sim/m32c/blinky.S

   1 ;;; blinky.S --- sample program to blink LED's on M32C simulator
   2 ;;;
   3 ;;; Copyright (C) 2005-2013 Free Software Foundation, Inc.
   4 ;;; Contributed by Red Hat, Inc.
   5 ;;;
   6 ;;; This file is part of the GNU simulators.
   7 ;;;
   8 ;;; This program is free software; you can redistribute it and/or modify
   9 ;;; it under the terms of the GNU General Public License as published by
  10 ;;; the Free Software Foundation; either version 3 of the License, or
  11 ;;; (at your option) any later version.
  12 ;;;
  13 ;;; This program is distributed in the hope that it will be useful,
  14 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 ;;; GNU General Public License for more details.
  17 ;;;
  18 ;;; You should have received a copy of the GNU General Public License
  19 ;;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20
  21         .text
  22
  23         .global _start
  24 _start:
  25         mov.w   #0xe1,a0
  26 top:
  27         sub.w   #1,r0
  28         mov.b   r0h,[a0]
  29
  30         mov.w   #1000,r1
  31 loop:
  32         adjnz.w #-1,r1,loop
  33
  34         jmp.w   top