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Diffstat (limited to 'sys/contrib/dev/acpica/psparse.c')
| -rw-r--r-- | sys/contrib/dev/acpica/psparse.c | 1373 |
1 files changed, 0 insertions, 1373 deletions
diff --git a/sys/contrib/dev/acpica/psparse.c b/sys/contrib/dev/acpica/psparse.c deleted file mode 100644 index dc6c729a73ac..000000000000 --- a/sys/contrib/dev/acpica/psparse.c +++ /dev/null @@ -1,1373 +0,0 @@ -/****************************************************************************** - * - * Module Name: psparse - Parser top level AML parse routines - * $Revision: 139 $ - * - *****************************************************************************/ - -/****************************************************************************** - * - * 1. Copyright Notice - * - * Some or all of this work - Copyright (c) 1999 - 2003, 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, - * like Perl, do. Parsing is done by hand rather than with a YACC - * generated parser to tightly constrain stack and dynamic memory - * usage. At the same time, 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 "acparser.h" -#include "acdispat.h" -#include "amlcode.h" -#include "acnamesp.h" -#include "acinterp.h" - -#define _COMPONENT ACPI_PARSER - ACPI_MODULE_NAME ("psparse") - - -static UINT32 AcpiGbl_Depth = 0; - - -/******************************************************************************* - * - * FUNCTION: AcpiPsGetOpcodeSize - * - * PARAMETERS: Opcode - An AML opcode - * - * RETURN: Size of the opcode, in bytes (1 or 2) - * - * DESCRIPTION: Get the size of the current opcode. - * - ******************************************************************************/ - -UINT32 -AcpiPsGetOpcodeSize ( - UINT32 Opcode) -{ - - /* Extended (2-byte) opcode if > 255 */ - - if (Opcode > 0x00FF) - { - return (2); - } - - /* Otherwise, just a single byte opcode */ - - return (1); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiPsPeekOpcode - * - * PARAMETERS: ParserState - A parser state object - * - * RETURN: Status - * - * DESCRIPTION: Get next AML opcode (without incrementing AML pointer) - * - ******************************************************************************/ - -UINT16 -AcpiPsPeekOpcode ( - ACPI_PARSE_STATE *ParserState) -{ - UINT8 *Aml; - UINT16 Opcode; - - - Aml = ParserState->Aml; - Opcode = (UINT16) ACPI_GET8 (Aml); - - - if (Opcode == AML_EXTOP) - { - /* Extended opcode */ - - Aml++; - Opcode = (UINT16) ((Opcode << 8) | ACPI_GET8 (Aml)); - } - - return (Opcode); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiPsCompleteThisOp - * - * PARAMETERS: WalkState - Current State - * Op - Op to complete - * - * RETURN: None. - * - * DESCRIPTION: Perform any cleanup at the completion of an Op. - * - ******************************************************************************/ - -void -AcpiPsCompleteThisOp ( - ACPI_WALK_STATE *WalkState, - ACPI_PARSE_OBJECT *Op) -{ - ACPI_PARSE_OBJECT *Prev; - ACPI_PARSE_OBJECT *Next; - const ACPI_OPCODE_INFO *ParentInfo; - ACPI_PARSE_OBJECT *ReplacementOp = NULL; - - - ACPI_FUNCTION_TRACE_PTR ("PsCompleteThisOp", Op); - - - /* Check for null Op, can happen if AML code is corrupt */ - - if (!Op) - { - return_VOID; - } - - /* Delete this op and the subtree below it if asked to */ - - if (((WalkState->ParseFlags & ACPI_PARSE_TREE_MASK) == ACPI_PARSE_DELETE_TREE) && - (WalkState->OpInfo->Class != AML_CLASS_ARGUMENT)) - { - /* Make sure that we only delete this subtree */ - - if (Op->Common.Parent) - { - /* - * Check if we need to replace the operator and its subtree - * with a return value op (placeholder op) - */ - ParentInfo = AcpiPsGetOpcodeInfo (Op->Common.Parent->Common.AmlOpcode); - - switch (ParentInfo->Class) - { - case AML_CLASS_CONTROL: - break; - - case AML_CLASS_CREATE: - - /* - * These opcodes contain TermArg operands. The current - * op must be replaced by a placeholder return op - */ - ReplacementOp = AcpiPsAllocOp (AML_INT_RETURN_VALUE_OP); - if (!ReplacementOp) - { - return_VOID; - } - break; - - case AML_CLASS_NAMED_OBJECT: - - /* - * These opcodes contain TermArg operands. The current - * op must be replaced by a placeholder return op - */ - if ((Op->Common.Parent->Common.AmlOpcode == AML_REGION_OP) || - (Op->Common.Parent->Common.AmlOpcode == AML_DATA_REGION_OP) || - (Op->Common.Parent->Common.AmlOpcode == AML_BUFFER_OP) || - (Op->Common.Parent->Common.AmlOpcode == AML_PACKAGE_OP) || - (Op->Common.Parent->Common.AmlOpcode == AML_VAR_PACKAGE_OP)) - { - ReplacementOp = AcpiPsAllocOp (AML_INT_RETURN_VALUE_OP); - if (!ReplacementOp) - { - return_VOID; - } - } - - if ((Op->Common.Parent->Common.AmlOpcode == AML_NAME_OP) && - (WalkState->DescendingCallback != AcpiDsExecBeginOp)) - - { - if ((Op->Common.AmlOpcode == AML_BUFFER_OP) || - (Op->Common.AmlOpcode == AML_PACKAGE_OP) || - (Op->Common.AmlOpcode == AML_VAR_PACKAGE_OP)) - { - ReplacementOp = AcpiPsAllocOp (Op->Common.AmlOpcode); - if (!ReplacementOp) - { - return_VOID; - } - - ReplacementOp->Named.Data = Op->Named.Data; - ReplacementOp->Named.Length = Op->Named.Length; - } - } - break; - - default: - ReplacementOp = AcpiPsAllocOp (AML_INT_RETURN_VALUE_OP); - if (!ReplacementOp) - { - return_VOID; - } - } - - /* We must unlink this op from the parent tree */ - - Prev = Op->Common.Parent->Common.Value.Arg; - if (Prev == Op) - { - /* This op is the first in the list */ - - if (ReplacementOp) - { - ReplacementOp->Common.Parent = Op->Common.Parent; - ReplacementOp->Common.Value.Arg = NULL; - ReplacementOp->Common.Node = Op->Common.Node; - Op->Common.Parent->Common.Value.Arg = ReplacementOp; - ReplacementOp->Common.Next = Op->Common.Next; - } - else - { - Op->Common.Parent->Common.Value.Arg = Op->Common.Next; - } - } - - /* Search the parent list */ - - else while (Prev) - { - /* Traverse all siblings in the parent's argument list */ - - Next = Prev->Common.Next; - if (Next == Op) - { - if (ReplacementOp) - { - ReplacementOp->Common.Parent = Op->Common.Parent; - ReplacementOp->Common.Value.Arg = NULL; - ReplacementOp->Common.Node = Op->Common.Node; - Prev->Common.Next = ReplacementOp; - ReplacementOp->Common.Next = Op->Common.Next; - Next = NULL; - } - else - { - Prev->Common.Next = Op->Common.Next; - Next = NULL; - } - } - - Prev = Next; - } - } - - /* Now we can actually delete the subtree rooted at op */ - - AcpiPsDeleteParseTree (Op); - - return_VOID; - } - - return_VOID; -} - - -/******************************************************************************* - * - * FUNCTION: AcpiPsNextParseState - * - * PARAMETERS: ParserState - Current parser state object - * - * RETURN: Status - * - * DESCRIPTION: Update the parser state based upon the return exception from - * the parser callback. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiPsNextParseState ( - ACPI_WALK_STATE *WalkState, - ACPI_PARSE_OBJECT *Op, - ACPI_STATUS CallbackStatus) -{ - ACPI_PARSE_STATE *ParserState = &WalkState->ParserState; - ACPI_STATUS Status = AE_CTRL_PENDING; - - - ACPI_FUNCTION_TRACE_PTR ("PsNextParseState", Op); - - - switch (CallbackStatus) - { - case AE_CTRL_TERMINATE: - - /* - * A control method was terminated via a RETURN statement. - * The walk of this method is complete. - */ - ParserState->Aml = ParserState->AmlEnd; - Status = AE_CTRL_TERMINATE; - break; - - - case AE_CTRL_BREAK: - - ParserState->Aml = WalkState->AmlLastWhile; - WalkState->ControlState->Common.Value = FALSE; - Status = AE_CTRL_BREAK; - break; - - case AE_CTRL_CONTINUE: - - - ParserState->Aml = WalkState->AmlLastWhile; - Status = AE_CTRL_CONTINUE; - break; - - case AE_CTRL_PENDING: - - ParserState->Aml = WalkState->AmlLastWhile; - break; - -#if 0 - case AE_CTRL_SKIP: - - ParserState->Aml = ParserState->Scope->ParseScope.PkgEnd; - Status = AE_OK; - break; -#endif - - case AE_CTRL_TRUE: - - /* - * Predicate of an IF was true, and we are at the matching ELSE. - * Just close out this package - */ - ParserState->Aml = AcpiPsGetNextPackageEnd (ParserState); - break; - - - case AE_CTRL_FALSE: - - /* - * Either an IF/WHILE Predicate was false or we encountered a BREAK - * opcode. In both cases, we do not execute the rest of the - * package; We simply close out the parent (finishing the walk of - * this branch of the tree) and continue execution at the parent - * level. - */ - ParserState->Aml = ParserState->Scope->ParseScope.PkgEnd; - - /* In the case of a BREAK, just force a predicate (if any) to FALSE */ - - WalkState->ControlState->Common.Value = FALSE; - Status = AE_CTRL_END; - break; - - - case AE_CTRL_TRANSFER: - - /* - * A method call (invocation) -- transfer control - */ - Status = AE_CTRL_TRANSFER; - WalkState->PrevOp = Op; - WalkState->MethodCallOp = Op; - WalkState->MethodCallNode = (Op->Common.Value.Arg)->Common.Node; - - /* Will return value (if any) be used by the caller? */ - - WalkState->ReturnUsed = AcpiDsIsResultUsed (Op, WalkState); - break; - - - default: - Status = CallbackStatus; - if ((CallbackStatus & AE_CODE_MASK) == AE_CODE_CONTROL) - { - Status = AE_OK; - } - break; - } - - return_ACPI_STATUS (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiPsParseLoop - * - * PARAMETERS: ParserState - Current parser state object - * - * 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_OBJECT *Arg = NULL; - ACPI_PARSE_OBJECT PreOp; - 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_DEBUG_PRINT ((ACPI_DB_ERROR, - "Invoked method did not return a value, %s\n", - AcpiFormatException (Status))); - - } - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "GetPredicate Failed, %s\n", - AcpiFormatException (Status))); - 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) - { - /* Get the next opcode from the AML stream */ - - WalkState->AmlOffset = ACPI_PTR_DIFF (ParserState->Aml, - ParserState->AmlStart); - WalkState->Opcode = AcpiPsPeekOpcode (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_DEBUG_PRINT ((ACPI_DB_ERROR, - "Found unknown opcode %X at AML address %p offset %X, ignoring\n", - WalkState->Opcode, ParserState->Aml, WalkState->AmlOffset)); - - ACPI_DUMP_BUFFER (ParserState->Aml, 128); - - /* Assume one-byte bad opcode */ - - ParserState->Aml++; - continue; - - default: - - /* Found opcode info, this is a normal opcode */ - - ParserState->Aml += AcpiPsGetOpcodeSize (WalkState->Opcode); - WalkState->ArgTypes = WalkState->OpInfo->ParseArgs; - break; - } - - /* Create Op structure and append to parent's argument list */ - - if (WalkState->OpInfo->Flags & AML_NAMED) - { - PreOp.Common.Value.Arg = NULL; - PreOp.