acpica/executer/exoparg1.c

db2bae30SDana Myers/******************************************************************************
db2bae30SDana Myers *
db2bae30SDana Myers * Module Name: exoparg1 - AML execution - opcodes with 1 argument
db2bae30SDana Myers *
db2bae30SDana Myers *****************************************************************************/
db2bae30SDana Myers
26f3cdf0SGordon Ross/*
*385cc6b4SJerry Jelinek * Copyright (C) 2000 - 2016, Intel Corp.
db2bae30SDana Myers * All rights reserved.
db2bae30SDana Myers *
26f3cdf0SGordon Ross * Redistribution and use in source and binary forms, with or without
26f3cdf0SGordon Ross * modification, are permitted provided that the following conditions
26f3cdf0SGordon Ross * are met:
26f3cdf0SGordon Ross * 1. Redistributions of source code must retain the above copyright
26f3cdf0SGordon Ross *    notice, this list of conditions, and the following disclaimer,
26f3cdf0SGordon Ross *    without modification.
26f3cdf0SGordon Ross * 2. Redistributions in binary form must reproduce at minimum a disclaimer
26f3cdf0SGordon Ross *    substantially similar to the "NO WARRANTY" disclaimer below
26f3cdf0SGordon Ross *    ("Disclaimer") and any redistribution must be conditioned upon
26f3cdf0SGordon Ross *    including a substantially similar Disclaimer requirement for further
26f3cdf0SGordon Ross *    binary redistribution.
26f3cdf0SGordon Ross * 3. Neither the names of the above-listed copyright holders nor the names
26f3cdf0SGordon Ross *    of any contributors may be used to endorse or promote products derived
26f3cdf0SGordon Ross *    from this software without specific prior written permission.
db2bae30SDana Myers *
26f3cdf0SGordon Ross * Alternatively, this software may be distributed under the terms of the
26f3cdf0SGordon Ross * GNU General Public License ("GPL") version 2 as published by the Free
26f3cdf0SGordon Ross * Software Foundation.
db2bae30SDana Myers *
26f3cdf0SGordon Ross * NO WARRANTY
26f3cdf0SGordon Ross * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26f3cdf0SGordon Ross * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26f3cdf0SGordon Ross * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
26f3cdf0SGordon Ross * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
26f3cdf0SGordon Ross * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26f3cdf0SGordon Ross * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26f3cdf0SGordon Ross * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26f3cdf0SGordon Ross * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
26f3cdf0SGordon Ross * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
26f3cdf0SGordon Ross * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26f3cdf0SGordon Ross * POSSIBILITY OF SUCH DAMAGES.
26f3cdf0SGordon Ross */
db2bae30SDana Myers
db2bae30SDana Myers#include "acpi.h"
aa2aa9a6SDana Myers#include "accommon.h"
db2bae30SDana Myers#include "acparser.h"
db2bae30SDana Myers#include "acdispat.h"
db2bae30SDana Myers#include "acinterp.h"
db2bae30SDana Myers#include "amlcode.h"
db2bae30SDana Myers#include "acnamesp.h"
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers#define _COMPONENT          ACPI_EXECUTER
db2bae30SDana Myers        ACPI_MODULE_NAME    ("exoparg1")
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers/*!
db2bae30SDana Myers * Naming convention for AML interpreter execution routines.
db2bae30SDana Myers *
db2bae30SDana Myers * The routines that begin execution of AML opcodes are named with a common
db2bae30SDana Myers * convention based upon the number of arguments, the number of target operands,
db2bae30SDana Myers * and whether or not a value is returned:
db2bae30SDana Myers *
db2bae30SDana Myers *      AcpiExOpcode_xA_yT_zR
db2bae30SDana Myers *
db2bae30SDana Myers * Where:
db2bae30SDana Myers *
db2bae30SDana Myers * xA - ARGUMENTS:    The number of arguments (input operands) that are
db2bae30SDana Myers *                    required for this opcode type (0 through 6 args).
db2bae30SDana Myers * yT - TARGETS:      The number of targets (output operands) that are required
db2bae30SDana Myers *                    for this opcode type (0, 1, or 2 targets).
db2bae30SDana Myers * zR - RETURN VALUE: Indicates whether this opcode type returns a value
db2bae30SDana Myers *                    as the function return (0 or 1).
db2bae30SDana Myers *
db2bae30SDana Myers * The AcpiExOpcode* functions are called via the Dispatcher component with
db2bae30SDana Myers * fully resolved operands.
db2bae30SDana Myers!*/
db2bae30SDana Myers
db2bae30SDana Myers/*******************************************************************************
db2bae30SDana Myers *
db2bae30SDana Myers * FUNCTION:    AcpiExOpcode_0A_0T_1R
db2bae30SDana Myers *
db2bae30SDana Myers * PARAMETERS:  WalkState           - Current state (contains AML opcode)
db2bae30SDana Myers *
db2bae30SDana Myers * RETURN:      Status
db2bae30SDana Myers *
db2bae30SDana Myers * DESCRIPTION: Execute operator with no operands, one return value
db2bae30SDana Myers *
db2bae30SDana Myers ******************************************************************************/
db2bae30SDana Myers
db2bae30SDana MyersACPI_STATUS
db2bae30SDana MyersAcpiExOpcode_0A_0T_1R (
db2bae30SDana Myers    ACPI_WALK_STATE         *WalkState)
db2bae30SDana Myers{
db2bae30SDana Myers    ACPI_STATUS             Status = AE_OK;
db2bae30SDana Myers    ACPI_OPERAND_OBJECT     *ReturnDesc = NULL;
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers    ACPI_FUNCTION_TRACE_STR (ExOpcode_0A_0T_1R,
db2bae30SDana Myers        AcpiPsGetOpcodeName (WalkState->Opcode));
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers    /* Examine the AML opcode */
db2bae30SDana Myers
db2bae30SDana Myers    switch (WalkState->Opcode)
db2bae30SDana Myers    {
db2bae30SDana Myers    case AML_TIMER_OP:      /*  Timer () */
db2bae30SDana Myers
db2bae30SDana Myers        /* Create a return object of type Integer */
db2bae30SDana Myers
57190917SDana Myers        ReturnDesc = AcpiUtCreateIntegerObject (AcpiOsGetTimer ());
db2bae30SDana Myers        if (!ReturnDesc)
db2bae30SDana Myers        {
db2bae30SDana Myers            Status = AE_NO_MEMORY;
db2bae30SDana Myers            goto Cleanup;
db2bae30SDana Myers        }
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    default:                /*  Unknown opcode  */
db2bae30SDana Myers
26f3cdf0SGordon Ross        ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
db2bae30SDana Myers            WalkState->Opcode));
db2bae30SDana Myers        Status = AE_AML_BAD_OPCODE;
db2bae30SDana Myers        break;
db2bae30SDana Myers    }
db2bae30SDana Myers
db2bae30SDana MyersCleanup:
db2bae30SDana Myers
db2bae30SDana Myers    /* Delete return object on error */
db2bae30SDana Myers
db2bae30SDana Myers    if ((ACPI_FAILURE (Status)) || WalkState->ResultObj)
db2bae30SDana Myers    {
db2bae30SDana Myers        AcpiUtRemoveReference (ReturnDesc);
db2bae30SDana Myers        WalkState->ResultObj = NULL;
db2bae30SDana Myers    }
db2bae30SDana Myers    else
db2bae30SDana Myers    {
db2bae30SDana Myers        /* Save the return value */
db2bae30SDana Myers
db2bae30SDana Myers        WalkState->ResultObj = ReturnDesc;
db2bae30SDana Myers    }
db2bae30SDana Myers
db2bae30SDana Myers    return_ACPI_STATUS (Status);
db2bae30SDana Myers}
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers/*******************************************************************************
db2bae30SDana Myers *
db2bae30SDana Myers * FUNCTION:    AcpiExOpcode_1A_0T_0R
db2bae30SDana Myers *
db2bae30SDana Myers * PARAMETERS:  WalkState           - Current state (contains AML opcode)
db2bae30SDana Myers *
db2bae30SDana Myers * RETURN:      Status
db2bae30SDana Myers *
