VOID InitializeInt32(VOID)
{
/* Register the Control BOP */
RegisterBop(BOP_CONTROL, ControlBop);
}
VOID XmsCleanup(VOID)
{
RegisterBop(BOP_XMS, NULL);
DosDeleteDevice(Node);
}
static VOID WINAPI DosStart(LPWORD Stack)
{
#ifdef STANDALONE
DWORD Result;
CHAR ApplicationName[MAX_PATH];
CHAR CommandLine[DOS_CMDLINE_LENGTH];
#endif
DPRINT("DosStart\n");
/*
* We succeeded, deregister the DOS Starting BOP
* so that no app will be able to call us back.
*/
RegisterBop(BOP_START_DOS, NULL);
/* Load the mouse driver */
DosMouseInitialize();
#ifndef STANDALONE
/* Create the GetNextVDMCommand thread */
CommandThread = CreateThread(NULL, 0, &CommandThreadProc, NULL, 0, NULL);
if (CommandThread == NULL)
{
wprintf(L"FATAL: Failed to create the command processing thread: %d\n", GetLastError());
goto Quit;
}
/* Wait for the command thread to exit */
WaitForSingleObject(CommandThread, INFINITE);
/* Close the thread handle */
CloseHandle(CommandThread);
#else
if (NtVdmArgc >= 2)
{
WideCharToMultiByte(CP_ACP, 0, NtVdmArgv[1], -1, ApplicationName, sizeof(ApplicationName), NULL, NULL);
if (NtVdmArgc >= 3)
WideCharToMultiByte(CP_ACP, 0, NtVdmArgv[2], -1, CommandLine, sizeof(CommandLine), NULL, NULL);
else
strcpy(CommandLine, "");
}
else
{
DisplayMessage(L"Invalid DOS command line\n");
goto Quit;
}
/* Start the process from the command line */
DPRINT1("Starting '%s' ('%s')...\n", ApplicationName, CommandLine);
Result = DosStartProcess(ApplicationName,
CommandLine,
SEG_OFF_TO_PTR(SYSTEM_ENV_BLOCK, 0));
if (Result != ERROR_SUCCESS)
{
DisplayMessage(L"Could not start '%S'. Error: %u", ApplicationName, Result);
goto Quit;
}
#endif
Quit:
/* Stop the VDM */
EmulatorTerminate();
}
static VOID WINAPI DosInitialize(LPWORD Stack)
{
BOOLEAN Success = FALSE;
/* Get the DOS kernel file name (NULL-terminated) */
// FIXME: Isn't it possible to use some DS:SI instead??
LPCSTR DosKernelFileName = (LPCSTR)SEG_OFF_TO_PTR(getCS(), getIP());
setIP(getIP() + strlen(DosKernelFileName) + 1); // Skip it
DPRINT("DosInitialize('%s')\n", DosKernelFileName);
/* Register the DOS BOPs */
RegisterBop(BOP_DOS, DosSystemBop );
RegisterBop(BOP_CMD, DosCmdInterpreterBop);
if (DosKernelFileName && DosKernelFileName[0] != '\0')
{
HANDLE hDosBios;
ULONG ulDosBiosSize = 0;
/* Open the DOS BIOS file */
hDosBios = FileOpen(DosKernelFileName, &ulDosBiosSize);
/* If we failed, bail out */
if (hDosBios == NULL) goto QuitCustom;
/* Attempt to load the DOS BIOS into memory */
Success = FileLoadByHandle(hDosBios,
REAL_TO_PHYS(TO_LINEAR(0x0070, 0x0000)),
ulDosBiosSize,
&ulDosBiosSize);
DPRINT1("DOS BIOS loading %s at %04X:%04X, size 0x%X ; GetLastError() = %u\n",
(Success ? "succeeded" : "failed"),
0x0070, 0x0000,
ulDosBiosSize,
GetLastError());
/* Close the DOS BIOS file */
FileClose(hDosBios);
if (!Success) goto QuitCustom;
/* Position execution pointers and return */
setCS(0x0070);
setIP(0x0000);
/* Return control */
QuitCustom:
if (!Success)
DisplayMessage(L"Custom DOS '%S' loading failed, what to do??", DosKernelFileName);
}
else
{
Success = DosBIOSInitialize();
// Success &= DosKRNLInitialize();
if (!Success) goto Quit32;
/* Write the "bootsector" */
RtlCopyMemory(SEG_OFF_TO_PTR(0x0070, 0x0000), Startup, sizeof(Startup));
/* Register the DOS Starting BOP */
RegisterBop(BOP_START_DOS, DosStart);
/* Position execution pointers and return */
setCS(0x0070);
setIP(0x0000);
/* Return control */
Quit32:
if (!Success)
DisplayMessage(L"DOS32 loading failed, what to do??");
}
if (Success)
{
/*
* We succeeded, deregister the DOS Loading BOP
* so that no app will be able to call us back.
