exoparg2.c File Reference

#include "acpi.h"
#include "accommon.h"
#include "acparser.h"
#include "acinterp.h"
#include "acevents.h"
#include "amlcode.h"

Include dependency graph for exoparg2.c:

Go to the source code of this file.

Macros
#define	_COMPONENT   ACPI_EXECUTER

Functions
ACPI_STATUS	AcpiExOpcode_2A_0T_0R (ACPI_WALK_STATE *WalkState)
ACPI_STATUS	AcpiExOpcode_2A_2T_1R (ACPI_WALK_STATE *WalkState)
ACPI_STATUS	AcpiExOpcode_2A_1T_1R (ACPI_WALK_STATE *WalkState)
ACPI_STATUS	AcpiExOpcode_2A_0T_1R (ACPI_WALK_STATE *WalkState)

Macro Definition Documentation

_COMPONENT

#define _COMPONENT   ACPI_EXECUTER

Definition at line 52 of file exoparg2.c.

Function Documentation

AcpiExOpcode_2A_0T_0R()

ACPI_STATUS AcpiExOpcode_2A_0T_0R

(

ACPI_WALK_STATE *

WalkState

)

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. !

Definition at line 95 of file exoparg2.c.

{
    ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
    ACPI_NAMESPACE_NODE     *Node;
    UINT32                  Value;
    ACPI_STATUS             Status = AE_OK;
 
 
    ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_0T_0R,
            AcpiPsGetOpcodeName (WalkState->Opcode));
 
 
    /* Examine the opcode */
 
    switch (WalkState->Opcode)
    {
    case AML_NOTIFY_OP:         /* Notify (NotifyObject, NotifyValue) */
 
        /* The first operand is a namespace node */
 
        Node = (ACPI_NAMESPACE_NODE *) Operand[0];
 
        /* Second value is the notify value */
 
        Value = (UINT32) Operand[1]->Integer.Value;
 
        /* Are notifies allowed on this object? */
 
        if (!AcpiEvIsNotifyObject (Node))
        {
            ACPI_ERROR ((AE_INFO,
                "Unexpected notify object type [%s]",
                AcpiUtGetTypeName (Node->Type)));
 
            Status = AE_AML_OPERAND_TYPE;
            break;
        }
 
        /*
         * Dispatch the notify to the appropriate handler
         * NOTE: the request is queued for execution after this method
         * completes. The notify handlers are NOT invoked synchronously
         * from this thread -- because handlers may in turn run other
         * control methods.
         */
        Status = AcpiEvQueueNotifyRequest (Node, Value);
        break;
 
    default:
 
        ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
            WalkState->Opcode));
        Status = AE_AML_BAD_OPCODE;
    }
 
    return_ACPI_STATUS (Status);
}

AcpiExOpcode_2A_0T_1R()

ACPI_STATUS AcpiExOpcode_2A_0T_1R

(

ACPI_WALK_STATE *

WalkState

)

Definition at line 540 of file exoparg2.c.

{
    ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
    ACPI_OPERAND_OBJECT     *ReturnDesc = NULL;
    ACPI_STATUS             Status = AE_OK;
    BOOLEAN                 LogicalResult = FALSE;
 
 
    ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_0T_1R,
        AcpiPsGetOpcodeName (WalkState->Opcode));
 
 
    /* Create the internal return object */
 
    ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
    if (!ReturnDesc)
    {
        Status = AE_NO_MEMORY;
        goto Cleanup;
    }
 
    /* Execute the Opcode */
 
    if (WalkState->OpInfo->Flags & AML_LOGICAL_NUMERIC)
    {
        /* LogicalOp  (Operand0, Operand1) */
 
        Status = AcpiExDoLogicalNumericOp (WalkState->Opcode,
            Operand[0]->Integer.Value, Operand[1]->Integer.Value,
            &LogicalResult);
        goto StoreLogicalResult;
    }
    else if (WalkState->OpInfo->Flags & AML_LOGICAL)
    {
        /* LogicalOp  (Operand0, Operand1) */
 
