def _modulehead(self, terms):
modulehead = ''
modulehead += '`default_nettype none\n'
modulehead += 'module ' + self.modulename + '('
modulehead += '\n' + (' ' * self.num_indent)
modulehead += self.clock_name + ', '
modulehead += self.reset_name + ', '
modulehead += self.enable_name + ', '
modulehead += '\n' + (' ' * self.num_indent)
for tk, tv in terms.items():
scope = util.getScope(tk)
if util.isTopmodule(scope):
termtype = self.getTermtype(tk)
if signaltype.isInput(termtype) and tk == util.toTermname(
(self.topmodule, self.reset_name)):
continue
if signaltype.isInput(termtype) and tk == util.toTermname(
(self.topmodule, self.clock_name)):
continue
if signaltype.isInput(termtype):
modulehead += util.toFlatname(tk) + ', '
elif signaltype.isInout(termtype):
modulehead += util.toFlatname(tk) + ', '
elif signaltype.isOutput(termtype):
modulehead += util.toFlatname(tk) + ', '
modulehead = modulehead[:-2] + ');\n\n'
return modulehead
def _modulehead(self, terms):
modulehead = ''
modulehead += '`default_nettype none\n'
modulehead += 'module ' + self.modulename + '('
modulehead += '\n' + (' ' * self.num_indent)
modulehead += self.clock_name + ', '
modulehead += self.reset_name + ', '
modulehead += self.enable_name + ', '
modulehead += '\n' + (' ' * self.num_indent)
for tk, tv in terms.items():
scope = util.getScope(tk)
if util.isTopmodule(scope):
termtype = self.getTermtype(tk)
if signaltype.isInput(termtype) and tk == util.toTermname((self.topmodule, self.reset_name)): continue
if signaltype.isInput(termtype) and tk == util.toTermname((self.topmodule, self.clock_name)): continue
if signaltype.isInput(termtype): modulehead += util.toFlatname(tk) + ', '
elif signaltype.isInout(termtype): modulehead += util.toFlatname(tk) + ', '
elif signaltype.isOutput(termtype): modulehead += util.toFlatname(tk) + ', '
modulehead = modulehead[:-2] + ');\n\n'
return modulehead
def walkTree(self,
tree,
visited=set([]),
step=0,
delay=False,
msb=None,
lsb=None,
ptr=None):
if tree is None:
return DFUndefined(32)
if isinstance(tree, DFUndefined):
return tree
if isinstance(tree, DFHighImpedance):
return tree
if isinstance(tree, DFConstant):
return tree
if isinstance(tree, DFEvalValue):
return tree
if isinstance(tree, DFTerminal):
scope = util.getScope(tree.name)
termname = tree.name
if termname in visited: return tree
termtype = self.getTermtype(termname)
if util.isTopmodule(scope) and signaltype.isInput(termtype):
return tree
nptr = None
if signaltype.isRegArray(termtype) or signaltype.isWireArray(
termtype):
if ptr is None:
raise verror.FormatError(
'Array variable requires an pointer.')