db2bae30SDana Myers * DESCRIPTION: Execute Type 1 monadic operator with numeric operand on
db2bae30SDana Myers *              object stack
db2bae30SDana Myers *
db2bae30SDana Myers ******************************************************************************/
db2bae30SDana Myers
db2bae30SDana MyersACPI_STATUS
db2bae30SDana MyersAcpiExOpcode_1A_0T_0R (
db2bae30SDana Myers    ACPI_WALK_STATE         *WalkState)
db2bae30SDana Myers{
db2bae30SDana Myers    ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
db2bae30SDana Myers    ACPI_STATUS             Status = AE_OK;
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers    ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_0T_0R,
db2bae30SDana Myers        AcpiPsGetOpcodeName (WalkState->Opcode));
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers    /* Examine the AML opcode */
db2bae30SDana Myers
db2bae30SDana Myers    switch (WalkState->Opcode)
db2bae30SDana Myers    {
db2bae30SDana Myers    case AML_RELEASE_OP:    /*  Release (MutexObject) */
db2bae30SDana Myers
db2bae30SDana Myers        Status = AcpiExReleaseMutex (Operand[0], WalkState);
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    case AML_RESET_OP:      /*  Reset (EventObject) */
db2bae30SDana Myers
db2bae30SDana Myers        Status = AcpiExSystemResetEvent (Operand[0]);
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    case AML_SIGNAL_OP:     /*  Signal (EventObject) */
db2bae30SDana Myers
db2bae30SDana Myers        Status = AcpiExSystemSignalEvent (Operand[0]);
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    case AML_SLEEP_OP:      /*  Sleep (MsecTime) */
db2bae30SDana Myers
26f3cdf0SGordon Ross        Status = AcpiExSystemDoSleep (Operand[0]->Integer.Value);
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    case AML_STALL_OP:      /*  Stall (UsecTime) */
db2bae30SDana Myers
db2bae30SDana Myers        Status = AcpiExSystemDoStall ((UINT32) Operand[0]->Integer.Value);
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    case AML_UNLOAD_OP:     /*  Unload (Handle) */
db2bae30SDana Myers
db2bae30SDana Myers        Status = AcpiExUnloadTable (Operand[0]);
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    default:                /*  Unknown opcode  */
db2bae30SDana Myers
26f3cdf0SGordon Ross        ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
db2bae30SDana Myers            WalkState->Opcode));
db2bae30SDana Myers        Status = AE_AML_BAD_OPCODE;
db2bae30SDana Myers        break;
db2bae30SDana Myers    }
db2bae30SDana Myers
db2bae30SDana Myers    return_ACPI_STATUS (Status);
db2bae30SDana Myers}
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers/*******************************************************************************
db2bae30SDana Myers *
db2bae30SDana Myers * FUNCTION:    AcpiExOpcode_1A_1T_0R
db2bae30SDana Myers *
db2bae30SDana Myers * PARAMETERS:  WalkState           - Current state (contains AML opcode)
db2bae30SDana Myers *
db2bae30SDana Myers * RETURN:      Status
db2bae30SDana Myers *
db2bae30SDana Myers * DESCRIPTION: Execute opcode with one argument, one target, and no
db2bae30SDana Myers *              return value.
db2bae30SDana Myers *
db2bae30SDana Myers ******************************************************************************/
db2bae30SDana Myers
db2bae30SDana MyersACPI_STATUS
db2bae30SDana MyersAcpiExOpcode_1A_1T_0R (
db2bae30SDana Myers    ACPI_WALK_STATE         *WalkState)
db2bae30SDana Myers{
db2bae30SDana Myers    ACPI_STATUS             Status = AE_OK;
db2bae30SDana Myers    ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers    ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_1T_0R,
db2bae30SDana Myers        AcpiPsGetOpcodeName (WalkState->Opcode));
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers    /* Examine the AML opcode */
db2bae30SDana Myers
db2bae30SDana Myers    switch (WalkState->Opcode)
db2bae30SDana Myers    {
db2bae30SDana Myers    case AML_LOAD_OP:
db2bae30SDana Myers
db2bae30SDana Myers        Status = AcpiExLoadOp (Operand[0], Operand[1], WalkState);
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    default:                        /* Unknown opcode */
db2bae30SDana Myers
26f3cdf0SGordon Ross        ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
db2bae30SDana Myers            WalkState->Opcode));
db2bae30SDana Myers        Status = AE_AML_BAD_OPCODE;
db2bae30SDana Myers        goto Cleanup;
db2bae30SDana Myers    }
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana MyersCleanup:
db2bae30SDana Myers
db2bae30SDana Myers    return_ACPI_STATUS (Status);
db2bae30SDana Myers}
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers/*******************************************************************************
db2bae30SDana Myers *
db2bae30SDana Myers * FUNCTION:    AcpiExOpcode_1A_1T_1R
db2bae30SDana Myers *
db2bae30SDana Myers * PARAMETERS:  WalkState           - Current state (contains AML opcode)
db2bae30SDana Myers *
db2bae30SDana Myers * RETURN:      Status
db2bae30SDana Myers *
db2bae30SDana Myers * DESCRIPTION: Execute opcode with one argument, one target, and a
db2bae30SDana Myers *              return value.
db2bae30SDana Myers *
db2bae30SDana Myers ******************************************************************************/
db2bae30SDana Myers
db2bae30SDana MyersACPI_STATUS
db2bae30SDana MyersAcpiExOpcode_1A_1T_1R (
db2bae30SDana Myers    ACPI_WALK_STATE         *WalkState)
db2bae30SDana Myers{
db2bae30SDana Myers    ACPI_STATUS             Status = AE_OK;
db2bae30SDana Myers    ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
db2bae30SDana Myers    ACPI_OPERAND_OBJECT     *ReturnDesc = NULL;
db2bae30SDana Myers    ACPI_OPERAND_OBJECT     *ReturnDesc2 = NULL;
db2bae30SDana Myers    UINT32                  Temp32;
db2bae30SDana Myers    UINT32                  i;
26f3cdf0SGordon Ross    UINT64                  PowerOfTen;
26f3cdf0SGordon Ross    UINT64                  Digit;
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers    ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_1T_1R,
db2bae30SDana Myers        AcpiPsGetOpcodeName (WalkState->Opcode));
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers    /* Examine the AML opcode */
db2bae30SDana Myers
db2bae30SDana Myers    switch (WalkState->Opcode)
db2bae30SDana Myers    {
db2bae30SDana Myers    case AML_BIT_NOT_OP:
db2bae30SDana Myers    case AML_FIND_SET_LEFT_BIT_OP:
db2bae30SDana Myers    case AML_FIND_SET_RIGHT_BIT_OP:
db2bae30SDana Myers    case AML_FROM_BCD_OP:
db2bae30SDana Myers    case AML_TO_BCD_OP:
db2bae30SDana Myers    case AML_COND_REF_OF_OP:
db2bae30SDana Myers
db2bae30SDana Myers        /* Create a return object of type Integer for these opcodes */
db2bae30SDana Myers
db2bae30SDana Myers        ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
db2bae30SDana Myers        if (!ReturnDesc)
db2bae30SDana Myers        {
db2bae30SDana Myers            Status = AE_NO_MEMORY;
db2bae30SDana Myers            goto Cleanup;
db2bae30SDana Myers        }
db2bae30SDana Myers
db2bae30SDana Myers        switch (WalkState->Opcode)
db2bae30SDana Myers        {
db2bae30SDana Myers        case AML_BIT_NOT_OP:            /* Not (Operand, Result)  */
db2bae30SDana Myers
db2bae30SDana Myers            ReturnDesc->Integer.Value = ~Operand[0]->Integer.Value;
db2bae30SDana Myers            break;
db2bae30SDana Myers
db2bae30SDana Myers        case AML_FIND_SET_LEFT_BIT_OP:  /* FindSetLeftBit (Operand, Result) */
db2bae30SDana Myers
db2bae30SDana Myers            ReturnDesc->Integer.Value = Operand[0]->Integer.Value;
db2bae30SDana Myers
db2bae30SDana Myers            /*
db2bae30SDana Myers             * Acpi specification describes Integer type as a little
db2bae30SDana Myers             * endian unsigned value, so this boundary condition is valid.
