micro_asm.py revision 4483
14483Sgblack@eecs.umich.edu# Copyright (c) 2003-2005 The Regents of The University of Michigan 24483Sgblack@eecs.umich.edu# All rights reserved. 34483Sgblack@eecs.umich.edu# 44483Sgblack@eecs.umich.edu# Redistribution and use in source and binary forms, with or without 54483Sgblack@eecs.umich.edu# modification, are permitted provided that the following conditions are 64483Sgblack@eecs.umich.edu# met: redistributions of source code must retain the above copyright 74483Sgblack@eecs.umich.edu# notice, this list of conditions and the following disclaimer; 84483Sgblack@eecs.umich.edu# redistributions in binary form must reproduce the above copyright 94483Sgblack@eecs.umich.edu# notice, this list of conditions and the following disclaimer in the 104483Sgblack@eecs.umich.edu# documentation and/or other materials provided with the distribution; 114483Sgblack@eecs.umich.edu# neither the name of the copyright holders nor the names of its 124483Sgblack@eecs.umich.edu# contributors may be used to endorse or promote products derived from 134483Sgblack@eecs.umich.edu# this software without specific prior written permission. 144483Sgblack@eecs.umich.edu# 154483Sgblack@eecs.umich.edu# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 164483Sgblack@eecs.umich.edu# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 174483Sgblack@eecs.umich.edu# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 184483Sgblack@eecs.umich.edu# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 194483Sgblack@eecs.umich.edu# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 204483Sgblack@eecs.umich.edu# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 214483Sgblack@eecs.umich.edu# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 224483Sgblack@eecs.umich.edu# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 234483Sgblack@eecs.umich.edu# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 244483Sgblack@eecs.umich.edu# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 254483Sgblack@eecs.umich.edu# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 264483Sgblack@eecs.umich.edu# 274483Sgblack@eecs.umich.edu# Authors: Gabe Black 284483Sgblack@eecs.umich.edu 294483Sgblack@eecs.umich.eduimport os 304483Sgblack@eecs.umich.eduimport sys 314483Sgblack@eecs.umich.eduimport re 324483Sgblack@eecs.umich.eduimport string 334483Sgblack@eecs.umich.eduimport traceback 344483Sgblack@eecs.umich.edu# get type names 354483Sgblack@eecs.umich.edufrom types import * 364483Sgblack@eecs.umich.edu 374483Sgblack@eecs.umich.edu# Prepend the directory where the PLY lex & yacc modules are found 384483Sgblack@eecs.umich.edu# to the search path. 394483Sgblack@eecs.umich.edusys.path[0:0] = [os.environ['M5_PLY']] 404483Sgblack@eecs.umich.edu 414483Sgblack@eecs.umich.edufrom ply import lex 424483Sgblack@eecs.umich.edufrom ply import yacc 434483Sgblack@eecs.umich.edu 444483Sgblack@eecs.umich.edu########################################################################## 454483Sgblack@eecs.umich.edu# 464483Sgblack@eecs.umich.edu# Base classes for use outside of the assembler 474483Sgblack@eecs.umich.edu# 484483Sgblack@eecs.umich.edu########################################################################## 