Hello World in assembly for x86
Code : ;author:md.jamal mohiuddin global _start section .text _start: ;print hello world on the screen mov eax,0x4 ;system call number mov ebx,0x1 ;fd =1 mov ecx,message ;buf points to the message mov edx,11 ;len = 11 int 0x80 ;trap interrupt(software defined) ;exit gracefully mov eax,0x1 ;system call number mov ebx,0x3 ;first argument int 0x80 ;trap interrupt(software defined) section .data message : db "Hello World\n" To execute nasm -f elf32 -o hello.o hello.asm ld -o hello hello.o ./hello To check the return type: echo $?