1 /****************************************************************************** 2 * 3 * Module Name: aslopcode - AML opcode generation 4 * 5 *****************************************************************************/ 6 7 /* 8 * Copyright (C) 2000 - 2013, 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 #include <contrib/dev/acpica/compiler/aslcompiler.h> 46 #include "aslcompiler.y.h" 47 #include <contrib/dev/acpica/include/amlcode.h> 48 49 #define _COMPONENT ACPI_COMPILER 50 ACPI_MODULE_NAME ("aslopcodes") 51 52 53 /* Local prototypes */ 54 55 static void 56 OpcDoAccessAs ( 57 ACPI_PARSE_OBJECT *Op); 58 59 static void 60 OpcDoConnection ( 61 ACPI_PARSE_OBJECT *Op); 62 63 static void 64 OpcDoUnicode ( 65 ACPI_PARSE_OBJECT *Op); 66 67 static void 68 OpcDoEisaId ( 69 ACPI_PARSE_OBJECT *Op); 70 71 static void 72 OpcDoUuId ( 73 ACPI_PARSE_OBJECT *Op); 74 75 76 /******************************************************************************* 77 * 78 * FUNCTION: OpcAmlOpcodeUpdateWalk 79 * 80 * PARAMETERS: ASL_WALK_CALLBACK 81 * 82 * RETURN: Status 83 * 84 * DESCRIPTION: Opcode update walk, ascending callback 85 * 86 ******************************************************************************/ 87 88 ACPI_STATUS 89 OpcAmlOpcodeUpdateWalk ( 90 ACPI_PARSE_OBJECT *Op, 91 UINT32 Level, 92 void *Context) 93 { 94 95 /* 96 * Handle the Package() case where the actual opcode cannot be determined 97 * until the PackageLength operand has been folded and minimized. 98 * (PackageOp versus VarPackageOp) 99 * 100 * This is (as of ACPI 3.0) the only case where the AML opcode can change 101 * based upon the value of a parameter. 102 * 103 * The parser always inserts a VarPackage opcode, which can possibly be 104 * optimized to a Package opcode. 105 */ 106 if (Op->Asl.ParseOpcode == PARSEOP_VAR_PACKAGE) 107 { 108 OpnDoPackage (Op); 109 } 110 111 return (AE_OK); 112 } 113 114 115 /******************************************************************************* 116 * 117 * FUNCTION: OpcAmlOpcodeWalk 118 * 119 * PARAMETERS: ASL_WALK_CALLBACK 120 * 121 * RETURN: Status 122 * 123 * DESCRIPTION: Parse tree walk to generate both the AML opcodes and the AML 124 * operands. 125 * 126 ******************************************************************************/ 127 128 ACPI_STATUS 129 OpcAmlOpcodeWalk ( 130 ACPI_PARSE_OBJECT *Op, 131 UINT32 Level, 132 void *Context) 133 { 134 135 TotalParseNodes++; 136 137 OpcGenerateAmlOpcode (Op); 138 OpnGenerateAmlOperands (Op); 139 return (AE_OK); 140 } 141 142 143 /******************************************************************************* 144 * 145 * FUNCTION: OpcGetIntegerWidth 146 * 147 * PARAMETERS: Op - DEFINITION BLOCK op 148 * 149 * RETURN: none 150 * 151 * DESCRIPTION: Extract integer width from the table revision 152 * 153 ******************************************************************************/ 154 155 void 156 OpcGetIntegerWidth ( 157 ACPI_PARSE_OBJECT *Op) 158 { 159 ACPI_PARSE_OBJECT *Child; 160 161 162 if (!Op) 163 { 164 return; 165 } 166 167 if (Gbl_RevisionOverride) 168 { 169 AcpiUtSetIntegerWidth (Gbl_RevisionOverride); 170 } 171 else 172 { 173 Child = Op->Asl.Child; 174 Child = Child->Asl.Next; 175 Child = Child->Asl.Next; 176 177 /* Use the revision to set the integer width */ 178 179 AcpiUtSetIntegerWidth ((UINT8) Child->Asl.Value.Integer); 180 } 181 } 182 183 184 /******************************************************************************* 185 * 186 * FUNCTION: OpcSetOptimalIntegerSize 187 * 188 * PARAMETERS: Op - A parse tree node 189 * 190 * RETURN: Integer width, in bytes. Also sets the node AML opcode to the 191 * optimal integer AML prefix opcode. 