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
>* relobj
,
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 Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
963 <Powerpc_relobj
<size
, big_endian
>*>(relobj
);
964 if (ppcobj
->abiversion() == 1)
967 // For 32-bit and ELFv2, conservatively assume anything but calls to
968 // function code might be taking the address of the function.
969 return !is_branch_reloc(r_type
);
973 global_reloc_may_be_function_pointer(Symbol_table
* , Layout
* ,
975 Sized_relobj_file
<size
, big_endian
>* relobj
,
978 const elfcpp::Rela
<size
, big_endian
>& ,
985 Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
986 <Powerpc_relobj
<size
, big_endian
>*>(relobj
);
987 if (ppcobj
->abiversion() == 1)
990 return !is_branch_reloc(r_type
);
994 reloc_needs_plt_for_ifunc(Target_powerpc
<size
, big_endian
>* target
,
995 Sized_relobj_file
<size
, big_endian
>* object
,
996 unsigned int r_type
, bool report_err
);
1000 unsupported_reloc_local(Sized_relobj_file
<size
, big_endian
>*,
1001 unsigned int r_type
);
1004 unsupported_reloc_global(Sized_relobj_file
<size
, big_endian
>*,
1005 unsigned int r_type
, Symbol
*);
1008 generate_tls_call(Symbol_table
* symtab
, Layout
* layout
,
1009 Target_powerpc
* target
);
1012 check_non_pic(Relobj
*, unsigned int r_type
);
1014 // Whether we have issued an error about a non-PIC compilation.
1015 bool issued_non_pic_error_
;
1019 symval_for_branch(const Symbol_table
* symtab
, Address value
,
1020 const Sized_symbol
<size
>* gsym
,
1021 Powerpc_relobj
<size
, big_endian
>* object
,
1022 unsigned int *dest_shndx
);
1024 // The class which implements relocation.
1025 class Relocate
: protected Track_tls
1028 // Use 'at' branch hints when true, 'y' when false.
1029 // FIXME maybe: set this with an option.
1030 static const bool is_isa_v2
= true;
1036 // Do a relocation. Return false if the caller should not issue
1037 // any warnings about this relocation.
1039 relocate(const Relocate_info
<size
, big_endian
>*, Target_powerpc
*,
1040 Output_section
*, size_t relnum
,
1041 const elfcpp::Rela
<size
, big_endian
>&,
1042 unsigned int r_type
, const Sized_symbol
<size
>*,
1043 const Symbol_value
<size
>*,
1045 typename
elfcpp::Elf_types
<size
>::Elf_Addr
,
1049 class Relocate_comdat_behavior
1052 // Decide what the linker should do for relocations that refer to
1053 // discarded comdat sections.
1054 inline Comdat_behavior
1055 get(const char* name
)
1057 gold::Default_comdat_behavior default_behavior
;
1058 Comdat_behavior ret
= default_behavior
.get(name
);
1059 if (ret
== CB_WARNING
)
1062 && (strcmp(name
, ".fixup") == 0
1063 || strcmp(name
, ".got2") == 0))
1066 && (strcmp(name
, ".opd") == 0
1067 || strcmp(name
, ".toc") == 0
1068 || strcmp(name
, ".toc1") == 0))
1075 // A class which returns the size required for a relocation type,
1076 // used while scanning relocs during a relocatable link.
1077 class Relocatable_size_for_reloc
1081 get_size_for_reloc(unsigned int, Relobj
*)
1088 // Optimize the TLS relocation type based on what we know about the
1089 // symbol. IS_FINAL is true if the final address of this symbol is
1090 // known at link time.
1092 tls::Tls_optimization
1093 optimize_tls_gd(bool is_final
)
1095 // If we are generating a shared library, then we can't do anything
1097 if (parameters
->options().shared())
1098 return tls::TLSOPT_NONE
;
1101 return tls::TLSOPT_TO_IE
;
1102 return tls::TLSOPT_TO_LE
;
1105 tls::Tls_optimization
1108 if (parameters
->options().shared())
1109 return tls::TLSOPT_NONE
;
1111 return tls::TLSOPT_TO_LE
;
1114 tls::Tls_optimization
1115 optimize_tls_ie(bool is_final
)
1117 if (!is_final
|| parameters
->options().shared())
1118 return tls::TLSOPT_NONE
;
1120 return tls::TLSOPT_TO_LE
;
1125 make_glink_section(Layout
*);
1127 // Create the PLT section.
1129 make_plt_section(Symbol_table
*, Layout
*);
1132 make_iplt_section(Symbol_table
*, Layout
*);
1135 make_brlt_section(Layout
*);
1137 // Create a PLT entry for a global symbol.
1139 make_plt_entry(Symbol_table
*, Layout
*, Symbol
*);
1141 // Create a PLT entry for a local IFUNC symbol.
1143 make_local_ifunc_plt_entry(Symbol_table
*, Layout
*,
1144 Sized_relobj_file
<size
, big_endian
>*,
1148 // Create a GOT entry for local dynamic __tls_get_addr.
1150 tlsld_got_offset(Symbol_table
* symtab
, Layout
* layout
,
1151 Sized_relobj_file
<size
, big_endian
>* object
);
1154 tlsld_got_offset() const
1156 return this->tlsld_got_offset_
;
1159 // Get the dynamic reloc section, creating it if necessary.
1161 rela_dyn_section(Layout
*);
1163 // Similarly, but for ifunc symbols get the one for ifunc.
1165 rela_dyn_section(Symbol_table
*, Layout
*, bool for_ifunc
);
1167 // Copy a relocation against a global symbol.
1169 copy_reloc(Symbol_table
* symtab
, Layout
* layout
,
1170 Sized_relobj_file
<size
, big_endian
>* object
,
1171 unsigned int shndx
, Output_section
* output_section
,
1172 Symbol
* sym
, const elfcpp::Rela
<size
, big_endian
>& reloc
)
1174 this->copy_relocs_
.copy_reloc(symtab
, layout
,
1175 symtab
->get_sized_symbol
<size
>(sym
),
1176 object
, shndx
, output_section
,
1177 reloc
, this->rela_dyn_section(layout
));
1180 // Look over all the input sections, deciding where to place stubs.
1182 group_sections(Layout
*, const Task
*);
1184 // Sort output sections by address.
1185 struct Sort_sections
1188 operator()(const Output_section
* sec1
, const Output_section
* sec2
)
1189 { return sec1
->address() < sec2
->address(); }
1195 Branch_info(Powerpc_relobj
<size
, big_endian
>* ppc_object
,
1196 unsigned int data_shndx
,
1198 unsigned int r_type
,
1201 : object_(ppc_object
), shndx_(data_shndx
), offset_(r_offset
),
1202 r_type_(r_type
), r_sym_(r_sym
), addend_(addend
)
1208 // If this branch needs a plt call stub, or a long branch stub, make one.
1210 make_stub(Stub_table
<size
, big_endian
>*,
1211 Stub_table
<size
, big_endian
>*,
1212 Symbol_table
*) const;
1215 // The branch location..
1216 Powerpc_relobj
<size
, big_endian
>* object_
;
1217 unsigned int shndx_
;
1219 // ..and the branch type and destination.
1220 unsigned int r_type_
;
1221 unsigned int r_sym_
;
1225 // Information about this specific target which we pass to the
1226 // general Target structure.
1227 static Target::Target_info powerpc_info
;
1229 // The types of GOT entries needed for this platform.
1230 // These values are exposed to the ABI in an incremental link.
1231 // Do not renumber existing values without changing the version
1232 // number of the .gnu_incremental_inputs section.
1236 GOT_TYPE_TLSGD
, // double entry for @got@tlsgd
1237 GOT_TYPE_DTPREL
, // entry for @got@dtprel
1238 GOT_TYPE_TPREL
// entry for @got@tprel
1242 Output_data_got_powerpc
<size
, big_endian
>* got_
;
1243 // The PLT section. This is a container for a table of addresses,
1244 // and their relocations. Each address in the PLT has a dynamic
1245 // relocation (R_*_JMP_SLOT) and each address will have a
1246 // corresponding entry in .glink for lazy resolution of the PLT.
1247 // ppc32 initialises the PLT to point at the .glink entry, while
1248 // ppc64 leaves this to ld.so. To make a call via the PLT, the
1249 // linker adds a stub that loads the PLT entry into ctr then
1250 // branches to ctr. There may be more than one stub for each PLT
1251 // entry. DT_JMPREL points at the first PLT dynamic relocation and
1252 // DT_PLTRELSZ gives the total size of PLT dynamic relocations.
1253 Output_data_plt_powerpc
<size
, big_endian
>* plt_
;
1254 // The IPLT section. Like plt_, this is a container for a table of
1255 // addresses and their relocations, specifically for STT_GNU_IFUNC
1256 // functions that resolve locally (STT_GNU_IFUNC functions that
1257 // don't resolve locally go in PLT). Unlike plt_, these have no
1258 // entry in .glink for lazy resolution, and the relocation section
1259 // does not have a 1-1 correspondence with IPLT addresses. In fact,
1260 // the relocation section may contain relocations against
1261 // STT_GNU_IFUNC symbols at locations outside of IPLT. The
1262 // relocation section will appear at the end of other dynamic
1263 // relocations, so that ld.so applies these relocations after other
1264 // dynamic relocations. In a static executable, the relocation
1265 // section is emitted and marked with __rela_iplt_start and
1266 // __rela_iplt_end symbols.
1267 Output_data_plt_powerpc
<size
, big_endian
>* iplt_
;
1268 // Section holding long branch destinations.
1269 Output_data_brlt_powerpc
<size
, big_endian
>* brlt_section_
;
1270 // The .glink section.
1271 Output_data_glink
<size
, big_endian
>* glink_
;
1272 // The dynamic reloc section.
1273 Reloc_section
* rela_dyn_
;
1274 // Relocs saved to avoid a COPY reloc.
1275 Copy_relocs
<elfcpp::SHT_RELA
, size
, big_endian
> copy_relocs_
;
1276 // Offset of the GOT entry for local dynamic __tls_get_addr calls.
1277 unsigned int tlsld_got_offset_
;
1279 Stub_tables stub_tables_
;
1280 typedef Unordered_map
<Address
, unsigned int> Branch_lookup_table
;
1281 Branch_lookup_table branch_lookup_table_
;
1283 typedef std::vector
<Branch_info
> Branches
;
1284 Branches branch_info_
;
1286 bool plt_thread_safe_
;
1290 Target::Target_info Target_powerpc
<32, true>::powerpc_info
=
1293 true, // is_big_endian
1294 elfcpp::EM_PPC
, // machine_code
1295 false, // has_make_symbol
1296 false, // has_resolve
1297 false, // has_code_fill
1298 true, // is_default_stack_executable
1299 false, // can_icf_inline_merge_sections
1301 "/usr/lib/ld.so.1", // dynamic_linker
1302 0x10000000, // default_text_segment_address
1303 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1304 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1305 false, // isolate_execinstr
1307 elfcpp::SHN_UNDEF
, // small_common_shndx
1308 elfcpp::SHN_UNDEF
, // large_common_shndx
1309 0, // small_common_section_flags
1310 0, // large_common_section_flags
1311 NULL
, // attributes_section
1312 NULL
, // attributes_vendor
1313 "_start" // entry_symbol_name
1317 Target::Target_info Target_powerpc
<32, false>::powerpc_info
=
1320 false, // is_big_endian
1321 elfcpp::EM_PPC
, // machine_code
1322 false, // has_make_symbol
1323 false, // has_resolve
1324 false, // has_code_fill
1325 true, // is_default_stack_executable
1326 false, // can_icf_inline_merge_sections
1328 "/usr/lib/ld.so.1", // dynamic_linker
1329 0x10000000, // default_text_segment_address
1330 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1331 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1332 false, // isolate_execinstr
1334 elfcpp::SHN_UNDEF
, // small_common_shndx
1335 elfcpp::SHN_UNDEF
, // large_common_shndx
1336 0, // small_common_section_flags
1337 0, // large_common_section_flags
1338 NULL
, // attributes_section
1339 NULL
, // attributes_vendor
1340 "_start" // entry_symbol_name
1344 Target::Target_info Target_powerpc
<64, true>::powerpc_info
=
1347 true, // is_big_endian
1348 elfcpp::EM_PPC64
, // machine_code
1349 false, // has_make_symbol
1350 false, // has_resolve
1351 false, // has_code_fill
1352 true, // is_default_stack_executable
1353 false, // can_icf_inline_merge_sections
1355 "/usr/lib/ld.so.1", // dynamic_linker
1356 0x10000000, // default_text_segment_address
1357 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1358 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1359 false, // isolate_execinstr
1361 elfcpp::SHN_UNDEF
, // small_common_shndx
1362 elfcpp::SHN_UNDEF
, // large_common_shndx
1363 0, // small_common_section_flags
1364 0, // large_common_section_flags
1365 NULL
, // attributes_section
1366 NULL
, // attributes_vendor
1367 "_start" // entry_symbol_name
1371 Target::Target_info Target_powerpc
<64, false>::powerpc_info
=
1374 false, // is_big_endian
1375 elfcpp::EM_PPC64
, // machine_code
1376 false, // has_make_symbol
1377 false, // has_resolve
1378 false, // has_code_fill
1379 true, // is_default_stack_executable
1380 false, // can_icf_inline_merge_sections
1382 "/usr/lib/ld.so.1", // dynamic_linker
1383 0x10000000, // default_text_segment_address
1384 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1385 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1386 false, // isolate_execinstr
1388 elfcpp::SHN_UNDEF
, // small_common_shndx
1389 elfcpp::SHN_UNDEF
, // large_common_shndx
1390 0, // small_common_section_flags
1391 0, // large_common_section_flags
1392 NULL
, // attributes_section
1393 NULL
, // attributes_vendor
1394 "_start" // entry_symbol_name
1398 is_branch_reloc(unsigned int r_type
)
1400 return (r_type
== elfcpp::R_POWERPC_REL24
1401 || r_type
== elfcpp::R_PPC_PLTREL24
1402 || r_type
== elfcpp::R_PPC_LOCAL24PC
1403 || r_type
== elfcpp::R_POWERPC_REL14
1404 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
1405 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
1406 || r_type
== elfcpp::R_POWERPC_ADDR24
1407 || r_type
== elfcpp::R_POWERPC_ADDR14
1408 || r_type
== elfcpp::R_POWERPC_ADDR14_BRTAKEN
1409 || r_type
== elfcpp::R_POWERPC_ADDR14_BRNTAKEN
);
1412 // If INSN is an opcode that may be used with an @tls operand, return
1413 // the transformed insn for TLS optimisation, otherwise return 0. If
1414 // REG is non-zero only match an insn with RB or RA equal to REG.
1416 at_tls_transform(uint32_t insn
, unsigned int reg
)
1418 if ((insn
& (0x3f << 26)) != 31 << 26)
1422 if (reg
== 0 || ((insn
>> 11) & 0x1f) == reg
)
1423 rtra
= insn
& ((1 << 26) - (1 << 16));
1424 else if (((insn
>> 16) & 0x1f) == reg
)
1425 rtra
= (insn
& (0x1f << 21)) | ((insn
& (0x1f << 11)) << 5);
1429 if ((insn
& (0x3ff << 1)) == 266 << 1)
1432 else if ((insn
& (0x1f << 1)) == 23 << 1
1433 && ((insn
& (0x1f << 6)) < 14 << 6
1434 || ((insn
& (0x1f << 6)) >= 16 << 6
1435 && (insn
& (0x1f << 6)) < 24 << 6)))
1436 // load and store indexed -> dform
1437 insn
= (32 | ((insn
>> 6) & 0x1f)) << 26;
1438 else if ((insn
& (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
1439 // ldx, ldux, stdx, stdux -> ld, ldu, std, stdu
1440 insn
= ((58 | ((insn
>> 6) & 4)) << 26) | ((insn
>> 6) & 1);
1441 else if ((insn
& (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
1443 insn
= (58 << 26) | 2;
1451 template<int size
, bool big_endian
>
1452 class Powerpc_relocate_functions
1472 typedef Powerpc_relocate_functions
<size
, big_endian
> This
;
1473 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
1475 template<int valsize
>
1477 has_overflow_signed(Address value
)
1479 // limit = 1 << (valsize - 1) without shift count exceeding size of type
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
> (limit
<< 1) - 1;
1486 template<int valsize
>
1488 has_overflow_unsigned(Address value
)
1490 Address limit
= static_cast<Address
>(1) << ((valsize
- 1) >> 1);
1491 limit
<<= ((valsize
- 1) >> 1);
1492 limit
<<= ((valsize
- 1) - 2 * ((valsize
- 1) >> 1));
1493 return value
> (limit
<< 1) - 1;
1496 template<int valsize
>
1498 has_overflow_bitfield(Address value
)
1500 return (has_overflow_unsigned
<valsize
>(value
)
1501 && has_overflow_signed
<valsize
>(value
));
1504 template<int valsize
>
1505 static inline Status
1506 overflowed(Address value
, Overflow_check overflow
)
1508 if (overflow
== CHECK_SIGNED
)
1510 if (has_overflow_signed
<valsize
>(value
))
1511 return STATUS_OVERFLOW
;
1513 else if (overflow
== CHECK_UNSIGNED
)
1515 if (has_overflow_unsigned
<valsize
>(value
))
1516 return STATUS_OVERFLOW
;
1518 else if (overflow
== CHECK_BITFIELD
)
1520 if (has_overflow_bitfield
<valsize
>(value
))
1521 return STATUS_OVERFLOW
;
1526 // Do a simple RELA relocation
1527 template<int fieldsize
, int valsize
>
1528 static inline Status
1529 rela(unsigned char* view
, Address value
, Overflow_check overflow
)
1531 typedef typename
elfcpp::Swap
<fieldsize
, big_endian
>::Valtype Valtype
;
1532 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
1533 elfcpp::Swap
<fieldsize
, big_endian
>::writeval(wv
, value
);
1534 return overflowed
<valsize
>(value
, overflow
);
1537 template<int fieldsize
, int valsize
>
1538 static inline Status
1539 rela(unsigned char* view
,
1540 unsigned int right_shift
,
1541 typename
elfcpp::Valtype_base
<fieldsize
>::Valtype dst_mask
,
1543 Overflow_check overflow
)
1545 typedef typename
elfcpp::Swap
<fieldsize
, big_endian
>::Valtype Valtype
;
1546 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
1547 Valtype val
= elfcpp::Swap
<fieldsize
, big_endian
>::readval(wv
);
1548 Valtype reloc
= value
>> right_shift
;
1551 elfcpp::Swap
<fieldsize
, big_endian
>::writeval(wv
, val
| reloc
);
1552 return overflowed
<valsize
>(value
>> right_shift
, overflow
);
1555 // Do a simple RELA relocation, unaligned.
1556 template<int fieldsize
, int valsize
>
1557 static inline Status
1558 rela_ua(unsigned char* view
, Address value
, Overflow_check overflow
)
1560 elfcpp::Swap_unaligned
<fieldsize
, big_endian
>::writeval(view
, value
);
1561 return overflowed
<valsize
>(value
, overflow
);
1564 template<int fieldsize
, int valsize
>
1565 static inline Status
1566 rela_ua(unsigned char* view
,
1567 unsigned int right_shift
,
1568 typename
elfcpp::Valtype_base
<fieldsize
>::Valtype dst_mask
,
1570 Overflow_check overflow
)
1572 typedef typename
elfcpp::Swap_unaligned
<fieldsize
, big_endian
>::Valtype
1574 Valtype val
= elfcpp::Swap
<fieldsize
, big_endian
>::readval(view
);
1575 Valtype reloc
= value
>> right_shift
;
1578 elfcpp::Swap_unaligned
<fieldsize
, big_endian
>::writeval(view
, val
| reloc
);
1579 return overflowed
<valsize
>(value
>> right_shift
, overflow
);
1583 // R_PPC64_ADDR64: (Symbol + Addend)
1585 addr64(unsigned char* view
, Address value
)
1586 { This::template rela
<64,64>(view
, value
, CHECK_NONE
); }
1588 // R_PPC64_UADDR64: (Symbol + Addend) unaligned
1590 addr64_u(unsigned char* view
, Address value
)
1591 { This::template rela_ua
<64,64>(view
, value
, CHECK_NONE
); }
1593 // R_POWERPC_ADDR32: (Symbol + Addend)
1594 static inline Status
1595 addr32(unsigned char* view
, Address value
, Overflow_check overflow
)
1596 { return This::template rela
<32,32>(view
, value
, overflow
); }
1598 // R_POWERPC_UADDR32: (Symbol + Addend) unaligned
1599 static inline Status
1600 addr32_u(unsigned char* view
, Address value
, Overflow_check overflow
)
1601 { return This::template rela_ua
<32,32>(view
, value
, overflow
); }
1603 // R_POWERPC_ADDR24: (Symbol + Addend) & 0x3fffffc
1604 static inline Status
1605 addr24(unsigned char* view
, Address value
, Overflow_check overflow
)
1607 Status stat
= This::template rela
<32,26>(view
, 0, 0x03fffffc,
1609 if (overflow
!= CHECK_NONE
&& (value
& 3) != 0)
1610 stat
= STATUS_OVERFLOW
;
1614 // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff
1615 static inline Status
1616 addr16(unsigned char* view
, Address value
, Overflow_check overflow
)
1617 { return This::template rela
<16,16>(view
, value
, overflow
); }
1619 // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff, unaligned
1620 static inline Status
1621 addr16_u(unsigned char* view
, Address value
, Overflow_check overflow
)
1622 { return This::template rela_ua
<16,16>(view
, value
, overflow
); }
1624 // R_POWERPC_ADDR16_DS: (Symbol + Addend) & 0xfffc
1625 static inline Status
1626 addr16_ds(unsigned char* view
, Address value
, Overflow_check overflow
)
1628 Status stat
= This::template rela
<16,16>(view
, 0, 0xfffc, value
, overflow
);
1629 if (overflow
!= CHECK_NONE
&& (value
& 3) != 0)
1630 stat
= STATUS_OVERFLOW
;
1634 // R_POWERPC_ADDR16_HI: ((Symbol + Addend) >> 16) & 0xffff
1636 addr16_hi(unsigned char* view
, Address value
)
1637 { This::template rela
<16,16>(view
, 16, 0xffff, value
, CHECK_NONE
); }
1639 // R_POWERPC_ADDR16_HA: ((Symbol + Addend + 0x8000) >> 16) & 0xffff
1641 addr16_ha(unsigned char* view
, Address value
)
1642 { This::addr16_hi(view
, value
+ 0x8000); }
1644 // R_POWERPC_ADDR16_HIGHER: ((Symbol + Addend) >> 32) & 0xffff
1646 addr16_hi2(unsigned char* view
, Address value
)
1647 { This::template rela
<16,16>(view
, 32, 0xffff, value
, CHECK_NONE
); }
1649 // R_POWERPC_ADDR16_HIGHERA: ((Symbol + Addend + 0x8000) >> 32) & 0xffff
1651 addr16_ha2(unsigned char* view
, Address value
)
1652 { This::addr16_hi2(view
, value
+ 0x8000); }
1654 // R_POWERPC_ADDR16_HIGHEST: ((Symbol + Addend) >> 48) & 0xffff
1656 addr16_hi3(unsigned char* view
, Address value
)
1657 { This::template rela
<16,16>(view
, 48, 0xffff, value
, CHECK_NONE
); }
1659 // R_POWERPC_ADDR16_HIGHESTA: ((Symbol + Addend + 0x8000) >> 48) & 0xffff
1661 addr16_ha3(unsigned char* view
, Address value
)
1662 { This::addr16_hi3(view
, value
+ 0x8000); }
1664 // R_POWERPC_ADDR14: (Symbol + Addend) & 0xfffc
1665 static inline Status
1666 addr14(unsigned char* view
, Address value
, Overflow_check overflow
)
1668 Status stat
= This::template rela
<32,16>(view
, 0, 0xfffc, value
, overflow
);
1669 if (overflow
!= CHECK_NONE
&& (value
& 3) != 0)
1670 stat
= STATUS_OVERFLOW
;
1675 // Set ABI version for input and output.
1677 template<int size
, bool big_endian
>
1679 Powerpc_relobj
<size
, big_endian
>::set_abiversion(int ver
)
1681 this->e_flags_
|= ver
;
1682 if (this->abiversion() != 0)
1684 Target_powerpc
<size
, big_endian
>* target
=
1685 static_cast<Target_powerpc
<size
, big_endian
>*>(
1686 parameters
->sized_target
<size
, big_endian
>());
1687 if (target
->abiversion() == 0)
1688 target
->set_abiversion(this->abiversion());
1689 else if (target
->abiversion() != this->abiversion())
1690 gold_error(_("%s: ABI version %d is not compatible "
1691 "with ABI version %d output"),
1692 this->name().c_str(),
1693 this->abiversion(), target
->abiversion());
1698 // Stash away the index of .got2 or .opd in a relocatable object, if
1699 // such a section exists.
1701 template<int size
, bool big_endian
>
1703 Powerpc_relobj
<size
, big_endian
>::do_find_special_sections(
1704 Read_symbols_data
* sd
)
1706 const unsigned char* const pshdrs
= sd
->section_headers
->data();
1707 const unsigned char* namesu
= sd
->section_names
->data();
1708 const char* names
= reinterpret_cast<const char*>(namesu
);
1709 section_size_type names_size
= sd
->section_names_size
;
1710 const unsigned char* s
;
1712 s
= this->template find_shdr
<size
, big_endian
>(pshdrs
,
1713 size
== 32 ? ".got2" : ".opd",
1714 names
, names_size
, NULL
);
1717 unsigned int ndx
= (s
- pshdrs
) / elfcpp::Elf_sizes
<size
>::shdr_size
;
1718 this->special_
= ndx
;
1721 if (this->abiversion() == 0)
1722 this->set_abiversion(1);
1723 else if (this->abiversion() > 1)
1724 gold_error(_("%s: .opd invalid in abiv%d"),
1725 this->name().c_str(), this->abiversion());
1728 return Sized_relobj_file
<size
, big_endian
>::do_find_special_sections(sd
);
1731 // Examine .rela.opd to build info about function entry points.
1733 template<int size
, bool big_endian
>
1735 Powerpc_relobj
<size
, big_endian
>::scan_opd_relocs(
1737 const unsigned char* prelocs
,
1738 const unsigned char* plocal_syms
)
1742 typedef typename Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::Reloc
1744 const int reloc_size
1745 = Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
1746 const int sym_size
= elfcpp::Elf_sizes
<size
>::sym_size
;
1747 Address expected_off
= 0;
1748 bool regular
= true;
1749 unsigned int opd_ent_size
= 0;
1751 for (size_t i
= 0; i
< reloc_count
; ++i
, prelocs
+= reloc_size
)
1753 Reltype
reloc(prelocs
);
1754 typename
elfcpp::Elf_types
<size
>::Elf_WXword r_info
1755 = reloc
.get_r_info();
1756 unsigned int r_type
= elfcpp::elf_r_type
<size
>(r_info
);
1757 if (r_type
== elfcpp::R_PPC64_ADDR64
)
1759 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(r_info
);
1760 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
;
1763 if (r_sym
< this->local_symbol_count())
1765 typename
elfcpp::Sym
<size
, big_endian
>
1766 lsym(plocal_syms
+ r_sym
* sym_size
);
1767 shndx
= lsym
.get_st_shndx();
1768 shndx
= this->adjust_sym_shndx(r_sym
, shndx
, &is_ordinary
);
1769 value
= lsym
.get_st_value();
1772 shndx
= this->symbol_section_and_value(r_sym
, &value
,
1774 this->set_opd_ent(reloc
.get_r_offset(), shndx
,
1775 value
+ reloc
.get_r_addend());
1778 expected_off
= reloc
.get_r_offset();
1779 opd_ent_size
= expected_off
;
1781 else if (expected_off
!= reloc
.get_r_offset())
1783 expected_off
+= opd_ent_size
;
1785 else if (r_type
== elfcpp::R_PPC64_TOC
)
1787 if (expected_off
- opd_ent_size
+ 8 != reloc
.get_r_offset())
1792 gold_warning(_("%s: unexpected reloc type %u in .opd section"),
1793 this->name().c_str(), r_type
);
1797 if (reloc_count
<= 2)
1798 opd_ent_size
= this->section_size(this->opd_shndx());
1799 if (opd_ent_size
!= 24 && opd_ent_size
!= 16)
1803 gold_warning(_("%s: .opd is not a regular array of opd entries"),
1804 this->name().c_str());
1810 template<int size
, bool big_endian
>
1812 Powerpc_relobj
<size
, big_endian
>::do_read_relocs(Read_relocs_data
* rd
)
1814 Sized_relobj_file
<size
, big_endian
>::do_read_relocs(rd
);
1817 for (Read_relocs_data::Relocs_list::iterator p
= rd
->relocs
.begin();
1818 p
!= rd
->relocs
.end();
1821 if (p
->data_shndx
== this->opd_shndx())
1823 uint64_t opd_size
= this->section_size(this->opd_shndx());
1824 gold_assert(opd_size
== static_cast<size_t>(opd_size
));
1827 this->init_opd(opd_size
);
1828 this->scan_opd_relocs(p
->reloc_count
, p
->contents
->data(),
1829 rd
->local_symbols
->data());
1837 // Read the symbols then set up st_other vector.
