/******************************************************************************
 *
 * Module Name: aslmain - compiler main and utilities
 *
 *****************************************************************************/

/*
 * Copyright (C) 2000 - 2011, Intel Corp.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    substantially similar to the "NO WARRANTY" disclaimer below
 *    ("Disclaimer") and any redistribution must be conditioned upon
 *    including a substantially similar Disclaimer requirement for further
 *    binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 */


#define _DECLARE_GLOBALS

#include "aslcompiler.h"
#include "acapps.h"
#include "acdisasm.h"

#ifdef _DEBUG
#include <crtdbg.h>
#endif

#define _COMPONENT          ACPI_COMPILER
        ACPI_MODULE_NAME    ("aslmain")

/* Local prototypes */

static void
Options (
    void);

static void
HelpMessage (
    void);

static void
Usage (
    void);

static void
AslInitialize (
    void);

static int
AslCommandLine (
    int                     argc,
    char                    **argv);

static int
AslDoOptions (
    int                     argc,
    char                    **argv,
    BOOLEAN                 IsResponseFile);

static void
AslMergeOptionTokens (
    char                    *InBuffer,
    char                    *OutBuffer);

static int
AslDoResponseFile (
    char                    *Filename);


#define ASL_TOKEN_SEPARATORS    " \t\n"
#define ASL_SUPPORTED_OPTIONS   "@:2b:c:d^e:fgh^i^I:l^no:p:r:s:t:T:v:w:x:z"


/*******************************************************************************
 *
 * FUNCTION:    Options
 *
 * PARAMETERS:  None
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display option help message
 *
 ******************************************************************************/

static void
Options (
    void)
{

    printf ("Global:\n");
    printf ("  -@<file>       Specify command file\n");
    printf ("  -I<dir>        Specify additional include directory\n");

    printf ("\nGeneral Output:\n");
    printf ("  -p<prefix>     Specify path/filename prefix for all output files\n");
    printf ("  -va            Disable all errors and warnings (summary only)\n");
    printf ("  -vi            Less verbose errors and warnings for use with IDEs\n");
    printf ("  -vo            Enable optimization comments\n");
    printf ("  -vr            Disable remarks\n");
    printf ("  -vs            Disable signon\n");
    printf ("  -w<1|2|3>      Set warning reporting level\n");

    printf ("\nAML Output Files:\n");
    printf ("  -s<a|c>        Create AML in assembler or C source file (*.asm or *.c)\n");
    printf ("  -i<a|c>        Create assembler or C include file (*.inc or *.h)\n");
    printf ("  -t<a|c|s>      Create AML in assembler, C, or ASL hex table (*.hex)\n");

    printf ("\nAML Code Generation:\n");
    printf ("  -oa            Disable all optimizations (compatibility mode)\n");
    printf ("  -of            Disable constant folding\n");
    printf ("  -oi            Disable integer optimization to Zero/One/Ones\n");
    printf ("  -on            Disable named reference string optimization\n");
    printf ("  -cr            Disable Resource Descriptor error checking\n");
    printf ("  -r<Revision>   Override table header Revision (1-255)\n");

    printf ("\nASL Listing Files:\n");
    printf ("  -l             Create mixed listing file (ASL source and AML) (*.lst)\n");
    printf ("  -ln            Create namespace file (*.nsp)\n");
    printf ("  -ls            Create combined source file (expanded includes) (*.src)\n");

    printf ("\nACPI Data Tables:\n");
    printf ("  -T <Sig>       Create table template file for <Sig> (or \"ALL\")\n");
    printf ("  -vt            Create verbose templates (full disassembly)\n");

    printf ("\nAML Disassembler:\n");
    printf ("  -d  [file]     Disassemble or decode binary ACPI table to file (*.dsl)\n");
    printf ("  -da [f1,f2]    Disassemble multiple tables from single namespace\n");
    printf ("  -dc [file]     Disassemble AML and immediately compile it\n");
    printf ("                 (Obtain DSDT from current system if no input file)\n");
    printf ("  -e  [f1,f2]    Include ACPI table(s) for external symbol resolution\n");
    printf ("  -2             Emit ACPI 2.0 compatible ASL code\n");
    printf ("  -g             Get ACPI tables and write to files (*.dat)\n");

    printf ("\nHelp:\n");
    printf ("  -h             Additional help and compiler debug options\n");
    printf ("  -hc            Display operators allowed in constant expressions\n");
    printf ("  -hr            Display ACPI reserved method names\n");
    printf ("  -ht            Display currently supported ACPI table names\n");
}


