arguments.hh revision 11800:54436a1784dc
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 __SIM_ARGUMENTS_HH__ 32#define __SIM_ARGUMENTS_HH__ 33 34#include <cassert> 35#include <memory> 36 37#include "mem/fs_translating_port_proxy.hh" 38 39class ThreadContext; 40 41class Arguments 42{ 43 protected: 44 ThreadContext *tc; 45 int number; 46 uint64_t getArg(uint16_t size = (uint16_t)(-1), bool fp = false); 47 48 protected: 49 class Data 50 { 51 public: 52 Data(){} 53 ~Data(); 54 55 private: 56 std::list<char *> data; 57 58 public: 59 char *alloc(size_t size); 60 }; 61 62 std::shared_ptr<Data> data; 63 64 public: 65 Arguments(ThreadContext *ctx, int n = 0) 66 : tc(ctx), number(n), data(new Data()) 67 { assert(number >= 0); } 68 Arguments(const Arguments &args) 69 : tc(args.tc), number(args.number), data(args.data) {} 70 ~Arguments() {} 71 72 ThreadContext *getThreadContext() const { return tc; } 73 74 const Arguments &operator=(const Arguments &args) { 75 if (this != &args) { 76 tc = args.tc; 77 number = args.number; 78 data = args.data; 79 } 80 return *this; 81 } 82 83 // for checking if an argument is NULL 84 bool operator!() { 85 return getArg() == 0; 86 } 87 88 Arguments &operator++() { 89 ++number; 90 assert(number >= 0); 91 return *this; 92 } 93 94 Arguments operator++(int) { 95 Arguments args = *this; 96 ++number; 97 assert(number >= 0); 98 return args; 99 } 100 101 Arguments &operator--() { 102 --number; 103 assert(number >= 0); 104 return *this; 105 } 106 107 Arguments operator--(int) { 108 Arguments args = *this; 109 --number; 110 assert(number >= 0); 111 return args; 112 } 113 114 const Arguments &operator+=(int index) { 115 number += index; 116 assert(number >= 0); 117 return *this; 118 } 119 120 const Arguments &operator-=(int index) { 121 number -= index; 122 assert(number >= 0); 123 return *this; 124 } 125 126 Arguments operator[](int index) { 127 return Arguments(tc, index); 128 } 129 130 template <class T> 131 operator T() { 132 assert(sizeof(T) <= sizeof(uint64_t)); 133 T d = static_cast<T>(getArg(sizeof(T))); 134 return d; 135 } 136 137 template <class T> 138 operator T *() { 139 T *buf = (T *)data->alloc(sizeof(T)); 140 CopyOut(tc, buf, getArg(sizeof(T)), sizeof(T)); 141 return buf; 142 } 143 144 operator char *() { 145 char *buf = data->alloc(2048); 146 CopyStringOut(tc, buf, getArg(), 2048); 147 return buf; 148 } 149}; 150 151#endif // __SIM_ARGUMENTS_HH__ 152