| 0,0 → 1,1340 |
|---|
| /****************************************************************************** |
| * |
| * Module Name: psloop - Main AML parse loop |
| * |
| *****************************************************************************/ |
| |
| /****************************************************************************** |
| * |
| * 1. Copyright Notice |
| * |
| * Some or all of this work - Copyright (c) 1999 - 2010, 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. |
| * |
| *****************************************************************************/ |
| |
| |
| /* |
| * Parse the AML and build an operation tree as most interpreters, (such as |
| * Perl) do. Parsing is done by hand rather than with a YACC generated parser |
| * to tightly constrain stack and dynamic memory usage. Parsing is kept |
| * flexible and the code fairly compact by parsing based on a list of AML |
| * opcode templates in AmlOpInfo[]. |
| */ |
| |
| #include "acpi.h" |
| #include "accommon.h" |
| #include "acparser.h" |
| #include "acdispat.h" |
| #include "amlcode.h" |
| |
| #define _COMPONENT ACPI_PARSER |
| ACPI_MODULE_NAME ("psloop") |
| |
| static UINT32 AcpiGbl_Depth = 0; |
| |
| |
| /* Local prototypes */ |
| |
| static ACPI_STATUS |
| AcpiPsGetAmlOpcode ( |
| ACPI_WALK_STATE *WalkState); |
| |
| static ACPI_STATUS |
| AcpiPsBuildNamedOp ( |
| ACPI_WALK_STATE *WalkState, |
| UINT8 *AmlOpStart, |
| ACPI_PARSE_OBJECT *UnnamedOp, |
| ACPI_PARSE_OBJECT **Op); |
| |
| static ACPI_STATUS |
| AcpiPsCreateOp ( |
| ACPI_WALK_STATE *WalkState, |
| UINT8 *AmlOpStart, |
| ACPI_PARSE_OBJECT **NewOp); |
| |
| static ACPI_STATUS |
| AcpiPsGetArguments ( |
| ACPI_WALK_STATE *WalkState, |
| UINT8 *AmlOpStart, |
| ACPI_PARSE_OBJECT *Op); |
| |
| static ACPI_STATUS |
| AcpiPsCompleteOp ( |
| ACPI_WALK_STATE *WalkState, |
| ACPI_PARSE_OBJECT **Op, |
| ACPI_STATUS Status); |
| |
| static ACPI_STATUS |
| AcpiPsCompleteFinalOp ( |
| ACPI_WALK_STATE *WalkState, |
| ACPI_PARSE_OBJECT *Op, |
| ACPI_STATUS Status); |
| |
| static void |
| AcpiPsLinkModuleCode ( |
| ACPI_PARSE_OBJECT *ParentOp, |
| UINT8 *AmlStart, |
| UINT32 AmlLength, |
| ACPI_OWNER_ID OwnerId); |
| |
| |
| /******************************************************************************* |
| * |
| * 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_FUNCTION_TRACE_PTR (PsGetAmlOpcode, WalkState); |
| |
| |
| WalkState->AmlOffset = (UINT32) ACPI_PTR_DIFF (WalkState->ParserState.Aml, |
| WalkState->ParserState.AmlStart); |
| 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. Just skip unknown opcodes */ |
| |
| ACPI_ERROR ((AE_INFO, |
| "Found unknown opcode 0x%X at AML address %p offset 0x%X, ignoring", |
| WalkState->Opcode, WalkState->ParserState.Aml, WalkState->AmlOffset)); |
| |
| ACPI_DUMP_BUFFER (WalkState->ParserState.Aml, 128); |
| |
| /* Assume one-byte bad opcode */ |
| |
| 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 |
| * |
| ******************************************************************************/ |
| |
| static 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)) |
| { |
| 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); |
| } |
| |
| /* |
| * 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)) |
| { |
