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// dwarf_reader.cc -- parse dwarf2/3 debug information
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// dwarf_reader.cc -- parse dwarf2/3 debug information
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// Copyright 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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// Copyright 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
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// Written by Ian Lance Taylor <iant@google.com>.
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// Written by Ian Lance Taylor <iant@google.com>.
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// This file is part of gold.
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// This file is part of gold.
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// This program is free software; you can redistribute it and/or modify
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// This program is free software; you can redistribute it and/or modify
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Line 60... |
lsm->basic_block = false;
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lsm->basic_block = false;
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lsm->end_sequence = false;
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lsm->end_sequence = false;
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}
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}
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template<int size, bool big_endian>
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template<int size, bool big_endian>
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Sized_dwarf_line_info<size, big_endian>::Sized_dwarf_line_info(Object* object,
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Sized_dwarf_line_info<size, big_endian>::Sized_dwarf_line_info(
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Object* object,
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unsigned int read_shndx)
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unsigned int read_shndx)
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: data_valid_(false), buffer_(NULL), symtab_buffer_(NULL),
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: data_valid_(false), buffer_(NULL), buffer_start_(NULL),
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directories_(), files_(), current_header_index_(-1)
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symtab_buffer_(NULL), directories_(), files_(), current_header_index_(-1)
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{
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{
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unsigned int debug_shndx;
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unsigned int debug_shndx;
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for (debug_shndx = 1; debug_shndx < object->shnum(); ++debug_shndx)
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for (debug_shndx = 1; debug_shndx < object->shnum(); ++debug_shndx)
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{
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{
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// FIXME: do this more efficiently: section_name() isn't super-fast
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// FIXME: do this more efficiently: section_name() isn't super-fast
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std::string name = object->section_name(debug_shndx);
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std::string name = object->section_name(debug_shndx);
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if (name == ".debug_line" || name == ".zdebug_line")
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if (name == ".debug_line" || name == ".zdebug_line")
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{
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{
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section_size_type buffer_size;
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section_size_type buffer_size;
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this->buffer_ = object->section_contents(debug_shndx, &buffer_size,
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bool is_new = false;
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false);
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this->buffer_ = object->decompressed_section_contents(debug_shndx,
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&buffer_size,
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&is_new);
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if (is_new)
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this->buffer_start_ = this->buffer_;
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this->buffer_end_ = this->buffer_ + buffer_size;
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this->buffer_end_ = this->buffer_ + buffer_size;
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break;
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break;
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}
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}
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}
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}
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if (this->buffer_ == NULL)
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if (this->buffer_ == NULL)
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return;
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return;
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section_size_type uncompressed_size = 0;
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unsigned char* uncompressed_data = NULL;
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if (object->section_is_compressed(debug_shndx, &uncompressed_size))
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{
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uncompressed_data = new unsigned char[uncompressed_size];
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if (!decompress_input_section(this->buffer_,
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this->buffer_end_ - this->buffer_,
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uncompressed_data,
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uncompressed_size))
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object->error(_("could not decompress section %s"),
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object->section_name(debug_shndx).c_str());
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this->buffer_ = uncompressed_data;
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this->buffer_end_ = this->buffer_ + uncompressed_size;
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}
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// Find the relocation section for ".debug_line".
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// Find the relocation section for ".debug_line".
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// We expect these for relobjs (.o's) but not dynobjs (.so's).
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// We expect these for relobjs (.o's) but not dynobjs (.so's).
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bool got_relocs = false;
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bool got_relocs = false;
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for (unsigned int reloc_shndx = 0;
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for (unsigned int reloc_shndx = 0;
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reloc_shndx < object->shnum();
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reloc_shndx < object->shnum();
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Line 480... |
bool add_line = this->process_one_opcode(lineptr, &lsm, &oplength);
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bool add_line = this->process_one_opcode(lineptr, &lsm, &oplength);
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if (add_line
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if (add_line
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&& (shndx == -1U || lsm.shndx == -1U || shndx == lsm.shndx))
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&& (shndx == -1U || lsm.shndx == -1U || shndx == lsm.shndx))
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{
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{
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Offset_to_lineno_entry entry
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Offset_to_lineno_entry entry
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= { lsm.address, this->current_header_index_,
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= { static_cast<off_t>(lsm.address),
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lsm.file_num, true, lsm.line_num };
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this->current_header_index_,
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static_cast<unsigned int>(lsm.file_num),
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true, lsm.line_num };
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std::vector<Offset_to_lineno_entry>&
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std::vector<Offset_to_lineno_entry>&
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map(this->line_number_map_[lsm.shndx]);
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map(this->line_number_map_[lsm.shndx]);
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// If we see two consecutive entries with the same
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// If we see two consecutive entries with the same
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// offset and a real line number, then mark the first
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// offset and a real line number, then mark the first
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// one as non-canonical.
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// one as non-canonical.
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