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|
# -*- coding: utf-8 -*-
#
# AWL simulator - operators
#
# Copyright 2012-2018 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.common.datatypehelpers import * #+cimport
from awlsim.common.exceptions import *
from awlsim.common.util import *
from awlsim.core.operatortypes import * #+cimport
from awlsim.core.memory import * #+cimport
from awlsim.core.offset import * #+cimport
from awlsim.core.statusword import * #+cimport
from awlsim.core.timers import * #+cimport
class AwlOperator(object): #+cdef
"""An AWL operator.
An operator is an 'argument' to an instruction.
For example MW 10 in:
L MW 10
"""
# Type to string map
type2str = AwlOperatorTypes.type2str
# Immediate integer.
# Only used for IMM types.
immediate = 0 #@nocy
# Immediate bytes/bytearray.
# Only used for IMM_DT, IMM_STR and LBL_REF types.
immediateBytes = None #@nocy
# Immediate pointer.
# Only used for IMM_PTR type.
pointer = None #@nocy
# Extended-operator flag.
isExtended = False #@nocy
# Possible label index.
labelIndex = 0xFFFFFFFF #@nocy
# Interface index number.
# May be set by the symbol resolver.
interfaceIndex = 0xFFFF #@nocy
# Compound data type flag.
# Set to true for accesses > 32 bit or
# arrays/structs or array/struct elements.
compound = False #@nocy
# The access data type (AwlDataType), if known.
# Only set for resolved symbolic accesses.
dataType = None #@nocy
#@cy cdef void _cy_init(self):
#@cy self.immediate = 0
#@cy self.immediateBytes = None
#@cy self.pointer = None
#@cy self.isExtended = False
#@cy self.labelIndex = 0xFFFFFFFF
#@cy self.interfaceIndex = 0xFFFF
#@cy self.compound = False
#@cy self.dataType = None
def __eq__(self, other): #@nocy
#@cy cdef _Bool __eq(self, AwlOperator other):
return (self is other) or (\
isinstance(other, AwlOperator) and\
self.operType == other.operType and\
self.width == other.width and\
self.offset == other.offset and\
self.immediate == other.immediate and\
self.immediateBytes == other.immediateBytes and\
self.pointer == other.pointer and\
super(AwlOperator, self).__eq__(other)\
)
def __ne__(self, other): #@nocy
return not self.__eq__(other) #@nocy
#@cy def __richcmp__(self, object other, int op):
#@cy if op == 2: # __eq__
#@cy return self.__eq(other)
#@cy elif op == 3: # __ne__
#@cy return not self.__eq(other)
#@cy return False
# Make a deep copy, except for "insn".
def dup(self): #@nocy
#@cy cpdef AwlOperator dup(self):
#@cy cdef AwlOperator oper
#@cy cdef AwlOffset offset
offset = self.offset
if offset is not None:
offset = offset.dup()
oper = make_AwlOperator(self.operType,
self.width,
offset,
self.insn)
oper.pointer = self.pointer
oper.immediate = self.immediate
if self.immediateBytes is None:
oper.immediateBytes = None
else:
oper.immediateBytes = bytearray(self.immediateBytes)
oper.isExtended = self.isExtended
oper.labelIndex = self.labelIndex
oper.interfaceIndex = self.interfaceIndex
return oper
@property
def immediateStr(self):
from awlsim.common.sources import AwlSource
try:
return self.immediateBytes.decode(AwlSource.COMPAT_ENCODING)
except UnicodeError as e: #@nocov
raise AwlSimError("Invalid characters in operator (decode).")
@immediateStr.setter
def immediateStr(self, newStr):
from awlsim.common.sources import AwlSource
try:
self.immediateBytes = bytearray(newStr.encode(AwlSource.COMPAT_ENCODING))
except UnicodeError as e: #@nocov
raise AwlSimError("Invalid characters in operator (encode).")
