+++ /dev/null
-/*
- * COPYRIGHT: GPL - See COPYING in the top level directory
- * PROJECT: ReactOS Virtual DOS Machine
- * FILE: subsystems/mvdm/ntvdm/emulator.c
- * PURPOSE: Minimal x86 machine emulator for the VDM
- * PROGRAMMERS: Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
- */
-
-/* INCLUDES *******************************************************************/
-
-#include "ntvdm.h"
-
-#define NDEBUG
-#include <debug.h>
-
-#include "emulator.h"
-#include "memory.h"
-
-#include "cpu/callback.h"
-#include "cpu/cpu.h"
-#include "cpu/bop.h"
-#include <isvbop.h>
-
-#include "int32.h"
-
-#include "clock.h"
-#include "bios/rom.h"
-#include "hardware/cmos.h"
-#include "hardware/disk.h"
-#include "hardware/dma.h"
-#include "hardware/keyboard.h"
-#include "hardware/mouse.h"
-#include "hardware/pic.h"
-#include "hardware/pit.h"
-#include "hardware/ppi.h"
-#include "hardware/ps2.h"
-#include "hardware/sound/speaker.h"
-#include "hardware/video/svga.h"
-/**/
-#include "./console/video.h"
-/**/
-
-#include "vddsup.h"
-#include "io.h"
-
-/* PRIVATE VARIABLES **********************************************************/
-
-LPVOID BaseAddress = NULL;
-BOOLEAN VdmRunning = TRUE;
-
-HANDLE VdmTaskEvent = NULL;
-static HANDLE InputThread = NULL;
-
-LPCWSTR ExceptionName[] =
-{
- L"Division By Zero",
- L"Debug",
- L"Unexpected Error",
- L"Breakpoint",
- L"Integer Overflow",
- L"Bound Range Exceeded",
- L"Invalid Opcode",
- L"FPU Not Available"
-};
-
-/* BOP Identifiers */
-#define BOP_DEBUGGER 0x56 // Break into the debugger from a 16-bit app
-
-/* PRIVATE FUNCTIONS **********************************************************/
-
-UCHAR FASTCALL EmulatorIntAcknowledge(PFAST486_STATE State)
-{
- UNREFERENCED_PARAMETER(State);
-
- /* Get the interrupt number from the PIC */
- return PicGetInterrupt();
-}
-
-VOID FASTCALL EmulatorFpu(PFAST486_STATE State)
-{
- /* The FPU is wired to IRQ 13 */
- PicInterruptRequest(13);
-}
-
-VOID EmulatorException(BYTE ExceptionNumber, LPWORD Stack)
-{
- WORD CodeSegment, InstructionPointer;
- PBYTE Opcode;
-
- ASSERT(ExceptionNumber < 8);
-
- /* Get the CS:IP */
- InstructionPointer = Stack[STACK_IP];
- CodeSegment = Stack[STACK_CS];
- Opcode = (PBYTE)SEG_OFF_TO_PTR(CodeSegment, InstructionPointer);
-
- /* Display a message to the user */
- DisplayMessage(L"Exception: %s occurred at %04X:%04X\n"
- L"Opcode: %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X",
- ExceptionName[ExceptionNumber],
- CodeSegment,
- InstructionPointer,
- Opcode[0],
- Opcode[1],
- Opcode[2],
- Opcode[3],
- Opcode[4],
- Opcode[5],
- Opcode[6],
- Opcode[7],
- Opcode[8],
- Opcode[9]);
-
- Fast486DumpState(&EmulatorContext);
-
- /* Stop the VDM */
- EmulatorTerminate();
-}
-
-VOID EmulatorInterruptSignal(VOID)
-{
- /* Call the Fast486 API */
- Fast486InterruptSignal(&EmulatorContext);
-}
-
-static VOID WINAPI EmulatorDebugBreakBop(LPWORD Stack)
-{
- DPRINT1("NTVDM: BOP_DEBUGGER\n");
- DebugBreak();
-}
-
-static VOID WINAPI PitChan0Out(LPVOID Param, BOOLEAN State)
-{
- if (State)
- {
- DPRINT("PicInterruptRequest\n");
