| microasm.isa (4336:bd6ab22f8e11) | microasm.isa (4338:24d31b35bcf9) |
|---|---|
| 1// -*- mode:c++ -*- 2 3// Copyright (c) 2007 The Hewlett-Packard Development Company 4// All rights reserved. 5// 6// Redistribution and use of this software in source and binary forms, 7// with or without modification, are permitted provided that the 8// following conditions are met: --- 121 unchanged lines hidden (view full) --- 130 def specializeInst(name, Name, code, opTypes): 131 opNum = len(opTypes) - 1 132 while len(opTypes): 133 # print "Building a composite op with tags", opTypes 134 # print "And code", code 135 opNum = len(opTypes) - 1 136 # A regular expression to find the operand placeholders we're 137 # interested in. | 1// -*- mode:c++ -*- 2 3// Copyright (c) 2007 The Hewlett-Packard Development Company 4// All rights reserved. 5// 6// Redistribution and use of this software in source and binary forms, 7// with or without modification, are permitted provided that the 8// following conditions are met: --- 121 unchanged lines hidden (view full) --- 130 def specializeInst(name, Name, code, opTypes): 131 opNum = len(opTypes) - 1 132 while len(opTypes): 133 # print "Building a composite op with tags", opTypes 134 # print "And code", code 135 opNum = len(opTypes) - 1 136 # A regular expression to find the operand placeholders we're 137 # interested in. |
| 138 opRe = re.compile("%%(?P<operandNum>%d)(?=[^0-9]|$)" % opNum) | 138 opRe = re.compile("\\^(?P<operandNum>%d)(?=[^0-9]|$)" % opNum) |
| 139 140 # Parse the operand type strign we're working with | 139 140 # Parse the operand type strign we're working with |
| 141 print "About to parse tag %s" % opTypes[opNum] | |
| 142 opType = OpType(opTypes[opNum]) 143 144 if opType.reg: 145 #Figure out what to do with fixed register operands 146 if opType.reg in ("Ax", "Bx", "Cx", "Dx"): | 141 opType = OpType(opTypes[opNum]) 142 143 if opType.reg: 144 #Figure out what to do with fixed register operands 145 if opType.reg in ("Ax", "Bx", "Cx", "Dx"): |
| 147 code = opRe.sub("{INTREG_R%s}" % opType.reg.upper(), code) | 146 code = opRe.sub("%%{INTREG_R%s}" % opType.reg.upper(), code) |
| 148 elif opType.reg == "Al": 149 # We need a way to specify register width | 147 elif opType.reg == "Al": 148 # We need a way to specify register width |
| 150 code = opRe.sub("{INTREG_RAX}", code) | 149 code = opRe.sub("%{INTREG_RAX}", code) |
| 151 else: 152 print "Didn't know how to encode fixed register %s!" % opType.reg 153 elif opType.tag == None or opType.size == None: 154 raise Exception, "Problem parsing operand tag: %s" % opType.tag 155 elif opType.tag in ("C", "D", "G", "P", "S", "T", "V"): 156 # Use the "reg" field of the ModRM byte to select the register | 150 else: 151 print "Didn't know how to encode fixed register %s!" % opType.reg 152 elif opType.tag == None or opType.size == None: 153 raise Exception, "Problem parsing operand tag: %s" % opType.tag 154 elif opType.tag in ("C", "D", "G", "P", "S", "T", "V"): 155 # Use the "reg" field of the ModRM byte to select the register |
| 157 code = opRe.sub("{(uint8_t)MODRM_REG}", code) | 156 code = opRe.sub("%{(uint8_t)MODRM_REG}", code) |
| 158 elif opType.tag in ("E", "Q", "W"): 159 # This might refer to memory or to a register. We need to 160 # divide it up farther. | 157 elif opType.tag in ("E", "Q", "W"): 158 # This might refer to memory or to a register. We need to 159 # divide it up farther. |
| 161 regCode = opRe.sub("{(uint8_t)MODRM_RM}", code) | 160 regCode = opRe.sub("%{(uint8_t)MODRM_RM}", code) |
| 162 regTypes = copy.copy(opTypes) 163 regTypes.pop(-1) 164 # This needs to refer to memory, but we'll fill in the details 165 # later. It needs to take into account unaligned memory 166 # addresses. | 161 regTypes = copy.copy(opTypes) 162 regTypes.pop(-1) 163 # This needs to refer to memory, but we'll fill in the details 164 # later. It needs to take into account unaligned memory 165 # addresses. |
| 167 memCode = opRe.sub("0", code) | 166 memCode = opRe.sub("%0", code) |
| 168 memTypes = copy.copy(opTypes) 169 memTypes.pop(-1) 170 return doSplitDecode(name, Name, specializeInst, "MODRM_MOD", 171 {"3" : (regCode, regTypes)}, (memCode, memTypes)) 172 elif opType.tag in ("I", "J"): 173 # Immediates are already in the instruction, so don't leave in 174 # those parameters | 167 memTypes = copy.copy(opTypes) 168 memTypes.pop(-1) 169 return doSplitDecode(name, Name, specializeInst, "MODRM_MOD", 170 {"3" : (regCode, regTypes)}, (memCode, memTypes)) 171 elif opType.tag in ("I", "J"): 172 # Immediates are already in the instruction, so don't leave in 173 # those parameters |
