dscontrol.c revision 1.2.2.2
1 1.2.2.2 bouyer /****************************************************************************** 2 1.2.2.2 bouyer * 3 1.2.2.2 bouyer * Module Name: dscontrol - Support for execution control opcodes - 4 1.2.2.2 bouyer * if/else/while/return 5 1.2.2.2 bouyer * 6 1.2.2.2 bouyer *****************************************************************************/ 7 1.2.2.2 bouyer 8 1.2.2.2 bouyer /* 9 1.2.2.2 bouyer * Copyright (C) 2000 - 2011, Intel Corp. 10 1.2.2.2 bouyer * All rights reserved. 11 1.2.2.2 bouyer * 12 1.2.2.2 bouyer * Redistribution and use in source and binary forms, with or without 13 1.2.2.2 bouyer * modification, are permitted provided that the following conditions 14 1.2.2.2 bouyer * are met: 15 1.2.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 16 1.2.2.2 bouyer * notice, this list of conditions, and the following disclaimer, 17 1.2.2.2 bouyer * without modification. 18 1.2.2.2 bouyer * 2. Redistributions in binary form must reproduce at minimum a disclaimer 19 1.2.2.2 bouyer * substantially similar to the "NO WARRANTY" disclaimer below 20 1.2.2.2 bouyer * ("Disclaimer") and any redistribution must be conditioned upon 21 1.2.2.2 bouyer * including a substantially similar Disclaimer requirement for further 22 1.2.2.2 bouyer * binary redistribution. 23 1.2.2.2 bouyer * 3. Neither the names of the above-listed copyright holders nor the names 24 1.2.2.2 bouyer * of any contributors may be used to endorse or promote products derived 25 1.2.2.2 bouyer * from this software without specific prior written permission. 26 1.2.2.2 bouyer * 27 1.2.2.2 bouyer * Alternatively, this software may be distributed under the terms of the 28 1.2.2.2 bouyer * GNU General Public License ("GPL") version 2 as published by the Free 29 1.2.2.2 bouyer * Software Foundation. 30 1.2.2.2 bouyer * 31 1.2.2.2 bouyer * NO WARRANTY 32 1.2.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 33 1.2.2.2 bouyer * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 34 1.2.2.2 bouyer * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 35 1.2.2.2 bouyer * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 36 1.2.2.2 bouyer * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 1.2.2.2 bouyer * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 1.2.2.2 bouyer * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 1.2.2.2 bouyer * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 40 1.2.2.2 bouyer * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 41 1.2.2.2 bouyer * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 42 1.2.2.2 bouyer * POSSIBILITY OF SUCH DAMAGES. 