| 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) |
| { |
| return_ACPI_STATUS (AE_CTRL_PARSE_PENDING); |
| } |
| return_ACPI_STATUS (Status); |
| } |
| |
| AcpiPsAppendArg (*Op, UnnamedOp->Common.Value.Arg); |
| AcpiGbl_Depth++; |
| |
| 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 |
| * |
| ******************************************************************************/ |
| |
| static 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); |
| } |
| |
| /* Create Op structure and append to parent's argument list */ |
| |
| WalkState->OpInfo = AcpiPsGetOpcodeInfo (WalkState->Opcode); |
| Op = AcpiPsAllocOp (WalkState->Opcode); |
| if (!Op) |
| { |
| return_ACPI_STATUS (AE_NO_MEMORY); |
| } |
| |
| if (WalkState->OpInfo->Flags & AML_NAMED) |
| { |
| Status = AcpiPsBuildNamedOp (WalkState, AmlOpStart, Op, &NamedOp); |
| AcpiPsFreeOp (Op); |
| 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; |
| } |
| } |
| else if (ParentScope->Common.AmlOpcode == AML_INCREMENT_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: AcpiPsGetArguments |
| * |
| * PARAMETERS: WalkState - Current state |
| * AmlOpStart - Op start in AML |
| * Op - Current Op |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Get arguments for passed Op. |
| * |
| ******************************************************************************/ |
| |
| static ACPI_STATUS |
| AcpiPsGetArguments ( |
| ACPI_WALK_STATE *WalkState, |
| UINT8 *AmlOpStart, |
| ACPI_PARSE_OBJECT *Op) |
| { |
| ACPI_STATUS Status = AE_OK; |
| ACPI_PARSE_OBJECT *Arg = NULL; |
| const ACPI_OPCODE_INFO *OpInfo; |
| |
| |
| ACPI_FUNCTION_TRACE_PTR (PsGetArguments, WalkState); |
| |
| |
| switch (Op->Common.AmlOpcode) |
| { |
| case AML_BYTE_OP: /* AML_BYTEDATA_ARG */ |
| case AML_WORD_OP: /* AML_WORDDATA_ARG */ |
| case AML_DWORD_OP: /* AML_DWORDATA_ARG */ |
| case AML_QWORD_OP: /* AML_QWORDATA_ARG */ |
| case AML_STRING_OP: /* AML_ASCIICHARLIST_ARG */ |
| |
| /* Fill in constant or string argument directly */ |
| |
| AcpiPsGetNextSimpleArg (&(WalkState->ParserState), |
| GET_CURRENT_ARG_TYPE (WalkState->ArgTypes), Op); |
| break; |
| |
| case AML_INT_NAMEPATH_OP: /* AML_NAMESTRING_ARG */ |
| |
| Status = AcpiPsGetNextNamepath (WalkState, &(WalkState->ParserState), Op, 1); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| WalkState->ArgTypes = 0; |
| break; |
| |
| default: |
| /* |
| * Op is not a constant or string, append each argument to the Op |
| */ |
| while (GET_CURRENT_ARG_TYPE (WalkState->ArgTypes) && !WalkState->ArgCount) |
| { |
| WalkState->AmlOffset = (UINT32) ACPI_PTR_DIFF (WalkState->ParserState.Aml, |
| WalkState->ParserState.AmlStart); |
| |
| Status = AcpiPsGetNextArg (WalkState, &(WalkState->ParserState), |
| GET_CURRENT_ARG_TYPE (WalkState->ArgTypes), &Arg); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| if (Arg) |
| { |
| Arg->Common.AmlOffset = WalkState->AmlOffset; |
| AcpiPsAppendArg (Op, Arg); |
| } |
| |
| INCREMENT_ARG_LIST (WalkState->ArgTypes); |
| } |
| |
| |
| /* |
| * Handle executable code at "module-level". This refers to |
| * executable opcodes that appear outside of any control method. |
| */ |
| if ((WalkState->PassNumber <= ACPI_IMODE_LOAD_PASS2) && |
| ((WalkState->ParseFlags & ACPI_PARSE_DISASSEMBLE) == 0)) |