db2bae30SDana Myers             */
db2bae30SDana Myers            for (Temp32 = 0; ReturnDesc->Integer.Value &&
db2bae30SDana Myers                    Temp32 < ACPI_INTEGER_BIT_SIZE; ++Temp32)
db2bae30SDana Myers            {
db2bae30SDana Myers                ReturnDesc->Integer.Value >>= 1;
db2bae30SDana Myers            }
db2bae30SDana Myers
db2bae30SDana Myers            ReturnDesc->Integer.Value = Temp32;
db2bae30SDana Myers            break;
db2bae30SDana Myers
db2bae30SDana Myers        case AML_FIND_SET_RIGHT_BIT_OP: /* FindSetRightBit (Operand, Result) */
db2bae30SDana Myers
db2bae30SDana Myers            ReturnDesc->Integer.Value = Operand[0]->Integer.Value;
db2bae30SDana Myers
db2bae30SDana Myers            /*
db2bae30SDana Myers             * The Acpi specification describes Integer type as a little
db2bae30SDana Myers             * endian unsigned value, so this boundary condition is valid.
db2bae30SDana Myers             */
db2bae30SDana Myers            for (Temp32 = 0; ReturnDesc->Integer.Value &&
db2bae30SDana Myers                     Temp32 < ACPI_INTEGER_BIT_SIZE; ++Temp32)
db2bae30SDana Myers            {
db2bae30SDana Myers                ReturnDesc->Integer.Value <<= 1;
db2bae30SDana Myers            }
db2bae30SDana Myers
db2bae30SDana Myers            /* Since the bit position is one-based, subtract from 33 (65) */
db2bae30SDana Myers
db2bae30SDana Myers            ReturnDesc->Integer.Value =
db2bae30SDana Myers                Temp32 == 0 ? 0 : (ACPI_INTEGER_BIT_SIZE + 1) - Temp32;
db2bae30SDana Myers            break;
db2bae30SDana Myers
db2bae30SDana Myers        case AML_FROM_BCD_OP:           /* FromBcd (BCDValue, Result)  */
db2bae30SDana Myers            /*
db2bae30SDana Myers             * The 64-bit ACPI integer can hold 16 4-bit BCD characters
db2bae30SDana Myers             * (if table is 32-bit, integer can hold 8 BCD characters)
db2bae30SDana Myers             * Convert each 4-bit BCD value
db2bae30SDana Myers             */
db2bae30SDana Myers            PowerOfTen = 1;
db2bae30SDana Myers            ReturnDesc->Integer.Value = 0;
db2bae30SDana Myers            Digit = Operand[0]->Integer.Value;
db2bae30SDana Myers
db2bae30SDana Myers            /* Convert each BCD digit (each is one nybble wide) */
db2bae30SDana Myers
db2bae30SDana Myers            for (i = 0; (i < AcpiGbl_IntegerNybbleWidth) && (Digit > 0); i++)
db2bae30SDana Myers            {
db2bae30SDana Myers                /* Get the least significant 4-bit BCD digit */
db2bae30SDana Myers
db2bae30SDana Myers                Temp32 = ((UINT32) Digit) & 0xF;
db2bae30SDana Myers
db2bae30SDana Myers                /* Check the range of the digit */
db2bae30SDana Myers
db2bae30SDana Myers                if (Temp32 > 9)
db2bae30SDana Myers                {
db2bae30SDana Myers                    ACPI_ERROR ((AE_INFO,
db2bae30SDana Myers                        "BCD digit too large (not decimal): 0x%X",
db2bae30SDana Myers                        Temp32));
db2bae30SDana Myers
db2bae30SDana Myers                    Status = AE_AML_NUMERIC_OVERFLOW;
db2bae30SDana Myers                    goto Cleanup;
db2bae30SDana Myers                }
db2bae30SDana Myers
db2bae30SDana Myers                /* Sum the digit into the result with the current power of 10 */
db2bae30SDana Myers
db2bae30SDana Myers                ReturnDesc->Integer.Value +=
26f3cdf0SGordon Ross                    (((UINT64) Temp32) * PowerOfTen);
db2bae30SDana Myers
db2bae30SDana Myers                /* Shift to next BCD digit */
db2bae30SDana Myers
db2bae30SDana Myers                Digit >>= 4;
db2bae30SDana Myers
db2bae30SDana Myers                /* Next power of 10 */
db2bae30SDana Myers
db2bae30SDana Myers                PowerOfTen *= 10;
db2bae30SDana Myers            }
db2bae30SDana Myers            break;
db2bae30SDana Myers
db2bae30SDana Myers        case AML_TO_BCD_OP:             /* ToBcd (Operand, Result)  */
db2bae30SDana Myers
db2bae30SDana Myers            ReturnDesc->Integer.Value = 0;
db2bae30SDana Myers            Digit = Operand[0]->Integer.Value;
db2bae30SDana Myers
db2bae30SDana Myers            /* Each BCD digit is one nybble wide */
db2bae30SDana Myers
db2bae30SDana Myers            for (i = 0; (i < AcpiGbl_IntegerNybbleWidth) && (Digit > 0); i++)
db2bae30SDana Myers            {
db2bae30SDana Myers                (void) AcpiUtShortDivide (Digit, 10, &Digit, &Temp32);
db2bae30SDana Myers
db2bae30SDana Myers                /*
db2bae30SDana Myers                 * Insert the BCD digit that resides in the
db2bae30SDana Myers                 * remainder from above
db2bae30SDana Myers                 */
db2bae30SDana Myers                ReturnDesc->Integer.Value |=
26f3cdf0SGordon Ross                    (((UINT64) Temp32) << ACPI_MUL_4 (i));
db2bae30SDana Myers            }
db2bae30SDana Myers
db2bae30SDana Myers            /* Overflow if there is any data left in Digit */
db2bae30SDana Myers
db2bae30SDana Myers            if (Digit > 0)
db2bae30SDana Myers            {
db2bae30SDana Myers                ACPI_ERROR ((AE_INFO,
26f3cdf0SGordon Ross                    "Integer too large to convert to BCD: 0x%8.8X%8.8X",
db2bae30SDana Myers                    ACPI_FORMAT_UINT64 (Operand[0]->Integer.Value)));
db2bae30SDana Myers                Status = AE_AML_NUMERIC_OVERFLOW;
db2bae30SDana Myers                goto Cleanup;
db2bae30SDana Myers            }
db2bae30SDana Myers            break;
db2bae30SDana Myers
db2bae30SDana Myers        case AML_COND_REF_OF_OP:        /* CondRefOf (SourceObject, Result)  */
db2bae30SDana Myers            /*
db2bae30SDana Myers             * This op is a little strange because the internal return value is
db2bae30SDana Myers             * different than the return value stored in the result descriptor
db2bae30SDana Myers             * (There are really two return values)
db2bae30SDana Myers             */
db2bae30SDana Myers            if ((ACPI_NAMESPACE_NODE *) Operand[0] == AcpiGbl_RootNode)
db2bae30SDana Myers            {
db2bae30SDana Myers                /*
db2bae30SDana Myers                 * This means that the object does not exist in the namespace,
db2bae30SDana Myers                 * return FALSE
db2bae30SDana Myers                 */
db2bae30SDana Myers                ReturnDesc->Integer.Value = 0;
db2bae30SDana Myers                goto Cleanup;
db2bae30SDana Myers            }
db2bae30SDana Myers
db2bae30SDana Myers            /* Get the object reference, store it, and remove our reference */
db2bae30SDana Myers
db2bae30SDana Myers            Status = AcpiExGetObjectReference (Operand[0],
