C++ ACPI_FREE函数代码示例

//.........这里部分代码省略.........
        {
            AcpiDmDumpTree (AcpiGbl_ParseOpRoot);
        }

        /* Find possible calls to external control methods */

        AcpiDmFindOrphanMethods (AcpiGbl_ParseOpRoot);

        /* Convert fixed-offset references to resource descriptors to symbolic references */

        AcpiDmConvertResourceIndexes (AcpiGbl_ParseOpRoot, AcpiGbl_RootNode);

        /*
         * If we found any external control methods, we must reparse the entire
         * tree with the new information (namely, the number of arguments per
         * method)
         */
        if (AcpiDmGetExternalMethodCount ())
        {
            fprintf (stderr,
                "\nFound %d external control methods, reparsing with new information\n",
                AcpiDmGetExternalMethodCount ());

            /*
             * Reparse, rebuild namespace. no need to xref namespace
             */
            AcpiPsDeleteParseTree (AcpiGbl_ParseOpRoot);
            AcpiNsDeleteNamespaceSubtree (AcpiGbl_RootNode);

            AcpiGbl_RootNode                    = NULL;
            AcpiGbl_RootNodeStruct.Name.Integer = ACPI_ROOT_NAME;
            AcpiGbl_RootNodeStruct.DescriptorType = ACPI_DESC_TYPE_NAMED;
            AcpiGbl_RootNodeStruct.Type         = ACPI_TYPE_DEVICE;
            AcpiGbl_RootNodeStruct.Child        = NULL;
            AcpiGbl_RootNodeStruct.Peer         = NULL;
            AcpiGbl_RootNodeStruct.Object       = NULL;
            AcpiGbl_RootNodeStruct.Flags        = ANOBJ_END_OF_PEER_LIST;

            Status = AcpiNsRootInitialize ();
            AcpiDmAddExternalsToNamespace ();

            /* Parse table. No need to reload it, however (FALSE) */

            Status = AdParseTable (Table, NULL, FALSE, FALSE);
            if (ACPI_FAILURE (Status))
            {
                AcpiOsPrintf ("Could not parse ACPI tables, %s\n",
                    AcpiFormatException (Status));
                goto Cleanup;
            }

            if (AslCompilerdebug)
            {
                AcpiOsPrintf ("/**** After second load and resource conversion\n");
                LsSetupNsList (File);
                LsDisplayNamespace ();
                AcpiOsPrintf ("*****/\n");

                AcpiDmDumpTree (AcpiGbl_ParseOpRoot);
            }
        }

        /* Optional displays */

        if (AcpiGbl_DbOpt_disasm)
        {
            AdDisplayTables (Filename, Table);
            fprintf (stderr,
                "Disassembly completed, written to \"%s\"\n",
                DisasmFilename);
        }
    }

Cleanup:

    if (Table && !AcpiUtIsAmlTable (Table))
    {
        ACPI_FREE (Table);
    }

    if (DisasmFilename)
    {
        ACPI_FREE (DisasmFilename);
    }

    if (OutToFile && File)
    {

#ifdef ASL_DISASM_DEBUG
        LsSetupNsList (File);
        LsDisplayNamespace ();
#endif
        fclose (File);
        AcpiOsRedirectOutput (stdout);
    }

    AcpiPsDeleteParseTree (AcpiGbl_ParseOpRoot);
    AcpiGbl_ParseOpRoot = NULL;
    return (Status);
}

//.........这里部分代码省略.........
    {
        WalkInfo->Num_STA++;
    }

    /*
     * Examine the PRESENT and FUNCTIONING status bits
     *
     * Note: ACPI spec does not seem to specify behavior for the present but
     * not functioning case, so we assume functioning if present.
     */
    if (!(Flags & ACPI_STA_DEVICE_PRESENT))
    {
        /* Device is not present, we must examine the Functioning bit */

        if (Flags & ACPI_STA_DEVICE_FUNCTIONING)
        {
            /*
             * Device is not present but is "functioning". In this case,
             * we will not run _INI, but we continue to examine the children
             * of this device.
             *
             * From the ACPI spec, description of _STA: (Note - no mention
             * of whether to run _INI or not on the device in question)
             *
             * "_STA may return bit 0 clear (not present) with bit 3 set
             * (device is functional). This case is used to indicate a valid
             * device for which no device driver should be loaded (for example,
             * a bridge device.) Children of this device may be present and
             * valid. OSPM should continue enumeration below a device whose
             * _STA returns this bit combination"
             */
            return_ACPI_STATUS (AE_OK);
        }
        else
        {
            /*
             * Device is not present and is not functioning. We must abort the
             * walk of this subtree immediately -- don't look at the children
             * of such a device.
             *
             * From the ACPI spec, description of _INI:
             *
             * "If the _STA method indicates that the device is not present,
             * OSPM will not run the _INI and will not examine the children
             * of the device for _INI methods"
             */
            return_ACPI_STATUS (AE_CTRL_DEPTH);
        }
    }

