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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.
//
// fast_source_line_resolver_types.h: definition of nested classes/structs in
// FastSourceLineResolver. It moves the definitions out of
// fast_source_line_resolver.cc, so that other classes could have access
// to these private nested types without including fast_source_line_resolver.cc
//
// Author: lambxsy@google.com (Siyang Xie)
#ifndef PROCESSOR_FAST_SOURCE_LINE_RESOLVER_TYPES_H__
#define PROCESSOR_FAST_SOURCE_LINE_RESOLVER_TYPES_H__
#include "google_breakpad/processor/fast_source_line_resolver.h"
#include "processor/source_line_resolver_base_types.h"
#include <map>
#include <string>
#include "google_breakpad/processor/stack_frame.h"
#include "processor/cfi_frame_info.h"
#include "processor/static_address_map-inl.h"
#include "processor/static_contained_range_map-inl.h"
#include "processor/static_map.h"
#include "processor/static_range_map-inl.h"
#include "processor/windows_frame_info.h"
namespace google_breakpad {
struct FastSourceLineResolver::Line : public SourceLineResolverBase::Line {
void CopyFrom(const Line* line_ptr) {
const char* raw = reinterpret_cast<const char*>(line_ptr);
CopyFrom(raw);
}
// De-serialize the memory data of a Line.
void CopyFrom(const char* raw) {
address = *(reinterpret_cast<const MemAddr*>(raw));
size = *(reinterpret_cast<const MemAddr*>(raw + sizeof(address)));
source_file_id = *(reinterpret_cast<const int32_t*>(
raw + 2 * sizeof(address)));
line = *(reinterpret_cast<const int32_t*>(
raw + 2 * sizeof(address) + sizeof(source_file_id)));
}
};
struct FastSourceLineResolver::Function :
public SourceLineResolverBase::Function {
void CopyFrom(const Function* func_ptr) {
const char* raw = reinterpret_cast<const char*>(func_ptr);
CopyFrom(raw);
}
// De-serialize the memory data of a Function.
void CopyFrom(const char* raw) {
size_t name_size = strlen(raw) + 1;
name = raw;
address = *(reinterpret_cast<const MemAddr*>(raw + name_size));
size = *(reinterpret_cast<const MemAddr*>(
raw + name_size + sizeof(MemAddr)));
parameter_size = *(reinterpret_cast<const int32_t*>(
raw + name_size + 2 * sizeof(MemAddr)));
lines = StaticRangeMap<MemAddr, Line>(
raw + name_size + 2 * sizeof(MemAddr) + sizeof(int32_t));
}
StaticRangeMap<MemAddr, Line> lines;
};
struct FastSourceLineResolver::PublicSymbol :
public SourceLineResolverBase::PublicSymbol {
void CopyFrom(const PublicSymbol* public_symbol_ptr) {
const char* raw = reinterpret_cast<const char*>(public_symbol_ptr);
CopyFrom(raw);
}
// De-serialize the memory data of a PublicSymbol.
void CopyFrom(const char* raw) {
size_t name_size = strlen(raw) + 1;
name = raw;
address = *(reinterpret_cast<const MemAddr*>(raw + name_size));
parameter_size = *(reinterpret_cast<const int32_t*>(
raw + name_size + sizeof(MemAddr)));
}
};
class FastSourceLineResolver::Module: public SourceLineResolverBase::Module {
public:
explicit Module(const string& name) : name_(name), is_corrupt_(false) { }
virtual ~Module() { }
// Looks up the given relative address, and fills the StackFrame struct
// with the result.
virtual void LookupAddress(StackFrame* frame) const;
// Loads a map from the given buffer in char* type.
virtual bool LoadMapFromMemory(char* memory_buffer,
size_t memory_buffer_size);
// Tells whether the loaded symbol data is corrupt. Return value is
// undefined, if the symbol data hasn't been loaded yet.
virtual bool IsCorrupt() const { return is_corrupt_; }
// If Windows stack walking information is available covering ADDRESS,
// return a WindowsFrameInfo structure describing it. If the information
// is not available, returns NULL. A NULL return value does not indicate
// an error. The caller takes ownership of any returned WindowsFrameInfo
// object.
virtual WindowsFrameInfo* FindWindowsFrameInfo(const StackFrame* frame) const;
// If CFI stack walking information is available covering ADDRESS,
// return a CFIFrameInfo structure describing it. If the information
// is not available, return NULL. The caller takes ownership of any
// returned CFIFrameInfo object.
virtual CFIFrameInfo* FindCFIFrameInfo(const StackFrame* frame) const;
// Number of serialized map components of Module.
static const int kNumberMaps_ = 5 + WindowsFrameInfo::STACK_INFO_LAST;
private:
friend class FastSourceLineResolver;
friend class ModuleComparer;
typedef StaticMap<int, char> FileMap;
string name_;
StaticMap<int, char> files_;
StaticRangeMap<MemAddr, Function> functions_;
StaticAddressMap<MemAddr, PublicSymbol> public_symbols_;
bool is_corrupt_;
// Each element in the array is a ContainedRangeMap for a type
// listed in WindowsFrameInfoTypes. These are split by type because
// there may be overlaps between maps of different types, but some
// information is only available as certain types.
StaticContainedRangeMap<MemAddr, char>
windows_frame_info_[WindowsFrameInfo::STACK_INFO_LAST];
// DWARF CFI stack walking data. The Module stores the initial rule sets
// and rule deltas as strings, just as they appear in the symbol file:
// although the file may contain hundreds of thousands of STACK CFI
// records, walking a stack will only ever use a few of them, so it's
// best to delay parsing a record until it's actually needed.
//
// STACK CFI INIT records: for each range, an initial set of register
// recovery rules. The RangeMap's itself gives the starting and ending
// addresses.
StaticRangeMap<MemAddr, char> cfi_initial_rules_;
// STACK CFI records: at a given address, the changes to the register
// recovery rules that take effect at that address. The map key is the
// starting address; the ending address is the key of the next entry in
// this map, or the end of the range as given by the cfi_initial_rules_
// entry (which FindCFIFrameInfo looks up first).
StaticMap<MemAddr, char> cfi_delta_rules_;
};
} // namespace google_breakpad
#endif // PROCESSOR_FAST_SOURCE_LINE_RESOLVER_TYPES_H__
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