Function dispatch

src/sys/sc/mod.rs:61–143

Dispatcher for system-calls

(n: usize, a1: usize, a2: usize, a3: usize)

// Dispatcher for system-calls
pub fn dispatch(n: usize, a1: usize, a2: usize, a3: usize) -> usize
{
	match n
	{
		// Close
		CLOSE =>
		{
			let handle = a1;
			close(handle);
			0
		}


		// Duplicate
		DUPLICATE =>
		{
			let original = a1;
			let new = a2;
			crate::sys::sc::svc::dp(original, new) as usize
		}


		// Read
		READ =>
		{
			let handle = a1;
			let ptr = crate::sys::proc::ptr_from_address(a2 as u64);
			let len = a3;
			let buffer = unsafe
			{
				core::slice::from_raw_parts_mut(ptr, len)
			};

			crate::sys::sc::svc::rd(handle, buffer) as usize
		}

		// Real-time
		RT =>
		{
			// TODO: Convert time, using FL32's conv_to_bits
			crate::sys::sc::svc::rt() as usize
		}


		// Sleep
		SLEEP =>
		{
			crate::sys::sc::svc::sl(a1 as f64);
			0
		}



		// SPAWN
		SPAWN =>
		{
			let ptr = crate::sys::proc::ptr_from_address(a1 as u64);
			let len = a2;