1 /****************************************************************************** 2 * 3 * Module Name: aslcodegen - AML code generation 4 * 5 *****************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2021, Intel Corp. 12 * All rights reserved. 13 * 14 * 2. License 15 * 16 * 2.1. This is your license from Intel Corp. under its intellectual property 17 * rights. You may have additional license terms from the party that provided 18 * you this software, covering your right to use that party's intellectual 19 * property rights. 20 * 21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 22 * copy of the source code appearing in this file ("Covered Code") an 23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 24 * base code distributed originally by Intel ("Original Intel Code") to copy, 25 * make derivatives, distribute, use and display any portion of the Covered 26 * Code in any form, with the right to sublicense such rights; and 27 * 28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 29 * license (with the right to sublicense), under only those claims of Intel 30 * patents that are infringed by the Original Intel Code, to make, use, sell, 31 * offer to sell, and import the Covered Code and derivative works thereof 32 * solely to the minimum extent necessary to exercise the above copyright 33 * license, and in no event shall the patent license extend to any additions 34 * to or modifications of the Original Intel Code. No other license or right 35 * is granted directly or by implication, estoppel or otherwise; 36 * 37 * The above copyright and patent license is granted only if the following 38 * conditions are met: 39 * 40 * 3. Conditions 41 * 42 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 43 * Redistribution of source code of any substantial portion of the Covered 44 * Code or modification with rights to further distribute source must include 45 * the above Copyright Notice, the above License, this list of Conditions, 46 * and the following Disclaimer and Export Compliance provision. In addition, 47 * Licensee must cause all Covered Code to which Licensee contributes to 48 * contain a file documenting the changes Licensee made to create that Covered 49 * Code and the date of any change. Licensee must include in that file the 50 * documentation of any changes made by any predecessor Licensee. Licensee 51 * must include a prominent statement that the modification is derived, 52 * directly or indirectly, from Original Intel Code. 53 * 54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 55 * Redistribution of source code of any substantial portion of the Covered 56 * Code or modification without rights to further distribute source must 57 * include the following Disclaimer and Export Compliance provision in the 58 * documentation and/or other materials provided with distribution. In 59 * addition, Licensee may not authorize further sublicense of source of any 60 * portion of the Covered Code, and must include terms to the effect that the 61 * license from Licensee to its licensee is limited to the intellectual 62 * property embodied in the software Licensee provides to its licensee, and 63 * not to intellectual property embodied in modifications its licensee may 64 * make. 65 * 66 * 3.3. Redistribution of Executable. Redistribution in executable form of any 67 * substantial portion of the Covered Code or modification must reproduce the 68 * above Copyright Notice, and the following Disclaimer and Export Compliance 69 * provision in the documentation and/or other materials provided with the 70 * distribution. 71 * 72 * 3.4. Intel retains all right, title, and interest in and to the Original 73 * Intel Code. 74 * 75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 76 * Intel shall be used in advertising or otherwise to promote the sale, use or 77 * other dealings in products derived from or relating to the Covered Code 78 * without prior written authorization from Intel. 