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cli

Clear interrupt flag

Clears the interrupt flag, disabling maskable interrupts.

8086 and later

Intel's reference: CLI

CFPFAFZFSFIFDFOF –––––●––
  • ● set from the result
  • – not changed

Forms

  • cli

Only privileged code may do this, such as an operating-system kernel: in a Linux program cli raises a general-protection fault, which the program receives as a segmentation fault. sti sets the flag again.

global _start

section .text
_start:
        mov rax, 12
        mov rbx, 5
        mov rcx, 3
        mov rsi, 9

        cli

        mov rax, 60         ; syscall 60: exit
        xor rdi, rdi
        syscall