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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 Jim_Interp *interp = NULL;
  48
  49 static int run_command(struct command_context *context,
  50                 struct command *c, const char *words[], unsigned num_words);
  51
  52 static void tcl_output(void *privData, const char *file, unsigned line,
  53                 const char *function, const char *string)
  54 {
  55         Jim_Obj *tclOutput = (Jim_Obj *)privData;
  56         Jim_AppendString(interp, tclOutput, string, strlen(string));
  57 }
  58
  59 extern struct command_context *global_cmd_ctx;
  60
  61 void script_debug(Jim_Interp *interp, const char *name,
  62                 unsigned argc, Jim_Obj *const *argv)
  63 {
  64         LOG_DEBUG("command - %s", name);
  65         for (unsigned i = 0; i < argc; i++)
  66         {
  67                 int len;
  68                 const char *w = Jim_GetString(argv[i], &len);
  69
  70                 /* end of line comment? */
  71                 if (*w == '#')
  72                         break;
  73
  74                 LOG_DEBUG("%s - argv[%d]=%s", name, i, w);
  75         }
  76 }
  77
  78 static int script_command(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
  79 {
  80         /* the private data is stashed in the interp structure */
  81         struct command *c;
  82         struct command_context *context;
  83         int retval;
  84         int i;
  85         int nwords;
  86         char **words;
  87
  88         /* DANGER!!!! be careful what we invoke here, since interp->cmdPrivData might
  89          * get overwritten by running other Jim commands! Treat it as an
  90          * emphemeral global variable that is used in lieu of an argument
  91          * to the fn and fish it out manually.
  92          */
  93         c = interp->cmdPrivData;
  94         if (c == NULL)
  95         {
  96                 LOG_ERROR("BUG: interp->cmdPrivData == NULL");
  97                 return JIM_ERR;
  98         }
  99         target_call_timer_callbacks_now();
 100         LOG_USER_N("%s", ""); /* Keep GDB connection alive*/
 101
 102         script_debug(interp, c->name, argc, argv);
 103
 104         words = malloc(argc * sizeof(char *));
 105         for (i = 0; i < argc; i++)
 106         {
 107                 int len;
 108                 const char *w = Jim_GetString(argv[i], &len);
 109                 if (*w=='#')
 110                 {
 111                         /* hit an end of line comment */
 112                         break;
 113                 }
 114                 words[i] = strdup(w);
 115                 if (words[i] == NULL)
 116                 {
 117                         int j;
 118                         for (j = 0; j < i; j++)
 119                                 free(words[j]);
 120                         free(words);
 121                         return JIM_ERR;
 122                 }
 123         }
 124         nwords = i;
 125
 126         /* grab the command context from the associated data */
 127         context = Jim_GetAssocData(interp, "context");
 128         if (context == NULL)
 129         {
 130                 /* Tcl can invoke commands directly instead of via command_run_line(). This would
 131                  * happen when the Jim Tcl interpreter is provided by eCos.
 132                  */
 133                 context = global_cmd_ctx;
 134         }
 135
 136         /* capture log output and return it */
 137         Jim_Obj *tclOutput = Jim_NewStringObj(interp, "", 0);
 138         /* a garbage collect can happen, so we need a reference count to this object */
 139         Jim_IncrRefCount(tclOutput);
 140
 141         log_add_callback(tcl_output, tclOutput);
 142
 143         retval = run_command(context, c, (const char **)words, nwords);
 144
 145         log_remove_callback(tcl_output, tclOutput);
 146
 147         /* We dump output into this local variable */
 148         Jim_SetResult(interp, tclOutput);
 149         Jim_DecrRefCount(interp, tclOutput);
 150
 151         for (i = 0; i < nwords; i++)
 152                 free(words[i]);
 153         free(words);
 154
 155         int *return_retval = Jim_GetAssocData(interp, "retval");
 156         if (return_retval != NULL)
 157         {
 158                 *return_retval = retval;
 159         }
 160
 161         return (retval == ERROR_OK)?JIM_OK:JIM_ERR;
 162 }
 163
 164 static Jim_Obj *command_name_list(struct command *c)
