LE
);
6895 if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
6896 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
)
6898 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6899 Insn insn
= addis_3_13
;
6902 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6903 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
6908 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6910 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6911 r_type
= elfcpp::R_POWERPC_NONE
;
6915 else if (r_type
== elfcpp::R_POWERPC_GOT_DTPREL16
6916 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_LO
6917 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_HI
6918 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_HA
)
6920 // Accesses relative to a local dynamic sequence address,
6921 // no optimisation here.
6924 gold_assert(gsym
->has_got_offset(GOT_TYPE_DTPREL
));
6925 value
= gsym
->got_offset(GOT_TYPE_DTPREL
);
6929 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
6930 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_DTPREL
));
6931 value
= object
->local_got_offset(r_sym
, GOT_TYPE_DTPREL
);
6933 value
-= target
->got_section()->got_base_offset(object
);
6935 else if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
6936 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
6937 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HI
6938 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HA
)
6940 // First instruction of initial exec sequence.
6941 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
6942 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
6943 if (tls_type
== tls::TLSOPT_NONE
)
6947 gold_assert(gsym
->has_got_offset(GOT_TYPE_TPREL
));
6948 value
= gsym
->got_offset(GOT_TYPE_TPREL
);
6952 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
6953 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_TPREL
));
6954 value
= object
->local_got_offset(r_sym
, GOT_TYPE_TPREL
);
6956 value
-= target
->got_section()->got_base_offset(object
);
6960 gold_assert(tls_type
== tls::TLSOPT_TO_LE
);
6961 if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
6962 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
)
6964 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6965 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
6966 insn
&= (1 << 26) - (1 << 21); // extract rt from ld
6971 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6972 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
6973 value
= psymval
->value(object
, rela
.get_r_addend());
6977 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6979 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6980 r_type
= elfcpp::R_POWERPC_NONE
;
6984 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
6985 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
6987 // Second instruction of a global dynamic sequence,
6988 // the __tls_get_addr call
6989 this->expect_tls_get_addr_call(relinfo
, relnum
, rela
.get_r_offset());
6990 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
6991 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
6992 if (tls_type
!= tls::TLSOPT_NONE
)
6994 if (tls_type
== tls::TLSOPT_TO_IE
)
6996 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
6997 Insn insn
= add_3_3_13
;
7000 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7001 r_type
= elfcpp::R_POWERPC_NONE
;
7005 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
7006 Insn insn
= addi_3_3
;
7007 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7008 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
7009 view
+= 2 * big_endian
;
7010 value
= psymval
->value(object
, rela
.get_r_addend());
7012 this->skip_next_tls_get_addr_call();
7015 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
7016 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
7018 // Second instruction of a local dynamic sequence,
7019 // the __tls_get_addr call
7020 this->expect_tls_get_addr_call(relinfo
, relnum
, rela
.get_r_offset());
7021 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
7022 if (tls_type
== tls::TLSOPT_TO_LE
)
7024 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
7025 Insn insn
= addi_3_3
;
7026 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7027 this->skip_next_tls_get_addr_call();
7028 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
7029 view
+= 2 * big_endian
;
7033 else if (r_type
== elfcpp::R_POWERPC_TLS
)
7035 // Second instruction of an initial exec sequence
7036 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
7037 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
7038 if (tls_type
== tls::TLSOPT_TO_LE
)
7040 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
7041 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7042 unsigned int reg
= size
== 32 ? 2 : 13;
7043 insn
= at_tls_transform(insn
, reg
);
7044 gold_assert(insn
!= 0);
7045 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7046 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
7047 view
+= 2 * big_endian
;
7048 value
= psymval
->value(object
, rela
.get_r_addend());
7051 else if (!has_plt_value
)
7054 unsigned int dest_shndx
;
7055 if (r_type
!= elfcpp::R_PPC_PLTREL24
)
7056 addend
= rela
.get_r_addend();
7057 value
= psymval
->value(object
, addend
);
7058 if (size
== 64 && is_branch_reloc(r_type
))
7060 if (target
->abiversion() >= 2)
7063 value
+= object
->ppc64_local_entry_offset(gsym
);
7065 value
+= object
->ppc64_local_entry_offset(r_sym
);
7068 value
= target
->symval_for_branch(relinfo
->symtab
, value
,
7069 gsym
, object
, &dest_shndx
);
7071 unsigned int max_branch_offset
= 0;
7072 if (r_type
== elfcpp::R_POWERPC_REL24
7073 || r_type
== elfcpp::R_PPC_PLTREL24
7074 || r_type
== elfcpp::R_PPC_LOCAL24PC
)
7075 max_branch_offset
= 1 << 25;
7076 else if (r_type
== elfcpp::R_POWERPC_REL14
7077 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
7078 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
)
7079 max_branch_offset
= 1 << 15;
7080 if (max_branch_offset
!= 0
7081 && value
- address
+ max_branch_offset
>= 2 * max_branch_offset
)
7083 Stub_table
<size
, big_endian
>* stub_table
7084 = object
->stub_table(relinfo
->data_shndx
);
7085 if (stub_table
!= NULL
)
7087 Address off
= stub_table
->find_long_branch_entry(object
, value
);
7088 if (off
!= invalid_address
)
7089 value
= (stub_table
->stub_address() + stub_table
->plt_size()
7097 case elfcpp::R_PPC64_REL64
:
7098 case elfcpp::R_POWERPC_REL32
:
7099 case elfcpp::R_POWERPC_REL24
:
7100 case elfcpp::R_PPC_PLTREL24
:
7101 case elfcpp::R_PPC_LOCAL24PC
:
7102 case elfcpp::R_POWERPC_REL16
:
7103 case elfcpp::R_POWERPC_REL16_LO
:
7104 case elfcpp::R_POWERPC_REL16_HI
:
7105 case elfcpp::R_POWERPC_REL16_HA
:
7106 case elfcpp::R_POWERPC_REL14
:
7107 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
7108 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
7112 case elfcpp::R_PPC64_TOC16
:
7113 case elfcpp::R_PPC64_TOC16_LO
:
7114 case elfcpp::R_PPC64_TOC16_HI
:
7115 case elfcpp::R_PPC64_TOC16_HA
:
7116 case elfcpp::R_PPC64_TOC16_DS
:
7117 case elfcpp::R_PPC64_TOC16_LO_DS
:
7118 // Subtract the TOC base address.
