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Documentation Home > IA-32 Assembly Language Reference Manual > Chapter 2 Instruction-Set Mapping > Flag Instructions > Push Flag Register Onto Stack (pushf). IA-32 Assembly Language Reference Manual. Previous: Pop Stack into Flag (popf) · Next: Complement Carry Flag (cmc)
PUSHF/PUSHFD - Push Flags onto Stack Usage: PUSHF PUSHFD (386+) Modifies flags: None Transfers the Flags Register onto the stack. PUSHF saves a 16 bit value while PUSHFD saves a 32 bit value. Clocks Size Operands 808x 286 386 486 Bytes none 10/14 3 4 4 1 none (PM) - - 4 3 1
7 Nov 2013
POP - Pop Word off Stack. Usage: POP dest. Modifies Flags: None. Transfers word at the current stack top (SS:SP) to the destination then increments SP by two to point to the new stack top. CS is not a valid destination. Clocks. operands, 286, 386, 486, Size Bytes. reg16, 5, 4, 4, 1. reg32, 4, 1. segreg, 5, 7, 3, 1. mem16, 5, 5
Usage: PUSHF PUSHFD (386+). Modifies flags: None Transfers the Flags Register onto the stack. PUSHF saves a 16 bit value while PUSHFD saves a 32 bit value. Clocks Size Operands 808x 286 386 486 Bytes none 10/14 3 4 4 1 none (PM) - - 4 3 1. 9C PUSHF Push lower 16 bits of EFLAGS 9C PUSHFD Push EFLAGS
up: Chapter 17 -- 80386 Instruction Set prev: PUSHA/PUSHAD Push all General Registers next: RCL/RCR/ROL/ROR Rotate. PUSHF/PUSHFD -- Push Flags Register onto the Stack. Opcode Instruction Clocks Description 9C PUSHF 4 Push FLAGS 9C PUSHFD 4 Push EFLAGS. Operation. IF OperandSize = 32 THEN
28 Nov 2015 field in OllyDbg) to stack: bit abbr description ------ ------- ------------------------------------------------------------ 0 CF Carry flag 1 Reserved 2 PF Parity flag 3 Reserved 4 AF Adjust flag 5 Reserved 6 ZF Zero flag 7 SF Sign flag 8 TF Trap flag 9 IF Interrupt enable flag 10 DF Direction flag 11 OF Overflow flag 12-13 IOPL
The PUSHF (push flags) and PUSHFD (push flags double) mnemonics reference the same opcode. The PUSHF instruction is intended for use when the operand-size attribute is 16 and the PUSHFD instruction for when the operand-size attribute is 32. Some assemblers may force the operand size to 16 when PUSHF is
Opcode*, Instruction, Op/En, 64-Bit Mode, Compat/Leg Mode, Description. 9C, PUSHF, NP, Valid, Valid, Push lower 16 bits of EFLAGS. 9C, PUSHFD, NP, N.E., Valid, Push EFLAGS. 9C, PUSHFQ, NP, Valid, N.E., Push RFLAGS.
The PUSHF (push flags) and PUSHFD (push flags double) mnemonics reference the same opcode. The PUSHF instruction is intended for use when the operand-size attribute is 16 and the PUSHFD instruction for when the operand-size attribute is 32. Some assemblers may force the operand size to 16 when PUSHF is
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