Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/contrib/dev/acpica/compiler/aslcstyle.y
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1 NoEcho(' 2 /****************************************************************************** 3 * 4 * Module Name: aslcstyle.y - Production rules for symbolic operators 5 * 6 *****************************************************************************/ 7 8 /****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999 - 2022, 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 ') 154 155 /******************************************************************************* 156 * 157 * Production rules for the symbolic (c-style) operators 158 * 159 ******************************************************************************/ 160 161 /* 162 * ASL Extensions: C-style math/logical operators and expressions. 163 * The implementation transforms these operators into the standard 164 * AML opcodes and syntax. 165 * 166 * Supported operators and precedence rules (high-to-low) 167 * 168 * NOTE: The operator precedence and associativity rules are 169 * implemented by the tokens in asltokens.y 170 * 171 * (left-to-right): 172 * 1) ( ) expr++ expr-- 173 * 174 * (right-to-left): 175 * 2) ! ~ 176 * 177 * (left-to-right): 178 * 3) * / % 179 * 4) + - 180 * 5) >> << 181 * 6) < > <= >= 182 * 7) == != 183 * 8) & 184 * 9) ^ 185 * 10) | 186 * 11) && 187 * 12) || 188 * 189 * (right-to-left): 190 * 13) = += -= *= /= %= <<= >>= &= ^= |= 191 */ 192 193 194 /******************************************************************************* 195 * 196 * Basic operations for math and logical expressions. 197 * 198 ******************************************************************************/ 199 200 Expression 201 202 /* Unary operators */ 203 204 : PARSEOP_EXP_LOGICAL_NOT {$<n>$ = TrCreateLeafOp (PARSEOP_LNOT);} 205 TermArg {$$ = TrLinkOpChildren ($<n>2,1,$3);} 206 | PARSEOP_EXP_NOT {$<n>$ = TrCreateLeafOp (PARSEOP_NOT);} 207 TermArg {$$ = TrLinkOpChildren ($<n>2,2,$3,TrCreateNullTargetOp ());} 208 209 | SuperName PARSEOP_EXP_INCREMENT {$<n>$ = TrCreateLeafOp (PARSEOP_INCREMENT);} 210 {$$ = TrLinkOpChildren ($<n>3,1,$1);} 211 | SuperName PARSEOP_EXP_DECREMENT {$<n>$ = TrCreateLeafOp (PARSEOP_DECREMENT);} 212 {$$ = TrLinkOpChildren ($<n>3,1,$1);} 213 214 /* Binary operators: math and logical */ 215 216 | TermArg PARSEOP_EXP_ADD {$<n>$ = TrCreateLeafOp (PARSEOP_ADD);} 217 TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,TrCreateNullTargetOp ());} 218 | TermArg PARSEOP_EXP_DIVIDE {$<n>$ = TrCreateLeafOp (PARSEOP_DIVIDE);} 219 TermArg {$$ = TrLinkOpChildren ($<n>3,4,$1,$4,TrCreateNullTargetOp (), 220 TrCreateNullTargetOp ());} 221 | TermArg PARSEOP_EXP_MODULO {$<n>$ = TrCreateLeafOp (PARSEOP_MOD);} 222 TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,TrCreateNullTargetOp ());} 223 | TermArg PARSEOP_EXP_MULTIPLY {$<n>$ = TrCreateLeafOp (PARSEOP_MULTIPLY);} 224 TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,TrCreateNullTargetOp ());} 225 | TermArg PARSEOP_EXP_SHIFT_LEFT {$<n>$ = TrCreateLeafOp (PARSEOP_SHIFTLEFT);} 226 TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,TrCreateNullTargetOp ());} 227 | TermArg PARSEOP_EXP_SHIFT_RIGHT {$<n>$ = TrCreateLeafOp (PARSEOP_SHIFTRIGHT);} 228 TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,TrCreateNullTargetOp ());} 229 | TermArg PARSEOP_EXP_SUBTRACT {$<n>$ = TrCreateLeafOp (PARSEOP_SUBTRACT);} 230 TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,TrCreateNullTargetOp ());} 231 232 | TermArg PARSEOP_EXP_AND {$<n>$ = TrCreateLeafOp (PARSEOP_AND);} 233 TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,TrCreateNullTargetOp ());} 234 | TermArg PARSEOP_EXP_OR {$<n>$ = TrCreateLeafOp (PARSEOP_OR);} 235 TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,TrCreateNullTargetOp ());} 236 | TermArg PARSEOP_EXP_XOR {$<n>$ = TrCreateLeafOp (PARSEOP_XOR);} 237 TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4,TrCreateNullTargetOp ());} 238 239 | TermArg PARSEOP_EXP_GREATER {$<n>$ = TrCreateLeafOp (PARSEOP_LGREATER);} 240 TermArg {$$ = TrLinkOpChildren ($<n>3,2,$1,$4);} 241 | TermArg PARSEOP_EXP_GREATER_EQUAL {$<n>$ = TrCreateLeafOp (PARSEOP_LGREATEREQUAL);} 242 TermArg {$$ = TrLinkOpChildren ($<n>3,2,$1,$4);} 243 | TermArg PARSEOP_EXP_LESS {$<n>$ = TrCreateLeafOp (PARSEOP_LLESS);} 244 TermArg {$$ = TrLinkOpChildren ($<n>3,2,$1,$4);} 245 | TermArg PARSEOP_EXP_LESS_EQUAL {$<n>$ = TrCreateLeafOp (PARSEOP_LLESSEQUAL);} 246 TermArg {$$ = TrLinkOpChildren ($<n>3,2,$1,$4);} 247 248 | TermArg PARSEOP_EXP_EQUAL {$<n>$ = TrCreateLeafOp (PARSEOP_LEQUAL);} 249 TermArg {$$ = TrLinkOpChildren ($<n>3,2,$1,$4);} 250 | TermArg PARSEOP_EXP_NOT_EQUAL {$<n>$ = TrCreateLeafOp (PARSEOP_LNOTEQUAL);} 251 TermArg {$$ = TrLinkOpChildren ($<n>3,2,$1,$4);} 252 253 | TermArg PARSEOP_EXP_LOGICAL_AND {$<n>$ = TrCreateLeafOp (PARSEOP_LAND);} 254 TermArg {$$ = TrLinkOpChildren ($<n>3,2,$1,$4);} 255 | TermArg PARSEOP_EXP_LOGICAL_OR {$<n>$ = TrCreateLeafOp (PARSEOP_LOR);} 256 TermArg {$$ = TrLinkOpChildren ($<n>3,2,$1,$4);} 257 258 /* Parentheses */ 259 260 | PARSEOP_OPEN_PAREN 261 Expression 262 PARSEOP_CLOSE_PAREN {$$ = $2;} 263 264 /* Index term -- "= BUF1[5]" on right-hand side of an equals (source) */ 265 266 | IndexExpTerm 267 ; 268 269 /* 270 * Index term -- "BUF1[5] = " or " = BUF1[5] on either the left side 271 * of an equals (target) or the right side (source) 272 * Currently used in these terms: 273 * Expression 274 * ObjectTypeSource 275 * DerefOfSource 276 * Type6Opcode 277 */ 278 IndexExpTerm 279 280 : SuperName 281 PARSEOP_EXP_INDEX_LEFT 282 TermArg 283 PARSEOP_EXP_INDEX_RIGHT {$$ = TrCreateLeafOp (PARSEOP_INDEX); 284 TrLinkOpChildren ($$,3,$1,$3,TrCreateNullTargetOp ());} 285 ; 286 287 288 /******************************************************************************* 289 * 290 * All assignment-type operations -- math and logical. Includes simple 291 * assignment and compound assignments. 