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// stackwalker_sparc.h: sparc-specific stackwalker.
//
// Provides stack frames given sparc register context and a memory region
// corresponding to an sparc stack.
//
// Author: Michael Shang


#ifndef PROCESSOR_STACKWALKER_SPARC_H__
#define PROCESSOR_STACKWALKER_SPARC_H__


#include "google_breakpad/common/breakpad_types.h"
#include "google_breakpad/common/minidump_format.h"
#include "google_breakpad/processor/stackwalker.h"

namespace google_breakpad {

class CodeModules;

class StackwalkerSPARC : public Stackwalker {
 public:
  // context is a sparc context object that gives access to sparc-specific
  // register state corresponding to the innermost called frame to be
  // included in the stack.  The other arguments are passed directly through
  // to the base Stackwalker constructor.
  StackwalkerSPARC(const SystemInfo* system_info,
                   const MDRawContextSPARC* context,
                   MemoryRegion* memory,
                   const CodeModules* modules,
                   StackFrameSymbolizer* frame_symbolizer);

 private:
  // Implementation of Stackwalker, using sparc context (%fp, %sp, %pc) and
  // stack conventions
  virtual StackFrame* GetContextFrame();
  virtual StackFrame* GetCallerFrame(const CallStack* stack,
                                     bool stack_scan_allowed);

  // Stores the CPU context corresponding to the innermost stack frame to
  // be returned by GetContextFrame.
  const MDRawContextSPARC* context_;
};


}  // namespace google_breakpad


#endif  // PROCESSOR_STACKWALKER_SPARC_H__