/******************************************************************************
 *
 * Module Name: aslstartup - Compiler startup routines, called from main
 *
 *****************************************************************************/

/*
 * Copyright (C) 2000 - 2019, 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 "aslcompiler.h"
#include "actables.h"
#include "acdisasm.h"
#include "acapps.h"
#include "acconvert.h"

#define _COMPONENT          ACPI_COMPILER
        ACPI_MODULE_NAME    ("aslstartup")


/* Local prototypes */

static UINT8
AslDetectSourceFileType (
    ASL_FILE_INFO           *Info);


/* Globals */

static BOOLEAN          AslToFile = TRUE;


/*******************************************************************************
 *
 * FUNCTION:    AslInitializeGlobals
 *
 * PARAMETERS:  None
 *
 * RETURN:      None
 *
 * DESCRIPTION: Re-initialize globals needed to restart the compiler. This
 *              allows multiple files to be disassembled and/or compiled.
 *
 ******************************************************************************/

void
AslInitializeGlobals (
    void)
{
    UINT32                  i;


    /* Init compiler globals */

    AslGbl_SyntaxError = 0;
    AslGbl_CurrentColumn = 0;
    AslGbl_CurrentLineNumber = 1;
    AslGbl_LogicalLineNumber = 1;
    AslGbl_CurrentLineOffset = 0;
    AslGbl_InputFieldCount = 0;
    AslGbl_InputByteCount = 0;
    AslGbl_NsLookupCount = 0;
    AslGbl_LineBufPtr = AslGbl_CurrentLineBuffer;

    AslGbl_ErrorLog = NULL;
    AslGbl_NextError = NULL;
    AslGbl_Signature = NULL;
    AslGbl_FileType = 0;

    AslGbl_TotalExecutableOpcodes = 0;
    AslGbl_TotalNamedObjects = 0;
    AslGbl_TotalKeywords = 0;
    AslGbl_TotalParseNodes = 0;
    AslGbl_TotalMethods = 0;
    AslGbl_TotalAllocations = 0;
    AslGbl_TotalAllocated = 0;
    AslGbl_TotalFolds = 0;

    AslGbl_NextEvent = 0;
    for (i = 0; i < ASL_NUM_REPORT_LEVELS; i++)
    {
        AslGbl_ExceptionCount[i] = 0;
    }

    if (AcpiGbl_CaptureComments)
    {
        AslGbl_CommentState.SpacesBefore          = 0;
        AslGbl_CommentState.CommentType           = 1;
        AslGbl_CommentState.LatestParseOp         = NULL;
        AslGbl_CommentState.ParsingParenBraceNode = NULL;
        AslGbl_CommentState.CaptureComments       = TRUE;
    }
}


/*******************************************************************************
 *
 * FUNCTION:    AslDetectSourceFileType
 *
 * PARAMETERS:  Info            - Name/Handle for the file (must be open)
 *
 * RETURN:      File Type
 *
 * DESCRIPTION: Determine the type of the input file. Either binary (contains
 *              non-ASCII characters), ASL file, or an ACPI Data Table file.
 *
 ******************************************************************************/

static UINT8
AslDetectSourceFileType (
    ASL_FILE_INFO           *Info)
{
    char                    *FileChar;
    UINT8                   Type = ASL_INPUT_TYPE_ASCII_DATA; /* default */
    ACPI_STATUS             Status;


    /* Check for 100% ASCII source file (comments are ignored) */

    Status = FlIsFileAsciiSource (Info->Filename, FALSE);
    if (ACPI_SUCCESS (Status))
    {
        /*
         * File contains ASCII source code. Determine if this is an ASL
         * file or an ACPI data table file.
         */
        while (fgets (AslGbl_CurrentLineBuffer, AslGbl_LineBufferSize, Info->Handle))
        {
            /* Uppercase the buffer for caseless compare */

            FileChar = AslGbl_CurrentLineBuffer;
            while (*FileChar)
            {
                *FileChar = (char) toupper ((int) *FileChar);
                FileChar++;
            }

            /* Presence of "DefinitionBlock" indicates actual ASL code */

            if (strstr (AslGbl_CurrentLineBuffer, "DEFINITIONBLOCK"))
            {
                /* Appears to be an ASL file */

                Type = ASL_INPUT_TYPE_ASCII_ASL;
                goto Cleanup;
            }
        }

        /* Appears to be an ASCII data table source file */

        Type = ASL_INPUT_TYPE_ASCII_DATA;
        goto Cleanup;
    }

    /* We have some sort of binary table, check for valid ACPI table */

    fseek (Info->Handle, 0, SEEK_SET);