192 * 193 * DESCRIPTION: Determine the optimal AML encoding of an integer. All leading 194 * zeros can be truncated to squeeze the integer into the 195 * minimal number of AML bytes. 196 * 197 ******************************************************************************/ 198 199 UINT32 200 OpcSetOptimalIntegerSize ( 201 ACPI_PARSE_OBJECT *Op) 202 { 203 204 #if 0 205 /* 206 * TBD: - we don't want to optimize integers in the block header, but the 207 * code below does not work correctly. 208 */ 209 if (Op->Asl.Parent && 210 Op->Asl.Parent->Asl.Parent && 211 (Op->Asl.Parent->Asl.Parent->Asl.ParseOpcode == PARSEOP_DEFINITIONBLOCK)) 212 { 213 return (0); 214 } 215 #endif 216 217 /* 218 * Check for the special AML integers first - Zero, One, Ones. 219 * These are single-byte opcodes that are the smallest possible 220 * representation of an integer. 221 * 222 * This optimization is optional. 223 */ 224 if (Gbl_IntegerOptimizationFlag) 225 { 226 switch (Op->Asl.Value.Integer) 227 { 228 case 0: 229 230 Op->Asl.AmlOpcode = AML_ZERO_OP; 231 AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION, 232 Op, "Zero"); 233 return (1); 234 235 case 1: 236 237 Op->Asl.AmlOpcode = AML_ONE_OP; 238 AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION, 239 Op, "One"); 240 return (1); 241 242 case ACPI_UINT32_MAX: 243 244 /* Check for table integer width (32 or 64) */ 245 246 if (AcpiGbl_IntegerByteWidth == 4) 247 { 248 Op->Asl.AmlOpcode = AML_ONES_OP; 249 AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION, 250 Op, "Ones"); 251 return (1); 252 } 253 break; 254 255 case ACPI_UINT64_MAX: 256 257 /* Check for table integer width (32 or 64) */ 258 259 if (AcpiGbl_IntegerByteWidth == 8) 260 { 261 Op->Asl.AmlOpcode = AML_ONES_OP; 262 AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION, 263 Op, "Ones"); 264 return (1); 265 } 266 break; 267 268 default: 269 270 break; 271 } 272 } 273 274 /* Find the best fit using the various AML integer prefixes */ 275 276 if (Op->Asl.Value.Integer <= ACPI_UINT8_MAX) 277 { 278 Op->Asl.AmlOpcode = AML_BYTE_OP; 279 return (1); 280 } 281 if (Op->Asl.Value.Integer <= ACPI_UINT16_MAX) 282 { 283 Op->Asl.AmlOpcode = AML_WORD_OP; 284 return (2); 285 } 286 if (Op->Asl.Value.Integer <= ACPI_UINT32_MAX) 287 { 288 Op->Asl.AmlOpcode = AML_DWORD_OP; 289 return (4); 290 } 291 else 292 { 293 if (AcpiGbl_IntegerByteWidth == 4) 294 { 295 AslError (ASL_WARNING, ASL_MSG_INTEGER_LENGTH, 296 Op, NULL); 297 298 if (!Gbl_IgnoreErrors) 299 { 300 /* Truncate the integer to 32-bit */ 301 Op->Asl.AmlOpcode = AML_DWORD_OP; 302 return (4); 303 } 304 } 305 306 Op->Asl.AmlOpcode = AML_QWORD_OP; 307 return (8); 308 } 309 } 310 311 312 /******************************************************************************* 313 * 314 * FUNCTION: OpcDoAccessAs 315 * 316 * PARAMETERS: Op - Parse node 317 * 318 * RETURN: None 319 * 320 * DESCRIPTION: Implement the ACCESS_AS ASL keyword. 