1/****************************************************************************** 2 * 3 * Module Name: aslsupport.l - Flex/lex scanner C support routines. 4 * NOTE: Included into aslcompile.l, not compiled by itself. 5 * 6 *****************************************************************************/ 7 8/****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999 - 2023, 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 * Alternatively, you may choose to be licensed under the terms of the 118 * following license: 119 * 120 * Redistribution and use in source and binary forms, with or without 121 * modification, are permitted provided that the following conditions 122 * are met: 123 * 1. Redistributions of source code must retain the above copyright 124 * notice, this list of conditions, and the following disclaimer, 125 * without modification. 126 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 127 * substantially similar to the "NO WARRANTY" disclaimer below 128 * ("Disclaimer") and any redistribution must be conditioned upon 129 * including a substantially similar Disclaimer requirement for further 130 * binary redistribution. 131 * 3. Neither the names of the above-listed copyright holders nor the names 132 * of any contributors may be used to endorse or promote products derived 133 * from this software without specific prior written permission. 134 * 135 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 136 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 137 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 138 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 139 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 140 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 141 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 142 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 143 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 144 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 145 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 146 * 147 * Alternatively, you may choose to be licensed under the terms of the 148 * GNU General Public License ("GPL") version 2 as published by the Free 149 * Software Foundation. 150 * 151 *****************************************************************************/ 152 153/* Configuration */ 154 155#define ASL_SPACES_PER_TAB 4 156 157#define ASL_NORMAL_CHAR 0 158#define ASL_ESCAPE_SEQUENCE 1 159#define ASL_OCTAL_CONSTANT 2 160#define ASL_HEX_CONSTANT 3 161 162 163void 164yyerror (char const *s) 165{ 166 167 AcpiOsPrintf ("YYERROR: %s\n", s); 168} 169 170 171/******************************************************************************* 172 * 173 * FUNCTION: AslParserCleanup 174 * 175 * Used to delete the current buffer 176 * 177 ******************************************************************************/ 178 179void 180AslParserCleanup ( 181 void) 182{ 183 184 yy_delete_buffer (YY_CURRENT_BUFFER); 185} 186 187 188/******************************************************************************* 189 * 190 * FUNCTION: AslDoLineDirective 191 * 192 * PARAMETERS: None. Uses input() to access current source code line 193 * 194 * RETURN: Updates global line number and filename 195 * 196 * DESCRIPTION: Handle #line directives emitted by the preprocessor. 