Adding gem5 source to svn.

git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1819 8c4709b5-6ec9-48aa-a5cd-a96041d1645a

simulators/gem5/src/mem/slicc/ast/FuncDeclAST.py

@@ -0,0 +1,79 @@
+# Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
+# Copyright (c) 2009 The Hewlett-Packard Development Company
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met: redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer;
+# redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution;
+# neither the name of the copyright holders nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+from slicc.ast.DeclAST import DeclAST
+from slicc.symbols import Func, Type
+
+class FuncDeclAST(DeclAST):
+    def __init__(self, slicc, return_type, ident, formals, pairs, statements):
+        super(FuncDeclAST, self).__init__(slicc, pairs)
+
+        self.return_type = return_type
+        self.ident = ident
+        self.formals = formals
+        self.statements = statements
+
+    def __repr__(self):
+        return "[FuncDecl: %s]" % self.ident
+
+    def files(self, parent=None):
+        return set()
+
+    def generate(self):
+        types = []
+        params = []
+        void_type = self.symtab.find("void", Type)
+
+        # Generate definition code
+        self.symtab.pushFrame()
+
+        # Lookup return type
+        return_type = self.return_type.type
+
+        # Generate function header
+        for formal in self.formals:
+            # Lookup parameter types
+            type, ident = formal.generate()
+            types.append(type)
+            params.append(ident)
+
+        body = self.slicc.codeFormatter()
+        if self.statements is None:
+            self["external"] = "yes"
+        else:
+            rtype = self.statements.generate(body, return_type)
+
+        self.symtab.popFrame()
+
+        machine = self.state_machine
+        func = Func(self.symtab, self.ident, self.location, return_type,
+                    types, params, str(body), self.pairs, machine)
+
+        if machine is not None:
+            machine.addFunc(func)
+        else:
+            self.symtab.newSymbol(func)