microasm.isa revision 4336
14309Sgblack@eecs.umich.edu// -*- mode:c++ -*- 24309Sgblack@eecs.umich.edu 34309Sgblack@eecs.umich.edu// Copyright (c) 2007 The Hewlett-Packard Development Company 44309Sgblack@eecs.umich.edu// All rights reserved. 54309Sgblack@eecs.umich.edu// 64309Sgblack@eecs.umich.edu// Redistribution and use of this software in source and binary forms, 74309Sgblack@eecs.umich.edu// with or without modification, are permitted provided that the 84309Sgblack@eecs.umich.edu// following conditions are met: 94309Sgblack@eecs.umich.edu// 104309Sgblack@eecs.umich.edu// The software must be used only for Non-Commercial Use which means any 114309Sgblack@eecs.umich.edu// use which is NOT directed to receiving any direct monetary 124309Sgblack@eecs.umich.edu// compensation for, or commercial advantage from such use. Illustrative 134309Sgblack@eecs.umich.edu// examples of non-commercial use are academic research, personal study, 144309Sgblack@eecs.umich.edu// teaching, education and corporate research & development. 154309Sgblack@eecs.umich.edu// Illustrative examples of commercial use are distributing products for 164309Sgblack@eecs.umich.edu// commercial advantage and providing services using the software for 174309Sgblack@eecs.umich.edu// commercial advantage. 184309Sgblack@eecs.umich.edu// 194309Sgblack@eecs.umich.edu// If you wish to use this software or functionality therein that may be 204309Sgblack@eecs.umich.edu// covered by patents for commercial use, please contact: 214309Sgblack@eecs.umich.edu// Director of Intellectual Property Licensing 224309Sgblack@eecs.umich.edu// Office of Strategy and Technology 234309Sgblack@eecs.umich.edu// Hewlett-Packard Company 244309Sgblack@eecs.umich.edu// 1501 Page Mill Road 254309Sgblack@eecs.umich.edu// Palo Alto, California 94304 264309Sgblack@eecs.umich.edu// 274309Sgblack@eecs.umich.edu// Redistributions of source code must retain the above copyright notice, 284309Sgblack@eecs.umich.edu// this list of conditions and the following disclaimer. Redistributions 294309Sgblack@eecs.umich.edu// in binary form must reproduce the above copyright notice, this list of 304309Sgblack@eecs.umich.edu// conditions and the following disclaimer in the documentation and/or 314309Sgblack@eecs.umich.edu// other materials provided with the distribution. Neither the name of 324309Sgblack@eecs.umich.edu// the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its 334309Sgblack@eecs.umich.edu// contributors may be used to endorse or promote products derived from 344309Sgblack@eecs.umich.edu// this software without specific prior written permission. No right of 354309Sgblack@eecs.umich.edu// sublicense is granted herewith. Derivatives of the software and 364309Sgblack@eecs.umich.edu// output created using the software may be prepared, but only for 374309Sgblack@eecs.umich.edu// Non-Commercial Uses. Derivatives of the software may be shared with 384309Sgblack@eecs.umich.edu// others provided: (i) the others agree to abide by the list of 394309Sgblack@eecs.umich.edu// conditions herein which includes the Non-Commercial Use restrictions; 404309Sgblack@eecs.umich.edu// and (ii) such Derivatives of the software include the above copyright 414309Sgblack@eecs.umich.edu// notice to acknowledge the contribution from this software where 424309Sgblack@eecs.umich.edu// applicable, this list of conditions and the disclaimer below. 