utility.hh revision 3272:c28038eaefb8
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: Gabe Black 29 */ 30 31#ifndef __ARCH_SPARC_UTILITY_HH__ 32#define __ARCH_SPARC_UTILITY_HH__ 33 34#include "arch/sparc/isa_traits.hh" 35#include "base/misc.hh" 36#include "cpu/thread_context.hh" 37 38namespace SparcISA 39{ 40 inline ExtMachInst 41 makeExtMI(MachInst inst, ThreadContext * xc) { 42 ExtMachInst emi = (unsigned MachInst) inst; 43 //The I bit, bit 13, is used to figure out where the ASI 44 //should come from. Use that in the ExtMachInst. This is 45 //slightly redundant, but it removes the need to put a condition 46 //into all the execute functions 47 if(inst & (1 << 13)) 48 emi |= (static_cast<ExtMachInst>(xc->readMiscReg(MISCREG_ASI)) 49 << (sizeof(MachInst) * 8)); 50 return emi; 51 } 52 53 inline bool isCallerSaveIntegerRegister(unsigned int reg) { 54 panic("register classification not implemented"); 55 return false; 56 } 57 58 inline bool isCalleeSaveIntegerRegister(unsigned int reg) { 59 panic("register classification not implemented"); 60 return false; 61 } 62 63 inline bool isCallerSaveFloatRegister(unsigned int reg) { 64 panic("register classification not implemented"); 65 return false; 66 } 67 68 inline bool isCalleeSaveFloatRegister(unsigned int reg) { 69 panic("register classification not implemented"); 70 return false; 71 } 72 73 // Instruction address compression hooks 74 inline Addr realPCToFetchPC(const Addr &addr) 75 { 76 return addr; 77 } 78 79 inline Addr fetchPCToRealPC(const Addr &addr) 80 { 81 return addr; 82 } 83 84 // the size of "fetched" instructions (not necessarily the size 85 // of real instructions for PISA) 86 inline size_t fetchInstSize() 87 { 88 return sizeof(MachInst); 89 } 90 91 /** 92 * Function to insure ISA semantics about 0 registers. 93 * @param tc The thread context. 94 */ 95 template <class TC> 96 void zeroRegisters(TC *tc); 97 98} // namespace SparcISA 99 100#endif 101