197 * 198 * The #line directive is emitted by the preprocessor, and is used to 199 * pass through line numbers from the original source code file to the 200 * preprocessor output file (.i). This allows any compiler-generated 201 * error messages to be displayed with the correct line number. 202 * 203 ******************************************************************************/ 204 205static void 206AslDoLineDirective ( 207 void) 208{ 209 int c; 210 char *Token; 211 UINT32 LineNumber; 212 char *Filename; 213 UINT32 i; 214 215 AslGbl_HasIncludeFiles = TRUE; 216 217 /* Eat the entire line that contains the #line directive */ 218 219 AslGbl_LineBufPtr = AslGbl_CurrentLineBuffer; 220 221 while ((c = input()) != '\n' && c != EOF) 222 { 223 *AslGbl_LineBufPtr = (char) c; 224 AslGbl_LineBufPtr++; 225 } 226 *AslGbl_LineBufPtr = 0; 227 228 /* First argument is the actual line number */ 229 230 Token = strtok (AslGbl_CurrentLineBuffer, " "); 231 if (!Token) 232 { 233 goto ResetAndExit; 234 } 235 236 /* First argument is the line number */ 237 238 LineNumber = (UINT32) UtDoConstant (Token); 239 240 /* Emit the appropriate number of newlines */ 241 242 AslGbl_CurrentColumn = 0; 243 if (LineNumber > AslGbl_CurrentLineNumber) 244 { 245 for (i = 0; i < (LineNumber - AslGbl_CurrentLineNumber); i++) 246 { 247 FlWriteFile (ASL_FILE_SOURCE_OUTPUT, "\n", 1); 248 AslGbl_CurrentColumn++; 249 } 250 } 251 252 FlSetLineNumber (LineNumber); 253 254 /* Second argument is the optional filename (in double quotes) */ 255 256 Token = strtok (NULL, " \""); 257 if (Token) 258 { 259 Filename = UtLocalCacheCalloc (strlen (Token) + 1); 260 strcpy (Filename, Token); 261 FlSetFilename (Filename); 262 } 263 264 /* Third argument is not supported at this time */ 265 266ResetAndExit: 267 268 /* Reset globals for a new line */ 269 270 AslGbl_CurrentLineOffset += AslGbl_CurrentColumn; 271 AslGbl_CurrentColumn = 0; 272 AslGbl_LineBufPtr = AslGbl_CurrentLineBuffer; 273} 274 275 276/******************************************************************************* 277 * 278 * FUNCTION: AslPopInputFileStack 279 * 280 * PARAMETERS: None 281 * 282 * RETURN: 0 if a node was popped, -1 otherwise 283 * 284 * DESCRIPTION: Pop the top of the input file stack and point the parser to 285 * the saved parse buffer contained in the fnode. Also, set the 286 * global line counters to the saved values. This function is 287 * called when an include file reaches EOF. 288 * 289 ******************************************************************************/ 290 291int 292AslPopInputFileStack ( 293 void) 294{ 295 ASL_FILE_NODE *Fnode; 296 297 298 AslGbl_PreviousIncludeFilename = AslGbl_Files[ASL_FILE_INPUT].Filename; 299 Fnode = AslGbl_IncludeFileStack; 300 DbgPrint (ASL_PARSE_OUTPUT, 301 "\nPop InputFile Stack, Fnode %p\n", Fnode); 302 303 DbgPrint (ASL_PARSE_OUTPUT, 304 "Include: Closing \"%s\"\n\n", AslGbl_Files[ASL_FILE_INPUT].Filename); 305 306 if (!Fnode) 307 { 308 return (-1); 309 } 310 311 /* Close the current include file */ 312 313 fclose (yyin); 314 315 /* Update the top-of-stack */ 316 317 AslGbl_IncludeFileStack = Fnode->Next; 318 319 /* Reset global line counter and filename */ 320 