pred_inst.hh revision 7110
17110Sgblack@eecs.umich.edu/* 27110Sgblack@eecs.umich.edu * Copyright (c) 2010 ARM Limited 37110Sgblack@eecs.umich.edu * All rights reserved 47110Sgblack@eecs.umich.edu * 57110Sgblack@eecs.umich.edu * The license below extends only to copyright in the software and shall 67110Sgblack@eecs.umich.edu * not be construed as granting a license to any other intellectual 77110Sgblack@eecs.umich.edu * property including but not limited to intellectual property relating 87110Sgblack@eecs.umich.edu * to a hardware implementation of the functionality of the software 97110Sgblack@eecs.umich.edu * licensed hereunder. You may use the software subject to the license 107110Sgblack@eecs.umich.edu * terms below provided that you ensure that this notice is replicated 117110Sgblack@eecs.umich.edu * unmodified and in its entirety in all distributions of the software, 127110Sgblack@eecs.umich.edu * modified or unmodified, in source code or in binary form. 137110Sgblack@eecs.umich.edu * 147110Sgblack@eecs.umich.edu * Copyright (c) 2007-2008 The Florida State University 156253Sgblack@eecs.umich.edu * All rights reserved. 166253Sgblack@eecs.umich.edu * 176253Sgblack@eecs.umich.edu * Redistribution and use in source and binary forms, with or without 186253Sgblack@eecs.umich.edu * modification, are permitted provided that the following conditions are 196253Sgblack@eecs.umich.edu * met: redistributions of source code must retain the above copyright 206253Sgblack@eecs.umich.edu * notice, this list of conditions and the following disclaimer; 216253Sgblack@eecs.umich.edu * redistributions in binary form must reproduce the above copyright 226253Sgblack@eecs.umich.edu * notice, this list of conditions and the following disclaimer in the 236253Sgblack@eecs.umich.edu * documentation and/or other materials provided with the distribution; 246253Sgblack@eecs.umich.edu * neither the name of the copyright holders nor the names of its 256253Sgblack@eecs.umich.edu * contributors may be used to endorse or promote products derived from 266253Sgblack@eecs.umich.edu * this software without specific prior written permission. 276253Sgblack@eecs.umich.edu * 286253Sgblack@eecs.umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 296253Sgblack@eecs.umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 306253Sgblack@eecs.umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 316253Sgblack@eecs.umich.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 326253Sgblack@eecs.umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 336253Sgblack@eecs.umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 346253Sgblack@eecs.umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 356253Sgblack@eecs.umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 366253Sgblack@eecs.umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 376253Sgblack@eecs.umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 386253Sgblack@eecs.umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 396253Sgblack@eecs.umich.edu * 406253Sgblack@eecs.umich.edu * Authors: Stephen Hines 416253Sgblack@eecs.umich.edu */ 426253Sgblack@eecs.umich.edu#ifndef __ARCH_ARM_INSTS_PREDINST_HH__ 436253Sgblack@eecs.umich.edu#define __ARCH_ARM_INSTS_PREDINST_HH__ 446253Sgblack@eecs.umich.edu 456253Sgblack@eecs.umich.edu#include "arch/arm/insts/static_inst.hh" 466253Sgblack@eecs.umich.edu#include "base/trace.hh" 476253Sgblack@eecs.umich.edu 486253Sgblack@eecs.umich.edunamespace ArmISA 496253Sgblack@eecs.umich.edu{ 506253Sgblack@eecs.umich.edustatic inline uint32_t 516253Sgblack@eecs.umich.edurotate_imm(uint32_t immValue, int rotateValue) 526253Sgblack@eecs.umich.edu{ 536253Sgblack@eecs.umich.edu return ((immValue >> (rotateValue & 31)) | 546253Sgblack@eecs.umich.edu (immValue << (32 - (rotateValue & 31)))); 556253Sgblack@eecs.umich.edu} 566253Sgblack@eecs.umich.edu 576253Sgblack@eecs.umich.edu/** 586253Sgblack@eecs.umich.edu * Base class for predicated integer operations. 