354 lines
9.7 KiB
C
354 lines
9.7 KiB
C
/*
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* DOS interrupt 2fh handler
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "ldt.h"
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#include "drive.h"
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#include "msdos.h"
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#include "miscemu.h"
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#include "module.h"
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#include "task.h"
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#include "dosexe.h"
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/* #define DEBUG_INT */
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#include "debug.h"
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/* base WPROCS.DLL ordinal number for VxDs */
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#define VXD_BASE 400
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static void do_int2f_16( CONTEXT *context );
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/**********************************************************************
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* INT_Int2fHandler
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*
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* Handler for int 2fh (multiplex).
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*/
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void WINAPI INT_Int2fHandler( CONTEXT *context )
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{
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TRACE(int,"Subfunction 0x%X\n", AH_reg(context));
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switch(AH_reg(context))
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{
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case 0x10:
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AL_reg(context) = 0xff; /* share is installed */
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break;
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case 0x11: /* Network Redirector / IFSFUNC */
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switch (AL_reg(context))
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{
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case 0x00: /* Install check */
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/* not installed */
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break;
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case 0x80: /* Enhanced services - Install check */
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/* not installed */
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break;
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default:
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INT_BARF( context, 0x2f );
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break;
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}
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break;
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case 0x12:
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switch (AL_reg(context))
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{
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case 0x2e: /* get or set DOS error table address */
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switch (DL_reg(context))
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{
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/* Four tables: even commands are 'get', odd are 'set' */
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/* DOS 5.0+ ignores "set" commands */
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case 0x01:
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case 0x03:
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case 0x05:
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case 0x07:
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case 0x09:
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break;
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/* Instead of having a message table in DOS-space, */
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/* we can use a special case for MS-DOS to force */
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/* the secondary interface. */
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case 0x00:
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case 0x02:
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case 0x04:
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case 0x06:
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ES_reg(context) = 0x0001;
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DI_reg(context) = 0x0000;
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break;
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case 0x08:
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FIXME(int, "No real-mode handler for errors yet! (bye!)");
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break;
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default:
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INT_BARF(context, 0x2f);
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}
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break;
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default:
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INT_BARF(context, 0x2f);
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}
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break;
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case 0x15: /* mscdex */
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do_mscdex(context);
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break;
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case 0x16:
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do_int2f_16( context );
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break;
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case 0x43:
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FIXME(int,"check for XMS (not supported)\n");
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AL_reg(context) = 0x42; /* != 0x80 */
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break;
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case 0x45:
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switch (AL_reg(context))
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{
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case 0x00:
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case 0x01:
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case 0x02:
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case 0x03:
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case 0x04:
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case 0x05:
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case 0x06:
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case 0x07:
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case 0x08:
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/* Microsoft Profiler - not installed */
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break;
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default:
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INT_BARF( context, 0x2f );
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}
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break;
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case 0x4a:
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switch(AL_reg(context))
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{
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case 0x10: /* smartdrv */
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break; /* not installed */
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case 0x11: /* dblspace */
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break; /* not installed */
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case 0x12: /* realtime compression interface */
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break; /* not installed */
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default:
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INT_BARF( context, 0x2f );
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}
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break;
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case 0x56: /* INTERLNK */
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switch(AL_reg(context))
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{
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case 0x01: /* check if redirected drive */
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AL_reg(context) = 0; /* not redirected */
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break;
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default:
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INT_BARF( context, 0x2f );
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}
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break;
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case 0x7a: /* NOVELL NetWare */
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switch (AL_reg(context))
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{
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case 0x20: /* Get VLM Call Address */
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/* return nothing -> NetWare not installed */
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break;
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default:
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INT_BARF( context, 0x2f );
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break;
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}
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break;
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case 0xb7: /* append */
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AL_reg(context) = 0; /* not installed */
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break;
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case 0xb8: /* network */
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switch (AL_reg(context))
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{
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case 0x00: /* Install check */
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/* not installed */
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break;
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default:
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INT_BARF( context, 0x2f );
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break;
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}
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break;
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case 0xbd: /* some Novell network install check ??? */
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AX_reg(context) = 0xa5a5; /* pretend to have Novell IPX installed */
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break;
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case 0xbf: /* REDIRIFS.EXE */
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switch (AL_reg(context))
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{
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case 0x00: /* Install check */
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/* not installed */
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break;
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default:
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INT_BARF( context, 0x2f );
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break;
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}
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break;
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case 0xd7: /* Banyan Vines */
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switch (AL_reg(context))
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{
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case 0x01: /* Install check - Get Int Number */
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/* not installed */
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break;
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default:
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INT_BARF( context, 0x2f );
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break;
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}
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break;
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case 0xfa: /* Watcom debugger check, returns 0x666 if installed */
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break;
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default:
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INT_BARF( context, 0x2f );
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break;
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}
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}
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/**********************************************************************
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* do_int2f_16
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*/
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static void do_int2f_16( CONTEXT *context )
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{
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DWORD addr;
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switch(AL_reg(context))
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{
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case 0x00: /* Windows enhanced mode installation check */
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AX_reg(context) = (GetWinFlags() & WF_ENHANCED) ?
