integer.hh revision 8229
16691Stjones1@inf.ed.ac.uk/* 26691Stjones1@inf.ed.ac.uk * Copyright (c) 2009 The University of Edinburgh 36691Stjones1@inf.ed.ac.uk * All rights reserved. 46691Stjones1@inf.ed.ac.uk * 56691Stjones1@inf.ed.ac.uk * Redistribution and use in source and binary forms, with or without 66691Stjones1@inf.ed.ac.uk * modification, are permitted provided that the following conditions are 76691Stjones1@inf.ed.ac.uk * met: redistributions of source code must retain the above copyright 86691Stjones1@inf.ed.ac.uk * notice, this list of conditions and the following disclaimer; 96691Stjones1@inf.ed.ac.uk * redistributions in binary form must reproduce the above copyright 106691Stjones1@inf.ed.ac.uk * notice, this list of conditions and the following disclaimer in the 116691Stjones1@inf.ed.ac.uk * documentation and/or other materials provided with the distribution; 126691Stjones1@inf.ed.ac.uk * neither the name of the copyright holders nor the names of its 136691Stjones1@inf.ed.ac.uk * contributors may be used to endorse or promote products derived from 146691Stjones1@inf.ed.ac.uk * this software without specific prior written permission. 156691Stjones1@inf.ed.ac.uk * 166691Stjones1@inf.ed.ac.uk * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 176691Stjones1@inf.ed.ac.uk * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 186691Stjones1@inf.ed.ac.uk * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 196691Stjones1@inf.ed.ac.uk * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 206691Stjones1@inf.ed.ac.uk * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 216691Stjones1@inf.ed.ac.uk * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 226691Stjones1@inf.ed.ac.uk * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 236691Stjones1@inf.ed.ac.uk * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 246691Stjones1@inf.ed.ac.uk * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 256691Stjones1@inf.ed.ac.uk * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 266691Stjones1@inf.ed.ac.uk * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 276691Stjones1@inf.ed.ac.uk * 286691Stjones1@inf.ed.ac.uk * Authors: Timothy M. Jones 296691Stjones1@inf.ed.ac.uk */ 306691Stjones1@inf.ed.ac.uk 316691Stjones1@inf.ed.ac.uk#ifndef __ARCH_POWER_INSTS_INTEGER_HH__ 326691Stjones1@inf.ed.ac.uk#define __ARCH_POWER_INSTS_INTEGER_HH__ 336691Stjones1@inf.ed.ac.uk 346691Stjones1@inf.ed.ac.uk#include "arch/power/insts/static_inst.hh" 358229Snate@binkert.org#include "base/bitfield.hh" 366691Stjones1@inf.ed.ac.uk#include "base/cprintf.hh" 376691Stjones1@inf.ed.ac.uk 386691Stjones1@inf.ed.ac.uknamespace PowerISA 396691Stjones1@inf.ed.ac.uk{ 406691Stjones1@inf.ed.ac.uk 416691Stjones1@inf.ed.ac.uk/** 426691Stjones1@inf.ed.ac.uk * We provide a base class for integer operations and then inherit for 436691Stjones1@inf.ed.ac.uk * several other classes. These specialise for instructions using immediate 446691Stjones1@inf.ed.ac.uk * values and also rotate instructions. We also need to have versions that 456691Stjones1@inf.ed.ac.uk * consider the Rc and OE bits. 466691Stjones1@inf.ed.ac.uk */ 476691Stjones1@inf.ed.ac.uk 486691Stjones1@inf.ed.ac.uk/** 496691Stjones1@inf.ed.ac.uk * Base class for integer operations. 