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   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   Copyright (C) 2007,2008 Øyvind Harboe                                 *
   6  *   oyvind.harboe@zylin.com                                               *
   7  *                                                                         *
   8  *   Copyright (C) 2008, Duane Ellis                                       *
   9  *   openocd@duaneeellis.com                                               *
  10  *                                                                         *
  11  *   part of this file is taken from libcli (libcli.sourceforge.net)       *
  12  *   Copyright (C) David Parrish (david@dparrish.com)                      *
  13  *                                                                         *
  14  *   This program is free software; you can redistribute it and/or modify  *
  15  *   it under the terms of the GNU General Public License as published by  *
  16  *   the Free Software Foundation; either version 2 of the License, or     *
  17  *   (at your option) any later version.                                   *
  18  *                                                                         *
  19  *   This program is distributed in the hope that it will be useful,       *
  20  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  21  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  22  *   GNU General Public License for more details.                          *
  23  *                                                                         *
  24  *   You should have received a copy of the GNU General Public License     *
  25  *   along with this program; if not, write to the                         *
  26  *   Free Software Foundation, Inc.,                                       *
  27  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  28  ***************************************************************************/
  29 #ifdef HAVE_CONFIG_H
  30 #include "config.h"
  31 #endif
  32
  33 #if !BUILD_ECOSBOARD
  34 /* see Embedder-HOWTO.txt in Jim Tcl project hosted on BerliOS*/
  35 #define JIM_EMBEDDED
  36 #endif
  37
  38 // @todo the inclusion of target.h here is a layering violation
  39 #include "target.h"
  40 #include "command.h"
  41 #include "configuration.h"
  42 #include "log.h"
  43 #include "time_support.h"
  44 #include "jim-eventloop.h"
  45
  46
  47 /* nice short description of source file */
  48 #define __THIS__FILE__ "command.c"
  49
  50
  51 static int run_command(struct command_context *context,
  52                 struct command *c, const char *words[], unsigned num_words);
  53
  54 struct log_capture_state {
  55         Jim_Interp *interp;
  56         Jim_Obj *output;
  57 };
  58
  59 static void tcl_output(void *privData, const char *file, unsigned line,
  60                 const char *function, const char *string)
  61 {
  62         struct log_capture_state *state = (struct log_capture_state *)privData;
  63         Jim_AppendString(state->interp, state->output, string, strlen(string));
  64 }
  65
  66 static struct log_capture_state *command_log_capture_start(Jim_Interp *interp)
  67 {
  68         /* capture log output and return it. A garbage collect can
  69          * happen, so we need a reference count to this object */
  70         Jim_Obj *tclOutput = Jim_NewStringObj(interp, "", 0);
  71         if (NULL == tclOutput)
  72                 return NULL;
  73
  74         struct log_capture_state *state = malloc(sizeof(*state));
  75         if (NULL == state)
  76                 return NULL;
  77
  78         state->interp = interp;
  79         Jim_IncrRefCount(tclOutput);
  80         state->output = tclOutput;
  81
  82         log_add_callback(tcl_output, state);
  83
  84         return state;
  85 }
  86
  87 static void command_log_capture_finish(struct log_capture_state *state)
  88 {
  89         if (NULL == state)
  90                 return;
  91
  92         log_remove_callback(tcl_output, state);
  93
  94         Jim_SetResult(state->interp, state->output);
  95         Jim_DecrRefCount(state->interp, state->output);
  96
  97         free(state);
  98 }
  99
 100 static int command_retval_set(Jim_Interp *interp, int retval)
 101 {
 102         int *return_retval = Jim_GetAssocData(interp, "retval");
 103         if (return_retval != NULL)
 104                 *return_retval = retval;
 105
 106         return (retval == ERROR_OK) ? JIM_OK : JIM_ERR;
 107 }
 108
 109 extern struct command_context *global_cmd_ctx;
 110
 111 void script_debug(Jim_Interp *interp, const char *name,
 112                 unsigned argc, Jim_Obj *const *argv)
 113 {
 114         LOG_DEBUG("command - %s", name);
 115         for (unsigned i = 0; i < argc; i++)
 116         {
 117                 int len;
 118                 const char *w = Jim_GetString(argv[i], &len);
 119
 120                 /* end of line comment? */
 121                 if (*w == '#')
 122                         break;
 123
 124                 LOG_DEBUG("%s - argv[%d]=%s", name, i, w);
 125         }
 126 }
 127
 128 static void script_command_args_free(const char **words, unsigned nwords)
 129 {
 130         for (unsigned i = 0; i < nwords; i++)
 131                 free((void *)words[i]);
 132         free(words);
 133 }
 134 static const char **script_command_args_alloc(
 135                 unsigned argc, Jim_Obj *const *argv, unsigned *nwords)
 136 {
 137         const char **words = malloc(argc * sizeof(char *));
 138         if (NULL == words)
 139                 return NULL;
 140
 141         unsigned i;
 142         for (i = 0; i < argc; i++)
 143         {
 144                 int len;
 145                 const char *w = Jim_GetString(argv[i], &len);
 146                 /* a comment may end the line early */
 147                 if (*w == '#')
 148                         break;
 149
 150                 words[i] = strdup(w);
 151                 if (words[i] == NULL)
 152                 {
 153                         script_command_args_free(words, i);
 154                         return NULL;
 155                 }
 156         }
 157         *nwords = i;
 158         return words;
 159 }
 160
 161 static struct command_context *current_command_context(Jim_Interp *interp)
 162 {
 163         /* grab the command context from the associated data */
 164         struct command_context *cmd_ctx = Jim_GetAssocData(interp, "context");
 165         if (NULL == cmd_ctx)
 166         {
 167                 /* Tcl can invoke commands directly instead of via command_run_line(). This would
 168                  * happen when the Jim Tcl interpreter is provided by eCos.