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, ParserState, - GET_CURRENT_ARG_TYPE (WalkState->ArgTypes), &Arg); - if (ACPI_FAILURE (Status)) - { - goto CloseThisOp; - } - - AcpiPsAppendArg (&PreOp, 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_DEBUG_PRINT ((ACPI_DB_ERROR, "During name lookup/catalog, %s\n", - AcpiFormatException (Status))); - goto CloseThisOp; - } - - if (Op == NULL) - { - continue; - } - - Status = AcpiPsNextParseState (WalkState, Op, Status); - if (Status == AE_CTRL_PENDING) - { - Status = AE_OK; - goto CloseThisOp; - } - - if (ACPI_FAILURE (Status)) - { - goto CloseThisOp; - } - - AcpiPsAppendArg (Op, PreOp.Common.Value.Arg); - AcpiGbl_Depth++; - - if (Op->Common.AmlOpcode == AML_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; - } - } - else - { - /* Not a named opcode, just allocate Op and append to parent */ - - WalkState->OpInfo = AcpiPsGetOpcodeInfo (WalkState->Opcode); - Op = AcpiPsAllocOp (WalkState->Opcode); - if (!Op) - { - return_ACPI_STATUS (AE_NO_MEMORY); - } - - 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; - } - - AcpiPsAppendArg (AcpiPsGetParentScope (ParserState), Op); - - if ((WalkState->DescendingCallback != NULL)) - { - /* - * Find the object. This will either insert the object into - * the namespace or simply look it up - */ - WalkState->Op = Op; - - Status = WalkState->DescendingCallback (WalkState, &Op); - Status = AcpiPsNextParseState (WalkState, Op, Status); - if (Status == AE_CTRL_PENDING) - { - Status = AE_OK; - goto CloseThisOp; - } - - if (ACPI_FAILURE (Status)) - { - goto CloseThisOp; - } - } - } - - 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; - - if (WalkState->ArgTypes) /* Are there any arguments that must be processed? */ - { - /* Get arguments */ - - 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 (ParserState, - GET_CURRENT_ARG_TYPE (WalkState->ArgTypes), Op); - break; - - case AML_INT_NAMEPATH_OP: /* AML_NAMESTRING_ARG */ - - Status = AcpiPsGetNextNamepath (WalkState, ParserState, Op, 1); - if (ACPI_FAILURE (Status)) - { - goto CloseThisOp; - } - - WalkState->ArgTypes = 0; - break; - - - default: - - /* Op is not a constant or string, append each argument */ - - while (GET_CURRENT_ARG_TYPE (WalkState->ArgTypes) && - !WalkState->ArgCount) - { - WalkState->AmlOffset = ACPI_PTR_DIFF (ParserState->Aml, - ParserState->AmlStart); - Status = AcpiPsGetNextArg (WalkState, ParserState, - GET_CURRENT_ARG_TYPE (WalkState->ArgTypes), &Arg); - if (ACPI_FAILURE (Status)) - { - goto CloseThisOp; - } - - if (Arg) - { - Arg->Common.AmlOffset = WalkState->AmlOffset; - AcpiPsAppendArg (Op, Arg); - } - INCREMENT_ARG_LIST (WalkState->ArgTypes); - } - - switch (Op->Common.AmlOpcode) - { - case AML_METHOD_OP: - - /* For a method, save the length and address of the body */ - - /* - * Skip parsing of control method or opregion body, - * because we don't have enough info in the first pass - * to parse them correctly. - */ - Op->Named.Data = ParserState->Aml; - Op->Named.Length = (UINT32) (ParserState->PkgEnd - ParserState->Aml); - /* - * Skip body of method. For OpRegions, we must continue - * parsing because the opregion is not a standalone - * package (We don't know where the end is). - */ - ParserState->Aml = 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->DescendingCallback != AcpiDsExecBeginOp)) - { - /* - * Skip parsing of - * because we don't have enough info in the first pass - * to parse them correctly. - */ - Op->Named.Data = AmlOpStart; - Op->Named.Length = (UINT32) (ParserState->PkgEnd - AmlOpStart); - /* - * Skip body - */ - ParserState->Aml = ParserState->PkgEnd; - WalkState->ArgCount = 0; - } - break; - - case AML_WHILE_OP: - - if (WalkState->ControlState) - { - WalkState->ControlState->Control.PackageEnd = ParserState->PkgEnd; - } - break; - - default: - /* No action for all other opcodes */ - break; - } - break; - } - } - - /* 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)) - { - return_ACPI_STATUS (Status); - } - 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) - { - /* - * 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); - } - - /* 