utcopy.c revision 104470
1/****************************************************************************** 2 * 3 * Module Name: utcopy - Internal to external object translation utilities 4 * $Revision: 104 $ 5 * 6 *****************************************************************************/ 7 8/****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999 - 2002, Intel Corp. 13 * All rights reserved. 14 * 15 * 2. License 16 * 17 * 2.1. This is your license from Intel Corp. under its intellectual property 18 * rights. You may have additional license terms from the party that provided 19 * you this software, covering your right to use that party's intellectual 20 * property rights. 21 * 22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 23 * copy of the source code appearing in this file ("Covered Code") an 24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 25 * base code distributed originally by Intel ("Original Intel Code") to copy, 26 * make derivatives, distribute, use and display any portion of the Covered 27 * Code in any form, with the right to sublicense such rights; and 28 * 29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 30 * license (with the right to sublicense), under only those claims of Intel 31 * patents that are infringed by the Original Intel Code, to make, use, sell, 32 * offer to sell, and import the Covered Code and derivative works thereof 33 * solely to the minimum extent necessary to exercise the above copyright 34 * license, and in no event shall the patent license extend to any additions 35 * to or modifications of the Original Intel Code. No other license or right 36 * is granted directly or by implication, estoppel or otherwise; 37 * 38 * The above copyright and patent license is granted only if the following 39 * conditions are met: 40 * 41 * 3. Conditions 42 * 43 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 44 * Redistribution of source code of any substantial portion of the Covered 45 * Code or modification with rights to further distribute source must include 46 * the above Copyright Notice, the above License, this list of Conditions, 47 * and the following Disclaimer and Export Compliance provision. In addition, 48 * Licensee must cause all Covered Code to which Licensee contributes to 49 * contain a file documenting the changes Licensee made to create that Covered 50 * Code and the date of any change. Licensee must include in that file the 51 * documentation of any changes made by any predecessor Licensee. Licensee 52 * must include a prominent statement that the modification is derived, 53 * directly or indirectly, from Original Intel Code. 54 * 55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 56 * Redistribution of source code of any substantial portion of the Covered 57 * Code or modification without rights to further distribute source must 58 * include the following Disclaimer and Export Compliance provision in the 59 * documentation and/or other materials provided with distribution. In 60 * addition, Licensee may not authorize further sublicense of source of any 61 * portion of the Covered Code, and must include terms to the effect that the 62 * license from Licensee to its licensee is limited to the intellectual 63 * property embodied in the software Licensee provides to its licensee, and 64 * not to intellectual property embodied in modifications its licensee may 65 * make. 66 * 67 * 3.3. Redistribution of Executable. Redistribution in executable form of any 68 * substantial portion of the Covered Code or