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
>
66 is_branch_reloc(unsigned int r_type
);
68 template<int size
, bool big_endian
>
69 class Powerpc_relobj
: public Sized_relobj_file
<size
, big_endian
>
72 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
73 typedef Unordered_set
<Section_id
, Section_id_hash
> Section_refs
;
74 typedef Unordered_map
<Address
, Section_refs
> Access_from
;
76 Powerpc_relobj(const std::string
& name
, Input_file
* input_file
, off_t offset
,
77 const typename
elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
78 : Sized_relobj_file
<size
, big_endian
>(name
, input_file
, offset
, ehdr
),
79 special_(0), has_small_toc_reloc_(false), opd_valid_(false),
80 opd_ent_(), access_from_map_(), has14_(), stub_table_()
86 // The .got2 section shndx.
91 return this->special_
;
96 // The .opd section shndx.
103 return this->special_
;
106 // Init OPD entry arrays.
108 init_opd(size_t opd_size
)
110 size_t count
= this->opd_ent_ndx(opd_size
);
111 this->opd_ent_
.resize(count
);
114 // Return section and offset of function entry for .opd + R_OFF.
116 get_opd_ent(Address r_off
, Address
* value
= NULL
) const
118 size_t ndx
= this->opd_ent_ndx(r_off
);
119 gold_assert(ndx
< this->opd_ent_
.size());
120 gold_assert(this->opd_ent_
[ndx
].shndx
!= 0);
122 *value
= this->opd_ent_
[ndx
].off
;
123 return this->opd_ent_
[ndx
].shndx
;
126 // Set section and offset of function entry for .opd + R_OFF.
128 set_opd_ent(Address r_off
, unsigned int shndx
, Address value
)
130 size_t ndx
= this->opd_ent_ndx(r_off
);
131 gold_assert(ndx
< this->opd_ent_
.size());
132 this->opd_ent_
[ndx
].shndx
= shndx
;
133 this->opd_ent_
[ndx
].off
= value
;
136 // Return discard flag for .opd + R_OFF.
138 get_opd_discard(Address r_off
) const
140 size_t ndx
= this->opd_ent_ndx(r_off
);
141 gold_assert(ndx
< this->opd_ent_
.size());
142 return this->opd_ent_
[ndx
].discard
;
145 // Set discard flag for .opd + R_OFF.
147 set_opd_discard(Address r_off
)
149 size_t ndx
= this->opd_ent_ndx(r_off
);
150 gold_assert(ndx
< this->opd_ent_
.size());
151 this->opd_ent_
[ndx
].discard
= true;
156 { return this->opd_valid_
; }
160 { this->opd_valid_
= true; }
162 // Examine .rela.opd to build info about function entry points.
164 scan_opd_relocs(size_t reloc_count
,
165 const unsigned char* prelocs
,
166 const unsigned char* plocal_syms
);
168 // Perform the Sized_relobj_file method, then set up opd info from
171 do_read_relocs(Read_relocs_data
*);
174 do_find_special_sections(Read_symbols_data
* sd
);
176 // Adjust this local symbol value. Return false if the symbol
177 // should be discarded from the output file.
179 do_adjust_local_symbol(Symbol_value
<size
>* lv
) const
181 if (size
== 64 && this->opd_shndx() != 0)
184 if (lv
->input_shndx(&is_ordinary
) != this->opd_shndx())
186 if (this->get_opd_discard(lv
->input_value()))
194 { return &this->access_from_map_
; }
196 // Add a reference from SRC_OBJ, SRC_INDX to this object's .opd
197 // section at DST_OFF.
199 add_reference(Object
* src_obj
,
200 unsigned int src_indx
,
201 typename
elfcpp::Elf_types
<size
>::Elf_Addr dst_off
)
203 Section_id
src_id(src_obj
, src_indx
);
204 this->access_from_map_
[dst_off
].insert(src_id
);
207 // Add a reference to the code section specified by the .opd entry
210 add_gc_mark(typename
elfcpp::Elf_types
<size
>::Elf_Addr dst_off
)
212 size_t ndx
= this->opd_ent_ndx(dst_off
);
213 if (ndx
>= this->opd_ent_
.size())
214 this->opd_ent_
.resize(ndx
+ 1);
215 this->opd_ent_
[ndx
].gc_mark
= true;
219 process_gc_mark(Symbol_table
* symtab
)
221 for (size_t i
= 0; i
< this->opd_ent_
.size(); i
++)
222 if (this->opd_ent_
[i
].gc_mark
)
224 unsigned int shndx
= this->opd_ent_
[i
].shndx
;
225 symtab
->gc()->worklist().push(Section_id(this, shndx
));
229 // Return offset in output GOT section that this object will use
230 // as a TOC pointer. Won't be just a constant with multi-toc support.
232 toc_base_offset() const
236 set_has_small_toc_reloc()
237 { has_small_toc_reloc_
= true; }
240 has_small_toc_reloc() const
241 { return has_small_toc_reloc_
; }
244 set_has_14bit_branch(unsigned int shndx
)
246 if (shndx
>= this->has14_
.size())
247 this->has14_
.resize(shndx
+ 1);
248 this->has14_
[shndx
] = true;
252 has_14bit_branch(unsigned int shndx
) const
253 { return shndx
< this->has14_
.size() && this->has14_
[shndx
]; }
256 set_stub_table(unsigned int shndx
, Stub_table
<size
, big_endian
>* stub_table
)
258 if (shndx
>= this->stub_table_
.size())
259 this->stub_table_
.resize(shndx
+ 1);
260 this->stub_table_
[shndx
] = stub_table
;
263 Stub_table
<size
, big_endian
>*
264 stub_table(unsigned int shndx
)
266 if (shndx
< this->stub_table_
.size())
267 return this->stub_table_
[shndx
];
280 // Return index into opd_ent_ array for .opd entry at OFF.
281 // .opd entries are 24 bytes long, but they can be spaced 16 bytes
282 // apart when the language doesn't use the last 8-byte word, the
283 // environment pointer. Thus dividing the entry section offset by
284 // 16 will give an index into opd_ent_ that works for either layout
285 // of .opd. (It leaves some elements of the vector unused when .opd
286 // entries are spaced 24 bytes apart, but we don't know the spacing
287 // until relocations are processed, and in any case it is possible
288 // for an object to have some entries spaced 16 bytes apart and
289 // others 24 bytes apart.)
291 opd_ent_ndx(size_t off
) const
294 // For 32-bit the .got2 section shdnx, for 64-bit the .opd section shndx.
295 unsigned int special_
;
297 // For 64-bit, whether this object uses small model relocs to access
299 bool has_small_toc_reloc_
;
301 // Set at the start of gc_process_relocs, when we know opd_ent_
302 // vector is valid. The flag could be made atomic and set in
303 // do_read_relocs with memory_order_release and then tested with
304 // memory_order_acquire, potentially resulting in fewer entries in
308 // The first 8-byte word of an OPD entry gives the address of the
309 // entry point of the function. Relocatable object files have a
310 // relocation on this word. The following vector records the
311 // section and offset specified by these relocations.
312 std::vector
<Opd_ent
> opd_ent_
;
314 // References made to this object's .opd section when running
315 // gc_process_relocs for another object, before the opd_ent_ vector
316 // is valid for this object.
317 Access_from access_from_map_
;
319 // Whether input section has a 14-bit branch reloc.
320 std::vector
<bool> has14_
;
322 // The stub table to use for a given input section.
323 std::vector
<Stub_table
<size
, big_endian
>*> stub_table_
;
326 template<int size
, bool big_endian
>
327 class Powerpc_dynobj
: public Sized_dynobj
<size
, big_endian
>
330 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
332 Powerpc_dynobj(const std::string
& name
, Input_file
* input_file
, off_t offset
,
333 const typename
elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
334 : Sized_dynobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
),
335 opd_shndx_(0), opd_ent_()
341 // Call Sized_dynobj::do_read_symbols to read the symbols then
342 // read .opd from a dynamic object, filling in opd_ent_ vector,
344 do_read_symbols(Read_symbols_data
*);
346 // The .opd section shndx.
350 return this->opd_shndx_
;
353 // The .opd section address.
357 return this->opd_address_
;
360 // Init OPD entry arrays.
362 init_opd(size_t opd_size
)
364 size_t count
= this->opd_ent_ndx(opd_size
);
365 this->opd_ent_
.resize(count
);
368 // Return section and offset of function entry for .opd + R_OFF.
370 get_opd_ent(Address r_off
, Address
* value
= NULL
) const
372 size_t ndx
= this->opd_ent_ndx(r_off
);
373 gold_assert(ndx
< this->opd_ent_
.size());
374 gold_assert(this->opd_ent_
[ndx
].shndx
!= 0);
376 *value
= this->opd_ent_
[ndx
].off
;
377 return this->opd_ent_
[ndx
].shndx
;
380 // Set section and offset of function entry for .opd + R_OFF.
382 set_opd_ent(Address r_off
, unsigned int shndx
, Address value
)
384 size_t ndx
= this->opd_ent_ndx(r_off
);
385 gold_assert(ndx
< this->opd_ent_
.size());
386 this->opd_ent_
[ndx
].shndx
= shndx
;
387 this->opd_ent_
[ndx
].off
= value
;
391 // Used to specify extent of executable sections.
394 Sec_info(Address start_
, Address len_
, unsigned int shndx_
)
395 : start(start_
), len(len_
), shndx(shndx_
)
399 operator<(const Sec_info
& that
) const
400 { return this->start
< that
.start
; }
413 // Return index into opd_ent_ array for .opd entry at OFF.
415 opd_ent_ndx(size_t off
) const
418 // For 64-bit the .opd section shndx and address.
419 unsigned int opd_shndx_
;
420 Address opd_address_
;
422 // The first 8-byte word of an OPD entry gives the address of the
423 // entry point of the function. Records the section and offset
424 // corresponding to the address. Note that in dynamic objects,
425 // offset is *not* relative to the section.
426 std::vector
<Opd_ent
> opd_ent_
;
429 template<int size
, bool big_endian
>
430 class Target_powerpc
: public Sized_target
<size
, big_endian
>
434 Output_data_reloc
<elfcpp::SHT_RELA
, true, size
, big_endian
> Reloc_section
;
435 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
436 typedef typename
elfcpp::Elf_types
<size
>::Elf_Swxword Signed_address
;
437 static const Address invalid_address
= static_cast<Address
>(0) - 1;
438 // Offset of tp and dtp pointers from start of TLS block.
439 static const Address tp_offset
= 0x7000;
440 static const Address dtp_offset
= 0x8000;
443 : Sized_target
<size
, big_endian
>(&powerpc_info
),
444 got_(NULL
), plt_(NULL
), iplt_(NULL
), brlt_section_(NULL
),
445 glink_(NULL
), rela_dyn_(NULL
), copy_relocs_(elfcpp::R_POWERPC_COPY
),
446 dynbss_(NULL
), tlsld_got_offset_(-1U),
447 stub_tables_(), branch_lookup_table_(), branch_info_(),
448 plt_thread_safe_(false)
452 // Process the relocations to determine unreferenced sections for
453 // garbage collection.
455 gc_process_relocs(Symbol_table
* symtab
,
457 Sized_relobj_file
<size
, big_endian
>* object
,
458 unsigned int data_shndx
,
459 unsigned int sh_type
,
460 const unsigned char* prelocs
,
462 Output_section
* output_section
,
463 bool needs_special_offset_handling
,
464 size_t local_symbol_count
,
465 const unsigned char* plocal_symbols
);
467 // Scan the relocations to look for symbol adjustments.
469 scan_relocs(Symbol_table
* symtab
,
471 Sized_relobj_file
<size
, big_endian
>* object
,
472 unsigned int data_shndx
,
473 unsigned int sh_type
,
474 const unsigned char* prelocs
,
476 Output_section
* output_section
,
477 bool needs_special_offset_handling
,
478 size_t local_symbol_count
,
479 const unsigned char* plocal_symbols
);
481 // Map input .toc section to output .got section.
483 do_output_section_name(const Relobj
*, const char* name
, size_t* plen
) const
485 if (size
== 64 && strcmp(name
, ".toc") == 0)
493 // Provide linker defined save/restore functions.
495 define_save_restore_funcs(Layout
*, Symbol_table
*);
497 // No stubs unless a final link.
500 { return !parameters
->options().relocatable(); }
503 do_relax(int, const Input_objects
*, Symbol_table
*, Layout
*, const Task
*);
506 do_plt_fde_location(const Output_data
*, unsigned char*,
507 uint64_t*, off_t
*) const;
509 // Stash info about branches, for stub generation.
511 push_branch(Powerpc_relobj
<size
, big_endian
>* ppc_object
,
512 unsigned int data_shndx
, Address r_offset
,
513 unsigned int r_type
, unsigned int r_sym
, Address addend
)
515 Branch_info
info(ppc_object
, data_shndx
, r_offset
, r_type
, r_sym
, addend
);
516 this->branch_info_
.push_back(info
);
517 if (r_type
== elfcpp::R_POWERPC_REL14
518 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
519 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
)
520 ppc_object
->set_has_14bit_branch(data_shndx
);
523 Stub_table
<size
, big_endian
>*
527 do_define_standard_symbols(Symbol_table
*, Layout
*);
529 // Finalize the sections.
531 do_finalize_sections(Layout
*, const Input_objects
*, Symbol_table
*);
533 // Return the value to use for a dynamic which requires special
536 do_dynsym_value(const Symbol
*) const;
538 // Return the PLT address to use for a local symbol.
540 do_plt_address_for_local(const Relobj
*, unsigned int) const;
542 // Return the PLT address to use for a global symbol.
544 do_plt_address_for_global(const Symbol
*) const;
546 // Return the offset to use for the GOT_INDX'th got entry which is
547 // for a local tls symbol specified by OBJECT, SYMNDX.
549 do_tls_offset_for_local(const Relobj
* object
,
551 unsigned int got_indx
) const;
553 // Return the offset to use for the GOT_INDX'th got entry which is
554 // for global tls symbol GSYM.
556 do_tls_offset_for_global(Symbol
* gsym
, unsigned int got_indx
) const;
559 do_function_location(Symbol_location
*) const;
562 do_can_check_for_function_pointers() const
565 // Relocate a section.
567 relocate_section(const Relocate_info
<size
, big_endian
>*,
568 unsigned int sh_type
,
569 const unsigned char* prelocs
,
571 Output_section
* output_section
,
572 bool needs_special_offset_handling
,
574 Address view_address
,
575 section_size_type view_size
,
576 const Reloc_symbol_changes
*);
578 // Scan the relocs during a relocatable link.
580 scan_relocatable_relocs(Symbol_table
* symtab
,
582 Sized_relobj_file
<size
, big_endian
>* object
,
583 unsigned int data_shndx
,
584 unsigned int sh_type
,
585 const unsigned char* prelocs
,
587 Output_section
* output_section
,
588 bool needs_special_offset_handling
,
589 size_t local_symbol_count
,
590 const unsigned char* plocal_symbols
,
591 Relocatable_relocs
*);
593 // Emit relocations for a section.
595 relocate_relocs(const Relocate_info
<size
, big_endian
>*,
596 unsigned int sh_type
,
597 const unsigned char* prelocs
,
599 Output_section
* output_section
,
600 typename
elfcpp::Elf_types
<size
>::Elf_Off
601 offset_in_output_section
,
602 const Relocatable_relocs
*,
604 Address view_address
,
606 unsigned char* reloc_view
,
607 section_size_type reloc_view_size
);
609 // Return whether SYM is defined by the ABI.
611 do_is_defined_by_abi(const Symbol
* sym
) const
613 return strcmp(sym
->name(), "__tls_get_addr") == 0;
616 // Return the size of the GOT section.
620 gold_assert(this->got_
!= NULL
);
621 return this->got_
->data_size();
624 // Get the PLT section.
625 const Output_data_plt_powerpc
<size
, big_endian
>*
628 gold_assert(this->plt_
!= NULL
);
632 // Get the IPLT section.
633 const Output_data_plt_powerpc
<size
, big_endian
>*
636 gold_assert(this->iplt_
!= NULL
);
640 // Get the .glink section.
641 const Output_data_glink
<size
, big_endian
>*
642 glink_section() const
644 gold_assert(this->glink_
!= NULL
);
648 bool has_glink() const
649 { return this->glink_
!= NULL
; }
651 // Get the GOT section.
652 const Output_data_got_powerpc
<size
, big_endian
>*
655 gold_assert(this->got_
!= NULL
);
659 // Get the GOT section, creating it if necessary.
660 Output_data_got_powerpc
<size
, big_endian
>*
661 got_section(Symbol_table
*, Layout
*);
664 do_make_elf_object(const std::string
&, Input_file
*, off_t
,
665 const elfcpp::Ehdr
<size
, big_endian
>&);
667 // Return the number of entries in the GOT.
669 got_entry_count() const
671 if (this->got_
== NULL
)
673 return this->got_size() / (size
/ 8);
676 // Return the number of entries in the PLT.
678 plt_entry_count() const;
680 // Return the offset of the first non-reserved PLT entry.
682 first_plt_entry_offset() const;
684 // Return the size of each PLT entry.
686 plt_entry_size() const;
688 // Add any special sections for this symbol to the gc work list.
689 // For powerpc64, this adds the code section of a function
692 do_gc_mark_symbol(Symbol_table
* symtab
, Symbol
* sym
) const;
694 // Handle target specific gc actions when adding a gc reference from
695 // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX
696 // and DST_OFF. For powerpc64, this adds a referenc to the code
697 // section of a function descriptor.
699 do_gc_add_reference(Symbol_table
* symtab
,
701 unsigned int src_shndx
,
703 unsigned int dst_shndx
,
704 Address dst_off
) const;
706 typedef std::vector
<Stub_table
<size
, big_endian
>*> Stub_tables
;
709 { return this->stub_tables_
; }
711 const Output_data_brlt_powerpc
<size
, big_endian
>*
713 { return this->brlt_section_
; }
716 add_branch_lookup_table(Address to
)
718 unsigned int off
= this->branch_lookup_table_
.size() * (size
/ 8);
719 this->branch_lookup_table_
.insert(std::make_pair(to
, off
));
723 find_branch_lookup_table(Address to
)
725 typename
Branch_lookup_table::const_iterator p
726 = this->branch_lookup_table_
.find(to
);
727 return p
== this->branch_lookup_table_
.end() ? invalid_address
: p
->second
;
731 write_branch_lookup_table(unsigned char *oview
)
733 for (typename
Branch_lookup_table::const_iterator p
734 = this->branch_lookup_table_
.begin();
735 p
!= this->branch_lookup_table_
.end();
738 elfcpp::Swap
<32, big_endian
>::writeval(oview
+ p
->second
, p
->first
);
743 plt_thread_safe() const
744 { return this->plt_thread_safe_
; }
760 : tls_get_addr_(NOT_EXPECTED
),
761 relinfo_(NULL
), relnum_(0), r_offset_(0)
766 if (this->tls_get_addr_
!= NOT_EXPECTED
)
773 if (this->relinfo_
!= NULL
)
774 gold_error_at_location(this->relinfo_
, this->relnum_
, this->r_offset_
,
775 _("missing expected __tls_get_addr call"));
779 expect_tls_get_addr_call(
780 const Relocate_info
<size
, big_endian
>* relinfo
,
784 this->tls_get_addr_
= EXPECTED
;
785 this->relinfo_
= relinfo
;
786 this->relnum_
= relnum
;
787 this->r_offset_
= r_offset
;
791 expect_tls_get_addr_call()
792 { this->tls_get_addr_
= EXPECTED
; }
795 skip_next_tls_get_addr_call()
796 {this->tls_get_addr_
= SKIP
; }
799 maybe_skip_tls_get_addr_call(unsigned int r_type
, const Symbol
* gsym
)
801 bool is_tls_call
= ((r_type
== elfcpp::R_POWERPC_REL24
802 || r_type
== elfcpp::R_PPC_PLTREL24
)
804 && strcmp(gsym
->name(), "__tls_get_addr") == 0);
805 Tls_get_addr last_tls
= this->tls_get_addr_
;
806 this->tls_get_addr_
= NOT_EXPECTED
;
807 if (is_tls_call
&& last_tls
!= EXPECTED
)
809 else if (!is_tls_call
&& last_tls
!= NOT_EXPECTED
)
818 // What we're up to regarding calls to __tls_get_addr.
819 // On powerpc, the branch and link insn making a call to
820 // __tls_get_addr is marked with a relocation, R_PPC64_TLSGD,
821 // R_PPC64_TLSLD, R_PPC_TLSGD or R_PPC_TLSLD, in addition to the
822 // usual R_POWERPC_REL24 or R_PPC_PLTREL25 relocation on a call.
823 // The marker relocation always comes first, and has the same
824 // symbol as the reloc on the insn setting up the __tls_get_addr
825 // argument. This ties the arg setup insn with the call insn,
826 // allowing ld to safely optimize away the call. We check that
827 // every call to __tls_get_addr has a marker relocation, and that
828 // every marker relocation is on a call to __tls_get_addr.
829 Tls_get_addr tls_get_addr_
;
830 // Info about the last reloc for error message.
831 const Relocate_info
<size
, big_endian
>* relinfo_
;
836 // The class which scans relocations.
837 class Scan
: protected Track_tls
840 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
843 : Track_tls(), issued_non_pic_error_(false)
847 get_reference_flags(unsigned int r_type
);
850 local(Symbol_table
* symtab
, Layout
* layout
, Target_powerpc
* target
,
851 Sized_relobj_file
<size
, big_endian
>* object
,
852 unsigned int data_shndx
,
853 Output_section
* output_section
,
854 const elfcpp::Rela
<size
, big_endian
>& reloc
, unsigned int r_type
,
855 const elfcpp::Sym
<size
, big_endian
>& lsym
,
859 global(Symbol_table
* symtab
, Layout
* layout
, Target_powerpc
* target
,
860 Sized_relobj_file
<size
, big_endian
>* object
,
861 unsigned int data_shndx
,
862 Output_section
* output_section
,
863 const elfcpp::Rela
<size
, big_endian
>& reloc
, unsigned int r_type
,
867 local_reloc_may_be_function_pointer(Symbol_table
* , Layout
* ,
869 Sized_relobj_file
<size
, big_endian
>* ,
872 const elfcpp::Rela
<size
, big_endian
>& ,
874 const elfcpp::Sym
<size
, big_endian
>&)
876 // PowerPC64 .opd is not folded, so any identical function text
877 // may be folded and we'll still keep function addresses distinct.
878 // That means no reloc is of concern here.
881 // For 32-bit, conservatively assume anything but calls to
882 // function code might be taking the address of the function.
883 return !is_branch_reloc(r_type
);
887 global_reloc_may_be_function_pointer(Symbol_table
* , Layout
* ,
889 Sized_relobj_file
<size
, big_endian
>* ,
892 const elfcpp::Rela
<size
, big_endian
>& ,
899 return !is_branch_reloc(r_type
);
903 reloc_needs_plt_for_ifunc(Sized_relobj_file
<size
, big_endian
>* object
,
904 unsigned int r_type
, bool report_err
);
908 unsupported_reloc_local(Sized_relobj_file
<size
, big_endian
>*,
909 unsigned int r_type
);
912 unsupported_reloc_global(Sized_relobj_file
<size
, big_endian
>*,
913 unsigned int r_type
, Symbol
*);
916 generate_tls_call(Symbol_table
* symtab
, Layout
* layout
,
917 Target_powerpc
* target
);
920 check_non_pic(Relobj
*, unsigned int r_type
);
922 // Whether we have issued an error about a non-PIC compilation.
923 bool issued_non_pic_error_
;
927 symval_for_branch(const Symbol_table
* symtab
, Address value
,
928 const Sized_symbol
<size
>* gsym
,
929 Powerpc_relobj
<size
, big_endian
>* object
,
930 unsigned int *dest_shndx
);
932 // The class which implements relocation.
933 class Relocate
: protected Track_tls
936 // Use 'at' branch hints when true, 'y' when false.
937 // FIXME maybe: set this with an option.
938 static const bool is_isa_v2
= true;
944 // Do a relocation. Return false if the caller should not issue
945 // any warnings about this relocation.
947 relocate(const Relocate_info
<size
, big_endian
>*, Target_powerpc
*,
948 Output_section
*, size_t relnum
,
949 const elfcpp::Rela
<size
, big_endian
>&,
950 unsigned int r_type
, const Sized_symbol
<size
>*,
951 const Symbol_value
<size
>*,
953 typename
elfcpp::Elf_types
<size
>::Elf_Addr
,
957 class Relocate_comdat_behavior
960 // Decide what the linker should do for relocations that refer to
961 // discarded comdat sections.
962 inline Comdat_behavior
963 get(const char* name
)
965 gold::Default_comdat_behavior default_behavior
;
966 Comdat_behavior ret
= default_behavior
.get(name
);
967 if (ret
== CB_WARNING
)
970 && (strcmp(name
, ".fixup") == 0
971 || strcmp(name
, ".got2") == 0))
974 && (strcmp(name
, ".opd") == 0
975 || strcmp(name
, ".toc") == 0
976 || strcmp(name
, ".toc1") == 0))
983 // A class which returns the size required for a relocation type,
984 // used while scanning relocs during a relocatable link.
985 class Relocatable_size_for_reloc
989 get_size_for_reloc(unsigned int, Relobj
*)
996 // Optimize the TLS relocation type based on what we know about the
997 // symbol. IS_FINAL is true if the final address of this symbol is
998 // known at link time.
1000 tls::Tls_optimization
1001 optimize_tls_gd(bool is_final
)
1003 // If we are generating a shared library, then we can't do anything
1005 if (parameters
->options().shared())
1006 return tls::TLSOPT_NONE
;
1009 return tls::TLSOPT_TO_IE
;
1010 return tls::TLSOPT_TO_LE
;
1013 tls::Tls_optimization
1016 if (parameters
->options().shared())
1017 return tls::TLSOPT_NONE
;
1019 return tls::TLSOPT_TO_LE
;
1022 tls::Tls_optimization
1023 optimize_tls_ie(bool is_final
)
1025 if (!is_final
|| parameters
->options().shared())
1026 return tls::TLSOPT_NONE
;
1028 return tls::TLSOPT_TO_LE
;
1033 make_glink_section(Layout
*);
1035 // Create the PLT section.
1037 make_plt_section(Symbol_table
*, Layout
*);
1040 make_iplt_section(Symbol_table
*, Layout
*);
1043 make_brlt_section(Layout
*);
1045 // Create a PLT entry for a global symbol.
1047 make_plt_entry(Symbol_table
*, Layout
*, Symbol
*);
1049 // Create a PLT entry for a local IFUNC symbol.
1051 make_local_ifunc_plt_entry(Symbol_table
*, Layout
*,
1052 Sized_relobj_file
<size
, big_endian
>*,
1056 // Create a GOT entry for local dynamic __tls_get_addr.
1058 tlsld_got_offset(Symbol_table
* symtab
, Layout
* layout
,
1059 Sized_relobj_file
<size
, big_endian
>* object
);
1062 tlsld_got_offset() const
1064 return this->tlsld_got_offset_
;
1067 // Get the dynamic reloc section, creating it if necessary.
1069 rela_dyn_section(Layout
*);
1071 // Similarly, but for ifunc symbols get the one for ifunc.
1073 rela_dyn_section(Symbol_table
*, Layout
*, bool for_ifunc
);
1075 // Copy a relocation against a global symbol.
1077 copy_reloc(Symbol_table
* symtab
, Layout
* layout
,
1078 Sized_relobj_file
<size
, big_endian
>* object
,
1079 unsigned int shndx
, Output_section
* output_section
,
1080 Symbol
* sym
, const elfcpp::Rela
<size
, big_endian
>& reloc
)
1082 this->copy_relocs_
.copy_reloc(symtab
, layout
,
1083 symtab
->get_sized_symbol
<size
>(sym
),
1084 object
, shndx
, output_section
,
1085 reloc
, this->rela_dyn_section(layout
));
1088 // Look over all the input sections, deciding where to place stub.
1090 group_sections(Layout
*, const Task
*);
1092 // Sort output sections by address.
1093 struct Sort_sections
1096 operator()(const Output_section
* sec1
, const Output_section
* sec2
)
1097 { return sec1
->address() < sec2
->address(); }
1103 Branch_info(Powerpc_relobj
<size
, big_endian
>* ppc_object
,
1104 unsigned int data_shndx
,
1106 unsigned int r_type
,
1109 : object_(ppc_object
), shndx_(data_shndx
), offset_(r_offset
),
1110 r_type_(r_type
), r_sym_(r_sym
), addend_(addend
)
1116 // If this branch needs a plt call stub, or a long branch stub, make one.
1118 make_stub(Stub_table
<size
, big_endian
>*,
1119 Stub_table
<size
, big_endian
>*,
1120 Symbol_table
*) const;
1123 // The branch location..
1124 Powerpc_relobj
<size
, big_endian
>* object_
;
1125 unsigned int shndx_
;
1127 // ..and the branch type and destination.
1128 unsigned int r_type_
;
1129 unsigned int r_sym_
;
1133 // Information about this specific target which we pass to the
1134 // general Target structure.
1135 static Target::Target_info powerpc_info
;
1137 // The types of GOT entries needed for this platform.
1138 // These values are exposed to the ABI in an incremental link.
1139 // Do not renumber existing values without changing the version
1140 // number of the .gnu_incremental_inputs section.
1144 GOT_TYPE_TLSGD
, // double entry for @got@tlsgd
1145 GOT_TYPE_DTPREL
, // entry for @got@dtprel
1146 GOT_TYPE_TPREL
// entry for @got@tprel
1150 Output_data_got_powerpc
<size
, big_endian
>* got_
;
1151 // The PLT section. This is a container for a table of addresses,
1152 // and their relocations. Each address in the PLT has a dynamic
1153 // relocation (R_*_JMP_SLOT) and each address will have a
1154 // corresponding entry in .glink for lazy resolution of the PLT.
1155 // ppc32 initialises the PLT to point at the .glink entry, while
1156 // ppc64 leaves this to ld.so. To make a call via the PLT, the
1157 // linker adds a stub that loads the PLT entry into ctr then
1158 // branches to ctr. There may be more than one stub for each PLT
1159 // entry. DT_JMPREL points at the first PLT dynamic relocation and
1160 // DT_PLTRELSZ gives the total size of PLT dynamic relocations.
