Initial import of arm32 port

1 files changed, 98 insertions, 0 deletions

diff --git a/sys/arch/arm32/boot/areahand.S b/sys/arch/arm32/boot/areahand.S
new file mode 100644
index 00000000000..fe0a2f26e54
--- /dev/null
+++ b/sys/arch/arm32/boot/areahand.S
@@ -0,0 +1,98 @@
+/* $NetBSD: areahand.S,v 1.1 1996/01/31 23:18:01 mark Exp $ */
+
+/*
+ * Copyright (c) 1994 Mark Brinicombe.
+ * Copyright (c) 1994 Brini.
+ * All rights reserved.
+ *
+ * This code is derived from software written for Brini by Mark Brinicombe
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by Brini.
+ * 4. The name of the company nor the name of the author may be used to
+ *    endorse or promote products derived from this software without specific
+ *    prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * RiscBSD kernel project
+ *
+ * areahand.s
+ *
+ *
+ *
+ * Created      : 12/09/94
+ * Last updated : 12/09/94
+ *
+ *    $Id: areahand.S,v 1.1 1996/04/24 11:08:31 deraadt Exp $
+ */
+
+#include "regs.h"
+
+	.text
+	.global	_kernarea_handler
+/*
+ * r0 - code
+ * r1 - page block
+ * r2 - entries
+ * r3 - size increase
+ * r4 - current size
+ * r5 - pagesize
+ * r12 - arrangement table
+ */
+
+_kernarea_handler:
+/* Is it a pregrow request ? */
+	teq	r0, #0x00000000
+	bicnes	pc, lr, #1<<28
+
+/* Make sure that the area is currently 0 in size */
+	teq	r4, #0x00000000
+	movne	r0, #0x000000
+	orrnes	pc, lr, #1<<28
+
+	teq	r1, #0x00000000
+	biceqs	pc, lr, #1<<28
+
+/* Store registers */
+	stmfd	sp!, {r0-r12}
+
+/* Get first page number */
+	ldr	r8, [r12, #0x0004]
+	sub	r8, r8, r2
+	mov	r8, #0x00000700
+	str	r1, [r12]
+
+loop:
+	str	r8, [r1], #0x000c
+	add	r8, r8, #0x00000001
+	subs	r2, r2, #0x00000001
+	bne	loop
+
+	ldmfd	sp!, {r0-r12}
+/*	bics	pc, lr, #1<<28 */
+	adr	r0, error1
+	orrs	pc, lr, #1<<28
+
+error1:
+	.word	0
+	.asciz	"error1"