703 lines
20 KiB
C
703 lines
20 KiB
C
/*
|
|
* DOS Virtual Machine
|
|
*
|
|
* Copyright 1998 Ove Kåven
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
* Note: This code hasn't been completely cleaned up yet.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <signal.h>
|
|
#ifdef HAVE_UNISTD_H
|
|
# include <unistd.h>
|
|
#endif
|
|
#ifdef HAVE_SYS_TIME_H
|
|
# include <sys/time.h>
|
|
#endif
|
|
#include <sys/types.h>
|
|
|
|
#include "wine/winbase16.h"
|
|
#include "wine/exception.h"
|
|
#include "windef.h"
|
|
#include "winbase.h"
|
|
#include "wingdi.h"
|
|
#include "winuser.h"
|
|
#include "winnt.h"
|
|
#include "wincon.h"
|
|
|
|
#include "msdos.h"
|
|
#include "file.h"
|
|
#include "miscemu.h"
|
|
#include "dosexe.h"
|
|
#include "dosvm.h"
|
|
#include "stackframe.h"
|
|
#include "wine/debug.h"
|
|
#include "excpt.h"
|
|
|
|
WINE_DEFAULT_DEBUG_CHANNEL(int);
|
|
WINE_DECLARE_DEBUG_CHANNEL(module);
|
|
WINE_DECLARE_DEBUG_CHANNEL(relay);
|
|
|
|
WORD DOSVM_psp = 0;
|
|
WORD DOSVM_retval = 0;
|
|
|
|
#ifdef HAVE_SYS_VM86_H
|
|
# include <sys/vm86.h>
|
|
#endif
|
|
#ifdef HAVE_SYS_MMAN_H
|
|
# include <sys/mman.h>
|
|
#endif
|
|
|
|
|
|
typedef struct _DOSEVENT {
|
|
int irq,priority;
|
|
DOSRELAY relay;
|
|
void *data;
|
|
struct _DOSEVENT *next;
|
|
} DOSEVENT, *LPDOSEVENT;
|
|
|
|
static CRITICAL_SECTION qcrit = CRITICAL_SECTION_INIT("DOSVM");
|
|
static struct _DOSEVENT *pending_event, *current_event;
|
|
static HANDLE event_notifier;
|
|
|
|
|
|
/***********************************************************************
|
|
* DOSVM_HasPendingEvents
|
|
*
|
|
* Return true if there are pending events that are not
|
|
* blocked by currently active event.
|
|
*/
|
|
static BOOL DOSVM_HasPendingEvents( void )
|
|
{
|
|
if (!pending_event)
|
|
return FALSE;
|
|
|
|
if (!current_event)
|
|
return TRUE;
|
|
|
|
if (pending_event->priority < current_event->priority)
|
|
return TRUE;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* DOSVM_SendOneEvent
|
|
*
|
|
* Process single pending event.
|
|
*
|
|
* This function should be called with queue critical section locked.
|
|
* The function temporarily releases the critical section if it is
|
|
* possible that internal interrupt handler or user procedure will
|
|
* be called. This is because we may otherwise get a deadlock if
|
|
* another thread is waiting for the same critical section.
|
|
*/
|
|
static void DOSVM_SendOneEvent( CONTEXT86 *context )
|
|
{
|
|
LPDOSEVENT event = pending_event;
|
|
|
|
/* Remove from pending events list. */
|
|
pending_event = event->next;
|
|
|
|
/* Process active event. */
|
|
if (event->irq >= 0)
|
|
{
|
|
BYTE intnum = (event->irq < 8) ?
|
|
(event->irq + 8) : (event->irq - 8 + 0x70);
|
|
|
|
/* Event is an IRQ, move it to current events list. */
|
|
event->next = current_event;
|
|
current_event = event;
|
|
|
|
TRACE( "Dispatching IRQ %d.\n", event->irq );
|
|
|
|
if (ISV86(context))
|
|
{
|
|
/*
|
|
* Note that if DOSVM_HardwareInterruptRM calls an internal
|
|
* interrupt directly, current_event might be cleared
|
|
* (and event freed) in this call.
|
|
*/
|
|
LeaveCriticalSection(&qcrit);
|
|
DOSVM_HardwareInterruptRM( context, intnum );
|
|
EnterCriticalSection(&qcrit);
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* This routine only modifies current context so it is
|
|
* not necessary to release critical section.