 169                  */
 170                 cmd_ctx = global_cmd_ctx;
 171         }
 172         return cmd_ctx;
 173 }
 174
 175 static int script_command_run(Jim_Interp *interp,
 176                 int argc, Jim_Obj *const *argv, struct command *c, bool capture)
 177 {
 178         target_call_timer_callbacks_now();
 179         LOG_USER_N("%s", ""); /* Keep GDB connection alive*/
 180
 181         unsigned nwords;
 182         const char **words = script_command_args_alloc(argc, argv, &nwords);
 183         if (NULL == words)
 184                 return JIM_ERR;
 185
 186         struct log_capture_state *state = NULL;
 187         if (capture)
 188                 state = command_log_capture_start(interp);
 189
 190         struct command_context *cmd_ctx = current_command_context(interp);
 191         int retval = run_command(cmd_ctx, c, (const char **)words, nwords);
 192
 193         command_log_capture_finish(state);
 194
 195         script_command_args_free(words, nwords);
 196         return command_retval_set(interp, retval);
 197 }
 198
 199 static int script_command(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 200 {
 201         /* the private data is stashed in the interp structure */
 202
 203         struct command *c = interp->cmdPrivData;
 204         assert(c);
 205         script_debug(interp, c->name, argc, argv);
 206         return script_command_run(interp, argc, argv, c, true);
 207 }
 208
 209 static struct command *command_root(struct command *c)
 210 {
 211         while (NULL != c->parent)
 212                 c = c->parent;
 213         return c;
 214 }
 215
 216 /**
 217  * Find a command by name from a list of commands.
 218  * @returns Returns the named command if it exists in the list.
 219  * Returns NULL otherwise.
 220  */
 221 static struct command *command_find(struct command *head, const char *name)
 222 {
 223         for (struct command *cc = head; cc; cc = cc->next)
 224         {
 225                 if (strcmp(cc->name, name) == 0)
 226                         return cc;
 227         }
 228         return NULL;
 229 }
 230 struct command *command_find_in_context(struct command_context *cmd_ctx,
 231                 const char *name)
 232 {
 233         return command_find(cmd_ctx->commands, name);
 234 }
 235 struct command *command_find_in_parent(struct command *parent,
 236                 const char *name)
 237 {
 238         return command_find(parent->children, name);
 239 }
 240
 241 /**
 242  * Add the command into the linked list, sorted by name.
 243  * @param head Address to head of command list pointer, which may be
 244  * updated if @c c gets inserted at the beginning of the list.
 245  * @param c The command to add to the list pointed to by @c head.
 246  */
 247 static void command_add_child(struct command **head, struct command *c)
 248 {
 249         assert(head);
 250         if (NULL == *head)
 251         {
 252                 *head = c;
 253                 return;
 254         }
 255
 256         while ((*head)->next && (strcmp(c->name, (*head)->name) > 0))
 257                 head = &(*head)->next;
 258
 259         if (strcmp(c->name, (*head)->name) > 0) {
 260                 c->next = (*head)->next;
 261                 (*head)->next = c;
 262         } else {
 263                 c->next = *head;
 264                 *head = c;
 265         }
 266 }
 267
 268 static struct command **command_list_for_parent(
 269                 struct command_context *cmd_ctx, struct command *parent)
 270 {
 271         return parent ? &parent->children : &cmd_ctx->commands;
 272 }
 273
 274 static void command_free(struct command *c)
 275 {
 276         /// @todo if command has a handler, unregister its jim command!
 277
 278         while (NULL != c->children)
 279         {
 280                 struct command *tmp = c->children;
 281                 c->children = tmp->next;
 282                 command_free(tmp);
 283         }
 284
 285         if (c->name)
 286                 free(c->name);
 287         if (c->help)
 288                 free((void*)c->help);
 289         if (c->usage)
 290                 free((void*)c->usage);
 291         free(c);
 292 }
 293
 294 static struct command *command_new(struct command_context *cmd_ctx,
 295                 struct command *parent, const struct command_registration *cr)
 296 {
 297         assert(cr->name);
 298
 299         struct command *c = calloc(1, sizeof(struct command));
 300         if (NULL == c)
 301                 return NULL;
 302
 303         c->name = strdup(cr->name);
 304         if (cr->help)
 305                 c->help = strdup(cr->help);
 306         if (cr->usage)
 307                 c->usage = strdup(cr->usage);
 308
 309         if (!c->name || (cr->help && !c->help) || (cr->usage && !c->usage))
 310                 goto command_new_error;
 311
 312         c->parent = parent;
 313         c->handler = cr->handler;
 314         c->jim_handler = cr->jim_handler;
 315         c->jim_handler_data = cr->jim_handler_data;
 316         c->mode = cr->mode;
 317
 318         command_add_child(command_list_for_parent(cmd_ctx, parent), c);
 319
 320         return c;
 321
 322 command_new_error:
 323         command_free(c);
 324         return NULL;
 325 }
 326
 327 static int command_unknown(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
 328
 329 static int register_command_handler(struct command_context *cmd_ctx,
 330                 struct command *c)
 331 {
 332         Jim_Interp *interp = cmd_ctx->interp;
 333         const char *ocd_name = alloc_printf("ocd_%s", c->name);
 334         if (NULL == ocd_name)
 335                 return JIM_ERR;
 336
 337         LOG_DEBUG("registering '%s'...", ocd_name);
 338
 339         Jim_CmdProc func = c->handler ? &script_command : &command_unknown;
 340         int retval = Jim_CreateCommand(interp, ocd_name, func, c, NULL);
 341         free((void *)ocd_name);
 342         if (JIM_OK != retval)
 343                 return retval;
 344
 345         /* we now need to add an overrideable proc */
 346         const char *override_name = alloc_printf(
 347                         "proc %s {args} {eval ocd_bouncer %s $args}",
 348                         c->name, c->name);
 349         if (NULL == override_name)
 350                 return JIM_ERR;
 351
 352         retval = Jim_Eval_Named(interp, override_name, __FILE__, __LINE__);
 353         free((void *)override_name);
 354
 355         return retval;
 356 }
 357
 358 struct command* register_command(struct command_context *context,
 359                 struct command *parent, const struct command_registration *cr)
 360 {
 361         if (!context || !cr->name)
 362                 return NULL;
 363
 364         const char *name = cr->name;
 365         struct command **head = command_list_for_parent(context, parent);
 366         struct command *c = command_find(*head, name);
 367         if (NULL != c)
 368         {
 369                 LOG_ERROR("command '%s' is already registered in '%s' context",
 370                                 name, parent ? parent->name : "<global>");
 371                 return c;
 372         }
 373
 374         c = command_new(context, parent, cr);
 375         if (NULL == c)
 376                 return NULL;
 377
 378         int retval = ERROR_OK;
 379         if (NULL != cr->jim_handler && NULL == parent)
 380         {
 381                 retval = Jim_CreateCommand(context->interp, cr->name,
 382                                 cr->jim_handler, cr->jim_handler_data, NULL);
 383         }
 384         else if (NULL != cr->handler || NULL != parent)
 385                 retval = register_command_handler(context, command_root(c));
 386
 387         if (ERROR_OK != retval)
 388         {
 389                 unregister_command(context, parent, name);
 390                 c = NULL;
 391         }
 392         return c;
 393 }
 394
 395 int register_commands(struct command_context *cmd_ctx, struct command *parent,
 396                 const struct command_registration *cmds)
 397 {
 398         int retval = ERROR_OK;
 399         unsigned i;