    Status = AcValidateTableHeader (Info->Handle, 0);
    if (ACPI_SUCCESS (Status))
    {
        fprintf (stderr,
            "Binary file appears to be a valid ACPI table, disassembling\n");

        Type = ASL_INPUT_TYPE_BINARY_ACPI_TABLE;
        goto Cleanup;
    }
    else
    {
        fprintf (stderr,
            "Binary file does not contain a valid ACPI table\n");
    }

    Type = ASL_INPUT_TYPE_BINARY;


Cleanup:

    /* Must seek back to the start of the file */

    fseek (Info->Handle, 0, SEEK_SET);
    return (Type);
}


/*******************************************************************************
 *
 * FUNCTION:    AslDoDisassembly
 *
 * PARAMETERS:  None
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Initiate AML file disassembly. Uses ACPICA subsystem to build
 *              namespace. This function assumes that the ACPI subsystem has
 *              been initialized. The caller of the initialization will also
 *              terminate the ACPI subsystem.
 *
 ******************************************************************************/

ACPI_STATUS
AslDoDisassembly (
    void)
{
    ACPI_STATUS             Status;


    Status = AcpiAllocateRootTable (4);
    if (ACPI_FAILURE (Status))
    {
        AcpiOsPrintf ("Could not initialize ACPI Table Manager, %s\n",
            AcpiFormatException (Status));
        return (Status);
    }

    /* This is where the disassembly happens */

    AcpiGbl_DmOpt_Disasm = TRUE;
    Status = AdAmlDisassemble (AslToFile,
        AslGbl_Files[ASL_FILE_INPUT].Filename, AslGbl_OutputFilenamePrefix,
        &AslGbl_Files[ASL_FILE_INPUT].Filename);
    if (ACPI_FAILURE (Status))
    {
        return (Status);
    }

    /* Check if any control methods were unresolved */

    AcpiDmUnresolvedWarning (0);

    /* Clear Error log */

    AeClearErrorLog ();

    /*
     * AslGbl_Files[ASL_FILE_INPUT].Filename was replaced with the
     * .DSL disassembly file, which can now be compiled if requested
     */
    if (AslGbl_DoCompile)
    {
        AcpiOsPrintf ("\nCompiling \"%s\"\n",
            AslGbl_Files[ASL_FILE_INPUT].Filename);
        return (AE_CTRL_CONTINUE);
    }

    return (AE_OK);
}


/*******************************************************************************
 *
 * FUNCTION:    AslDoOneFile
 *
 * PARAMETERS:  Filename        - Name of the file
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Process a single file - either disassemble, compile, or both
 *
 ******************************************************************************/

ACPI_STATUS
AslDoOneFile (
    char                    *Filename)
{
    ACPI_STATUS             Status;
    UINT8                   Event;
    ASL_GLOBAL_FILE_NODE    *FileNode;


    /* Re-initialize "some" compiler/preprocessor globals */

    AslInitializeGlobals ();
    PrInitializeGlobals ();

    /*
     * Extract the directory path. This path is used for possible include
     * files and the optional AML filename embedded in the input file
     * DefinitionBlock declaration.
     */
    Status = FlSplitInputPathname (Filename, &AslGbl_DirectoryPath, NULL);
    if (ACPI_FAILURE (Status))
    {
        return (Status);
    }

    /*
     * There was an input file detected at this point. Each input ASL file is
     * associated with one global file node consisting of the input file and
     * all output files associated with it. This is useful when compiling
     * multiple files in one command.
     */
    Status = FlInitOneFile(Filename);
    if (ACPI_FAILURE (Status))
    {
        return (AE_ERROR);
    }

    /* Take a copy of the input filename, convert any backslashes */

    AslGbl_Files[ASL_FILE_INPUT].Filename =
        UtLocalCacheCalloc (strlen (Filename) + 1);

    strcpy (AslGbl_Files[ASL_FILE_INPUT].Filename, Filename);
    UtConvertBackslashes (AslGbl_Files[ASL_FILE_INPUT].Filename);

    /*
     * Open the input file. Here, this should be an ASCII source file,
     * either an ASL file or a Data Table file
     */
    Status = FlOpenInputFile (AslGbl_Files[ASL_FILE_INPUT].Filename);
    if (ACPI_FAILURE (Status))
    {
        AePrintErrorLog (ASL_FILE_STDERR);
        return (AE_ERROR);
    }

    FileNode = FlGetCurrentFileNode();
    if (!FileNode)
    {
        return (AE_ERROR);
    }

    FileNode->OriginalInputFileSize = FlGetFileSize (ASL_FILE_INPUT);