|
|
*/
|
|
DOSVM_HardwareInterruptPM( context, intnum );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Callback event. */
|
|
TRACE( "Dispatching callback event.\n" );
|
|
|
|
if (ISV86(context))
|
|
{
|
|
/*
|
|
* Call relay immediately in real mode.
|
|
*/
|
|
LeaveCriticalSection(&qcrit);
|
|
(*event->relay)( context, event->data );
|
|
EnterCriticalSection(&qcrit);
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* Force return to relay code. We do not want to
|
|
* call relay directly because we may be inside a signal handler.
|
|
*/
|
|
DOSVM_BuildCallFrame( context, event->relay, event->data );
|
|
}
|
|
|
|
free(event);
|
|
}
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* DOSVM_SendQueuedEvents
|
|
*
|
|
* As long as context instruction pointer stays unmodified,
|
|
* process all pending events that are not blocked by currently
|
|
* active event.
|
|
*
|
|
* This routine assumes that caller has already cleared TEB.vm86_pending
|
|
* and checked that interrupts are enabled.
|
|
*/
|
|
void DOSVM_SendQueuedEvents( CONTEXT86 *context )
|
|
{
|
|
DWORD old_cs = context->SegCs;
|
|
DWORD old_ip = context->Eip;
|
|
|
|
EnterCriticalSection(&qcrit);
|
|
|
|
TRACE( "Called in %s mode %s events pending (time=%ld)\n",
|
|
ISV86(context) ? "real" : "protected",
|
|
DOSVM_HasPendingEvents() ? "with" : "without",
|
|
GetTickCount() );
|
|
TRACE( "cs:ip=%04lx:%08lx, ss:sp=%04lx:%08lx\n",
|
|
context->SegCs, context->Eip, context->SegSs, context->Esp);
|
|
|
|
while (context->SegCs == old_cs &&
|
|
context->Eip == old_ip &&
|
|
DOSVM_HasPendingEvents())
|
|
{
|
|
DOSVM_SendOneEvent(context);
|
|
|
|
/*
|
|
* Event handling may have turned pending events flag on.
|
|
* We disable it here because this prevents some
|
|
* unnecessary calls to this function.
|
|
*/
|
|
NtCurrentTeb()->vm86_pending = 0;
|
|
}
|
|
|
|
#ifdef MZ_SUPPORTED
|
|
|
|
if (!ISV86(context) && context->SegCs == old_cs && context->Eip == old_ip)
|
|
{
|
|
/*
|
|
* Routine was called from DPMI but there was nothing to do.
|
|
* We force a dummy relay call here so that we don't get a race
|
|
* if signals are unblocked when we return to DPMI application.
|
|
*/
|
|
TRACE( "Called but there was nothing to do, calling NULL relay.\n" );
|
|
DOSVM_BuildCallFrame( context, NULL, NULL );
|
|
}
|
|
|
|
if (DOSVM_HasPendingEvents())
|
|
{
|
|
/*
|
|
* Interrupts disabled, but there are still
|
|
* pending events, make sure that pending flag is turned on.
