#include "elfcpp.h"
#include "elfcpp_file.h"
+#include "dwarf.h"
#include "dirsearch.h"
#include "fileread.h"
#include "object.h"
// List of .dwo files to process.
typedef std::vector<std::string> File_list;
+// Type to hold the offset and length of an input section
+// within an output section.
+
+struct Section_bounds
+{
+ section_offset_type offset;
+ section_size_type size;
+
+ Section_bounds()
+ : offset(0), size(0)
+ { }
+
+ Section_bounds(section_offset_type o, section_size_type s)
+ : offset(o), size(s)
+ { }
+};
+
+// A set of sections for a compilation unit or type unit.
+
+struct Unit_set
+{
+ uint64_t signature;
+ Section_bounds sections[elfcpp::DW_SECT_MAX + 1];
+
+ Unit_set()
+ : signature(0), sections()
+ { }
+};
+
// An input file.
// This class may represent a .dwo file, a .dwp file
// produced by an earlier run, or an executable file whose
public:
Dwo_file(const char* name)
: name_(name), obj_(NULL), input_file_(NULL), is_compressed_(),
- str_offset_map_()
+ sect_offsets_(), str_offset_map_()
{ }
~Dwo_file();
section_contents(unsigned int shndx, section_size_type* plen, bool* is_new)
{ return this->obj_->decompressed_section_contents(shndx, plen, is_new); }
- // Read the .debug_cu_index section of a .dwp file,
- // and process the CU sets.
+ // Read the .debug_cu_index or .debug_tu_index section of a .dwp file,
+ // and process the CU or TU sets.
void
- read_compunit_index(unsigned int, Dwp_output_file*);
+ read_unit_index(unsigned int, unsigned int *, Dwp_output_file*,
+ bool is_tu_index);
template <bool big_endian>
void
- sized_read_compunit_index(unsigned int, Dwp_output_file*);
-
- // Read the .debug_tu_index section of a .dwp file,
- // and process the TU sets.
- void
- read_typeunit_index(unsigned int, Dwp_output_file*);
-
- template <bool big_endian>
- void
- sized_read_typeunit_index(unsigned int, Dwp_output_file*);
+ sized_read_unit_index(unsigned int, unsigned int *, Dwp_output_file*,
+ bool is_tu_index);
// Merge the input string table section into the output file.
void
add_strings(Dwp_output_file*, unsigned int);
// Copy a section from the input file to the output file.
- unsigned int
+ Section_bounds
copy_section(Dwp_output_file* output_file, unsigned int shndx,
- const char* section_name, bool is_str_offsets);
+ elfcpp::DW_SECT section_id);
// Remap the string offsets in the .debug_str_offsets.dwo section.
const unsigned char*
unsigned int
remap_str_offset(section_offset_type val);
- // Add a set of .debug_info and related sections to OUTPUT_FILE.
- void
- add_cu_set(Dwp_output_file* output_file,
- uint64_t dwo_id,
- unsigned int debug_info,
- unsigned int debug_abbrev,
- unsigned int debug_line,
- unsigned int debug_loc,
- unsigned int debug_str_offsets,
- unsigned int debug_macinfo,
- unsigned int debug_macro);
-
- // Add a set of .debug_types and related sections to OUTPUT_FILE.
+ // Add a set of .debug_info.dwo or .debug_types.dwo and related sections
+ // to OUTPUT_FILE.
void
- add_tu_set(Dwp_output_file* output_file,
- uint64_t type_sig,
- unsigned int debug_types,
- unsigned int debug_abbrev,
- unsigned int debug_line,
- unsigned int debug_str_offsets);
+ add_unit_set(Dwp_output_file* output_file, unsigned int *debug_shndx,
+ bool is_debug_types);
// The filename.
const char* name_;
Input_file* input_file_;
// Flags indicating which sections are compressed.
std::vector<bool> is_compressed_;
- // Map input section index onto output section index.
- std::vector<unsigned int> shndx_map_;
+ // Map input section index onto output section offset and size.
+ std::vector<Section_bounds> sect_offsets_;
// Map input string offsets to output string offsets.
Str_offset_map str_offset_map_;
};
Dwp_output_file(const char* name)
: name_(name), machine_(0), size_(0), big_endian_(false), osabi_(0),
abiversion_(0), fd_(NULL), next_file_offset_(0), shnum_(1), sections_(),
- shoff_(0), shstrndx_(0), have_strings_(false), stringpool_(),
- shstrtab_(), cu_index_(), tu_index_(), last_type_sig_(0),
+ section_id_map_(), shoff_(0), shstrndx_(0), have_strings_(false),
+ stringpool_(), shstrtab_(), cu_index_(), tu_index_(), last_type_sig_(0),
last_tu_slot_(0)
{
+ this->section_id_map_.resize(elfcpp::DW_SECT_MAX + 1);
this->stringpool_.set_no_zero_null();
}
section_offset_type
add_string(const char* str, size_t len);
- // Add a section to the output file, and return the new section index.
- unsigned int
- add_section(const char* section_name, const unsigned char* contents,
- section_size_type len, int align);
+ // Add a section to the output file, and return the new section offset.
+ section_offset_type
+ add_contribution(elfcpp::DW_SECT section_id, const unsigned char* contents,
+ section_size_type len, int align);
// Add a set of .debug_info and related sections to the output file.
void
- add_cu_set(uint64_t dwo_id, unsigned int debug_info,
- unsigned int debug_abbrev, unsigned int debug_line,
- unsigned int debug_loc, unsigned int debug_str_offsets,
- unsigned int debug_macinfo, unsigned int debug_macro);
+ add_cu_set(Unit_set* cu_set);
// Lookup a type signature and return TRUE if we have already seen it.
bool
// Add a set of .debug_types and related sections to the output file.
void
- add_tu_set(uint64_t type_sig, unsigned int debug_types,
- unsigned int debug_abbrev, unsigned int debug_line,
- unsigned int debug_str_offsets);
+ add_tu_set(Unit_set* tu_set);
// Finalize the file, write the string tables and index sections,
// and close the file.
finalize();
private:
+ // Contributions to output sections.
+ struct Contribution
+ {
+ section_offset_type output_offset;
+ section_size_type size;
+ const unsigned char* contents;
+ };
+
// Sections in the output file.
struct Section
{
off_t offset;
section_size_type size;
int align;
- };
+ std::vector<Contribution> contributions;
- // A set of sections for a compilation unit or type unit.
- struct Cu_or_tu_set
- {
- uint64_t signature;
- unsigned int debug_info_or_types;
- unsigned int debug_abbrev;
- unsigned int debug_line;
- unsigned int debug_loc;
- unsigned int debug_str_offsets;
- unsigned int debug_macinfo;
- unsigned int debug_macro;
+ Section(const char* n, int a)
+ : name(n), offset(0), size(0), align(a), contributions()
+ { }
};
// The index sections defined by the DWARF Package File Format spec.
class Dwp_index
{
public:
- // Vector for the section index pool.
- typedef std::vector<unsigned int> Shndx_pool;
+ // Vector for the section table.
