def test_InstFormat_get_value():
test_format = InstFormat(('field1', Unsigned(2)), ('field2', Unsigned(3)),
('field3', Unsigned(4)))
value1 = test_format.get_value(field3=4)
assert value1 == 4
value2 = test_format.get_value(field2=7)
assert value2 == 0x70
def test_InstFormat_get_mask():
test_format = InstFormat(('field1', Unsigned(2)), ('field2', Unsigned(3)),
('field3', Unsigned(4)))
mask1 = test_format.get_mask(field3=0)
assert mask1 == 0xf
mask2 = test_format.get_mask(field1=2)
assert mask2 == 0x180
def test_InstFormat_get_value():
test_format = InstFormat(
('field1', Unsigned(2)),
('field2', Unsigned(3)),
('field3', Unsigned(4))
)
value1 = test_format.get_value(field3=4)
assert value1 == 4
value2 = test_format.get_value(field2=7)
assert value2 == 0x70
def test_InstFormat_get_mask():
test_format = InstFormat(
('field1', Unsigned(2)),
('field2', Unsigned(3)),
('field3', Unsigned(4))
)
mask1 = test_format.get_mask(field3=0)
assert mask1 == 0xf
mask2 = test_format.get_mask(field1=2)
assert mask2 == 0x180
class Mips(Processor):
main_memory = Memory(65536, Unsigned(32))
ir = InstructionPointer(Unsigned(32), main_memory)
r = RegisterBank(32, Unsigned(32))
hi = Register(Unsigned(32))
lo = Register(Unsigned(32))
I_Type = InstFormat(('op', Unsigned(6)), ('rs', Unsigned(5)),
('rt', Unsigned(5)), ('immediate', Unsigned(16)))
R_Type = InstFormat(('op', Unsigned(6)), ('rs', Unsigned(5)),
('rt', Unsigned(5)), ('rd', Unsigned(5)),
('sa', Unsigned(5)), ('funct', Unsigned(6)))
@instruction(R_Type, ir, op=0, rs=0, rt=0, rd=0, sa=0, funct=0x0)
@mnemonic("nop")
def nop():
pass
@instruction(R_Type, ir, op=0, sa=0, funct=0)
@mnemonic("move")
def move():
pass
@instruction(R_Type, ir, op=0, sa=0, funct=0x20)
@mnemonic("add {rd}, {rs}, {rt}")
#or: "add", "rd":Register, "rs":Register ??
def add():
pass
@instruction(R_Type, ir, op=0, sa=0, funct=0x24)
@mnemonic("and {rd}, {rs}, {rt}")
def and_instr():
pass
@instruction(I_Type, ir, op=9)
@mnemonic("addiu {rt}, {rs}, {imm}")
def addiu(self, **kwargs):
pass
def test_InstFormat():
test_format = InstFormat(('field1', Unsigned(2)), ('field2', Unsigned(3)),
('field3', Unsigned(4)))
assert test_format.size == 9
assert test_format.fields[0].mask == 0x180
assert test_format.fields[0].position == 7
assert test_format.fields[0].name == "field1"
assert test_format.fields[1].mask == 0x70
assert test_format.fields[1].position == 4
assert test_format.fields[1].name == "field2"
assert test_format.fields[2].mask == 0xf
assert test_format.fields[2].position == 0
assert test_format.fields[2].name == "field3"