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DOS support restructure. The DOS virtual machine is now a set of

Browse Source 
threads running within Wine's own address space, obsoleting the old
dosmod module.
This commit is contained in:
Ove Kaaven 2002-01-06 18:34:02 +00:00 committed by Alexandre Julliard
parent 4eb0bebd90
commit a814c4ef08
3 changed files with 233 additions and 416 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

415
dlls/winedos/dosvm.c
View File

@ -31,7 +31,7 @@
#include "file.h"
#include "miscemu.h"
#include "dosexe.h"
#include "../../loader/dos/dosmod.h"
#include "dosvm.h"
#include "stackframe.h"
#include "debugtools.h"
@ -67,68 +67,11 @@ typedef struct _DOSEVENT {
struct _DOSEVENT *next;
} DOSEVENT, *LPDOSEVENT;
static CRITICAL_SECTION qcrit = CRITICAL_SECTION_INIT("DOSVM");
static struct _DOSEVENT *pending_event, *current_event;
static int sig_sent, entered;
static int sig_sent;
static CONTEXT86 *current_context;
/* from module.c */
extern int read_pipe, write_pipe;
extern HANDLE hReadPipe;
extern pid_t dosmod_pid;
static void do_exception( int signal, CONTEXT86 *context )
{
EXCEPTION_RECORD rec;
if ((signal == SIGTRAP) || (signal == SIGHUP))
{
rec.ExceptionCode = EXCEPTION_BREAKPOINT;
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
}
else
{
rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION; /* generic error */
rec.ExceptionFlags = EH_NONCONTINUABLE;
}
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context->Eip;
rec.NumberParameters = 0;
EXC_RtlRaiseException( &rec, context );
}
static void DOSVM_Dump( int fn, int sig, struct vm86plus_struct*VM86 )
{
BYTE*inst;
int x;
switch (VM86_TYPE(fn)) {
case VM86_SIGNAL:
printf("Trapped signal %d\n",sig); break;
case VM86_UNKNOWN:
printf("Trapped unhandled GPF\n"); break;
case VM86_INTx:
printf("Trapped INT %02x\n",VM86_ARG(fn)); break;
case VM86_STI:
printf("Trapped STI\n"); break;
case VM86_PICRETURN:
printf("Trapped due to pending PIC request\n"); break;
case VM86_TRAP:
printf("Trapped debug request\n"); break;
default:
printf("Trapped unknown VM86 type %d arg %d\n",VM86_TYPE(fn),VM86_ARG(fn)); break;
}
#define REGS VM86->regs
fprintf(stderr,"AX=%04lX CX=%04lX DX=%04lX BX=%04lX\n",REGS.eax,REGS.ecx,REGS.edx,REGS.ebx);
fprintf(stderr,"SI=%04lX DI=%04lX SP=%04lX BP=%04lX\n",REGS.esi,REGS.edi,REGS.esp,REGS.ebp);
fprintf(stderr,"CS=%04X DS=%04X ES=%04X SS=%04X\n",REGS.cs,REGS.ds,REGS.es,REGS.ss);
fprintf(stderr,"IP=%04lX EFLAGS=%08lX\n",REGS.eip,REGS.eflags);
inst = PTR_REAL_TO_LIN( REGS.cs, REGS.eip );
#undef REGS
printf("Opcodes:");
for (x=0; x<8; x++) printf(" %02x",inst[x]);
printf("\n");
}
static int DOSVM_SimulateInt( int vect, CONTEXT86 *context, BOOL inwine )
{
FARPROC16 handler=DOSVM_GetRMHandler(vect);
@ -160,6 +103,8 @@ static int DOSVM_SimulateInt( int vect, CONTEXT86 *context, BOOL inwine )
WORD*stack= PTR_REAL_TO_LIN( context->SegSs, context->Esp );
WORD flag=LOWORD(context->EFlags);
TRACE_(int)("invoking hooked interrupt %02x at %04x:%04x\n", vect,
SELECTOROF(handler), OFFSETOF(handler));
