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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 #include "replacements.h"
  34 #include "target.h"
  35 #include "command.h"
  36 #include "configuration.h"
  37
  38 #include "log.h"
  39 #include "time_support.h"
  40 #include "jim-eventloop.h"
  41
  42 #include <stdlib.h>
  43 #include <string.h>
  44 #include <ctype.h>
  45 #include <stdarg.h>
  46 #include <stdio.h>
  47 #include <unistd.h>
  48 #include <errno.h>
  49
  50 int fast_and_dangerous = 0;
  51 Jim_Interp *interp = NULL;
  52
  53 int handle_sleep_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  54 int handle_fast_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  55
  56 int run_command(command_context_t *context, command_t *c, char *words[], int num_words);
  57
  58 static void tcl_output(void *privData, const char *file, int line, const char *function, const char *string)
  59 {
  60         Jim_Obj *tclOutput=(Jim_Obj *)privData;
  61
  62         Jim_AppendString(interp, tclOutput, string, strlen(string));
  63 }
  64
  65 extern command_context_t *global_cmd_ctx;
  66
  67 static int script_command(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
  68 {
  69         /* the private data is stashed in the interp structure */
  70         command_t *c;
  71         command_context_t *context;
  72         int retval;
  73         int i;
  74         int nwords;
  75         char **words;
  76
  77         /* DANGER!!!! be careful what we invoke here, since interp->cmdPrivData might
  78          * get overwritten by running other Jim commands! Treat it as an
  79          * emphemeral global variable that is used in lieu of an argument
  80          * to the fn and fish it out manually.
  81          */
  82         c = interp->cmdPrivData;
  83         if (c==NULL)
  84         {
  85                 LOG_ERROR("BUG: interp->cmdPrivData==NULL");
  86                 return JIM_ERR;
  87         }
  88         target_call_timer_callbacks_now();
  89         LOG_USER_N("%s", ""); /* Keep GDB connection alive*/
  90
  91         LOG_DEBUG("script_command - %s", c->name);
  92
  93         words = malloc(sizeof(char *) * argc);
  94         for (i = 0; i < argc; i++)
  95         {
  96                 int len;
  97                 const char *w=Jim_GetString(argv[i], &len);
  98                 if (*w=='#')
  99                 {
 100                         /* hit an end of line comment */
 101                         break;
 102                 }
 103                 words[i] = strdup(w);
 104                 if (words[i] == NULL)
 105                 {
 106                         return JIM_ERR;
 107                 }
 108                 LOG_DEBUG("script_command - %s, argv[%u]=%s", c->name, i, words[i]);
 109         }
 110         nwords = i;
 111
 112         /* grab the command context from the associated data */
 113         context = Jim_GetAssocData(interp, "context");
 114         if (context == NULL)
 115         {
 116                 /* Tcl can invoke commands directly instead of via command_run_line(). This would
 117                  * happen when the Jim Tcl interpreter is provided by eCos.
 118                  */
 119                 context = global_cmd_ctx;
 120         }
 121
 122         /* capture log output and return it */
 123         Jim_Obj *tclOutput = Jim_NewStringObj(interp, "", 0);
 124         /* a garbage collect can happen, so we need a reference count to this object */
 125         Jim_IncrRefCount(tclOutput);
 126
 127         log_add_callback(tcl_output, tclOutput);
 128
 129         retval = run_command(context, c, words, nwords);
 130
 131         log_remove_callback(tcl_output, tclOutput);
 132
 133         /* We dump output into this local variable */
 134         Jim_SetResult(interp, tclOutput);
 135         Jim_DecrRefCount(interp, tclOutput);
 136
 137         for (i = 0; i < nwords; i++)
 138                 free(words[i]);
 139         free(words);
 140
 141         int *return_retval = Jim_GetAssocData(interp, "retval");
 142         if (return_retval != NULL)
 143         {
 144                 *return_retval = retval;
 145         }
 146
 147         return (retval==ERROR_OK)?JIM_OK:JIM_ERR;
 148 }
 149
 150 command_t* register_command(command_context_t *context, command_t *parent, char *name, int (*handler)(struct command_context_s *context, char* name, char** args, int argc), enum command_mode mode, char *help)
 151 {
 152         command_t *c, *p;
 153
 154         if (!context || !name)
 155                 return NULL;
 156
 157         c = malloc(sizeof(command_t));
 158
 159         c->name = strdup(name);
 160         c->parent = parent;
 161         c->children = NULL;
 162         c->handler = handler;
 163         c->mode = mode;
 164         if (!help)
 165                 help="";
 166         c->next = NULL;
 167
 168         /* place command in tree */
 169         if (parent)
 170         {
 171                 if (parent->children)
 172                 {
 173                         /* find last child */
 174                         for (p = parent->children; p && p->next; p = p->next);
 175                         if (p)
 176                                 p->next = c;
 177                 }
 178                 else
 179                 {
 180                         parent->children = c;
 181                 }
 182         }
 183         else
 184         {
 185                 if (context->commands)
 186                 {
 187                         /* find last command */
 188                         for (p = context->commands; p && p->next; p = p->next);
 189                         if (p)
 190                                 p->next = c;
 191                 }
 192                 else
 193                 {
 194                         context->commands = c;
 195                 }
 196         }
 197
 198         /* just a placeholder, no handler */
 199         if (c->handler==NULL)
 200                 return c;
 201
 202         /* If this is a two level command, e.g. "flash banks", then the
 203          * "unknown" proc in startup.tcl must redirect to  this command.
