%include "CONSTANTS.h"

section .data
      data1: dd 11111111h
      data2: dd 22222222h
      data3: dd 0 

      data4: dq 1111111122222222h
      data5: dq 3333333344444444h
      data6: dq 0

      data7: db 0

      format1: db `%qd + %qd = %qd\n`,0
      format2: db `%\#qx + %\#qx = %\#qx\n`,0
      format3: db `%\#qx - %\#qx = %\#qx\n`,0
      format4: db `%qd - %qd = %qd\n`,0

      Label2: db `\nAdd\n`,0
      Label3: db `\nInc\n`,0
      Label4: db `\nsub\n`,0
      Label5: db `\ndec\n`,0

section .bss

section .text
global main
main:

    mov rdi, Label2 
    call CallPrintf

    ; let's try an 8 bit math
    mov rdi, format1

    ; wipe out rsi, and move a 2 into the bottom bits
    mov rsi, 0
    mov sil, 2

    mov rdx, 0
    mov dl, 4

    mov rcx, 0
    mov cl, 2
    add   cl, 4
    call CallPrintf

    ; do 32 bit math
    mov eax, dword [data1]
    add eax, dword [data2]
    mov dword [data3], eax

    mov rdi, format2
    mov esi, dword [data1]
    mov edx, dword [data2]
    mov ecx, dword [data3]
    call CallPrintf 

    ; register to register math
    mov rdi, format1
    mov esi, 100 
    mov edx, 200 
    mov ecx, esi
    add ecx, edx
    call CallPrintf 

    ; do 64 bit math
    mov rax, qword [data4]
    add rax, qword [data5]
    mov qword [data6], rax
    mov rsi, rax

    mov rdi, format2
    mov rsi, qword [data4]
    mov rdx, qword [data5]
    mov rcx, qword [data6]
    call CallPrintf 

    ; let's try inc
    mov rdi, Label3
    call CallPrintf

    mov rdi, format1
    movzx rsi, byte [data7]
    mov rdx, 1
    inc byte [data7]
    movzx rcx, byte[data7]
    call CallPrintf

    mov rdi, format1
    movzx rsi, byte [data7]
    mov rdx, 1
    mov rcx, rdx
    inc rcx
    call CallPrintf

    ; a few subtraction problems
    mov rdi, Label4
    call CallPrintf

    mov rdi, format4
    mov esi, 200 
    mov edx, 100 
    mov ecx, esi
    sub ecx, edx
    call CallPrintf 

    mov rdi, format4
    mov esi, 100 
    mov edx, 200 
    mov ecx, esi
    sub ecx, edx
    call CallPrintf 

    mov rdi, format4
    mov esi, 100 
    mov edx, 200 
    mov rcx, rsi
    sub rcx, rdx
    call CallPrintf 

    ; a few dec 
    mov rdi, Label5
    call CallPrintf

    mov rdi, format4
    inc byte[data7]
    inc byte[data7]
    movzx rsi, byte [data7]
    mov rdx, 1
    dec byte [data7]
    movzx rcx, byte[data7]
    call CallPrintf

    mov rdi, format4
    movzx rsi, byte [data7]
    mov rdx, 1
    mov rcx, rsi
    dec rcx
    call CallPrintf

    ; goodby
    ; note this is not a subroutine call, just a jump to code.
    jmp Exit