src/target/armv4_5.h

   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifndef ARMV4_5_H
  21 #define ARMV4_5_H
  22
  23 #include "register.h"
  24 #include "target.h"
  25
  26 enum armv4_5_mode
  27 {
  28         ARMV4_5_MODE_USR = 16,
  29         ARMV4_5_MODE_FIQ = 17,
  30         ARMV4_5_MODE_IRQ = 18,
  31         ARMV4_5_MODE_SVC = 19,
  32         ARMV4_5_MODE_ABT = 23,
  33         ARMV4_5_MODE_UND = 27,
  34         ARMV4_5_MODE_SYS = 31,
  35         ARMV4_5_MODE_ANY = -1
  36 };
  37
  38 extern char* armv4_5_mode_strings[];
  39
  40 enum armv4_5_state
  41 {
  42         ARMV4_5_STATE_ARM,
  43         ARMV4_5_STATE_THUMB,
  44         ARMV4_5_STATE_JAZELLE,
  45 };
  46
  47 extern char* armv4_5_state_strings[];
  48
  49 extern int armv4_5_core_reg_map[7][17];
  50
  51 #define ARMV4_5_CORE_REG_MODE(cache, mode, num) \
  52                 cache->reg_list[armv4_5_core_reg_map[armv4_5_mode_to_number(mode)][num]]
  53 #define ARMV4_5_CORE_REG_MODENUM(cache, mode, num) \
  54                 cache->reg_list[armv4_5_core_reg_map[mode][num]]
  55
  56 /* offsets into armv4_5 core register cache */
  57 enum
  58 {
  59         ARMV4_5_CPSR = 31,
  60         ARMV4_5_SPSR_FIQ = 32,
  61         ARMV4_5_SPSR_IRQ = 33,
  62         ARMV4_5_SPSR_SVC = 34,
  63         ARMV4_5_SPSR_ABT = 35,
  64         ARMV4_5_SPSR_UND = 36
  65 };
  66
  67 #define ARMV4_5_COMMON_MAGIC 0x0A450A45
  68
  69 typedef struct armv4_5_common_s
  70 {
  71         int common_magic;
  72         reg_cache_t *core_cache;
  73         enum armv4_5_mode core_mode;
  74         enum armv4_5_state core_state;
  75         int (*full_context)(struct target_s *target);
  76         int (*read_core_reg)(struct target_s *target, int num, enum armv4_5_mode mode);
  77         int (*write_core_reg)(struct target_s *target, int num, enum armv4_5_mode mode, u32 value);
  78         void *arch_info;
  79 } armv4_5_common_t;
  80
  81 typedef struct armv4_5_algorithm_s
  82 {
  83         int common_magic;
  84
  85         enum armv4_5_mode core_mode;
  86         enum armv4_5_state core_state;
  87 } armv4_5_algorithm_t;
  88
  89 typedef struct armv4_5_core_reg_s
  90 {
  91         int num;
  92         enum armv4_5_mode mode;
  93         target_t *target;
  94         armv4_5_common_t *armv4_5_common;
  95 } armv4_5_core_reg_t;
  96
  97 extern reg_cache_t* armv4_5_build_reg_cache(target_t *target, armv4_5_common_t *armv4_5_common);
  98 extern enum armv4_5_mode armv4_5_number_to_mode(int number);
  99 extern int armv4_5_mode_to_number(enum armv4_5_mode mode);
 100
 101 extern int armv4_5_arch_state(struct target_s *target, char *buf, int buf_size);
 102 extern int armv4_5_get_gdb_reg_list(target_t *target, reg_t **reg_list[], int *reg_list_size);
 103 extern int armv4_5_invalidate_core_regs(target_t *target);
 104
 105 extern int armv4_5_register_commands(struct command_context_s *cmd_ctx);
 106 extern int armv4_5_init_arch_info(target_t *target, armv4_5_common_t *armv4_5);
 107
 108 extern int armv4_5_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);
 109
 110 extern int armv4_5_invalidate_core_regs(target_t *target);
 111
 112 /* ARM mode instructions
 113  */
 114
 115 /* Store multiple increment after
 116  * Rn: base register
 117  * List: for each bit in list: store register
 118  * S: in priviledged mode: store user-mode registers
 119  * W=1: update the base register. W=0: leave the base register untouched
 120  */
 121 #define ARMV4_5_STMIA(Rn, List, S, W)   (0xe8800000 | (S << 22) | (W << 21) | (Rn << 16) | (List))
 122
 123 /* Load multiple increment after
 124  * Rn: base register
 125  * List: for each bit in list: store register
 126  * S: in priviledged mode: store user-mode registers
