drivers/acpi/acpica/psloop.c

   1 /******************************************************************************
   2  *
   3  * Module Name: psloop - Main AML parse loop
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2017, Intel Corp.
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions, and the following disclaimer,
  16  *    without modification.
  17  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  18  *    substantially similar to the "NO WARRANTY" disclaimer below
  19  *    ("Disclaimer") and any redistribution must be conditioned upon
  20  *    including a substantially similar Disclaimer requirement for further
  21  *    binary redistribution.
  22  * 3. Neither the names of the above-listed copyright holders nor the names
  23  *    of any contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * Alternatively, this software may be distributed under the terms of the
  27  * GNU General Public License ("GPL") version 2 as published by the Free
  28  * Software Foundation.
  29  *
  30  * NO WARRANTY
  31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  35  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  40  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  41  * POSSIBILITY OF SUCH DAMAGES.
  42  */
  43
  44 /*
  45  * Parse the AML and build an operation tree as most interpreters, (such as
  46  * Perl) do. Parsing is done by hand rather than with a YACC generated parser
  47  * to tightly constrain stack and dynamic memory usage. Parsing is kept
  48  * flexible and the code fairly compact by parsing based on a list of AML
  49  * opcode templates in aml_op_info[].
  50  */
  51
  52 #include <acpi/acpi.h>
  53 #include "accommon.h"
  54 #include "acinterp.h"
  55 #include "acparser.h"
  56 #include "acdispat.h"
  57 #include "amlcode.h"
  58 #include "acconvert.h"
  59
  60 #define _COMPONENT          ACPI_PARSER
  61 ACPI_MODULE_NAME("psloop")
  62
  63 /* Local prototypes */
  64 static acpi_status
  65 acpi_ps_get_arguments(struct acpi_walk_state *walk_state,
  66                       u8 * aml_op_start, union acpi_parse_object *op);
  67
  68 static void
  69 acpi_ps_link_module_code(union acpi_parse_object *parent_op,
  70                          u8 *aml_start, u32 aml_length, acpi_owner_id owner_id);
  71
  72 /*******************************************************************************
  73  *
  74  * FUNCTION:    acpi_ps_get_arguments
  75  *
  76  * PARAMETERS:  walk_state          - Current state
  77  *              aml_op_start        - Op start in AML
  78  *              op                  - Current Op
  79  *
  80  * RETURN:      Status
  81  *
  82  * DESCRIPTION: Get arguments for passed Op.
  83  *
  84  ******************************************************************************/
  85
  86 static acpi_status
  87 acpi_ps_get_arguments(struct acpi_walk_state *walk_state,
  88                       u8 * aml_op_start, union acpi_parse_object *op)
  89 {
  90         acpi_status status = AE_OK;
  91         union acpi_parse_object *arg = NULL;
  92         const struct acpi_opcode_info *op_info;
  93
  94         ACPI_FUNCTION_TRACE_PTR(ps_get_arguments, walk_state);
  95
  96         ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
  97                           "Get arguments for opcode [%s]\n",
  98                           op->common.aml_op_name));
  99
 100         switch (op->common.aml_opcode) {
 101         case AML_BYTE_OP:       /* AML_BYTEDATA_ARG */
 102         case AML_WORD_OP:       /* AML_WORDDATA_ARG */
 103         case AML_DWORD_OP:      /* AML_DWORDATA_ARG */
 104         case AML_QWORD_OP:      /* AML_QWORDATA_ARG */
 105         case AML_STRING_OP:     /* AML_ASCIICHARLIST_ARG */
 106
 107                 /* Fill in constant or string argument directly */
 108
 109                 acpi_ps_get_next_simple_arg(&(walk_state->parser_state),
 110                                             GET_CURRENT_ARG_TYPE(walk_state->
 111                                                                  arg_types),
 112                                             op);
 113                 break;
 114
 115         case AML_INT_NAMEPATH_OP:       /* AML_NAMESTRING_ARG */
 116
 117                 status = acpi_ps_get_next_namepath(walk_state,
 118                                                    &(walk_state->parser_state),
 119                                                    op,
 120                                                    ACPI_POSSIBLE_METHOD_CALL);
 121                 if (ACPI_FAILURE(status)) {
 122                         return_ACPI_STATUS(status);
 123                 }
 124
 125                 walk_state->arg_types = 0;
 126                 break;
 127
 128         default:
 129                 /*
 130                  * Op is not a constant or string, append each argument to the Op
 131                  */
