@instruction<EOL><INDENT>def SYSCALL(cpu):<DEDENT>
cpu.RCX = cpu.RIP<EOL>cpu.R11 = cpu.RFLAGS<EOL>raise Syscall()<EOL>
Calls to interrupt procedure.

The INT n instruction generates a call to the interrupt or exception handler specified
with the destination operand. The INT n instruction is the general mnemonic for executing
a software-generated call to an interrupt handler. The INTO instruction is a special
mnemonic for calling overflow exception (#OF), interrupt vector number 4. The overflow
interrupt checks the OF flag in the EFLAGS register and calls the overflow interrupt handler
if the OF flag is set to 1.

:param cpu: current CPU.