git.sur5r.net Git - openocd/blob - src/target/target.c

   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
1069                                 (*last_target_p)->type->target_command(cmd_ctx, cmd, args, argc, *last_target_p);
1070
1071                                 found = 1;
1072                                 break;
1073                         }
1074                 }
1075         }
1076
1077         /* no matching target found */
1078         if (!found)
1079         {
1080                 ERROR("target '%s' not found", args[0]);
1081                 exit(-1);
1082         }
1083
1084         return ERROR_OK;
1085 }
1086
1087 /* usage: target_script <target#> <event> <script_file> */
1088 int handle_target_script_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1089 {
1090         target_t *target = NULL;
1091
1092         if (argc < 3)
1093         {
1094                 ERROR("incomplete target_script command");
1095                 exit(-1);
1096         }
1097
1098         target = get_target_by_num(strtoul(args[0], NULL, 0));
1099
1100         if (!target)
1101         {
1102                 ERROR("target number '%s' not defined", args[0]);
1103                 exit(-1);
1104         }
1105
1106         if (strcmp(args[1], "reset") == 0)
1107         {
1108                 if (target->reset_script)
1109                         free(target->reset_script);
1110                 target->reset_script = strdup(args[2]);
1111         }
1112         else if (strcmp(args[1], "post_halt") == 0)
1113         {
1114                 if (target->post_halt_script)
1115                         free(target->post_halt_script);
1116                 target->post_halt_script = strdup(args[2]);
1117         }
1118         else if (strcmp(args[1], "pre_resume") == 0)
1119         {
1120                 if (target->pre_resume_script)
1121                         free(target->pre_resume_script);
1122                 target->pre_resume_script = strdup(args[2]);
1123         }
1124         else if (strcmp(args[1], "gdb_program_config") == 0)
1125         {
1126                 if (target->gdb_program_script)
1127                         free(target->gdb_program_script);
1128                 target->gdb_program_script = strdup(args[2]);
1129         }
1130         else
1131         {
1132                 ERROR("unknown event type: '%s", args[1]);
1133                 exit(-1);
1134         }
1135
1136         return ERROR_OK;
1137 }
1138
1139 int handle_run_and_halt_time_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1140 {
1141         target_t *target = NULL;
1142
1143         if (argc < 2)
1144         {
1145                 ERROR("incomplete run_and_halt_time command");
1146                 exit(-1);
1147         }
1148
1149         target = get_target_by_num(strtoul(args[0], NULL, 0));
1150
1151         if (!target)
1152         {
1153                 ERROR("target number '%s' not defined", args[0]);
1154                 exit(-1);
1155         }
1156
1157         target->run_and_halt_time = strtoul(args[1], NULL, 0);
1158
1159         return ERROR_OK;
1160 }
1161
1162 int handle_working_area_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1163 {
1164         target_t *target = NULL;
1165
1166         if (argc < 4)
1167         {
1168                 ERROR("incomplete working_area command. usage: working_area <target#> <address> <size> <'backup'|'nobackup'>");
1169                 exit(-1);
1170         }
1171
1172         target = get_target_by_num(strtoul(args[0], NULL, 0));
1173
1174         if (!target)
1175         {
1176                 ERROR("target number '%s' not defined", args[0]);
1177                 exit(-1);
1178         }
1179
1180         target->working_area = strtoul(args[1], NULL, 0);
1181         target->working_area_size = strtoul(args[2], NULL, 0);
1182
1183         if (strcmp(args[3], "backup") == 0)
1184         {
1185                 target->backup_working_area = 1;
1186         }
1187         else if (strcmp(args[3], "nobackup") == 0)
1188         {
1189                 target->backup_working_area = 0;
1190         }
1191         else
1192         {
1193                 ERROR("unrecognized <backup|nobackup> argument (%s)", args[3]);
1194                 exit(-1);
1195         }
1196
1197         return ERROR_OK;
1198 }
1199
1200
1201 /* process target state changes */
1202 int handle_target(void *priv)
1203 {
1204         int retval;
1205         target_t *target = targets;
1206
1207         while (target)
1208         {
1209                 /* only poll if target isn't already halted */
1210                 if (target->state != TARGET_HALTED)
1211                 {
1212                         if (target_continous_poll)
1213                                 if ((retval = target->type->poll(target)) < 0)
1214                                 {
1215                                         ERROR("couldn't poll target. It's due for a reset.");
1216                                 }
1217                 }
