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Added infrastructure and definitions for general-purpose event and IRQ

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handling for the Wine dos box. Removed the obsolete MZ_Tick. Added
event message loop, message handling, CLI/STI handling, and minimal
PIC support.
This commit is contained in:
Ove Kaaven 1999-03-25 10:53:08 +00:00 committed by Alexandre Julliard
parent 9ea09ca866
commit 5394258a90
4 changed files with 405 additions and 99 deletions
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33
include/dosexe.h
View File

@ -9,8 +9,17 @@
#include <sys/types.h> /* pid_t */
#include "winbase.h" /* for LPSTARTUPINFO32A */
#include "winnt.h" /* for PCONTEXT */
#include "sig_context.h"
typedef struct _DOSSYSTEM {
int id;
void *data;
struct _DOSSYSTEM *next;
} DOSSYSTEM;
struct _DOSEVENT;
typedef struct _DOSTASK {
LPVOID img;
unsigned img_ofs;
@ -18,14 +27,30 @@ typedef struct _DOSTASK {
WORD init_cs,init_ip,init_ss,init_sp;
WORD xms_seg;
WORD dpmi_seg,dpmi_sel,dpmi_flag;
WORD system_timer;
HMODULE16 hModule;
char mm_name[128];
int mm_fd;
HANDLE hReadPipe,hXPipe;
int read_pipe,write_pipe;
pid_t task;
int sig_sent;
struct _DOSEVENT *pending,*current;
DOSSYSTEM *sys;
} DOSTASK, *LPDOSTASK;
typedef struct _DOSEVENT {
int irq,priority;
void (*relay)(LPDOSTASK,PCONTEXT,void*);
void *data;
struct _DOSEVENT *next;
} DOSEVENT, *LPDOSEVENT;
#define DOS_PRIORITY_REALTIME 0 /* IRQ0 */
#define DOS_PRIORITY_KEYBOARD 1 /* IRQ1 */
#define DOS_PRIORITY_VGA 2 /* IRQ9 */
#define DOS_PRIORITY_MOUSE 5 /* IRQ12 */
#define DOS_PRIORITY_SERIAL 10 /* IRQ4 */
#if defined(linux) && defined(__i386__)
#define MZ_SUPPORTED
@ -33,19 +58,21 @@ typedef struct _DOSTASK {
extern BOOL MZ_InitTask( LPDOSTASK lpDosTask );
extern void MZ_KillModule( LPDOSTASK lpDosTask );
extern LPDOSTASK MZ_AllocDPMITask( HMODULE16 hModule );
extern void DOSVM_QueueEvent( int irq, int priority, void (*relay)(LPDOSTASK,PCONTEXT,void*), void *data );
#endif /* linux-i386 */
#define V86_FLAG 0x00020000
extern void MZ_Tick( WORD handle );
extern BOOL MZ_CreateProcess( HFILE hFile, OFSTRUCT *ofs, LPCSTR cmdline, LPCSTR env,
LPSECURITY_ATTRIBUTES psa, LPSECURITY_ATTRIBUTES tsa,
BOOL inherit, LPSTARTUPINFOA startup,
LPPROCESS_INFORMATION info );
extern int DOSVM_Enter( PCONTEXT context );
extern void DOSVM_PIC_ioport_out( WORD port, BYTE val );
extern void DOSVM_SetTimer( unsigned ticks );
extern unsigned DOSVM_GetTimer( void );
extern void DOSVM_SetSystemData( int id, void *data );
extern void* DOSVM_GetSystemData( int id );
#endif /* __WINE_DOSEXE_H */

1
include/winbase.h
View File

@ -1354,6 +1354,7 @@ HANDLE WINAPI CreateFileMappingW(HANDLE,LPSECURITY_ATTRIBUTES,DWORD,
HANDLE WINAPI CreateMutexA(LPSECURITY_ATTRIBUTES,BOOL,LPCSTR);
HANDLE WINAPI CreateMutexW(LPSECURITY_ATTRIBUTES,BOOL,LPCWSTR);
#define CreateMutex WINELIB_NAME_AW(CreateMutex)
BOOL WINAPI CreatePipe(PHANDLE,PHANDLE,LPSECURITY_ATTRIBUTES,DWORD);
BOOL WINAPI CreateProcessA(LPCSTR,LPSTR,LPSECURITY_ATTRIBUTES,
LPSECURITY_ATTRIBUTES,BOOL,DWORD,LPVOID,LPCSTR,
LPSTARTUPINFOA,LPPROCESS_INFORMATION);

