The Tor Browser: comparison toolkit/crashreporter/google-breakpad/src/common/dwarf/functioninfo.h

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+// Copyright (c) 2010 Google Inc. All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+// This file contains the definitions for a DWARF2/3 information
+// collector that uses the DWARF2/3 reader interface to build a mapping
+// of addresses to files, lines, and functions.
+#ifndef COMMON_DWARF_FUNCTIONINFO_H__
+#define COMMON_DWARF_FUNCTIONINFO_H__
+#include <map>
+#include <string>
+#include <utility>
+#include <vector>
+#include "common/dwarf/dwarf2reader.h"
+#include "common/using_std_string.h"
+namespace dwarf2reader {
+struct FunctionInfo {
+// Name of the function
+string name;
+// Mangled name of the function
+string mangled_name;
+// File containing this function
+string file;
+// Line number for start of function.
+uint32 line;
+// Beginning address for this function
+uint64 lowpc;
+// End address for this function.
+uint64 highpc;
+};
+struct SourceFileInfo {
+// Name of the source file name
+string name;
+// Low address of source file name
+uint64 lowpc;
+};
+typedef std::map<uint64, FunctionInfo*> FunctionMap;
+typedef std::map<uint64, std::pair<string, uint32> > LineMap;
+// This class is a basic line info handler that fills in the dirs,
+// file, and linemap passed into it with the data produced from the
+// LineInfoHandler.
+class CULineInfoHandler: public LineInfoHandler {
+public:
+//
+CULineInfoHandler(std::vector<SourceFileInfo>* files,
+std::vector<string>* dirs,
+LineMap* linemap);
+virtual ~CULineInfoHandler() { }
+// Called when we define a directory.  We just place NAME into dirs_
+// at position DIR_NUM.
+virtual void DefineDir(const string& name, uint32 dir_num);
+// Called when we define a filename.  We just place
+// concat(dirs_[DIR_NUM], NAME) into files_ at position FILE_NUM.
+virtual void DefineFile(const string& name, int32 file_num,
+uint32 dir_num, uint64 mod_time, uint64 length);
+// Called when the line info reader has a new line, address pair
+// ready for us. ADDRESS is the address of the code, LENGTH is the
+// length of its machine code in bytes, FILE_NUM is the file number
+// containing the code, LINE_NUM is the line number in that file for
+// the code, and COLUMN_NUM is the column number the code starts at,
+// if we know it (0 otherwise).
+virtual void AddLine(uint64 address, uint64 length,
+uint32 file_num, uint32 line_num, uint32 column_num);
+private:
+LineMap* linemap_;
+std::vector<SourceFileInfo>* files_;
+std::vector<string>* dirs_;
+};
+class CUFunctionInfoHandler: public Dwarf2Handler {
+public:
+CUFunctionInfoHandler(std::vector<SourceFileInfo>* files,
+std::vector<string>* dirs,
+LineMap* linemap,
+FunctionMap* offset_to_funcinfo,
+FunctionMap* address_to_funcinfo,
+CULineInfoHandler* linehandler,
+const SectionMap& sections,
+ByteReader* reader)
+: files_(files), dirs_(dirs), linemap_(linemap),
+offset_to_funcinfo_(offset_to_funcinfo),
+address_to_funcinfo_(address_to_funcinfo),
+linehandler_(linehandler), sections_(sections),
+reader_(reader), current_function_info_(NULL) { }
+virtual ~CUFunctionInfoHandler() { }
+// Start to process a compilation unit at OFFSET from the beginning of the
+// .debug_info section.  We want to see all compilation units, so we
+// always return true.
+virtual bool StartCompilationUnit(uint64 offset, uint8 address_size,
+uint8 offset_size, uint64 cu_length,
+uint8 dwarf_version);
+// Start to process a DIE at OFFSET from the beginning of the
+// .debug_info section.  We only care about function related DIE's.
+virtual bool StartDIE(uint64 offset, enum DwarfTag tag);
+// Called when we have an attribute with unsigned data to give to
+// our handler.  The attribute is for the DIE at OFFSET from the
+// beginning of the .debug_info section, has a name of ATTR, a form of
+// FORM, and the actual data of the attribute is in DATA.
+virtual void ProcessAttributeUnsigned(uint64 offset,
+enum DwarfAttribute attr,
+enum DwarfForm form,
+uint64 data);
+// Called when we have an attribute with a DIE reference to give to
+// our handler.  The attribute is for the DIE at OFFSET from the
+// beginning of the .debug_info section, has a name of ATTR, a form of
+// FORM, and the offset of the referenced DIE from the start of the
+// .debug_info section is in DATA.
+virtual void ProcessAttributeReference(uint64 offset,
+enum DwarfAttribute attr,
+enum DwarfForm form,
+uint64 data);
+// Called when we have an attribute with string data to give to
+// our handler.  The attribute is for the DIE at OFFSET from the
+// beginning of the .debug_info section, has a name of ATTR, a form of
+// FORM, and the actual data of the attribute is in DATA.
+virtual void ProcessAttributeString(uint64 offset,
+enum DwarfAttribute attr,
+enum DwarfForm form,
+const string& data);
+// Called when finished processing the DIE at OFFSET.
+// Because DWARF2/3 specifies a tree of DIEs, you may get starts
+// before ends of the previous DIE, as we process children before
+// ending the parent.
+virtual void EndDIE(uint64 offset);
+private:
+std::vector<SourceFileInfo>* files_;
+std::vector<string>* dirs_;
+LineMap* linemap_;
+FunctionMap* offset_to_funcinfo_;
+FunctionMap* address_to_funcinfo_;
+CULineInfoHandler* linehandler_;
+const SectionMap& sections_;
+ByteReader* reader_;
+FunctionInfo* current_function_info_;
+uint64 current_compilation_unit_offset_;
+};
+}  // namespace dwarf2reader
+#endif  // COMMON_DWARF_FUNCTIONINFO_H__

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comparison: toolkit/crashreporter/google-breakpad/src/common/dwarf/functioninfo.h

toolkit/crashreporter/google-breakpad/src/common/dwarf/functioninfo.h