 400         for (i = 0; cmds[i].name || cmds[i].chain; i++)
 401         {
 402                 const struct command_registration *cr = cmds + i;
 403
 404                 struct command *c = NULL;
 405                 if (NULL != cr->name)
 406                 {
 407                         c = register_command(cmd_ctx, parent, cr);
 408                         if (NULL == c)
 409                         {
 410                                 retval = ERROR_FAIL;
 411                                 break;
 412                         }
 413                 }
 414                 if (NULL != cr->chain)
 415                 {
 416                         struct command *p = c ? : parent;
 417                         retval = register_commands(cmd_ctx, p, cr->chain);
 418                         if (ERROR_OK != retval)
 419                                 break;
 420                 }
 421         }
 422         if (ERROR_OK != retval)
 423         {
 424                 for (unsigned j = 0; j < i; j++)
 425                         unregister_command(cmd_ctx, parent, cmds[j].name);
 426         }
 427         return retval;
 428 }
 429
 430 int unregister_all_commands(struct command_context *context,
 431                 struct command *parent)
 432 {
 433         if (context == NULL)
 434                 return ERROR_OK;
 435
 436         struct command **head = command_list_for_parent(context, parent);
 437         while (NULL != *head)
 438         {
 439                 struct command *tmp = *head;
 440                 *head = tmp->next;
 441                 command_free(tmp);
 442         }
 443
 444         return ERROR_OK;
 445 }
 446
 447 int unregister_command(struct command_context *context,
 448                 struct command *parent, const char *name)
 449 {
 450         if ((!context) || (!name))
 451                 return ERROR_INVALID_ARGUMENTS;
 452
 453         struct command *p = NULL;
 454         struct command **head = command_list_for_parent(context, parent);
 455         for (struct command *c = *head; NULL != c; p = c, c = c->next)
 456         {
 457                 if (strcmp(name, c->name) != 0)
 458                         continue;
 459
 460                 if (p)
 461                         p->next = c->next;
 462                 else
 463                         *head = c->next;
 464
 465                 command_free(c);
 466                 return ERROR_OK;
 467         }
 468
 469         return ERROR_OK;
 470 }
 471
 472 void command_set_handler_data(struct command *c, void *p)
 473 {
 474         if (NULL != c->handler || NULL != c->jim_handler)
 475                 c->jim_handler_data = p;
 476         for (struct command *cc = c->children; NULL != cc; cc = cc->next)
 477                 command_set_handler_data(cc, p);
 478 }
 479
 480 void command_output_text(struct command_context *context, const char *data)
 481 {
 482         if (context && context->output_handler && data) {
 483                 context->output_handler(context, data);
 484         }
 485 }
 486
 487 void command_print_sameline(struct command_context *context, const char *format, ...)
 488 {
 489         char *string;
 490
 491         va_list ap;
 492         va_start(ap, format);
 493
 494         string = alloc_vprintf(format, ap);
 495         if (string != NULL)
 496         {
 497                 /* we want this collected in the log + we also want to pick it up as a tcl return
 498                  * value.
 499                  *
 500                  * The latter bit isn't precisely neat, but will do for now.
 501                  */
 502                 LOG_USER_N("%s", string);
 503                 /* We already printed it above */
 504                 /* command_output_text(context, string); */
 505                 free(string);
 506         }
 507
 508         va_end(ap);
 509 }
 510
 511 void command_print(struct command_context *context, const char *format, ...)
 512 {
 513         char *string;
 514
 515         va_list ap;
 516         va_start(ap, format);
 517
 518         string = alloc_vprintf(format, ap);
 519         if (string != NULL)
 520         {
 521                 strcat(string, "\n"); /* alloc_vprintf guaranteed the buffer to be at least one char longer */
 522                 /* we want this collected in the log + we also want to pick it up as a tcl return
 523                  * value.
 524                  *
 525                  * The latter bit isn't precisely neat, but will do for now.
 526                  */
 527                 LOG_USER_N("%s", string);
 528                 /* We already printed it above */
 529                 /* command_output_text(context, string); */
 530                 free(string);
 531         }
 532
 533         va_end(ap);
 534 }
 535
 536 static char *__command_name(struct command *c, char delim, unsigned extra)
 537 {
 538         char *name;
 539         unsigned len = strlen(c->name);
 540         if (NULL == c->parent) {
 541                 // allocate enough for the name, child names, and '\0'
 542                 name = malloc(len + extra + 1);
 543                 strcpy(name, c->name);
 544         } else {
 545                 // parent's extra must include both the space and name
 546                 name = __command_name(c->parent, delim, 1 + len + extra);
 547                 char dstr[2] = { delim, 0 };
 548                 strcat(name, dstr);
 549                 strcat(name, c->name);
 550         }
 551         return name;
 552 }
 553 char *command_name(struct command *c, char delim)
 554 {
 555         return __command_name(c, delim, 0);
 556 }
 557
 558 static bool command_can_run(struct command_context *cmd_ctx, struct command *c)
 559 {
 560         return c->mode == COMMAND_ANY || c->mode == cmd_ctx->mode;
 561 }
 562
 563 static int run_command(struct command_context *context,
 564                 struct command *c, const char *words[], unsigned num_words)
 565 {
 566         if (!command_can_run(context, c))
 567         {
 568                 /* Config commands can not run after the config stage */
 569                 LOG_ERROR("The '%s' command must be used before 'init'.", c->name);
 570                 return ERROR_FAIL;
 571         }
 572
 573         struct command_invocation cmd = {
 574                         .ctx = context,
 575                         .name = c->name,
 576                         .argc = num_words - 1,
 577                         .argv = words + 1,
 578                 };
 579         int retval = c->handler(&cmd);
 580         if (retval == ERROR_COMMAND_SYNTAX_ERROR)
 581         {
 582                 /* Print help for command */
 583                 char *full_name = command_name(c, ' ');
 584                 if (NULL != full_name) {
 585                         command_run_linef(context, "usage %s", full_name);
 586                         free(full_name);
 587                 } else
 588                         retval = -ENOMEM;
 589         }
 590         else if (retval == ERROR_COMMAND_CLOSE_CONNECTION)
 591         {
 592                 /* just fall through for a shutdown request */
 593         }
 594         else if (retval != ERROR_OK)
 595         {
 596                 /* we do not print out an error message because the command *should*
 597                  * have printed out an error
 598                  */
 599                 LOG_DEBUG("Command failed with error code %d", retval);
 600         }
 601
 602         return retval;
 603 }
 604
 605 int command_run_line(struct command_context *context, char *line)
 606 {
 607         /* all the parent commands have been registered with the interpreter
 608          * so, can just evaluate the line as a script and check for
 609          * results
 610          */
 611         /* run the line thru a script engine */
 612         int retval = ERROR_FAIL;
 613         int retcode;
 614         /* Beware! This code needs to be reentrant. It is also possible
 615          * for OpenOCD commands to be invoked directly from Tcl. This would
 616          * happen when the Jim Tcl interpreter is provided by eCos for
 617          * instance.
