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.
27 #include "parameters.h"
34 #include "copy-relocs.h"
36 #include "target-reloc.h"
37 #include "target-select.h"
47 template<int size
, bool big_endian
>
48 class Output_data_plt_powerpc
;
50 template<int size
, bool big_endian
>
51 class Output_data_got_powerpc
;
53 template<int size
, bool big_endian
>
54 class Output_data_glink
;
56 template<int size
, bool big_endian
>
57 class Powerpc_relobj
: public Sized_relobj_file
<size
, big_endian
>
60 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
61 typedef typename
elfcpp::Elf_types
<size
>::Elf_Off Offset
;
63 Powerpc_relobj(const std::string
& name
, Input_file
* input_file
, off_t offset
,
64 const typename
elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
65 : Sized_relobj_file
<size
, big_endian
>(name
, input_file
, offset
, ehdr
),
66 special_(0), opd_ent_shndx_(), opd_ent_off_()
72 // The .got2 section shndx.
77 return this->special_
;
82 // The .opd section shndx.
89 return this->special_
;
92 // Init OPD entry arrays.
94 init_opd(size_t opd_size
)
96 size_t count
= this->opd_ent_ndx(opd_size
);
97 this->opd_ent_shndx_
.resize(count
);
98 this->opd_ent_off_
.reserve(count
);
101 // Return section and offset of function entry for .opd + R_OFF.
103 get_opd_ent(Address r_off
, unsigned int* shndx
, Address
* value
)
105 size_t ndx
= this->opd_ent_ndx(r_off
);
106 gold_assert(ndx
< this->opd_ent_shndx_
.size());
107 gold_assert(this->opd_ent_shndx_
[ndx
] != 0);
108 *shndx
= this->opd_ent_shndx_
[ndx
];
109 *value
= this->opd_ent_off_
[ndx
];
112 // Set section and offset of function entry for .opd + R_OFF.
114 set_opd_ent(Address r_off
, unsigned int shndx
, Address value
)
116 size_t ndx
= this->opd_ent_ndx(r_off
);
117 gold_assert(ndx
< this->opd_ent_shndx_
.size());
118 this->opd_ent_shndx_
[ndx
] = shndx
;
119 this->opd_ent_off_
[ndx
] = value
;
122 // Examine .rela.opd to build info about function entry points.
124 scan_opd_relocs(size_t reloc_count
,
125 const unsigned char* prelocs
,
126 const unsigned char* plocal_syms
);
129 do_read_relocs(Read_relocs_data
*);
132 do_find_special_sections(Read_symbols_data
* sd
);
134 // Return offset in output GOT section that this object will use
135 // as a TOC pointer. Won't be just a constant with multi-toc support.
137 toc_base_offset() const
141 // Return index into opd_ent_shndx or opd_ent_off array for .opd entry
142 // at OFF. .opd entries are 24 bytes long, but they can be spaced
143 // 16 bytes apart when the language doesn't use the last 8-byte
144 // word, the environment pointer. Thus dividing the entry section
145 // offset by 16 will give an index into opd_ent_shndx_ and
146 // opd_ent_off_ that works for either layout of .opd. (It leaves
147 // some elements of the vectors unused when .opd entries are spaced
148 // 24 bytes apart, but we don't know the spacing until relocations
149 // are processed, and in any case it is possible for an object to
150 // have some entries spaced 16 bytes apart and others 24 bytes apart.)
152 opd_ent_ndx(size_t off
) const
155 // For 32-bit the .got2 section shdnx, for 64-bit the .opd section shndx.
156 unsigned int special_
;
157 // The first 8-byte word of an OPD entry gives the address of the
158 // entry point of the function. Relocatable object files have a
159 // relocation on this word. The following two vectors record the
160 // section and offset specified by these relocations.
161 std::vector
<unsigned int> opd_ent_shndx_
;
162 std::vector
<Offset
> opd_ent_off_
;
165 template<int size
, bool big_endian
>
166 class Target_powerpc
: public Sized_target
<size
, big_endian
>
170 Output_data_reloc
<elfcpp::SHT_RELA
, true, size
, big_endian
> Reloc_section
;
171 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
172 typedef typename
elfcpp::Elf_types
<size
>::Elf_Swxword Signed_address
;
173 static const Address invalid_address
= static_cast<Address
>(0) - 1;
174 // Offset of tp and dtp pointers from start of TLS block.
175 static const Address tp_offset
= 0x7000;
176 static const Address dtp_offset
= 0x8000;
179 : Sized_target
<size
, big_endian
>(&powerpc_info
),
180 got_(NULL
), plt_(NULL
), glink_(NULL
), rela_dyn_(NULL
),
181 copy_relocs_(elfcpp::R_POWERPC_COPY
),
182 dynbss_(NULL
), tlsld_got_offset_(-1U)
186 // Process the relocations to determine unreferenced sections for
187 // garbage collection.
189 gc_process_relocs(Symbol_table
* symtab
,
191 Sized_relobj_file
<size
, big_endian
>* object
,
192 unsigned int data_shndx
,
193 unsigned int sh_type
,
194 const unsigned char* prelocs
,
196 Output_section
* output_section
,
197 bool needs_special_offset_handling
,
198 size_t local_symbol_count
,
199 const unsigned char* plocal_symbols
);
201 // Scan the relocations to look for symbol adjustments.
203 scan_relocs(Symbol_table
* symtab
,
205 Sized_relobj_file
<size
, big_endian
>* object
,
206 unsigned int data_shndx
,
207 unsigned int sh_type
,
208 const unsigned char* prelocs
,
210 Output_section
* output_section
,
211 bool needs_special_offset_handling
,
212 size_t local_symbol_count
,
213 const unsigned char* plocal_symbols
);
215 // Map input .toc section to output .got section.
217 do_output_section_name(const Relobj
*, const char* name
, size_t* plen
) const
219 if (size
== 64 && strcmp(name
, ".toc") == 0)
227 // Finalize the sections.
229 do_finalize_sections(Layout
*, const Input_objects
*, Symbol_table
*);
231 // Return the value to use for a dynamic which requires special
234 do_dynsym_value(const Symbol
*) const;
236 // Relocate a section.
238 relocate_section(const Relocate_info
<size
, big_endian
>*,
239 unsigned int sh_type
,
240 const unsigned char* prelocs
,
242 Output_section
* output_section
,
243 bool needs_special_offset_handling
,
245 Address view_address
,
246 section_size_type view_size
,
247 const Reloc_symbol_changes
*);
249 // Scan the relocs during a relocatable link.
251 scan_relocatable_relocs(Symbol_table
* symtab
,
253 Sized_relobj_file
<size
, big_endian
>* object
,
254 unsigned int data_shndx
,
255 unsigned int sh_type
,
256 const unsigned char* prelocs
,
258 Output_section
* output_section
,
259 bool needs_special_offset_handling
,
260 size_t local_symbol_count
,
261 const unsigned char* plocal_symbols
,
262 Relocatable_relocs
*);
264 // Relocate a section during a relocatable link.
266 relocate_for_relocatable(const Relocate_info
<size
, big_endian
>*,
267 unsigned int sh_type
,
268 const unsigned char* prelocs
,
270 Output_section
* output_section
,
271 off_t offset_in_output_section
,
272 const Relocatable_relocs
*,
274 Address view_address
,
276 unsigned char* reloc_view
,
277 section_size_type reloc_view_size
);
279 // Return whether SYM is defined by the ABI.
281 do_is_defined_by_abi(const Symbol
* sym
) const
283 return strcmp(sym
->name(), "__tls_get_addr") == 0;
286 // Return the size of the GOT section.
290 gold_assert(this->got_
!= NULL
);
291 return this->got_
->data_size();
294 // Get the PLT section.
295 const Output_data_plt_powerpc
<size
, big_endian
>*
298 gold_assert(this->plt_
!= NULL
);
302 // Get the .glink section.
303 const Output_data_glink
<size
, big_endian
>*
304 glink_section() const
306 gold_assert(this->glink_
!= NULL
);
310 // Get the GOT section.
311 const Output_data_got_powerpc
<size
, big_endian
>*
314 gold_assert(this->got_
!= NULL
);
319 do_make_elf_object(const std::string
&, Input_file
*, off_t
,
320 const elfcpp::Ehdr
<size
, big_endian
>&);
322 // Return the number of entries in the GOT.
324 got_entry_count() const
326 if (this->got_
== NULL
)
328 return this->got_size() / (size
/ 8);
331 // Return the number of entries in the PLT.
333 plt_entry_count() const;
335 // Return the offset of the first non-reserved PLT entry.
337 first_plt_entry_offset() const;
339 // Return the size of each PLT entry.
341 plt_entry_size() const;
345 // The class which scans relocations.
350 : issued_non_pic_error_(false)
354 get_reference_flags(unsigned int r_type
);
357 local(Symbol_table
* symtab
, Layout
* layout
, Target_powerpc
* target
,
358 Sized_relobj_file
<size
, big_endian
>* object
,
359 unsigned int data_shndx
,
360 Output_section
* output_section
,
361 const elfcpp::Rela
<size
, big_endian
>& reloc
, unsigned int r_type
,
362 const elfcpp::Sym
<size
, big_endian
>& lsym
);
365 global(Symbol_table
* symtab
, Layout
* layout
, Target_powerpc
* target
,
366 Sized_relobj_file
<size
, big_endian
>* object
,
367 unsigned int data_shndx
,
368 Output_section
* output_section
,
369 const elfcpp::Rela
<size
, big_endian
>& reloc
, unsigned int r_type
,
373 local_reloc_may_be_function_pointer(Symbol_table
* , Layout
* ,
375 Sized_relobj_file
<size
, big_endian
>* ,
378 const elfcpp::Rela
<size
, big_endian
>& ,
380 const elfcpp::Sym
<size
, big_endian
>&)
384 global_reloc_may_be_function_pointer(Symbol_table
* , Layout
* ,
386 Sized_relobj_file
<size
, big_endian
>* ,
389 const elfcpp::Rela
<size
,
391 unsigned int , Symbol
*)
396 unsupported_reloc_local(Sized_relobj_file
<size
, big_endian
>*,
397 unsigned int r_type
);
400 unsupported_reloc_global(Sized_relobj_file
<size
, big_endian
>*,
401 unsigned int r_type
, Symbol
*);
404 generate_tls_call(Symbol_table
* symtab
, Layout
* layout
,
405 Target_powerpc
* target
);
408 check_non_pic(Relobj
*, unsigned int r_type
);
410 // Whether we have issued an error about a non-PIC compilation.
411 bool issued_non_pic_error_
;
414 // The class which implements relocation.
418 // Use 'at' branch hints when true, 'y' when false.
419 // FIXME maybe: set this with an option.
420 static const bool is_isa_v2
= true;
424 CALL_NOT_EXPECTED
= 0,
430 : call_tls_get_addr_(CALL_NOT_EXPECTED
)
435 if (this->call_tls_get_addr_
!= CALL_NOT_EXPECTED
)
437 // FIXME: This needs to specify the location somehow.
438 gold_error(_("missing expected __tls_get_addr call"));
442 // Do a relocation. Return false if the caller should not issue
443 // any warnings about this relocation.
445 relocate(const Relocate_info
<size
, big_endian
>*, Target_powerpc
*,
446 Output_section
*, size_t relnum
,
447 const elfcpp::Rela
<size
, big_endian
>&,
448 unsigned int r_type
, const Sized_symbol
<size
>*,
449 const Symbol_value
<size
>*,
451 typename
elfcpp::Elf_types
<size
>::Elf_Addr
,
454 // This is set if we should skip the next reloc, which should be a
455 // call to __tls_get_addr.
456 enum skip_tls call_tls_get_addr_
;
459 // A class which returns the size required for a relocation type,
460 // used while scanning relocs during a relocatable link.
461 class Relocatable_size_for_reloc
465 get_size_for_reloc(unsigned int, Relobj
*)
472 // Optimize the TLS relocation type based on what we know about the
473 // symbol. IS_FINAL is true if the final address of this symbol is
474 // known at link time.
476 tls::Tls_optimization
477 optimize_tls_gd(bool is_final
)
479 // If we are generating a shared library, then we can't do anything
481 if (parameters
->options().shared())
482 return tls::TLSOPT_NONE
;
485 return tls::TLSOPT_TO_IE
;
486 return tls::TLSOPT_TO_LE
;
489 tls::Tls_optimization
492 if (parameters
->options().shared())
493 return tls::TLSOPT_NONE
;
495 return tls::TLSOPT_TO_LE
;
498 tls::Tls_optimization
499 optimize_tls_ie(bool is_final
)
501 if (!is_final
|| parameters
->options().shared())
502 return tls::TLSOPT_NONE
;
504 return tls::TLSOPT_TO_LE
;
507 // Get the GOT section, creating it if necessary.
508 Output_data_got_powerpc
<size
, big_endian
>*
509 got_section(Symbol_table
*, Layout
*);
513 make_glink_section(Layout
*);
515 // Create the PLT section.
517 make_plt_section(Layout
*);
519 // Create a PLT entry for a global symbol.
521 make_plt_entry(Layout
*, Symbol
*,
522 const elfcpp::Rela
<size
, big_endian
>&,
523 const Sized_relobj
<size
, big_endian
>* object
);
525 // Create a GOT entry for local dynamic __tls_get_addr.
527 tlsld_got_offset(Symbol_table
* symtab
, Layout
* layout
,
528 Sized_relobj_file
<size
, big_endian
>* object
);
531 tlsld_got_offset() const
533 return this->tlsld_got_offset_
;
536 // Get the dynamic reloc section, creating it if necessary.
538 rela_dyn_section(Layout
*);
540 // Copy a relocation against a global symbol.
542 copy_reloc(Symbol_table
* symtab
, Layout
* layout
,
543 Sized_relobj_file
<size
, big_endian
>* object
,
544 unsigned int shndx
, Output_section
* output_section
,
545 Symbol
* sym
, const elfcpp::Rela
<size
, big_endian
>& reloc
)
547 this->copy_relocs_
.copy_reloc(symtab
, layout
,
548 symtab
->get_sized_symbol
<size
>(sym
),
549 object
, shndx
, output_section
,
550 reloc
, this->rela_dyn_section(layout
));
553 // Information about this specific target which we pass to the
554 // general Target structure.
555 static Target::Target_info powerpc_info
;
557 // The types of GOT entries needed for this platform.
558 // These values are exposed to the ABI in an incremental link.
559 // Do not renumber existing values without changing the version
560 // number of the .gnu_incremental_inputs section.
564 GOT_TYPE_TLSGD
, // double entry for @got@tlsgd
565 GOT_TYPE_DTPREL
, // entry for @got@dtprel
566 GOT_TYPE_TPREL
// entry for @got@tprel
569 // The GOT output section.
570 Output_data_got_powerpc
<size
, big_endian
>* got_
;
571 // The PLT output section.
572 Output_data_plt_powerpc
<size
, big_endian
>* plt_
;
573 // The .glink output section.
574 Output_data_glink
<size
, big_endian
>* glink_
;
575 // The dynamic reloc output section.
576 Reloc_section
* rela_dyn_
;
577 // Relocs saved to avoid a COPY reloc.
578 Copy_relocs
<elfcpp::SHT_RELA
, size
, big_endian
> copy_relocs_
;
579 // Space for variables copied with a COPY reloc.
580 Output_data_space
* dynbss_
;
581 // Offset of the GOT entry for local dynamic __tls_get_addr calls.
