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| Current File : //usr/src/sys/contrib/dev/acpica/compiler/aslbtypes.c |
/******************************************************************************
*
* Module Name: aslbtypes - Support for bitfield types
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2011, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*/
#include <contrib/dev/acpica/compiler/aslcompiler.h>
#include "aslcompiler.y.h"
#include <contrib/dev/acpica/include/amlcode.h>
#define _COMPONENT ACPI_COMPILER
ACPI_MODULE_NAME ("aslbtypes")
/* Local prototypes */
static UINT32
AnMapEtypeToBtype (
UINT32 Etype);
/*******************************************************************************
*
* FUNCTION: AnMapArgTypeToBtype
*
* PARAMETERS: ArgType - The ARGI required type(s) for this
* argument, from the opcode info table
*
* RETURN: The corresponding Bit-encoded types
*
* DESCRIPTION: Convert an encoded ARGI required argument type code into a
* bitfield type code. Implements the implicit source conversion
* rules.
*
******************************************************************************/
UINT32
AnMapArgTypeToBtype (
UINT32 ArgType)
{
switch (ArgType)
{
/* Simple types */
case ARGI_ANYTYPE:
return (ACPI_BTYPE_OBJECTS_AND_REFS);
case ARGI_PACKAGE:
return (ACPI_BTYPE_PACKAGE);
case ARGI_EVENT:
return (ACPI_BTYPE_EVENT);
case ARGI_MUTEX:
return (ACPI_BTYPE_MUTEX);
case ARGI_DDBHANDLE:
/*
* DDBHandleObject := SuperName
* ACPI_BTYPE_REFERENCE: Index reference as parameter of Load/Unload
*/
return (ACPI_BTYPE_DDB_HANDLE | ACPI_BTYPE_REFERENCE);
/* Interchangeable types */
/*
* Source conversion rules:
* Integer, String, and Buffer are all interchangeable
*/
case ARGI_INTEGER:
case ARGI_STRING:
case ARGI_BUFFER:
case ARGI_BUFFER_OR_STRING:
case ARGI_COMPUTEDATA:
return (ACPI_BTYPE_COMPUTE_DATA);
/* References */
case ARGI_INTEGER_REF:
return (ACPI_BTYPE_INTEGER);
case ARGI_OBJECT_REF:
return (ACPI_BTYPE_ALL_OBJECTS);
case ARGI_DEVICE_REF:
return (ACPI_BTYPE_DEVICE_OBJECTS);
case ARGI_REFERENCE:
return (ACPI_BTYPE_REFERENCE);
case ARGI_TARGETREF:
case ARGI_FIXED_TARGET:
case ARGI_SIMPLE_TARGET:
return (ACPI_BTYPE_OBJECTS_AND_REFS);
/* Complex types */
case ARGI_DATAOBJECT:
/*
* Buffer, string, package or reference to a Op -
* Used only by SizeOf operator
*/
return (ACPI_BTYPE_STRING | ACPI_BTYPE_BUFFER |
ACPI_BTYPE_PACKAGE | ACPI_BTYPE_REFERENCE);
case ARGI_COMPLEXOBJ:
/* Buffer, String, or package */
return (ACPI_BTYPE_STRING | ACPI_BTYPE_BUFFER | ACPI_BTYPE_PACKAGE);
case ARGI_REF_OR_STRING:
return (ACPI_BTYPE_STRING | ACPI_BTYPE_REFERENCE);
case ARGI_REGION_OR_BUFFER:
/* Used by Load() only. Allow buffers in addition to regions/fields */
return (ACPI_BTYPE_REGION | ACPI_BTYPE_BUFFER | ACPI_BTYPE_FIELD_UNIT);
case ARGI_DATAREFOBJ:
return (ACPI_BTYPE_INTEGER |ACPI_BTYPE_STRING | ACPI_BTYPE_BUFFER |
ACPI_BTYPE_PACKAGE | ACPI_BTYPE_REFERENCE | ACPI_BTYPE_DDB_HANDLE);
default:
break;
}
return (ACPI_BTYPE_OBJECTS_AND_REFS);
}
/*******************************************************************************
*
* FUNCTION: AnMapEtypeToBtype
*
* PARAMETERS: Etype - Encoded ACPI Type
*
* RETURN: Btype corresponding to the Etype
*
* DESCRIPTION: Convert an encoded ACPI type to a bitfield type applying the
* operand conversion rules. In other words, returns the type(s)
* this Etype is implicitly converted to during interpretation.
