| 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Module Name: psobject - Support for parse objects |
| 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 "acparser.h" |
| 47 | #include "amlcode.h" |
| 48 | |
| 49 | #define _COMPONENT ACPI_PARSER |
| 50 | ACPI_MODULE_NAME ("psobject" ) |
| 51 | |
| 52 | |
| 53 | /* Local prototypes */ |
| 54 | |
| 55 | static ACPI_STATUS |
| 56 | AcpiPsGetAmlOpcode ( |
| 57 | ACPI_WALK_STATE *WalkState); |
| 58 | |
| 59 | |
| 60 | /******************************************************************************* |
| 61 | * |
| 62 | * FUNCTION: AcpiPsGetAmlOpcode |
| 63 | * |
| 64 | * PARAMETERS: WalkState - Current state |
| 65 | * |
| 66 | * RETURN: Status |
| 67 | * |
| 68 | * DESCRIPTION: Extract the next AML opcode from the input stream. |
| 69 | * |
| 70 | ******************************************************************************/ |
| 71 | |
| 72 | static ACPI_STATUS |
| 73 | AcpiPsGetAmlOpcode ( |
| 74 | ACPI_WALK_STATE *WalkState) |
| 75 | { |
| 76 | UINT32 AmlOffset; |
| 77 | |
| 78 | |
| 79 | ACPI_FUNCTION_TRACE_PTR (PsGetAmlOpcode, WalkState); |
| 80 | |
| 81 | |
| 82 | WalkState->Aml = WalkState->ParserState.Aml; |
| 83 | WalkState->Opcode = AcpiPsPeekOpcode (&(WalkState->ParserState)); |
| 84 | |
| 85 | /* |
| 86 | * First cut to determine what we have found: |
| 87 | * 1) A valid AML opcode |
| 88 | * 2) A name string |
| 89 | * 3) An unknown/invalid opcode |
| 90 | */ |
| 91 | WalkState->OpInfo = AcpiPsGetOpcodeInfo (WalkState->Opcode); |
| 92 | |
| 93 | switch (WalkState->OpInfo->Class) |
| 94 | { |
| 95 | case AML_CLASS_ASCII: |
| 96 | case AML_CLASS_PREFIX: |
| 97 | /* |
| 98 | * Starts with a valid prefix or ASCII char, this is a name |
| 99 | * string. Convert the bare name string to a namepath. |
| 100 | */ |
| 101 | WalkState->Opcode = AML_INT_NAMEPATH_OP; |
| 102 | WalkState->ArgTypes = ARGP_NAMESTRING; |
| 103 | break; |
| 104 | |
| 105 | case AML_CLASS_UNKNOWN: |
| 106 | |
| 107 | /* The opcode is unrecognized. Complain and skip unknown opcodes */ |
| 108 | |
| 109 | if (WalkState->PassNumber == 2) |
| 110 | { |
| 111 | AmlOffset = (UINT32) ACPI_PTR_DIFF (WalkState->Aml, |
| 112 | WalkState->ParserState.AmlStart); |
| 113 | |
| 114 | ACPI_ERROR ((AE_INFO, |
| 115 | "Unknown opcode 0x%.2X at table offset 0x%.4X, ignoring" , |
| 116 | WalkState->Opcode, |
| 117 | (UINT32) (AmlOffset + sizeof (ACPI_TABLE_HEADER)))); |
| 118 | |
| 119 | ACPI_DUMP_BUFFER ((WalkState->ParserState.Aml - 16), 48); |
| 120 | |
| 121 | #ifdef ACPI_ASL_COMPILER |
| 122 | /* |
| 123 | * This is executed for the disassembler only. Output goes |
| 124 | * to the disassembled ASL output file. |
| 125 | */ |
| 126 | AcpiOsPrintf ( |
| 127 | "/*\nError: Unknown opcode 0x%.2X at table offset 0x%.4X, context:\n" , |
| 128 | WalkState->Opcode, |
| 129 | (UINT32) (AmlOffset + sizeof (ACPI_TABLE_HEADER))); |