/*******************************************************************************
 *
 * FUNCTION:    HelpMessage
 *
 * PARAMETERS:  None
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display help message
 *
 ******************************************************************************/

static void
HelpMessage (
    void)
{

    printf ("AML output filename generation:\n");
    printf ("  Output filenames are generated by appending an extension to a common\n");
    printf ("  filename prefix.  The filename prefix is obtained via one of the\n");
    printf ("  following methods (in priority order):\n");
    printf ("    1) The -p option specifies the prefix\n");
    printf ("    2) The prefix of the AMLFileName in the ASL Definition Block\n");
    printf ("    3) The prefix of the input filename\n");
    printf ("\n");

    Options ();

    printf ("\nCompiler/Disassembler Debug Options:\n");
    printf ("  -b<p|t|b>      Create compiler debug/trace file (*.txt)\n");
    printf ("                   Types: Parse/Tree/Both\n");
    printf ("  -f             Ignore errors, force creation of AML output file(s)\n");
    printf ("  -n             Parse only, no output generation\n");
    printf ("  -ot            Display compile times\n");
    printf ("  -x<level>      Set debug level for trace output\n");
    printf ("  -z             Do not insert new compiler ID for DataTables\n");
}


/*******************************************************************************
 *
 * FUNCTION:    Usage
 *
 * PARAMETERS:  None
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display usage and option message
 *
 ******************************************************************************/

static void
Usage (
    void)
{

    printf ("%s\n", ASL_COMPLIANCE);
    printf ("Usage:    %s [Options] [Files]\n\n", ASL_INVOCATION_NAME);
    Options ();
}


/*******************************************************************************
 *
 * FUNCTION:    AslInitialize
 *
 * PARAMETERS:  None
 *
 * RETURN:      None
 *
 * DESCRIPTION: Initialize compiler globals
 *
 ******************************************************************************/

static void
AslInitialize (
    void)
{
    UINT32                  i;


#ifdef _DEBUG
    _CrtSetDbgFlag (_CRTDBG_CHECK_ALWAYS_DF | _CrtSetDbgFlag(0));
#endif

    AcpiDbgLevel = 0;

    for (i = 0; i < ASL_NUM_FILES; i++)
    {
        Gbl_Files[i].Handle = NULL;
        Gbl_Files[i].Filename = NULL;
    }

    Gbl_Files[ASL_FILE_STDOUT].Handle   = stdout;
    Gbl_Files[ASL_FILE_STDOUT].Filename = "STDOUT";

    Gbl_Files[ASL_FILE_STDERR].Handle   = stderr;
    Gbl_Files[ASL_FILE_STDERR].Filename = "STDERR";
}


/*******************************************************************************
 *
 * FUNCTION:    AslMergeOptionTokens
 *
 * PARAMETERS:  InBuffer            - Input containing an option string
 *              OutBuffer           - Merged output buffer
 *
 * RETURN:      None
 *
 * DESCRIPTION: Remove all whitespace from an option string.
 *
 ******************************************************************************/

static void
AslMergeOptionTokens (
    char                    *InBuffer,
    char                    *OutBuffer)
{
    char                    *Token;


    *OutBuffer = 0;

    Token = strtok (InBuffer, ASL_TOKEN_SEPARATORS);
    while (Token)
    {
        strcat (OutBuffer, Token);
        Token = strtok (NULL, ASL_TOKEN_SEPARATORS);
    }
}


/*******************************************************************************
 *
 * FUNCTION:    AslDoResponseFile
 *
 * PARAMETERS:  Filename        - Name of the response file
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Open a response file and process all options within.
 *
 ******************************************************************************/

static int
AslDoResponseFile (
    char                    *Filename)
{
    char                    *argv = StringBuffer2;
    FILE                    *ResponseFile;
    int                     OptStatus = 0;
    int                     Opterr;
    int                     Optind;


    ResponseFile = fopen (Filename, "r");
    if (!ResponseFile)
    {
        printf ("Could not open command file %s, %s\n",
            Filename, strerror (errno));
        return -1;
    }

