/******************************************************************************
*
* Module Name: exmisc - ACPI AML (p-code) execution - specific opcodes
* $Revision: 115 $
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2003, Intel Corp.
* All rights reserved.
*
* 2. License
*
* 2.1. This is your license from Intel Corp. under its intellectual property
* rights. You may have additional license terms from the party that provided
* you this software, covering your right to use that party's intellectual
* property rights.
*
* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
* copy of the source code appearing in this file ("Covered Code") an
* irrevocable, perpetual, worldwide license under Intel's copyrights in the
* base code distributed originally by Intel ("Original Intel Code") to copy,
* make derivatives, distribute, use and display any portion of the Covered
* Code in any form, with the right to sublicense such rights; and
*
* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
* license (with the right to sublicense), under only those claims of Intel
* patents that are infringed by the Original Intel Code, to make, use, sell,
* offer to sell, and import the Covered Code and derivative works thereof
* solely to the minimum extent necessary to exercise the above copyright
* license, and in no event shall the patent license extend to any additions
* to or modifications of the Original Intel Code. No other license or right
* is granted directly or by implication, estoppel or otherwise;
*
* The above copyright and patent license is granted only if the following
* conditions are met:
*
* 3. Conditions
*
* 3.1. Redistribution of Source with Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification with rights to further distribute source must include
* the above Copyright Notice, the above License, this list of Conditions,
* and the following Disclaimer and Export Compliance provision. In addition,
* Licensee must cause all Covered Code to which Licensee contributes to
* contain a file documenting the changes Licensee made to create that Covered
* Code and the date of any change. Licensee must include in that file the
* documentation of any changes made by any predecessor Licensee. Licensee
* must include a prominent statement that the modification is derived,
* directly or indirectly, from Original Intel Code.
*
* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification without rights to further distribute source must
* include the following Disclaimer and Export Compliance provision in the
* documentation and/or other materials provided with distribution. In
* addition, Licensee may not authorize further sublicense of source of any
* portion of the Covered Code, and must include terms to the effect that the
* license from Licensee to its licensee is limited to the intellectual
* property embodied in the software Licensee provides to its licensee, and
* not to intellectual property embodied in modifications its licensee may
* make.
*
* 3.3. Redistribution of Executable. Redistribution in executable form of any
* substantial portion of the Covered Code or modification must reproduce the
* above Copyright Notice, and the following Disclaimer and Export Compliance
* provision in the documentation and/or other materials provided with the
* distribution.
*
* 3.4. Intel retains all right, title, and interest in and to the Original
* Intel Code.
*
* 3.5. Neither the name Intel nor any other trademark owned or controlled by
* Intel shall be used in advertising or otherwise to promote the sale, use or
* other dealings in products derived from or relating to the Covered Code
* without prior written authorization from Intel.
*
* 4. Disclaimer and Export Compliance
*
* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
* PARTICULAR PURPOSE.
*
* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
* LIMITED REMEDY.
*
* 4.3. Licensee shall not export, either directly or indirectly, any of this
* software or system incorporating such software without first obtaining any
* required license or other approval from the U. S. Department of Commerce or
* any other agency or department of the United States Government. In the
* event Licensee exports any such software from the United States or
* re-exports any such software from a foreign destination, Licensee shall
* ensure that the distribution and export/re-export of the software is in
* compliance with all laws, regulations, orders, or other restrictions of the
* U.S. Export Administration Regulations. Licensee agrees that neither it nor
* any of its subsidiaries will export/re-export any technical data, process,
* software, or service, directly or indirectly, to any country for which the
* United States government or any agency thereof requires an export license,
* other governmental approval, or letter of assurance, without first obtaining
* such license, approval or letter.
*
*****************************************************************************/
#define __EXMISC_C__
#include "acpi.h"
#include "acinterp.h"
#include "amlcode.h"
#define _COMPONENT ACPI_EXECUTER
ACPI_MODULE_NAME ("exmisc")
/*******************************************************************************
*
* FUNCTION: AcpiExGetObjectReference
*
* PARAMETERS: ObjDesc - Create a reference to this object
* ReturnDesc - Where to store the reference
* WalkState - Current state
*
* RETURN: Status
*
* DESCRIPTION: Obtain and return a "reference" to the target object
* Common code for the RefOfOp and the CondRefOfOp.