434309Sgblack@eecs.umich.edu// 444309Sgblack@eecs.umich.edu// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 454309Sgblack@eecs.umich.edu// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 464309Sgblack@eecs.umich.edu// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 474309Sgblack@eecs.umich.edu// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 484309Sgblack@eecs.umich.edu// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 494309Sgblack@eecs.umich.edu// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 504309Sgblack@eecs.umich.edu// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 514309Sgblack@eecs.umich.edu// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 524309Sgblack@eecs.umich.edu// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 534309Sgblack@eecs.umich.edu// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 544309Sgblack@eecs.umich.edu// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 554309Sgblack@eecs.umich.edu// 564309Sgblack@eecs.umich.edu// Authors: Gabe Black 574309Sgblack@eecs.umich.edu 584309Sgblack@eecs.umich.edu//////////////////////////////////////////////////////////////////// 594309Sgblack@eecs.umich.edu// 604336Sgblack@eecs.umich.edu// Code to "specialize" a microcode sequence to use a particular 614336Sgblack@eecs.umich.edu// variety of operands 624309Sgblack@eecs.umich.edu// 634309Sgblack@eecs.umich.edu 644309Sgblack@eecs.umich.edulet {{ 654336Sgblack@eecs.umich.edu # This builds either a regular or macro op to implement the sequence of 664336Sgblack@eecs.umich.edu # ops we give it. 674336Sgblack@eecs.umich.edu def genInst(name, Name, ops): 684336Sgblack@eecs.umich.edu # If we can implement this instruction with exactly one microop, just 694336Sgblack@eecs.umich.edu # use that directly. 704336Sgblack@eecs.umich.edu newStmnt = '' 714336Sgblack@eecs.umich.edu if len(ops) == 1: 724336Sgblack@eecs.umich.edu decode_block = "return (X86StaticInst *)(%s);" % \ 734336Sgblack@eecs.umich.edu ops[0].getAllocator() 744336Sgblack@eecs.umich.edu return ('', '', decode_block, '') 754336Sgblack@eecs.umich.edu else: 764336Sgblack@eecs.umich.edu # Build a macroop to contain the sequence of microops we've 774336Sgblack@eecs.umich.edu # been given. 784336Sgblack@eecs.umich.edu return genMacroOp(name, Name, ops) 794336Sgblack@eecs.umich.edu}}; 804336Sgblack@eecs.umich.edu 814336Sgblack@eecs.umich.edulet {{ 824336Sgblack@eecs.umich.edu # This code builds up a decode block which decodes based on switchval. 834336Sgblack@eecs.umich.edu # vals is a dict which matches case values with what should be decoded to. 844336Sgblack@eecs.umich.edu # builder is called on the exploded contents of "vals" values to generate 854336Sgblack@eecs.umich.edu # whatever code should be used. 864336Sgblack@eecs.umich.edu def doSplitDecode(name, Name, builder, switchVal, vals, default = None): 874336Sgblack@eecs.umich.edu header_output = '' 884336Sgblack@eecs.umich.edu decoder_output = '' 894336Sgblack@eecs.umich.edu decode_block = 'switch(%s) {\n' % switchVal 904336Sgblack@eecs.umich.edu exec_output = '' 914336Sgblack@eecs.umich.edu for (val, todo) in vals.items(): 924336Sgblack@eecs.umich.edu (new_header_output, 934336Sgblack@eecs.umich.edu new_decoder_output, 944336Sgblack@eecs.umich.edu new_decode_block, 954336Sgblack@eecs.umich.edu new_exec_output) = builder(name, Name, *todo) 964336Sgblack@eecs.umich.edu header_output += new_header_output 974336Sgblack@eecs.umich.edu decoder_output += new_decoder_output 984336Sgblack@eecs.umich.edu decode_block += '\tcase %s: %s\n' % (val, new_decode_block) 994336Sgblack@eecs.umich.edu exec_output += new_exec_output 1004336Sgblack@eecs.umich.edu if default: 1014336Sgblack@eecs.umich.edu (new_header_output, 1024336Sgblack@eecs.umich.edu new_decoder_output, 1034336Sgblack@eecs.umich.edu new_decode_block, 1044336Sgblack@eecs.umich.edu new_exec_output) = builder(name, Name, *default) 1054336Sgblack@eecs.umich.edu header_output += new_header_output 1064336Sgblack@eecs.umich.edu decoder_output += new_decoder_output 