1 // output.cc -- manage the output file for gold
3 // Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
4 // Written by Ian Lance Taylor <iant@google.com>.
6 // This file is part of gold.
8 // This program is free software; you can redistribute it and/or modify
9 // it under the terms of the GNU General Public License as published by
10 // the Free Software Foundation; either version 3 of the License, or
11 // (at your option) any later version.
13 // This program is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 // GNU General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the Free Software
20 // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 // MA 02110-1301, USA.
33 #include "libiberty.h" // for unlink_if_ordinary()
35 #include "parameters.h"
42 // Some BSD systems still use MAP_ANON instead of MAP_ANONYMOUS
44 # define MAP_ANONYMOUS MAP_ANON
50 // Output_data variables.
52 bool Output_data::allocated_sizes_are_fixed
;
54 // Output_data methods.
56 Output_data::~Output_data()
60 // Return the default alignment for the target size.
63 Output_data::default_alignment()
65 return Output_data::default_alignment_for_size(
66 parameters
->target().get_size());
69 // Return the default alignment for a size--32 or 64.
72 Output_data::default_alignment_for_size(int size
)
82 // Output_section_header methods. This currently assumes that the
83 // segment and section lists are complete at construction time.
85 Output_section_headers::Output_section_headers(
87 const Layout::Segment_list
* segment_list
,
88 const Layout::Section_list
* section_list
,
89 const Layout::Section_list
* unattached_section_list
,
90 const Stringpool
* secnamepool
,
91 const Output_section
* shstrtab_section
)
93 segment_list_(segment_list
),
94 section_list_(section_list
),
95 unattached_section_list_(unattached_section_list
),
96 secnamepool_(secnamepool
),
97 shstrtab_section_(shstrtab_section
)
99 // Count all the sections. Start with 1 for the null section.
101 if (!parameters
->options().relocatable())
103 for (Layout::Segment_list::const_iterator p
= segment_list
->begin();
104 p
!= segment_list
->end();
106 if ((*p
)->type() == elfcpp::PT_LOAD
)
107 count
+= (*p
)->output_section_count();
111 for (Layout::Section_list::const_iterator p
= section_list
->begin();
112 p
!= section_list
->end();
114 if (((*p
)->flags() & elfcpp::SHF_ALLOC
) != 0)
117 count
+= unattached_section_list
->size();
119 const int size
= parameters
->target().get_size();
122 shdr_size
= elfcpp::Elf_sizes
<32>::shdr_size
;
124 shdr_size
= elfcpp::Elf_sizes
<64>::shdr_size
;
128 this->set_data_size(count
* shdr_size
);
131 // Write out the section headers.
134 Output_section_headers::do_write(Output_file
* of
)
136 switch (parameters
->size_and_endianness())
138 #ifdef HAVE_TARGET_32_LITTLE
139 case Parameters::TARGET_32_LITTLE
:
140 this->do_sized_write
<32, false>(of
);
143 #ifdef HAVE_TARGET_32_BIG
144 case Parameters::TARGET_32_BIG
:
145 this->do_sized_write
<32, true>(of
);
148 #ifdef HAVE_TARGET_64_LITTLE
149 case Parameters::TARGET_64_LITTLE
:
150 this->do_sized_write
<64, false>(of
);
153 #ifdef HAVE_TARGET_64_BIG
154 case Parameters::TARGET_64_BIG
:
155 this->do_sized_write
<64, true>(of
);
163 template<int size
, bool big_endian
>
165 Output_section_headers::do_sized_write(Output_file
* of
)
167 off_t all_shdrs_size
= this->data_size();
168 unsigned char* view
= of
->get_output_view(this->offset(), all_shdrs_size
);
170 const int shdr_size
= elfcpp::Elf_sizes
<size
>::shdr_size
;
171 unsigned char* v
= view
;
174 typename
elfcpp::Shdr_write
<size
, big_endian
> oshdr(v
);
175 oshdr
.put_sh_name(0);
176 oshdr
.put_sh_type(elfcpp::SHT_NULL
);
177 oshdr
.put_sh_flags(0);
178 oshdr
.put_sh_addr(0);
179 oshdr
.put_sh_offset(0);
181 size_t section_count
= (this->data_size()
182 / elfcpp::Elf_sizes
<size
>::shdr_size
);
183 if (section_count
< elfcpp::SHN_LORESERVE
)
184 oshdr
.put_sh_size(0);
186 oshdr
.put_sh_size(section_count
);
188 unsigned int shstrndx
= this->shstrtab_section_
->out_shndx();
189 if (shstrndx
< elfcpp::SHN_LORESERVE
)
190 oshdr
.put_sh_link(0);
192 oshdr
.put_sh_link(shstrndx
);
194 oshdr
.put_sh_info(0);
195 oshdr
.put_sh_addralign(0);
196 oshdr
.put_sh_entsize(0);
201 unsigned int shndx
= 1;
202 if (!parameters
->options().relocatable())
204 for (Layout::Segment_list::const_iterator p
=
205 this->segment_list_
->begin();
206 p
!= this->segment_list_
->end();
208 v
= (*p
)->write_section_headers
<size
, big_endian
>(this->layout_
,
215 for (Layout::Section_list::const_iterator p
=
216 this->section_list_
->begin();
217 p
!= this->section_list_
->end();
220 // We do unallocated sections below, except that group
221 // sections have to come first.
222 if (((*p
)->flags() & elfcpp::SHF_ALLOC
) == 0
223 && (*p
)->type() != elfcpp::SHT_GROUP
)
225 gold_assert(shndx
== (*p
)->out_shndx());
226 elfcpp::Shdr_write
<size
, big_endian
> oshdr(v
);
227 (*p
)->write_header(this->layout_
, this->secnamepool_
, &oshdr
);
233 for (Layout::Section_list::const_iterator p
=
234 this->unattached_section_list_
->begin();
235 p
!= this->unattached_section_list_
->end();
238 // For a relocatable link, we did unallocated group sections
239 // above, since they have to come first.
240 if ((*p
)->type() == elfcpp::SHT_GROUP
241 && parameters
->options().relocatable())
243 gold_assert(shndx
== (*p
)->out_shndx());
244 elfcpp::Shdr_write
<size
, big_endian
> oshdr(v
);
245 (*p
)->write_header(this->layout_
, this->secnamepool_
, &oshdr
);
250 of
->write_output_view(this->offset(), all_shdrs_size
, view
);
253 // Output_segment_header methods.
255 Output_segment_headers::Output_segment_headers(
256 const Layout::Segment_list
& segment_list
)
257 : segment_list_(segment_list
)
259 const int size
= parameters
->target().get_size();
262 phdr_size
= elfcpp::Elf_sizes
<32>::phdr_size
;
264 phdr_size
= elfcpp::Elf_sizes
<64>::phdr_size
;
268 this->set_data_size(segment_list
.size() * phdr_size
);
272 Output_segment_headers::do_write(Output_file
* of
)
274 switch (parameters
->size_and_endianness())
276 #ifdef HAVE_TARGET_32_LITTLE
277 case Parameters::TARGET_32_LITTLE
:
278 this->do_sized_write
<32, false>(of
);
281 #ifdef HAVE_TARGET_32_BIG
282 case Parameters::TARGET_32_BIG
:
283 this->do_sized_write
<32, true>(of
);
286 #ifdef HAVE_TARGET_64_LITTLE
287 case Parameters::TARGET_64_LITTLE
:
288 this->do_sized_write
<64, false>(of
);
291 #ifdef HAVE_TARGET_64_BIG
292 case Parameters::TARGET_64_BIG
:
293 this->do_sized_write
<64, true>(of
);
301 template<int size
, bool big_endian
>
303 Output_segment_headers::do_sized_write(Output_file
* of
)
305 const int phdr_size
= elfcpp::Elf_sizes
<size
>::phdr_size
;
306 off_t all_phdrs_size
= this->segment_list_
.size() * phdr_size
;
307 gold_assert(all_phdrs_size
== this->data_size());
308 unsigned char* view
= of
->get_output_view(this->offset(),
310 unsigned char* v
= view
;
311 for (Layout::Segment_list::const_iterator p
= this->segment_list_
.begin();
312 p
!= this->segment_list_
.end();
315 elfcpp::Phdr_write
<size
, big_endian
> ophdr(v
);
316 (*p
)->write_header(&ophdr
);
320 gold_assert(v
- view
== all_phdrs_size
);
322 of
->write_output_view(this->offset(), all_phdrs_size
, view
);
325 // Output_file_header methods.
327 Output_file_header::Output_file_header(const Target
* target
,
328 const Symbol_table
* symtab
,
329 const Output_segment_headers
* osh
,
333 segment_header_(osh
),
334 section_header_(NULL
),
338 const int size
= parameters
->target().get_size();
341 ehdr_size
= elfcpp::Elf_sizes
<32>::ehdr_size
;
343 ehdr_size
= elfcpp::Elf_sizes
<64>::ehdr_size
;
347 this->set_data_size(ehdr_size
);
350 // Set the section table information for a file header.
353 Output_file_header::set_section_info(const Output_section_headers
* shdrs
,
354 const Output_section
* shstrtab
)
356 this->section_header_
= shdrs
;
357 this->shstrtab_
= shstrtab
;
360 // Write out the file header.
363 Output_file_header::do_write(Output_file
* of
)
365 gold_assert(this->offset() == 0);
367 switch (parameters
->size_and_endianness())
369 #ifdef HAVE_TARGET_32_LITTLE
370 case Parameters::TARGET_32_LITTLE
:
371 this->do_sized_write
<32, false>(of
);
374 #ifdef HAVE_TARGET_32_BIG
375 case Parameters::TARGET_32_BIG
:
376 this->do_sized_write
<32, true>(of
);
379 #ifdef HAVE_TARGET_64_LITTLE
380 case Parameters::TARGET_64_LITTLE
:
381 this->do_sized_write
<64, false>(of
);
384 #ifdef HAVE_TARGET_64_BIG
385 case Parameters::TARGET_64_BIG
:
386 this->do_sized_write
<64, true>(of
);
394 // Write out the file header with appropriate size and endianess.
396 template<int size
, bool big_endian
>
398 Output_file_header::do_sized_write(Output_file
* of
)
400 gold_assert(this->offset() == 0);
402 int ehdr_size
= elfcpp::Elf_sizes
<size
>::ehdr_size
;
403 unsigned char* view
= of
->get_output_view(0, ehdr_size
);
404 elfcpp::Ehdr_write
<size
, big_endian
> oehdr(view
);
406 unsigned char e_ident
[elfcpp::EI_NIDENT
];
407 memset(e_ident
, 0, elfcpp::EI_NIDENT
);
408 e_ident
[elfcpp::EI_MAG0
] = elfcpp::ELFMAG0
;
409 e_ident
[elfcpp::EI_MAG1
] = elfcpp::ELFMAG1
;
410 e_ident
[elfcpp::EI_MAG2
] = elfcpp::ELFMAG2
;
411 e_ident
[elfcpp::EI_MAG3
] = elfcpp::ELFMAG3
;
413 e_ident
[elfcpp::EI_CLASS
] = elfcpp::ELFCLASS32
;
415 e_ident
[elfcpp::EI_CLASS
] = elfcpp::ELFCLASS64
;
418 e_ident
[elfcpp::EI_DATA
] = (big_endian
419 ? elfcpp::ELFDATA2MSB
420 : elfcpp::ELFDATA2LSB
);
421 e_ident
[elfcpp::EI_VERSION
] = elfcpp::EV_CURRENT
;
422 // FIXME: Some targets may need to set EI_OSABI and EI_ABIVERSION.
423 oehdr
.put_e_ident(e_ident
);
426 if (parameters
->options().relocatable())
427 e_type
= elfcpp::ET_REL
;
428 else if (parameters
->options().shared())
429 e_type
= elfcpp::ET_DYN
;
431 e_type
= elfcpp::ET_EXEC
;
432 oehdr
.put_e_type(e_type
);
434 oehdr
.put_e_machine(this->target_
->machine_code());
435 oehdr
.put_e_version(elfcpp::EV_CURRENT
);
437 oehdr
.put_e_entry(this->entry
<size
>());
439 if (this->segment_header_
== NULL
)
440 oehdr
.put_e_phoff(0);
442 oehdr
.put_e_phoff(this->segment_header_
->offset());
444 oehdr
.put_e_shoff(this->section_header_
->offset());
446 // FIXME: The target needs to set the flags.