 132                 while (GET_CURRENT_ARG_TYPE(walk_state->arg_types) &&
 133                        !walk_state->arg_count) {
 134                         walk_state->aml = walk_state->parser_state.aml;
 135
 136                         switch (op->common.aml_opcode) {
 137                         case AML_METHOD_OP:
 138                         case AML_BUFFER_OP:
 139                         case AML_PACKAGE_OP:
 140                         case AML_VARIABLE_PACKAGE_OP:
 141                         case AML_WHILE_OP:
 142
 143                                 break;
 144
 145                         default:
 146
 147                                 ASL_CV_CAPTURE_COMMENTS(walk_state);
 148                                 break;
 149                         }
 150
 151                         status =
 152                             acpi_ps_get_next_arg(walk_state,
 153                                                  &(walk_state->parser_state),
 154                                                  GET_CURRENT_ARG_TYPE
 155                                                  (walk_state->arg_types), &arg);
 156                         if (ACPI_FAILURE(status)) {
 157                                 return_ACPI_STATUS(status);
 158                         }
 159
 160                         if (arg) {
 161                                 acpi_ps_append_arg(op, arg);
 162                         }
 163
 164                         INCREMENT_ARG_LIST(walk_state->arg_types);
 165                 }
 166
 167                 /*
 168                  * Handle executable code at "module-level". This refers to
 169                  * executable opcodes that appear outside of any control method.
 170                  */
 171                 if ((walk_state->pass_number <= ACPI_IMODE_LOAD_PASS2) &&
 172                     ((walk_state->parse_flags & ACPI_PARSE_DISASSEMBLE) == 0)) {
 173                         /*
 174                          * We want to skip If/Else/While constructs during Pass1 because we
 175                          * want to actually conditionally execute the code during Pass2.
 176                          *
 177                          * Except for disassembly, where we always want to walk the
 178                          * If/Else/While packages
 179                          */
 180                         switch (op->common.aml_opcode) {
 181                         case AML_IF_OP:
 182                         case AML_ELSE_OP:
 183                         case AML_WHILE_OP:
 184                                 /*
 185                                  * Currently supported module-level opcodes are:
 186                                  * IF/ELSE/WHILE. These appear to be the most common,
 187                                  * and easiest to support since they open an AML
 188                                  * package.
 189                                  */
 190                                 if (walk_state->pass_number ==
 191                                     ACPI_IMODE_LOAD_PASS1) {
 192                                         acpi_ps_link_module_code(op->common.
 193                                                                  parent,
 194                                                                  aml_op_start,
 195                                                                  (u32)
 196                                                                  (walk_state->
 197                                                                  parser_state.
 198                                                                  pkg_end -
 199                                                                  aml_op_start),
 200                                                                  walk_state->
 201                                                                  owner_id);
 202                                 }
 203
 204                                 ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
 205                                                   "Pass1: Skipping an If/Else/While body\n"));
 206
 207                                 /* Skip body of if/else/while in pass 1 */
 208
 209                                 walk_state->parser_state.aml =
 210                                     walk_state->parser_state.pkg_end;
 211                                 walk_state->arg_count = 0;
 212                                 break;
 213
 214                         default:
 215                                 /*
 216                                  * Check for an unsupported executable opcode at module
 217                                  * level. We must be in PASS1, the parent must be a SCOPE,
 218                                  * The opcode class must be EXECUTE, and the opcode must
 219                                  * not be an argument to another opcode.