7119 value
-= (target
->got_section()->output_section()->address()
7120 + object
->toc_base_offset());
7123 case elfcpp::R_POWERPC_SECTOFF
:
7124 case elfcpp::R_POWERPC_SECTOFF_LO
:
7125 case elfcpp::R_POWERPC_SECTOFF_HI
:
7126 case elfcpp::R_POWERPC_SECTOFF_HA
:
7127 case elfcpp::R_PPC64_SECTOFF_DS
:
7128 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
7130 value
-= os
->address();
7133 case elfcpp::R_PPC64_TPREL16_DS
:
7134 case elfcpp::R_PPC64_TPREL16_LO_DS
:
7135 case elfcpp::R_PPC64_TPREL16_HIGH
:
7136 case elfcpp::R_PPC64_TPREL16_HIGHA
:
7138 // R_PPC_TLSGD, R_PPC_TLSLD, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HI
7140 case elfcpp::R_POWERPC_TPREL16
:
7141 case elfcpp::R_POWERPC_TPREL16_LO
:
7142 case elfcpp::R_POWERPC_TPREL16_HI
:
7143 case elfcpp::R_POWERPC_TPREL16_HA
:
7144 case elfcpp::R_POWERPC_TPREL
:
7145 case elfcpp::R_PPC64_TPREL16_HIGHER
:
7146 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
7147 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
7148 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
7149 // tls symbol values are relative to tls_segment()->vaddr()
7153 case elfcpp::R_PPC64_DTPREL16_DS
:
7154 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
7155 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
7156 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
7157 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
7158 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
7160 // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO
7161 // R_PPC_EMB_NADDR16_HI, R_PPC_EMB_NADDR16_HA, R_PPC_EMB_SDAI16
7163 case elfcpp::R_POWERPC_DTPREL16
:
7164 case elfcpp::R_POWERPC_DTPREL16_LO
:
7165 case elfcpp::R_POWERPC_DTPREL16_HI
:
7166 case elfcpp::R_POWERPC_DTPREL16_HA
:
7167 case elfcpp::R_POWERPC_DTPREL
:
7168 case elfcpp::R_PPC64_DTPREL16_HIGH
:
7169 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
7170 // tls symbol values are relative to tls_segment()->vaddr()
7171 value
-= dtp_offset
;
7174 case elfcpp::R_PPC64_ADDR64_LOCAL
:
7176 value
+= object
->ppc64_local_entry_offset(gsym
);
7178 value
+= object
->ppc64_local_entry_offset(r_sym
);
7185 Insn branch_bit
= 0;
7188 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
7189 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
7190 branch_bit
= 1 << 21;
7191 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
7192 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
7194 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
7195 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7198 if (this->is_isa_v2
)
7200 // Set 'a' bit. This is 0b00010 in BO field for branch
7201 // on CR(BI) insns (BO == 001at or 011at), and 0b01000
7202 // for branch on CTR insns (BO == 1a00t or 1a01t).
7203 if ((insn
& (0x14 << 21)) == (0x04 << 21))
7205 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
7212 // Invert 'y' bit if not the default.
7213 if (static_cast<Signed_address
>(value
) < 0)
7216 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7226 // Multi-instruction sequences that access the TOC can be
7227 // optimized, eg. addis ra,r2,0; addi rb,ra,x;
7228 // to nop; addi rb,r2,x;
7234 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
7235 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
7236 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
7237 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
7238 case elfcpp::R_POWERPC_GOT16_HA
:
7239 case elfcpp::R_PPC64_TOC16_HA
:
7240 if (parameters
->options().toc_optimize())
7242 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
7243 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7244 if ((insn
& ((0x3f << 26) | 0x1f << 16))
7245 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
7246 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
7247 _("toc optimization is not supported "
7248 "for %#08x instruction"), insn
);
7249 else if (value
+ 0x8000 < 0x10000)
7251 elfcpp::Swap
<32, big_endian
>::writeval(iview
, nop
);
7257 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
7258 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
7259 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
7260 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
7261 case elfcpp::R_POWERPC_GOT16_LO
:
7262 case elfcpp::R_PPC64_GOT16_LO_DS
:
7263 case elfcpp::R_PPC64_TOC16_LO
:
7264 case elfcpp::R_PPC64_TOC16_LO_DS
:
7265 if (parameters
->options().toc_optimize())
7267 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
7268 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7269 if (!ok_lo_toc_insn(insn
))
7270 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
7271 _("toc optimization is not supported "
7272 "for %#08x instruction"), insn
);
7273 else if (value
+ 0x8000 < 0x10000)
7275 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
7277 // Transform addic to addi when we change reg.
