git.gag.com Git - fw/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
  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                 return ERROR_OK;
 657         }
 658
 659         /* handle unaligned head bytes */
 660         if (address % 4)
 661         {
 662                 int unaligned = 4 - (address % 4);
 663
 664                 if ((retval = target->type->write_memory(target, address, 1, unaligned, buffer)) != ERROR_OK)
 665                         return retval;
 666
 667                 buffer += unaligned;
 668                 address += unaligned;
 669                 size -= unaligned;
 670         }
 671
 672         /* handle aligned words */
 673         if (size >= 4)
 674         {
 675                 int aligned = size - (size % 4);
 676
 677                 /* use bulk writes above a certain limit. This may have to be changed */
 678                 if (aligned > 128)
 679                 {
 680                         if ((retval = target->type->bulk_write_memory(target, address, aligned / 4, buffer)) != ERROR_OK)
 681                                 return retval;
 682                 }
 683                 else
 684                 {
 685                         if ((retval = target->type->write_memory(target, address, 4, aligned / 4, buffer)) != ERROR_OK)
 686                                 return retval;
 687                 }
 688
 689                 buffer += aligned;
 690                 address += aligned;
 691                 size -= aligned;
 692         }
 693
 694         /* handle tail writes of less than 4 bytes */
 695         if (size > 0)
 696         {
 697                 if ((retval = target->type->write_memory(target, address, 1, size, buffer)) != ERROR_OK)
 698                         return retval;
 699         }
 700
 701         return ERROR_OK;
 702 }
 703
 704 int target_read_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer)
 705 {
 706         int retval;
 707
 708         DEBUG("reading buffer of %i byte at 0x%8.8x", size, address);
 709
 710         /* handle reads of less than 4 byte */
 711         if (size < 4)
 712         {
 713                 if ((retval = target->type->read_memory(target, address, 1, size, buffer)) != ERROR_OK)
 714                         return retval;
 715                 return ERROR_OK;
 716         }
 717
 718         /* handle unaligned head bytes */
 719         if (address % 4)
 720         {
 721                 int unaligned = 4 - (address % 4);
 722
 723                 if ((retval = target->type->read_memory(target, address, 1, unaligned, buffer)) != ERROR_OK)
 724                         return retval;
 725
 726                 buffer += unaligned;
 727                 address += unaligned;
 728                 size -= unaligned;
 729         }
 730
 731         /* handle aligned words */
 732         if (size >= 4)
 733         {
 734                 int aligned = size - (size % 4);
 735
 736                 if ((retval = target->type->read_memory(target, address, 4, aligned / 4, buffer)) != ERROR_OK)
 737                         return retval;
 738
 739                 buffer += aligned;
 740                 address += aligned;
 741                 size -= aligned;
 742         }
 743
 744         /* handle tail writes of less than 4 bytes */
 745         if (size > 0)
 746         {
 747                 if ((retval = target->type->read_memory(target, address, 1, size, buffer)) != ERROR_OK)
 748                         return retval;
 749         }
 750
 751         return ERROR_OK;
 752 }
 753
 754 int target_read_u32(struct target_s *target, u32 address, u32 *value)
 755 {
 756         u8 value_buf[4];
 757
 758         int retval = target->type->read_memory(target, address, 4, 1, value_buf);
 759
 760         if (retval == ERROR_OK)
 761         {
 762                 *value = target_buffer_get_u32(target, value_buf);
 763                 DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, *value);
 764         }
 765         else
 766         {
 767                 *value = 0x0;
 768                 DEBUG("address: 0x%8.8x failed", address);
 769         }
 770
 771         return retval;
 772 }
 773
 774 int target_read_u16(struct target_s *target, u32 address, u16 *value)
 775 {
 776         u8 value_buf[2];
 777
 778         int retval = target->type->read_memory(target, address, 2, 1, value_buf);
 779
 780         if (retval == ERROR_OK)
 781         {
 782                 *value = target_buffer_get_u16(target, value_buf);
 783                 DEBUG("address: 0x%8.8x, value: 0x%4.4x", address, *value);
 784         }
 785         else
 786         {
 787                 *value = 0x0;
 788                 DEBUG("address: 0x%8.8x failed", address);
 789         }
 790
 791         return retval;
 792 }
 793
 794 int target_read_u8(struct target_s *target, u32 address, u8 *value)
 795 {
 796         int retval = target->type->read_memory(target, address, 1, 1, value);
 797
 798         if (retval == ERROR_OK)
 799         {
 800                 DEBUG("address: 0x%8.8x, value: 0x%2.2x", address, *value);
 801         }
 802         else
 803         {
 804                 *value = 0x0;
 805                 DEBUG("address: 0x%8.8x failed", address);
 806         }
 807
 808         return retval;
 809 }
 810
 811 int target_write_u32(struct target_s *target, u32 address, u32 value)
 812 {
 813         int retval;
 814         u8 value_buf[4];
 815
 816         DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, value);
 817
 818         target_buffer_set_u32(target, value_buf, value);
 819         if ((retval = target->type->write_memory(target, address, 4, 1, value_buf)) != ERROR_OK)
 820         {
 821                 DEBUG("failed: %i", retval);
 822         }
 823
 824         return retval;
 825 }
 826
 827 int target_write_u16(struct target_s *target, u32 address, u16 value)
 828 {
 829         int retval;
 830         u8 value_buf[2];
 831
 832         DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, value);
 833
 834         target_buffer_set_u16(target, value_buf, value);
 835         if ((retval = target->type->write_memory(target, address, 2, 1, value_buf)) != ERROR_OK)
 836         {
 837                 DEBUG("failed: %i", retval);
 838         }
