diff options
Diffstat (limited to 'sys/contrib/dev/acpica/dsopcode.c')
| -rw-r--r-- | sys/contrib/dev/acpica/dsopcode.c | 1085 |
1 files changed, 0 insertions, 1085 deletions
diff --git a/sys/contrib/dev/acpica/dsopcode.c b/sys/contrib/dev/acpica/dsopcode.c deleted file mode 100644 index 086f5c28ea363..0000000000000 --- a/sys/contrib/dev/acpica/dsopcode.c +++ /dev/null @@ -1,1085 +0,0 @@ -/****************************************************************************** - * - * Module Name: dsopcode - Dispatcher Op Region support and handling of - * "control" opcodes - * $Revision: 25 $ - * - *****************************************************************************/ - -/****************************************************************************** - * - * 1. Copyright Notice - * - * Some or all of this work - Copyright (c) 1999, 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. - * - *****************************************************************************/ - -#define __DSOPCODE_C__ - -#include "acpi.h" -#include "acparser.h" -#include "amlcode.h" -#include "acdispat.h" -#include "acinterp.h" -#include "acnamesp.h" -#include "acevents.h" -#include "actables.h" - -#define _COMPONENT DISPATCHER - MODULE_NAME ("dsopcode") - - -/***************************************************************************** - * - * FUNCTION: AcpiDsGetFieldUnitArguments - * - * PARAMETERS: ObjDesc - A valid FieldUnit object - * - * RETURN: Status. - * - * DESCRIPTION: Get FieldUnit Buffer and Index. This implements the late - * evaluation of these field attributes. - * - ****************************************************************************/ - -ACPI_STATUS -AcpiDsGetFieldUnitArguments ( - ACPI_OPERAND_OBJECT *ObjDesc) -{ - ACPI_OPERAND_OBJECT *ExtraDesc; - ACPI_NAMESPACE_NODE *Node; - ACPI_PARSE_OBJECT *Op; - ACPI_PARSE_OBJECT *FieldOp; - ACPI_STATUS Status; - ACPI_TABLE_DESC *TableDesc; - - - FUNCTION_TRACE_PTR ("DsGetFieldUnitArguments", ObjDesc); - - - if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) - { - return_ACPI_STATUS (AE_OK); - } - - - /* Get the AML pointer (method object) and FieldUnit node */ - - ExtraDesc = ObjDesc->FieldUnit.Extra; - Node = ObjDesc->FieldUnit.Node; - - DEBUG_PRINT (TRACE_EXEC, - ("DsGetFieldUnitArguments: [%4.4s] FieldUnit JIT Init\n", - &Node->Name)); - - - /* - * Allocate a new parser op to be the root of the parsed - * OpRegion tree - */ - - Op = AcpiPsAllocOp (AML_SCOPE_OP); - if (!Op) - { - return (AE_NO_MEMORY); - } - - /* Save the Node for use in AcpiPsParseAml */ - - Op->Node = AcpiNsGetParentObject (Node); - - /* Get a handle to the parent ACPI table */ - - Status = AcpiTbHandleToObject (Node->OwnerId, &TableDesc); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - /* Pass1: Parse the entire FieldUnit declaration */ - - Status = AcpiPsParseAml (Op, ExtraDesc->Extra.Pcode, - ExtraDesc->Extra.PcodeLength, 0, - NULL, NULL, NULL, AcpiDsLoad1BeginOp, AcpiDsLoad1EndOp); - if (ACPI_FAILURE (Status)) - { - AcpiPsDeleteParseTree (Op); - return_ACPI_STATUS (Status); - } - - - /* Get and init the actual FielUnitOp created above */ - - FieldOp = Op->Value.Arg; - Op->Node = Node; - - - FieldOp = Op->Value.Arg; - FieldOp->Node = Node; - AcpiPsDeleteParseTree (Op); - - /* AcpiEvaluate the address and length arguments for the OpRegion */ - - Op = AcpiPsAllocOp (AML_SCOPE_OP); - if (!Op) - { - return (AE_NO_MEMORY); - } - - Op->Node = AcpiNsGetParentObject (Node); - - Status = AcpiPsParseAml (Op, ExtraDesc->Extra.Pcode, - ExtraDesc->Extra.PcodeLength, - ACPI_PARSE_EXECUTE | ACPI_PARSE_DELETE_TREE, - NULL /*MethodDesc*/, NULL, NULL, - AcpiDsExecBeginOp, AcpiDsExecEndOp); - /* All done with the parse tree, delete it */ - - AcpiPsDeleteParseTree (Op); - - - /* - * The pseudo-method object is no longer needed since the region is - * now initialized - */ - AcpiCmRemoveReference (ObjDesc->FieldUnit.Extra); - ObjDesc->FieldUnit.Extra = NULL; - - return_ACPI_STATUS (Status); -} - - -/***************************************************************************** - * - * FUNCTION: AcpiDsGetRegionArguments - * - * PARAMETERS: ObjDesc - A valid region object - * - * RETURN: Status. - * - * DESCRIPTION: Get region address and length. This implements the late - * evaluation of these region attributes. - * - ****************************************************************************/ - -ACPI_STATUS -AcpiDsGetRegionArguments ( - ACPI_OPERAND_OBJECT *ObjDesc) -{ - ACPI_OPERAND_OBJECT *ExtraDesc = NULL; - ACPI_NAMESPACE_NODE *Node; - ACPI_PARSE_OBJECT *Op; - ACPI_PARSE_OBJECT *RegionOp; - ACPI_STATUS Status; - ACPI_TABLE_DESC *TableDesc; - - - FUNCTION_TRACE_PTR ("DsGetRegionArguments", ObjDesc); - - - if (ObjDesc->Region.Flags & AOPOBJ_DATA_VALID) - { - return_ACPI_STATUS (AE_OK); - } - - - /* Get the AML pointer (method object) and region node */ - - ExtraDesc = ObjDesc->Region.Extra; - Node = ObjDesc->Region.Node; - - DEBUG_PRINT (TRACE_EXEC, - ("DsGetRegionArguments: [%4.4s] OpRegion JIT Init\n", - &Node->Name)); - - /* - * Allocate a new parser op to be the root of the parsed - * OpRegion tree - */ - - Op = AcpiPsAllocOp (AML_SCOPE_OP); - if (!Op) - { - return (AE_NO_MEMORY); - } - - /* Save the Node for use in AcpiPsParseAml */ - - Op->Node = AcpiNsGetParentObject (Node); - - /* Get a handle to the parent ACPI table */ - - Status = AcpiTbHandleToObject (Node->OwnerId, &TableDesc); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - /* Parse the entire OpRegion declaration, creating a parse tree */ - - Status = AcpiPsParseAml (Op, ExtraDesc->Extra.Pcode, - ExtraDesc->Extra.PcodeLength, 0, - NULL, NULL, NULL, AcpiDsLoad1BeginOp, AcpiDsLoad1EndOp); - - if (ACPI_FAILURE (Status)) - { - AcpiPsDeleteParseTree (Op); - return_ACPI_STATUS (Status); - } - - - /* Get and init the actual RegionOp created above */ - - RegionOp = Op->Value.Arg; - Op->Node = Node; - - - RegionOp = Op->Value.Arg; - RegionOp->Node = Node; - AcpiPsDeleteParseTree (Op); - - /* AcpiEvaluate the address and length arguments for the OpRegion */ - - Op = AcpiPsAllocOp (AML_SCOPE_OP); - if (!Op) - { - return (AE_NO_MEMORY); - } - - Op->Node = AcpiNsGetParentObject (Node); - - Status = AcpiPsParseAml (Op, ExtraDesc->Extra.Pcode, - ExtraDesc->Extra.PcodeLength, - ACPI_PARSE_EXECUTE | ACPI_PARSE_DELETE_TREE, - NULL /*MethodDesc*/, NULL, NULL, - AcpiDsExecBeginOp, AcpiDsExecEndOp); - - /* All done with the parse tree, delete it */ - - AcpiPsDeleteParseTree (Op); - - return_ACPI_STATUS (Status); -} - - -/***************************************************************************** - * - * FUNCTION: AcpiDsInitializeRegion - * - * PARAMETERS: Op - A valid region Op object - * - * RETURN: Status - * - * DESCRIPTION: - * - ****************************************************************************/ - -ACPI_STATUS -AcpiDsInitializeRegion ( - ACPI_HANDLE ObjHandle) -{ - ACPI_OPERAND_OBJECT *ObjDesc; - ACPI_STATUS Status; - - - ObjDesc = AcpiNsGetAttachedObject (ObjHandle); - - /* Namespace is NOT locked */ - - Status = AcpiEvInitializeRegion (ObjDesc, FALSE); - - return (Status); -} - - -/***************************************************************************** - * - * FUNCTION: AcpiDsEvalFieldUnitOperands - * - * PARAMETERS: Op - A valid FieldUnit Op object - * - * RETURN: Status - * - * DESCRIPTION: Get FieldUnit Buffer and Index - * Called from AcpiDsExecEndOp during FieldUnit parse tree walk - * - ****************************************************************************/ - -ACPI_STATUS -AcpiDsEvalFieldUnitOperands ( - ACPI_WALK_STATE *WalkState, - ACPI_PARSE_OBJECT *Op) -{ - ACPI_STATUS Status; - ACPI_OPERAND_OBJECT *FieldDesc; - ACPI_NAMESPACE_NODE *Node; - ACPI_PARSE_OBJECT *NextOp; - UINT32 Offset; - UINT32 BitOffset; - UINT16 BitCount; - - - ACPI_OPERAND_OBJECT *ResDesc = NULL; - ACPI_OPERAND_OBJECT *CntDesc = NULL; - ACPI_OPERAND_OBJECT *OffDesc = NULL; - ACPI_OPERAND_OBJECT *SrcDesc = NULL; - UINT32 NumOperands = 3; - - - FUNCTION_TRACE_PTR ("DsEvalFieldUnitOperands", Op); - - - /* - * This is where we evaluate the address and length fields of the OpFieldUnit declaration - */ - - Node = Op->Node; - - /* NextOp points to the op that holds the Buffer */ - NextOp = Op->Value.Arg; - - /* AcpiEvaluate/create the address and length operands */ - - Status = AcpiDsCreateOperands (WalkState, NextOp); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - FieldDesc = AcpiNsGetAttachedObject (Node); - if (!FieldDesc) - { - return_ACPI_STATUS (AE_NOT_EXIST); - } - - - /* Resolve the operands */ - - Status = AcpiAmlResolveOperands (Op->Opcode, WALK_OPERANDS, WalkState); - DUMP_OPERANDS (WALK_OPERANDS, IMODE_EXECUTE, AcpiPsGetOpcodeName (Op->Opcode), - NumOperands, "after AcpiAmlResolveOperands"); - - - /* Get the operands */ - - Status |= AcpiDsObjStackPopObject (&ResDesc, WalkState); - if (AML_CREATE_FIELD_OP == Op->Opcode) - { - NumOperands = 4; - Status |= AcpiDsObjStackPopObject (&CntDesc, WalkState); - } - - Status |= AcpiDsObjStackPopObject (&OffDesc, WalkState); - Status |= AcpiDsObjStackPopObject (&SrcDesc, WalkState); - - if (ACPI_FAILURE (Status)) - { - /* Invalid parameters on object stack */ - - DEBUG_PRINT (ACPI_ERROR, - ("ExecCreateField/%s: bad operand(s) (0x%X)\n", - AcpiPsGetOpcodeName (Op->Opcode), Status)); - - goto Cleanup; - } - - - Offset = (UINT32) OffDesc->Number.Value; - - - /* - * If ResDesc is a Name, it will be a direct name pointer after - * AcpiAmlResolveOperands() - */ - - if (!VALID_DESCRIPTOR_TYPE (ResDesc, ACPI_DESC_TYPE_NAMED)) - { - DEBUG_PRINT (ACPI_ERROR, - ("AmlExecCreateField (%s): destination must be a Node\n", - AcpiPsGetOpcodeName (Op->Opcode))); - - Status = AE_AML_OPERAND_TYPE; - goto Cleanup; - } - - - /* - * Setup the Bit offsets and counts, according to the opcode - */ - - switch (Op->Opcode) - { - - /* DefCreateBitField */ - - case AML_BIT_FIELD_OP: - - /* Offset is in bits, Field is a bit */ - - BitOffset = Offset; - BitCount = 1; - break; - - - /* DefCreateByteField */ - - case AML_BYTE_FIELD_OP: - - /* Offset is in bytes, field is a byte */ - - BitOffset = 8 * Offset; - BitCount = 8; - break; - - - /* DefCreateWordField */ - - case AML_WORD_FIELD_OP: - - /* Offset is in bytes, field is a word */ - - BitOffset = 8 * Offset; - BitCount = 16; - break; - - - /* DefCreateDWordField */ - - case AML_DWORD_FIELD_OP: - - /* Offset is in bytes, field is a dword */ - - BitOffset = 8 * Offset; - BitCount = 32; - break; - - - /* DefCreateField */ - - case AML_CREATE_FIELD_OP: - - /* Offset is in bits, count is in bits */ - - BitOffset = Offset; - BitCount = (UINT16) CntDesc->Number.Value; - break; - - - default: - - DEBUG_PRINT (ACPI_ERROR, - ("AmlExecCreateField: Internal error - unknown field creation opcode %02x\n", - Op->Opcode)); - Status = AE_AML_BAD_OPCODE; - goto Cleanup; - } - - - /* - * Setup field according to the object type - */ - - switch (SrcDesc->Common.Type) - { - - /* SourceBuff := TermArg=>Buffer */ - - case ACPI_TYPE_BUFFER: - - if (BitOffset + (UINT32) BitCount > - (8 * (UINT32) SrcDesc->Buffer.Length)) - { - DEBUG_PRINT (ACPI_ERROR, - ("AmlExecCreateField: Field exceeds Buffer %d > %d\n", - BitOffset + (UINT32) BitCount, - 8 * (UINT32) SrcDesc->Buffer.Length)); - Status = AE_AML_BUFFER_LIMIT; - goto Cleanup; - } - - - /* Construct the remainder of the field object */ - - FieldDesc->FieldUnit.Access = (UINT8) ACCESS_ANY_ACC; - FieldDesc->FieldUnit.LockRule = (UINT8) GLOCK_NEVER_LOCK; - FieldDesc->FieldUnit.UpdateRule = (UINT8) UPDATE_PRESERVE; - FieldDesc->FieldUnit.Length = BitCount; - FieldDesc->FieldUnit.BitOffset = (UINT8) (BitOffset % 8); - FieldDesc->FieldUnit.Offset = DIV_8 (BitOffset); - FieldDesc->FieldUnit.Container = SrcDesc; - - /* Reference count for SrcDesc inherits FieldDesc count */ - - SrcDesc->Common.ReferenceCount = (UINT16) (SrcDesc->Common.ReferenceCount + - FieldDesc->Common.ReferenceCount); - - break; - - - /* Improper object type */ - - default: - - if ((SrcDesc->Common.Type > (UINT8) INTERNAL_TYPE_REFERENCE) || - !AcpiCmValidObjectType (SrcDesc->Common.Type)) - { - DEBUG_PRINT (ACPI_ERROR, - ("AmlExecCreateField: Tried to create field in invalid object type - 0x%X\n", - SrcDesc->Common.Type)); - } - - else - { - DEBUG_PRINT (ACPI_ERROR, - ("AmlExecCreateField: Tried to create field in improper object type - %s\n", - AcpiCmGetTypeName (SrcDesc->Common.Type))); - } - - Status = AE_AML_OPERAND_TYPE; - goto Cleanup; - } - - - if (AML_CREATE_FIELD_OP == Op->Opcode) - { - /* Delete object descriptor unique to CreateField */ - - AcpiCmRemoveReference (CntDesc); - CntDesc = NULL; - } - - -Cleanup: - - /* Always delete the operands */ - - AcpiCmRemoveReference (OffDesc); - AcpiCmRemoveReference (SrcDesc); - - if (AML_CREATE_FIELD_OP == Op->Opcode) - { - AcpiCmRemoveReference (CntDesc); - } - - /* On failure, delete the result descriptor */ - - if (ACPI_FAILURE (Status)) - { - AcpiCmRemoveReference (ResDesc); /* Result descriptor */ - } - - else - { - /* Now the address and length are valid for this opFieldUnit */ - - FieldDesc->FieldUnit.Flags |= AOPOBJ_DATA_VALID; - } - - return_ACPI_STATUS (Status); -} - - -/***************************************************************************** - * - * FUNCTION: AcpiDsEvalRegionOperands - * - * PARAMETERS: Op - A valid region Op object - * - * RETURN: Status - * - * DESCRIPTION: Get region address and length - * Called from AcpiDsExecEndOp during OpRegion parse tree walk - * - ****************************************************************************/ - -ACPI_STATUS -AcpiDsEvalRegionOperands ( - ACPI_WALK_STATE *WalkState, - ACPI_PARSE_OBJECT *Op) -{ - ACPI_STATUS Status; - ACPI_OPERAND_OBJECT *ObjDesc; - ACPI_OPERAND_OBJECT *OperandDesc; - ACPI_NAMESPACE_NODE *Node; - ACPI_PARSE_OBJECT *NextOp; - - - FUNCTION_TRACE_PTR ("DsEvalRegionOperands", Op); - - - /* - * This is where we evaluate the address and length fields of the OpRegion declaration - */ - - Node = Op->Node; - - /* NextOp points to the op that holds the SpaceID */ - NextOp = Op->Value.Arg; - - /* NextOp points to address op */ - NextOp = NextOp->Next; - - /* AcpiEvaluate/create the address and length operands */ - - Status = AcpiDsCreateOperands (WalkState, NextOp); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - /* Resolve the length and address operands to numbers */ - - Status = AcpiAmlResolveOperands (Op->Opcode, WALK_OPERANDS, WalkState); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - DUMP_OPERANDS (WALK_OPERANDS, IMODE_EXECUTE, - AcpiPsGetOpcodeName (Op->Opcode), - 1, "after AcpiAmlResolveOperands"); - - - ObjDesc = AcpiNsGetAttachedObject (Node); - if (!ObjDesc) - { - return_ACPI_STATUS (AE_NOT_EXIST); - } - - /* - * Get the length operand and save it - * (at Top of stack) - */ - OperandDesc = WalkState->Operands[WalkState->NumOperands - 1]; - - ObjDesc->Region.Length = (UINT32) OperandDesc->Number.Value; - AcpiCmRemoveReference (OperandDesc); - - /* - * Get the address and save it - * (at top of stack - 1) - */ - OperandDesc = WalkState->Operands[WalkState->NumOperands - 2]; - - ObjDesc->Region.Address = (ACPI_PHYSICAL_ADDRESS) OperandDesc->Number.Value; - AcpiCmRemoveReference (OperandDesc); - - - DEBUG_PRINT (TRACE_EXEC, - ("DsEvalRegionOperands: RgnObj %p Addr %X Len %X\n", - ObjDesc, ObjDesc->Region.Address, ObjDesc->Region.Length)); - - /* Now the address and length are valid for this opregion */ - - ObjDesc->Region.Flags |= AOPOBJ_DATA_VALID; - - return_ACPI_STATUS (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiDsExecBeginControlOp - * - * PARAMETERS: WalkList - The list that owns the walk stack - * Op - The control Op - * - * RETURN: Status - * - * DESCRIPTION: Handles all control ops encountered during control method - * execution. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiDsExecBeginControlOp ( - ACPI_WALK_STATE *WalkState, - ACPI_PARSE_OBJECT *Op) -{ - ACPI_STATUS Status = AE_OK; - ACPI_GENERIC_STATE *ControlState; - - - DEBUG_PRINT (TRACE_DISPATCH, - ("BeginControlOp: Op=%p Opcode=%2.2X State=%p\n", Op, - Op->Opcode, WalkState)); - - switch (Op->Opcode) - { - case AML_IF_OP: - case AML_WHILE_OP: - - /* - * IF/WHILE: Create a new control state to manage these - * constructs. We need to manage these as a stack, in order - * to handle nesting. - */ - - ControlState = AcpiCmCreateControlState (); - if (!ControlState) - { - Status = AE_NO_MEMORY; - break; - } - - AcpiCmPushGenericState (&WalkState->ControlState, ControlState); - - /* - * Save a pointer to the predicate for multiple executions - * of a loop - */ - WalkState->ControlState->Control.AmlPredicateStart = - WalkState->ParserState->Aml - 1; - /* TBD: can this be removed? */ - /*AcpiPsPkgLengthEncodingSize (GET8 (WalkState->ParserState->Aml));*/ - break; - - - case AML_ELSE_OP: - - /* Predicate is in the state object */ - /* If predicate is true, the IF was executed, ignore ELSE part */ - - if (WalkState->LastPredicate) - { - Status = AE_CTRL_TRUE; - } - - break; - - - case AML_RETURN_OP: - - break; - - - default: - break; - } - - return (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiDsExecEndControlOp - * - * PARAMETERS: WalkList - The list that owns the walk stack - * Op - The control Op - * - * RETURN: Status - * - * DESCRIPTION: Handles all control ops encountered during control method - * execution. - * - * - ******************************************************************************/ - -ACPI_STATUS -AcpiDsExecEndControlOp ( - ACPI_WALK_STATE *WalkState, - ACPI_PARSE_OBJECT *Op) -{ - ACPI_STATUS Status = AE_OK; - ACPI_GENERIC_STATE *ControlState; - - - switch (Op->Opcode) - { - case AML_IF_OP: - - DEBUG_PRINT (TRACE_DISPATCH, - ("EndControlOp: [IF_OP] Op=%p\n", Op)); - - /* - * Save the result of the predicate in case there is an - * ELSE to come - */ - - WalkState->LastPredicate = - (BOOLEAN) WalkState->ControlState->Common.Value; - - /* - * Pop the control state that was created at the start - * of the IF and free it - */ - - ControlState = - AcpiCmPopGenericState (&WalkState->ControlState); - - AcpiCmDeleteGenericState (ControlState); - - break; - - - case AML_ELSE_OP: - - break; - - - case AML_WHILE_OP: - - DEBUG_PRINT (TRACE_DISPATCH, - ("EndControlOp: [WHILE_OP] Op=%p\n", Op)); - - if (WalkState->ControlState->Common.Value) - { - /* Predicate was true, go back and evaluate it again! */ - - Status = AE_CTRL_PENDING; - } - - - DEBUG_PRINT (TRACE_DISPATCH, - ("EndControlOp: [WHILE_OP] termination! Op=%p\n", Op)); - - /* Pop this control state and free it */ - - ControlState = - AcpiCmPopGenericState (&WalkState->ControlState); - - WalkState->AmlLastWhile = ControlState->Control.AmlPredicateStart; - AcpiCmDeleteGenericState (ControlState); - - break; - - - case AML_RETURN_OP: - - DEBUG_PRINT (TRACE_DISPATCH, - ("EndControlOp: [RETURN_OP] Op=%p Arg=%p\n",Op, Op->Value.Arg)); - - - /* - * One optional operand -- the return value - * It can be either an immediate operand or a result that - * has been bubbled up the tree - */ - if (Op->Value.Arg) - { - /* Return statement has an immediate operand */ - - Status = AcpiDsCreateOperands (WalkState, Op->Value.Arg); - if (ACPI_FAILURE (Status)) - { - return (Status); - } - - /* - * If value being returned is a Reference (such as - * an arg or local), resolve it now because it may - * cease to exist at the end of the method. - */ - - Status = AcpiAmlResolveToValue (&WalkState->Operands [0], WalkState); - if (ACPI_FAILURE (Status)) - { - return (Status); - } - - /* - * Get the return value and save as the last result - * value. This is the only place where WalkState->ReturnDesc - * is set to anything other than zero! - */ - - WalkState->ReturnDesc = WalkState->Operands[0]; - } - - else if (WalkState->NumResults > 0) - { - /* - * The return value has come from a previous calculation. - * - * If value being returned is a Reference (such as - * an arg or local), resolve it now because it may - * cease to exist at the end of the method. - */ - - Status = AcpiAmlResolveToValue (&WalkState->Results [0], WalkState); - if (ACPI_FAILURE (Status)) - { - return (Status); - } - - WalkState->ReturnDesc = WalkState->Results [0]; - } - - else - { - /* No return operand */ - - if (WalkState->NumOperands) - { - AcpiCmRemoveReference (WalkState->Operands [0]); - } - - WalkState->Operands [0] = NULL; - WalkState->NumOperands = 0; - WalkState->ReturnDesc = NULL; - } - - - DEBUG_PRINT (TRACE_DISPATCH, - ("EndControlOp: Completed RETURN_OP State=%p, RetVal=%p\n", - WalkState, WalkState->ReturnDesc)); - - /* End the control method execution right now */ - Status = AE_CTRL_TERMINATE; - break; - - - case AML_NOOP_OP: - - /* Just do nothing! */ - break; - - - case AML_BREAK_POINT_OP: - - /* Call up to the OS dependent layer to handle this */ - - AcpiOsBreakpoint (NULL); - - /* If it returns, we are done! */ - - break; - - - case AML_BREAK_OP: - - DEBUG_PRINT (ACPI_INFO, - ("EndControlOp: Break to end of current package, Op=%p\n", Op)); - - /* - * As per the ACPI specification: - * "The break operation causes the current package - * execution to complete" - * "Break -- Stop executing the current code package - * at this point" - * - * Returning AE_FALSE here will cause termination of - * the current package, and execution will continue one - * level up, starting with the completion of the parent Op. - */ - - Status = AE_CTRL_FALSE; - break; - - - default: - - DEBUG_PRINT (ACPI_ERROR, - ("EndControlOp: Unknown control opcode=%X Op=%p\n", - Op->Opcode, Op)); - - Status = AE_AML_BAD_OPCODE; - break; - } - - - return (Status); -} - |