1 files changed, 114 insertions, 0 deletions
diff --git a/source/Plugins/Process/Utility/RegisterContextThreadMemory.h b/source/Plugins/Process/Utility/RegisterContextThreadMemory.h
new file mode 100644
index 000000000000..8d7a4b622fe8
--- /dev/null
+++ b/source/Plugins/Process/Utility/RegisterContextThreadMemory.h
@@ -0,0 +1,114 @@
+//===-- RegisterContextThreadMemory.h ---------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef lldb_RegisterContextThreadMemory_h_
+#define lldb_RegisterContextThreadMemory_h_
+
+#include <vector>
+
+#include "lldb/lldb-private.h"
+#include "lldb/Target/RegisterContext.h"
+#include "lldb/Symbol/SymbolContext.h"
+
+namespace lldb_private {
+    
+class RegisterContextThreadMemory : public lldb_private::RegisterContext
+{
+public:
+    RegisterContextThreadMemory (Thread &thread,
+                                 lldb::addr_t register_data_addr);
+    
+    virtual ~RegisterContextThreadMemory();
+    //------------------------------------------------------------------
+    // Subclasses must override these functions
+    //------------------------------------------------------------------
+    virtual void
+    InvalidateAllRegisters ();
+    
+    virtual size_t
+    GetRegisterCount ();
+    
+    virtual const RegisterInfo *
+    GetRegisterInfoAtIndex (size_t reg);
+    
+    virtual size_t
+    GetRegisterSetCount ();
+    
+    virtual const RegisterSet *
+    GetRegisterSet (size_t reg_set);
+    
+    virtual bool
+    ReadRegister (const RegisterInfo *reg_info, RegisterValue &reg_value);
+    
+    virtual bool
+    WriteRegister (const RegisterInfo *reg_info, const RegisterValue &reg_value);
+    
+    // These two functions are used to implement "push" and "pop" of register states.  They are used primarily
+    // for expression evaluation, where we need to push a new state (storing the old one in data_sp) and then
+    // restoring the original state by passing the data_sp we got from ReadAllRegisters to WriteAllRegisterValues.
+    // ReadAllRegisters will do what is necessary to return a coherent set of register values for this thread, which
+    // may mean e.g. interrupting a thread that is sitting in a kernel trap.  That is a somewhat disruptive operation,
+    // so these API's should only be used when this behavior is needed.
+    
+    virtual bool
+    ReadAllRegisterValues (lldb::DataBufferSP &data_sp);
+    
+    virtual bool
+    WriteAllRegisterValues (const lldb::DataBufferSP &data_sp);
+    
+    bool
+    CopyFromRegisterContext (lldb::RegisterContextSP context);
+    
+    virtual uint32_t
+    ConvertRegisterKindToRegisterNumber (uint32_t kind, uint32_t num);
+    
+    //------------------------------------------------------------------
+    // Subclasses can override these functions if desired
+    //------------------------------------------------------------------
+    virtual uint32_t
+    NumSupportedHardwareBreakpoints ();
+    
+    virtual uint32_t
+    SetHardwareBreakpoint (lldb::addr_t addr, size_t size);
+    
+    virtual bool
+    ClearHardwareBreakpoint (uint32_t hw_idx);
+    
+    virtual uint32_t
+    NumSupportedHardwareWatchpoints ();
+    
+    virtual uint32_t
+    SetHardwareWatchpoint (lldb::addr_t addr, size_t size, bool read, bool write);
+    
+    virtual bool
+    ClearHardwareWatchpoint (uint32_t hw_index);
+    
+    virtual bool
+    HardwareSingleStep (bool enable);
+    
+    virtual Error
+    ReadRegisterValueFromMemory (const lldb_private::RegisterInfo *reg_info, lldb::addr_t src_addr, uint32_t src_len, RegisterValue &reg_value);
+    
+    virtual Error
+    WriteRegisterValueToMemory (const lldb_private::RegisterInfo *reg_info, lldb::addr_t dst_addr, uint32_t dst_len, const RegisterValue &reg_value);
+    
+protected:
+    void
+    UpdateRegisterContext ();
+    
+    lldb::ThreadWP m_thread_wp;
+    lldb::RegisterContextSP m_reg_ctx_sp;
+    lldb::addr_t m_register_data_addr;
+    uint32_t m_stop_id;
+private:
+    DISALLOW_COPY_AND_ASSIGN (RegisterContextThreadMemory);
+};
+} // namespace lldb_private
+
+#endif  // lldb_RegisterContextThreadMemory_h_