| { |
| /* |
| * We want to skip If/Else/While constructs during Pass1 because we |
| * want to actually conditionally execute the code during Pass2. |
| * |
| * Except for disassembly, where we always want to walk the |
| * If/Else/While packages |
| */ |
| switch (Op->Common.AmlOpcode) |
| { |
| case AML_IF_OP: |
| case AML_ELSE_OP: |
| case AML_WHILE_OP: |
| |
| /* |
| * Currently supported module-level opcodes are: |
| * IF/ELSE/WHILE. These appear to be the most common, |
| * and easiest to support since they open an AML |
| * package. |
| */ |
| if (WalkState->PassNumber == ACPI_IMODE_LOAD_PASS1) |
| { |
| AcpiPsLinkModuleCode (Op->Common.Parent, AmlOpStart, |
| (UINT32) (WalkState->ParserState.PkgEnd - AmlOpStart), |
| WalkState->OwnerId); |
| } |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, |
| "Pass1: Skipping an If/Else/While body\n")); |
| |
| /* Skip body of if/else/while in pass 1 */ |
| |
| WalkState->ParserState.Aml = WalkState->ParserState.PkgEnd; |
| WalkState->ArgCount = 0; |
| break; |
| |
| default: |
| /* |
| * Check for an unsupported executable opcode at module |
| * level. We must be in PASS1, the parent must be a SCOPE, |
| * The opcode class must be EXECUTE, and the opcode must |
| * not be an argument to another opcode. |
| */ |
| if ((WalkState->PassNumber == ACPI_IMODE_LOAD_PASS1) && |
| (Op->Common.Parent->Common.AmlOpcode == AML_SCOPE_OP)) |
| { |
| OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); |
| if ((OpInfo->Class == AML_CLASS_EXECUTE) && |
| (!Arg)) |
| { |
| ACPI_WARNING ((AE_INFO, |
| "Detected an unsupported executable opcode " |
| "at module-level: [0x%.4X] at table offset 0x%.4X", |
| Op->Common.AmlOpcode, |
| (UINT32) (ACPI_PTR_DIFF (AmlOpStart, |
| WalkState->ParserState.AmlStart) + |
| sizeof (ACPI_TABLE_HEADER)))); |
| } |
| } |
| break; |
| } |
| } |
| |
| /* Special processing for certain opcodes */ |
| |
| switch (Op->Common.AmlOpcode) |
| { |
| case AML_METHOD_OP: |
| /* |
| * Skip parsing of control method because we don't have enough |
| * info in the first pass to parse it correctly. |
| * |
| * Save the length and address of the body |
| */ |
| Op->Named.Data = WalkState->ParserState.Aml; |
| Op->Named.Length = (UINT32) |
| (WalkState->ParserState.PkgEnd - WalkState->ParserState.Aml); |
| |
| /* Skip body of method */ |
| |
| WalkState->ParserState.Aml = WalkState->ParserState.PkgEnd; |
| WalkState->ArgCount = 0; |
| break; |
| |
| case AML_BUFFER_OP: |
| case AML_PACKAGE_OP: |
| case AML_VAR_PACKAGE_OP: |
| |
| if ((Op->Common.Parent) && |
| (Op->Common.Parent->Common.AmlOpcode == AML_NAME_OP) && |
| (WalkState->PassNumber <= ACPI_IMODE_LOAD_PASS2)) |
| { |
| /* |
| * Skip parsing of Buffers and Packages because we don't have |
| * enough info in the first pass to parse them correctly. |
| */ |
| Op->Named.Data = AmlOpStart; |
| Op->Named.Length = (UINT32) |
| (WalkState->ParserState.PkgEnd - AmlOpStart); |
| |
| /* Skip body */ |
| |
| WalkState->ParserState.Aml = WalkState->ParserState.PkgEnd; |
| WalkState->ArgCount = 0; |
| } |
| break; |
| |
| case AML_WHILE_OP: |
| |
| if (WalkState->ControlState) |
| { |
| WalkState->ControlState->Control.PackageEnd = |
| WalkState->ParserState.PkgEnd; |
