xref: /netbsd-src/sys/arch/amiga/dev/ite.c (revision 1b9578b8c2c1f848eeb16dabbfd7d1f0d9fdefbd)
1 /*	$NetBSD: ite.c,v 1.92 2011/04/24 16:26:52 rmind Exp $ */
2 
3 /*
4  * Copyright (c) 1988 University of Utah.
5  * Copyright (c) 1990 The Regents of the University of California.
6  * All rights reserved.
7  *
8  * This code is derived from software contributed to Berkeley by
9  * the Systems Programming Group of the University of Utah Computer
10  * Science Department.
11  *
12  * Redistribution and use in source and binary forms, with or without
13  * modification, are permitted provided that the following conditions
14  * are met:
15  * 1. Redistributions of source code must retain the above copyright
16  *    notice, this list of conditions and the following disclaimer.
17  * 2. Redistributions in binary form must reproduce the above copyright
18  *    notice, this list of conditions and the following disclaimer in the
19  *    documentation and/or other materials provided with the distribution.
20  * 3. Neither the name of the University nor the names of its contributors
21  *    may be used to endorse or promote products derived from this software
22  *    without specific prior written permission.
23  *
24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34  * SUCH DAMAGE.
35  *
36  *	from: Utah Hdr: ite.c 1.1 90/07/09
37  *	@(#)ite.c 7.6 (Berkeley) 5/16/91
38  */
39 
40 /*
41  * ite - bitmaped terminal.
42  * Supports VT200, a few terminal features will be unavailable until
43  * the system actually probes the device (i.e. not after consinit())
44  */
45 
46 #include "opt_ddb.h"
47 
48 #include <sys/cdefs.h>
49 __KERNEL_RCSID(0, "$NetBSD: ite.c,v 1.92 2011/04/24 16:26:52 rmind Exp $");
50 
51 #include <sys/param.h>
52 #include <sys/kernel.h>
53 #include <sys/device.h>
54 #include <sys/fcntl.h>
55 #include <sys/malloc.h>
56 #include <sys/ioctl.h>
57 #include <sys/tty.h>
58 #include <sys/termios.h>
59 #include <sys/systm.h>
60 #include <sys/callout.h>
61 #include <sys/proc.h>
62 #include <dev/cons.h>
63 #include <sys/kauth.h>
64 #include <amiga/amiga/cc.h>
65 #include <amiga/amiga/color.h>	/* DEBUG */
66 #include <amiga/amiga/custom.h>	/* DEBUG */
67 #include <amiga/amiga/device.h>
68 #include <amiga/amiga/isr.h>
69 #include <amiga/dev/iteioctl.h>
70 #include <amiga/dev/itevar.h>
71 #include <amiga/dev/kbdmap.h>
72 #include <amiga/dev/grfioctl.h>
73 #include <amiga/dev/grfvar.h>
74 
75 #include <machine/cpu.h>	/* for is_draco() */
76 
77 #include <sys/conf.h>
78 
79 #include "grfcc.h"
80 #include "ite.h"
81 
82 /*
83  * XXX go ask sys/kern/tty.c:ttselect()
84  */
85 
86 #define ITEUNIT(dev)	(minor(dev))
87 
88 #define SUBR_INIT(ip)		(ip)->grf->g_iteinit(ip)
89 #define SUBR_DEINIT(ip)		(ip)->grf->g_itedeinit(ip)
90 #define SUBR_PUTC(ip,c,dy,dx,m)	(ip)->grf->g_iteputc(ip,c,dy,dx,m)
91 #define SUBR_CURSOR(ip,flg)	(ip)->grf->g_itecursor(ip,flg)
92 #define SUBR_CLEAR(ip,sy,sx,h,w)	(ip)->grf->g_iteclear(ip,sy,sx,h,w)
93 #define SUBR_SCROLL(ip,sy,sx,count,dir)	\
94     (ip)->grf->g_itescroll(ip,sy,sx,count,dir)
95 
96 int	start_repeat_timeo = 30;	/* first repeat after x s/100 */
97 int	next_repeat_timeo = 10;		/* next repeat after x s/100 */
98 
99 int	ite_default_wrap = 1;		/* you want vtxxx-nam, binpatch */
100 
101 struct	ite_softc con_itesoftc;
