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diff --git a/source/compiler/dtsubtable.c b/source/compiler/dtsubtable.c
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+/******************************************************************************
+ *
+ * Module Name: dtsubtable.c - handling of subtables within ACPI tables
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2012, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * substantially similar to the "NO WARRANTY" disclaimer below
+ * ("Disclaimer") and any redistribution must be conditioned upon
+ * including a substantially similar Disclaimer requirement for further
+ * binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ * of any contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#define __DTSUBTABLE_C__
+
+#include "aslcompiler.h"
+#include "dtcompiler.h"
+
+#define _COMPONENT DT_COMPILER
+ ACPI_MODULE_NAME ("dtsubtable")
+
+
+/******************************************************************************
+ *
+ * FUNCTION: DtCreateSubtable
+ *
+ * PARAMETERS: Buffer - Input buffer
+ * Length - Buffer length
+ * RetSubtable - Returned newly created subtable
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Create a subtable that is not listed with ACPI_DMTABLE_INFO
+ * For example, FACS has 24 bytes reserved at the end
+ * and it's not listed at AcpiDmTableInfoFacs
+ *
+ *****************************************************************************/
+
+void
+DtCreateSubtable (
+ UINT8 *Buffer,
+ UINT32 Length,
+ DT_SUBTABLE **RetSubtable)
+{
+ DT_SUBTABLE *Subtable;
+
+
+ Subtable = UtLocalCalloc (sizeof (DT_SUBTABLE));
+
+ /* Create a new buffer for the subtable data */
+
+ Subtable->Buffer = UtLocalCalloc (Length);
+ ACPI_MEMCPY (Subtable->Buffer, Buffer, Length);
+
+ Subtable->Length = Length;
+ Subtable->TotalLength = Length;
+
+ *RetSubtable = Subtable;
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION: DtInsertSubtable
+ *
+ * PARAMETERS: ParentTable - The Parent of the new subtable
+ * Subtable - The new subtable to insert
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Insert the new subtable to the parent table
+ *
+ *****************************************************************************/
+
+void
+DtInsertSubtable (
+ DT_SUBTABLE *ParentTable,
+ DT_SUBTABLE *Subtable)
+{
+ DT_SUBTABLE *ChildTable;
+
+
+ Subtable->Peer = NULL;
+ Subtable->Parent = ParentTable;
+
+ /* Link the new entry into the child list */
+
+ if (!ParentTable->Child)
+ {
+ ParentTable->Child = Subtable;
+ }
+ else
+ {
+ /* Walk to the end of the child list */
+
+ ChildTable = ParentTable->Child;
+ while (ChildTable->Peer)
+ {
+ ChildTable = ChildTable->Peer;
+ }
+
+ /* Add new subtable at the end of the child list */
+
+ ChildTable->Peer = Subtable;
+ }
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION: DtPushSubtable
+ *
+ * PARAMETERS: Subtable - Subtable to push
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Push a subtable onto a subtable stack
+ *
+ *****************************************************************************/
+
+void
+DtPushSubtable (
+ DT_SUBTABLE *Subtable)
+{
+
+ Subtable->StackTop = Gbl_SubtableStack;
+ Gbl_SubtableStack = Subtable;
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION: DtPopSubtable
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Pop a subtable from a subtable stack. Uses global SubtableStack
+ *
+ *****************************************************************************/
+
+void
+DtPopSubtable (
+ void)
+{
+ DT_SUBTABLE *Subtable;
+
+
+ Subtable = Gbl_SubtableStack;
+
+ if (Subtable)
+ {
+ Gbl_SubtableStack = Subtable->StackTop;
+ }
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION: DtPeekSubtable
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: The subtable on top of stack
+ *
+ * DESCRIPTION: Get the subtable on top of stack
+ *
+ *****************************************************************************/
+
+DT_SUBTABLE *
+DtPeekSubtable (
+ void)
+{
+
+ return (Gbl_SubtableStack);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION: DtGetNextSubtable
+ *
+ * PARAMETERS: ParentTable - Parent table whose children we are
+ * getting
+ * ChildTable - Previous child that was found.
+ * The NEXT child will be returned
+ *
+ * RETURN: Pointer to the NEXT child or NULL if none is found.
+ *
+ * DESCRIPTION: Return the next peer subtable within the tree.
+ *
+ *****************************************************************************/
+
+DT_SUBTABLE *
+DtGetNextSubtable (
+ DT_SUBTABLE *ParentTable,
+ DT_SUBTABLE *ChildTable)
+{
+ ACPI_FUNCTION_ENTRY ();
+
+
+ if (!ChildTable)
+ {
+ /* It's really the parent's _scope_ that we want */
+
+ return (ParentTable->Child);
+ }
+
+ /* Otherwise just return the next peer (NULL if at end-of-list) */
+
+ return (ChildTable->Peer);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION: DtGetParentSubtable
+ *
+ * PARAMETERS: Subtable - Current subtable
+ *
+ * RETURN: Parent of the given subtable
+ *
+ * DESCRIPTION: Get the parent of the given subtable in the tree
+ *
+ *****************************************************************************/
+
+DT_SUBTABLE *
+DtGetParentSubtable (
+ DT_SUBTABLE *Subtable)
+{
+
+ if (!Subtable)
+ {
+ return (NULL);
+ }
+
+ return (Subtable->Parent);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION: DtGetSubtableLength
+ *
+ * PARAMETERS: Field - Current field list pointer
+ * Info - Data table info
+ *
+ * RETURN: Subtable length
+ *
+ * DESCRIPTION: Get length of bytes needed to compile the subtable
+ *
+ *****************************************************************************/
+
+UINT32
+DtGetSubtableLength (
+ DT_FIELD *Field,
+ ACPI_DMTABLE_INFO *Info)
+{
+ UINT32 ByteLength = 0;
+ UINT8 Step;
+ UINT8 i;
+
+
+ /* Walk entire Info table; Null name terminates */
+
+ for (; Info->Name; Info++)
+ {
+ if (Info->Opcode == ACPI_DMT_EXTRA_TEXT)
+ {
+ continue;
+ }
+
+ if (!Field)
+ {
+ goto Error;
+ }
+
+ ByteLength += DtGetFieldLength (Field, Info);
+
+ switch (Info->Opcode)
+ {
+ case ACPI_DMT_GAS:
+ Step = 5;
+ break;
+
+ case ACPI_DMT_HESTNTFY:
+ Step = 9;
+ break;
+
+ default:
+ Step = 1;
+ break;
+ }
+
+ for (i = 0; i < Step; i++)
+ {
+ if (!Field)
+ {
+ goto Error;
+ }
+
+ Field = Field->Next;
+ }
+ }
+
+ return (ByteLength);
+
+Error:
+ if (!Field)
+ {
+ sprintf (MsgBuffer, "Found NULL field - Field name \"%s\" needed",
+ Info->Name);
+ DtFatal (ASL_MSG_COMPILER_INTERNAL, NULL, MsgBuffer);
+ }
+
+ return (ASL_EOF);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION: DtSetSubtableLength
+ *
+ * PARAMETERS: Subtable - Subtable
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Set length of the subtable into its length field
+ *
+ *****************************************************************************/
+
+void
+DtSetSubtableLength (
+ DT_SUBTABLE *Subtable)
+{
+
+ if (!Subtable->LengthField)
+ {
+ return;
+ }
+
+ ACPI_MEMCPY (Subtable->LengthField, &Subtable->TotalLength,
+ Subtable->SizeOfLengthField);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-04 00:45:17 +0000