Support for x86_64 specific instructions (e.g. TLB flush), registers (e.g. control registers), and structures (e.g. page tables).

• nightly: Enables features only available on nightly Rust; enabled by default.
• instructions: Enabled by default, turns on x86_64 specific instructions, and dependent features. Only available for x86_64 targets.

If no nightly features are enabled, Rust 1.59.0 is required. This can be done by either:

• --no-default-features --features instructions
• --no-default-features

If the nightly feature or any of its sub-features is enabled (which is the default), a recent nightly is required.

This crate does not attempt to handle every facet of OS development. Other useful crates in this space include:

• raw-cpuid: safe wrappers around the cpuid instruction
  • Provides parsed versions of the CPUID data, rather than just raw binary values.
  • Support for AMD and Intel specific values.
  • Works on x86 and x86_64 systems, in both user and kernel mode.
• uefi: abstractions for UEFI (the successor to BIOS)
  • Provides UEFI tables, functions, and types.
  • Useful for writing UEFI applications, or calling UEFI functions from your OS.
  • Works on a variety of modern platforms, not just x86_64.
• volatile: interface to read_volatile and write_volatile
  • Makes it easier to program MMIO interfaces and devices.
  • Works on any Rust target.