git.sur5r.net Git - openocd/blob - src/target/target.c

   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include "replacements.h"
  25 #include "target.h"
  26 #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
  53 int handle_target_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_verify_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  73 int handle_bp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  74 int handle_rbp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  75 int handle_wp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  76 int handle_rwp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  77 int handle_virt2phys_command(command_context_t *cmd_ctx, char *cmd, char **args, int argc);
  78 int handle_profile_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  79
  80 /* targets
  81  */
  82 extern target_type_t arm7tdmi_target;
  83 extern target_type_t arm720t_target;
  84 extern target_type_t arm9tdmi_target;
  85 extern target_type_t arm920t_target;
  86 extern target_type_t arm966e_target;
  87 extern target_type_t arm926ejs_target;
  88 extern target_type_t feroceon_target;
  89 extern target_type_t xscale_target;
  90 extern target_type_t cortexm3_target;
  91 extern target_type_t arm11_target;
  92
  93 target_type_t *target_types[] =
  94 {
  95         &arm7tdmi_target,
  96         &arm9tdmi_target,
  97         &arm920t_target,
  98         &arm720t_target,
  99         &arm966e_target,
 100         &arm926ejs_target,
 101         &feroceon_target,
 102         &xscale_target,
 103         &cortexm3_target,
 104         &arm11_target,
 105         NULL,
 106 };
 107
 108 target_t *targets = NULL;
 109 target_event_callback_t *target_event_callbacks = NULL;
 110 target_timer_callback_t *target_timer_callbacks = NULL;
 111
 112 char *target_state_strings[] =
 113 {
 114         "unknown",
 115         "running",
 116         "halted",
 117         "reset",
 118         "debug_running",
 119 };
 120
 121 char *target_debug_reason_strings[] =
 122 {
 123         "debug request", "breakpoint", "watchpoint",
 124         "watchpoint and breakpoint", "single step",
 125         "target not halted", "undefined"
 126 };
 127
 128 char *target_endianess_strings[] =
 129 {
 130         "big endian",
 131         "little endian",
 132 };
 133
 134 static int target_continous_poll = 1;
 135
 136 /* read a u32 from a buffer in target memory endianness */
 137 u32 target_buffer_get_u32(target_t *target, u8 *buffer)
 138 {
 139         if (target->endianness == TARGET_LITTLE_ENDIAN)
 140                 return le_to_h_u32(buffer);
 141         else
 142                 return be_to_h_u32(buffer);
 143 }
 144
 145 /* read a u16 from a buffer in target memory endianness */
 146 u16 target_buffer_get_u16(target_t *target, u8 *buffer)
 147 {
 148         if (target->endianness == TARGET_LITTLE_ENDIAN)
 149                 return le_to_h_u16(buffer);
 150         else
 151                 return be_to_h_u16(buffer);
 152 }
 153
 154 /* write a u32 to a buffer in target memory endianness */
 155 void target_buffer_set_u32(target_t *target, u8 *buffer, u32 value)
 156 {
 157         if (target->endianness == TARGET_LITTLE_ENDIAN)
 158                 h_u32_to_le(buffer, value);
 159         else
 160                 h_u32_to_be(buffer, value);
 161 }
 162
 163 /* write a u16 to a buffer in target memory endianness */
 164 void target_buffer_set_u16(target_t *target, u8 *buffer, u16 value)
 165 {
 166         if (target->endianness == TARGET_LITTLE_ENDIAN)
 167                 h_u16_to_le(buffer, value);
 168         else
 169                 h_u16_to_be(buffer, value);
 170 }
 171
 172 /* returns a pointer to the n-th configured target */
 173 target_t* get_target_by_num(int num)
 174 {
 175         target_t *target = targets;
 176         int i = 0;
 177
 178         while (target)
 179         {
 180                 if (num == i)
 181                         return target;
 182                 target = target->next;
 183                 i++;
 184         }
 185
 186         return NULL;
 187 }
 188
 189 int get_num_by_target(target_t *query_target)
 190 {
 191         target_t *target = targets;
 192         int i = 0;
 193
 194         while (target)
 195         {
 196                 if (target == query_target)
 197                         return i;
 198                 target = target->next;
 199                 i++;
 200         }
 201
 202         return -1;
 203 }
 204
 205 target_t* get_current_target(command_context_t *cmd_ctx)
 206 {
 207         target_t *target = get_target_by_num(cmd_ctx->current_target);
 208
 209         if (target == NULL)
 210         {
 211                 LOG_ERROR("BUG: current_target out of bounds");
 212                 exit(-1);
 213         }
 214
 215         return target;
 216 }
 217
 218 /* Process target initialization, when target entered debug out of reset
 219  * the handler is unregistered at the end of this function, so it's only called once
 220  */
 221 int target_init_handler(struct target_s *target, enum target_event event, void *priv)
 222 {
 223         FILE *script;
 224         struct command_context_s *cmd_ctx = priv;
 225
 226         if ((event == TARGET_EVENT_HALTED) && (target->reset_script))
 227         {
 228                 target_unregister_event_callback(target_init_handler, priv);
 229
 230                 script = open_file_from_path(target->reset_script, "r");
 231                 if (!script)
 232                 {
 233                         LOG_ERROR("couldn't open script file %s", target->reset_script);
 234                                 return ERROR_OK;
 235                 }
 236
 237                 LOG_INFO("executing reset script '%s'", target->reset_script);
 238                 command_run_file(cmd_ctx, script, COMMAND_EXEC);
 239                 fclose(script);
 240
 241                 jtag_execute_queue();
 242         }
 243
 244         return ERROR_OK;
 245 }
 246
 247 int target_run_and_halt_handler(void *priv)
 248 {
 249         target_t *target = priv;
 250
 251         target_halt(target);
 252
 253         return ERROR_OK;
 254 }
 255
 256 int target_poll(struct target_s *target)
 257 {
 258         /* We can't poll until after examine */
 259         if (!target->type->examined)
 260         {
 261                 /* Fail silently lest we pollute the log */
 262                 return ERROR_FAIL;
 263         }
 264         return target->type->poll(target);
 265 }
 266
 267 int target_halt(struct target_s *target)
 268 {
 269         /* We can't poll until after examine */
 270         if (!target->type->examined)
 271         {
 272                 LOG_ERROR("Target not examined yet");
 273                 return ERROR_FAIL;
 274         }
 275         return target->type->halt(target);
 276 }
 277
 278 int target_resume(struct target_s *target, int current, u32 address, int handle_breakpoints, int debug_execution)
 279 {
 280         /* We can't poll until after examine */
 281         if (!target->type->examined)
 282         {
 283                 LOG_ERROR("Target not examined yet");
 284                 return ERROR_FAIL;
 285         }
 286         return target->type->resume(target, current, address, handle_breakpoints, debug_execution);
 287 }
 288
 289
 290 int target_process_reset(struct command_context_s *cmd_ctx)
 291 {
 292         int retval = ERROR_OK;
 293         target_t *target;
 294         struct timeval timeout, now;
 295
 296         jtag->speed(jtag_speed);
 297
 298         if ((retval = jtag_init_reset(cmd_ctx)) != ERROR_OK)
 299                 return retval;
 300
 301         /* First time this is executed after launching OpenOCD, it will read out
 302          * the type of CPU, etc. and init Embedded ICE registers in host
 303          * memory.
 304          *
 305          * It will also set up ICE registers in the target.
 306          *
 307          * However, if we assert TRST later, we need to set up the registers again.
 308          *
 309          * For the "reset halt/init" case we must only set up the registers here.
 310          */
 311         if ((retval = target_examine(cmd_ctx)) != ERROR_OK)
 312                 return retval;
 313
 314         /* prepare reset_halt where necessary */
 315         target = targets;
 316         while (target)
 317         {
 318                 if (jtag_reset_config & RESET_SRST_PULLS_TRST)
 319                 {
 320                         switch (target->reset_mode)
 321                         {
 322                                 case RESET_HALT:
 323                                         command_print(cmd_ctx, "nSRST pulls nTRST, falling back to \"reset run_and_halt\"");
 324                                         target->reset_mode = RESET_RUN_AND_HALT;
 325                                         break;
 326                                 case RESET_INIT:
 327                                         command_print(cmd_ctx, "nSRST pulls nTRST, falling back to \"reset run_and_init\"");
 328                                         target->reset_mode = RESET_RUN_AND_INIT;
 329                                         break;
 330                                 default:
 331                                         break;
 332                         }
 333                 }
 334                 target = target->next;
 335         }
 336
 337         target = targets;
 338         while (target)
 339         {
 340                 /* we have no idea what state the target is in, so we
 341                  * have to drop working areas
 342                  */
 343                 target_free_all_working_areas_restore(target, 0);
 344                 target->type->assert_reset(target);
 345                 target = target->next;
 346         }
 347         if ((retval = jtag_execute_queue()) != ERROR_OK)
 348         {
 349                 LOG_WARNING("JTAG communication failed asserting reset.");
 350                 retval = ERROR_OK;
 351         }
 352
 353         /* request target halt if necessary, and schedule further action */
 354         target = targets;
 355         while (target)
 356         {
 357                 switch (target->reset_mode)
 358                 {
 359                         case RESET_RUN:
 360                                 /* nothing to do if target just wants to be run */
 361                                 break;
 362                         case RESET_RUN_AND_HALT:
 363                                 /* schedule halt */
 364                                 target_register_timer_callback(target_run_and_halt_handler, target->run_and_halt_time, 0, target);
 365                                 break;
 366                         case RESET_RUN_AND_INIT:
 367                                 /* schedule halt */
 368                                 target_register_timer_callback(target_run_and_halt_handler, target->run_and_halt_time, 0, target);
 369                                 target_register_event_callback(target_init_handler, cmd_ctx);
 370                                 break;
 371                         case RESET_HALT:
 372                                 target_halt(target);
 373                                 break;
 374                         case RESET_INIT:
 375                                 target_halt(target);
 376                                 target_register_event_callback(target_init_handler, cmd_ctx);
 377                                 break;
 378                         default:
 379                                 LOG_ERROR("BUG: unknown target->reset_mode");
 380                 }
 381                 target = target->next;
 382         }
 383
 384         if ((retval = jtag_execute_queue()) != ERROR_OK)
 385         {
 386                 LOG_WARNING("JTAG communication failed while reset was asserted. Consider using srst_only for reset_config.");
 387                 retval = ERROR_OK;
 388         }
 389
 390         target = targets;
 391         while (target)
 392         {
 393                 target->type->deassert_reset(target);
 394                 target = target->next;
 395         }
 396
 397         if (jtag_reset_config & RESET_SRST_PULLS_TRST)
 398         {
 399                 /* If TRST was asserted we need to set up registers again */
 400                 if ((retval = target_examine(cmd_ctx)) != ERROR_OK)
 401                         return retval;
 402         }
 403
 404         if ((retval = jtag_execute_queue()) != ERROR_OK)
 405         {
 406                 LOG_WARNING("JTAG communication failed while deasserting reset.");
 407                 retval = ERROR_OK;
 408         }
 409
 410         LOG_DEBUG("Waiting for halted stated as approperiate");
 411
 412         /* Wait for reset to complete, maximum 5 seconds. */
 413         gettimeofday(&timeout, NULL);
 414         timeval_add_time(&timeout, 5, 0);
 415         for(;;)
 416         {
 417                 gettimeofday(&now, NULL);
 418
 419                 target_call_timer_callbacks_now();
 420
 421                 target = targets;
 422                 while (target)
 423                 {
 424                         LOG_DEBUG("Polling target");
 425                         target_poll(target);
 426                         if ((target->reset_mode == RESET_RUN_AND_INIT) ||
 427                                         (target->reset_mode == RESET_RUN_AND_HALT) ||
 428                                         (target->reset_mode == RESET_HALT) ||
 429                                         (target->reset_mode == RESET_INIT))
 430                         {
 431                                 if (target->state != TARGET_HALTED)
 432                                 {
 433                                         if ((now.tv_sec > timeout.tv_sec) || ((now.tv_sec == timeout.tv_sec) && (now.tv_usec >= timeout.tv_usec)))
 434                                         {
 435                                                 LOG_USER("Timed out waiting for halt after reset");
 436                                                 goto done;
 437                                         }
 438                                         /* this will send alive messages on e.g. GDB remote protocol. */
 439                                         usleep(500*1000);
 440                                         LOG_USER_N("%s", ""); /* avoid warning about zero length formatting message*/
 441                                         goto again;
 442                                 }
 443                         }
 444                         target = target->next;
 445                 }
 446                 /* All targets we're waiting for are halted */
 447                 break;
 448
 449                 again:;
 450         }
 451         done:
 452
 453
 454         /* We want any events to be processed before the prompt */
 455         target_call_timer_callbacks_now();
 456
 457         /* if we timed out we need to unregister these handlers */
 458         target = targets;
 459         while (target)
 460         {
 461                 target_unregister_timer_callback(target_run_and_halt_handler, target);
 462                 target = target->next;
 463         }
 464         target_unregister_event_callback(target_init_handler, cmd_ctx);
 465
 466
 467         jtag->speed(jtag_speed_post_reset);
 468
 469         return retval;
 470 }
 471
 472 static int default_virt2phys(struct target_s *target, u32 virtual, u32 *physical)
 473 {
 474         *physical = virtual;
 475         return ERROR_OK;
 476 }
 477
 478 static int default_mmu(struct target_s *target, int *enabled)
 479 {
 480         *enabled = 0;
 481         return ERROR_OK;
 482 }
 483
 484 static int default_examine(struct command_context_s *cmd_ctx, struct target_s *target)
 485 {
 486         target->type->examined = 1;
 487         return ERROR_OK;
 488 }
 489
 490
 491 /* Targets that correctly implement init+examine, i.e.
