Import ACPICA 20120215.vendor/acpica/20120215

5 files changed, 3448 insertions, 0 deletions

diff --git a/source/os_specific/service_layers/osunixdir.c b/source/os_specific/service_layers/osunixdir.c
new file mode 100644
index 000000000000..20b153c3d485
--- /dev/null
+++ b/source/os_specific/service_layers/osunixdir.c
@@ -0,0 +1,251 @@
+
+/******************************************************************************
+ *
+ * Module Name: osunixdir - Unix directory access interfaces
+ *
+ *****************************************************************************/
+
+/*
+ * 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.
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <dirent.h>
+#include <fnmatch.h>
+#include <ctype.h>
+#include <sys/stat.h>
+
+#include "acpisrc.h"
+
+/*
+ * Allocated structure returned from OsOpenDirectory
+ */
+typedef struct ExternalFindInfo
+{
+    char                        *DirPathname;
+    DIR                         *DirPtr;
+    char                        temp_buffer[128];
+    char                        *WildcardSpec;
+    char                        RequestedFileType;
+
+} EXTERNAL_FIND_INFO;
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiOsOpenDirectory
+ *
+ * PARAMETERS:  DirPathname         - Full pathname to the directory
+ *              WildcardSpec        - string of the form "*.c", etc.
+ *
+ * RETURN:      A directory "handle" to be used in subsequent search operations.
+ *              NULL returned on failure.
+ *
+ * DESCRIPTION: Open a directory in preparation for a wildcard search
+ *
+ ******************************************************************************/
+
+void *
+AcpiOsOpenDirectory (
+    char                    *DirPathname,
+    char                    *WildcardSpec,
+    char                    RequestedFileType)
+{
+    EXTERNAL_FIND_INFO      *ExternalInfo;
+    DIR                     *dir;
+
+
+    /* Allocate the info struct that will be returned to the caller */
+
+    ExternalInfo = calloc (sizeof (EXTERNAL_FIND_INFO), 1);
+    if (!ExternalInfo)
+    {
+        return (NULL);
+    }
+
+    /* Get the directory stream */
+
+    dir = opendir (DirPathname);
+    if (!dir)
+    {
+        free (ExternalInfo);
+        return (NULL);
+    }
+
+    /* Save the info in the return structure */
+
+    ExternalInfo->WildcardSpec = WildcardSpec;
+    ExternalInfo->RequestedFileType = RequestedFileType;
+    ExternalInfo->DirPathname = DirPathname;
+    ExternalInfo->DirPtr = dir;
+    return (ExternalInfo);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiOsGetNextFilename
+ *
+ * PARAMETERS:  DirHandle           - Created via AcpiOsOpenDirectory
+ *
+ * RETURN:      Next filename matched. NULL if no more matches.
+ *
+ * DESCRIPTION: Get the next file in the directory that matches the wildcard
+ *              specification.
+ *
+ ******************************************************************************/
+
+char *
+AcpiOsGetNextFilename (
+    void                    *DirHandle)
+{
+    EXTERNAL_FIND_INFO      *ExternalInfo = DirHandle;
+    struct dirent           *dir_entry;
+    char                    *temp_str;
+    int                     str_len;
+    struct stat             temp_stat;
+    int                     err;
+
+
+    while ((dir_entry = readdir (ExternalInfo->DirPtr)))
+    {
+        if (!fnmatch (ExternalInfo->WildcardSpec, dir_entry->d_name, 0))
+        {
+            if (dir_entry->d_name[0] == '.')
+            {
+                continue;
+            }
+
+            str_len = strlen (dir_entry->d_name) +
+                        strlen (ExternalInfo->DirPathname) + 2;
+
+            temp_str = calloc (str_len, 1);
+            if (!temp_str)
+            {
+                printf ("Could not allocate buffer for temporary string\n");
+                return (NULL);
+            }
+
+            strcpy (temp_str, ExternalInfo->DirPathname);
+            strcat (temp_str, "/");
+            strcat (temp_str, dir_entry->d_name);
+
+            err = stat (temp_str, &temp_stat);
+            free (temp_str);
+            if (err == -1)
+            {
+                printf ("stat() error - should not happen\n");
+                return (NULL);
+            }
+
+            if ((S_ISDIR (temp_stat.st_mode)
+                && (ExternalInfo->RequestedFileType == REQUEST_DIR_ONLY))
+               ||
+               ((!S_ISDIR (temp_stat.st_mode)
+                && ExternalInfo->RequestedFileType == REQUEST_FILE_ONLY)))
+            {
+                /* copy to a temp buffer because dir_entry struct is on the stack */
+
+                strcpy (ExternalInfo->temp_buffer, dir_entry->d_name);
+                return (ExternalInfo->temp_buffer);
+            }
+        }
+    }
+
+    return (NULL);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiOsCloseDirectory
+ *
+ * PARAMETERS:  DirHandle           - Created via AcpiOsOpenDirectory
+ *
+ * RETURN:      None.
+ *
+ * DESCRIPTION: Close the open directory and cleanup.
+ *
+ ******************************************************************************/
+
+void
+AcpiOsCloseDirectory (
+    void                    *DirHandle)
+{
+    EXTERNAL_FIND_INFO      *ExternalInfo = DirHandle;
+
+
+    /* Close the directory and free allocations */
+
+    closedir (ExternalInfo->DirPtr);
+    free (DirHandle);
+}
+
+
+/* Other functions acpisrc uses but that aren't standard on Unix */
+
+/*******************************************************************************
+ *
+ * FUNCTION:    strlwr
+ *
+ * PARAMETERS:  str                 - String to be lowercased.
+ *
+ * RETURN:      str.
+ *
+ * DESCRIPTION: Lowercase a string in-place.
+ *
+ ******************************************************************************/
+
+char *
+strlwr  (
+   char         *str)
+{
+    int         length;
+    int         i;
+
+
+    length = strlen (str);
+
+    for (i = 0; i < length; i++)
+    {
+        str[i] = tolower ((int) str[i]);
+    }
+
+    return (str);
+}
diff --git a/source/os_specific/service_layers/osunixxf.c b/source/os_specific/service_layers/osunixxf.c
new file mode 100644
index 000000000000..a0899d208d2a
--- /dev/null
+++ b/source/os_specific/service_layers/osunixxf.c
@@ -0,0 +1,1243 @@
+/******************************************************************************
+ *
+ * Module Name: osunixxf - UNIX OSL interfaces
+ *
+ *****************************************************************************/
+
+/*
+ * 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.
+ */
+
+
+/*
+ * These interfaces are required in order to compile the ASL compiler and the
+ * various ACPICA tools under Linux or other Unix-like system.
+ *
+ * Note: Use #define __APPLE__ for OS X generation.
+ */
+#include "acpi.h"
+#include "accommon.h"
+#include "amlcode.h"
+#include "acparser.h"
+#include "acdebug.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <unistd.h>
+#include <sys/time.h>
+#include <semaphore.h>
+#include <pthread.h>
+#include <errno.h>
+
+#define _COMPONENT          ACPI_OS_SERVICES
+        ACPI_MODULE_NAME    ("osunixxf")
+
+
+extern FILE                    *AcpiGbl_DebugFile;
+FILE                           *AcpiGbl_OutputFile;
+
+
+/* Upcalls to AcpiExec */
+
+ACPI_PHYSICAL_ADDRESS
+AeLocalGetRootPointer (
+    void);
+
+void
+AeTableOverride (
+    ACPI_TABLE_HEADER       *ExistingTable,
+    ACPI_TABLE_HEADER       **NewTable);
+
+typedef void* (*PTHREAD_CALLBACK) (void *);
+
+/* Apple-specific */
+
+#ifdef __APPLE__
+#define sem_destroy         sem_close
+#endif
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsInitialize, AcpiOsTerminate
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Init and terminate. Nothing to do.
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsInitialize (
+    void)
+{
+
+    AcpiGbl_OutputFile = stdout;
+    return (AE_OK);
+}
+
+
+ACPI_STATUS
+AcpiOsTerminate (
+    void)
+{
+
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsGetRootPointer
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      RSDP physical address
+ *
+ * DESCRIPTION: Gets the ACPI root pointer (RSDP)
+ *
+ *****************************************************************************/
+
+ACPI_PHYSICAL_ADDRESS
+AcpiOsGetRootPointer (
+    void)
+{
+
+    return (AeLocalGetRootPointer ());
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsPredefinedOverride
+ *
+ * PARAMETERS:  InitVal             - Initial value of the predefined object
+ *              NewVal              - The new value for the object
+ *
+ * RETURN:      Status, pointer to value. Null pointer returned if not
+ *              overriding.
+ *
+ * DESCRIPTION: Allow the OS to override predefined names
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsPredefinedOverride (
+    const ACPI_PREDEFINED_NAMES *InitVal,
+    ACPI_STRING                 *NewVal)
+{
+
+    if (!InitVal || !NewVal)
+    {
+        return (AE_BAD_PARAMETER);
+    }
+
+    *NewVal = NULL;
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsTableOverride
+ *
+ * PARAMETERS:  ExistingTable       - Header of current table (probably
+ *                                    firmware)
+ *              NewTable            - Where an entire new table is returned.
