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 Func, Type
306657Snate@binkert.org
316657Snate@binkert.orgclass FuncDeclAST(DeclAST):
326657Snate@binkert.org    def __init__(self, slicc, return_type, ident, formals, pairs, statements):
336657Snate@binkert.org        super(FuncDeclAST, self).__init__(slicc, pairs)
346657Snate@binkert.org
356657Snate@binkert.org        self.return_type = return_type
366657Snate@binkert.org        self.ident = ident
376657Snate@binkert.org        self.formals = formals
386657Snate@binkert.org        self.statements = statements
396657Snate@binkert.org
406657Snate@binkert.org    def __repr__(self):
416657Snate@binkert.org        return "[FuncDecl: %s]" % self.ident
426657Snate@binkert.org
436714Ssteve.reinhardt@amd.com    def files(self, parent=None):
448478Snilay@cs.wisc.edu        return set()
456657Snate@binkert.org
469298Snilay@cs.wisc.edu    def generate(self, parent = None):
476657Snate@binkert.org        types = []
4811049Snilay@cs.wisc.edu        params = []
496657Snate@binkert.org        void_type = self.symtab.find("void", Type)
506657Snate@binkert.org
516657Snate@binkert.org        # Generate definition code
526657Snate@binkert.org        self.symtab.pushFrame()
536657Snate@binkert.org
546657Snate@binkert.org        # Lookup return type
556657Snate@binkert.org        return_type = self.return_type.type
566657Snate@binkert.org
576657Snate@binkert.org        # Generate function header
586657Snate@binkert.org        for formal in self.formals:
596657Snate@binkert.org            # Lookup parameter types
6010307Snilay@cs.wisc.edu            try:
6111049Snilay@cs.wisc.edu                type, ident = formal.generate()
6210307Snilay@cs.wisc.edu                types.append(type)
6311049Snilay@cs.wisc.edu                params.append(ident)
6410307Snilay@cs.wisc.edu
6510307Snilay@cs.wisc.edu            except AttributeError:
6610307Snilay@cs.wisc.edu                types.append(formal.type)
6711049Snilay@cs.wisc.edu                params.append(None)
686657Snate@binkert.org
696999Snate@binkert.org        body = self.slicc.codeFormatter()
706657Snate@binkert.org        if self.statements is None:
716657Snate@binkert.org            self["external"] = "yes"
726657Snate@binkert.org        else:
736657Snate@binkert.org            rtype = self.statements.generate(body, return_type)
746657Snate@binkert.org
756657Snate@binkert.org        self.symtab.popFrame()
766657Snate@binkert.org
7710984SBrad.Beckmann@amd.com        func_name_args = self.ident
7810984SBrad.Beckmann@amd.com
7910984SBrad.Beckmann@amd.com        if parent is None:
8010984SBrad.Beckmann@amd.com            for arg in self.formals:
8110984SBrad.Beckmann@amd.com                from slicc.ast import FormalParamAST
8210984SBrad.Beckmann@amd.com                if isinstance(arg, FormalParamAST):
8310984SBrad.Beckmann@amd.com                    arg_name = arg.type_ast.ident
8410984SBrad.Beckmann@amd.com                else:
8510984SBrad.Beckmann@amd.com                    arg_name = arg
8610984SBrad.Beckmann@amd.com                func_name_args += "_" + str(arg_name)
8710984SBrad.Beckmann@amd.com
886657Snate@binkert.org        machine = self.state_machine
8910984SBrad.Beckmann@amd.com        func = Func(self.symtab, func_name_args, self.ident, self.location,
9011049Snilay@cs.wisc.edu                    return_type, types, params, str(body), self.pairs)
916657Snate@binkert.org
929298Snilay@cs.wisc.edu        if parent is not None:
939298Snilay@cs.wisc.edu            if not parent.addFunc(func):
949298Snilay@cs.wisc.edu                self.error("Duplicate method: %s:%s()" % (parent, self.ident))
959298Snilay@cs.wisc.edu            func.class_name = parent.c_ident
969298Snilay@cs.wisc.edu
979298Snilay@cs.wisc.edu        elif machine is not None:
986657Snate@binkert.org            machine.addFunc(func)
999298Snilay@cs.wisc.edu            func.isInternalMachineFunc = True
1009298Snilay@cs.wisc.edu            func.class_name = "%s_Controller" % machine
1016657Snate@binkert.org        else:
1026657Snate@binkert.org            self.symtab.newSymbol(func)
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