trap.isa revision 2754
12686Sksewell@umich.edu// -*- mode:c++ -*- 22686Sksewell@umich.edu 32754Sksewell@umich.edu// Copyright (c) 2006 The Regents of The University of Michigan 42706Sksewell@umich.edu// All rights reserved. 52706Sksewell@umich.edu// 62706Sksewell@umich.edu// Redistribution and use in source and binary forms, with or without 72706Sksewell@umich.edu// modification, are permitted provided that the following conditions are 82706Sksewell@umich.edu// met: redistributions of source code must retain the above copyright 92706Sksewell@umich.edu// notice, this list of conditions and the following disclaimer; 102706Sksewell@umich.edu// redistributions in binary form must reproduce the above copyright 112706Sksewell@umich.edu// notice, this list of conditions and the following disclaimer in the 122706Sksewell@umich.edu// documentation and/or other materials provided with the distribution; 132706Sksewell@umich.edu// neither the name of the copyright holders nor the names of its 142706Sksewell@umich.edu// contributors may be used to endorse or promote products derived from 152706Sksewell@umich.edu// this software without specific prior written permission. 162706Sksewell@umich.edu// 172706Sksewell@umich.edu// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 182706Sksewell@umich.edu// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 192706Sksewell@umich.edu// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 202706Sksewell@umich.edu// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 212706Sksewell@umich.edu// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 222706Sksewell@umich.edu// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 232706Sksewell@umich.edu// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 242706Sksewell@umich.edu// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 252706Sksewell@umich.edu// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 262706Sksewell@umich.edu// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 272706Sksewell@umich.edu// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 282706Sksewell@umich.edu// 292706Sksewell@umich.edu// Authors: Korey Sewell 302706Sksewell@umich.edu 312022SN/A//////////////////////////////////////////////////////////////////// 322022SN/A// 332022SN/A// Trap instructions 342022SN/A// 352022SN/A 362022SN/Aoutput header {{ 372022SN/A /** 382022SN/A * Base class for integer operations. 392022SN/A */ 402028SN/A class Trap : public MipsStaticInst 412022SN/A { 422022SN/A protected: 432022SN/A 442022SN/A /// Constructor 452028SN/A Trap(const char *mnem, MachInst _machInst, OpClass __opClass) : MipsStaticInst(mnem, _machInst, __opClass) 462022SN/A { 472022SN/A } 482022SN/A 492022SN/A std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const; 502022SN/A }; 512022SN/A}}; 522022SN/A 532022SN/Aoutput decoder {{ 542022SN/A std::string Trap::generateDisassembly(Addr pc, const SymbolTable *symtab) const 552022SN/A { 562686Sksewell@umich.edu return "Disassembly of trap instruction\n"; 572022SN/A } 582022SN/A}}; 592022SN/A 602022SN/Adef template TrapExecute {{ 612686Sksewell@umich.edu //Edit This Template When Traps Are Implemented 622022SN/A Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, Trace::InstRecord *traceData) const 632022SN/A { 642022SN/A //Write the resulting state to the execution context 652022SN/A %(op_wb)s; 662022SN/A 672686Sksewell@umich.edu //Call into the trap handler with the appropriate fault 682022SN/A return No_Fault; 692022SN/A } 702022SN/A}}; 712022SN/A 722239SN/Adef format Trap(code, *flags) {{ 732751Sksewell@umich.edu code = 'warn(\"' 742751Sksewell@umich.edu code += 'Trap Exception Handler Is Currently Not Implemented.' 752751Sksewell@umich.edu code += '\");' 762239SN/A iop = InstObjParams(name, Name, 'MipsStaticInst', CodeBlock(code), flags) 772022SN/A header_output = BasicDeclare.subst(iop) 782022SN/A decoder_output = BasicConstructor.subst(iop) 792239SN/A decode_block = BasicDecode.subst(iop) 802239SN/A exec_output = BasicExecute.subst(iop) 812022SN/A}}; 82