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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_LDD_Z.py,v 1.1 2002/04/04 20:08:53 troth Exp $
#
"""Test the LDD_Z opcode.
"""
import base_test
from registers import Reg, SREG
class LDD_Z_TestFail(base_test.TestFail): pass
class base_LDD_Z(base_test.opcode_test):
"""Generic test case for testing LDD_Z opcode.
LDD_Z - Load Indirect from data space to Register using index Z with
displacement, q.
Operation: Rd <- (Z+q)
opcode is '10q0 qq0d dddd 0qqq' where 0 <= d <= 31, 0 <= q <= 63
Only registers PC and Rd should be changed.
"""
def setup(self):
# Set the register values
self.setup_regs[self.Rd] = 0
self.setup_regs[Reg.R30] = (self.Z & 0xff)
self.setup_regs[Reg.R31] = (self.Z >> 8)
# set up the val in memory
self.mem_byte_write( self.Z + self.q, self.Vd )
# Return the raw opcode
op_q = ((self.q & 0x20) << 8) | ((self.q & 0x18) << 7) | (self.q & 0x3)
return 0x8000 | (self.Rd << 4) | op_q
def analyze_results(self):
self.reg_changed.extend( [self.Rd] )
# check that result is correct
expect = self.Vd
got = self.anal_regs[self.Rd]
if expect != got:
self.fail('LDD_Z: expect=%02x, got=%02x' % (expect, got))
#
# Template code for test case.
# The fail method will raise a test specific exception.
#
template = """
class LDD_Z_r%02d_Z%04x_q%02x_v%02x_TestFail(LDD_Z_TestFail): pass
class test_LDD_Z_r%02d_Z%04x_q%02x_v%02x(base_LDD_Z):
Rd = %d
Z = 0x%x
q = 0x%x
Vd = 0x%x
def fail(self,s):
raise LDD_Z_r%02d_Z%04x_q%02x_v%02x_TestFail, s
"""
#
# automagically generate the test_LDD_Z_* class definitions.
#
code = ''
for d in range(0,32,4):
for z in (0x10f, 0x1ff):
for q in range(0,64,0x10):
for v in (0xaa, 0x55):
args = (d,z,q,v)*4
code += template % args
exec code
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