1 // dwp.cc -- DWARF packaging utility
3 // Copyright (C) 2012-2014 Free Software Foundation, Inc.
4 // Written by Cary Coutant <ccoutant@google.com>.
6 // This file is part of dwp, the DWARF packaging utility.
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.
36 #include "libiberty.h"
37 #include "../bfd/bfdver.h"
40 #include "elfcpp_file.h"
42 #include "dirsearch.h"
45 #include "compressed_output.h"
46 #include "stringpool.h"
47 #include "dwarf_reader.h"
50 usage(FILE* fd
, int) ATTRIBUTE_NORETURN
;
53 print_version() ATTRIBUTE_NORETURN
;
57 class Dwp_output_file
;
59 template <int size
, bool big_endian
>
60 class Sized_relobj_dwo
;
62 // List of .dwo files to process.
65 Dwo_file_entry(uint64_t id
, std::string name
)
66 : dwo_id(id
), dwo_name(name
)
71 typedef std::vector
<Dwo_file_entry
> File_list
;
73 // Type to hold the offset and length of an input section
74 // within an output section.
78 section_offset_type offset
;
79 section_size_type size
;
85 Section_bounds(section_offset_type o
, section_size_type s
)
90 // A set of sections for a compilation unit or type unit.
95 Section_bounds sections
[elfcpp::DW_SECT_MAX
+ 1];
98 : signature(0), sections()
103 // This class may represent a .dwo file, a .dwp file
104 // produced by an earlier run, or an executable file whose
105 // debug section identifies a set of .dwo files to read.
110 Dwo_file(const char* name
)
111 : name_(name
), obj_(NULL
), input_file_(NULL
), is_compressed_(),
112 sect_offsets_(), str_offset_map_()
117 // Read the input executable file and extract the list of .dwo files
118 // that it references.
120 read_executable(File_list
* files
);
122 // Read the input file and send its contents to OUTPUT_FILE.
124 read(Dwp_output_file
* output_file
);
126 // Verify a .dwp file given a list of .dwo files referenced by the
127 // corresponding executable file. Returns true if no problems
130 verify(const File_list
& files
);
133 // Types for mapping input string offsets to output string offsets.
134 typedef std::pair
<section_offset_type
, section_offset_type
>
135 Str_offset_map_entry
;
136 typedef std::vector
<Str_offset_map_entry
> Str_offset_map
;
138 // A less-than comparison routine for Str_offset_map.
139 struct Offset_compare
142 operator()(const Str_offset_map_entry
& i1
,
143 const Str_offset_map_entry
& i2
) const
144 { return i1
.first
< i2
.first
; }
147 // Create a Sized_relobj_dwo of the given size and endianness,
148 // and record the target info. P is a pointer to the ELF header
151 make_object(Dwp_output_file
* output_file
);
153 template <int size
, bool big_endian
>
155 sized_make_object(const unsigned char* p
, Input_file
* input_file
,
156 Dwp_output_file
* output_file
);
158 // Return the number of sections in the input object file.
161 { return this->obj_
->shnum(); }
163 // Return section type.
165 section_type(unsigned int shndx
)
166 { return this->obj_
->section_type(shndx
); }
168 // Get the name of a section.
170 section_name(unsigned int shndx
)
171 { return this->obj_
->section_name(shndx
); }
173 // Return a view of the contents of a section, decompressed if necessary.
174 // Set *PLEN to the size. Set *IS_NEW to true if the contents need to be
175 // deleted by the caller.
177 section_contents(unsigned int shndx
, section_size_type
* plen
, bool* is_new
)
178 { return this->obj_
->decompressed_section_contents(shndx
, plen
, is_new
); }
180 // Read the .debug_cu_index or .debug_tu_index section of a .dwp file,
181 // and process the CU or TU sets.
183 read_unit_index(unsigned int, unsigned int *, Dwp_output_file
*,
186 template <bool big_endian
>
188 sized_read_unit_index(unsigned int, unsigned int *, Dwp_output_file
*,
191 // Verify the .debug_cu_index section of a .dwp file, comparing it
192 // against the list of .dwo files referenced by the corresponding
195 verify_dwo_list(unsigned int, const File_list
& files
);
197 template <bool big_endian
>
199 sized_verify_dwo_list(unsigned int, const File_list
& files
);
201 // Merge the input string table section into the output file.
203 add_strings(Dwp_output_file
*, unsigned int);
205 // Copy a section from the input file to the output file.
207 copy_section(Dwp_output_file
* output_file
, unsigned int shndx
,
208 elfcpp::DW_SECT section_id
);
210 // Remap the string offsets in the .debug_str_offsets.dwo section.
212 remap_str_offsets(const unsigned char* contents
, section_size_type len
);
214 template <bool big_endian
>
216 sized_remap_str_offsets(const unsigned char* contents
, section_size_type len
);
218 // Remap a single string offsets from an offset in the input string table
219 // to an offset in the output string table.
221 remap_str_offset(section_offset_type val
);
223 // Add a set of .debug_info.dwo or .debug_types.dwo and related sections
226 add_unit_set(Dwp_output_file
* output_file
, unsigned int *debug_shndx
,
227 bool is_debug_types
);
231 // The ELF file, represented as a gold Relobj instance.
233 // The Input_file object.
234 Input_file
* input_file_
;
235 // Flags indicating which sections are compressed.
236 std::vector
<bool> is_compressed_
;
237 // Map input section index onto output section offset and size.
238 std::vector
<Section_bounds
> sect_offsets_
;
239 // Map input string offsets to output string offsets.
240 Str_offset_map str_offset_map_
;
243 // An ELF input file.
244 // We derive from Sized_relobj so that we can use interfaces
245 // in libgold to access the file.
247 template <int size
, bool big_endian
>
248 class Sized_relobj_dwo
: public Sized_relobj
<size
, big_endian
>
251 typedef typename
elfcpp::Elf_types
<size
>::Elf_Addr Address
;
252 typedef typename Sized_relobj
<size
, big_endian
>::Symbols Symbols
;
254 Sized_relobj_dwo(const char* name
, Input_file
* input_file
,
255 const elfcpp::Ehdr
<size
, big_endian
>& ehdr
)
256 : Sized_relobj
<size
, big_endian
>(name
, input_file
),
257 elf_file_(this, ehdr
)
263 // Setup the section information.
268 // Return section type.
270 do_section_type(unsigned int shndx
)
271 { return this->elf_file_
.section_type(shndx
); }
273 // Get the name of a section.
275 do_section_name(unsigned int shndx
) const
276 { return this->elf_file_
.section_name(shndx
); }
278 // Get the size of a section.
280 do_section_size(unsigned int shndx
)
281 { return this->elf_file_
.section_size(shndx
); }
283 // Return a view of the contents of a section.
285 do_section_contents(unsigned int, section_size_type
*, bool);
287 // Return a view of the uncompressed contents of a section. Set *PLEN
288 // to the size. Set *IS_NEW to true if the contents need to be deleted
291 do_decompressed_section_contents(unsigned int shndx
,
292 section_size_type
* plen
,
295 // The following virtual functions are abstract in the base classes,
296 // but are not used here.
300 do_read_symbols(Read_symbols_data
*)
301 { gold_unreachable(); }
303 // Lay out the input sections.
305 do_layout(Symbol_table
*, Layout
*, Read_symbols_data
*)
306 { gold_unreachable(); }
308 // Layout sections whose layout was deferred while waiting for
309 // input files from a plugin.
311 do_layout_deferred_sections(Layout
*)
312 { gold_unreachable(); }
314 // Add the symbols to the symbol table.
316 do_add_symbols(Symbol_table
*, Read_symbols_data
*, Layout
*)
317 { gold_unreachable(); }
319 Archive::Should_include
320 do_should_include_member(Symbol_table
*, Layout
*, Read_symbols_data
*,
322 { gold_unreachable(); }
324 // Iterate over global symbols, calling a visitor class V for each.
326 do_for_all_global_symbols(Read_symbols_data
*,
327 Library_base::Symbol_visitor_base
*)
328 { gold_unreachable(); }
330 // Return section flags.
332 do_section_flags(unsigned int)
333 { gold_unreachable(); }
335 // Return section entsize.
337 do_section_entsize(unsigned int)
338 { gold_unreachable(); }
340 // Return section address.
342 do_section_address(unsigned int)
343 { gold_unreachable(); }
345 // Return the section link field.
347 do_section_link(unsigned int)
348 { gold_unreachable(); }
350 // Return the section link field.
352 do_section_info(unsigned int)
353 { gold_unreachable(); }
355 // Return the section alignment.
357 do_section_addralign(unsigned int)
358 { gold_unreachable(); }
360 // Return the Xindex structure to use.
362 do_initialize_xindex()
363 { gold_unreachable(); }
365 // Get symbol counts.
367 do_get_global_symbol_counts(const Symbol_table
*, size_t*, size_t*) const
368 { gold_unreachable(); }
370 // Get global symbols.
372 do_get_global_symbols() const
375 // Return the value of a local symbol.
377 do_local_symbol_value(unsigned int, uint64_t) const
378 { gold_unreachable(); }
381 do_local_plt_offset(unsigned int) const
382 { gold_unreachable(); }
384 // Return whether local symbol SYMNDX is a TLS symbol.
386 do_local_is_tls(unsigned int) const
387 { gold_unreachable(); }
389 // Return the number of local symbols.
391 do_local_symbol_count() const
392 { gold_unreachable(); }
394 // Return the number of local symbols in the output symbol table.
396 do_output_local_symbol_count() const
397 { gold_unreachable(); }
399 // Return the file offset for local symbols in the output symbol table.
401 do_local_symbol_offset() const
402 { gold_unreachable(); }
406 do_read_relocs(Read_relocs_data
*)
407 { gold_unreachable(); }
409 // Process the relocs to find list of referenced sections. Used only
410 // during garbage collection.
412 do_gc_process_relocs(Symbol_table
*, Layout
*, Read_relocs_data
*)
413 { gold_unreachable(); }
415 // Scan the relocs and adjust the symbol table.
417 do_scan_relocs(Symbol_table
*, Layout
*, Read_relocs_data
*)
418 { gold_unreachable(); }
420 // Count the local symbols.