if (IF_ENABLED(context)) flag|=IF_MASK;
else flag&=~IF_MASK;
@ -221,7 +166,8 @@ void WINAPI DOSVM_QueueEvent( INT irq, INT priority, DOSRELAY relay, LPVOID data
{
LPDOSEVENT event, cur, prev;
if (entered) {
if (current_context) {
EnterCriticalSection(&qcrit);
event = malloc(sizeof(DOSEVENT));
if (!event) {
ERR("out of memory allocating event entry\n");
@ -240,15 +186,16 @@ void WINAPI DOSVM_QueueEvent( INT irq, INT priority, DOSRELAY relay, LPVOID data
event->next = cur;
if (prev) prev->next = event;
else pending_event = event;
/* get dosmod's attention to the new event, if necessary */
/* alert the vm86 about the new event */
if (!sig_sent) {
TRACE("new event queued, signalling dosmod\n");
kill(dosmod_pid,SIGUSR2);
TRACE("new event queued, signalling (time=%ld)\n", GetTickCount());
kill(dosvm_pid,SIGUSR2);
sig_sent++;
} else {
TRACE("new event queued\n");
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
@ -264,105 +211,6 @@ void WINAPI DOSVM_QueueEvent( INT irq, INT priority, DOSRELAY relay, LPVOID data
}
}
#define CV do { CP(eax,Eax); CP(ecx,Ecx); CP(edx,Edx); CP(ebx,Ebx); \
CP(esi,Esi); CP(edi,Edi); CP(esp,Esp); CP(ebp,Ebp); \
CP(cs,SegCs); CP(ds,SegDs); CP(es,SegEs); \
CP(ss,SegSs); CP(fs,SegFs); CP(gs,SegGs); \
CP(eip,Eip); CP(eflags,EFlags); } while(0)
static int DOSVM_Process( int fn, int sig, struct vm86plus_struct*VM86 )
{
CONTEXT86 context, *old_context;
int ret=0;
#define CP(x,y) context.y = VM86->regs.x
CV;
#undef CP
if (VM86_TYPE(fn)==VM86_UNKNOWN) {
ret=INSTR_EmulateInstruction(&context);
#define CP(x,y) VM86->regs.x = context.y
CV;
#undef CP
if (ret) return 0;
ret=0;
}
#ifdef TRY_PICRETURN
if (VM86->vm86plus.force_return_for_pic) {
SET_PEND(&context);
}
#else
/* linux doesn't preserve pending flag on return */
if (SHOULD_PEND(pending_event)) {
SET_PEND(&context);
}
#endif
old_context = current_context;
current_context = &context;
switch (VM86_TYPE(fn)) {
case VM86_SIGNAL:
TRACE("DOS module caught signal %d\n",sig);
if ((sig==SIGALRM) || (sig==SIGUSR2)) {
if (sig==SIGALRM) {
sig_sent++;
DOSVM_QueueEvent(0,DOS_PRIORITY_REALTIME,NULL,NULL);
}
if (pending_event) {
TRACE("setting Pending flag, interrupts are currently %s\n",
IF_ENABLED(&context) ? "enabled" : "disabled");
SET_PEND(&context);
DOSVM_SendQueuedEvents(&context);
} else {
TRACE("no events are pending, clearing Pending flag\n");
CLR_PEND(&context);
}
sig_sent--;
}
else if ((sig==SIGHUP) || (sig==SIGILL) || (sig==SIGSEGV)) {
do_exception( sig, &context );
} else {
DOSVM_Dump(fn,sig,VM86);
ret=-1;
}
break;
case VM86_UNKNOWN: /* unhandled GPF */
DOSVM_Dump(fn,sig,VM86);
do_exception( SIGSEGV, &context );
break;
case VM86_INTx:
if (TRACE_ON(relay))
DPRINTF("Call DOS int 0x%02x (EAX=%08lx) ret=%04lx:%04lx\n",VM86_ARG(fn),context.Eax,context.SegCs,context.Eip);
ret=DOSVM_SimulateInt(VM86_ARG(fn),&context,FALSE);
if (TRACE_ON(relay))
DPRINTF("Ret DOS int 0x%02x (EAX=%08lx) ret=%04lx:%04lx\n",VM86_ARG(fn),context.Eax,context.SegCs,context.Eip);
break;
case VM86_STI:
IF_SET(&context);
/* case VM86_PICRETURN: */
TRACE("DOS task enabled interrupts %s events pending, sending events\n", IS_PEND(&context)?"with":"without");