def setInsn(self, newInsn):
self.insn = newInsn
def setExtended(self, isExtended):
self.isExtended = isExtended
def setLabelIndex(self, newLabelIndex):
self.labelIndex = newLabelIndex
def isImmediate(self): #@nocy
#@cy cdef _Bool isImmediate(self):
return self.operType > AwlOperatorTypes._IMM_START and\
self.operType < AwlOperatorTypes._IMM_END
def _raiseTypeError(self, actualType, expectedTypes):
expectedTypes = [ self.type2str[t] for t in sorted(expectedTypes) ]
raise AwlSimError("Invalid operator type. Got %s, but expected %s." %\
(self.type2str[actualType],
listToHumanStr(expectedTypes)),
insn=self.insn)
def assertType(self, types, lowerLimit=None, upperLimit=None, widths=None):
if self.operType == AwlOperatorTypes.NAMED_LOCAL or\
self.operType == AwlOperatorTypes.NAMED_LOCAL_PTR:
return #FIXME we should check type for these, too.
types = toSet(types)
if not self.operType in types:
self._raiseTypeError(self.operType, types)
if lowerLimit is not None:
if not self.isImmediate() or self.operType == AwlOperatorTypes.IMM_DT:
raise AwlSimBug("Invalid operator type for lowerLimit check")
if self.immediate < lowerLimit:
raise AwlSimError("Operator value too small",
insn=self.insn)
if upperLimit is not None:
if not self.isImmediate() or self.operType == AwlOperatorTypes.IMM_DT:
raise AwlSimBug("Invalid operator type for upperLimit check")
if self.immediate > upperLimit:
raise AwlSimError("Operator value too big",
insn=self.insn)
if widths is not None:
if not (makeAwlOperatorWidthMask(self.width) & widths):
raise AwlSimError("Invalid operator width. "
"Got %d, but expected %s." % (
self.width,
listToHumanStr(AwlOperatorWidths.maskToList(widths))))
def checkDataTypeCompat(self, _cpu, dataType):
#@cy cdef S7CPU cpu
from awlsim.core.datatypes import AwlDataType
cpu = _cpu
assert(isinstance(dataType, AwlDataType))
if self.operType in (AwlOperatorTypes.NAMED_LOCAL,
AwlOperatorTypes.NAMED_LOCAL_PTR,
AwlOperatorTypes.NAMED_DBVAR,
AwlOperatorTypes.SYMBOLIC):
# These are checked again after resolve.
# So don't check them now.
return
def mismatch(dataType, oper, operWidth):
raise AwlSimError("Data type '%s' of width %d bits "
"is not compatible with operator '%s' "
"of width %d bits." %\
(str(dataType), dataType.width, str(oper), operWidth))
if dataType.type == AwlDataType.TYPE_UDT_X:
udt = cpu.getUDT(dataType.index)
if not udt or udt._struct.getSize() * 8 != self.width:
mismatch(dataType, self, self.width)
elif dataType.type in {AwlDataType.TYPE_POINTER,
AwlDataType.TYPE_ANY}:
if self.operType == AwlOperatorTypes.IMM_PTR:
if dataType.type == AwlDataType.TYPE_POINTER and\
self.width > 48:
raise AwlSimError("Invalid immediate pointer "
"assignment to POINTER type.")
else:
if self.isImmediate():
raise AwlSimError("Invalid immediate "
"assignment to '%s' type." %\
str(dataType))
# Try to make pointer from operator.
# This will raise AwlSimError on failure.
self.makePointer()
elif dataType.type == AwlDataType.TYPE_CHAR:
if self.operType == AwlOperatorTypes.IMM_STR:
if self.width != (2 + 1) * 8:
raise AwlSimError("String to CHAR parameter "
"must be only one single character "
"long.")
else:
if (self.isImmediate() and
self.operType != AwlOperatorTypes.IMM):
raise AwlSimError("Invalid immediate '%s'"
"for CHAR data type." %\
str(self))
if self.width != dataType.width:
mismatch(dataType, self, self.width)
elif dataType.type == AwlDataType.TYPE_STRING:
if self.operType == AwlOperatorTypes.IMM_STR:
if self.width > dataType.width:
mismatch(dataType, self, self.width)
else:
if self.isImmediate():
raise AwlSimError("Invalid immediate '%s'"
"for STRING data type." %\
str(self))
assert(self.width <= (254 + 2) * 8)
assert(dataType.width <= (254 + 2) * 8)
if dataType.width != (254 + 2) * 8:
if self.width != dataType.width:
mismatch(dataType, self, self.width)
else:
if self.width != dataType.width:
mismatch(dataType, self, self.width)
# Resolve this indirect operator to a direct operator.
def resolve(self, store): #@nocy
#@cy cdef AwlOperator resolve(self, _Bool store):
# This already is a direct operator.
if self.operType == AwlOperatorTypes.NAMED_LOCAL:
