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   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 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include "replacements.h"
  25 #include "target.h"
  26 #include "target_request.h"
  27
  28 #include "log.h"
  29 #include "configuration.h"
  30 #include "binarybuffer.h"
  31 #include "jtag.h"
  32
  33 #include <string.h>
  34 #include <stdlib.h>
  35 #include <inttypes.h>
  36
  37 #include <sys/types.h>
  38 #include <sys/stat.h>
  39 #include <unistd.h>
  40 #include <errno.h>
  41
  42 #include <sys/time.h>
  43 #include <time.h>
  44
  45 #include <time_support.h>
  46
  47 #include <fileio.h>
  48 #include <image.h>
  49
  50 int cli_target_callback_event_handler(struct target_s *target, enum target_event event, void *priv);
  51
  52 int handle_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  53 int handle_daemon_startup_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  54 int handle_targets_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  55
  56 int handle_target_script_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  57 int handle_run_and_halt_time_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  58 int handle_working_area_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  59
  60 int handle_reg_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  61 int handle_poll_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  62 int handle_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  63 int handle_wait_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  64 int handle_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  65 int handle_soft_reset_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  66 int handle_resume_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  67 int handle_step_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  68 int handle_md_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  69 int handle_mw_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  70 int handle_load_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  71 int handle_dump_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  72 int handle_verify_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  73 int handle_bp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  74 int handle_rbp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  75 int handle_wp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  76 int handle_rwp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  77
  78 /* targets
  79  */
  80 extern target_type_t arm7tdmi_target;
  81 extern target_type_t arm720t_target;
  82 extern target_type_t arm9tdmi_target;
  83 extern target_type_t arm920t_target;
  84 extern target_type_t arm966e_target;
  85 extern target_type_t arm926ejs_target;
  86 extern target_type_t xscale_target;
  87 extern target_type_t cortexm3_target;
  88
  89 target_type_t *target_types[] =
  90 {
  91         &arm7tdmi_target,
  92         &arm9tdmi_target,
  93         &arm920t_target,
  94         &arm720t_target,
  95         &arm966e_target,
  96         &arm926ejs_target,
  97         &xscale_target,
  98         &cortexm3_target,
  99         NULL,
 100 };
 101
 102 target_t *targets = NULL;
 103 target_event_callback_t *target_event_callbacks = NULL;
 104 target_timer_callback_t *target_timer_callbacks = NULL;
 105
 106 char *target_state_strings[] =
 107 {
 108         "unknown",
 109         "running",
 110         "halted",
 111         "reset",
 112         "debug_running",
 113 };
 114
 115 char *target_debug_reason_strings[] =
 116 {
 117         "debug request", "breakpoint", "watchpoint",
 118         "watchpoint and breakpoint", "single step",
 119         "target not halted"
 120 };
 121
 122 char *target_endianess_strings[] =
 123 {
 124         "big endian",
 125         "little endian",
 126 };
 127
 128 enum daemon_startup_mode startup_mode = DAEMON_ATTACH;
 129
 130 static int target_continous_poll = 1;
 131
 132 /* read a u32 from a buffer in target memory endianness */
 133 u32 target_buffer_get_u32(target_t *target, u8 *buffer)
 134 {
 135         if (target->endianness == TARGET_LITTLE_ENDIAN)
 136                 return le_to_h_u32(buffer);
 137         else
 138                 return be_to_h_u32(buffer);
 139 }
 140
 141 /* read a u16 from a buffer in target memory endianness */
 142 u16 target_buffer_get_u16(target_t *target, u8 *buffer)
 143 {
 144         if (target->endianness == TARGET_LITTLE_ENDIAN)
 145                 return le_to_h_u16(buffer);
 146         else
 147                 return be_to_h_u16(buffer);
 148 }
 149
 150 /* write a u32 to a buffer in target memory endianness */
 151 void target_buffer_set_u32(target_t *target, u8 *buffer, u32 value)
 152 {
 153         if (target->endianness == TARGET_LITTLE_ENDIAN)
 154                 h_u32_to_le(buffer, value);
 155         else
 156                 h_u32_to_be(buffer, value);
 157 }
 158
 159 /* write a u16 to a buffer in target memory endianness */
 160 void target_buffer_set_u16(target_t *target, u8 *buffer, u16 value)
 161 {
 162         if (target->endianness == TARGET_LITTLE_ENDIAN)
 163                 h_u16_to_le(buffer, value);
 164         else
 165                 h_u16_to_be(buffer, value);
 166 }
 167
 168 /* returns a pointer to the n-th configured target */
 169 target_t* get_target_by_num(int num)
 170 {
 171         target_t *target = targets;
 172         int i = 0;
 173
 174         while (target)
 175         {
 176                 if (num == i)
 177                         return target;
 178                 target = target->next;
 179                 i++;
 180         }
 181
 182         return NULL;
 183 }
 184
 185 int get_num_by_target(target_t *query_target)
 186 {
 187         target_t *target = targets;
 188         int i = 0;
 189
 190         while (target)
 191         {
 192                 if (target == query_target)
 193                         return i;
 194                 target = target->next;
 195                 i++;
 196         }
 197
 198         return -1;
 199 }
 200
 201 target_t* get_current_target(command_context_t *cmd_ctx)
 202 {
 203         target_t *target = get_target_by_num(cmd_ctx->current_target);
 204
 205         if (target == NULL)
 206         {
 207                 ERROR("BUG: current_target out of bounds");
 208                 exit(-1);
 209         }
 210
 211         return target;
 212 }
 213
 214 /* Process target initialization, when target entered debug out of reset
 215  * the handler is unregistered at the end of this function, so it's only called once
 216  */
 217 int target_init_handler(struct target_s *target, enum target_event event, void *priv)
 218 {
 219         FILE *script;
 220         struct command_context_s *cmd_ctx = priv;
 221
 222         if ((event == TARGET_EVENT_HALTED) && (target->reset_script))
 223         {
 224                 target_unregister_event_callback(target_init_handler, priv);
 225
 226                 script = fopen(target->reset_script, "r");
 227                 if (!script)
 228                 {
 229                         ERROR("couldn't open script file %s", target->reset_script);
 230                                 return ERROR_OK;
 231                 }
 232
 233                 INFO("executing reset script '%s'", target->reset_script);
 234                 command_run_file(cmd_ctx, script, COMMAND_EXEC);
 235                 fclose(script);
 236
 237                 jtag_execute_queue();
 238         }
 239
 240         return ERROR_OK;
 241 }
 242
 243 int target_run_and_halt_handler(void *priv)
 244 {
 245         target_t *target = priv;
 246
 247         target->type->halt(target);
 248
 249         return ERROR_OK;
 250 }
 251
 252 int target_process_reset(struct command_context_s *cmd_ctx)
 253 {
 254         int retval = ERROR_OK;
 255         target_t *target;
 256
 257         /* prepare reset_halt where necessary */
 258         target = targets;
 259         while (target)
 260         {
 261                 switch (target->reset_mode)
 262                 {
 263                         case RESET_HALT:
 264                         case RESET_INIT:
 265                                 target->type->prepare_reset_halt(target);
 266                                 break;
 267                         default:
 268                                 break;
 269                 }
 270                 target = target->next;
 271         }
 272
 273         target = targets;
 274         while (target)
 275         {
 276                 target->type->assert_reset(target);
 277                 target = target->next;
 278         }
 279         jtag_execute_queue();
 280
 281         /* request target halt if necessary, and schedule further action */
 282         target = targets;
 283         while (target)
 284         {
 285                 switch (target->reset_mode)
 286                 {
 287                         case RESET_RUN:
 288                                 /* nothing to do if target just wants to be run */
 289                                 break;
 290                         case RESET_RUN_AND_HALT:
 291                                 /* schedule halt */
 292                                 target_register_timer_callback(target_run_and_halt_handler, target->run_and_halt_time, 0, target);
 293                                 break;
 294                         case RESET_RUN_AND_INIT:
 295                                 /* schedule halt */
 296                                 target_register_timer_callback(target_run_and_halt_handler, target->run_and_halt_time, 0, target);
 297                                 target_register_event_callback(target_init_handler, cmd_ctx);
 298                                 break;
 299                         case RESET_HALT:
 300                                 target->type->halt(target);
 301                                 break;
 302                         case RESET_INIT:
 303                                 target->type->halt(target);
 304                                 target_register_event_callback(target_init_handler, cmd_ctx);
 305                                 break;
 306                         default:
 307                                 ERROR("BUG: unknown target->reset_mode");
 308                 }
 309                 target = target->next;
 310         }
 311
 312         target = targets;
 313         while (target)
 314         {
 315                 target->type->deassert_reset(target);
 316
 317                 switch (target->reset_mode)
 318                 {
 319                         case RESET_INIT:
 320                         case RESET_HALT:
 321                                 // If we're already halted, then this is harmless(reducing # of execution paths here)
 322                                 // If nSRST & nTRST are tied together then the halt during reset failed(logged) and
 323                                 // we use this as fallback(there is no other output to tell the user that reset halt
 324                                 // didn't work).