+ *
+ * RETURN:      Status, pointer to new table. Null pointer returned if no
+ *              table is available to override
+ *
+ * DESCRIPTION: Return a different version of a table if one is available
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsTableOverride (
+    ACPI_TABLE_HEADER       *ExistingTable,
+    ACPI_TABLE_HEADER       **NewTable)
+{
+
+    if (!ExistingTable || !NewTable)
+    {
+        return (AE_BAD_PARAMETER);
+    }
+
+    *NewTable = NULL;
+
+#ifdef ACPI_EXEC_APP
+
+    AeTableOverride (ExistingTable, NewTable);
+    return (AE_OK);
+#else
+
+    return (AE_NO_ACPI_TABLES);
+#endif
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsPhysicalTableOverride
+ *
+ * PARAMETERS:  ExistingTable       - Header of current table (probably firmware)
+ *              NewAddress          - Where new table address is returned
+ *                                    (Physical address)
+ *              NewTableLength      - Where new table length is returned
+ *
+ * RETURN:      Status, address/length of new table. Null pointer returned
+ *              if no table is available to override.
+ *
+ * DESCRIPTION: Returns AE_SUPPORT, function not used in user space.
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsPhysicalTableOverride (
+    ACPI_TABLE_HEADER       *ExistingTable,
+    ACPI_PHYSICAL_ADDRESS   *NewAddress,
+    UINT32                  *NewTableLength)
+{
+
+    return (AE_SUPPORT);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsRedirectOutput
+ *
+ * PARAMETERS:  Destination         - An open file handle/pointer
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Causes redirect of AcpiOsPrintf and AcpiOsVprintf
+ *
+ *****************************************************************************/
+
+void
+AcpiOsRedirectOutput (
+    void                    *Destination)
+{
+
+    AcpiGbl_OutputFile = Destination;
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsPrintf
+ *
+ * PARAMETERS:  fmt, ...            - Standard printf format
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Formatted output
+ *
+ *****************************************************************************/
+
+void ACPI_INTERNAL_VAR_XFACE
+AcpiOsPrintf (
+    const char              *Fmt,
+    ...)
+{
+    va_list                 Args;
+
+
+    va_start (Args, Fmt);
+    AcpiOsVprintf (Fmt, Args);
+    va_end (Args);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsVprintf
+ *
+ * PARAMETERS:  fmt                 - Standard printf format
+ *              args                - Argument list
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Formatted output with argument list pointer
+ *
+ *****************************************************************************/
+
+void
+AcpiOsVprintf (
+    const char              *Fmt,
+    va_list                 Args)
+{
+    UINT8                   Flags;
+
+
+    Flags = AcpiGbl_DbOutputFlags;
+    if (Flags & ACPI_DB_REDIRECTABLE_OUTPUT)
+    {
+        /* Output is directable to either a file (if open) or the console */
+
+        if (AcpiGbl_DebugFile)
+        {
+            /* Output file is open, send the output there */
+
+            vfprintf (AcpiGbl_DebugFile, Fmt, Args);
+        }
+        else
+        {
+            /* No redirection, send output to console (once only!) */
+
+            Flags |= ACPI_DB_CONSOLE_OUTPUT;
+        }
+    }
+
+    if (Flags & ACPI_DB_CONSOLE_OUTPUT)
+    {
+        vfprintf (AcpiGbl_OutputFile, Fmt, Args);
+    }
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsGetLine
+ *
+ * PARAMETERS:  Buffer              - Where to return the command line
+ *              BufferLength        - Maximum length of Buffer
+ *              BytesRead           - Where the actual byte count is returned
+ *
+ * RETURN:      Status and actual bytes read
+ *
+ * DESCRIPTION: Formatted input with argument list pointer
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsGetLine (
+    char                    *Buffer,
+    UINT32                  BufferLength,
+    UINT32                  *BytesRead)
+{
+    UINT8                   Temp;
+    UINT32                  i;
+
+
+    for (i = 0; ; i++)
+    {
+        if (i >= BufferLength)
+        {
+            return (AE_BUFFER_OVERFLOW);
+        }
+
+        scanf ("%1c", &Temp);
+        if (!Temp || Temp == '\n')
+        {
+            break;
+        }
+
+        Buffer [i] = Temp;
+    }
+
+    /* Null terminate the buffer */
+
+    Buffer [i] = 0;
+
+    /* Return the number of bytes in the string */
+
+    if (BytesRead)
+    {
+        *BytesRead = i;
+    }
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsMapMemory
+ *
+ * PARAMETERS:  where               - Physical address of memory to be mapped
+ *              length              - How much memory to map
+ *
+ * RETURN:      Pointer to mapped memory. Null on error.
+ *
+ * DESCRIPTION: Map physical memory into caller's address space
+ *
+ *****************************************************************************/
+
+void *
+AcpiOsMapMemory (
+    ACPI_PHYSICAL_ADDRESS   where,
+    ACPI_SIZE               length)
+{
+
+    return (ACPI_TO_POINTER ((ACPI_SIZE) where));
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsUnmapMemory
+ *
+ * PARAMETERS:  where               - Logical address of memory to be unmapped
+ *              length              - How much memory to unmap
+ *
+ * RETURN:      None.
+ *
+ * DESCRIPTION: Delete a previously created mapping. Where and Length must
+ *              correspond to a previous mapping exactly.
+ *
+ *****************************************************************************/
+
+void
+AcpiOsUnmapMemory (
+    void                    *where,
+    ACPI_SIZE               length)
+{
+
+    return;
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsAllocate
+ *
+ * PARAMETERS:  Size                - Amount to allocate, in bytes
+ *
+ * RETURN:      Pointer to the new allocation. Null on error.
+ *
+ * DESCRIPTION: Allocate memory. Algorithm is dependent on the OS.
+ *
+ *****************************************************************************/
+
+void *
+AcpiOsAllocate (
+    ACPI_SIZE               size)
+{
+    void                    *Mem;
+
+
+    Mem = (void *) malloc ((size_t) size);
+    return (Mem);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsFree
+ *
+ * PARAMETERS:  mem                 - Pointer to previously allocated memory
+ *
+ * RETURN:      None.
+ *
+ * DESCRIPTION: Free memory allocated via AcpiOsAllocate
+ *
+ *****************************************************************************/
+
+void
+AcpiOsFree (
+    void                    *mem)
+{
+
+    free (mem);
+}
+
+
+#ifdef ACPI_SINGLE_THREADED
+/******************************************************************************
+ *
+ * FUNCTION:    Semaphore stub functions
+ *
+ * DESCRIPTION: Stub functions used for single-thread applications that do
+ *              not require semaphore synchronization. Full implementations
+ *              of these functions appear after the stubs.
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsCreateSemaphore (
+    UINT32              MaxUnits,
+    UINT32              InitialUnits,
+    ACPI_HANDLE         *OutHandle)
+{
+    *OutHandle = (ACPI_HANDLE) 1;
+    return (AE_OK);
+}
+
+ACPI_STATUS
+AcpiOsDeleteSemaphore (
+    ACPI_HANDLE         Handle)
+{
+    return (AE_OK);
+}
+
+ACPI_STATUS
+AcpiOsWaitSemaphore (
+    ACPI_HANDLE         Handle,
+    UINT32              Units,
+    UINT16              Timeout)
+{
+    return (AE_OK);
+}
+
+ACPI_STATUS
+AcpiOsSignalSemaphore (
+    ACPI_HANDLE         Handle,
+    UINT32              Units)
+{
+    return (AE_OK);
+}
+
+#else
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsCreateSemaphore
+ *
+ * PARAMETERS:  InitialUnits        - Units to be assigned to the new semaphore
+ *              OutHandle           - Where a handle will be returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Create an OS semaphore
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsCreateSemaphore (
+    UINT32              MaxUnits,
+    UINT32              InitialUnits,
+    ACPI_HANDLE         *OutHandle)
+{
+    sem_t               *Sem;
+
+
+    if (!OutHandle)
+    {
+        return (AE_BAD_PARAMETER);
+    }
+
+#ifdef __APPLE__
+    {
+        char            *SemaphoreName = tmpnam (NULL);
+
+        Sem = sem_open (SemaphoreName, O_EXCL|O_CREAT, 0755, InitialUnits);
+        if (!Sem)
+        {
+            return (AE_NO_MEMORY);
+        }
+        sem_unlink (SemaphoreName); /* This just deletes the name */
+    }
+
+#else
+    Sem = AcpiOsAllocate (sizeof (sem_t));
+    if (!Sem)
+    {
+        return (AE_NO_MEMORY);
+    }
+
+    if (sem_init (Sem, 0, InitialUnits) == -1)
+    {
+        AcpiOsFree (Sem);
+        return (AE_BAD_PARAMETER);
+    }
+#endif
+
+    *OutHandle = (ACPI_HANDLE) Sem;
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsDeleteSemaphore
+ *
+ * PARAMETERS:  Handle              - Handle returned by AcpiOsCreateSemaphore
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Delete an OS semaphore
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsDeleteSemaphore (
+    ACPI_HANDLE         Handle)
+{
+    sem_t               *Sem = (sem_t *) Handle;
+
+
+    if (!Sem)
+    {
+        return (AE_BAD_PARAMETER);
+    }
+
+    if (sem_destroy (Sem) == -1)
+    {
+        return (AE_BAD_PARAMETER);
+    }
+
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsWaitSemaphore
+ *
+ * PARAMETERS:  Handle              - Handle returned by AcpiOsCreateSemaphore
+ *              Units               - How many units to wait for
+ *              Timeout             - How long to wait
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Wait for units
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsWaitSemaphore (
+    ACPI_HANDLE         Handle,
+    UINT32              Units,
+    UINT16              Timeout)
+{
+    ACPI_STATUS         Status = AE_OK;
+    sem_t               *Sem = (sem_t *) Handle;
+    struct timespec     T;
+
+
+    if (!Sem)
+    {
+        return (AE_BAD_PARAMETER);
+    }
+
+    switch (Timeout)
+    {
+    /*
+     * No Wait:
+     * --------
+     * A zero timeout value indicates that we shouldn't wait - just
+     * acquire the semaphore if available otherwise return AE_TIME
+     * (a.k.a. 'would block').
