790 lines
21 KiB
C
790 lines
21 KiB
C
/******************************************************************************
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*
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* Module Name: aslfold - Constant folding
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2015, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include "aslcompiler.h"
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#include "aslcompiler.y.h"
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#include "amlcode.h"
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#include "acdispat.h"
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#include "acparser.h"
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#define _COMPONENT ACPI_COMPILER
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ACPI_MODULE_NAME ("aslfold")
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/* Local prototypes */
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static ACPI_STATUS
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OpcAmlEvaluationWalk1 (
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ACPI_PARSE_OBJECT *Op,
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UINT32 Level,
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void *Context);
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static ACPI_STATUS
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OpcAmlEvaluationWalk2 (
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ACPI_PARSE_OBJECT *Op,
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UINT32 Level,
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void *Context);
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static ACPI_STATUS
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OpcAmlCheckForConstant (
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ACPI_PARSE_OBJECT *Op,
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UINT32 Level,
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void *Context);
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static void
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OpcUpdateIntegerNode (
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ACPI_PARSE_OBJECT *Op,
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UINT64 Value);
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static ACPI_STATUS
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TrTransformToStoreOp (
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ACPI_PARSE_OBJECT *Op,
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ACPI_WALK_STATE *WalkState);
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static ACPI_STATUS
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TrSimpleConstantReduction (
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ACPI_PARSE_OBJECT *Op,
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ACPI_WALK_STATE *WalkState);
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static void
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TrInstallReducedConstant (
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ACPI_PARSE_OBJECT *Op,
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ACPI_OPERAND_OBJECT *ObjDesc);
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/*******************************************************************************
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*
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* FUNCTION: OpcAmlConstantWalk
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*
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* PARAMETERS: ASL_WALK_CALLBACK
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*
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* RETURN: Status
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*
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* DESCRIPTION: Reduce an Op and its subtree to a constant if possible
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*
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******************************************************************************/
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ACPI_STATUS
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OpcAmlConstantWalk (
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ACPI_PARSE_OBJECT *Op,
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UINT32 Level,
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void *Context)
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{
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ACPI_WALK_STATE *WalkState;
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ACPI_STATUS Status = AE_OK;
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if (Op->Asl.CompileFlags == 0)
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{
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return (AE_OK);
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}
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/*
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* Only interested in subtrees that could possibly contain
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* expressions that can be evaluated at this time
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*/
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if ((!(Op->Asl.CompileFlags & NODE_COMPILE_TIME_CONST)) ||
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(Op->Asl.CompileFlags & NODE_IS_TARGET))
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{
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return (AE_OK);
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}
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/* Create a new walk state */
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WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL);
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if (!WalkState)
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{
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return (AE_NO_MEMORY);
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}
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WalkState->NextOp = NULL;
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WalkState->Params = NULL;
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/*
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* Examine the entire subtree -- all nodes must be constants
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* or type 3/4/5 opcodes
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*/
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Status = TrWalkParseTree (Op, ASL_WALK_VISIT_DOWNWARD,
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OpcAmlCheckForConstant, NULL, WalkState);
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/*
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* Did we find an entire subtree that contains all constants
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* and type 3/4/5 opcodes?
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*/
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switch (Status)
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{
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case AE_OK:
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/* Simple case, like Add(3,4) -> 7 */
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Status = TrSimpleConstantReduction (Op, WalkState);
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break;
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case AE_CTRL_RETURN_VALUE:
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/* More complex case, like Add(3,4,Local0) -> Store(7,Local0) */
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Status = TrTransformToStoreOp (Op, WalkState);
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break;
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case AE_TYPE:
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AcpiDsDeleteWalkState (WalkState);
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return (AE_OK);
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default:
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AcpiDsDeleteWalkState (WalkState);
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break;
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}
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if (ACPI_FAILURE (Status))
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{
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DbgPrint (ASL_PARSE_OUTPUT, "Cannot resolve, %s\n",
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AcpiFormatException (Status));
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/* We could not resolve the subtree for some reason */
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AslError (ASL_ERROR, ASL_MSG_CONSTANT_EVALUATION, Op,
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(char *) AcpiFormatException (Status));
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/* Set the subtree value to ZERO anyway. Eliminates further errors */
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OpcUpdateIntegerNode (Op, 0);
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}
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/* Abort the walk of this subtree, we are done with it */
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return (AE_CTRL_DEPTH);
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}
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/*******************************************************************************
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*
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* FUNCTION: OpcAmlCheckForConstant
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*
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* PARAMETERS: ASL_WALK_CALLBACK
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*
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* RETURN: Status
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*
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* DESCRIPTION: Check one Op for a type 3/4/5 AML opcode
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*
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******************************************************************************/
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static ACPI_STATUS
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OpcAmlCheckForConstant (
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ACPI_PARSE_OBJECT *Op,
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UINT32 Level,
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void *Context)
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{
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ACPI_WALK_STATE *WalkState = Context;
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ACPI_STATUS Status = AE_OK;
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WalkState->Op = Op;
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WalkState->Opcode = Op->Common.AmlOpcode;
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WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
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DbgPrint (ASL_PARSE_OUTPUT, "[%.4d] Opcode: %12.12s ",
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Op->Asl.LogicalLineNumber, Op->Asl.ParseOpName);
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/*
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* TBD: Ignore buffer constants for now. The problem is that these
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* constants have been transformed into RAW_DATA at this point, from
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* the parse tree transform process which currently happens before
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* the constant folding process. We may need to defer this transform
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* for buffer until after the constant folding.