 165 {
 166         Jim_Obj *cmd_list = c->parent ?
 167                         command_name_list(c->parent) :
 168                         Jim_NewListObj(interp, NULL, 0);
 169         Jim_ListAppendElement(interp, cmd_list,
 170                         Jim_NewStringObj(interp, c->name, -1));
 171
 172         return cmd_list;
 173 }
 174
 175 static void command_helptext_add(Jim_Obj *cmd_list, const char *help)
 176 {
 177         Jim_Obj *cmd_entry = Jim_NewListObj(interp, NULL, 0);
 178         Jim_ListAppendElement(interp, cmd_entry, cmd_list);
 179         Jim_ListAppendElement(interp, cmd_entry,
 180                         Jim_NewStringObj(interp, help ? : "", -1));
 181
 182         /* accumulate help text in Tcl helptext list.  */
 183         Jim_Obj *helptext = Jim_GetGlobalVariableStr(interp,
 184                         "ocd_helptext", JIM_ERRMSG);
 185         if (Jim_IsShared(helptext))
 186                 helptext = Jim_DuplicateObj(interp, helptext);
 187         Jim_ListAppendElement(interp, helptext, cmd_entry);
 188 }
 189
 190 /* nice short description of source file */
 191 #define __THIS__FILE__ "command.c"
 192
 193 /**
 194  * Find a command by name from a list of commands.
 195  * @returns The named command if found, or NULL.
 196  */
 197 static struct command *command_find(struct command **head, const char *name)
 198 {
 199         assert(head);
 200         for (struct command *cc = *head; cc; cc = cc->next)
 201         {
 202                 if (strcmp(cc->name, name) == 0)
 203                         return cc;
 204         }
 205         return NULL;
 206 }
 207
 208 /**
 209  * Add the command to the end of linked list.
 210  * @returns Returns false if the named command already exists in the list.
 211  * Returns true otherwise.
 212  */
 213 static void command_add_child(struct command **head, struct command *c)
 214 {
 215         assert(head);
 216         if (NULL == *head)
 217         {
 218                 *head = c;
 219                 return;
 220         }
 221         struct command *cc = *head;
 222         while (cc->next) cc = cc->next;
 223         cc->next = c;
 224 }
 225
 226 struct command* register_command(struct command_context *context,
 227                 struct command *parent, char *name, command_handler_t handler,
 228                 enum command_mode mode, char *help)
 229 {
 230         if (!context || !name)
 231                 return NULL;
 232
 233         struct command **head = parent ? &parent->children : &context->commands;
 234         struct command *c = command_find(head, name);
 235         if (NULL != c)
 236                 return c;
 237
 238         c = malloc(sizeof(struct command));
 239
 240         c->name = strdup(name);
 241         c->parent = parent;
 242         c->children = NULL;
 243         c->handler = handler;
 244         c->mode = mode;
 245         c->next = NULL;
 246
 247         command_add_child(head, c);
 248
 249         command_helptext_add(command_name_list(c), help);
 250
 251         /* just a placeholder, no handler */
 252         if (c->handler == NULL)
 253                 return c;
 254
 255         const char *full_name = command_name(c, '_');
 256
 257         const char *ocd_name = alloc_printf("ocd_%s", full_name);
 258         Jim_CreateCommand(interp, ocd_name, script_command, c, NULL);
 259         free((void *)ocd_name);
 260
 261         /* we now need to add an overrideable proc */
 262         const char *override_name = alloc_printf("proc %s {args} {"
 263                         "if {[catch {eval ocd_%s $args}] == 0} "
 264                         "{return \"\"} else {return -code error}}",
 265                         full_name, full_name);
 266         Jim_Eval_Named(interp, override_name, __THIS__FILE__, __LINE__);
 267         free((void *)override_name);
 268
 269         free((void *)full_name);
 270
 271         return c;
 272 }
 273
 274 int unregister_all_commands(struct command_context *context)
 275 {
 276         struct command *c, *c2;
 277
 278         if (context == NULL)
 279                 return ERROR_OK;
 280
 281         while (NULL != context->commands)
 282         {
 283                 c = context->commands;
