| 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Module Name: exresop - AML Interpreter operand/object resolution |
| 4 | * |
| 5 | *****************************************************************************/ |
| 6 | |
| 7 | /* |
| 8 | * Copyright (C) 2000 - 2016, Intel Corp. |
| 9 | * All rights reserved. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions, and the following disclaimer, |
| 16 | * without modification. |
| 17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| 18 | * substantially similar to the "NO WARRANTY" disclaimer below |
| 19 | * ("Disclaimer") and any redistribution must be conditioned upon |
| 20 | * including a substantially similar Disclaimer requirement for further |
| 21 | * binary redistribution. |
| 22 | * 3. Neither the names of the above-listed copyright holders nor the names |
| 23 | * of any contributors may be used to endorse or promote products derived |
| 24 | * from this software without specific prior written permission. |
| 25 | * |
| 26 | * Alternatively, this software may be distributed under the terms of the |
| 27 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 28 | * Software Foundation. |
| 29 | * |
| 30 | * NO WARRANTY |
| 31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| 34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| 40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 41 | * POSSIBILITY OF SUCH DAMAGES. |
| 42 | */ |
| 43 | |
| 44 | #include "acpi.h" |
| 45 | #include "accommon.h" |
| 46 | #include "amlcode.h" |
| 47 | #include "acparser.h" |
| 48 | #include "acinterp.h" |
| 49 | #include "acnamesp.h" |
| 50 | |
| 51 | |
| 52 | #define _COMPONENT ACPI_EXECUTER |
| 53 | ACPI_MODULE_NAME ("exresop" ) |
| 54 | |
| 55 | /* Local prototypes */ |
| 56 | |
| 57 | static ACPI_STATUS |
| 58 | AcpiExCheckObjectType ( |
| 59 | ACPI_OBJECT_TYPE TypeNeeded, |
| 60 | ACPI_OBJECT_TYPE ThisType, |
| 61 | void *Object); |
| 62 | |
| 63 | |
| 64 | /******************************************************************************* |
| 65 | * |
| 66 | * FUNCTION: AcpiExCheckObjectType |
| 67 | * |
| 68 | * PARAMETERS: TypeNeeded Object type needed |
| 69 | * ThisType Actual object type |
| 70 | * Object Object pointer |
| 71 | * |
| 72 | * RETURN: Status |
| 73 | * |
| 74 | * DESCRIPTION: Check required type against actual type |
| 75 | * |
| 76 | ******************************************************************************/ |
| 77 | |
| 78 | static ACPI_STATUS |
| 79 | AcpiExCheckObjectType ( |
| 80 | ACPI_OBJECT_TYPE TypeNeeded, |
| 81 | ACPI_OBJECT_TYPE ThisType, |
| 82 | void *Object) |
| 83 | { |
| 84 | ACPI_FUNCTION_ENTRY (); |
| 85 | |
| 86 | |
| 87 | if (TypeNeeded == ACPI_TYPE_ANY) |
| 88 | { |
| 89 | /* All types OK, so we don't perform any typechecks */ |
| 90 | |
| 91 | return (AE_OK); |
| 92 | } |
| 93 | |
| 94 | if (TypeNeeded == ACPI_TYPE_LOCAL_REFERENCE) |
| 95 | { |
| 96 | /* |
| 97 | * Allow the AML "Constant" opcodes (Zero, One, etc.) to be reference |
| 98 | * objects and thus allow them to be targets. (As per the ACPI |
| 99 | * specification, a store to a constant is a noop.) |
| 100 | */ |
| 101 | if ((ThisType == ACPI_TYPE_INTEGER) && |
