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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 #include "target_request.h"
  27
  28 #include "log.h"
  29 #include "configuration.h"
  30 #include "binarybuffer.h"
  31 #include "jtag.h"
  32
  33 #include <string.h>
  34 #include <stdlib.h>
  35 #include <inttypes.h>
  36
  37 #include <sys/types.h>
  38 #include <sys/stat.h>
  39 #include <unistd.h>
  40 #include <errno.h>
  41
  42 #include <sys/time.h>
  43 #include <time.h>
  44
  45 #include <time_support.h>
  46
  47 #include <fileio.h>
  48 #include <image.h>
  49
  50 int cli_target_callback_event_handler(struct target_s *target, enum target_event event, void *priv);
  51
  52 int handle_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  53 int handle_daemon_startup_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  54 int handle_targets_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  55
  56 int handle_target_script_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  57 int handle_run_and_halt_time_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  58 int handle_working_area_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  59
  60 int handle_reg_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  61 int handle_poll_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  62 int handle_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  63 int handle_wait_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  64 int handle_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  65 int handle_soft_reset_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  66 int handle_resume_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  67 int handle_step_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  68 int handle_md_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  69 int handle_mw_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  70 int handle_load_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  71 int handle_dump_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  72 int handle_bp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  73 int handle_rbp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  74 int handle_wp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  75 int handle_rwp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  76
  77 /* targets
  78  */
  79 extern target_type_t arm7tdmi_target;
  80 extern target_type_t arm720t_target;
  81 extern target_type_t arm9tdmi_target;
  82 extern target_type_t arm920t_target;
  83 extern target_type_t arm966e_target;
  84 extern target_type_t arm926ejs_target;
  85 extern target_type_t xscale_target;
  86 extern target_type_t cortexm3_target;
  87
  88 target_type_t *target_types[] =
  89 {
  90         &arm7tdmi_target,
  91         &arm9tdmi_target,
  92         &arm920t_target,
  93         &arm720t_target,
  94         &arm966e_target,
  95         &arm926ejs_target,
  96         &xscale_target,
  97         &cortexm3_target,
  98         NULL,
  99 };
 100
 101 target_t *targets = NULL;
 102 target_event_callback_t *target_event_callbacks = NULL;
 103 target_timer_callback_t *target_timer_callbacks = NULL;
 104
 105 char *target_state_strings[] =
 106 {
 107         "unknown",
 108         "running",
 109         "halted",
 110         "reset",
 111         "debug_running",
 112 };
 113
 114 char *target_debug_reason_strings[] =
 115 {
 116         "debug request", "breakpoint", "watchpoint",
 117         "watchpoint and breakpoint", "single step",
 118         "target not halted"
 119 };
 120
 121 char *target_endianess_strings[] =
 122 {
 123         "big endian",
 124         "little endian",
 125 };
 126
 127 enum daemon_startup_mode startup_mode = DAEMON_ATTACH;
 128
 129 static int target_continous_poll = 1;
 130
 131 /* read a u32 from a buffer in target memory endianness */
 132 u32 target_buffer_get_u32(target_t *target, u8 *buffer)
 133 {
 134         if (target->endianness == TARGET_LITTLE_ENDIAN)
 135                 return le_to_h_u32(buffer);
 136         else
 137                 return be_to_h_u32(buffer);
 138 }
 139
 140 /* read a u16 from a buffer in target memory endianness */
 141 u16 target_buffer_get_u16(target_t *target, u8 *buffer)
 142 {
 143         if (target->endianness == TARGET_LITTLE_ENDIAN)
 144                 return le_to_h_u16(buffer);
 145         else
 146                 return be_to_h_u16(buffer);
 147 }
 148
 149 /* write a u32 to a buffer in target memory endianness */
 150 void target_buffer_set_u32(target_t *target, u8 *buffer, u32 value)
 151 {
 152         if (target->endianness == TARGET_LITTLE_ENDIAN)
 153                 h_u32_to_le(buffer, value);
 154         else
 155                 h_u32_to_be(buffer, value);
 156 }
 157
 158 /* write a u16 to a buffer in target memory endianness */
 159 void target_buffer_set_u16(target_t *target, u8 *buffer, u16 value)
 160 {
 161         if (target->endianness == TARGET_LITTLE_ENDIAN)
 162                 h_u16_to_le(buffer, value);
 163         else
 164                 h_u16_to_be(buffer, value);
 165 }
 166
 167 /* returns a pointer to the n-th configured target */
 168 target_t* get_target_by_num(int num)
 169 {
 170         target_t *target = targets;
 171         int i = 0;
 172
 173         while (target)
 174         {
 175                 if (num == i)
 176                         return target;
 177                 target = target->next;
 178                 i++;
 179         }
 180
 181         return NULL;
 182 }
 183
 184 int get_num_by_target(target_t *query_target)
 185 {
 186         target_t *target = targets;
 187         int i = 0;
 188
 189         while (target)
 190         {
 191                 if (target == query_target)
 192                         return i;
 193                 target = target->next;
 194                 i++;
 195         }
 196
 197         return -1;
 198 }
 199
 200 target_t* get_current_target(command_context_t *cmd_ctx)
 201 {
 202         target_t *target = get_target_by_num(cmd_ctx->current_target);
 203
 204         if (target == NULL)
 205         {
 206                 ERROR("BUG: current_target out of bounds");
 207                 exit(-1);
 208         }
 209
 210         return target;
 211 }
 212
 213 /* Process target initialization, when target entered debug out of reset
 214  * the handler is unregistered at the end of this function, so it's only called once
 215  */
 216 int target_init_handler(struct target_s *target, enum target_event event, void *priv)
 217 {
 218         FILE *script;
 219         struct command_context_s *cmd_ctx = priv;
 220
 221         if ((event == TARGET_EVENT_HALTED) && (target->reset_script))
 222         {
 223                 target_unregister_event_callback(target_init_handler, priv);
 224
 225                 script = fopen(target->reset_script, "r");
 226                 if (!script)
 227                 {
 228                         ERROR("couldn't open script file %s", target->reset_script);
 229                                 return ERROR_OK;
 230                 }
 231
 232                 INFO("executing reset script '%s'", target->reset_script);
 233                 command_run_file(cmd_ctx, script, COMMAND_EXEC);
 234                 fclose(script);
 235
 236                 jtag_execute_queue();
 237         }
 238
 239         return ERROR_OK;
 240 }
 241
 242 int target_run_and_halt_handler(void *priv)
 243 {
 244         target_t *target = priv;
 245
 246         target->type->halt(target);
 247
 248         return ERROR_OK;
 249 }
 250
 251 int target_process_reset(struct command_context_s *cmd_ctx)
 252 {
 253         int retval = ERROR_OK;
 254         target_t *target;
 255
 256         /* prepare reset_halt where necessary */
 257         target = targets;
 258         while (target)
 259         {
 260                 switch (target->reset_mode)
 261                 {
 262                         case RESET_HALT:
 263                         case RESET_INIT:
 264                                 target->type->prepare_reset_halt(target);
 265                                 break;
 266                         default:
 267                                 break;
 268                 }
 269                 target = target->next;
 270         }
 271
 272         target = targets;
 273         while (target)
 274         {
 275                 target->type->assert_reset(target);
 276                 target = target->next;
 277         }
 278         jtag_execute_queue();
 279
 280         /* request target halt if necessary, and schedule further action */
 281         target = targets;
 282         while (target)
 283         {
 284                 switch (target->reset_mode)
 285                 {
 286                         case RESET_RUN:
 287                                 /* nothing to do if target just wants to be run */
 288                                 break;
 289                         case RESET_RUN_AND_HALT:
 290                                 /* schedule halt */
 291                                 target_register_timer_callback(target_run_and_halt_handler, target->run_and_halt_time, 0, target);