db2bae30SDana Myers                &ReturnDesc2, WalkState);
db2bae30SDana Myers            if (ACPI_FAILURE (Status))
db2bae30SDana Myers            {
db2bae30SDana Myers                goto Cleanup;
db2bae30SDana Myers            }
db2bae30SDana Myers
db2bae30SDana Myers            Status = AcpiExStore (ReturnDesc2, Operand[1], WalkState);
db2bae30SDana Myers            AcpiUtRemoveReference (ReturnDesc2);
db2bae30SDana Myers
db2bae30SDana Myers            /* The object exists in the namespace, return TRUE */
db2bae30SDana Myers
26f3cdf0SGordon Ross            ReturnDesc->Integer.Value = ACPI_UINT64_MAX;
db2bae30SDana Myers            goto Cleanup;
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers        default:
*385cc6b4SJerry Jelinek
db2bae30SDana Myers            /* No other opcodes get here */
*385cc6b4SJerry Jelinek
db2bae30SDana Myers            break;
db2bae30SDana Myers        }
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    case AML_STORE_OP:              /* Store (Source, Target) */
db2bae30SDana Myers        /*
db2bae30SDana Myers         * A store operand is typically a number, string, buffer or lvalue
db2bae30SDana Myers         * Be careful about deleting the source object,
db2bae30SDana Myers         * since the object itself may have been stored.
db2bae30SDana Myers         */
db2bae30SDana Myers        Status = AcpiExStore (Operand[0], Operand[1], WalkState);
db2bae30SDana Myers        if (ACPI_FAILURE (Status))
db2bae30SDana Myers        {
db2bae30SDana Myers            return_ACPI_STATUS (Status);
db2bae30SDana Myers        }
db2bae30SDana Myers
db2bae30SDana Myers        /* It is possible that the Store already produced a return object */
db2bae30SDana Myers
db2bae30SDana Myers        if (!WalkState->ResultObj)
db2bae30SDana Myers        {
db2bae30SDana Myers            /*
db2bae30SDana Myers             * Normally, we would remove a reference on the Operand[0]
db2bae30SDana Myers             * parameter; But since it is being used as the internal return
db2bae30SDana Myers             * object (meaning we would normally increment it), the two
db2bae30SDana Myers             * cancel out, and we simply don't do anything.
db2bae30SDana Myers             */
db2bae30SDana Myers            WalkState->ResultObj = Operand[0];
db2bae30SDana Myers            WalkState->Operands[0] = NULL;  /* Prevent deletion */
db2bae30SDana Myers        }
db2bae30SDana Myers        return_ACPI_STATUS (Status);
db2bae30SDana Myers
db2bae30SDana Myers    /*
db2bae30SDana Myers     * ACPI 2.0 Opcodes
db2bae30SDana Myers     */
db2bae30SDana Myers    case AML_COPY_OP:               /* Copy (Source, Target) */
db2bae30SDana Myers
*385cc6b4SJerry Jelinek        Status = AcpiUtCopyIobjectToIobject (
*385cc6b4SJerry Jelinek            Operand[0], &ReturnDesc, WalkState);
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    case AML_TO_DECSTRING_OP:       /* ToDecimalString (Data, Result) */
db2bae30SDana Myers
*385cc6b4SJerry Jelinek        Status = AcpiExConvertToString (
*385cc6b4SJerry Jelinek            Operand[0], &ReturnDesc, ACPI_EXPLICIT_CONVERT_DECIMAL);
db2bae30SDana Myers        if (ReturnDesc == Operand[0])
db2bae30SDana Myers        {
db2bae30SDana Myers            /* No conversion performed, add ref to handle return value */
*385cc6b4SJerry Jelinek
db2bae30SDana Myers            AcpiUtAddReference (ReturnDesc);
db2bae30SDana Myers        }
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    case AML_TO_HEXSTRING_OP:       /* ToHexString (Data, Result) */
db2bae30SDana Myers
*385cc6b4SJerry Jelinek        Status = AcpiExConvertToString (
*385cc6b4SJerry Jelinek            Operand[0], &ReturnDesc, ACPI_EXPLICIT_CONVERT_HEX);
db2bae30SDana Myers        if (ReturnDesc == Operand[0])
db2bae30SDana Myers        {
db2bae30SDana Myers            /* No conversion performed, add ref to handle return value */
*385cc6b4SJerry Jelinek
db2bae30SDana Myers            AcpiUtAddReference (ReturnDesc);
db2bae30SDana Myers        }
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    case AML_TO_BUFFER_OP:          /* ToBuffer (Data, Result) */
db2bae30SDana Myers
db2bae30SDana Myers        Status = AcpiExConvertToBuffer (Operand[0], &ReturnDesc);
db2bae30SDana Myers        if (ReturnDesc == Operand[0])
db2bae30SDana Myers        {
db2bae30SDana Myers            /* No conversion performed, add ref to handle return value */
*385cc6b4SJerry Jelinek
db2bae30SDana Myers            AcpiUtAddReference (ReturnDesc);
db2bae30SDana Myers        }
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    case AML_TO_INTEGER_OP:         /* ToInteger (Data, Result) */
db2bae30SDana Myers
*385cc6b4SJerry Jelinek        Status = AcpiExConvertToInteger (
*385cc6b4SJerry Jelinek            Operand[0], &ReturnDesc, ACPI_ANY_BASE);
db2bae30SDana Myers        if (ReturnDesc == Operand[0])
db2bae30SDana Myers        {
db2bae30SDana Myers            /* No conversion performed, add ref to handle return value */
*385cc6b4SJerry Jelinek
db2bae30SDana Myers            AcpiUtAddReference (ReturnDesc);
db2bae30SDana Myers        }
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    case AML_SHIFT_LEFT_BIT_OP:     /* ShiftLeftBit (Source, BitNum)  */
db2bae30SDana Myers    case AML_SHIFT_RIGHT_BIT_OP:    /* ShiftRightBit (Source, BitNum) */
db2bae30SDana Myers
db2bae30SDana Myers        /* These are two obsolete opcodes */
db2bae30SDana Myers
db2bae30SDana Myers        ACPI_ERROR ((AE_INFO,
db2bae30SDana Myers            "%s is obsolete and not implemented",
db2bae30SDana Myers            AcpiPsGetOpcodeName (WalkState->Opcode)));
db2bae30SDana Myers        Status = AE_SUPPORT;
db2bae30SDana Myers        goto Cleanup;
db2bae30SDana Myers
db2bae30SDana Myers    default:                        /* Unknown opcode */
db2bae30SDana Myers
26f3cdf0SGordon Ross        ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
db2bae30SDana Myers            WalkState->Opcode));
db2bae30SDana Myers        Status = AE_AML_BAD_OPCODE;
db2bae30SDana Myers        goto Cleanup;
db2bae30SDana Myers    }
db2bae30SDana Myers
db2bae30SDana Myers    if (ACPI_SUCCESS (Status))
db2bae30SDana Myers    {
db2bae30SDana Myers        /* Store the return value computed above into the target object */
db2bae30SDana Myers
db2bae30SDana Myers        Status = AcpiExStore (ReturnDesc, Operand[1], WalkState);
db2bae30SDana Myers    }
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana MyersCleanup:
db2bae30SDana Myers
db2bae30SDana Myers    /* Delete return object on error */
db2bae30SDana Myers
db2bae30SDana Myers    if (ACPI_FAILURE (Status))
db2bae30SDana Myers    {
