1 /******************************************************************************
3 * Module Name: prmacros - Preprocessor #define macro support
5 *****************************************************************************/
7 /******************************************************************************
11 * Some or all of this work - Copyright (c) 1999 - 2015, 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 ("prmacros")
124 /*******************************************************************************
126 * FUNCTION: PrDumpPredefinedNames
132 * DESCRIPTION: Dump the list of #defines. Used as the preprocessor starts, to
133 * display the names that were defined on the command line.
134 * Debug information only.
136 ******************************************************************************/
139 PrDumpPredefinedNames (
142 PR_DEFINE_INFO *DefineInfo;
145 DefineInfo = Gbl_DefineList;
148 DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID
149 "Predefined #define: %s->%s\n",
150 0, DefineInfo->Identifier, DefineInfo->Replacement);
152 DefineInfo = DefineInfo->Next;
157 /*******************************************************************************
159 * FUNCTION: PrAddDefine
161 * PARAMETERS: Identifier - Name to be replaced
162 * Replacement - Replacement for Identifier
163 * Persist - Keep define across multiple compiles?
165 * RETURN: A new define_info struct. NULL on error.
167 * DESCRIPTION: Add a new #define to the global list
169 ******************************************************************************/
177 char *IdentifierString;
178 char *ReplacementString;
179 PR_DEFINE_INFO *DefineInfo;
187 /* Check for already-defined first */
189 DefineInfo = PrMatchDefine (Identifier);
192 DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID,
193 "#define: name already exists: %s\n",
194 Gbl_CurrentLineNumber, Identifier);
197 * Name already exists. This is only an error if the target name
200 if (strcmp (Replacement, DefineInfo->Replacement))
202 PrError (ASL_ERROR, ASL_MSG_EXISTING_NAME,
203 THIS_TOKEN_OFFSET (Identifier));
211 /* Copy input strings */
213 IdentifierString = UtLocalCalloc (strlen (Identifier) + 1);
214 strcpy (IdentifierString, Identifier);
216 ReplacementString = UtLocalCalloc (strlen (Replacement) + 1);
217 strcpy (ReplacementString, Replacement);
219 /* Init and link new define info struct */
221 DefineInfo = UtLocalCalloc (sizeof (PR_DEFINE_INFO));
222 DefineInfo->Replacement = ReplacementString;
223 DefineInfo->Identifier = IdentifierString;
224 DefineInfo->Persist = Persist;
228 Gbl_DefineList->Previous = DefineInfo;
231 DefineInfo->Next = Gbl_DefineList;
232 Gbl_DefineList = DefineInfo;
237 /*******************************************************************************
239 * FUNCTION: PrRemoveDefine
241 * PARAMETERS: DefineName - Name of define to be removed
245 * DESCRIPTION: Implements #undef. Remove a #define if found in the global
246 * list. No error if the target of the #undef does not exist,
247 * as per the C #undef definition.
249 ******************************************************************************/
255 PR_DEFINE_INFO *DefineInfo;
258 /* Match name and delete the node */
260 DefineInfo = Gbl_DefineList;
263 if (!strcmp (DefineName, DefineInfo->Identifier))
265 /* Remove from linked list */
267 if (DefineInfo->Previous)
269 (DefineInfo->Previous)->Next = DefineInfo->Next;
273 Gbl_DefineList = DefineInfo->Next;
276 if (DefineInfo->Next)
278 (DefineInfo->Next)->Previous = DefineInfo->Previous;
285 DefineInfo = DefineInfo->Next;
289 * Name was not found. By definition of #undef, this is not
292 DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID
293 "#undef: could not find %s\n",
294 Gbl_CurrentLineNumber, DefineName);
298 /*******************************************************************************
300 * FUNCTION: PrMatchDefine
302 * PARAMETERS: MatchString - Name associated with the #define
304 * RETURN: Matched string if found. NULL otherwise.
306 * DESCRIPTION: Find a name in global #define list
308 ******************************************************************************/
314 PR_DEFINE_INFO *DefineInfo;
317 DefineInfo = Gbl_DefineList;
320 if (!strcmp (MatchString, DefineInfo->Identifier))
325 DefineInfo = DefineInfo->Next;
332 /*******************************************************************************
334 * FUNCTION: PrAddMacro
336 * PARAMETERS: Name - Start of the macro definition
337 * Next - "Next" buffer from GetNextToken
341 * DESCRIPTION: Add a new macro to the list of #defines. Handles argument
344 ******************************************************************************/
352 ACPI_SIZE TokenOffset;
353 ACPI_SIZE MacroBodyOffset;
354 PR_DEFINE_INFO *DefineInfo;
366 /* Find the end of the arguments list */
368 TokenOffset = Name - Gbl_MainTokenBuffer + strlen (Name) + 1;
371 BufferChar = Gbl_CurrentLineBuffer[TokenOffset];
372 if (BufferChar == '(')
376 else if (BufferChar == ')')
380 else if (BufferChar == 0)
382 PrError (ASL_ERROR, ASL_MSG_MACRO_SYNTAX, TokenOffset);
388 /* Found arg list end */
390 EndOfArgList = TokenOffset;
397 /* At this point, we know that we have a reasonable argument list */
399 Args = UtLocalCalloc (sizeof (PR_MACRO_ARG) * PR_MAX_MACRO_ARGS);
401 /* Get the macro argument names */
403 for (i = 0; i < PR_MAX_MACRO_ARGS; i++)
405 Token = PrGetNextToken (NULL, PR_MACRO_SEPARATORS, Next);
408 /* This is the case for a NULL macro body */
414 /* Don't go beyond the argument list */
416 TokenOffset = Token - Gbl_MainTokenBuffer + strlen (Token);
417 if (TokenOffset > EndOfArgList)
422 DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID
424 Gbl_CurrentLineNumber, Token);
426 Args[i].Name = UtLocalCalloc (strlen (Token) + 1);
427 strcpy (Args[i].Name, Token);
429 Args[i].UseCount = 0;
432 if (ArgCount >= PR_MAX_MACRO_ARGS)
434 PrError (ASL_ERROR, ASL_MSG_TOO_MANY_ARGUMENTS, TokenOffset);
439 /* Get the macro body. Token now points to start of body */
441 MacroBodyOffset = Token - Gbl_MainTokenBuffer;
443 /* Match each method arg in the macro body for later use */
445 Token = PrGetNextToken (NULL, PR_MACRO_SEPARATORS, Next);
448 /* Search the macro arg list for matching arg */
450 for (i = 0; Args[i].Name && (i < PR_MAX_MACRO_ARGS); i++)
453 * Save argument offset within macro body. This is the mechanism
454 * used to expand the macro upon invocation.