*
******************************************************************************/
ACPI_STATUS
AcpiExGetObjectReference (
ACPI_OPERAND_OBJECT *ObjDesc,
ACPI_OPERAND_OBJECT **ReturnDesc,
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT *ReferenceObj;
ACPI_OPERAND_OBJECT *ReferencedObj;
ACPI_FUNCTION_TRACE_PTR ("ExGetObjectReference", ObjDesc);
*ReturnDesc = NULL;
switch (ACPI_GET_DESCRIPTOR_TYPE (ObjDesc))
{
case ACPI_DESC_TYPE_OPERAND:
if (ACPI_GET_OBJECT_TYPE (ObjDesc) != ACPI_TYPE_LOCAL_REFERENCE)
{
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
/*
* Must be a reference to a Local or Arg
*/
switch (ObjDesc->Reference.Opcode)
{
case AML_LOCAL_OP:
case AML_ARG_OP:
/* The referenced object is the pseudo-node for the local/arg */
ReferencedObj = ObjDesc->Reference.Object;
break;
default:
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown Reference subtype %X\n",
ObjDesc->Reference.Opcode));
return_ACPI_STATUS (AE_AML_INTERNAL);
}
break;
case ACPI_DESC_TYPE_NAMED:
/*
* A named reference that has already been resolved to a Node
*/
ReferencedObj = ObjDesc;
break;
default:
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid descriptor type %X in %p\n",
ACPI_GET_DESCRIPTOR_TYPE (ObjDesc), ObjDesc));
return_ACPI_STATUS (AE_TYPE);
}
/* Create a new reference object */
ReferenceObj = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE);
if (!ReferenceObj)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
ReferenceObj->Reference.Opcode = AML_REF_OF_OP;
ReferenceObj->Reference.Object = ReferencedObj;
*ReturnDesc = ReferenceObj;
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Object %p Type [%s], returning Reference %p\n",
ObjDesc, AcpiUtGetObjectTypeName (ObjDesc), *ReturnDesc));
return_ACPI_STATUS (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiExConcatTemplate
*
* PARAMETERS: *ObjDesc - Object to be converted. Must be an
* Integer, Buffer, or String
* WalkState - Current walk state
*
* RETURN: Status
*
* DESCRIPTION: Concatenate two resource templates
*
******************************************************************************/
ACPI_STATUS
AcpiExConcatTemplate (
ACPI_OPERAND_OBJECT *ObjDesc1,
ACPI_OPERAND_OBJECT *ObjDesc2,
ACPI_OPERAND_OBJECT **ActualReturnDesc,
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT *ReturnDesc;
UINT8 *NewBuf;
UINT8 *EndTag1;
UINT8 *EndTag2;
ACPI_SIZE Length1;
ACPI_SIZE Length2;
ACPI_FUNCTION_TRACE ("ExConcatTemplate");
/* Find the EndTags in each resource template */
EndTag1 = AcpiUtGetResourceEndTag (ObjDesc1);
EndTag2 = AcpiUtGetResourceEndTag (ObjDesc2);
if (!EndTag1 || !EndTag2)
{
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
/* Compute the length of each part */
Length1 = ACPI_PTR_DIFF (EndTag1, ObjDesc1->Buffer.Pointer);
Length2 = ACPI_PTR_DIFF (EndTag2, ObjDesc2->Buffer.Pointer) +
2; /* Size of END_TAG */
/* Create a new buffer object for the result */
ReturnDesc = AcpiUtCreateBufferObject (Length1 + Length2);
if (!ReturnDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Copy the templates to the new descriptor */
NewBuf = ReturnDesc->Buffer.Pointer;
ACPI_MEMCPY (NewBuf, ObjDesc1->Buffer.Pointer, Length1);
ACPI_MEMCPY (NewBuf + Length1, ObjDesc2->Buffer.Pointer, Length2);
/* Compute the new checksum */
NewBuf[ReturnDesc->Buffer.Length - 1] =
AcpiUtGenerateChecksum (ReturnDesc->Buffer.Pointer,
(ReturnDesc->Buffer.Length - 1));
/* Return the completed template descriptor */
*ActualReturnDesc = ReturnDesc;
return_ACPI_STATUS (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiExDoConcatenate
*
* PARAMETERS: ObjDesc1 - First source object
* ObjDesc2 - Second source object
* ActualReturnDesc - Where to place the return object
* WalkState - Current walk state
*
* RETURN: Status
*
* DESCRIPTION: Concatenate two objects OF THE SAME TYPE.