422 do_count_local_symbols(Stringpool_template
<char>*,
423 Stringpool_template
<char>*)
424 { gold_unreachable(); }
426 // Finalize the local symbols.
428 do_finalize_local_symbols(unsigned int, off_t
, Symbol_table
*)
429 { gold_unreachable(); }
431 // Set the offset where local dynamic symbol information will be stored.
433 do_set_local_dynsym_indexes(unsigned int)
434 { gold_unreachable(); }
436 // Set the offset where local dynamic symbol information will be stored.
438 do_set_local_dynsym_offset(off_t
)
439 { gold_unreachable(); }
441 // Relocate the input sections and write out the local symbols.
443 do_relocate(const Symbol_table
*, const Layout
*, Output_file
*)
444 { gold_unreachable(); }
447 // General access to the ELF file.
448 elfcpp::Elf_file
<size
, big_endian
, Object
> elf_file_
;
452 // This class is responsible for collecting the debug index information
453 // and writing the .dwp file in ELF format.
455 class Dwp_output_file
458 Dwp_output_file(const char* name
)
459 : name_(name
), machine_(0), size_(0), big_endian_(false), osabi_(0),
460 abiversion_(0), fd_(NULL
), next_file_offset_(0), shnum_(1), sections_(),
461 section_id_map_(), shoff_(0), shstrndx_(0), have_strings_(false),
462 stringpool_(), shstrtab_(), cu_index_(), tu_index_(), last_type_sig_(0),
465 this->section_id_map_
.resize(elfcpp::DW_SECT_MAX
+ 1);
466 this->stringpool_
.set_no_zero_null();
469 // Record the target info from an input file.
471 record_target_info(const char* name
, int machine
, int size
, bool big_endian
,
472 int osabi
, int abiversion
);
474 // Add a string to the debug strings section.
476 add_string(const char* str
, size_t len
);
478 // Add a section to the output file, and return the new section offset.
480 add_contribution(elfcpp::DW_SECT section_id
, const unsigned char* contents
,
481 section_size_type len
, int align
);
483 // Add a set of .debug_info and related sections to the output file.
485 add_cu_set(Unit_set
* cu_set
);
487 // Lookup a type signature and return TRUE if we have already seen it.
489 lookup_tu(uint64_t type_sig
);
491 // Add a set of .debug_types and related sections to the output file.
493 add_tu_set(Unit_set
* tu_set
);
495 // Finalize the file, write the string tables and index sections,
496 // and close the file.
501 // Contributions to output sections.
504 section_offset_type output_offset
;
505 section_size_type size
;
506 const unsigned char* contents
;
509 // Sections in the output file.
514 section_size_type size
;
516 std::vector
<Contribution
> contributions
;
518 Section(const char* n
, int a
)
519 : name(n
), offset(0), size(0), align(a
), contributions()
523 // The index sections defined by the DWARF Package File Format spec.
527 // Vector for the section table.
528 typedef std::vector
<const Unit_set
*> Section_table
;
531 : capacity_(0), used_(0), hash_table_(NULL
), section_table_(),
538 // Find a slot in the hash table for SIGNATURE. Return TRUE
539 // if the entry already exists.
541 find_or_add(uint64_t signature
, unsigned int* slotp
);
543 // Enter a CU or TU set at the given SLOT in the hash table.
545 enter_set(unsigned int slot
, const Unit_set
* set
);
547 // Return the contents of the given SLOT in the hash table of signatures.
549 hash_table(unsigned int slot
) const
550 { return this->hash_table_
[slot
]; }
552 // Return the contents of the given SLOT in the parallel table of
553 // shndx pool indexes.
555 index_table(unsigned int slot
) const
556 { return this->index_table_
[slot
]; }
558 // Return the total number of slots in the hash table.
560 hash_table_total_slots() const
561 { return this->capacity_
; }
563 // Return the number of used slots in the hash table.
565 hash_table_used_slots() const
566 { return this->used_
; }
568 // Return an iterator into the shndx pool.
569 Section_table::const_iterator
570 section_table() const
571 { return this->section_table_
.begin(); }
573 Section_table::const_iterator
574 section_table_end() const
575 { return this->section_table_
.end(); }
577 // Return the number of rows in the section table.
579 section_table_rows() const
580 { return this->section_table_
.size(); }
582 // Return the mask indicating which columns will be used
583 // in the section table.
585 section_table_cols() const
586 { return this->section_mask_
; }
589 // Initialize the hash table.
593 // Grow the hash table when we reach 2/3 capacity.
597 // The number of slots in the table, a power of 2 such that
598 // capacity > 3 * size / 2.
599 unsigned int capacity_
;
600 // The current number of used slots in the hash table.
602 // The storage for the hash table of signatures.
603 uint64_t* hash_table_
;
604 // The storage for the parallel table of shndx pool indexes.
605 uint32_t* index_table_
;
606 // The table of section offsets and sizes.
607 Section_table section_table_
;
608 // Bit mask to indicate which debug sections are present in the file.
610 }; // End class Dwp_output_file::Dwp_index.
612 // Add a new output section and return the section index.
614 add_output_section(const char* section_name
, int align
);
616 // Write a new section to the output file.
618 write_new_section(const char* section_name
, const unsigned char* contents
,
619 section_size_type len
, int align
);
621 // Write the ELF header.
625 template<unsigned int size
, bool big_endian
>
629 // Write a section header.
631 write_shdr(const char* name
, unsigned int type
, unsigned int flags
,
632 uint64_t addr
, off_t offset
, section_size_type sect_size
,
633 unsigned int link
, unsigned int info
,
634 unsigned int align
, unsigned int ent_size
);
636 template<unsigned int size
, bool big_endian
>
638 sized_write_shdr(const char* name
, unsigned int type
, unsigned int flags
,
639 uint64_t addr
, off_t offset
, section_size_type sect_size
,
640 unsigned int link
, unsigned int info
,
641 unsigned int align
, unsigned int ent_size
);
643 // Write the contributions to an output section.
645 write_contributions(const Section
& sect
);
647 // Write a CU or TU index section.
648 template<bool big_endian
>
650 write_index(const char* sect_name
, const Dwp_index
& index
);
652 // The output filename.
654 // ELF header parameters.
660 // The output file descriptor.
662 // Next available file offset.
663 off_t next_file_offset_
;
664 // The number of sections.
666 // Section table. The first entry is shndx 1.
667 std::vector
<Section
> sections_
;
668 // Section id map. This maps a DW_SECT enum to an shndx.
669 std::vector
<unsigned int> section_id_map_
;
670 // File offset of the section header table.
672 // Section index of the section string table.
673 unsigned int shstrndx_
;
674 // TRUE if we have added any strings to the string pool.
676 // String pool for the output .debug_str.dwo section.
677 Stringpool stringpool_
;
678 // String pool for the .shstrtab section.
679 Stringpool shstrtab_
;
680 // The compilation unit index.
682 // The type unit index.
684 // Cache of the last type signature looked up.
685 uint64_t last_type_sig_
;
686 // Cache of the slot index for the last type signature.
687 unsigned int last_tu_slot_
;
690 // A specialization of Dwarf_info_reader, for reading dwo_names from
693 class Dwo_name_info_reader
: public Dwarf_info_reader
696 Dwo_name_info_reader(Relobj
* object
, unsigned int shndx
)
697 : Dwarf_info_reader(false, object
, NULL
, 0, shndx
, 0, 0),
701 ~Dwo_name_info_reader()
704 // Get the dwo_names from the DWARF compilation unit DIEs.
706 get_dwo_names(File_list
* files
)
708 this->files_
= files
;
713 // Visit a compilation unit.
715 visit_compilation_unit(off_t cu_offset
, off_t cu_length
, Dwarf_die
*);
718 // The list of files to populate.
722 // A specialization of Dwarf_info_reader, for reading DWARF CUs and TUs
723 // and adding them to the output file.
725 class Unit_reader
: public Dwarf_info_reader
728 Unit_reader(bool is_type_unit
, Relobj
* object
, unsigned int shndx
)
729 : Dwarf_info_reader(is_type_unit
, object
, NULL
, 0, shndx
, 0, 0),
730 output_file_(NULL
), sections_(NULL
)
736 // Read the CUs or TUs and add them to the output file.
738 add_units(Dwp_output_file
*, unsigned int debug_abbrev
, Section_bounds
*);
741 // Visit a compilation unit.
743 visit_compilation_unit(off_t cu_offset
, off_t cu_length
, Dwarf_die
*);
745 // Visit a type unit.
747 visit_type_unit(off_t tu_offset
, off_t tu_length
, off_t type_offset
,
748 uint64_t signature
, Dwarf_die
*);
751 Dwp_output_file
* output_file_
;
752 Section_bounds
* sections_
;
755 // Return the name of a DWARF .dwo section.
758 get_dwarf_section_name(elfcpp::DW_SECT section_id
)
760 static const char* dwarf_section_names
[] = {
762 ".debug_info.dwo", // DW_SECT_INFO = 1
763 ".debug_types.dwo", // DW_SECT_TYPES = 2
764 ".debug_abbrev.dwo", // DW_SECT_ABBREV = 3
765 ".debug_line.dwo", // DW_SECT_LINE = 4
766 ".debug_loc.dwo", // DW_SECT_LOC = 5
767 ".debug_str_offsets.dwo", // DW_SECT_STR_OFFSETS = 6
768 ".debug_macinfo.dwo", // DW_SECT_MACINFO = 7
769 ".debug_macro.dwo", // DW_SECT_MACRO = 8
772 gold_assert(section_id
> 0 && section_id
<= elfcpp::DW_SECT_MAX
);
773 return dwarf_section_names
[section_id
];
776 // Class Sized_relobj_dwo.
778 // Setup the section information.
780 template <int size
, bool big_endian
>
782 Sized_relobj_dwo
<size
, big_endian
>::setup()
784 const unsigned int shnum
= this->elf_file_
.shnum();
785 this->set_shnum(shnum
);
786 this->section_offsets().resize(shnum
);
789 // Return a view of the contents of a section.