447 oehdr
.put_e_flags(0);
449 oehdr
.put_e_ehsize(elfcpp::Elf_sizes
<size
>::ehdr_size
);
451 if (this->segment_header_
== NULL
)
453 oehdr
.put_e_phentsize(0);
454 oehdr
.put_e_phnum(0);
458 oehdr
.put_e_phentsize(elfcpp::Elf_sizes
<size
>::phdr_size
);
459 oehdr
.put_e_phnum(this->segment_header_
->data_size()
460 / elfcpp::Elf_sizes
<size
>::phdr_size
);
463 oehdr
.put_e_shentsize(elfcpp::Elf_sizes
<size
>::shdr_size
);
464 size_t section_count
= (this->section_header_
->data_size()
465 / elfcpp::Elf_sizes
<size
>::shdr_size
);
467 if (section_count
< elfcpp::SHN_LORESERVE
)
468 oehdr
.put_e_shnum(this->section_header_
->data_size()
469 / elfcpp::Elf_sizes
<size
>::shdr_size
);
471 oehdr
.put_e_shnum(0);
473 unsigned int shstrndx
= this->shstrtab_
->out_shndx();
474 if (shstrndx
< elfcpp::SHN_LORESERVE
)
475 oehdr
.put_e_shstrndx(this->shstrtab_
->out_shndx());
477 oehdr
.put_e_shstrndx(elfcpp::SHN_XINDEX
);
479 of
->write_output_view(0, ehdr_size
, view
);
482 // Return the value to use for the entry address. THIS->ENTRY_ is the
483 // symbol specified on the command line, if any.
486 typename
elfcpp::Elf_types
<size
>::Elf_Addr
487 Output_file_header::entry()
489 const bool should_issue_warning
= (this->entry_
!= NULL
490 && !parameters
->options().relocatable()
491 && !parameters
->options().shared());
493 // FIXME: Need to support target specific entry symbol.
494 const char* entry
= this->entry_
;
498 Symbol
* sym
= this->symtab_
->lookup(entry
);
500 typename Sized_symbol
<size
>::Value_type v
;
503 Sized_symbol
<size
>* ssym
;
504 ssym
= this->symtab_
->get_sized_symbol
<size
>(sym
);
505 if (!ssym
->is_defined() && should_issue_warning
)
506 gold_warning("entry symbol '%s' exists but is not defined", entry
);
511 // We couldn't find the entry symbol. See if we can parse it as
512 // a number. This supports, e.g., -e 0x1000.
514 v
= strtoull(entry
, &endptr
, 0);
517 if (should_issue_warning
)
518 gold_warning("cannot find entry symbol '%s'", entry
);
526 // Output_data_const methods.
529 Output_data_const::do_write(Output_file
* of
)
531 of
->write(this->offset(), this->data_
.data(), this->data_
.size());
534 // Output_data_const_buffer methods.
537 Output_data_const_buffer::do_write(Output_file
* of
)
539 of
->write(this->offset(), this->p_
, this->data_size());
542 // Output_section_data methods.
544 // Record the output section, and set the entry size and such.
547 Output_section_data::set_output_section(Output_section
* os
)
549 gold_assert(this->output_section_
== NULL
);
550 this->output_section_
= os
;
551 this->do_adjust_output_section(os
);
554 // Return the section index of the output section.
557 Output_section_data::do_out_shndx() const
559 gold_assert(this->output_section_
!= NULL
);
560 return this->output_section_
->out_shndx();
563 // Set the alignment, which means we may need to update the alignment
564 // of the output section.
567 Output_section_data::set_addralign(uint64_t addralign
)
569 this->addralign_
= addralign
;
570 if (this->output_section_
!= NULL
571 && this->output_section_
->addralign() < addralign
)
572 this->output_section_
->set_addralign(addralign
);
575 // Output_data_strtab methods.
577 // Set the final data size.
580 Output_data_strtab::set_final_data_size()
582 this->strtab_
->set_string_offsets();
583 this->set_data_size(this->strtab_
->get_strtab_size());
586 // Write out a string table.
589 Output_data_strtab::do_write(Output_file
* of
)
591 this->strtab_
->write(of
, this->offset());
594 // Output_reloc methods.
596 // A reloc against a global symbol.
598 template<bool dynamic
, int size
, bool big_endian
>
599 Output_reloc
<elfcpp::SHT_REL
, dynamic
, size
, big_endian
>::Output_reloc(
605 : address_(address
), local_sym_index_(GSYM_CODE
), type_(type
),
606 is_relative_(is_relative
), is_section_symbol_(false), shndx_(INVALID_CODE
)
608 // this->type_ is a bitfield; make sure TYPE fits.
609 gold_assert(this->type_
== type
);
610 this->u1_
.gsym
= gsym
;
613 this->set_needs_dynsym_index();
616 template<bool dynamic
, int size
, bool big_endian
>
617 Output_reloc
<elfcpp::SHT_REL
, dynamic
, size
, big_endian
>::Output_reloc(
624 : address_(address
), local_sym_index_(GSYM_CODE
), type_(type
),
625 is_relative_(is_relative
), is_section_symbol_(false), shndx_(shndx
)
627 gold_assert(shndx
!= INVALID_CODE
);
628 // this->type_ is a bitfield; make sure TYPE fits.
629 gold_assert(this->type_
== type
);
630 this->u1_
.gsym
= gsym
;
631 this->u2_
.relobj
= relobj
;
633 this->set_needs_dynsym_index();
636 // A reloc against a local symbol.
638 template<bool dynamic
, int size
, bool big_endian
>
639 Output_reloc
<elfcpp::SHT_REL
, dynamic
, size
, big_endian
>::Output_reloc(
640 Sized_relobj
<size
, big_endian
>* relobj
,
641 unsigned int local_sym_index
,
646 bool is_section_symbol
)
647 : address_(address
), local_sym_index_(local_sym_index
), type_(type
),
648 is_relative_(is_relative
), is_section_symbol_(is_section_symbol
),
651 gold_assert(local_sym_index
!= GSYM_CODE
652 && local_sym_index
!= INVALID_CODE
);
653 // this->type_ is a bitfield; make sure TYPE fits.
654 gold_assert(this->type_
== type
);
655 this->u1_
.relobj
= relobj
;
658 this->set_needs_dynsym_index();
661 template<bool dynamic
, int size
, bool big_endian
>
662 Output_reloc
<elfcpp::SHT_REL
, dynamic
, size
, big_endian
>::Output_reloc(
663 Sized_relobj
<size
, big_endian
>* relobj
,
664 unsigned int local_sym_index
,
669 bool is_section_symbol
)
670 : address_(address
), local_sym_index_(local_sym_index
), type_(type
),
671 is_relative_(is_relative
), is_section_symbol_(is_section_symbol
),
674 gold_assert(local_sym_index
!= GSYM_CODE
675 && local_sym_index
!= INVALID_CODE
);
676 gold_assert(shndx
!= INVALID_CODE
);
677 // this->type_ is a bitfield; make sure TYPE fits.
678 gold_assert(this->type_
== type
);
679 this->u1_
.relobj
= relobj
;
680 this->u2_
.relobj
= relobj
;
682 this->set_needs_dynsym_index();
685 // A reloc against the STT_SECTION symbol of an output section.
687 template<bool dynamic
, int size
, bool big_endian
>
688 Output_reloc
<elfcpp::SHT_REL
, dynamic
, size
, big_endian
>::Output_reloc(
693 : address_(address
), local_sym_index_(SECTION_CODE
), type_(type
),
694 is_relative_(false), is_section_symbol_(true), shndx_(INVALID_CODE
)
696 // this->type_ is a bitfield; make sure TYPE fits.
697 gold_assert(this->type_
== type
);
701 this->set_needs_dynsym_index();
703 os
->set_needs_symtab_index();
706 template<bool dynamic
, int size
, bool big_endian
>
707 Output_reloc
<elfcpp::SHT_REL
, dynamic
, size
, big_endian
>::Output_reloc(
713 : address_(address
), local_sym_index_(SECTION_CODE
), type_(type
),
714 is_relative_(false), is_section_symbol_(true), shndx_(shndx
)
716 gold_assert(shndx
!= INVALID_CODE
);
717 // this->type_ is a bitfield; make sure TYPE fits.
718 gold_assert(this->type_
== type
);
720 this->u2_
.relobj
= relobj
;
722 this->set_needs_dynsym_index();
724 os
->set_needs_symtab_index();
727 // Record that we need a dynamic symbol index for this relocation.
729 template<bool dynamic
, int size
, bool big_endian
>
731 Output_reloc
<elfcpp::SHT_REL
, dynamic
, size
, big_endian
>::
732 set_needs_dynsym_index()
734 if (this->is_relative_
)
736 switch (this->local_sym_index_
)
742 this->u1_
.gsym
->set_needs_dynsym_entry();
746 this->u1_
.os
->set_needs_dynsym_index();
754 const unsigned int lsi
= this->local_sym_index_
;
755 if (!this->is_section_symbol_
)
756 this->u1_
.relobj
->set_needs_output_dynsym_entry(lsi
);
759 section_offset_type dummy
;
760 Output_section
* os
= this->u1_
.relobj
->output_section(lsi
, &dummy
);
761 gold_assert(os
!= NULL
);
762 os
->set_needs_dynsym_index();
769 // Get the symbol index of a relocation.
771 template<bool dynamic
, int size
, bool big_endian
>
773 Output_reloc
<elfcpp::SHT_REL
, dynamic
, size
, big_endian
>::get_symbol_index()
777 switch (this->local_sym_index_
)
783 if (this->u1_
.gsym
== NULL
)
786 index
= this->u1_
.gsym
->dynsym_index();
788 index
= this->u1_
.gsym
->symtab_index();
793 index
= this->u1_
.os
->dynsym_index();
795 index
= this->u1_
.os
->symtab_index();
799 // Relocations without symbols use a symbol index of 0.
805 const unsigned int lsi
= this->local_sym_index_
;
806 if (!this->is_section_symbol_
)
809 index
= this->u1_
.relobj
->dynsym_index(lsi
);
811 index
= this->u1_
.relobj
->symtab_index(lsi
);
815 section_offset_type dummy
;
816 Output_section
* os
= this->u1_
.relobj
->output_section(lsi
, &dummy
);
817 gold_assert(os
!= NULL
);
819 index
= os
->dynsym_index();
821 index
= os
->symtab_index();
826 gold_assert(index
!= -1U);
830 // For a local section symbol, get the address of the offset ADDEND
831 // within the input section.
833 template<bool dynamic
, int size
, bool big_endian
>
835 Output_reloc
<elfcpp::SHT_REL
, dynamic
, size
, big_endian
>::
836 local_section_offset(Addend addend
) const
838 gold_assert(this->local_sym_index_
!= GSYM_CODE
839 && this->local_sym_index_
!= SECTION_CODE
840 && this->local_sym_index_
!= INVALID_CODE
841 && this->is_section_symbol_
);
842 const unsigned int lsi
= this->local_sym_index_
;
843 section_offset_type offset
;
844 Output_section
* os
= this->u1_
.relobj
->output_section(lsi
, &offset
);
845 gold_assert(os
!= NULL
);
847 return offset
+ addend
;
848 // This is a merge section.
849 offset
= os
->output_address(this->u1_
.relobj
, lsi
, addend
);
850 gold_assert(offset
!= -1);
854 // Get the output address of a relocation.
856 template<bool dynamic
, int size
, bool big_endian
>
858 Output_reloc
<elfcpp::SHT_REL
, dynamic
, size
, big_endian
>::get_address() const
860 Address address
= this->address_
;
861 if (this->shndx_
!= INVALID_CODE
)
863 section_offset_type off
;
864 Output_section
* os
= this->u2_
.relobj
->output_section(this->shndx_
,
866 gold_assert(os
!= NULL
);
868 address
+= os
->address() + off
;
871 address
= os
->output_address(this->u2_
.relobj
, this->shndx_
,
873 gold_assert(address
!= -1U);
876 else if (this->u2_
.od
!= NULL
)
877 address
+= this->u2_
.od
->address();
881 // Write out the offset and info fields of a Rel or Rela relocation
884 template<bool dynamic
, int size
, bool big_endian
>
885 template<typename Write_rel
>
887 Output_reloc
<elfcpp::SHT_REL
, dynamic
, size
, big_endian
>::write_rel(
890 wr
->put_r_offset(this->get_address());
891 unsigned int sym_index
= this->is_relative_
? 0 : this->get_symbol_index();
892 wr
->put_r_info(elfcpp::elf_r_info
<size
>(sym_index
, this->type_
));
895 // Write out a Rel relocation.
897 template<bool dynamic
, int size
, bool big_endian
>
899 Output_reloc
<elfcpp::SHT_REL
, dynamic
, size
, big_endian
>::write(
900 unsigned char* pov
) const
902 elfcpp::Rel_write
<size
, big_endian
> orel(pov
);
903 this->write_rel(&orel
);
906 // Get the value of the symbol referred to by a Rel relocation.