modification must reproduce the 69 * above Copyright Notice, and the following Disclaimer and Export Compliance 70 * provision in the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3.4. Intel retains all right, title, and interest in and to the Original 74 * Intel Code. 75 * 76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 77 * Intel shall be used in advertising or otherwise to promote the sale, use or 78 * other dealings in products derived from or relating to the Covered Code 79 * without prior written authorization from Intel. 80 * 81 * 4. Disclaimer and Export Compliance 82 * 83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 89 * PARTICULAR PURPOSE. 90 * 91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 98 * LIMITED REMEDY. 99 * 100 * 4.3. Licensee shall not export, either directly or indirectly, any of this 101 * software or system incorporating such software without first obtaining any 102 * required license or other approval from the U. S. Department of Commerce or 103 * any other agency or department of the United States Government. In the 104 * event Licensee exports any such software from the United States or 105 * re-exports any such software from a foreign destination, Licensee shall 106 * ensure that the distribution and export/re-export of the software is in 107 * compliance with all laws, regulations, orders, or other restrictions of the 108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 109 * any of its subsidiaries will export/re-export any technical data, process, 110 * software, or service, directly or indirectly, to any country for which the 111 * United States government or any agency thereof requires an export license, 112 * other governmental approval, or letter of assurance, without first obtaining 113 * such license, approval or letter. 114 * 115 *****************************************************************************/ 116 117#define __UTCOPY_C__ 118 119#include "acpi.h" 120#include "amlcode.h" 121 122 123#define _COMPONENT ACPI_UTILITIES 124 ACPI_MODULE_NAME ("utcopy") 125 126 127/******************************************************************************* 128 * 129 * FUNCTION: AcpiUtCopyIsimpleToEsimple 130 * 131 * PARAMETERS: *InternalObject - Pointer to the object we are examining 132 * *Buffer - Where the object is returned 133 * *SpaceUsed - Where the data length is returned 134 * 135 * RETURN: Status 136 * 137 * DESCRIPTION: This function is called to place a simple object in a user 138 * buffer. 139 * 140 * The buffer is assumed to have sufficient space for the object. 141 * 142 ******************************************************************************/ 143 144static ACPI_STATUS 145AcpiUtCopyIsimpleToEsimple ( 146 ACPI_OPERAND_OBJECT *InternalObject, 147 ACPI_OBJECT *ExternalObject, 148 UINT8 *DataSpace, 149 ACPI_SIZE *BufferSpaceUsed) 150{ 151 ACPI_STATUS Status = AE_OK; 152 153 154 ACPI_FUNCTION_TRACE ("UtCopyIsimpleToEsimple"); 155 156 157 *BufferSpaceUsed = 0; 158 159 /* 160 * Check for NULL object case (could be an uninitialized 161 * package element) 162 */ 163 if (!InternalObject) 164 { 165 return_ACPI_STATUS (AE_OK); 166 } 167 168 /* Always clear the external object */ 169 170 ACPI_MEMSET (ExternalObject, 0, sizeof (ACPI_OBJECT)); 171 172 /* 173 * In general, the external object will be the same type as 174 * the internal object 175 */ 176 ExternalObject->Type = ACPI_GET_OBJECT_TYPE (InternalObject); 177 178 /* However, only a limited number of external types are supported */ 179 180 switch (ACPI_GET_OBJECT_TYPE (InternalObject)) 181 { 182 case ACPI_TYPE_STRING: 183 184 ExternalObject->String.Pointer = (NATIVE_CHAR *) DataSpace; 185 ExternalObject->String.Length = InternalObject->String.Length; 186 *BufferSpaceUsed = ACPI_ROUND_UP_TO_NATIVE_WORD ((ACPI_SIZE) InternalObject->String.Length + 1); 187 188 ACPI_MEMCPY ((void *) DataSpace, (void *) InternalObject->String.Pointer, 189 (ACPI_SIZE) InternalObject->String.Length + 1); 190 break; 191 192 193 case ACPI_TYPE_BUFFER: 194 195 ExternalObject->Buffer.Pointer = DataSpace; 196 ExternalObject->Buffer.Length = InternalObject->Buffer.Length; 197 *BufferSpaceUsed = ACPI_ROUND_UP_TO_NATIVE_WORD (InternalObject->String.Length); 198 199 ACPI_MEMCPY ((void *) DataSpace, (void *) InternalObject->Buffer.Pointer, 200 InternalObject->Buffer.Length); 201 break; 202 203 204 case ACPI_TYPE_INTEGER: 205 206 ExternalObject->Integer.Value = InternalObject->Integer.Value; 207 break; 208 209 210 case INTERNAL_TYPE_REFERENCE: 211 212 /* 213 * This is an object reference. Attempt to dereference it. 214 */ 215 switch (InternalObject->Reference.Opcode) 216 { 217 case AML_INT_NAMEPATH_OP: 218 219 /* For namepath, return the object handle ("reference") */ 220 221 default: 222 /* 223 * Use the object type of "Any" to indicate a reference 224 * to object containing a handle to an ACPI named object. 225 */ 226 ExternalObject->Type = ACPI_TYPE_ANY; 227 ExternalObject->Reference.Handle = InternalObject->Reference.Node; 228 break; 229 } 230 break; 231 232 233 case ACPI_TYPE_PROCESSOR: 234 235 ExternalObject->Processor.ProcId = InternalObject->Processor.ProcId; 236 ExternalObject->Processor.PblkAddress = InternalObject->Processor.Address; 237 ExternalObject->Processor.PblkLength = InternalObject->Processor.Length; 238 break; 239 240 241 case ACPI_TYPE_POWER: 242 243 ExternalObject->PowerResource.SystemLevel = 244 InternalObject->PowerResource.SystemLevel; 245 246 ExternalObject->PowerResource.ResourceOrder = 247 InternalObject->PowerResource.ResourceOrder; 248 break; 249 250 251 default: 252 /* 253 * There is no corresponding external object type 254 */ 255 return_ACPI_STATUS (AE_SUPPORT); 256 } 257 258 return_ACPI_STATUS (Status); 259} 260 261 262/******************************************************************************* 263 * 264 * FUNCTION: AcpiUtCopyIelementToEelement 265 * 266 * PARAMETERS: ACPI_PKG_CALLBACK 267 * 268 * RETURN: Status 269 * 270 * DESCRIPTION: Copy one package element to another package element 271 * 272 ******************************************************************************/ 273 274ACPI_STATUS 275AcpiUtCopyIelementToEelement ( 276 UINT8 ObjectType, 277 ACPI_OPERAND_OBJECT *SourceObject, 278 ACPI_GENERIC_STATE *State, 279 void *Context) 280{ 281 ACPI_STATUS Status = AE_OK; 282 ACPI_PKG_INFO *Info = (ACPI_PKG_INFO *) Context; 283 ACPI_SIZE ObjectSpace; 284 UINT32 ThisIndex; 285 ACPI_OBJECT *TargetObject; 286 287 288 ACPI_FUNCTION_ENTRY (); 289 290 291 ThisIndex = State->Pkg.Index; 292 TargetObject = (ACPI_OBJECT *) 293 &((ACPI_OBJECT *)(State->Pkg.DestObject))->Package.Elements[ThisIndex]; 294 295 switch (ObjectType) 296 { 297 case ACPI_COPY_TYPE_SIMPLE: 298 299 /* 300 * This is a simple or null object 301 */ 302 Status = AcpiUtCopyIsimpleToEsimple (SourceObject, 303 TargetObject, Info->FreeSpace, &ObjectSpace); 304 if (ACPI_FAILURE (Status)) 305 { 306 return (Status); 307 } 308 break; 309 310 311 case ACPI_COPY_TYPE_PACKAGE: 312 313 /* 314 * Build the package object 315 */ 316 TargetObject->Type = ACPI_TYPE_PACKAGE; 317 