    /* Must save the current GetOpt globals */

    Opterr = AcpiGbl_Opterr;
    Optind = AcpiGbl_Optind;

    /*
     * Process all lines in the response file. There must be one complete
     * option per line
     */
    while (fgets (StringBuffer, ASL_MSG_BUFFER_SIZE, ResponseFile))
    {
        /* Compress all tokens, allowing us to use a single argv entry */

        AslMergeOptionTokens (StringBuffer, StringBuffer2);

        /* Process the option */

        AcpiGbl_Opterr = 0;
        AcpiGbl_Optind = 0;

        OptStatus = AslDoOptions (1, &argv, TRUE);
        if (OptStatus)
        {
            printf ("Invalid option in command file %s: %s\n",
                Filename, StringBuffer);
            break;
        }
    }

    /* Restore the GetOpt globals */

    AcpiGbl_Opterr = Opterr;
    AcpiGbl_Optind = Optind;

    fclose (ResponseFile);
    return (OptStatus);
}


/*******************************************************************************
 *
 * FUNCTION:    AslDoOptions
 *
 * PARAMETERS:  argc/argv           - Standard argc/argv
 *              IsResponseFile      - TRUE if executing a response file.
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Command line option processing
 *
 ******************************************************************************/

static int
AslDoOptions (
    int                     argc,
    char                    **argv,
    BOOLEAN                 IsResponseFile)
{
    int                     j;
    ACPI_STATUS             Status;


    /* Get the command line options */

    while ((j = AcpiGetopt (argc, argv, ASL_SUPPORTED_OPTIONS)) != EOF) switch (j)
    {
    case '@':   /* Begin a response file */

        if (IsResponseFile)
        {
            printf ("Nested command files are not supported\n");
            return -1;
        }

        if (AslDoResponseFile (AcpiGbl_Optarg))
        {
            return -1;
        }
        break;


    case '2':

        Gbl_Acpi2 = TRUE;
        break;


    case 'b':

        switch (AcpiGbl_Optarg[0])
        {
        case 'b':
            AslCompilerdebug = 1; /* same as yydebug */
            break;

        case 'p':
            AslCompilerdebug = 1; /* same as yydebug */
            break;

        case 't':
            break;

        default:
            printf ("Unknown option: -b%s\n", AcpiGbl_Optarg);
            return (-1);
        }

        /* Produce debug output file */

        Gbl_DebugFlag = TRUE;
        break;


    case 'c':
        switch (AcpiGbl_Optarg[0])
        {
        case 'r':
            Gbl_NoResourceChecking = TRUE;
            break;

        default:
            printf ("Unknown option: -c%s\n", AcpiGbl_Optarg);
            return (-1);
        }
        break;


    case 'd':
        switch (AcpiGbl_Optarg[0])
        {
        case '^':
            Gbl_DoCompile = FALSE;
            break;

        case 'a':
            Gbl_DoCompile = FALSE;
            Gbl_DisassembleAll = TRUE;
            break;

        case 'c':
            break;

        default:
            printf ("Unknown option: -d%s\n", AcpiGbl_Optarg);
            return (-1);
        }

        Gbl_DisasmFlag = TRUE;
        break;


    case 'e':
        Status = AcpiDmAddToExternalFileList (AcpiGbl_Optarg);
        if (ACPI_FAILURE (Status))
        {
            printf ("Could not add %s to external list\n", AcpiGbl_Optarg);
            return (-1);
        }
        break;


    case 'f':

        /* Ignore errors and force creation of aml file */

        Gbl_IgnoreErrors = TRUE;
        break;


    case 'g':

        /* Get all ACPI tables */

        Gbl_GetAllTables = TRUE;
        Gbl_DoCompile = FALSE;
        break;


    case 'h':

        switch (AcpiGbl_Optarg[0])
        {
        case '^':
            HelpMessage ();
            exit (0);

        case 'c':
            UtDisplayConstantOpcodes ();
            exit (0);

        case 'r':
            /* reserved names */

            ApDisplayReservedNames ();
            exit (0);

        case 't':
            UtDisplaySupportedTables ();
            exit (0);

        default:
            printf ("Unknown option: -h%s\n", AcpiGbl_Optarg);
            return (-1);
        }


    case 'I': /* Add an include file search directory */

        FlAddIncludeDirectory (AcpiGbl_Optarg);
        break;


    case 'i':

        switch (AcpiGbl_Optarg[0])
        {
        case 'a':