+ typedef std::vector<const Unit_set*> Section_table;
Dwp_index()
- : capacity_(0), used_(0), hash_table_(NULL), shndx_pool_()
+ : capacity_(0), used_(0), hash_table_(NULL), section_table_(),
+ section_mask_(0)
{ }
~Dwp_index()
// Enter a CU or TU set at the given SLOT in the hash table.
void
- enter_set(unsigned int slot, const Cu_or_tu_set& set);
+ enter_set(unsigned int slot, const Unit_set* set);
// Return the contents of the given SLOT in the hash table of signatures.
uint64_t
{ return this->used_; }
// Return an iterator into the shndx pool.
- Shndx_pool::const_iterator
- shndx_pool() const
- { return this->shndx_pool_.begin(); }
+ Section_table::const_iterator
+ section_table() const
+ { return this->section_table_.begin(); }
- Shndx_pool::const_iterator
- shndx_pool_end() const
- { return this->shndx_pool_.end(); }
+ Section_table::const_iterator
+ section_table_end() const
+ { return this->section_table_.end(); }
- // Return the number of entries in the shndx pool.
+ // Return the number of rows in the section table.
unsigned int
- shndx_pool_size() const
- { return this->shndx_pool_.size(); }
+ section_table_rows() const
+ { return this->section_table_.size(); }
+
+ // Return the mask indicating which columns will be used
+ // in the section table.
+ int
+ section_table_cols() const
+ { return this->section_mask_; }
private:
// Initialize the hash table.
uint64_t* hash_table_;
// The storage for the parallel table of shndx pool indexes.
uint32_t* index_table_;
- // The pool of section indexes.
- Shndx_pool shndx_pool_;
+ // The table of section offsets and sizes.
+ Section_table section_table_;
+ // Bit mask to indicate which debug sections are present in the file.
+ int section_mask_;
}; // End class Dwp_output_file::Dwp_index.
- // Initialize the output file.
+ // Add a new output section and return the section index.
+ unsigned int
+ add_output_section(const char* section_name, int align);
+
+ // Write a new section to the output file.
void
- initialize();
+ write_new_section(const char* section_name, const unsigned char* contents,
+ section_size_type len, int align);
// Write the ELF header.
void
unsigned int link, unsigned int info,
unsigned int align, unsigned int ent_size);
+ // Write the contributions to an output section.
+ void
+ write_contributions(const Section& sect);
+
// Write a CU or TU index section.
template<bool big_endian>
void
unsigned int shnum_;
// Section table. The first entry is shndx 1.
std::vector<Section> sections_;
+ // Section id map. This maps a DW_SECT enum to an shndx.
+ std::vector<unsigned int> section_id_map_;
// File offset of the section header table.
off_t shoff_;
// Section index of the section string table.
File_list* files_;
};
-// A specialization of Dwarf_info_reader, for reading dwo_ids and
-// type signatures from DWARF CUs and TUs.
+// A specialization of Dwarf_info_reader, for reading DWARF CUs and TUs
+// and adding them to the output file.
-class Dwo_id_info_reader : public Dwarf_info_reader
+class Unit_reader : public Dwarf_info_reader
{
public:
- Dwo_id_info_reader(bool is_type_unit,
- Relobj* object,
- unsigned int shndx)
+ Unit_reader(bool is_type_unit, Relobj* object, unsigned int shndx)
: Dwarf_info_reader(is_type_unit, object, NULL, 0, shndx, 0, 0),
- dwo_id_found_(false), dwo_id_(0), type_sig_found_(false), type_sig_(0)
+ output_file_(NULL), sections_(NULL)
{ }
- ~Dwo_id_info_reader()
+ ~Unit_reader()
{ }
- // Return the dwo_id from a DWARF compilation unit DIE in *DWO_ID.
- bool
- get_dwo_id(uint64_t* dwo_id)
- {
- this->parse();
- if (!this->dwo_id_found_)
- return false;
- *dwo_id = this->dwo_id_;
- return true;
- }
-
- // Return the type signature from a DWARF type unit DIE in *TYPE_SIG.
- bool
- get_type_sig(uint64_t* type_sig)
- {
- this->parse();
- if (!this->type_sig_found_)
- return false;
- *type_sig = this->type_sig_;
- return true;
- }
+ // Read the CUs or TUs and add them to the output file.
+ void
+ add_units(Dwp_output_file*, unsigned int debug_abbrev, Section_bounds*);
protected:
// Visit a compilation unit.
// Visit a type unit.
virtual void
- visit_type_unit(off_t tu_offset, off_t type_offset, uint64_t signature,
- Dwarf_die*);
+ visit_type_unit(off_t tu_offset, off_t tu_length, off_t type_offset,
+ uint64_t signature, Dwarf_die*);
private:
- // TRUE if we found a dwo_id.
- bool dwo_id_found_;
- // The dwo_id.
- uint64_t dwo_id_;
- // TRUE if we found a type signature.
- bool type_sig_found_;
- // The type signature.
- uint64_t type_sig_;
+ Dwp_output_file* output_file_;
+ Section_bounds* sections_;
};
+// Return the name of a DWARF .dwo section.
+
+static const char*
+get_dwarf_section_name(elfcpp::DW_SECT section_id)
+{
+ static const char* dwarf_section_names[] = {
+ NULL, // unused
+ ".debug_info.dwo", // DW_SECT_INFO = 1
+ ".debug_types.dwo", // DW_SECT_TYPES = 2
+ ".debug_abbrev.dwo", // DW_SECT_ABBREV = 3
+ ".debug_line.dwo", // DW_SECT_LINE = 4
+ ".debug_loc.dwo", // DW_SECT_LOC = 5
+ ".debug_str_offsets.dwo", // DW_SECT_STR_OFFSETS = 6
+ ".debug_macinfo.dwo", // DW_SECT_MACINFO = 7
+ ".debug_macro.dwo", // DW_SECT_MACRO = 8
+ };
+
+ gold_assert(section_id > 0 && section_id <= elfcpp::DW_SECT_MAX);
+ return dwarf_section_names[section_id];
+}
+
// Class Sized_relobj_dwo.
// Setup the section information.
unsigned int shnum = this->shnum();
this->is_compressed_.resize(shnum);
- this->shndx_map_.resize(shnum);
+ this->sect_offsets_.resize(shnum);
unsigned int debug_info = 0;
unsigned int debug_abbrev = 0;
unsigned int shnum = this->shnum();
this->is_compressed_.resize(shnum);
- this->shndx_map_.resize(shnum);
+ this->sect_offsets_.resize(shnum);
typedef std::vector<unsigned int> Types_list;
Types_list debug_types;
- unsigned int debug_info = 0;
- unsigned int debug_abbrev = 0;
- unsigned int debug_line = 0;
- unsigned int debug_loc = 0;
+ unsigned int debug_shndx[elfcpp::DW_SECT_MAX + 1];
+ for (unsigned int i = 0; i <= elfcpp::DW_SECT_MAX; i++)
+ debug_shndx[i] = 0;
unsigned int debug_str = 0;
- unsigned int debug_str_offsets = 0;
- unsigned int debug_macinfo = 0;
- unsigned int debug_macro = 0;
unsigned int debug_cu_index = 0;
unsigned int debug_tu_index = 0;
- // Scan the section table and look for .dwp index sections.
+ // Scan the section table and collect debug sections.
