1 // layout.h -- lay out output file sections for gold -*- C++ -*-
3 // Copyright 2006, 2007, 2008, 2009 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 "workqueue.h"
36 #include "stringpool.h"
41 class General_options
;
42 class Incremental_inputs
;
46 class Output_section_data
;
48 class Output_section_headers
;
51 class Output_data_dynamic
;
52 class Output_symtab_xindex
;
53 class Output_reduced_debug_abbrev_section
;
54 class Output_reduced_debug_info_section
;
58 // This task function handles mapping the input sections to output
59 // sections and laying them out in memory.
61 class Layout_task_runner
: public Task_function_runner
64 // OPTIONS is the command line options, INPUT_OBJECTS is the list of
65 // input objects, SYMTAB is the symbol table, LAYOUT is the layout
67 Layout_task_runner(const General_options
& options
,
68 const Input_objects
* input_objects
,
73 : options_(options
), input_objects_(input_objects
), symtab_(symtab
),
74 target_(target
), layout_(layout
), mapfile_(mapfile
)
79 run(Workqueue
*, const Task
*);
82 Layout_task_runner(const Layout_task_runner
&);
83 Layout_task_runner
& operator=(const Layout_task_runner
&);
85 const General_options
& options_
;
86 const Input_objects
* input_objects_
;
87 Symbol_table
* symtab_
;
93 // This struct holds information about the comdat or .gnu.linkonce
99 : object(NULL
), shndx(0), is_group(false), group_sections(NULL
)
101 Kept_section(Relobj
* a_object
, unsigned int a_shndx
, bool a_is_group
)
102 : object(a_object
), shndx(a_shndx
), is_group(a_is_group
),
106 typedef Unordered_map
<std::string
, unsigned int> Comdat_group
;
108 // The object containing the comdat or .gnu.linkonce.
110 // Index to the group section for comdats and the section itself for
113 // The Kept_sections are values of a mapping, that maps names to
114 // them. This field is true if this struct is associated with the
115 // name of a comdat or .gnu.linkonce, false if it is associated with
116 // the name of a symbol obtained from the .gnu.linkonce.* name
117 // through some heuristics.
119 // For comdats, a map from names of the sections in the group to
120 // indexes in OBJECT_. NULL for .gnu.linkonce.
121 Comdat_group
* group_sections
;
124 // This class handles the details of laying out input sections.
129 Layout(int number_of_input_files
, Script_options
*);
131 // Given an input section SHNDX, named NAME, with data in SHDR, from
132 // the object file OBJECT, return the output section where this
133 // input section should go. RELOC_SHNDX is the index of a
134 // relocation section which applies to this section, or 0 if none,
135 // or -1U if more than one. RELOC_TYPE is the type of the
136 // relocation section if there is one. Set *OFFSET to the offset
137 // within the output section.
138 template<int size
, bool big_endian
>
140 layout(Sized_relobj
<size
, big_endian
> *object
, unsigned int shndx
,
141 const char* name
, const elfcpp::Shdr
<size
, big_endian
>& shdr
,
142 unsigned int reloc_shndx
, unsigned int reloc_type
, off_t
* offset
);
144 // Layout an input reloc section when doing a relocatable link. The
145 // section is RELOC_SHNDX in OBJECT, with data in SHDR.
146 // DATA_SECTION is the reloc section to which it refers. RR is the
147 // relocatable information.
148 template<int size
, bool big_endian
>
150 layout_reloc(Sized_relobj
<size
, big_endian
>* object
,
151 unsigned int reloc_shndx
,
152 const elfcpp::Shdr
<size
, big_endian
>& shdr
,
153 Output_section
* data_section
,
154 Relocatable_relocs
* rr
);
156 // Layout a group section when doing a relocatable link.
157 template<int size
, bool big_endian
>
159 layout_group(Symbol_table
* symtab
,
160 Sized_relobj
<size
, big_endian
>* object
,
161 unsigned int group_shndx
,
162 const char* group_section_name
,
163 const char* signature
,
164 const elfcpp::Shdr
<size
, big_endian
>& shdr
,
165 elfcpp::Elf_Word flags
,
166 std::vector
<unsigned int>* shndxes
);
168 // Like layout, only for exception frame sections. OBJECT is an
169 // object file. SYMBOLS is the contents of the symbol table
170 // section, with size SYMBOLS_SIZE. SYMBOL_NAMES is the contents of
171 // the symbol name section, with size SYMBOL_NAMES_SIZE. SHNDX is a
172 // .eh_frame section in OBJECT. SHDR is the section header.
