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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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206
crates/asm/src/mips64.rs Normal file
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@ -0,0 +1,206 @@
//! Syscall implementations for `mips64`.
use super::{StatfsBuf, SysInfo, UtsNameBuf};
pub(super) unsafe fn sys_open(path: *const u8, flags: i32) -> i32 {
unsafe {
let ret: i64;
core::arch::asm!(
"syscall",
"beqz $7, 1f",
"nop",
"dsubu $2, $0, $2",
"1:",
inlateout("$2") 5000i64 + 2 => ret, // SYS_open
in("$4") path,
in("$5") flags,
in("$6") 0i32, // mode
lateout("$7") _,
lateout("$8") _, lateout("$9") _, lateout("$10") _, lateout("$11") _,
lateout("$12") _, lateout("$13") _, lateout("$14") _, lateout("$15") _,
lateout("$24") _, lateout("$25") _,
options(nostack)
);
#[allow(clippy::cast_possible_truncation)]
{
ret as i32
}
}
}
pub(super) unsafe fn sys_read(fd: i32, buf: *mut u8, count: usize) -> isize {
unsafe {
let ret: i64;
core::arch::asm!(
"syscall",
"beqz $7, 1f",
"nop",
"dsubu $2, $0, $2",
"1:",
inlateout("$2") 5000i64 + 0 => ret, // SYS_read
in("$4") fd,
in("$5") buf,
in("$6") count,
lateout("$7") _,
lateout("$8") _, lateout("$9") _, lateout("$10") _, lateout("$11") _,
lateout("$12") _, lateout("$13") _, lateout("$14") _, lateout("$15") _,
lateout("$24") _, lateout("$25") _,
options(nostack)
);
ret as isize
}
}
pub(super) unsafe fn sys_write(fd: i32, buf: *const u8, count: usize) -> isize {
unsafe {
let ret: i64;
core::arch::asm!(
"syscall",
"beqz $7, 1f",
"nop",
"dsubu $2, $0, $2",
"1:",
inlateout("$2") 5000i64 + 1 => ret, // SYS_write
in("$4") fd,
in("$5") buf,
in("$6") count,
lateout("$7") _,
lateout("$8") _, lateout("$9") _, lateout("$10") _, lateout("$11") _,
lateout("$12") _, lateout("$13") _, lateout("$14") _, lateout("$15") _,
lateout("$24") _, lateout("$25") _,
options(nostack)
);
ret as isize
}
}
pub(super) unsafe fn sys_close(fd: i32) -> i32 {
unsafe {
let ret: i64;
core::arch::asm!(
"syscall",
"beqz $7, 1f",
"nop",
"dsubu $2, $0, $2",
"1:",
inlateout("$2") 5000i64 + 3 => ret, // SYS_close
in("$4") fd,
lateout("$7") _,
lateout("$8") _, lateout("$9") _, lateout("$10") _, lateout("$11") _,
lateout("$12") _, lateout("$13") _, lateout("$14") _, lateout("$15") _,
lateout("$24") _, lateout("$25") _,
options(nostack)
);
#[allow(clippy::cast_possible_truncation)]
{
ret as i32
}
}
}
pub(super) unsafe fn sys_uname(buf: *mut UtsNameBuf) -> i32 {
unsafe {
let ret: i64;
core::arch::asm!(
"syscall",
"beqz $7, 1f",
"nop",
"dsubu $2, $0, $2",
"1:",
inlateout("$2") 5000i64 + 61 => ret, // SYS_newuname
in("$4") buf,
lateout("$7") _,
lateout("$8") _, lateout("$9") _, lateout("$10") _, lateout("$11") _,
lateout("$12") _, lateout("$13") _, lateout("$14") _, lateout("$15") _,
lateout("$24") _, lateout("$25") _,
options(nostack)
);
#[allow(clippy::cast_possible_truncation)]
{
ret as i32
}
}
}
pub(super) unsafe fn sys_statfs(path: *const u8, buf: *mut StatfsBuf) -> i32 {
unsafe {
let ret: i64;
core::arch::asm!(
"syscall",
"beqz $7, 1f",
"nop",
"dsubu $2, $0, $2",
"1:",
inlateout("$2") 5000i64 + 134 => ret, // SYS_statfs
in("$4") path,
in("$5") buf,
lateout("$7") _,
lateout("$8") _, lateout("$9") _, lateout("$10") _, lateout("$11") _,
lateout("$12") _, lateout("$13") _, lateout("$14") _, lateout("$15") _,
lateout("$24") _, lateout("$25") _,
options(nostack)
);
#[allow(clippy::cast_possible_truncation)]
{
ret as i32
}
}
}
pub(super) unsafe fn sys_sysinfo(info: *mut SysInfo) -> i64 {
unsafe {
let ret: i64;
core::arch::asm!(
"syscall",
"beqz $7, 1f",
"nop",
"dsubu $2, $0, $2",
"1:",
inlateout("$2") 5000_i64 + 97 => ret, // SYS_sysinfo
in("$4") info,
lateout("$7") _,
lateout("$8") _, lateout("$9") _, lateout("$10") _, lateout("$11") _,
lateout("$12") _, lateout("$13") _, lateout("$14") _, lateout("$15") _,
lateout("$24") _, lateout("$25") _,
options(nostack)
);
ret
}
}
pub(super) unsafe fn sys_sched_getaffinity(
pid: i32,
mask_size: usize,
mask: *mut u8,
) -> i32 {
unsafe {
let ret: i64;
core::arch::asm!(
"syscall",
inlateout("$2") 5000i64 + 196 => ret, // __NR_sched_getaffinity
in("$4") pid,
in("$5") mask_size,
in("$6") mask,
lateout("$7") _,
lateout("$8") _, lateout("$9") _, lateout("$10") _, lateout("$11") _,
lateout("$12") _, lateout("$13") _, lateout("$14") _, lateout("$15") _,
lateout("$24") _, lateout("$25") _,
options(nostack)
);
#[allow(clippy::cast_possible_truncation)]
{
ret as i32
}
}
}
pub(super) unsafe fn sys_exit(code: i32) -> ! {
unsafe {
core::arch::asm!(
"syscall",
in("$2") 5000i64 + 58, // SYS_exit
in("$4") code,
options(noreturn, nostack)
);
}
}