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