1 /******************************************************************************
3 * Module Name: prutils - Preprocessor utilities
5 *****************************************************************************/
7 /******************************************************************************
11 * Some or all of this work - Copyright (c) 1999 - 2012, Intel Corp.
12 * All rights reserved.
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
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
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;
37 * The above copyright and patent license is granted only if the following
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.
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
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
72 * 3.4. Intel retains all right, title, and interest in and to the Original
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.
80 * 4. Disclaimer and Export Compliance
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
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
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.
114 *****************************************************************************/
116 #include "aslcompiler.h"
117 #include "dtcompiler.h"
120 #define _COMPONENT ASL_PREPROCESSOR
121 ACPI_MODULE_NAME ("prutils")
124 /******************************************************************************
126 * FUNCTION: PrGetNextToken
128 * PARAMETERS: Buffer - Current line buffer
129 * MatchString - String with valid token delimiters
130 * Next - Set to next possible token in buffer
132 * RETURN: Next token (null-terminated). Modifies the input line.
133 * Remainder of line is stored in *Next.
135 * DESCRIPTION: Local implementation of strtok() with local storage for the
136 * next pointer. Not only thread-safe, but allows multiple
137 * parsing of substrings such as expressions.
139 *****************************************************************************/
152 /* Use Next if it is valid */
161 /* Skip any leading delimiters */
165 if (strchr (MatchString, *Buffer))
175 /* Anything left on the line? */
185 /* Find the end of this token */
189 if (strchr (MatchString, *Buffer))
207 /*******************************************************************************
211 * PARAMETERS: Level - Seriousness (Warning/error, etc.)
212 * MessageId - Index into global message buffer
213 * Column - Column in current line
217 * DESCRIPTION: Preprocessor error reporting. Front end to AslCommonError2
219 ******************************************************************************/
228 AcpiOsPrintf ("%s (%u) : %s", Gbl_Files[ASL_FILE_INPUT].Filename,
229 Gbl_CurrentLineNumber, Gbl_CurrentLineBuffer);
238 /* TBD: Need Logical line number? */
240 AslCommonError2 (Level, MessageId,
241 Gbl_CurrentLineNumber, Column,
242 Gbl_CurrentLineBuffer,
243 Gbl_Files[ASL_FILE_INPUT].Filename, "Preprocessor");
245 Gbl_PreprocessorError = TRUE;
249 /*******************************************************************************
251 * FUNCTION: PrReplaceData
253 * PARAMETERS: Buffer - Original(target) buffer pointer
254 * LengthToRemove - Length to be removed from target buffer
255 * BufferToAdd - Data to be inserted into target buffer
256 * LengthToAdd - Length of BufferToAdd
260 * DESCRIPTION: Generic buffer data replacement.
262 ******************************************************************************/
267 UINT32 LengthToRemove,
274 /* Buffer is a string, so the length must include the terminating zero */
276 BufferLength = strlen (Buffer) + 1;
278 if (LengthToRemove != LengthToAdd)
281 * Move some of the existing data
282 * 1) If adding more bytes than removing, make room for the new data
283 * 2) if removing more bytes than adding, delete the extra space
285 if (LengthToRemove > 0)
287 memmove ((Buffer + LengthToAdd), (Buffer + LengthToRemove),
288 (BufferLength - LengthToRemove));
292 /* Now we can move in the new data */
296 memmove (Buffer, BufferToAdd, LengthToAdd);
301 /*******************************************************************************
303 * FUNCTION: PrOpenIncludeFile
305 * PARAMETERS: Filename - Filename or pathname for include file
309 * DESCRIPTION: Open an include file and push it on the input file stack.
311 ******************************************************************************/
318 ASL_INCLUDE_DIR *NextDir;
321 /* Start the actual include file on the next line */
323 Gbl_CurrentLineOffset++;
325 /* Attempt to open the include file */
326 /* If the file specifies an absolute path, just open it */
328 if ((Filename[0] == '/') ||
329 (Filename[0] == '\\') ||
330 (Filename[1] == ':'))
332 IncludeFile = PrOpenIncludeWithPrefix ("", Filename);
341 * The include filename is not an absolute path.
343 * First, search for the file within the "local" directory -- meaning
344 * the same directory that contains the source file.
346 * Construct the file pathname from the global directory name.
348 IncludeFile = PrOpenIncludeWithPrefix (Gbl_DirectoryPath, Filename);
355 * Second, search for the file within the (possibly multiple)
356 * directories specified by the -I option on the command line.
