4 * Copyright 1995 Anand Kumria
12 /* #define DEBUG_VXD */
16 #define VXD_BARF(context,name) \
17 fprintf( stderr, "vxd %s: unknown/not implemented parameters:\n" \
18 "vxd %s: AX %04x, BX %04x, CX %04x, DX %04x, " \
19 "SI %04x, DI %04x, DS %04x, ES %04x\n", \
20 (name), (name), AX_reg(context), BX_reg(context), \
21 CX_reg(context), DX_reg(context), SI_reg(context), \
22 DI_reg(context), (WORD)DS_reg(context), (WORD)ES_reg(context) )
25 static WORD
VXD_WinVersion(void)
27 WORD version
= LOWORD(GetVersion16());
28 return (version
>> 8) | (version
<< 8);
31 /***********************************************************************
34 void WINAPI
VXD_PageFile( CONTEXT
*context
)
36 unsigned service
= AX_reg(context
);
38 /* taken from Ralf Brown's Interrupt List */
40 dprintf_vxd(stddeb
,"VxD: [%04x] PageFile\n", (UINT16
)service
);
44 case 0x00: /* get version, is this windows version? */
45 dprintf_vxd(stddeb
,"VxD PageFile: returning version\n");
46 AX_reg(context
) = VXD_WinVersion();
50 case 0x01: /* get swap file info */
51 dprintf_vxd(stddeb
,"VxD PageFile: returning swap file info\n");
52 AX_reg(context
) = 0x00; /* paging disabled */
53 ECX_reg(context
) = 0; /* maximum size of paging file */
54 /* FIXME: do I touch DS:SI or DS:DI? */
58 case 0x02: /* delete permanent swap on exit */
59 dprintf_vxd(stddeb
,"VxD PageFile: supposed to delete swap\n");
63 case 0x03: /* current temporary swap file size */
64 dprintf_vxd(stddeb
,"VxD PageFile: what is current temp. swap size\n");
68 case 0x04: /* read or write?? INTERRUP.D */
69 case 0x05: /* cancel?? INTERRUP.D */
70 case 0x06: /* test I/O valid INTERRUP.D */
72 VXD_BARF( context
, "pagefile" );
78 /***********************************************************************
81 void WINAPI
VXD_Shell( CONTEXT
*context
)
83 unsigned service
= DX_reg(context
);
85 dprintf_vxd(stddeb
,"VxD: [%04x] Shell\n", (UINT16
)service
);
87 switch (service
) /* Ralf Brown says EDX, but I use DX instead */
90 dprintf_vxd(stddeb
,"VxD Shell: returning version\n");
91 AX_reg(context
) = VXD_WinVersion();
92 EBX_reg(context
) = 1; /* system VM Handle */
100 dprintf_vxd(stddeb
,"VxD Shell: EDX = %08lx\n",EDX_reg(context
));
101 VXD_BARF( context
, "shell" );
104 case 0x0006: /* SHELL_Get_VM_State */
105 dprintf_vxd(stddeb
,"VxD Shell: returning VM state\n");
106 /* Actually we don't, not yet. We have to return a structure
107 * and I am not to sure how to set it up and return it yet,
108 * so for now let's do nothing. I can (hopefully) get this
109 * by the next release
111 /* RESET_CFLAG(context); */
131 dprintf_vxd(stddeb
,"VxD Shell: EDX = %08lx\n",EDX_reg(context
));
132 VXD_BARF( context
, "shell");
138 /***********************************************************************
141 void WINAPI
VXD_Comm( CONTEXT
*context
)
143 unsigned service
= AX_reg(context
);
145 dprintf_vxd(stddeb
,"VxD: [%04x] Comm\n", (UINT16
)service
);
149 case 0x0000: /* get version */
150 dprintf_vxd(stddeb
,"VxD Comm: returning version\n");
151 AX_reg(context
) = VXD_WinVersion();
152 RESET_CFLAG(context
);
155 case 0x0001: /* set port global */
156 case 0x0002: /* get focus */
157 case 0x0003: /* virtualise port */
159 VXD_BARF( context
, "comm" );
163 /***********************************************************************
166 void VXD_Timer( CONTEXT
*context
)
168 unsigned service
= AX_reg(context
);
170 dprintf_vxd(stddeb
,"VxD: [%04x] Virtual Timer\n", (UINT16
)service
);
174 case 0x0000: /* version */
175 AX_reg(context
) = VXD_WinVersion();
176 RESET_CFLAG(context
);
179 case 0x0100: /* clock tick time, in 840nsecs */
180 EAX_reg(context
) = GetTickCount();
182 EDX_reg(context
) = EAX_reg(context
) >> 22;
183 EAX_reg(context
) <<= 10; /* not very precise */
186 case 0x0101: /* current Windows time, msecs */
187 case 0x0102: /* current VM time, msecs */
188 EAX_reg(context
) = GetTickCount();
192 VXD_BARF( context
, "VTD" );