Func.py revision 11029
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
296657Snate@binkert.orgfrom slicc.symbols.Type import Type
306657Snate@binkert.org
316657Snate@binkert.orgclass Func(Symbol):
3210984SBrad.Beckmann@amd.com    def __init__(self, table, ident, name, location, return_type, param_types,
339298Snilay@cs.wisc.edu                 param_strings, body, pairs):
346657Snate@binkert.org        super(Func, self).__init__(table, ident, location, pairs)
356657Snate@binkert.org        self.return_type = return_type
366657Snate@binkert.org        self.param_types = param_types
376657Snate@binkert.org        self.param_strings = param_strings
386657Snate@binkert.org        self.body = body
396657Snate@binkert.org        self.isInternalMachineFunc = False
408337Snilay@cs.wisc.edu        self.c_ident = ident
4110984SBrad.Beckmann@amd.com        self.c_name = name
429298Snilay@cs.wisc.edu        self.class_name = ""
436657Snate@binkert.org
446657Snate@binkert.org    def __repr__(self):
456657Snate@binkert.org        return ""
466657Snate@binkert.org
476657Snate@binkert.org    @property
486657Snate@binkert.org    def prototype(self):
496657Snate@binkert.org        if "external" in self:
506657Snate@binkert.org            return ""
516657Snate@binkert.org
526657Snate@binkert.org        return_type = self.return_type.c_ident
536657Snate@binkert.org        void_type = self.symtab.find("void", Type)
546657Snate@binkert.org        if "return_by_ref" in self and self.return_type != void_type:
556657Snate@binkert.org            return_type += "&"
567839Snilay@cs.wisc.edu        elif "return_by_pointer" in self and self.return_type != void_type:
577839Snilay@cs.wisc.edu            return_type += "*"
586657Snate@binkert.org
5910984SBrad.Beckmann@amd.com        return "%s %s(%s);" % (return_type, self.c_name,
606657Snate@binkert.org                               ", ".join(self.param_strings))
616657Snate@binkert.org
629219Spower.jg@gmail.com    def writeCodeFiles(self, path, includes):
638478Snilay@cs.wisc.edu        return
648478Snilay@cs.wisc.edu
6511029Snilay@cs.wisc.edu    def checkArguments(self, args):
6611029Snilay@cs.wisc.edu        if len(args) != len(self.param_types):
6711029Snilay@cs.wisc.edu            self.error("Wrong number of arguments passed to function : '%s'" +\
6811029Snilay@cs.wisc.edu                       " Expected %d, got %d", self.c_ident,
6911029Snilay@cs.wisc.edu                       len(self.param_types), len(args))
7011029Snilay@cs.wisc.edu
7111029Snilay@cs.wisc.edu        cvec = []
7211029Snilay@cs.wisc.edu        type_vec = []
7311029Snilay@cs.wisc.edu        for expr,expected_type in zip(args, self.param_types):
7411029Snilay@cs.wisc.edu            # Check the types of the parameter
7511029Snilay@cs.wisc.edu            actual_type,param_code = expr.inline(True)
7611029Snilay@cs.wisc.edu            if str(actual_type) != 'OOD' and \
7711029Snilay@cs.wisc.edu               str(actual_type) != str(expected_type) and \
7811029Snilay@cs.wisc.edu               str(actual_type["interface"]) != str(expected_type):
7911029Snilay@cs.wisc.edu                expr.error("Type mismatch: expected: %s actual: %s" % \
8011029Snilay@cs.wisc.edu                           (expected_type, actual_type))
8111029Snilay@cs.wisc.edu            cvec.append(param_code)
8211029Snilay@cs.wisc.edu            type_vec.append(expected_type)
8311029Snilay@cs.wisc.edu
8411029Snilay@cs.wisc.edu        return cvec, type_vec
8511029Snilay@cs.wisc.edu
868478Snilay@cs.wisc.edu    def generateCode(self):
876657Snate@binkert.org        '''This write a function of object Chip'''
886657Snate@binkert.org        if "external" in self:
898478Snilay@cs.wisc.edu            return ""
906657Snate@binkert.org
916999Snate@binkert.org        code = self.symtab.codeFormatter()
926657Snate@binkert.org
936657Snate@binkert.org        # Generate function header
946657Snate@binkert.org        void_type = self.symtab.find("void", Type)
956657Snate@binkert.org        return_type = self.return_type.c_ident
966657Snate@binkert.org        if "return_by_ref" in self and self.return_type != void_type:
976657Snate@binkert.org            return_type += "&"
987839Snilay@cs.wisc.edu        if "return_by_pointer" in self and self.return_type != void_type:
997839Snilay@cs.wisc.edu            return_type += "*"
1006657Snate@binkert.org
1016657Snate@binkert.org        params = ', '.join(self.param_strings)
1026657Snate@binkert.org
1036657Snate@binkert.org        code('''
1047007Snate@binkert.org$return_type
10510984SBrad.Beckmann@amd.com${{self.class_name}}::${{self.c_name}}($params)
1066657Snate@binkert.org{
1076657Snate@binkert.org${{self.body}}
1086657Snate@binkert.org}
1096657Snate@binkert.org''')
1108478Snilay@cs.wisc.edu        return str(code)
1116657Snate@binkert.org
1126657Snate@binkert.org__all__ = [ "Func" ]
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