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.ast.DeclAST import DeclAST
296657Snate@binkert.orgfrom slicc.symbols import Action, Type, Var
306657Snate@binkert.org
316657Snate@binkert.orgclass ActionDeclAST(DeclAST):
326657Snate@binkert.org    def __init__(self, slicc, ident, pairs, statement_list):
336657Snate@binkert.org        super(ActionDeclAST, self).__init__(slicc, pairs)
346657Snate@binkert.org        self.ident = ident
356657Snate@binkert.org        self.statement_list = statement_list
366657Snate@binkert.org
376657Snate@binkert.org    def __repr__(self):
386657Snate@binkert.org        return "[ActionDecl: %r]" % (self.ident)
396657Snate@binkert.org
406657Snate@binkert.org    def generate(self):
416657Snate@binkert.org        resources = {}
427839Snilay@cs.wisc.edu
437839Snilay@cs.wisc.edu        machine = self.symtab.state_machine
447839Snilay@cs.wisc.edu        if machine is None:
457839Snilay@cs.wisc.edu            self.error("Action declaration not part of a machine.")
467839Snilay@cs.wisc.edu
476657Snate@binkert.org        if self.statement_list:
486657Snate@binkert.org            # Add new local vars
496657Snate@binkert.org            self.symtab.pushFrame()
506657Snate@binkert.org
5111025Snilay@cs.wisc.edu            addr_type = self.symtab.find("Addr", Type)
526657Snate@binkert.org
536657Snate@binkert.org            if addr_type is None:
5411025Snilay@cs.wisc.edu                self.error("Type 'Addr' not declared.")
556657Snate@binkert.org
566657Snate@binkert.org            var = Var(self.symtab, "address", self.location, addr_type,
576657Snate@binkert.org                      "addr", self.pairs)
586657Snate@binkert.org            self.symtab.newSymbol(var)
596657Snate@binkert.org
607839Snilay@cs.wisc.edu            if machine.TBEType != None:
617839Snilay@cs.wisc.edu                var = Var(self.symtab, "tbe", self.location, machine.TBEType,
628192SLisa.Hsu@amd.com                      "m_tbe_ptr", self.pairs)
637839Snilay@cs.wisc.edu                self.symtab.newSymbol(var)
647839Snilay@cs.wisc.edu
657839Snilay@cs.wisc.edu            if machine.EntryType != None:
667839Snilay@cs.wisc.edu                var = Var(self.symtab, "cache_entry", self.location,
678192SLisa.Hsu@amd.com                          machine.EntryType, "m_cache_entry_ptr", self.pairs)
687839Snilay@cs.wisc.edu                self.symtab.newSymbol(var)
697839Snilay@cs.wisc.edu
706657Snate@binkert.org            # Do not allows returns in actions
716999Snate@binkert.org            code = self.slicc.codeFormatter()
726657Snate@binkert.org            self.statement_list.generate(code, None)
736657Snate@binkert.org            self.pairs["c_code"] = str(code)
746657Snate@binkert.org
756657Snate@binkert.org            self.statement_list.findResources(resources)
766657Snate@binkert.org
776657Snate@binkert.org            self.symtab.popFrame()
786657Snate@binkert.org
796657Snate@binkert.org        action = Action(self.symtab, self.ident, resources, self.location,
806657Snate@binkert.org                        self.pairs)
816657Snate@binkert.org        machine.addAction(action)
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