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