+     */
+    case 0:
+
+        if (sem_trywait(Sem) == -1)
+        {
+            Status = (AE_TIME);
+        }
+        break;
+
+    /* Wait Indefinitely */
+
+    case ACPI_WAIT_FOREVER:
+
+        if (sem_wait (Sem))
+        {
+            Status = (AE_TIME);
+        }
+        break;
+
+    /* Wait with Timeout */
+
+    default:
+
+        T.tv_sec = Timeout / 1000;
+        T.tv_nsec = (Timeout - (T.tv_sec * 1000)) * 1000000;
+
+#ifdef ACPI_USE_ALTERNATE_TIMEOUT
+        /*
+         * Alternate timeout mechanism for environments where
+         * sem_timedwait is not available or does not work properly.
+         */
+        while (Timeout)
+        {
+            if (sem_trywait (Sem) == 0)
+            {
+                /* Got the semaphore */
+                return (AE_OK);
+            }
+            usleep (1000);  /* one millisecond */
+            Timeout--;
+        }
+        Status = (AE_TIME);
+#else
+
+        if (sem_timedwait (Sem, &T))
+        {
+            Status = (AE_TIME);
+        }
+#endif
+
+        break;
+    }
+
+    return (Status);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsSignalSemaphore
+ *
+ * PARAMETERS:  Handle              - Handle returned by AcpiOsCreateSemaphore
+ *              Units               - Number of units to send
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Send units
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsSignalSemaphore (
+    ACPI_HANDLE         Handle,
+    UINT32              Units)
+{
+    sem_t               *Sem = (sem_t *)Handle;
+
+
+    if (!Sem)
+    {
+        return (AE_BAD_PARAMETER);
+    }
+
+    if (sem_post (Sem) == -1)
+    {
+        return (AE_LIMIT);
+    }
+
+    return (AE_OK);
+}
+
+#endif /* ACPI_SINGLE_THREADED */
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    Spinlock interfaces
+ *
+ * DESCRIPTION: Map these interfaces to semaphore interfaces
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsCreateLock (
+    ACPI_SPINLOCK           *OutHandle)
+{
+
+    return (AcpiOsCreateSemaphore (1, 1, OutHandle));
+}
+
+
+void
+AcpiOsDeleteLock (
+    ACPI_SPINLOCK           Handle)
+{
+    AcpiOsDeleteSemaphore (Handle);
+}
+
+
+ACPI_CPU_FLAGS
+AcpiOsAcquireLock (
+    ACPI_HANDLE             Handle)
+{
+    AcpiOsWaitSemaphore (Handle, 1, 0xFFFF);
+    return (0);
+}
+
+
+void
+AcpiOsReleaseLock (
+    ACPI_SPINLOCK           Handle,
+    ACPI_CPU_FLAGS          Flags)
+{
+    AcpiOsSignalSemaphore (Handle, 1);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsInstallInterruptHandler
+ *
+ * PARAMETERS:  InterruptNumber     - Level handler should respond to.
+ *              Isr                 - Address of the ACPI interrupt handler
+ *              ExceptPtr           - Where status is returned
+ *
+ * RETURN:      Handle to the newly installed handler.
+ *
+ * DESCRIPTION: Install an interrupt handler. Used to install the ACPI
+ *              OS-independent handler.
+ *
+ *****************************************************************************/
+
+UINT32
+AcpiOsInstallInterruptHandler (
+    UINT32                  InterruptNumber,
+    ACPI_OSD_HANDLER        ServiceRoutine,
+    void                    *Context)
+{
+
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsRemoveInterruptHandler
+ *
+ * PARAMETERS:  Handle              - Returned when handler was installed
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Uninstalls an interrupt handler.
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsRemoveInterruptHandler (
+    UINT32                  InterruptNumber,
+    ACPI_OSD_HANDLER        ServiceRoutine)
+{
+
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsStall
+ *
+ * PARAMETERS:  microseconds        - Time to sleep
+ *
+ * RETURN:      Blocks until sleep is completed.
+ *
+ * DESCRIPTION: Sleep at microsecond granularity
+ *
+ *****************************************************************************/
+
+void
+AcpiOsStall (
+    UINT32                  microseconds)
+{
+
+    if (microseconds)
+    {
+        usleep (microseconds);
+    }
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsSleep
+ *
+ * PARAMETERS:  milliseconds        - Time to sleep
+ *
+ * RETURN:      Blocks until sleep is completed.
+ *
+ * DESCRIPTION: Sleep at millisecond granularity
+ *
+ *****************************************************************************/
+
+void
+AcpiOsSleep (
+    UINT64                  milliseconds)
+{
+
+    sleep (milliseconds / 1000);    /* Sleep for whole seconds */
+
+    /*
+     * Arg to usleep() must be less than 1,000,000 (1 second)
+     */
+    usleep ((milliseconds % 1000) * 1000);      /* Sleep for remaining usecs */
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsGetTimer
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Current time in 100 nanosecond units
+ *
+ * DESCRIPTION: Get the current system time
+ *
+ *****************************************************************************/
+
+UINT64
+AcpiOsGetTimer (
+    void)
+{
+    struct timeval          time;
+
+
+    gettimeofday (&time, NULL);
+
+    /* Seconds * 10^7 = 100ns(10^-7), Microseconds(10^-6) * 10^1 = 100ns */
+
+    return (((UINT64) time.tv_sec * 10000000) + ((UINT64) time.tv_usec * 10));
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsReadPciConfiguration
+ *
+ * PARAMETERS:  PciId               - Seg/Bus/Dev
+ *              Register            - Device Register
+ *              Value               - Buffer where value is placed
+ *              Width               - Number of bits
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Read data from PCI configuration space
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsReadPciConfiguration (
+    ACPI_PCI_ID             *PciId,
+    UINT32                  Register,
+    UINT64                  *Value,
+    UINT32                  Width)
+{
+
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsWritePciConfiguration
+ *
+ * PARAMETERS:  PciId               - Seg/Bus/Dev
+ *              Register            - Device Register
+ *              Value               - Value to be written
+ *              Width               - Number of bits
+ *
+ * RETURN:      Status.
+ *
+ * DESCRIPTION: Write data to PCI configuration space
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsWritePciConfiguration (
+    ACPI_PCI_ID             *PciId,
+    UINT32                  Register,
+    UINT64                  Value,
+    UINT32                  Width)
+{
+
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsReadPort
+ *
+ * PARAMETERS:  Address             - Address of I/O port/register to read
+ *              Value               - Where value is placed
+ *              Width               - Number of bits
+ *
+ * RETURN:      Value read from port
+ *
+ * DESCRIPTION: Read data from an I/O port or register
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsReadPort (
+    ACPI_IO_ADDRESS         Address,
+    UINT32                  *Value,
+    UINT32                  Width)
+{
+
+    switch (Width)
+    {
+    case 8:
+        *Value = 0xFF;
+        break;
+
+    case 16:
+        *Value = 0xFFFF;
+        break;
+
+    case 32:
+        *Value = 0xFFFFFFFF;
+        break;
+
+    default:
+        return (AE_BAD_PARAMETER);
+    }
+
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsWritePort
+ *
+ * PARAMETERS:  Address             - Address of I/O port/register to write
+ *              Value               - Value to write
+ *              Width               - Number of bits
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Write data to an I/O port or register
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsWritePort (
+    ACPI_IO_ADDRESS         Address,
+    UINT32                  Value,
+    UINT32                  Width)
+{
+
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsReadMemory
+ *
+ * PARAMETERS:  Address             - Physical Memory Address to read
+ *              Value               - Where value is placed
+ *              Width               - Number of bits (8,16,32, or 64)
+ *
+ * RETURN:      Value read from physical memory address. Always returned
+ *              as a 64-bit integer, regardless of the read width.
