IRET/IRETD - Interrupt Return

        Usage:  IRET
                IRETD  (386+)
        Modifies flags: AF CF DF IF PF SF TF ZF

        Returns control to point of interruption by popping IP, CS
        and then the Flags from the stack and continues execution at
        this location.  CPU exception interrupts will return to the
        instruction that cause the exception because the CS:IP placed
        on the stack during the interrupt is the address of the offending
        instruction.

                                         Clocks                 Size
            Operands            808x   286   386   486          Bytes

    iret                       32/44  17+m    22    15            1
    iret  (prot. mode)           -    31+m    38    15            1
    iret  (to less privilege)    -    55+m    82    36            1
    iret  (different task, NT=1) -   169+m    TS  TS+32           1
    iretd                        -      -   22/38   15            1
    iretd (to less privilege)    -      -     82    36            1
    iretd (to VM86 mode)         -      -     60    15            1
    iretd (different task, NT=1) -      -     TS  TS+32           1

    - 386 timings are listed as real-mode/protected-mode


Back to Intel Instruction Set page.