1/* $OpenBSD: db_machdep.h,v 1.21 2021/08/30 08:11:12 jasper Exp $ */
2
3/*
4 * Copyright (c) 1998-2003 Opsycon AB (www.opsycon.se)
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 */
28
29#ifndef _MIPS64_DB_MACHDEP_H_
30#define _MIPS64_DB_MACHDEP_H_
31
32#include <machine/frame.h>
33#include <machine/trap.h>
34#include <uvm/uvm_param.h>
35
36#define DB_MACHINE_COMMANDS /* We have machine specific commands */
37
38typedef struct trapframe db_regs_t;
39extern db_regs_t ddb_regs;
40
41typedef long db_expr_t;
42
43#define SOFTWARE_SSTEP /* Need software single step */
44#define SOFTWARE_SSTEP_EMUL /* next_instr_address() emulates 100% */
45vaddr_t next_instr_address(vaddr_t, int);
46#define BKPT_SIZE (4)
47#define BKPT_SET(ins) (BREAK_DDB)
48#define DB_VALID_BREAKPOINT(addr) (((addr) & 3) == 0)
49
50#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAK)
51#define IS_WATCHPOINT_TRAP(type, code) (0) /* XXX mips3 watchpoint */
52
53#define PC_REGS(regs) ((vaddr_t)(regs)->pc)
54#define SET_PC_REGS(regs, value) (regs)->pc = (register_t)(value)
55
56/*
57 * Test of instructions to see class.
58 */
59#define inst_branch(i) (classify_insn(i) == INSNCLASS_BRANCH)
60#define inst_trap_return(i) ((i) & 0)
61#define inst_call(i) (classify_insn(i) == INSNCLASS_CALL)
62#define inst_return(i) ((i) == 0x03e00008)
63
64void db_machine_init(void);
65
66int db_enter_ddb(void);
67void db_startcpu(int);
68void db_stopcpu(int);
69
70int dbmd_print_insn(uint32_t, vaddr_t, int (*)(const char *, ...));
71
72#define DDB_STATE_NOT_RUNNING 0
73#define DDB_STATE_RUNNING 1
74#define DDB_STATE_EXITING 2
75
76#endif /* !_MIPS64_DB_MACHDEP_H_ */