 284
 285                 while (NULL != c->children)
 286                 {
 287                         c2 = c->children;
 288                         c->children = c->children->next;
 289                         free(c2->name);
 290                         c2->name = NULL;
 291                         free(c2);
 292                         c2 = NULL;
 293                 }
 294
 295                 context->commands = context->commands->next;
 296
 297                 free(c->name);
 298                 c->name = NULL;
 299                 free(c);
 300                 c = NULL;
 301         }
 302
 303         return ERROR_OK;
 304 }
 305
 306 int unregister_command(struct command_context *context, char *name)
 307 {
 308         struct command *c, *p = NULL, *c2;
 309
 310         if ((!context) || (!name))
 311                 return ERROR_INVALID_ARGUMENTS;
 312
 313         /* find command */
 314         c = context->commands;
 315
 316         while (NULL != c)
 317         {
 318                 if (strcmp(name, c->name) == 0)
 319                 {
 320                         /* unlink command */
 321                         if (p)
 322                         {
 323                                 p->next = c->next;
 324                         }
 325                         else
 326                         {
 327                                 /* first element in command list */
 328                                 context->commands = c->next;
 329                         }
 330
 331                         /* unregister children */
 332                         while (NULL != c->children)
 333                         {
 334                                 c2 = c->children;
 335                                 c->children = c->children->next;
 336                                 free(c2->name);
 337                                 c2->name = NULL;
 338                                 free(c2);
 339                                 c2 = NULL;
 340                         }
 341
 342                         /* delete command */
 343                         free(c->name);
 344                         c->name = NULL;
 345                         free(c);
 346                         c = NULL;
 347                         return ERROR_OK;
 348                 }
 349
 350                 /* remember the last command for unlinking */
 351                 p = c;
 352                 c = c->next;
 353         }
 354
 355         return ERROR_OK;
 356 }
 357
 358 void command_output_text(struct command_context *context, const char *data)
 359 {
 360         if (context && context->output_handler && data) {
 361                 context->output_handler(context, data);
 362         }
 363 }
 364
 365 void command_print_sameline(struct command_context *context, const char *format, ...)
 366 {
 367         char *string;
 368
 369         va_list ap;
 370         va_start(ap, format);
 371
 372         string = alloc_vprintf(format, ap);
 373         if (string != NULL)
 374         {
 375                 /* we want this collected in the log + we also want to pick it up as a tcl return
 376                  * value.
 377                  *
 378                  * The latter bit isn't precisely neat, but will do for now.
 379                  */
 380                 LOG_USER_N("%s", string);
 381                 /* We already printed it above */
 382                 /* command_output_text(context, string); */
 383                 free(string);
 384         }
 385
 386         va_end(ap);
 387 }
 388
 389 void command_print(struct command_context *context, const char *format, ...)
 390 {
 391         char *string;
 392
 393         va_list ap;
 394         va_start(ap, format);
 395
 396         string = alloc_vprintf(format, ap);
 397         if (string != NULL)
 398         {
 399                 strcat(string, "\n"); /* alloc_vprintf guaranteed the buffer to be at least one char longer */
 400                 /* we want this collected in the log + we also want to pick it up as a tcl return
 401                  * value.
 402                  *
 403                  * The latter bit isn't precisely neat, but will do for now.