340
loader/dos/dosvm.c
View File

@ -18,6 +18,7 @@
#include <sys/stat.h>
#include "wine/winbase16.h"
#include "winuser.h"
#include "winnt.h"
#include "sig_context.h"
#include "msdos.h"
@ -36,6 +37,14 @@
#include <sys/mman.h>
#include <sys/vm86.h>
#define IF_CLR(ctx) EFL_reg(ctx) &= ~VIF_MASK
#define IF_ENABLED(ctx) (EFL_reg(ctx) & VIF_MASK)
#define SET_PEND(ctx) EFL_reg(ctx) |= VIP_MASK
#define CLR_PEND(ctx) EFL_reg(ctx) &= ~VIP_MASK
#define IS_PEND(ctx) (EFL_reg(ctx) & VIP_MASK)
#undef TRY_PICRETURN
static void DOSVM_Dump( LPDOSTASK lpDosTask, int fn, int sig,
struct vm86plus_struct*VM86 )
{
@ -90,15 +99,104 @@ static int DOSVM_Int( int vect, PCONTEXT context, LPDOSTASK lpDosTask )
static void DOSVM_SimulateInt( int vect, PCONTEXT context, LPDOSTASK lpDosTask )
{
FARPROC16 handler=INT_GetRMHandler(vect);
WORD*stack=(WORD*)(V86BASE(context)+(((DWORD)SS_reg(context))<<4)+SP_reg(context));
FARPROC16 handler=INT_GetRMHandler(vect);
*(--stack)=FL_reg(context);
*(--stack)=CS_reg(context);
*(--stack)=IP_reg(context);
SP_reg(context)-=6;
CS_reg(context)=SELECTOROF(handler);
IP_reg(context)=OFFSETOF(handler);
if (SELECTOROF(handler)==0xf000) {
/* if internal interrupt, call it directly */
INT_RealModeInterrupt(vect,context);
} else {
WORD*stack=(WORD*)(V86BASE(context)+(((DWORD)SS_reg(context))<<4)+SP_reg(context));
WORD flag=FL_reg(context);
if (IF_ENABLED(context)) flag|=IF_MASK;
else flag&=~IF_MASK;
*(--stack)=flag;
*(--stack)=CS_reg(context);
*(--stack)=IP_reg(context);
SP_reg(context)-=6;
CS_reg(context)=SELECTOROF(handler);
IP_reg(context)=OFFSETOF(handler);
IF_CLR(context);
}
}
#define SHOULD_PEND(x) \
(x && ((!lpDosTask->current) || (x->priority < lpDosTask->current->priority)))
static void DOSVM_SendQueuedEvent(PCONTEXT context, LPDOSTASK lpDosTask)
{
LPDOSEVENT event = lpDosTask->pending;
if (SHOULD_PEND(event)) {
/* remove from "pending" list */
lpDosTask->pending = event->next;
/* process event */
if (event->irq>=0) {
/* it's an IRQ, move it to "current" list */
event->next = lpDosTask->current;
lpDosTask->current = event;
TRACE(int,"dispatching IRQ %d\n",event->irq);
/* note that if DOSVM_SimulateInt calls an internal interrupt directly,
* lpDosTask->current might be cleared (and event freed) in this very call! */
DOSVM_SimulateInt((event->irq<8)?(event->irq+8):(event->irq-8+0x70),context,lpDosTask);
} else {
/* callback event */
TRACE(int,"dispatching callback event\n");
(*event->relay)(lpDosTask,context,event->data);
free(event);
}
}
if (!SHOULD_PEND(lpDosTask->pending)) {
TRACE(int,"clearing Pending flag\n");
CLR_PEND(context);
}
}
static void DOSVM_SendQueuedEvents(PCONTEXT context, LPDOSTASK lpDosTask)
{
/* we will send all queued events as long as interrupts are enabled,
* but IRQ events will disable interrupts again */
while (IS_PEND(context) && IF_ENABLED(context))
DOSVM_SendQueuedEvent(context,lpDosTask);
}
void DOSVM_QueueEvent( int irq, int priority, void (*relay)(LPDOSTASK,PCONTEXT,void*), void *data)
{
TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
NE_MODULE *pModule = NE_GetPtr( pTask->hModule );