if msb is not None and lsb is not None: return tree
nptr = ptr
nextstep = step
if signaltype.isReg(termtype) or signaltype.isRegArray(termtype):
if (not self.isCombination(termname)
and not signaltype.isRename(termtype)
and nextstep == 0):
return tree
if (not self.isCombination(termname)
and not signaltype.isRename(termtype)):
nextstep -= 1
return self.walkTree(self.getTree(termname, nptr), visited | set([
termname,
]), nextstep, delay)
if isinstance(tree, DFBranch):
condnode = self.walkTree(tree.condnode, visited, step, delay)
truenode = self.walkTree(tree.truenode, visited, step, delay)
falsenode = self.walkTree(tree.falsenode, visited, step, delay)
return DFBranch(condnode, truenode, falsenode)
if isinstance(tree, DFOperator):
nextnodes = []
for n in tree.nextnodes:
nextnodes.append(self.walkTree(n, visited, step, delay))
return DFOperator(tuple(nextnodes), tree.operator)
if isinstance(tree, DFPartselect):
msb = self.walkTree(tree.msb, visited, step, delay)
lsb = self.walkTree(tree.lsb, visited, step, delay)
var = self.walkTree(tree.var,
visited,
step,
delay,
msb=msb,
lsb=lsb)
return DFPartselect(var, msb, lsb)
if isinstance(tree, DFPointer):
ptr = self.walkTree(tree.ptr, visited, step, delay)
var = self.walkTree(tree.var, visited, step, delay, ptr=ptr)
if isinstance(tree.var, DFTerminal):
termtype = self.getTermtype(tree.var.name)
if ((signaltype.isRegArray(termtype)
or signaltype.isWireArray(termtype))
and not (isinstance(var, DFTerminal)
and var.name == tree.var.name)):
return var
return DFPointer(var, ptr)
if isinstance(tree, DFConcat):
nextnodes = []
for n in tree.nextnodes:
nextnodes.append(self.walkTree(n, visited, step, delay))
return DFConcat(tuple(nextnodes))
raise verror.DefinitionError('Undefined Node Type: %s : %s' %
(str(type(tree)), str(tree)))
def walkTree(self, tree, visited=set([]), step=0, delay=False, msb=None, lsb=None, ptr=None):
if tree is None:
return DFUndefined(32)
if isinstance(tree, DFUndefined):
return tree
if isinstance(tree, DFHighImpedance):
return tree
if isinstance(tree, DFConstant):
return tree
if isinstance(tree, DFEvalValue):
return tree
if isinstance(tree, DFTerminal):
scope = util.getScope(tree.name)
termname = tree.name
if termname in visited:
return tree
termtype = self.getTermtype(termname)
if util.isTopmodule(scope) and signaltype.isInput(termtype):
return tree
nptr = None
if signaltype.isRegArray(termtype) or signaltype.isWireArray(termtype):
if ptr is None:
raise verror.FormatError("Array variable requires an pointer.")
if msb is not None and lsb is not None:
return tree
nptr = ptr
nextstep = step
if signaltype.isReg(termtype) or signaltype.isRegArray(termtype):
if not self.isCombination(termname) and not signaltype.isRename(termtype) and nextstep == 0:
return tree
if not self.isCombination(termname) and not signaltype.isRename(termtype):
nextstep -= 1
return self.walkTree(self.getTree(termname, nptr), visited | set([termname]), nextstep, delay)
if isinstance(tree, DFBranch):
condnode = self.walkTree(tree.condnode, visited, step, delay)
truenode = self.walkTree(tree.truenode, visited, step, delay)
falsenode = self.walkTree(tree.falsenode, visited, step, delay)
return DFBranch(condnode, truenode, falsenode)
if isinstance(tree, DFOperator):
nextnodes = []
for n in tree.nextnodes:
nextnodes.append(self.walkTree(n, visited, step, delay))
return DFOperator(tuple(nextnodes), tree.operator)
if isinstance(tree, DFPartselect):
msb = self.walkTree(tree.msb, visited, step, delay)
lsb = self.walkTree(tree.lsb, visited, step, delay)
var = self.walkTree(tree.var, visited, step, delay, msb=msb, lsb=lsb)
if isinstance(var, DFPartselect):
child_lsb = self.getTerm(str(tree.var)).lsb.eval()
return DFPartselect(
var.var,
DFIntConst(str(msb.eval() + var.lsb.eval() - child_lsb)),
DFIntConst(str(lsb.eval() + var.lsb.eval() - child_lsb)),
)
return DFPartselect(var, msb, lsb)
if isinstance(tree, DFPointer):
ptr = self.walkTree(tree.ptr, visited, step, delay)
var = self.walkTree(tree.var, visited, step, delay, ptr=ptr)
if isinstance(tree.var, DFTerminal):
termtype = self.getTermtype(tree.var.name)
if (signaltype.isRegArray(termtype) or signaltype.isWireArray(termtype)) and not (
isinstance(var, DFTerminal) and var.name == tree.var.name
):
return var
return DFPointer(var, ptr)
if isinstance(tree, DFConcat):
nextnodes = []
for n in tree.nextnodes:
nextnodes.append(self.walkTree(n, visited, step, delay))
return DFConcat(tuple(nextnodes))
raise verror.DefinitionError("Undefined Node Type: %s : %s" % (str(type(tree)), str(tree)))