1839 template<int size
, bool big_endian
>
1841 Powerpc_relobj
<size
, big_endian
>::do_read_symbols(Read_symbols_data
* sd
)
1843 this->base_read_symbols(sd
);
1846 const int shdr_size
= elfcpp::Elf_sizes
<size
>::shdr_size
;
1847 const unsigned char* const pshdrs
= sd
->section_headers
->data();
1848 const unsigned int loccount
= this->do_local_symbol_count();
1851 this->st_other_
.resize(loccount
);
1852 const int sym_size
= elfcpp::Elf_sizes
<size
>::sym_size
;
1853 off_t locsize
= loccount
* sym_size
;
1854 const unsigned int symtab_shndx
= this->symtab_shndx();
1855 const unsigned char *psymtab
= pshdrs
+ symtab_shndx
* shdr_size
;
1856 typename
elfcpp::Shdr
<size
, big_endian
> shdr(psymtab
);
1857 const unsigned char* psyms
= this->get_view(shdr
.get_sh_offset(),
1858 locsize
, true, false);
1860 for (unsigned int i
= 1; i
< loccount
; ++i
, psyms
+= sym_size
)
1862 elfcpp::Sym
<size
, big_endian
> sym(psyms
);
1863 unsigned char st_other
= sym
.get_st_other();
1864 this->st_other_
[i
] = st_other
;
1865 if ((st_other
& elfcpp::STO_PPC64_LOCAL_MASK
) != 0)
1867 if (this->abiversion() == 0)
1868 this->set_abiversion(2);
1869 else if (this->abiversion() < 2)
1870 gold_error(_("%s: local symbol %d has invalid st_other"
1871 " for ABI version 1"),
1872 this->name().c_str(), i
);
1879 template<int size
, bool big_endian
>
1881 Powerpc_dynobj
<size
, big_endian
>::set_abiversion(int ver
)
1883 this->e_flags_
|= ver
;
1884 if (this->abiversion() != 0)
1886 Target_powerpc
<size
, big_endian
>* target
=
1887 static_cast<Target_powerpc
<size
, big_endian
>*>(
1888 parameters
->sized_target
<size
, big_endian
>());
1889 if (target
->abiversion() == 0)
1890 target
->set_abiversion(this->abiversion());
1891 else if (target
->abiversion() != this->abiversion())
1892 gold_error(_("%s: ABI version %d is not compatible "
1893 "with ABI version %d output"),
1894 this->name().c_str(),
1895 this->abiversion(), target
->abiversion());
1900 // Call Sized_dynobj::base_read_symbols to read the symbols then
1901 // read .opd from a dynamic object, filling in opd_ent_ vector,
1903 template<int size
, bool big_endian
>
1905 Powerpc_dynobj
<size
, big_endian
>::do_read_symbols(Read_symbols_data
* sd
)
1907 this->base_read_symbols(sd
);
1910 const int shdr_size
= elfcpp::Elf_sizes
<size
>::shdr_size
;
1911 const unsigned char* const pshdrs
= sd
->section_headers
->data();
1912 const unsigned char* namesu
= sd
->section_names
->data();
1913 const char* names
= reinterpret_cast<const char*>(namesu
);
1914 const unsigned char* s
= NULL
;
1915 const unsigned char* opd
;
1916 section_size_type opd_size
;
1918 // Find and read .opd section.
1921 s
= this->template find_shdr
<size
, big_endian
>(pshdrs
, ".opd", names
,
1922 sd
->section_names_size
,
1927 typename
elfcpp::Shdr
<size
, big_endian
> shdr(s
);
1928 if (shdr
.get_sh_type() == elfcpp::SHT_PROGBITS
1929 && (shdr
.get_sh_flags() & elfcpp::SHF_ALLOC
) != 0)
1931 if (this->abiversion() == 0)
1932 this->set_abiversion(1);
1933 else if (this->abiversion() > 1)
1934 gold_error(_("%s: .opd invalid in abiv%d"),
1935 this->name().c_str(), this->abiversion());
1937 this->opd_shndx_
= (s
- pshdrs
) / shdr_size
;
1938 this->opd_address_
= shdr
.get_sh_addr();
1939 opd_size
= convert_to_section_size_type(shdr
.get_sh_size());
1940 opd
= this->get_view(shdr
.get_sh_offset(), opd_size
,
1946 // Build set of executable sections.
1947 // Using a set is probably overkill. There is likely to be only
1948 // a few executable sections, typically .init, .text and .fini,
1949 // and they are generally grouped together.
1950 typedef std::set
<Sec_info
> Exec_sections
;
1951 Exec_sections exec_sections
;
1953 for (unsigned int i
= 1; i
< this->shnum(); ++i
, s
+= shdr_size
)
1955 typename
elfcpp::Shdr
<size
, big_endian
> shdr(s
);
1956 if (shdr
.get_sh_type() == elfcpp::SHT_PROGBITS
1957 && ((shdr
.get_sh_flags()
1958 & (elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
))
1959 == (elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
))
1960 && shdr
.get_sh_size() != 0)
1962 exec_sections
.insert(Sec_info(shdr
.get_sh_addr(),
1963 shdr
.get_sh_size(), i
));
1966 if (exec_sections
.empty())
1969 // Look over the OPD entries. This is complicated by the fact
1970 // that some binaries will use two-word entries while others
1971 // will use the standard three-word entries. In most cases
1972 // the third word (the environment pointer for languages like
1973 // Pascal) is unused and will be zero. If the third word is
1974 // used it should not be pointing into executable sections,
1976 this->init_opd(opd_size
);
1977 for (const unsigned char* p
= opd
; p
< opd
+ opd_size
; p
+= 8)
1979 typedef typename
elfcpp::Swap
<64, big_endian
>::Valtype Valtype
;
1980 const Valtype
* valp
= reinterpret_cast<const Valtype
*>(p
);
1981 Valtype val
= elfcpp::Swap
<64, big_endian
>::readval(valp
);
1983 // Chances are that this is the third word of an OPD entry.
1985 typename
Exec_sections::const_iterator e
1986 = exec_sections
.upper_bound(Sec_info(val
, 0, 0));
1987 if (e
!= exec_sections
.begin())
1990 if (e
->start
<= val
&& val
< e
->start
+ e
->len
)
1992 // We have an address in an executable section.
1993 // VAL ought to be the function entry, set it up.
1994 this->set_opd_ent(p
- opd
, e
->shndx
, val
);
1995 // Skip second word of OPD entry, the TOC pointer.
1999 // If we didn't match any executable sections, we likely
2000 // have a non-zero third word in the OPD entry.
2005 // Set up some symbols.
2007 template<int size
, bool big_endian
>
2009 Target_powerpc
<size
, big_endian
>::do_define_standard_symbols(
2010 Symbol_table
* symtab
,
2015 // Define _GLOBAL_OFFSET_TABLE_ to ensure it isn't seen as
2016 // undefined when scanning relocs (and thus requires
2017 // non-relative dynamic relocs). The proper value will be
2019 Symbol
*gotsym
= symtab
->lookup("_GLOBAL_OFFSET_TABLE_", NULL
);
2020 if (gotsym
!= NULL
&& gotsym
->is_undefined())
2022 Target_powerpc
<size
, big_endian
>* target
=
2023 static_cast<Target_powerpc
<size
, big_endian
>*>(
2024 parameters
->sized_target
<size
, big_endian
>());
2025 Output_data_got_powerpc
<size
, big_endian
>* got
2026 = target
->got_section(symtab
, layout
);
2027 symtab
->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL
,
2028 Symbol_table::PREDEFINED
,
2032 elfcpp::STV_HIDDEN
, 0,
2036 // Define _SDA_BASE_ at the start of the .sdata section + 32768.
2037 Symbol
*sdasym
= symtab
->lookup("_SDA_BASE_", NULL
);
2038 if (sdasym
!= NULL
&& sdasym
->is_undefined())
2040 Output_data_space
* sdata
= new Output_data_space(4, "** sdata");
2042 = layout
->add_output_section_data(".sdata", 0,
2044 | elfcpp::SHF_WRITE
,
2045 sdata
, ORDER_SMALL_DATA
, false);
2046 symtab
->define_in_output_data("_SDA_BASE_", NULL
,
2047 Symbol_table::PREDEFINED
,
2048 os
, 32768, 0, elfcpp::STT_OBJECT
,
2049 elfcpp::STB_LOCAL
, elfcpp::STV_HIDDEN
,
2055 // Define .TOC. as for 32-bit _GLOBAL_OFFSET_TABLE_
2056 Symbol
*gotsym
= symtab
->lookup(".TOC.", NULL
);
2057 if (gotsym
!= NULL
&& gotsym
->is_undefined())
2059 Target_powerpc
<size
, big_endian
>* target
=
2060 static_cast<Target_powerpc
<size
, big_endian
>*>(
2061 parameters
->sized_target
<size
, big_endian
>());
2062 Output_data_got_powerpc
<size
, big_endian
>* got
2063 = target
->got_section(symtab
, layout
);
2064 symtab
->define_in_output_data(".TOC.", NULL
,
2065 Symbol_table::PREDEFINED
,
2069 elfcpp::STV_HIDDEN
, 0,
2075 // Set up PowerPC target specific relobj.
2077 template<int size
, bool big_endian
>
2079 Target_powerpc
<size
, big_endian
>::do_make_elf_object(
2080 const std::string
& name
,
2081 Input_file
* input_file
,
2082 off_t offset
, const elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
2084 int et
= ehdr
.get_e_type();
2085 // ET_EXEC files are valid input for --just-symbols/-R,
2086 // and we treat them as relocatable objects.
2087 if (et
== elfcpp::ET_REL
2088 || (et
== elfcpp::ET_EXEC
&& input_file
->just_symbols()))
2090 Powerpc_relobj
<size
, big_endian
>* obj
=
2091 new Powerpc_relobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
);
2095 else if (et
== elfcpp::ET_DYN
)
2097 Powerpc_dynobj
<size
, big_endian
>* obj
=
2098 new Powerpc_dynobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
);
2104 gold_error(_("%s: unsupported ELF file type %d"), name
.c_str(), et
);
2109 template<int size
, bool big_endian
>
2110 class Output_data_got_powerpc
: public Output_data_got
<size
, big_endian
>
2113 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Valtype
;
2114 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true, size
, big_endian
> Rela_dyn
;
2116 Output_data_got_powerpc(Symbol_table
* symtab
, Layout
* layout
)
2117 : Output_data_got
<size
, big_endian
>(),
2118 symtab_(symtab
), layout_(layout
),
2119 header_ent_cnt_(size
== 32 ? 3 : 1),
2120 header_index_(size
== 32 ? 0x2000 : 0)
2123 // Override all the Output_data_got methods we use so as to first call
2126 add_global(Symbol
* gsym
, unsigned int got_type
)
2128 this->reserve_ent();
2129 return Output_data_got
<size
, big_endian
>::add_global(gsym
, got_type
);
2133 add_global_plt(Symbol
* gsym
, unsigned int got_type
)
2135 this->reserve_ent();
2136 return Output_data_got
<size
, big_endian
>::add_global_plt(gsym
, got_type
);
2140 add_global_tls(Symbol
* gsym
, unsigned int got_type
)
2141 { return this->add_global_plt(gsym
, got_type
); }
2144 add_global_with_rel(Symbol
* gsym
, unsigned int got_type
,
2145 Output_data_reloc_generic
* rel_dyn
, unsigned int r_type
)
2147 this->reserve_ent();
2148 Output_data_got
<size
, big_endian
>::
2149 add_global_with_rel(gsym
, got_type
, rel_dyn
, r_type
);
2153 add_global_pair_with_rel(Symbol
* gsym
, unsigned int got_type
,
2154 Output_data_reloc_generic
* rel_dyn
,
2155 unsigned int r_type_1
, unsigned int r_type_2
)
2157 this->reserve_ent(2);
2158 Output_data_got
<size
, big_endian
>::
2159 add_global_pair_with_rel(gsym
, got_type
, rel_dyn
, r_type_1
, r_type_2
);
2163 add_local(Relobj
* object
, unsigned int sym_index
, unsigned int got_type
)
2165 this->reserve_ent();
2166 return Output_data_got
<size
, big_endian
>::add_local(object
, sym_index
,
2171 add_local_plt(Relobj
* object
, unsigned int sym_index
, unsigned int got_type
)
2173 this->reserve_ent();
2174 return Output_data_got
<size
, big_endian
>::add_local_plt(object
, sym_index
,
2179 add_local_tls(Relobj
* object
, unsigned int sym_index
, unsigned int got_type
)
2180 { return this->add_local_plt(object
, sym_index
, got_type
); }
2183 add_local_tls_pair(Relobj
* object
, unsigned int sym_index
,
2184 unsigned int got_type
,
2185 Output_data_reloc_generic
* rel_dyn
,
2186 unsigned int r_type
)
2188 this->reserve_ent(2);
2189 Output_data_got
<size
, big_endian
>::
2190 add_local_tls_pair(object
, sym_index
, got_type
, rel_dyn
, r_type
);
2194 add_constant(Valtype constant
)
2196 this->reserve_ent();
2197 return Output_data_got
<size
, big_endian
>::add_constant(constant
);
2201 add_constant_pair(Valtype c1
, Valtype c2
)
2203 this->reserve_ent(2);
2204 return Output_data_got
<size
, big_endian
>::add_constant_pair(c1
, c2
);
2207 // Offset of _GLOBAL_OFFSET_TABLE_.
2211 return this->got_offset(this->header_index_
);
2214 // Offset of base used to access the GOT/TOC.
2215 // The got/toc pointer reg will be set to this value.
2217 got_base_offset(const Powerpc_relobj
<size
, big_endian
>* object
) const
2220 return this->g_o_t();
2222 return (this->output_section()->address()
2223 + object
->toc_base_offset()
2227 // Ensure our GOT has a header.
2229 set_final_data_size()
2231 if (this->header_ent_cnt_
!= 0)
2232 this->make_header();
2233 Output_data_got
<size
, big_endian
>::set_final_data_size();
2236 // First word of GOT header needs some values that are not
2237 // handled by Output_data_got so poke them in here.
2238 // For 32-bit, address of .dynamic, for 64-bit, address of TOCbase.
2240 do_write(Output_file
* of
)
2243 if (size
== 32 && this->layout_
->dynamic_data() != NULL
)
2244 val
= this->layout_
->dynamic_section()->address();
2246 val
= this->output_section()->address() + 0x8000;
2247 this->replace_constant(this->header_index_
, val
);
2248 Output_data_got
<size
, big_endian
>::do_write(of
);
2253 reserve_ent(unsigned int cnt
= 1)
2255 if (this->header_ent_cnt_
== 0)
2257 if (this->num_entries() + cnt
> this->header_index_
)
2258 this->make_header();
2264 this->header_ent_cnt_
= 0;
2265 this->header_index_
= this->num_entries();
2268 Output_data_got
<size
, big_endian
>::add_constant(0);
2269 Output_data_got
<size
, big_endian
>::add_constant(0);
2270 Output_data_got
<size
, big_endian
>::add_constant(0);
2272 // Define _GLOBAL_OFFSET_TABLE_ at the header
2273 Symbol
*gotsym
= this->symtab_
->lookup("_GLOBAL_OFFSET_TABLE_", NULL
);
2276 Sized_symbol
<size
>* sym
= static_cast<Sized_symbol
<size
>*>(gotsym
);
2277 sym
->set_value(this->g_o_t());
2280 this->symtab_
->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL
,
2281 Symbol_table::PREDEFINED
,
2282 this, this->g_o_t(), 0,
2285 elfcpp::STV_HIDDEN
, 0,
2289 Output_data_got
<size
, big_endian
>::add_constant(0);
2292 // Stashed pointers.
2293 Symbol_table
* symtab_
;
2297 unsigned int header_ent_cnt_
;
2298 // GOT header index.
2299 unsigned int header_index_
;
2302 // Get the GOT section, creating it if necessary.
2304 template<int size
, bool big_endian
>
2305 Output_data_got_powerpc
<size
, big_endian
>*
2306 Target_powerpc
<size
, big_endian
>::got_section(Symbol_table
* symtab
,
2309 if (this->got_
== NULL
)
2311 gold_assert(symtab
!= NULL
&& layout
!= NULL
);
2314 = new Output_data_got_powerpc
<size
, big_endian
>(symtab
, layout
);
2316 layout
->add_output_section_data(".got", elfcpp::SHT_PROGBITS
,
2317 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
2318 this->got_
, ORDER_DATA
, false);
2324 // Get the dynamic reloc section, creating it if necessary.
2326 template<int size
, bool big_endian
>
2327 typename Target_powerpc
<size
, big_endian
>::Reloc_section
*
2328 Target_powerpc
<size
, big_endian
>::rela_dyn_section(Layout
* layout
)
2330 if (this->rela_dyn_
== NULL
)
2332 gold_assert(layout
!= NULL
);
2333 this->rela_dyn_
= new Reloc_section(parameters
->options().combreloc());
2334 layout
->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA
,
2335 elfcpp::SHF_ALLOC
, this->rela_dyn_
,
2336 ORDER_DYNAMIC_RELOCS
, false);
2338 return this->rela_dyn_
;
2341 // Similarly, but for ifunc symbols get the one for ifunc.
2343 template<int size
, bool big_endian
>
2344 typename Target_powerpc
<size
, big_endian
>::Reloc_section
*
2345 Target_powerpc
<size
, big_endian
>::rela_dyn_section(Symbol_table
* symtab
,
2350 return this->rela_dyn_section(layout
);
2352 if (this->iplt_
== NULL
)
2353 this->make_iplt_section(symtab
, layout
);
2354 return this->iplt_
->rel_plt();
2360 // Determine the stub group size. The group size is the absolute
2361 // value of the parameter --stub-group-size. If --stub-group-size
2362 // is passed a negative value, we restrict stubs to be always before
2363 // the stubbed branches.
2364 Stub_control(int32_t size
)
2365 : state_(NO_GROUP
), stub_group_size_(abs(size
)),
2366 stub14_group_size_(abs(size
) >> 10),
2367 stubs_always_before_branch_(size
< 0), suppress_size_errors_(false),
2368 group_end_addr_(0), owner_(NULL
), output_section_(NULL
)
2370 if (stub_group_size_
== 1)
2373 if (stubs_always_before_branch_
)
2375 stub_group_size_
= 0x1e00000;
2376 stub14_group_size_
= 0x7800;
2380 stub_group_size_
= 0x1c00000;
2381 stub14_group_size_
= 0x7000;
2383 suppress_size_errors_
= true;
2387 // Return true iff input section can be handled by current stub
2390 can_add_to_stub_group(Output_section
* o
,
2391 const Output_section::Input_section
* i
,
2394 const Output_section::Input_section
*
2400 { return output_section_
; }
2403 set_output_and_owner(Output_section
* o
,
2404 const Output_section::Input_section
* i
)
2406 this->output_section_
= o
;
2414 FINDING_STUB_SECTION
,
2419 uint32_t stub_group_size_
;
2420 uint32_t stub14_group_size_
;
2421 bool stubs_always_before_branch_
;
2422 bool suppress_size_errors_
;
2423 uint64_t group_end_addr_
;
2424 const Output_section::Input_section
* owner_
;
2425 Output_section
* output_section_
;
2428 // Return true iff input section can be handled by current stub
2432 Stub_control::can_add_to_stub_group(Output_section
* o
,
2433 const Output_section::Input_section
* i
,
2437 = has14
? this->stub14_group_size_
: this->stub_group_size_
;
2438 bool whole_sec
= o
->order() == ORDER_INIT
|| o
->order() == ORDER_FINI
;
2440 uint64_t start_addr
= o
->address();
2443 // .init and .fini sections are pasted together to form a single
2444 // function. We can't be adding stubs in the middle of the function.
2445 this_size
= o
->data_size();
2448 start_addr
+= i
->relobj()->output_section_offset(i
->shndx());
2449 this_size
= i
->data_size();
2451 uint64_t end_addr
= start_addr
+ this_size
;
2452 bool toobig
= this_size
> group_size
;
2454 if (toobig
&& !this->suppress_size_errors_
)
2455 gold_warning(_("%s:%s exceeds group size"),
2456 i
->relobj()->name().c_str(),
2457 i
->relobj()->section_name(i
->shndx()).c_str());
2459 if (this->state_
!= HAS_STUB_SECTION
2460 && (!whole_sec
|| this->output_section_
!= o
)
2461 && (this->state_
== NO_GROUP
2462 || this->group_end_addr_
- end_addr
< group_size
))
2465 this->output_section_
= o
;
2468 if (this->state_
== NO_GROUP
)
2470 this->state_
= FINDING_STUB_SECTION
;
2471 this->group_end_addr_
= end_addr
;
2473 else if (this->group_end_addr_
- start_addr
< group_size
)
2475 // Adding this section would make the group larger than GROUP_SIZE.
2476 else if (this->state_
== FINDING_STUB_SECTION
2477 && !this->stubs_always_before_branch_
2480 // But wait, there's more! Input sections up to GROUP_SIZE
2481 // bytes before the stub table can be handled by it too.
2482 this->state_
= HAS_STUB_SECTION
;
2483 this->group_end_addr_
= end_addr
;
2487 this->state_
= NO_GROUP
;
2493 // Look over all the input sections, deciding where to place stubs.
2495 template<int size
, bool big_endian
>
2497 Target_powerpc
<size
, big_endian
>::group_sections(Layout
* layout
,
2500 Stub_control
stub_control(parameters
->options().stub_group_size());
2502 // Group input sections and insert stub table
2503 Stub_table
<size
, big_endian
>* stub_table
= NULL
;
2504 Layout::Section_list section_list
;
2505 layout
->get_executable_sections(§ion_list
);
2506 std::stable_sort(section_list
.begin(), section_list
.end(), Sort_sections());
2507 for (Layout::Section_list::reverse_iterator o
= section_list
.rbegin();
2508 o
!= section_list
.rend();
2511 typedef Output_section::Input_section_list Input_section_list
;
2512 for (Input_section_list::const_reverse_iterator i
2513 = (*o
)->input_sections().rbegin();
2514 i
!= (*o
)->input_sections().rend();
2517 if (i
->is_input_section())
2519 Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
2520 <Powerpc_relobj
<size
, big_endian
>*>(i
->relobj());
2521 bool has14
= ppcobj
->has_14bit_branch(i
->shndx());
2522 if (!stub_control
.can_add_to_stub_group(*o
, &*i
, has14
))
2524 stub_table
->init(stub_control
.owner(),
2525 stub_control
.output_section());
2526 stub_control
.set_output_and_owner(*o
, &*i
);
2529 if (stub_table
== NULL
)
2530 stub_table
= this->new_stub_table();
2531 ppcobj
->set_stub_table(i
->shndx(), stub_table
);
2535 if (stub_table
!= NULL
)
2537 const Output_section::Input_section
* i
= stub_control
.owner();
2538 if (!i
->is_input_section())
2540 // Corner case. A new stub group was made for the first
2541 // section (last one looked at here) for some reason, but
2542 // the first section is already being used as the owner for
2543 // a stub table for following sections. Force it into that
2545 gold_assert(this->stub_tables_
.size() >= 2);
2546 this->stub_tables_
.pop_back();
2548 Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
2549 <Powerpc_relobj
<size
, big_endian
>*>(i
->relobj());
2550 ppcobj
->set_stub_table(i
->shndx(), this->stub_tables_
.back());
2553 stub_table
->init(i
, stub_control
.output_section());
2557 // If this branch needs a plt call stub, or a long branch stub, make one.
2559 template<int size
, bool big_endian
>
2561 Target_powerpc
<size
, big_endian
>::Branch_info::make_stub(
2562 Stub_table
<size
, big_endian
>* stub_table
,
2563 Stub_table
<size
, big_endian
>* ifunc_stub_table
,
2564 Symbol_table
* symtab
) const
2566 Symbol
* sym
= this->object_
->global_symbol(this->r_sym_
);
2567 if (sym
!= NULL
&& sym
->is_forwarder())
2568 sym
= symtab
->resolve_forwards(sym
);
2569 const Sized_symbol
<size
>* gsym
= static_cast<const Sized_symbol
<size
>*>(sym
);
2570 Target_powerpc
<size
, big_endian
>* target
=
2571 static_cast<Target_powerpc
<size
, big_endian
>*>(
2572 parameters
->sized_target
<size
, big_endian
>());
2574 ? gsym
->use_plt_offset(Scan::get_reference_flags(this->r_type_
, target
))
2575 : this->object_
->local_has_plt_offset(this->r_sym_
))
2579 && target
->abiversion() >= 2
2580 && !parameters
->options().output_is_position_independent()
2581 && !is_branch_reloc(this->r_type_
))
2582 target
->glink_section()->add_global_entry(gsym
);
2585 if (stub_table
== NULL
)
2586 stub_table
= this->object_
->stub_table(this->shndx_
);
2587 if (stub_table
== NULL
)
2589 // This is a ref from a data section to an ifunc symbol.
2590 stub_table
= ifunc_stub_table
;
2592 gold_assert(stub_table
!= NULL
);
2594 stub_table
->add_plt_call_entry(this->object_
, gsym
,
2595 this->r_type_
, this->addend_
);
2597 stub_table
->add_plt_call_entry(this->object_
, this->r_sym_
,
2598 this->r_type_
, this->addend_
);
2603 unsigned long max_branch_offset
;
2604 if (this->r_type_
== elfcpp::R_POWERPC_REL14
2605 || this->r_type_
== elfcpp::R_POWERPC_REL14_BRTAKEN
2606 || this->r_type_
== elfcpp::R_POWERPC_REL14_BRNTAKEN
)
2607 max_branch_offset
= 1 << 15;
2608 else if (this->r_type_
== elfcpp::R_POWERPC_REL24
2609 || this->r_type_
== elfcpp::R_PPC_PLTREL24
2610 || this->r_type_
== elfcpp::R_PPC_LOCAL24PC
)
2611 max_branch_offset
= 1 << 25;
2614 Address from
= this->object_
->get_output_section_offset(this->shndx_
);
2615 gold_assert(from
!= invalid_address
);
2616 from
+= (this->object_
->output_section(this->shndx_
)->address()
2621 switch (gsym
->source())
2623 case Symbol::FROM_OBJECT
:
2625 Object
* symobj
= gsym
->object();
2626 if (symobj
->is_dynamic()
2627 || symobj
->pluginobj() != NULL
)
2630 unsigned int shndx
= gsym
->shndx(&is_ordinary
);
2631 if (shndx
== elfcpp::SHN_UNDEF
)
2636 case Symbol::IS_UNDEFINED
:
2642 Symbol_table::Compute_final_value_status status
;
2643 to
= symtab
->compute_final_value
<size
>(gsym
, &status
);
2644 if (status
!= Symbol_table::CFVS_OK
)
2647 to
+= this->object_
->ppc64_local_entry_offset(gsym
);
2651 const Symbol_value
<size
>* psymval
2652 = this->object_
->local_symbol(this->r_sym_
);
2653 Symbol_value
<size
> symval
;
2654 typedef Sized_relobj_file
<size
, big_endian
> ObjType
;
2655 typename
ObjType::Compute_final_local_value_status status
2656 = this->object_
->compute_final_local_value(this->r_sym_
, psymval
,
2658 if (status
!= ObjType::CFLV_OK
2659 || !symval
.has_output_value())
2661 to
= symval
.value(this->object_
, 0);
2663 to
+= this->object_
->ppc64_local_entry_offset(this->r_sym_
);
2665 to
+= this->addend_
;
2666 if (stub_table
== NULL
)
2667 stub_table
= this->object_
->stub_table(this->shndx_
);
2668 if (size
== 64 && target
->abiversion() < 2)
2670 unsigned int dest_shndx
;
2671 to
= target
->symval_for_branch(symtab
, to
, gsym
,
2672 this->object_
, &dest_shndx
);
2674 Address delta
= to
- from
;
2675 if (delta
+ max_branch_offset
>= 2 * max_branch_offset
)
2677 if (stub_table
== NULL
)
2679 gold_warning(_("%s:%s: branch in non-executable section,"
2680 " no long branch stub for you"),
2681 this->object_
->name().c_str(),
2682 this->object_
->section_name(this->shndx_
).c_str());
2685 stub_table
->add_long_branch_entry(this->object_
, to
);
2690 // Relaxation hook. This is where we do stub generation.
2692 template<int size
, bool big_endian
>
2694 Target_powerpc
<size
, big_endian
>::do_relax(int pass
,
2695 const Input_objects
*,
2696 Symbol_table
* symtab
,
2700 unsigned int prev_brlt_size
= 0;
2704 = this->abiversion() < 2 && parameters
->options().plt_thread_safe();
2706 && this->abiversion() < 2
2708 && !parameters
->options().user_set_plt_thread_safe())
2710 static const char* const thread_starter
[] =
2714 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
2716 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
2717 "mq_notify", "create_timer",
2722 "GOMP_parallel_start",
2723 "GOMP_parallel_loop_static",
2724 "GOMP_parallel_loop_static_start",
2725 "GOMP_parallel_loop_dynamic",
2726 "GOMP_parallel_loop_dynamic_start",
2727 "GOMP_parallel_loop_guided",
2728 "GOMP_parallel_loop_guided_start",
2729 "GOMP_parallel_loop_runtime",
2730 "GOMP_parallel_loop_runtime_start",
2731 "GOMP_parallel_sections",
2732 "GOMP_parallel_sections_start",
2737 if (parameters
->options().shared())
2741 for (unsigned int i
= 0;
2742 i
< sizeof(thread_starter
) / sizeof(thread_starter
[0]);
2745 Symbol
* sym
= symtab
->lookup(thread_starter
[i
], NULL
);
2746 thread_safe
= (sym
!= NULL
2748 && sym
->in_real_elf());
2754 this->plt_thread_safe_
= thread_safe
;
2755 this->group_sections(layout
, task
);
2758 // We need address of stub tables valid for make_stub.
2759 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
2760 p
!= this->stub_tables_
.end();
2763 const Powerpc_relobj
<size
, big_endian
>* object
2764 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>((*p
)->relobj());
2765 Address off
= object
->get_output_section_offset((*p
)->shndx());
2766 gold_assert(off
!= invalid_address
);
2767 Output_section
* os
= (*p
)->output_section();
2768 (*p
)->set_address_and_size(os
, off
);
2773 // Clear plt call stubs, long branch stubs and branch lookup table.
2774 prev_brlt_size
= this->branch_lookup_table_
.size();
2775 this->branch_lookup_table_
.clear();
2776 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
2777 p
!= this->stub_tables_
.end();
2780 (*p
)->clear_stubs();
2784 // Build all the stubs.
2785 Stub_table
<size
, big_endian
>* ifunc_stub_table
2786 = this->stub_tables_
.size() == 0 ? NULL
: this->stub_tables_
[0];
2787 Stub_table
<size
, big_endian
>* one_stub_table
2788 = this->stub_tables_
.size() != 1 ? NULL
: ifunc_stub_table
;
2789 for (typename
Branches::const_iterator b
= this->branch_info_
.begin();
2790 b
!= this->branch_info_
.end();
2793 b
->make_stub(one_stub_table
, ifunc_stub_table
, symtab
);
2796 // Did anything change size?
