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# -*- coding: utf-8 -*-
#
# AWL simulator - operators
# Copyright 2012 Michael Buesch <m@bues.ch>
#
# Licensed under the terms of the GNU General Public License version 2.
#
from awlstatusword import *
from util import *
class AwlOperator(object):
# Operator types
IMM = 0 # Immediate value (constant)
IMM_S5T = 1 # S5T immediate
MEM_E = 100 # Input
MEM_A = 101 # Output
MEM_M = 102 # Flags
MEM_L = 103 # Localstack
MEM_D = 104 # Datamodule
MEM_T = 105 # Timer
MEM_Z = 106 # Counter
MEM_STW = 200 # Status word bit read
MEM_STW_Z = 201 # Status word "==0" read
MEM_STW_NZ = 202 # Status word "<>0" read
MEM_STW_POS = 203 # Status word ">0" read
MEM_STW_NEG = 204 # Status word "<0" read
MEM_STW_POSZ = 205 # Status word ">=0" read
MEM_STW_NEGZ = 206 # Status word "<=0" read
MEM_STW_UO = 207 # Status word "UO" read
LBL_REF = 300 # Label reference
BLKREF_FC = 400 # FC reference
BLKREF_SFC = 401 # SFC reference
BLKREF_FB = 402 # FB reference
BLKREF_SFB = 403 # SFB reference
BLKREF_DB = 404 # DB reference
# Virtual operators used for debugging of the simulator
VIRT_ACCU = 1000 # Accu
VIRT_AR = 1001 # AR
def __init__(self, type, width, offset, bitOffset=0):
self.type = type
self.width = width
self.offset = offset
self.bitOffset = bitOffset
self.labelIndex = None
self.insn = None
def setInsn(self, newInsn):
self.insn = newInsn
@property
def immediate(self):
return self.offset
@property
def label(self):
return self.offset
def setLabelIndex(self, newLabelIndex):
self.labelIndex = newLabelIndex
type2str = {
MEM_STW_Z : "==0",
MEM_STW_NZ : "<>0",
MEM_STW_POS : ">0",
MEM_STW_NEG : "<0",
MEM_STW_POSZ : ">=0",
MEM_STW_NEGZ : "<=0",
MEM_STW_UO : "UO",
}
type2prefix = {
MEM_E : "E",
MEM_A : "A",
MEM_M : "M",
MEM_L : "L",
MEM_D : "D",
MEM_T : "T",
MEM_Z : "Z",
}
def __repr__(self):
try:
return self.type2str[self.type]
except KeyError as e:
pass
if self.type == self.IMM:
return str(self.immediate)
elif self.type == self.IMM_S5T:
return "S5T#" #TODO
elif self.type in (self.MEM_A, self.MEM_E,
self.MEM_M, self.MEM_L):
pfx = self.type2prefix[self.type]
if self.width == 1:
return "%s %d.%d" %\
(pfx, self.offset, self.bitOffset)
elif self.width == 8:
return "%sB %d" % (pfx, self.offset)
elif self.width == 16:
return "%sW %d" % (pfx, self.offset)
elif self.width == 32:
return "%sD %d" % (pfx, self.offset)
elif self.type == self.MEM_D:
if self.width == 1:
return "DBX %d.%d" % (self.offset, self.bitOffset)
elif self.width == 8:
return "DBB %d" % self.offset
elif self.width == 16:
return "DBW %d" % self.offset
elif self.width == 32:
return "DBD %d" % self.offset
elif self.type == self.MEM_T:
return "T %d" % self.offset
elif self.type == self.MEM_Z:
return "Z %d" % self.offset
elif self.type == self.MEM_STW:
return "__STW " + S7StatusWord.nr2name[self.bitOffset]
elif self.type == self.LBL_REF:
return self.label
elif self.type == self.BLKREF_FC:
return "FC %d" % self.offset
elif self.type == self.BLKREF_SFC:
return "SFC %d" % self.offset
elif self.type == self.BLKREF_FB:
return "FB %d" % self.offset
elif self.type == self.BLKREF_SFB:
return "SFB %d" % self.offset
elif self.type == self.BLKREF_DB:
return "DB %d" % self.offset
elif self.type == self.VIRT_ACCU:
return "__ACCU %d" % self.offset
elif self.type == self.VIRT_AR:
return "__AR %d" % self.offset
assert(0)
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