diff options
Diffstat (limited to 'vendor/rustix/src/backend/linux_raw/arch/outline/mod.rs')
| -rw-r--r-- | vendor/rustix/src/backend/linux_raw/arch/outline/mod.rs | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/vendor/rustix/src/backend/linux_raw/arch/outline/mod.rs b/vendor/rustix/src/backend/linux_raw/arch/outline/mod.rs index a6a5f270d..5e6f5e1f5 100644 --- a/vendor/rustix/src/backend/linux_raw/arch/outline/mod.rs +++ b/vendor/rustix/src/backend/linux_raw/arch/outline/mod.rs @@ -1,9 +1,13 @@ //! Declare functions defined in out-of-line ("outline") asm files. //! -//! Kernel calling conventions differ from userspace calling conventions, -//! so we also define inline function wrappers which reorder the arguments -//! so that they match with the kernel convention as closely as possible, -//! to minimize the amount of out-of-line code we need. +//! Kernel calling conventions differ from userspace calling conventions, so we +//! also define inline function wrappers which reorder the arguments so that +//! they match with the kernel convention as closely as possible, to minimize +//! the amount of out-of-line code we need. +//! +//! This is needed in order to support our MSRV of 1.48, which doesn't support +//! inline asm. When using newer Rust versions, inline asm code is used instead +//! and these outline libraries are unused. #[cfg(target_arch = "x86")] mod x86; |