494483Sgblack@eecs.umich.edu 504483Sgblack@eecs.umich.educlass Micro_Container(object): 514483Sgblack@eecs.umich.edu def __init__(self, name): 524483Sgblack@eecs.umich.edu self.microops = [] 534483Sgblack@eecs.umich.edu self.name = name 544483Sgblack@eecs.umich.edu self.directives = {} 554483Sgblack@eecs.umich.edu self.micro_classes = {} 564483Sgblack@eecs.umich.edu self.labels = {} 574483Sgblack@eecs.umich.edu 584483Sgblack@eecs.umich.edu def add_microop(self, microop): 594483Sgblack@eecs.umich.edu self.microops.append(microop) 604483Sgblack@eecs.umich.edu 614483Sgblack@eecs.umich.edu def __str__(self): 624483Sgblack@eecs.umich.edu string = "%s:\n" % self.name 634483Sgblack@eecs.umich.edu for microop in self.microops: 644483Sgblack@eecs.umich.edu string += " %s\n" % microop 654483Sgblack@eecs.umich.edu return string 664483Sgblack@eecs.umich.edu 674483Sgblack@eecs.umich.educlass Macroop(Micro_Container): 684483Sgblack@eecs.umich.edu pass 694483Sgblack@eecs.umich.edu 704483Sgblack@eecs.umich.educlass Rom(Micro_Container): 714483Sgblack@eecs.umich.edu def __init__(self, name): 724483Sgblack@eecs.umich.edu super(Rom, self).__init__(name) 734483Sgblack@eecs.umich.edu self.externs = {} 744483Sgblack@eecs.umich.edu 754483Sgblack@eecs.umich.edu########################################################################## 764483Sgblack@eecs.umich.edu# 774483Sgblack@eecs.umich.edu# Support classes 784483Sgblack@eecs.umich.edu# 794483Sgblack@eecs.umich.edu########################################################################## 804483Sgblack@eecs.umich.edu 814483Sgblack@eecs.umich.educlass Label(object): 824483Sgblack@eecs.umich.edu def __init__(self): 834483Sgblack@eecs.umich.edu self.extern = False 844483Sgblack@eecs.umich.edu self.name = "" 854483Sgblack@eecs.umich.edu 864483Sgblack@eecs.umich.educlass Block(object): 874483Sgblack@eecs.umich.edu def __init__(self): 884483Sgblack@eecs.umich.edu self.statements = [] 894483Sgblack@eecs.umich.edu 904483Sgblack@eecs.umich.educlass Statement(object): 914483Sgblack@eecs.umich.edu def __init__(self): 924483Sgblack@eecs.umich.edu self.is_microop = False 934483Sgblack@eecs.umich.edu self.is_directive = False 944483Sgblack@eecs.umich.edu 954483Sgblack@eecs.umich.educlass Microop(Statement): 964483Sgblack@eecs.umich.edu def __init__(self): 974483Sgblack@eecs.umich.edu super(Microop, self).__init__() 984483Sgblack@eecs.umich.edu self.mnemonic = "" 994483Sgblack@eecs.umich.edu self.labels = [] 1004483Sgblack@eecs.umich.edu self.is_microop = True 1014483Sgblack@eecs.umich.edu self.params = "" 1024483Sgblack@eecs.umich.edu 1034483Sgblack@eecs.umich.educlass Directive(Statement): 1044483Sgblack@eecs.umich.edu def __init__(self): 1054483Sgblack@eecs.umich.edu super(Directive, self).