582 unsigned int tlsld_got_offset_
;
586 Target::Target_info Target_powerpc
<32, true>::powerpc_info
=
589 true, // is_big_endian
590 elfcpp::EM_PPC
, // machine_code
591 false, // has_make_symbol
592 false, // has_resolve
593 false, // has_code_fill
594 true, // is_default_stack_executable
595 false, // can_icf_inline_merge_sections
597 "/usr/lib/ld.so.1", // dynamic_linker
598 0x10000000, // default_text_segment_address
599 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
600 4 * 1024, // common_pagesize (overridable by -z common-page-size)
601 false, // isolate_execinstr
603 elfcpp::SHN_UNDEF
, // small_common_shndx
604 elfcpp::SHN_UNDEF
, // large_common_shndx
605 0, // small_common_section_flags
606 0, // large_common_section_flags
607 NULL
, // attributes_section
608 NULL
// attributes_vendor
612 Target::Target_info Target_powerpc
<32, false>::powerpc_info
=
615 false, // is_big_endian
616 elfcpp::EM_PPC
, // machine_code
617 false, // has_make_symbol
618 false, // has_resolve
619 false, // has_code_fill
620 true, // is_default_stack_executable
621 false, // can_icf_inline_merge_sections
623 "/usr/lib/ld.so.1", // dynamic_linker
624 0x10000000, // default_text_segment_address
625 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
626 4 * 1024, // common_pagesize (overridable by -z common-page-size)
627 false, // isolate_execinstr
629 elfcpp::SHN_UNDEF
, // small_common_shndx
630 elfcpp::SHN_UNDEF
, // large_common_shndx
631 0, // small_common_section_flags
632 0, // large_common_section_flags
633 NULL
, // attributes_section
634 NULL
// attributes_vendor
638 Target::Target_info Target_powerpc
<64, true>::powerpc_info
=
641 true, // is_big_endian
642 elfcpp::EM_PPC64
, // machine_code
643 false, // has_make_symbol
644 false, // has_resolve
645 false, // has_code_fill
646 true, // is_default_stack_executable
647 false, // can_icf_inline_merge_sections
649 "/usr/lib/ld.so.1", // dynamic_linker
650 0x10000000, // default_text_segment_address
651 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
652 4 * 1024, // common_pagesize (overridable by -z common-page-size)
653 false, // isolate_execinstr
655 elfcpp::SHN_UNDEF
, // small_common_shndx
656 elfcpp::SHN_UNDEF
, // large_common_shndx
657 0, // small_common_section_flags
658 0, // large_common_section_flags
659 NULL
, // attributes_section
660 NULL
// attributes_vendor
664 Target::Target_info Target_powerpc
<64, false>::powerpc_info
=
667 false, // is_big_endian
668 elfcpp::EM_PPC64
, // machine_code
669 false, // has_make_symbol
670 false, // has_resolve
671 false, // has_code_fill
672 true, // is_default_stack_executable
673 false, // can_icf_inline_merge_sections
675 "/usr/lib/ld.so.1", // dynamic_linker
676 0x10000000, // default_text_segment_address
677 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
678 4 * 1024, // common_pagesize (overridable by -z common-page-size)
679 false, // isolate_execinstr
681 elfcpp::SHN_UNDEF
, // small_common_shndx
682 elfcpp::SHN_UNDEF
, // large_common_shndx
683 0, // small_common_section_flags
684 0, // large_common_section_flags
685 NULL
, // attributes_section
686 NULL
// attributes_vendor
690 is_branch_reloc(unsigned int r_type
)
692 return (r_type
== elfcpp::R_POWERPC_REL24
693 || r_type
== elfcpp::R_PPC_PLTREL24
694 || r_type
== elfcpp::R_PPC_LOCAL24PC
695 || r_type
== elfcpp::R_POWERPC_REL14
696 || r_type
== elfcpp::R_POWERPC_REL14_BRTAKEN
697 || r_type
== elfcpp::R_POWERPC_REL14_BRNTAKEN
698 || r_type
== elfcpp::R_POWERPC_ADDR24
699 || r_type
== elfcpp::R_POWERPC_ADDR14
700 || r_type
== elfcpp::R_POWERPC_ADDR14_BRTAKEN
701 || r_type
== elfcpp::R_POWERPC_ADDR14_BRNTAKEN
);
704 // If INSN is an opcode that may be used with an @tls operand, return
705 // the transformed insn for TLS optimisation, otherwise return 0. If
706 // REG is non-zero only match an insn with RB or RA equal to REG.
708 at_tls_transform(uint32_t insn
, unsigned int reg
)
710 if ((insn
& (0x3f << 26)) != 31 << 26)
714 if (reg
== 0 || ((insn
>> 11) & 0x1f) == reg
)
715 rtra
= insn
& ((1 << 26) - (1 << 16));
716 else if (((insn
>> 16) & 0x1f) == reg
)
717 rtra
= (insn
& (0x1f << 21)) | ((insn
& (0x1f << 11)) << 5);
721 if ((insn
& (0x3ff << 1)) == 266 << 1)
724 else if ((insn
& (0x1f << 1)) == 23 << 1
725 && ((insn
& (0x1f << 6)) < 14 << 6
726 || ((insn
& (0x1f << 6)) >= 16 << 6
727 && (insn
& (0x1f << 6)) < 24 << 6)))
728 // load and store indexed -> dform
729 insn
= (32 | ((insn
>> 6) & 0x1f)) << 26;
730 else if ((insn
& (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
731 // ldx, ldux, stdx, stdux -> ld, ldu, std, stdu
732 insn
= ((58 | ((insn
>> 6) & 4)) << 26) | ((insn
>> 6) & 1);
733 else if ((insn
& (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
735 insn
= (58 << 26) | 2;
742 // Modified version of symtab.h class Symbol member
743 // Given a direct absolute or pc-relative static relocation against
744 // the global symbol, this function returns whether a dynamic relocation
749 needs_dynamic_reloc(const Symbol
* gsym
, int flags
)
751 // No dynamic relocations in a static link!
752 if (parameters
->doing_static_link())
755 // A reference to an undefined symbol from an executable should be
756 // statically resolved to 0, and does not need a dynamic relocation.
757 // This matches gnu ld behavior.
758 if (gsym
->is_undefined() && !parameters
->options().shared())
761 // A reference to an absolute symbol does not need a dynamic relocation.
762 if (gsym
->is_absolute())
765 // An absolute reference within a position-independent output file
766 // will need a dynamic relocation.
767 if ((flags
& Symbol::ABSOLUTE_REF
)
768 && parameters
->options().output_is_position_independent())
771 // A function call that can branch to a local PLT entry does not need
772 // a dynamic relocation.
773 if ((flags
& Symbol::FUNCTION_CALL
) && gsym
->has_plt_offset())
776 // A reference to any PLT entry in a non-position-independent executable
777 // does not need a dynamic relocation.
778 // Except due to having function descriptors on powerpc64 we don't define
779 // functions to their plt code in an executable, so this doesn't apply.
781 && !parameters
->options().output_is_position_independent()
782 && gsym
->has_plt_offset())
785 // A reference to a symbol defined in a dynamic object or to a
786 // symbol that is preemptible will need a dynamic relocation.
787 if (gsym
->is_from_dynobj()
788 || gsym
->is_undefined()
789 || gsym
->is_preemptible())
792 // For all other cases, return FALSE.
796 // Modified version of symtab.h class Symbol member
797 // Whether we should use the PLT offset associated with a symbol for
798 // a relocation. FLAGS is a set of Reference_flags.
802 use_plt_offset(const Symbol
* gsym
, int flags
)
804 // If the symbol doesn't have a PLT offset, then naturally we
805 // don't want to use it.
806 if (!gsym
->has_plt_offset())
809 // For a STT_GNU_IFUNC symbol we always have to use the PLT entry.
810 if (gsym
->type() == elfcpp::STT_GNU_IFUNC
)
813 // If we are going to generate a dynamic relocation, then we will
814 // wind up using that, so no need to use the PLT entry.
815 if (needs_dynamic_reloc
<size
>(gsym
, flags
))
818 // If the symbol is from a dynamic object, we need to use the PLT
820 if (gsym
->is_from_dynobj())
823 // If we are generating a shared object, and gsym symbol is
824 // undefined or preemptible, we need to use the PLT entry.
825 if (parameters
->options().shared()
826 && (gsym
->is_undefined() || gsym
->is_preemptible()))
829 // If gsym is a call to a weak undefined symbol, we need to use
830 // the PLT entry; the symbol may be defined by a library loaded
832 if ((flags
& Symbol::FUNCTION_CALL
) && gsym
->is_weak_undefined())
835 // Otherwise we can use the regular definition.
839 template<int size
, bool big_endian
>
840 class Powerpc_relocate_functions
857 typedef Powerpc_relocate_functions
<size
, big_endian
> This
;
858 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
860 template<int valsize
>
862 has_overflow_signed(Address value
)
864 // limit = 1 << (valsize - 1) without shift count exceeding size of type
865 Address limit
= static_cast<Address
>(1) << ((valsize
- 1) >> 1);
866 limit
<<= ((valsize
- 1) >> 1);
867 limit
<<= ((valsize
- 1) - 2 * ((valsize
- 1) >> 1));
868 return value
+ limit
> (limit
<< 1) - 1;
871 template<int valsize
>
873 has_overflow_bitfield(Address value
)
875 Address limit
= static_cast<Address
>(1) << ((valsize
- 1) >> 1);
876 limit
<<= ((valsize
- 1) >> 1);
877 limit
<<= ((valsize
- 1) - 2 * ((valsize
- 1) >> 1));
878 return value
> (limit
<< 1) - 1 && value
+ limit
> (limit
<< 1) - 1;
881 template<int valsize
>
882 static inline enum overflow_status
883 overflowed(Address value
, enum overflow_check overflow
)
885 if (overflow
== check_signed
)
887 if (has_overflow_signed
<valsize
>(value
))
888 return status_overflow
;
890 else if (overflow
== check_bitfield
)
892 if (has_overflow_bitfield
<valsize
>(value
))
893 return status_overflow
;
898 // Do a simple RELA relocation
899 template<int valsize
>
900 static inline enum overflow_status
901 rela(unsigned char* view
, Address value
, enum overflow_check overflow
)
903 typedef typename
elfcpp::Swap
<valsize
, big_endian
>::Valtype Valtype
;
904 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
905 elfcpp::Swap
<valsize
, big_endian
>::writeval(wv
, value
);
906 return overflowed
<valsize
>(value
, overflow
);
909 template<int valsize
>
910 static inline enum overflow_status
911 rela(unsigned char* view
,
912 unsigned int right_shift
,
913 typename
elfcpp::Valtype_base
<valsize
>::Valtype dst_mask
,
915 enum overflow_check overflow
)
917 typedef typename
elfcpp::Swap
<valsize
, big_endian
>::Valtype Valtype
;
918 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
919 Valtype val
= elfcpp::Swap
<valsize
, big_endian
>::readval(wv
);
920 Valtype reloc
= value
>> right_shift
;
923 elfcpp::Swap
<valsize
, big_endian
>::writeval(wv
, val
| reloc
);
924 return overflowed
<valsize
>(value
>> right_shift
, overflow
);
927 // Do a simple RELA relocation, unaligned.
928 template<int valsize
>
929 static inline enum overflow_status
930 rela_ua(unsigned char* view
, Address value
, enum overflow_check overflow
)
932 elfcpp::Swap_unaligned
<valsize
, big_endian
>::writeval(view
, value
);
933 return overflowed
<valsize
>(value
, overflow
);
936 template<int valsize
>
937 static inline enum overflow_status
938 rela_ua(unsigned char* view
,
939 unsigned int right_shift
,
940 typename
elfcpp::Valtype_base
<valsize
>::Valtype dst_mask
,
942 enum overflow_check overflow
)
944 typedef typename
elfcpp::Swap_unaligned
<valsize
, big_endian
>::Valtype
946 Valtype val
= elfcpp::Swap
<valsize
, big_endian
>::readval(view
);
947 Valtype reloc
= value
>> right_shift
;
950 elfcpp::Swap_unaligned
<valsize
, big_endian
>::writeval(view
, val
| reloc
);
951 return overflowed
<valsize
>(value
>> right_shift
, overflow
);
955 // R_PPC64_ADDR64: (Symbol + Addend)
957 addr64(unsigned char* view
, Address value
)
958 { This::template rela
<64>(view
, value
, check_none
); }
960 // R_PPC64_UADDR64: (Symbol + Addend) unaligned
962 addr64_u(unsigned char* view
, Address value
)
963 { This::template rela_ua
<64>(view
, value
, check_none
); }
965 // R_POWERPC_ADDR32: (Symbol + Addend)
966 static inline enum overflow_status
967 addr32(unsigned char* view
, Address value
, enum overflow_check overflow
)
968 { return This::template rela
<32>(view
, value
, overflow
); }
970 // R_POWERPC_UADDR32: (Symbol + Addend) unaligned
971 static inline enum overflow_status
972 addr32_u(unsigned char* view
, Address value
, enum overflow_check overflow
)
973 { return This::template rela_ua
<32>(view
, value
, overflow
); }
975 // R_POWERPC_ADDR24: (Symbol + Addend) & 0x3fffffc
976 static inline enum overflow_status
977 addr24(unsigned char* view
, Address value
, enum overflow_check overflow
)
979 enum overflow_status stat
980 = This::template rela
<32>(view
, 0, 0x03fffffc, value
, overflow
);
981 if (overflow
!= check_none
&& (value
& 3) != 0)
982 stat
= status_overflow
;
986 // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff
987 static inline enum overflow_status
988 addr16(unsigned char* view
, Address value
, enum overflow_check overflow
)
989 { return This::template rela
<16>(view
, value
, overflow
); }
991 // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff, unaligned
992 static inline enum overflow_status
993 addr16_u(unsigned char* view
, Address value
, enum overflow_check overflow
)
994 { return This::template rela_ua
<16>(view
, value
, overflow
); }
996 // R_POWERPC_ADDR16_DS: (Symbol + Addend) & 0xfffc
997 static inline enum overflow_status
998 addr16_ds(unsigned char* view
, Address value
, enum overflow_check overflow
)
1000 enum overflow_status stat
1001 = This::template rela
<16>(view
, 0, 0xfffc, value
, overflow
);
1002 if (overflow
!= check_none
&& (value
& 3) != 0)
1003 stat
= status_overflow
;
1007 // R_POWERPC_ADDR16_HI: ((Symbol + Addend) >> 16) & 0xffff
1009 addr16_hi(unsigned char* view
, Address value
)
1010 { This::template rela
<16>(view
, 16, 0xffff, value
, check_none
); }
1012 // R_POWERPC_ADDR16_HA: ((Symbol + Addend + 0x8000) >> 16) & 0xffff
1014 addr16_ha(unsigned char* view
, Address value
)
1015 { This::addr16_hi(view
, value
+ 0x8000); }
1017 // R_POWERPC_ADDR16_HIGHER: ((Symbol + Addend) >> 32) & 0xffff
1019 addr16_hi2(unsigned char* view
, Address value
)
1020 { This::template rela
<16>(view
, 32, 0xffff, value
, check_none
); }
1022 // R_POWERPC_ADDR16_HIGHERA: ((Symbol + Addend + 0x8000) >> 32) & 0xffff
1024 addr16_ha2(unsigned char* view
, Address value
)
1025 { This::addr16_hi2(view
, value
+ 0x8000); }
1027 // R_POWERPC_ADDR16_HIGHEST: ((Symbol + Addend) >> 48) & 0xffff
1029 addr16_hi3(unsigned char* view
, Address value
)
1030 { This::template rela
<16>(view
, 48, 0xffff, value
, check_none
); }
1032 // R_POWERPC_ADDR16_HIGHESTA: ((Symbol + Addend + 0x8000) >> 48) & 0xffff
1034 addr16_ha3(unsigned char* view
, Address value
)
1035 { This::addr16_hi3(view
, value
+ 0x8000); }
1037 // R_POWERPC_ADDR14: (Symbol + Addend) & 0xfffc
1038 static inline enum overflow_status
1039 addr14(unsigned char* view
, Address value
, enum overflow_check overflow
)
1041 enum overflow_status stat
1042 = This::template rela
<32>(view
, 0, 0xfffc, value
, overflow
);
1043 if (overflow
!= check_none
&& (value
& 3) != 0)
1044 stat
= status_overflow
;
1049 // Stash away the index of .got2 or .opd in a relocatable object, if
1050 // such a section exists.
1052 template<int size
, bool big_endian
>
1054 Powerpc_relobj
<size
, big_endian
>::do_find_special_sections(
1055 Read_symbols_data
* sd
)
1057 const unsigned char* const pshdrs
= sd
->section_headers
->data();
1058 const unsigned char* namesu
= sd
->section_names
->data();
1059 const char* names
= reinterpret_cast<const char*>(namesu
);
1060 section_size_type names_size
= sd
->section_names_size
;
1061 const unsigned char* s
;
1063 s
= this->find_shdr(pshdrs
, size
== 32 ? ".got2" : ".opd",
1064 names
, names_size
, NULL
);
1067 unsigned int ndx
= (s
- pshdrs
) / elfcpp::Elf_sizes
<size
>::shdr_size
;
1068 this->special_
= ndx
;
1070 return Sized_relobj_file
<size
, big_endian
>::do_find_special_sections(sd
);
1073 // Examine .rela.opd to build info about function entry points.
1075 template<int size
, bool big_endian
>
1077 Powerpc_relobj
<size
, big_endian
>::scan_opd_relocs(
1079 const unsigned char* prelocs
,
1080 const unsigned char* plocal_syms
)
1084 typedef typename Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::Reloc
1086 const int reloc_size
1087 = Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
1088 const int sym_size
= elfcpp::Elf_sizes
<size
>::sym_size
;
1090 for (size_t i
= 0; i
< reloc_count
; ++i
, prelocs
+= reloc_size
)
1092 Reltype
reloc(prelocs
);
1093 typename
elfcpp::Elf_types
<size
>::Elf_WXword r_info
1094 = reloc
.get_r_info();
1095 unsigned int r_type
= elfcpp::elf_r_type
<size
>(r_info
);
1096 if (r_type
== elfcpp::R_PPC64_ADDR64
)
1098 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(r_info
);
1099 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
;
1102 if (r_sym
< this->local_symbol_count())
1104 typename
elfcpp::Sym
<size
, big_endian
>
1105 lsym(plocal_syms
+ r_sym
* sym_size
);
1106 shndx
= lsym
.get_st_shndx();
1107 shndx
= this->adjust_sym_shndx(r_sym
, shndx
, &is_ordinary
);
1108 value
= lsym
.get_st_value();
1111 shndx
= this->symbol_section_and_value(r_sym
, &value
,
1113 this->set_opd_ent(reloc
.get_r_offset(), shndx
,
1114 value
+ reloc
.get_r_addend());
1120 template<int size
, bool big_endian
>
1122 Powerpc_relobj
<size
, big_endian
>::do_read_relocs(Read_relocs_data
* rd
)
1124 Sized_relobj_file
<size
, big_endian
>::do_read_relocs(rd
);
1127 for (Read_relocs_data::Relocs_list::iterator p
= rd
->relocs
.begin();
1128 p
!= rd
->relocs
.end();
1131 if (p
->data_shndx
== this->opd_shndx())
1133 this->init_opd(this->section_size(this->opd_shndx()));
1134 this->scan_opd_relocs(p
->reloc_count
, p
->contents
->data(),
1135 rd
->local_symbols
->data());
1142 // Set up PowerPC target specific relobj.
