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#! /usr/bin/env python
###############################################################################
#
# simulavr - A simulator for the Atmel AVR family of microcontrollers.
# Copyright (C) 2001, 2002 Theodore A. Roth
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
###############################################################################
#
# $Id: test_LPM.py,v 1.1 2002/04/05 01:05:48 troth Exp $
#
"""Test the LPM opcode.
"""
import base_test
from registers import Reg, SREG
class LPM_TestFail(base_test.TestFail): pass
class base_LPM(base_test.opcode_test):
"""Generic test case for testing LPM opcode.
LPM - Load Program Memory
Operation: R0 <- (Z)
opcode is '1001 0101 1100 1000'
Only registers PC and R00 should be changed.
"""
def setup(self):
# Set the register values
self.setup_regs[Reg.R00] = 0
self.setup_regs[Reg.R30] = (self.Z & 0xff)
self.setup_regs[Reg.R31] = (self.Z >> 8)
# set up the val in memory
self.prog_word_write( self.Z & 0xfffe, 0xaa55 )
# Return the raw opcode
return 0x95C8
def analyze_results(self):
self.reg_changed.extend( [Reg.R00] )
# check that result is correct
if self.Z & 0x1:
expect = 0xaa
else:
expect = 0x55
got = self.anal_regs[Reg.R00]
if expect != got:
self.fail('LPM: expect=%02x, got=%02x' % (expect, got))
#
# Template code for test case.
# The fail method will raise a test specific exception.
#
template = """
class LPM_Z%04x_TestFail(LPM_TestFail): pass
class test_LPM_Z%04x(base_LPM):
Z = 0x%x
def fail(self,s):
raise LPM_Z%04x_TestFail, s
"""
#
# automagically generate the test_LPM_* class definitions.
#
code = ''
for z in (0x10, 0x11, 0x100, 0x101):
args = (z,)*4
code += template % args
exec code
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