DOSVM_SendQueuedEvents(&context);
break;
case VM86_TRAP:
do_exception( SIGTRAP, &context );
break;
default:
DOSVM_Dump(fn,sig,VM86);
ret=-1;
}
current_context = old_context;
#define CP(x,y) VM86->regs.x = context.y
CV;
#undef CP
#ifdef TRY_PICRETURN
VM86->vm86plus.force_return_for_pic = IS_PEND(&context) ? 1 : 0;
CLR_PEND(&context);
#endif
return ret;
}
static void DOSVM_ProcessConsole(void)
{
INPUT_RECORD msg;
@ -488,80 +336,123 @@ chk_console_input:
} while (TRUE);
}
/***********************************************************************
* Enter (WINEDOS.@)
*/
INT WINAPI DOSVM_Enter( CONTEXT86 *context )
DWORD WINAPI DOSVM_Loop( LPVOID lpExtra )
{
struct vm86plus_struct VM86;
int stat,len,sig;
HANDLE obj = GetStdHandle(STD_INPUT_HANDLE);
MSG msg;
DWORD waitret;
memset(&VM86, 0, sizeof(VM86));
#define CP(x,y) VM86.regs.x = context->y
CV;
#undef CP
if (VM86.regs.eflags & IF_MASK)
VM86.regs.eflags |= VIF_MASK;
/* main exchange loop */
entered++;
do {
TRACE_(module)("thread is: %lx\n",GetCurrentThreadId());
stat = VM86_ENTER;
errno = 0;
/* transmit VM86 structure to dosmod task */
if (write(write_pipe,&stat,sizeof(stat))!=sizeof(stat)) {
ERR_(module)("dosmod sync lost, errno=%d, fd=%d, pid=%d\n",errno,write_pipe,getpid());
return -1;
}
if (write(write_pipe,&VM86,sizeof(VM86))!=sizeof(VM86)) {
ERR_(module)("dosmod sync lost, errno=%d\n",errno);
return -1;
}
/* wait for response, doing other things in the meantime */
DOSVM_Wait(read_pipe, hReadPipe);
/* read response */
while (1) {
if ((len=read(read_pipe,&stat,sizeof(stat)))==sizeof(stat)) break;
if (((errno==EINTR)||(errno==EAGAIN))&&(len<=0)) {
WARN_(module)("rereading dosmod return code due to errno=%d, result=%d\n",errno,len);
continue;
for(;;) {
TRACE_(int)("waiting for action\n");
waitret = MsgWaitForMultipleObjects(1, &obj, FALSE, INFINITE, QS_ALLINPUT);
if (waitret == WAIT_OBJECT_0) {
DOSVM_ProcessConsole();
}
ERR_(module)("dosmod sync lost reading return code, errno=%d, result=%d\n",errno,len);
return -1;
}
TRACE_(module)("dosmod return code=%d\n",stat);
if (stat==DOSMOD_LEFTIDLE) {
continue;
}
while (1) {
if ((len=read(read_pipe,&VM86,sizeof(VM86)))==sizeof(VM86)) break;
if (((errno==EINTR)||(errno==EAGAIN))&&(len<=0)) {
WARN_(module)("rereading dosmod VM86 structure due to errno=%d, result=%d\n",errno,len);
continue;
}
ERR_(module)("dosmod sync lost reading VM86 structure, errno=%d, result=%d\n",errno,len);
return -1;
}
if ((stat&0xff)==DOSMOD_SIGNAL) {
while (1) {
if ((len=read(read_pipe,&sig,sizeof(sig)))==sizeof(sig)) break;
if (((errno==EINTR)||(errno==EAGAIN))&&(len<=0)) {
WARN_(module)("rereading dosmod signal due to errno=%d, result=%d\n",errno,len);
continue;
else if (waitret == WAIT_OBJECT_0 + 1) {
GetMessageA(&msg, 0, 0, 0);
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 %08x\n", spc->proc, spc->arg);
(spc->proc)(spc->arg);
TRACE_(int)("done, signalling event %d\n", msg.wParam);
SetEvent(msg.wParam);
}
break;
}
}
ERR_(module)("dosmod sync lost reading signal, errno=%d, result=%d\n",errno,len);