1074336Sgblack@eecs.umich.edu decode_block += '\tdefault: %s\n' % new_decode_block 1084336Sgblack@eecs.umich.edu exec_output += new_exec_output 1094336Sgblack@eecs.umich.edu decode_block += '}\n' 1104336Sgblack@eecs.umich.edu return (header_output, decoder_output, decode_block, exec_output) 1114336Sgblack@eecs.umich.edu}}; 1124336Sgblack@eecs.umich.edu 1134336Sgblack@eecs.umich.edulet {{ 1144336Sgblack@eecs.umich.edu class OpType(object): 1154336Sgblack@eecs.umich.edu parser = re.compile(r"(?P<tag>[A-Z][A-Z]*)(?P<size>[a-z][a-z]*)|(r(?P<reg>[A-Za-z0-9][A-Za-z0-9]*))") 1164336Sgblack@eecs.umich.edu def __init__(self, opTypeString): 1174336Sgblack@eecs.umich.edu match = OpType.parser.search(opTypeString) 1184336Sgblack@eecs.umich.edu if match == None: 1194336Sgblack@eecs.umich.edu raise Exception, "Problem parsing operand type %s" % opTypeString 1204336Sgblack@eecs.umich.edu self.reg = match.group("reg") 1214336Sgblack@eecs.umich.edu self.tag = match.group("tag") 1224336Sgblack@eecs.umich.edu self.size = match.group("size") 1234336Sgblack@eecs.umich.edu}}; 1244336Sgblack@eecs.umich.edu 1254336Sgblack@eecs.umich.edulet {{ 1264336Sgblack@eecs.umich.edu 1274336Sgblack@eecs.umich.edu # This function specializes the given piece of code to use a particular 1284336Sgblack@eecs.umich.edu # set of argument types described by "opTypes". These are "implemented" 1294336Sgblack@eecs.umich.edu # in reverse order. 1304336Sgblack@eecs.umich.edu def specializeInst(name, Name, code, opTypes): 1314336Sgblack@eecs.umich.edu opNum = len(opTypes) - 1 1324336Sgblack@eecs.umich.edu while len(opTypes): 1334336Sgblack@eecs.umich.edu # print "Building a composite op with tags", opTypes 1344336Sgblack@eecs.umich.edu # print "And code", code 1354336Sgblack@eecs.umich.edu opNum = len(opTypes) - 1 1364336Sgblack@eecs.umich.edu # A regular expression to find the operand placeholders we're 1374336Sgblack@eecs.umich.edu # interested in. 1384336Sgblack@eecs.umich.edu opRe = re.compile("%%(?P<operandNum>%d)(?=[^0-9]|$)" % opNum) 1394336Sgblack@eecs.umich.edu 1404336Sgblack@eecs.umich.edu # Parse the operand type strign we're working with 1414336Sgblack@eecs.umich.edu print "About to parse tag %s" % opTypes[opNum] 1424336Sgblack@eecs.umich.edu opType = OpType(opTypes[opNum]) 1434336Sgblack@eecs.umich.edu 1444336Sgblack@eecs.umich.edu if opType.reg: 1454336Sgblack@eecs.umich.edu #Figure out what to do with fixed register operands 1464336Sgblack@eecs.umich.edu if opType.reg in ("Ax", "Bx", "Cx", "Dx"): 1474336Sgblack@eecs.umich.edu code = opRe.sub("{INTREG_R%s}" % opType.reg.upper(), code) 1484336Sgblack@eecs.umich.edu elif opType.reg == "Al": 1494336Sgblack@eecs.umich.edu # We need a way to specify register width 1504336Sgblack@eecs.umich.edu code = opRe.sub("{INTREG_RAX}", code) 1514336Sgblack@eecs.umich.edu else: 1524336Sgblack@eecs.umich.edu print "Didn't know how to encode fixed register %s!" % opType.reg 1534336Sgblack@eecs.umich.edu elif opType.tag == None or opType.size == None: 1544336Sgblack@eecs.umich.edu raise Exception, "Problem parsing operand tag: %s" % opType.tag 1554336Sgblack@eecs.umich.edu elif opType.tag in ("C", "D", "G", "P", "S", "T", "V"): 1564336Sgblack@eecs.umich.edu # Use the "reg" field of the ModRM byte to select the register 1574336Sgblack@eecs.umich.edu code = opRe.sub("{(uint8_t)MODRM_REG}", code) 1584336Sgblack@eecs.umich.edu elif opType.tag in ("E", "Q", "W"): 1594336Sgblack@eecs.umich.edu # This might refer to memory or to a register. We need to 1604336Sgblack@eecs.umich.edu # divide it up farther. 