basic.isa revision 12236:126ac9da6050
1// -*- mode:c++ -*- 2 3// -*- mode:c++ -*- 4 5// Copyright (c) 2003-2005 The Regents of The University of Michigan 6// All rights reserved. 7// 8// Redistribution and use in source and binary forms, with or without 9// modification, are permitted provided that the following conditions are 10// met: redistributions of source code must retain the above copyright 11// notice, this list of conditions and the following disclaimer; 12// redistributions in binary form must reproduce the above copyright 13// notice, this list of conditions and the following disclaimer in the 14// documentation and/or other materials provided with the distribution; 15// neither the name of the copyright holders nor the names of its 16// contributors may be used to endorse or promote products derived from 17// this software without specific prior written permission. 18// 19// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30// 31// Authors: Steve Reinhardt 32// Korey Sewell 33 34// Basic instruction class declaration template. 35def template BasicDeclare {{ 36 /** 37 * Static instruction class for "%(mnemonic)s". 38 */ 39 class %(class_name)s : public %(base_class)s 40 { 41 public: 42 /// Constructor. 43 %(class_name)s(MachInst machInst); 44 Fault execute(ExecContext *, Trace::InstRecord *) const; 45 }; 46}}; 47 48// Basic instruction class constructor template. 49def template BasicConstructor {{ 50 %(class_name)s::%(class_name)s(MachInst machInst) : %(base_class)s("%(mnemonic)s", machInst, %(op_class)s) 51 { 52 %(constructor)s; 53 } 54}}; 55 56 57// Basic instruction class execute method template. 58def template BasicExecute {{ 59 Fault %(class_name)s::execute( 60 ExecContext *xc, Trace::InstRecord *traceData) const 61 { 62 Fault fault = NoFault; 63 64 %(fp_enable_check)s; 65 %(op_decl)s; 66 %(op_rd)s; 67 if(fault == NoFault) 68 { 69 %(code)s; 70 if(fault == NoFault){ 71 %(op_wb)s; 72 } 73 } 74 return fault; 75 } 76}}; 77 78// Basic decode template. 79def template BasicDecode {{ 80 return new %(class_name)s(machInst); 81}}; 82 83// Basic decode template, passing mnemonic in as string arg to constructor. 84def template BasicDecodeWithMnemonic {{ 85 return new %(class_name)s("%(mnemonic)s", machInst); 86}}; 87 88// The most basic instruction format... 89def format BasicOp(code, *flags) {{ 90 iop = InstObjParams(name, Name, 'MipsStaticInst', code, flags) 91 header_output = BasicDeclare.subst(iop) 92 decoder_output = BasicConstructor.subst(iop) 93 decode_block = BasicDecode.subst(iop) 94 exec_output = BasicExecute.subst(iop) 95}}; 96