use crate::simulator::machine::{ExceptionType, Machine};


pub const SC_HALT: u8 =	0;
pub const SC_EXIT: u8 =	1;
pub const SC_EXEC: u8 =	2;
pub const SC_JOIN: u8 =	3;
pub const SC_CREATE: u8 = 4;
pub const SC_OPEN: u8 =	5;
pub const SC_READ: u8 =	6;
pub const SC_WRITE: u8 = 7;
pub const SC_SEEK: u8 = 8;
pub const SC_CLOSE: u8 = 9;
pub const SC_NEW_THREAD: u8 = 10;
pub const SC_YIELD: u8 =	 11;
pub const SC_PERROR: u8 = 12;
pub const SC_P: u8 = 13;
pub const SC_V: u8 = 14;
pub const SC_SEM_CREATE: u8 = 15 ;
pub const SC_SEM_DESTROY: u8 =   16;
pub const SC_LOCK_CREATE: u8 =	 17 ;
pub const SC_LOCK_DESTROY: u8 =	 18 ;
pub const SC_LOCK_ACQUIRE: u8 =	 19 ;
pub const SC_LOCK_RELEASE: u8 =	 20 ;
pub const SC_COND_CREATE: u8 =	 21 ;
pub const SC_COND_DESTROY: u8 =	 22 ;
pub const SC_COND_WAIT: u8 =	 23 ;
pub const SC_COND_SIGNAL: u8 =	 24;
pub const SC_COND_BROADCAST: u8 = 25;
pub const SC_TTY_SEND: u8 =	 26;
pub const SC_TTY_RECEIVE: u8 =	 27;
pub const SC_MKDIR: u8 =	 28;
pub const SC_RMDIR: u8 =	 29;
pub const SC_REMOVE: u8 =        30;
pub const SC_FSLIST: u8 =        31;
pub const SC_SYS_TIME: u8 =	 32 ;
pub const SC_MMAP: u8 =		 33;
pub const SC_DEBUG: u8 =         34;


pub fn call(exception: ExceptionType, machine: &Machine) {

    match exception {
        ExceptionType::NoException => todo!(),
        ExceptionType::SyscallException => syscall(machine),
        ExceptionType::PagefaultException => todo!(),
        ExceptionType::ReadOnlyException => todo!(),
        ExceptionType::BusErrorException => todo!(),
        ExceptionType::AddressErrorException => todo!(),
        ExceptionType::OverflowException => todo!(),
        ExceptionType::IllegalInstrException => todo!(),
        ExceptionType::NumExceptionTypes => todo!(),
    }
}

fn syscall(machine: &Machine) {
    let call_type = machine.read_int_register(17);

    todo!()
}