791 template <int size
, bool big_endian
>
793 Sized_relobj_dwo
<size
, big_endian
>::do_section_contents(
795 section_size_type
* plen
,
798 Object::Location
loc(this->elf_file_
.section_contents(shndx
));
799 *plen
= convert_to_section_size_type(loc
.data_size
);
802 static const unsigned char empty
[1] = { '\0' };
805 return this->get_view(loc
.file_offset
, *plen
, true, cache
);
808 // Return a view of the uncompressed contents of a section. Set *PLEN
809 // to the size. Set *IS_NEW to true if the contents need to be deleted
812 template <int size
, bool big_endian
>
814 Sized_relobj_dwo
<size
, big_endian
>::do_decompressed_section_contents(
816 section_size_type
* plen
,
819 section_size_type buffer_size
;
820 const unsigned char* buffer
= this->do_section_contents(shndx
, &buffer_size
,
823 std::string sect_name
= this->do_section_name(shndx
);
824 if (!is_prefix_of(".zdebug_", sect_name
.c_str()))
831 section_size_type uncompressed_size
= get_uncompressed_size(buffer
,
833 unsigned char* uncompressed_data
= new unsigned char[uncompressed_size
];
834 if (!decompress_input_section(buffer
,
838 this->error(_("could not decompress section %s"),
839 this->section_name(shndx
).c_str());
840 *plen
= uncompressed_size
;
842 return uncompressed_data
;
847 Dwo_file::~Dwo_file()
849 if (this->obj_
!= NULL
)
851 if (this->input_file_
!= NULL
)
852 delete this->input_file_
;
855 // Read the input executable file and extract the list of .dwo files
856 // that it references.
859 Dwo_file::read_executable(File_list
* files
)
861 this->obj_
= this->make_object(NULL
);
863 unsigned int shnum
= this->shnum();
864 this->is_compressed_
.resize(shnum
);
865 this->sect_offsets_
.resize(shnum
);
867 unsigned int debug_info
= 0;
868 unsigned int debug_abbrev
= 0;
870 // Scan the section table and collect the debug sections we need.
871 // (Section index 0 is a dummy section; skip it.)
872 for (unsigned int i
= 1; i
< shnum
; i
++)
874 if (this->section_type(i
) != elfcpp::SHT_PROGBITS
)
876 std::string sect_name
= this->section_name(i
);
877 const char* suffix
= sect_name
.c_str();
878 if (is_prefix_of(".debug_", suffix
))
880 else if (is_prefix_of(".zdebug_", suffix
))
882 this->is_compressed_
[i
] = true;
887 if (strcmp(suffix
, "info") == 0)
889 else if (strcmp(suffix
, "abbrev") == 0)
895 Dwo_name_info_reader
dwarf_reader(this->obj_
, debug_info
);
896 dwarf_reader
.set_abbrev_shndx(debug_abbrev
);
897 dwarf_reader
.get_dwo_names(files
);
901 // Read the input file and send its contents to OUTPUT_FILE.
904 Dwo_file::read(Dwp_output_file
* output_file
)
906 this->obj_
= this->make_object(output_file
);
908 unsigned int shnum
= this->shnum();
909 this->is_compressed_
.resize(shnum
);
910 this->sect_offsets_
.resize(shnum
);
912 typedef std::vector
<unsigned int> Types_list
;
913 Types_list debug_types
;
914 unsigned int debug_shndx
[elfcpp::DW_SECT_MAX
+ 1];
915 for (unsigned int i
= 0; i
<= elfcpp::DW_SECT_MAX
; i
++)
917 unsigned int debug_str
= 0;
918 unsigned int debug_cu_index
= 0;
919 unsigned int debug_tu_index
= 0;
921 // Scan the section table and collect debug sections.
922 // (Section index 0 is a dummy section; skip it.)
923 for (unsigned int i
= 1; i
< shnum
; i
++)
925 if (this->section_type(i
) != elfcpp::SHT_PROGBITS
)
927 std::string sect_name
= this->section_name(i
);
928 const char* suffix
= sect_name
.c_str();
929 if (is_prefix_of(".debug_", suffix
))
931 else if (is_prefix_of(".zdebug_", suffix
))
933 this->is_compressed_
[i
] = true;
938 if (strcmp(suffix
, "info.dwo") == 0)
939 debug_shndx
[elfcpp::DW_SECT_INFO
] = i
;
940 else if (strcmp(suffix
, "types.dwo") == 0)
941 debug_types
.push_back(i
);
942 else if (strcmp(suffix
, "abbrev.dwo") == 0)
943 debug_shndx
[elfcpp::DW_SECT_ABBREV
] = i
;
944 else if (strcmp(suffix
, "line.dwo") == 0)
945 debug_shndx
[elfcpp::DW_SECT_LINE
] = i
;
946 else if (strcmp(suffix
, "loc.dwo") == 0)
947 debug_shndx
[elfcpp::DW_SECT_LOC
] = i
;
948 else if (strcmp(suffix
, "str.dwo") == 0)
950 else if (strcmp(suffix
, "str_offsets.dwo") == 0)
951 debug_shndx
[elfcpp::DW_SECT_STR_OFFSETS
] = i
;
952 else if (strcmp(suffix
, "macinfo.dwo") == 0)
953 debug_shndx
[elfcpp::DW_SECT_MACINFO
] = i
;
954 else if (strcmp(suffix
, "macro.dwo") == 0)
955 debug_shndx
[elfcpp::DW_SECT_MACRO
] = i
;
956 else if (strcmp(suffix
, "cu_index") == 0)
958 else if (strcmp(suffix
, "tu_index") == 0)
962 // Merge the input string table into the output string table.
963 this->add_strings(output_file
, debug_str
);
965 // If we found any .dwp index sections, read those and add the section
966 // sets to the output file.
967 if (debug_cu_index
> 0 || debug_tu_index
> 0)
969 if (debug_cu_index
> 0)
970 this->read_unit_index(debug_cu_index
, debug_shndx
, output_file
, false);
971 if (debug_tu_index
> 0)
973 if (debug_types
.size() > 1)
974 gold_fatal(_("%s: .dwp file must have no more than one "
975 ".debug_types.dwo section"), this->name_
);
976 if (debug_types
.size() == 1)
977 debug_shndx
[elfcpp::DW_SECT_TYPES
] = debug_types
[0];
979 debug_shndx
[elfcpp::DW_SECT_TYPES
] = 0;
980 this->read_unit_index(debug_tu_index
, debug_shndx
, output_file
, true);
985 // If we found no index sections, this is a .dwo file.
986 if (debug_shndx
[elfcpp::DW_SECT_INFO
] > 0)
987 this->add_unit_set(output_file
, debug_shndx
, false);
989 debug_shndx
[elfcpp::DW_SECT_INFO
] = 0;
990 for (Types_list::const_iterator tp
= debug_types
.begin();
991 tp
!= debug_types
.end();
994 debug_shndx
[elfcpp::DW_SECT_TYPES
] = *tp
;
995 this->add_unit_set(output_file
, debug_shndx
, true);
999 // Verify a .dwp file given a list of .dwo files referenced by the
1000 // corresponding executable file. Returns true if no problems
1004 Dwo_file::verify(const File_list
& files
)
1006 this->obj_
= this->make_object(NULL
);
1008 unsigned int shnum
= this->shnum();
1009 this->is_compressed_
.resize(shnum
);
1010 this->sect_offsets_
.resize(shnum
);
1012 unsigned int debug_cu_index
= 0;
1014 // Scan the section table and collect debug sections.
1015 // (Section index 0 is a dummy section; skip it.)
1016 for (unsigned int i
= 1; i
< shnum
; i
++)
1018 if (this->section_type(i
) != elfcpp::SHT_PROGBITS
)
1020 std::string sect_name
= this->section_name(i
);
1021 const char* suffix
= sect_name
.c_str();
1022 if (is_prefix_of(".debug_", suffix
))
1024 else if (is_prefix_of(".zdebug_", suffix
))
1026 this->is_compressed_
[i
] = true;
1031 if (strcmp(suffix
, "cu_index") == 0)
1035 if (debug_cu_index
== 0)
1036 gold_fatal(_("%s: no .debug_cu_index section found"), this->name_
);
1038 return this->verify_dwo_list(debug_cu_index
, files
);
1041 // Create a Sized_relobj_dwo of the given size and endianness,
1042 // and record the target info.
1045 Dwo_file::make_object(Dwp_output_file
* output_file
)
1047 // Open the input file.
1048 Input_file
* input_file
= new Input_file(this->name_
);
1049 this->input_file_
= input_file
;
1052 if (!input_file
->open(dirpath
, NULL
, &index
))
1053 gold_fatal(_("%s: can't open"), this->name_
);
1055 // Check that it's an ELF file.
1056 off_t filesize
= input_file
->file().filesize();
1057 int hdrsize
= elfcpp::Elf_recognizer::max_header_size
;
1058 if (filesize
< hdrsize
)
1060 const unsigned char* elf_header
=
1061 input_file
->file().get_view(0, 0, hdrsize
, true, false);
1062 if (!elfcpp::Elf_recognizer::is_elf_file(elf_header
, hdrsize
))
1063 gold_fatal(_("%s: not an ELF object file"), this->name_
);
1065 // Get the size, endianness, machine, etc. info from the header,
1066 // make an appropriately-sized Relobj, and pass the target info
1067 // to the output object.
1071 if (!elfcpp::Elf_recognizer::is_valid_header(elf_header
, hdrsize
, &size
,
1072 &big_endian
, &error
))
1073 gold_fatal(_("%s: %s"), this->name_
, error
.c_str());
1078 #ifdef HAVE_TARGET_32_BIG
1079 return this->sized_make_object
<32, true>(elf_header
, input_file
,
1085 #ifdef HAVE_TARGET_32_LITTLE
1086 return this->sized_make_object
<32, false>(elf_header
, input_file
,
1092 else if (size
== 64)
1095 #ifdef HAVE_TARGET_64_BIG
1096 return this->sized_make_object
<64, true>(elf_header
, input_file
,
1102 #ifdef HAVE_TARGET_64_LITTLE
1103 return this->sized_make_object
<64, false>(elf_header
, input_file
,
1113 // Function template to create a Sized_relobj_dwo and record the target info.