// (Section index 0 is a dummy section; skip it.)
for (unsigned int i = 1; i < shnum; i++)
{
}
else
continue;
- if (strcmp(suffix, "cu_index") == 0)
+ if (strcmp(suffix, "info.dwo") == 0)
+ debug_shndx[elfcpp::DW_SECT_INFO] = i;
+ else if (strcmp(suffix, "types.dwo") == 0)
+ debug_types.push_back(i);
+ else if (strcmp(suffix, "abbrev.dwo") == 0)
+ debug_shndx[elfcpp::DW_SECT_ABBREV] = i;
+ else if (strcmp(suffix, "line.dwo") == 0)
+ debug_shndx[elfcpp::DW_SECT_LINE] = i;
+ else if (strcmp(suffix, "loc.dwo") == 0)
+ debug_shndx[elfcpp::DW_SECT_LOC] = i;
+ else if (strcmp(suffix, "str.dwo") == 0)
+ debug_str = i;
+ else if (strcmp(suffix, "str_offsets.dwo") == 0)
+ debug_shndx[elfcpp::DW_SECT_STR_OFFSETS] = i;
+ else if (strcmp(suffix, "macinfo.dwo") == 0)
+ debug_shndx[elfcpp::DW_SECT_MACINFO] = i;
+ else if (strcmp(suffix, "macro.dwo") == 0)
+ debug_shndx[elfcpp::DW_SECT_MACRO] = i;
+ else if (strcmp(suffix, "cu_index") == 0)
debug_cu_index = i;
else if (strcmp(suffix, "tu_index") == 0)
debug_tu_index = i;
- else if (strcmp(suffix, "str.dwo") == 0)
- debug_str = i;
}
// Merge the input string table into the output string table.
if (debug_cu_index > 0 || debug_tu_index > 0)
{
if (debug_cu_index > 0)
- this->read_compunit_index(debug_cu_index, output_file);
+ this->read_unit_index(debug_cu_index, debug_shndx, output_file, false);
if (debug_tu_index > 0)
- this->read_typeunit_index(debug_tu_index, output_file);
+ {
+ if (debug_types.size() != 1)
+ gold_fatal(_("%s: .dwp file must have exactly one "
+ ".debug_types.dwo section"), this->name_);
+ debug_shndx[elfcpp::DW_SECT_TYPES] = debug_types[0];
+ this->read_unit_index(debug_tu_index, debug_shndx, output_file, true);
+ }
return;
}
// If we found no index sections, this is a .dwo file.
- // Scan the section table and collect the debug sections.
- for (unsigned int i = 1; i < shnum; i++)
- {
- if (this->section_type(i) != elfcpp::SHT_PROGBITS)
- continue;
- std::string sect_name = this->section_name(i);
- const char* suffix = sect_name.c_str();
- if (is_prefix_of(".debug_", suffix))
- suffix += 7;
- else if (is_prefix_of(".zdebug_", suffix))
- suffix += 8;
- else
- continue;
- // TODO: Check for one of each section (except .debug_types).
- if (strcmp(suffix, "info.dwo") == 0)
- debug_info = i;
- else if (strcmp(suffix, "types.dwo") == 0)
- debug_types.push_back(i);
- else if (strcmp(suffix, "abbrev.dwo") == 0)
- debug_abbrev = i;
- else if (strcmp(suffix, "line.dwo") == 0)
- debug_line = i;
- else if (strcmp(suffix, "loc.dwo") == 0)
- debug_loc = i;
- else if (strcmp(suffix, "str_offsets.dwo") == 0)
- debug_str_offsets = i;
- else if (strcmp(suffix, "macinfo.dwo") == 0)
- debug_macinfo = i;
- else if (strcmp(suffix, "macro.dwo") == 0)
- debug_macro = i;
- }
-
- if (debug_info > 0)
- {
- // Extract the dwo_id from .debug_info.dwo section.
- uint64_t dwo_id;
- Dwo_id_info_reader dwarf_reader(false, this->obj_, debug_info);
- dwarf_reader.set_abbrev_shndx(debug_abbrev);
- if (!dwarf_reader.get_dwo_id(&dwo_id))
- gold_fatal(_("%s: .debug_info.dwo section does not have DW_AT_GNU_dwo_id "
- "attribute"), this->name_);
- this->add_cu_set(output_file, dwo_id, debug_info, debug_abbrev,
- debug_line, debug_loc, debug_str_offsets,
- debug_macinfo, debug_macro);
- }
+ if (debug_shndx[elfcpp::DW_SECT_INFO] > 0)
+ this->add_unit_set(output_file, debug_shndx, false);
+ debug_shndx[elfcpp::DW_SECT_INFO] = 0;
for (Types_list::const_iterator tp = debug_types.begin();
tp != debug_types.end();
++tp)
{
- // Extract the type signature from .debug_types.dwo section.
- uint64_t type_sig;
- gold_assert(*tp > 0);
- Dwo_id_info_reader dwarf_reader(true, this->obj_, *tp);
- dwarf_reader.set_abbrev_shndx(debug_abbrev);
- if (!dwarf_reader.get_type_sig(&type_sig))
- gold_fatal(_("%s: .debug_types.dwo section does not have type signature"),
- this->name_);
- this->add_tu_set(output_file, type_sig, *tp, debug_abbrev, debug_line,
- debug_str_offsets);
+ debug_shndx[elfcpp::DW_SECT_TYPES] = *tp;
+ this->add_unit_set(output_file, debug_shndx, true);
}
}
return obj;
}
-// Read the .debug_cu_index section of a .dwp file,
-// and process the CU sets.
+// Read the .debug_cu_index or .debug_tu_index section of a .dwp file,
+// and process the CU or TU sets.
void
-Dwo_file::read_compunit_index(unsigned int shndx, Dwp_output_file* output_file)
+Dwo_file::read_unit_index(unsigned int shndx, unsigned int *debug_shndx,
+ Dwp_output_file* output_file, bool is_tu_index)
{
if (this->obj_->is_big_endian())
- this->sized_read_compunit_index<true>(shndx, output_file);
+ this->sized_read_unit_index<true>(shndx, debug_shndx, output_file,
+ is_tu_index);
else
- this->sized_read_compunit_index<false>(shndx, output_file);
+ this->sized_read_unit_index<false>(shndx, debug_shndx, output_file,
+ is_tu_index);
}
template <bool big_endian>
void
-Dwo_file::sized_read_compunit_index(unsigned int shndx,
- Dwp_output_file* output_file)
+Dwo_file::sized_read_unit_index(unsigned int shndx,
+ unsigned int *debug_shndx,
+ Dwp_output_file* output_file,
+ bool is_tu_index)
{
- section_size_type len;
- bool is_new;
- const unsigned char* contents = this->section_contents(shndx, &len, &is_new);
+ elfcpp::DW_SECT info_sect = (is_tu_index
+ ? elfcpp::DW_SECT_TYPES
+ : elfcpp::DW_SECT_INFO);
+ unsigned int info_shndx = debug_shndx[info_sect];
+
+ gold_assert(shndx > 0 && info_shndx > 0);
+
+ section_size_type index_len;
+ bool index_is_new;
+ const unsigned char* contents =
+ this->section_contents(shndx, &index_len, &index_is_new);
unsigned int version =
elfcpp::Swap_unaligned<32, big_endian>::readval(contents);
- if (version != 1)
- gold_fatal(_("%s: .debug_cu_index has unsupported version number %d"),
- this->name_, version);
+ // We don't support version 1 anymore because it was experimental
+ // and because in normal use, dwp is not expected to read .dwp files
+ // produced by an earlier version of the tool.