 204          *
 205          * "flash banks" is translated by "unknown" to "flash_banks"
 206          * if such a proc exists
 207          */
 208         /* Print help for command */
 209         const char *t1="";
 210         const char *t2="";
 211         const char *t3="";
 212         /* maximum of two levels :-) */
 213         if (c->parent!=NULL)
 214         {
 215                 t1=c->parent->name;
 216                 t2="_";
 217         }
 218         t3=c->name;
 219         const char *full_name=alloc_printf("ocd_%s%s%s", t1, t2, t3);
 220         Jim_CreateCommand(interp, full_name, script_command, c, NULL);
 221         free((void *)full_name);
 222
 223         /* we now need to add an overrideable proc */
 224         const char *override_name=alloc_printf("proc %s%s%s {args} {if {[catch {eval \"ocd_%s%s%s $args\"}]==0} {return \"\"} else { return -code error }", t1, t2, t3, t1, t2, t3);
 225         Jim_Eval_Named(interp, override_name, __FILE__, __LINE__ );
 226         free((void *)override_name);
 227
 228         /* accumulate help text in Tcl helptext list.  */
 229     Jim_Obj *helptext=Jim_GetGlobalVariableStr(interp, "ocd_helptext", JIM_ERRMSG);
 230     if (Jim_IsShared(helptext))
 231         helptext = Jim_DuplicateObj(interp, helptext);
 232         Jim_Obj *cmd_entry=Jim_NewListObj(interp, NULL, 0);
 233
 234         Jim_Obj *cmd_list=Jim_NewListObj(interp, NULL, 0);
 235
 236         /* maximum of two levels :-) */
 237         if (c->parent!=NULL)
 238         {
 239                 Jim_ListAppendElement(interp, cmd_list, Jim_NewStringObj(interp, c->parent->name, -1));
 240         }
 241         Jim_ListAppendElement(interp, cmd_list, Jim_NewStringObj(interp, c->name, -1));
 242
 243         Jim_ListAppendElement(interp, cmd_entry, cmd_list);
 244         Jim_ListAppendElement(interp, cmd_entry, Jim_NewStringObj(interp, help, -1));
 245         Jim_ListAppendElement(interp, helptext, cmd_entry);
 246         return c;
 247 }
 248
 249 int unregister_all_commands(command_context_t *context)
 250 {
 251         command_t *c, *c2;
 252
 253         if (context == NULL)
 254                 return ERROR_OK;
 255
 256         while(NULL != context->commands)
 257         {
 258                 c = context->commands;
 259
 260                 while(NULL != c->children)
 261                 {
 262                         c2 = c->children;
 263                         c->children = c->children->next;
 264                         free(c2->name);
 265                         c2->name = NULL;
 266                         free(c2);
 267                         c2 = NULL;
 268                 }
 269
 270                 context->commands = context->commands->next;
 271
 272                 free(c->name);
 273                 c->name = NULL;
 274                 free(c);
 275                 c = NULL;
 276         }
 277
 278         return ERROR_OK;
 279 }
 280
 281 int unregister_command(command_context_t *context, char *name)
 282 {
 283         command_t *c, *p = NULL, *c2;
 284
 285         if ((!context) || (!name))
 286                 return ERROR_INVALID_ARGUMENTS;
 287
 288         /* find command */
 289         for (c = context->commands; c; c = c->next)
 290         {
 291                 if (strcmp(name, c->name) == 0)
 292                 {
 293                         /* unlink command */
 294                         if (p)
 295                         {
 296                                 p->next = c->next;
 297                         }
 298                         else
 299                         {
 300                                 context->commands = c->next;
 301                         }
 302
 303                         /* unregister children */
 304                         if (c->children)
 305                         {
 306                                 for (c2 = c->children; c2; c2 = c2->next)
 307                                 {
 308                                         free(c2->name);
 309                                         free(c2);
 310                                 }
 311                         }
 312
 313                         /* delete command */
 314                         free(c->name);
 315                         free(c);
 316                 }
 317
 318                 /* remember the last command for unlinking */
 319                 p = c;
 320         }
 321
 322         return ERROR_OK;
 323 }
 324
 325 void command_output_text(command_context_t *context, const char *data)
 326 {
 327         if( context && context->output_handler && data  ){
 328                 context->output_handler( context, data );
 329         }
 330 }
 331
 332 void command_print_n(command_context_t *context, char *format, ...)
