basic.isa revision 12234:78ece221f9f5
1// -*- mode:c++ -*- 2 3// Copyright (c) 2011 ARM Limited 4// All rights reserved 5// 6// The license below extends only to copyright in the software and shall 7// not be construed as granting a license to any other intellectual 8// property including but not limited to intellectual property relating 9// to a hardware implementation of the functionality of the software 10// licensed hereunder. You may use the software subject to the license 11// terms below provided that you ensure that this notice is replicated 12// unmodified and in its entirety in all distributions of the software, 13// modified or unmodified, in source code or in binary form. 14// 15// Copyright (c) 2007-2008 The Florida State University 16// All rights reserved. 17// 18// Redistribution and use in source and binary forms, with or without 19// modification, are permitted provided that the following conditions are 20// met: redistributions of source code must retain the above copyright 21// notice, this list of conditions and the following disclaimer; 22// redistributions in binary form must reproduce the above copyright 23// notice, this list of conditions and the following disclaimer in the 24// documentation and/or other materials provided with the distribution; 25// neither the name of the copyright holders nor the names of its 26// contributors may be used to endorse or promote products derived from 27// this software without specific prior written permission. 28// 29// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 30// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 31// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 32// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 33// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 34// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 35// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 36// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 37// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 38// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 39// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 40// 41// Authors: Stephen Hines 42 43// Declarations for execute() methods. 44def template BasicExecDeclare {{ 45 Fault execute(ExecContext *, Trace::InstRecord *) const; 46}}; 47 48// Basic instruction class declaration template. 49def template BasicDeclare {{ 50 /** 51 * Static instruction class for "%(mnemonic)s". 52 */ 53 class %(class_name)s : public %(base_class)s 54 { 55 public: 56 /// Constructor. 57 %(class_name)s(ExtMachInst machInst); 58 %(BasicExecDeclare)s 59 }; 60}}; 61 62// Basic instruction class constructor template. 63def template BasicConstructor {{ 64 %(class_name)s::%(class_name)s(ExtMachInst machInst) : %(base_class)s("%(mnemonic)s", machInst, %(op_class)s) 65 { 66 %(constructor)s; 67 if (!(condCode == COND_AL || condCode == COND_UC)) { 68 for (int x = 0; x < _numDestRegs; x++) { 69 _srcRegIdx[_numSrcRegs++] = _destRegIdx[x]; 70 } 71 } 72 } 73}}; 74 75def template BasicConstructor64 {{ 76 %(class_name)s::%(class_name)s(ExtMachInst machInst) : %(base_class)s("%(mnemonic)s", machInst, %(op_class)s) 77 { 78 %(constructor)s; 79 } 80}}; 81 82 83// Basic instruction class execute method template. 84def template BasicExecute {{ 85 Fault %(class_name)s::execute( 86 ExecContext *xc, Trace::InstRecord *traceData) const 87 { 88 Fault fault = NoFault; 89 90 %(op_decl)s; 91 %(op_rd)s; 92 %(code)s; 93 94 if (fault == NoFault) 95 { 96 %(op_wb)s; 97 } 98 return fault; 99 } 100}}; 101 102// Basic decode template. 103def template BasicDecode {{ 104 return new %(class_name)s(machInst); 105}}; 106 107// Basic decode template, passing mnemonic in as string arg to constructor. 108def template BasicDecodeWithMnemonic {{ 109 return new %(class_name)s("%(mnemonic)s", machInst); 110}}; 111 112// Definitions of execute methods that panic. 113def template BasicExecPanic {{ 114Fault execute(ExecContext *, Trace::InstRecord *) const 115{ 116 panic("Execute method called when it shouldn't!"); 117 // GCC < 4.3 fail to recognize the above panic as no return 118 return NoFault; 119} 120}}; 121