| 102 | (((ACPI_OPERAND_OBJECT *) Object)->Common.Flags & |
| 103 | AOPOBJ_AML_CONSTANT)) |
| 104 | { |
| 105 | return (AE_OK); |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | if (TypeNeeded != ThisType) |
| 110 | { |
| 111 | ACPI_ERROR ((AE_INFO, |
| 112 | "Needed type [%s], found [%s] %p" , |
| 113 | AcpiUtGetTypeName (TypeNeeded), |
| 114 | AcpiUtGetTypeName (ThisType), Object)); |
| 115 | |
| 116 | return (AE_AML_OPERAND_TYPE); |
| 117 | } |
| 118 | |
| 119 | return (AE_OK); |
| 120 | } |
| 121 | |
| 122 | |
| 123 | /******************************************************************************* |
| 124 | * |
| 125 | * FUNCTION: AcpiExResolveOperands |
| 126 | * |
| 127 | * PARAMETERS: Opcode - Opcode being interpreted |
| 128 | * StackPtr - Pointer to the operand stack to be |
| 129 | * resolved |
| 130 | * WalkState - Current state |
| 131 | * |
| 132 | * RETURN: Status |
| 133 | * |
| 134 | * DESCRIPTION: Convert multiple input operands to the types required by the |
| 135 | * target operator. |
| 136 | * |
| 137 | * Each 5-bit group in ArgTypes represents one required |
| 138 | * operand and indicates the required Type. The corresponding operand |
| 139 | * will be converted to the required type if possible, otherwise we |
| 140 | * abort with an exception. |
| 141 | * |
| 142 | ******************************************************************************/ |
| 143 | |
| 144 | ACPI_STATUS |
| 145 | AcpiExResolveOperands ( |
| 146 | UINT16 Opcode, |
| 147 | ACPI_OPERAND_OBJECT **StackPtr, |
| 148 | ACPI_WALK_STATE *WalkState) |
| 149 | { |
| 150 | ACPI_OPERAND_OBJECT *ObjDesc; |
| 151 | ACPI_STATUS Status = AE_OK; |
| 152 | UINT8 ObjectType; |
| 153 | UINT32 ArgTypes; |
| 154 | const ACPI_OPCODE_INFO *OpInfo; |
| 155 | UINT32 ThisArgType; |
| 156 | ACPI_OBJECT_TYPE TypeNeeded; |
| 157 | UINT16 TargetOp = 0; |
| 158 | |
| 159 | |
| 160 | ACPI_FUNCTION_TRACE_U32 (ExResolveOperands, Opcode); |
| 161 | |
| 162 | |
| 163 | OpInfo = AcpiPsGetOpcodeInfo (Opcode); |
| 164 | if (OpInfo->Class == AML_CLASS_UNKNOWN) |
| 165 | { |
| 166 | return_ACPI_STATUS (AE_AML_BAD_OPCODE); |
| 167 | } |
| 168 | |
| 169 | ArgTypes = OpInfo->RuntimeArgs; |
| 170 | if (ArgTypes == ARGI_INVALID_OPCODE) |
| 171 | { |
| 172 | ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X" , |
| 173 | Opcode)); |
| 174 | |
| 175 | return_ACPI_STATUS (AE_AML_INTERNAL); |
| 176 | } |
| 177 | |
| 178 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, |
| 179 | "Opcode %X [%s] RequiredOperandTypes=%8.8X\n" , |
| 180 | Opcode, OpInfo->Name, ArgTypes)); |
| 181 | |
| 182 | /* |
| 183 | * Normal exit is with (ArgTypes == 0) at end of argument list. |
| 184 | * Function will return an exception from within the loop upon |
| 185 | * finding an entry which is not (or cannot be converted |
| 186 | * to) the required type; if stack underflows; or upon |
| 187 | * finding a NULL stack entry (which should not happen). |
| 188 | */ |
| 189 | while (GET_CURRENT_ARG_TYPE (ArgTypes)) |
| 190 | { |
| 191 | if (!StackPtr || !*StackPtr) |
| 192 | { |
| 193 | ACPI_ERROR ((AE_INFO, "Null stack entry at %p" , |
| 194 | StackPtr)); |
| 195 | |