7278 insn
&= ~((0x3f << 26) | (0x1f << 16));
7279 insn
|= (14u << 26) | (2 << 16);
7283 insn
&= ~(0x1f << 16);
7286 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7293 typename
Reloc::Overflow_check overflow
= Reloc::CHECK_NONE
;
7294 elfcpp::Shdr
<size
, big_endian
> shdr(relinfo
->data_shdr
);
7297 case elfcpp::R_POWERPC_ADDR32
:
7298 case elfcpp::R_POWERPC_UADDR32
:
7300 overflow
= Reloc::CHECK_BITFIELD
;
7303 case elfcpp::R_POWERPC_REL32
:
7305 overflow
= Reloc::CHECK_SIGNED
;
7308 case elfcpp::R_POWERPC_UADDR16
:
7309 overflow
= Reloc::CHECK_BITFIELD
;
7312 case elfcpp::R_POWERPC_ADDR16
:
7313 // We really should have three separate relocations,
7314 // one for 16-bit data, one for insns with 16-bit signed fields,
7315 // and one for insns with 16-bit unsigned fields.
7316 overflow
= Reloc::CHECK_BITFIELD
;
7317 if ((shdr
.get_sh_flags() & elfcpp::SHF_EXECINSTR
) != 0)
7318 overflow
= Reloc::CHECK_LOW_INSN
;
7321 case elfcpp::R_POWERPC_ADDR16_HI
:
7322 case elfcpp::R_POWERPC_ADDR16_HA
:
7323 case elfcpp::R_POWERPC_GOT16_HI
:
7324 case elfcpp::R_POWERPC_GOT16_HA
:
7325 case elfcpp::R_POWERPC_PLT16_HI
:
7326 case elfcpp::R_POWERPC_PLT16_HA
:
7327 case elfcpp::R_POWERPC_SECTOFF_HI
:
7328 case elfcpp::R_POWERPC_SECTOFF_HA
:
7329 case elfcpp::R_PPC64_TOC16_HI
:
7330 case elfcpp::R_PPC64_TOC16_HA
:
7331 case elfcpp::R_PPC64_PLTGOT16_HI
:
7332 case elfcpp::R_PPC64_PLTGOT16_HA
:
7333 case elfcpp::R_POWERPC_TPREL16_HI
:
7334 case elfcpp::R_POWERPC_TPREL16_HA
:
7335 case elfcpp::R_POWERPC_DTPREL16_HI
:
7336 case elfcpp::R_POWERPC_DTPREL16_HA
:
7337 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
7338 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
7339 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
7340 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
7341 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
7342 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
7343 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
7344 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
7345 case elfcpp::R_POWERPC_REL16_HI
:
7346 case elfcpp::R_POWERPC_REL16_HA
:
7348 overflow
= Reloc::CHECK_HIGH_INSN
;
7351 case elfcpp::R_POWERPC_REL16
:
7352 case elfcpp::R_PPC64_TOC16
:
7353 case elfcpp::R_POWERPC_GOT16
:
7354 case elfcpp::R_POWERPC_SECTOFF
:
7355 case elfcpp::R_POWERPC_TPREL16
:
7356 case elfcpp::R_POWERPC_DTPREL16
:
7357 case elfcpp::R_POWERPC_GOT_TLSGD16
:
7358 case elfcpp::R_POWERPC_GOT_TLSLD16
:
7359 case elfcpp::R_POWERPC_GOT_TPREL16
:
7360 case elfcpp::R_POWERPC_GOT_DTPREL16
:
7361 overflow
= Reloc::CHECK_LOW_INSN
;
7364 case elfcpp::R_POWERPC_ADDR24
:
7365 case elfcpp::R_POWERPC_ADDR14
:
7366 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
7367 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
7368 case elfcpp::R_PPC64_ADDR16_DS
:
7369 case elfcpp::R_POWERPC_REL24
:
7370 case elfcpp::R_PPC_PLTREL24
:
7371 case elfcpp::R_PPC_LOCAL24PC
:
7372 case elfcpp::R_PPC64_TPREL16_DS
:
7373 case elfcpp::R_PPC64_DTPREL16_DS
:
7374 case elfcpp::R_PPC64_TOC16_DS
:
7375 case elfcpp::R_PPC64_GOT16_DS
:
7376 case elfcpp::R_PPC64_SECTOFF_DS
:
7377 case elfcpp::R_POWERPC_REL14
:
7378 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
7379 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
7380 overflow
= Reloc::CHECK_SIGNED
;
7384 if (overflow
== Reloc::CHECK_LOW_INSN
7385 || overflow
== Reloc::CHECK_HIGH_INSN
)
7387 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
7388 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7390 overflow
= Reloc::CHECK_SIGNED
;
7391 if (overflow
== Reloc::CHECK_LOW_INSN
7392 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
7393 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
7394 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */
7395 || (insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
7396 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
7397 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
7398 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
7399 overflow
= Reloc::CHECK_UNSIGNED
;
7402 typename Powerpc_relocate_functions
<size
, big_endian
>::Status status
7403 = Powerpc_relocate_functions
<size
, big_endian
>::STATUS_OK
;
7406 case elfcpp::R_POWERPC_NONE
:
7407 case elfcpp::R_POWERPC_TLS
:
7408 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
7409 case elfcpp::R_POWERPC_GNU_VTENTRY
:
7412 case elfcpp::R_PPC64_ADDR64
:
7413 case elfcpp::R_PPC64_REL64
:
7414 case elfcpp::R_PPC64_TOC
:
7415 case elfcpp::R_PPC64_ADDR64_LOCAL
:
7416 Reloc::addr64(view
, value
);
7419 case elfcpp::R_POWERPC_TPREL
:
7420 case elfcpp::R_POWERPC_DTPREL
:
7422 Reloc::addr64(view
, value
);
7424 status
= Reloc::addr32(view
, value
, overflow
);
7427 case elfcpp::R_PPC64_UADDR64
:
7428 Reloc::addr64_u(view
, value
);
7431 case elfcpp::R_POWERPC_ADDR32
:
7432 status
= Reloc::addr32(view
, value
, overflow
);
7435 case elfcpp::R_POWERPC_REL32
:
7436 case elfcpp::R_POWERPC_UADDR32
:
7437 status
= Reloc::addr32_u(view
, value
, overflow
);
7440 case elfcpp::R_POWERPC_ADDR24
:
7441 case elfcpp::R_POWERPC_REL24
:
7442 case elfcpp::R_PPC_PLTREL24
:
7443 case elfcpp::R_PPC_LOCAL24PC
:
7444 status
= Reloc::addr24(view
, value
, overflow
);
7447 case elfcpp::R_POWERPC_GOT_DTPREL16
:
7448 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
7451 status
= Reloc::addr16_ds(view
, value
, overflow
);
7454 case elfcpp::R_POWERPC_ADDR16
:
7455 case elfcpp::R_POWERPC_REL16
:
7456 case elfcpp::R_PPC64_TOC16
:
7457 case elfcpp::R_POWERPC_GOT16
:
7458 case elfcpp::R_POWERPC_SECTOFF
:
7459 case elfcpp::R_POWERPC_TPREL16
:
7460 case elfcpp::R_POWERPC_DTPREL16
:
7461 case elfcpp::R_POWERPC_GOT_TLSGD16
:
7462 case elfcpp::R_POWERPC_GOT_TLSLD16
:
7463 case elfcpp::R_POWERPC_GOT_TPREL16
:
7464 case elfcpp::R_POWERPC_ADDR16_LO
:
7465 case elfcpp::R_POWERPC_REL16_LO
:
7466 case elfcpp::R_PPC64_TOC16_LO
:
7467 case elfcpp::R_POWERPC_GOT16_LO
:
7468 case elfcpp::R_POWERPC_SECTOFF_LO
:
7469 case elfcpp::R_POWERPC_TPREL16_LO
:
7470 case elfcpp::R_POWERPC_DTPREL16_LO
:
7471 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
7472 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
7473 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
7474 status
= Reloc::addr16(view
, value
, overflow
);
7477 case elfcpp::R_POWERPC_UADDR16
:
7478 status
= Reloc::addr16_u(view
, value
, overflow
);
7481 case elfcpp::R_PPC64_ADDR16_HIGH
:
7482 case elfcpp::R_PPC64_TPREL16_HIGH
:
7483 case elfcpp::R_PPC64_DTPREL16_HIGH
:
7485 // R_PPC_EMB_MRKREF, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HA
7487 case elfcpp::R_POWERPC_ADDR16_HI
:
7488 case elfcpp::R_POWERPC_REL16_HI
:
7489 case elfcpp::R_PPC64_TOC16_HI
:
7490 case elfcpp::R_POWERPC_GOT16_HI
:
7491 case elfcpp::R_POWERPC_SECTOFF_HI
:
7492 case elfcpp::R_POWERPC_TPREL16_HI
:
7493 case elfcpp::R_POWERPC_DTPREL16_HI
:
7494 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
7495 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
7496 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
7497 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
7498 Reloc::addr16_hi(view
, value
);
7501 case elfcpp::R_PPC64_ADDR16_HIGHA
:
7502 case elfcpp::R_PPC64_TPREL16_HIGHA
:
7503 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
7505 // R_PPC_EMB_RELSEC16, R_PPC_EMB_RELST_HI, R_PPC_EMB_BIT_FLD
7507 case elfcpp::R_POWERPC_ADDR16_HA
:
7508 case elfcpp::R_POWERPC_REL16_HA
:
7509 case elfcpp::R_PPC64_TOC16_HA
:
7510 case elfcpp::R_POWERPC_GOT16_HA
:
7511 case elfcpp::R_POWERPC_SECTOFF_HA
:
7512 case elfcpp::R_POWERPC_TPREL16_HA
:
7513 case elfcpp::R_POWERPC_DTPREL16_HA
:
7514 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
7515 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
7516 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
7517 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
7518 Reloc::addr16_ha(view
, value
);
7521 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
7523 // R_PPC_EMB_NADDR16_LO
7525 case elfcpp::R_PPC64_ADDR16_HIGHER
:
7526 case elfcpp::R_PPC64_TPREL16_HIGHER
:
7527 Reloc::addr16_hi2(view
, value
);
7530 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
7532 // R_PPC_EMB_NADDR16_HI
7534 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
7535 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
7536 Reloc::addr16_ha2(view
, value
);
7539 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
7541 // R_PPC_EMB_NADDR16_HA
7543 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
7544 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
7545 Reloc::addr16_hi3(view