 839
 840         return retval;
 841 }
 842
 843 int target_write_u8(struct target_s *target, u32 address, u8 value)
 844 {
 845         int retval;
 846
 847         DEBUG("address: 0x%8.8x, value: 0x%2.2x", address, value);
 848
 849         if ((retval = target->type->read_memory(target, address, 1, 1, &value)) != ERROR_OK)
 850         {
 851                 DEBUG("failed: %i", retval);
 852         }
 853
 854         return retval;
 855 }
 856
 857 int target_register_user_commands(struct command_context_s *cmd_ctx)
 858 {
 859         register_command(cmd_ctx,  NULL, "reg", handle_reg_command, COMMAND_EXEC, NULL);
 860         register_command(cmd_ctx,  NULL, "poll", handle_poll_command, COMMAND_EXEC, "poll target state");
 861         register_command(cmd_ctx,  NULL, "wait_halt", handle_wait_halt_command, COMMAND_EXEC, "wait for target halt [time (s)]");
 862         register_command(cmd_ctx,  NULL, "halt", handle_halt_command, COMMAND_EXEC, "halt target");
 863         register_command(cmd_ctx,  NULL, "resume", handle_resume_command, COMMAND_EXEC, "resume target [addr]");
 864         register_command(cmd_ctx,  NULL, "step", handle_step_command, COMMAND_EXEC, "step one instruction");
 865         register_command(cmd_ctx,  NULL, "reset", handle_reset_command, COMMAND_EXEC, "reset target [run|halt|init|run_and_halt|run_and_init]");
 866         register_command(cmd_ctx,  NULL, "soft_reset_halt", handle_soft_reset_halt_command, COMMAND_EXEC, "halt the target and do a soft reset");
 867
 868         register_command(cmd_ctx,  NULL, "mdw", handle_md_command, COMMAND_EXEC, "display memory words <addr> [count]");
 869         register_command(cmd_ctx,  NULL, "mdh", handle_md_command, COMMAND_EXEC, "display memory half-words <addr> [count]");
 870         register_command(cmd_ctx,  NULL, "mdb", handle_md_command, COMMAND_EXEC, "display memory bytes <addr> [count]");
 871
 872         register_command(cmd_ctx,  NULL, "mww", handle_mw_command, COMMAND_EXEC, "write memory word <addr> <value>");
 873         register_command(cmd_ctx,  NULL, "mwh", handle_mw_command, COMMAND_EXEC, "write memory half-word <addr> <value>");
 874         register_command(cmd_ctx,  NULL, "mwb", handle_mw_command, COMMAND_EXEC, "write memory byte <addr> <value>");
 875
 876         register_command(cmd_ctx,  NULL, "bp", handle_bp_command, COMMAND_EXEC, "set breakpoint <address> <length> [hw]");
 877         register_command(cmd_ctx,  NULL, "rbp", handle_rbp_command, COMMAND_EXEC, "remove breakpoint <adress>");
 878         register_command(cmd_ctx,  NULL, "wp", handle_wp_command, COMMAND_EXEC, "set watchpoint <address> <length> <r/w/a> [value] [mask]");
 879         register_command(cmd_ctx,  NULL, "rwp", handle_rwp_command, COMMAND_EXEC, "remove watchpoint <adress>");
 880
 881         register_command(cmd_ctx,  NULL, "load_image", handle_load_image_command, COMMAND_EXEC, "load_image <file> <address> ['bin'|'ihex'|'elf']");
 882         register_command(cmd_ctx,  NULL, "dump_image", handle_dump_image_command, COMMAND_EXEC, "dump_image <file> <address> <size>");
 883         register_command(cmd_ctx,  NULL, "load_binary", handle_load_image_command, COMMAND_EXEC, "[DEPRECATED] load_binary <file> <address>");
 884         register_command(cmd_ctx,  NULL, "dump_binary", handle_dump_image_command, COMMAND_EXEC, "[DEPRECATED] dump_binary <file> <address> <size>");
 885
 886         return ERROR_OK;
 887 }
 888
 889 int handle_targets_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 890 {
 891         target_t *target = targets;
 892         int count = 0;
 893
 894         if (argc == 1)
 895         {
 896                 int num = strtoul(args[0], NULL, 0);
 897
 898                 while (target)
 899                 {
 900                         count++;
 901                         target = target->next;
 902                 }
 903
 904                 if (num < count)
 905                         cmd_ctx->current_target = num;
 906                 else
 907                         command_print(cmd_ctx, "%i is out of bounds, only %i targets are configured", num, count);
 908
 909                 return ERROR_OK;
 910         }
 911
 912         while (target)
 913         {
 914                 command_print(cmd_ctx, "%i: %s (%s), state: %s", count++, target->type->name, target_endianess_strings[target->endianness], target_state_strings[target->state]);
 915                 target = target->next;
 916         }
 917
 918         return ERROR_OK;
 919 }
 920
 921 int handle_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 922 {
 923         int i;
 924         int found = 0;
 925
 926         if (argc < 3)
 927         {
 928                 ERROR("target command requires at least three arguments: <type> <endianess> <reset_mode>");
 929                 exit(-1);
 930         }
 931
 932         /* search for the specified target */
 933         if (args[0] && (args[0][0] != 0))
 934         {
 935                 for (i = 0; target_types[i]; i++)
 936                 {
 937                         if (strcmp(args[0], target_types[i]->name) == 0)
 938                         {
 939                                 target_t **last_target_p = &targets;
 940
 941                                 /* register target specific commands */
 942                                 if (target_types[i]->register_commands(cmd_ctx) != ERROR_OK)
 943                                 {
 944                                         ERROR("couldn't register '%s' commands", args[0]);
 945                                         exit(-1);
 946                                 }
 947
 948                                 if (*last_target_p)
 949                                 {
 950                                         while ((*last_target_p)->next)
 951                                                 last_target_p = &((*last_target_p)->next);
 952                                         last_target_p = &((*last_target_p)->next);
 953                                 }
 954
 955                                 *last_target_p = malloc(sizeof(target_t));
 956
 957                                 (*last_target_p)->type = target_types[i];
 958
 959                                 if (strcmp(args[1], "big") == 0)
