1 /****************************************************************************** 2 * 3 * Module Name: preprocess.h - header for iASL Preprocessor 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 #define __PREPROCESS_H__ 153 154 #ifndef _PREPROCESS 155 #define _PREPROCESS 156 157 #undef PR_EXTERN 158 159 #ifdef _DECLARE_PR_GLOBALS 160 #define PR_EXTERN 161 #define PR_INIT_GLOBAL(a,b) (a)=(b) 162 #else 163 #define PR_EXTERN extern 164 #define PR_INIT_GLOBAL(a,b) (a) 165 #endif 166 167 168 /* 169 * Configuration 170 */ 171 #define PR_MAX_MACRO_ARGS 32 /* Max number of macro args */ 172 #define PR_MAX_ARG_INSTANCES 24 /* Max instances of any one arg */ 173 #define PR_LINES_PER_BLOCK 4096 /* Max input source lines per block */ 174 175 176 /* 177 * Local defines and macros 178 */ 179 #define PR_TOKEN_SEPARATORS " ,(){}\t\n" 180 #define PR_MACRO_SEPARATORS " ,(){}~!*/%+-<>=&^|\"\t\n" 181 #define PR_MACRO_ARGUMENTS " ,\t\n" 182 #define PR_EXPR_SEPARATORS " ,(){}~!*/%+-<>=&^|\"\t\n" 183 184 #define PR_PREFIX_ID "Pr(%.4u) - " /* Used for debug output */ 185 186 #define THIS_TOKEN_OFFSET(t) ((AslGbl_MainTokenBuffer - t) + 1) 187 188 189 /* 190 * Preprocessor structures 191 */ 192 typedef struct pr_macro_arg 193 { 194 char *Name; 195 UINT32 Offset[PR_MAX_ARG_INSTANCES]; 196 UINT16 UseCount; 197 198 } PR_MACRO_ARG; 199 200 typedef struct pr_define_info 201 { 202 struct pr_define_info *Previous; 203 struct pr_define_info *Next; 204 char *Identifier; 205 char *Replacement; 206 char *Body; /* Macro body */ 207 PR_MACRO_ARG *Args; /* Macro arg list */ 208 UINT16 ArgCount; /* Macro arg count */ 209 BOOLEAN Persist; /* Keep for entire compiler run */ 210 211 } PR_DEFINE_INFO; 212 213 typedef struct pr_directive_info 214 { 215 char *Name; /* Directive name */ 216 UINT8 ArgCount; /* Required # of args */ 217 218 } PR_DIRECTIVE_INFO; 219 220 typedef struct pr_operator_info 221 { 222 char *Op; 223 224 } PR_OPERATOR_INFO; 225 226 typedef struct pr_file_node 227 { 228 struct pr_file_node *Next; 229 FILE *File; 230 char *Filename; 231 UINT32 CurrentLineNumber; 232 233 } PR_FILE_NODE; 234 235 #define MAX_ARGUMENT_LENGTH 24 236 237 typedef struct directive_info 238 { 239 struct directive_info *Next; 240 char Argument[MAX_ARGUMENT_LENGTH]; 241 int Directive; 242 BOOLEAN IgnoringThisCodeBlock; 243 244 } DIRECTIVE_INFO; 245 246 247 /* 248 * Globals 249 */ 250 PR_EXTERN char PR_INIT_GLOBAL (*AslGbl_MainTokenBuffer, NULL); /* [ASL_LINE_BUFFER_SIZE]; */ 251 PR_EXTERN char PR_INIT_GLOBAL (*AslGbl_MacroTokenBuffer, NULL); /* [ASL_LINE_BUFFER_SIZE]; */ 252 PR_EXTERN char PR_INIT_GLOBAL (*AslGbl_ExpressionTokenBuffer, NULL); /* [ASL_LINE_BUFFER_SIZE]; */ 253 254 PR_EXTERN UINT32 AslGbl_PreprocessorLineNumber; 255 PR_EXTERN int AslGbl_IfDepth; 256 PR_EXTERN PR_FILE_NODE *AslGbl_InputFileList; 257 PR_EXTERN BOOLEAN PR_INIT_GLOBAL (AslGbl_PreprocessorError, FALSE); 258 PR_EXTERN BOOLEAN PR_INIT_GLOBAL (AslGbl_IgnoringThisCodeBlock, FALSE); 259 PR_EXTERN PR_DEFINE_INFO PR_INIT_GLOBAL (*AslGbl_DefineList, NULL); 260 PR_EXTERN DIRECTIVE_INFO PR_INIT_GLOBAL (*AslGbl_DirectiveStack, NULL); 261 262 #if 0 /* TBD for macros */ 263 PR_EXTERN char PR_INIT_GLOBAL (*XXXEvalBuffer, NULL); /* [ASL_LINE_BUFFER_SIZE]; */ 264 #endif 265 266 267 /* 268 * prscan - Preprocessor entry 269 */ 270 void 271 PrInitializePreprocessor ( 272 void); 273 274 void 275 PrInitializeGlobals ( 276 void); 277 278 void 279 PrTerminatePreprocessor ( 280 void); 281 282 void 283 PrDoPreprocess ( 284 void); 285 286 UINT64 287 PrIsDefined ( 288 char *Identifier); 289 290 UINT64 291 PrResolveDefine ( 292 char *Identifier); 293 294 int 295 PrInitLexer ( 296 char *String); 297 298 void 299 PrTerminateLexer ( 300 void); 301 302 303 /* 304 * prmacros - Support for #defines and macros 305 */ 306 void 307 PrDumpPredefinedNames ( 308 void); 309 310 PR_DEFINE_INFO * 311 PrAddDefine ( 312 char *Token, 313 char *Token2, 314 BOOLEAN Persist); 315 316 void 317 PrRemoveDefine ( 318 char *DefineName); 319 320 PR_DEFINE_INFO * 321 PrMatchDefine ( 322 char *MatchString); 323 324 void 325 PrAddMacro ( 326 char *Name, 327 char **Next); 328 329 void 330 PrDoMacroInvocation ( 331 char *TokenBuffer, 332 char *MacroStart, 333 PR_DEFINE_INFO *DefineInfo, 334 char **Next); 335 336 337 /* 338 * prexpress - #if expression support 339 */ 340 ACPI_STATUS 341 PrResolveIntegerExpression ( 342 char *Line, 343 UINT64 *ReturnValue); 344 345 char * 346 PrPrioritizeExpression ( 347 char *OriginalLine); 348 349 /* 350 * prparser - lex/yacc expression parser 351 */ 352 UINT64 353 PrEvaluateExpression ( 354 char *ExprString); 355 356 357 /* 358 * prutils - Preprocessor utilities 359 */ 360 char * 361 PrGetNextToken ( 362 char *Buffer, 363 char *MatchString, 364 char **Next); 365 366 void 367 PrError ( 368 UINT8 Level, 369 UINT16 MessageId, 370 UINT32 Column); 371 372 void 373 PrReplaceData ( 374 char *Buffer, 375 UINT32 LengthToRemove, 376 char *BufferToAdd, 377 UINT32 LengthToAdd); 378 379 FILE * 380 PrOpenIncludeFile ( 381 char *Filename, 382 char *OpenMode, 383 char **FullPathname); 384 385 FILE * 386 PrOpenIncludeWithPrefix ( 387 char *PrefixDir, 388 char *Filename, 389 char *OpenMode, 390 char **FullPathname); 391 392 void 393 PrPushInputFileStack ( 394 FILE *InputFile, 395 char *Filename); 396 397 BOOLEAN 398 PrPopInputFileStack ( 399 void); 400 401 #endif 402