types.hh revision 7720
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/** 32 * @file 33 * Defines global host-dependent types: 34 * Counter, Tick, and (indirectly) {int,uint}{8,16,32,64}_t. 35 */ 36 37#ifndef __BASE_TYPES_HH__ 38#define __BASE_TYPES_HH__ 39 40#include <inttypes.h> 41 42/** uint64_t constant */ 43#define ULL(N) ((uint64_t)N##ULL) 44/** int64_t constant */ 45#define LL(N) ((int64_t)N##LL) 46 47/** Statistics counter type. Not much excuse for not using a 64-bit 48 * integer here, but if you're desperate and only run short 49 * simulations you could make this 32 bits. 50 */ 51typedef int64_t Counter; 52 53/** 54 * Clock cycle count type. 55 * @note using an unsigned breaks the cache. 56 */ 57typedef int64_t Tick; 58typedef uint64_t UTick; 59 60const Tick MaxTick = LL(0x7fffffffffffffff); 61 62/** 63 * Address type 64 * This will probably be moved somewhere else in the near future. 65 * This should be at least as big as the biggest address width in use 66 * in the system, which will probably be 64 bits. 67 */ 68typedef uint64_t Addr; 69 70typedef uint16_t MicroPC; 71 72static const MicroPC MicroPCRomBit = 1 << (sizeof(MicroPC) * 8 - 1); 73 74static inline MicroPC 75romMicroPC(MicroPC upc) 76{ 77 return upc | MicroPCRomBit; 78} 79 80static inline MicroPC 81normalMicroPC(MicroPC upc) 82{ 83 return upc & ~MicroPCRomBit; 84} 85 86static inline bool 87isRomMicroPC(MicroPC upc) 88{ 89 return MicroPCRomBit & upc; 90} 91 92const Addr MaxAddr = (Addr)-1; 93 94/** 95 * Thread index/ID type 96 */ 97typedef int16_t ThreadID; 98const ThreadID InvalidThreadID = (ThreadID)-1; 99 100class FaultBase; 101template <class T> class RefCountingPtr; 102typedef RefCountingPtr<FaultBase> Fault; 103 104#endif // __BASE_TYPES_HH__ 105