43 1.2.2.2 bouyer */ 44 1.2.2.2 bouyer 45 1.2.2.2 bouyer #define __DSCONTROL_C__ 46 1.2.2.2 bouyer 47 1.2.2.2 bouyer #include "acpi.h" 48 1.2.2.2 bouyer #include "accommon.h" 49 1.2.2.2 bouyer #include "amlcode.h" 50 1.2.2.2 bouyer #include "acdispat.h" 51 1.2.2.2 bouyer #include "acinterp.h" 52 1.2.2.2 bouyer 53 1.2.2.2 bouyer #define _COMPONENT ACPI_DISPATCHER 54 1.2.2.2 bouyer ACPI_MODULE_NAME ("dscontrol") 55 1.2.2.2 bouyer 56 1.2.2.2 bouyer 57 1.2.2.2 bouyer /******************************************************************************* 58 1.2.2.2 bouyer * 59 1.2.2.2 bouyer * FUNCTION: AcpiDsExecBeginControlOp 60 1.2.2.2 bouyer * 61 1.2.2.2 bouyer * PARAMETERS: WalkList - The list that owns the walk stack 62 1.2.2.2 bouyer * Op - The control Op 63 1.2.2.2 bouyer * 64 1.2.2.2 bouyer * RETURN: Status 65 1.2.2.2 bouyer * 66 1.2.2.2 bouyer * DESCRIPTION: Handles all control ops encountered during control method 67 1.2.2.2 bouyer * execution. 68 1.2.2.2 bouyer * 69 1.2.2.2 bouyer ******************************************************************************/ 70 1.2.2.2 bouyer 71 1.2.2.2 bouyer ACPI_STATUS 72 1.2.2.2 bouyer AcpiDsExecBeginControlOp ( 73 1.2.2.2 bouyer ACPI_WALK_STATE *WalkState, 74 1.2.2.2 bouyer ACPI_PARSE_OBJECT *Op) 75 1.2.2.2 bouyer { 76 1.2.2.2 bouyer ACPI_STATUS Status = AE_OK; 77 1.2.2.2 bouyer ACPI_GENERIC_STATE *ControlState; 78 1.2.2.2 bouyer 79 1.2.2.2 bouyer 80 1.2.2.2 bouyer ACPI_FUNCTION_NAME (DsExecBeginControlOp); 81 1.2.2.2 bouyer 82 1.2.2.2 bouyer 83 1.2.2.2 bouyer ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p Opcode=%2.2X State=%p\n", 84 1.2.2.2 bouyer Op, Op->Common.AmlOpcode, WalkState)); 85 1.2.2.2 bouyer 86 1.2.2.2 bouyer switch (Op->Common.AmlOpcode) 87 1.2.2.2 bouyer { 88 1.2.2.2 bouyer case AML_WHILE_OP: 89 1.2.2.2 bouyer 90 1.2.2.2 bouyer /* 91 1.2.2.2 bouyer * If this is an additional iteration of a while loop, continue. 92 1.2.2.2 bouyer * There is no need to allocate a new control state. 93 1.2.2.2 bouyer */ 94 1.2.2.2 bouyer if (WalkState->ControlState) 95 1.2.2.2 bouyer { 96 1.2.2.2 bouyer if (WalkState->ControlState->Control.AmlPredicateStart == 97 1.2.2.2 bouyer (WalkState->ParserState.Aml - 1)) 98 1.2.2.2 bouyer { 99 1.2.2.2 bouyer /* Reset the state to start-of-loop */ 100 1.2.2.2 bouyer 101 1.2.2.2 bouyer WalkState->ControlState->Common.State = 102 1.2.2.2 bouyer ACPI_CONTROL_CONDITIONAL_EXECUTING; 103 1.2.2.2 bouyer break; 104 1.2.2.2 bouyer } 105 1.2.2.2 bouyer } 106 1.2.2.2 bouyer 107 1.2.2.2 bouyer /*lint -fallthrough */ 108 1.2.2.2 bouyer 109 1.2.2.2 bouyer case AML_IF_OP: 110 1.2.2.2 bouyer 111 1.2.2.2 bouyer /* 112 1.2.2.2 bouyer * IF/WHILE: Create a new control state to manage these 113 1.2.2.2 bouyer * constructs. We need to manage these as a stack, in order 114 1.2.2.2 bouyer * to handle nesting. 115 1.2.2.2 bouyer */ 116 1.2.2.2 bouyer ControlState = AcpiUtCreateControlState (); 117 1.2.2.2 bouyer if (!ControlState) 118 1.2.2.2 bouyer { 119 1.2.2.2 bouyer Status = AE_NO_MEMORY; 120 1.2.2.2 bouyer break; 121 1.2.2.2 bouyer } 122 1.2.2.2 bouyer /* 123 1.2.2.2 bouyer * Save a pointer to the predicate for multiple executions 124 1.2.2.2 bouyer * of a loop 125 1.2.2.2 bouyer */ 126 1.2.2.2 bouyer ControlState->Control.AmlPredicateStart = WalkState->ParserState.Aml - 1; 127 1.2.2.2 bouyer ControlState->Control.PackageEnd = WalkState->ParserState.PkgEnd; 128 1.2.2.2 