 325                                 target->type->poll(target);
 326                                 target->type->halt(target);
 327                                 break;
 328                         default:
 329                                 break;
 330                 }
 331
 332
 333                 target = target->next;
 334         }
 335         jtag_execute_queue();
 336
 337         return retval;
 338 }
 339
 340 int target_init(struct command_context_s *cmd_ctx)
 341 {
 342         target_t *target = targets;
 343
 344         while (target)
 345         {
 346                 if (target->type->init_target(cmd_ctx, target) != ERROR_OK)
 347                 {
 348                         ERROR("target '%s' init failed", target->type->name);
 349                         exit(-1);
 350                 }
 351                 target = target->next;
 352         }
 353
 354         if (targets)
 355         {
 356                 target_register_user_commands(cmd_ctx);
 357                 target_register_timer_callback(handle_target, 100, 1, NULL);
 358         }
 359
 360         if (startup_mode == DAEMON_RESET)
 361                 target_process_reset(cmd_ctx);
 362
 363         return ERROR_OK;
 364 }
 365
 366 int target_register_event_callback(int (*callback)(struct target_s *target, enum target_event event, void *priv), void *priv)
 367 {
 368         target_event_callback_t **callbacks_p = &target_event_callbacks;
 369
 370         if (callback == NULL)
 371         {
 372                 return ERROR_INVALID_ARGUMENTS;
 373         }
 374
 375         if (*callbacks_p)
 376         {
 377                 while ((*callbacks_p)->next)
 378                         callbacks_p = &((*callbacks_p)->next);
 379                 callbacks_p = &((*callbacks_p)->next);
 380         }
 381
 382         (*callbacks_p) = malloc(sizeof(target_event_callback_t));
 383         (*callbacks_p)->callback = callback;
 384         (*callbacks_p)->priv = priv;
 385         (*callbacks_p)->next = NULL;
 386
 387         return ERROR_OK;
 388 }
 389
 390 int target_register_timer_callback(int (*callback)(void *priv), int time_ms, int periodic, void *priv)
 391 {
 392         target_timer_callback_t **callbacks_p = &target_timer_callbacks;
 393         struct timeval now;
 394
 395         if (callback == NULL)
 396         {
 397                 return ERROR_INVALID_ARGUMENTS;
 398         }
 399
 400         if (*callbacks_p)
 401         {
 402                 while ((*callbacks_p)->next)
 403                         callbacks_p = &((*callbacks_p)->next);
 404                 callbacks_p = &((*callbacks_p)->next);
 405         }
 406
 407         (*callbacks_p) = malloc(sizeof(target_timer_callback_t));
 408         (*callbacks_p)->callback = callback;
 409         (*callbacks_p)->periodic = periodic;
 410         (*callbacks_p)->time_ms = time_ms;
 411
 412         gettimeofday(&now, NULL);
 413         (*callbacks_p)->when.tv_usec = now.tv_usec + (time_ms % 1000) * 1000;
 414         time_ms -= (time_ms % 1000);
 415         (*callbacks_p)->when.tv_sec = now.tv_sec + (time_ms / 1000);
 416         if ((*callbacks_p)->when.tv_usec > 1000000)
 417         {
 418                 (*callbacks_p)->when.tv_usec = (*callbacks_p)->when.tv_usec - 1000000;
 419                 (*callbacks_p)->when.tv_sec += 1;
 420         }
 421
 422         (*callbacks_p)->priv = priv;
 423         (*callbacks_p)->next = NULL;
 424
 425         return ERROR_OK;
 426 }
 427
 428 int target_unregister_event_callback(int (*callback)(struct target_s *target, enum target_event event, void *priv), void *priv)
 429 {
 430         target_event_callback_t **p = &target_event_callbacks;
 431         target_event_callback_t *c = target_event_callbacks;
 432
 433         if (callback == NULL)
 434         {
 435                 return ERROR_INVALID_ARGUMENTS;
 436         }
 437
 438         while (c)
 439         {
 440                 target_event_callback_t *next = c->next;
 441                 if ((c->callback == callback) && (c->priv == priv))
 442                 {
 443                         *p = next;
 444                         free(c);
 445                         return ERROR_OK;
 446                 }
 447                 else
 448                         p = &(c->next);
 449                 c = next;
 450         }
 451
 452         return ERROR_OK;
 453 }
 454
 455 int target_unregister_timer_callback(int (*callback)(void *priv), void *priv)
 456 {
 457         target_timer_callback_t **p = &target_timer_callbacks;
 458         target_timer_callback_t *c = target_timer_callbacks;
 459
 460         if (callback == NULL)
 461         {
 462                 return ERROR_INVALID_ARGUMENTS;
 463         }
 464
 465         while (c)
 466         {
 467                 target_timer_callback_t *next = c->next;
 468                 if ((c->callback == callback) && (c->priv == priv))
 469                 {
 470                         *p = next;
 471                         free(c);
 472                         return ERROR_OK;
 473                 }
 474                 else
 475                         p = &(c->next);
 476                 c = next;
 477         }
 478
 479         return ERROR_OK;
 480 }
 481
 482 int target_call_event_callbacks(target_t *target, enum target_event event)
 483 {
 484         target_event_callback_t *callback = target_event_callbacks;
 485         target_event_callback_t *next_callback;
 486
 487         DEBUG("target event %i", event);
 488
 489         while (callback)
 490         {
 491                 next_callback = callback->next;
 492                 callback->callback(target, event, callback->priv);
 493                 callback = next_callback;
 494         }
 495
 496         return ERROR_OK;
 497 }
 498
 499 int target_call_timer_callbacks()
 500 {
 501         target_timer_callback_t *callback = target_timer_callbacks;
 502         target_timer_callback_t *next_callback;
 503         struct timeval now;
 504
 505         gettimeofday(&now, NULL);
 506
 507         while (callback)
 508         {
 509                 next_callback = callback->next;
 510
 511                 if (((now.tv_sec >= callback->when.tv_sec) && (now.tv_usec >= callback->when.tv_usec))
 512                         || (now.tv_sec > callback->when.tv_sec))
 513                 {
 514                         callback->callback(callback->priv);
 515                         if (callback->periodic)
 516                         {
 517                                 int time_ms = callback->time_ms;
 518                                 callback->when.tv_usec = now.tv_usec + (time_ms % 1000) * 1000;
 519                                 time_ms -= (time_ms % 1000);
 520                                 callback->when.tv_sec = now.tv_sec + time_ms / 1000;
 521                                 if (callback->when.tv_usec > 1000000)
 522                                 {
 523                                         callback->when.tv_usec = callback->when.tv_usec - 1000000;
 524                                         callback->when.tv_sec += 1;
 525                                 }
 526                         }
 527                         else
 528                                 target_unregister_timer_callback(callback->callback, callback->priv);
 529                 }
 530
 531                 callback = next_callback;
 532         }
 533
 534         return ERROR_OK;
 535 }
 536
 537 int target_alloc_working_area(struct target_s *target, u32 size, working_area_t **area)
 538 {
 539         working_area_t *c = target->working_areas;
 540         working_area_t *new_wa = NULL;
 541
 542         /* only allocate multiples of 4 byte */
 543         if (size % 4)
 544         {
 545                 ERROR("BUG: code tried to allocate unaligned number of bytes, padding");
 546                 size = CEIL(size, 4);
 547         }
 548
 549         /* see if there's already a matching working area */
 550         while (c)
 551         {
 552                 if ((c->free) && (c->size == size))
 553                 {
 554                         new_wa = c;
 555                         break;
 556                 }
 557                 c = c->next;
 558         }
 559
 560         /* if not, allocate a new one */
 561         if (!new_wa)
 562         {
 563                 working_area_t **p = &target->working_areas;
 564                 u32 first_free = target->working_area;
 565                 u32 free_size = target->working_area_size;
 566
 567                 DEBUG("allocating new working area");
 568
 569                 c = target->working_areas;
 570                 while (c)
 571                 {
 572                         first_free += c->size;
 573                         free_size -= c->size;
 574                         p = &c->next;
 575                         c = c->next;
 576                 }
 577
 578                 if (free_size < size)
 579                 {
 580                         WARNING("not enough working area available");
 581                         return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
 582                 }
 583
 584                 new_wa = malloc(sizeof(working_area_t));
 585                 new_wa->next = NULL;
 586                 new_wa->size = size;
 587                 new_wa->address = first_free;
 588
 589                 if (target->backup_working_area)
 590                 {
 591                         new_wa->backup = malloc(new_wa->size);
 592                         target->type->read_memory(target, new_wa->address, 4, new_wa->size / 4, new_wa->backup);
 593                 }
 594                 else
 595                 {
 596                         new_wa->backup = NULL;
 597                 }
 598
 599                 /* put new entry in list */
 600                 *p = new_wa;
 601         }
 602
 603         /* mark as used, and return the new (reused) area */
 604         new_wa->free = 0;
 605         *area = new_wa;
 606
 607         /* user pointer */