return -1;
} while (0);
} else sig=0;
/* got response */
} while (DOSVM_Process(stat,sig,&VM86)>=0);
entered--;
}
else break;
}
return 0;
}
#define CP(x,y) context->y = VM86.regs.x
CV;
#undef CP
return 0;
static WINE_EXCEPTION_FILTER(exception_handler)
{
EXCEPTION_RECORD *rec = GetExceptionInformation()->ExceptionRecord;
CONTEXT *context = GetExceptionInformation()->ContextRecord;
int ret, arg = rec->ExceptionInformation[0];
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_SimulateInt(arg, context, FALSE);
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_EXECUTE_HANDLER : EXCEPTION_CONTINUE_EXECUTION;
case EXCEPTION_VM86_STI:
/* case EXCEPTION_VM86_PICRETURN: */
IF_SET(context);
EnterCriticalSection(&qcrit);
sig_sent++;
while (NtCurrentTeb()->alarms) {
DOSVM_QueueEvent(0,DOS_PRIORITY_REALTIME,NULL,NULL);
/* hmm, instead of relying on this signal counter, we should
* probably check how many ticks have *really* passed, probably using
* QueryPerformanceCounter() or something like that */
InterlockedDecrement(&(NtCurrentTeb()->alarms));
}
TRACE_(int)("context=%p, current=%p\n", context, current_context);
TRACE_(int)("cs:ip=%04lx:%04lx, ss:sp=%04lx:%04lx\n", context->SegCs, context->Eip, context->SegSs, context->Esp);
if (!ISV86(context)) {
ERR_(int)("@#&*%%, winedos signal handling is *still* messed up\n");
}
TRACE_(int)("DOS task enabled interrupts %s events pending, sending events (time=%ld)\n", IS_PEND(context)?"with":"without", GetTickCount());
DOSVM_SendQueuedEvents(context);
sig_sent=0;
LeaveCriticalSection(&qcrit);
return EXCEPTION_CONTINUE_EXECUTION;
}
return EXCEPTION_CONTINUE_SEARCH;
}
int WINAPI DOSVM_Enter( CONTEXT86 *context )
{
CONTEXT86 *old_context = current_context;
current_context = context;
__TRY
{
__wine_enter_vm86( context );
TRACE_(module)( "vm86 returned: %s\n", strerror(errno) );
}
__EXCEPT(exception_handler)
{
TRACE_(module)( "leaving vm86 mode\n" );
}
__ENDTRY
current_context = old_context;
return 0;
}
/***********************************************************************
@ -572,6 +463,7 @@ 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");
@ -581,17 +473,16 @@ void WINAPI DOSVM_PIC_ioport_out( WORD port, BYTE val)
(*event->relay)(NULL,event->data);
free(event);
if (pending_event &&
!sig_sent) {
if (pending_event) {
/* another event is pending, which we should probably
* be able to process now, so tell dosmod about it */
TRACE("another event pending, signalling dosmod\n");
kill(dosmod_pid,SIGUSR2);
sig_sent++;
* be able to process now */
TRACE("another event pending, setting flag\n");
current_context->EFlags |= VIP_MASK;
}
} else {
WARN("EOI without active IRQ\n");
}
LeaveCriticalSection(&qcrit);
} else {
FIXME("unrecognized PIC command %02x\n",val);
}
@ -602,25 +493,18 @@ void WINAPI DOSVM_PIC_ioport_out( WORD port, BYTE val)
*/
void WINAPI DOSVM_SetTimer( UINT ticks )
{
int stat=DOSMOD_SET_TIMER;
struct timeval tim;
struct itimerval tim;
if (write_pipe != -1) {
if (dosvm_pid) {
/* the PC clocks ticks at 1193180 Hz */
tim.tv_sec=0;
tim.tv_usec=MulDiv(ticks,1000000,1193180);