*
******************************************************************************/
static UINT32
AnMapEtypeToBtype (
UINT32 Etype)
{
if (Etype == ACPI_TYPE_ANY)
{
return (ACPI_BTYPE_OBJECTS_AND_REFS);
}
/* Try the standard ACPI data types */
if (Etype <= ACPI_TYPE_EXTERNAL_MAX)
{
/*
* This switch statement implements the allowed operand conversion
* rules as per the "ASL Data Types" section of the ACPI
* specification.
*/
switch (Etype)
{
case ACPI_TYPE_INTEGER:
return (ACPI_BTYPE_COMPUTE_DATA | ACPI_BTYPE_DDB_HANDLE);
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
return (ACPI_BTYPE_COMPUTE_DATA);
case ACPI_TYPE_PACKAGE:
return (ACPI_BTYPE_PACKAGE);
case ACPI_TYPE_FIELD_UNIT:
return (ACPI_BTYPE_COMPUTE_DATA | ACPI_BTYPE_FIELD_UNIT);
case ACPI_TYPE_BUFFER_FIELD:
return (ACPI_BTYPE_COMPUTE_DATA | ACPI_BTYPE_BUFFER_FIELD);
case ACPI_TYPE_DDB_HANDLE:
return (ACPI_BTYPE_INTEGER | ACPI_BTYPE_DDB_HANDLE);
case ACPI_BTYPE_DEBUG_OBJECT:
/* Cannot be used as a source operand */
return (0);
default:
return (1 << (Etype - 1));
}
}
/* Try the internal data types */
switch (Etype)
{
case ACPI_TYPE_LOCAL_REGION_FIELD:
case ACPI_TYPE_LOCAL_BANK_FIELD:
case ACPI_TYPE_LOCAL_INDEX_FIELD:
/* Named fields can be either Integer/Buffer/String */
return (ACPI_BTYPE_COMPUTE_DATA | ACPI_BTYPE_FIELD_UNIT);
case ACPI_TYPE_LOCAL_ALIAS:
return (ACPI_BTYPE_INTEGER);
case ACPI_TYPE_LOCAL_RESOURCE:
case ACPI_TYPE_LOCAL_RESOURCE_FIELD:
return (ACPI_BTYPE_REFERENCE);
default:
printf ("Unhandled encoded type: %X\n", Etype);
return (0);
}
}
/*******************************************************************************
*
* FUNCTION: AnFormatBtype
*
* PARAMETERS: Btype - Bitfield of ACPI types
* Buffer - Where to put the ascii string
*
* RETURN: None.
*
* DESCRIPTION: Convert a Btype to a string of ACPI types
*
******************************************************************************/
void
AnFormatBtype (
char *Buffer,
UINT32 Btype)
{
UINT32 Type;
BOOLEAN First = TRUE;
*Buffer = 0;
if (Btype == 0)
{
strcat (Buffer, "NoReturnValue");
return;
}
for (Type = 1; Type <= ACPI_TYPE_EXTERNAL_MAX; Type++)
{
if (Btype & 0x00000001)
{
if (!First)
{
strcat (Buffer, "|");
}
First = FALSE;
strcat (Buffer, AcpiUtGetTypeName (Type));
}
Btype >>= 1;
}
if (Btype & 0x00000001)
{
if (!First)
{
strcat (Buffer, "|");
}
First = FALSE;
strcat (Buffer, "Reference");
}
Btype >>= 1;
if (Btype & 0x00000001)
{
if (!First)
{
strcat (Buffer, "|");
}
First = FALSE;
strcat (Buffer, "Resource");
}
}
/*******************************************************************************
*
* FUNCTION: AnGetBtype
*
* PARAMETERS: Op - Parse node whose type will be returned.
*
* RETURN: The Btype associated with the Op.
*
* DESCRIPTION: Get the (bitfield) ACPI type associated with the parse node.
* Handles the case where the node is a name or method call and
* the actual type must be obtained from the namespace node.