+ *
+ * DESCRIPTION: Read data from a physical memory address
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsReadMemory (
+    ACPI_PHYSICAL_ADDRESS   Address,
+    UINT64                  *Value,
+    UINT32                  Width)
+{
+
+    switch (Width)
+    {
+    case 8:
+    case 16:
+    case 32:
+    case 64:
+        *Value = 0;
+        break;
+
+    default:
+        return (AE_BAD_PARAMETER);
+    }
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsWriteMemory
+ *
+ * PARAMETERS:  Address             - Physical Memory Address to write
+ *              Value               - Value to write
+ *              Width               - Number of bits (8,16,32, or 64)
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Write data to a physical memory address
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsWriteMemory (
+    ACPI_PHYSICAL_ADDRESS   Address,
+    UINT64                  Value,
+    UINT32                  Width)
+{
+
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsReadable
+ *
+ * PARAMETERS:  Pointer             - Area to be verified
+ *              Length              - Size of area
+ *
+ * RETURN:      TRUE if readable for entire length
+ *
+ * DESCRIPTION: Verify that a pointer is valid for reading
+ *
+ *****************************************************************************/
+
+BOOLEAN
+AcpiOsReadable (
+    void                    *Pointer,
+    ACPI_SIZE               Length)
+{
+
+    return (TRUE);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsWritable
+ *
+ * PARAMETERS:  Pointer             - Area to be verified
+ *              Length              - Size of area
+ *
+ * RETURN:      TRUE if writable for entire length
+ *
+ * DESCRIPTION: Verify that a pointer is valid for writing
+ *
+ *****************************************************************************/
+
+BOOLEAN
+AcpiOsWritable (
+    void                    *Pointer,
+    ACPI_SIZE               Length)
+{
+
+    return (TRUE);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsSignal
+ *
+ * PARAMETERS:  Function            - ACPI CA signal function code
+ *              Info                - Pointer to function-dependent structure
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Miscellaneous functions. Example implementation only.
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsSignal (
+    UINT32                  Function,
+    void                    *Info)
+{
+
+    switch (Function)
+    {
+    case ACPI_SIGNAL_FATAL:
+        break;
+
+    case ACPI_SIGNAL_BREAKPOINT:
+        break;
+
+    default:
+        break;
+    }
+
+    return (AE_OK);
+}
+
+/* Optional multi-thread support */
+
+#ifndef ACPI_SINGLE_THREADED
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsGetThreadId
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Id of the running thread
+ *
+ * DESCRIPTION: Get the ID of the current (running) thread
+ *
+ *****************************************************************************/
+
+ACPI_THREAD_ID
+AcpiOsGetThreadId (
+    void)
+{
+    pthread_t               thread;
+
+
+    thread = pthread_self();
+    return (ACPI_CAST_PTHREAD_T (thread));
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsExecute
+ *
+ * PARAMETERS:  Type                - Type of execution
+ *              Function            - Address of the function to execute
+ *              Context             - Passed as a parameter to the function
+ *
+ * RETURN:      Status.
+ *
+ * DESCRIPTION: Execute a new thread
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsExecute (
+    ACPI_EXECUTE_TYPE       Type,
+    ACPI_OSD_EXEC_CALLBACK  Function,
+    void                    *Context)
+{
+    pthread_t               thread;
+    int                     ret;
+
+
+    ret = pthread_create (&thread, NULL, (PTHREAD_CALLBACK) Function, Context);
+    if (ret)
+    {
+        AcpiOsPrintf("Create thread failed");
+    }
+    return (0);
+}
+
+#endif /* ACPI_SINGLE_THREADED */
diff --git a/source/os_specific/service_layers/oswindir.c b/source/os_specific/service_layers/oswindir.c
new file mode 100644
index 000000000000..2cdcb945860b
--- /dev/null
+++ b/source/os_specific/service_layers/oswindir.c
@@ -0,0 +1,251 @@
+
+/******************************************************************************
+ *
+ * Module Name: oswindir - Windows directory access interfaces
+ *
+ *****************************************************************************/
+
+/*
+ * 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.
+ */
+
+#include <acpi.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <io.h>
+
+typedef struct ExternalFindInfo
+{
+    struct _finddata_t          DosInfo;
+    char                        *FullWildcardSpec;
+    long                        FindHandle;
+    char                        State;
+    char                        RequestedFileType;
+
+} EXTERNAL_FIND_INFO;
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiOsOpenDirectory
+ *
+ * PARAMETERS:  DirPathname         - Full pathname to the directory
+ *              WildcardSpec        - string of the form "*.c", etc.
+ *              RequestedFileType   - Either a directory or normal file
+ *
+ * RETURN:      A directory "handle" to be used in subsequent search operations.
+ *              NULL returned on failure.
+ *
+ * DESCRIPTION: Open a directory in preparation for a wildcard search
+ *
+ ******************************************************************************/
+
+void *
+AcpiOsOpenDirectory (
+    char                    *DirPathname,
+    char                    *WildcardSpec,
+    char                    RequestedFileType)
+{
+    long                    FindHandle;
+    char                    *FullWildcardSpec;
+    EXTERNAL_FIND_INFO      *SearchInfo;
+
+
+    /* No directory path means "use current directory" - use a dot */
+
+    if (!DirPathname || strlen (DirPathname) == 0)
+    {
+        DirPathname = ".";
+    }
+
+    /* Allocate the info struct that will be returned to the caller */
+
+    SearchInfo = calloc (sizeof (EXTERNAL_FIND_INFO), 1);
+    if (!SearchInfo)
+    {
+        return (NULL);
+    }
+
+    /* Allocate space for the full wildcard path */
+
+    FullWildcardSpec = calloc (strlen (DirPathname) + strlen (WildcardSpec) + 2, 1);
+    if (!FullWildcardSpec)
+    {
+        printf ("Could not allocate buffer for wildcard pathname\n");
+        return (NULL);
+    }
+
+    /* Create the full wildcard path */
+
+    strcpy (FullWildcardSpec, DirPathname);
+    strcat (FullWildcardSpec, "/");
+    strcat (FullWildcardSpec, WildcardSpec);
+
+    /* Initialize the find functions, get first match */
+
+    FindHandle = _findfirst (FullWildcardSpec, &SearchInfo->DosInfo);
+    if (FindHandle == -1)
+    {
+        /* Failure means that no match was found */
+
+        free (FullWildcardSpec);
+        free (SearchInfo);
+        return (NULL);
+    }
+
+    /* Save the info in the return structure */
+
+    SearchInfo->RequestedFileType = RequestedFileType;
+    SearchInfo->FullWildcardSpec = FullWildcardSpec;
+    SearchInfo->FindHandle = FindHandle;
+    SearchInfo->State = 0;
+    return (SearchInfo);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiOsGetNextFilename
+ *
+ * PARAMETERS:  DirHandle           - Created via AcpiOsOpenDirectory
+ *
+ * RETURN:      Next filename matched. NULL if no more matches.
+ *
+ * DESCRIPTION: Get the next file in the directory that matches the wildcard
+ *              specification.
+ *
+ ******************************************************************************/
+
+char *
+AcpiOsGetNextFilename (
+    void                    *DirHandle)
+{
+    EXTERNAL_FIND_INFO      *SearchInfo = DirHandle;
+    int                     Status;
+    char                    FileTypeNotMatched = 1;
+
+
+    /*
+     * Loop while we have matched files but not found any files of
+     * the requested type.
+     */
+    while (FileTypeNotMatched)
+    {
+        /* On the first call, we already have the first match */
+
+        if (SearchInfo->State == 0)
+        {
+            /* No longer the first match */
+
+            SearchInfo->State = 1;
+        }
+        else
+        {
+            /* Get the next match */
+
+            Status = _findnext (SearchInfo->FindHandle, &SearchInfo->DosInfo);
+            if (Status != 0)
+            {
+                return (NULL);
+            }
+        }
+
+        /*
+         * Found a match, now check to make sure that the file type
+         * matches the requested file type (directory or normal file)
+         *
+         * NOTE: use of the attrib field saves us from doing a very
+         * expensive stat() on the file!
+         */
+        switch (SearchInfo->RequestedFileType)
+        {
+        case REQUEST_FILE_ONLY:
+
+            /* Anything other than A_SUBDIR is OK */
+
+            if (!(SearchInfo->DosInfo.attrib & _A_SUBDIR))
+            {
+                FileTypeNotMatched = 0;
+            }
+            break;
+
+        case REQUEST_DIR_ONLY:
+
+            /* Must have A_SUBDIR bit set */
+
+            if (SearchInfo->DosInfo.attrib & _A_SUBDIR)
+            {
+                FileTypeNotMatched = 0;
+            }
+            break;
+
+        default:
+            return (NULL);
+        }
+    }
+
+    return (SearchInfo->DosInfo.name);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiOsCloseDirectory
+ *
+ * PARAMETERS:  DirHandle           - Created via AcpiOsOpenDirectory
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Close the open directory and cleanup.
+ *
+ ******************************************************************************/
+
+void
+AcpiOsCloseDirectory (
+    void                    *DirHandle)
+{
+    EXTERNAL_FIND_INFO      *SearchInfo = DirHandle;
+
+
+    /* Close the directory and free allocations */
+
+    _findclose (SearchInfo->FindHandle);
+    free (SearchInfo->FullWildcardSpec);
+    free (DirHandle);
+}
+
diff --git a/source/os_specific/service_layers/oswintbl.c b/source/os_specific/service_layers/oswintbl.c
new file mode 100644
index 000000000000..db34966a0d9e
--- /dev/null
+++ b/source/os_specific/service_layers/oswintbl.c
@@ -0,0 +1,222 @@
+/******************************************************************************
+ *
+ * Module Name: oswintbl - Windows OSL for obtaining 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.
+ */
+
+
+#include "acpi.h"
+
+#ifdef WIN32
+#pragma warning(disable:4115)   /* warning C4115: (caused by rpcasync.h) */
+#include <windows.h>
+
+#elif WIN64
+#include <windowsx.h>
+#endif
+
+#define _COMPONENT          ACPI_OS_SERVICES
+        ACPI_MODULE_NAME    ("oswintbl")
+
+
+static char             KeyBuffer[64];
+static char             ErrorBuffer[64];
+
+
+/* Little front-end to win FormatMessage */
+
+char *
+OsFormatException (
+    LONG                Status)
+{
+
+    ErrorBuffer[0] = 0;
+    FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, NULL, Status, 0,
+        ErrorBuffer, 64, NULL);
+
+    return (ErrorBuffer);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    OsGetTable
+ *
+ * PARAMETERS:  Signature       - ACPI Signature for desired table. must be
+ *                                  a null terminated string.
