| // -*- mode: c++ -*- |
| |
| // Copyright (c) 2010 Google Inc. |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| // stackwalker_x86.h: x86-specific stackwalker. |
| // |
| // Provides stack frames given x86 register context and a memory region |
| // corresponding to an x86 stack. |
| // |
| // Author: Mark Mentovai |
| |
| |
| #ifndef PROCESSOR_STACKWALKER_X86_H__ |
| #define PROCESSOR_STACKWALKER_X86_H__ |
| |
| |
| #include "google_breakpad/common/breakpad_types.h" |
| #include "google_breakpad/common/minidump_format.h" |
| #include "google_breakpad/processor/stackwalker.h" |
| #include "google_breakpad/processor/stack_frame_cpu.h" |
| #include "processor/cfi_frame_info.h" |
| |
| namespace google_breakpad { |
| |
| class CodeModules; |
| |
| |
| class StackwalkerX86 : public Stackwalker { |
| public: |
| // context is an x86 context object that gives access to x86-specific |
| // register state corresponding to the innermost called frame to be |
| // included in the stack. The other arguments are passed directly through |
| // to the base Stackwalker constructor. |
| StackwalkerX86(const SystemInfo *system_info, |
| const MDRawContextX86 *context, |
| MemoryRegion *memory, |
| const CodeModules *modules, |
| SymbolSupplier *supplier, |
| SourceLineResolverInterface *resolver); |
| |
| private: |
| // A STACK CFI-driven frame walker for the X86. |
| typedef SimpleCFIWalker<u_int32_t, MDRawContextX86> CFIWalker; |
| |
| // Implementation of Stackwalker, using x86 context (%ebp, %esp, %eip) and |
| // stack conventions (saved %ebp at [%ebp], saved %eip at 4[%ebp], or |
| // alternate conventions as guided by any WindowsFrameInfo available for the |
| // code in question.). |
| virtual StackFrame *GetContextFrame(); |
| virtual StackFrame *GetCallerFrame(const CallStack *stack); |
| |
| // Use windows_frame_info (derived from STACK WIN and FUNC records) |
| // to construct the frame that called frames.back(). The caller |
| // takes ownership of the returned frame. Return NULL on failure. |
| StackFrameX86 *GetCallerByWindowsFrameInfo( |
| const vector<StackFrame*> &frames, |
| WindowsFrameInfo *windows_frame_info); |
| |
| // Use cfi_frame_info (derived from STACK CFI records) to construct |
| // the frame that called frames.back(). The caller takes ownership |
| // of the returned frame. Return NULL on failure. |
| StackFrameX86 *GetCallerByCFIFrameInfo(const vector<StackFrame*> &frames, |
| CFIFrameInfo *cfi_frame_info); |
| |
| // Assuming a traditional frame layout --- where the caller's %ebp |
| // has been pushed just after the return address and the callee's |
| // %ebp points to the saved %ebp --- construct the frame that called |
| // frames.back(). The caller takes ownership of the returned frame. |
| // Return NULL on failure. |
| StackFrameX86 *GetCallerByEBPAtBase(const vector<StackFrame*> &frames); |
| |
| // Stores the CPU context corresponding to the innermost stack frame to |
| // be returned by GetContextFrame. |
| const MDRawContextX86 *context_; |
| |
| // Our register map, for cfi_walker_. |
| static const CFIWalker::RegisterSet cfi_register_map_[]; |
| |
| // Our CFI frame walker. |
| const CFIWalker cfi_walker_; |
| }; |
| |
| |
| } // namespace google_breakpad |
| |
| |
| #endif // PROCESSOR_STACKWALKER_X86_H__ |