1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2006 by Magnus Lundin *
8 * Copyright (C) 2008 by Spencer Oliver *
9 * spen@spen-soft.co.uk *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
16 * This program is distributed in the hope that it will be useful, *
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
19 * GNU General Public License for more details. *
21 * You should have received a copy of the GNU General Public License *
22 * along with this program; if not, write to the *
23 * Free Software Foundation, Inc., *
24 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
25 ***************************************************************************/
26 #ifndef ARMV7M_COMMON_H
27 #define ARMV7M_COMMON_H
33 /* define for enabling armv7 gdb workarounds */
35 #define ARMV7_GDB_HACKS
40 ARMV7M_MODE_THREAD = 0,
41 ARMV7M_MODE_USER_THREAD = 1,
42 ARMV7M_MODE_HANDLER = 2,
46 extern char* armv7m_mode_strings[];
50 ARMV7M_REGISTER_CORE_GP,
51 ARMV7M_REGISTER_CORE_SP,
52 ARMV7M_REGISTER_MEMMAP
55 extern char* armv7m_exception_strings[];
57 extern char *armv7m_exception_string(int number);
59 /* offsets into armv7m core register cache */
73 #define ARMV7M_COMMON_MAGIC 0x2A452A45
75 typedef struct armv7m_common_s
78 reg_cache_t *core_cache;
79 enum armv7m_mode core_mode;
82 /* Direct processor core register read and writes */
83 int (*load_core_reg_u32)(struct target_s *target, enum armv7m_regtype type, u32 num, u32 *value);
84 int (*store_core_reg_u32)(struct target_s *target, enum armv7m_regtype type, u32 num, u32 value);
85 /* register cache to processor synchronization */
86 int (*read_core_reg)(struct target_s *target, int num);
87 int (*write_core_reg)(struct target_s *target, int num);
89 int (*examine_debug_reason)(target_t *target);
90 void (*pre_debug_entry)(target_t *target);
91 void (*post_debug_entry)(target_t *target);
93 void (*pre_restore_context)(target_t *target);
94 void (*post_restore_context)(target_t *target);
99 typedef struct armv7m_algorithm_s
103 enum armv7m_mode core_mode;
104 } armv7m_algorithm_t;
106 typedef struct armv7m_core_reg_s
109 enum armv7m_regtype type;
110 enum armv7m_mode mode;
112 armv7m_common_t *armv7m_common;
115 extern reg_cache_t *armv7m_build_reg_cache(target_t *target);
116 extern enum armv7m_mode armv7m_number_to_mode(int number);
117 extern int armv7m_mode_to_number(enum armv7m_mode mode);
119 extern int armv7m_arch_state(struct target_s *target);
120 extern int armv7m_get_gdb_reg_list(target_t *target, reg_t **reg_list[], int *reg_list_size);
121 extern int armv7m_invalidate_core_regs(target_t *target);
123 extern int armv7m_register_commands(struct command_context_s *cmd_ctx);
124 extern int armv7m_init_arch_info(target_t *target, armv7m_common_t *armv7m);
126 extern int armv7m_run_algorithm(struct target_s *target, int num_mem_params, mem_param_t *mem_params, int num_reg_params, reg_param_t *reg_params, u32 entry_point, u32 exit_point, int timeout_ms, void *arch_info);
128 extern int armv7m_invalidate_core_regs(target_t *target);
130 extern int armv7m_restore_context(target_t *target);
132 extern int armv7m_checksum_memory(struct target_s *target, u32 address, u32 count, u32* checksum);
133 extern int armv7m_blank_check_memory(struct target_s *target, u32 address, u32 count, u32* blank);
135 /* Thumb mode instructions
138 /* Move to Register from Special Register (Thumb mode) 32 bit Thumb2 instruction
139 * Rd: destination register
140 * SYSm: source special register
142 #define ARMV7M_T_MRS(Rd, SYSm) ((0xF3EF) | ((0x8000 | (Rd<<8) | SYSm) << 16))
144 /* Move from Register from Special Register (Thumb mode) 32 bit Thumb2 instruction
145 * Rd: source register
146 * SYSm: destination special register
148 #define ARMV7M_T_MSR(SYSm, Rn) ((0xF380 | ( Rn<<8 )) | ((0x8800 | SYSm) << 16))
150 /* Change Processor State. The instruction modifies the PRIMASK and FAULTMASK
151 * special-purpose register values (Thumb mode) 16 bit Thumb2 instruction
152 * Rd: source register
157 #define ARMV7M_T_CPSID(IF) ((0xB660 | (1<<8) | (IF&0x3)) | ((0xB660 | (1<<8) | (IF&0x3)) << 16))
158 #define ARMV7M_T_CPSIE(IF) ((0xB660 | (0<<8) | (IF&0x3)) | ((0xB660 | (0<<8) | (IF&0x3)) << 16))
160 /* Breakpoint (Thumb mode) v5 onwards
161 * Im: immediate value used by debugger
163 #define ARMV7M_T_BKPT(Im) ((0xBE00 | Im ) | ((0xBE00 | Im ) << 16))
165 /* Store register (Thumb mode)
166 * Rd: source register
169 #define ARMV7M_T_STR(Rd, Rn) ((0x6000 | Rd | (Rn << 3)) | ((0x6000 | Rd | (Rn << 3)) << 16))
171 /* Load register (Thumb state)
172 * Rd: destination register
175 #define ARMV7M_T_LDR(Rd, Rn) ((0x6800 | (Rn << 3) | Rd) | ((0x6800 | (Rn << 3) | Rd) << 16))
177 /* Load multiple (Thumb state)
179 * List: for each bit in list: store register
181 #define ARMV7M_T_LDMIA(Rn, List) ((0xc800 | (Rn << 8) | List) | ((0xc800 | (Rn << 8) | List) << 16))
183 /* Load register with PC relative addressing
184 * Rd: register to load
186 #define ARMV7M_T_LDR_PCREL(Rd) ((0x4800 | (Rd << 8)) | ((0x4800 | (Rd << 8)) << 16))
188 /* Move hi register (Thumb mode)
189 * Rd: destination register
190 * Rm: source register
192 #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))
194 /* No operation (Thumb mode)
196 #define ARMV7M_T_NOP (0x46c0 | (0x46c0 << 16))
198 /* Move immediate to register (Thumb state)
199 * Rd: destination register
200 * Im: 8-bit immediate value
202 #define ARMV7M_T_MOV_IM(Rd, Im) ((0x2000 | (Rd << 8) | Im) | ((0x2000 | (Rd << 8) | Im) << 16))
204 /* Branch and Exchange
205 * Rm: register containing branch target
207 #define ARMV7M_T_BX(Rm) ((0x4700 | (Rm << 3)) | ((0x4700 | (Rm << 3)) << 16))
209 /* Branch (Thumb state)
212 #define ARMV7M_T_B(Imm) ((0xe000 | Imm) | ((0xe000 | Imm) << 16))
214 #endif /* ARMV7M_H */