1// Copyright (c) 2006-2007 The Regents of The University of Michigan 2// All rights reserved. 3// 4// Redistribution and use in source and binary forms, with or without 5// modification, are permitted provided that the following conditions are 6// met: redistributions of source code must retain the above copyright 7// notice, this list of conditions and the following disclaimer; 8// redistributions in binary form must reproduce the above copyright 9// notice, this list of conditions and the following disclaimer in the 10// documentation and/or other materials provided with the distribution; 11// neither the name of the copyright holders nor the names of its 12// contributors may be used to endorse or promote products derived from 13// this software without specific prior written permission. 14// 15// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 18// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 19// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 21// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26// 27// Authors: Ali Saidi 28// Gabe Black 29 30//////////////////////////////////////////////////////////////////// 31// 32// Block Memory instructions 33// 34 35output header {{ 36 37 class BlockMem : public SparcMacroInst 38 { 39 protected: 40 41 // Constructor 42 // We make the assumption that all block memory operations 43 // Will take 8 instructions to execute 44 BlockMem(const char *mnem, ExtMachInst _machInst) : 45 SparcMacroInst(mnem, _machInst, No_OpClass, 8) 46 {} 47 }; 48 49 class BlockMemImm : public BlockMem 50 { 51 protected: 52 53 // Constructor 54 BlockMemImm(const char *mnem, ExtMachInst _machInst) : 55 BlockMem(mnem, _machInst) 56 {} 57 }; 58 59 class BlockMemMicro : public SparcMicroInst 60 { 61 protected: 62 63 // Constructor 64 BlockMemMicro(const char *mnem, ExtMachInst _machInst, 65 OpClass __opClass, int8_t _offset) : 66 SparcMicroInst(mnem, _machInst, __opClass), 67 offset(_offset) 68 {} 69 70 std::string generateDisassembly(Addr pc, 71 const SymbolTable *symtab) const; 72 73 const int8_t offset; 74 }; 75 76 class BlockMemImmMicro : public BlockMemMicro 77 { 78 protected: 79 80 // Constructor 81 BlockMemImmMicro(const char *mnem, ExtMachInst _machInst, 82 OpClass __opClass, int8_t _offset) : 83 BlockMemMicro(mnem, _machInst, __opClass, _offset), 84 imm(sext<13>(SIMM13)) 85 {} 86 87 std::string generateDisassembly(Addr pc, 88 const SymbolTable *symtab) const; 89 90 const int32_t imm; 91 }; 92}}; 93 94output decoder {{ 95 std::string BlockMemMicro::generateDisassembly(Addr pc, 96 const SymbolTable *symtab) const 97 { 98 std::stringstream response; 99 bool load = flags[IsLoad]; 100 bool save = flags[IsStore]; 101 102 printMnemonic(response, mnemonic); 103 if (save) { 104 printReg(response, _srcRegIdx[0]); 105 ccprintf(response, ", "); 106 } 107 ccprintf(response, "[ "); 108 printReg(response, _srcRegIdx[!save ? 0 : 1]); 109 ccprintf(response, " + "); 110 printReg(response, _srcRegIdx[!save ? 