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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, see <http://www.gnu.org/licenses/>. *
  26  ***************************************************************************/
  27
  28 #ifdef HAVE_CONFIG_H
  29 #include "config.h"
  30 #endif
  31
  32 /* see Embedded-HOWTO.txt in Jim Tcl project hosted on BerliOS*/
  33 #define JIM_EMBEDDED
  34
  35 /* @todo the inclusion of target.h here is a layering violation */
  36 #include <jtag/jtag.h>
  37 #include <target/target.h>
  38 #include "command.h"
  39 #include "configuration.h"
  40 #include "log.h"
  41 #include "time_support.h"
  42 #include "jim-eventloop.h"
  43
  44 /* nice short description of source file */
  45 #define __THIS__FILE__ "command.c"
  46
  47 static int run_command(struct command_context *context,
  48                 struct command *c, const char *words[], unsigned num_words);
  49
  50 struct log_capture_state {
  51         Jim_Interp *interp;
  52         Jim_Obj *output;
  53 };
  54
  55 static void tcl_output(void *privData, const char *file, unsigned line,
  56         const char *function, const char *string)
  57 {
  58         struct log_capture_state *state = privData;
  59         Jim_AppendString(state->interp, state->output, string, strlen(string));
  60 }
  61
  62 static struct log_capture_state *command_log_capture_start(Jim_Interp *interp)
  63 {
  64         /* capture log output and return it. A garbage collect can
  65          * happen, so we need a reference count to this object */
  66         Jim_Obj *tclOutput = Jim_NewStringObj(interp, "", 0);
  67         if (NULL == tclOutput)
  68                 return NULL;
  69
  70         struct log_capture_state *state = malloc(sizeof(*state));
  71         if (NULL == state)
  72                 return NULL;
  73
  74         state->interp = interp;
  75         Jim_IncrRefCount(tclOutput);
  76         state->output = tclOutput;
  77
  78         log_add_callback(tcl_output, state);
  79
  80         return state;
  81 }
  82
  83 /* Classic openocd commands provide progress output which we
  84  * will capture and return as a Tcl return value.
  85  *
  86  * However, if a non-openocd command has been invoked, then it
  87  * makes sense to return the tcl return value from that command.
  88  *
  89  * The tcl return value is empty for openocd commands that provide
  90  * progress output.
  91  *
  92  * Therefore we set the tcl return value only if we actually
  93  * captured output.
  94  */
  95 static void command_log_capture_finish(struct log_capture_state *state)
  96 {
  97         if (NULL == state)
  98                 return;
  99
 100         log_remove_callback(tcl_output, state);
 101
 102         int length;
 103         Jim_GetString(state->output, &length);
 104
 105         if (length > 0)
 106                 Jim_SetResult(state->interp, state->output);
 107         else {
 108                 /* No output captured, use tcl return value (which could
 109                  * be empty too). */
 110         }
 111         Jim_DecrRefCount(state->interp, state->output);
 112
 113         free(state);
 114 }
 115
 116 static int command_retval_set(Jim_Interp *interp, int retval)
 117 {
 118         int *return_retval = Jim_GetAssocData(interp, "retval");
 119         if (return_retval != NULL)
 120                 *return_retval = retval;
 121
 122         return (retval == ERROR_OK) ? JIM_OK : retval;
 123 }
 124
 125 extern struct command_context *global_cmd_ctx;
 126
 127 /* dump a single line to the log for the command.
 128  * Do nothing in case we are not at debug level 3 */
 129 void script_debug(Jim_Interp *interp, const char *name,
 130         unsigned argc, Jim_Obj * const *argv)
 131 {
 132         if (debug_level < LOG_LVL_DEBUG)
 133                 return;
 134
 135         char *dbg = alloc_printf("command - %s", name);
 136         for (unsigned i = 0; i < argc; i++) {
 137                 int len;
 138                 const char *w = Jim_GetString(argv[i], &len);
 139                 char *t = alloc_printf("%s %s", dbg, w);
 140                 free(dbg);
 141                 dbg = t;
 142         }
 143         LOG_DEBUG("%s", dbg);
 144         free(dbg);
 145 }
 146
 147 static void script_command_args_free(char **words, unsigned nwords)
 148 {
 149         for (unsigned i = 0; i < nwords; i++)
 150                 free(words[i]);
 151         free(words);
 152 }
 153
 154 static char **script_command_args_alloc(
 155         unsigned argc, Jim_Obj * const *argv, unsigned *nwords)
 156 {
 157         char **words = malloc(argc * sizeof(char *));
 158         if (NULL == words)
 159                 return NULL;
 160
 161         unsigned i;
 162         for (i = 0; i < argc; i++) {
 163                 int len;
 164                 const char *w = Jim_GetString(argv[i], &len);
 165                 words[i] = strdup(w);
 166                 if (words[i] == NULL) {
 167                         script_command_args_free(words, i);
 168                         return NULL;
 169                 }
 170         }
 171         *nwords = i;
 172         return words;
 173 }
 174
 175 struct command_context *current_command_context(Jim_Interp *interp)
 176 {
 177         /* grab the command context from the associated data */
 178         struct command_context *cmd_ctx = Jim_GetAssocData(interp, "context");
 179         if (NULL == cmd_ctx) {
 180                 /* Tcl can invoke commands directly instead of via command_run_line(). This would
 181                  * happen when the Jim Tcl interpreter is provided by eCos or if we are running
 182                  * commands in a startup script.
 183                  *
 184                  * A telnet or gdb server would provide a non-default command context to
 185                  * handle piping of error output, have a separate current target, etc.
 186                  */
 187                 cmd_ctx = global_cmd_ctx;
 188         }
 189         return cmd_ctx;
 190 }
 191
 192 static int script_command_run(Jim_Interp *interp,
 193         int argc, Jim_Obj * const *argv, struct command *c, bool capture)
 194 {
 195         target_call_timer_callbacks_now();
 196         LOG_USER_N("%s", "");   /* Keep GDB connection alive*/
 197
 198         unsigned nwords;
 199         char **words = script_command_args_alloc(argc, argv, &nwords);
 200         if (NULL == words)
 201                 return JIM_ERR;
 202
 203         struct log_capture_state *state = NULL;
 204         if (capture)
 205                 state = command_log_capture_start(interp);
 206
 207         struct command_context *cmd_ctx = current_command_context(interp);
 208         int retval = run_command(cmd_ctx, c, (const char **)words, nwords);
 209
 210         command_log_capture_finish(state);
 211
 212         script_command_args_free(words, nwords);
 213         return command_retval_set(interp, retval);
 214 }
 215
 216 static int script_command(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 217 {
 218         /* the private data is stashed in the interp structure */
 219
 220         struct command *c = interp->cmdPrivData;
 221         assert(c);
 222         script_debug(interp, c->name, argc, argv);
 223         return script_command_run(interp, argc, argv, c, true);
 224 }
 225
 226 static struct command *command_root(struct command *c)
 227 {
 228         while (NULL != c->parent)
 229                 c = c->parent;
 230         return c;
 231 }
 232
 233 /**
 234  * Find a command by name from a list of commands.