tim.it_interval.tv_sec=0;
tim.it_interval.tv_usec=MulDiv(ticks,1000000,1193180);
/* sanity check */
if (!tim.tv_usec) tim.tv_usec=1;
if (write(write_pipe,&stat,sizeof(stat))!=sizeof(stat)) {
ERR_(module)("dosmod sync lost, errno=%d\n",errno);
return;
}
if (write(write_pipe,&tim,sizeof(tim))!=sizeof(tim)) {
ERR_(module)("dosmod sync lost, errno=%d\n",errno);
return;
}
/* there's no return */
if (!tim.it_interval.tv_usec) tim.it_interval.tv_usec=1;
/* first tick value */
tim.it_value = tim.it_interval;
TRACE_(int)("setting timer tick delay to %ld us\n", tim.it_interval.tv_usec);
setitimer(ITIMER_REAL, &tim, NULL);
}
}
@ -629,22 +513,11 @@ void WINAPI DOSVM_SetTimer( UINT ticks )
*/
UINT WINAPI DOSVM_GetTimer( void )
{
int stat=DOSMOD_GET_TIMER;
struct timeval tim;
struct itimerval tim;
if (write_pipe != -1) {
if (write(write_pipe,&stat,sizeof(stat))!=sizeof(stat)) {
ERR_(module)("dosmod sync lost, errno=%d\n",errno);
return 0;
}
/* read response */
while (1) {
if (read(read_pipe,&tim,sizeof(tim))==sizeof(tim)) break;
if ((errno==EINTR)||(errno==EAGAIN)) continue;
ERR_(module)("dosmod sync lost, errno=%d\n",errno);
return 0;
}
return MulDiv(tim.tv_usec,1193180,1000000);
if (dosvm_pid) {
getitimer(ITIMER_REAL, &tim);
return MulDiv(tim.it_value.tv_usec,1193180,1000000);
}
return 0;
}

19
dlls/winedos/dosvm.h Normal file
View File

@ -0,0 +1,19 @@
/*
* DOS virtual machine
*
* Copyright 2000 Ove Kåven
*/
#ifndef __WINE_DOSVM_H
#define __WINE_DOSVM_H
#include <sys/types.h> /* pid_t */
typedef struct {
PAPCFUNC proc;
ULONG_PTR arg;
} DOS_SPC;
extern pid_t dosvm_pid;
#endif /* __WINE_DOSVM_H */

215
dlls/winedos/module.c
View File

@ -20,6 +20,8 @@
#include <sys/time.h>
#include "windef.h"
#include "wine/winbase16.h"
#include "wingdi.h"
#include "winuser.h"
#include "winerror.h"
#include "module.h"
#include "task.h"
@ -27,7 +29,7 @@
#include "miscemu.h"
#include "debugtools.h"
#include "dosexe.h"
#include "../../loader/dos/dosmod.h"
#include "dosvm.h"
#include "options.h"
#include "vga.h"
@ -69,12 +71,11 @@ typedef struct {
/* global variables */
static WORD init_cs,init_ip,init_ss,init_sp;
static char mm_name[128];
pid_t dosvm_pid;
int read_pipe = -1, write_pipe = -1;
HANDLE hReadPipe, hWritePipe;
pid_t dosmod_pid;
static WORD init_cs,init_ip,init_ss,init_sp;
static HANDLE dosvm_thread, loop_thread;
static DWORD dosvm_tid, loop_tid;
static void MZ_Launch(void);
static BOOL MZ_InitTask(void);
@ -170,25 +171,10 @@ static WORD MZ_InitEnvironment( LPCSTR env, LPCSTR name )
static BOOL MZ_InitMemory(void)
{
int mm_fd;
void *img_base;
/* initialize the memory */
TRACE("Initializing DOS memory structures\n");
DOSMEM_Init(TRUE);
/* allocate 1MB+64K shared memory */
tmpnam(mm_name);
/* strcpy(mm_name,"/tmp/mydosimage"); */
mm_fd = open(mm_name,O_RDWR|O_CREAT /* |O_TRUNC */,S_IRUSR|S_IWUSR);
if (mm_fd < 0) ERR("file %s could not be opened\n",mm_name);
/* fill the file with the DOS memory */
if (write( mm_fd, NULL, 0x110000 ) != 0x110000) ERR("cannot write DOS mem\n");
/* map it in */
img_base = mmap(NULL,0x110000,PROT_READ|PROT_WRITE|PROT_EXEC,MAP_SHARED|MAP_FIXED,mm_fd,0);
