exconcat.c File Reference

#include "acpi.h"
#include "accommon.h"
#include "acinterp.h"
#include "amlresrc.h"

Include dependency graph for exconcat.c:

Go to the source code of this file.

Macros
#define	_COMPONENT   ACPI_EXECUTER

Functions
static ACPI_STATUS	AcpiExConvertToObjectTypeString (ACPI_OPERAND_OBJECT *ObjDesc, ACPI_OPERAND_OBJECT **ResultDesc)
ACPI_STATUS	AcpiExDoConcatenate (ACPI_OPERAND_OBJECT *Operand0, ACPI_OPERAND_OBJECT *Operand1, ACPI_OPERAND_OBJECT **ActualReturnDesc, ACPI_WALK_STATE *WalkState)
ACPI_STATUS	AcpiExConcatTemplate (ACPI_OPERAND_OBJECT *Operand0, ACPI_OPERAND_OBJECT *Operand1, ACPI_OPERAND_OBJECT **ActualReturnDesc, ACPI_WALK_STATE *WalkState)

Macro Definition Documentation

_COMPONENT

#define _COMPONENT   ACPI_EXECUTER

Definition at line 50 of file exconcat.c.

Function Documentation

AcpiExConcatTemplate()

ACPI_STATUS AcpiExConcatTemplate	(	ACPI_OPERAND_OBJECT *	Operand0,
		ACPI_OPERAND_OBJECT *	Operand1,
		ACPI_OPERAND_OBJECT **	ActualReturnDesc,
		ACPI_WALK_STATE *	WalkState
	)

Definition at line 388 of file exconcat.c.

{
    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;
    memcpy (NewBuf, Operand0->Buffer.Pointer, Length0);
    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);
}

Referenced by AcpiExOpcode_2A_1T_1R().

AcpiExConvertToObjectTypeString()

static ACPI_STATUS AcpiExConvertToObjectTypeString ( ACPI_OPERAND_OBJECT *  ObjDesc, ACPI_OPERAND_OBJECT **  ResultDesc  )

static

Definition at line 346 of file exconcat.c.

{
    ACPI_OPERAND_OBJECT     *ReturnDesc;
    const char              *TypeString;
 
 
    TypeString = AcpiUtGetTypeName (ObjDesc->Common.Type);
 
    ReturnDesc = AcpiUtCreateStringObject (
        ((ACPI_SIZE) strlen (TypeString) + 9)); /* 9 For "[ Object]" */
    if (!ReturnDesc)
    {
        return (AE_NO_MEMORY);
    }
 
    strcpy (ReturnDesc->String.Pointer, "[");
    strcat (ReturnDesc->String.Pointer, TypeString);
    strcat (ReturnDesc->String.Pointer, " Object]");
 
    *ResultDesc = ReturnDesc;
    return (AE_OK);
}

Referenced by AcpiExDoConcatenate().

AcpiExDoConcatenate()

ACPI_STATUS AcpiExDoConcatenate	(	ACPI_OPERAND_OBJECT *	Operand0,
		ACPI_OPERAND_OBJECT *	Operand1,
		ACPI_OPERAND_OBJECT **	ActualReturnDesc,
		ACPI_WALK_STATE *	WalkState
	)

Definition at line 85 of file exconcat.c.

{
    ACPI_OPERAND_OBJECT     *LocalOperand0 = Operand0;
    ACPI_OPERAND_OBJECT     *LocalOperand1 = Operand1;
    ACPI_OPERAND_OBJECT     *TempOperand1 = NULL;
    ACPI_OPERAND_OBJECT     *ReturnDesc;
    char                    *Buffer;
    ACPI_OBJECT_TYPE        Operand0Type;
    ACPI_OBJECT_TYPE        Operand1Type;
    ACPI_STATUS             Status;
 
 
    ACPI_FUNCTION_TRACE (ExDoConcatenate);
 
 
    /* Operand 0 preprocessing */
 
    switch (Operand0->Common.Type)
    {
    case ACPI_TYPE_INTEGER:
    case ACPI_TYPE_STRING:
    case ACPI_TYPE_BUFFER:
 
        Operand0Type = Operand0->Common.Type;
        break;
 
    default:
 
        /* For all other types, get the "object type" string */
 
        Status = AcpiExConvertToObjectTypeString (
            Operand0, &LocalOperand0);
        if (ACPI_FAILURE (Status))
        {
            goto Cleanup;
        }
 
