psparse.c revision 1.1.1.2.2.2
1 1.1.1.2.2.2 bouyer /****************************************************************************** 2 1.1.1.2.2.2 bouyer * 3 1.1.1.2.2.2 bouyer * Module Name: psparse - Parser top level AML parse routines 4 1.1.1.2.2.2 bouyer * 5 1.1.1.2.2.2 bouyer *****************************************************************************/ 6 1.1.1.2.2.2 bouyer 7 1.1.1.2.2.2 bouyer /* 8 1.1.1.2.2.2 bouyer * Copyright (C) 2000 - 2011, Intel Corp. 9 1.1.1.2.2.2 bouyer * All rights reserved. 10 1.1.1.2.2.2 bouyer * 11 1.1.1.2.2.2 bouyer * Redistribution and use in source and binary forms, with or without 12 1.1.1.2.2.2 bouyer * modification, are permitted provided that the following conditions 13 1.1.1.2.2.2 bouyer * are met: 14 1.1.1.2.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 15 1.1.1.2.2.2 bouyer * notice, this list of conditions, and the following disclaimer, 16 1.1.1.2.2.2 bouyer * without modification. 17 1.1.1.2.2.2 bouyer * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18 1.1.1.2.2.2 bouyer * substantially similar to the "NO WARRANTY" disclaimer below 19 1.1.1.2.2.2 bouyer * ("Disclaimer") and any redistribution must be conditioned upon 20 1.1.1.2.2.2 bouyer * including a substantially similar Disclaimer requirement for further 21 1.1.1.2.2.2 bouyer * binary redistribution. 22 1.1.1.2.2.2 bouyer * 3. Neither the names of the above-listed copyright holders nor the names 23 1.1.1.2.2.2 bouyer * of any contributors may be used to endorse or promote products derived 24 1.1.1.2.2.2 bouyer * from this software without specific prior written permission. 25 1.1.1.2.2.2 bouyer * 26 1.1.1.2.2.2 bouyer * Alternatively, this software may be distributed under the terms of the 27 1.1.1.2.2.2 bouyer * GNU General Public License ("GPL") version 2 as published by the Free 28 1.1.1.2.2.2 bouyer * Software Foundation. 29 1.1.1.2.2.2 bouyer * 30 1.1.1.2.2.2 bouyer * NO WARRANTY 31 1.1.1.2.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32 1.1.1.2.2.2 bouyer * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33 1.1.1.2.2.2 bouyer * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 34 1.1.1.2.2.2 bouyer * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35 1.1.1.2.2.2 bouyer * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 1.1.1.2.2.2 bouyer * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 1.1.1.2.2.2 bouyer * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 1.1.1.2.2.2 bouyer * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39 1.1.1.2.2.2 bouyer * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40 1.1.1.2.2.2 bouyer * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 1.1.1.2.2.2 bouyer * POSSIBILITY OF SUCH DAMAGES. 42 1.1.1.2.2.2 bouyer */ 43 1.1.1.2.2.2 bouyer 44 1.1.1.2.2.2 bouyer 45 1.1.1.2.2.2 bouyer /* 46 1.1.1.2.2.2 bouyer * Parse the AML and build an operation tree as most interpreters, 47 1.1.1.2.2.2 bouyer * like Perl, do. Parsing is done by hand rather than with a YACC 48 1.1.1.2.2.2 bouyer * generated parser to tightly constrain stack and dynamic memory 49 1.1.1.2.2.2 bouyer * usage. At the same time, parsing is kept flexible and the code 50 1.1.1.2.2.2 bouyer * fairly compact by parsing based on a list of AML opcode 51 1.1.1.2.2.2 bouyer * templates in AmlOpInfo[] 52 1.1.1.2.2.2 bouyer */ 53 1.1.1.2.2.2 bouyer 54 1.1.1.2.2.2 bouyer #include "acpi.h" 55 1.1.1.2.2.2 bouyer #include "accommon.h" 56 1.1.1.2.2.2 bouyer #include "acparser.h" 57 1.1.1.2.2.2 bouyer #include "acdispat.h" 58 1.1.1.2.2.2 bouyer #include "amlcode.h" 59 1.1.1.2.2.2 bouyer #include "acinterp.h" 60 1.1.1.2.2.2 bouyer 61 1.1.1.2.2.2 bouyer #define _COMPONENT ACPI_PARSER 62 1.1.1.2.2.2 bouyer ACPI_MODULE_NAME ("psparse") 63 1.1.1.2.2.2 bouyer 64 1.1.1.2.2.2 bouyer 65 1.1.1.2.2.2 bouyer /******************************************************************************* 66 1.1.1.2.2.2 bouyer * 67 1.1.1.2.2.2 bouyer * FUNCTION: AcpiPsGetOpcodeSize 68 1.1.1.2.2.2 bouyer * 69 1.1.1.2.2.2 bouyer * PARAMETERS: Opcode - An AML opcode 70 1.1.1.2.2.2 bouyer * 71 1.1.1.2.2.2 bouyer * RETURN: Size of the opcode, in bytes (1 or 2) 72 1.1.1.2.2.2 bouyer * 73 1.1.1.2.2.2 bouyer * DESCRIPTION: Get the size of the current opcode. 