LPDOSEVENT event, cur, prev;
GlobalUnlock16( GetCurrentTask() );
if (pModule && pModule->lpDosTask) {
event = malloc(sizeof(DOSEVENT));
if (!event) {
ERR(int,"out of memory allocating event entry\n");
return;
}
event->irq = irq; event->priority = priority;
event->relay = relay; event->data = data;
/* insert event into linked list, in order *after*
* all earlier events of higher or equal priority */
cur = pModule->lpDosTask->pending; prev = NULL;
while (cur && cur->priority<=priority) {
prev = cur;
cur = cur->next;
}
event->next = cur;
if (prev) prev->next = event;
else pModule->lpDosTask->pending = event;
/* get dosmod's attention to the new event, except for irq==0 where we already have it */
if (irq && !pModule->lpDosTask->sig_sent) {
TRACE(int,"new event queued, signalling dosmod\n");
kill(pModule->lpDosTask->task,SIGUSR2);
pModule->lpDosTask->sig_sent++;
} else {
TRACE(int,"new event queued\n");
}
}
}
#define CV CP(eax,EAX); CP(ecx,ECX); CP(edx,EDX); CP(ebx,EBX); \
@ -130,12 +228,34 @@ static int DOSVM_Process( LPDOSTASK lpDosTask, int fn, int sig,
CV;
#undef CP
(void*)V86BASE(&context)=lpDosTask->img;
#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(lpDosTask->pending)) {
SET_PEND(&context);
}
#endif
switch (VM86_TYPE(fn)) {
case VM86_SIGNAL:
TRACE(int,"DOS module caught signal %d\n",sig);
if (sig==SIGALRM) {
DOSVM_SimulateInt(8,&context,lpDosTask);
if ((sig==SIGALRM) || (sig==SIGUSR2)) {
if (sig==SIGALRM) {
DOSVM_QueueEvent(0,DOS_PRIORITY_REALTIME,NULL,NULL);
}
if (lpDosTask->pending) {
TRACE(int,"setting Pending flag, interrupts are currently %s\n",
IF_ENABLED(&context) ? "enabled" : "disabled");
SET_PEND(&context);
DOSVM_SendQueuedEvents(&context,lpDosTask);
} else {
TRACE(int,"no events are pending, clearing Pending flag\n");
CLR_PEND(&context);
}
if (sig==SIGUSR2) lpDosTask->sig_sent--;
} else
if (sig==SIGHUP) {
if (ctx_debug_call) ctx_debug_call(SIGTRAP,&context);
@ -159,9 +279,10 @@ static int DOSVM_Process( LPDOSTASK lpDosTask, int fn, int sig,
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:
break;
case VM86_PICRETURN:
printf("Trapped due to pending PIC request\n"); break;
TRACE(int,"DOS task enabled interrupts with events pending, sending events\n");
DOSVM_SendQueuedEvents(&context,lpDosTask);
break;
case VM86_TRAP:
if (ctx_debug_call) ctx_debug_call(SIGTRAP,&context);
break;
@ -173,9 +294,42 @@ static int DOSVM_Process( LPDOSTASK lpDosTask, int fn, int sig,
#define CP(x,y) VM86->regs.x = y##_reg(&context)
CV;
#undef CP
#ifdef TRY_PICRETURN
VM86->vm86plus.force_return_for_pic = IS_PEND(&context) ? 1 : 0;
CLR_PEND(&context);
#endif
return ret;
}
void DOSVM_ProcessMessage(LPDOSTASK lpDosTask,MSG *msg)
{
BYTE scan = 0;
fprintf(stderr,"got message %04x, wparam=%08x, lparam=%08lx\n",msg->message,msg->wParam,msg->lParam);
if ((msg->message>=WM_MOUSEFIRST)&&
(msg->message<=WM_MOUSELAST)) {
INT_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 */
INT_Int09SendScan(0xE0);
}
INT_Int09SendScan(scan);
break;
}
}
}
int DOSVM_Enter( PCONTEXT context )
{
TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