| 196 | return_ACPI_STATUS (AE_AML_INTERNAL); |
| 197 | } |
| 198 | |
| 199 | /* Extract useful items */ |
| 200 | |
| 201 | ObjDesc = *StackPtr; |
| 202 | |
| 203 | /* Decode the descriptor type */ |
| 204 | |
| 205 | switch (ACPI_GET_DESCRIPTOR_TYPE (ObjDesc)) |
| 206 | { |
| 207 | case ACPI_DESC_TYPE_NAMED: |
| 208 | |
| 209 | /* Namespace Node */ |
| 210 | |
| 211 | ObjectType = ((ACPI_NAMESPACE_NODE *) ObjDesc)->Type; |
| 212 | |
| 213 | /* |
| 214 | * Resolve an alias object. The construction of these objects |
| 215 | * guarantees that there is only one level of alias indirection; |
| 216 | * thus, the attached object is always the aliased namespace node |
| 217 | */ |
| 218 | if (ObjectType == ACPI_TYPE_LOCAL_ALIAS) |
| 219 | { |
| 220 | ObjDesc = AcpiNsGetAttachedObject ( |
| 221 | (ACPI_NAMESPACE_NODE *) ObjDesc); |
| 222 | *StackPtr = ObjDesc; |
| 223 | ObjectType = ((ACPI_NAMESPACE_NODE *) ObjDesc)->Type; |
| 224 | } |
| 225 | break; |
| 226 | |
| 227 | case ACPI_DESC_TYPE_OPERAND: |
| 228 | |
| 229 | /* ACPI internal object */ |
| 230 | |
| 231 | ObjectType = ObjDesc->Common.Type; |
| 232 | |
| 233 | /* Check for bad ACPI_OBJECT_TYPE */ |
| 234 | |
| 235 | if (!AcpiUtValidObjectType (ObjectType)) |
| 236 | { |
| 237 | ACPI_ERROR ((AE_INFO, |
| 238 | "Bad operand object type [0x%X]" , ObjectType)); |
| 239 | |
| 240 | return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| 241 | } |
| 242 | |
| 243 | if (ObjectType == (UINT8) ACPI_TYPE_LOCAL_REFERENCE) |
| 244 | { |
| 245 | /* Validate the Reference */ |
| 246 | |
| 247 | switch (ObjDesc->Reference.Class) |
| 248 | { |
| 249 | case ACPI_REFCLASS_DEBUG: |
| 250 | |
| 251 | TargetOp = AML_DEBUG_OP; |
| 252 | |
| 253 | /*lint -fallthrough */ |
| 254 | |
| 255 | case ACPI_REFCLASS_ARG: |
| 256 | case ACPI_REFCLASS_LOCAL: |
| 257 | case ACPI_REFCLASS_INDEX: |
| 258 | case ACPI_REFCLASS_REFOF: |
| 259 | case ACPI_REFCLASS_TABLE: /* DdbHandle from LOAD_OP or LOAD_TABLE_OP */ |
| 260 | case ACPI_REFCLASS_NAME: /* Reference to a named object */ |
| 261 | |
| 262 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, |
| 263 | "Operand is a Reference, Class [%s] %2.2X\n" , |
| 264 | AcpiUtGetReferenceName (ObjDesc), |
| 265 | ObjDesc->Reference.Class)); |
| 266 | break; |
| 267 | |
| 268 | default: |
| 269 | |
| 270 | ACPI_ERROR ((AE_INFO, |
| 271 | "Unknown Reference Class 0x%2.2X in %p" , |
| 272 | ObjDesc->Reference.Class, ObjDesc)); |
| 273 | |
| 274 | return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| 275 | } |
| 276 | } |
| 277 | break; |
| 278 | |
| 279 | default: |
| 280 | |
| 281 | /* Invalid descriptor */ |
| 282 | |
| 283 | ACPI_ERROR ((AE_INFO, "Invalid descriptor %p [%s]" , |
| 284 | ObjDesc, AcpiUtGetDescriptorName (ObjDesc))); |
| 285 | |
| 286 | return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| 287 | } |
| 288 | |
| 289 | /* Get one argument type, point to the next */ |
| 290 | |
| 291 | ThisArgType = GET_CURRENT_ARG_TYPE (ArgTypes); |
| 292 | INCREMENT_ARG_LIST (ArgTypes); |
| 293 | |
| 294 | /* |
| 295 | * Handle cases where the object does not need to be |
| 296 | * resolved to a value |
| 297 | */ |
| 298 | switch (ThisArgType) |
| 299 | { |