321 AslGbl_Files[ASL_FILE_INPUT].Filename = Fnode->Filename; 322 AslGbl_CurrentLineNumber = Fnode->CurrentLineNumber; 323 324 /* Point the parser to the popped file */ 325 326 yy_delete_buffer (YY_CURRENT_BUFFER); 327 yy_switch_to_buffer (Fnode->State); 328 329 /* All done with this node */ 330 331 ACPI_FREE (Fnode); 332 return (0); 333} 334 335 336/******************************************************************************* 337 * 338 * FUNCTION: AslPushInputFileStack 339 * 340 * PARAMETERS: InputFile - Open file pointer 341 * Filename - Name of the file 342 * 343 * RETURN: None 344 * 345 * DESCRIPTION: Push the InputFile onto the file stack, and point the parser 346 * to this file. Called when an include file is successfully 347 * opened. 348 * 349 ******************************************************************************/ 350 351void 352AslPushInputFileStack ( 353 FILE *InputFile, 354 char *Filename) 355{ 356 ASL_FILE_NODE *Fnode; 357 YY_BUFFER_STATE State; 358 359 360 /* Save the current state in an Fnode */ 361 362 Fnode = UtLocalCalloc (sizeof (ASL_FILE_NODE)); 363 364 Fnode->File = yyin; 365 Fnode->Next = AslGbl_IncludeFileStack; 366 Fnode->State = YY_CURRENT_BUFFER; 367 Fnode->Filename = AslGbl_Files[ASL_FILE_INPUT].Filename; 368 Fnode->CurrentLineNumber = AslGbl_CurrentLineNumber; 369 370 /* Push it on the stack */ 371 372 AslGbl_IncludeFileStack = Fnode; 373 374 /* Point the parser to this file */ 375 376 State = yy_create_buffer (InputFile, YY_BUF_SIZE); 377 yy_switch_to_buffer (State); 378 379 DbgPrint (ASL_PARSE_OUTPUT, 380 "\nPush InputFile Stack, returning %p\n\n", InputFile); 381 382 /* Reset the global line count and filename */ 383 384 AslGbl_Files[ASL_FILE_INPUT].Filename = 385 UtLocalCacheCalloc (strlen (Filename) + 1); 386 387 strcpy (AslGbl_Files[ASL_FILE_INPUT].Filename, Filename); 388 389 AslGbl_CurrentLineNumber = 1; 390 yyin = InputFile; 391 392 /* converter: reset the comment state to STANDARD_COMMENT */ 393 394 AslGbl_CommentState.CommentType = STANDARD_COMMENT; 395} 396 397 398/******************************************************************************* 399 * 400 * FUNCTION: AslResetCurrentLineBuffer 401 * 402 * PARAMETERS: None 403 * 404 * RETURN: None 405 * 406 * DESCRIPTION: Reset the Line Buffer to zero, increment global line numbers. 407 * 408 ******************************************************************************/ 409 410void 411AslResetCurrentLineBuffer ( 412 void) 413{ 414 415 if (AslGbl_Files[ASL_FILE_SOURCE_OUTPUT].Handle) 416 { 417 FlWriteFile (ASL_FILE_SOURCE_OUTPUT, AslGbl_CurrentLineBuffer, 418 AslGbl_LineBufPtr - AslGbl_CurrentLineBuffer); 419 } 420 421 AslGbl_CurrentLineOffset += AslGbl_CurrentColumn; 422 AslGbl_CurrentColumn = 0; 423 424 AslGbl_CurrentLineNumber++; 425 AslGbl_LogicalLineNumber++; 426 AslGbl_LineBufPtr = AslGbl_CurrentLineBuffer; 427} 428 429 430/******************************************************************************* 431 * 432 * FUNCTION: AslInsertLineBuffer 433 * 434 * PARAMETERS: SourceChar - One char from the input ASL source file 435 * 436 * RETURN: None 437 * 438 * DESCRIPTION: Put one character of the source file into the temp line buffer 439 * 440 ******************************************************************************/ 