 960                                         (*last_target_p)->endianness = TARGET_BIG_ENDIAN;
 961                                 else if (strcmp(args[1], "little") == 0)
 962                                         (*last_target_p)->endianness = TARGET_LITTLE_ENDIAN;
 963                                 else
 964                                 {
 965                                         ERROR("endianness must be either 'little' or 'big', not '%s'", args[1]);
 966                                         exit(-1);
 967                                 }
 968
 969                                 /* what to do on a target reset */
 970                                 if (strcmp(args[2], "reset_halt") == 0)
 971                                         (*last_target_p)->reset_mode = RESET_HALT;
 972                                 else if (strcmp(args[2], "reset_run") == 0)
 973                                         (*last_target_p)->reset_mode = RESET_RUN;
 974                                 else if (strcmp(args[2], "reset_init") == 0)
 975                                         (*last_target_p)->reset_mode = RESET_INIT;
 976                                 else if (strcmp(args[2], "run_and_halt") == 0)
 977                                         (*last_target_p)->reset_mode = RESET_RUN_AND_HALT;
 978                                 else if (strcmp(args[2], "run_and_init") == 0)
 979                                         (*last_target_p)->reset_mode = RESET_RUN_AND_INIT;
 980                                 else
 981                                 {
 982                                         ERROR("unknown target startup mode %s", args[2]);
 983                                         exit(-1);
 984                                 }
 985                                 (*last_target_p)->run_and_halt_time = 1000; /* default 1s */
 986
 987                                 (*last_target_p)->reset_script = NULL;
 988                                 (*last_target_p)->post_halt_script = NULL;
 989                                 (*last_target_p)->pre_resume_script = NULL;
 990
 991                                 (*last_target_p)->working_area = 0x0;
 992                                 (*last_target_p)->working_area_size = 0x0;
 993                                 (*last_target_p)->working_areas = NULL;
 994                                 (*last_target_p)->backup_working_area = 0;
 995
 996                                 (*last_target_p)->state = TARGET_UNKNOWN;
 997                                 (*last_target_p)->reg_cache = NULL;
 998                                 (*last_target_p)->breakpoints = NULL;
 999                                 (*last_target_p)->watchpoints = NULL;
1000                                 (*last_target_p)->next = NULL;
1001                                 (*last_target_p)->arch_info = NULL;
1002
1003                                 (*last_target_p)->type->target_command(cmd_ctx, cmd, args, argc, *last_target_p);
1004
1005                                 found = 1;
1006                                 break;
1007                         }
1008                 }
1009         }
1010
1011         /* no matching target found */
1012         if (!found)
1013         {
1014                 ERROR("target '%s' not found", args[0]);
1015                 exit(-1);
1016         }
1017
1018         return ERROR_OK;
1019 }
1020
1021 /* usage: target_script <target#> <event> <script_file> */
1022 int handle_target_script_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1023 {
1024         target_t *target = NULL;
1025
1026         if (argc < 3)
1027         {
1028                 ERROR("incomplete target_script command");
1029                 exit(-1);
1030         }
1031
1032         target = get_target_by_num(strtoul(args[0], NULL, 0));
1033
1034         if (!target)
1035         {
1036                 ERROR("target number '%s' not defined", args[0]);
1037                 exit(-1);
1038         }
1039
1040         if (strcmp(args[1], "reset") == 0)
1041         {
1042                 if (target->reset_script)
1043                         free(target->reset_script);
1044                 target->reset_script = strdup(args[2]);
1045         }
1046         else if (strcmp(args[1], "post_halt") == 0)
1047         {
1048                 if (target->post_halt_script)
1049                         free(target->post_halt_script);
1050                 target->post_halt_script = strdup(args[2]);
1051         }
1052         else if (strcmp(args[1], "pre_resume") == 0)
1053         {
1054                 if (target->pre_resume_script)
1055                         free(target->pre_resume_script);
1056                 target->pre_resume_script = strdup(args[2]);
1057         }
1058         else
1059         {
1060                 ERROR("unknown event type: '%s", args[1]);
1061                 exit(-1);
1062         }
1063
1064         return ERROR_OK;
1065 }
1066
1067 int handle_run_and_halt_time_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1068 {
1069         target_t *target = NULL;
1070
1071         if (argc < 2)
1072         {
1073                 ERROR("incomplete run_and_halt_time command");
1074                 exit(-1);
1075         }
1076
1077         target = get_target_by_num(strtoul(args[0], NULL, 0));
1078
1079         if (!target)
1080         {
1081                 ERROR("target number '%s' not defined", args[0]);
1082                 exit(-1);
1083         }
1084
1085         target->run_and_halt_time = strtoul(args[1], NULL, 0);
1086
1087         return ERROR_OK;
1088 }
1089
1090 int handle_working_area_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1091 {
1092         target_t *target = NULL;
1093
1094         if (argc < 4)
1095         {
1096                 ERROR("incomplete working_area command. usage: working_area <target#> <address> <size> <'backup'|'nobackup'>");
1097                 exit(-1);
1098         }
1099
1100         target = get_target_by_num(strtoul(args[0], NULL, 0));
1101
1102         if (!target)
1103         {
1104                 ERROR("target number '%s' not defined", args[0]);
1105                 exit(-1);
1106         }
1107
1108         target->working_area = strtoul(args[1], NULL, 0);
1109         target->working_area_size = strtoul(args[2], NULL, 0);
