1 // powerpc.cc -- powerpc target support for gold.
3 // Copyright 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
4 // Written by David S. Miller <davem@davemloft.net>
5 // and David Edelsohn <edelsohn@gnu.org>
7 // This file is part of gold.
9 // This program is free software; you can redistribute it and/or modify
10 // it under the terms of the GNU General Public License as published by
11 // the Free Software Foundation; either version 3 of the License, or
12 // (at your option) any later version.
14 // This program is distributed in the hope that it will be useful,
15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 // GNU General Public License for more details.
19 // You should have received a copy of the GNU General Public License
20 // along with this program; if not, write to the Free Software
21 // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 // MA 02110-1301, USA.
30 #include "parameters.h"
37 #include "copy-relocs.h"
39 #include "target-reloc.h"
40 #include "target-select.h"
50 template<int size
, bool big_endian
>
51 class Output_data_plt_powerpc
;
53 template<int size
, bool big_endian
>
54 class Output_data_brlt_powerpc
;
56 template<int size
, bool big_endian
>
57 class Output_data_got_powerpc
;
59 template<int size
, bool big_endian
>
60 class Output_data_glink
;
62 template<int size
, bool big_endian
>
65 template<int size
, bool big_endian
>
66 class Powerpc_relobj
: public Sized_relobj_file
<size
, big_endian
>
69 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
70 typedef Unordered_set
<Section_id
, Section_id_hash
> Section_refs
;
71 typedef Unordered_map
<Address
, Section_refs
> Access_from
;
73 Powerpc_relobj(const std::string
& name
, Input_file
* input_file
, off_t offset
,
74 const typename
elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
75 : Sized_relobj_file
<size
, big_endian
>(name
, input_file
, offset
, ehdr
),
76 special_(0), has_small_toc_reloc_(false), opd_valid_(false),
77 opd_ent_(), access_from_map_(), has14_(), stub_table_()
83 // The .got2 section shndx.
88 return this->special_
;
93 // The .opd section shndx.
100 return this->special_
;
103 // Init OPD entry arrays.
105 init_opd(size_t opd_size
)
107 size_t count
= this->opd_ent_ndx(opd_size
);
108 this->opd_ent_
.resize(count
);
111 // Return section and offset of function entry for .opd + R_OFF.
113 get_opd_ent(Address r_off
, Address
* value
= NULL
) const
115 size_t ndx
= this->opd_ent_ndx(r_off
);
116 gold_assert(ndx
< this->opd_ent_
.size());
117 gold_assert(this->opd_ent_
[ndx
].shndx
!= 0);
119 *value
= this->opd_ent_
[ndx
].off
;
120 return this->opd_ent_
[ndx
].shndx
;
123 // Set section and offset of function entry for .opd + R_OFF.
125 set_opd_ent(Address r_off
, unsigned int shndx
, Address value
)
127 size_t ndx
= this->opd_ent_ndx(r_off
);
128 gold_assert(ndx
< this->opd_ent_
.size());
129 this->opd_ent_
[ndx
].shndx
= shndx
;
130 this->opd_ent_
[ndx
].off
= value
;
133 // Return discard flag for .opd + R_OFF.
135 get_opd_discard(Address r_off
) const
137 size_t ndx
= this->opd_ent_ndx(r_off
);
138 gold_assert(ndx
< this->opd_ent_
.size());
139 return this->opd_ent_
[ndx
].discard
;
142 // Set discard flag for .opd + R_OFF.
144 set_opd_discard(Address r_off
)
146 size_t ndx
= this->opd_ent_ndx(r_off
);
147 gold_assert(ndx
< this->opd_ent_
.size());
148 this->opd_ent_
[ndx
].discard
= true;
153 { return this->opd_valid_
; }
157 { this->opd_valid_
= true; }
159 // Examine .rela.opd to build info about function entry points.
161 scan_opd_relocs(size_t reloc_count
,
162 const unsigned char* prelocs
,
163 const unsigned char* plocal_syms
);
165 // Perform the Sized_relobj_file method, then set up opd info from
168 do_read_relocs(Read_relocs_data
*);
171 do_find_special_sections(Read_symbols_data
* sd
);
173 // Adjust this local symbol value. Return false if the symbol
174 // should be discarded from the output file.
176 do_adjust_local_symbol(Symbol_value
<size
>* lv
) const
178 if (size
== 64 && this->opd_shndx() != 0)
181 if (lv
->input_shndx(&is_ordinary
) != this->opd_shndx())
183 if (this->get_opd_discard(lv
->input_value()))
191 { return &this->access_from_map_
; }
193 // Add a reference from SRC_OBJ, SRC_INDX to this object's .opd
194 // section at DST_OFF.
196 add_reference(Object
* src_obj
,
197 unsigned int src_indx
,
198 typename
elfcpp::Elf_types
<size
>::Elf_Addr dst_off
)
200 Section_id
src_id(src_obj
, src_indx
);
201 this->access_from_map_
[dst_off
].insert(src_id
);
204 // Add a reference to the code section specified by the .opd entry
207 add_gc_mark(typename
elfcpp::Elf_types
<size
>::Elf_Addr dst_off
)
209 size_t ndx
= this->opd_ent_ndx(dst_off
);
210 if (ndx
>= this->opd_ent_
.size())
211 this->opd_ent_
.resize(ndx
+ 1);
212 this->opd_ent_
[ndx
].gc_mark
= true;
216 process_gc_mark(Symbol_table
* symtab
)
218 for (size_t i
= 0; i
< this->opd_ent_
.size(); i
++)
219 if (this->opd_ent_
[i
].gc_mark
)
221 unsigned int shndx
= this->opd_ent_
[i
].shndx
;
222 symtab
->gc()->worklist().push(Section_id(this, shndx
));
226 // Return offset in output GOT section that this object will use
227 // as a TOC pointer. Won't be just a constant with multi-toc support.
229 toc_base_offset() const
233 set_has_small_toc_reloc()
234 { has_small_toc_reloc_
= true; }
237 has_small_toc_reloc() const
238 { return has_small_toc_reloc_
; }
241 set_has_14bit_branch(unsigned int shndx
)
243 if (shndx
>= this->has14_
.size())
244 this->has14_
.resize(shndx
+ 1);
245 this->has14_
[shndx
] = true;
249 has_14bit_branch(unsigned int shndx
) const
250 { return shndx
< this->has14_
.size() && this->has14_
[shndx
]; }
253 set_stub_table(unsigned int shndx
, Stub_table
<size
, big_endian
>* stub_table
)
255 if (shndx
>= this->stub_table_
.size())
256 this->stub_table_
.resize(shndx
+ 1);
257 this->stub_table_
[shndx
] = stub_table
;
260 Stub_table
<size
, big_endian
>*
261 stub_table(unsigned int shndx
)
263 if (shndx
< this->stub_table_
.size())
264 return this->stub_table_
[shndx
];
277 // Return index into opd_ent_ array for .opd entry at OFF.
278 // .opd entries are 24 bytes long, but they can be spaced 16 bytes
279 // apart when the language doesn't use the last 8-byte word, the
280 // environment pointer. Thus dividing the entry section offset by
281 // 16 will give an index into opd_ent_ that works for either layout
282 // of .opd. (It leaves some elements of the vector unused when .opd
283 // entries are spaced 24 bytes apart, but we don't know the spacing
284 // until relocations are processed, and in any case it is possible
285 // for an object to have some entries spaced 16 bytes apart and
286 // others 24 bytes apart.)
288 opd_ent_ndx(size_t off
) const
291 // For 32-bit the .got2 section shdnx, for 64-bit the .opd section shndx.
292 unsigned int special_
;
294 // For 64-bit, whether this object uses small model relocs to access
296 bool has_small_toc_reloc_
;
298 // Set at the start of gc_process_relocs, when we know opd_ent_
299 // vector is valid. The flag could be made atomic and set in
300 // do_read_relocs with memory_order_release and then tested with
301 // memory_order_acquire, potentially resulting in fewer entries in
305 // The first 8-byte word of an OPD entry gives the address of the
306 // entry point of the function. Relocatable object files have a
307 // relocation on this word. The following vector records the
308 // section and offset specified by these relocations.
309 std::vector
<Opd_ent
> opd_ent_
;
311 // References made to this object's .opd section when running
312 // gc_process_relocs for another object, before the opd_ent_ vector
313 // is valid for this object.
314 Access_from access_from_map_
;
316 // Whether input section has a 14-bit branch reloc.
317 std::vector
<bool> has14_
;
319 // The stub table to use for a given input section.
320 std::vector
<Stub_table
<size
, big_endian
>*> stub_table_
;
323 template<int size
, bool big_endian
>
324 class Powerpc_dynobj
: public Sized_dynobj
<size
, big_endian
>
327 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
329 Powerpc_dynobj(const std::string
& name
, Input_file
* input_file
, off_t offset
,
330 const typename
elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
331 : Sized_dynobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
),
332 opd_shndx_(0), opd_ent_()
338 // Call Sized_dynobj::do_read_symbols to read the symbols then
339 // read .opd from a dynamic object, filling in opd_ent_ vector,
341 do_read_symbols(Read_symbols_data
*);
343 // The .opd section shndx.
347 return this->opd_shndx_
;
350 // The .opd section address.
354 return this->opd_address_
;
357 // Init OPD entry arrays.
359 init_opd(size_t opd_size
)
361 size_t count
= this->opd_ent_ndx(opd_size
);
362 this->opd_ent_
.resize(count
);
365 // Return section and offset of function entry for .opd + R_OFF.
367 get_opd_ent(Address r_off
, Address
* value
= NULL
) const
369 size_t ndx
= this->opd_ent_ndx(r_off
);
370 gold_assert(ndx
< this->opd_ent_
.size());
371 gold_assert(this->opd_ent_
[ndx
].shndx
!= 0);
373 *value
= this->opd_ent_
[ndx
].off
;
374 return this->opd_ent_
[ndx
].shndx
;
377 // Set section and offset of function entry for .opd + R_OFF.
379 set_opd_ent(Address r_off
, unsigned int shndx
, Address value
)
381 size_t ndx
= this->opd_ent_ndx(r_off
);
382 gold_assert(ndx
< this->opd_ent_
.size());
383 this->opd_ent_
[ndx
].shndx
= shndx
;
384 this->opd_ent_
[ndx
].off
= value
;
388 // Used to specify extent of executable sections.
391 Sec_info(Address start_
, Address len_
, unsigned int shndx_
)
392 : start(start_
), len(len_
), shndx(shndx_
)
396 operator<(const Sec_info
& that
) const
397 { return this->start
< that
.start
; }
410 // Return index into opd_ent_ array for .opd entry at OFF.
412 opd_ent_ndx(size_t off
) const
415 // For 64-bit the .opd section shndx and address.
416 unsigned int opd_shndx_
;
417 Address opd_address_
;
419 // The first 8-byte word of an OPD entry gives the address of the
420 // entry point of the function. Records the section and offset
421 // corresponding to the address. Note that in dynamic objects,
422 // offset is *not* relative to the section.
423 std::vector
<Opd_ent
> opd_ent_
;
426 template<int size
, bool big_endian
>
427 class Target_powerpc
: public Sized_target
<size
, big_endian
>
431 Output_data_reloc
<elfcpp::SHT_RELA
, true, size
, big_endian
> Reloc_section
;
432 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
433 typedef typename
elfcpp::Elf_types
<size
>::Elf_Swxword Signed_address
;
434 static const Address invalid_address
= static_cast<Address
>(0) - 1;
435 // Offset of tp and dtp pointers from start of TLS block.
436 static const Address tp_offset
= 0x7000;
437 static const Address dtp_offset
= 0x8000;
440 : Sized_target
<size
, big_endian
>(&powerpc_info
),
441 got_(NULL
), plt_(NULL
), iplt_(NULL
), brlt_section_(NULL
),
442 glink_(NULL
), rela_dyn_(NULL
), copy_relocs_(elfcpp::R_POWERPC_COPY
),
443 dynbss_(NULL
), tlsld_got_offset_(-1U),
444 stub_tables_(), branch_lookup_table_(), branch_info_(),
445 plt_thread_safe_(false)
449 // Process the relocations to determine unreferenced sections for
450 // garbage collection.
452 gc_process_relocs(Symbol_table
* symtab
,
454 Sized_relobj_file
<size
, big_endian
>* object
,
455 unsigned int data_shndx
,
456 unsigned int sh_type
,
457 const unsigned char* prelocs
,
459 Output_section
* output_section
,
460 bool needs_special_offset_handling
,
461 size_t local_symbol_count
,
462 const unsigned char* plocal_symbols
);
464 // Scan the relocations to look for symbol adjustments.
466 scan_relocs(Symbol_table
* symtab
,
468 Sized_relobj_file
<size
, big_endian
>* object
,
469 unsigned int data_shndx
,
470 unsigned int sh_type
,
471 const unsigned char* prelocs
,
473 Output_section
* output_section
,
474 bool needs_special_offset_handling
,
475 size_t local_symbol_count
,
476 const unsigned char* plocal_symbols
);
478 // Map input .toc section to output .got section.
480 do_output_section_name(const Relobj
*, const char* name
, size_t* plen
) const
482 if (size
== 64 && strcmp(name
, ".toc") == 0)
490 // Provide linker defined save/restore functions.
492 define_save_restore_funcs(Layout
*, Symbol_table
*);
494 // No stubs unless a final link.
497 { return !parameters
->options().relocatable(); }
500 do_relax(int, const Input_objects
*, Symbol_table
*, Layout
*, const Task
*);
503 do_plt_fde_location(const Output_data
*, unsigned char*,
504 uint64_t*, off_t
*) const;
506 // Stash info about branches, for stub generation.
508 push_branch(Powerpc_relobj
<size
, big_endian
>* ppc_object
,
509 unsigned int data_shndx
, Address r_offset
,
510 unsigned int r_type
, unsigned int r_sym
, Address addend
)
512 Branch_info
info(ppc_object
, data_shndx
, r_offset
, r_type
, r_sym
, addend
);
513 this->branch_info_
.push_back(info
);
514 if (r_type
== elfcpp::R_POWERPC_REL14
515 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
516 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
)
517 ppc_object
->set_has_14bit_branch(data_shndx
);
520 Stub_table
<size
, big_endian
>*
524 do_define_standard_symbols(Symbol_table
*, Layout
*);
526 // Finalize the sections.
528 do_finalize_sections(Layout
*, const Input_objects
*, Symbol_table
*);
530 // Return the value to use for a dynamic which requires special
533 do_dynsym_value(const Symbol
*) const;
535 // Return the PLT address to use for a local symbol.
537 do_plt_address_for_local(const Relobj
*, unsigned int) const;
539 // Return the PLT address to use for a global symbol.
541 do_plt_address_for_global(const Symbol
*) const;
543 // Return the offset to use for the GOT_INDX'th got entry which is
544 // for a local tls symbol specified by OBJECT, SYMNDX.
546 do_tls_offset_for_local(const Relobj
* object
,
548 unsigned int got_indx
) const;
550 // Return the offset to use for the GOT_INDX'th got entry which is
551 // for global tls symbol GSYM.
553 do_tls_offset_for_global(Symbol
* gsym
, unsigned int got_indx
) const;
556 do_function_location(Symbol_location
*) const;
558 // Relocate a section.
560 relocate_section(const Relocate_info
<size
, big_endian
>*,
561 unsigned int sh_type
,
562 const unsigned char* prelocs
,
564 Output_section
* output_section
,
565 bool needs_special_offset_handling
,
567 Address view_address
,
568 section_size_type view_size
,
569 const Reloc_symbol_changes
*);
571 // Scan the relocs during a relocatable link.
573 scan_relocatable_relocs(Symbol_table
* symtab
,
575 Sized_relobj_file
<size
, big_endian
>* object
,
576 unsigned int data_shndx
,
577 unsigned int sh_type
,
578 const unsigned char* prelocs
,
580 Output_section
* output_section
,
581 bool needs_special_offset_handling
,
582 size_t local_symbol_count
,
583 const unsigned char* plocal_symbols
,
584 Relocatable_relocs
*);
586 // Emit relocations for a section.
588 relocate_relocs(const Relocate_info
<size
, big_endian
>*,
589 unsigned int sh_type
,
590 const unsigned char* prelocs
,
592 Output_section
* output_section
,
593 typename
elfcpp::Elf_types
<size
>::Elf_Off
594 offset_in_output_section
,
595 const Relocatable_relocs
*,
597 Address view_address
,
599 unsigned char* reloc_view
,
600 section_size_type reloc_view_size
);
602 // Return whether SYM is defined by the ABI.
604 do_is_defined_by_abi(const Symbol
* sym
) const
606 return strcmp(sym
->name(), "__tls_get_addr") == 0;
609 // Return the size of the GOT section.
613 gold_assert(this->got_
!= NULL
);
614 return this->got_
->data_size();
617 // Get the PLT section.
618 const Output_data_plt_powerpc
<size
, big_endian
>*
621 gold_assert(this->plt_
!= NULL
);
625 // Get the IPLT section.
626 const Output_data_plt_powerpc
<size
, big_endian
>*
629 gold_assert(this->iplt_
!= NULL
);
633 // Get the .glink section.
634 const Output_data_glink
<size
, big_endian
>*
635 glink_section() const
637 gold_assert(this->glink_
!= NULL
);
641 bool has_glink() const
642 { return this->glink_
!= NULL
; }
644 // Get the GOT section.
645 const Output_data_got_powerpc
<size
, big_endian
>*
648 gold_assert(this->got_
!= NULL
);
652 // Get the GOT section, creating it if necessary.
653 Output_data_got_powerpc
<size
, big_endian
>*
654 got_section(Symbol_table
*, Layout
*);
657 do_make_elf_object(const std::string
&, Input_file
*, off_t
,
658 const elfcpp::Ehdr
<size
, big_endian
>&);
660 // Return the number of entries in the GOT.
662 got_entry_count() const
664 if (this->got_
== NULL
)
666 return this->got_size() / (size
/ 8);
669 // Return the number of entries in the PLT.
671 plt_entry_count() const;
673 // Return the offset of the first non-reserved PLT entry.
675 first_plt_entry_offset() const;
677 // Return the size of each PLT entry.
679 plt_entry_size() const;
681 // Add any special sections for this symbol to the gc work list.
682 // For powerpc64, this adds the code section of a function
685 do_gc_mark_symbol(Symbol_table
* symtab
, Symbol
* sym
) const;
687 // Handle target specific gc actions when adding a gc reference from
688 // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX
689 // and DST_OFF. For powerpc64, this adds a referenc to the code
690 // section of a function descriptor.
692 do_gc_add_reference(Symbol_table
* symtab
,
694 unsigned int src_shndx
,
696 unsigned int dst_shndx
,
697 Address dst_off
) const;
699 typedef std::vector
<Stub_table
<size
, big_endian
>*> Stub_tables
;
702 { return this->stub_tables_
; }
704 const Output_data_brlt_powerpc
<size
, big_endian
>*
706 { return this->brlt_section_
; }
709 add_branch_lookup_table(Address to
)
711 unsigned int off
= this->branch_lookup_table_
.size() * (size
/ 8);
712 this->branch_lookup_table_
.insert(std::make_pair(to
, off
));
716 find_branch_lookup_table(Address to
)
718 typename
Branch_lookup_table::const_iterator p
719 = this->branch_lookup_table_
.find(to
);
720 return p
== this->branch_lookup_table_
.end() ? invalid_address
: p
->second
;
724 write_branch_lookup_table(unsigned char *oview
)
726 for (typename
Branch_lookup_table::const_iterator p
727 = this->branch_lookup_table_
.begin();
728 p
!= this->branch_lookup_table_
.end();
731 elfcpp::Swap
<32, big_endian
>::writeval(oview
+ p
->second
, p
->first
);
736 plt_thread_safe() const
737 { return this->plt_thread_safe_
; }
753 : tls_get_addr_(NOT_EXPECTED
),
754 relinfo_(NULL
), relnum_(0), r_offset_(0)
759 if (this->tls_get_addr_
!= NOT_EXPECTED
)
766 if (this->relinfo_
!= NULL
)
767 gold_error_at_location(this->relinfo_
, this->relnum_
, this->r_offset_
,
768 _("missing expected __tls_get_addr call"));
772 expect_tls_get_addr_call(
773 const Relocate_info
<size
, big_endian
>* relinfo
,
777 this->tls_get_addr_
= EXPECTED
;
778 this->relinfo_
= relinfo
;
779 this->relnum_
= relnum
;
780 this->r_offset_
= r_offset
;
784 expect_tls_get_addr_call()
785 { this->tls_get_addr_
= EXPECTED
; }
788 skip_next_tls_get_addr_call()
789 {this->tls_get_addr_
= SKIP
; }
792 maybe_skip_tls_get_addr_call(unsigned int r_type
, const Symbol
* gsym
)
794 bool is_tls_call
= ((r_type
== elfcpp::R_POWERPC_REL24
795 || r_type
== elfcpp::R_PPC_PLTREL24
)
797 && strcmp(gsym
->name(), "__tls_get_addr") == 0);
798 Tls_get_addr last_tls
= this->tls_get_addr_
;
799 this->tls_get_addr_
= NOT_EXPECTED
;
800 if (is_tls_call
&& last_tls
!= EXPECTED
)
802 else if (!is_tls_call
&& last_tls
!= NOT_EXPECTED
)
811 // What we're up to regarding calls to __tls_get_addr.
812 // On powerpc, the branch and link insn making a call to
813 // __tls_get_addr is marked with a relocation, R_PPC64_TLSGD,
814 // R_PPC64_TLSLD, R_PPC_TLSGD or R_PPC_TLSLD, in addition to the
815 // usual R_POWERPC_REL24 or R_PPC_PLTREL25 relocation on a call.
816 // The marker relocation always comes first, and has the same
817 // symbol as the reloc on the insn setting up the __tls_get_addr
818 // argument. This ties the arg setup insn with the call insn,
819 // allowing ld to safely optimize away the call. We check that
820 // every call to __tls_get_addr has a marker relocation, and that
821 // every marker relocation is on a call to __tls_get_addr.
822 Tls_get_addr tls_get_addr_
;
823 // Info about the last reloc for error message.
824 const Relocate_info
<size
, big_endian
>* relinfo_
;
829 // The class which scans relocations.
830 class Scan
: protected Track_tls
833 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
836 : Track_tls(), issued_non_pic_error_(false)
840 get_reference_flags(unsigned int r_type
);
843 local(Symbol_table
* symtab
, Layout
* layout
, Target_powerpc
* target
,
844 Sized_relobj_file
<size
, big_endian
>* object
,
845 unsigned int data_shndx
,
846 Output_section
* output_section
,
847 const elfcpp::Rela
<size
, big_endian
>& reloc
, unsigned int r_type
,
848 const elfcpp::Sym
<size
, big_endian
>& lsym
,
852 global(Symbol_table
* symtab
, Layout
* layout
, Target_powerpc
* target
,
853 Sized_relobj_file
<size
, big_endian
>* object
,
854 unsigned int data_shndx
,
855 Output_section
* output_section
,
856 const elfcpp::Rela
<size
, big_endian
>& reloc
, unsigned int r_type
,
860 local_reloc_may_be_function_pointer(Symbol_table
* , Layout
* ,
862 Sized_relobj_file
<size
, big_endian
>* ,
865 const elfcpp::Rela
<size
, big_endian
>& ,
867 const elfcpp::Sym
<size
, big_endian
>&)
871 global_reloc_may_be_function_pointer(Symbol_table
* , Layout
* ,
873 Sized_relobj_file
<size
, big_endian
>* ,
876 const elfcpp::Rela
<size
,
878 unsigned int , Symbol
*)
883 unsupported_reloc_local(Sized_relobj_file
<size
, big_endian
>*,
884 unsigned int r_type
);
887 unsupported_reloc_global(Sized_relobj_file
<size
, big_endian
>*,
888 unsigned int r_type
, Symbol
*);
891 generate_tls_call(Symbol_table
* symtab
, Layout
* layout
,
892 Target_powerpc
* target
);
895 check_non_pic(Relobj
*, unsigned int r_type
);
898 reloc_needs_plt_for_ifunc(Sized_relobj_file
<size
, big_endian
>* object
,
899 unsigned int r_type
);
901 // Whether we have issued an error about a non-PIC compilation.
902 bool issued_non_pic_error_
;
906 symval_for_branch(const Symbol_table
* symtab
, Address value
,
907 const Sized_symbol
<size
>* gsym
,
908 Powerpc_relobj
<size
, big_endian
>* object
,
909 unsigned int *dest_shndx
);
911 // The class which implements relocation.
912 class Relocate
: protected Track_tls
915 // Use 'at' branch hints when true, 'y' when false.
916 // FIXME maybe: set this with an option.
917 static const bool is_isa_v2
= true;
923 // Do a relocation. Return false if the caller should not issue
924 // any warnings about this relocation.
926 relocate(const Relocate_info
<size
, big_endian
>*, Target_powerpc
*,
927 Output_section
*, size_t relnum
,
928 const elfcpp::Rela
<size
, big_endian
>&,
929 unsigned int r_type
, const Sized_symbol
<size
>*,
930 const Symbol_value
<size
>*,
932 typename
elfcpp::Elf_types
<size
>::Elf_Addr
,
936 class Relocate_comdat_behavior
939 // Decide what the linker should do for relocations that refer to
940 // discarded comdat sections.
941 inline Comdat_behavior
942 get(const char* name
)
944 gold::Default_comdat_behavior default_behavior
;
945 Comdat_behavior ret
= default_behavior
.get(name
);
946 if (ret
== CB_WARNING
)
949 && (strcmp(name
, ".fixup") == 0
950 || strcmp(name
, ".got2") == 0))
953 && (strcmp(name
, ".opd") == 0
954 || strcmp(name
, ".toc") == 0
955 || strcmp(name
, ".toc1") == 0))
962 // A class which returns the size required for a relocation type,
963 // used while scanning relocs during a relocatable link.
964 class Relocatable_size_for_reloc
968 get_size_for_reloc(unsigned int, Relobj
*)
975 // Optimize the TLS relocation type based on what we know about the
976 // symbol. IS_FINAL is true if the final address of this symbol is
977 // known at link time.
979 tls::Tls_optimization
980 optimize_tls_gd(bool is_final
)
982 // If we are generating a shared library, then we can't do anything
984 if (parameters
->options().shared())
985 return tls::TLSOPT_NONE
;
988 return tls::TLSOPT_TO_IE
;
989 return tls::TLSOPT_TO_LE
;
992 tls::Tls_optimization
995 if (parameters
->options().shared())
996 return tls::TLSOPT_NONE
;
998 return tls::TLSOPT_TO_LE
;
1001 tls::Tls_optimization
1002 optimize_tls_ie(bool is_final
)
1004 if (!is_final
|| parameters
->options().shared())
1005 return tls::TLSOPT_NONE
;
1007 return tls::TLSOPT_TO_LE
;
1012 make_glink_section(Layout
*);
1014 // Create the PLT section.
1016 make_plt_section(Symbol_table
*, Layout
*);
1019 make_iplt_section(Symbol_table
*, Layout
*);
1022 make_brlt_section(Layout
*);
1024 // Create a PLT entry for a global symbol.
1026 make_plt_entry(Symbol_table
*, Layout
*, Symbol
*);
1028 // Create a PLT entry for a local IFUNC symbol.
1030 make_local_ifunc_plt_entry(Symbol_table
*, Layout
*,
1031 Sized_relobj_file
<size
, big_endian
>*,
1035 // Create a GOT entry for local dynamic __tls_get_addr.
1037 tlsld_got_offset(Symbol_table
* symtab
, Layout
* layout
,
1038 Sized_relobj_file
<size
, big_endian
>* object
);
1041 tlsld_got_offset() const
1043 return this->tlsld_got_offset_
;
1046 // Get the dynamic reloc section, creating it if necessary.
1048 rela_dyn_section(Layout
*);
1050 // Copy a relocation against a global symbol.
1052 copy_reloc(Symbol_table
* symtab
, Layout
* layout
,
1053 Sized_relobj_file
<size
, big_endian
>* object
,
1054 unsigned int shndx
, Output_section
* output_section
,
1055 Symbol
* sym
, const elfcpp::Rela
<size
, big_endian
>& reloc
)
1057 this->copy_relocs_
.copy_reloc(symtab
, layout
,
1058 symtab
->get_sized_symbol
<size
>(sym
),
1059 object
, shndx
, output_section
,
1060 reloc
, this->rela_dyn_section(layout
));
1063 // Look over all the input sections, deciding where to place stub.
1065 group_sections(Layout
*, const Task
*);
1067 // Sort output sections by address.
1068 struct Sort_sections
1071 operator()(const Output_section
* sec1
, const Output_section
* sec2
)
1072 { return sec1
->address() < sec2
->address(); }
1078 Branch_info(Powerpc_relobj
<size
, big_endian
>* ppc_object
,
1079 unsigned int data_shndx
,
1081 unsigned int r_type
,
1084 : object_(ppc_object
), shndx_(data_shndx
), offset_(r_offset
),
1085 r_type_(r_type
), r_sym_(r_sym
), addend_(addend
)
1091 // If this branch needs a plt call stub, or a long branch stub, make one.
1093 make_stub(Stub_table
<size
, big_endian
>*,
1094 Stub_table
<size
, big_endian
>*,
1095 Symbol_table
*) const;
1098 // The branch location..
1099 Powerpc_relobj
<size
, big_endian
>* object_
;
1100 unsigned int shndx_
;
1102 // ..and the branch type and destination.
1103 unsigned int r_type_
;
1104 unsigned int r_sym_
;
1108 // Information about this specific target which we pass to the
1109 // general Target structure.
1110 static Target::Target_info powerpc_info
;
1112 // The types of GOT entries needed for this platform.
1113 // These values are exposed to the ABI in an incremental link.
1114 // Do not renumber existing values without changing the version
1115 // number of the .gnu_incremental_inputs section.
1119 GOT_TYPE_TLSGD
, // double entry for @got@tlsgd
1120 GOT_TYPE_DTPREL
, // entry for @got@dtprel
1121 GOT_TYPE_TPREL
// entry for @got@tprel
1125 Output_data_got_powerpc
<size
, big_endian
>* got_
;
1127 Output_data_plt_powerpc
<size
, big_endian
>* plt_
;
1128 // The IPLT section.
1129 Output_data_plt_powerpc
<size
, big_endian
>* iplt_
;
1130 // Section holding long branch destinations.