*/
RegisterBop(BOP_LOAD_DOS, NULL);
}
}
BOOLEAN EmulatorInitialize(HANDLE ConsoleInput, HANDLE ConsoleOutput)
{
/* Allocate memory for the 16-bit address space */
BaseAddress = HeapAlloc(GetProcessHeap(), /*HEAP_ZERO_MEMORY*/ 0, MAX_ADDRESS);
if (BaseAddress == NULL)
{
wprintf(L"FATAL: Failed to allocate VDM memory.\n");
return FALSE;
}
/*
* For diagnostics purposes, we fill the memory with INT 0x03 codes
* so that if a program wants to execute random code in memory, we can
* retrieve the exact CS:IP where the problem happens.
*/
RtlFillMemory(BaseAddress, MAX_ADDRESS, 0xCC);
/* Initialize I/O ports */
/* Initialize RAM */
/* Initialize the CPU */
/* Initialize the internal clock */
if (!ClockInitialize())
{
wprintf(L"FATAL: Failed to initialize the clock\n");
return FALSE;
}
/* Initialize the CPU */
CpuInitialize();
// Fast486Initialize(&EmulatorContext,
// EmulatorReadMemory,
// EmulatorWriteMemory,
// EmulatorReadIo,
// EmulatorWriteIo,
// NULL,
// EmulatorBiosOperation,
// EmulatorIntAcknowledge,
// NULL /* TODO: Use a TLB */);
/* Initialize DMA */
/* Initialize the PIC, the PIT, the CMOS and the PC Speaker */
PicInitialize();
PitInitialize();
CmosInitialize();
SpeakerInitialize();
/* Set output functions */
PitSetOutFunction(0, NULL, PitChan0Out);
PitSetOutFunction(1, NULL, PitChan1Out);
PitSetOutFunction(2, NULL, PitChan2Out);
/* Register the I/O Ports */
RegisterIoPort(CONTROL_SYSTEM_PORT61H, Port61hRead, Port61hWrite);
/* Set the console input mode */
// FIXME: Activate ENABLE_WINDOW_INPUT when we will want to perform actions
// upon console window events (screen buffer resize, ...).
SetConsoleMode(ConsoleInput, ENABLE_PROCESSED_INPUT /* | ENABLE_WINDOW_INPUT */);
// SetConsoleMode(ConsoleOutput, ENABLE_PROCESSED_OUTPUT | ENABLE_WRAP_AT_EOL_OUTPUT);
/**/EnableExtraHardware(ConsoleInput);/**/
/* Initialize the PS/2 port */
PS2Initialize();
/* Initialize the keyboard and mouse and connect them to their PS/2 ports */
KeyboardInit(0);
MouseInit(1);
/**************** ATTACH INPUT WITH CONSOLE *****************/
/* Start the input thread */
InputThread = CreateThread(NULL, 0, &PumpConsoleInput, ConsoleInput, 0, NULL);
if (InputThread == NULL)
{
DisplayMessage(L"Failed to create the console input thread.");
return FALSE;
}
/************************************************************/
/* Initialize the VGA */
if (!VgaInitialize(ConsoleOutput))
{
DisplayMessage(L"Failed to initialize VGA support.");
return FALSE;
}
/* Initialize the software callback system and register the emulator BOPs */
InitializeInt32();
RegisterBop(BOP_DEBUGGER , EmulatorDebugBreakBop);
// RegisterBop(BOP_UNSIMULATE, CpuUnsimulateBop);
/* Initialize VDD support */
VDDSupInitialize();
return TRUE;
}
BOOLEAN EmulatorInitialize(HANDLE ConsoleInput, HANDLE ConsoleOutput)
{
USHORT i;
/* Initialize memory */
if (!MemInitialize())
{
wprintf(L"Memory initialization failed.\n");
return FALSE;