1110
1111         if (strcmp(args[3], "backup") == 0)
1112         {
1113                 target->backup_working_area = 1;
1114         }
1115         else if (strcmp(args[3], "nobackup") == 0)
1116         {
1117                 target->backup_working_area = 0;
1118         }
1119         else
1120         {
1121                 ERROR("unrecognized <backup|nobackup> argument (%s)", args[3]);
1122                 exit(-1);
1123         }
1124
1125         return ERROR_OK;
1126 }
1127
1128
1129 /* process target state changes */
1130 int handle_target(void *priv)
1131 {
1132         int retval;
1133         target_t *target = targets;
1134
1135         while (target)
1136         {
1137                 /* only poll if target isn't already halted */
1138                 if (target->state != TARGET_HALTED)
1139                 {
1140                         if (target_continous_poll)
1141                                 if ((retval = target->type->poll(target)) < 0)
1142                                 {
1143                                         ERROR("couldn't poll target, exiting");
1144                                         exit(-1);
1145                                 }
1146                 }
1147
1148                 target = target->next;
1149         }
1150
1151         return ERROR_OK;
1152 }
1153
1154 int handle_reg_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1155 {
1156         target_t *target;
1157         reg_t *reg = NULL;
1158         int count = 0;
1159         char *value;
1160
1161         DEBUG("-");
1162
1163         target = get_current_target(cmd_ctx);
1164
1165         /* list all available registers for the current target */
1166         if (argc == 0)
1167         {
1168                 reg_cache_t *cache = target->reg_cache;
1169
1170                 count = 0;
1171                 while(cache)
1172                 {
1173                         int i;
1174                         for (i = 0; i < cache->num_regs; i++)
1175                         {
1176                                 value = buf_to_str(cache->reg_list[i].value, cache->reg_list[i].size, 16);
1177                                 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);
1178                                 free(value);
1179                         }
1180                         cache = cache->next;
1181                 }
1182
1183                 return ERROR_OK;
1184         }
1185
1186         /* access a single register by its ordinal number */
1187         if ((args[0][0] >= '0') && (args[0][0] <= '9'))
1188         {
1189                 int num = strtoul(args[0], NULL, 0);
1190                 reg_cache_t *cache = target->reg_cache;
1191
1192                 count = 0;
1193                 while(cache)
1194                 {
1195                         int i;
1196                         for (i = 0; i < cache->num_regs; i++)
1197                         {
1198                                 if (count++ == num)
1199                                 {
1200                                         reg = &cache->reg_list[i];
1201                                         break;
1202                                 }
1203                         }
1204                         if (reg)
1205                                 break;
1206                         cache = cache->next;
1207                 }
1208
1209                 if (!reg)
1210                 {
1211                         command_print(cmd_ctx, "%i is out of bounds, the current target has only %i registers (0 - %i)", num, count, count - 1);
1212                         return ERROR_OK;
1213                 }
1214         } else /* access a single register by its name */
1215         {
1216                 reg = register_get_by_name(target->reg_cache, args[0], 1);
1217
1218                 if (!reg)
1219                 {
1220                         command_print(cmd_ctx, "register %s not found in current target", args[0]);
1221                         return ERROR_OK;
1222                 }
1223         }
1224
1225         /* display a register */
1226         if ((argc == 1) || ((argc == 2) && !((args[1][0] >= '0') && (args[1][0] <= '9'))))
1227         {
1228                 if ((argc == 2) && (strcmp(args[1], "force") == 0))
1229                         reg->valid = 0;
1230
1231                 if (reg->valid == 0)
1232                 {
1233                         reg_arch_type_t *arch_type = register_get_arch_type(reg->arch_type);
1234                         if (arch_type == NULL)
1235                         {
1236                                 ERROR("BUG: encountered unregistered arch type");
1237                                 return ERROR_OK;
1238                         }
1239                         arch_type->get(reg);
1240                 }
1241                 value = buf_to_str(reg->value, reg->size, 16);
1242                 command_print(cmd_ctx, "%s (/%i): 0x%s", reg->name, reg->size, value);
1243                 free(value);
1244                 return ERROR_OK;
1245         }
1246
1247         /* set register value */
1248         if (argc == 2)
1249         {
1250                 u8 *buf = malloc(CEIL(reg->size, 8));
1251                 str_to_buf(args[1], strlen(args[1]), buf, reg->size, 0);
1252
1253                 reg_arch_type_t *arch_type = register_get_arch_type(reg->arch_type);
1254                 if (arch_type == NULL)
1255                 {
1256                         ERROR("BUG: encountered unregistered arch type");
1257                         return ERROR_OK;
1258                 }
1259
1260                 arch_type->set(reg, buf);
1261
1262                 value = buf_to_str(reg->value, reg->size, 16);
1263                 command_print(cmd_ctx, "%s (/%i): 0x%s", reg->name, reg->size, value);
1264                 free(value);
1265
1266                 free(buf);
1267
1268                 return ERROR_OK;
1269         }
1270
1271         command_print(cmd_ctx, "usage: reg <#|name> [value]");
1272
1273         return ERROR_OK;
1274 }
1275
1276 int handle_poll_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1277 {
1278         target_t *target = get_current_target(cmd_ctx);
1279         char buffer[512];
1280
1281         if (argc == 0)
1282         {