TargetObject->Package.Count = SourceObject->Package.Count; 318 TargetObject->Package.Elements = ACPI_CAST_PTR (ACPI_OBJECT, Info->FreeSpace); 319 320 /* 321 * Pass the new package object back to the package walk routine 322 */ 323 State->Pkg.ThisTargetObj = TargetObject; 324 325 /* 326 * Save space for the array of objects (Package elements) 327 * update the buffer length counter 328 */ 329 ObjectSpace = ACPI_ROUND_UP_TO_NATIVE_WORD ( 330 (ACPI_SIZE) TargetObject->Package.Count * sizeof (ACPI_OBJECT)); 331 break; 332 333 334 default: 335 return (AE_BAD_PARAMETER); 336 } 337 338 Info->FreeSpace += ObjectSpace; 339 Info->Length += ObjectSpace; 340 return (Status); 341} 342 343 344/******************************************************************************* 345 * 346 * FUNCTION: AcpiUtCopyIpackageToEpackage 347 * 348 * PARAMETERS: *InternalObject - Pointer to the object we are returning 349 * *Buffer - Where the object is returned 350 * *SpaceUsed - Where the object length is returned 351 * 352 * RETURN: Status 353 * 354 * DESCRIPTION: This function is called to place a package object in a user 355 * buffer. A package object by definition contains other objects. 356 * 357 * The buffer is assumed to have sufficient space for the object. 358 * The caller must have verified the buffer length needed using the 359 * AcpiUtGetObjectSize function before calling this function. 360 * 361 ******************************************************************************/ 362 363static ACPI_STATUS 364AcpiUtCopyIpackageToEpackage ( 365 ACPI_OPERAND_OBJECT *InternalObject, 366 UINT8 *Buffer, 367 ACPI_SIZE *SpaceUsed) 368{ 369 ACPI_OBJECT *ExternalObject; 370 ACPI_STATUS Status; 371 ACPI_PKG_INFO Info; 372 373 374 ACPI_FUNCTION_TRACE ("UtCopyIpackageToEpackage"); 375 376 377 /* 378 * First package at head of the buffer 379 */ 380 ExternalObject = ACPI_CAST_PTR (ACPI_OBJECT, Buffer); 381 382 /* 383 * Free space begins right after the first package 384 */ 385 Info.Length = ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT)); 386 Info.FreeSpace = Buffer + ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT)); 387 Info.ObjectSpace = 0; 388 Info.NumPackages = 1; 389 390 ExternalObject->Type = ACPI_GET_OBJECT_TYPE (InternalObject); 391 ExternalObject->Package.Count = InternalObject->Package.Count; 392 ExternalObject->Package.Elements = ACPI_CAST_PTR (ACPI_OBJECT, Info.FreeSpace); 393 394 /* 395 * Leave room for an array of ACPI_OBJECTS in the buffer 396 * and move the free space past it 397 */ 398 Info.Length += (ACPI_SIZE) ExternalObject->Package.Count * 399 ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT)); 400 Info.FreeSpace += ExternalObject->Package.Count * 401 ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT)); 402 403 Status = AcpiUtWalkPackageTree (InternalObject, ExternalObject, 404 AcpiUtCopyIelementToEelement, &Info); 405 406 *SpaceUsed = Info.Length; 407 return_ACPI_STATUS (Status); 408} 409 410 411/******************************************************************************* 412 * 413 * FUNCTION: AcpiUtCopyIobjectToEobject 414 * 415 * PARAMETERS: *InternalObject - The internal object to be converted 416 * *BufferPtr - Where the object is returned 417 * 418 * RETURN: Status 419 * 420 * DESCRIPTION: This function is called to build an API object to be returned to 421 * the caller. 