| 300 | case ARGI_REF_OR_STRING: /* Can be a String or Reference */ |
| 301 | |
| 302 | if ((ACPI_GET_DESCRIPTOR_TYPE (ObjDesc) == |
| 303 | ACPI_DESC_TYPE_OPERAND) && |
| 304 | (ObjDesc->Common.Type == ACPI_TYPE_STRING)) |
| 305 | { |
| 306 | /* |
| 307 | * String found - the string references a named object and |
| 308 | * must be resolved to a node |
| 309 | */ |
| 310 | goto NextOperand; |
| 311 | } |
| 312 | |
| 313 | /* |
| 314 | * Else not a string - fall through to the normal Reference |
| 315 | * case below |
| 316 | */ |
| 317 | /*lint -fallthrough */ |
| 318 | |
| 319 | case ARGI_REFERENCE: /* References: */ |
| 320 | case ARGI_INTEGER_REF: |
| 321 | case ARGI_OBJECT_REF: |
| 322 | case ARGI_DEVICE_REF: |
| 323 | case ARGI_TARGETREF: /* Allows implicit conversion rules before store */ |
| 324 | case ARGI_FIXED_TARGET: /* No implicit conversion before store to target */ |
| 325 | case ARGI_SIMPLE_TARGET: /* Name, Local, or Arg - no implicit conversion */ |
| 326 | case ARGI_STORE_TARGET: |
| 327 | |
| 328 | /* |
| 329 | * Need an operand of type ACPI_TYPE_LOCAL_REFERENCE |
| 330 | * A Namespace Node is OK as-is |
| 331 | */ |
| 332 | if (ACPI_GET_DESCRIPTOR_TYPE (ObjDesc) == ACPI_DESC_TYPE_NAMED) |
| 333 | { |
| 334 | goto NextOperand; |
| 335 | } |
| 336 | |
| 337 | Status = AcpiExCheckObjectType ( |
| 338 | ACPI_TYPE_LOCAL_REFERENCE, ObjectType, ObjDesc); |
| 339 | if (ACPI_FAILURE (Status)) |
| 340 | { |
| 341 | return_ACPI_STATUS (Status); |
| 342 | } |
| 343 | goto NextOperand; |
| 344 | |
| 345 | case ARGI_DATAREFOBJ: /* Store operator only */ |
| 346 | /* |
| 347 | * We don't want to resolve IndexOp reference objects during |
| 348 | * a store because this would be an implicit DeRefOf operation. |
| 349 | * Instead, we just want to store the reference object. |
| 350 | * -- All others must be resolved below. |
| 351 | */ |
| 352 | if ((Opcode == AML_STORE_OP) && |
| 353 | ((*StackPtr)->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) && |
| 354 | ((*StackPtr)->Reference.Class == ACPI_REFCLASS_INDEX)) |
| 355 | { |
| 356 | goto NextOperand; |
| 357 | } |
| 358 | break; |
| 359 | |
| 360 | default: |
| 361 | |
| 362 | /* All cases covered above */ |
| 363 | |
| 364 | break; |
| 365 | } |
| 366 | |
| 367 | /* |
| 368 | * Resolve this object to a value |
| 369 | */ |
| 370 | Status = AcpiExResolveToValue (StackPtr, WalkState); |
| 371 | if (ACPI_FAILURE (Status)) |
| 372 | { |
| 373 | return_ACPI_STATUS (Status); |
| 374 | } |
| 375 | |
| 376 | /* Get the resolved object */ |
| 377 | |
| 378 | ObjDesc = *StackPtr; |
| 379 | |
| 380 | /* |
| 381 | * Check the resulting object (value) type |
| 382 | */ |
| 383 | switch (ThisArgType) |
| 384 | { |
| 385 | /* |
| 386 | * For the simple cases, only one type of resolved object |
| 387 | * is allowed |
| 388 | */ |
| 389 | case ARGI_MUTEX: |
| 390 | |
| 391 | /* Need an operand of type ACPI_TYPE_MUTEX */ |
| 392 | |
| 393 | TypeNeeded = ACPI_TYPE_MUTEX; |
| 394 | break; |
| 395 | |
| 396 | case ARGI_EVENT: |
| 397 | |
| 398 | /* Need an operand of type ACPI_TYPE_EVENT */ |
| 399 | |
| 400 | TypeNeeded = ACPI_TYPE_EVENT; |
| 401 | break; |
| 402 | |
| 403 | case ARGI_PACKAGE: /* Package */ |