 220                                  */
 221                                 if ((walk_state->pass_number ==
 222                                      ACPI_IMODE_LOAD_PASS1)
 223                                     && (op->common.parent->common.aml_opcode ==
 224                                         AML_SCOPE_OP)) {
 225                                         op_info =
 226                                             acpi_ps_get_opcode_info(op->common.
 227                                                                     aml_opcode);
 228                                         if ((op_info->class ==
 229                                              AML_CLASS_EXECUTE) && (!arg)) {
 230                                                 ACPI_WARNING((AE_INFO,
 231                                                               "Unsupported module-level executable opcode "
 232                                                               "0x%.2X at table offset 0x%.4X",
 233                                                               op->common.
 234                                                               aml_opcode,
 235                                                               (u32)
 236                                                               (ACPI_PTR_DIFF
 237                                                                (aml_op_start,
 238                                                                 walk_state->
 239                                                                 parser_state.
 240                                                                 aml_start) +
 241                                                                sizeof(struct
 242                                                                       acpi_table_header))));
 243                                         }
 244                                 }
 245                                 break;
 246                         }
 247                 }
 248
 249                 /* Special processing for certain opcodes */
 250
 251                 switch (op->common.aml_opcode) {
 252                 case AML_METHOD_OP:
 253                         /*
 254                          * Skip parsing of control method because we don't have enough
 255                          * info in the first pass to parse it correctly.
 256                          *
 257                          * Save the length and address of the body
 258                          */
 259                         op->named.data = walk_state->parser_state.aml;
 260                         op->named.length = (u32)
 261                             (walk_state->parser_state.pkg_end -
 262                              walk_state->parser_state.aml);
 263
 264                         /* Skip body of method */
 265
 266                         walk_state->parser_state.aml =
 267                             walk_state->parser_state.pkg_end;
 268                         walk_state->arg_count = 0;
 269                         break;
 270
 271                 case AML_BUFFER_OP:
 272                 case AML_PACKAGE_OP:
 273                 case AML_VARIABLE_PACKAGE_OP:
 274
 275                         if ((op->common.parent) &&
 276                             (op->common.parent->common.aml_opcode ==
 277                              AML_NAME_OP)
 278                             && (walk_state->pass_number <=
 279                                 ACPI_IMODE_LOAD_PASS2)) {
 280                                 /*
 281                                  * Skip parsing of Buffers and Packages because we don't have
 282                                  * enough info in the first pass to parse them correctly.
 283                                  */
 284                                 op->named.data = aml_op_start;
 285                                 op->named.length = (u32)
 286                                     (walk_state->parser_state.pkg_end -
 287                                      aml_op_start);
 288
 289                                 /* Skip body */
 290
 291                                 walk_state->parser_state.aml =
 292                                     walk_state->parser_state.pkg_end;
 293                                 walk_state->arg_count = 0;
 294                         }
 295                         break;
 296
 297                 case AML_WHILE_OP:
 298
 299                         if (walk_state->control_state) {
 300                                 walk_state->control_state->control.package_end =
 301                                     walk_state->parser_state.pkg_end;
 302                         }
 303                         break;
 304
 305                 default:
 306
 307                         /* No action for all other opcodes */
 308
 309                         break;
 310                 }
 311
 312                 break;
 313         }
 314
 315         return_ACPI_STATUS(AE_OK);
 316 }
 317
 318 /*******************************************************************************
 319  *
 320  * FUNCTION:    acpi_ps_link_module_code
 321  *
 322  * PARAMETERS:  parent_op           - Parent parser op
 323  *              aml_start           - Pointer to the AML
 324  *              aml_length          - Length of executable AML
 325  *              owner_id            - owner_id of module level code
 326  *
 327  * RETURN:      None.
