+++ /dev/null
-/******************************************************************************
- *
- * Module Name: nsconvert - Object conversions for objects returned by
- * predefined methods
- *
- *****************************************************************************/
-
-/*
- * Copyright (C) 2000 - 2017, 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 "acnamesp.h"
-#include "acinterp.h"
-#include "acpredef.h"
-#include "amlresrc.h"
-
-#define _COMPONENT ACPI_NAMESPACE
- ACPI_MODULE_NAME ("nsconvert")
-
-
-/*******************************************************************************
- *
- * FUNCTION: AcpiNsConvertToInteger
- *
- * PARAMETERS: OriginalObject - Object to be converted
- * ReturnObject - Where the new converted object is returned
- *
- * RETURN: Status. AE_OK if conversion was successful.
- *
- * DESCRIPTION: Attempt to convert a String/Buffer object to an Integer.
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiNsConvertToInteger (
- ACPI_OPERAND_OBJECT *OriginalObject,
- ACPI_OPERAND_OBJECT **ReturnObject)
-{
- ACPI_OPERAND_OBJECT *NewObject;
- ACPI_STATUS Status;
- UINT64 Value = 0;
- UINT32 i;
-
-
- switch (OriginalObject->Common.Type)
- {
- case ACPI_TYPE_STRING:
-
- /* String-to-Integer conversion */
-
- Status = AcpiUtStrtoul64 (OriginalObject->String.Pointer,
- AcpiGbl_IntegerByteWidth, &Value);
- if (ACPI_FAILURE (Status))
- {
- return (Status);
- }
- break;
-
- case ACPI_TYPE_BUFFER:
-
- /* Buffer-to-Integer conversion. Max buffer size is 64 bits. */
-
- if (OriginalObject->Buffer.Length > 8)
- {
- return (AE_AML_OPERAND_TYPE);
- }
-
- /* Extract each buffer byte to create the integer */
-
- for (i = 0; i < OriginalObject->Buffer.Length; i++)
- {
- Value |= ((UINT64)
- OriginalObject->Buffer.Pointer[i] << (i * 8));
- }
- break;
-
- default:
-
- return (AE_AML_OPERAND_TYPE);
- }
-
- NewObject = AcpiUtCreateIntegerObject (Value);
- if (!NewObject)
- {
- return (AE_NO_MEMORY);
- }
-
- *ReturnObject = NewObject;
- return (AE_OK);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: AcpiNsConvertToString
- *
- * PARAMETERS: OriginalObject - Object to be converted
- * ReturnObject - Where the new converted object is returned
- *
- * RETURN: Status. AE_OK if conversion was successful.
- *
- * DESCRIPTION: Attempt to convert a Integer/Buffer object to a String.
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiNsConvertToString (
- ACPI_OPERAND_OBJECT *OriginalObject,
- ACPI_OPERAND_OBJECT **ReturnObject)
-{
- ACPI_OPERAND_OBJECT *NewObject;
- ACPI_SIZE Length;
- ACPI_STATUS Status;
-
-
- switch (OriginalObject->Common.Type)
- {
- case ACPI_TYPE_INTEGER:
- /*
- * Integer-to-String conversion. Commonly, convert
- * an integer of value 0 to a NULL string. The last element of
- * _BIF and _BIX packages occasionally need this fix.
- */
- if (OriginalObject->Integer.Value == 0)
- {
- /* Allocate a new NULL string object */
-
- NewObject = AcpiUtCreateStringObject (0);
- if (!NewObject)
- {
- return (AE_NO_MEMORY);
- }
- }
- else
- {
- Status = AcpiExConvertToString (OriginalObject,
- &NewObject, ACPI_IMPLICIT_CONVERT_HEX);
- if (ACPI_FAILURE (Status))
- {
- return (Status);
- }
- }
- break;
-
- case ACPI_TYPE_BUFFER:
- /*
- * Buffer-to-String conversion. Use a ToString
- * conversion, no transform performed on the buffer data. The best
- * example of this is the _BIF method, where the string data from
- * the battery is often (incorrectly) returned as buffer object(s).
- */
- Length = 0;
- while ((Length < OriginalObject->Buffer.Length) &&
- (OriginalObject->Buffer.Pointer[Length]))
- {
- Length++;
- }
-
- /* Allocate a new string object */
-
- NewObject = AcpiUtCreateStringObject (Length);
- if (!NewObject)
- {
- return (AE_NO_MEMORY);
- }
-
- /*
- * Copy the raw buffer data with no transform. String is already NULL
- * terminated at Length+1.
- */
- memcpy (NewObject->String.Pointer,
- OriginalObject->Buffer.Pointer, Length);
- break;
-
- default:
-
- return (AE_AML_OPERAND_TYPE);
- }
-
- *ReturnObject = NewObject;
- return (AE_OK);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: AcpiNsConvertToBuffer
- *
- * PARAMETERS: OriginalObject - Object to be converted
- * ReturnObject - Where the new converted object is returned
- *
- * RETURN: Status. AE_OK if conversion was successful.