1283                 command_print(cmd_ctx, "target state: %s", target_state_strings[target->type->poll(target)]);
1284                 if (target->state == TARGET_HALTED)
1285                 {
1286                         target->type->arch_state(target, buffer, 512);
1287                         buffer[511] = 0;
1288                         command_print(cmd_ctx, "%s", buffer);
1289                 }
1290         }
1291         else
1292         {
1293                 if (strcmp(args[0], "on") == 0)
1294                 {
1295                         target_continous_poll = 1;
1296                 }
1297                 else if (strcmp(args[0], "off") == 0)
1298                 {
1299                         target_continous_poll = 0;
1300                 }
1301         }
1302
1303
1304         return ERROR_OK;
1305 }
1306
1307 int handle_wait_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1308 {
1309         target_t *target = get_current_target(cmd_ctx);
1310         struct timeval timeout, now;
1311
1312         gettimeofday(&timeout, NULL);
1313         if (!argc)
1314                 timeval_add_time(&timeout, 5, 0);
1315         else {
1316                 char *end;
1317
1318                 timeval_add_time(&timeout, strtoul(args[0], &end, 0), 0);
1319                 if (*end) {
1320                         command_print(cmd_ctx, "usage: wait_halt [seconds]");
1321                         return ERROR_OK;
1322                 }
1323         }
1324
1325         command_print(cmd_ctx, "waiting for target halted...");
1326
1327         while(target->type->poll(target))
1328         {
1329                 if (target->state == TARGET_HALTED)
1330                 {
1331                         command_print(cmd_ctx, "target halted");
1332                         break;
1333                 }
1334                 target_call_timer_callbacks();
1335
1336                 gettimeofday(&now, NULL);
1337                 if ((now.tv_sec >= timeout.tv_sec) && (now.tv_usec >= timeout.tv_usec))
1338                 {
1339                         command_print(cmd_ctx, "timed out while waiting for target halt");
1340                         ERROR("timed out while waiting for target halt");
1341                         break;
1342                 }
1343         }
1344
1345         return ERROR_OK;
1346 }
1347
1348 int handle_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1349 {
1350         int retval;
1351         target_t *target = get_current_target(cmd_ctx);
1352
1353         DEBUG("-");
1354
1355         command_print(cmd_ctx, "requesting target halt...");
1356
1357         if ((retval = target->type->halt(target)) != ERROR_OK)
1358         {
1359                 switch (retval)
1360                 {
1361                         case ERROR_TARGET_ALREADY_HALTED:
1362                                 command_print(cmd_ctx, "target already halted");
1363                                 break;
1364                         case ERROR_TARGET_TIMEOUT:
1365                                 command_print(cmd_ctx, "target timed out... shutting down");
1366                                 exit(-1);
1367                         default:
1368                                 command_print(cmd_ctx, "unknown error... shutting down");
1369                                 exit(-1);
1370                 }
1371         }
1372
1373         return ERROR_OK;
1374
1375 }
1376
1377 /* what to do on daemon startup */
1378 int handle_daemon_startup_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1379 {
1380         if (argc == 1)
1381         {
1382                 if (strcmp(args[0], "attach") == 0)
1383                 {
1384                         startup_mode = DAEMON_ATTACH;
1385                         return ERROR_OK;
1386                 }
1387                 else if (strcmp(args[0], "reset") == 0)
1388                 {
1389                         startup_mode = DAEMON_RESET;
1390                         return ERROR_OK;
1391                 }
1392         }
1393
1394         WARNING("invalid daemon_startup configuration directive: %s", args[0]);
1395         return ERROR_OK;
1396
1397 }
1398
1399 int handle_soft_reset_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1400 {
1401         target_t *target = get_current_target(cmd_ctx);
1402         int retval;
1403
1404         command_print(cmd_ctx, "requesting target halt and executing a soft reset");
1405
1406         if ((retval = target->type->soft_reset_halt(target)) != ERROR_OK)
1407         {
1408                 switch (retval)
1409                 {
1410                         case ERROR_TARGET_TIMEOUT:
1411                                 command_print(cmd_ctx, "target timed out... shutting down");
1412                                 exit(-1);
1413                         default:
1414                                 command_print(cmd_ctx, "unknown error... shutting down");
1415                                 exit(-1);
1416                 }
1417         }
1418
1419         return ERROR_OK;
1420 }
1421
1422 int handle_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1423 {
1424         target_t *target = get_current_target(cmd_ctx);
1425         enum target_reset_mode reset_mode = RESET_RUN;
1426
1427         DEBUG("-");
1428
1429         if (argc >= 1)
1430         {
1431                 if (strcmp("run", args[0]) == 0)
1432                         reset_mode = RESET_RUN;
1433                 else if (strcmp("halt", args[0]) == 0)
1434                         reset_mode = RESET_HALT;
1435                 else if (strcmp("init", args[0]) == 0)
1436                         reset_mode = RESET_INIT;
1437                 else if (strcmp("run_and_halt", args[0]) == 0)
1438                 {
1439                         reset_mode = RESET_RUN_AND_HALT;
1440                         if (argc >= 2)
1441                         {
1442                                 target->run_and_halt_time = strtoul(args[1], NULL, 0);
1443                         }
1444                 }
1445                 else if (strcmp("run_and_init", args[0]) == 0)
1446                 {
1447                         reset_mode = RESET_RUN_AND_INIT;
1448                         if (argc >= 2)
1449                         {
