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29 
30 // stackwalker_ppc64.h: ppc-specific stackwalker.
31 //
32 // Provides stack frames given ppc64 register context and a memory region
33 // corresponding to a ppc64 stack.
34 
35 
36 #ifndef PROCESSOR_STACKWALKER_PPC64_H__
37 #define PROCESSOR_STACKWALKER_PPC64_H__
38 
39 
40 #include "google_breakpad/common/breakpad_types.h"
41 #include "google_breakpad/common/minidump_format.h"
42 #include "google_breakpad/processor/stackwalker.h"
43 
44 namespace google_breakpad {
45 
46 class CodeModules;
47 
48 class StackwalkerPPC64 : public Stackwalker {
49  public:
50   // context is a ppc64 context object that gives access to ppc64-specific
51   // register state corresponding to the innermost called frame to be
52   // included in the stack.  The other arguments are passed directly through
53   // to the base Stackwalker constructor.
54   StackwalkerPPC64(const SystemInfo* system_info,
55                    const MDRawContextPPC64* context,
56                    MemoryRegion* memory,
57                    const CodeModules* modules,
58                    StackFrameSymbolizer* frame_symbolizer);
59 
60  private:
61   // Implementation of Stackwalker, using ppc64 context (stack pointer in %r1,
62   // saved program counter in %srr0) and stack conventions (saved stack
63   // pointer at 0(%r1), return address at 8(0(%r1)).
64   virtual StackFrame* GetContextFrame();
65   virtual StackFrame* GetCallerFrame(const CallStack* stack,
66                                      bool stack_scan_allowed);
67 
68   // Stores the CPU context corresponding to the innermost stack frame to
69   // be returned by GetContextFrame.
70   const MDRawContextPPC64* context_;
71 };
72 
73 
74 }  // namespace google_breakpad
75 
76 
77 #endif  // PROCESSOR_STACKWALKER_PPC64_H__
78