| 130 | |
| 131 | /* Dump the context surrounding the invalid opcode */ |
| 132 | |
| 133 | AcpiUtDumpBuffer (((UINT8 *) WalkState->ParserState.Aml - 16), |
| 134 | 48, DB_BYTE_DISPLAY, |
| 135 | (AmlOffset + sizeof (ACPI_TABLE_HEADER) - 16)); |
| 136 | AcpiOsPrintf (" */\n" ); |
| 137 | #endif |
| 138 | } |
| 139 | |
| 140 | /* Increment past one-byte or two-byte opcode */ |
| 141 | |
| 142 | WalkState->ParserState.Aml++; |
| 143 | if (WalkState->Opcode > 0xFF) /* Can only happen if first byte is 0x5B */ |
| 144 | { |
| 145 | WalkState->ParserState.Aml++; |
| 146 | } |
| 147 | |
| 148 | return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE); |
| 149 | |
| 150 | default: |
| 151 | |
| 152 | /* Found opcode info, this is a normal opcode */ |
| 153 | |
| 154 | WalkState->ParserState.Aml += |
| 155 | AcpiPsGetOpcodeSize (WalkState->Opcode); |
| 156 | WalkState->ArgTypes = WalkState->OpInfo->ParseArgs; |
| 157 | break; |
| 158 | } |
| 159 | |
| 160 | return_ACPI_STATUS (AE_OK); |
| 161 | } |
| 162 | |
| 163 | |
| 164 | /******************************************************************************* |
| 165 | * |
| 166 | * FUNCTION: AcpiPsBuildNamedOp |
| 167 | * |
| 168 | * PARAMETERS: WalkState - Current state |
| 169 | * AmlOpStart - Begin of named Op in AML |
| 170 | * UnnamedOp - Early Op (not a named Op) |
| 171 | * Op - Returned Op |
| 172 | * |
| 173 | * RETURN: Status |
| 174 | * |
| 175 | * DESCRIPTION: Parse a named Op |
| 176 | * |
| 177 | ******************************************************************************/ |
| 178 | |
| 179 | ACPI_STATUS |
| 180 | AcpiPsBuildNamedOp ( |
| 181 | ACPI_WALK_STATE *WalkState, |
| 182 | UINT8 *AmlOpStart, |
| 183 | ACPI_PARSE_OBJECT *UnnamedOp, |
| 184 | ACPI_PARSE_OBJECT **Op) |
| 185 | { |
| 186 | ACPI_STATUS Status = AE_OK; |
| 187 | ACPI_PARSE_OBJECT *Arg = NULL; |
| 188 | |
| 189 | |
| 190 | ACPI_FUNCTION_TRACE_PTR (PsBuildNamedOp, WalkState); |
| 191 | |
| 192 | |
| 193 | UnnamedOp->Common.Value.Arg = NULL; |
| 194 | UnnamedOp->Common.ArgListLength = 0; |
| 195 | UnnamedOp->Common.AmlOpcode = WalkState->Opcode; |
| 196 | |
| 197 | /* |
| 198 | * Get and append arguments until we find the node that contains |
| 199 | * the name (the type ARGP_NAME). |
| 200 | */ |
| 201 | while (GET_CURRENT_ARG_TYPE (WalkState->ArgTypes) && |
| 202 | (GET_CURRENT_ARG_TYPE (WalkState->ArgTypes) != ARGP_NAME)) |
| 203 | { |
| 204 | Status = AcpiPsGetNextArg (WalkState, &(WalkState->ParserState), |
| 205 | GET_CURRENT_ARG_TYPE (WalkState->ArgTypes), &Arg); |
| 206 | if (ACPI_FAILURE (Status)) |
| 207 | { |
| 208 | return_ACPI_STATUS (Status); |
| 209 | } |
| 210 | |
| 211 | AcpiPsAppendArg (UnnamedOp, Arg); |
| 212 | INCREMENT_ARG_LIST (WalkState->ArgTypes); |
| 213 | } |
| 214 | |
| 215 | /* |
| 216 | * Make sure that we found a NAME and didn't run out of arguments |