, value
);
7548 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
7552 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
7553 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
7554 Reloc::addr16_ha3(view
, value
);
7557 case elfcpp::R_PPC64_DTPREL16_DS
:
7558 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
7560 // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16
7562 case elfcpp::R_PPC64_TPREL16_DS
:
7563 case elfcpp::R_PPC64_TPREL16_LO_DS
:
7565 // R_PPC_TLSGD, R_PPC_TLSLD
7567 case elfcpp::R_PPC64_ADDR16_DS
:
7568 case elfcpp::R_PPC64_ADDR16_LO_DS
:
7569 case elfcpp::R_PPC64_TOC16_DS
:
7570 case elfcpp::R_PPC64_TOC16_LO_DS
:
7571 case elfcpp::R_PPC64_GOT16_DS
:
7572 case elfcpp::R_PPC64_GOT16_LO_DS
:
7573 case elfcpp::R_PPC64_SECTOFF_DS
:
7574 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
7575 status
= Reloc::addr16_ds(view
, value
, overflow
);
7578 case elfcpp::R_POWERPC_ADDR14
:
7579 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
7580 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
7581 case elfcpp::R_POWERPC_REL14
:
7582 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
7583 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
7584 status
= Reloc::addr14(view
, value
, overflow
);
7587 case elfcpp::R_POWERPC_COPY
:
7588 case elfcpp::R_POWERPC_GLOB_DAT
:
7589 case elfcpp::R_POWERPC_JMP_SLOT
:
7590 case elfcpp::R_POWERPC_RELATIVE
:
7591 case elfcpp::R_POWERPC_DTPMOD
:
7592 case elfcpp::R_PPC64_JMP_IREL
:
7593 case elfcpp::R_POWERPC_IRELATIVE
:
7594 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
7595 _("unexpected reloc %u in object file"),
7599 case elfcpp::R_PPC_EMB_SDA21
:
7604 // R_PPC64_TOCSAVE. For the time being this can be ignored.
7608 case elfcpp::R_PPC_EMB_SDA2I16
:
7609 case elfcpp::R_PPC_EMB_SDA2REL
:
7612 // R_PPC64_TLSGD, R_PPC64_TLSLD
7615 case elfcpp::R_POWERPC_PLT32
:
7616 case elfcpp::R_POWERPC_PLTREL32
:
7617 case elfcpp::R_POWERPC_PLT16_LO
:
7618 case elfcpp::R_POWERPC_PLT16_HI
:
7619 case elfcpp::R_POWERPC_PLT16_HA
:
7620 case elfcpp::R_PPC_SDAREL16
:
7621 case elfcpp::R_POWERPC_ADDR30
:
7622 case elfcpp::R_PPC64_PLT64
:
7623 case elfcpp::R_PPC64_PLTREL64
:
7624 case elfcpp::R_PPC64_PLTGOT16
:
7625 case elfcpp::R_PPC64_PLTGOT16_LO
:
7626 case elfcpp::R_PPC64_PLTGOT16_HI
:
7627 case elfcpp::R_PPC64_PLTGOT16_HA
:
7628 case elfcpp::R_PPC64_PLT16_LO_DS
:
7629 case elfcpp::R_PPC64_PLTGOT16_DS
:
7630 case elfcpp::R_PPC64_PLTGOT16_LO_DS
:
7631 case elfcpp::R_PPC_EMB_RELSDA
:
7632 case elfcpp::R_PPC_TOC16
:
7635 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
7636 _("unsupported reloc %u"),
7640 if (status
!= Powerpc_relocate_functions
<size
, big_endian
>::STATUS_OK
)
7641 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
7642 _("relocation overflow"));
7647 // Relocate section data.
7649 template<int size
, bool big_endian
>
7651 Target_powerpc
<size
, big_endian
>::relocate_section(
7652 const Relocate_info
<size
, big_endian
>* relinfo
,
7653 unsigned int sh_type
,
7654 const unsigned char* prelocs
,
7656 Output_section
* output_section
,
7657 bool needs_special_offset_handling
,
7658 unsigned char* view
,
7660 section_size_type view_size
,
7661 const Reloc_symbol_changes
* reloc_symbol_changes
)
7663 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
7664 typedef typename Target_powerpc
<size
, big_endian
>::Relocate Powerpc_relocate
;
7665 typedef typename Target_powerpc
<size
, big_endian
>::Relocate_comdat_behavior
7666 Powerpc_comdat_behavior
;
7668 gold_assert(sh_type
== elfcpp::SHT_RELA
);
7670 gold::relocate_section
<size
, big_endian
, Powerpc
, elfcpp::SHT_RELA
,
7671 Powerpc_relocate
, Powerpc_comdat_behavior
>(
7677 needs_special_offset_handling
,
7681 reloc_symbol_changes
);
7684 class Powerpc_scan_relocatable_reloc
7687 // Return the strategy to use for a local symbol which is not a
7688 // section symbol, given the relocation type.
7689 inline Relocatable_relocs::Reloc_strategy
7690 local_non_section_strategy(unsigned int r_type
, Relobj
*, unsigned int r_sym
)
7692 if (r_type
== 0 && r_sym
== 0)
7693 return Relocatable_relocs::RELOC_DISCARD
;
7694 return Relocatable_relocs::RELOC_COPY
;
7697 // Return the strategy to use for a local symbol which is a section
7698 // symbol, given the relocation type.