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*/
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if (WalkState->Opcode == AML_BUFFER_OP)
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{
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DbgPrint (ASL_PARSE_OUTPUT,
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"\nBuffer+Buffer->Buffer constant reduction is not supported yet");
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Status = AE_TYPE;
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goto CleanupAndExit;
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}
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/*
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* These opcodes do not appear in the OpcodeInfo table, but
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* they represent constants, so abort the constant walk now.
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*/
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if ((WalkState->Opcode == AML_RAW_DATA_BYTE) ||
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(WalkState->Opcode == AML_RAW_DATA_WORD) ||
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(WalkState->Opcode == AML_RAW_DATA_DWORD) ||
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(WalkState->Opcode == AML_RAW_DATA_QWORD))
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{
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DbgPrint (ASL_PARSE_OUTPUT, "RAW DATA");
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Status = AE_TYPE;
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goto CleanupAndExit;
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}
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/* Type 3/4/5 opcodes have the AML_CONSTANT flag set */
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if (!(WalkState->OpInfo->Flags & AML_CONSTANT))
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{
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/* Not 3/4/5 opcode, but maybe can convert to STORE */
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if (Op->Asl.CompileFlags & NODE_IS_TARGET)
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{
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DbgPrint (ASL_PARSE_OUTPUT,
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"**** Valid Target, transform to Store ****\n");
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return (AE_CTRL_RETURN_VALUE);
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}
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/* Expression cannot be reduced */
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DbgPrint (ASL_PARSE_OUTPUT,
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"**** Not a Type 3/4/5 opcode (%s) ****",
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Op->Asl.ParseOpName);
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Status = AE_TYPE;
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goto CleanupAndExit;
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}
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/* Debug output */
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DbgPrint (ASL_PARSE_OUTPUT, "TYPE_345");
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if (Op->Asl.CompileFlags & NODE_IS_TARGET)
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{
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if (Op->Asl.ParseOpcode == PARSEOP_ZERO)
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{
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DbgPrint (ASL_PARSE_OUTPUT, "%-16s", " NULL TARGET");
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}
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else
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{
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DbgPrint (ASL_PARSE_OUTPUT, "%-16s", " VALID TARGET");
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}
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}
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if (Op->Asl.CompileFlags & NODE_IS_TERM_ARG)
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{
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DbgPrint (ASL_PARSE_OUTPUT, "%-16s", " TERMARG");
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}
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CleanupAndExit:
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/* Dump the node compile flags also */
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TrPrintNodeCompileFlags (Op->Asl.CompileFlags);
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DbgPrint (ASL_PARSE_OUTPUT, "\n");
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return (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: TrSimpleConstantReduction
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*
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* PARAMETERS: Op - Parent operator to be transformed
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* WalkState - Current walk state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Reduce an entire AML operation to a single constant. The
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* operation must not have a target operand.