 127  * W=1: update the base register. W=0: leave the base register untouched
 128  */
 129 #define ARMV4_5_LDMIA(Rn, List, S, W)   (0xe8900000 | (S << 22) | (W << 21) | (Rn << 16) | (List))
 130
 131 /* MOV r8, r8 */
 132 #define ARMV4_5_NOP                                     (0xe1a08008)
 133
 134 /* Move PSR to general purpose register
 135  * R=1: SPSR R=0: CPSR
 136  * Rn: target register
 137  */
 138 #define ARMV4_5_MRS(Rn, R)                      (0xe10f0000 | (R << 22) | (Rn << 12))
 139
 140 /* Store register
 141  * Rd: register to store
 142  * Rn: base register
 143  */
 144 #define ARMV4_5_STR(Rd, Rn)                     (0xe5800000 | (Rd << 12) | (Rn << 16))
 145
 146 /* Load register
 147  * Rd: register to load
 148  * Rn: base register
 149  */
 150 #define ARMV4_5_LDR(Rd, Rn)                     (0xe5900000 | (Rd << 12) | (Rn << 16))
 151
 152 /* Move general purpose register to PSR
 153  * R=1: SPSR R=0: CPSR
 154  * Field: Field mask
 155  * 1: control field 2: extension field 4: status field 8: flags field
 156  * Rm: source register
 157  */
 158 #define ARMV4_5_MSR_GP(Rm, Field, R)    (0xe120f000 | Rm | (Field << 16) | (R << 22))
 159 #define ARMV4_5_MSR_IM(Im, Rotate, Field, R)    (0xe320f000 | (Im)  | (Rotate << 8) | (Field << 16) | (R << 22))
 160
 161 /* Load Register Halfword Immediate Post-Index
 162  * Rd: register to load
 163  * Rn: base register
 164  */
 165 #define ARMV4_5_LDRH_IP(Rd, Rn) (0xe0d000b2 | (Rd << 12) | (Rn << 16))
 166
 167 /* Load Register Byte Immediate Post-Index
 168  * Rd: register to load
 169  * Rn: base register
 170  */
 171 #define ARMV4_5_LDRB_IP(Rd, Rn) (0xe4d00001 | (Rd << 12) | (Rn << 16))
 172
 173 /* Store register Halfword Immediate Post-Index
 174  * Rd: register to store
 175  * Rn: base register
 176  */
 177 #define ARMV4_5_STRH_IP(Rd, Rn) (0xe0c000b2 | (Rd << 12) | (Rn << 16))
 178
 179 /* Store register Byte Immediate Post-Index
 180  * Rd: register to store
 181  * Rn: base register
 182  */
 183 #define ARMV4_5_STRB_IP(Rd, Rn) (0xe4c00001 | (Rd << 12) | (Rn << 16))
 184
 185 /* Branch (and Link)
 186  * Im: Branch target (left-shifted by 2 bits, added to PC)
 187  * L: 1: branch and link 0: branch only
 188  */
 189 #define ARMV4_5_B(Im, L) (0xea000000 | Im | (L << 24))
 190
 191 /* Branch and exchange (ARM state)
 192  * Rm: register holding branch target address
 193  */
 194 #define ARMV4_5_BX(Rm) (0xe12fff10 | Rm)
 195
 196 /* Thumb mode instructions
 197  */
 198
 199 /* Store register (Thumb mode)
 200  * Rd: source register
 201  * Rn: base register
 202  */
 203 #define ARMV4_5_T_STR(Rd, Rn)   ((0x6000 | Rd | (Rn << 3)) | ((0x6000 | Rd | (Rn << 3)) << 16))
 204
 205 /* Load register (Thumb state)
 206  * Rd: destination register
 207  * Rn: base register
 208  */
 209 #define ARMV4_5_T_LDR(Rd, Rn)   ((0x6800 | (Rn << 3) | Rd) | ((0x6800 | (Rn << 3) | Rd) << 16))
 210
 211 /* Move hi register (Thumb mode)
 212  * Rd: destination register
 213  * Rm: source register
 214  */
 215 #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))
 216
 217 /* No operation (Thumb mode)
 218  */
 219 #define ARMV4_5_T_NOP   (0x1c3f | (0x1c3f << 16))
 220
 221 /* Move immediate to register (Thumb state)
 222  * Rd: destination register
 223  * Im: 8-bit immediate value
 224  */
 225 #define ARMV4_5_T_MOV_IM(Rd, Im)        ((0x2000 | (Rd << 8) | Im) | ((0x2000 | (Rd << 8) | Im) << 16))
 226
 227 /* Branch and Exchange
 228  * Rm: register containing branch target
 229  */
 230 #define ARMV4_5_T_BX(Rm)                ((0x4700 | (Rm << 3)) | ((0x4700 | (Rm << 3)) << 16))
 231
 232 /* Branch (Thumb state)
 233  * Imm: Branch target
 234  */
 235 #define ARMV4_5_T_B(Imm)        ((0xe000 | Imm) | ((0xe000 | Imm) << 16))
 236
 237 #endif /* ARMV4_5_H */