+ if (version != 2)
+ gold_fatal(_("%s: section %s has unsupported version number %d"),
+ this->name_, this->section_name(shndx).c_str(), version);
+
+ unsigned int ncols =
+ elfcpp::Swap_unaligned<32, big_endian>::readval(contents
+ + sizeof(uint32_t));
unsigned int nused =
elfcpp::Swap_unaligned<32, big_endian>::readval(contents
+ 2 * sizeof(uint32_t));
- if (nused == 0)
+ if (ncols == 0 || nused == 0)
return;
unsigned int nslots =
const unsigned char* phash = contents + 4 * sizeof(uint32_t);
const unsigned char* pindex = phash + nslots * sizeof(uint64_t);
- const unsigned char* shndx_pool = pindex + nslots * sizeof(uint32_t);
- const unsigned char* limit = contents + len;
+ const unsigned char* pcolhdrs = pindex + nslots * sizeof(uint32_t);
+ const unsigned char* poffsets = pcolhdrs + ncols * sizeof(uint32_t);
+ const unsigned char* psizes = poffsets + nused * ncols * sizeof(uint32_t);
+ const unsigned char* pend = psizes + nused * ncols * sizeof(uint32_t);
+
+ if (pend > contents + index_len)
+ gold_fatal(_("%s: section %s is corrupt"), this->name_,
+ this->section_name(shndx).c_str());
+
+ // Copy the related sections and track the section offsets and sizes.
+ Section_bounds sections[elfcpp::DW_SECT_MAX + 1];
+ for (int i = elfcpp::DW_SECT_ABBREV; i <= elfcpp::DW_SECT_MAX; ++i)
+ {
+ if (debug_shndx[i] > 0)
+ sections[i] = this->copy_section(output_file, debug_shndx[i],
+ static_cast<elfcpp::DW_SECT>(i));
+ }
- if (shndx_pool >= limit)
- gold_fatal(_("%s: .debug_cu_index is corrupt"), this->name_);
+ // Get the contents of the .debug_info.dwo or .debug_types.dwo section.
+ section_size_type info_len;
+ bool info_is_new;
+ const unsigned char* info_contents =
+ this->section_contents(info_shndx, &info_len, &info_is_new);
// Loop over the slots of the hash table.
for (unsigned int i = 0; i < nslots; ++i)
{
- uint64_t dwo_id =
+ uint64_t signature =
elfcpp::Swap_unaligned<64, big_endian>::readval(phash);
- if (dwo_id != 0)
+ unsigned int index =
+ elfcpp::Swap_unaligned<32, big_endian>::readval(pindex);
+ if (index != 0 && (!is_tu_index || !output_file->lookup_tu(signature)))
{
- unsigned int index =
- elfcpp::Swap_unaligned<32, big_endian>::readval(pindex);
- const unsigned char* shndx_list =
- shndx_pool + index * sizeof(uint32_t);
-
- // Collect the debug sections for this compilation unit set.
- unsigned int debug_info = 0;
- unsigned int debug_abbrev = 0;
- unsigned int debug_line = 0;
- unsigned int debug_loc = 0;
- unsigned int debug_str_offsets = 0;
- unsigned int debug_macinfo = 0;
- unsigned int debug_macro = 0;
- for (;;)
+ Unit_set* unit_set = new Unit_set();
+ unit_set->signature = signature;
+ const unsigned char* pch = pcolhdrs;
+ const unsigned char* porow =
+ poffsets + (index - 1) * ncols * sizeof(uint32_t);
+ const unsigned char* psrow =
+ psizes + (index - 1) * ncols * sizeof(uint32_t);
+
+ // Adjust the offset of each contribution within the input section
+ // by the offset of the input section within the output section.
+ for (unsigned int j = 0; j <= ncols; j++)
{
- if (shndx_list >= limit)
- gold_fatal(_("%s: .debug_cu_index is corrupt"),
- this->name_);
- unsigned int shndx =
- elfcpp::Swap_unaligned<32, big_endian>::readval(shndx_list);
- if (shndx == 0)
- break;
- if (shndx > this->shnum())
- gold_fatal(_("%s: .debug_cu_index has bad shndx"),
- this->name_);
- std::string sect_name = this->section_name(shndx);
- const char* suffix = sect_name.c_str();
- if (is_prefix_of(".debug_", suffix))
- suffix += 7;
- else if (is_prefix_of(".zdebug_", suffix))
- suffix += 8;
- else
- gold_fatal(_("%s: .debug_cu_index refers to "
- "non-debug section"), this->name_);
- if (strcmp(suffix, "info.dwo") == 0)
- debug_info = shndx;
- else if (strcmp(suffix, "abbrev.dwo") == 0)
- debug_abbrev = shndx;
- else if (strcmp(suffix, "line.dwo") == 0)
- debug_line = shndx;
- else if (strcmp(suffix, "loc.dwo") == 0)
- debug_loc = shndx;
- else if (strcmp(suffix, "str_offsets.dwo") == 0)
- debug_str_offsets = shndx;
- else if (strcmp(suffix, "macinfo.dwo") == 0)
- debug_macinfo = shndx;
- else if (strcmp(suffix, "macro.dwo") == 0)
- debug_macro = shndx;
- shndx_list += sizeof(uint32_t);
+ unsigned int dw_sect =
+ elfcpp::Swap_unaligned<64, big_endian>::readval(pch);
+ unsigned int offset =
+ elfcpp::Swap_unaligned<64, big_endian>::readval(porow);
+ unsigned int size =
+ elfcpp::Swap_unaligned<64, big_endian>::readval(psrow);
+ unit_set->sections[dw_sect].offset = (sections[dw_sect].offset
+ + offset);
+ unit_set->sections[dw_sect].size = size;
+ pch += sizeof(uint32_t);
+ porow += sizeof(uint32_t);
+ psrow += sizeof(uint32_t);
}
- this->add_cu_set(output_file, dwo_id, debug_info, debug_abbrev,
- debug_line, debug_loc, debug_str_offsets,
- debug_macinfo, debug_macro);
- }
- phash += sizeof(uint64_t);
- pindex += sizeof(uint32_t);
- }
-
- if (is_new)
- delete[] contents;
-}
-
-// Read the .debug_tu_index section of a .dwp file,
-// and process the TU sets.
