arguments.hh revision 56
1/* 2 * Copyright (c) 2003 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 29#ifndef __ARGUMENTS_HH__ 30#define __ARGUMENTS_HH__ 31 32#include <assert.h> 33 34#include "sim/host.hh" 35#include "targetarch/kernel.hh" 36#include "base/refcnt.hh" 37 38class ExecContext; 39 40class AlphaArguments 41{ 42 protected: 43 ExecContext *xc; 44 int number; 45 uint64_t getArg(bool fp = false); 46 47 protected: 48 class Data : public RefCounted 49 { 50 public: 51 Data(){} 52 ~Data(); 53 54 private: 55 std::list<char *> data; 56 57 public: 58 char *alloc(size_t size); 59 }; 60 61 RefCountingPtr<Data> data; 62 63 public: 64 AlphaArguments(ExecContext *ctx, int n = 0) 65 : xc(ctx), number(n), data(NULL) 66 { assert(number >= 0); data = new Data;} 67 AlphaArguments(const AlphaArguments &args) 68 : xc(args.xc), number(args.number), data(args.data) {} 69 ~AlphaArguments() {} 70 71 ExecContext *getExecContext() const { return xc; } 72 73 const AlphaArguments &operator=(const AlphaArguments &args) { 74 xc = args.xc; 75 number = args.number; 76 data = args.data; 77 return *this; 78 } 79 80 AlphaArguments &operator++() { 81 ++number; 82 assert(number >= 0); 83 return *this; 84 } 85 86 AlphaArguments operator++(int) { 87 AlphaArguments args = *this; 88 ++number; 89 assert(number >= 0); 90 return args; 91 } 92 93 AlphaArguments &operator--() { 94 --number; 95 assert(number >= 0); 96 return *this; 97 } 98 99 AlphaArguments operator--(int) { 100 AlphaArguments args = *this; 101 --number; 102 assert(number >= 0); 103 return args; 104 } 105 106 const AlphaArguments &operator+=(int index) { 107 number += index; 108 assert(number >= 0); 109 return *this; 110 } 111 112 const AlphaArguments &operator-=(int index) { 113 number -= index; 114 assert(number >= 0); 115 return *this; 116 } 117 118 AlphaArguments operator[](int index) { 119 return AlphaArguments(xc, index); 120 } 121 122 template <class T> 123 operator T() { 124 assert(sizeof(T) <= sizeof(uint64_t)); 125 T data = static_cast<T>(getArg()); 126 return data; 127 } 128 129 template <class T> 130 operator T *() { 131 T *buf = (T *)data->alloc(sizeof(T)); 132 Kernel::CopyData(xc, buf, getArg(), sizeof(T)); 133 return buf; 134 } 135 136 operator char *() { 137 char *buf = data->alloc(2048); 138 Kernel::CopyString(xc, buf, getArg(), 2048); 139 return buf; 140 } 141}; 142 143#endif // __ARGUMENTS_HH__ 144