/******************************************************************************
*
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2016, 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 "acpi.h"
#include "accommon.h"
#include "amlcode.h"
#include "acparser.h"
#include "acinterp.h"
#include "acnamesp.h"
ACPI_MODULE_NAME ("exresop")
/* Local prototypes */
static ACPI_STATUS
void *Object);
/*******************************************************************************
*
* FUNCTION: AcpiExCheckObjectType
*
* PARAMETERS: TypeNeeded Object type needed
* ThisType Actual object type
* Object Object pointer
*
* RETURN: Status
*
* DESCRIPTION: Check required type against actual type
*
******************************************************************************/
static ACPI_STATUS
void *Object)
{
if (TypeNeeded == ACPI_TYPE_ANY)
{
/* All types OK, so we don't perform any typechecks */
return (AE_OK);
}
if (TypeNeeded == ACPI_TYPE_LOCAL_REFERENCE)
{
/*
* Allow the AML "Constant" opcodes (Zero, One, etc.) to be reference
* objects and thus allow them to be targets. (As per the ACPI
* specification, a store to a constant is a noop.)
*/
if ((ThisType == ACPI_TYPE_INTEGER) &&
{
return (AE_OK);
}
}
if (TypeNeeded != ThisType)
{
"Needed type [%s], found [%s] %p",
return (AE_AML_OPERAND_TYPE);
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiExResolveOperands
*
* PARAMETERS: Opcode - Opcode being interpreted
* StackPtr - Pointer to the operand stack to be
* resolved
* WalkState - Current state
*
* RETURN: Status
*
* DESCRIPTION: Convert multiple input operands to the types required by the
* target operator.
*
* Each 5-bit group in ArgTypes represents one required
* operand and indicates the required Type. The corresponding operand
* will be converted to the required type if possible, otherwise we
* abort with an exception.
*
******************************************************************************/
{
{
}
if (ArgTypes == ARGI_INVALID_OPCODE)
{
Opcode));
}
"Opcode %X [%s] RequiredOperandTypes=%8.8X\n",
/*
* Normal exit is with (ArgTypes == 0) at end of argument list.
* Function will return an exception from within the loop upon
* finding an entry which is not (or cannot be converted
* to) the required type; if stack underflows; or upon
* finding a NULL stack entry (which should not happen).
*/
while (GET_CURRENT_ARG_TYPE (ArgTypes))
{
{
StackPtr));
}
/* Extract useful items */
/* Decode the descriptor type */
switch (ACPI_GET_DESCRIPTOR_TYPE (ObjDesc))
{
case ACPI_DESC_TYPE_NAMED:
/* Namespace Node */
/*
* Resolve an alias object. The construction of these objects
* guarantees that there is only one level of alias indirection;
* thus, the attached object is always the aliased namespace node
*/
if (ObjectType == ACPI_TYPE_LOCAL_ALIAS)
{
(ACPI_NAMESPACE_NODE *) ObjDesc);
}
break;
case ACPI_DESC_TYPE_OPERAND:
/* ACPI internal object */
/* Check for bad ACPI_OBJECT_TYPE */
if (!AcpiUtValidObjectType (ObjectType))
{
"Bad operand object type [0x%X]", ObjectType));
}
{
/* Validate the Reference */
{
case ACPI_REFCLASS_DEBUG:
/*lint -fallthrough */
case ACPI_REFCLASS_ARG:
case ACPI_REFCLASS_LOCAL:
case ACPI_REFCLASS_INDEX:
case ACPI_REFCLASS_REFOF:
case ACPI_REFCLASS_TABLE: /* DdbHandle from LOAD_OP or LOAD_TABLE_OP */
case ACPI_REFCLASS_NAME: /* Reference to a named object */
"Operand is a Reference, Class [%s] %2.2X\n",
break;
default:
"Unknown Reference Class 0x%2.2X in %p",
}
}
break;
default:
/* Invalid descriptor */
}
/* Get one argument type, point to the next */
/*
* Handle cases where the object does not need to be
* resolved to a value
*/
switch (ThisArgType)
{
case ARGI_REF_OR_STRING: /* Can be a String or Reference */
if ((ACPI_GET_DESCRIPTOR_TYPE (ObjDesc) ==
{
/*
* String found - the string references a named object and
* must be resolved to a node
*/
goto NextOperand;
}
/*
* Else not a string - fall through to the normal Reference
* case below
*/
/*lint -fallthrough */
case ARGI_REFERENCE: /* References: */
case ARGI_INTEGER_REF:
case ARGI_OBJECT_REF:
case ARGI_DEVICE_REF:
case ARGI_TARGETREF: /* Allows implicit conversion rules before store */
case ARGI_FIXED_TARGET: /* No implicit conversion before store to target */
case ARGI_SIMPLE_TARGET: /* Name, Local, or Arg - no implicit conversion */
case ARGI_STORE_TARGET:
/*
* Need an operand of type ACPI_TYPE_LOCAL_REFERENCE
* A Namespace Node is OK as-is
*/
{
goto NextOperand;
}
if (ACPI_FAILURE (Status))
{
}
goto NextOperand;
case ARGI_DATAREFOBJ: /* Store operator only */
/*
* We don't want to resolve IndexOp reference objects during
* a store because this would be an implicit DeRefOf operation.
