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 automatic note sections.
215 // Create sections for linker scripts.
217 create_script_sections()
218 { this->script_options_
->create_script_sections(this); }
220 // Define symbols from any linker script.
222 define_script_symbols(Symbol_table
* symtab
)
223 { this->script_options_
->add_symbols_to_table(symtab
); }
225 // Define symbols for group signatures.
227 define_group_signatures(Symbol_table
*);
229 // Return the Stringpool used for symbol names.
232 { return &this->sympool_
; }
234 // Return the Stringpool used for dynamic symbol names and dynamic
238 { return &this->dynpool_
; }
240 // Return the symtab_xindex section used to hold large section
241 // indexes for the normal symbol table.
242 Output_symtab_xindex
*
243 symtab_xindex() const
244 { return this->symtab_xindex_
; }
246 // Return the dynsym_xindex section used to hold large section
247 // indexes for the dynamic symbol table.
248 Output_symtab_xindex
*
249 dynsym_xindex() const
250 { return this->dynsym_xindex_
; }
252 // Return whether a section is a .gnu.linkonce section, given the
255 is_linkonce(const char* name
)
256 { return strncmp(name
, ".gnu.linkonce", sizeof(".gnu.linkonce") - 1) == 0; }
258 // Return true if a section is a debugging section.
260 is_debug_info_section(const char* name
)
262 // Debugging sections can only be recognized by name.
263 return (strncmp(name
, ".debug", sizeof(".debug") - 1) == 0
264 || strncmp(name
, ".gnu.linkonce.wi.",
265 sizeof(".gnu.linkonce.wi.") - 1) == 0
266 || strncmp(name
, ".line", sizeof(".line") - 1) == 0
267 || strncmp(name
, ".stab", sizeof(".stab") - 1) == 0);
270 // Check if a comdat group or .gnu.linkonce section with the given
271 // NAME is selected for the link. If there is already a section,
272 // *KEPT_SECTION is set to point to the signature and the function
273 // returns false. Otherwise, the CANDIDATE signature is recorded
274 // for this NAME in the layout object, *KEPT_SECTION is set to the
275 // internal copy and the function return false. In some cases, with
276 // CANDIDATE->GROUP_ being false, KEPT_SECTION can point back to
279 find_or_add_kept_section(const std::string
& name
,
280 Kept_section
* candidate
,
281 Kept_section
** kept_section
);
283 // Find the given comdat signature, and return the object and section
284 // index of the kept group.
286 find_kept_object(const std::string
&, unsigned int*) const;
288 // Finalize the layout after all the input sections have been added.
290 finalize(const Input_objects
*, Symbol_table
*, Target
*, const Task
*);
292 // Return whether any sections require postprocessing.
294 any_postprocessing_sections() const
295 { return this->any_postprocessing_sections_
; }
297 // Return the size of the output file.
299 output_file_size() const
300 { return this->output_file_size_
; }
302 // Return the TLS segment. This will return NULL if there isn't
306 { return this->tls_segment_
; }
308 // Return the normal symbol table.
310 symtab_section() const
312 gold_assert(this->symtab_section_
!= NULL
);
313 return this->symtab_section_
;
316 // Return the dynamic symbol table.
318 dynsym_section() const
320 gold_assert(this->dynsym_section_
!= NULL
);
321 return this->dynsym_section_
;
324 // Return the dynamic tags.
327 { return this->dynamic_data_
; }
329 // Write out the output sections.
331 write_output_sections(Output_file
* of
) const;
333 // Write out data not associated with an input file or the symbol
336 write_data(const Symbol_table
*, Output_file
*) const;
338 // Write out output sections which can not be written until all the
339 // input sections are complete.
341 write_sections_after_input_sections(Output_file
* of
);
343 // Return an output section named NAME, or NULL if there is none.
345 find_output_section(const char* name
) const;
347 // Return an output segment of type TYPE, with segment flags SET set
348 // and segment flags CLEAR clear. Return NULL if there is none.