 235  * @returns Returns the named command if it exists in the list.
 236  * Returns NULL otherwise.
 237  */
 238 static struct command *command_find(struct command *head, const char *name)
 239 {
 240         for (struct command *cc = head; cc; cc = cc->next) {
 241                 if (strcmp(cc->name, name) == 0)
 242                         return cc;
 243         }
 244         return NULL;
 245 }
 246
 247 struct command *command_find_in_context(struct command_context *cmd_ctx,
 248         const char *name)
 249 {
 250         return command_find(cmd_ctx->commands, name);
 251 }
 252 struct command *command_find_in_parent(struct command *parent,
 253         const char *name)
 254 {
 255         return command_find(parent->children, name);
 256 }
 257
 258 /**
 259  * Add the command into the linked list, sorted by name.
 260  * @param head Address to head of command list pointer, which may be
 261  * updated if @c c gets inserted at the beginning of the list.
 262  * @param c The command to add to the list pointed to by @c head.
 263  */
 264 static void command_add_child(struct command **head, struct command *c)
 265 {
 266         assert(head);
 267         if (NULL == *head) {
 268                 *head = c;
 269                 return;
 270         }
 271
 272         while ((*head)->next && (strcmp(c->name, (*head)->name) > 0))
 273                 head = &(*head)->next;
 274
 275         if (strcmp(c->name, (*head)->name) > 0) {
 276                 c->next = (*head)->next;
 277                 (*head)->next = c;
 278         } else {
 279                 c->next = *head;
 280                 *head = c;
 281         }
 282 }
 283
 284 static struct command **command_list_for_parent(
 285         struct command_context *cmd_ctx, struct command *parent)
 286 {
 287         return parent ? &parent->children : &cmd_ctx->commands;
 288 }
 289
 290 static void command_free(struct command *c)
 291 {
 292         /** @todo if command has a handler, unregister its jim command! */
 293
 294         while (NULL != c->children) {
 295                 struct command *tmp = c->children;
 296                 c->children = tmp->next;
 297                 command_free(tmp);
 298         }
 299
 300         free(c->name);
 301         free(c->help);
 302         free(c->usage);
 303         free(c);
 304 }
 305
 306 static struct command *command_new(struct command_context *cmd_ctx,
 307         struct command *parent, const struct command_registration *cr)
 308 {
 309         assert(cr->name);
 310
 311         /*
 312          * If it is a non-jim command with no .usage specified,
 313          * log an error.
 314          *
 315          * strlen(.usage) == 0 means that the command takes no
 316          * arguments.
 317         */
 318         if ((cr->jim_handler == NULL) && (cr->usage == NULL)) {
 319                 LOG_ERROR("BUG: command '%s%s%s' does not have the "
 320                         "'.usage' field filled out",
 321                         parent && parent->name ? parent->name : "",
 322                         parent && parent->name ? " " : "",
 323                         cr->name);
 324         }
 325
 326         struct command *c = calloc(1, sizeof(struct command));
 327         if (NULL == c)
 328                 return NULL;
 329
 330         c->name = strdup(cr->name);
 331         if (cr->help)
 332                 c->help = strdup(cr->help);
 333         if (cr->usage)
 334                 c->usage = strdup(cr->usage);
 335
 336         if (!c->name || (cr->help && !c->help) || (cr->usage && !c->usage))
 337                 goto command_new_error;
 338
 339         c->parent = parent;
 340         c->handler = cr->handler;
 341         c->jim_handler = cr->jim_handler;
 342         c->jim_handler_data = cr->jim_handler_data;
 343         c->mode = cr->mode;
 344
 345         command_add_child(command_list_for_parent(cmd_ctx, parent), c);
 346
 347         return c;
 348
 349 command_new_error:
 350         command_free(c);
 351         return NULL;
 352 }
 353
 354 static int command_unknown(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
 355
 356 static int register_command_handler(struct command_context *cmd_ctx,
 357         struct command *c)
 358 {
 359         Jim_Interp *interp = cmd_ctx->interp;
 360         char *ocd_name = alloc_printf("ocd_%s", c->name);
 361         if (NULL == ocd_name)
 362                 return JIM_ERR;
 363
 364         LOG_DEBUG("registering '%s'...", ocd_name);
 365
 366         Jim_CmdProc *func = c->handler ? &script_command : &command_unknown;
 367         int retval = Jim_CreateCommand(interp, ocd_name, func, c, NULL);
 368         free(ocd_name);
 369         if (JIM_OK != retval)
 370                 return retval;
 371
 372         /* we now need to add an overrideable proc */
 373         char *override_name = alloc_printf(
 374                         "proc %s {args} {eval ocd_bouncer %s $args}",
 375                         c->name, c->name);
 376         if (NULL == override_name)
 377                 return JIM_ERR;
 378
 379         retval = Jim_Eval_Named(interp, override_name, 0, 0);
 380         free(override_name);
 381
 382         return retval;
 383 }
 384
 385 struct command *register_command(struct command_context *context,
 386         struct command *parent, const struct command_registration *cr)
 387 {
 388         if (!context || !cr->name)
 389                 return NULL;
 390
 391         const char *name = cr->name;
 392         struct command **head = command_list_for_parent(context, parent);
 393         struct command *c = command_find(*head, name);
 394         if (NULL != c) {
 395                 /* TODO: originally we treated attempting to register a cmd twice as an error
 396                  * Sometimes we need this behaviour, such as with flash banks.
