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   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   Copyright (C) 2008 by Spencer Oliver                                  *
   6  *   spen@spen-soft.co.uk                                                  *
   7  *                                                                         *
   8  *   Copyright (C) 2008 by Oyvind Harboe                                   *
   9  *   oyvind.harboe@zylin.com                                               *
  10  *                                                                         *
  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.                                   *
  15  *                                                                         *
  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.                          *
  20  *                                                                         *
  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 #ifdef HAVE_CONFIG_H
  27 #include "config.h"
  28 #endif
  29
  30 #include "replacements.h"
  31
  32 #include "arm_disassembler.h"
  33
  34 #include "armv4_5.h"
  35
  36 #include "target.h"
  37 #include "register.h"
  38 #include "log.h"
  39 #include "binarybuffer.h"
  40 #include "command.h"
  41
  42 #include <stdlib.h>
  43 #include <string.h>
  44 #include <unistd.h>
  45
  46 bitfield_desc_t armv4_5_psr_bitfield_desc[] =
  47 {
  48         {"M[4:0]", 5},
  49         {"T", 1},
  50         {"F", 1},
  51         {"I", 1},
  52         {"reserved", 16},
  53         {"J", 1},
  54         {"reserved", 2},
  55         {"Q", 1},
  56         {"V", 1},
  57         {"C", 1},
  58         {"Z", 1},
  59         {"N", 1},
  60 };
  61
  62 char* armv4_5_core_reg_list[] =
  63 {
  64         "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "r13_usr", "lr_usr", "pc",
  65
  66         "r8_fiq", "r9_fiq", "r10_fiq", "r11_fiq", "r12_fiq", "r13_fiq", "lr_fiq",
  67
  68         "r13_irq", "lr_irq",
  69
  70         "r13_svc", "lr_svc",
  71
  72         "r13_abt", "lr_abt",
  73
  74         "r13_und", "lr_und",
  75
  76         "cpsr", "spsr_fiq", "spsr_irq", "spsr_svc", "spsr_abt", "spsr_und"
  77 };
  78
  79 char * armv4_5_mode_strings_list[] =
  80 {
  81         "Illegal mode value", "User", "FIQ", "IRQ", "Supervisor", "Abort", "Undefined", "System"
  82 };
  83
  84 /* Hack! Yuk! allow -1 index, which simplifies codepaths elsewhere in the code */
  85 char** armv4_5_mode_strings = armv4_5_mode_strings_list+1;
  86
  87 char* armv4_5_state_strings[] =
  88 {
  89         "ARM", "Thumb", "Jazelle"
  90 };
  91
  92 int armv4_5_core_reg_arch_type = -1;
  93
  94 armv4_5_core_reg_t armv4_5_core_reg_list_arch_info[] =
  95 {
  96         {0, ARMV4_5_MODE_ANY, NULL, NULL},
  97         {1, ARMV4_5_MODE_ANY, NULL, NULL},
  98         {2, ARMV4_5_MODE_ANY, NULL, NULL},
  99         {3, ARMV4_5_MODE_ANY, NULL, NULL},
 100         {4, ARMV4_5_MODE_ANY, NULL, NULL},
 101         {5, ARMV4_5_MODE_ANY, NULL, NULL},
 102         {6, ARMV4_5_MODE_ANY, NULL, NULL},
 103         {7, ARMV4_5_MODE_ANY, NULL, NULL},
 104         {8, ARMV4_5_MODE_ANY, NULL, NULL},
 105         {9, ARMV4_5_MODE_ANY, NULL, NULL},
 106         {10, ARMV4_5_MODE_ANY, NULL, NULL},
 107         {11, ARMV4_5_MODE_ANY, NULL, NULL},
 108         {12, ARMV4_5_MODE_ANY, NULL, NULL},
 109         {13, ARMV4_5_MODE_USR, NULL, NULL},
 110         {14, ARMV4_5_MODE_USR, NULL, NULL},
 111         {15, ARMV4_5_MODE_ANY, NULL, NULL},
 112
 113         {8, ARMV4_5_MODE_FIQ, NULL, NULL},
 114         {9, ARMV4_5_MODE_FIQ, NULL, NULL},
 115         {10, ARMV4_5_MODE_FIQ, NULL, NULL},
 116         {11, ARMV4_5_MODE_FIQ, NULL, NULL},
 117         {12, ARMV4_5_MODE_FIQ, NULL, NULL},
 118         {13, ARMV4_5_MODE_FIQ, NULL, NULL},
 119         {14, ARMV4_5_MODE_FIQ, NULL, NULL},
 120
 121         {13, ARMV4_5_MODE_IRQ, NULL, NULL},
 122         {14, ARMV4_5_MODE_IRQ, NULL, NULL},
 123
 124         {13, ARMV4_5_MODE_SVC, NULL, NULL},
 125         {14, ARMV4_5_MODE_SVC, NULL, NULL},
 126
 127         {13, ARMV4_5_MODE_ABT, NULL, NULL},
 128         {14, ARMV4_5_MODE_ABT, NULL, NULL},
 129
 130         {13, ARMV4_5_MODE_UND, NULL, NULL},
 131         {14, ARMV4_5_MODE_UND, NULL, NULL},