 404                  */
 405                 LOG_USER_N("%s", string);
 406                 /* We already printed it above */
 407                 /* command_output_text(context, string); */
 408                 free(string);
 409         }
 410
 411         va_end(ap);
 412 }
 413
 414 static char *__command_name(struct command *c, char delim, unsigned extra)
 415 {
 416         char *name;
 417         unsigned len = strlen(c->name);
 418         if (NULL == c->parent) {
 419                 // allocate enough for the name, child names, and '\0'
 420                 name = malloc(len + extra + 1);
 421                 strcpy(name, c->name);
 422         } else {
 423                 // parent's extra must include both the space and name
 424                 name = __command_name(c->parent, delim, 1 + len + extra);
 425                 char dstr[2] = { delim, 0 };
 426                 strcat(name, dstr);
 427                 strcat(name, c->name);
 428         }
 429         return name;
 430 }
 431 char *command_name(struct command *c, char delim)
 432 {
 433         return __command_name(c, delim, 0);
 434 }
 435
 436 static int run_command(struct command_context *context,
 437                 struct command *c, const char *words[], unsigned num_words)
 438 {
 439         if (!((context->mode == COMMAND_CONFIG) || (c->mode == COMMAND_ANY) || (c->mode == context->mode)))
 440         {
 441                 /* Config commands can not run after the config stage */
 442                 LOG_ERROR("Command '%s' only runs during configuration stage", c->name);
 443                 return ERROR_FAIL;
 444         }
 445
 446         struct command_invocation cmd = {
 447                         .ctx = context,
 448                         .name = c->name,
 449                         .argc = num_words - 1,
 450                         .argv = words + 1,
 451                 };
 452         int retval = c->handler(&cmd);
 453         if (retval == ERROR_COMMAND_SYNTAX_ERROR)
 454         {
 455                 /* Print help for command */
 456                 char *full_name = command_name(c, ' ');
 457                 if (NULL != full_name) {
 458                         command_run_linef(context, "help %s", full_name);
 459                         free(full_name);
 460                 } else
 461                         retval = -ENOMEM;
 462         }
 463         else if (retval == ERROR_COMMAND_CLOSE_CONNECTION)
 464         {
 465                 /* just fall through for a shutdown request */
 466         }
 467         else if (retval != ERROR_OK)
 468         {
 469                 /* we do not print out an error message because the command *should*
 470                  * have printed out an error
 471                  */
 472                 LOG_DEBUG("Command failed with error code %d", retval);
 473         }
 474
 475         return retval;
 476 }
 477
 478 int command_run_line(struct command_context *context, char *line)
 479 {
 480         /* all the parent commands have been registered with the interpreter
 481          * so, can just evaluate the line as a script and check for
 482          * results
 483          */
 484         /* run the line thru a script engine */
 485         int retval = ERROR_FAIL;
 486         int retcode;
 487         /* Beware! This code needs to be reentrant. It is also possible
 488          * for OpenOCD commands to be invoked directly from Tcl. This would
 489          * happen when the Jim Tcl interpreter is provided by eCos for
 490          * instance.
 491          */
 492         Jim_DeleteAssocData(interp, "context");
 493         retcode = Jim_SetAssocData(interp, "context", NULL, context);
 494         if (retcode == JIM_OK)
 495         {
 496                 /* associated the return value */
 497                 Jim_DeleteAssocData(interp, "retval");
 498                 retcode = Jim_SetAssocData(interp, "retval", NULL, &retval);
 499                 if (retcode == JIM_OK)
 500                 {
 501                         retcode = Jim_Eval_Named(interp, line, __THIS__FILE__, __LINE__);
 502
 503                         Jim_DeleteAssocData(interp, "retval");
 504                 }
 505                 Jim_DeleteAssocData(interp, "context");
 506         }
 507         if (retcode == JIM_ERR) {
 508                 if (retval != ERROR_COMMAND_CLOSE_CONNECTION)
 509                 {
 510                         /* We do not print the connection closed error message */
 511                         Jim_PrintErrorMessage(interp);
 512                 }
 513                 if (retval == ERROR_OK)
 514                 {
 515                         /* It wasn't a low level OpenOCD command that failed */
 516                         return ERROR_FAIL;
 517                 }
 518                 return retval;
 519         } else if (retcode == JIM_EXIT) {
 520                 /* ignore. */
 521                 /* exit(Jim_GetExitCode(interp)); */
 522         } else {
 523                 const char *result;
 524                 int reslen;
 525
 526                 result = Jim_GetString(Jim_GetResult(interp), &reslen);
 527                 if (reslen > 0)
 528                 {
 529                         int i;
 530                         char buff[256 + 1];
 531                         for (i = 0; i < reslen; i += 256)
 532                         {
 533                                 int chunk;
 534                                 chunk = reslen - i;
 535                                 if (chunk > 256)
 536                                         chunk = 256;
 537                                 strncpy(buff, result + i, chunk);
 538                                 buff[chunk] = 0;
 539                                 LOG_USER_N("%s", buff);
 540                         }
 541                         LOG_USER_N("%s", "\n");
 542                 }
 543                 retval = ERROR_OK;
 544         }
 545         return retval;
 546 }
 547
 548 int command_run_linef(struct command_context *context, const char *format, ...)
