mirror of
https://github.com/reactos/reactos.git
synced 2024-11-10 16:48:16 +00:00
873 lines
27 KiB
C
873 lines
27 KiB
C
|
|
/******************************************************************************
|
|
*
|
|
* Module Name: exmisc - ACPI AML (p-code) execution - specific opcodes
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 1. Copyright Notice
|
|
*
|
|
* Some or all of this work - Copyright (c) 1999 - 2009, 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 "accommon.h"
|
|
#include "acinterp.h"
|
|
#include "amlcode.h"
|
|
#include "amlresrc.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 (ObjDesc->Common.Type != ACPI_TYPE_LOCAL_REFERENCE)
|
|
{
|
|
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
|
|
}
|
|
|
|
/*
|
|
* Must be a reference to a Local or Arg
|
|
*/
|
|
switch (ObjDesc->Reference.Class)
|
|
{
|
|
case ACPI_REFCLASS_LOCAL:
|
|
case ACPI_REFCLASS_ARG:
|
|
case ACPI_REFCLASS_DEBUG:
|
|
|
|
/* The referenced object is the pseudo-node for the local/arg */
|
|
|
|
ReferencedObj = ObjDesc->Reference.Object;
|
|
break;
|
|
|
|
default:
|
|
|
|
ACPI_ERROR ((AE_INFO, "Unknown Reference Class %2.2X",
|
|
ObjDesc->Reference.Class));
|
|
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_ERROR ((AE_INFO, "Invalid descriptor type %X",
|
|
ACPI_GET_DESCRIPTOR_TYPE (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.Class = ACPI_REFCLASS_REFOF;
|
|
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: Operand0 - First source object
|
|
* Operand1 - Second source object
|
|
* ActualReturnDesc - Where to place the return object
|
|
* WalkState - Current walk state
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Concatenate two resource templates
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiExConcatTemplate (
|
|
ACPI_OPERAND_OBJECT *Operand0,
|
|
ACPI_OPERAND_OBJECT *Operand1,
|
|
ACPI_OPERAND_OBJECT **ActualReturnDesc,
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_OPERAND_OBJECT *ReturnDesc;
|
|
UINT8 *NewBuf;
|
|
UINT8 *EndTag;
|
|
ACPI_SIZE Length0;
|
|
ACPI_SIZE Length1;
|
|
ACPI_SIZE NewLength;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (ExConcatTemplate);
|
|
|
|
|
|
/*
|
|
* Find the EndTag descriptor in each resource template.
|
|
* Note1: returned pointers point TO the EndTag, not past it.
|
|
* Note2: zero-length buffers are allowed; treated like one EndTag
|
|
*/
|
|
|
|
/* Get the length of the first resource template */
|
|
|
|
Status = AcpiUtGetResourceEndTag (Operand0, &EndTag);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
Length0 = ACPI_PTR_DIFF (EndTag, Operand0->Buffer.Pointer);
|
|
|
|
/* Get the length of the second resource template */
|
|
|
|
Status = AcpiUtGetResourceEndTag (Operand1, &EndTag);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
Length1 = ACPI_PTR_DIFF (EndTag, Operand1->Buffer.Pointer);
|
|
|
|
/* Combine both lengths, minimum size will be 2 for EndTag */
|
|
|
|
NewLength = Length0 + Length1 + sizeof (AML_RESOURCE_END_TAG);
|
|
|
|
/* Create a new buffer object for the result (with one EndTag) */
|
|
|
|
ReturnDesc = AcpiUtCreateBufferObject (NewLength);
|
|
if (!ReturnDesc)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
/*
|
|
* Copy the templates to the new buffer, 0 first, then 1 follows. One
|
|
* EndTag descriptor is copied from Operand1.