1114 // P is a pointer to the ELF header in memory.
1116 template <int size
, bool big_endian
>
1118 Dwo_file::sized_make_object(const unsigned char* p
, Input_file
* input_file
,
1119 Dwp_output_file
* output_file
)
1121 elfcpp::Ehdr
<size
, big_endian
> ehdr(p
);
1122 Sized_relobj_dwo
<size
, big_endian
>* obj
=
1123 new Sized_relobj_dwo
<size
, big_endian
>(this->name_
, input_file
, ehdr
);
1125 if (output_file
!= NULL
)
1126 output_file
->record_target_info(
1127 this->name_
, ehdr
.get_e_machine(), size
, big_endian
,
1128 ehdr
.get_e_ident()[elfcpp::EI_OSABI
],
1129 ehdr
.get_e_ident()[elfcpp::EI_ABIVERSION
]);
1133 // Read the .debug_cu_index or .debug_tu_index section of a .dwp file,
1134 // and process the CU or TU sets.
1137 Dwo_file::read_unit_index(unsigned int shndx
, unsigned int *debug_shndx
,
1138 Dwp_output_file
* output_file
, bool is_tu_index
)
1140 if (this->obj_
->is_big_endian())
1141 this->sized_read_unit_index
<true>(shndx
, debug_shndx
, output_file
,
1144 this->sized_read_unit_index
<false>(shndx
, debug_shndx
, output_file
,
1148 template <bool big_endian
>
1150 Dwo_file::sized_read_unit_index(unsigned int shndx
,
1151 unsigned int *debug_shndx
,
1152 Dwp_output_file
* output_file
,
1155 elfcpp::DW_SECT info_sect
= (is_tu_index
1156 ? elfcpp::DW_SECT_TYPES
1157 : elfcpp::DW_SECT_INFO
);
1158 unsigned int info_shndx
= debug_shndx
[info_sect
];
1160 gold_assert(shndx
> 0);
1162 section_size_type index_len
;
1164 const unsigned char* contents
=
1165 this->section_contents(shndx
, &index_len
, &index_is_new
);
1167 unsigned int version
=
1168 elfcpp::Swap_unaligned
<32, big_endian
>::readval(contents
);
1170 // We don't support version 1 anymore because it was experimental
1171 // and because in normal use, dwp is not expected to read .dwp files
1172 // produced by an earlier version of the tool.
1174 gold_fatal(_("%s: section %s has unsupported version number %d"),
1175 this->name_
, this->section_name(shndx
).c_str(), version
);
1177 unsigned int ncols
=
1178 elfcpp::Swap_unaligned
<32, big_endian
>::readval(contents
1179 + sizeof(uint32_t));
1180 unsigned int nused
=
1181 elfcpp::Swap_unaligned
<32, big_endian
>::readval(contents
1182 + 2 * sizeof(uint32_t));
1183 if (ncols
== 0 || nused
== 0)
1186 gold_assert(info_shndx
> 0);
1188 unsigned int nslots
=
1189 elfcpp::Swap_unaligned
<32, big_endian
>::readval(contents
1190 + 3 * sizeof(uint32_t));
1192 const unsigned char* phash
= contents
+ 4 * sizeof(uint32_t);
1193 const unsigned char* pindex
= phash
+ nslots
* sizeof(uint64_t);
1194 const unsigned char* pcolhdrs
= pindex
+ nslots
* sizeof(uint32_t);
1195 const unsigned char* poffsets
= pcolhdrs
+ ncols
* sizeof(uint32_t);
1196 const unsigned char* psizes
= poffsets
+ nused
* ncols
* sizeof(uint32_t);
1197 const unsigned char* pend
= psizes
+ nused
* ncols
* sizeof(uint32_t);
1199 if (pend
> contents
+ index_len
)
1200 gold_fatal(_("%s: section %s is corrupt"), this->name_
,
1201 this->section_name(shndx
).c_str());
1203 // Copy the related sections and track the section offsets and sizes.
1204 Section_bounds sections
[elfcpp::DW_SECT_MAX
+ 1];
1205 for (int i
= elfcpp::DW_SECT_ABBREV
; i
<= elfcpp::DW_SECT_MAX
; ++i
)
1207 if (debug_shndx
[i
] > 0)
1208 sections
[i
] = this->copy_section(output_file
, debug_shndx
[i
],
1209 static_cast<elfcpp::DW_SECT
>(i
));
1212 // Get the contents of the .debug_info.dwo or .debug_types.dwo section.
1213 section_size_type info_len
;
1215 const unsigned char* info_contents
=
1216 this->section_contents(info_shndx
, &info_len
, &info_is_new
);
1218 // Loop over the slots of the hash table.
1219 for (unsigned int i
= 0; i
< nslots
; ++i
)
1221 uint64_t signature
=
1222 elfcpp::Swap_unaligned
<64, big_endian
>::readval(phash
);
1223 unsigned int index
=
1224 elfcpp::Swap_unaligned
<32, big_endian
>::readval(pindex
);
1225 if (index
!= 0 && (!is_tu_index
|| !output_file
->lookup_tu(signature
)))
1227 Unit_set
* unit_set
= new Unit_set();
1228 unit_set
->signature
= signature
;
1229 const unsigned char* pch
= pcolhdrs
;
1230 const unsigned char* porow
=
1231 poffsets
+ (index
- 1) * ncols
* sizeof(uint32_t);
1232 const unsigned char* psrow
=
1233 psizes
+ (index
- 1) * ncols
* sizeof(uint32_t);
1235 // Adjust the offset of each contribution within the input section
1236 // by the offset of the input section within the output section.
1237 for (unsigned int j
= 0; j
<= ncols
; j
++)
1239 unsigned int dw_sect
=
1240 elfcpp::Swap_unaligned
<64, big_endian
>::readval(pch
);
1241 unsigned int offset
=
1242 elfcpp::Swap_unaligned
<64, big_endian
>::readval(porow
);
1244 elfcpp::Swap_unaligned
<64, big_endian
>::readval(psrow
);
1245 unit_set
->sections
[dw_sect
].offset
= (sections
[dw_sect
].offset
1247 unit_set
->sections
[dw_sect
].size
= size
;
1248 pch
+= sizeof(uint32_t);
1249 porow
+= sizeof(uint32_t);
1250 psrow
+= sizeof(uint32_t);
1253 const unsigned char* unit_start
=
1254 info_contents
+ unit_set
->sections
[info_sect
].offset
;
1255 section_size_type unit_length
= unit_set
->sections
[info_sect
].size
;
1257 // Dwp_output_file::add_contribution writes the .debug_info.dwo
1258 // section directly to the output file, so we only need to
1259 // duplicate contributions for .debug_types.dwo section.
1262 unsigned char *copy
= new unsigned char[unit_length
];
1263 memcpy(copy
, unit_start
, unit_length
);
1266 section_offset_type off
=
1267 output_file
->add_contribution(info_sect
, unit_start
,
1269 unit_set
->sections
[info_sect
].offset
= off
;
1271 output_file
->add_tu_set(unit_set
);
1273 output_file
->add_cu_set(unit_set
);
1275 phash
+= sizeof(uint64_t);
1276 pindex
+= sizeof(uint32_t);
1282 delete[] info_contents
;
1285 // Verify the .debug_cu_index section of a .dwp file, comparing it
1286 // against the list of .dwo files referenced by the corresponding
1290 Dwo_file::verify_dwo_list(unsigned int shndx
, const File_list
& files
)
1292 if (this->obj_
->is_big_endian())
1293 return this->sized_verify_dwo_list
<true>(shndx
, files
);
1295 return this->sized_verify_dwo_list
<false>(shndx
, files
);
1298 template <bool big_endian
>
1300 Dwo_file::sized_verify_dwo_list(unsigned int shndx
, const File_list
& files
)
1302 gold_assert(shndx
> 0);
1304 section_size_type index_len
;
1306 const unsigned char* contents
=
1307 this->section_contents(shndx
, &index_len
, &index_is_new
);
1309 unsigned int version
=
1310 elfcpp::Swap_unaligned
<32, big_endian
>::readval(contents
);
1312 // We don't support version 1 anymore because it was experimental
1313 // and because in normal use, dwp is not expected to read .dwp files
1314 // produced by an earlier version of the tool.
1316 gold_fatal(_("%s: section %s has unsupported version number %d"),
1317 this->name_
, this->section_name(shndx
).c_str(), version
);
1319 unsigned int ncols
=
1320 elfcpp::Swap_unaligned
<32, big_endian
>::readval(contents
1321 + sizeof(uint32_t));
1322 unsigned int nused
=
1323 elfcpp::Swap_unaligned
<32, big_endian
>::readval(contents
1324 + 2 * sizeof(uint32_t));
1325 if (ncols
== 0 || nused
== 0)
1328 unsigned int nslots
=
1329 elfcpp::Swap_unaligned
<32, big_endian
>::readval(contents
1330 + 3 * sizeof(uint32_t));
1332 const unsigned char* phash
= contents
+ 4 * sizeof(uint32_t);
1333 const unsigned char* pindex
= phash
+ nslots
* sizeof(uint64_t);
1334 const unsigned char* pcolhdrs
= pindex
+ nslots
* sizeof(uint32_t);
1335 const unsigned char* poffsets
= pcolhdrs
+ ncols
* sizeof(uint32_t);
1336 const unsigned char* psizes
= poffsets
+ nused
* ncols
* sizeof(uint32_t);
1337 const unsigned char* pend
= psizes
+ nused
* ncols
* sizeof(uint32_t);
1339 if (pend
> contents
+ index_len
)
1340 gold_fatal(_("%s: section %s is corrupt"), this->name_
,
1341 this->section_name(shndx
).c_str());
1344 for (File_list::const_iterator f
= files
.begin(); f
!= files
.end(); ++f
)
1346 uint64_t dwo_id
= f
->dwo_id
;
1347 unsigned int slot
= static_cast<unsigned int>(dwo_id
) & (nslots
- 1);
1348 const unsigned char* ph
= phash
+ slot
* sizeof(uint64_t);
1349 const unsigned char* pi
= pindex
+ slot
* sizeof(uint32_t);
1350 uint64_t probe
= elfcpp::Swap_unaligned
<64, big_endian
>::readval(ph
);
1351 uint32_t row_index
= elfcpp::Swap_unaligned
<32, big_endian
>::readval(pi
);
1352 if (row_index
!= 0 && probe
!= dwo_id
)
1354 unsigned int h2
= ((static_cast<unsigned int>(dwo_id
>> 32)
1355 & (nslots
- 1)) | 1);
1358 slot
= (slot
+ h2
) & (nslots
- 1);
1359 ph
= phash
+ slot
* sizeof(uint64_t);
1360 pi
= pindex
+ slot
* sizeof(uint32_t);
1361 probe
= elfcpp::Swap_unaligned
<64, big_endian
>::readval(ph
);
1362 row_index
= elfcpp::Swap_unaligned
<32, big_endian
>::readval(pi
);
1363 } while (row_index
!= 0 && probe
!= dwo_id
);
1367 printf(_("missing .dwo file: %016llx %s\n"),
1368 static_cast<long long>(dwo_id
), f
->dwo_name
.c_str());
1373 gold_info(_("Found %d missing .dwo files"), nmissing
);
1378 return nmissing
== 0;
1381 // Merge the input string table section into the output file.