| 217 | */ |
| 218 | if (!GET_CURRENT_ARG_TYPE (WalkState->ArgTypes)) |
| 219 | { |
| 220 | return_ACPI_STATUS (AE_AML_NO_OPERAND); |
| 221 | } |
| 222 | |
| 223 | /* We know that this arg is a name, move to next arg */ |
| 224 | |
| 225 | INCREMENT_ARG_LIST (WalkState->ArgTypes); |
| 226 | |
| 227 | /* |
| 228 | * Find the object. This will either insert the object into |
| 229 | * the namespace or simply look it up |
| 230 | */ |
| 231 | WalkState->Op = NULL; |
| 232 | |
| 233 | Status = WalkState->DescendingCallback (WalkState, Op); |
| 234 | if (ACPI_FAILURE (Status)) |
| 235 | { |
| 236 | if (Status != AE_CTRL_TERMINATE) |
| 237 | { |
| 238 | ACPI_EXCEPTION ((AE_INFO, Status, "During name lookup/catalog" )); |
| 239 | } |
| 240 | return_ACPI_STATUS (Status); |
| 241 | } |
| 242 | |
| 243 | if (!*Op) |
| 244 | { |
| 245 | return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE); |
| 246 | } |
| 247 | |
| 248 | Status = AcpiPsNextParseState (WalkState, *Op, Status); |
| 249 | if (ACPI_FAILURE (Status)) |
| 250 | { |
| 251 | if (Status == AE_CTRL_PENDING) |
| 252 | { |
| 253 | Status = AE_CTRL_PARSE_PENDING; |
| 254 | } |
| 255 | return_ACPI_STATUS (Status); |
| 256 | } |
| 257 | |
| 258 | AcpiPsAppendArg (*Op, UnnamedOp->Common.Value.Arg); |
| 259 | |
| 260 | if ((*Op)->Common.AmlOpcode == AML_REGION_OP || |
| 261 | (*Op)->Common.AmlOpcode == AML_DATA_REGION_OP) |
| 262 | { |
| 263 | /* |
| 264 | * Defer final parsing of an OperationRegion body, because we don't |
| 265 | * have enough info in the first pass to parse it correctly (i.e., |
| 266 | * there may be method calls within the TermArg elements of the body.) |
| 267 | * |
| 268 | * However, we must continue parsing because the opregion is not a |
| 269 | * standalone package -- we don't know where the end is at this point. |
| 270 | * |
| 271 | * (Length is unknown until parse of the body complete) |
| 272 | */ |
| 273 | (*Op)->Named.Data = AmlOpStart; |
| 274 | (*Op)->Named.Length = 0; |
| 275 | } |
| 276 | |
| 277 | return_ACPI_STATUS (AE_OK); |
| 278 | } |
| 279 | |
| 280 | |
| 281 | /******************************************************************************* |
| 282 | * |
| 283 | * FUNCTION: AcpiPsCreateOp |
| 284 | * |
| 285 | * PARAMETERS: WalkState - Current state |
| 286 | * AmlOpStart - Op start in AML |
| 287 | * NewOp - Returned Op |
| 288 | * |
| 289 | * RETURN: Status |
| 290 | * |
| 291 | * DESCRIPTION: Get Op from AML |
| 292 | * |
| 293 | ******************************************************************************/ |
| 294 | |
| 295 | ACPI_STATUS |
| 296 | AcpiPsCreateOp ( |
| 297 | ACPI_WALK_STATE *WalkState, |
| 298 | UINT8 *AmlOpStart, |
| 299 | ACPI_PARSE_OBJECT **NewOp) |
| 300 | { |
| 301 | ACPI_STATUS Status = AE_OK; |
| 302 | ACPI_PARSE_OBJECT *Op; |
| 303 | ACPI_PARSE_OBJECT *NamedOp = NULL; |