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*
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* Add (32,64) --> 96
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*
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******************************************************************************/
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static ACPI_STATUS
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TrSimpleConstantReduction (
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ACPI_PARSE_OBJECT *Op,
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_PARSE_OBJECT *RootOp;
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ACPI_PARSE_OBJECT *OriginalParentOp;
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ACPI_OPERAND_OBJECT *ObjDesc;
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ACPI_STATUS Status;
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DbgPrint (ASL_PARSE_OUTPUT,
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"Simple subtree constant reduction, operator to constant\n");
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/* Allocate a new temporary root for this subtree */
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RootOp = TrAllocateNode (PARSEOP_INTEGER);
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if (!RootOp)
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{
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return (AE_NO_MEMORY);
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}
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RootOp->Common.AmlOpcode = AML_INT_EVAL_SUBTREE_OP;
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OriginalParentOp = Op->Common.Parent;
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Op->Common.Parent = RootOp;
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/* Hand off the subtree to the AML interpreter */
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WalkState->CallerReturnDesc = &ObjDesc;
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Status = TrWalkParseTree (Op, ASL_WALK_VISIT_TWICE,
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OpcAmlEvaluationWalk1, OpcAmlEvaluationWalk2, WalkState);
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/* Restore original parse tree */
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Op->Common.Parent = OriginalParentOp;
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if (ACPI_FAILURE (Status))
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{
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DbgPrint (ASL_PARSE_OUTPUT,
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"Constant Subtree evaluation(1), %s\n",
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AcpiFormatException (Status));
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return (Status);
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}
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/* Get the final result */
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Status = AcpiDsResultPop (&ObjDesc, WalkState);
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if (ACPI_FAILURE (Status))
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{
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DbgPrint (ASL_PARSE_OUTPUT,
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"Constant Subtree evaluation(2), %s\n",
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AcpiFormatException (Status));
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return (Status);
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}
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/* Disconnect any existing children, install new constant */
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Op->Asl.Child = NULL;
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TrInstallReducedConstant (Op, ObjDesc);
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UtSetParseOpName (Op);
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: TrTransformToStoreOp
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*
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* PARAMETERS: Op - Parent operator to be transformed
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* WalkState - Current walk state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Transforms a single AML operation with a constant and target
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* to a simple store operation:
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*
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* Add (32,64,DATA) --> Store (96,DATA)
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*
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******************************************************************************/
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static ACPI_STATUS
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TrTransformToStoreOp (
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ACPI_PARSE_OBJECT *Op,
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_PARSE_OBJECT *OriginalTarget;
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ACPI_PARSE_OBJECT *NewTarget;
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ACPI_PARSE_OBJECT *Child1;
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ACPI_PARSE_OBJECT *Child2;
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ACPI_OPERAND_OBJECT *ObjDesc;
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ACPI_PARSE_OBJECT *NewParent;
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ACPI_PARSE_OBJECT *OriginalParent;
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ACPI_STATUS Status;
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DbgPrint (ASL_PARSE_OUTPUT,
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"Reduction/Transform to StoreOp: Store(Constant, Target)\n");
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/* Extract the operands */
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Child1 = Op->Asl.Child;
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Child2 = Child1->Asl.Next;
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/*
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* Special case for DIVIDE -- it has two targets. The first
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* is for the remainder and if present, we will not attempt
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* to reduce the expression.
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*/
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if (Op->Asl.ParseOpcode == PARSEOP_DIVIDE)
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{
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Child2 = Child2->Asl.Next;
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if (Child2->Asl.ParseOpcode != PARSEOP_ZERO)
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{
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DbgPrint (ASL_PARSE_OUTPUT,
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"Cannot reduce DIVIDE - has two targets\n\n");
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return (AE_OK);
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}
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}
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/*
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* Create a NULL (zero) target so that we can use the
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* interpreter to evaluate the expression.
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*/
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NewTarget = TrCreateNullTarget ();
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NewTarget->Common.AmlOpcode = AML_INT_NAMEPATH_OP;
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/* Handle one-operand cases (NOT, TOBCD, etc.) */
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if (!Child2->Asl.Next)
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{
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Child2 = Child1;
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}
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/* Link in new NULL target as the last operand */
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OriginalTarget = Child2->Asl.Next;
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Child2->Asl.Next = NewTarget;
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NewTarget->Asl.Parent = OriginalTarget->Asl.Parent;
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NewParent = TrAllocateNode (PARSEOP_INTEGER);
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NewParent->Common.AmlOpcode = AML_INT_EVAL_SUBTREE_OP;
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OriginalParent = Op->Common.Parent;
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Op->Common.Parent = NewParent;
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/* Hand off the subtree to the AML interpreter */
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WalkState->CallerReturnDesc = &ObjDesc;
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Status = TrWalkParseTree (Op, ASL_WALK_VISIT_TWICE,
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OpcAmlEvaluationWalk1, OpcAmlEvaluationWalk2, WalkState);
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if (ACPI_FAILURE (Status))
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{
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DbgPrint (ASL_PARSE_OUTPUT,
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"Constant Subtree evaluation(3), %s\n",
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AcpiFormatException (Status));
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goto EvalError;
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}
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/* Get the final result */
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Status = AcpiDsResultPop (&ObjDesc, WalkState);
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if (ACPI_FAILURE (Status))
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{
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DbgPrint (ASL_PARSE_OUTPUT,
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"Constant Subtree evaluation(4), %s\n",
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AcpiFormatException (Status));
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goto EvalError;
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}
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/* Truncate any subtree expressions, they have been evaluated */
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Child1->Asl.Child = NULL;
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/* Folded constant is in ObjDesc, store into Child1 */
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TrInstallReducedConstant (Child1, ObjDesc);
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/* Convert operator to STORE */
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Op->Asl.ParseOpcode = PARSEOP_STORE;
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Op->Asl.AmlOpcode = AML_STORE_OP;
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UtSetParseOpName (Op);
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Op->Common.Parent = OriginalParent;
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/* First child is the folded constant */
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/* Second child will be the target */
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Child1->Asl.Next = OriginalTarget;
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return (AE_OK);
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EvalError:
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/* Restore original links */
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Op->Common.Parent = OriginalParent;
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Child2->Asl.Next = OriginalTarget;
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return (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: TrInstallReducedConstant
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*
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* PARAMETERS: Op - Parent operator to be transformed
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* ObjDesc - Reduced constant to be installed
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*
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* RETURN: None
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*
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* DESCRIPTION: Transform the original operator to a simple constant.