 292                                 break;
 293                         case RESET_RUN_AND_INIT:
 294                                 /* schedule halt */
 295                                 target_register_timer_callback(target_run_and_halt_handler, target->run_and_halt_time, 0, target);
 296                                 target_register_event_callback(target_init_handler, cmd_ctx);
 297                                 break;
 298                         case RESET_HALT:
 299                                 target->type->halt(target);
 300                                 break;
 301                         case RESET_INIT:
 302                                 target->type->halt(target);
 303                                 target_register_event_callback(target_init_handler, cmd_ctx);
 304                                 break;
 305                         default:
 306                                 ERROR("BUG: unknown target->reset_mode");
 307                 }
 308                 target = target->next;
 309         }
 310
 311         target = targets;
 312         while (target)
 313         {
 314                 target->type->deassert_reset(target);
 315                 target = target->next;
 316         }
 317         jtag_execute_queue();
 318
 319         return retval;
 320 }
 321
 322 int target_init(struct command_context_s *cmd_ctx)
 323 {
 324         target_t *target = targets;
 325
 326         while (target)
 327         {
 328                 if (target->type->init_target(cmd_ctx, target) != ERROR_OK)
 329                 {
 330                         ERROR("target '%s' init failed", target->type->name);
 331                         exit(-1);
 332                 }
 333                 target = target->next;
 334         }
 335
 336         if (targets)
 337         {
 338                 target_register_user_commands(cmd_ctx);
 339                 target_register_timer_callback(handle_target, 100, 1, NULL);
 340         }
 341
 342         if (startup_mode == DAEMON_RESET)
 343                 target_process_reset(cmd_ctx);
 344
 345         return ERROR_OK;
 346 }
 347
 348 int target_register_event_callback(int (*callback)(struct target_s *target, enum target_event event, void *priv), void *priv)
 349 {
 350         target_event_callback_t **callbacks_p = &target_event_callbacks;
 351
 352         if (callback == NULL)
 353         {
 354                 return ERROR_INVALID_ARGUMENTS;
 355         }
 356
 357         if (*callbacks_p)
 358         {
 359                 while ((*callbacks_p)->next)
 360                         callbacks_p = &((*callbacks_p)->next);
 361                 callbacks_p = &((*callbacks_p)->next);
 362         }
 363
 364         (*callbacks_p) = malloc(sizeof(target_event_callback_t));
 365         (*callbacks_p)->callback = callback;
 366         (*callbacks_p)->priv = priv;
 367         (*callbacks_p)->next = NULL;
 368
 369         return ERROR_OK;
 370 }
 371
 372 int target_register_timer_callback(int (*callback)(void *priv), int time_ms, int periodic, void *priv)
 373 {
 374         target_timer_callback_t **callbacks_p = &target_timer_callbacks;
 375         struct timeval now;
 376
 377         if (callback == NULL)
 378         {
 379                 return ERROR_INVALID_ARGUMENTS;
 380         }
 381
 382         if (*callbacks_p)
 383         {
 384                 while ((*callbacks_p)->next)
 385                         callbacks_p = &((*callbacks_p)->next);
 386                 callbacks_p = &((*callbacks_p)->next);
 387         }
 388
 389         (*callbacks_p) = malloc(sizeof(target_timer_callback_t));
 390         (*callbacks_p)->callback = callback;
 391         (*callbacks_p)->periodic = periodic;
 392         (*callbacks_p)->time_ms = time_ms;
 393
 394         gettimeofday(&now, NULL);
 395         (*callbacks_p)->when.tv_usec = now.tv_usec + (time_ms % 1000) * 1000;
 396         time_ms -= (time_ms % 1000);
 397         (*callbacks_p)->when.tv_sec = now.tv_sec + (time_ms / 1000);
 398         if ((*callbacks_p)->when.tv_usec > 1000000)
 399         {
 400                 (*callbacks_p)->when.tv_usec = (*callbacks_p)->when.tv_usec - 1000000;
 401                 (*callbacks_p)->when.tv_sec += 1;
 402         }
 403
 404         (*callbacks_p)->priv = priv;
 405         (*callbacks_p)->next = NULL;
 406
 407         return ERROR_OK;
 408 }
 409
 410 int target_unregister_event_callback(int (*callback)(struct target_s *target, enum target_event event, void *priv), void *priv)
 411 {
 412         target_event_callback_t **p = &target_event_callbacks;
 413         target_event_callback_t *c = target_event_callbacks;
 414
 415         if (callback == NULL)
 416         {
 417                 return ERROR_INVALID_ARGUMENTS;
 418         }
 419
 420         while (c)
 421         {
 422                 target_event_callback_t *next = c->next;
 423                 if ((c->callback == callback) && (c->priv == priv))
 424                 {
 425                         *p = next;
 426                         free(c);
 427                         return ERROR_OK;
 428                 }
 429                 else
 430                         p = &(c->next);
 431                 c = next;
 432         }
 433
 434         return ERROR_OK;
 435 }
 436
 437 int target_unregister_timer_callback(int (*callback)(void *priv), void *priv)
 438 {
 439         target_timer_callback_t **p = &target_timer_callbacks;
 440         target_timer_callback_t *c = target_timer_callbacks;
 441
 442         if (callback == NULL)
 443         {
 444                 return ERROR_INVALID_ARGUMENTS;
 445         }
 446
 447         while (c)
 448         {
 449                 target_timer_callback_t *next = c->next;
 450                 if ((c->callback == callback) && (c->priv == priv))
 451                 {
 452                         *p = next;
 453                         free(c);
 454                         return ERROR_OK;
 455                 }
 456                 else
 457                         p = &(c->next);
 458                 c = next;
 459         }
 460
 461         return ERROR_OK;
 462 }
 463
 464 int target_call_event_callbacks(target_t *target, enum target_event event)
 465 {
 466         target_event_callback_t *callback = target_event_callbacks;
 467         target_event_callback_t *next_callback;
 468
 469         DEBUG("target event %i", event);
 470
 471         while (callback)
 472         {
 473                 next_callback = callback->next;
 474                 callback->callback(target, event, callback->priv);
 475                 callback = next_callback;
 476         }
 477
 478         return ERROR_OK;
 479 }
 480
 481 int target_call_timer_callbacks()
 482 {
 483         target_timer_callback_t *callback = target_timer_callbacks;
 484         target_timer_callback_t *next_callback;
 485         struct timeval now;
 486
 487         gettimeofday(&now, NULL);
 488
 489         while (callback)
 490         {
 491                 next_callback = callback->next;
 492
 493                 if (((now.tv_sec >= callback->when.tv_sec) && (now.tv_usec >= callback->when.tv_usec))
 494                         || (now.tv_sec > callback->when.tv_sec))
 495                 {
 496                         callback->callback(callback->priv);
 497                         if (callback->periodic)
 498                         {
 499                                 int time_ms = callback->time_ms;
 500                                 callback->when.tv_usec = now.tv_usec + (time_ms % 1000) * 1000;
 501                                 time_ms -= (time_ms % 1000);
 502                                 callback->when.tv_sec = now.tv_sec + time_ms / 1000;
 503                                 if (callback->when.tv_usec > 1000000)
 504                                 {
 505                                         callback->when.tv_usec = callback->when.tv_usec - 1000000;
 506                                         callback->when.tv_sec += 1;
 507                                 }
 508                         }
 509                         else
 510                                 target_unregister_timer_callback(callback->callback, callback->priv);
 511                 }
 512
 513                 callback = next_callback;
 514         }
 515
 516         return ERROR_OK;
 517 }
 518
 519 int target_alloc_working_area(struct target_s *target, u32 size, working_area_t **area)
 520 {
 521         working_area_t *c = target->working_areas;
 522         working_area_t *new_wa = NULL;
 523
 524         /* only allocate multiples of 4 byte */
 525         if (size % 4)
 526         {
 527                 ERROR("BUG: code tried to allocate unaligned number of bytes, padding");
 528                 size = CEIL(size, 4);
 529         }
 530
 531         /* see if there's already a matching working area */
 532         while (c)
 533         {
 534                 if ((c->free) && (c->size == size))
 535                 {
 536                         new_wa = c;
 537                         break;
 538                 }
 539                 c = c->next;
