45 lines
1.5 KiB
Python
45 lines
1.5 KiB
Python
from bits import sign_extend
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from bits import mask_from_bits
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def generate_bit(bit):
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if not bit.value and not bit.mask:
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yield f"public static int {bit.bit_name}(int n) {{"
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yield f"return (n >> {min(bit.bits)}) & {sign_extend(mask_from_bits(bit.bits), 32)};"
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yield "}"
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elif bit.value:
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assert (bit.value is None) ^ (bit.mask is None), bit
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yield f"public static final int {bit.bit_name} = {bit.value << min(bit.bits)};"
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elif bit.mask:
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assert (bit.value is None) ^ (bit.mask is None), bit
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yield f"public static int {bit.bit_name}(int n) {{"
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if type(bit.mask) is str:
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yield f"return (n & {sign_extend(mask_from_bits(bit.bits), 32)}) << {min(bit.bits)};"
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else:
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yield f"return (n & {bit.mask}) << {min(bit.bits)};"
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yield "}"
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else:
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assert False, bit
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def generate_bits(bits):
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for bit in bits:
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yield from generate_bit(bit)
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def generate_enums(enum_group):
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for enum_name, bits in enum_group.items():
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if enum_name == "":
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yield from generate_bits(bits)
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else:
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yield f"public class {enum_name} {{"
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yield from generate_bits(bits)
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yield "}"
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def generate_registers(package_name, class_name, group):
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yield f"package sega.dreamcast.{package_name};"
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yield ""
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yield f"public class {class_name} {{"
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for register_name, enum_group in group.items():
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yield f"public class {register_name} {{"
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yield from generate_enums(enum_group)
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yield "}"
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yield "}"
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