/****************************************************************************** * * Module Name: psobject - Support for parse objects * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2021, Intel Corp. * All rights reserved. * * 2. License * * 2.1. This is your license from Intel Corp. under its intellectual property * rights. You may have additional license terms from the party that provided * you this software, covering your right to use that party's intellectual * property rights. * * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a * copy of the source code appearing in this file ("Covered Code") an * irrevocable, perpetual, worldwide license under Intel's copyrights in the * base code distributed originally by Intel ("Original Intel Code") to copy, * make derivatives, distribute, use and display any portion of the Covered * Code in any form, with the right to sublicense such rights; and * * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent * license (with the right to sublicense), under only those claims of Intel * patents that are infringed by the Original Intel Code, to make, use, sell, * offer to sell, and import the Covered Code and derivative works thereof * solely to the minimum extent necessary to exercise the above copyright * license, and in no event shall the patent license extend to any additions * to or modifications of the Original Intel Code. No other license or right * is granted directly or by implication, estoppel or otherwise; * * The above copyright and patent license is granted only if the following * conditions are met: * * 3. Conditions * * 3.1. Redistribution of Source with Rights to Further Distribute Source. * Redistribution of source code of any substantial portion of the Covered * Code or modification with rights to further distribute source must include * the above Copyright Notice, the above License, this list of Conditions, * and the following Disclaimer and Export Compliance provision. In addition, * Licensee must cause all Covered Code to which Licensee contributes to * contain a file documenting the changes Licensee made to create that Covered * Code and the date of any change. Licensee must include in that file the * documentation of any changes made by any predecessor Licensee. Licensee * must include a prominent statement that the modification is derived, * directly or indirectly, from Original Intel Code. * * 3.2. Redistribution of Source with no Rights to Further Distribute Source. * Redistribution of source code of any substantial portion of the Covered * Code or modification without rights to further distribute source must * include the following Disclaimer and Export Compliance provision in the * documentation and/or other materials provided with distribution. In * addition, Licensee may not authorize further sublicense of source of any * portion of the Covered Code, and must include terms to the effect that the * license from Licensee to its licensee is limited to the intellectual * property embodied in the software Licensee provides to its licensee, and * not to intellectual property embodied in modifications its licensee may * make. * * 3.3. Redistribution of Executable. Redistribution in executable form of any * substantial portion of the Covered Code or modification must reproduce the * above Copyright Notice, and the following Disclaimer and Export Compliance * provision in the documentation and/or other materials provided with the * distribution. * * 3.4. Intel retains all right, title, and interest in and to the Original * Intel Code. * * 3.5. Neither the name Intel nor any other trademark owned or controlled by * Intel shall be used in advertising or otherwise to promote the sale, use or * other dealings in products