1161 Output_data_plt_powerpc
<size
, big_endian
>* plt_
;
1162 // The IPLT section. Like plt_, this is a container for a table of
1163 // addresses and their relocations, specifically for STT_GNU_IFUNC
1164 // functions that resolve locally (STT_GNU_IFUNC functions that
1165 // don't resolve locally go in PLT). Unlike plt_, these have no
1166 // entry in .glink for lazy resolution, and the relocation section
1167 // does not have a 1-1 correspondence with IPLT addresses. In fact,
1168 // the relocation section may contain relocations against
1169 // STT_GNU_IFUNC symbols at locations outside of IPLT. The
1170 // relocation section will appear at the end of other dynamic
1171 // relocations, so that ld.so applies these relocations after other
1172 // dynamic relocations. In a static executable, the relocation
1173 // section is emitted and marked with __rela_iplt_start and
1174 // __rela_iplt_end symbols.
1175 Output_data_plt_powerpc
<size
, big_endian
>* iplt_
;
1176 // Section holding long branch destinations.
1177 Output_data_brlt_powerpc
<size
, big_endian
>* brlt_section_
;
1178 // The .glink section.
1179 Output_data_glink
<size
, big_endian
>* glink_
;
1180 // The dynamic reloc section.
1181 Reloc_section
* rela_dyn_
;
1182 // Relocs saved to avoid a COPY reloc.
1183 Copy_relocs
<elfcpp::SHT_RELA
, size
, big_endian
> copy_relocs_
;
1184 // Space for variables copied with a COPY reloc.
1185 Output_data_space
* dynbss_
;
1186 // Offset of the GOT entry for local dynamic __tls_get_addr calls.
1187 unsigned int tlsld_got_offset_
;
1189 Stub_tables stub_tables_
;
1190 typedef Unordered_map
<Address
, unsigned int> Branch_lookup_table
;
1191 Branch_lookup_table branch_lookup_table_
;
1193 typedef std::vector
<Branch_info
> Branches
;
1194 Branches branch_info_
;
1196 bool plt_thread_safe_
;
1200 Target::Target_info Target_powerpc
<32, true>::powerpc_info
=
1203 true, // is_big_endian
1204 elfcpp::EM_PPC
, // machine_code
1205 false, // has_make_symbol
1206 false, // has_resolve
1207 false, // has_code_fill
1208 true, // is_default_stack_executable
1209 false, // can_icf_inline_merge_sections
1211 "/usr/lib/ld.so.1", // dynamic_linker
1212 0x10000000, // default_text_segment_address
1213 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1214 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1215 false, // isolate_execinstr
1217 elfcpp::SHN_UNDEF
, // small_common_shndx
1218 elfcpp::SHN_UNDEF
, // large_common_shndx
1219 0, // small_common_section_flags
1220 0, // large_common_section_flags
1221 NULL
, // attributes_section
1222 NULL
// attributes_vendor
1226 Target::Target_info Target_powerpc
<32, false>::powerpc_info
=
1229 false, // is_big_endian
1230 elfcpp::EM_PPC
, // machine_code
1231 false, // has_make_symbol
1232 false, // has_resolve
1233 false, // has_code_fill
1234 true, // is_default_stack_executable
1235 false, // can_icf_inline_merge_sections
1237 "/usr/lib/ld.so.1", // dynamic_linker
1238 0x10000000, // default_text_segment_address
1239 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1240 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1241 false, // isolate_execinstr
1243 elfcpp::SHN_UNDEF
, // small_common_shndx
1244 elfcpp::SHN_UNDEF
, // large_common_shndx
1245 0, // small_common_section_flags
1246 0, // large_common_section_flags
1247 NULL
, // attributes_section
1248 NULL
// attributes_vendor
1252 Target::Target_info Target_powerpc
<64, true>::powerpc_info
=
1255 true, // is_big_endian
1256 elfcpp::EM_PPC64
, // machine_code
1257 false, // has_make_symbol
1258 false, // has_resolve
1259 false, // has_code_fill
1260 true, // is_default_stack_executable
1261 false, // can_icf_inline_merge_sections
1263 "/usr/lib/ld.so.1", // dynamic_linker
1264 0x10000000, // default_text_segment_address
1265 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1266 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1267 false, // isolate_execinstr
1269 elfcpp::SHN_UNDEF
, // small_common_shndx
1270 elfcpp::SHN_UNDEF
, // large_common_shndx
1271 0, // small_common_section_flags
1272 0, // large_common_section_flags
1273 NULL
, // attributes_section
1274 NULL
// attributes_vendor
1278 Target::Target_info Target_powerpc
<64, false>::powerpc_info
=
1281 false, // is_big_endian
1282 elfcpp::EM_PPC64
, // machine_code
1283 false, // has_make_symbol
1284 false, // has_resolve
1285 false, // has_code_fill
1286 true, // is_default_stack_executable
1287 false, // can_icf_inline_merge_sections
1289 "/usr/lib/ld.so.1", // dynamic_linker
1290 0x10000000, // default_text_segment_address
1291 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
1292 4 * 1024, // common_pagesize (overridable by -z common-page-size)
1293 false, // isolate_execinstr
1295 elfcpp::SHN_UNDEF
, // small_common_shndx
1296 elfcpp::SHN_UNDEF
, // large_common_shndx
1297 0, // small_common_section_flags
1298 0, // large_common_section_flags
1299 NULL
, // attributes_section
1300 NULL
// attributes_vendor
1304 is_branch_reloc(unsigned int r_type
)
1306 return (r_type
== elfcpp::R_POWERPC_REL24
1307 || r_type
== elfcpp::R_PPC_PLTREL24
1308 || r_type
== elfcpp::R_PPC_LOCAL24PC
1309 || r_type
== elfcpp::R_POWERPC_REL14
1310 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
1311 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
1312 || r_type
== elfcpp::R_POWERPC_ADDR24
1313 || r_type
== elfcpp::R_POWERPC_ADDR14
1314 || r_type
== elfcpp::R_POWERPC_ADDR14_BRTAKEN
1315 || r_type
== elfcpp::R_POWERPC_ADDR14_BRNTAKEN
);
1318 // If INSN is an opcode that may be used with an @tls operand, return
1319 // the transformed insn for TLS optimisation, otherwise return 0. If
1320 // REG is non-zero only match an insn with RB or RA equal to REG.
1322 at_tls_transform(uint32_t insn
, unsigned int reg
)
1324 if ((insn
& (0x3f << 26)) != 31 << 26)
1328 if (reg
== 0 || ((insn
>> 11) & 0x1f) == reg
)
1329 rtra
= insn
& ((1 << 26) - (1 << 16));
1330 else if (((insn
>> 16) & 0x1f) == reg
)
1331 rtra
= (insn
& (0x1f << 21)) | ((insn
& (0x1f << 11)) << 5);
1335 if ((insn
& (0x3ff << 1)) == 266 << 1)
1338 else if ((insn
& (0x1f << 1)) == 23 << 1
1339 && ((insn
& (0x1f << 6)) < 14 << 6
1340 || ((insn
& (0x1f << 6)) >= 16 << 6
1341 && (insn
& (0x1f << 6)) < 24 << 6)))
1342 // load and store indexed -> dform
1343 insn
= (32 | ((insn
>> 6) & 0x1f)) << 26;
1344 else if ((insn
& (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
1345 // ldx, ldux, stdx, stdux -> ld, ldu, std, stdu
1346 insn
= ((58 | ((insn
>> 6) & 4)) << 26) | ((insn
>> 6) & 1);
1347 else if ((insn
& (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
1349 insn
= (58 << 26) | 2;
1356 // Modified version of symtab.h class Symbol member
1357 // Given a direct absolute or pc-relative static relocation against
1358 // the global symbol, this function returns whether a dynamic relocation
1363 needs_dynamic_reloc(const Symbol
* gsym
, int flags
)
1365 // No dynamic relocations in a static link!
1366 if (parameters
->doing_static_link())
1369 // A reference to an undefined symbol from an executable should be
1370 // statically resolved to 0, and does not need a dynamic relocation.
1371 // This matches gnu ld behavior.
1372 if (gsym
->is_undefined() && !parameters
->options().shared())
1375 // A reference to an absolute symbol does not need a dynamic relocation.
1376 if (gsym
->is_absolute())
1379 // An absolute reference within a position-independent output file
1380 // will need a dynamic relocation.
1381 if ((flags
& Symbol::ABSOLUTE_REF
)
1382 && parameters
->options().output_is_position_independent())
1385 // A function call that can branch to a local PLT entry does not need
1386 // a dynamic relocation.
1387 if ((flags
& Symbol::FUNCTION_CALL
) && gsym
->has_plt_offset())
1390 // A reference to any PLT entry in a non-position-independent executable
1391 // does not need a dynamic relocation.
1392 // Except due to having function descriptors on powerpc64 we don't define
1393 // functions to their plt code in an executable, so this doesn't apply.
1395 && !parameters
->options().output_is_position_independent()
1396 && gsym
->has_plt_offset())
1399 // A reference to a symbol defined in a dynamic object or to a
1400 // symbol that is preemptible will need a dynamic relocation.
1401 if (gsym
->is_from_dynobj()
1402 || gsym
->is_undefined()
1403 || gsym
->is_preemptible())
1406 // For all other cases, return FALSE.
1410 // Modified version of symtab.h class Symbol member
1411 // Whether we should use the PLT offset associated with a symbol for
1412 // a relocation. FLAGS is a set of Reference_flags.
1416 use_plt_offset(const Symbol
* gsym
, int flags
)
1418 // If the symbol doesn't have a PLT offset, then naturally we
1419 // don't want to use it.
1420 if (!gsym
->has_plt_offset())
1423 // For a STT_GNU_IFUNC symbol we always have to use the PLT entry.
1424 if (gsym
->type() == elfcpp::STT_GNU_IFUNC
)
1427 // If we are going to generate a dynamic relocation, then we will
1428 // wind up using that, so no need to use the PLT entry.
1429 if (needs_dynamic_reloc
<size
>(gsym
, flags
))
1432 // If the symbol is from a dynamic object, we need to use the PLT
1434 if (gsym
->is_from_dynobj())
1437 // If we are generating a shared object, and this symbol is
1438 // undefined or preemptible, we need to use the PLT entry.
1439 if (parameters
->options().shared()
1440 && (gsym
->is_undefined() || gsym
->is_preemptible()))
1443 // If this is a call to a weak undefined symbol, we need to use
1444 // the PLT entry; the symbol may be defined by a library loaded
1446 if ((flags
& Symbol::FUNCTION_CALL
) && gsym
->is_weak_undefined())
1449 // Otherwise we can use the regular definition.
1453 template<int size
, bool big_endian
>
1454 class Powerpc_relocate_functions
1471 typedef Powerpc_relocate_functions
<size
, big_endian
> This
;
1472 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
1474 template<int valsize
>
1476 has_overflow_signed(Address value
)
1478 // limit = 1 << (valsize - 1) without shift count exceeding size of type
1479 Address limit
= static_cast<Address
>(1) << ((valsize
- 1) >> 1);
1480 limit
<<= ((valsize
- 1) >> 1);
1481 limit
<<= ((valsize
- 1) - 2 * ((valsize
- 1) >> 1));
1482 return value
+ limit
> (limit
<< 1) - 1;
1485 template<int valsize
>
1487 has_overflow_bitfield(Address value
)
1489 Address limit
= static_cast<Address
>(1) << ((valsize
- 1) >> 1);
1490 limit
<<= ((valsize
- 1) >> 1);
1491 limit
<<= ((valsize
- 1) - 2 * ((valsize
- 1) >> 1));
1492 return value
> (limit
<< 1) - 1 && value
+ limit
> (limit
<< 1) - 1;
1495 template<int valsize
>
1496 static inline Status
1497 overflowed(Address value
, Overflow_check overflow
)
1499 if (overflow
== CHECK_SIGNED
)
1501 if (has_overflow_signed
<valsize
>(value
))
1502 return STATUS_OVERFLOW
;
1504 else if (overflow
== CHECK_BITFIELD
)
1506 if (has_overflow_bitfield
<valsize
>(value
))
1507 return STATUS_OVERFLOW
;
1512 // Do a simple RELA relocation
1513 template<int valsize
>
1514 static inline Status
1515 rela(unsigned char* view
, Address value
, Overflow_check overflow
)
1517 typedef typename
elfcpp::Swap
<valsize
, big_endian
>::Valtype Valtype
;
1518 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
1519 elfcpp::Swap
<valsize
, big_endian
>::writeval(wv
, value
);
1520 return overflowed
<valsize
>(value
, overflow
);
1523 template<int valsize
>
1524 static inline Status
1525 rela(unsigned char* view
,
1526 unsigned int right_shift
,
1527 typename
elfcpp::Valtype_base
<valsize
>::Valtype dst_mask
,
1529 Overflow_check overflow
)
1531 typedef typename
elfcpp::Swap
<valsize
, big_endian
>::Valtype Valtype
;
1532 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
1533 Valtype val
= elfcpp::Swap
<valsize
, big_endian
>::readval(wv
);
1534 Valtype reloc
= value
>> right_shift
;
1537 elfcpp::Swap
<valsize
, big_endian
>::writeval(wv
, val
| reloc
);
1538 return overflowed
<valsize
>(value
>> right_shift
, overflow
);
1541 // Do a simple RELA relocation, unaligned.
1542 template<int valsize
>
1543 static inline Status
1544 rela_ua(unsigned char* view
, Address value
, Overflow_check overflow
)
1546 elfcpp::Swap_unaligned
<valsize
, big_endian
>::writeval(view
, value
);
1547 return overflowed
<valsize
>(value
, overflow
);
1550 template<int valsize
>
1551 static inline Status
1552 rela_ua(unsigned char* view
,
1553 unsigned int right_shift
,
1554 typename
elfcpp::Valtype_base
<valsize
>::Valtype dst_mask
,
1556 Overflow_check overflow
)
1558 typedef typename
elfcpp::Swap_unaligned
<valsize
, big_endian
>::Valtype
1560 Valtype val
= elfcpp::Swap
<valsize
, big_endian
>::readval(view
);
1561 Valtype reloc
= value
>> right_shift
;
1564 elfcpp::Swap_unaligned
<valsize
, big_endian
>::writeval(view
, val
| reloc
);
1565 return overflowed
<valsize
>(value
>> right_shift
, overflow
);
1569 // R_PPC64_ADDR64: (Symbol + Addend)
1571 addr64(unsigned char* view
, Address value
)
1572 { This::template rela
<64>(view
, value
, CHECK_NONE
); }
1574 // R_PPC64_UADDR64: (Symbol + Addend) unaligned
1576 addr64_u(unsigned char* view
, Address value
)
1577 { This::template rela_ua
<64>(view
, value
, CHECK_NONE
); }
1579 // R_POWERPC_ADDR32: (Symbol + Addend)
1580 static inline Status
1581 addr32(unsigned char* view
, Address value
, Overflow_check overflow
)
1582 { return This::template rela
<32>(view
, value
, overflow
); }
1584 // R_POWERPC_UADDR32: (Symbol + Addend) unaligned
1585 static inline Status
1586 addr32_u(unsigned char* view
, Address value
, Overflow_check overflow
)
1587 { return This::template rela_ua
<32>(view
, value
, overflow
); }
1589 // R_POWERPC_ADDR24: (Symbol + Addend) & 0x3fffffc
1590 static inline Status
1591 addr24(unsigned char* view
, Address value
, Overflow_check overflow
)
1593 Status stat
= This::template rela
<32>(view
, 0, 0x03fffffc, value
, overflow
);
1594 if (overflow
!= CHECK_NONE
&& (value
& 3) != 0)
1595 stat
= STATUS_OVERFLOW
;
1599 // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff
1600 static inline Status
1601 addr16(unsigned char* view
, Address value
, Overflow_check overflow
)
1602 { return This::template rela
<16>(view
, value
, overflow
); }
1604 // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff, unaligned
1605 static inline Status
1606 addr16_u(unsigned char* view
, Address value
, Overflow_check overflow
)
1607 { return This::template rela_ua
<16>(view
, value
, overflow
); }
1609 // R_POWERPC_ADDR16_DS: (Symbol + Addend) & 0xfffc
1610 static inline Status
1611 addr16_ds(unsigned char* view
, Address value
, Overflow_check overflow
)
1613 Status stat
= This::template rela
<16>(view
, 0, 0xfffc, value
, overflow
);
1614 if (overflow
!= CHECK_NONE
&& (value
& 3) != 0)
1615 stat
= STATUS_OVERFLOW
;
1619 // R_POWERPC_ADDR16_HI: ((Symbol + Addend) >> 16) & 0xffff
1621 addr16_hi(unsigned char* view
, Address value
)
1622 { This::template rela
<16>(view
, 16, 0xffff, value
, CHECK_NONE
); }
1624 // R_POWERPC_ADDR16_HA: ((Symbol + Addend + 0x8000) >> 16) & 0xffff
1626 addr16_ha(unsigned char* view
, Address value
)
1627 { This::addr16_hi(view
, value
+ 0x8000); }
1629 // R_POWERPC_ADDR16_HIGHER: ((Symbol + Addend) >> 32) & 0xffff
1631 addr16_hi2(unsigned char* view
, Address value
)
1632 { This::template rela
<16>(view
, 32, 0xffff, value
, CHECK_NONE
); }
1634 // R_POWERPC_ADDR16_HIGHERA: ((Symbol + Addend + 0x8000) >> 32) & 0xffff
1636 addr16_ha2(unsigned char* view
, Address value
)
1637 { This::addr16_hi2(view
, value
+ 0x8000); }
1639 // R_POWERPC_ADDR16_HIGHEST: ((Symbol + Addend) >> 48) & 0xffff
1641 addr16_hi3(unsigned char* view
, Address value
)
1642 { This::template rela
<16>(view
, 48, 0xffff, value
, CHECK_NONE
); }
1644 // R_POWERPC_ADDR16_HIGHESTA: ((Symbol + Addend + 0x8000) >> 48) & 0xffff
1646 addr16_ha3(unsigned char* view
, Address value
)
1647 { This::addr16_hi3(view
, value
+ 0x8000); }
1649 // R_POWERPC_ADDR14: (Symbol + Addend) & 0xfffc
1650 static inline Status
1651 addr14(unsigned char* view
, Address value
, Overflow_check overflow
)
1653 Status stat
= This::template rela
<32>(view
, 0, 0xfffc, value
, overflow
);
1654 if (overflow
!= CHECK_NONE
&& (value
& 3) != 0)
1655 stat
= STATUS_OVERFLOW
;
1660 // Stash away the index of .got2 or .opd in a relocatable object, if
1661 // such a section exists.
1663 template<int size
, bool big_endian
>
1665 Powerpc_relobj
<size
, big_endian
>::do_find_special_sections(
1666 Read_symbols_data
* sd
)
1668 const unsigned char* const pshdrs
= sd
->section_headers
->data();
1669 const unsigned char* namesu
= sd
->section_names
->data();
1670 const char* names
= reinterpret_cast<const char*>(namesu
);
1671 section_size_type names_size
= sd
->section_names_size
;
1672 const unsigned char* s
;
1674 s
= this->template find_shdr
<size
, big_endian
>(pshdrs
,
1675 size
== 32 ? ".got2" : ".opd",
1676 names
, names_size
, NULL
);
1679 unsigned int ndx
= (s
- pshdrs
) / elfcpp::Elf_sizes
<size
>::shdr_size
;
1680 this->special_
= ndx
;
1682 return Sized_relobj_file
<size
, big_endian
>::do_find_special_sections(sd
);
1685 // Examine .rela.opd to build info about function entry points.
1687 template<int size
, bool big_endian
>
1689 Powerpc_relobj
<size
, big_endian
>::scan_opd_relocs(
1691 const unsigned char* prelocs
,
1692 const unsigned char* plocal_syms
)
1696 typedef typename Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::Reloc
1698 const int reloc_size
1699 = Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
1700 const int sym_size
= elfcpp::Elf_sizes
<size
>::sym_size
;
1701 Address expected_off
= 0;
1702 bool regular
= true;
1703 unsigned int opd_ent_size
= 0;
1705 for (size_t i
= 0; i
< reloc_count
; ++i
, prelocs
+= reloc_size
)
1707 Reltype
reloc(prelocs
);
1708 typename
elfcpp::Elf_types
<size
>::Elf_WXword r_info
1709 = reloc
.get_r_info();
1710 unsigned int r_type
= elfcpp::elf_r_type
<size
>(r_info
);
1711 if (r_type
== elfcpp::R_PPC64_ADDR64
)
1713 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(r_info
);
1714 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
;
1717 if (r_sym
< this->local_symbol_count())
1719 typename
elfcpp::Sym
<size
, big_endian
>
1720 lsym(plocal_syms
+ r_sym
* sym_size
);
1721 shndx
= lsym
.get_st_shndx();
1722 shndx
= this->adjust_sym_shndx(r_sym
, shndx
, &is_ordinary
);
1723 value
= lsym
.get_st_value();
1726 shndx
= this->symbol_section_and_value(r_sym
, &value
,
1728 this->set_opd_ent(reloc
.get_r_offset(), shndx
,
1729 value
+ reloc
.get_r_addend());
1732 expected_off
= reloc
.get_r_offset();
1733 opd_ent_size
= expected_off
;
1735 else if (expected_off
!= reloc
.get_r_offset())
1737 expected_off
+= opd_ent_size
;
1739 else if (r_type
== elfcpp::R_PPC64_TOC
)
1741 if (expected_off
- opd_ent_size
+ 8 != reloc
.get_r_offset())
1746 gold_warning(_("%s: unexpected reloc type %u in .opd section"),
1747 this->name().c_str(), r_type
);
1751 if (reloc_count
<= 2)
1752 opd_ent_size
= this->section_size(this->opd_shndx());
1753 if (opd_ent_size
!= 24 && opd_ent_size
!= 16)
1757 gold_warning(_("%s: .opd is not a regular array of opd entries"),
1758 this->name().c_str());
1764 template<int size
, bool big_endian
>
1766 Powerpc_relobj
<size
, big_endian
>::do_read_relocs(Read_relocs_data
* rd
)
1768 Sized_relobj_file
<size
, big_endian
>::do_read_relocs(rd
);
1771 for (Read_relocs_data::Relocs_list::iterator p
= rd
->relocs
.begin();
1772 p
!= rd
->relocs
.end();
1775 if (p
->data_shndx
== this->opd_shndx())
1777 uint64_t opd_size
= this->section_size(this->opd_shndx());
1778 gold_assert(opd_size
== static_cast<size_t>(opd_size
));
1781 this->init_opd(opd_size
);
1782 this->scan_opd_relocs(p
->reloc_count
, p
->contents
->data(),
1783 rd
->local_symbols
->data());
1791 // Call Sized_dynobj::do_read_symbols to read the symbols then
1792 // read .opd from a dynamic object, filling in opd_ent_ vector,
1794 template<int size
, bool big_endian
>
1796 Powerpc_dynobj
<size
, big_endian
>::do_read_symbols(Read_symbols_data
* sd
)
1798 Sized_dynobj
<size
, big_endian
>::do_read_symbols(sd
);
1801 const int shdr_size
= elfcpp::Elf_sizes
<size
>::shdr_size
;
1802 const unsigned char* const pshdrs
= sd
->section_headers
->data();
1803 const unsigned char* namesu
= sd
->section_names
->data();
1804 const char* names
= reinterpret_cast<const char*>(namesu
);
1805 const unsigned char* s
= NULL
;
1806 const unsigned char* opd
;
1807 section_size_type opd_size
;
1809 // Find and read .opd section.
1812 s
= this->template find_shdr
<size
, big_endian
>(pshdrs
, ".opd", names
,
1813 sd
->section_names_size
,
1818 typename
elfcpp::Shdr
<size
, big_endian
> shdr(s
);
1819 if (shdr
.get_sh_type() == elfcpp::SHT_PROGBITS
1820 && (shdr
.get_sh_flags() & elfcpp::SHF_ALLOC
) != 0)
1822 this->opd_shndx_
= (s
- pshdrs
) / shdr_size
;
1823 this->opd_address_
= shdr
.get_sh_addr();
1824 opd_size
= convert_to_section_size_type(shdr
.get_sh_size());
1825 opd
= this->get_view(shdr
.get_sh_offset(), opd_size
,
1831 // Build set of executable sections.
1832 // Using a set is probably overkill. There is likely to be only
1833 // a few executable sections, typically .init, .text and .fini,
1834 // and they are generally grouped together.
1835 typedef std::set
<Sec_info
> Exec_sections
;
1836 Exec_sections exec_sections
;
1838 for (unsigned int i
= 1; i
< this->shnum(); ++i
, s
+= shdr_size
)
1840 typename
elfcpp::Shdr
<size
, big_endian
> shdr(s
);
1841 if (shdr
.get_sh_type() == elfcpp::SHT_PROGBITS
1842 && ((shdr
.get_sh_flags()
1843 & (elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
))
1844 == (elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
))
1845 && shdr
.get_sh_size() != 0)
1847 exec_sections
.insert(Sec_info(shdr
.get_sh_addr(),
1848 shdr
.get_sh_size(), i
));
1851 if (exec_sections
.empty())
1854 // Look over the OPD entries. This is complicated by the fact
1855 // that some binaries will use two-word entries while others
1856 // will use the standard three-word entries. In most cases
1857 // the third word (the environment pointer for languages like
1858 // Pascal) is unused and will be zero. If the third word is
1859 // used it should not be pointing into executable sections,
1861 this->init_opd(opd_size
);
1862 for (const unsigned char* p
= opd
; p
< opd
+ opd_size
; p
+= 8)
1864 typedef typename
elfcpp::Swap
<64, big_endian
>::Valtype Valtype
;
1865 const Valtype
* valp
= reinterpret_cast<const Valtype
*>(p
);
1866 Valtype val
= elfcpp::Swap
<64, big_endian
>::readval(valp
);
1868 // Chances are that this is the third word of an OPD entry.
1870 typename
Exec_sections::const_iterator e
1871 = exec_sections
.upper_bound(Sec_info(val
, 0, 0));
1872 if (e
!= exec_sections
.begin())
1875 if (e
->start
<= val
&& val
< e
->start
+ e
->len
)
1877 // We have an address in an executable section.
1878 // VAL ought to be the function entry, set it up.
1879 this->set_opd_ent(p
- opd
, e
->shndx
, val
);
1880 // Skip second word of OPD entry, the TOC pointer.
1884 // If we didn't match any executable sections, we likely
1885 // have a non-zero third word in the OPD entry.
1890 // Set up some symbols.
1892 template<int size
, bool big_endian
>
1894 Target_powerpc
<size
, big_endian
>::do_define_standard_symbols(
1895 Symbol_table
* symtab
,
1900 // Define _GLOBAL_OFFSET_TABLE_ to ensure it isn't seen as
1901 // undefined when scanning relocs (and thus requires
1902 // non-relative dynamic relocs). The proper value will be
1904 Symbol
*gotsym
= symtab
->lookup("_GLOBAL_OFFSET_TABLE_", NULL
);
1905 if (gotsym
!= NULL
&& gotsym
->is_undefined())
1907 Target_powerpc
<size
, big_endian
>* target
=
1908 static_cast<Target_powerpc
<size
, big_endian
>*>(
1909 parameters
->sized_target
<size
, big_endian
>());
1910 Output_data_got_powerpc
<size
, big_endian
>* got
1911 = target
->got_section(symtab
, layout
);
1912 symtab
->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL
,
1913 Symbol_table::PREDEFINED
,
1917 elfcpp::STV_HIDDEN
, 0,
1921 // Define _SDA_BASE_ at the start of the .sdata section + 32768.
1922 Symbol
*sdasym
= symtab
->lookup("_SDA_BASE_", NULL
);
1923 if (sdasym
!= NULL
&& sdasym
->is_undefined())
1925 Output_data_space
* sdata
= new Output_data_space(4, "** sdata");
1927 = layout
->add_output_section_data(".sdata", 0,
1929 | elfcpp::SHF_WRITE
,
1930 sdata
, ORDER_SMALL_DATA
, false);
1931 symtab
->define_in_output_data("_SDA_BASE_", NULL
,
1932 Symbol_table::PREDEFINED
,
1933 os
, 32768, 0, elfcpp::STT_OBJECT
,
1934 elfcpp::STB_LOCAL
, elfcpp::STV_HIDDEN
,
1940 // Set up PowerPC target specific relobj.
1942 template<int size
, bool big_endian
>
1944 Target_powerpc
<size
, big_endian
>::do_make_elf_object(
1945 const std::string
& name
,
1946 Input_file
* input_file
,
1947 off_t offset
, const elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
1949 int et
= ehdr
.get_e_type();
1950 // ET_EXEC files are valid input for --just-symbols/-R,
1951 // and we treat them as relocatable objects.
1952 if (et
== elfcpp::ET_REL
1953 || (et
== elfcpp::ET_EXEC
&& input_file
->just_symbols()))
1955 Powerpc_relobj
<size
, big_endian
>* obj
=
1956 new Powerpc_relobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
);
1960 else if (et
== elfcpp::ET_DYN
)
1962 Powerpc_dynobj
<size
, big_endian
>* obj
=
1963 new Powerpc_dynobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
);
1969 gold_error(_("%s: unsupported ELF file type %d"), name
.c_str(), et
);
1974 template<int size
, bool big_endian
>
1975 class Output_data_got_powerpc
: public Output_data_got
<size
, big_endian
>
1978 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Valtype
;
1979 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true, size
, big_endian
> Rela_dyn
;
1981 Output_data_got_powerpc(Symbol_table
* symtab
, Layout
* layout
)
1982 : Output_data_got
<size
, big_endian
>(),
1983 symtab_(symtab
), layout_(layout
),
1984 header_ent_cnt_(size
== 32 ? 3 : 1),
1985 header_index_(size
== 32 ? 0x2000 : 0)
1990 // Create a new GOT entry and return its offset.
1992 add_got_entry(Got_entry got_entry
)
1994 this->reserve_ent();
1995 return Output_data_got
<size
, big_endian
>::add_got_entry(got_entry
);
1998 // Create a pair of new GOT entries and return the offset of the first.
2000 add_got_entry_pair(Got_entry got_entry_1
, Got_entry got_entry_2
)
2002 this->reserve_ent(2);
2003 return Output_data_got
<size
, big_endian
>::add_got_entry_pair(got_entry_1
,
2008 add_constant_pair(Valtype c1
, Valtype c2
)
2010 this->reserve_ent(2);
2011 unsigned int got_offset
= this->add_constant(c1
);
2012 this->add_constant(c2
);
2016 // Offset of _GLOBAL_OFFSET_TABLE_.
2020 return this->got_offset(this->header_index_
);
2023 // Offset of base used to access the GOT/TOC.
2024 // The got/toc pointer reg will be set to this value.
2026 got_base_offset(const Powerpc_relobj
<size
, big_endian
>* object
) const
2029 return this->g_o_t();
2031 return (this->output_section()->address()
2032 + object
->toc_base_offset()
2036 // Ensure our GOT has a header.