1450                                 target->run_and_halt_time = strtoul(args[1], NULL, 0);
1451                         }
1452                 }
1453                 else
1454                 {
1455                         command_print(cmd_ctx, "usage: reset ['run', 'halt', 'init', 'run_and_halt', 'run_and_init]");
1456                         return ERROR_OK;
1457                 }
1458                 target->reset_mode = reset_mode;
1459         }
1460
1461         target_process_reset(cmd_ctx);
1462
1463         return ERROR_OK;
1464 }
1465
1466 int handle_resume_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1467 {
1468         int retval;
1469         target_t *target = get_current_target(cmd_ctx);
1470
1471         DEBUG("-");
1472
1473         if (argc == 0)
1474                 retval = target->type->resume(target, 1, 0, 1, 0); /* current pc, addr = 0, handle breakpoints, not debugging */
1475         else if (argc == 1)
1476                 retval = target->type->resume(target, 0, strtoul(args[0], NULL, 0), 1, 0); /* addr = args[0], handle breakpoints, not debugging */
1477         else
1478         {
1479                 command_print(cmd_ctx, "usage: resume [address]");
1480                 return ERROR_OK;
1481         }
1482
1483         if (retval != ERROR_OK)
1484         {
1485                 switch (retval)
1486                 {
1487                         case ERROR_TARGET_NOT_HALTED:
1488                                 command_print(cmd_ctx, "target not halted");
1489                                 break;
1490                         default:
1491                                 command_print(cmd_ctx, "unknown error... shutting down");
1492                                 exit(-1);
1493                 }
1494         }
1495
1496         return ERROR_OK;
1497 }
1498
1499 int handle_step_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1500 {
1501         target_t *target = get_current_target(cmd_ctx);
1502
1503         DEBUG("-");
1504
1505         if (argc == 0)
1506                 target->type->step(target, 1, 0, 1); /* current pc, addr = 0, handle breakpoints */
1507
1508         if (argc == 1)
1509                 target->type->step(target, 0, strtoul(args[0], NULL, 0), 1); /* addr = args[0], handle breakpoints */
1510
1511         return ERROR_OK;
1512 }
1513
1514 int handle_md_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1515 {
1516         int count = 1;
1517         int size = 4;
1518         u32 address = 0;
1519         int i;
1520
1521         char output[128];
1522         int output_len;
1523
1524         int retval;
1525
1526         u8 *buffer;
1527         target_t *target = get_current_target(cmd_ctx);
1528
1529         if (argc < 1)
1530                 return ERROR_OK;
1531
1532         if (argc == 2)
1533                 count = strtoul(args[1], NULL, 0);
1534
1535         address = strtoul(args[0], NULL, 0);
1536
1537
1538         switch (cmd[2])
1539         {
1540                 case 'w':
1541                         size = 4;
1542                         break;
1543                 case 'h':
1544                         size = 2;
1545                         break;
1546                 case 'b':
1547                         size = 1;
1548                         break;
1549                 default:
1550                         return ERROR_OK;
1551         }
1552
1553         buffer = calloc(count, size);
1554         if ((retval  = target->type->read_memory(target, address, size, count, buffer)) != ERROR_OK)
1555         {
1556                 switch (retval)
1557                 {
1558                         case ERROR_TARGET_UNALIGNED_ACCESS:
1559                                 command_print(cmd_ctx, "error: address not aligned");
1560                                 break;
1561                         case ERROR_TARGET_NOT_HALTED:
1562                                 command_print(cmd_ctx, "error: target must be halted for memory accesses");
1563                                 break;
1564                         case ERROR_TARGET_DATA_ABORT:
1565                                 command_print(cmd_ctx, "error: access caused data abort, system possibly corrupted");
1566                                 break;
1567                         default:
1568                                 command_print(cmd_ctx, "error: unknown error");
1569                                 break;
1570                 }
1571                 return ERROR_OK;
1572         }
1573
1574         output_len = 0;
1575
1576         for (i = 0; i < count; i++)
1577         {
1578                 if (i%8 == 0)
1579                         output_len += snprintf(output + output_len, 128 - output_len, "0x%8.8x: ", address + (i*size));
1580
1581                 switch (size)
1582                 {
1583                         case 4:
1584                                 output_len += snprintf(output + output_len, 128 - output_len, "%8.8x ", target_buffer_get_u32(target, &buffer[i*4]));
1585                                 break;
1586                         case 2:
1587                                 output_len += snprintf(output + output_len, 128 - output_len, "%4.4x ", target_buffer_get_u16(target, &buffer[i*2]));
1588                                 break;
1589                         case 1:
1590                                 output_len += snprintf(output + output_len, 128 - output_len, "%2.2x ", buffer[i*1]);
1591                                 break;
1592                 }
1593
1594                 if ((i%8 == 7) || (i == count - 1))
1595                 {
1596                         command_print(cmd_ctx, output);
1597                         output_len = 0;
1598                 }
1599         }
1600
1601         free(buffer);
1602
1603         return ERROR_OK;
1604 }
1605
1606 int handle_mw_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1607 {
1608         u32 address = 0;
1609         u32 value = 0;
1610         int retval;
1611         target_t *target = get_current_target(cmd_ctx);
1612         u8 value_buf[4];
1613
1614         if (argc < 2)
1615                 return ERROR_OK;
1616
1617         address = strtoul(args[0], NULL, 0);
1618         value = strtoul(args[1], NULL, 0);
1619
1620         switch (cmd[2])
1621         {
1622                 case 'w':
