20060303a

1 files changed, 875 insertions, 0 deletions

diff --git a/emu/Nt/os.c b/emu/Nt/os.c
new file mode 100644
index 00000000..023d47c3
--- /dev/null
+++ b/emu/Nt/os.c
@@ -0,0 +1,875 @@
+#define Unknown win_Unknown
+#define UNICODE
+#include	<windows.h>
+#include <winbase.h>
+#include	<winsock.h>
+#undef Unknown
+#include	"dat.h"
+#include	"fns.h"
+#include	"error.h"
+
+int	SYS_SLEEP = 2;
+int SOCK_SELECT = 3;
+#define	MAXSLEEPERS	1500
+
+extern			int	cflag;
+
+DWORD			PlatformId;
+DWORD			consolestate;
+static			char*	path;
+static			HANDLE	kbdh = INVALID_HANDLE_VALUE;
+static			HANDLE	conh = INVALID_HANDLE_VALUE;
+static			int sleepers = 0;
+
+	wchar_t	*widen(char *s);
+	char		*narrowen(wchar_t *ws);
+	int		widebytes(wchar_t *ws);
+	int		runeslen(Rune*);
+	Rune*	runesdup(Rune*);
+	Rune*	utftorunes(Rune*, char*, int);
+	char*	runestoutf(char*, Rune*, int);
+	int		runescmp(Rune*, Rune*);
+
+_declspec(thread)       Proc    *up;
+
+HANDLE	ntfd2h(int);
+int	nth2fd(HANDLE);
+void	termrestore(void);
+char *hosttype = "Nt";
+char *cputype = "386";
+
+static void
+pfree(Proc *p)
+{
+	Osenv *e;
+
+	lock(&procs.l);
+	if(p->prev)
+		p->prev->next = p->next;
+	else
+		procs.head = p->next;
+
+	if(p->next)
+		p->next->prev = p->prev;
+	else
+		procs.tail = p->prev;
+	unlock(&procs.l);
+
+	e = p->env;
+	if(e != nil) {
+		closefgrp(e->fgrp);
+		closepgrp(e->pgrp);
+		closeegrp(e->egrp);
+		closesigs(e->sigs);
+	}
+	free(e->user);
+	free(p->prog);
+	free(p);
+}
+
+static ulong erendezvous(void*, ulong);
+
+void
+osblock(void)
+{
+	erendezvous(up, 0);
+}
+
+void
+osready(Proc *p)
+{
+	erendezvous(p, 0);
+}
+
+
+void
+pexit(char *msg, int t)
+{
+	pfree(up);
+	ExitThread(0);
+}
+
+LONG TrapHandler(LPEXCEPTION_POINTERS ureg);
+
+__cdecl
+Exhandler(EXCEPTION_RECORD *rec, void *frame, CONTEXT *context, void *dcon)
+{
+	EXCEPTION_POINTERS ep;
+	ep.ExceptionRecord = rec;
+	ep.ContextRecord = context;
+	TrapHandler(&ep);
+	return ExceptionContinueExecution;
+}
+
+DWORD WINAPI
+tramp(LPVOID p)
+{
+	// install our own exception handler
+	// replacing all others installed on this thread
+	DWORD handler = (DWORD)Exhandler;
+	_asm {
+		mov eax,handler
+		push eax
+		mov eax,-1
+		push eax
+		mov fs:[0],esp
+	}
+		
+	up = p;
+	up->func(up->arg);
+	pexit("", 0);
+	// should never get here but tidy up anyway
+	_asm {
+		mov fs:[0],-1
+		add esp, 8
+	}
+	return 0;
+}
+
+int
+kproc(char *name, void (*func)(void*), void *arg, int flags)
+{
+	DWORD h;
+	Proc *p;
+	Pgrp *pg;
+	Fgrp *fg;
+	Egrp *eg;
+
+	p = newproc();
+	if(p == nil){
