This content has not been validated; it was AI-generated following the x86-64 ISA Documentation generation process to maintain high quality. However, as no human has verified this data, errors may exist. If the accuracy of this data is critical, please consult the Intel SDM. The model used to generate this is gemma4:31b

IRETD

Pop the return address and the flags register from the stack to return from an interrupt.

The table after the description covers what the source and destinations can be.

DO NOT support LOCK

This instruction is only available in 16-bit mode or when the processor is operating in compatibility mode. It is NOT supported in 64-bit mode.

To avoid unexpected behavior or processor exceptions, ensure that the stack pointer is correctly aligned and points to a valid memory region containing the saved flags and instruction pointer. Failure to provide a valid return address on the stack will result in the processor jumping to an arbitrary memory location.