- PicInterruptRequest(0); // Raise IRQ 0
- }
- // else < Lower IRQ 0 >
-}
-
-static VOID WINAPI PitChan1Out(LPVOID Param, BOOLEAN State)
-{
-#if 0
- if (State)
- {
- /* Set bit 4 of Port 61h */
- Port61hState |= 1 << 4;
- }
- else
- {
- /* Clear bit 4 of Port 61h */
- Port61hState &= ~(1 << 4);
- }
-#else
- Port61hState = (Port61hState & 0xEF) | (State << 4);
-#endif
-}
-
-static VOID WINAPI PitChan2Out(LPVOID Param, BOOLEAN State)
-{
- BYTE OldPort61hState = Port61hState;
-
-#if 0
- if (State)
- {
- /* Set bit 5 of Port 61h */
- Port61hState |= 1 << 5;
- }
- else
- {
- /* Clear bit 5 of Port 61h */
- Port61hState &= ~(1 << 5);
- }
-#else
- Port61hState = (Port61hState & 0xDF) | (State << 5);
-#endif
-
- if ((OldPort61hState ^ Port61hState) & 0x20)
- {
- DPRINT("PitChan2Out -- Port61hState changed\n");
- SpeakerChange(Port61hState);
- }
-}
-
-
-static DWORD
-WINAPI
-ConsoleEventThread(LPVOID Parameter)
-{
- HANDLE ConsoleInput = (HANDLE)Parameter;
- HANDLE WaitHandles[2];
- DWORD WaitResult;
-
- /*
- * For optimization purposes, Windows (and hence ReactOS, too, for
- * compatibility reasons) uses a static buffer if no more than five
- * input records are read. Otherwise a new buffer is used.
- * The client-side expects that we know this behaviour.
- * See consrv/coninput.c
- *
- * We exploit here this optimization by also using a buffer of 5 records.
- */
- INPUT_RECORD InputRecords[5];
- ULONG NumRecords, i;
-
- WaitHandles[0] = VdmTaskEvent;
- WaitHandles[1] = GetConsoleInputWaitHandle();
-
- while (VdmRunning)
- {
- /* Make sure the task event is signaled */
- WaitResult = WaitForMultipleObjects(ARRAYSIZE(WaitHandles),
- WaitHandles,
- TRUE,
- INFINITE);
- switch (WaitResult)
- {
- case WAIT_OBJECT_0 + 0:
- case WAIT_OBJECT_0 + 1:
- break;
- default:
- return GetLastError();
- }
-
- /* Wait for an input record */
- if (!ReadConsoleInputExW(ConsoleInput,
- InputRecords,
- ARRAYSIZE(InputRecords),
- &NumRecords,
- CONSOLE_READ_CONTINUE))
- {
- DWORD LastError = GetLastError();
- DPRINT1("Error reading console input (0x%p, %lu) - Error %lu\n", ConsoleInput, NumRecords, LastError);
- return LastError;
- }
-
- // ASSERT(NumRecords != 0);
- if (NumRecords == 0)
- {
- DPRINT1("Got NumRecords == 0!\n");
- continue;
- }
-
- /* Dispatch the events */
- for (i = 0; i < NumRecords; i++)
- {
- /* Check the event type */
- switch (InputRecords[i].EventType)
- {
- /*
- * Hardware events
- */
- case KEY_EVENT:
- KeyboardEventHandler(&InputRecords[i].Event.KeyEvent);
- break;
-
- case MOUSE_EVENT:
- MouseEventHandler(&InputRecords[i].Event.MouseEvent);
- break;
-
- case WINDOW_BUFFER_SIZE_EVENT:
- ScreenEventHandler(&InputRecords[i].Event.WindowBufferSizeEvent);
- break;
-
- /*
- * Interface events
- */
- case MENU_EVENT:
- MenuEventHandler(&InputRecords[i].Event.MenuEvent);
- break;
-
- case FOCUS_EVENT:
- FocusEventHandler(&InputRecords[i].Event.FocusEvent);
- break;
-
- default:
- DPRINT1("Unknown input event type 0x%04x\n", InputRecords[i].EventType);
- break;
- }
- }
-
- /* Let the console subsystem queue some new events */