596253Sgblack@eecs.umich.edu */ 606253Sgblack@eecs.umich.educlass PredOp : public ArmStaticInst 616253Sgblack@eecs.umich.edu{ 626253Sgblack@eecs.umich.edu protected: 636253Sgblack@eecs.umich.edu 646253Sgblack@eecs.umich.edu ConditionCode condCode; 656253Sgblack@eecs.umich.edu 666253Sgblack@eecs.umich.edu /// Constructor 677099Sgblack@eecs.umich.edu PredOp(const char *mnem, ExtMachInst _machInst, OpClass __opClass) : 686253Sgblack@eecs.umich.edu ArmStaticInst(mnem, _machInst, __opClass), 696253Sgblack@eecs.umich.edu condCode((ConditionCode)(unsigned)machInst.condCode) 706253Sgblack@eecs.umich.edu { 716253Sgblack@eecs.umich.edu } 726253Sgblack@eecs.umich.edu}; 736253Sgblack@eecs.umich.edu 746253Sgblack@eecs.umich.edu/** 756253Sgblack@eecs.umich.edu * Base class for predicated immediate operations. 766253Sgblack@eecs.umich.edu */ 777110Sgblack@eecs.umich.educlass PredImmOpBase : public PredOp 786253Sgblack@eecs.umich.edu{ 796306Sgblack@eecs.umich.edu protected: 806253Sgblack@eecs.umich.edu 816306Sgblack@eecs.umich.edu uint32_t imm; 826306Sgblack@eecs.umich.edu uint32_t rotated_imm; 836306Sgblack@eecs.umich.edu uint32_t rotated_carry; 846253Sgblack@eecs.umich.edu 856306Sgblack@eecs.umich.edu /// Constructor 867110Sgblack@eecs.umich.edu PredImmOpBase(const char *mnem, ExtMachInst _machInst, OpClass __opClass) : 877110Sgblack@eecs.umich.edu PredOp(mnem, _machInst, __opClass), 887110Sgblack@eecs.umich.edu imm(machInst.imm), rotated_imm(0), rotated_carry(0) 897110Sgblack@eecs.umich.edu { 907110Sgblack@eecs.umich.edu } 917110Sgblack@eecs.umich.edu 927110Sgblack@eecs.umich.edu std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const; 937110Sgblack@eecs.umich.edu}; 947110Sgblack@eecs.umich.edu 957110Sgblack@eecs.umich.edu/** 967110Sgblack@eecs.umich.edu * Base class for regular predicated immediate operations. 977110Sgblack@eecs.umich.edu */ 987110Sgblack@eecs.umich.educlass PredImmOp : public PredImmOpBase 997110Sgblack@eecs.umich.edu{ 1007110Sgblack@eecs.umich.edu protected: 1017110Sgblack@eecs.umich.edu 1027110Sgblack@eecs.umich.edu uint32_t rotate; 1037110Sgblack@eecs.umich.edu 1047110Sgblack@eecs.umich.edu /// Constructor 1057099Sgblack@eecs.umich.edu PredImmOp(const char *mnem, ExtMachInst _machInst, OpClass __opClass) : 1067110Sgblack@eecs.umich.edu PredImmOpBase(mnem, _machInst, __opClass), 1077110Sgblack@eecs.umich.edu rotate(machInst.rotate << 1) 1086306Sgblack@eecs.umich.edu { 1096306Sgblack@eecs.umich.edu rotated_imm = rotate_imm(imm, rotate); 1106306Sgblack@eecs.umich.edu if (rotate != 0) 1117110Sgblack@eecs.umich.edu rotated_carry = bits(rotated_imm, 31); 1126306Sgblack@eecs.umich.edu } 1137110Sgblack@eecs.umich.edu}; 1146306Sgblack@eecs.umich.edu 1157110Sgblack@eecs.umich.edu/** 1167110Sgblack@eecs.umich.edu * Base class for modified predicated immediate operations. 1177110Sgblack@eecs.umich.edu */ 1187110Sgblack@eecs.umich.educlass PredModImmOp : public PredImmOpBase 1197110Sgblack@eecs.umich.edu{ 1207110Sgblack@eecs.umich.edu protected: 1217110Sgblack@eecs.umich.edu 1227110Sgblack@eecs.umich.edu uint8_t ctrlImm; 1237110Sgblack@eecs.umich.edu uint8_t dataImm; 1247110Sgblack@eecs.umich.edu 1257110Sgblack@eecs.umich.edu 1267110Sgblack@eecs.umich.edu /// Constructor 1277110Sgblack@eecs.umich.edu PredModImmOp(const char *mnem, ExtMachInst _machInst, OpClass __opClass) : 1287110Sgblack@eecs.umich.edu PredImmOpBase(mnem, _machInst, __opClass), 1297110Sgblack@eecs.umich.edu ctrlImm(bits(machInst.instBits, 26) << 3 | 1307110Sgblack@eecs.umich.edu bits(machInst.instBits, 14, 12)), 1317110Sgblack@eecs.umich.edu dataImm(bits(machInst.instBits, 7, 0)) 1327110Sgblack@eecs.umich.edu { 1337110Sgblack@eecs.umich.edu rotated_imm = modified_imm(ctrlImm, dataImm); 1347110Sgblack@eecs.umich.edu rotated_carry = bits(rotated_imm, 31); 1357110Sgblack@eecs.umich.edu } 1366253Sgblack@eecs.umich.edu}; 1376253Sgblack@eecs.umich.edu 1386253Sgblack@eecs.umich.edu/** 1396253Sgblack@eecs.umich.edu * Base class for predicated integer operations. 