exnames.c revision 1.1.1.2.8.2
1 1.1.1.2.8.2 jruoho 2 1.1.1.2.8.2 jruoho /****************************************************************************** 3 1.1.1.2.8.2 jruoho * 4 1.1.1.2.8.2 jruoho * Module Name: exnames - interpreter/scanner name load/execute 5 1.1.1.2.8.2 jruoho * 6 1.1.1.2.8.2 jruoho *****************************************************************************/ 7 1.1.1.2.8.2 jruoho 8 1.1.1.2.8.2 jruoho /* 9 1.1.1.2.8.2 jruoho * Copyright (C) 2000 - 2011, Intel Corp. 10 1.1.1.2.8.2 jruoho * All rights reserved. 11 1.1.1.2.8.2 jruoho * 12 1.1.1.2.8.2 jruoho * Redistribution and use in source and binary forms, with or without 13 1.1.1.2.8.2 jruoho * modification, are permitted provided that the following conditions 14 1.1.1.2.8.2 jruoho * are met: 15 1.1.1.2.8.2 jruoho * 1. Redistributions of source code must retain the above copyright 16 1.1.1.2.8.2 jruoho * notice, this list of conditions, and the following disclaimer, 17 1.1.1.2.8.2 jruoho * without modification. 18 1.1.1.2.8.2 jruoho * 2. Redistributions in binary form must reproduce at minimum a disclaimer 19 1.1.1.2.8.2 jruoho * substantially similar to the "NO WARRANTY" disclaimer below 20 1.1.1.2.8.2 jruoho * ("Disclaimer") and any redistribution must be conditioned upon 21 1.1.1.2.8.2 jruoho * including a substantially similar Disclaimer requirement for further 22 1.1.1.2.8.2 jruoho * binary redistribution. 23 1.1.1.2.8.2 jruoho * 3. Neither the names of the above-listed copyright holders nor the names 24 1.1.1.2.8.2 jruoho * of any contributors may be used to endorse or promote products derived 25 1.1.1.2.8.2 jruoho * from this software without specific prior written permission. 26 1.1.1.2.8.2 jruoho * 27 1.1.1.2.8.2 jruoho * Alternatively, this software may be distributed under the terms of the 28 1.1.1.2.8.2 jruoho * GNU General Public License ("GPL") version 2 as published by the Free 29 1.1.1.2.8.2 jruoho * Software Foundation. 30 1.1.1.2.8.2 jruoho * 31 1.1.1.2.8.2 jruoho * NO WARRANTY 32 1.1.1.2.8.2 jruoho * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 33 1.1.1.2.8.2 jruoho * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 34 1.1.1.2.8.2 jruoho * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 35 1.1.1.2.8.2 jruoho * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 36 1.1.1.2.8.2 jruoho * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 1.1.1.2.8.2 jruoho * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 1.1.1.2.8.2 jruoho * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 1.1.1.2.8.2 jruoho * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 40 1.1.1.2.8.2 jruoho * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 41 1.1.1.2.8.2 jruoho * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 42 1.1.1.2.8.2 jruoho * POSSIBILITY OF SUCH DAMAGES. 