1131 Output_data_brlt_powerpc
<size
, big_endian
>* brlt_section_
;
1132 // The .glink section.
1133 Output_data_glink
<size
, big_endian
>* glink_
;
1134 // The dynamic reloc section.
1135 Reloc_section
* rela_dyn_
;
1136 // Relocs saved to avoid a COPY reloc.
1137 Copy_relocs
<elfcpp::SHT_RELA
, size
, big_endian
> copy_relocs_
;
1138 // Space for variables copied with a COPY reloc.
1139 Output_data_space
* dynbss_
;
1140 // Offset of the GOT entry for local dynamic __tls_get_addr calls.
1141 unsigned int tlsld_got_offset_
;
1143 Stub_tables stub_tables_
;
1144 typedef Unordered_map
<Address
, unsigned int> Branch_lookup_table
;
1145 Branch_lookup_table branch_lookup_table_
;
1147 typedef std::vector
<Branch_info
> Branches
;
1148 Branches branch_info_
;
1150 bool plt_thread_safe_
;
1154 Target::Target_info Target_powerpc
<32, true>::powerpc_info
=
1157 true, // is_big_endian
1158 elfcpp::EM_PPC
, // machine_code
1159 false, // has_make_symbol
1160 false, // has_resolve
1161 false, // has_code_fill
1162 true, // is_default_stack_executable
1163 false, // can_icf_inline_merge_sections
1165 "/usr/lib/ld.so.1", // dynamic_linker
1166 0x10000000, // default_text_segment_address
1167 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1168 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1169 false, // isolate_execinstr
1171 elfcpp::SHN_UNDEF
, // small_common_shndx
1172 elfcpp::SHN_UNDEF
, // large_common_shndx
1173 0, // small_common_section_flags
1174 0, // large_common_section_flags
1175 NULL
, // attributes_section
1176 NULL
// attributes_vendor
1180 Target::Target_info Target_powerpc
<32, false>::powerpc_info
=
1183 false, // is_big_endian
1184 elfcpp::EM_PPC
, // machine_code
1185 false, // has_make_symbol
1186 false, // has_resolve
1187 false, // has_code_fill
1188 true, // is_default_stack_executable
1189 false, // can_icf_inline_merge_sections
1191 "/usr/lib/ld.so.1", // dynamic_linker
1192 0x10000000, // default_text_segment_address
1193 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1194 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1195 false, // isolate_execinstr
1197 elfcpp::SHN_UNDEF
, // small_common_shndx
1198 elfcpp::SHN_UNDEF
, // large_common_shndx
1199 0, // small_common_section_flags
1200 0, // large_common_section_flags
1201 NULL
, // attributes_section
1202 NULL
// attributes_vendor
1206 Target::Target_info Target_powerpc
<64, true>::powerpc_info
=
1209 true, // is_big_endian
1210 elfcpp::EM_PPC64
, // machine_code
1211 false, // has_make_symbol
1212 false, // has_resolve
1213 false, // has_code_fill
1214 true, // is_default_stack_executable
1215 false, // can_icf_inline_merge_sections
1217 "/usr/lib/ld.so.1", // dynamic_linker
1218 0x10000000, // default_text_segment_address
1219 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1220 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1221 false, // isolate_execinstr
1223 elfcpp::SHN_UNDEF
, // small_common_shndx
1224 elfcpp::SHN_UNDEF
, // large_common_shndx
1225 0, // small_common_section_flags
1226 0, // large_common_section_flags
1227 NULL
, // attributes_section
1228 NULL
// attributes_vendor
1232 Target::Target_info Target_powerpc
<64, false>::powerpc_info
=
1235 false, // is_big_endian
1236 elfcpp::EM_PPC64
, // machine_code
1237 false, // has_make_symbol
1238 false, // has_resolve
1239 false, // has_code_fill
1240 true, // is_default_stack_executable
1241 false, // can_icf_inline_merge_sections
1243 "/usr/lib/ld.so.1", // dynamic_linker
1244 0x10000000, // default_text_segment_address
1245 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1246 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1247 false, // isolate_execinstr
1249 elfcpp::SHN_UNDEF
, // small_common_shndx
1250 elfcpp::SHN_UNDEF
, // large_common_shndx
1251 0, // small_common_section_flags
1252 0, // large_common_section_flags
1253 NULL
, // attributes_section
1254 NULL
// attributes_vendor
1258 is_branch_reloc(unsigned int r_type
)
1260 return (r_type
== elfcpp::R_POWERPC_REL24
1261 || r_type
== elfcpp::R_PPC_PLTREL24
1262 || r_type
== elfcpp::R_PPC_LOCAL24PC
1263 || r_type
== elfcpp::R_POWERPC_REL14
1264 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
1265 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
1266 || r_type
== elfcpp::R_POWERPC_ADDR24
1267 || r_type
== elfcpp::R_POWERPC_ADDR14
1268 || r_type
== elfcpp::R_POWERPC_ADDR14_BRTAKEN
1269 || r_type
== elfcpp::R_POWERPC_ADDR14_BRNTAKEN
);
1272 // If INSN is an opcode that may be used with an @tls operand, return
1273 // the transformed insn for TLS optimisation, otherwise return 0. If
1274 // REG is non-zero only match an insn with RB or RA equal to REG.
1276 at_tls_transform(uint32_t insn
, unsigned int reg
)
1278 if ((insn
& (0x3f << 26)) != 31 << 26)
1282 if (reg
== 0 || ((insn
>> 11) & 0x1f) == reg
)
1283 rtra
= insn
& ((1 << 26) - (1 << 16));
1284 else if (((insn
>> 16) & 0x1f) == reg
)
1285 rtra
= (insn
& (0x1f << 21)) | ((insn
& (0x1f << 11)) << 5);
1289 if ((insn
& (0x3ff << 1)) == 266 << 1)
1292 else if ((insn
& (0x1f << 1)) == 23 << 1
1293 && ((insn
& (0x1f << 6)) < 14 << 6
1294 || ((insn
& (0x1f << 6)) >= 16 << 6
1295 && (insn
& (0x1f << 6)) < 24 << 6)))
1296 // load and store indexed -> dform
1297 insn
= (32 | ((insn
>> 6) & 0x1f)) << 26;
1298 else if ((insn
& (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
1299 // ldx, ldux, stdx, stdux -> ld, ldu, std, stdu
1300 insn
= ((58 | ((insn
>> 6) & 4)) << 26) | ((insn
>> 6) & 1);
1301 else if ((insn
& (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
1303 insn
= (58 << 26) | 2;
1310 // Modified version of symtab.h class Symbol member
1311 // Given a direct absolute or pc-relative static relocation against
1312 // the global symbol, this function returns whether a dynamic relocation
1317 needs_dynamic_reloc(const Symbol
* gsym
, int flags
)
1319 // No dynamic relocations in a static link!
1320 if (parameters
->doing_static_link())
1323 // A reference to an undefined symbol from an executable should be
1324 // statically resolved to 0, and does not need a dynamic relocation.
1325 // This matches gnu ld behavior.
1326 if (gsym
->is_undefined() && !parameters
->options().shared())
1329 // A reference to an absolute symbol does not need a dynamic relocation.
1330 if (gsym
->is_absolute())
1333 // An absolute reference within a position-independent output file
1334 // will need a dynamic relocation.
1335 if ((flags
& Symbol::ABSOLUTE_REF
)
1336 && parameters
->options().output_is_position_independent())
1339 // A function call that can branch to a local PLT entry does not need
1340 // a dynamic relocation.
1341 if ((flags
& Symbol::FUNCTION_CALL
) && gsym
->has_plt_offset())
1344 // A reference to any PLT entry in a non-position-independent executable
1345 // does not need a dynamic relocation.
1346 // Except due to having function descriptors on powerpc64 we don't define
1347 // functions to their plt code in an executable, so this doesn't apply.
1349 && !parameters
->options().output_is_position_independent()
1350 && gsym
->has_plt_offset())
1353 // A reference to a symbol defined in a dynamic object or to a
1354 // symbol that is preemptible will need a dynamic relocation.
1355 if (gsym
->is_from_dynobj()
1356 || gsym
->is_undefined()
1357 || gsym
->is_preemptible())
1360 // For all other cases, return FALSE.
1364 // Modified version of symtab.h class Symbol member
1365 // Whether we should use the PLT offset associated with a symbol for
1366 // a relocation. FLAGS is a set of Reference_flags.
1370 use_plt_offset(const Symbol
* gsym
, int flags
)
1372 // If the symbol doesn't have a PLT offset, then naturally we
1373 // don't want to use it.
1374 if (!gsym
->has_plt_offset())
1377 // For a STT_GNU_IFUNC symbol we always have to use the PLT entry.
1378 if (gsym
->type() == elfcpp::STT_GNU_IFUNC
)
1381 // If we are going to generate a dynamic relocation, then we will
1382 // wind up using that, so no need to use the PLT entry.
1383 if (needs_dynamic_reloc
<size
>(gsym
, flags
))
1386 // If the symbol is from a dynamic object, we need to use the PLT
1388 if (gsym
->is_from_dynobj())
1391 // If we are generating a shared object, and this symbol is
1392 // undefined or preemptible, we need to use the PLT entry.
1393 if (parameters
->options().shared()
1394 && (gsym
->is_undefined() || gsym
->is_preemptible()))
1397 // If this is a call to a weak undefined symbol, we need to use
1398 // the PLT entry; the symbol may be defined by a library loaded
1400 if ((flags
& Symbol::FUNCTION_CALL
) && gsym
->is_weak_undefined())
1403 // Otherwise we can use the regular definition.
1407 template<int size
, bool big_endian
>
1408 class Powerpc_relocate_functions
1425 typedef Powerpc_relocate_functions
<size
, big_endian
> This
;
1426 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
1428 template<int valsize
>
1430 has_overflow_signed(Address value
)
1432 // limit = 1 << (valsize - 1) without shift count exceeding size of type
1433 Address limit
= static_cast<Address
>(1) << ((valsize
- 1) >> 1);
1434 limit
<<= ((valsize
- 1) >> 1);
1435 limit
<<= ((valsize
- 1) - 2 * ((valsize
- 1) >> 1));
1436 return value
+ limit
> (limit
<< 1) - 1;
1439 template<int valsize
>
1441 has_overflow_bitfield(Address value
)
1443 Address limit
= static_cast<Address
>(1) << ((valsize
- 1) >> 1);
1444 limit
<<= ((valsize
- 1) >> 1);
1445 limit
<<= ((valsize
- 1) - 2 * ((valsize
- 1) >> 1));
1446 return value
> (limit
<< 1) - 1 && value
+ limit
> (limit
<< 1) - 1;
1449 template<int valsize
>
1450 static inline Status
1451 overflowed(Address value
, Overflow_check overflow
)
1453 if (overflow
== CHECK_SIGNED
)
1455 if (has_overflow_signed
<valsize
>(value
))
1456 return STATUS_OVERFLOW
;
1458 else if (overflow
== CHECK_BITFIELD
)
1460 if (has_overflow_bitfield
<valsize
>(value
))
1461 return STATUS_OVERFLOW
;
1466 // Do a simple RELA relocation
1467 template<int valsize
>
1468 static inline Status
1469 rela(unsigned char* view
, Address value
, Overflow_check overflow
)
1471 typedef typename
elfcpp::Swap
<valsize
, big_endian
>::Valtype Valtype
;
1472 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
1473 elfcpp::Swap
<valsize
, big_endian
>::writeval(wv
, value
);
1474 return overflowed
<valsize
>(value
, overflow
);
1477 template<int valsize
>
1478 static inline Status
1479 rela(unsigned char* view
,
1480 unsigned int right_shift
,
1481 typename
elfcpp::Valtype_base
<valsize
>::Valtype dst_mask
,
1483 Overflow_check overflow
)
1485 typedef typename
elfcpp::Swap
<valsize
, big_endian
>::Valtype Valtype
;
1486 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
1487 Valtype val
= elfcpp::Swap
<valsize
, big_endian
>::readval(wv
);
1488 Valtype reloc
= value
>> right_shift
;
1491 elfcpp::Swap
<valsize
, big_endian
>::writeval(wv
, val
| reloc
);
1492 return overflowed
<valsize
>(value
>> right_shift
, overflow
);
1495 // Do a simple RELA relocation, unaligned.
1496 template<int valsize
>
1497 static inline Status
1498 rela_ua(unsigned char* view
, Address value
, Overflow_check overflow
)
1500 elfcpp::Swap_unaligned
<valsize
, big_endian
>::writeval(view
, value
);
1501 return overflowed
<valsize
>(value
, overflow
);
1504 template<int valsize
>
1505 static inline Status
1506 rela_ua(unsigned char* view
,
1507 unsigned int right_shift
,
1508 typename
elfcpp::Valtype_base
<valsize
>::Valtype dst_mask
,
1510 Overflow_check overflow
)
1512 typedef typename
elfcpp::Swap_unaligned
<valsize
, big_endian
>::Valtype
1514 Valtype val
= elfcpp::Swap
<valsize
, big_endian
>::readval(view
);
1515 Valtype reloc
= value
>> right_shift
;
1518 elfcpp::Swap_unaligned
<valsize
, big_endian
>::writeval(view
, val
| reloc
);
1519 return overflowed
<valsize
>(value
>> right_shift
, overflow
);
1523 // R_PPC64_ADDR64: (Symbol + Addend)
1525 addr64(unsigned char* view
, Address value
)
1526 { This::template rela
<64>(view
, value
, CHECK_NONE
); }
1528 // R_PPC64_UADDR64: (Symbol + Addend) unaligned
1530 addr64_u(unsigned char* view
, Address value
)
1531 { This::template rela_ua
<64>(view
, value
, CHECK_NONE
); }
1533 // R_POWERPC_ADDR32: (Symbol + Addend)
1534 static inline Status
1535 addr32(unsigned char* view
, Address value
, Overflow_check overflow
)
1536 { return This::template rela
<32>(view
, value
, overflow
); }
1538 // R_POWERPC_UADDR32: (Symbol + Addend) unaligned
1539 static inline Status
1540 addr32_u(unsigned char* view
, Address value
, Overflow_check overflow
)
1541 { return This::template rela_ua
<32>(view
, value
, overflow
); }
1543 // R_POWERPC_ADDR24: (Symbol + Addend) & 0x3fffffc
1544 static inline Status
1545 addr24(unsigned char* view
, Address value
, Overflow_check overflow
)
1547 Status stat
= This::template rela
<32>(view
, 0, 0x03fffffc, value
, overflow
);
1548 if (overflow
!= CHECK_NONE
&& (value
& 3) != 0)
1549 stat
= STATUS_OVERFLOW
;
1553 // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff
1554 static inline Status
1555 addr16(unsigned char* view
, Address value
, Overflow_check overflow
)
1556 { return This::template rela
<16>(view
, value
, overflow
); }
1558 // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff, unaligned
1559 static inline Status
1560 addr16_u(unsigned char* view
, Address value
, Overflow_check overflow
)
1561 { return This::template rela_ua
<16>(view
, value
, overflow
); }
1563 // R_POWERPC_ADDR16_DS: (Symbol + Addend) & 0xfffc
1564 static inline Status
1565 addr16_ds(unsigned char* view
, Address value
, Overflow_check overflow
)
1567 Status stat
= This::template rela
<16>(view
, 0, 0xfffc, value
, overflow
);
1568 if (overflow
!= CHECK_NONE
&& (value
& 3) != 0)
1569 stat
= STATUS_OVERFLOW
;
1573 // R_POWERPC_ADDR16_HI: ((Symbol + Addend) >> 16) & 0xffff
1575 addr16_hi(unsigned char* view
, Address value
)
1576 { This::template rela
<16>(view
, 16, 0xffff, value
, CHECK_NONE
); }
1578 // R_POWERPC_ADDR16_HA: ((Symbol + Addend + 0x8000) >> 16) & 0xffff
1580 addr16_ha(unsigned char* view
, Address value
)
1581 { This::addr16_hi(view
, value
+ 0x8000); }
1583 // R_POWERPC_ADDR16_HIGHER: ((Symbol + Addend) >> 32) & 0xffff
1585 addr16_hi2(unsigned char* view
, Address value
)
1586 { This::template rela
<16>(view
, 32, 0xffff, value
, CHECK_NONE
); }
1588 // R_POWERPC_ADDR16_HIGHERA: ((Symbol + Addend + 0x8000) >> 32) & 0xffff
1590 addr16_ha2(unsigned char* view
, Address value
)
1591 { This::addr16_hi2(view
, value
+ 0x8000); }
1593 // R_POWERPC_ADDR16_HIGHEST: ((Symbol + Addend) >> 48) & 0xffff
1595 addr16_hi3(unsigned char* view
, Address value
)
1596 { This::template rela
<16>(view
, 48, 0xffff, value
, CHECK_NONE
); }
1598 // R_POWERPC_ADDR16_HIGHESTA: ((Symbol + Addend + 0x8000) >> 48) & 0xffff
1600 addr16_ha3(unsigned char* view
, Address value
)
1601 { This::addr16_hi3(view
, value
+ 0x8000); }
1603 // R_POWERPC_ADDR14: (Symbol + Addend) & 0xfffc
1604 static inline Status
1605 addr14(unsigned char* view
, Address value
, Overflow_check overflow
)
1607 Status stat
= This::template rela
<32>(view
, 0, 0xfffc, value
, overflow
);
1608 if (overflow
!= CHECK_NONE
&& (value
& 3) != 0)
1609 stat
= STATUS_OVERFLOW
;
1614 // Stash away the index of .got2 or .opd in a relocatable object, if
1615 // such a section exists.
1617 template<int size
, bool big_endian
>
1619 Powerpc_relobj
<size
, big_endian
>::do_find_special_sections(
1620 Read_symbols_data
* sd
)
1622 const unsigned char* const pshdrs
= sd
->section_headers
->data();
1623 const unsigned char* namesu
= sd
->section_names
->data();
1624 const char* names
= reinterpret_cast<const char*>(namesu
);
1625 section_size_type names_size
= sd
->section_names_size
;
1626 const unsigned char* s
;
1628 s
= this->template find_shdr
<size
, big_endian
>(pshdrs
,
1629 size
== 32 ? ".got2" : ".opd",
1630 names
, names_size
, NULL
);
1633 unsigned int ndx
= (s
- pshdrs
) / elfcpp::Elf_sizes
<size
>::shdr_size
;
1634 this->special_
= ndx
;
1636 return Sized_relobj_file
<size
, big_endian
>::do_find_special_sections(sd
);
1639 // Examine .rela.opd to build info about function entry points.
1641 template<int size
, bool big_endian
>
1643 Powerpc_relobj
<size
, big_endian
>::scan_opd_relocs(
1645 const unsigned char* prelocs
,
1646 const unsigned char* plocal_syms
)
1650 typedef typename Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::Reloc
1652 const int reloc_size
1653 = Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
1654 const int sym_size
= elfcpp::Elf_sizes
<size
>::sym_size
;
1655 Address expected_off
= 0;
1656 bool regular
= true;
1657 unsigned int opd_ent_size
= 0;
1659 for (size_t i
= 0; i
< reloc_count
; ++i
, prelocs
+= reloc_size
)
1661 Reltype
reloc(prelocs
);
1662 typename
elfcpp::Elf_types
<size
>::Elf_WXword r_info
1663 = reloc
.get_r_info();
1664 unsigned int r_type
= elfcpp::elf_r_type
<size
>(r_info
);
1665 if (r_type
== elfcpp::R_PPC64_ADDR64
)
1667 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(r_info
);
1668 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
;
1671 if (r_sym
< this->local_symbol_count())
1673 typename
elfcpp::Sym
<size
, big_endian
>
1674 lsym(plocal_syms
+ r_sym
* sym_size
);
1675 shndx
= lsym
.get_st_shndx();
1676 shndx
= this->adjust_sym_shndx(r_sym
, shndx
, &is_ordinary
);
1677 value
= lsym
.get_st_value();
1680 shndx
= this->symbol_section_and_value(r_sym
, &value
,
1682 this->set_opd_ent(reloc
.get_r_offset(), shndx
,
1683 value
+ reloc
.get_r_addend());
1686 expected_off
= reloc
.get_r_offset();
1687 opd_ent_size
= expected_off
;
1689 else if (expected_off
!= reloc
.get_r_offset())
1691 expected_off
+= opd_ent_size
;
1693 else if (r_type
== elfcpp::R_PPC64_TOC
)
1695 if (expected_off
- opd_ent_size
+ 8 != reloc
.get_r_offset())
1700 gold_warning(_("%s: unexpected reloc type %u in .opd section"),
1701 this->name().c_str(), r_type
);
1705 if (reloc_count
<= 2)
1706 opd_ent_size
= this->section_size(this->opd_shndx());
1707 if (opd_ent_size
!= 24 && opd_ent_size
!= 16)
1711 gold_warning(_("%s: .opd is not a regular array of opd entries"),
1712 this->name().c_str());
1718 template<int size
, bool big_endian
>
1720 Powerpc_relobj
<size
, big_endian
>::do_read_relocs(Read_relocs_data
* rd
)
1722 Sized_relobj_file
<size
, big_endian
>::do_read_relocs(rd
);
1725 for (Read_relocs_data::Relocs_list::iterator p
= rd
->relocs
.begin();
1726 p
!= rd
->relocs
.end();
1729 if (p
->data_shndx
== this->opd_shndx())
1731 uint64_t opd_size
= this->section_size(this->opd_shndx());
1732 gold_assert(opd_size
== static_cast<size_t>(opd_size
));
1735 this->init_opd(opd_size
);
1736 this->scan_opd_relocs(p
->reloc_count
, p
->contents
->data(),
1737 rd
->local_symbols
->data());
1745 // Call Sized_dynobj::do_read_symbols to read the symbols then
1746 // read .opd from a dynamic object, filling in opd_ent_ vector,
1748 template<int size
, bool big_endian
>
1750 Powerpc_dynobj
<size
, big_endian
>::do_read_symbols(Read_symbols_data
* sd
)
1752 Sized_dynobj
<size
, big_endian
>::do_read_symbols(sd
);
1755 const int shdr_size
= elfcpp::Elf_sizes
<size
>::shdr_size
;
1756 const unsigned char* const pshdrs
= sd
->section_headers
->data();
1757 const unsigned char* namesu
= sd
->section_names
->data();
1758 const char* names
= reinterpret_cast<const char*>(namesu
);
1759 const unsigned char* s
= NULL
;
1760 const unsigned char* opd
;
1761 section_size_type opd_size
;
1763 // Find and read .opd section.
1766 s
= this->template find_shdr
<size
, big_endian
>(pshdrs
, ".opd", names
,
1767 sd
->section_names_size
,
1772 typename
elfcpp::Shdr
<size
, big_endian
> shdr(s
);
1773 if (shdr
.get_sh_type() == elfcpp::SHT_PROGBITS
1774 && (shdr
.get_sh_flags() & elfcpp::SHF_ALLOC
) != 0)
1776 this->opd_shndx_
= (s
- pshdrs
) / shdr_size
;
1777 this->opd_address_
= shdr
.get_sh_addr();
1778 opd_size
= convert_to_section_size_type(shdr
.get_sh_size());
1779 opd
= this->get_view(shdr
.get_sh_offset(), opd_size
,
1785 // Build set of executable sections.
1786 // Using a set is probably overkill. There is likely to be only
1787 // a few executable sections, typically .init, .text and .fini,
1788 // and they are generally grouped together.
1789 typedef std::set
<Sec_info
> Exec_sections
;
1790 Exec_sections exec_sections
;
1792 for (unsigned int i
= 1; i
< this->shnum(); ++i
, s
+= shdr_size
)
1794 typename
elfcpp::Shdr
<size
, big_endian
> shdr(s
);
1795 if (shdr
.get_sh_type() == elfcpp::SHT_PROGBITS
1796 && ((shdr
.get_sh_flags()
1797 & (elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
))
1798 == (elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
))
1799 && shdr
.get_sh_size() != 0)
1801 exec_sections
.insert(Sec_info(shdr
.get_sh_addr(),
1802 shdr
.get_sh_size(), i
));
1805 if (exec_sections
.empty())
1808 // Look over the OPD entries. This is complicated by the fact
1809 // that some binaries will use two-word entries while others
1810 // will use the standard three-word entries. In most cases
1811 // the third word (the environment pointer for languages like
1812 // Pascal) is unused and will be zero. If the third word is
1813 // used it should not be pointing into executable sections,
1815 this->init_opd(opd_size
);
1816 for (const unsigned char* p
= opd
; p
< opd
+ opd_size
; p
+= 8)
1818 typedef typename
elfcpp::Swap
<64, big_endian
>::Valtype Valtype
;
1819 const Valtype
* valp
= reinterpret_cast<const Valtype
*>(p
);
1820 Valtype val
= elfcpp::Swap
<64, big_endian
>::readval(valp
);
1822 // Chances are that this is the third word of an OPD entry.
1824 typename
Exec_sections::const_iterator e
1825 = exec_sections
.upper_bound(Sec_info(val
, 0, 0));
1826 if (e
!= exec_sections
.begin())
1829 if (e
->start
<= val
&& val
< e
->start
+ e
->len
)
1831 // We have an address in an executable section.
1832 // VAL ought to be the function entry, set it up.
1833 this->set_opd_ent(p
- opd
, e
->shndx
, val
);
1834 // Skip second word of OPD entry, the TOC pointer.
1838 // If we didn't match any executable sections, we likely
1839 // have a non-zero third word in the OPD entry.
1844 // Set up some symbols.
1846 template<int size
, bool big_endian
>
1848 Target_powerpc
<size
, big_endian
>::do_define_standard_symbols(
1849 Symbol_table
* symtab
,
1854 // Define _GLOBAL_OFFSET_TABLE_ to ensure it isn't seen as
1855 // undefined when scanning relocs (and thus requires
1856 // non-relative dynamic relocs). The proper value will be
1858 Symbol
*gotsym
= symtab
->lookup("_GLOBAL_OFFSET_TABLE_", NULL
);
1859 if (gotsym
!= NULL
&& gotsym
->is_undefined())
1861 Target_powerpc
<size
, big_endian
>* target
=
1862 static_cast<Target_powerpc
<size
, big_endian
>*>(
1863 parameters
->sized_target
<size
, big_endian
>());
1864 Output_data_got_powerpc
<size
, big_endian
>* got
1865 = target
->got_section(symtab
, layout
);
1866 symtab
->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL
,
1867 Symbol_table::PREDEFINED
,
1871 elfcpp::STV_HIDDEN
, 0,
1875 // Define _SDA_BASE_ at the start of the .sdata section + 32768.
1876 Symbol
*sdasym
= symtab
->lookup("_SDA_BASE_", NULL
);
1877 if (sdasym
!= NULL
&& sdasym
->is_undefined())
1879 Output_data_space
* sdata
= new Output_data_space(4, "** sdata");
1881 = layout
->add_output_section_data(".sdata", 0,
1883 | elfcpp::SHF_WRITE
,
1884 sdata
, ORDER_SMALL_DATA
, false);
1885 symtab
->define_in_output_data("_SDA_BASE_", NULL
,
1886 Symbol_table::PREDEFINED
,
1887 os
, 32768, 0, elfcpp::STT_OBJECT
,
1888 elfcpp::STB_LOCAL
, elfcpp::STV_HIDDEN
,
1894 // Set up PowerPC target specific relobj.
1896 template<int size
, bool big_endian
>
1898 Target_powerpc
<size
, big_endian
>::do_make_elf_object(
1899 const std::string
& name
,
1900 Input_file
* input_file
,
1901 off_t offset
, const elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
1903 int et
= ehdr
.get_e_type();
1904 // ET_EXEC files are valid input for --just-symbols/-R,
1905 // and we treat them as relocatable objects.
1906 if (et
== elfcpp::ET_REL
1907 || (et
== elfcpp::ET_EXEC
&& input_file
->just_symbols()))
1909 Powerpc_relobj
<size
, big_endian
>* obj
=
1910 new Powerpc_relobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
);
1914 else if (et
== elfcpp::ET_DYN
)
1916 Powerpc_dynobj
<size
, big_endian
>* obj
=
1917 new Powerpc_dynobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
);
1923 gold_error(_("%s: unsupported ELF file type %d"), name
.c_str(), et
);
1928 template<int size
, bool big_endian
>
1929 class Output_data_got_powerpc
: public Output_data_got
<size
, big_endian
>
1932 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Valtype
;
1933 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true, size
, big_endian
> Rela_dyn
;
1935 Output_data_got_powerpc(Symbol_table
* symtab
, Layout
* layout
)
1936 : Output_data_got
<size
, big_endian
>(),
1937 symtab_(symtab
), layout_(layout
),
1938 header_ent_cnt_(size
== 32 ? 3 : 1),
1939 header_index_(size
== 32 ? 0x2000 : 0)
1944 // Create a new GOT entry and return its offset.
1946 add_got_entry(Got_entry got_entry
)
1948 this->reserve_ent();
1949 return Output_data_got
<size
, big_endian
>::add_got_entry(got_entry
);
1952 // Create a pair of new GOT entries and return the offset of the first.
1954 add_got_entry_pair(Got_entry got_entry_1
, Got_entry got_entry_2
)
1956 this->reserve_ent(2);
1957 return Output_data_got
<size
, big_endian
>::add_got_entry_pair(got_entry_1
,
1962 add_constant_pair(Valtype c1
, Valtype c2
)
1964 this->reserve_ent(2);
1965 unsigned int got_offset
= this->add_constant(c1
);
1966 this->add_constant(c2
);
1970 // Offset of _GLOBAL_OFFSET_TABLE_.
1974 return this->got_offset(this->header_index_
);
1977 // Offset of base used to access the GOT/TOC.
1978 // The got/toc pointer reg will be set to this value.
1980 got_base_offset(const Powerpc_relobj
<size
, big_endian
>* object
) const
1983 return this->g_o_t();
1985 return (this->output_section()->address()
1986 + object
->toc_base_offset()
1990 // Ensure our GOT has a header.
1992 set_final_data_size()
1994 if (this->header_ent_cnt_
!= 0)
1995 this->make_header();
1996 Output_data_got
<size
, big_endian
>::set_final_data_size();
1999 // First word of GOT header needs some values that are not
2000 // handled by Output_data_got so poke them in here.
2001 // For 32-bit, address of .dynamic, for 64-bit, address of TOCbase.