 549 {
 550         int retval = ERROR_FAIL;
 551         char *string;
 552         va_list ap;
 553         va_start(ap, format);
 554         string = alloc_vprintf(format, ap);
 555         if (string != NULL)
 556         {
 557                 retval = command_run_line(context, string);
 558         }
 559         va_end(ap);
 560         return retval;
 561 }
 562
 563 void command_set_output_handler(struct command_context* context,
 564                 command_output_handler_t output_handler, void *priv)
 565 {
 566         context->output_handler = output_handler;
 567         context->output_handler_priv = priv;
 568 }
 569
 570 struct command_context* copy_command_context(struct command_context* context)
 571 {
 572         struct command_context* copy_context = malloc(sizeof(struct command_context));
 573
 574         *copy_context = *context;
 575
 576         return copy_context;
 577 }
 578
 579 int command_done(struct command_context *context)
 580 {
 581         free(context);
 582         context = NULL;
 583
 584         return ERROR_OK;
 585 }
 586
 587 /* find full path to file */
 588 static int jim_find(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 589 {
 590         if (argc != 2)
 591                 return JIM_ERR;
 592         const char *file = Jim_GetString(argv[1], NULL);
 593         char *full_path = find_file(file);
 594         if (full_path == NULL)
 595                 return JIM_ERR;
 596         Jim_Obj *result = Jim_NewStringObj(interp, full_path, strlen(full_path));
 597         free(full_path);
 598
 599         Jim_SetResult(interp, result);
 600         return JIM_OK;
 601 }
 602
 603 static int jim_echo(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 604 {
 605         if (argc != 2)
 606                 return JIM_ERR;
 607         const char *str = Jim_GetString(argv[1], NULL);
 608         LOG_USER("%s", str);
 609         return JIM_OK;
 610 }
 611
 612 static size_t openocd_jim_fwrite(const void *_ptr, size_t size, size_t n, void *cookie)
 613 {
 614         size_t nbytes;
 615         const char *ptr;
 616         Jim_Interp *interp;
 617
 618         /* make it a char easier to read code */
 619         ptr = _ptr;
 620         interp = cookie;
 621         nbytes = size * n;
 622         if (ptr == NULL || interp == NULL || nbytes == 0) {
 623                 return 0;
 624         }
 625
 626         /* do we have to chunk it? */
 627         if (ptr[nbytes] == 0)
 628         {
 629                 /* no it is a C style string */
 630                 LOG_USER_N("%s", ptr);
 631                 return strlen(ptr);
 632         }
 633         /* GRR we must chunk - not null terminated */
 634         while (nbytes) {
 635                 char chunk[128 + 1];
 636                 int x;
 637
 638                 x = nbytes;
 639                 if (x > 128) {
 640                         x = 128;
 641                 }
 642                 /* copy it */
 643                 memcpy(chunk, ptr, x);
 644                 /* terminate it */
 645                 chunk[n] = 0;
 646                 /* output it */
 647                 LOG_USER_N("%s", chunk);
 648                 ptr += x;
 649                 nbytes -= x;
 650         }
 651
 652         return n;
 653 }
 654
 655 static size_t openocd_jim_fread(void *ptr, size_t size, size_t n, void *cookie)
 656 {
 657         /* TCL wants to read... tell him no */
 658         return 0;
 659 }
 660
 661 static int openocd_jim_vfprintf(void *cookie, const char *fmt, va_list ap)
 662 {
 663         char *cp;
 664         int n;
 665         Jim_Interp *interp;
 666
 667         n = -1;
 668         interp = cookie;
 669         if (interp == NULL)
 670                 return n;
 671
 672         cp = alloc_vprintf(fmt, ap);
 673         if (cp)
 674         {
