miscemu/vxd.c

   1 /*
   2  * VxD emulation
   3  *
   4  * Copyright 1995 Anand Kumria
   5  */
   6
   7 #include <stdio.h>
   8 #include "windows.h"
   9 #include "msdos.h"
  10 #include "miscemu.h"
  11 #include "wine.h"
  12 #include "stddebug.h"
  13 /* #define DEBUG_VXD */
  14 #include "debug.h"
  15
  16
  17 /***********************************************************************
  18  *           VXD_PageFile
  19  */
  20 void VXD_PageFile( struct sigcontext_struct context )
  21 {
  22     /* taken from Ralf Brown's Interrupt List */
  23
  24     dprintf_vxd(stddeb,"VxD PageFile called ...\n");
  25
  26     switch(AX_reg(&context))
  27     {
  28     case 0x00: /* get version, is this windows version? */
  29         dprintf_vxd(stddeb,"VxD PageFile: returning version\n");
  30         AX_reg(&context) = (WINVERSION >> 8) | ((WINVERSION << 8) & 0xff00);
  31         RESET_CFLAG(&context);
  32         break;
  33
  34     case 0x01: /* get swap file info */
  35         dprintf_vxd(stddeb,"VxD PageFile: returning swap file info\n");
  36         AX_reg(&context) = 0x00; /* paging disabled */
  37         ECX_reg(&context) = 0;   /* maximum size of paging file */
  38         /* FIXME: do I touch DS:SI or DS:DI? */
  39         RESET_CFLAG(&context);
  40         break;
  41
  42     case 0x02: /* delete permanent swap on exit */
  43         dprintf_vxd(stddeb,"VxD PageFile: supposed to delete swap\n");
  44         RESET_CFLAG(&context);
  45         break;
  46
  47     case 0x03: /* current temporary swap file size */
  48         dprintf_vxd(stddeb,"VxD PageFile: what is current temp. swap size\n");
  49         RESET_CFLAG(&context);
  50         break;
  51
  52     case 0x04: /* read or write?? INTERRUP.D */
  53     case 0x05: /* cancel?? INTERRUP.D */
  54     case 0x06: /* test I/O valid INTERRUP.D */
  55     default:
  56         INT_BARF( &context, 0x2f);
  57         break;
  58     }
  59 }
  60
  61
  62 /***********************************************************************
  63  *           VXD_Shell
  64  */
  65 void VXD_Shell( struct sigcontext_struct context )
  66 {
  67     dprintf_vxd(stddeb,"VxD Shell called ...\n");
  68
  69     switch (DX_reg(&context)) /* Ralf Brown says EDX, but I use DX instead */
  70     {
  71     case 0x0000:
  72         dprintf_vxd(stddeb,"VxD Shell: returning version\n");
  73         AX_reg(&context) = (WINVERSION >> 8) | ((WINVERSION << 8) & 0xff00);
  74         EBX_reg(&context) = 1; /* system VM Handle */
  75         break;
  76
  77     case 0x0001:
  78     case 0x0002:
  79     case 0x0003:
  80     case 0x0004:
  81     case 0x0005:
  82         dprintf_vxd(stddeb,"VxD Shell: EDX = %08lx\n",EDX_reg(&context));
  83         INT_BARF( &context, 0x2f);
  84         break;
  85
  86     case 0x0006: /* SHELL_Get_VM_State */
  87         dprintf_vxd(stddeb,"VxD Shell: returning VM state\n");
  88         /* Actually we don't, not yet. We have to return a structure
  89          * and I am not to sure how to set it up and return it yet,
  90          * so for now let's do nothing. I can (hopefully) get this
  91          * by the next release
  92          */
  93         /* RESET_CFLAG(&context); */
  94         break;
  95
  96     case 0x0007:
  97     case 0x0008:
  98     case 0x0009:
  99     case 0x000A:
 100     case 0x000B:
 101     case 0x000C:
 102     case 0x000D:
 103     case 0x000E:
 104     case 0x000F:
 105     case 0x0010:
 106     case 0x0011:
 107     case 0x0012:
 108     case 0x0013:
 109     case 0x0014:
 110     case 0x0015:
 111     case 0x0016:
 112     default:
 113         dprintf_vxd(stddeb,"VxD Shell: EDX = %08lx\n",EDX_reg(&context));
 114         INT_BARF( &context, 0x2f);
 115         break;
 116     }
 117 }
 118
 119
 120 /***********************************************************************
 121  *           VXD_Comm
 122  */
 123 void VXD_Comm( struct sigcontext_struct context )
 124 {
 125     dprintf_vxd(stddeb,"VxD Comm called ...\n");
 126
 127     switch (AX_reg(&context))
 128     {
 129     case 0x0000: /* get version */
 130         dprintf_vxd(stddeb,"VxD Comm: returning version\n");
 131         AX_reg(&context) = (WINVERSION >> 8) | ((WINVERSION << 8) & 0xff00);
 132         RESET_CFLAG(&context);
 133         break;
 134
 135     case 0x0001: /* set port global */
 136     case 0x0002: /* get focus */
 137     case 0x0003: /* virtualise port */
 138     default:
 139         INT_BARF( &context, 0x2f);
 140     }
 141 }