1384 Dwo_file::add_strings(Dwp_output_file
* output_file
, unsigned int debug_str
)
1386 section_size_type len
;
1388 const unsigned char* pdata
= this->section_contents(debug_str
, &len
, &is_new
);
1389 const char* p
= reinterpret_cast<const char*>(pdata
);
1390 const char* pend
= p
+ len
;
1392 // Check that the last string is null terminated.
1393 if (pend
[-1] != '\0')
1394 gold_fatal(_("%s: last entry in string section '%s' "
1395 "is not null terminated"),
1397 this->section_name(debug_str
).c_str());
1399 // Count the number of strings in the section, and size the map.
1401 for (const char* pt
= p
; pt
< pend
; pt
+= strlen(pt
) + 1)
1403 this->str_offset_map_
.reserve(count
+ 1);
1405 // Add the strings to the output string table, and record the new offsets
1407 section_offset_type i
= 0;
1408 section_offset_type new_offset
;
1411 size_t len
= strlen(p
);
1412 new_offset
= output_file
->add_string(p
, len
);
1413 this->str_offset_map_
.push_back(std::make_pair(i
, new_offset
));
1418 this->str_offset_map_
.push_back(std::make_pair(i
, new_offset
));
1423 // Copy a section from the input file to the output file.
1424 // Return the offset and length of this input section's contribution
1425 // in the output section. If copying .debug_str_offsets.dwo, remap
1426 // the string offsets for the output string table.
1429 Dwo_file::copy_section(Dwp_output_file
* output_file
, unsigned int shndx
,
1430 elfcpp::DW_SECT section_id
)
1432 // Some sections may be referenced from more than one set.
1433 // Don't copy a section more than once.
1434 if (this->sect_offsets_
[shndx
].size
> 0)
1435 return this->sect_offsets_
[shndx
];
1437 // Get the section contents. Upon return, if IS_NEW is true, the memory
1438 // has been allocated via new; if false, the memory is part of the mapped
1439 // input file, and we will need to duplicate it so that it will persist
1440 // after we close the input file.
1441 section_size_type len
;
1443 const unsigned char* contents
= this->section_contents(shndx
, &len
, &is_new
);
1445 if (section_id
== elfcpp::DW_SECT_STR_OFFSETS
)
1447 const unsigned char* remapped
= this->remap_str_offsets(contents
, len
);
1450 contents
= remapped
;
1454 unsigned char* copy
= new unsigned char[len
];
1455 memcpy(copy
, contents
, len
);
1459 // Add the contents of the input section to the output section.
1460 // The output file takes ownership of the memory pointed to by CONTENTS.
1461 section_offset_type off
= output_file
->add_contribution(section_id
, contents
,
1464 // Store the output section bounds.
1465 Section_bounds
bounds(off
, len
);
1466 this->sect_offsets_
[shndx
] = bounds
;
1472 const unsigned char*
1473 Dwo_file::remap_str_offsets(const unsigned char* contents
,
1474 section_size_type len
)
1477 gold_fatal(_("%s: .debug_str_offsets.dwo section size not a multiple of 4"),
1480 if (this->obj_
->is_big_endian())
1481 return this->sized_remap_str_offsets
<true>(contents
, len
);
1483 return this->sized_remap_str_offsets
<false>(contents
, len
);
1486 template <bool big_endian
>
1487 const unsigned char*
1488 Dwo_file::sized_remap_str_offsets(const unsigned char* contents
,
1489 section_size_type len
)
1491 unsigned char* remapped
= new unsigned char[len
];
1492 const unsigned char* p
= contents
;
1493 unsigned char* q
= remapped
;
1496 unsigned int val
= elfcpp::Swap_unaligned
<32, big_endian
>::readval(p
);
1497 val
= this->remap_str_offset(val
);
1498 elfcpp::Swap_unaligned
<32, big_endian
>::writeval(q
, val
);
1507 Dwo_file::remap_str_offset(section_offset_type val
)
1509 Str_offset_map_entry entry
;
1512 Str_offset_map::const_iterator p
=
1513 std::lower_bound(this->str_offset_map_
.begin(),
1514 this->str_offset_map_
.end(),
1515 entry
, Offset_compare());
1517 if (p
== this->str_offset_map_
.end() || p
->first
> val
)
1519 if (p
== this->str_offset_map_
.begin())
1522 gold_assert(p
->first
<= val
);
1525 return p
->second
+ (val
- p
->first
);
1528 // Add a set of .debug_info.dwo or .debug_types.dwo and related sections
1532 Dwo_file::add_unit_set(Dwp_output_file
* output_file
, unsigned int *debug_shndx
,
1533 bool is_debug_types
)
1535 unsigned int shndx
= (is_debug_types
1536 ? debug_shndx
[elfcpp::DW_SECT_TYPES
]
1537 : debug_shndx
[elfcpp::DW_SECT_INFO
]);
1539 gold_assert(shndx
!= 0);
1541 if (debug_shndx
[elfcpp::DW_SECT_ABBREV
] == 0)
1542 gold_fatal(_("%s: no .debug_abbrev.dwo section found"), this->name_
);
1544 // Copy the related sections and track the section offsets and sizes.
1545 Section_bounds sections
[elfcpp::DW_SECT_MAX
+ 1];
1546 for (int i
= elfcpp::DW_SECT_ABBREV
; i
<= elfcpp::DW_SECT_MAX
; ++i
)
1548 if (debug_shndx
[i
] > 0)
1549 sections
[i
] = this->copy_section(output_file
, debug_shndx
[i
],
1550 static_cast<elfcpp::DW_SECT
>(i
));
1553 // Parse the .debug_info or .debug_types section and add each compilation
1554 // or type unit to the output file, along with the contributions to the
1555 // related sections.
1556 Unit_reader
reader(is_debug_types
, this->obj_
, shndx
);
1557 reader
.add_units(output_file
, debug_shndx
[elfcpp::DW_SECT_ABBREV
], sections
);
1560 // Class Dwp_output_file.
1562 // Record the target info from an input file. On first call, we
1563 // set the ELF header values for the output file. On subsequent
1564 // calls, we just verify that the values match.
1567 Dwp_output_file::record_target_info(const char*, int machine
,
1568 int size
, bool big_endian
,
1569 int osabi
, int abiversion
)
1571 // TODO: Check the values on subsequent calls.
1572 if (this->size_
> 0)
1575 this->machine_
= machine
;
1577 this->big_endian_
= big_endian
;
1578 this->osabi_
= osabi
;
1579 this->abiversion_
= abiversion
;
1582 this->next_file_offset_
= elfcpp::Elf_sizes
<32>::ehdr_size
;
1583 else if (size
== 64)
1584 this->next_file_offset_
= elfcpp::Elf_sizes
<64>::ehdr_size
;
1588 this->fd_
= ::fopen(this->name_
, "wb");
1589 if (this->fd_
== NULL
)
1590 gold_fatal(_("%s: %s"), this->name_
, strerror(errno
));
1592 // Write zeroes for the ELF header initially. We'll write
1593 // the actual header during finalize().
1594 static const char buf
[elfcpp::Elf_sizes
<64>::ehdr_size
] = { 0 };
1595 if (::fwrite(buf
, 1, this->next_file_offset_
, this->fd_
)
1596 < (size_t) this->next_file_offset_
)
1597 gold_fatal(_("%s: %s"), this->name_
, strerror(errno
));
1600 // Add a string to the debug strings section.
1603 Dwp_output_file::add_string(const char* str
, size_t len
)
1605 Stringpool::Key key
;
1606 this->stringpool_
.add_with_length(str
, len
, true, &key
);
1607 this->have_strings_
= true;
1608 // We aren't supposed to call get_offset() until after
1609 // calling set_string_offsets(), but the offsets will
1610 // not change unless optimizing the string pool.
1611 return this->stringpool_
.get_offset_from_key(key
);
1614 // Align the file offset to the given boundary.
1617 align_offset(off_t off
, int align
)
1619 return (off
+ align
- 1) & ~(align
- 1);
1622 // Add a new output section and return the section index.
1625 Dwp_output_file::add_output_section(const char* section_name
, int align
)
1627 Section
sect(section_name
, align
);
1628 this->sections_
.push_back(sect
);
1629 return this->shnum_
++;
1632 // Add a contribution to a section in the output file, and return the offset
1633 // of the contribution within the output section. The .debug_info.dwo section
1634 // is expected to be the largest one, so we will write the contents of this
1635 // section directly to the output file as we receive contributions, allowing
1636 // us to free that memory as soon as possible. We will save the remaining
1637 // contributions until we finalize the layout of the output file.
1640 Dwp_output_file::add_contribution(elfcpp::DW_SECT section_id
,
1641 const unsigned char* contents
,
1642 section_size_type len
,
1645 const char* section_name
= get_dwarf_section_name(section_id
);
1646 gold_assert(static_cast<size_t>(section_id
) < this->section_id_map_
.size());
1647 unsigned int shndx
= this->section_id_map_
[section_id
];
1649 // Create the section if necessary.