1 : 2]); 111 ccprintf(response, " ]"); 112 if (load) { 113 ccprintf(response, ", "); 114 printReg(response, _destRegIdx[0]); 115 } 116 117 return response.str(); 118 } 119 120 std::string BlockMemImmMicro::generateDisassembly(Addr pc, 121 const SymbolTable *symtab) const 122 { 123 std::stringstream response; 124 bool load = flags[IsLoad]; 125 bool save = flags[IsStore]; 126 127 printMnemonic(response, mnemonic); 128 if (save) { 129 printReg(response, _srcRegIdx[1]); 130 ccprintf(response, ", "); 131 } 132 ccprintf(response, "[ "); 133 printReg(response, _srcRegIdx[0]); 134 if (imm >= 0) 135 ccprintf(response, " + 0x%x ]", imm); 136 else 137 ccprintf(response, " + -0x%x ]", -imm); 138 if (load) { 139 ccprintf(response, ", "); 140 printReg(response, _destRegIdx[0]); 141 } 142 143 return response.str(); 144 } 145 146}}; 147 148def template BlockMemDeclare {{ 149 /** 150 * Static instruction class for a block memory operation 151 */ 152 class %(class_name)s : public %(base_class)s 153 { 154 public: 155 // Constructor 156 %(class_name)s(ExtMachInst machInst); 157 158 protected: 159 class %(class_name)s_0 : public %(base_class)sMicro 160 { 161 public: 162 // Constructor 163 %(class_name)s_0(ExtMachInst machInst); 164 %(BasicExecDeclare)s 165 %(InitiateAccDeclare)s 166 %(CompleteAccDeclare)s 167 }; 168 169 class %(class_name)s_1 : public %(base_class)sMicro 170 { 171 public: 172 // Constructor 173 %(class_name)s_1(ExtMachInst machInst); 174 %(BasicExecDeclare)s 175 %(InitiateAccDeclare)s 176 %(CompleteAccDeclare)s 177 }; 178 179 class %(class_name)s_2 : public %(base_class)sMicro 180 { 181 public: 182 // Constructor 183 %(class_name)s_2(ExtMachInst machInst); 184 %(BasicExecDeclare)s 185 %(InitiateAccDeclare)s 186 %(CompleteAccDeclare)s 187 }; 188 189 class %(class_name)s_3 : public %(base_class)sMicro 190 { 191 public: 192 // Constructor 193 %(class_name)s_3(ExtMachInst machInst); 194 %(BasicExecDeclare)s 195 %(InitiateAccDeclare)s 196 %(CompleteAccDeclare)s 197 }; 198 199 class %(class_name)s_4 : public %(base_class)sMicro 200 { 201 public: 202 // Constructor 203 %(class_name)s_4(ExtMachInst machInst); 204 %(BasicExecDeclare)s 205 %(InitiateAccDeclare)s 206 %(CompleteAccDeclare)s 207 }; 208 209 class %(class_name)s_5 : public %(base_class)sMicro 210 { 211 public: 212 // Constructor 213 %(class_name)s_5(ExtMachInst machInst); 214 %(BasicExecDeclare)s 215 %(InitiateAccDeclare)s 216 %(CompleteAccDeclare)s 217 }; 218 219 class %(class_name)s_6 : public %(base_class)sMicro 220 { 221 public: 222 // Constructor 223 %(class_name)s_6(ExtMachInst machInst); 224 %(BasicExecDeclare)s 225 %(InitiateAccDeclare)s 226 %(CompleteAccDeclare)s 227 }; 228 229 class %(class_name)s_7 : public %(base_class)sMicro 230 { 231 public: 232 // Constructor 233 %(class_name)s_7(ExtMachInst machInst); 234 %(BasicExecDeclare)s 235 %(InitiateAccDeclare)s 236 %(CompleteAccDeclare)s 237 }; 238 }; 239}}; 240 241// Basic instruction class constructor template. 242def template BlockMemConstructor {{
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243 inline %(class_name)s::%(class_name)s(ExtMachInst machInst)
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243 %(class_name)s::%(class_name)s(ExtMachInst machInst) |
244 : %(base_class)s("%(mnemonic)s", machInst) 245 { 246 %(constructor)s; 247 microops[0] = new %(class_name)s_0(machInst); 248 microops[1] = new %(class_name)s_1(machInst); 249 microops[2] = new %(class_name)s_2(machInst); 250 microops[3] = new %(class_name)s_3(machInst); 251 microops[4] = new %(class_name)s_4(machInst); 252 microops[5] = new %(class_name)s_5(machInst); 253 microops[6] = new %(class_name)s_6(machInst); 254 microops[7] = new %(class_name)s_7(machInst); 255 } 256}}; 257 258def template BlockMemMicroConstructor {{
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259 inline %(class_name)s::
