arguments.hh revision 4084
1/* 2 * Copyright (c) 2003-2005 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Nathan Binkert 29 */ 30 31#ifndef __ARCH_ALPHA_ARGUMENTS_HH__ 32#define __ARCH_ALPHA_ARGUMENTS_HH__ 33 34#include <assert.h> 35 36#include "arch/alpha/vtophys.hh" 37#include "base/refcnt.hh" 38#include "mem/vport.hh" 39#include "sim/host.hh" 40 41class ThreadContext; 42 43namespace AlphaISA { 44 45class Arguments 46{ 47 protected: 48 ThreadContext *tc; 49 int number; 50 uint64_t getArg(bool fp = false); 51 52 protected: 53 class Data : public RefCounted 54 { 55 public: 56 Data(){} 57 ~Data(); 58 59 private: 60 std::list<char *> data; 61 62 public: 63 char *alloc(size_t size); 64 }; 65 66 RefCountingPtr<Data> data; 67 68 public: 69 Arguments(ThreadContext *ctx, int n = 0) 70 : tc(ctx), number(n), data(NULL) 71 { assert(number >= 0); data = new Data;} 72 Arguments(const Arguments &args) 73 : tc(args.tc), number(args.number), data(args.data) {} 74 ~Arguments() {} 75 76 ThreadContext *getThreadContext() const { return tc; } 77 78 const Arguments &operator=(const Arguments &args) { 79 tc = args.tc; 80 number = args.number; 81 data = args.data; 82 return *this; 83 } 84 85 Arguments &operator++() { 86 ++number; 87 assert(number >= 0); 88 return *this; 89 } 90 91 Arguments operator++(int) { 92 Arguments args = *this; 93 ++number; 94 assert(number >= 0); 95 return args; 96 } 97 98 Arguments &operator--() { 99 --number; 100 assert(number >= 0); 101 return *this; 102 } 103 104 Arguments operator--(int) { 105 Arguments args = *this; 106 --number; 107 assert(number >= 0); 108 return args; 109 } 110 111 const Arguments &operator+=(int index) { 112 number += index; 113 assert(number >= 0); 114 return *this; 115 } 116 117 const Arguments &operator-=(int index) { 118 number -= index; 119 assert(number >= 0); 120 return *this; 121 } 122 123 Arguments operator[](int index) { 124 return Arguments(tc, index); 125 } 126 127 template <class T> 128 operator T() { 129 assert(sizeof(T) <= sizeof(uint64_t)); 130 T data = static_cast<T>(getArg()); 131 return data; 132 } 133 134 template <class T> 135 operator T *() { 136 T *buf = (T *)data->alloc(sizeof(T)); 137 CopyData(tc, buf, getArg(), sizeof(T)); 138 return buf; 139 } 140 141 operator char *() { 142 char *buf = data->alloc(2048); 143 CopyStringOut(tc, buf, getArg(), 2048); 144 return buf; 145 } 146}; 147 148}; // namespace AlphaISA 149 150#endif // __ARCH_ALPHA_ARGUMENTS_HH__ 151