bouyer ControlState->Control.Opcode = Op->Common.AmlOpcode; 129 1.2.2.2 bouyer 130 1.2.2.2 bouyer 131 1.2.2.2 bouyer /* Push the control state on this walk's control stack */ 132 1.2.2.2 bouyer 133 1.2.2.2 bouyer AcpiUtPushGenericState (&WalkState->ControlState, ControlState); 134 1.2.2.2 bouyer break; 135 1.2.2.2 bouyer 136 1.2.2.2 bouyer case AML_ELSE_OP: 137 1.2.2.2 bouyer 138 1.2.2.2 bouyer /* Predicate is in the state object */ 139 1.2.2.2 bouyer /* If predicate is true, the IF was executed, ignore ELSE part */ 140 1.2.2.2 bouyer 141 1.2.2.2 bouyer if (WalkState->LastPredicate) 142 1.2.2.2 bouyer { 143 1.2.2.2 bouyer Status = AE_CTRL_TRUE; 144 1.2.2.2 bouyer } 145 1.2.2.2 bouyer 146 1.2.2.2 bouyer break; 147 1.2.2.2 bouyer 148 1.2.2.2 bouyer case AML_RETURN_OP: 149 1.2.2.2 bouyer 150 1.2.2.2 bouyer break; 151 1.2.2.2 bouyer 152 1.2.2.2 bouyer default: 153 1.2.2.2 bouyer break; 154 1.2.2.2 bouyer } 155 1.2.2.2 bouyer 156 1.2.2.2 bouyer return (Status); 157 1.2.2.2 bouyer } 158 1.2.2.2 bouyer 159 1.2.2.2 bouyer 160 1.2.2.2 bouyer /******************************************************************************* 161 1.2.2.2 bouyer * 162 1.2.2.2 bouyer * FUNCTION: AcpiDsExecEndControlOp 163 1.2.2.2 bouyer * 164 1.2.2.2 bouyer * PARAMETERS: WalkList - The list that owns the walk stack 165 1.2.2.2 bouyer * Op - The control Op 166 1.2.2.2 bouyer * 167 1.2.2.2 bouyer * RETURN: Status 168 1.2.2.2 bouyer * 169 1.2.2.2 bouyer * DESCRIPTION: Handles all control ops encountered during control method 170 1.2.2.2 bouyer * execution. 171 1.2.2.2 bouyer * 172 1.2.2.2 bouyer ******************************************************************************/ 173 1.2.2.2 bouyer 174 1.2.2.2 bouyer ACPI_STATUS 175 1.2.2.2 bouyer AcpiDsExecEndControlOp ( 176 1.2.2.2 bouyer ACPI_WALK_STATE *WalkState, 177 1.2.2.2 bouyer ACPI_PARSE_OBJECT *Op) 178 1.2.2.2 bouyer { 179 1.2.2.2 bouyer ACPI_STATUS Status = AE_OK; 180 1.2.2.2 bouyer ACPI_GENERIC_STATE *ControlState; 181 1.2.2.2 bouyer 182 1.2.2.2 bouyer 183 1.2.2.2 bouyer ACPI_FUNCTION_NAME (DsExecEndControlOp); 184 1.2.2.2 bouyer 185 1.2.2.2 bouyer 186 1.2.2.2 bouyer switch (Op->Common.AmlOpcode) 187 1.2.2.2 bouyer { 188 1.2.2.2 bouyer case AML_IF_OP: 189 1.2.2.2 bouyer 190 1.2.2.2 bouyer ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[IF_OP] Op=%p\n", Op)); 191 1.2.2.2 bouyer 192 1.2.2.2 bouyer /* 193 1.2.2.2 bouyer * Save the result of the predicate in case there is an 194 1.2.2.2 bouyer * ELSE to come 195 1.2.2.2 bouyer */ 196 1.2.2.2 bouyer WalkState->LastPredicate = 197 1.2.2.2 bouyer (BOOLEAN) WalkState->ControlState->Common.Value; 198 1.2.2.2 bouyer 199 1.2.2.2 bouyer /* 200 1.2.2.2 bouyer * Pop the control state that was created at the start 201 1.2.2.2 bouyer * of the IF and free it 202 1.2.2.2 bouyer */ 203 1.2.2.2 bouyer ControlState = AcpiUtPopGenericState (&WalkState->ControlState); 204 1.2.2.2 bouyer AcpiUtDeleteGenericState (ControlState); 205 1.2.2.2 bouyer break; 206 1.2.2.2 bouyer 207 1.2.2.2 bouyer 208 1.2.2.2 