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259 %(class_name)s:: |
260 %(class_name)s_%(micro_pc)s:: 261 %(class_name)s_%(micro_pc)s(ExtMachInst machInst) : 262 %(base_class)sMicro("%(mnemonic)s[%(micro_pc)s]", 263 machInst, %(op_class)s, %(micro_pc)s * 8) 264 { 265 %(constructor)s; 266 %(set_flags)s; 267 } 268}}; 269 270let {{ 271 272 def doBlockMemFormat(code, faultCode, execute, name, Name, opt_flags): 273 # XXX Need to take care of pstate.hpriv as well. The lower ASIs 274 # are split into ones that are available in priv and hpriv, and 275 # those that are only available in hpriv 276 addrCalcReg = 'EA = Rs1 + Rs2 + offset;' 277 addrCalcImm = 'EA = Rs1 + imm + offset;' 278 iop = InstObjParams(name, Name, 'BlockMem', code, opt_flags) 279 iop_imm = InstObjParams(name, Name + 'Imm', 'BlockMemImm', code, opt_flags) 280 header_output = BlockMemDeclare.subst(iop) + BlockMemDeclare.subst(iop_imm) 281 decoder_output = BlockMemConstructor.subst(iop) + BlockMemConstructor.subst(iop_imm) 282 decode_block = ROrImmDecode.subst(iop) 283 matcher = re.compile(r'Frd_N') 284 exec_output = '' 285 for microPc in range(8): 286 flag_code = '' 287 if (microPc == 7): 288 flag_code = "flags[IsLastMicroop] = true;" 289 elif (microPc == 0): 290 flag_code = "flags[IsDelayedCommit] = true; flags[IsFirstMicroop] = true;" 291 else: 292 flag_code = "flags[IsDelayedCommit] = true;" 293 pcedCode = matcher.sub("Frd_%d" % microPc, code) 294 iop = InstObjParams(name, Name, 'BlockMem', 295 {"code": pcedCode, "ea_code": addrCalcReg, 296 "fault_check": faultCode, "micro_pc": microPc, 297 "set_flags": flag_code, "EA_trunc" : TruncateEA}, 298 opt_flags) 299 iop_imm = InstObjParams(name, Name + 'Imm', 'BlockMemImm', 300 {"code": pcedCode, "ea_code": addrCalcImm, 301 "fault_check": faultCode, "micro_pc": microPc, 302 "set_flags": flag_code, "EA_trunc" : TruncateEA}, 303 opt_flags) 304 decoder_output += BlockMemMicroConstructor.subst(iop) 305 decoder_output += BlockMemMicroConstructor.subst(iop_imm) 306 exec_output += doDualSplitExecute( 307 pcedCode, '', addrCalcReg, addrCalcImm, execute, faultCode, 308 makeMicroName(name, microPc), 309 makeMicroName(name + "Imm", microPc), 310 makeMicroName(Name, microPc), 311 makeMicroName(Name + "Imm", microPc), 312 "EXT_ASI", opt_flags); 313 faultCode = '' 314 return (header_output, decoder_output, exec_output, decode_block) 315}}; 316 317def format BlockLoad(code, *opt_flags) {{ 318 code = filterDoubles(code) 319 # We need to make sure to check the highest priority fault last. 320 # That way, if other faults have been detected, they'll be overwritten 321 # rather than the other way around. 322 faultCode = AlternateASIPrivFaultCheck + BlockAlignmentFaultCheck 323 (header_output, 324 decoder_output, 325 exec_output, 326 decode_block) = doBlockMemFormat(code, faultCode, 327 LoadFuncs, name, Name, opt_flags) 328}}; 329 330def format BlockStore(code, *opt_flags) {{ 331 code = filterDoubles(code) 332 # We need to make sure to check the highest priority fault last. 333 # That way, if other faults have been detected, they'll be overwritten 334 # rather than the other way around. 335 faultCode = AlternateASIPrivFaultCheck + BlockAlignmentFaultCheck 336 (header_output, 337 decoder_output, 338 exec_output, 339 decode_block) = doBlockMemFormat(code, faultCode, 340 StoreFuncs, name, Name, opt_flags) 341}};
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