1 | // Copyright (c) 2013 Google Inc. |
2 | // All rights reserved. |
3 | // |
4 | // Redistribution and use in source and binary forms, with or without |
5 | // modification, are permitted provided that the following conditions are |
6 | // met: |
7 | // |
8 | // * Redistributions of source code must retain the above copyright |
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10 | // * Redistributions in binary form must reproduce the above |
11 | // copyright notice, this list of conditions and the following disclaimer |
12 | // in the documentation and/or other materials provided with the |
13 | // distribution. |
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15 | // contributors may be used to endorse or promote products derived from |
16 | // this software without specific prior written permission. |
17 | // |
18 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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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 | |