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# -*- coding: utf-8 -*-
#
# AWL simulator - instructions
#
# 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.exceptions import *
from awlsim.core.instructions.main import * #+cimport
from awlsim.core.operatortypes import * #+cimport
from awlsim.core.operators import * #+cimport
#from libc.stdlib cimport abs #@cy
class AwlInsn_DI_I(AwlInsn): #+cdef
__slots__ = ()
def __init__(self, cpu, rawInsn=None, **kwargs):
AwlInsn.__init__(self, cpu, AwlInsn.TYPE_DI_I, rawInsn, **kwargs)
self.assertOpCount(0)
def run(self): #+cdef
#@cy cdef S7StatusWord s
#@cy cdef int32_t accu1
#@cy cdef uint32_t accu1abs
#@cy cdef int32_t accu2
#@cy cdef uint32_t accu2abs
#@cy cdef int32_t quo
#@cy cdef int32_t mod
s = self.cpu.statusWord
accu2, accu1 = self.cpu.accu2.getSignedWord(),\
self.cpu.accu1.getSignedWord()
if self.cpu.is4accu:
self.cpu.accu2.copyFrom(self.cpu.accu3)
self.cpu.accu3.copyFrom(self.cpu.accu4)
accu1abs = abs(accu1)
accu2abs = abs(accu2)
if accu1abs == 0: #+unlikely
s.A1, s.A0, s.OV, s.OS = 1, 1, 1, 1
return
quo = accu2abs // accu1abs
if int(accu1 < 0) ^ int(accu2 < 0): #@nocy
#@cy if <uint32_t>(accu1 < 0) ^ <uint32_t>(accu2 < 0):
quo = -quo
mod = accu2abs % accu1abs
if accu2 < 0:
mod = -mod
self.cpu.accu1.setDWord(((mod & 0xFFFF) << 16) |\
(quo & 0xFFFF))
if quo == 0:
s.A1, s.A0, s.OV = 0, 0, 0
elif quo < 0:
s.A1, s.A0, s.OV = 0, 1, 0
else:
s.A1, s.A0, s.OV = 1, 0, 0
if quo > 0x7FFF: #+unlikely
s.OV, s.OS = 1, 1
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