        Status = AcpiExDoLogicalOp (WalkState->Opcode, Operand[0],
            Operand[1], &LogicalResult);
        goto StoreLogicalResult;
    }
 
    switch (WalkState->Opcode)
    {
    case AML_ACQUIRE_OP:            /* Acquire (MutexObject, Timeout) */
 
        Status = AcpiExAcquireMutex (Operand[1], Operand[0], WalkState);
        if (Status == AE_TIME)
        {
            LogicalResult = TRUE;       /* TRUE = Acquire timed out */
            Status = AE_OK;
        }
        break;
 
 
    case AML_WAIT_OP:               /* Wait (EventObject, Timeout) */
 
        Status = AcpiExSystemWaitEvent (Operand[1], Operand[0]);
        if (Status == AE_TIME)
        {
            LogicalResult = TRUE;       /* TRUE, Wait timed out */
            Status = AE_OK;
        }
        break;
 
    default:
 
        ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
            WalkState->Opcode));
 
        Status = AE_AML_BAD_OPCODE;
        goto Cleanup;
    }
 
 
StoreLogicalResult:
    /*
     * Set return value to according to LogicalResult. logical TRUE (all ones)
     * Default is FALSE (zero)
     */
    if (LogicalResult)
    {
        ReturnDesc->Integer.Value = ACPI_UINT64_MAX;
    }
 
Cleanup:
 
    /* Delete return object on error */
 
    if (ACPI_FAILURE (Status))
    {
        AcpiUtRemoveReference (ReturnDesc);
    }
 
    /* Save return object on success */
 
    else
    {
        WalkState->ResultObj = ReturnDesc;
    }
 
    return_ACPI_STATUS (Status);
}

AcpiExOpcode_2A_1T_1R()

ACPI_STATUS AcpiExOpcode_2A_1T_1R

(

ACPI_WALK_STATE *

WalkState

)

Definition at line 279 of file exoparg2.c.

{
    ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
    ACPI_OPERAND_OBJECT     *ReturnDesc = NULL;
    UINT64                  Index;
    ACPI_STATUS             Status = AE_OK;
    ACPI_SIZE               Length = 0;
 
 
    ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_1T_1R,
        AcpiPsGetOpcodeName (WalkState->Opcode));
 
 
    /* Execute the opcode */
 
    if (WalkState->OpInfo->Flags & AML_MATH)
    {
        /* All simple math opcodes (add, etc.) */
 
        ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
        if (!ReturnDesc)
        {
            Status = AE_NO_MEMORY;
            goto Cleanup;
        }
 
        ReturnDesc->Integer.Value = AcpiExDoMathOp (
            WalkState->Opcode,
            Operand[0]->Integer.Value,
            Operand[1]->Integer.Value);
        goto StoreResultToTarget;
    }
 
    switch (WalkState->Opcode)
    {
    case AML_MOD_OP: /* Mod (Dividend, Divisor, RemainderResult (ACPI 2.0) */
 
        ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
        if (!ReturnDesc)
        {
            Status = AE_NO_MEMORY;
            goto Cleanup;
        }
 
        /* ReturnDesc will contain the remainder */
 
        Status = AcpiUtDivide (
            Operand[0]->Integer.Value,
            Operand[1]->Integer.Value,
            NULL,
            &ReturnDesc->Integer.Value);
        break;
 
    case AML_CONCATENATE_OP: /* Concatenate (Data1, Data2, Result) */
 
        Status = AcpiExDoConcatenate (
            Operand[0], Operand[1], &ReturnDesc, WalkState);
        break;
 
    case AML_TO_STRING_OP: /* ToString (Buffer, Length, Result) (ACPI 2.0) */
        /*
         * Input object is guaranteed to be a buffer at this point (it may have
         * been converted.)  Copy the raw buffer data to a new object of
         * type String.
         */
 
