526 lines
14 KiB
C
526 lines
14 KiB
C
/******************************************************************************
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*
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* Module Name: aslbtypes - Support for bitfield types
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2011, 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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#define _COMPONENT ACPI_COMPILER
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ACPI_MODULE_NAME ("aslbtypes")
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/* Local prototypes */
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static UINT32
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AnMapEtypeToBtype (
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UINT32 Etype);
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/*******************************************************************************
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*
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* FUNCTION: AnMapArgTypeToBtype
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*
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* PARAMETERS: ArgType - The ARGI required type(s) for this
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* argument, from the opcode info table
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*
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* RETURN: The corresponding Bit-encoded types
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*
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* DESCRIPTION: Convert an encoded ARGI required argument type code into a
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* bitfield type code. Implements the implicit source conversion
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* rules.
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*
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******************************************************************************/
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UINT32
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AnMapArgTypeToBtype (
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UINT32 ArgType)
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{
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switch (ArgType)
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{
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/* Simple types */
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case ARGI_ANYTYPE:
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return (ACPI_BTYPE_OBJECTS_AND_REFS);
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case ARGI_PACKAGE:
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return (ACPI_BTYPE_PACKAGE);
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case ARGI_EVENT:
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return (ACPI_BTYPE_EVENT);
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case ARGI_MUTEX:
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return (ACPI_BTYPE_MUTEX);
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case ARGI_DDBHANDLE:
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/*
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* DDBHandleObject := SuperName
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* ACPI_BTYPE_REFERENCE: Index reference as parameter of Load/Unload
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*/
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return (ACPI_BTYPE_DDB_HANDLE | ACPI_BTYPE_REFERENCE);
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/* Interchangeable types */
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/*
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* Source conversion rules:
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* Integer, String, and Buffer are all interchangeable
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*/
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case ARGI_INTEGER:
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case ARGI_STRING:
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case ARGI_BUFFER:
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case ARGI_BUFFER_OR_STRING:
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case ARGI_COMPUTEDATA:
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return (ACPI_BTYPE_COMPUTE_DATA);
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/* References */
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case ARGI_INTEGER_REF:
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return (ACPI_BTYPE_INTEGER);
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case ARGI_OBJECT_REF:
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return (ACPI_BTYPE_ALL_OBJECTS);
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case ARGI_DEVICE_REF:
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return (ACPI_BTYPE_DEVICE_OBJECTS);
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case ARGI_REFERENCE:
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return (ACPI_BTYPE_REFERENCE);
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case ARGI_TARGETREF:
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case ARGI_FIXED_TARGET:
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case ARGI_SIMPLE_TARGET:
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return (ACPI_BTYPE_OBJECTS_AND_REFS);
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/* Complex types */
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case ARGI_DATAOBJECT:
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/*
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* Buffer, string, package or reference to a Op -
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* Used only by SizeOf operator
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*/
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return (ACPI_BTYPE_STRING | ACPI_BTYPE_BUFFER |
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ACPI_BTYPE_PACKAGE | ACPI_BTYPE_REFERENCE);
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case ARGI_COMPLEXOBJ:
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/* Buffer, String, or package */
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return (ACPI_BTYPE_STRING | ACPI_BTYPE_BUFFER | ACPI_BTYPE_PACKAGE);
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case ARGI_REF_OR_STRING:
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return (ACPI_BTYPE_STRING | ACPI_BTYPE_REFERENCE);
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case ARGI_REGION_OR_BUFFER:
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/* Used by Load() only. Allow buffers in addition to regions/fields */
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return (ACPI_BTYPE_REGION | ACPI_BTYPE_BUFFER | ACPI_BTYPE_FIELD_UNIT);
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case ARGI_DATAREFOBJ:
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return (ACPI_BTYPE_INTEGER |ACPI_BTYPE_STRING | ACPI_BTYPE_BUFFER |
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ACPI_BTYPE_PACKAGE | ACPI_BTYPE_REFERENCE | ACPI_BTYPE_DDB_HANDLE);
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default:
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break;
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}
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return (ACPI_BTYPE_OBJECTS_AND_REFS);
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}
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/*******************************************************************************
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*
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* FUNCTION: AnMapEtypeToBtype
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*
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* PARAMETERS: Etype - Encoded ACPI Type
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*
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* RETURN: Btype corresponding to the Etype
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*
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* DESCRIPTION: Convert an encoded ACPI type to a bitfield type applying the
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* operand conversion rules. In other words, returns the type(s)
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* this Etype is implicitly converted to during interpretation.