*
******************************************************************************/
UINT32
AnGetBtype (
ACPI_PARSE_OBJECT *Op)
{
ACPI_NAMESPACE_NODE *Node;
ACPI_PARSE_OBJECT *ReferencedNode;
UINT32 ThisNodeBtype = 0;
if ((Op->Asl.ParseOpcode == PARSEOP_NAMESEG) ||
(Op->Asl.ParseOpcode == PARSEOP_NAMESTRING) ||
(Op->Asl.ParseOpcode == PARSEOP_METHODCALL))
{
Node = Op->Asl.Node;
if (!Node)
{
DbgPrint (ASL_DEBUG_OUTPUT,
"No attached Nsnode: [%s] at line %u name [%s], ignoring typecheck\n",
Op->Asl.ParseOpName, Op->Asl.LineNumber,
Op->Asl.ExternalName);
return (ACPI_UINT32_MAX);
}
ThisNodeBtype = AnMapEtypeToBtype (Node->Type);
if (!ThisNodeBtype)
{
AslError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL, Op,
"could not map type");
}
/*
* Since it was a named reference, enable the
* reference bit also
*/
ThisNodeBtype |= ACPI_BTYPE_REFERENCE;
if (Op->Asl.ParseOpcode == PARSEOP_METHODCALL)
{
ReferencedNode = Node->Op;
if (!ReferencedNode)
{
/* Check for an internal method */
if (AnIsInternalMethod (Op))
{
return (AnGetInternalMethodReturnType (Op));
}
AslError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL, Op,
"null Op pointer");
return (ACPI_UINT32_MAX);
}
if (ReferencedNode->Asl.CompileFlags & NODE_METHOD_TYPED)
{
ThisNodeBtype = ReferencedNode->Asl.AcpiBtype;
}
else
{
return (ACPI_UINT32_MAX -1);
}
}
}
else
{
ThisNodeBtype = Op->Asl.AcpiBtype;
}
return (ThisNodeBtype);
}
/*******************************************************************************
*
* FUNCTION: AnMapObjTypeToBtype
*
* PARAMETERS: Op - A parse node
*
* RETURN: A Btype
*
* DESCRIPTION: Map object to the associated "Btype"
*
******************************************************************************/
UINT32
AnMapObjTypeToBtype (
ACPI_PARSE_OBJECT *Op)
{
switch (Op->Asl.ParseOpcode)
{
case PARSEOP_OBJECTTYPE_BFF: /* "BuffFieldObj" */
return (ACPI_BTYPE_BUFFER_FIELD);
case PARSEOP_OBJECTTYPE_BUF: /* "BuffObj" */
return (ACPI_BTYPE_BUFFER);
case PARSEOP_OBJECTTYPE_DDB: /* "DDBHandleObj" */
return (ACPI_BTYPE_DDB_HANDLE);
case PARSEOP_OBJECTTYPE_DEV: /* "DeviceObj" */
return (ACPI_BTYPE_DEVICE);
case PARSEOP_OBJECTTYPE_EVT: /* "EventObj" */
return (ACPI_BTYPE_EVENT);
case PARSEOP_OBJECTTYPE_FLD: /* "FieldUnitObj" */
return (ACPI_BTYPE_FIELD_UNIT);
case PARSEOP_OBJECTTYPE_INT: /* "IntObj" */
return (ACPI_BTYPE_INTEGER);
case PARSEOP_OBJECTTYPE_MTH: /* "MethodObj" */
return (ACPI_BTYPE_METHOD);
case PARSEOP_OBJECTTYPE_MTX: /* "MutexObj" */
return (ACPI_BTYPE_MUTEX);
case PARSEOP_OBJECTTYPE_OPR: /* "OpRegionObj" */
return (ACPI_BTYPE_REGION);
case PARSEOP_OBJECTTYPE_PKG: /* "PkgObj" */
return (ACPI_BTYPE_PACKAGE);
case PARSEOP_OBJECTTYPE_POW: /* "PowerResObj" */
return (ACPI_BTYPE_POWER);
case PARSEOP_OBJECTTYPE_STR: /* "StrObj" */
return (ACPI_BTYPE_STRING);
case PARSEOP_OBJECTTYPE_THZ: /* "ThermalZoneObj" */
return (ACPI_BTYPE_THERMAL);
case PARSEOP_OBJECTTYPE_UNK: /* "UnknownObj" */
return (ACPI_BTYPE_OBJECTS_AND_REFS);
default:
return (0);
}
}
#ifdef ACPI_OBSOLETE_FUNCTIONS
/*******************************************************************************
*
* FUNCTION: AnMapBtypeToEtype
*
* PARAMETERS: Btype - Bitfield of ACPI types
*
* RETURN: The Etype corresponding the the Btype
*
* DESCRIPTION: Convert a bitfield type to an encoded type
*
******************************************************************************/
UINT32
AnMapBtypeToEtype (
UINT32 Btype)
{
UINT32 i;
UINT32 Etype;
if (Btype == 0)
{
return (0);
}
Etype = 1;
for (i = 1; i < Btype; i *= 2)
{
Etype++;
}
return (Etype);
}
#endif