2797 unsigned int num_huge_branches
= this->branch_lookup_table_
.size();
2798 bool again
= num_huge_branches
!= prev_brlt_size
;
2799 if (size
== 64 && num_huge_branches
!= 0)
2800 this->make_brlt_section(layout
);
2801 if (size
== 64 && again
)
2802 this->brlt_section_
->set_current_size(num_huge_branches
);
2804 typedef Unordered_set
<Output_section
*> Output_sections
;
2805 Output_sections os_need_update
;
2806 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
2807 p
!= this->stub_tables_
.end();
2810 if ((*p
)->size_update())
2813 (*p
)->add_eh_frame(layout
);
2814 os_need_update
.insert((*p
)->output_section());
2818 // Set output section offsets for all input sections in an output
2819 // section that just changed size. Anything past the stubs will
2821 for (typename
Output_sections::iterator p
= os_need_update
.begin();
2822 p
!= os_need_update
.end();
2825 Output_section
* os
= *p
;
2827 typedef Output_section::Input_section_list Input_section_list
;
2828 for (Input_section_list::const_iterator i
= os
->input_sections().begin();
2829 i
!= os
->input_sections().end();
2832 off
= align_address(off
, i
->addralign());
2833 if (i
->is_input_section() || i
->is_relaxed_input_section())
2834 i
->relobj()->set_section_offset(i
->shndx(), off
);
2835 if (i
->is_relaxed_input_section())
2837 Stub_table
<size
, big_endian
>* stub_table
2838 = static_cast<Stub_table
<size
, big_endian
>*>(
2839 i
->relaxed_input_section());
2840 off
+= stub_table
->set_address_and_size(os
, off
);
2843 off
+= i
->data_size();
2845 // If .branch_lt is part of this output section, then we have
2846 // just done the offset adjustment.
2847 os
->clear_section_offsets_need_adjustment();
2852 && num_huge_branches
!= 0
2853 && parameters
->options().output_is_position_independent())
2855 // Fill in the BRLT relocs.
2856 this->brlt_section_
->reset_brlt_sizes();
2857 for (typename
Branch_lookup_table::const_iterator p
2858 = this->branch_lookup_table_
.begin();
2859 p
!= this->branch_lookup_table_
.end();
2862 this->brlt_section_
->add_reloc(p
->first
, p
->second
);
2864 this->brlt_section_
->finalize_brlt_sizes();
2869 template<int size
, bool big_endian
>
2871 Target_powerpc
<size
, big_endian
>::do_plt_fde_location(const Output_data
* plt
,
2872 unsigned char* oview
,
2876 uint64_t address
= plt
->address();
2877 off_t len
= plt
->data_size();
2879 if (plt
== this->glink_
)
2881 // See Output_data_glink::do_write() for glink contents.
2884 gold_assert(parameters
->doing_static_link());
2885 // Static linking may need stubs, to support ifunc and long
2886 // branches. We need to create an output section for
2887 // .eh_frame early in the link process, to have a place to
2888 // attach stub .eh_frame info. We also need to have
2889 // registered a CIE that matches the stub CIE. Both of
2890 // these requirements are satisfied by creating an FDE and
2891 // CIE for .glink, even though static linking will leave
2892 // .glink zero length.
2893 // ??? Hopefully generating an FDE with a zero address range
2894 // won't confuse anything that consumes .eh_frame info.
2896 else if (size
== 64)
2898 // There is one word before __glink_PLTresolve
2902 else if (parameters
->options().output_is_position_independent())
2904 // There are two FDEs for a position independent glink.
2905 // The first covers the branch table, the second
2906 // __glink_PLTresolve at the end of glink.
2907 off_t resolve_size
= this->glink_
->pltresolve_size
;
2908 if (oview
[9] == elfcpp::DW_CFA_nop
)
2909 len
-= resolve_size
;
2912 address
+= len
- resolve_size
;
2919 // Must be a stub table.
2920 const Stub_table
<size
, big_endian
>* stub_table
2921 = static_cast<const Stub_table
<size
, big_endian
>*>(plt
);
2922 uint64_t stub_address
= stub_table
->stub_address();
2923 len
-= stub_address
- address
;
2924 address
= stub_address
;
2927 *paddress
= address
;
2931 // A class to handle the PLT data.
2933 template<int size
, bool big_endian
>
2934 class Output_data_plt_powerpc
: public Output_section_data_build
2937 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true,
2938 size
, big_endian
> Reloc_section
;
2940 Output_data_plt_powerpc(Target_powerpc
<size
, big_endian
>* targ
,
2941 Reloc_section
* plt_rel
,
2943 : Output_section_data_build(size
== 32 ? 4 : 8),
2949 // Add an entry to the PLT.
2954 add_ifunc_entry(Symbol
*);
2957 add_local_ifunc_entry(Sized_relobj_file
<size
, big_endian
>*, unsigned int);
2959 // Return the .rela.plt section data.
2966 // Return the number of PLT entries.
2970 if (this->current_data_size() == 0)
2972 return ((this->current_data_size() - this->first_plt_entry_offset())
2973 / this->plt_entry_size());
2978 do_adjust_output_section(Output_section
* os
)
2983 // Write to a map file.
2985 do_print_to_mapfile(Mapfile
* mapfile
) const
2986 { mapfile
->print_output_data(this, this->name_
); }
2989 // Return the offset of the first non-reserved PLT entry.
2991 first_plt_entry_offset() const
2993 // IPLT has no reserved entry.
2994 if (this->name_
[3] == 'I')
2996 return this->targ_
->first_plt_entry_offset();
2999 // Return the size of each PLT entry.
3001 plt_entry_size() const
3003 return this->targ_
->plt_entry_size();
3006 // Write out the PLT data.
3008 do_write(Output_file
*);
3010 // The reloc section.
3011 Reloc_section
* rel_
;
3012 // Allows access to .glink for do_write.
3013 Target_powerpc
<size
, big_endian
>* targ_
;
3014 // What to report in map file.
3018 // Add an entry to the PLT.
3020 template<int size
, bool big_endian
>
3022 Output_data_plt_powerpc
<size
, big_endian
>::add_entry(Symbol
* gsym
)
3024 if (!gsym
->has_plt_offset())
3026 section_size_type off
= this->current_data_size();
3028 off
+= this->first_plt_entry_offset();
3029 gsym
->set_plt_offset(off
);
3030 gsym
->set_needs_dynsym_entry();
3031 unsigned int dynrel
= elfcpp::R_POWERPC_JMP_SLOT
;
3032 this->rel_
->add_global(gsym
, dynrel
, this, off
, 0);
3033 off
+= this->plt_entry_size();
3034 this->set_current_data_size(off
);
3038 // Add an entry for a global ifunc symbol that resolves locally, to the IPLT.
3040 template<int size
, bool big_endian
>
3042 Output_data_plt_powerpc
<size
, big_endian
>::add_ifunc_entry(Symbol
* gsym
)
3044 if (!gsym
->has_plt_offset())
3046 section_size_type off
= this->current_data_size();
3047 gsym
->set_plt_offset(off
);
3048 unsigned int dynrel
= elfcpp::R_POWERPC_IRELATIVE
;
3049 if (size
== 64 && this->targ_
->abiversion() < 2)
3050 dynrel
= elfcpp::R_PPC64_JMP_IREL
;
3051 this->rel_
->add_symbolless_global_addend(gsym
, dynrel
, this, off
, 0);
3052 off
+= this->plt_entry_size();
3053 this->set_current_data_size(off
);
3057 // Add an entry for a local ifunc symbol to the IPLT.
3059 template<int size
, bool big_endian
>
3061 Output_data_plt_powerpc
<size
, big_endian
>::add_local_ifunc_entry(
3062 Sized_relobj_file
<size
, big_endian
>* relobj
,
3063 unsigned int local_sym_index
)
3065 if (!relobj
->local_has_plt_offset(local_sym_index
))
3067 section_size_type off
= this->current_data_size();
3068 relobj
->set_local_plt_offset(local_sym_index
, off
);
3069 unsigned int dynrel
= elfcpp::R_POWERPC_IRELATIVE
;
3070 if (size
== 64 && this->targ_
->abiversion() < 2)
3071 dynrel
= elfcpp::R_PPC64_JMP_IREL
;
3072 this->rel_
->add_symbolless_local_addend(relobj
, local_sym_index
, dynrel
,
3074 off
+= this->plt_entry_size();
3075 this->set_current_data_size(off
);
3079 static const uint32_t add_0_11_11
= 0x7c0b5a14;
3080 static const uint32_t add_2_2_11
= 0x7c425a14;
3081 static const uint32_t add_3_3_2
= 0x7c631214;
3082 static const uint32_t add_3_3_13
= 0x7c636a14;
3083 static const uint32_t add_11_0_11
= 0x7d605a14;
3084 static const uint32_t add_11_2_11
= 0x7d625a14;
3085 static const uint32_t add_11_11_2
= 0x7d6b1214;
3086 static const uint32_t addi_0_12
= 0x380c0000;
3087 static const uint32_t addi_2_2
= 0x38420000;
3088 static const uint32_t addi_3_3
= 0x38630000;
3089 static const uint32_t addi_11_11
= 0x396b0000;
3090 static const uint32_t addi_12_12
= 0x398c0000;
3091 static const uint32_t addis_0_2
= 0x3c020000;
3092 static const uint32_t addis_0_13
= 0x3c0d0000;
3093 static const uint32_t addis_3_2
= 0x3c620000;
3094 static const uint32_t addis_3_13
= 0x3c6d0000;
3095 static const uint32_t addis_11_2
= 0x3d620000;
3096 static const uint32_t addis_11_11
= 0x3d6b0000;
3097 static const uint32_t addis_11_30
= 0x3d7e0000;
3098 static const uint32_t addis_12_2
= 0x3d820000;
3099 static const uint32_t addis_12_12
= 0x3d8c0000;
3100 static const uint32_t b
= 0x48000000;
3101 static const uint32_t bcl_20_31
= 0x429f0005;
3102 static const uint32_t bctr
= 0x4e800420;
3103 static const uint32_t blr
= 0x4e800020;
3104 static const uint32_t bnectr_p4
= 0x4ce20420;
3105 static const uint32_t cmpldi_2_0
= 0x28220000;
3106 static const uint32_t cror_15_15_15
= 0x4def7b82;
3107 static const uint32_t cror_31_31_31
= 0x4ffffb82;
3108 static const uint32_t ld_0_1
= 0xe8010000;
3109 static const uint32_t ld_0_12
= 0xe80c0000;
3110 static const uint32_t ld_2_1
= 0xe8410000;
3111 static const uint32_t ld_2_2
= 0xe8420000;
3112 static const uint32_t ld_2_11
= 0xe84b0000;
3113 static const uint32_t ld_11_2
= 0xe9620000;
3114 static const uint32_t ld_11_11
= 0xe96b0000;
3115 static const uint32_t ld_12_2
= 0xe9820000;
3116 static const uint32_t ld_12_11
= 0xe98b0000;
3117 static const uint32_t ld_12_12
= 0xe98c0000;
3118 static const uint32_t lfd_0_1
= 0xc8010000;
3119 static const uint32_t li_0_0
= 0x38000000;
3120 static const uint32_t li_12_0
= 0x39800000;
3121 static const uint32_t lis_0_0
= 0x3c000000;
3122 static const uint32_t lis_11
= 0x3d600000;
3123 static const uint32_t lis_12
= 0x3d800000;
3124 static const uint32_t lvx_0_12_0
= 0x7c0c00ce;
3125 static const uint32_t lwz_0_12
= 0x800c0000;
3126 static const uint32_t lwz_11_11
= 0x816b0000;
3127 static const uint32_t lwz_11_30
= 0x817e0000;
3128 static const uint32_t lwz_12_12
= 0x818c0000;
3129 static const uint32_t lwzu_0_12
= 0x840c0000;
3130 static const uint32_t mflr_0
= 0x7c0802a6;
3131 static const uint32_t mflr_11
= 0x7d6802a6;
3132 static const uint32_t mflr_12
= 0x7d8802a6;
3133 static const uint32_t mtctr_0
= 0x7c0903a6;
3134 static const uint32_t mtctr_11
= 0x7d6903a6;
3135 static const uint32_t mtctr_12
= 0x7d8903a6;
3136 static const uint32_t mtlr_0
= 0x7c0803a6;
3137 static const uint32_t mtlr_12
= 0x7d8803a6;
3138 static const uint32_t nop
= 0x60000000;
3139 static const uint32_t ori_0_0_0
= 0x60000000;
3140 static const uint32_t srdi_0_0_2
= 0x7800f082;
3141 static const uint32_t std_0_1
= 0xf8010000;
3142 static const uint32_t std_0_12
= 0xf80c0000;
3143 static const uint32_t std_2_1
= 0xf8410000;
3144 static const uint32_t stfd_0_1
= 0xd8010000;
3145 static const uint32_t stvx_0_12_0
= 0x7c0c01ce;
3146 static const uint32_t sub_11_11_12
= 0x7d6c5850;
3147 static const uint32_t sub_12_12_11
= 0x7d8b6050;
3148 static const uint32_t xor_2_12_12
= 0x7d826278;
3149 static const uint32_t xor_11_12_12
= 0x7d8b6278;
3151 // Write out the PLT.
3153 template<int size
, bool big_endian
>
3155 Output_data_plt_powerpc
<size
, big_endian
>::do_write(Output_file
* of
)
3157 if (size
== 32 && this->name_
[3] != 'I')
3159 const section_size_type offset
= this->offset();
3160 const section_size_type oview_size
3161 = convert_to_section_size_type(this->data_size());
3162 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
3163 unsigned char* pov
= oview
;
3164 unsigned char* endpov
= oview
+ oview_size
;
3166 // The address of the .glink branch table
3167 const Output_data_glink
<size
, big_endian
>* glink
3168 = this->targ_
->glink_section();
3169 elfcpp::Elf_types
<32>::Elf_Addr branch_tab
= glink
->address();
3171 while (pov
< endpov
)
3173 elfcpp::Swap
<32, big_endian
>::writeval(pov
, branch_tab
);
3178 of
->write_output_view(offset
, oview_size
, oview
);
3182 // Create the PLT section.
3184 template<int size
, bool big_endian
>
3186 Target_powerpc
<size
, big_endian
>::make_plt_section(Symbol_table
* symtab
,
3189 if (this->plt_
== NULL
)
3191 if (this->got_
== NULL
)
3192 this->got_section(symtab
, layout
);
3194 if (this->glink_
== NULL
)
3195 make_glink_section(layout
);
3197 // Ensure that .rela.dyn always appears before .rela.plt This is
3198 // necessary due to how, on PowerPC and some other targets, .rela.dyn
3199 // needs to include .rela.plt in its range.
3200 this->rela_dyn_section(layout
);
3202 Reloc_section
* plt_rel
= new Reloc_section(false);
3203 layout
->add_output_section_data(".rela.plt", elfcpp::SHT_RELA
,
3204 elfcpp::SHF_ALLOC
, plt_rel
,
3205 ORDER_DYNAMIC_PLT_RELOCS
, false);
3207 = new Output_data_plt_powerpc
<size
, big_endian
>(this, plt_rel
,
3209 layout
->add_output_section_data(".plt",
3211 ? elfcpp::SHT_PROGBITS
3212 : elfcpp::SHT_NOBITS
),
3213 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
3222 // Create the IPLT section.
3224 template<int size
, bool big_endian
>
3226 Target_powerpc
<size
, big_endian
>::make_iplt_section(Symbol_table
* symtab
,
3229 if (this->iplt_
== NULL
)
3231 this->make_plt_section(symtab
, layout
);
3233 Reloc_section
* iplt_rel
= new Reloc_section(false);
3234 this->rela_dyn_
->output_section()->add_output_section_data(iplt_rel
);
3236 = new Output_data_plt_powerpc
<size
, big_endian
>(this, iplt_rel
,
3238 this->plt_
->output_section()->add_output_section_data(this->iplt_
);
3242 // A section for huge long branch addresses, similar to plt section.
3244 template<int size
, bool big_endian
>
3245 class Output_data_brlt_powerpc
: public Output_section_data_build
3248 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
3249 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true,
3250 size
, big_endian
> Reloc_section
;
3252 Output_data_brlt_powerpc(Target_powerpc
<size
, big_endian
>* targ
,
3253 Reloc_section
* brlt_rel
)
3254 : Output_section_data_build(size
== 32 ? 4 : 8),
3262 this->reset_data_size();
3263 this->rel_
->reset_data_size();
3267 finalize_brlt_sizes()
3269 this->finalize_data_size();
3270 this->rel_
->finalize_data_size();
3273 // Add a reloc for an entry in the BRLT.
3275 add_reloc(Address to
, unsigned int off
)
3276 { this->rel_
->add_relative(elfcpp::R_POWERPC_RELATIVE
, this, off
, to
); }
3278 // Update section and reloc section size.
3280 set_current_size(unsigned int num_branches
)
3282 this->reset_address_and_file_offset();
3283 this->set_current_data_size(num_branches
* 16);
3284 this->finalize_data_size();
3285 Output_section
* os
= this->output_section();
3286 os
->set_section_offsets_need_adjustment();
3287 if (this->rel_
!= NULL
)
3289 unsigned int reloc_size
3290 = Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
3291 this->rel_
->reset_address_and_file_offset();
3292 this->rel_
->set_current_data_size(num_branches
* reloc_size
);
3293 this->rel_
->finalize_data_size();
3294 Output_section
* os
= this->rel_
->output_section();
3295 os
->set_section_offsets_need_adjustment();
3301 do_adjust_output_section(Output_section
* os
)
3306 // Write to a map file.
3308 do_print_to_mapfile(Mapfile
* mapfile
) const
3309 { mapfile
->print_output_data(this, "** BRLT"); }
3312 // Write out the BRLT data.
3314 do_write(Output_file
*);
3316 // The reloc section.
3317 Reloc_section
* rel_
;
3318 Target_powerpc
<size
, big_endian
>* targ_
;
3321 // Make the branch lookup table section.
3323 template<int size
, bool big_endian
>
3325 Target_powerpc
<size
, big_endian
>::make_brlt_section(Layout
* layout
)
3327 if (size
== 64 && this->brlt_section_
== NULL
)
3329 Reloc_section
* brlt_rel
= NULL
;
3330 bool is_pic
= parameters
->options().output_is_position_independent();
3333 // When PIC we can't fill in .branch_lt (like .plt it can be
3334 // a bss style section) but must initialise at runtime via
3335 // dynamic relocats.
3336 this->rela_dyn_section(layout
);
3337 brlt_rel
= new Reloc_section(false);
3338 this->rela_dyn_
->output_section()->add_output_section_data(brlt_rel
);
3341 = new Output_data_brlt_powerpc
<size
, big_endian
>(this, brlt_rel
);
3342 if (this->plt_
&& is_pic
)
3343 this->plt_
->output_section()
3344 ->add_output_section_data(this->brlt_section_
);
3346 layout
->add_output_section_data(".branch_lt",
3347 (is_pic
? elfcpp::SHT_NOBITS
3348 : elfcpp::SHT_PROGBITS
),
3349 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
3350 this->brlt_section_
,
3351 (is_pic
? ORDER_SMALL_BSS
3352 : ORDER_SMALL_DATA
),
3357 // Write out .branch_lt when non-PIC.
3359 template<int size
, bool big_endian
>
3361 Output_data_brlt_powerpc
<size
, big_endian
>::do_write(Output_file
* of
)
3363 if (size
== 64 && !parameters
->options().output_is_position_independent())
3365 const section_size_type offset
= this->offset();
3366 const section_size_type oview_size
3367 = convert_to_section_size_type(this->data_size());
3368 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
3370 this->targ_
->write_branch_lookup_table(oview
);
3371 of
->write_output_view(offset
, oview_size
, oview
);
3375 static inline uint32_t
3381 static inline uint32_t
3387 static inline uint32_t
3390 return hi(a
+ 0x8000);
3396 static const unsigned char eh_frame_cie
[12];
3400 const unsigned char Eh_cie
<size
>::eh_frame_cie
[] =
3403 'z', 'R', 0, // Augmentation string.
3404 4, // Code alignment.
3405 0x80 - size
/ 8 , // Data alignment.
3407 1, // Augmentation size.
3408 (elfcpp::DW_EH_PE_pcrel
3409 | elfcpp::DW_EH_PE_sdata4
), // FDE encoding.
3410 elfcpp::DW_CFA_def_cfa
, 1, 0 // def_cfa: r1 offset 0.
3413 // Describe __glink_PLTresolve use of LR, 64-bit version ABIv1.
3414 static const unsigned char glink_eh_frame_fde_64v1
[] =
3416 0, 0, 0, 0, // Replaced with offset to .glink.
3417 0, 0, 0, 0, // Replaced with size of .glink.
3418 0, // Augmentation size.
3419 elfcpp::DW_CFA_advance_loc
+ 1,
3420 elfcpp::DW_CFA_register
, 65, 12,
3421 elfcpp::DW_CFA_advance_loc
+ 4,
3422 elfcpp::DW_CFA_restore_extended
, 65
3425 // Describe __glink_PLTresolve use of LR, 64-bit version ABIv2.
3426 static const unsigned char glink_eh_frame_fde_64v2
[] =
3428 0, 0, 0, 0, // Replaced with offset to .glink.
3429 0, 0, 0, 0, // Replaced with size of .glink.
3430 0, // Augmentation size.
3431 elfcpp::DW_CFA_advance_loc
+ 1,
3432 elfcpp::DW_CFA_register
, 65, 0,
3433 elfcpp::DW_CFA_advance_loc
+ 4,
3434 elfcpp::DW_CFA_restore_extended
, 65
3437 // Describe __glink_PLTresolve use of LR, 32-bit version.
3438 static const unsigned char glink_eh_frame_fde_32
[] =
3440 0, 0, 0, 0, // Replaced with offset to .glink.
3441 0, 0, 0, 0, // Replaced with size of .glink.
3442 0, // Augmentation size.
3443 elfcpp::DW_CFA_advance_loc
+ 2,
3444 elfcpp::DW_CFA_register
, 65, 0,
3445 elfcpp::DW_CFA_advance_loc
+ 4,
3446 elfcpp::DW_CFA_restore_extended
, 65
3449 static const unsigned char default_fde
[] =
3451 0, 0, 0, 0, // Replaced with offset to stubs.
3452 0, 0, 0, 0, // Replaced with size of stubs.
3453 0, // Augmentation size.
3454 elfcpp::DW_CFA_nop
, // Pad.
3459 template<bool big_endian
>
3461 write_insn(unsigned char* p
, uint32_t v
)
3463 elfcpp::Swap
<32, big_endian
>::writeval(p
, v
);
3466 // Stub_table holds information about plt and long branch stubs.
3467 // Stubs are built in an area following some input section determined
3468 // by group_sections(). This input section is converted to a relaxed
3469 // input section allowing it to be resized to accommodate the stubs
3471 template<int size
, bool big_endian
>
3472 class Stub_table
: public Output_relaxed_input_section
3475 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
3476 static const Address invalid_address
= static_cast<Address
>(0) - 1;
3478 Stub_table(Target_powerpc
<size
, big_endian
>* targ
)
3479 : Output_relaxed_input_section(NULL
, 0, 0),
3480 targ_(targ
), plt_call_stubs_(), long_branch_stubs_(),
3481 orig_data_size_(0), plt_size_(0), last_plt_size_(0),
3482 branch_size_(0), last_branch_size_(0), eh_frame_added_(false)
3485 // Delayed Output_relaxed_input_section init.
3487 init(const Output_section::Input_section
*, Output_section
*);
3489 // Add a plt call stub.
3491 add_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3497 add_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3502 // Find a given plt call stub.
3504 find_plt_call_entry(const Symbol
*) const;
3507 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3508 unsigned int) const;
3511 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3517 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3522 // Add a long branch stub.
3524 add_long_branch_entry(const Powerpc_relobj
<size
, big_endian
>*, Address
);
3527 find_long_branch_entry(const Powerpc_relobj
<size
, big_endian
>*,
3533 this->plt_call_stubs_
.clear();
3534 this->plt_size_
= 0;
3535 this->long_branch_stubs_
.clear();
3536 this->branch_size_
= 0;
3540 set_address_and_size(const Output_section
* os
, Address off
)
3542 Address start_off
= off
;
3543 off
+= this->orig_data_size_
;
3544 Address my_size
= this->plt_size_
+ this->branch_size_
;
3546 off
= align_address(off
, this->stub_align());
3547 // Include original section size and alignment padding in size
3548 my_size
+= off
- start_off
;
3549 this->reset_address_and_file_offset();
3550 this->set_current_data_size(my_size
);
3551 this->set_address_and_file_offset(os
->address() + start_off
,
3552 os
->offset() + start_off
);
3557 stub_address() const
3559 return align_address(this->address() + this->orig_data_size_
,
3560 this->stub_align());
3566 return align_address(this->offset() + this->orig_data_size_
,
3567 this->stub_align());
3572 { return this->plt_size_
; }
3577 Output_section
* os
= this->output_section();
3578 if (os
->addralign() < this->stub_align())
3580 os
->set_addralign(this->stub_align());
3581 // FIXME: get rid of the insane checkpointing.
3582 // We can't increase alignment of the input section to which
3583 // stubs are attached; The input section may be .init which
3584 // is pasted together with other .init sections to form a
3585 // function. Aligning might insert zero padding resulting in
3586 // sigill. However we do need to increase alignment of the
3587 // output section so that the align_address() on offset in
3588 // set_address_and_size() adds the same padding as the
3589 // align_address() on address in stub_address().
3590 // What's more, we need this alignment for the layout done in
3591 // relaxation_loop_body() so that the output section starts at
3592 // a suitably aligned address.
3593 os
->checkpoint_set_addralign(this->stub_align());
3595 if (this->last_plt_size_
!= this->plt_size_
3596 || this->last_branch_size_
!= this->branch_size_
)
3598 this->last_plt_size_
= this->plt_size_
;
3599 this->last_branch_size_
= this->branch_size_
;
3605 // Add .eh_frame info for this stub section. Unlike other linker
3606 // generated .eh_frame this is added late in the link, because we
3607 // only want the .eh_frame info if this particular stub section is
3610 add_eh_frame(Layout
* layout
)
3612 if (!this->eh_frame_added_
)
3614 if (!parameters
->options().ld_generated_unwind_info())
3617 // Since we add stub .eh_frame info late, it must be placed
3618 // after all other linker generated .eh_frame info so that
3619 // merge mapping need not be updated for input sections.
3620 // There is no provision to use a different CIE to that used
3622 if (!this->targ_
->has_glink())
3625 layout
->add_eh_frame_for_plt(this,
3626 Eh_cie
<size
>::eh_frame_cie
,
3627 sizeof (Eh_cie
<size
>::eh_frame_cie
),
3629 sizeof (default_fde
));
3630 this->eh_frame_added_
= true;
3634 Target_powerpc
<size
, big_endian
>*
3640 class Plt_stub_ent_hash
;
3641 typedef Unordered_map
<Plt_stub_ent
, unsigned int,
3642 Plt_stub_ent_hash
> Plt_stub_entries
;
3644 // Alignment of stub section.
3650 unsigned int min_align
= 32;
3651 unsigned int user_align
= 1 << parameters
->options().plt_align();
3652 return std::max(user_align
, min_align
);
3655 // Return the plt offset for the given call stub.
3657 plt_off(typename
Plt_stub_entries::const_iterator p
, bool* is_iplt
) const
3659 const Symbol
* gsym
= p
->first
.sym_
;
3662 *is_iplt
= (gsym
->type() == elfcpp::STT_GNU_IFUNC
3663 && gsym
->can_use_relative_reloc(false));
3664 return gsym
->plt_offset();
3669 const Sized_relobj_file
<size
, big_endian
>* relobj
= p
->first
.object_
;
3670 unsigned int local_sym_index
= p
->first
.locsym_
;
3671 return relobj
->local_plt_offset(local_sym_index
);
3675 // Size of a given plt call stub.
3677 plt_call_size(typename
Plt_stub_entries::const_iterator p
) const
3683 Address plt_addr
= this->plt_off(p
, &is_iplt
);
3685 plt_addr
+= this->targ_
->iplt_section()->address();
3687 plt_addr
+= this->targ_
->plt_section()->address();
3688 Address got_addr
= this->targ_
->got_section()->output_section()->address();
3689 const Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
3690 <const Powerpc_relobj
<size
, big_endian
>*>(p
->first
.object_
);
3691 got_addr
+= ppcobj
->toc_base_offset();
3692 Address off
= plt_addr
- got_addr
;
3693 unsigned int bytes
= 4 * 4 + 4 * (ha(off
) != 0);
3694 if (this->targ_
->abiversion() < 2)
3696 bool static_chain
= parameters
->options().plt_static_chain();
3697 bool thread_safe
= this->targ_
->plt_thread_safe();
3701 + 4 * (ha(off
+ 8 + 8 * static_chain
) != ha(off
)));
3703 unsigned int align
= 1 << parameters
->options().plt_align();
3705 bytes
= (bytes
+ align
- 1) & -align
;
3709 // Return long branch stub size.
3711 branch_stub_size(Address to
)
3714 = this->stub_address() + this->last_plt_size_
+ this->branch_size_
;
3715 if (to
- loc
+ (1 << 25) < 2 << 25)
3717 if (size
== 64 || !parameters
->options().output_is_position_independent())
3724 do_write(Output_file
*);
3726 // Plt call stub keys.
