/******************************************************************************
*
* Module Name: exoparg3 - AML execution - opcodes with 3 arguments
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2018, 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 "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);
goto Cleanup;
case AML_EXTERNAL_OP:
/*
* If the interpreter sees this opcode, just ignore it. The External
* op is intended for use by disassemblers in order to properly
* disassemble control method invocations. The opcode or group of
* opcodes should be surrounded by an "if (0)" clause to ensure that
* AML interpreters never see the opcode. Thus, something is
* wrong if an external opcode ever gets here.
*/
ACPI_ERROR ((AE_INFO, "Executed External Op"));
Status = AE_OK;
goto Cleanup;
default:
ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%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;
UINT64 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 (
(Operand[0])->Common.Type);
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 ((Operand[0])->Common.Type)
{
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 */
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 0x%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;
}
else
{
/* Set the return object and exit */
WalkState->ResultObj = ReturnDesc;
}
return_ACPI_STATUS (Status);
}