a9653c8497
* wip * reorg * update sv int * apb4 working * apb3 working * version bump + ignore runner warning * remove redundant check * adding log on failure * cleaning up verilator version issue * devcontainer * Fix missing libpython in GitHub Actions CI environment (#21) * Initial plan * Install libpython in GitHub Actions for cocotb tests Co-authored-by: arnavsacheti <36746504+arnavsacheti@users.noreply.github.com> --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: arnavsacheti <36746504+arnavsacheti@users.noreply.github.com> --------- Co-authored-by: Copilot <198982749+Copilot@users.noreply.github.com>
49 lines
1.7 KiB
Python
49 lines
1.7 KiB
Python
from typing import Literal
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class SVInt:
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def __init__(self, value: int, width: int | None = None) -> None:
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self.value = value
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self.width = width
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def __str__(self) -> str:
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if self.width is not None:
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# Explicit width
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return f"{self.width}'h{self.value:x}"
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elif self.value.bit_length() > 32:
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# SV standard only enforces that unsized literals shall be at least 32-bits
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# To support larger literals, they need to be sized explicitly
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return f"{self.value.bit_length()}'h{self.value:x}"
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else:
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return f"'h{self.value:x}"
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def __add__(self, other: "SVInt") -> "SVInt":
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if self.width is not None and other.width is not None:
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return SVInt(self.value + other.value, max(self.width, other.width))
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else:
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return SVInt(self.value + other.value, None)
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def __sub__(self, other: "SVInt") -> "SVInt":
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if self.width is not None and other.width is not None:
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return SVInt(self.value - other.value, max(self.width, other.width))
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else:
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return SVInt(self.value - other.value, None)
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def __len__(self) -> int:
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if self.width is not None:
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return self.width
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else:
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return self.value.bit_length()
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def to_bytes(self, byteorder: Literal["little", "big"] = "little") -> bytes:
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byte_length = (self.value.bit_length() + 7) // 8
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return self.value.to_bytes(byte_length, byteorder)
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def __eq__(self, other: object) -> bool:
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if not isinstance(other, SVInt):
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return NotImplemented
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return self.value == other.value and self.width == other.width
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def __hash__(self) -> int:
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return hash((self.value, self.width))
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