unimp.hh revision 12291:2c0d8c31fc3d
12391SN/A/* 22391SN/A * Copyright (c) 2003-2005 The Regents of The University of Michigan 32391SN/A * All rights reserved. 42391SN/A * 52391SN/A * Redistribution and use in source and binary forms, with or without 62391SN/A * modification, are permitted provided that the following conditions are 72391SN/A * met: redistributions of source code must retain the above copyright 82391SN/A * notice, this list of conditions and the following disclaimer; 92391SN/A * redistributions in binary form must reproduce the above copyright 102391SN/A * notice, this list of conditions and the following disclaimer in the 112391SN/A * documentation and/or other materials provided with the distribution; 122391SN/A * neither the name of the copyright holders nor the names of its 132391SN/A * contributors may be used to endorse or promote products derived from 142391SN/A * this software without specific prior written permission. 152391SN/A * 162391SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 172391SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 182391SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 192391SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 202391SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 212391SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 222391SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 232391SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 242391SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 252391SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 262391SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272665Ssaidi@eecs.umich.edu * 282665Ssaidi@eecs.umich.edu * Authors: Steve Reinhardt 292391SN/A */ 302391SN/A 312391SN/A#ifndef __ARCH_SPARC_INSTS_UNIMP_HH__ 322391SN/A#define __ARCH_SPARC_INSTS_UNIMP_HH__ 332391SN/A 342391SN/A#include "arch/sparc/insts/static_inst.hh" 352391SN/A#include "base/cprintf.hh" 362391SN/A 372391SN/Anamespace SparcISA 382462SN/A{ 392414SN/A 402914Ssaidi@eecs.umich.edu//////////////////////////////////////////////////////////////////// 412415SN/A// 422416SN/A// Unimplemented instructions 432416SN/A// 442462SN/A 452391SN/A/** 462391SN/A * Static instruction class for unimplemented instructions that 472391SN/A * cause simulator termination. Note that these are recognized 482462SN/A * (legal) instructions that the simulator does not support; the 492391SN/A * 'Unknown' class is used for unrecognized/illegal instructions. 502914Ssaidi@eecs.umich.edu * This is a leaf class. 512413SN/A */ 522413SN/Aclass FailUnimplemented : public SparcStaticInst 532413SN/A{ 542413SN/A public: 552413SN/A /// Constructor 562640Sstever@eecs.umich.edu FailUnimplemented(const char *_mnemonic, ExtMachInst _machInst) : 572413SN/A SparcStaticInst(_mnemonic, _machInst, No_OpClass) 582413SN/A { 592413SN/A // don't call execute() (which panics) if we're on a 603349Sbinkertn@umich.edu // speculative path 612413SN/A flags[IsNonSpeculative] = true; 623349Sbinkertn@umich.edu } 632413SN/A 642413SN/A Fault 652413SN/A execute(ExecContext *xc, Trace::InstRecord *traceData) const override 662521SN/A { 672521SN/A panic("attempt to execute unimplemented instruction '%s' " 682413SN/A "(inst 0x%08x)", mnemonic, machInst); 692413SN/A } 702413SN/A 712413SN/A std::string 722416SN/A generateDisassembly(Addr pc, const SymbolTable *symtab) const override 732416SN/A { 742413SN/A return csprintf("%-10s (unimplemented)", mnemonic); 752391SN/A } 762391SN/A}; 772391SN/A 782391SN/A/** 792391SN/A * Base class for unimplemented instructions that cause a warning 802391SN/A * to be printed (but do not terminate simulation). This 813170Sstever@eecs.umich.edu * implementation is a little screwy in that it will print a 823170Sstever@eecs.umich.edu * warning for each instance of a particular unimplemented machine 833170Sstever@eecs.umich.edu * instruction, not just for each unimplemented opcode. Should 843170Sstever@eecs.umich.edu * probably make the 'warned' flag a static member of the derived 853170Sstever@eecs.umich.edu * class. 863170Sstever@eecs.umich.edu */ 873170Sstever@eecs.umich.educlass WarnUnimplemented : public SparcStaticInst 883170Sstever@eecs.umich.edu{ 893170Sstever@eecs.umich.edu private: 903170Sstever@eecs.umich.edu /// Have we warned on this instruction yet? 913170Sstever@eecs.umich.edu mutable bool warned; 923170Sstever@eecs.umich.edu 933170Sstever@eecs.umich.edu public: 943170Sstever@eecs.umich.edu /// Constructor 953170Sstever@eecs.umich.edu WarnUnimplemented(const char *_mnemonic, ExtMachInst _machInst) : 963170Sstever@eecs.umich.edu SparcStaticInst(_mnemonic, _machInst, No_OpClass), warned(false) 973170Sstever@eecs.umich.edu { 983170Sstever@eecs.umich.edu // don't call execute() (which panics) if we're on a 993170Sstever@eecs.umich.edu // speculative path 1003170Sstever@eecs.umich.edu flags[IsNonSpeculative] = true; 1013170Sstever@eecs.umich.edu } 1023170Sstever@eecs.umich.edu 1033170Sstever@eecs.umich.edu Fault 1043170Sstever@eecs.umich.edu execute(ExecContext *xc, Trace::InstRecord *traceData) const override 1053170Sstever@eecs.umich.edu { 1063170Sstever@eecs.umich.edu if (!warned) { 1073170Sstever@eecs.umich.edu warn("instruction '%s' unimplemented\n", mnemonic); 1083170Sstever@eecs.umich.edu warned = true; 1093170Sstever@eecs.umich.edu } 1103170Sstever@eecs.umich.edu return NoFault; 1113170Sstever@eecs.umich.edu } 1123170Sstever@eecs.umich.edu 1133170Sstever@eecs.umich.edu std::string 1143170Sstever@eecs.umich.edu generateDisassembly(Addr pc, const SymbolTable *symtab) const override 1153170Sstever@eecs.umich.edu { 1163170Sstever@eecs.umich.edu return csprintf("%-10s (unimplemented)", mnemonic); 1173170Sstever@eecs.umich.edu } 1183170Sstever@eecs.umich.edu}; 1193170Sstever@eecs.umich.edu 1203170Sstever@eecs.umich.edu} 1213170Sstever@eecs.umich.edu 1223170Sstever@eecs.umich.edu#endif // __ARCH_SPARC_INSTS_UNIMP_HH__ 1233170Sstever@eecs.umich.edu