 132
 133         {16, ARMV4_5_MODE_ANY, NULL, NULL},
 134         {16, ARMV4_5_MODE_FIQ, NULL, NULL},
 135         {16, ARMV4_5_MODE_IRQ, NULL, NULL},
 136         {16, ARMV4_5_MODE_SVC, NULL, NULL},
 137         {16, ARMV4_5_MODE_ABT, NULL, NULL},
 138         {16, ARMV4_5_MODE_UND, NULL, NULL}
 139 };
 140
 141 /* map core mode (USR, FIQ, ...) and register number to indizes into the register cache */
 142 int armv4_5_core_reg_map[7][17] =
 143 {
 144         {       /* USR */
 145                 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 31
 146         },
 147         {       /* FIQ */
 148                 0, 1, 2, 3, 4, 5, 6, 7, 16, 17, 18, 19, 20, 21, 22, 15, 32
 149         },
 150         {       /* IRQ */
 151                 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 23, 24, 15, 33
 152         },
 153         {       /* SVC */
 154                 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 25, 26, 15, 34
 155         },
 156         {       /* ABT */
 157                 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 27, 28, 15, 35
 158         },
 159         {       /* UND */
 160                 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 29, 30, 15, 36
 161         },
 162         {       /* SYS */
 163                 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 31
 164         }
 165 };
 166
 167 u8 armv4_5_gdb_dummy_fp_value[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
 168
 169 reg_t armv4_5_gdb_dummy_fp_reg =
 170 {
 171         "GDB dummy floating-point register", armv4_5_gdb_dummy_fp_value, 0, 1, 96, NULL, 0, NULL, 0
 172 };
 173
 174 u8 armv4_5_gdb_dummy_fps_value[] = {0, 0, 0, 0};
 175
 176 reg_t armv4_5_gdb_dummy_fps_reg =
 177 {
 178         "GDB dummy floating-point status register", armv4_5_gdb_dummy_fps_value, 0, 1, 32, NULL, 0, NULL, 0
 179 };
 180
 181
 182 int armv4_5_get_core_reg(reg_t *reg)
 183 {
 184         int retval;
 185         armv4_5_core_reg_t *armv4_5 = reg->arch_info;
 186         target_t *target = armv4_5->target;
 187
 188         if (target->state != TARGET_HALTED)
 189         {
 190                 LOG_ERROR("Target not halted");
 191                 return ERROR_TARGET_NOT_HALTED;
 192         }
 193
 194         /* retval = armv4_5->armv4_5_common->full_context(target); */
 195         retval = armv4_5->armv4_5_common->read_core_reg(target, armv4_5->num, armv4_5->mode);
 196
 197         return retval;
 198 }
 199
 200 int armv4_5_set_core_reg(reg_t *reg, u8 *buf)
 201 {
 202         armv4_5_core_reg_t *armv4_5 = reg->arch_info;
 203         target_t *target = armv4_5->target;
 204         armv4_5_common_t *armv4_5_target = target->arch_info;
 205         u32 value = buf_get_u32(buf, 0, 32);
 206
 207         if (target->state != TARGET_HALTED)
 208         {
 209                 return ERROR_TARGET_NOT_HALTED;
 210         }
 211
 212         if (reg == &armv4_5_target->core_cache->reg_list[ARMV4_5_CPSR])
 213         {
 214                 if (value & 0x20)
 215                 {
 216                         /* T bit should be set */
 217                         if (armv4_5_target->core_state == ARMV4_5_STATE_ARM)
 218                         {
 219                                 /* change state to Thumb */
 220                                 LOG_DEBUG("changing to Thumb state");
 221                                 armv4_5_target->core_state = ARMV4_5_STATE_THUMB;
 222                         }
 223                 }
 224                 else
 225                 {
 226                         /* T bit should be cleared */
 227                         if (armv4_5_target->core_state == ARMV4_5_STATE_THUMB)
 228                         {
 229                                 /* change state to ARM */
 230                                 LOG_DEBUG("changing to ARM state");
 231                                 armv4_5_target->core_state = ARMV4_5_STATE_ARM;
 232                         }
 233                 }
 234
 235                 if (armv4_5_target->core_mode != (value & 0x1f))
 236                 {
 237                         LOG_DEBUG("changing ARM core mode to '%s'", armv4_5_mode_strings[armv4_5_mode_to_number(value & 0x1f)]);
