basic.isa revision 5268:5bfc53fe60e7
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// Declarations for execute() methods. 35def template BasicExecDeclare {{ 36 Fault execute(%(CPU_exec_context)s *, Trace::InstRecord *) const; 37}}; 38 39// Basic instruction class declaration template. 40def template BasicDeclare {{ 41 /** 42 * Static instruction class for "%(mnemonic)s". 43 */ 44 class %(class_name)s : public %(base_class)s 45 { 46 public: 47 /// Constructor. 48 %(class_name)s(MachInst machInst); 49 %(BasicExecDeclare)s 50 }; 51}}; 52 53// Basic instruction class constructor template. 54def template BasicConstructor {{ 55 inline %(class_name)s::%(class_name)s(MachInst machInst) : %(base_class)s("%(mnemonic)s", machInst, %(op_class)s) 56 { 57 %(constructor)s; 58 } 59}}; 60 61 62// Basic instruction class execute method template. 63def template BasicExecute {{ 64 Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, Trace::InstRecord *traceData) const 65 { 66 Fault fault = NoFault; 67 68 %(fp_enable_check)s; 69 %(op_decl)s; 70 %(op_rd)s; 71 if(fault == NoFault) 72 { 73 %(code)s; 74 if(fault == NoFault){ 75 %(op_wb)s; 76 } 77 } 78 return fault; 79 } 80}}; 81 82// Basic decode template. 83def template BasicDecode {{ 84 return new %(class_name)s(machInst); 85}}; 86 87// Basic decode template, passing mnemonic in as string arg to constructor. 88def template BasicDecodeWithMnemonic {{ 89 return new %(class_name)s("%(mnemonic)s", machInst); 90}}; 91 92// The most basic instruction format... 93def format BasicOp(code, *flags) {{ 94 iop = InstObjParams(name, Name, 'MipsStaticInst', code, flags) 95 header_output = BasicDeclare.subst(iop) 96 decoder_output = BasicConstructor.subst(iop) 97 decode_block = BasicDecode.subst(iop) 98 exec_output = BasicExecute.subst(iop) 99}}; 100