74 1.1.1.2.2.2 bouyer * 75 1.1.1.2.2.2 bouyer ******************************************************************************/ 76 1.1.1.2.2.2 bouyer 77 1.1.1.2.2.2 bouyer UINT32 78 1.1.1.2.2.2 bouyer AcpiPsGetOpcodeSize ( 79 1.1.1.2.2.2 bouyer UINT32 Opcode) 80 1.1.1.2.2.2 bouyer { 81 1.1.1.2.2.2 bouyer 82 1.1.1.2.2.2 bouyer /* Extended (2-byte) opcode if > 255 */ 83 1.1.1.2.2.2 bouyer 84 1.1.1.2.2.2 bouyer if (Opcode > 0x00FF) 85 1.1.1.2.2.2 bouyer { 86 1.1.1.2.2.2 bouyer return (2); 87 1.1.1.2.2.2 bouyer } 88 1.1.1.2.2.2 bouyer 89 1.1.1.2.2.2 bouyer /* Otherwise, just a single byte opcode */ 90 1.1.1.2.2.2 bouyer 91 1.1.1.2.2.2 bouyer return (1); 92 1.1.1.2.2.2 bouyer } 93 1.1.1.2.2.2 bouyer 94 1.1.1.2.2.2 bouyer 95 1.1.1.2.2.2 bouyer /******************************************************************************* 96 1.1.1.2.2.2 bouyer * 97 1.1.1.2.2.2 bouyer * FUNCTION: AcpiPsPeekOpcode 98 1.1.1.2.2.2 bouyer * 99 1.1.1.2.2.2 bouyer * PARAMETERS: ParserState - A parser state object 100 1.1.1.2.2.2 bouyer * 101 1.1.1.2.2.2 bouyer * RETURN: Next AML opcode 102 1.1.1.2.2.2 bouyer * 103 1.1.1.2.2.2 bouyer * DESCRIPTION: Get next AML opcode (without incrementing AML pointer) 104 1.1.1.2.2.2 bouyer * 105 1.1.1.2.2.2 bouyer ******************************************************************************/ 106 1.1.1.2.2.2 bouyer 107 1.1.1.2.2.2 bouyer UINT16 108 1.1.1.2.2.2 bouyer AcpiPsPeekOpcode ( 109 1.1.1.2.2.2 bouyer ACPI_PARSE_STATE *ParserState) 110 1.1.1.2.2.2 bouyer { 111 1.1.1.2.2.2 bouyer UINT8 *Aml; 112 1.1.1.2.2.2 bouyer UINT16 Opcode; 113 1.1.1.2.2.2 bouyer 114 1.1.1.2.2.2 bouyer 115 1.1.1.2.2.2 bouyer Aml = ParserState->Aml; 116 1.1.1.2.2.2 bouyer Opcode = (UINT16) ACPI_GET8 (Aml); 117 1.1.1.2.2.2 bouyer 118 1.1.1.2.2.2 bouyer if (Opcode == AML_EXTENDED_OP_PREFIX) 119 1.1.1.2.2.2 bouyer { 120 1.1.1.2.2.2 bouyer /* Extended opcode, get the second opcode byte */ 121 1.1.1.2.2.2 bouyer 122 1.1.1.2.2.2 bouyer Aml++; 123 1.1.1.2.2.2 bouyer Opcode = (UINT16) ((Opcode << 8) | ACPI_GET8 (Aml)); 124 1.1.1.2.2.2 bouyer } 125 1.1.1.2.2.2 bouyer 126 1.1.1.2.2.2 bouyer return (Opcode); 127 1.1.1.2.2.2 bouyer } 128 1.1.1.2.2.2 bouyer 129 1.1.1.2.2.2 bouyer 130 1.1.1.2.2.2 bouyer /******************************************************************************* 131 1.1.1.2.2.2 bouyer * 132 1.1.1.2.2.2 bouyer * FUNCTION: AcpiPsCompleteThisOp 133 1.1.1.2.2.2 bouyer * 134 1.1.1.2.2.2 bouyer * PARAMETERS: WalkState - Current State 135 1.1.1.2.2.2 bouyer * Op - Op to complete 136 1.1.1.2.2.2 bouyer * 137 1.1.1.2.2.2 bouyer * RETURN: Status 138 1.1.1.2.2.2 bouyer * 139 1.1.1.2.2.2 bouyer * DESCRIPTION: Perform any cleanup at the completion of an Op. 140 1.1.1.2.2.2 bouyer * 141 1.1.1.2.2.2 bouyer ******************************************************************************/ 142 1.1.1.2.2.2 bouyer 143 1.1.1.2.2.2 bouyer ACPI_STATUS 144 1.1.1.2.2.2 bouyer AcpiPsCompleteThisOp ( 145 1.1.1.2.2.2 bouyer ACPI_WALK_STATE *WalkState, 146 1.1.1.2.2.2 bouyer ACPI_PARSE_OBJECT *Op) 147 1.1.1.2.2.2 bouyer { 148 1.1.1.2.2.2 bouyer ACPI_PARSE_OBJECT *Prev; 149 1.1.1.2.2.2 bouyer ACPI_PARSE_OBJECT *Next; 150 1.1.1.2.2.2 bouyer const ACPI_OPCODE_INFO *ParentInfo; 151 1.1.1.2.2.2 bouyer ACPI_PARSE_OBJECT *ReplacementOp = NULL; 152 1.1.1.2.2.2 bouyer ACPI_STATUS Status = AE_OK; 153 1.1.1.2.2.2 bouyer 154 1.1.1.2.2.2 bouyer 155 1.1.1.2.2.2 bouyer ACPI_FUNCTION_TRACE_PTR (PsCompleteThisOp, Op); 156 1.1.1.2.2.2 bouyer 157 1.1.1.2.2.2 bouyer 158 1.1.1.2.2.2 bouyer /* Check for null Op, can happen if AML code is corrupt */ 159 1.1.1.2.2.2 bouyer 160 1.1.1.2.2.2 bouyer if (!Op) 161 1.1.1.2.2.2 bouyer { 162 1.1.1.2.2.2 bouyer return_ACPI_STATUS (AE_OK); /* OK for now */ 163 1.1.1.2.2.2 bouyer } 164 1.1.1.2.2.2 bouyer 165 1.1.1.2.2.2 bouyer /* Delete this op and the subtree below it if asked to */ 166 1.1.1.2.2.2 bouyer 167 1.1.1.2.2.2 bouyer if (((WalkState->ParseFlags & ACPI_PARSE_TREE_MASK) != ACPI_PARSE_DELETE_TREE) || 168 1.1.1.2.2.2 bouyer (WalkState->OpInfo->Class == AML_CLASS_ARGUMENT)) 169 1.1.1.2.2.2 bouyer { 170 1.1.1.2.2.2 bouyer return_ACPI_STATUS (AE_OK); 171 1.1.1.2.2.2 bouyer } 172 1.1.1.2.2.2 bouyer 173 1.1.1.2.2.2 bouyer /* Make sure that we only delete this subtree */ 174 1.1.1.2.2.2 bouyer 175 1.1.1.2.2.2 bouyer if (Op->Common.Parent) 176 1.1.1.2.2.2 bouyer { 177 1.1.1.2.2.2 bouyer Prev = Op->Common.Parent->Common.Value.Arg; 178 1.1.1.2.2.2 bouyer if (!Prev) 179 1.1.1.2.2.2 bouyer { 180 1.1.1.2.2.2 bouyer /* Nothing more to do */ 181 1.1.1.2.2.2 bouyer 182 1.1.1.2.2.2 bouyer goto Cleanup; 183 1.1.1.2.2.2 bouyer } 184 1.1.1.2.2.2 bouyer 185 1.1.1.2.2.2 bouyer /* 186 1.1.1.2.2.2 bouyer * Check if we need to replace the operator and its subtree 187 1.1.1.2.2.2 bouyer * with a return value op (placeholder op) 188 1.1.1.2.2.2 bouyer */ 189 1.1.1.2.2.2 bouyer ParentInfo = AcpiPsGetOpcodeInfo (Op->Common.Parent->Common.AmlOpcode); 190 1.1.1.2.2.2 bouyer 191 1.1.1.2.2.2 bouyer switch (ParentInfo->Class) 192 1.1.1.2.2.2 bouyer { 193 1.1.1.2.2.2 bouyer case AML_CLASS_CONTROL: 194 1.1.1.2.2.2 bouyer break; 195 1.1.1.2.2.2 bouyer 196 1.1.1.2.2.2 bouyer case AML_CLASS_CREATE: 197 1.1.1.2.2.2 bouyer 198 1.1.1.2.2.2 bouyer /* 199 1.1.1.2.2.2 bouyer * These opcodes contain TermArg operands. The current 200 1.1.1.2.2.2 bouyer * op must be replaced by a placeholder return op 201 1.1.1.2.2.2 bouyer */ 202 1.1.1.2.2.2 bouyer ReplacementOp = AcpiPsAllocOp (AML_INT_RETURN_VALUE_OP); 203 1.1.1.2.2.2 bouyer if (!ReplacementOp) 204 1.1.1.2.2.2 bouyer { 205 1.1.1.2.2.2 bouyer Status = AE_NO_MEMORY; 206 1.1.1.2.2.2 bouyer } 207 1.1.1.2.2.2 bouyer break; 208 1.1.1.2.2.2 bouyer 209 1.1.1.2.2.2 bouyer case AML_CLASS_NAMED_OBJECT: 210 1.1.1.2.2.2 bouyer 211 1.1.1.2.2.2 bouyer /* 212 1.1.1.2.2.2 bouyer * These opcodes contain TermArg operands. The current 213 1.1.1.2.2.2 bouyer * op must be replaced by a placeholder return op 214 1.1.1.2.2.2 bouyer */ 215 1.1.1.2.2.2 bouyer if ((Op->Common.Parent->Common.AmlOpcode == AML_REGION_OP) || 216 1.1.1.2.2.2 bouyer (Op->Common.Parent->Common.AmlOpcode == AML_DATA_REGION_OP) || 217 1.1.1.2.2.2 bouyer (Op->Common.Parent->Common.AmlOpcode == AML_BUFFER_OP) || 218 1.1.1.2.2.2 bouyer (Op->Common.Parent->Common.AmlOpcode == AML_PACKAGE_OP) || 219 1.1.1.2.2.2 bouyer (Op->Common.Parent->Common.AmlOpcode == AML_BANK_FIELD_OP) || 220 1.1.1.2.2.2 bouyer (Op->Common.Parent->Common.AmlOpcode == AML_VAR_PACKAGE_OP)) 221 1.1.1.2.2.2 bouyer { 222 1.1.1.2.2.2 bouyer ReplacementOp = AcpiPsAllocOp (AML_INT_RETURN_VALUE_OP); 223 1.1.1.2.2.2 bouyer if (!ReplacementOp) 224 1.1.1.2.2.2 bouyer { 225 1.1.1.2.2.2 bouyer Status = AE_NO_MEMORY; 226 1.1.1.2.2.2 bouyer } 227 1.1.1.2.2.2 bouyer } 228 1.1.1.2.2.2 bouyer else if ((Op->Common.Parent->Common.AmlOpcode == AML_NAME_OP) && 229 1.1.1.2.2.2 bouyer (WalkState->PassNumber <= ACPI_IMODE_LOAD_PASS2)) 230 1.1.1.2.2.2 bouyer { 231 1.1.1.2.2.2 bouyer if ((Op->Common.AmlOpcode == AML_BUFFER_OP) || 232 1.1.1.2.2.2 bouyer (Op->Common.AmlOpcode == AML_PACKAGE_OP) || 233 1.1.1.2.2.2 bouyer (Op->Common.AmlOpcode == AML_VAR_PACKAGE_OP)) 234 1.1.1.2.2.2 bouyer { 235 1.1.1.2.2.2 bouyer ReplacementOp = AcpiPsAllocOp (Op->Common.AmlOpcode); 236 1.1.1.2.2.2 bouyer if (!ReplacementOp) 237 1.1.1.2.2.2 bouyer { 238 1.1.1.2.2.2 bouyer Status = AE_NO_MEMORY; 239 1.1.1.2.2.2 bouyer } 240 1.1.1.2.2.2 bouyer else 241 1.1.1.2.2.2 bouyer { 242 1.1.1.2.2.2 bouyer ReplacementOp->Named.Data = Op->Named.Data; 243 1.1.1.2.2.2 bouyer ReplacementOp->Named.Length = Op->Named.Length; 244 1.1.1.2.2.2 bouyer } 245 1.1.1.2.2.2 bouyer } 246 1.1.1.2.2.2 bouyer } 247 1.1.1.2.2.2 bouyer break; 248 1.1.1.2.2.2 bouyer 249 1.1.1.2.2.2 bouyer default: 250 1.1.1.2.2.2 bouyer 251 1.1.1.2.2.2 bouyer ReplacementOp = AcpiPsAllocOp (AML_INT_RETURN_VALUE_OP); 252 1.1.1.2.2.2 bouyer if (!ReplacementOp) 253 1.1.1.2.2.2 bouyer { 254 1.1.1.2.2.2 bouyer Status = AE_NO_MEMORY; 255 1.1.1.2.2.2 bouyer } 256 1.1.1.2.2.2 bouyer } 257 1.1.1.2.2.2 bouyer 258 1.1.1.2.2.2 