| 404 | |
| 405 | /* Need an operand of type ACPI_TYPE_PACKAGE */ |
| 406 | |
| 407 | TypeNeeded = ACPI_TYPE_PACKAGE; |
| 408 | break; |
| 409 | |
| 410 | case ARGI_ANYTYPE: |
| 411 | |
| 412 | /* Any operand type will do */ |
| 413 | |
| 414 | TypeNeeded = ACPI_TYPE_ANY; |
| 415 | break; |
| 416 | |
| 417 | case ARGI_DDBHANDLE: |
| 418 | |
| 419 | /* Need an operand of type ACPI_TYPE_DDB_HANDLE */ |
| 420 | |
| 421 | TypeNeeded = ACPI_TYPE_LOCAL_REFERENCE; |
| 422 | break; |
| 423 | |
| 424 | |
| 425 | /* |
| 426 | * The more complex cases allow multiple resolved object types |
| 427 | */ |
| 428 | case ARGI_INTEGER: |
| 429 | |
| 430 | /* |
| 431 | * Need an operand of type ACPI_TYPE_INTEGER, but we can |
| 432 | * implicitly convert from a STRING or BUFFER. |
| 433 | * |
| 434 | * Known as "Implicit Source Operand Conversion" |
| 435 | */ |
| 436 | Status = AcpiExConvertToInteger (ObjDesc, StackPtr, |
| 437 | ACPI_STRTOUL_BASE16); |
| 438 | if (ACPI_FAILURE (Status)) |
| 439 | { |
| 440 | if (Status == AE_TYPE) |
| 441 | { |
| 442 | ACPI_ERROR ((AE_INFO, |
| 443 | "Needed [Integer/String/Buffer], found [%s] %p" , |
| 444 | AcpiUtGetObjectTypeName (ObjDesc), ObjDesc)); |
| 445 | |
| 446 | return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| 447 | } |
| 448 | |
| 449 | return_ACPI_STATUS (Status); |
| 450 | } |
| 451 | |
| 452 | if (ObjDesc != *StackPtr) |
| 453 | { |
| 454 | AcpiUtRemoveReference (ObjDesc); |
| 455 | } |
| 456 | goto NextOperand; |
| 457 | |
| 458 | case ARGI_BUFFER: |
| 459 | /* |
| 460 | * Need an operand of type ACPI_TYPE_BUFFER, |
| 461 | * But we can implicitly convert from a STRING or INTEGER |
| 462 | * Aka - "Implicit Source Operand Conversion" |
| 463 | */ |
| 464 | Status = AcpiExConvertToBuffer (ObjDesc, StackPtr); |
| 465 | if (ACPI_FAILURE (Status)) |
| 466 | { |
| 467 | if (Status == AE_TYPE) |
| 468 | { |
| 469 | ACPI_ERROR ((AE_INFO, |
| 470 | "Needed [Integer/String/Buffer], found [%s] %p" , |
| 471 | AcpiUtGetObjectTypeName (ObjDesc), ObjDesc)); |
| 472 | |
| 473 | return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| 474 | } |
| 475 | |
| 476 | return_ACPI_STATUS (Status); |
| 477 | } |
| 478 | |
| 479 | if (ObjDesc != *StackPtr) |
| 480 | { |
| 481 | AcpiUtRemoveReference (ObjDesc); |
| 482 | } |
| 483 | goto NextOperand; |
| 484 | |
| 485 | case ARGI_STRING: |
| 486 | /* |
| 487 | * Need an operand of type ACPI_TYPE_STRING, |
| 488 | * But we can implicitly convert from a BUFFER or INTEGER |
| 489 | * Aka - "Implicit Source Operand Conversion" |
| 490 | */ |
| 491 | Status = AcpiExConvertToString ( |
| 492 | ObjDesc, StackPtr, ACPI_IMPLICIT_CONVERT_HEX); |
| 493 | if (ACPI_FAILURE (Status)) |
| 494 | { |
| 495 | if (Status == AE_TYPE) |
| 496 | { |
| 497 | ACPI_ERROR ((AE_INFO, |
| 498 | "Needed [Integer/String/Buffer], found [%s] %p" , |
| 499 | AcpiUtGetObjectTypeName (ObjDesc), ObjDesc)); |
| 500 | |
| 501 | return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| 502 | } |
| 503 | |
| 504 | return_ACPI_STATUS (Status); |
| 505 | } |
| 506 | |
| 507 | if (ObjDesc != *StackPtr) |
| 508 | { |
| 509 | AcpiUtRemoveReference (ObjDesc); |
| 510 | } |