|
|
*/
|
|
TRACE( "Another event is pending, setting VIP flag.\n" );
|
|
NtCurrentTeb()->vm86_pending |= VIP_MASK;
|
|
}
|
|
|
|
#else
|
|
|
|
FIXME("No DOS .exe file support on this platform (yet)\n");
|
|
|
|
#endif /* MZ_SUPPORTED */
|
|
|
|
LeaveCriticalSection(&qcrit);
|
|
}
|
|
|
|
|
|
#ifdef MZ_SUPPORTED
|
|
/***********************************************************************
|
|
* QueueEvent (WINEDOS.@)
|
|
*/
|
|
void WINAPI DOSVM_QueueEvent( INT irq, INT priority, DOSRELAY relay, LPVOID data)
|
|
{
|
|
LPDOSEVENT event, cur, prev;
|
|
BOOL old_pending;
|
|
|
|
if (MZ_Current()) {
|
|
event = malloc(sizeof(DOSEVENT));
|
|
if (!event) {
|
|
ERR("out of memory allocating event entry\n");
|
|
return;
|
|
}
|
|
event->irq = irq; event->priority = priority;
|
|
event->relay = relay; event->data = data;
|
|
|
|
EnterCriticalSection(&qcrit);
|
|
old_pending = DOSVM_HasPendingEvents();
|
|
|
|
/* insert event into linked list, in order *after*
|
|
* all earlier events of higher or equal priority */
|
|
cur = pending_event; prev = NULL;
|
|
while (cur && cur->priority<=priority) {
|
|
prev = cur;
|
|
cur = cur->next;
|
|
}
|
|
event->next = cur;
|
|
if (prev) prev->next = event;
|
|
else pending_event = event;
|
|
|
|
if (!old_pending && DOSVM_HasPendingEvents()) {
|
|
TRACE("new event queued, signalling (time=%ld)\n", GetTickCount());
|
|
|
|
/* Alert VM86 thread about the new event. */
|
|
kill(dosvm_pid,SIGUSR2);
|
|
|
|
/* Wake up DOSVM_Wait so that it can serve pending events. */
|
|
SetEvent(event_notifier);
|
|
} else {
|
|
TRACE("new event queued (time=%ld)\n", GetTickCount());
|
|
}
|
|
|
|
LeaveCriticalSection(&qcrit);
|
|
} else {
|
|
/* DOS subsystem not running */
|
|
/* (this probably means that we're running a win16 app
|
|
* which uses DPMI to thunk down to DOS services) */
|
|
if (irq<0) {
|
|
/* callback event, perform it with dummy context */
|
|
CONTEXT86 context;
|
|
memset(&context,0,sizeof(context));
|
|
(*relay)(&context,data);
|
|
} else {
|
|
ERR("IRQ without DOS task: should not happen\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
static void DOSVM_ProcessConsole(void)
|
|
{
|
|
INPUT_RECORD msg;
|
|
DWORD res;
|
|
BYTE scan, ascii;
|
|
|
|
if (ReadConsoleInputA(GetStdHandle(STD_INPUT_HANDLE),&msg,1,&res)) {
|
|
switch (msg.EventType) {
|
|
case KEY_EVENT:
|
|
scan = msg.Event.KeyEvent.wVirtualScanCode;
|
|
ascii = msg.Event.KeyEvent.uChar.AsciiChar;
|
|
TRACE("scan %02x, ascii %02x\n", scan, ascii);
|
|
|
|
/* set the "break" (release) flag if key released */
|
|
if (!msg.Event.KeyEvent.bKeyDown) scan |= 0x80;
|
|
|
|
/* check whether extended bit is set,
|
|
* and if so, queue the extension prefix */
|
|
if (msg.Event.KeyEvent.dwControlKeyState & ENHANCED_KEY) {
|
|
DOSVM_Int09SendScan(0xE0,0);
|
|
}
|
|
DOSVM_Int09SendScan(scan, ascii);
|
|
break;
|
|
case MOUSE_EVENT:
|
|
DOSVM_Int33Console(&msg.Event.MouseEvent);
|
|
break;
|
|
case WINDOW_BUFFER_SIZE_EVENT:
|
|
FIXME("unhandled WINDOW_BUFFER_SIZE_EVENT.\n");
|
|
break;
|
|
case MENU_EVENT:
|
|
FIXME("unhandled MENU_EVENT.\n");
|
|
break;
|
|
case FOCUS_EVENT:
|
|
FIXME("unhandled FOCUS_EVENT.\n");
|
|
break;
|
|
default:
|
|
FIXME("unknown console event: %d\n", msg.EventType);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void DOSVM_ProcessMessage(MSG *msg)
|
|
{
|
|
BYTE scan = 0;
|
|
|
|
TRACE("got message %04x, wparam=%08x, lparam=%08lx\n",msg->message,msg->wParam,msg->lParam);
|
|
if ((msg->message>=WM_MOUSEFIRST)&&
|
|
(msg->message<=WM_MOUSELAST)) {
|
|
DOSVM_Int33Message(msg->message,msg->wParam,msg->lParam);
|
|
} else {
|
|
switch (msg->message) {
|
|
case WM_KEYUP:
|
|
scan = 0x80;
|
|
case WM_KEYDOWN:
|
|
scan |= (msg->lParam >> 16) & 0x7f;
|
|
|
|
/* check whether extended bit is set,
|
|
* and if so, queue the extension prefix */
|
|
if (msg->lParam & 0x1000000) {
|
|
/* FIXME: some keys (function keys) have
|
|
* extended bit set even when they shouldn't,
|
|
* should check for them */
|
|
DOSVM_Int09SendScan(0xE0,0);
|
|
}
|
|
DOSVM_Int09SendScan(scan,0);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* DOSVM_Wait
|
|
*
|
|
* Wait for asynchronous events. This routine temporarily enables
|
|
* interrupts and waits until some asynchronous event has been
|
|
* processed.
