| /* |
| * Copyright (c) 2004-2005 The Regents of The University of Michigan |
| * 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 the copyright holders 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. |
| * |
| * Authors: Nathan Binkert |
| */ |
| |
| #ifndef __ARCH_ALPHA_VPTR_HH__ |
| #define __ARCH_ALPHA_VPTR_HH__ |
| |
| #include "arch/vtophys.hh" |
| #include "arch/isa_traits.hh" |
| |
| class ThreadContext; |
| |
| template <class T> |
| class VPtr |
| { |
| public: |
| typedef T Type; |
| |
| private: |
| ThreadContext *tc; |
| Addr ptr; |
| |
| public: |
| ThreadContext *GetTC() const { return tc; } |
| Addr GetPointer() const { return ptr; } |
| |
| public: |
| explicit VPtr(ThreadContext *_tc, Addr p = 0) : tc(_tc), ptr(p) { } |
| template <class U> |
| VPtr(const VPtr<U> &vp) : tc(vp.GetTC()), ptr(vp.GetPointer()) {} |
| ~VPtr() {} |
| |
| bool operator!() const |
| { |
| return ptr == 0; |
| } |
| |
| VPtr<T> operator+(int offset) |
| { |
| VPtr<T> ptr(*this); |
| ptr += offset; |
| |
| return ptr; |
| } |
| |
| const VPtr<T> &operator+=(int offset) |
| { |
| ptr += offset; |
| assert((ptr & (TheISA::PageBytes - 1)) + sizeof(T) |
| < TheISA::PageBytes); |
| |
| return *this; |
| } |
| |
| const VPtr<T> &operator=(Addr p) |
| { |
| assert((p & (TheISA::PageBytes - 1)) + sizeof(T) |
| < TheISA::PageBytes); |
| ptr = p; |
| |
| return *this; |
| } |
| |
| template <class U> |
| const VPtr<T> &operator=(const VPtr<U> &vp) |
| { |
| tc = vp.GetTC(); |
| ptr = vp.GetPointer(); |
| |
| return *this; |
| } |
| |
| operator T *() |
| { |
| panic("Needs to be rewritten\n"); |
| /* void *addr = vtomem(tc, ptr, sizeof(T)); |
| return (T *)addr; |
| */ |
| } |
| |
| T *operator->() |
| { |
| panic("Needs to be rewritten\n"); |
| /* void *addr = vtomem(tc, ptr, sizeof(T)); |
| return (T *)addr; |
| */ |
| } |
| |
| T &operator*() |
| { |
| panic("Needs to be rewritten\n"); |
| /* void *addr = vtomem(tc, ptr, sizeof(T)); |
| return *(T *)addr; |
| */ |
| } |
| }; |
| |
| #endif // __ARCH_ALPHA_VPTR_HH__ |