350 find_output_segment(elfcpp::PT type
, elfcpp::Elf_Word set
,
351 elfcpp::Elf_Word clear
) const;
353 // Return the number of segments we expect to produce.
355 expected_segment_count() const;
357 // Set a flag to indicate that an object file uses the static TLS model.
360 { this->has_static_tls_
= true; }
362 // Return true if any object file uses the static TLS model.
364 has_static_tls() const
365 { return this->has_static_tls_
; }
367 // Return the options which may be set by a linker script.
370 { return this->script_options_
; }
372 const Script_options
*
373 script_options() const
374 { return this->script_options_
; }
376 // Return the object managing inputs in incremental build. NULL in
377 // non-incremental builds.
380 { return this->incremental_inputs_
; }
382 // Compute and write out the build ID if needed.
384 write_build_id(Output_file
*) const;
386 // Rewrite output file in binary format.
388 write_binary(Output_file
* in
) const;
390 // Print output sections to the map file.
392 print_to_mapfile(Mapfile
*) const;
394 // Dump statistical information to stderr.
398 // A list of segments.
400 typedef std::vector
<Output_segment
*> Segment_list
;
402 // A list of sections.
404 typedef std::vector
<Output_section
*> Section_list
;
406 // The list of information to write out which is not attached to
407 // either a section or a segment.
408 typedef std::vector
<Output_data
*> Data_list
;
410 // Store the allocated sections into the section list. This is used
411 // by the linker script code.
413 get_allocated_sections(Section_list
*) const;
415 // Make a section for a linker script to hold data.
417 make_output_section_for_script(const char* name
);
419 // Make a segment. This is used by the linker script code.
421 make_output_segment(elfcpp::Elf_Word type
, elfcpp::Elf_Word flags
);
423 // Return the number of segments.
425 segment_count() const
426 { return this->segment_list_
.size(); }
428 // Map from section flags to segment flags.
429 static elfcpp::Elf_Word
430 section_flags_to_segment(elfcpp::Elf_Xword flags
);
432 // Attach sections to segments.
434 attach_sections_to_segments();
437 Layout(const Layout
&);
438 Layout
& operator=(const Layout
&);
440 // Mapping from input section names to output section names.
441 struct Section_name_mapping
448 static const Section_name_mapping section_name_mapping
[];
449 static const int section_name_mapping_count
;
451 // During a relocatable link, a list of group sections and
453 struct Group_signature
455 // The group section.
456 Output_section
* section
;
458 const char* signature
;
461 : section(NULL
), signature(NULL
)
464 Group_signature(Output_section
* sectiona
, const char* signaturea
)
465 : section(sectiona
), signature(signaturea
)
468 typedef std::vector
<Group_signature
> Group_signatures
;
470 // Create a note section, filling in the header.
472 create_note(const char* name
, int note_type
, const char *section_name
,
473 size_t descsz
, bool allocate
, size_t* trailing_padding
);
475 // Create a note section for gold version.
479 // Record whether the stack must be executable.
481 create_executable_stack_info();
483 // Create a build ID note if needed.
487 // Link .stab and .stabstr sections.
489 link_stabs_sections();
491 // Create .gnu_incremental_inputs and .gnu_incremental_strtab sections needed
492 // for the next run of incremental linking to check what has changed.
494 create_incremental_info_sections();
496 // Find the first read-only PT_LOAD segment, creating one if
499 find_first_load_seg();
501 // Count the local symbols in the regular symbol table and the dynamic
502 // symbol table, and build the respective string pools.
504 count_local_symbols(const Task
*, const Input_objects
*);
506 // Create the output sections for the symbol table.
508 create_symtab_sections(const Input_objects
*, Symbol_table
*,
509 unsigned int, off_t
*);
511 // Create the .shstrtab section.
515 // Create the section header table.