bouyer /* We must unlink this op from the parent tree */ 259 1.1.1.2.2.2 bouyer 260 1.1.1.2.2.2 bouyer if (Prev == Op) 261 1.1.1.2.2.2 bouyer { 262 1.1.1.2.2.2 bouyer /* This op is the first in the list */ 263 1.1.1.2.2.2 bouyer 264 1.1.1.2.2.2 bouyer if (ReplacementOp) 265 1.1.1.2.2.2 bouyer { 266 1.1.1.2.2.2 bouyer ReplacementOp->Common.Parent = Op->Common.Parent; 267 1.1.1.2.2.2 bouyer ReplacementOp->Common.Value.Arg = NULL; 268 1.1.1.2.2.2 bouyer ReplacementOp->Common.Node = Op->Common.Node; 269 1.1.1.2.2.2 bouyer Op->Common.Parent->Common.Value.Arg = ReplacementOp; 270 1.1.1.2.2.2 bouyer ReplacementOp->Common.Next = Op->Common.Next; 271 1.1.1.2.2.2 bouyer } 272 1.1.1.2.2.2 bouyer else 273 1.1.1.2.2.2 bouyer { 274 1.1.1.2.2.2 bouyer Op->Common.Parent->Common.Value.Arg = Op->Common.Next; 275 1.1.1.2.2.2 bouyer } 276 1.1.1.2.2.2 bouyer } 277 1.1.1.2.2.2 bouyer 278 1.1.1.2.2.2 bouyer /* Search the parent list */ 279 1.1.1.2.2.2 bouyer 280 1.1.1.2.2.2 bouyer else while (Prev) 281 1.1.1.2.2.2 bouyer { 282 1.1.1.2.2.2 bouyer /* Traverse all siblings in the parent's argument list */ 283 1.1.1.2.2.2 bouyer 284 1.1.1.2.2.2 bouyer Next = Prev->Common.Next; 285 1.1.1.2.2.2 bouyer if (Next == Op) 286 1.1.1.2.2.2 bouyer { 287 1.1.1.2.2.2 bouyer if (ReplacementOp) 288 1.1.1.2.2.2 bouyer { 289 1.1.1.2.2.2 bouyer ReplacementOp->Common.Parent = Op->Common.Parent; 290 1.1.1.2.2.2 bouyer ReplacementOp->Common.Value.Arg = NULL; 291 1.1.1.2.2.2 bouyer ReplacementOp->Common.Node = Op->Common.Node; 292 1.1.1.2.2.2 bouyer Prev->Common.Next = ReplacementOp; 293 1.1.1.2.2.2 bouyer ReplacementOp->Common.Next = Op->Common.Next; 294 1.1.1.2.2.2 bouyer Next = NULL; 295 1.1.1.2.2.2 bouyer } 296 1.1.1.2.2.2 bouyer else 297 1.1.1.2.2.2 bouyer { 298 1.1.1.2.2.2 bouyer Prev->Common.Next = Op->Common.Next; 299 1.1.1.2.2.2 bouyer Next = NULL; 300 1.1.1.2.2.2 bouyer } 301 1.1.1.2.2.2 bouyer } 302 1.1.1.2.2.2 bouyer Prev = Next; 303 1.1.1.2.2.2 bouyer } 304 1.1.1.2.2.2 bouyer } 305 1.1.1.2.2.2 bouyer 306 1.1.1.2.2.2 bouyer 307 1.1.1.2.2.2 bouyer Cleanup: 308 1.1.1.2.2.2 bouyer 309 1.1.1.2.2.2 bouyer /* Now we can actually delete the subtree rooted at Op */ 310 1.1.1.2.2.2 bouyer 311 1.1.1.2.2.2 bouyer AcpiPsDeleteParseTree (Op); 312 1.1.1.2.2.2 bouyer return_ACPI_STATUS (Status); 313 1.1.1.2.2.2 bouyer } 314 1.1.1.2.2.2 bouyer 315 1.1.1.2.2.2 bouyer 316 1.1.1.2.2.2 bouyer /******************************************************************************* 317 1.1.1.2.2.2 bouyer * 318 1.1.1.2.2.2 bouyer * FUNCTION: AcpiPsNextParseState 319 1.1.1.2.2.2 bouyer * 320 1.1.1.2.2.2 bouyer * PARAMETERS: WalkState - Current state 321 1.1.1.2.2.2 bouyer * Op - Current parse op 322 1.1.1.2.2.2 bouyer * CallbackStatus - Status from previous operation 323 1.1.1.2.2.2 bouyer * 324 1.1.1.2.2.2 bouyer * RETURN: Status 325 1.1.1.2.2.2 bouyer * 326 1.1.1.2.2.2 bouyer * DESCRIPTION: Update the parser state based upon the return exception from 327 1.1.1.2.2.2 bouyer * the parser callback. 328 1.1.1.2.2.2 bouyer * 329 1.1.1.2.2.2 bouyer ******************************************************************************/ 330 1.1.1.2.2.2 bouyer 331 1.1.1.2.2.2 bouyer ACPI_STATUS 332 1.1.1.2.2.2 bouyer AcpiPsNextParseState ( 333 1.1.1.2.2.2 bouyer ACPI_WALK_STATE *WalkState, 334 1.1.1.2.2.2 bouyer ACPI_PARSE_OBJECT *Op, 335 1.1.1.2.2.2 bouyer ACPI_STATUS CallbackStatus) 336 1.1.1.2.2.2 bouyer { 337 1.1.1.2.2.2 bouyer ACPI_PARSE_STATE *ParserState = &WalkState->ParserState; 338 1.1.1.2.2.2 bouyer ACPI_STATUS Status = AE_CTRL_PENDING; 339 1.1.1.2.2.2 bouyer 340 1.1.1.2.2.2 bouyer 341 1.1.1.2.2.2 bouyer ACPI_FUNCTION_TRACE_PTR (PsNextParseState, Op); 342 1.1.1.2.2.2 bouyer 343 1.1.1.2.2.2 bouyer 344 1.1.1.2.2.2 bouyer switch (CallbackStatus) 345 1.1.1.2.2.2 bouyer { 346 1.1.1.2.2.2 bouyer case AE_CTRL_TERMINATE: 347 1.1.1.2.2.2 bouyer /* 348 1.1.1.2.2.2 bouyer * A control method was terminated via a RETURN statement. 349 1.1.1.2.2.2 bouyer * The walk of this method is complete. 