2003 do_write(Output_file
* of
)
2006 if (size
== 32 && this->layout_
->dynamic_data() != NULL
)
2007 val
= this->layout_
->dynamic_section()->address();
2009 val
= this->output_section()->address() + 0x8000;
2010 this->replace_constant(this->header_index_
, val
);
2011 Output_data_got
<size
, big_endian
>::do_write(of
);
2016 reserve_ent(unsigned int cnt
= 1)
2018 if (this->header_ent_cnt_
== 0)
2020 if (this->num_entries() + cnt
> this->header_index_
)
2021 this->make_header();
2027 this->header_ent_cnt_
= 0;
2028 this->header_index_
= this->num_entries();
2031 Output_data_got
<size
, big_endian
>::add_constant(0);
2032 Output_data_got
<size
, big_endian
>::add_constant(0);
2033 Output_data_got
<size
, big_endian
>::add_constant(0);
2035 // Define _GLOBAL_OFFSET_TABLE_ at the header
2036 Symbol
*gotsym
= this->symtab_
->lookup("_GLOBAL_OFFSET_TABLE_", NULL
);
2039 Sized_symbol
<size
>* sym
= static_cast<Sized_symbol
<size
>*>(gotsym
);
2040 sym
->set_value(this->g_o_t());
2043 this->symtab_
->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL
,
2044 Symbol_table::PREDEFINED
,
2045 this, this->g_o_t(), 0,
2048 elfcpp::STV_HIDDEN
, 0,
2052 Output_data_got
<size
, big_endian
>::add_constant(0);
2055 // Stashed pointers.
2056 Symbol_table
* symtab_
;
2060 unsigned int header_ent_cnt_
;
2061 // GOT header index.
2062 unsigned int header_index_
;
2065 // Get the GOT section, creating it if necessary.
2067 template<int size
, bool big_endian
>
2068 Output_data_got_powerpc
<size
, big_endian
>*
2069 Target_powerpc
<size
, big_endian
>::got_section(Symbol_table
* symtab
,
2072 if (this->got_
== NULL
)
2074 gold_assert(symtab
!= NULL
&& layout
!= NULL
);
2077 = new Output_data_got_powerpc
<size
, big_endian
>(symtab
, layout
);
2079 layout
->add_output_section_data(".got", elfcpp::SHT_PROGBITS
,
2080 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
2081 this->got_
, ORDER_DATA
, false);
2087 // Get the dynamic reloc section, creating it if necessary.
2089 template<int size
, bool big_endian
>
2090 typename Target_powerpc
<size
, big_endian
>::Reloc_section
*
2091 Target_powerpc
<size
, big_endian
>::rela_dyn_section(Layout
* layout
)
2093 if (this->rela_dyn_
== NULL
)
2095 gold_assert(layout
!= NULL
);
2096 this->rela_dyn_
= new Reloc_section(parameters
->options().combreloc());
2097 layout
->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA
,
2098 elfcpp::SHF_ALLOC
, this->rela_dyn_
,
2099 ORDER_DYNAMIC_RELOCS
, false);
2101 return this->rela_dyn_
;
2107 // Determine the stub group size. The group size is the absolute
2108 // value of the parameter --stub-group-size. If --stub-group-size
2109 // is passed a negative value, we restrict stubs to be always before
2110 // the stubbed branches.
2111 Stub_control(int32_t size
)
2112 : state_(NO_GROUP
), stub_group_size_(abs(size
)),
2113 stub14_group_size_(abs(size
)),
2114 stubs_always_before_branch_(size
< 0), suppress_size_errors_(false),
2115 group_end_addr_(0), owner_(NULL
), output_section_(NULL
)
2117 if (stub_group_size_
== 1)
2120 if (stubs_always_before_branch_
)
2122 stub_group_size_
= 0x1e00000;
2123 stub14_group_size_
= 0x7800;
2127 stub_group_size_
= 0x1c00000;
2128 stub14_group_size_
= 0x7000;
2130 suppress_size_errors_
= true;
2134 // Return true iff input section can be handled by current stub
2137 can_add_to_stub_group(Output_section
* o
,
2138 const Output_section::Input_section
* i
,
2141 const Output_section::Input_section
*
2147 { return output_section_
; }
2153 FINDING_STUB_SECTION
,
2158 uint32_t stub_group_size_
;
2159 uint32_t stub14_group_size_
;
2160 bool stubs_always_before_branch_
;
2161 bool suppress_size_errors_
;
2162 uint64_t group_end_addr_
;
2163 const Output_section::Input_section
* owner_
;
2164 Output_section
* output_section_
;
2167 // Return true iff input section can be handled by current stub/
2171 Stub_control::can_add_to_stub_group(Output_section
* o
,
2172 const Output_section::Input_section
* i
,
2176 = has14
? this->stub14_group_size_
: this->stub_group_size_
;
2177 bool whole_sec
= o
->order() == ORDER_INIT
|| o
->order() == ORDER_FINI
;
2179 uint64_t start_addr
= o
->address();
2182 // .init and .fini sections are pasted together to form a single
2183 // function. We can't be adding stubs in the middle of the function.
2184 this_size
= o
->data_size();
2187 start_addr
+= i
->relobj()->output_section_offset(i
->shndx());
2188 this_size
= i
->data_size();
2190 uint64_t end_addr
= start_addr
+ this_size
;
2191 bool toobig
= this_size
> group_size
;
2193 if (toobig
&& !this->suppress_size_errors_
)
2194 gold_warning(_("%s:%s exceeds group size"),
2195 i
->relobj()->name().c_str(),
2196 i
->relobj()->section_name(i
->shndx()).c_str());
2198 if (this->state_
!= HAS_STUB_SECTION
2199 && (!whole_sec
|| this->output_section_
!= o
))
2202 this->output_section_
= o
;
2205 if (this->state_
== NO_GROUP
)
2207 this->state_
= FINDING_STUB_SECTION
;
2208 this->group_end_addr_
= end_addr
;
2210 else if (this->group_end_addr_
- start_addr
< group_size
)
2212 // Adding this section would make the group larger than GROUP_SIZE.
2213 else if (this->state_
== FINDING_STUB_SECTION
2214 && !this->stubs_always_before_branch_
2217 // But wait, there's more! Input sections up to GROUP_SIZE
2218 // bytes before the stub table can be handled by it too.
2219 this->state_
= HAS_STUB_SECTION
;
2220 this->group_end_addr_
= end_addr
;
2224 this->state_
= NO_GROUP
;
2230 // Look over all the input sections, deciding where to place stubs.
2232 template<int size
, bool big_endian
>
2234 Target_powerpc
<size
, big_endian
>::group_sections(Layout
* layout
,
2237 Stub_control
stub_control(parameters
->options().stub_group_size());
2239 // Group input sections and insert stub table
2240 Stub_table
<size
, big_endian
>* stub_table
= NULL
;
2241 Layout::Section_list section_list
;
2242 layout
->get_executable_sections(§ion_list
);
2243 std::stable_sort(section_list
.begin(), section_list
.end(), Sort_sections());
2244 for (Layout::Section_list::reverse_iterator o
= section_list
.rbegin();
2245 o
!= section_list
.rend();
2248 typedef Output_section::Input_section_list Input_section_list
;
2249 for (Input_section_list::const_reverse_iterator i
2250 = (*o
)->input_sections().rbegin();
2251 i
!= (*o
)->input_sections().rend();
2254 if (i
->is_input_section())
2256 Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
2257 <Powerpc_relobj
<size
, big_endian
>*>(i
->relobj());
2258 bool has14
= ppcobj
->has_14bit_branch(i
->shndx());
2259 if (!stub_control
.can_add_to_stub_group(*o
, &*i
, has14
))
2261 stub_table
->init(stub_control
.owner(),
2262 stub_control
.output_section());
2265 if (stub_table
== NULL
)
2266 stub_table
= this->new_stub_table();
2267 ppcobj
->set_stub_table(i
->shndx(), stub_table
);
2271 if (stub_table
!= NULL
)
2272 stub_table
->init(stub_control
.owner(), stub_control
.output_section());
2275 // If this branch needs a plt call stub, or a long branch stub, make one.
2277 template<int size
, bool big_endian
>
2279 Target_powerpc
<size
, big_endian
>::Branch_info::make_stub(
2280 Stub_table
<size
, big_endian
>* stub_table
,
2281 Stub_table
<size
, big_endian
>* ifunc_stub_table
,
2282 Symbol_table
* symtab
) const
2284 Symbol
* sym
= this->object_
->global_symbol(this->r_sym_
);
2285 if (sym
!= NULL
&& sym
->is_forwarder())
2286 sym
= symtab
->resolve_forwards(sym
);
2287 const Sized_symbol
<size
>* gsym
= static_cast<const Sized_symbol
<size
>*>(sym
);
2289 ? use_plt_offset
<size
>(gsym
, Scan::get_reference_flags(this->r_type_
))
2290 : this->object_
->local_has_plt_offset(this->r_sym_
))
2292 if (stub_table
== NULL
)
2293 stub_table
= this->object_
->stub_table(this->shndx_
);
2294 if (stub_table
== NULL
)
2296 // This is a ref from a data section to an ifunc symbol.
2297 stub_table
= ifunc_stub_table
;
2299 gold_assert(stub_table
!= NULL
);
2301 stub_table
->add_plt_call_entry(this->object_
, gsym
,
2302 this->r_type_
, this->addend_
);
2304 stub_table
->add_plt_call_entry(this->object_
, this->r_sym_
,
2305 this->r_type_
, this->addend_
);
2309 unsigned int max_branch_offset
;
2310 if (this->r_type_
== elfcpp::R_POWERPC_REL14
2311 || this->r_type_
== elfcpp::R_POWERPC_REL14_BRTAKEN
2312 || this->r_type_
== elfcpp::R_POWERPC_REL14_BRNTAKEN
)
2313 max_branch_offset
= 1 << 15;
2314 else if (this->r_type_
== elfcpp::R_POWERPC_REL24
2315 || this->r_type_
== elfcpp::R_PPC_PLTREL24
2316 || this->r_type_
== elfcpp::R_PPC_LOCAL24PC
)
2317 max_branch_offset
= 1 << 25;
2320 Address from
= this->object_
->get_output_section_offset(this->shndx_
);
2321 gold_assert(from
!= invalid_address
);
2322 from
+= (this->object_
->output_section(this->shndx_
)->address()
2327 switch (gsym
->source())
2329 case Symbol::FROM_OBJECT
:
2331 Object
* symobj
= gsym
->object();
2332 if (symobj
->is_dynamic()
2333 || symobj
->pluginobj() != NULL
)
2336 unsigned int shndx
= gsym
->shndx(&is_ordinary
);
2337 if (shndx
== elfcpp::SHN_UNDEF
)
2342 case Symbol::IS_UNDEFINED
:
2348 Symbol_table::Compute_final_value_status status
;
2349 to
= symtab
->compute_final_value
<size
>(gsym
, &status
);
2350 if (status
!= Symbol_table::CFVS_OK
)
2355 const Symbol_value
<size
>* psymval
2356 = this->object_
->local_symbol(this->r_sym_
);
2357 Symbol_value
<size
> symval
;
2358 typedef Sized_relobj_file
<size
, big_endian
> ObjType
;
2359 typename
ObjType::Compute_final_local_value_status status
2360 = this->object_
->compute_final_local_value(this->r_sym_
, psymval
,
2362 if (status
!= ObjType::CFLV_OK
2363 || !symval
.has_output_value())
2365 to
= symval
.value(this->object_
, 0);
2367 to
+= this->addend_
;
2368 if (stub_table
== NULL
)
2369 stub_table
= this->object_
->stub_table(this->shndx_
);
2370 gold_assert(stub_table
!= NULL
);
2371 if (size
== 64 && is_branch_reloc(this->r_type_
))
2373 unsigned int dest_shndx
;
2374 to
= stub_table
->targ()->symval_for_branch(symtab
, to
, gsym
,
2378 Address delta
= to
- from
;
2379 if (delta
+ max_branch_offset
>= 2 * max_branch_offset
)
2381 stub_table
->add_long_branch_entry(this->object_
, to
);
2386 // Relaxation hook. This is where we do stub generation.
2388 template<int size
, bool big_endian
>
2390 Target_powerpc
<size
, big_endian
>::do_relax(int pass
,
2391 const Input_objects
*,
2392 Symbol_table
* symtab
,
2396 unsigned int prev_brlt_size
= 0;
2399 bool thread_safe
= parameters
->options().plt_thread_safe();
2400 if (size
== 64 && !parameters
->options().user_set_plt_thread_safe())
2402 static const char* const thread_starter
[] =
2406 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
2408 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
2409 "mq_notify", "create_timer",
2413 "GOMP_parallel_start",
2414 "GOMP_parallel_loop_static_start",
2415 "GOMP_parallel_loop_dynamic_start",
2416 "GOMP_parallel_loop_guided_start",
2417 "GOMP_parallel_loop_runtime_start",
2418 "GOMP_parallel_sections_start",
2421 if (parameters
->options().shared())
2425 for (unsigned int i
= 0;
2426 i
< sizeof(thread_starter
) / sizeof(thread_starter
[0]);
2429 Symbol
* sym
= symtab
->lookup(thread_starter
[i
], NULL
);
2430 thread_safe
= (sym
!= NULL
2432 && sym
->in_real_elf());
2438 this->plt_thread_safe_
= thread_safe
;
2439 this->group_sections(layout
, task
);
2442 // We need address of stub tables valid for make_stub.
2443 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
2444 p
!= this->stub_tables_
.end();
2447 const Powerpc_relobj
<size
, big_endian
>* object
2448 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>((*p
)->relobj());
2449 Address off
= object
->get_output_section_offset((*p
)->shndx());
2450 gold_assert(off
!= invalid_address
);
2451 Output_section
* os
= (*p
)->output_section();
2452 (*p
)->set_address_and_size(os
, off
);
2457 // Clear plt call stubs, long branch stubs and branch lookup table.
2458 prev_brlt_size
= this->branch_lookup_table_
.size();
2459 this->branch_lookup_table_
.clear();
2460 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
2461 p
!= this->stub_tables_
.end();
2464 (*p
)->clear_stubs();
2468 // Build all the stubs.
2469 Stub_table
<size
, big_endian
>* ifunc_stub_table
2470 = this->stub_tables_
.size() == 0 ? NULL
: this->stub_tables_
[0];
2471 Stub_table
<size
, big_endian
>* one_stub_table
2472 = this->stub_tables_
.size() != 1 ? NULL
: ifunc_stub_table
;
2473 for (typename
Branches::const_iterator b
= this->branch_info_
.begin();
2474 b
!= this->branch_info_
.end();
2477 b
->make_stub(one_stub_table
, ifunc_stub_table
, symtab
);
2480 // Did anything change size?
2481 unsigned int num_huge_branches
= this->branch_lookup_table_
.size();
2482 bool again
= num_huge_branches
!= prev_brlt_size
;
2483 if (size
== 64 && num_huge_branches
!= 0)
2484 this->make_brlt_section(layout
);
2485 if (size
== 64 && again
)
2486 this->brlt_section_
->set_current_size(num_huge_branches
);
2488 typedef Unordered_set
<Output_section
*> Output_sections
;
2489 Output_sections os_need_update
;
2490 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
2491 p
!= this->stub_tables_
.end();
2494 if ((*p
)->size_update())
2497 (*p
)->add_eh_frame(layout
);
2498 os_need_update
.insert((*p
)->output_section());
2502 // Set output section offsets for all input sections in an output
2503 // section that just changed size. Anything past the stubs will
2505 for (typename
Output_sections::iterator p
= os_need_update
.begin();
2506 p
!= os_need_update
.end();
2509 Output_section
* os
= *p
;
2511 typedef Output_section::Input_section_list Input_section_list
;
2512 for (Input_section_list::const_iterator i
= os
->input_sections().begin();
2513 i
!= os
->input_sections().end();
2516 off
= align_address(off
, i
->addralign());
2517 if (i
->is_input_section() || i
->is_relaxed_input_section())
2518 i
->relobj()->set_section_offset(i
->shndx(), off
);
2519 if (i
->is_relaxed_input_section())
2521 Stub_table
<size
, big_endian
>* stub_table
2522 = static_cast<Stub_table
<size
, big_endian
>*>(
2523 i
->relaxed_input_section());
2524 off
+= stub_table
->set_address_and_size(os
, off
);
2527 off
+= i
->data_size();
2529 // If .brlt is part of this output section, then we have just
2530 // done the offset adjustment.
2531 os
->clear_section_offsets_need_adjustment();
2536 && num_huge_branches
!= 0
2537 && parameters
->options().output_is_position_independent())
2539 // Fill in the BRLT relocs.
2540 this->brlt_section_
->reset_data_size();
2541 for (typename
Branch_lookup_table::const_iterator p
2542 = this->branch_lookup_table_
.begin();
2543 p
!= this->branch_lookup_table_
.end();
2546 this->brlt_section_
->add_reloc(p
->first
, p
->second
);
2548 this->brlt_section_
->finalize_data_size();
2553 template<int size
, bool big_endian
>
2555 Target_powerpc
<size
, big_endian
>::do_plt_fde_location(const Output_data
* plt
,
2556 unsigned char* oview
,
2560 uint64_t address
= plt
->address();
2561 off_t len
= plt
->data_size();
2563 if (plt
== this->glink_
)
2565 // See Output_data_glink::do_write() for glink contents.
2568 // There is one word before __glink_PLTresolve
2572 else if (parameters
->options().output_is_position_independent())
2574 // There are two FDEs for a position independent glink.
2575 // The first covers the branch table, the second
2576 // __glink_PLTresolve at the end of glink.
2577 off_t resolve_size
= this->glink_
->pltresolve_size
;
2579 len
-= resolve_size
;
2582 address
+= len
- resolve_size
;
2589 // Must be a stub table.
2590 const Stub_table
<size
, big_endian
>* stub_table
2591 = static_cast<const Stub_table
<size
, big_endian
>*>(plt
);
2592 uint64_t stub_address
= stub_table
->stub_address();
2593 len
-= stub_address
- address
;
2594 address
= stub_address
;
2597 *paddress
= address
;
2601 // A class to handle the PLT data.
2603 template<int size
, bool big_endian
>
2604 class Output_data_plt_powerpc
: public Output_section_data_build
2607 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true,
2608 size
, big_endian
> Reloc_section
;
2610 Output_data_plt_powerpc(Target_powerpc
<size
, big_endian
>* targ
,
2611 Reloc_section
* plt_rel
,
2612 unsigned int reserved_size
,
2614 : Output_section_data_build(size
== 32 ? 4 : 8),
2617 initial_plt_entry_size_(reserved_size
),
2621 // Add an entry to the PLT.
2626 add_ifunc_entry(Symbol
*);
2629 add_local_ifunc_entry(Sized_relobj_file
<size
, big_endian
>*, unsigned int);
2631 // Return the .rela.plt section data.
2638 // Return the number of PLT entries.
2642 return ((this->current_data_size() - this->initial_plt_entry_size_
)
2646 // Return the offset of the first non-reserved PLT entry.
2648 first_plt_entry_offset()
2649 { return this->initial_plt_entry_size_
; }
2651 // Return the size of a PLT entry.
2653 get_plt_entry_size()
2654 { return plt_entry_size
; }
2658 do_adjust_output_section(Output_section
* os
)
2663 // Write to a map file.
2665 do_print_to_mapfile(Mapfile
* mapfile
) const
2666 { mapfile
->print_output_data(this, this->name_
); }
2669 // The size of an entry in the PLT.
2670 static const int plt_entry_size
= size
== 32 ? 4 : 24;
2672 // Write out the PLT data.
2674 do_write(Output_file
*);
2676 // The reloc section.
2677 Reloc_section
* rel_
;
2678 // Allows access to .glink for do_write.
2679 Target_powerpc
<size
, big_endian
>* targ_
;
2680 // The size of the first reserved entry.
2681 int initial_plt_entry_size_
;
2682 // What to report in map file.
2686 // Add an entry to the PLT.
2688 template<int size
, bool big_endian
>
2690 Output_data_plt_powerpc
<size
, big_endian
>::add_entry(Symbol
* gsym
)
2692 if (!gsym
->has_plt_offset())
2694 section_size_type off
= this->current_data_size();
2696 off
+= this->first_plt_entry_offset();
2697 gsym
->set_plt_offset(off
);
2698 gsym
->set_needs_dynsym_entry();
2699 unsigned int dynrel
= elfcpp::R_POWERPC_JMP_SLOT
;
2700 this->rel_
->add_global(gsym
, dynrel
, this, off
, 0);
2701 off
+= plt_entry_size
;
2702 this->set_current_data_size(off
);
2706 // Add an entry for a global ifunc symbol that resolves locally, to the IPLT.
2708 template<int size
, bool big_endian
>
2710 Output_data_plt_powerpc
<size
, big_endian
>::add_ifunc_entry(Symbol
* gsym
)
2712 if (!gsym
->has_plt_offset())
2714 section_size_type off
= this->current_data_size();
2715 gsym
->set_plt_offset(off
);
2716 unsigned int dynrel
= elfcpp::R_POWERPC_IRELATIVE
;
2718 dynrel
= elfcpp::R_PPC64_JMP_IREL
;
2719 this->rel_
->add_symbolless_global_addend(gsym
, dynrel
, this, off
, 0);
2720 off
+= plt_entry_size
;
2721 this->set_current_data_size(off
);
2725 // Add an entry for a local ifunc symbol to the IPLT.
2727 template<int size
, bool big_endian
>
2729 Output_data_plt_powerpc
<size
, big_endian
>::add_local_ifunc_entry(
2730 Sized_relobj_file
<size
, big_endian
>* relobj
,
2731 unsigned int local_sym_index
)
2733 if (!relobj
->local_has_plt_offset(local_sym_index
))
2735 section_size_type off
= this->current_data_size();
2736 relobj
->set_local_plt_offset(local_sym_index
, off
);
2737 unsigned int dynrel
= elfcpp::R_POWERPC_IRELATIVE
;
2739 dynrel
= elfcpp::R_PPC64_JMP_IREL
;
2740 this->rel_
->add_symbolless_local_addend(relobj
, local_sym_index
, dynrel
,
2742 off
+= plt_entry_size
;
2743 this->set_current_data_size(off
);
2747 static const uint32_t add_0_11_11
= 0x7c0b5a14;
2748 static const uint32_t add_2_2_11
= 0x7c425a14;
2749 static const uint32_t add_3_3_2
= 0x7c631214;
2750 static const uint32_t add_3_3_13
= 0x7c636a14;
2751 static const uint32_t add_11_0_11
= 0x7d605a14;
2752 static const uint32_t add_12_2_11
= 0x7d825a14;
2753 static const uint32_t add_12_12_11
= 0x7d8c5a14;
2754 static const uint32_t addi_11_11
= 0x396b0000;
2755 static const uint32_t addi_12_12
= 0x398c0000;
2756 static const uint32_t addi_2_2
= 0x38420000;
2757 static const uint32_t addi_3_2
= 0x38620000;
2758 static const uint32_t addi_3_3
= 0x38630000;
2759 static const uint32_t addis_0_2
= 0x3c020000;
2760 static const uint32_t addis_0_13
= 0x3c0d0000;
2761 static const uint32_t addis_11_11
= 0x3d6b0000;
2762 static const uint32_t addis_11_30
= 0x3d7e0000;
2763 static const uint32_t addis_12_12
= 0x3d8c0000;
2764 static const uint32_t addis_12_2
= 0x3d820000;
2765 static const uint32_t addis_3_2
= 0x3c620000;
2766 static const uint32_t addis_3_13
= 0x3c6d0000;
2767 static const uint32_t b
= 0x48000000;
2768 static const uint32_t bcl_20_31
= 0x429f0005;
2769 static const uint32_t bctr
= 0x4e800420;
2770 static const uint32_t blr
= 0x4e800020;
2771 static const uint32_t blrl
= 0x4e800021;
2772 static const uint32_t bnectr_p4
= 0x4ce20420;
2773 static const uint32_t cmpldi_2_0
= 0x28220000;
2774 static const uint32_t cror_15_15_15
= 0x4def7b82;
2775 static const uint32_t cror_31_31_31
= 0x4ffffb82;
2776 static const uint32_t ld_0_1
= 0xe8010000;
2777 static const uint32_t ld_0_12
= 0xe80c0000;
2778 static const uint32_t ld_11_12
= 0xe96c0000;
2779 static const uint32_t ld_11_2
= 0xe9620000;
2780 static const uint32_t ld_2_1
= 0xe8410000;
2781 static const uint32_t ld_2_11
= 0xe84b0000;
2782 static const uint32_t ld_2_12
= 0xe84c0000;
2783 static const uint32_t ld_2_2
= 0xe8420000;
2784 static const uint32_t lfd_0_1
= 0xc8010000;
2785 static const uint32_t li_0_0
= 0x38000000;
2786 static const uint32_t li_12_0
= 0x39800000;
2787 static const uint32_t lis_0_0
= 0x3c000000;
2788 static const uint32_t lis_11
= 0x3d600000;
2789 static const uint32_t lis_12
= 0x3d800000;
2790 static const uint32_t lwz_0_12
= 0x800c0000;
2791 static const uint32_t lwz_11_11
= 0x816b0000;
2792 static const uint32_t lwz_11_30
= 0x817e0000;
2793 static const uint32_t lwz_12_12
= 0x818c0000;
2794 static const uint32_t lwzu_0_12
= 0x840c0000;
2795 static const uint32_t lvx_0_12_0
= 0x7c0c00ce;
2796 static const uint32_t mflr_0
= 0x7c0802a6;
2797 static const uint32_t mflr_11
= 0x7d6802a6;
2798 static const uint32_t mflr_12
= 0x7d8802a6;
2799 static const uint32_t mtctr_0
= 0x7c0903a6;
2800 static const uint32_t mtctr_11
= 0x7d6903a6;
2801 static const uint32_t mtctr_12
= 0x7d8903a6;
2802 static const uint32_t mtlr_0
= 0x7c0803a6;
2803 static const uint32_t mtlr_12
= 0x7d8803a6;
2804 static const uint32_t nop
= 0x60000000;
2805 static const uint32_t ori_0_0_0
= 0x60000000;
2806 static const uint32_t std_0_1
= 0xf8010000;
2807 static const uint32_t std_0_12
= 0xf80c0000;
2808 static const uint32_t std_2_1
= 0xf8410000;
2809 static const uint32_t stfd_0_1
= 0xd8010000;
2810 static const uint32_t stvx_0_12_0
= 0x7c0c01ce;
2811 static const uint32_t sub_11_11_12
= 0x7d6c5850;
2812 static const uint32_t xor_11_11_11
= 0x7d6b5a78;
2814 // Write out the PLT.
2816 template<int size
, bool big_endian
>
2818 Output_data_plt_powerpc
<size
, big_endian
>::do_write(Output_file
* of
)
2822 const section_size_type offset
= this->offset();
2823 const section_size_type oview_size
2824 = convert_to_section_size_type(this->data_size());
2825 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
2826 unsigned char* pov
= oview
;
2827 unsigned char* endpov
= oview
+ oview_size
;
2829 // The address of the .glink branch table
2830 const Output_data_glink
<size
, big_endian
>* glink
2831 = this->targ_
->glink_section();
2832 elfcpp::Elf_types
<32>::Elf_Addr branch_tab
= glink
->address();
2834 while (pov
< endpov
)
2836 elfcpp::Swap
<32, big_endian
>::writeval(pov
, branch_tab
);
2841 of
->write_output_view(offset
, oview_size
, oview
);
2845 // Create the PLT section.
2847 template<int size
, bool big_endian
>
2849 Target_powerpc
<size
, big_endian
>::make_plt_section(Symbol_table
* symtab
,
2852 if (this->plt_
== NULL
)
2854 if (this->got_
== NULL
)
2855 this->got_section(symtab
, layout
);
2857 if (this->glink_
== NULL
)
2858 make_glink_section(layout
);
2860 // Ensure that .rela.dyn always appears before .rela.plt This is
2861 // necessary due to how, on PowerPC and some other targets, .rela.dyn
2862 // needs to include .rela.plt in it's range.
2863 this->rela_dyn_section(layout
);
2865 Reloc_section
* plt_rel
= new Reloc_section(false);
2866 layout
->add_output_section_data(".rela.plt", elfcpp::SHT_RELA
,
2867 elfcpp::SHF_ALLOC
, plt_rel
,
2868 ORDER_DYNAMIC_PLT_RELOCS
, false);
2870 = new Output_data_plt_powerpc
<size
, big_endian
>(this, plt_rel
,
2871 size
== 32 ? 0 : 24,
2873 layout
->add_output_section_data(".plt",
2875 ? elfcpp::SHT_PROGBITS
2876 : elfcpp::SHT_NOBITS
),
2877 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
2886 // Create the IPLT section.
2888 template<int size
, bool big_endian
>
2890 Target_powerpc
<size
, big_endian
>::make_iplt_section(Symbol_table
* symtab
,
2893 if (this->iplt_
== NULL
)
2895 this->make_plt_section(symtab
, layout
);
2897 Reloc_section
* iplt_rel
= new Reloc_section(false);
2898 this->rela_dyn_
->output_section()->add_output_section_data(iplt_rel
);
2900 = new Output_data_plt_powerpc
<size
, big_endian
>(this, iplt_rel
,
2902 this->plt_
->output_section()->add_output_section_data(this->iplt_
);
2906 // A section for huge long branch addresses, similar to plt section.
2908 template<int size
, bool big_endian
>
2909 class Output_data_brlt_powerpc
: public Output_section_data_build
2912 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
2913 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true,
2914 size
, big_endian
> Reloc_section
;
2916 Output_data_brlt_powerpc(Target_powerpc
<size
, big_endian
>* targ
,
2917 Reloc_section
* brlt_rel
)
2918 : Output_section_data_build(size
== 32 ? 4 : 8),
2923 // Add a reloc for an entry in the BRLT.
2925 add_reloc(Address to
, unsigned int off
)
2926 { this->rel_
->add_relative(elfcpp::R_POWERPC_RELATIVE
, this, off
, to
); }
2928 // Update section and reloc section size.
2930 set_current_size(unsigned int num_branches
)
2932 this->reset_address_and_file_offset();
2933 this->set_current_data_size(num_branches
* 16);
2934 this->finalize_data_size();
2935 Output_section
* os
= this->output_section();
2936 os
->set_section_offsets_need_adjustment();
2937 if (this->rel_
!= NULL
)
2939 unsigned int reloc_size
2940 = Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
2941 this->rel_
->reset_address_and_file_offset();
2942 this->rel_
->set_current_data_size(num_branches
* reloc_size
);
2943 this->rel_
->finalize_data_size();
2944 Output_section
* os
= this->rel_
->output_section();
2945 os
->set_section_offsets_need_adjustment();
2951 do_adjust_output_section(Output_section
* os
)
2956 // Write to a map file.
