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audk/EmulatorPkg/Win/Host/WinThunk.c

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/**@file
Copyright (c) 2006 - 2023, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
Module Name:
WinNtThunk.c
Abstract:
Since the SEC is the only windows program in our emulation we
must use a Tiano mechanism to export operating system services
to other modules. This is the role of the EMU_THUNK_PROTOCOL.
The gEmuThunkProtocol exists so that a change to EMU_THUNK_PROTOCOL
will cause an error in initializing the array if all the member functions
are not added. It looks like adding a element to end and not initializing
it may cause the table to be initalized with the members at the end being
set to zero. This is bad as jumping to zero will case EmulatorPkg to crash.
**/
#include "WinHost.h"
STATIC BOOLEAN mEmulatorStdInConfigured = FALSE;
STATIC DWORD mOldStdInMode;
#if defined (NTDDI_VERSION) && defined (NTDDI_WIN10_TH2) && (NTDDI_VERSION > NTDDI_WIN10_TH2)
STATIC DWORD mOldStdOutMode;
#endif
UINTN
SecWriteStdErr (
IN UINT8 *Buffer,
IN UINTN NumberOfBytes
)
{
BOOL Success;
DWORD CharCount;
CharCount = (DWORD)NumberOfBytes;
Success = WriteFile (
GetStdHandle (STD_ERROR_HANDLE),
Buffer,
CharCount,
&CharCount,
NULL
);
return Success ? CharCount : 0;
}
EFI_STATUS
SecConfigStdIn (
VOID
)
{
BOOL Success;
DWORD Mode;
Success = GetConsoleMode (GetStdHandle (STD_INPUT_HANDLE), &Mode);
if (Success) {
if (!mEmulatorStdInConfigured) {
//
// Save the original state of the console so it can be restored on exit
//
mOldStdInMode = Mode;
}
//
// Disable buffer (line input), echo, mouse, window
//
Mode &= ~(ENABLE_LINE_INPUT | ENABLE_ECHO_INPUT | ENABLE_MOUSE_INPUT | ENABLE_WINDOW_INPUT);
#if defined (NTDDI_VERSION) && defined (NTDDI_WIN10_TH2) && (NTDDI_VERSION > NTDDI_WIN10_TH2)
//
// Enable virtual terminal input for Win10 above TH2
//
Mode |= ENABLE_VIRTUAL_TERMINAL_INPUT;
#endif
Success = SetConsoleMode (GetStdHandle (STD_INPUT_HANDLE), Mode);
}
#if defined (NTDDI_VERSION) && defined (NTDDI_WIN10_TH2) && (NTDDI_VERSION > NTDDI_WIN10_TH2)
//
// Enable terminal mode for Win10 above TH2
//
if (Success) {
Success = GetConsoleMode (GetStdHandle (STD_OUTPUT_HANDLE), &Mode);
if (!mEmulatorStdInConfigured) {
//
// Save the original state of the console so it can be restored on exit
//
mOldStdOutMode = Mode;
}
if (Success) {
Success = SetConsoleMode (
GetStdHandle (STD_OUTPUT_HANDLE),
Mode | ENABLE_VIRTUAL_TERMINAL_PROCESSING | DISABLE_NEWLINE_AUTO_RETURN
);
}
}
#endif
if (Success) {
mEmulatorStdInConfigured = TRUE;
}
return Success ? EFI_SUCCESS : EFI_DEVICE_ERROR;
}
UINTN
SecWriteStdOut (
IN UINT8 *Buffer,
IN UINTN NumberOfBytes
)
{
BOOL Success;
DWORD CharCount;
CharCount = (DWORD)NumberOfBytes;
Success = WriteFile (
GetStdHandle (STD_OUTPUT_HANDLE),
Buffer,
CharCount,
&CharCount,
NULL
);
return Success ? CharCount : 0;
}
BOOLEAN
SecPollStdIn (
VOID
)
{
BOOL Success;
INPUT_RECORD Record;
DWORD RecordNum;
do {
Success = GetNumberOfConsoleInputEvents (GetStdHandle (STD_INPUT_HANDLE), &RecordNum);
if (!Success || (RecordNum == 0)) {
break;
}
Success = PeekConsoleInput (
GetStdHandle (STD_INPUT_HANDLE),
&Record,
1,
&RecordNum
);
if (Success && (RecordNum == 1)) {
if ((Record.EventType == KEY_EVENT) && Record.Event.KeyEvent.bKeyDown) {
return TRUE;
} else {
//
// Consume the non-key event.
