aslanalyze.c revision 1.1.1.2.4.2
1 1.1.1.2.4.2 rmind /****************************************************************************** 2 1.1.1.2.4.2 rmind * 3 1.1.1.2.4.2 rmind * Module Name: aslanalyze.c - Support functions for parse tree walks 4 1.1.1.2.4.2 rmind * 5 1.1.1.2.4.2 rmind *****************************************************************************/ 6 1.1.1.2.4.2 rmind 7 1.1.1.2.4.2 rmind /* 8 1.1.1.2.4.2 rmind * Copyright (C) 2000 - 2011, Intel Corp. 9 1.1.1.2.4.2 rmind * All rights reserved. 10 1.1.1.2.4.2 rmind * 11 1.1.1.2.4.2 rmind * Redistribution and use in source and binary forms, with or without 12 1.1.1.2.4.2 rmind * modification, are permitted provided that the following conditions 13 1.1.1.2.4.2 rmind * are met: 14 1.1.1.2.4.2 rmind * 1. Redistributions of source code must retain the above copyright 15 1.1.1.2.4.2 rmind * notice, this list of conditions, and the following disclaimer, 16 1.1.1.2.4.2 rmind * without modification. 17 1.1.1.2.4.2 rmind * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18 1.1.1.2.4.2 rmind * substantially similar to the "NO WARRANTY" disclaimer below 19 1.1.1.2.4.2 rmind * ("Disclaimer") and any redistribution must be conditioned upon 20 1.1.1.2.4.2 rmind * including a substantially similar Disclaimer requirement for further 21 1.1.1.2.4.2 rmind * binary redistribution. 22 1.1.1.2.4.2 rmind * 3. Neither the names of the above-listed copyright holders nor the names 23 1.1.1.2.4.2 rmind * of any contributors may be used to endorse or promote products derived 24 1.1.1.2.4.2 rmind * from this software without specific prior written permission. 25 1.1.1.2.4.2 rmind * 26 1.1.1.2.4.2 rmind * Alternatively, this software may be distributed under the terms of the 27 1.1.1.2.4.2 rmind * GNU General Public License ("GPL") version 2 as published by the Free 28 1.1.1.2.4.2 rmind * Software Foundation. 29 1.1.1.2.4.2 rmind * 30 1.1.1.2.4.2 rmind * NO WARRANTY 31 1.1.1.2.4.2 rmind * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32 1.1.1.2.4.2 rmind * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33 1.1.1.2.4.2 rmind * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 34 1.1.1.2.4.2 rmind * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35 1.1.1.2.4.2 rmind * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 1.1.1.2.4.2 rmind * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 1.1.1.2.4.2 rmind * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 1.1.1.2.4.2 rmind * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39 1.1.1.2.4.2 rmind * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40 1.1.1.2.4.2 rmind * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 1.1.1.2.4.2 rmind * POSSIBILITY OF SUCH DAMAGES. 