 540         }
 541
 542         /* if not, allocate a new one */
 543         if (!new_wa)
 544         {
 545                 working_area_t **p = &target->working_areas;
 546                 u32 first_free = target->working_area;
 547                 u32 free_size = target->working_area_size;
 548
 549                 DEBUG("allocating new working area");
 550
 551                 c = target->working_areas;
 552                 while (c)
 553                 {
 554                         first_free += c->size;
 555                         free_size -= c->size;
 556                         p = &c->next;
 557                         c = c->next;
 558                 }
 559
 560                 if (free_size < size)
 561                 {
 562                         WARNING("not enough working area available");
 563                         return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
 564                 }
 565
 566                 new_wa = malloc(sizeof(working_area_t));
 567                 new_wa->next = NULL;
 568                 new_wa->size = size;
 569                 new_wa->address = first_free;
 570
 571                 if (target->backup_working_area)
 572                 {
 573                         new_wa->backup = malloc(new_wa->size);
 574                         target->type->read_memory(target, new_wa->address, 4, new_wa->size / 4, new_wa->backup);
 575                 }
 576                 else
 577                 {
 578                         new_wa->backup = NULL;
 579                 }
 580
 581                 /* put new entry in list */
 582                 *p = new_wa;
 583         }
 584
 585         /* mark as used, and return the new (reused) area */
 586         new_wa->free = 0;
 587         *area = new_wa;
 588
 589         /* user pointer */
 590         new_wa->user = area;
 591
 592         return ERROR_OK;
 593 }
 594
 595 int target_free_working_area(struct target_s *target, working_area_t *area)
 596 {
 597         if (area->free)
 598                 return ERROR_OK;
 599
 600         if (target->backup_working_area)
 601                 target->type->write_memory(target, area->address, 4, area->size / 4, area->backup);
 602
 603         area->free = 1;
 604
 605         /* mark user pointer invalid */
 606         *area->user = NULL;
 607         area->user = NULL;
 608
 609         return ERROR_OK;
 610 }
 611
 612 int target_free_all_working_areas(struct target_s *target)
 613 {
 614         working_area_t *c = target->working_areas;
 615
 616         while (c)
 617         {
 618                 working_area_t *next = c->next;
 619                 target_free_working_area(target, c);
 620
 621                 if (c->backup)
 622                         free(c->backup);
 623
 624                 free(c);
 625
 626                 c = next;
 627         }
 628
 629         target->working_areas = NULL;
 630
 631         return ERROR_OK;
 632 }
 633
 634 int target_register_commands(struct command_context_s *cmd_ctx)
 635 {
 636         register_command(cmd_ctx, NULL, "target", handle_target_command, COMMAND_CONFIG, NULL);
 637         register_command(cmd_ctx, NULL, "targets", handle_targets_command, COMMAND_EXEC, NULL);
 638         register_command(cmd_ctx, NULL, "daemon_startup", handle_daemon_startup_command, COMMAND_CONFIG, NULL);
 639         register_command(cmd_ctx, NULL, "target_script", handle_target_script_command, COMMAND_CONFIG, NULL);
 640         register_command(cmd_ctx, NULL, "run_and_halt_time", handle_run_and_halt_time_command, COMMAND_CONFIG, NULL);
 641         register_command(cmd_ctx, NULL, "working_area", handle_working_area_command, COMMAND_CONFIG, NULL);
 642
 643         return ERROR_OK;
 644 }
 645
 646 int target_write_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer)
 647 {
 648         int retval;
 649
 650         DEBUG("writing buffer of %i byte at 0x%8.8x", size, address);
 651
 652         /* handle writes of less than 4 byte */
 653         if (size < 4)
 654         {
 655                 if ((retval = target->type->write_memory(target, address, 1, size, buffer)) != ERROR_OK)
 656                         return retval;
 657                 return ERROR_OK;
 658         }
 659
 660         /* handle unaligned head bytes */
 661         if (address % 4)
 662         {
 663                 int unaligned = 4 - (address % 4);
 664
 665                 if ((retval = target->type->write_memory(target, address, 1, unaligned, buffer)) != ERROR_OK)
 666                         return retval;
 667
 668                 buffer += unaligned;
 669                 address += unaligned;
 670                 size -= unaligned;
 671         }
 672
 673         /* handle aligned words */
 674         if (size >= 4)
 675         {
 676                 int aligned = size - (size % 4);
 677
 678                 /* use bulk writes above a certain limit. This may have to be changed */
 679                 if (aligned > 128)
 680                 {
 681                         if ((retval = target->type->bulk_write_memory(target, address, aligned / 4, buffer)) != ERROR_OK)
 682                                 return retval;
 683                 }
 684                 else
 685                 {
 686                         if ((retval = target->type->write_memory(target, address, 4, aligned / 4, buffer)) != ERROR_OK)
 687                                 return retval;
 688                 }
 689
 690                 buffer += aligned;
 691                 address += aligned;
 692                 size -= aligned;
 693         }
 694
 695         /* handle tail writes of less than 4 bytes */
 696         if (size > 0)
 697         {
 698                 if ((retval = target->type->write_memory(target, address, 1, size, buffer)) != ERROR_OK)
 699                         return retval;
 700         }
 701
 702         return ERROR_OK;
 703 }
 704
 705 int target_read_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer)
 706 {
 707         int retval;
 708
 709         DEBUG("reading buffer of %i byte at 0x%8.8x", size, address);
 710
 711         /* handle reads of less than 4 byte */
 712         if (size < 4)
 713         {
 714                 if ((retval = target->type->read_memory(target, address, 1, size, buffer)) != ERROR_OK)
 715                         return retval;
 716                 return ERROR_OK;
 717         }
 718
 719         /* handle unaligned head bytes */
 720         if (address % 4)
 721         {
 722                 int unaligned = 4 - (address % 4);
 723
 724                 if ((retval = target->type->read_memory(target, address, 1, unaligned, buffer)) != ERROR_OK)
 725                         return retval;
 726
 727                 buffer += unaligned;
 728                 address += unaligned;
 729                 size -= unaligned;
 730         }
 731
 732         /* handle aligned words */
 733         if (size >= 4)
 734         {
 735                 int aligned = size - (size % 4);
 736
 737                 if ((retval = target->type->read_memory(target, address, 4, aligned / 4, buffer)) != ERROR_OK)
 738                         return retval;
 739
 740                 buffer += aligned;
 741                 address += aligned;
 742                 size -= aligned;
 743         }
 744
 745         /* handle tail writes of less than 4 bytes */
 746         if (size > 0)
 747         {
 748                 if ((retval = target->type->read_memory(target, address, 1, size, buffer)) != ERROR_OK)
 749                         return retval;
 750         }
 751
 752         return ERROR_OK;
 753 }
 754
 755 int target_read_u32(struct target_s *target, u32 address, u32 *value)
 756 {
 757         u8 value_buf[4];
 758
 759         int retval = target->type->read_memory(target, address, 4, 1, value_buf);
 760
 761         if (retval == ERROR_OK)
 762         {
 763                 *value = target_buffer_get_u32(target, value_buf);
 764                 DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, *value);
 765         }
 766         else
 767         {
 768                 *value = 0x0;
 769                 DEBUG("address: 0x%8.8x failed", address);
 770         }
 771
 772         return retval;
 773 }
 774
 775 int target_read_u16(struct target_s *target, u32 address, u16 *value)
 776 {
 777         u8 value_buf[2];
 778
 779         int retval = target->type->read_memory(target, address, 2, 1, value_buf);
 780
 781         if (retval == ERROR_OK)
 782         {
 783                 *value = target_buffer_get_u16(target, value_buf);
 784                 DEBUG("address: 0x%8.8x, value: 0x%4.4x", address, *value);
 785         }
 786         else
 787         {
 788                 *value = 0x0;
 789                 DEBUG("address: 0x%8.8x failed", address);
 790         }
 791
 792         return retval;
 793 }
 794
 795 int target_read_u8(struct target_s *target, u32 address, u8 *value)
 796 {
 797         int retval = target->type->read_memory(target, address, 1, 1, value);
 798
 799         if (retval == ERROR_OK)
 800         {
 801                 DEBUG("address: 0x%8.8x, value: 0x%2.2x", address, *value);