+ *
+ * RETURN:      Pointer to the table. NULL if failure.
+ *
+ * DESCRIPTION: Get an ACPI table from the Windows registry.
+ *
+ *****************************************************************************/
+
+ACPI_TABLE_HEADER *
+OsGetTable (
+    char                *Signature)
+{
+    HKEY                Handle = NULL;
+    ULONG               i;
+    LONG                Status;
+    ULONG               Type;
+    ULONG               NameSize;
+    ULONG               DataSize;
+    HKEY                SubKey;
+    ACPI_TABLE_HEADER   *ReturnTable;
+
+
+    /* Get a handle to the table key */
+
+    while (1)
+    {
+        ACPI_STRCPY (KeyBuffer, "HARDWARE\\ACPI\\");
+        ACPI_STRCAT (KeyBuffer, Signature);
+
+        Status = RegOpenKeyEx (HKEY_LOCAL_MACHINE, KeyBuffer,
+                    0L, KEY_READ, &Handle);
+
+        if (Status != ERROR_SUCCESS)
+        {
+            /*
+             * Somewhere along the way, MS changed the registry entry for
+             * the FADT from
+             * HARDWARE/ACPI/FACP  to
+             * HARDWARE/ACPI/FADT.
+             *
+             * This code allows for both.
+             */
+            if (ACPI_COMPARE_NAME (Signature, "FACP"))
+            {
+                Signature = "FADT";
+            }
+            else
+            {
+                AcpiOsPrintf (
+                    "Could not find %s in registry at %s: %s (Status=0x%X)\n",
+                    Signature, KeyBuffer, OsFormatException (Status), Status);
+                return (NULL);
+            }
+        }
+        else
+        {
+            break;
+        }
+    }
+
+    /* Actual data for table is down a couple levels */
+
+    for (i = 0; ;)
+    {
+        Status = RegEnumKey (Handle, i, KeyBuffer, sizeof (KeyBuffer));
+        i += 1;
+        if (Status == ERROR_NO_MORE_ITEMS)
+        {
+            break;
+        }
+
+        Status = RegOpenKey (Handle, KeyBuffer, &SubKey);
+        if (Status != ERROR_SUCCESS)
+        {
+            AcpiOsPrintf ("Could not open %s entry: %s\n",
+                Signature, OsFormatException (Status));
+            return (NULL);
+        }
+
+        RegCloseKey (Handle);
+        Handle = SubKey;
+        i = 0;
+    }
+
+    /* Find the (binary) table entry */
+
+    for (i = 0; ;)
+    {
+        NameSize = sizeof (KeyBuffer);
+        Status = RegEnumValue (Handle, i, KeyBuffer, &NameSize,
+                    NULL, &Type, NULL, 0);
+        if (Status != ERROR_SUCCESS)
+        {
+            AcpiOsPrintf ("Could not get %s registry entry: %s\n",
+                Signature, OsFormatException (Status));
+            return (NULL);
+        }
+
+        if (Type == REG_BINARY)
+        {
+            break;
+        }
+        i += 1;
+    }
+
+    /* Get the size of the table */
+
+    Status = RegQueryValueEx (Handle, KeyBuffer, NULL, NULL, NULL, &DataSize);
+    if (Status != ERROR_SUCCESS)
+    {
+        AcpiOsPrintf ("Could not read the %s table size: %s\n",
+            Signature, OsFormatException (Status));
+        return (NULL);
+    }
+
+    /* Allocate a new buffer for the table */
+
+    ReturnTable = AcpiOsAllocate (DataSize);
+    if (!ReturnTable)
+    {
+        goto Cleanup;
+    }
+
+    /* Get the actual table from the registry */
+
+    Status = RegQueryValueEx (Handle, KeyBuffer, NULL, NULL,
+                (UCHAR *) ReturnTable, &DataSize);
+    if (Status != ERROR_SUCCESS)
+    {
+        AcpiOsPrintf ("Could not read %s data: %s\n",
+            Signature, OsFormatException (Status));
+        AcpiOsFree (ReturnTable);
+        return (NULL);
+    }
+
+Cleanup:
+    RegCloseKey (Handle);
+    return (ReturnTable);
+}
+
diff --git a/source/os_specific/service_layers/oswinxf.c b/source/os_specific/service_layers/oswinxf.c
new file mode 100644
index 000000000000..008dcb30c536
--- /dev/null
+++ b/source/os_specific/service_layers/oswinxf.c
@@ -0,0 +1,1481 @@
+/******************************************************************************
+ *
+ * Module Name: oswinxf - Windows OSL
+ *
+ *****************************************************************************/
+
+/*
+ * 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.
+ */
+
+#include "acpi.h"
+#include "accommon.h"
+
+#ifdef WIN32
+#pragma warning(disable:4115)   /* warning C4115: named type definition in parentheses (caused by rpcasync.h> */
+
+#include <windows.h>
+#include <winbase.h>
+
+#elif WIN64
+#include <windowsx.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <process.h>
+#include <time.h>
+
+#define _COMPONENT          ACPI_OS_SERVICES
+        ACPI_MODULE_NAME    ("oswinxf")
+
+
+extern FILE                 *AcpiGbl_DebugFile;
+extern BOOLEAN              AcpiGbl_DebugTimeout;
+
+FILE                        *AcpiGbl_OutputFile;
+UINT64                      TimerFrequency;
+char                        TableName[ACPI_NAME_SIZE + 1];
+
+#define ACPI_OS_DEBUG_TIMEOUT   30000 /* 30 seconds */
+
+
+/* Upcalls to application */
+
+ACPI_PHYSICAL_ADDRESS
+AeLocalGetRootPointer (
+    void);
+
+void
+AeTableOverride (
+    ACPI_TABLE_HEADER       *ExistingTable,
+    ACPI_TABLE_HEADER       **NewTable);
+
+ACPI_TABLE_HEADER *
+OsGetTable (
+    char                    *Signature);
+
+
+/*
+ * Real semaphores are only used for a multi-threaded application
+ */
+#ifndef ACPI_SINGLE_THREADED
+
+/* Semaphore information structure */
+
+typedef struct acpi_os_semaphore_info
+{
+    UINT16                  MaxUnits;
+    UINT16                  CurrentUnits;
+    void                    *OsHandle;
+
+} ACPI_OS_SEMAPHORE_INFO;
+
+/* Need enough semaphores to run the large aslts suite */
+
+#define ACPI_OS_MAX_SEMAPHORES  256
+
+ACPI_OS_SEMAPHORE_INFO          AcpiGbl_Semaphores[ACPI_OS_MAX_SEMAPHORES];
+
+#endif /* ACPI_SINGLE_THREADED */
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsTerminate
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Nothing to do for windows
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsTerminate (
+    void)
+{
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsInitialize
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Init this OSL
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsInitialize (
+    void)
+{
+    LARGE_INTEGER           LocalTimerFrequency;
+
+
+#ifndef ACPI_SINGLE_THREADED
+    /* Clear the semaphore info array */
+
+    memset (AcpiGbl_Semaphores, 0x00, sizeof (AcpiGbl_Semaphores));
+#endif
+
+    AcpiGbl_OutputFile = stdout;
+
+    /* Get the timer frequency for use in AcpiOsGetTimer */
+
+    TimerFrequency = 0;
+    if (QueryPerformanceFrequency (&LocalTimerFrequency))
+    {
+        /* Frequency is in ticks per second */
+
+        TimerFrequency = LocalTimerFrequency.QuadPart;
+    }
+
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsGetRootPointer
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      RSDP physical address
+ *
+ * DESCRIPTION: Gets the root pointer (RSDP)
+ *
+ *****************************************************************************/
+
+ACPI_PHYSICAL_ADDRESS
+AcpiOsGetRootPointer (
+    void)
+{
+
+    return (AeLocalGetRootPointer ());
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsPredefinedOverride
+ *
+ * PARAMETERS:  InitVal             - Initial value of the predefined object
+ *              NewVal              - The new value for the object
+ *
+ * RETURN:      Status, pointer to value. Null pointer returned if not
+ *              overriding.
+ *
+ * DESCRIPTION: Allow the OS to override predefined names
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsPredefinedOverride (
+    const ACPI_PREDEFINED_NAMES *InitVal,
+    ACPI_STRING                 *NewVal)
+{
+
+    if (!InitVal || !NewVal)
+    {
+        return (AE_BAD_PARAMETER);
+    }
+
+    *NewVal = NULL;
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsTableOverride
+ *
+ * PARAMETERS:  ExistingTable       - Header of current table (probably firmware)
+ *              NewTable            - Where an entire new table is returned.