350 1.1.1.2.2.2 bouyer */ 351 1.1.1.2.2.2 bouyer ParserState->Aml = ParserState->AmlEnd; 352 1.1.1.2.2.2 bouyer Status = AE_CTRL_TERMINATE; 353 1.1.1.2.2.2 bouyer break; 354 1.1.1.2.2.2 bouyer 355 1.1.1.2.2.2 bouyer 356 1.1.1.2.2.2 bouyer case AE_CTRL_BREAK: 357 1.1.1.2.2.2 bouyer 358 1.1.1.2.2.2 bouyer ParserState->Aml = WalkState->AmlLastWhile; 359 1.1.1.2.2.2 bouyer WalkState->ControlState->Common.Value = FALSE; 360 1.1.1.2.2.2 bouyer Status = AE_CTRL_BREAK; 361 1.1.1.2.2.2 bouyer break; 362 1.1.1.2.2.2 bouyer 363 1.1.1.2.2.2 bouyer 364 1.1.1.2.2.2 bouyer case AE_CTRL_CONTINUE: 365 1.1.1.2.2.2 bouyer 366 1.1.1.2.2.2 bouyer ParserState->Aml = WalkState->AmlLastWhile; 367 1.1.1.2.2.2 bouyer Status = AE_CTRL_CONTINUE; 368 1.1.1.2.2.2 bouyer break; 369 1.1.1.2.2.2 bouyer 370 1.1.1.2.2.2 bouyer 371 1.1.1.2.2.2 bouyer case AE_CTRL_PENDING: 372 1.1.1.2.2.2 bouyer 373 1.1.1.2.2.2 bouyer ParserState->Aml = WalkState->AmlLastWhile; 374 1.1.1.2.2.2 bouyer break; 375 1.1.1.2.2.2 bouyer 376 1.1.1.2.2.2 bouyer #if 0 377 1.1.1.2.2.2 bouyer case AE_CTRL_SKIP: 378 1.1.1.2.2.2 bouyer 379 1.1.1.2.2.2 bouyer ParserState->Aml = ParserState->Scope->ParseScope.PkgEnd; 380 1.1.1.2.2.2 bouyer Status = AE_OK; 381 1.1.1.2.2.2 bouyer break; 382 1.1.1.2.2.2 bouyer #endif 383 1.1.1.2.2.2 bouyer 384 1.1.1.2.2.2 bouyer case AE_CTRL_TRUE: 385 1.1.1.2.2.2 bouyer /* 386 1.1.1.2.2.2 bouyer * Predicate of an IF was true, and we are at the matching ELSE. 387 1.1.1.2.2.2 bouyer * Just close out this package 388 1.1.1.2.2.2 bouyer */ 389 1.1.1.2.2.2 bouyer ParserState->Aml = AcpiPsGetNextPackageEnd (ParserState); 390 1.1.1.2.2.2 bouyer Status = AE_CTRL_PENDING; 391 1.1.1.2.2.2 bouyer break; 392 1.1.1.2.2.2 bouyer 393 1.1.1.2.2.2 bouyer 394 1.1.1.2.2.2 bouyer case AE_CTRL_FALSE: 395 1.1.1.2.2.2 bouyer /* 396 1.1.1.2.2.2 bouyer * Either an IF/WHILE Predicate was false or we encountered a BREAK 397 1.1.1.2.2.2 bouyer * opcode. In both cases, we do not execute the rest of the 398 1.1.1.2.2.2 bouyer * package; We simply close out the parent (finishing the walk of 399 1.1.1.2.2.2 bouyer * this branch of the tree) and continue execution at the parent 400 1.1.1.2.2.2 bouyer * level. 401 1.1.1.2.2.2 bouyer */ 402 1.1.1.2.2.2 bouyer ParserState->Aml = ParserState->Scope->ParseScope.PkgEnd; 403 1.1.1.2.2.2 bouyer 404 1.1.1.2.2.2 bouyer /* In the case of a BREAK, just force a predicate (if any) to FALSE */ 405 1.1.1.2.2.2 bouyer 406 1.1.1.2.2.2 bouyer WalkState->ControlState->Common.Value = FALSE; 407 1.1.1.2.2.2 bouyer Status = AE_CTRL_END; 408 1.1.1.2.2.2 bouyer break; 409 1.1.1.2.2.2 bouyer 410 1.1.1.2.2.2 bouyer 411 1.1.1.2.2.2 bouyer case AE_CTRL_TRANSFER: 412 1.1.1.2.2.2 bouyer 413 1.1.1.2.2.2 bouyer /* A method call (invocation) -- transfer control */ 414 1.1.1.2.2.2 bouyer 415 1.1.1.2.2.2 bouyer Status = AE_CTRL_TRANSFER; 416 1.1.1.2.2.2 bouyer WalkState->PrevOp = Op; 417 1.1.1.2.2.2 bouyer WalkState->MethodCallOp = Op; 418 1.1.1.2.2.2 bouyer WalkState->MethodCallNode = (Op->Common.Value.Arg)->Common.Node; 419 1.1.1.2.2.2 bouyer 420 1.1.1.2.2.2 bouyer /* Will return value (if any) be used by the caller? */ 421 1.1.1.2.2.2 bouyer 422 1.1.1.2.2.2 bouyer WalkState->ReturnUsed = AcpiDsIsResultUsed (Op, WalkState); 423 1.1.1.2.2.2 bouyer break; 424 1.1.1.2.2.2 bouyer 425 1.1.1.2.2.2 bouyer 426 1.1.1.2.2.2 bouyer default: 427 1.1.1.2.2.2 bouyer 428 1.1.1.2.2.2 bouyer Status = CallbackStatus; 429 1.1.1.2.2.2 bouyer if ((CallbackStatus & AE_CODE_MASK) == AE_CODE_CONTROL) 430 1.1.1.2.2.2 bouyer { 431 1.1.1.2.2.2 bouyer Status = AE_OK; 432 1.1.1.2.2.2 bouyer } 433 1.1.1.2.2.2 bouyer break; 434 1.1.1.2.2.2 bouyer } 435 1.1.1.2.2.2 bouyer 436 1.1.1.2.2.2 bouyer return_ACPI_STATUS (Status); 437 1.1.1.2.2.2 bouyer } 438 1.1.1.2.2.2 bouyer 439 1.1.1.2.2.2 bouyer 440 1.1.1.2.2.2 bouyer /******************************************************************************* 441 1.1.1.2.2.2 bouyer * 442 1.1.1.2.2.2 bouyer * FUNCTION: AcpiPsParseAml 443 1.1.1.2.2.2 bouyer * 444 1.1.1.2.2.2 bouyer * PARAMETERS: WalkState - Current state 445 1.1.1.2.2.2 bouyer * 446 1.1.1.2.2.2 bouyer * 447 1.1.1.2.2.2 bouyer * RETURN: Status 448 1.1.1.2.2.2 