 397                  * http://www.mail-archive.com/openocd-development@lists.berlios.de/msg11152.html */
 398                 LOG_DEBUG("command '%s' is already registered in '%s' context",
 399                         name, parent ? parent->name : "<global>");
 400                 return c;
 401         }
 402
 403         c = command_new(context, parent, cr);
 404         if (NULL == c)
 405                 return NULL;
 406
 407         int retval = ERROR_OK;
 408         if (NULL != cr->jim_handler && NULL == parent) {
 409                 retval = Jim_CreateCommand(context->interp, cr->name,
 410                                 cr->jim_handler, cr->jim_handler_data, NULL);
 411         } else if (NULL != cr->handler || NULL != parent)
 412                 retval = register_command_handler(context, command_root(c));
 413
 414         if (ERROR_OK != retval) {
 415                 unregister_command(context, parent, name);
 416                 c = NULL;
 417         }
 418         return c;
 419 }
 420
 421 int register_commands(struct command_context *cmd_ctx, struct command *parent,
 422         const struct command_registration *cmds)
 423 {
 424         int retval = ERROR_OK;
 425         unsigned i;
 426         for (i = 0; cmds[i].name || cmds[i].chain; i++) {
 427                 const struct command_registration *cr = cmds + i;
 428
 429                 struct command *c = NULL;
 430                 if (NULL != cr->name) {
 431                         c = register_command(cmd_ctx, parent, cr);
 432                         if (NULL == c) {
 433                                 retval = ERROR_FAIL;
 434                                 break;
 435                         }
 436                 }
 437                 if (NULL != cr->chain) {
 438                         struct command *p = c ? : parent;
 439                         retval = register_commands(cmd_ctx, p, cr->chain);
 440                         if (ERROR_OK != retval)
 441                                 break;
 442                 }
 443         }
 444         if (ERROR_OK != retval) {
 445                 for (unsigned j = 0; j < i; j++)
 446                         unregister_command(cmd_ctx, parent, cmds[j].name);
 447         }
 448         return retval;
 449 }
 450
 451 int unregister_all_commands(struct command_context *context,
 452         struct command *parent)
 453 {
 454         if (context == NULL)
 455                 return ERROR_OK;
 456
 457         struct command **head = command_list_for_parent(context, parent);
 458         while (NULL != *head) {
 459                 struct command *tmp = *head;
 460                 *head = tmp->next;
 461                 command_free(tmp);
 462         }
 463
 464         return ERROR_OK;
 465 }
 466
 467 int unregister_command(struct command_context *context,
 468         struct command *parent, const char *name)
 469 {
 470         if ((!context) || (!name))
 471                 return ERROR_COMMAND_SYNTAX_ERROR;
 472
 473         struct command *p = NULL;
 474         struct command **head = command_list_for_parent(context, parent);
 475         for (struct command *c = *head; NULL != c; p = c, c = c->next) {
 476                 if (strcmp(name, c->name) != 0)
 477                         continue;
 478
 479                 if (p)
 480                         p->next = c->next;
 481                 else
 482                         *head = c->next;
 483
 484                 command_free(c);
 485                 return ERROR_OK;
 486         }
 487
 488         return ERROR_OK;
 489 }
 490
 491 void command_set_handler_data(struct command *c, void *p)
 492 {
 493         if (NULL != c->handler || NULL != c->jim_handler)
 494                 c->jim_handler_data = p;
 495         for (struct command *cc = c->children; NULL != cc; cc = cc->next)
 496                 command_set_handler_data(cc, p);
 497 }
 498
 499 void command_output_text(struct command_context *context, const char *data)
 500 {
 501         if (context && context->output_handler && data)
 502                 context->output_handler(context, data);
 503 }
 504
 505 void command_print_sameline(struct command_invocation *cmd, const char *format, ...)
 506 {
 507         char *string;
 508
 509         va_list ap;
 510         va_start(ap, format);
 511
 512         string = alloc_vprintf(format, ap);
 513         if (string != NULL && cmd) {
 514                 /* we want this collected in the log + we also want to pick it up as a tcl return
 515                  * value.
 516                  *
 517                  * The latter bit isn't precisely neat, but will do for now.
 518                  */
 519                 Jim_AppendString(cmd->ctx->interp, cmd->output, string, -1);
 520                 /* We already printed it above
 521                  * command_output_text(context, string); */
 522                 free(string);
 523         }
 524
 525         va_end(ap);
 526 }
 527
 528 void command_print(struct command_invocation *cmd, const char *format, ...)
 529 {
 530         char *string;
 531
 532         va_list ap;
 533         va_start(ap, format);
 534
 535         string = alloc_vprintf(format, ap);
 536         if (string != NULL && cmd) {
 537                 strcat(string, "\n");   /* alloc_vprintf guaranteed the buffer to be at least one
 538                                          *char longer */
 539                 /* we want this collected in the log + we also want to pick it up as a tcl return
 540                  * value.
 541                  *
 542                  * The latter bit isn't precisely neat, but will do for now.
 543                  */
 544                 Jim_AppendString(cmd->ctx->interp, cmd->output, string, -1);
 545                 /* We already printed it above
 546                  * command_output_text(context, string); */
 547                 free(string);
 548         }
 549
 550         va_end(ap);
 551 }
 552
 553 static char *__command_name(struct command *c, char delim, unsigned extra)
 554 {
 555         char *name;
 556         unsigned len = strlen(c->name);
 557         if (NULL == c->parent) {
 558                 /* allocate enough for the name, child names, and '\0' */
 559                 name = malloc(len + extra + 1);
 560                 if (!name) {
 561                         LOG_ERROR("Out of memory");
 562                         return NULL;
 563                 }
 564                 strcpy(name, c->name);
 565         } else {
 566                 /* parent's extra must include both the space and name */
 567                 name = __command_name(c->parent, delim, 1 + len + extra);
 568                 char dstr[2] = { delim, 0 };
 569                 strcat(name, dstr);
 570                 strcat(name, c->name);
 571         }
 572         return name;
 573 }
 574
 575 char *command_name(struct command *c, char delim)
 576 {
 577         return __command_name(c, delim, 0);
 578 }
 579
 580 static bool command_can_run(struct command_context *cmd_ctx, struct command *c)
 581 {
 582         if (c->mode == COMMAND_ANY || c->mode == cmd_ctx->mode)
 583                 return true;
 584
 585         /* Many commands may be run only before/after 'init' */
 586         const char *when;
 587         switch (c->mode) {
 588                 case COMMAND_CONFIG:
 589                         when = "before";
 590                         break;
 591                 case COMMAND_EXEC:
 592                         when = "after";
 593                         break;
 594                 /* handle the impossible with humor; it guarantees a bug report! */
 595                 default:
 596                         when = "if Cthulhu is summoned by";
 597                         break;
 598         }
 599         char *full_name = command_name(c, ' ');
 600         LOG_ERROR("The '%s' command must be used %s 'init'.",
 601                         full_name ? full_name : c->name, when);
 602         free(full_name);
 603         return false;
 604 }
 605
 606 static int run_command(struct command_context *context,
 607         struct command *c, const char *words[], unsigned num_words)
 608 {
 609         if (!command_can_run(context, c))
 610                 return ERROR_FAIL;
 611
 612         struct command_invocation cmd = {
 613                 .ctx = context,
 614                 .current = c,
 615                 .name = c->name,
 616                 .argc = num_words - 1,
 617                 .argv = words + 1,
 618         };
 619         /* Black magic of overridden current target:
 620          * If the command we are going to handle has a target prefix,
 621          * override the current target temporarily for the time
 622          * of processing the command.
 623          * current_target_override is used also for event handlers
 624          * therefore we prevent touching it if command has no prefix.