//
Success = ReadConsoleInput (
GetStdHandle (STD_INPUT_HANDLE),
&Record,
1,
&RecordNum
);
}
}
} while (Success);
return FALSE;
}
UINTN
SecReadStdIn (
IN UINT8 *Buffer,
IN UINTN NumberOfBytes
)
{
BOOL Success;
INPUT_RECORD Record;
DWORD RecordNum;
UINTN BytesReturn;
if (!SecPollStdIn ()) {
return 0;
}
Success = ReadConsoleInput (
GetStdHandle (STD_INPUT_HANDLE),
&Record,
1,
&RecordNum
);
ASSERT (Success && (RecordNum == 1) && (Record.EventType == KEY_EVENT) && (Record.Event.KeyEvent.bKeyDown));
NumberOfBytes = MIN (Record.Event.KeyEvent.wRepeatCount, NumberOfBytes);
BytesReturn = NumberOfBytes;
while (NumberOfBytes-- != 0) {
Buffer[NumberOfBytes] = Record.Event.KeyEvent.uChar.AsciiChar;
}
return BytesReturn;
}
VOID *
SecAlloc (
IN UINTN Size
)
{
return malloc ((size_t)Size);
}
BOOLEAN
SecFree (
IN VOID *Ptr
)
{
if (EfiSystemMemoryRange (Ptr)) {
// If an address range is in the EFI memory map it was alloced via EFI.
// So don't free those ranges and let the caller know.
return FALSE;
}
free (Ptr);
return TRUE;
}
//
// Define a global that we can use to shut down the NT timer thread when
// the timer is canceled.
//
BOOLEAN mCancelTimerThread = FALSE;
//
// The notification function to call on every timer interrupt
//
EMU_SET_TIMER_CALLBACK *mTimerNotifyFunction = NULL;
//
// The thread handle for this driver
//
HANDLE mNtMainThreadHandle;
//
// The timer value from the last timer interrupt
//
UINT32 mNtLastTick;
//
// Critical section used to update varibles shared between the main thread and
// the timer interrupt thread.
//
CRITICAL_SECTION mNtCriticalSection;
//
// Worker Functions
//
UINT mMMTimerThreadID = 0;
volatile BOOLEAN mInterruptEnabled = FALSE;
VOID
CALLBACK
MMTimerThread (
UINT wTimerID,
UINT msg,
DWORD_PTR dwUser,
DWORD_PTR dw1,
DWORD_PTR dw2
)
{
UINT32 CurrentTick;
UINT32 Delta;
if (!mCancelTimerThread) {
//
// Suspend the main thread until we are done.
// Enter the critical section before suspending
// and leave the critical section after resuming
// to avoid deadlock between main and timer thread.
//
EnterCriticalSection (&mNtCriticalSection);
SuspendThread (mNtMainThreadHandle);
//
// If the timer thread is being canceled, then bail immediately.
// We check again here because there's a small window of time from when
// this thread was kicked off and when we suspended the main thread above.
//
if (mCancelTimerThread) {
ResumeThread (mNtMainThreadHandle);
LeaveCriticalSection (&mNtCriticalSection);
timeKillEvent (wTimerID);
mMMTimerThreadID = 0;
return;
}
while (!mInterruptEnabled) {
//
// Resume the main thread
//
ResumeThread (mNtMainThreadHandle);
LeaveCriticalSection (&mNtCriticalSection);
//
// Wait for interrupts to be enabled.
//
while (!mInterruptEnabled) {
Sleep (1);
}
//
// Suspend the main thread until we are done
//
EnterCriticalSection (&mNtCriticalSection);
SuspendThread (mNtMainThreadHandle);
}
//
// Get the current system tick
//
CurrentTick = GetTickCount ();
Delta = CurrentTick - mNtLastTick;
mNtLastTick = CurrentTick;
//
// If delay was more then 1 second, ignore it (probably debugging case)
//
if (Delta < 1000) {
//
// Only invoke the callback function if a Non-NULL handler has been
// registered. Assume all other handlers are legal.
//
if (mTimerNotifyFunction != NULL) {
mTimerNotifyFunction (Delta);
}
}
//
// Resume the main thread
//
ResumeThread (mNtMainThreadHandle);
LeaveCriticalSection (&mNtCriticalSection);
} else {
timeKillEvent (wTimerID);
mMMTimerThreadID = 0;
}
}
VOID
SecSetTimer (
IN UINT64 TimerPeriod,
IN EMU_SET_TIMER_CALLBACK Callback
)
{
//
// If TimerPeriod is 0, then the timer thread should be canceled
//
if (TimerPeriod == 0) {
//
// Cancel the timer thread
//
EnterCriticalSection (&mNtCriticalSection);
mCancelTimerThread = TRUE;
LeaveCriticalSection (&mNtCriticalSection);
//
// Wait for the timer thread to exit
//
if (mMMTimerThreadID != 0) {
timeKillEvent (mMMTimerThreadID);