102 u_char	cons_tabs[MAX_TABS];
103 
104 struct ite_softc *kbd_ite;
105 
106 /* audio bell stuff */
107 u_int bvolume = 10;
108 u_int bpitch = 660;
109 u_int bmsec = 75;
110 
111 static char *bsamplep;
112 static char sample[20] = {
113 	0,39,75,103,121,127,121,103,75,39,0,
114 	-39,-75,-103,-121,-127,-121,-103,-75,-39
115 };
116 
117 static callout_t repeat_ch;
118 
119 void iteputchar(int c, struct ite_softc *ip);
120 void ite_putstr(const char * s, int len, dev_t dev);
121 void iteattach(struct device *, struct device *, void *);
122 int itematch(struct device *, struct cfdata *, void *);
123 static void iteprecheckwrap(struct ite_softc *);
124 static void itecheckwrap(struct ite_softc *);
125 struct ite_softc *getitesp(dev_t);
126 void init_bell(void);
127 void ite_bell(void);
128 void itecnpollc(dev_t, int);
129 static void repeat_handler(void *);
130 inline static void ite_sendstr(const char *);
131 static void alignment_display(struct ite_softc *);
132 inline static void snap_cury(struct ite_softc *);
133 inline static void ite_dnchar(struct ite_softc *, int);
134 inline static void ite_inchar(struct ite_softc *, int);
135 inline static void ite_clrtoeol(struct ite_softc *);
136 inline static void ite_clrtobol(struct ite_softc *);
137 inline static void ite_clrline(struct ite_softc *);
138 inline static void ite_clrtoeos(struct ite_softc *);
139 inline static void ite_clrtobos(struct ite_softc *);
140 inline static void ite_clrscreen(struct ite_softc *);
141 inline static void ite_dnline(struct ite_softc *, int);
142 inline static void ite_inline(struct ite_softc *, int);
143 inline static void ite_lf(struct ite_softc *);
144 inline static void ite_crlf(struct ite_softc *);
145 inline static void ite_cr(struct ite_softc *);
146 inline static void ite_rlf(struct ite_softc *);
147 inline static int atoi(const char *);
148 inline static int ite_argnum(struct ite_softc *);
149 inline static int ite_zargnum(struct ite_softc *);
150 
151 CFATTACH_DECL(ite, sizeof(struct ite_softc),
152     itematch, iteattach, NULL, NULL);
153 
154 extern struct cfdriver ite_cd;
155 
156 dev_type_open(iteopen);
157 dev_type_close(iteclose);
158 dev_type_read(iteread);
159 dev_type_write(itewrite);
160 dev_type_ioctl(iteioctl);
161 dev_type_tty(itetty);
162 dev_type_poll(itepoll);
163 
164 const struct cdevsw ite_cdevsw = {
165 	iteopen, iteclose, iteread, itewrite, iteioctl,
166 	nostop, itetty, itepoll, nommap, ttykqfilter, D_TTY
167 };
168 
169 int
170 itematch(struct device *pdp, struct cfdata *cfp, void *auxp)
171 {
172 	struct grf_softc *gp;
173 	int maj;
174 
175 	gp = auxp;
176 
177 	/*
178 	 * XXX
179 	 * normally this would be done in attach, however
180 	 * during early init we do not have a device pointer
181 	 * and thus no unit number.
182 	 */
183 	maj = cdevsw_lookup_major(&ite_cdevsw);
184 	gp->g_itedev = makedev(maj, cfp->cf_unit);
185 	return(1);
186 }
187 
188 void
189 iteattach(struct device *pdp, struct device *dp, void *auxp)
190 {
191 	struct grf_softc *gp;
192 	struct ite_softc *ip;
193 	int s;
194 
195 	gp = (struct grf_softc *)auxp;
196 	if (dp) {
197 		ip = (struct ite_softc *)dp;
198 
199 		s = spltty();
200 		if (con_itesoftc.grf != NULL &&
201 		    con_itesoftc.grf->g_unit == gp->g_unit) {
202 			/*
203 			 * console reinit copy params over.