 492  * no communication with target during init:
 493  *
 494  * XScale
 495  */
 496 int target_examine(struct command_context_s *cmd_ctx)
 497 {
 498         int retval = ERROR_OK;
 499         target_t *target = targets;
 500         while (target)
 501         {
 502                 if ((retval = target->type->examine(cmd_ctx, target))!=ERROR_OK)
 503                         return retval;
 504                 target = target->next;
 505         }
 506         return retval;
 507 }
 508
 509 static int target_write_memory_imp(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer)
 510 {
 511         if (!target->type->examined)
 512         {
 513                 LOG_ERROR("Target not examined yet");
 514                 return ERROR_FAIL;
 515         }
 516         return target->type->write_memory_imp(target, address, size, count, buffer);
 517 }
 518
 519 static int target_read_memory_imp(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer)
 520 {
 521         if (!target->type->examined)
 522         {
 523                 LOG_ERROR("Target not examined yet");
 524                 return ERROR_FAIL;
 525         }
 526         return target->type->read_memory_imp(target, address, size, count, buffer);
 527 }
 528
 529 static int target_soft_reset_halt_imp(struct target_s *target)
 530 {
 531         if (!target->type->examined)
 532         {
 533                 LOG_ERROR("Target not examined yet");
 534                 return ERROR_FAIL;
 535         }
 536         return target->type->soft_reset_halt_imp(target);
 537 }
 538
 539 static int target_run_algorithm_imp(struct target_s *target, int num_mem_params, mem_param_t *mem_params, int num_reg_params, reg_param_t *reg_param, u32 entry_point, u32 exit_point, int timeout_ms, void *arch_info)
 540 {
 541         if (!target->type->examined)
 542         {
 543                 LOG_ERROR("Target not examined yet");
 544                 return ERROR_FAIL;
 545         }
 546         return target->type->run_algorithm_imp(target, num_mem_params, mem_params, num_reg_params, reg_param, entry_point, exit_point, timeout_ms, arch_info);
 547 }
 548
 549 int target_init(struct command_context_s *cmd_ctx)
 550 {
 551         target_t *target = targets;
 552
 553         while (target)
 554         {
 555                 target->type->examined = 0;
 556                 if (target->type->examine == NULL)
 557                 {
 558                         target->type->examine = default_examine;
 559                 }
 560
 561                 if (target->type->init_target(cmd_ctx, target) != ERROR_OK)
 562                 {
 563                         LOG_ERROR("target '%s' init failed", target->type->name);
 564                         exit(-1);
 565                 }
 566
 567                 /* Set up default functions if none are provided by target */
 568                 if (target->type->virt2phys == NULL)
 569                 {
 570                         target->type->virt2phys = default_virt2phys;
 571                 }
 572                 target->type->virt2phys = default_virt2phys;
 573                 /* a non-invasive way(in terms of patches) to add some code that
 574                  * runs before the type->write/read_memory implementation
 575                  */
 576                 target->type->write_memory_imp = target->type->write_memory;
 577                 target->type->write_memory = target_write_memory_imp;
 578                 target->type->read_memory_imp = target->type->read_memory;
 579                 target->type->read_memory = target_read_memory_imp;
 580                 target->type->soft_reset_halt_imp = target->type->soft_reset_halt;
 581                 target->type->soft_reset_halt = target_soft_reset_halt_imp;
 582                 target->type->run_algorithm_imp = target->type->run_algorithm;
 583                 target->type->run_algorithm = target_run_algorithm_imp;
 584
 585
 586                 if (target->type->mmu == NULL)
 587                 {
 588                         target->type->mmu = default_mmu;
 589                 }
 590                 target = target->next;
 591         }
 592
 593         if (targets)
 594         {
 595                 target_register_user_commands(cmd_ctx);
 596                 target_register_timer_callback(handle_target, 100, 1, NULL);
 597         }
 598
 599         return ERROR_OK;
 600 }
 601
 602 int target_register_event_callback(int (*callback)(struct target_s *target, enum target_event event, void *priv), void *priv)
 603 {
 604         target_event_callback_t **callbacks_p = &target_event_callbacks;
 605
 606         if (callback == NULL)
 607         {
 608                 return ERROR_INVALID_ARGUMENTS;
 609         }
 610
 611         if (*callbacks_p)
 612         {
 613                 while ((*callbacks_p)->next)
 614                         callbacks_p = &((*callbacks_p)->next);
 615                 callbacks_p = &((*callbacks_p)->next);
 616         }
 617
 618         (*callbacks_p) = malloc(sizeof(target_event_callback_t));
 619         (*callbacks_p)->callback = callback;
 620         (*callbacks_p)->priv = priv;
 621         (*callbacks_p)->next = NULL;
 622
 623         return ERROR_OK;
 624 }
 625
 626 int target_register_timer_callback(int (*callback)(void *priv), int time_ms, int periodic, void *priv)
 627 {
 628         target_timer_callback_t **callbacks_p = &target_timer_callbacks;
 629         struct timeval now;
 630
 631         if (callback == NULL)
 632         {
 633                 return ERROR_INVALID_ARGUMENTS;
 634         }
 635
 636         if (*callbacks_p)
 637         {
 638                 while ((*callbacks_p)->next)
 639                         callbacks_p = &((*callbacks_p)->next);
 640                 callbacks_p = &((*callbacks_p)->next);
 641         }
 642
 643         (*callbacks_p) = malloc(sizeof(target_timer_callback_t));
 644         (*callbacks_p)->callback = callback;
 645         (*callbacks_p)->periodic = periodic;
 646         (*callbacks_p)->time_ms = time_ms;
 647
 648         gettimeofday(&now, NULL);
 649         (*callbacks_p)->when.tv_usec = now.tv_usec + (time_ms % 1000) * 1000;
 650         time_ms -= (time_ms % 1000);
 651         (*callbacks_p)->when.tv_sec = now.tv_sec + (time_ms / 1000);
 652         if ((*callbacks_p)->when.tv_usec > 1000000)
 653         {
 654                 (*callbacks_p)->when.tv_usec = (*callbacks_p)->when.tv_usec - 1000000;
 655                 (*callbacks_p)->when.tv_sec += 1;
 656         }
 657
 658         (*callbacks_p)->priv = priv;
 659         (*callbacks_p)->next = NULL;
 660
 661         return ERROR_OK;
 662 }
 663
 664 int target_unregister_event_callback(int (*callback)(struct target_s *target, enum target_event event, void *priv), void *priv)
 665 {
 666         target_event_callback_t **p = &target_event_callbacks;
 667         target_event_callback_t *c = target_event_callbacks;
 668
 669         if (callback == NULL)
 670         {
 671                 return ERROR_INVALID_ARGUMENTS;
 672         }
 673
 674         while (c)
 675         {
 676                 target_event_callback_t *next = c->next;
 677                 if ((c->callback == callback) && (c->priv == priv))
 678                 {
 679                         *p = next;
 680                         free(c);
 681                         return ERROR_OK;
 682                 }
 683                 else
 684                         p = &(c->next);
 685                 c = next;
 686         }
 687
 688         return ERROR_OK;
 689 }
 690
 691 int target_unregister_timer_callback(int (*callback)(void *priv), void *priv)
 692 {
 693         target_timer_callback_t **p = &target_timer_callbacks;
 694         target_timer_callback_t *c = target_timer_callbacks;
 695
 696         if (callback == NULL)
 697         {
 698                 return ERROR_INVALID_ARGUMENTS;
 699         }
 700
 701         while (c)
 702         {
 703                 target_timer_callback_t *next = c->next;
 704                 if ((c->callback == callback) && (c->priv == priv))
 705                 {
 706                         *p = next;
 707                         free(c);
 708                         return ERROR_OK;
 709                 }
 710                 else
 711                         p = &(c->next);
 712                 c = next;
 713         }
 714
 715         return ERROR_OK;
 716 }
 717
 718 int target_call_event_callbacks(target_t *target, enum target_event event)
 719 {
 720         target_event_callback_t *callback = target_event_callbacks;
 721         target_event_callback_t *next_callback;
 722
 723         LOG_DEBUG("target event %i", event);
 724
 725         while (callback)
 726         {
 727                 next_callback = callback->next;
 728                 callback->callback(target, event, callback->priv);
 729                 callback = next_callback;
 730         }
 731
 732         return ERROR_OK;
 733 }
 734
 735 static int target_call_timer_callbacks_check_time(int checktime)
 736 {
 737         target_timer_callback_t *callback = target_timer_callbacks;
 738         target_timer_callback_t *next_callback;
 739         struct timeval now;
 740
 741         gettimeofday(&now, NULL);
 742
 743         while (callback)
 744         {
 745                 next_callback = callback->next;
 746
 747                 if ((!checktime&&callback->periodic)||
 748                                 (((now.tv_sec >= callback->when.tv_sec) && (now.tv_usec >= callback->when.tv_usec))
 749                                                 || (now.tv_sec > callback->when.tv_sec)))
 750                 {
 751                         callback->callback(callback->priv);
 752                         if (callback->periodic)
 753                         {
 754                                 int time_ms = callback->time_ms;
 755                                 callback->when.tv_usec = now.tv_usec + (time_ms % 1000) * 1000;
 756                                 time_ms -= (time_ms % 1000);
 757                                 callback->when.tv_sec = now.tv_sec + time_ms / 1000;
 758                                 if (callback->when.tv_usec > 1000000)
 759                                 {
 760                                         callback->when.tv_usec = callback->when.tv_usec - 1000000;
 761                                         callback->when.tv_sec += 1;
 762                                 }
 763                         }
 764                         else
 765                                 target_unregister_timer_callback(callback->callback, callback->priv);
 766                 }
 767
 768                 callback = next_callback;
 769         }
 770
 771         return ERROR_OK;
 772 }
 773
 774 int target_call_timer_callbacks()
 775 {
 776         return target_call_timer_callbacks_check_time(1);
 777 }
 778
 779 /* invoke periodic callbacks immediately */
 780 int target_call_timer_callbacks_now()
 781 {
 782         return target_call_timer_callbacks(0);
 783 }
 784
 785
 786 int target_alloc_working_area(struct target_s *target, u32 size, working_area_t **area)
 787 {
 788         working_area_t *c = target->working_areas;
 789         working_area_t *new_wa = NULL;
 790
 791         /* Reevaluate working area address based on MMU state*/
 792         if (target->working_areas == NULL)
 793         {
 794                 int retval;
 795                 int enabled;
 796                 retval = target->type->mmu(target, &enabled);
 797                 if (retval != ERROR_OK)
 798                 {
 799                         return retval;
 800                 }
 801                 if (enabled)
 802                 {
 803                         target->working_area = target->working_area_virt;
 804                 }
 805                 else