-void
-Dwo_file::read_typeunit_index(unsigned int shndx, Dwp_output_file* output_file)
-{
- if (this->obj_->is_big_endian())
- this->sized_read_typeunit_index<true>(shndx, output_file);
- else
- this->sized_read_typeunit_index<false>(shndx, output_file);
-}
-
-template <bool big_endian>
-void
-Dwo_file::sized_read_typeunit_index(unsigned int shndx,
- Dwp_output_file* output_file)
-{
- section_size_type len;
- bool is_new;
- const unsigned char* contents = this->section_contents(shndx, &len, &is_new);
+ const unsigned char* unit_start =
+ info_contents + unit_set->sections[info_sect].offset;
+ section_size_type unit_length = unit_set->sections[info_sect].size;
- unsigned int version =
- elfcpp::Swap_unaligned<32, big_endian>::readval(contents);
- if (version != 1)
- gold_fatal(_("%s: .debug_tu_index has unsupported version number %d"),
- this->name_, version);
-
- unsigned int nused =
- elfcpp::Swap_unaligned<32, big_endian>::readval(contents
- + 2 * sizeof(uint32_t));
- if (nused == 0)
- return;
-
- unsigned int nslots =
- elfcpp::Swap_unaligned<32, big_endian>::readval(contents
- + 3 * sizeof(uint32_t));
-
- const unsigned char* phash = contents + 4 * sizeof(uint32_t);
- const unsigned char* pindex = phash + nslots * sizeof(uint64_t);
- const unsigned char* shndx_pool = pindex + nslots * sizeof(uint32_t);
- const unsigned char* limit = contents + len;
-
- if (shndx_pool >= limit)
- gold_fatal(_("%s: .debug_tu_index is corrupt"), this->name_);
-
- // Loop over the slots of the hash table.
- for (unsigned int i = 0; i < nslots; ++i)
- {
- uint64_t type_sig =
- elfcpp::Swap_unaligned<64, big_endian>::readval(phash);
- if (type_sig != 0)
- {
- unsigned int index =
- elfcpp::Swap_unaligned<32, big_endian>::readval(pindex);
- const unsigned char* shndx_list =
- shndx_pool + index * sizeof(uint32_t);
-
- // Collect the debug sections for this type unit set.
- unsigned int debug_types = 0;
- unsigned int debug_abbrev = 0;
- unsigned int debug_line = 0;
- unsigned int debug_str_offsets = 0;
- for (;;)
+ // Dwp_output_file::add_contribution writes the .debug_info.dwo
+ // section directly to the output file, so we only need to
+ // duplicate contributions for .debug_types.dwo section.
+ if (is_tu_index)
{
- if (shndx_list >= limit)
- gold_fatal(_("%s: .debug_tu_index is corrupt"),
- this->name_);
- unsigned int shndx =
- elfcpp::Swap_unaligned<32, big_endian>::readval(shndx_list);
- if (shndx == 0)
- break;
- if (shndx > this->shnum())
- gold_fatal(_("%s: .debug_tu_index has bad shndx"),
- this->name_);
- std::string sect_name = this->section_name(shndx);
- const char* suffix = sect_name.c_str();
- if (is_prefix_of(".debug_", suffix))
- suffix += 7;
- else if (is_prefix_of(".zdebug_", suffix))
- suffix += 8;
- else
- gold_fatal(_("%s: .debug_tu_index refers to "
- "non-debug section"), this->name_);
- if (strcmp(suffix, "types.dwo") == 0)
- debug_types = shndx;
- else if (strcmp(suffix, "abbrev.dwo") == 0)
- debug_abbrev = shndx;
- else if (strcmp(suffix, "line.dwo") == 0)
- debug_line = shndx;
- else if (strcmp(suffix, "str_offsets.dwo") == 0)
- debug_str_offsets = shndx;
- shndx_list += sizeof(uint32_t);
+ unsigned char *copy = new unsigned char[unit_length];
+ memcpy(copy, unit_start, unit_length);
+ unit_start = copy;
}
- this->add_tu_set(output_file, type_sig, debug_types, debug_abbrev,
- debug_line, debug_str_offsets);
+ section_offset_type off =
+ output_file->add_contribution(info_sect, unit_start,
+ unit_length, 1);
+ unit_set->sections[info_sect].offset = off;
+ if (is_tu_index)
+ output_file->add_tu_set(unit_set);
+ else
+ output_file->add_cu_set(unit_set);
}
phash += sizeof(uint64_t);
pindex += sizeof(uint32_t);
}
- if (is_new)
+ if (index_is_new)
delete[] contents;
+ if (info_is_new)
+ delete[] info_contents;
}
// Merge the input string table section into the output file.
}
// Copy a section from the input file to the output file.
-// If IS_STR_OFFSETS is true, remap the string offsets for the
-// output string table.
+// Return the offset and length of this input section's contribution
+// in the output section. If copying .debug_str_offsets.dwo, remap
+// the string offsets for the output string table.
-unsigned int
+Section_bounds
Dwo_file::copy_section(Dwp_output_file* output_file, unsigned int shndx,
- const char* section_name, bool is_str_offsets)
+ elfcpp::DW_SECT section_id)
{
// Some sections may be referenced from more than one set.
// Don't copy a section more than once.
- if (this->shndx_map_[shndx] > 0)
- return this->shndx_map_[shndx];
+ if (this->sect_offsets_[shndx].size > 0)
+ return this->sect_offsets_[shndx];
+ // Get the section contents. Upon return, if IS_NEW is true, the memory
+ // has been allocated via new; if false, the memory is part of the mapped
+ // input file, and we will need to duplicate it so that it will persist
+ // after we close the input file.
section_size_type len;
bool is_new;
const unsigned char* contents = this->section_contents(shndx, &len, &is_new);
- if (is_str_offsets)
+ if (section_id == elfcpp::DW_SECT_STR_OFFSETS)
{
const unsigned char* remapped = this->remap_str_offsets(contents, len);
if (is_new)
delete[] contents;
contents = remapped;
- is_new = true;
+ }
+ else if (!is_new)
+ {
+ unsigned char* copy = new unsigned char[len];
+ memcpy(copy, contents, len);
+ contents = copy;
}
- this->shndx_map_[shndx] = output_file->add_section(section_name, contents,
- len, 1);
- if (is_new)
- delete[] contents;
+ // Add the contents of the input section to the output section.
+ // The output file takes ownership of the memory pointed to by CONTENTS.
+ section_offset_type off = output_file->add_contribution(section_id, contents,
+ len, 1);
- return this->shndx_map_[shndx];
+ // Store the output section bounds.
+ Section_bounds bounds(off, len);
+ this->sect_offsets_[shndx] = bounds;
+
+ return bounds;
}
// Remap the
return p->second + (val - p->first);
}
-// Add a set of .debug_info and related sections to OUTPUT_FILE.
+// Add a set of .debug_info.dwo or .debug_types.dwo and related sections
+// to OUTPUT_FILE.
void
-Dwo_file::add_cu_set(Dwp_output_file* output_file,
- uint64_t dwo_id,
- unsigned int debug_info,
- unsigned int debug_abbrev,
- unsigned int debug_line,
- unsigned int debug_loc,
- unsigned int debug_str_offsets,
- unsigned int debug_macinfo,
- unsigned int debug_macro)
+Dwo_file::add_unit_set(Dwp_output_file* output_file, unsigned int *debug_shndx,
+ bool is_debug_types)
{
- if (debug_info == 0)
- gold_fatal(_("%s: no .debug_info.dwo section found"), this->name_);
- if (debug_abbrev == 0)
- gold_fatal(_("%s: no .debug_abbrev.dwo section found"), this->name_);
+ unsigned int shndx = (is_debug_types
+ ? debug_shndx[elfcpp::DW_SECT_TYPES]
+ : debug_shndx[elfcpp::DW_SECT_INFO]);
- debug_abbrev = this->copy_section(output_file, debug_abbrev,
- ".debug_abbrev.dwo", false);
- if (debug_line > 0)
- debug_line = this->copy_section(output_file, debug_line,
- ".debug_line.dwo", false);
- if (debug_loc > 0)
- debug_loc = this->copy_section(output_file, debug_loc, ".debug_loc.dwo",
- false);
- if (debug_macinfo > 0)
- debug_macinfo = this->copy_section(output_file, debug_macinfo,
- ".debug_macinfo.dwo", false);
- if (debug_macro > 0)
- debug_macro = this->copy_section(output_file, debug_macro,
- ".debug_macro.dwo", false);
-
- if (debug_str_offsets > 0)
- debug_str_offsets = this->copy_section(output_file, debug_str_offsets,
- ".debug_str_offsets.dwo", true);
-
- debug_info = this->copy_section(output_file, debug_info, ".debug_info.dwo",
- false);
-
- output_file->add_cu_set(dwo_id, debug_info, debug_abbrev, debug_line,
- debug_loc, debug_str_offsets, debug_macinfo,
- debug_macro);
-}
-
-// Add a set of .debug_types and related sections to OUTPUT_FILE.