908 template<bool dynamic
, int size
, bool big_endian
>
909 typename
elfcpp::Elf_types
<size
>::Elf_Addr
910 Output_reloc
<elfcpp::SHT_REL
, dynamic
, size
, big_endian
>::symbol_value(
913 if (this->local_sym_index_
== GSYM_CODE
)
915 const Sized_symbol
<size
>* sym
;
916 sym
= static_cast<const Sized_symbol
<size
>*>(this->u1_
.gsym
);
917 return sym
->value() + addend
;
919 gold_assert(this->local_sym_index_
!= SECTION_CODE
920 && this->local_sym_index_
!= INVALID_CODE
921 && !this->is_section_symbol_
);
922 const unsigned int lsi
= this->local_sym_index_
;
923 const Symbol_value
<size
>* symval
= this->u1_
.relobj
->local_symbol(lsi
);
924 return symval
->value(this->u1_
.relobj
, addend
);
927 // Reloc comparison. This function sorts the dynamic relocs for the
928 // benefit of the dynamic linker. First we sort all relative relocs
929 // to the front. Among relative relocs, we sort by output address.
930 // Among non-relative relocs, we sort by symbol index, then by output
933 template<bool dynamic
, int size
, bool big_endian
>
935 Output_reloc
<elfcpp::SHT_REL
, dynamic
, size
, big_endian
>::
936 compare(const Output_reloc
<elfcpp::SHT_REL
, dynamic
, size
, big_endian
>& r2
)
939 if (this->is_relative_
)
941 if (!r2
.is_relative_
)
943 // Otherwise sort by reloc address below.
945 else if (r2
.is_relative_
)
949 unsigned int sym1
= this->get_symbol_index();
950 unsigned int sym2
= r2
.get_symbol_index();
953 else if (sym1
> sym2
)
955 // Otherwise sort by reloc address.
958 section_offset_type addr1
= this->get_address();
959 section_offset_type addr2
= r2
.get_address();
962 else if (addr1
> addr2
)
965 // Final tie breaker, in order to generate the same output on any
967 unsigned int type1
= this->type_
;
968 unsigned int type2
= r2
.type_
;
971 else if (type1
> type2
)
974 // These relocs appear to be exactly the same.
978 // Write out a Rela relocation.
980 template<bool dynamic
, int size
, bool big_endian
>
982 Output_reloc
<elfcpp::SHT_RELA
, dynamic
, size
, big_endian
>::write(
983 unsigned char* pov
) const
985 elfcpp::Rela_write
<size
, big_endian
> orel(pov
);
986 this->rel_
.write_rel(&orel
);
987 Addend addend
= this->addend_
;
988 if (this->rel_
.is_relative())
989 addend
= this->rel_
.symbol_value(addend
);
990 else if (this->rel_
.is_local_section_symbol())
991 addend
= this->rel_
.local_section_offset(addend
);
992 orel
.put_r_addend(addend
);
995 // Output_data_reloc_base methods.
997 // Adjust the output section.
999 template<int sh_type
, bool dynamic
, int size
, bool big_endian
>
1001 Output_data_reloc_base
<sh_type
, dynamic
, size
, big_endian
>
1002 ::do_adjust_output_section(Output_section
* os
)
1004 if (sh_type
== elfcpp::SHT_REL
)
1005 os
->set_entsize(elfcpp::Elf_sizes
<size
>::rel_size
);
1006 else if (sh_type
== elfcpp::SHT_RELA
)
1007 os
->set_entsize(elfcpp::Elf_sizes
<size
>::rela_size
);
1011 os
->set_should_link_to_dynsym();
1013 os
->set_should_link_to_symtab();
1016 // Write out relocation data.
1018 template<int sh_type
, bool dynamic
, int size
, bool big_endian
>
1020 Output_data_reloc_base
<sh_type
, dynamic
, size
, big_endian
>::do_write(
1023 const off_t off
= this->offset();
1024 const off_t oview_size
= this->data_size();
1025 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
1027 if (this->sort_relocs_
)
1029 gold_assert(dynamic
);
1030 std::sort(this->relocs_
.begin(), this->relocs_
.end(),
1031 Sort_relocs_comparison());
1034 unsigned char* pov
= oview
;
1035 for (typename
Relocs::const_iterator p
= this->relocs_
.begin();
1036 p
!= this->relocs_
.end();
1043 gold_assert(pov
- oview
== oview_size
);
1045 of
->write_output_view(off
, oview_size
, oview
);
1047 // We no longer need the relocation entries.
1048 this->relocs_
.clear();
1051 // Class Output_relocatable_relocs.
1053 template<int sh_type
, int size
, bool big_endian
>
1055 Output_relocatable_relocs
<sh_type
, size
, big_endian
>::set_final_data_size()
1057 this->set_data_size(this->rr_
->output_reloc_count()
1058 * Reloc_types
<sh_type
, size
, big_endian
>::reloc_size
);
1061 // class Output_data_group.
1063 template<int size
, bool big_endian
>
1064 Output_data_group
<size
, big_endian
>::Output_data_group(
1065 Sized_relobj
<size
, big_endian
>* relobj
,
1066 section_size_type entry_count
,
1067 elfcpp::Elf_Word flags
,
1068 std::vector
<unsigned int>* input_shndxes
)
1069 : Output_section_data(entry_count
* 4, 4),
1073 this->input_shndxes_
.swap(*input_shndxes
);
1076 // Write out the section group, which means translating the section
1077 // indexes to apply to the output file.
1079 template<int size
, bool big_endian
>
1081 Output_data_group
<size
, big_endian
>::do_write(Output_file
* of
)
1083 const off_t off
= this->offset();
1084 const section_size_type oview_size
=
1085 convert_to_section_size_type(this->data_size());
1086 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
1088 elfcpp::Elf_Word
* contents
= reinterpret_cast<elfcpp::Elf_Word
*>(oview
);
1089 elfcpp::Swap
<32, big_endian
>::writeval(contents
, this->flags_
);
1092 for (std::vector
<unsigned int>::const_iterator p
=
1093 this->input_shndxes_
.begin();
1094 p
!= this->input_shndxes_
.end();
1097 section_offset_type dummy
;
1098 Output_section
* os
= this->relobj_
->output_section(*p
, &dummy
);
1100 unsigned int output_shndx
;
1102 output_shndx
= os
->out_shndx();
1105 this->relobj_
->error(_("section group retained but "
1106 "group element discarded"));
1110 elfcpp::Swap
<32, big_endian
>::writeval(contents
, output_shndx
);
1113 size_t wrote
= reinterpret_cast<unsigned char*>(contents
) - oview
;
1114 gold_assert(wrote
== oview_size
);
1116 of
->write_output_view(off
, oview_size
, oview
);
1118 // We no longer need this information.
1119 this->input_shndxes_
.clear();
1122 // Output_data_got::Got_entry methods.
1124 // Write out the entry.
1126 template<int size
, bool big_endian
>
1128 Output_data_got
<size
, big_endian
>::Got_entry::write(unsigned char* pov
) const
1132 switch (this->local_sym_index_
)
1136 // If the symbol is resolved locally, we need to write out the
1137 // link-time value, which will be relocated dynamically by a
1138 // RELATIVE relocation.
1139 Symbol
* gsym
= this->u_
.gsym
;
1140 Sized_symbol
<size
>* sgsym
;
1141 // This cast is a bit ugly. We don't want to put a
1142 // virtual method in Symbol, because we want Symbol to be
1143 // as small as possible.
1144 sgsym
= static_cast<Sized_symbol
<size
>*>(gsym
);
1145 val
= sgsym
->value();
1150 val
= this->u_
.constant
;
1155 const unsigned int lsi
= this->local_sym_index_
;
1156 const Symbol_value
<size
>* symval
= this->u_
.object
->local_symbol(lsi
);
1157 val
= symval
->value(this->u_
.object
, 0);
1162 elfcpp::Swap
<size
, big_endian
>::writeval(pov
, val
);
1165 // Output_data_got methods.
1167 // Add an entry for a global symbol to the GOT. This returns true if
1168 // this is a new GOT entry, false if the symbol already had a GOT
1171 template<int size
, bool big_endian
>
1173 Output_data_got
<size
, big_endian
>::add_global(
1175 unsigned int got_type
)
1177 if (gsym
->has_got_offset(got_type
))
1180 this->entries_
.push_back(Got_entry(gsym
));
1181 this->set_got_size();
1182 gsym
->set_got_offset(got_type
, this->last_got_offset());
1186 // Add an entry for a global symbol to the GOT, and add a dynamic
1187 // relocation of type R_TYPE for the GOT entry.
1188 template<int size
, bool big_endian
>
1190 Output_data_got
<size
, big_endian
>::add_global_with_rel(
1192 unsigned int got_type
,
1194 unsigned int r_type
)
1196 if (gsym
->has_got_offset(got_type
))
1199 this->entries_
.push_back(Got_entry());
1200 this->set_got_size();
1201 unsigned int got_offset
= this->last_got_offset();
1202 gsym
->set_got_offset(got_type
, got_offset
);
1203 rel_dyn
->add_global(gsym
, r_type
, this, got_offset
);
1206 template<int size
, bool big_endian
>
1208 Output_data_got
<size
, big_endian
>::add_global_with_rela(
1210 unsigned int got_type
,
1212 unsigned int r_type
)
1214 if (gsym
->has_got_offset(got_type
))
1217 this->entries_
.push_back(Got_entry());
1218 this->set_got_size();
1219 unsigned int got_offset
= this->last_got_offset();
1220 gsym
->set_got_offset(got_type
, got_offset
);
1221 rela_dyn
->add_global(gsym
, r_type
, this, got_offset
, 0);
1224 // Add a pair of entries for a global symbol to the GOT, and add
1225 // dynamic relocations of type R_TYPE_1 and R_TYPE_2, respectively.
1226 // If R_TYPE_2 == 0, add the second entry with no relocation.
1227 template<int size
, bool big_endian
>
1229 Output_data_got
<size
, big_endian
>::add_global_pair_with_rel(
1231 unsigned int got_type
,
1233 unsigned int r_type_1
,
1234 unsigned int r_type_2
)
1236 if (gsym
->has_got_offset(got_type
))
1239 this->entries_
.push_back(Got_entry());
1240 unsigned int got_offset
= this->last_got_offset();
1241 gsym
->set_got_offset(got_type
, got_offset
);
1242 rel_dyn
->add_global(gsym
, r_type_1
, this, got_offset
);
1244 this->entries_
.push_back(Got_entry());
1247 got_offset
= this->last_got_offset();
1248 rel_dyn
->add_global(gsym
, r_type_2
, this, got_offset
);
1251 this->set_got_size();
1254 template<int size
, bool big_endian
>
1256 Output_data_got
<size
, big_endian
>::add_global_pair_with_rela(
1258 unsigned int got_type
,
1260 unsigned int r_type_1
,
1261 unsigned int r_type_2
)
1263 if (gsym
->has_got_offset(got_type
))
1266 this->entries_
.push_back(Got_entry());
1267 unsigned int got_offset
= this->last_got_offset();
1268 gsym
->set_got_offset(got_type
, got_offset
);
1269 rela_dyn
->add_global(gsym
, r_type_1
, this, got_offset
, 0);
1271 this->entries_
.push_back(Got_entry());
1274 got_offset
= this->last_got_offset();
1275 rela_dyn
->add_global(gsym
, r_type_2
, this, got_offset
, 0);
1278 this->set_got_size();
1281 // Add an entry for a local symbol to the GOT. This returns true if
1282 // this is a new GOT entry, false if the symbol already has a GOT
1285 template<int size
, bool big_endian
>
1287 Output_data_got
<size
, big_endian
>::add_local(
1288 Sized_relobj
<size
, big_endian
>* object
,
1289 unsigned int symndx
,
1290 unsigned int got_type
)
1292 if (object
->local_has_got_offset(symndx
, got_type
))
1295 this->entries_
.push_back(Got_entry(object
, symndx
));
1296 this->set_got_size();
1297 object
->set_local_got_offset(symndx
, got_type
, this->last_got_offset());
1301 // Add an entry for a local symbol to the GOT, and add a dynamic
1302 // relocation of type R_TYPE for the GOT entry.