1652 section_name
= this->shstrtab_
.add_with_length(section_name
,
1653 strlen(section_name
),
1655 shndx
= this->add_output_section(section_name
, align
);
1656 this->section_id_map_
[section_id
] = shndx
;
1659 Section
& section
= this->sections_
[shndx
- 1];
1661 section_offset_type section_offset
;
1663 if (section_id
== elfcpp::DW_SECT_INFO
)
1665 // Write the .debug_info.dwo section directly.
1666 // We do not need to free the memory in this case.
1667 off_t file_offset
= this->next_file_offset_
;
1668 gold_assert(this->size_
> 0 && file_offset
> 0);
1670 file_offset
= align_offset(file_offset
, align
);
1671 if (section
.offset
== 0)
1672 section
.offset
= file_offset
;
1674 if (align
> section
.align
)
1676 // Since we've already committed to the layout for this
1677 // section, an unexpected large alignment boundary may
1678 // be impossible to honor.
1679 if (align_offset(section
.offset
, align
) != section
.offset
)
1680 gold_fatal(_("%s: alignment (%d) for section '%s' "
1681 "cannot be honored"),
1682 this->name_
, align
, section_name
);
1683 section
.align
= align
;
1686 section_offset
= file_offset
- section
.offset
;
1687 section
.size
= file_offset
+ len
- section
.offset
;
1689 ::fseek(this->fd_
, file_offset
, SEEK_SET
);
1690 if (::fwrite(contents
, 1, len
, this->fd_
) < len
)
1691 gold_fatal(_("%s: error writing section '%s'"), this->name_
,
1693 this->next_file_offset_
= file_offset
+ len
;
1697 // Collect the contributions and keep track of the total size.
1698 if (align
> section
.align
)
1699 section
.align
= align
;
1700 section_offset
= align_offset(section
.size
, align
);
1701 section
.size
= section_offset
+ len
;
1702 Contribution contrib
= { section_offset
, len
, contents
};
1703 section
.contributions
.push_back(contrib
);
1706 return section_offset
;
1709 // Add a set of .debug_info and related sections to the output file.
1712 Dwp_output_file::add_cu_set(Unit_set
* cu_set
)
1714 uint64_t dwo_id
= cu_set
->signature
;
1716 if (!this->cu_index_
.find_or_add(dwo_id
, &slot
))
1717 this->cu_index_
.enter_set(slot
, cu_set
);
1719 gold_warning(_("%s: duplicate entry for CU (dwo_id 0x%llx)"),
1720 this->name_
, (unsigned long long)dwo_id
);
1723 // Lookup a type signature and return TRUE if we have already seen it.
1725 Dwp_output_file::lookup_tu(uint64_t type_sig
)
1727 this->last_type_sig_
= type_sig
;
1728 return this->tu_index_
.find_or_add(type_sig
, &this->last_tu_slot_
);
1731 // Add a set of .debug_types and related sections to the output file.
1734 Dwp_output_file::add_tu_set(Unit_set
* tu_set
)
1736 uint64_t type_sig
= tu_set
->signature
;
1738 if (type_sig
== this->last_type_sig_
)
1739 slot
= this->last_tu_slot_
;
1741 this->tu_index_
.find_or_add(type_sig
, &slot
);
1742 this->tu_index_
.enter_set(slot
, tu_set
);
1745 // Find a slot in the hash table for SIGNATURE. Return TRUE
1746 // if the entry already exists.
1749 Dwp_output_file::Dwp_index::find_or_add(uint64_t signature
,
1750 unsigned int* slotp
)
1752 if (this->capacity_
== 0)
1755 static_cast<unsigned int>(signature
) & (this->capacity_
- 1);
1756 unsigned int secondary_hash
;
1757 uint64_t probe
= this->hash_table_
[slot
];
1758 uint32_t row_index
= this->index_table_
[slot
];
1759 if (row_index
!= 0 && probe
!= signature
)
1761 secondary_hash
= (static_cast<unsigned int>(signature
>> 32)
1762 & (this->capacity_
- 1)) | 1;
1765 slot
= (slot
+ secondary_hash
) & (this->capacity_
- 1);
1766 probe
= this->hash_table_
[slot
];
1767 row_index
= this->index_table_
[slot
];
1768 } while (row_index
!= 0 && probe
!= signature
);
1771 return (row_index
!= 0);
1774 // Enter a CU or TU set at the given SLOT in the hash table.
1777 Dwp_output_file::Dwp_index::enter_set(unsigned int slot
,
1778 const Unit_set
* set
)
1780 gold_assert(slot
< this->capacity_
);
1782 // Add a row to the offsets and sizes tables.
1783 this->section_table_
.push_back(set
);
1784 uint32_t row_index
= this->section_table_rows();
1786 // Mark the sections used in this set.
1787 for (unsigned int i
= 1; i
<= elfcpp::DW_SECT_MAX
; i
++)
1788 if (set
->sections
[i
].size
> 0)
1789 this->section_mask_
|= 1 << i
;
1791 // Enter the signature and pool index into the hash table.
1792 gold_assert(this->hash_table_
[slot
] == 0);
1793 this->hash_table_
[slot
] = set
->signature
;
1794 this->index_table_
[slot
] = row_index
;
1797 // Grow the hash table when we exceed 2/3 capacity.
1798 if (this->used_
* 3 > this->capacity_
* 2)
1802 // Initialize the hash table.
1805 Dwp_output_file::Dwp_index::initialize()
1807 this->capacity_
= 16;
1808 this->hash_table_
= new uint64_t[this->capacity_
];
1809 memset(this->hash_table_
, 0, this->capacity_
* sizeof(uint64_t));
1810 this->index_table_
= new uint32_t[this->capacity_
];
1811 memset(this->index_table_
, 0, this->capacity_
* sizeof(uint32_t));
1814 // Grow the hash table when we reach 2/3 capacity.
1817 Dwp_output_file::Dwp_index::grow()
1819 unsigned int old_capacity
= this->capacity_
;
1820 uint64_t* old_hash_table
= this->hash_table_
;
1821 uint32_t* old_index_table
= this->index_table_
;
1822 unsigned int old_used
= this->used_
;
1824 this->capacity_
= old_capacity
* 2;
1825 this->hash_table_
= new uint64_t[this->capacity_
];
1826 memset(this->hash_table_
, 0, this->capacity_
* sizeof(uint64_t));
1827 this->index_table_
= new uint32_t[this->capacity_
];
1828 memset(this->index_table_
, 0, this->capacity_
* sizeof(uint32_t));
1831 for (unsigned int i
= 0; i
< old_capacity
; ++i
)
1833 uint64_t signature
= old_hash_table
[i
];
1834 uint32_t row_index
= old_index_table
[i
];
1838 bool found
= this->find_or_add(signature
, &slot
);
1839 gold_assert(!found
);
1840 this->hash_table_
[slot
] = signature
;
1841 this->index_table_
[slot
] = row_index
;
1845 gold_assert(this->used_
== old_used
);
1847 delete[] old_hash_table
;
1848 delete[] old_index_table
;
1851 // Finalize the file, write the string tables and index sections,
1852 // and close the file.
1855 Dwp_output_file::finalize()
1859 // Write the accumulated output sections.
1860 for (unsigned int i
= 0; i
< this->sections_
.size(); i
++)
1862 Section
& sect
= this->sections_
[i
];
1863 // If the offset has already been assigned, the section has been written.
1864 if (sect
.offset
> 0 || sect
.size
== 0)
1866 off_t file_offset
= this->next_file_offset_
;
1867 file_offset
= align_offset(file_offset
, sect
.align
);
1868 sect
.offset
= file_offset
;
1869 this->write_contributions(sect
);
1870 this->next_file_offset_
= file_offset
+ sect
.size
;
1873 // Write the debug string table.
1874 if (this->have_strings_
)
1876 this->stringpool_
.set_string_offsets();
1877 section_size_type len
= this->stringpool_
.get_strtab_size();
1878 buf
= new unsigned char[len
];
1879 this->stringpool_
.write_to_buffer(buf
, len
);
1880 this->write_new_section(".debug_str.dwo", buf
, len
, 1);
1884 // Write the CU and TU indexes.
1885 if (this->big_endian_
)
1887 this->write_index
<true>(".debug_cu_index", this->cu_index_
);
1888 this->write_index
<true>(".debug_tu_index", this->tu_index_
);
1892 this->write_index
<false>(".debug_cu_index", this->cu_index_
);
1893 this->write_index
<false>(".debug_tu_index", this->tu_index_
);
1896 off_t file_offset
= this->next_file_offset_
;
1898 // Write the section string table.
1899 this->shstrndx_
= this->shnum_
++;
1900 const char* shstrtab_name
=
1901 this->shstrtab_
.add_with_length(".shstrtab", sizeof(".shstrtab") - 1,
1903 this->shstrtab_
.set_string_offsets();
1904 section_size_type shstrtab_len
= this->shstrtab_
.get_strtab_size();
1905 buf
= new unsigned char[shstrtab_len
];
1906 this->shstrtab_
.write_to_buffer(buf
, shstrtab_len
);
1907 off_t shstrtab_off
= file_offset
;
1908 ::fseek(this->fd_
, file_offset
, 0);
1909 if (::fwrite(buf
, 1, shstrtab_len
, this->fd_
) < shstrtab_len
)
1910 gold_fatal(_("%s: error writing section '.shstrtab'"), this->name_
);
1912 file_offset
+= shstrtab_len
;
1914 // Write the section header table. The first entry is a NULL entry.
1915 // This is followed by the debug sections, and finally we write the
1916 // .shstrtab section header.