441 442void 443AslInsertLineBuffer ( 444 int SourceChar) 445{ 446 UINT32 i; 447 UINT32 Count = 1; 448 449 450 if (SourceChar == EOF) 451 { 452 return; 453 } 454 455 AslGbl_InputByteCount++; 456 457 /* Handle tabs. Convert to spaces */ 458 459 if (SourceChar == '\t') 460 { 461 SourceChar = ' '; 462 Count = ASL_SPACES_PER_TAB - 463 (AslGbl_CurrentColumn & (ASL_SPACES_PER_TAB-1)); 464 } 465 466 for (i = 0; i < Count; i++) 467 { 468 AslGbl_CurrentColumn++; 469 470 /* Insert the character into the line buffer */ 471 472 *AslGbl_LineBufPtr = (UINT8) SourceChar; 473 AslGbl_LineBufPtr++; 474 475 if (AslGbl_LineBufPtr > 476 (AslGbl_CurrentLineBuffer + (AslGbl_LineBufferSize - 1))) 477 { 478#if 0 479 /* 480 * Warning if we have split a long source line. 481 * <Probably overkill> 482 */ 483 sprintf (MsgBuffer, "Max %u", AslGbl_LineBufferSize); 484 AslCommonError (ASL_WARNING, ASL_MSG_LONG_LINE, 485 AslGbl_CurrentLineNumber, AslGbl_LogicalLineNumber, 486 AslGbl_CurrentLineOffset, AslGbl_CurrentColumn, 487 AslGbl_Files[ASL_FILE_INPUT].Filename, MsgBuffer); 488#endif 489 490 AslResetCurrentLineBuffer (); 491 } 492 else if (SourceChar == '\n') 493 { 494 /* End of line */ 495 496 AslResetCurrentLineBuffer (); 497 } 498 499 if (AcpiGbl_CaptureComments) 500 { 501 CvProcessCommentState ((char) SourceChar); 502 } 503 } 504} 505 506 507/******************************************************************************* 508 * 509 * FUNCTION: count 510 * 511 * PARAMETERS: yytext - Contains the matched keyword. 512 * Type - Keyword/Character type: 513 * 0 = anything except a keyword 514 * 1 = pseudo-keywords 515 * 2 = non-executable ASL keywords 516 * 3 = executable ASL keywords 517 * 518 * RETURN: None 519 * 520 * DESCRIPTION: Count keywords and put them into the line buffer 521 * 522 ******************************************************************************/ 523 524static void 525count ( 526 int Type) 527{ 528 char *p; 529 530 531 switch (Type) 532 { 533 case 2: 534 535 ++AslGbl_TotalKeywords; 536 ++AslGbl_TotalNamedObjects; 537 ++AslGbl_FilesList->TotalKeywords; 538 ++AslGbl_FilesList->TotalNamedObjects; 539 break; 540 541 case 3: 542 543 ++AslGbl_TotalKeywords; 544 ++AslGbl_TotalExecutableOpcodes; 545 ++AslGbl_FilesList->TotalKeywords; 546 ++AslGbl_FilesList->TotalExecutableOpcodes; 547 break; 548 549 default: 550 551 break; 552 } 553 554 for (p = yytext; *p != '\0'; p++) 555 { 556 AslInsertLineBuffer (*p); 557 *AslGbl_LineBufPtr = 0; 558 } 559} 560 561 562/******************************************************************************* 563 * 564 * FUNCTION: AslDoComment 565 * 566 * PARAMETERS: none 567 * 568 * RETURN: none 569 * 570 * DESCRIPTION: Process a standard comment. 571 * 572 ******************************************************************************/ 573 574static BOOLEAN 575AslDoComment ( 576 void) 577{ 578 int c; 579 int c1 = 0; 580 char *StringBuffer = AslGbl_MsgBuffer; 581 char *EndBuffer = AslGbl_MsgBuffer + ASL_MSG_BUFFER_SIZE; 582 ASL_COMMENT_STATE CurrentState = AslGbl_CommentState; /* to reference later on */ 583 584 585 AslInsertLineBuffer ('/'); 586 AslInsertLineBuffer ('*'); 587 if (AcpiGbl_CaptureComments && CurrentState.CaptureComments) 588 { 589 *StringBuffer = '/'; 590 ++StringBuffer; 591 *StringBuffer = '*'; 592 ++StringBuffer; 593 } 594 595loop: 596 597 /* Eat chars until end-of-comment */ 598 599 while (((c = input ()) != '*') && (c != EOF)) 600 { 601 AslInsertLineBuffer (c); 602 if (AcpiGbl_CaptureComments && CurrentState.CaptureComments) 603 { 604 *StringBuffer = (char) c; 605 ++StringBuffer; 606 } 607 c1 = c; 608 } 609 610 if (c == EOF) 611 { 612 goto EarlyEOF; 613 } 614 615 /* 616 * Check for nested comment -- can help catch cases where a previous 617 * comment was accidentally left unterminated 618 */ 619 if ((c1 == '/') && (c == '*')) 620 { 621 AslCommonError (ASL_WARNING, ASL_MSG_NESTED_COMMENT, 622 AslGbl_CurrentLineNumber, AslGbl_LogicalLineNumber, 623 AslGbl_InputByteCount, AslGbl_CurrentColumn, 624 AslGbl_Files[ASL_FILE_INPUT].Filename, NULL); 625 } 626 627 /* Comment is closed only if the NEXT character is a slash */ 628 629 AslInsertLineBuffer (c); 630 if (AcpiGbl_CaptureComments && CurrentState.CaptureComments) 631 { 632 *StringBuffer = (char) c; 633 ++StringBuffer; 634 } 635 636 if (((c1 = input ()) != '/') && (c1 != EOF)) 637 { 638 unput (c1); 639 goto loop; 640 } 641 642 if (c1 == EOF) 643 { 644 goto EarlyEOF; 645 } 646 if (StringBuffer > EndBuffer) 647 { 648 goto BufferOverflow; 649 } 650 651 AslInsertLineBuffer (c1); 652 CvProcessComment (CurrentState, StringBuffer, c1); 653 return (TRUE); 654 655 656EarlyEOF: 657 /* 658 * Premature End-Of-File 659 */ 660 AslCommonError (ASL_ERROR, ASL_MSG_EARLY_EOF, 661 AslGbl_CurrentLineNumber, AslGbl_LogicalLineNumber, 662 AslGbl_CurrentLineOffset, AslGbl_CurrentColumn, 663 AslGbl_Files[ASL_FILE_INPUT].Filename, NULL); 664 return (FALSE); 665 666 667BufferOverflow: 668 669 /* Comment was too long */ 670 671 AslCommonError (ASL_ERROR, ASL_MSG_STRING_LENGTH, 672 AslGbl_CurrentLineNumber, AslGbl_LogicalLineNumber, 673 AslGbl_CurrentLineOffset, AslGbl_CurrentColumn, 674 AslGbl_Files[ASL_FILE_INPUT].Filename, "Max length 4096"); 675 return (FALSE); 676 677} 678 679 680/******************************************************************************* 681 * 682 * FUNCTION: AslDoCommentType2 683 * 684 * PARAMETERS: none 685 * 686 * RETURN: none 687 * 688 * DESCRIPTION: Process a new "//" comment. Inline comments will be converted 689 * to "/ *" standard comments. 690 * 691 ******************************************************************************/ 692 693static BOOLEAN 694AslDoCommentType2 ( 695 void) 696{ 697 int c; 698 char *StringBuffer = AslGbl_MsgBuffer; 699 char *EndBuffer = AslGbl_MsgBuffer + ASL_MSG_BUFFER_SIZE; 700 ASL_COMMENT_STATE CurrentState = AslGbl_CommentState; 701 702 703 AslInsertLineBuffer ('/'); 704 705 if (AcpiGbl_CaptureComments && CurrentState.CaptureComments) 706 { 707 AslInsertLineBuffer ('*'); 708 *StringBuffer = '/'; 709 ++StringBuffer; 710 *StringBuffer = '*'; 711 ++StringBuffer; 712 } 713 else 714 { 715 AslInsertLineBuffer ('/'); 716 } 717 718 while (((c = input ()) != '\n') && (c != EOF)) 719 { 720 AslInsertLineBuffer (c); 721 if (AcpiGbl_CaptureComments && CurrentState.CaptureComments) 722 { 723 *StringBuffer = (char) c; 724 ++StringBuffer; 725 } 726 } 727 728 if (c == EOF) 729 { 730 /* End of file is OK, change to newline. Let parser