Stack Data Structure: Simple Calculator

Implement the macros pushq, popq and plus such that the following assembly code can be used as a simple calculator:

session02/calc_ex.s

.equ    ZERO,   0
.equ    RIP,    1
.equ    RSP,    3
.equ    TMP1,   7
.equ    TMP2,   8

.macro stack_init
        orq     %ZERO,  %ZERO,  %RSP
.endm

.macro  pushq   REG
#       your code here
.endm

.macro  popq    REG
#       your code here
.endm

.macro  set     VAL,    REG
        orq     \VAL,   %ZERO,   \REG
.endm

.macro  enter   VAL
        set     \VAL,   %TMP1
        pushq   %TMP1
.endm

.macro  plus
#       your code here
.endm

.macro  mult
#       your code here
.endm

.text
        stack_init
        enter $1
        enter $2
        enter $3
        plus
        mult