1 files changed, 107 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/m68k/ods68302/start302/debugreset.S b/c/src/lib/libbsp/m68k/ods68302/start302/debugreset.S
new file mode 100644
index 0000000000..74049191c4
--- /dev/null
+++ b/c/src/lib/libbsp/m68k/ods68302/start302/debugreset.S
@@ -0,0 +1,107 @@
+/*  
+ *  $Id$
+ *
+ *  Re-written the gen68302 start-up code.
+ *  
+ *  Uses gas syntax only, removed the OAR asm.h.
+ *  
+ *  Supplies a complete vector table in ROM.
+ *  
+ *  Manages all vectors with seperate handlers to trap unhandled
+ *  execptions.
+ *  
+ *  Uses the target specific header file to get the runtime 
+ *  configuration
+ *  
+ *  COPYRIGHT (c) 1996
+ *  Objective Design Systems Pty Ltd (ODS)
+ *        
+ *  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.
+ *
+ */
+
+|
+| Entry from debugger
+|
+        .sect   .text
+
+|
+| Start
+|
+| Entered from a hardware reset.
+|
+        
+        .global start                           | Default entry point for GNU
+start:
+
+        move.w  #0x2700,%sr                     | Disable all interrupts
+
+        |
+        | zero out uninitialized data area
+        |
+
+zerobss:
+        moveal  #end,%a0                        | find end of .bss
+        moveal  #bss_start,%a1                  | find beginning of .bss
+        moveq   #0,%d0
+        
+zerobss_loop:
+        
+        movel   %d0,%a1@+                       | to zero out uninitialized
+        cmpal   %a0,%a1
+        jlt     zerobss_loop                    | loop until _end reached
+
+        movel   #end,%d0                        | d0 = end of bss/start of heap
+        addl    #heap_size,%d0                  | d0 = end of heap
+
+        movel   %d0,stack_start                 | Save for brk() routine
+        addl    #stack_size,%d0                 | make room for stack
+        andl    #0xffffffc0,%d0                 | align it on 16 byte boundary
+
+        movw    #0x3700,%sr                     | SUPV MODE,INTERRUPTS OFF!!!
+        movel   %d0,%a7                         | set master stack pointer
+        movel   %d0,%a6                         | set base pointer
+
+        jsr     boot_phase_3
+
+|                
+| Initialised data
+|
+
+        .sect   .data
+        
+        .global start_frame
+        
+start_frame:
+        .space  4,0
+
+        .global stack_start
+        
+stack_start:
+        .space  4,0
+
+|
+| Uninitialised data
+|
+
+        .sect   .bss
+        
+        .global environ
+        .align  2
+        
+environ:
+        .long   0
+
+        .global heap_size
+        .set    heap_size,0x2000
+
+        .global stack_size
+        .set    stack_size,0x1000
+
+