*
******************************************************************************/
ACPI_STATUS
AcpiExDoConcatenate (
ACPI_OPERAND_OBJECT *ObjDesc1,
ACPI_OPERAND_OBJECT *ObjDesc2,
ACPI_OPERAND_OBJECT **ActualReturnDesc,
ACPI_WALK_STATE *WalkState)
{
ACPI_STATUS Status;
UINT32 i;
ACPI_INTEGER ThisInteger;
ACPI_OPERAND_OBJECT *ReturnDesc;
char *NewBuf;
ACPI_FUNCTION_ENTRY ();
/*
* There are three cases to handle:
*
* 1) Two Integers concatenated to produce a new Buffer
* 2) Two Strings concatenated to produce a new String
* 3) Two Buffers concatenated to produce a new Buffer
*/
switch (ACPI_GET_OBJECT_TYPE (ObjDesc1))
{
case ACPI_TYPE_INTEGER:
/* Result of two Integers is a Buffer */
/* Need enough buffer space for two integers */
ReturnDesc = AcpiUtCreateBufferObject (AcpiGbl_IntegerByteWidth * 2);
if (!ReturnDesc)
{
return (AE_NO_MEMORY);
}
NewBuf = (char *) ReturnDesc->Buffer.Pointer;
/* Convert the first integer */
ThisInteger = ObjDesc1->Integer.Value;
for (i = 0; i < AcpiGbl_IntegerByteWidth; i++)
{
NewBuf[i] = (char) ThisInteger;
ThisInteger >>= 8;
}
/* Convert the second integer */
ThisInteger = ObjDesc2->Integer.Value;
for (; i < (ACPI_MUL_2 (AcpiGbl_IntegerByteWidth)); i++)
{
NewBuf[i] = (char) ThisInteger;
ThisInteger >>= 8;
}
break;
case ACPI_TYPE_STRING:
/* Result of two Strings is a String */
ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_STRING);
if (!ReturnDesc)
{
return (AE_NO_MEMORY);
}
/* Operand0 is string */
NewBuf = ACPI_MEM_CALLOCATE ((ACPI_SIZE) ObjDesc1->String.Length +
(ACPI_SIZE) ObjDesc2->String.Length + 1);
if (!NewBuf)
{
ACPI_REPORT_ERROR
(("ExDoConcatenate: String allocation failure\n"));
Status = AE_NO_MEMORY;
goto Cleanup;
}
/* Concatenate the strings */
ACPI_STRCPY (NewBuf, ObjDesc1->String.Pointer);
ACPI_STRCPY (NewBuf + ObjDesc1->String.Length,
ObjDesc2->String.Pointer);
/* Complete the String object initialization */
ReturnDesc->String.Pointer = NewBuf;
ReturnDesc->String.Length = ObjDesc1->String.Length +
ObjDesc2->String.Length;
break;
case ACPI_TYPE_BUFFER:
/* Result of two Buffers is a Buffer */
ReturnDesc = AcpiUtCreateBufferObject (
(ACPI_SIZE) ObjDesc1->Buffer.Length +
(ACPI_SIZE) ObjDesc2->Buffer.Length);
if (!ReturnDesc)
{
return (AE_NO_MEMORY);
}
NewBuf = (char *) ReturnDesc->Buffer.Pointer;
/* Concatenate the buffers */
ACPI_MEMCPY (NewBuf, ObjDesc1->Buffer.Pointer,
ObjDesc1->Buffer.Length);
ACPI_MEMCPY (NewBuf + ObjDesc1->Buffer.Length, ObjDesc2->Buffer.Pointer,
ObjDesc2->Buffer.Length);
break;
default:
/* Invalid object type, should not happen here */
Status = AE_AML_INTERNAL;
ReturnDesc = NULL;
}
*ActualReturnDesc = ReturnDesc;
return (AE_OK);
Cleanup:
AcpiUtRemoveReference (ReturnDesc);
return (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiExDoMathOp
*
* PARAMETERS: Opcode - AML opcode
* Operand0 - Integer operand #0
* Operand1 - Integer operand #1
*
* RETURN: Integer result of the operation
*
* DESCRIPTION: Execute a math AML opcode. The purpose of having all of the
* math functions here is to prevent a lot of pointer dereferencing
* to obtain the operands.
