basic.isa revision 12234:78ece221f9f5
1// -*- mode:c++ -*- 2 3// Copyright (c) 2015 RISC-V Foundation 4// Copyright (c) 2016 The University of Virginia 5// All rights reserved. 6// 7// Redistribution and use in source and binary forms, with or without 8// modification, are permitted provided that the following conditions are 9// met: redistributions of source code must retain the above copyright 10// notice, this list of conditions and the following disclaimer; 11// redistributions in binary form must reproduce the above copyright 12// notice, this list of conditions and the following disclaimer in the 13// documentation and/or other materials provided with the distribution; 14// neither the name of the copyright holders nor the names of its 15// contributors may be used to endorse or promote products derived from 16// this software without specific prior written permission. 17// 18// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29// 30// Authors: Maxwell Walter 31// Alec Roelke 32 33// Declarations for execute() methods. 34def template BasicExecDeclare {{ 35 Fault execute(ExecContext *, Trace::InstRecord *) const; 36}}; 37 38// Basic instruction class declaration template. 39def template BasicDeclare {{ 40 // 41 // Static instruction class for "%(mnemonic)s". 42 // 43 class %(class_name)s : public %(base_class)s 44 { 45 public: 46 /// Constructor. 47 %(class_name)s(MachInst machInst); 48 %(BasicExecDeclare)s 49 using %(base_class)s::generateDisassembly; 50 }; 51}}; 52 53// Basic instruction class constructor template. 54def template BasicConstructor {{ 55 %(class_name)s::%(class_name)s(MachInst machInst) 56 : %(base_class)s("%(mnemonic)s", machInst, %(op_class)s) 57 { 58 %(constructor)s; 59 } 60}}; 61 62 63// Basic instruction class execute method template. 64def template BasicExecute {{ 65 Fault 66 %(class_name)s::execute(ExecContext *xc, 67 Trace::InstRecord *traceData) const 68 { 69 Fault fault = NoFault; 70 71 %(op_decl)s; 72 %(op_rd)s; 73 if (fault == NoFault) { 74 %(code)s; 75 if (fault == NoFault) { 76 %(op_wb)s; 77 } 78 } 79 return fault; 80 } 81}}; 82 83// Basic decode template. 84def template BasicDecode {{ 85 return new %(class_name)s(machInst); 86}}; 87 88// The most basic instruction format... 89def format BasicOp(code, *flags) {{ 90 iop = InstObjParams(name, Name, 'RiscvStaticInst', 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