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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_POP.py,v 1.1 2002/03/26 05:26:54 troth Exp $
#
"""Test the POP opcode.
"""
import base_test
from registers import Reg
class POP_TestFail(base_test.TestFail): pass
class base_POP(base_test.opcode_stack_test):
"""Generic test case for testing POP opcode.
The derived class must provide the reg member and the fail method.
POP - Pop a register from the stack
Rd <- STACK
PC <- PC + 1
SP <- SP + 1
opcode is '1001 000d dddd 1111'
"""
def setup(self):
# zero out the register is question
self.setup_regs[self.Rd] = 0
# put the value on the stack
self.setup_write_to_current_stack(self.k)
return 0x900f | self.Rd << 4
def analyze_results(self):
self.reg_changed.extend( [ self.Rd, Reg.SP ] )
# check that SP changed correctly
expect = self.setup_regs[Reg.SP] + 1
got = self.anal_regs[Reg.SP]
if got != expect:
self.fail('POP stack push failed: expect=%04x, got=%04x' % (
expect, got ))
# check that Rd now has k
expect = self.k
got = self.anal_regs[self.Rd]
if got != expect:
self.fail('POP operation failed: expect=%02x, got=%02x' % (
expect, got ))
#
# Template code for test case.
# The fail method will raise a test specific exception.
#
template = """class POP_r%02d_%02x_TestFail(POP_TestFail): pass
class test_POP_r%02d_%02x(base_POP):
Rd = %d
k = 0x%x
def fail(self,s):
raise POP_r%02d_%02x_TestFail, s
"""
#
# automagically generate the test_POP_* class definitions
#
code = ''
for rd in range(32):
for k in (0x55,0xaa):
args = (rd,k)*4
code += template % args
exec code
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