517 create_shdrs(const Output_section
* shstrtab_section
, off_t
*);
519 // Create the dynamic symbol table.
521 create_dynamic_symtab(const Input_objects
*, Symbol_table
*,
522 Output_section
** pdynstr
,
523 unsigned int* plocal_dynamic_count
,
524 std::vector
<Symbol
*>* pdynamic_symbols
,
527 // Assign offsets to each local portion of the dynamic symbol table.
529 assign_local_dynsym_offsets(const Input_objects
*);
531 // Finish the .dynamic section and PT_DYNAMIC segment.
533 finish_dynamic_section(const Input_objects
*, const Symbol_table
*);
535 // Create the .interp section and PT_INTERP segment.
537 create_interp(const Target
* target
);
539 // Create the version sections.
541 create_version_sections(const Versions
*,
543 unsigned int local_symcount
,
544 const std::vector
<Symbol
*>& dynamic_symbols
,
545 const Output_section
* dynstr
);
547 template<int size
, bool big_endian
>
549 sized_create_version_sections(const Versions
* versions
,
551 unsigned int local_symcount
,
552 const std::vector
<Symbol
*>& dynamic_symbols
,
553 const Output_section
* dynstr
);
555 // Return whether to include this section in the link.
556 template<int size
, bool big_endian
>
558 include_section(Sized_relobj
<size
, big_endian
>* object
, const char* name
,
559 const elfcpp::Shdr
<size
, big_endian
>&);
561 // Return the output section name to use given an input section
562 // name. Set *PLEN to the length of the name. *PLEN must be
563 // initialized to the length of NAME.
565 output_section_name(const char* name
, size_t* plen
);
567 // Return the number of allocated output sections.
569 allocated_output_section_count() const;
571 // Return the output section for NAME, TYPE and FLAGS.
573 get_output_section(const char* name
, Stringpool::Key name_key
,
574 elfcpp::Elf_Word type
, elfcpp::Elf_Xword flags
);
576 // Choose the output section for NAME in RELOBJ.
578 choose_output_section(const Relobj
* relobj
, const char* name
,
579 elfcpp::Elf_Word type
, elfcpp::Elf_Xword flags
,
580 bool is_input_section
);
582 // Create a new Output_section.
584 make_output_section(const char* name
, elfcpp::Elf_Word type
,
585 elfcpp::Elf_Xword flags
);
587 // Attach a section to a segment.
589 attach_section_to_segment(Output_section
*);
591 // Attach an allocated section to a segment.
593 attach_allocated_section_to_segment(Output_section
*);
595 // Set the final file offsets of all the segments.
597 set_segment_offsets(const Target
*, Output_segment
*, unsigned int* pshndx
);
599 // Set the file offsets of the sections when doing a relocatable
602 set_relocatable_section_offsets(Output_data
*, unsigned int* pshndx
);
604 // Set the final file offsets of all the sections not associated
605 // with a segment. We set section offsets in three passes: the
606 // first handles all allocated sections, the second sections that
607 // require postprocessing, and the last the late-bound STRTAB
608 // sections (probably only shstrtab, which is the one we care about
609 // because it holds section names).
610 enum Section_offset_pass
612 BEFORE_INPUT_SECTIONS_PASS
,
613 POSTPROCESSING_SECTIONS_PASS
,
614 STRTAB_AFTER_POSTPROCESSING_SECTIONS_PASS
617 set_section_offsets(off_t
, Section_offset_pass pass
);
619 // Set the final section indexes of all the sections not associated
620 // with a segment. Returns the next unused index.
622 set_section_indexes(unsigned int pshndx
);
624 // Set the section addresses when using a script.
626 set_section_addresses_from_script(Symbol_table
*);
628 // Return whether SEG1 comes before SEG2 in the output file.
630 segment_precedes(const Output_segment
* seg1
, const Output_segment
* seg2
);
632 // A mapping used for kept comdats/.gnu.linkonce group signatures.
