aboutsummaryrefslogtreecommitdiffstats
path: root/awlsim/fupcompiler/elemoper.py
blob: e863bf7a4974e9297aa2a0c870d742b863500c15 (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
# -*- coding: utf-8 -*-
#
# AWL simulator - FUP compiler - Operand element
#
# Copyright 2016-2018 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.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.enabled:
			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 self.enabled and (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.
		"""
		if not self.enabled:
			return []
		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):
		if not self.enabled:
			return []
		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):
		if not self.enabled:
			return []
		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):
		if not self.enabled:
			return False
		return True # This is a compilation entry point.

	def _doCompile(self):
		if not self.enabled:
			return []
		insns = []

		# Get the element that is connected to this operator.
		otherElem = self._getConnectedElem()

		# If the connected element is disabled,
		# do not compile this assignment either.
		if not otherElem.enabled:
			return []

		# 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.
		"""
		if not self.enabled:
			return []
		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.
		"""
		if not self.enabled:
			return []
		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):
		if not self.enabled:
			return []
		raise FupOperError("It's unknown how to compile "
			"the embedded operand.",
			self)
bues.ch cgit interface