 618          */
 619         Jim_Interp *interp = context->interp;
 620         Jim_DeleteAssocData(interp, "context");
 621         retcode = Jim_SetAssocData(interp, "context", NULL, context);
 622         if (retcode == JIM_OK)
 623         {
 624                 /* associated the return value */
 625                 Jim_DeleteAssocData(interp, "retval");
 626                 retcode = Jim_SetAssocData(interp, "retval", NULL, &retval);
 627                 if (retcode == JIM_OK)
 628                 {
 629                         retcode = Jim_Eval_Named(interp, line, __THIS__FILE__, __LINE__);
 630
 631                         Jim_DeleteAssocData(interp, "retval");
 632                 }
 633                 Jim_DeleteAssocData(interp, "context");
 634         }
 635         if (retcode == JIM_ERR) {
 636                 if (retval != ERROR_COMMAND_CLOSE_CONNECTION)
 637                 {
 638                         /* We do not print the connection closed error message */
 639                         Jim_PrintErrorMessage(interp);
 640                 }
 641                 if (retval == ERROR_OK)
 642                 {
 643                         /* It wasn't a low level OpenOCD command that failed */
 644                         return ERROR_FAIL;
 645                 }
 646                 return retval;
 647         } else if (retcode == JIM_EXIT) {
 648                 /* ignore. */
 649                 /* exit(Jim_GetExitCode(interp)); */
 650         } else {
 651                 const char *result;
 652                 int reslen;
 653
 654                 result = Jim_GetString(Jim_GetResult(interp), &reslen);
 655                 if (reslen > 0)
 656                 {
 657                         int i;
 658                         char buff[256 + 1];
 659                         for (i = 0; i < reslen; i += 256)
 660                         {
 661                                 int chunk;
 662                                 chunk = reslen - i;
 663                                 if (chunk > 256)
 664                                         chunk = 256;
 665                                 strncpy(buff, result + i, chunk);
 666                                 buff[chunk] = 0;
 667                                 LOG_USER_N("%s", buff);
 668                         }
 669                         LOG_USER_N("%s", "\n");
 670                 }
 671                 retval = ERROR_OK;
 672         }
 673         return retval;
 674 }
 675
 676 int command_run_linef(struct command_context *context, const char *format, ...)
 677 {
 678         int retval = ERROR_FAIL;
 679         char *string;
 680         va_list ap;
 681         va_start(ap, format);
 682         string = alloc_vprintf(format, ap);
 683         if (string != NULL)
 684         {
 685                 retval = command_run_line(context, string);
 686         }
 687         va_end(ap);
 688         return retval;
 689 }
 690
 691 void command_set_output_handler(struct command_context* context,
 692                 command_output_handler_t output_handler, void *priv)
 693 {
 694         context->output_handler = output_handler;
 695         context->output_handler_priv = priv;
 696 }
 697
 698 struct command_context* copy_command_context(struct command_context* context)
 699 {
 700         struct command_context* copy_context = malloc(sizeof(struct command_context));
 701
 702         *copy_context = *context;
 703
 704         return copy_context;
 705 }
 706
 707 void command_done(struct command_context *cmd_ctx)
 708 {
 709         if (NULL == cmd_ctx)
 710                 return;
 711
 712         free(cmd_ctx);
 713 }
 714
 715 /* find full path to file */
 716 static int jim_find(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 717 {
 718         if (argc != 2)
 719                 return JIM_ERR;
 720         const char *file = Jim_GetString(argv[1], NULL);
 721         char *full_path = find_file(file);
 722         if (full_path == NULL)
 723                 return JIM_ERR;
 724         Jim_Obj *result = Jim_NewStringObj(interp, full_path, strlen(full_path));
 725         free(full_path);
 726
 727         Jim_SetResult(interp, result);
 728         return JIM_OK;
 729 }
 730
 731 static int jim_echo(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 732 {
 733         if (argc != 2)
 734                 return JIM_ERR;
 735         const char *str = Jim_GetString(argv[1], NULL);
 736         LOG_USER("%s", str);
 737         return JIM_OK;
 738 }
 739
 740 static size_t openocd_jim_fwrite(const void *_ptr, size_t size, size_t n, void *cookie)
 741 {
 742         size_t nbytes;
 743         const char *ptr;
 744         Jim_Interp *interp;
 745
 746         /* make it a char easier to read code */
 747         ptr = _ptr;
 748         interp = cookie;
 749         nbytes = size * n;
 750         if (ptr == NULL || interp == NULL || nbytes == 0) {
 751                 return 0;
 752         }
 753
 754         /* do we have to chunk it? */
 755         if (ptr[nbytes] == 0)
 756         {
 757                 /* no it is a C style string */
 758                 LOG_USER_N("%s", ptr);
 759                 return strlen(ptr);
 760         }
 761         /* GRR we must chunk - not null terminated */
 762         while (nbytes) {
 763                 char chunk[128 + 1];
 764                 int x;
 765
 766                 x = nbytes;
 767                 if (x > 128) {
 768                         x = 128;
 769                 }
 770                 /* copy it */
 771                 memcpy(chunk, ptr, x);
 772                 /* terminate it */
 773                 chunk[n] = 0;
 774                 /* output it */
 775                 LOG_USER_N("%s", chunk);
 776                 ptr += x;
 777                 nbytes -= x;
 778         }
 779
 780         return n;
 781 }
 782
 783 static size_t openocd_jim_fread(void *ptr, size_t size, size_t n, void *cookie)
 784 {
 785         /* TCL wants to read... tell him no */
 786         return 0;
 787 }
 788
 789 static int openocd_jim_vfprintf(void *cookie, const char *fmt, va_list ap)
 790 {
 791         char *cp;
 792         int n;
 793         Jim_Interp *interp;
 794
 795         n = -1;
 796         interp = cookie;
 797         if (interp == NULL)
 798                 return n;
 799
 800         cp = alloc_vprintf(fmt, ap);