            /* Produce assembly code include file */

            Gbl_AsmIncludeOutputFlag = TRUE;
            break;

        case 'c':

            /* Produce C include file */

            Gbl_C_IncludeOutputFlag = TRUE;
            break;

        default:
            printf ("Unknown option: -s%s\n", AcpiGbl_Optarg);
            return (-1);
        }
        break;


    case 'l':

        switch (AcpiGbl_Optarg[0])
        {
        case '^':
            /* Produce listing file (Mixed source/aml) */

            Gbl_ListingFlag = TRUE;
            break;

        case 'n':
            /* Produce namespace file */

            Gbl_NsOutputFlag = TRUE;
            break;

        case 's':
            /* Produce combined source file */

            Gbl_SourceOutputFlag = TRUE;
            break;

        default:
            printf ("Unknown option: -l%s\n", AcpiGbl_Optarg);
            return (-1);
        }
        break;


    case 'o':

        switch (AcpiGbl_Optarg[0])
        {
        case 'a':

            /* Disable all optimizations */

            Gbl_FoldConstants = FALSE;
            Gbl_IntegerOptimizationFlag = FALSE;
            Gbl_ReferenceOptimizationFlag = FALSE;
            break;

        case 'f':

            /* Disable folding on "normal" expressions */

            Gbl_FoldConstants = FALSE;
            break;

        case 'i':

            /* Disable integer optimization to constants */

            Gbl_IntegerOptimizationFlag = FALSE;
            break;

        case 'n':

            /* Disable named reference optimization */

            Gbl_ReferenceOptimizationFlag = FALSE;
            break;

        case 't':

            /* Display compile time(s) */

            Gbl_CompileTimesFlag = TRUE;
            break;

        default:
            printf ("Unknown option: -c%s\n", AcpiGbl_Optarg);
            return (-1);
        }
        break;


    case 'n':

        /* Parse only */

        Gbl_ParseOnlyFlag = TRUE;
        break;


    case 'p':

        /* Override default AML output filename */

        Gbl_OutputFilenamePrefix = AcpiGbl_Optarg;
        Gbl_UseDefaultAmlFilename = FALSE;
        break;


    case 'r':
        Gbl_RevisionOverride = (UINT8) strtoul (AcpiGbl_Optarg, NULL, 0);
        break;


    case 's':

        switch (AcpiGbl_Optarg[0])
        {
        case 'a':

            /* Produce assembly code output file */

            Gbl_AsmOutputFlag = TRUE;
            break;

        case 'c':

            /* Produce C hex output file */

            Gbl_C_OutputFlag = TRUE;
            break;

        default:
            printf ("Unknown option: -s%s\n", AcpiGbl_Optarg);
            return (-1);
        }
        break;


    case 't':

        /* Produce hex table output file */

        switch (AcpiGbl_Optarg[0])
        {
        case 'a':
            Gbl_HexOutputFlag = HEX_OUTPUT_ASM;
            break;

        case 'c':
            Gbl_HexOutputFlag = HEX_OUTPUT_C;
            break;

        case 's':
            Gbl_HexOutputFlag = HEX_OUTPUT_ASL;
            break;

        default:
            printf ("Unknown option: -t%s\n", AcpiGbl_Optarg);
            return (-1);
        }
        break;


    case 'T':
        Gbl_DoTemplates = TRUE;
        Gbl_TemplateSignature = AcpiGbl_Optarg;
        break;


    case 'v':

        switch (AcpiGbl_Optarg[0])
        {
        case 'a':
            /* Disable All error/warning messages */