1218
1219                 target = target->next;
1220         }
1221
1222         return ERROR_OK;
1223 }
1224
1225 int handle_reg_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1226 {
1227         target_t *target;
1228         reg_t *reg = NULL;
1229         int count = 0;
1230         char *value;
1231
1232         DEBUG("-");
1233
1234         target = get_current_target(cmd_ctx);
1235
1236         /* list all available registers for the current target */
1237         if (argc == 0)
1238         {
1239                 reg_cache_t *cache = target->reg_cache;
1240
1241                 count = 0;
1242                 while(cache)
1243                 {
1244                         int i;
1245                         for (i = 0; i < cache->num_regs; i++)
1246                         {
1247                                 value = buf_to_str(cache->reg_list[i].value, cache->reg_list[i].size, 16);
1248                                 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);
1249                                 free(value);
1250                         }
1251                         cache = cache->next;
1252                 }
1253
1254                 return ERROR_OK;
1255         }
1256
1257         /* access a single register by its ordinal number */
1258         if ((args[0][0] >= '0') && (args[0][0] <= '9'))
1259         {
1260                 int num = strtoul(args[0], NULL, 0);
1261                 reg_cache_t *cache = target->reg_cache;
1262
1263                 count = 0;
1264                 while(cache)
1265                 {
1266                         int i;
1267                         for (i = 0; i < cache->num_regs; i++)
1268                         {
1269                                 if (count++ == num)
1270                                 {
1271                                         reg = &cache->reg_list[i];
1272                                         break;
1273                                 }
1274                         }
1275                         if (reg)
1276                                 break;
1277                         cache = cache->next;
1278                 }
1279
1280                 if (!reg)
1281                 {
1282                         command_print(cmd_ctx, "%i is out of bounds, the current target has only %i registers (0 - %i)", num, count, count - 1);
1283                         return ERROR_OK;
1284                 }
1285         } else /* access a single register by its name */
1286         {
1287                 reg = register_get_by_name(target->reg_cache, args[0], 1);
1288
1289                 if (!reg)
1290                 {
1291                         command_print(cmd_ctx, "register %s not found in current target", args[0]);
1292                         return ERROR_OK;
1293                 }
1294         }
1295
1296         /* display a register */
1297         if ((argc == 1) || ((argc == 2) && !((args[1][0] >= '0') && (args[1][0] <= '9'))))
1298         {
1299                 if ((argc == 2) && (strcmp(args[1], "force") == 0))
1300                         reg->valid = 0;
1301
1302                 if (reg->valid == 0)
1303                 {
1304                         reg_arch_type_t *arch_type = register_get_arch_type(reg->arch_type);
1305                         if (arch_type == NULL)
1306                         {
1307                                 ERROR("BUG: encountered unregistered arch type");
1308                                 return ERROR_OK;
1309                         }
1310                         arch_type->get(reg);
1311                 }
1312                 value = buf_to_str(reg->value, reg->size, 16);
1313                 command_print(cmd_ctx, "%s (/%i): 0x%s", reg->name, reg->size, value);
1314                 free(value);
1315                 return ERROR_OK;
1316         }
1317
1318         /* set register value */
1319         if (argc == 2)
1320         {
1321                 u8 *buf = malloc(CEIL(reg->size, 8));
1322                 str_to_buf(args[1], strlen(args[1]), buf, reg->size, 0);
1323
1324                 reg_arch_type_t *arch_type = register_get_arch_type(reg->arch_type);
1325                 if (arch_type == NULL)
1326                 {
1327                         ERROR("BUG: encountered unregistered arch type");
1328                         return ERROR_OK;
1329                 }
1330
1331                 arch_type->set(reg, buf);
1332
1333                 value = buf_to_str(reg->value, reg->size, 16);
1334                 command_print(cmd_ctx, "%s (/%i): 0x%s", reg->name, reg->size, value);
1335                 free(value);
1336
1337                 free(buf);
1338
1339                 return ERROR_OK;
1340         }
1341
1342         command_print(cmd_ctx, "usage: reg <#|name> [value]");
1343
1344         return ERROR_OK;
1345 }
1346
1347 int handle_poll_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1348 {
1349         target_t *target = get_current_target(cmd_ctx);
1350         char buffer[512];