204 			 * and console always gets keyboard
205 			 */
206 			memcpy(&ip->grf, &con_itesoftc.grf,
207 			    (char *)&ip[1] - (char *)&ip->grf);
208 			con_itesoftc.grf = NULL;
209 			kbd_ite = ip;
210 		}
211 		ip->grf = gp;
212 		splx(s);
213 
214 		iteinit(gp->g_itedev);
215 		printf(": rows %d cols %d", ip->rows, ip->cols);
216 		printf(" repeat at (%d/100)s next at (%d/100)s",
217 		    start_repeat_timeo, next_repeat_timeo);
218 
219 		if (kbd_ite == NULL)
220 			kbd_ite = ip;
221 		if (kbd_ite == ip)
222 			printf(" has keyboard");
223 		printf("\n");
224 		ip->flags |= ITE_ATTACHED;
225 	} else {
226 		if (con_itesoftc.grf != NULL &&
227 		    con_itesoftc.grf->g_conpri > gp->g_conpri)
228 			return;
229 		con_itesoftc.grf = gp;
230 		con_itesoftc.tabs = cons_tabs;
231 	}
232 }
233 
234 struct ite_softc *
235 getitesp(dev_t dev)
236 {
237 	if (amiga_realconfig && con_itesoftc.grf == NULL)
238 		return(device_lookup_private(&ite_cd, ITEUNIT(dev)));
239 
240 	if (con_itesoftc.grf == NULL)
241 		panic("no ite_softc for console");
242 	return(&con_itesoftc);
243 }
244 
245 /*
246  * cons.c entry points into ite device.
247  */
248 
249 /*
250  * Return a priority in consdev->cn_pri field highest wins.  This function
251  * is called before any devices have been probed.
252  */
253 void
254 itecnprobe(struct consdev *cd)
255 {
256 	/*
257 	 * bring graphics layer up.
258 	 */
259 	config_console();
260 
261 	/*
262 	 * return priority of the best ite (already picked from attach)
263 	 * or CN_DEAD.
264 	 */
265 	if (con_itesoftc.grf == NULL)
266 		cd->cn_pri = CN_DEAD;
267 	else {
268 		cd->cn_pri = con_itesoftc.grf->g_conpri;
269 		cd->cn_dev = con_itesoftc.grf->g_itedev;
270 	}
271 }
272 
273 /* audio bell stuff */
274 void
275 init_bell(void)
276 {
277 	if (bsamplep != NULL)
278 		return;
279 	bsamplep = alloc_chipmem(20);
280 	if (bsamplep == NULL)
281 		panic("no chipmem for ite_bell");
282 
283 	memcpy(bsamplep, sample, 20);
284 }
285 
286 void
287 ite_bell(void)
288 {
289 	u_int clock;
290 	u_int period;
291 	u_int count;
292 
293 	clock = 3579545; 	/* PAL 3546895 */
294 
295 	/*
296 	 * the number of clock ticks per sample byte must be > 124
297 	 * ergo bpitch must be < clock / 124*20
298 	 * i.e. ~1443, 1300 to be safe (PAL etc.). also not zero obviously
299 	 */
300 	period = clock / (bpitch * 20);
301 	count = bmsec * bpitch / 1000;
302 
303 	play_sample(10, PREP_DMA_MEM(bsamplep), period, bvolume, 0x3, count);
304 }
305 
306 void
307 itecninit(struct consdev *cd)
308 {
309 	struct ite_softc *ip;
310 
311 	ip = getitesp(cd->cn_dev);
312 	iteinit(cd->cn_dev);
313 	ip->flags |= ITE_ACTIVE | ITE_ISCONS;
314 
315 #ifdef DRACO
316 	if (!is_draco())
317 #endif
318 	init_bell();
319 }
320 
321 /*
322  * ite_cnfinish() is called in ite_init() when the device is
323  * being probed in the normal fasion, thus we can finish setting
324  * up this ite now that the system is more functional.
