summaryrefslogtreecommitdiffstats
path: root/awlsim/core/operators.py
blob: 1f240fa8f6f2c39ba699cf961bbd22ec999de9a7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
# -*- 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
bues.ch cgit interface