Popf instruction

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#GP(0). If the I/O privilege level is less than 3. If an attempt is made to execute the POPF/POPFD instruction with an operand The POPF instruction is intended for use when the operand-size attribute is 16 and the POPFD instruction for when the operand-size attribute is 32. Some POPF/POPFD pops the word or doubleword on the top of the stack and stores the value in the flags register. If the operand-size attribute of the instruction is POPF/POPFD - Pop Flags off Stack. Usage: POPF POPFD (386+). Modifies Flags: All. Pops word/doubleword from stack into the Flags Register and then increments Assuming you're talking about the Intel x86 instruction set, PUSHF pushes the entire set of flags, the entire contents of the 16-bit FLAGS register, Documentation Home > IA-32 Assembly Language Reference Manual > Chapter 2 Instruction-Set Mapping > Flag Instructions > Pop Stack into Flag (popf). The POPF (POPFD) instruction pops a word (doubleword) from the stack into the Flags Register and then increments SP by 2 (4). Usage POPF. POPFD. Flags None.POPF/POPFD - Pop Flags off Stack Usage: POPF POPFD (386+) Modifies flags: all flags Pops word/doubleword from stack into the Flags Register and then Note: PUSHF / POPF have no operands. The figure below shows that if (SS) WORD: This instruction copies a byte or a word from location in the data. The POPF instruction is intended for use when the operand-size attribute is 16; the POPFD instruction is intended for use when the operand-size attribute is 32.