+ gold_assert(shndx != 0);
-void
-Dwo_file::add_tu_set(Dwp_output_file* output_file,
- uint64_t type_sig,
- unsigned int debug_types,
- unsigned int debug_abbrev,
- unsigned int debug_line,
- unsigned int debug_str_offsets)
-{
- if (debug_types == 0)
- gold_fatal(_("%s: no .debug_types.dwo section found"), this->name_);
- if (debug_abbrev == 0)
+ if (debug_shndx[elfcpp::DW_SECT_ABBREV] == 0)
gold_fatal(_("%s: no .debug_abbrev.dwo section found"), this->name_);
- // Ignore duplicate type signatures.
- if (output_file->lookup_tu(type_sig))
- return;
-
- debug_abbrev = this->copy_section(output_file, debug_abbrev,
- ".debug_abbrev.dwo", false);
- if (debug_line > 0)
- debug_line = this->copy_section(output_file, debug_line,
- ".debug_line.dwo", false);
-
- if (debug_str_offsets > 0)
- debug_str_offsets = this->copy_section(output_file, debug_str_offsets,
- ".debug_str_offsets.dwo", true);
-
- debug_types = this->copy_section(output_file, debug_types,
- ".debug_types.dwo", false);
+ // Copy the related sections and track the section offsets and sizes.
+ Section_bounds sections[elfcpp::DW_SECT_MAX + 1];
+ for (int i = elfcpp::DW_SECT_ABBREV; i <= elfcpp::DW_SECT_MAX; ++i)
+ {
+ if (debug_shndx[i] > 0)
+ sections[i] = this->copy_section(output_file, debug_shndx[i],
+ static_cast<elfcpp::DW_SECT>(i));
+ }
- output_file->add_tu_set(type_sig, debug_types, debug_abbrev, debug_line,
- debug_str_offsets);
+ // Parse the .debug_info or .debug_types section and add each compilation
+ // or type unit to the output file, along with the contributions to the
+ // related sections.
+ Unit_reader reader(is_debug_types, this->obj_, shndx);
+ reader.add_units(output_file, debug_shndx[elfcpp::DW_SECT_ABBREV], sections);
}
// Class Dwp_output_file.
return (off + align - 1) & ~(align - 1);
}
-// Add a section to the output file, and return the new section index.
+// Add a new output section and return the section index.
unsigned int
-Dwp_output_file::add_section(const char* section_name,
- const unsigned char* contents,
- section_size_type len,
- int align)
+Dwp_output_file::add_output_section(const char* section_name, int align)
{
- off_t file_offset = this->next_file_offset_;
- gold_assert(this->size_ > 0 && file_offset > 0);
+ Section sect(section_name, align);
+ this->sections_.push_back(sect);
+ return this->shnum_++;
+}
- file_offset = align_offset(file_offset, align);
+// Add a contribution to a section in the output file, and return the offset
+// of the contribution within the output section. The .debug_info.dwo section
+// is expected to be the largest one, so we will write the contents of this
+// section directly to the output file as we receive contributions, allowing
+// us to free that memory as soon as possible. We will save the remaining
+// contributions until we finalize the layout of the output file.
- ::fseek(this->fd_, file_offset, SEEK_SET);
- if (::fwrite(contents, 1, len, this->fd_) < len)
- gold_fatal(_("%s: error writing section '%s'"), this->name_, section_name);
+section_offset_type
+Dwp_output_file::add_contribution(elfcpp::DW_SECT section_id,
+ const unsigned char* contents,
+ section_size_type len,
+ int align)
+{
+ const char* section_name = get_dwarf_section_name(section_id);
+ gold_assert(section_id < this->section_id_map_.size());
+ unsigned int shndx = this->section_id_map_[section_id];
- section_name = this->shstrtab_.add_with_length(section_name,
- strlen(section_name),
- false, NULL);
- Section sect = { section_name, file_offset, len, align };
- this->sections_.push_back(sect);
+ // Create the section if necessary.
+ if (shndx == 0)
+ {
+ section_name = this->shstrtab_.add_with_length(section_name,
+ strlen(section_name),
+ false, NULL);
+ shndx = this->add_output_section(section_name, align);
+ this->section_id_map_[section_id] = shndx;
+ }
- this->next_file_offset_ = file_offset + len;
- return this->shnum_++;
+ Section& section = this->sections_[shndx - 1];
+
+ section_offset_type section_offset;
+
+ if (section_id == elfcpp::DW_SECT_INFO)
+ {
+ // Write the .debug_info.dwo section directly.
+ // We do not need to free the memory in this case.
+ off_t file_offset = this->next_file_offset_;
+ gold_assert(this->size_ > 0 && file_offset > 0);
+
+ file_offset = align_offset(file_offset, align);
+ if (section.offset == 0)
+ section.offset = file_offset;
+
+ if (align > section.align)
+ {
+ // Since we've already committed to the layout for this
+ // section, an unexpected large alignment boundary may
+ // be impossible to honor.
+ if (align_offset(section.offset, align) != section.offset)
+ gold_fatal(_("%s: alignment (%d) for section '%s' "
+ "cannot be honored"),
+ this->name_, align, section_name);
+ section.align = align;
+ }
+
+ section_offset = file_offset - section.offset;
+ section.size = file_offset + len - section.offset;
+
+ ::fseek(this->fd_, file_offset, SEEK_SET);
+ if (::fwrite(contents, 1, len, this->fd_) < len)
+ gold_fatal(_("%s: error writing section '%s'"), this->name_,
+ section_name);
+ this->next_file_offset_ = file_offset + len;
+ }
+ else
+ {
+ // Collect the contributions and keep track of the total size.