43 1.1.1.2.8.2 jruoho */ 44 1.1.1.2.8.2 jruoho 45 1.1.1.2.8.2 jruoho #define __EXNAMES_C__ 46 1.1.1.2.8.2 jruoho 47 1.1.1.2.8.2 jruoho #include "acpi.h" 48 1.1.1.2.8.2 jruoho #include "accommon.h" 49 1.1.1.2.8.2 jruoho #include "acinterp.h" 50 1.1.1.2.8.2 jruoho #include "amlcode.h" 51 1.1.1.2.8.2 jruoho 52 1.1.1.2.8.2 jruoho #define _COMPONENT ACPI_EXECUTER 53 1.1.1.2.8.2 jruoho ACPI_MODULE_NAME ("exnames") 54 1.1.1.2.8.2 jruoho 55 1.1.1.2.8.2 jruoho /* Local prototypes */ 56 1.1.1.2.8.2 jruoho 57 1.1.1.2.8.2 jruoho static char * 58 1.1.1.2.8.2 jruoho AcpiExAllocateNameString ( 59 1.1.1.2.8.2 jruoho UINT32 PrefixCount, 60 1.1.1.2.8.2 jruoho UINT32 NumNameSegs); 61 1.1.1.2.8.2 jruoho 62 1.1.1.2.8.2 jruoho static ACPI_STATUS 63 1.1.1.2.8.2 jruoho AcpiExNameSegment ( 64 1.1.1.2.8.2 jruoho UINT8 **InAmlAddress, 65 1.1.1.2.8.2 jruoho char *NameString); 66 1.1.1.2.8.2 jruoho 67 1.1.1.2.8.2 jruoho 68 1.1.1.2.8.2 jruoho /******************************************************************************* 69 1.1.1.2.8.2 jruoho * 70 1.1.1.2.8.2 jruoho * FUNCTION: AcpiExAllocateNameString 71 1.1.1.2.8.2 jruoho * 72 1.1.1.2.8.2 jruoho * PARAMETERS: PrefixCount - Count of parent levels. Special cases: 73 1.1.1.2.8.2 jruoho * (-1)==root, 0==none 74 1.1.1.2.8.2 jruoho * NumNameSegs - count of 4-character name segments 75 1.1.1.2.8.2 jruoho * 76 1.1.1.2.8.2 jruoho * RETURN: A pointer to the allocated string segment. This segment must 77 1.1.1.2.8.2 jruoho * be deleted by the caller. 78 1.1.1.2.8.2 jruoho * 79 1.1.1.2.8.2 jruoho * DESCRIPTION: Allocate a buffer for a name string. Ensure allocated name 80 1.1.1.2.8.2 jruoho * string is long enough, and set up prefix if any. 81 1.1.1.2.8.2 jruoho * 82 1.1.1.2.8.2 jruoho ******************************************************************************/ 83 1.1.1.2.8.2 jruoho 84 1.1.1.2.8.2 jruoho static char * 85 1.1.1.2.8.2 jruoho AcpiExAllocateNameString ( 86 1.1.1.2.8.2 jruoho UINT32 PrefixCount, 87 1.1.1.2.8.2 jruoho UINT32 NumNameSegs) 88 1.1.1.2.8.2 jruoho { 89 1.1.1.2.8.2 jruoho char *TempPtr; 90 1.1.1.2.8.2 jruoho char *NameString; 91 1.1.1.2.8.2 jruoho UINT32 SizeNeeded; 92 1.1.1.2.8.2 jruoho 93 1.1.1.2.8.2 jruoho ACPI_FUNCTION_TRACE (ExAllocateNameString); 94 1.1.1.2.8.2 jruoho 95 1.1.1.2.8.2 jruoho 96 1.1.1.2.8.2 jruoho /* 97 1.1.1.2.8.2 jruoho * Allow room for all \ and ^ prefixes, all segments and a MultiNamePrefix. 98 1.1.1.2.8.2 jruoho * Also, one byte for the null terminator. 99 1.1.1.2.8.2 jruoho * This may actually be somewhat longer than needed. 