79 * 80 * 4. Disclaimer and Export Compliance 81 * 82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 88 * PARTICULAR PURPOSE. 89 * 90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 97 * LIMITED REMEDY. 98 * 99 * 4.3. Licensee shall not export, either directly or indirectly, any of this 100 * software or system incorporating such software without first obtaining any 101 * required license or other approval from the U. S. Department of Commerce or 102 * any other agency or department of the United States Government. In the 103 * event Licensee exports any such software from the United States or 104 * re-exports any such software from a foreign destination, Licensee shall 105 * ensure that the distribution and export/re-export of the software is in 106 * compliance with all laws, regulations, orders, or other restrictions of the 107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 108 * any of its subsidiaries will export/re-export any technical data, process, 109 * software, or service, directly or indirectly, to any country for which the 110 * United States government or any agency thereof requires an export license, 111 * other governmental approval, or letter of assurance, without first obtaining 112 * such license, approval or letter. 113 * 114 ***************************************************************************** 115 * 116 * Alternatively, you may choose to be licensed under the terms of the 117 * following license: 118 * 119 * Redistribution and use in source and binary forms, with or without 120 * modification, are permitted provided that the following conditions 121 * are met: 122 * 1. Redistributions of source code must retain the above copyright 123 * notice, this list of conditions, and the following disclaimer, 124 * without modification. 125 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 126 * substantially similar to the "NO WARRANTY" disclaimer below 127 * ("Disclaimer") and any redistribution must be conditioned upon 128 * including a substantially similar Disclaimer requirement for further 129 * binary redistribution. 130 * 3. Neither the names of the above-listed copyright holders nor the names 131 * of any contributors may be used to endorse or promote products derived 132 * from this software without specific prior written permission. 133 * 134 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 135 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 136 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 137 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 138 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 139 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 140 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 141 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 142 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 143 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 144 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 145 * 146 * Alternatively, you may choose to be licensed under the terms of the 147 * GNU General Public License ("GPL") version 2 as published by the Free 148 * Software Foundation. 149 * 150 *****************************************************************************/ 151 152 #include <contrib/dev/acpica/compiler/aslcompiler.h> 153 #include "aslcompiler.y.h" 154 #include <contrib/dev/acpica/include/amlcode.h> 155 #include <contrib/dev/acpica/include/acconvert.h> 156 157 #define _COMPONENT ACPI_COMPILER 158 ACPI_MODULE_NAME ("aslcodegen") 159 160 /* Local prototypes */ 161 162 static ACPI_STATUS 163 CgAmlWriteWalk ( 164 ACPI_PARSE_OBJECT *Op, 165 UINT32 Level, 166 void *Context); 167 168 static void 169 CgWriteAmlOpcode ( 170 ACPI_PARSE_OBJECT *Op); 171 172 static void 173 CgWriteTableHeader ( 174 ACPI_PARSE_OBJECT *Op); 175 176 static void 177 CgWriteNode ( 178 ACPI_PARSE_OBJECT *Op); 179 180 static void 181 CgUpdateHeader ( 182 ACPI_PARSE_OBJECT *Op); 183 184 185 /******************************************************************************* 186 * 187 * FUNCTION: CgGenerateAmlOutput 188 * 189 * PARAMETERS: None. 190 * 191 * RETURN: None 192 * 193 * DESCRIPTION: Generate AML code. Currently generates the listing file 194 * simultaneously. 