bouyer case AML_ELSE_OP: 209 1.2.2.2 bouyer 210 1.2.2.2 bouyer break; 211 1.2.2.2 bouyer 212 1.2.2.2 bouyer 213 1.2.2.2 bouyer case AML_WHILE_OP: 214 1.2.2.2 bouyer 215 1.2.2.2 bouyer ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[WHILE_OP] Op=%p\n", Op)); 216 1.2.2.2 bouyer 217 1.2.2.2 bouyer ControlState = WalkState->ControlState; 218 1.2.2.2 bouyer if (ControlState->Common.Value) 219 1.2.2.2 bouyer { 220 1.2.2.2 bouyer /* Predicate was true, the body of the loop was just executed */ 221 1.2.2.2 bouyer 222 1.2.2.2 bouyer /* 223 1.2.2.2 bouyer * This loop counter mechanism allows the interpreter to escape 224 1.2.2.2 bouyer * possibly infinite loops. This can occur in poorly written AML 225 1.2.2.2 bouyer * when the hardware does not respond within a while loop and the 226 1.2.2.2 bouyer * loop does not implement a timeout. 227 1.2.2.2 bouyer */ 228 1.2.2.2 bouyer ControlState->Control.LoopCount++; 229 1.2.2.2 bouyer if (ControlState->Control.LoopCount > ACPI_MAX_LOOP_ITERATIONS) 230 1.2.2.2 bouyer { 231 1.2.2.2 bouyer Status = AE_AML_INFINITE_LOOP; 232 1.2.2.2 bouyer break; 233 1.2.2.2 bouyer } 234 1.2.2.2 bouyer 235 1.2.2.2 bouyer /* 236 1.2.2.2 bouyer * Go back and evaluate the predicate and maybe execute the loop 237 1.2.2.2 bouyer * another time 238 1.2.2.2 bouyer */ 239 1.2.2.2 bouyer Status = AE_CTRL_PENDING; 240 1.2.2.2 bouyer WalkState->AmlLastWhile = ControlState->Control.AmlPredicateStart; 241 1.2.2.2 bouyer break; 242 1.2.2.2 bouyer } 243 1.2.2.2 bouyer 244 1.2.2.2 bouyer /* Predicate was false, terminate this while loop */ 245 1.2.2.2 bouyer 246 1.2.2.2 bouyer ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 247 1.2.2.2 bouyer "[WHILE_OP] termination! Op=%p\n",Op)); 248 1.2.2.2 bouyer 249 1.2.2.2 bouyer /* Pop this control state and free it */ 250 1.2.2.2 bouyer 251 1.2.2.2 bouyer ControlState = AcpiUtPopGenericState (&WalkState->ControlState); 252 1.2.2.2 bouyer AcpiUtDeleteGenericState (ControlState); 253 1.2.2.2 bouyer break; 254 1.2.2.2 bouyer 255 1.2.2.2 bouyer 256 1.2.2.2 bouyer case AML_RETURN_OP: 257 1.2.2.2 bouyer 258 1.2.2.2 bouyer ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 259 1.2.2.2 bouyer "[RETURN_OP] Op=%p Arg=%p\n",Op, Op->Common.Value.Arg)); 260 1.2.2.2 bouyer 261 1.2.2.2 bouyer /* 262 1.2.2.2 bouyer * One optional operand -- the return value 263 1.2.2.2 bouyer * It can be either an immediate operand or a result that 264 1.2.2.2 bouyer * has been bubbled up the tree 265 1.2.2.2 bouyer */ 266 1.2.2.2 bouyer if (Op->Common.Value.Arg) 267 1.2.2.2 bouyer { 268 1.2.2.2 bouyer /* Since we have a real Return(), delete any implicit return */ 269 1.2.2.2 bouyer 270 1.2.2.2 bouyer AcpiDsClearImplicitReturn (WalkState); 271 1.2.2.2 bouyer 272 1.2.2.2 bouyer /* Return statement has an immediate operand */ 273 1.2.2.2 bouyer 274 1.2.2.2 bouyer Status = AcpiDsCreateOperands (WalkState, Op->Common.Value.Arg); 275 1.2.2.2 bouyer if (ACPI_FAILURE (Status)) 276 1.2.2.2 bouyer { 277 1.2.2.2 bouyer return (Status); 278 1.2.2.2 bouyer } 279 1.2.2.2 bouyer 280 1.2.2.2 bouyer /* 281 1.2.2.2 bouyer * If value being returned is a Reference (such as 282 1.2.2.2 bouyer * an arg or local), resolve it now because it may 283 1.2.2.2 bouyer * cease to exist at the end of the method. 