2038 set_final_data_size()
2040 if (this->header_ent_cnt_
!= 0)
2041 this->make_header();
2042 Output_data_got
<size
, big_endian
>::set_final_data_size();
2045 // First word of GOT header needs some values that are not
2046 // handled by Output_data_got so poke them in here.
2047 // For 32-bit, address of .dynamic, for 64-bit, address of TOCbase.
2049 do_write(Output_file
* of
)
2052 if (size
== 32 && this->layout_
->dynamic_data() != NULL
)
2053 val
= this->layout_
->dynamic_section()->address();
2055 val
= this->output_section()->address() + 0x8000;
2056 this->replace_constant(this->header_index_
, val
);
2057 Output_data_got
<size
, big_endian
>::do_write(of
);
2062 reserve_ent(unsigned int cnt
= 1)
2064 if (this->header_ent_cnt_
== 0)
2066 if (this->num_entries() + cnt
> this->header_index_
)
2067 this->make_header();
2073 this->header_ent_cnt_
= 0;
2074 this->header_index_
= this->num_entries();
2077 Output_data_got
<size
, big_endian
>::add_constant(0);
2078 Output_data_got
<size
, big_endian
>::add_constant(0);
2079 Output_data_got
<size
, big_endian
>::add_constant(0);
2081 // Define _GLOBAL_OFFSET_TABLE_ at the header
2082 Symbol
*gotsym
= this->symtab_
->lookup("_GLOBAL_OFFSET_TABLE_", NULL
);
2085 Sized_symbol
<size
>* sym
= static_cast<Sized_symbol
<size
>*>(gotsym
);
2086 sym
->set_value(this->g_o_t());
2089 this->symtab_
->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL
,
2090 Symbol_table::PREDEFINED
,
2091 this, this->g_o_t(), 0,
2094 elfcpp::STV_HIDDEN
, 0,
2098 Output_data_got
<size
, big_endian
>::add_constant(0);
2101 // Stashed pointers.
2102 Symbol_table
* symtab_
;
2106 unsigned int header_ent_cnt_
;
2107 // GOT header index.
2108 unsigned int header_index_
;
2111 // Get the GOT section, creating it if necessary.
2113 template<int size
, bool big_endian
>
2114 Output_data_got_powerpc
<size
, big_endian
>*
2115 Target_powerpc
<size
, big_endian
>::got_section(Symbol_table
* symtab
,
2118 if (this->got_
== NULL
)
2120 gold_assert(symtab
!= NULL
&& layout
!= NULL
);
2123 = new Output_data_got_powerpc
<size
, big_endian
>(symtab
, layout
);
2125 layout
->add_output_section_data(".got", elfcpp::SHT_PROGBITS
,
2126 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
2127 this->got_
, ORDER_DATA
, false);
2133 // Get the dynamic reloc section, creating it if necessary.
2135 template<int size
, bool big_endian
>
2136 typename Target_powerpc
<size
, big_endian
>::Reloc_section
*
2137 Target_powerpc
<size
, big_endian
>::rela_dyn_section(Layout
* layout
)
2139 if (this->rela_dyn_
== NULL
)
2141 gold_assert(layout
!= NULL
);
2142 this->rela_dyn_
= new Reloc_section(parameters
->options().combreloc());
2143 layout
->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA
,
2144 elfcpp::SHF_ALLOC
, this->rela_dyn_
,
2145 ORDER_DYNAMIC_RELOCS
, false);
2147 return this->rela_dyn_
;
2150 // Similarly, but for ifunc symbols get the one for ifunc.
2152 template<int size
, bool big_endian
>
2153 typename Target_powerpc
<size
, big_endian
>::Reloc_section
*
2154 Target_powerpc
<size
, big_endian
>::rela_dyn_section(Symbol_table
* symtab
,
2159 return this->rela_dyn_section(layout
);
2161 if (this->iplt_
== NULL
)
2162 this->make_iplt_section(symtab
, layout
);
2163 return this->iplt_
->rel_plt();
2169 // Determine the stub group size. The group size is the absolute
2170 // value of the parameter --stub-group-size. If --stub-group-size
2171 // is passed a negative value, we restrict stubs to be always before
2172 // the stubbed branches.
2173 Stub_control(int32_t size
)
2174 : state_(NO_GROUP
), stub_group_size_(abs(size
)),
2175 stub14_group_size_(abs(size
)),
2176 stubs_always_before_branch_(size
< 0), suppress_size_errors_(false),
2177 group_end_addr_(0), owner_(NULL
), output_section_(NULL
)
2179 if (stub_group_size_
== 1)
2182 if (stubs_always_before_branch_
)
2184 stub_group_size_
= 0x1e00000;
2185 stub14_group_size_
= 0x7800;
2189 stub_group_size_
= 0x1c00000;
2190 stub14_group_size_
= 0x7000;
2192 suppress_size_errors_
= true;
2196 // Return true iff input section can be handled by current stub
2199 can_add_to_stub_group(Output_section
* o
,
2200 const Output_section::Input_section
* i
,
2203 const Output_section::Input_section
*
2209 { return output_section_
; }
2215 FINDING_STUB_SECTION
,
2220 uint32_t stub_group_size_
;
2221 uint32_t stub14_group_size_
;
2222 bool stubs_always_before_branch_
;
2223 bool suppress_size_errors_
;
2224 uint64_t group_end_addr_
;
2225 const Output_section::Input_section
* owner_
;
2226 Output_section
* output_section_
;
2229 // Return true iff input section can be handled by current stub/
2233 Stub_control::can_add_to_stub_group(Output_section
* o
,
2234 const Output_section::Input_section
* i
,
2238 = has14
? this->stub14_group_size_
: this->stub_group_size_
;
2239 bool whole_sec
= o
->order() == ORDER_INIT
|| o
->order() == ORDER_FINI
;
2241 uint64_t start_addr
= o
->address();
2244 // .init and .fini sections are pasted together to form a single
2245 // function. We can't be adding stubs in the middle of the function.
2246 this_size
= o
->data_size();
2249 start_addr
+= i
->relobj()->output_section_offset(i
->shndx());
2250 this_size
= i
->data_size();
2252 uint64_t end_addr
= start_addr
+ this_size
;
2253 bool toobig
= this_size
> group_size
;
2255 if (toobig
&& !this->suppress_size_errors_
)
2256 gold_warning(_("%s:%s exceeds group size"),
2257 i
->relobj()->name().c_str(),
2258 i
->relobj()->section_name(i
->shndx()).c_str());
2260 if (this->state_
!= HAS_STUB_SECTION
2261 && (!whole_sec
|| this->output_section_
!= o
))
2264 this->output_section_
= o
;
2267 if (this->state_
== NO_GROUP
)
2269 this->state_
= FINDING_STUB_SECTION
;
2270 this->group_end_addr_
= end_addr
;
2272 else if (this->group_end_addr_
- start_addr
< group_size
)
2274 // Adding this section would make the group larger than GROUP_SIZE.
2275 else if (this->state_
== FINDING_STUB_SECTION
2276 && !this->stubs_always_before_branch_
2279 // But wait, there's more! Input sections up to GROUP_SIZE
2280 // bytes before the stub table can be handled by it too.
2281 this->state_
= HAS_STUB_SECTION
;
2282 this->group_end_addr_
= end_addr
;
2286 this->state_
= NO_GROUP
;
2292 // Look over all the input sections, deciding where to place stubs.
2294 template<int size
, bool big_endian
>
2296 Target_powerpc
<size
, big_endian
>::group_sections(Layout
* layout
,
2299 Stub_control
stub_control(parameters
->options().stub_group_size());
2301 // Group input sections and insert stub table
2302 Stub_table
<size
, big_endian
>* stub_table
= NULL
;
2303 Layout::Section_list section_list
;
2304 layout
->get_executable_sections(§ion_list
);
2305 std::stable_sort(section_list
.begin(), section_list
.end(), Sort_sections());
2306 for (Layout::Section_list::reverse_iterator o
= section_list
.rbegin();
2307 o
!= section_list
.rend();
2310 typedef Output_section::Input_section_list Input_section_list
;
2311 for (Input_section_list::const_reverse_iterator i
2312 = (*o
)->input_sections().rbegin();
2313 i
!= (*o
)->input_sections().rend();
2316 if (i
->is_input_section())
2318 Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
2319 <Powerpc_relobj
<size
, big_endian
>*>(i
->relobj());
2320 bool has14
= ppcobj
->has_14bit_branch(i
->shndx());
2321 if (!stub_control
.can_add_to_stub_group(*o
, &*i
, has14
))
2323 stub_table
->init(stub_control
.owner(),
2324 stub_control
.output_section());
2327 if (stub_table
== NULL
)
2328 stub_table
= this->new_stub_table();
2329 ppcobj
->set_stub_table(i
->shndx(), stub_table
);
2333 if (stub_table
!= NULL
)
2334 stub_table
->init(stub_control
.owner(), stub_control
.output_section());
2337 // If this branch needs a plt call stub, or a long branch stub, make one.
2339 template<int size
, bool big_endian
>
2341 Target_powerpc
<size
, big_endian
>::Branch_info::make_stub(
2342 Stub_table
<size
, big_endian
>* stub_table
,
2343 Stub_table
<size
, big_endian
>* ifunc_stub_table
,
2344 Symbol_table
* symtab
) const
2346 Symbol
* sym
= this->object_
->global_symbol(this->r_sym_
);
2347 if (sym
!= NULL
&& sym
->is_forwarder())
2348 sym
= symtab
->resolve_forwards(sym
);
2349 const Sized_symbol
<size
>* gsym
= static_cast<const Sized_symbol
<size
>*>(sym
);
2351 ? use_plt_offset
<size
>(gsym
, Scan::get_reference_flags(this->r_type_
))
2352 : this->object_
->local_has_plt_offset(this->r_sym_
))
2354 if (stub_table
== NULL
)
2355 stub_table
= this->object_
->stub_table(this->shndx_
);
2356 if (stub_table
== NULL
)
2358 // This is a ref from a data section to an ifunc symbol.
2359 stub_table
= ifunc_stub_table
;
2361 gold_assert(stub_table
!= NULL
);
2363 stub_table
->add_plt_call_entry(this->object_
, gsym
,
2364 this->r_type_
, this->addend_
);
2366 stub_table
->add_plt_call_entry(this->object_
, this->r_sym_
,
2367 this->r_type_
, this->addend_
);
2371 unsigned int max_branch_offset
;
2372 if (this->r_type_
== elfcpp::R_POWERPC_REL14
2373 || this->r_type_
== elfcpp::R_POWERPC_REL14_BRTAKEN
2374 || this->r_type_
== elfcpp::R_POWERPC_REL14_BRNTAKEN
)
2375 max_branch_offset
= 1 << 15;
2376 else if (this->r_type_
== elfcpp::R_POWERPC_REL24
2377 || this->r_type_
== elfcpp::R_PPC_PLTREL24
2378 || this->r_type_
== elfcpp::R_PPC_LOCAL24PC
)
2379 max_branch_offset
= 1 << 25;
2382 Address from
= this->object_
->get_output_section_offset(this->shndx_
);
2383 gold_assert(from
!= invalid_address
);
2384 from
+= (this->object_
->output_section(this->shndx_
)->address()
2389 switch (gsym
->source())
2391 case Symbol::FROM_OBJECT
:
2393 Object
* symobj
= gsym
->object();
2394 if (symobj
->is_dynamic()
2395 || symobj
->pluginobj() != NULL
)
2398 unsigned int shndx
= gsym
->shndx(&is_ordinary
);
2399 if (shndx
== elfcpp::SHN_UNDEF
)
2404 case Symbol::IS_UNDEFINED
:
2410 Symbol_table::Compute_final_value_status status
;
2411 to
= symtab
->compute_final_value
<size
>(gsym
, &status
);
2412 if (status
!= Symbol_table::CFVS_OK
)
2417 const Symbol_value
<size
>* psymval
2418 = this->object_
->local_symbol(this->r_sym_
);
2419 Symbol_value
<size
> symval
;
2420 typedef Sized_relobj_file
<size
, big_endian
> ObjType
;
2421 typename
ObjType::Compute_final_local_value_status status
2422 = this->object_
->compute_final_local_value(this->r_sym_
, psymval
,
2424 if (status
!= ObjType::CFLV_OK
2425 || !symval
.has_output_value())
2427 to
= symval
.value(this->object_
, 0);
2429 to
+= this->addend_
;
2430 if (stub_table
== NULL
)
2431 stub_table
= this->object_
->stub_table(this->shndx_
);
2432 gold_assert(stub_table
!= NULL
);
2433 if (size
== 64 && is_branch_reloc(this->r_type_
))
2435 unsigned int dest_shndx
;
2436 to
= stub_table
->targ()->symval_for_branch(symtab
, to
, gsym
,
2440 Address delta
= to
- from
;
2441 if (delta
+ max_branch_offset
>= 2 * max_branch_offset
)
2443 stub_table
->add_long_branch_entry(this->object_
, to
);
2448 // Relaxation hook. This is where we do stub generation.
2450 template<int size
, bool big_endian
>
2452 Target_powerpc
<size
, big_endian
>::do_relax(int pass
,
2453 const Input_objects
*,
2454 Symbol_table
* symtab
,
2458 unsigned int prev_brlt_size
= 0;
2461 bool thread_safe
= parameters
->options().plt_thread_safe();
2462 if (size
== 64 && !parameters
->options().user_set_plt_thread_safe())
2464 static const char* const thread_starter
[] =
2468 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
2470 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
2471 "mq_notify", "create_timer",
2475 "GOMP_parallel_start",
2476 "GOMP_parallel_loop_static_start",
2477 "GOMP_parallel_loop_dynamic_start",
2478 "GOMP_parallel_loop_guided_start",
2479 "GOMP_parallel_loop_runtime_start",
2480 "GOMP_parallel_sections_start",
2483 if (parameters
->options().shared())
2487 for (unsigned int i
= 0;
2488 i
< sizeof(thread_starter
) / sizeof(thread_starter
[0]);
2491 Symbol
* sym
= symtab
->lookup(thread_starter
[i
], NULL
);
2492 thread_safe
= (sym
!= NULL
2494 && sym
->in_real_elf());
2500 this->plt_thread_safe_
= thread_safe
;
2501 this->group_sections(layout
, task
);
2504 // We need address of stub tables valid for make_stub.
2505 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
2506 p
!= this->stub_tables_
.end();
2509 const Powerpc_relobj
<size
, big_endian
>* object
2510 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>((*p
)->relobj());
2511 Address off
= object
->get_output_section_offset((*p
)->shndx());
2512 gold_assert(off
!= invalid_address
);
2513 Output_section
* os
= (*p
)->output_section();
2514 (*p
)->set_address_and_size(os
, off
);
2519 // Clear plt call stubs, long branch stubs and branch lookup table.
2520 prev_brlt_size
= this->branch_lookup_table_
.size();
2521 this->branch_lookup_table_
.clear();
2522 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
2523 p
!= this->stub_tables_
.end();
2526 (*p
)->clear_stubs();
2530 // Build all the stubs.
2531 Stub_table
<size
, big_endian
>* ifunc_stub_table
2532 = this->stub_tables_
.size() == 0 ? NULL
: this->stub_tables_
[0];
2533 Stub_table
<size
, big_endian
>* one_stub_table
2534 = this->stub_tables_
.size() != 1 ? NULL
: ifunc_stub_table
;
2535 for (typename
Branches::const_iterator b
= this->branch_info_
.begin();
2536 b
!= this->branch_info_
.end();
2539 b
->make_stub(one_stub_table
, ifunc_stub_table
, symtab
);
2542 // Did anything change size?
2543 unsigned int num_huge_branches
= this->branch_lookup_table_
.size();
2544 bool again
= num_huge_branches
!= prev_brlt_size
;
2545 if (size
== 64 && num_huge_branches
!= 0)
2546 this->make_brlt_section(layout
);
2547 if (size
== 64 && again
)
2548 this->brlt_section_
->set_current_size(num_huge_branches
);
2550 typedef Unordered_set
<Output_section
*> Output_sections
;
2551 Output_sections os_need_update
;
2552 for (typename
Stub_tables::iterator p
= this->stub_tables_
.begin();
2553 p
!= this->stub_tables_
.end();
2556 if ((*p
)->size_update())
2559 (*p
)->add_eh_frame(layout
);
2560 os_need_update
.insert((*p
)->output_section());
2564 // Set output section offsets for all input sections in an output
2565 // section that just changed size. Anything past the stubs will
2567 for (typename
Output_sections::iterator p
= os_need_update
.begin();
2568 p
!= os_need_update
.end();
2571 Output_section
* os
= *p
;
2573 typedef Output_section::Input_section_list Input_section_list
;
2574 for (Input_section_list::const_iterator i
= os
->input_sections().begin();
2575 i
!= os
->input_sections().end();
2578 off
= align_address(off
, i
->addralign());
2579 if (i
->is_input_section() || i
->is_relaxed_input_section())
2580 i
->relobj()->set_section_offset(i
->shndx(), off
);
2581 if (i
->is_relaxed_input_section())
2583 Stub_table
<size
, big_endian
>* stub_table
2584 = static_cast<Stub_table
<size
, big_endian
>*>(
2585 i
->relaxed_input_section());
2586 off
+= stub_table
->set_address_and_size(os
, off
);
2589 off
+= i
->data_size();
2591 // If .brlt is part of this output section, then we have just
2592 // done the offset adjustment.
2593 os
->clear_section_offsets_need_adjustment();
2598 && num_huge_branches
!= 0
2599 && parameters
->options().output_is_position_independent())
2601 // Fill in the BRLT relocs.
2602 this->brlt_section_
->reset_data_size();
2603 for (typename
Branch_lookup_table::const_iterator p
2604 = this->branch_lookup_table_
.begin();
2605 p
!= this->branch_lookup_table_
.end();
2608 this->brlt_section_
->add_reloc(p
->first
, p
->second
);
2610 this->brlt_section_
->finalize_data_size();
2615 template<int size
, bool big_endian
>
2617 Target_powerpc
<size
, big_endian
>::do_plt_fde_location(const Output_data
* plt
,
2618 unsigned char* oview
,
2622 uint64_t address
= plt
->address();
2623 off_t len
= plt
->data_size();
2625 if (plt
== this->glink_
)
2627 // See Output_data_glink::do_write() for glink contents.
2630 // There is one word before __glink_PLTresolve
2634 else if (parameters
->options().output_is_position_independent())
2636 // There are two FDEs for a position independent glink.
2637 // The first covers the branch table, the second
2638 // __glink_PLTresolve at the end of glink.
2639 off_t resolve_size
= this->glink_
->pltresolve_size
;
2641 len
-= resolve_size
;
2644 address
+= len
- resolve_size
;
2651 // Must be a stub table.
2652 const Stub_table
<size
, big_endian
>* stub_table
2653 = static_cast<const Stub_table
<size
, big_endian
>*>(plt
);
2654 uint64_t stub_address
= stub_table
->stub_address();
2655 len
-= stub_address
- address
;
2656 address
= stub_address
;
2659 *paddress
= address
;
2663 // A class to handle the PLT data.
2665 template<int size
, bool big_endian
>
2666 class Output_data_plt_powerpc
: public Output_section_data_build
2669 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true,
2670 size
, big_endian
> Reloc_section
;
2672 Output_data_plt_powerpc(Target_powerpc
<size
, big_endian
>* targ
,
2673 Reloc_section
* plt_rel
,
2674 unsigned int reserved_size
,
2676 : Output_section_data_build(size
== 32 ? 4 : 8),
2679 initial_plt_entry_size_(reserved_size
),
2683 // Add an entry to the PLT.
2688 add_ifunc_entry(Symbol
*);
2691 add_local_ifunc_entry(Sized_relobj_file
<size
, big_endian
>*, unsigned int);
2693 // Return the .rela.plt section data.
2700 // Return the number of PLT entries.
2704 if (this->current_data_size() == 0)
2706 return ((this->current_data_size() - this->initial_plt_entry_size_
)
2710 // Return the offset of the first non-reserved PLT entry.
2712 first_plt_entry_offset()
2713 { return this->initial_plt_entry_size_
; }
2715 // Return the size of a PLT entry.
2717 get_plt_entry_size()
2718 { return plt_entry_size
; }
2722 do_adjust_output_section(Output_section
* os
)
2727 // Write to a map file.
2729 do_print_to_mapfile(Mapfile
* mapfile
) const
2730 { mapfile
->print_output_data(this, this->name_
); }
2733 // The size of an entry in the PLT.
2734 static const int plt_entry_size
= size
== 32 ? 4 : 24;
2736 // Write out the PLT data.
2738 do_write(Output_file
*);
2740 // The reloc section.
2741 Reloc_section
* rel_
;
2742 // Allows access to .glink for do_write.
2743 Target_powerpc
<size
, big_endian
>* targ_
;
2744 // The size of the first reserved entry.
2745 int initial_plt_entry_size_
;
2746 // What to report in map file.
2750 // Add an entry to the PLT.
2752 template<int size
, bool big_endian
>
2754 Output_data_plt_powerpc
<size
, big_endian
>::add_entry(Symbol
* gsym
)
2756 if (!gsym
->has_plt_offset())
2758 section_size_type off
= this->current_data_size();
2760 off
+= this->first_plt_entry_offset();
2761 gsym
->set_plt_offset(off
);
2762 gsym
->set_needs_dynsym_entry();
2763 unsigned int dynrel
= elfcpp::R_POWERPC_JMP_SLOT
;
2764 this->rel_
->add_global(gsym
, dynrel
, this, off
, 0);
2765 off
+= plt_entry_size
;
2766 this->set_current_data_size(off
);
2770 // Add an entry for a global ifunc symbol that resolves locally, to the IPLT.
2772 template<int size
, bool big_endian
>
2774 Output_data_plt_powerpc
<size
, big_endian
>::add_ifunc_entry(Symbol
* gsym
)
2776 if (!gsym
->has_plt_offset())
2778 section_size_type off
= this->current_data_size();
2779 gsym
->set_plt_offset(off
);
2780 unsigned int dynrel
= elfcpp::R_POWERPC_IRELATIVE
;
2782 dynrel
= elfcpp::R_PPC64_JMP_IREL
;
2783 this->rel_
->add_symbolless_global_addend(gsym
, dynrel
, this, off
, 0);
2784 off
+= plt_entry_size
;
2785 this->set_current_data_size(off
);
2789 // Add an entry for a local ifunc symbol to the IPLT.
2791 template<int size
, bool big_endian
>
2793 Output_data_plt_powerpc
<size
, big_endian
>::add_local_ifunc_entry(
2794 Sized_relobj_file
<size
, big_endian
>* relobj
,
2795 unsigned int local_sym_index
)
2797 if (!relobj
->local_has_plt_offset(local_sym_index
))
2799 section_size_type off
= this->current_data_size();
2800 relobj
->set_local_plt_offset(local_sym_index
, off
);
2801 unsigned int dynrel
= elfcpp::R_POWERPC_IRELATIVE
;
2803 dynrel
= elfcpp::R_PPC64_JMP_IREL
;
2804 this->rel_
->add_symbolless_local_addend(relobj
, local_sym_index
, dynrel
,
2806 off
+= plt_entry_size
;
2807 this->set_current_data_size(off
);
2811 static const uint32_t add_0_11_11
= 0x7c0b5a14;
2812 static const uint32_t add_2_2_11
= 0x7c425a14;
2813 static const uint32_t add_3_3_2
= 0x7c631214;
2814 static const uint32_t add_3_3_13
= 0x7c636a14;
2815 static const uint32_t add_11_0_11
= 0x7d605a14;
2816 static const uint32_t add_12_2_11
= 0x7d825a14;
2817 static const uint32_t add_12_12_11
= 0x7d8c5a14;
2818 static const uint32_t addi_11_11
= 0x396b0000;
2819 static const uint32_t addi_12_12
= 0x398c0000;
2820 static const uint32_t addi_2_2
= 0x38420000;
2821 static const uint32_t addi_3_2
= 0x38620000;
2822 static const uint32_t addi_3_3
= 0x38630000;
2823 static const uint32_t addis_0_2
= 0x3c020000;
2824 static const uint32_t addis_0_13
= 0x3c0d0000;
2825 static const uint32_t addis_11_11
= 0x3d6b0000;
2826 static const uint32_t addis_11_30
= 0x3d7e0000;
2827 static const uint32_t addis_12_12
= 0x3d8c0000;
2828 static const uint32_t addis_12_2
= 0x3d820000;
2829 static const uint32_t addis_3_2
= 0x3c620000;
2830 static const uint32_t addis_3_13
= 0x3c6d0000;
2831 static const uint32_t b
= 0x48000000;
2832 static const uint32_t bcl_20_31
= 0x429f0005;
2833 static const uint32_t bctr
= 0x4e800420;
2834 static const uint32_t blr
= 0x4e800020;
2835 static const uint32_t blrl
= 0x4e800021;
2836 static const uint32_t bnectr_p4
= 0x4ce20420;
2837 static const uint32_t cmpldi_2_0
= 0x28220000;
2838 static const uint32_t cror_15_15_15
= 0x4def7b82;
2839 static const uint32_t cror_31_31_31
= 0x4ffffb82;
2840 static const uint32_t ld_0_1
= 0xe8010000;
2841 static const uint32_t ld_0_12
= 0xe80c0000;
2842 static const uint32_t ld_11_12
= 0xe96c0000;
2843 static const uint32_t ld_11_2
= 0xe9620000;
2844 static const uint32_t ld_2_1
= 0xe8410000;
2845 static const uint32_t ld_2_11
= 0xe84b0000;
2846 static const uint32_t ld_2_12
= 0xe84c0000;
2847 static const uint32_t ld_2_2
= 0xe8420000;
2848 static const uint32_t lfd_0_1
= 0xc8010000;
2849 static const uint32_t li_0_0
= 0x38000000;
2850 static const uint32_t li_12_0
= 0x39800000;
2851 static const uint32_t lis_0_0
= 0x3c000000;
2852 static const uint32_t lis_11
= 0x3d600000;
2853 static const uint32_t lis_12
= 0x3d800000;
2854 static const uint32_t lwz_0_12
= 0x800c0000;
2855 static const uint32_t lwz_11_11
= 0x816b0000;
2856 static const uint32_t lwz_11_30
= 0x817e0000;
2857 static const uint32_t lwz_12_12
= 0x818c0000;
2858 static const uint32_t lwzu_0_12
= 0x840c0000;
2859 static const uint32_t lvx_0_12_0
= 0x7c0c00ce;
2860 static const uint32_t mflr_0
= 0x7c0802a6;
2861 static const uint32_t mflr_11
= 0x7d6802a6;
2862 static const uint32_t mflr_12
= 0x7d8802a6;
2863 static const uint32_t mtctr_0
= 0x7c0903a6;
2864 static const uint32_t mtctr_11
= 0x7d6903a6;
2865 static const uint32_t mtctr_12
= 0x7d8903a6;
2866 static const uint32_t mtlr_0
= 0x7c0803a6;
2867 static const uint32_t mtlr_12
= 0x7d8803a6;
2868 static const uint32_t nop
= 0x60000000;
2869 static const uint32_t ori_0_0_0
= 0x60000000;
2870 static const uint32_t std_0_1
= 0xf8010000;
2871 static const uint32_t std_0_12
= 0xf80c0000;
2872 static const uint32_t std_2_1
= 0xf8410000;
2873 static const uint32_t stfd_0_1
= 0xd8010000;
2874 static const uint32_t stvx_0_12_0
= 0x7c0c01ce;
2875 static const uint32_t sub_11_11_12
= 0x7d6c5850;
2876 static const uint32_t xor_11_11_11
= 0x7d6b5a78;
2878 // Write out the PLT.
2880 template<int size
, bool big_endian
>
2882 Output_data_plt_powerpc
<size
, big_endian
>::do_write(Output_file
* of
)
2884 if (size
== 32 && this->name_
[3] != 'I')
2886 const section_size_type offset
= this->offset();
2887 const section_size_type oview_size
2888 = convert_to_section_size_type(this->data_size());
2889 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
2890 unsigned char* pov
= oview
;
2891 unsigned char* endpov
= oview
+ oview_size
;
2893 // The address of the .glink branch table
2894 const Output_data_glink
<size
, big_endian
>* glink
2895 = this->targ_
->glink_section();
2896 elfcpp::Elf_types
<32>::Elf_Addr branch_tab
= glink
->address();
2898 while (pov
< endpov
)
2900 elfcpp::Swap
<32, big_endian
>::writeval(pov
, branch_tab
);
2905 of
->write_output_view(offset
, oview_size
, oview
);
2909 // Create the PLT section.
2911 template<int size
, bool big_endian
>
2913 Target_powerpc
<size
, big_endian
>::make_plt_section(Symbol_table
* symtab
,
2916 if (this->plt_
== NULL
)
2918 if (this->got_
== NULL
)
2919 this->got_section(symtab
, layout
);
2921 if (this->glink_
== NULL
)
2922 make_glink_section(layout
);
2924 // Ensure that .rela.dyn always appears before .rela.plt This is
2925 // necessary due to how, on PowerPC and some other targets, .rela.dyn
2926 // needs to include .rela.plt in its range.
2927 this->rela_dyn_section(layout
);
2929 Reloc_section
* plt_rel
= new Reloc_section(false);
2930 layout
->add_output_section_data(".rela.plt", elfcpp::SHT_RELA
,
2931 elfcpp::SHF_ALLOC
, plt_rel
,
2932 ORDER_DYNAMIC_PLT_RELOCS
, false);
2934 = new Output_data_plt_powerpc
<size
, big_endian
>(this, plt_rel
,
2935 size
== 32 ? 0 : 24,
2937 layout
->add_output_section_data(".plt",
2939 ? elfcpp::SHT_PROGBITS
2940 : elfcpp::SHT_NOBITS
),
2941 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
2950 // Create the IPLT section.
2952 template<int size
, bool big_endian
>
2954 Target_powerpc
<size
, big_endian
>::make_iplt_section(Symbol_table
* symtab
,
2957 if (this->iplt_
== NULL
)
2959 this->make_plt_section(symtab
, layout
);
2961 Reloc_section
* iplt_rel
= new Reloc_section(false);
2962 this->rela_dyn_
->output_section()->add_output_section_data(iplt_rel
);
2964 = new Output_data_plt_powerpc
<size
, big_endian
>(this, iplt_rel
,
2966 this->plt_
->output_section()->add_output_section_data(this->iplt_
);
2970 // A section for huge long branch addresses, similar to plt section.
2972 template<int size
, bool big_endian
>
2973 class Output_data_brlt_powerpc
: public Output_section_data_build
2976 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
2977 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true,
2978 size
, big_endian
> Reloc_section
;
2980 Output_data_brlt_powerpc(Target_powerpc
<size
, big_endian
>* targ
,
2981 Reloc_section
* brlt_rel
)
2982 : Output_section_data_build(size
== 32 ? 4 : 8),
2987 // Add a reloc for an entry in the BRLT.