1623                         target_buffer_set_u32(target, value_buf, value);
1624                         retval = target->type->write_memory(target, address, 4, 1, value_buf);
1625                         break;
1626                 case 'h':
1627                         target_buffer_set_u16(target, value_buf, value);
1628                         retval = target->type->write_memory(target, address, 2, 1, value_buf);
1629                         break;
1630                 case 'b':
1631                         value_buf[0] = value;
1632                         retval = target->type->write_memory(target, address, 1, 1, value_buf);
1633                         break;
1634                 default:
1635                         return ERROR_OK;
1636         }
1637
1638         switch (retval)
1639         {
1640                 case ERROR_TARGET_UNALIGNED_ACCESS:
1641                         command_print(cmd_ctx, "error: address not aligned");
1642                         break;
1643                 case ERROR_TARGET_DATA_ABORT:
1644                         command_print(cmd_ctx, "error: access caused data abort, system possibly corrupted");
1645                         break;
1646                 case ERROR_TARGET_NOT_HALTED:
1647                         command_print(cmd_ctx, "error: target must be halted for memory accesses");
1648                         break;
1649                 case ERROR_OK:
1650                         break;
1651                 default:
1652                         command_print(cmd_ctx, "error: unknown error");
1653                         break;
1654         }
1655
1656         return ERROR_OK;
1657
1658 }
1659
1660 int handle_load_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1661 {
1662         u8 *buffer;
1663         u32 buf_cnt;
1664         u32 image_size;
1665         int i;
1666         int retval;
1667
1668         image_t image;
1669
1670         duration_t duration;
1671         char *duration_text;
1672
1673         target_t *target = get_current_target(cmd_ctx);
1674
1675         if (argc < 1)
1676         {
1677                 command_print(cmd_ctx, "usage: load_image <filename> [address] [type]");
1678                 return ERROR_OK;
1679         }
1680
1681         /* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */
1682         if (argc >= 2)
1683         {
1684                 image.base_address_set = 1;
1685                 image.base_address = strtoul(args[1], NULL, 0);
1686         }
1687         else
1688         {
1689                 image.base_address_set = 0;
1690         }
1691
1692         image.start_address_set = 0;
1693
1694         duration_start_measure(&duration);
1695
1696         if (image_open(&image, args[0], (argc >= 3) ? args[2] : NULL) != ERROR_OK)
1697         {
1698                 command_print(cmd_ctx, "load_image error: %s", image.error_str);
1699                 return ERROR_OK;
1700         }
1701
1702         image_size = 0x0;
1703         for (i = 0; i < image.num_sections; i++)
1704         {
1705                 buffer = malloc(image.sections[i].size);
1706                 if ((retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt)) != ERROR_OK)
1707                 {
1708                         ERROR("image_read_section failed with error code: %i", retval);
1709                         command_print(cmd_ctx, "image reading failed, download aborted");
1710                         free(buffer);
1711                         image_close(&image);
1712                         return ERROR_OK;
1713                 }
1714                 target_write_buffer(target, image.sections[i].base_address, buf_cnt, buffer);
1715                 image_size += buf_cnt;
1716                 command_print(cmd_ctx, "%u byte written at address 0x%8.8x", buf_cnt, image.sections[i].base_address);
1717
1718                 free(buffer);
1719         }
1720
1721         duration_stop_measure(&duration, &duration_text);
1722         command_print(cmd_ctx, "downloaded %u byte in %s", image_size, duration_text);
1723         free(duration_text);
1724
1725         image_close(&image);
1726
1727         return ERROR_OK;
1728
1729 }
1730
1731 int handle_dump_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1732 {
1733         fileio_t fileio;
1734
1735         u32 address;
1736         u32 size;
1737         u8 buffer[560];
1738
1739         duration_t duration;
1740         char *duration_text;
1741
1742         target_t *target = get_current_target(cmd_ctx);
1743
1744         if (argc != 3)
1745         {
1746                 command_print(cmd_ctx, "usage: dump_image <filename> <address> <size>");
1747                 return ERROR_OK;
1748         }
1749
1750         address = strtoul(args[1], NULL, 0);
1751         size = strtoul(args[2], NULL, 0);
1752
1753         if ((address & 3) || (size & 3))
1754         {
1755                 command_print(cmd_ctx, "only 32-bit aligned address and size are supported");
1756                 return ERROR_OK;
1757         }
1758
1759         if (fileio_open(&fileio, args[0], FILEIO_WRITE, FILEIO_BINARY) != ERROR_OK)
1760         {
1761                 command_print(cmd_ctx, "dump_image error: %s", fileio.error_str);
1762                 return ERROR_OK;
1763         }
1764
1765         duration_start_measure(&duration);
1766
1767         while (size > 0)
1768         {
1769                 u32 size_written;
1770                 u32 this_run_size = (size > 560) ? 560 : size;
1771
1772                 target->type->read_memory(target, address, 4, this_run_size / 4, buffer);
1773                 fileio_write(&fileio, this_run_size, buffer, &size_written);
1774
1775                 size -= this_run_size;
1776                 address += this_run_size;
1777         }
1778
1779         fileio_close(&fileio);
1780
1781         duration_stop_measure(&duration, &duration_text);
1782         command_print(cmd_ctx, "dumped %"PRIi64" byte in %s", fileio.size, duration_text);
1783         free(duration_text);
1784
1785         return ERROR_OK;
1786
1787 }
1788
1789 int handle_bp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1790 {
1791         int retval;
1792         target_t *target = get_current_target(cmd_ctx);
1793
1794         if (argc == 0)
1795         {