422 * 423 ******************************************************************************/ 424 425ACPI_STATUS 426AcpiUtCopyIobjectToEobject ( 427 ACPI_OPERAND_OBJECT *InternalObject, 428 ACPI_BUFFER *RetBuffer) 429{ 430 ACPI_STATUS Status; 431 432 433 ACPI_FUNCTION_TRACE ("UtCopyIobjectToEobject"); 434 435 436 if (ACPI_GET_OBJECT_TYPE (InternalObject) == ACPI_TYPE_PACKAGE) 437 { 438 /* 439 * Package object: Copy all subobjects (including 440 * nested packages) 441 */ 442 Status = AcpiUtCopyIpackageToEpackage (InternalObject, 443 RetBuffer->Pointer, &RetBuffer->Length); 444 } 445 else 446 { 447 /* 448 * Build a simple object (no nested objects) 449 */ 450 Status = AcpiUtCopyIsimpleToEsimple (InternalObject, 451 (ACPI_OBJECT *) RetBuffer->Pointer, 452 ((UINT8 *) RetBuffer->Pointer + 453 ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT))), 454 &RetBuffer->Length); 455 /* 456 * build simple does not include the object size in the length 457 * so we add it in here 458 */ 459 RetBuffer->Length += sizeof (ACPI_OBJECT); 460 } 461 462 return_ACPI_STATUS (Status); 463} 464 465 466/******************************************************************************* 467 * 468 * FUNCTION: AcpiUtCopyEsimpleToIsimple 469 * 470 * PARAMETERS: *ExternalObject - The external object to be converted 471 * *InternalObject - Where the internal object is returned 472 * 473 * RETURN: Status 474 * 475 * DESCRIPTION: This function copies an external object to an internal one. 476 * NOTE: Pointers can be copied, we don't need to copy data. 477 * (The pointers have to be valid in our address space no matter 478 * what we do with them!) 479 * 480 ******************************************************************************/ 481 482ACPI_STATUS 483AcpiUtCopyEsimpleToIsimple ( 484 ACPI_OBJECT *ExternalObject, 485 ACPI_OPERAND_OBJECT **RetInternalObject) 486{ 487 ACPI_OPERAND_OBJECT *InternalObject; 488 489 490 ACPI_FUNCTION_TRACE ("UtCopyEsimpleToIsimple"); 491 492 493 /* 494 * Simple types supported are: String, Buffer, Integer 495 */ 496 switch (ExternalObject->Type) 497 { 498 case ACPI_TYPE_STRING: 499 case ACPI_TYPE_BUFFER: 500 case ACPI_TYPE_INTEGER: 501 502 InternalObject = AcpiUtCreateInternalObject ((UINT8) ExternalObject->Type); 503 if (!InternalObject) 504 { 505 return_ACPI_STATUS (AE_NO_MEMORY); 506 } 507 break; 508 509 default: 510 /* 511 * Whatever other type -- it is not supported 512 */ 513 return_ACPI_STATUS (AE_SUPPORT); 514 } 515 516 517 switch (ExternalObject->Type) 518 { 519 520 /* Must COPY string and buffer contents */ 521 522 case ACPI_TYPE_STRING: 523 524 InternalObject->String.Pointer = ACPI_MEM_CALLOCATE ((ACPI_SIZE) ExternalObject->String.Length + 1); 525 if (!InternalObject->String.Pointer) 526 { 527 return_ACPI_STATUS (AE_NO_MEMORY); 528 } 529 530 ACPI_MEMCPY (InternalObject->String.Pointer, 531 ExternalObject->String.Pointer, 532 ExternalObject->String.Length); 533 534 InternalObject->String.Length = ExternalObject->String.Length; 535 break; 536 537 538 case ACPI_TYPE_BUFFER: 539 540 InternalObject->Buffer.Pointer = ACPI_MEM_CALLOCATE (ExternalObject->Buffer.Length); 541 if (!InternalObject->Buffer.Pointer) 542 { 543 return_ACPI_STATUS (AE_NO_MEMORY); 544 } 545 546 ACPI_MEMCPY (InternalObject->Buffer.Pointer, 547 ExternalObject->Buffer.Pointer, 548 ExternalObject->Buffer.Length); 549 550 InternalObject->Buffer.Length = ExternalObject->Buffer.Length; 551 break; 552 553 554 case ACPI_TYPE_INTEGER: 555 556 InternalObject->Integer.Value = ExternalObject->Integer.Value; 557 break; 558 559 default: 560 /* Other types can't get here */ 561 break; 562 } 563 564 *RetInternalObject = InternalObject; 565 return_ACPI_STATUS (AE_OK); 566} 567 568 569#ifdef ACPI_FUTURE_IMPLEMENTATION 