1303 template<int size
, bool big_endian
>
1305 Output_data_got
<size
, big_endian
>::add_local_with_rel(
1306 Sized_relobj
<size
, big_endian
>* object
,
1307 unsigned int symndx
,
1308 unsigned int got_type
,
1310 unsigned int r_type
)
1312 if (object
->local_has_got_offset(symndx
, got_type
))
1315 this->entries_
.push_back(Got_entry());
1316 this->set_got_size();
1317 unsigned int got_offset
= this->last_got_offset();
1318 object
->set_local_got_offset(symndx
, got_type
, got_offset
);
1319 rel_dyn
->add_local(object
, symndx
, r_type
, this, got_offset
);
1322 template<int size
, bool big_endian
>
1324 Output_data_got
<size
, big_endian
>::add_local_with_rela(
1325 Sized_relobj
<size
, big_endian
>* object
,
1326 unsigned int symndx
,
1327 unsigned int got_type
,
1329 unsigned int r_type
)
1331 if (object
->local_has_got_offset(symndx
, got_type
))
1334 this->entries_
.push_back(Got_entry());
1335 this->set_got_size();
1336 unsigned int got_offset
= this->last_got_offset();
1337 object
->set_local_got_offset(symndx
, got_type
, got_offset
);
1338 rela_dyn
->add_local(object
, symndx
, r_type
, this, got_offset
, 0);
1341 // Add a pair of entries for a local symbol to the GOT, and add
1342 // dynamic relocations of type R_TYPE_1 and R_TYPE_2, respectively.
1343 // If R_TYPE_2 == 0, add the second entry with no relocation.
1344 template<int size
, bool big_endian
>
1346 Output_data_got
<size
, big_endian
>::add_local_pair_with_rel(
1347 Sized_relobj
<size
, big_endian
>* object
,
1348 unsigned int symndx
,
1350 unsigned int got_type
,
1352 unsigned int r_type_1
,
1353 unsigned int r_type_2
)
1355 if (object
->local_has_got_offset(symndx
, got_type
))
1358 this->entries_
.push_back(Got_entry());
1359 unsigned int got_offset
= this->last_got_offset();
1360 object
->set_local_got_offset(symndx
, got_type
, got_offset
);
1361 section_offset_type off
;
1362 Output_section
* os
= object
->output_section(shndx
, &off
);
1363 rel_dyn
->add_output_section(os
, r_type_1
, this, got_offset
);
1365 this->entries_
.push_back(Got_entry(object
, symndx
));
1368 got_offset
= this->last_got_offset();
1369 rel_dyn
->add_output_section(os
, r_type_2
, this, got_offset
);
1372 this->set_got_size();
1375 template<int size
, bool big_endian
>
1377 Output_data_got
<size
, big_endian
>::add_local_pair_with_rela(
1378 Sized_relobj
<size
, big_endian
>* object
,
1379 unsigned int symndx
,
1381 unsigned int got_type
,
1383 unsigned int r_type_1
,
1384 unsigned int r_type_2
)
1386 if (object
->local_has_got_offset(symndx
, got_type
))
1389 this->entries_
.push_back(Got_entry());
1390 unsigned int got_offset
= this->last_got_offset();
1391 object
->set_local_got_offset(symndx
, got_type
, got_offset
);
1392 section_offset_type off
;
1393 Output_section
* os
= object
->output_section(shndx
, &off
);
1394 rela_dyn
->add_output_section(os
, r_type_1
, this, got_offset
, 0);
1396 this->entries_
.push_back(Got_entry(object
, symndx
));
1399 got_offset
= this->last_got_offset();
1400 rela_dyn
->add_output_section(os
, r_type_2
, this, got_offset
, 0);
1403 this->set_got_size();
1406 // Write out the GOT.
1408 template<int size
, bool big_endian
>
1410 Output_data_got
<size
, big_endian
>::do_write(Output_file
* of
)
1412 const int add
= size
/ 8;
1414 const off_t off
= this->offset();
1415 const off_t oview_size
= this->data_size();
1416 unsigned char* const oview
= of
->get_output_view(off
, oview_size
);
1418 unsigned char* pov
= oview
;
1419 for (typename
Got_entries::const_iterator p
= this->entries_
.begin();
1420 p
!= this->entries_
.end();
1427 gold_assert(pov
- oview
== oview_size
);
1429 of
->write_output_view(off
, oview_size
, oview
);
1431 // We no longer need the GOT entries.
1432 this->entries_
.clear();
1435 // Output_data_dynamic::Dynamic_entry methods.
1437 // Write out the entry.
1439 template<int size
, bool big_endian
>
1441 Output_data_dynamic::Dynamic_entry::write(
1443 const Stringpool
* pool
) const
1445 typename
elfcpp::Elf_types
<size
>::Elf_WXword val
;
1446 switch (this->offset_
)
1448 case DYNAMIC_NUMBER
:
1452 case DYNAMIC_SECTION_SIZE
:
1453 val
= this->u_
.od
->data_size();
1456 case DYNAMIC_SYMBOL
:
1458 const Sized_symbol
<size
>* s
=
1459 static_cast<const Sized_symbol
<size
>*>(this->u_
.sym
);
1464 case DYNAMIC_STRING
:
1465 val
= pool
->get_offset(this->u_
.str
);
1469 val
= this->u_
.od
->address() + this->offset_
;
1473 elfcpp::Dyn_write
<size
, big_endian
> dw(pov
);
1474 dw
.put_d_tag(this->tag_
);
1478 // Output_data_dynamic methods.
1480 // Adjust the output section to set the entry size.
1483 Output_data_dynamic::do_adjust_output_section(Output_section
* os
)
1485 if (parameters
->target().get_size() == 32)
1486 os
->set_entsize(elfcpp::Elf_sizes
<32>::dyn_size
);
1487 else if (parameters
->target().get_size() == 64)
1488 os
->set_entsize(elfcpp::Elf_sizes
<64>::dyn_size
);
1493 // Set the final data size.
1496 Output_data_dynamic::set_final_data_size()
1498 // Add the terminating entry.
1499 this->add_constant(elfcpp::DT_NULL
, 0);
1502 if (parameters
->target().get_size() == 32)
1503 dyn_size
= elfcpp::Elf_sizes
<32>::dyn_size
;
1504 else if (parameters
->target().get_size() == 64)
1505 dyn_size
= elfcpp::Elf_sizes
<64>::dyn_size
;
1508 this->set_data_size(this->entries_
.size() * dyn_size
);
1511 // Write out the dynamic entries.
1514 Output_data_dynamic::do_write(Output_file
* of
)
1516 switch (parameters
->size_and_endianness())
1518 #ifdef HAVE_TARGET_32_LITTLE
1519 case Parameters::TARGET_32_LITTLE
:
1520 this->sized_write
<32, false>(of
);
1523 #ifdef HAVE_TARGET_32_BIG
1524 case Parameters::TARGET_32_BIG
:
1525 this->sized_write
<32, true>(of
);
1528 #ifdef HAVE_TARGET_64_LITTLE
1529 case Parameters::TARGET_64_LITTLE
:
1530 this->sized_write
<64, false>(of
);
1533 #ifdef HAVE_TARGET_64_BIG
1534 case Parameters::TARGET_64_BIG
:
1535 this->sized_write
<64, true>(of
);
1543 template<int size
, bool big_endian
>
1545 Output_data_dynamic::sized_write(Output_file
* of
)
1547 const int dyn_size
= elfcpp::Elf_sizes
<size
>::dyn_size
;
1549 const off_t offset
= this->offset();
1550 const off_t oview_size
= this->data_size();
1551 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
1553 unsigned char* pov
= oview
;
1554 for (typename
Dynamic_entries::const_iterator p
= this->entries_
.begin();
1555 p
!= this->entries_
.end();
1558 p
->write
<size
, big_endian
>(pov
, this->pool_
);
1562 gold_assert(pov
- oview
== oview_size
);
1564 of
->write_output_view(offset
, oview_size
, oview
);
1566 // We no longer need the dynamic entries.
1567 this->entries_
.clear();
1570 // Class Output_symtab_xindex.
1573 Output_symtab_xindex::do_write(Output_file
* of
)
1575 const off_t offset
= this->offset();
1576 const off_t oview_size
= this->data_size();
1577 unsigned char* const oview
= of
->get_output_view(offset
, oview_size
);
1579 memset(oview
, 0, oview_size
);
1581 if (parameters
->target().is_big_endian())
1582 this->endian_do_write
<true>(oview
);
1584 this->endian_do_write
<false>(oview
);
1586 of
->write_output_view(offset
, oview_size
, oview
);
1588 // We no longer need the data.
1589 this->entries_
.clear();
1592 template<bool big_endian
>
1594 Output_symtab_xindex::endian_do_write(unsigned char* const oview
)
1596 for (Xindex_entries::const_iterator p
= this->entries_
.begin();
1597 p
!= this->entries_
.end();
1599 elfcpp::Swap
<32, big_endian
>::writeval(oview
+ p
->first
* 4, p
->second
);
1602 // Output_section::Input_section methods.
1604 // Return the data size. For an input section we store the size here.
1605 // For an Output_section_data, we have to ask it for the size.
1608 Output_section::Input_section::data_size() const
1610 if (this->is_input_section())
1611 return this->u1_
.data_size
;
1613 return this->u2_
.posd
->data_size();
1616 // Set the address and file offset.
1619 Output_section::Input_section::set_address_and_file_offset(
1622 off_t section_file_offset
)
1624 if (this->is_input_section())
1625 this->u2_
.object
->set_section_offset(this->shndx_
,
1626 file_offset
- section_file_offset
);
1628 this->u2_
.posd
->set_address_and_file_offset(address
, file_offset
);
1631 // Reset the address and file offset.
1634 Output_section::Input_section::reset_address_and_file_offset()
1636 if (!this->is_input_section())
1637 this->u2_
.posd
->reset_address_and_file_offset();
1640 // Finalize the data size.
1643 Output_section::Input_section::finalize_data_size()
1645 if (!this->is_input_section())
1646 this->u2_
.posd
->finalize_data_size();
1649 // Try to turn an input offset into an output offset. We want to
1650 // return the output offset relative to the start of this
1651 // Input_section in the output section.
1654 Output_section::Input_section::output_offset(
1655 const Relobj
* object
,
1657 section_offset_type offset
,
1658 section_offset_type
*poutput
) const
1660 if (!this->is_input_section())
1661 return this->u2_
.posd
->output_offset(object
, shndx
, offset
, poutput
);
1664 if (this->shndx_
!= shndx
|| this->u2_
.object
!= object
)
1671 // Return whether this is the merge section for the input section
1675 Output_section::Input_section::is_merge_section_for(const Relobj
* object
,
1676 unsigned int shndx
) const
1678 if (this->is_input_section())
1680 return this->u2_
.posd
->is_merge_section_for(object
, shndx
);
1683 // Write out the data. We don't have to do anything for an input
1684 // section--they are handled via Object::relocate--but this is where
1685 // we write out the data for an Output_section_data.
1688 Output_section::Input_section::write(Output_file
* of
)
1690 if (!this->is_input_section())
1691 this->u2_
.posd
->write(of
);
1694 // Write the data to a buffer. As for write(), we don't have to do
1695 // anything for an input section.
1698 Output_section::Input_section::write_to_buffer(unsigned char* buffer
)
1700 if (!this->is_input_section())
1701 this->u2_
.posd
->write_to_buffer(buffer
);
1704 // Output_section methods.
1706 // Construct an Output_section. NAME will point into a Stringpool.
1708 Output_section::Output_section(const char* name
, elfcpp::Elf_Word type
,
1709 elfcpp::Elf_Xword flags
)
1714 link_section_(NULL
),
1716 info_section_(NULL
),
1725 first_input_offset_(0),
1727 postprocessing_buffer_(NULL
),
1728 needs_symtab_index_(false),
1729 needs_dynsym_index_(false),
1730 should_link_to_symtab_(false),
1731 should_link_to_dynsym_(false),
1732 after_input_sections_(false),
1733 requires_postprocessing_(false),
1734 found_in_sections_clause_(false),
1735 has_load_address_(false),
1736 info_uses_section_index_(false),
1737 may_sort_attached_input_sections_(false),
1738 must_sort_attached_input_sections_(false),
1739 attached_input_sections_are_sorted_(false),
1742 // An unallocated section has no address. Forcing this means that
1743 // we don't need special treatment for symbols defined in debug
1745 if ((flags
& elfcpp::SHF_ALLOC
) == 0)
1746 this->set_address(0);
1749 Output_section::~Output_section()
1753 // Set the entry size.
