gdb/start.s

   1 !***************************************************************************
   2 !             __________               __   ___.
   3 !   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4 !   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5 !   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6 !   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7 !                     \/            \/     \/    \/            \/
   8 ! $Id$
   9 !
  10 ! Copyright (C) 2002 by Linus Nielsen Feltzing
  11 !
  12 ! All files in this archive are subject to the GNU General Public License.
  13 ! See the file COPYING in the source tree root for full license agreement.
  14 !
  15 ! This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  16 ! KIND, either express or implied.
  17 !
  18 !***************************************************************************
  19 ! note: sh-1 has a "delay cycle" after every branch where you can
  20 ! execute another instruction "for free".
  21
  22         .file   "start.s"
  23         .section        .text
  24         .extern _INIT
  25         .extern _vectable
  26         .extern _stack
  27         .global _start
  28         .align  2
  29
  30 _start:
  31         mov.l   1f, r1
  32         mov.l   3f, r3
  33         mov.l   2f, r15
  34         jmp     @r3
  35         ldc     r1, vbr
  36         nop
  37
  38 1:      .long   _vectable
  39 2:      .long   _stack
  40 3:      .long   _INIT
  41         .type           _start,@function