+		print("out of kernel processes\n");
+		return -1;
+	}
+		
+	if(flags & KPDUPPG) {
+		pg = up->env->pgrp;
+		incref(&pg->r);
+		p->env->pgrp = pg;
+	}
+	if(flags & KPDUPFDG) {
+		fg = up->env->fgrp;
+		incref(&fg->r);
+		p->env->fgrp = fg;
+	}
+	if(flags & KPDUPENVG) {
+		eg = up->env->egrp;
+		incref(&eg->r);
+		p->env->egrp = eg;
+	}
+
+	p->env->ui = up->env->ui;
+	kstrdup(&p->env->user, up->env->user);
+	strcpy(p->text, name);
+
+	p->func = func;
+	p->arg = arg;
+
+	lock(&procs.l);
+	if(procs.tail != nil) {
+		p->prev = procs.tail;
+		procs.tail->next = p;
+	}
+	else {
+		procs.head = p;
+		p->prev = nil;
+	}
+	procs.tail = p;
+	unlock(&procs.l);
+
+	p->pid = (int)CreateThread(0, 16384, tramp, p, 0, &h);
+	if(p->pid <= 0){
+		pfree(p);
+		print("ran out of  kernel processes\n");
+		return -1;
+	}
+	return p->pid;
+}
+
+#if(_WIN32_WINNT >= 0x0400)
+void APIENTRY sleepintr(DWORD param)
+{
+}
+#endif
+
+void
+oshostintr(Proc *p)
+{
+	if (p->syscall == SOCK_SELECT)
+		return;
+	p->intwait = 0;
+#if(_WIN32_WINNT >= 0x0400)
+	if(p->syscall == SYS_SLEEP) {
+		QueueUserAPC(sleepintr, (HANDLE) p->pid, (DWORD) p->pid);
+	}
+#endif
+}
+
+void
+oslongjmp(void *regs, osjmpbuf env, int val)
+{
+	USED(regs);
+	longjmp(env, val);
+}
+
+int
+readkbd(void)
+{
+	DWORD r;
+	char buf[1];
+
+	if(ReadFile(kbdh, buf, sizeof(buf), &r, 0) == FALSE)
+		panic("keyboard fail");
+	if (r == 0)
+		panic("keyboard EOF");
+
+	if (buf[0] == 0x03) {
+		// INTR (CTRL+C)
+		termrestore();
+		ExitProcess(0);
+	}
+	if(buf[0] == '\r')
+		buf[0] = '\n';
+	return buf[0];
+}
+
+void
+cleanexit(int x)
+{
+	sleep(2);		/* give user a chance to see message */
+	termrestore();
+	ExitProcess(x);
+}
+
+struct ecodes {
+	DWORD	code;
+	char*	name;
+} ecodes[] = {
+	EXCEPTION_ACCESS_VIOLATION,		"Segmentation violation",
+	EXCEPTION_DATATYPE_MISALIGNMENT,	"Data Alignment",
+	EXCEPTION_BREAKPOINT,                	"Breakpoint",
+	EXCEPTION_SINGLE_STEP,               	"SingleStep",
+	EXCEPTION_ARRAY_BOUNDS_EXCEEDED,	"Array Bounds Check",
+	EXCEPTION_FLT_DENORMAL_OPERAND,		"Denormalized Float",
+	EXCEPTION_FLT_DIVIDE_BY_ZERO,		"Floating Point Divide by Zero",
+	EXCEPTION_FLT_INEXACT_RESULT,		"Inexact Floating Point",
+	EXCEPTION_FLT_INVALID_OPERATION,	"Invalid Floating Operation",
+	EXCEPTION_FLT_OVERFLOW,			"Floating Point Result Overflow",
+	EXCEPTION_FLT_STACK_CHECK,		"Floating Point Stack Check",
+	EXCEPTION_FLT_UNDERFLOW,		"Floating Point Result Underflow",
+	EXCEPTION_INT_DIVIDE_BY_ZERO,		"Divide by Zero",
+	EXCEPTION_INT_OVERFLOW,			"Integer Overflow",
