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// Copyright (c) 2014 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.
// microdump.h: A microdump reader. Microdump is a minified variant of a
// minidump (see minidump.h for documentation) which contains the minimum
// amount of information required to get a stack trace for the crashing thread.
// The information contained in a microdump is:
// - the crashing thread stack
// - system information (os type / version)
// - cpu context (state of the registers)
// - list of mmaps
#ifndef GOOGLE_BREAKPAD_PROCESSOR_MICRODUMP_H__
#define GOOGLE_BREAKPAD_PROCESSOR_MICRODUMP_H__
#include <string>
#include <vector>
#include "common/scoped_ptr.h"
#include "common/using_std_string.h"
#include "google_breakpad/processor/dump_context.h"
#include "google_breakpad/processor/memory_region.h"
#include "google_breakpad/processor/system_info.h"
#include "processor/basic_code_modules.h"
namespace google_breakpad {
// MicrodumpModuleList contains all of the loaded code modules for a process
// in the form of MicrodumpModules. It maintains a vector of these modules
// and provides access to a code module corresponding to a specific address.
class MicrodumpModules : public BasicCodeModules {
public:
// Takes over ownership of |module|.
void Add(const CodeModule* module);
// Enables/disables module address range shrink.
void SetEnableModuleShrink(bool is_enabled);
};
// MicrodumpContext carries a CPU-specific context.
// See dump_context.h for documentation.
class MicrodumpContext : public DumpContext {
public:
virtual void SetContextARM(MDRawContextARM* arm);
virtual void SetContextARM64(MDRawContextARM64* arm64);
virtual void SetContextX86(MDRawContextX86* x86);
virtual void SetContextMIPS(MDRawContextMIPS* mips32);
virtual void SetContextMIPS64(MDRawContextMIPS* mips64);
};
// This class provides access to microdump memory regions.
// See memory_region.h for documentation.
class MicrodumpMemoryRegion : public MemoryRegion {
public:
MicrodumpMemoryRegion();
virtual ~MicrodumpMemoryRegion() {}
// Set this region's address and contents. If we have placed an
// instance of this class in a test fixture class, individual tests
// can use this to provide the region's contents.
void Init(uint64_t base_address, const std::vector<uint8_t>& contents);
virtual uint64_t GetBase() const;
virtual uint32_t GetSize() const;
virtual bool GetMemoryAtAddress(uint64_t address, uint8_t* value) const;
virtual bool GetMemoryAtAddress(uint64_t address, uint16_t* value) const;
virtual bool GetMemoryAtAddress(uint64_t address, uint32_t* value) const;
virtual bool GetMemoryAtAddress(uint64_t address, uint64_t* value) const;
// Print a human-readable representation of the object to stdout.
virtual void Print() const;
private:
// Fetch a little-endian value from ADDRESS in contents_ whose size
// is BYTES, and store it in *VALUE. Returns true on success.
template<typename ValueType>
bool GetMemoryLittleEndian(uint64_t address, ValueType* value) const;
uint64_t base_address_;
std::vector<uint8_t> contents_;
};
// Microdump is the user's interface to a microdump file. It provides access to
// the microdump's context, memory regions and modules.
class Microdump {
public:
explicit Microdump(const string& contents);
virtual ~Microdump() {}
DumpContext* GetContext() { return context_.get(); }
MicrodumpMemoryRegion* GetMemory() { return stack_region_.get(); }
MicrodumpModules* GetModules() { return modules_.get(); }
SystemInfo* GetSystemInfo() { return system_info_.get(); }
string GetCrashReason() { return crash_reason_; }
uint64_t GetCrashAddress() { return crash_address_; }
private:
scoped_ptr<MicrodumpContext> context_;
scoped_ptr<MicrodumpMemoryRegion> stack_region_;
scoped_ptr<MicrodumpModules> modules_;
scoped_ptr<SystemInfo> system_info_;
string crash_reason_;
uint64_t crash_address_;
};
} // namespace google_breakpad
#endif // GOOGLE_BREAKPAD_PROCESSOR_MICRODUMP_H__
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