 806                 {
 807                         target->working_area = target->working_area_phys;
 808                 }
 809         }
 810
 811         /* only allocate multiples of 4 byte */
 812         if (size % 4)
 813         {
 814                 LOG_ERROR("BUG: code tried to allocate unaligned number of bytes, padding");
 815                 size = CEIL(size, 4);
 816         }
 817
 818         /* see if there's already a matching working area */
 819         while (c)
 820         {
 821                 if ((c->free) && (c->size == size))
 822                 {
 823                         new_wa = c;
 824                         break;
 825                 }
 826                 c = c->next;
 827         }
 828
 829         /* if not, allocate a new one */
 830         if (!new_wa)
 831         {
 832                 working_area_t **p = &target->working_areas;
 833                 u32 first_free = target->working_area;
 834                 u32 free_size = target->working_area_size;
 835
 836                 LOG_DEBUG("allocating new working area");
 837
 838                 c = target->working_areas;
 839                 while (c)
 840                 {
 841                         first_free += c->size;
 842                         free_size -= c->size;
 843                         p = &c->next;
 844                         c = c->next;
 845                 }
 846
 847                 if (free_size < size)
 848                 {
 849                         LOG_WARNING("not enough working area available(requested %d, free %d)", size, free_size);
 850                         return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
 851                 }
 852
 853                 new_wa = malloc(sizeof(working_area_t));
 854                 new_wa->next = NULL;
 855                 new_wa->size = size;
 856                 new_wa->address = first_free;
 857
 858                 if (target->backup_working_area)
 859                 {
 860                         new_wa->backup = malloc(new_wa->size);
 861                         target->type->read_memory(target, new_wa->address, 4, new_wa->size / 4, new_wa->backup);
 862                 }
 863                 else
 864                 {
 865                         new_wa->backup = NULL;
 866                 }
 867
 868                 /* put new entry in list */
 869                 *p = new_wa;
 870         }
 871
 872         /* mark as used, and return the new (reused) area */
 873         new_wa->free = 0;
 874         *area = new_wa;
 875
 876         /* user pointer */
 877         new_wa->user = area;
 878
 879         return ERROR_OK;
 880 }
 881
 882 int target_free_working_area_restore(struct target_s *target, working_area_t *area, int restore)
 883 {
 884         if (area->free)
 885                 return ERROR_OK;
 886
 887         if (restore&&target->backup_working_area)
 888                 target->type->write_memory(target, area->address, 4, area->size / 4, area->backup);
 889
 890         area->free = 1;
 891
 892         /* mark user pointer invalid */
 893         *area->user = NULL;
 894         area->user = NULL;
 895
 896         return ERROR_OK;
 897 }
 898
 899 int target_free_working_area(struct target_s *target, working_area_t *area)
 900 {
 901         return target_free_working_area_restore(target, area, 1);
 902 }
 903
 904 int target_free_all_working_areas_restore(struct target_s *target, int restore)
 905 {
 906         working_area_t *c = target->working_areas;
 907
 908         while (c)
 909         {
 910                 working_area_t *next = c->next;
 911                 target_free_working_area_restore(target, c, restore);
 912
 913                 if (c->backup)
 914                         free(c->backup);
 915
 916                 free(c);
 917
 918                 c = next;
 919         }
 920
 921         target->working_areas = NULL;
 922
 923         return ERROR_OK;
 924 }
 925
 926 int target_free_all_working_areas(struct target_s *target)
 927 {
 928         return target_free_all_working_areas_restore(target, 1);
 929 }
 930
 931 int target_register_commands(struct command_context_s *cmd_ctx)
 932 {
 933         register_command(cmd_ctx, NULL, "target", handle_target_command, COMMAND_CONFIG, "target <cpu> [reset_init default - DEPRECATED] <chainpos> <endianness> <variant> [cpu type specifc args]");
 934         register_command(cmd_ctx, NULL, "targets", handle_targets_command, COMMAND_EXEC, NULL);
 935         register_command(cmd_ctx, NULL, "target_script", handle_target_script_command, COMMAND_CONFIG, NULL);
 936         register_command(cmd_ctx, NULL, "run_and_halt_time", handle_run_and_halt_time_command, COMMAND_CONFIG, "<target> <run time ms>");
 937         register_command(cmd_ctx, NULL, "working_area", handle_working_area_command, COMMAND_ANY, "working_area <target#> <address> <size> <'backup'|'nobackup'> [virtual address]");
 938         register_command(cmd_ctx, NULL, "virt2phys", handle_virt2phys_command, COMMAND_ANY, "virt2phys <virtual address>");
 939         register_command(cmd_ctx, NULL, "profile", handle_profile_command, COMMAND_EXEC, "PRELIMINARY! - profile <seconds> <gmon.out>");
 940
 941         return ERROR_OK;
 942 }
 943
 944 int target_arch_state(struct target_s *target)
 945 {
 946         int retval;
 947         if (target==NULL)
 948         {
 949                 LOG_USER("No target has been configured");
 950                 return ERROR_OK;
 951         }
 952
 953         LOG_USER("target state: %s", target_state_strings[target->state]);
 954
 955         if (target->state!=TARGET_HALTED)
 956                 return ERROR_OK;
 957
 958         retval=target->type->arch_state(target);
 959         return retval;
 960 }
 961
 962 /* Single aligned words are guaranteed to use 16 or 32 bit access
 963  * mode respectively, otherwise data is handled as quickly as
 964  * possible
 965  */
 966 int target_write_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer)
 967 {
 968         int retval;
 969         if (!target->type->examined)
 970         {
 971                 LOG_ERROR("Target not examined yet");
 972                 return ERROR_FAIL;
 973         }
 974
 975         LOG_DEBUG("writing buffer of %i byte at 0x%8.8x", size, address);
 976
 977         if (((address % 2) == 0) && (size == 2))
 978         {
 979                 return target->type->write_memory(target, address, 2, 1, buffer);
 980         }
 981
 982         /* handle unaligned head bytes */
 983         if (address % 4)
 984         {
 985                 int unaligned = 4 - (address % 4);
 986
 987                 if (unaligned > size)
 988                         unaligned = size;
 989
 990                 if ((retval = target->type->write_memory(target, address, 1, unaligned, buffer)) != ERROR_OK)
 991                         return retval;
 992
 993                 buffer += unaligned;
 994                 address += unaligned;
 995                 size -= unaligned;
 996         }
 997
 998         /* handle aligned words */
 999         if (size >= 4)
1000         {
1001                 int aligned = size - (size % 4);
1002
1003                 /* use bulk writes above a certain limit. This may have to be changed */
1004                 if (aligned > 128)
1005                 {
1006                         if ((retval = target->type->bulk_write_memory(target, address, aligned / 4, buffer)) != ERROR_OK)
1007                                 return retval;
1008                 }
1009                 else
1010                 {
1011                         if ((retval = target->type->write_memory(target, address, 4, aligned / 4, buffer)) != ERROR_OK)
1012                                 return retval;
1013                 }
1014
1015                 buffer += aligned;
1016                 address += aligned;
1017                 size -= aligned;
1018         }
1019
1020         /* handle tail writes of less than 4 bytes */
1021         if (size > 0)
1022         {
1023                 if ((retval = target->type->write_memory(target, address, 1, size, buffer)) != ERROR_OK)
1024                         return retval;
1025         }
1026
1027         return ERROR_OK;
1028 }
1029
1030
1031 /* Single aligned words are guaranteed to use 16 or 32 bit access
1032  * mode respectively, otherwise data is handled as quickly as
1033  * possible
1034  */
1035 int target_read_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer)
1036 {
1037         int retval;
1038         if (!target->type->examined)
1039         {
1040                 LOG_ERROR("Target not examined yet");
1041                 return ERROR_FAIL;
1042         }
1043
1044         LOG_DEBUG("reading buffer of %i byte at 0x%8.8x", size, address);
1045
1046         if (((address % 2) == 0) && (size == 2))
1047         {
1048                 return target->type->read_memory(target, address, 2, 1, buffer);
1049         }
1050
1051         /* handle unaligned head bytes */
1052         if (address % 4)
1053         {
1054                 int unaligned = 4 - (address % 4);
1055
1056                 if (unaligned > size)
1057                         unaligned = size;
1058
1059                 if ((retval = target->type->read_memory(target, address, 1, unaligned, buffer)) != ERROR_OK)
1060                         return retval;
1061
1062                 buffer += unaligned;
1063                 address += unaligned;
1064                 size -= unaligned;
1065         }
1066
1067         /* handle aligned words */
1068         if (size >= 4)
1069         {
1070                 int aligned = size - (size % 4);
1071
1072                 if ((retval = target->type->read_memory(target, address, 4, aligned / 4, buffer)) != ERROR_OK)
1073                         return retval;
1074
1075                 buffer += aligned;
1076                 address += aligned;
1077                 size -= aligned;
1078         }
1079
1080         /* handle tail writes of less than 4 bytes */
1081         if (size > 0)
1082         {
1083                 if ((retval = target->type->read_memory(target, address, 1, size, buffer)) != ERROR_OK)
1084                         return retval;
1085         }
1086
1087         return ERROR_OK;
1088 }
1089
1090 int target_checksum_memory(struct target_s *target, u32 address, u32 size, u32* crc)
1091 {
1092         u8 *buffer;
1093         int retval;
1094         int i;
1095         u32 checksum = 0;
1096         if (!target->type->examined)
1097         {
1098                 LOG_ERROR("Target not examined yet");
1099                 return ERROR_FAIL;
1100         }
1101
1102         if ((retval = target->type->checksum_memory(target, address,
1103                 size, &checksum)) == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
1104         {
1105                 buffer = malloc(size);
1106                 if (buffer == NULL)
1107                 {
1108                         LOG_ERROR("error allocating buffer for section (%d bytes)", size);
1109                         return ERROR_INVALID_ARGUMENTS;
1110                 }
1111                 retval = target_read_buffer(target, address, size, buffer);
1112                 if (retval != ERROR_OK)
1113                 {
1114                         free(buffer);
1115                         return retval;
1116                 }
1117
1118                 /* convert to target endianess */
1119                 for (i = 0; i < (size/sizeof(u32)); i++)
1120                 {
1121                         u32 target_data;
1122                         target_data = target_buffer_get_u32(target, &buffer[i*sizeof(u32)]);
1123                         target_buffer_set_u32(target, &buffer[i*sizeof(u32)], target_data);
1124                 }
1125
1126                 retval = image_calculate_checksum( buffer, size, &checksum );
