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adding time syscall

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Able 2022-02-26 07:47:44 -06:00
parent 3ce2026d32
commit 65259360eb
1 changed files with 14 additions and 0 deletions
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14
ableos/src/wasm_jumploader/host_functions.rs
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@ -8,6 +8,7 @@ pub struct HostExternals {}
const ADD_FUNC_INDEX: usize = 0; const ADD_FUNC_INDEX: usize = 0;
const SEND_SIGNAL_INDEX: usize = 1; const SEND_SIGNAL_INDEX: usize = 1;
const GET_TIME_INDEX: usize = 2;
impl Externals for HostExternals { impl Externals for HostExternals {
fn invoke_index( fn invoke_index(
@ -31,6 +32,17 @@ impl Externals for HostExternals {
let ret = RuntimeValue::I32(0); let ret = RuntimeValue::I32(0);
Ok(Some(ret)) Ok(Some(ret))
} }
GET_TIME_INDEX => {
use core::sync::atomic::Ordering::*;
x86_64::instructions::interrupts::disable();
let tick_time = crate::kmain::TICK.load(Relaxed);
x86_64::instructions::interrupts::enable();
let ret = RuntimeValue::I64(tick_time.try_into().unwrap());
Ok(Some(ret))
}
_ => panic!("Unimplemented function at {}", index), _ => panic!("Unimplemented function at {}", index),
} }
} }
@ -41,6 +53,8 @@ impl HostExternals {
let (params, ret_ty): (&[ValueType], Option<ValueType>) = match index { let (params, ret_ty): (&[ValueType], Option<ValueType>) = match index {
ADD_FUNC_INDEX => (&[ValueType::I32, ValueType::I32], Some(ValueType::I32)), ADD_FUNC_INDEX => (&[ValueType::I32, ValueType::I32], Some(ValueType::I32)),
SEND_SIGNAL_INDEX => (&[ValueType::I32, ValueType::I32], Some(ValueType::I32)), SEND_SIGNAL_INDEX => (&[ValueType::I32, ValueType::I32], Some(ValueType::I32)),
GET_TIME_INDEX => (&[], Some(ValueType::I32)),
_ => return false, _ => return false,
}; };
signature.params() == params && signature.return_type() == ret_ty signature.params() == params && signature.return_type() == ret_ty