 675                 LOG_USER_N("%s", cp);
 676                 n = strlen(cp);
 677                 free(cp);
 678         }
 679         return n;
 680 }
 681
 682 static int openocd_jim_fflush(void *cookie)
 683 {
 684         /* nothing to flush */
 685         return 0;
 686 }
 687
 688 static char* openocd_jim_fgets(char *s, int size, void *cookie)
 689 {
 690         /* not supported */
 691         errno = ENOTSUP;
 692         return NULL;
 693 }
 694
 695 static int jim_capture(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 696 {
 697         if (argc != 2)
 698                 return JIM_ERR;
 699         int retcode;
 700         const char *str = Jim_GetString(argv[1], NULL);
 701
 702         /* capture log output and return it */
 703         Jim_Obj *tclOutput = Jim_NewStringObj(interp, "", 0);
 704         /* a garbage collect can happen, so we need a reference count to this object */
 705         Jim_IncrRefCount(tclOutput);
 706
 707         log_add_callback(tcl_output, tclOutput);
 708
 709         retcode = Jim_Eval_Named(interp, str, __THIS__FILE__, __LINE__);
 710
 711         log_remove_callback(tcl_output, tclOutput);
 712
 713         /* We dump output into this local variable */
 714         Jim_SetResult(interp, tclOutput);
 715         Jim_DecrRefCount(interp, tclOutput);
 716
 717         return retcode;
 718 }
 719
 720 /* sleep command sleeps for <n> miliseconds
 721  * this is useful in target startup scripts
 722  */
 723 COMMAND_HANDLER(handle_sleep_command)
 724 {
 725         bool busy = false;
 726         if (CMD_ARGC == 2)
 727         {
 728                 if (strcmp(CMD_ARGV[1], "busy") == 0)
 729                         busy = true;
 730                 else
 731                         return ERROR_COMMAND_SYNTAX_ERROR;
 732         }
 733         else if (CMD_ARGC < 1 || CMD_ARGC > 2)
 734                 return ERROR_COMMAND_SYNTAX_ERROR;
 735
 736         unsigned long duration = 0;
 737         int retval = parse_ulong(CMD_ARGV[0], &duration);
 738         if (ERROR_OK != retval)
 739                 return retval;
 740
 741         if (!busy)
 742         {
 743                 long long then = timeval_ms();
 744                 while (timeval_ms() - then < (long long)duration)
 745                 {
 746                         target_call_timer_callbacks_now();
 747                         usleep(1000);
 748                 }
 749         }
 750         else
 751                 busy_sleep(duration);
 752
 753         return ERROR_OK;
 754 }
 755
 756 struct command_context* command_init(const char *startup_tcl)
 757 {
 758         struct command_context* context = malloc(sizeof(struct command_context));
 759         const char *HostOs;
 760
 761         context->mode = COMMAND_EXEC;
 762         context->commands = NULL;
 763         context->current_target = 0;
 764         context->output_handler = NULL;
 765         context->output_handler_priv = NULL;
 766
 767 #if !BUILD_ECOSBOARD
 768         Jim_InitEmbedded();
 769         /* Create an interpreter */
 770         interp = Jim_CreateInterp();
 771         /* Add all the Jim core commands */
 772         Jim_RegisterCoreCommands(interp);
 773 #endif
 774
 775 #if defined(_MSC_VER)
 776         /* WinXX - is generic, the forward
 777          * looking problem is this:
 778          *
 779          *   "win32" or "win64"
 780          *
 781          * "winxx" is generic.
 782          */
 783         HostOs = "winxx";
 784 #elif defined(__linux__)
 785         HostOs = "linux";
 786 #elif defined(__DARWIN__)
 787         HostOs = "darwin";
 788 #elif defined(__CYGWIN__)
 789         HostOs = "cygwin";
 790 #elif defined(__MINGW32__)
 791         HostOs = "mingw32";
 792 #elif defined(__ECOS)
 793         HostOs = "ecos";
 794 #else
 795 #warn unrecognized host OS...
