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102 lines
1.6 KiB
Odin
102 lines
1.6 KiB
Odin
package sysinfo
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CPU_Feature :: enum u64 {
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// Bit-Manipulation ISA Extensions v1.
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Zba = 3,
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Zbb,
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Zbs,
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// CMOs (ratified).
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Zicboz,
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// Bit-Manipulation ISA Extensions v1.
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Zbc,
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// Scalar Crypto ISA extensions v1.
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Zbkb,
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Zbkc,
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Zbkx,
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Zknd,
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Zkne,
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Zknh,
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Zksed,
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Zksh,
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Zkt,
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// Cryptography Extensions Volume II v1.
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Zvbb,
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Zvbc,
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Zvkb,
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Zvkg,
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Zvkned,
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Zvknha,
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Zvknhb,
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Zvksed,
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Zvksh,
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Zvkt,
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// ISA Manual v1.
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Zfh,
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Zfhmin,
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Zihintntl,
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// ISA manual (ratified).
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Zvfh,
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Zvfhmin,
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Zfa,
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Ztso,
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// Atomic Compare-and-Swap Instructions Manual (ratified).
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Zacas,
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Zicond,
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// ISA manual (ratified).
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Zihintpause,
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// Vector Extensions Manual v1.
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Zve32x,
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Zve32f,
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Zve64x,
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Zve64f,
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Zve64d,
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// ISA manual (ratified).
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Zimop,
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// Code Size Reduction (ratified).
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Zca,
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Zcb,
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Zcd,
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Zcf,
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// ISA manual (ratified).
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Zcmop,
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Zawrs,
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// Base features, don't think this is ever not here.
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I,
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// Integer multiplication and division, currently required by Odin.
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M,
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// Atomics.
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A,
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// Single precision floating point, currently required by Odin.
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F,
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// Double precision floating point, currently required by Odin.
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D,
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// Compressed instructions.
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C,
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// Vector operations.
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V,
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// Indicates Misaligned Scalar Loads will not trap the program.
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Misaligned_Supported,
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// Indicates Hardware Support for Misaligned Scalar Loads.
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Misaligned_Fast,
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}
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CPU_Features :: distinct bit_set[CPU_Feature; u64]
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// Looking up CPU features is expensive on RISCV, and `atomic_load_explicit`
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// is also a barrier, so we're doing this lookup only once, before `main()`
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@(private) _features: CPU_Features
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@(private) _features_ok: bool |