6a288d9de3
This patch allows SLICC protocols to use more than one message type with a message buffer. For example, you can declare two in ports as such: in_port(ResponseQueue_in, ResponseMsg, responseFromDir, rank=3) { ... } in_port(tgtResponseQueue_in, TgtResponseMsg, responseFromDir, rank=2) { ... }
98 lines
3.8 KiB
Python
98 lines
3.8 KiB
Python
# 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.StatementAST import StatementAST
|
|
from slicc.symbols import Var
|
|
|
|
class PeekStatementAST(StatementAST):
|
|
def __init__(self, slicc, queue_name, type_ast, pairs, statements, method):
|
|
super(PeekStatementAST, self).__init__(slicc, pairs)
|
|
|
|
self.queue_name = queue_name
|
|
self.type_ast = type_ast
|
|
self.statements = statements
|
|
self.method = method
|
|
|
|
def __repr__(self):
|
|
return "[PeekStatementAST: %r queue_name: %r type: %r %r]" % \
|
|
(self.method, self.queue_name, self.type_ast, self.statements)
|
|
|
|
def generate(self, code, return_type):
|
|
self.symtab.pushFrame()
|
|
|
|
msg_type = self.type_ast.type
|
|
|
|
# Add new local var to symbol table
|
|
var = Var(self.symtab, "in_msg", self.location, msg_type, "(*in_msg_ptr)",
|
|
self.pairs)
|
|
self.symtab.newSymbol(var)
|
|
|
|
# Check the queue type
|
|
self.queue_name.assertType("InPort")
|
|
|
|
# Declare the new "in_msg_ptr" variable
|
|
mtid = msg_type.ident
|
|
qcode = self.queue_name.var.code
|
|
code('''
|
|
{
|
|
// Declare message
|
|
const $mtid* in_msg_ptr M5_VAR_USED;
|
|
in_msg_ptr = dynamic_cast<const $mtid *>(($qcode).${{self.method}}());
|
|
if (in_msg_ptr == NULL) {
|
|
// If the cast fails, this is the wrong inport (wrong message type).
|
|
// Throw an exception, and the caller will decide to either try a
|
|
// different inport or punt.
|
|
throw RejectException();
|
|
}
|
|
''')
|
|
|
|
if self.pairs.has_key("block_on"):
|
|
address_field = self.pairs['block_on']
|
|
code('''
|
|
if (m_is_blocking &&
|
|
(m_block_map.count(in_msg_ptr->m_$address_field) == 1) &&
|
|
(m_block_map[in_msg_ptr->m_$address_field] != &$qcode)) {
|
|
$qcode.delayHead();
|
|
continue;
|
|
}
|
|
''')
|
|
|
|
if self.pairs.has_key("wake_up"):
|
|
address_field = self.pairs['wake_up']
|
|
code('''
|
|
if (m_waiting_buffers.count(in_msg_ptr->m_$address_field) > 0) {
|
|
wakeUpBuffers(in_msg_ptr->m_$address_field);
|
|
}
|
|
''')
|
|
|
|
# The other statements
|
|
self.statements.generate(code, return_type)
|
|
self.symtab.popFrame()
|
|
code("}")
|
|
|
|
def findResources(self, resources):
|
|
self.statements.findResources(resources)
|