321 * 322 ******************************************************************************/ 323 324 static void 325 OpcDoAccessAs ( 326 ACPI_PARSE_OBJECT *Op) 327 { 328 ACPI_PARSE_OBJECT *TypeOp; 329 ACPI_PARSE_OBJECT *AttribOp; 330 ACPI_PARSE_OBJECT *LengthOp; 331 UINT8 Attribute; 332 333 334 Op->Asl.AmlOpcodeLength = 1; 335 TypeOp = Op->Asl.Child; 336 337 /* First child is the access type */ 338 339 TypeOp->Asl.AmlOpcode = AML_RAW_DATA_BYTE; 340 TypeOp->Asl.ParseOpcode = PARSEOP_RAW_DATA; 341 342 /* Second child is the optional access attribute */ 343 344 AttribOp = TypeOp->Asl.Next; 345 if (AttribOp->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) 346 { 347 AttribOp->Asl.Value.Integer = 0; 348 } 349 AttribOp->Asl.AmlOpcode = AML_RAW_DATA_BYTE; 350 AttribOp->Asl.ParseOpcode = PARSEOP_RAW_DATA; 351 352 /* Only a few AccessAttributes support AccessLength */ 353 354 Attribute = (UINT8) AttribOp->Asl.Value.Integer; 355 if ((Attribute != AML_FIELD_ATTRIB_MULTIBYTE) && 356 (Attribute != AML_FIELD_ATTRIB_RAW_BYTES) && 357 (Attribute != AML_FIELD_ATTRIB_RAW_PROCESS)) 358 { 359 return; 360 } 361 362 Op->Asl.AmlOpcode = AML_FIELD_EXT_ACCESS_OP; 363 364 /* 365 * Child of Attributes is the AccessLength (required for Multibyte, 366 * RawBytes, RawProcess.) 367 */ 368 LengthOp = AttribOp->Asl.Child; 369 if (!LengthOp) 370 { 371 return; 372 } 373 374 /* TBD: probably can remove */ 375 376 if (LengthOp->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) 377 { 378 LengthOp->Asl.Value.Integer = 16; 379 } 380 381 LengthOp->Asl.AmlOpcode = AML_RAW_DATA_BYTE; 382 LengthOp->Asl.ParseOpcode = PARSEOP_RAW_DATA; 383 } 384 385 386 /******************************************************************************* 387 * 388 * FUNCTION: OpcDoConnection 389 * 390 * PARAMETERS: Op - Parse node 391 * 392 * RETURN: None 393 * 394 * DESCRIPTION: Implement the Connection ASL keyword. 395 * 396 ******************************************************************************/ 397 398 static void 399 OpcDoConnection ( 400 ACPI_PARSE_OBJECT *Op) 401 { 402 ASL_RESOURCE_NODE *Rnode; 403 ACPI_PARSE_OBJECT *BufferOp; 404 ACPI_PARSE_OBJECT *BufferLengthOp; 405 ACPI_PARSE_OBJECT *BufferDataOp; 406 UINT8 State; 407 408 409 Op->Asl.AmlOpcodeLength = 1; 410 411 if (Op->Asl.Child->Asl.AmlOpcode == AML_INT_NAMEPATH_OP) 412 { 413 return; 414 } 415 416 BufferOp = Op->Asl.Child; 417 BufferLengthOp = BufferOp->Asl.Child; 418 BufferDataOp = BufferLengthOp->Asl.Next; 419 420 State = ACPI_RSTATE_NORMAL; 421 Rnode = RsDoOneResourceDescriptor (BufferDataOp->Asl.Next, 0, &State); 422 if (!Rnode) 423 { 424 return; /* error */ 425 } 426 427 /* 428 * Transform the nodes into the following 429 * 430 * Op -> AML_BUFFER_OP 431 * First Child -> BufferLength 432 * Second Child -> Descriptor Buffer (raw byte data) 433 */ 434 BufferOp->Asl.ParseOpcode = PARSEOP_BUFFER; 435 BufferOp->Asl.AmlOpcode = AML_BUFFER_OP; 436 BufferOp->Asl.CompileFlags = NODE_AML_PACKAGE | NODE_IS_RESOURCE_DESC; 437 UtSetParseOpName (BufferOp); 438 439 BufferLengthOp->Asl.ParseOpcode = PARSEOP_INTEGER; 440 BufferLengthOp->Asl.Value.Integer = Rnode->BufferLength; 441 (void) OpcSetOptimalIntegerSize (BufferLengthOp); 442 UtSetParseOpName (BufferLengthOp); 443 444 BufferDataOp->Asl.ParseOpcode = PARSEOP_RAW_DATA; 445 BufferDataOp->Asl.AmlOpcode = AML_RAW_DATA_CHAIN; 446 BufferDataOp->Asl.AmlOpcodeLength = 0; 447 BufferDataOp->Asl.AmlLength = Rnode->BufferLength; 448 BufferDataOp->Asl.Value.Buffer = (UINT8 *) Rnode; 449 UtSetParseOpName (BufferDataOp); 450 } 451 452 453 /******************************************************************************* 454 * 455 * FUNCTION: OpcDoUnicode 456 * 457 * PARAMETERS: Op - Parse node 458 * 459 * RETURN: None 460 * 461 * DESCRIPTION: Implement the UNICODE ASL "macro". Convert the input string 462 * to a unicode buffer. There is no Unicode AML opcode. 