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Make x86_64 work (pre-syscalls)

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This commit is contained in:
Mark Poliakov
2022-01-12 13:47:29 +02:00
parent c255c3fa08
commit d14ca5ecdb
30 changed files with 1114 additions and 595 deletions
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libsys/src/calls.rs
+37 -26
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@@ -11,50 +11,61 @@ use crate::{
},
};
use core::time::Duration;
use core::arch::asm;
// TODO document the syscall ABI
// TODO move this to libusr
macro_rules! syscall {
($num:expr) => {{
let mut res: usize;
asm!("svc #0", out("x0") res, in("x8") $num.repr(), options(nostack));
res
// let mut res: usize;
// asm!("svc #0", out("x0") res, in("x8") $num.repr(), options(nostack));
// res
loop {}
0
}};
($num:expr, $a0:expr) => {{
let mut res: usize = $a0;
asm!("svc #0",
inout("x0") res,
in("x8") $num.repr(), options(nostack));
res
// let mut res: usize = $a0;
// asm!("svc #0",
// inout("x0") res,
// in("x8") $num.repr(), options(nostack));
// res
loop {}
0
}};
($num:expr, $a0:expr, $a1:expr) => {{
let mut res: usize = $a0;
asm!("svc #0",
inout("x0") res, in("x1") $a1,
in("x8") $num.repr(), options(nostack));
res
// let mut res: usize = $a0;
// asm!("svc #0",
// inout("x0") res, in("x1") $a1,
// in("x8") $num.repr(), options(nostack));
// res
loop {}
0
}};
($num:expr, $a0:expr, $a1:expr, $a2:expr) => {{
let mut res: usize = $a0;
asm!("svc #0",
inout("x0") res, in("x1") $a1, in("x2") $a2,
in("x8") $num.repr(), options(nostack));
asm!("syscall",
inout("rax") res, in("rdi") $a1, in("rsi") $a2,
in("rdx") $num.repr(), options(nostack));
res
}};
($num:expr, $a0:expr, $a1:expr, $a2:expr, $a3:expr) => {{
let mut res: usize = $a0;
asm!("svc #0",
inout("x0") res, in("x1") $a1, in("x2") $a2,
in("x3") $a3, in("x8") $num.repr(), options(nostack));
res
// let mut res: usize = $a0;
// asm!("svc #0",
// inout("x0") res, in("x1") $a1, in("x2") $a2,
// in("x3") $a3, in("x8") $num.repr(), options(nostack));
// res
loop {}
0
}};
($num:expr, $a0:expr, $a1:expr, $a2:expr, $a3:expr, $a4:expr) => {{
let mut res: usize = $a0;
asm!("svc #0",
inout("x0") res, in("x1") $a1, in("x2") $a2,
in("x3") $a3, in("x4") $a4, in("x8") $num.repr(), options(nostack));
res
// let mut res: usize = $a0;
// asm!("svc #0",
// inout("x0") res, in("x1") $a1, in("x2") $a2,
// in("x3") $a3, in("x4") $a4, in("x8") $num.repr(), options(nostack));
// res
loop {}
0
}};
}