| 511 | goto NextOperand; |
| 512 | |
| 513 | case ARGI_COMPUTEDATA: |
| 514 | |
| 515 | /* Need an operand of type INTEGER, STRING or BUFFER */ |
| 516 | |
| 517 | switch (ObjDesc->Common.Type) |
| 518 | { |
| 519 | case ACPI_TYPE_INTEGER: |
| 520 | case ACPI_TYPE_STRING: |
| 521 | case ACPI_TYPE_BUFFER: |
| 522 | |
| 523 | /* Valid operand */ |
| 524 | break; |
| 525 | |
| 526 | default: |
| 527 | ACPI_ERROR ((AE_INFO, |
| 528 | "Needed [Integer/String/Buffer], found [%s] %p" , |
| 529 | AcpiUtGetObjectTypeName (ObjDesc), ObjDesc)); |
| 530 | |
| 531 | return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| 532 | } |
| 533 | goto NextOperand; |
| 534 | |
| 535 | case ARGI_BUFFER_OR_STRING: |
| 536 | |
| 537 | /* Need an operand of type STRING or BUFFER */ |
| 538 | |
| 539 | switch (ObjDesc->Common.Type) |
| 540 | { |
| 541 | case ACPI_TYPE_STRING: |
| 542 | case ACPI_TYPE_BUFFER: |
| 543 | |
| 544 | /* Valid operand */ |
| 545 | break; |
| 546 | |
| 547 | case ACPI_TYPE_INTEGER: |
| 548 | |
| 549 | /* Highest priority conversion is to type Buffer */ |
| 550 | |
| 551 | Status = AcpiExConvertToBuffer (ObjDesc, StackPtr); |
| 552 | if (ACPI_FAILURE (Status)) |
| 553 | { |
| 554 | return_ACPI_STATUS (Status); |
| 555 | } |
| 556 | |
| 557 | if (ObjDesc != *StackPtr) |
| 558 | { |
| 559 | AcpiUtRemoveReference (ObjDesc); |
| 560 | } |
| 561 | break; |
| 562 | |
| 563 | default: |
| 564 | ACPI_ERROR ((AE_INFO, |
| 565 | "Needed [Integer/String/Buffer], found [%s] %p" , |
| 566 | AcpiUtGetObjectTypeName (ObjDesc), ObjDesc)); |
| 567 | |
| 568 | return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| 569 | } |
| 570 | goto NextOperand; |
| 571 | |
| 572 | case ARGI_DATAOBJECT: |
| 573 | /* |
| 574 | * ARGI_DATAOBJECT is only used by the SizeOf operator. |
| 575 | * Need a buffer, string, package, or RefOf reference. |
| 576 | * |
| 577 | * The only reference allowed here is a direct reference to |
| 578 | * a namespace node. |
| 579 | */ |
| 580 | switch (ObjDesc->Common.Type) |
| 581 | { |
| 582 | case ACPI_TYPE_PACKAGE: |
| 583 | case ACPI_TYPE_STRING: |
| 584 | case ACPI_TYPE_BUFFER: |
| 585 | case ACPI_TYPE_LOCAL_REFERENCE: |
| 586 | |
| 587 | /* Valid operand */ |
| 588 | break; |
| 589 | |
| 590 | default: |
| 591 | |
| 592 | ACPI_ERROR ((AE_INFO, |
| 593 | "Needed [Buffer/String/Package/Reference], found [%s] %p" , |
| 594 | AcpiUtGetObjectTypeName (ObjDesc), ObjDesc)); |
| 595 | |
| 596 | return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| 597 | } |
| 598 | goto NextOperand; |
| 599 | |
| 600 | case ARGI_COMPLEXOBJ: |
| 601 | |
| 602 | /* Need a buffer or package or (ACPI 2.0) String */ |
| 603 | |
| 604 | switch (ObjDesc->Common.Type) |
| 605 | { |
| 606 | case ACPI_TYPE_PACKAGE: |
| 607 | case ACPI_TYPE_STRING: |
| 608 | case ACPI_TYPE_BUFFER: |
| 609 | |
| 610 | /* Valid operand */ |
| 611 | break; |
| 612 | |
| 613 | default: |
| 614 | |
| 615 | ACPI_ERROR ((AE_INFO, |
| 616 | "Needed [Buffer/String/Package], found [%s] %p" , |
| 617 | AcpiUtGetObjectTypeName (ObjDesc), ObjDesc)); |
| 618 | |
| 619 | return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| 620 | } |
| 621 | goto NextOperand; |