42 1.1.1.2.4.2 rmind */ 43 1.1.1.2.4.2 rmind 44 1.1.1.2.4.2 rmind 45 1.1.1.2.4.2 rmind #include "aslcompiler.h" 46 1.1.1.2.4.2 rmind #include "aslcompiler.y.h" 47 1.1.1.2.4.2 rmind #include <string.h> 48 1.1.1.2.4.2 rmind 49 1.1.1.2.4.2 rmind 50 1.1.1.2.4.2 rmind #define _COMPONENT ACPI_COMPILER 51 1.1.1.2.4.2 rmind ACPI_MODULE_NAME ("aslanalyze") 52 1.1.1.2.4.2 rmind 53 1.1.1.2.4.2 rmind 54 1.1.1.2.4.2 rmind /******************************************************************************* 55 1.1.1.2.4.2 rmind * 56 1.1.1.2.4.2 rmind * FUNCTION: AnIsInternalMethod 57 1.1.1.2.4.2 rmind * 58 1.1.1.2.4.2 rmind * PARAMETERS: Op - Current op 59 1.1.1.2.4.2 rmind * 60 1.1.1.2.4.2 rmind * RETURN: Boolean 61 1.1.1.2.4.2 rmind * 62 1.1.1.2.4.2 rmind * DESCRIPTION: Check for an internal control method. 63 1.1.1.2.4.2 rmind * 64 1.1.1.2.4.2 rmind ******************************************************************************/ 65 1.1.1.2.4.2 rmind 66 1.1.1.2.4.2 rmind BOOLEAN 67 1.1.1.2.4.2 rmind AnIsInternalMethod ( 68 1.1.1.2.4.2 rmind ACPI_PARSE_OBJECT *Op) 69 1.1.1.2.4.2 rmind { 70 1.1.1.2.4.2 rmind 71 1.1.1.2.4.2 rmind if ((!ACPI_STRCMP (Op->Asl.ExternalName, "\\_OSI")) || 72 1.1.1.2.4.2 rmind (!ACPI_STRCMP (Op->Asl.ExternalName, "_OSI"))) 73 1.1.1.2.4.2 rmind { 74 1.1.1.2.4.2 rmind return (TRUE); 75 1.1.1.2.4.2 rmind } 76 1.1.1.2.4.2 rmind 77 1.1.1.2.4.2 rmind return (FALSE); 78 1.1.1.2.4.2 rmind } 79 1.1.1.2.4.2 rmind 80 1.1.1.2.4.2 rmind 81 1.1.1.2.4.2 rmind /******************************************************************************* 82 1.1.1.2.4.2 rmind * 83 1.1.1.2.4.2 rmind * FUNCTION: AnGetInternalMethodReturnType 84 1.1.1.2.4.2 rmind * 85 1.1.1.2.4.2 rmind * PARAMETERS: Op - Current op 86 1.1.1.2.4.2 rmind * 87 1.1.1.2.4.2 rmind * RETURN: Btype 88 1.1.1.2.4.2 rmind * 89 1.1.1.2.4.2 rmind * DESCRIPTION: Get the return type of an internal method 90 1.1.1.2.4.2 rmind * 91 1.1.1.2.4.2 rmind ******************************************************************************/ 92 1.1.1.2.4.2 rmind 93 1.1.1.2.4.2 rmind UINT32 94 1.1.1.2.4.2 rmind AnGetInternalMethodReturnType ( 95 1.1.1.2.4.2 rmind ACPI_PARSE_OBJECT *Op) 96 1.1.1.2.4.2 rmind { 97 1.1.1.2.4.2 rmind 98 1.1.1.2.4.2 rmind if ((!ACPI_STRCMP (Op->Asl.ExternalName, "\\_OSI")) || 99 1.1.1.2.4.2 rmind (!ACPI_STRCMP (Op->Asl.ExternalName, "_OSI"))) 100 1.1.1.2.4.2 rmind { 101 1.1.1.2.4.2 rmind return (ACPI_BTYPE_STRING); 102 1.1.1.2.4.2 rmind } 103 1.1.1.2.4.2 rmind 104 1.1.1.2.4.2 rmind return (0); 105 1.1.1.2.4.2 rmind } 106 1.1.1.2.4.2 rmind 107 1.1.1.2.4.2 rmind 108 1.1.1.2.4.2 rmind /******************************************************************************* 