2989 add_reloc(Address to
, unsigned int off
)
2990 { this->rel_
->add_relative(elfcpp::R_POWERPC_RELATIVE
, this, off
, to
); }
2992 // Update section and reloc section size.
2994 set_current_size(unsigned int num_branches
)
2996 this->reset_address_and_file_offset();
2997 this->set_current_data_size(num_branches
* 16);
2998 this->finalize_data_size();
2999 Output_section
* os
= this->output_section();
3000 os
->set_section_offsets_need_adjustment();
3001 if (this->rel_
!= NULL
)
3003 unsigned int reloc_size
3004 = Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
3005 this->rel_
->reset_address_and_file_offset();
3006 this->rel_
->set_current_data_size(num_branches
* reloc_size
);
3007 this->rel_
->finalize_data_size();
3008 Output_section
* os
= this->rel_
->output_section();
3009 os
->set_section_offsets_need_adjustment();
3015 do_adjust_output_section(Output_section
* os
)
3020 // Write to a map file.
3022 do_print_to_mapfile(Mapfile
* mapfile
) const
3023 { mapfile
->print_output_data(this, "** BRLT"); }
3026 // Write out the BRLT data.
3028 do_write(Output_file
*);
3030 // The reloc section.
3031 Reloc_section
* rel_
;
3032 Target_powerpc
<size
, big_endian
>* targ_
;
3035 // Make the branch lookup table section.
3037 template<int size
, bool big_endian
>
3039 Target_powerpc
<size
, big_endian
>::make_brlt_section(Layout
* layout
)
3041 if (size
== 64 && this->brlt_section_
== NULL
)
3043 Reloc_section
* brlt_rel
= NULL
;
3044 bool is_pic
= parameters
->options().output_is_position_independent();
3047 // When PIC we can't fill in .brlt (like .plt it can be a
3048 // bss style section) but must initialise at runtime via
3049 // dynamic relocats.
3050 this->rela_dyn_section(layout
);
3051 brlt_rel
= new Reloc_section(false);
3052 this->rela_dyn_
->output_section()->add_output_section_data(brlt_rel
);
3055 = new Output_data_brlt_powerpc
<size
, big_endian
>(this, brlt_rel
);
3056 if (this->plt_
&& is_pic
)
3057 this->plt_
->output_section()
3058 ->add_output_section_data(this->brlt_section_
);
3060 layout
->add_output_section_data(".brlt",
3061 (is_pic
? elfcpp::SHT_NOBITS
3062 : elfcpp::SHT_PROGBITS
),
3063 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
3064 this->brlt_section_
,
3065 (is_pic
? ORDER_SMALL_BSS
3066 : ORDER_SMALL_DATA
),
3071 // Write out .brlt when non-PIC.
3073 template<int size
, bool big_endian
>
3075 Output_data_brlt_powerpc
<size
, big_endian
>::do_write(Output_file
* of
)
3077 if (size
== 64 && !parameters
->options().output_is_position_independent())
3079 const section_size_type offset
= this->offset();
3080 const section_size_type oview_size
3081 = convert_to_section_size_type(this->data_size());
3082 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
3084 this->targ_
->write_branch_lookup_table(oview
);
3085 of
->write_output_view(offset
, oview_size
, oview
);
3089 static inline uint32_t
3095 static inline uint32_t
3101 static inline uint32_t
3104 return hi(a
+ 0x8000);
3110 static const unsigned char eh_frame_cie
[12];
3114 const unsigned char Eh_cie
<size
>::eh_frame_cie
[] =
3117 'z', 'R', 0, // Augmentation string.
3118 4, // Code alignment.
3119 0x80 - size
/ 8 , // Data alignment.
3121 1, // Augmentation size.
3122 (elfcpp::DW_EH_PE_pcrel
3123 | elfcpp::DW_EH_PE_sdata4
), // FDE encoding.
3124 elfcpp::DW_CFA_def_cfa
, 1, 0 // def_cfa: r1 offset 0.
3127 // Describe __glink_PLTresolve use of LR, 64-bit version.
3128 static const unsigned char glink_eh_frame_fde_64
[] =
3130 0, 0, 0, 0, // Replaced with offset to .glink.
3131 0, 0, 0, 0, // Replaced with size of .glink.
3132 0, // Augmentation size.
3133 elfcpp::DW_CFA_advance_loc
+ 1,
3134 elfcpp::DW_CFA_register
, 65, 12,
3135 elfcpp::DW_CFA_advance_loc
+ 4,
3136 elfcpp::DW_CFA_restore_extended
, 65
3139 // Describe __glink_PLTresolve use of LR, 32-bit version.
3140 static const unsigned char glink_eh_frame_fde_32
[] =
3142 0, 0, 0, 0, // Replaced with offset to .glink.
3143 0, 0, 0, 0, // Replaced with size of .glink.
3144 0, // Augmentation size.
3145 elfcpp::DW_CFA_advance_loc
+ 2,
3146 elfcpp::DW_CFA_register
, 65, 0,
3147 elfcpp::DW_CFA_advance_loc
+ 4,
3148 elfcpp::DW_CFA_restore_extended
, 65
3151 static const unsigned char default_fde
[] =
3153 0, 0, 0, 0, // Replaced with offset to stubs.
3154 0, 0, 0, 0, // Replaced with size of stubs.
3155 0, // Augmentation size.
3156 elfcpp::DW_CFA_nop
, // Pad.
3161 template<bool big_endian
>
3163 write_insn(unsigned char* p
, uint32_t v
)
3165 elfcpp::Swap
<32, big_endian
>::writeval(p
, v
);
3168 // Stub_table holds information about plt and long branch stubs.
3169 // Stubs are built in an area following some input section determined
3170 // by group_sections(). This input section is converted to a relaxed
3171 // input section allowing it to be resized to accommodate the stubs
3173 template<int size
, bool big_endian
>
3174 class Stub_table
: public Output_relaxed_input_section
3177 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
3178 static const Address invalid_address
= static_cast<Address
>(0) - 1;
3180 Stub_table(Target_powerpc
<size
, big_endian
>* targ
)
3181 : Output_relaxed_input_section(NULL
, 0, 0),
3182 targ_(targ
), plt_call_stubs_(), long_branch_stubs_(),
3183 orig_data_size_(0), plt_size_(0), last_plt_size_(0),
3184 branch_size_(0), last_branch_size_(0), eh_frame_added_(false)
3187 // Delayed Output_relaxed_input_section init.
3189 init(const Output_section::Input_section
*, Output_section
*);
3191 // Add a plt call stub.
3193 add_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3199 add_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3204 // Find a given plt call stub.
3206 find_plt_call_entry(const Symbol
*) const;
3209 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3210 unsigned int) const;
3213 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3219 find_plt_call_entry(const Sized_relobj_file
<size
, big_endian
>*,
3224 // Add a long branch stub.
3226 add_long_branch_entry(const Powerpc_relobj
<size
, big_endian
>*, Address
);
3229 find_long_branch_entry(const Powerpc_relobj
<size
, big_endian
>*,
3235 this->plt_call_stubs_
.clear();
3236 this->plt_size_
= 0;
3237 this->long_branch_stubs_
.clear();
3238 this->branch_size_
= 0;
3242 set_address_and_size(const Output_section
* os
, Address off
)
3244 Address start_off
= off
;
3245 off
+= this->orig_data_size_
;
3246 Address my_size
= this->plt_size_
+ this->branch_size_
;
3248 off
= align_address(off
, this->stub_align());
3249 // Include original section size and alignment padding in size
3250 my_size
+= off
- start_off
;
3251 this->reset_address_and_file_offset();
3252 this->set_current_data_size(my_size
);
3253 this->set_address_and_file_offset(os
->address() + start_off
,
3254 os
->offset() + start_off
);
3259 stub_address() const
3261 return align_address(this->address() + this->orig_data_size_
,
3262 this->stub_align());
3268 return align_address(this->offset() + this->orig_data_size_
,
3269 this->stub_align());
3274 { return this->plt_size_
; }
3279 Output_section
* os
= this->output_section();
3280 if (os
->addralign() < this->stub_align())
3282 os
->set_addralign(this->stub_align());
3283 // FIXME: get rid of the insane checkpointing.
3284 // We can't increase alignment of the input section to which
3285 // stubs are attached; The input section may be .init which
3286 // is pasted together with other .init sections to form a
3287 // function. Aligning might insert zero padding resulting in
3288 // sigill. However we do need to increase alignment of the
3289 // output section so that the align_address() on offset in
3290 // set_address_and_size() adds the same padding as the
3291 // align_address() on address in stub_address().
3292 // What's more, we need this alignment for the layout done in
3293 // relaxation_loop_body() so that the output section starts at
3294 // a suitably aligned address.
3295 os
->checkpoint_set_addralign(this->stub_align());
3297 if (this->last_plt_size_
!= this->plt_size_
3298 || this->last_branch_size_
!= this->branch_size_
)
3300 this->last_plt_size_
= this->plt_size_
;
3301 this->last_branch_size_
= this->branch_size_
;
3307 // Add .eh_frame info for this stub section. Unlike other linker
3308 // generated .eh_frame this is added late in the link, because we
3309 // only want the .eh_frame info if this particular stub section is
3312 add_eh_frame(Layout
* layout
)
3314 if (!this->eh_frame_added_
)
3316 if (!parameters
->options().ld_generated_unwind_info())
3319 // Since we add stub .eh_frame info late, it must be placed
3320 // after all other linker generated .eh_frame info so that
3321 // merge mapping need not be updated for input sections.
3322 // There is no provision to use a different CIE to that used
3324 if (!this->targ_
->has_glink())
3327 layout
->add_eh_frame_for_plt(this,
3328 Eh_cie
<size
>::eh_frame_cie
,
3329 sizeof (Eh_cie
<size
>::eh_frame_cie
),
3331 sizeof (default_fde
));
3332 this->eh_frame_added_
= true;
3336 Target_powerpc
<size
, big_endian
>*
3342 class Plt_stub_ent_hash
;
3343 typedef Unordered_map
<Plt_stub_ent
, unsigned int,
3344 Plt_stub_ent_hash
> Plt_stub_entries
;
3346 // Alignment of stub section.
3352 unsigned int min_align
= 32;
3353 unsigned int user_align
= 1 << parameters
->options().plt_align();
3354 return std::max(user_align
, min_align
);
3357 // Return the plt offset for the given call stub.
3359 plt_off(typename
Plt_stub_entries::const_iterator p
, bool* is_iplt
) const
3361 const Symbol
* gsym
= p
->first
.sym_
;
3364 *is_iplt
= (gsym
->type() == elfcpp::STT_GNU_IFUNC
3365 && gsym
->can_use_relative_reloc(false));
3366 return gsym
->plt_offset();
3371 const Sized_relobj_file
<size
, big_endian
>* relobj
= p
->first
.object_
;
3372 unsigned int local_sym_index
= p
->first
.locsym_
;
3373 return relobj
->local_plt_offset(local_sym_index
);
3377 // Size of a given plt call stub.
3379 plt_call_size(typename
Plt_stub_entries::const_iterator p
) const
3385 Address plt_addr
= this->plt_off(p
, &is_iplt
);
3387 plt_addr
+= this->targ_
->iplt_section()->address();
3389 plt_addr
+= this->targ_
->plt_section()->address();
3390 Address got_addr
= this->targ_
->got_section()->output_section()->address();
3391 const Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
3392 <const Powerpc_relobj
<size
, big_endian
>*>(p
->first
.object_
);
3393 got_addr
+= ppcobj
->toc_base_offset();
3394 Address off
= plt_addr
- got_addr
;
3395 bool static_chain
= parameters
->options().plt_static_chain();
3396 bool thread_safe
= this->targ_
->plt_thread_safe();
3397 unsigned int bytes
= (4 * 5
3400 + 4 * (ha(off
) != 0)
3401 + 4 * (ha(off
+ 8 + 8 * static_chain
) != ha(off
)));
3402 unsigned int align
= 1 << parameters
->options().plt_align();
3404 bytes
= (bytes
+ align
- 1) & -align
;
3408 // Return long branch stub size.
3410 branch_stub_size(Address to
)
3413 = this->stub_address() + this->last_plt_size_
+ this->branch_size_
;
3414 if (to
- loc
+ (1 << 25) < 2 << 25)
3416 if (size
== 64 || !parameters
->options().output_is_position_independent())
3423 do_write(Output_file
*);
3425 // Plt call stub keys.
3429 Plt_stub_ent(const Symbol
* sym
)
3430 : sym_(sym
), object_(0), addend_(0), locsym_(0)
3433 Plt_stub_ent(const Sized_relobj_file
<size
, big_endian
>* object
,
3434 unsigned int locsym_index
)
3435 : sym_(NULL
), object_(object
), addend_(0), locsym_(locsym_index
)
3438 Plt_stub_ent(const Sized_relobj_file
<size
, big_endian
>* object
,
3440 unsigned int r_type
,
3442 : sym_(sym
), object_(0), addend_(0), locsym_(0)
3445 this->addend_
= addend
;
3446 else if (parameters
->options().output_is_position_independent()
3447 && r_type
== elfcpp::R_PPC_PLTREL24
)
3449 this->addend_
= addend
;
3450 if (this->addend_
>= 32768)
3451 this->object_
= object
;
3455 Plt_stub_ent(const Sized_relobj_file
<size
, big_endian
>* object
,
3456 unsigned int locsym_index
,
3457 unsigned int r_type
,
3459 : sym_(NULL
), object_(object
), addend_(0), locsym_(locsym_index
)
3462 this->addend_
= addend
;
3463 else if (parameters
->options().output_is_position_independent()
3464 && r_type
== elfcpp::R_PPC_PLTREL24
)
3465 this->addend_
= addend
;
3468 bool operator==(const Plt_stub_ent
& that
) const
3470 return (this->sym_
== that
.sym_
3471 && this->object_
== that
.object_
3472 && this->addend_
== that
.addend_
3473 && this->locsym_
== that
.locsym_
);
3477 const Sized_relobj_file
<size
, big_endian
>* object_
;
3478 typename
elfcpp::Elf_types
<size
>::Elf_Addr addend_
;
3479 unsigned int locsym_
;
3482 class Plt_stub_ent_hash
3485 size_t operator()(const Plt_stub_ent
& ent
) const
3487 return (reinterpret_cast<uintptr_t>(ent
.sym_
)
3488 ^ reinterpret_cast<uintptr_t>(ent
.object_
)
3494 // Long branch stub keys.
3495 class Branch_stub_ent
3498 Branch_stub_ent(const Powerpc_relobj
<size
, big_endian
>* obj
, Address to
)
3499 : dest_(to
), toc_base_off_(0)
3502 toc_base_off_
= obj
->toc_base_offset();
3505 bool operator==(const Branch_stub_ent
& that
) const
3507 return (this->dest_
== that
.dest_
3509 || this->toc_base_off_
== that
.toc_base_off_
));
3513 unsigned int toc_base_off_
;
3516 class Branch_stub_ent_hash
3519 size_t operator()(const Branch_stub_ent
& ent
) const
3520 { return ent
.dest_
^ ent
.toc_base_off_
; }
3523 // In a sane world this would be a global.
3524 Target_powerpc
<size
, big_endian
>* targ_
;
3525 // Map sym/object/addend to stub offset.
3526 Plt_stub_entries plt_call_stubs_
;
3527 // Map destination address to stub offset.
3528 typedef Unordered_map
<Branch_stub_ent
, unsigned int,
3529 Branch_stub_ent_hash
> Branch_stub_entries
;
3530 Branch_stub_entries long_branch_stubs_
;
3531 // size of input section
3532 section_size_type orig_data_size_
;
3534 section_size_type plt_size_
, last_plt_size_
, branch_size_
, last_branch_size_
;
3535 // Whether .eh_frame info has been created for this stub section.
3536 bool eh_frame_added_
;
3539 // Make a new stub table, and record.
3541 template<int size
, bool big_endian
>
3542 Stub_table
<size
, big_endian
>*
3543 Target_powerpc
<size
, big_endian
>::new_stub_table()
3545 Stub_table
<size
, big_endian
>* stub_table
3546 = new Stub_table
<size
, big_endian
>(this);
3547 this->stub_tables_
.push_back(stub_table
);
3551 // Delayed stub table initialisation, because we create the stub table
3552 // before we know to which section it will be attached.
3554 template<int size
, bool big_endian
>
3556 Stub_table
<size
, big_endian
>::init(
3557 const Output_section::Input_section
* owner
,
3558 Output_section
* output_section
)
3560 this->set_relobj(owner
->relobj());
3561 this->set_shndx(owner
->shndx());
3562 this->set_addralign(this->relobj()->section_addralign(this->shndx()));
3563 this->set_output_section(output_section
);
3564 this->orig_data_size_
= owner
->current_data_size();
3566 std::vector
<Output_relaxed_input_section
*> new_relaxed
;
3567 new_relaxed
.push_back(this);
3568 output_section
->convert_input_sections_to_relaxed_sections(new_relaxed
);
3571 // Add a plt call stub, if we do not already have one for this
3572 // sym/object/addend combo.
3574 template<int size
, bool big_endian
>
3576 Stub_table
<size
, big_endian
>::add_plt_call_entry(
3577 const Sized_relobj_file
<size
, big_endian
>* object
,
3579 unsigned int r_type
,
3582 Plt_stub_ent
ent(object
, gsym
, r_type
, addend
);
3583 Address off
= this->plt_size_
;
3584 std::pair
<typename
Plt_stub_entries::iterator
, bool> p
3585 = this->plt_call_stubs_
.insert(std::make_pair(ent
, off
));
3587 this->plt_size_
= off
+ this->plt_call_size(p
.first
);
3590 template<int size
, bool big_endian
>
3592 Stub_table
<size
, big_endian
>::add_plt_call_entry(
3593 const Sized_relobj_file
<size
, big_endian
>* object
,
3594 unsigned int locsym_index
,
3595 unsigned int r_type
,
3598 Plt_stub_ent
ent(object
, locsym_index
, r_type
, addend
);
3599 Address off
= this->plt_size_
;
3600 std::pair
<typename
Plt_stub_entries::iterator
, bool> p
3601 = this->plt_call_stubs_
.insert(std::make_pair(ent
, off
));
3603 this->plt_size_
= off
+ this->plt_call_size(p
.first
);
3606 // Find a plt call stub.
3608 template<int size
, bool big_endian
>
3609 typename Stub_table
<size
, big_endian
>::Address
3610 Stub_table
<size
, big_endian
>::find_plt_call_entry(
3611 const Sized_relobj_file
<size
, big_endian
>* object
,
3613 unsigned int r_type
,
3614 Address addend
) const
3616 Plt_stub_ent
ent(object
, gsym
, r_type
, addend
);
3617 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
3618 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
3621 template<int size
, bool big_endian
>
3622 typename Stub_table
<size
, big_endian
>::Address
3623 Stub_table
<size
, big_endian
>::find_plt_call_entry(const Symbol
* gsym
) const
3625 Plt_stub_ent
ent(gsym
);
3626 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
3627 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
3630 template<int size
, bool big_endian
>
3631 typename Stub_table
<size
, big_endian
>::Address
3632 Stub_table
<size
, big_endian
>::find_plt_call_entry(
3633 const Sized_relobj_file
<size
, big_endian
>* object
,
3634 unsigned int locsym_index
,
3635 unsigned int r_type
,
3636 Address addend
) const
3638 Plt_stub_ent
ent(object
, locsym_index
, r_type
, addend
);
3639 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
3640 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
3643 template<int size
, bool big_endian
>
3644 typename Stub_table
<size
, big_endian
>::Address
3645 Stub_table
<size
, big_endian
>::find_plt_call_entry(
3646 const Sized_relobj_file
<size
, big_endian
>* object
,
3647 unsigned int locsym_index
) const
3649 Plt_stub_ent
ent(object
, locsym_index
);
3650 typename
Plt_stub_entries::const_iterator p
= this->plt_call_stubs_
.find(ent
);
3651 return p
== this->plt_call_stubs_
.end() ? invalid_address
: p
->second
;
3654 // Add a long branch stub if we don't already have one to given
3657 template<int size
, bool big_endian
>
3659 Stub_table
<size
, big_endian
>::add_long_branch_entry(
3660 const Powerpc_relobj
<size
, big_endian
>* object
,
3663 Branch_stub_ent
ent(object
, to
);
3664 Address off
= this->branch_size_
;
3665 if (this->long_branch_stubs_
.insert(std::make_pair(ent
, off
)).second
)
3667 unsigned int stub_size
= this->branch_stub_size(to
);
3668 this->branch_size_
= off
+ stub_size
;
3669 if (size
== 64 && stub_size
!= 4)
3670 this->targ_
->add_branch_lookup_table(to
);
3674 // Find long branch stub.
3676 template<int size
, bool big_endian
>
3677 typename Stub_table
<size
, big_endian
>::Address
3678 Stub_table
<size
, big_endian
>::find_long_branch_entry(
3679 const Powerpc_relobj
<size
, big_endian
>* object
,
3682 Branch_stub_ent
ent(object
, to
);
3683 typename
Branch_stub_entries::const_iterator p
3684 = this->long_branch_stubs_
.find(ent
);
3685 return p
== this->long_branch_stubs_
.end() ? invalid_address
: p
->second
;
3688 // A class to handle .glink.
3690 template<int size
, bool big_endian
>
3691 class Output_data_glink
: public Output_section_data
3694 static const int pltresolve_size
= 16*4;
3696 Output_data_glink(Target_powerpc
<size
, big_endian
>* targ
)
3697 : Output_section_data(16), targ_(targ
)
3701 add_eh_frame(Layout
* layout
)
3703 if (!parameters
->options().ld_generated_unwind_info())
3707 layout
->add_eh_frame_for_plt(this,
3708 Eh_cie
<64>::eh_frame_cie
,
3709 sizeof (Eh_cie
<64>::eh_frame_cie
),
3710 glink_eh_frame_fde_64
,
3711 sizeof (glink_eh_frame_fde_64
));
3714 // 32-bit .glink can use the default since the CIE return
3715 // address reg, LR, is valid.
3716 layout
->add_eh_frame_for_plt(this,
3717 Eh_cie
<32>::eh_frame_cie
,
3718 sizeof (Eh_cie
<32>::eh_frame_cie
),
3720 sizeof (default_fde
));
3721 // Except where LR is used in a PIC __glink_PLTresolve.
3722 if (parameters
->options().output_is_position_independent())
3723 layout
->add_eh_frame_for_plt(this,
3724 Eh_cie
<32>::eh_frame_cie
,
3725 sizeof (Eh_cie
<32>::eh_frame_cie
),
3726 glink_eh_frame_fde_32
,
3727 sizeof (glink_eh_frame_fde_32
));
3732 // Write to a map file.
3734 do_print_to_mapfile(Mapfile
* mapfile
) const
3735 { mapfile
->print_output_data(this, _("** glink")); }
3739 set_final_data_size();
3743 do_write(Output_file
*);
3745 // Allows access to .got and .plt for do_write.
3746 Target_powerpc
<size
, big_endian
>* targ_
;
3749 template<int size
, bool big_endian
>
3751 Output_data_glink
<size
, big_endian
>::set_final_data_size()
3753 unsigned int count
= this->targ_
->plt_entry_count();
3754 section_size_type total
= 0;
3760 // space for branch table
3761 total
+= 4 * (count
- 1);
3763 total
+= -total
& 15;
3764 total
+= this->pltresolve_size
;
3768 total
+= this->pltresolve_size
;
3770 // space for branch table
3773 total
+= 4 * (count
- 0x8000);
3777 this->set_data_size(total
);
3780 // Write out plt and long branch stub code.
3782 template<int size
, bool big_endian
>
3784 Stub_table
<size
, big_endian
>::do_write(Output_file
* of
)
3786 if (this->plt_call_stubs_
.empty()
3787 && this->long_branch_stubs_
.empty())
3790 const section_size_type start_off
= this->offset();
3791 const section_size_type off
= this->stub_offset();
3792 const section_size_type oview_size
=
3793 convert_to_section_size_type(this->data_size() - (off
- start_off
));
3794 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
3799 const Output_data_got_powerpc
<size
, big_endian
>* got
3800 = this->targ_
->got_section();
3801 Address got_os_addr
= got
->output_section()->address();
3803 if (!this->plt_call_stubs_
.empty())
3805 // The base address of the .plt section.
3806 Address plt_base
= this->targ_
->plt_section()->address();
3807 Address iplt_base
= invalid_address
;
3809 // Write out plt call stubs.
3810 typename
Plt_stub_entries::const_iterator cs
;
3811 for (cs
= this->plt_call_stubs_
.begin();
3812 cs
!= this->plt_call_stubs_
.end();
3816 Address pltoff
= this->plt_off(cs
, &is_iplt
);
3817 Address plt_addr
= pltoff
;
3820 if (iplt_base
== invalid_address
)
3821 iplt_base
= this->targ_
->iplt_section()->address();
3822 plt_addr
+= iplt_base
;
3825 plt_addr
+= plt_base
;
3826 const Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
3827 <const Powerpc_relobj
<size
, big_endian
>*>(cs
->first
.object_
);
3828 Address got_addr
= got_os_addr
+ ppcobj
->toc_base_offset();
3829 Address off
= plt_addr
- got_addr
;
3831 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
3832 gold_error(_("%s: linkage table error against `%s'"),
3833 cs
->first
.object_
->name().c_str(),
3834 cs
->first
.sym_
->demangled_name().c_str());
3836 bool static_chain
= parameters
->options().plt_static_chain();
3837 bool thread_safe
= this->targ_
->plt_thread_safe();
3838 bool use_fake_dep
= false;
3839 Address cmp_branch_off
= 0;
3842 unsigned int pltindex
3843 = ((pltoff
- this->targ_
->first_plt_entry_offset())
3844 / this->targ_
->plt_entry_size());
3846 = (this->targ_
->glink_section()->pltresolve_size
3848 if (pltindex
> 32768)
3849 glinkoff
+= (pltindex
- 32768) * 4;
3851 = this->targ_
->glink_section()->address() + glinkoff
;
3853 = (this->stub_address() + cs
->second
+ 24
3854 + 4 * (ha(off
) != 0)
3855 + 4 * (ha(off
+ 8 + 8 * static_chain
) != ha(off
))
3856 + 4 * static_chain
);
3857 cmp_branch_off
= to
- from
;
3858 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
3861 p
= oview
+ cs
->second
;
3864 write_insn
<big_endian
>(p
, std_2_1
+ 40), p
+= 4;
3865 write_insn
<big_endian
>(p
, addis_12_2
+ ha(off
)), p
+= 4;
3866 write_insn
<big_endian
>(p
, ld_11_12
+ l(off
)), p
+= 4;
3867 if (ha(off
+ 8 + 8 * static_chain
) != ha(off
))
3869 write_insn
<big_endian
>(p
, addi_12_12
+ l(off
)), p
+= 4;
3872 write_insn
<big_endian
>(p
, mtctr_11
), p
+= 4;
3875 write_insn
<big_endian
>(p
, xor_11_11_11
), p
+= 4;
3876 write_insn
<big_endian
>(p
, add_12_12_11
), p
+= 4;
3878 write_insn
<big_endian
>(p
, ld_2_12
+ l(off
+ 8)), p
+= 4;
3880 write_insn
<big_endian
>(p
, ld_11_12
+ l(off
+ 16)), p
+= 4;
3884 write_insn
<big_endian
>(p
, std_2_1
+ 40), p
+= 4;
3885 write_insn
<big_endian
>(p
, ld_11_2
+ l(off
)), p
+= 4;
3886 if (ha(off
+ 8 + 8 * static_chain
) != ha(off
))
3888 write_insn
<big_endian
>(p
, addi_2_2
+ l(off
)), p
+= 4;
3891 write_insn
<big_endian
>(p
, mtctr_11
), p
+= 4;
3894 write_insn
<big_endian
>(p
, xor_11_11_11
), p
+= 4;
3895 write_insn
<big_endian
>(p
, add_2_2_11
), p
+= 4;
3898 write_insn
<big_endian
>(p
, ld_11_2
+ l(off
+ 16)), p
+= 4;
3899 write_insn
<big_endian
>(p
, ld_2_2
+ l(off
+ 8)), p
+= 4;
3901 if (thread_safe
&& !use_fake_dep
)
3903 write_insn
<big_endian
>(p
, cmpldi_2_0
), p
+= 4;
3904 write_insn
<big_endian
>(p
, bnectr_p4
), p
+= 4;
3905 write_insn
<big_endian
>(p
, b
| (cmp_branch_off
& 0x3fffffc));
3908 write_insn
<big_endian
>(p
, bctr
);
3912 // Write out long branch stubs.
3913 typename
Branch_stub_entries::const_iterator bs
;
3914 for (bs
= this->long_branch_stubs_
.begin();
3915 bs
!= this->long_branch_stubs_
.end();
3918 p
= oview
+ this->plt_size_
+ bs
->second
;
3919 Address loc
= this->stub_address() + this->plt_size_
+ bs
->second
;
3920 Address delta
= bs
->first
.dest_
- loc
;
3921 if (delta
+ (1 << 25) < 2 << 25)
3922 write_insn
<big_endian
>(p
, b
| (delta
& 0x3fffffc));
3926 = this->targ_
->find_branch_lookup_table(bs
->first
.dest_
);
3927 gold_assert(brlt_addr
!= invalid_address
);
3928 brlt_addr
+= this->targ_
->brlt_section()->address();
3929 Address got_addr
= got_os_addr
+ bs
->first
.toc_base_off_
;
3930 Address brltoff
= brlt_addr
- got_addr
;
3931 if (ha(brltoff
) == 0)
3933 write_insn
<big_endian
>(p
, ld_11_2
+ l(brltoff
)), p
+= 4;
3937 write_insn
<big_endian
>(p
, addis_12_2
+ ha(brltoff
)), p
+= 4;
3938 write_insn
<big_endian
>(p
, ld_11_12
+ l(brltoff
)), p
+= 4;
3940 write_insn
<big_endian
>(p
, mtctr_11
), p
+= 4;
3941 write_insn
<big_endian
>(p
, bctr
);
3947 if (!this->plt_call_stubs_
.empty())
3949 // The base address of the .plt section.
3950 Address plt_base
= this->targ_
->plt_section()->address();
3951 Address iplt_base
= invalid_address
;
3952 // The address of _GLOBAL_OFFSET_TABLE_.
3953 Address g_o_t
= invalid_address
;
3955 // Write out plt call stubs.