506691Stjones1@inf.ed.ac.uk */ 516691Stjones1@inf.ed.ac.ukclass IntOp : public PowerStaticInst 526691Stjones1@inf.ed.ac.uk{ 536691Stjones1@inf.ed.ac.uk protected: 546691Stjones1@inf.ed.ac.uk 556691Stjones1@inf.ed.ac.uk bool rcSet; 566691Stjones1@inf.ed.ac.uk bool oeSet; 576691Stjones1@inf.ed.ac.uk 586691Stjones1@inf.ed.ac.uk // Needed for srawi only 596691Stjones1@inf.ed.ac.uk uint32_t sh; 606691Stjones1@inf.ed.ac.uk 616691Stjones1@inf.ed.ac.uk /// Constructor 626691Stjones1@inf.ed.ac.uk IntOp(const char *mnem, MachInst _machInst, OpClass __opClass) 636691Stjones1@inf.ed.ac.uk : PowerStaticInst(mnem, _machInst, __opClass), 646691Stjones1@inf.ed.ac.uk rcSet(false), oeSet(false) 656691Stjones1@inf.ed.ac.uk { 666691Stjones1@inf.ed.ac.uk } 676691Stjones1@inf.ed.ac.uk 686691Stjones1@inf.ed.ac.uk /* Compute the CR (condition register) field using signed comparison */ 696691Stjones1@inf.ed.ac.uk inline uint32_t 706691Stjones1@inf.ed.ac.uk makeCRField(int32_t a, int32_t b, uint32_t xerSO) const 716691Stjones1@inf.ed.ac.uk { 726691Stjones1@inf.ed.ac.uk uint32_t c = xerSO; 736691Stjones1@inf.ed.ac.uk 746691Stjones1@inf.ed.ac.uk /* We've pre-shifted the immediate values here */ 756691Stjones1@inf.ed.ac.uk if (a < b) { c += 0x8; } 766691Stjones1@inf.ed.ac.uk else if (a > b) { c += 0x4; } 776691Stjones1@inf.ed.ac.uk else { c += 0x2; } 786691Stjones1@inf.ed.ac.uk return c; 796691Stjones1@inf.ed.ac.uk } 806691Stjones1@inf.ed.ac.uk 816691Stjones1@inf.ed.ac.uk /* Compute the CR (condition register) field using unsigned comparison */ 826691Stjones1@inf.ed.ac.uk inline uint32_t 836691Stjones1@inf.ed.ac.uk makeCRField(uint32_t a, uint32_t b, uint32_t xerSO) const 846691Stjones1@inf.ed.ac.uk { 856691Stjones1@inf.ed.ac.uk uint32_t c = xerSO; 866691Stjones1@inf.ed.ac.uk 876691Stjones1@inf.ed.ac.uk /* We've pre-shifted the immediate values here */ 886691Stjones1@inf.ed.ac.uk if (a < b) { c += 0x8; } 896691Stjones1@inf.ed.ac.uk else if (a > b) { c += 0x4; } 906691Stjones1@inf.ed.ac.uk else { c += 0x2; } 916691Stjones1@inf.ed.ac.uk return c; 926691Stjones1@inf.ed.ac.uk } 936691Stjones1@inf.ed.ac.uk 946691Stjones1@inf.ed.ac.uk std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const; 956691Stjones1@inf.ed.ac.uk}; 966691Stjones1@inf.ed.ac.uk 976691Stjones1@inf.ed.ac.uk 986691Stjones1@inf.ed.ac.uk/** 996691Stjones1@inf.ed.ac.uk * Class for integer immediate (signed and unsigned) operations. 