    /*
     * The device is present or is assumed present if no _STA exists.
     * Run the _INI if it exists (not required to exist)
     *
     * Note: We know there is an _INI within this subtree, but it may not be
     * under this particular device, it may be lower in the branch.
     */
    ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (
        ACPI_TYPE_METHOD, DeviceNode, METHOD_NAME__INI));

    memset (Info, 0, sizeof (ACPI_EVALUATE_INFO));
    Info->PrefixNode = DeviceNode;
    Info->RelativePathname = __UNCONST(METHOD_NAME__INI);
    Info->Parameters = NULL;
    Info->Flags = ACPI_IGNORE_RETURN_VALUE;

    Status = AcpiNsEvaluate (Info);
    if (ACPI_SUCCESS (Status))
    {
        WalkInfo->Num_INI++;
    }

#ifdef ACPI_DEBUG_OUTPUT
    else if (Status != AE_NOT_FOUND)
    {
        /* Ignore error and move on to next device */

        char *ScopeName = AcpiNsGetExternalPathname (Info->Node);

        ACPI_EXCEPTION ((AE_INFO, Status, "during %s._INI execution",
            ScopeName));
        ACPI_FREE (ScopeName);
    }
#endif

    /* Ignore errors from above */

    Status = AE_OK;

    /*
     * The _INI method has been run if present; call the Global Initialization
     * Handler for this device.
     */
    if (AcpiGbl_InitHandler)
    {
        Status = AcpiGbl_InitHandler (DeviceNode, ACPI_INIT_DEVICE_INI);
    }

    return_ACPI_STATUS (Status);
}

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);
}

//.........这里部分代码省略.........
    {
        AcpiOsPrintf (" Ignoring zero length buffer");
        return (AE_OK);
    }

    /* Allocate a local buffer */

    Buffer = ACPI_ALLOCATE_ZEROED (ByteLength);
    if (!Buffer)
    {
        return (AE_NO_MEMORY);
    }

    /* Read the original value */

    Status = AcpiDbReadFromObject (Node, ACPI_TYPE_BUFFER, &Temp1);
    if (ACPI_FAILURE (Status))
    {
        goto Exit;
    }

    /* Emit a few bytes of the buffer */

    AcpiOsPrintf (" (%4.4X/%3.3X)", BitLength, Temp1->Buffer.Length);
    for (i = 0; ((i < 4) && (i < ByteLength)); i++)
    {
        AcpiOsPrintf (" %2.2X", Temp1->Buffer.Pointer[i]);
    }
    AcpiOsPrintf ("...  ");

    /*
     * Write a new value.
     *
     * Handle possible extra bits at the end of the buffer. Can
     * happen for FieldUnits larger than an integer, but the bit
     * count is not an integral number of bytes. Zero out the
     * unused bits.
     */
    memset (Buffer, BUFFER_FILL_VALUE, ByteLength);
    ExtraBits = BitLength % 8;
    if (ExtraBits)
    {
        Buffer [ByteLength - 1] = ACPI_MASK_BITS_ABOVE (ExtraBits);
    }

    WriteValue.Type = ACPI_TYPE_BUFFER;
    WriteValue.Buffer.Length = ByteLength;
    WriteValue.Buffer.Pointer = Buffer;

    Status = AcpiDbWriteToObject (Node, &WriteValue);
    if (ACPI_FAILURE (Status))
    {
        goto Exit;
    }

    /* Ensure that we can read back the new value */

    Status = AcpiDbReadFromObject (Node, ACPI_TYPE_BUFFER, &Temp2);
    if (ACPI_FAILURE (Status))
    {
        goto Exit;
    }

    if (memcmp (Temp2->Buffer.Pointer, Buffer, ByteLength))
    {
        AcpiOsPrintf (" MISMATCH 2: New buffer value");
    }

    /* Write back the original value */

    WriteValue.Buffer.Length = ByteLength;
    WriteValue.Buffer.Pointer = Temp1->Buffer.Pointer;

    Status = AcpiDbWriteToObject (Node, &WriteValue);
    if (ACPI_FAILURE (Status))
    {
        goto Exit;
    }

    /* Ensure that we can read back the original value */

    Status = AcpiDbReadFromObject (Node, ACPI_TYPE_BUFFER, &Temp3);
    if (ACPI_FAILURE (Status))
    {
        goto Exit;
    }

    if (memcmp (Temp1->Buffer.Pointer,
            Temp3->Buffer.Pointer, ByteLength))
    {
        AcpiOsPrintf (" MISMATCH 3: While restoring original buffer");
    }

Exit:
    ACPI_FREE (Buffer);
    if (Temp1) {AcpiOsFree (Temp1);}
    if (Temp2) {AcpiOsFree (Temp2);}
    if (Temp3) {AcpiOsFree (Temp3);}
    return (Status);
}

//.........这里部分代码省略.........
	acpi_status status;