bouyer * 449 1.1.1.2.2.2 bouyer * DESCRIPTION: Parse raw AML and return a tree of ops 450 1.1.1.2.2.2 bouyer * 451 1.1.1.2.2.2 bouyer ******************************************************************************/ 452 1.1.1.2.2.2 bouyer 453 1.1.1.2.2.2 bouyer ACPI_STATUS 454 1.1.1.2.2.2 bouyer AcpiPsParseAml ( 455 1.1.1.2.2.2 bouyer ACPI_WALK_STATE *WalkState) 456 1.1.1.2.2.2 bouyer { 457 1.1.1.2.2.2 bouyer ACPI_STATUS Status; 458 1.1.1.2.2.2 bouyer ACPI_THREAD_STATE *Thread; 459 1.1.1.2.2.2 bouyer ACPI_THREAD_STATE *PrevWalkList = AcpiGbl_CurrentWalkList; 460 1.1.1.2.2.2 bouyer ACPI_WALK_STATE *PreviousWalkState; 461 1.1.1.2.2.2 bouyer 462 1.1.1.2.2.2 bouyer 463 1.1.1.2.2.2 bouyer ACPI_FUNCTION_TRACE (PsParseAml); 464 1.1.1.2.2.2 bouyer 465 1.1.1.2.2.2 bouyer ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, 466 1.1.1.2.2.2 bouyer "Entered with WalkState=%p Aml=%p size=%X\n", 467 1.1.1.2.2.2 bouyer WalkState, WalkState->ParserState.Aml, 468 1.1.1.2.2.2 bouyer WalkState->ParserState.AmlSize)); 469 1.1.1.2.2.2 bouyer 470 1.1.1.2.2.2 bouyer if (!WalkState->ParserState.Aml) 471 1.1.1.2.2.2 bouyer { 472 1.1.1.2.2.2 bouyer return_ACPI_STATUS (AE_NULL_OBJECT); 473 1.1.1.2.2.2 bouyer } 474 1.1.1.2.2.2 bouyer 475 1.1.1.2.2.2 bouyer /* Create and initialize a new thread state */ 476 1.1.1.2.2.2 bouyer 477 1.1.1.2.2.2 bouyer Thread = AcpiUtCreateThreadState (); 478 1.1.1.2.2.2 bouyer if (!Thread) 479 1.1.1.2.2.2 bouyer { 480 1.1.1.2.2.2 bouyer if (WalkState->MethodDesc) 481 1.1.1.2.2.2 bouyer { 482 1.1.1.2.2.2 bouyer /* Executing a control method - additional cleanup */ 483 1.1.1.2.2.2 bouyer 484 1.1.1.2.2.2 bouyer AcpiDsTerminateControlMethod (WalkState->MethodDesc, WalkState); 485 1.1.1.2.2.2 bouyer } 486 1.1.1.2.2.2 bouyer 487 1.1.1.2.2.2 bouyer AcpiDsDeleteWalkState (WalkState); 488 1.1.1.2.2.2 bouyer return_ACPI_STATUS (AE_NO_MEMORY); 489 1.1.1.2.2.2 bouyer } 490 1.1.1.2.2.2 bouyer 491 1.1.1.2.2.2 bouyer WalkState->Thread = Thread; 492 1.1.1.2.2.2 bouyer 493 1.1.1.2.2.2 bouyer /* 494 1.1.1.2.2.2 bouyer * If executing a method, the starting SyncLevel is this method's 495 1.1.1.2.2.2 bouyer * SyncLevel 496 1.1.1.2.2.2 bouyer */ 497 1.1.1.2.2.2 bouyer if (WalkState->MethodDesc) 498 1.1.1.2.2.2 bouyer { 499 1.1.1.2.2.2 bouyer WalkState->Thread->CurrentSyncLevel = WalkState->MethodDesc->Method.SyncLevel; 500 1.1.1.2.2.2 bouyer } 501 1.1.1.2.2.2 bouyer 502 1.1.1.2.2.2 bouyer AcpiDsPushWalkState (WalkState, Thread); 503 1.1.1.2.2.2 bouyer 504 1.1.1.2.2.2 bouyer /* 505 1.1.1.2.2.2 bouyer * This global allows the AML debugger to get a handle to the currently 506 1.1.1.2.2.2 bouyer * executing control method. 507 1.1.1.2.2.2 bouyer */ 508 1.1.1.2.2.2 bouyer AcpiGbl_CurrentWalkList = Thread; 509 1.1.1.2.2.2 bouyer 510 1.1.1.2.2.2 bouyer /* 511 1.1.1.2.2.2 bouyer * Execute the walk loop as long as there is a valid Walk State. This 512 1.1.1.2.2.2 bouyer * handles nested control method invocations without recursion. 513 1.1.1.2.2.2 bouyer */ 514 1.1.1.2.2.2 bouyer ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "State=%p\n", WalkState)); 515 1.1.1.2.2.2 bouyer 516 1.1.1.2.2.2 bouyer Status = AE_OK; 517 1.1.1.2.2.2 bouyer while (WalkState) 518 1.1.1.2.2.2 bouyer { 519 1.1.1.2.2.2 bouyer if (ACPI_SUCCESS (Status)) 520 1.1.1.2.2.2 bouyer { 521 1.1.1.2.2.2 bouyer /* 522 1.1.1.2.2.2 bouyer * The ParseLoop executes AML until the method terminates 523 1.1.1.2.2.2 bouyer * or calls another method. 524 1.1.1.2.2.2 bouyer */ 525 1.1.1.2.2.2 bouyer Status = AcpiPsParseLoop (WalkState); 526 1.1.1.2.2.2 bouyer } 527 1.1.1.2.2.2 bouyer 528 1.1.1.2.2.2 bouyer ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, 529 1.1.1.2.2.2 bouyer "Completed one call to walk loop, %s State=%p\n", 530 1.1.1.2.2.2 bouyer AcpiFormatException (Status), WalkState)); 531 1.1.1.2.2.2 bouyer 532 1.1.1.2.2.2 bouyer if (Status == AE_CTRL_TRANSFER) 533 1.1.1.2.2.2 bouyer { 534 1.1.1.2.2.2 bouyer /* 535 1.1.1.2.2.2 bouyer * A method call was detected. 