173 // RELOC_SHNDX is the index of a relocation section which applies to
174 // this section, or 0 if none, or -1U if more than one. RELOC_TYPE
175 // is the type of the relocation section if there is one. This
176 // returns the output section, and sets *OFFSET to the offset.
177 template<int size
, bool big_endian
>
179 layout_eh_frame(Sized_relobj
<size
, big_endian
>* object
,
180 const unsigned char* symbols
,
182 const unsigned char* symbol_names
,
183 off_t symbol_names_size
,
185 const elfcpp::Shdr
<size
, big_endian
>& shdr
,
186 unsigned int reloc_shndx
, unsigned int reloc_type
,
189 // Handle a GNU stack note. This is called once per input object
190 // file. SEEN_GNU_STACK is true if the object file has a
191 // .note.GNU-stack section. GNU_STACK_FLAGS is the section flags
192 // from that section if there was one.
194 layout_gnu_stack(bool seen_gnu_stack
, uint64_t gnu_stack_flags
);
196 // Add an Output_section_data to the layout. This is used for
197 // special sections like the GOT section.
199 add_output_section_data(const char* name
, elfcpp::Elf_Word type
,
200 elfcpp::Elf_Xword flags
,
201 Output_section_data
*);
203 // Create dynamic sections if necessary.
205 create_initial_dynamic_sections(Symbol_table
*);
207 // Define __start and __stop symbols for output sections.
209 define_section_symbols(Symbol_table
*);
211 // Create sections for linker scripts.
213 create_script_sections()
214 { this->script_options_
->create_script_sections(this); }
216 // Define symbols from any linker script.
218 define_script_symbols(Symbol_table
* symtab
)
219 { this->script_options_
->add_symbols_to_table(symtab
); }
221 // Define symbols for group signatures.
223 define_group_signatures(Symbol_table
*);
225 // Return the Stringpool used for symbol names.
228 { return &this->sympool_
; }
230 // Return the Stringpool used for dynamic symbol names and dynamic
234 { return &this->dynpool_
; }
236 // Return the symtab_xindex section used to hold large section
237 // indexes for the normal symbol table.
238 Output_symtab_xindex
*
239 symtab_xindex() const
240 { return this->symtab_xindex_
; }
242 // Return the dynsym_xindex section used to hold large section
243 // indexes for the dynamic symbol table.
244 Output_symtab_xindex
*
245 dynsym_xindex() const
246 { return this->dynsym_xindex_
; }
248 // Return whether a section is a .gnu.linkonce section, given the
251 is_linkonce(const char* name
)
252 { return strncmp(name
, ".gnu.linkonce", sizeof(".gnu.linkonce") - 1) == 0; }
254 // Return true if a section is a debugging section.
256 is_debug_info_section(const char* name
)
258 // Debugging sections can only be recognized by name.
259 return (strncmp(name
, ".debug", sizeof(".debug") - 1) == 0
260 || strncmp(name
, ".gnu.linkonce.wi.",
261 sizeof(".gnu.linkonce.wi.") - 1) == 0
262 || strncmp(name
, ".line", sizeof(".line") - 1) == 0
263 || strncmp(name
, ".stab", sizeof(".stab") - 1) == 0);
266 // Check if a comdat group or .gnu.linkonce section with the given
267 // NAME is selected for the link. If there is already a section,
268 // *KEPT_SECTION is set to point to the signature and the function
269 // returns false. Otherwise, the CANDIDATE signature is recorded
270 // for this NAME in the layout object, *KEPT_SECTION is set to the
271 // internal copy and the function return false. In some cases, with
272 // CANDIDATE->GROUP_ being false, KEPT_SECTION can point back to
275 find_or_add_kept_section(const std::string
& name
,
276 Kept_section
* candidate
,
277 Kept_section
** kept_section
);
279 // Find the given comdat signature, and return the object and section
280 // index of the kept group.
282 find_kept_object(const std::string
&, unsigned int*) const;
284 // Finalize the layout after all the input sections have been added.