 333 {
 334         char *string;
 335
 336         va_list ap;
 337         va_start(ap, format);
 338
 339         string = alloc_vprintf(format, ap);
 340         if (string != NULL)
 341         {
 342                 /* we want this collected in the log + we also want to pick it up as a tcl return
 343                  * value.
 344                  *
 345                  * The latter bit isn't precisely neat, but will do for now.
 346                  */
 347                 LOG_USER_N("%s", string);
 348                 // We already printed it above
 349                 //command_output_text(context, string);
 350                 free(string);
 351         }
 352
 353         va_end(ap);
 354 }
 355
 356 void command_print(command_context_t *context, char *format, ...)
 357 {
 358         char *string;
 359
 360         va_list ap;
 361         va_start(ap, format);
 362
 363         string = alloc_vprintf(format, ap);
 364         if (string != NULL)
 365         {
 366                 strcat(string, "\n"); /* alloc_vprintf guaranteed the buffer to be at least one char longer */
 367                 /* we want this collected in the log + we also want to pick it up as a tcl return
 368                  * value.
 369                  *
 370                  * The latter bit isn't precisely neat, but will do for now.
 371                  */
 372                 LOG_USER_N("%s", string);
 373                 // We already printed it above
 374                 //command_output_text(context, string);
 375                 free(string);
 376         }
 377
 378         va_end(ap);
 379 }
 380
 381 int run_command(command_context_t *context, command_t *c, char *words[], int num_words)
 382 {
 383         int start_word=0;
 384         if (!((context->mode == COMMAND_CONFIG) || (c->mode == COMMAND_ANY) || (c->mode == context->mode) ))
 385         {
 386                 /* Config commands can not run after the config stage */
 387                 LOG_ERROR("Illegal mode for command");
 388                 return ERROR_FAIL;
 389         }
 390
 391         int retval = c->handler(context, c->name, words + start_word + 1, num_words - start_word - 1);
 392         if (retval == ERROR_COMMAND_SYNTAX_ERROR)
 393         {
 394                 /* Print help for command */
 395                 const char *t1="";
 396                 const char *t2="";
 397                 const char *t3="";
 398                 /* maximum of two levels :-) */
 399                 if (c->parent!=NULL)
 400                 {
 401                         t1=c->parent->name;
 402                         t2=" ";
 403                 }
 404                 t3=c->name;
 405                 command_run_linef(context, "help {%s%s%s}", t1, t2, t3);
 406         }
 407         else if (retval == ERROR_COMMAND_CLOSE_CONNECTION)
 408         {
 409                 /* just fall through for a shutdown request */
 410         }
 411         else if (retval != ERROR_OK)
 412         {
 413                 /* we do not print out an error message because the command *should*
 414                  * have printed out an error
 415                  */
 416                 LOG_DEBUG("Command failed with error code %d", retval);
 417         }
 418
 419         return retval;
 420 }
 421
 422 int command_run_line(command_context_t *context, char *line)
 423 {
 424         /* all the parent commands have been registered with the interpreter
 425          * so, can just evaluate the line as a script and check for
 426          * results
 427          */
 428         /* run the line thru a script engine */
 429         int retval=ERROR_FAIL;
 430         int retcode;
 431         /* Beware! This code needs to be reentrant. It is also possible
 432          * for OpenOCD commands to be invoked directly from Tcl. This would
 433          * happen when the Jim Tcl interpreter is provided by eCos for
 434          * instance.
