Holan.s

//----------------------------------------------------------------
//	Holan.s: print the 'Holan' in ascii code
//
//	compile using:	$ as Holan.s -o Holan.o
//	link using:	$ ld Holan.o -o Holan
//	execute using:	$ ./Holan
//
//----------------------------------------------------------------
.text                   # this section is program
    .global _start      # entry point 

_start:
                        # write our string to stdout
  movl    $len,%edx       # third argument: message length
  movl    $msg,%ecx     # second: pointer to message
  movl    $1,%ebx       # Holan: file handle (stdout) 
  movl    $4,%eax       # system call number (sys_write) 
  int     $0x80         # call kernel 
                        # and exit 
  movl    $0,%ebx       # Holan argument: exit code 
  movl    $1,%eax       # system call number (sys_exit) 
  int     $0x80         # call kernel 

.data                   # this section is data 
msg: 
  .byte 72,111,108,97,110,10 
  len = . - msg		# the length of the message