diff options
Diffstat (limited to 'c/src/exec/score/cpu/m68k/rtems.s')
| -rw-r--r-- | c/src/exec/score/cpu/m68k/rtems.s | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/c/src/exec/score/cpu/m68k/rtems.s b/c/src/exec/score/cpu/m68k/rtems.s new file mode 100644 index 0000000000..faae97e487 --- /dev/null +++ b/c/src/exec/score/cpu/m68k/rtems.s @@ -0,0 +1,46 @@ +/* rtems.s + * + * This file contains the single entry point code for + * the m68k implementation of RTEMS. + * + * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. + * On-Line Applications Research Corporation (OAR). + * All rights assigned to U.S. Government, 1994. + * + * This material may be reproduced by or for the U.S. Government pursuant + * to the copyright license under the clause at DFARS 252.227-7013. This + * notice must appear in all copies of this file and its derivatives. + * + * $Id$ + */ + + +#include <asm.h> + +/* + * There seems to be no reason to have two versions of this. + * The following version should work across the entire family. + * The worst assumption is that gcc will put entry in a scratch + * register and not screw up the stack. + * + * NOTE: This is a 68020 version: + * + * jmpl @(%%d0:l:4)@(__Entry_points) + */ + + EXTERN (_Entry_points) + + BEGIN_CODE + + .align 4 + .global SYM (RTEMS) + +SYM (RTEMS): + moveal SYM (_Entry_points), a0 + lsll #2, d0 + addal d0, a0 + moveal @(a0),a0 + jmpl @(a0) + + END_CODE +END |