| 622 | |
| 623 | case ARGI_REGION_OR_BUFFER: /* Used by Load() only */ |
| 624 | |
| 625 | /* |
| 626 | * Need an operand of type REGION or a BUFFER |
| 627 | * (which could be a resolved region field) |
| 628 | */ |
| 629 | switch (ObjDesc->Common.Type) |
| 630 | { |
| 631 | case ACPI_TYPE_BUFFER: |
| 632 | case ACPI_TYPE_REGION: |
| 633 | |
| 634 | /* Valid operand */ |
| 635 | break; |
| 636 | |
| 637 | default: |
| 638 | |
| 639 | ACPI_ERROR ((AE_INFO, |
| 640 | "Needed [Region/Buffer], found [%s] %p" , |
| 641 | AcpiUtGetObjectTypeName (ObjDesc), ObjDesc)); |
| 642 | |
| 643 | return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| 644 | } |
| 645 | goto NextOperand; |
| 646 | |
| 647 | case ARGI_DATAREFOBJ: |
| 648 | |
| 649 | /* Used by the Store() operator only */ |
| 650 | |
| 651 | switch (ObjDesc->Common.Type) |
| 652 | { |
| 653 | case ACPI_TYPE_INTEGER: |
| 654 | case ACPI_TYPE_PACKAGE: |
| 655 | case ACPI_TYPE_STRING: |
| 656 | case ACPI_TYPE_BUFFER: |
| 657 | case ACPI_TYPE_BUFFER_FIELD: |
| 658 | case ACPI_TYPE_LOCAL_REFERENCE: |
| 659 | case ACPI_TYPE_LOCAL_REGION_FIELD: |
| 660 | case ACPI_TYPE_LOCAL_BANK_FIELD: |
| 661 | case ACPI_TYPE_LOCAL_INDEX_FIELD: |
| 662 | case ACPI_TYPE_DDB_HANDLE: |
| 663 | |
| 664 | /* Valid operand */ |
| 665 | break; |
| 666 | |
| 667 | default: |
| 668 | |
| 669 | if (AcpiGbl_EnableInterpreterSlack) |
| 670 | { |
| 671 | /* |
| 672 | * Enable original behavior of Store(), allowing any |
| 673 | * and all objects as the source operand. The ACPI |
| 674 | * spec does not allow this, however. |
| 675 | */ |
| 676 | break; |
| 677 | } |
| 678 | |
| 679 | if (TargetOp == AML_DEBUG_OP) |
| 680 | { |
| 681 | /* Allow store of any object to the Debug object */ |
| 682 | |
| 683 | break; |
| 684 | } |
| 685 | |
| 686 | ACPI_ERROR ((AE_INFO, |
| 687 | "Needed Integer/Buffer/String/Package/Ref/Ddb]" |
| 688 | ", found [%s] %p" , |
| 689 | AcpiUtGetObjectTypeName (ObjDesc), ObjDesc)); |
| 690 | |
| 691 | return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| 692 | } |
| 693 | goto NextOperand; |
| 694 | |
| 695 | default: |
| 696 | |
| 697 | /* Unknown type */ |
| 698 | |
| 699 | ACPI_ERROR ((AE_INFO, |
| 700 | "Internal - Unknown ARGI (required operand) type 0x%X" , |
| 701 | ThisArgType)); |
| 702 | |
| 703 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
| 704 | } |
| 705 | |
| 706 | /* |
| 707 | * Make sure that the original object was resolved to the |
| 708 | * required object type (Simple cases only). |
| 709 | */ |
| 710 | Status = AcpiExCheckObjectType ( |
| 711 | TypeNeeded, (*StackPtr)->Common.Type, *StackPtr); |
| 712 | if (ACPI_FAILURE (Status)) |
| 713 | { |
| 714 | return_ACPI_STATUS (Status); |
| 715 | } |
| 716 | |
| 717 | NextOperand: |
| 718 | /* |
| 719 | * If more operands needed, decrement StackPtr to point |
| 720 | * to next operand on stack |
| 721 | */ |
| 722 | if (GET_CURRENT_ARG_TYPE (ArgTypes)) |
| 723 | { |
| 724 | StackPtr--; |
| 725 | } |
| 726 | } |
| 727 | |
| 728 | ACPI_DUMP_OPERANDS (WalkState->Operands, |
| 729 | AcpiPsGetOpcodeName (Opcode), WalkState->NumOperands); |
| 730 | |
| 731 | return_ACPI_STATUS (Status); |
| 732 | } |
| 733 | |