100 1.1.1.2.8.2 jruoho */ 101 1.1.1.2.8.2 jruoho if (PrefixCount == ACPI_UINT32_MAX) 102 1.1.1.2.8.2 jruoho { 103 1.1.1.2.8.2 jruoho /* Special case for root */ 104 1.1.1.2.8.2 jruoho 105 1.1.1.2.8.2 jruoho SizeNeeded = 1 + (ACPI_NAME_SIZE * NumNameSegs) + 2 + 1; 106 1.1.1.2.8.2 jruoho } 107 1.1.1.2.8.2 jruoho else 108 1.1.1.2.8.2 jruoho { 109 1.1.1.2.8.2 jruoho SizeNeeded = PrefixCount + (ACPI_NAME_SIZE * NumNameSegs) + 2 + 1; 110 1.1.1.2.8.2 jruoho } 111 1.1.1.2.8.2 jruoho 112 1.1.1.2.8.2 jruoho /* 113 1.1.1.2.8.2 jruoho * Allocate a buffer for the name. 114 1.1.1.2.8.2 jruoho * This buffer must be deleted by the caller! 115 1.1.1.2.8.2 jruoho */ 116 1.1.1.2.8.2 jruoho NameString = ACPI_ALLOCATE (SizeNeeded); 117 1.1.1.2.8.2 jruoho if (!NameString) 118 1.1.1.2.8.2 jruoho { 119 1.1.1.2.8.2 jruoho ACPI_ERROR ((AE_INFO, 120 1.1.1.2.8.2 jruoho "Could not allocate size %u", SizeNeeded)); 121 1.1.1.2.8.2 jruoho return_PTR (NULL); 122 1.1.1.2.8.2 jruoho } 123 1.1.1.2.8.2 jruoho 124 1.1.1.2.8.2 jruoho TempPtr = NameString; 125 1.1.1.2.8.2 jruoho 126 1.1.1.2.8.2 jruoho /* Set up Root or Parent prefixes if needed */ 127 1.1.1.2.8.2 jruoho 128 1.1.1.2.8.2 jruoho if (PrefixCount == ACPI_UINT32_MAX) 129 1.1.1.2.8.2 jruoho { 130 1.1.1.2.8.2 jruoho *TempPtr++ = AML_ROOT_PREFIX; 131 1.1.1.2.8.2 jruoho } 132 1.1.1.2.8.2 jruoho else 133 1.1.1.2.8.2 jruoho { 134 1.1.1.2.8.2 jruoho while (PrefixCount--) 135 1.1.1.2.8.2 jruoho { 136 1.1.1.2.8.2 jruoho *TempPtr++ = AML_PARENT_PREFIX; 137 1.1.1.2.8.2 jruoho } 138 1.1.1.2.8.2 jruoho } 139 1.1.1.2.8.2 jruoho 140 1.1.1.2.8.2 jruoho 141 1.1.1.2.8.2 jruoho /* Set up Dual or Multi prefixes if needed */ 142 1.1.1.2.8.2 jruoho 143 1.1.1.2.8.2 jruoho if (NumNameSegs > 2) 144 1.1.1.2.8.2 jruoho { 145 1.1.1.2.8.2 jruoho /* Set up multi prefixes */ 146 1.1.1.2.8.2 jruoho 147 1.1.1.2.8.2 jruoho *TempPtr++ = AML_MULTI_NAME_PREFIX_OP; 148 1.1.1.2.8.2 jruoho *TempPtr++ = (char) NumNameSegs; 149 1.1.1.2.8.2 jruoho } 150 1.1.1.2.8.2 jruoho else if (2 == NumNameSegs) 151 1.1.1.2.8.2 jruoho { 152 1.1.1.2.8.2 jruoho /* Set up dual prefixes */ 153 1.1.1.2.8.2 jruoho 154 1.1.1.2.8.2 jruoho *TempPtr++ = AML_DUAL_NAME_PREFIX; 155 1.1.1.2.8.2 jruoho } 156 1.1.1.2.8.2 jruoho 157 1.1.1.2.8.2 jruoho /* 158 1.1.1.2.8.2 jruoho * Terminate string following prefixes. AcpiExNameSegment() will 159 1.1.1.2.8.2 jruoho * append the segment(s) 160 1.1.1.2.8.2 jruoho */ 161 1.1.1.2.8.2 jruoho *TempPtr = 0; 162 1.1.1.2.8.2 jruoho 163 1.1.1.2.8.2 jruoho return_PTR (NameString); 164 1.1.1.2.8.2 jruoho } 165 1.1.1.2.8.2 jruoho 166 1.1.1.2.8.2 jruoho /******************************************************************************* 167 1.1.1.2.8.2 jruoho * 168 1.1.1.2.8.2 jruoho * FUNCTION: AcpiExNameSegment 