db2bae30SDana Myers        AcpiUtRemoveReference (ReturnDesc);
db2bae30SDana Myers    }
db2bae30SDana Myers
db2bae30SDana Myers    /* Save return object on success */
db2bae30SDana Myers
db2bae30SDana Myers    else if (!WalkState->ResultObj)
db2bae30SDana Myers    {
db2bae30SDana Myers        WalkState->ResultObj = ReturnDesc;
db2bae30SDana Myers    }
db2bae30SDana Myers
db2bae30SDana Myers    return_ACPI_STATUS (Status);
db2bae30SDana Myers}
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers/*******************************************************************************
db2bae30SDana Myers *
db2bae30SDana Myers * FUNCTION:    AcpiExOpcode_1A_0T_1R
db2bae30SDana Myers *
db2bae30SDana Myers * PARAMETERS:  WalkState           - Current state (contains AML opcode)
db2bae30SDana Myers *
db2bae30SDana Myers * RETURN:      Status
db2bae30SDana Myers *
db2bae30SDana Myers * DESCRIPTION: Execute opcode with one argument, no target, and a return value
db2bae30SDana Myers *
db2bae30SDana Myers ******************************************************************************/
db2bae30SDana Myers
db2bae30SDana MyersACPI_STATUS
db2bae30SDana MyersAcpiExOpcode_1A_0T_1R (
db2bae30SDana Myers    ACPI_WALK_STATE         *WalkState)
db2bae30SDana Myers{
db2bae30SDana Myers    ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
db2bae30SDana Myers    ACPI_OPERAND_OBJECT     *TempDesc;
db2bae30SDana Myers    ACPI_OPERAND_OBJECT     *ReturnDesc = NULL;
db2bae30SDana Myers    ACPI_STATUS             Status = AE_OK;
db2bae30SDana Myers    UINT32                  Type;
26f3cdf0SGordon Ross    UINT64                  Value;
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers    ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_0T_1R,
db2bae30SDana Myers        AcpiPsGetOpcodeName (WalkState->Opcode));
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers    /* Examine the AML opcode */
db2bae30SDana Myers
db2bae30SDana Myers    switch (WalkState->Opcode)
db2bae30SDana Myers    {
db2bae30SDana Myers    case AML_LNOT_OP:               /* LNot (Operand) */
db2bae30SDana Myers
57190917SDana Myers        ReturnDesc = AcpiUtCreateIntegerObject ((UINT64) 0);
db2bae30SDana Myers        if (!ReturnDesc)
db2bae30SDana Myers        {
db2bae30SDana Myers            Status = AE_NO_MEMORY;
db2bae30SDana Myers            goto Cleanup;
db2bae30SDana Myers        }
db2bae30SDana Myers
db2bae30SDana Myers        /*
db2bae30SDana Myers         * Set result to ONES (TRUE) if Value == 0. Note:
db2bae30SDana Myers         * ReturnDesc->Integer.Value is initially == 0 (FALSE) from above.
db2bae30SDana Myers         */
db2bae30SDana Myers        if (!Operand[0]->Integer.Value)
db2bae30SDana Myers        {
26f3cdf0SGordon Ross            ReturnDesc->Integer.Value = ACPI_UINT64_MAX;
db2bae30SDana Myers        }
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    case AML_DECREMENT_OP:          /* Decrement (Operand)  */
db2bae30SDana Myers    case AML_INCREMENT_OP:          /* Increment (Operand)  */
db2bae30SDana Myers        /*
db2bae30SDana Myers         * Create a new integer. Can't just get the base integer and
db2bae30SDana Myers         * increment it because it may be an Arg or Field.
db2bae30SDana Myers         */
db2bae30SDana Myers        ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
db2bae30SDana Myers        if (!ReturnDesc)
db2bae30SDana Myers        {
db2bae30SDana Myers            Status = AE_NO_MEMORY;
db2bae30SDana Myers            goto Cleanup;
db2bae30SDana Myers        }
db2bae30SDana Myers
db2bae30SDana Myers        /*
db2bae30SDana Myers         * Since we are expecting a Reference operand, it can be either a
db2bae30SDana Myers         * NS Node or an internal object.
db2bae30SDana Myers         */
db2bae30SDana Myers        TempDesc = Operand[0];
db2bae30SDana Myers        if (ACPI_GET_DESCRIPTOR_TYPE (TempDesc) == ACPI_DESC_TYPE_OPERAND)
db2bae30SDana Myers        {
db2bae30SDana Myers            /* Internal reference object - prevent deletion */
db2bae30SDana Myers
db2bae30SDana Myers            AcpiUtAddReference (TempDesc);
db2bae30SDana Myers        }
db2bae30SDana Myers
db2bae30SDana Myers        /*
db2bae30SDana Myers         * Convert the Reference operand to an Integer (This removes a
db2bae30SDana Myers         * reference on the Operand[0] object)
db2bae30SDana Myers         *
db2bae30SDana Myers         * NOTE:  We use LNOT_OP here in order to force resolution of the
db2bae30SDana Myers         * reference operand to an actual integer.
db2bae30SDana Myers         */
db2bae30SDana Myers        Status = AcpiExResolveOperands (AML_LNOT_OP, &TempDesc, WalkState);
db2bae30SDana Myers        if (ACPI_FAILURE (Status))
db2bae30SDana Myers        {
db2bae30SDana Myers            ACPI_EXCEPTION ((AE_INFO, Status,
db2bae30SDana Myers                "While resolving operands for [%s]",
db2bae30SDana Myers                AcpiPsGetOpcodeName (WalkState->Opcode)));
db2bae30SDana Myers
db2bae30SDana Myers            goto Cleanup;
db2bae30SDana Myers        }
db2bae30SDana Myers
db2bae30SDana Myers        /*
db2bae30SDana Myers         * TempDesc is now guaranteed to be an Integer object --
db2bae30SDana Myers         * Perform the actual increment or decrement
db2bae30SDana Myers         */
db2bae30SDana Myers        if (WalkState->Opcode == AML_INCREMENT_OP)
db2bae30SDana Myers        {
db2bae30SDana Myers            ReturnDesc->Integer.Value = TempDesc->Integer.Value + 1;
db2bae30SDana Myers        }
db2bae30SDana Myers        else
db2bae30SDana Myers        {
db2bae30SDana Myers            ReturnDesc->Integer.Value = TempDesc->Integer.Value - 1;
db2bae30SDana Myers        }
db2bae30SDana Myers
db2bae30SDana Myers        /* Finished with this Integer object */
db2bae30SDana Myers
db2bae30SDana Myers        AcpiUtRemoveReference (TempDesc);
db2bae30SDana Myers
db2bae30SDana Myers        /*
db2bae30SDana Myers         * Store the result back (indirectly) through the original
db2bae30SDana Myers         * Reference object
db2bae30SDana Myers         */
db2bae30SDana Myers        Status = AcpiExStore (ReturnDesc, Operand[0], WalkState);
db2bae30SDana Myers        break;
db2bae30SDana Myers
*385cc6b4SJerry Jelinek    case AML_OBJECT_TYPE_OP:            /* ObjectType (SourceObject) */
db2bae30SDana Myers        /*
db2bae30SDana Myers         * Note: The operand is not resolved at this point because we want to
db2bae30SDana Myers         * get the associated object, not its value. For example, we don't
db2bae30SDana Myers         * want to resolve a FieldUnit to its value, we want the actual
db2bae30SDana Myers         * FieldUnit object.