1756 Output_section::set_entsize(uint64_t v
)
1758 if (this->entsize_
== 0)
1761 gold_assert(this->entsize_
== v
);
1764 // Add the input section SHNDX, with header SHDR, named SECNAME, in
1765 // OBJECT, to the Output_section. RELOC_SHNDX is the index of a
1766 // relocation section which applies to this section, or 0 if none, or
1767 // -1U if more than one. Return the offset of the input section
1768 // within the output section. Return -1 if the input section will
1769 // receive special handling. In the normal case we don't always keep
1770 // track of input sections for an Output_section. Instead, each
1771 // Object keeps track of the Output_section for each of its input
1772 // sections. However, if HAVE_SECTIONS_SCRIPT is true, we do keep
1773 // track of input sections here; this is used when SECTIONS appears in
1776 template<int size
, bool big_endian
>
1778 Output_section::add_input_section(Sized_relobj
<size
, big_endian
>* object
,
1780 const char* secname
,
1781 const elfcpp::Shdr
<size
, big_endian
>& shdr
,
1782 unsigned int reloc_shndx
,
1783 bool have_sections_script
)
1785 elfcpp::Elf_Xword addralign
= shdr
.get_sh_addralign();
1786 if ((addralign
& (addralign
- 1)) != 0)
1788 object
->error(_("invalid alignment %lu for section \"%s\""),
1789 static_cast<unsigned long>(addralign
), secname
);
1793 if (addralign
> this->addralign_
)
1794 this->addralign_
= addralign
;
1796 typename
elfcpp::Elf_types
<size
>::Elf_WXword sh_flags
= shdr
.get_sh_flags();
1797 this->update_flags_for_input_section(sh_flags
);
1799 uint64_t entsize
= shdr
.get_sh_entsize();
1801 // .debug_str is a mergeable string section, but is not always so
1802 // marked by compilers. Mark manually here so we can optimize.
1803 if (strcmp(secname
, ".debug_str") == 0)
1805 sh_flags
|= (elfcpp::SHF_MERGE
| elfcpp::SHF_STRINGS
);
1809 // If this is a SHF_MERGE section, we pass all the input sections to
1810 // a Output_data_merge. We don't try to handle relocations for such
1812 if ((sh_flags
& elfcpp::SHF_MERGE
) != 0
1813 && reloc_shndx
== 0)
1815 if (this->add_merge_input_section(object
, shndx
, sh_flags
,
1816 entsize
, addralign
))
1818 // Tell the relocation routines that they need to call the
1819 // output_offset method to determine the final address.
1824 off_t offset_in_section
= this->current_data_size_for_child();
1825 off_t aligned_offset_in_section
= align_address(offset_in_section
,
1828 if (aligned_offset_in_section
> offset_in_section
1829 && !have_sections_script
1830 && (sh_flags
& elfcpp::SHF_EXECINSTR
) != 0
1831 && object
->target()->has_code_fill())
1833 // We need to add some fill data. Using fill_list_ when
1834 // possible is an optimization, since we will often have fill
1835 // sections without input sections.
1836 off_t fill_len
= aligned_offset_in_section
- offset_in_section
;
1837 if (this->input_sections_
.empty())
1838 this->fills_
.push_back(Fill(offset_in_section
, fill_len
));
1841 // FIXME: When relaxing, the size needs to adjust to
1842 // maintain a constant alignment.
1843 std::string
fill_data(object
->target()->code_fill(fill_len
));
1844 Output_data_const
* odc
= new Output_data_const(fill_data
, 1);
1845 this->input_sections_
.push_back(Input_section(odc
));
1849 this->set_current_data_size_for_child(aligned_offset_in_section
1850 + shdr
.get_sh_size());
1852 // We need to keep track of this section if we are already keeping
1853 // track of sections, or if we are relaxing. Also, if this is a
1854 // section which requires sorting, or which may require sorting in
1855 // the future, we keep track of the sections. FIXME: Add test for
1857 if (have_sections_script
1858 || !this->input_sections_
.empty()
1859 || this->may_sort_attached_input_sections()
1860 || this->must_sort_attached_input_sections())
1861 this->input_sections_
.push_back(Input_section(object
, shndx
,
1865 return aligned_offset_in_section
;
1868 // Add arbitrary data to an output section.
1871 Output_section::add_output_section_data(Output_section_data
* posd
)
1873 Input_section
inp(posd
);
1874 this->add_output_section_data(&inp
);
1876 if (posd
->is_data_size_valid())
1878 off_t offset_in_section
= this->current_data_size_for_child();
1879 off_t aligned_offset_in_section
= align_address(offset_in_section
,
1881 this->set_current_data_size_for_child(aligned_offset_in_section
1882 + posd
->data_size());
1886 // Add arbitrary data to an output section by Input_section.
1889 Output_section::add_output_section_data(Input_section
* inp
)
1891 if (this->input_sections_
.empty())
1892 this->first_input_offset_
= this->current_data_size_for_child();
1894 this->input_sections_
.push_back(*inp
);
1896 uint64_t addralign
= inp
->addralign();
1897 if (addralign
> this->addralign_
)
1898 this->addralign_
= addralign
;
1900 inp
->set_output_section(this);
1903 // Add a merge section to an output section.
1906 Output_section::add_output_merge_section(Output_section_data
* posd
,
1907 bool is_string
, uint64_t entsize
)
1909 Input_section
inp(posd
, is_string
, entsize
);
1910 this->add_output_section_data(&inp
);
1913 // Add an input section to a SHF_MERGE section.
1916 Output_section::add_merge_input_section(Relobj
* object
, unsigned int shndx
,
1917 uint64_t flags
, uint64_t entsize
,
1920 bool is_string
= (flags
& elfcpp::SHF_STRINGS
) != 0;
1922 // We only merge strings if the alignment is not more than the
1923 // character size. This could be handled, but it's unusual.
1924 if (is_string
&& addralign
> entsize
)
1927 Input_section_list::iterator p
;
1928 for (p
= this->input_sections_
.begin();
1929 p
!= this->input_sections_
.end();
1931 if (p
->is_merge_section(is_string
, entsize
, addralign
))
1933 p
->add_input_section(object
, shndx
);
1937 // We handle the actual constant merging in Output_merge_data or
1938 // Output_merge_string_data.
1939 Output_section_data
* posd
;
1941 posd
= new Output_merge_data(entsize
, addralign
);
1947 posd
= new Output_merge_string
<char>(addralign
);
1950 posd
= new Output_merge_string
<uint16_t>(addralign
);
1953 posd
= new Output_merge_string
<uint32_t>(addralign
);
1960 this->add_output_merge_section(posd
, is_string
, entsize
);
1961 posd
->add_input_section(object
, shndx
);
1966 // Given an address OFFSET relative to the start of input section
1967 // SHNDX in OBJECT, return whether this address is being included in
1968 // the final link. This should only be called if SHNDX in OBJECT has
1969 // a special mapping.
1972 Output_section::is_input_address_mapped(const Relobj
* object
,
1976 gold_assert(object
->is_section_specially_mapped(shndx
));
1978 for (Input_section_list::const_iterator p
= this->input_sections_
.begin();
1979 p
!= this->input_sections_
.end();
1982 section_offset_type output_offset
;
1983 if (p
->output_offset(object
, shndx
, offset
, &output_offset
))
1984 return output_offset
!= -1;
1987 // By default we assume that the address is mapped. This should
1988 // only be called after we have passed all sections to Layout. At
1989 // that point we should know what we are discarding.
1993 // Given an address OFFSET relative to the start of input section
1994 // SHNDX in object OBJECT, return the output offset relative to the
1995 // start of the input section in the output section. This should only
1996 // be called if SHNDX in OBJECT has a special mapping.
1999 Output_section::output_offset(const Relobj
* object
, unsigned int shndx
,
2000 section_offset_type offset
) const
2002 gold_assert(object
->is_section_specially_mapped(shndx
));
2003 // This can only be called meaningfully when layout is complete.
2004 gold_assert(Output_data::is_layout_complete());
2006 for (Input_section_list::const_iterator p
= this->input_sections_
.begin();
2007 p
!= this->input_sections_
.end();
2010 section_offset_type output_offset
;
2011 if (p
->output_offset(object
, shndx
, offset
, &output_offset
))
2012 return output_offset
;
2017 // Return the output virtual address of OFFSET relative to the start
2018 // of input section SHNDX in object OBJECT.
2021 Output_section::output_address(const Relobj
* object
, unsigned int shndx
,
2024 gold_assert(object
->is_section_specially_mapped(shndx
));
2026 uint64_t addr
= this->address() + this->first_input_offset_
;
2027 for (Input_section_list::const_iterator p
= this->input_sections_
.begin();
2028 p
!= this->input_sections_
.end();
2031 addr
= align_address(addr
, p
->addralign());
2032 section_offset_type output_offset
;
2033 if (p
->output_offset(object
, shndx
, offset
, &output_offset
))
2035 if (output_offset
== -1)
2037 return addr
+ output_offset
;
2039 addr
+= p
->data_size();
2042 // If we get here, it means that we don't know the mapping for this
2043 // input section. This might happen in principle if
2044 // add_input_section were called before add_output_section_data.
2045 // But it should never actually happen.
2050 // Return the output address of the start of the merged section for
2051 // input section SHNDX in object OBJECT.
2054 Output_section::starting_output_address(const Relobj
* object
,
2055 unsigned int shndx
) const
2057 gold_assert(object
->is_section_specially_mapped(shndx
));
2059 uint64_t addr
= this->address() + this->first_input_offset_
;
2060 for (Input_section_list::const_iterator p
= this->input_sections_
.begin();
2061 p
!= this->input_sections_
.end();
2064 addr
= align_address(addr
, p
->addralign());
2066 // It would be nice if we could use the existing output_offset
2067 // method to get the output offset of input offset 0.
2068 // Unfortunately we don't know for sure that input offset 0 is
2070 if (p
->is_merge_section_for(object
, shndx
))
2073 addr
+= p
->data_size();
2078 // Set the data size of an Output_section. This is where we handle
2079 // setting the addresses of any Output_section_data objects.
2082 Output_section::set_final_data_size()
2084 if (this->input_sections_
.empty())
2086 this->set_data_size(this->current_data_size_for_child());
2090 if (this->must_sort_attached_input_sections())
2091 this->sort_attached_input_sections();
2093 uint64_t address
= this->address();
2094 off_t startoff
= this->offset();
2095 off_t off
= startoff
+ this->first_input_offset_
;
2096 for (Input_section_list::iterator p
= this->input_sections_
.begin();
2097 p
!= this->input_sections_
.end();
2100 off
= align_address(off
, p
->addralign());
2101 p
->set_address_and_file_offset(address
+ (off
- startoff
), off
,
2103 off
+= p
->data_size();
2106 this->set_data_size(off
- startoff
);
2109 // Reset the address and file offset.
2112 Output_section::do_reset_address_and_file_offset()
2114 for (Input_section_list::iterator p
= this->input_sections_
.begin();
2115 p
!= this->input_sections_
.end();
2117 p
->reset_address_and_file_offset();
2120 // Set the TLS offset. Called only for SHT_TLS sections.
2123 Output_section::do_set_tls_offset(uint64_t tls_base
)
2125 this->tls_offset_
= this->address() - tls_base
;
2128 // In a few cases we need to sort the input sections attached to an
2129 // output section. This is used to implement the type of constructor
2130 // priority ordering implemented by the GNU linker, in which the
2131 // priority becomes part of the section name and the sections are
2132 // sorted by name. We only do this for an output section if we see an
2133 // attached input section matching ".ctor.*", ".dtor.*",
2134 // ".init_array.*" or ".fini_array.*".
2136 class Output_section::Input_section_sort_entry
2139 Input_section_sort_entry()
2140 : input_section_(), index_(-1U), section_has_name_(false),
2144 Input_section_sort_entry(const Input_section
& input_section
,
2146 : input_section_(input_section
), index_(index
),
2147 section_has_name_(input_section
.is_input_section())
2149 if (this->section_has_name_
)
2151 // This is only called single-threaded from Layout::finalize,
2152 // so it is OK to lock. Unfortunately we have no way to pass
2154 const Task
* dummy_task
= reinterpret_cast<const Task
*>(-1);
2155 Object
* obj
= input_section
.relobj();
2156 Task_lock_obj
<Object
> tl(dummy_task
, obj
);
2158 // This is a slow operation, which should be cached in
2159 // Layout::layout if this becomes a speed problem.
2160 this->section_name_
= obj
->section_name(input_section
.shndx());
2164 // Return the Input_section.
2165 const Input_section
&
2166 input_section() const
2168 gold_assert(this->index_
!= -1U);
2169 return this->input_section_
;
2172 // The index of this entry in the original list. This is used to
2173 // make the sort stable.
2177 gold_assert(this->index_
!= -1U);
2178 return this->index_
;
2181 // Whether there is a section name.
2183 section_has_name() const
2184 { return this->section_has_name_
; }
2186 // The section name.
2188 section_name() const
2190 gold_assert(this->section_has_name_
);
2191 return this->section_name_
;
2194 // Return true if the section name has a priority. This is assumed
2195 // to be true if it has a dot after the initial dot.
2197 has_priority() const
2199 gold_assert(this->section_has_name_
);
2200 return this->section_name_
.find('.', 1);
2203 // Return true if this an input file whose base name matches
2204 // FILE_NAME. The base name must have an extension of ".o", and
2205 // must be exactly FILE_NAME.o or FILE_NAME, one character, ".o".
