section .text
extern printf
global _start ;must be declared for linker (ld)
_start: ;tells linker entry point
push ebp ;save the calling program base pointer (OS)
mov ebp, esp ;creates a new entry for the program
push msg ;pushes the memory address onto the stack
call printf
mov esp, ebp ;destroy stack frame and restores the pointer to OS
pop ebp
ret
section .data
msg db 'Hello, world!' , 10,0 ;string to be printed 10-return to next
;10 - return to next line, 0 end of message
len equ $ - msg ;length of the string