PUSHFD and POPFD

push and pop the EFLAGS register

PUSHAD pushes the $32-$bit general$-$purpose registers on the stack

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

POPAD pops the same registers off the stack in reverse order

PUSHA and POPA do the same for $16-$bit register