284 1.2.2.2 bouyer */ 285 1.2.2.2 bouyer Status = AcpiExResolveToValue (&WalkState->Operands [0], WalkState); 286 1.2.2.2 bouyer if (ACPI_FAILURE (Status)) 287 1.2.2.2 bouyer { 288 1.2.2.2 bouyer return (Status); 289 1.2.2.2 bouyer } 290 1.2.2.2 bouyer 291 1.2.2.2 bouyer /* 292 1.2.2.2 bouyer * Get the return value and save as the last result 293 1.2.2.2 bouyer * value. This is the only place where WalkState->ReturnDesc 294 1.2.2.2 bouyer * is set to anything other than zero! 295 1.2.2.2 bouyer */ 296 1.2.2.2 bouyer WalkState->ReturnDesc = WalkState->Operands[0]; 297 1.2.2.2 bouyer } 298 1.2.2.2 bouyer else if (WalkState->ResultCount) 299 1.2.2.2 bouyer { 300 1.2.2.2 bouyer /* Since we have a real Return(), delete any implicit return */ 301 1.2.2.2 bouyer 302 1.2.2.2 bouyer AcpiDsClearImplicitReturn (WalkState); 303 1.2.2.2 bouyer 304 1.2.2.2 bouyer /* 305 1.2.2.2 bouyer * The return value has come from a previous calculation. 306 1.2.2.2 bouyer * 307 1.2.2.2 bouyer * If value being returned is a Reference (such as 308 1.2.2.2 bouyer * an arg or local), resolve it now because it may 309 1.2.2.2 bouyer * cease to exist at the end of the method. 310 1.2.2.2 bouyer * 311 1.2.2.2 bouyer * Allow references created by the Index operator to return 312 1.2.2.2 bouyer * unchanged. 313 1.2.2.2 bouyer */ 314 1.2.2.2 bouyer if ((ACPI_GET_DESCRIPTOR_TYPE (WalkState->Results->Results.ObjDesc[0]) == ACPI_DESC_TYPE_OPERAND) && 315 1.2.2.2 bouyer ((WalkState->Results->Results.ObjDesc [0])->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) && 316 1.2.2.2 bouyer ((WalkState->Results->Results.ObjDesc [0])->Reference.Class != ACPI_REFCLASS_INDEX)) 317 1.2.2.2 bouyer { 318 1.2.2.2 bouyer Status = AcpiExResolveToValue (&WalkState->Results->Results.ObjDesc [0], WalkState); 319 1.2.2.2 bouyer if (ACPI_FAILURE (Status)) 320 1.2.2.2 bouyer { 321 1.2.2.2 bouyer return (Status); 322 1.2.2.2 bouyer } 323 1.2.2.2 bouyer } 324 1.2.2.2 bouyer 325 1.2.2.2 bouyer WalkState->ReturnDesc = WalkState->Results->Results.ObjDesc [0]; 326 1.2.2.2 bouyer } 327 1.2.2.2 bouyer else 328 1.2.2.2 bouyer { 329 1.2.2.2 bouyer /* No return operand */ 330 1.2.2.2 bouyer 331 1.2.2.2 bouyer if (WalkState->NumOperands) 332 1.2.2.2 bouyer { 333 1.2.2.2 bouyer AcpiUtRemoveReference (WalkState->Operands [0]); 334 1.2.2.2 bouyer } 335 1.2.2.2 bouyer 336 1.2.2.2 bouyer WalkState->Operands [0] = NULL; 337 1.2.2.2 bouyer WalkState->NumOperands = 0; 338 1.2.2.2 bouyer WalkState->ReturnDesc = NULL; 339 1.2.2.2 bouyer } 340 1.2.2.2 bouyer 341 1.2.2.2 bouyer 342 1.2.2.2 bouyer ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 343 1.2.2.2 bouyer "Completed RETURN_OP State=%p, RetVal=%p\n", 344 1.2.2.2 bouyer WalkState, WalkState->ReturnDesc)); 345 1.2.2.2 bouyer 346 1.2.2.2 