vendor/acpica/20100528

1 files changed, 512 insertions, 0 deletions

diff --git a/compiler/dtio.c b/compiler/dtio.c
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index 000000000000..469cea60917d
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+++ b/compiler/dtio.c
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+/******************************************************************************
+ *
+ * Module Name: dtio.c - File I/O support for data table compiler
+ *
+ *****************************************************************************/
+
+/******************************************************************************
+ *
+ * 1. Copyright Notice
+ *
+ * Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp.
+ * All rights reserved.
+ *
+ * 2. License
+ *
+ * 2.1. This is your license from Intel Corp. under its intellectual property
+ * rights.  You may have additional license terms from the party that provided
+ * you this software, covering your right to use that party's intellectual
+ * property rights.
+ *
+ * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
+ * copy of the source code appearing in this file ("Covered Code") an
+ * irrevocable, perpetual, worldwide license under Intel's copyrights in the
+ * base code distributed originally by Intel ("Original Intel Code") to copy,
+ * make derivatives, distribute, use and display any portion of the Covered
+ * Code in any form, with the right to sublicense such rights; and
+ *
+ * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
+ * license (with the right to sublicense), under only those claims of Intel
+ * patents that are infringed by the Original Intel Code, to make, use, sell,
+ * offer to sell, and import the Covered Code and derivative works thereof
+ * solely to the minimum extent necessary to exercise the above copyright
+ * license, and in no event shall the patent license extend to any additions
+ * to or modifications of the Original Intel Code.  No other license or right
+ * is granted directly or by implication, estoppel or otherwise;
+ *
+ * The above copyright and patent license is granted only if the following
+ * conditions are met:
+ *
+ * 3. Conditions
+ *
+ * 3.1. Redistribution of Source with Rights to Further Distribute Source.
+ * Redistribution of source code of any substantial portion of the Covered
+ * Code or modification with rights to further distribute source must include
+ * the above Copyright Notice, the above License, this list of Conditions,
+ * and the following Disclaimer and Export Compliance provision.  In addition,
+ * Licensee must cause all Covered Code to which Licensee contributes to
+ * contain a file documenting the changes Licensee made to create that Covered
+ * Code and the date of any change.  Licensee must include in that file the
+ * documentation of any changes made by any predecessor Licensee.  Licensee
+ * must include a prominent statement that the modification is derived,
+ * directly or indirectly, from Original Intel Code.
+ *
+ * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
+ * Redistribution of source code of any substantial portion of the Covered
+ * Code or modification without rights to further distribute source must
+ * include the following Disclaimer and Export Compliance provision in the
+ * documentation and/or other materials provided with distribution.  In
+ * addition, Licensee may not authorize further sublicense of source of any
+ * portion of the Covered Code, and must include terms to the effect that the
+ * license from Licensee to its licensee is limited to the intellectual
+ * property embodied in the software Licensee provides to its licensee, and
+ * not to intellectual property embodied in modifications its licensee may
+ * make.
+ *
+ * 3.3. Redistribution of Executable. Redistribution in executable form of any
+ * substantial portion of the Covered Code or modification must reproduce the
+ * above Copyright Notice, and the following Disclaimer and Export Compliance
+ * provision in the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * 3.4. Intel retains all right, title, and interest in and to the Original
+ * Intel Code.
+ *
+ * 3.5. Neither the name Intel nor any other trademark owned or controlled by
+ * Intel shall be used in advertising or otherwise to promote the sale, use or
+ * other dealings in products derived from or relating to the Covered Code
+ * without prior written authorization from Intel.
+ *
+ * 4. Disclaimer and Export Compliance
+ *
+ * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
+ * HERE.  ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
+ * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT,  ASSISTANCE,
+ * INSTALLATION, TRAINING OR OTHER SERVICES.  INTEL WILL NOT PROVIDE ANY
+ * UPDATES, ENHANCEMENTS OR EXTENSIONS.  INTEL SPECIFICALLY DISCLAIMS ANY
+ * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
+ * PARTICULAR PURPOSE.
+ *
+ * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
+ * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
+ * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
+ * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
+ * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
+ * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.  THESE LIMITATIONS
+ * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
+ * LIMITED REMEDY.
+ *
+ * 4.3. Licensee shall not export, either directly or indirectly, any of this
+ * software or system incorporating such software without first obtaining any
+ * required license or other approval from the U. S. Department of Commerce or
+ * any other agency or department of the United States Government.  In the
+ * event Licensee exports any such software from the United States or
+ * re-exports any such software from a foreign destination, Licensee shall
+ * ensure that the distribution and export/re-export of the software is in
+ * compliance with all laws, regulations, orders, or other restrictions of the
+ * U.S. Export Administration Regulations. Licensee agrees that neither it nor
+ * any of its subsidiaries will export/re-export any technical data, process,
+ * software, or service, directly or indirectly, to any country for which the
+ * United States government or any agency thereof requires an export license,
+ * other governmental approval, or letter of assurance, without first obtaining
+ * such license, approval or letter.
