NetBSD-5.0.2/sys/dist/acpica/exoparg3.c
/******************************************************************************
*
* Module Name: exoparg3 - AML execution - opcodes with 3 arguments
* $Revision: 1.4 $
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2008, 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 __EXOPARG3_C__
#include "acpi.h"
#include "acinterp.h"
#include "acparser.h"
#include "amlcode.h"
#define _COMPONENT ACPI_EXECUTER
ACPI_MODULE_NAME ("exoparg3")
/*!
* Naming convention for AML interpreter execution routines.
*
* The routines that begin execution of AML opcodes are named with a common
* convention based upon the number of arguments, the number of target operands,
* and whether or not a value is returned:
*
* AcpiExOpcode_xA_yT_zR
*
* Where:
*
* xA - ARGUMENTS: The number of arguments (input operands) that are
* required for this opcode type (1 through 6 args).
* yT - TARGETS: The number of targets (output operands) that are required
* for this opcode type (0, 1, or 2 targets).
* zR - RETURN VALUE: Indicates whether this opcode type returns a value
* as the function return (0 or 1).
*
* The AcpiExOpcode* functions are called via the Dispatcher component with
* fully resolved operands.
!*/
/*******************************************************************************
*
* FUNCTION: AcpiExOpcode_3A_0T_0R
*
* PARAMETERS: WalkState - Current walk state
*
* RETURN: Status
*
* DESCRIPTION: Execute Triadic operator (3 operands)
*
******************************************************************************/
ACPI_STATUS
AcpiExOpcode_3A_0T_0R (
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
ACPI_SIGNAL_FATAL_INFO *Fatal;
ACPI_STATUS Status = AE_OK;
ACPI_FUNCTION_TRACE_STR (ExOpcode_3A_0T_0R,
AcpiPsGetOpcodeName (WalkState->Opcode));
switch (WalkState->Opcode)
{
case AML_FATAL_OP: /* Fatal (FatalType FatalCode FatalArg) */
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
"FatalOp: Type %X Code %X Arg %X <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\n",
(UINT32) Operand[0]->Integer.Value,
(UINT32) Operand[1]->Integer.Value,
(UINT32) Operand[2]->Integer.Value));
Fatal = ACPI_ALLOCATE (sizeof (ACPI_SIGNAL_FATAL_INFO));
if (Fatal)
{
Fatal->Type = (UINT32) Operand[0]->Integer.Value;
Fatal->Code = (UINT32) Operand[1]->Integer.Value;
Fatal->Argument = (UINT32) Operand[2]->Integer.Value;
}
/* Always signal the OS! */
Status = AcpiOsSignal (ACPI_SIGNAL_FATAL, Fatal);
/* Might return while OS is shutting down, just continue */
ACPI_FREE (Fatal);
break;
default:
ACPI_ERROR ((AE_INFO, "Unknown AML opcode %X",
WalkState->Opcode));
Status = AE_AML_BAD_OPCODE;
goto Cleanup;
}
Cleanup:
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiExOpcode_3A_1T_1R
*
* PARAMETERS: WalkState - Current walk state
*
* RETURN: Status
*
* DESCRIPTION: Execute Triadic operator (3 operands)
*
******************************************************************************/
ACPI_STATUS
AcpiExOpcode_3A_1T_1R (
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
ACPI_OPERAND_OBJECT *ReturnDesc = NULL;
char *Buffer = NULL;
ACPI_STATUS Status = AE_OK;
ACPI_INTEGER Index;
ACPI_SIZE Length;
ACPI_FUNCTION_TRACE_STR (ExOpcode_3A_1T_1R,
AcpiPsGetOpcodeName (WalkState->Opcode));
switch (WalkState->Opcode)
{
case AML_MID_OP: /* Mid (Source[0], Index[1], Length[2], Result[3]) */
/*
* Create the return object. The Source operand is guaranteed to be
* either a String or a Buffer, so just use its type.
*/
ReturnDesc = AcpiUtCreateInternalObject (
ACPI_GET_OBJECT_TYPE (Operand[0]));
if (!ReturnDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
/* Get the Integer values from the objects */
Index = Operand[1]->Integer.Value;
Length = (ACPI_SIZE) Operand[2]->Integer.Value;
/*
* If the index is beyond the length of the String/Buffer, or if the
* requested length is zero, return a zero-length String/Buffer
*/
if (Index >= Operand[0]->String.Length)
{
Length = 0;
}
/* Truncate request if larger than the actual String/Buffer */
else if ((Index + Length) > Operand[0]->String.Length)
{
Length = (ACPI_SIZE) Operand[0]->String.Length -
(ACPI_SIZE) Index;
}
/* Strings always have a sub-pointer, not so for buffers */
switch (ACPI_GET_OBJECT_TYPE (Operand[0]))
{
case ACPI_TYPE_STRING:
/* Always allocate a new buffer for the String */
Buffer = ACPI_ALLOCATE_ZEROED ((ACPI_SIZE) Length + 1);
if (!Buffer)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
break;
case ACPI_TYPE_BUFFER:
/* If the requested length is zero, don't allocate a buffer */
if (Length > 0)
{
/* Allocate a new buffer for the Buffer */
Buffer = ACPI_ALLOCATE_ZEROED (Length);
if (!Buffer)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
}
break;
default: /* Should not happen */
Status = AE_AML_OPERAND_TYPE;
goto Cleanup;
}
if (Buffer)
{
/* We have a buffer, copy the portion requested */
ACPI_MEMCPY (Buffer, Operand[0]->String.Pointer + Index,
Length);
}
/* Set the length of the new String/Buffer */
ReturnDesc->String.Pointer = Buffer;
ReturnDesc->String.Length = (UINT32) Length;
/* Mark buffer initialized */
ReturnDesc->Buffer.Flags |= AOPOBJ_DATA_VALID;
break;
default:
ACPI_ERROR ((AE_INFO, "Unknown AML opcode %X",
WalkState->Opcode));
Status = AE_AML_BAD_OPCODE;
goto Cleanup;
}
/* Store the result in the target */
Status = AcpiExStore (ReturnDesc, Operand[3], WalkState);
Cleanup:
/* Delete return object on error */
if (ACPI_FAILURE (Status) || WalkState->ResultObj)
{
AcpiUtRemoveReference (ReturnDesc);
WalkState->ResultObj = NULL;
}
/* Set the return object and exit */
else
{
WalkState->ResultObj = ReturnDesc;
}
return_ACPI_STATUS (Status);
}