1 files changed, 398 insertions, 0 deletions
diff --git a/source/components/utilities/utstate.c b/source/components/utilities/utstate.c
new file mode 100644
index 0000000..62a1aef
--- /dev/null
+++ b/source/components/utilities/utstate.c
@@ -0,0 +1,398 @@
+/*******************************************************************************
+ *
+ * Module Name: utstate - state object support procedures
+ *
+ ******************************************************************************/
+
+/*
+ * 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 __UTSTATE_C__
+
+#include "acpi.h"
+#include "accommon.h"
+
+#define _COMPONENT          ACPI_UTILITIES
+        ACPI_MODULE_NAME    ("utstate")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiUtCreatePkgStateAndPush
+ *
+ * PARAMETERS:  Object          - Object to be added to the new state
+ *              Action          - Increment/Decrement
+ *              StateList       - List the state will be added to
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Create a new state and push it
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiUtCreatePkgStateAndPush (
+    void                    *InternalObject,
+    void                    *ExternalObject,
+    UINT16                  Index,
+    ACPI_GENERIC_STATE      **StateList)
+{
+    ACPI_GENERIC_STATE       *State;
+
+
+    ACPI_FUNCTION_ENTRY ();
+
+
+    State = AcpiUtCreatePkgState (InternalObject, ExternalObject, Index);
+    if (!State)
+    {
+        return (AE_NO_MEMORY);
+    }
+
+    AcpiUtPushGenericState (StateList, State);
+    return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiUtPushGenericState
+ *
+ * PARAMETERS:  ListHead            - Head of the state stack
+ *              State               - State object to push
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Push a state object onto a state stack
+ *
+ ******************************************************************************/
+
+void
+AcpiUtPushGenericState (
+    ACPI_GENERIC_STATE      **ListHead,
+    ACPI_GENERIC_STATE      *State)
+{
+    ACPI_FUNCTION_TRACE (UtPushGenericState);
+
+
+    /* Push the state object onto the front of the list (stack) */
+
+    State->Common.Next = *ListHead;
+    *ListHead = State;
+
+    return_VOID;
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiUtPopGenericState
+ *
+ * PARAMETERS:  ListHead            - Head of the state stack
+ *
+ * RETURN:      The popped state object
+ *
+ * DESCRIPTION: Pop a state object from a state stack
+ *
+ ******************************************************************************/
+
+ACPI_GENERIC_STATE *
+AcpiUtPopGenericState (
+    ACPI_GENERIC_STATE      **ListHead)
+{
+    ACPI_GENERIC_STATE      *State;
+
+
+    ACPI_FUNCTION_TRACE (UtPopGenericState);
+
+
+    /* Remove the state object at the head of the list (stack) */
+
+    State = *ListHead;
+    if (State)
+    {
+        /* Update the list head */
+
+        *ListHead = State->Common.Next;
+    }
+
+    return_PTR (State);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiUtCreateGenericState
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      The new state object. NULL on failure.
+ *
+ * DESCRIPTION: Create a generic state object.  Attempt to obtain one from
+ *              the global state cache;  If none available, create a new one.
+ *
+ ******************************************************************************/
+
+ACPI_GENERIC_STATE *
+AcpiUtCreateGenericState (
+    void)
+{
+    ACPI_GENERIC_STATE      *State;
+
+
+    ACPI_FUNCTION_ENTRY ();
+
+
+    State = AcpiOsAcquireObject (AcpiGbl_StateCache);
+    if (State)
+    {
+        /* Initialize */
+        State->Common.DescriptorType = ACPI_DESC_TYPE_STATE;
+    }
+
+    return (State);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiUtCreateThreadState
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      New Thread State. NULL on failure
+ *
+ * DESCRIPTION: Create a "Thread State" - a flavor of the generic state used
+ *              to track per-thread info during method execution
+ *
+ ******************************************************************************/
+
+ACPI_THREAD_STATE *
+AcpiUtCreateThreadState (
+    void)
+{
+    ACPI_GENERIC_STATE      *State;
+
+
+    ACPI_FUNCTION_TRACE (UtCreateThreadState);
+
+
+    /* Create the generic state object */
+
+    State = AcpiUtCreateGenericState ();
+    if (!State)
+    {
+        return_PTR (NULL);
+    }
+
+    /* Init fields specific to the update struct */
+
+    State->Common.DescriptorType = ACPI_DESC_TYPE_STATE_THREAD;
+    State->Thread.ThreadId = AcpiOsGetThreadId ();
+
+    /* Check for invalid thread ID - zero is very bad, it will break things */
+
+    if (!State->Thread.ThreadId)
+    {
+        ACPI_ERROR ((AE_INFO, "Invalid zero ID from AcpiOsGetThreadId"));
+        State->Thread.ThreadId = (ACPI_THREAD_ID) 1;
+    }
+
+    return_PTR ((ACPI_THREAD_STATE *) State);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiUtCreateUpdateState
+ *
+ * PARAMETERS:  Object          - Initial Object to be installed in the state
+ *              Action          - Update action to be performed
+ *
+ * RETURN:      New state object, null on failure
+ *
+ * DESCRIPTION: Create an "Update State" - a flavor of the generic state used
+ *              to update reference counts and delete complex objects such
+ *              as packages.