286 finalize(const Input_objects
*, Symbol_table
*, Target
*, const Task
*);
288 // Return whether any sections require postprocessing.
290 any_postprocessing_sections() const
291 { return this->any_postprocessing_sections_
; }
293 // Return the size of the output file.
295 output_file_size() const
296 { return this->output_file_size_
; }
298 // Return the TLS segment. This will return NULL if there isn't
302 { return this->tls_segment_
; }
304 // Return the normal symbol table.
306 symtab_section() const
308 gold_assert(this->symtab_section_
!= NULL
);
309 return this->symtab_section_
;
312 // Return the dynamic symbol table.
314 dynsym_section() const
316 gold_assert(this->dynsym_section_
!= NULL
);
317 return this->dynsym_section_
;
320 // Return the dynamic tags.
323 { return this->dynamic_data_
; }
325 // Write out the output sections.
327 write_output_sections(Output_file
* of
) const;
329 // Write out data not associated with an input file or the symbol
332 write_data(const Symbol_table
*, Output_file
*) const;
334 // Write out output sections which can not be written until all the
335 // input sections are complete.
337 write_sections_after_input_sections(Output_file
* of
);
339 // Return an output section named NAME, or NULL if there is none.
341 find_output_section(const char* name
) const;
343 // Return an output segment of type TYPE, with segment flags SET set
344 // and segment flags CLEAR clear. Return NULL if there is none.
346 find_output_segment(elfcpp::PT type
, elfcpp::Elf_Word set
,
347 elfcpp::Elf_Word clear
) const;
349 // Return the number of segments we expect to produce.
351 expected_segment_count() const;
353 // Set a flag to indicate that an object file uses the static TLS model.
356 { this->has_static_tls_
= true; }
358 // Return true if any object file uses the static TLS model.
360 has_static_tls() const
361 { return this->has_static_tls_
; }
363 // Return the options which may be set by a linker script.
366 { return this->script_options_
; }
368 const Script_options
*
369 script_options() const
370 { return this->script_options_
; }
372 // Return the object managing inputs in incremental build. NULL in
373 // non-incremental builds.
376 { return this->incremental_inputs_
; }
378 // Compute and write out the build ID if needed.
380 write_build_id(Output_file
*) const;
382 // Rewrite output file in binary format.
384 write_binary(Output_file
* in
) const;
386 // Print output sections to the map file.
388 print_to_mapfile(Mapfile
*) const;
390 // Dump statistical information to stderr.
394 // A list of segments.
396 typedef std::vector
<Output_segment
*> Segment_list
;
398 // A list of sections.
400 typedef std::vector
<Output_section
*> Section_list
;
402 // The list of information to write out which is not attached to
403 // either a section or a segment.
404 typedef std::vector
<Output_data
*> Data_list
;
406 // Store the allocated sections into the section list. This is used
407 // by the linker script code.
409 get_allocated_sections(Section_list
*) const;
411 // Make a section for a linker script to hold data.
413 make_output_section_for_script(const char* name
);
415 // Make a segment. This is used by the linker script code.
417 make_output_segment(elfcpp::Elf_Word type
, elfcpp::Elf_Word flags
);
419 // Return the number of segments.
421 segment_count() const
422 { return this->segment_list_
.size(); }
424 // Map from section flags to segment flags.
425 static elfcpp::Elf_Word
426 section_flags_to_segment(elfcpp::Elf_Xword flags
);
428 // Attach sections to segments.
430 attach_sections_to_segments();
433 Layout(const Layout
&);
434 Layout
& operator=(const Layout
&);
436 // Mapping from .gnu.linkonce section names to output section names.
437 struct Linkonce_mapping
444 static const Linkonce_mapping linkonce_mapping
[];
445 static const int linkonce_mapping_count
;
447 // During a relocatable link, a list of group sections and
449 struct Group_signature
451 // The group section.
452 Output_section
* section
;
454 const char* signature
;
457 : section(NULL
), signature(NULL
)
460 Group_signature(Output_section
* sectiona
, const char* signaturea
)
461 : section(sectiona
), signature(signaturea
)
464 typedef std::vector
<Group_signature
> Group_signatures
;
466 // Create a note section, filling in the header.