 801         if (cp)
 802         {
 803                 LOG_USER_N("%s", cp);
 804                 n = strlen(cp);
 805                 free(cp);
 806         }
 807         return n;
 808 }
 809
 810 static int openocd_jim_fflush(void *cookie)
 811 {
 812         /* nothing to flush */
 813         return 0;
 814 }
 815
 816 static char* openocd_jim_fgets(char *s, int size, void *cookie)
 817 {
 818         /* not supported */
 819         errno = ENOTSUP;
 820         return NULL;
 821 }
 822
 823 static int jim_capture(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 824 {
 825         if (argc != 2)
 826                 return JIM_ERR;
 827
 828         struct log_capture_state *state = command_log_capture_start(interp);
 829
 830         const char *str = Jim_GetString(argv[1], NULL);
 831         int retcode = Jim_Eval_Named(interp, str, __THIS__FILE__, __LINE__);
 832
 833         command_log_capture_finish(state);
 834
 835         return retcode;
 836 }
 837
 838 static COMMAND_HELPER(command_help_find, struct command *head,
 839                 struct command **out)
 840 {
 841         if (0 == CMD_ARGC)
 842                 return ERROR_INVALID_ARGUMENTS;
 843         *out = command_find(head, CMD_ARGV[0]);
 844         if (NULL == *out && strncmp(CMD_ARGV[0], "ocd_", 4) == 0)
 845                 *out = command_find(head, CMD_ARGV[0] + 4);
 846         if (NULL == *out)
 847                 return ERROR_INVALID_ARGUMENTS;
 848         if (--CMD_ARGC == 0)
 849                 return ERROR_OK;
 850         CMD_ARGV++;
 851         return CALL_COMMAND_HANDLER(command_help_find, (*out)->children, out);
 852 }
 853
 854 static COMMAND_HELPER(command_help_show, struct command *c, unsigned n,
 855                 bool show_help);
 856
 857 static COMMAND_HELPER(command_help_show_list, struct command *head, unsigned n,
 858                 bool show_help)
 859 {
 860         for (struct command *c = head; NULL != c; c = c->next)
 861                 CALL_COMMAND_HANDLER(command_help_show, c, n, show_help);
 862         return ERROR_OK;
 863 }
 864
 865 #define HELP_LINE_WIDTH(_n) (int)(76 - (2 * _n))
 866
 867 static void command_help_show_indent(unsigned n)
 868 {
 869         for (unsigned i = 0; i < n; i++)
 870                 LOG_USER_N("  ");
 871 }
 872 static void command_help_show_wrap(const char *str, unsigned n, unsigned n2)
 873 {
 874         const char *cp = str, *last = str;
 875         while (*cp)
 876         {
 877                 const char *next = last;
 878                 do {
 879                         cp = next;
 880                         do {
 881                                 next++;
 882                         } while (*next != ' ' && *next != '\t' && *next != '\0');
 883                 } while ((next - last < HELP_LINE_WIDTH(n)) && *next != '\0');
 884                 if (next - last < HELP_LINE_WIDTH(n))
 885                         cp = next;
 886                 command_help_show_indent(n);
 887                 LOG_USER_N("%.*s", (int)(cp - last), last);
 888                 LOG_USER_N("\n");
 889                 last = cp + 1;
 890                 n = n2;
 891         }
 892 }
 893 static COMMAND_HELPER(command_help_show, struct command *c, unsigned n,
 894                 bool show_help)
 895 {
 896         if (!command_can_run(CMD_CTX, c))
 897                 return ERROR_OK;
 898
 899         char *cmd_name = command_name(c, ' ');
 900         if (NULL == cmd_name)
 901                 return -ENOMEM;
 902
 903         command_help_show_indent(n);
 904         LOG_USER_N("%s", cmd_name);
 905         free(cmd_name);
 906
 907         if (c->usage) {
 908                 LOG_USER_N(" ");
 909                 command_help_show_wrap(c->usage, 0, n + 5);
 910         }
 911         else
 912                 LOG_USER_N("\n");
 913
 914         if (show_help)
 915         {
 916                 const char *stage_msg;
 917                 switch (c->mode) {
 918                 case COMMAND_CONFIG: stage_msg = "CONFIG"; break;
 919                 case COMMAND_EXEC: stage_msg = "EXEC"; break;
 920                 case COMMAND_ANY: stage_msg = "CONFIG or EXEC"; break;
 921                 default: stage_msg = "***UNKNOWN***"; break;
 922                 }
 923                 char *msg = alloc_printf("%s%sValid Modes: %s",
 924                         c->help ? : "", c->help ? "  " : "", stage_msg);
 925                 if (NULL != msg)
 926                 {
 927                         command_help_show_wrap(msg, n + 3, n + 3);
 928                         free(msg);
 929                 } else
 930                         return -ENOMEM;
 931         }
 932
 933         if (++n >= 2)
 934                 return ERROR_OK;
 935
 936         return CALL_COMMAND_HANDLER(command_help_show_list,
 937                         c->children, n, show_help);
 938 }
 939 COMMAND_HANDLER(handle_help_command)
 940 {
 941         bool full = strcmp(CMD_NAME, "help") == 0;
 942
 943         struct command *c = CMD_CTX->commands;
 944
 945         if (0 == CMD_ARGC)
 946                 return CALL_COMMAND_HANDLER(command_help_show_list, c, 0, full);
 947
 948         int retval = CALL_COMMAND_HANDLER(command_help_find, c, &c);
 949         if (ERROR_OK != retval)
 950                 return retval;
 951
 952         return CALL_COMMAND_HANDLER(command_help_show, c, 0, full);
 953 }
 954
 955 static int command_unknown_find(unsigned argc, Jim_Obj *const *argv,
 956                 struct command *head, struct command **out, bool top_level)
 957 {
 958         if (0 == argc)
 959                 return argc;
 960         const char *cmd_name = Jim_GetString(argv[0], NULL);
 961         struct command *c = command_find(head, cmd_name);
 962         if (NULL == c && top_level && strncmp(cmd_name, "ocd_", 4) == 0)
 963                 c = command_find(head, cmd_name + 4);
 964         if (NULL == c)
 965                 return argc;
 966         *out = c;
 967         return command_unknown_find(--argc, ++argv, (*out)->children, out, false);
 968 }
 969
 970 static int command_unknown(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 971 {
 972         const char *cmd_name = Jim_GetString(argv[0], NULL);
 973         if (strcmp(cmd_name, "unknown") == 0)
 974         {
 975                 if (argc == 1)
 976                         return JIM_OK;