1127                 free(buffer);
1128         }
1129
1130         *crc = checksum;
1131
1132         return retval;
1133 }
1134
1135 int target_read_u32(struct target_s *target, u32 address, u32 *value)
1136 {
1137         u8 value_buf[4];
1138         if (!target->type->examined)
1139         {
1140                 LOG_ERROR("Target not examined yet");
1141                 return ERROR_FAIL;
1142         }
1143
1144         int retval = target->type->read_memory(target, address, 4, 1, value_buf);
1145
1146         if (retval == ERROR_OK)
1147         {
1148                 *value = target_buffer_get_u32(target, value_buf);
1149                 LOG_DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, *value);
1150         }
1151         else
1152         {
1153                 *value = 0x0;
1154                 LOG_DEBUG("address: 0x%8.8x failed", address);
1155         }
1156
1157         return retval;
1158 }
1159
1160 int target_read_u16(struct target_s *target, u32 address, u16 *value)
1161 {
1162         u8 value_buf[2];
1163         if (!target->type->examined)
1164         {
1165                 LOG_ERROR("Target not examined yet");
1166                 return ERROR_FAIL;
1167         }
1168
1169         int retval = target->type->read_memory(target, address, 2, 1, value_buf);
1170
1171         if (retval == ERROR_OK)
1172         {
1173                 *value = target_buffer_get_u16(target, value_buf);
1174                 LOG_DEBUG("address: 0x%8.8x, value: 0x%4.4x", address, *value);
1175         }
1176         else
1177         {
1178                 *value = 0x0;
1179                 LOG_DEBUG("address: 0x%8.8x failed", address);
1180         }
1181
1182         return retval;
1183 }
1184
1185 int target_read_u8(struct target_s *target, u32 address, u8 *value)
1186 {
1187         int retval = target->type->read_memory(target, address, 1, 1, value);
1188         if (!target->type->examined)
1189         {
1190                 LOG_ERROR("Target not examined yet");
1191                 return ERROR_FAIL;
1192         }
1193
1194         if (retval == ERROR_OK)
1195         {
1196                 LOG_DEBUG("address: 0x%8.8x, value: 0x%2.2x", address, *value);
1197         }
1198         else
1199         {
1200                 *value = 0x0;
1201                 LOG_DEBUG("address: 0x%8.8x failed", address);
1202         }
1203
1204         return retval;
1205 }
1206
1207 int target_write_u32(struct target_s *target, u32 address, u32 value)
1208 {
1209         int retval;
1210         u8 value_buf[4];
1211         if (!target->type->examined)
1212         {
1213                 LOG_ERROR("Target not examined yet");
1214                 return ERROR_FAIL;
1215         }
1216
1217         LOG_DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, value);
1218
1219         target_buffer_set_u32(target, value_buf, value);
1220         if ((retval = target->type->write_memory(target, address, 4, 1, value_buf)) != ERROR_OK)
1221         {
1222                 LOG_DEBUG("failed: %i", retval);
1223         }
1224
1225         return retval;
1226 }
1227
1228 int target_write_u16(struct target_s *target, u32 address, u16 value)
1229 {
1230         int retval;
1231         u8 value_buf[2];
1232         if (!target->type->examined)
1233         {
1234                 LOG_ERROR("Target not examined yet");
1235                 return ERROR_FAIL;
1236         }
1237
1238         LOG_DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, value);
1239
1240         target_buffer_set_u16(target, value_buf, value);
1241         if ((retval = target->type->write_memory(target, address, 2, 1, value_buf)) != ERROR_OK)
1242         {
1243                 LOG_DEBUG("failed: %i", retval);
1244         }
1245
1246         return retval;
1247 }
1248
1249 int target_write_u8(struct target_s *target, u32 address, u8 value)
1250 {
1251         int retval;
1252         if (!target->type->examined)
1253         {
1254                 LOG_ERROR("Target not examined yet");
1255                 return ERROR_FAIL;
1256         }
1257
1258         LOG_DEBUG("address: 0x%8.8x, value: 0x%2.2x", address, value);
1259
1260         if ((retval = target->type->read_memory(target, address, 1, 1, &value)) != ERROR_OK)
1261         {
1262                 LOG_DEBUG("failed: %i", retval);
1263         }
1264
1265         return retval;
1266 }
1267
1268 int target_register_user_commands(struct command_context_s *cmd_ctx)
1269 {
1270         register_command(cmd_ctx,  NULL, "reg", handle_reg_command, COMMAND_EXEC, NULL);
1271         register_command(cmd_ctx,  NULL, "poll", handle_poll_command, COMMAND_EXEC, "poll target state");
1272         register_command(cmd_ctx,  NULL, "wait_halt", handle_wait_halt_command, COMMAND_EXEC, "wait for target halt [time (s)]");
1273         register_command(cmd_ctx,  NULL, "halt", handle_halt_command, COMMAND_EXEC, "halt target");
1274         register_command(cmd_ctx,  NULL, "resume", handle_resume_command, COMMAND_EXEC, "resume target [addr]");
1275         register_command(cmd_ctx,  NULL, "step", handle_step_command, COMMAND_EXEC, "step one instruction from current PC or [addr]");
1276         register_command(cmd_ctx,  NULL, "reset", handle_reset_command, COMMAND_EXEC, "reset target [run|halt|init|run_and_halt|run_and_init]");
1277         register_command(cmd_ctx,  NULL, "soft_reset_halt", handle_soft_reset_halt_command, COMMAND_EXEC, "halt the target and do a soft reset");
1278
1279         register_command(cmd_ctx,  NULL, "mdw", handle_md_command, COMMAND_EXEC, "display memory words <addr> [count]");
1280         register_command(cmd_ctx,  NULL, "mdh", handle_md_command, COMMAND_EXEC, "display memory half-words <addr> [count]");
1281         register_command(cmd_ctx,  NULL, "mdb", handle_md_command, COMMAND_EXEC, "display memory bytes <addr> [count]");
1282
1283         register_command(cmd_ctx,  NULL, "mww", handle_mw_command, COMMAND_EXEC, "write memory word <addr> <value> [count]");
1284         register_command(cmd_ctx,  NULL, "mwh", handle_mw_command, COMMAND_EXEC, "write memory half-word <addr> <value> [count]");
1285         register_command(cmd_ctx,  NULL, "mwb", handle_mw_command, COMMAND_EXEC, "write memory byte <addr> <value> [count]");
1286
1287         register_command(cmd_ctx,  NULL, "bp", handle_bp_command, COMMAND_EXEC, "set breakpoint <address> <length> [hw]");
1288         register_command(cmd_ctx,  NULL, "rbp", handle_rbp_command, COMMAND_EXEC, "remove breakpoint <adress>");
1289         register_command(cmd_ctx,  NULL, "wp", handle_wp_command, COMMAND_EXEC, "set watchpoint <address> <length> <r/w/a> [value] [mask]");
1290         register_command(cmd_ctx,  NULL, "rwp", handle_rwp_command, COMMAND_EXEC, "remove watchpoint <adress>");
1291
1292         register_command(cmd_ctx,  NULL, "load_image", handle_load_image_command, COMMAND_EXEC, "load_image <file> <address> ['bin'|'ihex'|'elf'|'s19']");
1293         register_command(cmd_ctx,  NULL, "dump_image", handle_dump_image_command, COMMAND_EXEC, "dump_image <file> <address> <size>");
1294         register_command(cmd_ctx,  NULL, "verify_image", handle_verify_image_command, COMMAND_EXEC, "verify_image <file> [offset] [type]");
1295         register_command(cmd_ctx,  NULL, "load_binary", handle_load_image_command, COMMAND_EXEC, "[DEPRECATED] load_binary <file> <address>");
1296         register_command(cmd_ctx,  NULL, "dump_binary", handle_dump_image_command, COMMAND_EXEC, "[DEPRECATED] dump_binary <file> <address> <size>");
1297
1298         target_request_register_commands(cmd_ctx);
1299         trace_register_commands(cmd_ctx);
1300
1301         return ERROR_OK;
1302 }
1303
1304 int handle_targets_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1305 {
1306         target_t *target = targets;
1307         int count = 0;
1308
1309         if (argc == 1)
1310         {
1311                 int num = strtoul(args[0], NULL, 0);
1312
1313                 while (target)
1314                 {
1315                         count++;
1316                         target = target->next;
1317                 }
1318
1319                 if (num < count)
1320                         cmd_ctx->current_target = num;
1321                 else
1322                         command_print(cmd_ctx, "%i is out of bounds, only %i targets are configured", num, count);
1323
1324                 return ERROR_OK;
1325         }
1326
1327         while (target)
1328         {
1329                 command_print(cmd_ctx, "%i: %s (%s), state: %s", count++, target->type->name, target_endianess_strings[target->endianness], target_state_strings[target->state]);
1330                 target = target->next;
1331         }
1332
1333         return ERROR_OK;
1334 }
1335
1336 int handle_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1337 {
1338         int i;
1339         int found = 0;
1340
1341         if (argc < 3)
1342         {
1343                 return ERROR_COMMAND_SYNTAX_ERROR;
1344         }
1345
1346         /* search for the specified target */
1347         if (args[0] && (args[0][0] != 0))
1348         {
1349                 for (i = 0; target_types[i]; i++)
1350                 {
1351                         if (strcmp(args[0], target_types[i]->name) == 0)
1352                         {
1353                                 target_t **last_target_p = &targets;
1354
1355                                 /* register target specific commands */
1356                                 if (target_types[i]->register_commands(cmd_ctx) != ERROR_OK)
1357                                 {
1358                                         LOG_ERROR("couldn't register '%s' commands", args[0]);
1359                                         exit(-1);
1360                                 }
1361
1362                                 if (*last_target_p)
1363                                 {
1364                                         while ((*last_target_p)->next)
1365                                                 last_target_p = &((*last_target_p)->next);
1366                                         last_target_p = &((*last_target_p)->next);
1367                                 }
1368
1369                                 *last_target_p = malloc(sizeof(target_t));
1370
1371                                 (*last_target_p)->type = target_types[i];
1372
1373                                 if (strcmp(args[1], "big") == 0)
1374                                         (*last_target_p)->endianness = TARGET_BIG_ENDIAN;
1375                                 else if (strcmp(args[1], "little") == 0)
1376                                         (*last_target_p)->endianness = TARGET_LITTLE_ENDIAN;
1377                                 else
1378                                 {
1379                                         LOG_ERROR("endianness must be either 'little' or 'big', not '%s'", args[1]);
1380                                         return ERROR_COMMAND_SYNTAX_ERROR;
1381                                 }
1382
1383                                 /* what to do on a target reset */
1384                                 (*last_target_p)->reset_mode = RESET_INIT; /* default */
1385                                 if (strcmp(args[2], "reset_halt") == 0)
1386                                         (*last_target_p)->reset_mode = RESET_HALT;
1387                                 else if (strcmp(args[2], "reset_run") == 0)
1388                                         (*last_target_p)->reset_mode = RESET_RUN;
1389                                 else if (strcmp(args[2], "reset_init") == 0)
1390                                         (*last_target_p)->reset_mode = RESET_INIT;
1391                                 else if (strcmp(args[2], "run_and_halt") == 0)