 435          */
 436         Jim_DeleteAssocData(interp, "context");
 437         retcode = Jim_SetAssocData(interp, "context", NULL, context);
 438         if (retcode == JIM_OK)
 439         {
 440                 /* associated the return value */
 441                 Jim_DeleteAssocData(interp, "retval");
 442                 retcode = Jim_SetAssocData(interp, "retval", NULL, &retval);
 443                 if (retcode == JIM_OK)
 444                 {
 445                         retcode = Jim_Eval_Named(interp, line, __FILE__, __LINE__ );
 446
 447                         Jim_DeleteAssocData(interp, "retval");
 448                 }
 449                 Jim_DeleteAssocData(interp, "context");
 450         }
 451         if (retcode == JIM_ERR) {
 452                 if (retval!=ERROR_COMMAND_CLOSE_CONNECTION)
 453                 {
 454                         /* We do not print the connection closed error message */
 455                         Jim_PrintErrorMessage(interp);
 456                 }
 457                 if (retval==ERROR_OK)
 458                 {
 459                         /* It wasn't a low level OpenOCD command that failed */
 460                         return ERROR_FAIL;
 461                 }
 462                 return retval;
 463         } else if (retcode == JIM_EXIT) {
 464                 /* ignore. */
 465                 /* exit(Jim_GetExitCode(interp)); */
 466         } else {
 467                 const char *result;
 468                 int reslen;
 469
 470                 result = Jim_GetString(Jim_GetResult(interp), &reslen);
 471                 if (reslen) {
 472                         int i;
 473                         char buff[256+1];
 474                         for (i = 0; i < reslen; i += 256)
 475                         {
 476                                 int chunk;
 477                                 chunk = reslen - i;
 478                                 if (chunk > 256)
 479                                         chunk = 256;
 480                                 strncpy(buff, result+i, chunk);
 481                                 buff[chunk] = 0;
 482                                 LOG_USER_N("%s", buff);
 483                         }
 484                         LOG_USER_N("%s", "\n");
 485                 }
 486         }
 487         return retval;
 488 }
 489
 490 int command_run_linef(command_context_t *context, char *format, ...)
 491 {
 492         int retval=ERROR_FAIL;
 493         char *string;
 494         va_list ap;
 495         va_start(ap, format);
 496         string = alloc_vprintf(format, ap);
 497         if (string!=NULL)
 498         {
 499                 retval=command_run_line(context, string);
 500         }
 501         va_end(ap);
 502         return retval;
 503 }
 504
 505 void command_set_output_handler(command_context_t* context, int (*output_handler)(struct command_context_s *context, const char* line), void *priv)
 506 {
 507         context->output_handler = output_handler;
 508         context->output_handler_priv = priv;
 509 }
 510
 511 command_context_t* copy_command_context(command_context_t* context)
 512 {
 513         command_context_t* copy_context = malloc(sizeof(command_context_t));
 514
 515         *copy_context = *context;
 516
 517         return copy_context;
 518 }
 519
 520 int command_done(command_context_t *context)
 521 {
 522         free(context);
 523         context = NULL;
 524
 525         return ERROR_OK;
 526 }
 527
 528 /* find full path to file */
 529 static int jim_find(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 530 {
 531         if (argc != 2)
 532                 return JIM_ERR;
 533         const char *file = Jim_GetString(argv[1], NULL);
 534         char *full_path = find_file(file);
 535         if (full_path == NULL)
 536                 return JIM_ERR;
 537         Jim_Obj *result = Jim_NewStringObj(interp, full_path, strlen(full_path));
 538         free(full_path);
 539
 540         Jim_SetResult(interp, result);
 541         return JIM_OK;
 542 }
 543
 544 static int jim_echo(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 545 {
 546         if (argc != 2)
 547                 return JIM_ERR;
 548         const char *str = Jim_GetString(argv[1], NULL);
 549         LOG_USER("%s", str);
 550         return JIM_OK;
 551 }
 552
 553 static size_t openocd_jim_fwrite(const void *_ptr, size_t size, size_t n, void *cookie)