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LOWORD(GetVersion16()) : 0;
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break;
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case 0x0a: /* Get Windows version and type */
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AX_reg(context) = 0;
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BX_reg(context) = (LOWORD(GetVersion16()) << 8) |
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(LOWORD(GetVersion16()) >> 8);
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CX_reg(context) = (GetWinFlags() & WF_ENHANCED) ? 3 : 2;
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break;
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case 0x80: /* Release time-slice */
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AL_reg(context) = 0;
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/* FIXME: We need to do something that lets some other process run
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here. */
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sleep(0);
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break;
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case 0x81: /* Begin critical section. */
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/* FIXME? */
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break;
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case 0x82: /* End critical section. */
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/* FIXME? */
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break;
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case 0x83: /* Return Current Virtual Machine ID */
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/* Virtual Machines are usually created/destroyed when Windows runs
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* DOS programs. Since we never do, we are always in the System VM.
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* According to Ralf Brown's Interrupt List, never return 0. But it
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* seems to work okay (returning 0), just to be sure we return 1.
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*/
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BX_reg(context) = 1; /* VM 1 is probably the System VM */
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break;
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case 0x84: /* Get device API entry point */
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addr = (DWORD)NE_GetEntryPoint( GetModuleHandle16("WPROCS"),
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VXD_BASE + BX_reg(context) );
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if (!addr) /* not supported */
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{
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ERR(int,"Accessing unknown VxD %04x - Expect a failure now.\n",
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BX_reg(context) );
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}
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ES_reg(context) = SELECTOROF(addr);
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DI_reg(context) = OFFSETOF(addr);
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break;
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case 0x86: /* DPMI detect mode */
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AX_reg(context) = 0; /* Running under DPMI */
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break;
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case 0x87: /* DPMI installation check */
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#if 1 /* DPMI still breaks pkunzip */
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if (ISV86(context)) break; /* so bail out for now if in v86 mode */
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#endif
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{
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TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
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NE_MODULE *pModule = pTask ? NE_GetPtr( pTask->hModule ) : NULL;
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SYSTEM_INFO si;
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GlobalUnlock16( GetCurrentTask() );
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GetSystemInfo(&si);
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AX_reg(context) = 0x0000; /* DPMI Installed */
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BX_reg(context) = 0x0001; /* 32bits available */
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CL_reg(context) = si.wProcessorLevel;
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DX_reg(context) = 0x005a; /* DPMI major/minor 0.90 */
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SI_reg(context) = 0; /* # of para. of DOS extended private data */
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#ifdef MZ_SUPPORTED /* ES:DI is DPMI switch entry point */
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if (pModule && pModule->lpDosTask)
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ES_reg(context) = pModule->lpDosTask->dpmi_seg;
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else
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#endif
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ES_reg(context) = 0;
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DI_reg(context) = 0;
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break;
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}
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case 0x8a: /* DPMI get vendor-specific API entry point. */
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/* The 1.0 specs say this should work with all 0.9 hosts. */
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break;
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default:
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INT_BARF( context, 0x2f );
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}
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}
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void do_mscdex( CONTEXT *context )
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{
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int drive, count;
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char *p;
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switch(AL_reg(context))
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{
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case 0x00: /* Installation check */
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/* Count the number of contiguous CDROM drives
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*/
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for (drive = count = 0; drive < MAX_DOS_DRIVES; drive++)
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{
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if (DRIVE_GetType(drive) == TYPE_CDROM)
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{
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while (DRIVE_GetType(drive + count) == TYPE_CDROM) count++;
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break;
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}
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}
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BX_reg(context) = count;
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CX_reg(context) = (drive < MAX_DOS_DRIVES) ? drive : 0;
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break;
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case 0x0B: /* drive check */
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AX_reg(context) = (DRIVE_GetType(CX_reg(context)) == TYPE_CDROM);
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BX_reg(context) = 0xADAD;
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break;
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case 0x0C: /* get version */
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BX_reg(context) = 0x020a;
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break;
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case 0x0D: /* get drive letters */
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p = CTX_SEG_OFF_TO_LIN(context, ES_reg(context), BX_reg(context));
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memset( p, 0, MAX_DOS_DRIVES );
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for (drive = 0; drive < MAX_DOS_DRIVES; drive++)
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{
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if (DRIVE_GetType(drive) == TYPE_CDROM) *p++ = drive;
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}
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break;
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#ifdef linux
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/* FIXME: why a new linux-only CDROM drive access, for crying out loud?
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* There are pretty complete routines in multimedia/mcicda.c already! */
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case 0x10: /* direct driver acces */
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FIXME(cdaudio,"mscdex should use multimedia/mcicda.c");
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do_mscdex_dd(context,ISV86(context));
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break;
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#endif
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default:
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FIXME(int, "Unimplemented MSCDEX function 0x%02X.\n", AL_reg(context));
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break;
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}
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}
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