| } |
| break; |
| |
| default: |
| |
| /* No action for all other opcodes */ |
| break; |
| } |
| |
| break; |
| } |
| |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiPsLinkModuleCode |
| * |
| * PARAMETERS: ParentOp - Parent parser op |
| * AmlStart - Pointer to the AML |
| * AmlLength - Length of executable AML |
| * OwnerId - OwnerId of module level code |
| * |
| * RETURN: None. |
| * |
| * DESCRIPTION: Wrap the module-level code with a method object and link the |
| * object to the global list. Note, the mutex field of the method |
| * object is used to link multiple module-level code objects. |
| * |
| ******************************************************************************/ |
| |
| static void |
| AcpiPsLinkModuleCode ( |
| ACPI_PARSE_OBJECT *ParentOp, |
| UINT8 *AmlStart, |
| UINT32 AmlLength, |
| ACPI_OWNER_ID OwnerId) |
| { |
| ACPI_OPERAND_OBJECT *Prev; |
| ACPI_OPERAND_OBJECT *Next; |
| ACPI_OPERAND_OBJECT *MethodObj; |
| ACPI_NAMESPACE_NODE *ParentNode; |
| |
| |
| /* Get the tail of the list */ |
| |
| Prev = Next = AcpiGbl_ModuleCodeList; |
| while (Next) |
| { |
| Prev = Next; |
| Next = Next->Method.Mutex; |
| } |
| |
| /* |
| * Insert the module level code into the list. Merge it if it is |
| * adjacent to the previous element. |
| */ |
| if (!Prev || |
| ((Prev->Method.AmlStart + Prev->Method.AmlLength) != AmlStart)) |
| { |
| /* Create, initialize, and link a new temporary method object */ |
| |
| MethodObj = AcpiUtCreateInternalObject (ACPI_TYPE_METHOD); |
| if (!MethodObj) |
| { |
| return; |
| } |
| |
| if (ParentOp->Common.Node) |
| { |
| ParentNode = ParentOp->Common.Node; |
| } |
| else |
| { |
| ParentNode = AcpiGbl_RootNode; |
| } |
| |
| MethodObj->Method.AmlStart = AmlStart; |
| MethodObj->Method.AmlLength = AmlLength; |
| MethodObj->Method.OwnerId = OwnerId; |
| MethodObj->Method.Flags |= AOPOBJ_MODULE_LEVEL; |
| |
| /* |
| * Save the parent node in NextObject. This is cheating, but we |
| * don't want to expand the method object. |
| */ |
| MethodObj->Method.NextObject = |
| ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, ParentNode); |
| |
| if (!Prev) |
| { |
| AcpiGbl_ModuleCodeList = MethodObj; |
| } |
| else |
| { |
| Prev->Method.Mutex = MethodObj; |
| } |
| } |
| else |
| { |
| Prev->Method.AmlLength += AmlLength; |
| } |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiPsCompleteOp |
| * |
| * PARAMETERS: WalkState - Current state |
| * Op - Returned Op |
| * Status - Parse status before complete Op |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Complete Op |
| * |
| ******************************************************************************/ |
| |
| static 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); |
| Status = AcpiPsNextParseState (WalkState, *Op, Status); |
| |
| Status2 = AcpiPsCompleteThisOp (WalkState, *Op); |
| if (ACPI_FAILURE (Status2)) |
| { |
| return_ACPI_STATUS (Status2); |
| } |
| } |
| |
| Status = AE_OK; |
| 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); |
| Status = AcpiPsNextParseState (WalkState, *Op, Status); |
| |
| Status2 = AcpiPsCompleteThisOp (WalkState, *Op); |
| if (ACPI_FAILURE (Status2)) |
| { |
| return_ACPI_STATUS (Status2); |
| } |
| |
| Status = AE_OK; |