@ -183,7 +337,10 @@ int DOSVM_Enter( PCONTEXT context )
LPDOSTASK lpDosTask;
struct vm86plus_struct VM86;
int stat,len,sig;
fd_set readfds,exceptfds;
DWORD waitret;
MSG msg;
fd_set readfds;
struct timeval timeout={0,0};
GlobalUnlock16( GetCurrentTask() );
if (!pModule) {
@ -212,6 +369,7 @@ int DOSVM_Enter( PCONTEXT context )
VM86.regs.esp=lpDosTask->init_sp;
VM86.regs.ds=lpDosTask->psp_seg;
VM86.regs.es=lpDosTask->psp_seg;
VM86.regs.eflags=VIF_MASK;
/* hmm, what else do we need? */
}
@ -221,57 +379,62 @@ int DOSVM_Enter( PCONTEXT context )
errno = 0;
/* transmit VM86 structure to dosmod task */
if (write(lpDosTask->write_pipe,&stat,sizeof(stat))!=sizeof(stat)) {
ERR(module,"dosmod sync lost, errno=%d\n",errno);
ERR(module,"dosmod sync lost, errno=%d, fd=%d, pid=%d\n",errno,lpDosTask->write_pipe,getpid());
return -1;
}
if (write(lpDosTask->write_pipe,&VM86,sizeof(VM86))!=sizeof(VM86)) {
ERR(module,"dosmod sync lost, errno=%d\n",errno);
return -1;
}
/* wait for response, with async events enabled */
FD_ZERO(&readfds);
FD_ZERO(&exceptfds);
SIGNAL_MaskAsyncEvents(FALSE);
do {
FD_SET(lpDosTask->read_pipe,&readfds);
FD_SET(lpDosTask->read_pipe,&exceptfds);
select(lpDosTask->read_pipe+1,&readfds,NULL,&exceptfds,NULL);
} while (!(FD_ISSET(lpDosTask->read_pipe,&readfds)||
FD_ISSET(lpDosTask->read_pipe,&exceptfds)));
SIGNAL_MaskAsyncEvents(TRUE);
/* read response (with async events disabled to avoid some strange problems) */
do {
if ((len=read(lpDosTask->read_pipe,&stat,sizeof(stat)))!=sizeof(stat)) {
/* check for messages (waste time before the response check below) */
while (PeekMessageA(&msg,0,0,0,PM_REMOVE|PM_NOYIELD)) {
/* got a message */
DOSVM_ProcessMessage(lpDosTask,&msg);
/* we don't need a TranslateMessage here */
DispatchMessageA(&msg);
}
/* quick check for response from dosmod
* (faster than doing the full blocking wait, if data already available) */
FD_ZERO(&readfds); FD_SET(lpDosTask->read_pipe,&readfds);
if (select(lpDosTask->read_pipe+1,&readfds,NULL,NULL,&timeout)>0)
break;
/* nothing yet, block while waiting for something to do */
waitret=MsgWaitForMultipleObjects(1,&(lpDosTask->hReadPipe),FALSE,INFINITE,QS_ALLINPUT);
if (waitret==(DWORD)-1) {
ERR(module,"dosvm wait error=%ld\n",GetLastError());
}
} while (waitret!=WAIT_OBJECT_0);
/* read response */
while (1) {
if ((len=read(lpDosTask->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;
}
ERR(module,"dosmod sync lost reading return code, errno=%d, result=%d\n",errno,len);
return -1;
}
} while (0);
}
TRACE(module,"dosmod return code=%d\n",stat);
do {
if ((len=read(lpDosTask->read_pipe,&VM86,sizeof(VM86)))!=sizeof(VM86)) {
while (1) {
if ((len=read(lpDosTask->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;
}
} while (0);
}
if ((stat&0xff)==DOSMOD_SIGNAL) {
do {
if ((len=read(lpDosTask->read_pipe,&sig,sizeof(sig)))!=sizeof(sig)) {
if (((errno==EINTR)||(errno==EAGAIN))&&(len<=0)) {
WARN(module,"rereading dosmod signal due to errno=%d, result=%d\n",errno,len);
continue;
}
ERR(module,"dosmod sync lost reading signal, errno=%d, result=%d\n",errno,len);
return -1;
}
} while (0);
while (1) {
