1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2008 by Spencer Oliver *
6 * spen@spen-soft.co.uk *
8 * Copyright (C) 2009 by Øyvind Harboe *
9 * oyvind.harboe@zylin.com *
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 ***************************************************************************/
33 typedef enum armv4_5_mode
35 ARMV4_5_MODE_USR = 16,
36 ARMV4_5_MODE_FIQ = 17,
37 ARMV4_5_MODE_IRQ = 18,
38 ARMV4_5_MODE_SVC = 19,
39 ARMV4_5_MODE_ABT = 23,
40 ARMV4_5_MODE_UND = 27,
41 ARMV4_5_MODE_SYS = 31,
45 extern char** armv4_5_mode_strings;
47 typedef enum armv4_5_state
51 ARMV4_5_STATE_JAZELLE,
54 extern char* armv4_5_state_strings[];
56 extern int armv4_5_core_reg_map[7][17];
58 #define ARMV4_5_CORE_REG_MODE(cache, mode, num) \
59 cache->reg_list[armv4_5_core_reg_map[armv4_5_mode_to_number(mode)][num]]
60 #define ARMV4_5_CORE_REG_MODENUM(cache, mode, num) \
61 cache->reg_list[armv4_5_core_reg_map[mode][num]]
63 /* offsets into armv4_5 core register cache */
67 ARMV4_5_SPSR_FIQ = 32,
68 ARMV4_5_SPSR_IRQ = 33,
69 ARMV4_5_SPSR_SVC = 34,
70 ARMV4_5_SPSR_ABT = 35,
74 #define ARMV4_5_COMMON_MAGIC 0x0A450A45
76 /* NOTE: this is being morphed into a generic toplevel holder for ARMs. */
77 #define armv4_5_common_s arm
80 * Represents a generic ARM core, with standard application registers.
82 * There are sixteen application registers (including PC, SP, LR) and a PSR.
83 * Cortex-M series cores do not support as many core states or shadowed
84 * registers as traditional ARM cores, and only support Thumb2 instructions.
89 reg_cache_t *core_cache;
91 int /* armv4_5_mode */ core_mode;
92 enum armv4_5_state core_state;
94 /** Flag reporting unavailability of the BKPT instruction. */
97 /** Handle for the Embedded Trace Module, if one is present. */
100 int (*full_context)(struct target_s *target);
101 int (*read_core_reg)(struct target_s *target,
102 int num, enum armv4_5_mode mode);
103 int (*write_core_reg)(struct target_s *target,
104 int num, enum armv4_5_mode mode, uint32_t value);
108 #define target_to_armv4_5 target_to_arm
110 /** Convert target handle to generic ARM target state handle. */
111 static inline struct arm *target_to_arm(struct target_s *target)
113 return target->arch_info;
116 static inline bool is_arm(struct arm *arm)
118 return arm && arm->common_magic == ARMV4_5_COMMON_MAGIC;
121 typedef struct armv4_5_algorithm_s
125 enum armv4_5_mode core_mode;
126 enum armv4_5_state core_state;
127 } armv4_5_algorithm_t;
129 typedef struct armv4_5_core_reg_s
132 enum armv4_5_mode mode;
134 armv4_5_common_t *armv4_5_common;
135 } armv4_5_core_reg_t;
137 reg_cache_t* armv4_5_build_reg_cache(target_t *target,
138 armv4_5_common_t *armv4_5_common);
140 /* map psr mode bits to linear number */
141 static __inline int armv4_5_mode_to_number(enum armv4_5_mode mode)
145 case ARMV4_5_MODE_USR: return 0; break;
146 case ARMV4_5_MODE_FIQ: return 1; break;
147 case ARMV4_5_MODE_IRQ: return 2; break;
148 case ARMV4_5_MODE_SVC: return 3; break;
149 case ARMV4_5_MODE_ABT: return 4; break;
150 case ARMV4_5_MODE_UND: return 5; break;
151 case ARMV4_5_MODE_SYS: return 6; break;