 625          * Previous override is saved and restored back to ensure
 626          * correct work when run_command() is re-entered. */
 627         struct target *saved_target_override = context->current_target_override;
 628         if (c->jim_handler_data)
 629                 context->current_target_override = c->jim_handler_data;
 630
 631         cmd.output = Jim_NewEmptyStringObj(context->interp);
 632         Jim_IncrRefCount(cmd.output);
 633
 634         int retval = c->handler(&cmd);
 635
 636         if (c->jim_handler_data)
 637                 context->current_target_override = saved_target_override;
 638
 639         if (retval == ERROR_COMMAND_SYNTAX_ERROR) {
 640                 /* Print help for command */
 641                 char *full_name = command_name(c, ' ');
 642                 if (NULL != full_name) {
 643                         command_run_linef(context, "usage %s", full_name);
 644                         free(full_name);
 645                 }
 646         } else if (retval == ERROR_COMMAND_CLOSE_CONNECTION) {
 647                 /* just fall through for a shutdown request */
 648         } else if (retval != ERROR_OK) {
 649                 /* we do not print out an error message because the command *should*
 650                  * have printed out an error
 651                  */
 652                 char *full_name = command_name(c, ' ');
 653                 LOG_DEBUG("Command '%s' failed with error code %d",
 654                                         full_name ? full_name : c->name, retval);
 655                 free(full_name);
 656         } else {
 657                 /* Use the command output as the Tcl result */
 658                 Jim_SetResult(context->interp, cmd.output);
 659         }
 660         Jim_DecrRefCount(context->interp, cmd.output);
 661
 662         return retval;
 663 }
 664
 665 int command_run_line(struct command_context *context, char *line)
 666 {
 667         /* all the parent commands have been registered with the interpreter
 668          * so, can just evaluate the line as a script and check for
 669          * results
 670          */
 671         /* run the line thru a script engine */
 672         int retval = ERROR_FAIL;
 673         int retcode;
 674         /* Beware! This code needs to be reentrant. It is also possible
 675          * for OpenOCD commands to be invoked directly from Tcl. This would
 676          * happen when the Jim Tcl interpreter is provided by eCos for
 677          * instance.
 678          */
 679         context->current_target_override = NULL;
 680
 681         Jim_Interp *interp = context->interp;
 682         Jim_DeleteAssocData(interp, "context");
 683         retcode = Jim_SetAssocData(interp, "context", NULL, context);
 684         if (retcode == JIM_OK) {
 685                 /* associated the return value */
 686                 Jim_DeleteAssocData(interp, "retval");
 687                 retcode = Jim_SetAssocData(interp, "retval", NULL, &retval);
 688                 if (retcode == JIM_OK) {
 689                         retcode = Jim_Eval_Named(interp, line, 0, 0);
 690
 691                         Jim_DeleteAssocData(interp, "retval");
 692                 }
 693                 Jim_DeleteAssocData(interp, "context");
 694         }
 695         if (retcode == JIM_OK) {
 696                 const char *result;
 697                 int reslen;
 698
 699                 result = Jim_GetString(Jim_GetResult(interp), &reslen);
 700                 if (reslen > 0) {
 701                         int i;
 702                         char buff[256 + 1];
 703                         for (i = 0; i < reslen; i += 256) {
 704                                 int chunk;
 705                                 chunk = reslen - i;
 706                                 if (chunk > 256)
 707                                         chunk = 256;
 708                                 strncpy(buff, result + i, chunk);
 709                                 buff[chunk] = 0;
 710                                 LOG_USER_N("%s", buff);
 711                         }
 712                         LOG_USER_N("\n");
 713                 }
 714                 retval = ERROR_OK;
 715         } else if (retcode == JIM_EXIT) {
 716                 /* ignore.
 717                  * exit(Jim_GetExitCode(interp)); */
 718         } else if (retcode == ERROR_COMMAND_CLOSE_CONNECTION) {
 719                 return retcode;
 720         } else {
 721                 Jim_MakeErrorMessage(interp);
 722                 LOG_USER("%s", Jim_GetString(Jim_GetResult(interp), NULL));
 723
 724                 if (retval == ERROR_OK) {
 725                         /* It wasn't a low level OpenOCD command that failed */
 726                         return ERROR_FAIL;
 727                 }
 728                 return retval;
 729         }
 730
 731         return retval;
 732 }
 733
 734 int command_run_linef(struct command_context *context, const char *format, ...)
 735 {
 736         int retval = ERROR_FAIL;
 737         char *string;
 738         va_list ap;
 739         va_start(ap, format);
 740         string = alloc_vprintf(format, ap);
 741         if (string != NULL) {
 742                 retval = command_run_line(context, string);
 743                 free(string);
 744         }
 745         va_end(ap);
 746         return retval;
 747 }
 748
 749 void command_set_output_handler(struct command_context *context,
 750         command_output_handler_t output_handler, void *priv)
 751 {
 752         context->output_handler = output_handler;
 753         context->output_handler_priv = priv;
 754 }
 755
 756 struct command_context *copy_command_context(struct command_context *context)
 757 {
 758         struct command_context *copy_context = malloc(sizeof(struct command_context));
 759
 760         *copy_context = *context;
 761
 762         return copy_context;
 763 }
 764
 765 void command_done(struct command_context *cmd_ctx)
 766 {
 767         if (NULL == cmd_ctx)
 768                 return;
 769
 770         free(cmd_ctx);
 771 }
 772
 773 /* find full path to file */
 774 static int jim_find(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 775 {
 776         if (argc != 2)
 777                 return JIM_ERR;
 778         const char *file = Jim_GetString(argv[1], NULL);
 779         char *full_path = find_file(file);
 780         if (full_path == NULL)
 781                 return JIM_ERR;
 782         Jim_Obj *result = Jim_NewStringObj(interp, full_path, strlen(full_path));
 783         free(full_path);
 784
 785         Jim_SetResult(interp, result);
 786         return JIM_OK;
 787 }
 788
 789 COMMAND_HANDLER(jim_echo)
 790 {
 791         if (CMD_ARGC == 2 && !strcmp(CMD_ARGV[0], "-n")) {
 792                 LOG_USER_N("%s", CMD_ARGV[1]);
 793                 return JIM_OK;
 794         }
 795         if (CMD_ARGC != 1)
 796                 return JIM_ERR;
 797         LOG_USER("%s", CMD_ARGV[0]);
 798         return JIM_OK;
 799 }
 800
 801 /* Capture progress output and return as tcl return value. If the
 802  * progress output was empty, return tcl return value.
 803  */
 804 static int jim_capture(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 805 {
 806         if (argc != 2)
 807                 return JIM_ERR;
 808
 809         struct log_capture_state *state = command_log_capture_start(interp);
 810
 811         /* disable polling during capture. This avoids capturing output
 812          * from polling.
 813          *
 814          * This is necessary in order to avoid accidentally getting a non-empty
 815          * string for tcl fn's.