db2bae30SDana Myers         */
db2bae30SDana Myers
db2bae30SDana Myers        /* Get the type of the base object */
db2bae30SDana Myers
db2bae30SDana Myers        Status = AcpiExResolveMultiple (WalkState, Operand[0], &Type, NULL);
db2bae30SDana Myers        if (ACPI_FAILURE (Status))
db2bae30SDana Myers        {
db2bae30SDana Myers            goto Cleanup;
db2bae30SDana Myers        }
db2bae30SDana Myers
db2bae30SDana Myers        /* Allocate a descriptor to hold the type. */
db2bae30SDana Myers
57190917SDana Myers        ReturnDesc = AcpiUtCreateIntegerObject ((UINT64) Type);
db2bae30SDana Myers        if (!ReturnDesc)
db2bae30SDana Myers        {
db2bae30SDana Myers            Status = AE_NO_MEMORY;
db2bae30SDana Myers            goto Cleanup;
db2bae30SDana Myers        }
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    case AML_SIZE_OF_OP:            /* SizeOf (SourceObject)  */
db2bae30SDana Myers        /*
db2bae30SDana Myers         * Note: The operand is not resolved at this point because we want to
db2bae30SDana Myers         * get the associated object, not its value.
db2bae30SDana Myers         */
db2bae30SDana Myers
db2bae30SDana Myers        /* Get the base object */
db2bae30SDana Myers
*385cc6b4SJerry Jelinek        Status = AcpiExResolveMultiple (
*385cc6b4SJerry Jelinek            WalkState, Operand[0], &Type, &TempDesc);
db2bae30SDana Myers        if (ACPI_FAILURE (Status))
db2bae30SDana Myers        {
db2bae30SDana Myers            goto Cleanup;
db2bae30SDana Myers        }
db2bae30SDana Myers
db2bae30SDana Myers        /*
db2bae30SDana Myers         * The type of the base object must be integer, buffer, string, or
db2bae30SDana Myers         * package. All others are not supported.
db2bae30SDana Myers         *
db2bae30SDana Myers         * NOTE: Integer is not specifically supported by the ACPI spec,
db2bae30SDana Myers         * but is supported implicitly via implicit operand conversion.
db2bae30SDana Myers         * rather than bother with conversion, we just use the byte width
db2bae30SDana Myers         * global (4 or 8 bytes).
db2bae30SDana Myers         */
db2bae30SDana Myers        switch (Type)
db2bae30SDana Myers        {
db2bae30SDana Myers        case ACPI_TYPE_INTEGER:
*385cc6b4SJerry Jelinek
db2bae30SDana Myers            Value = AcpiGbl_IntegerByteWidth;
db2bae30SDana Myers            break;
db2bae30SDana Myers
db2bae30SDana Myers        case ACPI_TYPE_STRING:
*385cc6b4SJerry Jelinek
db2bae30SDana Myers            Value = TempDesc->String.Length;
db2bae30SDana Myers            break;
db2bae30SDana Myers
db2bae30SDana Myers        case ACPI_TYPE_BUFFER:
db2bae30SDana Myers
db2bae30SDana Myers            /* Buffer arguments may not be evaluated at this point */
db2bae30SDana Myers
db2bae30SDana Myers            Status = AcpiDsGetBufferArguments (TempDesc);
db2bae30SDana Myers            Value = TempDesc->Buffer.Length;
db2bae30SDana Myers            break;
db2bae30SDana Myers
db2bae30SDana Myers        case ACPI_TYPE_PACKAGE:
db2bae30SDana Myers
db2bae30SDana Myers            /* Package arguments may not be evaluated at this point */
db2bae30SDana Myers
db2bae30SDana Myers            Status = AcpiDsGetPackageArguments (TempDesc);
db2bae30SDana Myers            Value = TempDesc->Package.Count;
db2bae30SDana Myers            break;
db2bae30SDana Myers
db2bae30SDana Myers        default:
*385cc6b4SJerry Jelinek
db2bae30SDana Myers            ACPI_ERROR ((AE_INFO,
*385cc6b4SJerry Jelinek                "Operand must be Buffer/Integer/String/Package"
*385cc6b4SJerry Jelinek                " - found type %s",
db2bae30SDana Myers                AcpiUtGetTypeName (Type)));
*385cc6b4SJerry Jelinek
db2bae30SDana Myers            Status = AE_AML_OPERAND_TYPE;
db2bae30SDana Myers            goto Cleanup;
db2bae30SDana Myers        }
db2bae30SDana Myers
db2bae30SDana Myers        if (ACPI_FAILURE (Status))
db2bae30SDana Myers        {
db2bae30SDana Myers            goto Cleanup;
db2bae30SDana Myers        }
db2bae30SDana Myers
db2bae30SDana Myers        /*
db2bae30SDana Myers         * Now that we have the size of the object, create a result
db2bae30SDana Myers         * object to hold the value
db2bae30SDana Myers         */
57190917SDana Myers        ReturnDesc = AcpiUtCreateIntegerObject (Value);
db2bae30SDana Myers        if (!ReturnDesc)
db2bae30SDana Myers        {
db2bae30SDana Myers            Status = AE_NO_MEMORY;
db2bae30SDana Myers            goto Cleanup;
db2bae30SDana Myers        }
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers    case AML_REF_OF_OP:             /* RefOf (SourceObject) */
db2bae30SDana Myers
*385cc6b4SJerry Jelinek        Status = AcpiExGetObjectReference (
*385cc6b4SJerry Jelinek            Operand[0], &ReturnDesc, WalkState);
db2bae30SDana Myers        if (ACPI_FAILURE (Status))
db2bae30SDana Myers        {
db2bae30SDana Myers            goto Cleanup;
db2bae30SDana Myers        }
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers    case AML_DEREF_OF_OP:           /* DerefOf (ObjReference | String) */
db2bae30SDana Myers
db2bae30SDana Myers        /* Check for a method local or argument, or standalone String */
db2bae30SDana Myers
db2bae30SDana Myers        if (ACPI_GET_DESCRIPTOR_TYPE (Operand[0]) == ACPI_DESC_TYPE_NAMED)
db2bae30SDana Myers        {
db2bae30SDana Myers            TempDesc = AcpiNsGetAttachedObject (
db2bae30SDana Myers                           (ACPI_NAMESPACE_NODE *) Operand[0]);
db2bae30SDana Myers            if (TempDesc &&
aa2aa9a6SDana Myers                 ((TempDesc->Common.Type == ACPI_TYPE_STRING) ||
aa2aa9a6SDana Myers                  (TempDesc->Common.Type == ACPI_TYPE_LOCAL_REFERENCE)))
db2bae30SDana Myers            {
db2bae30SDana Myers                Operand[0] = TempDesc;
db2bae30SDana Myers                AcpiUtAddReference (TempDesc);
db2bae30SDana Myers            }
db2bae30SDana Myers            else
db2bae30SDana Myers            {
db2bae30SDana Myers                Status = AE_AML_OPERAND_TYPE;
db2bae30SDana Myers                goto Cleanup;
db2bae30SDana Myers            }
db2bae30SDana Myers        }
db2bae30SDana Myers        else
db2bae30SDana Myers        {
aa2aa9a6SDana Myers            switch ((Operand[0])->Common.Type)
db2bae30SDana Myers            {
db2bae30SDana Myers            case ACPI_TYPE_LOCAL_REFERENCE:
db2bae30SDana Myers                /*
db2bae30SDana Myers                 * This is a DerefOf (LocalX | ArgX)
db2bae30SDana Myers                 *
db2bae30SDana Myers                 * Must resolve/dereference the local/arg reference first