152 case ARMV4_5_MODE_ANY: return 0; break; /* map MODE_ANY to user mode */
154 LOG_ERROR("invalid mode value encountered %d", mode);
159 /* map linear number to mode bits */
160 static __inline enum armv4_5_mode armv4_5_number_to_mode(int number)
164 case 0: return ARMV4_5_MODE_USR; break;
165 case 1: return ARMV4_5_MODE_FIQ; break;
166 case 2: return ARMV4_5_MODE_IRQ; break;
167 case 3: return ARMV4_5_MODE_SVC; break;
168 case 4: return ARMV4_5_MODE_ABT; break;
169 case 5: return ARMV4_5_MODE_UND; break;
170 case 6: return ARMV4_5_MODE_SYS; break;
172 LOG_ERROR("mode index out of bounds %d", number);
173 return ARMV4_5_MODE_ANY;
177 int armv4_5_arch_state(struct target_s *target);
178 int armv4_5_get_gdb_reg_list(target_t *target,
179 reg_t **reg_list[], int *reg_list_size);
181 int armv4_5_register_commands(struct command_context_s *cmd_ctx);
182 int armv4_5_init_arch_info(target_t *target, armv4_5_common_t *armv4_5);
184 int armv4_5_run_algorithm(struct target_s *target,
185 int num_mem_params, mem_param_t *mem_params,
186 int num_reg_params, reg_param_t *reg_params,
187 uint32_t entry_point, uint32_t exit_point,
188 int timeout_ms, void *arch_info);
190 int armv4_5_invalidate_core_regs(target_t *target);
192 /* ARM mode instructions
195 /* Store multiple increment after
197 * List: for each bit in list: store register
198 * S: in priviledged mode: store user-mode registers
199 * W = 1: update the base register. W = 0: leave the base register untouched
201 #define ARMV4_5_STMIA(Rn, List, S, W) (0xe8800000 | ((S) << 22) | ((W) << 21) | ((Rn) << 16) | (List))
203 /* Load multiple increment after
205 * List: for each bit in list: store register
206 * S: in priviledged mode: store user-mode registers
207 * W = 1: update the base register. W = 0: leave the base register untouched
209 #define ARMV4_5_LDMIA(Rn, List, S, W) (0xe8900000 | ((S) << 22) | ((W) << 21) | ((Rn) << 16) | (List))
212 #define ARMV4_5_NOP (0xe1a08008)
214 /* Move PSR to general purpose register
215 * R = 1: SPSR R = 0: CPSR
216 * Rn: target register
218 #define ARMV4_5_MRS(Rn, R) (0xe10f0000 | ((R) << 22) | ((Rn) << 12))
221 * Rd: register to store
224 #define ARMV4_5_STR(Rd, Rn) (0xe5800000 | ((Rd) << 12) | ((Rn) << 16))
227 * Rd: register to load
230 #define ARMV4_5_LDR(Rd, Rn) (0xe5900000 | ((Rd) << 12) | ((Rn) << 16))
232 /* Move general purpose register to PSR
233 * R = 1: SPSR R = 0: CPSR
235 * 1: control field 2: extension field 4: status field 8: flags field
236 * Rm: source register
238 #define ARMV4_5_MSR_GP(Rm, Field, R) (0xe120f000 | (Rm) | ((Field) << 16) | ((R) << 22))
239 #define ARMV4_5_MSR_IM(Im, Rotate, Field, R) (0xe320f000 | (Im) | ((Rotate) << 8) | ((Field) << 16) | ((R) << 22))
241 /* Load Register Halfword Immediate Post-Index
242 * Rd: register to load
245 #define ARMV4_5_LDRH_IP(Rd, Rn) (0xe0d000b2 | ((Rd) << 12) | ((Rn) << 16))
247 /* Load Register Byte Immediate Post-Index
248 * Rd: register to load
251 #define ARMV4_5_LDRB_IP(Rd, Rn) (0xe4d00001 | ((Rd) << 12) | ((Rn) << 16))
253 /* Store register Halfword Immediate Post-Index
254 * Rd: register to store
257 #define ARMV4_5_STRH_IP(Rd, Rn) (0xe0c000b2 | ((Rd) << 12) | ((Rn) << 16))
