basic.isa revision 8737
1// -*- mode:c++ -*- 2 3// Copyright (c) 2007-2008 The Florida State University 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: Stephen Hines 30 31// Declarations for execute() methods. 32def template BasicExecDeclare {{ 33 Fault execute(%(CPU_exec_context)s *, Trace::InstRecord *) const; 34}}; 35 36// Basic instruction class declaration template. 37def template BasicDeclare {{ 38 /** 39 * Static instruction class for "%(mnemonic)s". 40 */ 41 class %(class_name)s : public %(base_class)s 42 { 43 public: 44 /// Constructor. 45 %(class_name)s(ExtMachInst machInst); 46 %(BasicExecDeclare)s 47 }; 48}}; 49 50// Basic instruction class constructor template. 51def template BasicConstructor {{ 52 %(class_name)s::%(class_name)s(ExtMachInst machInst) : %(base_class)s("%(mnemonic)s", machInst, %(op_class)s) 53 { 54 %(constructor)s; 55 if (!(condCode == COND_AL || condCode == COND_UC)) { 56 for (int x = 0; x < _numDestRegs; x++) { 57 _srcRegIdx[_numSrcRegs++] = _destRegIdx[x]; 58 } 59 } 60 } 61}}; 62 63 64// Basic instruction class execute method template. 65def template BasicExecute {{ 66 Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, Trace::InstRecord *traceData) const 67 { 68 Fault fault = NoFault; 69 70 %(op_decl)s; 71 %(op_rd)s; 72 %(code)s; 73 74 if (fault == NoFault) 75 { 76 %(op_wb)s; 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// Definitions of execute methods that panic. 93def template BasicExecPanic {{ 94Fault execute(%(CPU_exec_context)s *, Trace::InstRecord *) const 95{ 96 panic("Execute method called when it shouldn't!"); 97 // GCC < 4.3 fail to recognize the above panic as no return 98 return NoFault; 99} 100}}; 101