 977                 argc--;
 978                 argv++;
 979         }
 980         script_debug(interp, cmd_name, argc, argv);
 981
 982         struct command_context *cmd_ctx = current_command_context(interp);
 983         struct command *c = cmd_ctx->commands;
 984         int remaining = command_unknown_find(argc, argv, c, &c, true);
 985         // if nothing could be consumed, then it's really an unknown command
 986         if (remaining == argc)
 987         {
 988                 const char *cmd = Jim_GetString(argv[0], NULL);
 989                 LOG_ERROR("Unknown command:\n  %s", cmd);
 990                 return JIM_OK;
 991         }
 992
 993         bool found = true;
 994         Jim_Obj *const *start;
 995         unsigned count;
 996         if (c->handler || c->jim_handler)
 997         {
 998                 // include the command name in the list
 999                 count = remaining + 1;
1000                 start = argv + (argc - remaining - 1);
1001         }
1002         else
1003         {
1004                 c = command_find(cmd_ctx->commands, "usage");
1005                 if (NULL == c)
1006                 {
1007                         LOG_ERROR("unknown command, but usage is missing too");
1008                         return JIM_ERR;
1009                 }
1010                 count = argc - remaining;
1011                 start = argv;
1012                 found = false;
1013         }
1014         // pass the command through to the intended handler
1015         if (c->jim_handler)
1016         {
1017                 interp->cmdPrivData = c->jim_handler_data;
1018                 return (*c->jim_handler)(interp, count, start);
1019         }
1020
1021         return script_command_run(interp, count, start, c, found);
1022 }
1023
1024 static int jim_command_mode(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
1025 {
1026         struct command_context *cmd_ctx = current_command_context(interp);
1027         enum command_mode mode;
1028         if (argc > 1)
1029         {
1030                 struct command *c = cmd_ctx->commands;
1031                 int remaining = command_unknown_find(argc - 1, argv + 1, c, &c, true);
1032                 // if nothing could be consumed, then it's an unknown command
1033                 if (remaining == argc - 1)
1034                 {
1035                         Jim_SetResultString(interp, "unknown", -1);
1036                         return JIM_OK;
1037                 }
1038                 mode = c->mode;
1039         }
1040         else
1041                 mode = cmd_ctx->mode;
1042
1043         const char *mode_str;
1044         switch (mode) {
1045         case COMMAND_ANY: mode_str = "any"; break;
1046         case COMMAND_CONFIG: mode_str = "config"; break;
1047         case COMMAND_EXEC: mode_str = "exec"; break;
1048         default: mode_str = "unknown"; break;
1049         }
1050         Jim_SetResultString(interp, mode_str, -1);
1051         return JIM_OK;
1052 }
1053
1054 static int jim_command_type(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
1055 {
1056         if (1 == argc)
1057                 return JIM_ERR;
1058
1059         struct command_context *cmd_ctx = current_command_context(interp);
1060         struct command *c = cmd_ctx->commands;
1061         int remaining = command_unknown_find(argc - 1, argv + 1, c, &c, true);
1062         // if nothing could be consumed, then it's an unknown command
1063         if (remaining == argc - 1)
1064         {
1065                 Jim_SetResultString(interp, "unknown", -1);
1066                 return JIM_OK;
1067         }
1068
1069         if (c->jim_handler)
1070                 Jim_SetResultString(interp, "native", -1);
1071         else if (c->handler)
1072                 Jim_SetResultString(interp, "simple", -1);
1073         else
1074                 Jim_SetResultString(interp, "group", -1);
1075
1076         return JIM_OK;
1077 }
1078
1079 int help_add_command(struct command_context *cmd_ctx, struct command *parent,
1080                 const char *cmd_name, const char *help_text, const char *usage)
1081 {
1082         struct command **head = command_list_for_parent(cmd_ctx, parent);
1083         struct command *nc = command_find(*head, cmd_name);
1084         if (NULL == nc)
1085         {
1086                 // add a new command with help text
1087                 struct command_registration cr = {
1088                                 .name = cmd_name,
1089                                 .mode = COMMAND_ANY,
1090                                 .help = help_text,
1091                                 .usage = usage,
1092                         };
1093                 nc = register_command(cmd_ctx, parent, &cr);
1094                 if (NULL == nc)
1095                 {
1096                         LOG_ERROR("failed to add '%s' help text", cmd_name);
1097                         return ERROR_FAIL;
1098                 }
1099                 LOG_DEBUG("added '%s' help text", cmd_name);
1100                 return ERROR_OK;
1101         }
1102         if (help_text)
1103         {
1104                 bool replaced = false;
1105                 if (nc->help)
1106                 {
1107                         free((void *)nc->help);
1108                         replaced = true;
1109                 }
1110                 nc->help = strdup(help_text);
1111                 if (replaced)
1112                         LOG_INFO("replaced existing '%s' help", cmd_name);
1113                 else
1114                         LOG_DEBUG("added '%s' help text", cmd_name);
1115         }
1116         if (usage)
1117         {
1118                 bool replaced = false;
1119                 if (nc->usage)
1120                 {
1121                         free((void *)nc->usage);
1122                         replaced = true;
1123                 }
1124                 nc->usage = strdup(usage);
1125                 if (replaced)
1126                         LOG_INFO("replaced existing '%s' usage", cmd_name);
1127                 else
1128                         LOG_DEBUG("added '%s' usage text", cmd_name);
1129         }
1130         return ERROR_OK;
1131 }
1132
1133 COMMAND_HANDLER(handle_help_add_command)
1134 {
1135         if (CMD_ARGC < 2)
1136         {
1137                 LOG_ERROR("%s: insufficient arguments", CMD_NAME);