 608         new_wa->user = area;
 609
 610         return ERROR_OK;
 611 }
 612
 613 int target_free_working_area(struct target_s *target, working_area_t *area)
 614 {
 615         if (area->free)
 616                 return ERROR_OK;
 617
 618         if (target->backup_working_area)
 619                 target->type->write_memory(target, area->address, 4, area->size / 4, area->backup);
 620
 621         area->free = 1;
 622
 623         /* mark user pointer invalid */
 624         *area->user = NULL;
 625         area->user = NULL;
 626
 627         return ERROR_OK;
 628 }
 629
 630 int target_free_all_working_areas(struct target_s *target)
 631 {
 632         working_area_t *c = target->working_areas;
 633
 634         while (c)
 635         {
 636                 working_area_t *next = c->next;
 637                 target_free_working_area(target, c);
 638
 639                 if (c->backup)
 640                         free(c->backup);
 641
 642                 free(c);
 643
 644                 c = next;
 645         }
 646
 647         target->working_areas = NULL;
 648
 649         return ERROR_OK;
 650 }
 651
 652 int target_register_commands(struct command_context_s *cmd_ctx)
 653 {
 654         register_command(cmd_ctx, NULL, "target", handle_target_command, COMMAND_CONFIG, NULL);
 655         register_command(cmd_ctx, NULL, "targets", handle_targets_command, COMMAND_EXEC, NULL);
 656         register_command(cmd_ctx, NULL, "daemon_startup", handle_daemon_startup_command, COMMAND_CONFIG, NULL);
 657         register_command(cmd_ctx, NULL, "target_script", handle_target_script_command, COMMAND_CONFIG, NULL);
 658         register_command(cmd_ctx, NULL, "run_and_halt_time", handle_run_and_halt_time_command, COMMAND_CONFIG, NULL);
 659         register_command(cmd_ctx, NULL, "working_area", handle_working_area_command, COMMAND_CONFIG, NULL);
 660
 661         return ERROR_OK;
 662 }
 663
 664 int target_write_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer)
 665 {
 666         int retval;
 667
 668         DEBUG("writing buffer of %i byte at 0x%8.8x", size, address);
 669
 670         /* handle writes of less than 4 byte */
 671         if (size < 4)
 672         {
 673                 if ((retval = target->type->write_memory(target, address, 1, size, buffer)) != ERROR_OK)
 674                         return retval;
 675                 return ERROR_OK;
 676         }
 677
 678         /* handle unaligned head bytes */
 679         if (address % 4)
 680         {
 681                 int unaligned = 4 - (address % 4);
 682
 683                 if ((retval = target->type->write_memory(target, address, 1, unaligned, buffer)) != ERROR_OK)
 684                         return retval;
 685
 686                 buffer += unaligned;
 687                 address += unaligned;
 688                 size -= unaligned;
 689         }
 690
 691         /* handle aligned words */
 692         if (size >= 4)
 693         {
 694                 int aligned = size - (size % 4);
 695
 696                 /* use bulk writes above a certain limit. This may have to be changed */
 697                 if (aligned > 128)
 698                 {
 699                         if ((retval = target->type->bulk_write_memory(target, address, aligned / 4, buffer)) != ERROR_OK)
 700                                 return retval;
 701                 }
 702                 else
 703                 {
 704                         if ((retval = target->type->write_memory(target, address, 4, aligned / 4, buffer)) != ERROR_OK)
 705                                 return retval;
 706                 }
 707
 708                 buffer += aligned;
 709                 address += aligned;
 710                 size -= aligned;
 711         }
 712
 713         /* handle tail writes of less than 4 bytes */
 714         if (size > 0)
 715         {
 716                 if ((retval = target->type->write_memory(target, address, 1, size, buffer)) != ERROR_OK)
 717                         return retval;
 718         }
 719
 720         return ERROR_OK;
 721 }
 722
 723 int target_read_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer)
 724 {
 725         int retval;
 726
 727         DEBUG("reading buffer of %i byte at 0x%8.8x", size, address);
 728
 729         /* handle reads of less than 4 byte */
 730         if (size < 4)
 731         {
 732                 if ((retval = target->type->read_memory(target, address, 1, size, buffer)) != ERROR_OK)
 733                         return retval;
 734                 return ERROR_OK;
 735         }
 736
 737         /* handle unaligned head bytes */
 738         if (address % 4)
 739         {
 740                 int unaligned = 4 - (address % 4);
 741
 742                 if ((retval = target->type->read_memory(target, address, 1, unaligned, buffer)) != ERROR_OK)
 743                         return retval;
 744
 745                 buffer += unaligned;
 746                 address += unaligned;
 747                 size -= unaligned;
 748         }
 749
 750         /* handle aligned words */
 751         if (size >= 4)
 752         {
 753                 int aligned = size - (size % 4);
 754
 755                 if ((retval = target->type->read_memory(target, address, 4, aligned / 4, buffer)) != ERROR_OK)
 756                         return retval;
 757
 758                 buffer += aligned;
 759                 address += aligned;
 760                 size -= aligned;
 761         }
 762
 763         /* handle tail writes of less than 4 bytes */
 764         if (size > 0)
 765         {
 766                 if ((retval = target->type->read_memory(target, address, 1, size, buffer)) != ERROR_OK)
 767                         return retval;
 768         }
 769
 770         return ERROR_OK;
 771 }
 772
 773 int target_checksum_memory(struct target_s *target, u32 address, u32 size, u32* crc)
 774 {
 775         u8 *buffer;
 776         int retval;
 777         int i;
 778         u32 checksum = 0;
 779
 780         if ((retval = target->type->checksum_memory(target, address,
 781                 size, &checksum)) == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
 782         {
 783                 buffer = malloc(size);
 784                 target_read_buffer(target, address, size, buffer);
 785
 786                 /* convert to target endianess */
 787                 for (i = 0; i < (size/sizeof(u32)); i++)
 788                 {
 789                         u32 target_data;
 790                         target_data = target_buffer_get_u32(target, &buffer[i*sizeof(u32)]);
 791                         target_buffer_set_u32(target, &buffer[i*sizeof(u32)], target_data);
 792                 }
 793
 794                 retval = image_calculate_checksum( buffer, size, &checksum );
 795                 free(buffer);
 796         }
 797
 798         *crc = checksum;
 799
 800         return retval;
 801 }
 802
 803 int target_read_u32(struct target_s *target, u32 address, u32 *value)
 804 {
 805         u8 value_buf[4];
 806
 807         int retval = target->type->read_memory(target, address, 4, 1, value_buf);
 808
 809         if (retval == ERROR_OK)
 810         {
 811                 *value = target_buffer_get_u32(target, value_buf);
 812                 DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, *value);
 813         }
 814         else
 815         {
 816                 *value = 0x0;
 817                 DEBUG("address: 0x%8.8x failed", address);
 818         }
 819
 820         return retval;
 821 }
 822
 823 int target_read_u16(struct target_s *target, u32 address, u16 *value)
 824 {
 825         u8 value_buf[2];
 826
 827         int retval = target->type->read_memory(target, address, 2, 1, value_buf);
 828
 829         if (retval == ERROR_OK)
 830         {
 831                 *value = target_buffer_get_u16(target, value_buf);
 832                 DEBUG("address: 0x%8.8x, value: 0x%4.4x", address, *value);
 833         }
 834         else
 835         {
 836                 *value = 0x0;
 837                 DEBUG("address: 0x%8.8x failed", address);
 838         }
 839
 840         return retval;
 841 }
 842
 843 int target_read_u8(struct target_s *target, u32 address, u8 *value)
 844 {
 845         int retval = target->type->read_memory(target, address, 1, 1, value);
 846
 847         if (retval == ERROR_OK)
 848         {
 849                 DEBUG("address: 0x%8.8x, value: 0x%2.2x", address, *value);
 850         }
 851         else
 852         {
 853                 *value = 0x0;
 854                 DEBUG("address: 0x%8.8x failed", address);
 855         }
 856
 857         return retval;
 858 }
 859
 860 int target_write_u32(struct target_s *target, u32 address, u32 value)
 861 {
 862         int retval;
 863         u8 value_buf[4];
 864
 865         DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, value);
 866
 867         target_buffer_set_u32(target, value_buf, value);
 868         if ((retval = target->type->write_memory(target, address, 4, 1, value_buf)) != ERROR_OK)
 869         {
 870                 DEBUG("failed: %i", retval);
 871         }
 872
 873         return retval;
 874 }
 875
 876 int target_write_u16(struct target_s *target, u32 address, u16 value)
 877 {
 878         int retval;
 879         u8 value_buf[2];
 880
 881         DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, value);
 882
 883         target_buffer_set_u16(target, value_buf, value);
 884         if ((retval = target->type->write_memory(target, address, 2, 1, value_buf)) != ERROR_OK)
 885         {
 886                 DEBUG("failed: %i", retval);
 887         }
 888
 889         return retval;
 890 }
 891
 892 int target_write_u8(struct target_s *target, u32 address, u8 value)
 893 {
 894         int retval;
 895
 896         DEBUG("address: 0x%8.8x, value: 0x%2.2x", address, value);
 897
 898         if ((retval = target->type->read_memory(target, address, 1, 1, &value)) != ERROR_OK)
 899         {
 900                 DEBUG("failed: %i", retval);
 901         }
 902