109 1.1.1.2.4.2 rmind * 110 1.1.1.2.4.2 rmind * FUNCTION: AnCheckId 111 1.1.1.2.4.2 rmind * 112 1.1.1.2.4.2 rmind * PARAMETERS: Op - Current parse op 113 1.1.1.2.4.2 rmind * Type - HID or CID 114 1.1.1.2.4.2 rmind * 115 1.1.1.2.4.2 rmind * RETURN: None 116 1.1.1.2.4.2 rmind * 117 1.1.1.2.4.2 rmind * DESCRIPTION: Perform various checks on _HID and _CID strings. Only limited 118 1.1.1.2.4.2 rmind * checks can be performed on _CID strings. 119 1.1.1.2.4.2 rmind * 120 1.1.1.2.4.2 rmind ******************************************************************************/ 121 1.1.1.2.4.2 rmind 122 1.1.1.2.4.2 rmind void 123 1.1.1.2.4.2 rmind AnCheckId ( 124 1.1.1.2.4.2 rmind ACPI_PARSE_OBJECT *Op, 125 1.1.1.2.4.2 rmind ACPI_NAME Type) 126 1.1.1.2.4.2 rmind { 127 1.1.1.2.4.2 rmind UINT32 i; 128 1.1.1.2.4.2 rmind ACPI_SIZE Length; 129 1.1.1.2.4.2 rmind UINT32 AlphaPrefixLength; 130 1.1.1.2.4.2 rmind 131 1.1.1.2.4.2 rmind 132 1.1.1.2.4.2 rmind /* Only care about string versions of _HID/_CID (integers are legal) */ 133 1.1.1.2.4.2 rmind 134 1.1.1.2.4.2 rmind if (Op->Asl.ParseOpcode != PARSEOP_STRING_LITERAL) 135 1.1.1.2.4.2 rmind { 136 1.1.1.2.4.2 rmind return; 137 1.1.1.2.4.2 rmind } 138 1.1.1.2.4.2 rmind 139 1.1.1.2.4.2 rmind /* For both _HID and _CID, the string must be non-null */ 140 1.1.1.2.4.2 rmind 141 1.1.1.2.4.2 rmind Length = strlen (Op->Asl.Value.String); 142 1.1.1.2.4.2 rmind if (!Length) 143 1.1.1.2.4.2 rmind { 144 1.1.1.2.4.2 rmind AslError (ASL_ERROR, ASL_MSG_NULL_STRING, 145 1.1.1.2.4.2 rmind Op, NULL); 146 1.1.1.2.4.2 rmind return; 147 1.1.1.2.4.2 rmind } 148 1.1.1.2.4.2 rmind 149 1.1.1.2.4.2 rmind /* 150 1.1.1.2.4.2 rmind * One of the things we want to catch here is the use of a leading 151 1.1.1.2.4.2 rmind * asterisk in the string -- an odd construct that certain platform 152 1.1.1.2.4.2 rmind * manufacturers are fond of. Technically, a leading asterisk is OK 153 1.1.1.2.4.2 rmind * for _CID, but a valid use of this has not been seen. 154 1.1.1.2.4.2 rmind */ 155 1.1.1.2.4.2 rmind if (*Op->Asl.Value.String == '*') 156 1.1.1.2.4.2 rmind { 157 1.1.1.2.4.2 rmind AslError (ASL_ERROR, ASL_MSG_LEADING_ASTERISK, 158 1.1.1.2.4.2 rmind Op, Op->Asl.Value.String); 159 1.1.1.2.4.2 rmind return; 160 1.1.1.2.4.2 rmind } 161 1.1.1.2.4.2 rmind 162 1.1.1.2.4.2 rmind /* _CID strings are bus-specific, no more checks can be performed */ 163 1.1.1.2.4.2 rmind 164 1.1.1.2.4.2 rmind if (Type == ASL_TYPE_CID) 165 1.1.1.2.4.2 rmind { 166 1.1.1.2.4.2 rmind return; 167 1.1.1.2.4.2 rmind } 168 1.1.1.2.4.2 rmind 169 1.1.1.2.4.2 rmind /* For _HID, all characters must be alphanumeric */ 170 1.1.1.2.4.2 rmind 171 1.1.1.2.4.2 rmind for (i = 