- *
- * DESCRIPTION: Attempt to convert a Integer/String/Package object to a Buffer.
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiNsConvertToBuffer (
- ACPI_OPERAND_OBJECT *OriginalObject,
- ACPI_OPERAND_OBJECT **ReturnObject)
-{
- ACPI_OPERAND_OBJECT *NewObject;
- ACPI_STATUS Status;
- ACPI_OPERAND_OBJECT **Elements;
- UINT32 *DwordBuffer;
- UINT32 Count;
- UINT32 i;
-
-
- switch (OriginalObject->Common.Type)
- {
- case ACPI_TYPE_INTEGER:
- /*
- * Integer-to-Buffer conversion.
- * Convert the Integer to a packed-byte buffer. _MAT and other
- * objects need this sometimes, if a read has been performed on a
- * Field object that is less than or equal to the global integer
- * size (32 or 64 bits).
- */
- Status = AcpiExConvertToBuffer (OriginalObject, &NewObject);
- if (ACPI_FAILURE (Status))
- {
- return (Status);
- }
- break;
-
- case ACPI_TYPE_STRING:
-
- /* String-to-Buffer conversion. Simple data copy */
-
- NewObject = AcpiUtCreateBufferObject
- (OriginalObject->String.Length);
- if (!NewObject)
- {
- return (AE_NO_MEMORY);
- }
-
- memcpy (NewObject->Buffer.Pointer,
- OriginalObject->String.Pointer, OriginalObject->String.Length);
- break;
-
- case ACPI_TYPE_PACKAGE:
- /*
- * This case is often seen for predefined names that must return a
- * Buffer object with multiple DWORD integers within. For example,
- * _FDE and _GTM. The Package can be converted to a Buffer.
- */
-
- /* All elements of the Package must be integers */
-
- Elements = OriginalObject->Package.Elements;
- Count = OriginalObject->Package.Count;
-
- for (i = 0; i < Count; i++)
- {
- if ((!*Elements) ||
- ((*Elements)->Common.Type != ACPI_TYPE_INTEGER))
- {
- return (AE_AML_OPERAND_TYPE);
- }
- Elements++;
- }
-
- /* Create the new buffer object to replace the Package */
-
- NewObject = AcpiUtCreateBufferObject (ACPI_MUL_4 (Count));
- if (!NewObject)
- {
- return (AE_NO_MEMORY);
- }
-
- /* Copy the package elements (integers) to the buffer as DWORDs */
-
- Elements = OriginalObject->Package.Elements;
- DwordBuffer = ACPI_CAST_PTR (UINT32, NewObject->Buffer.Pointer);
-
- for (i = 0; i < Count; i++)
- {
- *DwordBuffer = (UINT32) (*Elements)->Integer.Value;
- DwordBuffer++;
- Elements++;
- }
- break;
-
- default:
-
- return (AE_AML_OPERAND_TYPE);
- }
-
- *ReturnObject = NewObject;
- return (AE_OK);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: AcpiNsConvertToUnicode
- *
- * PARAMETERS: Scope - Namespace node for the method/object
- * OriginalObject - ASCII String Object to be converted
- * ReturnObject - Where the new converted object is returned
- *
- * RETURN: Status. AE_OK if conversion was successful.
- *
- * DESCRIPTION: Attempt to convert a String object to a Unicode string Buffer.
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiNsConvertToUnicode (
- ACPI_NAMESPACE_NODE *Scope,
- ACPI_OPERAND_OBJECT *OriginalObject,
- ACPI_OPERAND_OBJECT **ReturnObject)
-{
- ACPI_OPERAND_OBJECT *NewObject;
- char *AsciiString;
- UINT16 *UnicodeBuffer;
- UINT32 UnicodeLength;
- UINT32 i;
-
-
- if (!OriginalObject)
- {
- return (AE_OK);
- }
-
- /* If a Buffer was returned, it must be at least two bytes long */
-
- if (OriginalObject->Common.Type == ACPI_TYPE_BUFFER)
- {
- if (OriginalObject->Buffer.Length < 2)
- {
- return (AE_AML_OPERAND_VALUE);
- }
-
- *ReturnObject = NULL;
- return (AE_OK);
- }
-
- /*
- * The original object is an ASCII string. Convert this string to
- * a unicode buffer.