# This is a named-local access (#abc).
# Resolve it to an interface-operator.
return self.insn.cpu.callStackTop.getInterfIdxOper(self.interfaceIndex).resolve(store)
return self
# Make an area-spanning Pointer (32 bit) to this memory area.
def makePointer(self):
return Pointer(self.makePointerValue())
# Make an area-spanning pointer value (32 bit) to this memory area.
def makePointerValue(self): #@nocy
#@cy cdef uint32_t makePointerValue(self) except? 0xFFFFFFFF:
#@cy cdef int64_t area
area = AwlIndirectOpConst.optype2area(self.operType)
if area < 0 or area > 0xFFFFFFFF: #+suffix-u #+unlikely
raise AwlSimError("Could not transform operator '%s' "
"into a pointer." % str(self))
return area | self.offset.toPointerValue()
# Make a DBPointer (48 bit) to this memory area.
def makeDBPointer(self):
return DBPointer(self.makePointerValue(),
self.offset.dbNumber)
# Make an ANY-pointer to this memory area.
# Returns an ANYPointer().
def makeANYPointer(self, areaShifted=None):
ptrValue = self.makePointerValue()
if areaShifted:
ptrValue &= ~PointerConst.AREA_MASK_S
ptrValue |= areaShifted
if ANYPointer.dataTypeIsSupported(self.dataType):
return ANYPointer.makeByAutoType(dataType = self.dataType,
ptrValue = ptrValue,
dbNr = self.offset.dbNumber)
return ANYPointer.makeByTypeWidth(bitWidth = self.width,
ptrValue = ptrValue,
dbNr = self.offset.dbNumber)
def __repr__(self):
from awlsim.core.datatypes import AwlDataType
from awlsim.common.sources import AwlSource
if self.operType == AwlOperatorTypes.IMM:
if self.width == 1:
return "TRUE" if (self.immediate & 1) else "FALSE"
elif self.width == 8:
return str(self.immediate)
elif self.width == 16:
return str(wordToSignedPyInt(self.immediate))
elif self.width == 32:
return "L#" + str(dwordToSignedPyInt(self.immediate))
if self.operType == AwlOperatorTypes.IMM_REAL:
return str(dwordToPyFloat(self.immediate))
elif self.operType == AwlOperatorTypes.IMM_S5T:
seconds = Timer_s5t_to_seconds(self.immediate)
return "S5T#" + AwlDataType.formatTime(seconds)
elif self.operType == AwlOperatorTypes.IMM_TIME:
return "T#" + AwlDataType.formatTime(self.immediate / 1000.0)
elif self.operType == AwlOperatorTypes.IMM_DATE:
return "D#" #TODO
elif self.operType == AwlOperatorTypes.IMM_TOD:
return "TOD#" #TODO
elif self.operType == AwlOperatorTypes.IMM_PTR:
return self.pointer.toPointerString()
elif self.operType == AwlOperatorTypes.IMM_STR:
strLen = self.immediateBytes[1]
return "'" + self.immediateBytes[2:2+strLen].decode(
AwlSource.COMPAT_ENCODING) + "'"
elif self.operType in {AwlOperatorTypes.MEM_A,
AwlOperatorTypes.MEM_E,
AwlOperatorTypes.MEM_M,
AwlOperatorTypes.MEM_L,
AwlOperatorTypes.MEM_VL}:
pfx = self.type2str[self.operType]
if self.width == 1:
return "%s %d.%d" %\
(pfx, self.offset.byteOffset, self.offset.bitOffset)
elif self.width == 8:
return "%sB %d" % (pfx, self.offset.byteOffset)
elif self.width == 16:
return "%sW %d" % (pfx, self.offset.byteOffset)
elif self.width == 32:
return "%sD %d" % (pfx, self.offset.byteOffset)
return self.makeANYPointer().toPointerString()
elif self.operType == AwlOperatorTypes.MEM_DB:
if self.offset.dbNumber < 0:
dbPrefix = ""
else:
dbPrefix = "DB%d." % self.offset.dbNumber
if self.width == 1:
return "%sDBX %d.%d" % (dbPrefix,
self.offset.byteOffset,
self.offset.bitOffset)
elif self.width == 8:
return "%sDBB %d" % (dbPrefix, self.offset.byteOffset)
elif self.width == 16:
return "%sDBW %d" % (dbPrefix, self.offset.byteOffset)
elif self.width == 32:
return "%sDBD %d" % (dbPrefix, self.offset.byteOffset)
return self.makeANYPointer().toPointerString()
elif self.operType == AwlOperatorTypes.MEM_DI:
if self.width == 1:
return "DIX %d.%d" % (self.offset.byteOffset, self.offset.bitOffset)
elif self.width == 8:
return "DIB %d" % self.offset.byteOffset
elif self.width == 16:
return "DIW %d" % self.offset.byteOffset
elif self.width == 32:
return "DID %d" % self.offset.byteOffset
return self.makeANYPointer().toPointerString()
elif self.operType == AwlOperatorTypes.MEM_T:
return "T %d" % self.offset.byteOffset
elif self.operType == AwlOperatorTypes.MEM_Z:
return "Z %d" % self.offset.byteOffset
elif self.operType == AwlOperatorTypes.MEM_PA:
if self.width == 8:
return "PAB %d" % self.offset.byteOffset
elif self.width == 16:
return "PAW %d" % self.offset.byteOffset
elif self.width == 32:
return "PAD %d" % self.offset.byteOffset
return self.makeANYPointer().toPointerString()
elif self.operType == AwlOperatorTypes.MEM_PE:
if self.width == 8:
return "PEB %d" % self.offset.byteOffset
elif self.width == 16:
return "PEW %d" % self.offset.byteOffset
elif self.width == 32:
return "PED %d" % self.offset.byteOffset
return self.makeANYPointer().toPointerString()
elif self.operType == AwlOperatorTypes.MEM_STW:
if self.width == 1:
bitNumber = self.offset.bitOffset
bitName = S7StatusWord.nr2name_german[bitNumber]
if bitNumber in {4, 5, 8}:
return bitName
return "__STW " + bitName
else:
return "STW"
elif self.operType == AwlOperatorTypes.LBL_REF:
return self.immediateStr
elif self.operType == AwlOperatorTypes.BLKREF_FC:
return "FC %d" % self.offset.byteOffset
elif self.operType == AwlOperatorTypes.BLKREF_SFC:
return "SFC %d" % self.offset.byteOffset
elif self.operType == AwlOperatorTypes.BLKREF_FB:
return "FB %d" % self.offset.byteOffset
elif self.operType == AwlOperatorTypes.BLKREF_SFB:
return "SFB %d" % self.offset.byteOffset
elif self.operType == AwlOperatorTypes.BLKREF_UDT:
return "UDT %d" % self.offset.byteOffset
elif self.operType == AwlOperatorTypes.BLKREF_DB:
return "DB %d" % self.offset.byteOffset
elif self.operType == AwlOperatorTypes.BLKREF_DI:
return "DI %d" % self.offset.byteOffset
elif self.operType == AwlOperatorTypes.BLKREF_OB:
return "OB %d" % self.offset.byteOffset
elif self.operType == AwlOperatorTypes.BLKREF_VAT:
return "VAT %d" % self.offset.byteOffset
elif self.operType == AwlOperatorTypes.MULTI_FB:
return "#FB<" + self.makeANYPointer(PointerConst.AREA_DI_S).toPointerString() + ">"
elif self.operType == AwlOperatorTypes.MULTI_SFB:
return "#SFB<" + self.makeANYPointer(PointerConst.AREA_DI_S).toPointerString() + ">"
elif self.operType == AwlOperatorTypes.SYMBOLIC:
return '"%s"' % self.offset.identChain.getString()
elif self.operType == AwlOperatorTypes.NAMED_LOCAL:
return "#" + self.offset.identChain.getString()
elif self.operType == AwlOperatorTypes.NAMED_LOCAL_PTR:
return "P##" + self.offset.identChain.getString()
elif self.operType == AwlOperatorTypes.NAMED_DBVAR:
return str(self.offset)
elif self.operType == AwlOperatorTypes.INDIRECT:
assert(0) # Overloaded in AwlIndirectOp
elif self.operType == AwlOperatorTypes.VIRT_ACCU:
return "__ACCU %d" % self.offset.byteOffset
elif self.operType == AwlOperatorTypes.VIRT_AR:
return "__AR %d" % self.offset.byteOffset
elif self.operType == AwlOperatorTypes.VIRT_DBR:
return "__DBR %d" % self.offset.byteOffset
elif self.operType == AwlOperatorTypes.UNSPEC:
return "__UNSPEC"
try:
return self.type2str[self.operType]
except KeyError: #@nocov
assert(0)