 328  *
 329  * DESCRIPTION: Wrap the module-level code with a method object and link the
 330  *              object to the global list. Note, the mutex field of the method
 331  *              object is used to link multiple module-level code objects.
 332  *
 333  ******************************************************************************/
 334
 335 static void
 336 acpi_ps_link_module_code(union acpi_parse_object *parent_op,
 337                          u8 *aml_start, u32 aml_length, acpi_owner_id owner_id)
 338 {
 339         union acpi_operand_object *prev;
 340         union acpi_operand_object *next;
 341         union acpi_operand_object *method_obj;
 342         struct acpi_namespace_node *parent_node;
 343
 344         ACPI_FUNCTION_TRACE(ps_link_module_code);
 345
 346         /* Get the tail of the list */
 347
 348         prev = next = acpi_gbl_module_code_list;
 349         while (next) {
 350                 prev = next;
 351                 next = next->method.mutex;
 352         }
 353
 354         /*
 355          * Insert the module level code into the list. Merge it if it is
 356          * adjacent to the previous element.
 357          */
 358         if (!prev ||
 359             ((prev->method.aml_start + prev->method.aml_length) != aml_start)) {
 360
 361                 /* Create, initialize, and link a new temporary method object */
 362
 363                 method_obj = acpi_ut_create_internal_object(ACPI_TYPE_METHOD);
 364                 if (!method_obj) {
 365                         return_VOID;
 366                 }
 367
 368                 ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
 369                                   "Create/Link new code block: %p\n",
 370                                   method_obj));
 371
 372                 if (parent_op->common.node) {
 373                         parent_node = parent_op->common.node;
 374                 } else {
 375                         parent_node = acpi_gbl_root_node;
 376                 }
 377
 378                 method_obj->method.aml_start = aml_start;
 379                 method_obj->method.aml_length = aml_length;
 380                 method_obj->method.owner_id = owner_id;
 381                 method_obj->method.info_flags |= ACPI_METHOD_MODULE_LEVEL;
 382
 383                 /*
 384                  * Save the parent node in next_object. This is cheating, but we
 385                  * don't want to expand the method object.
 386                  */
 387                 method_obj->method.next_object =
 388                     ACPI_CAST_PTR(union acpi_operand_object, parent_node);
 389
 390                 if (!prev) {
 391                         acpi_gbl_module_code_list = method_obj;
 392                 } else {
 393                         prev->method.mutex = method_obj;
 394                 }
 395         } else {
 396                 ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
 397                                   "Appending to existing code block: %p\n",
 398                                   prev));
 399
 400                 prev->method.aml_length += aml_length;
 401         }
 402
 403         return_VOID;
 404 }
 405
 406 /*******************************************************************************
 407  *
 408  * FUNCTION:    acpi_ps_parse_loop
 409  *
 410  * PARAMETERS:  walk_state          - Current state
 411  *
 412  * RETURN:      Status
 413  *
 414  * DESCRIPTION: Parse AML (pointed to by the current parser state) and return
 415  *              a tree of ops.
 416  *
 417  ******************************************************************************/
 418
 419 acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state)
 420 {
 421         acpi_status status = AE_OK;
 422         union acpi_parse_object *op = NULL;     /* current op */
 423         struct acpi_parse_state *parser_state;
 424         u8 *aml_op_start = NULL;
 425
 426         ACPI_FUNCTION_TRACE_PTR(ps_parse_loop, walk_state);
 427
 428         if (walk_state->descending_callback == NULL) {
 429                 return_ACPI_STATUS(AE_BAD_PARAMETER);
 430         }
 431
 432         parser_state = &walk_state->parser_state;
 433         walk_state->arg_types = 0;
 434
 435 #if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY))
 436
 437         if (walk_state->walk_type & ACPI_WALK_METHOD_RESTART) {
 438
 439                 /* We are restarting a preempted control method */
 440
 441                 if (acpi_ps_has_completed_scope(parser_state)) {
 442                         /*
 443                          * We must check if a predicate to an IF or WHILE statement
 444                          * was just completed
 445                          */
 446                         if ((parser_state->scope->parse_scope.op) &&
 447                             ((parser_state->scope->parse_scope.op->common.