+	EXCEPTION_PRIV_INSTRUCTION,		"Privileged Instruction",
+	EXCEPTION_IN_PAGE_ERROR,		"Page-in Error",
+	EXCEPTION_ILLEGAL_INSTRUCTION,		"Illegal Instruction",
+	EXCEPTION_NONCONTINUABLE_EXCEPTION,	"Non-Continuable Exception",
+	EXCEPTION_STACK_OVERFLOW,		"Stack Overflow",
+	EXCEPTION_INVALID_DISPOSITION,		"Invalid Disposition",
+	EXCEPTION_GUARD_PAGE,			"Guard Page Violation",
+	0,					nil
+};
+
+void
+dodisfault(void)
+{
+	disfault(nil, up->env->errstr);
+}
+
+typedef struct Ereg Ereg;
+struct Ereg {
+	Ereg *prev;
+	FARPROC handler;
+};
+
+void
+dumpex()
+{
+	Ereg *er;
+	int i;
+	_asm { mov eax,fs:[0] };
+	_asm { mov [er],eax };
+
+	i = 0;
+	while ((unsigned)er != ~0) {
+		print("handler %ux\n", er->handler);
+		i++;
+	er = er->prev;
+	}
+	print("EXCEPTION CHAIN LENGTH = %d\n", i);
+}
+
+LONG
+TrapHandler(LPEXCEPTION_POINTERS ureg)
+{
+	int i;
+	char *name;
+	DWORD code;
+	// WORD pc;
+	char buf[ERRMAX];
+
+	code = ureg->ExceptionRecord->ExceptionCode;
+	// pc = ureg->ContextRecord->Eip;
+
+	name = nil;
+	for(i = 0; i < nelem(ecodes); i++) {
+		if(ecodes[i].code == code) {
+			name = ecodes[i].name;
+			break;
+		}
+	}
+
+	if(name == nil) {
+		snprint(buf, sizeof(buf), "Unrecognized Machine Trap (%.8lux)\n", code);
+		name = buf;
+	}
+/*
+	if(pc != 0) {
+		snprint(buf, sizeof(buf), "%s: pc=0x%lux", name, pc);
+		name = buf;
+	}
+*/
+	/* YUCK! */
+	strncpy(up->env->errstr, name, ERRMAX);
+	switch (code) {
+	case EXCEPTION_FLT_DENORMAL_OPERAND:
+	case EXCEPTION_FLT_DIVIDE_BY_ZERO:
+	case EXCEPTION_FLT_INEXACT_RESULT:
+	case EXCEPTION_FLT_INVALID_OPERATION:
+	case EXCEPTION_FLT_OVERFLOW:
+	case EXCEPTION_FLT_STACK_CHECK:
+	case EXCEPTION_FLT_UNDERFLOW:
+		/* clear exception flags and register stack */
+		_asm { fnclex };
+		ureg->ContextRecord->FloatSave.StatusWord = 0x0000;
+		ureg->ContextRecord->FloatSave.TagWord = 0xffff;
+	}
+	ureg->ContextRecord->Eip = (DWORD)dodisfault;
+	return EXCEPTION_CONTINUE_EXECUTION;
+}
+
+static void
+termset(void)
+{
+	DWORD flag;
+
+	if(conh != INVALID_HANDLE_VALUE)
+		return;
+	conh = GetStdHandle(STD_OUTPUT_HANDLE);
+	kbdh = GetStdHandle(STD_INPUT_HANDLE);
+
+	// The following will fail if kbdh not from console (e.g. a pipe)
+	// in which case we don't care
+	GetConsoleMode(kbdh, &consolestate);
+	flag = consolestate;
+	flag = flag & ~(ENABLE_PROCESSED_INPUT|ENABLE_LINE_INPUT|ENABLE_ECHO_INPUT);
+	SetConsoleMode(kbdh, flag);
+}
+
+void
+termrestore(void)
+{
+	if(kbdh != INVALID_HANDLE_VALUE)
+		SetConsoleMode(kbdh, consolestate);
+}
+