7699 inline Relocatable_relocs::Reloc_strategy
7700 local_section_strategy(unsigned int, Relobj
*)
7702 return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
;
7705 // Return the strategy to use for a global symbol, given the
7706 // relocation type, the object, and the symbol index.
7707 inline Relocatable_relocs::Reloc_strategy
7708 global_strategy(unsigned int r_type
, Relobj
*, unsigned int)
7710 if (r_type
== elfcpp::R_PPC_PLTREL24
)
7711 return Relocatable_relocs::RELOC_SPECIAL
;
7712 return Relocatable_relocs::RELOC_COPY
;
7716 // Scan the relocs during a relocatable link.
7718 template<int size
, bool big_endian
>
7720 Target_powerpc
<size
, big_endian
>::scan_relocatable_relocs(
7721 Symbol_table
* symtab
,
7723 Sized_relobj_file
<size
, big_endian
>* object
,
7724 unsigned int data_shndx
,
7725 unsigned int sh_type
,
7726 const unsigned char* prelocs
,
7728 Output_section
* output_section
,
7729 bool needs_special_offset_handling
,
7730 size_t local_symbol_count
,
7731 const unsigned char* plocal_symbols
,
7732 Relocatable_relocs
* rr
)
7734 gold_assert(sh_type
== elfcpp::SHT_RELA
);
7736 gold::scan_relocatable_relocs
<size
, big_endian
, elfcpp::SHT_RELA
,
7737 Powerpc_scan_relocatable_reloc
>(
7745 needs_special_offset_handling
,
7751 // Emit relocations for a section.
7752 // This is a modified version of the function by the same name in
7753 // target-reloc.h. Using relocate_special_relocatable for
7754 // R_PPC_PLTREL24 would require duplication of the entire body of the
7755 // loop, so we may as well duplicate the whole thing.
7757 template<int size
, bool big_endian
>
7759 Target_powerpc
<size
, big_endian
>::relocate_relocs(
7760 const Relocate_info
<size
, big_endian
>* relinfo
,
7761 unsigned int sh_type
,
7762 const unsigned char* prelocs
,
7764 Output_section
* output_section
,
7765 typename
elfcpp::Elf_types
<size
>::Elf_Off offset_in_output_section
,
7766 const Relocatable_relocs
* rr
,
7768 Address view_address
,
7770 unsigned char* reloc_view
,
7771 section_size_type reloc_view_size
)
7773 gold_assert(sh_type
== elfcpp::SHT_RELA
);
7775 typedef typename Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::Reloc
7777 typedef typename Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::Reloc_write
7779 const int reloc_size
7780 = Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
7782 Powerpc_relobj
<size
, big_endian
>* const object
7783 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(relinfo
->object
);
7784 const unsigned int local_count
= object
->local_symbol_count();
7785 unsigned int got2_shndx
= object
->got2_shndx();
7786 Address got2_addend
= 0;
7787 if (got2_shndx
!= 0)
7789 got2_addend
= object
->get_output_section_offset(got2_shndx
);
7790 gold_assert(got2_addend
!= invalid_address
);
7793 unsigned char* pwrite
= reloc_view
;
7794 bool zap_next
= false;
7795 for (size_t i
= 0; i
< reloc_count
; ++i
, prelocs
+= reloc_size
)
7797 Relocatable_relocs::Reloc_strategy strategy
= rr
->strategy(i
);
7798 if (strategy
== Relocatable_relocs::RELOC_DISCARD
)
7801 Reltype
reloc(prelocs
);
7802 Reltype_write
reloc_write(pwrite
);
7804 Address offset
= reloc
.get_r_offset();
7805 typename
elfcpp::Elf_types
<size
>::Elf_WXword r_info
= reloc
.get_r_info();
7806 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(r_info
);
7807 unsigned int r_type
= elfcpp::elf_r_type
<size
>(r_info
);
7808 const unsigned int orig_r_sym
= r_sym
;
7809 typename
elfcpp::Elf_types
<size
>::Elf_Swxword addend
7810 = reloc
.get_r_addend();
7811 const Symbol
* gsym
= NULL
;
7815 // We could arrange to discard these and other relocs for
7816 // tls optimised sequences in the strategy methods, but for
7817 // now do as BFD ld does.
7818 r_type
= elfcpp::R_POWERPC_NONE
;
7822 // Get the new symbol index.
7823 if (r_sym
< local_count
)
7827 case Relocatable_relocs::RELOC_COPY
:
7828 case Relocatable_relocs::RELOC_SPECIAL
:
7831 r_sym
= object
->symtab_index(r_sym
);
7832 gold_assert(r_sym
!= -1U);
7836 case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
:
7838 // We are adjusting a section symbol. We need to find
7839 // the symbol table index of the section symbol for
7840 // the output section corresponding to input section
7841 // in which this symbol is defined.
7842 gold_assert(r_sym
< local_count
);
7844 unsigned int shndx
=
7845 object
->local_symbol_input_shndx(r_sym
, &is_ordinary
);
7846 gold_assert(is_ordinary
);
7847 Output_section
* os
= object
->output_section(shndx
);
7848 gold_assert(os
!= NULL
);
7849 gold_assert(os
->needs_symtab_index());
7850 r_sym
= os
->symtab_index();
7860 gsym
= object
->global_symbol(r_sym
);
7861 gold_assert(gsym
!= NULL
);
7862 if (gsym
->is_forwarder())
7863 gsym
= relinfo
->symtab
->resolve_forwards(gsym
);
7865 gold_assert(gsym
->has_symtab_index());
7866 r_sym
= gsym
->symtab_index();
7869 // Get the new offset--the location in the output section where
7870 // this relocation should be applied.