 802         }
 803         else
 804         {
 805                 *value = 0x0;
 806                 DEBUG("address: 0x%8.8x failed", address);
 807         }
 808
 809         return retval;
 810 }
 811
 812 int target_write_u32(struct target_s *target, u32 address, u32 value)
 813 {
 814         int retval;
 815         u8 value_buf[4];
 816
 817         DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, value);
 818
 819         target_buffer_set_u32(target, value_buf, value);
 820         if ((retval = target->type->write_memory(target, address, 4, 1, value_buf)) != ERROR_OK)
 821         {
 822                 DEBUG("failed: %i", retval);
 823         }
 824
 825         return retval;
 826 }
 827
 828 int target_write_u16(struct target_s *target, u32 address, u16 value)
 829 {
 830         int retval;
 831         u8 value_buf[2];
 832
 833         DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, value);
 834
 835         target_buffer_set_u16(target, value_buf, value);
 836         if ((retval = target->type->write_memory(target, address, 2, 1, value_buf)) != ERROR_OK)
 837         {
 838                 DEBUG("failed: %i", retval);
 839         }
 840
 841         return retval;
 842 }
 843
 844 int target_write_u8(struct target_s *target, u32 address, u8 value)
 845 {
 846         int retval;
 847
 848         DEBUG("address: 0x%8.8x, value: 0x%2.2x", address, value);
 849
 850         if ((retval = target->type->read_memory(target, address, 1, 1, &value)) != ERROR_OK)
 851         {
 852                 DEBUG("failed: %i", retval);
 853         }
 854
 855         return retval;
 856 }
 857
 858 int target_register_user_commands(struct command_context_s *cmd_ctx)
 859 {
 860         register_command(cmd_ctx,  NULL, "reg", handle_reg_command, COMMAND_EXEC, NULL);
 861         register_command(cmd_ctx,  NULL, "poll", handle_poll_command, COMMAND_EXEC, "poll target state");
 862         register_command(cmd_ctx,  NULL, "wait_halt", handle_wait_halt_command, COMMAND_EXEC, "wait for target halt [time (s)]");
 863         register_command(cmd_ctx,  NULL, "halt", handle_halt_command, COMMAND_EXEC, "halt target");
 864         register_command(cmd_ctx,  NULL, "resume", handle_resume_command, COMMAND_EXEC, "resume target [addr]");
 865         register_command(cmd_ctx,  NULL, "step", handle_step_command, COMMAND_EXEC, "step one instruction");
 866         register_command(cmd_ctx,  NULL, "reset", handle_reset_command, COMMAND_EXEC, "reset target [run|halt|init|run_and_halt|run_and_init]");
 867         register_command(cmd_ctx,  NULL, "soft_reset_halt", handle_soft_reset_halt_command, COMMAND_EXEC, "halt the target and do a soft reset");
 868
 869         register_command(cmd_ctx,  NULL, "mdw", handle_md_command, COMMAND_EXEC, "display memory words <addr> [count]");
 870         register_command(cmd_ctx,  NULL, "mdh", handle_md_command, COMMAND_EXEC, "display memory half-words <addr> [count]");
 871         register_command(cmd_ctx,  NULL, "mdb", handle_md_command, COMMAND_EXEC, "display memory bytes <addr> [count]");
 872
 873         register_command(cmd_ctx,  NULL, "mww", handle_mw_command, COMMAND_EXEC, "write memory word <addr> <value>");
 874         register_command(cmd_ctx,  NULL, "mwh", handle_mw_command, COMMAND_EXEC, "write memory half-word <addr> <value>");
 875         register_command(cmd_ctx,  NULL, "mwb", handle_mw_command, COMMAND_EXEC, "write memory byte <addr> <value>");
 876
 877         register_command(cmd_ctx,  NULL, "bp", handle_bp_command, COMMAND_EXEC, "set breakpoint <address> <length> [hw]");
 878         register_command(cmd_ctx,  NULL, "rbp", handle_rbp_command, COMMAND_EXEC, "remove breakpoint <adress>");
 879         register_command(cmd_ctx,  NULL, "wp", handle_wp_command, COMMAND_EXEC, "set watchpoint <address> <length> <r/w/a> [value] [mask]");
 880         register_command(cmd_ctx,  NULL, "rwp", handle_rwp_command, COMMAND_EXEC, "remove watchpoint <adress>");
 881
 882         register_command(cmd_ctx,  NULL, "load_image", handle_load_image_command, COMMAND_EXEC, "load_image <file> <address> ['bin'|'ihex'|'elf'|'s19']");
 883         register_command(cmd_ctx,  NULL, "dump_image", handle_dump_image_command, COMMAND_EXEC, "dump_image <file> <address> <size>");
 884         register_command(cmd_ctx,  NULL, "load_binary", handle_load_image_command, COMMAND_EXEC, "[DEPRECATED] load_binary <file> <address>");
 885         register_command(cmd_ctx,  NULL, "dump_binary", handle_dump_image_command, COMMAND_EXEC, "[DEPRECATED] dump_binary <file> <address> <size>");
 886
 887         target_request_register_commands(cmd_ctx);
 888
 889         return ERROR_OK;
 890 }
 891
 892 int handle_targets_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 893 {
 894         target_t *target = targets;
 895         int count = 0;
 896
 897         if (argc == 1)
 898         {
 899                 int num = strtoul(args[0], NULL, 0);
 900
 901                 while (target)
 902                 {
 903                         count++;
 904                         target = target->next;
 905                 }
 906
 907                 if (num < count)
 908                         cmd_ctx->current_target = num;
 909                 else
 910                         command_print(cmd_ctx, "%i is out of bounds, only %i targets are configured", num, count);
 911
 912                 return ERROR_OK;
 913         }
 914
 915         while (target)
 916         {
 917                 command_print(cmd_ctx, "%i: %s (%s), state: %s", count++, target->type->name, target_endianess_strings[target->endianness], target_state_strings[target->state]);
 918                 target = target->next;
 919         }
 920
 921         return ERROR_OK;
 922 }
 923
 924 int handle_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 925 {
 926         int i;
 927         int found = 0;
 928
 929         if (argc < 3)
 930         {
 931                 ERROR("target command requires at least three arguments: <type> <endianess> <reset_mode>");
 932                 exit(-1);
 933         }
 934
 935         /* search for the specified target */
 936         if (args[0] && (args[0][0] != 0))
 937         {
 938                 for (i = 0; target_types[i]; i++)
 939                 {
 940                         if (strcmp(args[0], target_types[i]->name) == 0)
 941                         {
 942                                 target_t **last_target_p = &targets;
 943
 944                                 /* register target specific commands */
 945                                 if (target_types[i]->register_commands(cmd_ctx) != ERROR_OK)
 946                                 {
 947                                         ERROR("couldn't register '%s' commands", args[0]);
 948                                         exit(-1);
 949                                 }
 950
 951                                 if (*last_target_p)
 952                                 {
 953                                         while ((*last_target_p)->next)
 954                                                 last_target_p = &((*last_target_p)->next);
 955                                         last_target_p = &((*last_target_p)->next);
 956                                 }
 957
 958                                 *last_target_p = malloc(sizeof(target_t));
 959
 960                                 (*last_target_p)->type = target_types[i];
 961
 962                                 if (strcmp(args[1], "big") == 0)
 963                                         (*last_target_p)->endianness = TARGET_BIG_ENDIAN;
 964                                 else if (strcmp(args[1], "little") == 0)
 965                                         (*last_target_p)->endianness = TARGET_LITTLE_ENDIAN;
 966                                 else
 967                                 {
 968                                         ERROR("endianness must be either 'little' or 'big', not '%s'", args[1]);
 969                                         exit(-1);
 970                                 }
 971
 972                                 /* what to do on a target reset */
 973                                 if (strcmp(args[2], "reset_halt") == 0)
 974                                         (*last_target_p)->reset_mode = RESET_HALT;
 975                                 else if (strcmp(args[2], "reset_run") == 0)
 976                                         (*last_target_p)->reset_mode = RESET_RUN;
 977                                 else if (strcmp(args[2], "reset_init") == 0)
 978                                         (*last_target_p)->reset_mode = RESET_INIT;
 979                                 else if (strcmp(args[2], "run_and_halt") == 0)
 980                                         (*last_target_p)->reset_mode = RESET_RUN_AND_HALT;
 981                                 else if (strcmp(args[2], "run_and_init") == 0)
 982                                         (*last_target_p)->reset_mode = RESET_RUN_AND_INIT;
 983                                 else
 984                                 {