 238                         armv4_5_target->core_mode = value & 0x1f;
 239                         armv4_5_target->write_core_reg(target, 16, ARMV4_5_MODE_ANY, value);
 240                 }
 241         }
 242
 243         buf_set_u32(reg->value, 0, 32, value);
 244         reg->dirty = 1;
 245         reg->valid = 1;
 246
 247         return ERROR_OK;
 248 }
 249
 250 int armv4_5_invalidate_core_regs(target_t *target)
 251 {
 252         armv4_5_common_t *armv4_5 = target->arch_info;
 253         int i;
 254
 255         for (i = 0; i < 37; i++)
 256         {
 257                 armv4_5->core_cache->reg_list[i].valid = 0;
 258                 armv4_5->core_cache->reg_list[i].dirty = 0;
 259         }
 260
 261         return ERROR_OK;
 262 }
 263
 264 reg_cache_t* armv4_5_build_reg_cache(target_t *target, armv4_5_common_t *armv4_5_common)
 265 {
 266         int num_regs = 37;
 267         reg_cache_t *cache = malloc(sizeof(reg_cache_t));
 268         reg_t *reg_list = malloc(sizeof(reg_t) * num_regs);
 269         armv4_5_core_reg_t *arch_info = malloc(sizeof(armv4_5_core_reg_t) * num_regs);
 270         int i;
 271
 272         cache->name = "arm v4/5 registers";
 273         cache->next = NULL;
 274         cache->reg_list = reg_list;
 275         cache->num_regs = num_regs;
 276
 277         if (armv4_5_core_reg_arch_type == -1)
 278                 armv4_5_core_reg_arch_type = register_reg_arch_type(armv4_5_get_core_reg, armv4_5_set_core_reg);
 279
 280         for (i = 0; i < 37; i++)
 281         {
 282                 arch_info[i] = armv4_5_core_reg_list_arch_info[i];
 283                 arch_info[i].target = target;
 284                 arch_info[i].armv4_5_common = armv4_5_common;
 285                 reg_list[i].name = armv4_5_core_reg_list[i];
 286                 reg_list[i].size = 32;
 287                 reg_list[i].value = calloc(1, 4);
 288                 reg_list[i].dirty = 0;
 289                 reg_list[i].valid = 0;
 290                 reg_list[i].bitfield_desc = NULL;
 291                 reg_list[i].num_bitfields = 0;
 292                 reg_list[i].arch_type = armv4_5_core_reg_arch_type;
 293                 reg_list[i].arch_info = &arch_info[i];
 294         }
 295
 296         return cache;
 297 }
 298
 299 int armv4_5_arch_state(struct target_s *target)
 300 {
 301         armv4_5_common_t *armv4_5 = target->arch_info;
 302
 303         if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
 304         {
 305                 LOG_ERROR("BUG: called for a non-ARMv4/5 target");
 306                 exit(-1);
 307         }
 308
 309         LOG_USER("target halted in %s state due to %s, current mode: %s\ncpsr: 0x%8.8x pc: 0x%8.8x",
 310                          armv4_5_state_strings[armv4_5->core_state],
 311                          Jim_Nvp_value2name_simple( nvp_target_debug_reason, target->debug_reason )->name,
 312                          armv4_5_mode_strings[armv4_5_mode_to_number(armv4_5->core_mode)],
 313                          buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 32),
 314                          buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32));
 315
 316         return ERROR_OK;
 317 }
 318
 319 int handle_armv4_5_reg_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 320 {
 321         char output[128];
 322         int output_len;
 323         int mode, num;
 324         target_t *target = get_current_target(cmd_ctx);
 325         armv4_5_common_t *armv4_5 = target->arch_info;
 326
 327         if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
 328         {
 329                 command_print(cmd_ctx, "current target isn't an ARMV4/5 target");
 330                 return ERROR_OK;
 331         }
 332
 333         if (target->state != TARGET_HALTED)
 334         {
 335                 command_print(cmd_ctx, "error: target must be halted for register accesses");
 336                 return ERROR_OK;
 337         }
 338
 339         if (armv4_5_mode_to_number(armv4_5->core_mode)==-1)
 340                 return ERROR_FAIL;
 341
 342         for (num = 0; num <= 15; num++)
 343         {
 344                 output_len = 0;
 345                 for (mode = 0; mode < 6; mode++)
 346                 {
