1/*	$NetBSD: arm32_machdep.c,v 1.44 2004/03/24 15:34:47 atatat Exp $	*/
2
3/*-
4 * Copyright (c) 2004 Olivier Houchard
5 * Copyright (c) 1994-1998 Mark Brinicombe.
6 * Copyright (c) 1994 Brini.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31#include "opt_ddb.h"
32
33#include <sys/cdefs.h>
34__FBSDID("$FreeBSD: stable/11/sys/arm/arm/machdep_kdb.c 341491 2018-12-04 19:07:10Z markj $");
35
36#include <sys/param.h>
37#include <sys/proc.h>
38#include <sys/systm.h>
39
40#include <machine/cpu.h>
41#include <machine/reg.h>
42
43#ifdef DDB
44#include <ddb/ddb.h>
45
46#if __ARM_ARCH >= 6
47
48DB_SHOW_COMMAND(cp15, db_show_cp15)
49{
50	u_int reg;
51
52	reg = cp15_midr_get();
53	db_printf("Cpu ID: 0x%08x\n", reg);
54	reg = cp15_ctr_get();
55	db_printf("Current Cache Lvl ID: 0x%08x\n",reg);
56
57	reg = cp15_sctlr_get();
58	db_printf("Ctrl: 0x%08x\n",reg);
59	reg = cp15_actlr_get();
60	db_printf("Aux Ctrl: 0x%08x\n",reg);
61
62	reg = cp15_id_pfr0_get();
63	db_printf("Processor Feat 0: 0x%08x\n", reg);
64	reg = cp15_id_pfr1_get();
65	db_printf("Processor Feat 1: 0x%08x\n", reg);
66	reg = cp15_id_dfr0_get();
67	db_printf("Debug Feat 0: 0x%08x\n", reg);
68	reg = cp15_id_afr0_get();
69	db_printf("Auxiliary Feat 0: 0x%08x\n", reg);
70	reg = cp15_id_mmfr0_get();
71	db_printf("Memory Model Feat 0: 0x%08x\n", reg);
72	reg = cp15_id_mmfr1_get();
73	db_printf("Memory Model Feat 1: 0x%08x\n", reg);
74	reg = cp15_id_mmfr2_get();
75	db_printf("Memory Model Feat 2: 0x%08x\n", reg);
76	reg = cp15_id_mmfr3_get();
77	db_printf("Memory Model Feat 3: 0x%08x\n", reg);
78	reg = cp15_ttbr_get();
79	db_printf("TTB0: 0x%08x\n", reg);
80}
81
82DB_SHOW_COMMAND(vtop, db_show_vtop)
83{
84	u_int reg;
85
86	if (have_addr) {
87		cp15_ats1cpr_set(addr);
88		reg = cp15_par_get();
89		db_printf("Physical address reg: 0x%08x\n",reg);
90	} else
91		db_printf("show vtop <virt_addr>\n");
92}
93#endif /* __ARM_ARCH >= 6 */
94#endif /* DDB */
95
96int
97fill_regs(struct thread *td, struct reg *regs)
98{
99	struct trapframe *tf = td->td_frame;
100	bcopy(&tf->tf_r0, regs->r, sizeof(regs->r));
101	regs->r_sp = tf->tf_usr_sp;
102	regs->r_lr = tf->tf_usr_lr;
103	regs->r_pc = tf->tf_pc;
104	regs->r_cpsr = tf->tf_spsr;
105	return (0);
106}
107
108int
109fill_fpregs(struct thread *td, struct fpreg *regs)
110{
111	bzero(regs, sizeof(*regs));
112	return (0);
113}
114
115int
116set_regs(struct thread *td, struct reg *regs)
117{
118	struct trapframe *tf = td->td_frame;
119
120	bcopy(regs->r, &tf->tf_r0, sizeof(regs->r));
121	tf->tf_usr_sp = regs->r_sp;
122	tf->tf_usr_lr = regs->r_lr;
123	tf->tf_pc = regs->r_pc;
124	tf->tf_spsr &=  ~PSR_FLAGS;
125	tf->tf_spsr |= regs->r_cpsr & PSR_FLAGS;
126	return (0);
127}
128
129int
130set_fpregs(struct thread *td, struct fpreg *regs)
131{
132	return (0);
133}
134
135int
136fill_dbregs(struct thread *td, struct dbreg *regs)
137{
138
139	bzero(regs, sizeof(*regs));
140	return (0);
141}
142
143int
144set_dbregs(struct thread *td, struct dbreg *regs)
145{
146	return (0);
147}
148