570 571/* Code to convert packages that are parameters to control methods */ 572 573/******************************************************************************* 574 * 575 * FUNCTION: AcpiUtCopyEpackageToIpackage 576 * 577 * PARAMETERS: *InternalObject - Pointer to the object we are returning 578 * *Buffer - Where the object is returned 579 * *SpaceUsed - Where the length of the object is returned 580 * 581 * RETURN: Status - the status of the call 582 * 583 * DESCRIPTION: This function is called to place a package object in a user 584 * buffer. A package object by definition contains other objects. 585 * 586 * The buffer is assumed to have sufficient space for the object. 587 * The caller must have verified the buffer length needed using the 588 * AcpiUtGetObjectSize function before calling this function. 589 * 590 ******************************************************************************/ 591 592static ACPI_STATUS 593AcpiUtCopyEpackageToIpackage ( 594 ACPI_OPERAND_OBJECT *InternalObject, 595 UINT8 *Buffer, 596 UINT32 *SpaceUsed) 597{ 598 UINT8 *FreeSpace; 599 ACPI_OBJECT *ExternalObject; 600 UINT32 Length = 0; 601 UINT32 ThisIndex; 602 UINT32 ObjectSpace = 0; 603 ACPI_OPERAND_OBJECT *ThisInternalObj; 604 ACPI_OBJECT *ThisExternalObj; 605 606 607 ACPI_FUNCTION_TRACE ("UtCopyEpackageToIpackage"); 608 609 610 /* 611 * First package at head of the buffer 612 */ 613 ExternalObject = (ACPI_OBJECT *)Buffer; 614 615 /* 616 * Free space begins right after the first package 617 */ 618 FreeSpace = Buffer + sizeof(ACPI_OBJECT); 619 620 621 ExternalObject->Type = ACPI_GET_OBJECT_TYPE (InternalObject); 622 ExternalObject->Package.Count = InternalObject->Package.Count; 623 ExternalObject->Package.Elements = (ACPI_OBJECT *)FreeSpace; 624 625 /* 626 * Build an array of ACPI_OBJECTS in the buffer 627 * and move the free space past it 628 */ 629 FreeSpace += ExternalObject->Package.Count * sizeof(ACPI_OBJECT); 630 631 632 /* Call WalkPackage */ 633 634} 635 636#endif /* Future implementation */ 637 638 639/******************************************************************************* 640 * 641 * FUNCTION: AcpiUtCopyEobjectToIobject 642 * 643 * PARAMETERS: *InternalObject - The external object to be converted 644 * *BufferPtr - Where the internal object is returned 645 * 646 * RETURN: Status - the status of the call 647 * 648 * DESCRIPTION: Converts an external object to an internal object. 649 * 650 ******************************************************************************/ 651 652ACPI_STATUS 653AcpiUtCopyEobjectToIobject ( 654 ACPI_OBJECT *ExternalObject, 655 ACPI_OPERAND_OBJECT **InternalObject) 656{ 657 ACPI_STATUS Status; 658 659 660 ACPI_FUNCTION_TRACE ("UtCopyEobjectToIobject"); 661 662 663 if (ExternalObject->Type == ACPI_TYPE_PACKAGE) 664 { 665 /* 666 * Packages as external input to control methods are not supported, 667 */ 668 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, 669 "Packages as parameters not implemented!\n")); 670 671 return_ACPI_STATUS (AE_NOT_IMPLEMENTED); 672 } 673 674 else 675 { 676 /* 677 * Build a simple object (no nested objects) 678 */ 679 Status = AcpiUtCopyEsimpleToIsimple (ExternalObject, InternalObject); 680 } 681 682 return_ACPI_STATUS (Status); 683} 684 685 686/******************************************************************************* 687 * 688 * FUNCTION: AcpiUtCopySimpleObject 689 * 690 * PARAMETERS: SourceDesc - The internal object to be copied 691 * DestDesc - New target object 692 * 693 * RETURN: Status 694 * 695 * DESCRIPTION: Simple copy of one internal object to another. Reference count 696 * of the destination object is preserved. 