 347                         if (!ARMV4_5_CORE_REG_MODENUM(armv4_5->core_cache, mode, num).valid)
 348                         {
 349                                 armv4_5->full_context(target);
 350                         }
 351                         output_len += snprintf(output + output_len, 128 - output_len, "%8s: %8.8x ", ARMV4_5_CORE_REG_MODENUM(armv4_5->core_cache, mode, num).name,
 352                                 buf_get_u32(ARMV4_5_CORE_REG_MODENUM(armv4_5->core_cache, mode, num).value, 0, 32));
 353                 }
 354                 command_print(cmd_ctx, output);
 355         }
 356         command_print(cmd_ctx, "    cpsr: %8.8x spsr_fiq: %8.8x spsr_irq: %8.8x spsr_svc: %8.8x spsr_abt: %8.8x spsr_und: %8.8x",
 357                           buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 32),
 358                           buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_SPSR_FIQ].value, 0, 32),
 359                           buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_SPSR_IRQ].value, 0, 32),
 360                           buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_SPSR_SVC].value, 0, 32),
 361                           buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_SPSR_ABT].value, 0, 32),
 362                           buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_SPSR_UND].value, 0, 32));
 363
 364         return ERROR_OK;
 365 }
 366
 367 int handle_armv4_5_core_state_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 368 {
 369         target_t *target = get_current_target(cmd_ctx);
 370         armv4_5_common_t *armv4_5 = target->arch_info;
 371
 372         if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
 373         {
 374                 command_print(cmd_ctx, "current target isn't an ARMV4/5 target");
 375                 return ERROR_OK;
 376         }
 377
 378         if (argc > 0)
 379         {
 380                 if (strcmp(args[0], "arm") == 0)
 381                 {
 382                         armv4_5->core_state = ARMV4_5_STATE_ARM;
 383                 }
 384                 if (strcmp(args[0], "thumb") == 0)
 385                 {
 386                         armv4_5->core_state = ARMV4_5_STATE_THUMB;
 387                 }
 388         }
 389
 390         command_print(cmd_ctx, "core state: %s", armv4_5_state_strings[armv4_5->core_state]);
 391
 392         return ERROR_OK;
 393 }
 394
 395 int handle_armv4_5_disassemble_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 396 {
 397         target_t *target = get_current_target(cmd_ctx);
 398         armv4_5_common_t *armv4_5 = target->arch_info;
 399         u32 address;
 400         int count;
 401         int i;
 402         arm_instruction_t cur_instruction;
 403         u32 opcode;
 404         int thumb = 0;
 405
 406         if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
 407         {
 408                 command_print(cmd_ctx, "current target isn't an ARMV4/5 target");
 409                 return ERROR_OK;
 410         }
 411
 412         if (argc < 2)
 413         {
 414                 command_print(cmd_ctx, "usage: armv4_5 disassemble <address> <count> ['thumb']");
 415                 return ERROR_OK;
 416         }
 417
 418         address = strtoul(args[0], NULL, 0);
 419         count = strtoul(args[1], NULL, 0);
 420
 421         if (argc >= 3)
 422                 if (strcmp(args[2], "thumb") == 0)
 423                         thumb = 1;
 424
 425         for (i = 0; i < count; i++)
 426         {
 427                 target_read_u32(target, address, &opcode);
 428                 arm_evaluate_opcode(opcode, address, &cur_instruction);
 429                 command_print(cmd_ctx, "%s", cur_instruction.text);
 430                 address += (thumb) ? 2 : 4;
 431         }
 432
 433         return ERROR_OK;
 434 }
 435
 436 int armv4_5_register_commands(struct command_context_s *cmd_ctx)
 437 {
 438         command_t *armv4_5_cmd;
 439
 440         armv4_5_cmd = register_command(cmd_ctx, NULL, "armv4_5", NULL, COMMAND_ANY, "armv4/5 specific commands");
 441
 442         register_command(cmd_ctx, armv4_5_cmd, "reg", handle_armv4_5_reg_command, COMMAND_EXEC, "display ARM core registers");