169 1.1.1.2.8.2 jruoho * 170 1.1.1.2.8.2 jruoho * PARAMETERS: InAmlAddress - Pointer to the name in the AML code 171 1.1.1.2.8.2 jruoho * NameString - Where to return the name. The name is appended 172 1.1.1.2.8.2 jruoho * to any existing string to form a namepath 173 1.1.1.2.8.2 jruoho * 174 1.1.1.2.8.2 jruoho * RETURN: Status 175 1.1.1.2.8.2 jruoho * 176 1.1.1.2.8.2 jruoho * DESCRIPTION: Extract an ACPI name (4 bytes) from the AML byte stream 177 1.1.1.2.8.2 jruoho * 178 1.1.1.2.8.2 jruoho ******************************************************************************/ 179 1.1.1.2.8.2 jruoho 180 1.1.1.2.8.2 jruoho static ACPI_STATUS 181 1.1.1.2.8.2 jruoho AcpiExNameSegment ( 182 1.1.1.2.8.2 jruoho UINT8 **InAmlAddress, 183 1.1.1.2.8.2 jruoho char *NameString) 184 1.1.1.2.8.2 jruoho { 185 1.1.1.2.8.2 jruoho char *AmlAddress = (void *) *InAmlAddress; 186 1.1.1.2.8.2 jruoho ACPI_STATUS Status = AE_OK; 187 1.1.1.2.8.2 jruoho UINT32 Index; 188 1.1.1.2.8.2 jruoho char CharBuf[5]; 189 1.1.1.2.8.2 jruoho 190 1.1.1.2.8.2 jruoho 191 1.1.1.2.8.2 jruoho ACPI_FUNCTION_TRACE (ExNameSegment); 192 1.1.1.2.8.2 jruoho 193 1.1.1.2.8.2 jruoho 194 1.1.1.2.8.2 jruoho /* 195 1.1.1.2.8.2 jruoho * If first character is a digit, then we know that we aren't looking at a 196 1.1.1.2.8.2 jruoho * valid name segment 197 1.1.1.2.8.2 jruoho */ 198 1.1.1.2.8.2 jruoho CharBuf[0] = *AmlAddress; 199 1.1.1.2.8.2 jruoho 200 1.1.1.2.8.2 jruoho if ('0' <= CharBuf[0] && CharBuf[0] <= '9') 201 1.1.1.2.8.2 jruoho { 202 1.1.1.2.8.2 jruoho ACPI_ERROR ((AE_INFO, "Invalid leading digit: %c", CharBuf[0])); 203 1.1.1.2.8.2 jruoho return_ACPI_STATUS (AE_CTRL_PENDING); 204 1.1.1.2.8.2 jruoho } 205 1.1.1.2.8.2 jruoho 206 1.1.1.2.8.2 jruoho ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "Bytes from stream:\n")); 207 1.1.1.2.8.2 jruoho 208 1.1.1.2.8.2 jruoho for (Index = 0; 209 1.1.1.2.8.2 jruoho (Index < ACPI_NAME_SIZE) && (AcpiUtValidAcpiChar (*AmlAddress, 0)); 210 1.1.1.2.8.2 jruoho Index++) 211 1.1.1.2.8.2 jruoho { 212 1.1.1.2.8.2 jruoho CharBuf[Index] = *AmlAddress++; 213 1.1.1.2.8.2 jruoho ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "%c\n", CharBuf[Index])); 214 1.1.1.2.8.2 jruoho } 215 1.1.1.2.8.2 jruoho 216 1.1.1.2.8.2 jruoho 217 1.1.1.2.8.2 jruoho /* Valid name segment */ 218 1.1.1.2.8.2 jruoho 219 1.1.1.2.8.2 jruoho if (Index == 4) 220 1.1.1.2.8.2 jruoho { 221 1.1.1.2.8.2 jruoho /* Found 4 valid characters */ 222 1.1.1.2.8.2 jruoho 223 1.1.1.2.8.2 jruoho CharBuf[4] = '\0'; 224 1.1.1.2.8.2 jruoho 225 1.1.1.2.8.2 jruoho if (NameString) 226 1.1.1.2.8.2 jruoho { 227 1.1.1.2.8.2 jruoho ACPI_STRCAT (NameString, CharBuf); 228 1.1.1.2.8.2 jruoho ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, 