1144 template<int size
, bool big_endian
>
1146 Target_powerpc
<size
, big_endian
>::do_make_elf_object(
1147 const std::string
& name
,
1148 Input_file
* input_file
,
1149 off_t offset
, const elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
1151 int et
= ehdr
.get_e_type();
1152 if (et
== elfcpp::ET_REL
)
1154 Powerpc_relobj
<size
, big_endian
>* obj
=
1155 new Powerpc_relobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
);
1159 else if (et
== elfcpp::ET_DYN
)
1161 Sized_dynobj
<size
, big_endian
>* obj
=
1162 new Sized_dynobj
<size
, big_endian
>(name
, input_file
, offset
, ehdr
);
1168 gold_error(_("%s: unsupported ELF file type %d"), name
.c_str(), et
);
1173 template<int size
, bool big_endian
>
1174 class Output_data_got_powerpc
: public Output_data_got
<size
, big_endian
>
1177 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Valtype
;
1178 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true, size
, big_endian
> Rela_dyn
;
1180 Output_data_got_powerpc(Symbol_table
* symtab
, Layout
* layout
)
1181 : Output_data_got
<size
, big_endian
>(),
1182 symtab_(symtab
), layout_(layout
),
1183 header_ent_cnt_(size
== 32 ? 3 : 1),
1184 header_index_(size
== 32 ? 0x2000 : 0)
1189 // Create a new GOT entry and return its offset.
1191 add_got_entry(Got_entry got_entry
)
1193 this->reserve_ent();
1194 return Output_data_got
<size
, big_endian
>::add_got_entry(got_entry
);
1197 // Create a pair of new GOT entries and return the offset of the first.
1199 add_got_entry_pair(Got_entry got_entry_1
, Got_entry got_entry_2
)
1201 this->reserve_ent(2);
1202 return Output_data_got
<size
, big_endian
>::add_got_entry_pair(got_entry_1
,
1207 add_constant_pair(Valtype c1
, Valtype c2
)
1209 this->reserve_ent(2);
1210 unsigned int got_offset
= this->add_constant(c1
);
1211 this->add_constant(c2
);
1215 // Offset of _GLOBAL_OFFSET_TABLE_.
1219 return this->got_offset(this->header_index_
);
1222 // Offset of base used to access the GOT/TOC.
1223 // The got/toc pointer reg will be set to this value.
1224 typename
elfcpp::Elf_types
<size
>::Elf_Off
1225 got_base_offset(const Powerpc_relobj
<size
, big_endian
>* object
) const
1228 return this->g_o_t();
1230 return (this->output_section()->address()
1231 + object
->toc_base_offset()
1235 // Ensure our GOT has a header.
1237 set_final_data_size()
1239 if (this->header_ent_cnt_
!= 0)
1240 this->make_header();
1241 Output_data_got
<size
, big_endian
>::set_final_data_size();
1244 // First word of GOT header needs some values that are not
1245 // handled by Output_data_got so poke them in here.
1246 // For 32-bit, address of .dynamic, for 64-bit, address of TOCbase.
1248 do_write(Output_file
* of
)
1250 this->replace_constant(this->header_index_
,
1252 ? this->layout_
->dynamic_section()->address()
1253 : this->output_section()->address() + 0x8000));
1255 Output_data_got
<size
, big_endian
>::do_write(of
);
1260 reserve_ent(unsigned int cnt
= 1)
1262 if (this->header_ent_cnt_
== 0)
1264 if (this->num_entries() + cnt
> this->header_index_
)
1265 this->make_header();
1271 this->header_ent_cnt_
= 0;
1272 this->header_index_
= this->num_entries();
1275 Output_data_got
<size
, big_endian
>::add_constant(0);
1276 Output_data_got
<size
, big_endian
>::add_constant(0);
1277 Output_data_got
<size
, big_endian
>::add_constant(0);
1279 // Define _GLOBAL_OFFSET_TABLE_ at the header
1280 this->symtab_
->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL
,
1281 Symbol_table::PREDEFINED
,
1282 this, this->g_o_t(), 0,
1289 Output_data_got
<size
, big_endian
>::add_constant(0);
1292 // Stashed pointers.
1293 Symbol_table
* symtab_
;
1297 unsigned int header_ent_cnt_
;
1298 // GOT header index.
1299 unsigned int header_index_
;
1302 // Get the GOT section, creating it if necessary.
1304 template<int size
, bool big_endian
>
1305 Output_data_got_powerpc
<size
, big_endian
>*
1306 Target_powerpc
<size
, big_endian
>::got_section(Symbol_table
* symtab
,
1309 if (this->got_
== NULL
)
1311 gold_assert(symtab
!= NULL
&& layout
!= NULL
);
1314 = new Output_data_got_powerpc
<size
, big_endian
>(symtab
, layout
);
1316 layout
->add_output_section_data(".got", elfcpp::SHT_PROGBITS
,
1317 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
1318 this->got_
, ORDER_DATA
, false);
1324 // Get the dynamic reloc section, creating it if necessary.
1326 template<int size
, bool big_endian
>
1327 typename Target_powerpc
<size
, big_endian
>::Reloc_section
*
1328 Target_powerpc
<size
, big_endian
>::rela_dyn_section(Layout
* layout
)
1330 if (this->rela_dyn_
== NULL
)
1332 gold_assert(layout
!= NULL
);
1333 this->rela_dyn_
= new Reloc_section(parameters
->options().combreloc());
1334 layout
->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA
,
1335 elfcpp::SHF_ALLOC
, this->rela_dyn_
,
1336 ORDER_DYNAMIC_RELOCS
, false);
1338 return this->rela_dyn_
;
1341 // A class to handle the PLT data.
1343 template<int size
, bool big_endian
>
1344 class Output_data_plt_powerpc
: public Output_section_data_build
1347 typedef Output_data_reloc
<elfcpp::SHT_RELA
, true,
1348 size
, big_endian
> Reloc_section
;
1350 Output_data_plt_powerpc(Layout
*, Target_powerpc
<size
, big_endian
>*);
1352 // Add an entry to the PLT.
1356 // Return the .rela.plt section data.
1357 const Reloc_section
*
1363 // Return the number of PLT entries.
1367 return ((this->current_data_size() - initial_plt_entry_size
)
1371 // Return the offset of the first non-reserved PLT entry.
1373 first_plt_entry_offset()
1374 { return initial_plt_entry_size
; }
1376 // Return the size of a PLT entry.
1378 get_plt_entry_size()
1379 { return plt_entry_size
; }
1383 do_adjust_output_section(Output_section
* os
)
1388 // Write to a map file.
1390 do_print_to_mapfile(Mapfile
* mapfile
) const
1391 { mapfile
->print_output_data(this, _("** PLT")); }
1394 // The size of an entry in the PLT.
1395 static const int plt_entry_size
= size
== 32 ? 4 : 24;
1396 // The size of the first reserved entry.
1397 static const int initial_plt_entry_size
= size
== 32 ? 0 : 24;
1399 // Write out the PLT data.
1401 do_write(Output_file
*);
1403 // The reloc section.
1404 Reloc_section
* rel_
;
1405 // Allows access to .glink for do_write.
1406 Target_powerpc
<size
, big_endian
>* targ_
;
1409 // Create the PLT section.
1411 template<int size
, bool big_endian
>
1412 Output_data_plt_powerpc
<size
, big_endian
>::Output_data_plt_powerpc(
1414 Target_powerpc
<size
, big_endian
>* targ
)
1415 : Output_section_data_build(size
== 32 ? 4 : 8),
1418 this->rel_
= new Reloc_section(false);
1419 layout
->add_output_section_data(".rela.plt", elfcpp::SHT_RELA
,
1420 elfcpp::SHF_ALLOC
, this->rel_
,
1421 ORDER_DYNAMIC_PLT_RELOCS
, false);
1424 // Add an entry to the PLT.
1426 template<int size
, bool big_endian
>
1428 Output_data_plt_powerpc
<size
, big_endian
>::add_entry(Symbol
* gsym
)
1430 if (!gsym
->has_plt_offset())
1432 off_t off
= this->current_data_size();
1435 off
+= initial_plt_entry_size
;
1436 gsym
->set_plt_offset(off
);
1437 gsym
->set_needs_dynsym_entry();
1438 this->rel_
->add_global(gsym
, elfcpp::R_POWERPC_JMP_SLOT
, this, off
, 0);
1439 off
+= plt_entry_size
;
1440 this->set_current_data_size(off
);
1444 static const uint32_t add_0_11_11
= 0x7c0b5a14;
1445 static const uint32_t add_3_3_2
= 0x7c631214;
1446 static const uint32_t add_3_3_13
= 0x7c636a14;
1447 static const uint32_t add_11_0_11
= 0x7d605a14;
1448 static const uint32_t add_12_2_11
= 0x7d825a14;
1449 static const uint32_t addi_11_11
= 0x396b0000;
1450 static const uint32_t addi_12_12
= 0x398c0000;
1451 static const uint32_t addi_2_2
= 0x38420000;
1452 static const uint32_t addi_3_2
= 0x38620000;
1453 static const uint32_t addi_3_3
= 0x38630000;
1454 static const uint32_t addis_0_2
= 0x3c020000;
1455 static const uint32_t addis_0_13
= 0x3c0d0000;
1456 static const uint32_t addis_11_11
= 0x3d6b0000;
1457 static const uint32_t addis_11_30
= 0x3d7e0000;
1458 static const uint32_t addis_12_12
= 0x3d8c0000;
1459 static const uint32_t addis_12_2
= 0x3d820000;
1460 static const uint32_t addis_3_2
= 0x3c620000;
1461 static const uint32_t addis_3_13
= 0x3c6d0000;
1462 static const uint32_t b
= 0x48000000;
1463 static const uint32_t bcl_20_31
= 0x429f0005;
1464 static const uint32_t bctr
= 0x4e800420;
1465 static const uint32_t blrl
= 0x4e800021;
1466 static const uint32_t cror_15_15_15
= 0x4def7b82;
1467 static const uint32_t cror_31_31_31
= 0x4ffffb82;
1468 static const uint32_t ld_11_12
= 0xe96c0000;
1469 static const uint32_t ld_11_2
= 0xe9620000;
1470 static const uint32_t ld_2_1
= 0xe8410000;
1471 static const uint32_t ld_2_11
= 0xe84b0000;
1472 static const uint32_t ld_2_12
= 0xe84c0000;
1473 static const uint32_t ld_2_2
= 0xe8420000;
1474 static const uint32_t li_0_0
= 0x38000000;
1475 static const uint32_t lis_0_0
= 0x3c000000;
1476 static const uint32_t lis_11
= 0x3d600000;
1477 static const uint32_t lis_12
= 0x3d800000;
1478 static const uint32_t lwz_0_12
= 0x800c0000;
1479 static const uint32_t lwz_11_11
= 0x816b0000;
1480 static const uint32_t lwz_11_30
= 0x817e0000;
1481 static const uint32_t lwz_12_12
= 0x818c0000;
1482 static const uint32_t lwzu_0_12
= 0x840c0000;
1483 static const uint32_t mflr_0
= 0x7c0802a6;
1484 static const uint32_t mflr_11
= 0x7d6802a6;
1485 static const uint32_t mflr_12
= 0x7d8802a6;
1486 static const uint32_t mtctr_0
= 0x7c0903a6;
1487 static const uint32_t mtctr_11
= 0x7d6903a6;
1488 static const uint32_t mtlr_0
= 0x7c0803a6;
1489 static const uint32_t mtlr_12
= 0x7d8803a6;
1490 static const uint32_t nop
= 0x60000000;
1491 static const uint32_t ori_0_0_0
= 0x60000000;
1492 static const uint32_t std_2_1
= 0xf8410000;
1493 static const uint32_t sub_11_11_12
= 0x7d6c5850;
1495 // Write out the PLT.
1497 template<int size
, bool big_endian
>
1499 Output_data_plt_powerpc
<size
, big_endian
>::do_write(Output_file
* of
)
1503 const off_t offset
= this->offset();
1504 const section_size_type oview_size
1505 = convert_to_section_size_type(this->data_size());
1506 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
1507 unsigned char* pov
= oview
;
1508 unsigned char* endpov
= oview
+ oview_size
;
1510 // The address the .glink branch table
1511 const Output_data_glink
<size
, big_endian
>* glink
1512 = this->targ_
->glink_section();
1513 elfcpp::Elf_types
<32>::Elf_Addr branch_tab
1514 = glink
->address() + glink
->pltresolve();
1516 while (pov
< endpov
)
1518 elfcpp::Swap
<32, big_endian
>::writeval(pov
, branch_tab
);
1523 of
->write_output_view(offset
, oview_size
, oview
);
1527 // Create the PLT section.
1529 template<int size
, bool big_endian
>
1531 Target_powerpc
<size
, big_endian
>::make_plt_section(Layout
* layout
)
1533 if (this->plt_
== NULL
)
1535 if (this->glink_
== NULL
)
1536 make_glink_section(layout
);
1538 // Ensure that .rela.dyn always appears before .rela.plt This is
1539 // necessary due to how, on PowerPC and some other targets, .rela.dyn
1540 // needs to include .rela.plt in it's range.
1541 this->rela_dyn_section(layout
);
1543 this->plt_
= new Output_data_plt_powerpc
<size
, big_endian
>(layout
, this);
1544 layout
->add_output_section_data(".plt",
1546 ? elfcpp::SHT_PROGBITS
1547 : elfcpp::SHT_NOBITS
),
1548 elfcpp::SHF_ALLOC
| elfcpp::SHF_WRITE
,
1557 // A class to handle .glink.
1559 template<int size
, bool big_endian
>
1560 class Output_data_glink
: public Output_section_data
1563 static const int pltresolve_size
= 16*4;
1565 Output_data_glink(Target_powerpc
<size
, big_endian
>*);
1569 add_entry(const Symbol
*, const elfcpp::Rela
<size
, big_endian
>&,
1570 const Sized_relobj
<size
, big_endian
>*);
1573 find_entry(const Symbol
*, const elfcpp::Rela
<size
, big_endian
>&,
1574 const Sized_relobj
<size
, big_endian
>*) const;
1577 glink_entry_size() const
1582 // FIXME: We should be using multiple glink sections for
1583 // stubs to support > 33M applications.
1590 return this->pltresolve_
;
1594 // Write to a map file.
1596 do_print_to_mapfile(Mapfile
* mapfile
) const
1597 { mapfile
->print_output_data(this, _("** glink")); }
1601 set_final_data_size();
1605 do_write(Output_file
*);
1610 Glink_sym_ent(const Symbol
* sym
,
1611 const elfcpp::Rela
<size
, big_endian
>& reloc
,
1612 const Sized_relobj
<size
, big_endian
>* object
)
1613 : sym_(sym
), addend_(0), object_(0)
1616 this->addend_
= reloc
.get_r_addend();
1617 else if (parameters
->options().output_is_position_independent()
1618 && (elfcpp::elf_r_type
<size
>(reloc
.get_r_info())
1619 == elfcpp::R_PPC_PLTREL24
))
1621 this->addend_
= reloc
.get_r_addend();
1622 if (this->addend_
!= 0)
1623 this->object_
= object
;
1627 bool operator==(const Glink_sym_ent
& that
) const
1629 return (this->sym_
== that
.sym_
1630 && this->object_
== that
.object_
1631 && this->addend_
== that
.addend_
);
1635 unsigned int addend_
;
1636 const Sized_relobj
<size
, big_endian
>* object_
;
1639 class Glink_sym_ent_hash
1642 size_t operator()(const Glink_sym_ent
& ent
) const
1644 return (reinterpret_cast<uintptr_t>(ent
.sym_
)
1645 ^ reinterpret_cast<uintptr_t>(ent
.object_
)
1650 // Map sym/object/addend to index.
1651 typedef Unordered_map
<Glink_sym_ent
, unsigned int,
1652 Glink_sym_ent_hash
> Glink_entries
;
1653 Glink_entries glink_entries_
;
1655 // Offset of pltresolve stub (actually, branch table for 32-bit)
1658 // Allows access to .got and .plt for do_write.
1659 Target_powerpc
<size
, big_endian
>* targ_
;
1662 // Create the glink section.
1664 template<int size
, bool big_endian
>
1665 Output_data_glink
<size
, big_endian
>::Output_data_glink(
1666 Target_powerpc
<size
, big_endian
>* targ
)
1667 : Output_section_data(16),
1668 pltresolve_(0), targ_(targ
)
1672 // Add an entry to glink, if we do not already have one for this
1673 // sym/object/addend combo.
1675 template<int size
, bool big_endian
>
1677 Output_data_glink
<size
, big_endian
>::add_entry(
1679 const elfcpp::Rela
<size
, big_endian
>& reloc
,
1680 const Sized_relobj
<size
, big_endian
>* object
)
1682 Glink_sym_ent
ent(gsym
, reloc
, object
);
1683 unsigned int indx
= this->glink_entries_
.size();
1684 this->glink_entries_
.insert(std::make_pair(ent
, indx
));
1687 template<int size
, bool big_endian
>
1689 Output_data_glink
<size
, big_endian
>::find_entry(
1691 const elfcpp::Rela
<size
, big_endian
>& reloc
,
1692 const Sized_relobj
<size
, big_endian
>* object
) const
1694 Glink_sym_ent
ent(gsym
, reloc
, object
);
1695 typename
Glink_entries::const_iterator p
= this->glink_entries_
.find(ent
);
1696 gold_assert(p
!= this->glink_entries_
.end());
1700 template<int size
, bool big_endian
>
1702 Output_data_glink
<size
, big_endian
>::set_final_data_size()
1704 unsigned int count
= this->glink_entries_
.size();
1705 off_t total
= count
;
1712 this->pltresolve_
= total
;
1714 // space for branch table
1715 total
+= 4 * (count
- 1);
1717 total
+= -total
& 15;
1718 total
+= this->pltresolve_size
;
1723 this->pltresolve_
= total
;
1724 total
+= this->pltresolve_size
;
1726 // space for branch table
1729 total
+= 4 * (count
- 0x8000);
1733 this->set_data_size(total
);
1736 static inline uint32_t
1742 static inline uint32_t
1748 static inline uint32_t
1751 return hi(a
+ 0x8000);
1754 template<bool big_endian
>
1756 write_insn(unsigned char* p
, uint32_t v
)
1758 elfcpp::Swap
<32, big_endian
>::writeval(p
, v
);
1761 // Write out .glink.
