PUSHAD Push All 32-Bit GP Registers (386+)

Flags affected:

        O D I T S Z A P C  OF: Overflow flag  TF: Trap flag AF: Aux carry
        F F F F F F F F F  DF: Direction flag SF: Sign flag PF: Parity flag
            <none>         IF: Interrupt flag ZF: Zero flag CF: Carry flag

Legal forms:

        PUSHAD        386+

Examples:

        PUSHAD

Notes:

PUSHA pushes all 32-bit general-purpose registers onto the stack. This instruction is present on the 386 and later CPUs and is not available in the 8086, 8088, or 286.

The registers are pushed in this order:

EAX, ECX, EDX, EBX, ESP, EBP, ESI, EDI

However, note that the value of ESP pushed is the value SP had before the first register was pushed onto the stack. In the course of executing PUSHAD, the stack pointer is decremented by 32 bytes (8 registers x 4 bytes each).

The EFlags register is not pushed onto the stack by PUSHAD; see PUSHFD.

        r8 = AL AH BL BH CL CH DL DH        r16 = AX BX CX DX BP SP SI DI
        sr = CS DS SS ES FS GS              r32 = EAX EBX ECX EDX EBP ESP ESI EDI
        m8 = 8-bit memory data              m16 = 16-bit memory data
        m32 = 32-bit memory data            i8 = 8-bit immediate data
        i16 = 16-bit immediate data         i32 = 32-bit immediate data
        d8 = 8-bit signed displacement      d16 = 16-bit signed displacement
        d32 = 32-bit unsigned displacement