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[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [gold/] [reduced_debug_output.h] - Rev 190
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// reduced_debug_output.h -- reduce debugging information -*- C++ -*- // Copyright 2008 Free Software Foundation, Inc. // Written by Caleb Howe <cshowe@google.com>. // This file is part of gold. // This program is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation; either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, // MA 02110-1301, USA. // Reduce the size of the debug sections by emitting only debug line number // information. We still need to emit skeleton debug_info and debug_abbrev // sections for standard tools to parse the debug information correctly. These // classes remove all debug information entries from the .debug_info section // except for those describing compilation units as these DIEs contain // references to the debug line information needed by most parsers. #ifndef GOLD_REDUCED_DEBUG_OUTPUT_H #define GOLD_REDUCED_DEBUG_OUTPUT_H #include <map> #include <utility> #include <vector> #include "output.h" namespace gold { class Output_reduced_debug_abbrev_section : public Output_section { public: Output_reduced_debug_abbrev_section(const char* name, elfcpp::Elf_Word flags, elfcpp::Elf_Xword type) : Output_section(name, flags, type), sized_(false), abbrev_count_(0), failed_(false) { this->set_requires_postprocessing(); } unsigned char* get_new_abbrev(uint64_t* abbrev_number, uint64_t abbrev_offset); protected: // Set the final data size. void set_final_data_size(); // Write out the new debug abbreviations void do_write(Output_file*); private: void failed(std::string reason) { gold_warning("%s", reason.c_str()); failed_ = true; } // The reduced debug abbreviations std::vector<unsigned char> data_; // We map the abbreviation table offset and abbreviation number of the // old abbreviation to the number and size of the new abbreviation. std::map<std::pair<uint64_t, uint64_t>, std::pair<uint64_t, uint64_t> > abbrev_mapping_; bool sized_; // The count of abbreviations in the output data int abbrev_count_; // Whether or not the debug reduction has failed for any reason bool failed_; }; class Output_reduced_debug_info_section : public Output_section { public: Output_reduced_debug_info_section(const char* name, elfcpp::Elf_Word flags, elfcpp::Elf_Xword type) : Output_section(name, flags, type), failed_(false) { this->set_requires_postprocessing(); } void set_abbreviations(Output_reduced_debug_abbrev_section* abbrevs) { associated_abbrev_ = abbrevs; } protected: // Set the final data size. void set_final_data_size(); // Write out the new debug info void do_write(Output_file*); private: void failed(std::string reason) { gold_warning("%s", reason.c_str()); this->failed_ = true; } // Given a pointer to the beginning of a die and the beginning of the // associated abbreviation fills in die_end with the end of the information // entry. If successful returns true. Get_die_end also takes a pointer to // the end of the buffer containing the die. If die_end would be beyond the // end of the buffer, or if an unsupported dwarf form is encountered returns // false. bool get_die_end(unsigned char* die, unsigned char* abbrev, unsigned char** die_end, unsigned char* buffer_end, int address_size, bool is64); // The reduced debug info std::vector<unsigned char> data_; // Each debug info section needs to be associated with a debug abbrev section Output_reduced_debug_abbrev_section* associated_abbrev_; // Whether or not the debug reduction has failed for any reason bool failed_; }; } // End namespace gold. #endif // !defined(GOLD_REDUCED_DEBUG_OUTPUT_H)
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