toolkit/crashreporter/google-breakpad/src/processor/stackwalker_arm.h@6474c204b198 (annotated)
toolkit/crashreporter/google-breakpad/src/processor/stackwalker_arm.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | // -*- mode: C++ -*- |
| michael@0 | 2 | |
| michael@0 | 3 | // Copyright (c) 2010 Google Inc. |
| michael@0 | 4 | // All rights reserved. |
| michael@0 | 5 | // |
| michael@0 | 6 | // Redistribution and use in source and binary forms, with or without |
| michael@0 | 7 | // modification, are permitted provided that the following conditions are |
| michael@0 | 8 | // met: |
| michael@0 | 9 | // |
| michael@0 | 10 | // * Redistributions of source code must retain the above copyright |
| michael@0 | 11 | // notice, this list of conditions and the following disclaimer. |
| michael@0 | 12 | // * Redistributions in binary form must reproduce the above |
| michael@0 | 13 | // copyright notice, this list of conditions and the following disclaimer |
| michael@0 | 14 | // in the documentation and/or other materials provided with the |
| michael@0 | 15 | // distribution. |
| michael@0 | 16 | // * Neither the name of Google Inc. nor the names of its |
| michael@0 | 17 | // contributors may be used to endorse or promote products derived from |
| michael@0 | 18 | // this software without specific prior written permission. |
| michael@0 | 19 | // |
| michael@0 | 20 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| michael@0 | 21 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| michael@0 | 22 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| michael@0 | 23 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| michael@0 | 24 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| michael@0 | 25 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| michael@0 | 26 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| michael@0 | 27 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| michael@0 | 28 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| michael@0 | 29 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| michael@0 | 30 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| michael@0 | 31 | |
| michael@0 | 32 | // stackwalker_arm.h: arm-specific stackwalker. |
| michael@0 | 33 | // |
| michael@0 | 34 | // Provides stack frames given arm register context and a memory region |
| michael@0 | 35 | // corresponding to an arm stack. |
| michael@0 | 36 | // |
| michael@0 | 37 | // Author: Mark Mentovai, Ted Mielczarek |
| michael@0 | 38 | |
| michael@0 | 39 | |
| michael@0 | 40 | #ifndef PROCESSOR_STACKWALKER_ARM_H__ |
| michael@0 | 41 | #define PROCESSOR_STACKWALKER_ARM_H__ |
| michael@0 | 42 | |
| michael@0 | 43 | #include "google_breakpad/common/breakpad_types.h" |
| michael@0 | 44 | #include "google_breakpad/common/minidump_format.h" |
| michael@0 | 45 | #include "google_breakpad/processor/stackwalker.h" |
| michael@0 | 46 | |
| michael@0 | 47 | namespace google_breakpad { |
| michael@0 | 48 | |
| michael@0 | 49 | class CodeModules; |
| michael@0 | 50 | |
| michael@0 | 51 | class StackwalkerARM : public Stackwalker { |
| michael@0 | 52 | public: |
| michael@0 | 53 | // context is an arm context object that gives access to arm-specific |
| michael@0 | 54 | // register state corresponding to the innermost called frame to be |
| michael@0 | 55 | // included in the stack. The other arguments are passed directly through |
| michael@0 | 56 | // to the base Stackwalker constructor. |
| michael@0 | 57 | StackwalkerARM(const SystemInfo* system_info, |
| michael@0 | 58 | const MDRawContextARM* context, |
| michael@0 | 59 | int fp_register, |
| michael@0 | 60 | MemoryRegion* memory, |
| michael@0 | 61 | const CodeModules* modules, |
| michael@0 | 62 | StackFrameSymbolizer* frame_symbolizer); |
| michael@0 | 63 | |
| michael@0 | 64 | // Change the context validity mask of the frame returned by |
| michael@0 | 65 | // GetContextFrame to VALID. This is only for use by unit tests; the |
| michael@0 | 66 | // default behavior is correct for all application code. |
| michael@0 | 67 | void SetContextFrameValidity(int valid) { context_frame_validity_ = valid; } |
| michael@0 | 68 | |
| michael@0 | 69 | private: |
| michael@0 | 70 | // Implementation of Stackwalker, using arm context and stack conventions. |
| michael@0 | 71 | virtual StackFrame* GetContextFrame(); |
| michael@0 | 72 | virtual StackFrame* GetCallerFrame(const CallStack* stack, |
| michael@0 | 73 | bool stack_scan_allowed); |
| michael@0 | 74 | |
| michael@0 | 75 | // Use cfi_frame_info (derived from STACK CFI records) to construct |
| michael@0 | 76 | // the frame that called frames.back(). The caller takes ownership |
| michael@0 | 77 | // of the returned frame. Return NULL on failure. |
| michael@0 | 78 | StackFrameARM* GetCallerByCFIFrameInfo(const vector<StackFrame*> &frames, |
| michael@0 | 79 | CFIFrameInfo* cfi_frame_info); |
| michael@0 | 80 | |
| michael@0 | 81 | // Use the frame pointer. The caller takes ownership of the returned frame. |
| michael@0 | 82 | // Return NULL on failure. |
| michael@0 | 83 | StackFrameARM* GetCallerByFramePointer(const vector<StackFrame*> &frames); |
| michael@0 | 84 | |
| michael@0 | 85 | // Scan the stack for plausible return addresses. The caller takes ownership |
| michael@0 | 86 | // of the returned frame. Return NULL on failure. |
| michael@0 | 87 | StackFrameARM* GetCallerByStackScan(const vector<StackFrame*> &frames); |
| michael@0 | 88 | |
| michael@0 | 89 | // Stores the CPU context corresponding to the youngest stack frame, to |
| michael@0 | 90 | // be returned by GetContextFrame. |
| michael@0 | 91 | const MDRawContextARM* context_; |
| michael@0 | 92 | |
| michael@0 | 93 | // The register to use a as frame pointer. The value is -1 if frame pointer |
| michael@0 | 94 | // cannot be used. |
| michael@0 | 95 | int fp_register_; |
| michael@0 | 96 | |
| michael@0 | 97 | // Validity mask for youngest stack frame. This is always |
| michael@0 | 98 | // CONTEXT_VALID_ALL in real use; it is only changeable for the sake of |
| michael@0 | 99 | // unit tests. |
| michael@0 | 100 | int context_frame_validity_; |
| michael@0 | 101 | }; |
| michael@0 | 102 | |
| michael@0 | 103 | |
| michael@0 | 104 | } // namespace google_breakpad |
| michael@0 | 105 | |
| michael@0 | 106 | |
| michael@0 | 107 | #endif // PROCESSOR_STACKWALKER_ARM_H__ |