bouyer /* End the control method execution right now */ 347 1.2.2.2 bouyer 348 1.2.2.2 bouyer Status = AE_CTRL_TERMINATE; 349 1.2.2.2 bouyer break; 350 1.2.2.2 bouyer 351 1.2.2.2 bouyer 352 1.2.2.2 bouyer case AML_NOOP_OP: 353 1.2.2.2 bouyer 354 1.2.2.2 bouyer /* Just do nothing! */ 355 1.2.2.2 bouyer break; 356 1.2.2.2 bouyer 357 1.2.2.2 bouyer 358 1.2.2.2 bouyer case AML_BREAK_POINT_OP: 359 1.2.2.2 bouyer 360 1.2.2.2 bouyer /* 361 1.2.2.2 bouyer * Set the single-step flag. This will cause the debugger (if present) 362 1.2.2.2 bouyer * to break to the console within the AML debugger at the start of the 363 1.2.2.2 bouyer * next AML instruction. 364 1.2.2.2 bouyer */ 365 1.2.2.2 bouyer ACPI_DEBUGGER_EXEC ( 366 1.2.2.2 bouyer AcpiGbl_CmSingleStep = TRUE); 367 1.2.2.2 bouyer ACPI_DEBUGGER_EXEC ( 368 1.2.2.2 bouyer AcpiOsPrintf ("**break** Executed AML BreakPoint opcode\n")); 369 1.2.2.2 bouyer 370 1.2.2.2 bouyer /* Call to the OSL in case OS wants a piece of the action */ 371 1.2.2.2 bouyer 372 1.2.2.2 bouyer Status = AcpiOsSignal (ACPI_SIGNAL_BREAKPOINT, 373 1.2.2.2 bouyer "Executed AML Breakpoint opcode"); 374 1.2.2.2 bouyer break; 375 1.2.2.2 bouyer 376 1.2.2.2 bouyer 377 1.2.2.2 bouyer case AML_BREAK_OP: 378 1.2.2.2 bouyer case AML_CONTINUE_OP: /* ACPI 2.0 */ 379 1.2.2.2 bouyer 380 1.2.2.2 bouyer 381 1.2.2.2 bouyer /* Pop and delete control states until we find a while */ 382 1.2.2.2 bouyer 383 1.2.2.2 bouyer while (WalkState->ControlState && 384 1.2.2.2 bouyer (WalkState->ControlState->Control.Opcode != AML_WHILE_OP)) 385 1.2.2.2 bouyer { 386 1.2.2.2 bouyer ControlState = AcpiUtPopGenericState (&WalkState->ControlState); 387 1.2.2.2 bouyer AcpiUtDeleteGenericState (ControlState); 388 1.2.2.2 bouyer } 389 1.2.2.2 bouyer 390 1.2.2.2 bouyer /* No while found? */ 391 1.2.2.2 bouyer 392 1.2.2.2 bouyer if (!WalkState->ControlState) 393 1.2.2.2 bouyer { 394 1.2.2.2 bouyer return (AE_AML_NO_WHILE); 395 1.2.2.2 bouyer } 396 1.2.2.2 bouyer 397 1.2.2.2 bouyer /* Was: WalkState->AmlLastWhile = WalkState->ControlState->Control.AmlPredicateStart; */ 398 1.2.2.2 bouyer 399 1.2.2.2 bouyer WalkState->AmlLastWhile = WalkState->ControlState->Control.PackageEnd; 400 1.2.2.2 bouyer 401 1.2.2.2 bouyer /* Return status depending on opcode */ 402 1.2.2.2 bouyer 403 1.2.2.2 bouyer if (Op->Common.AmlOpcode == AML_BREAK_OP) 404 1.2.2.2 bouyer { 405 1.2.2.2 bouyer Status = AE_CTRL_BREAK; 406 1.2.2.2 bouyer } 407 1.2.2.2 bouyer else 408 1.2.2.2 bouyer { 409 1.2.2.2 bouyer Status = AE_CTRL_CONTINUE; 410 1.2.2.2 bouyer } 411 1.2.2.2 bouyer break; 412 1.2.2.2 bouyer 413 1.2.2.2 bouyer 414 1.2.2.2 bouyer default: 415 1.2.2.2 bouyer 416 1.2.2.2 bouyer ACPI_ERROR ((AE_INFO, "Unknown control opcode=0x%X Op=%p", 417 1.2.2.2 bouyer Op->Common.AmlOpcode, Op)); 418 1.2.2.2 bouyer 419 1.2.2.2 bouyer Status = AE_AML_BAD_OPCODE; 420 1.2.2.2 bouyer break; 421 1.2.2.2 bouyer } 422 1.2.2.2 bouyer 423 1.2.2.2 bouyer return (Status); 424 1.2.2.2 bouyer } 425
Indexes created Thu Oct 02 14:10:14 GMT 2025