acpica-unix2-20130823
PANKOVs restructure

@@ -1,14 +1,13 @@
-
 /******************************************************************************
  *
  * Module Name: exutils - interpreter/scanner utilities
  *
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2013, 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:

@@ -119,11 +118,11 @@
  *
  * RETURN:      None
  *
  * DESCRIPTION: Reacquire the interpreter execution region from within the
  *              interpreter code. Failure to enter the interpreter region is a
- *              fatal system error. Used in  conjuction with
+ *              fatal system error. Used in conjunction with
  *              RelinquishInterpreter
  *
  ******************************************************************************/
 
 void

@@ -228,44 +227,48 @@
  *
  * FUNCTION:    AcpiExTruncateFor32bitTable
  *
  * PARAMETERS:  ObjDesc         - Object to be truncated
  *
- * RETURN:      none
+ * RETURN:      TRUE if a truncation was performed, FALSE otherwise.
  *
  * DESCRIPTION: Truncate an ACPI Integer to 32 bits if the execution mode is
  *              32-bit, as determined by the revision of the DSDT.
  *
  ******************************************************************************/
 
-void
+BOOLEAN
 AcpiExTruncateFor32bitTable (
     ACPI_OPERAND_OBJECT     *ObjDesc)
 {
 
     ACPI_FUNCTION_ENTRY ();
 
 
     /*
      * Object must be a valid number and we must be executing
-     * a control method. NS node could be there for AML_INT_NAMEPATH_OP.
+     * a control method. Object could be NS node for AML_INT_NAMEPATH_OP.
      */
     if ((!ObjDesc) ||
         (ACPI_GET_DESCRIPTOR_TYPE (ObjDesc) != ACPI_DESC_TYPE_OPERAND) ||
         (ObjDesc->Common.Type != ACPI_TYPE_INTEGER))
     {
-        return;
+        return (FALSE);
     }
 
-    if (AcpiGbl_IntegerByteWidth == 4)
+    if ((AcpiGbl_IntegerByteWidth == 4) &&
+        (ObjDesc->Integer.Value > (UINT64) ACPI_UINT32_MAX))
     {
         /*
-         * We are running a method that exists in a 32-bit ACPI table.
+         * We are executing in a 32-bit ACPI table.
          * Truncate the value to 32 bits by zeroing out the upper 32-bit field
          */
         ObjDesc->Integer.Value &= (UINT64) ACPI_UINT32_MAX;
+        return (TRUE);
     }
+
+    return (FALSE);
 }
 
 
 /*******************************************************************************
  *

@@ -497,6 +500,36 @@
         (void) AcpiUtShortDivide (Value, 10, &Value, &Remainder);
         OutString[Count-1] = (char) ('0' + Remainder);\
     }
 }
 
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiIsValidSpaceId
+ *
+ * PARAMETERS:  SpaceId             - ID to be validated
+ *
+ * RETURN:      TRUE if valid/supported ID.
+ *
+ * DESCRIPTION: Validate an operation region SpaceID.
+ *
+ ******************************************************************************/
+
+BOOLEAN
+AcpiIsValidSpaceId (
+    UINT8                   SpaceId)
+{
+
+    if ((SpaceId >= ACPI_NUM_PREDEFINED_REGIONS) &&
+        (SpaceId < ACPI_USER_REGION_BEGIN) &&
+        (SpaceId != ACPI_ADR_SPACE_DATA_TABLE) &&
+        (SpaceId != ACPI_ADR_SPACE_FIXED_HARDWARE))
+    {
+        return (FALSE);
+    }
+
+    return (TRUE);
+}
+
+
 #endif