456 * Handles multiple instances of the same argument
458 if (!strcmp (Token, Args[i].Name))
460 UseCount = Args[i].UseCount;
462 Args[i].Offset[UseCount] = (Token - Gbl_MainTokenBuffer) - MacroBodyOffset;
464 DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID
465 "Macro Arg #%u: %s UseCount %u Offset %u \n",
466 Gbl_CurrentLineNumber, i, Token,
467 UseCount+1, Args[i].Offset[UseCount]);
470 if (Args[i].UseCount >= PR_MAX_ARG_INSTANCES)
472 PrError (ASL_ERROR, ASL_MSG_TOO_MANY_ARGUMENTS,
473 THIS_TOKEN_OFFSET (Token));
481 Token = PrGetNextToken (NULL, PR_MACRO_SEPARATORS, Next);
484 BodyInSource = &Gbl_CurrentLineBuffer[MacroBodyOffset];
489 /* Check if name is already defined first */
491 DefineInfo = PrMatchDefine (Name);
494 DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID
495 "#define: macro name already exists: %s\n",
496 Gbl_CurrentLineNumber, Name);
498 /* Error only if not exactly the same macro */
500 if (strcmp (DefineInfo->Body, BodyInSource) ||
501 (DefineInfo->ArgCount != ArgCount))
503 PrError (ASL_ERROR, ASL_MSG_EXISTING_NAME,
504 THIS_TOKEN_OFFSET (Name));
510 DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID
512 Gbl_CurrentLineNumber, BodyInSource);
514 /* Add macro to the #define list */
516 DefineInfo = PrAddDefine (Name, BodyInSource, FALSE);
519 Body = UtLocalCalloc (strlen (BodyInSource) + 1);
520 strcpy (Body, BodyInSource);
522 DefineInfo->Body = Body;
523 DefineInfo->Args = Args;
524 DefineInfo->ArgCount = ArgCount;
536 /*******************************************************************************
538 * FUNCTION: PrDoMacroInvocation
540 * PARAMETERS: TokenBuffer - Current line buffer
541 * MacroStart - Start of the macro invocation within
543 * DefineInfo - Info for this macro
544 * Next - "Next" buffer from GetNextToken
548 * DESCRIPTION: Expand a macro invocation
550 ******************************************************************************/
553 PrDoMacroInvocation (
556 PR_DEFINE_INFO *DefineInfo,
566 /* Take a copy of the macro body for expansion */
568 strcpy (Gbl_MacroTokenBuffer, DefineInfo->Body);
570 /* Replace each argument within the prototype body */
572 Args = DefineInfo->Args;
575 /* This macro has no arguments */
577 Token = PrGetNextToken (NULL, PR_MACRO_ARGUMENTS, Next);
583 TokenOffset = (MacroStart - TokenBuffer);
584 Length = Token - MacroStart + strlen (Token) + 1;
587 &Gbl_CurrentLineBuffer[TokenOffset], Length,
588 Gbl_MacroTokenBuffer, strlen (Gbl_MacroTokenBuffer));
594 /* Get the next argument from macro invocation */
596 Token = PrGetNextToken (NULL, PR_MACRO_SEPARATORS, Next);
602 /* Replace all instances of this argument */
604 for (i = 0; i < Args->UseCount; i++)
606 /* Offset zero indicates "arg not used" */
607 /* TBD: Not really needed now, with UseCount available */
609 if (Args->Offset[i] == 0)
615 &Gbl_MacroTokenBuffer[Args->Offset[i]], strlen (Args->Name),
616 Token, strlen (Token));
618 DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID
620 Gbl_CurrentLineNumber, Gbl_MacroTokenBuffer);
626 /* TBD: need to make sure macro was not invoked with too many arguments */
633 /* Replace the entire macro invocation with the expanded macro */
635 TokenOffset = (MacroStart - TokenBuffer);
636 Length = Token - MacroStart + strlen (Token) + 1;
639 &Gbl_CurrentLineBuffer[TokenOffset], Length,
640 Gbl_MacroTokenBuffer, strlen (Gbl_MacroTokenBuffer));
646 PrError (ASL_ERROR, ASL_MSG_INVALID_INVOCATION,
647 THIS_TOKEN_OFFSET (MacroStart));
649 DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID
650 "Bad macro invocation: %s \n",
651 Gbl_CurrentLineNumber, Gbl_MacroTokenBuffer);