3730 Plt_stub_ent(const Symbol
* sym
)
3731 : sym_(sym
), object_(0), addend_(0), locsym_(0)
3734 Plt_stub_ent(const Sized_relobj_file
<size
, big_endian
>* object
,
3735 unsigned int locsym_index
)
3736 : sym_(NULL
), object_(object
), addend_(0), locsym_(locsym_index
)
3739 Plt_stub_ent(const Sized_relobj_file
<size
, big_endian
>* object
,
3741 unsigned int r_type
,
3743 : sym_(sym
), object_(0), addend_(0), locsym_(0)
3746 this->addend_
= addend
;
3747 else if (parameters
->options().output_is_position_independent()
3748 && r_type
== elfcpp::R_PPC_PLTREL24
)
3750 this->addend_
= addend
;
3751 if (this->addend_
>= 32768)
3752 this->object_
= object
;
3756 Plt_stub_ent(const Sized_relobj_file
<size
, big_endian
>* object
,
3757 unsigned int locsym_index
,
3758 unsigned int r_type
,
3760 : sym_(NULL
), object_(object
), addend_(0), locsym_(locsym_index
)
3763 this->addend_
= addend
;
3764 else if (parameters
->options().output_is_position_independent()
3765 && r_type
== elfcpp::R_PPC_PLTREL24
)
3766 this->addend_
= addend
;
3769 bool operator==(const Plt_stub_ent
& that
) const
3771 return (this->sym_
== that
.sym_
3772 && this->object_
== that
.object_
3773 && this->addend_
== that
.addend_
3774 && this->locsym_
== that
.locsym_
);
3778 const Sized_relobj_file
<size
, big_endian
>* object_
;
3779 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend_
;
3780 unsigned int locsym_
;
3783 class Plt_stub_ent_hash
3786 size_t operator()(const Plt_stub_ent
& ent
) const
3788 return (reinterpret_cast<uintptr_t>(ent
.sym_
)
3789 ^ reinterpret_cast<uintptr_t>(ent
.object_
)
3795 // Long branch stub keys.
3796 class Branch_stub_ent
3799 Branch_stub_ent(const Powerpc_relobj
<size
, big_endian
>* obj
, Address to
)
3800 : dest_(to
), toc_base_off_(0)
3803 toc_base_off_
= obj
->toc_base_offset();
3806 bool operator==(const Branch_stub_ent
& that
) const
3808 return (this->dest_
== that
.dest_
3810 || this->toc_base_off_
== that
.toc_base_off_
));
3814 unsigned int toc_base_off_
;
3817 class Branch_stub_ent_hash
3820 size_t operator()(const Branch_stub_ent
& ent
) const
3821 { return ent
.dest_
^ ent
.toc_base_off_
; }
3824 // In a sane world this would be a global.
3825 Target_powerpc
<size
, big_endian
>* targ_
;
3826 // Map sym/object/addend to stub offset.
3827 Plt_stub_entries plt_call_stubs_
;
3828 // Map destination address to stub offset.
3829 typedef Unordered_map
<Branch_stub_ent
, unsigned int,
3830 Branch_stub_ent_hash
> Branch_stub_entries
;
3831 Branch_stub_entries long_branch_stubs_
;
3832 // size of input section
3833 section_size_type orig_data_size_
;
3835 section_size_type plt_size_
, last_plt_size_
, branch_size_
, last_branch_size_
;
3836 // Whether .eh_frame info has been created for this stub section.
3837 bool eh_frame_added_
;
3840 // Make a new stub table, and record.
3842 template<int size
, bool big_endian
>
3843 Stub_table
<size
, big_endian
>*
3844 Target_powerpc
<size
, big_endian
>::new_stub_table()
3846 Stub_table
<size
, big_endian
>* stub_table
3847 = new Stub_table
<size
, big_endian
>(this);
3848 this->stub_tables_
.push_back(stub_table
);
3852 // Delayed stub table initialisation, because we create the stub table
3853 // before we know to which section it will be attached.
3855 template<int size
, bool big_endian
>
3857 Stub_table
<size
, big_endian
>::init(
3858 const Output_section::Input_section
* owner
,
3859 Output_section
* output_section
)
3861 this->set_relobj(owner
->relobj());
3862 this->set_shndx(owner
->shndx());
3863 this->set_addralign(this->relobj()->section_addralign(this->shndx()));
3864 this->set_output_section(output_section
);
3865 this->orig_data_size_
= owner
->current_data_size();
3867 std::vector
<Output_relaxed_input_section
*> new_relaxed
;
3868 new_relaxed
.push_back(this);
3869 output_section
->convert_input_sections_to_relaxed_sections(new_relaxed
);
3872 // Add a plt call stub, if we do not already have one for this
3873 // sym/object/addend combo.
3875 template<int size
, bool big_endian
>
3877 Stub_table
<size
, big_endian
>::add_plt_call_entry(
3878 const Sized_relobj_file
<size
, big_endian
>* object
,
3880 unsigned int r_type
,
3883 Plt_stub_ent
ent(object
, gsym
, r_type
, addend
);
3884 unsigned int off
= this->plt_size_
;
3885 std::pair
<typename
Plt_stub_entries::iterator
, bool> p
3886 = this->plt_call_stubs_
.insert(std::make_pair(ent
, off
));
3888 this->plt_size_
= off
+ this->plt_call_size(p
.first
);
3891 template<int size
, bool big_endian
>
3893 Stub_table
<size
, big_endian
>::add_plt_call_entry(
3894 const Sized_relobj_file
<size
, big_endian
>* object
,
3895 unsigned int locsym_index
,
3896 unsigned int r_type
,
3899 Plt_stub_ent
ent(object
, locsym_index
, r_type
, addend
);
3900 unsigned int off
= this->plt_size_
;
3901 std::pair
<typename
Plt_stub_entries::iterator
, bool> p
3902 = this->plt_call_stubs_
.insert(std::make_pair(ent
, off
));
3904 this->plt_size_
= off
+ this->plt_call_size(p
.first
);
3907 // Find a plt call stub.
3909 template<int size
, bool big_endian
>
3910 typename Stub_table
<size
, big_endian
>::Address
3911 Stub_table
<size
, big_endian
>::find_plt_call_entry(
3912 const Sized_relobj_file
<size
, big_endian
>* object
,
3914 unsigned int r_type
,
3915 Address addend
) const
3917 Plt_stub_ent
ent(object
, gsym
, r_type
, addend
);
3918 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
3919 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
3922 template<int size
, bool big_endian
>
3923 typename Stub_table
<size
, big_endian
>::Address
3924 Stub_table
<size
, big_endian
>::find_plt_call_entry(const Symbol
* gsym
) const
3926 Plt_stub_ent
ent(gsym
);
3927 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
3928 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
3931 template<int size
, bool big_endian
>
3932 typename Stub_table
<size
, big_endian
>::Address
3933 Stub_table
<size
, big_endian
>::find_plt_call_entry(
3934 const Sized_relobj_file
<size
, big_endian
>* object
,
3935 unsigned int locsym_index
,
3936 unsigned int r_type
,
3937 Address addend
) const
3939 Plt_stub_ent
ent(object
, locsym_index
, r_type
, addend
);
3940 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
3941 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
3944 template<int size
, bool big_endian
>
3945 typename Stub_table
<size
, big_endian
>::Address
3946 Stub_table
<size
, big_endian
>::find_plt_call_entry(
3947 const Sized_relobj_file
<size
, big_endian
>* object
,
3948 unsigned int locsym_index
) const
3950 Plt_stub_ent
ent(object
, locsym_index
);
3951 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
3952 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
3955 // Add a long branch stub if we don't already have one to given
3958 template<int size
, bool big_endian
>
3960 Stub_table
<size
, big_endian
>::add_long_branch_entry(
3961 const Powerpc_relobj
<size
, big_endian
>* object
,
3964 Branch_stub_ent
ent(object
, to
);
3965 Address off
= this->branch_size_
;
3966 if (this->long_branch_stubs_
.insert(std::make_pair(ent
, off
)).second
)
3968 unsigned int stub_size
= this->branch_stub_size(to
);
3969 this->branch_size_
= off
+ stub_size
;
3970 if (size
== 64 && stub_size
!= 4)
3971 this->targ_
->add_branch_lookup_table(to
);
3975 // Find long branch stub.
3977 template<int size
, bool big_endian
>
3978 typename Stub_table
<size
, big_endian
>::Address
3979 Stub_table
<size
, big_endian
>::find_long_branch_entry(
3980 const Powerpc_relobj
<size
, big_endian
>* object
,
3983 Branch_stub_ent
ent(object
, to
);
3984 typename
Branch_stub_entries::const_iterator p
3985 = this->long_branch_stubs_
.find(ent
);
3986 return p
== this->long_branch_stubs_
.end() ? invalid_address
: p
->second
;
3989 // A class to handle .glink.
3991 template<int size
, bool big_endian
>
3992 class Output_data_glink
: public Output_section_data
3995 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
3996 static const Address invalid_address
= static_cast<Address
>(0) - 1;
3997 static const int pltresolve_size
= 16*4;
3999 Output_data_glink(Target_powerpc
<size
, big_endian
>* targ
)
4000 : Output_section_data(16), targ_(targ
), global_entry_stubs_(),
4001 end_branch_table_(), ge_size_(0)
4005 add_eh_frame(Layout
* layout
);
4008 add_global_entry(const Symbol
*);
4011 find_global_entry(const Symbol
*) const;
4014 global_entry_address() const
4016 gold_assert(this->is_data_size_valid());
4017 unsigned int global_entry_off
= (this->end_branch_table_
+ 15) & -16;
4018 return this->address() + global_entry_off
;
4022 // Write to a map file.
4024 do_print_to_mapfile(Mapfile
* mapfile
) const
4025 { mapfile
->print_output_data(this, _("** glink")); }
4029 set_final_data_size();
4033 do_write(Output_file
*);
4035 // Allows access to .got and .plt for do_write.
4036 Target_powerpc
<size
, big_endian
>* targ_
;
4038 // Map sym to stub offset.
4039 typedef Unordered_map
<const Symbol
*, unsigned int> Global_entry_stub_entries
;
4040 Global_entry_stub_entries global_entry_stubs_
;
4042 unsigned int end_branch_table_
, ge_size_
;
4045 template<int size
, bool big_endian
>
4047 Output_data_glink
<size
, big_endian
>::add_eh_frame(Layout
* layout
)
4049 if (!parameters
->options().ld_generated_unwind_info())
4054 if (this->targ_
->abiversion() < 2)
4055 layout
->add_eh_frame_for_plt(this,
4056 Eh_cie
<64>::eh_frame_cie
,
4057 sizeof (Eh_cie
<64>::eh_frame_cie
),
4058 glink_eh_frame_fde_64v1
,
4059 sizeof (glink_eh_frame_fde_64v1
));
4061 layout
->add_eh_frame_for_plt(this,
4062 Eh_cie
<64>::eh_frame_cie
,
4063 sizeof (Eh_cie
<64>::eh_frame_cie
),
4064 glink_eh_frame_fde_64v2
,
4065 sizeof (glink_eh_frame_fde_64v2
));
4069 // 32-bit .glink can use the default since the CIE return
4070 // address reg, LR, is valid.
4071 layout
->add_eh_frame_for_plt(this,
4072 Eh_cie
<32>::eh_frame_cie
,
4073 sizeof (Eh_cie
<32>::eh_frame_cie
),
4075 sizeof (default_fde
));
4076 // Except where LR is used in a PIC __glink_PLTresolve.
4077 if (parameters
->options().output_is_position_independent())
4078 layout
->add_eh_frame_for_plt(this,
4079 Eh_cie
<32>::eh_frame_cie
,
4080 sizeof (Eh_cie
<32>::eh_frame_cie
),
4081 glink_eh_frame_fde_32
,
4082 sizeof (glink_eh_frame_fde_32
));
4086 template<int size
, bool big_endian
>
4088 Output_data_glink
<size
, big_endian
>::add_global_entry(const Symbol
* gsym
)
4090 std::pair
<typename
Global_entry_stub_entries::iterator
, bool> p
4091 = this->global_entry_stubs_
.insert(std::make_pair(gsym
, this->ge_size_
));
4093 this->ge_size_
+= 16;
4096 template<int size
, bool big_endian
>
4097 typename Output_data_glink
<size
, big_endian
>::Address
4098 Output_data_glink
<size
, big_endian
>::find_global_entry(const Symbol
* gsym
) const
4100 typename
Global_entry_stub_entries::const_iterator p
4101 = this->global_entry_stubs_
.find(gsym
);
4102 return p
== this->global_entry_stubs_
.end() ? invalid_address
: p
->second
;
4105 template<int size
, bool big_endian
>
4107 Output_data_glink
<size
, big_endian
>::set_final_data_size()
4109 unsigned int count
= this->targ_
->plt_entry_count();
4110 section_size_type total
= 0;
4116 // space for branch table
4117 total
+= 4 * (count
- 1);
4119 total
+= -total
& 15;
4120 total
+= this->pltresolve_size
;
4124 total
+= this->pltresolve_size
;
4126 // space for branch table
4128 if (this->targ_
->abiversion() < 2)
4132 total
+= 4 * (count
- 0x8000);
4136 this->end_branch_table_
= total
;
4137 total
= (total
+ 15) & -16;
4138 total
+= this->ge_size_
;
4140 this->set_data_size(total
);
4143 // Write out plt and long branch stub code.
4145 template<int size
, bool big_endian
>
4147 Stub_table
<size
, big_endian
>::do_write(Output_file
* of
)
4149 if (this->plt_call_stubs_
.empty()
4150 && this->long_branch_stubs_
.empty())
4153 const section_size_type start_off
= this->offset();
4154 const section_size_type off
= this->stub_offset();
4155 const section_size_type oview_size
=
4156 convert_to_section_size_type(this->data_size() - (off
- start_off
));
4157 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
4162 const Output_data_got_powerpc
<size
, big_endian
>* got
4163 = this->targ_
->got_section();
4164 Address got_os_addr
= got
->output_section()->address();
4166 if (!this->plt_call_stubs_
.empty())
4168 // The base address of the .plt section.
4169 Address plt_base
= this->targ_
->plt_section()->address();
4170 Address iplt_base
= invalid_address
;
4172 // Write out plt call stubs.
4173 typename
Plt_stub_entries::const_iterator cs
;
4174 for (cs
= this->plt_call_stubs_
.begin();
4175 cs
!= this->plt_call_stubs_
.end();
4179 Address pltoff
= this->plt_off(cs
, &is_iplt
);
4180 Address plt_addr
= pltoff
;
4183 if (iplt_base
== invalid_address
)
4184 iplt_base
= this->targ_
->iplt_section()->address();
4185 plt_addr
+= iplt_base
;
4188 plt_addr
+= plt_base
;
4189 const Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
4190 <const Powerpc_relobj
<size
, big_endian
>*>(cs
->first
.object_
);
4191 Address got_addr
= got_os_addr
+ ppcobj
->toc_base_offset();
4192 Address off
= plt_addr
- got_addr
;
4194 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
4195 gold_error(_("%s: linkage table error against `%s'"),
4196 cs
->first
.object_
->name().c_str(),
4197 cs
->first
.sym_
->demangled_name().c_str());
4199 bool plt_load_toc
= this->targ_
->abiversion() < 2;
4201 = plt_load_toc
&& parameters
->options().plt_static_chain();
4203 = plt_load_toc
&& this->targ_
->plt_thread_safe();
4204 bool use_fake_dep
= false;
4205 Address cmp_branch_off
= 0;
4208 unsigned int pltindex
4209 = ((pltoff
- this->targ_
->first_plt_entry_offset())
4210 / this->targ_
->plt_entry_size());
4212 = (this->targ_
->glink_section()->pltresolve_size
4214 if (pltindex
> 32768)
4215 glinkoff
+= (pltindex
- 32768) * 4;
4217 = this->targ_
->glink_section()->address() + glinkoff
;
4219 = (this->stub_address() + cs
->second
+ 24
4220 + 4 * (ha(off
) != 0)
4221 + 4 * (ha(off
+ 8 + 8 * static_chain
) != ha(off
))
4222 + 4 * static_chain
);
4223 cmp_branch_off
= to
- from
;
4224 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
4227 p
= oview
+ cs
->second
;
4230 write_insn
<big_endian
>(p
, std_2_1
+ this->targ_
->stk_toc());
4234 write_insn
<big_endian
>(p
, addis_11_2
+ ha(off
));
4236 write_insn
<big_endian
>(p
, ld_12_11
+ l(off
));
4241 write_insn
<big_endian
>(p
, addis_12_2
+ ha(off
));
4243 write_insn
<big_endian
>(p
, ld_12_12
+ l(off
));
4247 && ha(off
+ 8 + 8 * static_chain
) != ha(off
))
4249 write_insn
<big_endian
>(p
, addi_11_11
+ l(off
));
4253 write_insn
<big_endian
>(p
, mtctr_12
);
4259 write_insn
<big_endian
>(p
, xor_2_12_12
);
4261 write_insn
<big_endian
>(p
, add_11_11_2
);
4264 write_insn
<big_endian
>(p
, ld_2_11
+ l(off
+ 8));
4268 write_insn
<big_endian
>(p
, ld_11_11
+ l(off
+ 16));
4275 write_insn
<big_endian
>(p
, std_2_1
+ this->targ_
->stk_toc());
4277 write_insn
<big_endian
>(p
, ld_12_2
+ l(off
));
4280 && ha(off
+ 8 + 8 * static_chain
) != ha(off
))
4282 write_insn
<big_endian
>(p
, addi_2_2
+ l(off
));
4286 write_insn
<big_endian
>(p
, mtctr_12
);
4292 write_insn
<big_endian
>(p
, xor_11_12_12
);
4294 write_insn
<big_endian
>(p
, add_2_2_11
);
4299 write_insn
<big_endian
>(p
, ld_11_2
+ l(off
+ 16));
4302 write_insn
<big_endian
>(p
, ld_2_2
+ l(off
+ 8));
4306 if (thread_safe
&& !use_fake_dep
)
4308 write_insn
<big_endian
>(p
, cmpldi_2_0
);
4310 write_insn
<big_endian
>(p
, bnectr_p4
);
4312 write_insn
<big_endian
>(p
, b
| (cmp_branch_off
& 0x3fffffc));
4315 write_insn
<big_endian
>(p
, bctr
);
4319 // Write out long branch stubs.
4320 typename
Branch_stub_entries::const_iterator bs
;
4321 for (bs
= this->long_branch_stubs_
.begin();
4322 bs
!= this->long_branch_stubs_
.end();
4325 p
= oview
+ this->plt_size_
+ bs
->second
;
4326 Address loc
= this->stub_address() + this->plt_size_
+ bs
->second
;
4327 Address delta
= bs
->first
.dest_
- loc
;
4328 if (delta
+ (1 << 25) < 2 << 25)
4329 write_insn
<big_endian
>(p
, b
| (delta
& 0x3fffffc));
4333 = this->targ_
->find_branch_lookup_table(bs
->first
.dest_
);
4334 gold_assert(brlt_addr
!= invalid_address
);
4335 brlt_addr
+= this->targ_
->brlt_section()->address();
4336 Address got_addr
= got_os_addr
+ bs
->first
.toc_base_off_
;
4337 Address brltoff
= brlt_addr
- got_addr
;
4338 if (ha(brltoff
) == 0)
4340 write_insn
<big_endian
>(p
, ld_12_2
+ l(brltoff
)), p
+= 4;
4344 write_insn
<big_endian
>(p
, addis_12_2
+ ha(brltoff
)), p
+= 4;
4345 write_insn
<big_endian
>(p
, ld_12_12
+ l(brltoff
)), p
+= 4;
4347 write_insn
<big_endian
>(p
, mtctr_12
), p
+= 4;
4348 write_insn
<big_endian
>(p
, bctr
);
4354 if (!this->plt_call_stubs_
.empty())
4356 // The base address of the .plt section.
4357 Address plt_base
= this->targ_
->plt_section()->address();
4358 Address iplt_base
= invalid_address
;
4359 // The address of _GLOBAL_OFFSET_TABLE_.
4360 Address g_o_t
= invalid_address
;
4362 // Write out plt call stubs.
4363 typename
Plt_stub_entries::const_iterator cs
;
4364 for (cs
= this->plt_call_stubs_
.begin();
4365 cs
!= this->plt_call_stubs_
.end();
4369 Address plt_addr
= this->plt_off(cs
, &is_iplt
);
4372 if (iplt_base
== invalid_address
)
4373 iplt_base
= this->targ_
->iplt_section()->address();
4374 plt_addr
+= iplt_base
;
4377 plt_addr
+= plt_base
;
4379 p
= oview
+ cs
->second
;
4380 if (parameters
->options().output_is_position_independent())
4383 const Powerpc_relobj
<size
, big_endian
>* ppcobj
4384 = (static_cast<const Powerpc_relobj
<size
, big_endian
>*>
4385 (cs
->first
.object_
));
4386 if (ppcobj
!= NULL
&& cs
->first
.addend_
>= 32768)
4388 unsigned int got2
= ppcobj
->got2_shndx();
4389 got_addr
= ppcobj
->get_output_section_offset(got2
);
4390 gold_assert(got_addr
!= invalid_address
);
4391 got_addr
+= (ppcobj
->output_section(got2
)->address()
4392 + cs
->first
.addend_
);
4396 if (g_o_t
== invalid_address
)
4398 const Output_data_got_powerpc
<size
, big_endian
>* got
4399 = this->targ_
->got_section();
4400 g_o_t
= got
->address() + got
->g_o_t();
4405 Address off
= plt_addr
- got_addr
;
4408 write_insn
<big_endian
>(p
+ 0, lwz_11_30
+ l(off
));
4409 write_insn
<big_endian
>(p
+ 4, mtctr_11
);
4410 write_insn
<big_endian
>(p
+ 8, bctr
);
4414 write_insn
<big_endian
>(p
+ 0, addis_11_30
+ ha(off
));
4415 write_insn
<big_endian
>(p
+ 4, lwz_11_11
+ l(off
));
4416 write_insn
<big_endian
>(p
+ 8, mtctr_11
);
4417 write_insn
<big_endian
>(p
+ 12, bctr
);
4422 write_insn
<big_endian
>(p
+ 0, lis_11
+ ha(plt_addr
));
4423 write_insn
<big_endian
>(p
+ 4, lwz_11_11
+ l(plt_addr
));
4424 write_insn
<big_endian
>(p
+ 8, mtctr_11
);
4425 write_insn
<big_endian
>(p
+ 12, bctr
);
4430 // Write out long branch stubs.
4431 typename
Branch_stub_entries::const_iterator bs
;
4432 for (bs
= this->long_branch_stubs_
.begin();
4433 bs
!= this->long_branch_stubs_
.end();
4436 p
= oview
+ this->plt_size_
+ bs
->second
;
4437 Address loc
= this->stub_address() + this->plt_size_
+ bs
->second
;
4438 Address delta
= bs
->first
.dest_
- loc
;
4439 if (delta
+ (1 << 25) < 2 << 25)
4440 write_insn
<big_endian
>(p
, b
| (delta
& 0x3fffffc));
4441 else if (!parameters
->options().output_is_position_independent())
4443 write_insn
<big_endian
>(p
+ 0, lis_12
+ ha(bs
->first
.dest_
));
4444 write_insn
<big_endian
>(p
+ 4, addi_12_12
+ l(bs
->first
.dest_
));
4445 write_insn
<big_endian
>(p
+ 8, mtctr_12
);
4446 write_insn
<big_endian
>(p
+ 12, bctr
);
4451 write_insn
<big_endian
>(p
+ 0, mflr_0
);
4452 write_insn
<big_endian
>(p
+ 4, bcl_20_31
);
4453 write_insn
<big_endian
>(p
+ 8, mflr_12
);
4454 write_insn
<big_endian
>(p
+ 12, addis_12_12
+ ha(delta
));
4455 write_insn
<big_endian
>(p
+ 16, addi_12_12
+ l(delta
));
4456 write_insn
<big_endian
>(p
+ 20, mtlr_0
);
4457 write_insn
<big_endian
>(p
+ 24, mtctr_12
);
4458 write_insn
<big_endian
>(p
+ 28, bctr
);
4464 // Write out .glink.
4466 template<int size
, bool big_endian
>
4468 Output_data_glink
<size
, big_endian
>::do_write(Output_file
* of
)
4470 const section_size_type off
= this->offset();
4471 const section_size_type oview_size
=
4472 convert_to_section_size_type(this->data_size());
4473 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
4476 // The base address of the .plt section.
4477 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
4478 Address plt_base
= this->targ_
->plt_section()->address();
4482 if (this->end_branch_table_
!= 0)
4484 // Write pltresolve stub.
4486 Address after_bcl
= this->address() + 16;
4487 Address pltoff
= plt_base
- after_bcl
;
4489 elfcpp::Swap
<64, big_endian
>::writeval(p
, pltoff
), p
+= 8;
4491 if (this->targ_
->abiversion() < 2)
4493 write_insn
<big_endian
>(p
, mflr_12
), p
+= 4;
4494 write_insn
<big_endian
>(p
, bcl_20_31
), p
+= 4;
4495 write_insn
<big_endian
>(p
, mflr_11
), p
+= 4;
4496 write_insn
<big_endian
>(p
, ld_2_11
+ l(-16)), p
+= 4;
4497 write_insn
<big_endian
>(p
, mtlr_12
), p
+= 4;
4498 write_insn
<big_endian
>(p
, add_11_2_11
), p
+= 4;
4499 write_insn
<big_endian
>(p
, ld_12_11
+ 0), p
+= 4;
4500 write_insn
<big_endian
>(p
, ld_2_11
+ 8), p
+= 4;
4501 write_insn
<big_endian
>(p
, mtctr_12
), p
+= 4;
4502 write_insn
<big_endian
>(p
, ld_11_11
+ 16), p
+= 4;
4506 write_insn
<big_endian
>(p
, mflr_0
), p
+= 4;
4507 write_insn
<big_endian
>(p
, bcl_20_31
), p
+= 4;
4508 write_insn
<big_endian
>(p
, mflr_11
), p
+= 4;
4509 write_insn
<big_endian
>(p
, ld_2_11
+ l(-16)), p
+= 4;
4510 write_insn
<big_endian
>(p
, mtlr_0
), p
+= 4;
4511 write_insn
<big_endian
>(p
, sub_12_12_11
), p
+= 4;
4512 write_insn
<big_endian
>(p
, add_11_2_11
), p
+= 4;
4513 write_insn
<big_endian
>(p
, addi_0_12
+ l(-48)), p
+= 4;
4514 write_insn
<big_endian
>(p
, ld_12_11
+ 0), p
+= 4;
4515 write_insn
<big_endian
>(p
, srdi_0_0_2
), p
+= 4;
4516 write_insn
<big_endian
>(p
, mtctr_12
), p
+= 4;
4517 write_insn
<big_endian
>(p
, ld_11_11
+ 8), p
+= 4;
4519 write_insn
<big_endian
>(p
, bctr
), p
+= 4;
4520 while (p
< oview
+ this->pltresolve_size
)
4521 write_insn
<big_endian
>(p
, nop
), p
+= 4;
4523 // Write lazy link call stubs.
4525 while (p
< oview
+ this->end_branch_table_
)
4527 if (this->targ_
->abiversion() < 2)
4531 write_insn
<big_endian
>(p
, li_0_0
+ indx
), p
+= 4;
4535 write_insn
<big_endian
>(p
, lis_0_0
+ hi(indx
)), p
+= 4;
4536 write_insn
<big_endian
>(p
, ori_0_0_0
+ l(indx
)), p
+= 4;
4539 uint32_t branch_off
= 8 - (p
- oview
);
4540 write_insn
<big_endian
>(p
, b
+ (branch_off
& 0x3fffffc)), p
+= 4;
4545 Address plt_base
= this->targ_
->plt_section()->address();
4546 Address iplt_base
= invalid_address
;
4547 unsigned int global_entry_off
= (this->end_branch_table_
+ 15) & -16;
4548 Address global_entry_base
= this->address() + global_entry_off
;
4549 typename
Global_entry_stub_entries::const_iterator ge
;
4550 for (ge
= this->global_entry_stubs_
.begin();
4551 ge
!= this->global_entry_stubs_
.end();
4554 p
= oview
+ global_entry_off
+ ge
->second
;
4555 Address plt_addr
= ge
->first
->plt_offset();
4556 if (ge
->first
->type() == elfcpp::STT_GNU_IFUNC
4557 && ge
->first
->can_use_relative_reloc(false))
4559 if (iplt_base
== invalid_address
)
4560 iplt_base
= this->targ_
->iplt_section()->address();
4561 plt_addr
+= iplt_base
;
4564 plt_addr
+= plt_base
;
4565 Address my_addr
= global_entry_base
+ ge
->second
;
4566 Address off
= plt_addr
- my_addr
;
4568 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
4569 gold_error(_("%s: linkage table error against `%s'"),
4570 ge
->first
->object()->name().c_str(),
4571 ge
->first
->demangled_name().c_str());
4573 write_insn
<big_endian
>(p
, addis_12_12
+ ha(off
)), p
+= 4;
4574 write_insn
<big_endian
>(p
, ld_12_12
+ l(off
)), p
+= 4;
4575 write_insn
<big_endian
>(p
, mtctr_12
), p
+= 4;
4576 write_insn
<big_endian
>(p
, bctr
);
4581 const Output_data_got_powerpc
<size
, big_endian
>* got
4582 = this->targ_
->got_section();
4583 // The address of _GLOBAL_OFFSET_TABLE_.
4584 Address g_o_t
= got
->address() + got
->g_o_t();
4586 // Write out pltresolve branch table.
4588 unsigned int the_end
= oview_size
- this->pltresolve_size
;
4589 unsigned char* end_p
= oview
+ the_end
;
4590 while (p
< end_p
- 8 * 4)
4591 write_insn
<big_endian
>(p
, b
+ end_p
- p
), p
+= 4;
4593 write_insn
<big_endian
>(p
, nop
), p
+= 4;
4595 // Write out pltresolve call stub.