 554 {
 555         size_t nbytes;
 556         const char *ptr;
 557         Jim_Interp *interp;
 558
 559         /* make it a char easier to read code */
 560         ptr = _ptr;
 561         interp = cookie;
 562         nbytes = size * n;
 563         if (ptr == NULL || interp == NULL || nbytes == 0) {
 564                 return 0;
 565         }
 566
 567         /* do we have to chunk it? */
 568         if (ptr[nbytes] == 0)
 569         {
 570                 /* no it is a C style string */
 571                 LOG_USER_N("%s", ptr);
 572                 return strlen(ptr);
 573         }
 574         /* GRR we must chunk - not null terminated */
 575         while (nbytes) {
 576                 char chunk[128+1];
 577                 int x;
 578
 579                 x = nbytes;
 580                 if (x > 128) {
 581                         x = 128;
 582                 }
 583                 /* copy it */
 584                 memcpy(chunk, ptr, x);
 585                 /* terminate it */
 586                 chunk[n] = 0;
 587                 /* output it */
 588                 LOG_USER_N("%s", chunk);
 589                 ptr += x;
 590                 nbytes -= x;
 591         }
 592
 593         return n;
 594 }
 595
 596 static size_t openocd_jim_fread(void *ptr, size_t size, size_t n, void *cookie)
 597 {
 598         /* TCL wants to read... tell him no */
 599         return 0;
 600 }
 601
 602 static int openocd_jim_vfprintf(void *cookie, const char *fmt, va_list ap)
 603 {
 604         char *cp;
 605         int n;
 606         Jim_Interp *interp;
 607
 608         n = -1;
 609         interp = cookie;
 610         if (interp == NULL)
 611                 return n;
 612
 613         cp = alloc_vprintf(fmt, ap);
 614         if (cp)
 615         {
 616                 LOG_USER_N("%s", cp);
 617                 n = strlen(cp);
 618                 free(cp);
 619         }
 620         return n;
 621 }
 622
 623 static int openocd_jim_fflush(void *cookie)
 624 {
 625         /* nothing to flush */
 626         return 0;
 627 }
 628
 629 static char* openocd_jim_fgets(char *s, int size, void *cookie)
 630 {
 631         /* not supported */
 632         errno = ENOTSUP;
 633         return NULL;
 634 }
 635
 636
 637 static int jim_capture(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 638 {
 639         if (argc != 2)
 640                 return JIM_ERR;
 641         int retcode;
 642         const char *str = Jim_GetString(argv[1], NULL);
 643
 644         /* capture log output and return it */
 645         Jim_Obj *tclOutput = Jim_NewStringObj(interp, "", 0);
 646         /* a garbage collect can happen, so we need a reference count to this object */
 647         Jim_IncrRefCount(tclOutput);
 648
 649         log_add_callback(tcl_output, tclOutput);
 650
 651         retcode = Jim_Eval_Named(interp, str, __FILE__, __LINE__ );
 652
 653         log_remove_callback(tcl_output, tclOutput);
 654
 655         /* We dump output into this local variable */
 656         Jim_SetResult(interp, tclOutput);
 657         Jim_DecrRefCount(interp, tclOutput);
 658
 659         return retcode;
 660 }
 661
 662 command_context_t* command_init()
 663 {
 664         command_context_t* context = malloc(sizeof(command_context_t));
 665         extern const char startup_tcl[];
 666
 667         context->mode = COMMAND_EXEC;
 668         context->commands = NULL;
 669         context->current_target = 0;
 670         context->output_handler = NULL;
 671         context->output_handler_priv = NULL;
 672
 673 #ifdef JIM_EMBEDDED
 674         Jim_InitEmbedded();
 675         /* Create an interpreter */
 676         interp = Jim_CreateInterp();
 677         /* Add all the Jim core commands */
 678         Jim_RegisterCoreCommands(interp);
 679 #endif
 680
 681         Jim_CreateCommand(interp, "ocd_find", jim_find, NULL, NULL);
 682         Jim_CreateCommand(interp, "echo", jim_echo, NULL, NULL);
 683         Jim_CreateCommand(interp, "capture", jim_capture, NULL, NULL);
 684
 685         /* Set Jim's STDIO */
 686         interp->cookie_stdin = interp;
 687         interp->cookie_stdout = interp;
 688         interp->cookie_stderr = interp;
 689         interp->cb_fwrite = openocd_jim_fwrite;
 690         interp->cb_fread = openocd_jim_fread ;
 691         interp->cb_vfprintf = openocd_jim_vfprintf;