633 typedef Unordered_map
<std::string
, Kept_section
> Signatures
;
635 // Mapping from input section name/type/flags to output section. We
636 // use canonicalized strings here.
638 typedef std::pair
<Stringpool::Key
,
639 std::pair
<elfcpp::Elf_Word
, elfcpp::Elf_Xword
> > Key
;
644 operator()(const Key
& k
) const;
647 typedef Unordered_map
<Key
, Output_section
*, Hash_key
> Section_name_map
;
649 // A comparison class for segments.
651 struct Compare_segments
654 operator()(const Output_segment
* seg1
, const Output_segment
* seg2
)
655 { return Layout::segment_precedes(seg1
, seg2
); }
658 // The number of input files, for sizing tables.
659 int number_of_input_files_
;
660 // Information set by scripts or by command line options.
661 Script_options
* script_options_
;
662 // The output section names.
663 Stringpool namepool_
;
664 // The output symbol names.
666 // The dynamic strings, if needed.
668 // The list of group sections and linkonce sections which we have seen.
669 Signatures signatures_
;
670 // The mapping from input section name/type/flags to output sections.
671 Section_name_map section_name_map_
;
672 // The list of output segments.
673 Segment_list segment_list_
;
674 // The list of output sections.
675 Section_list section_list_
;
676 // The list of output sections which are not attached to any output
678 Section_list unattached_section_list_
;
679 // The list of unattached Output_data objects which require special
680 // handling because they are not Output_sections.
681 Data_list special_output_list_
;
682 // The section headers.
683 Output_section_headers
* section_headers_
;
684 // A pointer to the PT_TLS segment if there is one.
685 Output_segment
* tls_segment_
;
686 // A pointer to the PT_GNU_RELRO segment if there is one.
687 Output_segment
* relro_segment_
;
688 // The SHT_SYMTAB output section.
689 Output_section
* symtab_section_
;
690 // The SHT_SYMTAB_SHNDX for the regular symbol table if there is one.
691 Output_symtab_xindex
* symtab_xindex_
;
692 // The SHT_DYNSYM output section if there is one.
693 Output_section
* dynsym_section_
;
694 // The SHT_SYMTAB_SHNDX for the dynamic symbol table if there is one.
695 Output_symtab_xindex
* dynsym_xindex_
;
696 // The SHT_DYNAMIC output section if there is one.
697 Output_section
* dynamic_section_
;
698 // The dynamic data which goes into dynamic_section_.
699 Output_data_dynamic
* dynamic_data_
;
700 // The exception frame output section if there is one.
701 Output_section
* eh_frame_section_
;
702 // The exception frame data for eh_frame_section_.
703 Eh_frame
* eh_frame_data_
;
704 // Whether we have added eh_frame_data_ to the .eh_frame section.
705 bool added_eh_frame_data_
;
706 // The exception frame header output section if there is one.
707 Output_section
* eh_frame_hdr_section_
;
708 // The space for the build ID checksum if there is one.
709 Output_section_data
* build_id_note_
;
710 // The output section containing dwarf abbreviations
711 Output_reduced_debug_abbrev_section
* debug_abbrev_
;
712 // The output section containing the dwarf debug info tree
713 Output_reduced_debug_info_section
* debug_info_
;
714 // A list of group sections and their signatures.
715 Group_signatures group_signatures_
;
716 // The size of the output file.
717 off_t output_file_size_
;
718 // Whether we have attached the sections to the segments.
719 bool sections_are_attached_
;
720 // Whether we have seen an object file marked to require an
722 bool input_requires_executable_stack_
;
723 // Whether we have seen at least one object file with an executable
725 bool input_with_gnu_stack_note_
;
726 // Whether we have seen at least one object file without an
727 // executable stack marker.
728 bool input_without_gnu_stack_note_
;
729 // Whether we have seen an object file that uses the static TLS model.
730 bool has_static_tls_
;
731 // Whether any sections require postprocessing.