 448                               aml_opcode == AML_IF_OP)
 449                              || (parser_state->scope->parse_scope.op->common.
 450                                  aml_opcode == AML_WHILE_OP))
 451                             && (walk_state->control_state)
 452                             && (walk_state->control_state->common.state ==
 453                                 ACPI_CONTROL_PREDICATE_EXECUTING)) {
 454                                 /*
 455                                  * A predicate was just completed, get the value of the
 456                                  * predicate and branch based on that value
 457                                  */
 458                                 walk_state->op = NULL;
 459                                 status =
 460                                     acpi_ds_get_predicate_value(walk_state,
 461                                                                 ACPI_TO_POINTER
 462                                                                 (TRUE));
 463                                 if (ACPI_FAILURE(status)
 464                                     && ((status & AE_CODE_MASK) !=
 465                                         AE_CODE_CONTROL)) {
 466                                         if (status == AE_AML_NO_RETURN_VALUE) {
 467                                                 ACPI_EXCEPTION((AE_INFO, status,
 468                                                                 "Invoked method did not return a value"));
 469                                         }
 470
 471                                         ACPI_EXCEPTION((AE_INFO, status,
 472                                                         "GetPredicate Failed"));
 473                                         return_ACPI_STATUS(status);
 474                                 }
 475
 476                                 status =
 477                                     acpi_ps_next_parse_state(walk_state, op,
 478                                                              status);
 479                         }
 480
 481                         acpi_ps_pop_scope(parser_state, &op,
 482                                           &walk_state->arg_types,
 483                                           &walk_state->arg_count);
 484                         ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
 485                                           "Popped scope, Op=%p\n", op));
 486                 } else if (walk_state->prev_op) {
 487
 488                         /* We were in the middle of an op */
 489
 490                         op = walk_state->prev_op;
 491                         walk_state->arg_types = walk_state->prev_arg_types;
 492                 }
 493         }
 494 #endif
 495
 496         /* Iterative parsing loop, while there is more AML to process: */
 497
 498         while ((parser_state->aml < parser_state->aml_end) || (op)) {
 499                 ASL_CV_CAPTURE_COMMENTS(walk_state);
 500
 501                 aml_op_start = parser_state->aml;
 502                 if (!op) {
 503                         status =
 504                             acpi_ps_create_op(walk_state, aml_op_start, &op);
 505                         if (ACPI_FAILURE(status)) {
 506                                 if (status == AE_CTRL_PARSE_CONTINUE) {
 507                                         continue;
 508                                 }
 509
 510                                 if (status == AE_CTRL_PARSE_PENDING) {
 511                                         status = AE_OK;
 512                                 }
 513
 514                                 if (status == AE_CTRL_TERMINATE) {
 515                                         return_ACPI_STATUS(status);
 516                                 }
 517
 518                                 status =
 519                                     acpi_ps_complete_op(walk_state, &op,
 520                                                         status);
 521                                 if (ACPI_FAILURE(status)) {
 522                                         return_ACPI_STATUS(status);
 523                                 }
 524
 525                                 continue;
 526                         }
 527
 528                         acpi_ex_start_trace_opcode(op, walk_state);
 529                 }
 530
 531                 /*
 532                  * Start arg_count at zero because we don't know if there are
 533                  * any args yet
 534                  */
 535                 walk_state->arg_count = 0;
 536
 537                 switch (op->common.aml_opcode) {
 538                 case AML_BYTE_OP:
 539                 case AML_WORD_OP:
 540                 case AML_DWORD_OP:
 541                 case AML_QWORD_OP:
 542
 543                         break;
 544
 545                 default:
 546
 547                         ASL_CV_CAPTURE_COMMENTS(walk_state);
 548                         break;
 549                 }
 550
 551                 /* Are there any arguments that must be processed? */
 552
 553                 if (walk_state->arg_types) {
 554