463 * 464 * Note: The Unicode string is 16 bits per character, no leading signature, 465 * with a 16-bit terminating NULL. 466 * 467 ******************************************************************************/ 468 469 static void 470 OpcDoUnicode ( 471 ACPI_PARSE_OBJECT *Op) 472 { 473 ACPI_PARSE_OBJECT *InitializerOp; 474 UINT32 Length; 475 UINT32 Count; 476 UINT32 i; 477 UINT8 *AsciiString; 478 UINT16 *UnicodeString; 479 ACPI_PARSE_OBJECT *BufferLengthOp; 480 481 482 /* Change op into a buffer object */ 483 484 Op->Asl.CompileFlags &= ~NODE_COMPILE_TIME_CONST; 485 Op->Asl.ParseOpcode = PARSEOP_BUFFER; 486 UtSetParseOpName (Op); 487 488 /* Buffer Length is first, followed by the string */ 489 490 BufferLengthOp = Op->Asl.Child; 491 InitializerOp = BufferLengthOp->Asl.Next; 492 493 AsciiString = (UINT8 *) InitializerOp->Asl.Value.String; 494 495 /* Create a new buffer for the Unicode string */ 496 497 Count = strlen (InitializerOp->Asl.Value.String) + 1; 498 Length = Count * sizeof (UINT16); 499 UnicodeString = UtLocalCalloc (Length); 500 501 /* Convert to Unicode string (including null terminator) */ 502 503 for (i = 0; i < Count; i++) 504 { 505 UnicodeString[i] = (UINT16) AsciiString[i]; 506 } 507 508 /* 509 * Just set the buffer size node to be the buffer length, regardless 510 * of whether it was previously an integer or a default_arg placeholder 511 */ 512 BufferLengthOp->Asl.ParseOpcode = PARSEOP_INTEGER; 513 BufferLengthOp->Asl.AmlOpcode = AML_DWORD_OP; 514 BufferLengthOp->Asl.Value.Integer = Length; 515 UtSetParseOpName (BufferLengthOp); 516 517 (void) OpcSetOptimalIntegerSize (BufferLengthOp); 518 519 /* The Unicode string is a raw data buffer */ 520 521 InitializerOp->Asl.Value.Buffer = (UINT8 *) UnicodeString; 522 InitializerOp->Asl.AmlOpcode = AML_RAW_DATA_BUFFER; 523 InitializerOp->Asl.AmlLength = Length; 524 InitializerOp->Asl.ParseOpcode = PARSEOP_RAW_DATA; 525 InitializerOp->Asl.Child = NULL; 526 UtSetParseOpName (InitializerOp); 527 } 528 529 530 /******************************************************************************* 531 * 532 * FUNCTION: OpcDoEisaId 533 * 534 * PARAMETERS: Op - Parse node 535 * 536 * RETURN: None 537 * 538 * DESCRIPTION: Convert a string EISA ID to numeric representation. See the 539 * Pnp BIOS Specification for details. Here is an excerpt: 540 * 541 * A seven character ASCII representation of the product 542 * identifier compressed into a 32-bit identifier. The seven 543 * character ID consists of a three character manufacturer code, 544 * a three character hexadecimal product identifier, and a one 545 * character hexadecimal revision number. The manufacturer code 546 * is a 3 uppercase character code that is compressed into 3 5-bit 547 * values as follows: 548 * 1) Find hex ASCII value for each letter 549 * 2) Subtract 40h from each ASCII value 550 * 3) Retain 5 least significant bits for each letter by 551 * discarding upper 3 bits because they are always 0. 