- */
- AsciiString = OriginalObject->String.Pointer;
- UnicodeLength = (OriginalObject->String.Length * 2) + 2;
-
- /* Create a new buffer object for the Unicode data */
-
- NewObject = AcpiUtCreateBufferObject (UnicodeLength);
- if (!NewObject)
- {
- return (AE_NO_MEMORY);
- }
-
- UnicodeBuffer = ACPI_CAST_PTR (UINT16, NewObject->Buffer.Pointer);
-
- /* Convert ASCII to Unicode */
-
- for (i = 0; i < OriginalObject->String.Length; i++)
- {
- UnicodeBuffer[i] = (UINT16) AsciiString[i];
- }
-
- *ReturnObject = NewObject;
- return (AE_OK);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: AcpiNsConvertToResource
- *
- * PARAMETERS: Scope - Namespace node for the method/object
- * OriginalObject - Object to be converted
- * ReturnObject - Where the new converted object is returned
- *
- * RETURN: Status. AE_OK if conversion was successful
- *
- * DESCRIPTION: Attempt to convert a Integer object to a ResourceTemplate
- * Buffer.
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiNsConvertToResource (
- ACPI_NAMESPACE_NODE *Scope,
- ACPI_OPERAND_OBJECT *OriginalObject,
- ACPI_OPERAND_OBJECT **ReturnObject)
-{
- ACPI_OPERAND_OBJECT *NewObject;
- UINT8 *Buffer;
-
-
- /*
- * We can fix the following cases for an expected resource template:
- * 1. No return value (interpreter slack mode is disabled)
- * 2. A "Return (Zero)" statement
- * 3. A "Return empty buffer" statement
- *
- * We will return a buffer containing a single EndTag
- * resource descriptor.
- */
- if (OriginalObject)
- {
- switch (OriginalObject->Common.Type)
- {
- case ACPI_TYPE_INTEGER:
-
- /* We can only repair an Integer==0 */
-
- if (OriginalObject->Integer.Value)
- {
- return (AE_AML_OPERAND_TYPE);
- }
- break;
-
- case ACPI_TYPE_BUFFER:
-
- if (OriginalObject->Buffer.Length)
- {
- /* Additional checks can be added in the future */
-
- *ReturnObject = NULL;
- return (AE_OK);
- }
- break;
-
- case ACPI_TYPE_STRING:
- default:
-
- return (AE_AML_OPERAND_TYPE);
- }
- }
-
- /* Create the new buffer object for the resource descriptor */
-
- NewObject = AcpiUtCreateBufferObject (2);
- if (!NewObject)
- {
- return (AE_NO_MEMORY);
- }
-
- Buffer = ACPI_CAST_PTR (UINT8, NewObject->Buffer.Pointer);
-
- /* Initialize the Buffer with a single EndTag descriptor */
-
- Buffer[0] = (ACPI_RESOURCE_NAME_END_TAG | ASL_RDESC_END_TAG_SIZE);
- Buffer[1] = 0x00;
-
- *ReturnObject = NewObject;
- return (AE_OK);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: AcpiNsConvertToReference
- *
- * PARAMETERS: Scope - Namespace node for the method/object
- * OriginalObject - Object to be converted
- * ReturnObject - Where the new converted object is returned
- *
- * RETURN: Status. AE_OK if conversion was successful
- *
- * DESCRIPTION: Attempt to convert a Integer object to a ObjectReference.
- * Buffer.
- *
- ******************************************************************************/
-
-ACPI_STATUS
-AcpiNsConvertToReference (
- ACPI_NAMESPACE_NODE *Scope,
- ACPI_OPERAND_OBJECT *OriginalObject,
- ACPI_OPERAND_OBJECT **ReturnObject)
-{
- ACPI_OPERAND_OBJECT *NewObject = NULL;
- ACPI_STATUS Status;
- ACPI_NAMESPACE_NODE *Node;
- ACPI_GENERIC_STATE ScopeInfo;
- char *Name;
-
-
- ACPI_FUNCTION_NAME (NsConvertToReference);
-
-
- /* Convert path into internal presentation */
-
- Status = AcpiNsInternalizeName (OriginalObject->String.Pointer, &Name);
- if (ACPI_FAILURE (Status))
- {
- return_ACPI_STATUS (Status);
- }
-
- /* Find the namespace node */
-
- ScopeInfo.Scope.Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Scope);
- Status = AcpiNsLookup (&ScopeInfo, Name,
- ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
- ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, NULL, &Node);
- if (ACPI_FAILURE (Status))
- {
- /* Check if we are resolving a named reference within a package */
-
- ACPI_ERROR_NAMESPACE (OriginalObject->String.Pointer, Status);
- goto ErrorExit;
- }
-
- /* Create and init a new internal ACPI object */
-
- NewObject = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE);
- if (!NewObject)
- {
- Status = AE_NO_MEMORY;
- goto ErrorExit;
- }
- NewObject->Reference.Node = Node;
- NewObject->Reference.Object = Node->Object;
- NewObject->Reference.Class = ACPI_REFCLASS_NAME;
-
- /*
- * Increase reference of the object if needed (the object is likely a
- * null for device nodes).
- */
- AcpiUtAddReference (Node->Object);
-
-ErrorExit:
- ACPI_FREE (Name);
- *ReturnObject = NewObject;
- return (AE_OK);
-}
projects / reactos.git / blobdiff