int.isa revision 2750:1cca27adb880
1// -*- mode:c++ -*- 2 3// Copyright (c) 2003-2006 The Regents of The University of Michigan 4// All rights reserved. 5// 6// Redistribution and use in source and binary forms, with or without 7// modification, are permitted provided that the following conditions are 8// met: redistributions of source code must retain the above copyright 9// notice, this list of conditions and the following disclaimer; 10// redistributions in binary form must reproduce the above copyright 11// notice, this list of conditions and the following disclaimer in the 12// documentation and/or other materials provided with the distribution; 13// neither the name of the copyright holders nor the names of its 14// contributors may be used to endorse or promote products derived from 15// this software without specific prior written permission. 16// 17// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28// 29// Authors: Korey Sewell 30 31//////////////////////////////////////////////////////////////////// 32// 33// Integer operate instructions 34// 35output header {{ 36#include <iostream> 37 using namespace std; 38 /** 39 * Base class for integer operations. 40 */ 41 class IntOp : public MipsStaticInst 42 { 43 protected: 44 45 /// Constructor 46 IntOp(const char *mnem, MachInst _machInst, OpClass __opClass) : 47 MipsStaticInst(mnem, _machInst, __opClass) 48 { 49 } 50 51 std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const; 52 }; 53 54 55 class HiLoOp: public IntOp 56 { 57 protected: 58 59 /// Constructor 60 HiLoOp(const char *mnem, MachInst _machInst, OpClass __opClass) : 61 IntOp(mnem, _machInst, __opClass) 62 { 63 } 64 65 std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const; 66 }; 67 68 class HiLoMiscOp: public HiLoOp 69 { 70 protected: 71 72 /// Constructor 73 HiLoMiscOp(const char *mnem, MachInst _machInst, OpClass __opClass) : 74 HiLoOp(mnem, _machInst, __opClass) 75 { 76 } 77 78 std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const; 79 }; 80 81 82 class IntImmOp : public MipsStaticInst 83 { 84 protected: 85 86 int16_t imm; 87 int32_t sextImm; 88 uint32_t zextImm; 89 90 /// Constructor 91 IntImmOp(const char *mnem, MachInst _machInst, OpClass __opClass) : 92 MipsStaticInst(mnem, _machInst, __opClass),imm(INTIMM), 93 sextImm(INTIMM),zextImm(0x0000FFFF & INTIMM) 94 { 95 //If Bit 15 is 1 then Sign Extend 96 int32_t temp = sextImm & 0x00008000; 97 if (temp > 0 && mnemonic != "lui") { 98 sextImm |= 0xFFFF0000; 99 } 100 } 101 102 std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const; 103 104 105 }; 106 107}}; 108 109// HiLo<Misc> instruction class execute method template. 110// Mainly to get instruction trace data to print out 111// correctly 112def template HiLoExecute {{ 113 Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, Trace::InstRecord *traceData) const 114 { 115 Fault fault = NoFault; 116 117 %(fp_enable_check)s; 118 %(op_decl)s; 119 %(op_rd)s; 120 %(code)s; 121 122 if(fault == NoFault) 123 { 124 %(op_wb)s; 125 //If there are 2 Destination Registers then 126 //concatenate the values for the traceData 127 if(traceData && _numDestRegs == 2) { 128 uint64_t hilo_final_val = (uint64_t)HI << 32 | LO; 129 traceData->setData(hilo_final_val); 130 } 131 } 132 return fault; 133 } 134}}; 135 136//Outputs to decoder.cc 137output decoder {{ 138 std::string IntOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const 139 { 140 std::stringstream ss; 141 142 ccprintf(ss, "%-10s ", mnemonic); 143 144 // just print the first dest... if there's a second one, 145 // it's generally implicit 146 if (_numDestRegs > 0) { 147 printReg(ss, _destRegIdx[0]); 148 ss << ", "; 149 } 150 151 // just print the first two source regs... if there's 152 // a third one, it's a read-modify-write dest (Rc), 153 // e.g. for CMOVxx 154 if (_numSrcRegs > 0) { 155 printReg(ss, _srcRegIdx[0]); 156 } 157 158 if (_numSrcRegs > 1) { 159 ss << ", "; 160 printReg(ss, _srcRegIdx[1]); 161 } 162 163 return ss.str(); 164 } 165 166 std::string HiLoOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const 167 { 168 std::stringstream ss; 169 170 ccprintf(ss, "%-10s ", mnemonic); 171 172 //Destination Registers are implicit for HI/LO ops 173 if (_numSrcRegs > 0) { 174 printReg(ss, _srcRegIdx[0]); 175 } 176 177 if (_numSrcRegs > 1) { 178 ss << ", "; 179 printReg(ss, _srcRegIdx[1]); 180 } 181 182 return ss.str(); 183 } 184 185 std::string HiLoMiscOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const 186 { 187 std::stringstream ss; 188 189 ccprintf(ss, "%-10s ", mnemonic); 190 191 if (_numDestRegs > 0 && _destRegIdx[0] < 32) { 192 printReg(ss, _destRegIdx[0]); 193 } else if (_numSrcRegs > 0 && _srcRegIdx[0] < 32) { 194 printReg(ss, _srcRegIdx[0]); 195 } 196 197 return ss.str(); 198 } 199 200 std::string IntImmOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const 201 { 202 std::stringstream ss; 203 204 ccprintf(ss, "%-10s ", mnemonic); 205 206 if (_numDestRegs > 0) { 207 printReg(ss, _destRegIdx[0]); 208 } 209 210 ss << ", "; 211 212 if (_numSrcRegs > 0) { 213 printReg(ss, _srcRegIdx[0]); 214 ss << ", "; 215 } 216 217 if( mnemonic == "lui") 218 ccprintf(ss, "0x%x ", sextImm); 219 else 220 ss << (int) sextImm; 221 222 return ss.str(); 223 } 224 225}}; 226 227def format IntOp(code, *opt_flags) {{ 228 iop = InstObjParams(name, Name, 'IntOp', CodeBlock(code), opt_flags) 229 header_output = BasicDeclare.subst(iop) 230 decoder_output = BasicConstructor.subst(iop) 231 decode_block = RegNopCheckDecode.subst(iop) 232 exec_output = BasicExecute.subst(iop) 233}}; 234 235def format IntImmOp(code, *opt_flags) {{ 236 iop = InstObjParams(name, Name, 'IntImmOp', CodeBlock(code), opt_flags) 237 header_output = BasicDeclare.subst(iop) 238 decoder_output = BasicConstructor.subst(iop) 239 decode_block = ImmNopCheckDecode.subst(iop) 240 exec_output = BasicExecute.subst(iop) 241}}; 242 243def format HiLoOp(code, *opt_flags) {{ 244 if '.sd' in code: 245 code = 'int64_t ' + code 246 elif '.ud' in code: 247 code = 'uint64_t ' + code 248 249 code += 'HI = val<63:32>;\n' 250 code += 'LO = val<31:0>;\n' 251 252 iop = InstObjParams(name, Name, 'HiLoOp', CodeBlock(code), opt_flags) 253 header_output = BasicDeclare.subst(iop) 254 decoder_output = BasicConstructor.subst(iop) 255 decode_block = BasicDecode.subst(iop) 256 exec_output = HiLoExecute.subst(iop) 257}}; 258 259def format HiLoMiscOp(code, *opt_flags) {{ 260 iop = InstObjParams(name, Name, 'HiLoMiscOp', CodeBlock(code), opt_flags) 261 header_output = BasicDeclare.subst(iop) 262 decoder_output = BasicConstructor.subst(iop) 263 decode_block = BasicDecode.subst(iop) 264 exec_output = HiLoExecute.subst(iop) 265}}; 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