- Sleep(10);
- }
-
- return 0;
-}
-
-static VOID PauseEventThread(VOID)
-{
- ResetEvent(VdmTaskEvent);
-}
-
-static VOID ResumeEventThread(VOID)
-{
- SetEvent(VdmTaskEvent);
-}
-
-
-/* PUBLIC FUNCTIONS ***********************************************************/
-
-static VOID
-DumpMemoryRaw(HANDLE hFile)
-{
- PVOID Buffer;
- SIZE_T Size;
-
- /* Dump the VM memory */
- SetFilePointer(hFile, 0, NULL, FILE_BEGIN);
- Buffer = REAL_TO_PHYS(NULL);
- Size = MAX_ADDRESS - (ULONG_PTR)(NULL);
- WriteFile(hFile, Buffer, Size, &Size, NULL);
-}
-
-static VOID
-DumpMemoryTxt(HANDLE hFile)
-{
-#define LINE_SIZE 75 + 2
- ULONG i;
- PBYTE Ptr1, Ptr2;
- CHAR LineBuffer[LINE_SIZE];
- PCHAR Line;
- SIZE_T LineSize;
-
- /* Dump the VM memory */
- SetFilePointer(hFile, 0, NULL, FILE_BEGIN);
- Ptr1 = Ptr2 = REAL_TO_PHYS(NULL);
- while (MAX_ADDRESS - (ULONG_PTR)PHYS_TO_REAL(Ptr1) > 0)
- {
- Ptr1 = Ptr2;
- Line = LineBuffer;
-
- /* Print the address */
- Line += snprintf(Line, LINE_SIZE + LineBuffer - Line, "%08x ", PHYS_TO_REAL(Ptr1));
-
- /* Print up to 16 bytes... */
-
- /* ... in hexadecimal form first... */
- i = 0;
- while (i++ <= 0x0F && (MAX_ADDRESS - (ULONG_PTR)PHYS_TO_REAL(Ptr1) > 0))
- {
- Line += snprintf(Line, LINE_SIZE + LineBuffer - Line, " %02x", *Ptr1);
- ++Ptr1;
- }
-
- /* ... align with spaces if needed... */
- RtlFillMemory(Line, (0x0F + 2 - i) * 3 + 2, ' ');
- Line += (0x0F + 2 - i) * 3 + 2;
-
- /* ... then in character form. */
- i = 0;
- while (i++ <= 0x0F && (MAX_ADDRESS - (ULONG_PTR)PHYS_TO_REAL(Ptr2) > 0))
- {
- *Line++ = ((*Ptr2 >= 0x20 && *Ptr2 <= 0x7E) || (*Ptr2 >= 0x80 && *Ptr2 < 0xFF) ? *Ptr2 : '.');
- ++Ptr2;
- }
-
- /* Newline */
- *Line++ = '\r';
- *Line++ = '\n';
-
- /* Finally write the line to the file */
- LineSize = Line - LineBuffer;
- WriteFile(hFile, LineBuffer, LineSize, &LineSize, NULL);
- }
-}
-
-VOID DumpMemory(BOOLEAN TextFormat)
-{
- static ULONG DumpNumber = 0;
-
- HANDLE hFile;
- WCHAR FileName[MAX_PATH];
-
- /* Build a suitable file name */
- _snwprintf(FileName, MAX_PATH,
- L"memdump%lu.%s",
- DumpNumber,
- TextFormat ? L"txt" : L"dat");
- ++DumpNumber;
-
- DPRINT1("Creating memory dump file '%S'...\n", FileName);
-
- /* Always create the dump file */
- hFile = CreateFileW(FileName,
- GENERIC_WRITE,
- 0,
- NULL,
- CREATE_ALWAYS,
- FILE_ATTRIBUTE_NORMAL,
- NULL);
-
- if (hFile == INVALID_HANDLE_VALUE)
- {
- DPRINT1("Error when creating '%S' for memory dumping, GetLastError() = %u\n",
- FileName, GetLastError());
- return;
- }
-
- /* Dump the VM memory in the chosen format */
- if (TextFormat)
- DumpMemoryTxt(hFile);
- else
- DumpMemoryRaw(hFile);
-
- /* Close the file */
- CloseHandle(hFile);
-
- DPRINT1("Memory dump done\n");
-}
-
-VOID MountFloppy(IN ULONG DiskNumber)
-{
-// FIXME: This should be present in PSDK commdlg.h
-//
-// FlagsEx Values
-#if (_WIN32_WINNT >= 0x0500)
-#define OFN_EX_NOPLACESBAR 0x00000001
-#endif // (_WIN32_WINNT >= 0x0500)
-
- BOOLEAN Success;
- OPENFILENAMEW ofn;
- WCHAR szFile[MAX_PATH] = L"";
-
