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m68k/test/sram-test.S

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+/*
+ *
+ *  This file contains the entry point for the application.
+ *  The name of this entry point is compiler dependent.
+ *  It jumps to the BSP which is responsible for performing
+ *  all initialization.
+ *
+ *  Author:
+ *    David Fiddes, D.J.Fiddes@hw.ac.uk
+ *    http://www.calm.hw.ac.uk/davidf/coldfire/
+ *
+ *    Chris Johns, ccj@acm.org
+ *    home web page, arrh you could then see me ...
+ *
+ *  COPYRIGHT (c) 1989-1998.
+ *  On-Line Applications Research Corporation (OAR).
+ *  Copyright assigned to U.S. Government, 1994.
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *  This is a hack up to get some code to be able to download
+ *  to the SRAM of a coldfire to test single step, go and
+ *  hitting a break.
+ *
+ */
+
+#define SRAMBAR 0x20000000
+
+        .sect code
+        
+entry:
+
+        move.w  #0x2700,%sr    | First turn off all interrupts!
+        move.l  #SRAMBAR,%sp    | Put the stack in SRAM
+        movea.l #0xa0a0a0a0,%a0    
+        movea.l #0xa1a1a1a1,%a1    
+        movea.l #0xa2a2a2a2,%a2    
+        movea.l #0xa3a3a3a3,%a3    
+        movea.l #0xa4a4a4a4,%a4    
+        movea.l #0xa5a5a5a5,%a5    
+        movea.l #0xa6a6a6a6,%a6    
+        movea.l #0xa7a7a7a7,%a7    
+        move.l  #0xd0d0d0d0,%d0    
+        move.l  #0xd1d1d1d1,%d1    
+        move.l  #0xd2d2d2d2,%d2    
+        move.l  #0xd3d3d3d3,%d3    
+        move.l  #0xd4d4d4d4,%d4    
+        move.l  #0xd5d5d5d5,%d5    
+        move.l  #0xd6d6d6d6,%d6    
+        move.l  #0xd7d7d7d7,%d7    
+
+        nop
+        nop
+        nop
+        nop
+        nop
+        nop
+        nop
+        nop
+        nop
+        nop
+        nop
+        nop
+        nop
+        nop
+
+        halt
+