229 1.1.1.2.8.2 jruoho "Appended to - %s\n", NameString)); 230 1.1.1.2.8.2 jruoho } 231 1.1.1.2.8.2 jruoho else 232 1.1.1.2.8.2 jruoho { 233 1.1.1.2.8.2 jruoho ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, 234 1.1.1.2.8.2 jruoho "No Name string - %s\n", CharBuf)); 235 1.1.1.2.8.2 jruoho } 236 1.1.1.2.8.2 jruoho } 237 1.1.1.2.8.2 jruoho else if (Index == 0) 238 1.1.1.2.8.2 jruoho { 239 1.1.1.2.8.2 jruoho /* 240 1.1.1.2.8.2 jruoho * First character was not a valid name character, 241 1.1.1.2.8.2 jruoho * so we are looking at something other than a name. 242 1.1.1.2.8.2 jruoho */ 243 1.1.1.2.8.2 jruoho ACPI_DEBUG_PRINT ((ACPI_DB_INFO, 244 1.1.1.2.8.2 jruoho "Leading character is not alpha: %02Xh (not a name)\n", 245 1.1.1.2.8.2 jruoho CharBuf[0])); 246 1.1.1.2.8.2 jruoho Status = AE_CTRL_PENDING; 247 1.1.1.2.8.2 jruoho } 248 1.1.1.2.8.2 jruoho else 249 1.1.1.2.8.2 jruoho { 250 1.1.1.2.8.2 jruoho /* 251 1.1.1.2.8.2 jruoho * Segment started with one or more valid characters, but fewer than 252 1.1.1.2.8.2 jruoho * the required 4 253 1.1.1.2.8.2 jruoho */ 254 1.1.1.2.8.2 jruoho Status = AE_AML_BAD_NAME; 255 1.1.1.2.8.2 jruoho ACPI_ERROR ((AE_INFO, 256 1.1.1.2.8.2 jruoho "Bad character 0x%02x in name, at %p", 257 1.1.1.2.8.2 jruoho *AmlAddress, AmlAddress)); 258 1.1.1.2.8.2 jruoho } 259 1.1.1.2.8.2 jruoho 260 1.1.1.2.8.2 jruoho *InAmlAddress = ACPI_CAST_PTR (UINT8, AmlAddress); 261 1.1.1.2.8.2 jruoho return_ACPI_STATUS (Status); 262 1.1.1.2.8.2 jruoho } 263 1.1.1.2.8.2 jruoho 264 1.1.1.2.8.2 jruoho 265 1.1.1.2.8.2 jruoho /******************************************************************************* 266 1.1.1.2.8.2 jruoho * 267 1.1.1.2.8.2 jruoho * FUNCTION: AcpiExGetNameString 268 1.1.1.2.8.2 jruoho * 269 1.1.1.2.8.2 jruoho * PARAMETERS: DataType - Object type to be associated with this 270 1.1.1.2.8.2 jruoho * name 271 1.1.1.2.8.2 jruoho * InAmlAddress - Pointer to the namestring in the AML code 272 1.1.1.2.8.2 jruoho * OutNameString - Where the namestring is returned 273 1.1.1.2.8.2 jruoho * OutNameLength - Length of the returned string 274 1.1.1.2.8.2 jruoho * 275 1.1.1.2.8.2 jruoho * RETURN: Status, namestring and length 276 1.1.1.2.8.2 jruoho * 277 1.1.1.2.8.2 jruoho * DESCRIPTION: Extract a full namepath from the AML byte stream, 278 1.1.1.2.8.2 jruoho * including any prefixes. 