 816          */
 817         bool save_poll = jtag_poll_get_enabled();
 818
 819         jtag_poll_set_enabled(false);
 820
 821         const char *str = Jim_GetString(argv[1], NULL);
 822         int retcode = Jim_Eval_Named(interp, str, __THIS__FILE__, __LINE__);
 823
 824         jtag_poll_set_enabled(save_poll);
 825
 826         command_log_capture_finish(state);
 827
 828         return retcode;
 829 }
 830
 831 static COMMAND_HELPER(command_help_find, struct command *head,
 832         struct command **out)
 833 {
 834         if (0 == CMD_ARGC)
 835                 return ERROR_COMMAND_SYNTAX_ERROR;
 836         *out = command_find(head, CMD_ARGV[0]);
 837         if (NULL == *out && strncmp(CMD_ARGV[0], "ocd_", 4) == 0)
 838                 *out = command_find(head, CMD_ARGV[0] + 4);
 839         if (NULL == *out)
 840                 return ERROR_COMMAND_SYNTAX_ERROR;
 841         if (--CMD_ARGC == 0)
 842                 return ERROR_OK;
 843         CMD_ARGV++;
 844         return CALL_COMMAND_HANDLER(command_help_find, (*out)->children, out);
 845 }
 846
 847 static COMMAND_HELPER(command_help_show, struct command *c, unsigned n,
 848         bool show_help, const char *cmd_match);
 849
 850 static COMMAND_HELPER(command_help_show_list, struct command *head, unsigned n,
 851         bool show_help, const char *cmd_match)
 852 {
 853         for (struct command *c = head; NULL != c; c = c->next)
 854                 CALL_COMMAND_HANDLER(command_help_show, c, n, show_help, cmd_match);
 855         return ERROR_OK;
 856 }
 857
 858 #define HELP_LINE_WIDTH(_n) (int)(76 - (2 * _n))
 859
 860 static void command_help_show_indent(unsigned n)
 861 {
 862         for (unsigned i = 0; i < n; i++)
 863                 LOG_USER_N("  ");
 864 }
 865 static void command_help_show_wrap(const char *str, unsigned n, unsigned n2)
 866 {
 867         const char *cp = str, *last = str;
 868         while (*cp) {
 869                 const char *next = last;
 870                 do {
 871                         cp = next;
 872                         do {
 873                                 next++;
 874                         } while (*next != ' ' && *next != '\t' && *next != '\0');
 875                 } while ((next - last < HELP_LINE_WIDTH(n)) && *next != '\0');
 876                 if (next - last < HELP_LINE_WIDTH(n))
 877                         cp = next;
 878                 command_help_show_indent(n);
 879                 LOG_USER("%.*s", (int)(cp - last), last);
 880                 last = cp + 1;
 881                 n = n2;
 882         }
 883 }
 884
 885 static COMMAND_HELPER(command_help_show, struct command *c, unsigned n,
 886         bool show_help, const char *cmd_match)
 887 {
 888         char *cmd_name = command_name(c, ' ');
 889         if (NULL == cmd_name)
 890                 return ERROR_FAIL;
 891
 892         /* If the match string occurs anywhere, we print out
 893          * stuff for this command. */
 894         bool is_match = (strstr(cmd_name, cmd_match) != NULL) ||
 895                 ((c->usage != NULL) && (strstr(c->usage, cmd_match) != NULL)) ||
 896                 ((c->help != NULL) && (strstr(c->help, cmd_match) != NULL));
 897
 898         if (is_match) {
 899                 command_help_show_indent(n);
 900                 LOG_USER_N("%s", cmd_name);
 901         }
 902         free(cmd_name);
 903
 904         if (is_match) {
 905                 if (c->usage && strlen(c->usage) > 0) {
 906                         LOG_USER_N(" ");
 907                         command_help_show_wrap(c->usage, 0, n + 5);
 908                 } else
 909                         LOG_USER_N("\n");
 910         }
 911
 912         if (is_match && show_help) {
 913                 char *msg;
 914
 915                 /* Normal commands are runtime-only; highlight exceptions */
 916                 if (c->mode != COMMAND_EXEC) {
 917                         const char *stage_msg = "";
 918
 919                         switch (c->mode) {
 920                                 case COMMAND_CONFIG:
 921                                         stage_msg = " (configuration command)";
 922                                         break;
 923                                 case COMMAND_ANY:
 924                                         stage_msg = " (command valid any time)";
 925                                         break;
 926                                 default:
 927                                         stage_msg = " (?mode error?)";
 928                                         break;
 929                         }
 930                         msg = alloc_printf("%s%s", c->help ? : "", stage_msg);
 931                 } else
 932                         msg = alloc_printf("%s", c->help ? : "");
 933
 934                 if (NULL != msg) {
 935                         command_help_show_wrap(msg, n + 3, n + 3);
 936                         free(msg);
 937                 } else
 938                         return -ENOMEM;
 939         }
 940
 941         if (++n > 5) {
 942                 LOG_ERROR("command recursion exceeded");
 943                 return ERROR_FAIL;
 944         }
 945
 946         return CALL_COMMAND_HANDLER(command_help_show_list,
 947                 c->children, n, show_help, cmd_match);
 948 }
 949
 950 COMMAND_HANDLER(handle_help_command)
 951 {
 952         bool full = strcmp(CMD_NAME, "help") == 0;
 953         int retval;
 954         struct command *c = CMD_CTX->commands;
 955         char *cmd_match = NULL;
 956
 957         if (CMD_ARGC == 0)
 958                 cmd_match = "";
 959         else if (CMD_ARGC >= 1) {
 960                 unsigned i;
 961
 962                 for (i = 0; i < CMD_ARGC; ++i) {
 963                         if (NULL != cmd_match) {
 964                                 char *prev = cmd_match;
 965
 966                                 cmd_match = alloc_printf("%s %s", cmd_match, CMD_ARGV[i]);
 967                                 free(prev);
 968                                 if (NULL == cmd_match) {
 969                                         LOG_ERROR("unable to build search string");
 970                                         return -ENOMEM;
 971                                 }
 972                         } else {
 973                                 cmd_match = alloc_printf("%s", CMD_ARGV[i]);
 974                                 if (NULL == cmd_match) {
 975                                         LOG_ERROR("unable to build search string");
 976                                         return -ENOMEM;
 977                                 }
 978                         }
 979                 }
 980         } else
 981                 return ERROR_COMMAND_SYNTAX_ERROR;
 982
 983         retval = CALL_COMMAND_HANDLER(command_help_show_list,
 984                         c, 0, full, cmd_match);
 985
 986         if (CMD_ARGC >= 1)
 987                 free(cmd_match);
 988         return retval;
 989 }
 990
 991 static int command_unknown_find(unsigned argc, Jim_Obj *const *argv,
 992         struct command *head, struct command **out, bool top_level)
 993 {
 994         if (0 == argc)
 995                 return argc;
 996         const char *cmd_name = Jim_GetString(argv[0], NULL);
 997         struct command *c = command_find(head, cmd_name);