 443         register_command(cmd_ctx, armv4_5_cmd, "core_state", handle_armv4_5_core_state_command, COMMAND_EXEC, "display/change ARM core state <arm|thumb>");
 444
 445         register_command(cmd_ctx, armv4_5_cmd, "disassemble", handle_armv4_5_disassemble_command, COMMAND_EXEC, "disassemble instructions <address> <count> ['thumb']");
 446         return ERROR_OK;
 447 }
 448
 449 int armv4_5_get_gdb_reg_list(target_t *target, reg_t **reg_list[], int *reg_list_size)
 450 {
 451         armv4_5_common_t *armv4_5 = target->arch_info;
 452         int i;
 453
 454         if (armv4_5_mode_to_number(armv4_5->core_mode)==-1)
 455                 return ERROR_FAIL;
 456
 457         *reg_list_size = 26;
 458         *reg_list = malloc(sizeof(reg_t*) * (*reg_list_size));
 459
 460         for (i = 0; i < 16; i++)
 461         {
 462                 (*reg_list)[i] = &ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, i);
 463         }
 464
 465         for (i = 16; i < 24; i++)
 466         {
 467                 (*reg_list)[i] = &armv4_5_gdb_dummy_fp_reg;
 468         }
 469
 470         (*reg_list)[24] = &armv4_5_gdb_dummy_fps_reg;
 471         (*reg_list)[25] = &armv4_5->core_cache->reg_list[ARMV4_5_CPSR];
 472
 473         return ERROR_OK;
 474 }
 475
 476 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)
 477 {
 478         armv4_5_common_t *armv4_5 = target->arch_info;
 479         armv4_5_algorithm_t *armv4_5_algorithm_info = arch_info;
 480         enum armv4_5_state core_state = armv4_5->core_state;
 481         enum armv4_5_mode core_mode = armv4_5->core_mode;
 482         u32 context[17];
 483         u32 cpsr;
 484         int exit_breakpoint_size = 0;
 485         int i;
 486         int retval = ERROR_OK;
 487         LOG_DEBUG("Running algorithm");
 488
 489         if (armv4_5_algorithm_info->common_magic != ARMV4_5_COMMON_MAGIC)
 490         {
 491                 LOG_ERROR("current target isn't an ARMV4/5 target");
 492                 return ERROR_TARGET_INVALID;
 493         }
 494
 495         if (target->state != TARGET_HALTED)
 496         {
 497                 LOG_WARNING("target not halted");
 498                 return ERROR_TARGET_NOT_HALTED;
 499         }
 500
 501         if (armv4_5_mode_to_number(armv4_5->core_mode)==-1)
 502                 return ERROR_FAIL;
 503
 504         for (i = 0; i <= 16; i++)
 505         {
 506                 if (!ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5_algorithm_info->core_mode, i).valid)
 507                         armv4_5->read_core_reg(target, i, armv4_5_algorithm_info->core_mode);
 508                 context[i] = buf_get_u32(ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5_algorithm_info->core_mode, i).value, 0, 32);
 509         }
 510         cpsr = buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 32);
 511
 512         for (i = 0; i < num_mem_params; i++)
 513         {
 514                 target_write_buffer(target, mem_params[i].address, mem_params[i].size, mem_params[i].value);
 515         }
 516
 517         for (i = 0; i < num_reg_params; i++)
 518         {
 519                 reg_t *reg = register_get_by_name(armv4_5->core_cache, reg_params[i].reg_name, 0);
 520                 if (!reg)
 521                 {
 522                         LOG_ERROR("BUG: register '%s' not found", reg_params[i].reg_name);
 523                         exit(-1);
 524                 }
 525
 526                 if (reg->size != reg_params[i].size)
 527                 {
 528                         LOG_ERROR("BUG: register '%s' size doesn't match reg_params[i].size", reg_params[i].reg_name);
 529                         exit(-1);
 530                 }
 531
 532                 armv4_5_set_core_reg(reg, reg_params[i].value);
 533         }
 534
 535         armv4_5->core_state = armv4_5_algorithm_info->core_state;
 536         if (armv4_5->core_state == ARMV4_5_STATE_ARM)
 537                 exit_breakpoint_size = 4;
 538         else if (armv4_5->core_state == ARMV4_5_STATE_THUMB)
 539                 exit_breakpoint_size = 2;
 540         else
 541         {
 542                 LOG_ERROR("BUG: can't execute algorithms when not in ARM or Thumb state");
 543                 exit(-1);
 544         }
 545
 546         if (armv4_5_algorithm_info->core_mode != ARMV4_5_MODE_ANY)