3956 typename
Plt_stub_entries::const_iterator cs
;
3957 for (cs
= this->plt_call_stubs_
.begin();
3958 cs
!= this->plt_call_stubs_
.end();
3962 Address plt_addr
= this->plt_off(cs
, &is_iplt
);
3965 if (iplt_base
== invalid_address
)
3966 iplt_base
= this->targ_
->iplt_section()->address();
3967 plt_addr
+= iplt_base
;
3970 plt_addr
+= plt_base
;
3972 p
= oview
+ cs
->second
;
3973 if (parameters
->options().output_is_position_independent())
3976 const Powerpc_relobj
<size
, big_endian
>* ppcobj
3977 = (static_cast<const Powerpc_relobj
<size
, big_endian
>*>
3978 (cs
->first
.object_
));
3979 if (ppcobj
!= NULL
&& cs
->first
.addend_
>= 32768)
3981 unsigned int got2
= ppcobj
->got2_shndx();
3982 got_addr
= ppcobj
->get_output_section_offset(got2
);
3983 gold_assert(got_addr
!= invalid_address
);
3984 got_addr
+= (ppcobj
->output_section(got2
)->address()
3985 + cs
->first
.addend_
);
3989 if (g_o_t
== invalid_address
)
3991 const Output_data_got_powerpc
<size
, big_endian
>* got
3992 = this->targ_
->got_section();
3993 g_o_t
= got
->address() + got
->g_o_t();
3998 Address off
= plt_addr
- got_addr
;
4001 write_insn
<big_endian
>(p
+ 0, lwz_11_30
+ l(off
));
4002 write_insn
<big_endian
>(p
+ 4, mtctr_11
);
4003 write_insn
<big_endian
>(p
+ 8, bctr
);
4007 write_insn
<big_endian
>(p
+ 0, addis_11_30
+ ha(off
));
4008 write_insn
<big_endian
>(p
+ 4, lwz_11_11
+ l(off
));
4009 write_insn
<big_endian
>(p
+ 8, mtctr_11
);
4010 write_insn
<big_endian
>(p
+ 12, bctr
);
4015 write_insn
<big_endian
>(p
+ 0, lis_11
+ ha(plt_addr
));
4016 write_insn
<big_endian
>(p
+ 4, lwz_11_11
+ l(plt_addr
));
4017 write_insn
<big_endian
>(p
+ 8, mtctr_11
);
4018 write_insn
<big_endian
>(p
+ 12, bctr
);
4023 // Write out long branch stubs.
4024 typename
Branch_stub_entries::const_iterator bs
;
4025 for (bs
= this->long_branch_stubs_
.begin();
4026 bs
!= this->long_branch_stubs_
.end();
4029 p
= oview
+ this->plt_size_
+ bs
->second
;
4030 Address loc
= this->stub_address() + this->plt_size_
+ bs
->second
;
4031 Address delta
= bs
->first
.dest_
- loc
;
4032 if (delta
+ (1 << 25) < 2 << 25)
4033 write_insn
<big_endian
>(p
, b
| (delta
& 0x3fffffc));
4034 else if (!parameters
->options().output_is_position_independent())
4036 write_insn
<big_endian
>(p
+ 0, lis_12
+ ha(bs
->first
.dest_
));
4037 write_insn
<big_endian
>(p
+ 4, addi_12_12
+ l(bs
->first
.dest_
));
4038 write_insn
<big_endian
>(p
+ 8, mtctr_12
);
4039 write_insn
<big_endian
>(p
+ 12, bctr
);
4044 write_insn
<big_endian
>(p
+ 0, mflr_0
);
4045 write_insn
<big_endian
>(p
+ 4, bcl_20_31
);
4046 write_insn
<big_endian
>(p
+ 8, mflr_12
);
4047 write_insn
<big_endian
>(p
+ 12, addis_12_12
+ ha(delta
));
4048 write_insn
<big_endian
>(p
+ 16, addi_12_12
+ l(delta
));
4049 write_insn
<big_endian
>(p
+ 20, mtlr_0
);
4050 write_insn
<big_endian
>(p
+ 24, mtctr_12
);
4051 write_insn
<big_endian
>(p
+ 28, bctr
);
4057 // Write out .glink.
4059 template<int size
, bool big_endian
>
4061 Output_data_glink
<size
, big_endian
>::do_write(Output_file
* of
)
4063 const section_size_type off
= this->offset();
4064 const section_size_type oview_size
=
4065 convert_to_section_size_type(this->data_size());
4066 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
4069 // The base address of the .plt section.
4070 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
4071 Address plt_base
= this->targ_
->plt_section()->address();
4075 // Write pltresolve stub.
4077 Address after_bcl
= this->address() + 16;
4078 Address pltoff
= plt_base
- after_bcl
;
4080 elfcpp::Swap
<64, big_endian
>::writeval(p
, pltoff
), p
+= 8;
4082 write_insn
<big_endian
>(p
, mflr_12
), p
+= 4;
4083 write_insn
<big_endian
>(p
, bcl_20_31
), p
+= 4;
4084 write_insn
<big_endian
>(p
, mflr_11
), p
+= 4;
4085 write_insn
<big_endian
>(p
, ld_2_11
+ l(-16)), p
+= 4;
4086 write_insn
<big_endian
>(p
, mtlr_12
), p
+= 4;
4087 write_insn
<big_endian
>(p
, add_12_2_11
), p
+= 4;
4088 write_insn
<big_endian
>(p
, ld_11_12
+ 0), p
+= 4;
4089 write_insn
<big_endian
>(p
, ld_2_12
+ 8), p
+= 4;
4090 write_insn
<big_endian
>(p
, mtctr_11
), p
+= 4;
4091 write_insn
<big_endian
>(p
, ld_11_12
+ 16), p
+= 4;
4092 write_insn
<big_endian
>(p
, bctr
), p
+= 4;
4093 while (p
< oview
+ this->pltresolve_size
)
4094 write_insn
<big_endian
>(p
, nop
), p
+= 4;
4096 // Write lazy link call stubs.
4098 while (p
< oview
+ oview_size
)
4102 write_insn
<big_endian
>(p
, li_0_0
+ indx
), p
+= 4;
4106 write_insn
<big_endian
>(p
, lis_0_0
+ hi(indx
)), p
+= 4;
4107 write_insn
<big_endian
>(p
, ori_0_0_0
+ l(indx
)), p
+= 4;
4109 uint32_t branch_off
= 8 - (p
- oview
);
4110 write_insn
<big_endian
>(p
, b
+ (branch_off
& 0x3fffffc)), p
+= 4;
4116 const Output_data_got_powerpc
<size
, big_endian
>* got
4117 = this->targ_
->got_section();
4118 // The address of _GLOBAL_OFFSET_TABLE_.
4119 Address g_o_t
= got
->address() + got
->g_o_t();
4121 // Write out pltresolve branch table.
4123 unsigned int the_end
= oview_size
- this->pltresolve_size
;
4124 unsigned char* end_p
= oview
+ the_end
;
4125 while (p
< end_p
- 8 * 4)
4126 write_insn
<big_endian
>(p
, b
+ end_p
- p
), p
+= 4;
4128 write_insn
<big_endian
>(p
, nop
), p
+= 4;
4130 // Write out pltresolve call stub.
4131 if (parameters
->options().output_is_position_independent())
4133 Address res0_off
= 0;
4134 Address after_bcl_off
= the_end
+ 12;
4135 Address bcl_res0
= after_bcl_off
- res0_off
;
4137 write_insn
<big_endian
>(p
+ 0, addis_11_11
+ ha(bcl_res0
));
4138 write_insn
<big_endian
>(p
+ 4, mflr_0
);
4139 write_insn
<big_endian
>(p
+ 8, bcl_20_31
);
4140 write_insn
<big_endian
>(p
+ 12, addi_11_11
+ l(bcl_res0
));
4141 write_insn
<big_endian
>(p
+ 16, mflr_12
);
4142 write_insn
<big_endian
>(p
+ 20, mtlr_0
);
4143 write_insn
<big_endian
>(p
+ 24, sub_11_11_12
);
4145 Address got_bcl
= g_o_t
+ 4 - (after_bcl_off
+ this->address());
4147 write_insn
<big_endian
>(p
+ 28, addis_12_12
+ ha(got_bcl
));
4148 if (ha(got_bcl
) == ha(got_bcl
+ 4))
4150 write_insn
<big_endian
>(p
+ 32, lwz_0_12
+ l(got_bcl
));
4151 write_insn
<big_endian
>(p
+ 36, lwz_12_12
+ l(got_bcl
+ 4));
4155 write_insn
<big_endian
>(p
+ 32, lwzu_0_12
+ l(got_bcl
));
4156 write_insn
<big_endian
>(p
+ 36, lwz_12_12
+ 4);
4158 write_insn
<big_endian
>(p
+ 40, mtctr_0
);
4159 write_insn
<big_endian
>(p
+ 44, add_0_11_11
);
4160 write_insn
<big_endian
>(p
+ 48, add_11_0_11
);
4161 write_insn
<big_endian
>(p
+ 52, bctr
);
4162 write_insn
<big_endian
>(p
+ 56, nop
);
4163 write_insn
<big_endian
>(p
+ 60, nop
);
4167 Address res0
= this->address();
4169 write_insn
<big_endian
>(p
+ 0, lis_12
+ ha(g_o_t
+ 4));
4170 write_insn
<big_endian
>(p
+ 4, addis_11_11
+ ha(-res0
));
4171 if (ha(g_o_t
+ 4) == ha(g_o_t
+ 8))
4172 write_insn
<big_endian
>(p
+ 8, lwz_0_12
+ l(g_o_t
+ 4));
4174 write_insn
<big_endian
>(p
+ 8, lwzu_0_12
+ l(g_o_t
+ 4));
4175 write_insn
<big_endian
>(p
+ 12, addi_11_11
+ l(-res0
));
4176 write_insn
<big_endian
>(p
+ 16, mtctr_0
);
4177 write_insn
<big_endian
>(p
+ 20, add_0_11_11
);
4178 if (ha(g_o_t
+ 4) == ha(g_o_t
+ 8))
4179 write_insn
<big_endian
>(p
+ 24, lwz_12_12
+ l(g_o_t
+ 8));
4181 write_insn
<big_endian
>(p
+ 24, lwz_12_12
+ 4);
4182 write_insn
<big_endian
>(p
+ 28, add_11_0_11
);
4183 write_insn
<big_endian
>(p
+ 32, bctr
);
4184 write_insn
<big_endian
>(p
+ 36, nop
);
4185 write_insn
<big_endian
>(p
+ 40, nop
);
4186 write_insn
<big_endian
>(p
+ 44, nop
);
4187 write_insn
<big_endian
>(p
+ 48, nop
);
4188 write_insn
<big_endian
>(p
+ 52, nop
);
4189 write_insn
<big_endian
>(p
+ 56, nop
);
4190 write_insn
<big_endian
>(p
+ 60, nop
);
4195 of
->write_output_view(off
, oview_size
, oview
);
4199 // A class to handle linker generated save/restore functions.
4201 template<int size
, bool big_endian
>
4202 class Output_data_save_res
: public Output_section_data_build
4205 Output_data_save_res(Symbol_table
* symtab
);
4208 // Write to a map file.
4210 do_print_to_mapfile(Mapfile
* mapfile
) const
4211 { mapfile
->print_output_data(this, _("** save/restore")); }
4214 do_write(Output_file
*);
4217 // The maximum size of save/restore contents.
4218 static const unsigned int savres_max
= 218*4;
4221 savres_define(Symbol_table
* symtab
,
4223 unsigned int lo
, unsigned int hi
,
4224 unsigned char* write_ent(unsigned char*, int),
4225 unsigned char* write_tail(unsigned char*, int));
4227 unsigned char *contents_
;
4230 template<bool big_endian
>
4231 static unsigned char*
4232 savegpr0(unsigned char* p
, int r
)
4234 uint32_t insn
= std_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4235 write_insn
<big_endian
>(p
, insn
);
4239 template<bool big_endian
>
4240 static unsigned char*
4241 savegpr0_tail(unsigned char* p
, int r
)
4243 p
= savegpr0
<big_endian
>(p
, r
);
4244 uint32_t insn
= std_0_1
+ 16;
4245 write_insn
<big_endian
>(p
, insn
);
4247 write_insn
<big_endian
>(p
, blr
);
4251 template<bool big_endian
>
4252 static unsigned char*
4253 restgpr0(unsigned char* p
, int r
)
4255 uint32_t insn
= ld_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 restgpr0_tail(unsigned char* p
, int r
)
4264 uint32_t insn
= ld_0_1
+ 16;
4265 write_insn
<big_endian
>(p
, insn
);
4267 p
= restgpr0
<big_endian
>(p
, r
);
4268 write_insn
<big_endian
>(p
, mtlr_0
);
4272 p
= restgpr0
<big_endian
>(p
, 30);
4273 p
= restgpr0
<big_endian
>(p
, 31);
4275 write_insn
<big_endian
>(p
, blr
);
4279 template<bool big_endian
>
4280 static unsigned char*
4281 savegpr1(unsigned char* p
, int r
)
4283 uint32_t insn
= std_0_12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4284 write_insn
<big_endian
>(p
, insn
);
4288 template<bool big_endian
>
4289 static unsigned char*
4290 savegpr1_tail(unsigned char* p
, int r
)
4292 p
= savegpr1
<big_endian
>(p
, r
);
4293 write_insn
<big_endian
>(p
, blr
);
4297 template<bool big_endian
>
4298 static unsigned char*
4299 restgpr1(unsigned char* p
, int r
)
4301 uint32_t insn
= ld_0_12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4302 write_insn
<big_endian
>(p
, insn
);
4306 template<bool big_endian
>
4307 static unsigned char*
4308 restgpr1_tail(unsigned char* p
, int r
)
4310 p
= restgpr1
<big_endian
>(p
, r
);
4311 write_insn
<big_endian
>(p
, blr
);
4315 template<bool big_endian
>
4316 static unsigned char*
4317 savefpr(unsigned char* p
, int r
)
4319 uint32_t insn
= stfd_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4320 write_insn
<big_endian
>(p
, insn
);
4324 template<bool big_endian
>
4325 static unsigned char*
4326 savefpr0_tail(unsigned char* p
, int r
)
4328 p
= savefpr
<big_endian
>(p
, r
);
4329 write_insn
<big_endian
>(p
, std_0_1
+ 16);
4331 write_insn
<big_endian
>(p
, blr
);
4335 template<bool big_endian
>
4336 static unsigned char*
4337 restfpr(unsigned char* p
, int r
)
4339 uint32_t insn
= lfd_0_1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8;
4340 write_insn
<big_endian
>(p
, insn
);
4344 template<bool big_endian
>
4345 static unsigned char*
4346 restfpr0_tail(unsigned char* p
, int r
)
4348 write_insn
<big_endian
>(p
, ld_0_1
+ 16);
4350 p
= restfpr
<big_endian
>(p
, r
);
4351 write_insn
<big_endian
>(p
, mtlr_0
);
4355 p
= restfpr
<big_endian
>(p
, 30);
4356 p
= restfpr
<big_endian
>(p
, 31);
4358 write_insn
<big_endian
>(p
, blr
);
4362 template<bool big_endian
>
4363 static unsigned char*
4364 savefpr1_tail(unsigned char* p
, int r
)
4366 p
= savefpr
<big_endian
>(p
, r
);
4367 write_insn
<big_endian
>(p
, blr
);
4371 template<bool big_endian
>
4372 static unsigned char*
4373 restfpr1_tail(unsigned char* p
, int r
)
4375 p
= restfpr
<big_endian
>(p
, r
);
4376 write_insn
<big_endian
>(p
, blr
);
4380 template<bool big_endian
>
4381 static unsigned char*
4382 savevr(unsigned char* p
, int r
)
4384 uint32_t insn
= li_12_0
+ (1 << 16) - (32 - r
) * 16;
4385 write_insn
<big_endian
>(p
, insn
);
4387 insn
= stvx_0_12_0
+ (r
<< 21);
4388 write_insn
<big_endian
>(p
, insn
);
4392 template<bool big_endian
>
4393 static unsigned char*
4394 savevr_tail(unsigned char* p
, int r
)
4396 p
= savevr
<big_endian
>(p
, r
);
4397 write_insn
<big_endian
>(p
, blr
);
4401 template<bool big_endian
>
4402 static unsigned char*
4403 restvr(unsigned char* p
, int r
)
4405 uint32_t insn
= li_12_0
+ (1 << 16) - (32 - r
) * 16;
4406 write_insn
<big_endian
>(p
, insn
);
4408 insn
= lvx_0_12_0
+ (r
<< 21);
4409 write_insn
<big_endian
>(p
, insn
);
4413 template<bool big_endian
>
4414 static unsigned char*
4415 restvr_tail(unsigned char* p
, int r
)
4417 p
= restvr
<big_endian
>(p
, r
);
4418 write_insn
<big_endian
>(p
, blr
);
4423 template<int size
, bool big_endian
>
4424 Output_data_save_res
<size
, big_endian
>::Output_data_save_res(
4425 Symbol_table
* symtab
)
4426 : Output_section_data_build(4),
4429 this->savres_define(symtab
,
4430 "_savegpr0_", 14, 31,
4431 savegpr0
<big_endian
>, savegpr0_tail
<big_endian
>);
4432 this->savres_define(symtab
,
4433 "_restgpr0_", 14, 29,
4434 restgpr0
<big_endian
>, restgpr0_tail
<big_endian
>);
4435 this->savres_define(symtab
,
4436 "_restgpr0_", 30, 31,
4437 restgpr0
<big_endian
>, restgpr0_tail
<big_endian
>);
4438 this->savres_define(symtab
,
4439 "_savegpr1_", 14, 31,
4440 savegpr1
<big_endian
>, savegpr1_tail
<big_endian
>);
4441 this->savres_define(symtab
,
4442 "_restgpr1_", 14, 31,
4443 restgpr1
<big_endian
>, restgpr1_tail
<big_endian
>);
4444 this->savres_define(symtab
,
4445 "_savefpr_", 14, 31,
4446 savefpr
<big_endian
>, savefpr0_tail
<big_endian
>);
4447 this->savres_define(symtab
,
4448 "_restfpr_", 14, 29,
4449 restfpr
<big_endian
>, restfpr0_tail
<big_endian
>);
4450 this->savres_define(symtab
,
4451 "_restfpr_", 30, 31,
4452 restfpr
<big_endian
>, restfpr0_tail
<big_endian
>);
4453 this->savres_define(symtab
,
4455 savefpr
<big_endian
>, savefpr1_tail
<big_endian
>);
4456 this->savres_define(symtab
,
4458 restfpr
<big_endian
>, restfpr1_tail
<big_endian
>);
4459 this->savres_define(symtab
,
4461 savevr
<big_endian
>, savevr_tail
<big_endian
>);
4462 this->savres_define(symtab
,
4464 restvr
<big_endian
>, restvr_tail
<big_endian
>);
4467 template<int size
, bool big_endian
>
4469 Output_data_save_res
<size
, big_endian
>::savres_define(
4470 Symbol_table
* symtab
,
4472 unsigned int lo
, unsigned int hi
,
4473 unsigned char* write_ent(unsigned char*, int),
4474 unsigned char* write_tail(unsigned char*, int))
4476 size_t len
= strlen(name
);
4477 bool writing
= false;
4480 memcpy(sym
, name
, len
);
4483 for (unsigned int i
= lo
; i
<= hi
; i
++)
4485 sym
[len
+ 0] = i
/ 10 + '0';
4486 sym
[len
+ 1] = i
% 10 + '0';
4487 Symbol
* gsym
= symtab
->lookup(sym
);
4488 bool refd
= gsym
!= NULL
&& gsym
->is_undefined();
4489 writing
= writing
|| refd
;
4492 if (this->contents_
== NULL
)
4493 this->contents_
= new unsigned char[this->savres_max
];
4495 section_size_type value
= this->current_data_size();
4496 unsigned char* p
= this->contents_
+ value
;
4498 p
= write_ent(p
, i
);
4500 p
= write_tail(p
, i
);
4501 section_size_type cur_size
= p
- this->contents_
;
4502 this->set_current_data_size(cur_size
);
4504 symtab
->define_in_output_data(sym
, NULL
, Symbol_table::PREDEFINED
,
4505 this, value
, cur_size
- value
,
4506 elfcpp::STT_FUNC
, elfcpp::STB_GLOBAL
,
4507 elfcpp::STV_HIDDEN
, 0, false, false);
4512 // Write out save/restore.
4514 template<int size
, bool big_endian
>
4516 Output_data_save_res
<size
, big_endian
>::do_write(Output_file
* of
)
4518 const section_size_type off
= this->offset();
4519 const section_size_type oview_size
=
4520 convert_to_section_size_type(this->data_size());
4521 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
4522 memcpy(oview
, this->contents_
, oview_size
);
4523 of
->write_output_view(off
, oview_size
, oview
);
4527 // Create the glink section.
4529 template<int size
, bool big_endian
>
4531 Target_powerpc
<size
, big_endian
>::make_glink_section(Layout
* layout
)
4533 if (this->glink_
== NULL
)
4535 this->glink_
= new Output_data_glink
<size
, big_endian
>(this);
4536 this->glink_
->add_eh_frame(layout
);
4537 layout
->add_output_section_data(".text", elfcpp::SHT_PROGBITS
,
4538 elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
,
4539 this->glink_
, ORDER_TEXT
, false);
4543 // Create a PLT entry for a global symbol.
4545 template<int size
, bool big_endian
>
4547 Target_powerpc
<size
, big_endian
>::make_plt_entry(Symbol_table
* symtab
,
4551 if (gsym
->type() == elfcpp::STT_GNU_IFUNC
4552 && gsym
->can_use_relative_reloc(false))
4554 if (this->iplt_
== NULL
)
4555 this->make_iplt_section(symtab
, layout
);
4556 this->iplt_
->add_ifunc_entry(gsym
);
4560 if (this->plt_
== NULL
)
4561 this->make_plt_section(symtab
, layout
);
4562 this->plt_
->add_entry(gsym
);
4566 // Make a PLT entry for a local STT_GNU_IFUNC symbol.
4568 template<int size
, bool big_endian
>
4570 Target_powerpc
<size
, big_endian
>::make_local_ifunc_plt_entry(
4571 Symbol_table
* symtab
,
4573 Sized_relobj_file
<size
, big_endian
>* relobj
,
4576 if (this->iplt_
== NULL
)
4577 this->make_iplt_section(symtab
, layout
);
4578 this->iplt_
->add_local_ifunc_entry(relobj
, r_sym
);
4581 // Return the number of entries in the PLT.
4583 template<int size
, bool big_endian
>
4585 Target_powerpc
<size
, big_endian
>::plt_entry_count() const
4587 if (this->plt_
== NULL
)
4589 return this->plt_
->entry_count();
4592 // Return the offset of the first non-reserved PLT entry.
4594 template<int size
, bool big_endian
>
4596 Target_powerpc
<size
, big_endian
>::first_plt_entry_offset() const
4598 return this->plt_
->first_plt_entry_offset();
4601 // Return the size of each PLT entry.
4603 template<int size
, bool big_endian
>
4605 Target_powerpc
<size
, big_endian
>::plt_entry_size() const
4607 return Output_data_plt_powerpc
<size
, big_endian
>::get_plt_entry_size();
4610 // Create a GOT entry for local dynamic __tls_get_addr calls.
4612 template<int size
, bool big_endian
>
4614 Target_powerpc
<size
, big_endian
>::tlsld_got_offset(
4615 Symbol_table
* symtab
,
4617 Sized_relobj_file
<size
, big_endian
>* object
)
4619 if (this->tlsld_got_offset_
== -1U)
4621 gold_assert(symtab
!= NULL
&& layout
!= NULL
&& object
!= NULL
);
4622 Reloc_section
* rela_dyn
= this->rela_dyn_section(layout
);
4623 Output_data_got_powerpc
<size
, big_endian
>* got
4624 = this->got_section(symtab
, layout
);
4625 unsigned int got_offset
= got
->add_constant_pair(0, 0);
4626 rela_dyn
->add_local(object
, 0, elfcpp::R_POWERPC_DTPMOD
, got
,
4628 this->tlsld_got_offset_
= got_offset
;
4630 return this->tlsld_got_offset_
;
4633 // Get the Reference_flags for a particular relocation.
4635 template<int size
, bool big_endian
>
4637 Target_powerpc
<size
, big_endian
>::Scan::get_reference_flags(unsigned int r_type
)
4641 case elfcpp::R_POWERPC_NONE
:
4642 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
4643 case elfcpp::R_POWERPC_GNU_VTENTRY
:
4644 case elfcpp::R_PPC64_TOC
:
4645 // No symbol reference.
4648 case elfcpp::R_PPC64_ADDR64
:
4649 case elfcpp::R_PPC64_UADDR64
:
4650 case elfcpp::R_POWERPC_ADDR32
:
4651 case elfcpp::R_POWERPC_UADDR32
:
4652 case elfcpp::R_POWERPC_ADDR16
:
4653 case elfcpp::R_POWERPC_UADDR16
:
4654 case elfcpp::R_POWERPC_ADDR16_LO
:
4655 case elfcpp::R_POWERPC_ADDR16_HI
:
4656 case elfcpp::R_POWERPC_ADDR16_HA
:
4657 return Symbol::ABSOLUTE_REF
;
4659 case elfcpp::R_POWERPC_ADDR24
:
4660 case elfcpp::R_POWERPC_ADDR14
:
4661 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
4662 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
4663 return Symbol::FUNCTION_CALL
| Symbol::ABSOLUTE_REF
;
4665 case elfcpp::R_PPC64_REL64
:
4666 case elfcpp::R_POWERPC_REL32
:
4667 case elfcpp::R_PPC_LOCAL24PC
:
4668 case elfcpp::R_POWERPC_REL16
:
4669 case elfcpp::R_POWERPC_REL16_LO
:
4670 case elfcpp::R_POWERPC_REL16_HI
:
4671 case elfcpp::R_POWERPC_REL16_HA
:
4672 return Symbol::RELATIVE_REF
;
4674 case elfcpp::R_POWERPC_REL24
:
4675 case elfcpp::R_PPC_PLTREL24
:
4676 case elfcpp::R_POWERPC_REL14
:
4677 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
4678 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
4679 return Symbol::FUNCTION_CALL
| Symbol::RELATIVE_REF
;
4681 case elfcpp::R_POWERPC_GOT16
:
4682 case elfcpp::R_POWERPC_GOT16_LO
:
4683 case elfcpp::R_POWERPC_GOT16_HI
:
4684 case elfcpp::R_POWERPC_GOT16_HA
:
4685 case elfcpp::R_PPC64_GOT16_DS
:
4686 case elfcpp::R_PPC64_GOT16_LO_DS
:
4687 case elfcpp::R_PPC64_TOC16
:
4688 case elfcpp::R_PPC64_TOC16_LO
:
4689 case elfcpp::R_PPC64_TOC16_HI
:
4690 case elfcpp::R_PPC64_TOC16_HA
:
4691 case elfcpp::R_PPC64_TOC16_DS
:
4692 case elfcpp::R_PPC64_TOC16_LO_DS
:
4694 return Symbol::ABSOLUTE_REF
;
4696 case elfcpp::R_POWERPC_GOT_TPREL16
:
4697 case elfcpp::R_POWERPC_TLS
:
4698 return Symbol::TLS_REF
;
4700 case elfcpp::R_POWERPC_COPY
:
4701 case elfcpp::R_POWERPC_GLOB_DAT
:
4702 case elfcpp::R_POWERPC_JMP_SLOT
:
4703 case elfcpp::R_POWERPC_RELATIVE
:
4704 case elfcpp::R_POWERPC_DTPMOD
:
4706 // Not expected. We will give an error later.
4711 // Report an unsupported relocation against a local symbol.
4713 template<int size
, bool big_endian
>
4715 Target_powerpc
<size
, big_endian
>::Scan::unsupported_reloc_local(
4716 Sized_relobj_file
<size
, big_endian
>* object
,
4717 unsigned int r_type
)
4719 gold_error(_("%s: unsupported reloc %u against local symbol"),
4720 object
->name().c_str(), r_type
);
4723 // We are about to emit a dynamic relocation of type R_TYPE. If the
4724 // dynamic linker does not support it, issue an error.
4726 template<int size
, bool big_endian
>
4728 Target_powerpc
<size
, big_endian
>::Scan::check_non_pic(Relobj
* object
,
4729 unsigned int r_type
)
4731 gold_assert(r_type
!= elfcpp::R_POWERPC_NONE
);
4733 // These are the relocation types supported by glibc for both 32-bit
4734 // and 64-bit powerpc.
4737 case elfcpp::R_POWERPC_NONE
:
4738 case elfcpp::R_POWERPC_RELATIVE
:
4739 case elfcpp::R_POWERPC_GLOB_DAT
:
4740 case elfcpp::R_POWERPC_DTPMOD
:
4741 case elfcpp::R_POWERPC_DTPREL
:
4742 case elfcpp::R_POWERPC_TPREL
:
4743 case elfcpp::R_POWERPC_JMP_SLOT
:
4744 case elfcpp::R_POWERPC_COPY
:
4745 case elfcpp::R_POWERPC_IRELATIVE
:
4746 case elfcpp::R_POWERPC_ADDR32
:
4747 case elfcpp::R_POWERPC_UADDR32
:
4748 case elfcpp::R_POWERPC_ADDR24
:
4749 case elfcpp::R_POWERPC_ADDR16
:
4750 case elfcpp::R_POWERPC_UADDR16
:
4751 case elfcpp::R_POWERPC_ADDR16_LO
:
4752 case elfcpp::R_POWERPC_ADDR16_HI
:
4753 case elfcpp::R_POWERPC_ADDR16_HA
:
4754 case elfcpp::R_POWERPC_ADDR14
:
4755 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
4756 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
4757 case elfcpp::R_POWERPC_REL32
:
4758 case elfcpp::R_POWERPC_REL24
:
4759 case elfcpp::R_POWERPC_TPREL16
:
4760 case elfcpp::R_POWERPC_TPREL16_LO
:
4761 case elfcpp::R_POWERPC_TPREL16_HI
:
4762 case elfcpp::R_POWERPC_TPREL16_HA
:
4773 // These are the relocation types supported only on 64-bit.
4774 case elfcpp::R_PPC64_ADDR64
:
4775 case elfcpp::R_PPC64_UADDR64
:
4776 case elfcpp::R_PPC64_JMP_IREL
:
4777 case elfcpp::R_PPC64_ADDR16_DS
:
4778 case elfcpp::R_PPC64_ADDR16_LO_DS
:
4779 case elfcpp::R_PPC64_ADDR16_HIGHER
:
4780 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
4781 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
4782 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
4783 case elfcpp::R_PPC64_REL64
:
4784 case elfcpp::R_POWERPC_ADDR30
:
4785 case elfcpp::R_PPC64_TPREL16_DS
:
4786 case elfcpp::R_PPC64_TPREL16_LO_DS
:
4787 case elfcpp::R_PPC64_TPREL16_HIGHER
:
4788 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
4789 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
4790 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
4801 // These are the relocation types supported only on 32-bit.