1917 file_offset
= align_offset(file_offset
, this->size_
== 32 ? 4 : 8);
1918 this->shoff_
= file_offset
;
1919 ::fseek(this->fd_
, file_offset
, 0);
1920 section_size_type sh0_size
= 0;
1921 unsigned int sh0_link
= 0;
1922 if (this->shnum_
>= elfcpp::SHN_LORESERVE
)
1923 sh0_size
= this->shnum_
;
1924 if (this->shstrndx_
>= elfcpp::SHN_LORESERVE
)
1925 sh0_link
= this->shstrndx_
;
1926 this->write_shdr(NULL
, 0, 0, 0, 0, sh0_size
, sh0_link
, 0, 0, 0);
1927 for (unsigned int i
= 0; i
< this->sections_
.size(); ++i
)
1929 Section
& sect
= this->sections_
[i
];
1930 this->write_shdr(sect
.name
, elfcpp::SHT_PROGBITS
, 0, 0, sect
.offset
,
1931 sect
.size
, 0, 0, sect
.align
, 0);
1933 this->write_shdr(shstrtab_name
, elfcpp::SHT_STRTAB
, 0, 0,
1934 shstrtab_off
, shstrtab_len
, 0, 0, 1, 0);
1936 // Write the ELF header.
1940 if (this->fd_
!= NULL
)
1942 if (::fclose(this->fd_
) != 0)
1943 gold_fatal(_("%s: %s"), this->name_
, strerror(errno
));
1948 // Write the contributions to an output section.
1951 Dwp_output_file::write_contributions(const Section
& sect
)
1953 for (unsigned int i
= 0; i
< sect
.contributions
.size(); ++i
)
1955 const Contribution
& c
= sect
.contributions
[i
];
1956 ::fseek(this->fd_
, sect
.offset
+ c
.output_offset
, SEEK_SET
);
1957 if (::fwrite(c
.contents
, 1, c
.size
, this->fd_
) < c
.size
)
1958 gold_fatal(_("%s: error writing section '%s'"), this->name_
, sect
.name
);
1959 delete[] c
.contents
;
1963 // Write a new section to the output file.
1966 Dwp_output_file::write_new_section(const char* section_name
,
1967 const unsigned char* contents
,
1968 section_size_type len
, int align
)
1970 section_name
= this->shstrtab_
.add_with_length(section_name
,
1971 strlen(section_name
),
1973 unsigned int shndx
= this->add_output_section(section_name
, align
);
1974 Section
& section
= this->sections_
[shndx
- 1];
1975 off_t file_offset
= this->next_file_offset_
;
1976 file_offset
= align_offset(file_offset
, align
);
1977 section
.offset
= file_offset
;
1979 ::fseek(this->fd_
, file_offset
, SEEK_SET
);
1980 if (::fwrite(contents
, 1, len
, this->fd_
) < len
)
1981 gold_fatal(_("%s: error writing section '%s'"), this->name_
, section_name
);
1982 this->next_file_offset_
= file_offset
+ len
;
1985 // Write a CU or TU index section.
1987 template<bool big_endian
>
1989 Dwp_output_file::write_index(const char* sect_name
, const Dwp_index
& index
)
1991 const unsigned int nslots
= index
.hash_table_total_slots();
1992 const unsigned int nused
= index
.hash_table_used_slots();
1993 const unsigned int nrows
= index
.section_table_rows();
1995 int column_mask
= index
.section_table_cols();
1996 unsigned int ncols
= 0;
1997 for (unsigned int c
= 1; c
<= elfcpp::DW_SECT_MAX
; ++c
)
1998 if (column_mask
& (1 << c
))
2000 const unsigned int ntable
= (nrows
* 2 + 1) * ncols
;
2002 const section_size_type index_size
= (4 * sizeof(uint32_t)
2003 + nslots
* sizeof(uint64_t)
2004 + nslots
* sizeof(uint32_t)
2005 + ntable
* sizeof(uint32_t));
2007 // Allocate a buffer for the section contents.
2008 unsigned char* buf
= new unsigned char[index_size
];
2009 unsigned char* p
= buf
;
2011 // Write the section header: version number, padding,
2012 // number of used slots and total number of slots.
2013 elfcpp::Swap_unaligned
<32, big_endian
>::writeval(p
, 2);
2014 p
+= sizeof(uint32_t);
2015 elfcpp::Swap_unaligned
<32, big_endian
>::writeval(p
, ncols
);
2016 p
+= sizeof(uint32_t);
2017 elfcpp::Swap_unaligned
<32, big_endian
>::writeval(p
, nused
);
2018 p
+= sizeof(uint32_t);
2019 elfcpp::Swap_unaligned
<32, big_endian
>::writeval(p
, nslots
);
2020 p
+= sizeof(uint32_t);
2022 // Write the hash table.
2023 for (unsigned int i
= 0; i
< nslots
; ++i
)
2025 elfcpp::Swap_unaligned
<64, big_endian
>::writeval(p
, index
.hash_table(i
));
2026 p
+= sizeof(uint64_t);
2029 // Write the parallel index table.
2030 for (unsigned int i
= 0; i
< nslots
; ++i
)
2032 elfcpp::Swap_unaligned
<32, big_endian
>::writeval(p
, index
.index_table(i
));
2033 p
+= sizeof(uint32_t);
2036 // Write the first row of the table of section offsets.
2037 for (unsigned int c
= 1; c
<= elfcpp::DW_SECT_MAX
; ++c
)
2039 if (column_mask
& (1 << c
))
2041 elfcpp::Swap_unaligned
<32, big_endian
>::writeval(p
, c
);
2042 p
+= sizeof(uint32_t);
2046 // Write the table of section offsets.
2047 Dwp_index::Section_table::const_iterator tbl
= index
.section_table();
2048 for (unsigned int r
= 0; r
< nrows
; ++r
)
2050 gold_assert(tbl
!= index
.section_table_end());
2051 const Section_bounds
* sects
= (*tbl
)->sections
;
2052 for (unsigned int c
= 1; c
<= elfcpp::DW_SECT_MAX
; ++c
)
2054 if (column_mask
& (1 << c
))
2056 section_offset_type offset
= sects
[c
].offset
;
2057 elfcpp::Swap_unaligned
<32, big_endian
>::writeval(p
, offset
);
2058 p
+= sizeof(uint32_t);
2061 gold_assert(sects
[c
].size
== 0);
2066 // Write the table of section sizes.
2067 tbl
= index
.section_table();
2068 for (unsigned int r
= 0; r
< nrows
; ++r
)
2070 gold_assert(tbl
!= index
.section_table_end());
2071 const Section_bounds
* sects
= (*tbl
)->sections
;
2072 for (unsigned int c
= 1; c
<= elfcpp::DW_SECT_MAX
; ++c
)
2074 if (column_mask
& (1 << c
))
2076 section_size_type size
= sects
[c
].size
;
2077 elfcpp::Swap_unaligned
<32, big_endian
>::writeval(p
, size
);
2078 p
+= sizeof(uint32_t);
2081 gold_assert(sects
[c
].size
== 0);
2086 gold_assert(p
== buf
+ index_size
);
2088 this->write_new_section(sect_name
, buf
, index_size
, sizeof(uint64_t));
2093 // Write the ELF header.
2096 Dwp_output_file::write_ehdr()
2098 if (this->size_
== 32)
2100 if (this->big_endian_
)
2101 return this->sized_write_ehdr
<32, true>();
2103 return this->sized_write_ehdr
<32, false>();
2105 else if (this->size_
== 64)
2107 if (this->big_endian_
)
2108 return this->sized_write_ehdr
<64, true>();
2110 return this->sized_write_ehdr
<64, false>();
2116 template<unsigned int size
, bool big_endian
>
2118 Dwp_output_file::sized_write_ehdr()
2120 const unsigned int ehdr_size
= elfcpp::Elf_sizes
<size
>::ehdr_size
;
2121 unsigned char buf
[ehdr_size
];
2122 elfcpp::Ehdr_write
<size
, big_endian
> ehdr(buf
);
2124 unsigned char e_ident
[elfcpp::EI_NIDENT
];
2125 memset(e_ident
, 0, elfcpp::EI_NIDENT
);
2126 e_ident
[elfcpp::EI_MAG0
] = elfcpp::ELFMAG0
;
2127 e_ident
[elfcpp::EI_MAG1
] = elfcpp::ELFMAG1
;
2128 e_ident
[elfcpp::EI_MAG2
] = elfcpp::ELFMAG2
;
2129 e_ident
[elfcpp::EI_MAG3
] = elfcpp::ELFMAG3
;
2131 e_ident
[elfcpp::EI_CLASS
] = elfcpp::ELFCLASS32
;
2132 else if (size
== 64)
2133 e_ident
[elfcpp::EI_CLASS
] = elfcpp::ELFCLASS64
;
2136 e_ident
[elfcpp::EI_DATA
] = (big_endian
2137 ? elfcpp::ELFDATA2MSB
2138 : elfcpp::ELFDATA2LSB
);
2139 e_ident
[elfcpp::EI_VERSION
] = elfcpp::EV_CURRENT
;
2140 ehdr
.put_e_ident(e_ident
);
2142 ehdr
.put_e_type(elfcpp::ET_REL
);
2143 ehdr
.put_e_machine(this->machine_
);
2144 ehdr
.put_e_version(elfcpp::EV_CURRENT
);
2145 ehdr
.put_e_entry(0);
2146 ehdr
.put_e_phoff(0);
2147 ehdr
.put_e_shoff(this->shoff_
);
2148 ehdr
.put_e_flags(0);
2149 ehdr
.put_e_ehsize(elfcpp::Elf_sizes
<size
>::ehdr_size
);
2150 ehdr
.put_e_phentsize(0);
2151 ehdr
.put_e_phnum(0);
2152 ehdr
.put_e_shentsize(elfcpp::Elf_sizes
<size
>::shdr_size
);
2153 ehdr
.put_e_shnum(this->shnum_
< elfcpp::SHN_LORESERVE
? this->shnum_
: 0);
2154 ehdr
.put_e_shstrndx(this->shstrndx_
< elfcpp::SHN_LORESERVE
2156 : static_cast<unsigned int>(elfcpp::SHN_XINDEX
));
2158 ::fseek(this->fd_
, 0, 0);
2159 if (::fwrite(buf
, 1, ehdr_size
, this->fd_
) < ehdr_size
)
2160 gold_fatal(_("%s: error writing ELF header"), this->name_
);
2163 // Write a section header.