 547         {
 548                 LOG_DEBUG("setting core_mode: 0x%2.2x", armv4_5_algorithm_info->core_mode);
 549                 buf_set_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 5, armv4_5_algorithm_info->core_mode);
 550                 armv4_5->core_cache->reg_list[ARMV4_5_CPSR].dirty = 1;
 551                 armv4_5->core_cache->reg_list[ARMV4_5_CPSR].valid = 1;
 552         }
 553
 554         if ((retval = breakpoint_add(target, exit_point, exit_breakpoint_size, BKPT_HARD)) != ERROR_OK)
 555         {
 556                 LOG_ERROR("can't add breakpoint to finish algorithm execution");
 557                 return ERROR_TARGET_FAILURE;
 558         }
 559
 560         target_resume(target, 0, entry_point, 1, 1);
 561
 562         target_wait_state(target, TARGET_HALTED, timeout_ms);
 563         if (target->state != TARGET_HALTED)
 564         {
 565                 if ((retval=target_halt(target))!=ERROR_OK)
 566                         return retval;
 567                 if ((retval=target_wait_state(target, TARGET_HALTED, 500))!=ERROR_OK)
 568                 {
 569                         return retval;
 570                 }
 571                 return ERROR_TARGET_TIMEOUT;
 572         }
 573
 574         if (buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32) != exit_point)
 575         {
 576                 LOG_WARNING("target reentered debug state, but not at the desired exit point: 0x%4.4x",
 577                         buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32));
 578                 return ERROR_TARGET_TIMEOUT;
 579         }
 580
 581         breakpoint_remove(target, exit_point);
 582
 583         for (i = 0; i < num_mem_params; i++)
 584         {
 585                 if (mem_params[i].direction != PARAM_OUT)
 586                         target_read_buffer(target, mem_params[i].address, mem_params[i].size, mem_params[i].value);
 587         }
 588
 589         for (i = 0; i < num_reg_params; i++)
 590         {
 591                 if (reg_params[i].direction != PARAM_OUT)
 592                 {
 593
 594                         reg_t *reg = register_get_by_name(armv4_5->core_cache, reg_params[i].reg_name, 0);
 595                         if (!reg)
 596                         {
 597                                 LOG_ERROR("BUG: register '%s' not found", reg_params[i].reg_name);
 598                                 exit(-1);
 599                         }
 600
 601                         if (reg->size != reg_params[i].size)
 602                         {
 603                                 LOG_ERROR("BUG: register '%s' size doesn't match reg_params[i].size", reg_params[i].reg_name);
 604                                 exit(-1);
 605                         }
 606
 607                         buf_set_u32(reg_params[i].value, 0, 32, buf_get_u32(reg->value, 0, 32));
 608                 }
 609         }
 610
 611         for (i = 0; i <= 16; i++)
 612         {
 613                 LOG_DEBUG("restoring register %s with value 0x%8.8x", ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5_algorithm_info->core_mode, i).name, context[i]);
 614                 buf_set_u32(ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5_algorithm_info->core_mode, i).value, 0, 32, context[i]);
 615                 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5_algorithm_info->core_mode, i).valid = 1;
 616                 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5_algorithm_info->core_mode, i).dirty = 1;
 617         }
 618         buf_set_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 32, cpsr);
 619         armv4_5->core_cache->reg_list[ARMV4_5_CPSR].valid = 1;
 620         armv4_5->core_cache->reg_list[ARMV4_5_CPSR].dirty = 1;
 621
 622         armv4_5->core_state = core_state;
 623         armv4_5->core_mode = core_mode;
 624
 625         return retval;
 626 }
 627
 628 int armv4_5_init_arch_info(target_t *target, armv4_5_common_t *armv4_5)
 629 {
 630         target->arch_info = armv4_5;
 631
 632         armv4_5->common_magic = ARMV4_5_COMMON_MAGIC;
 633         armv4_5->core_state = ARMV4_5_STATE_ARM;
 634         armv4_5->core_mode = ARMV4_5_MODE_USR;
 635
 636         return ERROR_OK;
 637 }