1351
1352         if (argc == 0)
1353         {
1354                 command_print(cmd_ctx, "target state: %s", target_state_strings[target->type->poll(target)]);
1355                 if (target->state == TARGET_HALTED)
1356                 {
1357                         target->type->arch_state(target, buffer, 512);
1358                         buffer[511] = 0;
1359                         command_print(cmd_ctx, "%s", buffer);
1360                 }
1361         }
1362         else
1363         {
1364                 if (strcmp(args[0], "on") == 0)
1365                 {
1366                         target_continous_poll = 1;
1367                 }
1368                 else if (strcmp(args[0], "off") == 0)
1369                 {
1370                         target_continous_poll = 0;
1371                 }
1372         }
1373
1374
1375         return ERROR_OK;
1376 }
1377
1378 int handle_wait_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1379 {
1380         target_t *target = get_current_target(cmd_ctx);
1381         struct timeval timeout, now;
1382
1383         gettimeofday(&timeout, NULL);
1384         if (!argc)
1385                 timeval_add_time(&timeout, 5, 0);
1386         else {
1387                 char *end;
1388
1389                 timeval_add_time(&timeout, strtoul(args[0], &end, 0), 0);
1390                 if (*end) {
1391                         command_print(cmd_ctx, "usage: wait_halt [seconds]");
1392                         return ERROR_OK;
1393                 }
1394         }
1395
1396         command_print(cmd_ctx, "waiting for target halted...");
1397
1398         while(target->type->poll(target))
1399         {
1400                 if (target->state == TARGET_HALTED)
1401                 {
1402                         command_print(cmd_ctx, "target halted");
1403                         break;
1404                 }
1405                 target_call_timer_callbacks();
1406
1407                 gettimeofday(&now, NULL);
1408                 if ((now.tv_sec >= timeout.tv_sec) && (now.tv_usec >= timeout.tv_usec))
1409                 {
1410                         command_print(cmd_ctx, "timed out while waiting for target halt");
1411                         ERROR("timed out while waiting for target halt");
1412                         break;
1413                 }
1414         }
1415
1416         return ERROR_OK;
1417 }
1418
1419 int handle_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1420 {
1421         int retval;
1422         target_t *target = get_current_target(cmd_ctx);
1423
1424         DEBUG("-");
1425
1426         command_print(cmd_ctx, "requesting target halt...");
1427
1428         if ((retval = target->type->halt(target)) != ERROR_OK)
1429         {
1430                 switch (retval)
1431                 {
1432                         case ERROR_TARGET_ALREADY_HALTED:
1433                                 command_print(cmd_ctx, "target already halted");
1434                                 break;
1435                         case ERROR_TARGET_TIMEOUT:
1436                                 command_print(cmd_ctx, "target timed out... shutting down");
1437                                 exit(-1);
1438                         default:
1439                                 command_print(cmd_ctx, "unknown error... shutting down");
1440                                 exit(-1);
1441                 }
1442         }
1443
1444         return ERROR_OK;
1445
1446 }
1447
1448 /* what to do on daemon startup */
1449 int handle_daemon_startup_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1450 {
1451         if (argc == 1)
1452         {
1453                 if (strcmp(args[0], "attach") == 0)
1454                 {
1455                         startup_mode = DAEMON_ATTACH;
1456                         return ERROR_OK;
1457                 }
1458                 else if (strcmp(args[0], "reset") == 0)
1459                 {
1460                         startup_mode = DAEMON_RESET;
1461                         return ERROR_OK;
1462                 }
1463         }
1464
1465         WARNING("invalid daemon_startup configuration directive: %s", args[0]);
1466         return ERROR_OK;
1467
1468 }
1469
1470 int handle_soft_reset_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1471 {
1472         target_t *target = get_current_target(cmd_ctx);
1473         int retval;
1474
1475         command_print(cmd_ctx, "requesting target halt and executing a soft reset");
1476
1477         if ((retval = target->type->soft_reset_halt(target)) != ERROR_OK)
1478         {
1479                 switch (retval)
1480                 {
1481                         case ERROR_TARGET_TIMEOUT:
1482                                 command_print(cmd_ctx, "target timed out... shutting down");
1483                                 exit(-1);
1484                         default:
1485                                 command_print(cmd_ctx, "unknown error... shutting down");
1486                                 exit(-1);