 555                         /* Get arguments */
 556
 557                         status =
 558                             acpi_ps_get_arguments(walk_state, aml_op_start, op);
 559                         if (ACPI_FAILURE(status)) {
 560                                 status =
 561                                     acpi_ps_complete_op(walk_state, &op,
 562                                                         status);
 563                                 if (ACPI_FAILURE(status)) {
 564                                         return_ACPI_STATUS(status);
 565                                 }
 566
 567                                 continue;
 568                         }
 569                 }
 570
 571                 /* Check for arguments that need to be processed */
 572
 573                 if (walk_state->arg_count) {
 574                         /*
 575                          * There are arguments (complex ones), push Op and
 576                          * prepare for argument
 577                          */
 578                         status = acpi_ps_push_scope(parser_state, op,
 579                                                     walk_state->arg_types,
 580                                                     walk_state->arg_count);
 581                         if (ACPI_FAILURE(status)) {
 582                                 status =
 583                                     acpi_ps_complete_op(walk_state, &op,
 584                                                         status);
 585                                 if (ACPI_FAILURE(status)) {
 586                                         return_ACPI_STATUS(status);
 587                                 }
 588
 589                                 continue;
 590                         }
 591
 592                         op = NULL;
 593                         continue;
 594                 }
 595
 596                 /*
 597                  * All arguments have been processed -- Op is complete,
 598                  * prepare for next
 599                  */
 600                 walk_state->op_info =
 601                     acpi_ps_get_opcode_info(op->common.aml_opcode);
 602                 if (walk_state->op_info->flags & AML_NAMED) {
 603                         if (op->common.aml_opcode == AML_REGION_OP ||
 604                             op->common.aml_opcode == AML_DATA_REGION_OP) {
 605                                 /*
 606                                  * Skip parsing of control method or opregion body,
 607                                  * because we don't have enough info in the first pass
 608                                  * to parse them correctly.
 609                                  *
 610                                  * Completed parsing an op_region declaration, we now
 611                                  * know the length.
 612                                  */
 613                                 op->named.length =
 614                                     (u32) (parser_state->aml - op->named.data);
 615                         }
 616                 }
 617
 618                 if (walk_state->op_info->flags & AML_CREATE) {
 619                         /*
 620                          * Backup to beginning of create_XXXfield declaration (1 for
 621                          * Opcode)
 622                          *
 623                          * body_length is unknown until we parse the body
 624                          */
 625                         op->named.length =
 626                             (u32) (parser_state->aml - op->named.data);
 627                 }
 628
 629                 if (op->common.aml_opcode == AML_BANK_FIELD_OP) {
 630                         /*
 631                          * Backup to beginning of bank_field declaration
 632                          *
 633                          * body_length is unknown until we parse the body
 634                          */
 635                         op->named.length =
 636                             (u32) (parser_state->aml - op->named.data);
 637                 }
 638
 639                 /* This op complete, notify the dispatcher */
 640
 641                 if (walk_state->ascending_callback != NULL) {
 642                         walk_state->op = op;
 643                         walk_state->opcode = op->common.aml_opcode;
 644
 645                         status = walk_state->ascending_callback(walk_state);
 646                         status =
 647                             acpi_ps_next_parse_state(walk_state, op, status);
 648                         if (status == AE_CTRL_PENDING) {
 649                                 status = AE_OK;
 650                         }
 651                 }
 652
 653                 status = acpi_ps_complete_op(walk_state, &op, status);
 654                 if (ACPI_FAILURE(status)) {
 655                         return_ACPI_STATUS(status);
 656                 }
 657
 658         }                       /* while parser_state->Aml */
 659
 660         status = acpi_ps_complete_final_op(walk_state, op, status);
 661         return_ACPI_STATUS(status);
 662 }