 692         interp->cb_fflush = openocd_jim_fflush;
 693         interp->cb_fgets = openocd_jim_fgets;
 694
 695         add_default_dirs();
 696
 697 #ifdef JIM_EMBEDDED
 698         Jim_EventLoopOnLoad(interp);
 699 #endif
 700         if (Jim_Eval_Named(interp, startup_tcl, "embedded:startup.tcl",1)==JIM_ERR)
 701         {
 702                 LOG_ERROR("Failed to run startup.tcl (embedded into OpenOCD compile time)");
 703                 Jim_PrintErrorMessage(interp);
 704                 exit(-1);
 705         }
 706
 707         register_command(context, NULL, "sleep", handle_sleep_command,
 708                                          COMMAND_ANY, "<n> [busy] - sleep for n milliseconds. \"busy\" means busy wait");
 709
 710         register_command(context, NULL, "fast", handle_fast_command,
 711                                          COMMAND_ANY, "fast <enable/disable> - place at beginning of config files. Sets defaults to fast and dangerous.");
 712
 713         return context;
 714 }
 715
 716 int command_context_mode(command_context_t *cmd_ctx, enum command_mode mode)
 717 {
 718         if (!cmd_ctx)
 719                 return ERROR_INVALID_ARGUMENTS;
 720
 721         cmd_ctx->mode = mode;
 722         return ERROR_OK;
 723 }
 724
 725 /* sleep command sleeps for <n> miliseconds
 726  * this is useful in target startup scripts
 727  */
 728 int handle_sleep_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 729 {
 730         unsigned long duration = 0;
 731         int busy = 0;
 732
 733         if (argc==1)
 734         {
 735
 736         } else if (argc==2)
 737         {
 738                 if (strcmp(args[1], "busy")!=0)
 739                         return ERROR_COMMAND_SYNTAX_ERROR;
 740                 busy = 1;
 741         } else
 742         {
 743                 return ERROR_COMMAND_SYNTAX_ERROR;
 744         }
 745
 746         duration = strtoul(args[0], NULL, 0);
 747
 748         if (busy)
 749         {
 750                 busy_sleep(duration);
 751         } else
 752         {
 753                 long long then=timeval_ms();
 754                 while ((timeval_ms()-then)<duration)
 755                 {
 756                         target_call_timer_callbacks_now();
 757                         usleep(1000);
 758                 }
 759         }
 760
 761         return ERROR_OK;
 762 }
 763
 764 int handle_fast_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 765 {
 766         if (argc!=1)
 767                 return ERROR_COMMAND_SYNTAX_ERROR;
 768
 769         fast_and_dangerous = strcmp("enable", args[0])==0;
 770
 771         return ERROR_OK;
 772 }
 773
 774 void process_jim_events(void)
 775 {
 776 #ifdef JIM_EMBEDDED
 777         static int recursion = 0;
 778
 779         if (!recursion)
 780         {
 781                 recursion++;
 782                 Jim_ProcessEvents (interp, JIM_ALL_EVENTS|JIM_DONT_WAIT);
 783                 recursion--;
 784         }
 785 #endif
 786 }
 787
 788 void register_jim(struct command_context_s *cmd_ctx, const char *name, int (*cmd)(Jim_Interp *interp, int argc, Jim_Obj *const *argv), const char *help)
 789 {
 790         Jim_CreateCommand(interp, name, cmd, NULL, NULL);
 791
 792         /* FIX!!! it would be prettier to invoke add_help_text...
 793            accumulate help text in Tcl helptext list.  */
 794         Jim_Obj *helptext=Jim_GetGlobalVariableStr(interp, "ocd_helptext", JIM_ERRMSG);
 795         if (Jim_IsShared(helptext))
 796                 helptext = Jim_DuplicateObj(interp, helptext);
 797
 798         Jim_Obj *cmd_entry=Jim_NewListObj(interp, NULL, 0);
 799
 800         Jim_Obj *cmd_list=Jim_NewListObj(interp, NULL, 0);
 801         Jim_ListAppendElement(interp, cmd_list, Jim_NewStringObj(interp, name, -1));
 802
 803         Jim_ListAppendElement(interp, cmd_entry, cmd_list);
 804         Jim_ListAppendElement(interp, cmd_entry, Jim_NewStringObj(interp, help, -1));
 805         Jim_ListAppendElement(interp, helptext, cmd_entry);
 806 }
 807
 808
 809 /* return global variable long value or 0 upon failure */
 810 long jim_global_long(const char *variable)
 811 {
 812         Jim_Obj *objPtr=Jim_GetGlobalVariableStr(interp, variable, JIM_ERRMSG);
 813         long t;
 814         if (Jim_GetLong(interp, objPtr, &t)==JIM_OK)
 815         {
 816                 return t;
 817         }
 818         return 0;
 819 }