279 1.1.1.2.8.2 jruoho * 280 1.1.1.2.8.2 jruoho ******************************************************************************/ 281 1.1.1.2.8.2 jruoho 282 1.1.1.2.8.2 jruoho ACPI_STATUS 283 1.1.1.2.8.2 jruoho AcpiExGetNameString ( 284 1.1.1.2.8.2 jruoho ACPI_OBJECT_TYPE DataType, 285 1.1.1.2.8.2 jruoho UINT8 *InAmlAddress, 286 1.1.1.2.8.2 jruoho char **OutNameString, 287 1.1.1.2.8.2 jruoho UINT32 *OutNameLength) 288 1.1.1.2.8.2 jruoho { 289 1.1.1.2.8.2 jruoho ACPI_STATUS Status = AE_OK; 290 1.1.1.2.8.2 jruoho UINT8 *AmlAddress = InAmlAddress; 291 1.1.1.2.8.2 jruoho char *NameString = NULL; 292 1.1.1.2.8.2 jruoho UINT32 NumSegments; 293 1.1.1.2.8.2 jruoho UINT32 PrefixCount = 0; 294 1.1.1.2.8.2 jruoho BOOLEAN HasPrefix = FALSE; 295 1.1.1.2.8.2 jruoho 296 1.1.1.2.8.2 jruoho 297 1.1.1.2.8.2 jruoho ACPI_FUNCTION_TRACE_PTR (ExGetNameString, AmlAddress); 298 1.1.1.2.8.2 jruoho 299 1.1.1.2.8.2 jruoho 300 1.1.1.2.8.2 jruoho if (ACPI_TYPE_LOCAL_REGION_FIELD == DataType || 301 1.1.1.2.8.2 jruoho ACPI_TYPE_LOCAL_BANK_FIELD == DataType || 302 1.1.1.2.8.2 jruoho ACPI_TYPE_LOCAL_INDEX_FIELD == DataType) 303 1.1.1.2.8.2 jruoho { 304 1.1.1.2.8.2 jruoho /* Disallow prefixes for types associated with FieldUnit names */ 305 1.1.1.2.8.2 jruoho 306 1.1.1.2.8.2 jruoho NameString = AcpiExAllocateNameString (0, 1); 307 1.1.1.2.8.2 jruoho if (!NameString) 308 1.1.1.2.8.2 jruoho { 309 1.1.1.2.8.2 jruoho Status = AE_NO_MEMORY; 310 1.1.1.2.8.2 jruoho } 311 1.1.1.2.8.2 jruoho else 312 1.1.1.2.8.2 jruoho { 313 1.1.1.2.8.2 jruoho Status = AcpiExNameSegment (&AmlAddress, NameString); 314 1.1.1.2.8.2 jruoho } 315 1.1.1.2.8.2 jruoho } 316 1.1.1.2.8.2 jruoho else 317 1.1.1.2.8.2 jruoho { 318 1.1.1.2.8.2 jruoho /* 319 1.1.1.2.8.2 jruoho * DataType is not a field name. 320 1.1.1.2.8.2 jruoho * Examine first character of name for root or parent prefix operators 321 1.1.1.2.8.2 jruoho */ 322 1.1.1.2.8.2 jruoho switch (*AmlAddress) 323 1.1.1.2.8.2 jruoho { 324 1.1.1.2.8.2 jruoho case AML_ROOT_PREFIX: 325 1.1.1.2.8.2 jruoho 326 1.1.1.2.8.2 jruoho ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "RootPrefix(\\) at %p\n", 327 1.1.1.2.8.2 jruoho AmlAddress)); 328 1.1.1.2.8.2 jruoho 329 1.1.1.2.8.2 jruoho /* 330 1.1.1.2.8.2 jruoho * Remember that we have a RootPrefix -- 331 1.1.1.2.8.2 jruoho * see comment in AcpiExAllocateNameString() 332 1.1.1.2.8.2 jruoho */ 333 1.1.1.2.8.2 jruoho AmlAddress++; 334 1.1.1.2.8.2 jruoho PrefixCount = ACPI_UINT32_MAX; 335 1.1.1.2.8.2 jruoho HasPrefix = TRUE; 336 1.1.1.2.8.2 jruoho break; 337 1.1.1.2.8.2 jruoho 338 1.1.1.2.8.2 jruoho 339 1.1.1.2.8.2 jruoho case AML_PARENT_PREFIX: 340 1.1.1.2.8.2 jruoho 341 1.1.1.2.8.2 jruoho /* Increment past possibly multiple parent prefixes */ 342 1.1.1.2.8.2 jruoho 343 1.1.1.2.8.2 jruoho do 344 1.1.1.2.8.2 jruoho { 345 1.1.1.2.8.2 jruoho ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "ParentPrefix (^) at %p\n", 346 1.1.1.2.8.2 jruoho AmlAddress)); 347 1.1.1.2.8.2 jruoho 348 1.1.1.2.8.2 jruoho AmlAddress++; 349 1.1.1.2.8.2 jruoho PrefixCount++; 350 