derived from or relating to the Covered Code * without prior written authorization from Intel. * * 4. Disclaimer and Export Compliance * * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A * PARTICULAR PURPOSE. * * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY * LIMITED REMEDY. * * 4.3. Licensee shall not export, either directly or indirectly, any of this * software or system incorporating such software without first obtaining any * required license or other approval from the U. S. Department of Commerce or * any other agency or department of the United States Government. In the * event Licensee exports any such software from the United States or * re-exports any such software from a foreign destination, Licensee shall * ensure that the distribution and export/re-export of the software is in * compliance with all laws, regulations, orders, or other restrictions of the * U.S. Export Administration Regulations. Licensee agrees that neither it nor * any of its subsidiaries will export/re-export any technical data, process, * software, or service, directly or indirectly, to any country for which the * United States government or any agency thereof requires an export license, * other governmental approval, or letter of assurance, without first obtaining * such license, approval or letter. * ***************************************************************************** * * Alternatively, you may choose to be licensed under the terms of the * following license: * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * substantially similar to the "NO WARRANTY" disclaimer below * ("Disclaimer") and any redistribution must be conditioned upon * including a substantially similar Disclaimer requirement for further * binary redistribution. * 3. Neither the names of the above-listed copyright holders nor the names * of any contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * Alternatively, you may choose to be licensed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * *****************************************************************************/ #include "acpi.h" #include "accommon.h" #include "acparser.h" #include "amlcode.h" #include "acconvert.h" #include "acnamesp.h" #define _COMPONENT ACPI_PARSER ACPI_MODULE_NAME ("psobject") /* Local prototypes */ static ACPI_STATUS AcpiPsGetAmlOpcode ( ACPI_WALK_STATE *WalkState); /******************************************************************************* * * FUNCTION: AcpiPsGetAmlOpcode * * PARAMETERS: WalkState - Current state * * RETURN: Status * * DESCRIPTION: Extract the next AML opcode from the input stream. * ******************************************************************************/ static ACPI_STATUS AcpiPsGetAmlOpcode ( ACPI_WALK_STATE *WalkState) { ACPI_ERROR_ONLY (UINT32 AmlOffset); ACPI_FUNCTION_TRACE_PTR (PsGetAmlOpcode, WalkState); WalkState->Aml = WalkState->ParserState.Aml; WalkState->Opcode = AcpiPsPeekOpcode (&(WalkState->ParserState)); /* * First cut to determine what we have found: * 1) A valid AML opcode * 2) A name string * 3) An unknown/invalid opcode */ WalkState->OpInfo = AcpiPsGetOpcodeInfo (WalkState->Opcode); switch (WalkState->OpInfo->Class) { case AML_CLASS_ASCII: case AML_CLASS_PREFIX: /* * Starts with a valid prefix or ASCII char, this is a name * string. Convert the bare name string to a namepath. */ WalkState->Opcode = AML_INT_NAMEPATH_OP; WalkState->ArgTypes = ARGP_NAMESTRING; break; case AML_CLASS_UNKNOWN: /* The opcode is unrecognized. Complain and skip unknown opcodes */ if (WalkState->PassNumber == 2) { ACPI_ERROR_ONLY(AmlOffset = (UINT32) ACPI_PTR_DIFF (WalkState->Aml, WalkState->ParserState.AmlStart)); ACPI_ERROR ((AE_INFO, "Unknown opcode 0x%.2X at table offset 