4596 if (parameters
->options().output_is_position_independent())
4598 Address res0_off
= 0;
4599 Address after_bcl_off
= the_end
+ 12;
4600 Address bcl_res0
= after_bcl_off
- res0_off
;
4602 write_insn
<big_endian
>(p
+ 0, addis_11_11
+ ha(bcl_res0
));
4603 write_insn
<big_endian
>(p
+ 4, mflr_0
);
4604 write_insn
<big_endian
>(p
+ 8, bcl_20_31
);
4605 write_insn
<big_endian
>(p
+ 12, addi_11_11
+ l(bcl_res0
));
4606 write_insn
<big_endian
>(p
+ 16, mflr_12
);
4607 write_insn
<big_endian
>(p
+ 20, mtlr_0
);
4608 write_insn
<big_endian
>(p
+ 24, sub_11_11_12
);
4610 Address got_bcl
= g_o_t
+ 4 - (after_bcl_off
+ this->address());
4612 write_insn
<big_endian
>(p
+ 28, addis_12_12
+ ha(got_bcl
));
4613 if (ha(got_bcl
) == ha(got_bcl
+ 4))
4615 write_insn
<big_endian
>(p
+ 32, lwz_0_12
+ l(got_bcl
));
4616 write_insn
<big_endian
>(p
+ 36, lwz_12_12
+ l(got_bcl
+ 4));
4620 write_insn
<big_endian
>(p
+ 32, lwzu_0_12
+ l(got_bcl
));
4621 write_insn
<big_endian
>(p
+ 36, lwz_12_12
+ 4);
4623 write_insn
<big_endian
>(p
+ 40, mtctr_0
);
4624 write_insn
<big_endian
>(p
+ 44, add_0_11_11
);
4625 write_insn
<big_endian
>(p
+ 48, add_11_0_11
);
4626 write_insn
<big_endian
>(p
+ 52, bctr
);
4627 write_insn
<big_endian
>(p
+ 56, nop
);
4628 write_insn
<big_endian
>(p
+ 60, nop
);
4632 Address res0
= this->address();
4634 write_insn
<big_endian
>(p
+ 0, lis_12
+ ha(g_o_t
+ 4));
4635 write_insn
<big_endian
>(p
+ 4, addis_11_11
+ ha(-res0
));
4636 if (ha(g_o_t
+ 4) == ha(g_o_t
+ 8))
4637 write_insn
<big_endian
>(p
+ 8, lwz_0_12
+ l(g_o_t
+ 4));
4639 write_insn
<big_endian
>(p
+ 8, lwzu_0_12
+ l(g_o_t
+ 4));
4640 write_insn
<big_endian
>(p
+ 12, addi_11_11
+ l(-res0
));
4641 write_insn
<big_endian
>(p
+ 16, mtctr_0
);
4642 write_insn
<big_endian
>(p
+ 20, add_0_11_11
);
4643 if (ha(g_o_t
+ 4) == ha(g_o_t
+ 8))
4644 write_insn
<big_endian
>(p
+ 24, lwz_12_12
+ l(g_o_t
+ 8));
4646 write_insn
<big_endian
>(p
+ 24, lwz_12_12
+ 4);
4647 write_insn
<big_endian
>(p
+ 28, add_11_0_11
);
4648 write_insn
<big_endian
>(p
+ 32, bctr
);
4649 write_insn
<big_endian
>(p
+ 36, nop
);
4650 write_insn
<big_endian
>(p
+ 40, nop
);
4651 write_insn
<big_endian
>(p
+ 44, nop
);
4652 write_insn
<big_endian
>(p
+ 48, nop
);
4653 write_insn
<big_endian
>(p
+ 52, nop
);
4654 write_insn
<big_endian
>(p
+ 56, nop
);
4655 write_insn
<big_endian
>(p
+ 60, nop
);
4660 of
->write_output_view(off
, oview_size
, oview
);
4664 // A class to handle linker generated save/restore functions.
4666 template<int size
, bool big_endian
>
4667 class Output_data_save_res
: public Output_section_data_build
4670 Output_data_save_res(Symbol_table
* symtab
);
4673 // Write to a map file.
4675 do_print_to_mapfile(Mapfile
* mapfile
) const
4676 { mapfile
->print_output_data(this, _("** save/restore")); }
4679 do_write(Output_file
*);
4682 // The maximum size of save/restore contents.
4683 static const unsigned int savres_max
= 218*4;
4686 savres_define(Symbol_table
* symtab
,
4688 unsigned int lo
, unsigned int hi
,
4689 unsigned char* write_ent(unsigned char*, int),
4690 unsigned char* write_tail(unsigned char*, int));
4692 unsigned char *contents_
;
4695 template<bool big_endian
>
4696 static unsigned char*
4697 savegpr0(unsigned char* p
, int r
)
4699 uint32_t insn
= std_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4700 write_insn
<big_endian
>(p
, insn
);
4704 template<bool big_endian
>
4705 static unsigned char*
4706 savegpr0_tail(unsigned char* p
, int r
)
4708 p
= savegpr0
<big_endian
>(p
, r
);
4709 uint32_t insn
= std_0_1
+ 16;
4710 write_insn
<big_endian
>(p
, insn
);
4712 write_insn
<big_endian
>(p
, blr
);
4716 template<bool big_endian
>
4717 static unsigned char*
4718 restgpr0(unsigned char* p
, int r
)
4720 uint32_t insn
= ld_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4721 write_insn
<big_endian
>(p
, insn
);
4725 template<bool big_endian
>
4726 static unsigned char*
4727 restgpr0_tail(unsigned char* p
, int r
)
4729 uint32_t insn
= ld_0_1
+ 16;
4730 write_insn
<big_endian
>(p
, insn
);
4732 p
= restgpr0
<big_endian
>(p
, r
);
4733 write_insn
<big_endian
>(p
, mtlr_0
);
4737 p
= restgpr0
<big_endian
>(p
, 30);
4738 p
= restgpr0
<big_endian
>(p
, 31);
4740 write_insn
<big_endian
>(p
, blr
);
4744 template<bool big_endian
>
4745 static unsigned char*
4746 savegpr1(unsigned char* p
, int r
)
4748 uint32_t insn
= std_0_12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4749 write_insn
<big_endian
>(p
, insn
);
4753 template<bool big_endian
>
4754 static unsigned char*
4755 savegpr1_tail(unsigned char* p
, int r
)
4757 p
= savegpr1
<big_endian
>(p
, r
);
4758 write_insn
<big_endian
>(p
, blr
);
4762 template<bool big_endian
>
4763 static unsigned char*
4764 restgpr1(unsigned char* p
, int r
)
4766 uint32_t insn
= ld_0_12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4767 write_insn
<big_endian
>(p
, insn
);
4771 template<bool big_endian
>
4772 static unsigned char*
4773 restgpr1_tail(unsigned char* p
, int r
)
4775 p
= restgpr1
<big_endian
>(p
, r
);
4776 write_insn
<big_endian
>(p
, blr
);
4780 template<bool big_endian
>
4781 static unsigned char*
4782 savefpr(unsigned char* p
, int r
)
4784 uint32_t insn
= stfd_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4785 write_insn
<big_endian
>(p
, insn
);
4789 template<bool big_endian
>
4790 static unsigned char*
4791 savefpr0_tail(unsigned char* p
, int r
)
4793 p
= savefpr
<big_endian
>(p
, r
);
4794 write_insn
<big_endian
>(p
, std_0_1
+ 16);
4796 write_insn
<big_endian
>(p
, blr
);
4800 template<bool big_endian
>
4801 static unsigned char*
4802 restfpr(unsigned char* p
, int r
)
4804 uint32_t insn
= lfd_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4805 write_insn
<big_endian
>(p
, insn
);
4809 template<bool big_endian
>
4810 static unsigned char*
4811 restfpr0_tail(unsigned char* p
, int r
)
4813 write_insn
<big_endian
>(p
, ld_0_1
+ 16);
4815 p
= restfpr
<big_endian
>(p
, r
);
4816 write_insn
<big_endian
>(p
, mtlr_0
);
4820 p
= restfpr
<big_endian
>(p
, 30);
4821 p
= restfpr
<big_endian
>(p
, 31);
4823 write_insn
<big_endian
>(p
, blr
);
4827 template<bool big_endian
>
4828 static unsigned char*
4829 savefpr1_tail(unsigned char* p
, int r
)
4831 p
= savefpr
<big_endian
>(p
, r
);
4832 write_insn
<big_endian
>(p
, blr
);
4836 template<bool big_endian
>
4837 static unsigned char*
4838 restfpr1_tail(unsigned char* p
, int r
)
4840 p
= restfpr
<big_endian
>(p
, r
);
4841 write_insn
<big_endian
>(p
, blr
);
4845 template<bool big_endian
>
4846 static unsigned char*
4847 savevr(unsigned char* p
, int r
)
4849 uint32_t insn
= li_12_0
+ (1 << 16) - (32 - r
) * 16;
4850 write_insn
<big_endian
>(p
, insn
);
4852 insn
= stvx_0_12_0
+ (r
<< 21);
4853 write_insn
<big_endian
>(p
, insn
);
4857 template<bool big_endian
>
4858 static unsigned char*
4859 savevr_tail(unsigned char* p
, int r
)
4861 p
= savevr
<big_endian
>(p
, r
);
4862 write_insn
<big_endian
>(p
, blr
);
4866 template<bool big_endian
>
4867 static unsigned char*
4868 restvr(unsigned char* p
, int r
)
4870 uint32_t insn
= li_12_0
+ (1 << 16) - (32 - r
) * 16;
4871 write_insn
<big_endian
>(p
, insn
);
4873 insn
= lvx_0_12_0
+ (r
<< 21);
4874 write_insn
<big_endian
>(p
, insn
);
4878 template<bool big_endian
>
4879 static unsigned char*
4880 restvr_tail(unsigned char* p
, int r
)
4882 p
= restvr
<big_endian
>(p
, r
);
4883 write_insn
<big_endian
>(p
, blr
);
4888 template<int size
, bool big_endian
>
4889 Output_data_save_res
<size
, big_endian
>::Output_data_save_res(
4890 Symbol_table
* symtab
)
4891 : Output_section_data_build(4),
4894 this->savres_define(symtab
,
4895 "_savegpr0_", 14, 31,
4896 savegpr0
<big_endian
>, savegpr0_tail
<big_endian
>);
4897 this->savres_define(symtab
,
4898 "_restgpr0_", 14, 29,
4899 restgpr0
<big_endian
>, restgpr0_tail
<big_endian
>);
4900 this->savres_define(symtab
,
4901 "_restgpr0_", 30, 31,
4902 restgpr0
<big_endian
>, restgpr0_tail
<big_endian
>);
4903 this->savres_define(symtab
,
4904 "_savegpr1_", 14, 31,
4905 savegpr1
<big_endian
>, savegpr1_tail
<big_endian
>);
4906 this->savres_define(symtab
,
4907 "_restgpr1_", 14, 31,
4908 restgpr1
<big_endian
>, restgpr1_tail
<big_endian
>);
4909 this->savres_define(symtab
,
4910 "_savefpr_", 14, 31,
4911 savefpr
<big_endian
>, savefpr0_tail
<big_endian
>);
4912 this->savres_define(symtab
,
4913 "_restfpr_", 14, 29,
4914 restfpr
<big_endian
>, restfpr0_tail
<big_endian
>);
4915 this->savres_define(symtab
,
4916 "_restfpr_", 30, 31,
4917 restfpr
<big_endian
>, restfpr0_tail
<big_endian
>);
4918 this->savres_define(symtab
,
4920 savefpr
<big_endian
>, savefpr1_tail
<big_endian
>);
4921 this->savres_define(symtab
,
4923 restfpr
<big_endian
>, restfpr1_tail
<big_endian
>);
4924 this->savres_define(symtab
,
4926 savevr
<big_endian
>, savevr_tail
<big_endian
>);
4927 this->savres_define(symtab
,
4929 restvr
<big_endian
>, restvr_tail
<big_endian
>);
4932 template<int size
, bool big_endian
>
4934 Output_data_save_res
<size
, big_endian
>::savres_define(
4935 Symbol_table
* symtab
,
4937 unsigned int lo
, unsigned int hi
,
4938 unsigned char* write_ent(unsigned char*, int),
4939 unsigned char* write_tail(unsigned char*, int))
4941 size_t len
= strlen(name
);
4942 bool writing
= false;
4945 memcpy(sym
, name
, len
);
4948 for (unsigned int i
= lo
; i
<= hi
; i
++)
4950 sym
[len
+ 0] = i
/ 10 + '0';
4951 sym
[len
+ 1] = i
% 10 + '0';
4952 Symbol
* gsym
= symtab
->lookup(sym
);
4953 bool refd
= gsym
!= NULL
&& gsym
->is_undefined();
4954 writing
= writing
|| refd
;
4957 if (this->contents_
== NULL
)
4958 this->contents_
= new unsigned char[this->savres_max
];
4960 section_size_type value
= this->current_data_size();
4961 unsigned char* p
= this->contents_
+ value
;
4963 p
= write_ent(p
, i
);
4965 p
= write_tail(p
, i
);
4966 section_size_type cur_size
= p
- this->contents_
;
4967 this->set_current_data_size(cur_size
);
4969 symtab
->define_in_output_data(sym
, NULL
, Symbol_table::PREDEFINED
,
4970 this, value
, cur_size
- value
,
4971 elfcpp::STT_FUNC
, elfcpp::STB_GLOBAL
,
4972 elfcpp::STV_HIDDEN
, 0, false, false);
4977 // Write out save/restore.
4979 template<int size
, bool big_endian
>
4981 Output_data_save_res
<size
, big_endian
>::do_write(Output_file
* of
)
4983 const section_size_type off
= this->offset();
4984 const section_size_type oview_size
=
4985 convert_to_section_size_type(this->data_size());
4986 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
4987 memcpy(oview
, this->contents_
, oview_size
);
4988 of
->write_output_view(off
, oview_size
, oview
);
4992 // Create the glink section.
4994 template<int size
, bool big_endian
>
4996 Target_powerpc
<size
, big_endian
>::make_glink_section(Layout
* layout
)
4998 if (this->glink_
== NULL
)
5000 this->glink_
= new Output_data_glink
<size
, big_endian
>(this);
5001 this->glink_
->add_eh_frame(layout
);
5002 layout
->add_output_section_data(".text", elfcpp::SHT_PROGBITS
,
5003 elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
,
5004 this->glink_
, ORDER_TEXT
, false);
5008 // Create a PLT entry for a global symbol.
5010 template<int size
, bool big_endian
>
5012 Target_powerpc
<size
, big_endian
>::make_plt_entry(Symbol_table
* symtab
,
5016 if (gsym
->type() == elfcpp::STT_GNU_IFUNC
5017 && gsym
->can_use_relative_reloc(false))
5019 if (this->iplt_
== NULL
)
5020 this->make_iplt_section(symtab
, layout
);
5021 this->iplt_
->add_ifunc_entry(gsym
);
5025 if (this->plt_
== NULL
)
5026 this->make_plt_section(symtab
, layout
);
5027 this->plt_
->add_entry(gsym
);
5031 // Make a PLT entry for a local STT_GNU_IFUNC symbol.
5033 template<int size
, bool big_endian
>
5035 Target_powerpc
<size
, big_endian
>::make_local_ifunc_plt_entry(
5036 Symbol_table
* symtab
,
5038 Sized_relobj_file
<size
, big_endian
>* relobj
,
5041 if (this->iplt_
== NULL
)
5042 this->make_iplt_section(symtab
, layout
);
5043 this->iplt_
->add_local_ifunc_entry(relobj
, r_sym
);
5046 // Return the number of entries in the PLT.
5048 template<int size
, bool big_endian
>
5050 Target_powerpc
<size
, big_endian
>::plt_entry_count() const
5052 if (this->plt_
== NULL
)
5054 return this->plt_
->entry_count();
5057 // Create a GOT entry for local dynamic __tls_get_addr calls.
5059 template<int size
, bool big_endian
>
5061 Target_powerpc
<size
, big_endian
>::tlsld_got_offset(
5062 Symbol_table
* symtab
,
5064 Sized_relobj_file
<size
, big_endian
>* object
)
5066 if (this->tlsld_got_offset_
== -1U)
5068 gold_assert(symtab
!= NULL
&& layout
!= NULL
&& object
!= NULL
);
5069 Reloc_section
* rela_dyn
= this->rela_dyn_section(layout
);
5070 Output_data_got_powerpc
<size
, big_endian
>* got
5071 = this->got_section(symtab
, layout
);
5072 unsigned int got_offset
= got
->add_constant_pair(0, 0);
5073 rela_dyn
->add_local(object
, 0, elfcpp::R_POWERPC_DTPMOD
, got
,
5075 this->tlsld_got_offset_
= got_offset
;
5077 return this->tlsld_got_offset_
;
5080 // Get the Reference_flags for a particular relocation.
5082 template<int size
, bool big_endian
>
5084 Target_powerpc
<size
, big_endian
>::Scan::get_reference_flags(
5085 unsigned int r_type
,
5086 const Target_powerpc
* target
)
5092 case elfcpp::R_POWERPC_NONE
:
5093 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
5094 case elfcpp::R_POWERPC_GNU_VTENTRY
:
5095 case elfcpp::R_PPC64_TOC
:
5096 // No symbol reference.
5099 case elfcpp::R_PPC64_ADDR64
:
5100 case elfcpp::R_PPC64_UADDR64
:
5101 case elfcpp::R_POWERPC_ADDR32
:
5102 case elfcpp::R_POWERPC_UADDR32
:
5103 case elfcpp::R_POWERPC_ADDR16
:
5104 case elfcpp::R_POWERPC_UADDR16
:
5105 case elfcpp::R_POWERPC_ADDR16_LO
:
5106 case elfcpp::R_POWERPC_ADDR16_HI
:
5107 case elfcpp::R_POWERPC_ADDR16_HA
:
5108 ref
= Symbol::ABSOLUTE_REF
;
5111 case elfcpp::R_POWERPC_ADDR24
:
5112 case elfcpp::R_POWERPC_ADDR14
:
5113 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
5114 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
5115 ref
= Symbol::FUNCTION_CALL
| Symbol::ABSOLUTE_REF
;
5118 case elfcpp::R_PPC64_REL64
:
5119 case elfcpp::R_POWERPC_REL32
:
5120 case elfcpp::R_PPC_LOCAL24PC
:
5121 case elfcpp::R_POWERPC_REL16
:
5122 case elfcpp::R_POWERPC_REL16_LO
:
5123 case elfcpp::R_POWERPC_REL16_HI
:
5124 case elfcpp::R_POWERPC_REL16_HA
:
5125 ref
= Symbol::RELATIVE_REF
;
5128 case elfcpp::R_POWERPC_REL24
:
5129 case elfcpp::R_PPC_PLTREL24
:
5130 case elfcpp::R_POWERPC_REL14
:
5131 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
5132 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
5133 ref
= Symbol::FUNCTION_CALL
| Symbol::RELATIVE_REF
;
5136 case elfcpp::R_POWERPC_GOT16
:
5137 case elfcpp::R_POWERPC_GOT16_LO
:
5138 case elfcpp::R_POWERPC_GOT16_HI
:
5139 case elfcpp::R_POWERPC_GOT16_HA
:
5140 case elfcpp::R_PPC64_GOT16_DS
:
5141 case elfcpp::R_PPC64_GOT16_LO_DS
:
5142 case elfcpp::R_PPC64_TOC16
:
5143 case elfcpp::R_PPC64_TOC16_LO
:
5144 case elfcpp::R_PPC64_TOC16_HI
:
5145 case elfcpp::R_PPC64_TOC16_HA
:
5146 case elfcpp::R_PPC64_TOC16_DS
:
5147 case elfcpp::R_PPC64_TOC16_LO_DS
:
5149 ref
= Symbol::ABSOLUTE_REF
;
5152 case elfcpp::R_POWERPC_GOT_TPREL16
:
5153 case elfcpp::R_POWERPC_TLS
:
5154 ref
= Symbol::TLS_REF
;
5157 case elfcpp::R_POWERPC_COPY
:
5158 case elfcpp::R_POWERPC_GLOB_DAT
:
5159 case elfcpp::R_POWERPC_JMP_SLOT
:
5160 case elfcpp::R_POWERPC_RELATIVE
:
5161 case elfcpp::R_POWERPC_DTPMOD
:
5163 // Not expected. We will give an error later.
5167 if (size
== 64 && target
->abiversion() < 2)
5168 ref
|= Symbol::FUNC_DESC_ABI
;
5172 // Report an unsupported relocation against a local symbol.
5174 template<int size
, bool big_endian
>
5176 Target_powerpc
<size
, big_endian
>::Scan::unsupported_reloc_local(
5177 Sized_relobj_file
<size
, big_endian
>* object
,
5178 unsigned int r_type
)
5180 gold_error(_("%s: unsupported reloc %u against local symbol"),
5181 object
->name().c_str(), r_type
);
5184 // We are about to emit a dynamic relocation of type R_TYPE. If the
5185 // dynamic linker does not support it, issue an error.
5187 template<int size
, bool big_endian
>
5189 Target_powerpc
<size
, big_endian
>::Scan::check_non_pic(Relobj
* object
,
5190 unsigned int r_type
)
5192 gold_assert(r_type
!= elfcpp::R_POWERPC_NONE
);
5194 // These are the relocation types supported by glibc for both 32-bit
5195 // and 64-bit powerpc.
5198 case elfcpp::R_POWERPC_NONE
:
5199 case elfcpp::R_POWERPC_RELATIVE
:
5200 case elfcpp::R_POWERPC_GLOB_DAT
:
5201 case elfcpp::R_POWERPC_DTPMOD
:
5202 case elfcpp::R_POWERPC_DTPREL
:
5203 case elfcpp::R_POWERPC_TPREL
:
5204 case elfcpp::R_POWERPC_JMP_SLOT
:
5205 case elfcpp::R_POWERPC_COPY
:
5206 case elfcpp::R_POWERPC_IRELATIVE
:
5207 case elfcpp::R_POWERPC_ADDR32
:
5208 case elfcpp::R_POWERPC_UADDR32
:
5209 case elfcpp::R_POWERPC_ADDR24
:
5210 case elfcpp::R_POWERPC_ADDR16
:
5211 case elfcpp::R_POWERPC_UADDR16
:
5212 case elfcpp::R_POWERPC_ADDR16_LO
:
5213 case elfcpp::R_POWERPC_ADDR16_HI
:
5214 case elfcpp::R_POWERPC_ADDR16_HA
:
5215 case elfcpp::R_POWERPC_ADDR14
:
5216 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
5217 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
5218 case elfcpp::R_POWERPC_REL32
:
5219 case elfcpp::R_POWERPC_REL24
:
5220 case elfcpp::R_POWERPC_TPREL16
:
5221 case elfcpp::R_POWERPC_TPREL16_LO
:
5222 case elfcpp::R_POWERPC_TPREL16_HI
:
5223 case elfcpp::R_POWERPC_TPREL16_HA
:
5234 // These are the relocation types supported only on 64-bit.
5235 case elfcpp::R_PPC64_ADDR64
:
5236 case elfcpp::R_PPC64_UADDR64
:
5237 case elfcpp::R_PPC64_JMP_IREL
:
5238 case elfcpp::R_PPC64_ADDR16_DS
:
5239 case elfcpp::R_PPC64_ADDR16_LO_DS
:
5240 case elfcpp::R_PPC64_ADDR16_HIGH
:
5241 case elfcpp::R_PPC64_ADDR16_HIGHA
:
5242 case elfcpp::R_PPC64_ADDR16_HIGHER
:
5243 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
5244 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
5245 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
5246 case elfcpp::R_PPC64_REL64
:
5247 case elfcpp::R_POWERPC_ADDR30
:
5248 case elfcpp::R_PPC64_TPREL16_DS
:
5249 case elfcpp::R_PPC64_TPREL16_LO_DS
:
5250 case elfcpp::R_PPC64_TPREL16_HIGH
:
5251 case elfcpp::R_PPC64_TPREL16_HIGHA
:
5252 case elfcpp::R_PPC64_TPREL16_HIGHER
:
5253 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
5254 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
5255 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
5266 // These are the relocation types supported only on 32-bit.
5267 // ??? glibc ld.so doesn't need to support these.
5268 case elfcpp::R_POWERPC_DTPREL16
:
5269 case elfcpp::R_POWERPC_DTPREL16_LO
:
5270 case elfcpp::R_POWERPC_DTPREL16_HI
:
5271 case elfcpp::R_POWERPC_DTPREL16_HA
:
5279 // This prevents us from issuing more than one error per reloc
5280 // section. But we can still wind up issuing more than one
5281 // error per object file.
5282 if (this->issued_non_pic_error_
)
5284 gold_assert(parameters
->options().output_is_position_independent());
5285 object
->error(_("requires unsupported dynamic reloc; "
5286 "recompile with -fPIC"));
5287 this->issued_non_pic_error_
= true;
5291 // Return whether we need to make a PLT entry for a relocation of the
5292 // given type against a STT_GNU_IFUNC symbol.
5294 template<int size
, bool big_endian
>
5296 Target_powerpc
<size
, big_endian
>::Scan::reloc_needs_plt_for_ifunc(
5297 Target_powerpc
<size
, big_endian
>* target
,
5298 Sized_relobj_file
<size
, big_endian
>* object
,
5299 unsigned int r_type
,
5302 // In non-pic code any reference will resolve to the plt call stub
5303 // for the ifunc symbol.
5304 if ((size
== 32 || target
->abiversion() >= 2)
5305 && !parameters
->options().output_is_position_independent())
5310 // Word size refs from data sections are OK, but don't need a PLT entry.
5311 case elfcpp::R_POWERPC_ADDR32
:
5312 case elfcpp::R_POWERPC_UADDR32
:
5317 case elfcpp::R_PPC64_ADDR64
:
5318 case elfcpp::R_PPC64_UADDR64
:
5323 // GOT refs are good, but also don't need a PLT entry.
5324 case elfcpp::R_POWERPC_GOT16
:
5325 case elfcpp::R_POWERPC_GOT16_LO
:
5326 case elfcpp::R_POWERPC_GOT16_HI
:
5327 case elfcpp::R_POWERPC_GOT16_HA
:
5328 case elfcpp::R_PPC64_GOT16_DS
:
5329 case elfcpp::R_PPC64_GOT16_LO_DS
:
5332 // Function calls are good, and these do need a PLT entry.
5333 case elfcpp::R_POWERPC_ADDR24
:
5334 case elfcpp::R_POWERPC_ADDR14
:
5335 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
5336 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
5337 case elfcpp::R_POWERPC_REL24
:
5338 case elfcpp::R_PPC_PLTREL24
:
5339 case elfcpp::R_POWERPC_REL14
:
5340 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
5341 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
5348 // Anything else is a problem.
5349 // If we are building a static executable, the libc startup function
5350 // responsible for applying indirect function relocations is going
5351 // to complain about the reloc type.
5352 // If we are building a dynamic executable, we will have a text
5353 // relocation. The dynamic loader will set the text segment
5354 // writable and non-executable to apply text relocations. So we'll
5355 // segfault when trying to run the indirection function to resolve
5358 gold_error(_("%s: unsupported reloc %u for IFUNC symbol"),
5359 object
->name().c_str(), r_type
);
5363 // Scan a relocation for a local symbol.
5365 template<int size
, bool big_endian
>
5367 Target_powerpc
<size
, big_endian
>::Scan::local(
5368 Symbol_table
* symtab
,
5370 Target_powerpc
<size
, big_endian
>* target
,
5371 Sized_relobj_file
<size
, big_endian
>* object
,
5372 unsigned int data_shndx
,
5373 Output_section
* output_section
,
5374 const elfcpp::Rela
<size
, big_endian
>& reloc
,
5375 unsigned int r_type
,
5376 const elfcpp::Sym
<size
, big_endian
>& lsym
,
5379 this->maybe_skip_tls_get_addr_call(r_type
, NULL
);
5381 if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
5382 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
5384 this->expect_tls_get_addr_call();
5385 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(true);
5386 if (tls_type
!= tls::TLSOPT_NONE
)
5387 this->skip_next_tls_get_addr_call();
5389 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
5390 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
5392 this->expect_tls_get_addr_call();
5393 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
5394 if (tls_type
!= tls::TLSOPT_NONE
)
5395 this->skip_next_tls_get_addr_call();
5398 Powerpc_relobj
<size
, big_endian
>* ppc_object
5399 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
5404 && data_shndx
== ppc_object
->opd_shndx()
5405 && r_type
== elfcpp::R_PPC64_ADDR64
)
5406 ppc_object
->set_opd_discard(reloc
.get_r_offset());
5410 // A local STT_GNU_IFUNC symbol may require a PLT entry.
