Function sch

src/sys/idt.rs:313–348

sch

(stack_frame: &mut InterruptStackFrame, reg: &mut Reg)

// sch
extern "sysv64" fn sch(stack_frame: &mut InterruptStackFrame, reg: &mut Reg)
{
	let n = reg.rax;
	let a1 = reg.rdi;
	let a2 = reg.rsi;
	let a3 = reg.rdx;

	// Create backup of the CPU context
	if n == crate::sys::sc::SPAWN
	{
		crate::sys::proc::setsf(stack_frame.clone());
		crate::sys::proc::setreg(*reg);
	}

	let res = crate::sys::sc::dispatch(n, a1, a2, a3);


	// Restore from backup
	if n == crate::sys::sc::EXIT
	{
		let stackframe = crate::sys::proc::sf();

		unsafe
		{
			core::ptr::write_volatile(stack_frame.as_mut().extract_inner() as *mut InterruptStackFrameValue, stackframe);
			core::ptr::write_volatile(reg, crate::sys::proc::reg());
		}
	}

	reg.rax = res;

	unsafe
	{
		crate::pic::PICS.lock().notify_intrend(0x80)
	};
}


// Clear interrupt-request mask