diff options
Diffstat (limited to 'vendor/rustix/src/backend/linux_raw/arch/mod.rs')
| -rw-r--r-- | vendor/rustix/src/backend/linux_raw/arch/mod.rs | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/vendor/rustix/src/backend/linux_raw/arch/mod.rs b/vendor/rustix/src/backend/linux_raw/arch/mod.rs index 31a8c11f9..ac9e25fa7 100644 --- a/vendor/rustix/src/backend/linux_raw/arch/mod.rs +++ b/vendor/rustix/src/backend/linux_raw/arch/mod.rs @@ -3,6 +3,14 @@ //! This module also has a `choose` submodule which chooses a scheme and is //! what most of the `rustix` syscalls use. //! +//! Compilers should really have intrinsics for making system calls. They're +//! much like regular calls, with custom calling conventions, and calling +//! conventions are otherwise the compiler's job. But for now, use inline asm. +//! +//! The calling conventions for Linux syscalls are [documented here]. +//! +//! [documented here]: https://man7.org/linux/man-pages/man2/syscall.2.html +//! //! # Safety //! //! This contains the inline `asm` statements performing the syscall @@ -15,6 +23,17 @@ // These functions always use the machine's syscall instruction, even when it // isn't the fastest option available. +#[cfg_attr(target_arch = "aarch64", path = "aarch64.rs")] +#[cfg_attr(all(target_arch = "arm", not(thumb_mode)), path = "arm.rs")] +#[cfg_attr(all(target_arch = "arm", thumb_mode), path = "thumb.rs")] +#[cfg_attr(target_arch = "mips", path = "mips.rs")] +#[cfg_attr(target_arch = "mips32r6", path = "mips32r6.rs")] +#[cfg_attr(target_arch = "mips64", path = "mips64.rs")] +#[cfg_attr(target_arch = "mips64r6", path = "mips64r6.rs")] +#[cfg_attr(target_arch = "powerpc64", path = "powerpc64.rs")] +#[cfg_attr(target_arch = "riscv64", path = "riscv64.rs")] +#[cfg_attr(target_arch = "x86", path = "x86.rs")] +#[cfg_attr(target_arch = "x86_64", path = "x86_64.rs")] pub(in crate::backend) mod asm; // On most architectures, the architecture syscall instruction is fast, so use |