2958 do_print_to_mapfile(Mapfile
* mapfile
) const
2959 { mapfile
->print_output_data(this, "** BRLT"); }
2962 // Write out the BRLT data.
2964 do_write(Output_file
*);
2966 // The reloc section.
2967 Reloc_section
* rel_
;
2968 Target_powerpc
<size
, big_endian
>* targ_
;
2971 // Make the branch lookup table section.
2973 template<int size
, bool big_endian
>
2975 Target_powerpc
<size
, big_endian
>::make_brlt_section(Layout
* layout
)
2977 if (size
== 64 && this->brlt_section_
== NULL
)
2979 Reloc_section
* brlt_rel
= NULL
;
2980 bool is_pic
= parameters
->options().output_is_position_independent();
2983 // When PIC we can't fill in .brlt (like .plt it can be a
2984 // bss style section) but must initialise at runtime via
2985 // dynamic relocats.
2986 this->rela_dyn_section(layout
);
2987 brlt_rel
= new Reloc_section(false);
2988 this->rela_dyn_
->output_section()->add_output_section_data(brlt_rel
);
2991 = new Output_data_brlt_powerpc
<size
, big_endian
>(this, brlt_rel
);
2992 if (this->plt_
&& is_pic
)
2993 this->plt_
->output_section()
2994 ->add_output_section_data(this->brlt_section_
);
2996 layout
->add_output_section_data(".brlt",
2997 (is_pic
? elfcpp::SHT_NOBITS
2998 : elfcpp::SHT_PROGBITS
),
2999 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
3000 this->brlt_section_
,
3001 (is_pic
? ORDER_SMALL_BSS
3002 : ORDER_SMALL_DATA
),
3007 // Write out .brlt when non-PIC.
3009 template<int size
, bool big_endian
>
3011 Output_data_brlt_powerpc
<size
, big_endian
>::do_write(Output_file
* of
)
3013 if (size
== 64 && !parameters
->options().output_is_position_independent())
3015 const section_size_type offset
= this->offset();
3016 const section_size_type oview_size
3017 = convert_to_section_size_type(this->data_size());
3018 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
3020 this->targ_
->write_branch_lookup_table(oview
);
3021 of
->write_output_view(offset
, oview_size
, oview
);
3025 static inline uint32_t
3031 static inline uint32_t
3037 static inline uint32_t
3040 return hi(a
+ 0x8000);
3046 static const unsigned char eh_frame_cie
[12];
3050 const unsigned char Eh_cie
<size
>::eh_frame_cie
[] =
3053 'z', 'R', 0, // Augmentation string.
3054 4, // Code alignment.
3055 0x80 - size
/ 8 , // Data alignment.
3057 1, // Augmentation size.
3058 (elfcpp::DW_EH_PE_pcrel
3059 | elfcpp::DW_EH_PE_sdata4
), // FDE encoding.
3060 elfcpp::DW_CFA_def_cfa
, 1, 0 // def_cfa: r1 offset 0.
3063 // Describe __glink_PLTresolve use of LR, 64-bit version.
3064 static const unsigned char glink_eh_frame_fde_64
[] =
3066 0, 0, 0, 0, // Replaced with offset to .glink.
3067 0, 0, 0, 0, // Replaced with size of .glink.
3068 0, // Augmentation size.
3069 elfcpp::DW_CFA_advance_loc
+ 1,
3070 elfcpp::DW_CFA_register
, 65, 12,
3071 elfcpp::DW_CFA_advance_loc
+ 4,
3072 elfcpp::DW_CFA_restore_extended
, 65
3075 // Describe __glink_PLTresolve use of LR, 32-bit version.
3076 static const unsigned char glink_eh_frame_fde_32
[] =
3078 0, 0, 0, 0, // Replaced with offset to .glink.
3079 0, 0, 0, 0, // Replaced with size of .glink.
3080 0, // Augmentation size.
3081 elfcpp::DW_CFA_advance_loc
+ 2,
3082 elfcpp::DW_CFA_register
, 65, 0,
3083 elfcpp::DW_CFA_advance_loc
+ 4,
3084 elfcpp::DW_CFA_restore_extended
, 65
3087 static const unsigned char default_fde
[] =
3089 0, 0, 0, 0, // Replaced with offset to stubs.
3090 0, 0, 0, 0, // Replaced with size of stubs.
3091 0, // Augmentation size.
3092 elfcpp::DW_CFA_nop
, // Pad.
3097 template<bool big_endian
>
3099 write_insn(unsigned char* p
, uint32_t v
)
3101 elfcpp::Swap
<32, big_endian
>::writeval(p
, v
);
3104 // Stub_table holds information about plt and long branch stubs.
3105 // Stubs are built in an area following some input section determined
3106 // by group_sections(). This input section is converted to a relaxed
3107 // input section allowing it to be resized to accommodate the stubs
3109 template<int size
, bool big_endian
>
3110 class Stub_table
: public Output_relaxed_input_section
3113 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
3114 static const Address invalid_address
= static_cast<Address
>(0) - 1;
3116 Stub_table(Target_powerpc
<size
, big_endian
>* targ
)
3117 : Output_relaxed_input_section(NULL
, 0, 0),
3118 targ_(targ
), plt_call_stubs_(), long_branch_stubs_(),
3119 orig_data_size_(0), plt_size_(0), last_plt_size_(0),
3120 branch_size_(0), last_branch_size_(0), eh_frame_added_(false)
3123 // Delayed Output_relaxed_input_section init.
3125 init(const Output_section::Input_section
*, Output_section
*);
3127 // Add a plt call stub.
3129 add_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3135 add_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3140 // Find a given plt call stub.
3142 find_plt_call_entry(const Symbol
*) const;
3145 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3146 unsigned int) const;
3149 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3155 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3160 // Add a long branch stub.
3162 add_long_branch_entry(const Powerpc_relobj
<size
, big_endian
>*, Address
);
3165 find_long_branch_entry(const Powerpc_relobj
<size
, big_endian
>*,
3171 this->plt_call_stubs_
.clear();
3172 this->plt_size_
= 0;
3173 this->long_branch_stubs_
.clear();
3174 this->branch_size_
= 0;
3178 set_address_and_size(const Output_section
* os
, Address off
)
3180 Address start_off
= off
;
3181 off
+= this->orig_data_size_
;
3182 Address my_size
= this->plt_size_
+ this->branch_size_
;
3184 off
= align_address(off
, this->stub_align());
3185 // Include original section size and alignment padding in size
3186 my_size
+= off
- start_off
;
3187 this->reset_address_and_file_offset();
3188 this->set_current_data_size(my_size
);
3189 this->set_address_and_file_offset(os
->address() + start_off
,
3190 os
->offset() + start_off
);
3195 stub_address() const
3197 return align_address(this->address() + this->orig_data_size_
,
3198 this->stub_align());
3204 return align_address(this->offset() + this->orig_data_size_
,
3205 this->stub_align());
3210 { return this->plt_size_
; }
3215 Output_section
* os
= this->output_section();
3216 if (os
->addralign() < this->stub_align())
3218 os
->set_addralign(this->stub_align());
3219 // FIXME: get rid of the insane checkpointing.
3220 // We can't increase alignment of the input section to which
3221 // stubs are attached; The input section may be .init which
3222 // is pasted together with other .init sections to form a
3223 // function. Aligning might insert zero padding resulting in
3224 // sigill. However we do need to increase alignment of the
3225 // output section so that the align_address() on offset in
3226 // set_address_and_size() adds the same padding as the
3227 // align_address() on address in stub_address().
3228 // What's more, we need this alignment for the layout done in
3229 // relaxation_loop_body() so that the output section starts at
3230 // a suitably aligned address.
3231 os
->checkpoint_set_addralign(this->stub_align());
3233 if (this->last_plt_size_
!= this->plt_size_
3234 || this->last_branch_size_
!= this->branch_size_
)
3236 this->last_plt_size_
= this->plt_size_
;
3237 this->last_branch_size_
= this->branch_size_
;
3243 // Add .eh_frame info for this stub section. Unlike other linker
3244 // generated .eh_frame this is added late in the link, because we
3245 // only want the .eh_frame info if this particular stub section is
3248 add_eh_frame(Layout
* layout
)
3250 if (!this->eh_frame_added_
)
3252 if (!parameters
->options().ld_generated_unwind_info())
3255 // Since we add stub .eh_frame info late, it must be placed
3256 // after all other linker generated .eh_frame info so that
3257 // merge mapping need not be updated for input sections.
3258 // There is no provision to use a different CIE to that used
3260 if (!this->targ_
->has_glink())
3263 layout
->add_eh_frame_for_plt(this,
3264 Eh_cie
<size
>::eh_frame_cie
,
3265 sizeof (Eh_cie
<size
>::eh_frame_cie
),
3267 sizeof (default_fde
));
3268 this->eh_frame_added_
= true;
3272 Target_powerpc
<size
, big_endian
>*
3278 class Plt_stub_ent_hash
;
3279 typedef Unordered_map
<Plt_stub_ent
, unsigned int,
3280 Plt_stub_ent_hash
> Plt_stub_entries
;
3282 // Alignment of stub section.
3288 unsigned int min_align
= 32;
3289 unsigned int user_align
= 1 << parameters
->options().plt_align();
3290 return std::max(user_align
, min_align
);
3293 // Return the plt offset for the given call stub.
3295 plt_off(typename
Plt_stub_entries::const_iterator p
, bool* is_iplt
) const
3297 const Symbol
* gsym
= p
->first
.sym_
;
3300 *is_iplt
= (gsym
->type() == elfcpp::STT_GNU_IFUNC
3301 && gsym
->can_use_relative_reloc(false));
3302 return gsym
->plt_offset();
3307 const Sized_relobj_file
<size
, big_endian
>* relobj
= p
->first
.object_
;
3308 unsigned int local_sym_index
= p
->first
.locsym_
;
3309 return relobj
->local_plt_offset(local_sym_index
);
3313 // Size of a given plt call stub.
3315 plt_call_size(typename
Plt_stub_entries::const_iterator p
) const
3321 Address plt_addr
= this->plt_off(p
, &is_iplt
);
3323 plt_addr
+= this->targ_
->iplt_section()->address();
3325 plt_addr
+= this->targ_
->plt_section()->address();
3326 Address got_addr
= this->targ_
->got_section()->output_section()->address();
3327 const Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
3328 <const Powerpc_relobj
<size
, big_endian
>*>(p
->first
.object_
);
3329 got_addr
+= ppcobj
->toc_base_offset();
3330 Address off
= plt_addr
- got_addr
;
3331 bool static_chain
= parameters
->options().plt_static_chain();
3332 bool thread_safe
= this->targ_
->plt_thread_safe();
3333 unsigned int bytes
= (4 * 5
3336 + 4 * (ha(off
) != 0)
3337 + 4 * (ha(off
+ 8 + 8 * static_chain
) != ha(off
)));
3338 unsigned int align
= 1 << parameters
->options().plt_align();
3340 bytes
= (bytes
+ align
- 1) & -align
;
3344 // Return long branch stub size.
3346 branch_stub_size(Address to
)
3349 = this->stub_address() + this->last_plt_size_
+ this->branch_size_
;
3350 if (to
- loc
+ (1 << 25) < 2 << 25)
3352 if (size
== 64 || !parameters
->options().output_is_position_independent())
3359 do_write(Output_file
*);
3361 // Plt call stub keys.
3365 Plt_stub_ent(const Symbol
* sym
)
3366 : sym_(sym
), object_(0), addend_(0), locsym_(0)
3369 Plt_stub_ent(const Sized_relobj_file
<size
, big_endian
>* object
,
3370 unsigned int locsym_index
)
3371 : sym_(NULL
), object_(object
), addend_(0), locsym_(locsym_index
)
3374 Plt_stub_ent(const Sized_relobj_file
<size
, big_endian
>* object
,
3376 unsigned int r_type
,
3378 : sym_(sym
), object_(0), addend_(0), locsym_(0)
3381 this->addend_
= addend
;
3382 else if (parameters
->options().output_is_position_independent()
3383 && r_type
== elfcpp::R_PPC_PLTREL24
)
3385 this->addend_
= addend
;
3386 if (this->addend_
>= 32768)
3387 this->object_
= object
;
3391 Plt_stub_ent(const Sized_relobj_file
<size
, big_endian
>* object
,
3392 unsigned int locsym_index
,
3393 unsigned int r_type
,
3395 : sym_(NULL
), object_(object
), addend_(0), locsym_(locsym_index
)
3398 this->addend_
= addend
;
3399 else if (parameters
->options().output_is_position_independent()
3400 && r_type
== elfcpp::R_PPC_PLTREL24
)
3401 this->addend_
= addend
;
3404 bool operator==(const Plt_stub_ent
& that
) const
3406 return (this->sym_
== that
.sym_
3407 && this->object_
== that
.object_
3408 && this->addend_
== that
.addend_
3409 && this->locsym_
== that
.locsym_
);
3413 const Sized_relobj_file
<size
, big_endian
>* object_
;
3414 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend_
;
3415 unsigned int locsym_
;
3418 class Plt_stub_ent_hash
3421 size_t operator()(const Plt_stub_ent
& ent
) const
3423 return (reinterpret_cast<uintptr_t>(ent
.sym_
)
3424 ^ reinterpret_cast<uintptr_t>(ent
.object_
)
3430 // Long branch stub keys.
3431 class Branch_stub_ent
3434 Branch_stub_ent(const Powerpc_relobj
<size
, big_endian
>* obj
, Address to
)
3435 : dest_(to
), toc_base_off_(0)
3438 toc_base_off_
= obj
->toc_base_offset();
3441 bool operator==(const Branch_stub_ent
& that
) const
3443 return (this->dest_
== that
.dest_
3445 || this->toc_base_off_
== that
.toc_base_off_
));
3449 unsigned int toc_base_off_
;
3452 class Branch_stub_ent_hash
3455 size_t operator()(const Branch_stub_ent
& ent
) const
3456 { return ent
.dest_
^ ent
.toc_base_off_
; }
3459 // In a sane world this would be a global.
3460 Target_powerpc
<size
, big_endian
>* targ_
;
3461 // Map sym/object/addend to stub offset.
3462 Plt_stub_entries plt_call_stubs_
;
3463 // Map destination address to stub offset.
3464 typedef Unordered_map
<Branch_stub_ent
, unsigned int,
3465 Branch_stub_ent_hash
> Branch_stub_entries
;
3466 Branch_stub_entries long_branch_stubs_
;
3467 // size of input section
3468 section_size_type orig_data_size_
;
3470 section_size_type plt_size_
, last_plt_size_
, branch_size_
, last_branch_size_
;
3471 // Whether .eh_frame info has been created for this stub section.
3472 bool eh_frame_added_
;
3475 // Make a new stub table, and record.
3477 template<int size
, bool big_endian
>
3478 Stub_table
<size
, big_endian
>*
3479 Target_powerpc
<size
, big_endian
>::new_stub_table()
3481 Stub_table
<size
, big_endian
>* stub_table
3482 = new Stub_table
<size
, big_endian
>(this);
3483 this->stub_tables_
.push_back(stub_table
);
3487 // Delayed stub table initialisation, because we create the stub table
3488 // before we know to which section it will be attached.
3490 template<int size
, bool big_endian
>
3492 Stub_table
<size
, big_endian
>::init(
3493 const Output_section::Input_section
* owner
,
3494 Output_section
* output_section
)
3496 this->set_relobj(owner
->relobj());
3497 this->set_shndx(owner
->shndx());
3498 this->set_addralign(this->relobj()->section_addralign(this->shndx()));
3499 this->set_output_section(output_section
);
3500 this->orig_data_size_
= owner
->current_data_size();
3502 std::vector
<Output_relaxed_input_section
*> new_relaxed
;
3503 new_relaxed
.push_back(this);
3504 output_section
->convert_input_sections_to_relaxed_sections(new_relaxed
);
3507 // Add a plt call stub, if we do not already have one for this
3508 // sym/object/addend combo.
3510 template<int size
, bool big_endian
>
3512 Stub_table
<size
, big_endian
>::add_plt_call_entry(
3513 const Sized_relobj_file
<size
, big_endian
>* object
,
3515 unsigned int r_type
,
3518 Plt_stub_ent
ent(object
, gsym
, r_type
, addend
);
3519 Address off
= this->plt_size_
;
3520 std::pair
<typename
Plt_stub_entries::iterator
, bool> p
3521 = this->plt_call_stubs_
.insert(std::make_pair(ent
, off
));
3523 this->plt_size_
= off
+ this->plt_call_size(p
.first
);
3526 template<int size
, bool big_endian
>
3528 Stub_table
<size
, big_endian
>::add_plt_call_entry(
3529 const Sized_relobj_file
<size
, big_endian
>* object
,
3530 unsigned int locsym_index
,
3531 unsigned int r_type
,
3534 Plt_stub_ent
ent(object
, locsym_index
, r_type
, addend
);
3535 Address off
= this->plt_size_
;
3536 std::pair
<typename
Plt_stub_entries::iterator
, bool> p
3537 = this->plt_call_stubs_
.insert(std::make_pair(ent
, off
));
3539 this->plt_size_
= off
+ this->plt_call_size(p
.first
);
3542 // Find a plt call stub.
3544 template<int size
, bool big_endian
>
3545 typename Stub_table
<size
, big_endian
>::Address
3546 Stub_table
<size
, big_endian
>::find_plt_call_entry(
3547 const Sized_relobj_file
<size
, big_endian
>* object
,
3549 unsigned int r_type
,
3550 Address addend
) const
3552 Plt_stub_ent
ent(object
, gsym
, r_type
, addend
);
3553 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
3554 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
3557 template<int size
, bool big_endian
>
3558 typename Stub_table
<size
, big_endian
>::Address
3559 Stub_table
<size
, big_endian
>::find_plt_call_entry(const Symbol
* gsym
) const
3561 Plt_stub_ent
ent(gsym
);
3562 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
3563 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
3566 template<int size
, bool big_endian
>
3567 typename Stub_table
<size
, big_endian
>::Address
3568 Stub_table
<size
, big_endian
>::find_plt_call_entry(
3569 const Sized_relobj_file
<size
, big_endian
>* object
,
3570 unsigned int locsym_index
,
3571 unsigned int r_type
,
3572 Address addend
) const
3574 Plt_stub_ent
ent(object
, locsym_index
, r_type
, addend
);
3575 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
3576 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
3579 template<int size
, bool big_endian
>
3580 typename Stub_table
<size
, big_endian
>::Address
3581 Stub_table
<size
, big_endian
>::find_plt_call_entry(
3582 const Sized_relobj_file
<size
, big_endian
>* object
,
3583 unsigned int locsym_index
) const
3585 Plt_stub_ent
ent(object
, locsym_index
);
3586 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
3587 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
3590 // Add a long branch stub if we don't already have one to given
3593 template<int size
, bool big_endian
>
3595 Stub_table
<size
, big_endian
>::add_long_branch_entry(
3596 const Powerpc_relobj
<size
, big_endian
>* object
,
3599 Branch_stub_ent
ent(object
, to
);
3600 Address off
= this->branch_size_
;
3601 if (this->long_branch_stubs_
.insert(std::make_pair(ent
, off
)).second
)
3603 unsigned int stub_size
= this->branch_stub_size(to
);
3604 this->branch_size_
= off
+ stub_size
;
3605 if (size
== 64 && stub_size
!= 4)
3606 this->targ_
->add_branch_lookup_table(to
);
3610 // Find long branch stub.
3612 template<int size
, bool big_endian
>
3613 typename Stub_table
<size
, big_endian
>::Address
3614 Stub_table
<size
, big_endian
>::find_long_branch_entry(
3615 const Powerpc_relobj
<size
, big_endian
>* object
,
3618 Branch_stub_ent
ent(object
, to
);
3619 typename
Branch_stub_entries::const_iterator p
3620 = this->long_branch_stubs_
.find(ent
);
3621 return p
== this->long_branch_stubs_
.end() ? invalid_address
: p
->second
;
3624 // A class to handle .glink.
3626 template<int size
, bool big_endian
>
3627 class Output_data_glink
: public Output_section_data
3630 static const int pltresolve_size
= 16*4;
3632 Output_data_glink(Target_powerpc
<size
, big_endian
>* targ
)
3633 : Output_section_data(16), targ_(targ
)
3637 add_eh_frame(Layout
* layout
)
3639 if (!parameters
->options().ld_generated_unwind_info())
3643 layout
->add_eh_frame_for_plt(this,
3644 Eh_cie
<64>::eh_frame_cie
,
3645 sizeof (Eh_cie
<64>::eh_frame_cie
),
3646 glink_eh_frame_fde_64
,
3647 sizeof (glink_eh_frame_fde_64
));
3650 // 32-bit .glink can use the default since the CIE return
3651 // address reg, LR, is valid.
3652 layout
->add_eh_frame_for_plt(this,
3653 Eh_cie
<32>::eh_frame_cie
,
3654 sizeof (Eh_cie
<32>::eh_frame_cie
),
3656 sizeof (default_fde
));
3657 // Except where LR is used in a PIC __glink_PLTresolve.
3658 if (parameters
->options().output_is_position_independent())
3659 layout
->add_eh_frame_for_plt(this,
3660 Eh_cie
<32>::eh_frame_cie
,
3661 sizeof (Eh_cie
<32>::eh_frame_cie
),
3662 glink_eh_frame_fde_32
,
3663 sizeof (glink_eh_frame_fde_32
));
3668 // Write to a map file.
3670 do_print_to_mapfile(Mapfile
* mapfile
) const
3671 { mapfile
->print_output_data(this, _("** glink")); }
3675 set_final_data_size();
3679 do_write(Output_file
*);
3681 // Allows access to .got and .plt for do_write.
3682 Target_powerpc
<size
, big_endian
>* targ_
;
3685 template<int size
, bool big_endian
>
3687 Output_data_glink
<size
, big_endian
>::set_final_data_size()
3689 unsigned int count
= this->targ_
->plt_entry_count();
3690 section_size_type total
= 0;
3696 // space for branch table
3697 total
+= 4 * (count
- 1);
3699 total
+= -total
& 15;
3700 total
+= this->pltresolve_size
;
3704 total
+= this->pltresolve_size
;
3706 // space for branch table
3709 total
+= 4 * (count
- 0x8000);
3713 this->set_data_size(total
);
3716 // Write out plt and long branch stub code.
3718 template<int size
, bool big_endian
>
3720 Stub_table
<size
, big_endian
>::do_write(Output_file
* of
)
3722 if (this->plt_call_stubs_
.empty()
3723 && this->long_branch_stubs_
.empty())
3726 const section_size_type start_off
= this->offset();
3727 const section_size_type off
= this->stub_offset();
3728 const section_size_type oview_size
=
3729 convert_to_section_size_type(this->data_size() - (off
- start_off
));
3730 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
3735 const Output_data_got_powerpc
<size
, big_endian
>* got
3736 = this->targ_
->got_section();
3737 Address got_os_addr
= got
->output_section()->address();
3739 if (!this->plt_call_stubs_
.empty())
3741 // The base address of the .plt section.
3742 Address plt_base
= this->targ_
->plt_section()->address();
3743 Address iplt_base
= invalid_address
;
3745 // Write out plt call stubs.
3746 typename
Plt_stub_entries::const_iterator cs
;
3747 for (cs
= this->plt_call_stubs_
.begin();
3748 cs
!= this->plt_call_stubs_
.end();
3752 Address pltoff
= this->plt_off(cs
, &is_iplt
);
3753 Address plt_addr
= pltoff
;
3756 if (iplt_base
== invalid_address
)
3757 iplt_base
= this->targ_
->iplt_section()->address();
3758 plt_addr
+= iplt_base
;
3761 plt_addr
+= plt_base
;
3762 const Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
3763 <const Powerpc_relobj
<size
, big_endian
>*>(cs
->first
.object_
);
3764 Address got_addr
= got_os_addr
+ ppcobj
->toc_base_offset();
3765 Address off
= plt_addr
- got_addr
;
3767 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
3768 gold_error(_("%s: linkage table error against `%s'"),
3769 cs
->first
.object_
->name().c_str(),
3770 cs
->first
.sym_
->demangled_name().c_str());
3772 bool static_chain
= parameters
->options().plt_static_chain();
3773 bool thread_safe
= this->targ_
->plt_thread_safe();
3774 bool use_fake_dep
= false;
3775 Address cmp_branch_off
= 0;
3778 unsigned int pltindex
3779 = ((pltoff
- this->targ_
->first_plt_entry_offset())
3780 / this->targ_
->plt_entry_size());
3782 = (this->targ_
->glink_section()->pltresolve_size
3784 if (pltindex
> 32768)
3785 glinkoff
+= (pltindex
- 32768) * 4;
3787 = this->targ_
->glink_section()->address() + glinkoff
;
3789 = (this->stub_address() + cs
->second
+ 24
3790 + 4 * (ha(off
) != 0)
3791 + 4 * (ha(off
+ 8 + 8 * static_chain
) != ha(off
))
3792 + 4 * static_chain
);
3793 cmp_branch_off
= to
- from
;
3794 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
3797 p
= oview
+ cs
->second
;
3800 write_insn
<big_endian
>(p
, std_2_1
+ 40), p
+= 4;
3801 write_insn
<big_endian
>(p
, addis_12_2
+ ha(off
)), p
+= 4;
3802 write_insn
<big_endian
>(p
, ld_11_12
+ l(off
)), p
+= 4;
3803 if (ha(off
+ 8 + 8 * static_chain
) != ha(off
))
3805 write_insn
<big_endian
>(p
, addi_12_12
+ l(off
)), p
+= 4;
3808 write_insn
<big_endian
>(p
, mtctr_11
), p
+= 4;
3811 write_insn
<big_endian
>(p
, xor_11_11_11
), p
+= 4;
3812 write_insn
<big_endian
>(p
, add_12_12_11
), p
+= 4;
3814 write_insn
<big_endian
>(p
, ld_2_12
+ l(off
+ 8)), p
+= 4;
3816 write_insn
<big_endian
>(p
, ld_11_12
+ l(off
+ 16)), p
+= 4;
3820 write_insn
<big_endian
>(p
, std_2_1
+ 40), p
+= 4;
3821 write_insn
<big_endian
>(p
, ld_11_2
+ l(off
)), p
+= 4;
3822 if (ha(off
+ 8 + 8 * static_chain
) != ha(off
))
3824 write_insn
<big_endian
>(p
, addi_2_2
+ l(off
)), p
+= 4;
3827 write_insn
<big_endian
>(p
, mtctr_11
), p
+= 4;
3830 write_insn
<big_endian
>(p
, xor_11_11_11
), p
+= 4;
3831 write_insn
<big_endian
>(p
, add_2_2_11
), p
+= 4;
3834 write_insn
<big_endian
>(p
, ld_11_2
+ l(off
+ 16)), p
+= 4;
3835 write_insn
<big_endian
>(p
, ld_2_2
+ l(off
+ 8)), p
+= 4;
3837 if (thread_safe
&& !use_fake_dep
)
3839 write_insn
<big_endian
>(p
, cmpldi_2_0
), p
+= 4;
3840 write_insn
<big_endian
>(p
, bnectr_p4
), p
+= 4;
3841 write_insn
<big_endian
>(p
, b
| (cmp_branch_off
& 0x3fffffc));
3844 write_insn
<big_endian
>(p
, bctr
);
3848 // Write out long branch stubs.
3849 typename
Branch_stub_entries::const_iterator bs
;
3850 for (bs
= this->long_branch_stubs_
.begin();
3851 bs
!= this->long_branch_stubs_
.end();
3854 p
= oview
+ this->plt_size_
+ bs
->second
;
3855 Address loc
= this->stub_address() + this->plt_size_
+ bs
->second
;
3856 Address delta
= bs
->first
.dest_
- loc
;
3857 if (delta
+ (1 << 25) < 2 << 25)
3858 write_insn
<big_endian
>(p
, b
| (delta
& 0x3fffffc));
3862 = this->targ_
->find_branch_lookup_table(bs
->first
.dest_
);
3863 gold_assert(brlt_addr
!= invalid_address
);
3864 brlt_addr
+= this->targ_
->brlt_section()->address();
3865 Address got_addr
= got_os_addr
+ bs
->first
.toc_base_off_
;
3866 Address brltoff
= brlt_addr
- got_addr
;
3867 if (ha(brltoff
) == 0)
3869 write_insn
<big_endian
>(p
, ld_11_2
+ l(brltoff
)), p
+= 4;
3873 write_insn
<big_endian
>(p
, addis_12_2
+ ha(brltoff
)), p
+= 4;
3874 write_insn
<big_endian
>(p
, ld_11_12
+ l(brltoff
)), p
+= 4;
3876 write_insn
<big_endian
>(p
, mtctr_11
), p
+= 4;
3877 write_insn
<big_endian
>(p
, bctr
);
3883 if (!this->plt_call_stubs_
.empty())
3885 // The base address of the .plt section.
3886 Address plt_base
= this->targ_
->plt_section()->address();
3887 Address iplt_base
= invalid_address
;
3888 // The address of _GLOBAL_OFFSET_TABLE_.
3889 Address g_o_t
= invalid_address
;
3891 // Write out plt call stubs.