1138                 return ERROR_INVALID_ARGUMENTS;
1139         }
1140
1141         // save help text and remove it from argument list
1142         const char *str = CMD_ARGV[--CMD_ARGC];
1143         const char *help = !strcmp(CMD_NAME, "add_help_text") ? str : NULL;
1144         const char *usage = !strcmp(CMD_NAME, "add_usage_text") ? str : NULL;
1145         if (!help && !usage)
1146         {
1147                 LOG_ERROR("command name '%s' is unknown", CMD_NAME);
1148                 return ERROR_INVALID_ARGUMENTS;
1149         }
1150         // likewise for the leaf command name
1151         const char *cmd_name = CMD_ARGV[--CMD_ARGC];
1152
1153         struct command *c = NULL;
1154         if (CMD_ARGC > 0)
1155         {
1156                 c = CMD_CTX->commands;
1157                 int retval = CALL_COMMAND_HANDLER(command_help_find, c, &c);
1158                 if (ERROR_OK != retval)
1159                         return retval;
1160         }
1161         return help_add_command(CMD_CTX, c, cmd_name, help, usage);
1162 }
1163
1164 /* sleep command sleeps for <n> miliseconds
1165  * this is useful in target startup scripts
1166  */
1167 COMMAND_HANDLER(handle_sleep_command)
1168 {
1169         bool busy = false;
1170         if (CMD_ARGC == 2)
1171         {
1172                 if (strcmp(CMD_ARGV[1], "busy") == 0)
1173                         busy = true;
1174                 else
1175                         return ERROR_COMMAND_SYNTAX_ERROR;
1176         }
1177         else if (CMD_ARGC < 1 || CMD_ARGC > 2)
1178                 return ERROR_COMMAND_SYNTAX_ERROR;
1179
1180         unsigned long duration = 0;
1181         int retval = parse_ulong(CMD_ARGV[0], &duration);
1182         if (ERROR_OK != retval)
1183                 return retval;
1184
1185         if (!busy)
1186         {
1187                 long long then = timeval_ms();
1188                 while (timeval_ms() - then < (long long)duration)
1189                 {
1190                         target_call_timer_callbacks_now();
1191                         usleep(1000);
1192                 }
1193         }
1194         else
1195                 busy_sleep(duration);
1196
1197         return ERROR_OK;
1198 }
1199
1200 static const struct command_registration command_subcommand_handlers[] = {
1201         {
1202                 .name = "mode",
1203                 .mode = COMMAND_ANY,
1204                 .jim_handler = &jim_command_mode,
1205                 .usage = "[<name> ...]",
1206                 .help = "Returns the command modes allowed by a  command:"
1207                         "'any', 'config', or 'exec'.  If no command is"
1208                         "specified, returns the current command mode.",
1209         },
1210         {
1211                 .name = "type",
1212                 .mode = COMMAND_ANY,
1213                 .jim_handler = &jim_command_type,
1214                 .usage = "<name> ...",
1215                 .help = "Returns the type of built-in command:"
1216                         "'native', 'simple', 'group', or 'unknown'",
1217         },
1218         COMMAND_REGISTRATION_DONE
1219 };
1220
1221 static const struct command_registration command_builtin_handlers[] = {
1222         {
1223                 .name = "add_help_text",
1224                 .handler = &handle_help_add_command,
1225                 .mode = COMMAND_ANY,
1226                 .help = "add new command help text",
1227                 .usage = "<command> [...] <help_text>]",
1228         },
1229         {
1230                 .name = "add_usage_text",
1231                 .handler = &handle_help_add_command,
1232                 .mode = COMMAND_ANY,
1233                 .help = "add new command usage text",
1234                 .usage = "<command> [...] <usage_text>]",
1235         },
1236         {
1237                 .name = "sleep",
1238                 .handler = &handle_sleep_command,
1239                 .mode = COMMAND_ANY,
1240                 .help = "sleep for n milliseconds.  "
1241                         "\"busy\" will busy wait",
1242                 .usage = "<n> [busy]",
1243         },
1244         {
1245                 .name = "help",
1246                 .handler = &handle_help_command,
1247                 .mode = COMMAND_ANY,
1248                 .help = "show full command help",
1249                 .usage = "[<command> ...]",
1250         },
1251         {
1252                 .name = "usage",
1253                 .handler = &handle_help_command,
1254                 .mode = COMMAND_ANY,
1255                 .help = "show basic command usage",
1256                 .usage = "[<command> ...]",
1257         },
1258         {
1259                 .name = "command",
1260                 .mode= COMMAND_ANY,
1261                 .help = "core command group (introspection)",
1262                 .chain = command_subcommand_handlers,
1263         },
1264         COMMAND_REGISTRATION_DONE
1265 };
1266
1267 struct command_context* command_init(const char *startup_tcl)
1268 {
1269         struct command_context* context = malloc(sizeof(struct command_context));
1270         const char *HostOs;
1271
1272         context->mode = COMMAND_EXEC;
1273         context->commands = NULL;
1274         context->current_target = 0;
1275         context->output_handler = NULL;
1276         context->output_handler_priv = NULL;
1277
1278 #if !BUILD_ECOSBOARD
1279         Jim_InitEmbedded();
1280         /* Create an interpreter */
1281         context->interp = Jim_CreateInterp();
1282         /* Add all the Jim core commands */
1283         Jim_RegisterCoreCommands(context->interp);
1284 #endif
1285
1286         Jim_Interp *interp = context->interp;
1287 #if defined(_MSC_VER)
1288         /* WinXX - is generic, the forward
1289          * looking problem is this:
1290          *
1291          *   "win32" or "win64"
1292          *
1293          * "winxx" is generic.
1294          */
1295         HostOs = "winxx";
1296 #elif defined(__linux__)
1297         HostOs = "linux";
1298 #elif defined(__DARWIN__)
1299         HostOs = "darwin";
1300 #elif defined(__CYGWIN__)
1301         HostOs = "cygwin";
1302 #elif defined(__MINGW32__)
1303         HostOs = "mingw32";
1304 #elif defined(__ECOS)
1305         HostOs = "ecos";
1306 #else
1307 #warn unrecognized host OS...