2206 // This is to match crtbegin.o as well as crtbeginS.o without
2207 // getting confused by other possibilities. Overall matching the
2208 // file name this way is a dreadful hack, but the GNU linker does it
2209 // in order to better support gcc, and we need to be compatible.
2211 match_file_name(const char* match_file_name
) const
2213 const std::string
& file_name(this->input_section_
.relobj()->name());
2214 const char* base_name
= lbasename(file_name
.c_str());
2215 size_t match_len
= strlen(match_file_name
);
2216 if (strncmp(base_name
, match_file_name
, match_len
) != 0)
2218 size_t base_len
= strlen(base_name
);
2219 if (base_len
!= match_len
+ 2 && base_len
!= match_len
+ 3)
2221 return memcmp(base_name
+ base_len
- 2, ".o", 2) == 0;
2225 // The Input_section we are sorting.
2226 Input_section input_section_
;
2227 // The index of this Input_section in the original list.
2228 unsigned int index_
;
2229 // Whether this Input_section has a section name--it won't if this
2230 // is some random Output_section_data.
2231 bool section_has_name_
;
2232 // The section name if there is one.
2233 std::string section_name_
;
2236 // Return true if S1 should come before S2 in the output section.
2239 Output_section::Input_section_sort_compare::operator()(
2240 const Output_section::Input_section_sort_entry
& s1
,
2241 const Output_section::Input_section_sort_entry
& s2
) const
2243 // crtbegin.o must come first.
2244 bool s1_begin
= s1
.match_file_name("crtbegin");
2245 bool s2_begin
= s2
.match_file_name("crtbegin");
2246 if (s1_begin
|| s2_begin
)
2252 return s1
.index() < s2
.index();
2255 // crtend.o must come last.
2256 bool s1_end
= s1
.match_file_name("crtend");
2257 bool s2_end
= s2
.match_file_name("crtend");
2258 if (s1_end
|| s2_end
)
2264 return s1
.index() < s2
.index();
2267 // We sort all the sections with no names to the end.
2268 if (!s1
.section_has_name() || !s2
.section_has_name())
2270 if (s1
.section_has_name())
2272 if (s2
.section_has_name())
2274 return s1
.index() < s2
.index();
2277 // A section with a priority follows a section without a priority.
2278 // The GNU linker does this for all but .init_array sections; until
2279 // further notice we'll assume that that is an mistake.
2280 bool s1_has_priority
= s1
.has_priority();
2281 bool s2_has_priority
= s2
.has_priority();
2282 if (s1_has_priority
&& !s2_has_priority
)
2284 if (!s1_has_priority
&& s2_has_priority
)
2287 // Otherwise we sort by name.
2288 int compare
= s1
.section_name().compare(s2
.section_name());
2292 // Otherwise we keep the input order.
2293 return s1
.index() < s2
.index();
2296 // Sort the input sections attached to an output section.
2299 Output_section::sort_attached_input_sections()
2301 if (this->attached_input_sections_are_sorted_
)
2304 // The only thing we know about an input section is the object and
2305 // the section index. We need the section name. Recomputing this
2306 // is slow but this is an unusual case. If this becomes a speed
2307 // problem we can cache the names as required in Layout::layout.
2309 // We start by building a larger vector holding a copy of each
2310 // Input_section, plus its current index in the list and its name.
2311 std::vector
<Input_section_sort_entry
> sort_list
;
2314 for (Input_section_list::iterator p
= this->input_sections_
.begin();
2315 p
!= this->input_sections_
.end();
2317 sort_list
.push_back(Input_section_sort_entry(*p
, i
));
2319 // Sort the input sections.
2320 std::sort(sort_list
.begin(), sort_list
.end(), Input_section_sort_compare());
2322 // Copy the sorted input sections back to our list.
2323 this->input_sections_
.clear();
2324 for (std::vector
<Input_section_sort_entry
>::iterator p
= sort_list
.begin();
2325 p
!= sort_list
.end();
2327 this->input_sections_
.push_back(p
->input_section());
2329 // Remember that we sorted the input sections, since we might get
2331 this->attached_input_sections_are_sorted_
= true;
2334 // Write the section header to *OSHDR.
2336 template<int size
, bool big_endian
>
2338 Output_section::write_header(const Layout
* layout
,
2339 const Stringpool
* secnamepool
,
2340 elfcpp::Shdr_write
<size
, big_endian
>* oshdr
) const
2342 oshdr
->put_sh_name(secnamepool
->get_offset(this->name_
));
2343 oshdr
->put_sh_type(this->type_
);
2345 elfcpp::Elf_Xword flags
= this->flags_
;
2346 if (this->info_section_
!= NULL
&& this->info_uses_section_index_
)
2347 flags
|= elfcpp::SHF_INFO_LINK
;
2348 oshdr
->put_sh_flags(flags
);
2350 oshdr
->put_sh_addr(this->address());
2351 oshdr
->put_sh_offset(this->offset());
2352 oshdr
->put_sh_size(this->data_size());
2353 if (this->link_section_
!= NULL
)
2354 oshdr
->put_sh_link(this->link_section_
->out_shndx());
2355 else if (this->should_link_to_symtab_
)
2356 oshdr
->put_sh_link(layout
->symtab_section()->out_shndx());
2357 else if (this->should_link_to_dynsym_
)
2358 oshdr
->put_sh_link(layout
->dynsym_section()->out_shndx());
2360 oshdr
->put_sh_link(this->link_
);
2362 elfcpp::Elf_Word info
;
2363 if (this->info_section_
!= NULL
)
2365 if (this->info_uses_section_index_
)
2366 info
= this->info_section_
->out_shndx();
2368 info
= this->info_section_
->symtab_index();
2370 else if (this->info_symndx_
!= NULL
)
2371 info
= this->info_symndx_
->symtab_index();
2374 oshdr
->put_sh_info(info
);
2376 oshdr
->put_sh_addralign(this->addralign_
);
2377 oshdr
->put_sh_entsize(this->entsize_
);
2380 // Write out the data. For input sections the data is written out by
2381 // Object::relocate, but we have to handle Output_section_data objects
2385 Output_section::do_write(Output_file
* of
)
2387 gold_assert(!this->requires_postprocessing());
2389 off_t output_section_file_offset
= this->offset();
2390 for (Fill_list::iterator p
= this->fills_
.begin();
2391 p
!= this->fills_
.end();
2394 std::string
fill_data(parameters
->target().code_fill(p
->length()));
2395 of
->write(output_section_file_offset
+ p
->section_offset(),
2396 fill_data
.data(), fill_data
.size());
2399 for (Input_section_list::iterator p
= this->input_sections_
.begin();
2400 p
!= this->input_sections_
.end();
2405 // If a section requires postprocessing, create the buffer to use.
2408 Output_section::create_postprocessing_buffer()
2410 gold_assert(this->requires_postprocessing());
2412 if (this->postprocessing_buffer_
!= NULL
)
2415 if (!this->input_sections_
.empty())
2417 off_t off
= this->first_input_offset_
;
2418 for (Input_section_list::iterator p
= this->input_sections_
.begin();
2419 p
!= this->input_sections_
.end();
2422 off
= align_address(off
, p
->addralign());
2423 p
->finalize_data_size();
2424 off
+= p
->data_size();
2426 this->set_current_data_size_for_child(off
);
2429 off_t buffer_size
= this->current_data_size_for_child();
2430 this->postprocessing_buffer_
= new unsigned char[buffer_size
];
2433 // Write all the data of an Output_section into the postprocessing
2434 // buffer. This is used for sections which require postprocessing,
2435 // such as compression. Input sections are handled by
2436 // Object::Relocate.
2439 Output_section::write_to_postprocessing_buffer()
2441 gold_assert(this->requires_postprocessing());
2443 unsigned char* buffer
= this->postprocessing_buffer();
2444 for (Fill_list::iterator p
= this->fills_
.begin();
2445 p
!= this->fills_
.end();
2448 std::string
fill_data(parameters
->target().code_fill(p
->length()));
2449 memcpy(buffer
+ p
->section_offset(), fill_data
.data(),
2453 off_t off
= this->first_input_offset_
;
2454 for (Input_section_list::iterator p
= this->input_sections_
.begin();
2455 p
!= this->input_sections_
.end();
2458 off
= align_address(off
, p
->addralign());
2459 p
->write_to_buffer(buffer
+ off
);
2460 off
+= p
->data_size();
2464 // Get the input sections for linker script processing. We leave
2465 // behind the Output_section_data entries. Note that this may be
2466 // slightly incorrect for merge sections. We will leave them behind,
2467 // but it is possible that the script says that they should follow
2468 // some other input sections, as in:
2469 // .rodata { *(.rodata) *(.rodata.cst*) }
2470 // For that matter, we don't handle this correctly:
2471 // .rodata { foo.o(.rodata.cst*) *(.rodata.cst*) }
2472 // With luck this will never matter.
2475 Output_section::get_input_sections(
2477 const std::string
& fill
,
2478 std::list
<std::pair
<Relobj
*, unsigned int> >* input_sections
)
2480 uint64_t orig_address
= address
;
2482 address
= align_address(address
, this->addralign());
2484 Input_section_list remaining
;
2485 for (Input_section_list::iterator p
= this->input_sections_
.begin();
2486 p
!= this->input_sections_
.end();
2489 if (p
->is_input_section())
2490 input_sections
->push_back(std::make_pair(p
->relobj(), p
->shndx()));
2493 uint64_t aligned_address
= align_address(address
, p
->addralign());
2494 if (aligned_address
!= address
&& !fill
.empty())
2496 section_size_type length
=
2497 convert_to_section_size_type(aligned_address
- address
);
2498 std::string this_fill
;
2499 this_fill
.reserve(length
);
2500 while (this_fill
.length() + fill
.length() <= length
)
2502 if (this_fill
.length() < length
)
2503 this_fill
.append(fill
, 0, length
- this_fill
.length());
2505 Output_section_data
* posd
= new Output_data_const(this_fill
, 0);
2506 remaining
.push_back(Input_section(posd
));
2508 address
= aligned_address
;
2510 remaining
.push_back(*p
);
2512 p
->finalize_data_size();
2513 address
+= p
->data_size();
2517 this->input_sections_
.swap(remaining
);
2518 this->first_input_offset_
= 0;
2520 uint64_t data_size
= address
- orig_address
;
2521 this->set_current_data_size_for_child(data_size
);
2525 // Add an input section from a script.
2528 Output_section::add_input_section_for_script(Relobj
* object
,
2533 if (addralign
> this->addralign_
)
2534 this->addralign_
= addralign
;
2536 off_t offset_in_section
= this->current_data_size_for_child();
2537 off_t aligned_offset_in_section
= align_address(offset_in_section
,
2540 this->set_current_data_size_for_child(aligned_offset_in_section
2543 this->input_sections_
.push_back(Input_section(object
, shndx
,
2544 data_size
, addralign
));
2547 // Print stats for merge sections to stderr.
2550 Output_section::print_merge_stats()
2552 Input_section_list::iterator p
;
2553 for (p
= this->input_sections_
.begin();
2554 p
!= this->input_sections_
.end();
2556 p
->print_merge_stats(this->name_
);
2559 // Output segment methods.
2561 Output_segment::Output_segment(elfcpp::Elf_Word type
, elfcpp::Elf_Word flags
)
2573 is_max_align_known_(false),
2574 are_addresses_set_(false)
2578 // Add an Output_section to an Output_segment.
2581 Output_segment::add_output_section(Output_section
* os
,
2582 elfcpp::Elf_Word seg_flags
,
2585 gold_assert((os
->flags() & elfcpp::SHF_ALLOC
) != 0);
2586 gold_assert(!this->is_max_align_known_
);
2588 // Update the segment flags.
2589 this->flags_
|= seg_flags
;
2591 Output_segment::Output_data_list
* pdl
;
2592 if (os
->type() == elfcpp::SHT_NOBITS
)
2593 pdl
= &this->output_bss_
;
2595 pdl
= &this->output_data_
;
2597 // So that PT_NOTE segments will work correctly, we need to ensure
2598 // that all SHT_NOTE sections are adjacent. This will normally
2599 // happen automatically, because all the SHT_NOTE input sections
2600 // will wind up in the same output section. However, it is possible
2601 // for multiple SHT_NOTE input sections to have different section
2602 // flags, and thus be in different output sections, but for the
2603 // different section flags to map into the same segment flags and
2604 // thus the same output segment.
2606 // Note that while there may be many input sections in an output
2607 // section, there are normally only a few output sections in an
2608 // output segment. This loop is expected to be fast.
2610 if (os
->type() == elfcpp::SHT_NOTE
&& !pdl
->empty())
2612 Output_segment::Output_data_list::iterator p
= pdl
->end();
2616 if ((*p
)->is_section_type(elfcpp::SHT_NOTE
))
2618 // We don't worry about the FRONT parameter.