4802 // ??? glibc ld.so doesn't need to support these.
4803 case elfcpp::R_POWERPC_DTPREL16
:
4804 case elfcpp::R_POWERPC_DTPREL16_LO
:
4805 case elfcpp::R_POWERPC_DTPREL16_HI
:
4806 case elfcpp::R_POWERPC_DTPREL16_HA
:
4814 // This prevents us from issuing more than one error per reloc
4815 // section. But we can still wind up issuing more than one
4816 // error per object file.
4817 if (this->issued_non_pic_error_
)
4819 gold_assert(parameters
->options().output_is_position_independent());
4820 object
->error(_("requires unsupported dynamic reloc; "
4821 "recompile with -fPIC"));
4822 this->issued_non_pic_error_
= true;
4826 // Return whether we need to make a PLT entry for a relocation of the
4827 // given type against a STT_GNU_IFUNC symbol.
4829 template<int size
, bool big_endian
>
4831 Target_powerpc
<size
, big_endian
>::Scan::reloc_needs_plt_for_ifunc(
4832 Sized_relobj_file
<size
, big_endian
>* object
,
4833 unsigned int r_type
,
4836 // In non-pic code any reference will resolve to the plt call stub
4837 // for the ifunc symbol.
4838 if (size
== 32 && !parameters
->options().output_is_position_independent())
4843 // Word size refs from data sections are OK, but don't need a PLT entry.
4844 case elfcpp::R_POWERPC_ADDR32
:
4845 case elfcpp::R_POWERPC_UADDR32
:
4850 case elfcpp::R_PPC64_ADDR64
:
4851 case elfcpp::R_PPC64_UADDR64
:
4856 // GOT refs are good, but also don't need a PLT entry.
4857 case elfcpp::R_POWERPC_GOT16
:
4858 case elfcpp::R_POWERPC_GOT16_LO
:
4859 case elfcpp::R_POWERPC_GOT16_HI
:
4860 case elfcpp::R_POWERPC_GOT16_HA
:
4861 case elfcpp::R_PPC64_GOT16_DS
:
4862 case elfcpp::R_PPC64_GOT16_LO_DS
:
4865 // Function calls are good, and these do need a PLT entry.
4866 case elfcpp::R_POWERPC_ADDR24
:
4867 case elfcpp::R_POWERPC_ADDR14
:
4868 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
4869 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
4870 case elfcpp::R_POWERPC_REL24
:
4871 case elfcpp::R_PPC_PLTREL24
:
4872 case elfcpp::R_POWERPC_REL14
:
4873 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
4874 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
4881 // Anything else is a problem.
4882 // If we are building a static executable, the libc startup function
4883 // responsible for applying indirect function relocations is going
4884 // to complain about the reloc type.
4885 // If we are building a dynamic executable, we will have a text
4886 // relocation. The dynamic loader will set the text segment
4887 // writable and non-executable to apply text relocations. So we'll
4888 // segfault when trying to run the indirection function to resolve
4891 gold_error(_("%s: unsupported reloc %u for IFUNC symbol"),
4892 object
->name().c_str(), r_type
);
4896 // Scan a relocation for a local symbol.
4898 template<int size
, bool big_endian
>
4900 Target_powerpc
<size
, big_endian
>::Scan::local(
4901 Symbol_table
* symtab
,
4903 Target_powerpc
<size
, big_endian
>* target
,
4904 Sized_relobj_file
<size
, big_endian
>* object
,
4905 unsigned int data_shndx
,
4906 Output_section
* output_section
,
4907 const elfcpp::Rela
<size
, big_endian
>& reloc
,
4908 unsigned int r_type
,
4909 const elfcpp::Sym
<size
, big_endian
>& lsym
,
4912 this->maybe_skip_tls_get_addr_call(r_type
, NULL
);
4914 if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
4915 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
4917 this->expect_tls_get_addr_call();
4918 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(true);
4919 if (tls_type
!= tls::TLSOPT_NONE
)
4920 this->skip_next_tls_get_addr_call();
4922 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
4923 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
4925 this->expect_tls_get_addr_call();
4926 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
4927 if (tls_type
!= tls::TLSOPT_NONE
)
4928 this->skip_next_tls_get_addr_call();
4931 Powerpc_relobj
<size
, big_endian
>* ppc_object
4932 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
4937 && data_shndx
== ppc_object
->opd_shndx()
4938 && r_type
== elfcpp::R_PPC64_ADDR64
)
4939 ppc_object
->set_opd_discard(reloc
.get_r_offset());
4943 // A local STT_GNU_IFUNC symbol may require a PLT entry.
4944 bool is_ifunc
= lsym
.get_st_type() == elfcpp::STT_GNU_IFUNC
;
4945 if (is_ifunc
&& this->reloc_needs_plt_for_ifunc(object
, r_type
, true))
4947 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
4948 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
4949 r_type
, r_sym
, reloc
.get_r_addend());
4950 target
->make_local_ifunc_plt_entry(symtab
, layout
, object
, r_sym
);
4955 case elfcpp::R_POWERPC_NONE
:
4956 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
4957 case elfcpp::R_POWERPC_GNU_VTENTRY
:
4958 case elfcpp::R_PPC64_TOCSAVE
:
4959 case elfcpp::R_PPC_EMB_MRKREF
:
4960 case elfcpp::R_POWERPC_TLS
:
4963 case elfcpp::R_PPC64_TOC
:
4965 Output_data_got_powerpc
<size
, big_endian
>* got
4966 = target
->got_section(symtab
, layout
);
4967 if (parameters
->options().output_is_position_independent())
4969 Address off
= reloc
.get_r_offset();
4971 && data_shndx
== ppc_object
->opd_shndx()
4972 && ppc_object
->get_opd_discard(off
- 8))
4975 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
4976 Powerpc_relobj
<size
, big_endian
>* symobj
= ppc_object
;
4977 rela_dyn
->add_output_section_relative(got
->output_section(),
4978 elfcpp::R_POWERPC_RELATIVE
,
4980 object
, data_shndx
, off
,
4981 symobj
->toc_base_offset());
4986 case elfcpp::R_PPC64_ADDR64
:
4987 case elfcpp::R_PPC64_UADDR64
:
4988 case elfcpp::R_POWERPC_ADDR32
:
4989 case elfcpp::R_POWERPC_UADDR32
:
4990 case elfcpp::R_POWERPC_ADDR24
:
4991 case elfcpp::R_POWERPC_ADDR16
:
4992 case elfcpp::R_POWERPC_ADDR16_LO
:
4993 case elfcpp::R_POWERPC_ADDR16_HI
:
4994 case elfcpp::R_POWERPC_ADDR16_HA
:
4995 case elfcpp::R_POWERPC_UADDR16
:
4996 case elfcpp::R_PPC64_ADDR16_HIGHER
:
4997 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
4998 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
4999 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
5000 case elfcpp::R_PPC64_ADDR16_DS
:
5001 case elfcpp::R_PPC64_ADDR16_LO_DS
:
5002 case elfcpp::R_POWERPC_ADDR14
:
5003 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
5004 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
5005 // If building a shared library (or a position-independent
5006 // executable), we need to create a dynamic relocation for
5008 if (parameters
->options().output_is_position_independent()
5009 || (size
== 64 && is_ifunc
))
5011 Reloc_section
* rela_dyn
= target
->rela_dyn_section(symtab
, layout
,
5013 if ((size
== 32 && r_type
== elfcpp::R_POWERPC_ADDR32
)
5014 || (size
== 64 && r_type
== elfcpp::R_PPC64_ADDR64
))
5016 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5017 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
5018 : elfcpp::R_POWERPC_RELATIVE
);
5019 rela_dyn
->add_local_relative(object
, r_sym
, dynrel
,
5020 output_section
, data_shndx
,
5021 reloc
.get_r_offset(),
5022 reloc
.get_r_addend(), false);
5026 check_non_pic(object
, r_type
);
5027 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5028 rela_dyn
->add_local(object
, r_sym
, r_type
, output_section
,
5029 data_shndx
, reloc
.get_r_offset(),
5030 reloc
.get_r_addend());
5035 case elfcpp::R_POWERPC_REL24
:
5036 case elfcpp::R_PPC_PLTREL24
:
5037 case elfcpp::R_PPC_LOCAL24PC
:
5038 case elfcpp::R_POWERPC_REL14
:
5039 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
5040 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
5042 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
5043 r_type
, elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
5044 reloc
.get_r_addend());
5047 case elfcpp::R_PPC64_REL64
:
5048 case elfcpp::R_POWERPC_REL32
:
5049 case elfcpp::R_POWERPC_REL16
:
5050 case elfcpp::R_POWERPC_REL16_LO
:
5051 case elfcpp::R_POWERPC_REL16_HI
:
5052 case elfcpp::R_POWERPC_REL16_HA
:
5053 case elfcpp::R_POWERPC_SECTOFF
:
5054 case elfcpp::R_POWERPC_TPREL16
:
5055 case elfcpp::R_POWERPC_DTPREL16
:
5056 case elfcpp::R_POWERPC_SECTOFF_LO
:
5057 case elfcpp::R_POWERPC_TPREL16_LO
:
5058 case elfcpp::R_POWERPC_DTPREL16_LO
:
5059 case elfcpp::R_POWERPC_SECTOFF_HI
:
5060 case elfcpp::R_POWERPC_TPREL16_HI
:
5061 case elfcpp::R_POWERPC_DTPREL16_HI
:
5062 case elfcpp::R_POWERPC_SECTOFF_HA
:
5063 case elfcpp::R_POWERPC_TPREL16_HA
:
5064 case elfcpp::R_POWERPC_DTPREL16_HA
:
5065 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
5066 case elfcpp::R_PPC64_TPREL16_HIGHER
:
5067 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
5068 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
5069 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
5070 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
5071 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
5072 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
5073 case elfcpp::R_PPC64_TPREL16_DS
:
5074 case elfcpp::R_PPC64_TPREL16_LO_DS
:
5075 case elfcpp::R_PPC64_DTPREL16_DS
:
5076 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
5077 case elfcpp::R_PPC64_SECTOFF_DS
:
5078 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
5079 case elfcpp::R_PPC64_TLSGD
:
5080 case elfcpp::R_PPC64_TLSLD
:
5083 case elfcpp::R_POWERPC_GOT16
:
5084 case elfcpp::R_POWERPC_GOT16_LO
:
5085 case elfcpp::R_POWERPC_GOT16_HI
:
5086 case elfcpp::R_POWERPC_GOT16_HA
:
5087 case elfcpp::R_PPC64_GOT16_DS
:
5088 case elfcpp::R_PPC64_GOT16_LO_DS
:
5090 // The symbol requires a GOT entry.
5091 Output_data_got_powerpc
<size
, big_endian
>* got
5092 = target
->got_section(symtab
, layout
);
5093 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5095 if (!parameters
->options().output_is_position_independent())
5097 if (size
== 32 && is_ifunc
)
5098 got
->add_local_plt(object
, r_sym
, GOT_TYPE_STANDARD
);
5100 got
->add_local(object
, r_sym
, GOT_TYPE_STANDARD
);
5102 else if (!object
->local_has_got_offset(r_sym
, GOT_TYPE_STANDARD
))
5104 // If we are generating a shared object or a pie, this
5105 // symbol's GOT entry will be set by a dynamic relocation.
5107 off
= got
->add_constant(0);
5108 object
->set_local_got_offset(r_sym
, GOT_TYPE_STANDARD
, off
);
5110 Reloc_section
* rela_dyn
= target
->rela_dyn_section(symtab
, layout
,
5112 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
5113 : elfcpp::R_POWERPC_RELATIVE
);
5114 rela_dyn
->add_local_relative(object
, r_sym
, dynrel
,
5115 got
, off
, 0, false);
5120 case elfcpp::R_PPC64_TOC16
:
5121 case elfcpp::R_PPC64_TOC16_LO
:
5122 case elfcpp::R_PPC64_TOC16_HI
:
5123 case elfcpp::R_PPC64_TOC16_HA
:
5124 case elfcpp::R_PPC64_TOC16_DS
:
5125 case elfcpp::R_PPC64_TOC16_LO_DS
:
5126 // We need a GOT section.
5127 target
->got_section(symtab
, layout
);
5130 case elfcpp::R_POWERPC_GOT_TLSGD16
:
5131 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
5132 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
5133 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
5135 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(true);
5136 if (tls_type
== tls::TLSOPT_NONE
)
5138 Output_data_got_powerpc
<size
, big_endian
>* got
5139 = target
->got_section(symtab
, layout
);
5140 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5141 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5142 got
->add_local_tls_pair(object
, r_sym
, GOT_TYPE_TLSGD
,
5143 rela_dyn
, elfcpp::R_POWERPC_DTPMOD
);
5145 else if (tls_type
== tls::TLSOPT_TO_LE
)
5147 // no GOT relocs needed for Local Exec.
5154 case elfcpp::R_POWERPC_GOT_TLSLD16
:
5155 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
5156 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
5157 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
5159 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
5160 if (tls_type
== tls::TLSOPT_NONE
)
5161 target
->tlsld_got_offset(symtab
, layout
, object
);
5162 else if (tls_type
== tls::TLSOPT_TO_LE
)
5164 // no GOT relocs needed for Local Exec.
5165 if (parameters
->options().emit_relocs())
5167 Output_section
* os
= layout
->tls_segment()->first_section();
5168 gold_assert(os
!= NULL
);
5169 os
->set_needs_symtab_index();
5177 case elfcpp::R_POWERPC_GOT_DTPREL16
:
5178 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
5179 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
5180 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
5182 Output_data_got_powerpc
<size
, big_endian
>* got
5183 = target
->got_section(symtab
, layout
);
5184 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5185 got
->add_local_tls(object
, r_sym
, GOT_TYPE_DTPREL
);
5189 case elfcpp::R_POWERPC_GOT_TPREL16
:
5190 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
5191 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
5192 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
5194 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(true);
5195 if (tls_type
== tls::TLSOPT_NONE
)
5197 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
5198 if (!object
->local_has_got_offset(r_sym
, GOT_TYPE_TPREL
))
5200 Output_data_got_powerpc
<size
, big_endian
>* got
5201 = target
->got_section(symtab
, layout
);
5202 unsigned int off
= got
->add_constant(0);
5203 object
->set_local_got_offset(r_sym
, GOT_TYPE_TPREL
, off
);
5205 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5206 rela_dyn
->add_symbolless_local_addend(object
, r_sym
,
5207 elfcpp::R_POWERPC_TPREL
,
5211 else if (tls_type
== tls::TLSOPT_TO_LE
)
5213 // no GOT relocs needed for Local Exec.
5221 unsupported_reloc_local(object
, r_type
);
5227 case elfcpp::R_POWERPC_GOT_TLSLD16
:
5228 case elfcpp::R_POWERPC_GOT_TLSGD16
:
5229 case elfcpp::R_POWERPC_GOT_TPREL16
:
5230 case elfcpp::R_POWERPC_GOT_DTPREL16
:
5231 case elfcpp::R_POWERPC_GOT16
:
5232 case elfcpp::R_PPC64_GOT16_DS
:
5233 case elfcpp::R_PPC64_TOC16
:
5234 case elfcpp::R_PPC64_TOC16_DS
:
5235 ppc_object
->set_has_small_toc_reloc();
5241 // Report an unsupported relocation against a global symbol.
5243 template<int size
, bool big_endian
>
5245 Target_powerpc
<size
, big_endian
>::Scan::unsupported_reloc_global(
5246 Sized_relobj_file
<size
, big_endian
>* object
,
5247 unsigned int r_type
,
5250 gold_error(_("%s: unsupported reloc %u against global symbol %s"),
5251 object
->name().c_str(), r_type
, gsym
->demangled_name().c_str());
5254 // Scan a relocation for a global symbol.
5256 template<int size
, bool big_endian
>
5258 Target_powerpc
<size
, big_endian
>::Scan::global(
5259 Symbol_table
* symtab
,
5261 Target_powerpc
<size
, big_endian
>* target
,
5262 Sized_relobj_file
<size
, big_endian
>* object
,
5263 unsigned int data_shndx
,
5264 Output_section
* output_section
,
5265 const elfcpp::Rela
<size
, big_endian
>& reloc
,
5266 unsigned int r_type
,
5269 if (this->maybe_skip_tls_get_addr_call(r_type
, gsym
) == Track_tls::SKIP
)
5272 if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
5273 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
5275 this->expect_tls_get_addr_call();
5276 const bool final
= gsym
->final_value_is_known();
5277 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
5278 if (tls_type
!= tls::TLSOPT_NONE
)
5279 this->skip_next_tls_get_addr_call();
5281 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
5282 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
5284 this->expect_tls_get_addr_call();
5285 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
5286 if (tls_type
!= tls::TLSOPT_NONE
)
5287 this->skip_next_tls_get_addr_call();
5290 Powerpc_relobj
<size
, big_endian
>* ppc_object
5291 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
5293 // A STT_GNU_IFUNC symbol may require a PLT entry.
5294 bool is_ifunc
= gsym
->type() == elfcpp::STT_GNU_IFUNC
;
5295 if (is_ifunc
&& this->reloc_needs_plt_for_ifunc(object
, r_type
, true))
5297 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
5298 r_type
, elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
5299 reloc
.get_r_addend());
5300 target
->make_plt_entry(symtab
, layout
, gsym
);
5305 case elfcpp::R_POWERPC_NONE
:
5306 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
5307 case elfcpp::R_POWERPC_GNU_VTENTRY
:
5308 case elfcpp::R_PPC_LOCAL24PC
:
5309 case elfcpp::R_PPC_EMB_MRKREF
:
5310 case elfcpp::R_POWERPC_TLS
:
5313 case elfcpp::R_PPC64_TOC
:
5315 Output_data_got_powerpc
<size
, big_endian
>* got
5316 = target
->got_section(symtab
, layout
);
5317 if (parameters
->options().output_is_position_independent())
5319 Address off
= reloc
.get_r_offset();
5321 && data_shndx
== ppc_object
->opd_shndx()
5322 && ppc_object
->get_opd_discard(off
- 8))
5325 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5326 Powerpc_relobj
<size
, big_endian
>* symobj
= ppc_object
;
5327 if (data_shndx
!= ppc_object
->opd_shndx())
5328 symobj
= static_cast
5329 <Powerpc_relobj
<size
, big_endian
>*>(gsym
->object());
5330 rela_dyn
->add_output_section_relative(got
->output_section(),
5331 elfcpp::R_POWERPC_RELATIVE
,
5333 object
, data_shndx
, off
,
5334 symobj
->toc_base_offset());
5339 case elfcpp::R_PPC64_ADDR64
:
5341 && data_shndx
== ppc_object
->opd_shndx()
5342 && (gsym
->is_defined_in_discarded_section()
5343 || gsym
->object() != object
))
5345 ppc_object
->set_opd_discard(reloc
.get_r_offset());
5349 case elfcpp::R_PPC64_UADDR64
:
5350 case elfcpp::R_POWERPC_ADDR32
:
5351 case elfcpp::R_POWERPC_UADDR32
:
5352 case elfcpp::R_POWERPC_ADDR24
:
5353 case elfcpp::R_POWERPC_ADDR16
:
5354 case elfcpp::R_POWERPC_ADDR16_LO
:
5355 case elfcpp::R_POWERPC_ADDR16_HI
:
5356 case elfcpp::R_POWERPC_ADDR16_HA
:
5357 case elfcpp::R_POWERPC_UADDR16
:
5358 case elfcpp::R_PPC64_ADDR16_HIGHER
:
5359 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
5360 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
5361 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
5362 case elfcpp::R_PPC64_ADDR16_DS
:
5363 case elfcpp::R_PPC64_ADDR16_LO_DS
:
5364 case elfcpp::R_POWERPC_ADDR14
:
5365 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
5366 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
5368 // Make a PLT entry if necessary.
5369 if (gsym
->needs_plt_entry())
5373 target
->push_branch(ppc_object
, data_shndx
,
5374 reloc
.get_r_offset(), r_type
,
5375 elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
5376 reloc
.get_r_addend());
5377 target
->make_plt_entry(symtab
, layout
, gsym
);
5379 // Since this is not a PC-relative relocation, we may be
5380 // taking the address of a function. In that case we need to
5381 // set the entry in the dynamic symbol table to the address of
5382 // the PLT call stub.
5384 && gsym
->is_from_dynobj()
5385 && !parameters
->options().output_is_position_independent())
5386 gsym
->set_needs_dynsym_value();
5388 // Make a dynamic relocation if necessary.
5389 if (needs_dynamic_reloc
<size
>(gsym
, Scan::get_reference_flags(r_type
))
5390 || (size
== 64 && is_ifunc
))
5392 if (gsym
->may_need_copy_reloc())
5394 target
->copy_reloc(symtab
, layout
, object
,
5395 data_shndx
, output_section
, gsym
, reloc
);
5397 else if ((size
== 32
5398 && r_type
== elfcpp::R_POWERPC_ADDR32
5399 && gsym
->can_use_relative_reloc(false)
5400 && !(gsym
->visibility() == elfcpp::STV_PROTECTED
5401 && parameters
->options().shared()))
5403 && r_type
== elfcpp::R_PPC64_ADDR64
5404 && (gsym
->can_use_relative_reloc(false)
5405 || data_shndx
== ppc_object
->opd_shndx())))
5407 Reloc_section
* rela_dyn
5408 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
5409 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
5410 : elfcpp::R_POWERPC_RELATIVE
);
5411 rela_dyn
->add_symbolless_global_addend(
5412 gsym
, dynrel
, output_section
, object
, data_shndx
,
5413 reloc
.get_r_offset(), reloc
.get_r_addend());
5417 Reloc_section
* rela_dyn
5418 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
5419 check_non_pic(object
, r_type
);
5420 rela_dyn
->add_global(gsym
, r_type
, output_section
,
5422 reloc
.get_r_offset(),
5423 reloc
.get_r_addend());
5429 case elfcpp::R_PPC_PLTREL24
:
5430 case elfcpp::R_POWERPC_REL24
:
5433 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
5435 elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
5436 reloc
.get_r_addend());
5437 if (gsym
->needs_plt_entry()
5438 || (!gsym
->final_value_is_known()
5439 && (gsym
->is_undefined()
5440 || gsym
->is_from_dynobj()
5441 || gsym
->is_preemptible())))
5442 target
->make_plt_entry(symtab
, layout
, gsym
);
5446 case elfcpp::R_PPC64_REL64
:
5447 case elfcpp::R_POWERPC_REL32
:
5448 // Make a dynamic relocation if necessary.
5449 if (needs_dynamic_reloc
<size
>(gsym
, Scan::get_reference_flags(r_type
)))
5451 if (gsym
->may_need_copy_reloc())
5453 target
->copy_reloc(symtab
, layout
, object
,
5454 data_shndx
, output_section
, gsym
,
5459 Reloc_section
* rela_dyn
5460 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
5461 check_non_pic(object
, r_type
);
5462 rela_dyn
->add_global(gsym
, r_type
, output_section
, object
,
5463 data_shndx
, reloc
.get_r_offset(),
5464 reloc
.get_r_addend());
5469 case elfcpp::R_POWERPC_REL14
:
5470 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
5471 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
5473 target
->push_branch(ppc_object
, data_shndx
, reloc
.get_r_offset(),
5474 r_type
, elfcpp::elf_r_sym
<size
>(reloc
.get_r_info()),
5475 reloc
.get_r_addend());
5478 case elfcpp::R_POWERPC_REL16
:
5479 case elfcpp::R_POWERPC_REL16_LO
:
5480 case elfcpp::R_POWERPC_REL16_HI
:
5481 case elfcpp::R_POWERPC_REL16_HA
:
5482 case elfcpp::R_POWERPC_SECTOFF
:
5483 case elfcpp::R_POWERPC_TPREL16
:
5484 case elfcpp::R_POWERPC_DTPREL16
:
5485 case elfcpp::R_POWERPC_SECTOFF_LO
:
5486 case elfcpp::R_POWERPC_TPREL16_LO
:
5487 case elfcpp::R_POWERPC_DTPREL16_LO
:
5488 case elfcpp::R_POWERPC_SECTOFF_HI
:
5489 case elfcpp::R_POWERPC_TPREL16_HI
:
5490 case elfcpp::R_POWERPC_DTPREL16_HI
:
5491 case elfcpp::R_POWERPC_SECTOFF_HA
:
5492 case elfcpp::R_POWERPC_TPREL16_HA
:
5493 case elfcpp::R_POWERPC_DTPREL16_HA
:
5494 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
5495 case elfcpp::R_PPC64_TPREL16_HIGHER
:
5496 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
5497 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
5498 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
5499 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
5500 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
5501 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
5502 case elfcpp::R_PPC64_TPREL16_DS
:
5503 case elfcpp::R_PPC64_TPREL16_LO_DS
:
5504 case elfcpp::R_PPC64_DTPREL16_DS
:
5505 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
5506 case elfcpp::R_PPC64_SECTOFF_DS
:
5507 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
5508 case elfcpp::R_PPC64_TLSGD
:
5509 case elfcpp::R_PPC64_TLSLD
:
5512 case elfcpp::R_POWERPC_GOT16
:
5513 case elfcpp::R_POWERPC_GOT16_LO
:
5514 case elfcpp::R_POWERPC_GOT16_HI
:
5515 case elfcpp::R_POWERPC_GOT16_HA
:
5516 case elfcpp::R_PPC64_GOT16_DS
:
5517 case elfcpp::R_PPC64_GOT16_LO_DS
:
5519 // The symbol requires a GOT entry.
5520 Output_data_got_powerpc
<size
, big_endian
>* got
;
5522 got
= target
->got_section(symtab
, layout
);
5523 if (gsym
->final_value_is_known())
5525 if (size
== 32 && is_ifunc
)
5526 got
->add_global_plt(gsym
, GOT_TYPE_STANDARD
);
5528 got
->add_global(gsym
, GOT_TYPE_STANDARD
);
5530 else if (!gsym
->has_got_offset(GOT_TYPE_STANDARD
))
5532 // If we are generating a shared object or a pie, this
5533 // symbol's GOT entry will be set by a dynamic relocation.
5534 unsigned int off
= got
->add_constant(0);
5535 gsym
->set_got_offset(GOT_TYPE_STANDARD
, off
);
5537 Reloc_section
* rela_dyn
5538 = target
->rela_dyn_section(symtab
, layout
, is_ifunc
);
5540 if (gsym
->can_use_relative_reloc(false)
5542 && gsym
->visibility() == elfcpp::STV_PROTECTED
5543 && parameters
->options().shared()))
5545 unsigned int dynrel
= (is_ifunc
? elfcpp::R_POWERPC_IRELATIVE
5546 : elfcpp::R_POWERPC_RELATIVE
);
5547 rela_dyn
->add_global_relative(gsym
, dynrel
, got
, off
, 0, false);
5551 unsigned int dynrel
= elfcpp::R_POWERPC_GLOB_DAT
;
5552 rela_dyn
->add_global(gsym
, dynrel
, got
, off
, 0);
5558 case elfcpp::R_PPC64_TOC16
:
5559 case elfcpp::R_PPC64_TOC16_LO
:
5560 case elfcpp::R_PPC64_TOC16_HI
:
5561 case elfcpp::R_PPC64_TOC16_HA
:
5562 case elfcpp::R_PPC64_TOC16_DS
:
5563 case elfcpp::R_PPC64_TOC16_LO_DS
:
5564 // We need a GOT section.
5565 target
->got_section(symtab
, layout
);
5568 case elfcpp::R_POWERPC_GOT_TLSGD16
:
5569 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
5570 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
5571 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
5573 const bool final
= gsym
->final_value_is_known();
5574 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
5575 if (tls_type
== tls::TLSOPT_NONE
)
5577 Output_data_got_powerpc
<size
, big_endian
>* got
5578 = target
->got_section(symtab
, layout
);
5579 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5580 got
->add_global_pair_with_rel(gsym
, GOT_TYPE_TLSGD
, rela_dyn
,
5581 elfcpp::R_POWERPC_DTPMOD
,
5582 elfcpp::R_POWERPC_DTPREL
);
5584 else if (tls_type
== tls::TLSOPT_TO_IE
)
5586 if (!gsym
->has_got_offset(GOT_TYPE_TPREL
))
5588 Output_data_got_powerpc
<size
, big_endian
>* got
5589 = target
->got_section(symtab
, layout
);
5590 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5591 if (gsym
->is_undefined()
5592 || gsym
->is_from_dynobj())
5594 got
->add_global_with_rel(gsym
, GOT_TYPE_TPREL
, rela_dyn
,
5595 elfcpp::R_POWERPC_TPREL
);
5599 unsigned int off
= got
->add_constant(0);
5600 gsym
->set_got_offset(GOT_TYPE_TPREL
, off
);
5601 unsigned int dynrel
= elfcpp::R_POWERPC_TPREL
;
5602 rela_dyn
->add_symbolless_global_addend(gsym
, dynrel
,
5607 else if (tls_type
== tls::TLSOPT_TO_LE
)
5609 // no GOT relocs needed for Local Exec.
5616 case elfcpp::R_POWERPC_GOT_TLSLD16
:
5617 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
5618 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
5619 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
5621 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
5622 if (tls_type
== tls::TLSOPT_NONE
)
5623 target
->tlsld_got_offset(symtab
, layout
, object
);
5624 else if (tls_type
== tls::TLSOPT_TO_LE
)
5626 // no GOT relocs needed for Local Exec.