468 create_note(const char* name
, int note_type
, const char *section_name
,
469 size_t descsz
, bool allocate
, size_t* trailing_padding
);
471 // Create a note section for gold version.
475 // Record whether the stack must be executable.
477 create_executable_stack_info(const Target
*);
479 // Create a build ID note if needed.
483 // Create .gnu_incremental_inputs and .gnu_incremental_strtab sections needed
484 // for the next run of incremental linking to check what has changed.
486 create_incremental_info_sections();
488 // Find the first read-only PT_LOAD segment, creating one if
491 find_first_load_seg();
493 // Count the local symbols in the regular symbol table and the dynamic
494 // symbol table, and build the respective string pools.
496 count_local_symbols(const Task
*, const Input_objects
*);
498 // Create the output sections for the symbol table.
500 create_symtab_sections(const Input_objects
*, Symbol_table
*,
501 unsigned int, off_t
*);
503 // Create the .shstrtab section.
507 // Create the section header table.
509 create_shdrs(const Output_section
* shstrtab_section
, off_t
*);
511 // Create the dynamic symbol table.
513 create_dynamic_symtab(const Input_objects
*, Symbol_table
*,
514 Output_section
** pdynstr
,
515 unsigned int* plocal_dynamic_count
,
516 std::vector
<Symbol
*>* pdynamic_symbols
,
519 // Assign offsets to each local portion of the dynamic symbol table.
521 assign_local_dynsym_offsets(const Input_objects
*);
523 // Finish the .dynamic section and PT_DYNAMIC segment.
525 finish_dynamic_section(const Input_objects
*, const Symbol_table
*);
527 // Create the .interp section and PT_INTERP segment.
529 create_interp(const Target
* target
);
531 // Create the version sections.
533 create_version_sections(const Versions
*,
535 unsigned int local_symcount
,
536 const std::vector
<Symbol
*>& dynamic_symbols
,
537 const Output_section
* dynstr
);
539 template<int size
, bool big_endian
>
541 sized_create_version_sections(const Versions
* versions
,
543 unsigned int local_symcount
,
544 const std::vector
<Symbol
*>& dynamic_symbols
,
545 const Output_section
* dynstr
);
547 // Return whether to include this section in the link.
548 template<int size
, bool big_endian
>
550 include_section(Sized_relobj
<size
, big_endian
>* object
, const char* name
,
551 const elfcpp::Shdr
<size
, big_endian
>&);
553 // Return the output section name to use given an input section
554 // name. Set *PLEN to the length of the name. *PLEN must be
555 // initialized to the length of NAME.
557 output_section_name(const char* name
, size_t* plen
);
559 // Return the output section name to use for a linkonce section
560 // name. PLEN is as for output_section_name.
562 linkonce_output_name(const char* name
, size_t* plen
);
564 // Return the number of allocated output sections.
566 allocated_output_section_count() const;
568 // Return the output section for NAME, TYPE and FLAGS.
570 get_output_section(const char* name
, Stringpool::Key name_key
,
571 elfcpp::Elf_Word type
, elfcpp::Elf_Xword flags
);
573 // Choose the output section for NAME in RELOBJ.
575 choose_output_section(const Relobj
* relobj
, const char* name
,
576 elfcpp::Elf_Word type
, elfcpp::Elf_Xword flags
,
577 bool is_input_section
);
579 // Create a new Output_section.
581 make_output_section(const char* name
, elfcpp::Elf_Word type
,
582 elfcpp::Elf_Xword flags
);
584 // Attach a section to a segment.
586 attach_section_to_segment(Output_section
*);
588 // Attach an allocated section to a segment.
590 attach_allocated_section_to_segment(Output_section
*);
592 // Set the final file offsets of all the segments.
594 set_segment_offsets(const Target
*, Output_segment
*, unsigned int* pshndx
);
596 // Set the file offsets of the sections when doing a relocatable
599 set_relocatable_section_offsets(Output_data
*, unsigned int* pshndx
);
601 // Set the final file offsets of all the sections not associated
602 // with a segment. We set section offsets in three passes: the
603 // first handles all allocated sections, the second sections that
604 // require postprocessing, and the last the late-bound STRTAB
605 // sections (probably only shstrtab, which is the one we care about
606 // because it holds section names).