+ *
+ ******************************************************************************/
+
+ACPI_GENERIC_STATE *
+AcpiUtCreateUpdateState (
+    ACPI_OPERAND_OBJECT     *Object,
+    UINT16                  Action)
+{
+    ACPI_GENERIC_STATE      *State;
+
+
+    ACPI_FUNCTION_TRACE_PTR (UtCreateUpdateState, Object);
+
+
+    /* Create the generic state object */
+
+    State = AcpiUtCreateGenericState ();
+    if (!State)
+    {
+        return_PTR (NULL);
+    }
+
+    /* Init fields specific to the update struct */
+
+    State->Common.DescriptorType = ACPI_DESC_TYPE_STATE_UPDATE;
+    State->Update.Object = Object;
+    State->Update.Value = Action;
+
+    return_PTR (State);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiUtCreatePkgState
+ *
+ * PARAMETERS:  Object          - Initial Object to be installed in the state
+ *              Action          - Update action to be performed
+ *
+ * RETURN:      New state object, null on failure
+ *
+ * DESCRIPTION: Create a "Package State"
+ *
+ ******************************************************************************/
+
+ACPI_GENERIC_STATE *
+AcpiUtCreatePkgState (
+    void                    *InternalObject,
+    void                    *ExternalObject,
+    UINT16                  Index)
+{
+    ACPI_GENERIC_STATE      *State;
+
+
+    ACPI_FUNCTION_TRACE_PTR (UtCreatePkgState, InternalObject);
+
+
+    /* Create the generic state object */
+
+    State = AcpiUtCreateGenericState ();
+    if (!State)
+    {
+        return_PTR (NULL);
+    }
+
+    /* Init fields specific to the update struct */
+
+    State->Common.DescriptorType = ACPI_DESC_TYPE_STATE_PACKAGE;
+    State->Pkg.SourceObject = (ACPI_OPERAND_OBJECT *) InternalObject;
+    State->Pkg.DestObject = ExternalObject;
+    State->Pkg.Index= Index;
+    State->Pkg.NumPackages = 1;
+
+    return_PTR (State);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiUtCreateControlState
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      New state object, null on failure
+ *
+ * DESCRIPTION: Create a "Control State" - a flavor of the generic state used
+ *              to support nested IF/WHILE constructs in the AML.
+ *
+ ******************************************************************************/
+
+ACPI_GENERIC_STATE *
+AcpiUtCreateControlState (
+    void)
+{
+    ACPI_GENERIC_STATE      *State;
+
+
+    ACPI_FUNCTION_TRACE (UtCreateControlState);
+
+
+    /* Create the generic state object */
+
+    State = AcpiUtCreateGenericState ();
+    if (!State)
+    {
+        return_PTR (NULL);
+    }
+
+    /* Init fields specific to the control struct */
+
+    State->Common.DescriptorType = ACPI_DESC_TYPE_STATE_CONTROL;
+    State->Common.State = ACPI_CONTROL_CONDITIONAL_EXECUTING;
+
+    return_PTR (State);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiUtDeleteGenericState
+ *
+ * PARAMETERS:  State               - The state object to be deleted
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Release a state object to the state cache. NULL state objects
+ *              are ignored.
+ *
+ ******************************************************************************/
+
+void
+AcpiUtDeleteGenericState (
+    ACPI_GENERIC_STATE      *State)
+{
+    ACPI_FUNCTION_TRACE (UtDeleteGenericState);
+
+
+    /* Ignore null state */
+
+    if (State)
+    {
+        (void) AcpiOsReleaseObject (AcpiGbl_StateCache, State);
+    }
+    return_VOID;
+}
+
+