+ if (align > section.align)
+ section.align = align;
+ section_offset = align_offset(section.size, align);
+ section.size = section_offset + len;
+ Contribution contrib = { section_offset, len, contents };
+ section.contributions.push_back(contrib);
+ }
+
+ return section_offset;
}
// Add a set of .debug_info and related sections to the output file.
void
-Dwp_output_file::add_cu_set(uint64_t dwo_id,
- unsigned int debug_info,
- unsigned int debug_abbrev,
- unsigned int debug_line,
- unsigned int debug_loc,
- unsigned int debug_str_offsets,
- unsigned int debug_macinfo,
- unsigned int debug_macro)
+Dwp_output_file::add_cu_set(Unit_set* cu_set)
{
- Cu_or_tu_set cu_set = { dwo_id, debug_info, debug_abbrev, debug_line,
- debug_loc, debug_str_offsets, debug_macinfo,
- debug_macro };
+ uint64_t dwo_id = cu_set->signature;
unsigned int slot;
if (!this->cu_index_.find_or_add(dwo_id, &slot))
this->cu_index_.enter_set(slot, cu_set);
// Add a set of .debug_types and related sections to the output file.
void
-Dwp_output_file::add_tu_set(uint64_t type_sig,
- unsigned int debug_types,
- unsigned int debug_abbrev,
- unsigned int debug_line,
- unsigned int debug_str_offsets)
+Dwp_output_file::add_tu_set(Unit_set* tu_set)
{
- Cu_or_tu_set tu_set = { type_sig, debug_types, debug_abbrev, debug_line,
- 0, debug_str_offsets, 0, 0 };
+ uint64_t type_sig = tu_set->signature;
unsigned int slot;
if (type_sig == this->last_type_sig_)
slot = this->last_tu_slot_;
static_cast<unsigned int>(signature) & (this->capacity_ - 1);
unsigned int secondary_hash;
uint64_t probe = this->hash_table_[slot];
- if (probe != 0 && probe != signature)
+ uint32_t row_index = this->index_table_[slot];
+ if (row_index != 0 && probe != signature)
{
secondary_hash = (static_cast<unsigned int>(signature >> 32)
& (this->capacity_ - 1)) | 1;
{
slot = (slot + secondary_hash) & (this->capacity_ - 1);
probe = this->hash_table_[slot];
- } while (probe != 0 && probe != signature);
+ row_index = this->index_table_[slot];
+ } while (row_index != 0 && probe != signature);
}
*slotp = slot;
- return (probe != 0);
+ return (row_index != 0);
}
// Enter a CU or TU set at the given SLOT in the hash table.
void
Dwp_output_file::Dwp_index::enter_set(unsigned int slot,
- const Cu_or_tu_set& set)
+ const Unit_set* set)
{
gold_assert(slot < this->capacity_);
- gold_assert(set.debug_info_or_types > 0);
- gold_assert(set.debug_abbrev > 0);
-
- // Add the section indexes to the pool.
- uint32_t pool_index = this->shndx_pool_.size();
- this->shndx_pool_.push_back(set.debug_info_or_types);
- this->shndx_pool_.push_back(set.debug_abbrev);
- if (set.debug_line > 0)
- this->shndx_pool_.push_back(set.debug_line);
- if (set.debug_loc > 0)
- this->shndx_pool_.push_back(set.debug_loc);
- if (set.debug_str_offsets > 0)
- this->shndx_pool_.push_back(set.debug_str_offsets);
- if (set.debug_macinfo > 0)
- this->shndx_pool_.push_back(set.debug_macinfo);
- if (set.debug_macro > 0)
- this->shndx_pool_.push_back(set.debug_macro);
- this->shndx_pool_.push_back(0);
+
+ // Add a row to the offsets and sizes tables.
+ this->section_table_.push_back(set);
+ uint32_t row_index = this->section_table_rows();
+
+ // Mark the sections used in this set.
+ for (unsigned int i = 1; i <= elfcpp::DW_SECT_MAX; i++)
+ if (set->sections[i].size > 0)
+ this->section_mask_ |= 1 << i;
// Enter the signature and pool index into the hash table.
gold_assert(this->hash_table_[slot] == 0);
- this->hash_table_[slot] = set.signature;
- this->index_table_[slot] = pool_index;
+ this->hash_table_[slot] = set->signature;
+ this->index_table_[slot] = row_index;
++this->used_;
// Grow the hash table when we exceed 2/3 capacity.
for (unsigned int i = 0; i < old_capacity; ++i)
{
uint64_t signature = old_hash_table[i];
- if (signature != 0)
+ uint32_t row_index = old_index_table[i];
+ if (row_index != 0)
{
unsigned int slot;
bool found = this->find_or_add(signature, &slot);
gold_assert(!found);
this->hash_table_[slot] = signature;
- this->index_table_[slot] = old_index_table[i];
+ this->index_table_[slot] = row_index;
++this->used_;
}
}
delete[] old_index_table;
}
-// Initialize the output file.
-
-void
-Dwp_output_file::initialize()
-{
- // We can't initialize the output file until we've recorded the
- // target info from the first input file.
- gold_assert(this->size_ > 0);
-}
-
// Finalize the file, write the string tables and index sections,
// and close the file.
{
unsigned char* buf;
+ // Write the accumulated output sections.
+ for (unsigned int i = 0; i < this->sections_.size(); i++)
+ {
+ Section& sect = this->sections_[i];
+ // If the offset has already been assigned, the section has been written.
+ if (sect.offset > 0 || sect.size == 0)
+ continue;
+ off_t file_offset = this->next_file_offset_;
+ file_offset = align_offset(file_offset, sect.align);
+ sect.offset = file_offset;
+ this->write_contributions(sect);
+ this->next_file_offset_ = file_offset + sect.size;
+ }
+
// Write the debug string table.
if (this->have_strings_)
{
section_size_type len = this->stringpool_.get_strtab_size();
buf = new unsigned char[len];
this->stringpool_.write_to_buffer(buf, len);
- this->add_section(".debug_str.dwo", buf, len, 1);
+ this->write_new_section(".debug_str.dwo", buf, len, 1);
delete[] buf;
}
// Write the section string table.
this->shstrndx_ = this->shnum_++;
const char* shstrtab_name =
- this->shstrtab_.add_with_length(".shstrtab",
- sizeof(".shstrtab") - 1,
- false, NULL);
+ this->shstrtab_.add_with_length(".shstrtab", sizeof(".shstrtab") - 1,
+ false, NULL);
this->shstrtab_.set_string_offsets();
section_size_type shstrtab_len = this->shstrtab_.get_strtab_size();
buf = new unsigned char[shstrtab_len];
this->fd_ = NULL;
}
+// Write the contributions to an output section.
+
+void
+Dwp_output_file::write_contributions(const Section& sect)
+{
+ for (unsigned int i = 0; i < sect.contributions.size(); ++i)
+ {
+ const Contribution& c = sect.contributions[i];
+ ::fseek(this->fd_, sect.offset + c.output_offset, SEEK_SET);
+ if (::fwrite(c.contents, 1, c.size, this->fd_) < c.size)
+ gold_fatal(_("%s: error writing section '%s'"), this->name_, sect.name);
+ delete[] c.contents;
+ }
+}
+
+// Write a new section to the output file.
+
+void
+Dwp_output_file::write_new_section(const char* section_name,
+ const unsigned char* contents,
+ section_size_type len, int align)
+{
+ section_name = this->shstrtab_.add_with_length(section_name,
+ strlen(section_name),
+ false, NULL);
+ unsigned int shndx = this->add_output_section(section_name, align);
+ Section& section = this->sections_[shndx - 1];
+ off_t file_offset = this->next_file_offset_;
+ file_offset = align_offset(file_offset, align);
+ section.offset = file_offset;
+ section.size = len;
+ ::fseek(this->fd_, file_offset, SEEK_SET);
+ if (::fwrite(contents, 1, len, this->fd_) < len)
+ gold_fatal(_("%s: error writing section '%s'"), this->name_, section_name);
+ this->next_file_offset_ = file_offset + len;
+}
+
// Write a CU or TU index section.