close( mm_fd );
if (img_base)
{
ERR("could not map shared memory, error=%s\n",strerror(errno));
return FALSE;
}
MZ_InitHandlers();
return TRUE;
}
@ -307,7 +293,6 @@ static BOOL MZ_DoLoadImage( HANDLE hFile, LPCSTR filename, OverlayBlock *oblk )
}
if (alloc && !MZ_InitTask()) {
MZ_KillTask();
SetLastError(ERROR_GEN_FAILURE);
return FALSE;
}
@ -316,9 +301,6 @@ static BOOL MZ_DoLoadImage( HANDLE hFile, LPCSTR filename, OverlayBlock *oblk )
load_error:
DOSVM_psp = oldpsp_seg;
if (alloc) {
if (mm_name[0]!=0) unlink(mm_name);
}
return FALSE;
}
@ -328,7 +310,7 @@ load_error:
*/
void WINAPI MZ_LoadImage( LPCSTR filename, HANDLE hFile )
{
if (MZ_DoLoadImage( hFile, filename, NULL )) MZ_Launch();
if (MZ_DoLoadImage( hFile, filename, NULL )) MZ_Launch();
}
/***********************************************************************
@ -400,8 +382,8 @@ BOOL WINAPI MZ_Exec( CONTEXT86 *context, LPCSTR filename, BYTE func, LPVOID para
*/
void WINAPI MZ_AllocDPMITask( void )
{
MZ_InitMemory();
MZ_InitTask();
MZ_InitMemory();
MZ_InitTask();
}
/***********************************************************************
@ -409,122 +391,26 @@ void WINAPI MZ_AllocDPMITask( void )
*/
void WINAPI MZ_RunInThread( PAPCFUNC proc, ULONG_PTR arg )
{
proc(arg);
if (loop_thread) {
DOS_SPC spc;
HANDLE event;
spc.proc = proc;
spc.arg = arg;
event = CreateEventA(NULL, TRUE, FALSE, NULL);
PostThreadMessageA(loop_tid, WM_USER, event, (LPARAM)&spc);
WaitForSingleObject(event, INFINITE);
CloseHandle(event);
} else
proc(arg);
}
static void MZ_InitTimer( int ver )
{
if (ver<1) {
/* can't make timer ticks */
} else {
int func;
struct timeval tim;
/* start dosmod timer at 55ms (18.2Hz) */
func=DOSMOD_SET_TIMER;
tim.tv_sec=0; tim.tv_usec=54925;
write(write_pipe,&func,sizeof(func));
write(write_pipe,&tim,sizeof(tim));
}
}
static BOOL MZ_InitTask(void)
{
int write_fd[2],x_fd;
pid_t child;
char path[256],*fpath;
/* create pipes */
if (!CreatePipe(&hReadPipe,&hWritePipe,NULL,0)) return FALSE;
if (pipe(write_fd)<0) {
CloseHandle(hReadPipe);
CloseHandle(hWritePipe);
return FALSE;
}
read_pipe = FILE_GetUnixHandle( hReadPipe, GENERIC_READ );
x_fd = FILE_GetUnixHandle( hWritePipe, GENERIC_WRITE );
TRACE("win32 pipe: read=%d, write=%d, unix pipe: read=%d, write=%d\n",
hReadPipe,hWritePipe,read_pipe,x_fd);
TRACE("outbound unix pipe: read=%d, write=%d, pid=%d\n",write_fd[0],write_fd[1],getpid());
write_pipe=write_fd[1];
TRACE("Loading DOS VM support module\n");
if ((child=fork())<0) {
close(write_fd[0]);
close(read_pipe);
close(write_pipe);
close(x_fd);
CloseHandle(hReadPipe);
CloseHandle(hWritePipe);
return FALSE;
}
if (child!=0) {
/* parent process */
int ret;
close(write_fd[0]);
close(x_fd);
dosmod_pid = child;
/* wait for child process to signal readiness */
while (1) {
if (read(read_pipe,&ret,sizeof(ret))==sizeof(ret)) break;
if ((errno==EINTR)||(errno==EAGAIN)) continue;
/* failure */
ERR("dosmod has failed to initialize\n");
if (mm_name[0]!=0) unlink(mm_name);
return FALSE;
}
/* the child has now mmaped the temp file, it's now safe to unlink.