+ *
+ *****************************************************************************/
+
+#define __DTIO_C__
+
+#include "aslcompiler.h"
+#include "dtcompiler.h"
+
+#define _COMPONENT          DT_COMPILER
+        ACPI_MODULE_NAME    ("dtio")
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    DtIsComment
+ *
+ * PARAMETERS:  Line                - Current source code line
+ *
+ * RETURN:      TRUE if comment, FALSE otherwise
+ *
+ * DESCRIPTION: Detect a comment in the source module
+ *
+ *****************************************************************************/
+
+/* TBD: Temporary: very simple code to detect comments */
+
+static int
+DtIsComment(
+    char                    *Line)
+{
+
+    if (!ACPI_STRNCMP (Line, "/*", 2) ||
+        !ACPI_STRNCMP (Line, " *", 2))
+    {
+        return 1;
+    }
+
+    return 0;
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    DtTrim
+ *
+ * PARAMETERS:  String              - Current source code line to trim
+ *
+ * RETURN:      Trimmed line. Must be freed by caller.
+ *
+ * DESCRIPTION: Trim left and right spaces
+ *
+ *****************************************************************************/
+
+static char *
+DtTrim (
+    char                    *String)
+{
+    char                    *Start;
+    char                    *End;
+    char                    *ReturnString;
+    ACPI_SIZE               Length;
+
+
+    /* Skip lines that start with a space */
+
+    if (!ACPI_STRCMP (String, " "))
+    {
+        ReturnString = UtLocalCalloc (1);
+        return (ReturnString);
+    }
+
+    /* Setup pointers to start and end of input string */
+
+    Start = String;
+    End = String + ACPI_STRLEN (String) - 1;
+
+    /* Find first non-whitespace character */
+
+    while ((Start <= End) && ((*Start == ' ') || (*Start == '\t')))
+    {
+        Start++;
+    }
+
+    /* Find last non-space character */
+
+    while (End >= Start)
+    {
+        if (*End == '\r' || *End == '\n')
+        {
+            End--;
+            continue;
+        }
+
+        if (*End != ' ')
+        {
+            break;
+        }
+
+        End--;
+    }
+
+    /* Remove any quotes around the string */
+
+    if (*Start == '\"')
+    {
+        Start++;
+    }
+    if (*End == '\"')
+    {
+        End--;
+    }
+
+    /* Create the trimmed return string */
+
+    Length = ACPI_PTR_DIFF (End, Start) + 1;
+    ReturnString = UtLocalCalloc (Length + 1);
+    if (ACPI_STRLEN (Start))
+    {
+        ACPI_STRNCPY (ReturnString, Start, Length);
+    }
+
+    ReturnString[Length] = 0;
+    return (ReturnString);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    DtLinkField
+ *
+ * PARAMETERS:  Field               - New field object to link
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Link one field name and value to the list
+ *
+ *****************************************************************************/
+
+static void
+DtLinkField (
+    DT_FIELD                *Field)
+{
+    DT_FIELD                *Prev;
+    DT_FIELD                *Next;
+
+
+    Prev = Next = Gbl_FieldList;
+
+    while (Next)
+    {
+        Prev = Next;
+        Next = Next->Next;
+    }
+
+    if (Prev)
+    {
+        Prev->Next = Field;
+    }
+    else
+    {
+        Gbl_FieldList = Field;
+    }
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    DtParseLine
+ *
+ * PARAMETERS:  LineBuffer          - Current source code line
+ *              Line                - Current line number in the source
+ *              Offset              - Current byte offset of the line
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Parse one source line
+ *
+ *****************************************************************************/
+
+static void
+DtParseLine (
+    char                    *LineBuffer,
+    UINT32                  Line,
+    UINT32                  Offset)
+{
+    char                    *Start;
+    char                    *End;
+    char                    *TmpName;
+    char                    *TmpValue;
+    char                    *Name;
+    char                    *Value;
+    char                    *Colon;
+    UINT32                  Length;
+    DT_FIELD                *Field;
+    UINT32                  Column;
+    UINT32                  NameColumn;
+
+
+    if (!LineBuffer || DtIsComment (LineBuffer))
+    {
+        return;
+    }
+
+    Colon = strchr (LineBuffer, ':');
+    if (!Colon || *(Colon - 1) != ' ')
+    {
+        return;
+    }
+
+    Start = LineBuffer;
+    End = Colon;
+
+    while (Start < Colon)
+    {
+        if (*Start == ' ')
+        {
+            Start++;
+            continue;
+        }
+
+        /* Found left bracket, go to the right bracket */
+
+        if (*Start == '[')
+        {
+            while (Start < Colon && *Start != ']')
+            {
+                Start++;
+            }
+
+            if (Start == Colon)
+            {
+                MYDEBUG ("ERROR: right bracket reaches colon position\n");
+                break;
+            }
+
+            Start++;
+            continue;
+        }
+
+        break;
+    }
+
+    /*
+     * There are two column values. One for the field name,
+     * and one for the field value.
