def _enum(isa: Enum) -> int:
asm = {}
dsm = {}
layout = {}
free = []
used = set()
i_map = {}
for inst in isa.enumerate():
val = inst._value_
if isinstance(val, int):
used.add(val)
i_map[inst] = val
else:
assert isinstance(val, EnumMeta.Auto)
free.append(inst)
c = 0
while free:
inst = free.pop()
while c in used:
c += 1
used.add(c)
i_map[inst] = c
width = max(used).bit_length()
for inst in isa.enumerate():
layout[inst] = (0, width)
opcode = i_map[inst]
asm[inst] = opcode
dsm[opcode] = inst
def assembler(inst):
return asm[inst]
def disassembler(opcode):
return dsm[opcode]
return assembler, disassembler, width, layout
def _enum(isa: Enum):
encoding = {}
decoding = {}
layout = {}
free = []
used = set()
i_map = {}
for inst in isa.enumerate():
if isinstance(inst.value, int):
used.add(inst.value)
i_map[inst] = inst.value
else:
assert isinstance(inst.value, EnumMeta.Auto)
free.append(inst)
c = 0
while free:
inst = free.pop()
while c in used:
c += 1
used.add(c)
i_map[inst] = c
width = max(used).bit_length()
for inst in isa.enumerate():
layout[inst] = (0, width, None)
opcode = BitVector[width](i_map[inst])
encoding[inst] = opcode
decoding[opcode] = inst
def assembler(inst):
return encoding[inst]
def disassembler(bv):
return decoding[bv]
return assembler, disassembler, width, layout