3892 typename
Plt_stub_entries::const_iterator cs
;
3893 for (cs
= this->plt_call_stubs_
.begin();
3894 cs
!= this->plt_call_stubs_
.end();
3898 Address plt_addr
= this->plt_off(cs
, &is_iplt
);
3901 if (iplt_base
== invalid_address
)
3902 iplt_base
= this->targ_
->iplt_section()->address();
3903 plt_addr
+= iplt_base
;
3906 plt_addr
+= plt_base
;
3908 p
= oview
+ cs
->second
;
3909 if (parameters
->options().output_is_position_independent())
3912 const Powerpc_relobj
<size
, big_endian
>* ppcobj
3913 = (static_cast<const Powerpc_relobj
<size
, big_endian
>*>
3914 (cs
->first
.object_
));
3915 if (ppcobj
!= NULL
&& cs
->first
.addend_
>= 32768)
3917 unsigned int got2
= ppcobj
->got2_shndx();
3918 got_addr
= ppcobj
->get_output_section_offset(got2
);
3919 gold_assert(got_addr
!= invalid_address
);
3920 got_addr
+= (ppcobj
->output_section(got2
)->address()
3921 + cs
->first
.addend_
);
3925 if (g_o_t
== invalid_address
)
3927 const Output_data_got_powerpc
<size
, big_endian
>* got
3928 = this->targ_
->got_section();
3929 g_o_t
= got
->address() + got
->g_o_t();
3934 Address off
= plt_addr
- got_addr
;
3937 write_insn
<big_endian
>(p
+ 0, lwz_11_30
+ l(off
));
3938 write_insn
<big_endian
>(p
+ 4, mtctr_11
);
3939 write_insn
<big_endian
>(p
+ 8, bctr
);
3943 write_insn
<big_endian
>(p
+ 0, addis_11_30
+ ha(off
));
3944 write_insn
<big_endian
>(p
+ 4, lwz_11_11
+ l(off
));
3945 write_insn
<big_endian
>(p
+ 8, mtctr_11
);
3946 write_insn
<big_endian
>(p
+ 12, bctr
);
3951 write_insn
<big_endian
>(p
+ 0, lis_11
+ ha(plt_addr
));
3952 write_insn
<big_endian
>(p
+ 4, lwz_11_11
+ l(plt_addr
));
3953 write_insn
<big_endian
>(p
+ 8, mtctr_11
);
3954 write_insn
<big_endian
>(p
+ 12, bctr
);
3959 // Write out long branch stubs.
3960 typename
Branch_stub_entries::const_iterator bs
;
3961 for (bs
= this->long_branch_stubs_
.begin();
3962 bs
!= this->long_branch_stubs_
.end();
3965 p
= oview
+ this->plt_size_
+ bs
->second
;
3966 Address loc
= this->stub_address() + this->plt_size_
+ bs
->second
;
3967 Address delta
= bs
->first
.dest_
- loc
;
3968 if (delta
+ (1 << 25) < 2 << 25)
3969 write_insn
<big_endian
>(p
, b
| (delta
& 0x3fffffc));
3970 else if (!parameters
->options().output_is_position_independent())
3972 write_insn
<big_endian
>(p
+ 0, lis_12
+ ha(bs
->first
.dest_
));
3973 write_insn
<big_endian
>(p
+ 4, addi_12_12
+ l(bs
->first
.dest_
));
3974 write_insn
<big_endian
>(p
+ 8, mtctr_12
);
3975 write_insn
<big_endian
>(p
+ 12, bctr
);
3980 write_insn
<big_endian
>(p
+ 0, mflr_0
);
3981 write_insn
<big_endian
>(p
+ 4, bcl_20_31
);
3982 write_insn
<big_endian
>(p
+ 8, mflr_12
);
3983 write_insn
<big_endian
>(p
+ 12, addis_12_12
+ ha(delta
));
3984 write_insn
<big_endian
>(p
+ 16, addi_12_12
+ l(delta
));
3985 write_insn
<big_endian
>(p
+ 20, mtlr_0
);
3986 write_insn
<big_endian
>(p
+ 24, mtctr_12
);
3987 write_insn
<big_endian
>(p
+ 28, bctr
);
3993 // Write out .glink.
3995 template<int size
, bool big_endian
>
3997 Output_data_glink
<size
, big_endian
>::do_write(Output_file
* of
)
3999 const section_size_type off
= this->offset();
4000 const section_size_type oview_size
=
4001 convert_to_section_size_type(this->data_size());
4002 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
4005 // The base address of the .plt section.
4006 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
4007 Address plt_base
= this->targ_
->plt_section()->address();
4011 // Write pltresolve stub.
4013 Address after_bcl
= this->address() + 16;
4014 Address pltoff
= plt_base
- after_bcl
;
4016 elfcpp::Swap
<64, big_endian
>::writeval(p
, pltoff
), p
+= 8;
4018 write_insn
<big_endian
>(p
, mflr_12
), p
+= 4;
4019 write_insn
<big_endian
>(p
, bcl_20_31
), p
+= 4;
4020 write_insn
<big_endian
>(p
, mflr_11
), p
+= 4;
4021 write_insn
<big_endian
>(p
, ld_2_11
+ l(-16)), p
+= 4;
4022 write_insn
<big_endian
>(p
, mtlr_12
), p
+= 4;
4023 write_insn
<big_endian
>(p
, add_12_2_11
), p
+= 4;
4024 write_insn
<big_endian
>(p
, ld_11_12
+ 0), p
+= 4;
4025 write_insn
<big_endian
>(p
, ld_2_12
+ 8), p
+= 4;
4026 write_insn
<big_endian
>(p
, mtctr_11
), p
+= 4;
4027 write_insn
<big_endian
>(p
, ld_11_12
+ 16), p
+= 4;
4028 write_insn
<big_endian
>(p
, bctr
), p
+= 4;
4029 while (p
< oview
+ this->pltresolve_size
)
4030 write_insn
<big_endian
>(p
, nop
), p
+= 4;
4032 // Write lazy link call stubs.
4034 while (p
< oview
+ oview_size
)
4038 write_insn
<big_endian
>(p
, li_0_0
+ indx
), p
+= 4;
4042 write_insn
<big_endian
>(p
, lis_0_0
+ hi(indx
)), p
+= 4;
4043 write_insn
<big_endian
>(p
, ori_0_0_0
+ l(indx
)), p
+= 4;
4045 uint32_t branch_off
= 8 - (p
- oview
);
4046 write_insn
<big_endian
>(p
, b
+ (branch_off
& 0x3fffffc)), p
+= 4;
4052 const Output_data_got_powerpc
<size
, big_endian
>* got
4053 = this->targ_
->got_section();
4054 // The address of _GLOBAL_OFFSET_TABLE_.
4055 Address g_o_t
= got
->address() + got
->g_o_t();
4057 // Write out pltresolve branch table.
4059 unsigned int the_end
= oview_size
- this->pltresolve_size
;
4060 unsigned char* end_p
= oview
+ the_end
;
4061 while (p
< end_p
- 8 * 4)
4062 write_insn
<big_endian
>(p
, b
+ end_p
- p
), p
+= 4;
4064 write_insn
<big_endian
>(p
, nop
), p
+= 4;
4066 // Write out pltresolve call stub.
4067 if (parameters
->options().output_is_position_independent())
4069 Address res0_off
= 0;
4070 Address after_bcl_off
= the_end
+ 12;
4071 Address bcl_res0
= after_bcl_off
- res0_off
;
4073 write_insn
<big_endian
>(p
+ 0, addis_11_11
+ ha(bcl_res0
));
4074 write_insn
<big_endian
>(p
+ 4, mflr_0
);
4075 write_insn
<big_endian
>(p
+ 8, bcl_20_31
);
4076 write_insn
<big_endian
>(p
+ 12, addi_11_11
+ l(bcl_res0
));
4077 write_insn
<big_endian
>(p
+ 16, mflr_12
);
4078 write_insn
<big_endian
>(p
+ 20, mtlr_0
);
4079 write_insn
<big_endian
>(p
+ 24, sub_11_11_12
);
4081 Address got_bcl
= g_o_t
+ 4 - (after_bcl_off
+ this->address());
4083 write_insn
<big_endian
>(p
+ 28, addis_12_12
+ ha(got_bcl
));
4084 if (ha(got_bcl
) == ha(got_bcl
+ 4))
4086 write_insn
<big_endian
>(p
+ 32, lwz_0_12
+ l(got_bcl
));
4087 write_insn
<big_endian
>(p
+ 36, lwz_12_12
+ l(got_bcl
+ 4));
4091 write_insn
<big_endian
>(p
+ 32, lwzu_0_12
+ l(got_bcl
));
4092 write_insn
<big_endian
>(p
+ 36, lwz_12_12
+ 4);
4094 write_insn
<big_endian
>(p
+ 40, mtctr_0
);
4095 write_insn
<big_endian
>(p
+ 44, add_0_11_11
);
4096 write_insn
<big_endian
>(p
+ 48, add_11_0_11
);
4097 write_insn
<big_endian
>(p
+ 52, bctr
);
4098 write_insn
<big_endian
>(p
+ 56, nop
);
4099 write_insn
<big_endian
>(p
+ 60, nop
);
4103 Address res0
= this->address();
4105 write_insn
<big_endian
>(p
+ 0, lis_12
+ ha(g_o_t
+ 4));
4106 write_insn
<big_endian
>(p
+ 4, addis_11_11
+ ha(-res0
));
4107 if (ha(g_o_t
+ 4) == ha(g_o_t
+ 8))
4108 write_insn
<big_endian
>(p
+ 8, lwz_0_12
+ l(g_o_t
+ 4));
4110 write_insn
<big_endian
>(p
+ 8, lwzu_0_12
+ l(g_o_t
+ 4));
4111 write_insn
<big_endian
>(p
+ 12, addi_11_11
+ l(-res0
));
4112 write_insn
<big_endian
>(p
+ 16, mtctr_0
);
4113 write_insn
<big_endian
>(p
+ 20, add_0_11_11
);
4114 if (ha(g_o_t
+ 4) == ha(g_o_t
+ 8))
4115 write_insn
<big_endian
>(p
+ 24, lwz_12_12
+ l(g_o_t
+ 8));
4117 write_insn
<big_endian
>(p
+ 24, lwz_12_12
+ 4);
4118 write_insn
<big_endian
>(p
+ 28, add_11_0_11
);
4119 write_insn
<big_endian
>(p
+ 32, bctr
);
4120 write_insn
<big_endian
>(p
+ 36, nop
);
4121 write_insn
<big_endian
>(p
+ 40, nop
);
4122 write_insn
<big_endian
>(p
+ 44, nop
);
4123 write_insn
<big_endian
>(p
+ 48, nop
);
4124 write_insn
<big_endian
>(p
+ 52, nop
);
4125 write_insn
<big_endian
>(p
+ 56, nop
);
4126 write_insn
<big_endian
>(p
+ 60, nop
);
4131 of
->write_output_view(off
, oview_size
, oview
);
4135 // A class to handle linker generated save/restore functions.
4137 template<int size
, bool big_endian
>
4138 class Output_data_save_res
: public Output_section_data_build
4141 Output_data_save_res(Symbol_table
* symtab
);
4144 // Write to a map file.
4146 do_print_to_mapfile(Mapfile
* mapfile
) const
4147 { mapfile
->print_output_data(this, _("** save/restore")); }
4150 do_write(Output_file
*);
4153 // The maximum size of save/restore contents.
4154 static const unsigned int savres_max
= 218*4;
4157 savres_define(Symbol_table
* symtab
,
4159 unsigned int lo
, unsigned int hi
,
4160 unsigned char* write_ent(unsigned char*, int),
4161 unsigned char* write_tail(unsigned char*, int));
4163 unsigned char *contents_
;
4166 template<bool big_endian
>
4167 static unsigned char*
4168 savegpr0(unsigned char* p
, int r
)
4170 uint32_t insn
= std_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4171 write_insn
<big_endian
>(p
, insn
);
4175 template<bool big_endian
>
4176 static unsigned char*
4177 savegpr0_tail(unsigned char* p
, int r
)
4179 p
= savegpr0
<big_endian
>(p
, r
);
4180 uint32_t insn
= std_0_1
+ 16;
4181 write_insn
<big_endian
>(p
, insn
);
4183 write_insn
<big_endian
>(p
, blr
);
4187 template<bool big_endian
>
4188 static unsigned char*
4189 restgpr0(unsigned char* p
, int r
)
4191 uint32_t insn
= ld_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4192 write_insn
<big_endian
>(p
, insn
);
4196 template<bool big_endian
>
4197 static unsigned char*
4198 restgpr0_tail(unsigned char* p
, int r
)
4200 uint32_t insn
= ld_0_1
+ 16;
4201 write_insn
<big_endian
>(p
, insn
);
4203 p
= restgpr0
<big_endian
>(p
, r
);
4204 write_insn
<big_endian
>(p
, mtlr_0
);
4208 p
= restgpr0
<big_endian
>(p
, 30);
4209 p
= restgpr0
<big_endian
>(p
, 31);
4211 write_insn
<big_endian
>(p
, blr
);
4215 template<bool big_endian
>
4216 static unsigned char*
4217 savegpr1(unsigned char* p
, int r
)
4219 uint32_t insn
= std_0_12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4220 write_insn
<big_endian
>(p
, insn
);
4224 template<bool big_endian
>
4225 static unsigned char*
4226 savegpr1_tail(unsigned char* p
, int r
)
4228 p
= savegpr1
<big_endian
>(p
, r
);
4229 write_insn
<big_endian
>(p
, blr
);
4233 template<bool big_endian
>
4234 static unsigned char*
4235 restgpr1(unsigned char* p
, int r
)
4237 uint32_t insn
= ld_0_12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4238 write_insn
<big_endian
>(p
, insn
);
4242 template<bool big_endian
>
4243 static unsigned char*
4244 restgpr1_tail(unsigned char* p
, int r
)
4246 p
= restgpr1
<big_endian
>(p
, r
);
4247 write_insn
<big_endian
>(p
, blr
);
4251 template<bool big_endian
>
4252 static unsigned char*
4253 savefpr(unsigned char* p
, int r
)
4255 uint32_t insn
= stfd_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4256 write_insn
<big_endian
>(p
, insn
);
4260 template<bool big_endian
>
4261 static unsigned char*
4262 savefpr0_tail(unsigned char* p
, int r
)
4264 p
= savefpr
<big_endian
>(p
, r
);
4265 write_insn
<big_endian
>(p
, std_0_1
+ 16);
4267 write_insn
<big_endian
>(p
, blr
);
4271 template<bool big_endian
>
4272 static unsigned char*
4273 restfpr(unsigned char* p
, int r
)
4275 uint32_t insn
= lfd_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4276 write_insn
<big_endian
>(p
, insn
);
4280 template<bool big_endian
>
4281 static unsigned char*
4282 restfpr0_tail(unsigned char* p
, int r
)
4284 write_insn
<big_endian
>(p
, ld_0_1
+ 16);
4286 p
= restfpr
<big_endian
>(p
, r
);
4287 write_insn
<big_endian
>(p
, mtlr_0
);
4291 p
= restfpr
<big_endian
>(p
, 30);
4292 p
= restfpr
<big_endian
>(p
, 31);
4294 write_insn
<big_endian
>(p
, blr
);
4298 template<bool big_endian
>
4299 static unsigned char*
4300 savefpr1_tail(unsigned char* p
, int r
)
4302 p
= savefpr
<big_endian
>(p
, r
);
4303 write_insn
<big_endian
>(p
, blr
);
4307 template<bool big_endian
>
4308 static unsigned char*
4309 restfpr1_tail(unsigned char* p
, int r
)
4311 p
= restfpr
<big_endian
>(p
, r
);
4312 write_insn
<big_endian
>(p
, blr
);
4316 template<bool big_endian
>
4317 static unsigned char*
4318 savevr(unsigned char* p
, int r
)
4320 uint32_t insn
= li_12_0
+ (1 << 16) - (32 - r
) * 16;
4321 write_insn
<big_endian
>(p
, insn
);
4323 insn
= stvx_0_12_0
+ (r
<< 21);
4324 write_insn
<big_endian
>(p
, insn
);
4328 template<bool big_endian
>
4329 static unsigned char*
4330 savevr_tail(unsigned char* p
, int r
)
4332 p
= savevr
<big_endian
>(p
, r
);
4333 write_insn
<big_endian
>(p
, blr
);
4337 template<bool big_endian
>
4338 static unsigned char*
4339 restvr(unsigned char* p
, int r
)
4341 uint32_t insn
= li_12_0
+ (1 << 16) - (32 - r
) * 16;
4342 write_insn
<big_endian
>(p
, insn
);
4344 insn
= lvx_0_12_0
+ (r
<< 21);
4345 write_insn
<big_endian
>(p
, insn
);
4349 template<bool big_endian
>
4350 static unsigned char*
4351 restvr_tail(unsigned char* p
, int r
)
4353 p
= restvr
<big_endian
>(p
, r
);
4354 write_insn
<big_endian
>(p
, blr
);
4359 template<int size
, bool big_endian
>
4360 Output_data_save_res
<size
, big_endian
>::Output_data_save_res(
4361 Symbol_table
* symtab
)
4362 : Output_section_data_build(4),
4365 this->savres_define(symtab
,
4366 "_savegpr0_", 14, 31,
4367 savegpr0
<big_endian
>, savegpr0_tail
<big_endian
>);
4368 this->savres_define(symtab
,
4369 "_restgpr0_", 14, 29,
4370 restgpr0
<big_endian
>, restgpr0_tail
<big_endian
>);
4371 this->savres_define(symtab
,
4372 "_restgpr0_", 30, 31,
4373 restgpr0
<big_endian
>, restgpr0_tail
<big_endian
>);
4374 this->savres_define(symtab
,
4375 "_savegpr1_", 14, 31,
4376 savegpr1
<big_endian
>, savegpr1_tail
<big_endian
>);
4377 this->savres_define(symtab
,
4378 "_restgpr1_", 14, 31,
4379 restgpr1
<big_endian
>, restgpr1_tail
<big_endian
>);
4380 this->savres_define(symtab
,
4381 "_savefpr_", 14, 31,
4382 savefpr
<big_endian
>, savefpr0_tail
<big_endian
>);
4383 this->savres_define(symtab
,
4384 "_restfpr_", 14, 29,
4385 restfpr
<big_endian
>, restfpr0_tail
<big_endian
>);
4386 this->savres_define(symtab
,
4387 "_restfpr_", 30, 31,
4388 restfpr
<big_endian
>, restfpr0_tail
<big_endian
>);
4389 this->savres_define(symtab
,
4391 savefpr
<big_endian
>, savefpr1_tail
<big_endian
>);
4392 this->savres_define(symtab
,
4394 restfpr
<big_endian
>, restfpr1_tail
<big_endian
>);
4395 this->savres_define(symtab
,
4397 savevr
<big_endian
>, savevr_tail
<big_endian
>);
4398 this->savres_define(symtab
,
4400 restvr
<big_endian
>, restvr_tail
<big_endian
>);
4403 template<int size
, bool big_endian
>
4405 Output_data_save_res
<size
, big_endian
>::savres_define(
4406 Symbol_table
* symtab
,
4408 unsigned int lo
, unsigned int hi
,
4409 unsigned char* write_ent(unsigned char*, int),
4410 unsigned char* write_tail(unsigned char*, int))
4412 size_t len
= strlen(name
);
4413 bool writing
= false;
4416 memcpy(sym
, name
, len
);
4419 for (unsigned int i
= lo
; i
<= hi
; i
++)
4421 sym
[len
+ 0] = i
/ 10 + '0';
4422 sym
[len
+ 1] = i
% 10 + '0';
4423 Symbol
* gsym
= symtab
->lookup(sym
);
4424 bool refd
= gsym
!= NULL
&& gsym
->is_undefined();
4425 writing
= writing
|| refd
;
4428 if (this->contents_
== NULL
)
4429 this->contents_
= new unsigned char[this->savres_max
];
4431 section_size_type value
= this->current_data_size();
4432 unsigned char* p
= this->contents_
+ value
;
4434 p
= write_ent(p
, i
);
4436 p
= write_tail(p
, i
);
4437 section_size_type cur_size
= p
- this->contents_
;
4438 this->set_current_data_size(cur_size
);
4440 symtab
->define_in_output_data(sym
, NULL
, Symbol_table::PREDEFINED
,
4441 this, value
, cur_size
- value
,
4442 elfcpp::STT_FUNC
, elfcpp::STB_GLOBAL
,
4443 elfcpp::STV_HIDDEN
, 0, false, false);
4448 // Write out save/restore.
4450 template<int size
, bool big_endian
>
4452 Output_data_save_res
<size
, big_endian
>::do_write(Output_file
* of
)
4454 const section_size_type off
= this->offset();
4455 const section_size_type oview_size
=
4456 convert_to_section_size_type(this->data_size());
4457 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
4458 memcpy(oview
, this->contents_
, oview_size
);
4459 of
->write_output_view(off
, oview_size
, oview
);
4463 // Create the glink section.
4465 template<int size
, bool big_endian
>
4467 Target_powerpc
<size
, big_endian
>::make_glink_section(Layout
* layout
)
4469 if (this->glink_
== NULL
)
4471 this->glink_
= new Output_data_glink
<size
, big_endian
>(this);
4472 this->glink_
->add_eh_frame(layout
);
4473 layout
->add_output_section_data(".text", elfcpp::SHT_PROGBITS
,
4474 elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
,
4475 this->glink_
, ORDER_TEXT
, false);
4479 // Create a PLT entry for a global symbol.
4481 template<int size
, bool big_endian
>
4483 Target_powerpc
<size
, big_endian
>::make_plt_entry(Symbol_table
* symtab
,
4487 if (gsym
->type() == elfcpp::STT_GNU_IFUNC
4488 && gsym
->can_use_relative_reloc(false))
4490 if (this->iplt_
== NULL
)
4491 this->make_iplt_section(symtab
, layout
);
4492 this->iplt_
->add_ifunc_entry(gsym
);
4496 if (this->plt_
== NULL
)
4497 this->make_plt_section(symtab
, layout
);
4498 this->plt_
->add_entry(gsym
);
4502 // Make a PLT entry for a local STT_GNU_IFUNC symbol.
4504 template<int size
, bool big_endian
>
4506 Target_powerpc
<size
, big_endian
>::make_local_ifunc_plt_entry(
4507 Symbol_table
* symtab
,
4509 Sized_relobj_file
<size
, big_endian
>* relobj
,
4512 if (this->iplt_
== NULL
)
4513 this->make_iplt_section(symtab
, layout
);
4514 this->iplt_
->add_local_ifunc_entry(relobj
, r_sym
);
4517 // Return the number of entries in the PLT.
4519 template<int size
, bool big_endian
>
4521 Target_powerpc
<size
, big_endian
>::plt_entry_count() const
4523 if (this->plt_
== NULL
)
4525 unsigned int count
= this->plt_
->entry_count();
4526 if (this->iplt_
!= NULL
)
4527 count
+= this->iplt_
->entry_count();
4531 // Return the offset of the first non-reserved PLT entry.
4533 template<int size
, bool big_endian
>
4535 Target_powerpc
<size
, big_endian
>::first_plt_entry_offset() const
4537 return this->plt_
->first_plt_entry_offset();
4540 // Return the size of each PLT entry.
4542 template<int size
, bool big_endian
>
4544 Target_powerpc
<size
, big_endian
>::plt_entry_size() const
4546 return Output_data_plt_powerpc
<size
, big_endian
>::get_plt_entry_size();
4549 // Create a GOT entry for local dynamic __tls_get_addr calls.
4551 template<int size
, bool big_endian
>
4553 Target_powerpc
<size
, big_endian
>::tlsld_got_offset(
4554 Symbol_table
* symtab
,
4556 Sized_relobj_file
<size
, big_endian
>* object
)
4558 if (this->tlsld_got_offset_
== -1U)
4560 gold_assert(symtab
!= NULL
&& layout
!= NULL
&& object
!= NULL
);
4561 Reloc_section
* rela_dyn
= this->rela_dyn_section(layout
);
4562 Output_data_got_powerpc
<size
, big_endian
>* got
4563 = this->got_section(symtab
, layout
);
4564 unsigned int got_offset
= got
->add_constant_pair(0, 0);
4565 rela_dyn
->add_local(object
, 0, elfcpp::R_POWERPC_DTPMOD
, got
,
4567 this->tlsld_got_offset_
= got_offset
;
4569 return this->tlsld_got_offset_
;
4572 // Get the Reference_flags for a particular relocation.
4574 template<int size
, bool big_endian
>
4576 Target_powerpc
<size
, big_endian
>::Scan::get_reference_flags(unsigned int r_type
)
4580 case elfcpp::R_POWERPC_NONE
:
4581 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
4582 case elfcpp::R_POWERPC_GNU_VTENTRY
:
4583 case elfcpp::R_PPC64_TOC
:
4584 // No symbol reference.
4587 case elfcpp::R_PPC64_ADDR64
:
4588 case elfcpp::R_PPC64_UADDR64
:
4589 case elfcpp::R_POWERPC_ADDR32
:
4590 case elfcpp::R_POWERPC_UADDR32
:
4591 case elfcpp::R_POWERPC_ADDR16
:
4592 case elfcpp::R_POWERPC_UADDR16
:
4593 case elfcpp::R_POWERPC_ADDR16_LO
:
4594 case elfcpp::R_POWERPC_ADDR16_HI
:
4595 case elfcpp::R_POWERPC_ADDR16_HA
:
4596 return Symbol::ABSOLUTE_REF
;
4598 case elfcpp::R_POWERPC_ADDR24
:
4599 case elfcpp::R_POWERPC_ADDR14
:
4600 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
4601 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
4602 return Symbol::FUNCTION_CALL
| Symbol::ABSOLUTE_REF
;
4604 case elfcpp::R_PPC64_REL64
:
4605 case elfcpp::R_POWERPC_REL32
:
4606 case elfcpp::R_PPC_LOCAL24PC
:
4607 case elfcpp::R_POWERPC_REL16
:
4608 case elfcpp::R_POWERPC_REL16_LO
:
4609 case elfcpp::R_POWERPC_REL16_HI
:
4610 case elfcpp::R_POWERPC_REL16_HA
:
4611 return Symbol::RELATIVE_REF
;
4613 case elfcpp::R_POWERPC_REL24
:
4614 case elfcpp::R_PPC_PLTREL24
:
4615 case elfcpp::R_POWERPC_REL14
:
4616 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
4617 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
4618 return Symbol::FUNCTION_CALL
| Symbol::RELATIVE_REF
;
4620 case elfcpp::R_POWERPC_GOT16
:
4621 case elfcpp::R_POWERPC_GOT16_LO
:
4622 case elfcpp::R_POWERPC_GOT16_HI
:
4623 case elfcpp::R_POWERPC_GOT16_HA
:
4624 case elfcpp::R_PPC64_GOT16_DS
:
4625 case elfcpp::R_PPC64_GOT16_LO_DS
:
4626 case elfcpp::R_PPC64_TOC16
:
4627 case elfcpp::R_PPC64_TOC16_LO
:
4628 case elfcpp::R_PPC64_TOC16_HI
:
4629 case elfcpp::R_PPC64_TOC16_HA
:
4630 case elfcpp::R_PPC64_TOC16_DS
:
4631 case elfcpp::R_PPC64_TOC16_LO_DS
:
4633 return Symbol::ABSOLUTE_REF
;
4635 case elfcpp::R_POWERPC_GOT_TPREL16
:
4636 case elfcpp::R_POWERPC_TLS
:
4637 return Symbol::TLS_REF
;
4639 case elfcpp::R_POWERPC_COPY
:
4640 case elfcpp::R_POWERPC_GLOB_DAT
:
4641 case elfcpp::R_POWERPC_JMP_SLOT
:
4642 case elfcpp::R_POWERPC_RELATIVE
:
4643 case elfcpp::R_POWERPC_DTPMOD
:
4645 // Not expected. We will give an error later.
4650 // Report an unsupported relocation against a local symbol.
4652 template<int size
, bool big_endian
>
4654 Target_powerpc
<size
, big_endian
>::Scan::unsupported_reloc_local(
4655 Sized_relobj_file
<size
, big_endian
>* object
,
4656 unsigned int r_type
)
4658 gold_error(_("%s: unsupported reloc %u against local symbol"),
4659 object
->name().c_str(), r_type
);
4662 // We are about to emit a dynamic relocation of type R_TYPE. If the
4663 // dynamic linker does not support it, issue an error.
4665 template<int size
, bool big_endian
>
4667 Target_powerpc
<size
, big_endian
>::Scan::check_non_pic(Relobj
* object
,
4668 unsigned int r_type
)
4670 gold_assert(r_type
!= elfcpp::R_POWERPC_NONE
);
4672 // These are the relocation types supported by glibc for both 32-bit
4673 // and 64-bit powerpc.
4676 case elfcpp::R_POWERPC_NONE
:
4677 case elfcpp::R_POWERPC_RELATIVE
:
4678 case elfcpp::R_POWERPC_GLOB_DAT
:
4679 case elfcpp::R_POWERPC_DTPMOD
:
4680 case elfcpp::R_POWERPC_DTPREL
:
4681 case elfcpp::R_POWERPC_TPREL
:
4682 case elfcpp::R_POWERPC_JMP_SLOT
:
4683 case elfcpp::R_POWERPC_COPY
:
4684 case elfcpp::R_POWERPC_IRELATIVE
:
4685 case elfcpp::R_POWERPC_ADDR32
:
4686 case elfcpp::R_POWERPC_UADDR32
:
4687 case elfcpp::R_POWERPC_ADDR24
:
4688 case elfcpp::R_POWERPC_ADDR16
:
4689 case elfcpp::R_POWERPC_UADDR16
:
4690 case elfcpp::R_POWERPC_ADDR16_LO
:
4691 case elfcpp::R_POWERPC_ADDR16_HI
:
4692 case elfcpp::R_POWERPC_ADDR16_HA
:
4693 case elfcpp::R_POWERPC_ADDR14
:
4694 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
4695 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
4696 case elfcpp::R_POWERPC_REL32
:
4697 case elfcpp::R_POWERPC_REL24
:
4698 case elfcpp::R_POWERPC_TPREL16
:
4699 case elfcpp::R_POWERPC_TPREL16_LO
:
4700 case elfcpp::R_POWERPC_TPREL16_HI
:
4701 case elfcpp::R_POWERPC_TPREL16_HA
:
4712 // These are the relocation types supported only on 64-bit.
4713 case elfcpp::R_PPC64_ADDR64
:
4714 case elfcpp::R_PPC64_UADDR64
:
4715 case elfcpp::R_PPC64_JMP_IREL
:
4716 case elfcpp::R_PPC64_ADDR16_DS
:
4717 case elfcpp::R_PPC64_ADDR16_LO_DS
:
4718 case elfcpp::R_PPC64_ADDR16_HIGHER
:
4719 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
4720 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
4721 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
4722 case elfcpp::R_PPC64_REL64
:
4723 case elfcpp::R_POWERPC_ADDR30
:
4724 case elfcpp::R_PPC64_TPREL16_DS
:
4725 case elfcpp::R_PPC64_TPREL16_LO_DS
:
4726 case elfcpp::R_PPC64_TPREL16_HIGHER
:
4727 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
4728 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
4729 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
4740 // These are the relocation types supported only on 32-bit.
4741 // ??? glibc ld.so doesn't need to support these.