+     */
+    Column = ACPI_PTR_DIFF (Colon, LineBuffer) + 3;
+    NameColumn = ACPI_PTR_DIFF (Start, LineBuffer) + 1;
+
+    Length = ACPI_PTR_DIFF (End, Start);
+
+    TmpName = UtLocalCalloc (Length + 1);
+    ACPI_STRNCPY (TmpName, Start, Length);
+    Name = DtTrim (TmpName);
+    ACPI_FREE (TmpName);
+
+    Start = End = (Colon + 1);
+
+    while (*End)
+    {
+        /* Found left quotation, go to the right quotation and break */
+
+        if (*End == '"')
+        {
+            End++;
+            while (*End && *End != '"')
+            {
+                End++;
+            }
+
+            End++;
+            break;
+        }
+
+        if (*End == '(' ||
+            *End == '<' ||
+            *End == '/')
+        {
+            break;
+        }
+
+        End++;
+    }
+
+    Length = ACPI_PTR_DIFF (End, Start);
+    TmpValue = UtLocalCalloc (Length + 1);
+    ACPI_STRNCPY (TmpValue, Start, Length);
+    Value = DtTrim (TmpValue);
+    ACPI_FREE (TmpValue);
+
+    if (Name && Value)
+    {
+        Field = UtLocalCalloc (sizeof (DT_FIELD));
+        Field->Name = Name;
+        Field->Value = Value;
+        Field->Line = Line;
+        Field->ByteOffset = Offset;
+        Field->NameColumn = NameColumn;
+        Field->Column = Column;
+
+        DtLinkField (Field);
+    }
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    DtScanFile
+ *
+ * PARAMETERS:  Handle              - Open file handle for the source file
+ *
+ * RETURN:      Pointer to start of the constructed parse tree.
+ *
+ * DESCRIPTION: Scan source file, link all field name and value
+ *              to the global parse tree: Gbl_FieldList
+ *
+ *****************************************************************************/
+
+DT_FIELD *
+DtScanFile (
+    FILE                    *Handle)
+{
+    UINT32                  Line = 0;
+    UINT32                  Offset = 0;
+
+
+    /* Get the file size */
+
+    Gbl_InputByteCount = DtGetFileSize (Handle);
+
+    /* Scan line-by-line */
+
+    while (fgets (Gbl_CurrentLineBuffer, ASL_LINE_BUFFER_SIZE, Handle))
+    {
+        Line++;
+        Gbl_CurrentLineNumber++;
+        DtParseLine (Gbl_CurrentLineBuffer, Line, Offset);
+
+        Offset = (UINT32) ftell (Handle);
+    }
+
+    return (Gbl_FieldList);
+}
+
+
+/*
+ * Output functions
+ */
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    DtWriteBinary
+ *
+ * PARAMETERS:  DT_WALK_CALLBACK
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Write one subtable of a binary ACPI table
+ *
+ *****************************************************************************/
+
+static void
+DtWriteBinary (
+    DT_SUBTABLE             *Subtable,
+    void                    *Context,
+    void                    *ReturnValue)
+{
+
+    FlWriteFile (ASL_FILE_AML_OUTPUT, Subtable->Buffer, Subtable->Length);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    DtOutputBinary
+ *
+ * PARAMETERS:
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Write entire binary ACPI table (result of compilation)
+ *
+ *****************************************************************************/
+
+void
+DtOutputBinary (
+    DT_SUBTABLE             *RootTable)
+{
+
+    if (!RootTable)
+    {
+        return;
+    }
+
+    /* Walk the entire parse tree, emitting the binary data */
+
+    DtWalkTableTree (RootTable, DtWriteBinary, NULL, NULL);
+    Gbl_TableLength = DtGetFileSize (Gbl_Files[ASL_FILE_AML_OUTPUT].Handle);
+}