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# -*- coding: utf-8 -*-
#
# AWL simulator - FUP compiler - Operand element
#
# Copyright 2016-2017 Michael Buesch <m@bues.ch>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
from __future__ import division, absolute_import, print_function, unicode_literals
#from awlsim.common.cython_support cimport * #@cy
from awlsim.common.compat import *
from awlsim.fupcompiler.elem import *
from awlsim.core.operators import * #+cimport
from awlsim.core.operatortypes import * #+cimport
from awlsim.core.instructions.all_insns import * #+cimport
class FupCompiler_ElemOper(FupCompiler_Elem):
"""FUP compiler - Operand element.
"""
ELEM_NAME = "operator"
IS_LOAD_OPER = False
IS_EMBEDDED_OPER = False
EnumGen.start
SUBTYPE_LOAD = EnumGen.item
SUBTYPE_ASSIGN = EnumGen.item
SUBTYPE_EMBEDDED = EnumGen.item
EnumGen.end
str2subtype = {
"load" : SUBTYPE_LOAD,
"assign" : SUBTYPE_ASSIGN,
"embedded" : SUBTYPE_EMBEDDED,
}
@classmethod
def parse(cls, grid, x, y, subType, content):
try:
subType = cls.str2subtype[subType]
type2class = {
cls.SUBTYPE_LOAD : FupCompiler_ElemOperLoad,
cls.SUBTYPE_ASSIGN : FupCompiler_ElemOperAssign,
cls.SUBTYPE_EMBEDDED : FupCompiler_ElemOperEmbedded,
}
elemClass = None
with contextlib.suppress(KeyError):
elemClass = type2class[subType]
if elemClass:
return elemClass(grid=grid,
x=x, y=y,
content=content)
except KeyError:
pass
return None
def __init__(self, grid, x, y, subType, content, **kwargs):
FupCompiler_Elem.__init__(self, grid=grid, x=x, y=y,
elemType=FupCompiler_Elem.TYPE_OPERAND,
subType=subType, content=content,
**kwargs)
# The translated operator, if any, yet.
# This will be available after compilation of this element.
self._operator = None
self.__operatorWidth = None
def _getConn(self, getInput=True):
"""Get the one connection of this element.
"""
# Only one connection allowed per oper.
if len(self.connections) != 1:
raise FupOperError("Invalid number of "
"connections in '%s'." % (
str(self)),
self)
# The connection must be input.
conn = getany(self.connections)
if conn.dirIn != getInput or\
conn.dirOut == getInput or\
conn.pos != 0:
raise FupOperError("Invalid connection "
"properties in '%s'." % (
str(self)),
self)
return conn
def _getConnectedElem(self, viaOut=True):
"""Get the element that is connected to this operator element.
"""
conn = self._getConn(getInput=viaOut)
otherElem = conn.getConnectedElem(viaOut=viaOut)
return otherElem
def _translateContent(self):
"""Translate the element content and create self._operator,
if not already done so.
"""
if not self._operator:
if not self.content.strip():
raise FupOperError("Found empty operator: %s" % (
str(self)),
self)
opDesc = self.opTrans.translateFromString(self.content)
self._operator = opDesc.operator
return self._operator
@property
def operatorWidth(self):
if self.__operatorWidth is None:
if self._operator:
# Get the width of a possibly symbolic operator.
compiler = self.grid.compiler
width = compiler.getOperDataWidth(self._operator)
self.__operatorWidth = width
return width
else:
return self.__operatorWidth
# Unknown width
return 0
def getConnType(self, conn, preferVKE=False):
if conn in self.connections or conn is None:
self._translateContent()
operType = self._operator.operType
if operType == AwlOperatorTypes.SYMBOLIC:
pass#TODO
if operType in {AwlOperatorTypes.MEM_T,
AwlOperatorTypes.MEM_Z}:
if preferVKE:
return FupCompiler_Conn.TYPE_VKE
return FupCompiler_Conn.TYPE_ACCU
operWidth = self.operatorWidth
if operWidth == 1:
return FupCompiler_Conn.TYPE_VKE
elif operWidth in {8, 16, 32}:
return FupCompiler_Conn.TYPE_ACCU
return FupCompiler_Conn.TYPE_UNKNOWN
def compileAs(self, insnClass):
"""Compile this operator as the specified instruction.
This may be AwlInsn_U, AwlInsn_S or similar.
"""
insns = []
self._translateContent()
if self.IS_EMBEDDED_OPER:
conn = None
else:
conn = self._getConn(not self.IS_LOAD_OPER)
insns.append(self.newInsn(insnClass, ops=[self._operator],
parentFupConn=conn))
return insns
def compileConn(self, conn, desiredTarget, inverted=False):
self.compileState = self.COMPILE_RUNNING
insns = []
assert(conn in self.connections)
insnClass = FupCompiler_Conn.targetToInsnClass(desiredTarget,
toLoad=conn.dirOut,
inverted=inverted)
insns.extend(self.compileAs(insnClass))
self.compileState = self.COMPILE_DONE
return insns
def __str__(self):
extra = []
if len(self.connections) == 1:
conn = getany(self.connections)
elems = list(conn.getConnectedElems(viaOut=conn.dirIn,
viaIn=conn.dirOut))
if elems:
text = []
for elem in elems:
text.append(elem.toStr())
extra.append("for " + " and ".join(text))
return self.toStr(extra=extra)
class FupCompiler_ElemOperLoad(FupCompiler_ElemOper):
"""FUP compiler - Operand LOAD element.