#
# make_AwlOperator - Construct an AwlOperator instance.
#
# operType -> The operator type ID number. See "Operator types" above.
# width -> The bit width of the access.
# offset -> The AwlOffset of this operator. May be None.
# insn -> The instruction this operator is used in. May be None.
#
def make_AwlOperator(operType, width, offset, insn, #@nocy
AwlOperator=AwlOperator): #@nocy
#cdef AwlOperator make_AwlOperator(uint32_t operType, int32_t width, #@cy
# AwlOffset offset, AwlInsn insn): #@cy
#@cy cdef AwlOperator operator
operator = AwlOperator()
#@cy operator._cy_init()
operator.operType, operator.width, operator.offset, operator.insn =\
operType, width, offset, insn
return operator
class AwlIndirectOp(AwlOperator): #+cdef
"""Indirect addressing operand.
"""
# Make a deep copy, except for "insn".
def dup(self): #@nocy
#@cy cpdef AwlOperator dup(self):
return make_AwlIndirectOp(self.area,
self.width,
self.addressRegister,
self.offsetOper.dup(),
self.insn)
def setInsn(self, newInsn):
AwlOperator.setInsn(self, newInsn)
self.offsetOper.setInsn(newInsn)
def assertType(self, types, lowerLimit=None, upperLimit=None):
types = toSet(types)
if not AwlIndirectOpConst.area2optype(self.area, False) in types and\
not AwlIndirectOpConst.area2optype(self.area, True) in types:
self._raiseTypeError(AwlIndirectOpConst.area2optype(self.area, False), types)
assert(lowerLimit is None)
assert(upperLimit is None)
# Resolve this indirect operator to a direct operator.
def resolve(self, store): #@nocy
#@cy cdef AwlOperator resolve(self, _Bool store):
#@cy cdef _Bool bitwiseDirectOffset
#@cy cdef AwlOffset directOffset
#@cy cdef AwlOperator offsetOper
#@cy cdef uint32_t offsetValue
#@cy cdef uint64_t pointer
#@cy cdef int32_t optype
bitwiseDirectOffset = True
offsetOper = self.offsetOper
# Construct the pointer
if self.addressRegister == AwlIndirectOpConst.AR_NONE:
# Memory-indirect access
if self.area == PointerConst.AREA_NONE_S:
raise AwlSimError("Area-spanning access not "
"possible in indirect access without "
"address register.")
if self.area > PointerConst.AREA_MASK_S:
# Is extended area
bitwiseDirectOffset = False
if offsetOper.width not in (8, 16, 32):
raise AwlSimError("Offset operator in indirect "
"access is not of 8, 16 or 32 bit width.")
else:
# Is standard area
if offsetOper.width != 32:
raise AwlSimError("Offset operator in indirect "
"access is not of 32 bit width.")
if offsetOper.operType not in (AwlOperatorTypes.MEM_M,
AwlOperatorTypes.MEM_L,
AwlOperatorTypes.MEM_DB,
AwlOperatorTypes.MEM_DI):
raise AwlSimError("Offset operator in indirect "
"access is not a valid memory offset.")
offsetValue = AwlMemoryObject_asScalar(
self.insn.cpu.fetch(offsetOper,
AwlOperatorWidths.WIDTH_MASK_8_16_32))
pointer = (self.area | (offsetValue & 0x0007FFFF)) #+suffix-u
else:
# Register-indirect access
if offsetOper.operType != AwlOperatorTypes.IMM_PTR:
raise AwlSimError("Offset operator in "
"register-indirect access is not a "
"pointer immediate.")
