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 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_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