4742 case elfcpp::R_POWERPC_DTPREL16
:
4743 case elfcpp::R_POWERPC_DTPREL16_LO
:
4744 case elfcpp::R_POWERPC_DTPREL16_HI
:
4745 case elfcpp::R_POWERPC_DTPREL16_HA
:
4753 // This prevents us from issuing more than one error per reloc
4754 // section. But we can still wind up issuing more than one
4755 // error per object file.
4756 if (this->issued_non_pic_error_
)
4758 gold_assert(parameters
->options().output_is_position_independent());
4759 object
->error(_("requires unsupported dynamic reloc; "
4760 "recompile with -fPIC"));
4761 this->issued_non_pic_error_
= true;
4765 // Return whether we need to make a PLT entry for a relocation of the
4766 // given type against a STT_GNU_IFUNC symbol.
4768 template<int size
, bool big_endian
>
4770 Target_powerpc
<size
, big_endian
>::Scan::reloc_needs_plt_for_ifunc(
4771 Sized_relobj_file
<size
, big_endian
>* object
,
4772 unsigned int r_type
)
4774 // In non-pic code any reference will resolve to the plt call stub
4775 // for the ifunc symbol.
4776 if (size
== 32 && !parameters
->options().output_is_position_independent())
4781 // Word size refs from data sections are OK.
4782 case elfcpp::R_POWERPC_ADDR32
:
4783 case elfcpp::R_POWERPC_UADDR32
:
4788 case elfcpp::R_PPC64_ADDR64
:
4789 case elfcpp::R_PPC64_UADDR64
:
4794 // GOT refs are good.
4795 case elfcpp::R_POWERPC_GOT16
:
4796 case elfcpp::R_POWERPC_GOT16_LO
:
4797 case elfcpp::R_POWERPC_GOT16_HI
:
4798 case elfcpp::R_POWERPC_GOT16_HA
:
4799 case elfcpp::R_PPC64_GOT16_DS
:
4800 case elfcpp::R_PPC64_GOT16_LO_DS
:
4803 // So are function calls.
4804 case elfcpp::R_POWERPC_ADDR24
:
4805 case elfcpp::R_POWERPC_ADDR14
:
4806 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
4807 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
4808 case elfcpp::R_POWERPC_REL24
:
4809 case elfcpp::R_PPC_PLTREL24
:
4810 case elfcpp::R_POWERPC_REL14
:
4811 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
4812 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
4819 // Anything else is a problem.
4820 // If we are building a static executable, the libc startup function
4821 // responsible for applying indirect function relocations is going
4822 // to complain about the reloc type.
4823 // If we are building a dynamic executable, we will have a text
4824 // relocation. The dynamic loader will set the text segment
4825 // writable and non-executable to apply text relocations. So we'll
4826 // segfault when trying to run the indirection function to resolve
4828 gold_error(_("%s: unsupported reloc %u for IFUNC symbol"),
4829 object
->name().c_str(), r_type
);
4833 // Scan a relocation for a local symbol.
4835 template<int size
, bool big_endian
>
4837 Target_powerpc
<size
, big_endian
>::Scan::local(
4838 Symbol_table
* symtab
,
4840 Target_powerpc
<size
, big_endian
>* target
,
4841 Sized_relobj_file
<size
, big_endian
>* object
,
4842 unsigned int data_shndx
,
4843 Output_section
* output_section
,
4844 const elfcpp::Rela
<size
, big_endian
>& reloc
,
4845 unsigned int r_type
,
4846 const elfcpp::Sym
<size
, big_endian
>& lsym
,
4849 this->maybe_skip_tls_get_addr_call(r_type
, NULL
);
4851 if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
4852 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
4854 this->expect_tls_get_addr_call();
4855 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(true);
4856 if (tls_type
!= tls::TLSOPT_NONE
)
4857 this->skip_next_tls_get_addr_call();
4859 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
4860 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
4862 this->expect_tls_get_addr_call();
4863 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
4864 if (tls_type
!= tls::TLSOPT_NONE
)
4865 this->skip_next_tls_get_addr_call();
4868 Powerpc_relobj
<size
, big_endian
>* ppc_object
4869 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
4874 && data_shndx
== ppc_object
->opd_shndx()
4875 && r_type
== elfcpp::R_PPC64_ADDR64
)
4876 ppc_object
->set_opd_discard(reloc
.get_r_offset());
4880 // A local STT_GNU_IFUNC symbol may require a PLT entry.
4881 bool is_ifunc
= lsym
.get_st_type() == elfcpp::STT_GNU_IFUNC
;
4882 if (is_ifunc
&& this->reloc_needs_plt_for_ifunc(object
, r_type
))
4884 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
4885 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
4886 r_type
, r_sym
, reloc
.get_r_addend());
4887 target
->make_local_ifunc_plt_entry(symtab
, layout
, object
, r_sym
);
4892 case elfcpp::R_POWERPC_NONE
:
4893 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
4894 case elfcpp::R_POWERPC_GNU_VTENTRY
:
4895 case elfcpp::R_PPC64_TOCSAVE
:
4896 case elfcpp::R_PPC_EMB_MRKREF
:
4897 case elfcpp::R_POWERPC_TLS
:
4900 case elfcpp::R_PPC64_TOC
:
4902 Output_data_got_powerpc
<size
, big_endian
>* got
4903 = target
->got_section(symtab
, layout
);
4904 if (parameters
->options().output_is_position_independent())
4906 Address off
= reloc
.get_r_offset();
4908 && data_shndx
== ppc_object
->opd_shndx()
4909 && ppc_object
->get_opd_discard(off
- 8))
4912 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
4913 Powerpc_relobj
<size
, big_endian
>* symobj
= ppc_object
;
4914 rela_dyn
->add_output_section_relative(got
->output_section(),
4915 elfcpp::R_POWERPC_RELATIVE
,
4917 object
, data_shndx
, off
,
4918 symobj
->toc_base_offset());
4923 case elfcpp::R_PPC64_ADDR64
:
4924 case elfcpp::R_PPC64_UADDR64
:
4925 case elfcpp::R_POWERPC_ADDR32
:
4926 case elfcpp::R_POWERPC_UADDR32
:
4927 case elfcpp::R_POWERPC_ADDR24
:
4928 case elfcpp::R_POWERPC_ADDR16
:
4929 case elfcpp::R_POWERPC_ADDR16_LO
:
4930 case elfcpp::R_POWERPC_ADDR16_HI
:
4931 case elfcpp::R_POWERPC_ADDR16_HA
:
4932 case elfcpp::R_POWERPC_UADDR16
:
4933 case elfcpp::R_PPC64_ADDR16_HIGHER
:
4934 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
4935 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
4936 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
4937 case elfcpp::R_PPC64_ADDR16_DS
:
4938 case elfcpp::R_PPC64_ADDR16_LO_DS
:
4939 case elfcpp::R_POWERPC_ADDR14
:
4940 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
4941 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
4942 // If building a shared library (or a position-independent
4943 // executable), we need to create a dynamic relocation for
4945 if (parameters
->options().output_is_position_independent()
4946 || (size
== 64 && is_ifunc
))
4948 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
4950 if ((size
== 32 && r_type
== elfcpp::R_POWERPC_ADDR32
)
4951 || (size
== 64 && r_type
== elfcpp::R_PPC64_ADDR64
))
4953 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
4954 unsigned int dynrel
= elfcpp::R_POWERPC_RELATIVE
;
4957 rela_dyn
= target
->iplt_section()->rel_plt();
4958 dynrel
= elfcpp::R_POWERPC_IRELATIVE
;
4960 rela_dyn
->add_local_relative(object
, r_sym
, dynrel
,
4961 output_section
, data_shndx
,
4962 reloc
.get_r_offset(),
4963 reloc
.get_r_addend(), false);
4967 check_non_pic(object
, r_type
);
4968 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
4969 rela_dyn
->add_local(object
, r_sym
, r_type
, output_section
,
4970 data_shndx
, reloc
.get_r_offset(),
4971 reloc
.get_r_addend());
4976 case elfcpp::R_POWERPC_REL24
:
4977 case elfcpp::R_PPC_PLTREL24
:
4978 case elfcpp::R_PPC_LOCAL24PC
:
4979 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
4980 r_type
, elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
4981 reloc
.get_r_addend());
4984 case elfcpp::R_POWERPC_REL14
:
4985 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
4986 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
4987 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
4988 r_type
, elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
4989 reloc
.get_r_addend());
4992 case elfcpp::R_PPC64_REL64
:
4993 case elfcpp::R_POWERPC_REL32
:
4994 case elfcpp::R_POWERPC_REL16
:
4995 case elfcpp::R_POWERPC_REL16_LO
:
4996 case elfcpp::R_POWERPC_REL16_HI
:
4997 case elfcpp::R_POWERPC_REL16_HA
:
4998 case elfcpp::R_POWERPC_SECTOFF
:
4999 case elfcpp::R_POWERPC_TPREL16
:
5000 case elfcpp::R_POWERPC_DTPREL16
:
5001 case elfcpp::R_POWERPC_SECTOFF_LO
:
5002 case elfcpp::R_POWERPC_TPREL16_LO
:
5003 case elfcpp::R_POWERPC_DTPREL16_LO
:
5004 case elfcpp::R_POWERPC_SECTOFF_HI
:
5005 case elfcpp::R_POWERPC_TPREL16_HI
:
5006 case elfcpp::R_POWERPC_DTPREL16_HI
:
5007 case elfcpp::R_POWERPC_SECTOFF_HA
:
5008 case elfcpp::R_POWERPC_TPREL16_HA
:
5009 case elfcpp::R_POWERPC_DTPREL16_HA
:
5010 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
5011 case elfcpp::R_PPC64_TPREL16_HIGHER
:
5012 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
5013 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
5014 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
5015 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
5016 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
5017 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
5018 case elfcpp::R_PPC64_TPREL16_DS
:
5019 case elfcpp::R_PPC64_TPREL16_LO_DS
:
5020 case elfcpp::R_PPC64_DTPREL16_DS
:
5021 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
5022 case elfcpp::R_PPC64_SECTOFF_DS
:
5023 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
5024 case elfcpp::R_PPC64_TLSGD
:
5025 case elfcpp::R_PPC64_TLSLD
:
5028 case elfcpp::R_POWERPC_GOT16
:
5029 case elfcpp::R_POWERPC_GOT16_LO
:
5030 case elfcpp::R_POWERPC_GOT16_HI
:
5031 case elfcpp::R_POWERPC_GOT16_HA
:
5032 case elfcpp::R_PPC64_GOT16_DS
:
5033 case elfcpp::R_PPC64_GOT16_LO_DS
:
5035 // The symbol requires a GOT entry.
5036 Output_data_got_powerpc
<size
, big_endian
>* got
5037 = target
->got_section(symtab
, layout
);
5038 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5040 if (!parameters
->options().output_is_position_independent())
5042 if (size
== 32 && is_ifunc
)
5043 got
->add_local_plt(object
, r_sym
, GOT_TYPE_STANDARD
);
5045 got
->add_local(object
, r_sym
, GOT_TYPE_STANDARD
);
5047 else if (!object
->local_has_got_offset(r_sym
, GOT_TYPE_STANDARD
))
5049 // If we are generating a shared object or a pie, this
5050 // symbol's GOT entry will be set by a dynamic relocation.
5052 off
= got
->add_constant(0);
5053 object
->set_local_got_offset(r_sym
, GOT_TYPE_STANDARD
, off
);
5055 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5056 unsigned int dynrel
= elfcpp::R_POWERPC_RELATIVE
;
5059 rela_dyn
= target
->iplt_section()->rel_plt();
5060 dynrel
= elfcpp::R_POWERPC_IRELATIVE
;
5062 rela_dyn
->add_local_relative(object
, r_sym
, dynrel
,
5063 got
, off
, 0, false);
5068 case elfcpp::R_PPC64_TOC16
:
5069 case elfcpp::R_PPC64_TOC16_LO
:
5070 case elfcpp::R_PPC64_TOC16_HI
:
5071 case elfcpp::R_PPC64_TOC16_HA
:
5072 case elfcpp::R_PPC64_TOC16_DS
:
5073 case elfcpp::R_PPC64_TOC16_LO_DS
:
5074 // We need a GOT section.
5075 target
->got_section(symtab
, layout
);
5078 case elfcpp::R_POWERPC_GOT_TLSGD16
:
5079 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
5080 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
5081 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
5083 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(true);
5084 if (tls_type
== tls::TLSOPT_NONE
)
5086 Output_data_got_powerpc
<size
, big_endian
>* got
5087 = target
->got_section(symtab
, layout
);
5088 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5089 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5090 got
->add_local_tls_pair(object
, r_sym
, GOT_TYPE_TLSGD
,
5091 rela_dyn
, elfcpp::R_POWERPC_DTPMOD
);
5093 else if (tls_type
== tls::TLSOPT_TO_LE
)
5095 // no GOT relocs needed for Local Exec.
5102 case elfcpp::R_POWERPC_GOT_TLSLD16
:
5103 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
5104 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
5105 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
5107 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
5108 if (tls_type
== tls::TLSOPT_NONE
)
5109 target
->tlsld_got_offset(symtab
, layout
, object
);
5110 else if (tls_type
== tls::TLSOPT_TO_LE
)
5112 // no GOT relocs needed for Local Exec.
5113 if (parameters
->options().emit_relocs())
5115 Output_section
* os
= layout
->tls_segment()->first_section();
5116 gold_assert(os
!= NULL
);
5117 os
->set_needs_symtab_index();
5125 case elfcpp::R_POWERPC_GOT_DTPREL16
:
5126 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
5127 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
5128 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
5130 Output_data_got_powerpc
<size
, big_endian
>* got
5131 = target
->got_section(symtab
, layout
);
5132 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5133 got
->add_local_tls(object
, r_sym
, GOT_TYPE_DTPREL
);
5137 case elfcpp::R_POWERPC_GOT_TPREL16
:
5138 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
5139 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
5140 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
5142 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(true);
5143 if (tls_type
== tls::TLSOPT_NONE
)
5145 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5146 if (!object
->local_has_got_offset(r_sym
, GOT_TYPE_TPREL
))
5148 Output_data_got_powerpc
<size
, big_endian
>* got
5149 = target
->got_section(symtab
, layout
);
5150 unsigned int off
= got
->add_constant(0);
5151 object
->set_local_got_offset(r_sym
, GOT_TYPE_TPREL
, off
);
5153 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5154 rela_dyn
->add_symbolless_local_addend(object
, r_sym
,
5155 elfcpp::R_POWERPC_TPREL
,
5159 else if (tls_type
== tls::TLSOPT_TO_LE
)
5161 // no GOT relocs needed for Local Exec.
5169 unsupported_reloc_local(object
, r_type
);
5175 case elfcpp::R_POWERPC_GOT_TLSLD16
:
5176 case elfcpp::R_POWERPC_GOT_TLSGD16
:
5177 case elfcpp::R_POWERPC_GOT_TPREL16
:
5178 case elfcpp::R_POWERPC_GOT_DTPREL16
:
5179 case elfcpp::R_POWERPC_GOT16
:
5180 case elfcpp::R_PPC64_GOT16_DS
:
5181 case elfcpp::R_PPC64_TOC16
:
5182 case elfcpp::R_PPC64_TOC16_DS
:
5183 ppc_object
->set_has_small_toc_reloc();
5189 // Report an unsupported relocation against a global symbol.
5191 template<int size
, bool big_endian
>
5193 Target_powerpc
<size
, big_endian
>::Scan::unsupported_reloc_global(
5194 Sized_relobj_file
<size
, big_endian
>* object
,
5195 unsigned int r_type
,
5198 gold_error(_("%s: unsupported reloc %u against global symbol %s"),
5199 object
->name().c_str(), r_type
, gsym
->demangled_name().c_str());
5202 // Scan a relocation for a global symbol.
5204 template<int size
, bool big_endian
>
5206 Target_powerpc
<size
, big_endian
>::Scan::global(
5207 Symbol_table
* symtab
,
5209 Target_powerpc
<size
, big_endian
>* target
,
5210 Sized_relobj_file
<size
, big_endian
>* object
,
5211 unsigned int data_shndx
,
5212 Output_section
* output_section
,
5213 const elfcpp::Rela
<size
, big_endian
>& reloc
,
5214 unsigned int r_type
,
5217 if (this->maybe_skip_tls_get_addr_call(r_type
, gsym
) == Track_tls::SKIP
)
5220 if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
5221 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
5223 this->expect_tls_get_addr_call();
5224 const bool final
= gsym
->final_value_is_known();
5225 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
5226 if (tls_type
!= tls::TLSOPT_NONE
)
5227 this->skip_next_tls_get_addr_call();
5229 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
5230 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
5232 this->expect_tls_get_addr_call();
5233 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
5234 if (tls_type
!= tls::TLSOPT_NONE
)
5235 this->skip_next_tls_get_addr_call();
5238 Powerpc_relobj
<size
, big_endian
>* ppc_object
5239 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
5241 // A STT_GNU_IFUNC symbol may require a PLT entry.
5242 if (gsym
->type() == elfcpp::STT_GNU_IFUNC
5243 && this->reloc_needs_plt_for_ifunc(object
, r_type
))
5245 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
5246 r_type
, elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
5247 reloc
.get_r_addend());
5248 target
->make_plt_entry(symtab
, layout
, gsym
);
5253 case elfcpp::R_POWERPC_NONE
:
5254 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
5255 case elfcpp::R_POWERPC_GNU_VTENTRY
:
5256 case elfcpp::R_PPC_LOCAL24PC
:
5257 case elfcpp::R_PPC_EMB_MRKREF
:
5258 case elfcpp::R_POWERPC_TLS
:
5261 case elfcpp::R_PPC64_TOC
:
5263 Output_data_got_powerpc
<size
, big_endian
>* got
5264 = target
->got_section(symtab
, layout
);
5265 if (parameters
->options().output_is_position_independent())
5267 Address off
= reloc
.get_r_offset();
5269 && data_shndx
== ppc_object
->opd_shndx()
5270 && ppc_object
->get_opd_discard(off
- 8))
5273 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5274 Powerpc_relobj
<size
, big_endian
>* symobj
= ppc_object
;
5275 if (data_shndx
!= ppc_object
->opd_shndx())
5276 symobj
= static_cast
5277 <Powerpc_relobj
<size
, big_endian
>*>(gsym
->object());
5278 rela_dyn
->add_output_section_relative(got
->output_section(),
5279 elfcpp::R_POWERPC_RELATIVE
,
5281 object
, data_shndx
, off
,
5282 symobj
->toc_base_offset());
5287 case elfcpp::R_PPC64_ADDR64
:
5289 && data_shndx
== ppc_object
->opd_shndx()
5290 && (gsym
->is_defined_in_discarded_section()
5291 || gsym
->object() != object
))
5293 ppc_object
->set_opd_discard(reloc
.get_r_offset());
5297 case elfcpp::R_PPC64_UADDR64
:
5298 case elfcpp::R_POWERPC_ADDR32
:
5299 case elfcpp::R_POWERPC_UADDR32
:
5300 case elfcpp::R_POWERPC_ADDR24
:
5301 case elfcpp::R_POWERPC_ADDR16
:
5302 case elfcpp::R_POWERPC_ADDR16_LO
:
5303 case elfcpp::R_POWERPC_ADDR16_HI
:
5304 case elfcpp::R_POWERPC_ADDR16_HA
:
5305 case elfcpp::R_POWERPC_UADDR16
:
5306 case elfcpp::R_PPC64_ADDR16_HIGHER
:
5307 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
5308 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
5309 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
5310 case elfcpp::R_PPC64_ADDR16_DS
:
5311 case elfcpp::R_PPC64_ADDR16_LO_DS
:
5312 case elfcpp::R_POWERPC_ADDR14
:
5313 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
5314 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
5316 // Make a PLT entry if necessary.
5317 if (gsym
->needs_plt_entry())
5319 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
5321 elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
5322 reloc
.get_r_addend());
5323 target
->make_plt_entry(symtab
, layout
, gsym
);
5324 // Since this is not a PC-relative relocation, we may be
5325 // taking the address of a function. In that case we need to
5326 // set the entry in the dynamic symbol table to the address of
5327 // the PLT call stub.
5329 && gsym
->is_from_dynobj()
5330 && !parameters
->options().output_is_position_independent())
5331 gsym
->set_needs_dynsym_value();
5333 // Make a dynamic relocation if necessary.
5334 if (needs_dynamic_reloc
<size
>(gsym
, Scan::get_reference_flags(r_type
))
5335 || (size
== 64 && gsym
->type() == elfcpp::STT_GNU_IFUNC
))
5337 if (gsym
->may_need_copy_reloc())
5339 target
->copy_reloc(symtab
, layout
, object
,
5340 data_shndx
, output_section
, gsym
, reloc
);
5342 else if ((size
== 32
5343 && r_type
== elfcpp::R_POWERPC_ADDR32
5344 && gsym
->can_use_relative_reloc(false)
5345 && !(gsym
->visibility() == elfcpp::STV_PROTECTED
5346 && parameters
->options().shared()))
5348 && r_type
== elfcpp::R_PPC64_ADDR64
5349 && (gsym
->can_use_relative_reloc(false)
5350 || data_shndx
== ppc_object
->opd_shndx())))
5352 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5353 unsigned int dynrel
= elfcpp::R_POWERPC_RELATIVE
;
5354 if (gsym
->type() == elfcpp::STT_GNU_IFUNC
)
5356 rela_dyn
= target
->iplt_section()->rel_plt();
5357 dynrel
= elfcpp::R_POWERPC_IRELATIVE
;
5359 rela_dyn
->add_symbolless_global_addend(
5360 gsym
, dynrel
, output_section
, object
, data_shndx
,
5361 reloc
.get_r_offset(), reloc
.get_r_addend());
5365 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5366 check_non_pic(object
, r_type
);
5367 rela_dyn
->add_global(gsym
, r_type
, output_section
,
5369 reloc
.get_r_offset(),
5370 reloc
.get_r_addend());
5376 case elfcpp::R_PPC_PLTREL24
:
5377 case elfcpp::R_POWERPC_REL24
:
5378 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
5379 r_type
, elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
5380 reloc
.get_r_addend());
5381 if (gsym
->needs_plt_entry()
5382 || (!gsym
->final_value_is_known()
5383 && (gsym
->is_undefined()
5384 || gsym
->is_from_dynobj()
5385 || gsym
->is_preemptible())))
5386 target
->make_plt_entry(symtab
, layout
, gsym
);
5389 case elfcpp::R_PPC64_REL64
:
5390 case elfcpp::R_POWERPC_REL32
:
5391 // Make a dynamic relocation if necessary.
5392 if (needs_dynamic_reloc
<size
>(gsym
, Scan::get_reference_flags(r_type
)))
5394 if (gsym
->may_need_copy_reloc())
5396 target
->copy_reloc(symtab
, layout
, object
,
5397 data_shndx
, output_section
, gsym
,
5402 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5403 check_non_pic(object
, r_type
);
5404 rela_dyn
->add_global(gsym
, r_type
, output_section
, object
,
5405 data_shndx
, reloc
.get_r_offset(),
5406 reloc
.get_r_addend());
5411 case elfcpp::R_POWERPC_REL14
:
5412 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
5413 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
5414 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
5415 r_type
, elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
5416 reloc
.get_r_addend());
5419 case elfcpp::R_POWERPC_REL16
:
5420 case elfcpp::R_POWERPC_REL16_LO
:
5421 case elfcpp::R_POWERPC_REL16_HI
:
5422 case elfcpp::R_POWERPC_REL16_HA
:
5423 case elfcpp::R_POWERPC_SECTOFF
:
5424 case elfcpp::R_POWERPC_TPREL16
:
5425 case elfcpp::R_POWERPC_DTPREL16
:
5426 case elfcpp::R_POWERPC_SECTOFF_LO
:
5427 case elfcpp::R_POWERPC_TPREL16_LO
:
5428 case elfcpp::R_POWERPC_DTPREL16_LO
:
5429 case elfcpp::R_POWERPC_SECTOFF_HI
:
5430 case elfcpp::R_POWERPC_TPREL16_HI
:
5431 case elfcpp::R_POWERPC_DTPREL16_HI
:
5432 case elfcpp::R_POWERPC_SECTOFF_HA
:
5433 case elfcpp::R_POWERPC_TPREL16_HA
:
5434 case elfcpp::R_POWERPC_DTPREL16_HA
:
5435 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
5436 case elfcpp::R_PPC64_TPREL16_HIGHER
:
5437 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
5438 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
5439 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
5440 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
5441 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
5442 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
5443 case elfcpp::R_PPC64_TPREL16_DS
:
5444 case elfcpp::R_PPC64_TPREL16_LO_DS
:
5445 case elfcpp::R_PPC64_DTPREL16_DS
:
5446 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
5447 case elfcpp::R_PPC64_SECTOFF_DS
:
5448 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
5449 case elfcpp::R_PPC64_TLSGD
:
5450 case elfcpp::R_PPC64_TLSLD
:
5453 case elfcpp::R_POWERPC_GOT16
:
5454 case elfcpp::R_POWERPC_GOT16_LO
:
5455 case elfcpp::R_POWERPC_GOT16_HI
:
5456 case elfcpp::R_POWERPC_GOT16_HA
:
5457 case elfcpp::R_PPC64_GOT16_DS
:
5458 case elfcpp::R_PPC64_GOT16_LO_DS
:
5460 // The symbol requires a GOT entry.
5461 Output_data_got_powerpc
<size
, big_endian
>* got
;
5463 got
= target
->got_section(symtab
, layout
);
5464 if (gsym
->final_value_is_known())
5466 if (size
== 32 && gsym
->type() == elfcpp::STT_GNU_IFUNC
)
5467 got
->add_global_plt(gsym
, GOT_TYPE_STANDARD
);
5469 got
->add_global(gsym
, GOT_TYPE_STANDARD
);
5471 else if (!gsym
->has_got_offset(GOT_TYPE_STANDARD
))
5473 // If we are generating a shared object or a pie, this
5474 // symbol's GOT entry will be set by a dynamic relocation.
5475 unsigned int off
= got
->add_constant(0);
5476 gsym
->set_got_offset(GOT_TYPE_STANDARD
, off
);
5478 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5479 if (gsym
->can_use_relative_reloc(false)
5481 && gsym
->visibility() == elfcpp::STV_PROTECTED
5482 && parameters
->options().shared()))
5484 unsigned int dynrel
= elfcpp::R_POWERPC_RELATIVE
;
5485 if (gsym
->type() == elfcpp::STT_GNU_IFUNC
)
5487 rela_dyn
= target
->iplt_section()->rel_plt();
5488 dynrel
= elfcpp::R_POWERPC_IRELATIVE
;
5490 rela_dyn
->add_global_relative(gsym
, dynrel
, got
, off
, 0, false);
5494 unsigned int dynrel
= elfcpp::R_POWERPC_GLOB_DAT
;
5495 rela_dyn
->add_global(gsym
, dynrel
, got
, off
, 0);
5501 case elfcpp::R_PPC64_TOC16
:
5502 case elfcpp::R_PPC64_TOC16_LO
:
5503 case elfcpp::R_PPC64_TOC16_HI
:
5504 case elfcpp::R_PPC64_TOC16_HA
:
5505 case elfcpp::R_PPC64_TOC16_DS
:
5506 case elfcpp::R_PPC64_TOC16_LO_DS
:
5507 // We need a GOT section.
5508 target
->got_section(symtab
, layout
);
5511 case elfcpp::R_POWERPC_GOT_TLSGD16
:
5512 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
5513 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
5514 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
5516 const bool final
= gsym
->final_value_is_known();
5517 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
5518 if (tls_type
== tls::TLSOPT_NONE
)
5520 Output_data_got_powerpc
<size
, big_endian
>* got
5521 = target
->got_section(symtab
, layout
);
5522 got
->add_global_pair_with_rel(gsym
, GOT_TYPE_TLSGD
,
5523 target
->rela_dyn_section(layout
),
5524 elfcpp::R_POWERPC_DTPMOD
,
5525 elfcpp::R_POWERPC_DTPREL
);
5527 else if (tls_type
== tls::TLSOPT_TO_IE
)
5529 if (!gsym
->has_got_offset(GOT_TYPE_TPREL
))
5531 Output_data_got_powerpc
<size
, big_endian
>* got
5532 = target
->got_section(symtab
, layout
);
5533 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5534 if (gsym
->is_undefined()
5535 || gsym
->is_from_dynobj())
5537 got
->add_global_with_rel(gsym
, GOT_TYPE_TPREL
, rela_dyn
,
5538 elfcpp::R_POWERPC_TPREL
);
5542 unsigned int off
= got
->add_constant(0);
5543 gsym
->set_got_offset(GOT_TYPE_TPREL
, off
);
5544 unsigned int dynrel
= elfcpp::R_POWERPC_TPREL
;
5545 rela_dyn
->add_symbolless_global_addend(gsym
, dynrel
,
5550 else if (tls_type
== tls::TLSOPT_TO_LE
)
5552 // no GOT relocs needed for Local Exec.
5559 case elfcpp::R_POWERPC_GOT_TLSLD16
:
5560 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
5561 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
5562 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
5564 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
5565 if (tls_type
== tls::TLSOPT_NONE
)
5566 target
->tlsld_got_offset(symtab
, layout
, object
);
5567 else if (tls_type
== tls::TLSOPT_TO_LE
)
5569 // no GOT relocs needed for Local Exec.
5570 if (parameters
->options().emit_relocs())
5572 Output_section
* os
= layout
->tls_segment()->first_section();
5573 gold_assert(os
!= NULL
);
5574 os
->set_needs_symtab_index();
5582 case elfcpp::R_POWERPC_GOT_DTPREL16
:
5583 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
5584 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
5585 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
5587 Output_data_got_powerpc
<size
, big_endian
>* got
5588 = target
->got_section(symtab
, layout
);
5589 if (!gsym
->final_value_is_known()
5590 && (gsym
->is_from_dynobj()
5591 || gsym
->is_undefined()
5592 || gsym
->is_preemptible()))
5593 got
->add_global_with_rel(gsym
, GOT_TYPE_DTPREL
,
5594 target
->rela_dyn_section(layout
),
5595 elfcpp::R_POWERPC_DTPREL
);
5597 got
->add_global_tls(gsym
, GOT_TYPE_DTPREL
);
5601 case elfcpp::R_POWERPC_GOT_TPREL16
:
5602 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
5603 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
5604 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
5606 const bool final
= gsym
->final_value_is_known();
5607 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
5608 if (tls_type
== tls::TLSOPT_NONE
)
5610 if (!gsym
->has_got_offset(GOT_TYPE_TPREL
))
5612 Output_data_got_powerpc
<size
, big_endian
>* got
5613 = target
->got_section(symtab
, layout
);
5614 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5615 if (gsym
->is_undefined()
5616 || gsym
->is_from_dynobj())
5618 got
->add_global_with_rel(gsym
, GOT_TYPE_TPREL
, rela_dyn
,
5619 elfcpp::R_POWERPC_TPREL
);
5623 unsigned int off
= got
->add_constant(0);
5624 gsym
->set_got_offset(GOT_TYPE_TPREL
, off
);
5625 unsigned int dynrel
= elfcpp::R_POWERPC_TPREL
;
5626 rela_dyn
->add_symbolless_global_addend(gsym
, dynrel
,
5631 else if (tls_type
== tls::TLSOPT_TO_LE
)
5633 // no GOT relocs needed for Local Exec.