195 * 196 ******************************************************************************/ 197 198 void 199 CgGenerateAmlOutput ( 200 void) 201 { 202 203 /* Generate the AML output file */ 204 205 TrWalkParseTree (AslGbl_CurrentDB, 206 ASL_WALK_VISIT_DOWNWARD | ASL_WALK_VISIT_DB_SEPARATELY, 207 CgAmlWriteWalk, NULL, NULL); 208 209 DbgPrint (ASL_TREE_OUTPUT, ASL_PARSE_TREE_HEADER2); 210 CgUpdateHeader (AslGbl_CurrentDB); 211 } 212 213 214 /******************************************************************************* 215 * 216 * FUNCTION: CgAmlWriteWalk 217 * 218 * PARAMETERS: ASL_WALK_CALLBACK 219 * 220 * RETURN: Status 221 * 222 * DESCRIPTION: Parse tree walk to generate the AML code. 223 * 224 ******************************************************************************/ 225 226 static ACPI_STATUS 227 CgAmlWriteWalk ( 228 ACPI_PARSE_OBJECT *Op, 229 UINT32 Level, 230 void *Context) 231 { 232 233 /* Generate the AML for this node */ 234 235 CgWriteNode (Op); 236 237 if (!AslGbl_DebugFlag) 238 { 239 return (AE_OK); 240 } 241 242 /* Print header at level 0. Alignment assumes 32-bit pointers */ 243 244 if (!Level) 245 { 246 DbgPrint (ASL_TREE_OUTPUT, 247 "\nFinal parse tree used for AML output:\n"); 248 DbgPrint (ASL_TREE_OUTPUT, ASL_PARSE_TREE_HEADER2); 249 } 250 251 /* Dump ParseOp name and possible value */ 252 253 switch (Op->Asl.ParseOpcode) 254 { 255 case PARSEOP_NAMESEG: 256 case PARSEOP_NAMESTRING: 257 case PARSEOP_METHODCALL: 258 case PARSEOP_STRING_LITERAL: 259 260 UtDumpStringOp (Op, Level); 261 break; 262 263 default: 264 265 UtDumpBasicOp (Op, Level); 266 break; 267 } 268 269 DbgPrint (ASL_TREE_OUTPUT, ASL_PARSE_TREE_DEBUG2, 270 /* 1 */ (UINT32) Op->Asl.Value.Integer, 271 /* 2 */ Op->Asl.ParseOpcode, 272 /* 3 */ Op->Asl.AmlOpcode, 273 /* 4 */ Op->Asl.AmlOpcodeLength, 274 /* 5 */ Op->Asl.AmlPkgLenBytes, 275 /* 6 */ Op->Asl.AmlLength, 276 /* 7 */ Op->Asl.AmlSubtreeLength, 277 /* 8 */ Op->Asl.Parent ? Op->Asl.Parent->Asl.AmlSubtreeLength : 0, 278 /* 9 */ Op, 279 /* 10 */ Op->Asl.Parent, 280 /* 11 */ Op->Asl.Child, 281 /* 12 */ Op->Asl.Next, 282 /* 13 */ Op->Asl.CompileFlags, 283 /* 14 */ Op->Asl.AcpiBtype, 284 /* 15 */ Op->Asl.FinalAmlLength, 285 /* 16 */ Op->Asl.Column, 286 /* 17 */ Op->Asl.LineNumber, 287 /* 18 */ Op->Asl.EndLine, 288 /* 19 */ Op->Asl.LogicalLineNumber, 289 /* 20 */ Op->Asl.EndLogicalLine); 290 291 TrPrintOpFlags (Op->Asl.CompileFlags, ASL_TREE_OUTPUT); 292 DbgPrint (ASL_TREE_OUTPUT, "\n"); 293 return (AE_OK); 294 } 295 296 297 /******************************************************************************* 298 * 299 * FUNCTION: CgLocalWriteAmlData 300 * 301 * PARAMETERS: Op - Current parse op 302 * Buffer - Buffer to write 303 * Length - Size of data in buffer 304 * 305 * RETURN: None 306 * 307 * DESCRIPTION: Write a buffer of AML data to the AML output file. 308 * 309 ******************************************************************************/ 310 311 void 312 CgLocalWriteAmlData ( 313 ACPI_PARSE_OBJECT *Op, 314 void *Buffer, 315 UINT32 Length) 316 { 317 318 /* Write the raw data to the AML file */ 319 320 FlWriteFile (ASL_FILE_AML_OUTPUT, Buffer, Length); 321 322 /* Update the final AML length for this node (used for listings) */ 323 324 if (Op) 325 { 326 Op->Asl.FinalAmlLength += Length; 327 } 328 } 329 330 331 /******************************************************************************* 332 * 333 * FUNCTION: CgWriteAmlOpcode 334 * 335 * PARAMETERS: Op - Parse node with an AML opcode 336 * 337 * RETURN: None. 338 * 339 * DESCRIPTION: Write the AML opcode corresponding to a parse node. 340 * 341 ******************************************************************************/ 342 343 static void 