aslcompile.c

acpi tools for linux include acpiexec and acpixtract

/******************************************************************************
 *
 * Module Name: aslcompile - top level compile module
 *              $Revision: 1.99 $
 *
 *****************************************************************************/

/******************************************************************************
 *
 * 1. Copyright Notice
 *
 * Some or all of this work - Copyright (c) 1999 - 2008, 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.
 *
 *****************************************************************************/

#include <stdio.h>
#include <time.h>
#include "aslcompiler.h"

#define _COMPONENT          ACPI_COMPILER
        ACPI_MODULE_NAME    ("aslcompile")

/* Local prototypes */

static void
CmFlushSourceCode (
    void);

static ACPI_STATUS
FlCheckForAscii (
    ASL_FILE_INFO           *FileInfo);


/*******************************************************************************
 *
 * FUNCTION:    AslCompilerSignon
 *
 * PARAMETERS:  FileId      - ID of the output file
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display compiler signon
 *
 ******************************************************************************/

void
AslCompilerSignon (
    UINT32                  FileId)
{
    char                    *Prefix = "";


    /* Set line prefix depending on the destination file type */

    switch (FileId)
    {
    case ASL_FILE_ASM_SOURCE_OUTPUT:
    case ASL_FILE_ASM_INCLUDE_OUTPUT:

        Prefix = "; ";
        break;

    case ASL_FILE_HEX_OUTPUT:

        if (Gbl_HexOutputFlag == HEX_OUTPUT_ASM)
        {
            Prefix = "; ";
        }
        else if (Gbl_HexOutputFlag == HEX_OUTPUT_C)
        {
            FlPrintFile (ASL_FILE_HEX_OUTPUT, "/*\n");
            Prefix = " * ";
        }
        break;

    case ASL_FILE_C_SOURCE_OUTPUT:
    case ASL_FILE_C_INCLUDE_OUTPUT:

        Prefix = " * ";
        break;

    default:
        /* No other output types supported */
        break;
    }

    /*
     * Compiler signon with copyright
     */
    FlPrintFile (FileId,
        "%s\n%s%s\n%s",
        Prefix,
        Prefix, IntelAcpiCA,
        Prefix);

    /* Running compiler or disassembler? */

    if (Gbl_DisasmFlag)
    {
        FlPrintFile (FileId,
            "%s", DisassemblerId);
    }
    else
    {
        FlPrintFile (FileId,
            "%s", CompilerId);
    }

    /* Version, build date, copyright, compliance */

    FlPrintFile (FileId,
        " version %X [%s]\n%s%s\n%s%s\n%s\n",
        (UINT32) ACPI_CA_VERSION, __DATE__,
        Prefix, CompilerCopyright,
        Prefix, CompilerCompliance,
        Prefix);
}


/*******************************************************************************
 *
 * FUNCTION:    AslCompilerFileHeader
 *
 * PARAMETERS:  FileId      - ID of the output file
 *
 * RETURN:      None
 *
 * DESCRIPTION: Header used at the beginning of output files
 *
 ******************************************************************************/

void
AslCompilerFileHeader (
    UINT32                  FileId)
{
    struct tm               *NewTime;
    time_t                  Aclock;
    char                    *Prefix = "";


    /* Set line prefix depending on the destination file type */

    switch (FileId)
    {
    case ASL_FILE_ASM_SOURCE_OUTPUT:
    case ASL_FILE_ASM_INCLUDE_OUTPUT:

        Prefix = "; ";
        break;

    case ASL_FILE_HEX_OUTPUT:

        if (Gbl_HexOutputFlag == HEX_OUTPUT_ASM)
        {
            Prefix = "; ";
        }
        else if (Gbl_HexOutputFlag == HEX_OUTPUT_C)
        {
            Prefix = " * ";
        }
        break;

    case ASL_FILE_C_SOURCE_OUTPUT:
    case ASL_FILE_C_INCLUDE_OUTPUT:

        Prefix = " * ";
        break;

    default:
        /* No other output types supported */
        break;
    }

    /* Compilation header with timestamp */

    (void) time (&Aclock);
    NewTime = localtime (&Aclock);

    FlPrintFile (FileId,
        "%sCompilation of \"%s\" - %s%s\n",
        Prefix, Gbl_Files[ASL_FILE_INPUT].Filename, asctime (NewTime),
        Prefix);

    switch (FileId)
    {
    case ASL_FILE_C_SOURCE_OUTPUT:
    case ASL_FILE_C_INCLUDE_OUTPUT:
        FlPrintFile (FileId, " */\n");
        break;

    default:
        /* Nothing to do for other output types */
        break;
    }
}


/*******************************************************************************
 *
 * FUNCTION:    CmFlushSourceCode
 *
 * PARAMETERS:  None
 *
 * RETURN:      None
 *
 * DESCRIPTION: Read in any remaining source code after the parse tree
 *              has been constructed.
 *
 ******************************************************************************/

static void
CmFlushSourceCode (
    void)
{
    char                    Buffer;


    while (FlReadFile (ASL_FILE_INPUT, &Buffer, 1) != AE_ERROR)
    {
        InsertLineBuffer ((int) Buffer);
    }

    ResetCurrentLineBuffer ();
}


/*******************************************************************************
 *
 * FUNCTION:    FlConsume*
 *
 * PARAMETERS:  FileInfo        - Points to an open input file
 *
 * RETURN:      Number of lines consumed
 *
 * DESCRIPTION: Step over both types of comment during check for ascii chars
 *
 ******************************************************************************/

void
FlConsumeAnsiComment (
    ASL_FILE_INFO           *FileInfo,
    ASL_FILE_STATUS         *Status)
{
    UINT8                   Byte;
    BOOLEAN                 ClosingComment = FALSE;


    while (fread (&Byte, 1, 1, FileInfo->Handle))
    {
        /* Scan until comment close is found */

        if (ClosingComment)
        {
            if (Byte == '/')
            {
                return;
            }

            if (Byte != '*')
            {
                /* Reset */

                ClosingComment = FALSE;
            }
        }
        else if (Byte == '*')
        {
            ClosingComment = TRUE;
        }

        /* Maintain line count */

        if (Byte == 0x0A)
        {
            Status->Line++;
        }

        Status->Offset++;
    }
}


void
FlConsumeNewComment (
    ASL_FILE_INFO           *FileInfo,
    ASL_FILE_STATUS         *Status)
{
    UINT8                   Byte;


    while (fread (&Byte, 1, 1, FileInfo->Handle))
    {
        Status->Offset++;

        /* Comment ends at newline */

        if (Byte == 0x0A)
        {
            Status->Line++;
            return;
        }
    }
}


/*******************************************************************************
 *
 * FUNCTION:    FlCheckForAscii
 *
 * PARAMETERS:  FileInfo        - Points to an open input file
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Verify that the input file is entirely ASCII. Ignores characters
 *              within comments. Note: does not handle nested comments and does
 *              not handle comment delimiters within string literals. However,
 *              on the rare chance this happens and an invalid character is
 *              missed, the parser will catch the error by failing in some
 *              spectactular manner.
 *
 ******************************************************************************/

static ACPI_STATUS
FlCheckForAscii (
    ASL_FILE_INFO           *FileInfo)
{
    UINT8                   Byte;
    ACPI_SIZE               BadBytes = 0;
    BOOLEAN                 OpeningComment = FALSE;
    ASL_FILE_STATUS         Status;


    Status.Line = 1;
    Status.Offset = 0;

    /* Read the entire file */

    while (fread (&Byte, 1, 1, FileInfo->Handle))
    {
        /* Ignore comment fields (allow non-ascii within) */

        if (OpeningComment)
        {
            /* Check for second comment open delimiter */

            if (Byte == '*')
            {
                FlConsumeAnsiComment (FileInfo, &Status);
            }

            if (Byte == '/')
            {
                FlConsumeNewComment (FileInfo, &Status);
            }

            /* Reset */

            OpeningComment = FALSE;