325  */
326 void
327 ite_cnfinish(struct ite_softc *ip)
328 {
329 	static int done;
330 
331 	if (done)
332 		return;
333 	done = 1;
334 }
335 
336 int
337 itecngetc(dev_t dev)
338 {
339 	int c;
340 
341 	/* XXX this should be moved */
342 	kbdenable();
343 	do {
344 		c = kbdgetcn();
345 		c = ite_cnfilter(c, ITEFILT_CONSOLE);
346 	} while (c == -1);
347 	return (c);
348 }
349 
350 void
351 itecnputc(dev_t dev, int c)
352 {
353 	static int paniced;
354 	struct ite_softc *ip;
355 	char ch;
356 
357 	ip = getitesp(dev);
358 	ch = c;
359 
360 	if (panicstr && !paniced &&
361 	    (ip->flags & (ITE_ACTIVE | ITE_INGRF)) != ITE_ACTIVE) {
362 		ite_on(dev, 3);
363 		paniced = 1;
364 	}
365 	iteputchar(ch, ip);
366 }
367 
368 void
369 itecnpollc(dev_t dev, int on)
370 {
371 }
372 
373 /*
374  * standard entry points to the device.
375  */
376 
377 /*
378  * iteinit() is the standard entry point for initialization of
379  * an ite device, it is also called from ite_cninit().
380  *
381  */
382 void
383 iteinit(dev_t dev)
384 {
385 	struct ite_softc *ip;
386 	static int kbdmap_loaded = 0;
387 
388 	ip = getitesp(dev);
389 	if (ip->flags & ITE_INITED)
390 		return;
391 	if (kbdmap_loaded == 0) {
392 		memcpy(&kbdmap, &ascii_kbdmap, sizeof(struct kbdmap));
393 		kbdmap_loaded = 1;
394 	}
395 
396 	callout_init(&repeat_ch, 0);
397 
398 	ip->cursorx = 0;
399 	ip->cursory = 0;
400 	if (ip->grf->g_iteinit == NULL)
401 		return;  /* grf has no console */
402 	SUBR_INIT(ip);
403 	SUBR_CURSOR(ip, DRAW_CURSOR);
404 	if (ip->tabs == NULL)
405 		ip->tabs = malloc(MAX_TABS * sizeof(u_char),M_DEVBUF,M_WAITOK);
406 	ite_reset(ip);
407 	ip->flags |= ITE_INITED;
408 }
409 
410 int
411 iteopen(dev_t dev, int mode, int devtype, struct lwp *l)
412 {
413 	struct ite_softc *ip;
414 	struct tty *tp;
415 	int error, first, unit;
416 
417 	unit = ITEUNIT(dev);
418 	first = 0;
419 
420 	if (unit >= ite_cd.cd_ndevs)
421 		return ENXIO;
422 	ip = getitesp(dev);
423 	if (ip == NULL)
424 		return ENXIO;
425 	if ((ip->flags & ITE_ATTACHED) == 0)
426 		return ENXIO;
427 
428 	if (ip->tp == NULL) {
429 		tp = ip->tp = tty_alloc();
430 		tty_attach(tp);
431 	} else
432 		tp = ip->tp;
433 
434 	if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp))
435 		return (EBUSY);
436 
437 	if ((ip->flags & ITE_ACTIVE) == 0) {
438 		ite_on(dev, 0);
439 		first = 1;
440 	}
441 	tp->t_oproc = itestart;
442 	tp->t_param = ite_param;
443 	tp->t_dev = dev;
444 	if ((tp->t_state & TS_ISOPEN) == 0 && tp->t_wopen == 0) {
445 		ttychars(tp);
446 		tp->t_iflag = TTYDEF_IFLAG;
447 		tp->t_oflag = TTYDEF_OFLAG;
448 		tp->t_cflag = TTYDEF_CFLAG;
449 		tp->t_lflag = TTYDEF_LFLAG;
450 		tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
451 		tp->t_state = TS_CARR_ON;
452 		ttsetwater(tp);
453 	}
454 	error = ttyopen(tp, 0, mode & O_NONBLOCK);
455 	if (error)
456 		goto bad;
457 
458 	error = tp->t_linesw->l_open(dev, tp);
459 	if (error)