*
******************************************************************************/
ACPI_INTEGER
AcpiExDoMathOp (
UINT16 Opcode,
ACPI_INTEGER Operand0,
ACPI_INTEGER Operand1)
{
switch (Opcode)
{
case AML_ADD_OP: /* Add (Operand0, Operand1, Result) */
return (Operand0 + Operand1);
case AML_BIT_AND_OP: /* And (Operand0, Operand1, Result) */
return (Operand0 & Operand1);
case AML_BIT_NAND_OP: /* NAnd (Operand0, Operand1, Result) */
return (~(Operand0 & Operand1));
case AML_BIT_OR_OP: /* Or (Operand0, Operand1, Result) */
return (Operand0 | Operand1);
case AML_BIT_NOR_OP: /* NOr (Operand0, Operand1, Result) */
return (~(Operand0 | Operand1));
case AML_BIT_XOR_OP: /* XOr (Operand0, Operand1, Result) */
return (Operand0 ^ Operand1);
case AML_MULTIPLY_OP: /* Multiply (Operand0, Operand1, Result) */
return (Operand0 * Operand1);
case AML_SHIFT_LEFT_OP: /* ShiftLeft (Operand, ShiftCount, Result) */
return (Operand0 << Operand1);
case AML_SHIFT_RIGHT_OP: /* ShiftRight (Operand, ShiftCount, Result) */
return (Operand0 >> Operand1);
case AML_SUBTRACT_OP: /* Subtract (Operand0, Operand1, Result) */
return (Operand0 - Operand1);
default:
return (0);
}
}
/*******************************************************************************
*
* FUNCTION: AcpiExDoLogicalOp
*
* PARAMETERS: Opcode - AML opcode
* Operand0 - Integer operand #0
* Operand1 - Integer operand #1
*
* RETURN: TRUE/FALSE result of the operation
*
* DESCRIPTION: Execute a logical AML opcode. The purpose of having all of the
* functions here is to prevent a lot of pointer dereferencing
* to obtain the operands and to simplify the generation of the
* logical value.
*
* Note: cleanest machine code seems to be produced by the code
* below, rather than using statements of the form:
* Result = (Operand0 == Operand1);
*
******************************************************************************/
BOOLEAN
AcpiExDoLogicalOp (
UINT16 Opcode,
ACPI_INTEGER Operand0,
ACPI_INTEGER Operand1)
{
switch (Opcode)
{
case AML_LAND_OP: /* LAnd (Operand0, Operand1) */
if (Operand0 && Operand1)
{
return (TRUE);
}
break;
case AML_LEQUAL_OP: /* LEqual (Operand0, Operand1) */
if (Operand0 == Operand1)
{
return (TRUE);
}
break;
case AML_LGREATER_OP: /* LGreater (Operand0, Operand1) */
if (Operand0 > Operand1)
{
return (TRUE);
}
break;
case AML_LLESS_OP: /* LLess (Operand0, Operand1) */
if (Operand0 < Operand1)
{
return (TRUE);
}
break;
case AML_LOR_OP: /* LOr (Operand0, Operand1) */
if (Operand0 || Operand1)
{
return (TRUE);
}
break;
default:
break;
}
return (FALSE);
}
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