+ *
+ * RETURN:      Status, pointer to new table. Null pointer returned if no
+ *              table is available to override
+ *
+ * DESCRIPTION: Return a different version of a table if one is available
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsTableOverride (
+    ACPI_TABLE_HEADER       *ExistingTable,
+    ACPI_TABLE_HEADER       **NewTable)
+{
+
+    if (!ExistingTable || !NewTable)
+    {
+        return (AE_BAD_PARAMETER);
+    }
+
+    *NewTable = NULL;
+
+
+#ifdef ACPI_EXEC_APP
+
+    /* Call back up to AcpiExec */
+
+    AeTableOverride (ExistingTable, NewTable);
+#endif
+
+
+#ifdef ACPI_ASL_COMPILER
+
+    /* Attempt to get the table from the registry */
+
+    /* Construct a null-terminated string from table signature */
+
+    TableName[ACPI_NAME_SIZE] = 0;
+    ACPI_STRNCPY (TableName, ExistingTable->Signature, ACPI_NAME_SIZE);
+
+    *NewTable = OsGetTable (TableName);
+    if (*NewTable)
+    {
+        AcpiOsPrintf ("Table [%s] obtained from registry, %u bytes\n",
+            TableName, (*NewTable)->Length);
+    }
+    else
+    {
+        AcpiOsPrintf ("Could not read table %s from registry\n", TableName);
+    }
+#endif
+
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsPhysicalTableOverride
+ *
+ * PARAMETERS:  ExistingTable       - Header of current table (probably firmware)
+ *              NewAddress          - Where new table address is returned
+ *                                    (Physical address)
+ *              NewTableLength      - Where new table length is returned
+ *
+ * RETURN:      Status, address/length of new table. Null pointer returned
+ *              if no table is available to override.
+ *
+ * DESCRIPTION: Returns AE_SUPPORT, function not used in user space.
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsPhysicalTableOverride (
+    ACPI_TABLE_HEADER       *ExistingTable,
+    ACPI_PHYSICAL_ADDRESS   *NewAddress,
+    UINT32                  *NewTableLength)
+{
+
+    return (AE_SUPPORT);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsGetTimer
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Current ticks in 100-nanosecond units
+ *
+ * DESCRIPTION: Get the value of a system timer
+ *
+ ******************************************************************************/
+
+UINT64
+AcpiOsGetTimer (
+    void)
+{
+    LARGE_INTEGER           Timer;
+
+
+    /* Attempt to use hi-granularity timer first */
+
+    if (TimerFrequency &&
+        QueryPerformanceCounter (&Timer))
+    {
+        /* Convert to 100 nanosecond ticks */
+
+        return ((UINT64) ((Timer.QuadPart * (UINT64) 10000000) / TimerFrequency));
+    }
+
+    /* Fall back to the lo-granularity timer */
+
+    else
+    {
+        /* Convert milliseconds to 100 nanosecond ticks */
+
+        return ((UINT64) GetTickCount() * 10000);
+    }
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsReadable
+ *
+ * PARAMETERS:  Pointer             - Area to be verified
+ *              Length              - Size of area
+ *
+ * RETURN:      TRUE if readable for entire length
+ *
+ * DESCRIPTION: Verify that a pointer is valid for reading
+ *
+ *****************************************************************************/
+
+BOOLEAN
+AcpiOsReadable (
+    void                    *Pointer,
+    ACPI_SIZE               Length)
+{
+
+    return ((BOOLEAN) !IsBadReadPtr (Pointer, Length));
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsWritable
+ *
+ * PARAMETERS:  Pointer             - Area to be verified
+ *              Length              - Size of area
+ *
+ * RETURN:      TRUE if writable for entire length
+ *
+ * DESCRIPTION: Verify that a pointer is valid for writing
+ *
+ *****************************************************************************/
+
+BOOLEAN
+AcpiOsWritable (
+    void                    *Pointer,
+    ACPI_SIZE               Length)
+{
+
+    return ((BOOLEAN) !IsBadWritePtr (Pointer, Length));
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsRedirectOutput
+ *
+ * PARAMETERS:  Destination         - An open file handle/pointer
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Causes redirect of AcpiOsPrintf and AcpiOsVprintf
+ *
+ *****************************************************************************/
+
+void
+AcpiOsRedirectOutput (
+    void                    *Destination)
+{
+
+    AcpiGbl_OutputFile = Destination;
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsPrintf
+ *
+ * PARAMETERS:  Fmt, ...            - Standard printf format
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Formatted output
+ *
+ *****************************************************************************/
+
+void ACPI_INTERNAL_VAR_XFACE
+AcpiOsPrintf (
+    const char              *Fmt,
+    ...)
+{
+    va_list                 Args;
+
+
+    va_start (Args, Fmt);
+
+    AcpiOsVprintf (Fmt, Args);
+
+    va_end (Args);
+    return;
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsVprintf
+ *
+ * PARAMETERS:  Fmt                 - Standard printf format
+ *              Args                - Argument list
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Formatted output with argument list pointer
+ *
+ *****************************************************************************/
+
+void
+AcpiOsVprintf (
+    const char              *Fmt,
+    va_list                 Args)
+{
+    INT32                   Count = 0;
+    UINT8                   Flags;
+
+
+    Flags = AcpiGbl_DbOutputFlags;
+    if (Flags & ACPI_DB_REDIRECTABLE_OUTPUT)
+    {
+        /* Output is directable to either a file (if open) or the console */
+
+        if (AcpiGbl_DebugFile)
+        {
+            /* Output file is open, send the output there */
+
+            Count = vfprintf (AcpiGbl_DebugFile, Fmt, Args);
+        }
+        else
+        {
+            /* No redirection, send output to console (once only!) */
+
+            Flags |= ACPI_DB_CONSOLE_OUTPUT;
+        }
+    }
+
+    if (Flags & ACPI_DB_CONSOLE_OUTPUT)
+    {
+        Count = vfprintf (AcpiGbl_OutputFile, Fmt, Args);
+    }
+
+    return;
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsGetLine
+ *
+ * PARAMETERS:  Buffer              - Where to return the command line
+ *              BufferLength        - Maximum length of Buffer
+ *              BytesRead           - Where the actual byte count is returned
+ *
+ * RETURN:      Status and actual bytes read
+ *
+ * DESCRIPTION: Formatted input with argument list pointer
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsGetLine (
+    char                    *Buffer,
+    UINT32                  BufferLength,
+    UINT32                  *BytesRead)
+{
+    char                    Temp;
+    UINT32                  i;
+
+
+    for (i = 0; ; i++)
+    {
+        if (i >= BufferLength)
+        {
+            return (AE_BUFFER_OVERFLOW);
+        }
+
+        scanf ("%1c", &Temp);
+        if (!Temp || Temp == '\n')
+        {
+            break;
+        }
+
+        Buffer [i] = Temp;
+    }
+
+    /* Null terminate the buffer */
+
+    Buffer [i] = 0;
+
+    /* Return the number of bytes in the string */
+
+    if (BytesRead)
+    {
+        *BytesRead = i;
+    }
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsMapMemory
+ *
+ * PARAMETERS:  Where               - Physical address of memory to be mapped
+ *              Length              - How much memory to map
+ *
+ * RETURN:      Pointer to mapped memory. Null on error.
+ *
+ * DESCRIPTION: Map physical memory into caller's address space
+ *
+ *****************************************************************************/
+
+void *
+AcpiOsMapMemory (
+    ACPI_PHYSICAL_ADDRESS   Where,
+    ACPI_SIZE               Length)
+{
+
+    return (ACPI_TO_POINTER ((ACPI_SIZE) Where));
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsUnmapMemory
+ *
+ * PARAMETERS:  Where               - Logical address of memory to be unmapped
+ *              Length              - How much memory to unmap
+ *
+ * RETURN:      None.
+ *
+ * DESCRIPTION: Delete a previously created mapping. Where and Length must
+ *              correspond to a previous mapping exactly.
+ *
+ *****************************************************************************/
+
+void
+AcpiOsUnmapMemory (
+    void                    *Where,
+    ACPI_SIZE               Length)
+{
+
+    return;
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsAllocate
+ *
+ * PARAMETERS:  Size                - Amount to allocate, in bytes
+ *
+ * RETURN:      Pointer to the new allocation. Null on error.
+ *
+ * DESCRIPTION: Allocate memory. Algorithm is dependent on the OS.
+ *
+ *****************************************************************************/
+
+void *
+AcpiOsAllocate (
+    ACPI_SIZE               Size)
+{
+    void                    *Mem;
+
+
+    Mem = (void *) malloc ((size_t) Size);
+
+    return (Mem);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsFree
+ *
+ * PARAMETERS:  Mem                 - Pointer to previously allocated memory
+ *
+ * RETURN:      None.
+ *
+ * DESCRIPTION: Free memory allocated via AcpiOsAllocate
+ *
+ *****************************************************************************/
+
+void
+AcpiOsFree (
+    void                    *Mem)
+{
+
+    free (Mem);
+}
+
+
+#ifdef ACPI_SINGLE_THREADED
+/******************************************************************************
+ *
+ * FUNCTION:    Semaphore stub functions
+ *
+ * DESCRIPTION: Stub functions used for single-thread applications that do
+ *              not require semaphore synchronization. Full implementations
+ *              of these functions appear after the stubs.
