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efihello.c revision 1.1 
      1 /******************************************************************************
      2  *
      3  * Module Name: efihello - very simple ACPICA/EFI integration example
      4  *
      5  *****************************************************************************/
      6 
      7 /*
      8  * Copyright (C) 2000 - 2017, Intel Corp.
      9  * All rights reserved.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions, and the following disclaimer,
     16  *    without modification.
     17  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
     18  *    substantially similar to the "NO WARRANTY" disclaimer below
     19  *    ("Disclaimer") and any redistribution must be conditioned upon
     20  *    including a substantially similar Disclaimer requirement for further
     21  *    binary redistribution.
     22  * 3. Neither the names of the above-listed copyright holders nor the names
     23  *    of any contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * Alternatively, this software may be distributed under the terms of the
     27  * GNU General Public License ("GPL") version 2 as published by the Free
     28  * Software Foundation.
     29  *
     30  * NO WARRANTY
     31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
     34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     35  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
     40  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     41  * POSSIBILITY OF SUCH DAMAGES.
     42  */
     43 
     44 #include "acpi.h"
     45 #include "accommon.h"
     46 #include "acapps.h"
     47 
     48 
     49 #define LINE_SIZE           256
     50 static char                 LineBuffer[LINE_SIZE];
     51 
     52 /******************************************************************************
     53  *
     54  * FUNCTION:    main
     55  *
     56  * PARAMETERS:  argc/argv           - Standard argc/argv
     57  *
     58  * RETURN:      Status
     59  *
     60  * DESCRIPTION: C main function for efihello
     61  *
     62  ******************************************************************************/
     63 
     64 #ifndef _GNU_EFI
     65 int ACPI_SYSTEM_XFACE
     66 main (
     67     int                     argc,
     68     char                    *argv[])
     69 #else
     70 int ACPI_SYSTEM_XFACE
     71 acpi_main (
     72     int                     argc,
     73     char                    *argv[])
     74 #endif
     75 {
     76     ACPI_FILE               File;
     77     BOOLEAN                 DoCloseFile = FALSE;
     78     char                    *Result;
     79 
     80 
     81     AcpiOsInitialize ();
     82 
     83     printf ("argc=%d\n", argc);
     84 
     85     if (argc > 1)
     86     {
     87         File = fopen (argv[1], "r");
     88         if (!File)
     89         {
     90             printf ("Failed to open %s.\n", argv[1]);
     91             return (-1);
     92         }
     93         DoCloseFile = TRUE;
     94     }
     95     else
     96     {
     97         File = stdin;
     98     }
     99 
    100     while (1)
    101     {
    102         Result = fgets (LineBuffer, LINE_SIZE, File);
    103         if (!Result)
    104         {
    105             printf ("Failed to read %s.\n", argv[1]);
    106             fclose (File);
    107             return (-2);
    108         }
    109 
    110         printf ("%s", LineBuffer);
    111 
    112         if (strncmp (Result, "exit", 4) == 0)
    113         {
    114             break;
    115         }
    116     }
    117 
    118 
    119     if (DoCloseFile)
    120     {
    121         fclose (File);
    122     }
    123     return (0);
    124 }
    125