necessary/AmberRAM/resident.c

   1 /*
   2
   3 File: resident.c
   4 Author: Neil Cafferkey
   5 Copyright (C) 2008 Neil Cafferkey
   6
   7 This file is free software; you can redistribute it and/or modify it
   8 under the terms of the GNU Lesser General Public License as
   9 published by the Free Software Foundation; either version 2.1 of the
  10 License, or (at your option) any later version.
  11
  12 This file is distributed in the hope that it will be useful, but
  13 WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15 Lesser General Public License for more details.
  16
  17 You should have received a copy of the GNU Lesser General Public
  18 License along with this file; if not, write to the Free Software
  19 Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  20 MA 02111-1307, USA.
  21
  22 */
  23
  24 #include <aros/debug.h>
  25 #include <exec/types.h>
  26 #include <exec/resident.h>
  27 #include <exec/alerts.h>
  28 #include <dos/dosextens.h>
  29 #include <dos/filehandler.h>
  30
  31 #include <proto/exec.h>
  32 #include <proto/dos.h>
  33
  34 #include "handler.h"
  35
  36 #define _STR(A) #A
  37 #define STR(A) _STR(A)
  38
  39 #define HANDLER_NAME "amberram.handler"
  40 #define VERSION 1
  41 #define REVISION 9
  42
  43 #ifdef __AROS__
  44 #define rom_tag Ram_ROMTag
  45 #endif
  46
  47 extern LONG Main(void);
  48
  49 static AROS_UFP3 (APTR, Init,
  50                   AROS_UFPA(struct Library *, lh, D0),
  51                   AROS_UFPA(BPTR, segList, A0),
  52                   AROS_UFPA(struct ExecBase *, sysBase, A6));
  53
  54 static const TEXT handler_name[] = HANDLER_NAME;
  55 static const TEXT version_string[] =
  56    HANDLER_NAME " " STR(VERSION) "." STR(REVISION) " (" __DATE__ ")\n";
  57 static const TEXT dev_name[] = "RAM";
  58
  59 extern const TEXT dos_name[];
  60
  61 const struct Resident rom_tag =
  62 {
  63    RTC_MATCHWORD,
  64    (struct Resident *)&rom_tag,
  65    (APTR)(&rom_tag + 1),
  66    RTF_AFTERDOS,
  67    VERSION,
  68    NT_PROCESS,
  69    -125,
  70    (STRPTR)handler_name,
  71    (STRPTR)version_string,
  72    (APTR)Init
  73 };
  74
  75 #ifdef DOSBase
  76 #undef DOSBase
  77 #endif
  78
  79 static AROS_UFH3 (APTR, Init,
  80                   AROS_UFHA(struct Library *, lh, D0),
  81                   AROS_UFHA(BPTR, segList, A0),
  82                   AROS_UFHA(struct ExecBase *, sysBase, A6)
  83 )
  84 {
  85    struct DosLibrary *DOSBase;
  86    struct DeviceNode *dev_node;
  87
  88     AROS_USERFUNC_INIT
  89
  90    /* Create device node and add it to the system. The handler will then be
  91       started when it is first accessed */
  92
  93    DOSBase = (struct DosLibrary *)OpenLibrary("dos.library", DOS_VERSION);
  94    dev_node = (APTR)MakeDosEntry(dev_name, DLT_DEVICE);
  95    if(dev_node == NULL)
  96       Alert(AT_DeadEnd | AG_NoMemory);
  97    dev_node->dn_Handler = (STRPTR)handler_name;
  98    dev_node->dn_StackSize = 10000;
  99    dev_node->dn_SegList = MKBADDR((BPTR *)Main - 1);
 100    if(!AddDosEntry((APTR)dev_node))
 101       Alert(AT_DeadEnd);
 102
 103    AROS_USERFUNC_EXIT
 104
 105    return NULL;
 106 }