1006691Stjones1@inf.ed.ac.uk */ 1016691Stjones1@inf.ed.ac.ukclass IntImmOp : public IntOp 1026691Stjones1@inf.ed.ac.uk{ 1036691Stjones1@inf.ed.ac.uk protected: 1046691Stjones1@inf.ed.ac.uk 1056691Stjones1@inf.ed.ac.uk int32_t imm; 1066691Stjones1@inf.ed.ac.uk uint32_t uimm; 1076691Stjones1@inf.ed.ac.uk 1086691Stjones1@inf.ed.ac.uk /// Constructor 1096691Stjones1@inf.ed.ac.uk IntImmOp(const char *mnem, MachInst _machInst, OpClass __opClass) 1106691Stjones1@inf.ed.ac.uk : IntOp(mnem, _machInst, __opClass), 1116691Stjones1@inf.ed.ac.uk imm(sext<16>(machInst.si)), 1126691Stjones1@inf.ed.ac.uk uimm(machInst.si) 1136691Stjones1@inf.ed.ac.uk { 1146691Stjones1@inf.ed.ac.uk } 1156691Stjones1@inf.ed.ac.uk 1166691Stjones1@inf.ed.ac.uk std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const; 1176691Stjones1@inf.ed.ac.uk}; 1186691Stjones1@inf.ed.ac.uk 1196691Stjones1@inf.ed.ac.uk 1206691Stjones1@inf.ed.ac.uk/** 1216691Stjones1@inf.ed.ac.uk * Class for integer operations with a shift. 1226691Stjones1@inf.ed.ac.uk */ 1236691Stjones1@inf.ed.ac.ukclass IntShiftOp : public IntOp 1246691Stjones1@inf.ed.ac.uk{ 1256691Stjones1@inf.ed.ac.uk protected: 1266691Stjones1@inf.ed.ac.uk 1276691Stjones1@inf.ed.ac.uk uint32_t sh; 1286691Stjones1@inf.ed.ac.uk 1296691Stjones1@inf.ed.ac.uk /// Constructor 1306691Stjones1@inf.ed.ac.uk IntShiftOp(const char *mnem, MachInst _machInst, OpClass __opClass) 1316691Stjones1@inf.ed.ac.uk : IntOp(mnem, _machInst, __opClass), 1326691Stjones1@inf.ed.ac.uk sh(machInst.sh) 1336691Stjones1@inf.ed.ac.uk { 1346691Stjones1@inf.ed.ac.uk } 1356691Stjones1@inf.ed.ac.uk 1366691Stjones1@inf.ed.ac.uk std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const; 1376691Stjones1@inf.ed.ac.uk}; 1386691Stjones1@inf.ed.ac.uk 1396691Stjones1@inf.ed.ac.uk 1406691Stjones1@inf.ed.ac.uk/** 1416691Stjones1@inf.ed.ac.uk * Class for integer rotate operations. 1426691Stjones1@inf.ed.ac.uk */ 1436691Stjones1@inf.ed.ac.ukclass IntRotateOp : public IntShiftOp 1446691Stjones1@inf.ed.ac.uk{ 1456691Stjones1@inf.ed.ac.uk protected: 1466691Stjones1@inf.ed.ac.uk 1476691Stjones1@inf.ed.ac.uk uint32_t mb; 1486691Stjones1@inf.ed.ac.uk uint32_t me; 1496691Stjones1@inf.ed.ac.uk uint32_t fullMask; 1506691Stjones1@inf.ed.ac.uk 1516691Stjones1@inf.ed.ac.uk /// Constructor 1526691Stjones1@inf.ed.ac.uk IntRotateOp(const char *mnem, MachInst _machInst, OpClass __opClass) 1536691Stjones1@inf.ed.ac.uk : IntShiftOp(mnem, _machInst, __opClass), 1546691Stjones1@inf.ed.ac.uk mb(machInst.mb), 1556691Stjones1@inf.ed.ac.uk me(machInst.me) 1566691Stjones1@inf.ed.ac.uk { 1576691Stjones1@inf.ed.ac.uk if (me >= mb) { 1586691Stjones1@inf.ed.ac.uk fullMask = mask(31 - mb, 31 - me); 1596691Stjones1@inf.ed.ac.uk } else { 1606691Stjones1@inf.ed.ac.uk fullMask = ~mask(31 - (me + 1), 31 - (mb - 1)); 1616691Stjones1@inf.ed.ac.uk } 1626691Stjones1@inf.ed.ac.uk } 1636691Stjones1@inf.ed.ac.uk 1646691Stjones1@inf.ed.ac.uk uint32_t 1656691Stjones1@inf.ed.ac.uk rotateValue(uint32_t rs, uint32_t shift) const 1666691Stjones1@inf.ed.ac.uk { 1676691Stjones1@inf.ed.ac.uk uint32_t n = shift & 31; 1686691Stjones1@inf.ed.ac.uk return (rs << n) | (rs >> (32 - n)); 1696691Stjones1@inf.ed.ac.uk } 1706691Stjones1@inf.ed.ac.uk 1716691Stjones1@inf.ed.ac.uk std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const; 1726691Stjones1@inf.ed.ac.uk}; 1736691Stjones1@inf.ed.ac.uk 1747811Ssteve.reinhardt@amd.com} // namespace PowerISA 1756691Stjones1@inf.ed.ac.uk 1766691Stjones1@inf.ed.ac.uk#endif //__ARCH_POWER_INSTS_INTEGER_HH__ 177