base.isa revision 2706:d88c27f75121
1// -*- mode:c++ -*- 2 3// Copyright (c) 2003-2006 The Regents of The University of Michigan 4// All rights reserved. 5// 6// Redistribution and use in source and binary forms, with or without 7// modification, are permitted provided that the following conditions are 8// met: redistributions of source code must retain the above copyright 9// notice, this list of conditions and the following disclaimer; 10// redistributions in binary form must reproduce the above copyright 11// notice, this list of conditions and the following disclaimer in the 12// documentation and/or other materials provided with the distribution; 13// neither the name of the copyright holders nor the names of its 14// contributors may be used to endorse or promote products derived from 15// this software without specific prior written permission. 16// 17// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28// 29// Authors: Korey Sewell 30 31//////////////////////////////////////////////////////////////////// 32// 33// Base class for MIPS instructions, and some support functions 34// 35 36//Outputs to decoder.hh 37output header {{ 38 39 using namespace MipsISA; 40 41 42 /** 43 * Base class for all MIPS static instructions. 44 */ 45 class MipsStaticInst : public StaticInst 46 { 47 protected: 48 49 // Constructor 50 MipsStaticInst(const char *mnem, MachInst _machInst, OpClass __opClass) 51 : StaticInst(mnem, _machInst, __opClass) 52 { 53 } 54 55 /// Print a register name for disassembly given the unique 56 /// dependence tag number (FP or int). 57 void printReg(std::ostream &os, int reg) const; 58 59 std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const; 60 }; 61 62}}; 63 64//Ouputs to decoder.cc 65output decoder {{ 66 67 void MipsStaticInst::printReg(std::ostream &os, int reg) const 68 { 69 if (reg < FP_Base_DepTag) { 70 ccprintf(os, "r%d", reg); 71 } 72 else { 73 ccprintf(os, "f%d", reg - FP_Base_DepTag); 74 } 75 } 76 77 std::string MipsStaticInst::generateDisassembly(Addr pc, const SymbolTable *symtab) const 78 { 79 std::stringstream ss; 80 81 ccprintf(ss, "%-10s ", mnemonic); 82 83 if(_numDestRegs > 0){ 84 printReg(ss, _destRegIdx[0]); 85 } 86 87 if(_numSrcRegs > 0) { 88 ss << ", "; 89 printReg(ss, _srcRegIdx[0]); 90 } 91 92 if(_numSrcRegs > 1) { 93 ss << ", "; 94 printReg(ss, _srcRegIdx[1]); 95 } 96 97 98 if(mnemonic == "sll" || mnemonic == "sra"){ 99 ccprintf(ss,", %d",SA); 100 } 101 102 return ss.str(); 103 } 104 105}}; 106 107