detect EOF later */ 731 732 c = '\n'; 733 } 734 735 if (StringBuffer > EndBuffer) 736 { 737 goto BufferOverflow; 738 } 739 AslInsertLineBuffer (c); 740 741 CvProcessCommentType2 (CurrentState, StringBuffer); 742 return (TRUE); 743 744 745BufferOverflow: 746 747 /* Comment was too long */ 748 749 AslCommonError (ASL_ERROR, ASL_MSG_STRING_LENGTH, 750 AslGbl_CurrentLineNumber, AslGbl_LogicalLineNumber, 751 AslGbl_CurrentLineOffset, AslGbl_CurrentColumn, 752 AslGbl_Files[ASL_FILE_INPUT].Filename, "Max length 4096"); 753 return (FALSE); 754 755} 756 757 758/******************************************************************************* 759 * 760 * FUNCTION: AslDoStringLiteral 761 * 762 * PARAMETERS: none 763 * 764 * RETURN: none 765 * 766 * DESCRIPTION: Process a string literal (surrounded by quotes) 767 * 768 ******************************************************************************/ 769 770static char 771AslDoStringLiteral ( 772 void) 773{ 774 char *StringBuffer = AslGbl_MsgBuffer; 775 char *EndBuffer = AslGbl_MsgBuffer + ASL_MSG_BUFFER_SIZE; 776 char *CleanString; 777 int StringChar; 778 UINT32 State = ASL_NORMAL_CHAR; 779 UINT32 i = 0; 780 UINT8 Digit; 781 char ConvertBuffer[4]; 782 783 784 /* 785 * Eat chars until end-of-literal. 786 * NOTE: Put back the original surrounding quotes into the 787 * source line buffer. 788 */ 789 AslInsertLineBuffer ('\"'); 790 while ((StringChar = input()) != EOF) 791 { 792 AslInsertLineBuffer (StringChar); 793 794DoCharacter: 795 switch (State) 796 { 797 case ASL_NORMAL_CHAR: 798 799 switch (StringChar) 800 { 801 case '\\': 802 /* 803 * Special handling for backslash-escape sequence. We will 804 * toss the backslash and translate the escape char(s). 805 */ 806 State = ASL_ESCAPE_SEQUENCE; 807 continue; 808 809 case '\"': 810 811 /* String terminator */ 812 813 goto CompletedString; 814 815 default: 816 817 break; 818 } 819 break; 820 821 822 case ASL_ESCAPE_SEQUENCE: 823 824 State = ASL_NORMAL_CHAR; 825 switch (StringChar) 826 { 827 case 'a': 828 829 StringChar = 0x07; /* BELL */ 830 break; 831 832 case 'b': 833 834 StringChar = 0x08; /* BACKSPACE */ 835 break; 836 837 case 'f': 838 839 StringChar = 0x0C; /* FORMFEED */ 840 break; 841 842 case 'n': 843 844 StringChar = 0x0A; /* LINEFEED */ 845 break; 846 847 case 'r': 848 849 StringChar = 0x0D; /* CARRIAGE RETURN*/ 850 break; 851 852 case 't': 853 854 StringChar = 0x09; /* HORIZONTAL TAB */ 855 break; 856 857 case 'v': 858 859 StringChar = 0x0B; /* VERTICAL TAB */ 860 break; 861 862 case 'x': 863 864 State = ASL_HEX_CONSTANT; 865 i = 0; 866 continue; 867 868 case '\'': /* Single Quote */ 869 case '\"': /* Double Quote */ 870 case '\\': /* Backslash */ 871 872 break; 873 874 default: 875 876 /* Check for an octal digit (0-7) */ 877 878 if (ACPI_IS_OCTAL_DIGIT (StringChar)) 879 { 880 State = ASL_OCTAL_CONSTANT; 881 ConvertBuffer[0] = (char) StringChar; 882 i = 1; 883 continue; 884 } 885 886 /* Unknown escape sequence issue warning, but use the character */ 887 888 AslCommonError (ASL_WARNING, ASL_MSG_INVALID_ESCAPE, 889 AslGbl_CurrentLineNumber, AslGbl_LogicalLineNumber, 890 AslGbl_CurrentLineOffset, AslGbl_CurrentColumn, 891 AslGbl_Files[ASL_FILE_INPUT].Filename, NULL); 892 break; 893 } 894 break; 