0; Op->Asl.Value.String[i]; i++) 172 1.1.1.2.4.2 rmind { 173 1.1.1.2.4.2 rmind if (!isalnum ((int) Op->Asl.Value.String[i])) 174 1.1.1.2.4.2 rmind { 175 1.1.1.2.4.2 rmind AslError (ASL_ERROR, ASL_MSG_ALPHANUMERIC_STRING, 176 1.1.1.2.4.2 rmind Op, Op->Asl.Value.String); 177 1.1.1.2.4.2 rmind break; 178 1.1.1.2.4.2 rmind } 179 1.1.1.2.4.2 rmind } 180 1.1.1.2.4.2 rmind 181 1.1.1.2.4.2 rmind /* _HID String must be of the form "XXX####" or "ACPI####" */ 182 1.1.1.2.4.2 rmind 183 1.1.1.2.4.2 rmind if ((Length < 7) || (Length > 8)) 184 1.1.1.2.4.2 rmind { 185 1.1.1.2.4.2 rmind AslError (ASL_ERROR, ASL_MSG_HID_LENGTH, 186 1.1.1.2.4.2 rmind Op, Op->Asl.Value.String); 187 1.1.1.2.4.2 rmind return; 188 1.1.1.2.4.2 rmind } 189 1.1.1.2.4.2 rmind 190 1.1.1.2.4.2 rmind /* _HID Length is valid, now check for uppercase (first 3 or 4 chars) */ 191 1.1.1.2.4.2 rmind 192 1.1.1.2.4.2 rmind AlphaPrefixLength = 3; 193 1.1.1.2.4.2 rmind if (Length >= 8) 194 1.1.1.2.4.2 rmind { 195 1.1.1.2.4.2 rmind AlphaPrefixLength = 4; 196 1.1.1.2.4.2 rmind } 197 1.1.1.2.4.2 rmind 198 1.1.1.2.4.2 rmind /* Ensure the alphabetic prefix is all uppercase */ 199 1.1.1.2.4.2 rmind 200 1.1.1.2.4.2 rmind for (i = 0; (i < AlphaPrefixLength) && Op->Asl.Value.String[i]; i++) 201 1.1.1.2.4.2 rmind { 202 1.1.1.2.4.2 rmind if (!isupper ((int) Op->Asl.Value.String[i])) 203 1.1.1.2.4.2 rmind { 204 1.1.1.2.4.2 rmind AslError (ASL_ERROR, ASL_MSG_UPPER_CASE, 205 1.1.1.2.4.2 rmind Op, &Op->Asl.Value.String[i]); 206 1.1.1.2.4.2 rmind break; 207 1.1.1.2.4.2 rmind } 208 1.1.1.2.4.2 rmind } 209 1.1.1.2.4.2 rmind } 210 1.1.1.2.4.2 rmind 211 1.1.1.2.4.2 rmind 212 1.1.1.2.4.2 rmind /******************************************************************************* 213 1.1.1.2.4.2 rmind * 214 1.1.1.2.4.2 rmind * FUNCTION: AnLastStatementIsReturn 215 1.1.1.2.4.2 rmind * 216 1.1.1.2.4.2 rmind * PARAMETERS: Op - A method parse node 217 1.1.1.2.4.2 rmind * 218 1.1.1.2.4.2 rmind * RETURN: TRUE if last statement is an ASL RETURN. False otherwise 219 1.1.1.2.4.2 rmind * 220 1.1.1.2.4.2 rmind * DESCRIPTION: Walk down the list of top level statements within a method 221 1.1.1.2.4.2 rmind * to find the last one. Check if that last statement is in 222 1.1.1.2.4.2 rmind * fact a RETURN statement. 223 1.1.1.2.4.2 rmind * 224 1.1.1.2.4.2 rmind ******************************************************************************/ 225 1.1.1.2.4.2 rmind 226 1.1.1.2.4.2 rmind BOOLEAN 227 1.1.1.2.4.2 rmind AnLastStatementIsReturn ( 228 1.1.1.2.4.2 rmind ACPI_PARSE_OBJECT *Op) 229 1.1.1.2.4.2 rmind { 230 1.1.1.2.4.2 rmind ACPI_PARSE_OBJECT *Next; 231 1.1.1.2.4.2 rmind 232 1.1.1.2.4.2 rmind 233 1.1.1.2.4.2 rmind /* Check if last statement is a return */ 