460 		goto bad;
461 
462 	tp->t_winsize.ws_row = ip->rows;
463 	tp->t_winsize.ws_col = ip->cols;
464 	kbdenable();
465 	return (0);
466 bad:
467 	if (first)
468 		ite_off(dev, 0);
469 	return (error);
470 }
471 
472 int
473 iteclose(dev_t dev, int flag, int mode, struct lwp *l)
474 {
475 	struct tty *tp;
476 
477 	tp = getitesp(dev)->tp;
478 
479 	KDASSERT(tp);
480 	tp->t_linesw->l_close(tp, flag);
481 	ttyclose(tp);
482 	ite_off(dev, 0);
483 	return (0);
484 }
485 
486 int
487 iteread(dev_t dev, struct uio *uio, int flag)
488 {
489 	struct tty *tp;
490 
491 	tp = getitesp(dev)->tp;
492 
493 	KDASSERT(tp);
494 	return tp->t_linesw->l_read(tp, uio, flag);
495 }
496 
497 int
498 itewrite(dev_t dev, struct uio *uio, int flag)
499 {
500 	struct tty *tp;
501 
502 	tp = getitesp(dev)->tp;
503 
504 	KDASSERT(tp);
505 	return tp->t_linesw->l_write(tp, uio, flag);
506 }
507 
508 int
509 itepoll(dev_t dev, int events, struct lwp *l)
510 {
511 	struct tty *tp;
512 
513 	tp = getitesp(dev)->tp;
514 
515 	KDASSERT(tp);
516 	return ((*tp->t_linesw->l_poll)(tp, events, l));
517 }
518 
519 struct tty *
520 itetty(dev_t dev)
521 {
522 	return (getitesp(dev)->tp);
523 }
524 
525 int
526 iteioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l)
527 {
528 	struct iterepeat *irp;
529 	struct ite_softc *ip;
530 	struct itebell *ib;
531 	struct tty *tp;
532 	int error;
533 
534 	ip = getitesp(dev);
535 	tp = ip->tp;
536 
537 	KDASSERT(tp);
538 
539 	error = tp->t_linesw->l_ioctl(tp, cmd, addr, flag, l);
540 	if (error != EPASSTHROUGH)
541 		return (error);
542 	error = ttioctl(tp, cmd, addr, flag, l);
543 	if (error != EPASSTHROUGH)
544 		return (error);
545 
546 	switch (cmd) {
547 	case ITEIOCGBELL:
548 		ib = (struct itebell *)addr;
549 		ib->volume = bvolume;
550 		ib->pitch = bpitch;
551 		ib->msec = bmsec;
552 		return (0);
553 	case ITEIOCSBELL:
554 		ib = (struct itebell *)addr;
555 
556 		if (ib->pitch > MAXBPITCH || ib->pitch < MINBPITCH ||
557 		    ib->volume > MAXBVOLUME || ib->msec > MAXBTIME)
558 			return (EINVAL);
559 		bvolume = ib->volume;
560 		bpitch = ib->pitch;
561 		bmsec = ib->msec;
562 		return (0);
563 	case ITEIOCSKMAP:
564 		if (addr == 0)
565 			return(EFAULT);
566 		memcpy(&kbdmap, addr, sizeof(struct kbdmap));
567 		return(0);
568 	case ITEIOCGKMAP:
569 		if (addr == NULL)
570 			return(EFAULT);
571 		memcpy(addr, &kbdmap, sizeof(struct kbdmap));
572 		return(0);
573 	case ITEIOCGREPT:
574 		irp = (struct iterepeat *)addr;
575 		irp->start = start_repeat_timeo;
576 		irp->next = next_repeat_timeo;
577 		return (0);
578 	case ITEIOCSREPT:
579 		irp = (struct iterepeat *)addr;
580 		if (irp->start < ITEMINREPEAT && irp->next < ITEMINREPEAT)
581 			return(EINVAL);
582 		start_repeat_timeo = irp->start;
583 		next_repeat_timeo = irp->next;
584 		return(0);
585 	}
586 #if NGRFCC > 0
587 	/* XXX */
588 	if (minor(dev) == 0) {
589 		error = ite_grf_ioctl(ip, cmd, addr, flag, l);
