| //===-- Unwind.h ------------------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef liblldb_Unwind_h_ |
| #define liblldb_Unwind_h_ |
| |
| // C Includes |
| // C++ Includes |
| // Other libraries and framework includes |
| // Project includes |
| #include "lldb/lldb-private.h" |
| #include "lldb/Host/Mutex.h" |
| |
| namespace lldb_private { |
| |
| class Unwind |
| { |
| protected: |
| //------------------------------------------------------------------ |
| // Classes that inherit from Unwind can see and modify these |
| //------------------------------------------------------------------ |
| Unwind(Thread &thread) : |
| m_thread (thread), |
| m_unwind_mutex() |
| { |
| } |
| |
| public: |
| virtual |
| ~Unwind() |
| { |
| } |
| |
| void |
| Clear() |
| { |
| Mutex::Locker locker(m_unwind_mutex); |
| DoClear(); |
| |
| } |
| |
| uint32_t |
| GetFrameCount() |
| { |
| Mutex::Locker locker(m_unwind_mutex); |
| return DoGetFrameCount(); |
| } |
| |
| uint32_t |
| GetFramesUpTo (uint32_t end_idx) |
| { |
| lldb::addr_t cfa; |
| lldb::addr_t pc; |
| uint32_t idx; |
| |
| for (idx = 0; idx < end_idx; idx++) |
| { |
| if (!DoGetFrameInfoAtIndex (idx, cfa, pc)) |
| { |
| break; |
| } |
| } |
| return idx; |
| } |
| |
| bool |
| GetFrameInfoAtIndex (uint32_t frame_idx, |
| lldb::addr_t& cfa, |
| lldb::addr_t& pc) |
| { |
| Mutex::Locker locker(m_unwind_mutex); |
| return DoGetFrameInfoAtIndex (frame_idx, cfa, pc); |
| } |
| |
| lldb::RegisterContextSP |
| CreateRegisterContextForFrame (StackFrame *frame) |
| { |
| Mutex::Locker locker(m_unwind_mutex); |
| return DoCreateRegisterContextForFrame (frame); |
| } |
| |
| Thread & |
| GetThread() |
| { |
| return m_thread; |
| } |
| |
| protected: |
| //------------------------------------------------------------------ |
| // Classes that inherit from Unwind can see and modify these |
| //------------------------------------------------------------------ |
| virtual void |
| DoClear() = 0; |
| |
| virtual uint32_t |
| DoGetFrameCount() = 0; |
| |
| virtual bool |
| DoGetFrameInfoAtIndex (uint32_t frame_idx, |
| lldb::addr_t& cfa, |
| lldb::addr_t& pc) = 0; |
| |
| virtual lldb::RegisterContextSP |
| DoCreateRegisterContextForFrame (StackFrame *frame) = 0; |
| |
| Thread &m_thread; |
| Mutex m_unwind_mutex; |
| private: |
| DISALLOW_COPY_AND_ASSIGN (Unwind); |
| }; |
| |
| } // namespace lldb_private |
| |
| #endif // liblldb_Unwind_h_ |