| 175 code = opRe.sub("", code) | 174 code = opRe.sub("${IMMEDIATE}", code) |
| 176 elif opType.tag == "M": 177 # This needs to refer to memory, but we'll fill in the details 178 # later. It needs to take into account unaligned memory 179 # addresses. | 175 elif opType.tag == "M": 176 # This needs to refer to memory, but we'll fill in the details 177 # later. It needs to take into account unaligned memory 178 # addresses. |
| 180 code = opRe.sub("0", code) | 179 code = opRe.sub("%0", code) |
| 181 elif opType.tag in ("PR", "R", "VR"): 182 # There should probably be a check here to verify that mod 183 # is equal to 11b | 180 elif opType.tag in ("PR", "R", "VR"): 181 # There should probably be a check here to verify that mod 182 # is equal to 11b |
| 184 code = opRe.sub("{(uint8_t)MODRM_RM}", code) | 183 code = opRe.sub("%{(uint8_t)MODRM_RM}", code) |
| 185 else: 186 raise Exception, "Unrecognized tag %s." % opType.tag 187 opTypes.pop(-1) 188 189 # At this point, we've built up "code" to have all the necessary extra 190 # instructions needed to implement whatever types of operands were 191 # specified. Now we'll assemble it it into a microOp sequence. 192 ops = assembleMicro(code) --- 25 unchanged lines hidden (view full) --- 218 if val: 219 text += ", true" 220 else: 221 text += ", false" 222 return text 223 224 def getAllocator(self, *microFlags): 225 args = '' | 184 else: 185 raise Exception, "Unrecognized tag %s." % opType.tag 186 opTypes.pop(-1) 187 188 # At this point, we've built up "code" to have all the necessary extra 189 # instructions needed to implement whatever types of operands were 190 # specified. Now we'll assemble it it into a microOp sequence. 191 ops = assembleMicro(code) --- 25 unchanged lines hidden (view full) --- 217 if val: 218 text += ", true" 219 else: 220 text += ", false" 221 return text 222 223 def getAllocator(self, *microFlags): 224 args = '' |
| 225 signature = "<" 226 emptySig = True |
|
| 226 for arg in self.args: | 227 for arg in self.args: |
| 227 if arg.has_key("operandConst"): 228 args += ", %s" % arg["operandConst"] 229 elif arg.has_key("operandCode"): 230 args += ", %s" % arg["operandCode"] | 228 if not emptySig: 229 signature += ", " 230 emptySig = False 231 if arg.has_key("operandImm"): 232 args += ", %s" % arg["operandImm"] 233 signature += ImmOpType 234 elif arg.has_key("operandReg"): 235 args += ", %s" % arg["operandReg"] 236 signature += RegOpType |
| 231 elif arg.has_key("operandLabel"): 232 raise Exception, "Found a label while creating allocator string." 233 else: 234 raise Exception, "Unrecognized operand type." | 237 elif arg.has_key("operandLabel"): 238 raise Exception, "Found a label while creating allocator string." 239 else: 240 raise Exception, "Unrecognized operand type." |
| 235 return 'new %s(machInst%s%s)' % (self.className, self.microFlagsText(microFlags), args) | 241 signature += ">" 242 return 'new %s%s(machInst%s%s)' % (self.className, signature, self.microFlagsText(microFlags), args) |
| 236}}; 237 238let {{ 239 def buildLabelDict(ops): 240 labels = {} 241 micropc = 0 242 for op in ops: 243 if op.label: --- 11 unchanged lines hidden (view full) --- 255 orig_code = code 256 # A list of the statements we've found thus far 257 statements = [] 258 259 # Regular expressions to pull each piece of the statement out at a 260 # time. Each expression expects the thing it's looking for to be at 261 # the beginning of the line, so the previous component is stripped 262 # before continuing. | 243}}; 244 245let {{ 246 def buildLabelDict(ops): 247 labels = {} 248 micropc = 0 249 for op in ops: 250 if op.label: --- 11 unchanged lines hidden (view full) --- 262 orig_code = code 263 # A list of the statements we've found thus far 264 statements = [] 265 266 # Regular expressions to pull each piece of the statement out at a 267 # time. Each expression expects the thing it's looking for to be at 268 # the beginning of the line, so the previous component is stripped 269 # before continuing. |
| 263 labelRe = re.compile(r'^[ \t]*(?P<label>[a-zA-Z_]\w*)[ \t]:') | 270 labelRe = re.compile(r'^[ \t]*(?P<label>\w\w*)[ \t]:') |