 796         HostOs = "other";
 797 #endif
 798         Jim_SetGlobalVariableStr(interp, "ocd_HOSTOS",
 799                         Jim_NewStringObj(interp, HostOs , strlen(HostOs)));
 800
 801         Jim_CreateCommand(interp, "ocd_find", jim_find, NULL, NULL);
 802         Jim_CreateCommand(interp, "echo", jim_echo, NULL, NULL);
 803         Jim_CreateCommand(interp, "capture", jim_capture, NULL, NULL);
 804
 805         /* Set Jim's STDIO */
 806         interp->cookie_stdin = interp;
 807         interp->cookie_stdout = interp;
 808         interp->cookie_stderr = interp;
 809         interp->cb_fwrite = openocd_jim_fwrite;
 810         interp->cb_fread = openocd_jim_fread ;
 811         interp->cb_vfprintf = openocd_jim_vfprintf;
 812         interp->cb_fflush = openocd_jim_fflush;
 813         interp->cb_fgets = openocd_jim_fgets;
 814
 815 #if !BUILD_ECOSBOARD
 816         Jim_EventLoopOnLoad(interp);
 817 #endif
 818         if (Jim_Eval_Named(interp, startup_tcl, "embedded:startup.tcl",1) == JIM_ERR)
 819         {
 820                 LOG_ERROR("Failed to run startup.tcl (embedded into OpenOCD)");
 821                 Jim_PrintErrorMessage(interp);
 822                 exit(-1);
 823         }
 824
 825         register_command(context, NULL, "sleep",
 826                         handle_sleep_command, COMMAND_ANY,
 827                         "<n> [busy] - sleep for n milliseconds. "
 828                         "\"busy\" means busy wait");
 829
 830         return context;
 831 }
 832
 833 int command_context_mode(struct command_context *cmd_ctx, enum command_mode mode)
 834 {
 835         if (!cmd_ctx)
 836                 return ERROR_INVALID_ARGUMENTS;
 837
 838         cmd_ctx->mode = mode;
 839         return ERROR_OK;
 840 }
 841
 842 void process_jim_events(void)
 843 {
 844 #if !BUILD_ECOSBOARD
 845         static int recursion = 0;
 846
 847         if (!recursion)
 848         {
 849                 recursion++;
 850                 Jim_ProcessEvents (interp, JIM_ALL_EVENTS | JIM_DONT_WAIT);
 851                 recursion--;
 852         }
 853 #endif
 854 }
 855
 856 void register_jim(struct command_context *cmd_ctx, const char *name,
 857                 Jim_CmdProc cmd, const char *help)
 858 {
 859         Jim_CreateCommand(interp, name, cmd, NULL, NULL);
 860
 861         Jim_Obj *cmd_list = Jim_NewListObj(interp, NULL, 0);
 862         Jim_ListAppendElement(interp, cmd_list,
 863                         Jim_NewStringObj(interp, name, -1));
 864
 865         command_helptext_add(cmd_list, help);
 866 }
 867
 868 #define DEFINE_PARSE_NUM_TYPE(name, type, func, min, max) \
 869         int parse##name(const char *str, type *ul) \
 870         { \
 871                 if (!*str) \
 872                 { \
 873                         LOG_ERROR("Invalid command argument"); \
 874                         return ERROR_COMMAND_ARGUMENT_INVALID; \
 875                 } \
 876                 char *end; \
 877                 *ul = func(str, &end, 0); \
 878                 if (*end) \
 879                 { \
 880                         LOG_ERROR("Invalid command argument"); \
 881                         return ERROR_COMMAND_ARGUMENT_INVALID; \
 882                 } \
 883                 if ((max == *ul) && (ERANGE == errno)) \
 884                 { \
 885                         LOG_ERROR("Argument overflow"); \
 886                         return ERROR_COMMAND_ARGUMENT_OVERFLOW; \
 887                 } \
 888                 if (min && (min == *ul) && (ERANGE == errno)) \
 889                 { \
 890                         LOG_ERROR("Argument underflow"); \