|
|
*/
|
|
void WINAPI DOSVM_Wait( CONTEXT86 *waitctx )
|
|
{
|
|
if (DOSVM_HasPendingEvents())
|
|
{
|
|
CONTEXT86 context = *waitctx;
|
|
|
|
/*
|
|
* If DOSVM_Wait is called from protected mode we emulate
|
|
* interrupt reflection and convert context into real mode context.
|
|
* This is actually the correct thing to do as long as DOSVM_Wait
|
|
* is only called from those interrupt functions that DPMI reflects
|
|
* to real mode.
|
|
*
|
|
* FIXME: Need to think about where to place real mode stack.
|
|
* FIXME: If DOSVM_Wait calls are nested stack gets corrupted.
|
|
* Can this really happen?
|
|
*/
|
|
if (!ISV86(&context))
|
|
{
|
|
context.EFlags |= 0x00020000;
|
|
context.SegSs = 0xffff;
|
|
context.Esp = 0;
|
|
}
|
|
|
|
context.EFlags |= VIF_MASK;
|
|
context.SegCs = 0;
|
|
context.Eip = 0;
|
|
|
|
DOSVM_SendQueuedEvents(&context);
|
|
|
|
if(context.SegCs || context.Eip)
|
|
DPMI_CallRMProc( &context, NULL, 0, TRUE );
|
|
}
|
|
else
|
|
{
|
|
HANDLE objs[2];
|
|
int objc = DOSVM_IsWin16() ? 2 : 1;
|
|
DWORD waitret;
|
|
|
|
objs[0] = event_notifier;
|
|
objs[1] = GetStdHandle(STD_INPUT_HANDLE);
|
|
|
|
waitret = MsgWaitForMultipleObjects( objc, objs, FALSE,
|
|
INFINITE, QS_ALLINPUT );
|
|
|
|
if (waitret == WAIT_OBJECT_0)
|
|
{
|
|
/*
|
|
* New pending event has been queued, we ignore it
|
|
* here because it will be processed on next call to
|
|
* DOSVM_Wait.
|
|
*/
|
|
}
|
|
else if (objc == 2 && waitret == WAIT_OBJECT_0 + 1)
|
|
{
|
|
DOSVM_ProcessConsole();
|
|
}
|
|
else if (waitret == WAIT_OBJECT_0 + objc)
|
|
{
|
|
MSG msg;
|
|
while (PeekMessageA(&msg,0,0,0,PM_REMOVE|PM_NOYIELD))
|
|
{
|
|
/* got a message */
|
|
DOSVM_ProcessMessage(&msg);
|
|
/* we don't need a TranslateMessage here */
|
|
DispatchMessageA(&msg);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
ERR_(module)( "dosvm wait error=%ld\n", GetLastError() );
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
DWORD WINAPI DOSVM_Loop( HANDLE hThread )
|
|
{
|
|
HANDLE objs[2];
|
|
MSG msg;
|
|
DWORD waitret;
|
|
|
|
objs[0] = GetStdHandle(STD_INPUT_HANDLE);
|
|
objs[1] = hThread;
|
|
|
|
for(;;) {
|
|
TRACE_(int)("waiting for action\n");
|
|
waitret = MsgWaitForMultipleObjects(2, objs, FALSE, INFINITE, QS_ALLINPUT);
|
|
if (waitret == WAIT_OBJECT_0) {
|
|
DOSVM_ProcessConsole();
|
|
}
|
|
else if (waitret == WAIT_OBJECT_0 + 1) {
|
|
DWORD rv;
|
|
if(!GetExitCodeThread(hThread, &rv)) {
|
|
ERR("Failed to get thread exit code!\n");
|
|
rv = 0;
|
|
}
|
|
return rv;
|
|
}
|
|
else if (waitret == WAIT_OBJECT_0 + 2) {
|
|
while (PeekMessageA(&msg,0,0,0,PM_REMOVE)) {
|
|
if (msg.hwnd) {
|
|
/* it's a window message */
|
|
DOSVM_ProcessMessage(&msg);
|
|
DispatchMessageA(&msg);
|
|
} else {
|
|
/* it's a thread message */
|
|
switch (msg.message) {
|
|
case WM_QUIT:
|
|
/* stop this madness!! */
|
|
return 0;
|
|
case WM_USER:
|
|