5411 bool is_ifunc
= lsym
.get_st_type() == elfcpp::STT_GNU_IFUNC
;
5412 if (is_ifunc
&& this->reloc_needs_plt_for_ifunc(target
, object
, r_type
, true))
5414 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5415 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
5416 r_type
, r_sym
, reloc
.get_r_addend());
5417 target
->make_local_ifunc_plt_entry(symtab
, layout
, object
, r_sym
);
5422 case elfcpp::R_POWERPC_NONE
:
5423 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
5424 case elfcpp::R_POWERPC_GNU_VTENTRY
:
5425 case elfcpp::R_PPC64_TOCSAVE
:
5426 case elfcpp::R_POWERPC_TLS
:
5429 case elfcpp::R_PPC64_TOC
:
5431 Output_data_got_powerpc
<size
, big_endian
>* got
5432 = target
->got_section(symtab
, layout
);
5433 if (parameters
->options().output_is_position_independent())
5435 Address off
= reloc
.get_r_offset();
5437 && target
->abiversion() < 2
5438 && data_shndx
== ppc_object
->opd_shndx()
5439 && ppc_object
->get_opd_discard(off
- 8))
5442 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5443 Powerpc_relobj
<size
, big_endian
>* symobj
= ppc_object
;
5444 rela_dyn
->add_output_section_relative(got
->output_section(),
5445 elfcpp::R_POWERPC_RELATIVE
,
5447 object
, data_shndx
, off
,
5448 symobj
->toc_base_offset());
5453 case elfcpp::R_PPC64_ADDR64
:
5454 case elfcpp::R_PPC64_UADDR64
:
5455 case elfcpp::R_POWERPC_ADDR32
:
5456 case elfcpp::R_POWERPC_UADDR32
:
5457 case elfcpp::R_POWERPC_ADDR24
:
5458 case elfcpp::R_POWERPC_ADDR16
:
5459 case elfcpp::R_POWERPC_ADDR16_LO
:
5460 case elfcpp::R_POWERPC_ADDR16_HI
:
5461 case elfcpp::R_POWERPC_ADDR16_HA
:
5462 case elfcpp::R_POWERPC_UADDR16
:
5463 case elfcpp::R_PPC64_ADDR16_HIGH
:
5464 case elfcpp::R_PPC64_ADDR16_HIGHA
:
5465 case elfcpp::R_PPC64_ADDR16_HIGHER
:
5466 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
5467 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
5468 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
5469 case elfcpp::R_PPC64_ADDR16_DS
:
5470 case elfcpp::R_PPC64_ADDR16_LO_DS
:
5471 case elfcpp::R_POWERPC_ADDR14
:
5472 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
5473 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
5474 // If building a shared library (or a position-independent
5475 // executable), we need to create a dynamic relocation for
5477 if (parameters
->options().output_is_position_independent()
5478 || (size
== 64 && is_ifunc
&& target
->abiversion() < 2))
5480 Reloc_section
* rela_dyn
= target
->rela_dyn_section(symtab
, layout
,
5482 if ((size
== 32 && r_type
== elfcpp::R_POWERPC_ADDR32
)
5483 || (size
== 64 && r_type
== elfcpp::R_PPC64_ADDR64
))
5485 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5486 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
5487 : elfcpp::R_POWERPC_RELATIVE
);
5488 rela_dyn
->add_local_relative(object
, r_sym
, dynrel
,
5489 output_section
, data_shndx
,
5490 reloc
.get_r_offset(),
5491 reloc
.get_r_addend(), false);
5495 check_non_pic(object
, r_type
);
5496 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5497 rela_dyn
->add_local(object
, r_sym
, r_type
, output_section
,
5498 data_shndx
, reloc
.get_r_offset(),
5499 reloc
.get_r_addend());
5504 case elfcpp::R_POWERPC_REL24
:
5505 case elfcpp::R_PPC_PLTREL24
:
5506 case elfcpp::R_PPC_LOCAL24PC
:
5507 case elfcpp::R_POWERPC_REL14
:
5508 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
5509 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
5511 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
5512 r_type
, elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
5513 reloc
.get_r_addend());
5516 case elfcpp::R_PPC64_REL64
:
5517 case elfcpp::R_POWERPC_REL32
:
5518 case elfcpp::R_POWERPC_REL16
:
5519 case elfcpp::R_POWERPC_REL16_LO
:
5520 case elfcpp::R_POWERPC_REL16_HI
:
5521 case elfcpp::R_POWERPC_REL16_HA
:
5522 case elfcpp::R_POWERPC_SECTOFF
:
5523 case elfcpp::R_POWERPC_SECTOFF_LO
:
5524 case elfcpp::R_POWERPC_SECTOFF_HI
:
5525 case elfcpp::R_POWERPC_SECTOFF_HA
:
5526 case elfcpp::R_PPC64_SECTOFF_DS
:
5527 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
5528 case elfcpp::R_POWERPC_TPREL16
:
5529 case elfcpp::R_POWERPC_TPREL16_LO
:
5530 case elfcpp::R_POWERPC_TPREL16_HI
:
5531 case elfcpp::R_POWERPC_TPREL16_HA
:
5532 case elfcpp::R_PPC64_TPREL16_DS
:
5533 case elfcpp::R_PPC64_TPREL16_LO_DS
:
5534 case elfcpp::R_PPC64_TPREL16_HIGH
:
5535 case elfcpp::R_PPC64_TPREL16_HIGHA
:
5536 case elfcpp::R_PPC64_TPREL16_HIGHER
:
5537 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
5538 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
5539 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
5540 case elfcpp::R_POWERPC_DTPREL16
:
5541 case elfcpp::R_POWERPC_DTPREL16_LO
:
5542 case elfcpp::R_POWERPC_DTPREL16_HI
:
5543 case elfcpp::R_POWERPC_DTPREL16_HA
:
5544 case elfcpp::R_PPC64_DTPREL16_DS
:
5545 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
5546 case elfcpp::R_PPC64_DTPREL16_HIGH
:
5547 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
5548 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
5549 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
5550 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
5551 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
5552 case elfcpp::R_PPC64_TLSGD
:
5553 case elfcpp::R_PPC64_TLSLD
:
5554 case elfcpp::R_PPC64_ADDR64_LOCAL
:
5557 case elfcpp::R_POWERPC_GOT16
:
5558 case elfcpp::R_POWERPC_GOT16_LO
:
5559 case elfcpp::R_POWERPC_GOT16_HI
:
5560 case elfcpp::R_POWERPC_GOT16_HA
:
5561 case elfcpp::R_PPC64_GOT16_DS
:
5562 case elfcpp::R_PPC64_GOT16_LO_DS
:
5564 // The symbol requires a GOT entry.
5565 Output_data_got_powerpc
<size
, big_endian
>* got
5566 = target
->got_section(symtab
, layout
);
5567 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5569 if (!parameters
->options().output_is_position_independent())
5571 if ((size
== 32 && is_ifunc
)
5572 || (size
== 64 && target
->abiversion() >= 2))
5573 got
->add_local_plt(object
, r_sym
, GOT_TYPE_STANDARD
);
5575 got
->add_local(object
, r_sym
, GOT_TYPE_STANDARD
);
5577 else if (!object
->local_has_got_offset(r_sym
, GOT_TYPE_STANDARD
))
5579 // If we are generating a shared object or a pie, this
5580 // symbol's GOT entry will be set by a dynamic relocation.
5582 off
= got
->add_constant(0);
5583 object
->set_local_got_offset(r_sym
, GOT_TYPE_STANDARD
, off
);
5585 Reloc_section
* rela_dyn
= target
->rela_dyn_section(symtab
, layout
,
5587 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
5588 : elfcpp::R_POWERPC_RELATIVE
);
5589 rela_dyn
->add_local_relative(object
, r_sym
, dynrel
,
5590 got
, off
, 0, false);
5595 case elfcpp::R_PPC64_TOC16
:
5596 case elfcpp::R_PPC64_TOC16_LO
:
5597 case elfcpp::R_PPC64_TOC16_HI
:
5598 case elfcpp::R_PPC64_TOC16_HA
:
5599 case elfcpp::R_PPC64_TOC16_DS
:
5600 case elfcpp::R_PPC64_TOC16_LO_DS
:
5601 // We need a GOT section.
5602 target
->got_section(symtab
, layout
);
5605 case elfcpp::R_POWERPC_GOT_TLSGD16
:
5606 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
5607 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
5608 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
5610 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(true);
5611 if (tls_type
== tls::TLSOPT_NONE
)
5613 Output_data_got_powerpc
<size
, big_endian
>* got
5614 = target
->got_section(symtab
, layout
);
5615 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5616 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5617 got
->add_local_tls_pair(object
, r_sym
, GOT_TYPE_TLSGD
,
5618 rela_dyn
, elfcpp::R_POWERPC_DTPMOD
);
5620 else if (tls_type
== tls::TLSOPT_TO_LE
)
5622 // no GOT relocs needed for Local Exec.
5629 case elfcpp::R_POWERPC_GOT_TLSLD16
:
5630 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
5631 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
5632 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
5634 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
5635 if (tls_type
== tls::TLSOPT_NONE
)
5636 target
->tlsld_got_offset(symtab
, layout
, object
);
5637 else if (tls_type
== tls::TLSOPT_TO_LE
)
5639 // no GOT relocs needed for Local Exec.
5640 if (parameters
->options().emit_relocs())
5642 Output_section
* os
= layout
->tls_segment()->first_section();
5643 gold_assert(os
!= NULL
);
5644 os
->set_needs_symtab_index();
5652 case elfcpp::R_POWERPC_GOT_DTPREL16
:
5653 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
5654 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
5655 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
5657 Output_data_got_powerpc
<size
, big_endian
>* got
5658 = target
->got_section(symtab
, layout
);
5659 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5660 got
->add_local_tls(object
, r_sym
, GOT_TYPE_DTPREL
);
5664 case elfcpp::R_POWERPC_GOT_TPREL16
:
5665 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
5666 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
5667 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
5669 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(true);
5670 if (tls_type
== tls::TLSOPT_NONE
)
5672 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5673 if (!object
->local_has_got_offset(r_sym
, GOT_TYPE_TPREL
))
5675 Output_data_got_powerpc
<size
, big_endian
>* got
5676 = target
->got_section(symtab
, layout
);
5677 unsigned int off
= got
->add_constant(0);
5678 object
->set_local_got_offset(r_sym
, GOT_TYPE_TPREL
, off
);
5680 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5681 rela_dyn
->add_symbolless_local_addend(object
, r_sym
,
5682 elfcpp::R_POWERPC_TPREL
,
5686 else if (tls_type
== tls::TLSOPT_TO_LE
)
5688 // no GOT relocs needed for Local Exec.
5696 unsupported_reloc_local(object
, r_type
);
5702 case elfcpp::R_POWERPC_GOT_TLSLD16
:
5703 case elfcpp::R_POWERPC_GOT_TLSGD16
:
5704 case elfcpp::R_POWERPC_GOT_TPREL16
:
5705 case elfcpp::R_POWERPC_GOT_DTPREL16
:
5706 case elfcpp::R_POWERPC_GOT16
:
5707 case elfcpp::R_PPC64_GOT16_DS
:
5708 case elfcpp::R_PPC64_TOC16
:
5709 case elfcpp::R_PPC64_TOC16_DS
:
5710 ppc_object
->set_has_small_toc_reloc();
5716 // Report an unsupported relocation against a global symbol.
5718 template<int size
, bool big_endian
>
5720 Target_powerpc
<size
, big_endian
>::Scan::unsupported_reloc_global(
5721 Sized_relobj_file
<size
, big_endian
>* object
,
5722 unsigned int r_type
,
5725 gold_error(_("%s: unsupported reloc %u against global symbol %s"),
5726 object
->name().c_str(), r_type
, gsym
->demangled_name().c_str());
5729 // Scan a relocation for a global symbol.
5731 template<int size
, bool big_endian
>
5733 Target_powerpc
<size
, big_endian
>::Scan::global(
5734 Symbol_table
* symtab
,
5736 Target_powerpc
<size
, big_endian
>* target
,
5737 Sized_relobj_file
<size
, big_endian
>* object
,
5738 unsigned int data_shndx
,
5739 Output_section
* output_section
,
5740 const elfcpp::Rela
<size
, big_endian
>& reloc
,
5741 unsigned int r_type
,
5744 if (this->maybe_skip_tls_get_addr_call(r_type
, gsym
) == Track_tls::SKIP
)
5747 if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
5748 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
5750 this->expect_tls_get_addr_call();
5751 const bool final
= gsym
->final_value_is_known();
5752 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
5753 if (tls_type
!= tls::TLSOPT_NONE
)
5754 this->skip_next_tls_get_addr_call();
5756 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
5757 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
5759 this->expect_tls_get_addr_call();
5760 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
5761 if (tls_type
!= tls::TLSOPT_NONE
)
5762 this->skip_next_tls_get_addr_call();
5765 Powerpc_relobj
<size
, big_endian
>* ppc_object
5766 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
5768 // A STT_GNU_IFUNC symbol may require a PLT entry.
5769 bool is_ifunc
= gsym
->type() == elfcpp::STT_GNU_IFUNC
;
5770 bool pushed_ifunc
= false;
5771 if (is_ifunc
&& this->reloc_needs_plt_for_ifunc(target
, object
, r_type
, true))
5773 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
5774 r_type
, elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
5775 reloc
.get_r_addend());
5776 target
->make_plt_entry(symtab
, layout
, gsym
);
5777 pushed_ifunc
= true;
5782 case elfcpp::R_POWERPC_NONE
:
5783 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
5784 case elfcpp::R_POWERPC_GNU_VTENTRY
:
5785 case elfcpp::R_PPC_LOCAL24PC
:
5786 case elfcpp::R_POWERPC_TLS
:
5789 case elfcpp::R_PPC64_TOC
:
5791 Output_data_got_powerpc
<size
, big_endian
>* got
5792 = target
->got_section(symtab
, layout
);
5793 if (parameters
->options().output_is_position_independent())
5795 Address off
= reloc
.get_r_offset();
5797 && data_shndx
== ppc_object
->opd_shndx()
5798 && ppc_object
->get_opd_discard(off
- 8))
5801 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5802 Powerpc_relobj
<size
, big_endian
>* symobj
= ppc_object
;
5803 if (data_shndx
!= ppc_object
->opd_shndx())
5804 symobj
= static_cast
5805 <Powerpc_relobj
<size
, big_endian
>*>(gsym
->object());
5806 rela_dyn
->add_output_section_relative(got
->output_section(),
5807 elfcpp::R_POWERPC_RELATIVE
,
5809 object
, data_shndx
, off
,
5810 symobj
->toc_base_offset());
5815 case elfcpp::R_PPC64_ADDR64
:
5817 && target
->abiversion() < 2
5818 && data_shndx
== ppc_object
->opd_shndx()
5819 && (gsym
->is_defined_in_discarded_section()
5820 || gsym
->object() != object
))
5822 ppc_object
->set_opd_discard(reloc
.get_r_offset());
5826 case elfcpp::R_PPC64_UADDR64
:
5827 case elfcpp::R_POWERPC_ADDR32
:
5828 case elfcpp::R_POWERPC_UADDR32
:
5829 case elfcpp::R_POWERPC_ADDR24
:
5830 case elfcpp::R_POWERPC_ADDR16
:
5831 case elfcpp::R_POWERPC_ADDR16_LO
:
5832 case elfcpp::R_POWERPC_ADDR16_HI
:
5833 case elfcpp::R_POWERPC_ADDR16_HA
:
5834 case elfcpp::R_POWERPC_UADDR16
:
5835 case elfcpp::R_PPC64_ADDR16_HIGH
:
5836 case elfcpp::R_PPC64_ADDR16_HIGHA
:
5837 case elfcpp::R_PPC64_ADDR16_HIGHER
:
5838 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
5839 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
5840 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
5841 case elfcpp::R_PPC64_ADDR16_DS
:
5842 case elfcpp::R_PPC64_ADDR16_LO_DS
:
5843 case elfcpp::R_POWERPC_ADDR14
:
5844 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
5845 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
5847 // Make a PLT entry if necessary.
5848 if (gsym
->needs_plt_entry())
5850 // Since this is not a PC-relative relocation, we may be
5851 // taking the address of a function. In that case we need to
5852 // set the entry in the dynamic symbol table to the address of
5853 // the PLT call stub.
5854 bool need_ifunc_plt
= false;
5855 if ((size
== 32 || target
->abiversion() >= 2)
5856 && gsym
->is_from_dynobj()
5857 && !parameters
->options().output_is_position_independent())
5859 gsym
->set_needs_dynsym_value();
5860 need_ifunc_plt
= true;
5862 if (!is_ifunc
|| (!pushed_ifunc
&& need_ifunc_plt
))
5864 target
->push_branch(ppc_object
, data_shndx
,
5865 reloc
.get_r_offset(), r_type
,
5866 elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
5867 reloc
.get_r_addend());
5868 target
->make_plt_entry(symtab
, layout
, gsym
);
5871 // Make a dynamic relocation if necessary.
5872 if (gsym
->needs_dynamic_reloc(Scan::get_reference_flags(r_type
, target
))
5873 || (size
== 64 && is_ifunc
&& target
->abiversion() < 2))
5875 if (!parameters
->options().output_is_position_independent()
5876 && gsym
->may_need_copy_reloc())
5878 target
->copy_reloc(symtab
, layout
, object
,
5879 data_shndx
, output_section
, gsym
, reloc
);
5881 else if ((((size
== 32
5882 && r_type
== elfcpp::R_POWERPC_ADDR32
)
5884 && r_type
== elfcpp::R_PPC64_ADDR64
5885 && target
->abiversion() >= 2))
5886 && gsym
->can_use_relative_reloc(false)
5887 && !(gsym
->visibility() == elfcpp::STV_PROTECTED
5888 && parameters
->options().shared()))
5890 && r_type
== elfcpp::R_PPC64_ADDR64
5891 && target
->abiversion() < 2
5892 && (gsym
->can_use_relative_reloc(false)
5893 || data_shndx
== ppc_object
->opd_shndx())))
5895 Reloc_section
* rela_dyn
5896 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
5897 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
5898 : elfcpp::R_POWERPC_RELATIVE
);
5899 rela_dyn
->add_symbolless_global_addend(
5900 gsym
, dynrel
, output_section
, object
, data_shndx
,
5901 reloc
.get_r_offset(), reloc
.get_r_addend());
5905 Reloc_section
* rela_dyn
5906 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
5907 check_non_pic(object
, r_type
);
5908 rela_dyn
->add_global(gsym
, r_type
, output_section
,
5910 reloc
.get_r_offset(),
5911 reloc
.get_r_addend());
5917 case elfcpp::R_PPC_PLTREL24
:
5918 case elfcpp::R_POWERPC_REL24
:
5921 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
5923 elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
5924 reloc
.get_r_addend());
5925 if (gsym
->needs_plt_entry()
5926 || (!gsym
->final_value_is_known()
5927 && (gsym
->is_undefined()
5928 || gsym
->is_from_dynobj()
5929 || gsym
->is_preemptible())))
5930 target
->make_plt_entry(symtab
, layout
, gsym
);
5934 case elfcpp::R_PPC64_REL64
:
5935 case elfcpp::R_POWERPC_REL32
:
5936 // Make a dynamic relocation if necessary.
5937 if (gsym
->needs_dynamic_reloc(Scan::get_reference_flags(r_type
, target
)))
5939 if (!parameters
->options().output_is_position_independent()
5940 && gsym
->may_need_copy_reloc())
5942 target
->copy_reloc(symtab
, layout
, object
,
5943 data_shndx
, output_section
, gsym
,
5948 Reloc_section
* rela_dyn
5949 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
5950 check_non_pic(object
, r_type
);
5951 rela_dyn
->add_global(gsym
, r_type
, output_section
, object
,
5952 data_shndx
, reloc
.get_r_offset(),
5953 reloc
.get_r_addend());
5958 case elfcpp::R_POWERPC_REL14
:
5959 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
5960 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
5962 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
5963 r_type
, elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
5964 reloc
.get_r_addend());
5967 case elfcpp::R_POWERPC_REL16
:
5968 case elfcpp::R_POWERPC_REL16_LO
:
5969 case elfcpp::R_POWERPC_REL16_HI
:
5970 case elfcpp::R_POWERPC_REL16_HA
:
5971 case elfcpp::R_POWERPC_SECTOFF
:
5972 case elfcpp::R_POWERPC_SECTOFF_LO
:
5973 case elfcpp::R_POWERPC_SECTOFF_HI
:
5974 case elfcpp::R_POWERPC_SECTOFF_HA
:
5975 case elfcpp::R_PPC64_SECTOFF_DS
:
5976 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
5977 case elfcpp::R_POWERPC_TPREL16
:
5978 case elfcpp::R_POWERPC_TPREL16_LO
:
5979 case elfcpp::R_POWERPC_TPREL16_HI
:
5980 case elfcpp::R_POWERPC_TPREL16_HA
:
5981 case elfcpp::R_PPC64_TPREL16_DS
:
5982 case elfcpp::R_PPC64_TPREL16_LO_DS
:
5983 case elfcpp::R_PPC64_TPREL16_HIGH
:
5984 case elfcpp::R_PPC64_TPREL16_HIGHA
:
5985 case elfcpp::R_PPC64_TPREL16_HIGHER
:
5986 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
5987 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
5988 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
5989 case elfcpp::R_POWERPC_DTPREL16
:
5990 case elfcpp::R_POWERPC_DTPREL16_LO
:
5991 case elfcpp::R_POWERPC_DTPREL16_HI
:
5992 case elfcpp::R_POWERPC_DTPREL16_HA
:
5993 case elfcpp::R_PPC64_DTPREL16_DS
:
5994 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
5995 case elfcpp::R_PPC64_DTPREL16_HIGH
:
5996 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
5997 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
5998 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
5999 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
6000 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
6001 case elfcpp::R_PPC64_TLSGD
:
6002 case elfcpp::R_PPC64_TLSLD
:
6003 case elfcpp::R_PPC64_ADDR64_LOCAL
:
6006 case elfcpp::R_POWERPC_GOT16
:
6007 case elfcpp::R_POWERPC_GOT16_LO
:
6008 case elfcpp::R_POWERPC_GOT16_HI
:
6009 case elfcpp::R_POWERPC_GOT16_HA
:
6010 case elfcpp::R_PPC64_GOT16_DS
:
6011 case elfcpp::R_PPC64_GOT16_LO_DS
:
6013 // The symbol requires a GOT entry.
6014 Output_data_got_powerpc
<size
, big_endian
>* got
;
6016 got
= target
->got_section(symtab
, layout
);
6017 if (gsym
->final_value_is_known())
6019 if ((size
== 32 && is_ifunc
)
6020 || (size
== 64 && target
->abiversion() >= 2))
6021 got
->add_global_plt(gsym
, GOT_TYPE_STANDARD
);
6023 got
->add_global(gsym
, GOT_TYPE_STANDARD
);
6025 else if (!gsym
->has_got_offset(GOT_TYPE_STANDARD
))
6027 // If we are generating a shared object or a pie, this
6028 // symbol's GOT entry will be set by a dynamic relocation.
6029 unsigned int off
= got
->add_constant(0);
6030 gsym
->set_got_offset(GOT_TYPE_STANDARD
, off
);
6032 Reloc_section
* rela_dyn
6033 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
6035 if (gsym
->can_use_relative_reloc(false)
6037 || target
->abiversion() >= 2)
6038 && gsym
->visibility() == elfcpp::STV_PROTECTED
6039 && parameters
->options().shared()))
6041 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
6042 : elfcpp::R_POWERPC_RELATIVE
);
6043 rela_dyn
->add_global_relative(gsym
, dynrel
, got
, off
, 0, false);
6047 unsigned int dynrel
= elfcpp::R_POWERPC_GLOB_DAT
;
6048 rela_dyn
->add_global(gsym
, dynrel
, got
, off
, 0);
6054 case elfcpp::R_PPC64_TOC16
:
6055 case elfcpp::R_PPC64_TOC16_LO
:
6056 case elfcpp::R_PPC64_TOC16_HI
:
6057 case elfcpp::R_PPC64_TOC16_HA
:
6058 case elfcpp::R_PPC64_TOC16_DS
:
6059 case elfcpp::R_PPC64_TOC16_LO_DS
:
6060 // We need a GOT section.
6061 target
->got_section(symtab
, layout
);
6064 case elfcpp::R_POWERPC_GOT_TLSGD16
:
6065 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
6066 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
6067 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
6069 const bool final
= gsym
->final_value_is_known();
6070 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
6071 if (tls_type
== tls::TLSOPT_NONE
)
6073 Output_data_got_powerpc
<size
, big_endian
>* got
6074 = target
->got_section(symtab
, layout
);
6075 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
6076 got
->add_global_pair_with_rel(gsym
, GOT_TYPE_TLSGD
, rela_dyn
,
6077 elfcpp::R_POWERPC_DTPMOD
,
6078 elfcpp::R_POWERPC_DTPREL
);
6080 else if (tls_type
== tls::TLSOPT_TO_IE
)
6082 if (!gsym
->has_got_offset(GOT_TYPE_TPREL
))
6084 Output_data_got_powerpc
<size
, big_endian
>* got
6085 = target
->got_section(symtab
, layout
);
6086 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
6087 if (gsym
->is_undefined()
6088 || gsym
->is_from_dynobj())
6090 got
->add_global_with_rel(gsym
, GOT_TYPE_TPREL
, rela_dyn
,
6091 elfcpp::R_POWERPC_TPREL
);
6095 unsigned int off
= got
->add_constant(0);
6096 gsym
->set_got_offset(GOT_TYPE_TPREL
, off
);
6097 unsigned int dynrel
= elfcpp::R_POWERPC_TPREL
;
6098 rela_dyn
->add_symbolless_global_addend(gsym
, dynrel
,
6103 else if (tls_type
== tls::TLSOPT_TO_LE
)
6105 // no GOT relocs needed for Local Exec.
6112 case elfcpp::R_POWERPC_GOT_TLSLD16
:
6113 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
6114 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
6115 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
6117 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
6118 if (tls_type
== tls::TLSOPT_NONE
)
6119 target
->tlsld_got_offset(symtab
, layout
, object
);
6120 else if (tls_type
== tls::TLSOPT_TO_LE
)
6122 // no GOT relocs needed for Local Exec.
6123 if (parameters
->options().emit_relocs())
6125 Output_section
* os
= layout
->tls_segment()->first_section();
6126 gold_assert(os
!= NULL
);
6127 os
->set_needs_symtab_index();
6135 case elfcpp::R_POWERPC_GOT_DTPREL16
:
6136 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
6137 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
6138 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
6140 Output_data_got_powerpc
<size
, big_endian
>* got
6141 = target
->got_section(symtab
, layout
);
6142 if (!gsym
->final_value_is_known()
6143 && (gsym
->is_from_dynobj()
6144 || gsym
->is_undefined()
6145 || gsym
->is_preemptible()))
6146 got
->add_global_with_rel(gsym
, GOT_TYPE_DTPREL
,
6147 target
->rela_dyn_section(layout
),
6148 elfcpp::R_POWERPC_DTPREL
);
6150 got
->add_global_tls(gsym
, GOT_TYPE_DTPREL
);
6154 case elfcpp::R_POWERPC_GOT_TPREL16
:
6155 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
6156 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
6157 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
6159 const bool final
= gsym
->final_value_is_known();
6160 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
6161 if (tls_type
== tls::TLSOPT_NONE
)
6163 if (!gsym
->has_got_offset(GOT_TYPE_TPREL
))
6165 Output_data_got_powerpc
<size
, big_endian
>* got
6166 = target
->got_section(symtab
, layout
);
6167 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
6168 if (gsym
->is_undefined()
6169 || gsym
->is_from_dynobj())
6171 got
->add_global_with_rel(gsym
, GOT_TYPE_TPREL
, rela_dyn
,
6172 elfcpp::R_POWERPC_TPREL
);
6176 unsigned int off
= got
->add_constant(0);
6177 gsym
->set_got_offset(GOT_TYPE_TPREL
, off
);
6178 unsigned int dynrel
= elfcpp::R_POWERPC_TPREL
;
6179 rela_dyn
->add_symbolless_global_addend(gsym
, dynrel
,
6184 else if (tls_type
== tls::TLSOPT_TO_LE
)
6186 // no GOT relocs needed for Local Exec.
6194 unsupported_reloc_global(object
, r_type
, gsym
);
6200 case elfcpp::R_POWERPC_GOT_TLSLD16
:
6201 case elfcpp::R_POWERPC_GOT_TLSGD16
:
6202 case elfcpp::R_POWERPC_GOT_TPREL16
:
6203 case elfcpp::R_POWERPC_GOT_DTPREL16
:
6204 case elfcpp::R_POWERPC_GOT16
:
6205 case elfcpp::R_PPC64_GOT16_DS
:
6206 case elfcpp::R_PPC64_TOC16
:
6207 case elfcpp::R_PPC64_TOC16_DS
:
6208 ppc_object
->set_has_small_toc_reloc();
6214 // Process relocations for gc.
6216 template<int size
, bool big_endian
>
6218 Target_powerpc
<size
, big_endian
>::gc_process_relocs(
6219 Symbol_table
* symtab
,
6221 Sized_relobj_file
<size
, big_endian
>* object
,
6222 unsigned int data_shndx
,
6224 const unsigned char* prelocs
,
6226 Output_section
* output_section
,
6227 bool needs_special_offset_handling
,
6228 size_t local_symbol_count
,
6229 const unsigned char* plocal_symbols
)
6231 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
6232 typedef typename Target_powerpc
<size
, big_endian
>::Scan Scan
;
6233 Powerpc_relobj
<size
, big_endian
>* ppc_object
6234 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
6236 ppc_object
->set_opd_valid();
6237 if (size
== 64 && data_shndx
== ppc_object
->opd_shndx())
6239 typename Powerpc_relobj
<size
, big_endian
>::Access_from::iterator p
;
6240 for (p
= ppc_object
->access_from_map()->begin();
6241 p
!= ppc_object
->access_from_map()->end();
6244 Address dst_off
= p
->first
;
6245 unsigned int dst_indx
= ppc_object
->get_opd_ent(dst_off
);
6246 typename Powerpc_relobj
<size
, big_endian
>::Section_refs::iterator s
;
6247 for (s
= p
->second
.begin(); s
!= p
->second
.end(); ++s
)
6249 Object
* src_obj
= s
->first
;
6250 unsigned int src_indx
= s
->second
;
6251 symtab
->gc()->add_reference(src_obj
, src_indx
,
6252 ppc_object
, dst_indx
);
6256 ppc_object
->access_from_map()->clear();
6257 ppc_object
->process_gc_mark(symtab
);
6258 // Don't look at .opd relocs as .opd will reference everything.
6262 gold::gc_process_relocs
<size
, big_endian
, Powerpc
, elfcpp::SHT_RELA
, Scan
,
6263 typename
Target_powerpc::Relocatable_size_for_reloc
>(
6272 needs_special_offset_handling
,
6277 // Handle target specific gc actions when adding a gc reference from
6278 // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX
6279 // and DST_OFF. For powerpc64, this adds a referenc to the code
6280 // section of a function descriptor.
6282 template<int size
, bool big_endian
>
6284 Target_powerpc
<size
, big_endian
>::do_gc_add_reference(
6285 Symbol_table
* symtab
,
6287 unsigned int src_shndx
,
6289 unsigned int dst_shndx
,
6290 Address dst_off
) const
6292 if (size
!= 64 || dst_obj
->is_dynamic())
6295 Powerpc_relobj
<size
, big_endian
>* ppc_object
6296 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(dst_obj
);
6297 if (dst_shndx
!= 0 && dst_shndx
== ppc_object
->opd_shndx())
6299 if (ppc_object
->opd_valid())
6301 dst_shndx
= ppc_object
->get_opd_ent(dst_off
);
6302 symtab
->gc()->add_reference(src_obj
, src_shndx
, dst_obj
, dst_shndx
);
6306 // If we haven't run scan_opd_relocs, we must delay
6307 // processing this function descriptor reference.
6308 ppc_object
->add_reference(src_obj
, src_shndx
, dst_off
);
6313 // Add any special sections for this symbol to the gc work list.
