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>
44 __FBSDID("$FreeBSD$");
45 #include <arm/arm/bcopyinout_xscale.S>
48 * int badaddr_read_1(const uint8_t *src, uint8_t *dest)
50 * Copies a single 8-bit value from src to dest, returning 0 on success,
51 * else EFAULT if a page fault occurred.
57 ldr ip, [r2, #PCB_ONFAULT]
59 str r3, [r2, #PCB_ONFAULT]
68 mov r0, #0 /* No fault */
69 1: str ip, [r2, #PCB_ONFAULT]
74 * int badaddr_read_2(const uint16_t *src, uint16_t *dest)
76 * Copies a single 16-bit value from src to dest, returning 0 on success,
77 * else EFAULT if a page fault occurred.
83 ldr ip, [r2, #PCB_ONFAULT]
85 str r3, [r2, #PCB_ONFAULT]
94 mov r0, #0 /* No fault */
95 1: str ip, [r2, #PCB_ONFAULT]
100 * int badaddr_read_4(const uint32_t *src, uint32_t *dest)
102 * Copies a single 32-bit value from src to dest, returning 0 on success,
103 * else EFAULT if a page fault occurred.
105 ENTRY(badaddr_read_4)
109 ldr ip, [r2, #PCB_ONFAULT]
111 str r3, [r2, #PCB_ONFAULT]
120 mov r0, #0 /* No fault */
121 1: str ip, [r2, #PCB_ONFAULT]