trap.isa revision 2632
12632Sstever@eecs.umich.edu// Copyright (c) 2006 The Regents of The University of Michigan 22632Sstever@eecs.umich.edu// All rights reserved. 32632Sstever@eecs.umich.edu// 42632Sstever@eecs.umich.edu// Redistribution and use in source and binary forms, with or without 52632Sstever@eecs.umich.edu// modification, are permitted provided that the following conditions are 62632Sstever@eecs.umich.edu// met: redistributions of source code must retain the above copyright 72632Sstever@eecs.umich.edu// notice, this list of conditions and the following disclaimer; 82632Sstever@eecs.umich.edu// redistributions in binary form must reproduce the above copyright 92632Sstever@eecs.umich.edu// notice, this list of conditions and the following disclaimer in the 102632Sstever@eecs.umich.edu// documentation and/or other materials provided with the distribution; 112632Sstever@eecs.umich.edu// neither the name of the copyright holders nor the names of its 122632Sstever@eecs.umich.edu// contributors may be used to endorse or promote products derived from 132632Sstever@eecs.umich.edu// this software without specific prior written permission. 142632Sstever@eecs.umich.edu// 152632Sstever@eecs.umich.edu// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 162632Sstever@eecs.umich.edu// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 172632Sstever@eecs.umich.edu// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 182632Sstever@eecs.umich.edu// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 192632Sstever@eecs.umich.edu// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 202632Sstever@eecs.umich.edu// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 212632Sstever@eecs.umich.edu// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 222632Sstever@eecs.umich.edu// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 232632Sstever@eecs.umich.edu// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 242632Sstever@eecs.umich.edu// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 252632Sstever@eecs.umich.edu// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 262632Sstever@eecs.umich.edu// 272632Sstever@eecs.umich.edu// Authors: Gabe Black 282632Sstever@eecs.umich.edu// Steve Reinhardt 292632Sstever@eecs.umich.edu 302022SN/A//////////////////////////////////////////////////////////////////// 312022SN/A// 322022SN/A// Trap instructions 332022SN/A// 342022SN/A 352022SN/Aoutput header {{ 362022SN/A /** 372469SN/A * Base class for trap instructions, 382469SN/A * or instructions that always fault. 392022SN/A */ 402022SN/A class Trap : public SparcStaticInst 412022SN/A { 422224SN/A protected: 432022SN/A 442224SN/A // Constructor 452469SN/A Trap(const char *mnem, ExtMachInst _machInst, OpClass __opClass) : 462561SN/A SparcStaticInst(mnem, _machInst, __opClass), trapNum(SW_TRAP) 472224SN/A { 482224SN/A } 492022SN/A 502224SN/A std::string generateDisassembly(Addr pc, 512224SN/A const SymbolTable *symtab) const; 522561SN/A 532561SN/A int trapNum; 542022SN/A }; 552022SN/A}}; 562022SN/A 572022SN/Aoutput decoder {{ 582224SN/A std::string Trap::generateDisassembly(Addr pc, 592224SN/A const SymbolTable *symtab) const 602022SN/A { 612561SN/A std::stringstream response; 622561SN/A 632561SN/A printMnemonic(response, mnemonic); 642561SN/A ccprintf(response, " "); 652561SN/A printReg(response, _srcRegIdx[0]); 662561SN/A ccprintf(response, ", 0x%x", trapNum); 672561SN/A ccprintf(response, ", or "); 682561SN/A printReg(response, _srcRegIdx[1]); 692561SN/A return response.str(); 702022SN/A } 712022SN/A}}; 722022SN/A 732022SN/Adef template TrapExecute {{ 742224SN/A Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, 752224SN/A Trace::InstRecord *traceData) const 762022SN/A { 772469SN/A Fault fault = NoFault; 782488SN/A %(op_decl)s; 792488SN/A %(op_rd)s; 802469SN/A %(code)s 812469SN/A return fault; 822022SN/A } 832022SN/A}}; 842022SN/A 852022SN/Adef format Trap(code, *opt_flags) {{ 862022SN/A orig_code = code 872022SN/A cblk = CodeBlock(code) 882516SN/A iop = InstObjParams(name, Name, 'Trap', cblk, opt_flags) 892022SN/A header_output = BasicDeclare.subst(iop) 902022SN/A decoder_output = BasicConstructor.subst(iop) 912469SN/A decode_block = BasicDecode.subst(iop) 922022SN/A exec_output = TrapExecute.subst(iop) 932022SN/A}}; 94