| 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) |
| { |
| 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; |
| 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. |
| * |
| ******************************************************************************/ |
| |
| static 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); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiPsParseLoop |
| * |
| * PARAMETERS: WalkState - Current state |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Parse AML (pointed to by the current parser state) and return |
| * a tree of ops. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiPsParseLoop ( |
| ACPI_WALK_STATE *WalkState) |
| { |
| ACPI_STATUS Status = AE_OK; |
| ACPI_PARSE_OBJECT *Op = NULL; /* current op */ |
| ACPI_PARSE_STATE *ParserState; |
| UINT8 *AmlOpStart = NULL; |
| |
| |
| ACPI_FUNCTION_TRACE_PTR (PsParseLoop, WalkState); |
| |
| |
| if (WalkState->DescendingCallback == NULL) |
| { |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| |
| ParserState = &WalkState->ParserState; |
| WalkState->ArgTypes = 0; |
| |
| #if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY)) |
| |
| if (WalkState->WalkType & ACPI_WALK_METHOD_RESTART) |
| { |
| /* We are restarting a preempted control method */ |
| |
| if (AcpiPsHasCompletedScope (ParserState)) |
| { |
| /* |
| * We must check if a predicate to an IF or WHILE statement |
| * was just completed |
| */ |
| if ((ParserState->Scope->ParseScope.Op) && |
| ((ParserState->Scope->ParseScope.Op->Common.AmlOpcode == AML_IF_OP) || |
| (ParserState->Scope->ParseScope.Op->Common.AmlOpcode == AML_WHILE_OP)) && |
| (WalkState->ControlState) && |
| (WalkState->ControlState->Common.State == |
| ACPI_CONTROL_PREDICATE_EXECUTING)) |
| { |
| /* |
| * A predicate was just completed, get the value of the |
| * predicate and branch based on that value |
| */ |
| WalkState->Op = NULL; |
| Status = AcpiDsGetPredicateValue (WalkState, ACPI_TO_POINTER (TRUE)); |
| if (ACPI_FAILURE (Status) && |
| ((Status & AE_CODE_MASK) != AE_CODE_CONTROL)) |
| { |
| if (Status == AE_AML_NO_RETURN_VALUE) |
| { |
| ACPI_EXCEPTION ((AE_INFO, Status, |
| "Invoked method did not return a value")); |
| } |
| |
| ACPI_EXCEPTION ((AE_INFO, Status, "GetPredicate Failed")); |
| return_ACPI_STATUS (Status); |
| } |
| |
| Status = AcpiPsNextParseState (WalkState, Op, Status); |
| } |
| |
| AcpiPsPopScope (ParserState, &Op, |
| &WalkState->ArgTypes, &WalkState->ArgCount); |
| ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Popped scope, Op=%p\n", Op)); |
| } |
| else if (WalkState->PrevOp) |
| { |
| /* We were in the middle of an op */ |
| |
| Op = WalkState->PrevOp; |
| WalkState->ArgTypes = WalkState->PrevArgTypes; |
| } |
| } |
| #endif |
| |
| /* Iterative parsing loop, while there is more AML to process: */ |
| |
| while ((ParserState->Aml < ParserState->AmlEnd) || (Op)) |
| { |
| AmlOpStart = ParserState->Aml; |
| if (!Op) |
| { |
| Status = AcpiPsCreateOp (WalkState, AmlOpStart, &Op); |
| if (ACPI_FAILURE (Status)) |
| { |
| if (Status == AE_CTRL_PARSE_CONTINUE) |
| { |
| continue; |
| } |
| |
| if (Status == AE_CTRL_PARSE_PENDING) |
| { |
| Status = AE_OK; |
| } |
| |