* Instead, we just want to store the reference object.
* -- All others must be resolved below.
*/
if ((Opcode == AML_STORE_OP) &&
{
goto NextOperand;
}
break;
default:
/* All cases covered above */
break;
}
/*
* Resolve this object to a value
*/
if (ACPI_FAILURE (Status))
{
}
/* Get the resolved object */
/*
* Check the resulting object (value) type
*/
switch (ThisArgType)
{
/*
* For the simple cases, only one type of resolved object
* is allowed
*/
case ARGI_MUTEX:
/* Need an operand of type ACPI_TYPE_MUTEX */
break;
case ARGI_EVENT:
/* Need an operand of type ACPI_TYPE_EVENT */
break;
case ARGI_PACKAGE: /* Package */
/* Need an operand of type ACPI_TYPE_PACKAGE */
break;
case ARGI_ANYTYPE:
/* Any operand type will do */
break;
case ARGI_DDBHANDLE:
/* Need an operand of type ACPI_TYPE_DDB_HANDLE */
break;
/*
* The more complex cases allow multiple resolved object types
*/
case ARGI_INTEGER:
/*
* Need an operand of type ACPI_TYPE_INTEGER,
* But we can implicitly convert from a STRING or BUFFER
* Aka - "Implicit Source Operand Conversion"
*/
if (ACPI_FAILURE (Status))
{
{
}
}
{
}
goto NextOperand;
case ARGI_BUFFER:
/*
* Need an operand of type ACPI_TYPE_BUFFER,
* But we can implicitly convert from a STRING or INTEGER
* Aka - "Implicit Source Operand Conversion"
*/
if (ACPI_FAILURE (Status))
{
{
}
}
{
}
goto NextOperand;
case ARGI_STRING:
/*
* Need an operand of type ACPI_TYPE_STRING,
* But we can implicitly convert from a BUFFER or INTEGER
* Aka - "Implicit Source Operand Conversion"
*/
if (ACPI_FAILURE (Status))
{
{
}
}
{
}
goto NextOperand;
case ARGI_COMPUTEDATA:
/* Need an operand of type INTEGER, STRING or BUFFER */
{
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
/* Valid operand */
break;
default:
}
goto NextOperand;
case ARGI_BUFFER_OR_STRING:
/* Need an operand of type STRING or BUFFER */
{
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
/* Valid operand */
break;
case ACPI_TYPE_INTEGER:
/* Highest priority conversion is to type Buffer */
if (ACPI_FAILURE (Status))
{
}
{
}
break;
default:
}
goto NextOperand;
case ARGI_DATAOBJECT:
/*
* ARGI_DATAOBJECT is only used by the SizeOf operator.
* Need a buffer, string, package, or RefOf reference.
*
* The only reference allowed here is a direct reference to
* a namespace node.
*/
{
case ACPI_TYPE_PACKAGE:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
/* Valid operand */
break;
default:
}
goto NextOperand;
case ARGI_COMPLEXOBJ:
/* Need a buffer or package or (ACPI 2.0) String */
{
case ACPI_TYPE_PACKAGE:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
/* Valid operand */
break;
default:
}
goto NextOperand;
case ARGI_REGION_OR_BUFFER: /* Used by Load() only */
/*
* Need an operand of type REGION or a BUFFER
* (which could be a resolved region field)
*/
{
case ACPI_TYPE_BUFFER:
case ACPI_TYPE_REGION:
/* Valid operand */
break;
default:
}
goto NextOperand;
case ARGI_DATAREFOBJ:
/* Used by the Store() operator only */
{
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_PACKAGE:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
case ACPI_TYPE_BUFFER_FIELD:
case ACPI_TYPE_DDB_HANDLE:
/* Valid operand */
break;
default:
{
/*
* Enable original behavior of Store(), allowing any
* and all objects as the source operand. The ACPI
* spec does not allow this, however.
*/
break;
}
if (TargetOp == AML_DEBUG_OP)
{
/* Allow store of any object to the Debug object */
break;
}
", found [%s] %p",
}
goto NextOperand;
default:
/* Unknown type */
"Internal - Unknown ARGI (required operand) type 0x%X",
ThisArgType));
}
/*
* Make sure that the original object was resolved to the
* required object type (Simple cases only).
*/
if (ACPI_FAILURE (Status))
{
}
/*
* If more operands needed, decrement StackPtr to point
* to next operand on stack
*/
if (GET_CURRENT_ARG_TYPE (ArgTypes))
{
StackPtr--;
}
}
}