	/* Object must be of type Package with at least one Buffer element */

	if (obj_desc->type != ACPI_TYPE_PACKAGE) {
		return;
	}

	buffer_desc = &obj_desc->package.elements[0];
	if (buffer_desc->type != ACPI_TYPE_BUFFER) {
		return;
	}

	/* Convert _PLD buffer to local _PLD struct */

	status = acpi_decode_pld_buffer(buffer_desc->buffer.pointer,
					buffer_desc->buffer.length, &pld_info);
	if (ACPI_FAILURE(status)) {
		return;
	}

	/* Encode local _PLD struct back to a _PLD buffer */

	new_buffer = acpi_db_encode_pld_buffer(pld_info);
	if (!new_buffer) {
		goto exit;
	}

	/* The two bit-packed buffers should match */

	if (memcmp(new_buffer, buffer_desc->buffer.pointer,
		   buffer_desc->buffer.length)) {
		acpi_os_printf
		    ("Converted _PLD buffer does not compare. New:\n");

		acpi_ut_dump_buffer(new_buffer,
				    buffer_desc->buffer.length, DB_BYTE_DISPLAY,
				    0);
	}

	/* First 32-bit dword */

	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Revision", pld_info->revision);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_IgnoreColor",
		       pld_info->ignore_color);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Red", pld_info->red);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Green", pld_info->green);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Blue", pld_info->blue);

	/* Second 32-bit dword */

	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Width", pld_info->width);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Height", pld_info->height);

	/* Third 32-bit dword */

	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_UserVisible",
		       pld_info->user_visible);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Dock", pld_info->dock);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Lid", pld_info->lid);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Panel", pld_info->panel);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_VerticalPosition",
		       pld_info->vertical_position);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_HorizontalPosition",
		       pld_info->horizontal_position);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Shape", pld_info->shape);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_GroupOrientation",
		       pld_info->group_orientation);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_GroupToken",
		       pld_info->group_token);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_GroupPosition",
		       pld_info->group_position);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Bay", pld_info->bay);

	/* Fourth 32-bit dword */

	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Ejectable", pld_info->ejectable);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_EjectRequired",
		       pld_info->ospm_eject_required);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_CabinetNumber",
		       pld_info->cabinet_number);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_CardCageNumber",
		       pld_info->card_cage_number);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Reference", pld_info->reference);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Rotation", pld_info->rotation);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Order", pld_info->order);

	/* Fifth 32-bit dword */

	if (buffer_desc->buffer.length > 16) {
		acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_VerticalOffset",
			       pld_info->vertical_offset);
		acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_HorizontalOffset",
			       pld_info->horizontal_offset);
	}

	ACPI_FREE(new_buffer);
exit:
	ACPI_FREE(pld_info);
}

//.........这里部分代码省略.........
    {
        HidString = MpGetHidViaNamestring (Info->DeviceName);

        /* Print header info for the controller itself */

        if (!PrevDeviceName ||
            ACPI_STRCMP (PrevDeviceName, Info->DeviceName))
        {
            FlPrintFile (ASL_FILE_MAP_OUTPUT,
                "\n\nGPIO Controller:  %-8s  %-28s",
                HidString, Info->DeviceName);

            HidInfo = AcpiAhMatchHardwareId (HidString);
            if (HidInfo)
            {
                FlPrintFile (ASL_FILE_MAP_OUTPUT, "  // %s",
                    HidInfo->Description);
            }

            FlPrintFile (ASL_FILE_MAP_OUTPUT,
                "\n\nPin   Type     Direction    Polarity"
                "    Dest _HID  Destination\n");
        }

        PrevDeviceName = Info->DeviceName;

        /* Setup various strings based upon the type (GpioInt or GpioIo) */

        switch (Info->Type)
        {
        case AML_RESOURCE_GPIO_TYPE_INT:

            Type = "GpioInt";
            Direction = "-Interrupt-";
            Polarity = PolarityDecode[Info->Polarity];
            break;

        case AML_RESOURCE_GPIO_TYPE_IO:

            Type = "GpioIo ";
            Direction = DirectionDecode[Info->Direction];
            Polarity = "          ";
            break;

        default:
            continue;
        }

        /* Emit the GPIO info */

        FlPrintFile (ASL_FILE_MAP_OUTPUT, "%4.4X  %s  %s  %s  ",
            Info->PinNumber, Type, Direction, Polarity);

        ParentPathname = NULL;
        HidString = MpGetConnectionInfo (Info->Op, Info->PinIndex,
            &Info->TargetNode, &ParentPathname);
        if (HidString)
        {
            /*
             * This is a Connection() field
             * Attempt to find all references to the field.
             */
            FlPrintFile (ASL_FILE_MAP_OUTPUT, "%8s   %-28s",
                HidString, ParentPathname);

            MpXrefDevices (Info);
        }
        else
        {
            /*
             * For Devices, attempt to get the _HID description string.
             * Failing that (many _HIDs are not recognized), attempt to
             * get the _DDN description string.
             */
            HidString = MpGetParentDeviceHid (Info->Op, &Info->TargetNode,
                &ParentPathname);