1308         HostOs = "other";
1309 #endif
1310         Jim_SetGlobalVariableStr(interp, "ocd_HOSTOS",
1311                         Jim_NewStringObj(interp, HostOs , strlen(HostOs)));
1312
1313         Jim_CreateCommand(interp, "ocd_find", jim_find, NULL, NULL);
1314         Jim_CreateCommand(interp, "echo", jim_echo, NULL, NULL);
1315         Jim_CreateCommand(interp, "capture", jim_capture, NULL, NULL);
1316
1317         /* Set Jim's STDIO */
1318         interp->cookie_stdin = interp;
1319         interp->cookie_stdout = interp;
1320         interp->cookie_stderr = interp;
1321         interp->cb_fwrite = openocd_jim_fwrite;
1322         interp->cb_fread = openocd_jim_fread ;
1323         interp->cb_vfprintf = openocd_jim_vfprintf;
1324         interp->cb_fflush = openocd_jim_fflush;
1325         interp->cb_fgets = openocd_jim_fgets;
1326
1327         register_commands(context, NULL, command_builtin_handlers);
1328
1329 #if !BUILD_ECOSBOARD
1330         Jim_EventLoopOnLoad(interp);
1331 #endif
1332         Jim_SetAssocData(interp, "context", NULL, context);
1333         if (Jim_Eval_Named(interp, startup_tcl, "embedded:startup.tcl",1) == JIM_ERR)
1334         {
1335                 LOG_ERROR("Failed to run startup.tcl (embedded into OpenOCD)");
1336                 Jim_PrintErrorMessage(interp);
1337                 exit(-1);
1338         }
1339         Jim_DeleteAssocData(interp, "context");
1340
1341         return context;
1342 }
1343
1344 int command_context_mode(struct command_context *cmd_ctx, enum command_mode mode)
1345 {
1346         if (!cmd_ctx)
1347                 return ERROR_INVALID_ARGUMENTS;
1348
1349         cmd_ctx->mode = mode;
1350         return ERROR_OK;
1351 }
1352
1353 void process_jim_events(struct command_context *cmd_ctx)
1354 {
1355 #if !BUILD_ECOSBOARD
1356         static int recursion = 0;
1357         if (recursion)
1358                 return;
1359
1360         recursion++;
1361         Jim_ProcessEvents(cmd_ctx->interp, JIM_ALL_EVENTS | JIM_DONT_WAIT);
1362         recursion--;
1363 #endif
1364 }
1365
1366 #define DEFINE_PARSE_NUM_TYPE(name, type, func, min, max) \
1367         int parse##name(const char *str, type *ul) \
1368         { \
1369                 if (!*str) \
1370                 { \
1371                         LOG_ERROR("Invalid command argument"); \
1372                         return ERROR_COMMAND_ARGUMENT_INVALID; \
1373                 } \
1374                 char *end; \
1375                 *ul = func(str, &end, 0); \
1376                 if (*end) \
1377                 { \
1378                         LOG_ERROR("Invalid command argument"); \
1379                         return ERROR_COMMAND_ARGUMENT_INVALID; \
1380                 } \
1381                 if ((max == *ul) && (ERANGE == errno)) \
1382                 { \
1383                         LOG_ERROR("Argument overflow"); \
1384                         return ERROR_COMMAND_ARGUMENT_OVERFLOW; \
1385                 } \
1386                 if (min && (min == *ul) && (ERANGE == errno)) \
1387                 { \
1388                         LOG_ERROR("Argument underflow"); \
1389                         return ERROR_COMMAND_ARGUMENT_UNDERFLOW; \
1390                 } \
1391                 return ERROR_OK; \
1392         }
1393 DEFINE_PARSE_NUM_TYPE(_ulong, unsigned long , strtoul, 0, ULONG_MAX)
1394 DEFINE_PARSE_NUM_TYPE(_ullong, unsigned long long, strtoull, 0, ULLONG_MAX)
1395 DEFINE_PARSE_NUM_TYPE(_long, long , strtol, LONG_MIN, LONG_MAX)
1396 DEFINE_PARSE_NUM_TYPE(_llong, long long, strtoll, LLONG_MIN, LLONG_MAX)
1397
1398 #define DEFINE_PARSE_WRAPPER(name, type, min, max, functype, funcname) \
1399         int parse##name(const char *str, type *ul) \
1400         { \
1401                 functype n; \
1402                 int retval = parse##funcname(str, &n); \
1403                 if (ERROR_OK != retval) \
1404                         return retval; \
1405                 if (n > max) \
1406                         return ERROR_COMMAND_ARGUMENT_OVERFLOW; \
1407                 if (min) \
1408                         return ERROR_COMMAND_ARGUMENT_UNDERFLOW; \
1409                 *ul = n; \
1410                 return ERROR_OK; \
1411         }
1412
1413 #define DEFINE_PARSE_ULONG(name, type, min, max) \
1414         DEFINE_PARSE_WRAPPER(name, type, min, max, unsigned long, _ulong)
1415 DEFINE_PARSE_ULONG(_uint, unsigned, 0, UINT_MAX)
1416 DEFINE_PARSE_ULONG(_u32, uint32_t, 0, UINT32_MAX)
1417 DEFINE_PARSE_ULONG(_u16, uint16_t, 0, UINT16_MAX)
1418 DEFINE_PARSE_ULONG(_u8, uint8_t, 0, UINT8_MAX)
1419
1420 #define DEFINE_PARSE_LONG(name, type, min, max) \
1421         DEFINE_PARSE_WRAPPER(name, type, min, max, long, _long)
1422 DEFINE_PARSE_LONG(_int, int, n < INT_MIN, INT_MAX)
1423 DEFINE_PARSE_LONG(_s32, int32_t, n < INT32_MIN, INT32_MAX)
1424 DEFINE_PARSE_LONG(_s16, int16_t, n < INT16_MIN, INT16_MAX)
1425 DEFINE_PARSE_LONG(_s8, int8_t, n < INT8_MIN, INT8_MAX)
1426
1427 static int command_parse_bool(const char *in, bool *out,
1428                 const char *on, const char *off)
1429 {
1430         if (strcasecmp(in, on) == 0)
1431                 *out = true;
1432         else if (strcasecmp(in, off) == 0)
1433                 *out = false;
1434         else
1435                 return ERROR_COMMAND_SYNTAX_ERROR;
1436         return  ERROR_OK;
1437 }
1438
1439 int command_parse_bool_arg(const char *in, bool *out)
1440 {
1441         if (command_parse_bool(in, out, "on", "off") == ERROR_OK)
1442                 return ERROR_OK;
1443         if (command_parse_bool(in, out, "enable", "disable") == ERROR_OK)
1444                 return ERROR_OK;
1445         if (command_parse_bool(in, out, "true", "false") == ERROR_OK)
1446                 return ERROR_OK;
1447         if (command_parse_bool(in, out, "yes", "no") == ERROR_OK)
1448                 return ERROR_OK;
1449         if (command_parse_bool(in, out, "1", "0") == ERROR_OK)
1450                 return ERROR_OK;
1451         return ERROR_INVALID_ARGUMENTS;
1452 }
1453
1454 COMMAND_HELPER(handle_command_parse_bool, bool *out, const char *label)
1455 {
1456         switch (CMD_ARGC) {
1457         case 1: {
1458                 const char *in = CMD_ARGV[0];
1459                 if (command_parse_bool_arg(in, out) != ERROR_OK)
1460                 {
1461                         LOG_ERROR("%s: argument '%s' is not valid", CMD_NAME, in);
1462                         return ERROR_INVALID_ARGUMENTS;
1463                 }
1464                 // fall through
1465         }
1466         case 0:
1467                 LOG_INFO("%s is %s", label, *out ? "enabled" : "disabled");
1468                 break;
1469         default:
1470                 return ERROR_INVALID_ARGUMENTS;
1471         }
1472         return ERROR_OK;
1473 }