custom message type for VM_INFO
[minix3.git] / sys / arch / arm / include / trap.h
blobff1e95847f2b8436346ce1a6d23261b11143c62d
1 /* $NetBSD: trap.h,v 1.8 2008/01/19 13:11:09 chris Exp $ */
3 /*
4 * Copyright (c) 1995 Mark Brinicombe.
5 * All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Mark Brinicombe.
18 * 4. The name of the company nor the name of the author may be used to
19 * endorse or promote products derived from this software without specific
20 * prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
26 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
27 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
34 * RiscBSD kernel project
36 * trap.h
38 * Various trap definitions
42 * Instructions used for breakpoints.
44 * These are undefined instructions.
45 * Technically the userspace breakpoint could be a SWI but we want to
46 * keep this the same as IPKDB which needs an undefined instruction as
47 * a break point.
49 * Ideally ARM would define several standard instruction sequences for
50 * use as breakpoints.
52 * The BKPT instruction isn't much use to us, since its behaviour is
53 * unpredictable on ARMv3 and lower.
55 * The ARM ARM says that for maximum compatibility, we should use undefined
56 * instructions that look like 0x.7f...f. .
59 #define GDB_BREAKPOINT 0xe6000011 /* Used by GDB 4.x */
60 #define IPKDB_BREAKPOINT_DEAD 0xe6000010 /* was used by IPKDB */
61 #define GDB5_BREAKPOINT 0xe7ffdefe /* Used by GDB 5.0 */
62 #define GDB_THUMB_BREAKPOINT 0xdefe /* Thumb in GDB */
63 #define KERNEL_BREAKPOINT 0xe7ffffff /* Used by DDB */
65 #define KBPT_ASM ".word 0xe7ffdefe"
67 #define USER_BREAKPOINT GDB_BREAKPOINT
69 /* End of trap.h */