234 1.1.1.2.4.2 rmind 235 1.1.1.2.4.2 rmind Next = ASL_GET_CHILD_NODE (Op); 236 1.1.1.2.4.2 rmind while (Next) 237 1.1.1.2.4.2 rmind { 238 1.1.1.2.4.2 rmind if ((!Next->Asl.Next) && 239 1.1.1.2.4.2 rmind (Next->Asl.ParseOpcode == PARSEOP_RETURN)) 240 1.1.1.2.4.2 rmind { 241 1.1.1.2.4.2 rmind return (TRUE); 242 1.1.1.2.4.2 rmind } 243 1.1.1.2.4.2 rmind 244 1.1.1.2.4.2 rmind Next = ASL_GET_PEER_NODE (Next); 245 1.1.1.2.4.2 rmind } 246 1.1.1.2.4.2 rmind 247 1.1.1.2.4.2 rmind return (FALSE); 248 1.1.1.2.4.2 rmind } 249 1.1.1.2.4.2 rmind 250 1.1.1.2.4.2 rmind 251 1.1.1.2.4.2 rmind /******************************************************************************* 252 1.1.1.2.4.2 rmind * 253 1.1.1.2.4.2 rmind * FUNCTION: AnCheckMethodReturnValue 254 1.1.1.2.4.2 rmind * 255 1.1.1.2.4.2 rmind * PARAMETERS: Op - Parent 256 1.1.1.2.4.2 rmind * OpInfo - Parent info 257 1.1.1.2.4.2 rmind * ArgOp - Method invocation op 258 1.1.1.2.4.2 rmind * RequiredBtypes - What caller requires 259 1.1.1.2.4.2 rmind * ThisNodeBtype - What this node returns (if anything) 260 1.1.1.2.4.2 rmind * 261 1.1.1.2.4.2 rmind * RETURN: None 262 1.1.1.2.4.2 rmind * 263 1.1.1.2.4.2 rmind * DESCRIPTION: Check a method invocation for 1) A return value and if it does 264 1.1.1.2.4.2 rmind * in fact return a value, 2) check the type of the return value. 265 1.1.1.2.4.2 rmind * 266 1.1.1.2.4.2 rmind ******************************************************************************/ 267 1.1.1.2.4.2 rmind 268 1.1.1.2.4.2 rmind void 269 1.1.1.2.4.2 rmind AnCheckMethodReturnValue ( 270 1.1.1.2.4.2 rmind ACPI_PARSE_OBJECT *Op, 271 1.1.1.2.4.2 rmind const ACPI_OPCODE_INFO *OpInfo, 272 1.1.1.2.4.2 rmind ACPI_PARSE_OBJECT *ArgOp, 273 1.1.1.2.4.2 rmind UINT32 RequiredBtypes, 274 1.1.1.2.4.2 rmind UINT32 ThisNodeBtype) 275 1.1.1.2.4.2 rmind { 276 1.1.1.2.4.2 rmind ACPI_PARSE_OBJECT *OwningOp; 277 1.1.1.2.4.2 rmind ACPI_NAMESPACE_NODE *Node; 278 1.1.1.2.4.2 rmind 279 1.1.1.2.4.2 rmind 280 1.1.1.2.4.2 rmind Node = ArgOp->Asl.Node; 281 1.1.1.2.4.2 rmind 282 1.1.1.2.4.2 rmind 283 1.1.1.2.4.2 rmind /* Examine the parent op of this method */ 284 1.1.1.2.4.2 rmind 285 1.1.1.2.4.2 rmind OwningOp = Node->Op; 286 1.1.1.2.4.2 rmind if (OwningOp->Asl.CompileFlags & NODE_METHOD_NO_RETVAL) 287 1.1.1.2.4.2 rmind { 288 1.1.1.2.4.2 rmind /* Method NEVER returns a value */ 289 1.1.1.2.4.2 rmind 290 1.1.1.2.4.2 rmind AslError (ASL_ERROR, ASL_MSG_NO_RETVAL, Op, Op->Asl.ExternalName); 291 1.1.1.2.4.2 rmind } 292 1.1.1.2.4.2 rmind else if (OwningOp->Asl.CompileFlags & NODE_METHOD_SOME_NO_RETVAL) 293 1.1.1.2.4.2 rmind { 294 1.1.1.2.4.2 rmind /* Method SOMETIMES returns a value, SOMETIMES not */ 295 1.1.1.2.4.2 rmind 296 1.1.1.2.4.2 rmind AslError (ASL_WARNING, ASL_MSG_SOME_NO_RETVAL, Op, Op->Asl.ExternalName); 297 1.1.1.2.4.2 rmind } 298 1.1.1.2.4.2 rmind else if (!