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; - goto CloseThisOp; - } - } - - -CloseThisOp: - /* - * Finished one argument of the containing scope - */ - ParserState->Scope->ParseScope.ArgCount--; - - /* Close this Op (will result in parse subtree deletion) */ - - AcpiPsCompleteThisOp (WalkState, Op); - Op = NULL; - - switch (Status) - { - case AE_OK: - break; - - - case AE_CTRL_TRANSFER: - - /* - * We are about to transfer to a called method. - */ - WalkState->PrevOp = Op; - WalkState->PrevArgTypes = WalkState->ArgTypes; - return_ACPI_STATUS (Status); - - - case AE_CTRL_END: - - AcpiPsPopScope (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); - - AcpiPsCompleteThisOp (WalkState, Op); - Op = NULL; - } - 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 (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); - - AcpiPsCompleteThisOp (WalkState, Op); - Op = NULL; - - Status = AE_OK; - break; - - - case AE_CTRL_TERMINATE: - - Status = AE_OK; - - /* Clean up */ - do - { - if (Op) - { - AcpiPsCompleteThisOp (WalkState, Op); - } - AcpiPsPopScope (ParserState, &Op, - &WalkState->ArgTypes, &WalkState->ArgCount); - - } while (Op); - - return_ACPI_STATUS (Status); - - - default: /* All other non-AE_OK status */ - - do - { - if (Op) - { - AcpiPsCompleteThisOp (WalkState, Op); - } - AcpiPsPopScope (ParserState, &Op, - &WalkState->ArgTypes, &WalkState->ArgCount); - - } while (Op); - - - /* - * TBD: Cleanup parse ops on error - */ -#if 0 - if (Op == NULL) - { - AcpiPsPopScope (ParserState, &Op, - &WalkState->ArgTypes, &WalkState->ArgCount); - } -#endif - WalkState->PrevOp = Op; - WalkState->PrevArgTypes = WalkState->ArgTypes; - return_ACPI_STATUS (Status); - } - - /* This scope complete? */ - - if (AcpiPsHasCompletedScope (ParserState)) - { - AcpiPsPopScope (ParserState, &Op, - &WalkState->ArgTypes, &WalkState->ArgCount); - ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Popped scope, Op=%p\n", Op)); - } - else - { - Op = NULL; - } - - } /* while ParserState->Aml */ - - - /* - * 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 = AE_OK; - goto CloseThisOp; - } - - if (Status == AE_CTRL_TERMINATE) - { - Status = AE_OK; - - /* Clean up */ - do - { - if (Op) - { - AcpiPsCompleteThisOp (WalkState, Op); - } - - AcpiPsPopScope (ParserState, &Op, - &WalkState->ArgTypes, &WalkState->ArgCount); - - } while (Op); - - return_ACPI_STATUS (Status); - } - - else if (ACPI_FAILURE (Status)) - { - AcpiPsCompleteThisOp (WalkState, Op); - return_ACPI_STATUS (Status); - } - } - - AcpiPsCompleteThisOp (WalkState, Op); - } - - AcpiPsPopScope (ParserState, &Op, &WalkState->ArgTypes, - &WalkState->ArgCount); - - } while (Op); - - return_ACPI_STATUS (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiPsParseAml - * - * PARAMETERS: StartScope - The starting point of the parse. Becomes the - * root of the parsed op tree. - * Aml - Pointer to the raw AML code to parse - * AmlSize - Length of the AML to parse - * - * - * RETURN: Status - * - * DESCRIPTION: Parse raw AML and return a tree of ops - * - ******************************************************************************/ - -ACPI_STATUS -AcpiPsParseAml ( - ACPI_WALK_STATE *WalkState) -{ - ACPI_STATUS Status; - ACPI_STATUS TerminateStatus; - ACPI_THREAD_STATE *Thread; - ACPI_THREAD_STATE *PrevWalkList = AcpiGbl_CurrentWalkList; - ACPI_WALK_STATE *PreviousWalkState; - - - ACPI_FUNCTION_TRACE ("PsParseAml"); - - ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Entered with WalkState=%p Aml=%p size=%X\n", - WalkState, WalkState->ParserState.Aml, WalkState->ParserState.AmlSize)); - - - /* Create and initialize a new thread state */ - - Thread = AcpiUtCreateThreadState (); - if (!Thread) - { - return_ACPI_STATUS (AE_NO_MEMORY); - } - - WalkState->Thread = Thread; - AcpiDsPushWalkState (WalkState, Thread); - - /* - * This global allows the AML debugger to get a handle to the currently - * executing control method. - */ - AcpiGbl_CurrentWalkList = Thread; - - /* - * Execute the walk loop as long as there is a valid Walk State. This - * handles nested control method invocations without recursion. - */ - ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "State=%p\n", WalkState)); - - Status = AE_OK; - while (WalkState) - { - if (ACPI_SUCCESS (Status)) - { - /* - * The ParseLoop executes AML until the method terminates - * or calls another method. - */ - Status = AcpiPsParseLoop (WalkState); - } - - ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, - "Completed one call to walk loop, %s State=%p\n", - AcpiFormatException (Status), WalkState)); - - if (Status == AE_CTRL_TRANSFER) - { - /* - * A method call was detected. - * Transfer control to the called control method - */ - Status = AcpiDsCallControlMethod (Thread, WalkState, NULL); - - /* - * If the transfer to the new method method call worked, a new walk - * state was created -- get it - */ - WalkState = AcpiDsGetCurrentWalkState (Thread); - continue; - } - else if (Status == AE_CTRL_TERMINATE) - { - Status = AE_OK; - } - else if (Status != AE_OK) - { - ACPI_REPORT_METHOD_ERROR ("Method execution failed", - WalkState->MethodNode, NULL, Status); - } - - /* We are done with this walk, move on to the parent if any */ - - WalkState = AcpiDsPopWalkState (Thread); - - /* Reset the current scope to the beginning of scope stack */ - - AcpiDsScopeStackClear (WalkState); - - /* - * If we just returned from the execution of a control method, - * there's lots of cleanup to do - */ - if ((WalkState->ParseFlags & ACPI_PARSE_MODE_MASK) == ACPI_PARSE_EXECUTE) - { - TerminateStatus = AcpiDsTerminateControlMethod (WalkState); - if (ACPI_FAILURE (TerminateStatus)) - { - ACPI_REPORT_ERROR (( - "Could not terminate control method properly\n")); - - /* Ignore error and continue */ - } - } - - /* Delete this walk state and all linked control states */ - - AcpiPsCleanupScope (&WalkState->ParserState); - - PreviousWalkState = WalkState; - - ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "ReturnValue=%p, State=%p\n", - WalkState->ReturnDesc, WalkState)); - - /* Check if we have restarted a preempted walk */ - - WalkState = AcpiDsGetCurrentWalkState (Thread); - if (WalkState) - { - if (ACPI_SUCCESS (Status)) - { - /* - * There is another walk state, restart it. - * If the method return value is not used by the parent, - * The object is deleted - */ - Status = AcpiDsRestartControlMethod (WalkState, - PreviousWalkState->ReturnDesc); - if (ACPI_SUCCESS (Status)) - { - WalkState->WalkType |= ACPI_WALK_METHOD_RESTART; - } - } - else - { - /* On error, delete any return object */ - - AcpiUtRemoveReference (PreviousWalkState->ReturnDesc); - } - } - - /* - * Just completed a 1st-level method, save the final internal return - * value (if any) - */ - else if (PreviousWalkState->CallerReturnDesc) - { - *(PreviousWalkState->CallerReturnDesc) = PreviousWalkState->ReturnDesc; /* NULL if no return value */ - } - else if (PreviousWalkState->ReturnDesc) - { - /* Caller doesn't want it, must delete it */ - - AcpiUtRemoveReference (PreviousWalkState->ReturnDesc); - } - - AcpiDsDeleteWalkState (PreviousWalkState); - } - - /* Normal exit */ - - AcpiExReleaseAllMutexes (Thread); - AcpiUtDeleteGenericState (ACPI_CAST_PTR (ACPI_GENERIC_STATE, Thread)); - AcpiGbl_CurrentWalkList = PrevWalkList; - return_ACPI_STATUS (Status); -} - - |