1487                 }
1488         }
1489
1490         return ERROR_OK;
1491 }
1492
1493 int handle_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1494 {
1495         target_t *target = get_current_target(cmd_ctx);
1496         enum target_reset_mode reset_mode = RESET_RUN;
1497
1498         DEBUG("-");
1499
1500         if (argc >= 1)
1501         {
1502                 if (strcmp("run", args[0]) == 0)
1503                         reset_mode = RESET_RUN;
1504                 else if (strcmp("halt", args[0]) == 0)
1505                         reset_mode = RESET_HALT;
1506                 else if (strcmp("init", args[0]) == 0)
1507                         reset_mode = RESET_INIT;
1508                 else if (strcmp("run_and_halt", args[0]) == 0)
1509                 {
1510                         reset_mode = RESET_RUN_AND_HALT;
1511                         if (argc >= 2)
1512                         {
1513                                 target->run_and_halt_time = strtoul(args[1], NULL, 0);
1514                         }
1515                 }
1516                 else if (strcmp("run_and_init", args[0]) == 0)
1517                 {
1518                         reset_mode = RESET_RUN_AND_INIT;
1519                         if (argc >= 2)
1520                         {
1521                                 target->run_and_halt_time = strtoul(args[1], NULL, 0);
1522                         }
1523                 }
1524                 else
1525                 {
1526                         command_print(cmd_ctx, "usage: reset ['run', 'halt', 'init', 'run_and_halt', 'run_and_init]");
1527                         return ERROR_OK;
1528                 }
1529                 target->reset_mode = reset_mode;
1530         }
1531
1532         target_process_reset(cmd_ctx);
1533
1534         return ERROR_OK;
1535 }
1536
1537 int handle_resume_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1538 {
1539         int retval;
1540         target_t *target = get_current_target(cmd_ctx);
1541
1542         DEBUG("-");
1543
1544         if (argc == 0)
1545                 retval = target->type->resume(target, 1, 0, 1, 0); /* current pc, addr = 0, handle breakpoints, not debugging */
1546         else if (argc == 1)
1547                 retval = target->type->resume(target, 0, strtoul(args[0], NULL, 0), 1, 0); /* addr = args[0], handle breakpoints, not debugging */
1548         else
1549         {
1550                 command_print(cmd_ctx, "usage: resume [address]");
1551                 return ERROR_OK;
1552         }
1553
1554         if (retval != ERROR_OK)
1555         {
1556                 switch (retval)
1557                 {
1558                         case ERROR_TARGET_NOT_HALTED:
1559                                 command_print(cmd_ctx, "target not halted");
1560                                 break;
1561                         default:
1562                                 command_print(cmd_ctx, "unknown error... shutting down");
1563                                 exit(-1);
1564                 }
1565         }
1566
1567         return ERROR_OK;
1568 }
1569
1570 int handle_step_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1571 {
1572         target_t *target = get_current_target(cmd_ctx);
1573
1574         DEBUG("-");
1575
1576         if (argc == 0)
1577                 target->type->step(target, 1, 0, 1); /* current pc, addr = 0, handle breakpoints */
1578
1579         if (argc == 1)
1580                 target->type->step(target, 0, strtoul(args[0], NULL, 0), 1); /* addr = args[0], handle breakpoints */
1581
1582         return ERROR_OK;
1583 }
1584
1585 int handle_md_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1586 {
1587         int count = 1;
1588         int size = 4;
1589         u32 address = 0;
1590         int i;
1591
1592         char output[128];
1593         int output_len;
1594
1595         int retval;
1596
1597         u8 *buffer;
1598         target_t *target = get_current_target(cmd_ctx);
1599
1600         if (argc < 1)
1601                 return ERROR_OK;
1602
1603         if (argc == 2)
1604                 count = strtoul(args[1], NULL, 0);
1605
1606         address = strtoul(args[0], NULL, 0);
1607
1608
1609         switch (cmd[2])
1610         {
1611                 case 'w':
1612                         size = 4;
1613                         break;
1614                 case 'h':
1615                         size = 2;
1616                         break;
1617                 case 'b':
1618                         size = 1;
1619                         break;
1620                 default:
1621                         return ERROR_OK;
1622         }
1623
1624         buffer = calloc(count, size);
1625         if ((retval  = target->type->read_memory(target, address, size, count, buffer)) != ERROR_OK)
1626         {
1627                 switch (retval)
1628                 {
1629                         case ERROR_TARGET_UNALIGNED_ACCESS:
1630                                 command_print(cmd_ctx, "error: address not aligned");
1631                                 break;
1632                         case ERROR_TARGET_NOT_HALTED:
1633                                 command_print(cmd_ctx, "error: target must be halted for memory accesses");
1634                                 break;
1635                         case ERROR_TARGET_DATA_ABORT:
1636                                 command_print(cmd_ctx, "error: access caused data abort, system possibly corrupted");
1637                                 break;
1638                         default:
1639                                 command_print(cmd_ctx, "error: unknown error");
1640                                 break;
1641                 }
1642                 return ERROR_OK;
1643         }
1644
1645         output_len = 0;
1646
1647         for (i = 0; i < count; i++)
1648         {
1649                 if (i%8 == 0)
1650                         output_len += snprintf(output + output_len, 128 - output_len, "0x%8.8x: ", address + (i*size));
1651
1652                 switch (size)
1653                 {
1654                         case 4:
1655                                 output_len += snprintf(output + output_len, 128 - output_len, "%8.8x ", target_buffer_get_u32(target, &buffer[i*4]));
1656                                 break;
1657                         case 2:
1658                                 output_len += snprintf(output + output_len, 128 - output_len, "%4.4x ", target_buffer_get_u16(target, &buffer[i*2]));
1659                                 break;
1660                         case 1:
1661                                 output_len += snprintf(output + output_len, 128 - output_len, "%2.2x ", buffer[i*1]);
1662                                 break;
1663                 }
1664
1665                 if ((i%8 == 7) || (i == count - 1))
1666                 {
1667                         command_print(cmd_ctx, output);
1668                         output_len = 0;
1669                 }
1670         }
1671
1672         free(buffer);
1673
1674         return ERROR_OK;
1675 }
1676
1677 int handle_mw_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1678 {
1679         u32 address = 0;
1680         u32 value = 0;
1681         int retval;
1682         target_t *target = get_current_target(cmd_ctx);
1683         u8 value_buf[4];
1684
1685         if (argc < 2)
1686                 return ERROR_OK;
1687
1688         address = strtoul(args[0], NULL, 0);
1689         value = strtoul(args[1], NULL, 0);
1690
1691         switch (cmd[2])
1692         {
1693                 case 'w':
1694                         target_buffer_set_u32(target, value_buf, value);
1695                         retval = target->type->write_memory(target, address, 4, 1, value_buf);
1696                         break;
1697                 case 'h':
1698                         target_buffer_set_u16(target, value_buf, value);
1699                         retval = target->type->write_memory(target, address, 2, 1, value_buf);
1700                         break;
1701                 case 'b':
1702                         value_buf[0] = value;
1703                         retval = target->type->write_memory(target, address, 1, 1, value_buf);
1704                         break;
1705                 default:
1706                         return ERROR_OK;
1707         }
1708
1709         switch (retval)
1710         {
1711                 case ERROR_TARGET_UNALIGNED_ACCESS:
1712                         command_print(cmd_ctx, "error: address not aligned");
1713                         break;
1714                 case ERROR_TARGET_DATA_ABORT:
1715                         command_print(cmd_ctx, "error: access caused data abort, system possibly corrupted");
1716                         break;
1717                 case ERROR_TARGET_NOT_HALTED:
1718                         command_print(cmd_ctx, "error: target must be halted for memory accesses");
1719                         break;
1720                 case ERROR_OK:
1721                         break;
1722                 default:
1723                         command_print(cmd_ctx, "error: unknown error");
1724                         break;
1725         }
1726
1727         return ERROR_OK;
1728
1729 }
1730
1731 int handle_load_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1732 {
1733         u8 *buffer;
1734         u32 buf_cnt;
1735         u32 image_size;
1736         int i;
1737         int retval;
1738
1739         image_t image;
1740
1741         duration_t duration;
1742         char *duration_text;
1743
1744         target_t *target = get_current_target(cmd_ctx);
1745
1746         if (argc < 1)
1747         {
1748                 command_print(cmd_ctx, "usage: load_image <filename> [address] [type]");
1749                 return ERROR_OK;
1750         }
1751
1752         /* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */
1753         if (argc >= 2)
1754         {
1755                 image.base_address_set = 1;