697 * 698 ******************************************************************************/ 699 700ACPI_STATUS 701AcpiUtCopySimpleObject ( 702 ACPI_OPERAND_OBJECT *SourceDesc, 703 ACPI_OPERAND_OBJECT *DestDesc) 704{ 705 UINT16 ReferenceCount; 706 ACPI_OPERAND_OBJECT *NextObject; 707 708 709 /* Save fields from destination that we don't want to overwrite */ 710 711 ReferenceCount = DestDesc->Common.ReferenceCount; 712 NextObject = DestDesc->Common.NextObject; 713 714 /* Copy the entire source object over the destination object*/ 715 716 ACPI_MEMCPY ((char *) DestDesc, (char *) SourceDesc, sizeof (ACPI_OPERAND_OBJECT)); 717 718 /* Restore the saved fields */ 719 720 DestDesc->Common.ReferenceCount = ReferenceCount; 721 DestDesc->Common.NextObject = NextObject; 722 723 /* Handle the objects with extra data */ 724 725 switch (ACPI_GET_OBJECT_TYPE (DestDesc)) 726 { 727 case ACPI_TYPE_BUFFER: 728 729 DestDesc->Buffer.Node = NULL; 730 DestDesc->Common.Flags = SourceDesc->Common.Flags; 731 732 /* Fall through to common string/buffer case */ 733 /*lint -fallthrough */ 734 735 case ACPI_TYPE_STRING: 736 737 /* 738 * Allocate and copy the actual string if and only if: 739 * 1) There is a valid string (length > 0) 740 * 2) The string is not static (not in an ACPI table) (in this case, 741 * the actual pointer was already copied above) 742 */ 743 if ((SourceDesc->String.Length) && 744 (!(SourceDesc->Common.Flags & AOPOBJ_STATIC_POINTER))) 745 { 746 DestDesc->String.Pointer = ACPI_MEM_ALLOCATE (SourceDesc->String.Length); 747 if (!DestDesc->String.Pointer) 748 { 749 return (AE_NO_MEMORY); 750 } 751 752 ACPI_MEMCPY (DestDesc->String.Pointer, SourceDesc->String.Pointer, 753 SourceDesc->String.Length); 754 } 755 break; 756 757 default: 758 /* Nothing to do for other simple objects */ 759 break; 760 } 761 762 return (AE_OK); 763} 764 765 766/******************************************************************************* 767 * 768 * FUNCTION: AcpiUtCopyIelementToIelement 769 * 770 * PARAMETERS: ACPI_PKG_CALLBACK 771 * 772 * RETURN: Status 773 * 774 * DESCRIPTION: Copy one package element to another package element 775 * 776 ******************************************************************************/ 777 778ACPI_STATUS 779AcpiUtCopyIelementToIelement ( 780 UINT8 ObjectType, 781 ACPI_OPERAND_OBJECT *SourceObject, 782 ACPI_GENERIC_STATE *State, 783 void *Context) 784{ 785 ACPI_STATUS Status = AE_OK; 786 UINT32 ThisIndex; 787 ACPI_OPERAND_OBJECT **ThisTargetPtr; 788 ACPI_OPERAND_OBJECT *TargetObject; 789 790 791 ACPI_FUNCTION_ENTRY (); 792 793 794 ThisIndex = State->Pkg.Index; 795 ThisTargetPtr = (ACPI_OPERAND_OBJECT **) 796 &State->Pkg.DestObject->Package.Elements[ThisIndex]; 797 798 switch (ObjectType) 799 { 800 case 0: 801 802 /* 803 * This is a simple object, just copy it 804 */ 805 TargetObject = AcpiUtCreateInternalObject (ACPI_GET_OBJECT_TYPE (SourceObject)); 806 if (!TargetObject) 807 { 808 return (AE_NO_MEMORY); 809 } 810 811 Status = AcpiUtCopySimpleObject (SourceObject, TargetObject); 812 if (ACPI_FAILURE (Status)) 813 { 814 return (Status); 815 } 816 817 *ThisTargetPtr = TargetObject; 818 break; 819 820 821 case 1: 822 823 /* 824 * This object is a package - go down another nesting level 825 * Create and build the package object 826 */ 827 TargetObject = AcpiUtCreateInternalObject (ACPI_TYPE_PACKAGE); 828 if (!TargetObject) 829 { 830 return (AE_NO_MEMORY); 831 } 832 833 