utility.hh revision 2972
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 * Steve Reinhardt 30 */ 31 32#ifndef __ARCH_ALPHA_UTILITY_HH__ 33#define __ARCH_ALPHA_UTILITY_HH__ 34 35#include "config/full_system.hh" 36#include "arch/alpha/types.hh" 37#include "arch/alpha/isa_traits.hh" 38#include "arch/alpha/regfile.hh" 39#include "base/misc.hh" 40 41namespace AlphaISA 42{ 43 44 static inline ExtMachInst 45 makeExtMI(MachInst inst, const uint64_t &pc) { 46#if FULL_SYSTEM 47 ExtMachInst ext_inst = inst; 48 if (pc && 0x1) 49 return ext_inst|=(static_cast<ExtMachInst>(pc & 0x1) << 32); 50 else 51 return ext_inst; 52#else 53 return ExtMachInst(inst); 54#endif 55 } 56 57 inline bool isCallerSaveIntegerRegister(unsigned int reg) { 58 panic("register classification not implemented"); 59 return (reg >= 1 && reg <= 8 || reg >= 22 && reg <= 25 || reg == 27); 60 } 61 62 inline bool isCalleeSaveIntegerRegister(unsigned int reg) { 63 panic("register classification not implemented"); 64 return (reg >= 9 && reg <= 15); 65 } 66 67 inline bool isCallerSaveFloatRegister(unsigned int reg) { 68 panic("register classification not implemented"); 69 return false; 70 } 71 72 inline bool isCalleeSaveFloatRegister(unsigned int reg) { 73 panic("register classification not implemented"); 74 return false; 75 } 76 77 inline Addr alignAddress(const Addr &addr, 78 unsigned int nbytes) { 79 return (addr & ~(nbytes - 1)); 80 } 81 82 // Instruction address compression hooks 83 inline Addr realPCToFetchPC(const Addr &addr) { 84 return addr; 85 } 86 87 inline Addr fetchPCToRealPC(const Addr &addr) { 88 return addr; 89 } 90 91 // the size of "fetched" instructions (not necessarily the size 92 // of real instructions for PISA) 93 inline size_t fetchInstSize() { 94 return sizeof(MachInst); 95 } 96 97 inline MachInst makeRegisterCopy(int dest, int src) { 98 panic("makeRegisterCopy not implemented"); 99 return 0; 100 } 101 102 // Machine operations 103 104 void saveMachineReg(AnyReg &savereg, const RegFile ®_file, 105 int regnum); 106 107 void restoreMachineReg(RegFile ®s, const AnyReg ®, 108 int regnum); 109 110 /** 111 * Function to insure ISA semantics about 0 registers. 112 * @param tc The thread context. 113 */ 114 template <class TC> 115 void zeroRegisters(TC *tc); 116 117#if FULL_SYSTEM 118 // Alpha IPR register accessors 119 inline bool PcPAL(Addr addr) { return addr & 0x1; } 120 121 //////////////////////////////////////////////////////////////////////// 122 // 123 // Translation stuff 124 // 125 126 inline Addr PteAddr(Addr a) { return (a & PteMask) << PteShift; } 127 128 // User Virtual 129 inline bool IsUSeg(Addr a) { return USegBase <= a && a <= USegEnd; } 130 131 // Kernel Direct Mapped 132 inline bool IsK0Seg(Addr a) { return K0SegBase <= a && a <= K0SegEnd; } 133 inline Addr K0Seg2Phys(Addr addr) { return addr & ~K0SegBase; } 134 135 // Kernel Virtual 136 inline bool IsK1Seg(Addr a) { return K1SegBase <= a && a <= K1SegEnd; } 137 138 inline Addr 139 TruncPage(Addr addr) 140 { return addr & ~(PageBytes - 1); } 141 142 inline Addr 143 RoundPage(Addr addr) 144 { return (addr + PageBytes - 1) & ~(PageBytes - 1); } 145 146 void initCPU(ThreadContext *tc, int cpuId); 147 void initIPRs(ThreadContext *tc, int cpuId); 148 149 /** 150 * Function to check for and process any interrupts. 151 * @param tc The thread context. 152 */ 153 template <class TC> 154 void processInterrupts(TC *tc); 155#endif 156 157} // namespace AlphaISA 158 159#endif 160