 985                                         ERROR("unknown target startup mode %s", args[2]);
 986                                         exit(-1);
 987                                 }
 988                                 (*last_target_p)->run_and_halt_time = 1000; /* default 1s */
 989
 990                                 (*last_target_p)->reset_script = NULL;
 991                                 (*last_target_p)->post_halt_script = NULL;
 992                                 (*last_target_p)->pre_resume_script = NULL;
 993
 994                                 (*last_target_p)->working_area = 0x0;
 995                                 (*last_target_p)->working_area_size = 0x0;
 996                                 (*last_target_p)->working_areas = NULL;
 997                                 (*last_target_p)->backup_working_area = 0;
 998
 999                                 (*last_target_p)->state = TARGET_UNKNOWN;
1000                                 (*last_target_p)->reg_cache = NULL;
1001                                 (*last_target_p)->breakpoints = NULL;
1002                                 (*last_target_p)->watchpoints = NULL;
1003                                 (*last_target_p)->next = NULL;
1004                                 (*last_target_p)->arch_info = NULL;
1005
1006                                 /* initialize trace information */
1007                                 (*last_target_p)->trace_info = malloc(sizeof(trace_t));
1008                                 (*last_target_p)->trace_info->num_trace_points = 0;
1009                                 (*last_target_p)->trace_info->trace_points = NULL;
1010                                 (*last_target_p)->trace_info->trace_history_size = 0;
1011                                 (*last_target_p)->trace_info->trace_history = NULL;
1012
1013                                 (*last_target_p)->type->target_command(cmd_ctx, cmd, args, argc, *last_target_p);
1014
1015                                 found = 1;
1016                                 break;
1017                         }
1018                 }
1019         }
1020
1021         /* no matching target found */
1022         if (!found)
1023         {
1024                 ERROR("target '%s' not found", args[0]);
1025                 exit(-1);
1026         }
1027
1028         return ERROR_OK;
1029 }
1030
1031 /* usage: target_script <target#> <event> <script_file> */
1032 int handle_target_script_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1033 {
1034         target_t *target = NULL;
1035
1036         if (argc < 3)
1037         {
1038                 ERROR("incomplete target_script command");
1039                 exit(-1);
1040         }
1041
1042         target = get_target_by_num(strtoul(args[0], NULL, 0));
1043
1044         if (!target)
1045         {
1046                 ERROR("target number '%s' not defined", args[0]);
1047                 exit(-1);
1048         }
1049
1050         if (strcmp(args[1], "reset") == 0)
1051         {
1052                 if (target->reset_script)
1053                         free(target->reset_script);
1054                 target->reset_script = strdup(args[2]);
1055         }
1056         else if (strcmp(args[1], "post_halt") == 0)
1057         {
1058                 if (target->post_halt_script)
1059                         free(target->post_halt_script);
1060                 target->post_halt_script = strdup(args[2]);
1061         }
1062         else if (strcmp(args[1], "pre_resume") == 0)
1063         {
1064                 if (target->pre_resume_script)
1065                         free(target->pre_resume_script);
1066                 target->pre_resume_script = strdup(args[2]);
1067         }
1068         else
1069         {
1070                 ERROR("unknown event type: '%s", args[1]);
1071                 exit(-1);
1072         }
1073
1074         return ERROR_OK;
1075 }
1076
1077 int handle_run_and_halt_time_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1078 {
1079         target_t *target = NULL;
1080
1081         if (argc < 2)
1082         {
1083                 ERROR("incomplete run_and_halt_time command");
1084                 exit(-1);
1085         }
1086
1087         target = get_target_by_num(strtoul(args[0], NULL, 0));
1088
1089         if (!target)
1090         {
1091                 ERROR("target number '%s' not defined", args[0]);
1092                 exit(-1);
1093         }
1094
1095         target->run_and_halt_time = strtoul(args[1], NULL, 0);
1096
1097         return ERROR_OK;
1098 }
1099
1100 int handle_working_area_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1101 {
1102         target_t *target = NULL;
1103
1104         if (argc < 4)
1105         {
1106                 ERROR("incomplete working_area command. usage: working_area <target#> <address> <size> <'backup'|'nobackup'>");
1107                 exit(-1);
1108         }
1109
1110         target = get_target_by_num(strtoul(args[0], NULL, 0));
1111
1112         if (!target)
1113         {
1114                 ERROR("target number '%s' not defined", args[0]);
1115                 exit(-1);
1116         }
1117
1118         target->working_area = strtoul(args[1], NULL, 0);
1119         target->working_area_size = strtoul(args[2], NULL, 0);
1120
1121         if (strcmp(args[3], "backup") == 0)
1122         {
1123                 target->backup_working_area = 1;
1124         }
1125         else if (strcmp(args[3], "nobackup") == 0)
1126         {
1127                 target->backup_working_area = 0;
1128         }
1129         else
1130         {
1131                 ERROR("unrecognized <backup|nobackup> argument (%s)", args[3]);
1132                 exit(-1);
1133         }
1134
1135         return ERROR_OK;
1136 }
1137
1138
1139 /* process target state changes */
1140 int handle_target(void *priv)
1141 {
1142         int retval;
1143         target_t *target = targets;
1144
1145         while (target)
1146         {
1147                 /* only poll if target isn't already halted */
1148                 if (target->state != TARGET_HALTED)
1149                 {
1150                         if (target_continous_poll)
1151                                 if ((retval = target->type->poll(target)) < 0)
1152                                 {
1153                                         ERROR("couldn't poll target, exiting");
1154                                         exit(-1);
1155                                 }
1156                 }
1157
1158                 target = target->next;
1159         }
1160
1161         return ERROR_OK;
1162 }
1163
1164 int handle_reg_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1165 {
1166         target_t *target;
1167         reg_t *reg = NULL;
1168         int count = 0;
1169         char *value;
1170
1171         DEBUG("-");
1172
1173         target = get_current_target(cmd_ctx);
1174
1175         /* list all available registers for the current target */
1176         if (argc == 0)
1177         {
1178                 reg_cache_t *cache = target->reg_cache;
1179
1180                 count = 0;
1181                 while(cache)
1182                 {
1183                         int i;
1184                         for (i = 0; i < cache->num_regs; i++)
1185                         {
1186                                 value = buf_to_str(cache->reg_list[i].value, cache->reg_list[i].size, 16);
1187                                 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);
1188                                 free(value);
1189                         }
1190                         cache = cache->next;
1191                 }
1192
1193                 return ERROR_OK;
1194         }
1195
1196         /* access a single register by its ordinal number */
1197         if ((args[0][0] >= '0') && (args[0][0] <= '9'))
1198         {
1199                 int num = strtoul(args[0], NULL, 0);
1200                 reg_cache_t *cache = target->reg_cache;
1201
1202                 count = 0;
1203                 while(cache)
1204                 {
1205                         int i;
1206                         for (i = 0; i < cache->num_regs; i++)
1207                         {
1208                                 if (count++ == num)
1209                                 {
1210                                         reg = &cache->reg_list[i];
1211                                         break;
1212                                 }
1213                         }
1214                         if (reg)
1215                                 break;
1216                         cache = cache->next;
1217                 }
1218
1219                 if (!reg)
1220                 {
1221                         command_print(cmd_ctx, "%i is out of bounds, the current target has only %i registers (0 - %i)", num, count, count - 1);
1222                         return ERROR_OK;
1223                 }
1224         } else /* access a single register by its name */
1225         {
1226                 reg = register_get_by_name(target->reg_cache, args[0], 1);
1227
1228                 if (!reg)
1229                 {
1230                         command_print(cmd_ctx, "register %s not found in current target", args[0]);