            FlPrintFile (ASL_FILE_MAP_OUTPUT, "%8s   %-28s",
                HidString, ParentPathname);

            /* Get the _HID description or _DDN string */

            HidInfo = AcpiAhMatchHardwareId (HidString);
            if (HidInfo)
            {
                FlPrintFile (ASL_FILE_MAP_OUTPUT, "  // %s",
                    HidInfo->Description);
            }
            else if ((Description = MpGetDdnValue (ParentPathname)))
            {
                FlPrintFile (ASL_FILE_MAP_OUTPUT, "  // %s (_DDN)",
                    Description);
            }
        }

        FlPrintFile (ASL_FILE_MAP_OUTPUT, "\n");
        ACPI_FREE (ParentPathname);
        Info = Info->Next;
    }
}

//.........这里部分代码省略.........
    const AH_DEVICE_ID      *HidInfo;
    const char              *Description;
    AML_RESOURCE            *Resource;


    /* Walk the constructed serial descriptor list */

    Info = Gbl_SerialList;
    while (Info)
    {
        Resource = Info->Resource;
        switch (Resource->CommonSerialBus.Type)
        {
        case AML_RESOURCE_I2C_SERIALBUSTYPE:
            Type = "I2C ";
            break;

        case AML_RESOURCE_SPI_SERIALBUSTYPE:
            Type = "SPI ";
            break;

        case AML_RESOURCE_UART_SERIALBUSTYPE:
            Type = "UART";
            break;

        default:
            Type = "UNKN";
            break;
        }

        HidString = MpGetHidViaNamestring (Info->DeviceName);

        /* Print header info for the controller itself */

        if (!PrevDeviceName ||
            ACPI_STRCMP (PrevDeviceName, Info->DeviceName))
        {
            FlPrintFile (ASL_FILE_MAP_OUTPUT, "\n\n%s Controller:  ",
                Type);
            FlPrintFile (ASL_FILE_MAP_OUTPUT, "%-8s  %-28s",
                HidString, Info->DeviceName);

            HidInfo = AcpiAhMatchHardwareId (HidString);
            if (HidInfo)
            {
                FlPrintFile (ASL_FILE_MAP_OUTPUT, "  // %s",
                    HidInfo->Description);
            }

            FlPrintFile (ASL_FILE_MAP_OUTPUT, "\n\n");
            FlPrintFile (ASL_FILE_MAP_OUTPUT,
                "Type  Address   Speed      Dest _HID  Destination\n");
        }

        PrevDeviceName = Info->DeviceName;

        FlPrintFile (ASL_FILE_MAP_OUTPUT, "%s   %4.4X    %8.8X    ",
            Type, Info->Address, Info->Speed);

        ParentPathname = NULL;
        HidString = MpGetConnectionInfo (Info->Op, 0, &Info->TargetNode,
            &ParentPathname);
        if (HidString)
        {
            /*
             * This is a Connection() field
             * Attempt to find all references to the field.
             */
            FlPrintFile (ASL_FILE_MAP_OUTPUT, "%8s   %-28s",
                HidString, ParentPathname);
        }
        else
        {
            /* Normal resource template */

            HidString = MpGetParentDeviceHid (Info->Op, &Info->TargetNode,
                &ParentPathname);
            FlPrintFile (ASL_FILE_MAP_OUTPUT, "%8s   %-28s",
                HidString, ParentPathname);

            /* Get the _HID description or _DDN string */

            HidInfo = AcpiAhMatchHardwareId (HidString);
            if (HidInfo)
            {
                FlPrintFile (ASL_FILE_MAP_OUTPUT, "  // %s",
                    HidInfo->Description);
            }
            else if ((Description = MpGetDdnValue (ParentPathname)))
            {
                FlPrintFile (ASL_FILE_MAP_OUTPUT, "  // %s (_DDN)",
                    Description);
            }
        }

        FlPrintFile (ASL_FILE_MAP_OUTPUT, "\n");
        ACPI_FREE (ParentPathname);
        Info = Info->Next;
    }
}

//.........这里部分代码省略.........
            ASL_NO_ABORT);
        return_VOID;
    }
    TargetPath.Length--;    /* Subtract one for null terminator */

    /* CurrentPath is the path to this scope (where we are in the namespace) */

    CurrentPath.Length = ACPI_ALLOCATE_LOCAL_BUFFER;
    Status = AcpiNsHandleToPathname (CurrentNode, &CurrentPath);
    if (ACPI_FAILURE (Status))
    {
        AslCoreSubsystemError (Op, Status, "Getting Current NamePath",
            ASL_NO_ABORT);
        return_VOID;
    }
    CurrentPath.Length--;   /* Subtract one for null terminator */

    /* Debug output only */

    Status = AcpiNsExternalizeName (ACPI_UINT32_MAX, AmlNameString,
                NULL, &ExternalNameString);
    if (ACPI_FAILURE (Status))
    {
        AslCoreSubsystemError (Op, Status, "Externalizing NamePath",
            ASL_NO_ABORT);
        return_VOID;
    }

    ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS,
        "%37s (%2u) ==> %-32s(%2u) %-32s",
        (char *) CurrentPath.Pointer, (UINT32) CurrentPath.Length,
        (char *) TargetPath.Pointer, (UINT32) TargetPath.Length, ExternalNameString));

    ACPI_FREE (ExternalNameString);

    /*
     * Attempt an optmization depending on the type of namepath
     */
    if (Flags & (AML_NAMED | AML_CREATE))
    {
        /*
         * This is a named opcode and the namepath is a name declaration, not
         * a reference.
         */
        Status = OptOptimizeNameDeclaration (Op, WalkState, CurrentNode,
                    TargetNode, AmlNameString, &NewPath);
        if (ACPI_FAILURE (Status))
        {
            /*
             * 2) now attempt to
             *    optimize the namestring with carats (up-arrow)
             */
            Status = OptBuildShortestPath (Op, WalkState, CurrentNode,
                            TargetNode, &CurrentPath, &TargetPath,
                            AmlNameStringLength, 1, &NewPath);
        }
    }
    else
    {
        /*
         * This is a reference to an existing named object
         *
         * 1) Check if search-to-root can be utilized using the last
         *    NameSeg of the NamePath
         */
        Status = OptSearchToRoot (Op, WalkState, CurrentNode,

void
AcpiDsDeleteWalkState (
    ACPI_WALK_STATE         *WalkState)
{
    ACPI_GENERIC_STATE      *State;


    ACPI_FUNCTION_TRACE_PTR (DsDeleteWalkState, WalkState);


    if (!WalkState)
    {
        return_VOID;
    }

    if (WalkState->DescriptorType != ACPI_DESC_TYPE_WALK)
    {
        ACPI_ERROR ((AE_INFO, "%p is not a valid walk state",
            WalkState));
        return_VOID;
    }

    /* There should not be any open scopes */

    if (WalkState->ParserState.Scope)
    {
        ACPI_ERROR ((AE_INFO, "%p walk still has a scope list",
            WalkState));
        AcpiPsCleanupScope (&WalkState->ParserState);
    }

    /* Always must free any linked control states */

    while (WalkState->ControlState)
    {
        State = WalkState->ControlState;
        WalkState->ControlState = State->Common.Next;

        AcpiUtDeleteGenericState (State);
    }

    /* Always must free any linked parse states */

    while (WalkState->ScopeInfo)
    {
        State = WalkState->ScopeInfo;
        WalkState->ScopeInfo = State->Common.Next;

        AcpiUtDeleteGenericState (State);
    }

    /* Always must free any stacked result states */

    while (WalkState->Results)
    {
        State = WalkState->Results;
        WalkState->Results = State->Common.Next;

        AcpiUtDeleteGenericState (State);
    }

    ACPI_FREE (WalkState);
    return_VOID;
}

static ACPI_STATUS
OptOptimizeNameDeclaration (
    ACPI_PARSE_OBJECT       *Op,
    ACPI_WALK_STATE         *WalkState,
    ACPI_NAMESPACE_NODE     *CurrentNode,
    ACPI_NAMESPACE_NODE     *TargetNode,
    char                    *AmlNameString,
    char                    **NewPath)
{
    ACPI_STATUS             Status;
    char                    *NewPathExternal;
    ACPI_GENERIC_STATE      ScopeInfo;
    ACPI_NAMESPACE_NODE     *Node;


    ACPI_FUNCTION_TRACE (OptOptimizeNameDeclaration);


    if (((CurrentNode == AcpiGbl_RootNode) ||
        (Op->Common.Parent->Asl.ParseOpcode == PARSEOP_DEFINITIONBLOCK)) &&
            (AmlNameString[0] == '\\'))
    {
        /*
         * The current scope is the root, and the namepath has a root prefix
         * that is therefore extraneous.  Remove it.
         */
        *NewPath = &AmlNameString[1];

        /* Debug output */

        Status = AcpiNsExternalizeName (ACPI_UINT32_MAX, *NewPath,
                    NULL, &NewPathExternal);
        if (ACPI_FAILURE (Status))
        {
            AslCoreSubsystemError (Op, Status, "Externalizing NamePath",
                ASL_NO_ABORT);
            return (Status);
        }

        /*
         * Check to make sure that the optimization finds the node we are
         * looking for.  This is simply a sanity check on the new
         * path that has been created.
         */
        ScopeInfo.Scope.Node = CurrentNode;
        Status = AcpiNsLookup (&ScopeInfo, *NewPath,
                        ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
                        ACPI_NS_DONT_OPEN_SCOPE, WalkState, &(Node));
        if (ACPI_SUCCESS (Status))
        {
            /* Found the namepath, but make sure the node is correct */

            if (Node == TargetNode)
            {
                /* The lookup matched the node, accept this optimization */

                AslError (ASL_OPTIMIZATION, ASL_MSG_NAME_OPTIMIZATION,
                    Op, NewPathExternal);

                ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS,
                    "AT ROOT:   %-24s", NewPathExternal));
            }
            else
            {
                /* Node is not correct, do not use this optimization */

                Status = AE_NOT_FOUND;
                ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS,
                    " ***** WRONG NODE"));
                AslError (ASL_WARNING, ASL_MSG_COMPILER_INTERNAL, Op,
                    "Not using optimized name - found wrong node");
            }
        }
        else
        {
            /* The lookup failed, we obviously cannot use this optimization */

            ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS,
                " ***** NOT FOUND"));
            AslError (ASL_WARNING, ASL_MSG_COMPILER_INTERNAL, Op,
                "Not using optimized name - did not find node");
        }

        ACPI_FREE (NewPathExternal);
        return (Status);
    }

    /* Could not optimize */

    return (AE_NOT_FOUND);
}

//.........这里部分代码省略.........
     * target string
     */
    Index = (NumCommonSegments * ACPI_PATH_SEGMENT_LENGTH) + 1;

    /* Special handling for exact subpath in a name declaration */

    if (IsDeclaration && SubPath && (CurrentPath->Length > TargetPath->Length))
    {
        /*
         * The current path is longer than the target, and the target is a
         * subpath of the current path. We must include one more NameSeg of
         * the target path
         */
        Index -= ACPI_PATH_SEGMENT_LENGTH;

        /* Special handling for Scope() operator */

        if (Op->Asl.AmlOpcode == AML_SCOPE_OP)
        {
            NewPathExternal[i] = '^';
            i++;
            ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS, "(EXTRA ^)"));
        }
    }

    /* Make sure we haven't gone off the end of the target path */

    if (Index > TargetPath->Length)
    {
        Index = TargetPath->Length;
    }

    ACPI_STRCPY (&NewPathExternal[i], &((char *) TargetPath->Pointer)[Index]);
    ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS, " %-24s", NewPathExternal));

    /*
     * Internalize the new target string and check it against the original
     * string to make sure that this is in fact an optimization. If the
     * original string is already optimal, there is no point in continuing.
     */
    Status = AcpiNsInternalizeName (NewPathExternal, &NewPath);
    if (ACPI_FAILURE (Status))
    {
        AslCoreSubsystemError (Op, Status, "Internalizing new NamePath",
            ASL_NO_ABORT);
        ACPI_FREE (NewPathExternal);
        return (Status);
    }

    if (ACPI_STRLEN (NewPath) >= AmlNameStringLength)
    {
        ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS,
            " NOT SHORTER (New %u old %u)",
            (UINT32) ACPI_STRLEN (NewPath), (UINT32) AmlNameStringLength));
        ACPI_FREE (NewPathExternal);
        return (AE_NOT_FOUND);
    }

    /*
     * Check to make sure that the optimization finds the node we are
     * looking for.  This is simply a sanity check on the new
     * path that has been created.
     */
    Status = AcpiNsLookup (&ScopeInfo,  NewPath,
                    ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
                    ACPI_NS_DONT_OPEN_SCOPE, WalkState, &(Node));
    if (ACPI_SUCCESS (Status))
    {
        /* Found the namepath, but make sure the node is correct */

        if (Node == TargetNode)
        {
            /* The lookup matched the node, accept this optimization */

            AslError (ASL_OPTIMIZATION, ASL_MSG_NAME_OPTIMIZATION,
                Op, NewPathExternal);
            *ReturnNewPath = NewPath;
        }
        else
        {
            /* Node is not correct, do not use this optimization */

            Status = AE_NOT_FOUND;
            ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS, " ***** WRONG NODE"));
            AslError (ASL_WARNING, ASL_MSG_COMPILER_INTERNAL, Op,
                "Not using optimized name - found wrong node");
        }
    }
    else
    {
        /* The lookup failed, we obviously cannot use this optimization */

        ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS, " ***** NOT FOUND"));
        AslError (ASL_WARNING, ASL_MSG_COMPILER_INTERNAL, Op,
            "Not using optimized name - did not find node");
    }

    ACPI_FREE (NewPathExternal);
    return (Status);
}

void
AdCreateTableHeader (
    char                    *Filename,
    ACPI_TABLE_HEADER       *Table)
{
    char                    *NewFilename;
    UINT8                   Checksum;


    /*
     * Print file header and dump original table header
     */
    AdDisassemblerHeader (Filename);

    AcpiOsPrintf (" *\n * Original Table Header:\n");
    AcpiOsPrintf (" *     Signature        \"%4.4s\"\n",    Table->Signature);
    AcpiOsPrintf (" *     Length           0x%8.8X (%u)\n", Table->Length, Table->Length);

    /* Print and validate the revision */

    AcpiOsPrintf (" *     Revision         0x%2.2X",      Table->Revision);

    switch (Table->Revision)
    {
    case 0:
        AcpiOsPrintf (" **** Invalid Revision");
        break;

    case 1:
        /* Revision of DSDT controls the ACPI integer width */

        if (ACPI_COMPARE_NAME (Table->Signature, ACPI_SIG_DSDT))
        {
            AcpiOsPrintf (" **** ACPI 1.0, no 64-bit math support");
        }
        break;

    default:
        break;
    }
    AcpiOsPrintf ("\n");

