1/*-
2 * Copyright (c) 2000, 2001 Ben Harris
3 * Copyright (c) 1996 Scott K. Stevens
4 *
5 * Mach Operating System
6 * Copyright (c) 1991,1990 Carnegie Mellon University
7 * All Rights Reserved.
8 *
9 * Permission to use, copy, modify and distribute this software and its
10 * documentation is hereby granted, provided that both the copyright
11 * notice and this permission notice appear in all copies of the
12 * software, derivative works or modified versions, and any portions
13 * thereof, and that both notices appear in supporting documentation.
14 *
15 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
16 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
17 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
18 *
19 * Carnegie Mellon requests users of this software to return to
20 *
21 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
22 *  School of Computer Science
23 *  Carnegie Mellon University
24 *  Pittsburgh PA 15213-3890
25 *
26 * any improvements or extensions that they make and grant Carnegie the
27 * rights to redistribute these changes.
28 *
29 * $FreeBSD$
30 */
31
32#ifndef _MACHINE_STACK_H_
33#define	_MACHINE_STACK_H_
34
35#define INKERNEL(va)	(((vm_offset_t)(va)) >= VM_MIN_KERNEL_ADDRESS)
36
37#define FR_SCP	(0)
38#define FR_RLV	(-1)
39#define FR_RSP	(-2)
40#define FR_RFP	(-3)
41
42/* The state of the unwind process */
43struct unwind_state {
44	uint32_t registers[16];
45	uint32_t start_pc;
46	uint32_t *insn;
47	u_int entries;
48	u_int byte;
49	uint16_t update_mask;
50};
51
52/* The register names */
53#define	FP	11
54#define	SP	13
55#define	LR	14
56#define	PC	15
57
58int unwind_stack_one(struct unwind_state *, int);
59
60#endif /* !_MACHINE_STACK_H_ */
61