x86_64 0.12.3

# x86_64 library

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

## Crate Feature Flags

* `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.
* `external_asm`: Use this to build with non-nightly rust. Needs `default-features = false, features = ["instructions"]`. Is unsupported on Windows.

## Building with stable rust

This needs to have the [compile-time requirements](https://github.com/alexcrichton/cc-rs#compile-time-requirements) of the `cc` crate installed on your system.
It was currently only tested on Linux and MacOS.