607 enum Section_offset_pass
609 BEFORE_INPUT_SECTIONS_PASS
,
610 POSTPROCESSING_SECTIONS_PASS
,
611 STRTAB_AFTER_POSTPROCESSING_SECTIONS_PASS
614 set_section_offsets(off_t
, Section_offset_pass pass
);
616 // Set the final section indexes of all the sections not associated
617 // with a segment. Returns the next unused index.
619 set_section_indexes(unsigned int pshndx
);
621 // Set the section addresses when using a script.
623 set_section_addresses_from_script(Symbol_table
*);
625 // Return whether SEG1 comes before SEG2 in the output file.
627 segment_precedes(const Output_segment
* seg1
, const Output_segment
* seg2
);
629 // A mapping used for kept comdats/.gnu.linkonce group signatures.
630 typedef Unordered_map
<std::string
, Kept_section
> Signatures
;
632 // Mapping from input section name/type/flags to output section. We
633 // use canonicalized strings here.
635 typedef std::pair
<Stringpool::Key
,
636 std::pair
<elfcpp::Elf_Word
, elfcpp::Elf_Xword
> > Key
;
641 operator()(const Key
& k
) const;
644 typedef Unordered_map
<Key
, Output_section
*, Hash_key
> Section_name_map
;
646 // A comparison class for segments.
648 struct Compare_segments
651 operator()(const Output_segment
* seg1
, const Output_segment
* seg2
)
652 { return Layout::segment_precedes(seg1
, seg2
); }
655 // The number of input files, for sizing tables.
656 int number_of_input_files_
;
657 // Information set by scripts or by command line options.
658 Script_options
* script_options_
;
659 // The output section names.
660 Stringpool namepool_
;
661 // The output symbol names.
663 // The dynamic strings, if needed.
665 // The list of group sections and linkonce sections which we have seen.
666 Signatures signatures_
;
667 // The mapping from input section name/type/flags to output sections.
668 Section_name_map section_name_map_
;
669 // The list of output segments.
670 Segment_list segment_list_
;
671 // The list of output sections.
672 Section_list section_list_
;
673 // The list of output sections which are not attached to any output
675 Section_list unattached_section_list_
;
676 // The list of unattached Output_data objects which require special
677 // handling because they are not Output_sections.
678 Data_list special_output_list_
;
679 // The section headers.
680 Output_section_headers
* section_headers_
;
681 // A pointer to the PT_TLS segment if there is one.
682 Output_segment
* tls_segment_
;
683 // A pointer to the PT_GNU_RELRO segment if there is one.
684 Output_segment
* relro_segment_
;
685 // The SHT_SYMTAB output section.
686 Output_section
* symtab_section_
;
687 // The SHT_SYMTAB_SHNDX for the regular symbol table if there is one.
688 Output_symtab_xindex
* symtab_xindex_
;
689 // The SHT_DYNSYM output section if there is one.
690 Output_section
* dynsym_section_
;
691 // The SHT_SYMTAB_SHNDX for the dynamic symbol table if there is one.
692 Output_symtab_xindex
* dynsym_xindex_
;
693 // The SHT_DYNAMIC output section if there is one.
694 Output_section
* dynamic_section_
;
695 // The dynamic data which goes into dynamic_section_.
696 Output_data_dynamic
* dynamic_data_
;
697 // The exception frame output section if there is one.
698 Output_section
* eh_frame_section_
;
699 // The exception frame data for eh_frame_section_.
700 Eh_frame
* eh_frame_data_
;
701 // Whether we have added eh_frame_data_ to the .eh_frame section.
702 bool added_eh_frame_data_
;
703 // The exception frame header output section if there is one.
704 Output_section
* eh_frame_hdr_section_
;
705 // The space for the build ID checksum if there is one.
706 Output_section_data
* build_id_note_
;
707 // The output section containing dwarf abbreviations
708 Output_reduced_debug_abbrev_section
* debug_abbrev_
;
709 // The output section containing the dwarf debug info tree
710 Output_reduced_debug_info_section
* debug_info_
;
711 // A list of group sections and their signatures.
712 Group_signatures group_signatures_
;
713 // The size of the output file.
714 off_t output_file_size_
;
715 // Whether we have attached the sections to the segments.