344 CgWriteAmlOpcode ( 345 ACPI_PARSE_OBJECT *Op) 346 { 347 UINT8 PkgLenFirstByte; 348 UINT32 i; 349 union { 350 UINT16 Opcode; 351 UINT8 OpcodeBytes[2]; 352 } Aml; 353 union { 354 UINT32 Len; 355 UINT8 LenBytes[4]; 356 } PkgLen; 357 358 359 /* We expect some DEFAULT_ARGs, just ignore them */ 360 361 if (Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) 362 { 363 return; 364 } 365 366 /* 367 * Before printing the bytecode, generate comment byte codes 368 * associated with this node. 369 */ 370 if (AcpiGbl_CaptureComments) 371 { 372 CgWriteAmlComment(Op); 373 } 374 375 switch (Op->Asl.AmlOpcode) 376 { 377 case AML_UNASSIGNED_OPCODE: 378 379 /* These opcodes should not get here */ 380 381 printf ("Found a node with an unassigned AML opcode\n"); 382 FlPrintFile (ASL_FILE_STDERR, 383 "Found a node with an unassigned AML opcode\n"); 384 return; 385 386 case AML_INT_RESERVEDFIELD_OP: 387 388 /* Special opcodes for within a field definition */ 389 390 Aml.Opcode = AML_FIELD_OFFSET_OP; 391 break; 392 393 case AML_INT_ACCESSFIELD_OP: 394 395 Aml.Opcode = AML_FIELD_ACCESS_OP; 396 break; 397 398 case AML_INT_CONNECTION_OP: 399 400 Aml.Opcode = AML_FIELD_CONNECTION_OP; 401 break; 402 403 default: 404 405 Aml.Opcode = Op->Asl.AmlOpcode; 406 break; 407 } 408 409 410 switch (Aml.Opcode) 411 { 412 case AML_PACKAGE_LENGTH: 413 414 /* Value is the length to be encoded (Used in field definitions) */ 415 416 PkgLen.Len = (UINT32) Op->Asl.Value.Integer; 417 break; 418 419 default: 420 421 /* Check for two-byte opcode */ 422 423 if (Aml.Opcode > 0x00FF) 424 { 425 /* Write the high byte first */ 426 427 CgLocalWriteAmlData (Op, &Aml.OpcodeBytes[1], 1); 428 } 429 430 CgLocalWriteAmlData (Op, &Aml.OpcodeBytes[0], 1); 431 432 /* Subtreelength doesn't include length of package length bytes */ 433 434 PkgLen.Len = Op->Asl.AmlSubtreeLength + Op->Asl.AmlPkgLenBytes; 435 break; 436 } 437 438 /* Does this opcode have an associated "PackageLength" field? */ 439 440 if (Op->Asl.CompileFlags & OP_AML_PACKAGE) 441 { 442 if (Op->Asl.AmlPkgLenBytes == 1) 443 { 444 /* Simplest case -- no bytes to follow, just write the count */ 445 446 CgLocalWriteAmlData (Op, &PkgLen.LenBytes[0], 1); 447 } 448 else if (Op->Asl.AmlPkgLenBytes != 0) 449 { 450 /* 451 * Encode the "bytes to follow" in the first byte, top two bits. 452 * The low-order nybble of the length is in the bottom 4 bits 453 */ 454 PkgLenFirstByte = (UINT8) 455 (((UINT32) (Op->Asl.AmlPkgLenBytes - 1) << 6) | 456 (PkgLen.LenBytes[0] & 0x0F)); 457 458 CgLocalWriteAmlData (Op, &PkgLenFirstByte, 1); 459 460 /* 461 * Shift the length over by the 4 bits we just stuffed 462 * in the first byte 463 */ 464 PkgLen.Len >>= 4; 465 466 /* 467 * Now we can write the remaining bytes - 468 * either 1, 2, or 3 bytes 469 */ 470 for (i = 0; i < (UINT32) (Op->Asl.AmlPkgLenBytes - 1); i++) 471 { 472 CgLocalWriteAmlData (Op, &PkgLen.LenBytes[i], 1); 473 } 474 } 475 } 476 477 switch (Aml.Opcode) 478 { 479 case AML_BYTE_OP: 480 481 CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 1); 482 break; 483 484 case AML_WORD_OP: 485 486 CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 2); 487 break; 488 489 case AML_DWORD_OP: 490 491 CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 4); 492 break; 493 494 case AML_QWORD_OP: 495 496 CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 8); 497 break; 498 499 case AML_STRING_OP: 500 501 CgLocalWriteAmlData (Op, Op->Asl.Value.String, Op->Asl.AmlLength); 502 break; 503 504 default: 505 506 /* All data opcodes must appear above */ 507 508 break; 509 } 510 } 511 512 513 /******************************************************************************* 514 * 515 * FUNCTION: CgWriteTableHeader 516 * 517 * PARAMETERS: Op - The DEFINITIONBLOCK node 518 * 519 * RETURN: None 520 * 521 * DESCRIPTION: Write a table header corresponding to the DEFINITIONBLOCK 522 * 523 * NOTE: Input strings should be validated before this function is invoked. 