1 /******************************************************************************
3 * Module Name: prutils - Preprocessor utilities
5 *****************************************************************************/
8 * Copyright (C) 2000 - 2015, Intel Corp.
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23 * of any contributors may be used to endorse or promote products derived
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44 #include "aslcompiler.h"
45 #include "dtcompiler.h"
48 #define _COMPONENT ASL_PREPROCESSOR
49 ACPI_MODULE_NAME ("prutils")
52 /******************************************************************************
54 * FUNCTION: PrGetNextToken
56 * PARAMETERS: Buffer - Current line buffer
57 * MatchString - String with valid token delimiters
58 * Next - Set to next possible token in buffer
60 * RETURN: Next token (null-terminated). Modifies the input line.
61 * Remainder of line is stored in *Next.
63 * DESCRIPTION: Local implementation of strtok() with local storage for the
64 * next pointer. Not only thread-safe, but allows multiple
65 * parsing of substrings such as expressions.
67 *****************************************************************************/
80 /* Use Next if it is valid */
89 /* Skip any leading delimiters */
93 if (strchr (MatchString, *Buffer))
103 /* Anything left on the line? */
113 /* Find the end of this token */
117 if (strchr (MatchString, *Buffer))
135 /*******************************************************************************
139 * PARAMETERS: Level - Seriousness (Warning/error, etc.)
140 * MessageId - Index into global message buffer
141 * Column - Column in current line
145 * DESCRIPTION: Preprocessor error reporting. Front end to AslCommonError2
147 ******************************************************************************/
156 AcpiOsPrintf ("%s (%u) : %s", Gbl_Files[ASL_FILE_INPUT].Filename,
157 Gbl_CurrentLineNumber, Gbl_CurrentLineBuffer);
166 /* TBD: Need Logical line number? */
168 AslCommonError2 (Level, MessageId,
169 Gbl_CurrentLineNumber, Column,
170 Gbl_CurrentLineBuffer,
171 Gbl_Files[ASL_FILE_INPUT].Filename, "Preprocessor");
173 Gbl_PreprocessorError = TRUE;
177 /*******************************************************************************
179 * FUNCTION: PrReplaceData
181 * PARAMETERS: Buffer - Original(target) buffer pointer
182 * LengthToRemove - Length to be removed from target buffer
183 * BufferToAdd - Data to be inserted into target buffer
184 * LengthToAdd - Length of BufferToAdd
188 * DESCRIPTION: Generic buffer data replacement.
190 ******************************************************************************/
195 UINT32 LengthToRemove,
202 /* Buffer is a string, so the length must include the terminating zero */
204 BufferLength = strlen (Buffer) + 1;
206 if (LengthToRemove != LengthToAdd)
209 * Move some of the existing data
210 * 1) If adding more bytes than removing, make room for the new data
211 * 2) if removing more bytes than adding, delete the extra space
213 if (LengthToRemove > 0)
215 memmove ((Buffer + LengthToAdd), (Buffer + LengthToRemove),
216 (BufferLength - LengthToRemove));
220 /* Now we can move in the new data */
224 memmove (Buffer, BufferToAdd, LengthToAdd);
229 /*******************************************************************************
231 * FUNCTION: PrOpenIncludeFile
233 * PARAMETERS: Filename - Filename or pathname for include file
237 * DESCRIPTION: Open an include file and push it on the input file stack.
239 ******************************************************************************/
248 ASL_INCLUDE_DIR *NextDir;
251 /* Start the actual include file on the next line */
253 Gbl_CurrentLineOffset++;
255 /* Attempt to open the include file */
256 /* If the file specifies an absolute path, just open it */
258 if ((Filename[0] == '/') ||
259 (Filename[0] == '\\') ||
260 (Filename[1] == ':'))
262 IncludeFile = PrOpenIncludeWithPrefix (
263 "", Filename, OpenMode, FullPathname);
268 return (IncludeFile);
272 * The include filename is not an absolute path.
274 * First, search for the file within the "local" directory -- meaning
275 * the same directory that contains the source file.
277 * Construct the file pathname from the global directory name.
279 IncludeFile = PrOpenIncludeWithPrefix (
280 Gbl_DirectoryPath, Filename, OpenMode, FullPathname);
283 return (IncludeFile);
287 * Second, search for the file within the (possibly multiple)
288 * directories specified by the -I option on the command line.
