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29
30// stackwalker_ppc.h: ppc-specific stackwalker.
31//
32// Provides stack frames given ppc register context and a memory region
33// corresponding to a ppc stack.
34//
35// Author: Mark Mentovai
36
37
38#ifndef PROCESSOR_STACKWALKER_PPC_H__
39#define PROCESSOR_STACKWALKER_PPC_H__
40
41
42#include "google_breakpad/common/breakpad_types.h"
43#include "google_breakpad/common/minidump_format.h"
44#include "google_breakpad/processor/stackwalker.h"
45
46namespace google_breakpad {
47
48class CodeModules;
49
50class StackwalkerPPC : public Stackwalker {
51 public:
52 // context is a ppc context object that gives access to ppc-specific
53 // register state corresponding to the innermost called frame to be
54 // included in the stack. The other arguments are passed directly through
55 // to the base Stackwalker constructor.
56 StackwalkerPPC(const SystemInfo* system_info,
57 const MDRawContextPPC* context,
58 MemoryRegion* memory,
59 const CodeModules* modules,
60 StackFrameSymbolizer* frame_symbolizer);
61
62 private:
63 // Implementation of Stackwalker, using ppc context (stack pointer in %r1,
64 // saved program counter in %srr0) and stack conventions (saved stack
65 // pointer at 0(%r1), return address at 8(0(%r1)).
66 virtual StackFrame* GetContextFrame();
67 virtual StackFrame* GetCallerFrame(const CallStack* stack,
68 bool stack_scan_allowed);
69
70 // Stores the CPU context corresponding to the innermost stack frame to
71 // be returned by GetContextFrame.
72 const MDRawContextPPC* context_;
73};
74
75
76} // namespace google_breakpad
77
78
79#endif // PROCESSOR_STACKWALKER_PPC_H__
80