1392                                         (*last_target_p)->reset_mode = RESET_RUN_AND_HALT;
1393                                 else if (strcmp(args[2], "run_and_init") == 0)
1394                                         (*last_target_p)->reset_mode = RESET_RUN_AND_INIT;
1395                                 else
1396                                 {
1397                                         /* Kludge! we want to make this reset arg optional while remaining compatible! */
1398                                         args--;
1399                                         argc++;
1400                                 }
1401                                 (*last_target_p)->run_and_halt_time = 1000; /* default 1s */
1402
1403                                 (*last_target_p)->reset_script = NULL;
1404                                 (*last_target_p)->post_halt_script = NULL;
1405                                 (*last_target_p)->pre_resume_script = NULL;
1406                                 (*last_target_p)->gdb_program_script = NULL;
1407
1408                                 (*last_target_p)->working_area = 0x0;
1409                                 (*last_target_p)->working_area_size = 0x0;
1410                                 (*last_target_p)->working_areas = NULL;
1411                                 (*last_target_p)->backup_working_area = 0;
1412
1413                                 (*last_target_p)->state = TARGET_UNKNOWN;
1414                                 (*last_target_p)->debug_reason = DBG_REASON_UNDEFINED;
1415                                 (*last_target_p)->reg_cache = NULL;
1416                                 (*last_target_p)->breakpoints = NULL;
1417                                 (*last_target_p)->watchpoints = NULL;
1418                                 (*last_target_p)->next = NULL;
1419                                 (*last_target_p)->arch_info = NULL;
1420
1421                                 /* initialize trace information */
1422                                 (*last_target_p)->trace_info = malloc(sizeof(trace_t));
1423                                 (*last_target_p)->trace_info->num_trace_points = 0;
1424                                 (*last_target_p)->trace_info->trace_points_size = 0;
1425                                 (*last_target_p)->trace_info->trace_points = NULL;
1426                                 (*last_target_p)->trace_info->trace_history_size = 0;
1427                                 (*last_target_p)->trace_info->trace_history = NULL;
1428                                 (*last_target_p)->trace_info->trace_history_pos = 0;
1429                                 (*last_target_p)->trace_info->trace_history_overflowed = 0;
1430
1431                                 (*last_target_p)->dbgmsg = NULL;
1432                                 (*last_target_p)->dbg_msg_enabled = 0;
1433
1434                                 (*last_target_p)->type->target_command(cmd_ctx, cmd, args, argc, *last_target_p);
1435
1436                                 found = 1;
1437                                 break;
1438                         }
1439                 }
1440         }
1441
1442         /* no matching target found */
1443         if (!found)
1444         {
1445                 LOG_ERROR("target '%s' not found", args[0]);
1446                 return ERROR_COMMAND_SYNTAX_ERROR;
1447         }
1448
1449         return ERROR_OK;
1450 }
1451
1452 /* usage: target_script <target#> <event> <script_file> */
1453 int handle_target_script_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1454 {
1455         target_t *target = NULL;
1456
1457         if (argc < 3)
1458         {
1459                 LOG_ERROR("incomplete target_script command");
1460                 return ERROR_COMMAND_SYNTAX_ERROR;
1461         }
1462
1463         target = get_target_by_num(strtoul(args[0], NULL, 0));
1464
1465         if (!target)
1466         {
1467                 return ERROR_COMMAND_SYNTAX_ERROR;
1468         }
1469
1470         if (strcmp(args[1], "reset") == 0)
1471         {
1472                 if (target->reset_script)
1473                         free(target->reset_script);
1474                 target->reset_script = strdup(args[2]);
1475         }
1476         else if (strcmp(args[1], "post_halt") == 0)
1477         {
1478                 if (target->post_halt_script)
1479                         free(target->post_halt_script);
1480                 target->post_halt_script = strdup(args[2]);
1481         }
1482         else if (strcmp(args[1], "pre_resume") == 0)
1483         {
1484                 if (target->pre_resume_script)
1485                         free(target->pre_resume_script);
1486                 target->pre_resume_script = strdup(args[2]);
1487         }
1488         else if (strcmp(args[1], "gdb_program_config") == 0)
1489         {
1490                 if (target->gdb_program_script)
1491                         free(target->gdb_program_script);
1492                 target->gdb_program_script = strdup(args[2]);
1493         }
1494         else
1495         {
1496                 LOG_ERROR("unknown event type: '%s", args[1]);
1497                 return ERROR_COMMAND_SYNTAX_ERROR;
1498         }
1499
1500         return ERROR_OK;
1501 }
1502
1503 int handle_run_and_halt_time_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1504 {
1505         target_t *target = NULL;
1506
1507         if (argc < 2)
1508         {
1509                 return ERROR_COMMAND_SYNTAX_ERROR;
1510         }
1511
1512         target = get_target_by_num(strtoul(args[0], NULL, 0));
1513         if (!target)
1514         {
1515                 return ERROR_COMMAND_SYNTAX_ERROR;
1516         }
1517
1518         target->run_and_halt_time = strtoul(args[1], NULL, 0);
1519
1520         return ERROR_OK;
1521 }
1522
1523 int handle_working_area_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1524 {
1525         target_t *target = NULL;
1526
1527         if ((argc < 4) || (argc > 5))
1528         {
1529                 return ERROR_COMMAND_SYNTAX_ERROR;
1530         }
1531
1532         target = get_target_by_num(strtoul(args[0], NULL, 0));
1533         if (!target)
1534         {
1535                 return ERROR_COMMAND_SYNTAX_ERROR;
1536         }
1537         target_free_all_working_areas(target);
1538
1539         target->working_area_phys = target->working_area_virt = strtoul(args[1], NULL, 0);
1540         if (argc == 5)
1541         {
1542                 target->working_area_virt = strtoul(args[4], NULL, 0);
1543         }
1544         target->working_area_size = strtoul(args[2], NULL, 0);
1545
1546         if (strcmp(args[3], "backup") == 0)
1547         {
1548                 target->backup_working_area = 1;
1549         }
1550         else if (strcmp(args[3], "nobackup") == 0)
1551         {
1552                 target->backup_working_area = 0;
1553         }
1554         else
1555         {
1556                 LOG_ERROR("unrecognized <backup|nobackup> argument (%s)", args[3]);
1557                 return ERROR_COMMAND_SYNTAX_ERROR;
1558         }
1559
1560         return ERROR_OK;
1561 }
1562
1563
1564 /* process target state changes */
1565 int handle_target(void *priv)
1566 {
1567         target_t *target = targets;
1568
1569         while (target)
1570         {
1571                 if (target_continous_poll)
1572                 {
1573                         /* polling may fail silently until the target has been examined */
1574                         target_poll(target);
1575                 }
1576
1577                 target = target->next;
1578         }
1579
1580         return ERROR_OK;
1581 }
1582
1583 int handle_reg_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1584 {
1585         target_t *target;
1586         reg_t *reg = NULL;
1587         int count = 0;
1588         char *value;
1589
1590         LOG_DEBUG("-");
1591
1592         target = get_current_target(cmd_ctx);
1593
1594         /* list all available registers for the current target */
1595         if (argc == 0)
1596         {
1597                 reg_cache_t *cache = target->reg_cache;
1598
1599                 count = 0;
1600                 while(cache)
1601                 {
1602                         int i;
1603                         for (i = 0; i < cache->num_regs; i++)
1604                         {
1605                                 value = buf_to_str(cache->reg_list[i].value, cache->reg_list[i].size, 16);
1606                                 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);
1607                                 free(value);
1608                         }
1609                         cache = cache->next;
1610                 }
1611
1612                 return ERROR_OK;
1613         }
1614
1615         /* access a single register by its ordinal number */
1616         if ((args[0][0] >= '0') && (args[0][0] <= '9'))
1617         {
1618                 int num = strtoul(args[0], NULL, 0);
1619                 reg_cache_t *cache = target->reg_cache;
1620
1621                 count = 0;
1622                 while(cache)
1623                 {
1624                         int i;
1625                         for (i = 0; i < cache->num_regs; i++)
1626                         {
1627                                 if (count++ == num)
1628                                 {
1629                                         reg = &cache->reg_list[i];
1630                                         break;
1631                                 }
1632                         }
1633                         if (reg)
1634                                 break;
1635                         cache = cache->next;
1636                 }
1637
1638                 if (!reg)
1639                 {
1640                         command_print(cmd_ctx, "%i is out of bounds, the current target has only %i registers (0 - %i)", num, count, count - 1);
1641                         return ERROR_OK;
1642                 }
1643         } else /* access a single register by its name */
1644         {
1645                 reg = register_get_by_name(target->reg_cache, args[0], 1);
1646
1647                 if (!reg)
1648                 {
1649                         command_print(cmd_ctx, "register %s not found in current target", args[0]);
1650                         return ERROR_OK;
1651                 }
1652         }
1653
1654         /* display a register */
1655         if ((argc == 1) || ((argc == 2) && !((args[1][0] >= '0') && (args[1][0] <= '9'))))
1656         {
1657                 if ((argc == 2) && (strcmp(args[1], "force") == 0))
1658                         reg->valid = 0;
1659
1660                 if (reg->valid == 0)
1661                 {
1662                         reg_arch_type_t *arch_type = register_get_arch_type(reg->arch_type);
1663                         if (arch_type == NULL)
1664                         {
1665                                 LOG_ERROR("BUG: encountered unregistered arch type");
1666                                 return ERROR_OK;
1667                         }
1668                         arch_type->get(reg);
1669                 }
1670                 value = buf_to_str(reg->value, reg->size, 16);
1671                 command_print(cmd_ctx, "%s (/%i): 0x%s", reg->name, reg->size, value);
1672                 free(value);
1673                 return ERROR_OK;
1674         }
1675
1676         /* set register value */
1677         if (argc == 2)
1678         {
1679                 u8 *buf = malloc(CEIL(reg->size, 8));
1680                 str_to_buf(args[1], strlen(args[1]), buf, reg->size, 0);
1681
1682                 reg_arch_type_t *arch_type = register_get_arch_type(reg->arch_type);
1683                 if (arch_type == NULL)
1684                 {
1685                         LOG_ERROR("BUG: encountered unregistered arch type");
1686                         return ERROR_OK;