+
template<bool big_endian>
void
Dwp_output_file::write_index(const char* sect_name, const Dwp_index& index)
{
const unsigned int nslots = index.hash_table_total_slots();
const unsigned int nused = index.hash_table_used_slots();
- const unsigned int npool = index.shndx_pool_size();
+ const unsigned int nrows = index.section_table_rows();
+
+ int column_mask = index.section_table_cols();
+ unsigned int ncols = 0;
+ for (unsigned int c = 1; c <= elfcpp::DW_SECT_MAX; ++c)
+ if (column_mask & (1 << c))
+ ncols++;
+ const unsigned int ntable = (nrows * 2 + 1) * ncols;
+
const section_size_type index_size = (4 * sizeof(uint32_t)
+ nslots * sizeof(uint64_t)
+ nslots * sizeof(uint32_t)
- + npool * sizeof(uint32_t));
+ + ntable * sizeof(uint32_t));
// Allocate a buffer for the section contents.
unsigned char* buf = new unsigned char[index_size];
// Write the section header: version number, padding,
// number of used slots and total number of slots.
- elfcpp::Swap_unaligned<32, big_endian>::writeval(p, 1);
+ elfcpp::Swap_unaligned<32, big_endian>::writeval(p, 2);
p += sizeof(uint32_t);
- elfcpp::Swap_unaligned<32, big_endian>::writeval(p, 0);
+ elfcpp::Swap_unaligned<32, big_endian>::writeval(p, ncols);
p += sizeof(uint32_t);
elfcpp::Swap_unaligned<32, big_endian>::writeval(p, nused);
p += sizeof(uint32_t);
p += sizeof(uint32_t);
}
- // Write the section index pool.
- Dwp_index::Shndx_pool::const_iterator pool = index.shndx_pool();
- for (unsigned int i = 0; i < npool; ++i)
+ // Write the first row of the table of section offsets.
+ for (unsigned int c = 1; c <= elfcpp::DW_SECT_MAX; ++c)
{
- gold_assert(pool != index.shndx_pool_end());
- elfcpp::Swap_unaligned<32, big_endian>::writeval(p, *pool);
- p += sizeof(uint32_t);
- ++pool;
+ if (column_mask & (1 << c))
+ {
+ elfcpp::Swap_unaligned<32, big_endian>::writeval(p, c);
+ p += sizeof(uint32_t);
+ }
+ }
+
+ // Write the table of section offsets.
+ Dwp_index::Section_table::const_iterator tbl = index.section_table();
+ for (unsigned int r = 0; r < nrows; ++r)
+ {
+ gold_assert(tbl != index.section_table_end());
+ const Section_bounds* sects = (*tbl)->sections;
+ for (unsigned int c = 1; c <= elfcpp::DW_SECT_MAX; ++c)
+ {
+ if (column_mask & (1 << c))
+ {
+ section_offset_type offset = sects[c].offset;
+ elfcpp::Swap_unaligned<32, big_endian>::writeval(p, offset);
+ p += sizeof(uint32_t);
+ }
+ else
+ gold_assert(sects[c].size == 0);
+ }
+ ++tbl;
+ }
+
+ // Write the table of section sizes.
+ tbl = index.section_table();
+ for (unsigned int r = 0; r < nrows; ++r)
+ {
+ gold_assert(tbl != index.section_table_end());
+ const Section_bounds* sects = (*tbl)->sections;
+ for (unsigned int c = 1; c <= elfcpp::DW_SECT_MAX; ++c)
+ {
+ if (column_mask & (1 << c))
+ {
+ section_size_type size = sects[c].size;
+ elfcpp::Swap_unaligned<32, big_endian>::writeval(p, size);
+ p += sizeof(uint32_t);
+ }
+ else
+ gold_assert(sects[c].size == 0);
+ }
+ ++tbl;
}
gold_assert(p == buf + index_size);
- this->add_section(sect_name, buf, index_size, sizeof(uint64_t));
+ this->write_new_section(sect_name, buf, index_size, sizeof(uint64_t));
delete[] buf;
}
this->files_->push_back(dwo_name);
}
-// Class Dwo_id_info_reader.
+// Class Unit_reader.
+
+// Read the CUs or TUs and add them to the output file.
+
+void
+Unit_reader::add_units(Dwp_output_file* output_file,
+ unsigned int debug_abbrev,
+ Section_bounds* sections)
+{
+ this->output_file_ = output_file;
+ this->sections_ = sections;
+ this->set_abbrev_shndx(debug_abbrev);
+ this->parse();
+}
// Visit a compilation unit.
void
-Dwo_id_info_reader::visit_compilation_unit(off_t, off_t, Dwarf_die* die)
+Unit_reader::visit_compilation_unit(off_t, off_t cu_length, Dwarf_die* die)
{
- this->dwo_id_ = die->uint_attribute(elfcpp::DW_AT_GNU_dwo_id);
- if (this->dwo_id_ != 0)
- this->dwo_id_found_ = true;
+ if (cu_length == 0)
+ return;
+
+ Unit_set* unit_set = new Unit_set();
+ unit_set->signature = die->uint_attribute(elfcpp::DW_AT_GNU_dwo_id);
+ for (unsigned int i = elfcpp::DW_SECT_ABBREV; i <= elfcpp::DW_SECT_MAX; ++i)
+ unit_set->sections[i] = this->sections_[i];
+
+ // Dwp_output_file::add_contribution writes the .debug_info.dwo section
+ // directly to the output file, so we do not need to duplicate the
+ // section contents, and add_contribution does not need to free the memory.
+ section_offset_type off =
+ this->output_file_->add_contribution(elfcpp::DW_SECT_INFO,
+ this->buffer_at_offset(0),
+ cu_length, 1);
+ Section_bounds bounds(off, cu_length);
+ unit_set->sections[elfcpp::DW_SECT_INFO] = bounds;
+ this->output_file_->add_cu_set(unit_set);
}
// Visit a type unit.
void
-Dwo_id_info_reader::visit_type_unit(off_t, off_t, uint64_t signature,
- Dwarf_die*)
+Unit_reader::visit_type_unit(off_t, off_t tu_length, off_t,
+ uint64_t signature, Dwarf_die*)
{
- this->type_sig_ = signature;
- this->type_sig_found_ = true;
+ if (tu_length == 0)
+ return;
+ if (this->output_file_->lookup_tu(signature))
+ return;
+
+ Unit_set* unit_set = new Unit_set();
+ unit_set->signature = signature;
+ for (unsigned int i = elfcpp::DW_SECT_ABBREV; i <= elfcpp::DW_SECT_MAX; ++i)
+ unit_set->sections[i] = this->sections_[i];
+
+ unsigned char* contents = new unsigned char[tu_length];
+ memcpy(contents, this->buffer_at_offset(0), tu_length);
+ section_offset_type off =
+ this->output_file_->add_contribution(elfcpp::DW_SECT_TYPES, contents,
+ tu_length, 1);
+ Section_bounds bounds(off, tu_length);
+ unit_set->sections[elfcpp::DW_SECT_TYPES] = bounds;
+ this->output_file_->add_tu_set(unit_set);
}
}; // End namespace gold
projects / binutils-gdb.git / commitdiff