358 NextDir = Gbl_IncludeDirList;
361 IncludeFile = PrOpenIncludeWithPrefix (NextDir->Dir, Filename);
367 NextDir = NextDir->Next;
370 /* We could not open the include file after trying very hard */
373 sprintf (Gbl_MainTokenBuffer, "%s, %s", Filename, strerror (errno));
374 PrError (ASL_ERROR, ASL_MSG_INCLUDE_FILE_OPEN, 0);
378 /*******************************************************************************
380 * FUNCTION: FlOpenIncludeWithPrefix
382 * PARAMETERS: PrefixDir - Prefix directory pathname. Can be a zero
384 * Filename - The include filename from the source ASL.
386 * RETURN: Valid file descriptor if successful. Null otherwise.
388 * DESCRIPTION: Open an include file and push it on the input file stack.
390 ******************************************************************************/
393 PrOpenIncludeWithPrefix (
401 /* Build the full pathname to the file */
403 Pathname = FlMergePathnames (PrefixDir, Filename);
405 DbgPrint (ASL_PARSE_OUTPUT, PR_PREFIX_ID
406 "Include: Opening file - \"%s\"\n",
407 Gbl_CurrentLineNumber, Pathname);
409 /* Attempt to open the file, push if successful */
411 IncludeFile = fopen (Pathname, "r");
414 /* Push the include file on the open input file stack */
416 PrPushInputFileStack (IncludeFile, Pathname);
417 return (IncludeFile);
420 ACPI_FREE (Pathname);
425 /*******************************************************************************
427 * FUNCTION: AslPushInputFileStack
429 * PARAMETERS: InputFile - Open file pointer
430 * Filename - Name of the file
434 * DESCRIPTION: Push the InputFile onto the file stack, and point the parser
435 * to this file. Called when an include file is successfully
438 ******************************************************************************/
441 PrPushInputFileStack (
448 /* Save the current state in an Fnode */
450 Fnode = UtLocalCalloc (sizeof (PR_FILE_NODE));
452 Fnode->File = Gbl_Files[ASL_FILE_INPUT].Handle;
453 Fnode->Next = Gbl_InputFileList;
454 Fnode->Filename = Gbl_Files[ASL_FILE_INPUT].Filename;
455 Fnode->CurrentLineNumber = Gbl_CurrentLineNumber;
457 /* Push it on the stack */
459 Gbl_InputFileList = Fnode;
461 DbgPrint (ASL_PARSE_OUTPUT, PR_PREFIX_ID
462 "Push InputFile Stack: handle %p\n\n",
463 Gbl_CurrentLineNumber, InputFile);
465 /* Reset the global line count and filename */
467 Gbl_Files[ASL_FILE_INPUT].Filename = Filename;
468 Gbl_Files[ASL_FILE_INPUT].Handle = InputFile;
469 Gbl_PreviousLineNumber = 0;
470 Gbl_CurrentLineNumber = 0;
472 /* Emit a new #line directive for the include file */
474 FlPrintFile (ASL_FILE_PREPROCESSOR, "#line %u \"%s\"\n",
479 /*******************************************************************************
481 * FUNCTION: AslPopInputFileStack
485 * RETURN: 0 if a node was popped, -1 otherwise
487 * DESCRIPTION: Pop the top of the input file stack and point the parser to
488 * the saved parse buffer contained in the fnode. Also, set the
489 * global line counters to the saved values. This function is
490 * called when an include file reaches EOF.
492 ******************************************************************************/
495 PrPopInputFileStack (
501 Fnode = Gbl_InputFileList;
502 DbgPrint (ASL_PARSE_OUTPUT, "\n" PR_PREFIX_ID
503 "Pop InputFile Stack, Fnode %p\n\n",
504 Gbl_CurrentLineNumber, Fnode);
511 /* Close the current include file */
513 fclose (Gbl_Files[ASL_FILE_INPUT].Handle);
515 /* Update the top-of-stack */
517 Gbl_InputFileList = Fnode->Next;
519 /* Reset global line counter and filename */
521 Gbl_Files[ASL_FILE_INPUT].Filename = Fnode->Filename;
522 Gbl_Files[ASL_FILE_INPUT].Handle = Fnode->File;
523 Gbl_CurrentLineNumber = Fnode->CurrentLineNumber;
524 Gbl_PreviousLineNumber = 0;
526 /* Emit a new #line directive after the include file */
528 FlPrintFile (ASL_FILE_PREPROCESSOR, "#line %u \"%s\"\n",
529 Gbl_CurrentLineNumber + 1, Fnode->Filename);
531 /* All done with this node */