 891                         return ERROR_COMMAND_ARGUMENT_UNDERFLOW; \
 892                 } \
 893                 return ERROR_OK; \
 894         }
 895 DEFINE_PARSE_NUM_TYPE(_ulong, unsigned long , strtoul, 0, ULONG_MAX)
 896 DEFINE_PARSE_NUM_TYPE(_ullong, unsigned long long, strtoull, 0, ULLONG_MAX)
 897 DEFINE_PARSE_NUM_TYPE(_long, long , strtol, LONG_MIN, LONG_MAX)
 898 DEFINE_PARSE_NUM_TYPE(_llong, long long, strtoll, LLONG_MIN, LLONG_MAX)
 899
 900 #define DEFINE_PARSE_WRAPPER(name, type, min, max, functype, funcname) \
 901         int parse##name(const char *str, type *ul) \
 902         { \
 903                 functype n; \
 904                 int retval = parse##funcname(str, &n); \
 905                 if (ERROR_OK != retval) \
 906                         return retval; \
 907                 if (n > max) \
 908                         return ERROR_COMMAND_ARGUMENT_OVERFLOW; \
 909                 if (min) \
 910                         return ERROR_COMMAND_ARGUMENT_UNDERFLOW; \
 911                 *ul = n; \
 912                 return ERROR_OK; \
 913         }
 914
 915 #define DEFINE_PARSE_ULONG(name, type, min, max) \
 916         DEFINE_PARSE_WRAPPER(name, type, min, max, unsigned long, _ulong)
 917 DEFINE_PARSE_ULONG(_uint, unsigned, 0, UINT_MAX)
 918 DEFINE_PARSE_ULONG(_u32, uint32_t, 0, UINT32_MAX)
 919 DEFINE_PARSE_ULONG(_u16, uint16_t, 0, UINT16_MAX)
 920 DEFINE_PARSE_ULONG(_u8, uint8_t, 0, UINT8_MAX)
 921
 922 #define DEFINE_PARSE_LONG(name, type, min, max) \
 923         DEFINE_PARSE_WRAPPER(name, type, min, max, long, _long)
 924 DEFINE_PARSE_LONG(_int, int, n < INT_MIN, INT_MAX)
 925 DEFINE_PARSE_LONG(_s32, int32_t, n < INT32_MIN, INT32_MAX)
 926 DEFINE_PARSE_LONG(_s16, int16_t, n < INT16_MIN, INT16_MAX)
 927 DEFINE_PARSE_LONG(_s8, int8_t, n < INT8_MIN, INT8_MAX)
 928
 929 static int command_parse_bool(const char *in, bool *out,
 930                 const char *on, const char *off)
 931 {
 932         if (strcasecmp(in, on) == 0)
 933                 *out = true;
 934         else if (strcasecmp(in, off) == 0)
 935                 *out = false;
 936         else
 937                 return ERROR_COMMAND_SYNTAX_ERROR;
 938         return  ERROR_OK;
 939 }
 940
 941 int command_parse_bool_arg(const char *in, bool *out)
 942 {
 943         if (command_parse_bool(in, out, "on", "off") == ERROR_OK)
 944                 return ERROR_OK;
 945         if (command_parse_bool(in, out, "enable", "disable") == ERROR_OK)
 946                 return ERROR_OK;
 947         if (command_parse_bool(in, out, "true", "false") == ERROR_OK)
 948                 return ERROR_OK;
 949         if (command_parse_bool(in, out, "yes", "no") == ERROR_OK)
 950                 return ERROR_OK;
 951         if (command_parse_bool(in, out, "1", "0") == ERROR_OK)
 952                 return ERROR_OK;
 953         return ERROR_INVALID_ARGUMENTS;
 954 }
 955
 956 COMMAND_HELPER(handle_command_parse_bool, bool *out, const char *label)
 957 {
 958         switch (CMD_ARGC) {
 959         case 1: {
 960                 const char *in = CMD_ARGV[0];
 961                 if (command_parse_bool_arg(in, out) != ERROR_OK)
 962                 {
 963                         LOG_ERROR("%s: argument '%s' is not valid", CMD_NAME, in);
 964                         return ERROR_INVALID_ARGUMENTS;
 965                 }
 966                 // fall through
 967         }
 968         case 0:
 969                 LOG_INFO("%s is %s", label, *out ? "enabled" : "disabled");
 970                 break;
 971         default:
 972                 return ERROR_INVALID_ARGUMENTS;
 973         }
 974         return ERROR_OK;
 975 }
 976
 977