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsCreateSemaphore (
+    UINT32              MaxUnits,
+    UINT32              InitialUnits,
+    ACPI_HANDLE         *OutHandle)
+{
+    *OutHandle = (ACPI_HANDLE) 1;
+    return (AE_OK);
+}
+
+ACPI_STATUS
+AcpiOsDeleteSemaphore (
+    ACPI_HANDLE         Handle)
+{
+    return (AE_OK);
+}
+
+ACPI_STATUS
+AcpiOsWaitSemaphore (
+    ACPI_HANDLE         Handle,
+    UINT32              Units,
+    UINT16              Timeout)
+{
+    return (AE_OK);
+}
+
+ACPI_STATUS
+AcpiOsSignalSemaphore (
+    ACPI_HANDLE         Handle,
+    UINT32              Units)
+{
+    return (AE_OK);
+}
+
+#else
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsCreateSemaphore
+ *
+ * PARAMETERS:  MaxUnits            - Maximum units that can be sent
+ *              InitialUnits        - Units to be assigned to the new semaphore
+ *              OutHandle           - Where a handle will be returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Create an OS semaphore
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsCreateSemaphore (
+    UINT32              MaxUnits,
+    UINT32              InitialUnits,
+    ACPI_SEMAPHORE      *OutHandle)
+{
+    void                *Mutex;
+    UINT32              i;
+
+    ACPI_FUNCTION_NAME (OsCreateSemaphore);
+
+
+    if (MaxUnits == ACPI_UINT32_MAX)
+    {
+        MaxUnits = 255;
+    }
+
+    if (InitialUnits == ACPI_UINT32_MAX)
+    {
+        InitialUnits = MaxUnits;
+    }
+
+    if (InitialUnits > MaxUnits)
+    {
+        return (AE_BAD_PARAMETER);
+    }
+
+    /* Find an empty slot */
+
+    for (i = 0; i < ACPI_OS_MAX_SEMAPHORES; i++)
+    {
+        if (!AcpiGbl_Semaphores[i].OsHandle)
+        {
+            break;
+        }
+    }
+    if (i >= ACPI_OS_MAX_SEMAPHORES)
+    {
+        ACPI_EXCEPTION ((AE_INFO, AE_LIMIT,
+            "Reached max semaphores (%u), could not create", ACPI_OS_MAX_SEMAPHORES));
+        return (AE_LIMIT);
+    }
+
+    /* Create an OS semaphore */
+
+    Mutex = CreateSemaphore (NULL, InitialUnits, MaxUnits, NULL);
+    if (!Mutex)
+    {
+        ACPI_ERROR ((AE_INFO, "Could not create semaphore"));
+        return (AE_NO_MEMORY);
+    }
+
+    AcpiGbl_Semaphores[i].MaxUnits = (UINT16) MaxUnits;
+    AcpiGbl_Semaphores[i].CurrentUnits = (UINT16) InitialUnits;
+    AcpiGbl_Semaphores[i].OsHandle = Mutex;
+
+    ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, "Handle=%u, Max=%u, Current=%u, OsHandle=%p\n",
+            i, MaxUnits, InitialUnits, Mutex));
+
+    *OutHandle = (void *) i;
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsDeleteSemaphore
+ *
+ * PARAMETERS:  Handle              - Handle returned by AcpiOsCreateSemaphore
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Delete an OS semaphore
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsDeleteSemaphore (
+    ACPI_SEMAPHORE      Handle)
+{
+    UINT32              Index = (UINT32) Handle;
+
+
+    if ((Index >= ACPI_OS_MAX_SEMAPHORES) ||
+        !AcpiGbl_Semaphores[Index].OsHandle)
+    {
+        return (AE_BAD_PARAMETER);
+    }
+
+    CloseHandle (AcpiGbl_Semaphores[Index].OsHandle);
+    AcpiGbl_Semaphores[Index].OsHandle = NULL;
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsWaitSemaphore
+ *
+ * PARAMETERS:  Handle              - Handle returned by AcpiOsCreateSemaphore
+ *              Units               - How many units to wait for
+ *              Timeout             - How long to wait
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Wait for units
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsWaitSemaphore (
+    ACPI_SEMAPHORE      Handle,
+    UINT32              Units,
+    UINT16              Timeout)
+{
+    UINT32              Index = (UINT32) Handle;
+    UINT32              WaitStatus;
+    UINT32              OsTimeout = Timeout;
+
+
+    ACPI_FUNCTION_ENTRY ();
+
+
+    if ((Index >= ACPI_OS_MAX_SEMAPHORES) ||
+        !AcpiGbl_Semaphores[Index].OsHandle)
+    {
+        return (AE_BAD_PARAMETER);
+    }
+
+    if (Units > 1)
+    {
+        printf ("WaitSemaphore: Attempt to receive %u units\n", Units);
+        return (AE_NOT_IMPLEMENTED);
+    }
+
+    if (Timeout == ACPI_WAIT_FOREVER)
+    {
+        OsTimeout = INFINITE;
+        if (AcpiGbl_DebugTimeout)
+        {
+            /* The debug timeout will prevent hang conditions */
+
+            OsTimeout = ACPI_OS_DEBUG_TIMEOUT;
+        }
+    }
+    else
+    {
+        /* Add 10ms to account for clock tick granularity */
+
+        OsTimeout += 10;
+    }
+
+    WaitStatus = WaitForSingleObject (AcpiGbl_Semaphores[Index].OsHandle, OsTimeout);
+    if (WaitStatus == WAIT_TIMEOUT)
+    {
+        if (AcpiGbl_DebugTimeout)
+        {
+            ACPI_EXCEPTION ((AE_INFO, AE_TIME,
+                "Debug timeout on semaphore 0x%04X (%ums)\n",
+                Index, ACPI_OS_DEBUG_TIMEOUT));
+        }
+        return (AE_TIME);
+    }
+
+    if (AcpiGbl_Semaphores[Index].CurrentUnits == 0)
+    {
+        ACPI_ERROR ((AE_INFO, "%s - No unit received. Timeout 0x%X, OS_Status 0x%X",
+            AcpiUtGetMutexName (Index), Timeout, WaitStatus));
+
+        return (AE_OK);
+    }
+
+    AcpiGbl_Semaphores[Index].CurrentUnits--;
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsSignalSemaphore
+ *
+ * PARAMETERS:  Handle              - Handle returned by AcpiOsCreateSemaphore
+ *              Units               - Number of units to send
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Send units
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsSignalSemaphore (
+    ACPI_SEMAPHORE      Handle,
+    UINT32              Units)
+{
+    UINT32              Index = (UINT32) Handle;
+
+
+    ACPI_FUNCTION_ENTRY ();
+
+
+    if (Index >= ACPI_OS_MAX_SEMAPHORES)
+    {
+        printf ("SignalSemaphore: Index/Handle out of range: %2.2X\n", Index);
+        return (AE_BAD_PARAMETER);
+    }
+
+    if (!AcpiGbl_Semaphores[Index].OsHandle)
+    {
+        printf ("SignalSemaphore: Null OS handle, Index %2.2X\n", Index);
+        return (AE_BAD_PARAMETER);
+    }
+
+    if (Units > 1)
+    {
+        printf ("SignalSemaphore: Attempt to signal %u units, Index %2.2X\n", Units, Index);
+        return (AE_NOT_IMPLEMENTED);
+    }
+
+    if ((AcpiGbl_Semaphores[Index].CurrentUnits + 1) >
+        AcpiGbl_Semaphores[Index].MaxUnits)
+    {
+        ACPI_ERROR ((AE_INFO,
+            "Oversignalled semaphore[%u]! Current %u Max %u",
+            Index, AcpiGbl_Semaphores[Index].CurrentUnits,
+            AcpiGbl_Semaphores[Index].MaxUnits));
+
+        return (AE_LIMIT);
+    }
+
+    AcpiGbl_Semaphores[Index].CurrentUnits++;
+    ReleaseSemaphore (AcpiGbl_Semaphores[Index].OsHandle, Units, NULL);
+
+    return (AE_OK);
+}
+
+#endif /* ACPI_SINGLE_THREADED */
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    Spinlock interfaces
+ *
+ * DESCRIPTION: Map these interfaces to semaphore interfaces
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsCreateLock (
+    ACPI_SPINLOCK           *OutHandle)
+{
+    return (AcpiOsCreateSemaphore (1, 1, OutHandle));
+}
+
+void
+AcpiOsDeleteLock (
+    ACPI_SPINLOCK           Handle)
+{
+    AcpiOsDeleteSemaphore (Handle);
+}
+
+ACPI_CPU_FLAGS
+AcpiOsAcquireLock (
+    ACPI_SPINLOCK           Handle)
+{
+    AcpiOsWaitSemaphore (Handle, 1, 0xFFFF);
+    return (0);
+}
+
+void
+AcpiOsReleaseLock (
+    ACPI_SPINLOCK           Handle,
+    ACPI_CPU_FLAGS          Flags)
+{
+    AcpiOsSignalSemaphore (Handle, 1);
+}
+
+
+#if ACPI_FUTURE_IMPLEMENTATION
+
+/* Mutex interfaces, just implement with a semaphore */
+
+ACPI_STATUS
+AcpiOsCreateMutex (
+    ACPI_MUTEX              *OutHandle)
+{
+    return (AcpiOsCreateSemaphore (1, 1, OutHandle));
+}
+
+void
+AcpiOsDeleteMutex (
+    ACPI_MUTEX              Handle)
+{
+    AcpiOsDeleteSemaphore (Handle);
+}
+
+ACPI_STATUS
+AcpiOsAcquireMutex (
+    ACPI_MUTEX              Handle,
+    UINT16                  Timeout)
+{
+    AcpiOsWaitSemaphore (Handle, 1, Timeout);
+    return (0);
+}
+
+void
+AcpiOsReleaseMutex (
+    ACPI_MUTEX              Handle)
+{
+    AcpiOsSignalSemaphore (Handle, 1);
+}
+#endif
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsInstallInterruptHandler
+ *
+ * PARAMETERS:  InterruptNumber     - Level handler should respond to.