|
|
*/
|
|
NewBuf = ReturnDesc->Buffer.Pointer;
|
|
ACPI_MEMCPY (NewBuf, Operand0->Buffer.Pointer, Length0);
|
|
ACPI_MEMCPY (NewBuf + Length0, Operand1->Buffer.Pointer, Length1);
|
|
|
|
/* Insert EndTag and set the checksum to zero, means "ignore checksum" */
|
|
|
|
NewBuf[NewLength - 1] = 0;
|
|
NewBuf[NewLength - 2] = ACPI_RESOURCE_NAME_END_TAG | 1;
|
|
|
|
/* Return the completed resource template */
|
|
|
|
*ActualReturnDesc = ReturnDesc;
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiExDoConcatenate
|
|
*
|
|
* PARAMETERS: Operand0 - First source object
|
|
* Operand1 - 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 *Operand0,
|
|
ACPI_OPERAND_OBJECT *Operand1,
|
|
ACPI_OPERAND_OBJECT **ActualReturnDesc,
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
ACPI_OPERAND_OBJECT *LocalOperand1 = Operand1;
|
|
ACPI_OPERAND_OBJECT *ReturnDesc;
|
|
char *NewBuf;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (ExDoConcatenate);
|
|
|
|
|
|
/*
|
|
* Convert the second operand if necessary. The first operand
|
|
* determines the type of the second operand, (See the Data Types
|
|
* section of the ACPI specification.) Both object types are
|
|
* guaranteed to be either Integer/String/Buffer by the operand
|
|
* resolution mechanism.
|
|
*/
|
|
switch (Operand0->Common.Type)
|
|
{
|
|
case ACPI_TYPE_INTEGER:
|
|
Status = AcpiExConvertToInteger (Operand1, &LocalOperand1, 16);
|
|
break;
|
|
|
|
case ACPI_TYPE_STRING:
|
|
Status = AcpiExConvertToString (Operand1, &LocalOperand1,
|
|
ACPI_IMPLICIT_CONVERT_HEX);
|
|
break;
|
|
|
|
case ACPI_TYPE_BUFFER:
|
|
Status = AcpiExConvertToBuffer (Operand1, &LocalOperand1);
|
|
break;
|
|
|
|
default:
|
|
ACPI_ERROR ((AE_INFO, "Invalid object type: %X",
|
|
Operand0->Common.Type));
|
|
Status = AE_AML_INTERNAL;
|
|
}
|
|
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto Cleanup;
|
|
}
|
|
|
|
/*
|
|
* Both operands are now known to be the same object type
|
|
* (Both are Integer, String, or Buffer), and we can now perform the
|
|
* concatenation.
|
|
*/
|
|
|
|
/*
|
|
* 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 (Operand0->Common.Type)
|
|
{
|
|
case ACPI_TYPE_INTEGER:
|
|
|
|
/* Result of two Integers is a Buffer */
|
|
/* Need enough buffer space for two integers */
|
|
|
|
ReturnDesc = AcpiUtCreateBufferObject ((ACPI_SIZE)
|
|
ACPI_MUL_2 (AcpiGbl_IntegerByteWidth));
|
|
if (!ReturnDesc)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
goto Cleanup;
|
|
}
|
|
|
|
NewBuf = (char *) ReturnDesc->Buffer.Pointer;
|
|
|
|
/* Copy the first integer, LSB first */
|
|
|
|
ACPI_MEMCPY (NewBuf, &Operand0->Integer.Value,
|
|
AcpiGbl_IntegerByteWidth);
|
|
|
|
/* Copy the second integer (LSB first) after the first */
|
|
|
|
ACPI_MEMCPY (NewBuf + AcpiGbl_IntegerByteWidth,
|
|
&LocalOperand1->Integer.Value,
|
|
AcpiGbl_IntegerByteWidth);
|
|
break;
|
|
|
|
case ACPI_TYPE_STRING:
|
|
|
|
/* Result of two Strings is a String */
|
|
|
|
ReturnDesc = AcpiUtCreateStringObject (
|
|
((ACPI_SIZE) Operand0->String.Length +
|
|