2166 Dwp_output_file::write_shdr(const char* name
, unsigned int type
,
2167 unsigned int flags
, uint64_t addr
, off_t offset
,
2168 section_size_type sect_size
, unsigned int link
,
2169 unsigned int info
, unsigned int align
,
2170 unsigned int ent_size
)
2172 if (this->size_
== 32)
2174 if (this->big_endian_
)
2175 return this->sized_write_shdr
<32, true>(name
, type
, flags
, addr
,
2176 offset
, sect_size
, link
, info
,
2179 return this->sized_write_shdr
<32, false>(name
, type
, flags
, addr
,
2180 offset
, sect_size
, link
, info
,
2183 else if (this->size_
== 64)
2185 if (this->big_endian_
)
2186 return this->sized_write_shdr
<64, true>(name
, type
, flags
, addr
,
2187 offset
, sect_size
, link
, info
,
2190 return this->sized_write_shdr
<64, false>(name
, type
, flags
, addr
,
2191 offset
, sect_size
, link
, info
,
2198 template<unsigned int size
, bool big_endian
>
2200 Dwp_output_file::sized_write_shdr(const char* name
, unsigned int type
,
2201 unsigned int flags
, uint64_t addr
,
2202 off_t offset
, section_size_type sect_size
,
2203 unsigned int link
, unsigned int info
,
2204 unsigned int align
, unsigned int ent_size
)
2206 const unsigned int shdr_size
= elfcpp::Elf_sizes
<size
>::shdr_size
;
2207 unsigned char buf
[shdr_size
];
2208 elfcpp::Shdr_write
<size
, big_endian
> shdr(buf
);
2210 shdr
.put_sh_name(name
== NULL
? 0 : this->shstrtab_
.get_offset(name
));
2211 shdr
.put_sh_type(type
);
2212 shdr
.put_sh_flags(flags
);
2213 shdr
.put_sh_addr(addr
);
2214 shdr
.put_sh_offset(offset
);
2215 shdr
.put_sh_size(sect_size
);
2216 shdr
.put_sh_link(link
);
2217 shdr
.put_sh_info(info
);
2218 shdr
.put_sh_addralign(align
);
2219 shdr
.put_sh_entsize(ent_size
);
2220 if (::fwrite(buf
, 1, shdr_size
, this->fd_
) < shdr_size
)
2221 gold_fatal(_("%s: error writing section header table"), this->name_
);
2224 // Class Dwo_name_info_reader.
2226 // Visit a compilation unit.
2229 Dwo_name_info_reader::visit_compilation_unit(off_t
, off_t
, Dwarf_die
* die
)
2231 const char* dwo_name
= die
->string_attribute(elfcpp::DW_AT_GNU_dwo_name
);
2232 if (dwo_name
!= NULL
)
2234 uint64_t dwo_id
= die
->uint_attribute(elfcpp::DW_AT_GNU_dwo_id
);
2235 this->files_
->push_back(Dwo_file_entry(dwo_id
, dwo_name
));
2239 // Class Unit_reader.
2241 // Read the CUs or TUs and add them to the output file.
2244 Unit_reader::add_units(Dwp_output_file
* output_file
,
2245 unsigned int debug_abbrev
,
2246 Section_bounds
* sections
)
2248 this->output_file_
= output_file
;
2249 this->sections_
= sections
;
2250 this->set_abbrev_shndx(debug_abbrev
);
2254 // Visit a compilation unit.
2257 Unit_reader::visit_compilation_unit(off_t
, off_t cu_length
, Dwarf_die
* die
)
2262 Unit_set
* unit_set
= new Unit_set();
2263 unit_set
->signature
= die
->uint_attribute(elfcpp::DW_AT_GNU_dwo_id
);
2264 for (unsigned int i
= elfcpp::DW_SECT_ABBREV
; i
<= elfcpp::DW_SECT_MAX
; ++i
)
2265 unit_set
->sections
[i
] = this->sections_
[i
];
2267 // Dwp_output_file::add_contribution writes the .debug_info.dwo section
2268 // directly to the output file, so we do not need to duplicate the
2269 // section contents, and add_contribution does not need to free the memory.
2270 section_offset_type off
=
2271 this->output_file_
->add_contribution(elfcpp::DW_SECT_INFO
,
2272 this->buffer_at_offset(0),
2274 Section_bounds
bounds(off
, cu_length
);
2275 unit_set
->sections
[elfcpp::DW_SECT_INFO
] = bounds
;
2276 this->output_file_
->add_cu_set(unit_set
);
2279 // Visit a type unit.
2282 Unit_reader::visit_type_unit(off_t
, off_t tu_length
, off_t
,
2283 uint64_t signature
, Dwarf_die
*)
2287 if (this->output_file_
->lookup_tu(signature
))
2290 Unit_set
* unit_set
= new Unit_set();
2291 unit_set
->signature
= signature
;
2292 for (unsigned int i
= elfcpp::DW_SECT_ABBREV
; i
<= elfcpp::DW_SECT_MAX
; ++i
)
2293 unit_set
->sections
[i
] = this->sections_
[i
];
2295 unsigned char* contents
= new unsigned char[tu_length
];
2296 memcpy(contents
, this->buffer_at_offset(0), tu_length
);
2297 section_offset_type off
=
2298 this->output_file_
->add_contribution(elfcpp::DW_SECT_TYPES
, contents
,
2300 Section_bounds
bounds(off
, tu_length
);
2301 unit_set
->sections
[elfcpp::DW_SECT_TYPES
] = bounds
;
2302 this->output_file_
->add_tu_set(unit_set
);
2305 }; // End namespace gold
2307 using namespace gold
;
2312 VERIFY_ONLY
= 0x101,
2315 struct option dwp_options
[] =
2317 { "exec", required_argument
, NULL
, 'e' },
2318 { "help", no_argument
, NULL
, 'h' },
2319 { "output", required_argument
, NULL
, 'o' },
2320 { "verbose", no_argument
, NULL
, 'v' },
2321 { "verify-only", no_argument
, NULL
, VERIFY_ONLY
},
2322 { "version", no_argument
, NULL
, 'V' },
2323 { NULL
, 0, NULL
, 0 }
2326 // Print usage message and exit.
2329 usage(FILE* fd
, int exit_status
)
2331 fprintf(fd
, _("Usage: %s [options] [file...]\n"), program_name
);
2332 fprintf(fd
, _(" -h, --help Print this help message\n"));
2333 fprintf(fd
, _(" -e EXE, --exec EXE Get list of dwo files from EXE"
2334 " (defaults output to EXE.dwp)\n"));
2335 fprintf(fd
, _(" -o FILE, --output FILE Set output dwp file name\n"));
2336 fprintf(fd
, _(" -v, --verbose Verbose output\n"));
2337 fprintf(fd
, _(" --verify-only Verify output file against"
2339 fprintf(fd
, _(" -V, --version Print version number\n"));
2341 // REPORT_BUGS_TO is defined in bfd/bfdver.h.
2342 const char* report
= REPORT_BUGS_TO
;
2343 if (*report
!= '\0')
2344 fprintf(fd
, _("\nReport bugs to %s\n"), report
);
2348 // Report version information.
2353 // This output is intended to follow the GNU standards.
2354 printf("GNU dwp %s\n", BFD_VERSION_STRING
);
2355 printf(_("Copyright (C) 2014 Free Software Foundation, Inc.\n"));
2357 This program is free software; you may redistribute it under the terms of\n\
2358 the GNU General Public License version 3 or (at your option) any later version.\n\
2359 This program has absolutely no warranty.\n"));
2366 main(int argc
, char** argv
)
2368 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
2369 setlocale(LC_MESSAGES
, "");
2371 #if defined (HAVE_SETLOCALE)
2372 setlocale(LC_CTYPE
, "");
2374 bindtextdomain(PACKAGE
, LOCALEDIR
);
2375 textdomain(PACKAGE
);
2377 program_name
= argv
[0];
2379 // Initialize the global parameters, to let random code get to the
2381 Errors
errors(program_name
);
2382 set_parameters_errors(&errors
);
2384 // Initialize gold's global options. We don't use these in
2385 // this program, but they need to be initialized so that
2386 // functions we call from libgold work properly.
2387 General_options options
;
2388 set_parameters_options(&options
);
2390 // In libiberty; expands @filename to the args in "filename".
2391 expandargv(&argc
, &argv
);
2393 // Collect file names and options.
2395 std::string output_filename
;
2396 const char* exe_filename
= NULL
;
2397 bool verbose
= false;
2398 bool verify_only
= false;
2400 while ((c
= getopt_long(argc
, argv
, "e:ho:vV", dwp_options
, NULL
)) != -1)
2405 usage(stdout
, EXIT_SUCCESS
);
2407 exe_filename
= optarg
;
2410 output_filename
.assign(optarg
);
2422 usage(stderr
, EXIT_FAILURE
);
2426 if (output_filename
.empty())
2428 if (exe_filename
== NULL
)
2429 gold_fatal(_("no output file specified"));
2430 output_filename
.assign(exe_filename
);
2431 output_filename
.append(".dwp");
2434 // Get list of .dwo files from the executable.
2435 if (exe_filename
!= NULL
)
2437 Dwo_file
exe_file(exe_filename
);
2438 exe_file
.read_executable(&files
);
2441 // Add any additional files listed on command line.
2442 for (int i
= optind
; i
< argc
; ++i
)
2443 files
.push_back(Dwo_file_entry(0, argv
[i
]));
2445 if (exe_filename
== NULL
&& files
.empty())
2446 gold_fatal(_("no input files and no executable specified"));
2450 // Get list of DWO files in the DWP file and compare with
2451 // references found in the EXE file.
2452 Dwo_file
dwp_file(output_filename
.c_str());
2453 bool ok
= dwp_file
.verify(files
);
2454 return ok
? EXIT_SUCCESS
: EXIT_FAILURE
;
2457 // Process each file, adding its contents to the output file.
2458 Dwp_output_file
output_file(output_filename
.c_str());
2459 for (File_list::const_iterator f
= files
.begin(); f
!= files
.end(); ++f
)
2462 fprintf(stderr
, "%s\n", f
->dwo_name
.c_str());
2463 Dwo_file
dwo_file(f
->dwo_name
.c_str());
2464 dwo_file
.read(&output_file
);
2466 output_file
.finalize();
2468 return EXIT_SUCCESS
;