(ThisNodeBtype & RequiredBtypes)) 299 1.1.1.2.4.2 rmind { 300 1.1.1.2.4.2 rmind /* Method returns a value, but the type is wrong */ 301 1.1.1.2.4.2 rmind 302 1.1.1.2.4.2 rmind AnFormatBtype (StringBuffer, ThisNodeBtype); 303 1.1.1.2.4.2 rmind AnFormatBtype (StringBuffer2, RequiredBtypes); 304 1.1.1.2.4.2 rmind 305 1.1.1.2.4.2 rmind /* 306 1.1.1.2.4.2 rmind * The case where the method does not return any value at all 307 1.1.1.2.4.2 rmind * was already handled in the namespace cross reference 308 1.1.1.2.4.2 rmind * -- Only issue an error if the method in fact returns a value, 309 1.1.1.2.4.2 rmind * but it is of the wrong type 310 1.1.1.2.4.2 rmind */ 311 1.1.1.2.4.2 rmind if (ThisNodeBtype != 0) 312 1.1.1.2.4.2 rmind { 313 1.1.1.2.4.2 rmind sprintf (MsgBuffer, 314 1.1.1.2.4.2 rmind "Method returns [%s], %s operator requires [%s]", 315 1.1.1.2.4.2 rmind StringBuffer, OpInfo->Name, StringBuffer2); 316 1.1.1.2.4.2 rmind 317 1.1.1.2.4.2 rmind AslError (ASL_ERROR, ASL_MSG_INVALID_TYPE, ArgOp, MsgBuffer); 318 1.1.1.2.4.2 rmind } 319 1.1.1.2.4.2 rmind } 320 1.1.1.2.4.2 rmind } 321 1.1.1.2.4.2 rmind 322 1.1.1.2.4.2 rmind 323 1.1.1.2.4.2 rmind /******************************************************************************* 324 1.1.1.2.4.2 rmind * 325 1.1.1.2.4.2 rmind * FUNCTION: AnIsResultUsed 326 1.1.1.2.4.2 rmind * 327 1.1.1.2.4.2 rmind * PARAMETERS: Op - Parent op for the operator 328 1.1.1.2.4.2 rmind * 329 1.1.1.2.4.2 rmind * RETURN: TRUE if result from this operation is actually consumed 330 1.1.1.2.4.2 rmind * 331 1.1.1.2.4.2 rmind * DESCRIPTION: Determine if the function result value from an operator is 332 1.1.1.2.4.2 rmind * used. 333 1.1.1.2.4.2 rmind * 334 1.1.1.2.4.2 rmind ******************************************************************************/ 335 1.1.1.2.4.2 rmind 336 1.1.1.2.4.2 rmind BOOLEAN 337 1.1.1.2.4.2 rmind AnIsResultUsed ( 338 1.1.1.2.4.2 rmind ACPI_PARSE_OBJECT *Op) 339 1.1.1.2.4.2 rmind { 340 1.1.1.2.4.2 rmind ACPI_PARSE_OBJECT *Parent; 341 1.1.1.2.4.2 rmind 342 1.1.1.2.4.2 rmind 343 1.1.1.2.4.2 rmind switch (Op->Asl.ParseOpcode) 344 1.1.1.2.4.2 rmind { 345 1.1.1.2.4.2 rmind case PARSEOP_INCREMENT: 346 1.1.1.2.4.2 rmind case PARSEOP_DECREMENT: 347 1.1.1.2.4.2 rmind 348 1.1.1.2.4.2 rmind /* These are standalone operators, no return value */ 349 1.1.1.2.4.2 rmind 350 1.1.1.2.4.2 rmind return (TRUE); 351 1.1.1.2.4.2 rmind 352 1.1.1.2.4.2 rmind default: 353 1.1.1.2.4.2 rmind break; 354 1.1.1.2.4.2 rmind } 355 1.1.1.2.4.2 rmind 356 1.1.1.2.4.2 rmind /* Examine parent to determine