 998         if (NULL == c && top_level && strncmp(cmd_name, "ocd_", 4) == 0)
 999                 c = command_find(head, cmd_name + 4);
1000         if (NULL == c)
1001                 return argc;
1002         *out = c;
1003         return command_unknown_find(--argc, ++argv, (*out)->children, out, false);
1004 }
1005
1006 static int command_unknown(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
1007 {
1008         const char *cmd_name = Jim_GetString(argv[0], NULL);
1009         if (strcmp(cmd_name, "unknown") == 0) {
1010                 if (argc == 1)
1011                         return JIM_OK;
1012                 argc--;
1013                 argv++;
1014         }
1015         script_debug(interp, cmd_name, argc, argv);
1016
1017         struct command_context *cmd_ctx = current_command_context(interp);
1018         struct command *c = cmd_ctx->commands;
1019         int remaining = command_unknown_find(argc, argv, c, &c, true);
1020         /* if nothing could be consumed, then it's really an unknown command */
1021         if (remaining == argc) {
1022                 const char *cmd = Jim_GetString(argv[0], NULL);
1023                 LOG_ERROR("Unknown command:\n  %s", cmd);
1024                 return JIM_OK;
1025         }
1026
1027         bool found = true;
1028         Jim_Obj *const *start;
1029         unsigned count;
1030         if (c->handler || c->jim_handler) {
1031                 /* include the command name in the list */
1032                 count = remaining + 1;
1033                 start = argv + (argc - remaining - 1);
1034         } else {
1035                 c = command_find(cmd_ctx->commands, "usage");
1036                 if (NULL == c) {
1037                         LOG_ERROR("unknown command, but usage is missing too");
1038                         return JIM_ERR;
1039                 }
1040                 count = argc - remaining;
1041                 start = argv;
1042                 found = false;
1043         }
1044         /* pass the command through to the intended handler */
1045         if (c->jim_handler) {
1046                 if (!command_can_run(cmd_ctx, c))
1047                         return JIM_ERR;
1048
1049                 interp->cmdPrivData = c->jim_handler_data;
1050                 return (*c->jim_handler)(interp, count, start);
1051         }
1052
1053         return script_command_run(interp, count, start, c, found);
1054 }
1055
1056 static int jim_command_mode(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
1057 {
1058         struct command_context *cmd_ctx = current_command_context(interp);
1059         enum command_mode mode;
1060
1061         if (argc > 1) {
1062                 struct command *c = cmd_ctx->commands;
1063                 int remaining = command_unknown_find(argc - 1, argv + 1, c, &c, true);
1064                 /* if nothing could be consumed, then it's an unknown command */
1065                 if (remaining == argc - 1) {
1066                         Jim_SetResultString(interp, "unknown", -1);
1067                         return JIM_OK;
1068                 }
1069                 mode = c->mode;
1070         } else
1071                 mode = cmd_ctx->mode;
1072
1073         const char *mode_str;
1074         switch (mode) {
1075                 case COMMAND_ANY:
1076                         mode_str = "any";
1077                         break;
1078                 case COMMAND_CONFIG:
1079                         mode_str = "config";
1080                         break;
1081                 case COMMAND_EXEC:
1082                         mode_str = "exec";
1083                         break;
1084                 default:
1085                         mode_str = "unknown";
1086                         break;
1087         }
1088         Jim_SetResultString(interp, mode_str, -1);
1089         return JIM_OK;
1090 }
1091
1092 static int jim_command_type(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
1093 {
1094         if (1 == argc)
1095                 return JIM_ERR;
1096
1097         struct command_context *cmd_ctx = current_command_context(interp);
1098         struct command *c = cmd_ctx->commands;
1099         int remaining = command_unknown_find(argc - 1, argv + 1, c, &c, true);
1100         /* if nothing could be consumed, then it's an unknown command */
1101         if (remaining == argc - 1) {
1102                 Jim_SetResultString(interp, "unknown", -1);
1103                 return JIM_OK;
1104         }
1105
1106         if (c->jim_handler)
1107                 Jim_SetResultString(interp, "native", -1);
1108         else if (c->handler)
1109                 Jim_SetResultString(interp, "simple", -1);
1110         else if (remaining == 0)
1111                 Jim_SetResultString(interp, "group", -1);
1112         else
1113                 Jim_SetResultString(interp, "unknown", -1);
1114
1115         return JIM_OK;
1116 }
1117
1118 int help_add_command(struct command_context *cmd_ctx, struct command *parent,
1119         const char *cmd_name, const char *help_text, const char *usage)
1120 {
1121         struct command **head = command_list_for_parent(cmd_ctx, parent);
1122         struct command *nc = command_find(*head, cmd_name);
1123         if (NULL == nc) {
1124                 /* add a new command with help text */
1125                 struct command_registration cr = {
1126                         .name = cmd_name,
1127                         .mode = COMMAND_ANY,
1128                         .help = help_text,
1129                         .usage = usage ? : "",
1130                 };
1131                 nc = register_command(cmd_ctx, parent, &cr);
1132                 if (NULL == nc) {
1133                         LOG_ERROR("failed to add '%s' help text", cmd_name);
1134                         return ERROR_FAIL;
1135                 }
1136                 LOG_DEBUG("added '%s' help text", cmd_name);
1137                 return ERROR_OK;
1138         }
1139         if (help_text) {
1140                 bool replaced = false;
1141                 if (nc->help) {
1142                         free(nc->help);
1143                         replaced = true;
1144                 }
1145                 nc->help = strdup(help_text);
1146                 if (replaced)
1147                         LOG_INFO("replaced existing '%s' help", cmd_name);
1148                 else
1149                         LOG_DEBUG("added '%s' help text", cmd_name);
1150         }
1151         if (usage) {
1152                 bool replaced = false;
1153                 if (nc->usage) {
1154                         if (*nc->usage)
1155                                 replaced = true;
1156                         free(nc->usage);
1157                 }
1158                 nc->usage = strdup(usage);
1159                 if (replaced)
1160                         LOG_INFO("replaced existing '%s' usage", cmd_name);
1161                 else
1162                         LOG_DEBUG("added '%s' usage text", cmd_name);
1163         }
1164         return ERROR_OK;
1165 }
1166
1167 COMMAND_HANDLER(handle_help_add_command)
1168 {
1169         if (CMD_ARGC < 2) {
1170                 LOG_ERROR("%s: insufficient arguments", CMD_NAME);
1171                 return ERROR_COMMAND_SYNTAX_ERROR;
1172         }
1173
