# Re: \[PATCH v6 5/5\] rust: add arch\_static\_branch

- From: Peter Zijlstra \<peterz@infradead.org\>
- Date: 2024-08-10 21:04:35 
- List: linux-trace-kernel
- Page: https://ratatoskr.run/linux-trace-kernel/2024/08/2703343
- Thread: https://ratatoskr.run/linux-trace-kernel/2024/08/2701304/t.md

```text
On Thu, Aug 08, 2024 at 05:23:41PM +0000, Alice Ryhl wrote:

> +/// Wrapper around `asm!` that uses at&t syntax on x86.
> +// Uses a semicolon to avoid parsing ambiguities, even though this does not match native `asm!`
> +// syntax.
> +#[cfg(target_arch = "x86_64")]
> +#[macro_export]
> +macro_rules! asm {
> +    ($($asm:expr),* ; $($rest:tt)*) => {
> +        ::core::arch::asm!( $($asm)*, options(att_syntax), $($rest)* )
> +    };
> +}
> +
> +/// Wrapper around `asm!` that uses at&t syntax on x86.

^ the above line seems out of place given the 'not' below.

> +// For non-x86 arches we just pass through to `asm!`.
> +#[cfg(not(target_arch = "x86_64"))]
         ^^^
> +#[macro_export]
> +macro_rules! asm {
> +    ($($asm:expr),* ; $($rest:tt)*) => {
> +        ::core::arch::asm!( $($asm)*, $($rest)* )
> +    };
> +}
```