5641 unsupported_reloc_global(object
, r_type
, gsym
);
5647 case elfcpp::R_POWERPC_GOT_TLSLD16
:
5648 case elfcpp::R_POWERPC_GOT_TLSGD16
:
5649 case elfcpp::R_POWERPC_GOT_TPREL16
:
5650 case elfcpp::R_POWERPC_GOT_DTPREL16
:
5651 case elfcpp::R_POWERPC_GOT16
:
5652 case elfcpp::R_PPC64_GOT16_DS
:
5653 case elfcpp::R_PPC64_TOC16
:
5654 case elfcpp::R_PPC64_TOC16_DS
:
5655 ppc_object
->set_has_small_toc_reloc();
5661 // Process relocations for gc.
5663 template<int size
, bool big_endian
>
5665 Target_powerpc
<size
, big_endian
>::gc_process_relocs(
5666 Symbol_table
* symtab
,
5668 Sized_relobj_file
<size
, big_endian
>* object
,
5669 unsigned int data_shndx
,
5671 const unsigned char* prelocs
,
5673 Output_section
* output_section
,
5674 bool needs_special_offset_handling
,
5675 size_t local_symbol_count
,
5676 const unsigned char* plocal_symbols
)
5678 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
5679 typedef typename Target_powerpc
<size
, big_endian
>::Scan Scan
;
5680 Powerpc_relobj
<size
, big_endian
>* ppc_object
5681 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
5683 ppc_object
->set_opd_valid();
5684 if (size
== 64 && data_shndx
== ppc_object
->opd_shndx())
5686 typename Powerpc_relobj
<size
, big_endian
>::Access_from::iterator p
;
5687 for (p
= ppc_object
->access_from_map()->begin();
5688 p
!= ppc_object
->access_from_map()->end();
5691 Address dst_off
= p
->first
;
5692 unsigned int dst_indx
= ppc_object
->get_opd_ent(dst_off
);
5693 typename Powerpc_relobj
<size
, big_endian
>::Section_refs::iterator s
;
5694 for (s
= p
->second
.begin(); s
!= p
->second
.end(); ++s
)
5696 Object
* src_obj
= s
->first
;
5697 unsigned int src_indx
= s
->second
;
5698 symtab
->gc()->add_reference(src_obj
, src_indx
,
5699 ppc_object
, dst_indx
);
5703 ppc_object
->access_from_map()->clear();
5704 ppc_object
->process_gc_mark(symtab
);
5705 // Don't look at .opd relocs as .opd will reference everything.
5709 gold::gc_process_relocs
<size
, big_endian
, Powerpc
, elfcpp::SHT_RELA
, Scan
,
5710 typename
Target_powerpc::Relocatable_size_for_reloc
>(
5719 needs_special_offset_handling
,
5724 // Handle target specific gc actions when adding a gc reference from
5725 // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX
5726 // and DST_OFF. For powerpc64, this adds a referenc to the code
5727 // section of a function descriptor.
5729 template<int size
, bool big_endian
>
5731 Target_powerpc
<size
, big_endian
>::do_gc_add_reference(
5732 Symbol_table
* symtab
,
5734 unsigned int src_shndx
,
5736 unsigned int dst_shndx
,
5737 Address dst_off
) const
5739 if (size
!= 64 || dst_obj
->is_dynamic())
5742 Powerpc_relobj
<size
, big_endian
>* ppc_object
5743 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(dst_obj
);
5744 if (dst_shndx
== ppc_object
->opd_shndx())
5746 if (ppc_object
->opd_valid())
5748 dst_shndx
= ppc_object
->get_opd_ent(dst_off
);
5749 symtab
->gc()->add_reference(src_obj
, src_shndx
, dst_obj
, dst_shndx
);
5753 // If we haven't run scan_opd_relocs, we must delay
5754 // processing this function descriptor reference.
5755 ppc_object
->add_reference(src_obj
, src_shndx
, dst_off
);
5760 // Add any special sections for this symbol to the gc work list.
5761 // For powerpc64, this adds the code section of a function
5764 template<int size
, bool big_endian
>
5766 Target_powerpc
<size
, big_endian
>::do_gc_mark_symbol(
5767 Symbol_table
* symtab
,
5772 Powerpc_relobj
<size
, big_endian
>* ppc_object
5773 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(sym
->object());
5775 unsigned int shndx
= sym
->shndx(&is_ordinary
);
5776 if (is_ordinary
&& shndx
== ppc_object
->opd_shndx())
5778 Sized_symbol
<size
>* gsym
= symtab
->get_sized_symbol
<size
>(sym
);
5779 Address dst_off
= gsym
->value();
5780 if (ppc_object
->opd_valid())
5782 unsigned int dst_indx
= ppc_object
->get_opd_ent(dst_off
);
5783 symtab
->gc()->worklist().push(Section_id(ppc_object
, dst_indx
));
5786 ppc_object
->add_gc_mark(dst_off
);
5791 // For a symbol location in .opd, set LOC to the location of the
5794 template<int size
, bool big_endian
>
5796 Target_powerpc
<size
, big_endian
>::do_function_location(
5797 Symbol_location
* loc
) const
5801 if (loc
->object
->is_dynamic())
5803 Powerpc_dynobj
<size
, big_endian
>* ppc_object
5804 = static_cast<Powerpc_dynobj
<size
, big_endian
>*>(loc
->object
);
5805 if (loc
->shndx
== ppc_object
->opd_shndx())
5808 Address off
= loc
->offset
- ppc_object
->opd_address();
5809 loc
->shndx
= ppc_object
->get_opd_ent(off
, &dest_off
);
5810 loc
->offset
= dest_off
;
5815 const Powerpc_relobj
<size
, big_endian
>* ppc_object
5816 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>(loc
->object
);
5817 if (loc
->shndx
== ppc_object
->opd_shndx())
5820 loc
->shndx
= ppc_object
->get_opd_ent(loc
->offset
, &dest_off
);
5821 loc
->offset
= dest_off
;
5827 // Scan relocations for a section.
5829 template<int size
, bool big_endian
>
5831 Target_powerpc
<size
, big_endian
>::scan_relocs(
5832 Symbol_table
* symtab
,
5834 Sized_relobj_file
<size
, big_endian
>* object
,
5835 unsigned int data_shndx
,
5836 unsigned int sh_type
,
5837 const unsigned char* prelocs
,
5839 Output_section
* output_section
,
5840 bool needs_special_offset_handling
,
5841 size_t local_symbol_count
,
5842 const unsigned char* plocal_symbols
)
5844 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
5845 typedef typename Target_powerpc
<size
, big_endian
>::Scan Scan
;
5847 if (sh_type
== elfcpp::SHT_REL
)
5849 gold_error(_("%s: unsupported REL reloc section"),
5850 object
->name().c_str());
5854 gold::scan_relocs
<size
, big_endian
, Powerpc
, elfcpp::SHT_RELA
, Scan
>(
5863 needs_special_offset_handling
,
5868 // Functor class for processing the global symbol table.
5869 // Removes symbols defined on discarded opd entries.
5871 template<bool big_endian
>
5872 class Global_symbol_visitor_opd
5875 Global_symbol_visitor_opd()
5879 operator()(Sized_symbol
<64>* sym
)
5881 if (sym
->has_symtab_index()
5882 || sym
->source() != Symbol::FROM_OBJECT
5883 || !sym
->in_real_elf())
5886 if (sym
->object()->is_dynamic())
5889 Powerpc_relobj
<64, big_endian
>* symobj
5890 = static_cast<Powerpc_relobj
<64, big_endian
>*>(sym
->object());
5891 if (symobj
->opd_shndx() == 0)
5895 unsigned int shndx
= sym
->shndx(&is_ordinary
);
5896 if (shndx
== symobj
->opd_shndx()
5897 && symobj
->get_opd_discard(sym
->value()))
5898 sym
->set_symtab_index(-1U);
5902 template<int size
, bool big_endian
>
5904 Target_powerpc
<size
, big_endian
>::define_save_restore_funcs(
5906 Symbol_table
* symtab
)
5910 Output_data_save_res
<64, big_endian
>* savres
5911 = new Output_data_save_res
<64, big_endian
>(symtab
);
5912 layout
->add_output_section_data(".text", elfcpp::SHT_PROGBITS
,
5913 elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
,
5914 savres
, ORDER_TEXT
, false);
5918 // Sort linker created .got section first (for the header), then input
5919 // sections belonging to files using small model code.
5921 template<bool big_endian
>
5922 class Sort_toc_sections
5926 operator()(const Output_section::Input_section
& is1
,
5927 const Output_section::Input_section
& is2
) const
5929 if (!is1
.is_input_section() && is2
.is_input_section())
5932 = (is1
.is_input_section()
5933 && (static_cast<const Powerpc_relobj
<64, big_endian
>*>(is1
.relobj())
5934 ->has_small_toc_reloc()));
5936 = (is2
.is_input_section()
5937 && (static_cast<const Powerpc_relobj
<64, big_endian
>*>(is2
.relobj())
5938 ->has_small_toc_reloc()));
5939 return small1
&& !small2
;
5943 // Finalize the sections.
5945 template<int size
, bool big_endian
>
5947 Target_powerpc
<size
, big_endian
>::do_finalize_sections(
5949 const Input_objects
*,
5950 Symbol_table
* symtab
)
5952 if (parameters
->doing_static_link())
5954 // At least some versions of glibc elf-init.o have a strong
5955 // reference to __rela_iplt marker syms. A weak ref would be
5957 if (this->iplt_
!= NULL
)
5959 Reloc_section
* rel
= this->iplt_
->rel_plt();
5960 symtab
->define_in_output_data("__rela_iplt_start", NULL
,
5961 Symbol_table::PREDEFINED
, rel
, 0, 0,
5962 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
5963 elfcpp::STV_HIDDEN
, 0, false, true);
5964 symtab
->define_in_output_data("__rela_iplt_end", NULL
,
5965 Symbol_table::PREDEFINED
, rel
, 0, 0,
5966 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
5967 elfcpp::STV_HIDDEN
, 0, true, true);
5971 symtab
->define_as_constant("__rela_iplt_start", NULL
,
5972 Symbol_table::PREDEFINED
, 0, 0,
5973 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
5974 elfcpp::STV_HIDDEN
, 0, true, false);
5975 symtab
->define_as_constant("__rela_iplt_end", NULL
,
5976 Symbol_table::PREDEFINED
, 0, 0,
5977 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
5978 elfcpp::STV_HIDDEN
, 0, true, false);
5984 typedef Global_symbol_visitor_opd
<big_endian
> Symbol_visitor
;
5985 symtab
->for_all_symbols
<64, Symbol_visitor
>(Symbol_visitor());
5987 if (!parameters
->options().relocatable())
5989 this->define_save_restore_funcs(layout
, symtab
);
5991 // Annoyingly, we need to make these sections now whether or
5992 // not we need them. If we delay until do_relax then we
5993 // need to mess with the relaxation machinery checkpointing.
5994 this->got_section(symtab
, layout
);
5995 this->make_brlt_section(layout
);
5997 if (parameters
->options().toc_sort())
5999 Output_section
* os
= this->got_
->output_section();
6000 if (os
!= NULL
&& os
->input_sections().size() > 1)
6001 std::stable_sort(os
->input_sections().begin(),
6002 os
->input_sections().end(),
6003 Sort_toc_sections
<big_endian
>());
6008 // Fill in some more dynamic tags.
6009 Output_data_dynamic
* odyn
= layout
->dynamic_data();
6012 const Reloc_section
* rel_plt
= (this->plt_
== NULL
6014 : this->plt_
->rel_plt());
6015 layout
->add_target_dynamic_tags(false, this->plt_
, rel_plt
,
6016 this->rela_dyn_
, true, size
== 32);
6020 if (this->got_
!= NULL
)
6022 this->got_
->finalize_data_size();
6023 odyn
->add_section_plus_offset(elfcpp::DT_PPC_GOT
,
6024 this->got_
, this->got_
->g_o_t());
6029 if (this->glink_
!= NULL
)
6031 this->glink_
->finalize_data_size();
6032 odyn
->add_section_plus_offset(elfcpp::DT_PPC64_GLINK
,
6034 (this->glink_
->pltresolve_size
6040 // Emit any relocs we saved in an attempt to avoid generating COPY
6042 if (this->copy_relocs_
.any_saved_relocs())
6043 this->copy_relocs_
.emit(this->rela_dyn_section(layout
));
6046 // Return TRUE iff INSN is one we expect on a _LO variety toc/got
6050 ok_lo_toc_insn(uint32_t insn
)
6052 return ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
6053 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
6054 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
6055 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
6056 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
6057 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
6058 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
6059 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
6060 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
6061 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
6062 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
6063 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
6064 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
6065 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
6066 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
6068 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
6069 && ((insn
& 3) == 0 || (insn
& 3) == 3))
6070 || (insn
& (0x3f << 26)) == 12u << 26 /* addic */);
6073 // Return the value to use for a branch relocation.
6075 template<int size
, bool big_endian
>
6076 typename Target_powerpc
<size
, big_endian
>::Address
6077 Target_powerpc
<size
, big_endian
>::symval_for_branch(
6078 const Symbol_table
* symtab
,
6080 const Sized_symbol
<size
>* gsym
,
6081 Powerpc_relobj
<size
, big_endian
>* object
,
6082 unsigned int *dest_shndx
)
6088 // If the symbol is defined in an opd section, ie. is a function
6089 // descriptor, use the function descriptor code entry address
6090 Powerpc_relobj
<size
, big_endian
>* symobj
= object
;
6092 && gsym
->source() != Symbol::FROM_OBJECT
)
6095 symobj
= static_cast<Powerpc_relobj
<size
, big_endian
>*>(gsym
->object());
6096 unsigned int shndx
= symobj
->opd_shndx();
6099 Address opd_addr
= symobj
->get_output_section_offset(shndx
);
6100 gold_assert(opd_addr
!= invalid_address
);
6101 opd_addr
+= symobj
->output_section(shndx
)->address();
6102 if (value
>= opd_addr
&& value
< opd_addr
+ symobj
->section_size(shndx
))
6105 *dest_shndx
= symobj
->get_opd_ent(value
- opd_addr
, &sec_off
);
6106 if (symtab
->is_section_folded(symobj
, *dest_shndx
))
6109 = symtab
->icf()->get_folded_section(symobj
, *dest_shndx
);
6110 symobj
= static_cast<Powerpc_relobj
<size
, big_endian
>*>(folded
.first
);
6111 *dest_shndx
= folded
.second
;
6113 Address sec_addr
= symobj
->get_output_section_offset(*dest_shndx
);
6114 gold_assert(sec_addr
!= invalid_address
);
6115 sec_addr
+= symobj
->output_section(*dest_shndx
)->address();
6116 value
= sec_addr
+ sec_off
;
6121 // Perform a relocation.
6123 template<int size
, bool big_endian
>
6125 Target_powerpc
<size
, big_endian
>::Relocate::relocate(
6126 const Relocate_info
<size
, big_endian
>* relinfo
,
6127 Target_powerpc
* target
,
6130 const elfcpp::Rela
<size
, big_endian
>& rela
,
6131 unsigned int r_type
,
6132 const Sized_symbol
<size
>* gsym
,
6133 const Symbol_value
<size
>* psymval
,
6134 unsigned char* view
,
6136 section_size_type view_size
)
6138 switch (this->maybe_skip_tls_get_addr_call(r_type
, gsym
))
6140 case Track_tls::NOT_EXPECTED
:
6141 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
6142 _("__tls_get_addr call lacks marker reloc"));
6144 case Track_tls::EXPECTED
:
6145 // We have already complained.
6147 case Track_tls::SKIP
:
6149 case Track_tls::NORMAL
:
6153 typedef Powerpc_relocate_functions
<size
, big_endian
> Reloc
;
6154 typedef typename
elfcpp::Swap
<32, big_endian
>::Valtype Insn
;
6155 Powerpc_relobj
<size
, big_endian
>* const object
6156 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(relinfo
->object
);
6158 bool has_plt_value
= false;
6159 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
6161 ? use_plt_offset
<size
>(gsym
, Scan::get_reference_flags(r_type
))
6162 : object
->local_has_plt_offset(r_sym
))
6164 Stub_table
<size
, big_endian
>* stub_table
6165 = object
->stub_table(relinfo
->data_shndx
);
6166 if (stub_table
== NULL
)
6168 // This is a ref from a data section to an ifunc symbol.
6169 if (target
->stub_tables().size() != 0)
6170 stub_table
= target
->stub_tables()[0];
6172 gold_assert(stub_table
!= NULL
);
6175 off
= stub_table
->find_plt_call_entry(object
, gsym
, r_type
,
6176 rela
.get_r_addend());
6178 off
= stub_table
->find_plt_call_entry(object
, r_sym
, r_type
,
6179 rela
.get_r_addend());
6180 gold_assert(off
!= invalid_address
);
6181 value
= stub_table
->stub_address() + off
;
6182 has_plt_value
= true;
6185 if (r_type
== elfcpp::R_POWERPC_GOT16
6186 || r_type
== elfcpp::R_POWERPC_GOT16_LO
6187 || r_type
== elfcpp::R_POWERPC_GOT16_HI
6188 || r_type
== elfcpp::R_POWERPC_GOT16_HA
6189 || r_type
== elfcpp::R_PPC64_GOT16_DS
6190 || r_type
== elfcpp::R_PPC64_GOT16_LO_DS
)
6194 gold_assert(gsym
->has_got_offset(GOT_TYPE_STANDARD
));
6195 value
= gsym
->got_offset(GOT_TYPE_STANDARD
);
6199 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
6200 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_STANDARD
));
6201 value
= object
->local_got_offset(r_sym
, GOT_TYPE_STANDARD
);
6203 value
-= target
->got_section()->got_base_offset(object
);
6205 else if (r_type
== elfcpp::R_PPC64_TOC
)
6207 value
= (target
->got_section()->output_section()->address()
6208 + object
->toc_base_offset());
6210 else if (gsym
!= NULL
6211 && (r_type
== elfcpp::R_POWERPC_REL24
6212 || r_type
== elfcpp::R_PPC_PLTREL24
)
6217 typedef typename
elfcpp::Swap
<32, big_endian
>::Valtype Valtype
;
6218 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
6219 bool can_plt_call
= false;
6220 if (rela
.get_r_offset() + 8 <= view_size
)
6222 Valtype insn
= elfcpp::Swap
<32, big_endian
>::readval(wv
);
6223 Valtype insn2
= elfcpp::Swap
<32, big_endian
>::readval(wv
+ 1);
6226 || insn2
== cror_15_15_15
|| insn2
== cror_31_31_31
))
6228 elfcpp::Swap
<32, big_endian
>::writeval(wv
+ 1, ld_2_1
+ 40);
6229 can_plt_call
= true;
6234 // If we don't have a branch and link followed by a nop,
6235 // we can't go via the plt because there is no place to
6236 // put a toc restoring instruction.
6237 // Unless we know we won't be returning.
6238 if (strcmp(gsym
->name(), "__libc_start_main") == 0)
6239 can_plt_call
= true;
6243 // This is not an error in one special case: A self
6244 // call. It isn't possible to cheaply verify we have
6245 // such a call so just check for a call to the same
6248 Address code
= value
;
6249 if (gsym
->source() == Symbol::FROM_OBJECT
6250 && gsym
->object() == object
)
6252 Address addend
= rela
.get_r_addend();
6253 unsigned int dest_shndx
;
6254 Address opdent
= psymval
->value(object
, addend
);
6255 code
= target
->symval_for_branch(relinfo
->symtab
, opdent
,
6256 gsym
, object
, &dest_shndx
);
6258 if (dest_shndx
== 0)
6259 dest_shndx
= gsym
->shndx(&is_ordinary
);
6260 ok
= dest_shndx
== relinfo
->data_shndx
;
6264 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
6265 _("call lacks nop, can't restore toc; "
6266 "recompile with -fPIC"));
6272 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
6273 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
6274 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HI
6275 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HA
)
6277 // First instruction of a global dynamic sequence, arg setup insn.
6278 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
6279 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
6280 enum Got_type got_type
= GOT_TYPE_STANDARD
;
6281 if (tls_type
== tls::TLSOPT_NONE
)
6282 got_type
= GOT_TYPE_TLSGD
;
6283 else if (tls_type
== tls::TLSOPT_TO_IE
)
6284 got_type
= GOT_TYPE_TPREL
;
6285 if (got_type
!= GOT_TYPE_STANDARD
)
6289 gold_assert(gsym
->has_got_offset(got_type
));
6290 value
= gsym
->got_offset(got_type
);
6294 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
6295 gold_assert(object
->local_has_got_offset(r_sym
, got_type
));
6296 value
= object
->local_got_offset(r_sym
, got_type
);
6298 value
-= target
->got_section()->got_base_offset(object
);
6300 if (tls_type
== tls::TLSOPT_TO_IE
)
6302 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
6303 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
6305 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6306 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
6307 insn
&= (1 << 26) - (1 << 16); // extract rt,ra from addi
6309 insn
|= 32 << 26; // lwz
6311 insn
|= 58 << 26; // ld
6312 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6314 r_type
+= (elfcpp::R_POWERPC_GOT_TPREL16
6315 - elfcpp::R_POWERPC_GOT_TLSGD16
);
6317 else if (tls_type
== tls::TLSOPT_TO_LE
)
6319 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
6320 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
6322 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6323 Insn insn
= addis_3_13
;
6326 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6327 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
6328 value
= psymval
->value(object
, rela
.get_r_addend());
6332 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6334 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6335 r_type
= elfcpp::R_POWERPC_NONE
;
6339 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
6340 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
6341 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HI
6342 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HA
)
6344 // First instruction of a local dynamic sequence, arg setup insn.
6345 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
6346 if (tls_type
== tls::TLSOPT_NONE
)
6348 value
= target
->tlsld_got_offset();
6349 value
-= target
->got_section()->got_base_offset(object
);
6353 gold_assert(tls_type
== tls::TLSOPT_TO_LE
);
6354 if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
6355 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
)
6357 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6358 Insn insn
= addis_3_13
;
6361 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6362 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
6367 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6369 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6370 r_type
= elfcpp::R_POWERPC_NONE
;
6374 else if (r_type
== elfcpp::R_POWERPC_GOT_DTPREL16
6375 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_LO
6376 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_HI
6377 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_HA
)
6379 // Accesses relative to a local dynamic sequence address,
6380 // no optimisation here.
6383 gold_assert(gsym
->has_got_offset(GOT_TYPE_DTPREL
));
6384 value
= gsym
->got_offset(GOT_TYPE_DTPREL
);
6388 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
6389 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_DTPREL
));
6390 value
= object
->local_got_offset(r_sym
, GOT_TYPE_DTPREL
);
6392 value
-= target
->got_section()->got_base_offset(object
);
6394 else if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
6395 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
6396 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HI
6397 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HA
)
6399 // First instruction of initial exec sequence.
6400 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
6401 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
6402 if (tls_type
== tls::TLSOPT_NONE
)
6406 gold_assert(gsym
->has_got_offset(GOT_TYPE_TPREL
));
6407 value
= gsym
->got_offset(GOT_TYPE_TPREL
);
6411 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
6412 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_TPREL
));
6413 value
= object
->local_got_offset(r_sym
, GOT_TYPE_TPREL
);
6415 value
-= target
->got_section()->got_base_offset(object
);
6419 gold_assert(tls_type
== tls::TLSOPT_TO_LE
);
6420 if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
6421 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
)
6423 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6424 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
6425 insn
&= (1 << 26) - (1 << 21); // extract rt from ld
6430 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6431 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
6432 value
= psymval
->value(object
, rela
.get_r_addend());
6436 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6438 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6439 r_type
= elfcpp::R_POWERPC_NONE
;
6443 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
6444 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
6446 // Second instruction of a global dynamic sequence,
6447 // the __tls_get_addr call
6448 this->expect_tls_get_addr_call(relinfo
, relnum
, rela
.get_r_offset());
6449 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
6450 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
6451 if (tls_type
!= tls::TLSOPT_NONE
)
6453 if (tls_type
== tls::TLSOPT_TO_IE
)
6455 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
6456 Insn insn
= add_3_3_13
;
6459 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6460 r_type
= elfcpp::R_POWERPC_NONE
;
6464 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
6465 Insn insn
= addi_3_3
;
6466 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6467 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
6468 view
+= 2 * big_endian
;
6469 value
= psymval
->value(object
, rela
.get_r_addend());
6471 this->skip_next_tls_get_addr_call();
6474 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
6475 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
6477 // Second instruction of a local dynamic sequence,
6478 // the __tls_get_addr call
6479 this->expect_tls_get_addr_call(relinfo
, relnum
, rela
.get_r_offset());
6480 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
6481 if (tls_type
== tls::TLSOPT_TO_LE
)
6483 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
6484 Insn insn
= addi_3_3
;
6485 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6486 this->skip_next_tls_get_addr_call();
6487 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
6488 view
+= 2 * big_endian
;
6492 else if (r_type
== elfcpp::R_POWERPC_TLS
)
6494 // Second instruction of an initial exec sequence
6495 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
6496 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
6497 if (tls_type
== tls::TLSOPT_TO_LE
)
6499 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
6500 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
6501 unsigned int reg
= size
== 32 ? 2 : 13;
6502 insn
= at_tls_transform(insn
, reg
);
6503 gold_assert(insn
!= 0);
6504 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6505 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
6506 view
+= 2 * big_endian
;
6507 value
= psymval
->value(object
, rela
.get_r_addend());
6510 else if (!has_plt_value
)
6513 unsigned int dest_shndx
;
6514 if (r_type
!= elfcpp::R_PPC_PLTREL24
)
6515 addend
= rela
.get_r_addend();
6516 value
= psymval
->value(object
, addend
);
6517 if (size
== 64 && is_branch_reloc(r_type
))
6518 value
= target
->symval_for_branch(relinfo
->symtab
, value
,
6519 gsym
, object
, &dest_shndx
);
6520 unsigned int max_branch_offset
= 0;
6521 if (r_type
== elfcpp::R_POWERPC_REL24
6522 || r_type
== elfcpp::R_PPC_PLTREL24
6523 || r_type
== elfcpp::R_PPC_LOCAL24PC
)
6524 max_branch_offset
= 1 << 25;
6525 else if (r_type
== elfcpp::R_POWERPC_REL14
6526 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
6527 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
)
6528 max_branch_offset
= 1 << 15;
6529 if (max_branch_offset
!= 0
6530 && value
- address
+ max_branch_offset
>= 2 * max_branch_offset
)
6532 Stub_table
<size
, big_endian
>* stub_table
6533 = object
->stub_table(relinfo
->data_shndx
);
6534 gold_assert(stub_table
!= NULL
);
6535 Address off
= stub_table
->find_long_branch_entry(object
, value
);
6536 if (off
!= invalid_address
)
6537 value
= stub_table
->stub_address() + stub_table
->plt_size() + off
;
6543 case elfcpp::R_PPC64_REL64
:
6544 case elfcpp::R_POWERPC_REL32
:
6545 case elfcpp::R_POWERPC_REL24
:
6546 case elfcpp::R_PPC_PLTREL24
:
6547 case elfcpp::R_PPC_LOCAL24PC
:
6548 case elfcpp::R_POWERPC_REL16
:
6549 case elfcpp::R_POWERPC_REL16_LO
:
6550 case elfcpp::R_POWERPC_REL16_HI
:
6551 case elfcpp::R_POWERPC_REL16_HA
:
6552 case elfcpp::R_POWERPC_REL14
:
6553 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
6554 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
6558 case elfcpp::R_PPC64_TOC16
:
6559 case elfcpp::R_PPC64_TOC16_LO
:
6560 case elfcpp::R_PPC64_TOC16_HI
:
6561 case elfcpp::R_PPC64_TOC16_HA
:
6562 case elfcpp::R_PPC64_TOC16_DS
:
6563 case elfcpp::R_PPC64_TOC16_LO_DS
:
6564 // Subtract the TOC base address.
6565 value
-= (target
->got_section()->output_section()->address()
6566 + object
->toc_base_offset());
6569 case elfcpp::R_POWERPC_SECTOFF
:
6570 case elfcpp::R_POWERPC_SECTOFF_LO
:
6571 case elfcpp::R_POWERPC_SECTOFF_HI
:
6572 case elfcpp::R_POWERPC_SECTOFF_HA
:
6573 case elfcpp::R_PPC64_SECTOFF_DS
:
6574 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
6576 value
-= os
->address();
6579 case elfcpp::R_PPC64_TPREL16_DS
:
6580 case elfcpp::R_PPC64_TPREL16_LO_DS
:
6582 // R_PPC_TLSGD and R_PPC_TLSLD
6584 case elfcpp::R_POWERPC_TPREL16
:
6585 case elfcpp::R_POWERPC_TPREL16_LO
:
6586 case elfcpp::R_POWERPC_TPREL16_HI
:
6587 case elfcpp::R_POWERPC_TPREL16_HA
:
6588 case elfcpp::R_POWERPC_TPREL
:
6589 case elfcpp::R_PPC64_TPREL16_HIGHER
:
6590 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
6591 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
6592 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
6593 // tls symbol values are relative to tls_segment()->vaddr()
6597 case elfcpp::R_PPC64_DTPREL16_DS
:
6598 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
6599 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
6600 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
6601 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
6602 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
6604 // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO
6605 // R_PPC_EMB_NADDR16_HI, R_PPC_EMB_NADDR16_HA, R_PPC_EMB_SDAI16
6607 case elfcpp::R_POWERPC_DTPREL16
:
6608 case elfcpp::R_POWERPC_DTPREL16_LO
:
6609 case elfcpp::R_POWERPC_DTPREL16_HI
:
6610 case elfcpp::R_POWERPC_DTPREL16_HA
:
6611 case elfcpp::R_POWERPC_DTPREL
:
6612 // tls symbol values are relative to tls_segment()->vaddr()
6613 value
-= dtp_offset
;
6620 Insn branch_bit
= 0;
6623 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
6624 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
6625 branch_bit
= 1 << 21;
6626 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
6627 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
6629 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
6630 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
6633 if (this->is_isa_v2
)
6635 // Set 'a' bit. This is 0b00010 in BO field for branch
6636 // on CR(BI) insns (BO == 001at or 011at), and 0b01000
6637 // for branch on CTR insns (BO == 1a00t or 1a01t).
