#include <asm/unistd.h>
#include <syscall.h>
#define STDOUT_FILENO 1

.file "first.S"
.section        .rodata
L1:
   .string "My First program\n"
L2:
.text
.globl _start

_start:
       movl  $(SYS_write), %eax     # eax <-- 1 (write)
                                    # parameters to 'write'
       movq  $(STDOUT_FILENO), %rdi # rdi <-- 1 (stdout)
       movq  $L1, %rsi              # rsi <-- starting 
                                    #  address of string
       movq  $(L2-L1), %rdx         # rdx <-- L2 - L1
                                    #   string length
       syscall                      # software interrupt
                                    #  user process requesting
                                    #  OS for service 
       movl  $(SYS_exit), %eax      # eax <-- 60 (exit)
                                    #   parameters to exit
       movq  $0, %rdi               # rdi <-- 0
       syscall                      # software interrupt
       ret                          # return