2624 while (p
!= pdl
->begin());
2627 // Similarly, so that PT_TLS segments will work, we need to group
2628 // SHF_TLS sections. An SHF_TLS/SHT_NOBITS section is a special
2629 // case: we group the SHF_TLS/SHT_NOBITS sections right after the
2630 // SHF_TLS/SHT_PROGBITS sections. This lets us set up PT_TLS
2631 // correctly. SHF_TLS sections get added to both a PT_LOAD segment
2632 // and the PT_TLS segment -- we do this grouping only for the
2634 if (this->type_
!= elfcpp::PT_TLS
2635 && (os
->flags() & elfcpp::SHF_TLS
) != 0
2636 && !this->output_data_
.empty())
2638 pdl
= &this->output_data_
;
2639 bool nobits
= os
->type() == elfcpp::SHT_NOBITS
;
2640 bool sawtls
= false;
2641 Output_segment::Output_data_list::iterator p
= pdl
->end();
2646 if ((*p
)->is_section_flag_set(elfcpp::SHF_TLS
))
2649 // Put a NOBITS section after the first TLS section.
2650 // But a PROGBITS section after the first TLS/PROGBITS
2652 insert
= nobits
|| !(*p
)->is_section_type(elfcpp::SHT_NOBITS
);
2656 // If we've gone past the TLS sections, but we've seen a
2657 // TLS section, then we need to insert this section now.
2663 // We don't worry about the FRONT parameter.
2669 while (p
!= pdl
->begin());
2671 // There are no TLS sections yet; put this one at the requested
2672 // location in the section list.
2676 pdl
->push_front(os
);
2681 // Remove an Output_section from this segment. It is an error if it
2685 Output_segment::remove_output_section(Output_section
* os
)
2687 // We only need this for SHT_PROGBITS.
2688 gold_assert(os
->type() == elfcpp::SHT_PROGBITS
);
2689 for (Output_data_list::iterator p
= this->output_data_
.begin();
2690 p
!= this->output_data_
.end();
2695 this->output_data_
.erase(p
);
2702 // Add an Output_data (which is not an Output_section) to the start of
2706 Output_segment::add_initial_output_data(Output_data
* od
)
2708 gold_assert(!this->is_max_align_known_
);
2709 this->output_data_
.push_front(od
);
2712 // Return the maximum alignment of the Output_data in Output_segment.
2715 Output_segment::maximum_alignment()
2717 if (!this->is_max_align_known_
)
2721 addralign
= Output_segment::maximum_alignment_list(&this->output_data_
);
2722 if (addralign
> this->max_align_
)
2723 this->max_align_
= addralign
;
2725 addralign
= Output_segment::maximum_alignment_list(&this->output_bss_
);
2726 if (addralign
> this->max_align_
)
2727 this->max_align_
= addralign
;
2729 this->is_max_align_known_
= true;
2732 return this->max_align_
;
2735 // Return the maximum alignment of a list of Output_data.
2738 Output_segment::maximum_alignment_list(const Output_data_list
* pdl
)
2741 for (Output_data_list::const_iterator p
= pdl
->begin();
2745 uint64_t addralign
= (*p
)->addralign();
2746 if (addralign
> ret
)
2752 // Return the number of dynamic relocs applied to this segment.
2755 Output_segment::dynamic_reloc_count() const
2757 return (this->dynamic_reloc_count_list(&this->output_data_
)
2758 + this->dynamic_reloc_count_list(&this->output_bss_
));
2761 // Return the number of dynamic relocs applied to an Output_data_list.
2764 Output_segment::dynamic_reloc_count_list(const Output_data_list
* pdl
) const
2766 unsigned int count
= 0;
2767 for (Output_data_list::const_iterator p
= pdl
->begin();
2770 count
+= (*p
)->dynamic_reloc_count();
2774 // Set the section addresses for an Output_segment. If RESET is true,
2775 // reset the addresses first. ADDR is the address and *POFF is the
2776 // file offset. Set the section indexes starting with *PSHNDX.
2777 // Return the address of the immediately following segment. Update
2778 // *POFF and *PSHNDX.
2781 Output_segment::set_section_addresses(const Layout
* layout
, bool reset
,
2782 uint64_t addr
, off_t
* poff
,
2783 unsigned int* pshndx
)
2785 gold_assert(this->type_
== elfcpp::PT_LOAD
);
2787 if (!reset
&& this->are_addresses_set_
)
2789 gold_assert(this->paddr_
== addr
);
2790 addr
= this->vaddr_
;
2794 this->vaddr_
= addr
;
2795 this->paddr_
= addr
;
2796 this->are_addresses_set_
= true;
2799 bool in_tls
= false;
2801 off_t orig_off
= *poff
;
2802 this->offset_
= orig_off
;
2804 addr
= this->set_section_list_addresses(layout
, reset
, &this->output_data_
,
2805 addr
, poff
, pshndx
, &in_tls
);
2806 this->filesz_
= *poff
- orig_off
;
2810 uint64_t ret
= this->set_section_list_addresses(layout
, reset
,
2815 // If the last section was a TLS section, align upward to the
2816 // alignment of the TLS segment, so that the overall size of the TLS
2817 // segment is aligned.
2820 uint64_t segment_align
= layout
->tls_segment()->maximum_alignment();
2821 *poff
= align_address(*poff
, segment_align
);
2824 this->memsz_
= *poff
- orig_off
;
2826 // Ignore the file offset adjustments made by the BSS Output_data
2833 // Set the addresses and file offsets in a list of Output_data
2837 Output_segment::set_section_list_addresses(const Layout
* layout
, bool reset
,
2838 Output_data_list
* pdl
,
2839 uint64_t addr
, off_t
* poff
,
2840 unsigned int* pshndx
,
2843 off_t startoff
= *poff
;
2845 off_t off
= startoff
;
2846 for (Output_data_list::iterator p
= pdl
->begin();
2851 (*p
)->reset_address_and_file_offset();
2853 // When using a linker script the section will most likely
2854 // already have an address.
2855 if (!(*p
)->is_address_valid())
2857 uint64_t align
= (*p
)->addralign();
2859 if ((*p
)->is_section_flag_set(elfcpp::SHF_TLS
))
2861 // Give the first TLS section the alignment of the
2862 // entire TLS segment. Otherwise the TLS segment as a
2863 // whole may be misaligned.
2866 Output_segment
* tls_segment
= layout
->tls_segment();
2867 gold_assert(tls_segment
!= NULL
);
2868 uint64_t segment_align
= tls_segment
->maximum_alignment();
2869 gold_assert(segment_align
>= align
);
2870 align
= segment_align
;
2877 // If this is the first section after the TLS segment,
2878 // align it to at least the alignment of the TLS
2879 // segment, so that the size of the overall TLS segment
2883 uint64_t segment_align
=
2884 layout
->tls_segment()->maximum_alignment();
2885 if (segment_align
> align
)
2886 align
= segment_align
;
2892 off
= align_address(off
, align
);
2893 (*p
)->set_address_and_file_offset(addr
+ (off
- startoff
), off
);
2897 // The script may have inserted a skip forward, but it
2898 // better not have moved backward.
2899 gold_assert((*p
)->address() >= addr
+ (off
- startoff
));
2900 off
+= (*p
)->address() - (addr
+ (off
- startoff
));
2901 (*p
)->set_file_offset(off
);
2902 (*p
)->finalize_data_size();
2905 // We want to ignore the size of a SHF_TLS or SHT_NOBITS
2906 // section. Such a section does not affect the size of a
2908 if (!(*p
)->is_section_flag_set(elfcpp::SHF_TLS
)
2909 || !(*p
)->is_section_type(elfcpp::SHT_NOBITS
))
2910 off
+= (*p
)->data_size();
2912 if ((*p
)->is_section())
2914 (*p
)->set_out_shndx(*pshndx
);
2920 return addr
+ (off
- startoff
);
2923 // For a non-PT_LOAD segment, set the offset from the sections, if
2927 Output_segment::set_offset()
2929 gold_assert(this->type_
!= elfcpp::PT_LOAD
);
2931 gold_assert(!this->are_addresses_set_
);
2933 if (this->output_data_
.empty() && this->output_bss_
.empty())
2937 this->are_addresses_set_
= true;
2939 this->min_p_align_
= 0;
2945 const Output_data
* first
;
2946 if (this->output_data_
.empty())
2947 first
= this->output_bss_
.front();
2949 first
= this->output_data_
.front();
2950 this->vaddr_
= first
->address();
2951 this->paddr_
= (first
->has_load_address()
2952 ? first
->load_address()
2954 this->are_addresses_set_
= true;
2955 this->offset_
= first
->offset();
2957 if (this->output_data_
.empty())
2961 const Output_data
* last_data
= this->output_data_
.back();
2962 this->filesz_
= (last_data
->address()
2963 + last_data
->data_size()
2967 const Output_data
* last
;
2968 if (this->output_bss_
.empty())
2969 last
= this->output_data_
.back();
2971 last
= this->output_bss_
.back();
2972 this->memsz_
= (last
->address()
2976 // If this is a TLS segment, align the memory size. The code in
2977 // set_section_list ensures that the section after the TLS segment
2978 // is aligned to give us room.
2979 if (this->type_
== elfcpp::PT_TLS
)
2981 uint64_t segment_align
= this->maximum_alignment();
2982 gold_assert(this->vaddr_
== align_address(this->vaddr_
, segment_align
));
2983 this->memsz_
= align_address(this->memsz_
, segment_align
);
2987 // Set the TLS offsets of the sections in the PT_TLS segment.
2990 Output_segment::set_tls_offsets()
2992 gold_assert(this->type_
== elfcpp::PT_TLS
);
2994 for (Output_data_list::iterator p
= this->output_data_
.begin();
2995 p
!= this->output_data_
.end();
2997 (*p
)->set_tls_offset(this->vaddr_
);
2999 for (Output_data_list::iterator p
= this->output_bss_
.begin();
3000 p
!= this->output_bss_
.end();
3002 (*p
)->set_tls_offset(this->vaddr_
);
3005 // Return the address of the first section.
3008 Output_segment::first_section_load_address() const
3010 for (Output_data_list::const_iterator p
= this->output_data_
.begin();
3011 p
!= this->output_data_
.end();
3013 if ((*p
)->is_section())
3014 return (*p
)->has_load_address() ? (*p
)->load_address() : (*p
)->address();
3016 for (Output_data_list::const_iterator p
= this->output_bss_
.begin();
3017 p
!= this->output_bss_
.end();
3019 if ((*p
)->is_section())
3020 return (*p
)->has_load_address() ? (*p
)->load_address() : (*p
)->address();
3025 // Return the number of Output_sections in an Output_segment.
3028 Output_segment::output_section_count() const
3030 return (this->output_section_count_list(&this->output_data_
)
3031 + this->output_section_count_list(&this->output_bss_
));
3034 // Return the number of Output_sections in an Output_data_list.
3037 Output_segment::output_section_count_list(const Output_data_list
* pdl
) const
3039 unsigned int count
= 0;
3040 for (Output_data_list::const_iterator p
= pdl
->begin();
3044 if ((*p
)->is_section())
3050 // Return the section attached to the list segment with the lowest
3051 // load address. This is used when handling a PHDRS clause in a
3055 Output_segment::section_with_lowest_load_address() const
3057 Output_section
* found
= NULL
;
3058 uint64_t found_lma
= 0;
3059 this->lowest_load_address_in_list(&this->output_data_
, &found
, &found_lma
);
3061 Output_section
* found_data
= found
;
3062 this->lowest_load_address_in_list(&this->output_bss_
, &found
, &found_lma
);
3063 if (found
!= found_data
&& found_data
!= NULL
)
3065 gold_error(_("nobits section %s may not precede progbits section %s "
3067 found
->name(), found_data
->name());
3074 // Look through a list for a section with a lower load address.
3077 Output_segment::lowest_load_address_in_list(const Output_data_list
* pdl
,
3078 Output_section
** found
,
3079 uint64_t* found_lma
) const
3081 for (Output_data_list::const_iterator p
= pdl
->begin();
3085 if (!(*p
)->is_section())
3087 Output_section
* os
= static_cast<Output_section
*>(*p
);
3088 uint64_t lma
= (os
->has_load_address()
3089 ? os
->load_address()
3091 if (*found
== NULL
|| lma
< *found_lma
)
3099 // Write the segment data into *OPHDR.
