%include "IO_DEFS.asm"

section .data 
    message1          db  "Enter a message: "
    message1_length   equ $ - message1
    message2          db  "Your message was: ",22h ; adding a quote to the end
    message2_length   equ $ - message2
    end_quote        db  '"',0ah
    ;end_quote         db  `\"\n`

section .bss
    phrase resb 100

section .text
   global _start

_start:

    ; prompt the user
    mov     rax, SYS_WRITE
    mov     rdi, STDOUT
    mov     rsi, message1
    mov     rdx, message1_length
    syscall

    ;read a greeting
    mov rax, SYS_READ
    mov rdi, STDIN
    lea rsi, [phrase]
    mov rdx, 100
    syscall

    mov r10, rax    ; move the number of characters input r10 to hold it 
    sub r10, 1      ; but there will be a spare endl at the end.

    ; print the response,  label first
    mov     rax, SYS_WRITE
    mov     rdi, STDOUT
    mov     rsi, message2
    mov     rdx, message2_length
    syscall

    ; then the message
    mov     rax, SYS_WRITE
    mov     rdi, STDOUT
    mov     rsi, phrase
    mov     rdx, r10 
    syscall

    ; an end quote and endl
    mov     rax, SYS_WRITE
    mov     rdi, STDOUT
    mov     rsi, end_quote 
    mov     rdx, 2
    syscall


    ; Exit
    mov eax, SYS_EXIT
    mov edx, SUCCESS
    syscall