diff options
author | Dale Rahn <drahn@cvs.openbsd.org> | 2004-02-01 05:09:50 +0000 |
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committer | Dale Rahn <drahn@cvs.openbsd.org> | 2004-02-01 05:09:50 +0000 |
commit | bad76f195320d5f8fe71dd2cdd09b7e6448ae62f (patch) | |
tree | c56802223bbfc0fdd07d88de003f59f99c2b72cb /sys/arch/arm/include/trap.h | |
parent | 208090c7a2e143dac12badc41a13eb79a817928e (diff) |
Arm port, NetBSD codebase stripped down, 32bit only support.
Diffstat (limited to 'sys/arch/arm/include/trap.h')
-rw-r--r-- | sys/arch/arm/include/trap.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/sys/arch/arm/include/trap.h b/sys/arch/arm/include/trap.h new file mode 100644 index 00000000000..d6346a42ef4 --- /dev/null +++ b/sys/arch/arm/include/trap.h @@ -0,0 +1,71 @@ +/* $OpenBSD: trap.h,v 1.1 2004/02/01 05:09:49 drahn Exp $ */ +/* $NetBSD: trap.h,v 1.4 2003/04/28 01:54:50 briggs Exp $ */ + +/* + * Copyright (c) 1995 Mark Brinicombe. + * All rights reserved. + * + * 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 Mark Brinicombe. + * 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 THE AUTHOR ``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 AUTHOR 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 + * + * trap.h + * + * Various trap definitions + */ + +/* + * Instructions used for breakpoints. + * + * These are undefined instructions. + * Technically the userspace breakpoint could be a SWI but we want to + * keep this the same as IPKDB which needs an undefined instruction as + * a break point. + * + * Ideally ARM would define several standard instruction sequences for + * use as breakpoints. + * + * The BKPT instruction isn't much use to us, since its behaviour is + * unpredictable on ARMv3 and lower. + * + * The ARM ARM says that for maximum compatibility, we should use undefined + * instructions that look like 0x.7f...f. . + */ + +#define GDB_BREAKPOINT 0xe6000011 /* Used by GDB 4.x */ +#define IPKDB_BREAKPOINT 0xe6000010 /* Used by IPKDB */ +#define GDB5_BREAKPOINT 0xe7ffdefe /* Used by GDB 5.0 */ +#define KERNEL_BREAKPOINT 0xe7ffffff /* Used by DDB */ + +#define KBPT_ASM ".word 0xe7ffdefe" + +#define USER_BREAKPOINT GDB_BREAKPOINT + +#define T_FAULT 1 + +/* End of trap.h */ |