__init__() 1064483Sgblack@eecs.umich.edu self.name = "" 1074483Sgblack@eecs.umich.edu self.is_directive = True 1084483Sgblack@eecs.umich.edu 1094483Sgblack@eecs.umich.edu########################################################################## 1104483Sgblack@eecs.umich.edu# 1114483Sgblack@eecs.umich.edu# Functions that handle common tasks 1124483Sgblack@eecs.umich.edu# 1134483Sgblack@eecs.umich.edu########################################################################## 1144483Sgblack@eecs.umich.edu 1154483Sgblack@eecs.umich.edudef print_error(message): 1164483Sgblack@eecs.umich.edu print 1174483Sgblack@eecs.umich.edu print "*** %s" % message 1184483Sgblack@eecs.umich.edu print 1194483Sgblack@eecs.umich.edu 1204483Sgblack@eecs.umich.edudef handle_statement(parser, container, statement): 1214483Sgblack@eecs.umich.edu if statement.is_microop: 1224483Sgblack@eecs.umich.edu try: 1234483Sgblack@eecs.umich.edu microop = eval('parser.microops[statement.mnemonic](%s)' % 1244483Sgblack@eecs.umich.edu statement.params) 1254483Sgblack@eecs.umich.edu except: 1264483Sgblack@eecs.umich.edu print_error("Error creating microop object.") 1274483Sgblack@eecs.umich.edu raise 1284483Sgblack@eecs.umich.edu try: 1294483Sgblack@eecs.umich.edu for label in statement.labels: 1304483Sgblack@eecs.umich.edu container.labels[label.name] = microop 1314483Sgblack@eecs.umich.edu if label.extern: 1324483Sgblack@eecs.umich.edu container.externs[label.name] = microop 1334483Sgblack@eecs.umich.edu container.add_microop(microop) 1344483Sgblack@eecs.umich.edu except: 1354483Sgblack@eecs.umich.edu print_error("Error adding microop.") 1364483Sgblack@eecs.umich.edu raise 1374483Sgblack@eecs.umich.edu elif statement.is_directive: 1384483Sgblack@eecs.umich.edu try: 1394483Sgblack@eecs.umich.edu eval('container.%s()' % statement.name) 1404483Sgblack@eecs.umich.edu except: 1414483Sgblack@eecs.umich.edu print_error("Error executing directive.") 1424483Sgblack@eecs.umich.edu print container.directives 1434483Sgblack@eecs.umich.edu raise 1444483Sgblack@eecs.umich.edu else: 1454483Sgblack@eecs.umich.edu raise Exception, "Didn't recognize the type of statement", statement 1464483Sgblack@eecs.umich.edu 1474483Sgblack@eecs.umich.edu########################################################################## 1484483Sgblack@eecs.umich.edu# 1494483Sgblack@eecs.umich.edu# Lexer specification 1504483Sgblack@eecs.umich.edu# 1514483Sgblack@eecs.umich.edu########################################################################## 1524483Sgblack@eecs.umich.edu 1534483Sgblack@eecs.umich.edu# Error handler. Just call exit. Output formatted to work under 1544483Sgblack@eecs.umich.edu# Emacs compile-mode. Optional 'print_traceback' arg, if set to True, 1554483Sgblack@eecs.umich.edu# prints a Python stack backtrace too (can be handy when trying to 1564483Sgblack@eecs.umich.edu# debug the parser itself). 1574483Sgblack@eecs.umich.edudef error(lineno, string, print_traceback = False): 1584483Sgblack@eecs.umich.edu # Print a Python stack backtrace if requested. 1594483Sgblack@eecs.umich.edu if (print_traceback): 1604483Sgblack@eecs.umich.edu traceback.print_exc() 1614483Sgblack@eecs.umich.edu if lineno != 0: 1624483Sgblack@eecs.umich.edu line_str = "%d:" % lineno 1634483Sgblack@eecs.umich.edu else: 1644483Sgblack@eecs.umich.edu line_str = "" 1654483Sgblack@eecs.umich.edu sys.exit("%s %s" % (line_str, string)) 1664483Sgblack@eecs.umich.edu 1674483Sgblack@eecs.umich.edureserved = ('DEF', 'MACROOP', 'ROM', 'EXTERN') 1684483Sgblack@eecs.umich.edu 1694483Sgblack@eecs.umich.edutokens = reserved + ( 1704483Sgblack@eecs.umich.edu # identifier 1714483Sgblack@eecs.umich.edu 'ID', 1724483Sgblack@eecs.umich.edu # arguments for microops and directives 1734483Sgblack@eecs.umich.edu 'PARAMS', 1744483Sgblack@eecs.umich.edu 1754483Sgblack@eecs.umich.edu 'LPAREN', 'RPAREN', 1764483Sgblack@eecs.umich.edu 'LBRACE', 'RBRACE', 1774483Sgblack@eecs.umich.edu #'COMMA', 1784483Sgblack@eecs.umich.edu 'COLON', 'SEMI', 'DOT', 1794483Sgblack@eecs.umich.edu 'NEWLINE' 1804483Sgblack@eecs.umich.edu ) 1814483Sgblack@eecs.umich.edu 1824483Sgblack@eecs.umich.edu# New lines are ignored at the top level, but they end statements in the 1834483Sgblack@eecs.umich.edu# assembler 1844483Sgblack@eecs.umich.edustates = ( 1854483Sgblack@eecs.umich.edu ('asm', 'exclusive'), 1864483Sgblack@eecs.umich.edu ('params', 'exclusive'), 1874483Sgblack@eecs.umich.edu) 1884483Sgblack@eecs.umich.edu 1894483Sgblack@eecs.umich.edureserved_map = { } 1904483Sgblack@eecs.umich.edufor r in reserved: 1914483Sgblack@eecs.umich.edu reserved_map[r.lower()] = r 1924483Sgblack@eecs.umich.edu 1934483Sgblack@eecs.umich.edudef t_params_COLON(t): 1944483Sgblack@eecs.umich.edu r':' 1954483Sgblack@eecs.umich.edu t.lexer.begin('asm') 1964483Sgblack@eecs.umich.edu return t 1974483Sgblack@eecs.umich.edu 1984483Sgblack@eecs.umich.edudef t_asm_ID(t): 1994483Sgblack@eecs.umich.edu r'[A-Za-z_]\w*' 2004483Sgblack@eecs.umich.edu t.type = reserved_map.get(t.value, 'ID') 2014483Sgblack@eecs.umich.edu t.lexer.begin('params') 2024483Sgblack@eecs.umich.edu return t 2034483Sgblack@eecs.umich.edu 2044483Sgblack@eecs.umich.edudef t_ANY_ID(t): 2054483Sgblack@eecs.umich.edu r'[A-Za-z_]\w*' 2064483Sgblack@eecs.umich.edu t.type = reserved_map.get(t.value, 'ID') 2074483Sgblack@eecs.umich.edu return t 2084483Sgblack@eecs.umich.edu 2094483Sgblack@eecs.umich.edudef t_params_PARAMS(t): 2104483Sgblack@eecs.umich.edu r'([^\n;]|((?<=\\)[\n;]))+' 2114483Sgblack@eecs.umich.edu t.lineno += t.value.count('\n') 2124483Sgblack@eecs.umich.edu t.lexer.begin('asm') 2134483Sgblack@eecs.umich.edu return t 2144483Sgblack@eecs.umich.edu 2154483Sgblack@eecs.umich.edudef t_INITIAL_LBRACE(t): 2164483Sgblack@eecs.umich.edu r'\{' 2174483Sgblack@eecs.umich.edu t.lexer.begin('asm') 2184483Sgblack@eecs.umich.edu return t 2194483Sgblack@eecs.umich.edu 2204483Sgblack@eecs.umich.edudef t_asm_RBRACE(t): 2214483Sgblack@eecs.umich.edu r'\}' 2224483Sgblack@eecs.umich.edu t.lexer.begin('INITIAL') 2234483Sgblack@eecs.umich.edu return t 2244483Sgblack@eecs.umich.edu 2254483Sgblack@eecs.umich.edudef t_INITIAL_NEWLINE(t): 2264483Sgblack@eecs.umich.edu r'\n+' 2274483Sgblack@eecs.umich.edu t.lineno += t.value.count('\n') 2284483Sgblack@eecs.umich.edu 2294483Sgblack@eecs.umich.edudef t_asm_NEWLINE(t): 2304483Sgblack@eecs.umich.edu r'\n+' 2314483Sgblack@eecs.umich.edu t.lineno += t.value.count('\n') 2324483Sgblack@eecs.umich.edu return t 2334483Sgblack@eecs.umich.edu 2344483Sgblack@eecs.umich.edudef t_params_NEWLINE(t): 2354483Sgblack@eecs.umich.edu r'\n+' 2364483Sgblack@eecs.umich.edu t.lineno += t.value.count('\n') 2374483Sgblack@eecs.umich.edu t.lexer.begin('asm') 2384483Sgblack@eecs.umich.edu return t 2394483Sgblack@eecs.umich.edu 2404483Sgblack@eecs.umich.edudef t_params_SEMI(t): 2414483Sgblack@eecs.umich.edu r';' 2424483Sgblack@eecs.umich.edu t.lexer.begin('asm') 2434483Sgblack@eecs.umich.edu return t 2444483Sgblack@eecs.umich.edu 2454483Sgblack@eecs.umich.edu# Basic regular expressions to pick out simple tokens 2464483Sgblack@eecs.umich.edut_ANY_LPAREN = r'\(' 2474483Sgblack@eecs.umich.edut_ANY_RPAREN = r'\)' 2484483Sgblack@eecs.umich.edu#t_COMMA = r',' 2494483Sgblack@eecs.umich.edut_ANY_SEMI = r';' 2504483Sgblack@eecs.umich.edut_ANY_DOT = r'\.' 