1406253Sgblack@eecs.umich.edu */ 1416253Sgblack@eecs.umich.educlass PredIntOp : public PredOp 1426253Sgblack@eecs.umich.edu{ 1436306Sgblack@eecs.umich.edu protected: 1446253Sgblack@eecs.umich.edu 1456306Sgblack@eecs.umich.edu uint32_t shift_size; 1466306Sgblack@eecs.umich.edu uint32_t shift; 1476253Sgblack@eecs.umich.edu 1486306Sgblack@eecs.umich.edu /// Constructor 1497099Sgblack@eecs.umich.edu PredIntOp(const char *mnem, ExtMachInst _machInst, OpClass __opClass) : 1506306Sgblack@eecs.umich.edu PredOp(mnem, _machInst, __opClass), 1516306Sgblack@eecs.umich.edu shift_size(machInst.shiftSize), shift(machInst.shift) 1526306Sgblack@eecs.umich.edu { 1536306Sgblack@eecs.umich.edu } 1546306Sgblack@eecs.umich.edu 1556306Sgblack@eecs.umich.edu std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const; 1566253Sgblack@eecs.umich.edu}; 1576253Sgblack@eecs.umich.edu 1586253Sgblack@eecs.umich.edu/** 1596253Sgblack@eecs.umich.edu * Base class for predicated macro-operations. 1606253Sgblack@eecs.umich.edu */ 1616253Sgblack@eecs.umich.educlass PredMacroOp : public PredOp 1626253Sgblack@eecs.umich.edu{ 1636306Sgblack@eecs.umich.edu protected: 1646253Sgblack@eecs.umich.edu 1656306Sgblack@eecs.umich.edu uint32_t numMicroops; 1666306Sgblack@eecs.umich.edu StaticInstPtr * microOps; 1676253Sgblack@eecs.umich.edu 1686306Sgblack@eecs.umich.edu /// Constructor 1697099Sgblack@eecs.umich.edu PredMacroOp(const char *mnem, ExtMachInst _machInst, OpClass __opClass) : 1706306Sgblack@eecs.umich.edu PredOp(mnem, _machInst, __opClass), 1716306Sgblack@eecs.umich.edu numMicroops(0) 1726306Sgblack@eecs.umich.edu { 1736306Sgblack@eecs.umich.edu // We rely on the subclasses of this object to handle the 1746306Sgblack@eecs.umich.edu // initialization of the micro-operations, since they are 1756306Sgblack@eecs.umich.edu // all of variable length 1766306Sgblack@eecs.umich.edu flags[IsMacroop] = true; 1776306Sgblack@eecs.umich.edu } 1786253Sgblack@eecs.umich.edu 1796306Sgblack@eecs.umich.edu ~PredMacroOp() 1806306Sgblack@eecs.umich.edu { 1816306Sgblack@eecs.umich.edu if (numMicroops) 1826306Sgblack@eecs.umich.edu delete [] microOps; 1836306Sgblack@eecs.umich.edu } 1846253Sgblack@eecs.umich.edu 1856306Sgblack@eecs.umich.edu StaticInstPtr 1866306Sgblack@eecs.umich.edu fetchMicroop(MicroPC microPC) 1876306Sgblack@eecs.umich.edu { 1886306Sgblack@eecs.umich.edu assert(microPC < numMicroops); 1896306Sgblack@eecs.umich.edu return microOps[microPC]; 1906306Sgblack@eecs.umich.edu } 1916253Sgblack@eecs.umich.edu 1926306Sgblack@eecs.umich.edu std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const; 1936253Sgblack@eecs.umich.edu}; 1946253Sgblack@eecs.umich.edu 1956253Sgblack@eecs.umich.edu/** 1966253Sgblack@eecs.umich.edu * Base class for predicated micro-operations. 1976253Sgblack@eecs.umich.edu */ 1986253Sgblack@eecs.umich.educlass PredMicroop : public PredOp 1996253Sgblack@eecs.umich.edu{ 2006306Sgblack@eecs.umich.edu /// Constructor 2017099Sgblack@eecs.umich.edu PredMicroop(const char *mnem, ExtMachInst _machInst, OpClass __opClass) : 2026306Sgblack@eecs.umich.edu PredOp(mnem, _machInst, __opClass) 2036306Sgblack@eecs.umich.edu { 2046306Sgblack@eecs.umich.edu flags[IsMicroop] = true; 2056306Sgblack@eecs.umich.edu } 2066253Sgblack@eecs.umich.edu}; 2076253Sgblack@eecs.umich.edu} 2086253Sgblack@eecs.umich.edu 2096253Sgblack@eecs.umich.edu#endif //__ARCH_ARM_INSTS_PREDINST_HH__ 210