1756                 image.base_address = strtoul(args[1], NULL, 0);
1757         }
1758         else
1759         {
1760                 image.base_address_set = 0;
1761         }
1762
1763         image.start_address_set = 0;
1764
1765         duration_start_measure(&duration);
1766
1767         if (image_open(&image, args[0], (argc >= 3) ? args[2] : NULL) != ERROR_OK)
1768         {
1769                 command_print(cmd_ctx, "load_image error: %s", image.error_str);
1770                 return ERROR_OK;
1771         }
1772
1773         image_size = 0x0;
1774         for (i = 0; i < image.num_sections; i++)
1775         {
1776                 buffer = malloc(image.sections[i].size);
1777                 if ((retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt)) != ERROR_OK)
1778                 {
1779                         ERROR("image_read_section failed with error code: %i", retval);
1780                         command_print(cmd_ctx, "image reading failed, download aborted");
1781                         free(buffer);
1782                         image_close(&image);
1783                         return ERROR_OK;
1784                 }
1785                 target_write_buffer(target, image.sections[i].base_address, buf_cnt, buffer);
1786                 image_size += buf_cnt;
1787                 command_print(cmd_ctx, "%u byte written at address 0x%8.8x", buf_cnt, image.sections[i].base_address);
1788
1789                 free(buffer);
1790         }
1791
1792         duration_stop_measure(&duration, &duration_text);
1793         command_print(cmd_ctx, "downloaded %u byte in %s", image_size, duration_text);
1794         free(duration_text);
1795
1796         image_close(&image);
1797
1798         return ERROR_OK;
1799
1800 }
1801
1802 int handle_dump_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1803 {
1804         fileio_t fileio;
1805
1806         u32 address;
1807         u32 size;
1808         u8 buffer[560];
1809
1810         duration_t duration;
1811         char *duration_text;
1812
1813         target_t *target = get_current_target(cmd_ctx);
1814
1815         if (argc != 3)
1816         {
1817                 command_print(cmd_ctx, "usage: dump_image <filename> <address> <size>");
1818                 return ERROR_OK;
1819         }
1820
1821         address = strtoul(args[1], NULL, 0);
1822         size = strtoul(args[2], NULL, 0);
1823
1824         if ((address & 3) || (size & 3))
1825         {
1826                 command_print(cmd_ctx, "only 32-bit aligned address and size are supported");
1827                 return ERROR_OK;
1828         }
1829
1830         if (fileio_open(&fileio, args[0], FILEIO_WRITE, FILEIO_BINARY) != ERROR_OK)
1831         {
1832                 command_print(cmd_ctx, "dump_image error: %s", fileio.error_str);
1833                 return ERROR_OK;
1834         }
1835
1836         duration_start_measure(&duration);
1837
1838         while (size > 0)
1839         {
1840                 u32 size_written;
1841                 u32 this_run_size = (size > 560) ? 560 : size;
1842
1843                 target->type->read_memory(target, address, 4, this_run_size / 4, buffer);
1844                 fileio_write(&fileio, this_run_size, buffer, &size_written);
1845
1846                 size -= this_run_size;
1847                 address += this_run_size;
1848         }
1849
1850         fileio_close(&fileio);
1851
1852         duration_stop_measure(&duration, &duration_text);
1853         command_print(cmd_ctx, "dumped %"PRIi64" byte in %s", fileio.size, duration_text);
1854         free(duration_text);
1855
1856         return ERROR_OK;
1857
1858 }
1859
1860 int handle_verify_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1861 {
1862         u8 *buffer;
1863         u32 buf_cnt;
1864         u32 image_size;
1865         int i;
1866         int retval;
1867         u32 checksum = 0;
1868         u32 mem_checksum = 0;
1869
1870         image_t image;
1871
1872         duration_t duration;
1873         char *duration_text;
1874
1875         target_t *target = get_current_target(cmd_ctx);
1876
1877         if (argc < 1)
1878         {
1879                 command_print(cmd_ctx, "usage: verify_image <file> [offset] [type]");
1880                 return ERROR_OK;
1881         }
1882
1883         if (!target)
1884         {
1885                 ERROR("no target selected");
1886                 return ERROR_OK;
1887         }
1888
1889         duration_start_measure(&duration);
1890
1891         if (argc >= 2)
1892         {
1893                 image.base_address_set = 1;
1894                 image.base_address = strtoul(args[1], NULL, 0);
1895         }
1896         else
1897         {
1898                 image.base_address_set = 0;
1899                 image.base_address = 0x0;
1900         }
1901
1902         image.start_address_set = 0;
1903
1904         if (image_open(&image, args[0], (argc == 3) ? args[2] : NULL) != ERROR_OK)
1905         {
1906                 command_print(cmd_ctx, "verify_image error: %s", image.error_str);