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* Handles Integers, Strings, and Buffers.
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*
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******************************************************************************/
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static void
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TrInstallReducedConstant (
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ACPI_PARSE_OBJECT *Op,
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ACPI_OPERAND_OBJECT *ObjDesc)
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{
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ACPI_PARSE_OBJECT *LengthOp;
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ACPI_PARSE_OBJECT *DataOp;
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TotalFolds++;
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AslError (ASL_OPTIMIZATION, ASL_MSG_CONSTANT_FOLDED, Op,
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Op->Asl.ParseOpName);
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/*
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* Because we know we executed type 3/4/5 opcodes above, we know that
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* the result must be either an Integer, String, or Buffer.
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*/
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switch (ObjDesc->Common.Type)
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{
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case ACPI_TYPE_INTEGER:
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OpcUpdateIntegerNode (Op, ObjDesc->Integer.Value);
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DbgPrint (ASL_PARSE_OUTPUT,
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"Constant expression reduced to (%s) %8.8X%8.8X\n\n",
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Op->Asl.ParseOpName,
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ACPI_FORMAT_UINT64 (Op->Common.Value.Integer));
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break;
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|
|
case ACPI_TYPE_STRING:
|
|
|
|
Op->Asl.ParseOpcode = PARSEOP_STRING_LITERAL;
|
|
Op->Common.AmlOpcode = AML_STRING_OP;
|
|
Op->Asl.AmlLength = strlen (ObjDesc->String.Pointer) + 1;
|
|
Op->Common.Value.String = ObjDesc->String.Pointer;
|
|
|
|
DbgPrint (ASL_PARSE_OUTPUT,
|
|
"Constant expression reduced to (STRING) %s\n\n",
|
|
Op->Common.Value.String);
|
|
break;
|
|
|
|
case ACPI_TYPE_BUFFER:
|
|
/*
|
|
* Create a new parse subtree of the form:
|
|
*
|
|
* BUFFER (Buffer AML opcode)
|
|
* INTEGER (Buffer length in bytes)
|
|
* RAW_DATA (Buffer byte data)
|
|
*/
|
|
Op->Asl.ParseOpcode = PARSEOP_BUFFER;
|
|
Op->Common.AmlOpcode = AML_BUFFER_OP;
|
|
Op->Asl.CompileFlags = NODE_AML_PACKAGE;
|
|
UtSetParseOpName (Op);
|
|
|
|
/* Child node is the buffer length */
|
|
|
|
LengthOp = TrAllocateNode (PARSEOP_INTEGER);
|
|
|
|
LengthOp->Asl.AmlOpcode = AML_DWORD_OP;
|
|
LengthOp->Asl.Value.Integer = ObjDesc->Buffer.Length;
|
|
LengthOp->Asl.Parent = Op;
|
|
(void) OpcSetOptimalIntegerSize (LengthOp);
|
|
|
|
Op->Asl.Child = LengthOp;
|
|
|
|
/* Next child is the raw buffer data */
|
|
|
|
DataOp = TrAllocateNode (PARSEOP_RAW_DATA);
|
|
DataOp->Asl.AmlOpcode = AML_RAW_DATA_BUFFER;
|
|
DataOp->Asl.AmlLength = ObjDesc->Buffer.Length;
|
|
DataOp->Asl.Value.String = (char *) ObjDesc->Buffer.Pointer;
|
|
DataOp->Asl.Parent = Op;
|
|
|
|
LengthOp->Asl.Next = DataOp;
|
|
|
|
DbgPrint (ASL_PARSE_OUTPUT,