0x%.4X, ignoring", WalkState->Opcode, (UINT32) (AmlOffset + sizeof (ACPI_TABLE_HEADER)))); ACPI_DUMP_BUFFER ((WalkState->ParserState.Aml - 16), 48); #ifdef ACPI_ASL_COMPILER /* * This is executed for the disassembler only. Output goes * to the disassembled ASL output file. */ AcpiOsPrintf ( "/*\nError: Unknown opcode 0x%.2X at table offset 0x%.4X, context:\n", WalkState->Opcode, (UINT32) (AmlOffset + sizeof (ACPI_TABLE_HEADER))); ACPI_ERROR ((AE_INFO, "Aborting disassembly, AML byte code is corrupt")); /* Dump the context surrounding the invalid opcode */ AcpiUtDumpBuffer (((UINT8 *) WalkState->ParserState.Aml - 16), 48, DB_BYTE_DISPLAY, (AmlOffset + sizeof (ACPI_TABLE_HEADER) - 16)); AcpiOsPrintf (" */\n"); /* * Just abort the disassembly, cannot continue because the * parser is essentially lost. The disassembler can then * randomly fail because an ill-constructed parse tree * can result. */ return_ACPI_STATUS (AE_AML_BAD_OPCODE); #endif } /* Increment past one-byte or two-byte opcode */ WalkState->ParserState.Aml++; if (WalkState->Opcode > 0xFF) /* Can only happen if first byte is 0x5B */ { WalkState->ParserState.Aml++; } return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE); default: /* Found opcode info, this is a normal opcode */ WalkState->ParserState.Aml += AcpiPsGetOpcodeSize (WalkState->Opcode); WalkState->ArgTypes = WalkState->OpInfo->ParseArgs; break; } return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: AcpiPsBuildNamedOp * * PARAMETERS: WalkState - Current state * AmlOpStart - Begin of named Op in AML * UnnamedOp - Early Op (not a named Op) * Op - Returned Op * * RETURN: Status * * DESCRIPTION: Parse a named Op * ******************************************************************************/ ACPI_STATUS AcpiPsBuildNamedOp ( ACPI_WALK_STATE *WalkState, UINT8 *AmlOpStart, ACPI_PARSE_OBJECT *UnnamedOp, ACPI_PARSE_OBJECT **Op) { ACPI_STATUS Status = AE_OK; ACPI_PARSE_OBJECT *Arg = NULL; ACPI_FUNCTION_TRACE_PTR (PsBuildNamedOp, WalkState); UnnamedOp->Common.Value.Arg = NULL; UnnamedOp->Common.ArgListLength = 0; UnnamedOp->Common.AmlOpcode = WalkState->Opcode; /* * Get and append arguments until we find the node that contains * the name (the type ARGP_NAME). */ while (GET_CURRENT_ARG_TYPE (WalkState->ArgTypes) && (GET_CURRENT_ARG_TYPE (WalkState->ArgTypes) != ARGP_NAME)) { ASL_CV_CAPTURE_COMMENTS (WalkState); Status = AcpiPsGetNextArg (WalkState, &(WalkState->ParserState), GET_CURRENT_ARG_TYPE (WalkState->ArgTypes), &Arg); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } AcpiPsAppendArg (UnnamedOp, Arg); INCREMENT_ARG_LIST (WalkState->ArgTypes); } /* are there any inline comments associated with the NameSeg?? If so, save this. */ ASL_CV_CAPTURE_COMMENTS (WalkState); #ifdef ACPI_ASL_COMPILER if (AcpiGbl_CurrentInlineComment != NULL) { UnnamedOp->Common.NameComment = AcpiGbl_CurrentInlineComment; AcpiGbl_CurrentInlineComment = NULL; } #endif /* * Make sure that we found a NAME and didn't run out of arguments */ if (!GET_CURRENT_ARG_TYPE (WalkState->ArgTypes)) { return_ACPI_STATUS (AE_AML_NO_OPERAND); } /* We know that this arg is a name, move to next arg */ INCREMENT_ARG_LIST (WalkState->ArgTypes); /* * Find the object. This will either insert the object into * the namespace or simply look it up */ WalkState->Op = NULL; Status = WalkState->DescendingCallback (WalkState, Op); if (ACPI_FAILURE (Status)) { if (Status != AE_CTRL_TERMINATE) { ACPI_EXCEPTION ((AE_INFO, Status, "During name lookup/catalog")); } return_ACPI_STATUS (Status); } if (!