}
/* Initialize I/O ports */
/* Initialize RAM */
/* Initialize the CPU */
/* Initialize the internal clock */
if (!ClockInitialize())
{
wprintf(L"FATAL: Failed to initialize the clock\n");
EmulatorCleanup();
return FALSE;
}
/* Initialize the CPU */
CpuInitialize();
/* Initialize DMA */
DmaInitialize();
/* Initialize PIC, PIT, CMOS, PC Speaker and PS/2 */
PicInitialize();
PitInitialize();
PitSetOutFunction(0, NULL, PitChan0Out);
PitSetOutFunction(1, NULL, PitChan1Out);
PitSetOutFunction(2, NULL, PitChan2Out);
CmosInitialize();
SpeakerInitialize();
PpiInitialize();
PS2Initialize();
/* Initialize the keyboard and mouse and connect them to their PS/2 ports */
KeyboardInit(0);
MouseInit(1);
/**************** ATTACH INPUT WITH CONSOLE *****************/
/* Create the task event */
VdmTaskEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
ASSERT(VdmTaskEvent != NULL);
/* Start the input thread */
InputThread = CreateThread(NULL, 0, &ConsoleEventThread, ConsoleInput, 0, NULL);
if (InputThread == NULL)
{
wprintf(L"FATAL: Failed to create the console input thread.\n");
EmulatorCleanup();
return FALSE;
}
ResumeEventThread();
/************************************************************/
/* Initialize the VGA */
if (!VgaInitialize(ConsoleOutput))
{
wprintf(L"FATAL: Failed to initialize VGA support.\n");
EmulatorCleanup();
return FALSE;
}
/* Initialize the disk controller */
if (!DiskCtrlInitialize())
{
wprintf(L"FATAL: Failed to completely initialize the disk controller.\n");
EmulatorCleanup();
return FALSE;
}
/* Mount the available floppy disks */
for (i = 0; i < ARRAYSIZE(GlobalSettings.FloppyDisks); ++i)
{
if (GlobalSettings.FloppyDisks[i].Length != 0 &&
GlobalSettings.FloppyDisks[i].Buffer &&
GlobalSettings.FloppyDisks[i].Buffer != '\0')
{
if (!MountDisk(FLOPPY_DISK, i, GlobalSettings.FloppyDisks[i].Buffer, FALSE))
{
DPRINT1("Failed to mount floppy disk file '%wZ'.\n", &GlobalSettings.FloppyDisks[i]);
RtlFreeUnicodeString(&GlobalSettings.FloppyDisks[i]);
RtlInitEmptyUnicodeString(&GlobalSettings.FloppyDisks[i], NULL, 0);
}
}
}
/*
* Mount the available hard disks. Contrary to floppies, failing
* mounting a hard disk is considered as an unrecoverable error.
*/
for (i = 0; i < ARRAYSIZE(GlobalSettings.HardDisks); ++i)
{
if (GlobalSettings.HardDisks[i].Length != 0 &&
GlobalSettings.HardDisks[i].Buffer &&
GlobalSettings.HardDisks[i].Buffer != L'\0')
{
if (!MountDisk(HARD_DISK, i, GlobalSettings.HardDisks[i].Buffer, FALSE))
{
wprintf(L"FATAL: Failed to mount hard disk file '%wZ'.\n", &GlobalSettings.HardDisks[i]);
EmulatorCleanup();
return FALSE;
}
}
}
/* Refresh the menu state */
UpdateVdmMenuDisks();
/* Initialize the software callback system and register the emulator BOPs */
InitializeInt32();
RegisterBop(BOP_DEBUGGER , EmulatorDebugBreakBop);
// RegisterBop(BOP_UNSIMULATE, CpuUnsimulateBop);
/* Initialize VDD support */
VDDSupInitialize();
return TRUE;
}
