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