| 264 lineRe = re.compile(r'^(?P<line>[^\n][^\n]*)$') 265 classRe = re.compile(r'^[ \t]*(?P<className>[a-zA-Z_]\w*)') 266 # This recognizes three different flavors of operands: 267 # 1. Raw decimal numbers composed of digits between 0 and 9 268 # 2. Code beginning with "{" and continuing until the first "}" 269 # ^ This one might need revising 270 # 3. A label, which starts with a capital or small letter, or 271 # underscore, which is optionally followed by a sequence of 272 # capital or small letters, underscores, or digts between 0 and 9 273 opRe = re.compile( \ | 271 lineRe = re.compile(r'^(?P<line>[^\n][^\n]*)$') 272 classRe = re.compile(r'^[ \t]*(?P<className>[a-zA-Z_]\w*)') 273 # This recognizes three different flavors of operands: 274 # 1. Raw decimal numbers composed of digits between 0 and 9 275 # 2. Code beginning with "{" and continuing until the first "}" 276 # ^ This one might need revising 277 # 3. A label, which starts with a capital or small letter, or 278 # underscore, which is optionally followed by a sequence of 279 # capital or small letters, underscores, or digts between 0 and 9 280 opRe = re.compile( \ |
| 274 r'^[ \t]*((?P<operandLabel>[a-zA-Z_]\w*)|(?P<operandConst>[0-9][0-9]*)|(\{(?P<operandCode>[^}]*)\}))') | 281 r'^[ \t]*((\@(?P<operandLabel0>\w\w*))|' + 282 r'(\@\{(?P<operandLabel1>[^}]*)\})|' + 283 r'(\%(?P<operandReg0>\w\w*))|' + 284 r'(\%\{(?P<operandReg1>[^}]*)\})|' + 285 r'(\$(?P<operandImm0>\w\w*))|' + 286 r'(\$\{(?P<operandImm1>[^}]*)\}))') |
| 275 lineMatch = lineRe.search(code) 276 while lineMatch != None: 277 statement = MicroOpStatement() 278 # Get a line and seperate it from the rest of the code 279 line = lineMatch.group("line") 280 orig_line = line 281 # print "Parsing line %s" % line 282 code = lineRe.sub('', code, 1) --- 22 unchanged lines hidden (view full) --- 305 statement.args = [] 306 opMatch = opRe.search(line) 307 while opMatch is not None: 308 statement.args.append({}) 309 # args is a list of dicts which collect different 310 # representations of operand values. Different forms might be 311 # needed in different places, for instance to replace a label 312 # with an offset. | 287 lineMatch = lineRe.search(code) 288 while lineMatch != None: 289 statement = MicroOpStatement() 290 # Get a line and seperate it from the rest of the code 291 line = lineMatch.group("line") 292 orig_line = line 293 # print "Parsing line %s" % line 294 code = lineRe.sub('', code, 1) --- 22 unchanged lines hidden (view full) --- 317 statement.args = [] 318 opMatch = opRe.search(line) 319 while opMatch is not None: 320 statement.args.append({}) 321 # args is a list of dicts which collect different 322 # representations of operand values. Different forms might be 323 # needed in different places, for instance to replace a label 324 # with an offset. |
| 313 for opType in ("operandLabel", "operandConst", "operandCode"): | 325 for opType in ("operandLabel0", "operandReg0", "operandImm0", 326 "operandLabel1", "operandReg1", "operandImm1"): |
| 314 if opMatch.group(opType): | 327 if opMatch.group(opType): |
| 315 statement.args[-1][opType] = opMatch.group(opType) | 328 statement.args[-1][opType[:-1]] = opMatch.group(opType) |
| 316 if len(statement.args[-1]) == 0: 317 print "Problem parsing operand in statement: %s" \ 318 % orig_line 319 line = opRe.sub('', line, 1) 320 # print "Found operand %s." % statement.args[-1] 321 opMatch = opRe.search(line) 322 # print "Found operands", statement.args 323 --- 9 unchanged lines hidden (view full) --- 333 for statement in statements: 334 for arg in statement.args: 335 if arg.has_key("operandLabel"): 336 if not labels.has_key(arg["operandLabel"]): 337 raise Exception, "Unrecognized label: %s." % arg["operandLabel"] 338 # This is assuming that intra microcode branches go to 339 # the next micropc + displacement, or 340 # micropc + 1 + displacement. | 329 if len(statement.args[-1]) == 0: 330 print "Problem parsing operand in statement: %s" \ 331 % orig_line 332 line = opRe.sub('', line, 1) 333 # print "Found operand %s." % statement.args[-1] 334 opMatch = opRe.search(line) 335 # print "Found operands", statement.args 336 --- 9 unchanged lines hidden (view full) --- 346 for statement in statements: 347 for arg in statement.args: 348 if arg.has_key("operandLabel"): 349 if not labels.has_key(arg["operandLabel"]): 350 raise Exception, "Unrecognized label: %s." % arg["operandLabel"] 351 # This is assuming that intra microcode branches go to 352 # the next micropc + displacement, or 353 # micropc + 1 + displacement. |
| 341 arg["operandConst"] = labels[arg["operandLabel"]] - micropc - 1 | 354 arg["operandImm"] = labels[arg["operandLabel"]] - micropc - 1 |
| 342 micropc += 1 343 return statements 344}}; | 355 micropc += 1 356 return statements 357}}; |