16657Snate@binkert.org# Copyright (c) 1999-2008 Mark D. Hill and David A. Wood 26657Snate@binkert.org# Copyright (c) 2009 The Hewlett-Packard Development Company 36657Snate@binkert.org# All rights reserved. 46657Snate@binkert.org# 56657Snate@binkert.org# Redistribution and use in source and binary forms, with or without 66657Snate@binkert.org# modification, are permitted provided that the following conditions are 76657Snate@binkert.org# met: redistributions of source code must retain the above copyright 86657Snate@binkert.org# notice, this list of conditions and the following disclaimer; 96657Snate@binkert.org# redistributions in binary form must reproduce the above copyright 106657Snate@binkert.org# notice, this list of conditions and the following disclaimer in the 116657Snate@binkert.org# documentation and/or other materials provided with the distribution; 126657Snate@binkert.org# neither the name of the copyright holders nor the names of its 136657Snate@binkert.org# contributors may be used to endorse or promote products derived from 146657Snate@binkert.org# this software without specific prior written permission. 156657Snate@binkert.org# 166657Snate@binkert.org# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 176657Snate@binkert.org# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 186657Snate@binkert.org# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 196657Snate@binkert.org# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 206657Snate@binkert.org# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 216657Snate@binkert.org# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 226657Snate@binkert.org# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 236657Snate@binkert.org# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 246657Snate@binkert.org# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 256657Snate@binkert.org# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 266657Snate@binkert.org# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 276657Snate@binkert.org 286657Snate@binkert.orgfrom slicc.symbols.Symbol import Symbol 2910964Sdavid.hashe@amd.comfrom slicc.symbols.State import WildcardState 306657Snate@binkert.org 316657Snate@binkert.orgclass Transition(Symbol): 326657Snate@binkert.org def __init__(self, table, machine, state, event, nextState, actions, 3310165Snilay@cs.wisc.edu request_types, location): 346657Snate@binkert.org ident = "%s|%s" % (state, event) 3510165Snilay@cs.wisc.edu super(Transition, self).__init__(table, ident, location) 366657Snate@binkert.org 376657Snate@binkert.org self.state = machine.states[state] 386657Snate@binkert.org self.event = machine.events[event] 3910964Sdavid.hashe@amd.com if nextState == '*': 4010964Sdavid.hashe@amd.com # check to make sure there is a getNextState function declared 4110964Sdavid.hashe@amd.com found = False 4210964Sdavid.hashe@amd.com for func in machine.functions: 4311209Santhony.gutierrez@amd.com if func.c_ident == 'getNextState_Addr': 4410964Sdavid.hashe@amd.com found = True 4510964Sdavid.hashe@amd.com break 4611325Ssteve.reinhardt@amd.com if not found: 4710964Sdavid.hashe@amd.com fatal("Machine uses a wildcard transition without getNextState defined") 4810964Sdavid.hashe@amd.com self.nextState = WildcardState(machine.symtab, 4910964Sdavid.hashe@amd.com '*', location) 5010964Sdavid.hashe@amd.com else: 5110964Sdavid.hashe@amd.com self.nextState = machine.states[nextState] 526657Snate@binkert.org self.actions = [ machine.actions[a] for a in actions ] 539104Shestness@cs.utexas.edu self.request_types = [ machine.request_types[s] for s in request_types ] 546657Snate@binkert.org self.resources = {} 556657Snate@binkert.org 566657Snate@binkert.org for action in self.actions: 576657Snate@binkert.org for var,value in action.resources.iteritems(): 5810228Snilay@cs.wisc.edu num = int(value) 5910228Snilay@cs.wisc.edu if var in self.resources: 6010228Snilay@cs.wisc.edu num += int(value) 6110228Snilay@cs.wisc.edu self.resources[var] = str(num) 626657Snate@binkert.org 636657Snate@binkert.org def __repr__(self): 646657Snate@binkert.org return "[Transition: (%r, %r) -> %r, %r]" % \ 656657Snate@binkert.org (self.state, self.event, self.nextState, self.actions) 666657Snate@binkert.org 676657Snate@binkert.org def getActionShorthands(self): 686657Snate@binkert.org assert self.actions 696657Snate@binkert.org 706657Snate@binkert.org return ''.join(a.short for a in self.actions) 716657Snate@binkert.org 726657Snate@binkert.org__all__ = [ "Transition" ] 73