LocalOperand1->String.Length));
|
|
if (!ReturnDesc)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
goto Cleanup;
|
|
}
|
|
|
|
NewBuf = ReturnDesc->String.Pointer;
|
|
|
|
/* Concatenate the strings */
|
|
|
|
ACPI_STRCPY (NewBuf, Operand0->String.Pointer);
|
|
ACPI_STRCPY (NewBuf + Operand0->String.Length,
|
|
LocalOperand1->String.Pointer);
|
|
break;
|
|
|
|
case ACPI_TYPE_BUFFER:
|
|
|
|
/* Result of two Buffers is a Buffer */
|
|
|
|
ReturnDesc = AcpiUtCreateBufferObject (
|
|
((ACPI_SIZE) Operand0->Buffer.Length +
|
|
LocalOperand1->Buffer.Length));
|
|
if (!ReturnDesc)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
goto Cleanup;
|
|
}
|
|
|
|
NewBuf = (char *) ReturnDesc->Buffer.Pointer;
|
|
|
|
/* Concatenate the buffers */
|
|
|
|
ACPI_MEMCPY (NewBuf, Operand0->Buffer.Pointer,
|
|
Operand0->Buffer.Length);
|
|
ACPI_MEMCPY (NewBuf + Operand0->Buffer.Length,
|
|
LocalOperand1->Buffer.Pointer,
|
|
LocalOperand1->Buffer.Length);
|
|
break;
|
|
|
|
default:
|
|
|
|
/* Invalid object type, should not happen here */
|
|
|
|
ACPI_ERROR ((AE_INFO, "Invalid object type: %X",
|
|
Operand0->Common.Type));
|
|
Status =AE_AML_INTERNAL;
|
|
goto Cleanup;
|
|
}
|
|
|
|
*ActualReturnDesc = ReturnDesc;
|
|
|
|
Cleanup:
|
|
if (LocalOperand1 != Operand1)
|
|
{
|
|
AcpiUtRemoveReference (LocalOperand1);
|
|
}
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiExDoMathOp
|
|
*
|
|
* PARAMETERS: Opcode - AML opcode
|
|
* Integer0 - Integer operand #0
|
|
* Integer1 - 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 Integer0,
|
|
ACPI_INTEGER Integer1)
|
|
{
|
|
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
switch (Opcode)
|
|
{
|
|
case AML_ADD_OP: /* Add (Integer0, Integer1, Result) */
|
|
|
|
return (Integer0 + Integer1);
|
|
|
|
|
|
case AML_BIT_AND_OP: /* And (Integer0, Integer1, Result) */
|
|
|
|
return (Integer0 & Integer1);
|
|
|
|
|
|
case AML_BIT_NAND_OP: /* NAnd (Integer0, Integer1, Result) */
|
|
|
|
return (~(Integer0 & Integer1));
|
|
|
|
|
|
case AML_BIT_OR_OP: /* Or (Integer0, Integer1, Result) */
|
|
|
|
return (Integer0 | Integer1);
|
|
|
|
|
|
case AML_BIT_NOR_OP: /* NOr (Integer0, Integer1, Result) */
|
|
|
|
return (~(Integer0 | Integer1));
|
|
|
|
|
|
case AML_BIT_XOR_OP: /* XOr (Integer0, Integer1, Result) */
|
|
|
|
return (Integer0 ^ Integer1);
|
|
|
|
|
|
case AML_MULTIPLY_OP: /* Multiply (Integer0, Integer1, Result) */
|
|
|
|
return (Integer0 * Integer1);
|
|
|
|
|
|
case AML_SHIFT_LEFT_OP: /* ShiftLeft (Operand, ShiftCount, Result)*/
|
|
|
|
/*
|
|
* We need to check if the shiftcount is larger than the integer bit
|
|
* width since the behavior of this is not well-defined in the C language.
|
|
*/
|
|
if (Integer1 >= AcpiGbl_IntegerBitWidth)
|
|
{
|
|
return (0);
|
|
}
|
|
return (Integer0 << Integer1);
|
|
|
|
|
|
case AML_SHIFT_RIGHT_OP: /* ShiftRight (Operand, ShiftCount, Result) */
|
|
|
|
/*
|
|
* We need to check if the shiftcount is larger than the integer bit
|
|
* width since the behavior of this is not well-defined in the C language.