 903         return retval;
 904 }
 905
 906 int target_register_user_commands(struct command_context_s *cmd_ctx)
 907 {
 908         register_command(cmd_ctx,  NULL, "reg", handle_reg_command, COMMAND_EXEC, NULL);
 909         register_command(cmd_ctx,  NULL, "poll", handle_poll_command, COMMAND_EXEC, "poll target state");
 910         register_command(cmd_ctx,  NULL, "wait_halt", handle_wait_halt_command, COMMAND_EXEC, "wait for target halt [time (s)]");
 911         register_command(cmd_ctx,  NULL, "halt", handle_halt_command, COMMAND_EXEC, "halt target");
 912         register_command(cmd_ctx,  NULL, "resume", handle_resume_command, COMMAND_EXEC, "resume target [addr]");
 913         register_command(cmd_ctx,  NULL, "step", handle_step_command, COMMAND_EXEC, "step one instruction from current PC or [addr]");
 914         register_command(cmd_ctx,  NULL, "reset", handle_reset_command, COMMAND_EXEC, "reset target [run|halt|init|run_and_halt|run_and_init]");
 915         register_command(cmd_ctx,  NULL, "soft_reset_halt", handle_soft_reset_halt_command, COMMAND_EXEC, "halt the target and do a soft reset");
 916
 917         register_command(cmd_ctx,  NULL, "mdw", handle_md_command, COMMAND_EXEC, "display memory words <addr> [count]");
 918         register_command(cmd_ctx,  NULL, "mdh", handle_md_command, COMMAND_EXEC, "display memory half-words <addr> [count]");
 919         register_command(cmd_ctx,  NULL, "mdb", handle_md_command, COMMAND_EXEC, "display memory bytes <addr> [count]");
 920
 921         register_command(cmd_ctx,  NULL, "mww", handle_mw_command, COMMAND_EXEC, "write memory word <addr> <value>");
 922         register_command(cmd_ctx,  NULL, "mwh", handle_mw_command, COMMAND_EXEC, "write memory half-word <addr> <value>");
 923         register_command(cmd_ctx,  NULL, "mwb", handle_mw_command, COMMAND_EXEC, "write memory byte <addr> <value>");
 924
 925         register_command(cmd_ctx,  NULL, "bp", handle_bp_command, COMMAND_EXEC, "set breakpoint <address> <length> [hw]");
 926         register_command(cmd_ctx,  NULL, "rbp", handle_rbp_command, COMMAND_EXEC, "remove breakpoint <adress>");
 927         register_command(cmd_ctx,  NULL, "wp", handle_wp_command, COMMAND_EXEC, "set watchpoint <address> <length> <r/w/a> [value] [mask]");
 928         register_command(cmd_ctx,  NULL, "rwp", handle_rwp_command, COMMAND_EXEC, "remove watchpoint <adress>");
 929
 930         register_command(cmd_ctx,  NULL, "load_image", handle_load_image_command, COMMAND_EXEC, "load_image <file> <address> ['bin'|'ihex'|'elf'|'s19']");
 931         register_command(cmd_ctx,  NULL, "dump_image", handle_dump_image_command, COMMAND_EXEC, "dump_image <file> <address> <size>");
 932         register_command(cmd_ctx,  NULL, "verify_image", handle_verify_image_command, COMMAND_EXEC, "verify_image <file> [offset] [type]");
 933         register_command(cmd_ctx,  NULL, "load_binary", handle_load_image_command, COMMAND_EXEC, "[DEPRECATED] load_binary <file> <address>");
 934         register_command(cmd_ctx,  NULL, "dump_binary", handle_dump_image_command, COMMAND_EXEC, "[DEPRECATED] dump_binary <file> <address> <size>");
 935
 936         target_request_register_commands(cmd_ctx);
 937         trace_register_commands(cmd_ctx);
 938
 939         return ERROR_OK;
 940 }
 941
 942 int handle_targets_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 943 {
 944         target_t *target = targets;
 945         int count = 0;
 946
 947         if (argc == 1)
 948         {
 949                 int num = strtoul(args[0], NULL, 0);
 950
 951                 while (target)
 952                 {
 953                         count++;
 954                         target = target->next;
 955                 }
 956
 957                 if (num < count)
 958                         cmd_ctx->current_target = num;
 959                 else
 960                         command_print(cmd_ctx, "%i is out of bounds, only %i targets are configured", num, count);
 961
 962                 return ERROR_OK;
 963         }
 964
 965         while (target)
 966         {
 967                 command_print(cmd_ctx, "%i: %s (%s), state: %s", count++, target->type->name, target_endianess_strings[target->endianness], target_state_strings[target->state]);
 968                 target = target->next;
 969         }
 970
 971         return ERROR_OK;
 972 }
 973
 974 int handle_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 975 {
 976         int i;
 977         int found = 0;
 978
 979         if (argc < 3)
 980         {
 981                 ERROR("target command requires at least three arguments: <type> <endianess> <reset_mode>");
 982                 exit(-1);
 983         }
 984
 985         /* search for the specified target */
 986         if (args[0] && (args[0][0] != 0))
 987         {
 988                 for (i = 0; target_types[i]; i++)
 989                 {
 990                         if (strcmp(args[0], target_types[i]->name) == 0)
 991                         {
 992                                 target_t **last_target_p = &targets;
 993
 994                                 /* register target specific commands */
 995                                 if (target_types[i]->register_commands(cmd_ctx) != ERROR_OK)
 996                                 {
 997                                         ERROR("couldn't register '%s' commands", args[0]);
 998                                         exit(-1);
 999                                 }
1000
1001                                 if (*last_target_p)
1002                                 {
1003                                         while ((*last_target_p)->next)
1004                                                 last_target_p = &((*last_target_p)->next);
1005                                         last_target_p = &((*last_target_p)->next);
1006                                 }
1007
1008                                 *last_target_p = malloc(sizeof(target_t));
1009
1010                                 (*last_target_p)->type = target_types[i];
1011
1012                                 if (strcmp(args[1], "big") == 0)
1013                                         (*last_target_p)->endianness = TARGET_BIG_ENDIAN;
1014                                 else if (strcmp(args[1], "little") == 0)
1015                                         (*last_target_p)->endianness = TARGET_LITTLE_ENDIAN;
1016                                 else
1017                                 {
1018                                         ERROR("endianness must be either 'little' or 'big', not '%s'", args[1]);
1019                                         exit(-1);
1020                                 }
1021
1022                                 /* what to do on a target reset */
1023                                 if (strcmp(args[2], "reset_halt") == 0)
1024                                         (*last_target_p)->reset_mode = RESET_HALT;
1025                                 else if (strcmp(args[2], "reset_run") == 0)
1026                                         (*last_target_p)->reset_mode = RESET_RUN;
1027                                 else if (strcmp(args[2], "reset_init") == 0)
1028                                         (*last_target_p)->reset_mode = RESET_INIT;
1029                                 else if (strcmp(args[2], "run_and_halt") == 0)
1030                                         (*last_target_p)->reset_mode = RESET_RUN_AND_HALT;
1031                                 else if (strcmp(args[2], "run_and_init") == 0)
1032                                         (*last_target_p)->reset_mode = RESET_RUN_AND_INIT;
1033                                 else
1034                                 {
1035                                         ERROR("unknown target startup mode %s", args[2]);
1036                                         exit(-1);
1037                                 }
1038                                 (*last_target_p)->run_and_halt_time = 1000; /* default 1s */
1039
1040                                 (*last_target_p)->reset_script = NULL;
1041                                 (*last_target_p)->post_halt_script = NULL;
1042                                 (*last_target_p)->pre_resume_script = NULL;
1043                                 (*last_target_p)->gdb_program_script = NULL;
1044
1045                                 (*last_target_p)->working_area = 0x0;
1046                                 (*last_target_p)->working_area_size = 0x0;
1047                                 (*last_target_p)->working_areas = NULL;
1048                                 (*last_target_p)->backup_working_area = 0;
1049
1050                                 (*last_target_p)->state = TARGET_UNKNOWN;
1051                                 (*last_target_p)->reg_cache = NULL;
1052                                 (*last_target_p)->breakpoints = NULL;
1053                                 (*last_target_p)->watchpoints = NULL;
1054                                 (*last_target_p)->next = NULL;
1055                                 (*last_target_p)->arch_info = NULL;
1056
1057                                 /* initialize trace information */
1058                                 (*last_target_p)->trace_info = malloc(sizeof(trace_t));
1059                                 (*last_target_p)->trace_info->num_trace_points = 0;
1060                                 (*last_target_p)->trace_info->trace_points_size = 0;
1061                                 (*last_target_p)->trace_info->trace_points = NULL;
1062                                 (*last_target_p)->trace_info->trace_history_size = 0;
1063                                 (*last_target_p)->trace_info->trace_history = NULL;
1064                                 (*last_target_p)->trace_info->trace_history_pos = 0;
1065                                 (*last_target_p)->trace_info->trace_history_overflowed = 0;
1066
1067                                 (*last_target_p)->dbgmsg = NULL;
1068                                 (*last_target_p)->dbg_msg_enabled = 0;
1069