1796                 breakpoint_t *breakpoint = target->breakpoints;
1797
1798                 while (breakpoint)
1799                 {
1800                         if (breakpoint->type == BKPT_SOFT)
1801                         {
1802                                 char* buf = buf_to_str(breakpoint->orig_instr, breakpoint->length, 16);
1803                                 command_print(cmd_ctx, "0x%8.8x, 0x%x, %i, 0x%s", breakpoint->address, breakpoint->length, breakpoint->set, buf);
1804                                 free(buf);
1805                         }
1806                         else
1807                         {
1808                                 command_print(cmd_ctx, "0x%8.8x, 0x%x, %i", breakpoint->address, breakpoint->length, breakpoint->set);
1809                         }
1810                         breakpoint = breakpoint->next;
1811                 }
1812         }
1813         else if (argc >= 2)
1814         {
1815                 int hw = BKPT_SOFT;
1816                 u32 length = 0;
1817
1818                 length = strtoul(args[1], NULL, 0);
1819
1820                 if (argc >= 3)
1821                         if (strcmp(args[2], "hw") == 0)
1822                                 hw = BKPT_HARD;
1823
1824                 if ((retval = breakpoint_add(target, strtoul(args[0], NULL, 0), length, hw)) != ERROR_OK)
1825                 {
1826                         switch (retval)
1827                         {
1828                                 case ERROR_TARGET_NOT_HALTED:
1829                                         command_print(cmd_ctx, "target must be halted to set breakpoints");
1830                                         break;
1831                                 case ERROR_TARGET_RESOURCE_NOT_AVAILABLE:
1832                                         command_print(cmd_ctx, "no more breakpoints available");
1833                                         break;
1834                                 default:
1835                                         command_print(cmd_ctx, "unknown error, breakpoint not set");
1836                                         break;
1837                         }
1838                 }
1839                 else
1840                 {
1841                         command_print(cmd_ctx, "breakpoint added at address 0x%8.8x", strtoul(args[0], NULL, 0));
1842                 }
1843         }
1844         else
1845         {
1846                 command_print(cmd_ctx, "usage: bp <address> <length> ['hw']");
1847         }
1848
1849         return ERROR_OK;
1850 }
1851
1852 int handle_rbp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1853 {
1854         target_t *target = get_current_target(cmd_ctx);
1855
1856         if (argc > 0)
1857                 breakpoint_remove(target, strtoul(args[0], NULL, 0));
1858
1859         return ERROR_OK;
1860 }
1861
1862 int handle_wp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1863 {
1864         target_t *target = get_current_target(cmd_ctx);
1865         int retval;
1866
1867         if (argc == 0)
1868         {
1869                 watchpoint_t *watchpoint = target->watchpoints;
1870
1871                 while (watchpoint)
1872                 {
1873                         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);
1874                         watchpoint = watchpoint->next;
1875                 }
1876         }
1877         else if (argc >= 2)
1878         {
1879                 enum watchpoint_rw type = WPT_ACCESS;
1880                 u32 data_value = 0x0;
1881                 u32 data_mask = 0xffffffff;
1882
1883                 if (argc >= 3)
1884                 {
1885                         switch(args[2][0])
1886                         {
1887                                 case 'r':
1888                                         type = WPT_READ;
1889                                         break;
1890                                 case 'w':
1891                                         type = WPT_WRITE;
1892                                         break;
1893                                 case 'a':
1894                                         type = WPT_ACCESS;
1895                                         break;
1896                                 default:
1897                                         command_print(cmd_ctx, "usage: wp <address> <length> [r/w/a] [value] [mask]");
1898                                         return ERROR_OK;
1899                         }
1900                 }
1901                 if (argc >= 4)
1902                 {
1903                         data_value = strtoul(args[3], NULL, 0);
1904                 }
1905                 if (argc >= 5)
1906                 {
1907                         data_mask = strtoul(args[4], NULL, 0);
1908                 }
1909
1910                 if ((retval = watchpoint_add(target, strtoul(args[0], NULL, 0),
1911                                 strtoul(args[1], NULL, 0), type, data_value, data_mask)) != ERROR_OK)
1912                 {
1913                         switch (retval)
1914                         {
1915                                 case ERROR_TARGET_NOT_HALTED:
1916                                         command_print(cmd_ctx, "target must be halted to set watchpoints");
1917                                         break;
1918                                 case ERROR_TARGET_RESOURCE_NOT_AVAILABLE:
1919                                         command_print(cmd_ctx, "no more watchpoints available");
1920                                         break;
1921                                 default:
1922                                         command_print(cmd_ctx, "unknown error, watchpoint not set");
1923                                         break;
1924                         }
1925                 }
1926         }
1927         else
1928         {
1929                 command_print(cmd_ctx, "usage: wp <address> <length> [r/w/a] [value] [mask]");
1930         }
1931
1932         return ERROR_OK;
1933 }
1934
1935 int handle_rwp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1936 {
1937         target_t *target = get_current_target(cmd_ctx);
1938
1939         if (argc > 0)
1940                 watchpoint_remove(target, strtoul(args[0], NULL, 0));
1941
1942         return ERROR_OK;
1943 }
1944