| 304 | ACPI_PARSE_OBJECT *ParentScope; |
| 305 | UINT8 ArgumentCount; |
| 306 | const ACPI_OPCODE_INFO *OpInfo; |
| 307 | |
| 308 | |
| 309 | ACPI_FUNCTION_TRACE_PTR (PsCreateOp, WalkState); |
| 310 | |
| 311 | |
| 312 | Status = AcpiPsGetAmlOpcode (WalkState); |
| 313 | if (Status == AE_CTRL_PARSE_CONTINUE) |
| 314 | { |
| 315 | return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE); |
| 316 | } |
| 317 | |
| 318 | /* Create Op structure and append to parent's argument list */ |
| 319 | |
| 320 | WalkState->OpInfo = AcpiPsGetOpcodeInfo (WalkState->Opcode); |
| 321 | Op = AcpiPsAllocOp (WalkState->Opcode, AmlOpStart); |
| 322 | if (!Op) |
| 323 | { |
| 324 | return_ACPI_STATUS (AE_NO_MEMORY); |
| 325 | } |
| 326 | |
| 327 | if (WalkState->OpInfo->Flags & AML_NAMED) |
| 328 | { |
| 329 | Status = AcpiPsBuildNamedOp (WalkState, AmlOpStart, Op, &NamedOp); |
| 330 | AcpiPsFreeOp (Op); |
| 331 | if (ACPI_FAILURE (Status)) |
| 332 | { |
| 333 | return_ACPI_STATUS (Status); |
| 334 | } |
| 335 | |
| 336 | *NewOp = NamedOp; |
| 337 | return_ACPI_STATUS (AE_OK); |
| 338 | } |
| 339 | |
| 340 | /* Not a named opcode, just allocate Op and append to parent */ |
| 341 | |
| 342 | if (WalkState->OpInfo->Flags & AML_CREATE) |
| 343 | { |
| 344 | /* |
| 345 | * Backup to beginning of CreateXXXfield declaration |
| 346 | * BodyLength is unknown until we parse the body |
| 347 | */ |
| 348 | Op->Named.Data = AmlOpStart; |
| 349 | Op->Named.Length = 0; |
| 350 | } |
| 351 | |
| 352 | if (WalkState->Opcode == AML_BANK_FIELD_OP) |
| 353 | { |
| 354 | /* |
| 355 | * Backup to beginning of BankField declaration |
| 356 | * BodyLength is unknown until we parse the body |
| 357 | */ |
| 358 | Op->Named.Data = AmlOpStart; |
| 359 | Op->Named.Length = 0; |
| 360 | } |
| 361 | |
| 362 | ParentScope = AcpiPsGetParentScope (&(WalkState->ParserState)); |
| 363 | AcpiPsAppendArg (ParentScope, Op); |
| 364 | |
| 365 | if (ParentScope) |
| 366 | { |
| 367 | OpInfo = AcpiPsGetOpcodeInfo (ParentScope->Common.AmlOpcode); |
| 368 | if (OpInfo->Flags & AML_HAS_TARGET) |
| 369 | { |
| 370 | ArgumentCount = AcpiPsGetArgumentCount (OpInfo->Type); |
| 371 | if (ParentScope->Common.ArgListLength > ArgumentCount) |
| 372 | { |
| 373 | Op->Common.Flags |= ACPI_PARSEOP_TARGET; |
| 374 | } |
| 375 | } |
| 376 | else if (ParentScope->Common.AmlOpcode == AML_INCREMENT_OP) |
| 377 | { |
| 378 | Op->Common.Flags |= ACPI_PARSEOP_TARGET; |
| 379 | } |
| 380 | } |
| 381 | |
| 382 | if (WalkState->DescendingCallback != NULL) |
| 383 | { |
| 384 | /* |
| 385 | * Find the object. This will either insert the object into |
| 386 | * the namespace or simply look it up |
| 387 | */ |
| 388 | WalkState->Op = *NewOp = Op; |
| 389 | |
| 390 | Status = WalkState->DescendingCallback (WalkState, &Op); |
| 391 | Status = AcpiPsNextParseState (WalkState, Op, Status); |