1231                         return ERROR_OK;
1232                 }
1233         }
1234
1235         /* display a register */
1236         if ((argc == 1) || ((argc == 2) && !((args[1][0] >= '0') && (args[1][0] <= '9'))))
1237         {
1238                 if ((argc == 2) && (strcmp(args[1], "force") == 0))
1239                         reg->valid = 0;
1240
1241                 if (reg->valid == 0)
1242                 {
1243                         reg_arch_type_t *arch_type = register_get_arch_type(reg->arch_type);
1244                         if (arch_type == NULL)
1245                         {
1246                                 ERROR("BUG: encountered unregistered arch type");
1247                                 return ERROR_OK;
1248                         }
1249                         arch_type->get(reg);
1250                 }
1251                 value = buf_to_str(reg->value, reg->size, 16);
1252                 command_print(cmd_ctx, "%s (/%i): 0x%s", reg->name, reg->size, value);
1253                 free(value);
1254                 return ERROR_OK;
1255         }
1256
1257         /* set register value */
1258         if (argc == 2)
1259         {
1260                 u8 *buf = malloc(CEIL(reg->size, 8));
1261                 str_to_buf(args[1], strlen(args[1]), buf, reg->size, 0);
1262
1263                 reg_arch_type_t *arch_type = register_get_arch_type(reg->arch_type);
1264                 if (arch_type == NULL)
1265                 {
1266                         ERROR("BUG: encountered unregistered arch type");
1267                         return ERROR_OK;
1268                 }
1269
1270                 arch_type->set(reg, buf);
1271
1272                 value = buf_to_str(reg->value, reg->size, 16);
1273                 command_print(cmd_ctx, "%s (/%i): 0x%s", reg->name, reg->size, value);
1274                 free(value);
1275
1276                 free(buf);
1277
1278                 return ERROR_OK;
1279         }
1280
1281         command_print(cmd_ctx, "usage: reg <#|name> [value]");
1282
1283         return ERROR_OK;
1284 }
1285
1286 int handle_poll_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1287 {
1288         target_t *target = get_current_target(cmd_ctx);
1289         char buffer[512];
1290
1291         if (argc == 0)
1292         {
1293                 command_print(cmd_ctx, "target state: %s", target_state_strings[target->type->poll(target)]);
1294                 if (target->state == TARGET_HALTED)
1295                 {
1296                         target->type->arch_state(target, buffer, 512);
1297                         buffer[511] = 0;
1298                         command_print(cmd_ctx, "%s", buffer);
1299                 }
1300         }
1301         else
1302         {
1303                 if (strcmp(args[0], "on") == 0)
1304                 {
1305                         target_continous_poll = 1;
1306                 }
1307                 else if (strcmp(args[0], "off") == 0)
1308                 {
1309                         target_continous_poll = 0;
1310                 }
1311         }
1312
1313
1314         return ERROR_OK;
1315 }
1316
1317 int handle_wait_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1318 {
1319         target_t *target = get_current_target(cmd_ctx);
1320         struct timeval timeout, now;
1321
1322         gettimeofday(&timeout, NULL);
1323         if (!argc)
1324                 timeval_add_time(&timeout, 5, 0);
1325         else {
1326                 char *end;
1327
1328                 timeval_add_time(&timeout, strtoul(args[0], &end, 0), 0);
1329                 if (*end) {
1330                         command_print(cmd_ctx, "usage: wait_halt [seconds]");
1331                         return ERROR_OK;
1332                 }
1333         }
1334
1335         command_print(cmd_ctx, "waiting for target halted...");
1336
1337         while(target->type->poll(target))
1338         {
1339                 if (target->state == TARGET_HALTED)
1340                 {
1341                         command_print(cmd_ctx, "target halted");
1342                         break;
1343                 }
1344                 target_call_timer_callbacks();
1345
1346                 gettimeofday(&now, NULL);
1347                 if ((now.tv_sec >= timeout.tv_sec) && (now.tv_usec >= timeout.tv_usec))
1348                 {
1349                         command_print(cmd_ctx, "timed out while waiting for target halt");
1350                         ERROR("timed out while waiting for target halt");
1351                         break;
1352                 }
1353         }
1354
1355         return ERROR_OK;
1356 }
1357
1358 int handle_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1359 {
1360         int retval;
1361         target_t *target = get_current_target(cmd_ctx);
1362
1363         DEBUG("-");
1364
1365         command_print(cmd_ctx, "requesting target halt...");
1366
1367         if ((retval = target->type->halt(target)) != ERROR_OK)
1368         {
1369                 switch (retval)
1370                 {
1371                         case ERROR_TARGET_ALREADY_HALTED:
1372                                 command_print(cmd_ctx, "target already halted");
1373                                 break;
1374                         case ERROR_TARGET_TIMEOUT:
1375                                 command_print(cmd_ctx, "target timed out... shutting down");
1376                                 exit(-1);
1377                         default:
1378                                 command_print(cmd_ctx, "unknown error... shutting down");
1379                                 exit(-1);
1380                 }
1381         }
1382
1383         return ERROR_OK;
1384
1385 }
1386
1387 /* what to do on daemon startup */
1388 int handle_daemon_startup_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1389 {
1390         if (argc == 1)
1391         {
1392                 if (strcmp(args[0], "attach") == 0)
1393                 {
1394                         startup_mode = DAEMON_ATTACH;
1395                         return ERROR_OK;
1396                 }
1397                 else if (strcmp(args[0], "reset") == 0)
1398                 {
1399                         startup_mode = DAEMON_RESET;
1400                         return ERROR_OK;
1401                 }
1402         }
1403
1404         WARNING("invalid daemon_startup configuration directive: %s", args[0]);
1405         return ERROR_OK;
1406
1407 }
1408
1409 int handle_soft_reset_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1410 {
1411         target_t *target = get_current_target(cmd_ctx);
1412         int retval;
1413
1414         command_print(cmd_ctx, "requesting target halt and executing a soft reset");
1415
1416         if ((retval = target->type->soft_reset_halt(target)) != ERROR_OK)
1417         {
1418                 switch (retval)
1419                 {
1420                         case ERROR_TARGET_TIMEOUT:
1421                                 command_print(cmd_ctx, "target timed out... shutting down");
1422                                 exit(-1);
1423                         default:
1424                                 command_print(cmd_ctx, "unknown error... shutting down");
1425                                 exit(-1);
1426                 }
1427         }
1428
1429         return ERROR_OK;
1430 }
1431
1432 int handle_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1433 {
1434         target_t *target = get_current_target(cmd_ctx);
1435         enum target_reset_mode reset_mode = RESET_RUN;
1436
1437         DEBUG("-");
1438
1439         if (argc >= 1)
1440         {
1441                 if (strcmp("run", args[0]) == 0)
1442                         reset_mode = RESET_RUN;
1443                 else if (strcmp("halt", args[0]) == 0)
1444                         reset_mode = RESET_HALT;
1445                 else if (strcmp("init", args[0]) == 0)
1446                         reset_mode = RESET_INIT;
1447                 else if (strcmp("run_and_halt", args[0]) == 0)
1448                 {
1449                         reset_mode = RESET_RUN_AND_HALT;
1450                         if (argc >= 2)
1451                         {
1452                                 target->run_and_halt_time = strtoul(args[1], NULL, 0);
1453                         }
1454                 }
1455                 else if (strcmp("run_and_init", args[0]) == 0)
1456                 {
1457                         reset_mode = RESET_RUN_AND_INIT;
1458                         if (argc >= 2)
1459                         {
1460                                 target->run_and_halt_time = strtoul(args[1], NULL, 0);
1461                         }
1462                 }
1463                 else
1464                 {
1465                         command_print(cmd_ctx, "usage: reset ['run', 'halt', 'init', 'run_and_halt', 'run_and_init]");
1466                         return ERROR_OK;
1467                 }
1468                 target->reset_mode = reset_mode;
1469         }
1470
1471         target_process_reset(cmd_ctx);
1472
1473         return ERROR_OK;
1474 }
1475