if the return value is used */ 357 1.1.1.2.4.2 rmind 358 1.1.1.2.4.2 rmind Parent = Op->Asl.Parent; 359 1.1.1.2.4.2 rmind switch (Parent->Asl.ParseOpcode) 360 1.1.1.2.4.2 rmind { 361 1.1.1.2.4.2 rmind /* If/While - check if the operator is the predicate */ 362 1.1.1.2.4.2 rmind 363 1.1.1.2.4.2 rmind case PARSEOP_IF: 364 1.1.1.2.4.2 rmind case PARSEOP_WHILE: 365 1.1.1.2.4.2 rmind 366 1.1.1.2.4.2 rmind /* First child is the predicate */ 367 1.1.1.2.4.2 rmind 368 1.1.1.2.4.2 rmind if (Parent->Asl.Child == Op) 369 1.1.1.2.4.2 rmind { 370 1.1.1.2.4.2 rmind return (TRUE); 371 1.1.1.2.4.2 rmind } 372 1.1.1.2.4.2 rmind return (FALSE); 373 1.1.1.2.4.2 rmind 374 1.1.1.2.4.2 rmind /* Not used if one of these is the parent */ 375 1.1.1.2.4.2 rmind 376 1.1.1.2.4.2 rmind case PARSEOP_METHOD: 377 1.1.1.2.4.2 rmind case PARSEOP_DEFINITIONBLOCK: 378 1.1.1.2.4.2 rmind case PARSEOP_ELSE: 379 1.1.1.2.4.2 rmind 380 1.1.1.2.4.2 rmind return (FALSE); 381 1.1.1.2.4.2 rmind 382 1.1.1.2.4.2 rmind default: 383 1.1.1.2.4.2 rmind /* Any other type of parent means that the result is used */ 384 1.1.1.2.4.2 rmind 385 1.1.1.2.4.2 rmind return (TRUE); 386 1.1.1.2.4.2 rmind } 387 1.1.1.2.4.2 rmind } 388 1.1.1.2.4.2 rmind 389 1.1.1.2.4.2 rmind 390 1.1.1.2.4.2 rmind /******************************************************************************* 391 1.1.1.2.4.2 rmind * 392 1.1.1.2.4.2 rmind * FUNCTION: ApCheckForGpeNameConflict 393 1.1.1.2.4.2 rmind * 394 1.1.1.2.4.2 rmind * PARAMETERS: Op - Current parse op 395 1.1.1.2.4.2 rmind * 396 1.1.1.2.4.2 rmind * RETURN: None 397 1.1.1.2.4.2 rmind * 398 1.1.1.2.4.2 rmind * DESCRIPTION: Check for a conflict between GPE names within this scope. 399 1.1.1.2.4.2 rmind * Conflict means two GPE names with the same GPE number, but 400 1.1.1.2.4.2 rmind * different types -- such as _L1C and _E1C. 401 1.1.1.2.4.2 rmind * 402 1.1.1.2.4.2 rmind ******************************************************************************/ 403 1.1.1.2.4.2 rmind 404 1.1.1.2.4.2 rmind void 405 1.1.1.2.4.2 rmind ApCheckForGpeNameConflict ( 406 1.1.1.2.4.2 rmind ACPI_PARSE_OBJECT *Op) 407 1.1.1.2.4.2 rmind { 408 1.1.1.2.4.2 rmind ACPI_PARSE_OBJECT *NextOp; 409 1.1.1.2.4.2 rmind UINT32 GpeNumber; 410 1.1.1.2.4.2 rmind char Name[ACPI_NAME_SIZE + 1]; 411 1.1.1.2.4.2 rmind char Target[ACPI_NAME_SIZE]; 412 1.1.1.2.4.2 rmind 413 1.1.1.2.4.2 rmind 414 1.1.1.2.4.2 rmind /* Need a null-terminated string version of NameSeg */ 415 1.1.1.2.4.2 rmind 416 1.1.1.2.4.2 rmind ACPI_MOVE_32_TO_32 (Name, &Op->Asl.NameSeg); 417 1.1.1.2.4.2 rmind Name[ACPI_NAME_SIZE] = 0; 418 1.1.1.2.4.2 rmind 419 1.1.1.2.4.2 rmind /* 420 1.1.1.2.4.2 rmind * For a GPE method: 421 1.1.1.2.4.2 rmind * 1st