5627 if (parameters
->options().emit_relocs())
5629 Output_section
* os
= layout
->tls_segment()->first_section();
5630 gold_assert(os
!= NULL
);
5631 os
->set_needs_symtab_index();
5639 case elfcpp::R_POWERPC_GOT_DTPREL16
:
5640 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
5641 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
5642 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
5644 Output_data_got_powerpc
<size
, big_endian
>* got
5645 = target
->got_section(symtab
, layout
);
5646 if (!gsym
->final_value_is_known()
5647 && (gsym
->is_from_dynobj()
5648 || gsym
->is_undefined()
5649 || gsym
->is_preemptible()))
5650 got
->add_global_with_rel(gsym
, GOT_TYPE_DTPREL
,
5651 target
->rela_dyn_section(layout
),
5652 elfcpp::R_POWERPC_DTPREL
);
5654 got
->add_global_tls(gsym
, GOT_TYPE_DTPREL
);
5658 case elfcpp::R_POWERPC_GOT_TPREL16
:
5659 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
5660 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
5661 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
5663 const bool final
= gsym
->final_value_is_known();
5664 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
5665 if (tls_type
== tls::TLSOPT_NONE
)
5667 if (!gsym
->has_got_offset(GOT_TYPE_TPREL
))
5669 Output_data_got_powerpc
<size
, big_endian
>* got
5670 = target
->got_section(symtab
, layout
);
5671 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
5672 if (gsym
->is_undefined()
5673 || gsym
->is_from_dynobj())
5675 got
->add_global_with_rel(gsym
, GOT_TYPE_TPREL
, rela_dyn
,
5676 elfcpp::R_POWERPC_TPREL
);
5680 unsigned int off
= got
->add_constant(0);
5681 gsym
->set_got_offset(GOT_TYPE_TPREL
, off
);
5682 unsigned int dynrel
= elfcpp::R_POWERPC_TPREL
;
5683 rela_dyn
->add_symbolless_global_addend(gsym
, dynrel
,
5688 else if (tls_type
== tls::TLSOPT_TO_LE
)
5690 // no GOT relocs needed for Local Exec.
5698 unsupported_reloc_global(object
, r_type
, gsym
);
5704 case elfcpp::R_POWERPC_GOT_TLSLD16
:
5705 case elfcpp::R_POWERPC_GOT_TLSGD16
:
5706 case elfcpp::R_POWERPC_GOT_TPREL16
:
5707 case elfcpp::R_POWERPC_GOT_DTPREL16
:
5708 case elfcpp::R_POWERPC_GOT16
:
5709 case elfcpp::R_PPC64_GOT16_DS
:
5710 case elfcpp::R_PPC64_TOC16
:
5711 case elfcpp::R_PPC64_TOC16_DS
:
5712 ppc_object
->set_has_small_toc_reloc();
5718 // Process relocations for gc.
5720 template<int size
, bool big_endian
>
5722 Target_powerpc
<size
, big_endian
>::gc_process_relocs(
5723 Symbol_table
* symtab
,
5725 Sized_relobj_file
<size
, big_endian
>* object
,
5726 unsigned int data_shndx
,
5728 const unsigned char* prelocs
,
5730 Output_section
* output_section
,
5731 bool needs_special_offset_handling
,
5732 size_t local_symbol_count
,
5733 const unsigned char* plocal_symbols
)
5735 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
5736 typedef typename Target_powerpc
<size
, big_endian
>::Scan Scan
;
5737 Powerpc_relobj
<size
, big_endian
>* ppc_object
5738 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
5740 ppc_object
->set_opd_valid();
5741 if (size
== 64 && data_shndx
== ppc_object
->opd_shndx())
5743 typename Powerpc_relobj
<size
, big_endian
>::Access_from::iterator p
;
5744 for (p
= ppc_object
->access_from_map()->begin();
5745 p
!= ppc_object
->access_from_map()->end();
5748 Address dst_off
= p
->first
;
5749 unsigned int dst_indx
= ppc_object
->get_opd_ent(dst_off
);
5750 typename Powerpc_relobj
<size
, big_endian
>::Section_refs::iterator s
;
5751 for (s
= p
->second
.begin(); s
!= p
->second
.end(); ++s
)
5753 Object
* src_obj
= s
->first
;
5754 unsigned int src_indx
= s
->second
;
5755 symtab
->gc()->add_reference(src_obj
, src_indx
,
5756 ppc_object
, dst_indx
);
5760 ppc_object
->access_from_map()->clear();
5761 ppc_object
->process_gc_mark(symtab
);
5762 // Don't look at .opd relocs as .opd will reference everything.
5766 gold::gc_process_relocs
<size
, big_endian
, Powerpc
, elfcpp::SHT_RELA
, Scan
,
5767 typename
Target_powerpc::Relocatable_size_for_reloc
>(
5776 needs_special_offset_handling
,
5781 // Handle target specific gc actions when adding a gc reference from
5782 // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX
5783 // and DST_OFF. For powerpc64, this adds a referenc to the code
5784 // section of a function descriptor.
5786 template<int size
, bool big_endian
>
5788 Target_powerpc
<size
, big_endian
>::do_gc_add_reference(
5789 Symbol_table
* symtab
,
5791 unsigned int src_shndx
,
5793 unsigned int dst_shndx
,
5794 Address dst_off
) const
5796 if (size
!= 64 || dst_obj
->is_dynamic())
5799 Powerpc_relobj
<size
, big_endian
>* ppc_object
5800 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(dst_obj
);
5801 if (dst_shndx
== ppc_object
->opd_shndx())
5803 if (ppc_object
->opd_valid())
5805 dst_shndx
= ppc_object
->get_opd_ent(dst_off
);
5806 symtab
->gc()->add_reference(src_obj
, src_shndx
, dst_obj
, dst_shndx
);
5810 // If we haven't run scan_opd_relocs, we must delay
5811 // processing this function descriptor reference.
5812 ppc_object
->add_reference(src_obj
, src_shndx
, dst_off
);
5817 // Add any special sections for this symbol to the gc work list.
5818 // For powerpc64, this adds the code section of a function
5821 template<int size
, bool big_endian
>
5823 Target_powerpc
<size
, big_endian
>::do_gc_mark_symbol(
5824 Symbol_table
* symtab
,
5829 Powerpc_relobj
<size
, big_endian
>* ppc_object
5830 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(sym
->object());
5832 unsigned int shndx
= sym
->shndx(&is_ordinary
);
5833 if (is_ordinary
&& shndx
== ppc_object
->opd_shndx())
5835 Sized_symbol
<size
>* gsym
= symtab
->get_sized_symbol
<size
>(sym
);
5836 Address dst_off
= gsym
->value();
5837 if (ppc_object
->opd_valid())
5839 unsigned int dst_indx
= ppc_object
->get_opd_ent(dst_off
);
5840 symtab
->gc()->worklist().push(Section_id(ppc_object
, dst_indx
));
5843 ppc_object
->add_gc_mark(dst_off
);
5848 // For a symbol location in .opd, set LOC to the location of the
5851 template<int size
, bool big_endian
>
5853 Target_powerpc
<size
, big_endian
>::do_function_location(
5854 Symbol_location
* loc
) const
5858 if (loc
->object
->is_dynamic())
5860 Powerpc_dynobj
<size
, big_endian
>* ppc_object
5861 = static_cast<Powerpc_dynobj
<size
, big_endian
>*>(loc
->object
);
5862 if (loc
->shndx
== ppc_object
->opd_shndx())
5865 Address off
= loc
->offset
- ppc_object
->opd_address();
5866 loc
->shndx
= ppc_object
->get_opd_ent(off
, &dest_off
);
5867 loc
->offset
= dest_off
;
5872 const Powerpc_relobj
<size
, big_endian
>* ppc_object
5873 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>(loc
->object
);
5874 if (loc
->shndx
== ppc_object
->opd_shndx())
5877 loc
->shndx
= ppc_object
->get_opd_ent(loc
->offset
, &dest_off
);
5878 loc
->offset
= dest_off
;
5884 // Scan relocations for a section.
5886 template<int size
, bool big_endian
>
5888 Target_powerpc
<size
, big_endian
>::scan_relocs(
5889 Symbol_table
* symtab
,
5891 Sized_relobj_file
<size
, big_endian
>* object
,
5892 unsigned int data_shndx
,
5893 unsigned int sh_type
,
5894 const unsigned char* prelocs
,
5896 Output_section
* output_section
,
5897 bool needs_special_offset_handling
,
5898 size_t local_symbol_count
,
5899 const unsigned char* plocal_symbols
)
5901 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
5902 typedef typename Target_powerpc
<size
, big_endian
>::Scan Scan
;
5904 if (sh_type
== elfcpp::SHT_REL
)
5906 gold_error(_("%s: unsupported REL reloc section"),
5907 object
->name().c_str());
5911 gold::scan_relocs
<size
, big_endian
, Powerpc
, elfcpp::SHT_RELA
, Scan
>(
5920 needs_special_offset_handling
,
5925 // Functor class for processing the global symbol table.
5926 // Removes symbols defined on discarded opd entries.
5928 template<bool big_endian
>
5929 class Global_symbol_visitor_opd
5932 Global_symbol_visitor_opd()
5936 operator()(Sized_symbol
<64>* sym
)
5938 if (sym
->has_symtab_index()
5939 || sym
->source() != Symbol::FROM_OBJECT
5940 || !sym
->in_real_elf())
5943 if (sym
->object()->is_dynamic())
5946 Powerpc_relobj
<64, big_endian
>* symobj
5947 = static_cast<Powerpc_relobj
<64, big_endian
>*>(sym
->object());
5948 if (symobj
->opd_shndx() == 0)
5952 unsigned int shndx
= sym
->shndx(&is_ordinary
);
5953 if (shndx
== symobj
->opd_shndx()
5954 && symobj
->get_opd_discard(sym
->value()))
5955 sym
->set_symtab_index(-1U);
5959 template<int size
, bool big_endian
>
5961 Target_powerpc
<size
, big_endian
>::define_save_restore_funcs(
5963 Symbol_table
* symtab
)
5967 Output_data_save_res
<64, big_endian
>* savres
5968 = new Output_data_save_res
<64, big_endian
>(symtab
);
5969 layout
->add_output_section_data(".text", elfcpp::SHT_PROGBITS
,
5970 elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
,
5971 savres
, ORDER_TEXT
, false);
5975 // Sort linker created .got section first (for the header), then input
5976 // sections belonging to files using small model code.
5978 template<bool big_endian
>
5979 class Sort_toc_sections
5983 operator()(const Output_section::Input_section
& is1
,
5984 const Output_section::Input_section
& is2
) const
5986 if (!is1
.is_input_section() && is2
.is_input_section())
5989 = (is1
.is_input_section()
5990 && (static_cast<const Powerpc_relobj
<64, big_endian
>*>(is1
.relobj())
5991 ->has_small_toc_reloc()));
5993 = (is2
.is_input_section()
5994 && (static_cast<const Powerpc_relobj
<64, big_endian
>*>(is2
.relobj())
5995 ->has_small_toc_reloc()));
5996 return small1
&& !small2
;
6000 // Finalize the sections.
6002 template<int size
, bool big_endian
>
6004 Target_powerpc
<size
, big_endian
>::do_finalize_sections(
6006 const Input_objects
*,
6007 Symbol_table
* symtab
)
6009 if (parameters
->doing_static_link())
6011 // At least some versions of glibc elf-init.o have a strong
6012 // reference to __rela_iplt marker syms. A weak ref would be
6014 if (this->iplt_
!= NULL
)
6016 Reloc_section
* rel
= this->iplt_
->rel_plt();
6017 symtab
->define_in_output_data("__rela_iplt_start", NULL
,
6018 Symbol_table::PREDEFINED
, rel
, 0, 0,
6019 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
6020 elfcpp::STV_HIDDEN
, 0, false, true);
6021 symtab
->define_in_output_data("__rela_iplt_end", NULL
,
6022 Symbol_table::PREDEFINED
, rel
, 0, 0,
6023 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
6024 elfcpp::STV_HIDDEN
, 0, true, true);
6028 symtab
->define_as_constant("__rela_iplt_start", NULL
,
6029 Symbol_table::PREDEFINED
, 0, 0,
6030 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
6031 elfcpp::STV_HIDDEN
, 0, true, false);
6032 symtab
->define_as_constant("__rela_iplt_end", NULL
,
6033 Symbol_table::PREDEFINED
, 0, 0,
6034 elfcpp::STT_NOTYPE
, elfcpp::STB_GLOBAL
,
6035 elfcpp::STV_HIDDEN
, 0, true, false);
6041 typedef Global_symbol_visitor_opd
<big_endian
> Symbol_visitor
;
6042 symtab
->for_all_symbols
<64, Symbol_visitor
>(Symbol_visitor());
6044 if (!parameters
->options().relocatable())
6046 this->define_save_restore_funcs(layout
, symtab
);
6048 // Annoyingly, we need to make these sections now whether or
6049 // not we need them. If we delay until do_relax then we
6050 // need to mess with the relaxation machinery checkpointing.
6051 this->got_section(symtab
, layout
);
6052 this->make_brlt_section(layout
);
6054 if (parameters
->options().toc_sort())
6056 Output_section
* os
= this->got_
->output_section();
6057 if (os
!= NULL
&& os
->input_sections().size() > 1)
6058 std::stable_sort(os
->input_sections().begin(),
6059 os
->input_sections().end(),
6060 Sort_toc_sections
<big_endian
>());
6065 // Fill in some more dynamic tags.
6066 Output_data_dynamic
* odyn
= layout
->dynamic_data();
6069 const Reloc_section
* rel_plt
= (this->plt_
== NULL
6071 : this->plt_
->rel_plt());
6072 layout
->add_target_dynamic_tags(false, this->plt_
, rel_plt
,
6073 this->rela_dyn_
, true, size
== 32);
6077 if (this->got_
!= NULL
)
6079 this->got_
->finalize_data_size();
6080 odyn
->add_section_plus_offset(elfcpp::DT_PPC_GOT
,
6081 this->got_
, this->got_
->g_o_t());
6086 if (this->glink_
!= NULL
)
6088 this->glink_
->finalize_data_size();
6089 odyn
->add_section_plus_offset(elfcpp::DT_PPC64_GLINK
,
6091 (this->glink_
->pltresolve_size
6097 // Emit any relocs we saved in an attempt to avoid generating COPY
6099 if (this->copy_relocs_
.any_saved_relocs())
6100 this->copy_relocs_
.emit(this->rela_dyn_section(layout
));
6103 // Return TRUE iff INSN is one we expect on a _LO variety toc/got
6107 ok_lo_toc_insn(uint32_t insn
)
6109 return ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
6110 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
6111 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
6112 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
6113 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
6114 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
6115 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
6116 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
6117 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
6118 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
6119 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
6120 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
6121 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
6122 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
6123 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
6125 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
6126 && ((insn
& 3) == 0 || (insn
& 3) == 3))
6127 || (insn
& (0x3f << 26)) == 12u << 26 /* addic */);
6130 // Return the value to use for a branch relocation.
6132 template<int size
, bool big_endian
>
6133 typename Target_powerpc
<size
, big_endian
>::Address
6134 Target_powerpc
<size
, big_endian
>::symval_for_branch(
6135 const Symbol_table
* symtab
,
6137 const Sized_symbol
<size
>* gsym
,
6138 Powerpc_relobj
<size
, big_endian
>* object
,
6139 unsigned int *dest_shndx
)
6145 // If the symbol is defined in an opd section, ie. is a function
6146 // descriptor, use the function descriptor code entry address
6147 Powerpc_relobj
<size
, big_endian
>* symobj
= object
;
6149 && gsym
->source() != Symbol::FROM_OBJECT
)
6152 symobj
= static_cast<Powerpc_relobj
<size
, big_endian
>*>(gsym
->object());
6153 unsigned int shndx
= symobj
->opd_shndx();
6156 Address opd_addr
= symobj
->get_output_section_offset(shndx
);
6157 gold_assert(opd_addr
!= invalid_address
);
6158 opd_addr
+= symobj
->output_section(shndx
)->address();
6159 if (value
>= opd_addr
&& value
< opd_addr
+ symobj
->section_size(shndx
))
6162 *dest_shndx
= symobj
->get_opd_ent(value
- opd_addr
, &sec_off
);
6163 if (symtab
->is_section_folded(symobj
, *dest_shndx
))
6166 = symtab
->icf()->get_folded_section(symobj
, *dest_shndx
);
6167 symobj
= static_cast<Powerpc_relobj
<size
, big_endian
>*>(folded
.first
);
6168 *dest_shndx
= folded
.second
;
6170 Address sec_addr
= symobj
->get_output_section_offset(*dest_shndx
);
6171 gold_assert(sec_addr
!= invalid_address
);
6172 sec_addr
+= symobj
->output_section(*dest_shndx
)->address();
6173 value
= sec_addr
+ sec_off
;
6178 // Perform a relocation.
6180 template<int size
, bool big_endian
>
6182 Target_powerpc
<size
, big_endian
>::Relocate::relocate(
6183 const Relocate_info
<size
, big_endian
>* relinfo
,
6184 Target_powerpc
* target
,
6187 const elfcpp::Rela
<size
, big_endian
>& rela
,
6188 unsigned int r_type
,
6189 const Sized_symbol
<size
>* gsym
,
6190 const Symbol_value
<size
>* psymval
,
6191 unsigned char* view
,
6193 section_size_type view_size
)
6195 switch (this->maybe_skip_tls_get_addr_call(r_type
, gsym
))
6197 case Track_tls::NOT_EXPECTED
:
6198 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
6199 _("__tls_get_addr call lacks marker reloc"));
6201 case Track_tls::EXPECTED
:
6202 // We have already complained.
6204 case Track_tls::SKIP
:
6206 case Track_tls::NORMAL
:
6210 typedef Powerpc_relocate_functions
<size
, big_endian
> Reloc
;
6211 typedef typename
elfcpp::Swap
<32, big_endian
>::Valtype Insn
;
6212 Powerpc_relobj
<size
, big_endian
>* const object
6213 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(relinfo
->object
);
6215 bool has_plt_value
= false;
6216 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
6218 ? use_plt_offset
<size
>(gsym
, Scan::get_reference_flags(r_type
))
6219 : object
->local_has_plt_offset(r_sym
))
6220 && (!psymval
->is_ifunc_symbol()
6221 || Scan::reloc_needs_plt_for_ifunc(object
, r_type
, false)))
6223 Stub_table
<size
, big_endian
>* stub_table
6224 = object
->stub_table(relinfo
->data_shndx
);
6225 if (stub_table
== NULL
)
6227 // This is a ref from a data section to an ifunc symbol.
6228 if (target
->stub_tables().size() != 0)
6229 stub_table
= target
->stub_tables()[0];
6231 gold_assert(stub_table
!= NULL
);
6234 off
= stub_table
->find_plt_call_entry(object
, gsym
, r_type
,
6235 rela
.get_r_addend());
6237 off
= stub_table
->find_plt_call_entry(object
, r_sym
, r_type
,
6238 rela
.get_r_addend());
6239 gold_assert(off
!= invalid_address
);
6240 value
= stub_table
->stub_address() + off
;
6241 has_plt_value
= true;
6244 if (r_type
== elfcpp::R_POWERPC_GOT16
6245 || r_type
== elfcpp::R_POWERPC_GOT16_LO
6246 || r_type
== elfcpp::R_POWERPC_GOT16_HI
6247 || r_type
== elfcpp::R_POWERPC_GOT16_HA
6248 || r_type
== elfcpp::R_PPC64_GOT16_DS
6249 || r_type
== elfcpp::R_PPC64_GOT16_LO_DS
)
6253 gold_assert(gsym
->has_got_offset(GOT_TYPE_STANDARD
));
6254 value
= gsym
->got_offset(GOT_TYPE_STANDARD
);
6258 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
6259 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_STANDARD
));
6260 value
= object
->local_got_offset(r_sym
, GOT_TYPE_STANDARD
);
6262 value
-= target
->got_section()->got_base_offset(object
);
6264 else if (r_type
== elfcpp::R_PPC64_TOC
)
6266 value
= (target
->got_section()->output_section()->address()
6267 + object
->toc_base_offset());
6269 else if (gsym
!= NULL
6270 && (r_type
== elfcpp::R_POWERPC_REL24
6271 || r_type
== elfcpp::R_PPC_PLTREL24
)
6276 typedef typename
elfcpp::Swap
<32, big_endian
>::Valtype Valtype
;
6277 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
6278 bool can_plt_call
= false;
6279 if (rela
.get_r_offset() + 8 <= view_size
)
6281 Valtype insn
= elfcpp::Swap
<32, big_endian
>::readval(wv
);
6282 Valtype insn2
= elfcpp::Swap
<32, big_endian
>::readval(wv
+ 1);
6285 || insn2
== cror_15_15_15
|| insn2
== cror_31_31_31
))
6287 elfcpp::Swap
<32, big_endian
>::writeval(wv
+ 1, ld_2_1
+ 40);
6288 can_plt_call
= true;
6293 // If we don't have a branch and link followed by a nop,
6294 // we can't go via the plt because there is no place to
6295 // put a toc restoring instruction.
6296 // Unless we know we won't be returning.
6297 if (strcmp(gsym
->name(), "__libc_start_main") == 0)
6298 can_plt_call
= true;
6302 // This is not an error in one special case: A self
6303 // call. It isn't possible to cheaply verify we have
6304 // such a call so just check for a call to the same
6307 Address code
= value
;
6308 if (gsym
->source() == Symbol::FROM_OBJECT
6309 && gsym
->object() == object
)
6311 Address addend
= rela
.get_r_addend();
6312 unsigned int dest_shndx
;
6313 Address opdent
= psymval
->value(object
, addend
);
6314 code
= target
->symval_for_branch(relinfo
->symtab
, opdent
,
6315 gsym
, object
, &dest_shndx
);
6317 if (dest_shndx
== 0)
6318 dest_shndx
= gsym
->shndx(&is_ordinary
);
6319 ok
= dest_shndx
== relinfo
->data_shndx
;
6323 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
6324 _("call lacks nop, can't restore toc; "
6325 "recompile with -fPIC"));
6331 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
6332 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
6333 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HI
6334 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HA
)
6336 // First instruction of a global dynamic sequence, arg setup insn.
6337 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
6338 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
6339 enum Got_type got_type
= GOT_TYPE_STANDARD
;
6340 if (tls_type
== tls::TLSOPT_NONE
)
6341 got_type
= GOT_TYPE_TLSGD
;
6342 else if (tls_type
== tls::TLSOPT_TO_IE
)
6343 got_type
= GOT_TYPE_TPREL
;
6344 if (got_type
!= GOT_TYPE_STANDARD
)
6348 gold_assert(gsym
->has_got_offset(got_type
));
6349 value
= gsym
->got_offset(got_type
);
6353 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
6354 gold_assert(object
->local_has_got_offset(r_sym
, got_type
));
6355 value
= object
->local_got_offset(r_sym
, got_type
);
6357 value
-= target
->got_section()->got_base_offset(object
);
6359 if (tls_type
== tls::TLSOPT_TO_IE
)
6361 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
6362 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
6364 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6365 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
6366 insn
&= (1 << 26) - (1 << 16); // extract rt,ra from addi
6368 insn
|= 32 << 26; // lwz
6370 insn
|= 58 << 26; // ld
6371 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6373 r_type
+= (elfcpp::R_POWERPC_GOT_TPREL16
6374 - elfcpp::R_POWERPC_GOT_TLSGD16
);
6376 else if (tls_type
== tls::TLSOPT_TO_LE
)
6378 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
6379 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
6381 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6382 Insn insn
= addis_3_13
;
6385 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6386 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
6387 value
= psymval
->value(object
, rela
.get_r_addend());
6391 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6393 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6394 r_type
= elfcpp::R_POWERPC_NONE
;
6398 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
6399 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
6400 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HI
6401 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HA
)
6403 // First instruction of a local dynamic sequence, arg setup insn.
6404 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
6405 if (tls_type
== tls::TLSOPT_NONE
)
6407 value
= target
->tlsld_got_offset();
6408 value
-= target
->got_section()->got_base_offset(object
);
6412 gold_assert(tls_type
== tls::TLSOPT_TO_LE
);
6413 if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
6414 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
)
6416 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6417 Insn insn
= addis_3_13
;
6420 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6421 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
6426 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6428 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6429 r_type
= elfcpp::R_POWERPC_NONE
;
6433 else if (r_type
== elfcpp::R_POWERPC_GOT_DTPREL16
6434 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_LO
6435 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_HI
6436 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_HA
)
6438 // Accesses relative to a local dynamic sequence address,
6439 // no optimisation here.
6442 gold_assert(gsym
->has_got_offset(GOT_TYPE_DTPREL
));
6443 value
= gsym
->got_offset(GOT_TYPE_DTPREL
);
6447 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
6448 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_DTPREL
));
6449 value
= object
->local_got_offset(r_sym
, GOT_TYPE_DTPREL
);
6451 value
-= target
->got_section()->got_base_offset(object
);
6453 else if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
6454 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
6455 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HI
6456 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HA
)
6458 // First instruction of initial exec sequence.
6459 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
6460 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
6461 if (tls_type
== tls::TLSOPT_NONE
)
6465 gold_assert(gsym
->has_got_offset(GOT_TYPE_TPREL
));
6466 value
= gsym
->got_offset(GOT_TYPE_TPREL
);
6470 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
6471 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_TPREL
));
6472 value
= object
->local_got_offset(r_sym
, GOT_TYPE_TPREL
);
6474 value
-= target
->got_section()->got_base_offset(object
);
6478 gold_assert(tls_type
== tls::TLSOPT_TO_LE
);
6479 if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
6480 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
)
6482 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6483 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
6484 insn
&= (1 << 26) - (1 << 21); // extract rt from ld
6489 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6490 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
6491 value
= psymval
->value(object
, rela
.get_r_addend());
6495 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6497 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6498 r_type
= elfcpp::R_POWERPC_NONE
;
6502 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
6503 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
6505 // Second instruction of a global dynamic sequence,
6506 // the __tls_get_addr call
6507 this->expect_tls_get_addr_call(relinfo
, relnum
, rela
.get_r_offset());
6508 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
6509 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
6510 if (tls_type
!= tls::TLSOPT_NONE
)
6512 if (tls_type
== tls::TLSOPT_TO_IE
)
6514 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
6515 Insn insn
= add_3_3_13
;
6518 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6519 r_type
= elfcpp::R_POWERPC_NONE
;
6523 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
6524 Insn insn
= addi_3_3
;
6525 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6526 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
6527 view
+= 2 * big_endian
;
6528 value
= psymval
->value(object
, rela
.get_r_addend());
6530 this->skip_next_tls_get_addr_call();
6533 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
6534 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
6536 // Second instruction of a local dynamic sequence,
6537 // the __tls_get_addr call
6538 this->expect_tls_get_addr_call(relinfo
, relnum
, rela
.get_r_offset());
6539 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
6540 if (tls_type
== tls::TLSOPT_TO_LE
)
6542 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
6543 Insn insn
= addi_3_3
;
6544 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6545 this->skip_next_tls_get_addr_call();
6546 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
6547 view
+= 2 * big_endian
;
6551 else if (r_type
== elfcpp::R_POWERPC_TLS
)
6553 // Second instruction of an initial exec sequence
6554 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
6555 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
6556 if (tls_type
== tls::TLSOPT_TO_LE
)
6558 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
6559 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
6560 unsigned int reg
= size
== 32 ? 2 : 13;
6561 insn
= at_tls_transform(insn
, reg
);
6562 gold_assert(insn
!= 0);
6563 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6564 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
6565 view
+= 2 * big_endian
;
6566 value
= psymval
->value(object
, rela
.get_r_addend());
6569 else if (!has_plt_value
)
6572 unsigned int dest_shndx
;
6573 if (r_type
!= elfcpp::R_PPC_PLTREL24
)
6574 addend
= rela
.get_r_addend();
6575 value
= psymval
->value(object
, addend
);
6576 if (size
== 64 && is_branch_reloc(r_type
))
6577 value
= target
->symval_for_branch(relinfo
->symtab
, value
,
6578 gsym
, object
, &dest_shndx
);
6579 unsigned int max_branch_offset
= 0;
6580 if (r_type
== elfcpp::R_POWERPC_REL24
6581 || r_type
== elfcpp::R_PPC_PLTREL24
6582 || r_type
== elfcpp::R_PPC_LOCAL24PC
)
6583 max_branch_offset
= 1 << 25;
6584 else if (r_type
== elfcpp::R_POWERPC_REL14
6585 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
6586 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
)
6587 max_branch_offset
= 1 << 15;
6588 if (max_branch_offset
!= 0
6589 && value
- address
+ max_branch_offset
>= 2 * max_branch_offset
)
6591 Stub_table
<size
, big_endian
>* stub_table
6592 = object
->stub_table(relinfo
->data_shndx
);
6593 gold_assert(stub_table
!= NULL
);
6594 Address off
= stub_table
->find_long_branch_entry(object
, value
);
6595 if (off
!= invalid_address
)
6596 value
= stub_table
->stub_address() + stub_table
->plt_size() + off
;
6602 case elfcpp::R_PPC64_REL64
:
6603 case elfcpp::R_POWERPC_REL32
:
6604 case elfcpp::R_POWERPC_REL24
:
6605 case elfcpp::R_PPC_PLTREL24
:
6606 case elfcpp::R_PPC_LOCAL24PC
:
6607 case elfcpp::R_POWERPC_REL16
:
6608 case elfcpp::R_POWERPC_REL16_LO
:
6609 case elfcpp::R_POWERPC_REL16_HI
:
6610 case elfcpp::R_POWERPC_REL16_HA
:
6611 case elfcpp::R_POWERPC_REL14
:
6612 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
6613 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
6617 case elfcpp::R_PPC64_TOC16
:
6618 case elfcpp::R_PPC64_TOC16_LO
:
6619 case elfcpp::R_PPC64_TOC16_HI
:
6620 case elfcpp::R_PPC64_TOC16_HA
:
6621 case elfcpp::R_PPC64_TOC16_DS
:
6622 case elfcpp::R_PPC64_TOC16_LO_DS
:
6623 // Subtract the TOC base address.
6624 value
-= (target
->got_section()->output_section()->address()
6625 + object
->toc_base_offset());
6628 case elfcpp::R_POWERPC_SECTOFF
:
6629 case elfcpp::R_POWERPC_SECTOFF_LO
:
6630 case elfcpp::R_POWERPC_SECTOFF_HI
:
6631 case elfcpp::R_POWERPC_SECTOFF_HA
:
6632 case elfcpp::R_PPC64_SECTOFF_DS
:
6633 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
6635 value
-= os
->address();
6638 case elfcpp::R_PPC64_TPREL16_DS
:
6639 case elfcpp::R_PPC64_TPREL16_LO_DS
:
6641 // R_PPC_TLSGD and R_PPC_TLSLD
6643 case elfcpp::R_POWERPC_TPREL16
:
6644 case elfcpp::R_POWERPC_TPREL16_LO
:
6645 case elfcpp::R_POWERPC_TPREL16_HI
:
6646 case elfcpp::R_POWERPC_TPREL16_HA
:
6647 case elfcpp::R_POWERPC_TPREL
:
6648 case elfcpp::R_PPC64_TPREL16_HIGHER
:
6649 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
6650 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
6651 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
6652 // tls symbol values are relative to tls_segment()->vaddr()
6656 case elfcpp::R_PPC64_DTPREL16_DS
:
6657 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
6658 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
6659 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
6660 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
6661 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
6663 // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO
6664 // R_PPC_EMB_NADDR16_HI, R_PPC_EMB_NADDR16_HA, R_PPC_EMB_SDAI16
6666 case elfcpp::R_POWERPC_DTPREL16
:
6667 case elfcpp::R_POWERPC_DTPREL16_LO
:
6668 case elfcpp::R_POWERPC_DTPREL16_HI
:
6669 case elfcpp::R_POWERPC_DTPREL16_HA
:
6670 case elfcpp::R_POWERPC_DTPREL
:
6671 // tls symbol values are relative to tls_segment()->vaddr()
6672 value
-= dtp_offset
;
6679 Insn branch_bit
= 0;
6682 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
6683 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
6684 branch_bit
= 1 << 21;
6685 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
6686 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
6688 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
6689 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
6692 if (this->is_isa_v2
)
6694 // Set 'a' bit. This is 0b00010 in BO field for branch
6695 // on CR(BI) insns (BO == 001at or 011at), and 0b01000
6696 // for branch on CTR insns (BO == 1a00t or 1a01t).
