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