1174         /* save help text and remove it from argument list */
1175         const char *str = CMD_ARGV[--CMD_ARGC];
1176         const char *help = !strcmp(CMD_NAME, "add_help_text") ? str : NULL;
1177         const char *usage = !strcmp(CMD_NAME, "add_usage_text") ? str : NULL;
1178         if (!help && !usage) {
1179                 LOG_ERROR("command name '%s' is unknown", CMD_NAME);
1180                 return ERROR_COMMAND_SYNTAX_ERROR;
1181         }
1182         /* likewise for the leaf command name */
1183         const char *cmd_name = CMD_ARGV[--CMD_ARGC];
1184
1185         struct command *c = NULL;
1186         if (CMD_ARGC > 0) {
1187                 c = CMD_CTX->commands;
1188                 int retval = CALL_COMMAND_HANDLER(command_help_find, c, &c);
1189                 if (ERROR_OK != retval)
1190                         return retval;
1191         }
1192         return help_add_command(CMD_CTX, c, cmd_name, help, usage);
1193 }
1194
1195 /* sleep command sleeps for <n> milliseconds
1196  * this is useful in target startup scripts
1197  */
1198 COMMAND_HANDLER(handle_sleep_command)
1199 {
1200         bool busy = false;
1201         if (CMD_ARGC == 2) {
1202                 if (strcmp(CMD_ARGV[1], "busy") == 0)
1203                         busy = true;
1204                 else
1205                         return ERROR_COMMAND_SYNTAX_ERROR;
1206         } else if (CMD_ARGC < 1 || CMD_ARGC > 2)
1207                 return ERROR_COMMAND_SYNTAX_ERROR;
1208
1209         unsigned long duration = 0;
1210         int retval = parse_ulong(CMD_ARGV[0], &duration);
1211         if (ERROR_OK != retval)
1212                 return retval;
1213
1214         if (!busy) {
1215                 int64_t then = timeval_ms();
1216                 while (timeval_ms() - then < (int64_t)duration) {
1217                         target_call_timer_callbacks_now();
1218                         usleep(1000);
1219                 }
1220         } else
1221                 busy_sleep(duration);
1222
1223         return ERROR_OK;
1224 }
1225
1226 static const struct command_registration command_subcommand_handlers[] = {
1227         {
1228                 .name = "mode",
1229                 .mode = COMMAND_ANY,
1230                 .jim_handler = jim_command_mode,
1231                 .usage = "[command_name ...]",
1232                 .help = "Returns the command modes allowed by a  command:"
1233                         "'any', 'config', or 'exec'.  If no command is"
1234                         "specified, returns the current command mode.  "
1235                         "Returns 'unknown' if an unknown command is given. "
1236                         "Command can be multiple tokens.",
1237         },
1238         {
1239                 .name = "type",
1240                 .mode = COMMAND_ANY,
1241                 .jim_handler = jim_command_type,
1242                 .usage = "command_name [...]",
1243                 .help = "Returns the type of built-in command:"
1244                         "'native', 'simple', 'group', or 'unknown'. "
1245                         "Command can be multiple tokens.",
1246         },
1247         COMMAND_REGISTRATION_DONE
1248 };
1249
1250 static const struct command_registration command_builtin_handlers[] = {
1251         {
1252                 .name = "echo",
1253                 .handler = jim_echo,
1254                 .mode = COMMAND_ANY,
1255                 .help = "Logs a message at \"user\" priority. "
1256                         "Output message to stdout. "
1257                         "Option \"-n\" suppresses trailing newline",
1258                 .usage = "[-n] string",
1259         },
1260         {
1261                 .name = "add_help_text",
1262                 .handler = handle_help_add_command,
1263                 .mode = COMMAND_ANY,
1264                 .help = "Add new command help text; "
1265                         "Command can be multiple tokens.",
1266                 .usage = "command_name helptext_string",
1267         },
1268         {
1269                 .name = "add_usage_text",
1270                 .handler = handle_help_add_command,
1271                 .mode = COMMAND_ANY,
1272                 .help = "Add new command usage text; "
1273                         "command can be multiple tokens.",
1274                 .usage = "command_name usage_string",
1275         },
1276         {
1277                 .name = "sleep",
1278                 .handler = handle_sleep_command,
1279                 .mode = COMMAND_ANY,
1280                 .help = "Sleep for specified number of milliseconds.  "
1281                         "\"busy\" will busy wait instead (avoid this).",
1282                 .usage = "milliseconds ['busy']",
1283         },
1284         {
1285                 .name = "help",
1286                 .handler = handle_help_command,
1287                 .mode = COMMAND_ANY,
1288                 .help = "Show full command help; "
1289                         "command can be multiple tokens.",
1290                 .usage = "[command_name]",
1291         },
1292         {
1293                 .name = "usage",
1294                 .handler = handle_help_command,
1295                 .mode = COMMAND_ANY,
1296                 .help = "Show basic command usage; "
1297                         "command can be multiple tokens.",
1298                 .usage = "[command_name]",
1299         },
1300         {
1301                 .name = "command",
1302                 .mode = COMMAND_ANY,
1303                 .help = "core command group (introspection)",
1304                 .chain = command_subcommand_handlers,
1305                 .usage = "",
1306         },
1307         COMMAND_REGISTRATION_DONE
1308 };
1309
1310 struct command_context *command_init(const char *startup_tcl, Jim_Interp *interp)
1311 {
1312         struct command_context *context = calloc(1, sizeof(struct command_context));
1313         const char *HostOs;
1314
1315         context->mode = COMMAND_EXEC;
1316
1317         /* Create a jim interpreter if we were not handed one */
1318         if (interp == NULL) {
1319                 /* Create an interpreter */
1320                 interp = Jim_CreateInterp();
1321                 /* Add all the Jim core commands */
1322                 Jim_RegisterCoreCommands(interp);
1323                 Jim_InitStaticExtensions(interp);
1324         }
1325
1326         context->interp = interp;
1327
1328         /* Stick to lowercase for HostOS strings. */
1329 #if defined(_MSC_VER)
1330         /* WinXX - is generic, the forward
1331          * looking problem is this:
1332          *
1333          *   "win32" or "win64"
1334          *
1335          * "winxx" is generic.
1336          */
1337         HostOs = "winxx";
1338 #elif defined(__linux__)
1339         HostOs = "linux";
1340 #elif defined(__APPLE__) || defined(__DARWIN__)
1341         HostOs = "darwin";
1342 #elif defined(__CYGWIN__)
1343         HostOs = "cygwin";
1344 #elif defined(__MINGW32__)
1345         HostOs = "mingw32";
1346 #elif defined(__ECOS)
1347         HostOs = "ecos";
1348 #elif defined(__FreeBSD__)
1349         HostOs = "freebsd";
1350 #elif defined(__NetBSD__)
1351         HostOs = "netbsd";
1352 #elif defined(__OpenBSD__)
1353         HostOs = "openbsd";
1354 #else
1355 #warning "Unrecognized host OS..."