1614336Sgblack@eecs.umich.edu regCode = opRe.sub("{(uint8_t)MODRM_RM}", code) 1624336Sgblack@eecs.umich.edu regTypes = copy.copy(opTypes) 1634336Sgblack@eecs.umich.edu regTypes.pop(-1) 1644336Sgblack@eecs.umich.edu # This needs to refer to memory, but we'll fill in the details 1654336Sgblack@eecs.umich.edu # later. It needs to take into account unaligned memory 1664336Sgblack@eecs.umich.edu # addresses. 1674336Sgblack@eecs.umich.edu memCode = opRe.sub("0", code) 1684336Sgblack@eecs.umich.edu memTypes = copy.copy(opTypes) 1694336Sgblack@eecs.umich.edu memTypes.pop(-1) 1704336Sgblack@eecs.umich.edu return doSplitDecode(name, Name, specializeInst, "MODRM_MOD", 1714336Sgblack@eecs.umich.edu {"3" : (regCode, regTypes)}, (memCode, memTypes)) 1724336Sgblack@eecs.umich.edu elif opType.tag in ("I", "J"): 1734336Sgblack@eecs.umich.edu # Immediates are already in the instruction, so don't leave in 1744336Sgblack@eecs.umich.edu # those parameters 1754336Sgblack@eecs.umich.edu code = opRe.sub("", code) 1764336Sgblack@eecs.umich.edu elif opType.tag == "M": 1774336Sgblack@eecs.umich.edu # This needs to refer to memory, but we'll fill in the details 1784336Sgblack@eecs.umich.edu # later. It needs to take into account unaligned memory 1794336Sgblack@eecs.umich.edu # addresses. 1804336Sgblack@eecs.umich.edu code = opRe.sub("0", code) 1814336Sgblack@eecs.umich.edu elif opType.tag in ("PR", "R", "VR"): 1824336Sgblack@eecs.umich.edu # There should probably be a check here to verify that mod 1834336Sgblack@eecs.umich.edu # is equal to 11b 1844336Sgblack@eecs.umich.edu code = opRe.sub("{(uint8_t)MODRM_RM}", code) 1854336Sgblack@eecs.umich.edu else: 1864336Sgblack@eecs.umich.edu raise Exception, "Unrecognized tag %s." % opType.tag 1874336Sgblack@eecs.umich.edu opTypes.pop(-1) 1884336Sgblack@eecs.umich.edu 1894336Sgblack@eecs.umich.edu # At this point, we've built up "code" to have all the necessary extra 1904336Sgblack@eecs.umich.edu # instructions needed to implement whatever types of operands were 1914336Sgblack@eecs.umich.edu # specified. Now we'll assemble it it into a microOp sequence. 1924336Sgblack@eecs.umich.edu ops = assembleMicro(code) 1934336Sgblack@eecs.umich.edu 1944336Sgblack@eecs.umich.edu # Build a macroop to contain the sequence of microops we've 1954336Sgblack@eecs.umich.edu # constructed. The decode block will be used to fill in our 1964336Sgblack@eecs.umich.edu # inner decode structure, and the rest will be concatenated and 1974336Sgblack@eecs.umich.edu # passed back. 1984336Sgblack@eecs.umich.edu return genInst(name, Name, ops) 1994336Sgblack@eecs.umich.edu}}; 2004336Sgblack@eecs.umich.edu 2014336Sgblack@eecs.umich.edu//////////////////////////////////////////////////////////////////// 2024336Sgblack@eecs.umich.edu// 2034336Sgblack@eecs.umich.edu// The microcode assembler 2044336Sgblack@eecs.umich.edu// 2054336Sgblack@eecs.umich.edu 2064336Sgblack@eecs.umich.edulet {{ 2074336Sgblack@eecs.umich.edu class MicroOpStatement(object): 2084309Sgblack@eecs.umich.edu def __init__(self): 2094309Sgblack@eecs.umich.edu self.className = '' 2104309Sgblack@eecs.umich.edu self.label = '' 2114309Sgblack@eecs.umich.edu self.args = [] 2124309Sgblack@eecs.umich.edu 2134323Sgblack@eecs.umich.edu # This converts a list of python bools into 2144323Sgblack@eecs.umich.edu # a comma seperated list of C++ bools. 2154323Sgblack@eecs.umich.edu def microFlagsText(self, vals): 2164323Sgblack@eecs.umich.edu text = "" 2174323Sgblack@eecs.umich.edu for val in vals: 2184323Sgblack@eecs.umich.edu if val: 2194323Sgblack@eecs.umich.edu text += ", true" 2204323Sgblack@eecs.umich.edu else: 2214323Sgblack@eecs.umich.edu text += ", false" 2224323Sgblack@eecs.umich.edu return text 2234323Sgblack@eecs.umich.edu 2244323Sgblack@eecs.umich.edu def getAllocator(self, *microFlags): 2254309Sgblack@eecs.umich.edu args = '' 2264309Sgblack@eecs.umich.edu for arg in self.args: 2274309Sgblack@eecs.umich.edu if arg.has_key("operandConst"): 2284309Sgblack@eecs.umich.edu args += ", %s" % arg["operandConst"] 2294309Sgblack@eecs.umich.edu elif arg.has_key("operandCode"): 2304309Sgblack@eecs.umich.edu args += ", %s" % arg["operandCode"] 2314309Sgblack@eecs.umich.edu elif arg.has_key("operandLabel"): 2324323Sgblack@eecs.umich.edu raise Exception, "Found a label while creating allocator string." 