6638 if ((insn
& (0x14 << 21)) == (0x04 << 21))
6640 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
6647 // Invert 'y' bit if not the default.
6648 if (static_cast<Signed_address
>(value
) < 0)
6651 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6661 // Multi-instruction sequences that access the TOC can be
6662 // optimized, eg. addis ra,r2,0; addi rb,ra,x;
6663 // to nop; addi rb,r2,x;
6669 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
6670 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
6671 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
6672 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
6673 case elfcpp::R_POWERPC_GOT16_HA
:
6674 case elfcpp::R_PPC64_TOC16_HA
:
6675 if (parameters
->options().toc_optimize())
6677 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6678 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
6679 if ((insn
& ((0x3f << 26) | 0x1f << 16))
6680 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
6681 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
6682 _("toc optimization is not supported "
6683 "for %#08x instruction"), insn
);
6684 else if (value
+ 0x8000 < 0x10000)
6686 elfcpp::Swap
<32, big_endian
>::writeval(iview
, nop
);
6692 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
6693 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
6694 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
6695 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
6696 case elfcpp::R_POWERPC_GOT16_LO
:
6697 case elfcpp::R_PPC64_GOT16_LO_DS
:
6698 case elfcpp::R_PPC64_TOC16_LO
:
6699 case elfcpp::R_PPC64_TOC16_LO_DS
:
6700 if (parameters
->options().toc_optimize())
6702 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6703 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
6704 if (!ok_lo_toc_insn(insn
))
6705 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
6706 _("toc optimization is not supported "
6707 "for %#08x instruction"), insn
);
6708 else if (value
+ 0x8000 < 0x10000)
6710 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
6712 // Transform addic to addi when we change reg.
6713 insn
&= ~((0x3f << 26) | (0x1f << 16));
6714 insn
|= (14u << 26) | (2 << 16);
6718 insn
&= ~(0x1f << 16);
6721 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6728 typename
Reloc::Overflow_check overflow
= Reloc::CHECK_NONE
;
6731 case elfcpp::R_POWERPC_ADDR32
:
6732 case elfcpp::R_POWERPC_UADDR32
:
6734 overflow
= Reloc::CHECK_BITFIELD
;
6737 case elfcpp::R_POWERPC_REL32
:
6739 overflow
= Reloc::CHECK_SIGNED
;
6742 case elfcpp::R_POWERPC_ADDR24
:
6743 case elfcpp::R_POWERPC_ADDR16
:
6744 case elfcpp::R_POWERPC_UADDR16
:
6745 case elfcpp::R_PPC64_ADDR16_DS
:
6746 case elfcpp::R_POWERPC_ADDR14
:
6747 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
6748 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
6749 overflow
= Reloc::CHECK_BITFIELD
;
6752 case elfcpp::R_POWERPC_REL24
:
6753 case elfcpp::R_PPC_PLTREL24
:
6754 case elfcpp::R_PPC_LOCAL24PC
:
6755 case elfcpp::R_POWERPC_REL16
:
6756 case elfcpp::R_PPC64_TOC16
:
6757 case elfcpp::R_POWERPC_GOT16
:
6758 case elfcpp::R_POWERPC_SECTOFF
:
6759 case elfcpp::R_POWERPC_TPREL16
:
6760 case elfcpp::R_POWERPC_DTPREL16
:
6761 case elfcpp::R_PPC64_TPREL16_DS
:
6762 case elfcpp::R_PPC64_DTPREL16_DS
:
6763 case elfcpp::R_PPC64_TOC16_DS
:
6764 case elfcpp::R_PPC64_GOT16_DS
:
6765 case elfcpp::R_PPC64_SECTOFF_DS
:
6766 case elfcpp::R_POWERPC_REL14
:
6767 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
6768 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
6769 case elfcpp::R_POWERPC_GOT_TLSGD16
:
6770 case elfcpp::R_POWERPC_GOT_TLSLD16
:
6771 case elfcpp::R_POWERPC_GOT_TPREL16
:
6772 case elfcpp::R_POWERPC_GOT_DTPREL16
:
6773 overflow
= Reloc::CHECK_SIGNED
;
6777 typename Powerpc_relocate_functions
<size
, big_endian
>::Status status
6778 = Powerpc_relocate_functions
<size
, big_endian
>::STATUS_OK
;
6781 case elfcpp::R_POWERPC_NONE
:
6782 case elfcpp::R_POWERPC_TLS
:
6783 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
6784 case elfcpp::R_POWERPC_GNU_VTENTRY
:
6785 case elfcpp::R_PPC_EMB_MRKREF
:
6788 case elfcpp::R_PPC64_ADDR64
:
6789 case elfcpp::R_PPC64_REL64
:
6790 case elfcpp::R_PPC64_TOC
:
6791 Reloc::addr64(view
, value
);
6794 case elfcpp::R_POWERPC_TPREL
:
6795 case elfcpp::R_POWERPC_DTPREL
:
6797 Reloc::addr64(view
, value
);
6799 status
= Reloc::addr32(view
, value
, overflow
);
6802 case elfcpp::R_PPC64_UADDR64
:
6803 Reloc::addr64_u(view
, value
);
6806 case elfcpp::R_POWERPC_ADDR32
:
6807 status
= Reloc::addr32(view
, value
, overflow
);
6810 case elfcpp::R_POWERPC_REL32
:
6811 case elfcpp::R_POWERPC_UADDR32
:
6812 status
= Reloc::addr32_u(view
, value
, overflow
);
6815 case elfcpp::R_POWERPC_ADDR24
:
6816 case elfcpp::R_POWERPC_REL24
:
6817 case elfcpp::R_PPC_PLTREL24
:
6818 case elfcpp::R_PPC_LOCAL24PC
:
6819 status
= Reloc::addr24(view
, value
, overflow
);
6822 case elfcpp::R_POWERPC_GOT_DTPREL16
:
6823 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
6826 status
= Reloc::addr16_ds(view
, value
, overflow
);
6829 case elfcpp::R_POWERPC_ADDR16
:
6830 case elfcpp::R_POWERPC_REL16
:
6831 case elfcpp::R_PPC64_TOC16
:
6832 case elfcpp::R_POWERPC_GOT16
:
6833 case elfcpp::R_POWERPC_SECTOFF
:
6834 case elfcpp::R_POWERPC_TPREL16
:
6835 case elfcpp::R_POWERPC_DTPREL16
:
6836 case elfcpp::R_POWERPC_GOT_TLSGD16
:
6837 case elfcpp::R_POWERPC_GOT_TLSLD16
:
6838 case elfcpp::R_POWERPC_GOT_TPREL16
:
6839 case elfcpp::R_POWERPC_ADDR16_LO
:
6840 case elfcpp::R_POWERPC_REL16_LO
:
6841 case elfcpp::R_PPC64_TOC16_LO
:
6842 case elfcpp::R_POWERPC_GOT16_LO
:
6843 case elfcpp::R_POWERPC_SECTOFF_LO
:
6844 case elfcpp::R_POWERPC_TPREL16_LO
:
6845 case elfcpp::R_POWERPC_DTPREL16_LO
:
6846 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
6847 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
6848 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
6849 status
= Reloc::addr16(view
, value
, overflow
);
6852 case elfcpp::R_POWERPC_UADDR16
:
6853 status
= Reloc::addr16_u(view
, value
, overflow
);
6856 case elfcpp::R_POWERPC_ADDR16_HI
:
6857 case elfcpp::R_POWERPC_REL16_HI
:
6858 case elfcpp::R_PPC64_TOC16_HI
:
6859 case elfcpp::R_POWERPC_GOT16_HI
:
6860 case elfcpp::R_POWERPC_SECTOFF_HI
:
6861 case elfcpp::R_POWERPC_TPREL16_HI
:
6862 case elfcpp::R_POWERPC_DTPREL16_HI
:
6863 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
6864 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
6865 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
6866 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
6867 Reloc::addr16_hi(view
, value
);
6870 case elfcpp::R_POWERPC_ADDR16_HA
:
6871 case elfcpp::R_POWERPC_REL16_HA
:
6872 case elfcpp::R_PPC64_TOC16_HA
:
6873 case elfcpp::R_POWERPC_GOT16_HA
:
6874 case elfcpp::R_POWERPC_SECTOFF_HA
:
6875 case elfcpp::R_POWERPC_TPREL16_HA
:
6876 case elfcpp::R_POWERPC_DTPREL16_HA
:
6877 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
6878 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
6879 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
6880 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
6881 Reloc::addr16_ha(view
, value
);
6884 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
6886 // R_PPC_EMB_NADDR16_LO
6888 case elfcpp::R_PPC64_ADDR16_HIGHER
:
6889 case elfcpp::R_PPC64_TPREL16_HIGHER
:
6890 Reloc::addr16_hi2(view
, value
);
6893 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
6895 // R_PPC_EMB_NADDR16_HI
6897 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
6898 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
6899 Reloc::addr16_ha2(view
, value
);
6902 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
6904 // R_PPC_EMB_NADDR16_HA
6906 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
6907 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
6908 Reloc::addr16_hi3(view
, value
);
6911 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
6915 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
6916 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
6917 Reloc::addr16_ha3(view
, value
);
6920 case elfcpp::R_PPC64_DTPREL16_DS
:
6921 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
6923 // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16
6925 case elfcpp::R_PPC64_TPREL16_DS
:
6926 case elfcpp::R_PPC64_TPREL16_LO_DS
:
6928 // R_PPC_TLSGD, R_PPC_TLSLD
6930 case elfcpp::R_PPC64_ADDR16_DS
:
6931 case elfcpp::R_PPC64_ADDR16_LO_DS
:
6932 case elfcpp::R_PPC64_TOC16_DS
:
6933 case elfcpp::R_PPC64_TOC16_LO_DS
:
6934 case elfcpp::R_PPC64_GOT16_DS
:
6935 case elfcpp::R_PPC64_GOT16_LO_DS
:
6936 case elfcpp::R_PPC64_SECTOFF_DS
:
6937 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
6938 status
= Reloc::addr16_ds(view
, value
, overflow
);
6941 case elfcpp::R_POWERPC_ADDR14
:
6942 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
6943 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
6944 case elfcpp::R_POWERPC_REL14
:
6945 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
6946 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
6947 status
= Reloc::addr14(view
, value
, overflow
);
6950 case elfcpp::R_POWERPC_COPY
:
6951 case elfcpp::R_POWERPC_GLOB_DAT
:
6952 case elfcpp::R_POWERPC_JMP_SLOT
:
6953 case elfcpp::R_POWERPC_RELATIVE
:
6954 case elfcpp::R_POWERPC_DTPMOD
:
6955 case elfcpp::R_PPC64_JMP_IREL
:
6956 case elfcpp::R_POWERPC_IRELATIVE
:
6957 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
6958 _("unexpected reloc %u in object file"),
6962 case elfcpp::R_PPC_EMB_SDA21
:
6967 // R_PPC64_TOCSAVE. For the time being this can be ignored.
6971 case elfcpp::R_PPC_EMB_SDA2I16
:
6972 case elfcpp::R_PPC_EMB_SDA2REL
:
6975 // R_PPC64_TLSGD, R_PPC64_TLSLD
6978 case elfcpp::R_POWERPC_PLT32
:
6979 case elfcpp::R_POWERPC_PLTREL32
:
6980 case elfcpp::R_POWERPC_PLT16_LO
:
6981 case elfcpp::R_POWERPC_PLT16_HI
:
6982 case elfcpp::R_POWERPC_PLT16_HA
:
6983 case elfcpp::R_PPC_SDAREL16
:
6984 case elfcpp::R_POWERPC_ADDR30
:
6985 case elfcpp::R_PPC64_PLT64
:
6986 case elfcpp::R_PPC64_PLTREL64
:
6987 case elfcpp::R_PPC64_PLTGOT16
:
6988 case elfcpp::R_PPC64_PLTGOT16_LO
:
6989 case elfcpp::R_PPC64_PLTGOT16_HI
:
6990 case elfcpp::R_PPC64_PLTGOT16_HA
:
6991 case elfcpp::R_PPC64_PLT16_LO_DS
:
6992 case elfcpp::R_PPC64_PLTGOT16_DS
:
6993 case elfcpp::R_PPC64_PLTGOT16_LO_DS
:
6994 case elfcpp::R_PPC_EMB_RELSEC16
:
6995 case elfcpp::R_PPC_EMB_RELST_LO
:
6996 case elfcpp::R_PPC_EMB_RELST_HI
:
6997 case elfcpp::R_PPC_EMB_RELST_HA
:
6998 case elfcpp::R_PPC_EMB_BIT_FLD
:
6999 case elfcpp::R_PPC_EMB_RELSDA
:
7000 case elfcpp::R_PPC_TOC16
:
7003 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
7004 _("unsupported reloc %u"),
7008 if (status
!= Powerpc_relocate_functions
<size
, big_endian
>::STATUS_OK
)
7009 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
7010 _("relocation overflow"));
7015 // Relocate section data.
7017 template<int size
, bool big_endian
>
7019 Target_powerpc
<size
, big_endian
>::relocate_section(
7020 const Relocate_info
<size
, big_endian
>* relinfo
,
7021 unsigned int sh_type
,
7022 const unsigned char* prelocs
,
7024 Output_section
* output_section
,
7025 bool needs_special_offset_handling
,
7026 unsigned char* view
,
7028 section_size_type view_size
,
7029 const Reloc_symbol_changes
* reloc_symbol_changes
)
7031 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
7032 typedef typename Target_powerpc
<size
, big_endian
>::Relocate Powerpc_relocate
;
7033 typedef typename Target_powerpc
<size
, big_endian
>::Relocate_comdat_behavior
7034 Powerpc_comdat_behavior
;
7036 gold_assert(sh_type
== elfcpp::SHT_RELA
);
7038 gold::relocate_section
<size
, big_endian
, Powerpc
, elfcpp::SHT_RELA
,
7039 Powerpc_relocate
, Powerpc_comdat_behavior
>(
7045 needs_special_offset_handling
,
7049 reloc_symbol_changes
);
7052 class Powerpc_scan_relocatable_reloc
7055 // Return the strategy to use for a local symbol which is not a
7056 // section symbol, given the relocation type.
7057 inline Relocatable_relocs::Reloc_strategy
7058 local_non_section_strategy(unsigned int r_type
, Relobj
*, unsigned int r_sym
)
7060 if (r_type
== 0 && r_sym
== 0)
7061 return Relocatable_relocs::RELOC_DISCARD
;
7062 return Relocatable_relocs::RELOC_COPY
;
7065 // Return the strategy to use for a local symbol which is a section
7066 // symbol, given the relocation type.
7067 inline Relocatable_relocs::Reloc_strategy
7068 local_section_strategy(unsigned int, Relobj
*)
7070 return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
;
7073 // Return the strategy to use for a global symbol, given the
7074 // relocation type, the object, and the symbol index.
7075 inline Relocatable_relocs::Reloc_strategy
7076 global_strategy(unsigned int r_type
, Relobj
*, unsigned int)
7078 if (r_type
== elfcpp::R_PPC_PLTREL24
)
7079 return Relocatable_relocs::RELOC_SPECIAL
;
7080 return Relocatable_relocs::RELOC_COPY
;
7084 // Scan the relocs during a relocatable link.
7086 template<int size
, bool big_endian
>
7088 Target_powerpc
<size
, big_endian
>::scan_relocatable_relocs(
7089 Symbol_table
* symtab
,
7091 Sized_relobj_file
<size
, big_endian
>* object
,
7092 unsigned int data_shndx
,
7093 unsigned int sh_type
,
7094 const unsigned char* prelocs
,
7096 Output_section
* output_section
,
7097 bool needs_special_offset_handling
,
7098 size_t local_symbol_count
,
7099 const unsigned char* plocal_symbols
,
7100 Relocatable_relocs
* rr
)
7102 gold_assert(sh_type
== elfcpp::SHT_RELA
);
7104 gold::scan_relocatable_relocs
<size
, big_endian
, elfcpp::SHT_RELA
,
7105 Powerpc_scan_relocatable_reloc
>(
7113 needs_special_offset_handling
,
7119 // Emit relocations for a section.
7120 // This is a modified version of the function by the same name in
7121 // target-reloc.h. Using relocate_special_relocatable for
7122 // R_PPC_PLTREL24 would require duplication of the entire body of the
7123 // loop, so we may as well duplicate the whole thing.
7125 template<int size
, bool big_endian
>
7127 Target_powerpc
<size
, big_endian
>::relocate_relocs(
7128 const Relocate_info
<size
, big_endian
>* relinfo
,
7129 unsigned int sh_type
,
7130 const unsigned char* prelocs
,
7132 Output_section
* output_section
,
7133 typename
elfcpp::Elf_types
<size
>::Elf_Off offset_in_output_section
,
7134 const Relocatable_relocs
* rr
,
7136 Address view_address
,
7138 unsigned char* reloc_view
,
7139 section_size_type reloc_view_size
)
7141 gold_assert(sh_type
== elfcpp::SHT_RELA
);
7143 typedef typename Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::Reloc
7145 typedef typename Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::Reloc_write
7147 const int reloc_size
7148 = Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
7150 Powerpc_relobj
<size
, big_endian
>* const object
7151 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(relinfo
->object
);
7152 const unsigned int local_count
= object
->local_symbol_count();
7153 unsigned int got2_shndx
= object
->got2_shndx();
7154 Address got2_addend
= 0;
7155 if (got2_shndx
!= 0)
7157 got2_addend
= object
->get_output_section_offset(got2_shndx
);
7158 gold_assert(got2_addend
!= invalid_address
);
7161 unsigned char* pwrite
= reloc_view
;
7162 bool zap_next
= false;
7163 for (size_t i
= 0; i
< reloc_count
; ++i
, prelocs
+= reloc_size
)
7165 Relocatable_relocs::Reloc_strategy strategy
= rr
->strategy(i
);
7166 if (strategy
== Relocatable_relocs::RELOC_DISCARD
)
7169 Reltype
reloc(prelocs
);
7170 Reltype_write
reloc_write(pwrite
);
7172 Address offset
= reloc
.get_r_offset();
7173 typename
elfcpp::Elf_types
<size
>::Elf_WXword r_info
= reloc
.get_r_info();
7174 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(r_info
);
7175 unsigned int r_type
= elfcpp::elf_r_type
<size
>(r_info
);
7176 const unsigned int orig_r_sym
= r_sym
;
7177 typename
elfcpp::Elf_types
<size
>::Elf_Swxword addend
7178 = reloc
.get_r_addend();
7179 const Symbol
* gsym
= NULL
;
7183 // We could arrange to discard these and other relocs for
7184 // tls optimised sequences in the strategy methods, but for
7185 // now do as BFD ld does.
7186 r_type
= elfcpp::R_POWERPC_NONE
;
7190 // Get the new symbol index.
7191 if (r_sym
< local_count
)
7195 case Relocatable_relocs::RELOC_COPY
:
7196 case Relocatable_relocs::RELOC_SPECIAL
:
7199 r_sym
= object
->symtab_index(r_sym
);
7200 gold_assert(r_sym
!= -1U);
7204 case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
:
7206 // We are adjusting a section symbol. We need to find
7207 // the symbol table index of the section symbol for
7208 // the output section corresponding to input section
7209 // in which this symbol is defined.
7210 gold_assert(r_sym
< local_count
);
7212 unsigned int shndx
=
7213 object
->local_symbol_input_shndx(r_sym
, &is_ordinary
);
7214 gold_assert(is_ordinary
);
7215 Output_section
* os
= object
->output_section(shndx
);
7216 gold_assert(os
!= NULL
);
7217 gold_assert(os
->needs_symtab_index());
7218 r_sym
= os
->symtab_index();
7228 gsym
= object
->global_symbol(r_sym
);
7229 gold_assert(gsym
!= NULL
);
7230 if (gsym
->is_forwarder())
7231 gsym
= relinfo
->symtab
->resolve_forwards(gsym
);
7233 gold_assert(gsym
->has_symtab_index());
7234 r_sym
= gsym
->symtab_index();
7237 // Get the new offset--the location in the output section where
7238 // this relocation should be applied.
7239 if (static_cast<Address
>(offset_in_output_section
) != invalid_address
)
7240 offset
+= offset_in_output_section
;
7243 section_offset_type sot_offset
=
7244 convert_types
<section_offset_type
, Address
>(offset
);
7245 section_offset_type new_sot_offset
=
7246 output_section
->output_offset(object
, relinfo
->data_shndx
,
7248 gold_assert(new_sot_offset
!= -1);
7249 offset
= new_sot_offset
;
7252 // In an object file, r_offset is an offset within the section.
7253 // In an executable or dynamic object, generated by
7254 // --emit-relocs, r_offset is an absolute address.
7255 if (!parameters
->options().relocatable())
7257 offset
+= view_address
;
7258 if (static_cast<Address
>(offset_in_output_section
) != invalid_address
)
7259 offset
-= offset_in_output_section
;
7262 // Handle the reloc addend based on the strategy.
7263 if (strategy
== Relocatable_relocs::RELOC_COPY
)
7265 else if (strategy
== Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
)
7267 const Symbol_value
<size
>* psymval
= object
->local_symbol(orig_r_sym
);
7268 addend
= psymval
->value(object
, addend
);
7270 else if (strategy
== Relocatable_relocs::RELOC_SPECIAL
)
7272 if (addend
>= 32768)
7273 addend
+= got2_addend
;
7278 if (!parameters
->options().relocatable())
7280 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
7281 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
7282 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HI
7283 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HA
)
7285 // First instruction of a global dynamic sequence,
7287 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
7288 switch (this->optimize_tls_gd(final
))
7290 case tls::TLSOPT_TO_IE
:
7291 r_type
+= (elfcpp::R_POWERPC_GOT_TPREL16
7292 - elfcpp::R_POWERPC_GOT_TLSGD16
);
7294 case tls::TLSOPT_TO_LE
:
7295 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
7296 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
7297 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
7300 r_type
= elfcpp::R_POWERPC_NONE
;
7301 offset
-= 2 * big_endian
;
7308 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
7309 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
7310 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HI
7311 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HA
)
7313 // First instruction of a local dynamic sequence,
7315 if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE
)
7317 if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
7318 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
)
7320 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
7321 const Output_section
* os
= relinfo
->layout
->tls_segment()
7323 gold_assert(os
!= NULL
);
7324 gold_assert(os
->needs_symtab_index());
7325 r_sym
= os
->symtab_index();
7326 addend
= dtp_offset
;
7330 r_type
= elfcpp::R_POWERPC_NONE
;
7331 offset
-= 2 * big_endian
;
7335 else if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
7336 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
7337 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HI
7338 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HA
)
7340 // First instruction of initial exec sequence.
7341 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
7342 if (this->optimize_tls_ie(final
) == tls::TLSOPT_TO_LE
)
7344 if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
7345 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
)
7346 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
7349 r_type
= elfcpp::R_POWERPC_NONE
;
7350 offset
-= 2 * big_endian
;
7354 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
7355 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
7357 // Second instruction of a global dynamic sequence,
7358 // the __tls_get_addr call
7359 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
7360 switch (this->optimize_tls_gd(final
))
7362 case tls::TLSOPT_TO_IE
:
7363 r_type
= elfcpp::R_POWERPC_NONE
;
7366 case tls::TLSOPT_TO_LE
:
7367 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
7368 offset
+= 2 * big_endian
;
7375 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
7376 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
7378 // Second instruction of a local dynamic sequence,
7379 // the __tls_get_addr call
7380 if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE
)
7382 const Output_section
* os
= relinfo
->layout
->tls_segment()
7384 gold_assert(os
!= NULL
);
7385 gold_assert(os
->needs_symtab_index());
7386 r_sym
= os
->symtab_index();
7387 addend
= dtp_offset
;
7388 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
7389 offset
+= 2 * big_endian
;
7393 else if (r_type
== elfcpp::R_POWERPC_TLS
)
7395 // Second instruction of an initial exec sequence
7396 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
7397 if (this->optimize_tls_ie(final
) == tls::TLSOPT_TO_LE
)
7399 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
7400 offset
+= 2 * big_endian
;
7405 reloc_write
.put_r_offset(offset
);
7406 reloc_write
.put_r_info(elfcpp::elf_r_info
<size
>(r_sym
, r_type
));
7407 reloc_write
.put_r_addend(addend
);
7409 pwrite
+= reloc_size
;
7412 gold_assert(static_cast<section_size_type
>(pwrite
- reloc_view
)
7413 == reloc_view_size
);
7416 // Return the value to use for a dynamic symbol which requires special
7417 // treatment. This is how we support equality comparisons of function
7418 // pointers across shared library boundaries, as described in the
7419 // processor specific ABI supplement.
7421 template<int size
, bool big_endian
>
7423 Target_powerpc
<size
, big_endian
>::do_dynsym_value(const Symbol
* gsym
) const
7427 gold_assert(gsym
->is_from_dynobj() && gsym
->has_plt_offset());
7428 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
7429 p
!= this->stub_tables_
.end();
7432 Address off
= (*p
)->find_plt_call_entry(gsym
);
7433 if (off
!= invalid_address
)
7434 return (*p
)->stub_address() + off
;
7440 // Return the PLT address to use for a local symbol.
7441 template<int size
, bool big_endian
>
7443 Target_powerpc
<size
, big_endian
>::do_plt_address_for_local(
7444 const Relobj
* object
,
7445 unsigned int symndx
) const
7449 const Sized_relobj
<size
, big_endian
>* relobj
7450 = static_cast<const Sized_relobj
<size
, big_endian
>*>(object
);
7451 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
7452 p
!= this->stub_tables_
.end();
7455 Address off
= (*p
)->find_plt_call_entry(relobj
->sized_relobj(),
7457 if (off
!= invalid_address
)
7458 return (*p
)->stub_address() + off
;
7464 // Return the PLT address to use for a global symbol.
7465 template<int size
, bool big_endian
>
7467 Target_powerpc
<size
, big_endian
>::do_plt_address_for_global(
7468 const Symbol
* gsym
) const
7472 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
7473 p
!= this->stub_tables_
.end();
7476 Address off
= (*p
)->find_plt_call_entry(gsym
);
7477 if (off
!= invalid_address
)
7478 return (*p
)->stub_address() + off
;
7484 // Return the offset to use for the GOT_INDX'th got entry which is
7485 // for a local tls symbol specified by OBJECT, SYMNDX.
7486 template<int size
, bool big_endian
>
7488 Target_powerpc
<size
, big_endian
>::do_tls_offset_for_local(
7489 const Relobj
* object
,
7490 unsigned int symndx
,
7491 unsigned int got_indx
) const
7493 const Powerpc_relobj
<size
, big_endian
>* ppc_object
7494 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>(object
);
7495 if (ppc_object
->local_symbol(symndx
)->is_tls_symbol())
7497 for (Got_type got_type
= GOT_TYPE_TLSGD
;
7498 got_type
<= GOT_TYPE_TPREL
;
7499 got_type
= Got_type(got_type
+ 1))
7500 if (ppc_object
->local_has_got_offset(symndx
, got_type
))
7502 unsigned int off
= ppc_object
->local_got_offset(symndx
, got_type
);
7503 if (got_type
== GOT_TYPE_TLSGD
)
7505 if (off
== got_indx
* (size
/ 8))
7507 if (got_type
== GOT_TYPE_TPREL
)
7517 // Return the offset to use for the GOT_INDX'th got entry which is
7518 // for global tls symbol GSYM.
7519 template<int size
, bool big_endian
>
7521 Target_powerpc
<size
, big_endian
>::do_tls_offset_for_global(
7523 unsigned int got_indx
) const
7525 if (gsym
->type() == elfcpp::STT_TLS
)
7527 for (Got_type got_type
= GOT_TYPE_TLSGD
;
7528 got_type
<= GOT_TYPE_TPREL
;
7529 got_type
= Got_type(got_type
+ 1))
7530 if (gsym
->has_got_offset(got_type
))
7532 unsigned int off
= gsym
->got_offset(got_type
);
7533 if (got_type
== GOT_TYPE_TLSGD
)
7535 if (off
== got_indx
* (size
/ 8))
7537 if (got_type
== GOT_TYPE_TPREL
)
7547 // The selector for powerpc object files.
7549 template<int size
, bool big_endian
>
7550 class Target_selector_powerpc
: public Target_selector
7553 Target_selector_powerpc()
7554 : Target_selector(size
== 64 ? elfcpp::EM_PPC64
: elfcpp::EM_PPC
,
7557 ? (big_endian
? "elf64-powerpc" : "elf64-powerpcle")
7558 : (big_endian
? "elf32-powerpc" : "elf32-powerpcle")),
7560 ? (big_endian
? "elf64ppc" : "elf64lppc")
7561 : (big_endian
? "elf32ppc" : "elf32lppc")))
7565 do_instantiate_target()
7566 { return new Target_powerpc
<size
, big_endian
>(); }
7569 Target_selector_powerpc
<32, true> target_selector_ppc32
;
7570 Target_selector_powerpc
<32, false> target_selector_ppc32le
;
7571 Target_selector_powerpc
<64, true> target_selector_ppc64
;
7572 Target_selector_powerpc
<64, false> target_selector_ppc64le
;
7574 // Instantiate these constants for -O0
7575 template<int size
, bool big_endian
>
7576 const int Output_data_glink
<size
, big_endian
>::pltresolve_size
;
7577 template<int size
, bool big_endian
>
7578 const typename Stub_table
<size
, big_endian
>::Address
7579 Stub_table
<size
, big_endian
>::invalid_address
;
7580 template<int size
, bool big_endian
>
7581 const typename Target_powerpc
<size
, big_endian
>::Address
7582 Target_powerpc
<size
, big_endian
>::invalid_address
;
7584 } // End anonymous namespace.