; ----------------------------------------------------------------------------------------; Writes "Hello, World" to the console using only system calls. Runs on 64-bit Linux only.; To assemble and run:;; nasm -felf64 hello.asm && ld hello.o && ./a.out; ---------------------------------------------------------------------------------------- global _start section .text_start: mov rax, 1 ; system call for write mov rdi, 1 ; file handle 1 is stdout mov rsi, message ; address of string to output mov rdx, 13 ; number of bytes syscall ; invoke operating system to do the write mov rax, 60 ; system call for exit xor rdi, rdi ; exit code 0 syscall ; invoke operating system to exit section .datamessage: db "Hello, World", 10 ; note the newline at the end