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// Copyright (c) 2006, 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.
// SourceLineResolver returns function/file/line info for a memory address.
// It uses address map files produced by a compatible writer, e.g.
// PDBSourceLineWriter.
#ifndef PROCESSOR_SOURCE_LINE_RESOLVER_H__
#define PROCESSOR_SOURCE_LINE_RESOLVER_H__
#include <string>
#include <ext/hash_map>
#include "google_airbag/common/airbag_types.h"
namespace google_airbag {
using std::string;
using __gnu_cxx::hash_map;
struct StackFrame;
struct StackFrameInfo;
class SourceLineResolver {
public:
typedef u_int64_t MemAddr;
SourceLineResolver();
~SourceLineResolver();
// Adds a module to this resolver, returning true on success.
//
// module_name may be an arbitrary string. Typically, it will be the
// filename of the module, optionally with version identifiers.
//
// map_file should contain line/address mappings for this module.
bool LoadModule(const string &module_name, const string &map_file);
// Returns true if a module with the given name has been loaded.
bool HasModule(const string &module_name) const;
// Fills in the function_base, function_name, source_file_name,
// and source_line fields of the StackFrame. The instruction and
// module_name fields must already be filled in. Additional debugging
// information, if available, is returned. If the information is not
// available, returns NULL. A NULL return value does not indicate an
// error. The caller takes ownership of any returned StackFrameInfo
// object.
StackFrameInfo* FillSourceLineInfo(StackFrame *frame) const;
private:
template<class T> class MemAddrMap;
struct Line;
struct Function;
struct PublicSymbol;
struct File;
struct HashString {
size_t operator()(const string &s) const;
};
class Module;
// All of the modules we've loaded
typedef hash_map<string, Module*, HashString> ModuleMap;
ModuleMap *modules_;
// Disallow unwanted copy ctor and assignment operator
SourceLineResolver(const SourceLineResolver&);
void operator=(const SourceLineResolver&);
};
} // namespace google_airbag
#endif // PROCESSOR_SOURCE_LINE_RESOLVER_H__
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