|
|
"Constant expression reduced to (BUFFER) length %X\n\n",
|
|
ObjDesc->Buffer.Length);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: OpcUpdateIntegerNode
|
|
*
|
|
* PARAMETERS: Op - Current parse object
|
|
* Value - Value for the integer op
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Update node to the correct Integer type and value
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void
|
|
OpcUpdateIntegerNode (
|
|
ACPI_PARSE_OBJECT *Op,
|
|
UINT64 Value)
|
|
{
|
|
|
|
Op->Common.Value.Integer = Value;
|
|
|
|
/*
|
|
* The AmlLength is used by the parser to indicate a constant,
|
|
* (if non-zero). Length is either (1/2/4/8)
|
|
*/
|
|
switch (Op->Asl.AmlLength)
|
|
{
|
|
case 1:
|
|
|
|
TrUpdateNode (PARSEOP_BYTECONST, Op);
|
|
Op->Asl.AmlOpcode = AML_RAW_DATA_BYTE;
|
|
break;
|
|
|
|
case 2:
|
|
|
|
TrUpdateNode (PARSEOP_WORDCONST, Op);
|
|
Op->Asl.AmlOpcode = AML_RAW_DATA_WORD;
|
|
break;
|
|
|
|
case 4:
|
|
|
|
TrUpdateNode (PARSEOP_DWORDCONST, Op);
|
|
Op->Asl.AmlOpcode = AML_RAW_DATA_DWORD;
|
|
break;
|
|
|
|
case 8:
|
|
|
|
TrUpdateNode (PARSEOP_QWORDCONST, Op);
|
|
Op->Asl.AmlOpcode = AML_RAW_DATA_QWORD;
|
|
break;
|
|
|
|
case 0:
|
|
default:
|
|
|
|
OpcSetOptimalIntegerSize (Op);
|
|
TrUpdateNode (PARSEOP_INTEGER, Op);
|
|
break;
|
|
}
|
|
|
|
Op->Asl.AmlLength = 0;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: OpcAmlEvaluationWalk1
|
|
*
|
|
* PARAMETERS: ASL_WALK_CALLBACK
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Descending callback for AML execution of constant subtrees
|
|
*
|
|
******************************************************************************/
|
|
|
|
static ACPI_STATUS
|
|
OpcAmlEvaluationWalk1 (
|
|
ACPI_PARSE_OBJECT *Op,
|
|
UINT32 Level,
|
|
void *Context)
|
|
{
|
|
ACPI_WALK_STATE *WalkState = Context;
|
|
ACPI_STATUS Status;
|
|
ACPI_PARSE_OBJECT *OutOp;
|
|
|
|
|
|
WalkState->Op = Op;
|
|
WalkState->Opcode = Op->Common.AmlOpcode;
|
|
WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
|
|
|
|
/* Copy child pointer to Arg for compatibility with Interpreter */
|
|
|
|
if (Op->Asl.Child)
|
|
{
|
|
Op->Common.Value.Arg = Op->Asl.Child;
|
|
}
|
|
|
|
/* Call AML dispatcher */
|
|
|
|
Status = AcpiDsExecBeginOp (WalkState, &OutOp);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
DbgPrint (ASL_PARSE_OUTPUT,
|
|
"%s Constant interpretation failed (1) - %s\n",
|
|
Op->Asl.ParseOpName, AcpiFormatException (Status));
|
|
}
|
|
|
|
return (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: OpcAmlEvaluationWalk2
|
|
*
|
|
* PARAMETERS: ASL_WALK_CALLBACK
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Ascending callback for AML execution of constant subtrees
|
|
*
|
|
******************************************************************************/
|
|
|
|
static ACPI_STATUS
|
|
OpcAmlEvaluationWalk2 (
|
|
ACPI_PARSE_OBJECT *Op,
|
|
UINT32 Level,
|
|
void *Context)
|
|
{
|
|
ACPI_WALK_STATE *WalkState = Context;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
WalkState->Op = Op;
|
|
WalkState->Opcode = Op->Common.AmlOpcode;
|
|
WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
|
|
|
|
/* Copy child pointer to Arg for compatibility with Interpreter */
|
|
|
|
if (Op->Asl.Child)
|
|
{
|
|
Op->Common.Value.Arg = Op->Asl.Child;
|
|
}
|
|
|
|
/* Call AML dispatcher */
|
|
|
|
Status = AcpiDsExecEndOp (WalkState);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
DbgPrint (ASL_PARSE_OUTPUT,
|
|
"%s: Constant interpretation failed (2) - %s\n",
|
|
Op->Asl.ParseOpName, AcpiFormatException (Status));
|
|
}
|
|
|
|
return (Status);
|
|
}
|