offsetValue = AwlMemoryObject_asScalar(
self.insn.cpu.fetch(offsetOper,
(AwlOperatorWidths.WIDTH_MASK_8_16_32 &
0x0007FFFF))) #+suffix-u
if self.area == PointerConst.AREA_NONE_S:
# Area-spanning access
pointer = ((self.insn.cpu.getAR(self.addressRegister).get() +
offsetValue) & 0xFFFFFFFF) #+suffix-u
else:
# Area-internal access
pointer = (((self.insn.cpu.getAR(self.addressRegister).get() +
offsetValue) & 0x0007FFFF) | #+suffix-u
self.area)
# Create a direct operator
if store:
optype = AwlIndirectOpConst.area2optype(
(pointer & AwlIndirectOpConst.EXT_AREA_MASK_S),
True)
else:
optype = AwlIndirectOpConst.area2optype(
(pointer & AwlIndirectOpConst.EXT_AREA_MASK_S),
False)
if optype < 0: #+unlikely
raise AwlSimError("Invalid area code (%X hex) in indirect addressing" %\
((pointer & AwlIndirectOpConst.EXT_AREA_MASK_S) >>\
PointerConst.AREA_SHIFT))
if bitwiseDirectOffset:
# 'pointer' has pointer format
directOffset = make_AwlOffset_fromPointerValue(pointer)
else:
# 'pointer' is a byte offset
directOffset = make_AwlOffset(pointer & 0x0000FFFF, 0) #+suffix-u
if self.width != 1 and directOffset.bitOffset:
raise AwlSimError("Bit offset (lowest three bits) in %d-bit "
"indirect addressing is not zero. "
"(Computed offset is: %s)" %\
(self.width, str(directOffset)))
return make_AwlOperator(optype, self.width, directOffset, self.insn)
def __pointerError(self): #@nocov
# This is a programming error.
# The caller should resolve() the operator first.
raise AwlSimBug("Can not transform indirect operator "
"into a pointer. Resolve it first.")
def makePointer(self):
self.__pointerError() #@nocov
def makePointerValue(self): #@nocy
#@cy cdef uint32_t makePointerValue(self) except? 0xFFFFFFFF:
self.__pointerError() #@nocov
def makeDBPointer(self):
self.__pointerError() #@nocov
def makeANYPointer(self, areaShifted=None):
self.__pointerError() #@nocov
def __repr__(self):
return "__INDIRECT" #TODO
#
# make_AwlIndirectOp() - Construct an AwlIndirectOp instance.
#
# area -> The area code for this indirect operation.
# AREA_... or EXT_AREA_...
# This corresponds to the area code in AWL pointer format.
# width -> The width (in bits) of the region that is being adressed.
# addressRegister -> One of:
# AR_NONE => This is a memory-indirect access.
# AR_1 => This is a register-indirect access with AR1.
# AR_2 => This is a register-indirect access with AR2.
# offsetOper -> This is the AwlOperator for the offset.
# For memory-indirect access, this must be an AwlOperator
# with type MEM_M, MEM_L, MEM_DB or MEM_DI.
# For register-indirect access, this must be an AwlOperator
# with "type==IMM_PTR".
# insn -> The instruction this operator is used in. May be None.
#
def make_AwlIndirectOp(area, width, addressRegister, offsetOper, insn, #@nocy
AwlIndirectOp=AwlIndirectOp): #@nocy
#cdef AwlIndirectOp make_AwlIndirectOp(uint64_t area, #@cy
# int32_t width, #@cy
# uint32_t addressRegister, #@cy
# AwlOperator offsetOper, #@cy
# AwlInsn insn): #@cy
#@cy cdef AwlIndirectOp operator
operator = AwlIndirectOp()
#@cy operator._cy_init()
operator.operType = AwlOperatorTypes.INDIRECT
operator.width = width
operator.offset = None
operator.insn = insn
operator.area = area
operator.addressRegister = addressRegister
operator.offsetOper = offsetOper
return operator
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