1907                 return ERROR_OK;
1908         }
1909
1910         image_size = 0x0;
1911         for (i = 0; i < image.num_sections; i++)
1912         {
1913                 buffer = malloc(image.sections[i].size);
1914                 if ((retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt)) != ERROR_OK)
1915                 {
1916                         ERROR("image_read_section failed with error code: %i", retval);
1917                         command_print(cmd_ctx, "image reading failed, verify aborted");
1918                         free(buffer);
1919                         image_close(&image);
1920                         return ERROR_OK;
1921                 }
1922
1923                 /* calculate checksum of image */
1924                 image_calculate_checksum( buffer, buf_cnt, &checksum );
1925
1926                 retval = target_checksum_memory(target, image.sections[i].base_address, buf_cnt, &mem_checksum);
1927
1928                 if( retval != ERROR_OK )
1929                 {
1930                         command_print(cmd_ctx, "image verify failed, verify aborted");
1931                         free(buffer);
1932                         image_close(&image);
1933                         return ERROR_OK;
1934                 }
1935
1936                 if( checksum != mem_checksum )
1937                 {
1938                         /* failed crc checksum, fall back to a binary compare */
1939                         u8 *data;
1940
1941                         command_print(cmd_ctx, "image verify checksum failed - attempting binary compare");
1942
1943                         data = (u8*)malloc(buf_cnt);
1944
1945                         /* Can we use 32bit word accesses? */
1946                         int size = 1;
1947                         int count = buf_cnt;
1948                         if ((count % 4) == 0)
1949                         {
1950                                 size *= 4;
1951                                 count /= 4;
1952                         }
1953                         retval = target->type->read_memory(target, image.sections[i].base_address, size, count, data);
1954
1955                         if (retval == ERROR_OK)
1956                         {
1957                                 int t;
1958                                 for (t = 0; t < buf_cnt; t++)
1959                                 {
1960                                         if (data[t] != buffer[t])
1961                                         {
1962                                                 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]);
1963                                                 free(data);
1964                                                 free(buffer);
1965                                                 image_close(&image);
1966                                                 return ERROR_OK;
1967                                         }
1968                                 }
1969                         }
1970
1971                         free(data);
1972                 }
1973
1974                 free(buffer);
1975                 image_size += buf_cnt;
1976         }
1977
1978         duration_stop_measure(&duration, &duration_text);
1979         command_print(cmd_ctx, "verified %u bytes in %s", image_size, duration_text);
1980         free(duration_text);
1981
1982         image_close(&image);
1983
1984         return ERROR_OK;
1985 }
1986
1987 int handle_bp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1988 {
1989         int retval;
1990         target_t *target = get_current_target(cmd_ctx);
1991
1992         if (argc == 0)
1993         {
1994                 breakpoint_t *breakpoint = target->breakpoints;
1995
1996                 while (breakpoint)
1997                 {
1998                         if (breakpoint->type == BKPT_SOFT)
1999                         {
2000                                 char* buf = buf_to_str(breakpoint->orig_instr, breakpoint->length, 16);
2001                                 command_print(cmd_ctx, "0x%8.8x, 0x%x, %i, 0x%s", breakpoint->address, breakpoint->length, breakpoint->set, buf);
2002                                 free(buf);
2003                         }
2004                         else
2005                         {
2006                                 command_print(cmd_ctx, "0x%8.8x, 0x%x, %i", breakpoint->address, breakpoint->length, breakpoint->set);
2007                         }
2008                         breakpoint = breakpoint->next;
2009                 }
2010         }
2011         else if (argc >= 2)
2012         {
2013                 int hw = BKPT_SOFT;
2014                 u32 length = 0;
2015
2016                 length = strtoul(args[1], NULL, 0);
2017
2018                 if (argc >= 3)
2019                         if (strcmp(args[2], "hw") == 0)
2020                                 hw = BKPT_HARD;
2021
2022                 if ((retval = breakpoint_add(target, strtoul(args[0], NULL, 0), length, hw)) != ERROR_OK)
