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/***************************************************************************
* 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 "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 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
struct armv7a_common
{
int common_magic;
struct reg_cache *core_cache;
enum armv7a_mode core_mode;
enum armv7a_state core_state;
/* arm adp debug port */
struct swjdp_common swjdp_info;
/* Core Debug Unit */
uint32_t debug_base;
uint8_t debug_ap;
uint8_t memory_ap;
/* Cache and Memory Management Unit */
struct armv4_5_mmu_common armv4_5_mmu;
struct arm armv4_5_common;
// int (*full_context)(struct target *target);
// int (*read_core_reg)(struct target *target, int num, enum armv7a_mode mode);
// int (*write_core_reg)(struct target *target, int num, enum armv7a_mode mode, u32 value);
int (*read_cp15)(struct target *target,
uint32_t op1, uint32_t op2,
uint32_t CRn, uint32_t CRm, uint32_t *value);
int (*write_cp15)(struct target *target,
uint32_t op1, uint32_t op2,
uint32_t CRn, uint32_t CRm, uint32_t value);
int (*examine_debug_reason)(struct target *target);
void (*post_debug_entry)(struct target *target);
void (*pre_restore_context)(struct target *target);
void (*post_restore_context)(struct target *target);
};
static inline struct armv7a_common *
target_to_armv7a(struct target *target)
{
return container_of(target->arch_info, struct armv7a_common,
armv4_5_common);
}
struct armv7a_algorithm
{
int common_magic;
enum armv7a_mode core_mode;
enum armv7a_state core_state;
};
struct armv7a_core_reg
{
int num;
enum armv7a_mode mode;
struct target *target;
struct armv7a_common *armv7a_common;
};
int armv7a_arch_state(struct target *target);
struct reg_cache *armv7a_build_reg_cache(struct target *target,
struct armv7a_common *armv7a_common);
int armv7a_register_commands(struct command_context *cmd_ctx);
int armv7a_init_arch_info(struct target *target, struct armv7a_common *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 */
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