        /*
         * Get the length of the new string. It is the smallest of:
         * 1) Length of the input buffer
         * 2) Max length as specified in the ToString operator
         * 3) Length of input buffer up to a zero byte (null terminator)
         *
         * NOTE: A length of zero is ok, and will create a zero-length, null
         *       terminated string.
         */
        while ((Length < Operand[0]->Buffer.Length) &&  /* Length of input buffer */
               (Length < Operand[1]->Integer.Value) &&  /* Length operand */
               (Operand[0]->Buffer.Pointer[Length]))    /* Null terminator */
        {
            Length++;
        }
 
        /* Allocate a new string object */
 
        ReturnDesc = AcpiUtCreateStringObject (Length);
        if (!ReturnDesc)
        {
            Status = AE_NO_MEMORY;
            goto Cleanup;
        }
 
        /*
         * Copy the raw buffer data with no transform.
         * (NULL terminated already)
         */
        memcpy (ReturnDesc->String.Pointer,
            Operand[0]->Buffer.Pointer, Length);
        break;
 
    case AML_CONCATENATE_TEMPLATE_OP:
 
        /* ConcatenateResTemplate (Buffer, Buffer, Result) (ACPI 2.0) */
 
        Status = AcpiExConcatTemplate (
            Operand[0], Operand[1], &ReturnDesc, WalkState);
        break;
 
    case AML_INDEX_OP:              /* Index (Source Index Result) */
 
        /* Create the internal return object */
 
        ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE);
        if (!ReturnDesc)
        {
            Status = AE_NO_MEMORY;
            goto Cleanup;
        }
 
        /* Initialize the Index reference object */
 
        Index = Operand[1]->Integer.Value;
        ReturnDesc->Reference.Value = (UINT32) Index;
        ReturnDesc->Reference.Class = ACPI_REFCLASS_INDEX;
 
        /*
         * At this point, the Source operand is a String, Buffer, or Package.
         * Verify that the index is within range.
         */
        switch ((Operand[0])->Common.Type)
        {
        case ACPI_TYPE_STRING:
 
            if (Index >= Operand[0]->String.Length)
            {
                Length = Operand[0]->String.Length;
                Status = AE_AML_STRING_LIMIT;
            }
 
            ReturnDesc->Reference.TargetType = ACPI_TYPE_BUFFER_FIELD;
            ReturnDesc->Reference.IndexPointer =
                &(Operand[0]->Buffer.Pointer [Index]);
            break;
 
        case ACPI_TYPE_BUFFER:
 
            if (Index >= Operand[0]->Buffer.Length)
            {
                Length = Operand[0]->Buffer.Length;
                Status = AE_AML_BUFFER_LIMIT;
            }
 
            ReturnDesc->Reference.TargetType = ACPI_TYPE_BUFFER_FIELD;
            ReturnDesc->Reference.IndexPointer =
                &(Operand[0]->Buffer.Pointer [Index]);
            break;
 
        case ACPI_TYPE_PACKAGE:
 
            if (Index >= Operand[0]->Package.Count)
            {
                Length = Operand[0]->Package.Count;
                Status = AE_AML_PACKAGE_LIMIT;
            }
 
            ReturnDesc->Reference.TargetType = ACPI_TYPE_PACKAGE;
            ReturnDesc->Reference.Where =
                &Operand[0]->Package.Elements [Index];
            break;
 
        default:
 
            ACPI_ERROR ((AE_INFO,
                "Invalid object type: %X", (Operand[0])->Common.Type));
            Status = AE_AML_INTERNAL;
            goto Cleanup;
        }
 
        /* Failure means that the Index was beyond the end of the object */
 
        if (ACPI_FAILURE (Status))
        {
            ACPI_BIOS_EXCEPTION ((AE_INFO, Status,
                "Index (0x%X%8.8X) is beyond end of object (length 0x%X)",
                ACPI_FORMAT_UINT64 (Index), (UINT32) Length));
            goto Cleanup;
        }
 