* do it here to avoid leaving a mess in /tmp if/when Wine crashes... */
if (mm_name[0]!=0) unlink(mm_name);
/* start simulated system timer */
MZ_InitTimer(ret);
if (ret<2) {
ERR("dosmod version too old! Please install newer dosmod properly\n");
ERR("If you don't, the new dosmod event handling system will not work\n");
}
/* all systems are now go */
} else {
/* child process */
close(read_pipe);
close(write_pipe);
/* put our pipes somewhere dosmod can find them */
dup2(write_fd[0],0); /* stdin */
dup2(x_fd,1); /* stdout */
/* now load dosmod */
/* check argv[0]-derived paths first, since the newest dosmod is most likely there
* (at least it was once for Andreas Mohr, so I decided to make it easier for him) */
fpath=strrchr(strcpy(path,full_argv0),'/');
if (fpath) {
strcpy(fpath,"/dosmod");
execl(path,mm_name,NULL);
strcpy(fpath,"/loader/dos/dosmod");
execl(path,mm_name,NULL);
}
/* okay, it wasn't there, try in the path */
execlp("dosmod",mm_name,NULL);
/* last desperate attempts: current directory */
execl("dosmod",mm_name,NULL);
/* and, just for completeness... */
execl("loader/dos/dosmod",mm_name,NULL);
/* if failure, exit */
ERR("Failed to spawn dosmod, error=%s\n",strerror(errno));
exit(1);
}
return TRUE;
}
static void MZ_Launch(void)
static DWORD WINAPI MZ_DOSVM( LPVOID lpExtra )
{
CONTEXT context;
TDB *pTask = GlobalLock16( GetCurrentTask() );
BYTE *psp_start = PTR_REAL_TO_LIN( DOSVM_psp, 0 );
DWORD ret;
MZ_FillPSP(psp_start, GetCommandLineA());
pTask->flags |= TDBF_WINOLDAP;
dosvm_pid = getpid();
memset( &context, 0, sizeof(context) );
context.SegCs = init_cs;
@ -534,15 +420,54 @@ static void MZ_Launch(void)
context.SegDs = DOSVM_psp;
context.SegEs = DOSVM_psp;
context.EFlags = 0x00080000; /* virtual interrupt flag */
DOSVM_SetTimer(0x10000);
ret = DOSVM_Enter( &context );
dosvm_pid = 0;
return ret;
}
static BOOL MZ_InitTask(void)
{
if (!DuplicateHandle(GetCurrentProcess(), GetCurrentThread(),
GetCurrentProcess(), &loop_thread,
0, FALSE, DUPLICATE_SAME_ACCESS))
return FALSE;
dosvm_thread = CreateThread(NULL, 0, MZ_DOSVM, NULL, CREATE_SUSPENDED, &dosvm_tid);
if (!dosvm_thread) {
CloseHandle(loop_thread);
loop_thread = 0;
return FALSE;
}
loop_tid = GetCurrentThreadId();
return TRUE;
}
static void MZ_Launch(void)
{
TDB *pTask = TASK_GetCurrent();
BYTE *psp_start = PTR_REAL_TO_LIN( DOSVM_psp, 0 );
MZ_FillPSP(psp_start, GetCommandLineA());
pTask->flags |= TDBF_WINOLDAP;
_LeaveWin16Lock();
DOSVM_Enter( &context );
ResumeThread(dosvm_thread);
DOSVM_Loop(NULL);
ExitThread(0);
}
static void MZ_KillTask(void)
{
TRACE("killing DOS task\n");
VGA_Clean();
kill(dosmod_pid,SIGTERM);
PostThreadMessageA(loop_tid, WM_QUIT, 0, 0);
WaitForSingleObject(loop_thread, INFINITE); /* ? */
CloseHandle(dosvm_thread);
dosvm_thread = 0; dosvm_tid = 0;
CloseHandle(loop_thread);
loop_thread = 0; loop_tid = 0;
}
/***********************************************************************
@ -590,7 +515,7 @@ void WINAPI MZ_Exit( CONTEXT86 *context, BOOL cs_psp, WORD retval )
*/
BOOL WINAPI MZ_Current( void )
{
return (write_pipe != -1); /* FIXME: do a better check */
return (dosvm_pid != 0); /* FIXME: do a better check */
}
#else /* !MZ_SUPPORTED */