| 392 | if (Status == AE_CTRL_PENDING) |
| 393 | { |
| 394 | Status = AE_CTRL_PARSE_PENDING; |
| 395 | } |
| 396 | } |
| 397 | |
| 398 | return_ACPI_STATUS (Status); |
| 399 | } |
| 400 | |
| 401 | |
| 402 | /******************************************************************************* |
| 403 | * |
| 404 | * FUNCTION: AcpiPsCompleteOp |
| 405 | * |
| 406 | * PARAMETERS: WalkState - Current state |
| 407 | * Op - Returned Op |
| 408 | * Status - Parse status before complete Op |
| 409 | * |
| 410 | * RETURN: Status |
| 411 | * |
| 412 | * DESCRIPTION: Complete Op |
| 413 | * |
| 414 | ******************************************************************************/ |
| 415 | |
| 416 | ACPI_STATUS |
| 417 | AcpiPsCompleteOp ( |
| 418 | ACPI_WALK_STATE *WalkState, |
| 419 | ACPI_PARSE_OBJECT **Op, |
| 420 | ACPI_STATUS Status) |
| 421 | { |
| 422 | ACPI_STATUS Status2; |
| 423 | |
| 424 | |
| 425 | ACPI_FUNCTION_TRACE_PTR (PsCompleteOp, WalkState); |
| 426 | |
| 427 | |
| 428 | /* |
| 429 | * Finished one argument of the containing scope |
| 430 | */ |
| 431 | WalkState->ParserState.Scope->ParseScope.ArgCount--; |
| 432 | |
| 433 | /* Close this Op (will result in parse subtree deletion) */ |
| 434 | |
| 435 | Status2 = AcpiPsCompleteThisOp (WalkState, *Op); |
| 436 | if (ACPI_FAILURE (Status2)) |
| 437 | { |
| 438 | return_ACPI_STATUS (Status2); |
| 439 | } |
| 440 | |
| 441 | *Op = NULL; |
| 442 | |
| 443 | switch (Status) |
| 444 | { |
| 445 | case AE_OK: |
| 446 | |
| 447 | break; |
| 448 | |
| 449 | case AE_CTRL_TRANSFER: |
| 450 | |
| 451 | /* We are about to transfer to a called method */ |
| 452 | |
| 453 | WalkState->PrevOp = NULL; |
| 454 | WalkState->PrevArgTypes = WalkState->ArgTypes; |
| 455 | return_ACPI_STATUS (Status); |
| 456 | |
| 457 | case AE_CTRL_END: |
| 458 | |
| 459 | AcpiPsPopScope (&(WalkState->ParserState), Op, |
| 460 | &WalkState->ArgTypes, &WalkState->ArgCount); |
| 461 | |
| 462 | if (*Op) |
| 463 | { |
| 464 | WalkState->Op = *Op; |
| 465 | WalkState->OpInfo = AcpiPsGetOpcodeInfo ((*Op)->Common.AmlOpcode); |
| 466 | WalkState->Opcode = (*Op)->Common.AmlOpcode; |
| 467 | |
| 468 | Status = WalkState->AscendingCallback (WalkState); |
| 469 | Status = AcpiPsNextParseState (WalkState, *Op, Status); |
| 470 | |
| 471 | Status2 = AcpiPsCompleteThisOp (WalkState, *Op); |
| 472 | if (ACPI_FAILURE (Status2)) |
| 473 | { |
| 474 | return_ACPI_STATUS (Status2); |
| 475 | } |
| 476 | } |
| 477 | |
| 478 | Status = AE_OK; |
| 479 | break; |
| 480 | |
| 481 | case AE_CTRL_BREAK: |
| 482 | case AE_CTRL_CONTINUE: |
| 483 | |
| 484 | /* Pop off scopes until we find the While */ |
| 485 | |
| 486 | while (!(*Op) || ((*Op)->Common.AmlOpcode != AML_WHILE_OP)) |
| 487 | { |
| 488 | AcpiPsPopScope (&(WalkState->ParserState), Op, |
| 489 | &WalkState->ArgTypes, &WalkState->ArgCount); |
| 490 | } |