1763 template<int size
, bool big_endian
>
1765 Output_data_glink
<size
, big_endian
>::do_write(Output_file
* of
)
1767 const off_t off
= this->offset();
1768 const section_size_type oview_size
=
1769 convert_to_section_size_type(this->data_size());
1770 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
1773 // The base address of the .plt section.
1774 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
1775 Address plt_base
= this->targ_
->plt_section()->address();
1777 const Output_data_got_powerpc
<size
, big_endian
>* got
1778 = this->targ_
->got_section();
1782 Address got_os_addr
= got
->output_section()->address();
1784 // Write out call stubs.
1785 typename
Glink_entries::const_iterator g
;
1786 for (g
= this->glink_entries_
.begin();
1787 g
!= this->glink_entries_
.end();
1790 Address plt_addr
= plt_base
+ g
->first
.sym_
->plt_offset();
1791 const Powerpc_relobj
<size
, big_endian
>* ppcobj
= static_cast
1792 <const Powerpc_relobj
<size
, big_endian
>*>(g
->first
.object_
);
1793 Address got_addr
= got_os_addr
+ ppcobj
->toc_base_offset();
1794 Address pltoff
= plt_addr
- got_addr
;
1796 if (pltoff
+ 0x80008000 > 0xffffffff || (pltoff
& 7) != 0)
1797 gold_error(_("%s: linkage table error against `%s'"),
1798 g
->first
.object_
->name().c_str(),
1799 g
->first
.sym_
->demangled_name().c_str());
1801 p
= oview
+ g
->second
* this->glink_entry_size();
1802 if (ha(pltoff
) != 0)
1804 write_insn
<big_endian
>(p
, addis_12_2
+ ha(pltoff
)), p
+= 4;
1805 write_insn
<big_endian
>(p
, std_2_1
+ 40), p
+= 4;
1806 write_insn
<big_endian
>(p
, ld_11_12
+ l(pltoff
)), p
+= 4;
1807 if (ha(pltoff
+ 16) != ha(pltoff
))
1809 write_insn
<big_endian
>(p
, addi_12_12
+ l(pltoff
)), p
+= 4;
1812 write_insn
<big_endian
>(p
, mtctr_11
), p
+= 4;
1813 write_insn
<big_endian
>(p
, ld_2_12
+ l(pltoff
+ 8)), p
+= 4;
1814 write_insn
<big_endian
>(p
, ld_11_12
+ l(pltoff
+ 16)), p
+= 4;
1815 write_insn
<big_endian
>(p
, bctr
), p
+= 4;
1819 write_insn
<big_endian
>(p
, std_2_1
+ 40), p
+= 4;
1820 write_insn
<big_endian
>(p
, ld_11_2
+ l(pltoff
)), p
+= 4;
1821 if (ha(pltoff
+ 16) != ha(pltoff
))
1823 write_insn
<big_endian
>(p
, addi_2_2
+ l(pltoff
)), p
+= 4;
1826 write_insn
<big_endian
>(p
, mtctr_11
), p
+= 4;
1827 write_insn
<big_endian
>(p
, ld_11_2
+ l(pltoff
+ 16)), p
+= 4;
1828 write_insn
<big_endian
>(p
, ld_2_2
+ l(pltoff
+ 8)), p
+= 4;
1829 write_insn
<big_endian
>(p
, bctr
), p
+= 4;
1833 // Write pltresolve stub.
1834 p
= oview
+ this->pltresolve_
;
1835 Address after_bcl
= this->address() + this->pltresolve_
+ 16;
1836 Address pltoff
= plt_base
- after_bcl
;
1838 elfcpp::Swap
<64, big_endian
>::writeval(p
, pltoff
), p
+= 8;
1840 write_insn
<big_endian
>(p
, mflr_12
), p
+= 4;
1841 write_insn
<big_endian
>(p
, bcl_20_31
), p
+= 4;
1842 write_insn
<big_endian
>(p
, mflr_11
), p
+= 4;
1843 write_insn
<big_endian
>(p
, ld_2_11
+ l(-16)), p
+= 4;
1844 write_insn
<big_endian
>(p
, mtlr_12
), p
+= 4;
1845 write_insn
<big_endian
>(p
, add_12_2_11
), p
+= 4;
1846 write_insn
<big_endian
>(p
, ld_11_12
+ 0), p
+= 4;
1847 write_insn
<big_endian
>(p
, ld_2_12
+ 8), p
+= 4;
1848 write_insn
<big_endian
>(p
, mtctr_11
), p
+= 4;
1849 write_insn
<big_endian
>(p
, ld_11_12
+ 16), p
+= 4;
1850 write_insn
<big_endian
>(p
, bctr
), p
+= 4;
1851 while (p
< oview
+ this->pltresolve_
+ this->pltresolve_size
)
1852 write_insn
<big_endian
>(p
, nop
), p
+= 4;
1854 // Write lazy link call stubs.
1856 while (p
< oview
+ oview_size
)
1860 write_insn
<big_endian
>(p
, li_0_0
+ indx
), p
+= 4;
1864 write_insn
<big_endian
>(p
, lis_0_0
+ hi(indx
)), p
+= 4;
1865 write_insn
<big_endian
>(p
, ori_0_0_0
+ l(indx
)), p
+= 4;
1867 uint32_t branch_off
= this->pltresolve_
+ 8 - (p
- oview
);
1868 write_insn
<big_endian
>(p
, b
+ (branch_off
& 0x3fffffc)), p
+= 4;
1874 // The address of _GLOBAL_OFFSET_TABLE_.
1875 Address g_o_t
= got
->address() + got
->g_o_t();
1877 // Write out call stubs.
1878 typename
Glink_entries::const_iterator g
;
1879 for (g
= this->glink_entries_
.begin();
1880 g
!= this->glink_entries_
.end();
1883 Address plt_addr
= plt_base
+ g
->first
.sym_
->plt_offset();
1885 const Address invalid_address
= static_cast<Address
>(-1);
1887 p
= oview
+ g
->second
* this->glink_entry_size();
1888 if (parameters
->options().output_is_position_independent())
1890 const Powerpc_relobj
<size
, big_endian
>* object
= static_cast
1891 <const Powerpc_relobj
<size
, big_endian
>*>(g
->first
.object_
);
1894 unsigned int got2
= object
->got2_shndx();
1895 got_addr
= g
->first
.object_
->get_output_section_offset(got2
);
1896 gold_assert(got_addr
!= invalid_address
);
1897 got_addr
+= (g
->first
.object_
->output_section(got2
)->address()
1898 + g
->first
.addend_
);
1903 Address pltoff
= plt_addr
- got_addr
;
1904 if (ha(pltoff
) == 0)
1906 write_insn
<big_endian
>(p
+ 0, lwz_11_30
+ l(pltoff
));
1907 write_insn
<big_endian
>(p
+ 4, mtctr_11
);
1908 write_insn
<big_endian
>(p
+ 8, bctr
);
1912 write_insn
<big_endian
>(p
+ 0, addis_11_30
+ ha(pltoff
));
1913 write_insn
<big_endian
>(p
+ 4, lwz_11_11
+ l(pltoff
));
1914 write_insn
<big_endian
>(p
+ 8, mtctr_11
);
1915 write_insn
<big_endian
>(p
+ 12, bctr
);
1920 write_insn
<big_endian
>(p
+ 0, lis_11
+ ha(plt_addr
));
1921 write_insn
<big_endian
>(p
+ 4, lwz_11_11
+ l(plt_addr
));
1922 write_insn
<big_endian
>(p
+ 8, mtctr_11
);
1923 write_insn
<big_endian
>(p
+ 12, bctr
);
1927 // Write out pltresolve branch table.
1928 p
= oview
+ this->pltresolve_
;
1929 unsigned int the_end
= oview_size
- this->pltresolve_size
;
1930 unsigned char* end_p
= oview
+ the_end
;
1931 while (p
< end_p
- 8 * 4)
1932 write_insn
<big_endian
>(p
, b
+ end_p
- p
), p
+= 4;
1934 write_insn
<big_endian
>(p
, nop
), p
+= 4;
1936 // Write out pltresolve call stub.
1937 if (parameters
->options().output_is_position_independent())
1939 Address res0_off
= this->pltresolve_
;
1940 Address after_bcl_off
= the_end
+ 12;
1941 Address bcl_res0
= after_bcl_off
- res0_off
;
1943 write_insn
<big_endian
>(p
+ 0, addis_11_11
+ ha(bcl_res0
));
1944 write_insn
<big_endian
>(p
+ 4, mflr_0
);
1945 write_insn
<big_endian
>(p
+ 8, bcl_20_31
);
1946 write_insn
<big_endian
>(p
+ 12, addi_11_11
+ l(bcl_res0
));
1947 write_insn
<big_endian
>(p
+ 16, mflr_12
);
1948 write_insn
<big_endian
>(p
+ 20, mtlr_0
);
1949 write_insn
<big_endian
>(p
+ 24, sub_11_11_12
);
1951 Address got_bcl
= g_o_t
+ 4 - (after_bcl_off
+ this->address());
1953 write_insn
<big_endian
>(p
+ 28, addis_12_12
+ ha(got_bcl
));
1954 if (ha(got_bcl
) == ha(got_bcl
+ 4))
1956 write_insn
<big_endian
>(p
+ 32, lwz_0_12
+ l(got_bcl
));
1957 write_insn
<big_endian
>(p
+ 36, lwz_12_12
+ l(got_bcl
+ 4));
1961 write_insn
<big_endian
>(p
+ 32, lwzu_0_12
+ l(got_bcl
));
1962 write_insn
<big_endian
>(p
+ 36, lwz_12_12
+ 4);
1964 write_insn
<big_endian
>(p
+ 40, mtctr_0
);
1965 write_insn
<big_endian
>(p
+ 44, add_0_11_11
);
1966 write_insn
<big_endian
>(p
+ 48, add_11_0_11
);
1967 write_insn
<big_endian
>(p
+ 52, bctr
);
1968 write_insn
<big_endian
>(p
+ 56, nop
);
1969 write_insn
<big_endian
>(p
+ 60, nop
);
1973 Address res0
= this->pltresolve_
+ this->address();
1975 write_insn
<big_endian
>(p
+ 0, lis_12
+ ha(g_o_t
+ 4));
1976 write_insn
<big_endian
>(p
+ 4, addis_11_11
+ ha(-res0
));
1977 if (ha(g_o_t
+ 4) == ha(g_o_t
+ 8))
1978 write_insn
<big_endian
>(p
+ 8, lwz_0_12
+ l(g_o_t
+ 4));
1980 write_insn
<big_endian
>(p
+ 8, lwzu_0_12
+ l(g_o_t
+ 4));
1981 write_insn
<big_endian
>(p
+ 12, addi_11_11
+ l(-res0
));
1982 write_insn
<big_endian
>(p
+ 16, mtctr_0
);
1983 write_insn
<big_endian
>(p
+ 20, add_0_11_11
);
1984 if (ha(g_o_t
+ 4) == ha(g_o_t
+ 8))
1985 write_insn
<big_endian
>(p
+ 24, lwz_12_12
+ l(g_o_t
+ 8));
1987 write_insn
<big_endian
>(p
+ 24, lwz_12_12
+ 4);
1988 write_insn
<big_endian
>(p
+ 28, add_11_0_11
);
1989 write_insn
<big_endian
>(p
+ 32, bctr
);
1990 write_insn
<big_endian
>(p
+ 36, nop
);
1991 write_insn
<big_endian
>(p
+ 40, nop
);
1992 write_insn
<big_endian
>(p
+ 44, nop
);
1993 write_insn
<big_endian
>(p
+ 48, nop
);
1994 write_insn
<big_endian
>(p
+ 52, nop
);
1995 write_insn
<big_endian
>(p
+ 56, nop
);
1996 write_insn
<big_endian
>(p
+ 60, nop
);
2001 of
->write_output_view(off
, oview_size
, oview
);
2004 // Create the glink section.
2006 template<int size
, bool big_endian
>
2008 Target_powerpc
<size
, big_endian
>::make_glink_section(Layout
* layout
)
2010 if (this->glink_
== NULL
)
2012 this->glink_
= new Output_data_glink
<size
, big_endian
>(this);
2013 layout
->add_output_section_data(".text", elfcpp::SHT_PROGBITS
,
2014 elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
,
2015 this->glink_
, ORDER_TEXT
, false);
2019 // Create a PLT entry for a global symbol.
2021 template<int size
, bool big_endian
>
2023 Target_powerpc
<size
, big_endian
>::make_plt_entry(
2026 const elfcpp::Rela
<size
, big_endian
>& reloc
,
2027 const Sized_relobj
<size
, big_endian
>* object
)
2029 if (this->plt_
== NULL
)
2030 this->make_plt_section(layout
);
2032 this->plt_
->add_entry(gsym
);
2034 this->glink_
->add_entry(gsym
, reloc
, object
);
2037 // Return the number of entries in the PLT.
2039 template<int size
, bool big_endian
>
2041 Target_powerpc
<size
, big_endian
>::plt_entry_count() const
2043 if (this->plt_
== NULL
)
2045 return this->plt_
->entry_count();
2048 // Return the offset of the first non-reserved PLT entry.
2050 template<int size
, bool big_endian
>
2052 Target_powerpc
<size
, big_endian
>::first_plt_entry_offset() const
2054 return Output_data_plt_powerpc
<size
, big_endian
>::first_plt_entry_offset();
2057 // Return the size of each PLT entry.
2059 template<int size
, bool big_endian
>
2061 Target_powerpc
<size
, big_endian
>::plt_entry_size() const
2063 return Output_data_plt_powerpc
<size
, big_endian
>::get_plt_entry_size();
2066 // Create a GOT entry for local dynamic __tls_get_addr calls.
2068 template<int size
, bool big_endian
>
2070 Target_powerpc
<size
, big_endian
>::tlsld_got_offset(
2071 Symbol_table
* symtab
,
2073 Sized_relobj_file
<size
, big_endian
>* object
)
2075 if (this->tlsld_got_offset_
== -1U)
2077 gold_assert(symtab
!= NULL
&& layout
!= NULL
&& object
!= NULL
);
2078 Reloc_section
* rela_dyn
= this->rela_dyn_section(layout
);
2079 Output_data_got_powerpc
<size
, big_endian
>* got
2080 = this->got_section(symtab
, layout
);
2081 unsigned int got_offset
= got
->add_constant_pair(0, 0);
2082 rela_dyn
->add_local(object
, 0, elfcpp::R_POWERPC_DTPMOD
, got
,
2084 this->tlsld_got_offset_
= got_offset
;
2086 return this->tlsld_got_offset_
;
2089 // Get the Reference_flags for a particular relocation.
2091 template<int size
, bool big_endian
>
2093 Target_powerpc
<size
, big_endian
>::Scan::get_reference_flags(unsigned int r_type
)
2097 case elfcpp::R_POWERPC_NONE
:
2098 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
2099 case elfcpp::R_POWERPC_GNU_VTENTRY
:
2100 case elfcpp::R_PPC64_TOC
:
2101 // No symbol reference.
2104 case elfcpp::R_PPC64_ADDR64
:
2105 case elfcpp::R_PPC64_UADDR64
:
2106 case elfcpp::R_POWERPC_ADDR32
:
2107 case elfcpp::R_POWERPC_UADDR32
:
2108 case elfcpp::R_POWERPC_ADDR16
:
2109 case elfcpp::R_POWERPC_UADDR16
:
2110 case elfcpp::R_POWERPC_ADDR16_LO
:
2111 case elfcpp::R_POWERPC_ADDR16_HI
:
2112 case elfcpp::R_POWERPC_ADDR16_HA
:
2113 return Symbol::ABSOLUTE_REF
;
2115 case elfcpp::R_POWERPC_ADDR24
:
2116 case elfcpp::R_POWERPC_ADDR14
:
2117 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
2118 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
2119 return Symbol::FUNCTION_CALL
| Symbol::ABSOLUTE_REF
;
2121 case elfcpp::R_POWERPC_REL32
:
2122 case elfcpp::R_PPC_LOCAL24PC
:
2123 case elfcpp::R_POWERPC_REL16
:
2124 case elfcpp::R_POWERPC_REL16_LO
:
2125 case elfcpp::R_POWERPC_REL16_HI
:
2126 case elfcpp::R_POWERPC_REL16_HA
:
2127 return Symbol::RELATIVE_REF
;
2129 case elfcpp::R_POWERPC_REL24
:
2130 case elfcpp::R_PPC_PLTREL24
:
2131 case elfcpp::R_POWERPC_REL14
:
2132 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
2133 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
2134 return Symbol::FUNCTION_CALL
| Symbol::RELATIVE_REF
;
2136 case elfcpp::R_POWERPC_GOT16
:
2137 case elfcpp::R_POWERPC_GOT16_LO
:
2138 case elfcpp::R_POWERPC_GOT16_HI
:
2139 case elfcpp::R_POWERPC_GOT16_HA
:
2140 case elfcpp::R_PPC64_TOC16
:
2141 case elfcpp::R_PPC64_TOC16_LO
:
2142 case elfcpp::R_PPC64_TOC16_HI
:
2143 case elfcpp::R_PPC64_TOC16_HA
:
2144 case elfcpp::R_PPC64_TOC16_DS
:
2145 case elfcpp::R_PPC64_TOC16_LO_DS
:
2147 return Symbol::ABSOLUTE_REF
;
2149 case elfcpp::R_POWERPC_GOT_TPREL16
:
2150 case elfcpp::R_POWERPC_TLS
:
2151 return Symbol::TLS_REF
;
2153 case elfcpp::R_POWERPC_COPY
:
2154 case elfcpp::R_POWERPC_GLOB_DAT
:
2155 case elfcpp::R_POWERPC_JMP_SLOT
:
2156 case elfcpp::R_POWERPC_RELATIVE
:
2157 case elfcpp::R_POWERPC_DTPMOD
:
2159 // Not expected. We will give an error later.