732 bool any_postprocessing_sections_
;
733 // Whether we have resized the signatures_ hash table.
734 bool resized_signatures_
;
735 // Whether we have created a .stab*str output section.
736 bool have_stabstr_section_
;
737 // In incremental build, holds information check the inputs and build the
738 // .gnu_incremental_inputs section.
739 Incremental_inputs
* incremental_inputs_
;
742 // This task handles writing out data in output sections which is not
743 // part of an input section, or which requires special handling. When
744 // this is done, it unblocks both output_sections_blocker and
747 class Write_sections_task
: public Task
750 Write_sections_task(const Layout
* layout
, Output_file
* of
,
751 Task_token
* output_sections_blocker
,
752 Task_token
* final_blocker
)
753 : layout_(layout
), of_(of
),
754 output_sections_blocker_(output_sections_blocker
),
755 final_blocker_(final_blocker
)
758 // The standard Task methods.
771 { return "Write_sections_task"; }
774 class Write_sections_locker
;
776 const Layout
* layout_
;
778 Task_token
* output_sections_blocker_
;
779 Task_token
* final_blocker_
;
782 // This task handles writing out data which is not part of a section
785 class Write_data_task
: public Task
788 Write_data_task(const Layout
* layout
, const Symbol_table
* symtab
,
789 Output_file
* of
, Task_token
* final_blocker
)
790 : layout_(layout
), symtab_(symtab
), of_(of
), final_blocker_(final_blocker
)
793 // The standard Task methods.
806 { return "Write_data_task"; }
809 const Layout
* layout_
;
810 const Symbol_table
* symtab_
;
812 Task_token
* final_blocker_
;
815 // This task handles writing out the global symbols.
817 class Write_symbols_task
: public Task
820 Write_symbols_task(const Layout
* layout
, const Symbol_table
* symtab
,
821 const Input_objects
* input_objects
,
822 const Stringpool
* sympool
, const Stringpool
* dynpool
,
823 Output_file
* of
, Task_token
* final_blocker
)
824 : layout_(layout
), symtab_(symtab
), input_objects_(input_objects
),
825 sympool_(sympool
), dynpool_(dynpool
), of_(of
),
826 final_blocker_(final_blocker
)
829 // The standard Task methods.
842 { return "Write_symbols_task"; }
845 const Layout
* layout_
;
846 const Symbol_table
* symtab_
;
847 const Input_objects
* input_objects_
;
848 const Stringpool
* sympool_
;
849 const Stringpool
* dynpool_
;
851 Task_token
* final_blocker_
;
854 // This task handles writing out data in output sections which can't
855 // be written out until all the input sections have been handled.
856 // This is for sections whose contents is based on the contents of
857 // other output sections.
859 class Write_after_input_sections_task
: public Task
862 Write_after_input_sections_task(Layout
* layout
, Output_file
* of
,
863 Task_token
* input_sections_blocker
,
864 Task_token
* final_blocker
)
865 : layout_(layout
), of_(of
),
866 input_sections_blocker_(input_sections_blocker
),
867 final_blocker_(final_blocker
)
870 // The standard Task methods.
883 { return "Write_after_input_sections_task"; }
888 Task_token
* input_sections_blocker_
;
889 Task_token
* final_blocker_
;
892 // This task function handles closing the file.
894 class Close_task_runner
: public Task_function_runner
897 Close_task_runner(const General_options
* options
, const Layout
* layout
,
899 : options_(options
), layout_(layout
), of_(of
)
902 // Run the operation.
904 run(Workqueue
*, const Task
*);
907 const General_options
* options_
;
908 const Layout
* layout_
;
912 // A small helper function to align an address.
915 align_address(uint64_t address
, uint64_t addralign
)
918 address
= (address
+ addralign
- 1) &~ (addralign
- 1);
922 } // End namespace gold.
924 #endif // !defined(GOLD_LAYOUT_H)