char must be underscore 422 1.1.1.2.4.2 rmind * 2nd char must be L or E 423 1.1.1.2.4.2 rmind * 3rd/4th chars must be a hex number 424 1.1.1.2.4.2 rmind */ 425 1.1.1.2.4.2 rmind if ((Name[0] != '_') || 426 1.1.1.2.4.2 rmind ((Name[1] != 'L') && (Name[1] != 'E'))) 427 1.1.1.2.4.2 rmind { 428 1.1.1.2.4.2 rmind return; 429 1.1.1.2.4.2 rmind } 430 1.1.1.2.4.2 rmind 431 1.1.1.2.4.2 rmind /* Verify 3rd/4th chars are a valid hex value */ 432 1.1.1.2.4.2 rmind 433 1.1.1.2.4.2 rmind GpeNumber = ACPI_STRTOUL (&Name[2], NULL, 16); 434 1.1.1.2.4.2 rmind if (GpeNumber == ACPI_UINT32_MAX) 435 1.1.1.2.4.2 rmind { 436 1.1.1.2.4.2 rmind return; 437 1.1.1.2.4.2 rmind } 438 1.1.1.2.4.2 rmind 439 1.1.1.2.4.2 rmind /* 440 1.1.1.2.4.2 rmind * We are now sure we have an _Lxx or _Exx. 441 1.1.1.2.4.2 rmind * Create the target name that would cause collision (Flip E/L) 442 1.1.1.2.4.2 rmind */ 443 1.1.1.2.4.2 rmind ACPI_MOVE_32_TO_32 (Target, Name); 444 1.1.1.2.4.2 rmind 445 1.1.1.2.4.2 rmind /* Inject opposite letter ("L" versus "E") */ 446 1.1.1.2.4.2 rmind 447 1.1.1.2.4.2 rmind if (Name[1] == 'L') 448 1.1.1.2.4.2 rmind { 449 1.1.1.2.4.2 rmind Target[1] = 'E'; 450 1.1.1.2.4.2 rmind } 451 1.1.1.2.4.2 rmind else /* Name[1] == 'E' */ 452 1.1.1.2.4.2 rmind { 453 1.1.1.2.4.2 rmind Target[1] = 'L'; 454 1.1.1.2.4.2 rmind } 455 1.1.1.2.4.2 rmind 456 1.1.1.2.4.2 rmind /* Search all peers (objects within this scope) for target match */ 457 1.1.1.2.4.2 rmind 458 1.1.1.2.4.2 rmind NextOp = Op->Asl.Next; 459 1.1.1.2.4.2 rmind while (NextOp) 460 1.1.1.2.4.2 rmind { 461 1.1.1.2.4.2 rmind /* 462 1.1.1.2.4.2 rmind * We mostly care about methods, but check Name() constructs also, 463 1.1.1.2.4.2 rmind * even though they will get another error for not being a method. 464 1.1.1.2.4.2 rmind * All GPE names must be defined as control methods. 465 1.1.1.2.4.2 rmind */ 466 1.1.1.2.4.2 rmind if ((NextOp->Asl.ParseOpcode == PARSEOP_METHOD) || 467 1.1.1.2.4.2 rmind (NextOp->Asl.ParseOpcode == PARSEOP_NAME)) 468 1.1.1.2.4.2 rmind { 469 1.1.1.2.4.2 rmind if (ACPI_COMPARE_NAME (Target, NextOp->Asl.NameSeg)) 470 1.1.1.2.4.2 rmind { 471 1.1.1.2.4.2 rmind /* Found both _Exy and _Lxy in the same scope, error */ 472 1.1.1.2.4.2 rmind 473 1.1.1.2.4.2 rmind AslError (ASL_ERROR, ASL_MSG_GPE_NAME_CONFLICT, NextOp, 474 1.1.1.2.4.2 rmind Name); 475 1.1.1.2.4.2 rmind return; 476 1.1.1.2.4.2 rmind } 477 1.1.1.2.4.2 rmind } 478 1.1.1.2.4.2 rmind 479 1.1.1.2.4.2 rmind NextOp = NextOp->Asl.Next; 480 1.1.1.2.4.2 rmind } 481 1.1.1.2.4.2 rmind 482 1.1.1.2.4.2 rmind /* OK, no conflict found */ 483 1.1.1.2.4.2 rmind 484 1.1.1.2.4.2 rmind return; 485 1.1.1.2.4.2 rmind } 486
Indexes created Sat Oct 11 19:10:01 GMT 2025