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Diffstat (limited to 'toolkit/crashreporter/google-breakpad/src/processor/stackwalker_arm.h')
-rw-r--r-- | toolkit/crashreporter/google-breakpad/src/processor/stackwalker_arm.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/toolkit/crashreporter/google-breakpad/src/processor/stackwalker_arm.h b/toolkit/crashreporter/google-breakpad/src/processor/stackwalker_arm.h new file mode 100644 index 000000000..9081a40cd --- /dev/null +++ b/toolkit/crashreporter/google-breakpad/src/processor/stackwalker_arm.h @@ -0,0 +1,107 @@ +// -*- 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, + StackFrameSymbolizer* frame_symbolizer); + + // 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, + bool stack_scan_allowed); + + // 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__ |