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arch: add mips64 support

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Amaan Qureshi 2026-04-17 02:34:24 -04:00
commit 950d9f4d2c
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5 changed files with 271 additions and 6 deletions
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41
crates/asm/src/lib.rs
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@ -6,11 +6,16 @@
//! faster?
//!
//! Supports `x86_64`, `aarch64`, `riscv64`, `loongarch64`, `s390x`,
//! `powerpc64`, `arm` (armv7), `riscv32`, and `sparc64` architectures.
//! `powerpc64`, `arm` (armv7), `riscv32`, `sparc64`, and `mips64`
//! architectures.
#![no_std]
#![cfg_attr(
any(target_arch = "powerpc64", target_arch = "sparc64"),
any(
target_arch = "powerpc64",
target_arch = "sparc64",
target_arch = "mips64"
),
feature(asm_experimental_arch)
)]
@ -24,11 +29,12 @@
target_arch = "powerpc64",
target_arch = "arm",
target_arch = "riscv32",
target_arch = "sparc64"
target_arch = "sparc64",
target_arch = "mips64"
)))]
compile_error!(
"Unsupported architecture: only x86_64, aarch64, riscv64, loongarch64, \
s390x, powerpc64, arm, riscv32, and sparc64 are supported"
s390x, powerpc64, arm, riscv32, sparc64, and mips64 are supported"
);
// Per-arch syscall implementations live in their own module files.
@ -59,6 +65,9 @@ mod arch;
#[cfg(target_arch = "sparc64")]
#[path = "sparc64.rs"]
mod arch;
#[cfg(target_arch = "mips64")]
#[path = "mips64.rs"]
mod arch;
/// Copies `n` bytes from `src` to `dest`.
///
@ -295,7 +304,8 @@ pub unsafe fn sys_uname(buf: *mut UtsNameBuf) -> i32 {
#[cfg(not(any(
target_arch = "s390x",
target_arch = "arm",
target_arch = "riscv32"
target_arch = "riscv32",
target_arch = "mips64"
)))]
pub struct StatfsBuf {
pub f_type: i64,
@ -355,6 +365,27 @@ pub struct StatfsBuf {
pub _pad: [u32; 4],
}
/// mips reorders fields; see
/// https://github.com/torvalds/linux/blob/v6.19/arch/mips/include/uapi/asm/statfs.h
#[repr(C)]
#[cfg(target_arch = "mips64")]
pub struct StatfsBuf {
pub f_type: i64,
pub f_bsize: i64,
pub f_frsize: i64,
pub f_blocks: u64,
pub f_bfree: u64,
pub f_files: u64,
pub f_ffree: u64,
pub f_bavail: u64,
pub f_fsid: [i32; 2],
pub f_namelen: i64,
pub f_flags: i64,
#[allow(clippy::pub_underscore_fields, reason = "This is not a public API")]
pub _pad: [i64; 5],
}
/// Direct `statfs(2)` syscall
///
/// # Returns