        /*
         * Save the target object and add a reference to it for the life
         * of the index
         */
        ReturnDesc->Reference.Object = Operand[0];
        AcpiUtAddReference (Operand[0]);
 
        /* Store the reference to the Target */
 
        Status = AcpiExStore (ReturnDesc, Operand[2], WalkState);
 
        /* Return the reference */
 
        WalkState->ResultObj = ReturnDesc;
        goto Cleanup;
 
    default:
 
        ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
            WalkState->Opcode));
        Status = AE_AML_BAD_OPCODE;
        break;
    }
 
 
StoreResultToTarget:
 
    if (ACPI_SUCCESS (Status))
    {
        /*
         * Store the result of the operation (which is now in ReturnDesc) into
         * the Target descriptor.
         */
        Status = AcpiExStore (ReturnDesc, Operand[2], WalkState);
        if (ACPI_FAILURE (Status))
        {
            goto Cleanup;
        }
 
        if (!WalkState->ResultObj)
        {
            WalkState->ResultObj = ReturnDesc;
        }
    }
 
 
Cleanup:
 
    /* Delete return object on error */
 
    if (ACPI_FAILURE (Status))
    {
        AcpiUtRemoveReference (ReturnDesc);
        WalkState->ResultObj = NULL;
    }
 
    return_ACPI_STATUS (Status);
}

AcpiExOpcode_2A_2T_1R()

ACPI_STATUS AcpiExOpcode_2A_2T_1R

(

ACPI_WALK_STATE *

WalkState

)

Definition at line 169 of file exoparg2.c.

{
    ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
    ACPI_OPERAND_OBJECT     *ReturnDesc1 = NULL;
    ACPI_OPERAND_OBJECT     *ReturnDesc2 = NULL;
    ACPI_STATUS             Status;
 
 
    ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_2T_1R,
        AcpiPsGetOpcodeName (WalkState->Opcode));
 
 
    /* Execute the opcode */
 
    switch (WalkState->Opcode)
    {
    case AML_DIVIDE_OP:
 
        /* Divide (Dividend, Divisor, RemainderResult QuotientResult) */
 
        ReturnDesc1 = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
        if (!ReturnDesc1)
        {
            Status = AE_NO_MEMORY;
            goto Cleanup;
        }
 
        ReturnDesc2 = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
        if (!ReturnDesc2)
        {
            Status = AE_NO_MEMORY;
            goto Cleanup;
        }
 
        /* Quotient to ReturnDesc1, remainder to ReturnDesc2 */
 
        Status = AcpiUtDivide (
            Operand[0]->Integer.Value,
            Operand[1]->Integer.Value,
            &ReturnDesc1->Integer.Value,
            &ReturnDesc2->Integer.Value);
        if (ACPI_FAILURE (Status))
        {
            goto Cleanup;
        }
        break;
 
    default:
 
        ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
            WalkState->Opcode));
 
        Status = AE_AML_BAD_OPCODE;
        goto Cleanup;
    }
 
    /* Store the results to the target reference operands */
 
    Status = AcpiExStore (ReturnDesc2, Operand[2], WalkState);
    if (ACPI_FAILURE (Status))
    {
        goto Cleanup;
    }
 
    Status = AcpiExStore (ReturnDesc1, Operand[3], WalkState);
    if (ACPI_FAILURE (Status))
    {
        goto Cleanup;
    }
 
Cleanup:
    /*
     * Since the remainder is not returned indirectly, remove a reference to
     * it. Only the quotient is returned indirectly.
     */
    AcpiUtRemoveReference (ReturnDesc2);
 
    if (ACPI_FAILURE (Status))
    {
        /* Delete the return object */
 
        AcpiUtRemoveReference (ReturnDesc1);
    }
 
    /* Save return object (the remainder) on success */
 
    else
    {
        WalkState->ResultObj = ReturnDesc1;
    }
 
    return_ACPI_STATUS (Status);
}