1070                                 (*last_target_p)->type->target_command(cmd_ctx, cmd, args, argc, *last_target_p);
1071
1072                                 found = 1;
1073                                 break;
1074                         }
1075                 }
1076         }
1077
1078         /* no matching target found */
1079         if (!found)
1080         {
1081                 ERROR("target '%s' not found", args[0]);
1082                 exit(-1);
1083         }
1084
1085         return ERROR_OK;
1086 }
1087
1088 /* usage: target_script <target#> <event> <script_file> */
1089 int handle_target_script_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1090 {
1091         target_t *target = NULL;
1092
1093         if (argc < 3)
1094         {
1095                 ERROR("incomplete target_script command");
1096                 exit(-1);
1097         }
1098
1099         target = get_target_by_num(strtoul(args[0], NULL, 0));
1100
1101         if (!target)
1102         {
1103                 ERROR("target number '%s' not defined", args[0]);
1104                 exit(-1);
1105         }
1106
1107         if (strcmp(args[1], "reset") == 0)
1108         {
1109                 if (target->reset_script)
1110                         free(target->reset_script);
1111                 target->reset_script = strdup(args[2]);
1112         }
1113         else if (strcmp(args[1], "post_halt") == 0)
1114         {
1115                 if (target->post_halt_script)
1116                         free(target->post_halt_script);
1117                 target->post_halt_script = strdup(args[2]);
1118         }
1119         else if (strcmp(args[1], "pre_resume") == 0)
1120         {
1121                 if (target->pre_resume_script)
1122                         free(target->pre_resume_script);
1123                 target->pre_resume_script = strdup(args[2]);
1124         }
1125         else if (strcmp(args[1], "gdb_program_config") == 0)
1126         {
1127                 if (target->gdb_program_script)
1128                         free(target->gdb_program_script);
1129                 target->gdb_program_script = strdup(args[2]);
1130         }
1131         else
1132         {
1133                 ERROR("unknown event type: '%s", args[1]);
1134                 exit(-1);
1135         }
1136
1137         return ERROR_OK;
1138 }
1139
1140 int handle_run_and_halt_time_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1141 {
1142         target_t *target = NULL;
1143
1144         if (argc < 2)
1145         {
1146                 ERROR("incomplete run_and_halt_time command");
1147                 exit(-1);
1148         }
1149
1150         target = get_target_by_num(strtoul(args[0], NULL, 0));
1151
1152         if (!target)
1153         {
1154                 ERROR("target number '%s' not defined", args[0]);
1155                 exit(-1);
1156         }
1157
1158         target->run_and_halt_time = strtoul(args[1], NULL, 0);
1159
1160         return ERROR_OK;
1161 }
1162
1163 int handle_working_area_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1164 {
1165         target_t *target = NULL;
1166
1167         if (argc < 4)
1168         {
1169                 ERROR("incomplete working_area command. usage: working_area <target#> <address> <size> <'backup'|'nobackup'>");
1170                 exit(-1);
1171         }
1172
1173         target = get_target_by_num(strtoul(args[0], NULL, 0));
1174
1175         if (!target)
1176         {
1177                 ERROR("target number '%s' not defined", args[0]);
1178                 exit(-1);
1179         }
1180
1181         target->working_area = strtoul(args[1], NULL, 0);
1182         target->working_area_size = strtoul(args[2], NULL, 0);
1183
1184         if (strcmp(args[3], "backup") == 0)
1185         {
1186                 target->backup_working_area = 1;
1187         }
1188         else if (strcmp(args[3], "nobackup") == 0)
1189         {
1190                 target->backup_working_area = 0;
1191         }
1192         else
1193         {
1194                 ERROR("unrecognized <backup|nobackup> argument (%s)", args[3]);
1195                 exit(-1);
1196         }
1197
1198         return ERROR_OK;
1199 }
1200
1201
1202 /* process target state changes */
1203 int handle_target(void *priv)
1204 {
1205         int retval;
1206         target_t *target = targets;
1207
1208         while (target)
1209         {
1210                 /* only poll if target isn't already halted */
1211                 if (target->state != TARGET_HALTED)
1212                 {
1213                         if (target_continous_poll)
1214                                 if ((retval = target->type->poll(target)) < 0)
1215                                 {
1216                                         ERROR("couldn't poll target. It's due for a reset.");
1217                                 }
1218                 }
1219
1220                 target = target->next;
1221         }
1222
1223         return ERROR_OK;
1224 }
1225
1226 int handle_reg_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1227 {
1228         target_t *target;
1229         reg_t *reg = NULL;
1230         int count = 0;
1231         char *value;
1232
1233         DEBUG("-");
1234
1235         target = get_current_target(cmd_ctx);
1236
1237         /* list all available registers for the current target */
1238         if (argc == 0)
1239         {
1240                 reg_cache_t *cache = target->reg_cache;
1241
1242                 count = 0;
1243                 while(cache)
1244                 {
1245                         int i;
1246                         for (i = 0; i < cache->num_regs; i++)
1247                         {
1248                                 value = buf_to_str(cache->reg_list[i].value, cache->reg_list[i].size, 16);
1249                                 command_print(cmd_ctx, "(%i) %s (/%i): 0x%s (dirty: %i, valid: %i)", count++, cache->reg_list[i].name, cache->reg_list[i].size, value, cache->reg_list[i].dirty, cache->reg_list[i].valid);
1250                                 free(value);
1251                         }
1252                         cache = cache->next;
1253                 }
1254
1255                 return ERROR_OK;
1256         }
1257
1258         /* access a single register by its ordinal number */
1259         if ((args[0][0] >= '0') && (args[0][0] <= '9'))
1260         {
1261                 int num = strtoul(args[0], NULL, 0);
1262                 reg_cache_t *cache = target->reg_cache;
1263
1264                 count = 0;
1265                 while(cache)
1266                 {
1267                         int i;
1268                         for (i = 0; i < cache->num_regs; i++)
1269                         {
1270                                 if (count++ == num)
1271                                 {
1272                                         reg = &cache->reg_list[i];
1273                                         break;
1274                                 }
1275                         }
1276                         if (reg)
1277                                 break;
1278                         cache = cache->next;
1279                 }
1280
1281                 if (!reg)
1282                 {
1283                         command_print(cmd_ctx, "%i is out of bounds, the current target has only %i registers (0 - %i)", num, count, count - 1);
1284                         return ERROR_OK;
1285                 }
1286         } else /* access a single register by its name */
1287         {
1288                 reg = register_get_by_name(target->reg_cache, args[0], 1);
1289
1290                 if (!reg)
1291                 {
1292                         command_print(cmd_ctx, "register %s not found in current target", args[0]);
1293                         return ERROR_OK;
1294                 }
1295         }
1296
1297         /* display a register */
1298         if ((argc == 1) || ((argc == 2) && !((args[1][0] >= '0') && (args[1][0] <= '9'))))
1299         {
1300                 if ((argc == 2) && (strcmp(args[1], "force") == 0))
1301                         reg->valid = 0;
1302
1303                 if (reg->valid == 0)
1304                 {
1305                         reg_arch_type_t *arch_type = register_get_arch_type(reg->arch_type);
1306                         if (arch_type == NULL)
1307                         {
1308                                 ERROR("BUG: encountered unregistered arch type");
1309                                 return ERROR_OK;
1310                         }
1311                         arch_type->get(reg);
1312                 }
1313                 value = buf_to_str(reg->value, reg->size, 16);
1314                 command_print(cmd_ctx, "%s (/%i): 0x%s", reg->name, reg->size, value);
1315                 free(value);
1316                 return ERROR_OK;
1317         }
1318
1319         /* set register value */
1320         if (argc == 2)
1321         {
1322                 u8 *buf = malloc(CEIL(reg->size, 8));
1323                 str_to_buf(args[1], strlen(args[1]), buf, reg->size, 0);
1324
1325                 reg_arch_type_t *arch_type = register_get_arch_type(reg->arch_type);
1326                 if (arch_type == NULL)
1327                 {
1328                         ERROR("BUG: encountered unregistered arch type");
1329                         return ERROR_OK;
1330                 }
1331
1332                 arch_type->set(reg, buf);
1333
1334                 value = buf_to_str(reg->value, reg->size, 16);
1335                 command_print(cmd_ctx, "%s (/%i): 0x%s", reg->name, reg->size, value);
1336                 free(value);
1337
1338                 free(buf);
1339
1340                 return ERROR_OK;
1341         }
1342
1343         command_print(cmd_ctx, "usage: reg <#|name> [value]");
1344
1345         return ERROR_OK;
1346 }
1347
1348 int handle_poll_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1349 {
1350         target_t *target = get_current_target(cmd_ctx);
1351         char buffer[512];
1352
1353         if (argc == 0)
1354         {