290 NextDir = Gbl_IncludeDirList;
293 IncludeFile = PrOpenIncludeWithPrefix (
294 NextDir->Dir, Filename, OpenMode, FullPathname);
297 return (IncludeFile);
300 NextDir = NextDir->Next;
303 /* We could not open the include file after trying very hard */
306 sprintf (Gbl_MainTokenBuffer, "%s, %s", Filename, strerror (errno));
307 PrError (ASL_ERROR, ASL_MSG_INCLUDE_FILE_OPEN, 0);
312 /*******************************************************************************
314 * FUNCTION: FlOpenIncludeWithPrefix
316 * PARAMETERS: PrefixDir - Prefix directory pathname. Can be a zero
318 * Filename - The include filename from the source ASL.
320 * RETURN: Valid file descriptor if successful. Null otherwise.
322 * DESCRIPTION: Open an include file and push it on the input file stack.
324 ******************************************************************************/
327 PrOpenIncludeWithPrefix (
337 /* Build the full pathname to the file */
339 Pathname = FlMergePathnames (PrefixDir, Filename);
341 DbgPrint (ASL_PARSE_OUTPUT, PR_PREFIX_ID
342 "Include: Opening file - \"%s\"\n",
343 Gbl_CurrentLineNumber, Pathname);
345 /* Attempt to open the file, push if successful */
347 IncludeFile = fopen (Pathname, OpenMode);
350 fprintf (stderr, "Could not open include file %s\n", Pathname);
354 /* Push the include file on the open input file stack */
356 PrPushInputFileStack (IncludeFile, Pathname);
357 *FullPathname = Pathname;
358 return (IncludeFile);
362 /*******************************************************************************
364 * FUNCTION: AslPushInputFileStack
366 * PARAMETERS: InputFile - Open file pointer
367 * Filename - Name of the file
371 * DESCRIPTION: Push the InputFile onto the file stack, and point the parser
372 * to this file. Called when an include file is successfully
375 ******************************************************************************/
378 PrPushInputFileStack (
385 /* Save the current state in an Fnode */
387 Fnode = UtLocalCalloc (sizeof (PR_FILE_NODE));
389 Fnode->File = Gbl_Files[ASL_FILE_INPUT].Handle;
390 Fnode->Next = Gbl_InputFileList;
391 Fnode->Filename = Gbl_Files[ASL_FILE_INPUT].Filename;
392 Fnode->CurrentLineNumber = Gbl_CurrentLineNumber;
394 /* Push it on the stack */
396 Gbl_InputFileList = Fnode;
398 DbgPrint (ASL_PARSE_OUTPUT, PR_PREFIX_ID
399 "Push InputFile Stack: handle %p\n\n",
400 Gbl_CurrentLineNumber, InputFile);
402 /* Reset the global line count and filename */
404 Gbl_Files[ASL_FILE_INPUT].Filename =
405 UtStringCacheCalloc (strlen (Filename) + 1);
406 strcpy (Gbl_Files[ASL_FILE_INPUT].Filename, Filename);
408 Gbl_Files[ASL_FILE_INPUT].Handle = InputFile;
409 Gbl_PreviousLineNumber = 0;
410 Gbl_CurrentLineNumber = 0;
412 /* Emit a new #line directive for the include file */
414 FlPrintFile (ASL_FILE_PREPROCESSOR, "#line %u \"%s\"\n", 1, Filename);
418 /*******************************************************************************
420 * FUNCTION: AslPopInputFileStack
424 * RETURN: 0 if a node was popped, -1 otherwise
426 * DESCRIPTION: Pop the top of the input file stack and point the parser to
427 * the saved parse buffer contained in the fnode. Also, set the
428 * global line counters to the saved values. This function is
429 * called when an include file reaches EOF.
431 ******************************************************************************/
434 PrPopInputFileStack (
440 Fnode = Gbl_InputFileList;
441 DbgPrint (ASL_PARSE_OUTPUT, "\n" PR_PREFIX_ID
442 "Pop InputFile Stack, Fnode %p\n\n",
443 Gbl_CurrentLineNumber, Fnode);
450 /* Close the current include file */
452 fclose (Gbl_Files[ASL_FILE_INPUT].Handle);
454 /* Update the top-of-stack */
456 Gbl_InputFileList = Fnode->Next;
458 /* Reset global line counter and filename */
460 Gbl_Files[ASL_FILE_INPUT].Filename = Fnode->Filename;
461 Gbl_Files[ASL_FILE_INPUT].Handle = Fnode->File;
462 Gbl_CurrentLineNumber = Fnode->CurrentLineNumber;
463 Gbl_PreviousLineNumber = 0;
465 /* Emit a new #line directive after the include file */
467 FlPrintFile (ASL_FILE_PREPROCESSOR, "#line %u \"%s\"\n",
468 Gbl_CurrentLineNumber + 1, Fnode->Filename);
470 /* All done with this node */