536 1.1.1.2.2.2 bouyer * Transfer control to the called control method 537 1.1.1.2.2.2 bouyer */ 538 1.1.1.2.2.2 bouyer Status = AcpiDsCallControlMethod (Thread, WalkState, NULL); 539 1.1.1.2.2.2 bouyer if (ACPI_FAILURE (Status)) 540 1.1.1.2.2.2 bouyer { 541 1.1.1.2.2.2 bouyer Status = AcpiDsMethodError (Status, WalkState); 542 1.1.1.2.2.2 bouyer } 543 1.1.1.2.2.2 bouyer 544 1.1.1.2.2.2 bouyer /* 545 1.1.1.2.2.2 bouyer * If the transfer to the new method method call worked, a new walk 546 1.1.1.2.2.2 bouyer * state was created -- get it 547 1.1.1.2.2.2 bouyer */ 548 1.1.1.2.2.2 bouyer WalkState = AcpiDsGetCurrentWalkState (Thread); 549 1.1.1.2.2.2 bouyer continue; 550 1.1.1.2.2.2 bouyer } 551 1.1.1.2.2.2 bouyer else if (Status == AE_CTRL_TERMINATE) 552 1.1.1.2.2.2 bouyer { 553 1.1.1.2.2.2 bouyer Status = AE_OK; 554 1.1.1.2.2.2 bouyer } 555 1.1.1.2.2.2 bouyer else if ((Status != AE_OK) && (WalkState->MethodDesc)) 556 1.1.1.2.2.2 bouyer { 557 1.1.1.2.2.2 bouyer /* Either the method parse or actual execution failed */ 558 1.1.1.2.2.2 bouyer 559 1.1.1.2.2.2 bouyer ACPI_ERROR_METHOD ("Method parse/execution failed", 560 1.1.1.2.2.2 bouyer WalkState->MethodNode, NULL, Status); 561 1.1.1.2.2.2 bouyer 562 1.1.1.2.2.2 bouyer /* Check for possible multi-thread reentrancy problem */ 563 1.1.1.2.2.2 bouyer 564 1.1.1.2.2.2 bouyer if ((Status == AE_ALREADY_EXISTS) && 565 1.1.1.2.2.2 bouyer (!(WalkState->MethodDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED))) 566 1.1.1.2.2.2 bouyer { 567 1.1.1.2.2.2 bouyer /* 568 1.1.1.2.2.2 bouyer * Method is not serialized and tried to create an object 569 1.1.1.2.2.2 bouyer * twice. The probable cause is that the method cannot 570 1.1.1.2.2.2 bouyer * handle reentrancy. Mark as "pending serialized" now, and 571 1.1.1.2.2.2 bouyer * then mark "serialized" when the last thread exits. 572 1.1.1.2.2.2 bouyer */ 573 1.1.1.2.2.2 bouyer WalkState->MethodDesc->Method.InfoFlags |= 574 1.1.1.2.2.2 bouyer ACPI_METHOD_SERIALIZED_PENDING; 575 1.1.1.2.2.2 bouyer } 576 1.1.1.2.2.2 bouyer } 577 1.1.1.2.2.2 bouyer 578 1.1.1.2.2.2 bouyer /* We are done with this walk, move on to the parent if any */ 579 1.1.1.2.2.2 bouyer 580 1.1.1.2.2.2 bouyer WalkState = AcpiDsPopWalkState (Thread); 581 1.1.1.2.2.2 bouyer 582 1.1.1.2.2.2 bouyer /* Reset the current scope to the beginning of scope stack */ 583 1.1.1.2.2.2 bouyer 584 1.1.1.2.2.2 bouyer AcpiDsScopeStackClear (WalkState); 585 1.1.1.2.2.2 bouyer 586 1.1.1.2.2.2 bouyer /* 587 1.1.1.2.2.2 bouyer * If we just returned from the execution of a control method or if we 588 1.1.1.2.2.2 bouyer * encountered an error during the method parse phase, there's lots of 589 1.1.1.2.2.2 bouyer * cleanup to do 590 1.1.1.2.2.2 bouyer */ 591 1.1.1.2.2.2 bouyer if (((WalkState->ParseFlags & ACPI_PARSE_MODE_MASK) == ACPI_PARSE_EXECUTE) || 592 1.1.1.2.2.2 bouyer (ACPI_FAILURE (Status))) 593 1.1.1.2.2.2 bouyer { 594 1.1.1.2.2.2 bouyer AcpiDsTerminateControlMethod (WalkState->MethodDesc, WalkState); 595 1.1.1.2.2.2 bouyer } 596 1.1.1.2.2.2 bouyer 597 1.1.1.2.2.2 bouyer /* Delete this walk state and all linked control states */ 598 1.1.1.2.2.2 bouyer 599 1.1.1.2.2.2 bouyer AcpiPsCleanupScope (&WalkState->ParserState); 600 1.1.1.2.2.2 bouyer PreviousWalkState = WalkState; 601 1.1.1.2.2.2 bouyer 602 1.1.1.2.2.2 bouyer ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, 603 1.1.1.2.2.2 bouyer "ReturnValue=%p, ImplicitValue=%p State=%p\n", 604 1.1.1.2.2.2 bouyer WalkState->ReturnDesc, WalkState->ImplicitReturnObj, WalkState)); 605 1.1.1.2.2.2 bouyer 606 1.1.1.2.2.2 bouyer /* Check if we have restarted a preempted walk */ 607 1.1.1.2.2.2 bouyer 608 1.1.1.2.2.2 bouyer WalkState = AcpiDsGetCurrentWalkState (Thread); 609 1.1.1.2.2.2 bouyer if (WalkState) 610 1.1.1.2.2.2 bouyer { 611 1.1.1.2.2.2 bouyer if (ACPI_SUCCESS (Status)) 612 1.1.1.2.2.2 bouyer { 613 1.1.1.2.2.2 bouyer /* 614 1.1.1.2.2.2 bouyer * There is another walk state, restart it. 615 1.1.1.2.2.2 bouyer * If the method return value is not used by the parent, 616 1.1.1.2.2.2 bouyer * The object is deleted 617 1.1.1.2.2.2 bouyer */ 618 1.1.1.2.2.2 bouyer if (!PreviousWalkState->ReturnDesc) 619 1.1.1.2.2.2 bouyer { 620 1.1.1.2.2.2 bouyer /* 621 1.1.1.2.2.2 bouyer * In slack mode execution, if there is no return value 622 1.1.1.2.2.2 bouyer * we should implicitly return zero (0) as a default value. 