1476 int handle_resume_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1477 {
1478         int retval;
1479         target_t *target = get_current_target(cmd_ctx);
1480
1481         DEBUG("-");
1482
1483         if (argc == 0)
1484                 retval = target->type->resume(target, 1, 0, 1, 0); /* current pc, addr = 0, handle breakpoints, not debugging */
1485         else if (argc == 1)
1486                 retval = target->type->resume(target, 0, strtoul(args[0], NULL, 0), 1, 0); /* addr = args[0], handle breakpoints, not debugging */
1487         else
1488         {
1489                 command_print(cmd_ctx, "usage: resume [address]");
1490                 return ERROR_OK;
1491         }
1492
1493         if (retval != ERROR_OK)
1494         {
1495                 switch (retval)
1496                 {
1497                         case ERROR_TARGET_NOT_HALTED:
1498                                 command_print(cmd_ctx, "target not halted");
1499                                 break;
1500                         default:
1501                                 command_print(cmd_ctx, "unknown error... shutting down");
1502                                 exit(-1);
1503                 }
1504         }
1505
1506         return ERROR_OK;
1507 }
1508
1509 int handle_step_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1510 {
1511         target_t *target = get_current_target(cmd_ctx);
1512
1513         DEBUG("-");
1514
1515         if (argc == 0)
1516                 target->type->step(target, 1, 0, 1); /* current pc, addr = 0, handle breakpoints */
1517
1518         if (argc == 1)
1519                 target->type->step(target, 0, strtoul(args[0], NULL, 0), 1); /* addr = args[0], handle breakpoints */
1520
1521         return ERROR_OK;
1522 }
1523
1524 int handle_md_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1525 {
1526         int count = 1;
1527         int size = 4;
1528         u32 address = 0;
1529         int i;
1530
1531         char output[128];
1532         int output_len;
1533
1534         int retval;
1535
1536         u8 *buffer;
1537         target_t *target = get_current_target(cmd_ctx);
1538
1539         if (argc < 1)
1540                 return ERROR_OK;
1541
1542         if (argc == 2)
1543                 count = strtoul(args[1], NULL, 0);
1544
1545         address = strtoul(args[0], NULL, 0);
1546
1547
1548         switch (cmd[2])
1549         {
1550                 case 'w':
1551                         size = 4;
1552                         break;
1553                 case 'h':
1554                         size = 2;
1555                         break;
1556                 case 'b':
1557                         size = 1;
1558                         break;
1559                 default:
1560                         return ERROR_OK;
1561         }
1562
1563         buffer = calloc(count, size);
1564         if ((retval  = target->type->read_memory(target, address, size, count, buffer)) != ERROR_OK)
1565         {
1566                 switch (retval)
1567                 {
1568                         case ERROR_TARGET_UNALIGNED_ACCESS:
1569                                 command_print(cmd_ctx, "error: address not aligned");
1570                                 break;
1571                         case ERROR_TARGET_NOT_HALTED:
1572                                 command_print(cmd_ctx, "error: target must be halted for memory accesses");
1573                                 break;
1574                         case ERROR_TARGET_DATA_ABORT:
1575                                 command_print(cmd_ctx, "error: access caused data abort, system possibly corrupted");
1576                                 break;
1577                         default:
1578                                 command_print(cmd_ctx, "error: unknown error");
1579                                 break;
1580                 }
1581                 return ERROR_OK;
1582         }
1583
1584         output_len = 0;
1585
1586         for (i = 0; i < count; i++)
1587         {
1588                 if (i%8 == 0)
1589                         output_len += snprintf(output + output_len, 128 - output_len, "0x%8.8x: ", address + (i*size));
1590
1591                 switch (size)
1592                 {
1593                         case 4:
1594                                 output_len += snprintf(output + output_len, 128 - output_len, "%8.8x ", target_buffer_get_u32(target, &buffer[i*4]));
1595                                 break;
1596                         case 2:
1597                                 output_len += snprintf(output + output_len, 128 - output_len, "%4.4x ", target_buffer_get_u16(target, &buffer[i*2]));
1598                                 break;
1599                         case 1:
1600                                 output_len += snprintf(output + output_len, 128 - output_len, "%2.2x ", buffer[i*1]);
1601                                 break;
1602                 }
1603
1604                 if ((i%8 == 7) || (i == count - 1))
1605                 {
1606                         command_print(cmd_ctx, output);
1607                         output_len = 0;
1608                 }
1609         }
1610
1611         free(buffer);
1612
1613         return ERROR_OK;
1614 }
1615
1616 int handle_mw_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1617 {
1618         u32 address = 0;
1619         u32 value = 0;
1620         int retval;
1621         target_t *target = get_current_target(cmd_ctx);
1622         u8 value_buf[4];
1623
1624         if (argc < 2)
1625                 return ERROR_OK;
1626
1627         address = strtoul(args[0], NULL, 0);
1628         value = strtoul(args[1], NULL, 0);
1629
1630         switch (cmd[2])
1631         {
1632                 case 'w':
1633                         target_buffer_set_u32(target, value_buf, value);
1634                         retval = target->type->write_memory(target, address, 4, 1, value_buf);
1635                         break;
1636                 case 'h':
1637                         target_buffer_set_u16(target, value_buf, value);
1638                         retval = target->type->write_memory(target, address, 2, 1, value_buf);
1639                         break;
1640                 case 'b':
1641                         value_buf[0] = value;
1642                         retval = target->type->write_memory(target, address, 1, 1, value_buf);
1643                         break;
1644                 default:
1645                         return ERROR_OK;
1646         }
1647
1648         switch (retval)
1649         {
1650                 case ERROR_TARGET_UNALIGNED_ACCESS:
1651                         command_print(cmd_ctx, "error: address not aligned");
1652                         break;
1653                 case ERROR_TARGET_DATA_ABORT:
1654                         command_print(cmd_ctx, "error: access caused data abort, system possibly corrupted");
1655                         break;
1656                 case ERROR_TARGET_NOT_HALTED:
1657                         command_print(cmd_ctx, "error: target must be halted for memory accesses");
1658                         break;
1659                 case ERROR_OK:
1660                         break;
1661                 default:
1662                         command_print(cmd_ctx, "error: unknown error");
1663                         break;
1664         }
1665
1666         return ERROR_OK;
1667
1668 }
1669
1670 int handle_load_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1671 {
1672         u8 *buffer;
1673         u32 buf_cnt;
1674         u32 image_size;
1675         int i;
1676         int retval;
1677
1678         image_t image;
1679
1680         duration_t duration;
1681         char *duration_text;
1682
1683         target_t *target = get_current_target(cmd_ctx);
1684
1685         if (argc < 1)
1686         {
1687                 command_print(cmd_ctx, "usage: load_image <filename> [address] [type]");
1688                 return ERROR_OK;
1689         }
1690
1691         /* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */
1692         if (argc >= 2)
1693         {
1694                 image.base_address_set = 1;
1695                 image.base_address = strtoul(args[1], NULL, 0);
1696         }
1697         else
1698         {
1699                 image.base_address_set = 0;
1700         }
1701
1702         image.start_address_set = 0;
1703
1704         duration_start_measure(&duration);
1705
1706         if (image_open(&image, args[0], (argc >= 3) ? args[2] : NULL) != ERROR_OK)
1707         {
1708                 command_print(cmd_ctx, "load_image error: %s", image.error_str);
1709                 return ERROR_OK;
1710         }
1711
1712         image_size = 0x0;
1713         for (i = 0; i < image.num_sections; i++)
1714         {
1715                 buffer = malloc(image.sections[i].size);
1716                 if ((retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt)) != ERROR_OK)
1717                 {
1718                         ERROR("image_read_section failed with error code: %i", retval);
1719                         command_print(cmd_ctx, "image reading failed, download aborted");