6314 // For powerpc64, this adds the code section of a function
6317 template<int size
, bool big_endian
>
6319 Target_powerpc
<size
, big_endian
>::do_gc_mark_symbol(
6320 Symbol_table
* symtab
,
6325 Powerpc_relobj
<size
, big_endian
>* ppc_object
6326 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(sym
->object());
6328 unsigned int shndx
= sym
->shndx(&is_ordinary
);
6329 if (is_ordinary
&& shndx
!= 0 && shndx
== ppc_object
->opd_shndx())
6331 Sized_symbol
<size
>* gsym
= symtab
->get_sized_symbol
<size
>(sym
);
6332 Address dst_off
= gsym
->value();
6333 if (ppc_object
->opd_valid())
6335 unsigned int dst_indx
= ppc_object
->get_opd_ent(dst_off
);
6336 symtab
->gc()->worklist().push(Section_id(ppc_object
, dst_indx
));
6339 ppc_object
->add_gc_mark(dst_off
);
6344 // For a symbol location in .opd, set LOC to the location of the
6347 template<int size
, bool big_endian
>
6349 Target_powerpc
<size
, big_endian
>::do_function_location(
6350 Symbol_location
* loc
) const
6352 if (size
== 64 && loc
->shndx
!= 0)
6354 if (loc
->object
->is_dynamic())
6356 Powerpc_dynobj
<size
, big_endian
>* ppc_object
6357 = static_cast<Powerpc_dynobj
<size
, big_endian
>*>(loc
->object
);
6358 if (loc
->shndx
== ppc_object
->opd_shndx())
6361 Address off
= loc
->offset
- ppc_object
->opd_address();
6362 loc
->shndx
= ppc_object
->get_opd_ent(off
, &dest_off
);
6363 loc
->offset
= dest_off
;
6368 const Powerpc_relobj
<size
, big_endian
>* ppc_object
6369 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>(loc
->object
);
6370 if (loc
->shndx
== ppc_object
->opd_shndx())
6373 loc
->shndx
= ppc_object
->get_opd_ent(loc
->offset
, &dest_off
);
6374 loc
->offset
= dest_off
;
6380 // Scan relocations for a section.
6382 template<int size
, bool big_endian
>
6384 Target_powerpc
<size
, big_endian
>::scan_relocs(
6385 Symbol_table
* symtab
,
6387 Sized_relobj_file
<size
, big_endian
>* object
,
6388 unsigned int data_shndx
,
6389 unsigned int sh_type
,
6390 const unsigned char* prelocs
,
6392 Output_section
* output_section
,
6393 bool needs_special_offset_handling
,
6394 size_t local_symbol_count
,
6395 const unsigned char* plocal_symbols
)
6397 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
6398 typedef typename Target_powerpc
<size
, big_endian
>::Scan Scan
;
6400 if (sh_type
== elfcpp::SHT_REL
)
6402 gold_error(_("%s: unsupported REL reloc section"),
6403 object
->name().c_str());
6407 gold::scan_relocs
<size
, big_endian
, Powerpc
, elfcpp::SHT_RELA
, Scan
>(
6416 needs_special_offset_handling
,
6421 // Functor class for processing the global symbol table.
6422 // Removes symbols defined on discarded opd entries.
6424 template<bool big_endian
>
6425 class Global_symbol_visitor_opd
6428 Global_symbol_visitor_opd()
6432 operator()(Sized_symbol
<64>* sym
)
6434 if (sym
->has_symtab_index()
6435 || sym
->source() != Symbol::FROM_OBJECT
6436 || !sym
->in_real_elf())
6439 if (sym
->object()->is_dynamic())
6442 Powerpc_relobj
<64, big_endian
>* symobj
6443 = static_cast<Powerpc_relobj
<64, big_endian
>*>(sym
->object());
6444 if (symobj
->opd_shndx() == 0)
6448 unsigned int shndx
= sym
->shndx(&is_ordinary
);
6449 if (shndx
== symobj
->opd_shndx()
6450 && symobj
->get_opd_discard(sym
->value()))
6451 sym
->set_symtab_index(-1U);
6455 template<int size
, bool big_endian
>
6457 Target_powerpc
<size
, big_endian
>::define_save_restore_funcs(
6459 Symbol_table
* symtab
)
6463 Output_data_save_res
<64, big_endian
>* savres
6464 = new Output_data_save_res
<64, big_endian
>(symtab
);
6465 layout
->add_output_section_data(".text", elfcpp::SHT_PROGBITS
,
6466 elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
,
6467 savres
, ORDER_TEXT
, false);
6471 // Sort linker created .got section first (for the header), then input
6472 // sections belonging to files using small model code.
6474 template<bool big_endian
>
6475 class Sort_toc_sections
6479 operator()(const Output_section::Input_section
& is1
,
6480 const Output_section::Input_section
& is2
) const
6482 if (!is1
.is_input_section() && is2
.is_input_section())
6485 = (is1
.is_input_section()
6486 && (static_cast<const Powerpc_relobj
<64, big_endian
>*>(is1
.relobj())
6487 ->has_small_toc_reloc()));
6489 = (is2
.is_input_section()
6490 && (static_cast<const Powerpc_relobj
<64, big_endian
>*>(is2
.relobj())
6491 ->has_small_toc_reloc()));
6492 return small1
&& !small2
;
6496 // Finalize the sections.
6498 template<int size
, bool big_endian
>
6500 Target_powerpc
<size
, big_endian
>::do_finalize_sections(
6502 const Input_objects
*,
6503 Symbol_table
* symtab
)
6505 if (parameters
->doing_static_link())
6507 // At least some versions of glibc elf-init.o have a strong
6508 // reference to __rela_iplt marker syms. A weak ref would be
6510 if (this->iplt_
!= NULL
)
6512 Reloc_section
* rel
= this->iplt_
->rel_plt();
6513 symtab
->define_in_output_data("__rela_iplt_start", NULL
,
6514 Symbol_table::PREDEFINED
, rel
, 0, 0,
6515 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
6516 elfcpp::STV_HIDDEN
, 0, false, true);
6517 symtab
->define_in_output_data("__rela_iplt_end", NULL
,
6518 Symbol_table::PREDEFINED
, rel
, 0, 0,
6519 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
6520 elfcpp::STV_HIDDEN
, 0, true, true);
6524 symtab
->define_as_constant("__rela_iplt_start", NULL
,
6525 Symbol_table::PREDEFINED
, 0, 0,
6526 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
6527 elfcpp::STV_HIDDEN
, 0, true, false);
6528 symtab
->define_as_constant("__rela_iplt_end", NULL
,
6529 Symbol_table::PREDEFINED
, 0, 0,
6530 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
6531 elfcpp::STV_HIDDEN
, 0, true, false);
6537 typedef Global_symbol_visitor_opd
<big_endian
> Symbol_visitor
;
6538 symtab
->for_all_symbols
<64, Symbol_visitor
>(Symbol_visitor());
6540 if (!parameters
->options().relocatable())
6542 this->define_save_restore_funcs(layout
, symtab
);
6544 // Annoyingly, we need to make these sections now whether or
6545 // not we need them. If we delay until do_relax then we
6546 // need to mess with the relaxation machinery checkpointing.
6547 this->got_section(symtab
, layout
);
6548 this->make_brlt_section(layout
);
6550 if (parameters
->options().toc_sort())
6552 Output_section
* os
= this->got_
->output_section();
6553 if (os
!= NULL
&& os
->input_sections().size() > 1)
6554 std::stable_sort(os
->input_sections().begin(),
6555 os
->input_sections().end(),
6556 Sort_toc_sections
<big_endian
>());
6561 // Fill in some more dynamic tags.
6562 Output_data_dynamic
* odyn
= layout
->dynamic_data();
6565 const Reloc_section
* rel_plt
= (this->plt_
== NULL
6567 : this->plt_
->rel_plt());
6568 layout
->add_target_dynamic_tags(false, this->plt_
, rel_plt
,
6569 this->rela_dyn_
, true, size
== 32);
6573 if (this->got_
!= NULL
)
6575 this->got_
->finalize_data_size();
6576 odyn
->add_section_plus_offset(elfcpp::DT_PPC_GOT
,
6577 this->got_
, this->got_
->g_o_t());
6582 if (this->glink_
!= NULL
)
6584 this->glink_
->finalize_data_size();
6585 odyn
->add_section_plus_offset(elfcpp::DT_PPC64_GLINK
,
6587 (this->glink_
->pltresolve_size
6593 // Emit any relocs we saved in an attempt to avoid generating COPY
6595 if (this->copy_relocs_
.any_saved_relocs())
6596 this->copy_relocs_
.emit(this->rela_dyn_section(layout
));
6599 // Return TRUE iff INSN is one we expect on a _LO variety toc/got
6603 ok_lo_toc_insn(uint32_t insn
)
6605 return ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
6606 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
6607 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
6608 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
6609 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
6610 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
6611 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
6612 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
6613 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
6614 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
6615 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
6616 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
6617 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
6618 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
6619 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
6621 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
6622 && ((insn
& 3) == 0 || (insn
& 3) == 3))
6623 || (insn
& (0x3f << 26)) == 12u << 26 /* addic */);
6626 // Return the value to use for a branch relocation.
6628 template<int size
, bool big_endian
>
6629 typename Target_powerpc
<size
, big_endian
>::Address
6630 Target_powerpc
<size
, big_endian
>::symval_for_branch(
6631 const Symbol_table
* symtab
,
6633 const Sized_symbol
<size
>* gsym
,
6634 Powerpc_relobj
<size
, big_endian
>* object
,
6635 unsigned int *dest_shndx
)
6637 if (size
== 32 || this->abiversion() >= 2)
6641 // If the symbol is defined in an opd section, ie. is a function
6642 // descriptor, use the function descriptor code entry address
6643 Powerpc_relobj
<size
, big_endian
>* symobj
= object
;
6645 && gsym
->source() != Symbol::FROM_OBJECT
)
6648 symobj
= static_cast<Powerpc_relobj
<size
, big_endian
>*>(gsym
->object());
6649 unsigned int shndx
= symobj
->opd_shndx();
6652 Address opd_addr
= symobj
->get_output_section_offset(shndx
);
6653 if (opd_addr
== invalid_address
)
6655 opd_addr
+= symobj
->output_section_address(shndx
);
6656 if (value
>= opd_addr
&& value
< opd_addr
+ symobj
->section_size(shndx
))
6659 *dest_shndx
= symobj
->get_opd_ent(value
- opd_addr
, &sec_off
);
6660 if (symtab
->is_section_folded(symobj
, *dest_shndx
))
6663 = symtab
->icf()->get_folded_section(symobj
, *dest_shndx
);
6664 symobj
= static_cast<Powerpc_relobj
<size
, big_endian
>*>(folded
.first
);
6665 *dest_shndx
= folded
.second
;
6667 Address sec_addr
= symobj
->get_output_section_offset(*dest_shndx
);
6668 gold_assert(sec_addr
!= invalid_address
);
6669 sec_addr
+= symobj
->output_section(*dest_shndx
)->address();
6670 value
= sec_addr
+ sec_off
;
6675 // Perform a relocation.
6677 template<int size
, bool big_endian
>
6679 Target_powerpc
<size
, big_endian
>::Relocate::relocate(
6680 const Relocate_info
<size
, big_endian
>* relinfo
,
6681 Target_powerpc
* target
,
6684 const elfcpp::Rela
<size
, big_endian
>& rela
,
6685 unsigned int r_type
,
6686 const Sized_symbol
<size
>* gsym
,
6687 const Symbol_value
<size
>* psymval
,
6688 unsigned char* view
,
6690 section_size_type view_size
)
6695 switch (this->maybe_skip_tls_get_addr_call(r_type
, gsym
))
6697 case Track_tls::NOT_EXPECTED
:
6698 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
6699 _("__tls_get_addr call lacks marker reloc"));
6701 case Track_tls::EXPECTED
:
6702 // We have already complained.
6704 case Track_tls::SKIP
:
6706 case Track_tls::NORMAL
:
6710 typedef Powerpc_relocate_functions
<size
, big_endian
> Reloc
;
6711 typedef typename
elfcpp::Swap
<32, big_endian
>::Valtype Insn
;
6712 Powerpc_relobj
<size
, big_endian
>* const object
6713 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(relinfo
->object
);
6715 bool has_stub_value
= false;
6716 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
6718 ? gsym
->use_plt_offset(Scan::get_reference_flags(r_type
, target
))
6719 : object
->local_has_plt_offset(r_sym
))
6720 && (!psymval
->is_ifunc_symbol()
6721 || Scan::reloc_needs_plt_for_ifunc(target
, object
, r_type
, false)))
6725 && target
->abiversion() >= 2
6726 && !parameters
->options().output_is_position_independent()
6727 && !is_branch_reloc(r_type
))
6729 unsigned int off
= target
->glink_section()->find_global_entry(gsym
);
6730 gold_assert(off
!= (unsigned int)-1);
6731 value
= target
->glink_section()->global_entry_address() + off
;
6735 Stub_table
<size
, big_endian
>* stub_table
6736 = object
->stub_table(relinfo
->data_shndx
);
6737 if (stub_table
== NULL
)
6739 // This is a ref from a data section to an ifunc symbol.
6740 if (target
->stub_tables().size() != 0)
6741 stub_table
= target
->stub_tables()[0];
6743 gold_assert(stub_table
!= NULL
);
6746 off
= stub_table
->find_plt_call_entry(object
, gsym
, r_type
,
6747 rela
.get_r_addend());
6749 off
= stub_table
->find_plt_call_entry(object
, r_sym
, r_type
,
6750 rela
.get_r_addend());
6751 gold_assert(off
!= invalid_address
);
6752 value
= stub_table
->stub_address() + off
;
6754 has_stub_value
= true;
6757 if (r_type
== elfcpp::R_POWERPC_GOT16
6758 || r_type
== elfcpp::R_POWERPC_GOT16_LO
6759 || r_type
== elfcpp::R_POWERPC_GOT16_HI
6760 || r_type
== elfcpp::R_POWERPC_GOT16_HA
6761 || r_type
== elfcpp::R_PPC64_GOT16_DS
6762 || r_type
== elfcpp::R_PPC64_GOT16_LO_DS
)
6766 gold_assert(gsym
->has_got_offset(GOT_TYPE_STANDARD
));
6767 value
= gsym
->got_offset(GOT_TYPE_STANDARD
);
6771 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
6772 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_STANDARD
));
6773 value
= object
->local_got_offset(r_sym
, GOT_TYPE_STANDARD
);
6775 value
-= target
->got_section()->got_base_offset(object
);
6777 else if (r_type
== elfcpp::R_PPC64_TOC
)
6779 value
= (target
->got_section()->output_section()->address()
6780 + object
->toc_base_offset());
6782 else if (gsym
!= NULL
6783 && (r_type
== elfcpp::R_POWERPC_REL24
6784 || r_type
== elfcpp::R_PPC_PLTREL24
)
6789 typedef typename
elfcpp::Swap
<32, big_endian
>::Valtype Valtype
;
6790 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
6791 bool can_plt_call
= false;
6792 if (rela
.get_r_offset() + 8 <= view_size
)
6794 Valtype insn
= elfcpp::Swap
<32, big_endian
>::readval(wv
);
6795 Valtype insn2
= elfcpp::Swap
<32, big_endian
>::readval(wv
+ 1);
6798 || insn2
== cror_15_15_15
|| insn2
== cror_31_31_31
))
6800 elfcpp::Swap
<32, big_endian
>::
6801 writeval(wv
+ 1, ld_2_1
+ target
->stk_toc());
6802 can_plt_call
= true;
6807 // If we don't have a branch and link followed by a nop,
6808 // we can't go via the plt because there is no place to
6809 // put a toc restoring instruction.
6810 // Unless we know we won't be returning.
6811 if (strcmp(gsym
->name(), "__libc_start_main") == 0)
6812 can_plt_call
= true;
6816 // g++ as of 20130507 emits self-calls without a
6817 // following nop. This is arguably wrong since we have
6818 // conflicting information. On the one hand a global
6819 // symbol and on the other a local call sequence, but
6820 // don't error for this special case.
6821 // It isn't possible to cheaply verify we have exactly
6822 // such a call. Allow all calls to the same section.
6824 Address code
= value
;
6825 if (gsym
->source() == Symbol::FROM_OBJECT
6826 && gsym
->object() == object
)
6828 unsigned int dest_shndx
= 0;
6829 if (target
->abiversion() < 2)
6831 Address addend
= rela
.get_r_addend();
6832 Address opdent
= psymval
->value(object
, addend
);
6833 code
= target
->symval_for_branch(relinfo
->symtab
,
6834 opdent
, gsym
, object
,
6838 if (dest_shndx
== 0)
6839 dest_shndx
= gsym
->shndx(&is_ordinary
);
6840 ok
= dest_shndx
== relinfo
->data_shndx
;
6844 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
6845 _("call lacks nop, can't restore toc; "
6846 "recompile with -fPIC"));
6852 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
6853 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
6854 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HI
6855 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HA
)
6857 // First instruction of a global dynamic sequence, arg setup insn.
6858 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
6859 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
6860 enum Got_type got_type
= GOT_TYPE_STANDARD
;
6861 if (tls_type
== tls::TLSOPT_NONE
)
6862 got_type
= GOT_TYPE_TLSGD
;
6863 else if (tls_type
== tls::TLSOPT_TO_IE
)
6864 got_type
= GOT_TYPE_TPREL
;
6865 if (got_type
!= GOT_TYPE_STANDARD
)
6869 gold_assert(gsym
->has_got_offset(got_type
));
6870 value
= gsym
->got_offset(got_type
);
6874 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
6875 gold_assert(object
->local_has_got_offset(r_sym
, got_type
));
6876 value
= object
->local_got_offset(r_sym
, got_type
);
6878 value
-= target
->got_section()->got_base_offset(object
);
6880 if (tls_type
== tls::TLSOPT_TO_IE
)
6882 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
6883 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
6885 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6886 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
6887 insn
&= (1 << 26) - (1 << 16); // extract rt,ra from addi
6889 insn
|= 32 << 26; // lwz
6891 insn
|= 58 << 26; // ld
6892 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6894 r_type
+= (elfcpp::R_POWERPC_GOT_TPREL16
6895 - elfcpp::R_POWERPC_GOT_TLSGD16
);
6897 else if (tls_type
== tls::TLSOPT_TO_LE
)
6899 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
6900 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
6902 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6903 Insn insn
= addis_3_13
;
6906 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6907 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
6908 value
= psymval
->value(object
, rela
.get_r_addend());
6912 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6914 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6915 r_type
= elfcpp::R_POWERPC_NONE
;
6919 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
6920 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
6921 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HI
6922 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HA
)
6924 // First instruction of a local dynamic sequence, arg setup insn.
6925 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
6926 if (tls_type
== tls::TLSOPT_NONE
)
6928 value
= target
->tlsld_got_offset();
6929 value
-= target
->got_section()->got_base_offset(object
);
6933 gold_assert(tls_type
== tls::TLSOPT_TO_LE
);
6934 if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
6935 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
)
6937 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6938 Insn insn
= addis_3_13
;
6941 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6942 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
6947 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6949 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6950 r_type
= elfcpp::R_POWERPC_NONE
;
6954 else if (r_type
== elfcpp::R_POWERPC_GOT_DTPREL16
6955 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_LO
6956 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_HI
6957 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_HA
)
6959 // Accesses relative to a local dynamic sequence address,
6960 // no optimisation here.
6963 gold_assert(gsym
->has_got_offset(GOT_TYPE_DTPREL
));
6964 value
= gsym
->got_offset(GOT_TYPE_DTPREL
);
6968 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
6969 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_DTPREL
));
6970 value
= object
->local_got_offset(r_sym
, GOT_TYPE_DTPREL
);
6972 value
-= target
->got_section()->got_base_offset(object
);
6974 else if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
6975 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
6976 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HI
6977 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HA
)
6979 // First instruction of initial exec sequence.
6980 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
6981 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
6982 if (tls_type
== tls::TLSOPT_NONE
)
6986 gold_assert(gsym
->has_got_offset(GOT_TYPE_TPREL
));
6987 value
= gsym
->got_offset(GOT_TYPE_TPREL
);
6991 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
6992 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_TPREL
));
6993 value
= object
->local_got_offset(r_sym
, GOT_TYPE_TPREL
);
6995 value
-= target
->got_section()->got_base_offset(object
);
6999 gold_assert(tls_type
== tls::TLSOPT_TO_LE
);
7000 if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
7001 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
)
7003 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
7004 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7005 insn
&= (1 << 26) - (1 << 21); // extract rt from ld
7010 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7011 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
7012 value
= psymval
->value(object
, rela
.get_r_addend());
7016 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
7018 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7019 r_type
= elfcpp::R_POWERPC_NONE
;
7023 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
7024 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
7026 // Second instruction of a global dynamic sequence,
7027 // the __tls_get_addr call
7028 this->expect_tls_get_addr_call(relinfo
, relnum
, rela
.get_r_offset());
7029 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
7030 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
7031 if (tls_type
!= tls::TLSOPT_NONE
)
7033 if (tls_type
== tls::TLSOPT_TO_IE
)
7035 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
7036 Insn insn
= add_3_3_13
;
7039 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7040 r_type
= elfcpp::R_POWERPC_NONE
;
7044 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
7045 Insn insn
= addi_3_3
;
7046 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7047 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
7048 view
+= 2 * big_endian
;
7049 value
= psymval
->value(object
, rela
.get_r_addend());
7051 this->skip_next_tls_get_addr_call();
7054 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
7055 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
7057 // Second instruction of a local dynamic sequence,
7058 // the __tls_get_addr call
7059 this->expect_tls_get_addr_call(relinfo
, relnum
, rela
.get_r_offset());
7060 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
7061 if (tls_type
== tls::TLSOPT_TO_LE
)
7063 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
7064 Insn insn
= addi_3_3
;
7065 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7066 this->skip_next_tls_get_addr_call();
7067 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
7068 view
+= 2 * big_endian
;
7072 else if (r_type
== elfcpp::R_POWERPC_TLS
)
7074 // Second instruction of an initial exec sequence
7075 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
7076 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
7077 if (tls_type
== tls::TLSOPT_TO_LE
)
7079 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
7080 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7081 unsigned int reg
= size
== 32 ? 2 : 13;
7082 insn
= at_tls_transform(insn
, reg
);
7083 gold_assert(insn
!= 0);
7084 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7085 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
7086 view
+= 2 * big_endian
;
7087 value
= psymval
->value(object
, rela
.get_r_addend());
7090 else if (!has_stub_value
)
7093 unsigned int dest_shndx
;
7094 if (r_type
!= elfcpp::R_PPC_PLTREL24
)
7095 addend
= rela
.get_r_addend();
7096 value
= psymval
->value(object
, addend
);
7097 if (size
== 64 && is_branch_reloc(r_type
))
7099 if (target
->abiversion() >= 2)
7102 value
+= object
->ppc64_local_entry_offset(gsym
);
7104 value
+= object
->ppc64_local_entry_offset(r_sym
);
7107 value
= target
->symval_for_branch(relinfo
->symtab
, value
,
7108 gsym
, object
, &dest_shndx
);
7110 unsigned int max_branch_offset
= 0;
7111 if (r_type
== elfcpp::R_POWERPC_REL24
7112 || r_type
== elfcpp::R_PPC_PLTREL24
7113 || r_type
== elfcpp::R_PPC_LOCAL24PC
)
7114 max_branch_offset
= 1 << 25;
7115 else if (r_type
== elfcpp::R_POWERPC_REL14
7116 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
7117 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
)
7118 max_branch_offset
= 1 << 15;
7119 if (max_branch_offset
!= 0
7120 && value
- address
+ max_branch_offset
>= 2 * max_branch_offset
)
7122 Stub_table
<size
, big_endian
>* stub_table
7123 = object
->stub_table(relinfo
->data_shndx
);
7124 if (stub_table
!= NULL
)
7126 Address off
= stub_table
->find_long_branch_entry(object
, value
);
7127 if (off
!= invalid_address
)
7129 value
= (stub_table
->stub_address() + stub_table
->plt_size()
7131 has_stub_value
= true;
7139 case elfcpp::R_PPC64_REL64
:
7140 case elfcpp::R_POWERPC_REL32
:
7141 case elfcpp::R_POWERPC_REL24
:
7142 case elfcpp::R_PPC_PLTREL24
:
7143 case elfcpp::R_PPC_LOCAL24PC
:
7144 case elfcpp::R_POWERPC_REL16
:
7145 case elfcpp::R_POWERPC_REL16_LO
:
7146 case elfcpp::R_POWERPC_REL16_HI
:
7147 case elfcpp::R_POWERPC_REL16_HA
:
7148 case elfcpp::R_POWERPC_REL14
:
7149 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
7150 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
7154 case elfcpp::R_PPC64_TOC16
:
7155 case elfcpp::R_PPC64_TOC16_LO
:
7156 case elfcpp::R_PPC64_TOC16_HI
:
7157 case elfcpp::R_PPC64_TOC16_HA
:
7158 case elfcpp::R_PPC64_TOC16_DS
:
7159 case elfcpp::R_PPC64_TOC16_LO_DS
:
7160 // Subtract the TOC base address.
7161 value
-= (target
->got_section()->output_section()->address()
7162 + object
->toc_base_offset());
7165 case elfcpp::R_POWERPC_SECTOFF
:
7166 case elfcpp::R_POWERPC_SECTOFF_LO
:
7167 case elfcpp::R_POWERPC_SECTOFF_HI
:
7168 case elfcpp::R_POWERPC_SECTOFF_HA
:
7169 case elfcpp::R_PPC64_SECTOFF_DS
:
7170 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
7172 value
-= os
->address();
7175 case elfcpp::R_PPC64_TPREL16_DS
:
7176 case elfcpp::R_PPC64_TPREL16_LO_DS
:
7177 case elfcpp::R_PPC64_TPREL16_HIGH
:
7178 case elfcpp::R_PPC64_TPREL16_HIGHA
:
7180 // R_PPC_TLSGD, R_PPC_TLSLD, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HI
7182 case elfcpp::R_POWERPC_TPREL16
:
7183 case elfcpp::R_POWERPC_TPREL16_LO
:
7184 case elfcpp::R_POWERPC_TPREL16_HI
:
7185 case elfcpp::R_POWERPC_TPREL16_HA
:
7186 case elfcpp::R_POWERPC_TPREL
:
7187 case elfcpp::R_PPC64_TPREL16_HIGHER
:
7188 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
7189 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
7190 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
7191 // tls symbol values are relative to tls_segment()->vaddr()
7195 case elfcpp::R_PPC64_DTPREL16_DS
:
7196 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
7197 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
7198 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
7199 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
7200 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
7202 // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO
7203 // R_PPC_EMB_NADDR16_HI, R_PPC_EMB_NADDR16_HA, R_PPC_EMB_SDAI16
7205 case elfcpp::R_POWERPC_DTPREL16
:
7206 case elfcpp::R_POWERPC_DTPREL16_LO
:
7207 case elfcpp::R_POWERPC_DTPREL16_HI
:
7208 case elfcpp::R_POWERPC_DTPREL16_HA
:
7209 case elfcpp::R_POWERPC_DTPREL
:
7210 case elfcpp::R_PPC64_DTPREL16_HIGH
:
7211 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
7212 // tls symbol values are relative to tls_segment()->vaddr()
7213 value
-= dtp_offset
;
7216 case elfcpp::R_PPC64_ADDR64_LOCAL
:
7218 value
+= object
->ppc64_local_entry_offset(gsym
);
7220 value
+= object
->ppc64_local_entry_offset(r_sym
);
7227 Insn branch_bit
= 0;
7230 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
7231 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
7232 branch_bit
= 1 << 21;
7233 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
7234 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
7236 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
7237 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7240 if (this->is_isa_v2
)
7242 // Set 'a' bit. This is 0b00010 in BO field for branch
7243 // on CR(BI) insns (BO == 001at or 011at), and 0b01000
7244 // for branch on CTR insns (BO == 1a00t or 1a01t).
7245 if ((insn
& (0x14 << 21)) == (0x04 << 21))
7247 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
7254 // Invert 'y' bit if not the default.
7255 if (static_cast<Signed_address
>(value
) < 0)
7258 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7268 // Multi-instruction sequences that access the TOC can be
7269 // optimized, eg. addis ra,r2,0; addi rb,ra,x;
7270 // to nop; addi rb,r2,x;
7276 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
7277 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
7278 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
7279 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
7280 case elfcpp::R_POWERPC_GOT16_HA
:
7281 case elfcpp::R_PPC64_TOC16_HA
:
7282 if (parameters
->options().toc_optimize())
7284 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
7285 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7286 if ((insn
& ((0x3f << 26) | 0x1f << 16))
7287 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
7288 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
7289 _("toc optimization is not supported "
7290 "for %#08x instruction"), insn
);
7291 else if (value
+ 0x8000 < 0x10000)
7293 elfcpp::Swap
<32, big_endian
>::writeval(iview
, nop
);
7299 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
7300 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
7301 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
7302 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
7303 case elfcpp::R_POWERPC_GOT16_LO
:
7304 case elfcpp::R_PPC64_GOT16_LO_DS
:
7305 case elfcpp::R_PPC64_TOC16_LO
:
7306 case elfcpp::R_PPC64_TOC16_LO_DS
:
7307 if (parameters
->options().toc_optimize())
7309 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
7310 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7311 if (!ok_lo_toc_insn(insn
))
7312 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
7313 _("toc optimization is not supported "
7314 "for %#08x instruction"), insn
);
7315 else if (value
+ 0x8000 < 0x10000)
7317 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
7319 // Transform addic to addi when we change reg.
7320 insn
&= ~((0x3f << 26) | (0x1f << 16));
7321 insn
|= (14u << 26) | (2 << 16);
7325 insn
&= ~(0x1f << 16);
7328 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
7335 typename
Reloc::Overflow_check overflow
= Reloc::CHECK_NONE
;
7336 elfcpp::Shdr
<size
, big_endian
> shdr(relinfo
->data_shdr
);
7339 case elfcpp::R_POWERPC_ADDR32
:
7340 case elfcpp::R_POWERPC_UADDR32
:
7342 overflow
= Reloc::CHECK_BITFIELD
;
7345 case elfcpp::R_POWERPC_REL32
:
7347 overflow
= Reloc::CHECK_SIGNED
;
7350 case elfcpp::R_POWERPC_UADDR16
:
7351 overflow
= Reloc::CHECK_BITFIELD
;
7354 case elfcpp::R_POWERPC_ADDR16
:
7355 // We really should have three separate relocations,
7356 // one for 16-bit data, one for insns with 16-bit signed fields,
7357 // and one for insns with 16-bit unsigned fields.
