Initial import of arm32 port

1 files changed, 113 insertions, 0 deletions

diff --git a/sys/arch/arm32/boot/memcpy.S b/sys/arch/arm32/boot/memcpy.S
new file mode 100644
index 00000000000..68f843c7771
--- /dev/null
+++ b/sys/arch/arm32/boot/memcpy.S
@@ -0,0 +1,113 @@
+/* $NetBSD: memcpy.S,v 1.1 1996/01/31 23:18:17 mark Exp $ */
+
+/*
+ * Copyright (c) 1995 Mark Brinicombe.
+ * Copyright (c) 1995 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 BRINI 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
+ *
+ * memset.S
+ *
+ * optimized memset function
+ *
+ * Created      : 16/05/95
+ * Last updated : 16/05/95
+ *
+ *    $Id: memcpy.S,v 1.1 1996/04/24 11:08:32 deraadt Exp $
+ */
+
+sp	.req	r13
+lr	.req	r14
+pc	.req	r15
+
+.text
+	.global _bcopy
+	.global _ovbcopy
+
+_bcopy:
+_ovbcopy:
+	teq	r2, #0x00000000
+	moveq	r0, #0x00000000
+	moveq	pc, lr
+	cmp	r0, r1
+	blt	bcopy_back
+
+bcopy_loop:
+	ldrb	r3, [r0], #0x0001
+	strb	r3, [r1], #0x0001
+	subs	r2, r2, #0x00000001
+	bne	bcopy_loop
+
+	mov	pc, r14
+
+bcopy_back:
+	add	r0, r0, r2
+	add	r1, r1, r2
+
+bcopy_bloop:
+	ldrb	r3, [r0, #-0x0001]!
+	strb	r3, [r1, #-0x0001]!
+	subs	r2, r2, #0x00000001
+	bne	bcopy_bloop
+
+	mov	pc, r14
+
+
+	.global	_memcpy
+
+_memcpy:
+	teq	r2, #0x00000000
+	moveq	r0, #0x00000000
+	moveq	pc, lr
+	cmp	r1, r0
+	blt	memcpy_back
+
+memcpy_loop:
+	ldrb	r3, [r1], #0x0001
+	strb	r3, [r0], #0x0001
+	subs	r2, r2, #0x00000001
+	bne	memcpy_loop
+
+	mov	pc, r14
+
+memcpy_back:
+	add	r0, r0, r2
+	add	r1, r1, r2
+
+memcpy_bloop:
+	ldrb	r3, [r1, #-0x0001]!
+	strb	r3, [r0, #-0x0001]!
+	subs	r2, r2, #0x00000001
+	bne	memcpy_bloop
+
+	mov	pc, r14