1.1.1.2.8.2 jruoho 351 1.1.1.2.8.2 jruoho } while (*AmlAddress == AML_PARENT_PREFIX); 352 1.1.1.2.8.2 jruoho 353 1.1.1.2.8.2 jruoho HasPrefix = TRUE; 354 1.1.1.2.8.2 jruoho break; 355 1.1.1.2.8.2 jruoho 356 1.1.1.2.8.2 jruoho 357 1.1.1.2.8.2 jruoho default: 358 1.1.1.2.8.2 jruoho 359 1.1.1.2.8.2 jruoho /* Not a prefix character */ 360 1.1.1.2.8.2 jruoho 361 1.1.1.2.8.2 jruoho break; 362 1.1.1.2.8.2 jruoho } 363 1.1.1.2.8.2 jruoho 364 1.1.1.2.8.2 jruoho /* Examine first character of name for name segment prefix operator */ 365 1.1.1.2.8.2 jruoho 366 1.1.1.2.8.2 jruoho switch (*AmlAddress) 367 1.1.1.2.8.2 jruoho { 368 1.1.1.2.8.2 jruoho case AML_DUAL_NAME_PREFIX: 369 1.1.1.2.8.2 jruoho 370 1.1.1.2.8.2 jruoho ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "DualNamePrefix at %p\n", 371 1.1.1.2.8.2 jruoho AmlAddress)); 372 1.1.1.2.8.2 jruoho 373 1.1.1.2.8.2 jruoho AmlAddress++; 374 1.1.1.2.8.2 jruoho NameString = AcpiExAllocateNameString (PrefixCount, 2); 375 1.1.1.2.8.2 jruoho if (!NameString) 376 1.1.1.2.8.2 jruoho { 377 1.1.1.2.8.2 jruoho Status = AE_NO_MEMORY; 378 1.1.1.2.8.2 jruoho break; 379 1.1.1.2.8.2 jruoho } 380 1.1.1.2.8.2 jruoho 381 1.1.1.2.8.2 jruoho /* Indicate that we processed a prefix */ 382 1.1.1.2.8.2 jruoho 383 1.1.1.2.8.2 jruoho HasPrefix = TRUE; 384 1.1.1.2.8.2 jruoho 385 1.1.1.2.8.2 jruoho Status = AcpiExNameSegment (&AmlAddress, NameString); 386 1.1.1.2.8.2 jruoho if (ACPI_SUCCESS (Status)) 387 1.1.1.2.8.2 jruoho { 388 1.1.1.2.8.2 jruoho Status = AcpiExNameSegment (&AmlAddress, NameString); 389 1.1.1.2.8.2 jruoho } 390 1.1.1.2.8.2 jruoho break; 391 1.1.1.2.8.2 jruoho 392 1.1.1.2.8.2 jruoho 393 1.1.1.2.8.2 jruoho case AML_MULTI_NAME_PREFIX_OP: 394 1.1.1.2.8.2 jruoho 395 1.1.1.2.8.2 jruoho ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "MultiNamePrefix at %p\n", 396 1.1.1.2.8.2 jruoho AmlAddress)); 397 1.1.1.2.8.2 jruoho 398 1.1.1.2.8.2 jruoho /* Fetch count of segments remaining in name path */ 399 1.1.1.2.8.2 jruoho 400 1.1.1.2.8.2 jruoho AmlAddress++; 401 1.1.1.2.8.2 jruoho NumSegments = *AmlAddress; 402 1.1.1.2.8.2 jruoho 403 1.1.1.2.8.2 jruoho NameString = AcpiExAllocateNameString (PrefixCount, NumSegments); 404 1.1.1.2.8.2 jruoho if (!NameString) 405 1.1.1.2.8.2 jruoho { 406 1.1.1.2.8.2 jruoho Status = AE_NO_MEMORY; 407 1.1.1.2.8.2 jruoho break; 408 1.1.1.2.8.2 jruoho } 409 1.1.1.2.8.2 jruoho 410 1.1.1.2.8.2 jruoho /* Indicate that we processed a prefix */ 411 1.1.1.2.8.2 jruoho 412 1.1.1.2.8.2 jruoho AmlAddress++; 413 1.1.1.2.8.2 jruoho HasPrefix = TRUE; 414 1.1.1.2.8.2 jruoho 415 1.1.1.2.8.2 jruoho while (NumSegments && 416 1.1.1.2.8.2 jruoho (Status = AcpiExNameSegment (&AmlAddress, NameString)) == 417 1.1.1.2.8.2 