7871 if (static_cast<Address
>(offset_in_output_section
) != invalid_address
)
7872 offset
+= offset_in_output_section
;
7875 section_offset_type sot_offset
=
7876 convert_types
<section_offset_type
, Address
>(offset
);
7877 section_offset_type new_sot_offset
=
7878 output_section
->output_offset(object
, relinfo
->data_shndx
,
7880 gold_assert(new_sot_offset
!= -1);
7881 offset
= new_sot_offset
;
7884 // In an object file, r_offset is an offset within the section.
7885 // In an executable or dynamic object, generated by
7886 // --emit-relocs, r_offset is an absolute address.
7887 if (!parameters
->options().relocatable())
7889 offset
+= view_address
;
7890 if (static_cast<Address
>(offset_in_output_section
) != invalid_address
)
7891 offset
-= offset_in_output_section
;
7894 // Handle the reloc addend based on the strategy.
7895 if (strategy
== Relocatable_relocs::RELOC_COPY
)
7897 else if (strategy
== Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
)
7899 const Symbol_value
<size
>* psymval
= object
->local_symbol(orig_r_sym
);
7900 addend
= psymval
->value(object
, addend
);
7902 else if (strategy
== Relocatable_relocs::RELOC_SPECIAL
)
7904 if (addend
>= 32768)
7905 addend
+= got2_addend
;
7910 if (!parameters
->options().relocatable())
7912 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
7913 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
7914 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HI
7915 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HA
)
7917 // First instruction of a global dynamic sequence,
7919 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
7920 switch (this->optimize_tls_gd(final
))
7922 case tls::TLSOPT_TO_IE
:
7923 r_type
+= (elfcpp::R_POWERPC_GOT_TPREL16
7924 - elfcpp::R_POWERPC_GOT_TLSGD16
);
7926 case tls::TLSOPT_TO_LE
:
7927 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
7928 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
7929 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
7932 r_type
= elfcpp::R_POWERPC_NONE
;
7933 offset
-= 2 * big_endian
;
7940 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
7941 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
7942 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HI
7943 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HA
)
7945 // First instruction of a local dynamic sequence,
7947 if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE
)
7949 if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
7950 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
)
7952 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
7953 const Output_section
* os
= relinfo
->layout
->tls_segment()
7955 gold_assert(os
!= NULL
);
7956 gold_assert(os
->needs_symtab_index());
7957 r_sym
= os
->symtab_index();
7958 addend
= dtp_offset
;
7962 r_type
= elfcpp::R_POWERPC_NONE
;
7963 offset
-= 2 * big_endian
;
7967 else if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
7968 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
7969 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HI
7970 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HA
)
7972 // First instruction of initial exec sequence.
7973 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
7974 if (this->optimize_tls_ie(final
) == tls::TLSOPT_TO_LE
)
7976 if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
7977 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
)
7978 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
7981 r_type
= elfcpp::R_POWERPC_NONE
;
7982 offset
-= 2 * big_endian
;
7986 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
7987 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
7989 // Second instruction of a global dynamic sequence,
7990 // the __tls_get_addr call
7991 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
7992 switch (this->optimize_tls_gd(final
))
7994 case tls::TLSOPT_TO_IE
:
7995 r_type
= elfcpp::R_POWERPC_NONE
;
7998 case tls::TLSOPT_TO_LE
:
7999 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
8000 offset
+= 2 * big_endian
;
8007 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
8008 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
8010 // Second instruction of a local dynamic sequence,
8011 // the __tls_get_addr call
8012 if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE
)
8014 const Output_section
* os
= relinfo
->layout
->tls_segment()
8016 gold_assert(os
!= NULL
);
8017 gold_assert(os
->needs_symtab_index());
8018 r_sym
= os
->symtab_index();
8019 addend
= dtp_offset
;
8020 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
8021 offset
+= 2 * big_endian
;
8025 else if (r_type
== elfcpp::R_POWERPC_TLS
)
8027 // Second instruction of an initial exec sequence
8028 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
8029 if (this->optimize_tls_ie(final
) == tls::TLSOPT_TO_LE
)
8031 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
8032 offset
+= 2 * big_endian
;
8037 reloc_write
.put_r_offset(offset
);
8038 reloc_write
.put_r_info(elfcpp::elf_r_info
<size
>(r_sym
, r_type
));
8039 reloc_write
.put_r_addend(addend
);
8041 pwrite
+= reloc_size
;
8044 gold_assert(static_cast<section_size_type
>(pwrite
- reloc_view
)
8045 == reloc_view_size
);
8048 // Return the value to use for a dynamic symbol which requires special
8049 // treatment. This is how we support equality comparisons of function
8050 // pointers across shared library boundaries, as described in the
8051 // processor specific ABI supplement.
8053 template<int size
, bool big_endian
>
8055 Target_powerpc
<size
, big_endian
>::do_dynsym_value(const Symbol
* gsym
) const
8059 gold_assert(gsym
->is_from_dynobj() && gsym
->has_plt_offset());
8060 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
8061 p
!= this->stub_tables_
.end();
8064 Address off
= (*p
)->find_plt_call_entry(gsym
);
8065 if (off
!= invalid_address
)
8066 return (*p
)->stub_address() + off
;
8069 else if (this->abiversion() >= 2)
8071 unsigned int off
= this->glink_section()->find_global_entry(gsym
);
8072 if (off
!= (unsigned int)-1)
8073 return this->glink_section()->global_entry_address() + off
;
8078 // Return the PLT address to use for a local symbol.
