what is the final output of this? ```assemblysection .datamsg: db 10, "You are at the start.", 10len: equ $-msgmsg2: db "Done!", 10len2 equ $-msg2char: db 0section .textglobal mainprint: mov rax, 1 mov rdi, 1 syscall retmain: xor rax, rax xor r9, r9 mov r8b, 255 xor r8b, r8blabel1: cmp r9b, 0 jae label2 mov rsi, msg mov rdx, len call print jmp donelabel2: xor rsi, rsi mov rsi, 48 add rsi, r9 mov [char], rsi mov rsi, char mov rdx, 1 call print sub r8b, 1 jmp label1done: mov rsi, msg2 mov rdx, len2 call print xor rax, rax ret```### ExplanationThis assembly program is written for an x86-64 architecture using the SysV ABI (Application Binary Interface) convention. It consists of two main sections: `.data` and `.text`.- **.data section**: - `msg` contains the string "You are at the start.". - `len` calculates the length of `msg`. - `msg2` contains the string "Done!". - `char` is an empty byte used for character manipulation.- **.text section**: - Defines the main function and a subroutine for printing strings. - **Print subroutine**: - Uses system calls (`syscall`) to print strings to the standard output (file descriptor 1). - **Main procedure**: - Initializes registers and sets up loops to print the initial message and decrement a loop counter (`r8b`). - **label1** and **label2**

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what is the final output of this?

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

what is the final output of this?

```assembly
section .data
msg: db 10, "You are at the start.", 10
len: equ $-msg

msg2: db "Done!", 10
len2 equ $-msg2

char: db 0

section .text
global main
print:
mov rax, 1
mov rdi, 1
syscall
ret

main:
xor rax, rax
xor r9, r9
mov r8b, 255
xor r8b, r8b

label1:
cmp r9b, 0
jae label2
mov rsi, msg
mov rdx, len
call print
jmp done

label2:
xor rsi, rsi
mov rsi, 48
add rsi, r9
mov [char], rsi
mov rsi, char
mov rdx, 1
call print
sub r8b, 1
jmp label1

done:
mov rsi, msg2
mov rdx, len2
call print
xor rax, rax
ret
```

### Explanation
This assembly program is written for an x86-64 architecture using the SysV ABI (Application Binary Interface) convention. It consists of two main sections: `.data` and `.text`.

- **.data section**:
- `msg` contains the string "You are at the start.".
- `len` calculates the length of `msg`.
- `msg2` contains the string "Done!".
- `char` is an empty byte used for character manipulation.

- **.text section**:
- Defines the main function and a subroutine for printing strings.
- **Print subroutine**:
- Uses system calls (`syscall`) to print strings to the standard output (file descriptor 1).
- **Main procedure**:
- Initializes registers and sets up loops to print the initial message and decrement a loop counter (`r8b`).
- **label1** and **label2**

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