asm

    .intel_syntax noprefix
    .text
    .globl my_exit
    .globl read
    .globl write
    .globl _start
my_exit:
    sub rsp, 8
    mov esi, edi
    xor eax, eax
    mov edi, 60
    call syscall
    pop rax
    ret
read:
    sub rsp, 8
    mov ecx, edx
    xor eax, eax
    mov rdx, rsi
    mov esi, edi
    xor edi, edi
    call syscall
    pop rdx
    ret
write:
    sub rsp, 8
    mov ecx, edx
    xor eax, eax
    mov rdx, rsi
    mov esi, edi
    mov edi, 1
    call syscall
    pop rdx
    ret
_start:
    push rbx
    xor edi, edi
    mov edx, 131071
    sub rsp, 131088
    lea rbx, 8[rsp]
    mov rax, QWORD PTR fs:40
    mov QWORD PTR 131080[rsp], rax
    xor eax, eax
    mov rsi, rbx
    call read
    mov rsi, rbx
    mov edx, eax
    mov edi, 1
    call write
    xor edi, edi
    call my_exit
    mov rax, QWORD PTR 131080[rsp]
    xor rax, QWORD PTR fs:40
    add rsp, 131088
    pop rbx
    ret