+ *              ServiceRoutine      - Address of the ACPI interrupt handler
+ *              Context             - User context
+ *
+ * RETURN:      Handle to the newly installed handler.
+ *
+ * DESCRIPTION: Install an interrupt handler. Used to install the ACPI
+ *              OS-independent handler.
+ *
+ *****************************************************************************/
+
+UINT32
+AcpiOsInstallInterruptHandler (
+    UINT32                  InterruptNumber,
+    ACPI_OSD_HANDLER        ServiceRoutine,
+    void                    *Context)
+{
+
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsRemoveInterruptHandler
+ *
+ * PARAMETERS:  Handle              - Returned when handler was installed
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Uninstalls an interrupt handler.
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsRemoveInterruptHandler (
+    UINT32                  InterruptNumber,
+    ACPI_OSD_HANDLER        ServiceRoutine)
+{
+
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsStall
+ *
+ * PARAMETERS:  Microseconds        - Time to stall
+ *
+ * RETURN:      None. Blocks until stall is completed.
+ *
+ * DESCRIPTION: Sleep at microsecond granularity
+ *
+ *****************************************************************************/
+
+void
+AcpiOsStall (
+    UINT32                  Microseconds)
+{
+
+    Sleep ((Microseconds / 1000) + 1);
+    return;
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsSleep
+ *
+ * PARAMETERS:  Milliseconds        - Time to sleep
+ *
+ * RETURN:      None. Blocks until sleep is completed.
+ *
+ * DESCRIPTION: Sleep at millisecond granularity
+ *
+ *****************************************************************************/
+
+void
+AcpiOsSleep (
+    UINT64                  Milliseconds)
+{
+
+    /* Add 10ms to account for clock tick granularity */
+
+    Sleep (((unsigned long) Milliseconds) + 10);
+    return;
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsReadPciConfiguration
+ *
+ * PARAMETERS:  PciId               - Seg/Bus/Dev
+ *              Register            - Device Register
+ *              Value               - Buffer where value is placed
+ *              Width               - Number of bits
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Read data from PCI configuration space
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsReadPciConfiguration (
+    ACPI_PCI_ID             *PciId,
+    UINT32                  Register,
+    UINT64                  *Value,
+    UINT32                  Width)
+{
+
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsWritePciConfiguration
+ *
+ * PARAMETERS:  PciId               - Seg/Bus/Dev
+ *              Register            - Device Register
+ *              Value               - Value to be written
+ *              Width               - Number of bits
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Write data to PCI configuration space
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsWritePciConfiguration (
+    ACPI_PCI_ID             *PciId,
+    UINT32                  Register,
+    UINT64                  Value,
+    UINT32                  Width)
+{
+
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsReadPort
+ *
+ * PARAMETERS:  Address             - Address of I/O port/register to read
+ *              Value               - Where value is placed
+ *              Width               - Number of bits
+ *
+ * RETURN:      Value read from port
+ *
+ * DESCRIPTION: Read data from an I/O port or register
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsReadPort (
+    ACPI_IO_ADDRESS         Address,
+    UINT32                  *Value,
+    UINT32                  Width)
+{
+    ACPI_FUNCTION_NAME (OsReadPort);
+
+
+    switch (Width)
+    {
+    case 8:
+        *Value = 0xFF;
+        break;
+
+    case 16:
+        *Value = 0xFFFF;
+        break;
+
+    case 32:
+        *Value = 0xFFFFFFFF;
+        break;
+
+    default:
+        ACPI_ERROR ((AE_INFO, "Bad width parameter: %X", Width));
+        return (AE_BAD_PARAMETER);
+    }
+
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsWritePort
+ *
+ * PARAMETERS:  Address             - Address of I/O port/register to write
+ *              Value               - Value to write
+ *              Width               - Number of bits
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Write data to an I/O port or register
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsWritePort (
+    ACPI_IO_ADDRESS         Address,
+    UINT32                  Value,
+    UINT32                  Width)
+{
+    ACPI_FUNCTION_NAME (OsWritePort);
+
+
+    if ((Width == 8) || (Width == 16) || (Width == 32))
+    {
+        return (AE_OK);
+    }
+
+    ACPI_ERROR ((AE_INFO, "Bad width parameter: %X", Width));
+    return (AE_BAD_PARAMETER);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsReadMemory
+ *
+ * PARAMETERS:  Address             - Physical Memory Address to read
+ *              Value               - Where value is placed
+ *              Width               - Number of bits (8,16,32, or 64)
+ *
+ * RETURN:      Value read from physical memory address. Always returned
+ *              as a 64-bit integer, regardless of the read width.
+ *
+ * DESCRIPTION: Read data from a physical memory address
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsReadMemory (
+    ACPI_PHYSICAL_ADDRESS   Address,
+    UINT64                  *Value,
+    UINT32                  Width)
+{
+
+    switch (Width)
+    {
+    case 8:
+    case 16:
+    case 32:
+    case 64:
+        *Value = 0;
+        break;
+
+    default:
+        return (AE_BAD_PARAMETER);
+        break;
+    }
+
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsWriteMemory
+ *
+ * PARAMETERS:  Address             - Physical Memory Address to write
+ *              Value               - Value to write
+ *              Width               - Number of bits (8,16,32, or 64)
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Write data to a physical memory address
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsWriteMemory (
+    ACPI_PHYSICAL_ADDRESS   Address,
+    UINT64                  Value,
+    UINT32                  Width)
+{
+
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsSignal
+ *
+ * PARAMETERS:  Function            - ACPI CA signal function code
+ *              Info                - Pointer to function-dependent structure
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Miscellaneous functions. Example implementation only.
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsSignal (
+    UINT32                  Function,
+    void                    *Info)
+{
+
+    switch (Function)
+    {
+    case ACPI_SIGNAL_FATAL:
+        break;
+
+    case ACPI_SIGNAL_BREAKPOINT:
+        break;
+
+    default:
+        break;
+    }
+
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    Local cache interfaces
+ *
+ * DESCRIPTION: Implements cache interfaces via malloc/free for testing
+ *              purposes only.
+ *
+ *****************************************************************************/
+
+#ifndef ACPI_USE_LOCAL_CACHE
+
+ACPI_STATUS
+AcpiOsCreateCache (
+    char                    *CacheName,
+    UINT16                  ObjectSize,
+    UINT16                  MaxDepth,
+    ACPI_CACHE_T            **ReturnCache)
+{
+    ACPI_MEMORY_LIST        *NewCache;
+
+
+    NewCache = malloc (sizeof (ACPI_MEMORY_LIST));
+    if (!NewCache)
+    {
+        return (AE_NO_MEMORY);
+    }
+
+    memset (NewCache, 0, sizeof (ACPI_MEMORY_LIST));
+    NewCache->LinkOffset = 8;
+    NewCache->ListName = CacheName;
+    NewCache->ObjectSize = ObjectSize;
+    NewCache->MaxDepth = MaxDepth;
+
+    *ReturnCache = (ACPI_CACHE_T) NewCache;
+    return (AE_OK);
+}
+
+ACPI_STATUS
+AcpiOsDeleteCache (
+    ACPI_CACHE_T            *Cache)
+{
+    free (Cache);
+    return (AE_OK);
+}
+
+ACPI_STATUS
+AcpiOsPurgeCache (
+    ACPI_CACHE_T            *Cache)
+{
+    return (AE_OK);
+}
+
+void *
+AcpiOsAcquireObject (
+    ACPI_CACHE_T            *Cache)
+{
+    void                    *NewObject;
+
+    NewObject = malloc (((ACPI_MEMORY_LIST *) Cache)->ObjectSize);
+    memset (NewObject, 0, ((ACPI_MEMORY_LIST *) Cache)->ObjectSize);
+
+    return (NewObject);
+}
+
+ACPI_STATUS
+AcpiOsReleaseObject (
+    ACPI_CACHE_T            *Cache,
+    void                    *Object)
+{
+    free (Object);
+    return (AE_OK);
+}
+
+#endif /* ACPI_USE_LOCAL_CACHE */
+
+
+/* Optional multi-thread support */
+
+#ifndef ACPI_SINGLE_THREADED
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsGetThreadId
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Id of the running thread
+ *
+ * DESCRIPTION: Get the Id of the current (running) thread
+ *
+ *****************************************************************************/
+
+ACPI_THREAD_ID
+AcpiOsGetThreadId (
+    void)
+{
+    DWORD                   ThreadId;
+
+    /* Ensure ID is never 0 */
+
+    ThreadId = GetCurrentThreadId ();
+    return ((ACPI_THREAD_ID) (ThreadId + 1));
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiOsExecute
+ *
+ * PARAMETERS:  Type                - Type of execution
+ *              Function            - Address of the function to execute
+ *              Context             - Passed as a parameter to the function
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Execute a new thread
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiOsExecute (
+    ACPI_EXECUTE_TYPE       Type,
+    ACPI_OSD_EXEC_CALLBACK  Function,
+    void                    *Context)
+{
+
+    _beginthread (Function, (unsigned) 0, Context);
+    return (0);
+}
+
+#endif /* ACPI_SINGLE_THREADED */
+