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 20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 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