2514483Sgblack@eecs.umich.edu 2524483Sgblack@eecs.umich.edut_ANY_ignore = ' \t\x0c' 2534483Sgblack@eecs.umich.edu 2544483Sgblack@eecs.umich.edudef t_ANY_error(t): 2554483Sgblack@eecs.umich.edu error(t.lineno, "illegal character '%s'" % t.value[0]) 2564483Sgblack@eecs.umich.edu t.skip(1) 2574483Sgblack@eecs.umich.edu 2584483Sgblack@eecs.umich.edu########################################################################## 2594483Sgblack@eecs.umich.edu# 2604483Sgblack@eecs.umich.edu# Parser specification 2614483Sgblack@eecs.umich.edu# 2624483Sgblack@eecs.umich.edu########################################################################## 2634483Sgblack@eecs.umich.edu 2644483Sgblack@eecs.umich.edu# Start symbol for a file which may have more than one macroop or rom 2654483Sgblack@eecs.umich.edu# specification. 2664483Sgblack@eecs.umich.edudef p_file(t): 2674483Sgblack@eecs.umich.edu 'file : opt_rom_or_macros' 2684483Sgblack@eecs.umich.edu 2694483Sgblack@eecs.umich.edudef p_opt_rom_or_macros_0(t): 2704483Sgblack@eecs.umich.edu 'opt_rom_or_macros : ' 2714483Sgblack@eecs.umich.edu 2724483Sgblack@eecs.umich.edudef p_opt_rom_or_macros_1(t): 2734483Sgblack@eecs.umich.edu 'opt_rom_or_macros : rom_or_macros' 2744483Sgblack@eecs.umich.edu 2754483Sgblack@eecs.umich.edudef p_rom_or_macros_0(t): 2764483Sgblack@eecs.umich.edu 'rom_or_macros : rom_or_macro' 2774483Sgblack@eecs.umich.edu 2784483Sgblack@eecs.umich.edudef p_rom_or_macros_1(t): 2794483Sgblack@eecs.umich.edu 'rom_or_macros : rom_or_macros rom_or_macro' 2804483Sgblack@eecs.umich.edu 2814483Sgblack@eecs.umich.edudef p_rom_or_macro_0(t): 2824483Sgblack@eecs.umich.edu '''rom_or_macro : rom_block''' 2834483Sgblack@eecs.umich.edu 2844483Sgblack@eecs.umich.edudef p_rom_or_macro_1(t): 2854483Sgblack@eecs.umich.edu '''rom_or_macro : macroop_def''' 2864483Sgblack@eecs.umich.edu 2874483Sgblack@eecs.umich.edu# A block of statements 2884483Sgblack@eecs.umich.edudef p_block(t): 2894483Sgblack@eecs.umich.edu 'block : LBRACE statements RBRACE' 2904483Sgblack@eecs.umich.edu block = Block() 2914483Sgblack@eecs.umich.edu block.statements = t[2] 2924483Sgblack@eecs.umich.edu t[0] = block 2934483Sgblack@eecs.umich.edu 2944483Sgblack@eecs.umich.edu# Defines a section of microcode that should go in the current ROM 2954483Sgblack@eecs.umich.edudef p_rom_block(t): 2964483Sgblack@eecs.umich.edu 'rom_block : DEF ROM block SEMI' 2974483Sgblack@eecs.umich.edu for statement in t[3].statements: 2984483Sgblack@eecs.umich.edu handle_statement(t.parser, t.parser.rom, statement) 2994483Sgblack@eecs.umich.edu t[0] = t.parser.rom 3004483Sgblack@eecs.umich.edu 3014483Sgblack@eecs.umich.edu# Defines a macroop that jumps to an external label in the ROM 3024483Sgblack@eecs.umich.edudef p_macroop_def_0(t): 3034483Sgblack@eecs.umich.edu 'macroop_def : DEF MACROOP LPAREN ID RPAREN SEMI' 3044483Sgblack@eecs.umich.edu t[0] = t[4] 3054483Sgblack@eecs.umich.edu 3064483Sgblack@eecs.umich.edu# Defines a macroop that is combinationally generated 3074483Sgblack@eecs.umich.edudef p_macroop_def_1(t): 3084483Sgblack@eecs.umich.edu 'macroop_def : DEF MACROOP ID block SEMI' 3094483Sgblack@eecs.umich.edu try: 3104483Sgblack@eecs.umich.edu curop = t.parser.macro_type(t[3]) 3114483Sgblack@eecs.umich.edu except TypeError: 3124483Sgblack@eecs.umich.edu print_error("Error creating macroop object.") 