jruoho AE_OK) 418 1.1.1.2.8.2 jruoho { 419 1.1.1.2.8.2 jruoho NumSegments--; 420 1.1.1.2.8.2 jruoho } 421 1.1.1.2.8.2 jruoho 422 1.1.1.2.8.2 jruoho break; 423 1.1.1.2.8.2 jruoho 424 1.1.1.2.8.2 jruoho 425 1.1.1.2.8.2 jruoho case 0: 426 1.1.1.2.8.2 jruoho 427 1.1.1.2.8.2 jruoho /* NullName valid as of 8-12-98 ASL/AML Grammar Update */ 428 1.1.1.2.8.2 jruoho 429 1.1.1.2.8.2 jruoho if (PrefixCount == ACPI_UINT32_MAX) 430 1.1.1.2.8.2 jruoho { 431 1.1.1.2.8.2 jruoho ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 432 1.1.1.2.8.2 jruoho "NameSeg is \"\\\" followed by NULL\n")); 433 1.1.1.2.8.2 jruoho } 434 1.1.1.2.8.2 jruoho 435 1.1.1.2.8.2 jruoho /* Consume the NULL byte */ 436 1.1.1.2.8.2 jruoho 437 1.1.1.2.8.2 jruoho AmlAddress++; 438 1.1.1.2.8.2 jruoho NameString = AcpiExAllocateNameString (PrefixCount, 0); 439 1.1.1.2.8.2 jruoho if (!NameString) 440 1.1.1.2.8.2 jruoho { 441 1.1.1.2.8.2 jruoho Status = AE_NO_MEMORY; 442 1.1.1.2.8.2 jruoho break; 443 1.1.1.2.8.2 jruoho } 444 1.1.1.2.8.2 jruoho 445 1.1.1.2.8.2 jruoho break; 446 1.1.1.2.8.2 jruoho 447 1.1.1.2.8.2 jruoho 448 1.1.1.2.8.2 jruoho default: 449 1.1.1.2.8.2 jruoho 450 1.1.1.2.8.2 jruoho /* Name segment string */ 451 1.1.1.2.8.2 jruoho 452 1.1.1.2.8.2 jruoho NameString = AcpiExAllocateNameString (PrefixCount, 1); 453 1.1.1.2.8.2 jruoho if (!NameString) 454 1.1.1.2.8.2 jruoho { 455 1.1.1.2.8.2 jruoho Status = AE_NO_MEMORY; 456 1.1.1.2.8.2 jruoho break; 457 1.1.1.2.8.2 jruoho } 458 1.1.1.2.8.2 jruoho 459 1.1.1.2.8.2 jruoho Status = AcpiExNameSegment (&AmlAddress, NameString); 460 1.1.1.2.8.2 jruoho break; 461 1.1.1.2.8.2 jruoho } 462 1.1.1.2.8.2 jruoho } 463 1.1.1.2.8.2 jruoho 464 1.1.1.2.8.2 jruoho if (AE_CTRL_PENDING == Status && HasPrefix) 465 1.1.1.2.8.2 jruoho { 466 1.1.1.2.8.2 jruoho /* Ran out of segments after processing a prefix */ 467 1.1.1.2.8.2 jruoho 468 1.1.1.2.8.2 jruoho ACPI_ERROR ((AE_INFO, 469 1.1.1.2.8.2 jruoho "Malformed Name at %p", NameString)); 470 1.1.1.2.8.2 jruoho Status = AE_AML_BAD_NAME; 471 1.1.1.2.8.2 jruoho } 472 1.1.1.2.8.2 jruoho 473 1.1.1.2.8.2 jruoho if (ACPI_FAILURE (Status)) 474 1.1.1.2.8.2 jruoho { 475 1.1.1.2.8.2 jruoho if (NameString) 476 1.1.1.2.8.2 jruoho { 477 1.1.1.2.8.2 jruoho ACPI_FREE (NameString); 478 1.1.1.2.8.2 jruoho } 479 1.1.1.2.8.2 jruoho return_ACPI_STATUS (Status); 480 1.1.1.2.8.2 jruoho } 481 1.1.1.2.8.2 jruoho 482 1.1.1.2.8.2 jruoho *OutNameString = NameString; 483 1.1.1.2.8.2 jruoho *OutNameLength = (UINT32) (AmlAddress - InAmlAddress); 484 1.1.1.2.8.2 jruoho 485 1.1.1.2.8.2 jruoho return_ACPI_STATUS (Status); 486 1.1.1.2.8.2 jruoho } 487 1.1.1.2.8.2 jruoho 488 1.1.1.2.8.2 jruoho 489
Indexes created Wed Oct 22 06:10:02 GMT 2025