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/***************************************************************************
* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
* Copyright (C) 2006 by Magnus Lundin *
* lundin@mlu.mine.nu *
* *
* Copyright (C) 2008 by Spencer Oliver *
* spen@spen-soft.co.uk *
* *
* 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 ARMV7M_COMMON_H
#define ARMV7M_COMMON_H
#include "arm_adi_v5.h"
#include "armv4_5.h"
/* define for enabling armv7 gdb workarounds */
#if 1
#define ARMV7_GDB_HACKS
#endif
enum armv7m_mode
{
ARMV7M_MODE_THREAD = 0,
ARMV7M_MODE_USER_THREAD = 1,
ARMV7M_MODE_HANDLER = 2,
ARMV7M_MODE_ANY = -1
};
extern char *armv7m_mode_strings[];
enum armv7m_regtype
{
ARMV7M_REGISTER_CORE_GP,
ARMV7M_REGISTER_CORE_SP,
ARMV7M_REGISTER_MEMMAP
};
char *armv7m_exception_string(int number);
/* offsets into armv7m core register cache */
enum
{
/* for convenience, the first set of indices match
* the Cortex-M3 DCRSR selectors
*/
ARMV7M_R0,
ARMV7M_R1,
ARMV7M_R2,
ARMV7M_R3,
ARMV7M_R4,
ARMV7M_R5,
ARMV7M_R6,
ARMV7M_R7,
ARMV7M_R8,
ARMV7M_R9,
ARMV7M_R10,
ARMV7M_R11,
ARMV7M_R12,
ARMV7M_R13,
ARMV7M_R14,
ARMV7M_PC = 15,
ARMV7M_xPSR = 16,
ARMV7M_MSP,
ARMV7M_PSP,
/* this next set of indices is arbitrary */
ARMV7M_PRIMASK,
ARMV7M_BASEPRI,
ARMV7M_FAULTMASK,
ARMV7M_CONTROL,
};
#define ARMV7M_COMMON_MAGIC 0x2A452A45
struct armv7m_common
{
int common_magic;
struct reg_cache *core_cache;
enum armv7m_mode core_mode;
int exception_number;
struct swjdp_common swjdp_info;
/* Direct processor core register read and writes */
int (*load_core_reg_u32)(struct target *target, enum armv7m_regtype type, uint32_t num, uint32_t *value);
int (*store_core_reg_u32)(struct target *target, enum armv7m_regtype type, uint32_t num, uint32_t value);
/* register cache to processor synchronization */
int (*read_core_reg)(struct target *target, unsigned num);
int (*write_core_reg)(struct target *target, unsigned num);
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 armv7m_common *
target_to_armv7m(struct target *target)
{
return target->arch_info;
}
struct armv7m_algorithm
{
int common_magic;
enum armv7m_mode core_mode;
};
struct armv7m_core_reg
{
uint32_t num;
enum armv7m_regtype type;
struct target *target;
struct armv7m_common *armv7m_common;
};
struct reg_cache *armv7m_build_reg_cache(struct target *target);
enum armv7m_mode armv7m_number_to_mode(int number);
int armv7m_mode_to_number(enum armv7m_mode mode);
int armv7m_arch_state(struct target *target);
int armv7m_get_gdb_reg_list(struct target *target,
struct reg **reg_list[], int *reg_list_size);
int armv7m_init_arch_info(struct target *target, struct armv7m_common *armv7m);
int armv7m_run_algorithm(struct target *target,
int num_mem_params, struct mem_param *mem_params,
int num_reg_params, struct reg_param *reg_params,
uint32_t entry_point, uint32_t exit_point,
int timeout_ms, void *arch_info);
int armv7m_invalidate_core_regs(struct target *target);