| 491 | |
| 492 | /* Close this iteration of the While loop */ |
| 493 | |
| 494 | WalkState->Op = *Op; |
| 495 | WalkState->OpInfo = AcpiPsGetOpcodeInfo ((*Op)->Common.AmlOpcode); |
| 496 | WalkState->Opcode = (*Op)->Common.AmlOpcode; |
| 497 | |
| 498 | Status = WalkState->AscendingCallback (WalkState); |
| 499 | Status = AcpiPsNextParseState (WalkState, *Op, Status); |
| 500 | |
| 501 | Status2 = AcpiPsCompleteThisOp (WalkState, *Op); |
| 502 | if (ACPI_FAILURE (Status2)) |
| 503 | { |
| 504 | return_ACPI_STATUS (Status2); |
| 505 | } |
| 506 | |
| 507 | Status = AE_OK; |
| 508 | break; |
| 509 | |
| 510 | case AE_CTRL_TERMINATE: |
| 511 | |
| 512 | /* Clean up */ |
| 513 | do |
| 514 | { |
| 515 | if (*Op) |
| 516 | { |
| 517 | Status2 = AcpiPsCompleteThisOp (WalkState, *Op); |
| 518 | if (ACPI_FAILURE (Status2)) |
| 519 | { |
| 520 | return_ACPI_STATUS (Status2); |
| 521 | } |
| 522 | |
| 523 | AcpiUtDeleteGenericState ( |
| 524 | AcpiUtPopGenericState (&WalkState->ControlState)); |
| 525 | } |
| 526 | |
| 527 | AcpiPsPopScope (&(WalkState->ParserState), Op, |
| 528 | &WalkState->ArgTypes, &WalkState->ArgCount); |
| 529 | |
| 530 | } while (*Op); |
| 531 | |
| 532 | return_ACPI_STATUS (AE_OK); |
| 533 | |
| 534 | default: /* All other non-AE_OK status */ |
| 535 | |
| 536 | do |
| 537 | { |
| 538 | if (*Op) |
| 539 | { |
| 540 | Status2 = AcpiPsCompleteThisOp (WalkState, *Op); |
| 541 | if (ACPI_FAILURE (Status2)) |
| 542 | { |
| 543 | return_ACPI_STATUS (Status2); |
| 544 | } |
| 545 | } |
| 546 | |
| 547 | AcpiPsPopScope (&(WalkState->ParserState), Op, |
| 548 | &WalkState->ArgTypes, &WalkState->ArgCount); |
| 549 | |
| 550 | } while (*Op); |
| 551 | |
| 552 | |
| 553 | #if 0 |
| 554 | /* |
| 555 | * TBD: Cleanup parse ops on error |
| 556 | */ |
| 557 | if (*Op == NULL) |
| 558 | { |
| 559 | AcpiPsPopScope (ParserState, Op, |
| 560 | &WalkState->ArgTypes, &WalkState->ArgCount); |
| 561 | } |
| 562 | #endif |
| 563 | WalkState->PrevOp = NULL; |
| 564 | WalkState->PrevArgTypes = WalkState->ArgTypes; |
| 565 | return_ACPI_STATUS (Status); |
| 566 | } |
| 567 | |
| 568 | /* This scope complete? */ |
| 569 | |
| 570 | if (AcpiPsHasCompletedScope (&(WalkState->ParserState))) |
| 571 | { |
| 572 | AcpiPsPopScope (&(WalkState->ParserState), Op, |
| 573 | &WalkState->ArgTypes, &WalkState->ArgCount); |
| 574 | ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Popped scope, Op=%p\n" , *Op)); |
| 575 | } |
| 576 | else |
| 577 | { |
| 578 | *Op = NULL; |
| 579 | } |
| 580 | |
| 581 | return_ACPI_STATUS (AE_OK); |
| 582 | } |
| 583 | |
| 584 | |
| 585 | /******************************************************************************* |
| 586 | * |
| 587 | * FUNCTION: AcpiPsCompleteFinalOp |
| 588 | * |
| 589 | * PARAMETERS: WalkState - Current state |
| 590 | * Op - Current Op |