3101 template<int size
, bool big_endian
>
3103 Output_segment::write_header(elfcpp::Phdr_write
<size
, big_endian
>* ophdr
)
3105 ophdr
->put_p_type(this->type_
);
3106 ophdr
->put_p_offset(this->offset_
);
3107 ophdr
->put_p_vaddr(this->vaddr_
);
3108 ophdr
->put_p_paddr(this->paddr_
);
3109 ophdr
->put_p_filesz(this->filesz_
);
3110 ophdr
->put_p_memsz(this->memsz_
);
3111 ophdr
->put_p_flags(this->flags_
);
3112 ophdr
->put_p_align(std::max(this->min_p_align_
, this->maximum_alignment()));
3115 // Write the section headers into V.
3117 template<int size
, bool big_endian
>
3119 Output_segment::write_section_headers(const Layout
* layout
,
3120 const Stringpool
* secnamepool
,
3122 unsigned int *pshndx
) const
3124 // Every section that is attached to a segment must be attached to a
3125 // PT_LOAD segment, so we only write out section headers for PT_LOAD
3127 if (this->type_
!= elfcpp::PT_LOAD
)
3130 v
= this->write_section_headers_list
<size
, big_endian
>(layout
, secnamepool
,
3131 &this->output_data_
,
3133 v
= this->write_section_headers_list
<size
, big_endian
>(layout
, secnamepool
,
3139 template<int size
, bool big_endian
>
3141 Output_segment::write_section_headers_list(const Layout
* layout
,
3142 const Stringpool
* secnamepool
,
3143 const Output_data_list
* pdl
,
3145 unsigned int* pshndx
) const
3147 const int shdr_size
= elfcpp::Elf_sizes
<size
>::shdr_size
;
3148 for (Output_data_list::const_iterator p
= pdl
->begin();
3152 if ((*p
)->is_section())
3154 const Output_section
* ps
= static_cast<const Output_section
*>(*p
);
3155 gold_assert(*pshndx
== ps
->out_shndx());
3156 elfcpp::Shdr_write
<size
, big_endian
> oshdr(v
);
3157 ps
->write_header(layout
, secnamepool
, &oshdr
);
3165 // Output_file methods.
3167 Output_file::Output_file(const char* name
)
3172 map_is_anonymous_(false),
3173 is_temporary_(false)
3177 // Open the output file.
3180 Output_file::open(off_t file_size
)
3182 this->file_size_
= file_size
;
3184 // Unlink the file first; otherwise the open() may fail if the file
3185 // is busy (e.g. it's an executable that's currently being executed).
3187 // However, the linker may be part of a system where a zero-length
3188 // file is created for it to write to, with tight permissions (gcc
3189 // 2.95 did something like this). Unlinking the file would work
3190 // around those permission controls, so we only unlink if the file
3191 // has a non-zero size. We also unlink only regular files to avoid
3192 // trouble with directories/etc.
3194 // If we fail, continue; this command is merely a best-effort attempt
3195 // to improve the odds for open().
3197 // We let the name "-" mean "stdout"
3198 if (!this->is_temporary_
)
3200 if (strcmp(this->name_
, "-") == 0)
3201 this->o_
= STDOUT_FILENO
;
3205 if (::stat(this->name_
, &s
) == 0 && s
.st_size
!= 0)
3206 unlink_if_ordinary(this->name_
);
3208 int mode
= parameters
->options().relocatable() ? 0666 : 0777;
3209 int o
= ::open(this->name_
, O_RDWR
| O_CREAT
| O_TRUNC
, mode
);
3211 gold_fatal(_("%s: open: %s"), this->name_
, strerror(errno
));
3219 // Resize the output file.
3222 Output_file::resize(off_t file_size
)
3224 // If the mmap is mapping an anonymous memory buffer, this is easy:
3225 // just mremap to the new size. If it's mapping to a file, we want
3226 // to unmap to flush to the file, then remap after growing the file.
3227 if (this->map_is_anonymous_
)
3229 void* base
= ::mremap(this->base_
, this->file_size_
, file_size
,
3231 if (base
== MAP_FAILED
)
3232 gold_fatal(_("%s: mremap: %s"), this->name_
, strerror(errno
));
3233 this->base_
= static_cast<unsigned char*>(base
);
3234 this->file_size_
= file_size
;
3239 this->file_size_
= file_size
;
3244 // Map the file into memory.
3249 const int o
= this->o_
;
3251 // If the output file is not a regular file, don't try to mmap it;
3252 // instead, we'll mmap a block of memory (an anonymous buffer), and
3253 // then later write the buffer to the file.
3255 struct stat statbuf
;
3256 if (o
== STDOUT_FILENO
|| o
== STDERR_FILENO
3257 || ::fstat(o
, &statbuf
) != 0
3258 || !S_ISREG(statbuf
.st_mode
)
3259 || this->is_temporary_
)
3261 this->map_is_anonymous_
= true;
3262 base
= ::mmap(NULL
, this->file_size_
, PROT_READ
| PROT_WRITE
,
3263 MAP_PRIVATE
| MAP_ANONYMOUS
, -1, 0);
3267 // Write out one byte to make the file the right size.
3268 if (::lseek(o
, this->file_size_
- 1, SEEK_SET
) < 0)
3269 gold_fatal(_("%s: lseek: %s"), this->name_
, strerror(errno
));
3271 if (::write(o
, &b
, 1) != 1)
3272 gold_fatal(_("%s: write: %s"), this->name_
, strerror(errno
));
3274 // Map the file into memory.
3275 this->map_is_anonymous_
= false;
3276 base
= ::mmap(NULL
, this->file_size_
, PROT_READ
| PROT_WRITE
,
3279 if (base
== MAP_FAILED
)
3280 gold_fatal(_("%s: mmap: %s"), this->name_
, strerror(errno
));
3281 this->base_
= static_cast<unsigned char*>(base
);
3284 // Unmap the file from memory.
3287 Output_file::unmap()
3289 if (::munmap(this->base_
, this->file_size_
) < 0)
3290 gold_error(_("%s: munmap: %s"), this->name_
, strerror(errno
));
3294 // Close the output file.
3297 Output_file::close()
3299 // If the map isn't file-backed, we need to write it now.
3300 if (this->map_is_anonymous_
&& !this->is_temporary_
)
3302 size_t bytes_to_write
= this->file_size_
;
3303 while (bytes_to_write
> 0)
3305 ssize_t bytes_written
= ::write(this->o_
, this->base_
, bytes_to_write
);
3306 if (bytes_written
== 0)
3307 gold_error(_("%s: write: unexpected 0 return-value"), this->name_
);
3308 else if (bytes_written
< 0)
3309 gold_error(_("%s: write: %s"), this->name_
, strerror(errno
));
3311 bytes_to_write
-= bytes_written
;
3316 // We don't close stdout or stderr
3317 if (this->o_
!= STDOUT_FILENO
3318 && this->o_
!= STDERR_FILENO
3319 && !this->is_temporary_
)
3320 if (::close(this->o_
) < 0)
3321 gold_error(_("%s: close: %s"), this->name_
, strerror(errno
));
3325 // Instantiate the templates we need. We could use the configure
3326 // script to restrict this to only the ones for implemented targets.
3328 #ifdef HAVE_TARGET_32_LITTLE
3331 Output_section::add_input_section
<32, false>(
3332 Sized_relobj
<32, false>* object
,
3334 const char* secname
,
3335 const elfcpp::Shdr
<32, false>& shdr
,
3336 unsigned int reloc_shndx
,
3337 bool have_sections_script
);
3340 #ifdef HAVE_TARGET_32_BIG
3343 Output_section::add_input_section
<32, true>(
3344 Sized_relobj
<32, true>* object
,
3346 const char* secname
,
3347 const elfcpp::Shdr
<32, true>& shdr
,
3348 unsigned int reloc_shndx
,
3349 bool have_sections_script
);
3352 #ifdef HAVE_TARGET_64_LITTLE
3355 Output_section::add_input_section
<64, false>(
3356 Sized_relobj
<64, false>* object
,
3358 const char* secname
,
3359 const elfcpp::Shdr
<64, false>& shdr
,
3360 unsigned int reloc_shndx
,
3361 bool have_sections_script
);
3364 #ifdef HAVE_TARGET_64_BIG
3367 Output_section::add_input_section
<64, true>(
3368 Sized_relobj
<64, true>* object
,
3370 const char* secname
,
3371 const elfcpp::Shdr
<64, true>& shdr
,
3372 unsigned int reloc_shndx
,
3373 bool have_sections_script
);
3376 #ifdef HAVE_TARGET_32_LITTLE
3378 class Output_data_reloc
<elfcpp::SHT_REL
, false, 32, false>;
3381 #ifdef HAVE_TARGET_32_BIG
3383 class Output_data_reloc
<elfcpp::SHT_REL
, false, 32, true>;
3386 #ifdef HAVE_TARGET_64_LITTLE
3388 class Output_data_reloc
<elfcpp::SHT_REL
, false, 64, false>;
3391 #ifdef HAVE_TARGET_64_BIG
3393 class Output_data_reloc
<elfcpp::SHT_REL
, false, 64, true>;
3396 #ifdef HAVE_TARGET_32_LITTLE
3398 class Output_data_reloc
<elfcpp::SHT_REL
, true, 32, false>;
3401 #ifdef HAVE_TARGET_32_BIG
3403 class Output_data_reloc
<elfcpp::SHT_REL
, true, 32, true>;
3406 #ifdef HAVE_TARGET_64_LITTLE
3408 class Output_data_reloc
<elfcpp::SHT_REL
, true, 64, false>;
3411 #ifdef HAVE_TARGET_64_BIG
3413 class Output_data_reloc
<elfcpp::SHT_REL
, true, 64, true>;
3416 #ifdef HAVE_TARGET_32_LITTLE
3418 class Output_data_reloc
<elfcpp::SHT_RELA
, false, 32, false>;
3421 #ifdef HAVE_TARGET_32_BIG
3423 class Output_data_reloc
<elfcpp::SHT_RELA
, false, 32, true>;
3426 #ifdef HAVE_TARGET_64_LITTLE
3428 class Output_data_reloc
<elfcpp::SHT_RELA
, false, 64, false>;
3431 #ifdef HAVE_TARGET_64_BIG
3433 class Output_data_reloc
<elfcpp::SHT_RELA
, false, 64, true>;
3436 #ifdef HAVE_TARGET_32_LITTLE
3438 class Output_data_reloc
<elfcpp::SHT_RELA
, true, 32, false>;
3441 #ifdef HAVE_TARGET_32_BIG
3443 class Output_data_reloc
<elfcpp::SHT_RELA
, true, 32, true>;
3446 #ifdef HAVE_TARGET_64_LITTLE
3448 class Output_data_reloc
<elfcpp::SHT_RELA
, true, 64, false>;
3451 #ifdef HAVE_TARGET_64_BIG
3453 class Output_data_reloc
<elfcpp::SHT_RELA
, true, 64, true>;
3456 #ifdef HAVE_TARGET_32_LITTLE
3458 class Output_relocatable_relocs
<elfcpp::SHT_REL
, 32, false>;
3461 #ifdef HAVE_TARGET_32_BIG
3463 class Output_relocatable_relocs
<elfcpp::SHT_REL
, 32, true>;
3466 #ifdef HAVE_TARGET_64_LITTLE
3468 class Output_relocatable_relocs
<elfcpp::SHT_REL
, 64, false>;
3471 #ifdef HAVE_TARGET_64_BIG
3473 class Output_relocatable_relocs
<elfcpp::SHT_REL
, 64, true>;
3476 #ifdef HAVE_TARGET_32_LITTLE
3478 class Output_relocatable_relocs
<elfcpp::SHT_RELA
, 32, false>;
3481 #ifdef HAVE_TARGET_32_BIG
3483 class Output_relocatable_relocs
<elfcpp::SHT_RELA
, 32, true>;
3486 #ifdef HAVE_TARGET_64_LITTLE
3488 class Output_relocatable_relocs
<elfcpp::SHT_RELA
, 64, false>;
3491 #ifdef HAVE_TARGET_64_BIG
3493 class Output_relocatable_relocs
<elfcpp::SHT_RELA
, 64, true>;
3496 #ifdef HAVE_TARGET_32_LITTLE
3498 class Output_data_group
<32, false>;
3501 #ifdef HAVE_TARGET_32_BIG
3503 class Output_data_group
<32, true>;
3506 #ifdef HAVE_TARGET_64_LITTLE
3508 class Output_data_group
<64, false>;
3511 #ifdef HAVE_TARGET_64_BIG
3513 class Output_data_group
<64, true>;
3516 #ifdef HAVE_TARGET_32_LITTLE
3518 class Output_data_got
<32, false>;
3521 #ifdef HAVE_TARGET_32_BIG
3523 class Output_data_got
<32, true>;
3526 #ifdef HAVE_TARGET_64_LITTLE
3528 class Output_data_got
<64, false>;
3531 #ifdef HAVE_TARGET_64_BIG
3533 class Output_data_got
<64, true>;
3536 } // End namespace gold.