+static	int	rebootok = 0;	/* is shutdown -r supported? */
+
+void
+osreboot(char *file, char **argv)
+{
+	if(rebootok){
+		termrestore();
+		execvp(file, argv);
+		panic("reboot failure");
+	}
+}
+
+void
+libinit(char *imod)
+{
+	WSADATA wasdat;
+	DWORD lasterror, namelen;
+	OSVERSIONINFO os;
+	char sys[64], uname[64];
+	wchar_t wuname[64];
+	char *uns;
+
+	os.dwOSVersionInfoSize = sizeof(os);
+	if(!GetVersionEx(&os))
+		panic("can't get os version");
+	PlatformId = os.dwPlatformId;
+	if (PlatformId == VER_PLATFORM_WIN32_NT) {	/* true for NT and 2000 */
+		rebootok = 1;
+	} else {
+		rebootok = 0;
+	}
+	termset();
+
+	if((int)INVALID_HANDLE_VALUE != -1 || sizeof(HANDLE) != sizeof(int))
+		panic("invalid handle value or size");
+
+	if(WSAStartup(MAKEWORD(1, 1), &wasdat) != 0)
+		panic("no winsock.dll");
+
+	gethostname(sys, sizeof(sys));
+	kstrdup(&ossysname, sys);
+//	if(sflag == 0)
+//		SetUnhandledExceptionFilter((LPTOP_LEVEL_EXCEPTION_FILTER)TrapHandler);
+
+	path = getenv("PATH");
+	if(path == nil)
+		path = ".";
+
+	up = newproc();
+	if(up == nil)
+		panic("cannot create kernel process");
+
+	strcpy(uname, "inferno");
+	namelen = sizeof(wuname);
+	if(GetUserName(wuname, &namelen) != TRUE) {
+		lasterror = GetLastError();	
+		if(PlatformId == VER_PLATFORM_WIN32_NT || lasterror != ERROR_NOT_LOGGED_ON)
+			print("cannot GetUserName: %d\n", lasterror);
+	} else {
+		uns = narrowen(wuname);
+		snprint(uname, sizeof(uname), "%s", uns);
+		free(uns);
+	}
+	kstrdup(&eve, uname);
+
+	emuinit(imod);
+}
+
+enum
+{
+	NHLOG	= 7,
+	NHASH	= (1<<NHLOG)
+};
+
+typedef struct Tag Tag;
+struct Tag
+{
+	void*	tag;
+	ulong	val;
+	HANDLE	pid;
+	Tag*	next;
+};
+
+static	Tag*	ht[NHASH];
+static	Tag*	ft;
+static	Lock	hlock;
+static	int	nsema;
+
+static ulong
+erendezvous(void *tag, ulong value)
+{
+	int h;
+	ulong rval;
+	Tag *t, **l, *f;
+
+
+	h = (ulong)tag & (NHASH-1);
+
+	lock(&hlock);
+	l = &ht[h];
+	for(t = ht[h]; t; t = t->next) {
+		if(t->tag == tag) {
+			rval = t->val;
+			t->val = value;
+			t->tag = 0;
+			unlock(&hlock);
+			if(SetEvent(t->pid) == FALSE)
+				panic("Release failed\n");
+			return rval;		
+		}
+	}
+
+	t = ft;
+	if(t == 0) {
+		t = malloc(sizeof(Tag));
+		if(t == nil)
+			panic("rendezvous: no memory");
+		t->pid = CreateEvent(0, 0, 0, 0);
+	}
+	else
+		ft = t->next;
+
+	t->tag = tag;
+	t->val = value;
+	t->next = *l;
+	*l = t;
+	unlock(&hlock);
+
+	if(WaitForSingleObject(t->pid, INFINITE) != WAIT_OBJECT_0)
+		panic("WaitForSingleObject failed\n");
+
+	lock(&hlock);
+	rval = t->val;