7358 overflow
= Reloc::CHECK_BITFIELD
;
7359 if ((shdr
.get_sh_flags() & elfcpp::SHF_EXECINSTR
) != 0)
7360 overflow
= Reloc::CHECK_LOW_INSN
;
7363 case elfcpp::R_POWERPC_ADDR16_HI
:
7364 case elfcpp::R_POWERPC_ADDR16_HA
:
7365 case elfcpp::R_POWERPC_GOT16_HI
:
7366 case elfcpp::R_POWERPC_GOT16_HA
:
7367 case elfcpp::R_POWERPC_PLT16_HI
:
7368 case elfcpp::R_POWERPC_PLT16_HA
:
7369 case elfcpp::R_POWERPC_SECTOFF_HI
:
7370 case elfcpp::R_POWERPC_SECTOFF_HA
:
7371 case elfcpp::R_PPC64_TOC16_HI
:
7372 case elfcpp::R_PPC64_TOC16_HA
:
7373 case elfcpp::R_PPC64_PLTGOT16_HI
:
7374 case elfcpp::R_PPC64_PLTGOT16_HA
:
7375 case elfcpp::R_POWERPC_TPREL16_HI
:
7376 case elfcpp::R_POWERPC_TPREL16_HA
:
7377 case elfcpp::R_POWERPC_DTPREL16_HI
:
7378 case elfcpp::R_POWERPC_DTPREL16_HA
:
7379 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
7380 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
7381 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
7382 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
7383 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
7384 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
7385 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
7386 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
7387 case elfcpp::R_POWERPC_REL16_HI
:
7388 case elfcpp::R_POWERPC_REL16_HA
:
7390 overflow
= Reloc::CHECK_HIGH_INSN
;
7393 case elfcpp::R_POWERPC_REL16
:
7394 case elfcpp::R_PPC64_TOC16
:
7395 case elfcpp::R_POWERPC_GOT16
:
7396 case elfcpp::R_POWERPC_SECTOFF
:
7397 case elfcpp::R_POWERPC_TPREL16
:
7398 case elfcpp::R_POWERPC_DTPREL16
:
7399 case elfcpp::R_POWERPC_GOT_TLSGD16
:
7400 case elfcpp::R_POWERPC_GOT_TLSLD16
:
7401 case elfcpp::R_POWERPC_GOT_TPREL16
:
7402 case elfcpp::R_POWERPC_GOT_DTPREL16
:
7403 overflow
= Reloc::CHECK_LOW_INSN
;
7406 case elfcpp::R_POWERPC_ADDR24
:
7407 case elfcpp::R_POWERPC_ADDR14
:
7408 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
7409 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
7410 case elfcpp::R_PPC64_ADDR16_DS
:
7411 case elfcpp::R_POWERPC_REL24
:
7412 case elfcpp::R_PPC_PLTREL24
:
7413 case elfcpp::R_PPC_LOCAL24PC
:
7414 case elfcpp::R_PPC64_TPREL16_DS
:
7415 case elfcpp::R_PPC64_DTPREL16_DS
:
7416 case elfcpp::R_PPC64_TOC16_DS
:
7417 case elfcpp::R_PPC64_GOT16_DS
:
7418 case elfcpp::R_PPC64_SECTOFF_DS
:
7419 case elfcpp::R_POWERPC_REL14
:
7420 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
7421 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
7422 overflow
= Reloc::CHECK_SIGNED
;
7426 if (overflow
== Reloc::CHECK_LOW_INSN
7427 || overflow
== Reloc::CHECK_HIGH_INSN
)
7429 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
7430 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
7432 overflow
= Reloc::CHECK_SIGNED
;
7433 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
7434 overflow
= Reloc::CHECK_BITFIELD
;
7435 else if (overflow
== Reloc::CHECK_LOW_INSN
7436 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
7437 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
7438 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
7439 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
7440 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
7441 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
7442 overflow
= Reloc::CHECK_UNSIGNED
;
7445 typename Powerpc_relocate_functions
<size
, big_endian
>::Status status
7446 = Powerpc_relocate_functions
<size
, big_endian
>::STATUS_OK
;
7449 case elfcpp::R_POWERPC_NONE
:
7450 case elfcpp::R_POWERPC_TLS
:
7451 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
7452 case elfcpp::R_POWERPC_GNU_VTENTRY
:
7455 case elfcpp::R_PPC64_ADDR64
:
7456 case elfcpp::R_PPC64_REL64
:
7457 case elfcpp::R_PPC64_TOC
:
7458 case elfcpp::R_PPC64_ADDR64_LOCAL
:
7459 Reloc::addr64(view
, value
);
7462 case elfcpp::R_POWERPC_TPREL
:
7463 case elfcpp::R_POWERPC_DTPREL
:
7465 Reloc::addr64(view
, value
);
7467 status
= Reloc::addr32(view
, value
, overflow
);
7470 case elfcpp::R_PPC64_UADDR64
:
7471 Reloc::addr64_u(view
, value
);
7474 case elfcpp::R_POWERPC_ADDR32
:
7475 status
= Reloc::addr32(view
, value
, overflow
);
7478 case elfcpp::R_POWERPC_REL32
:
7479 case elfcpp::R_POWERPC_UADDR32
:
7480 status
= Reloc::addr32_u(view
, value
, overflow
);
7483 case elfcpp::R_POWERPC_ADDR24
:
7484 case elfcpp::R_POWERPC_REL24
:
7485 case elfcpp::R_PPC_PLTREL24
:
7486 case elfcpp::R_PPC_LOCAL24PC
:
7487 status
= Reloc::addr24(view
, value
, overflow
);
7490 case elfcpp::R_POWERPC_GOT_DTPREL16
:
7491 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
7494 status
= Reloc::addr16_ds(view
, value
, overflow
);
7497 case elfcpp::R_POWERPC_ADDR16
:
7498 case elfcpp::R_POWERPC_REL16
:
7499 case elfcpp::R_PPC64_TOC16
:
7500 case elfcpp::R_POWERPC_GOT16
:
7501 case elfcpp::R_POWERPC_SECTOFF
:
7502 case elfcpp::R_POWERPC_TPREL16
:
7503 case elfcpp::R_POWERPC_DTPREL16
:
7504 case elfcpp::R_POWERPC_GOT_TLSGD16
:
7505 case elfcpp::R_POWERPC_GOT_TLSLD16
:
7506 case elfcpp::R_POWERPC_GOT_TPREL16
:
7507 case elfcpp::R_POWERPC_ADDR16_LO
:
7508 case elfcpp::R_POWERPC_REL16_LO
:
7509 case elfcpp::R_PPC64_TOC16_LO
:
7510 case elfcpp::R_POWERPC_GOT16_LO
:
7511 case elfcpp::R_POWERPC_SECTOFF_LO
:
7512 case elfcpp::R_POWERPC_TPREL16_LO
:
7513 case elfcpp::R_POWERPC_DTPREL16_LO
:
7514 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
7515 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
7516 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
7517 status
= Reloc::addr16(view
, value
, overflow
);
7520 case elfcpp::R_POWERPC_UADDR16
:
7521 status
= Reloc::addr16_u(view
, value
, overflow
);
7524 case elfcpp::R_PPC64_ADDR16_HIGH
:
7525 case elfcpp::R_PPC64_TPREL16_HIGH
:
7526 case elfcpp::R_PPC64_DTPREL16_HIGH
:
7528 // R_PPC_EMB_MRKREF, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HA
7530 case elfcpp::R_POWERPC_ADDR16_HI
:
7531 case elfcpp::R_POWERPC_REL16_HI
:
7532 case elfcpp::R_PPC64_TOC16_HI
:
7533 case elfcpp::R_POWERPC_GOT16_HI
:
7534 case elfcpp::R_POWERPC_SECTOFF_HI
:
7535 case elfcpp::R_POWERPC_TPREL16_HI
:
7536 case elfcpp::R_POWERPC_DTPREL16_HI
:
7537 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
7538 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
7539 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
7540 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
7541 Reloc::addr16_hi(view
, value
);
7544 case elfcpp::R_PPC64_ADDR16_HIGHA
:
7545 case elfcpp::R_PPC64_TPREL16_HIGHA
:
7546 case elfcpp::R_PPC64_DTPREL16_HIGHA
:
7548 // R_PPC_EMB_RELSEC16, R_PPC_EMB_RELST_HI, R_PPC_EMB_BIT_FLD
7550 case elfcpp::R_POWERPC_ADDR16_HA
:
7551 case elfcpp::R_POWERPC_REL16_HA
:
7552 case elfcpp::R_PPC64_TOC16_HA
:
7553 case elfcpp::R_POWERPC_GOT16_HA
:
7554 case elfcpp::R_POWERPC_SECTOFF_HA
:
7555 case elfcpp::R_POWERPC_TPREL16_HA
:
7556 case elfcpp::R_POWERPC_DTPREL16_HA
:
7557 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
7558 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
7559 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
7560 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
7561 Reloc::addr16_ha(view
, value
);
7564 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
7566 // R_PPC_EMB_NADDR16_LO
7568 case elfcpp::R_PPC64_ADDR16_HIGHER
:
7569 case elfcpp::R_PPC64_TPREL16_HIGHER
:
7570 Reloc::addr16_hi2(view
, value
);
7573 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
7575 // R_PPC_EMB_NADDR16_HI
7577 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
7578 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
7579 Reloc::addr16_ha2(view
, value
);
7582 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
7584 // R_PPC_EMB_NADDR16_HA
7586 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
7587 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
7588 Reloc::addr16_hi3(view
, value
);
7591 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
7595 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
7596 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
7597 Reloc::addr16_ha3(view
, value
);
7600 case elfcpp::R_PPC64_DTPREL16_DS
:
7601 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
7603 // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16
7605 case elfcpp::R_PPC64_TPREL16_DS
:
7606 case elfcpp::R_PPC64_TPREL16_LO_DS
:
7608 // R_PPC_TLSGD, R_PPC_TLSLD
7610 case elfcpp::R_PPC64_ADDR16_DS
:
7611 case elfcpp::R_PPC64_ADDR16_LO_DS
:
7612 case elfcpp::R_PPC64_TOC16_DS
:
7613 case elfcpp::R_PPC64_TOC16_LO_DS
:
7614 case elfcpp::R_PPC64_GOT16_DS
:
7615 case elfcpp::R_PPC64_GOT16_LO_DS
:
7616 case elfcpp::R_PPC64_SECTOFF_DS
:
7617 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
7618 status
= Reloc::addr16_ds(view
, value
, overflow
);
7621 case elfcpp::R_POWERPC_ADDR14
:
7622 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
7623 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
7624 case elfcpp::R_POWERPC_REL14
:
7625 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
7626 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
7627 status
= Reloc::addr14(view
, value
, overflow
);
7630 case elfcpp::R_POWERPC_COPY
:
7631 case elfcpp::R_POWERPC_GLOB_DAT
:
7632 case elfcpp::R_POWERPC_JMP_SLOT
:
7633 case elfcpp::R_POWERPC_RELATIVE
:
7634 case elfcpp::R_POWERPC_DTPMOD
:
7635 case elfcpp::R_PPC64_JMP_IREL
:
7636 case elfcpp::R_POWERPC_IRELATIVE
:
7637 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
7638 _("unexpected reloc %u in object file"),
7642 case elfcpp::R_PPC_EMB_SDA21
:
7647 // R_PPC64_TOCSAVE. For the time being this can be ignored.
7651 case elfcpp::R_PPC_EMB_SDA2I16
:
7652 case elfcpp::R_PPC_EMB_SDA2REL
:
7655 // R_PPC64_TLSGD, R_PPC64_TLSLD
7658 case elfcpp::R_POWERPC_PLT32
:
7659 case elfcpp::R_POWERPC_PLTREL32
:
7660 case elfcpp::R_POWERPC_PLT16_LO
:
7661 case elfcpp::R_POWERPC_PLT16_HI
:
7662 case elfcpp::R_POWERPC_PLT16_HA
:
7663 case elfcpp::R_PPC_SDAREL16
:
7664 case elfcpp::R_POWERPC_ADDR30
:
7665 case elfcpp::R_PPC64_PLT64
:
7666 case elfcpp::R_PPC64_PLTREL64
:
7667 case elfcpp::R_PPC64_PLTGOT16
:
7668 case elfcpp::R_PPC64_PLTGOT16_LO
:
7669 case elfcpp::R_PPC64_PLTGOT16_HI
:
7670 case elfcpp::R_PPC64_PLTGOT16_HA
:
7671 case elfcpp::R_PPC64_PLT16_LO_DS
:
7672 case elfcpp::R_PPC64_PLTGOT16_DS
:
7673 case elfcpp::R_PPC64_PLTGOT16_LO_DS
:
7674 case elfcpp::R_PPC_EMB_RELSDA
:
7675 case elfcpp::R_PPC_TOC16
:
7678 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
7679 _("unsupported reloc %u"),
7683 if (status
!= Powerpc_relocate_functions
<size
, big_endian
>::STATUS_OK
7686 && gsym
->is_weak_undefined()
7687 && is_branch_reloc(r_type
))))
7689 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
7690 _("relocation overflow"));
7692 gold_info(_("try relinking with a smaller --stub-group-size"));
7698 // Relocate section data.
7700 template<int size
, bool big_endian
>
7702 Target_powerpc
<size
, big_endian
>::relocate_section(
7703 const Relocate_info
<size
, big_endian
>* relinfo
,
7704 unsigned int sh_type
,
7705 const unsigned char* prelocs
,
7707 Output_section
* output_section
,
7708 bool needs_special_offset_handling
,
7709 unsigned char* view
,
7711 section_size_type view_size
,
7712 const Reloc_symbol_changes
* reloc_symbol_changes
)
7714 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
7715 typedef typename Target_powerpc
<size
, big_endian
>::Relocate Powerpc_relocate
;
7716 typedef typename Target_powerpc
<size
, big_endian
>::Relocate_comdat_behavior
7717 Powerpc_comdat_behavior
;
7719 gold_assert(sh_type
== elfcpp::SHT_RELA
);
7721 gold::relocate_section
<size
, big_endian
, Powerpc
, elfcpp::SHT_RELA
,
7722 Powerpc_relocate
, Powerpc_comdat_behavior
>(
7728 needs_special_offset_handling
,
7732 reloc_symbol_changes
);
7735 class Powerpc_scan_relocatable_reloc
7738 // Return the strategy to use for a local symbol which is not a
7739 // section symbol, given the relocation type.
7740 inline Relocatable_relocs::Reloc_strategy
7741 local_non_section_strategy(unsigned int r_type
, Relobj
*, unsigned int r_sym
)
7743 if (r_type
== 0 && r_sym
== 0)
7744 return Relocatable_relocs::RELOC_DISCARD
;
7745 return Relocatable_relocs::RELOC_COPY
;
7748 // Return the strategy to use for a local symbol which is a section
7749 // symbol, given the relocation type.
7750 inline Relocatable_relocs::Reloc_strategy
7751 local_section_strategy(unsigned int, Relobj
*)
7753 return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
;
7756 // Return the strategy to use for a global symbol, given the
7757 // relocation type, the object, and the symbol index.
7758 inline Relocatable_relocs::Reloc_strategy
7759 global_strategy(unsigned int r_type
, Relobj
*, unsigned int)
7761 if (r_type
== elfcpp::R_PPC_PLTREL24
)
7762 return Relocatable_relocs::RELOC_SPECIAL
;
7763 return Relocatable_relocs::RELOC_COPY
;
7767 // Scan the relocs during a relocatable link.
7769 template<int size
, bool big_endian
>
7771 Target_powerpc
<size
, big_endian
>::scan_relocatable_relocs(
7772 Symbol_table
* symtab
,
7774 Sized_relobj_file
<size
, big_endian
>* object
,
7775 unsigned int data_shndx
,
7776 unsigned int sh_type
,
7777 const unsigned char* prelocs
,
7779 Output_section
* output_section
,
7780 bool needs_special_offset_handling
,
7781 size_t local_symbol_count
,
7782 const unsigned char* plocal_symbols
,
7783 Relocatable_relocs
* rr
)
7785 gold_assert(sh_type
== elfcpp::SHT_RELA
);
7787 gold::scan_relocatable_relocs
<size
, big_endian
, elfcpp::SHT_RELA
,
7788 Powerpc_scan_relocatable_reloc
>(
7796 needs_special_offset_handling
,
7802 // Emit relocations for a section.
7803 // This is a modified version of the function by the same name in
7804 // target-reloc.h. Using relocate_special_relocatable for
7805 // R_PPC_PLTREL24 would require duplication of the entire body of the
7806 // loop, so we may as well duplicate the whole thing.
7808 template<int size
, bool big_endian
>
7810 Target_powerpc
<size
, big_endian
>::relocate_relocs(
7811 const Relocate_info
<size
, big_endian
>* relinfo
,
7812 unsigned int sh_type
,
7813 const unsigned char* prelocs
,
7815 Output_section
* output_section
,
7816 typename
elfcpp::Elf_types
<size
>::Elf_Off offset_in_output_section
,
7817 const Relocatable_relocs
* rr
,
7819 Address view_address
,
7821 unsigned char* reloc_view
,
7822 section_size_type reloc_view_size
)
7824 gold_assert(sh_type
== elfcpp::SHT_RELA
);
7826 typedef typename Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::Reloc
7828 typedef typename Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::Reloc_write
7830 const int reloc_size
7831 = Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
7833 Powerpc_relobj
<size
, big_endian
>* const object
7834 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(relinfo
->object
);
7835 const unsigned int local_count
= object
->local_symbol_count();
7836 unsigned int got2_shndx
= object
->got2_shndx();
7837 Address got2_addend
= 0;
7838 if (got2_shndx
!= 0)
7840 got2_addend
= object
->get_output_section_offset(got2_shndx
);
7841 gold_assert(got2_addend
!= invalid_address
);
7844 unsigned char* pwrite
= reloc_view
;
7845 bool zap_next
= false;
7846 for (size_t i
= 0; i
< reloc_count
; ++i
, prelocs
+= reloc_size
)
7848 Relocatable_relocs::Reloc_strategy strategy
= rr
->strategy(i
);
7849 if (strategy
== Relocatable_relocs::RELOC_DISCARD
)
7852 Reltype
reloc(prelocs
);
7853 Reltype_write
reloc_write(pwrite
);
7855 Address offset
= reloc
.get_r_offset();
7856 typename
elfcpp::Elf_types
<size
>::Elf_WXword r_info
= reloc
.get_r_info();
7857 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(r_info
);
7858 unsigned int r_type
= elfcpp::elf_r_type
<size
>(r_info
);
7859 const unsigned int orig_r_sym
= r_sym
;
7860 typename
elfcpp::Elf_types
<size
>::Elf_Swxword addend
7861 = reloc
.get_r_addend();
7862 const Symbol
* gsym
= NULL
;
7866 // We could arrange to discard these and other relocs for
7867 // tls optimised sequences in the strategy methods, but for
7868 // now do as BFD ld does.
7869 r_type
= elfcpp::R_POWERPC_NONE
;
7873 // Get the new symbol index.
7874 if (r_sym
< local_count
)
7878 case Relocatable_relocs::RELOC_COPY
:
7879 case Relocatable_relocs::RELOC_SPECIAL
:
7882 r_sym
= object
->symtab_index(r_sym
);
7883 gold_assert(r_sym
!= -1U);
7887 case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
:
7889 // We are adjusting a section symbol. We need to find
7890 // the symbol table index of the section symbol for
7891 // the output section corresponding to input section
7892 // in which this symbol is defined.
7893 gold_assert(r_sym
< local_count
);
7895 unsigned int shndx
=
7896 object
->local_symbol_input_shndx(r_sym
, &is_ordinary
);
7897 gold_assert(is_ordinary
);
7898 Output_section
* os
= object
->output_section(shndx
);
7899 gold_assert(os
!= NULL
);
7900 gold_assert(os
->needs_symtab_index());
7901 r_sym
= os
->symtab_index();
7911 gsym
= object
->global_symbol(r_sym
);
7912 gold_assert(gsym
!= NULL
);
7913 if (gsym
->is_forwarder())
7914 gsym
= relinfo
->symtab
->resolve_forwards(gsym
);
7916 gold_assert(gsym
->has_symtab_index());
7917 r_sym
= gsym
->symtab_index();
7920 // Get the new offset--the location in the output section where
7921 // this relocation should be applied.
7922 if (static_cast<Address
>(offset_in_output_section
) != invalid_address
)
7923 offset
+= offset_in_output_section
;
7926 section_offset_type sot_offset
=
7927 convert_types
<section_offset_type
, Address
>(offset
);
7928 section_offset_type new_sot_offset
=
7929 output_section
->output_offset(object
, relinfo
->data_shndx
,
7931 gold_assert(new_sot_offset
!= -1);
7932 offset
= new_sot_offset
;
7935 // In an object file, r_offset is an offset within the section.
7936 // In an executable or dynamic object, generated by
7937 // --emit-relocs, r_offset is an absolute address.
7938 if (!parameters
->options().relocatable())
7940 offset
+= view_address
;
7941 if (static_cast<Address
>(offset_in_output_section
) != invalid_address
)
7942 offset
-= offset_in_output_section
;
7945 // Handle the reloc addend based on the strategy.
7946 if (strategy
== Relocatable_relocs::RELOC_COPY
)
7948 else if (strategy
== Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
)
7950 const Symbol_value
<size
>* psymval
= object
->local_symbol(orig_r_sym
);
7951 addend
= psymval
->value(object
, addend
);
7953 else if (strategy
== Relocatable_relocs::RELOC_SPECIAL
)
7955 if (addend
>= 32768)
7956 addend
+= got2_addend
;
7961 if (!parameters
->options().relocatable())
7963 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
7964 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
7965 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HI
7966 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HA
)
7968 // First instruction of a global dynamic sequence,
7970 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
7971 switch (this->optimize_tls_gd(final
))
7973 case tls::TLSOPT_TO_IE
:
7974 r_type
+= (elfcpp::R_POWERPC_GOT_TPREL16
7975 - elfcpp::R_POWERPC_GOT_TLSGD16
);
7977 case tls::TLSOPT_TO_LE
:
7978 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
7979 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
7980 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
7983 r_type
= elfcpp::R_POWERPC_NONE
;
7984 offset
-= 2 * big_endian
;
7991 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
7992 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
7993 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HI
7994 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HA
)
7996 // First instruction of a local dynamic sequence,
7998 if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE
)
8000 if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
8001 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
)
8003 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
8004 const Output_section
* os
= relinfo
->layout
->tls_segment()
8006 gold_assert(os
!= NULL
);
8007 gold_assert(os
->needs_symtab_index());
8008 r_sym
= os
->symtab_index();
8009 addend
= dtp_offset
;
8013 r_type
= elfcpp::R_POWERPC_NONE
;
8014 offset
-= 2 * big_endian
;
8018 else if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
8019 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
8020 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HI
8021 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HA
)
8023 // First instruction of initial exec sequence.
8024 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
8025 if (this->optimize_tls_ie(final
) == tls::TLSOPT_TO_LE
)
8027 if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
8028 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
)
8029 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
8032 r_type
= elfcpp::R_POWERPC_NONE
;
8033 offset
-= 2 * big_endian
;
8037 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
8038 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
8040 // Second instruction of a global dynamic sequence,
8041 // the __tls_get_addr call
8042 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
8043 switch (this->optimize_tls_gd(final
))
8045 case tls::TLSOPT_TO_IE
:
8046 r_type
= elfcpp::R_POWERPC_NONE
;
8049 case tls::TLSOPT_TO_LE
:
8050 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
8051 offset
+= 2 * big_endian
;
8058 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
8059 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
8061 // Second instruction of a local dynamic sequence,
8062 // the __tls_get_addr call
8063 if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE
)
8065 const Output_section
* os
= relinfo
->layout
->tls_segment()
8067 gold_assert(os
!= NULL
);
8068 gold_assert(os
->needs_symtab_index());
8069 r_sym
= os
->symtab_index();
8070 addend
= dtp_offset
;
8071 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
8072 offset
+= 2 * big_endian
;
8076 else if (r_type
== elfcpp::R_POWERPC_TLS
)
8078 // Second instruction of an initial exec sequence
8079 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
8080 if (this->optimize_tls_ie(final
) == tls::TLSOPT_TO_LE
)
8082 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
8083 offset
+= 2 * big_endian
;
8088 reloc_write
.put_r_offset(offset
);
8089 reloc_write
.put_r_info(elfcpp::elf_r_info
<size
>(r_sym
, r_type
));
8090 reloc_write
.put_r_addend(addend
);
8092 pwrite
+= reloc_size
;
8095 gold_assert(static_cast<section_size_type
>(pwrite
- reloc_view
)
8096 == reloc_view_size
);
8099 // Return the value to use for a dynamic symbol which requires special
8100 // treatment. This is how we support equality comparisons of function
8101 // pointers across shared library boundaries, as described in the
8102 // processor specific ABI supplement.
8104 template<int size
, bool big_endian
>
8106 Target_powerpc
<size
, big_endian
>::do_dynsym_value(const Symbol
* gsym
) const
8110 gold_assert(gsym
->is_from_dynobj() && gsym
->has_plt_offset());
8111 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
8112 p
!= this->stub_tables_
.end();
8115 Address off
= (*p
)->find_plt_call_entry(gsym
);
8116 if (off
!= invalid_address
)
8117 return (*p
)->stub_address() + off
;
8120 else if (this->abiversion() >= 2)
8122 unsigned int off
= this->glink_section()->find_global_entry(gsym
);
8123 if (off
!= (unsigned int)-1)
8124 return this->glink_section()->global_entry_address() + off
;
8129 // Return the PLT address to use for a local symbol.
8130 template<int size
, bool big_endian
>
8132 Target_powerpc
<size
, big_endian
>::do_plt_address_for_local(
8133 const Relobj
* object
,
8134 unsigned int symndx
) const
8138 const Sized_relobj
<size
, big_endian
>* relobj
8139 = static_cast<const Sized_relobj
<size
, big_endian
>*>(object
);
8140 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
8141 p
!= this->stub_tables_
.end();
8144 Address off
= (*p
)->find_plt_call_entry(relobj
->sized_relobj(),
8146 if (off
!= invalid_address
)
8147 return (*p
)->stub_address() + off
;
8153 // Return the PLT address to use for a global symbol.
8154 template<int size
, bool big_endian
>
8156 Target_powerpc
<size
, big_endian
>::do_plt_address_for_global(
8157 const Symbol
* gsym
) const
8161 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
8162 p
!= this->stub_tables_
.end();
8165 Address off
= (*p
)->find_plt_call_entry(gsym
);
8166 if (off
!= invalid_address
)
8167 return (*p
)->stub_address() + off
;
8170 else if (this->abiversion() >= 2)
8172 unsigned int off
= this->glink_section()->find_global_entry(gsym
);
8173 if (off
!= (unsigned int)-1)
8174 return this->glink_section()->global_entry_address() + off
;
8179 // Return the offset to use for the GOT_INDX'th got entry which is
8180 // for a local tls symbol specified by OBJECT, SYMNDX.
8181 template<int size
, bool big_endian
>
8183 Target_powerpc
<size
, big_endian
>::do_tls_offset_for_local(
8184 const Relobj
* object
,
8185 unsigned int symndx
,
8186 unsigned int got_indx
) const
8188 const Powerpc_relobj
<size
, big_endian
>* ppc_object
8189 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>(object
);
8190 if (ppc_object
->local_symbol(symndx
)->is_tls_symbol())
8192 for (Got_type got_type
= GOT_TYPE_TLSGD
;
8193 got_type
<= GOT_TYPE_TPREL
;
8194 got_type
= Got_type(got_type
+ 1))
8195 if (ppc_object
->local_has_got_offset(symndx
, got_type
))
8197 unsigned int off
= ppc_object
->local_got_offset(symndx
, got_type
);
8198 if (got_type
== GOT_TYPE_TLSGD
)
8200 if (off
== got_indx
* (size
/ 8))
8202 if (got_type
== GOT_TYPE_TPREL
)
8212 // Return the offset to use for the GOT_INDX'th got entry which is
8213 // for global tls symbol GSYM.
8214 template<int size
, bool big_endian
>
8216 Target_powerpc
<size
, big_endian
>::do_tls_offset_for_global(
8218 unsigned int got_indx
) const
8220 if (gsym
->type() == elfcpp::STT_TLS
)
8222 for (Got_type got_type
= GOT_TYPE_TLSGD
;
8223 got_type
<= GOT_TYPE_TPREL
;
8224 got_type
= Got_type(got_type
+ 1))
8225 if (gsym
->has_got_offset(got_type
))
8227 unsigned int off
= gsym
->got_offset(got_type
);
8228 if (got_type
== GOT_TYPE_TLSGD
)
8230 if (off
== got_indx
* (size
/ 8))
8232 if (got_type
== GOT_TYPE_TPREL
)
8242 // The selector for powerpc object files.
8244 template<int size
, bool big_endian
>
8245 class Target_selector_powerpc
: public Target_selector
8248 Target_selector_powerpc()
8249 : Target_selector(size
== 64 ? elfcpp::EM_PPC64
: elfcpp::EM_PPC
,
8252 ? (big_endian
? "elf64-powerpc" : "elf64-powerpcle")
8253 : (big_endian
? "elf32-powerpc" : "elf32-powerpcle")),
8255 ? (big_endian
? "elf64ppc" : "elf64lppc")
8256 : (big_endian
? "elf32ppc" : "elf32lppc")))
8260 do_instantiate_target()
8261 { return new Target_powerpc
<size
, big_endian
>(); }
8264 Target_selector_powerpc
<32, true> target_selector_ppc32
;
8265 Target_selector_powerpc
<32, false> target_selector_ppc32le
;
8266 Target_selector_powerpc
<64, true> target_selector_ppc64
;
8267 Target_selector_powerpc
<64, false> target_selector_ppc64le
;
8269 // Instantiate these constants for -O0
8270 template<int size
, bool big_endian
>
8271 const int Output_data_glink
<size
, big_endian
>::pltresolve_size
;
8272 template<int size
, bool big_endian
>
8273 const typename Output_data_glink
<size
, big_endian
>::Address
8274 Output_data_glink
<size
, big_endian
>::invalid_address
;
8275 template<int size
, bool big_endian
>
8276 const typename Stub_table
<size
, big_endian
>::Address
8277 Stub_table
<size
, big_endian
>::invalid_address
;
8278 template<int size
, bool big_endian
>
8279 const typename Target_powerpc
<size
, big_endian
>::Address
8280 Target_powerpc
<size
, big_endian
>::invalid_address
;
8282 } // End anonymous namespace.