if ((len=read(lpDosTask->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;
}
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(lpDosTask,stat,sig,&VM86)>=0);
@ -284,6 +447,41 @@ int DOSVM_Enter( PCONTEXT context )
return 0;
}
void DOSVM_PIC_ioport_out( WORD port, BYTE val)
{
TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
NE_MODULE *pModule = NE_GetPtr( pTask->hModule );
LPDOSEVENT event;
GlobalUnlock16( GetCurrentTask() );
if (pModule && pModule->lpDosTask) {
if ((port==0x20) && (val==0x20)) {
if (pModule->lpDosTask->current) {
/* EOI (End Of Interrupt) */
TRACE(int,"received EOI for current IRQ, clearing\n");
event = pModule->lpDosTask->current;
pModule->lpDosTask->current = event->next;
if (event->relay)
(*event->relay)(pModule->lpDosTask,NULL,event->data);
free(event);
if (pModule->lpDosTask->pending &&
!pModule->lpDosTask->sig_sent) {
/* another event is pending, which we should probably
* be able to process now, so tell dosmod about it */
TRACE(int,"another event pending, signalling dosmod\n");
kill(pModule->lpDosTask->task,SIGUSR2);
pModule->lpDosTask->sig_sent++;
}
} else {
WARN(int,"EOI without active IRQ\n");
}
} else {
FIXME(int,"unrecognized PIC command %02x\n",val);
}
}
}
void DOSVM_SetTimer( unsigned ticks )
{
TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
@ -334,19 +532,49 @@ unsigned DOSVM_GetTimer( void )
return 0;
}
void MZ_Tick( WORD handle )
void DOSVM_SetSystemData( int id, void *data )
{
/* find the DOS task that has the right system_timer handle... */
/* should usually be the current, so let's just be lazy... */
TDB *pTask = (TDB*)GlobalLock16( GetCurrentTask() );
NE_MODULE *pModule = pTask ? NE_GetPtr( pTask->hModule ) : NULL;
LPDOSTASK lpDosTask = pModule ? pModule->lpDosTask : NULL;
TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
NE_MODULE *pModule = NE_GetPtr( pTask->hModule );
DOSSYSTEM *sys, *prev;
GlobalUnlock16( GetCurrentTask() );
if (lpDosTask&&(lpDosTask->system_timer==handle)) {
/* BIOS timer tick */
(*((DWORD*)(((BYTE*)(lpDosTask->img))+0x46c)))++;
}
GlobalUnlock16( GetCurrentTask() );
if (pModule && pModule->lpDosTask) {
sys = pModule->lpDosTask->sys;
prev = NULL;
while (sys && (sys->id != id)) {
prev = sys;
sys = sys->next;
}
if (sys) {
free(sys->data);
sys->data = data;
} else {
sys = malloc(sizeof(DOSSYSTEM));
sys->id = id;
sys->data = data;
sys->next = NULL;
if (prev) prev->next = sys;
else pModule->lpDosTask->sys = sys;
}
} else free(data);
}
void* DOSVM_GetSystemData( int id )
{
TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
NE_MODULE *pModule = NE_GetPtr( pTask->hModule );
DOSSYSTEM *sys;
GlobalUnlock16( GetCurrentTask() );
if (pModule && pModule->lpDosTask) {
sys = pModule->lpDosTask->sys;
while (sys && (sys->id != id))
sys = sys->next;
if (sys)
return sys->data;
}
return NULL;
}
#else /* !MZ_SUPPORTED */
@ -357,8 +585,10 @@ int DOSVM_Enter( PCONTEXT context )
return -1;
}
void MZ_Tick( WORD handle ) {}
void DOSVM_PIC_ioport_out( WORD port, BYTE val) {}
void DOSVM_SetTimer( unsigned ticks ) {}
unsigned DOSVM_GetTimer( void ) { return 0; }
void DOSVM_SetSystemData( int id, void *data ) { free(data); }