            Gbl_NoErrors = TRUE;
            break;

        case 'i':
            /* Less verbose error messages */

            Gbl_VerboseErrors = FALSE;
            break;

        case 'o':
            Gbl_DisplayOptimizations = TRUE;
            break;

        case 'r':
            Gbl_DisplayRemarks = FALSE;
            break;

        case 's':
            Gbl_DoSignon = FALSE;
            break;

        case 't':
            Gbl_VerboseTemplates = TRUE;
            break;

        default:
            printf ("Unknown option: -v%s\n", AcpiGbl_Optarg);
            return (-1);
        }
        break;


    case 'w': /* Set warning levels */

        switch (AcpiGbl_Optarg[0])
        {
        case '1':
            Gbl_WarningLevel = ASL_WARNING;
            break;

        case '2':
            Gbl_WarningLevel = ASL_WARNING2;
            break;

        case '3':
            Gbl_WarningLevel = ASL_WARNING3;
            break;

        default:
            printf ("Unknown option: -w%s\n", AcpiGbl_Optarg);
            return (-1);
        }
        break;


    case 'x':

        AcpiDbgLevel = strtoul (AcpiGbl_Optarg, NULL, 16);
        break;


    case 'z':

        Gbl_UseOriginalCompilerId = TRUE;
        break;


    default:

        return (-1);
    }

    return (0);
}


/*******************************************************************************
 *
 * FUNCTION:    AslCommandLine
 *
 * PARAMETERS:  argc/argv
 *
 * RETURN:      Last argv index
 *
 * DESCRIPTION: Command line processing
 *
 ******************************************************************************/

static int
AslCommandLine (
    int                     argc,
    char                    **argv)
{
    int                     BadCommandLine = 0;
    ACPI_STATUS             Status;


    /* Minimum command line contains at least the command and an input file */

    if (argc < 2)
    {
        printf (ACPI_COMMON_SIGNON (ASL_COMPILER_NAME));
        Usage ();
        exit (1);
    }

    /* Process all command line options */

    BadCommandLine = AslDoOptions (argc, argv, FALSE);

    if (Gbl_DoTemplates)
    {
        Status = DtCreateTemplates (Gbl_TemplateSignature);
        if (ACPI_FAILURE (Status))
        {
            exit (-1);
        }
        exit (1);
    }

    /* Next parameter must be the input filename */

    if (!argv[AcpiGbl_Optind] &&
        !Gbl_DisasmFlag &&
        !Gbl_GetAllTables)
    {
        printf ("Missing input filename\n");
        BadCommandLine = TRUE;
    }

    if (Gbl_DoSignon)
    {
        printf (ACPI_COMMON_SIGNON (ASL_COMPILER_NAME));
    }

    /* Abort if anything went wrong on the command line */

    if (BadCommandLine)
    {
        printf ("\n");
        Usage ();
        exit (1);
    }

    return (AcpiGbl_Optind);
}


/*******************************************************************************
 *
 * FUNCTION:    main
 *
 * PARAMETERS:  Standard argc/argv
 *
 * RETURN:      Program termination code
 *
 * DESCRIPTION: C main routine for the Asl Compiler. Handle command line
 *              options and begin the compile for each file on the command line
 *
 ******************************************************************************/

int ACPI_SYSTEM_XFACE
main (
    int                     argc,
    char                    **argv)
{
    ACPI_STATUS             Status;
    int                     Index1;
    int                     Index2;


    AcpiGbl_ExternalFileList = NULL;

#ifdef _DEBUG
    _CrtSetDbgFlag (_CRTDBG_CHECK_ALWAYS_DF | _CRTDBG_LEAK_CHECK_DF |
                    _CrtSetDbgFlag(_CRTDBG_REPORT_FLAG));
#endif

    /* Init and command line */

    AslInitialize ();
    Index1 = Index2 = AslCommandLine (argc, argv);

    /* Options that have no additional parameters or pathnames */

    if (Gbl_GetAllTables)
    {
        Status = AslDoOneFile (NULL);
        if (ACPI_FAILURE (Status))
        {
            return (-1);
        }
        return (0);
    }

    if (Gbl_DisassembleAll)
    {
        while (argv[Index1])
        {
            Status = AslDoOnePathname (argv[Index1], AcpiDmAddToExternalFileList);
            if (ACPI_FAILURE (Status))
            {
                return (-1);
            }

            Index1++;
        }
    }

    /* Process each pathname/filename in the list, with possible wildcards */

    while (argv[Index2])
    {
        Status = AslDoOnePathname (argv[Index2], AslDoOneFile);
        if (ACPI_FAILURE (Status))
        {
            return (-1);
        }

        Index2++;
    }

    if (AcpiGbl_ExternalFileList)
    {
        AcpiDmClearExternalFileList();
    }

    return (0);
}