3134483Sgblack@eecs.umich.edu raise 3144483Sgblack@eecs.umich.edu for statement in t[4].statements: 3154483Sgblack@eecs.umich.edu handle_statement(t.parser, curop, statement) 3164483Sgblack@eecs.umich.edu t.parser.macroops.append(curop) 3174483Sgblack@eecs.umich.edu 3184483Sgblack@eecs.umich.edudef p_statements_0(t): 3194483Sgblack@eecs.umich.edu 'statements : statement' 3204483Sgblack@eecs.umich.edu if t[1]: 3214483Sgblack@eecs.umich.edu t[0] = [t[1]] 3224483Sgblack@eecs.umich.edu else: 3234483Sgblack@eecs.umich.edu t[0] = [] 3244483Sgblack@eecs.umich.edu 3254483Sgblack@eecs.umich.edudef p_statements_1(t): 3264483Sgblack@eecs.umich.edu 'statements : statements statement' 3274483Sgblack@eecs.umich.edu if t[2]: 3284483Sgblack@eecs.umich.edu t[1].append(t[2]) 3294483Sgblack@eecs.umich.edu t[0] = t[1] 3304483Sgblack@eecs.umich.edu 3314483Sgblack@eecs.umich.edudef p_statement(t): 3324483Sgblack@eecs.umich.edu 'statement : content_of_statement end_of_statement' 3334483Sgblack@eecs.umich.edu t[0] = t[1] 3344483Sgblack@eecs.umich.edu 3354483Sgblack@eecs.umich.edu# A statement can be a microop or an assembler directive 3364483Sgblack@eecs.umich.edudef p_content_of_statement_0(t): 3374483Sgblack@eecs.umich.edu '''content_of_statement : microop 3384483Sgblack@eecs.umich.edu | directive''' 3394483Sgblack@eecs.umich.edu t[0] = t[1] 3404483Sgblack@eecs.umich.edu 3414483Sgblack@eecs.umich.edudef p_content_of_statement_1(t): 3424483Sgblack@eecs.umich.edu 'content_of_statement : ' 3434483Sgblack@eecs.umich.edu pass 3444483Sgblack@eecs.umich.edu 3454483Sgblack@eecs.umich.edu# Statements are ended by newlines or a semi colon 3464483Sgblack@eecs.umich.edudef p_end_of_statement(t): 3474483Sgblack@eecs.umich.edu '''end_of_statement : NEWLINE 3484483Sgblack@eecs.umich.edu | SEMI''' 3494483Sgblack@eecs.umich.edu pass 3504483Sgblack@eecs.umich.edu 3514483Sgblack@eecs.umich.edudef p_microop_0(t): 3524483Sgblack@eecs.umich.edu 'microop : labels ID' 3534483Sgblack@eecs.umich.edu microop = Microop() 3544483Sgblack@eecs.umich.edu microop.labels = t[1] 3554483Sgblack@eecs.umich.edu microop.mnemonic = t[2] 3564483Sgblack@eecs.umich.edu t[0] = microop 3574483Sgblack@eecs.umich.edu 3584483Sgblack@eecs.umich.edudef p_microop_1(t): 3594483Sgblack@eecs.umich.edu 'microop : ID' 3604483Sgblack@eecs.umich.edu microop = Microop() 3614483Sgblack@eecs.umich.edu microop.mnemonic = t[1] 3624483Sgblack@eecs.umich.edu t[0] = microop 3634483Sgblack@eecs.umich.edu 3644483Sgblack@eecs.umich.edudef p_microop_2(t): 3654483Sgblack@eecs.umich.edu 'microop : labels ID PARAMS' 3664483Sgblack@eecs.umich.edu microop = Microop() 3674483Sgblack@eecs.umich.edu microop.labels = t[1] 3684483Sgblack@eecs.umich.edu microop.mnemonic = t[2] 3694483Sgblack@eecs.umich.edu