    /* Determine input file type */

    AslGbl_FileType = AslDetectSourceFileType (&AslGbl_Files[ASL_FILE_INPUT]);
    if (AslGbl_FileType == ASL_INPUT_TYPE_BINARY)
    {
        return (AE_ERROR);
    }

    /*
     * If -p not specified, we will use the input filename as the
     * output filename prefix
     */
    if (AslGbl_UseDefaultAmlFilename)
    {
        AslGbl_OutputFilenamePrefix = AslGbl_Files[ASL_FILE_INPUT].Filename;
    }

    /*
     * Open the output file. Note: by default, the name of this file comes from
     * the table descriptor within the input file.
     */
    if (AslGbl_FileType == ASL_INPUT_TYPE_ASCII_ASL)
    {
        Event = UtBeginEvent ("Open AML output file");
        Status = FlOpenAmlOutputFile (AslGbl_OutputFilenamePrefix);
        UtEndEvent (Event);
        if (ACPI_FAILURE (Status))
        {
            AePrintErrorLog (ASL_FILE_STDERR);
            return (AE_ERROR);
        }
    }

    /* Open the optional output files (listings, etc.) */

    Status = FlOpenMiscOutputFiles (AslGbl_OutputFilenamePrefix);
    if (ACPI_FAILURE (Status))
    {
        AePrintErrorLog (ASL_FILE_STDERR);
        return (AE_ERROR);
    }

    /*
     * Compilation of ASL source versus DataTable source uses different
     * compiler subsystems
     */
    switch (AslGbl_FileType)
    {
    /*
     * Data Table Compilation
     */
    case ASL_INPUT_TYPE_ASCII_DATA:

        Status = DtDoCompile ();
        if (ACPI_FAILURE (Status))
        {
            return (Status);
        }

        if (AslGbl_Signature)
        {
            AslGbl_Signature = NULL;
        }

        /* Check if any errors occurred during compile */

        Status = AslCheckForErrorExit ();
        if (ACPI_FAILURE (Status))
        {
            return (Status);
        }

        /* Cleanup (for next source file) and exit */

        AeClearErrorLog ();
        PrTerminatePreprocessor ();
        return (Status);

    /*
     * ASL Compilation
     */
    case ASL_INPUT_TYPE_ASCII_ASL:

        Status = CmDoCompile ();
        if (ACPI_FAILURE (Status))
        {
            PrTerminatePreprocessor ();
            return (Status);
        }

        /*
         * At this point, we know how many lines are in the input file. Save it
         * to display for post-compilation summary.
         */
        FileNode->TotalLineCount = AslGbl_CurrentLineNumber;
        return (AE_OK);

    /*
     * Binary ACPI table was auto-detected, disassemble it
     */
    case ASL_INPUT_TYPE_BINARY_ACPI_TABLE:

        /* We have what appears to be an ACPI table, disassemble it */

        FlCloseFile (ASL_FILE_INPUT);
        AslGbl_DoCompile = FALSE;
        AcpiGbl_DisasmFlag = TRUE;
        Status = AslDoDisassembly ();
        return (Status);

    /* Unknown binary table */

    case ASL_INPUT_TYPE_BINARY:

        AePrintErrorLog (ASL_FILE_STDERR);
        return (AE_ERROR);

    default:

        printf ("Unknown file type %X\n", AslGbl_FileType);
        return (AE_ERROR);
    }
}


/*******************************************************************************
 *
 * FUNCTION:    AslCheckForErrorExit
 *
 * PARAMETERS:  None. Examines global exception count array
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Determine if compiler should abort with error status
 *
 ******************************************************************************/

ACPI_STATUS
AslCheckForErrorExit (
    void)
{

    /*
     * Return non-zero exit code if there have been errors, unless the
     * global ignore error flag has been set
     */
    if (!AslGbl_IgnoreErrors)
    {
        if (AslGbl_ExceptionCount[ASL_ERROR] > 0)
        {
            return (AE_ERROR);
        }

        /* Optionally treat warnings as errors */

        if (AslGbl_WarningsAsErrors)
        {
            if ((AslGbl_ExceptionCount[ASL_WARNING] > 0)  ||
                (AslGbl_ExceptionCount[ASL_WARNING2] > 0) ||
                (AslGbl_ExceptionCount[ASL_WARNING3] > 0))
            {
                AslError (ASL_ERROR, ASL_MSG_WARNING_AS_ERROR, NULL,
                    "(reporting warnings as errors)");
                return (AE_ERROR);
            }
        }
    }

    return (AE_OK);
}