void* DOSVM_GetSystemData( int id ) { return NULL; }
#endif

130
loader/dos/module.c
View File

@ -32,6 +32,7 @@
#include "dosexe.h"
#include "dosmod.h"
#include "options.h"
#include "server.h"
#ifdef MZ_SUPPORTED
@ -322,11 +323,7 @@ LPDOSTASK MZ_AllocDPMITask( HMODULE16 hModule )
static void MZ_InitTimer( LPDOSTASK lpDosTask, int ver )
{
if (ver<1) {
#if 0
/* start simulated system 55Hz timer */
lpDosTask->system_timer = CreateSystemTimer( 55, MZ_Tick );
TRACE(module,"created 55Hz timer tick, handle=%d\n",lpDosTask->system_timer);
#endif
/* can't make timer ticks */
} else {
int func;
struct timeval tim;
@ -341,18 +338,36 @@ static void MZ_InitTimer( LPDOSTASK lpDosTask, int ver )
BOOL MZ_InitTask( LPDOSTASK lpDosTask )
{
int read_fd[2],write_fd[2];
pid_t child;
char *fname,*farg,arg[16],fproc[64],path[256],*fpath;
int write_fd[2],x_fd;
pid_t child;
char *fname,*farg,arg[16],fproc[64],path[256],*fpath;
SECURITY_ATTRIBUTES attr={sizeof(attr),NULL,TRUE};
struct get_read_fd_request r_req;
struct get_write_fd_request w_req;
if (!lpDosTask) return FALSE;
/* create pipes */
/* this happens in the wrong process context, so we have to let the new process
inherit it... (FIXME: call MZ_InitTask in the right process context) */
if (!CreatePipe(&(lpDosTask->hReadPipe),&(lpDosTask->hXPipe),&attr,0)) return FALSE;
if (pipe(write_fd)<0) {
CloseHandle(lpDosTask->hReadPipe);
CloseHandle(lpDosTask->hXPipe);
return FALSE;
}
r_req.handle = lpDosTask->hReadPipe;
CLIENT_SendRequest( REQ_GET_READ_FD, -1, 1, &r_req, sizeof(r_req) );
CLIENT_WaitReply( NULL, &(lpDosTask->read_pipe), 0 );
w_req.handle = lpDosTask->hXPipe;
CLIENT_SendRequest( REQ_GET_WRITE_FD, -1, 1, &w_req, sizeof(w_req) );
CLIENT_WaitReply( NULL, &x_fd, 0 );
TRACE(module,"win32 pipe: read=%d, write=%d, unix pipe: read=%d, write=%d\n",
lpDosTask->hReadPipe,lpDosTask->hXPipe,lpDosTask->read_pipe,x_fd);
TRACE(module,"outbound unix pipe: read=%d, write=%d, pid=%d\n",write_fd[0],write_fd[1],getpid());
lpDosTask->write_pipe=write_fd[1];
if (!lpDosTask) return FALSE;
/* create read pipe */
if (pipe(read_fd)<0) return FALSE;
if (pipe(write_fd)<0) {
close(read_fd[0]); close(read_fd[1]); return FALSE;
}
lpDosTask->read_pipe=read_fd[0];
lpDosTask->write_pipe=write_fd[1];
/* if we have a mapping file, use it */
fname=lpDosTask->mm_name; farg=NULL;
if (!fname[0]) {
@ -362,16 +377,22 @@ BOOL MZ_InitTask( LPDOSTASK lpDosTask )
fname=fproc; farg=arg;
}
TRACE(module,"Loading DOS VM support module (hmodule=%04x)\n",lpDosTask->hModule);
if ((child=fork())<0) {
close(write_fd[0]); close(write_fd[1]);
close(read_fd[0]); close(read_fd[1]); return FALSE;
}
TRACE(module,"Loading DOS VM support module (hmodule=%04x)\n",lpDosTask->hModule);
if ((child=fork())<0) {
close(write_fd[0]);
close(lpDosTask->read_pipe);
close(lpDosTask->write_pipe);
close(x_fd);
CloseHandle(lpDosTask->hReadPipe);
CloseHandle(lpDosTask->hXPipe);
return FALSE;
}
if (child!=0) {
/* parent process */
int ret;
close(read_fd[1]); close(write_fd[0]);
close(write_fd[0]);
close(x_fd);
lpDosTask->task=child;
/* wait for child process to signal readiness */