2334309Sgblack@eecs.umich.edu else: 2344323Sgblack@eecs.umich.edu raise Exception, "Unrecognized operand type." 2354323Sgblack@eecs.umich.edu return 'new %s(machInst%s%s)' % (self.className, self.microFlagsText(microFlags), args) 2364323Sgblack@eecs.umich.edu}}; 2374309Sgblack@eecs.umich.edu 2384323Sgblack@eecs.umich.edulet {{ 2394323Sgblack@eecs.umich.edu def buildLabelDict(ops): 2404323Sgblack@eecs.umich.edu labels = {} 2414323Sgblack@eecs.umich.edu micropc = 0 2424323Sgblack@eecs.umich.edu for op in ops: 2434323Sgblack@eecs.umich.edu if op.label: 2444323Sgblack@eecs.umich.edu labels[op.label] = count 2454323Sgblack@eecs.umich.edu micropc += 1 2464323Sgblack@eecs.umich.edu return labels 2474336Sgblack@eecs.umich.edu}}; 2484309Sgblack@eecs.umich.edu 2494336Sgblack@eecs.umich.edulet{{ 2504309Sgblack@eecs.umich.edu def assembleMicro(code): 2514309Sgblack@eecs.umich.edu # This function takes in a block of microcode assembly and returns 2524309Sgblack@eecs.umich.edu # a python list of objects which describe it. 2534309Sgblack@eecs.umich.edu 2544309Sgblack@eecs.umich.edu # Keep this around in case we need it later 2554309Sgblack@eecs.umich.edu orig_code = code 2564309Sgblack@eecs.umich.edu # A list of the statements we've found thus far 2574309Sgblack@eecs.umich.edu statements = [] 2584309Sgblack@eecs.umich.edu 2594309Sgblack@eecs.umich.edu # Regular expressions to pull each piece of the statement out at a 2604309Sgblack@eecs.umich.edu # time. Each expression expects the thing it's looking for to be at 2614309Sgblack@eecs.umich.edu # the beginning of the line, so the previous component is stripped 2624309Sgblack@eecs.umich.edu # before continuing. 2634309Sgblack@eecs.umich.edu labelRe = re.compile(r'^[ \t]*(?P<label>[a-zA-Z_]\w*)[ \t]:') 2644309Sgblack@eecs.umich.edu lineRe = re.compile(r'^(?P<line>[^\n][^\n]*)$') 2654309Sgblack@eecs.umich.edu classRe = re.compile(r'^[ \t]*(?P<className>[a-zA-Z_]\w*)') 2664309Sgblack@eecs.umich.edu # This recognizes three different flavors of operands: 2674309Sgblack@eecs.umich.edu # 1. Raw decimal numbers composed of digits between 0 and 9 2684309Sgblack@eecs.umich.edu # 2. Code beginning with "{" and continuing until the first "}" 2694309Sgblack@eecs.umich.edu # ^ This one might need revising 2704309Sgblack@eecs.umich.edu # 3. A label, which starts with a capital or small letter, or 2714309Sgblack@eecs.umich.edu # underscore, which is optionally followed by a sequence of 2724309Sgblack@eecs.umich.edu # capital or small letters, underscores, or digts between 0 and 9 2734309Sgblack@eecs.umich.edu opRe = re.compile( \ 2744309Sgblack@eecs.umich.edu r'^[ \t]*((?P<operandLabel>[a-zA-Z_]\w*)|(?P<operandConst>[0-9][0-9]*)|(\{(?P<operandCode>[^}]*)\}))') 2754309Sgblack@eecs.umich.edu lineMatch = lineRe.search(code) 2764309Sgblack@eecs.umich.edu while lineMatch != None: 2774309Sgblack@eecs.umich.edu statement = MicroOpStatement() 2784309Sgblack@eecs.umich.edu # Get a line and seperate it from the rest of the code 2794309Sgblack@eecs.umich.edu line = lineMatch.group("line") 2804323Sgblack@eecs.umich.edu orig_line = line 2814323Sgblack@eecs.umich.edu # print "Parsing line %s" % line 2824309Sgblack@eecs.umich.edu code = lineRe.sub('', code, 1) 2834309Sgblack@eecs.umich.edu 2844309Sgblack@eecs.umich.edu # Find the label, if any 