1 /****************************************************************************** 2 * 3 * Module Name: aslprune - Parse tree prune utility 4 * 5 *****************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2023, 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 #include <contrib/dev/acpica/compiler/aslcompiler.h> 153 #include "aslcompiler.y.h" 154 #include <contrib/dev/acpica/include/acapps.h> 155 156 #define _COMPONENT ACPI_COMPILER 157 ACPI_MODULE_NAME ("aslprune") 158 159 160 /* Local prototypes */ 161 162 static ACPI_STATUS 163 PrTreePruneWalk ( 164 ACPI_PARSE_OBJECT *Op, 165 UINT32 Level, 166 void *Context); 167 168 static void 169 PrPrintObjectAtLevel ( 170 UINT32 Level, 171 const char *ObjectName); 172 173 174 /* Structure used for the pruning parse tree walk */ 175 176 typedef struct acpi_prune_info 177 { 178 UINT32 PruneLevel; 179 UINT16 ParseOpcode; 180 UINT16 Count; 181 182 } ACPI_PRUNE_INFO; 183 184 185 /******************************************************************************* 186 * 187 * FUNCTION: AslPruneParseTree 188 * 189 * PARAMETERS: PruneDepth - Number of levels to prune 190 * Type - Prune type (Device, Method, etc.) 191 * 192 * RETURN: None 193 * 194 * DESCRIPTION: Prune off one or more levels of the ASL parse tree 195 * 196 ******************************************************************************/ 197 198 void 199 AslPruneParseTree ( 200 UINT32 PruneDepth, 201 UINT32 Type) 202 { 203 ACPI_PRUNE_INFO PruneObj; 204 205 206 PruneObj.PruneLevel = PruneDepth; 207 PruneObj.Count = 0; 208 209 switch (Type) 210 { 211 case 0: 212 PruneObj.ParseOpcode = (UINT16) PARSEOP_DEVICE; 213 break; 214 215 case 1: 216 PruneObj.ParseOpcode = (UINT16) PARSEOP_METHOD; 217 break; 218 219 case 2: 220 PruneObj.ParseOpcode = (UINT16) PARSEOP_IF; 221 break; 222 223 default: 224 AcpiOsPrintf ("Unsupported type: %u\n", Type); 225 return; 226 } 227 228 AcpiOsPrintf ("Pruning parse tree, from depth %u\n", 229 PruneDepth); 230 231 AcpiOsPrintf ("\nRemoving Objects:\n"); 232 233 TrWalkParseTree (AslGbl_ParseTreeRoot, ASL_WALK_VISIT_DOWNWARD, 234 PrTreePruneWalk, NULL, ACPI_CAST_PTR (void, &PruneObj)); 235 236 AcpiOsPrintf ("\n%u Total Objects Removed\n", PruneObj.Count); 237 } 238 239 240 /******************************************************************************* 241 * 242 * FUNCTION: PrPrintObjectAtLevel 243 * 244 * PARAMETERS: Level - Current nesting level 245 * ObjectName - ACPI name for the object 246 * 247 * RETURN: None 248 * 249 * DESCRIPTION: Print object name with indent 250 * 251 ******************************************************************************/ 252 253 static void 254 PrPrintObjectAtLevel ( 255 UINT32 Level, 256 const char *ObjectName) 257 { 258 UINT32 i; 259 260 261 for (i = 0; i < Level; i++) 262 { 263 AcpiOsPrintf (" "); 264 } 265 266 AcpiOsPrintf ("[%s] at Level [%u]\n", ObjectName, Level); 267 } 268 269 270 /******************************************************************************* 271 * 272 * FUNCTION: PrTreePruneWalk 273 * 274 * PARAMETERS: Parse tree walk callback 275 * 276 * RETURN: Status 277 * 278 * DESCRIPTION: Prune off one or more levels of the ASL parse tree 279 * 280 * Current objects that can be pruned are: Devices, Methods, and If/Else 281 * blocks. 282 * 283 ******************************************************************************/ 284 285 static ACPI_STATUS 286 PrTreePruneWalk ( 287 ACPI_PARSE_OBJECT *Op, 288 UINT32 Level, 289 void *Context) 290 { 291 ACPI_PRUNE_INFO *PruneObj = (ACPI_PRUNE_INFO *) Context; 292 293 294 /* We only care about objects below the Prune Level threshold */ 295 296 if (Level <= PruneObj->PruneLevel) 297 { 298 return (AE_OK); 299 } 300 301 if ((Op->Asl.ParseOpcode != PruneObj->ParseOpcode) && 302 !(Op->Asl.ParseOpcode == PARSEOP_ELSE && 303 PruneObj->ParseOpcode == PARSEOP_IF)) 304 { 305 return (AE_OK); 306 } 307 308 switch (Op->Asl.ParseOpcode) 309 { 310 case PARSEOP_METHOD: 311 312 AcpiOsPrintf ("Method"); 313 PrPrintObjectAtLevel (Level, Op->Asl.Child->Asl.Value.Name); 314 Op->Asl.Child->Asl.Next->Asl.Next->Asl.Next->Asl.Next->Asl.Next->Asl.Next = NULL; 315 PruneObj->Count++; 316 break; 317 318 case PARSEOP_DEVICE: 319 320 AcpiOsPrintf ("Device"); 321 PrPrintObjectAtLevel (Level, Op->Asl.Child->Asl.Value.Name); 322 Op->Asl.Child->Asl.Next = NULL; 323 PruneObj->Count++; 324 break; 325 326 case PARSEOP_IF: 327 case PARSEOP_ELSE: 328 329 if (Op->Asl.ParseOpcode == PARSEOP_ELSE) 330 { 331 PrPrintObjectAtLevel(Level, "Else"); 332 Op->Asl.Child = NULL; 333 } 334 else 335 { 336 PrPrintObjectAtLevel(Level, "If"); 337 Op->Asl.Child->Asl.Next = NULL; 338 } 339 340 PruneObj->Count++; 341 break; 342 343 default: 344 345 break; 346 } 347 348 return (AE_OK); 349 } 350