1355                 command_print(cmd_ctx, "target state: %s", target_state_strings[target->type->poll(target)]);
1356                 if (target->state == TARGET_HALTED)
1357                 {
1358                         target->type->arch_state(target, buffer, 512);
1359                         buffer[511] = 0;
1360                         command_print(cmd_ctx, "%s", buffer);
1361                 }
1362         }
1363         else
1364         {
1365                 if (strcmp(args[0], "on") == 0)
1366                 {
1367                         target_continous_poll = 1;
1368                 }
1369                 else if (strcmp(args[0], "off") == 0)
1370                 {
1371                         target_continous_poll = 0;
1372                 }
1373         }
1374
1375
1376         return ERROR_OK;
1377 }
1378
1379 int handle_wait_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1380 {
1381         target_t *target = get_current_target(cmd_ctx);
1382         struct timeval timeout, now;
1383
1384         gettimeofday(&timeout, NULL);
1385         if (!argc)
1386                 timeval_add_time(&timeout, 5, 0);
1387         else {
1388                 char *end;
1389
1390                 timeval_add_time(&timeout, strtoul(args[0], &end, 0), 0);
1391                 if (*end) {
1392                         command_print(cmd_ctx, "usage: wait_halt [seconds]");
1393                         return ERROR_OK;
1394                 }
1395         }
1396
1397         command_print(cmd_ctx, "waiting for target halted...");
1398
1399         while(target->type->poll(target))
1400         {
1401                 if (target->state == TARGET_HALTED)
1402                 {
1403                         command_print(cmd_ctx, "target halted");
1404                         break;
1405                 }
1406                 target_call_timer_callbacks();
1407
1408                 gettimeofday(&now, NULL);
1409                 if ((now.tv_sec >= timeout.tv_sec) && (now.tv_usec >= timeout.tv_usec))
1410                 {
1411                         command_print(cmd_ctx, "timed out while waiting for target halt");
1412                         ERROR("timed out while waiting for target halt");
1413                         break;
1414                 }
1415         }
1416
1417         return ERROR_OK;
1418 }
1419
1420 int handle_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1421 {
1422         int retval;
1423         target_t *target = get_current_target(cmd_ctx);
1424
1425         DEBUG("-");
1426
1427         command_print(cmd_ctx, "requesting target halt...");
1428
1429         if ((retval = target->type->halt(target)) != ERROR_OK)
1430         {
1431                 switch (retval)
1432                 {
1433                         case ERROR_TARGET_ALREADY_HALTED:
1434                                 command_print(cmd_ctx, "target already halted");
1435                                 break;
1436                         case ERROR_TARGET_TIMEOUT:
1437                                 command_print(cmd_ctx, "target timed out... shutting down");
1438                                 exit(-1);
1439                         default:
1440                                 command_print(cmd_ctx, "unknown error... shutting down");
1441                                 exit(-1);
1442                 }
1443         }
1444
1445         return ERROR_OK;
1446
1447 }
1448
1449 /* what to do on daemon startup */
1450 int handle_daemon_startup_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1451 {
1452         if (argc == 1)
1453         {
1454                 if (strcmp(args[0], "attach") == 0)
1455                 {
1456                         startup_mode = DAEMON_ATTACH;
1457                         return ERROR_OK;
1458                 }
1459                 else if (strcmp(args[0], "reset") == 0)
1460                 {
1461                         startup_mode = DAEMON_RESET;
1462                         return ERROR_OK;
1463                 }
1464         }
1465
1466         WARNING("invalid daemon_startup configuration directive: %s", args[0]);
1467         return ERROR_OK;
1468
1469 }
1470
1471 int handle_soft_reset_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1472 {
1473         target_t *target = get_current_target(cmd_ctx);
1474         int retval;
1475
1476         command_print(cmd_ctx, "requesting target halt and executing a soft reset");
1477
1478         if ((retval = target->type->soft_reset_halt(target)) != ERROR_OK)
1479         {
1480                 switch (retval)
1481                 {
1482                         case ERROR_TARGET_TIMEOUT:
1483                                 command_print(cmd_ctx, "target timed out... shutting down");
1484                                 exit(-1);
1485                         default:
1486                                 command_print(cmd_ctx, "unknown error... shutting down");
1487                                 exit(-1);
1488                 }
1489         }
1490
1491         return ERROR_OK;
1492 }
1493
1494 int handle_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1495 {
1496         target_t *target = get_current_target(cmd_ctx);
1497         enum target_reset_mode reset_mode = RESET_RUN;
1498
1499         DEBUG("-");
1500
1501         if (argc >= 1)
1502         {
1503                 if (strcmp("run", args[0]) == 0)
1504                         reset_mode = RESET_RUN;
1505                 else if (strcmp("halt", args[0]) == 0)
1506                         reset_mode = RESET_HALT;
1507                 else if (strcmp("init", args[0]) == 0)
1508                         reset_mode = RESET_INIT;
1509                 else if (strcmp("run_and_halt", args[0]) == 0)
1510                 {
1511                         reset_mode = RESET_RUN_AND_HALT;
1512                         if (argc >= 2)
1513                         {
1514                                 target->run_and_halt_time = strtoul(args[1], NULL, 0);
1515                         }
1516                 }
1517                 else if (strcmp("run_and_init", args[0]) == 0)
1518                 {
1519                         reset_mode = RESET_RUN_AND_INIT;
1520                         if (argc >= 2)
1521                         {
1522                                 target->run_and_halt_time = strtoul(args[1], NULL, 0);
1523                         }
1524                 }
1525                 else
1526                 {
1527                         command_print(cmd_ctx, "usage: reset ['run', 'halt', 'init', 'run_and_halt', 'run_and_init]");
1528                         return ERROR_OK;
1529                 }
1530                 target->reset_mode = reset_mode;
1531         }
1532
1533         target_process_reset(cmd_ctx);
1534
1535         return ERROR_OK;
1536 }
1537
1538 int handle_resume_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1539 {
1540         int retval;
1541         target_t *target = get_current_target(cmd_ctx);
1542
1543         DEBUG("-");
1544
1545         if (argc == 0)
1546                 retval = target->type->resume(target, 1, 0, 1, 0); /* current pc, addr = 0, handle breakpoints, not debugging */
1547         else if (argc == 1)
1548                 retval = target->type->resume(target, 0, strtoul(args[0], NULL, 0), 1, 0); /* addr = args[0], handle breakpoints, not debugging */
1549         else
1550         {
1551                 command_print(cmd_ctx, "usage: resume [address]");
1552                 return ERROR_OK;
1553         }
1554
1555         if (retval != ERROR_OK)
1556         {
1557                 switch (retval)
1558                 {
1559                         case ERROR_TARGET_NOT_HALTED:
1560                                 command_print(cmd_ctx, "target not halted");
1561                                 break;
1562                         default:
1563                                 command_print(cmd_ctx, "unknown error... shutting down");
1564                                 exit(-1);
1565                 }
1566         }
1567
1568         return ERROR_OK;
1569 }
1570
1571 int handle_step_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1572 {
1573         target_t *target = get_current_target(cmd_ctx);
1574
1575         DEBUG("-");
1576
1577         if (argc == 0)
1578                 target->type->step(target, 1, 0, 1); /* current pc, addr = 0, handle breakpoints */
1579
1580         if (argc == 1)
1581                 target->type->step(target, 0, strtoul(args[0], NULL, 0), 1); /* addr = args[0], handle breakpoints */
1582
1583         return ERROR_OK;
1584 }
1585
1586 int handle_md_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1587 {
1588         int count = 1;
1589         int size = 4;
1590         u32 address = 0;
1591         int i;
1592
1593         char output[128];
1594         int output_len;
1595
1596         int retval;
1597
1598         u8 *buffer;
1599         target_t *target = get_current_target(cmd_ctx);
1600
1601         if (argc < 1)
1602                 return ERROR_OK;
1603
1604         if (argc == 2)
1605                 count = strtoul(args[1], NULL, 0);
1606
1607         address = strtoul(args[0], NULL, 0);
1608
1609
1610         switch (cmd[2])
1611         {
1612                 case 'w':
1613                         size = 4;
1614                         break;
1615                 case 'h':
1616                         size = 2;
1617                         break;
1618                 case 'b':
1619                         size = 1;
1620                         break;
1621                 default:
1622                         return ERROR_OK;
1623         }
1624
1625         buffer = calloc(count, size);
1626         if ((retval  = target->type->read_memory(target, address, size, count, buffer)) != ERROR_OK)
1627         {
1628                 switch (retval)
1629                 {
1630                         case ERROR_TARGET_UNALIGNED_ACCESS:
1631                                 command_print(cmd_ctx, "error: address not aligned");
1632                                 break;
1633                         case ERROR_TARGET_NOT_HALTED:
1634                                 command_print(cmd_ctx, "error: target must be halted for memory accesses");
1635                                 break;
1636                         case ERROR_TARGET_DATA_ABORT:
1637                                 command_print(cmd_ctx, "error: access caused data abort, system possibly corrupted");
1638                                 break;
1639                         default:
1640                                 command_print(cmd_ctx, "error: unknown error");
1641                                 break;
1642                 }
1643                 return ERROR_OK;
1644         }
1645
1646         output_len = 0;
1647
1648         for (i = 0; i < count; i++)
1649         {
1650                 if (i%8 == 0)
1651                         output_len += snprintf(output + output_len, 128 - output_len, "0x%8.8x: ", address + (i*size));
1652
1653                 switch (size)
1654                 {
1655                         case 4:
1656                                 output_len += snprintf(output + output_len, 128 - output_len, "%8.8x ", target_buffer_get_u32(target, &buffer[i*4]));
1657                                 break;
1658                         case 2:
1659                                 output_len += snprintf(output + output_len, 128 - output_len, "%4.4x ", target_buffer_get_u16(target, &buffer[i*2]));
1660                                 break;
1661                         case 1:
1662                                 output_len += snprintf(output + output_len, 128 - output_len, "%2.2x ", buffer[i*1]);
1663                                 break;
1664                 }
1665
1666                 if ((i%8 == 7) || (i == count - 1))
1667                 {
1668                         command_print(cmd_ctx, output);
1669                         output_len = 0;
1670                 }
1671         }
1672
1673         free(buffer);
1674
1675         return ERROR_OK;
1676 }
1677
1678 int handle_mw_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1679 {
1680         u32 address = 0;
1681         u32 value = 0;
1682         int retval;
1683         target_t *target = get_current_target(cmd_ctx);
1684         u8 value_buf[4];
1685
1686         if (argc < 2)
1687                 return ERROR_OK;
1688
1689         address = strtoul(args[0], NULL, 0);
1690         value = strtoul(args[1], NULL, 0);
1691
1692         switch (cmd[2])
1693         {
1694                 case 'w':
1695                         target_buffer_set_u32(target, value_buf, value);
1696                         retval = target->type->write_memory(target, address, 4, 1, value_buf);
1697                         break;
1698                 case 'h':
1699                         target_buffer_set_u16(target, value_buf, value);
1700                         retval = target->type->write_memory(target, address, 2, 1, value_buf);
1701                         break;
1702                 case 'b':
1703                         value_buf[0] = value;
1704                         retval = target->type->write_memory(target, address, 1, 1, value_buf);
1705                         break;
1706                 default:
1707                         return ERROR_OK;
1708         }
1709
1710         switch (retval)
1711         {
1712                 case ERROR_TARGET_UNALIGNED_ACCESS:
1713                         command_print(cmd_ctx, "error: address not aligned");
1714                         break;
1715                 case ERROR_TARGET_DATA_ABORT:
1716                         command_print(cmd_ctx, "error: access caused data abort, system possibly corrupted");
1717                         break;
1718                 case ERROR_TARGET_NOT_HALTED:
1719                         command_print(cmd_ctx, "error: target must be halted for memory accesses");
1720                         break;
1721                 case ERROR_OK:
1722                         break;
1723                 default:
1724                         command_print(cmd_ctx, "error: unknown error");
1725                         break;
1726         }
1727
1728         return ERROR_OK;
1729
1730 }
1731
1732 int handle_load_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1733 {
1734         u8 *buffer;
1735         u32 buf_cnt;
1736         u32 image_size;
1737         int i;
1738         int retval;
1739
1740         image_t image;
1741
1742         duration_t duration;
1743         char *duration_text;
1744
1745         target_t *target = get_current_target(cmd_ctx);
1746
1747         if (argc < 1)
1748         {
1749                 command_print(cmd_ctx, "usage: load_image <filename> [address] [type]");
1750                 return ERROR_OK;
1751         }
1752
1753         /* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */
1754         if (argc >= 2)
1755         {
1756                 image.base_address_set = 1;
1757                 image.base_address = strtoul(args[1], NULL, 0);
1758         }
1759         else
1760         {
1761                 image.base_address_set = 0;
1762         }
1763
1764         image.start_address_set = 0;
1765
1766         duration_start_measure(&duration);
1767
1768         if (image_open(&image, args[0], (argc >= 3) ? args[2] : NULL) != ERROR_OK)
1769         {
1770                 command_print(cmd_ctx, "load_image error: %s", image.error_str);
1771                 return ERROR_OK;
1772         }
1773
1774         image_size = 0x0;
1775         for (i = 0; i < image.num_sections; i++)
1776         {
1777                 buffer = malloc(image.sections[i].size);
1778                 if ((retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt)) != ERROR_OK)
1779                 {
1780                         ERROR("image_read_section failed with error code: %i", retval);
1781                         command_print(cmd_ctx, "image reading failed, download aborted");
1782                         free(buffer);
1783                         image_close(&image);
1784                         return ERROR_OK;
1785                 }
1786                 target_write_buffer(target, image.sections[i].base_address, buf_cnt, buffer);
1787                 image_size += buf_cnt;
1788                 command_print(cmd_ctx, "%u byte written at address 0x%8.8x", buf_cnt, image.sections[i].base_address);
1789
1790                 free(buffer);
1791         }
1792
1793         duration_stop_measure(&duration, &duration_text);
1794         command_print(cmd_ctx, "downloaded %u byte in %s", image_size, duration_text);
1795         free(duration_text);
1796
1797         image_close(&image);
1798
1799         return ERROR_OK;
1800
1801 }
1802
1803 int handle_dump_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1804 {
1805         fileio_t fileio;
1806
1807         u32 address;
1808         u32 size;
1809         u8 buffer[560];
1810
1811         duration_t duration;
1812         char *duration_text;
1813
1814         target_t *target = get_current_target(cmd_ctx);
1815
1816         if (argc != 3)
1817         {
1818                 command_print(cmd_ctx, "usage: dump_image <filename> <address> <size>");
1819                 return ERROR_OK;
1820         }
1821
1822         address = strtoul(args[1], NULL, 0);
1823         size = strtoul(args[2], NULL, 0);
1824
1825         if ((address & 3) || (size & 3))
1826         {
1827                 command_print(cmd_ctx, "only 32-bit aligned address and size are supported");
1828                 return ERROR_OK;
1829         }
1830
1831         if (fileio_open(&fileio, args[0], FILEIO_WRITE, FILEIO_BINARY) != ERROR_OK)
1832         {
1833                 command_print(cmd_ctx, "dump_image error: %s", fileio.error_str);
1834                 return ERROR_OK;
1835         }
1836
1837         duration_start_measure(&duration);
1838
1839         while (size > 0)
1840         {
1841                 u32 size_written;
1842                 u32 this_run_size = (size > 560) ? 560 : size;
1843
1844                 target->type->read_memory(target, address, 4, this_run_size / 4, buffer);
1845                 fileio_write(&fileio, this_run_size, buffer, &size_written);
1846
1847                 size -= this_run_size;
1848                 address += this_run_size;
1849         }
1850
1851         fileio_close(&fileio);
1852
1853         duration_stop_measure(&duration, &duration_text);
1854         command_print(cmd_ctx, "dumped %"PRIi64" byte in %s", fileio.size, duration_text);
1855         free(duration_text);
1856
1857         return ERROR_OK;
1858
1859 }
1860
1861 int handle_verify_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1862 {
1863         u8 *buffer;
1864         u32 buf_cnt;
1865         u32 image_size;
1866         int i;
1867         int retval;
1868         u32 checksum = 0;
1869         u32 mem_checksum = 0;
1870
1871         image_t image;
1872
1873         duration_t duration;
1874         char *duration_text;
1875
1876         target_t *target = get_current_target(cmd_ctx);
1877
1878         if (argc < 1)
1879         {
1880                 command_print(cmd_ctx, "usage: verify_image <file> [offset] [type]");
1881                 return ERROR_OK;
1882         }
1883
1884         if (!target)
1885         {
1886                 ERROR("no target selected");
1887                 return ERROR_OK;
1888         }
1889
1890         duration_start_measure(&duration);
1891
1892         if (argc >= 2)
1893         {
1894                 image.base_address_set = 1;
1895                 image.base_address = strtoul(args[1], NULL, 0);
1896         }
1897         else
1898         {
1899                 image.base_address_set = 0;
1900                 image.base_address = 0x0;
1901         }
1902
1903         image.start_address_set = 0;
1904
1905         if (image_open(&image, args[0], (argc == 3) ? args[2] : NULL) != ERROR_OK)
1906         {
1907                 command_print(cmd_ctx, "verify_image error: %s", image.error_str);
1908                 return ERROR_OK;
1909         }
1910
1911         image_size = 0x0;
1912         for (i = 0; i < image.num_sections; i++)