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*
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******************************************************************************/
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static UINT32
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AnMapEtypeToBtype (
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UINT32 Etype)
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{
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if (Etype == ACPI_TYPE_ANY)
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{
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return (ACPI_BTYPE_OBJECTS_AND_REFS);
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}
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/* Try the standard ACPI data types */
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if (Etype <= ACPI_TYPE_EXTERNAL_MAX)
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{
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/*
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* This switch statement implements the allowed operand conversion
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* rules as per the "ASL Data Types" section of the ACPI
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* specification.
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*/
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switch (Etype)
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{
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case ACPI_TYPE_INTEGER:
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return (ACPI_BTYPE_COMPUTE_DATA | ACPI_BTYPE_DDB_HANDLE);
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case ACPI_TYPE_STRING:
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case ACPI_TYPE_BUFFER:
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return (ACPI_BTYPE_COMPUTE_DATA);
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case ACPI_TYPE_PACKAGE:
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return (ACPI_BTYPE_PACKAGE);
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case ACPI_TYPE_FIELD_UNIT:
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return (ACPI_BTYPE_COMPUTE_DATA | ACPI_BTYPE_FIELD_UNIT);
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case ACPI_TYPE_BUFFER_FIELD:
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return (ACPI_BTYPE_COMPUTE_DATA | ACPI_BTYPE_BUFFER_FIELD);
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case ACPI_TYPE_DDB_HANDLE:
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return (ACPI_BTYPE_INTEGER | ACPI_BTYPE_DDB_HANDLE);
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case ACPI_BTYPE_DEBUG_OBJECT:
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/* Cannot be used as a source operand */
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return (0);
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default:
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return (1 << (Etype - 1));
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}
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}
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/* Try the internal data types */
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switch (Etype)
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{
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case ACPI_TYPE_LOCAL_REGION_FIELD:
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case ACPI_TYPE_LOCAL_BANK_FIELD:
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case ACPI_TYPE_LOCAL_INDEX_FIELD:
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/* Named fields can be either Integer/Buffer/String */
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return (ACPI_BTYPE_COMPUTE_DATA | ACPI_BTYPE_FIELD_UNIT);
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case ACPI_TYPE_LOCAL_ALIAS:
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return (ACPI_BTYPE_INTEGER);
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case ACPI_TYPE_LOCAL_RESOURCE:
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case ACPI_TYPE_LOCAL_RESOURCE_FIELD:
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return (ACPI_BTYPE_REFERENCE);
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default:
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printf ("Unhandled encoded type: %X\n", Etype);
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return (0);
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: AnFormatBtype
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*
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* PARAMETERS: Btype - Bitfield of ACPI types
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* Buffer - Where to put the ascii string
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*
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* RETURN: None.
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*
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* DESCRIPTION: Convert a Btype to a string of ACPI types
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*
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******************************************************************************/
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void
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AnFormatBtype (
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char *Buffer,
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UINT32 Btype)
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{
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UINT32 Type;
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BOOLEAN First = TRUE;
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*Buffer = 0;
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if (Btype == 0)
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{
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strcat (Buffer, "NoReturnValue");
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return;
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}
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for (Type = 1; Type <= ACPI_TYPE_EXTERNAL_MAX; Type++)
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{
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if (Btype & 0x00000001)
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{
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if (!First)
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{
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strcat (Buffer, "|");
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}
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First = FALSE;
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strcat (Buffer, AcpiUtGetTypeName (Type));
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}
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Btype >>= 1;
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}
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if (Btype & 0x00000001)
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{
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if (!First)
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{
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strcat (Buffer, "|");
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}
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First = FALSE;
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strcat (Buffer, "Reference");
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}
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Btype >>= 1;
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if (Btype & 0x00000001)
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{
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if (!First)
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{
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strcat (Buffer, "|");
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}
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First = FALSE;
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strcat (Buffer, "Resource");
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: AnGetBtype
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*
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* PARAMETERS: Op - Parse node whose type will be returned.
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*
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* RETURN: The Btype associated with the Op.
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*
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* DESCRIPTION: Get the (bitfield) ACPI type associated with the parse node.
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* Handles the case where the node is a name or method call and
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* the actual type must be obtained from the namespace node.