/* run passed procedure in this thread */
|
|
/* (sort of like APC, but we signal the completion) */
|
|
{
|
|
DOS_SPC *spc = (DOS_SPC *)msg.lParam;
|
|
TRACE_(int)("calling %p with arg %08lx\n", spc->proc, spc->arg);
|
|
(spc->proc)(spc->arg);
|
|
TRACE_(int)("done, signalling event %x\n", msg.wParam);
|
|
SetEvent( (HANDLE)msg.wParam );
|
|
}
|
|
break;
|
|
default:
|
|
DispatchMessageA(&msg);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
ERR_(int)("MsgWaitForMultipleObjects returned unexpected value.\n");
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
static WINE_EXCEPTION_FILTER(exception_handler)
|
|
{
|
|
EXCEPTION_RECORD *rec = GetExceptionInformation()->ExceptionRecord;
|
|
CONTEXT *context = GetExceptionInformation()->ContextRecord;
|
|
int arg = rec->ExceptionInformation[0];
|
|
BOOL ret;
|
|
|
|
switch(rec->ExceptionCode) {
|
|
case EXCEPTION_VM86_INTx:
|
|
if (TRACE_ON(relay)) {
|
|
DPRINTF("Call DOS int 0x%02x ret=%04lx:%04lx\n",
|
|
arg, context->SegCs, context->Eip );
|
|
DPRINTF(" eax=%08lx ebx=%08lx ecx=%08lx edx=%08lx esi=%08lx edi=%08lx\n",
|
|
context->Eax, context->Ebx, context->Ecx, context->Edx,
|
|
context->Esi, context->Edi );
|
|
DPRINTF(" ebp=%08lx esp=%08lx ds=%04lx es=%04lx fs=%04lx gs=%04lx flags=%08lx\n",
|
|
context->Ebp, context->Esp, context->SegDs, context->SegEs,
|
|
context->SegFs, context->SegGs, context->EFlags );
|
|
}
|
|
ret = DOSVM_EmulateInterruptRM( context, arg );
|
|
if (TRACE_ON(relay)) {
|
|
DPRINTF("Ret DOS int 0x%02x ret=%04lx:%04lx\n",
|
|
arg, context->SegCs, context->Eip );
|
|
DPRINTF(" eax=%08lx ebx=%08lx ecx=%08lx edx=%08lx esi=%08lx edi=%08lx\n",
|
|
context->Eax, context->Ebx, context->Ecx, context->Edx,
|
|
context->Esi, context->Edi );
|
|
DPRINTF(" ebp=%08lx esp=%08lx ds=%04lx es=%04lx fs=%04lx gs=%04lx flags=%08lx\n",
|
|
context->Ebp, context->Esp, context->SegDs, context->SegEs,
|
|
context->SegFs, context->SegGs, context->EFlags );
|
|
}
|
|
return ret ? EXCEPTION_CONTINUE_EXECUTION : EXCEPTION_EXECUTE_HANDLER;
|
|
|
|
case EXCEPTION_VM86_STI:
|
|
/* case EXCEPTION_VM86_PICRETURN: */
|
|
if (!ISV86(context))
|
|
ERR( "Protected mode STI caught by real mode handler!\n" );
|
|
|
|
context->EFlags |= VIF_MASK;
|
|
context->EFlags &= ~VIP_MASK;
|
|
DOSVM_SendQueuedEvents(context);
|
|
return EXCEPTION_CONTINUE_EXECUTION;
|
|
}
|
|
return EXCEPTION_CONTINUE_SEARCH;
|
|
}
|
|
|
|
int WINAPI DOSVM_Enter( CONTEXT86 *context )
|
|
{
|
|
/* Some callers forget to turn V86_FLAG on. */
|
|
context->EFlags |= V86_FLAG;
|
|
|
|
__TRY
|
|
{
|
|
__wine_enter_vm86( context );
|
|
TRACE_(module)( "vm86 returned: %s\n", strerror(errno) );
|
|
}
|
|
__EXCEPT(exception_handler)
|
|
{
|
|
TRACE_(module)( "leaving vm86 mode\n" );
|
|
}
|
|
__ENDTRY
|
|
|
|
return 0;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* OutPIC (WINEDOS.@)
|
|
*/
|
|
void WINAPI DOSVM_PIC_ioport_out( WORD port, BYTE val)