do {
@ -388,26 +409,36 @@ BOOL MZ_InitTask( LPDOSTASK lpDosTask )
if (lpDosTask->mm_name[0]!=0) unlink(lpDosTask->mm_name);
/* start simulated system timer */
MZ_InitTimer(lpDosTask,ret);
if (ret<2) {
ERR(module,"dosmod version too old! Please install newer dosmod properly\n");
ERR(module,"If you don't, the new dosmod event handling system will not work\n");
}
/* all systems are now go */
} else {
/* child process */
close(read_fd[0]); close(write_fd[1]);
close(lpDosTask->read_pipe);
close(lpDosTask->write_pipe);
/* put our pipes somewhere dosmod can find them */
dup2(write_fd[0],0); /* stdin */
dup2(read_fd[1],1); /* stdout */
dup2(write_fd[0],0); /* stdin */
dup2(x_fd,1); /* stdout */
/* enable signals */
SIGNAL_MaskAsyncEvents(FALSE);
/* now load dosmod */
execlp("dosmod",fname,farg,NULL);
execl("dosmod",fname,farg,NULL);
/* hmm, they didn't install properly */
execl("loader/dos/dosmod",fname,farg,NULL);
/* last resort, try to find it through argv[0] */
/* 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,Options.argv0),'/');
if (fpath) {
strcpy(fpath,"/dosmod");
execl(path,fname,farg,NULL);
strcpy(fpath,"/loader/dos/dosmod");
execl(path,fname,farg,NULL);
}
/* okay, it wasn't there, try in the path */
execlp("dosmod",fname,farg,NULL);
/* last desperate attempts: current directory */
execl("dosmod",fname,farg,NULL);
/* and, just for completeness... */
execl("loader/dos/dosmod",fname,farg,NULL);
/* if failure, exit */
ERR(module,"Failed to spawn dosmod, error=%s\n",strerror(errno));
exit(1);
@ -464,6 +495,7 @@ BOOL MZ_CreateProcess( HFILE hFile, OFSTRUCT *ofs, LPCSTR cmdline, LPCSTR env,
SetLastError(ERROR_GEN_FAILURE);
return FALSE;
}
inherit = TRUE; /* bad hack for inheriting the CreatePipe... */
if (!PROCESS_Create( pModule, cmdline, env, 0, 0,
psa, tsa, inherit, startup, info ))
return FALSE;
@ -473,17 +505,33 @@ BOOL MZ_CreateProcess( HFILE hFile, OFSTRUCT *ofs, LPCSTR cmdline, LPCSTR env,
void MZ_KillModule( LPDOSTASK lpDosTask )
{
TRACE(module,"killing DOS task\n");
#if 0
SYSTEM_KillSystemTimer(lpDosTask->system_timer);
#endif
if (lpDosTask->mm_name[0]!=0) {
munmap(lpDosTask->img,0x110000-START_OFFSET);
close(lpDosTask->mm_fd);
} else VirtualFree(lpDosTask->img,0x110000,MEM_RELEASE);
close(lpDosTask->read_pipe);
close(lpDosTask->write_pipe);
kill(lpDosTask->task,SIGTERM);
DOSEVENT *event,*p_event;
DOSSYSTEM *sys,*p_sys;
TRACE(module,"killing DOS task\n");
if (lpDosTask->mm_name[0]!=0) {
munmap(lpDosTask->img,0x110000-START_OFFSET);
close(lpDosTask->mm_fd);
} else VirtualFree(lpDosTask->img,0x110000,MEM_RELEASE);
close(lpDosTask->read_pipe);
close(lpDosTask->write_pipe);
CloseHandle(lpDosTask->hReadPipe);
CloseHandle(lpDosTask->hXPipe);
kill(lpDosTask->task,SIGTERM);
/* free memory allocated for events and systems */
#define DFREE(var,pvar,svar) \
var = lpDosTask->svar; \
while (var) { \
if (var->data) free(var->data); \
pvar = var->next; free(var); var = pvar; \
}
DFREE(event,p_event,pending)
DFREE(event,p_event,current)
DFREE(sys,p_sys,sys)
#undef DFREE
#if 0
/* FIXME: this seems to crash */
if (lpDosTask->dpmi_sel)