def test_number_label_bin_offset(self):
parser = AddressParser()
parser.labels = {'foo': 0xC000}
self.assertEqual(0xC003, parser.number('foo+%00000011'))
self.assertEqual(0xBFFD, parser.number('foo-%00000011'))
self.assertEqual(0xC003, parser.number('foo + %00000011'))
self.assertEqual(0xBFFD, parser.number('foo - %00000011'))
def test_number_bad_label_with_offset(self):
parser = AddressParser()
try:
parser.number('bad_label+3')
self.fail()
except KeyError as exc:
self.assertEqual('Label not found: bad_label', exc.args[0])
def test_number_bad_label_syntax(self):
parser = AddressParser()
parser.labels = {'foo': 0xFFFF}
try:
parser.number('#$foo')
self.fail()
except KeyError as exc:
self.assertEqual('Label not found: #$foo', exc.args[0])
def disassemble(self, bytes, pc=0, mpu=None):
if mpu is None:
mpu = MPU()
address_parser = AddressParser()
disasm = Disassembler(mpu, address_parser)
mpu.memory[pc:len(bytes) - 81] = bytes
return disasm.instruction_at(pc)
def test_number_label_offset_default_radix(self):
parser = AddressParser()
parser.labels = {'foo': 0xC000}
parser.radix = 16
self.assertEqual(0xC010, parser.number('foo+10'))
self.assertEqual(0xBFF0, parser.number('foo-10'))
self.assertEqual(0xC010, parser.number('foo + 10'))
self.assertEqual(0xBFF0, parser.number('foo - 10'))
parser.radix = 10
self.assertEqual(0xC00A, parser.number('foo+10'))
self.assertEqual(0xBFF6, parser.number('foo-10'))
self.assertEqual(0xC00A, parser.number('foo + 10'))
self.assertEqual(0xBFF6, parser.number('foo - 10'))
def __init__(self, mpu, address_parser=None):
if address_parser is None:
address_parser = AddressParser()
self._mpu = mpu
self._address_parser = address_parser
self.addrWidth = mpu.ADDR_WIDTH
self.byteWidth = mpu.BYTE_WIDTH
self.addrFmt = mpu.ADDR_FORMAT
self.byteFmt = mpu.BYTE_FORMAT
self.addrMask = mpu.addrMask
self.byteMask = mpu.byteMask
def __init__(self, mpu, address_parser=None):
""" If a configured AddressParser is passed, symbolic addresses
may be used in the assembly statements.
"""
self._mpu = mpu
if address_parser is None:
address_parser = AddressParser()
self._address_parser = address_parser
self._addressing = []
numchars = mpu.BYTE_WIDTH / 4 # 1 byte = 2 chars in hex
for mode, format in self.Addressing:
pat = "^" + re.escape(format) + "$"
pat = pat.replace('00', '0{%d}' % numchars)
pat = pat.replace('FF', '([0-9A-F]{%d})' % numchars)
self._addressing.append([mode, re.compile(pat)])
def test_number_dec_literal(self):
parser = AddressParser()
self.assertEqual(49152, parser.number('+49152'))
def test_number_hex_literal(self):
parser = AddressParser()
self.assertEqual(49152, parser.number('$c000'))
def test_range_start_exceeds_end(self):
parser = AddressParser(labels={})
self.assertEqual((0xFFD2, 0xFFD4), parser.range('ffd4:ffd2'))
def test_number_constrains_address_at_maxwidth_24(self):
parser = AddressParser()
parser.maxwidth = 24
parser.labels = {'foo': 0xFFFFFF}
self.assertRaises(OverflowError, parser.number, 'foo+5')
def assemble(self, statement, pc=0000, mpu=None):
if mpu is None:
mpu = MPU()
address_parser = AddressParser()
assembler = Assembler(mpu, address_parser)
return assembler.assemble(statement, pc)
def test_maxwidth_defaults_to_16_bits(self):
parser = AddressParser()
self.assertEqual(16, parser.maxwidth)
self.assertEqual(0xFFFF, parser._maxaddr)
def test_number_label(self):
parser = AddressParser()
parser.labels = {'foo': 0xC000}
self.assertEqual(0xC000, parser.number('foo'))
def test_range_one_number(self):
parser = AddressParser(labels={})
self.assertEqual((0xFFD2, 0xFFD2), parser.range('ffd2'))
def test_label_for_returns_alternate_default(self):
parser = AddressParser(labels={})
self.assertEqual('foo', parser.label_for(0xFFD2, 'foo'))
def test_label_for_returns_none_by_default(self):
parser = AddressParser(labels={})
self.assertEqual(None, parser.label_for(0xFFD2))
def test_label_for_returns_label(self):
parser = AddressParser(labels={'chrout': 0xFFD2})
self.assertEqual('chrout', parser.label_for(0xFFD2))
def test_adderss_for_returns_alternate_default(self):
parser = AddressParser(labels={})
self.assertEqual('foo', parser.address_for('chrout', 'foo'))
def test_address_for_returns_none_by_default(self):
parser = AddressParser(labels={})
self.assertEqual(None, parser.address_for('chrout'))
def test_address_for_returns_address(self):
parser = AddressParser(labels={'chrout': 0xFFD2})
self.assertEqual(0xFFD2, parser.address_for('chrout'))
def test_number_bin_literal(self):
parser = AddressParser()
self.assertEqual(129, parser.number('%10000001'))
def test_number_default_radix(self):
parser = AddressParser()
parser.radix = 10
self.assertEqual(10, parser.number('10'))
parser.radix = 16
self.assertEqual(16, parser.number('10'))
def test_range_one_label(self):
parser = AddressParser(labels={'chrout': 0xFFD2})
self.assertEqual((0xFFD2, 0xFFD2), parser.range('chrout'))
def test_maxwidth_can_be_set_in_constructor(self):
parser = AddressParser(maxwidth=24)
self.assertEqual(24, parser.maxwidth)
self.assertEqual(0xFFFFFF, parser._maxaddr)
def test_range_two_numbers(self):
parser = AddressParser(labels={})
self.assertEqual((0xFFD2, 0xFFD4), parser.range('ffd2:ffd4'))
def test_ctor_uses_provided_mpu_and_address_parser(self):
mpu = MPU()
address_parser = AddressParser()
asm = Assembler(mpu, address_parser)
self.assertTrue(asm._mpu is mpu)
self.assertTrue(asm._address_parser is address_parser)
def test_range_mixed(self):
parser = AddressParser(labels={'chrout': 0xFFD2})
self.assertEqual((0xFFD2, 0xFFD4), parser.range('chrout:ffd4'))
def test_maxwidth_setter(self):
parser = AddressParser()
parser.maxwidth = 24
self.assertEqual(24, parser.maxwidth)
self.assertEqual(0xFFFFFF, parser._maxaddr)
def test_number_constrains_address_at_zero_or_above(self):
parser = AddressParser()
self.assertRaises(OverflowError, parser.number, '-1')