+	for(f = *l; f; f = f->next) {
+		if(f == t) {
+			*l = f->next;
+			break;
+		}
+		l = &f->next;
+	}
+	t->next = ft;
+	ft = t;
+	unlock(&hlock);
+
+	return rval;
+}
+
+void
+FPsave(void *fptr)
+{
+	_asm {
+		mov	eax, fptr
+		fstenv	[eax]
+	}
+}
+
+void
+FPrestore(void *fptr)
+{
+	_asm {
+		mov	eax, fptr
+		fldenv	[eax]
+	}
+}
+
+ulong
+umult(ulong a, ulong b, ulong *high)
+{
+	ulong lo, hi;
+
+	_asm {
+		mov	eax, a
+		mov	ecx, b
+		MUL	ecx
+		mov	lo, eax
+		mov	hi, edx
+	}
+	*high = hi;
+	return lo;
+}
+
+int
+close(int fd)
+{
+	if(fd == -1)
+		return 0;
+	CloseHandle(ntfd2h(fd));
+	return 0;
+}
+
+int
+read(int fd, void *buf, uint n)
+{
+	if(!ReadFile(ntfd2h(fd), buf, n, &n, NULL))
+		return -1;
+	return n;
+}
+
+int
+write(int fd, void *buf, uint n)
+{
+	if(fd == 1 || fd == 2){
+		if(conh == INVALID_HANDLE_VALUE){
+			termset();
+			if(conh == INVALID_HANDLE_VALUE)
+				return -1;
+		}
+		if(!WriteFile(conh, buf, n, &n, NULL))
+			return -1;
+		return n;
+	}
+	if(!WriteFile(ntfd2h(fd), buf, n, &n, NULL))
+		return -1;
+	return n;
+}
+
+/*
+ * map handles and fds.
+ * this code assumes sizeof(HANDLE) == sizeof(int),
+ * that INVALID_HANDLE_VALUE is -1, and assumes
+ * that all tests of invalid fds check only for -1, not < 0
+ */
+int
+nth2fd(HANDLE h)
+{
+	return (int)h;
+}
+
+HANDLE
+ntfd2h(int fd)
+{
+	return (HANDLE)fd;
+}
+
+void
+oslopri(void)
+{
+	SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_BELOW_NORMAL);
+}
+
+/* Resolve system header name conflict */
+#undef Sleep
+void
+sleep(int secs)
+{
+	Sleep(secs*1000);
+}
+
+void*
+sbrk(int size)
+{
+	void *brk;
+
+	brk = VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_EXECUTE_READWRITE); 	
+	if(brk == 0)
+		return (void*)-1;
+
+	return brk;
+}
+
+ulong
+getcallerpc(void *arg)
+{
+	ulong cpc;
+	_asm {
+		mov eax, dword ptr [ebp]
+		mov eax, dword ptr [eax+4]
+		mov dword ptr cpc, eax
+	}
+	return cpc;
+}
+
+/*
+ * Return an abitrary millisecond clock time
+ */
+long
+osmillisec(void)
+{
+	return GetTickCount();
+}
+
+#define SEC2MIN 60L
+#define SEC2HOUR (60L*SEC2MIN)
+#define SEC2DAY (24L*SEC2HOUR)
+
+/*
+ *  days per month plus days/year
+ */
+static	int	dmsize[] =
+{
+	365, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
+};
+static	int	ldmsize[] =
+{
+	366, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
+};
+
+/*
+ *  return the days/month for the given year
+ */
+static int*
+yrsize(int yr)
+{
+	/* a leap year is a multiple of 4, excluding centuries
+	 * that are not multiples of 400 */
+	if( (yr % 4 == 0) && (yr % 100 != 0 || yr % 400 == 0) )
