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#!/usr/bin/python -O
"""
# Galemu testcase generator
#
# Copyright (C) 2008 Michael Buesch <mb@bu3sch.de>
#
# 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, see <http://www.gnu.org/licenses/>.
"""
import sys
from pdsparser import *
import galemu
class TestgenEx(Exception):
pass
class ChipState:
def __init__(self, testgen):
self.testgen = testgen
self.testCounter = 0
# Init the input pin states
self.inputs = {}
for nr in testgen.galClass.getInputPinNumbers():
self.inputs[nr] = False
# Init the output pin states
# self.outputs = {}
# for nr in testgen.galClass.getOutputPinNumbers():
# self.outputs[nr] = True
def changeInputs(self, states):
"""Set some input signals to new states.
Expects "states" as a dict of states { pinNumber : False|True, ... }"""
for pinNr in states.keys():
self.inputs[pinNr] = states[pinNr]
self.emitTestcase(emitInput=True)
def validateOutputs(self, states):
"""Validate all output signals.
Expects "states" as a dict of states { pinNumber : False|True, ...}"""
# for pinNr in states.keys():
# self.outputs[pinNr] = states[pinNr]
self.outputs = states
self.emitTestcase(emitOutput=True)
def emitTestcase(self, emitInput=False, emitOutput=False):
self.testgen.addOutString("%d {\n" % self.testCounter)
self.testCounter += 1
if emitInput:
self.testgen.addOutString("\tINPUT\t")
ip = self.inputs.keys()[:]
ip.sort()
for pinNr in ip:
self.testgen.addOutString("%d=%d " % (pinNr, self.inputs[pinNr]))
self.testgen.addOutString("\n")
if emitOutput:
self.testgen.addOutString("\tOUTPUT\t")
op = self.outputs.keys()[:]
op.sort()
for pinNr in op:
self.testgen.addOutString("%d=%d " % (pinNr, self.outputs[pinNr]))
self.testgen.addOutString("\n")
self.testgen.addOutString("}\n")
class TestGen:
def __init__(self, pdsText):
self.pds = Pds(pdsText)
if not self.pds.sim:
raise TestgenEx(".PDS file does not contain a SIMULATION segment")
if not self.pds.sim.getItems():
raise TestgenEx(".PDS file SIMULATION segment is empty")
if not self.pds.chip:
raise TestgenEx(".PDS file does not contain a CHIP declaration")
try:
self.galClass = galemu.selectGalClassObject(self.pds.chip[1])
except galemu.GalemuEx, e:
raise TestgenEx(e.message)
self.state = ChipState(self)
def addOutString(self, text):
self.out += text
def sigs2str(self, sigs):
text = ""
for sig in sigs:
if sig.inverted:
text += "/"
text += sig.name + " "
return text
def generateSimfile(self):
self.genPinNumberDicts()
# Generate the header
self.out = "# Galemu testcase"
if self.pds.title:
self.out += " automatically generated from %s\n" % self.pds.title
self.out += "# %s\n" % self.pds.chip[1]
self.out += "\n"
# Generate the testcases
for item in self.pds.sim.getItems():
self.handleSimItem(item)
return self.out
def handleSimItem(self, item):
"Handle a SimSeg().item"
type = item[0]
args = item[1:]
if type == SimSeg.S_TRACE_ON:
pass # Nothing
elif type == SimSeg.S_TRACE_OFF:
pass # Nothing
elif type == SimSeg.S_SETF:
self.out += "# SETF %s\n" % self.sigs2str(args)
self.handleSetf(args)
elif type == SimSeg.S_CHECK:
self.out += "# CHECK %s\n" % self.sigs2str(args)
self.handleCheck(args)
elif type == SimSeg.S_PRELOAD:
self.out += "# PRELOAD %s\n" % self.sigs2str(args)
self.handlePreload(args)
elif type == SimSeg.S_CLOCKF:
self.out += "# CLOCKF %s\n" % self.sigs2str(args)
self.handleClockf(args)
else:
raise TestgenEx("Internal error: Unknown SimSeg item type")
def handleSetf(self, args):
newStates = {}
for sig in args:
if sig.name not in self.inputMap:
raise TestgenEx("SETF: Signal is not an input")
pinNr = self.inputMap[sig.name]
if sig.inverted:
state = False
else:
state = True
newStates[pinNr] = state
self.state.changeInputs(newStates)
def handleCheck(self, args):
checkStates = {}
for sig in args:
if sig.name not in self.outputMap:
#FIXME We ignore this for now
#raise TestgenEx("CHECK: Signal not an output")
continue
pinNr = self.outputMap[sig.name]
if sig.inverted:
state = False
else:
state = True
checkStates[pinNr] = state
self.state.validateOutputs(checkStates)
def handlePreload(self, args):
pass#TODO
def handleClockf(self, args):
# Generate LOW-HIGH-LOW pulses. Use the setf subroutine.
pulses = (False, True, False)
for pulse in pulses:
for sig in args:
sig.inverted = not pulse
self.handleSetf(args)
def genPinNumberDicts(self):
"Generate pinname-to-pinnumber dicts for input and output pins"
inputs = self.galClass.getInputPinNumbers()
outputs = self.galClass.getOutputPinNumbers()
vcc = self.galClass.getVccPinNumber()
gnd = self.galClass.getGndPinNumber()
self.inputMap = {}
self.outputMap = {}
for pin in self.pds.pins:
number = pin[0]
name = pin[1]
if number in inputs:
self.inputMap[name] = number
elif number in outputs:
self.outputMap[name] = number
elif number == vcc or number == gnd:
pass # nothing
else:
raise TestgenEx("Pin %d is neither known as input nor output" % number)
def main(argv):
try:
text = sys.stdin.read()
gen = TestGen(text)
text = gen.generateSimfile()
sys.stdout.write(text)
except PdsEx, e:
raise TestgenEx(e.message)
return 0
if __name__ == "__main__":
try:
sys.exit(main(sys.argv))
except TestgenEx, e:
sys.stderr.write("[EXCEPTION]: " + e.message + "\n")
sys.exit(1)
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