1687                 }
1688
1689                 arch_type->set(reg, buf);
1690
1691                 value = buf_to_str(reg->value, reg->size, 16);
1692                 command_print(cmd_ctx, "%s (/%i): 0x%s", reg->name, reg->size, value);
1693                 free(value);
1694
1695                 free(buf);
1696
1697                 return ERROR_OK;
1698         }
1699
1700         command_print(cmd_ctx, "usage: reg <#|name> [value]");
1701
1702         return ERROR_OK;
1703 }
1704
1705 static int wait_state(struct command_context_s *cmd_ctx, char *cmd, enum target_state state, int ms);
1706
1707 int handle_poll_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1708 {
1709         target_t *target = get_current_target(cmd_ctx);
1710
1711         if (argc == 0)
1712         {
1713                 target_poll(target);
1714                 target_arch_state(target);
1715         }
1716         else
1717         {
1718                 if (strcmp(args[0], "on") == 0)
1719                 {
1720                         target_continous_poll = 1;
1721                 }
1722                 else if (strcmp(args[0], "off") == 0)
1723                 {
1724                         target_continous_poll = 0;
1725                 }
1726                 else
1727                 {
1728                         command_print(cmd_ctx, "arg is \"on\" or \"off\"");
1729                 }
1730         }
1731
1732
1733         return ERROR_OK;
1734 }
1735
1736 int handle_wait_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1737 {
1738         int ms = 5000;
1739
1740         if (argc > 0)
1741         {
1742                 char *end;
1743
1744                 ms = strtoul(args[0], &end, 0) * 1000;
1745                 if (*end)
1746                 {
1747                         command_print(cmd_ctx, "usage: %s [seconds]", cmd);
1748                         return ERROR_OK;
1749                 }
1750         }
1751
1752         return wait_state(cmd_ctx, cmd, TARGET_HALTED, ms);
1753 }
1754
1755 static void target_process_events(struct command_context_s *cmd_ctx)
1756 {
1757         target_t *target = get_current_target(cmd_ctx);
1758         target_poll(target);
1759         target_call_timer_callbacks_now();
1760 }
1761
1762 static int wait_state(struct command_context_s *cmd_ctx, char *cmd, enum target_state state, int ms)
1763 {
1764         int retval;
1765         struct timeval timeout, now;
1766         int once=1;
1767         gettimeofday(&timeout, NULL);
1768         timeval_add_time(&timeout, 0, ms * 1000);
1769
1770         target_t *target = get_current_target(cmd_ctx);
1771         for (;;)
1772         {
1773                 if ((retval=target_poll(target))!=ERROR_OK)
1774                         return retval;
1775                 target_call_timer_callbacks_now();
1776                 if (target->state == state)
1777                 {
1778                         break;
1779                 }
1780                 if (once)
1781                 {
1782                         once=0;
1783                         command_print(cmd_ctx, "waiting for target %s...", target_state_strings[state]);
1784                 }
1785
1786                 gettimeofday(&now, NULL);
1787                 if ((now.tv_sec > timeout.tv_sec) || ((now.tv_sec == timeout.tv_sec) && (now.tv_usec >= timeout.tv_usec)))
1788                 {
1789                         LOG_ERROR("timed out while waiting for target %s", target_state_strings[state]);
1790                         break;
1791                 }
1792         }
1793
1794         return ERROR_OK;
1795 }
1796
1797 int handle_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1798 {
1799         int retval;
1800         target_t *target = get_current_target(cmd_ctx);
1801
1802         LOG_DEBUG("-");
1803
1804         if ((retval = target_halt(target)) != ERROR_OK)
1805         {
1806                 return retval;
1807         }
1808
1809         return handle_wait_halt_command(cmd_ctx, cmd, args, argc);
1810 }
1811
1812
1813 int handle_soft_reset_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1814 {
1815         target_t *target = get_current_target(cmd_ctx);
1816
1817         LOG_USER("requesting target halt and executing a soft reset");
1818
1819         target->type->soft_reset_halt(target);
1820
1821         return ERROR_OK;
1822 }
1823
1824 int handle_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1825 {
1826         target_t *target = get_current_target(cmd_ctx);
1827         enum target_reset_mode reset_mode = target->reset_mode;
1828         enum target_reset_mode save = target->reset_mode;
1829
1830         LOG_DEBUG("-");
1831
1832         if (argc >= 1)
1833         {
1834                 if (strcmp("run", args[0]) == 0)
1835                         reset_mode = RESET_RUN;
1836                 else if (strcmp("halt", args[0]) == 0)
1837                         reset_mode = RESET_HALT;
1838                 else if (strcmp("init", args[0]) == 0)
1839                         reset_mode = RESET_INIT;
1840                 else if (strcmp("run_and_halt", args[0]) == 0)
1841                 {
1842                         reset_mode = RESET_RUN_AND_HALT;
1843                         if (argc >= 2)
1844                         {
1845                                 target->run_and_halt_time = strtoul(args[1], NULL, 0);
1846                         }
1847                 }
1848                 else if (strcmp("run_and_init", args[0]) == 0)
1849                 {
1850                         reset_mode = RESET_RUN_AND_INIT;
1851                         if (argc >= 2)
1852                         {
1853                                 target->run_and_halt_time = strtoul(args[1], NULL, 0);
1854                         }
1855                 }
1856                 else
1857                 {
1858                         command_print(cmd_ctx, "usage: reset ['run', 'halt', 'init', 'run_and_halt', 'run_and_init]");
1859                         return ERROR_OK;
1860                 }
1861         }
1862
1863         /* temporarily modify mode of current reset target */
1864         target->reset_mode = reset_mode;
1865
1866         /* reset *all* targets */
1867         target_process_reset(cmd_ctx);
1868
1869         /* Restore default reset mode for this target */
1870     target->reset_mode = save;
1871
1872         return ERROR_OK;
1873 }
1874
1875 int handle_resume_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1876 {
1877         int retval;
1878         target_t *target = get_current_target(cmd_ctx);
1879
1880         if (argc == 0)
1881                 retval = target_resume(target, 1, 0, 1, 0); /* current pc, addr = 0, handle breakpoints, not debugging */
1882         else if (argc == 1)
1883                 retval = target_resume(target, 0, strtoul(args[0], NULL, 0), 1, 0); /* addr = args[0], handle breakpoints, not debugging */
1884         else
1885         {
1886                 return ERROR_COMMAND_SYNTAX_ERROR;
1887         }
1888
1889         target_process_events(cmd_ctx);
1890
1891         return retval;
1892 }
1893
1894 int handle_step_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1895 {
1896         target_t *target = get_current_target(cmd_ctx);
1897
1898         LOG_DEBUG("-");
1899
1900         if (argc == 0)
1901                 target->type->step(target, 1, 0, 1); /* current pc, addr = 0, handle breakpoints */
1902
1903         if (argc == 1)
1904                 target->type->step(target, 0, strtoul(args[0], NULL, 0), 1); /* addr = args[0], handle breakpoints */
1905
1906         return ERROR_OK;
1907 }
1908
1909 int handle_md_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1910 {
1911         const int line_bytecnt = 32;
1912         int count = 1;
1913         int size = 4;
1914         u32 address = 0;
1915         int line_modulo;
1916         int i;
1917
1918         char output[128];
1919         int output_len;
1920
1921         int retval;
1922
1923         u8 *buffer;
1924         target_t *target = get_current_target(cmd_ctx);
1925
1926         if (argc < 1)
1927                 return ERROR_OK;
1928
1929         if (argc == 2)
1930                 count = strtoul(args[1], NULL, 0);
1931
1932         address = strtoul(args[0], NULL, 0);
1933
1934
1935         switch (cmd[2])
1936         {
1937                 case 'w':
1938                         size = 4; line_modulo = line_bytecnt / 4;
1939                         break;
1940                 case 'h':
1941                         size = 2; line_modulo = line_bytecnt / 2;
1942                         break;
1943                 case 'b':
1944                         size = 1; line_modulo = line_bytecnt / 1;
1945                         break;
1946                 default:
1947                         return ERROR_OK;
1948         }
1949
1950         buffer = calloc(count, size);
1951         retval  = target->type->read_memory(target, address, size, count, buffer);
1952         if (retval == ERROR_OK)
1953         {
1954                 output_len = 0;
1955
1956                 for (i = 0; i < count; i++)
1957                 {
1958                         if (i%line_modulo == 0)
1959                                 output_len += snprintf(output + output_len, 128 - output_len, "0x%8.8x: ", address + (i*size));
1960
1961                         switch (size)
1962                         {
1963                                 case 4:
1964                                         output_len += snprintf(output + output_len, 128 - output_len, "%8.8x ", target_buffer_get_u32(target, &buffer[i*4]));
1965                                         break;
1966                                 case 2:
1967                                         output_len += snprintf(output + output_len, 128 - output_len, "%4.4x ", target_buffer_get_u16(target, &buffer[i*2]));
1968                                         break;
1969                                 case 1:
1970                                         output_len += snprintf(output + output_len, 128 - output_len, "%2.2x ", buffer[i*1]);
1971                                         break;
1972                         }
1973
1974                         if ((i%line_modulo == line_modulo-1) || (i == count - 1))
1975                         {
1976                                 command_print(cmd_ctx, output);
1977                                 output_len = 0;
1978                         }
1979                 }
1980         } else
1981         {
1982                 LOG_ERROR("Failure examining memory");
1983         }
1984
1985         free(buffer);
1986
1987         return ERROR_OK;
1988 }
1989
1990 int handle_mw_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1991 {
1992         u32 address = 0;
1993         u32 value = 0;
1994         int count = 1;
1995         int i;
1996         int wordsize;
1997         target_t *target = get_current_target(cmd_ctx);
1998         u8 value_buf[4];
1999
2000          if ((argc < 2) || (argc > 3))
2001                 return ERROR_COMMAND_SYNTAX_ERROR;
2002
2003         address = strtoul(args[0], NULL, 0);
2004         value = strtoul(args[1], NULL, 0);
2005         if (argc == 3)
2006                 count = strtoul(args[2], NULL, 0);
2007
2008
2009         switch (cmd[2])
2010         {
2011                 case 'w':
2012                         wordsize = 4;
2013                         target_buffer_set_u32(target, value_buf, value);
2014                         break;
2015                 case 'h':
2016                         wordsize = 2;
2017                         target_buffer_set_u16(target, value_buf, value);
2018                         break;
2019                 case 'b':
2020                         wordsize = 1;
2021                         value_buf[0] = value;
2022                         break;
