70 lines
2.2 KiB
Python
70 lines
2.2 KiB
Python
from os import path
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from functools import partial
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import parse_bits
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class BaseRegister:
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def set(self, code, value, *, code_ix, descriptor):
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if type(descriptor.bits) is int:
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mask = 1
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low = descriptor.bits
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else:
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high, low = descriptor.bits
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assert high > low
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mask_length = (high - low) + 1
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mask = (1 << mask_length) - 1
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code_value = code[code_ix]
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assert (code_value >> low) & mask == 0
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assert value & mask == value
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code[code_ix] |= (value & mask) << low
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_descriptor_indicies = {
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"US_CMN_INST": 0,
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"US_ALU_RGB_ADDR": 1,
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"US_ALU_ALPHA_ADDR": 2,
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"US_ALU_RGB_INST": 3,
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"US_ALU_ALPHA_INST": 4,
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"US_ALU_RGBA_INST": 5,
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"US_TEX_INST": 1,
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"US_TEX_ADDR": 2,
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"US_TEX_ADDR_DXDY": 3,
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"US_FC_INST": 2,
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"US_FC_ADDR": 3,
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}
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def parse_register(register_name):
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base = path.dirname(__file__)
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filename = path.join(base, "..", "..", "bits", register_name.lower() + ".txt")
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l = list(parse_bits.parse_file_fields(filename))
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cls = type(register_name, (BaseRegister,), {})
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instance = cls()
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descriptors = list(parse_bits.aggregate(l))
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code_ix = _descriptor_indicies[register_name]
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for descriptor in descriptors:
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setattr(instance, descriptor.field_name,
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partial(instance.set, code_ix=code_ix, descriptor=descriptor))
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func = getattr(instance, descriptor.field_name)
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for pv_value, (pv_name, _) in descriptor.possible_values.items():
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if pv_name is not None:
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setattr(func, pv_name, pv_value)
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assert getattr(instance, "descriptors", None) is None
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instance.descriptors = descriptors
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return instance
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US_CMN_INST = parse_register("US_CMN_INST")
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US_ALU_RGB_ADDR = parse_register("US_ALU_RGB_ADDR")
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US_ALU_ALPHA_ADDR = parse_register("US_ALU_ALPHA_ADDR")
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US_ALU_RGB_INST = parse_register("US_ALU_RGB_INST")
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US_ALU_ALPHA_INST = parse_register("US_ALU_ALPHA_INST")
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US_ALU_RGBA_INST = parse_register("US_ALU_RGBA_INST")
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US_TEX_INST = parse_register("US_TEX_INST")
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US_TEX_ADDR = parse_register("US_TEX_ADDR")
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US_TEX_ADDR_DXDY = parse_register("US_TEX_ADDR_DXDY")
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US_FC_INST = parse_register("US_FC_INST")
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US_FC_ADDR = parse_register("US_FC_ADDR")
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