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# -*- coding: utf-8 -*-
#
# AWL simulator - SFCs
#
# 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.common.wordpacker import *
from awlsim.common.datatypehelpers import * #+cimport
from awlsim.common.exceptions import *
from awlsim.common.util import *
from awlsim.core.systemblocks.systemblocks import * #+cimport
from awlsim.core.systemblocks.error_codes import *
from awlsim.core.cpu import * #+cimport
from awlsim.core.offset import * #+cimport
from awlsim.core.operatortypes import * #+cimport
from awlsim.core.operators import * #+cimport
from awlsim.core.memory import * #+cimport
from awlsim.core.blockinterface import *
class SFC21(SFC): #+cdef
name = (21, "FILL", "fill memory area")
interfaceFields = {
BlockInterfaceField.FTYPE_IN : (
BlockInterfaceField(name="BVAL", dataType="ANY"),
),
BlockInterfaceField.FTYPE_OUT : (
BlockInterfaceField(name="RET_VAL", dataType="INT"),
BlockInterfaceField(name="BLK", dataType="ANY"),
),
}
def __init__(self, *args, **kwargs):
SFC.__init__(self, *args, **kwargs)
from awlsim.core.datatypes import AwlDataType
self.__typeWidths = AwlDataType.typeWidths
def run(self): #+cpdef
#@cy cdef S7CPU cpu
#@cy cdef S7StatusWord s
#@cy cdef int32_t operType
#@cy cdef AwlMemoryObject data
cpu = self.cpu
s = cpu.statusWord
# Get the inputs (BLK actually is declared as output though)
BVAL = AwlMemoryObject_asBytes(self.fetchInterfaceFieldByName("BVAL"))
BLK = AwlMemoryObject_asBytes(self.fetchInterfaceFieldByName("BLK"))
# Check ANY pointer S7 magic.
if BVAL[0] != ANYPointerConst.MAGIC:
s.BIE = 0
self.storeInterfaceFieldByName("RET_VAL",
make_AwlMemoryObject_fromScalar(
SystemErrCode.make(SystemErrCode.E_RAREA, 1), 16))
return
if BLK[0] != ANYPointerConst.MAGIC:
s.BIE = 0
self.storeInterfaceFieldByName("RET_VAL",
make_AwlMemoryObject_fromScalar(
SystemErrCode.make(SystemErrCode.E_WAREA, 3), 16))
return
# Get the repetition counts from the ANY pointers
BVAL_repCount = WordPacker.fromBytes(BVAL, 16, 2)
BLK_repCount = WordPacker.fromBytes(BLK, 16, 2)
# Get the data types from the ANY pointers.
try:
BVAL_typeId = ANYPointerConst.typeCode2typeId[BVAL[1]]
BVAL_typeWidth = self.__typeWidths[BVAL_typeId]
if BVAL_typeWidth <= 0:
raise KeyError
except KeyError:
self.storeInterfaceFieldByName("RET_VAL",
make_AwlMemoryObject_fromScalar(
SystemErrCode.make(SystemErrCode.E_RAREA, 1), 16))
s.BIE = 0
return
try:
BLK_typeId = ANYPointerConst.typeCode2typeId[BLK[1]]
BLK_typeWidth = self.__typeWidths[BLK_typeId]
if BLK_typeWidth <= 0:
raise KeyError
except KeyError:
self.storeInterfaceFieldByName("RET_VAL",
make_AwlMemoryObject_fromScalar(
SystemErrCode.make(SystemErrCode.E_WAREA, 3), 16))
s.BIE = 0
return
# Calculate the area sizes (in bytes)
BVAL_len = BVAL_typeWidth * BVAL_repCount
if BVAL_len % 8:
self.storeInterfaceFieldByName("RET_VAL",
make_AwlMemoryObject_fromScalar(
SystemErrCode.make(SystemErrCode.E_RLEN, 1), 16))
s.BIE = 0
return
BVAL_len //= 8
BLK_len = BLK_typeWidth * BLK_repCount
if BLK_len % 8:
self.storeInterfaceFieldByName("RET_VAL",
make_AwlMemoryObject_fromScalar(
SystemErrCode.make(SystemErrCode.E_WLEN, 3), 16))
s.BIE = 0
return
BLK_len //= 8
# Get the pointer dwords from the ANY pointers
BVAL_ptr = Pointer(WordPacker.fromBytes(BVAL, 32, 6))
BVAL_ptrArea = BVAL_ptr.getArea()
BLK_ptr = Pointer(WordPacker.fromBytes(BLK, 32, 6))
BLK_ptrArea = BLK_ptr.getArea()
if BVAL_ptrArea in {PointerConst.AREA_DB, PointerConst.AREA_DI}:
# Get the DB number from BVAL ANY pointer
BVAL_dbNr = WordPacker.fromBytes(BVAL, 16, 4)
# Open the DB
BVAL_ptr.setArea(PointerConst.AREA_DB)
BVAL_ptrArea = BVAL_ptr.getArea()
try:
db = cpu.getDB(BVAL_dbNr)
if not db:
raise KeyError
if (db.permissions & db.PERM_READ) == 0:
raise KeyError
cpu.openDB(BVAL_dbNr, False)
except (AwlSimError, KeyError) as e:
self.storeInterfaceFieldByName("RET_VAL",
make_AwlMemoryObject_fromScalar(
SystemErrCode.make(SystemErrCode.E_DBNOTEXIST, 1), 16))
s.BIE = 0
return
if BLK_ptrArea in {PointerConst.AREA_DB, PointerConst.AREA_DI}:
# Get the DB number from BLK ANY pointer
BLK_dbNr = WordPacker.fromBytes(BLK, 16, 4)
# Open the DB (as DI)
BLK_ptr.setArea(PointerConst.AREA_DI)
BLK_ptrArea = BLK_ptr.getArea()
try:
db = cpu.getDB(BLK_dbNr)
if not db:
raise KeyError
if (db.permissions & db.PERM_WRITE) == 0:
raise KeyError
cpu.openDB(BLK_dbNr, True)
except (AwlSimError, KeyError) as e:
self.storeInterfaceFieldByName("RET_VAL",
make_AwlMemoryObject_fromScalar(
SystemErrCode.make(SystemErrCode.E_DBNOTEXIST, 3), 16))
s.BIE = 0
return
# Copy the data.
BVAL_begin = make_AwlOffset_fromPointerValue(BVAL_ptr.toPointerValue())
BVAL_offset = BVAL_begin.dup()
BVAL_end = BVAL_offset.addInt(BVAL_len, 0)
operType = AwlIndirectOpConst.area2optype((BVAL_ptrArea << PointerConst.AREA_SHIFT),
False)
if BVAL_offset.bitOffset or operType < 0:
# BVAL data is not byte aligned or area is invalid.
self.storeInterfaceFieldByName("RET_VAL",
make_AwlMemoryObject_fromScalar(
SystemErrCode.make(SystemErrCode.E_RALIGN, 1), 16))
s.BIE = 0
return
BVAL_fetchOper = make_AwlOperator(operType, 8, BVAL_offset, None)
BLK_offset = make_AwlOffset_fromPointerValue(BLK_ptr.toPointerValue())
BLK_end = BLK_offset.addInt(BLK_len, 0)
operType = AwlIndirectOpConst.area2optype((BLK_ptrArea << PointerConst.AREA_SHIFT),
False)
if BLK_offset.bitOffset or operType < 0:
# BLK data is not byte aligned or area is invalid.
self.storeInterfaceFieldByName("RET_VAL",
make_AwlMemoryObject_fromScalar(
SystemErrCode.make(SystemErrCode.E_WALIGN, 3), 16))
s.BIE = 0
return
BLK_storeOper = make_AwlOperator(operType, 8, BLK_offset, None)
while BLK_offset.byteOffset < BLK_end.byteOffset:
if BLK_offset.byteOffset + 4 <= BLK_end.byteOffset and\
BVAL_offset.byteOffset + 4 <= BVAL_end.byteOffset:
# Copy one DWORD
BVAL_fetchOper.width = BLK_storeOper.width = 32
elif BLK_offset.byteOffset + 2 <= BLK_end.byteOffset and\
BVAL_offset.byteOffset + 2 <= BVAL_end.byteOffset:
# Copy one WORD
BVAL_fetchOper.width = BLK_storeOper.width = 16
else:
# Copy one BYTE
BVAL_fetchOper.width = BLK_storeOper.width = 8
# Fetch the data from BVAL
try:
data = cpu.fetch(BVAL_fetchOper,
AwlOperatorWidths.WIDTH_MASK_ALL)
except AwlSimError:
self.storeInterfaceFieldByName("RET_VAL",
make_AwlMemoryObject_fromScalar(
SystemErrCode.make(SystemErrCode.E_RAREA, 1), 16))
s.BIE = 0
return
# Store the data to BLK
try:
cpu.store(BLK_storeOper, data,
AwlOperatorWidths.WIDTH_MASK_ALL)
except AwlSimError:
self.storeInterfaceFieldByName("RET_VAL",
make_AwlMemoryObject_fromScalar(
SystemErrCode.make(SystemErrCode.E_WAREA, 3), 16))
s.BIE = 0
return
BVAL_offset.byteOffset += BVAL_fetchOper.width // 8
if BVAL_offset.byteOffset >= BVAL_end.byteOffset:
BVAL_offset.byteOffset = BVAL_begin.byteOffset
BLK_offset.byteOffset += BLK_storeOper.width // 8
# Everything is fine.
self.storeInterfaceFieldByName("RET_VAL",
make_AwlMemoryObject_fromScalar(0, 16))
s.BIE = 1
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