623 1.1.1.2.2.2 bouyer */ 624 1.1.1.2.2.2 bouyer if (AcpiGbl_EnableInterpreterSlack && 625 1.1.1.2.2.2 bouyer !PreviousWalkState->ImplicitReturnObj) 626 1.1.1.2.2.2 bouyer { 627 1.1.1.2.2.2 bouyer PreviousWalkState->ImplicitReturnObj = 628 1.1.1.2.2.2 bouyer AcpiUtCreateIntegerObject ((UINT64) 0); 629 1.1.1.2.2.2 bouyer if (!PreviousWalkState->ImplicitReturnObj) 630 1.1.1.2.2.2 bouyer { 631 1.1.1.2.2.2 bouyer return_ACPI_STATUS (AE_NO_MEMORY); 632 1.1.1.2.2.2 bouyer } 633 1.1.1.2.2.2 bouyer } 634 1.1.1.2.2.2 bouyer 635 1.1.1.2.2.2 bouyer /* Restart the calling control method */ 636 1.1.1.2.2.2 bouyer 637 1.1.1.2.2.2 bouyer Status = AcpiDsRestartControlMethod (WalkState, 638 1.1.1.2.2.2 bouyer PreviousWalkState->ImplicitReturnObj); 639 1.1.1.2.2.2 bouyer } 640 1.1.1.2.2.2 bouyer else 641 1.1.1.2.2.2 bouyer { 642 1.1.1.2.2.2 bouyer /* 643 1.1.1.2.2.2 bouyer * We have a valid return value, delete any implicit 644 1.1.1.2.2.2 bouyer * return value. 645 1.1.1.2.2.2 bouyer */ 646 1.1.1.2.2.2 bouyer AcpiDsClearImplicitReturn (PreviousWalkState); 647 1.1.1.2.2.2 bouyer 648 1.1.1.2.2.2 bouyer Status = AcpiDsRestartControlMethod (WalkState, 649 1.1.1.2.2.2 bouyer PreviousWalkState->ReturnDesc); 650 1.1.1.2.2.2 bouyer } 651 1.1.1.2.2.2 bouyer if (ACPI_SUCCESS (Status)) 652 1.1.1.2.2.2 bouyer { 653 1.1.1.2.2.2 bouyer WalkState->WalkType |= ACPI_WALK_METHOD_RESTART; 654 1.1.1.2.2.2 bouyer } 655 1.1.1.2.2.2 bouyer } 656 1.1.1.2.2.2 bouyer else 657 1.1.1.2.2.2 bouyer { 658 1.1.1.2.2.2 bouyer /* On error, delete any return object or implicit return */ 659 1.1.1.2.2.2 bouyer 660 1.1.1.2.2.2 bouyer AcpiUtRemoveReference (PreviousWalkState->ReturnDesc); 661 1.1.1.2.2.2 bouyer AcpiDsClearImplicitReturn (PreviousWalkState); 662 1.1.1.2.2.2 bouyer } 663 1.1.1.2.2.2 bouyer } 664 1.1.1.2.2.2 bouyer 665 1.1.1.2.2.2 bouyer /* 666 1.1.1.2.2.2 bouyer * Just completed a 1st-level method, save the final internal return 667 1.1.1.2.2.2 bouyer * value (if any) 668 1.1.1.2.2.2 bouyer */ 669 1.1.1.2.2.2 bouyer else if (PreviousWalkState->CallerReturnDesc) 670 1.1.1.2.2.2 bouyer { 671 1.1.1.2.2.2 bouyer if (PreviousWalkState->ImplicitReturnObj) 672 1.1.1.2.2.2 bouyer { 673 1.1.1.2.2.2 bouyer *(PreviousWalkState->CallerReturnDesc) = 674 1.1.1.2.2.2 bouyer PreviousWalkState->ImplicitReturnObj; 675 1.1.1.2.2.2 bouyer } 676 1.1.1.2.2.2 bouyer else 677 1.1.1.2.2.2 bouyer { 678 1.1.1.2.2.2 bouyer /* NULL if no return value */ 679 1.1.1.2.2.2 bouyer 680 1.1.1.2.2.2 bouyer *(PreviousWalkState->CallerReturnDesc) = 681 1.1.1.2.2.2 bouyer PreviousWalkState->ReturnDesc; 682 1.1.1.2.2.2 bouyer } 683 1.1.1.2.2.2 bouyer } 684 1.1.1.2.2.2 bouyer else 685 1.1.1.2.2.2 bouyer { 686 1.1.1.2.2.2 bouyer if (PreviousWalkState->ReturnDesc) 687 1.1.1.2.2.2 bouyer { 688 1.1.1.2.2.2 bouyer /* Caller doesn't want it, must delete it */ 689 1.1.1.2.2.2 bouyer 690 1.1.1.2.2.2 bouyer AcpiUtRemoveReference (PreviousWalkState->ReturnDesc); 691 1.1.1.2.2.2 bouyer } 692 1.1.1.2.2.2 bouyer if (PreviousWalkState->ImplicitReturnObj) 693 1.1.1.2.2.2 bouyer { 694 1.1.1.2.2.2 bouyer /* Caller doesn't want it, must delete it */ 695 1.1.1.2.2.2 bouyer 696 1.1.1.2.2.2 bouyer AcpiUtRemoveReference (PreviousWalkState->ImplicitReturnObj); 697 1.1.1.2.2.2 bouyer } 698 1.1.1.2.2.2 bouyer } 699 1.1.1.2.2.2 bouyer 700 1.1.1.2.2.2 bouyer AcpiDsDeleteWalkState (PreviousWalkState); 701 1.1.1.2.2.2 bouyer } 702 1.1.1.2.2.2 bouyer 703 1.1.1.2.2.2 bouyer /* Normal exit */ 704 1.1.1.2.2.2 bouyer 705 1.1.1.2.2.2 bouyer AcpiExReleaseAllMutexes (Thread); 706 1.1.1.2.2.2 bouyer AcpiUtDeleteGenericState (ACPI_CAST_PTR (ACPI_GENERIC_STATE, Thread)); 707 1.1.1.2.2.2 bouyer AcpiGbl_CurrentWalkList = PrevWalkList; 708 1.1.1.2.2.2 bouyer return_ACPI_STATUS (Status); 709 1.1.1.2.2.2 bouyer } 710 1.1.1.2.2.2 bouyer 711 1.1.1.2.2.2 bouyer 712
Indexes created Thu Oct 02 01:09:59 GMT 2025