1 // Copyright 2013 Google LLC 2 // 3 // Redistribution and use in source and binary forms, with or without 4 // modification, are permitted provided that the following conditions are 5 // met: 6 // 7 // * Redistributions of source code must retain the above copyright 8 // notice, this list of conditions and the following disclaimer. 9 // * Redistributions in binary form must reproduce the above 10 // copyright notice, this list of conditions and the following disclaimer 11 // in the documentation and/or other materials provided with the 12 // distribution. 13 // * Neither the name of Google LLC nor the names of its 14 // contributors may be used to endorse or promote products derived from 15 // this software without specific prior written permission. 16 // 17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 29 // stackwalker_ppc64.h: ppc-specific stackwalker. 30 // 31 // Provides stack frames given ppc64 register context and a memory region 32 // corresponding to a ppc64 stack. 33 34 35 #ifndef PROCESSOR_STACKWALKER_PPC64_H__ 36 #define PROCESSOR_STACKWALKER_PPC64_H__ 37 38 39 #include "google_breakpad/common/breakpad_types.h" 40 #include "google_breakpad/common/minidump_format.h" 41 #include "google_breakpad/processor/stackwalker.h" 42 43 namespace google_breakpad { 44 45 class CodeModules; 46 47 class StackwalkerPPC64 : public Stackwalker { 48 public: 49 // context is a ppc64 context object that gives access to ppc64-specific 50 // register state corresponding to the innermost called frame to be 51 // included in the stack. The other arguments are passed directly through 52 // to the base Stackwalker constructor. 53 StackwalkerPPC64(const SystemInfo* system_info, 54 const MDRawContextPPC64* context, 55 MemoryRegion* memory, 56 const CodeModules* modules, 57 StackFrameSymbolizer* frame_symbolizer); 58 59 private: 60 // Implementation of Stackwalker, using ppc64 context (stack pointer in %r1, 61 // saved program counter in %srr0) and stack conventions (saved stack 62 // pointer at 0(%r1), return address at 8(0(%r1)). 63 virtual StackFrame* GetContextFrame(); 64 virtual StackFrame* GetCallerFrame(const CallStack* stack, 65 bool stack_scan_allowed); 66 67 // Stores the CPU context corresponding to the innermost stack frame to 68 // be returned by GetContextFrame. 69 const MDRawContextPPC64* context_; 70 }; 71 72 73 } // namespace google_breakpad 74 75 76 #endif // PROCESSOR_STACKWALKER_PPC64_H__ 77