552 * 4) Compressed code = concatenate 0 and the 3 5-bit values 553 * 554 * The format of the compressed product identifier is as follows: 555 * Byte 0: Bit 7 - Reserved (0) 556 * Bits 6-2: - 1st character of compressed mfg code 557 * Bits 1-0 - Upper 2 bits of 2nd character of mfg code 558 * Byte 1: Bits 7-5 - Lower 3 bits of 2nd character of mfg code 559 * Bits 4-0 - 3rd character of mfg code 560 * Byte 2: Bits 7-4 - 1st hex digit of product number 561 * Bits 3-0 - 2nd hex digit of product number 562 * Byte 3: Bits 7-4 - 3st hex digit of product number 563 * Bits 3-0 - Hex digit of the revision number 564 * 565 ******************************************************************************/ 566 567 static void 568 OpcDoEisaId ( 569 ACPI_PARSE_OBJECT *Op) 570 { 571 UINT32 EisaId = 0; 572 UINT32 BigEndianId; 573 char *InString; 574 ACPI_STATUS Status = AE_OK; 575 UINT32 i; 576 577 578 InString = (char *) Op->Asl.Value.String; 579 580 /* 581 * The EISAID string must be exactly 7 characters and of the form 582 * "UUUXXXX" -- 3 uppercase letters and 4 hex digits (e.g., "PNP0001") 583 */ 584 if (ACPI_STRLEN (InString) != 7) 585 { 586 Status = AE_BAD_PARAMETER; 587 } 588 else 589 { 590 /* Check all 7 characters for correct format */ 591 592 for (i = 0; i < 7; i++) 593 { 594 /* First 3 characters must be uppercase letters */ 595 596 if (i < 3) 597 { 598 if (!isupper ((int) InString[i])) 599 { 600 Status = AE_BAD_PARAMETER; 601 } 602 } 603 604 /* Last 4 characters must be hex digits */ 605 606 else if (!isxdigit ((int) InString[i])) 607 { 608 Status = AE_BAD_PARAMETER; 609 } 610 } 611 } 612 613 if (ACPI_FAILURE (Status)) 614 { 615 AslError (ASL_ERROR, ASL_MSG_INVALID_EISAID, Op, Op->Asl.Value.String); 616 } 617 else 618 { 619 /* Create ID big-endian first (bits are contiguous) */ 620 621 BigEndianId = 622 (UINT32) ((UINT8) (InString[0] - 0x40)) << 26 | 623 (UINT32) ((UINT8) (InString[1] - 0x40)) << 21 | 624 (UINT32) ((UINT8) (InString[2] - 0x40)) << 16 | 625 626 (UtHexCharToValue (InString[3])) << 12 | 627 (UtHexCharToValue (InString[4])) << 8 | 628 (UtHexCharToValue (InString[5])) << 4 | 629 UtHexCharToValue (InString[6]); 630 631 /* Swap to little-endian to get final ID (see function header) */ 632 633 EisaId = AcpiUtDwordByteSwap (BigEndianId); 634 } 635 636 /* 637 * Morph the Op into an integer, regardless of whether there 638 * was an error in the EISAID string 639 */ 640 Op->Asl.Value.Integer = EisaId; 641 642 Op->Asl.CompileFlags &= ~NODE_COMPILE_TIME_CONST; 643 Op->Asl.ParseOpcode = PARSEOP_INTEGER; 644 (void) OpcSetOptimalIntegerSize (Op); 645 646 /* Op is now an integer */ 647 648 UtSetParseOpName (Op); 649 } 650 651 652 /******************************************************************************* 653 * 654 * FUNCTION: OpcDoUuId 655 * 656 * PARAMETERS: Op - Parse node 657 * 658 * RETURN: None 659 * 660 * DESCRIPTION: Convert UUID string to 16-byte buffer 661 * 662 ******************************************************************************/ 663 664 static void 665 OpcDoUuId ( 666 ACPI_PARSE_OBJECT *Op) 667 { 668 char *InString; 669 char *Buffer; 670 ACPI_STATUS Status = AE_OK; 671 ACPI_PARSE_OBJECT *NewOp; 672 673 674 InString = (char *) Op->Asl.Value.String; 