716 bool sections_are_attached_
;
717 // Whether we have seen an object file marked to require an
719 bool input_requires_executable_stack_
;
720 // Whether we have seen at least one object file with an executable
722 bool input_with_gnu_stack_note_
;
723 // Whether we have seen at least one object file without an
724 // executable stack marker.
725 bool input_without_gnu_stack_note_
;
726 // Whether we have seen an object file that uses the static TLS model.
727 bool has_static_tls_
;
728 // Whether any sections require postprocessing.
729 bool any_postprocessing_sections_
;
730 // Whether we have resized the signatures_ hash table.
731 bool resized_signatures_
;
732 // In incremental build, holds information check the inputs and build the
733 // .gnu_incremental_inputs section.
734 Incremental_inputs
* incremental_inputs_
;
737 // This task handles writing out data in output sections which is not
738 // part of an input section, or which requires special handling. When
739 // this is done, it unblocks both output_sections_blocker and
742 class Write_sections_task
: public Task
745 Write_sections_task(const Layout
* layout
, Output_file
* of
,
746 Task_token
* output_sections_blocker
,
747 Task_token
* final_blocker
)
748 : layout_(layout
), of_(of
),
749 output_sections_blocker_(output_sections_blocker
),
750 final_blocker_(final_blocker
)
753 // The standard Task methods.
766 { return "Write_sections_task"; }
769 class Write_sections_locker
;
771 const Layout
* layout_
;
773 Task_token
* output_sections_blocker_
;
774 Task_token
* final_blocker_
;
777 // This task handles writing out data which is not part of a section
780 class Write_data_task
: public Task
783 Write_data_task(const Layout
* layout
, const Symbol_table
* symtab
,
784 Output_file
* of
, Task_token
* final_blocker
)
785 : layout_(layout
), symtab_(symtab
), of_(of
), final_blocker_(final_blocker
)
788 // The standard Task methods.
801 { return "Write_data_task"; }
804 const Layout
* layout_
;
805 const Symbol_table
* symtab_
;
807 Task_token
* final_blocker_
;
810 // This task handles writing out the global symbols.
812 class Write_symbols_task
: public Task
815 Write_symbols_task(const Layout
* layout
, const Symbol_table
* symtab
,
816 const Input_objects
* input_objects
,
817 const Stringpool
* sympool
, const Stringpool
* dynpool
,
818 Output_file
* of
, Task_token
* final_blocker
)
819 : layout_(layout
), symtab_(symtab
), input_objects_(input_objects
),
820 sympool_(sympool
), dynpool_(dynpool
), of_(of
),
821 final_blocker_(final_blocker
)
824 // The standard Task methods.
837 { return "Write_symbols_task"; }
840 const Layout
* layout_
;
841 const Symbol_table
* symtab_
;
842 const Input_objects
* input_objects_
;
843 const Stringpool
* sympool_
;
844 const Stringpool
* dynpool_
;
846 Task_token
* final_blocker_
;
849 // This task handles writing out data in output sections which can't
850 // be written out until all the input sections have been handled.
851 // This is for sections whose contents is based on the contents of
852 // other output sections.
854 class Write_after_input_sections_task
: public Task
857 Write_after_input_sections_task(Layout
* layout
, Output_file
* of
,
858 Task_token
* input_sections_blocker
,
859 Task_token
* final_blocker
)
860 : layout_(layout
), of_(of
),
861 input_sections_blocker_(input_sections_blocker
),
862 final_blocker_(final_blocker
)
865 // The standard Task methods.
878 { return "Write_after_input_sections_task"; }
883 Task_token
* input_sections_blocker_
;
884 Task_token
* final_blocker_
;
887 // This task function handles closing the file.
889 class Close_task_runner
: public Task_function_runner
892 Close_task_runner(const General_options
* options
, const Layout
* layout
,
894 : options_(options
), layout_(layout
), of_(of
)
897 // Run the operation.
899 run(Workqueue
*, const Task
*);
902 const General_options
* options_
;
903 const Layout
* layout_
;
907 // A small helper function to align an address.
910 align_address(uint64_t address
, uint64_t addralign
)
913 address
= (address
+ addralign
- 1) &~ (addralign
- 1);
917 } // End namespace gold.
919 #endif // !defined(GOLD_LAYOUT_H)