*Op) { return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE); } Status = AcpiPsNextParseState (WalkState, *Op, Status); if (ACPI_FAILURE (Status)) { if (Status == AE_CTRL_PENDING) { Status = AE_CTRL_PARSE_PENDING; } return_ACPI_STATUS (Status); } AcpiPsAppendArg (*Op, UnnamedOp->Common.Value.Arg); #ifdef ACPI_ASL_COMPILER /* save any comments that might be associated with UnnamedOp. */ (*Op)->Common.InlineComment = UnnamedOp->Common.InlineComment; (*Op)->Common.EndNodeComment = UnnamedOp->Common.EndNodeComment; (*Op)->Common.CloseBraceComment = UnnamedOp->Common.CloseBraceComment; (*Op)->Common.NameComment = UnnamedOp->Common.NameComment; (*Op)->Common.CommentList = UnnamedOp->Common.CommentList; (*Op)->Common.EndBlkComment = UnnamedOp->Common.EndBlkComment; (*Op)->Common.CvFilename = UnnamedOp->Common.CvFilename; (*Op)->Common.CvParentFilename = UnnamedOp->Common.CvParentFilename; (*Op)->Named.Aml = UnnamedOp->Common.Aml; UnnamedOp->Common.InlineComment = NULL; UnnamedOp->Common.EndNodeComment = NULL; UnnamedOp->Common.CloseBraceComment = NULL; UnnamedOp->Common.NameComment = NULL; UnnamedOp->Common.CommentList = NULL; UnnamedOp->Common.EndBlkComment = NULL; #endif if ((*Op)->Common.AmlOpcode == AML_REGION_OP || (*Op)->Common.AmlOpcode == AML_DATA_REGION_OP) { /* * Defer final parsing of an OperationRegion body, because we don't * have enough info in the first pass to parse it correctly (i.e., * there may be method calls within the TermArg elements of the body.) * * However, we must continue parsing because the opregion is not a * standalone package -- we don't know where the end is at this point. * * (Length is unknown until parse of the body complete) */ (*Op)->Named.Data = AmlOpStart; (*Op)->Named.Length = 0; } return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: AcpiPsCreateOp * * PARAMETERS: WalkState - Current state * AmlOpStart - Op start in AML * NewOp - Returned Op * * RETURN: Status * * DESCRIPTION: Get Op from AML * ******************************************************************************/ ACPI_STATUS AcpiPsCreateOp ( ACPI_WALK_STATE *WalkState, UINT8 *AmlOpStart, ACPI_PARSE_OBJECT **NewOp) { ACPI_STATUS Status = AE_OK; ACPI_PARSE_OBJECT *Op; ACPI_PARSE_OBJECT *NamedOp = NULL; ACPI_PARSE_OBJECT *ParentScope; UINT8 ArgumentCount; const ACPI_OPCODE_INFO *OpInfo; ACPI_FUNCTION_TRACE_PTR (PsCreateOp, WalkState); Status = AcpiPsGetAmlOpcode (WalkState); if (Status == AE_CTRL_PARSE_CONTINUE) { return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE); } if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Create Op structure and append to parent's argument list */ WalkState->OpInfo = AcpiPsGetOpcodeInfo (WalkState->Opcode); Op = AcpiPsAllocOp (WalkState->Opcode, AmlOpStart); if (!Op) { return_ACPI_STATUS (AE_NO_MEMORY); } if (WalkState->OpInfo->Flags & AML_NAMED) { Status = AcpiPsBuildNamedOp (WalkState, AmlOpStart, Op, &NamedOp); AcpiPsFreeOp (Op); #ifdef ACPI_ASL_COMPILER if (AcpiGbl_DisasmFlag && WalkState->Opcode == AML_EXTERNAL_OP && Status == AE_NOT_FOUND) { /* * If parsing of AML_EXTERNAL_OP's name path fails, then skip * past this opcode and keep parsing. This is a much better * alternative than to abort the entire disassembler. At this * point, the ParserState is at the end of the namepath of the * external declaration opcode. Setting WalkState->Aml to * WalkState->ParserState.Aml + 2 moves increments the * WalkState->Aml past the object type and the paramcount of the * external opcode. */ WalkState->Aml = WalkState->ParserState.Aml + 2; WalkState->ParserState.Aml = WalkState->Aml; return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE); } #endif if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } *NewOp = NamedOp; return_ACPI_STATUS (AE_OK); } /* Not a named opcode, just allocate Op and append to parent */ if (WalkState->OpInfo->Flags & AML_CREATE) { /* * Backup to beginning of CreateXXXfield declaration * BodyLength is unknown until we parse the body */ Op->Named.Data = AmlOpStart; Op->Named.Length = 0; } if (WalkState->Opcode == AML_BANK_FIELD_OP) { /* * Backup to beginning of BankField declaration * BodyLength is unknown until we parse the body */ Op->Named.Data = AmlOpStart; Op->Named.Length = 0; } ParentScope = AcpiPsGetParentScope (&(WalkState->ParserState)); AcpiPsAppendArg (ParentScope, Op); if (ParentScope) { OpInfo = AcpiPsGetOpcodeInfo (ParentScope->Common.AmlOpcode); if (OpInfo->Flags & AML_HAS_TARGET) { ArgumentCount = AcpiPsGetArgumentCount (OpInfo->Type); if (ParentScope->Common.ArgListLength > ArgumentCount) { Op->Common.Flags |= ACPI_PARSEOP_TARGET; } } /* * Special case for both Increment() and Decrement(), where * the lone argument is both a source and a target. */ else if ((ParentScope->Common.AmlOpcode == AML_INCREMENT_OP) || (ParentScope->Common.AmlOpcode == AML_DECREMENT_OP)) { Op->Common.Flags |= ACPI_PARSEOP_TARGET; } } if (WalkState->DescendingCallback != NULL) { /* * Find the object. This will either insert the object into * the namespace or simply look it up */ WalkState->Op = *NewOp = Op; Status = WalkState->DescendingCallback (WalkState, &Op); Status = AcpiPsNextParseState (WalkState, Op, Status); if (Status == AE_CTRL_PENDING) { Status = AE_CTRL_PARSE_PENDING; } } return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiPsCompleteOp * * PARAMETERS: WalkState - Current state * Op - Returned Op * Status - Parse status before complete Op * * RETURN: Status * * DESCRIPTION: Complete Op * ******************************************************************************/ ACPI_STATUS AcpiPsCompleteOp ( ACPI_WALK_STATE *WalkState, ACPI_PARSE_OBJECT **Op, ACPI_STATUS Status) { ACPI_STATUS Status2; ACPI_FUNCTION_TRACE_PTR (PsCompleteOp, WalkState); /* * Finished one argument of the containing scope */ WalkState->ParserState.Scope->ParseScope.ArgCount--; /* Close this Op (will result in parse subtree deletion) */ Status2 = AcpiPsCompleteThisOp (WalkState, *Op); if (ACPI_FAILURE (Status2)) { return_ACPI_STATUS (Status2); } *Op = NULL; switch (Status) { case AE_OK: break; case AE_CTRL_TRANSFER: /* We are about to transfer to a called method */ WalkState->PrevOp = NULL; WalkState->PrevArgTypes = WalkState->ArgTypes; return_ACPI_STATUS (Status); case AE_CTRL_END: AcpiPsPopScope (&(WalkState->ParserState), Op, &WalkState->ArgTypes, &WalkState->ArgCount); if (*Op) { WalkState->Op = *Op; WalkState->OpInfo = AcpiPsGetOpcodeInfo ((*Op)->Common.AmlOpcode); WalkState->Opcode = (*Op)->Common.AmlOpcode; Status = WalkState->AscendingCallback (WalkState); (void) AcpiPsNextParseState (WalkState, *Op, Status); Status2 = AcpiPsCompleteThisOp (WalkState, *Op); if (ACPI_FAILURE (Status2)) { return_ACPI_STATUS (Status2); } } break; case AE_CTRL_BREAK: case AE_CTRL_CONTINUE: /* Pop off scopes until we find the While */ while (!(*Op) || ((*Op)->Common.AmlOpcode != AML_WHILE_OP)) { AcpiPsPopScope (&(WalkState->ParserState), Op, &WalkState->ArgTypes, &WalkState->ArgCount); } /* Close this iteration of the While loop */ WalkState->Op = *Op; WalkState->OpInfo = AcpiPsGetOpcodeInfo ((*Op)->Common.AmlOpcode); WalkState->Opcode = (*Op)->Common.AmlOpcode; Status = WalkState->AscendingCallback (WalkState); (void) AcpiPsNextParseState (WalkState, *Op, Status); Status2 = AcpiPsCompleteThisOp (WalkState, *Op); if (ACPI_FAILURE (Status2)) { return_ACPI_STATUS (Status2); } break; case AE_CTRL_TERMINATE: /* Clean up */ do { if (*Op) { Status2 = AcpiPsCompleteThisOp (WalkState, *Op); if (ACPI_FAILURE (Status2)) { return_ACPI_STATUS (Status2); } AcpiUtDeleteGenericState ( AcpiUtPopGenericState (&WalkState->ControlState)); } AcpiPsPopScope (&(WalkState->ParserState), Op, &WalkState->ArgTypes, &WalkState->ArgCount); } while (*Op); return_ACPI_STATUS (AE_OK); default: /* All other non-AE_OK status */ do { if (*Op) { /* * These Opcodes need to be removed from the namespace because they * get created even if these opcodes cannot be created due to * errors. */ if (((*Op)->Common.AmlOpcode == AML_REGION_OP) || ((*Op)->Common.AmlOpcode == AML_DATA_REGION_OP)) { AcpiNsDeleteChildren ((*Op)->Common.Node); AcpiNsRemoveNode ((*Op)->Common.Node); (*Op)->Common.Node = NULL; AcpiPsDeleteParseTree (*Op); } Status2 = AcpiPsCompleteThisOp (WalkState, *Op); if (ACPI_FAILURE (Status2)) { return_ACPI_STATUS (Status2); } } AcpiPsPopScope (&(WalkState->ParserState), Op, &WalkState->ArgTypes, &WalkState->ArgCount); } while (*Op); #if 0 /* * TBD: Cleanup parse ops on error */ if (*Op == NULL) { AcpiPsPopScope (ParserState, Op, &WalkState->ArgTypes, &WalkState->ArgCount); } #endif WalkState->PrevOp = NULL; WalkState->PrevArgTypes = WalkState->ArgTypes; if (WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL) { /* * There was something that went wrong while executing code at the * module-level. We need to skip parsing whatever caused the * error and keep going. One runtime error during the table load * should not cause the entire table to not be loaded. This is * because there could be correct AML beyond the parts that caused * the runtime error. */ ACPI_INFO (("Ignoring error and continuing table load")); return_ACPI_STATUS (AE_OK); } return_ACPI_STATUS (Status); } /* This scope complete? */ if (AcpiPsHasCompletedScope (&(WalkState->ParserState))) { AcpiPsPopScope (&(WalkState->ParserState), Op, &WalkState->ArgTypes, &WalkState->ArgCount); ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Popped scope, Op=%p\n", *Op)); } else { *Op = NULL; } return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: AcpiPsCompleteFinalOp * * PARAMETERS: WalkState - Current state * Op - Current Op * Status - Current parse status before complete last * Op * * RETURN: Status * * DESCRIPTION: Complete last Op. * ******************************************************************************/ ACPI_STATUS AcpiPsCompleteFinalOp ( ACPI_WALK_STATE *WalkState, ACPI_PARSE_OBJECT *Op, ACPI_STATUS Status) { ACPI_STATUS Status2; ACPI_FUNCTION_TRACE_PTR (PsCompleteFinalOp, WalkState); /* * Complete the last Op (if not completed), and clear the scope stack. * It is easily possible to end an AML "package" with an unbounded number * of open scopes (such as when several ASL blocks are closed with * sequential closing braces). We want to terminate each one cleanly. */ ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "AML package complete at Op %p\n", Op)); do { if (Op) { if (WalkState->AscendingCallback != NULL) { WalkState->Op = Op; WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); WalkState->Opcode = Op->Common.AmlOpcode; Status = WalkState->AscendingCallback (WalkState); Status = AcpiPsNextParseState (WalkState, Op, Status); if (Status == AE_CTRL_PENDING) { Status = AcpiPsCompleteOp (WalkState, &Op, AE_OK); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } if (Status == AE_CTRL_TERMINATE) { Status = AE_OK; /* Clean up */ do { if (Op) { Status2 = AcpiPsCompleteThisOp (WalkState, Op); if (ACPI_FAILURE (Status2)) { return_ACPI_STATUS (Status2); } } AcpiPsPopScope (&(WalkState->ParserState), &Op, &WalkState->ArgTypes, &WalkState->ArgCount); } while (Op); return_ACPI_STATUS (Status); } else if (ACPI_FAILURE (Status)) { /* First error is most important */ (void) AcpiPsCompleteThisOp (WalkState, Op); return_ACPI_STATUS (Status); } } Status2 = AcpiPsCompleteThisOp (WalkState, Op); if (ACPI_FAILURE (Status2)) { return_ACPI_STATUS (Status2); } } AcpiPsPopScope (&(WalkState->ParserState), &Op, &WalkState->ArgTypes, &WalkState->ArgCount); } while (Op); return_ACPI_STATUS (Status); }