675 Buffer = UtLocalCalloc (16); 676 677 Status = AuValidateUuid (InString); 678 if (ACPI_FAILURE (Status)) 679 { 680 AslError (ASL_ERROR, ASL_MSG_INVALID_UUID, Op, Op->Asl.Value.String); 681 } 682 else 683 { 684 (void) AuConvertStringToUuid (InString, Buffer); 685 } 686 687 /* Change Op to a Buffer */ 688 689 Op->Asl.ParseOpcode = PARSEOP_BUFFER; 690 Op->Common.AmlOpcode = AML_BUFFER_OP; 691 692 /* Disable further optimization */ 693 694 Op->Asl.CompileFlags &= ~NODE_COMPILE_TIME_CONST; 695 UtSetParseOpName (Op); 696 697 /* Child node is the buffer length */ 698 699 NewOp = TrAllocateNode (PARSEOP_INTEGER); 700 701 NewOp->Asl.AmlOpcode = AML_BYTE_OP; 702 NewOp->Asl.Value.Integer = 16; 703 NewOp->Asl.Parent = Op; 704 705 Op->Asl.Child = NewOp; 706 Op = NewOp; 707 708 /* Peer to the child is the raw buffer data */ 709 710 NewOp = TrAllocateNode (PARSEOP_RAW_DATA); 711 NewOp->Asl.AmlOpcode = AML_RAW_DATA_BUFFER; 712 NewOp->Asl.AmlLength = 16; 713 NewOp->Asl.Value.String = (char *) Buffer; 714 NewOp->Asl.Parent = Op->Asl.Parent; 715 716 Op->Asl.Next = NewOp; 717 } 718 719 720 /******************************************************************************* 721 * 722 * FUNCTION: OpcGenerateAmlOpcode 723 * 724 * PARAMETERS: Op - Parse node 725 * 726 * RETURN: None 727 * 728 * DESCRIPTION: Generate the AML opcode associated with the node and its 729 * parse (lex/flex) keyword opcode. Essentially implements 730 * a mapping between the parse opcodes and the actual AML opcodes. 731 * 732 ******************************************************************************/ 733 734 void 735 OpcGenerateAmlOpcode ( 736 ACPI_PARSE_OBJECT *Op) 737 { 738 739 UINT16 Index; 740 741 742 Index = (UINT16) (Op->Asl.ParseOpcode - ASL_PARSE_OPCODE_BASE); 743 744 Op->Asl.AmlOpcode = AslKeywordMapping[Index].AmlOpcode; 745 Op->Asl.AcpiBtype = AslKeywordMapping[Index].AcpiBtype; 746 Op->Asl.CompileFlags |= AslKeywordMapping[Index].Flags; 747 748 if (!Op->Asl.Value.Integer) 749 { 750 Op->Asl.Value.Integer = AslKeywordMapping[Index].Value; 751 } 752 753 /* Special handling for some opcodes */ 754 755 switch (Op->Asl.ParseOpcode) 756 { 757 case PARSEOP_INTEGER: 758 /* 759 * Set the opcode based on the size of the integer 760 */ 761 (void) OpcSetOptimalIntegerSize (Op); 762 break; 763 764 case PARSEOP_OFFSET: 765 766 Op->Asl.AmlOpcodeLength = 1; 767 break; 768 769 case PARSEOP_ACCESSAS: 770 771 OpcDoAccessAs (Op); 772 break; 773 774 case PARSEOP_CONNECTION: 775 776 OpcDoConnection (Op); 777 break; 778 779 case PARSEOP_EISAID: 780 781 OpcDoEisaId (Op); 782 break; 783 784 case PARSEOP_TOUUID: 785 786 OpcDoUuId (Op); 787 break; 788 789 case PARSEOP_UNICODE: 790 791 OpcDoUnicode (Op); 792 break; 793 794 case PARSEOP_INCLUDE: 795 796 Op->Asl.Child->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG; 797 Gbl_HasIncludeFiles = TRUE; 798 break; 799 800 case PARSEOP_EXTERNAL: 801 802 Op->Asl.Child->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG; 803 Op->Asl.Child->Asl.Next->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG; 804 break; 805 806 case PARSEOP_TIMER: 807 808 if (AcpiGbl_IntegerBitWidth == 32) 809 { 810 AslError (ASL_REMARK, ASL_MSG_TRUNCATION, Op, NULL); 811 } 812 break; 813 814 default: 815 816 /* Nothing to do for other opcodes */ 817 818 break; 819 } 820 821 return; 822 } 823