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f1e0b70d39
Start of an implementation of a software DOS emulator. Brought to you by Aleksandar Andrejevic. Good luck ;) Remove the old language files. They will be recreated when the time comes. svn path=/branches/ntvdm/; revision=59249
131 lines
2.9 KiB
C
131 lines
2.9 KiB
C
/*
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* COPYRIGHT: GPL - See COPYING in the top level directory
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* PROJECT: ReactOS Virtual DOS Machine
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* FILE: ntvdm.c
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* PURPOSE: Virtual DOS Machine
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* PROGRAMMERS: Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
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*/
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#include "ntvdm.h"
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BOOLEAN VdmRunning = TRUE;
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LPVOID BaseAddress = NULL;
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LPCWSTR ExceptionName[] =
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{
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L"Division By Zero",
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L"Debug",
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L"Unexpected Error",
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L"Breakpoint",
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L"Integer Overflow",
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L"Bound Range Exceeded",
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L"Invalid Opcode",
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L"FPU Not Available"
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};
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VOID DisplayMessage(LPCWSTR Format, ...)
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{
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WCHAR Buffer[256];
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va_list Parameters;
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va_start(Parameters, Format);
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_vsnwprintf(Buffer, 256, Format, Parameters);
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MessageBox(NULL, Buffer, L"NTVDM Subsystem", MB_OK);
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va_end(Parameters);
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}
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BOOL WINAPI ConsoleCtrlHandler(DWORD ControlType)
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{
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switch (ControlType)
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{
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case CTRL_C_EVENT:
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case CTRL_BREAK_EVENT:
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{
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/* Perform interrupt 0x23 */
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EmulatorInterrupt(0x23);
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}
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default:
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{
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/* Stop the VDM if the user logs out or closes the console */
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VdmRunning = FALSE;
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}
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}
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return TRUE;
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}
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INT wmain(INT argc, WCHAR *argv[])
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{
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INT i;
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BOOLEAN PrintUsage = TRUE;
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CHAR CommandLine[128];
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/* Set the handler routine */
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SetConsoleCtrlHandler(ConsoleCtrlHandler, TRUE);
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/* Parse the command line arguments */
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for (i = 1; i < argc; i++)
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{
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if (argv[i][0] != L'-' && argv[i][0] != L'/') continue;
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switch (argv[i][1])
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{
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case L'f':
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case L'F':
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{
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if (argv[i+1] != NULL)
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{
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/* The DOS command line must be ASCII */
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WideCharToMultiByte(CP_ACP, 0, argv[i+1], -1, CommandLine, 128, NULL, NULL);
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/* This is the only mandatory parameter */
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PrintUsage = FALSE;
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}
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break;
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}
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default:
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{
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wprintf(L"Unknown option: %s", argv[i]);
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}
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}
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}
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if (PrintUsage)
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{
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wprintf(L"ReactOS Virtual DOS Machine\n\n");
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wprintf(L"Usage: NTVDM /F <PROGRAM>\n");
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return 0;
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}
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if (!EmulatorInitialize()) return 1;
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/* Initialize the system BIOS */
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if (!BiosInitialize())
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{
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wprintf(L"FATAL: Failed to initialize the VDM BIOS.\n");
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goto Cleanup;
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}
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/* Initialize the VDM DOS kernel */
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if (!DosInitialize())
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{
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wprintf(L"FATAL: Failed to initialize the VDM DOS kernel.\n");
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goto Cleanup;
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}
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/* Start the process from the command line */
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if (!DosCreateProcess(CommandLine, 0))
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{
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DisplayMessage(L"Could not start program: %S", CommandLine);
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return -1;
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}
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/* Main loop */
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while (VdmRunning) EmulatorStep();
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Cleanup:
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EmulatorCleanup();
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return 0;
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}
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/* EOF */
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