895 896 897 case ASL_OCTAL_CONSTANT: 898 899 /* Up to three octal digits allowed */ 900 901 if (!ACPI_IS_OCTAL_DIGIT (StringChar) || 902 (i > 2)) 903 { 904 /* 905 * Reached end of the constant. Convert the assembled ASCII 906 * string and resume processing of the next character 907 */ 908 ConvertBuffer[i] = 0; 909 Digit = (UINT8) strtoul (ConvertBuffer, NULL, 8); 910 911 /* Check for NULL or non-ascii character (ignore if so) */ 912 913 if ((Digit == 0) || (Digit > ACPI_ASCII_MAX)) 914 { 915 AslCommonError (ASL_WARNING, ASL_MSG_INVALID_STRING, 916 AslGbl_CurrentLineNumber, AslGbl_LogicalLineNumber, 917 AslGbl_CurrentLineOffset, AslGbl_CurrentColumn, 918 AslGbl_Files[ASL_FILE_INPUT].Filename, NULL); 919 } 920 else 921 { 922 *StringBuffer = (char) Digit; 923 StringBuffer++; 924 if (StringBuffer >= EndBuffer) 925 { 926 goto BufferOverflow; 927 } 928 } 929 930 State = ASL_NORMAL_CHAR; 931 goto DoCharacter; 932 break; 933 } 934 935 /* Append another digit of the constant */ 936 937 ConvertBuffer[i] = (char) StringChar; 938 i++; 939 continue; 940 941 case ASL_HEX_CONSTANT: 942 943 /* Up to two hex digits allowed */ 944 945 if (!isxdigit (StringChar) || 946 (i > 1)) 947 { 948 /* 949 * Reached end of the constant. Convert the assembled ASCII 950 * string and resume processing of the next character 951 */ 952 ConvertBuffer[i] = 0; 953 Digit = (UINT8) strtoul (ConvertBuffer, NULL, 16); 954 955 /* Check for NULL or non-ascii character (ignore if so) */ 956 957 if ((Digit == 0) || (Digit > ACPI_ASCII_MAX)) 958 { 959 AslCommonError (ASL_WARNING, ASL_MSG_INVALID_STRING, 960 AslGbl_CurrentLineNumber, AslGbl_LogicalLineNumber, 961 AslGbl_CurrentLineOffset, AslGbl_CurrentColumn, 962 AslGbl_Files[ASL_FILE_INPUT].Filename, NULL); 963 } 964 else 965 { 966 *StringBuffer = (char) Digit; 967 StringBuffer++; 968 if (StringBuffer >= EndBuffer) 969 { 970 goto BufferOverflow; 971 } 972 } 973 974 State = ASL_NORMAL_CHAR; 975 goto DoCharacter; 976 break; 977 } 978 979 /* Append another digit of the constant */ 980 981 ConvertBuffer[i] = (char) StringChar; 982 i++; 983 continue; 984 985 default: 986 987 break; 988 } 989 990 /* Save the finished character */ 991 992 *StringBuffer = (char) StringChar; 993 StringBuffer++; 994 if (StringBuffer >= EndBuffer) 995 { 996 goto BufferOverflow; 997 } 998 } 999 1000 /* 1001 * Premature End-Of-File 1002 */ 1003 AslCommonError (ASL_ERROR, ASL_MSG_EARLY_EOF, 1004 AslGbl_CurrentLineNumber, AslGbl_LogicalLineNumber, 1005 AslGbl_CurrentLineOffset, AslGbl_CurrentColumn, 1006 AslGbl_Files[ASL_FILE_INPUT].Filename, NULL); 1007 return (FALSE); 1008 1009 1010CompletedString: 1011 /* 1012 * Null terminate the input string and copy string to a new buffer 1013 */ 1014 *StringBuffer = 0; 1015 1016 CleanString = UtLocalCacheCalloc (strlen (AslGbl_MsgBuffer) + 1); 1017 strcpy (CleanString, AslGbl_MsgBuffer); 1018 AslCompilerlval.s = CleanString; 1019 return (TRUE); 1020 1021 1022BufferOverflow: 1023 1024 /* Literal was too long */ 1025 1026 AslCommonError (ASL_ERROR, ASL_MSG_STRING_LENGTH, 1027 AslGbl_CurrentLineNumber, AslGbl_LogicalLineNumber, 1028 AslGbl_CurrentLineOffset, AslGbl_CurrentColumn, 1029 AslGbl_Files[ASL_FILE_INPUT].Filename, "Max length 4096"); 1030 return (FALSE); 1031} 1032