1/* $OpenBSD: db_machdep.h,v 1.8 2025/07/22 09:20:41 kettenis Exp $ */
2/* $NetBSD: db_machdep.h,v 1.5 2001/11/22 18:00:00 thorpej Exp $ */
3
4/*
5 * Copyright (c) 1996 Scott K Stevens
6 *
7 * Mach Operating System
8 * Copyright (c) 1991,1990 Carnegie Mellon University
9 * All Rights Reserved.
10 *
11 * Permission to use, copy, modify and distribute this software and its
12 * documentation is hereby granted, provided that both the copyright
13 * notice and this permission notice appear in all copies of the
14 * software, derivative works or modified versions, and any portions
15 * thereof, and that both notices appear in supporting documentation.
16 *
17 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
18 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
19 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
20 *
21 * Carnegie Mellon requests users of this software to return to
22 *
23 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
24 * School of Computer Science
25 * Carnegie Mellon University
26 * Pittsburgh PA 15213-3890
27 *
28 * any improvements or extensions that they make and grant Carnegie Mellon
29 * the rights to redistribute these changes.
30 */
31
32#ifndef _MACHINE_DB_MACHDEP_H_
33#define _MACHINE_DB_MACHDEP_H_
34
35/*
36 * Machine-dependent defines for new kernel debugger.
37 */
38
39#include <sys/param.h>
40#include <uvm/uvm_extern.h>
41#include <machine/armreg.h>
42#include <machine/frame.h>
43
44/* end of mangling */
45
46typedef long db_expr_t; /* expression - signed */
47
48typedef trapframe_t db_regs_t;
49
50extern db_regs_t ddb_regs; /* register state */
51#define DDB_REGS (&ddb_regs)
52
53#define PC_REGS(regs) ((vaddr_t)(regs)->tf_elr)
54#define SET_PC_REGS(regs, value) (regs)->tf_elr = (register_t)(value)
55
56#define BKPT_INST 0xd4200000 /* breakpoint instruction */
57#define BKPT_SIZE (INSN_SIZE) /* size of breakpoint inst */
58#define BKPT_SET(inst) (BKPT_INST)
59
60#define db_clear_single_step(regs) ((regs)->tf_spsr &= ~PSR_SS)
61#define db_set_single_step(regs) ((regs)->tf_spsr |= PSR_SS)
62
63#define IS_BREAKPOINT_TRAP(type, code) ((type) == EXCP_BRK)
64#define IS_WATCHPOINT_TRAP(type, code) ((type) == EXCP_WATCHPT_EL1)
65
66// ALL BROKEN!!!
67#define inst_trap_return(ins) ((ins) == 0 && (ins) == 1)
68#define inst_return(ins) ((ins) == 0 && (ins) == 1)
69#define inst_call(ins) ((ins) == 0 && (ins) == 1)
70
71#define DB_MACHINE_COMMANDS
72
73int db_ktrap(int, db_regs_t *);
74void db_machine_init (void);
75
76#define DDB_STATE_NOT_RUNNING 0
77#define DDB_STATE_RUNNING 1
78#define DDB_STATE_EXITING 2
79
80#endif /* _MACHINE_DB_MACHDEP_H_ */