|
|
*/
|
|
if (Integer1 >= AcpiGbl_IntegerBitWidth)
|
|
{
|
|
return (0);
|
|
}
|
|
return (Integer0 >> Integer1);
|
|
|
|
|
|
case AML_SUBTRACT_OP: /* Subtract (Integer0, Integer1, Result) */
|
|
|
|
return (Integer0 - Integer1);
|
|
|
|
default:
|
|
|
|
return (0);
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiExDoLogicalNumericOp
|
|
*
|
|
* PARAMETERS: Opcode - AML opcode
|
|
* Integer0 - Integer operand #0
|
|
* Integer1 - Integer operand #1
|
|
* LogicalResult - TRUE/FALSE result of the operation
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Execute a logical "Numeric" AML opcode. For these Numeric
|
|
* operators (LAnd and LOr), both operands must be integers.
|
|
*
|
|
* Note: cleanest machine code seems to be produced by the code
|
|
* below, rather than using statements of the form:
|
|
* Result = (Integer0 && Integer1);
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiExDoLogicalNumericOp (
|
|
UINT16 Opcode,
|
|
ACPI_INTEGER Integer0,
|
|
ACPI_INTEGER Integer1,
|
|
BOOLEAN *LogicalResult)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
BOOLEAN LocalResult = FALSE;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (ExDoLogicalNumericOp);
|
|
|
|
|
|
switch (Opcode)
|
|
{
|
|
case AML_LAND_OP: /* LAnd (Integer0, Integer1) */
|
|
|
|
if (Integer0 && Integer1)
|
|
{
|
|
LocalResult = TRUE;
|
|
}
|
|
break;
|
|
|
|
case AML_LOR_OP: /* LOr (Integer0, Integer1) */
|
|
|
|
if (Integer0 || Integer1)
|
|
{
|
|
LocalResult = TRUE;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
Status = AE_AML_INTERNAL;
|
|
break;
|
|
}
|
|
|
|
/* Return the logical result and status */
|
|
|
|
*LogicalResult = LocalResult;
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiExDoLogicalOp
|
|
*
|
|
* PARAMETERS: Opcode - AML opcode
|
|
* Operand0 - operand #0
|
|
* Operand1 - operand #1
|
|
* LogicalResult - TRUE/FALSE result of the operation
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* 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. For the Numeric operators (LAnd and LOr), both
|
|
* operands must be integers. For the other logical operators,
|
|
* operands can be any combination of Integer/String/Buffer. The
|
|
* first operand determines the type to which the second operand
|
|
* will be converted.
|
|
*
|
|
* Note: cleanest machine code seems to be produced by the code
|
|
* below, rather than using statements of the form:
|
|
* Result = (Operand0 == Operand1);
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiExDoLogicalOp (
|
|
UINT16 Opcode,
|
|
ACPI_OPERAND_OBJECT *Operand0,
|
|
ACPI_OPERAND_OBJECT *Operand1,
|
|
BOOLEAN *LogicalResult)
|
|
{
|
|
ACPI_OPERAND_OBJECT *LocalOperand1 = Operand1;
|
|
ACPI_INTEGER Integer0;
|
|
ACPI_INTEGER Integer1;
|
|
UINT32 Length0;
|
|
UINT32 Length1;
|
|
ACPI_STATUS Status = AE_OK;
|
|
BOOLEAN LocalResult = FALSE;
|
|
int Compare;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (ExDoLogicalOp);
|
|
|
|
|
|
/*
|
|
* Convert the second operand if necessary. The first operand
|
|
* determines the type of the second operand, (See the Data Types
|
|
* section of the ACPI 3.0+ specification.) Both object types are
|
|
* guaranteed to be either Integer/String/Buffer by the operand
|
|
* resolution mechanism.
