1 | // Copyright (c) 2010 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 |
9 | // notice, this list of conditions and the following disclaimer. |
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. |
14 | // * Neither the name of Google Inc. nor the names of its |
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 |
19 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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28 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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 | |
46 | namespace google_breakpad { |
47 | |
48 | class CodeModules; |
49 | |
50 | class 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 | |