| 591 | * Status - Current parse status before complete last |
| 592 | * Op |
| 593 | * |
| 594 | * RETURN: Status |
| 595 | * |
| 596 | * DESCRIPTION: Complete last Op. |
| 597 | * |
| 598 | ******************************************************************************/ |
| 599 | |
| 600 | ACPI_STATUS |
| 601 | AcpiPsCompleteFinalOp ( |
| 602 | ACPI_WALK_STATE *WalkState, |
| 603 | ACPI_PARSE_OBJECT *Op, |
| 604 | ACPI_STATUS Status) |
| 605 | { |
| 606 | ACPI_STATUS Status2; |
| 607 | |
| 608 | |
| 609 | ACPI_FUNCTION_TRACE_PTR (PsCompleteFinalOp, WalkState); |
| 610 | |
| 611 | |
| 612 | /* |
| 613 | * Complete the last Op (if not completed), and clear the scope stack. |
| 614 | * It is easily possible to end an AML "package" with an unbounded number |
| 615 | * of open scopes (such as when several ASL blocks are closed with |
| 616 | * sequential closing braces). We want to terminate each one cleanly. |
| 617 | */ |
| 618 | ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "AML package complete at Op %p\n" , Op)); |
| 619 | do |
| 620 | { |
| 621 | if (Op) |
| 622 | { |
| 623 | if (WalkState->AscendingCallback != NULL) |
| 624 | { |
| 625 | WalkState->Op = Op; |
| 626 | WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); |
| 627 | WalkState->Opcode = Op->Common.AmlOpcode; |
| 628 | |
| 629 | Status = WalkState->AscendingCallback (WalkState); |
| 630 | Status = AcpiPsNextParseState (WalkState, Op, Status); |
| 631 | if (Status == AE_CTRL_PENDING) |
| 632 | { |
| 633 | Status = AcpiPsCompleteOp (WalkState, &Op, AE_OK); |
| 634 | if (ACPI_FAILURE (Status)) |
| 635 | { |
| 636 | return_ACPI_STATUS (Status); |
| 637 | } |
| 638 | } |
| 639 | |
| 640 | if (Status == AE_CTRL_TERMINATE) |
| 641 | { |
| 642 | Status = AE_OK; |
| 643 | |
| 644 | /* Clean up */ |
| 645 | do |
| 646 | { |
| 647 | if (Op) |
| 648 | { |
| 649 | Status2 = AcpiPsCompleteThisOp (WalkState, Op); |
| 650 | if (ACPI_FAILURE (Status2)) |
| 651 | { |
| 652 | return_ACPI_STATUS (Status2); |
| 653 | } |
| 654 | } |
| 655 | |
| 656 | AcpiPsPopScope (&(WalkState->ParserState), &Op, |
| 657 | &WalkState->ArgTypes, &WalkState->ArgCount); |
| 658 | |
| 659 | } while (Op); |
| 660 | |
| 661 | return_ACPI_STATUS (Status); |
| 662 | } |
| 663 | |
| 664 | else if (ACPI_FAILURE (Status)) |
| 665 | { |
| 666 | /* First error is most important */ |
| 667 | |
| 668 | (void) AcpiPsCompleteThisOp (WalkState, Op); |
| 669 | return_ACPI_STATUS (Status); |
| 670 | } |
| 671 | } |
| 672 | |
| 673 | Status2 = AcpiPsCompleteThisOp (WalkState, Op); |
| 674 | if (ACPI_FAILURE (Status2)) |
| 675 | { |
| 676 | return_ACPI_STATUS (Status2); |
| 677 | } |
| 678 | } |
| 679 | |
| 680 | AcpiPsPopScope (&(WalkState->ParserState), &Op, &WalkState->ArgTypes, |
| 681 | &WalkState->ArgCount); |
| 682 | |
| 683 | } while (Op); |
| 684 | |
| 685 | return_ACPI_STATUS (Status); |
| 686 | } |
| 687 | |