2854309Sgblack@eecs.umich.edu labelMatch = labelRe.search(line) 2864309Sgblack@eecs.umich.edu if labelMatch != None: 2874309Sgblack@eecs.umich.edu statement.label = labelMatch.group("label") 2884323Sgblack@eecs.umich.edu # print "Found label %s." % statement.label 2894309Sgblack@eecs.umich.edu # Clear the label from the statement 2904309Sgblack@eecs.umich.edu line = labelRe.sub('', line, 1) 2914309Sgblack@eecs.umich.edu 2924309Sgblack@eecs.umich.edu # Find the class name which is roughly equivalent to the op name 2934309Sgblack@eecs.umich.edu classMatch = classRe.search(line) 2944309Sgblack@eecs.umich.edu if classMatch == None: 2954323Sgblack@eecs.umich.edu raise Exception, "Couldn't find class name in statement: %s" \ 2964323Sgblack@eecs.umich.edu % orig_line 2974309Sgblack@eecs.umich.edu else: 2984309Sgblack@eecs.umich.edu statement.className = classMatch.group("className") 2994323Sgblack@eecs.umich.edu # print "Found class name %s." % statement.className 3004309Sgblack@eecs.umich.edu 3014309Sgblack@eecs.umich.edu # Clear the class name from the statement 3024309Sgblack@eecs.umich.edu line = classRe.sub('', line, 1) 3034309Sgblack@eecs.umich.edu 3044309Sgblack@eecs.umich.edu #Find as many arguments as you can 3054309Sgblack@eecs.umich.edu statement.args = [] 3064309Sgblack@eecs.umich.edu opMatch = opRe.search(line) 3074309Sgblack@eecs.umich.edu while opMatch is not None: 3084309Sgblack@eecs.umich.edu statement.args.append({}) 3094309Sgblack@eecs.umich.edu # args is a list of dicts which collect different 3104309Sgblack@eecs.umich.edu # representations of operand values. Different forms might be 3114309Sgblack@eecs.umich.edu # needed in different places, for instance to replace a label 3124309Sgblack@eecs.umich.edu # with an offset. 3134309Sgblack@eecs.umich.edu for opType in ("operandLabel", "operandConst", "operandCode"): 3144309Sgblack@eecs.umich.edu if opMatch.group(opType): 3154309Sgblack@eecs.umich.edu statement.args[-1][opType] = opMatch.group(opType) 3164309Sgblack@eecs.umich.edu if len(statement.args[-1]) == 0: 3174323Sgblack@eecs.umich.edu print "Problem parsing operand in statement: %s" \ 3184323Sgblack@eecs.umich.edu % orig_line 3194309Sgblack@eecs.umich.edu line = opRe.sub('', line, 1) 3204323Sgblack@eecs.umich.edu # print "Found operand %s." % statement.args[-1] 3214309Sgblack@eecs.umich.edu opMatch = opRe.search(line) 3224323Sgblack@eecs.umich.edu # print "Found operands", statement.args 3234309Sgblack@eecs.umich.edu 3244309Sgblack@eecs.umich.edu # Add this statement to our collection 3254309Sgblack@eecs.umich.edu statements.append(statement) 3264309Sgblack@eecs.umich.edu 3274309Sgblack@eecs.umich.edu # Get the next line 3284309Sgblack@eecs.umich.edu lineMatch = lineRe.search(code) 3294323Sgblack@eecs.umich.edu 3304323Sgblack@eecs.umich.edu # Decode the labels into displacements 3314323Sgblack@eecs.umich.edu labels = buildLabelDict(statements) 3324323Sgblack@eecs.umich.edu micropc = 0 3334323Sgblack@eecs.umich.edu for statement in statements: 3344323Sgblack@eecs.umich.edu for arg in statement.args: 3354323Sgblack@eecs.umich.edu if arg.has_key("operandLabel"): 3364323Sgblack@eecs.umich.edu if not labels.has_key(arg["operandLabel"]): 3374323Sgblack@eecs.umich.edu raise Exception, "Unrecognized label: %s." % arg["operandLabel"] 3384323Sgblack@eecs.umich.edu # This is assuming that intra microcode branches go to 3394323Sgblack@eecs.umich.edu # the next micropc + displacement, or 3404323Sgblack@eecs.umich.edu # micropc + 1 + displacement. 3414323Sgblack@eecs.umich.edu arg["operandConst"] = labels[arg["operandLabel"]] - micropc - 1 3424323Sgblack@eecs.umich.edu micropc += 1 3434309Sgblack@eecs.umich.edu return statements 3444309Sgblack@eecs.umich.edu}}; 345