    /* Print and validate the table checksum */

    AcpiOsPrintf (" *     Checksum         0x%2.2X",        Table->Checksum);

    Checksum = AcpiTbChecksum (ACPI_CAST_PTR (UINT8, Table), Table->Length);
    if (Checksum)
    {
        AcpiOsPrintf (" **** Incorrect checksum, should be 0x%2.2X",
            (UINT8) (Table->Checksum - Checksum));
    }
    AcpiOsPrintf ("\n");

    AcpiOsPrintf (" *     OEM ID           \"%.6s\"\n",     Table->OemId);
    AcpiOsPrintf (" *     OEM Table ID     \"%.8s\"\n",     Table->OemTableId);
    AcpiOsPrintf (" *     OEM Revision     0x%8.8X (%u)\n", Table->OemRevision, Table->OemRevision);
    AcpiOsPrintf (" *     Compiler ID      \"%.4s\"\n",     Table->AslCompilerId);
    AcpiOsPrintf (" *     Compiler Version 0x%8.8X (%u)\n", Table->AslCompilerRevision, Table->AslCompilerRevision);
    AcpiOsPrintf (" */\n");

    /* Create AML output filename based on input filename */

    if (Filename)
    {
        NewFilename = FlGenerateFilename (Filename, "aml");
    }
    else
    {
        NewFilename = ACPI_ALLOCATE_ZEROED (9);
        strncat (NewFilename, Table->Signature, 4);
        strcat (NewFilename, ".aml");
    }

    /* Open the ASL definition block */

    AcpiOsPrintf (
        "DefinitionBlock (\"%s\", \"%4.4s\", %hd, \"%.6s\", \"%.8s\", 0x%8.8X)\n",
        NewFilename, Table->Signature, Table->Revision,
        Table->OemId, Table->OemTableId, Table->OemRevision);

    ACPI_FREE (NewFilename);
}

//.........这里部分代码省略.........
        switch (Op->Asl.AmlOpcode)
        {
        case AML_SCOPE_OP:
        case AML_ALIAS_OP:

            /* These opcodes do not declare a new object, ignore them */

            break;

        default:

            /* All other named object opcodes come here */

            switch (FileId)
            {
            case ASL_FILE_ASM_SOURCE_OUTPUT:
            case ASL_FILE_C_SOURCE_OUTPUT:
            case ASL_FILE_ASM_INCLUDE_OUTPUT:
            case ASL_FILE_C_INCLUDE_OUTPUT:
                /*
                 * For named objects, we will create a valid symbol so that the
                 * AML code can be referenced from C or ASM
                 */
                if (Op->Asl.ExternalName)
                {
                    /* Get the full pathname associated with this node */

                    Pathname = AcpiNsGetExternalPathname (Op->Asl.Node);
                    Length = strlen (Pathname);
                    if (Length >= 4)
                    {
                        /* Convert all dots in the path to underscores */

                        for (i = 0; i < Length; i++)
                        {
                            if (Pathname[i] == '.')
                            {
                                Pathname[i] = '_';
                            }
                        }

                        /* Create the appropriate symbol in the output file */

                        if (FileId == ASL_FILE_ASM_SOURCE_OUTPUT)
                        {
                            FlPrintFile (FileId,
                                "%s_%s_%s  \\\n",
                                Gbl_TableSignature, Gbl_TableId, &Pathname[1]);
                        }
                        if (FileId == ASL_FILE_C_SOURCE_OUTPUT)
                        {
                            FlPrintFile (FileId,
                                "    unsigned char    %s_%s_%s [] =\n    {\n",
                                Gbl_TableSignature, Gbl_TableId, &Pathname[1]);
                        }
                        if (FileId == ASL_FILE_ASM_INCLUDE_OUTPUT)
                        {
                            FlPrintFile (FileId,
                                "extrn %s_%s_%s : byte\n",
                                Gbl_TableSignature, Gbl_TableId, &Pathname[1]);
                        }
                        if (FileId == ASL_FILE_C_INCLUDE_OUTPUT)
                        {
                            FlPrintFile (FileId,
                                "extern unsigned char    %s_%s_%s [];\n",
                                Gbl_TableSignature, Gbl_TableId, &Pathname[1]);
                        }
                    }
                    ACPI_FREE (Pathname);
                }
                break;

            default:

                /* Nothing to do for listing file */

                break;
            }
        }
        break;

    case AML_CLASS_EXECUTE:
    case AML_CLASS_CREATE:
    default:

        if ((Op->Asl.ParseOpcode == PARSEOP_BUFFER) &&
            (Op->Asl.CompileFlags & NODE_IS_RESOURCE_DESC))
        {
            return;
        }