2023                 default:
2024                         return ERROR_COMMAND_SYNTAX_ERROR;
2025         }
2026         for (i=0; i<count; i++)
2027         {
2028                 int retval;
2029                 switch (wordsize)
2030                 {
2031                         case 4:
2032                                 retval = target->type->write_memory(target, address + i*wordsize, 4, 1, value_buf);
2033                                 break;
2034                         case 2:
2035                                 retval = target->type->write_memory(target, address + i*wordsize, 2, 1, value_buf);
2036                                 break;
2037                         case 1:
2038                                 retval = target->type->write_memory(target, address + i*wordsize, 1, 1, value_buf);
2039                         break;
2040                         default:
2041                         return ERROR_OK;
2042                 }
2043                 if (retval!=ERROR_OK)
2044                 {
2045                         return retval;
2046                 }
2047         }
2048
2049         return ERROR_OK;
2050
2051 }
2052
2053 int handle_load_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2054 {
2055         u8 *buffer;
2056         u32 buf_cnt;
2057         u32 image_size;
2058         int i;
2059         int retval;
2060
2061         image_t image;
2062
2063         duration_t duration;
2064         char *duration_text;
2065
2066         target_t *target = get_current_target(cmd_ctx);
2067
2068         if (argc < 1)
2069         {
2070                 command_print(cmd_ctx, "usage: load_image <filename> [address] [type]");
2071                 return ERROR_OK;
2072         }
2073
2074         /* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */
2075         if (argc >= 2)
2076         {
2077                 image.base_address_set = 1;
2078                 image.base_address = strtoul(args[1], NULL, 0);
2079         }
2080         else
2081         {
2082                 image.base_address_set = 0;
2083         }
2084
2085         image.start_address_set = 0;
2086
2087         duration_start_measure(&duration);
2088
2089         if (image_open(&image, args[0], (argc >= 3) ? args[2] : NULL) != ERROR_OK)
2090         {
2091                 return ERROR_OK;
2092         }
2093
2094         image_size = 0x0;
2095         retval = ERROR_OK;
2096         for (i = 0; i < image.num_sections; i++)
2097         {
2098                 buffer = malloc(image.sections[i].size);
2099                 if (buffer == NULL)
2100                 {
2101                         command_print(cmd_ctx, "error allocating buffer for section (%d bytes)", image.sections[i].size);
2102                         break;
2103                 }
2104
2105                 if ((retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt)) != ERROR_OK)
2106                 {
2107                         free(buffer);
2108                         break;
2109                 }
2110                 if ((retval = target_write_buffer(target, image.sections[i].base_address, buf_cnt, buffer)) != ERROR_OK)
2111                 {
2112                         free(buffer);
2113                         break;
2114                 }
2115                 image_size += buf_cnt;
2116                 command_print(cmd_ctx, "%u byte written at address 0x%8.8x", buf_cnt, image.sections[i].base_address);
2117
2118                 free(buffer);
2119         }
2120
2121         duration_stop_measure(&duration, &duration_text);
2122         if (retval==ERROR_OK)
2123         {
2124                 command_print(cmd_ctx, "downloaded %u byte in %s", image_size, duration_text);
2125         }
2126         free(duration_text);
2127
2128         image_close(&image);
2129
2130         return retval;
2131
2132 }
2133
2134 int handle_dump_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2135 {
2136         fileio_t fileio;
2137
2138         u32 address;
2139         u32 size;
2140         u8 buffer[560];
2141         int retval=ERROR_OK;
2142
2143         duration_t duration;
2144         char *duration_text;
2145
2146         target_t *target = get_current_target(cmd_ctx);
2147
2148         if (argc != 3)
2149         {
2150                 command_print(cmd_ctx, "usage: dump_image <filename> <address> <size>");
2151                 return ERROR_OK;
2152         }
2153
2154         address = strtoul(args[1], NULL, 0);
2155         size = strtoul(args[2], NULL, 0);
2156
2157         if ((address & 3) || (size & 3))
2158         {
2159                 command_print(cmd_ctx, "only 32-bit aligned address and size are supported");
2160                 return ERROR_OK;
2161         }
2162
2163         if (fileio_open(&fileio, args[0], FILEIO_WRITE, FILEIO_BINARY) != ERROR_OK)
2164         {
2165                 return ERROR_OK;
2166         }
2167
2168         duration_start_measure(&duration);
2169
2170         while (size > 0)
2171         {
2172                 u32 size_written;
2173                 u32 this_run_size = (size > 560) ? 560 : size;
2174
2175                 retval = target->type->read_memory(target, address, 4, this_run_size / 4, buffer);
2176                 if (retval != ERROR_OK)
2177                 {
2178                         break;
2179                 }
2180
2181                 retval = fileio_write(&fileio, this_run_size, buffer, &size_written);
2182                 if (retval != ERROR_OK)
2183                 {
2184                         break;
2185                 }
2186
2187                 size -= this_run_size;
2188                 address += this_run_size;
2189         }
2190
2191         fileio_close(&fileio);
2192
2193         duration_stop_measure(&duration, &duration_text);
2194         if (retval==ERROR_OK)
2195         {
2196                 command_print(cmd_ctx, "dumped %"PRIi64" byte in %s", fileio.size, duration_text);
2197         }
2198         free(duration_text);
2199
2200         return ERROR_OK;
2201 }
2202
2203 int handle_verify_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2204 {
2205         u8 *buffer;
2206         u32 buf_cnt;
2207         u32 image_size;
2208         int i;
2209         int retval;
2210         u32 checksum = 0;
2211         u32 mem_checksum = 0;
2212
2213         image_t image;
2214
2215         duration_t duration;
2216         char *duration_text;
2217
2218         target_t *target = get_current_target(cmd_ctx);
2219
2220         if (argc < 1)
2221         {
2222                 return ERROR_COMMAND_SYNTAX_ERROR;
2223         }
2224
2225         if (!target)
2226         {
2227                 LOG_ERROR("no target selected");
2228                 return ERROR_FAIL;
2229         }
2230
2231         duration_start_measure(&duration);
2232
2233         if (argc >= 2)
2234         {
2235                 image.base_address_set = 1;
2236                 image.base_address = strtoul(args[1], NULL, 0);
2237         }
2238         else
2239         {
2240                 image.base_address_set = 0;
2241                 image.base_address = 0x0;
2242         }
2243
2244         image.start_address_set = 0;
2245
2246         if ((retval=image_open(&image, args[0], (argc == 3) ? args[2] : NULL)) != ERROR_OK)
2247         {
2248                 return retval;
2249         }
2250
2251         image_size = 0x0;
2252         retval=ERROR_OK;
2253         for (i = 0; i < image.num_sections; i++)
2254         {
2255                 buffer = malloc(image.sections[i].size);
2256                 if (buffer == NULL)
2257                 {
2258                         command_print(cmd_ctx, "error allocating buffer for section (%d bytes)", image.sections[i].size);
2259                         break;
2260                 }
2261                 if ((retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt)) != ERROR_OK)
2262                 {
2263                         free(buffer);
2264                         break;
2265                 }
2266
2267                 /* calculate checksum of image */
2268                 image_calculate_checksum( buffer, buf_cnt, &checksum );
2269
2270                 retval = target_checksum_memory(target, image.sections[i].base_address, buf_cnt, &mem_checksum);
2271                 if( retval != ERROR_OK )
2272                 {
2273                         free(buffer);
2274                         break;
2275                 }
2276
2277                 if( checksum != mem_checksum )
2278                 {
2279                         /* failed crc checksum, fall back to a binary compare */
2280                         u8 *data;
2281
2282                         command_print(cmd_ctx, "checksum mismatch - attempting binary compare");
2283
2284                         data = (u8*)malloc(buf_cnt);
2285
2286                         /* Can we use 32bit word accesses? */
2287                         int size = 1;
2288                         int count = buf_cnt;
2289                         if ((count % 4) == 0)
2290                         {
2291                                 size *= 4;
2292                                 count /= 4;
2293                         }
2294                         retval = target->type->read_memory(target, image.sections[i].base_address, size, count, data);
2295                         if (retval == ERROR_OK)
2296                         {
2297                                 int t;
2298                                 for (t = 0; t < buf_cnt; t++)
2299                                 {
2300                                         if (data[t] != buffer[t])
2301                                         {
2302                                                 command_print(cmd_ctx, "Verify operation failed address 0x%08x. Was 0x%02x instead of 0x%02x\n", t + image.sections[i].base_address, data[t], buffer[t]);
2303                                                 free(data);
2304                                                 free(buffer);
2305                                                 retval=ERROR_FAIL;
2306                                                 goto done;
2307                                         }
2308                                 }
2309                         }
2310
2311                         free(data);
2312                 }
2313
2314                 free(buffer);
2315                 image_size += buf_cnt;
2316         }
2317 done:
2318         duration_stop_measure(&duration, &duration_text);
2319         if (retval==ERROR_OK)
2320         {
2321                 command_print(cmd_ctx, "verified %u bytes in %s", image_size, duration_text);
2322         }
2323         free(duration_text);
2324
2325         image_close(&image);
2326
2327         return retval;
2328 }
2329
2330 int handle_bp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2331 {
2332         int retval;
2333         target_t *target = get_current_target(cmd_ctx);
2334
2335         if (argc == 0)
2336         {
2337                 breakpoint_t *breakpoint = target->breakpoints;
2338
2339                 while (breakpoint)
2340                 {
2341                         if (breakpoint->type == BKPT_SOFT)
2342                         {
2343                                 char* buf = buf_to_str(breakpoint->orig_instr, breakpoint->length, 16);
2344                                 command_print(cmd_ctx, "0x%8.8x, 0x%x, %i, 0x%s", breakpoint->address, breakpoint->length, breakpoint->set, buf);
2345                                 free(buf);
2346                         }
2347                         else
2348                         {
2349                                 command_print(cmd_ctx, "0x%8.8x, 0x%x, %i", breakpoint->address, breakpoint->length, breakpoint->set);
2350                         }
2351                         breakpoint = breakpoint->next;