TargetObject->Package.Count = SourceObject->Package.Count; 834 TargetObject->Common.Flags = SourceObject->Common.Flags; 835 836 /* 837 * Pass the new package object back to the package walk routine 838 */ 839 State->Pkg.ThisTargetObj = TargetObject; 840 841 /* 842 * Store the object pointer in the parent package object 843 */ 844 *ThisTargetPtr = TargetObject; 845 break; 846 847 848 default: 849 return (AE_BAD_PARAMETER); 850 } 851 852 return (Status); 853} 854 855 856/******************************************************************************* 857 * 858 * FUNCTION: AcpiUtCopyIpackageToIpackage 859 * 860 * PARAMETERS: *SourceObj - Pointer to the source package object 861 * *DestObj - Where the internal object is returned 862 * 863 * RETURN: Status - the status of the call 864 * 865 * DESCRIPTION: This function is called to copy an internal package object 866 * into another internal package object. 867 * 868 ******************************************************************************/ 869 870ACPI_STATUS 871AcpiUtCopyIpackageToIpackage ( 872 ACPI_OPERAND_OBJECT *SourceObj, 873 ACPI_OPERAND_OBJECT *DestObj, 874 ACPI_WALK_STATE *WalkState) 875{ 876 ACPI_STATUS Status = AE_OK; 877 878 879 ACPI_FUNCTION_TRACE ("UtCopyIpackageToIpackage"); 880 881 882 DestObj->Common.Type = ACPI_GET_OBJECT_TYPE (SourceObj); 883 DestObj->Common.Flags = SourceObj->Common.Flags; 884 DestObj->Package.Count = SourceObj->Package.Count; 885 886 /* 887 * Create the object array and walk the source package tree 888 */ 889 DestObj->Package.Elements = ACPI_MEM_CALLOCATE ( 890 ((ACPI_SIZE) SourceObj->Package.Count + 1) * 891 sizeof (void *)); 892 if (!DestObj->Package.Elements) 893 { 894 ACPI_REPORT_ERROR ( 895 ("AmlBuildCopyInternalPackageObject: Package allocation failure\n")); 896 return_ACPI_STATUS (AE_NO_MEMORY); 897 } 898 899 /* 900 * Copy the package element-by-element by walking the package "tree". 901 * This handles nested packages of arbitrary depth. 902 */ 903 Status = AcpiUtWalkPackageTree (SourceObj, DestObj, 904 AcpiUtCopyIelementToIelement, WalkState); 905 if (ACPI_FAILURE (Status)) 906 { 907 /* On failure, delete the destination package object */ 908 909 AcpiUtRemoveReference (DestObj); 910 } 911 912 return_ACPI_STATUS (Status); 913} 914 915 916/******************************************************************************* 917 * 918 * FUNCTION: AcpiUtCopyIobjectToIobject 919 * 920 * PARAMETERS: WalkState - Current walk state 921 * SourceDesc - The internal object to be copied 922 * DestDesc - Where the copied object is returned 923 * 924 * RETURN: Status 925 * 926 * DESCRIPTION: Copy an internal object to a new internal object 927 * 928 ******************************************************************************/ 929 930ACPI_STATUS 931AcpiUtCopyIobjectToIobject ( 932 ACPI_OPERAND_OBJECT *SourceDesc, 933 ACPI_OPERAND_OBJECT **DestDesc, 934 ACPI_WALK_STATE *WalkState) 935{ 936 ACPI_STATUS Status = AE_OK; 937 938 939 ACPI_FUNCTION_TRACE ("UtCopyIobjectToIobject"); 940 941 942 /* Create the top level object */ 943 944 *DestDesc = AcpiUtCreateInternalObject (ACPI_GET_OBJECT_TYPE (SourceDesc)); 945 if (!*DestDesc) 946 { 947 return_ACPI_STATUS (AE_NO_MEMORY); 948 } 949 950 /* Copy the object and possible subobjects */ 951 952 if (ACPI_GET_OBJECT_TYPE (SourceDesc) == ACPI_TYPE_PACKAGE) 953 { 954 Status = AcpiUtCopyIpackageToIpackage (SourceDesc, *DestDesc, 955 WalkState); 956 } 957 else 958 { 959 Status = AcpiUtCopySimpleObject (SourceDesc, *DestDesc); 960 } 961 962 return_ACPI_STATUS (Status); 963} 964 965 966