1913         {
1914                 buffer = malloc(image.sections[i].size);
1915                 if ((retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt)) != ERROR_OK)
1916                 {
1917                         ERROR("image_read_section failed with error code: %i", retval);
1918                         command_print(cmd_ctx, "image reading failed, verify aborted");
1919                         free(buffer);
1920                         image_close(&image);
1921                         return ERROR_OK;
1922                 }
1923
1924                 /* calculate checksum of image */
1925                 image_calculate_checksum( buffer, buf_cnt, &checksum );
1926
1927                 retval = target_checksum_memory(target, image.sections[i].base_address, buf_cnt, &mem_checksum);
1928
1929                 if( retval != ERROR_OK )
1930                 {
1931                         command_print(cmd_ctx, "image verify failed, verify aborted");
1932                         free(buffer);
1933                         image_close(&image);
1934                         return ERROR_OK;
1935                 }
1936
1937                 if( checksum != mem_checksum )
1938                 {
1939                         /* failed crc checksum, fall back to a binary compare */
1940                         u8 *data;
1941
1942                         command_print(cmd_ctx, "image verify checksum failed - attempting binary compare");
1943
1944                         data = (u8*)malloc(buf_cnt);
1945
1946                         /* Can we use 32bit word accesses? */
1947                         int size = 1;
1948                         int count = buf_cnt;
1949                         if ((count % 4) == 0)
1950                         {
1951                                 size *= 4;
1952                                 count /= 4;
1953                         }
1954                         retval = target->type->read_memory(target, image.sections[i].base_address, size, count, data);
1955
1956                         if (retval == ERROR_OK)
1957                         {
1958                                 int t;
1959                                 for (t = 0; t < buf_cnt; t++)
1960                                 {
1961                                         if (data[t] != buffer[t])
1962                                         {
1963                                                 command_print(cmd_ctx, "Verify operation failed address 0x%08x. Was 0x%02x instead of 0x%02x\n", t + image.sections[i].base_address, data[t], buffer[t]);
1964                                                 free(data);
1965                                                 free(buffer);
1966                                                 image_close(&image);
1967                                                 return ERROR_OK;
1968                                         }
1969                                 }
1970                         }
1971
1972                         free(data);
1973                 }
1974
1975                 free(buffer);
1976                 image_size += buf_cnt;
1977         }
1978
1979         duration_stop_measure(&duration, &duration_text);
1980         command_print(cmd_ctx, "verified %u bytes in %s", image_size, duration_text);
1981         free(duration_text);
1982
1983         image_close(&image);
1984
1985         return ERROR_OK;
1986 }
1987
1988 int handle_bp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1989 {
1990         int retval;
1991         target_t *target = get_current_target(cmd_ctx);
1992
1993         if (argc == 0)
1994         {
1995                 breakpoint_t *breakpoint = target->breakpoints;
1996
1997                 while (breakpoint)
1998                 {
1999                         if (breakpoint->type == BKPT_SOFT)
2000                         {
2001                                 char* buf = buf_to_str(breakpoint->orig_instr, breakpoint->length, 16);
2002                                 command_print(cmd_ctx, "0x%8.8x, 0x%x, %i, 0x%s", breakpoint->address, breakpoint->length, breakpoint->set, buf);
2003                                 free(buf);
2004                         }
2005                         else
2006                         {
2007                                 command_print(cmd_ctx, "0x%8.8x, 0x%x, %i", breakpoint->address, breakpoint->length, breakpoint->set);
2008                         }
2009                         breakpoint = breakpoint->next;
2010                 }
2011         }
2012         else if (argc >= 2)
2013         {
2014                 int hw = BKPT_SOFT;
2015                 u32 length = 0;
2016
2017                 length = strtoul(args[1], NULL, 0);
2018
2019                 if (argc >= 3)
2020                         if (strcmp(args[2], "hw") == 0)
2021                                 hw = BKPT_HARD;
2022
2023                 if ((retval = breakpoint_add(target, strtoul(args[0], NULL, 0), length, hw)) != ERROR_OK)
2024                 {
2025                         switch (retval)
2026                         {
2027                                 case ERROR_TARGET_NOT_HALTED:
2028                                         command_print(cmd_ctx, "target must be halted to set breakpoints");
2029                                         break;
2030                                 case ERROR_TARGET_RESOURCE_NOT_AVAILABLE:
2031                                         command_print(cmd_ctx, "no more breakpoints available");
2032                                         break;
2033                                 default:
2034                                         command_print(cmd_ctx, "unknown error, breakpoint not set");
2035                                         break;
2036                         }
2037                 }
2038                 else
2039                 {
2040                         command_print(cmd_ctx, "breakpoint added at address 0x%8.8x", strtoul(args[0], NULL, 0));
2041                 }
2042         }
2043         else
2044         {
2045                 command_print(cmd_ctx, "usage: bp <address> <length> ['hw']");
2046         }
2047
2048         return ERROR_OK;
2049 }
2050
2051 int handle_rbp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2052 {
2053         target_t *target = get_current_target(cmd_ctx);
2054
2055         if (argc > 0)
2056                 breakpoint_remove(target, strtoul(args[0], NULL, 0));
2057
2058         return ERROR_OK;
2059 }
2060
2061 int handle_wp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2062 {
2063         target_t *target = get_current_target(cmd_ctx);
2064         int retval;
2065
2066         if (argc == 0)
2067         {
2068                 watchpoint_t *watchpoint = target->watchpoints;
2069
2070                 while (watchpoint)
2071                 {
2072                         command_print(cmd_ctx, "address: 0x%8.8x, mask: 0x%8.8x, r/w/a: %i, value: 0x%8.8x, mask: 0x%8.8x", watchpoint->address, watchpoint->length, watchpoint->rw, watchpoint->value, watchpoint->mask);
2073                         watchpoint = watchpoint->next;
2074                 }
2075         }
2076         else if (argc >= 2)
2077         {
2078                 enum watchpoint_rw type = WPT_ACCESS;
2079                 u32 data_value = 0x0;
2080                 u32 data_mask = 0xffffffff;
2081
2082                 if (argc >= 3)
2083                 {
2084                         switch(args[2][0])
2085                         {
2086                                 case 'r':
2087                                         type = WPT_READ;
2088                                         break;
2089                                 case 'w':
2090                                         type = WPT_WRITE;
2091                                         break;
2092                                 case 'a':
2093                                         type = WPT_ACCESS;
2094                                         break;
2095                                 default:
2096                                         command_print(cmd_ctx, "usage: wp <address> <length> [r/w/a] [value] [mask]");
2097                                         return ERROR_OK;
2098                         }
2099                 }
2100                 if (argc >= 4)
2101                 {
2102                         data_value = strtoul(args[3], NULL, 0);
2103                 }
2104                 if (argc >= 5)
2105                 {
2106                         data_mask = strtoul(args[4], NULL, 0);
2107                 }
2108
2109                 if ((retval = watchpoint_add(target, strtoul(args[0], NULL, 0),
2110                                 strtoul(args[1], NULL, 0), type, data_value, data_mask)) != ERROR_OK)
2111                 {
2112                         switch (retval)
2113                         {
2114                                 case ERROR_TARGET_NOT_HALTED:
2115                                         command_print(cmd_ctx, "target must be halted to set watchpoints");
2116                                         break;
2117                                 case ERROR_TARGET_RESOURCE_NOT_AVAILABLE:
2118                                         command_print(cmd_ctx, "no more watchpoints available");
2119                                         break;
2120                                 default:
2121                                         command_print(cmd_ctx, "unknown error, watchpoint not set");
2122                                         break;
2123                         }
2124                 }
2125         }
2126         else
2127         {
2128                 command_print(cmd_ctx, "usage: wp <address> <length> [r/w/a] [value] [mask]");
2129         }
2130
2131         return ERROR_OK;
2132 }
2133
2134 int handle_rwp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2135 {
2136         target_t *target = get_current_target(cmd_ctx);
2137
2138         if (argc > 0)
2139                 watchpoint_remove(target, strtoul(args[0], NULL, 0));
2140
2141         return ERROR_OK;
2142 }
2143
2144