You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
89 lines
2.4 KiB
Python
89 lines
2.4 KiB
Python
from amaranth import *
|
|
from amaranth.asserts import AnyConst
|
|
from amaranth.hdl.ast import ValueCastable
|
|
|
|
|
|
class Instruction_I(ValueCastable):
|
|
po = None
|
|
li = None
|
|
aa = None
|
|
lk = None
|
|
|
|
def __init_subclass__(cls, *, po, aa, lk):
|
|
cls.po = Const(po, unsigned(6))
|
|
cls.aa = Const(aa, 1)
|
|
cls.lk = Const(lk, 1)
|
|
|
|
def __init__(self):
|
|
self.li = AnyConst(signed(24))
|
|
|
|
@ValueCastable.lowermethod
|
|
def as_value(self):
|
|
return Cat(self.lk, self.aa, self.li, self.po)
|
|
|
|
|
|
class Instruction_B(ValueCastable):
|
|
po = None
|
|
bo = None
|
|
bi = None
|
|
bd = None
|
|
aa = None
|
|
lk = None
|
|
|
|
def __init_subclass__(cls, *, po, aa, lk):
|
|
cls.po = Const(po, unsigned(6))
|
|
cls.aa = Const(aa, 1)
|
|
cls.lk = Const(lk, 1)
|
|
|
|
def __init__(self):
|
|
self.bo = AnyConst(unsigned( 5))
|
|
self.bi = AnyConst(unsigned( 5))
|
|
self.bd = AnyConst( signed(14))
|
|
|
|
@ValueCastable.lowermethod
|
|
def as_value(self):
|
|
return Cat(self.lk, self.aa, self.bd, self.bi, self.bo, self.po)
|
|
|
|
|
|
class Instruction_XL_b(ValueCastable):
|
|
po = None
|
|
bo = None
|
|
bi = None
|
|
_0 = None
|
|
bh = None
|
|
xo = None
|
|
lk = None
|
|
|
|
def __init_subclass__(cls, *, po, xo, lk):
|
|
cls.po = Const(po, unsigned(6))
|
|
cls.xo = Const(xo, unsigned(9))
|
|
cls.lk = Const(1)
|
|
|
|
def __init__(self):
|
|
self.bo = AnyConst(unsigned(5))
|
|
self.bi = AnyConst(unsigned(5))
|
|
self._0 = AnyConst(unsigned(3))
|
|
self.bh = AnyConst(unsigned(2))
|
|
|
|
@ValueCastable.lowermethod
|
|
def as_value(self):
|
|
return Cat(self.lk, self.xo, self.bh, self._0, self.bi, self.bo, self.po)
|
|
|
|
|
|
class B (Instruction_I, po=18, aa=0, lk=0): pass
|
|
class BA (Instruction_I, po=18, aa=1, lk=0): pass
|
|
class BL (Instruction_I, po=18, aa=0, lk=1): pass
|
|
class BLA (Instruction_I, po=18, aa=1, lk=1): pass
|
|
|
|
class BC (Instruction_B, po=16, aa=0, lk=0): pass
|
|
class BCA (Instruction_B, po=16, aa=1, lk=0): pass
|
|
class BCL (Instruction_B, po=16, aa=0, lk=1): pass
|
|
class BCLA (Instruction_B, po=16, aa=1, lk=1): pass
|
|
|
|
class BCLR (Instruction_XL_b, po=19, xo= 16, lk=0): pass
|
|
class BCLRL (Instruction_XL_b, po=19, xo= 16, lk=1): pass
|
|
class BCCTR (Instruction_XL_b, po=19, xo=528, lk=0): pass
|
|
class BCCTRL (Instruction_XL_b, po=19, xo=528, lk=1): pass
|
|
class BCTAR (Instruction_XL_b, po=19, xo=560, lk=0): pass
|
|
class BCTARL (Instruction_XL_b, po=19, xo=560, lk=1): pass
|