6697 if ((insn
& (0x14 << 21)) == (0x04 << 21))
6699 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
6706 // Invert 'y' bit if not the default.
6707 if (static_cast<Signed_address
>(value
) < 0)
6710 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6720 // Multi-instruction sequences that access the TOC can be
6721 // optimized, eg. addis ra,r2,0; addi rb,ra,x;
6722 // to nop; addi rb,r2,x;
6728 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
6729 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
6730 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
6731 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
6732 case elfcpp::R_POWERPC_GOT16_HA
:
6733 case elfcpp::R_PPC64_TOC16_HA
:
6734 if (parameters
->options().toc_optimize())
6736 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6737 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
6738 if ((insn
& ((0x3f << 26) | 0x1f << 16))
6739 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
6740 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
6741 _("toc optimization is not supported "
6742 "for %#08x instruction"), insn
);
6743 else if (value
+ 0x8000 < 0x10000)
6745 elfcpp::Swap
<32, big_endian
>::writeval(iview
, nop
);
6751 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
6752 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
6753 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
6754 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
6755 case elfcpp::R_POWERPC_GOT16_LO
:
6756 case elfcpp::R_PPC64_GOT16_LO_DS
:
6757 case elfcpp::R_PPC64_TOC16_LO
:
6758 case elfcpp::R_PPC64_TOC16_LO_DS
:
6759 if (parameters
->options().toc_optimize())
6761 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
6762 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
6763 if (!ok_lo_toc_insn(insn
))
6764 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
6765 _("toc optimization is not supported "
6766 "for %#08x instruction"), insn
);
6767 else if (value
+ 0x8000 < 0x10000)
6769 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
6771 // Transform addic to addi when we change reg.
6772 insn
&= ~((0x3f << 26) | (0x1f << 16));
6773 insn
|= (14u << 26) | (2 << 16);
6777 insn
&= ~(0x1f << 16);
6780 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
6787 typename
Reloc::Overflow_check overflow
= Reloc::CHECK_NONE
;
6790 case elfcpp::R_POWERPC_ADDR32
:
6791 case elfcpp::R_POWERPC_UADDR32
:
6793 overflow
= Reloc::CHECK_BITFIELD
;
6796 case elfcpp::R_POWERPC_REL32
:
6798 overflow
= Reloc::CHECK_SIGNED
;
6801 case elfcpp::R_POWERPC_ADDR24
:
6802 case elfcpp::R_POWERPC_ADDR16
:
6803 case elfcpp::R_POWERPC_UADDR16
:
6804 case elfcpp::R_PPC64_ADDR16_DS
:
6805 case elfcpp::R_POWERPC_ADDR14
:
6806 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
6807 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
6808 overflow
= Reloc::CHECK_BITFIELD
;
6811 case elfcpp::R_POWERPC_REL24
:
6812 case elfcpp::R_PPC_PLTREL24
:
6813 case elfcpp::R_PPC_LOCAL24PC
:
6814 case elfcpp::R_POWERPC_REL16
:
6815 case elfcpp::R_PPC64_TOC16
:
6816 case elfcpp::R_POWERPC_GOT16
:
6817 case elfcpp::R_POWERPC_SECTOFF
:
6818 case elfcpp::R_POWERPC_TPREL16
:
6819 case elfcpp::R_POWERPC_DTPREL16
:
6820 case elfcpp::R_PPC64_TPREL16_DS
:
6821 case elfcpp::R_PPC64_DTPREL16_DS
:
6822 case elfcpp::R_PPC64_TOC16_DS
:
6823 case elfcpp::R_PPC64_GOT16_DS
:
6824 case elfcpp::R_PPC64_SECTOFF_DS
:
6825 case elfcpp::R_POWERPC_REL14
:
6826 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
6827 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
6828 case elfcpp::R_POWERPC_GOT_TLSGD16
:
6829 case elfcpp::R_POWERPC_GOT_TLSLD16
:
6830 case elfcpp::R_POWERPC_GOT_TPREL16
:
6831 case elfcpp::R_POWERPC_GOT_DTPREL16
:
6832 overflow
= Reloc::CHECK_SIGNED
;
6836 typename Powerpc_relocate_functions
<size
, big_endian
>::Status status
6837 = Powerpc_relocate_functions
<size
, big_endian
>::STATUS_OK
;
6840 case elfcpp::R_POWERPC_NONE
:
6841 case elfcpp::R_POWERPC_TLS
:
6842 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
6843 case elfcpp::R_POWERPC_GNU_VTENTRY
:
6844 case elfcpp::R_PPC_EMB_MRKREF
:
6847 case elfcpp::R_PPC64_ADDR64
:
6848 case elfcpp::R_PPC64_REL64
:
6849 case elfcpp::R_PPC64_TOC
:
6850 Reloc::addr64(view
, value
);
6853 case elfcpp::R_POWERPC_TPREL
:
6854 case elfcpp::R_POWERPC_DTPREL
:
6856 Reloc::addr64(view
, value
);
6858 status
= Reloc::addr32(view
, value
, overflow
);
6861 case elfcpp::R_PPC64_UADDR64
:
6862 Reloc::addr64_u(view
, value
);
6865 case elfcpp::R_POWERPC_ADDR32
:
6866 status
= Reloc::addr32(view
, value
, overflow
);
6869 case elfcpp::R_POWERPC_REL32
:
6870 case elfcpp::R_POWERPC_UADDR32
:
6871 status
= Reloc::addr32_u(view
, value
, overflow
);
6874 case elfcpp::R_POWERPC_ADDR24
:
6875 case elfcpp::R_POWERPC_REL24
:
6876 case elfcpp::R_PPC_PLTREL24
:
6877 case elfcpp::R_PPC_LOCAL24PC
:
6878 status
= Reloc::addr24(view
, value
, overflow
);
6881 case elfcpp::R_POWERPC_GOT_DTPREL16
:
6882 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
6885 status
= Reloc::addr16_ds(view
, value
, overflow
);
6888 case elfcpp::R_POWERPC_ADDR16
:
6889 case elfcpp::R_POWERPC_REL16
:
6890 case elfcpp::R_PPC64_TOC16
:
6891 case elfcpp::R_POWERPC_GOT16
:
6892 case elfcpp::R_POWERPC_SECTOFF
:
6893 case elfcpp::R_POWERPC_TPREL16
:
6894 case elfcpp::R_POWERPC_DTPREL16
:
6895 case elfcpp::R_POWERPC_GOT_TLSGD16
:
6896 case elfcpp::R_POWERPC_GOT_TLSLD16
:
6897 case elfcpp::R_POWERPC_GOT_TPREL16
:
6898 case elfcpp::R_POWERPC_ADDR16_LO
:
6899 case elfcpp::R_POWERPC_REL16_LO
:
6900 case elfcpp::R_PPC64_TOC16_LO
:
6901 case elfcpp::R_POWERPC_GOT16_LO
:
6902 case elfcpp::R_POWERPC_SECTOFF_LO
:
6903 case elfcpp::R_POWERPC_TPREL16_LO
:
6904 case elfcpp::R_POWERPC_DTPREL16_LO
:
6905 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
6906 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
6907 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
6908 status
= Reloc::addr16(view
, value
, overflow
);
6911 case elfcpp::R_POWERPC_UADDR16
:
6912 status
= Reloc::addr16_u(view
, value
, overflow
);
6915 case elfcpp::R_POWERPC_ADDR16_HI
:
6916 case elfcpp::R_POWERPC_REL16_HI
:
6917 case elfcpp::R_PPC64_TOC16_HI
:
6918 case elfcpp::R_POWERPC_GOT16_HI
:
6919 case elfcpp::R_POWERPC_SECTOFF_HI
:
6920 case elfcpp::R_POWERPC_TPREL16_HI
:
6921 case elfcpp::R_POWERPC_DTPREL16_HI
:
6922 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
6923 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
6924 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
6925 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
6926 Reloc::addr16_hi(view
, value
);
6929 case elfcpp::R_POWERPC_ADDR16_HA
:
6930 case elfcpp::R_POWERPC_REL16_HA
:
6931 case elfcpp::R_PPC64_TOC16_HA
:
6932 case elfcpp::R_POWERPC_GOT16_HA
:
6933 case elfcpp::R_POWERPC_SECTOFF_HA
:
6934 case elfcpp::R_POWERPC_TPREL16_HA
:
6935 case elfcpp::R_POWERPC_DTPREL16_HA
:
6936 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
6937 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
6938 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
6939 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
6940 Reloc::addr16_ha(view
, value
);
6943 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
6945 // R_PPC_EMB_NADDR16_LO
6947 case elfcpp::R_PPC64_ADDR16_HIGHER
:
6948 case elfcpp::R_PPC64_TPREL16_HIGHER
:
6949 Reloc::addr16_hi2(view
, value
);
6952 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
6954 // R_PPC_EMB_NADDR16_HI
6956 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
6957 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
6958 Reloc::addr16_ha2(view
, value
);
6961 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
6963 // R_PPC_EMB_NADDR16_HA
6965 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
6966 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
6967 Reloc::addr16_hi3(view
, value
);
6970 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
6974 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
6975 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
6976 Reloc::addr16_ha3(view
, value
);
6979 case elfcpp::R_PPC64_DTPREL16_DS
:
6980 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
6982 // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16
6984 case elfcpp::R_PPC64_TPREL16_DS
:
6985 case elfcpp::R_PPC64_TPREL16_LO_DS
:
6987 // R_PPC_TLSGD, R_PPC_TLSLD
6989 case elfcpp::R_PPC64_ADDR16_DS
:
6990 case elfcpp::R_PPC64_ADDR16_LO_DS
:
6991 case elfcpp::R_PPC64_TOC16_DS
:
6992 case elfcpp::R_PPC64_TOC16_LO_DS
:
6993 case elfcpp::R_PPC64_GOT16_DS
:
6994 case elfcpp::R_PPC64_GOT16_LO_DS
:
6995 case elfcpp::R_PPC64_SECTOFF_DS
:
6996 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
6997 status
= Reloc::addr16_ds(view
, value
, overflow
);
7000 case elfcpp::R_POWERPC_ADDR14
:
7001 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
7002 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
7003 case elfcpp::R_POWERPC_REL14
:
7004 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
7005 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
7006 status
= Reloc::addr14(view
, value
, overflow
);
7009 case elfcpp::R_POWERPC_COPY
:
7010 case elfcpp::R_POWERPC_GLOB_DAT
:
7011 case elfcpp::R_POWERPC_JMP_SLOT
:
7012 case elfcpp::R_POWERPC_RELATIVE
:
7013 case elfcpp::R_POWERPC_DTPMOD
:
7014 case elfcpp::R_PPC64_JMP_IREL
:
7015 case elfcpp::R_POWERPC_IRELATIVE
:
7016 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
7017 _("unexpected reloc %u in object file"),
7021 case elfcpp::R_PPC_EMB_SDA21
:
7026 // R_PPC64_TOCSAVE. For the time being this can be ignored.
7030 case elfcpp::R_PPC_EMB_SDA2I16
:
7031 case elfcpp::R_PPC_EMB_SDA2REL
:
7034 // R_PPC64_TLSGD, R_PPC64_TLSLD
7037 case elfcpp::R_POWERPC_PLT32
:
7038 case elfcpp::R_POWERPC_PLTREL32
:
7039 case elfcpp::R_POWERPC_PLT16_LO
:
7040 case elfcpp::R_POWERPC_PLT16_HI
:
7041 case elfcpp::R_POWERPC_PLT16_HA
:
7042 case elfcpp::R_PPC_SDAREL16
:
7043 case elfcpp::R_POWERPC_ADDR30
:
7044 case elfcpp::R_PPC64_PLT64
:
7045 case elfcpp::R_PPC64_PLTREL64
:
7046 case elfcpp::R_PPC64_PLTGOT16
:
7047 case elfcpp::R_PPC64_PLTGOT16_LO
:
7048 case elfcpp::R_PPC64_PLTGOT16_HI
:
7049 case elfcpp::R_PPC64_PLTGOT16_HA
:
7050 case elfcpp::R_PPC64_PLT16_LO_DS
:
7051 case elfcpp::R_PPC64_PLTGOT16_DS
:
7052 case elfcpp::R_PPC64_PLTGOT16_LO_DS
:
7053 case elfcpp::R_PPC_EMB_RELSEC16
:
7054 case elfcpp::R_PPC_EMB_RELST_LO
:
7055 case elfcpp::R_PPC_EMB_RELST_HI
:
7056 case elfcpp::R_PPC_EMB_RELST_HA
:
7057 case elfcpp::R_PPC_EMB_BIT_FLD
:
7058 case elfcpp::R_PPC_EMB_RELSDA
:
7059 case elfcpp::R_PPC_TOC16
:
7062 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
7063 _("unsupported reloc %u"),
7067 if (status
!= Powerpc_relocate_functions
<size
, big_endian
>::STATUS_OK
)
7068 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
7069 _("relocation overflow"));
7074 // Relocate section data.
7076 template<int size
, bool big_endian
>
7078 Target_powerpc
<size
, big_endian
>::relocate_section(
7079 const Relocate_info
<size
, big_endian
>* relinfo
,
7080 unsigned int sh_type
,
7081 const unsigned char* prelocs
,
7083 Output_section
* output_section
,
7084 bool needs_special_offset_handling
,
7085 unsigned char* view
,
7087 section_size_type view_size
,
7088 const Reloc_symbol_changes
* reloc_symbol_changes
)
7090 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
7091 typedef typename Target_powerpc
<size
, big_endian
>::Relocate Powerpc_relocate
;
7092 typedef typename Target_powerpc
<size
, big_endian
>::Relocate_comdat_behavior
7093 Powerpc_comdat_behavior
;
7095 gold_assert(sh_type
== elfcpp::SHT_RELA
);
7097 gold::relocate_section
<size
, big_endian
, Powerpc
, elfcpp::SHT_RELA
,
7098 Powerpc_relocate
, Powerpc_comdat_behavior
>(
7104 needs_special_offset_handling
,
7108 reloc_symbol_changes
);
7111 class Powerpc_scan_relocatable_reloc
7114 // Return the strategy to use for a local symbol which is not a
7115 // section symbol, given the relocation type.
7116 inline Relocatable_relocs::Reloc_strategy
7117 local_non_section_strategy(unsigned int r_type
, Relobj
*, unsigned int r_sym
)
7119 if (r_type
== 0 && r_sym
== 0)
7120 return Relocatable_relocs::RELOC_DISCARD
;
7121 return Relocatable_relocs::RELOC_COPY
;
7124 // Return the strategy to use for a local symbol which is a section
7125 // symbol, given the relocation type.
7126 inline Relocatable_relocs::Reloc_strategy
7127 local_section_strategy(unsigned int, Relobj
*)
7129 return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
;
7132 // Return the strategy to use for a global symbol, given the
7133 // relocation type, the object, and the symbol index.
7134 inline Relocatable_relocs::Reloc_strategy
7135 global_strategy(unsigned int r_type
, Relobj
*, unsigned int)
7137 if (r_type
== elfcpp::R_PPC_PLTREL24
)
7138 return Relocatable_relocs::RELOC_SPECIAL
;
7139 return Relocatable_relocs::RELOC_COPY
;
7143 // Scan the relocs during a relocatable link.
7145 template<int size
, bool big_endian
>
7147 Target_powerpc
<size
, big_endian
>::scan_relocatable_relocs(
7148 Symbol_table
* symtab
,
7150 Sized_relobj_file
<size
, big_endian
>* object
,
7151 unsigned int data_shndx
,
7152 unsigned int sh_type
,
7153 const unsigned char* prelocs
,
7155 Output_section
* output_section
,
7156 bool needs_special_offset_handling
,
7157 size_t local_symbol_count
,
7158 const unsigned char* plocal_symbols
,
7159 Relocatable_relocs
* rr
)
7161 gold_assert(sh_type
== elfcpp::SHT_RELA
);
7163 gold::scan_relocatable_relocs
<size
, big_endian
, elfcpp::SHT_RELA
,
7164 Powerpc_scan_relocatable_reloc
>(
7172 needs_special_offset_handling
,
7178 // Emit relocations for a section.
7179 // This is a modified version of the function by the same name in
7180 // target-reloc.h. Using relocate_special_relocatable for
7181 // R_PPC_PLTREL24 would require duplication of the entire body of the
7182 // loop, so we may as well duplicate the whole thing.
7184 template<int size
, bool big_endian
>
7186 Target_powerpc
<size
, big_endian
>::relocate_relocs(
7187 const Relocate_info
<size
, big_endian
>* relinfo
,
7188 unsigned int sh_type
,
7189 const unsigned char* prelocs
,
7191 Output_section
* output_section
,
7192 typename
elfcpp::Elf_types
<size
>::Elf_Off offset_in_output_section
,
7193 const Relocatable_relocs
* rr
,
7195 Address view_address
,
7197 unsigned char* reloc_view
,
7198 section_size_type reloc_view_size
)
7200 gold_assert(sh_type
== elfcpp::SHT_RELA
);
7202 typedef typename Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::Reloc
7204 typedef typename Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::Reloc_write
7206 const int reloc_size
7207 = Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
7209 Powerpc_relobj
<size
, big_endian
>* const object
7210 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(relinfo
->object
);
7211 const unsigned int local_count
= object
->local_symbol_count();
7212 unsigned int got2_shndx
= object
->got2_shndx();
7213 Address got2_addend
= 0;
7214 if (got2_shndx
!= 0)
7216 got2_addend
= object
->get_output_section_offset(got2_shndx
);
7217 gold_assert(got2_addend
!= invalid_address
);
7220 unsigned char* pwrite
= reloc_view
;
7221 bool zap_next
= false;
7222 for (size_t i
= 0; i
< reloc_count
; ++i
, prelocs
+= reloc_size
)
7224 Relocatable_relocs::Reloc_strategy strategy
= rr
->strategy(i
);
7225 if (strategy
== Relocatable_relocs::RELOC_DISCARD
)
7228 Reltype
reloc(prelocs
);
7229 Reltype_write
reloc_write(pwrite
);
7231 Address offset
= reloc
.get_r_offset();
7232 typename
elfcpp::Elf_types
<size
>::Elf_WXword r_info
= reloc
.get_r_info();
7233 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(r_info
);
7234 unsigned int r_type
= elfcpp::elf_r_type
<size
>(r_info
);
7235 const unsigned int orig_r_sym
= r_sym
;
7236 typename
elfcpp::Elf_types
<size
>::Elf_Swxword addend
7237 = reloc
.get_r_addend();
7238 const Symbol
* gsym
= NULL
;
7242 // We could arrange to discard these and other relocs for
7243 // tls optimised sequences in the strategy methods, but for
7244 // now do as BFD ld does.
7245 r_type
= elfcpp::R_POWERPC_NONE
;
7249 // Get the new symbol index.
7250 if (r_sym
< local_count
)
7254 case Relocatable_relocs::RELOC_COPY
:
7255 case Relocatable_relocs::RELOC_SPECIAL
:
7258 r_sym
= object
->symtab_index(r_sym
);
7259 gold_assert(r_sym
!= -1U);
7263 case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
:
7265 // We are adjusting a section symbol. We need to find
7266 // the symbol table index of the section symbol for
7267 // the output section corresponding to input section
7268 // in which this symbol is defined.
7269 gold_assert(r_sym
< local_count
);
7271 unsigned int shndx
=
7272 object
->local_symbol_input_shndx(r_sym
, &is_ordinary
);
7273 gold_assert(is_ordinary
);
7274 Output_section
* os
= object
->output_section(shndx
);
7275 gold_assert(os
!= NULL
);
7276 gold_assert(os
->needs_symtab_index());
7277 r_sym
= os
->symtab_index();
7287 gsym
= object
->global_symbol(r_sym
);
7288 gold_assert(gsym
!= NULL
);
7289 if (gsym
->is_forwarder())
7290 gsym
= relinfo
->symtab
->resolve_forwards(gsym
);
7292 gold_assert(gsym
->has_symtab_index());
7293 r_sym
= gsym
->symtab_index();
7296 // Get the new offset--the location in the output section where
7297 // this relocation should be applied.
7298 if (static_cast<Address
>(offset_in_output_section
) != invalid_address
)
7299 offset
+= offset_in_output_section
;
7302 section_offset_type sot_offset
=
7303 convert_types
<section_offset_type
, Address
>(offset
);
7304 section_offset_type new_sot_offset
=
7305 output_section
->output_offset(object
, relinfo
->data_shndx
,
7307 gold_assert(new_sot_offset
!= -1);
7308 offset
= new_sot_offset
;
7311 // In an object file, r_offset is an offset within the section.
7312 // In an executable or dynamic object, generated by
7313 // --emit-relocs, r_offset is an absolute address.
7314 if (!parameters
->options().relocatable())
7316 offset
+= view_address
;
7317 if (static_cast<Address
>(offset_in_output_section
) != invalid_address
)
7318 offset
-= offset_in_output_section
;
7321 // Handle the reloc addend based on the strategy.
7322 if (strategy
== Relocatable_relocs::RELOC_COPY
)
7324 else if (strategy
== Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
)
7326 const Symbol_value
<size
>* psymval
= object
->local_symbol(orig_r_sym
);
7327 addend
= psymval
->value(object
, addend
);
7329 else if (strategy
== Relocatable_relocs::RELOC_SPECIAL
)
7331 if (addend
>= 32768)
7332 addend
+= got2_addend
;
7337 if (!parameters
->options().relocatable())
7339 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
7340 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
7341 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HI
7342 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HA
)
7344 // First instruction of a global dynamic sequence,
7346 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
7347 switch (this->optimize_tls_gd(final
))
7349 case tls::TLSOPT_TO_IE
:
7350 r_type
+= (elfcpp::R_POWERPC_GOT_TPREL16
7351 - elfcpp::R_POWERPC_GOT_TLSGD16
);
7353 case tls::TLSOPT_TO_LE
:
7354 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
7355 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
7356 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
7359 r_type
= elfcpp::R_POWERPC_NONE
;
7360 offset
-= 2 * big_endian
;
7367 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
7368 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
7369 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HI
7370 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HA
)
7372 // First instruction of a local dynamic sequence,
7374 if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE
)
7376 if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
7377 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
)
7379 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
7380 const Output_section
* os
= relinfo
->layout
->tls_segment()
7382 gold_assert(os
!= NULL
);
7383 gold_assert(os
->needs_symtab_index());
7384 r_sym
= os
->symtab_index();
7385 addend
= dtp_offset
;
7389 r_type
= elfcpp::R_POWERPC_NONE
;
7390 offset
-= 2 * big_endian
;
7394 else if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
7395 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
7396 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HI
7397 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HA
)
7399 // First instruction of initial exec sequence.
7400 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
7401 if (this->optimize_tls_ie(final
) == tls::TLSOPT_TO_LE
)
7403 if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
7404 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
)
7405 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
7408 r_type
= elfcpp::R_POWERPC_NONE
;
7409 offset
-= 2 * big_endian
;
7413 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
7414 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
7416 // Second instruction of a global dynamic sequence,
7417 // the __tls_get_addr call
7418 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
7419 switch (this->optimize_tls_gd(final
))
7421 case tls::TLSOPT_TO_IE
:
7422 r_type
= elfcpp::R_POWERPC_NONE
;
7425 case tls::TLSOPT_TO_LE
:
7426 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
7427 offset
+= 2 * big_endian
;
7434 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
7435 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
7437 // Second instruction of a local dynamic sequence,
7438 // the __tls_get_addr call
7439 if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE
)
7441 const Output_section
* os
= relinfo
->layout
->tls_segment()
7443 gold_assert(os
!= NULL
);
7444 gold_assert(os
->needs_symtab_index());
7445 r_sym
= os
->symtab_index();
7446 addend
= dtp_offset
;
7447 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
7448 offset
+= 2 * big_endian
;
7452 else if (r_type
== elfcpp::R_POWERPC_TLS
)
7454 // Second instruction of an initial exec sequence
7455 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
7456 if (this->optimize_tls_ie(final
) == tls::TLSOPT_TO_LE
)
7458 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
7459 offset
+= 2 * big_endian
;
7464 reloc_write
.put_r_offset(offset
);
7465 reloc_write
.put_r_info(elfcpp::elf_r_info
<size
>(r_sym
, r_type
));
7466 reloc_write
.put_r_addend(addend
);
7468 pwrite
+= reloc_size
;
7471 gold_assert(static_cast<section_size_type
>(pwrite
- reloc_view
)
7472 == reloc_view_size
);
7475 // Return the value to use for a dynamic symbol which requires special
7476 // treatment. This is how we support equality comparisons of function
7477 // pointers across shared library boundaries, as described in the
7478 // processor specific ABI supplement.
7480 template<int size
, bool big_endian
>
7482 Target_powerpc
<size
, big_endian
>::do_dynsym_value(const Symbol
* gsym
) const
7486 gold_assert(gsym
->is_from_dynobj() && gsym
->has_plt_offset());
7487 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
7488 p
!= this->stub_tables_
.end();
7491 Address off
= (*p
)->find_plt_call_entry(gsym
);
7492 if (off
!= invalid_address
)
7493 return (*p
)->stub_address() + off
;
7499 // Return the PLT address to use for a local symbol.
7500 template<int size
, bool big_endian
>
7502 Target_powerpc
<size
, big_endian
>::do_plt_address_for_local(
7503 const Relobj
* object
,
7504 unsigned int symndx
) const
7508 const Sized_relobj
<size
, big_endian
>* relobj
7509 = static_cast<const Sized_relobj
<size
, big_endian
>*>(object
);
7510 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
7511 p
!= this->stub_tables_
.end();
7514 Address off
= (*p
)->find_plt_call_entry(relobj
->sized_relobj(),
7516 if (off
!= invalid_address
)
7517 return (*p
)->stub_address() + off
;
7523 // Return the PLT address to use for a global symbol.
7524 template<int size
, bool big_endian
>
7526 Target_powerpc
<size
, big_endian
>::do_plt_address_for_global(
7527 const Symbol
* gsym
) const
7531 for (typename
Stub_tables::const_iterator p
= this->stub_tables_
.begin();
7532 p
!= this->stub_tables_
.end();
7535 Address off
= (*p
)->find_plt_call_entry(gsym
);
7536 if (off
!= invalid_address
)
7537 return (*p
)->stub_address() + off
;
7543 // Return the offset to use for the GOT_INDX'th got entry which is
7544 // for a local tls symbol specified by OBJECT, SYMNDX.
7545 template<int size
, bool big_endian
>
7547 Target_powerpc
<size
, big_endian
>::do_tls_offset_for_local(
7548 const Relobj
* object
,
7549 unsigned int symndx
,
7550 unsigned int got_indx
) const
7552 const Powerpc_relobj
<size
, big_endian
>* ppc_object
7553 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>(object
);
7554 if (ppc_object
->local_symbol(symndx
)->is_tls_symbol())
7556 for (Got_type got_type
= GOT_TYPE_TLSGD
;
7557 got_type
<= GOT_TYPE_TPREL
;
7558 got_type
= Got_type(got_type
+ 1))
7559 if (ppc_object
->local_has_got_offset(symndx
, got_type
))
7561 unsigned int off
= ppc_object
->local_got_offset(symndx
, got_type
);
7562 if (got_type
== GOT_TYPE_TLSGD
)
7564 if (off
== got_indx
* (size
/ 8))
7566 if (got_type
== GOT_TYPE_TPREL
)
7576 // Return the offset to use for the GOT_INDX'th got entry which is
7577 // for global tls symbol GSYM.
7578 template<int size
, bool big_endian
>
7580 Target_powerpc
<size
, big_endian
>::do_tls_offset_for_global(
7582 unsigned int got_indx
) const
7584 if (gsym
->type() == elfcpp::STT_TLS
)
7586 for (Got_type got_type
= GOT_TYPE_TLSGD
;
7587 got_type
<= GOT_TYPE_TPREL
;
7588 got_type
= Got_type(got_type
+ 1))
7589 if (gsym
->has_got_offset(got_type
))
7591 unsigned int off
= gsym
->got_offset(got_type
);
7592 if (got_type
== GOT_TYPE_TLSGD
)
7594 if (off
== got_indx
* (size
/ 8))
7596 if (got_type
== GOT_TYPE_TPREL
)
7606 // The selector for powerpc object files.
7608 template<int size
, bool big_endian
>
7609 class Target_selector_powerpc
: public Target_selector
7612 Target_selector_powerpc()
7613 : Target_selector(size
== 64 ? elfcpp::EM_PPC64
: elfcpp::EM_PPC
,
7616 ? (big_endian
? "elf64-powerpc" : "elf64-powerpcle")
7617 : (big_endian
? "elf32-powerpc" : "elf32-powerpcle")),
7619 ? (big_endian
? "elf64ppc" : "elf64lppc")
7620 : (big_endian
? "elf32ppc" : "elf32lppc")))
7624 do_instantiate_target()
7625 { return new Target_powerpc
<size
, big_endian
>(); }
7628 Target_selector_powerpc
<32, true> target_selector_ppc32
;
7629 Target_selector_powerpc
<32, false> target_selector_ppc32le
;
7630 Target_selector_powerpc
<64, true> target_selector_ppc64
;
7631 Target_selector_powerpc
<64, false> target_selector_ppc64le
;
7633 // Instantiate these constants for -O0
7634 template<int size
, bool big_endian
>
7635 const int Output_data_glink
<size
, big_endian
>::pltresolve_size
;
7636 template<int size
, bool big_endian
>
7637 const typename Stub_table
<size
, big_endian
>::Address
7638 Stub_table
<size
, big_endian
>::invalid_address
;
7639 template<int size
, bool big_endian
>
7640 const typename Target_powerpc
<size
, big_endian
>::Address
7641 Target_powerpc
<size
, big_endian
>::invalid_address
;
7643 } // End anonymous namespace.