%include "CPsub64.inc"

global main

section .text
main:
; initial setup
	mov rcx, 1
	mov rdi, 1

; Start of addidtion

; display what operation is being done
	mov rax, 1
	mov rsi, messageADD
	mov rdx, lengthADD
	syscall

; print a blankline
	mov rax, 1
	mov rsi, blankline
	mov rdx, length1
	syscall

; display the message for the first input for addition
	mov rax, 1
	mov rsi, message1
	mov rdx, length1
	syscall

; take in the input for addidtion 1
	mov rdx, 255
	mov rcx, userinputADD1
	mov rbx, 0
	mov rax, 3
	int 80h

; covert from string to number 1
	mov rdx, userinputADD1
	mov rcx, 255
	call ParseInteger64
	mov r8, rax

; display the message for the second input for addidtion
	mov rax, 1
	mov rsi, message2
	mov rdx, length2
	syscall

; take in the input for addidtion 2
	mov rdx, 255
	mov rcx, userinputADD2
	mov rbx, 0
	mov rax, 3
	int 80h

; covert from string to number 2
	mov rdx, userinputADD2
	mov rcx, 255
	call ParseInteger64
	mov r9, rax

; addidtion
	add r9,r8


; display addidtion answer
	mov rax, r9
	call WriteInt

; Print a blankline
	mov rax, 1
	mov rsi, blankline
	mov rdx, length1
	syscall
;==============================

; Start of subtraction

; display what operation is being done
	mov rax, 1
	mov rsi, messageSUB
	mov rdx, lengthSUB
	syscall

; print a blankline
	mov rax, 1
	mov rsi, blankline
	mov rdx, length1
	syscall

; display the message for the first input for subtraction
	mov rax, 1
	mov rsi, message1
	mov rdx, length1
	syscall

; take in the input for subtraction 1
	mov rdx, 255
	mov rcx, userinputSUB1
	mov rbx, 0
	mov rax, 3
	int 80h

; covert from string to number 1
	mov rdx, userinputSUB1
	mov rcx, 255
	call ParseInteger64
	mov r8, rax

; display the message for the second input for subtraction
	mov rax, 1
	mov rsi, message2
	mov rdx, length2
	syscall

; take in the input for subtraction 2
	mov rdx, 255
	mov rcx, userinputSUB2
	mov rbx, 0
	mov rax, 3
	int 80h

; covert from string to number 2
	mov rdx, userinputSUB2
	mov rcx, 255
	call ParseInteger64
	mov r9, rax

; subtraction
	sub r9,r8

; display subtraction answer
	mov rax, r9
	call WriteInt
;==========================================

; Start of Multiplication

; display what operation is being done
	mov rax, 1
	mov rsi, messageMUL
	mov rdx, lengthMUL
	syscall

; print a blankline
	mov rax, 1
	mov rsi, blankline
	mov rdx, length1
	syscall

; display the message for the first input for multiplication
	mov rax, 1
	mov rsi, message1
	mov rdx, length1
	syscall

; take in the input for multiplication 1
	mov rdx, 255
	mov rcx, userinputMUL1
	mov rbx, 0
	mov rax, 3
	int 80h

; covert from string to number 1
	mov rdx, userinputMUL1
	mov rcx, 255
	call ParseInteger64
	mov r8, rax

; display the message for the second input for multiplication
	mov rax, 1
	mov rsi, message2
	mov rdx, length2
	syscall

; take in the input for multiplication 2
	mov rdx, 255
	mov rcx, userinputMUL2
	mov rbx, 0
	mov rax, 3
	int 80h

; covert from string to number 2
	mov rdx, userinputMUL2
	mov rcx, 255
	call ParseInteger64
	mov r9, rax

; multiplication
	mov rax, 5
	mov rsi, 4
	mul rsi

; display multiplication answer
	mov rax, r8
	call WriteInt

; Print a blankline
	mov rax, 1
	mov rsi, blankline
	mov rdx, length1
	syscall
;=======================================

;Start Division

; display what operation is being done
	mov rax, 1
	mov rsi, messageDIV
	mov rdx, lengthDIV
	syscall

; Take in the input
	mov rdx, 255
	mov rcx, userinputDIV1
	mov rbx, 0
	mov rax, 3
	int 80h
	call DumpMem

; Covert  from string to number
	mov rdx, userinputDIV1
	mov rcx, 255
	call ParseInteger64
	mov r8, rax

;display the message for the second input
	mov rax, 1
	mov rsi, message2
	mov rdx, length2
	syscall

; Take in the input
	mov rdx, 255
	mov rcx, userinputDIV2
	mov rbx, 0
	mov rax, 3
	int 80h

; Covert from string to number
	mov rdx, userinputDIV2
	mov rcx, 255
	call ParseInteger64
	mov r9, rax

; division
	;mov rdx, 0
	;mov rax, r8
	;div r9

	mov rdx, 0
	mov rax, 20
	mov rsi, 4
	div rsi


; display division answer
	mov rax, r8
	call WriteInt

; Print a blankline
	mov rax, 1
	mov rsi, blankline
	mov rdx, length1
	syscall

; exit command
	mov rax, 60
	xor rdi, rdi
	syscall


section .data
messageADD: db "We are adding numbers:" ,0,0ah
lengthADD: equ ($-messageSUB)

messageSUB: db "We are subtracting numbers now:" ,0,0ah
lengthSUB: equ ($-messageSUB)

messageMUL: db "We are multiplying now:" ,0,0ah
lengthMUL: equ ($-messageMUL)

messageDIV: db "We are dividing now:" ,0,0ah
lengthDIV: equ ($-messageMUL)

message1: db "Please enter the first number:" ,0,0ah
length1: equ ($-message1)

message2: db "Please enter the second number:" ,0,0ah
length2: equ ($-message2)

blankline:db '',0,0ah
lengthblank: equ ($-blankline)


section .bss
userinputADD1: resb 255 ;reserving 255 bytes
userinputADD2: resb 255 ;reserving 255 bytes

userinputSUB1: resb 255 ;reserving 255 bytes
userinputSUB2: resb 255 ;reserving 255 bytes

userinputMUL1: resb 255 ;reserving 255 bytes
userinputMUL2: resb 255 ;reserving 255 bytes

userinputDIV1: resb 255 ;reserving 255 bytes
userinputDIV2: resb 255 ;reserving 255 bytes