2023                 {
2024                         switch (retval)
2025                         {
2026                                 case ERROR_TARGET_NOT_HALTED:
2027                                         command_print(cmd_ctx, "target must be halted to set breakpoints");
2028                                         break;
2029                                 case ERROR_TARGET_RESOURCE_NOT_AVAILABLE:
2030                                         command_print(cmd_ctx, "no more breakpoints available");
2031                                         break;
2032                                 default:
2033                                         command_print(cmd_ctx, "unknown error, breakpoint not set");
2034                                         break;
2035                         }
2036                 }
2037                 else
2038                 {
2039                         command_print(cmd_ctx, "breakpoint added at address 0x%8.8x", strtoul(args[0], NULL, 0));
2040                 }
2041         }
2042         else
2043         {
2044                 command_print(cmd_ctx, "usage: bp <address> <length> ['hw']");
2045         }
2046
2047         return ERROR_OK;
2048 }
2049
2050 int handle_rbp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2051 {
2052         target_t *target = get_current_target(cmd_ctx);
2053
2054         if (argc > 0)
2055                 breakpoint_remove(target, strtoul(args[0], NULL, 0));
2056
2057         return ERROR_OK;
2058 }
2059
2060 int handle_wp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2061 {
2062         target_t *target = get_current_target(cmd_ctx);
2063         int retval;
2064
2065         if (argc == 0)
2066         {
2067                 watchpoint_t *watchpoint = target->watchpoints;
2068
2069                 while (watchpoint)
2070                 {
2071                         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);
2072                         watchpoint = watchpoint->next;
2073                 }
2074         }
2075         else if (argc >= 2)
2076         {
2077                 enum watchpoint_rw type = WPT_ACCESS;
2078                 u32 data_value = 0x0;
2079                 u32 data_mask = 0xffffffff;
2080
2081                 if (argc >= 3)
2082                 {
2083                         switch(args[2][0])
2084                         {
2085                                 case 'r':
2086                                         type = WPT_READ;
2087                                         break;
2088                                 case 'w':
2089                                         type = WPT_WRITE;
2090                                         break;
2091                                 case 'a':
2092                                         type = WPT_ACCESS;
2093                                         break;
2094                                 default:
2095                                         command_print(cmd_ctx, "usage: wp <address> <length> [r/w/a] [value] [mask]");
2096                                         return ERROR_OK;
2097                         }
2098                 }
2099                 if (argc >= 4)
2100                 {
2101                         data_value = strtoul(args[3], NULL, 0);
2102                 }
2103                 if (argc >= 5)
2104                 {
2105                         data_mask = strtoul(args[4], NULL, 0);
2106                 }
2107
2108                 if ((retval = watchpoint_add(target, strtoul(args[0], NULL, 0),
2109                                 strtoul(args[1], NULL, 0), type, data_value, data_mask)) != ERROR_OK)
2110                 {
2111                         switch (retval)
2112                         {
2113                                 case ERROR_TARGET_NOT_HALTED:
2114                                         command_print(cmd_ctx, "target must be halted to set watchpoints");
2115                                         break;
2116                                 case ERROR_TARGET_RESOURCE_NOT_AVAILABLE:
2117                                         command_print(cmd_ctx, "no more watchpoints available");
2118                                         break;
2119                                 default:
2120                                         command_print(cmd_ctx, "unknown error, watchpoint not set");
2121                                         break;
2122                         }
2123                 }
2124         }
2125         else
2126         {
2127                 command_print(cmd_ctx, "usage: wp <address> <length> [r/w/a] [value] [mask]");
2128         }
2129
2130         return ERROR_OK;
2131 }
2132
2133 int handle_rwp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2134 {
2135         target_t *target = get_current_target(cmd_ctx);
2136
2137         if (argc > 0)
2138                 watchpoint_remove(target, strtoul(args[0], NULL, 0));
2139
2140         return ERROR_OK;
2141 }
2142
2143