2164 // Report an unsupported relocation against a local symbol.
2166 template<int size
, bool big_endian
>
2168 Target_powerpc
<size
, big_endian
>::Scan::unsupported_reloc_local(
2169 Sized_relobj_file
<size
, big_endian
>* object
,
2170 unsigned int r_type
)
2172 gold_error(_("%s: unsupported reloc %u against local symbol"),
2173 object
->name().c_str(), r_type
);
2176 // We are about to emit a dynamic relocation of type R_TYPE. If the
2177 // dynamic linker does not support it, issue an error.
2179 template<int size
, bool big_endian
>
2181 Target_powerpc
<size
, big_endian
>::Scan::check_non_pic(Relobj
* object
,
2182 unsigned int r_type
)
2184 gold_assert(r_type
!= elfcpp::R_POWERPC_NONE
);
2186 // These are the relocation types supported by glibc for both 32-bit
2187 // and 64-bit powerpc.
2190 case elfcpp::R_POWERPC_RELATIVE
:
2191 case elfcpp::R_POWERPC_GLOB_DAT
:
2192 case elfcpp::R_POWERPC_DTPMOD
:
2193 case elfcpp::R_POWERPC_DTPREL
:
2194 case elfcpp::R_POWERPC_TPREL
:
2195 case elfcpp::R_POWERPC_JMP_SLOT
:
2196 case elfcpp::R_POWERPC_COPY
:
2197 case elfcpp::R_POWERPC_ADDR32
:
2198 case elfcpp::R_POWERPC_ADDR24
:
2199 case elfcpp::R_POWERPC_REL24
:
2210 // These are the relocation types supported only on 64-bit.
2211 case elfcpp::R_PPC64_ADDR64
:
2212 case elfcpp::R_PPC64_TPREL16_LO_DS
:
2213 case elfcpp::R_PPC64_TPREL16_DS
:
2214 case elfcpp::R_POWERPC_TPREL16
:
2215 case elfcpp::R_POWERPC_TPREL16_LO
:
2216 case elfcpp::R_POWERPC_TPREL16_HI
:
2217 case elfcpp::R_POWERPC_TPREL16_HA
:
2218 case elfcpp::R_PPC64_TPREL16_HIGHER
:
2219 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
2220 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
2221 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
2222 case elfcpp::R_PPC64_ADDR16_LO_DS
:
2223 case elfcpp::R_POWERPC_ADDR16_LO
:
2224 case elfcpp::R_POWERPC_ADDR16_HI
:
2225 case elfcpp::R_POWERPC_ADDR16_HA
:
2226 case elfcpp::R_POWERPC_ADDR30
:
2227 case elfcpp::R_PPC64_UADDR64
:
2228 case elfcpp::R_POWERPC_UADDR32
:
2229 case elfcpp::R_POWERPC_ADDR16
:
2230 case elfcpp::R_POWERPC_UADDR16
:
2231 case elfcpp::R_PPC64_ADDR16_DS
:
2232 case elfcpp::R_PPC64_ADDR16_HIGHER
:
2233 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
2234 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
2235 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
2236 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
2237 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
2238 case elfcpp::R_POWERPC_REL32
:
2239 case elfcpp::R_PPC64_REL64
:
2250 // These are the relocation types supported only on 32-bit.
2257 // This prevents us from issuing more than one error per reloc
2258 // section. But we can still wind up issuing more than one
2259 // error per object file.
2260 if (this->issued_non_pic_error_
)
2262 gold_assert(parameters
->options().output_is_position_independent());
2263 object
->error(_("requires unsupported dynamic reloc; "
2264 "recompile with -fPIC"));
2265 this->issued_non_pic_error_
= true;
2269 // Scan a relocation for a local symbol.
2271 template<int size
, bool big_endian
>
2273 Target_powerpc
<size
, big_endian
>::Scan::local(
2274 Symbol_table
* symtab
,
2276 Target_powerpc
<size
, big_endian
>* target
,
2277 Sized_relobj_file
<size
, big_endian
>* object
,
2278 unsigned int data_shndx
,
2279 Output_section
* output_section
,
2280 const elfcpp::Rela
<size
, big_endian
>& reloc
,
2281 unsigned int r_type
,
2282 const elfcpp::Sym
<size
, big_endian
>& lsym
)
2284 Powerpc_relobj
<size
, big_endian
>* ppc_object
2285 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
2289 case elfcpp::R_POWERPC_NONE
:
2290 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
2291 case elfcpp::R_POWERPC_GNU_VTENTRY
:
2292 case elfcpp::R_PPC64_TOCSAVE
:
2293 case elfcpp::R_PPC_EMB_MRKREF
:
2296 case elfcpp::R_PPC64_TOC
:
2298 Output_data_got_powerpc
<size
, big_endian
>* got
2299 = target
->got_section(symtab
, layout
);
2300 if (parameters
->options().output_is_position_independent())
2302 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
2303 rela_dyn
->add_output_section_relative(got
->output_section(),
2304 elfcpp::R_POWERPC_RELATIVE
,
2307 reloc
.get_r_offset(),
2308 ppc_object
->toc_base_offset());
2313 case elfcpp::R_PPC64_ADDR64
:
2314 case elfcpp::R_PPC64_UADDR64
:
2315 case elfcpp::R_POWERPC_ADDR32
:
2316 case elfcpp::R_POWERPC_UADDR32
:
2317 case elfcpp::R_POWERPC_ADDR24
:
2318 case elfcpp::R_POWERPC_ADDR16
:
2319 case elfcpp::R_POWERPC_ADDR16_LO
:
2320 case elfcpp::R_POWERPC_ADDR16_HI
:
2321 case elfcpp::R_POWERPC_ADDR16_HA
:
2322 case elfcpp::R_POWERPC_UADDR16
:
2323 case elfcpp::R_PPC64_ADDR16_HIGHER
:
2324 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
2325 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
2326 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
2327 case elfcpp::R_PPC64_ADDR16_DS
:
2328 case elfcpp::R_PPC64_ADDR16_LO_DS
:
2329 case elfcpp::R_POWERPC_ADDR14
:
2330 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
2331 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
2332 // If building a shared library (or a position-independent
2333 // executable), we need to create a dynamic relocation for
2335 if (parameters
->options().output_is_position_independent())
2337 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
2339 if ((size
== 32 && r_type
== elfcpp::R_POWERPC_ADDR32
)
2340 || (size
== 64 && r_type
== elfcpp::R_PPC64_ADDR64
))
2342 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
2343 rela_dyn
->add_local_relative(object
, r_sym
,
2344 elfcpp::R_POWERPC_RELATIVE
,
2345 output_section
, data_shndx
,
2346 reloc
.get_r_offset(),
2347 reloc
.get_r_addend(), false);
2351 check_non_pic(object
, r_type
);
2352 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
2353 rela_dyn
->add_local(object
, r_sym
, r_type
, output_section
,
2354 data_shndx
, reloc
.get_r_offset(),
2355 reloc
.get_r_addend());
2360 case elfcpp::R_POWERPC_REL32
:
2361 case elfcpp::R_POWERPC_REL24
:
2362 case elfcpp::R_PPC_LOCAL24PC
:
2363 case elfcpp::R_POWERPC_REL16
:
2364 case elfcpp::R_POWERPC_REL16_LO
:
2365 case elfcpp::R_POWERPC_REL16_HI
:
2366 case elfcpp::R_POWERPC_REL16_HA
:
2367 case elfcpp::R_POWERPC_REL14
:
2368 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
2369 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
2370 case elfcpp::R_POWERPC_SECTOFF
:
2371 case elfcpp::R_POWERPC_TPREL16
:
2372 case elfcpp::R_POWERPC_DTPREL16
:
2373 case elfcpp::R_POWERPC_SECTOFF_LO
:
2374 case elfcpp::R_POWERPC_TPREL16_LO
:
2375 case elfcpp::R_POWERPC_DTPREL16_LO
:
2376 case elfcpp::R_POWERPC_SECTOFF_HI
:
2377 case elfcpp::R_POWERPC_TPREL16_HI
:
2378 case elfcpp::R_POWERPC_DTPREL16_HI
:
2379 case elfcpp::R_POWERPC_SECTOFF_HA
:
2380 case elfcpp::R_POWERPC_TPREL16_HA
:
2381 case elfcpp::R_POWERPC_DTPREL16_HA
:
2382 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
2383 case elfcpp::R_PPC64_TPREL16_HIGHER
:
2384 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
2385 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
2386 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
2387 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
2388 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
2389 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
2390 case elfcpp::R_PPC64_TPREL16_DS
:
2391 case elfcpp::R_PPC64_TPREL16_LO_DS
:
2392 case elfcpp::R_PPC64_DTPREL16_DS
:
2393 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
2394 case elfcpp::R_PPC64_SECTOFF_DS
:
2395 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
2396 case elfcpp::R_PPC64_TLSGD
:
2397 case elfcpp::R_PPC64_TLSLD
:
2400 case elfcpp::R_POWERPC_GOT16
:
2401 case elfcpp::R_POWERPC_GOT16_LO
:
2402 case elfcpp::R_POWERPC_GOT16_HI
:
2403 case elfcpp::R_POWERPC_GOT16_HA
:
2404 case elfcpp::R_PPC64_GOT16_DS
:
2405 case elfcpp::R_PPC64_GOT16_LO_DS
:
2407 // The symbol requires a GOT entry.
2408 Output_data_got_powerpc
<size
, big_endian
>* got
2409 = target
->got_section(symtab
, layout
);
2410 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
2412 // If we are generating a shared object, we need to add a
2413 // dynamic relocation for this symbol's GOT entry.
2414 if (parameters
->options().output_is_position_independent())
2416 if (!object
->local_has_got_offset(r_sym
, GOT_TYPE_STANDARD
))
2418 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
2421 off
= got
->add_constant(0);
2422 object
->set_local_got_offset(r_sym
, GOT_TYPE_STANDARD
, off
);
2423 rela_dyn
->add_local_relative(object
, r_sym
,
2424 elfcpp::R_POWERPC_RELATIVE
,
2425 got
, off
, 0, false);
2429 got
->add_local(object
, r_sym
, GOT_TYPE_STANDARD
);
2433 case elfcpp::R_PPC64_TOC16
:
2434 case elfcpp::R_PPC64_TOC16_LO
:
2435 case elfcpp::R_PPC64_TOC16_HI
:
2436 case elfcpp::R_PPC64_TOC16_HA
:
2437 case elfcpp::R_PPC64_TOC16_DS
:
2438 case elfcpp::R_PPC64_TOC16_LO_DS
:
2439 // We need a GOT section.
2440 target
->got_section(symtab
, layout
);
2443 case elfcpp::R_POWERPC_GOT_TLSGD16
:
2444 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
2445 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
2446 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
2448 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(true);
2449 if (tls_type
== tls::TLSOPT_NONE
)
2451 Output_data_got_powerpc
<size
, big_endian
>* got
2452 = target
->got_section(symtab
, layout
);
2453 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
2454 unsigned int shndx
= lsym
.get_st_shndx();
2456 shndx
= object
->adjust_sym_shndx(r_sym
, shndx
, &is_ordinary
);
2457 gold_assert(is_ordinary
);
2458 got
->add_local_pair_with_rel(object
, r_sym
,
2461 target
->rela_dyn_section(layout
),
2462 elfcpp::R_POWERPC_DTPMOD
,
2463 elfcpp::R_POWERPC_DTPREL
);
2465 else if (tls_type
== tls::TLSOPT_TO_LE
)
2467 // no GOT relocs needed for Local Exec.
2474 case elfcpp::R_POWERPC_GOT_TLSLD16
:
2475 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
2476 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
2477 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
2479 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
2480 if (tls_type
== tls::TLSOPT_NONE
)
2481 target
->tlsld_got_offset(symtab
, layout
, object
);
2482 else if (tls_type
== tls::TLSOPT_TO_LE
)
2484 // no GOT relocs needed for Local Exec.
2491 case elfcpp::R_POWERPC_GOT_DTPREL16
:
2492 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
2493 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
2494 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
2496 Output_data_got_powerpc
<size
, big_endian
>* got
2497 = target
->got_section(symtab
, layout
);
2498 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
2499 got
->add_local_with_rel(object
, r_sym
, GOT_TYPE_DTPREL
,
2500 target
->rela_dyn_section(layout
),
2501 elfcpp::R_POWERPC_DTPREL
);
2505 case elfcpp::R_POWERPC_GOT_TPREL16
:
2506 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
2507 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
2508 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
2510 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(true);
2511 if (tls_type
== tls::TLSOPT_NONE
)
2513 Output_data_got_powerpc
<size
, big_endian
>* got
2514 = target
->got_section(symtab
, layout
);
2515 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(reloc
.get_r_info());
2516 got
->add_local_with_rel(object
, r_sym
, GOT_TYPE_TPREL
,
2517 target
->rela_dyn_section(layout
),
2518 elfcpp::R_POWERPC_TPREL
);
2520 else if (tls_type
== tls::TLSOPT_TO_LE
)
2522 // no GOT relocs needed for Local Exec.
2530 unsupported_reloc_local(object
, r_type
);
2535 // Report an unsupported relocation against a global symbol.
2537 template<int size
, bool big_endian
>
2539 Target_powerpc
<size
, big_endian
>::Scan::unsupported_reloc_global(
2540 Sized_relobj_file
<size
, big_endian
>* object
,
2541 unsigned int r_type
,
2544 gold_error(_("%s: unsupported reloc %u against global symbol %s"),
2545 object
->name().c_str(), r_type
, gsym
->demangled_name().c_str());
2548 // Scan a relocation for a global symbol.
2550 template<int size
, bool big_endian
>
2552 Target_powerpc
<size
, big_endian
>::Scan::global(
2553 Symbol_table
* symtab
,
2555 Target_powerpc
<size
, big_endian
>* target
,
2556 Sized_relobj_file
<size
, big_endian
>* object
,
2557 unsigned int data_shndx
,
2558 Output_section
* output_section
,
2559 const elfcpp::Rela
<size
, big_endian
>& reloc
,
2560 unsigned int r_type
,
2563 Powerpc_relobj
<size
, big_endian
>* ppc_object
2564 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(object
);
2568 case elfcpp::R_POWERPC_NONE
:
2569 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
2570 case elfcpp::R_POWERPC_GNU_VTENTRY
:
2571 case elfcpp::R_PPC_LOCAL24PC
:
2572 case elfcpp::R_PPC_EMB_MRKREF
:
2575 case elfcpp::R_PPC64_TOC
:
2577 Output_data_got_powerpc
<size
, big_endian
>* got
2578 = target
->got_section(symtab
, layout
);
2579 if (parameters
->options().output_is_position_independent())
2581 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
2582 Powerpc_relobj
<size
, big_endian
>* symobj
= ppc_object
;
2583 if (data_shndx
!= ppc_object
->opd_shndx())
2584 symobj
= static_cast
2585 <Powerpc_relobj
<size
, big_endian
>*>(gsym
->object());
2586 rela_dyn
->add_output_section_relative(got
->output_section(),
2587 elfcpp::R_POWERPC_RELATIVE
,
2590 reloc
.get_r_offset(),
2591 symobj
->toc_base_offset());
2596 case elfcpp::R_PPC64_ADDR64
:
2597 case elfcpp::R_PPC64_UADDR64
:
2598 case elfcpp::R_POWERPC_ADDR32
:
2599 case elfcpp::R_POWERPC_UADDR32
:
2600 case elfcpp::R_POWERPC_ADDR24
:
2601 case elfcpp::R_POWERPC_ADDR16
:
2602 case elfcpp::R_POWERPC_ADDR16_LO
:
2603 case elfcpp::R_POWERPC_ADDR16_HI
:
2604 case elfcpp::R_POWERPC_ADDR16_HA
:
2605 case elfcpp::R_POWERPC_UADDR16
:
2606 case elfcpp::R_PPC64_ADDR16_HIGHER
:
2607 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
2608 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
2609 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
2610 case elfcpp::R_PPC64_ADDR16_DS
:
2611 case elfcpp::R_PPC64_ADDR16_LO_DS
:
2612 case elfcpp::R_POWERPC_ADDR14
:
2613 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
2614 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
2616 // Make a PLT entry if necessary.