292 * 293 ******************************************************************************/ 294 295 EqualsTerm 296 297 /* Allow parens anywhere */ 298 299 : PARSEOP_OPEN_PAREN 300 EqualsTerm 301 PARSEOP_CLOSE_PAREN {$$ = $2;} 302 303 /* Simple Store() operation */ 304 305 | SuperName 306 PARSEOP_EXP_EQUALS 307 TermArg {$$ = TrCreateAssignmentOp ($1, $3);} 308 309 /* Chained equals: (a=RefOf)=b, a=b=c=d etc. */ 310 311 | PARSEOP_OPEN_PAREN 312 EqualsTerm 313 PARSEOP_CLOSE_PAREN 314 PARSEOP_EXP_EQUALS 315 TermArg {$$ = TrCreateAssignmentOp ($2, $5);} 316 317 /* Compound assignments -- Add (operand, operand, target) */ 318 319 | TermArg PARSEOP_EXP_ADD_EQ {$<n>$ = TrCreateLeafOp (PARSEOP_ADD);} 320 TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4, 321 TrSetOpFlags (TrCreateTargetOp ($1, NULL), OP_IS_TARGET));} 322 323 | TermArg PARSEOP_EXP_DIV_EQ {$<n>$ = TrCreateLeafOp (PARSEOP_DIVIDE);} 324 TermArg {$$ = TrLinkOpChildren ($<n>3,4,$1,$4,TrCreateNullTargetOp (), 325 TrSetOpFlags (TrCreateTargetOp ($1, NULL), OP_IS_TARGET));} 326 327 | TermArg PARSEOP_EXP_MOD_EQ {$<n>$ = TrCreateLeafOp (PARSEOP_MOD);} 328 TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4, 329 TrSetOpFlags (TrCreateTargetOp ($1, NULL), OP_IS_TARGET));} 330 331 | TermArg PARSEOP_EXP_MUL_EQ {$<n>$ = TrCreateLeafOp (PARSEOP_MULTIPLY);} 332 TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4, 333 TrSetOpFlags (TrCreateTargetOp ($1, NULL), OP_IS_TARGET));} 334 335 | TermArg PARSEOP_EXP_SHL_EQ {$<n>$ = TrCreateLeafOp (PARSEOP_SHIFTLEFT);} 336 TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4, 337 TrSetOpFlags (TrCreateTargetOp ($1, NULL), OP_IS_TARGET));} 338 339 | TermArg PARSEOP_EXP_SHR_EQ {$<n>$ = TrCreateLeafOp (PARSEOP_SHIFTRIGHT);} 340 TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4, 341 TrSetOpFlags (TrCreateTargetOp ($1, NULL), OP_IS_TARGET));} 342 343 | TermArg PARSEOP_EXP_SUB_EQ {$<n>$ = TrCreateLeafOp (PARSEOP_SUBTRACT);} 344 TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4, 345 TrSetOpFlags (TrCreateTargetOp ($1, NULL), OP_IS_TARGET));} 346 347 | TermArg PARSEOP_EXP_AND_EQ {$<n>$ = TrCreateLeafOp (PARSEOP_AND);} 348 TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4, 349 TrSetOpFlags (TrCreateTargetOp ($1, NULL), OP_IS_TARGET));} 350 351 | TermArg PARSEOP_EXP_OR_EQ {$<n>$ = TrCreateLeafOp (PARSEOP_OR);} 352 TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4, 353 TrSetOpFlags (TrCreateTargetOp ($1, NULL), OP_IS_TARGET));} 354 355 | TermArg PARSEOP_EXP_XOR_EQ {$<n>$ = TrCreateLeafOp (PARSEOP_XOR);} 356 TermArg {$$ = TrLinkOpChildren ($<n>3,3,$1,$4, 357 TrSetOpFlags (TrCreateTargetOp ($1, NULL), OP_IS_TARGET));} 358 ;
Cache object: 1c0395e6f0cc88b2d01a6784f29f8e57
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