259 /* Store register Byte Immediate Post-Index
260 * Rd: register to store
263 #define ARMV4_5_STRB_IP(Rd, Rn) (0xe4c00001 | ((Rd) << 12) | ((Rn) << 16))
266 * Im: Branch target (left-shifted by 2 bits, added to PC)
267 * L: 1: branch and link 0: branch only
269 #define ARMV4_5_B(Im, L) (0xea000000 | (Im) | ((L) << 24))
271 /* Branch and exchange (ARM state)
272 * Rm: register holding branch target address
274 #define ARMV4_5_BX(Rm) (0xe12fff10 | (Rm))
276 /* Move to ARM register from coprocessor
277 * CP: Coprocessor number
278 * op1: Coprocessor opcode
279 * Rd: destination register
280 * CRn: first coprocessor operand
281 * CRm: second coprocessor operand
282 * op2: Second coprocessor opcode
284 #define ARMV4_5_MRC(CP, op1, Rd, CRn, CRm, op2) (0xee100010 | (CRm) | ((op2) << 5) | ((CP) << 8) | ((Rd) << 12) | ((CRn) << 16) | ((op1) << 21))
286 /* Move to coprocessor from ARM register
287 * CP: Coprocessor number
288 * op1: Coprocessor opcode
289 * Rd: destination register
290 * CRn: first coprocessor operand
291 * CRm: second coprocessor operand
292 * op2: Second coprocessor opcode
294 #define ARMV4_5_MCR(CP, op1, Rd, CRn, CRm, op2) (0xee000010 | (CRm) | ((op2) << 5) | ((CP) << 8) | ((Rd) << 12) | ((CRn) << 16) | ((op1) << 21))
296 /* Breakpoint instruction (ARMv5)
297 * Im: 16-bit immediate
299 #define ARMV5_BKPT(Im) (0xe1200070 | ((Im & 0xfff0) << 8) | (Im & 0xf))
302 /* Thumb mode instructions
305 /* Store register (Thumb mode)
306 * Rd: source register
309 #define ARMV4_5_T_STR(Rd, Rn) ((0x6000 | (Rd) | ((Rn) << 3)) | ((0x6000 | (Rd) | ((Rn) << 3)) << 16))
311 /* Load register (Thumb state)
312 * Rd: destination register
315 #define ARMV4_5_T_LDR(Rd, Rn) ((0x6800 | ((Rn) << 3) | (Rd)) | ((0x6800 | ((Rn) << 3) | (Rd)) << 16))
317 /* Load multiple (Thumb state)
319 * List: for each bit in list: store register
321 #define ARMV4_5_T_LDMIA(Rn, List) ((0xc800 | ((Rn) << 8) | (List)) | ((0xc800 | ((Rn) << 8) | List) << 16))
323 /* Load register with PC relative addressing
324 * Rd: register to load
326 #define ARMV4_5_T_LDR_PCREL(Rd) ((0x4800 | ((Rd) << 8)) | ((0x4800 | ((Rd) << 8)) << 16))
328 /* Move hi register (Thumb mode)
329 * Rd: destination register
330 * Rm: source register
332 #define ARMV4_5_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))
334 /* No operation (Thumb mode)
336 #define ARMV4_5_T_NOP (0x46c0 | (0x46c0 << 16))
338 /* Move immediate to register (Thumb state)
339 * Rd: destination register
340 * Im: 8-bit immediate value
342 #define ARMV4_5_T_MOV_IM(Rd, Im) ((0x2000 | ((Rd) << 8) | (Im)) | ((0x2000 | ((Rd) << 8) | (Im)) << 16))
344 /* Branch and Exchange
345 * Rm: register containing branch target
347 #define ARMV4_5_T_BX(Rm) ((0x4700 | ((Rm) << 3)) | ((0x4700 | ((Rm) << 3)) << 16))
349 /* Branch (Thumb state)
352 #define ARMV4_5_T_B(Imm) ((0xe000 | (Imm)) | ((0xe000 | (Imm)) << 16))
354 /* Breakpoint instruction (ARMv5) (Thumb state)
355 * Im: 8-bit immediate
357 #define ARMV5_T_BKPT(Im) ((0xbe00 | Im) | ((0xbe00 | Im) << 16))
359 /* build basic mrc/mcr opcode */
361 static inline uint32_t mrc_opcode(int cpnum, uint32_t op1, uint32_t op2, uint32_t CRn, uint32_t CRm)
374 #endif /* ARMV4_5_H */