+		return ldmsize;
+	else
+		return dmsize;
+}
+
+static long
+tm2sec(SYSTEMTIME *tm)
+{
+	long secs;
+	int i, *d2m;
+
+	secs = 0;
+
+	/*
+	 *  seconds per year
+	 */
+	for(i = 1970; i < tm->wYear; i++){
+		d2m = yrsize(i);
+		secs += d2m[0] * SEC2DAY;
+	}
+
+	/*
+	 *  seconds per month
+	 */
+	d2m = yrsize(tm->wYear);
+	for(i = 1; i < tm->wMonth; i++)
+		secs += d2m[i] * SEC2DAY;
+
+	/*
+	 * secs in last month
+	 */
+	secs += (tm->wDay-1) * SEC2DAY;
+
+	/*
+	 * hours, minutes, seconds
+	 */
+	secs += tm->wHour * SEC2HOUR;
+	secs += tm->wMinute * SEC2MIN;
+	secs += tm->wSecond;
+
+	return secs;
+}
+
+long
+time(long *tp)
+{
+	SYSTEMTIME tm;
+	long t;
+
+	GetSystemTime(&tm);
+	t = tm2sec(&tm);
+	if(tp != nil)
+		*tp = t;
+	return t;
+}
+
+/*
+ * Return the time since the epoch in microseconds
+ * The epoch is defined at 1 Jan 1970
+ */
+vlong
+osusectime(void)
+{
+	SYSTEMTIME tm;
+	vlong secs;
+
+	GetSystemTime(&tm);
+	secs = tm2sec(&tm);
+	return secs * 1000000 + tm.wMilliseconds * 1000;
+}
+
+vlong
+osnsec(void)
+{
+	return osusectime()*1000;	/* TO DO better */
+}
+
+int
+osmillisleep(ulong milsec)
+{
+	SleepEx(milsec, FALSE);
+	return 0;
+}
+
+int
+limbosleep(ulong milsec)
+{
+	if (sleepers > MAXSLEEPERS)
+		return -1;
+	sleepers++;
+	up->syscall = SYS_SLEEP;
+	SleepEx(milsec, TRUE);
+	up->syscall = 0;
+	sleepers--;
+	return 0;
+}
+
+void
+osyield(void)
+{	
+	sleep(0);
+}
+
+void
+ospause(void)
+{
+      for(;;)
+              sleep(1000000);
+}
+
+/*
+ * these should never be called, and are included
+ * as stubs since we are linking against a library which defines them
+ */
+int
+open(const char *path, int how, ...)
+{
+	panic("open");
+	return -1;
+}
+
+int
+creat(const char *path, int how)
+{
+	panic("creat");
+	return -1;
+}
+
+int
+stat(const char *path, struct stat *sp)
+{
+	panic("stat");
+	return -1;
+}
+
+int
+chown(const char *path, int uid, int gid)
+{
+	panic("chown");
+	return -1;
+}
+
+int
+chmod(const char *path, int mode)
+{
+	panic("chmod");
+	return -1;
+}
+
+void
+link(char *path, char *next)
+{
+	panic("link");
+}
+
+int
+segflush(void *a, ulong n)
+{
+	return 0;
+}
+
+wchar_t *
+widen(char *s)
+{
+	int n;
+	wchar_t *ws;
+
+	n = utflen(s) + 1;
+	ws = smalloc(n*sizeof(wchar_t));
+	utftorunes(ws, s, n);
+	return ws;
+}
+
+
+char *
+narrowen(wchar_t *ws)
+{
+	char *s;
+	int n;
+
+	n = widebytes(ws);
+	s = smalloc(n);
+	runestoutf(s, ws, n);
+	return s;
+}
+
+
+int
+widebytes(wchar_t *ws)
+{
+	int n = 0;
+
+	while (*ws)
+		n += runelen(*ws++);
+	return n+1;
+}