| Status = AcpiPsCompleteOp (WalkState, &Op, Status); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| continue; |
| } |
| |
| Op->Common.AmlOffset = WalkState->AmlOffset; |
| |
| if (WalkState->OpInfo) |
| { |
| ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, |
| "Opcode %4.4X [%s] Op %p Aml %p AmlOffset %5.5X\n", |
| (UINT32) Op->Common.AmlOpcode, WalkState->OpInfo->Name, |
| Op, ParserState->Aml, Op->Common.AmlOffset)); |
| } |
| } |
| |
| |
| /* |
| * Start ArgCount at zero because we don't know if there are |
| * any args yet |
| */ |
| WalkState->ArgCount = 0; |
| |
| /* Are there any arguments that must be processed? */ |
| |
| if (WalkState->ArgTypes) |
| { |
| /* Get arguments */ |
| |
| Status = AcpiPsGetArguments (WalkState, AmlOpStart, Op); |
| if (ACPI_FAILURE (Status)) |
| { |
| Status = AcpiPsCompleteOp (WalkState, &Op, Status); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| continue; |
| } |
| } |
| |
| /* Check for arguments that need to be processed */ |
| |
| if (WalkState->ArgCount) |
| { |
| /* |
| * There are arguments (complex ones), push Op and |
| * prepare for argument |
| */ |
| Status = AcpiPsPushScope (ParserState, Op, |
| WalkState->ArgTypes, WalkState->ArgCount); |
| if (ACPI_FAILURE (Status)) |
| { |
| Status = AcpiPsCompleteOp (WalkState, &Op, Status); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| continue; |
| } |
| |
| Op = NULL; |
| continue; |
| } |
| |
| /* |
| * All arguments have been processed -- Op is complete, |
| * prepare for next |
| */ |
| WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); |
| if (WalkState->OpInfo->Flags & AML_NAMED) |
| { |
| if (AcpiGbl_Depth) |
| { |
| AcpiGbl_Depth--; |
| } |
| |
| if (Op->Common.AmlOpcode == AML_REGION_OP || |
| Op->Common.AmlOpcode == AML_DATA_REGION_OP) |
| { |
| /* |
| * Skip parsing of control method or opregion body, |
| * because we don't have enough info in the first pass |
| * to parse them correctly. |
| * |
| * Completed parsing an OpRegion declaration, we now |
| * know the length. |
| */ |
| Op->Named.Length = (UINT32) (ParserState->Aml - Op->Named.Data); |
| } |
| } |
| |
| if (WalkState->OpInfo->Flags & AML_CREATE) |
| { |
| /* |
| * Backup to beginning of CreateXXXfield declaration (1 for |
| * Opcode) |
| * |
| * BodyLength is unknown until we parse the body |
| */ |
| Op->Named.Length = (UINT32) (ParserState->Aml - Op->Named.Data); |
| } |
| |
| if (Op->Common.AmlOpcode == AML_BANK_FIELD_OP) |
| { |
| /* |
| * Backup to beginning of BankField declaration |
| * |
| * BodyLength is unknown until we parse the body |
| */ |
| Op->Named.Length = (UINT32) (ParserState->Aml - Op->Named.Data); |
| } |
| |
| /* This op complete, notify the dispatcher */ |
| |
| if (WalkState->AscendingCallback != NULL) |
| { |
| WalkState->Op = Op; |
| WalkState->Opcode = Op->Common.AmlOpcode; |
| |
| Status = WalkState->AscendingCallback (WalkState); |
| Status = AcpiPsNextParseState (WalkState, Op, Status); |
| if (Status == AE_CTRL_PENDING) |
| { |
| Status = AE_OK; |
| } |
| } |
| |
| Status = AcpiPsCompleteOp (WalkState, &Op, Status); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| } /* while ParserState->Aml */ |
| |
| Status = AcpiPsCompleteFinalOp (WalkState, Op, Status); |
| return_ACPI_STATUS (Status); |
| } |
| |