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  1. Wikipedia
    https://en.wikipedia.org/wiki/CPUID

    CPUID - Wikipedia

  2. Clang
    https://clang.llvm.org/doxygen/cpuid_8h_source.html

    clang: lib/Headers/cpuid.h Source File

  3. People also ask
    What is __CPUID in GCC?
    GCC also provides a header called <cpuid.h> on systems that have CPUID. The __cpuid is a macro expanding to inline assembly. Typical usage would be: But if one requested an extended feature not present on this CPU, they would not notice and might get random, unexpected results. Safer version is also provided in <cpuid.h>.

    CPUID - Wikipedia

    en.wikipedia.org
    What is CPUID opcode?
    The CPUID opcode is 0F A2 . In assembly language, the CPUID instruction takes no parameters as CPUID implicitly uses the EAX register to determine the main category of information returned. In Intel's more recent terminology, this is called the CPUID leaf.

    CPUID - Wikipedia

    en.wikipedia.org
    What is CPUID fn0000_0001_ecx?
    Feature bit CPUID Fn0000_0001_ECX has been reserved for use by hypervisors to indicate the presence of a hypervisor. Hypervisors set this bit to 1 and physical CPU's set this bit to zero. This bit can be probed by the guest software to detect whether they are running inside a virtual machine.

    CPUID - Wikipedia

    en.wikipedia.org
    What is package CPU?
    Package cpu implements processor feature detection for various CPU architectures. IsBigEndian records whether the GOARCH's byte order is big endian. HasSWP bool // SWP instruction support HasHALF bool // Half-word load and store support HasTHUMB bool // ARM Thumb instruction set

    cpu package - golang.org/x/sys/cpu - Go Packages

    pkg.go.dev
    Feedback
  4. CPUID
    https://www2.cpuid.com/news.html

    News | CPUID

  5. DynamoRIO
    https://dynamorio.org/page_drcpusim.html

    CPU Simulator - DynamoRIO

  6. Go Packages
    https://pkg.go.dev/gvisor.dev/gvisor/pkg/cpuid

    cpuid package - gvisor.dev/gvisor/pkg/cpuid - Go Packages

  7. MASM32
    https://masm32.com/board/index.php?topic=189.0

    CPUID Test piece for later Intel processors. - masm32.com

  8. Go Packages
    https://pkg.go.dev/golang.org/x/sys/cpu

    cpu package - golang.org/x/sys/cpu - Go Packages

  9. iPhone Mania
    https://iphone-mania.jp/news-580465

    A18 Proの性能をM4から予測〜A17 Pro比10%以上の性能向上もあ …

  10. D Programming Language
    https://dlang.org/phobos/core_cpuid.html

    core.cpuid - D Programming Language

  11. Lib.rs
    https://lib.rs/crates/raw-cpuid

    raw-cpuid — Rust utility // Lib.rs