1720                         free(buffer);
1721                         image_close(&image);
1722                         return ERROR_OK;
1723                 }
1724                 target_write_buffer(target, image.sections[i].base_address, buf_cnt, buffer);
1725                 image_size += buf_cnt;
1726                 command_print(cmd_ctx, "%u byte written at address 0x%8.8x", buf_cnt, image.sections[i].base_address);
1727
1728                 free(buffer);
1729         }
1730
1731         duration_stop_measure(&duration, &duration_text);
1732         command_print(cmd_ctx, "downloaded %u byte in %s", image_size, duration_text);
1733         free(duration_text);
1734
1735         image_close(&image);
1736
1737         return ERROR_OK;
1738
1739 }
1740
1741 int handle_dump_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1742 {
1743         fileio_t fileio;
1744
1745         u32 address;
1746         u32 size;
1747         u8 buffer[560];
1748
1749         duration_t duration;
1750         char *duration_text;
1751
1752         target_t *target = get_current_target(cmd_ctx);
1753
1754         if (argc != 3)
1755         {
1756                 command_print(cmd_ctx, "usage: dump_image <filename> <address> <size>");
1757                 return ERROR_OK;
1758         }
1759
1760         address = strtoul(args[1], NULL, 0);
1761         size = strtoul(args[2], NULL, 0);
1762
1763         if ((address & 3) || (size & 3))
1764         {
1765                 command_print(cmd_ctx, "only 32-bit aligned address and size are supported");
1766                 return ERROR_OK;
1767         }
1768
1769         if (fileio_open(&fileio, args[0], FILEIO_WRITE, FILEIO_BINARY) != ERROR_OK)
1770         {
1771                 command_print(cmd_ctx, "dump_image error: %s", fileio.error_str);
1772                 return ERROR_OK;
1773         }
1774
1775         duration_start_measure(&duration);
1776
1777         while (size > 0)
1778         {
1779                 u32 size_written;
1780                 u32 this_run_size = (size > 560) ? 560 : size;
1781
1782                 target->type->read_memory(target, address, 4, this_run_size / 4, buffer);
1783                 fileio_write(&fileio, this_run_size, buffer, &size_written);
1784
1785                 size -= this_run_size;
1786                 address += this_run_size;
1787         }
1788
1789         fileio_close(&fileio);
1790
1791         duration_stop_measure(&duration, &duration_text);
1792         command_print(cmd_ctx, "dumped %"PRIi64" byte in %s", fileio.size, duration_text);
1793         free(duration_text);
1794
1795         return ERROR_OK;
1796
1797 }
1798
1799 int handle_bp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1800 {
1801         int retval;
1802         target_t *target = get_current_target(cmd_ctx);
1803
1804         if (argc == 0)
1805         {
1806                 breakpoint_t *breakpoint = target->breakpoints;
1807
1808                 while (breakpoint)
1809                 {
1810                         if (breakpoint->type == BKPT_SOFT)
1811                         {
1812                                 char* buf = buf_to_str(breakpoint->orig_instr, breakpoint->length, 16);
1813                                 command_print(cmd_ctx, "0x%8.8x, 0x%x, %i, 0x%s", breakpoint->address, breakpoint->length, breakpoint->set, buf);
1814                                 free(buf);
1815                         }
1816                         else
1817                         {
1818                                 command_print(cmd_ctx, "0x%8.8x, 0x%x, %i", breakpoint->address, breakpoint->length, breakpoint->set);
1819                         }
1820                         breakpoint = breakpoint->next;
1821                 }
1822         }
1823         else if (argc >= 2)
1824         {
1825                 int hw = BKPT_SOFT;
1826                 u32 length = 0;
1827
1828                 length = strtoul(args[1], NULL, 0);
1829
1830                 if (argc >= 3)
1831                         if (strcmp(args[2], "hw") == 0)
1832                                 hw = BKPT_HARD;
1833
1834                 if ((retval = breakpoint_add(target, strtoul(args[0], NULL, 0), length, hw)) != ERROR_OK)
1835                 {
1836                         switch (retval)
1837                         {
1838                                 case ERROR_TARGET_NOT_HALTED:
1839                                         command_print(cmd_ctx, "target must be halted to set breakpoints");
1840                                         break;
1841                                 case ERROR_TARGET_RESOURCE_NOT_AVAILABLE:
1842                                         command_print(cmd_ctx, "no more breakpoints available");
1843                                         break;
1844                                 default:
1845                                         command_print(cmd_ctx, "unknown error, breakpoint not set");
1846                                         break;
1847                         }
1848                 }
1849                 else
1850                 {
1851                         command_print(cmd_ctx, "breakpoint added at address 0x%8.8x", strtoul(args[0], NULL, 0));
1852                 }
1853         }
1854         else
1855         {
1856                 command_print(cmd_ctx, "usage: bp <address> <length> ['hw']");
1857         }
1858
1859         return ERROR_OK;
1860 }
1861
1862 int handle_rbp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1863 {
1864         target_t *target = get_current_target(cmd_ctx);
1865
1866         if (argc > 0)
1867                 breakpoint_remove(target, strtoul(args[0], NULL, 0));
1868
1869         return ERROR_OK;
1870 }
1871
1872 int handle_wp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1873 {
1874         target_t *target = get_current_target(cmd_ctx);
1875         int retval;
1876
1877         if (argc == 0)
1878         {
1879                 watchpoint_t *watchpoint = target->watchpoints;
1880
1881                 while (watchpoint)
1882                 {
1883                         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);
1884                         watchpoint = watchpoint->next;
1885                 }
1886         }
1887         else if (argc >= 2)
1888         {
1889                 enum watchpoint_rw type = WPT_ACCESS;
1890                 u32 data_value = 0x0;
1891                 u32 data_mask = 0xffffffff;
1892
1893                 if (argc >= 3)
1894                 {
1895                         switch(args[2][0])
1896                         {
1897                                 case 'r':
1898                                         type = WPT_READ;
1899                                         break;
1900                                 case 'w':
1901                                         type = WPT_WRITE;
1902                                         break;
1903                                 case 'a':
1904                                         type = WPT_ACCESS;
1905                                         break;
1906                                 default:
1907                                         command_print(cmd_ctx, "usage: wp <address> <length> [r/w/a] [value] [mask]");
1908                                         return ERROR_OK;
1909                         }
1910                 }
1911                 if (argc >= 4)
1912                 {
1913                         data_value = strtoul(args[3], NULL, 0);
1914                 }
1915                 if (argc >= 5)
1916                 {
1917                         data_mask = strtoul(args[4], NULL, 0);
1918                 }
1919
1920                 if ((retval = watchpoint_add(target, strtoul(args[0], NULL, 0),
1921                                 strtoul(args[1], NULL, 0), type, data_value, data_mask)) != ERROR_OK)
1922                 {
1923                         switch (retval)
1924                         {
1925                                 case ERROR_TARGET_NOT_HALTED:
1926                                         command_print(cmd_ctx, "target must be halted to set watchpoints");
1927                                         break;
1928                                 case ERROR_TARGET_RESOURCE_NOT_AVAILABLE:
1929                                         command_print(cmd_ctx, "no more watchpoints available");
1930                                         break;
1931                                 default:
1932                                         command_print(cmd_ctx, "unknown error, watchpoint not set");
1933                                         break;
1934                         }
1935                 }
1936         }
1937         else
1938         {
1939                 command_print(cmd_ctx, "usage: wp <address> <length> [r/w/a] [value] [mask]");
1940         }
1941
1942         return ERROR_OK;
1943 }
1944
1945 int handle_rwp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1946 {
1947         target_t *target = get_current_target(cmd_ctx);
1948
1949         if (argc > 0)
1950                 watchpoint_remove(target, strtoul(args[0], NULL, 0));
1951
1952         return ERROR_OK;
1953 }
1954