mMMTimerThreadID = 0;
}
} else {
//
// If the TimerPeriod is valid, then create and/or adjust the period of the timer thread
//
EnterCriticalSection (&mNtCriticalSection);
mCancelTimerThread = FALSE;
LeaveCriticalSection (&mNtCriticalSection);
//
// Get the starting tick location if we are just starting the timer thread
//
mNtLastTick = GetTickCount ();
if (mMMTimerThreadID) {
timeKillEvent (mMMTimerThreadID);
}
SetThreadPriority (
GetCurrentThread (),
THREAD_PRIORITY_HIGHEST
);
mMMTimerThreadID = timeSetEvent (
(UINT)TimerPeriod,
0,
MMTimerThread,
(DWORD_PTR)NULL,
TIME_PERIODIC | TIME_KILL_SYNCHRONOUS | TIME_CALLBACK_FUNCTION
);
}
mTimerNotifyFunction = Callback;
}
VOID
SecInitializeThunk (
VOID
)
{
InitializeCriticalSection (&mNtCriticalSection);
DuplicateHandle (
GetCurrentProcess (),
GetCurrentThread (),
GetCurrentProcess (),
&mNtMainThreadHandle,
0,
FALSE,
DUPLICATE_SAME_ACCESS
);
}
VOID
SecEnableInterrupt (
VOID
)
{
mInterruptEnabled = TRUE;
}
VOID
SecDisableInterrupt (
VOID
)
{
mInterruptEnabled = FALSE;
}
UINT64
SecQueryPerformanceFrequency (
VOID
)
{
// Hard code to nanoseconds
return 1000000000ULL;
}
UINT64
SecQueryPerformanceCounter (
VOID
)
{
return 0;
}
VOID
SecSleep (
IN UINT64 Nanoseconds
)
{
Sleep ((DWORD)DivU64x32 (Nanoseconds, 1000000));
}
VOID
SecCpuSleep (
VOID
)
{
Sleep (1);
}
VOID
SecExit (
UINTN Status
)
{
if (mEmulatorStdInConfigured) {
//
// Reset the console back to its original state
//
#if defined (NTDDI_VERSION) && defined (NTDDI_WIN10_TH2) && (NTDDI_VERSION > NTDDI_WIN10_TH2)
BOOL Success = SetConsoleMode (GetStdHandle (STD_INPUT_HANDLE), mOldStdInMode);
if (Success) {
SetConsoleMode (GetStdHandle (STD_OUTPUT_HANDLE), mOldStdOutMode);
}
#else
SetConsoleMode (GetStdHandle (STD_INPUT_HANDLE), mOldStdInMode);
#endif
}
exit ((int)Status);
}
VOID
SecGetTime (
OUT EFI_TIME *Time,
OUT EFI_TIME_CAPABILITIES *Capabilities OPTIONAL
)
{
SYSTEMTIME SystemTime;
TIME_ZONE_INFORMATION TimeZone;
GetLocalTime (&SystemTime);
GetTimeZoneInformation (&TimeZone);
Time->Year = (UINT16)SystemTime.wYear;
Time->Month = (UINT8)SystemTime.wMonth;
Time->Day = (UINT8)SystemTime.wDay;
Time->Hour = (UINT8)SystemTime.wHour;
Time->Minute = (UINT8)SystemTime.wMinute;
Time->Second = (UINT8)SystemTime.wSecond;
Time->Nanosecond = (UINT32)(SystemTime.wMilliseconds * 1000000);
Time->TimeZone = (INT16)TimeZone.Bias;
if (Capabilities != NULL) {
Capabilities->Resolution = 1;
Capabilities->Accuracy = 50000000;
Capabilities->SetsToZero = FALSE;
}
Time->Daylight = 0;
if (TimeZone.StandardDate.wMonth) {
Time->Daylight = (UINT8)TimeZone.StandardDate.wMonth;
}
}
EFI_STATUS
SecSetTime (
IN EFI_TIME *Time
)
{
TIME_ZONE_INFORMATION TimeZone;
SYSTEMTIME SystemTime;
BOOL Flag;
//
// Set Daylight savings time information and Time Zone
//
GetTimeZoneInformation (&TimeZone);
TimeZone.StandardDate.wMonth = Time->Daylight;
TimeZone.Bias = Time->TimeZone;
Flag = SetTimeZoneInformation (&TimeZone);
if (!Flag) {
return EFI_DEVICE_ERROR;
}
SystemTime.wYear = Time->Year;
SystemTime.wMonth = Time->Month;
SystemTime.wDay = Time->Day;
SystemTime.wHour = Time->Hour;
SystemTime.wMinute = Time->Minute;
SystemTime.wSecond = Time->Second;
SystemTime.wMilliseconds = (INT16)(Time->Nanosecond / 1000000);
Flag = SetLocalTime (&SystemTime);
if (!Flag) {
return EFI_DEVICE_ERROR;
} else {
return EFI_SUCCESS;
}
}
EMU_THUNK_PROTOCOL gEmuThunkProtocol = {
SecWriteStdErr,
SecConfigStdIn,
SecWriteStdOut,
SecReadStdIn,
SecPollStdIn,
SecAlloc,
NULL,
SecFree,
SecUefiImageGetEntryPoint,
UefiImageLoaderRelocateImageExtraAction,
UefiImageLoaderUnloadImageExtraAction,
SecEnableInterrupt,
SecDisableInterrupt,
SecQueryPerformanceFrequency,
SecQueryPerformanceCounter,
SecSleep,
SecCpuSleep,
SecExit,
SecGetTime,
SecSetTime,
SecSetTimer,
GetNextThunkProtocol
};
#pragma warning(default : 4996)
#pragma warning(default : 4232)
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