8079 template<int size
, bool big_endian
>
8081 Target_powerpc
<size
, big_endian
>::do_plt_address_for_local(
8082 const Relobj
* object
,
8083 unsigned int symndx
) const
8087 const Sized_relobj
<size
, big_endian
>* relobj
8088 = static_cast<const Sized_relobj
<size
, big_endian
>*>(object
);
8089 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
8090 p
!= this->stub_tables_
.end();
8093 Address off
= (*p
)->find_plt_call_entry(relobj
->sized_relobj(),
8095 if (off
!= invalid_address
)
8096 return (*p
)->stub_address() + off
;
8102 // Return the PLT address to use for a global symbol.
8103 template<int size
, bool big_endian
>
8105 Target_powerpc
<size
, big_endian
>::do_plt_address_for_global(
8106 const Symbol
* gsym
) const
8110 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
8111 p
!= this->stub_tables_
.end();
8114 Address off
= (*p
)->find_plt_call_entry(gsym
);
8115 if (off
!= invalid_address
)
8116 return (*p
)->stub_address() + off
;
8119 else if (this->abiversion() >= 2)
8121 unsigned int off
= this->glink_section()->find_global_entry(gsym
);
8122 if (off
!= (unsigned int)-1)
8123 return this->glink_section()->global_entry_address() + off
;
8128 // Return the offset to use for the GOT_INDX'th got entry which is
8129 // for a local tls symbol specified by OBJECT, SYMNDX.
8130 template<int size
, bool big_endian
>
8132 Target_powerpc
<size
, big_endian
>::do_tls_offset_for_local(
8133 const Relobj
* object
,
8134 unsigned int symndx
,
8135 unsigned int got_indx
) const
8137 const Powerpc_relobj
<size
, big_endian
>* ppc_object
8138 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>(object
);
8139 if (ppc_object
->local_symbol(symndx
)->is_tls_symbol())
8141 for (Got_type got_type
= GOT_TYPE_TLSGD
;
8142 got_type
<= GOT_TYPE_TPREL
;
8143 got_type
= Got_type(got_type
+ 1))
8144 if (ppc_object
->local_has_got_offset(symndx
, got_type
))
8146 unsigned int off
= ppc_object
->local_got_offset(symndx
, got_type
);
8147 if (got_type
== GOT_TYPE_TLSGD
)
8149 if (off
== got_indx
* (size
/ 8))
8151 if (got_type
== GOT_TYPE_TPREL
)
8161 // Return the offset to use for the GOT_INDX'th got entry which is
8162 // for global tls symbol GSYM.
8163 template<int size
, bool big_endian
>
8165 Target_powerpc
<size
, big_endian
>::do_tls_offset_for_global(
8167 unsigned int got_indx
) const
8169 if (gsym
->type() == elfcpp::STT_TLS
)
8171 for (Got_type got_type
= GOT_TYPE_TLSGD
;
8172 got_type
<= GOT_TYPE_TPREL
;
8173 got_type
= Got_type(got_type
+ 1))
8174 if (gsym
->has_got_offset(got_type
))
8176 unsigned int off
= gsym
->got_offset(got_type
);
8177 if (got_type
== GOT_TYPE_TLSGD
)
8179 if (off
== got_indx
* (size
/ 8))
8181 if (got_type
== GOT_TYPE_TPREL
)
8191 // The selector for powerpc object files.
8193 template<int size
, bool big_endian
>
8194 class Target_selector_powerpc
: public Target_selector
8197 Target_selector_powerpc()
8198 : Target_selector(size
== 64 ? elfcpp::EM_PPC64
: elfcpp::EM_PPC
,
8201 ? (big_endian
? "elf64-powerpc" : "elf64-powerpcle")
8202 : (big_endian
? "elf32-powerpc" : "elf32-powerpcle")),
8204 ? (big_endian
? "elf64ppc" : "elf64lppc")
8205 : (big_endian
? "elf32ppc" : "elf32lppc")))
8209 do_instantiate_target()
8210 { return new Target_powerpc
<size
, big_endian
>(); }
8213 Target_selector_powerpc
<32, true> target_selector_ppc32
;
8214 Target_selector_powerpc
<32, false> target_selector_ppc32le
;
8215 Target_selector_powerpc
<64, true> target_selector_ppc64
;
8216 Target_selector_powerpc
<64, false> target_selector_ppc64le
;
8218 // Instantiate these constants for -O0
8219 template<int size
, bool big_endian
>
8220 const int Output_data_glink
<size
, big_endian
>::pltresolve_size
;
8221 template<int size
, bool big_endian
>
8222 const typename Output_data_glink
<size
, big_endian
>::Address
8223 Output_data_glink
<size
, big_endian
>::invalid_address
;
8224 template<int size
, bool big_endian
>
8225 const typename Stub_table
<size
, big_endian
>::Address
8226 Stub_table
<size
, big_endian
>::invalid_address
;
8227 template<int size
, bool big_endian
>
8228 const typename Target_powerpc
<size
, big_endian
>::Address
8229 Target_powerpc
<size
, big_endian
>::invalid_address
;
8231 } // End anonymous namespace.