From f8b27df985a1c65b329164fe1f57ca348fe862c1 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Fri, 20 Mar 1998 17:20:45 +0000
Subject: New port from Ralf Corsepius <corsepiu@faw.uni-ulm.de>.

---
 c/src/lib/start/sh/start.s | 92 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 c/src/lib/start/sh/start.s

(limited to 'c/src/lib/start/sh/start.s')

diff --git a/c/src/lib/start/sh/start.s b/c/src/lib/start/sh/start.s
new file mode 100644
index 0000000000..582ea66a75
--- /dev/null
+++ b/c/src/lib/start/sh/start.s
@@ -0,0 +1,92 @@
+/*
+ *  Authors: Ralf Corsepius (corsepiu@faw.uni-ulm.de) and
+ *           Bernd Becker (becker@faw.uni-ulm.de)
+ *
+ *  COPYRIGHT (c) 1997-1998, FAW Ulm, Germany
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ *
+ *  COPYRIGHT (c) 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.
+ *
+ *  $Id$
+ */
+
+#include "asm.h"
+
+	BEGIN_CODE
+	PUBLIC(start)
+SYM (start):
+        ! install the stack pointer
+	mov.l	stack_k,r15
+
+	! zero out bss
+	mov.l	edata_k,r0
+	mov.l	end_k,r1
+	mov	#0,r2
+start_l:
+	mov.l	r2,@r0
+	add	#4,r0
+	cmp/ge	r0,r1
+	bt	start_l
+
+	! copy the vector table from rom to ram
+	mov.l   vects_k,r7   	! vectab
+	mov	#0,r2		! address of boot vector table
+	mov     #0,r3		| number of bytes copied
+	mov.w   vects_size,r6   ! size of entries in vectab
+0:
+	mov.l   @r2+,r1
+	mov.l   r1,@r7
+	add     #4,r7
+	add     #1,r3
+	cmp/hi  r6,r3
+	bf      0b
+
+	mov.l   vects_k,r8   	! update vbr to point to vectab
+	ldc     r8,vbr
+
+	! call the mainline	
+	mov.l	main_k,r0
+	jsr	@r0
+	or	r0,r0
+
+	! call exit
+	mov	r0,r4
+	mov.l	exit_k,r0
+	jsr	@r0
+	or	r0,r0
+
+	END_CODE
+
+	.align 2
+stack_k:
+	.long	_stack	
+edata_k:
+	.long	_edata
+end_k:
+	.long	_end
+main_k:
+	.long	_main
+exit_k:
+	.long	_exit
+
+vects_k:
+	.long	_vectab
+vects_size:
+	.word	255
+
+#ifdef __ELF__
+	.section .stack,"aw"
+#else
+	.section .stack
+#endif
+_stack:	.long	0xdeaddead
-- 
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