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*
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******************************************************************************/
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UINT32
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AnGetBtype (
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ACPI_PARSE_OBJECT *Op)
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{
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ACPI_NAMESPACE_NODE *Node;
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ACPI_PARSE_OBJECT *ReferencedNode;
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UINT32 ThisNodeBtype = 0;
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if ((Op->Asl.ParseOpcode == PARSEOP_NAMESEG) ||
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(Op->Asl.ParseOpcode == PARSEOP_NAMESTRING) ||
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(Op->Asl.ParseOpcode == PARSEOP_METHODCALL))
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{
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Node = Op->Asl.Node;
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if (!Node)
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{
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DbgPrint (ASL_DEBUG_OUTPUT,
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"No attached Nsnode: [%s] at line %u name [%s], ignoring typecheck\n",
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Op->Asl.ParseOpName, Op->Asl.LineNumber,
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Op->Asl.ExternalName);
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return (ACPI_UINT32_MAX);
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}
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ThisNodeBtype = AnMapEtypeToBtype (Node->Type);
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if (!ThisNodeBtype)
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{
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AslError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL, Op,
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"could not map type");
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}
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/*
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* Since it was a named reference, enable the
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* reference bit also
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*/
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ThisNodeBtype |= ACPI_BTYPE_REFERENCE;
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if (Op->Asl.ParseOpcode == PARSEOP_METHODCALL)
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{
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ReferencedNode = Node->Op;
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if (!ReferencedNode)
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{
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/* Check for an internal method */
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if (AnIsInternalMethod (Op))
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{
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return (AnGetInternalMethodReturnType (Op));
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}
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AslError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL, Op,
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"null Op pointer");
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return (ACPI_UINT32_MAX);
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}
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if (ReferencedNode->Asl.CompileFlags & NODE_METHOD_TYPED)
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{
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ThisNodeBtype = ReferencedNode->Asl.AcpiBtype;
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}
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else
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{
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return (ACPI_UINT32_MAX -1);
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}
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}
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}
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else
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{
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ThisNodeBtype = Op->Asl.AcpiBtype;
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}
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return (ThisNodeBtype);
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}
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/*******************************************************************************
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*
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* FUNCTION: AnMapObjTypeToBtype
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*
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* PARAMETERS: Op - A parse node
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*
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* RETURN: A Btype
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*
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* DESCRIPTION: Map object to the associated "Btype"
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*
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******************************************************************************/
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UINT32
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AnMapObjTypeToBtype (
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ACPI_PARSE_OBJECT *Op)
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{
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switch (Op->Asl.ParseOpcode)
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{
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case PARSEOP_OBJECTTYPE_BFF: /* "BuffFieldObj" */
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return (ACPI_BTYPE_BUFFER_FIELD);
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case PARSEOP_OBJECTTYPE_BUF: /* "BuffObj" */
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return (ACPI_BTYPE_BUFFER);
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case PARSEOP_OBJECTTYPE_DDB: /* "DDBHandleObj" */
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return (ACPI_BTYPE_DDB_HANDLE);
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case PARSEOP_OBJECTTYPE_DEV: /* "DeviceObj" */
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return (ACPI_BTYPE_DEVICE);
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case PARSEOP_OBJECTTYPE_EVT: /* "EventObj" */
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return (ACPI_BTYPE_EVENT);
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case PARSEOP_OBJECTTYPE_FLD: /* "FieldUnitObj" */
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return (ACPI_BTYPE_FIELD_UNIT);
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case PARSEOP_OBJECTTYPE_INT: /* "IntObj" */
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return (ACPI_BTYPE_INTEGER);
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case PARSEOP_OBJECTTYPE_MTH: /* "MethodObj" */
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return (ACPI_BTYPE_METHOD);
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case PARSEOP_OBJECTTYPE_MTX: /* "MutexObj" */
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return (ACPI_BTYPE_MUTEX);
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case PARSEOP_OBJECTTYPE_OPR: /* "OpRegionObj" */
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return (ACPI_BTYPE_REGION);
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case PARSEOP_OBJECTTYPE_PKG: /* "PkgObj" */
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return (ACPI_BTYPE_PACKAGE);
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case PARSEOP_OBJECTTYPE_POW: /* "PowerResObj" */
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return (ACPI_BTYPE_POWER);
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case PARSEOP_OBJECTTYPE_STR: /* "StrObj" */
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return (ACPI_BTYPE_STRING);
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case PARSEOP_OBJECTTYPE_THZ: /* "ThermalZoneObj" */
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return (ACPI_BTYPE_THERMAL);
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case PARSEOP_OBJECTTYPE_UNK: /* "UnknownObj" */
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return (ACPI_BTYPE_OBJECTS_AND_REFS);
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default:
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return (0);
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}
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}
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#ifdef ACPI_OBSOLETE_FUNCTIONS
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/*******************************************************************************
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*
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* FUNCTION: AnMapBtypeToEtype
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*
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* PARAMETERS: Btype - Bitfield of ACPI types
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*
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* RETURN: The Etype corresponding the the Btype
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*
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* DESCRIPTION: Convert a bitfield type to an encoded type
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*
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******************************************************************************/
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UINT32
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AnMapBtypeToEtype (
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UINT32 Btype)
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{
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UINT32 i;
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UINT32 Etype;
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if (Btype == 0)
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{
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return (0);
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}
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Etype = 1;
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for (i = 1; i < Btype; i *= 2)
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{
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Etype++;
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}
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return (Etype);
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}
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#endif
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