2352                 }
2353         }
2354         else if (argc >= 2)
2355         {
2356                 int hw = BKPT_SOFT;
2357                 u32 length = 0;
2358
2359                 length = strtoul(args[1], NULL, 0);
2360
2361                 if (argc >= 3)
2362                         if (strcmp(args[2], "hw") == 0)
2363                                 hw = BKPT_HARD;
2364
2365                 if ((retval = breakpoint_add(target, strtoul(args[0], NULL, 0), length, hw)) != ERROR_OK)
2366                 {
2367                         LOG_ERROR("Failure setting breakpoints");
2368                 }
2369                 else
2370                 {
2371                         command_print(cmd_ctx, "breakpoint added at address 0x%8.8x", strtoul(args[0], NULL, 0));
2372                 }
2373         }
2374         else
2375         {
2376                 command_print(cmd_ctx, "usage: bp <address> <length> ['hw']");
2377         }
2378
2379         return ERROR_OK;
2380 }
2381
2382 int handle_rbp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2383 {
2384         target_t *target = get_current_target(cmd_ctx);
2385
2386         if (argc > 0)
2387                 breakpoint_remove(target, strtoul(args[0], NULL, 0));
2388
2389         return ERROR_OK;
2390 }
2391
2392 int handle_wp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2393 {
2394         target_t *target = get_current_target(cmd_ctx);
2395         int retval;
2396
2397         if (argc == 0)
2398         {
2399                 watchpoint_t *watchpoint = target->watchpoints;
2400
2401                 while (watchpoint)
2402                 {
2403                         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);
2404                         watchpoint = watchpoint->next;
2405                 }
2406         }
2407         else if (argc >= 2)
2408         {
2409                 enum watchpoint_rw type = WPT_ACCESS;
2410                 u32 data_value = 0x0;
2411                 u32 data_mask = 0xffffffff;
2412
2413                 if (argc >= 3)
2414                 {
2415                         switch(args[2][0])
2416                         {
2417                                 case 'r':
2418                                         type = WPT_READ;
2419                                         break;
2420                                 case 'w':
2421                                         type = WPT_WRITE;
2422                                         break;
2423                                 case 'a':
2424                                         type = WPT_ACCESS;
2425                                         break;
2426                                 default:
2427                                         command_print(cmd_ctx, "usage: wp <address> <length> [r/w/a] [value] [mask]");
2428                                         return ERROR_OK;
2429                         }
2430                 }
2431                 if (argc >= 4)
2432                 {
2433                         data_value = strtoul(args[3], NULL, 0);
2434                 }
2435                 if (argc >= 5)
2436                 {
2437                         data_mask = strtoul(args[4], NULL, 0);
2438                 }
2439
2440                 if ((retval = watchpoint_add(target, strtoul(args[0], NULL, 0),
2441                                 strtoul(args[1], NULL, 0), type, data_value, data_mask)) != ERROR_OK)
2442                 {
2443                         LOG_ERROR("Failure setting breakpoints");
2444                 }
2445         }
2446         else
2447         {
2448                 command_print(cmd_ctx, "usage: wp <address> <length> [r/w/a] [value] [mask]");
2449         }
2450
2451         return ERROR_OK;
2452 }
2453
2454 int handle_rwp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2455 {
2456         target_t *target = get_current_target(cmd_ctx);
2457
2458         if (argc > 0)
2459                 watchpoint_remove(target, strtoul(args[0], NULL, 0));
2460
2461         return ERROR_OK;
2462 }
2463
2464 int handle_virt2phys_command(command_context_t *cmd_ctx, char *cmd, char **args, int argc)
2465 {
2466         int retval;
2467         target_t *target = get_current_target(cmd_ctx);
2468         u32 va;
2469         u32 pa;
2470
2471         if (argc != 1)
2472         {
2473                 return ERROR_COMMAND_SYNTAX_ERROR;
2474         }
2475         va = strtoul(args[0], NULL, 0);
2476
2477         retval = target->type->virt2phys(target, va, &pa);
2478         if (retval == ERROR_OK)
2479         {
2480                 command_print(cmd_ctx, "Physical address 0x%08x", pa);
2481         }
2482         else
2483         {
2484                 /* lower levels will have logged a detailed error which is
2485                  * forwarded to telnet/GDB session.
2486                  */
2487         }
2488         return retval;
2489 }
2490 static void writeLong(FILE *f, int l)
2491 {
2492         int i;
2493         for (i=0; i<4; i++)
2494         {
2495                 char c=(l>>(i*8))&0xff;
2496                 fwrite(&c, 1, 1, f);
2497         }
2498
2499 }
2500 static void writeString(FILE *f, char *s)
2501 {
2502         fwrite(s, 1, strlen(s), f);
2503 }
2504
2505
2506
2507 // Dump a gmon.out histogram file.
2508 static void writeGmon(u32 *samples, int sampleNum, char *filename)
2509 {
2510         int i;
2511         FILE *f=fopen(filename, "w");
2512         if (f==NULL)
2513                 return;
2514         fwrite("gmon", 1, 4, f);
2515         writeLong(f, 0x00000001); // Version
2516         writeLong(f, 0); // padding
2517         writeLong(f, 0); // padding
2518         writeLong(f, 0); // padding
2519
2520         fwrite("", 1, 1, f);  // GMON_TAG_TIME_HIST
2521
2522         // figure out bucket size
2523         u32 min=samples[0];
2524         u32 max=samples[0];
2525         for (i=0; i<sampleNum; i++)
2526         {
2527                 if (min>samples[i])
2528                 {
2529                         min=samples[i];
2530                 }
2531                 if (max<samples[i])
2532                 {
2533                         max=samples[i];
2534                 }
2535         }
2536
2537         int addressSpace=(max-min+1);
2538
2539         static int const maxBuckets=256*1024; // maximum buckets.
2540         int length=addressSpace;
2541         if (length > maxBuckets)
2542         {
2543                 length=maxBuckets;
2544         }
2545         int *buckets=malloc(sizeof(int)*length);
2546         if (buckets==NULL)
2547         {
2548                 fclose(f);
2549                 return;
2550         }
2551         memset(buckets, 0, sizeof(int)*length);
2552         for (i=0; i<sampleNum;i++)
2553         {
2554                 u32 address=samples[i];
2555                 long long a=address-min;
2556                 long long b=length-1;
2557                 long long c=addressSpace-1;
2558                 int index=(a*b)/c; // danger!!!! int32 overflows
2559                 buckets[index]++;
2560         }
2561
2562         //                         append binary memory gmon.out &profile_hist_hdr ((char*)&profile_hist_hdr + sizeof(struct gmon_hist_hdr))
2563         writeLong(f, min);                                      // low_pc
2564         writeLong(f, max);              // high_pc
2565         writeLong(f, length);           // # of samples
2566         writeLong(f, 64000000);                         // 64MHz
2567         writeString(f, "seconds");
2568         for (i=0; i<(15-strlen("seconds")); i++)
2569         {
2570                 fwrite("", 1, 1, f);  // padding
2571         }
2572         writeString(f, "s");
2573
2574 //                         append binary memory gmon.out profile_hist_data (profile_hist_data + profile_hist_hdr.hist_size)
2575
2576         char *data=malloc(2*length);
2577         if (data!=NULL)
2578         {
2579                 for (i=0; i<length;i++)
2580                 {
2581                         int val;
2582                         val=buckets[i];
2583                         if (val>65535)
2584                         {
2585                                 val=65535;
2586                         }
2587                         data[i*2]=val&0xff;
2588                         data[i*2+1]=(val>>8)&0xff;
2589                 }
2590                 free(buckets);
2591                 fwrite(data, 1, length*2, f);
2592                 free(data);
2593         } else
2594         {
2595                 free(buckets);
2596         }
2597
2598         fclose(f);
2599 }
2600
2601 /* profiling samples the CPU PC as quickly as OpenOCD is able, which will be used as a random sampling of PC */
2602 int handle_profile_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2603 {
2604         target_t *target = get_current_target(cmd_ctx);
2605         struct timeval timeout, now;
2606
2607         gettimeofday(&timeout, NULL);
2608         if (argc!=2)
2609         {
2610                 return ERROR_COMMAND_SYNTAX_ERROR;
2611         }
2612         char *end;
2613         timeval_add_time(&timeout, strtoul(args[0], &end, 0), 0);
2614         if (*end)
2615         {
2616                 return ERROR_OK;
2617         }
2618
2619         command_print(cmd_ctx, "Starting profiling. Halting and resuming the target as often as we can...");
2620
2621         static const int maxSample=10000;
2622         u32 *samples=malloc(sizeof(u32)*maxSample);
2623         if (samples==NULL)
2624                 return ERROR_OK;
2625
2626         int numSamples=0;
2627         int retval=ERROR_OK;
2628         // hopefully it is safe to cache! We want to stop/restart as quickly as possible.
2629         reg_t *reg = register_get_by_name(target->reg_cache, "pc", 1);
2630
2631         for (;;)
2632         {
2633                 target_poll(target);
2634                 if (target->state == TARGET_HALTED)
2635                 {
2636                         u32 t=*((u32 *)reg->value);
2637                         samples[numSamples++]=t;
2638                         retval = target_resume(target, 1, 0, 0, 0); /* current pc, addr = 0, do not handle breakpoints, not debugging */
2639                         target_poll(target);
2640                         usleep(10*1000); // sleep 10ms, i.e. <100 samples/second.
2641                 } else if (target->state == TARGET_RUNNING)
2642                 {
2643                         // We want to quickly sample the PC.
2644                         target_halt(target);
2645                 } else
2646                 {
2647                         command_print(cmd_ctx, "Target not halted or running");
2648                         retval=ERROR_OK;
2649                         break;
2650                 }
2651                 if (retval!=ERROR_OK)
2652                 {
2653                         break;
2654                 }
2655
2656                 gettimeofday(&now, NULL);
2657                 if ((numSamples>=maxSample) || ((now.tv_sec >= timeout.tv_sec) && (now.tv_usec >= timeout.tv_usec)))
2658                 {
2659                         command_print(cmd_ctx, "Profiling completed. %d samples.", numSamples);
2660                         target_poll(target);
2661                         if (target->state == TARGET_HALTED)
2662                         {
2663                                 target_resume(target, 1, 0, 0, 0); /* current pc, addr = 0, do not handle breakpoints, not debugging */
2664                         }
2665                         target_poll(target);
2666                         writeGmon(samples, numSamples, args[1]);
2667                         command_print(cmd_ctx, "Wrote %s", args[1]);
2668                         break;
2669                 }
2670         }
2671         free(samples);
2672
2673         return ERROR_OK;
2674 }
2675