1356         HostOs = "other";
1357 #endif
1358         Jim_SetGlobalVariableStr(interp, "ocd_HOSTOS",
1359                 Jim_NewStringObj(interp, HostOs, strlen(HostOs)));
1360
1361         Jim_CreateCommand(interp, "ocd_find", jim_find, NULL, NULL);
1362         Jim_CreateCommand(interp, "capture", jim_capture, NULL, NULL);
1363
1364         register_commands(context, NULL, command_builtin_handlers);
1365
1366         Jim_SetAssocData(interp, "context", NULL, context);
1367         if (Jim_Eval_Named(interp, startup_tcl, "embedded:startup.tcl", 1) == JIM_ERR) {
1368                 LOG_ERROR("Failed to run startup.tcl (embedded into OpenOCD)");
1369                 Jim_MakeErrorMessage(interp);
1370                 LOG_USER_N("%s", Jim_GetString(Jim_GetResult(interp), NULL));
1371                 exit(-1);
1372         }
1373         Jim_DeleteAssocData(interp, "context");
1374
1375         return context;
1376 }
1377
1378 void command_exit(struct command_context *context)
1379 {
1380         if (!context)
1381                 return;
1382
1383         Jim_FreeInterp(context->interp);
1384         command_done(context);
1385 }
1386
1387 int command_context_mode(struct command_context *cmd_ctx, enum command_mode mode)
1388 {
1389         if (!cmd_ctx)
1390                 return ERROR_COMMAND_SYNTAX_ERROR;
1391
1392         cmd_ctx->mode = mode;
1393         return ERROR_OK;
1394 }
1395
1396 void process_jim_events(struct command_context *cmd_ctx)
1397 {
1398         static int recursion;
1399         if (recursion)
1400                 return;
1401
1402         recursion++;
1403         Jim_ProcessEvents(cmd_ctx->interp, JIM_ALL_EVENTS | JIM_DONT_WAIT);
1404         recursion--;
1405 }
1406
1407 #define DEFINE_PARSE_NUM_TYPE(name, type, func, min, max) \
1408         int parse ## name(const char *str, type * ul) \
1409         { \
1410                 if (!*str) { \
1411                         LOG_ERROR("Invalid command argument"); \
1412                         return ERROR_COMMAND_ARGUMENT_INVALID; \
1413                 } \
1414                 char *end; \
1415                 *ul = func(str, &end, 0); \
1416                 if (*end) { \
1417                         LOG_ERROR("Invalid command argument"); \
1418                         return ERROR_COMMAND_ARGUMENT_INVALID; \
1419                 } \
1420                 if ((max == *ul) && (ERANGE == errno)) { \
1421                         LOG_ERROR("Argument overflow"); \
1422                         return ERROR_COMMAND_ARGUMENT_OVERFLOW; \
1423                 } \
1424                 if (min && (min == *ul) && (ERANGE == errno)) { \
1425                         LOG_ERROR("Argument underflow"); \
1426                         return ERROR_COMMAND_ARGUMENT_UNDERFLOW; \
1427                 } \
1428                 return ERROR_OK; \
1429         }
1430 DEFINE_PARSE_NUM_TYPE(_ulong, unsigned long, strtoul, 0, ULONG_MAX)
1431 DEFINE_PARSE_NUM_TYPE(_ullong, unsigned long long, strtoull, 0, ULLONG_MAX)
1432 DEFINE_PARSE_NUM_TYPE(_long, long, strtol, LONG_MIN, LONG_MAX)
1433 DEFINE_PARSE_NUM_TYPE(_llong, long long, strtoll, LLONG_MIN, LLONG_MAX)
1434
1435 #define DEFINE_PARSE_WRAPPER(name, type, min, max, functype, funcname) \
1436         int parse ## name(const char *str, type * ul) \
1437         { \
1438                 functype n; \
1439                 int retval = parse ## funcname(str, &n); \
1440                 if (ERROR_OK != retval) \
1441                         return retval; \
1442                 if (n > max) \
1443                         return ERROR_COMMAND_ARGUMENT_OVERFLOW; \
1444                 if (min) \
1445                         return ERROR_COMMAND_ARGUMENT_UNDERFLOW; \
1446                 *ul = n; \
1447                 return ERROR_OK; \
1448         }
1449
1450 #define DEFINE_PARSE_ULONGLONG(name, type, min, max) \
1451         DEFINE_PARSE_WRAPPER(name, type, min, max, unsigned long long, _ullong)
1452 DEFINE_PARSE_ULONGLONG(_uint, unsigned, 0, UINT_MAX)
1453 DEFINE_PARSE_ULONGLONG(_u64,  uint64_t, 0, UINT64_MAX)
1454 DEFINE_PARSE_ULONGLONG(_u32,  uint32_t, 0, UINT32_MAX)
1455 DEFINE_PARSE_ULONGLONG(_u16,  uint16_t, 0, UINT16_MAX)
1456 DEFINE_PARSE_ULONGLONG(_u8,   uint8_t,  0, UINT8_MAX)
1457
1458 DEFINE_PARSE_ULONGLONG(_target_addr, target_addr_t, 0, TARGET_ADDR_MAX)
1459
1460 #define DEFINE_PARSE_LONGLONG(name, type, min, max) \
1461         DEFINE_PARSE_WRAPPER(name, type, min, max, long long, _llong)
1462 DEFINE_PARSE_LONGLONG(_int, int,     n < INT_MIN,   INT_MAX)
1463 DEFINE_PARSE_LONGLONG(_s64, int64_t, n < INT64_MIN, INT64_MAX)
1464 DEFINE_PARSE_LONGLONG(_s32, int32_t, n < INT32_MIN, INT32_MAX)
1465 DEFINE_PARSE_LONGLONG(_s16, int16_t, n < INT16_MIN, INT16_MAX)
1466 DEFINE_PARSE_LONGLONG(_s8,  int8_t,  n < INT8_MIN,  INT8_MAX)
1467
1468 static int command_parse_bool(const char *in, bool *out,
1469         const char *on, const char *off)
1470 {
1471         if (strcasecmp(in, on) == 0)
1472                 *out = true;
1473         else if (strcasecmp(in, off) == 0)
1474                 *out = false;
1475         else
1476                 return ERROR_COMMAND_SYNTAX_ERROR;
1477         return ERROR_OK;
1478 }
1479
1480 int command_parse_bool_arg(const char *in, bool *out)
1481 {
1482         if (command_parse_bool(in, out, "on", "off") == ERROR_OK)
1483                 return ERROR_OK;
1484         if (command_parse_bool(in, out, "enable", "disable") == ERROR_OK)
1485                 return ERROR_OK;
1486         if (command_parse_bool(in, out, "true", "false") == ERROR_OK)
1487                 return ERROR_OK;
1488         if (command_parse_bool(in, out, "yes", "no") == ERROR_OK)
1489                 return ERROR_OK;
1490         if (command_parse_bool(in, out, "1", "0") == ERROR_OK)
1491                 return ERROR_OK;
1492         return ERROR_COMMAND_SYNTAX_ERROR;
1493 }
1494
1495 COMMAND_HELPER(handle_command_parse_bool, bool *out, const char *label)
1496 {
1497         switch (CMD_ARGC) {
1498                 case 1: {
1499                         const char *in = CMD_ARGV[0];
1500                         if (command_parse_bool_arg(in, out) != ERROR_OK) {
1501                                 LOG_ERROR("%s: argument '%s' is not valid", CMD_NAME, in);
1502                                 return ERROR_COMMAND_SYNTAX_ERROR;
1503                         }
1504                 }
1505                         /* fallthrough */
1506                 case 0:
1507                         LOG_INFO("%s is %s", label, *out ? "enabled" : "disabled");
1508                         break;
1509                 default:
1510                         return ERROR_COMMAND_SYNTAX_ERROR;
1511         }
1512         return ERROR_OK;
1513 }