int armv7m_restore_context(struct target *target);
int armv7m_checksum_memory(struct target *target,
uint32_t address, uint32_t count, uint32_t* checksum);
int armv7m_blank_check_memory(struct target *target,
uint32_t address, uint32_t count, uint32_t* blank);
extern const struct command_registration armv7m_command_handlers[];
/* Thumb mode instructions
*/
/* Move to Register from Special Register (Thumb mode) 32 bit Thumb2 instruction
* Rd: destination register
* SYSm: source special register
*/
#define ARMV7M_T_MRS(Rd, SYSm) ((0xF3EF) | ((0x8000 | (Rd << 8) | SYSm) << 16))
/* Move from Register from Special Register (Thumb mode) 32 bit Thumb2 instruction
* Rd: source register
* SYSm: destination special register
*/
#define ARMV7M_T_MSR(SYSm, Rn) ((0xF380 | (Rn << 8)) | ((0x8800 | SYSm) << 16))
/* Change Processor State. The instruction modifies the PRIMASK and FAULTMASK
* special-purpose register values (Thumb mode) 16 bit Thumb2 instruction
* Rd: source register
* IF:
*/
#define I_FLAG 2
#define F_FLAG 1
#define ARMV7M_T_CPSID(IF) ((0xB660 | (1 << 8) | (IF&0x3)) | ((0xB660 | (1 << 8) | (IF&0x3)) << 16))
#define ARMV7M_T_CPSIE(IF) ((0xB660 | (0 << 8) | (IF&0x3)) | ((0xB660 | (0 << 8) | (IF&0x3)) << 16))
/* Breakpoint (Thumb mode) v5 onwards
* Im: immediate value used by debugger
*/
#define ARMV7M_T_BKPT(Im) ((0xBE00 | Im) | ((0xBE00 | Im) << 16))
/* Store register (Thumb mode)
* Rd: source register
* Rn: base register
*/
#define ARMV7M_T_STR(Rd, Rn) ((0x6000 | Rd | (Rn << 3)) | ((0x6000 | Rd | (Rn << 3)) << 16))
/* Load register (Thumb state)
* Rd: destination register
* Rn: base register
*/
#define ARMV7M_T_LDR(Rd, Rn) ((0x6800 | (Rn << 3) | Rd) | ((0x6800 | (Rn << 3) | Rd) << 16))
/* Load multiple (Thumb state)
* Rn: base register
* List: for each bit in list: store register
*/
#define ARMV7M_T_LDMIA(Rn, List) ((0xc800 | (Rn << 8) | List) | ((0xc800 | (Rn << 8) | List) << 16))
/* Load register with PC relative addressing
* Rd: register to load
*/
#define ARMV7M_T_LDR_PCREL(Rd) ((0x4800 | (Rd << 8)) | ((0x4800 | (Rd << 8)) << 16))
/* Move hi register (Thumb mode)
* Rd: destination register
* Rm: source register
*/
#define ARMV7M_T_MOV(Rd, Rm) ((0x4600 | (Rd & 0x7) | ((Rd & 0x8) << 4) | ((Rm & 0x7) << 3) | ((Rm & 0x8) << 3)) | ((0x4600 | (Rd & 0x7) | ((Rd & 0x8) << 4) | ((Rm & 0x7) << 3) | ((Rm & 0x8) << 3)) << 16))
/* No operation (Thumb mode)
*/
#define ARMV7M_T_NOP (0x46c0 | (0x46c0 << 16))
/* Move immediate to register (Thumb state)
* Rd: destination register
* Im: 8-bit immediate value
*/
#define ARMV7M_T_MOV_IM(Rd, Im) ((0x2000 | (Rd << 8) | Im) | ((0x2000 | (Rd << 8) | Im) << 16))
/* Branch and Exchange
* Rm: register containing branch target
*/
#define ARMV7M_T_BX(Rm) ((0x4700 | (Rm << 3)) | ((0x4700 | (Rm << 3)) << 16))
/* Branch (Thumb state)
* Imm: Branch target
*/
#define ARMV7M_T_B(Imm) ((0xe000 | Imm) | ((0xe000 | Imm) << 16))
#endif /* ARMV7M_H */
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