db2bae30SDana Myers                 */
db2bae30SDana Myers                switch (Operand[0]->Reference.Class)
db2bae30SDana Myers                {
db2bae30SDana Myers                case ACPI_REFCLASS_LOCAL:
db2bae30SDana Myers                case ACPI_REFCLASS_ARG:
db2bae30SDana Myers
db2bae30SDana Myers                    /* Set Operand[0] to the value of the local/arg */
db2bae30SDana Myers
db2bae30SDana Myers                    Status = AcpiDsMethodDataGetValue (
db2bae30SDana Myers                        Operand[0]->Reference.Class,
db2bae30SDana Myers                        Operand[0]->Reference.Value,
db2bae30SDana Myers                        WalkState, &TempDesc);
db2bae30SDana Myers                    if (ACPI_FAILURE (Status))
db2bae30SDana Myers                    {
db2bae30SDana Myers                        goto Cleanup;
db2bae30SDana Myers                    }
db2bae30SDana Myers
db2bae30SDana Myers                    /*
db2bae30SDana Myers                     * Delete our reference to the input object and
db2bae30SDana Myers                     * point to the object just retrieved
db2bae30SDana Myers                     */
db2bae30SDana Myers                    AcpiUtRemoveReference (Operand[0]);
db2bae30SDana Myers                    Operand[0] = TempDesc;
db2bae30SDana Myers                    break;
db2bae30SDana Myers
db2bae30SDana Myers                case ACPI_REFCLASS_REFOF:
db2bae30SDana Myers
db2bae30SDana Myers                    /* Get the object to which the reference refers */
db2bae30SDana Myers
db2bae30SDana Myers                    TempDesc = Operand[0]->Reference.Object;
db2bae30SDana Myers                    AcpiUtRemoveReference (Operand[0]);
db2bae30SDana Myers                    Operand[0] = TempDesc;
db2bae30SDana Myers                    break;
db2bae30SDana Myers
db2bae30SDana Myers                default:
db2bae30SDana Myers
db2bae30SDana Myers                    /* Must be an Index op - handled below */
db2bae30SDana Myers                    break;
db2bae30SDana Myers                }
db2bae30SDana Myers                break;
db2bae30SDana Myers
db2bae30SDana Myers            case ACPI_TYPE_STRING:
*385cc6b4SJerry Jelinek
db2bae30SDana Myers                break;
db2bae30SDana Myers
db2bae30SDana Myers            default:
*385cc6b4SJerry Jelinek
db2bae30SDana Myers                Status = AE_AML_OPERAND_TYPE;
db2bae30SDana Myers                goto Cleanup;
db2bae30SDana Myers            }
db2bae30SDana Myers        }
db2bae30SDana Myers
db2bae30SDana Myers        if (ACPI_GET_DESCRIPTOR_TYPE (Operand[0]) != ACPI_DESC_TYPE_NAMED)
db2bae30SDana Myers        {
aa2aa9a6SDana Myers            if ((Operand[0])->Common.Type == ACPI_TYPE_STRING)
db2bae30SDana Myers            {
db2bae30SDana Myers                /*
db2bae30SDana Myers                 * This is a DerefOf (String). The string is a reference
db2bae30SDana Myers                 * to a named ACPI object.
db2bae30SDana Myers                 *
db2bae30SDana Myers                 * 1) Find the owning Node
db2bae30SDana Myers                 * 2) Dereference the node to an actual object. Could be a
db2bae30SDana Myers                 *    Field, so we need to resolve the node to a value.
db2bae30SDana Myers                 */
db2bae30SDana Myers                Status = AcpiNsGetNode (WalkState->ScopeInfo->Scope.Node,
db2bae30SDana Myers                    Operand[0]->String.Pointer,
db2bae30SDana Myers                    ACPI_NS_SEARCH_PARENT,
db2bae30SDana Myers                    ACPI_CAST_INDIRECT_PTR (
db2bae30SDana Myers                        ACPI_NAMESPACE_NODE, &ReturnDesc));
db2bae30SDana Myers                if (ACPI_FAILURE (Status))
db2bae30SDana Myers                {
db2bae30SDana Myers                    goto Cleanup;
db2bae30SDana Myers                }
db2bae30SDana Myers
db2bae30SDana Myers                Status = AcpiExResolveNodeToValue (
db2bae30SDana Myers                    ACPI_CAST_INDIRECT_PTR (
db2bae30SDana Myers                        ACPI_NAMESPACE_NODE, &ReturnDesc),
db2bae30SDana Myers                    WalkState);
db2bae30SDana Myers                goto Cleanup;
db2bae30SDana Myers            }
db2bae30SDana Myers        }
db2bae30SDana Myers
db2bae30SDana Myers        /* Operand[0] may have changed from the code above */
db2bae30SDana Myers
db2bae30SDana Myers        if (ACPI_GET_DESCRIPTOR_TYPE (Operand[0]) == ACPI_DESC_TYPE_NAMED)
db2bae30SDana Myers        {
db2bae30SDana Myers            /*
db2bae30SDana Myers             * This is a DerefOf (ObjectReference)
db2bae30SDana Myers             * Get the actual object from the Node (This is the dereference).
db2bae30SDana Myers             * This case may only happen when a LocalX or ArgX is
db2bae30SDana Myers             * dereferenced above.
db2bae30SDana Myers             */
db2bae30SDana Myers            ReturnDesc = AcpiNsGetAttachedObject (
db2bae30SDana Myers                (ACPI_NAMESPACE_NODE *) Operand[0]);
db2bae30SDana Myers            AcpiUtAddReference (ReturnDesc);
db2bae30SDana Myers        }
db2bae30SDana Myers        else
db2bae30SDana Myers        {
db2bae30SDana Myers            /*
db2bae30SDana Myers             * This must be a reference object produced by either the
db2bae30SDana Myers             * Index() or RefOf() operator
db2bae30SDana Myers             */
db2bae30SDana Myers            switch (Operand[0]->Reference.Class)
db2bae30SDana Myers            {
db2bae30SDana Myers            case ACPI_REFCLASS_INDEX:
db2bae30SDana Myers                /*
db2bae30SDana Myers                 * The target type for the Index operator must be
db2bae30SDana Myers                 * either a Buffer or a Package
db2bae30SDana Myers                 */
db2bae30SDana Myers                switch (Operand[0]->Reference.TargetType)
db2bae30SDana Myers                {
db2bae30SDana Myers                case ACPI_TYPE_BUFFER_FIELD:
db2bae30SDana Myers
db2bae30SDana Myers                    TempDesc = Operand[0]->Reference.Object;
db2bae30SDana Myers
db2bae30SDana Myers                    /*
db2bae30SDana Myers                     * Create a new object that contains one element of the
db2bae30SDana Myers                     * buffer -- the element pointed to by the index.
db2bae30SDana Myers                     *
db2bae30SDana Myers                     * NOTE: index into a buffer is NOT a pointer to a
db2bae30SDana Myers                     * sub-buffer of the main buffer, it is only a pointer to a
db2bae30SDana Myers                     * single element (byte) of the buffer!