- ASSERT(DiskNumber < ARRAYSIZE(GlobalSettings.FloppyDisks));
-
- RtlZeroMemory(&ofn, sizeof(ofn));
- ofn.lStructSize = sizeof(ofn);
- ofn.hwndOwner = hConsoleWnd;
- ofn.lpstrTitle = L"Select a virtual floppy image";
- ofn.Flags = OFN_EXPLORER | OFN_ENABLESIZING | OFN_LONGNAMES | OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;
-// ofn.FlagsEx = OFN_EX_NOPLACESBAR;
- ofn.lpstrFilter = L"Virtual floppy images (*.vfd;*.img;*.ima;*.dsk)\0*.vfd;*.img;*.ima;*.dsk\0All files (*.*)\0*.*\0\0";
- ofn.lpstrDefExt = L"vfd";
- ofn.nFilterIndex = 0;
- ofn.lpstrFile = szFile;
- ofn.nMaxFile = ARRAYSIZE(szFile);
-
- if (!GetOpenFileNameW(&ofn))
- {
- DPRINT1("CommDlgExtendedError = %d\n", CommDlgExtendedError());
- return;
- }
-
- /* Free the old string */
- if (GlobalSettings.FloppyDisks[DiskNumber].Buffer)
- RtlFreeUnicodeString(&GlobalSettings.FloppyDisks[DiskNumber]);
-
- /* Reinitialize the string */
- Success = RtlCreateUnicodeString(&GlobalSettings.FloppyDisks[DiskNumber], szFile);
- ASSERT(Success);
-
- /* Mount the disk */
- if (!MountDisk(FLOPPY_DISK, DiskNumber, GlobalSettings.FloppyDisks[DiskNumber].Buffer, !!(ofn.Flags & OFN_READONLY)))
- {
- DisplayMessage(L"An error happened when mounting disk %d", DiskNumber);
- RtlFreeUnicodeString(&GlobalSettings.FloppyDisks[DiskNumber]);
- RtlInitEmptyUnicodeString(&GlobalSettings.FloppyDisks[DiskNumber], NULL, 0);
- return;
- }
-
- /* Refresh the menu state */
- UpdateVdmMenuDisks();
-}
-
-VOID EjectFloppy(IN ULONG DiskNumber)
-{
- ASSERT(DiskNumber < ARRAYSIZE(GlobalSettings.FloppyDisks));
-
- /* Unmount the disk */
- if (!UnmountDisk(FLOPPY_DISK, DiskNumber))
- DisplayMessage(L"An error happened when ejecting disk %d", DiskNumber);
-
- /* Free the old string */
- if (GlobalSettings.FloppyDisks[DiskNumber].Buffer)
- {
- RtlFreeUnicodeString(&GlobalSettings.FloppyDisks[DiskNumber]);
- RtlInitEmptyUnicodeString(&GlobalSettings.FloppyDisks[DiskNumber], NULL, 0);
- }
-
- /* Refresh the menu state */
- UpdateVdmMenuDisks();
-}
-
-
-VOID EmulatorPause(VOID)
-{
- /* Pause the VDM */
- VDDBlockUserHook();
- VgaRefreshDisplay();
- PauseEventThread();
-}
-
-VOID EmulatorResume(VOID)
-{
- /* Resume the VDM */
- ResumeEventThread();
- VgaRefreshDisplay();
- VDDResumeUserHook();
-}
-
-VOID EmulatorTerminate(VOID)
-{
- /* Stop the VDM */
- CpuUnsimulate(); // Halt the CPU
- VdmRunning = FALSE;
-}
-
-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;
-}
-
-VOID EmulatorCleanup(VOID)
-{
- DiskCtrlCleanup();
-
- VgaCleanup();
-
- /* Close the input thread handle */
- if (InputThread != NULL) CloseHandle(InputThread);
- InputThread = NULL;
-
- /* Close the task event */
- if (VdmTaskEvent != NULL) CloseHandle(VdmTaskEvent);
- VdmTaskEvent = NULL;
-
- PS2Cleanup();
-
- SpeakerCleanup();
- CmosCleanup();
- // PitCleanup();
- // PicCleanup();
-
- // DmaCleanup();
-
- CpuCleanup();
- MemCleanup();
-}
-
-
-
-VOID
-WINAPI
-VDDSimulate16(VOID)
-{
- CpuSimulate();
-}
-
-VOID
-WINAPI
-VDDTerminateVDM(VOID)
-{
- /* Stop the VDM */
- EmulatorTerminate();
-}
-
-/* EOF */
projects / reactos.git / blobdiff