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comparison: toolkit/crashreporter/google-breakpad/src/processor/stackwalker_x86.h
toolkit/crashreporter/google-breakpad/src/processor/stackwalker_x86.h
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| 1 // -*- mode: c++ -*- | |
| 2 | |
| 3 // Copyright (c) 2010 Google Inc. | |
| 4 // All rights reserved. | |
| 5 // | |
| 6 // Redistribution and use in source and binary forms, with or without | |
| 7 // modification, are permitted provided that the following conditions are | |
| 8 // met: | |
| 9 // | |
| 10 // * Redistributions of source code must retain the above copyright | |
| 11 // notice, this list of conditions and the following disclaimer. | |
| 12 // * Redistributions in binary form must reproduce the above | |
| 13 // copyright notice, this list of conditions and the following disclaimer | |
| 14 // in the documentation and/or other materials provided with the | |
| 15 // distribution. | |
| 16 // * Neither the name of Google Inc. nor the names of its | |
| 17 // contributors may be used to endorse or promote products derived from | |
| 18 // this software without specific prior written permission. | |
| 19 // | |
| 20 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 21 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 22 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 23 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 24 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 25 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 26 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 27 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 28 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 29 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 30 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 31 | |
| 32 // stackwalker_x86.h: x86-specific stackwalker. | |
| 33 // | |
| 34 // Provides stack frames given x86 register context and a memory region | |
| 35 // corresponding to an x86 stack. | |
| 36 // | |
| 37 // Author: Mark Mentovai | |
| 38 | |
| 39 | |
| 40 #ifndef PROCESSOR_STACKWALKER_X86_H__ | |
| 41 #define PROCESSOR_STACKWALKER_X86_H__ | |
| 42 | |
| 43 #include <vector> | |
| 44 | |
| 45 #include "google_breakpad/common/breakpad_types.h" | |
| 46 #include "google_breakpad/common/minidump_format.h" | |
| 47 #include "google_breakpad/processor/stackwalker.h" | |
| 48 #include "google_breakpad/processor/stack_frame_cpu.h" | |
| 49 #include "processor/cfi_frame_info.h" | |
| 50 | |
| 51 namespace google_breakpad { | |
| 52 | |
| 53 class CodeModules; | |
| 54 | |
| 55 | |
| 56 class StackwalkerX86 : public Stackwalker { | |
| 57 public: | |
| 58 // context is an x86 context object that gives access to x86-specific | |
| 59 // register state corresponding to the innermost called frame to be | |
| 60 // included in the stack. The other arguments are passed directly through | |
| 61 // to the base Stackwalker constructor. | |
| 62 StackwalkerX86(const SystemInfo* system_info, | |
| 63 const MDRawContextX86* context, | |
| 64 MemoryRegion* memory, | |
| 65 const CodeModules* modules, | |
| 66 StackFrameSymbolizer* frame_symbolizer); | |
| 67 | |
| 68 private: | |
| 69 // A STACK CFI-driven frame walker for the X86. | |
| 70 typedef SimpleCFIWalker<uint32_t, MDRawContextX86> CFIWalker; | |
| 71 | |
| 72 // Implementation of Stackwalker, using x86 context (%ebp, %esp, %eip) and | |
| 73 // stack conventions (saved %ebp at [%ebp], saved %eip at 4[%ebp], or | |
| 74 // alternate conventions as guided by any WindowsFrameInfo available for the | |
| 75 // code in question.). | |
| 76 virtual StackFrame* GetContextFrame(); | |
| 77 virtual StackFrame* GetCallerFrame(const CallStack* stack, | |
| 78 bool stack_scan_allowed); | |
| 79 | |
| 80 // Use windows_frame_info (derived from STACK WIN and FUNC records) | |
| 81 // to construct the frame that called frames.back(). The caller | |
| 82 // takes ownership of the returned frame. Return NULL on failure. | |
| 83 StackFrameX86* GetCallerByWindowsFrameInfo( | |
| 84 const vector<StackFrame*> &frames, | |
| 85 WindowsFrameInfo* windows_frame_info, | |
| 86 bool stack_scan_allowed); | |
| 87 | |
| 88 // Use cfi_frame_info (derived from STACK CFI records) to construct | |
| 89 // the frame that called frames.back(). The caller takes ownership | |
| 90 // of the returned frame. Return NULL on failure. | |
| 91 StackFrameX86* GetCallerByCFIFrameInfo(const vector<StackFrame*> &frames, | |
| 92 CFIFrameInfo* cfi_frame_info); | |
| 93 | |
| 94 // Assuming a traditional frame layout --- where the caller's %ebp | |
| 95 // has been pushed just after the return address and the callee's | |
| 96 // %ebp points to the saved %ebp --- construct the frame that called | |
| 97 // frames.back(). The caller takes ownership of the returned frame. | |
| 98 // Return NULL on failure. | |
| 99 StackFrameX86* GetCallerByEBPAtBase(const vector<StackFrame*> &frames, | |
| 100 bool stack_scan_allowed); | |
| 101 | |
| 102 // Stores the CPU context corresponding to the innermost stack frame to | |
| 103 // be returned by GetContextFrame. | |
| 104 const MDRawContextX86* context_; | |
| 105 | |
| 106 // Our register map, for cfi_walker_. | |
| 107 static const CFIWalker::RegisterSet cfi_register_map_[]; | |
| 108 | |
| 109 // Our CFI frame walker. | |
| 110 const CFIWalker cfi_walker_; | |
| 111 }; | |
| 112 | |
| 113 | |
| 114 } // namespace google_breakpad | |
| 115 | |
| 116 | |
| 117 #endif // PROCESSOR_STACKWALKER_X86_H__ |
