aboutsummaryrefslogtreecommitdiff
path: root/src/target/armv7a.h
blob: c5e3257be2f60ad933afd14367a28f0529870c40 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
/***************************************************************************
 *    Copyright (C) 2009 by David Brownell                                 *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/
#ifndef ARMV7A_H
#define ARMV7A_H

#include "register.h"
#include "target.h"
#include "log.h"
#include "arm_adi_v5.h"
#include "armv4_5.h"
#include "armv4_5_mmu.h"
#include "armv4_5_cache.h"

typedef enum armv7a_mode
{
	ARMV7A_MODE_USR = 16,
	ARMV7A_MODE_FIQ = 17,
	ARMV7A_MODE_IRQ = 18,
	ARMV7A_MODE_SVC = 19,
	ARMV7A_MODE_ABT = 23,
	ARMV7A_MODE_UND = 27,
	ARMV7A_MODE_SYS = 31,
	ARMV7A_MODE_MON = 22,
	ARMV7A_MODE_ANY = -1
} armv7a_t;

extern char **armv7a_mode_strings;

typedef enum armv7a_state
{
	ARMV7A_STATE_ARM,
	ARMV7A_STATE_THUMB,
	ARMV7A_STATE_JAZELLE,
	ARMV7A_STATE_THUMBEE,
} armv7a_state_t;

extern char *armv7a_state_strings[];

extern int armv7a_core_reg_map[8][17];

#define ARMV7A_CORE_REG_MODE(cache, mode, num) \
		cache->reg_list[armv7a_core_reg_map[armv7a_mode_to_number(mode)][num]]
#define ARMV7A_CORE_REG_MODENUM(cache, mode, num) \
		cache->reg_list[armv7a_core_reg_map[mode][num]]

enum
{
	ARM_PC  = 15,
	ARM_CPSR = 16
}
;
/* offsets into armv4_5 core register cache */
enum
{
	ARMV7A_CPSR = 31,
	ARMV7A_SPSR_FIQ = 32,
	ARMV7A_SPSR_IRQ = 33,
	ARMV7A_SPSR_SVC = 34,
	ARMV7A_SPSR_ABT = 35,
	ARMV7A_SPSR_UND = 36
};

#define ARMV4_5_COMMON_MAGIC 0x0A450A45
#define ARMV7_COMMON_MAGIC 0x0A450999

/* VA to PA translation operations opc2 values*/
#define V2PCWPR  0
#define V2PCWPW  1
#define V2PCWUR  2
#define V2PCWUW  3
#define V2POWPR  4
#define V2POWPW  5
#define V2POWUR  6
#define V2POWUW  7

typedef struct armv7a_common_s
{
	int common_magic;
	reg_cache_t *core_cache;
	enum armv7a_mode core_mode;
	enum armv7a_state core_state;

	/* arm adp debug port */
	swjdp_common_t swjdp_info;

	/* Core Debug Unit */
	uint32_t debug_base;
	uint8_t debug_ap;
	uint8_t memory_ap;

	/* Cache and Memory Management Unit */
	armv4_5_mmu_common_t armv4_5_mmu;
	armv4_5_common_t armv4_5_common;
	void *arch_info;

//	int (*full_context)(struct target_s *target);
//	int (*read_core_reg)(struct target_s *target, int num, enum armv7a_mode mode);
//	int (*write_core_reg)(struct target_s *target, int num, enum armv7a_mode mode, u32 value);
	int (*read_cp15)(struct target_s *target,
			uint32_t op1, uint32_t op2,
			uint32_t CRn, uint32_t CRm, uint32_t *value);
	int (*write_cp15)(struct target_s *target,
			uint32_t op1, uint32_t op2,
			uint32_t CRn, uint32_t CRm, uint32_t value);

	int (*examine_debug_reason)(target_t *target);
	void (*post_debug_entry)(target_t *target);

	void (*pre_restore_context)(target_t *target);
	void (*post_restore_context)(target_t *target);

} armv7a_common_t;

typedef struct armv7a_algorithm_s
{
	int common_magic;

	enum armv7a_mode core_mode;
	enum armv7a_state core_state;
} armv7a_algorithm_t;

typedef struct armv7a_core_reg_s
{
	int num;
	enum armv7a_mode mode;
	target_t *target;
	armv7a_common_t *armv7a_common;
} armv7a_core_reg_t;

int armv7a_arch_state(struct target_s *target);
reg_cache_t *armv7a_build_reg_cache(target_t *target,
		armv7a_common_t *armv7a_common);
int armv7a_register_commands(struct command_context_s *cmd_ctx);
int armv7a_init_arch_info(target_t *target, armv7a_common_t *armv7a);

/* map psr mode bits to linear number */
static inline int armv7a_mode_to_number(enum armv7a_mode mode)
{
	switch (mode)
	{
		case ARMV7A_MODE_USR: return 0; break;
		case ARMV7A_MODE_FIQ: return 1; break;
		case ARMV7A_MODE_IRQ: return 2; break;
		case ARMV7A_MODE_SVC: return 3; break;
		case ARMV7A_MODE_ABT: return 4; break;
		case ARMV7A_MODE_UND: return 5; break;
		case ARMV7A_MODE_SYS: return 6; break;
		case ARMV7A_MODE_MON: return 7; break;
		case ARMV7A_MODE_ANY: return 0; break;	/* map MODE_ANY to user mode */
		default:
			LOG_ERROR("invalid mode value encountered, val %d", mode);
			return -1;
	}
}

/* map linear number to mode bits */
static inline enum armv7a_mode armv7a_number_to_mode(int number)
{
	switch(number)
	{
		case 0: return ARMV7A_MODE_USR; break;
		case 1: return ARMV7A_MODE_FIQ; break;
		case 2: return ARMV7A_MODE_IRQ; break;
		case 3: return ARMV7A_MODE_SVC; break;
		case 4: return ARMV7A_MODE_ABT; break;
		case 5: return ARMV7A_MODE_UND; break;
		case 6: return ARMV7A_MODE_SYS; break;
		case 7: return ARMV7A_MODE_MON; break;
		default:
			LOG_ERROR("mode index out of bounds");
			return ARMV7A_MODE_ANY;
	}
};


#endif /* ARMV4_5_H */