| // -*- 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_arm.h: arm-specific stackwalker. |
| // |
| // Provides stack frames given arm register context and a memory region |
| // corresponding to an arm stack. |
| // |
| // Author: Mark Mentovai, Ted Mielczarek |
| |
| |
| #ifndef PROCESSOR_STACKWALKER_ARM_H__ |
| #define PROCESSOR_STACKWALKER_ARM_H__ |
| |
| #include "google_breakpad/common/breakpad_types.h" |
| #include "google_breakpad/common/minidump_format.h" |
| #include "google_breakpad/processor/stackwalker.h" |
| |
| namespace google_breakpad { |
| |
| class CodeModules; |
| |
| class StackwalkerARM : public Stackwalker { |
| public: |
| // context is an arm context object that gives access to arm-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. |
| StackwalkerARM(const SystemInfo *system_info, |
| const MDRawContextARM *context, |
| int fp_register, |
| MemoryRegion *memory, |
| const CodeModules *modules, |
| SymbolSupplier *supplier, |
| SourceLineResolverInterface *resolver); |
| |
| // Change the context validity mask of the frame returned by |
| // GetContextFrame to VALID. This is only for use by unit tests; the |
| // default behavior is correct for all application code. |
| void SetContextFrameValidity(int valid) { context_frame_validity_ = valid; } |
| |
| private: |
| // Implementation of Stackwalker, using arm context and stack conventions. |
| virtual StackFrame* GetContextFrame(); |
| virtual StackFrame* GetCallerFrame(const CallStack *stack); |
| |
| // 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. |
| StackFrameARM *GetCallerByCFIFrameInfo(const vector<StackFrame *> &frames, |
| CFIFrameInfo *cfi_frame_info); |
| |
| // Use the frame pointer. The caller takes ownership of the returned frame. |
| // Return NULL on failure. |
| StackFrameARM *GetCallerByFramePointer(const vector<StackFrame *> &frames); |
| |
| // Scan the stack for plausible return addresses. The caller takes ownership |
| // of the returned frame. Return NULL on failure. |
| StackFrameARM *GetCallerByStackScan(const vector<StackFrame *> &frames); |
| |
| // Stores the CPU context corresponding to the youngest stack frame, to |
| // be returned by GetContextFrame. |
| const MDRawContextARM *context_; |
| |
| // The register to use a as frame pointer. The value is -1 if frame pointer |
| // cannot be used. |
| int fp_register_; |
| |
| // Validity mask for youngest stack frame. This is always |
| // CONTEXT_VALID_ALL in real use; it is only changeable for the sake of |
| // unit tests. |
| int context_frame_validity_; |
| }; |
| |
| |
| } // namespace google_breakpad |
| |
| |
| #endif // PROCESSOR_STACKWALKER_ARM_H__ |