524 * 525 ******************************************************************************/ 526 527 static void 528 CgWriteTableHeader ( 529 ACPI_PARSE_OBJECT *Op) 530 { 531 ACPI_PARSE_OBJECT *Child; 532 UINT32 CommentLength; 533 ACPI_COMMENT_NODE *Current; 534 535 536 memset (&AslGbl_TableHeader, 0, sizeof (ACPI_TABLE_HEADER)); 537 538 /* AML filename */ 539 540 Child = Op->Asl.Child; 541 542 /* Signature */ 543 544 Child = Child->Asl.Next; 545 546 /* 547 * For ASL-/ASL+ converter: replace the table signature with 548 * "XXXX" and save the original table signature. This results in an AML 549 * file with the signature "XXXX". The converter should remove this AML 550 * file. In the event where this AML file does not get deleted, the 551 * "XXXX" table signature prevents this AML file from running on the AML 552 * interpreter. 553 */ 554 if (AcpiGbl_CaptureComments) 555 { 556 ACPI_COPY_NAMESEG (AcpiGbl_TableSig, Child->Asl.Value.String); 557 Child->Asl.Value.String = ACPI_SIG_XXXX; 558 } 559 560 ACPI_COPY_NAMESEG (AslGbl_TableHeader.Signature, Child->Asl.Value.String); 561 562 /* Revision */ 563 564 Child = Child->Asl.Next; 565 AslGbl_TableHeader.Revision = (UINT8) Child->Asl.Value.Integer; 566 567 /* Command-line Revision override */ 568 569 if (AslGbl_RevisionOverride) 570 { 571 AslGbl_TableHeader.Revision = AslGbl_RevisionOverride; 572 } 573 574 /* OEMID */ 575 576 Child = Child->Asl.Next; 577 memcpy (AslGbl_TableHeader.OemId, Child->Asl.Value.String, 578 strlen (Child->Asl.Value.String)); 579 580 /* OEM TableID */ 581 582 Child = Child->Asl.Next; 583 memcpy (AslGbl_TableHeader.OemTableId, Child->Asl.Value.String, 584 strlen (Child->Asl.Value.String)); 585 586 /* OEM Revision */ 587 588 Child = Child->Asl.Next; 589 AslGbl_TableHeader.OemRevision = (UINT32) Child->Asl.Value.Integer; 590 591 /* Compiler ID */ 592 593 ACPI_COPY_NAMESEG (AslGbl_TableHeader.AslCompilerId, ASL_CREATOR_ID); 594 595 /* Compiler version */ 596 597 AslGbl_TableHeader.AslCompilerRevision = ACPI_CA_VERSION; 598 599 /* Table length. Checksum zero for now, will rewrite later */ 600 601 AslGbl_TableHeader.Length = sizeof (ACPI_TABLE_HEADER) + 602 Op->Asl.AmlSubtreeLength; 603 604 /* Calculate the comment lengths for this definition block parseOp */ 605 606 if (AcpiGbl_CaptureComments) 607 { 608 CvDbgPrint ("Calculating comment lengths for %s in write header\n", 609 Op->Asl.ParseOpName); 610 611 /* 612 * Take the filename without extensions, add 3 for the new extension 613 * and another 3 for the a908 bytecode and null terminator. 614 */ 615 AslGbl_TableHeader.Length += strrchr (AslGbl_ParseTreeRoot->Asl.Filename, '.') 616 - AslGbl_ParseTreeRoot->Asl.Filename + 1 + 3 + 3; 617 618 Op->Asl.AmlSubtreeLength += 619 strlen (AslGbl_ParseTreeRoot->Asl.Filename) + 3; 620 621 CvDbgPrint (" Length: %u\n", 622 (UINT32) strlen (AslGbl_ParseTreeRoot->Asl.Filename) + 3); 623 624 if (Op->Asl.CommentList) 625 { 626 Current = Op->Asl.CommentList; 627 while (Current) 628 { 629 CommentLength = strlen (Current->Comment)+3; 630 CvDbgPrint ("Length of standard comment): %d\n", CommentLength); 631 CvDbgPrint (" Comment string: %s\n\n", Current->Comment); 632 AslGbl_TableHeader.Length += CommentLength; 633 Op->Asl.AmlSubtreeLength += CommentLength; 634 Current = Current->Next; 635 CvDbgPrint (" Length: %u\n", CommentLength); 636 } 637 } 638 if (Op->Asl.CloseBraceComment) 639 { 640 CommentLength = strlen (Op->Asl.CloseBraceComment)+3; 641 CvDbgPrint ("Length of inline comment +3: %d\n", CommentLength); 642 CvDbgPrint (" Comment string: %s\n\n", Op->Asl.CloseBraceComment); 643 AslGbl_TableHeader.Length += CommentLength; 644 Op->Asl.AmlSubtreeLength += CommentLength; 645 CvDbgPrint (" Length: %u\n", CommentLength); 646 } 647 } 648 649 AslGbl_TableHeader.Checksum = 0; 650 Op->Asl.FinalAmlOffset = ftell (AslGbl_Files[ASL_FILE_AML_OUTPUT].Handle); 651 652 /* Write entire header and clear the table header global */ 653 654 CgLocalWriteAmlData (Op, &AslGbl_TableHeader, sizeof (ACPI_TABLE_HEADER)); 655 memset (&AslGbl_TableHeader, 0, sizeof (ACPI_TABLE_HEADER)); 656 } 657 658 659 /******************************************************************************* 660 * 661 * FUNCTION: CgUpdateHeader 662 * 663 * PARAMETERS: Op - Op for the Definition Block 664 * 665 * RETURN: None. 666 * 667 * DESCRIPTION: Complete the ACPI table by calculating the checksum and 668 * re-writing the header for the input definition block 669 * 670 ******************************************************************************/ 671 672 static void 673 CgUpdateHeader ( 674 ACPI_PARSE_OBJECT *Op) 675 { 676 signed char Sum; 677 UINT32 i; 678 UINT32 Length; 679 UINT8 FileByte; 680 UINT8 Checksum; 681 682 683 /* Calculate the checksum over the entire definition block */ 684 685 Sum = 0; 686 Length = sizeof (ACPI_TABLE_HEADER) + Op->Asl.AmlSubtreeLength; 687 FlSeekFile (ASL_FILE_AML_OUTPUT, Op->Asl.FinalAmlOffset); 688 689 for (i = 0; i < Length; i++) 690 { 691 if (FlReadFile (ASL_FILE_AML_OUTPUT, &FileByte, 1) != AE_OK) 692 { 693 AslError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL, NULL, 694 "Table length is greater than size of the input file"); 695 return; 696 } 697 698 Sum = (signed char) (Sum + FileByte); 699 } 700 701 Checksum = (UINT8) (0 - Sum); 702 703 /* Re-write the checksum byte */ 704 705 FlSeekFile (ASL_FILE_AML_OUTPUT, Op->Asl.FinalAmlOffset + 706 ACPI_OFFSET (ACPI_TABLE_HEADER, Checksum)); 707 708 FlWriteFile (ASL_FILE_AML_OUTPUT, &Checksum, 1); 709 710 /* 711 * Seek to the end of the file. This is done to support multiple file 712 * compilation. Doing this simplifies other parts of the codebase because 713 * it eliminates the need to seek for a different starting place. 714 */ 715 FlSeekFile (ASL_FILE_AML_OUTPUT, Op->Asl.FinalAmlOffset + Length); 716 } 717 718 719 /******************************************************************************* 720 * 721 * FUNCTION: CgWriteNode 722 * 723 * PARAMETERS: Op - Parse node to write. 724 * 725 * RETURN: None. 726 * 727 * DESCRIPTION: Write the AML that corresponds to a parse node. 728 * 729 ******************************************************************************/ 730 731 static void 732 CgWriteNode ( 733 ACPI_PARSE_OBJECT *Op) 734 { 735 ASL_RESOURCE_NODE *Rnode; 736 737 738 /* Write all comments here. */ 739 740 if (AcpiGbl_CaptureComments) 741 { 742 CgWriteAmlComment(Op); 743 } 744 745 /* Always check for DEFAULT_ARG and other "Noop" nodes */ 746 /* TBD: this may not be the best place for this check */ 747 748 if ((Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) || 749 (Op->Asl.ParseOpcode == PARSEOP_INCLUDE) || 750 (Op->Asl.ParseOpcode == PARSEOP_INCLUDE_END)) 751 { 752 return; 753 } 754 755 Op->Asl.FinalAmlLength = 0; 756 757 switch (Op->Asl.AmlOpcode) 758 { 759 case AML_RAW_DATA_BYTE: 760 case AML_RAW_DATA_WORD: 761 case AML_RAW_DATA_DWORD: 762 case AML_RAW_DATA_QWORD: 763 764 CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, Op->Asl.AmlLength); 765 return; 766 767 768 case AML_RAW_DATA_BUFFER: 769 770 CgLocalWriteAmlData (Op, Op->Asl.Value.Buffer, Op->Asl.AmlLength); 771 return; 772 773 774 case AML_RAW_DATA_CHAIN: 775 776 Rnode = ACPI_CAST_PTR (ASL_RESOURCE_NODE, Op->Asl.Value.Buffer); 777 while (Rnode) 778 { 779 CgLocalWriteAmlData (Op, Rnode->Buffer, Rnode->BufferLength); 780 Rnode = Rnode->Next; 781 } 782 return; 783 784 default: 785 786 /* Internal data opcodes must all appear above */ 787 788 break; 789 } 790 791 switch (Op->Asl.ParseOpcode) 792 { 793 case PARSEOP_DEFAULT_ARG: 794 795 break; 796 797 case PARSEOP_DEFINITION_BLOCK: 798 799 CgWriteTableHeader (Op); 800 if (AcpiGbl_CaptureComments) 801 { 802 CgWriteAmlDefBlockComment (Op); 803 } 804 break; 805 806 case PARSEOP_NAMESEG: 807 case PARSEOP_NAMESTRING: 808 case PARSEOP_METHODCALL: 809 810 CgLocalWriteAmlData (Op, Op->Asl.Value.String, Op->Asl.AmlLength); 811 break; 812 813 default: 814 815 CgWriteAmlOpcode (Op); 816 break; 817 } 818 } 819