microop.params = t[3] 3704483Sgblack@eecs.umich.edu t[0] = microop 3714483Sgblack@eecs.umich.edu 3724483Sgblack@eecs.umich.edudef p_microop_3(t): 3734483Sgblack@eecs.umich.edu 'microop : ID PARAMS' 3744483Sgblack@eecs.umich.edu microop = Microop() 3754483Sgblack@eecs.umich.edu microop.mnemonic = t[1] 3764483Sgblack@eecs.umich.edu microop.params = t[2] 3774483Sgblack@eecs.umich.edu t[0] = microop 3784483Sgblack@eecs.umich.edu 3794483Sgblack@eecs.umich.edudef p_labels_0(t): 3804483Sgblack@eecs.umich.edu 'labels : label' 3814483Sgblack@eecs.umich.edu t[0] = [t[1]] 3824483Sgblack@eecs.umich.edu 3834483Sgblack@eecs.umich.edudef p_labels_1(t): 3844483Sgblack@eecs.umich.edu 'labels : labels label' 3854483Sgblack@eecs.umich.edu t[1].append(t[2]) 3864483Sgblack@eecs.umich.edu t[0] = t[1] 3874483Sgblack@eecs.umich.edu 3884483Sgblack@eecs.umich.edudef p_label_0(t): 3894483Sgblack@eecs.umich.edu 'label : ID COLON' 3904483Sgblack@eecs.umich.edu label = Label() 3914483Sgblack@eecs.umich.edu label.is_extern = False 3924483Sgblack@eecs.umich.edu label.text = t[1] 3934483Sgblack@eecs.umich.edu t[0] = label 3944483Sgblack@eecs.umich.edu 3954483Sgblack@eecs.umich.edudef p_label_1(t): 3964483Sgblack@eecs.umich.edu 'label : EXTERN ID COLON' 3974483Sgblack@eecs.umich.edu label = Label() 3984483Sgblack@eecs.umich.edu label.is_extern = True 3994483Sgblack@eecs.umich.edu label.text = t[2] 4004483Sgblack@eecs.umich.edu t[0] = label 4014483Sgblack@eecs.umich.edu 4024483Sgblack@eecs.umich.edudef p_directive(t): 4034483Sgblack@eecs.umich.edu 'directive : DOT ID' 4044483Sgblack@eecs.umich.edu directive = Directive() 4054483Sgblack@eecs.umich.edu directive.name = t[2] 4064483Sgblack@eecs.umich.edu t[0] = directive 4074483Sgblack@eecs.umich.edu 4084483Sgblack@eecs.umich.edu# Parse error handler. Note that the argument here is the offending 4094483Sgblack@eecs.umich.edu# *token*, not a grammar symbol (hence the need to use t.value) 4104483Sgblack@eecs.umich.edudef p_error(t): 4114483Sgblack@eecs.umich.edu if t: 4124483Sgblack@eecs.umich.edu error(t.lineno, "syntax error at '%s'" % t.value) 4134483Sgblack@eecs.umich.edu else: 4144483Sgblack@eecs.umich.edu error(0, "unknown syntax error", True) 4154483Sgblack@eecs.umich.edu 4164483Sgblack@eecs.umich.educlass MicroAssembler(object): 4174483Sgblack@eecs.umich.edu 4184483Sgblack@eecs.umich.edu def __init__(self, macro_type, microops, rom): 4194483Sgblack@eecs.umich.edu self.lexer = lex.lex() 4204483Sgblack@eecs.umich.edu self.parser = yacc.yacc() 4214483Sgblack@eecs.umich.edu self.parser.macro_type = macro_type 4224483Sgblack@eecs.umich.edu self.parser.macroops = [] 4234483Sgblack@eecs.umich.edu self.parser.microops = microops 4244483Sgblack@eecs.umich.edu self.parser.rom = rom 4254483Sgblack@eecs.umich.edu 4264483Sgblack@eecs.umich.edu def assemble(self, asm): 4274483Sgblack@eecs.umich.edu self.parser.parse(asm, lexer=self.lexer) 4284483Sgblack@eecs.umich.edu for macroop in self.parser.macroops: 4294483Sgblack@eecs.umich.edu print macroop 4304483Sgblack@eecs.umich.edu print self.parser.rom 4314483Sgblack@eecs.umich.edu macroops = self.parser.macroops 4324483Sgblack@eecs.umich.edu self.parser.macroops = [] 4334483Sgblack@eecs.umich.edu return macroops 434