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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_BST.py,v 1.2 2002/02/20 21:28:31 troth Exp $
#
"""Test the BST opcode.
"""
import base_test
from registers import Reg, SREG
class BST_TestFail(base_test.TestFail): pass
class base_BST(base_test.opcode_test):
"""Generic test case for testing BST opcode.
Bit store from bit in register to T flag in SREG.
opcode is '1111 101d dddd 0bbb' where d is register and b is the register bit.
Only registers PC and SREG should be changed.
"""
def setup(self):
# set SREG and the given register's bits to complement of expected T value
if self.T == 0:
self.setup_regs[Reg.SREG] = 0xff
self.setup_regs[self.reg] = 0xff & ~(1 << self.bit)
else:
self.setup_regs[Reg.SREG] = 0x00
self.setup_regs[self.reg] = (1 << self.bit)
return 0xFA00 | (self.reg << 4) | self.bit
def analyze_results(self):
self.reg_changed.append(Reg.SREG)
# check that register value is correct
if self.T == 0:
expect = 0xff & ~(1 << SREG.T)
else:
expect = (1 << SREG.T)
got = self.anal_regs[Reg.SREG]
if expect != got:
self.fail('r%02d bit %d not T(%d): expect=%02x, got=%02x' % (
self.reg, self.bit, self.T, expect, got))
#
# Template code for test case.
# The fail method will raise a test specific exception.
#
template = """
class BST_r%02d_bit%d_T%d_TestFail(BST_TestFail): pass
class test_BST_r%02d_bit%d_T%d(base_BST):
reg = %d
bit = %d
T = %d
def fail(self,s):
raise BST_r%02d_bit%d_T%d_TestFail, s
"""
#
# automagically generate the test_BST_rNN_bitN_T[01] class definitions
#
code = ''
for t in (0,1):
for r in range(32):
for b in range(8):
code += template % (r,b,t, r,b,t, r,b,t, r,b,t)
exec code
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