|
|
{
|
|
LPDOSEVENT event;
|
|
|
|
if ((port==0x20) && (val==0x20)) {
|
|
EnterCriticalSection(&qcrit);
|
|
if (current_event) {
|
|
/* EOI (End Of Interrupt) */
|
|
TRACE("received EOI for current IRQ, clearing\n");
|
|
event = current_event;
|
|
current_event = event->next;
|
|
if (event->relay)
|
|
(*event->relay)(NULL,event->data);
|
|
free(event);
|
|
|
|
if (DOSVM_HasPendingEvents()) {
|
|
/* another event is pending, which we should probably
|
|
* be able to process now */
|
|
TRACE("another event pending, setting flag\n");
|
|
NtCurrentTeb()->vm86_pending |= VIP_MASK;
|
|
}
|
|
} else {
|
|
WARN("EOI without active IRQ\n");
|
|
}
|
|
LeaveCriticalSection(&qcrit);
|
|
} else {
|
|
FIXME("unrecognized PIC command %02x\n",val);
|
|
}
|
|
}
|
|
|
|
#else /* !MZ_SUPPORTED */
|
|
|
|
/***********************************************************************
|
|
* Enter (WINEDOS.@)
|
|
*/
|
|
INT WINAPI DOSVM_Enter( CONTEXT86 *context )
|
|
{
|
|
ERR_(module)("DOS realmode not supported on this architecture!\n");
|
|
return -1;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* Wait (WINEDOS.@)
|
|
*/
|
|
void WINAPI DOSVM_Wait( CONTEXT86 *waitctx ) { }
|
|
|
|
/***********************************************************************
|
|
* OutPIC (WINEDOS.@)
|
|
*/
|
|
void WINAPI DOSVM_PIC_ioport_out( WORD port, BYTE val) {}
|
|
|
|
/***********************************************************************
|
|
* QueueEvent (WINEDOS.@)
|
|
*/
|
|
void WINAPI DOSVM_QueueEvent( INT irq, INT priority, DOSRELAY relay, LPVOID data)
|
|
{
|
|
if (irq<0) {
|
|
/* callback event, perform it with dummy context */
|
|
CONTEXT86 context;
|
|
memset(&context,0,sizeof(context));
|
|
(*relay)(&context,data);
|
|
} else {
|
|
ERR("IRQ without DOS task: should not happen\n");
|
|
}
|
|
}
|
|
|
|
#endif /* MZ_SUPPORTED */
|
|
|
|
|
|
/**********************************************************************
|
|
* DOSVM_AcknowledgeIRQ
|
|
*
|
|
* This routine should be called by all internal IRQ handlers.
|
|
*/
|
|
void WINAPI DOSVM_AcknowledgeIRQ( CONTEXT86 *context )
|
|
{
|
|
/*
|
|
* Send EOI to PIC.
|
|
*/
|
|
DOSVM_PIC_ioport_out( 0x20, 0x20 );
|
|
|
|
/*
|
|
* Protected mode IRQ handlers are supposed
|
|
* to turn VIF flag on before they return.
|
|
*/
|
|
if (!ISV86(context))
|
|
NtCurrentTeb()->dpmi_vif = 1;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* DllMain (DOSVM.Init)
|
|
*/
|
|
BOOL WINAPI DllMain( HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved )
|
|
{
|
|
TRACE_(module)("(%p,%ld,%p)\n", hinstDLL, fdwReason, lpvReserved);
|
|
|
|
if (fdwReason == DLL_PROCESS_ATTACH)
|
|
{
|
|
DisableThreadLibraryCalls(hinstDLL);
|
|
DOSVM_InitSegments();
|
|
|
|
event_notifier = CreateEventA(NULL, FALSE, FALSE, NULL);
|
|
if(!event_notifier)
|
|
ERR("Failed to create event object!\n");
|
|
}
|
|
return TRUE;
|
|
}
|