        LsWriteSourceLines (Op->Asl.LineNumber, Op->Asl.LogicalLineNumber,
            FileId);
        break;

    case AML_CLASS_UNKNOWN:

        break;
    }
}

static ACPI_STATUS
MpNamespaceXrefBegin (
    ACPI_PARSE_OBJECT       *Op,
    UINT32                  Level,
    void                    *Context)
{
    ACPI_GPIO_INFO          *Info = ACPI_CAST_PTR (ACPI_GPIO_INFO, Context);
    const ACPI_OPCODE_INFO  *OpInfo;
    char                    *DevicePathname;
    ACPI_PARSE_OBJECT       *ParentOp;
    char                    *HidString;


    ACPI_FUNCTION_TRACE_PTR (MpNamespaceXrefBegin, Op);

    /*
     * If this node is the actual declaration of a name
     * [such as the XXXX name in "Method (XXXX)"],
     * we are not interested in it here. We only care about names that
     * are references to other objects within the namespace and the
     * parent objects of name declarations
     */
    if (Op->Asl.CompileFlags & NODE_IS_NAME_DECLARATION)
    {
        return (AE_OK);
    }

    /* We are only interested in opcodes that have an associated name */

    OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode);

    if ((OpInfo->Flags & AML_NAMED) ||
        (OpInfo->Flags & AML_CREATE))
    {
        return (AE_OK);
    }

    if ((Op->Asl.ParseOpcode != PARSEOP_NAMESTRING) &&
        (Op->Asl.ParseOpcode != PARSEOP_NAMESEG)    &&
        (Op->Asl.ParseOpcode != PARSEOP_METHODCALL))
    {
        return (AE_OK);
    }

    if (!Op->Asl.Node)
    {
        return (AE_OK);
    }

    ParentOp = Op->Asl.Parent;
    if (ParentOp->Asl.ParseOpcode == PARSEOP_FIELD)
    {
        return (AE_OK);
    }

    if (Op->Asl.Node == Info->TargetNode)
    {
        while (ParentOp && (!ParentOp->Asl.Node))
        {
            ParentOp = ParentOp->Asl.Parent;
        }

        if (ParentOp)
        {
            DevicePathname = AcpiNsGetExternalPathname (
                ParentOp->Asl.Node);

            if (!Info->References)
            {
                FlPrintFile (ASL_FILE_MAP_OUTPUT, "  // References:");
            }

            HidString = MpGetHidViaNamestring (DevicePathname);

            FlPrintFile (ASL_FILE_MAP_OUTPUT, " %s [%s]",
                DevicePathname, HidString);

            Info->References++;

            ACPI_FREE (DevicePathname);
        }
    }

    return (AE_OK);
}

/*******************************************************************************
 *
 * FUNCTION:    ns_execute_table
 *
 * PARAMETERS:  table_desc      - An ACPI table descriptor for table to parse
 *              start_node      - Where to enter the table into the namespace
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Load ACPI/AML table by executing the entire table as a
 *              term_list.
 *
 ******************************************************************************/
acpi_status
acpi_ns_execute_table(u32 table_index, struct acpi_namespace_node *start_node)
{
	acpi_status status;
	struct acpi_table_header *table;
	acpi_owner_id owner_id;
	struct acpi_evaluate_info *info = NULL;
	u32 aml_length;
	u8 *aml_start;
	union acpi_operand_object *method_obj = NULL;

	ACPI_FUNCTION_TRACE(ns_execute_table);

	status = acpi_get_table_by_index(table_index, &table);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Table must consist of at least a complete header */

	if (table->length < sizeof(struct acpi_table_header)) {
		return_ACPI_STATUS(AE_BAD_HEADER);
	}

	aml_start = (u8 *)table + sizeof(struct acpi_table_header);
	aml_length = table->length - sizeof(struct acpi_table_header);

	status = acpi_tb_get_owner_id(table_index, &owner_id);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Create, initialize, and link a new temporary method object */

	method_obj = acpi_ut_create_internal_object(ACPI_TYPE_METHOD);
	if (!method_obj) {
		return_ACPI_STATUS(AE_NO_MEMORY);
	}

	/* Allocate the evaluation information block */

	info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
	if (!info) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
			  "Create table code block: %p\n", method_obj));

	method_obj->method.aml_start = aml_start;
	method_obj->method.aml_length = aml_length;
	method_obj->method.owner_id = owner_id;
	method_obj->method.info_flags |= ACPI_METHOD_MODULE_LEVEL;

	info->pass_number = ACPI_IMODE_EXECUTE;
	info->node = start_node;
	info->obj_desc = method_obj;
	info->node_flags = info->node->flags;
	info->full_pathname = acpi_ns_get_normalized_pathname(info->node, TRUE);
	if (!info->full_pathname) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	status = acpi_ps_execute_table(info);

cleanup:
	if (info) {
		ACPI_FREE(info->full_pathname);
		info->full_pathname = NULL;
	}
	ACPI_FREE(info);
	acpi_ut_remove_reference(method_obj);
	return_ACPI_STATUS(status);
}