2617 if (gsym
->needs_plt_entry())
2619 target
->make_plt_entry(layout
, gsym
, reloc
, 0);
2620 // Since this is not a PC-relative relocation, we may be
2621 // taking the address of a function. In that case we need to
2622 // set the entry in the dynamic symbol table to the address of
2625 && gsym
->is_from_dynobj() && !parameters
->options().shared())
2626 gsym
->set_needs_dynsym_value();
2628 // Make a dynamic relocation if necessary.
2629 if (needs_dynamic_reloc
<size
>(gsym
, Scan::get_reference_flags(r_type
)))
2631 if (gsym
->may_need_copy_reloc())
2633 target
->copy_reloc(symtab
, layout
, object
,
2634 data_shndx
, output_section
, gsym
, reloc
);
2636 else if (((size
== 32 && r_type
== elfcpp::R_POWERPC_ADDR32
)
2637 || (size
== 64 && r_type
== elfcpp::R_PPC64_ADDR64
))
2638 && (gsym
->can_use_relative_reloc(false)
2639 || data_shndx
== ppc_object
->opd_shndx()))
2641 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
2642 rela_dyn
->add_global_relative(gsym
, elfcpp::R_POWERPC_RELATIVE
,
2643 output_section
, object
,
2644 data_shndx
, reloc
.get_r_offset(),
2645 reloc
.get_r_addend(), false);
2649 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
2650 check_non_pic(object
, r_type
);
2651 rela_dyn
->add_global(gsym
, r_type
, output_section
,
2653 reloc
.get_r_offset(),
2654 reloc
.get_r_addend());
2660 case elfcpp::R_PPC_PLTREL24
:
2661 case elfcpp::R_POWERPC_REL24
:
2663 if (gsym
->needs_plt_entry()
2664 || (!gsym
->final_value_is_known()
2665 && !(gsym
->is_defined()
2666 && !gsym
->is_from_dynobj()
2667 && !gsym
->is_preemptible())))
2668 target
->make_plt_entry(layout
, gsym
, reloc
, object
);
2669 // Make a dynamic relocation if necessary.
2670 if (needs_dynamic_reloc
<size
>(gsym
, Scan::get_reference_flags(r_type
)))
2672 if (gsym
->may_need_copy_reloc())
2674 target
->copy_reloc(symtab
, layout
, object
,
2675 data_shndx
, output_section
, gsym
,
2680 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
2681 check_non_pic(object
, r_type
);
2682 rela_dyn
->add_global(gsym
, r_type
, output_section
, object
,
2683 data_shndx
, reloc
.get_r_offset(),
2684 reloc
.get_r_addend());
2690 case elfcpp::R_POWERPC_REL32
:
2691 case elfcpp::R_POWERPC_REL16
:
2692 case elfcpp::R_POWERPC_REL16_LO
:
2693 case elfcpp::R_POWERPC_REL16_HI
:
2694 case elfcpp::R_POWERPC_REL16_HA
:
2695 case elfcpp::R_POWERPC_REL14
:
2696 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
2697 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
2698 case elfcpp::R_POWERPC_SECTOFF
:
2699 case elfcpp::R_POWERPC_TPREL16
:
2700 case elfcpp::R_POWERPC_DTPREL16
:
2701 case elfcpp::R_POWERPC_SECTOFF_LO
:
2702 case elfcpp::R_POWERPC_TPREL16_LO
:
2703 case elfcpp::R_POWERPC_DTPREL16_LO
:
2704 case elfcpp::R_POWERPC_SECTOFF_HI
:
2705 case elfcpp::R_POWERPC_TPREL16_HI
:
2706 case elfcpp::R_POWERPC_DTPREL16_HI
:
2707 case elfcpp::R_POWERPC_SECTOFF_HA
:
2708 case elfcpp::R_POWERPC_TPREL16_HA
:
2709 case elfcpp::R_POWERPC_DTPREL16_HA
:
2710 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
2711 case elfcpp::R_PPC64_TPREL16_HIGHER
:
2712 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
2713 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
2714 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
2715 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
2716 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
2717 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
2718 case elfcpp::R_PPC64_TPREL16_DS
:
2719 case elfcpp::R_PPC64_TPREL16_LO_DS
:
2720 case elfcpp::R_PPC64_DTPREL16_DS
:
2721 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
2722 case elfcpp::R_PPC64_SECTOFF_DS
:
2723 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
2724 case elfcpp::R_PPC64_TLSGD
:
2725 case elfcpp::R_PPC64_TLSLD
:
2728 case elfcpp::R_POWERPC_GOT16
:
2729 case elfcpp::R_POWERPC_GOT16_LO
:
2730 case elfcpp::R_POWERPC_GOT16_HI
:
2731 case elfcpp::R_POWERPC_GOT16_HA
:
2732 case elfcpp::R_PPC64_GOT16_DS
:
2733 case elfcpp::R_PPC64_GOT16_LO_DS
:
2735 // The symbol requires a GOT entry.
2736 Output_data_got_powerpc
<size
, big_endian
>* got
;
2738 got
= target
->got_section(symtab
, layout
);
2739 if (gsym
->final_value_is_known())
2740 got
->add_global(gsym
, GOT_TYPE_STANDARD
);
2743 // If this symbol is not fully resolved, we need to add a
2744 // dynamic relocation for it.
2745 Reloc_section
* rela_dyn
= target
->rela_dyn_section(layout
);
2746 if (gsym
->is_from_dynobj()
2747 || gsym
->is_undefined()
2748 || gsym
->is_preemptible())
2749 got
->add_global_with_rel(gsym
, GOT_TYPE_STANDARD
, rela_dyn
,
2750 elfcpp::R_POWERPC_GLOB_DAT
);
2751 else if (!gsym
->has_got_offset(GOT_TYPE_STANDARD
))
2753 unsigned int off
= got
->add_constant(0);
2755 gsym
->set_got_offset(GOT_TYPE_STANDARD
, off
);
2756 rela_dyn
->add_global_relative(gsym
, elfcpp::R_POWERPC_RELATIVE
,
2757 got
, off
, 0, false);
2763 case elfcpp::R_PPC64_TOC16
:
2764 case elfcpp::R_PPC64_TOC16_LO
:
2765 case elfcpp::R_PPC64_TOC16_HI
:
2766 case elfcpp::R_PPC64_TOC16_HA
:
2767 case elfcpp::R_PPC64_TOC16_DS
:
2768 case elfcpp::R_PPC64_TOC16_LO_DS
:
2769 // We need a GOT section.
2770 target
->got_section(symtab
, layout
);
2773 case elfcpp::R_POWERPC_GOT_TLSGD16
:
2774 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
2775 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
2776 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
2778 const bool final
= gsym
->final_value_is_known();
2779 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
2780 if (tls_type
== tls::TLSOPT_NONE
)
2782 Output_data_got_powerpc
<size
, big_endian
>* got
2783 = target
->got_section(symtab
, layout
);
2784 got
->add_global_pair_with_rel(gsym
, GOT_TYPE_TLSGD
,
2785 target
->rela_dyn_section(layout
),
2786 elfcpp::R_POWERPC_DTPMOD
,
2787 elfcpp::R_POWERPC_DTPREL
);
2789 else if (tls_type
== tls::TLSOPT_TO_IE
)
2791 Output_data_got_powerpc
<size
, big_endian
>* got
2792 = target
->got_section(symtab
, layout
);
2793 got
->add_global_with_rel(gsym
, GOT_TYPE_TPREL
,
2794 target
->rela_dyn_section(layout
),
2795 elfcpp::R_POWERPC_TPREL
);
2797 else if (tls_type
== tls::TLSOPT_TO_LE
)
2799 // no GOT relocs needed for Local Exec.
2806 case elfcpp::R_POWERPC_GOT_TLSLD16
:
2807 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
2808 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
2809 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
2811 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
2812 if (tls_type
== tls::TLSOPT_NONE
)
2813 target
->tlsld_got_offset(symtab
, layout
, object
);
2814 else if (tls_type
== tls::TLSOPT_TO_LE
)
2816 // no GOT relocs needed for Local Exec.
2823 case elfcpp::R_POWERPC_GOT_DTPREL16
:
2824 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
2825 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
2826 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
2828 Output_data_got_powerpc
<size
, big_endian
>* got
2829 = target
->got_section(symtab
, layout
);
2830 got
->add_global_with_rel(gsym
, GOT_TYPE_DTPREL
,
2831 target
->rela_dyn_section(layout
),
2832 elfcpp::R_POWERPC_DTPREL
);
2836 case elfcpp::R_POWERPC_GOT_TPREL16
:
2837 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
2838 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
2839 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
2841 const bool final
= gsym
->final_value_is_known();
2842 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
2843 if (tls_type
== tls::TLSOPT_NONE
)
2845 Output_data_got_powerpc
<size
, big_endian
>* got
2846 = target
->got_section(symtab
, layout
);
2847 got
->add_global_with_rel(gsym
, GOT_TYPE_TPREL
,
2848 target
->rela_dyn_section(layout
),
2849 elfcpp::R_POWERPC_TPREL
);
2851 else if (tls_type
== tls::TLSOPT_TO_LE
)
2853 // no GOT relocs needed for Local Exec.
2861 unsupported_reloc_global(object
, r_type
, gsym
);
2866 // Process relocations for gc.
2868 template<int size
, bool big_endian
>
2870 Target_powerpc
<size
, big_endian
>::gc_process_relocs(
2871 Symbol_table
* symtab
,
2873 Sized_relobj_file
<size
, big_endian
>* object
,
2874 unsigned int data_shndx
,
2876 const unsigned char* prelocs
,
2878 Output_section
* output_section
,
2879 bool needs_special_offset_handling
,
2880 size_t local_symbol_count
,
2881 const unsigned char* plocal_symbols
)
2883 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
2884 typedef typename Target_powerpc
<size
, big_endian
>::Scan Scan
;
2886 gold::gc_process_relocs
<size
, big_endian
, Powerpc
, elfcpp::SHT_RELA
, Scan
,
2887 typename
Target_powerpc::Relocatable_size_for_reloc
>(
2896 needs_special_offset_handling
,
2901 // Scan relocations for a section.
2903 template<int size
, bool big_endian
>
2905 Target_powerpc
<size
, big_endian
>::scan_relocs(
2906 Symbol_table
* symtab
,
2908 Sized_relobj_file
<size
, big_endian
>* object
,
2909 unsigned int data_shndx
,
2910 unsigned int sh_type
,
2911 const unsigned char* prelocs
,
2913 Output_section
* output_section
,
2914 bool needs_special_offset_handling
,
2915 size_t local_symbol_count
,
2916 const unsigned char* plocal_symbols
)
2918 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
2919 typedef typename Target_powerpc
<size
, big_endian
>::Scan Scan
;
2921 if (sh_type
== elfcpp::SHT_REL
)
2923 gold_error(_("%s: unsupported REL reloc section"),
2924 object
->name().c_str());
2930 static Output_data_space
* sdata
;
2932 // Define _SDA_BASE_ at the start of the .sdata section.
2935 // layout->find_output_section(".sdata") == NULL
2936 sdata
= new Output_data_space(4, "** sdata");
2938 = layout
->add_output_section_data(".sdata", 0,
2940 | elfcpp::SHF_WRITE
,
2941 sdata
, ORDER_SMALL_DATA
, false);
2942 symtab
->define_in_output_data("_SDA_BASE_", NULL
,
2943 Symbol_table::PREDEFINED
,
2944 os
, 32768, 0, elfcpp::STT_OBJECT
,
2945 elfcpp::STB_LOCAL
, elfcpp::STV_HIDDEN
,
2950 gold::scan_relocs
<size
, big_endian
, Powerpc
, elfcpp::SHT_RELA
, Scan
>(
2959 needs_special_offset_handling
,
2964 // Finalize the sections.
2966 template<int size
, bool big_endian
>
2968 Target_powerpc
<size
, big_endian
>::do_finalize_sections(
2970 const Input_objects
*,
2973 // Fill in some more dynamic tags.
2974 const Reloc_section
* rel_plt
= (this->plt_
== NULL
2976 : this->plt_
->rel_plt());
2977 layout
->add_target_dynamic_tags(false, this->plt_
, rel_plt
,
2978 this->rela_dyn_
, true, size
== 32);
2980 Output_data_dynamic
* odyn
= layout
->dynamic_data();
2983 if (this->got_
!= NULL
)
2985 this->got_
->finalize_data_size();
2986 odyn
->add_section_plus_offset(elfcpp::DT_PPC_GOT
,
2987 this->got_
, this->got_
->g_o_t());
2992 if (this->glink_
!= NULL
)
2994 this->glink_
->finalize_data_size();
2995 odyn
->add_section_plus_offset(elfcpp::DT_PPC64_GLINK
,
2997 (this->glink_
->pltresolve()
2998 + this->glink_
->pltresolve_size
- 32));
3002 // Emit any relocs we saved in an attempt to avoid generating COPY
3004 if (this->copy_relocs_
.any_saved_relocs())
3005 this->copy_relocs_
.emit(this->rela_dyn_section(layout
));
3008 // Perform a relocation.
3010 template<int size
, bool big_endian
>
3012 Target_powerpc
<size
, big_endian
>::Relocate::relocate(
3013 const Relocate_info
<size
, big_endian
>* relinfo
,
3014 Target_powerpc
* target
,
3017 const elfcpp::Rela
<size
, big_endian
>& rela
,
3018 unsigned int r_type
,
3019 const Sized_symbol
<size
>* gsym
,
3020 const Symbol_value
<size
>* psymval
,
3021 unsigned char* view
,
3023 section_size_type view_size
)
3026 bool is_tls_call
= ((r_type
== elfcpp::R_POWERPC_REL24
3027 || r_type
== elfcpp::R_PPC_PLTREL24
)
3029 && strcmp(gsym
->name(), "__tls_get_addr") == 0);
3030 enum skip_tls last_tls
= this->call_tls_get_addr_
;
3031 this->call_tls_get_addr_
= CALL_NOT_EXPECTED
;
3034 if (last_tls
== CALL_NOT_EXPECTED
)
3035 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
3036 _("__tls_get_addr call lacks marker reloc"));
3037 else if (last_tls
== CALL_SKIP
)
3040 else if (last_tls
!= CALL_NOT_EXPECTED
)
3041 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
3042 _("missing expected __tls_get_addr call"));
3044 typedef Powerpc_relocate_functions
<size
, big_endian
> Reloc
;
3045 typedef typename
elfcpp::Swap
<32, big_endian
>::Valtype Insn
;
3046 const Powerpc_relobj
<size
, big_endian
>* const object
3047 = static_cast<const Powerpc_relobj
<size
, big_endian
>*>(relinfo
->object
);
3049 bool has_plt_value
= false;
3051 && use_plt_offset
<size
>(gsym
, Scan::get_reference_flags(r_type
)))
3053 const Output_data_glink
<size
, big_endian
>* glink
3054 = target
->glink_section();
3055 unsigned int glink_index
= glink
->find_entry(gsym
, rela
, object
);
3056 value
= glink
->address() + glink_index
* glink
->glink_entry_size();
3057 has_plt_value
= true;
3060 if (r_type
== elfcpp::R_POWERPC_GOT16
3061 || r_type
== elfcpp::R_POWERPC_GOT16_LO
3062 || r_type
== elfcpp::R_POWERPC_GOT16_HI
3063 || r_type
== elfcpp::R_POWERPC_GOT16_HA
3064 || r_type
== elfcpp::R_PPC64_GOT16_DS
3065 || r_type
== elfcpp::R_PPC64_GOT16_LO_DS
)
3069 gold_assert(gsym
->has_got_offset(GOT_TYPE_STANDARD
));
3070 value
= gsym
->got_offset(GOT_TYPE_STANDARD
);
3074 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
3075 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_STANDARD
));
3076 value
= object
->local_got_offset(r_sym
, GOT_TYPE_STANDARD
);
3078 value
-= target
->got_section()->got_base_offset(object
);
3080 else if (r_type
== elfcpp::R_PPC64_TOC
)
3082 value
= (target
->got_section()->output_section()->address()
3083 + object
->toc_base_offset());
3085 else if (gsym
!= NULL
3086 && (r_type
== elfcpp::R_POWERPC_REL24
3087 || r_type
== elfcpp::R_PPC_PLTREL24
)
3092 typedef typename
elfcpp::Swap
<32, big_endian
>::Valtype Valtype
;
3093 Valtype
* wv
= reinterpret_cast<Valtype
*>(view
);
3094 bool can_plt_call
= false;
3095 if (rela
.get_r_offset() + 8 <= view_size
)
3097 Valtype insn2
= elfcpp::Swap
<32, big_endian
>::readval(wv
+ 1);
3099 || insn2
== cror_15_15_15
|| insn2
== cror_31_31_31
)
3101 elfcpp::Swap
<32, big_endian
>::writeval(wv
+ 1, ld_2_1
+ 40);
3102 can_plt_call
= true;
3106 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
3107 _("call lacks nop, can't restore toc"));
3110 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
3111 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
3112 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HI
3113 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_HA
)
3115 // First instruction of a global dynamic sequence, arg setup insn.