"""
ELEM_NAME = "LOAD"
IS_LOAD_OPER = True
IS_EMBEDDED_OPER = False
# Allow multiple compilations of LOAD operand.
allowTrans_done2Running = True
def __init__(self, grid, x, y, content, **kwargs):
FupCompiler_ElemOper.__init__(self, grid=grid, x=x, y=y,
subType=FupCompiler_ElemOper.SUBTYPE_LOAD,
content=content,
**kwargs)
def _doCompile(self):
insns = []
# Translate the operator content
self._translateContent()
# Infer the instruction class from the operator.
# Note that this can't distinguish between different
# boolean types and always uses U.
if self.operatorWidth == 1:
insnClass = AwlInsn_U
elif self.operatorWidth in {8, 16, 32}:
insnClass = AwlInsn_L
else:
raise FupOperError("Invalid operator width %d "
"in load operator: %s" % (
self.operatorWidth, str(self)),
self)
# Create the LOAD instruction.
insns.extend(self.compileAs(insnClass))
return insns
class FupCompiler_ElemOperAssign(FupCompiler_ElemOper):
"""FUP compiler - Operand ASSIGN element.
"""
ELEM_NAME = "STORE"
IS_LOAD_OPER = False
IS_EMBEDDED_OPER = False
def __init__(self, grid, x, y, content, **kwargs):
FupCompiler_ElemOper.__init__(self, grid=grid, x=x, y=y,
subType=FupCompiler_ElemOper.SUBTYPE_ASSIGN,
content=content,
**kwargs)
self.__storeEmitted = False
@property
def isCompileEntryPoint(self):
return True # This is a compilation entry point.
def _doCompile(self):
insns = []
# Get the element that is connected to this operator.
otherElem = self._getConnectedElem()
# Translate the operator.
# Do this before compiling the connected element so that
# the operator is available to the element.
self._translateContent()
# Compile the element connected to the input.
if otherElem.needCompile:
insns.extend(otherElem.compile())
else:
if not self.__storeEmitted:
insns.extend(otherElem._loadFromTemp(AwlInsn_U))
if not self.__storeEmitted:
# This assign operator has not been emitted, yet.
# Do a VKE store now.
insns.extend(self.emitStore_VKE())
# Compile additional assign operators.
# This is an optimization to avoid additional compilations
# of the whole tree. We just assign the VKE once again.
#FIXME this might lead to problems in evaluation order, if we have a branch with interleaved assigns and other elems.
conn = getany(self.connections)
for otherElem in self.sorted(conn.getConnectedElems(viaIn=True)):
if otherElem.isType(self.TYPE_OPERAND,
self.SUBTYPE_ASSIGN):
otherElem.compileState = self.COMPILE_RUNNING
insns.extend(otherElem.compileAs(AwlInsn_ASSIGN))
otherElem.compileState = self.COMPILE_DONE
return insns
def emitStore_VKE(self):
"""Emit a VKE store instruction (=) for this operator element.
This does not check whether the operator actually is a boolean operator.
A list of instructions is returned.
"""
insns = []
# Create the ASSIGN instruction.
insns.extend(self.compileAs(AwlInsn_ASSIGN))
otherElem = self._getConnectedElem()
# If the other element connected to this operand is a boolean and has more
# than one connected element, we need to store the VKE for them.
if otherElem.isType(self.TYPE_BOOLEAN):
if any(len(tuple(c.getConnectedConns(getInputs=True))) > 1
for c in otherElem.outConnections):
outConn = otherElem.getOutConn()
insns.extend(otherElem._storeToTemp("BOOL", AwlInsn_ASSIGN,
{ outConn,
otherElem.MAIN_RESULT }))
self.__storeEmitted = True
return insns
def emitStore_ACCU(self):
"""Emit an ACCU store instruction (T) for this operator element.
This does not check whether the operator actually is a non-bool operator.
A list of instructions is returned.
"""
insns = []
# Create a transfer instruction.
insns.extend(self.compileAs(AwlInsn_T))
self.__storeEmitted = True
return insns
class FupCompiler_ElemOperEmbedded(FupCompiler_ElemOper):
"""FUP compiler - Embedded operand element.
"""
ELEM_NAME = "EMBEDDED"
IS_LOAD_OPER = False
IS_EMBEDDED_OPER = True
def __init__(self, grid, x, y, content, **kwargs):
FupCompiler_ElemOper.__init__(self, grid=grid, x=x, y=y,
subType=FupCompiler_ElemOper.SUBTYPE_EMBEDDED,
content=content,
**kwargs)
def _doCompile(self):
raise FupOperError("It's unknown how to compile "
"the embedded operand.",
self)
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