mirror of
https://github.com/Ed94/Odin.git
synced 2026-06-13 01:21:38 -07:00
Laytan
47 lines
921 B
Odin
47 lines
921 B
Odin
//+build riscv64
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//+build linux
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package sysinfo
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import "base:intrinsics"
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import "core:sys/linux"
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@(init, private)
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init_cpu_features :: proc() {
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fd, err := linux.open("/proc/self/auxv", {})
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if err != .NONE { return }
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defer linux.close(fd)
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// This is probably enough right?
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buf: [4096]byte
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n, rerr := linux.read(fd, buf[:])
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if rerr != .NONE || n == 0 { return }
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ulong :: u64
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AT_HWCAP :: 16
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// TODO: using these we could get more information than just the basics.
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// AT_HWCAP2 :: 26
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// AT_HWCAP3 :: 29
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// AT_HWCAP4 :: 30
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auxv := buf[:n]
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for len(auxv) >= size_of(ulong)*2 {
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key := intrinsics.unaligned_load((^ulong)(&auxv[0]))
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val := intrinsics.unaligned_load((^ulong)(&auxv[size_of(ulong)]))
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auxv = auxv[2*size_of(ulong):]
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if key != AT_HWCAP {
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continue
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}
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cpu_features = transmute(CPU_Features)(val)
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break
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}
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}
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@(init, private)
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init_cpu_name :: proc() {
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cpu_name = "RISCV64"
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}
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