3116 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
3117 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
3118 enum Got_type got_type
= GOT_TYPE_STANDARD
;
3119 if (tls_type
== tls::TLSOPT_NONE
)
3120 got_type
= GOT_TYPE_TLSGD
;
3121 else if (tls_type
== tls::TLSOPT_TO_IE
)
3122 got_type
= GOT_TYPE_TPREL
;
3123 if (got_type
!= GOT_TYPE_STANDARD
)
3127 gold_assert(gsym
->has_got_offset(got_type
));
3128 value
= gsym
->got_offset(got_type
);
3132 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
3133 gold_assert(object
->local_has_got_offset(r_sym
, got_type
));
3134 value
= object
->local_got_offset(r_sym
, got_type
);
3136 value
-= target
->got_section()->got_base_offset(object
);
3138 if (tls_type
== tls::TLSOPT_TO_IE
)
3140 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
3141 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
3143 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
3144 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
3145 insn
&= (1 << 26) - (1 << 16); // extract rt,ra from addi
3147 insn
|= 32 << 26; // lwz
3149 insn
|= 58 << 26; // ld
3150 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
3152 r_type
+= (elfcpp::R_POWERPC_GOT_TPREL16
3153 - elfcpp::R_POWERPC_GOT_TLSGD16
);
3155 else if (tls_type
== tls::TLSOPT_TO_LE
)
3157 if (r_type
== elfcpp::R_POWERPC_GOT_TLSGD16
3158 || r_type
== elfcpp::R_POWERPC_GOT_TLSGD16_LO
)
3160 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
3161 Insn insn
= addis_3_13
;
3164 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
3165 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
3166 value
= psymval
->value(object
, rela
.get_r_addend());
3170 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
3172 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
3173 r_type
= elfcpp::R_POWERPC_NONE
;
3177 else if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
3178 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
3179 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HI
3180 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_HA
)
3182 // First instruction of a local dynamic sequence, arg setup insn.
3183 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
3184 if (tls_type
== tls::TLSOPT_NONE
)
3186 value
= target
->tlsld_got_offset();
3187 value
-= target
->got_section()->got_base_offset(object
);
3191 gold_assert(tls_type
== tls::TLSOPT_TO_LE
);
3192 if (r_type
== elfcpp::R_POWERPC_GOT_TLSLD16
3193 || r_type
== elfcpp::R_POWERPC_GOT_TLSLD16_LO
)
3195 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
3196 Insn insn
= addis_3_13
;
3199 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
3200 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
3201 value
= relinfo
->layout
->tls_segment()->vaddr() + dtp_offset
;
3205 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
3207 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
3208 r_type
= elfcpp::R_POWERPC_NONE
;
3212 else if (r_type
== elfcpp::R_POWERPC_GOT_DTPREL16
3213 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_LO
3214 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_HI
3215 || r_type
== elfcpp::R_POWERPC_GOT_DTPREL16_HA
)
3217 // Accesses relative to a local dynamic sequence address,
3218 // no optimisation here.
3221 gold_assert(gsym
->has_got_offset(GOT_TYPE_DTPREL
));
3222 value
= gsym
->got_offset(GOT_TYPE_DTPREL
);
3226 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
3227 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_DTPREL
));
3228 value
= object
->local_got_offset(r_sym
, GOT_TYPE_DTPREL
);
3230 value
-= target
->got_section()->got_base_offset(object
);
3232 else if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
3233 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
3234 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HI
3235 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_HA
)
3237 // First instruction of initial exec sequence.
3238 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
3239 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
3240 if (tls_type
== tls::TLSOPT_NONE
)
3244 gold_assert(gsym
->has_got_offset(GOT_TYPE_TPREL
));
3245 value
= gsym
->got_offset(GOT_TYPE_TPREL
);
3249 unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(rela
.get_r_info());
3250 gold_assert(object
->local_has_got_offset(r_sym
, GOT_TYPE_TPREL
));
3251 value
= object
->local_got_offset(r_sym
, GOT_TYPE_TPREL
);
3253 value
-= target
->got_section()->got_base_offset(object
);
3257 gold_assert(tls_type
== tls::TLSOPT_TO_LE
);
3258 if (r_type
== elfcpp::R_POWERPC_GOT_TPREL16
3259 || r_type
== elfcpp::R_POWERPC_GOT_TPREL16_LO
)
3261 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
3262 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
3263 insn
&= (1 << 26) - (1 << 21); // extract rt from ld
3268 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
3269 r_type
= elfcpp::R_POWERPC_TPREL16_HA
;
3270 value
= psymval
->value(object
, rela
.get_r_addend());
3274 Insn
* iview
= reinterpret_cast<Insn
*>(view
- 2 * big_endian
);
3276 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
3277 r_type
= elfcpp::R_POWERPC_NONE
;
3281 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSGD
)
3282 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSGD
))
3284 // Second instruction of a global dynamic sequence,
3285 // the __tls_get_addr call
3286 this->call_tls_get_addr_
= CALL_EXPECTED
;
3287 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
3288 const tls::Tls_optimization tls_type
= target
->optimize_tls_gd(final
);
3289 if (tls_type
!= tls::TLSOPT_NONE
)
3291 if (tls_type
== tls::TLSOPT_TO_IE
)
3293 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
3294 Insn insn
= add_3_3_13
;
3297 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
3298 r_type
= elfcpp::R_POWERPC_NONE
;
3302 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
3303 Insn insn
= addi_3_3
;
3304 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
3305 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
3306 view
+= 2 * big_endian
;
3307 value
= psymval
->value(object
, rela
.get_r_addend());
3309 this->call_tls_get_addr_
= CALL_SKIP
;
3312 else if ((size
== 64 && r_type
== elfcpp::R_PPC64_TLSLD
)
3313 || (size
== 32 && r_type
== elfcpp::R_PPC_TLSLD
))
3315 // Second instruction of a local dynamic sequence,
3316 // the __tls_get_addr call
3317 this->call_tls_get_addr_
= CALL_EXPECTED
;
3318 const tls::Tls_optimization tls_type
= target
->optimize_tls_ld();
3319 if (tls_type
== tls::TLSOPT_TO_LE
)
3321 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
3322 Insn insn
= addi_3_3
;
3323 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
3324 this->call_tls_get_addr_
= CALL_SKIP
;
3325 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
3326 view
+= 2 * big_endian
;
3327 value
= relinfo
->layout
->tls_segment()->vaddr() + dtp_offset
;
3330 else if (r_type
== elfcpp::R_POWERPC_TLS
)
3332 // Second instruction of an initial exec sequence
3333 const bool final
= gsym
== NULL
|| gsym
->final_value_is_known();
3334 const tls::Tls_optimization tls_type
= target
->optimize_tls_ie(final
);
3335 if (tls_type
== tls::TLSOPT_TO_LE
)
3337 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
3338 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
3339 unsigned int reg
= size
== 32 ? 2 : 13;
3340 insn
= at_tls_transform(insn
, reg
);
3341 gold_assert(insn
!= 0);
3342 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
3343 r_type
= elfcpp::R_POWERPC_TPREL16_LO
;
3344 view
+= 2 * big_endian
;
3345 value
= psymval
->value(object
, rela
.get_r_addend());
3351 if (r_type
!= elfcpp::R_PPC_PLTREL24
)
3352 addend
= rela
.get_r_addend();
3353 if (size
== 64 || !has_plt_value
)
3354 value
= psymval
->value(object
, addend
);
3355 if (size
== 64 && is_branch_reloc(r_type
))
3357 // If the symbol is defined in an opd section, ie. is a function
3358 // descriptor, use the function descriptor code entry address
3359 Powerpc_relobj
<size
, big_endian
>* symobj
= const_cast
3360 <Powerpc_relobj
<size
, big_endian
>*>(object
);
3362 symobj
= static_cast
3363 <Powerpc_relobj
<size
, big_endian
>*>(gsym
->object());
3364 unsigned int shndx
= symobj
->opd_shndx();
3365 Address opd_addr
= symobj
->get_output_section_offset(shndx
);
3366 gold_assert(opd_addr
!= invalid_address
);
3367 opd_addr
+= symobj
->output_section(shndx
)->address();
3368 if (value
>= opd_addr
3369 && value
< opd_addr
+ symobj
->section_size(shndx
))
3372 symobj
->get_opd_ent(value
- opd_addr
, &shndx
, &sec_off
);
3373 Address sec_addr
= symobj
->get_output_section_offset(shndx
);
3374 gold_assert(sec_addr
!= invalid_address
);
3375 sec_addr
+= symobj
->output_section(shndx
)->address();
3376 value
= sec_addr
+ sec_off
;
3383 case elfcpp::R_PPC64_REL64
:
3384 case elfcpp::R_POWERPC_REL32
:
3385 case elfcpp::R_POWERPC_REL24
:
3386 case elfcpp::R_PPC_PLTREL24
:
3387 case elfcpp::R_PPC_LOCAL24PC
:
3388 case elfcpp::R_POWERPC_REL16
:
3389 case elfcpp::R_POWERPC_REL16_LO
:
3390 case elfcpp::R_POWERPC_REL16_HI
:
3391 case elfcpp::R_POWERPC_REL16_HA
:
3392 case elfcpp::R_POWERPC_REL14
:
3393 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
3394 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
3398 case elfcpp::R_PPC64_TOC16
:
3399 case elfcpp::R_PPC64_TOC16_LO
:
3400 case elfcpp::R_PPC64_TOC16_HI
:
3401 case elfcpp::R_PPC64_TOC16_HA
:
3402 case elfcpp::R_PPC64_TOC16_DS
:
3403 case elfcpp::R_PPC64_TOC16_LO_DS
:
3404 // Subtract the TOC base address.
3405 value
-= (target
->got_section()->output_section()->address()
3406 + object
->toc_base_offset());
3409 case elfcpp::R_POWERPC_SECTOFF
:
3410 case elfcpp::R_POWERPC_SECTOFF_LO
:
3411 case elfcpp::R_POWERPC_SECTOFF_HI
:
3412 case elfcpp::R_POWERPC_SECTOFF_HA
:
3413 case elfcpp::R_PPC64_SECTOFF_DS
:
3414 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
3416 value
-= os
->address();
3419 case elfcpp::R_PPC64_TPREL16_DS
:
3420 case elfcpp::R_PPC64_TPREL16_LO_DS
:
3422 // R_PPC_TLSGD and R_PPC_TLSLD
3424 case elfcpp::R_POWERPC_TPREL16
:
3425 case elfcpp::R_POWERPC_TPREL16_LO
:
3426 case elfcpp::R_POWERPC_TPREL16_HI
:
3427 case elfcpp::R_POWERPC_TPREL16_HA
:
3428 case elfcpp::R_POWERPC_TPREL
:
3429 case elfcpp::R_PPC64_TPREL16_HIGHER
:
3430 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
3431 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
3432 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
3433 // tls symbol values are relative to tls_segment()->vaddr()
3437 case elfcpp::R_PPC64_DTPREL16_DS
:
3438 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
3439 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
3440 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
3441 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
3442 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
3444 // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO
3445 // R_PPC_EMB_NADDR16_HI, R_PPC_EMB_NADDR16_HA, R_PPC_EMB_SDAI16
3447 case elfcpp::R_POWERPC_DTPREL16
:
3448 case elfcpp::R_POWERPC_DTPREL16_LO
:
3449 case elfcpp::R_POWERPC_DTPREL16_HI
:
3450 case elfcpp::R_POWERPC_DTPREL16_HA
:
3451 case elfcpp::R_POWERPC_DTPREL
:
3452 // tls symbol values are relative to tls_segment()->vaddr()
3453 value
-= dtp_offset
;
3460 Insn branch_bit
= 0;
3463 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
3464 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
3465 branch_bit
= 1 << 21;
3466 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
3467 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
3469 Insn
* iview
= reinterpret_cast<Insn
*>(view
);
3470 Insn insn
= elfcpp::Swap
<32, big_endian
>::readval(iview
);
3473 if (this->is_isa_v2
)
3475 // Set 'a' bit. This is 0b00010 in BO field for branch
3476 // on CR(BI) insns (BO == 001at or 011at), and 0b01000
3477 // for branch on CTR insns (BO == 1a00t or 1a01t).
3478 if ((insn
& (0x14 << 21)) == (0x04 << 21))
3480 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
3487 // Invert 'y' bit if not the default.
3488 if (static_cast<Signed_address
>(value
) < 0)
3491 elfcpp::Swap
<32, big_endian
>::writeval(iview
, insn
);
3499 enum Reloc::overflow_check overflow
= Reloc::check_none
;
3502 case elfcpp::R_POWERPC_ADDR32
:
3503 case elfcpp::R_POWERPC_UADDR32
:
3505 overflow
= Reloc::check_bitfield
;
3508 case elfcpp::R_POWERPC_REL32
:
3510 overflow
= Reloc::check_signed
;
3513 case elfcpp::R_POWERPC_ADDR24
:
3514 case elfcpp::R_POWERPC_ADDR16
:
3515 case elfcpp::R_POWERPC_UADDR16
:
3516 case elfcpp::R_PPC64_ADDR16_DS
:
3517 case elfcpp::R_POWERPC_ADDR14
:
3518 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
3519 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
3520 overflow
= Reloc::check_bitfield
;
3523 case elfcpp::R_POWERPC_REL24
:
3524 case elfcpp::R_PPC_PLTREL24
:
3525 case elfcpp::R_PPC_LOCAL24PC
:
3526 case elfcpp::R_POWERPC_REL16
:
3527 case elfcpp::R_PPC64_TOC16
:
3528 case elfcpp::R_POWERPC_GOT16
:
3529 case elfcpp::R_POWERPC_SECTOFF
:
3530 case elfcpp::R_POWERPC_TPREL16
:
3531 case elfcpp::R_POWERPC_DTPREL16
:
3532 case elfcpp::R_PPC64_TPREL16_DS
:
3533 case elfcpp::R_PPC64_DTPREL16_DS
:
3534 case elfcpp::R_PPC64_TOC16_DS
:
3535 case elfcpp::R_PPC64_GOT16_DS
:
3536 case elfcpp::R_PPC64_SECTOFF_DS
:
3537 case elfcpp::R_POWERPC_REL14
:
3538 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
3539 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
3540 case elfcpp::R_POWERPC_GOT_TLSGD16
:
3541 case elfcpp::R_POWERPC_GOT_TLSLD16
:
3542 case elfcpp::R_POWERPC_GOT_TPREL16
:
3543 case elfcpp::R_POWERPC_GOT_DTPREL16
:
3544 overflow
= Reloc::check_signed
;
3550 case elfcpp::R_POWERPC_NONE
:
3551 case elfcpp::R_POWERPC_TLS
:
3552 case elfcpp::R_POWERPC_GNU_VTINHERIT
:
3553 case elfcpp::R_POWERPC_GNU_VTENTRY
:
3554 case elfcpp::R_PPC_EMB_MRKREF
:
3557 case elfcpp::R_PPC64_ADDR64
:
3558 case elfcpp::R_PPC64_REL64
:
3559 case elfcpp::R_PPC64_TOC
:
3560 Reloc::addr64(view
, value
);
3563 case elfcpp::R_POWERPC_TPREL
:
3564 case elfcpp::R_POWERPC_DTPREL
:
3566 Reloc::addr64(view
, value
);
3568 Reloc::addr32(view
, value
, overflow
);
3571 case elfcpp::R_PPC64_UADDR64
:
3572 Reloc::addr64_u(view
, value
);
3575 case elfcpp::R_POWERPC_ADDR32
:
3576 case elfcpp::R_POWERPC_REL32
:
3577 Reloc::addr32(view
, value
, overflow
);
3580 case elfcpp::R_POWERPC_UADDR32
:
3581 Reloc::addr32_u(view
, value
, overflow
);
3584 case elfcpp::R_POWERPC_ADDR24
:
3585 case elfcpp::R_POWERPC_REL24
:
3586 case elfcpp::R_PPC_PLTREL24
:
3587 case elfcpp::R_PPC_LOCAL24PC
:
3588 Reloc::addr24(view
, value
, overflow
);
3591 case elfcpp::R_POWERPC_GOT_DTPREL16
:
3592 case elfcpp::R_POWERPC_GOT_DTPREL16_LO
:
3595 Reloc::addr16_ds(view
, value
, overflow
);
3598 case elfcpp::R_POWERPC_ADDR16
:
3599 case elfcpp::R_POWERPC_REL16
:
3600 case elfcpp::R_PPC64_TOC16
:
3601 case elfcpp::R_POWERPC_GOT16
:
3602 case elfcpp::R_POWERPC_SECTOFF
:
3603 case elfcpp::R_POWERPC_TPREL16
:
3604 case elfcpp::R_POWERPC_DTPREL16
:
3605 case elfcpp::R_POWERPC_GOT_TLSGD16
:
3606 case elfcpp::R_POWERPC_GOT_TLSLD16
:
3607 case elfcpp::R_POWERPC_GOT_TPREL16
:
3608 case elfcpp::R_POWERPC_ADDR16_LO
:
3609 case elfcpp::R_POWERPC_REL16_LO
:
3610 case elfcpp::R_PPC64_TOC16_LO
:
3611 case elfcpp::R_POWERPC_GOT16_LO
:
3612 case elfcpp::R_POWERPC_SECTOFF_LO
:
3613 case elfcpp::R_POWERPC_TPREL16_LO
:
3614 case elfcpp::R_POWERPC_DTPREL16_LO
:
3615 case elfcpp::R_POWERPC_GOT_TLSGD16_LO
:
3616 case elfcpp::R_POWERPC_GOT_TLSLD16_LO
:
3617 case elfcpp::R_POWERPC_GOT_TPREL16_LO
:
3618 Reloc::addr16(view
, value
, overflow
);
3621 case elfcpp::R_POWERPC_UADDR16
:
3622 Reloc::addr16_u(view
, value
, overflow
);
3625 case elfcpp::R_POWERPC_ADDR16_HI
:
3626 case elfcpp::R_POWERPC_REL16_HI
:
3627 case elfcpp::R_PPC64_TOC16_HI
:
3628 case elfcpp::R_POWERPC_GOT16_HI
:
3629 case elfcpp::R_POWERPC_SECTOFF_HI
:
3630 case elfcpp::R_POWERPC_TPREL16_HI
:
3631 case elfcpp::R_POWERPC_DTPREL16_HI
:
3632 case elfcpp::R_POWERPC_GOT_TLSGD16_HI
:
3633 case elfcpp::R_POWERPC_GOT_TLSLD16_HI
:
3634 case elfcpp::R_POWERPC_GOT_TPREL16_HI
:
3635 case elfcpp::R_POWERPC_GOT_DTPREL16_HI
:
3636 Reloc::addr16_hi(view
, value
);
3639 case elfcpp::R_POWERPC_ADDR16_HA
:
3640 case elfcpp::R_POWERPC_REL16_HA
:
3641 case elfcpp::R_PPC64_TOC16_HA
:
3642 case elfcpp::R_POWERPC_GOT16_HA
:
3643 case elfcpp::R_POWERPC_SECTOFF_HA
:
3644 case elfcpp::R_POWERPC_TPREL16_HA
:
3645 case elfcpp::R_POWERPC_DTPREL16_HA
:
3646 case elfcpp::R_POWERPC_GOT_TLSGD16_HA
:
3647 case elfcpp::R_POWERPC_GOT_TLSLD16_HA
:
3648 case elfcpp::R_POWERPC_GOT_TPREL16_HA
:
3649 case elfcpp::R_POWERPC_GOT_DTPREL16_HA
:
3650 Reloc::addr16_ha(view
, value
);
3653 case elfcpp::R_PPC64_DTPREL16_HIGHER
:
3655 // R_PPC_EMB_NADDR16_LO
3657 case elfcpp::R_PPC64_ADDR16_HIGHER
:
3658 case elfcpp::R_PPC64_TPREL16_HIGHER
:
3659 Reloc::addr16_hi2(view
, value
);
3662 case elfcpp::R_PPC64_DTPREL16_HIGHERA
:
3664 // R_PPC_EMB_NADDR16_HI
3666 case elfcpp::R_PPC64_ADDR16_HIGHERA
:
3667 case elfcpp::R_PPC64_TPREL16_HIGHERA
:
3668 Reloc::addr16_ha2(view
, value
);
3671 case elfcpp::R_PPC64_DTPREL16_HIGHEST
:
3673 // R_PPC_EMB_NADDR16_HA
3675 case elfcpp::R_PPC64_ADDR16_HIGHEST
:
3676 case elfcpp::R_PPC64_TPREL16_HIGHEST
:
3677 Reloc::addr16_hi3(view
, value
);
3680 case elfcpp::R_PPC64_DTPREL16_HIGHESTA
:
3684 case elfcpp::R_PPC64_ADDR16_HIGHESTA
:
3685 case elfcpp::R_PPC64_TPREL16_HIGHESTA
:
3686 Reloc::addr16_ha3(view
, value
);
3689 case elfcpp::R_PPC64_DTPREL16_DS
:
3690 case elfcpp::R_PPC64_DTPREL16_LO_DS
:
3692 // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16
3694 case elfcpp::R_PPC64_TPREL16_DS
:
3695 case elfcpp::R_PPC64_TPREL16_LO_DS
:
3697 // R_PPC_TLSGD, R_PPC_TLSLD
3699 case elfcpp::R_PPC64_ADDR16_DS
:
3700 case elfcpp::R_PPC64_ADDR16_LO_DS
:
3701 case elfcpp::R_PPC64_TOC16_DS
:
3702 case elfcpp::R_PPC64_TOC16_LO_DS
:
3703 case elfcpp::R_PPC64_GOT16_DS
:
3704 case elfcpp::R_PPC64_GOT16_LO_DS
:
3705 case elfcpp::R_PPC64_SECTOFF_DS
:
3706 case elfcpp::R_PPC64_SECTOFF_LO_DS
:
3707 Reloc::addr16_ds(view
, value
, overflow
);
3710 case elfcpp::R_POWERPC_ADDR14
:
3711 case elfcpp::R_POWERPC_ADDR14_BRTAKEN
:
3712 case elfcpp::R_POWERPC_ADDR14_BRNTAKEN
:
3713 case elfcpp::R_POWERPC_REL14
:
3714 case elfcpp::R_POWERPC_REL14_BRTAKEN
:
3715 case elfcpp::R_POWERPC_REL14_BRNTAKEN
:
3716 Reloc::addr14(view
, value
, overflow
);
3719 case elfcpp::R_POWERPC_COPY
:
3720 case elfcpp::R_POWERPC_GLOB_DAT
:
3721 case elfcpp::R_POWERPC_JMP_SLOT
:
3722 case elfcpp::R_POWERPC_RELATIVE
:
3723 case elfcpp::R_POWERPC_DTPMOD
:
3724 case elfcpp::R_PPC64_JMP_IREL
:
3725 case elfcpp::R_POWERPC_IRELATIVE
:
3726 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
3727 _("unexpected reloc %u in object file"),
3731 case elfcpp::R_PPC_EMB_SDA21
:
3736 // R_PPC64_TOCSAVE. For the time being this can be ignored.
