db_machdep.h revision 1.4 
1/*	$OpenBSD: db_machdep.h,v 1.4 2019/11/07 14:44:52 mpi 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#include <machine/trap.h>
44
45/* end of mangling */
46
47typedef	vaddr_t		db_addr_t;	/* address - unsigned */
48typedef	long		db_expr_t;	/* expression - signed */
49
50typedef trapframe_t db_regs_t;
51
52extern db_regs_t		ddb_regs;	/* register state */
53#define	DDB_REGS	(&ddb_regs)
54
55#define	PC_REGS(regs)	((vaddr_t)(regs)->tf_lr)
56#define	SET_PC_REGS(regs, value)	(regs)->tf_lr = (register_t)(value)
57
58#define	BKPT_INST	(KERNEL_BREAKPOINT)	/* breakpoint instruction */
59#define	BKPT_SIZE	(INSN_SIZE)		/* size of breakpoint inst */
60#define	BKPT_SET(inst)	(BKPT_INST)
61
62/*#define FIXUP_PC_AFTER_BREAK(regs)	((regs)->tf_lr -= BKPT_SIZE)*/
63
64#define T_BREAKPOINT			(1)
65
66#define	IS_BREAKPOINT_TRAP(type, code)	((type) == T_BREAKPOINT)
67#define IS_WATCHPOINT_TRAP(type, code)	(0)
68
69// ALL BROKEN!!!
70#define	inst_trap_return(ins)	((ins) == 0 && (ins) == 1)
71#define	inst_return(ins)	((ins) == 0 && (ins) == 1)
72
73#define	inst_call(ins)		((ins) == 0 && (ins) == 1)
74#define	inst_branch(ins)	((ins) == 0 && (ins) == 1)
75#define inst_unconditional_flow_transfer(ins)	(0)
76
77#define getreg_val			(0)
78#define next_instr_address(pc, bd)	((bd) ? (pc) : ((pc) + INSN_SIZE))
79
80#define DB_MACHINE_COMMANDS
81
82#define SOFTWARE_SSTEP
83
84vaddr_t	db_branch_taken(u_int inst, vaddr_t pc, db_regs_t *regs);
85int kdb_trap (int, db_regs_t *);
86void db_machine_init (void);
87
88#define branch_taken(ins, pc, fun, regs) \
89	db_branch_taken((ins), (pc), (regs))
90
91void db_show_frame_cmd(db_expr_t, int, db_expr_t, char *);
92
93#define DDB_STATE_NOT_RUNNING	0
94#define DDB_STATE_RUNNING	1
95#define DDB_STATE_EXITING	2
96
97#endif	/* _MACHINE_DB_MACHDEP_H_ */
98