        Operand0Type = ACPI_TYPE_STRING;
        break;
    }
 
    /* Operand 1 preprocessing */
 
    switch (Operand1->Common.Type)
    {
    case ACPI_TYPE_INTEGER:
    case ACPI_TYPE_STRING:
    case ACPI_TYPE_BUFFER:
 
        Operand1Type = Operand1->Common.Type;
        break;
 
    default:
 
        /* For all other types, get the "object type" string */
 
        Status = AcpiExConvertToObjectTypeString (
            Operand1, &LocalOperand1);
        if (ACPI_FAILURE (Status))
        {
            goto Cleanup;
        }
 
        Operand1Type = ACPI_TYPE_STRING;
        break;
    }
 
    /*
     * Convert the second operand if necessary. The first operand (0)
     * determines the type of the second operand (1) (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 (Operand0Type)
    {
    case ACPI_TYPE_INTEGER:
 
        Status = AcpiExConvertToInteger (LocalOperand1, &TempOperand1,
            ACPI_IMPLICIT_CONVERSION);
        break;
 
    case ACPI_TYPE_BUFFER:
 
        Status = AcpiExConvertToBuffer (LocalOperand1, &TempOperand1);
        break;
 
    case ACPI_TYPE_STRING:
 
        switch (Operand1Type)
        {
        case ACPI_TYPE_INTEGER:
        case ACPI_TYPE_STRING:
        case ACPI_TYPE_BUFFER:
 
            /* Other types have already been converted to string */
 
            Status = AcpiExConvertToString (
                LocalOperand1, &TempOperand1, ACPI_IMPLICIT_CONVERT_HEX);
            break;
 
        default:
 
            Status = AE_OK;
            break;
        }
        break;
 
    default:
 
        ACPI_ERROR ((AE_INFO, "Invalid object type: 0x%X",
            Operand0->Common.Type));
        Status = AE_AML_INTERNAL;
    }
 
    if (ACPI_FAILURE (Status))
    {
        goto Cleanup;
    }
 
    /* Take care with any newly created operand objects */
 
    if ((LocalOperand1 != Operand1) &&
        (LocalOperand1 != TempOperand1))
    {
        AcpiUtRemoveReference (LocalOperand1);
    }
 
    LocalOperand1 = TempOperand1;
 
    /*
     * 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, as per the ACPI spec:
     *
     * 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 (Operand0Type)
    {
    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;
        }
 
        Buffer = (char *) ReturnDesc->Buffer.Pointer;
 
        /* Copy the first integer, LSB first */
 
        memcpy (Buffer, &Operand0->Integer.Value,
            AcpiGbl_IntegerByteWidth);
 
        /* Copy the second integer (LSB first) after the first */
 
        memcpy (Buffer + AcpiGbl_IntegerByteWidth,
            &LocalOperand1->Integer.Value, AcpiGbl_IntegerByteWidth);
        break;
 
    case ACPI_TYPE_STRING:
 
        /* Result of two Strings is a String */
 
        ReturnDesc = AcpiUtCreateStringObject (
            ((ACPI_SIZE) LocalOperand0->String.Length +
            LocalOperand1->String.Length));
        if (!ReturnDesc)
        {
            Status = AE_NO_MEMORY;
            goto Cleanup;
        }
 
        Buffer = ReturnDesc->String.Pointer;
 
        /* Concatenate the strings */
 
        strcpy (Buffer, LocalOperand0->String.Pointer);
        strcat (Buffer, 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;
        }
 
        Buffer = (char *) ReturnDesc->Buffer.Pointer;
 
        /* Concatenate the buffers */
 
        memcpy (Buffer, Operand0->Buffer.Pointer,
            Operand0->Buffer.Length);
        memcpy (Buffer + 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: 0x%X",
            Operand0->Common.Type));
        Status = AE_AML_INTERNAL;
        goto Cleanup;
    }
 
    *ActualReturnDesc = ReturnDesc;
 
Cleanup:
    if (LocalOperand0 != Operand0)
    {
        AcpiUtRemoveReference (LocalOperand0);
    }
 
    if (LocalOperand1 != Operand1)
    {
        AcpiUtRemoveReference (LocalOperand1);
    }
 
    return_ACPI_STATUS (Status);
}

Referenced by AcpiExOpcode_2A_1T_1R().