3740 case elfcpp::R_PPC_EMB_SDA2I16
:
3741 case elfcpp::R_PPC_EMB_SDA2REL
:
3744 // R_PPC64_TLSGD, R_PPC64_TLSLD
3747 case elfcpp::R_POWERPC_PLT32
:
3748 case elfcpp::R_POWERPC_PLTREL32
:
3749 case elfcpp::R_POWERPC_PLT16_LO
:
3750 case elfcpp::R_POWERPC_PLT16_HI
:
3751 case elfcpp::R_POWERPC_PLT16_HA
:
3752 case elfcpp::R_PPC_SDAREL16
:
3753 case elfcpp::R_POWERPC_ADDR30
:
3754 case elfcpp::R_PPC64_PLT64
:
3755 case elfcpp::R_PPC64_PLTREL64
:
3756 case elfcpp::R_PPC64_PLTGOT16
:
3757 case elfcpp::R_PPC64_PLTGOT16_LO
:
3758 case elfcpp::R_PPC64_PLTGOT16_HI
:
3759 case elfcpp::R_PPC64_PLTGOT16_HA
:
3760 case elfcpp::R_PPC64_PLT16_LO_DS
:
3761 case elfcpp::R_PPC64_PLTGOT16_DS
:
3762 case elfcpp::R_PPC64_PLTGOT16_LO_DS
:
3763 case elfcpp::R_PPC_EMB_RELSEC16
:
3764 case elfcpp::R_PPC_EMB_RELST_LO
:
3765 case elfcpp::R_PPC_EMB_RELST_HI
:
3766 case elfcpp::R_PPC_EMB_RELST_HA
:
3767 case elfcpp::R_PPC_EMB_BIT_FLD
:
3768 case elfcpp::R_PPC_EMB_RELSDA
:
3769 case elfcpp::R_PPC_TOC16
:
3772 gold_error_at_location(relinfo
, relnum
, rela
.get_r_offset(),
3773 _("unsupported reloc %u"),
3781 // Relocate section data.
3783 template<int size
, bool big_endian
>
3785 Target_powerpc
<size
, big_endian
>::relocate_section(
3786 const Relocate_info
<size
, big_endian
>* relinfo
,
3787 unsigned int sh_type
,
3788 const unsigned char* prelocs
,
3790 Output_section
* output_section
,
3791 bool needs_special_offset_handling
,
3792 unsigned char* view
,
3794 section_size_type view_size
,
3795 const Reloc_symbol_changes
* reloc_symbol_changes
)
3797 typedef Target_powerpc
<size
, big_endian
> Powerpc
;
3798 typedef typename Target_powerpc
<size
, big_endian
>::Relocate Powerpc_relocate
;
3800 gold_assert(sh_type
== elfcpp::SHT_RELA
);
3802 gold::relocate_section
<size
, big_endian
, Powerpc
, elfcpp::SHT_RELA
,
3809 needs_special_offset_handling
,
3813 reloc_symbol_changes
);
3816 class Powerpc_scan_relocatable_reloc
3819 // Return the strategy to use for a local symbol which is not a
3820 // section symbol, given the relocation type.
3821 inline Relocatable_relocs::Reloc_strategy
3822 local_non_section_strategy(unsigned int r_type
, Relobj
*, unsigned int r_sym
)
3824 if (r_type
== 0 && r_sym
== 0)
3825 return Relocatable_relocs::RELOC_DISCARD
;
3826 return Relocatable_relocs::RELOC_COPY
;
3829 // Return the strategy to use for a local symbol which is a section
3830 // symbol, given the relocation type.
3831 inline Relocatable_relocs::Reloc_strategy
3832 local_section_strategy(unsigned int, Relobj
*)
3834 return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
;
3837 // Return the strategy to use for a global symbol, given the
3838 // relocation type, the object, and the symbol index.
3839 inline Relocatable_relocs::Reloc_strategy
3840 global_strategy(unsigned int r_type
, Relobj
*, unsigned int)
3842 if (r_type
== elfcpp::R_PPC_PLTREL24
)
3843 return Relocatable_relocs::RELOC_SPECIAL
;
3844 return Relocatable_relocs::RELOC_COPY
;
3848 // Scan the relocs during a relocatable link.
3850 template<int size
, bool big_endian
>
3852 Target_powerpc
<size
, big_endian
>::scan_relocatable_relocs(
3853 Symbol_table
* symtab
,
3855 Sized_relobj_file
<size
, big_endian
>* object
,
3856 unsigned int data_shndx
,
3857 unsigned int sh_type
,
3858 const unsigned char* prelocs
,
3860 Output_section
* output_section
,
3861 bool needs_special_offset_handling
,
3862 size_t local_symbol_count
,
3863 const unsigned char* plocal_symbols
,
3864 Relocatable_relocs
* rr
)
3866 gold_assert(sh_type
== elfcpp::SHT_RELA
);
3868 gold::scan_relocatable_relocs
<size
, big_endian
, elfcpp::SHT_RELA
,
3869 Powerpc_scan_relocatable_reloc
>(
3877 needs_special_offset_handling
,
3883 // Relocate a section during a relocatable link.
3884 // This is a modified version of the function by the same name in
3885 // target-reloc.h. Using relocate_special_relocatable for
3886 // R_PPC_PLTREL24 would require duplication of the entire body of the
3887 // loop, so we may as well duplicate the whole thing.
3889 template<int size
, bool big_endian
>
3891 Target_powerpc
<size
, big_endian
>::relocate_for_relocatable(
3892 const Relocate_info
<size
, big_endian
>* relinfo
,
3893 unsigned int sh_type
,
3894 const unsigned char* prelocs
,
3896 Output_section
* output_section
,
3897 off_t offset_in_output_section
,
3898 const Relocatable_relocs
* rr
,
3900 Address view_address
,
3902 unsigned char* reloc_view
,
3903 section_size_type reloc_view_size
)
3905 gold_assert(sh_type
== elfcpp::SHT_RELA
);
3907 typedef typename Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::Reloc
3909 typedef typename Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::Reloc_write
3911 const int reloc_size
3912 = Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::reloc_size
;
3914 Powerpc_relobj
<size
, big_endian
>* const object
3915 = static_cast<Powerpc_relobj
<size
, big_endian
>*>(relinfo
->object
);
3916 const unsigned int local_count
= object
->local_symbol_count();
3917 unsigned int got2_shndx
= object
->got2_shndx();
3918 Address got2_addend
= 0;
3919 if (got2_shndx
!= 0)
3921 got2_addend
= object
->get_output_section_offset(got2_shndx
);
3922 gold_assert(got2_addend
!= invalid_address
);
3925 unsigned char* pwrite
= reloc_view
;
3927 for (size_t i
= 0; i
< reloc_count
; ++i
, prelocs
+= reloc_size
)
3929 Relocatable_relocs::Reloc_strategy strategy
= rr
->strategy(i
);
3930 if (strategy
== Relocatable_relocs::RELOC_DISCARD
)
3933 Reltype
reloc(prelocs
);
3934 Reltype_write
reloc_write(pwrite
);
3936 typename
elfcpp::Elf_types
<size
>::Elf_WXword r_info
= reloc
.get_r_info();
3937 const unsigned int r_sym
= elfcpp::elf_r_sym
<size
>(r_info
);
3938 const unsigned int r_type
= elfcpp::elf_r_type
<size
>(r_info
);
3940 // Get the new symbol index.
3942 unsigned int new_symndx
;
3943 if (r_sym
< local_count
)
3947 case Relocatable_relocs::RELOC_COPY
:
3948 case Relocatable_relocs::RELOC_SPECIAL
:
3953 new_symndx
= object
->symtab_index(r_sym
);
3954 gold_assert(new_symndx
!= -1U);
3958 case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
:
3960 // We are adjusting a section symbol. We need to find
3961 // the symbol table index of the section symbol for
3962 // the output section corresponding to input section
3963 // in which this symbol is defined.
3964 gold_assert(r_sym
< local_count
);
3966 unsigned int shndx
=
3967 object
->local_symbol_input_shndx(r_sym
, &is_ordinary
);
3968 gold_assert(is_ordinary
);
3969 Output_section
* os
= object
->output_section(shndx
);
3970 gold_assert(os
!= NULL
);
3971 gold_assert(os
->needs_symtab_index());
3972 new_symndx
= os
->symtab_index();
3982 const Symbol
* gsym
= object
->global_symbol(r_sym
);
3983 gold_assert(gsym
!= NULL
);
3984 if (gsym
->is_forwarder())
3985 gsym
= relinfo
->symtab
->resolve_forwards(gsym
);
3987 gold_assert(gsym
->has_symtab_index());
3988 new_symndx
= gsym
->symtab_index();
3991 // Get the new offset--the location in the output section where
3992 // this relocation should be applied.
3994 Address offset
= reloc
.get_r_offset();
3996 if (static_cast<Address
>(offset_in_output_section
) != invalid_address
)
3997 new_offset
= offset
+ offset_in_output_section
;
4000 section_offset_type sot_offset
=
4001 convert_types
<section_offset_type
, Address
>(offset
);
4002 section_offset_type new_sot_offset
=
4003 output_section
->output_offset(object
, relinfo
->data_shndx
,
4005 gold_assert(new_sot_offset
!= -1);
4006 new_offset
= new_sot_offset
;
4009 // In an object file, r_offset is an offset within the section.
4010 // In an executable or dynamic object, generated by
4011 // --emit-relocs, r_offset is an absolute address.
4012 // FIXME: Arrange to call this function for --emit-relocs too,
4013 // so that we can make emitted relocs match edited TLS code.
4014 if (0 && !parameters
->options().relocatable())
4016 new_offset
+= view_address
;
4017 if (static_cast<Address
>(offset_in_output_section
) != invalid_address
)
4018 new_offset
-= offset_in_output_section
;
4021 reloc_write
.put_r_offset(new_offset
);
4022 reloc_write
.put_r_info(elfcpp::elf_r_info
<size
>(new_symndx
, r_type
));
4024 // Handle the reloc addend based on the strategy.
4025 typename
elfcpp::Elf_types
<size
>::Elf_Swxword addend
;
4026 addend
= Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::
4027 get_reloc_addend(&reloc
);
4029 if (strategy
== Relocatable_relocs::RELOC_COPY
)
4031 else if (strategy
== Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA
)
4033 const Symbol_value
<size
>* psymval
= object
->local_symbol(r_sym
);
4034 addend
= psymval
->value(object
, addend
);
4036 else if (strategy
== Relocatable_relocs::RELOC_SPECIAL
)
4038 if (addend
>= 32768)
4039 addend
+= got2_addend
;
4044 Reloc_types
<elfcpp::SHT_RELA
, size
, big_endian
>::
4045 set_reloc_addend(&reloc_write
, addend
);
4047 pwrite
+= reloc_size
;
4050 gold_assert(static_cast<section_size_type
>(pwrite
- reloc_view
)
4051 == reloc_view_size
);
4054 // Return the value to use for a dynamic which requires special
4055 // treatment. This is how we support equality comparisons of function
4056 // pointers across shared library boundaries, as described in the
4057 // processor specific ABI supplement.
4059 template<int size
, bool big_endian
>
4061 Target_powerpc
<size
, big_endian
>::do_dynsym_value(const Symbol
* gsym
) const
4065 gold_assert(gsym
->is_from_dynobj() && gsym
->has_plt_offset());
4066 return this->plt_section()->address() + gsym
->plt_offset();
4072 // The selector for powerpc object files.
4074 template<int size
, bool big_endian
>
4075 class Target_selector_powerpc
: public Target_selector
4078 Target_selector_powerpc()
4079 : Target_selector(elfcpp::EM_NONE
, size
, big_endian
,
4081 ? (big_endian
? "elf64-powerpc" : "elf64-powerpcle")
4082 : (big_endian
? "elf32-powerpc" : "elf32-powerpcle")),
4084 ? (big_endian
? "elf64ppc" : "elf64lppc")
4085 : (big_endian
? "elf32ppc" : "elf32lppc")))
4089 do_recognize(Input_file
*, off_t
, int machine
, int, int)
4094 if (machine
!= elfcpp::EM_PPC64
)
4099 if (machine
!= elfcpp::EM_PPC
)
4107 return this->instantiate_target();
4111 do_instantiate_target()
4112 { return new Target_powerpc
<size
, big_endian
>(); }
4115 Target_selector_powerpc
<32, true> target_selector_ppc32
;
4116 Target_selector_powerpc
<32, false> target_selector_ppc32le
;
4117 Target_selector_powerpc
<64, true> target_selector_ppc64
;
4118 Target_selector_powerpc
<64, false> target_selector_ppc64le
;
4120 } // End anonymous namespace.