|
|
*/
|
|
switch (Operand0->Common.Type)
|
|
{
|
|
case ACPI_TYPE_INTEGER:
|
|
Status = AcpiExConvertToInteger (Operand1, &LocalOperand1, 16);
|
|
break;
|
|
|
|
case ACPI_TYPE_STRING:
|
|
Status = AcpiExConvertToString (Operand1, &LocalOperand1,
|
|
ACPI_IMPLICIT_CONVERT_HEX);
|
|
break;
|
|
|
|
case ACPI_TYPE_BUFFER:
|
|
Status = AcpiExConvertToBuffer (Operand1, &LocalOperand1);
|
|
break;
|
|
|
|
default:
|
|
Status = AE_AML_INTERNAL;
|
|
break;
|
|
}
|
|
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto Cleanup;
|
|
}
|
|
|
|
/*
|
|
* Two cases: 1) Both Integers, 2) Both Strings or Buffers
|
|
*/
|
|
if (Operand0->Common.Type == ACPI_TYPE_INTEGER)
|
|
{
|
|
/*
|
|
* 1) Both operands are of type integer
|
|
* Note: LocalOperand1 may have changed above
|
|
*/
|
|
Integer0 = Operand0->Integer.Value;
|
|
Integer1 = LocalOperand1->Integer.Value;
|
|
|
|
switch (Opcode)
|
|
{
|
|
case AML_LEQUAL_OP: /* LEqual (Operand0, Operand1) */
|
|
|
|
if (Integer0 == Integer1)
|
|
{
|
|
LocalResult = TRUE;
|
|
}
|
|
break;
|
|
|
|
case AML_LGREATER_OP: /* LGreater (Operand0, Operand1) */
|
|
|
|
if (Integer0 > Integer1)
|
|
{
|
|
LocalResult = TRUE;
|
|
}
|
|
break;
|
|
|
|
case AML_LLESS_OP: /* LLess (Operand0, Operand1) */
|
|
|
|
if (Integer0 < Integer1)
|
|
{
|
|
LocalResult = TRUE;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
Status = AE_AML_INTERNAL;
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* 2) Both operands are Strings or both are Buffers
|
|
* Note: Code below takes advantage of common Buffer/String
|
|
* object fields. LocalOperand1 may have changed above. Use
|
|
* memcmp to handle nulls in buffers.
|
|
*/
|
|
Length0 = Operand0->Buffer.Length;
|
|
Length1 = LocalOperand1->Buffer.Length;
|
|
|
|
/* Lexicographic compare: compare the data bytes */
|
|
|
|
Compare = ACPI_MEMCMP (Operand0->Buffer.Pointer,
|
|
LocalOperand1->Buffer.Pointer,
|
|
(Length0 > Length1) ? Length1 : Length0);
|
|
|
|
switch (Opcode)
|
|
{
|
|
case AML_LEQUAL_OP: /* LEqual (Operand0, Operand1) */
|
|
|
|
/* Length and all bytes must be equal */
|
|
|
|
if ((Length0 == Length1) &&
|
|
(Compare == 0))
|
|
{
|
|
/* Length and all bytes match ==> TRUE */
|
|
|
|
LocalResult = TRUE;
|
|
}
|
|
break;
|
|
|
|
case AML_LGREATER_OP: /* LGreater (Operand0, Operand1) */
|
|
|
|
if (Compare > 0)
|
|
{
|
|
LocalResult = TRUE;
|
|
goto Cleanup; /* TRUE */
|
|
}
|
|
if (Compare < 0)
|
|
{
|
|
goto Cleanup; /* FALSE */
|
|
}
|
|
|
|
/* Bytes match (to shortest length), compare lengths */
|
|
|
|
if (Length0 > Length1)
|
|
{
|
|
LocalResult = TRUE;
|
|
}
|
|
break;
|
|
|
|
case AML_LLESS_OP: /* LLess (Operand0, Operand1) */
|
|
|
|
if (Compare > 0)
|
|
{
|
|
goto Cleanup; /* FALSE */
|
|
}
|
|
if (Compare < 0)
|
|
{
|
|
LocalResult = TRUE;
|
|
goto Cleanup; /* TRUE */
|
|
}
|
|
|
|
/* Bytes match (to shortest length), compare lengths */
|
|
|
|
if (Length0 < Length1)
|
|
{
|
|
LocalResult = TRUE;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
Status = AE_AML_INTERNAL;
|
|
break;
|
|
}
|
|
}
|
|
|
|
Cleanup:
|
|
|
|
/* New object was created if implicit conversion performed - delete */
|
|
|
|
if (LocalOperand1 != Operand1)
|
|
{
|
|
AcpiUtRemoveReference (LocalOperand1);
|
|
}
|
|
|
|
/* Return the logical result and status */
|
|
|
|
*LogicalResult = LocalResult;
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|