57190917SDana Myers                     *
57190917SDana Myers                     * Since we are returning the value of the buffer at the
57190917SDana Myers                     * indexed location, we don't need to add an additional
57190917SDana Myers                     * reference to the buffer itself.
db2bae30SDana Myers                     */
57190917SDana Myers                    ReturnDesc = AcpiUtCreateIntegerObject ((UINT64)
57190917SDana Myers                        TempDesc->Buffer.Pointer[Operand[0]->Reference.Value]);
db2bae30SDana Myers                    if (!ReturnDesc)
db2bae30SDana Myers                    {
db2bae30SDana Myers                        Status = AE_NO_MEMORY;
db2bae30SDana Myers                        goto Cleanup;
db2bae30SDana Myers                    }
db2bae30SDana Myers                    break;
db2bae30SDana Myers
db2bae30SDana Myers                case ACPI_TYPE_PACKAGE:
db2bae30SDana Myers                    /*
db2bae30SDana Myers                     * Return the referenced element of the package. We must
db2bae30SDana Myers                     * add another reference to the referenced object, however.
db2bae30SDana Myers                     */
db2bae30SDana Myers                    ReturnDesc = *(Operand[0]->Reference.Where);
*385cc6b4SJerry Jelinek                    if (!ReturnDesc)
db2bae30SDana Myers                    {
*385cc6b4SJerry Jelinek                        /*
*385cc6b4SJerry Jelinek                         * Element is NULL, do not allow the dereference.
*385cc6b4SJerry Jelinek                         * This provides compatibility with other ACPI
*385cc6b4SJerry Jelinek                         * implementations.
*385cc6b4SJerry Jelinek                         */
*385cc6b4SJerry Jelinek                        return_ACPI_STATUS (AE_AML_UNINITIALIZED_ELEMENT);
db2bae30SDana Myers                    }
db2bae30SDana Myers
*385cc6b4SJerry Jelinek                    AcpiUtAddReference (ReturnDesc);
*385cc6b4SJerry Jelinek                    break;
db2bae30SDana Myers
db2bae30SDana Myers                default:
db2bae30SDana Myers
db2bae30SDana Myers                    ACPI_ERROR ((AE_INFO,
26f3cdf0SGordon Ross                        "Unknown Index TargetType 0x%X in reference object %p",
db2bae30SDana Myers                        Operand[0]->Reference.TargetType, Operand[0]));
*385cc6b4SJerry Jelinek
db2bae30SDana Myers                    Status = AE_AML_OPERAND_TYPE;
db2bae30SDana Myers                    goto Cleanup;
db2bae30SDana Myers                }
db2bae30SDana Myers                break;
db2bae30SDana Myers
db2bae30SDana Myers            case ACPI_REFCLASS_REFOF:
db2bae30SDana Myers
db2bae30SDana Myers                ReturnDesc = Operand[0]->Reference.Object;
db2bae30SDana Myers
db2bae30SDana Myers                if (ACPI_GET_DESCRIPTOR_TYPE (ReturnDesc) ==
db2bae30SDana Myers                    ACPI_DESC_TYPE_NAMED)
db2bae30SDana Myers                {
db2bae30SDana Myers                    ReturnDesc = AcpiNsGetAttachedObject (
db2bae30SDana Myers                        (ACPI_NAMESPACE_NODE *) ReturnDesc);
*385cc6b4SJerry Jelinek                    if (!ReturnDesc)
*385cc6b4SJerry Jelinek                    {
*385cc6b4SJerry Jelinek                        break;
db2bae30SDana Myers                    }
db2bae30SDana Myers
*385cc6b4SJerry Jelinek                   /*
*385cc6b4SJerry Jelinek                    * June 2013:
*385cc6b4SJerry Jelinek                    * BufferFields/FieldUnits require additional resolution
*385cc6b4SJerry Jelinek                    */
*385cc6b4SJerry Jelinek                    switch (ReturnDesc->Common.Type)
*385cc6b4SJerry Jelinek                    {
*385cc6b4SJerry Jelinek                    case ACPI_TYPE_BUFFER_FIELD:
*385cc6b4SJerry Jelinek                    case ACPI_TYPE_LOCAL_REGION_FIELD:
*385cc6b4SJerry Jelinek                    case ACPI_TYPE_LOCAL_BANK_FIELD:
*385cc6b4SJerry Jelinek                    case ACPI_TYPE_LOCAL_INDEX_FIELD:
*385cc6b4SJerry Jelinek
*385cc6b4SJerry Jelinek                        Status = AcpiExReadDataFromField (
*385cc6b4SJerry Jelinek                            WalkState, ReturnDesc, &TempDesc);
*385cc6b4SJerry Jelinek                        if (ACPI_FAILURE (Status))
*385cc6b4SJerry Jelinek                        {
*385cc6b4SJerry Jelinek                            goto Cleanup;
*385cc6b4SJerry Jelinek                        }
*385cc6b4SJerry Jelinek
*385cc6b4SJerry Jelinek                        ReturnDesc = TempDesc;
*385cc6b4SJerry Jelinek                        break;
*385cc6b4SJerry Jelinek
*385cc6b4SJerry Jelinek                    default:
*385cc6b4SJerry Jelinek
*385cc6b4SJerry Jelinek                        /* Add another reference to the object */
db2bae30SDana Myers
db2bae30SDana Myers                        AcpiUtAddReference (ReturnDesc);
db2bae30SDana Myers                        break;
*385cc6b4SJerry Jelinek                    }
*385cc6b4SJerry Jelinek                }
*385cc6b4SJerry Jelinek                break;
db2bae30SDana Myers
db2bae30SDana Myers            default:
*385cc6b4SJerry Jelinek
db2bae30SDana Myers                ACPI_ERROR ((AE_INFO,
26f3cdf0SGordon Ross                    "Unknown class in reference(%p) - 0x%2.2X",
db2bae30SDana Myers                    Operand[0], Operand[0]->Reference.Class));
db2bae30SDana Myers
db2bae30SDana Myers                Status = AE_TYPE;
db2bae30SDana Myers                goto Cleanup;
db2bae30SDana Myers            }
db2bae30SDana Myers        }
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    default:
db2bae30SDana Myers
26f3cdf0SGordon Ross        ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
db2bae30SDana Myers            WalkState->Opcode));
*385cc6b4SJerry Jelinek
db2bae30SDana Myers        Status = AE_AML_BAD_OPCODE;
db2bae30SDana Myers        goto Cleanup;
db2bae30SDana Myers    }
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana MyersCleanup:
db2bae30SDana Myers
db2bae30SDana Myers    /* Delete return object on error */
db2bae30SDana Myers
db2bae30SDana Myers    if (ACPI_FAILURE (Status))
db2bae30SDana Myers    {
db2bae30SDana Myers        AcpiUtRemoveReference (ReturnDesc);
db2bae30SDana Myers    }
db2bae30SDana Myers
db2bae30SDana Myers    /* Save return object on success */
db2bae30SDana Myers
db2bae30SDana Myers    else
db2bae30SDana Myers    {
db2bae30SDana Myers        WalkState->ResultObj = ReturnDesc;
db2bae30SDana Myers    }
db2bae30SDana Myers
db2bae30SDana Myers    return_ACPI_STATUS (Status);
db2bae30SDana Myers}