1 /* $NetBSD: bcopyinout.S,v 1.11 2003/10/13 21:22:40 scw Exp $ */
4 * Copyright (c) 2002 Wasabi Systems, Inc.
7 * Written by Allen Briggs for Wasabi Systems, Inc.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed for the NetBSD Project by
20 * Wasabi Systems, Inc.
21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
22 * or promote products derived from this software without specific prior
25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
41 #include <machine/asm.h>
42 #include <sys/errno.h>
45 .word _C_LABEL(_arm_memcpy)
47 .word _C_LABEL(_min_memcpy_size)
49 __FBSDID("$FreeBSD$");
50 #include <arm/arm/bcopyinout_xscale.S>
53 * int badaddr_read_1(const uint8_t *src, uint8_t *dest)
55 * Copies a single 8-bit value from src to dest, returning 0 on success,
56 * else EFAULT if a page fault occurred.
62 ldr ip, [r2, #PCB_ONFAULT]
64 str r3, [r2, #PCB_ONFAULT]
73 mov r0, #0 /* No fault */
74 1: str ip, [r2, #PCB_ONFAULT]
79 * int badaddr_read_2(const uint16_t *src, uint16_t *dest)
81 * Copies a single 16-bit value from src to dest, returning 0 on success,
82 * else EFAULT if a page fault occurred.
88 ldr ip, [r2, #PCB_ONFAULT]
90 str r3, [r2, #PCB_ONFAULT]
99 mov r0, #0 /* No fault */
100 1: str ip, [r2, #PCB_ONFAULT]
105 * int badaddr_read_4(const uint32_t *src, uint32_t *dest)
107 * Copies a single 32-bit value from src to dest, returning 0 on success,
108 * else EFAULT if a page fault occurred.
110 ENTRY(badaddr_read_4)
114 ldr ip, [r2, #PCB_ONFAULT]
116 str r3, [r2, #PCB_ONFAULT]
125 mov r0, #0 /* No fault */
126 1: str ip, [r2, #PCB_ONFAULT]