590 		if (error >= 0)
591 			return (error);
592 	}
593 #endif
594 	return (EPASSTHROUGH);
595 }
596 
597 void
598 itestart(struct tty *tp)
599 {
600 	struct clist *rbp;
601 	struct ite_softc *ip;
602 	u_char buf[ITEBURST];
603 	int s, len;
604 
605 	ip = getitesp(tp->t_dev);
606 
607 	KDASSERT(tp);
608 
609 	s = spltty(); {
610 		if (tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))
611 			goto out;
612 
613 		tp->t_state |= TS_BUSY;
614 		rbp = &tp->t_outq;
615 
616 		len = q_to_b(rbp, buf, ITEBURST);
617 	} splx(s);
618 
619 	/* Here is a really good place to implement pre/jumpscroll() */
620 	ite_putstr(buf, len, tp->t_dev);
621 
622 	s = spltty(); {
623 		tp->t_state &= ~TS_BUSY;
624 		/* we have characters remaining. */
625 		if (ttypull(tp)) {
626 			tp->t_state |= TS_TIMEOUT;
627 			callout_schedule(&tp->t_rstrt_ch, 1);
628 		}
629 	}
630  out:
631 	splx(s);
632 }
633 
634 void
635 ite_on(dev_t dev, int flag)
636 {
637 	struct ite_softc *ip;
638 	int unit;
639 
640 	unit = ITEUNIT(dev);
641 	ip = getitesp(dev);
642 
643 	/* force ite active, overriding graphics mode */
644 	if (flag & 1) {
645 		ip->flags |= ITE_ACTIVE;
646 		ip->flags &= ~(ITE_INGRF | ITE_INITED);
647 	}
648 	/* leave graphics mode */
649 	if (flag & 2) {
650 		ip->flags &= ~ITE_INGRF;
651 		if ((ip->flags & ITE_ACTIVE) == 0)
652 			return;
653 	}
654 	ip->flags |= ITE_ACTIVE;
655 	if (ip->flags & ITE_INGRF)
656 		return;
657 	iteinit(dev);
658 }
659 
660 void
661 ite_off(dev_t dev, int flag)
662 {
663 	struct ite_softc *ip;
664 
665 	ip = getitesp(dev);
666 	if (flag & 2)
667 		ip->flags |= ITE_INGRF;
668 	if ((ip->flags & ITE_ACTIVE) == 0)
669 		return;
670 	if ((flag & 1) ||
671 	    (ip->flags & (ITE_INGRF | ITE_ISCONS | ITE_INITED)) == ITE_INITED)
672 		SUBR_DEINIT(ip);
673 	/* XXX hmm grfon() I think wants this to  go inactive. */
674 	if ((flag & 2) == 0)
675 		ip->flags &= ~ITE_ACTIVE;
676 }
677 
678 /* XXX called after changes made in underlying grf layer. */
679 /* I want to nuke this */
680 void
681 ite_reinit(dev_t dev)
682 {
683 	struct ite_softc *ip;
684 
685 	ip = getitesp(dev);
686 	ip->flags &= ~ITE_INITED;
687 	iteinit(dev);
688 }
689 
690 int
691 ite_param(struct tty *tp, struct termios *t)
692 {
693 	tp->t_ispeed = t->c_ispeed;
694 	tp->t_ospeed = t->c_ospeed;
695 	tp->t_cflag = t->c_cflag;
696 	return (0);
697 }
698 
699 void
700 ite_reset(struct ite_softc *ip)
701 {
702 	int i;
703 
704 	ip->curx = 0;
705 	ip->cury = 0;
706 	ip->attribute = ATTR_NOR;
707 	ip->save_curx = 0;
708 	ip->save_cury = 0;
709 	ip->save_attribute = ATTR_NOR;
710 	ip->ap = ip->argbuf;
711 	ip->emul_level = 0;
712 	ip->eightbit_C1 = 0;
713 	ip->top_margin = 0;
714 	ip->bottom_margin = ip->rows - 1;
715 	ip->inside_margins = 0;
716 	ip->linefeed_newline = 0;
717 	ip->auto_wrap = ite_default_wrap;
718 	ip->cursor_appmode = 0;
719 	ip->keypad_appmode = 0;
720 	ip->imode = 0;
721 	ip->key_repeat = 1;
722 	memset(ip->tabs, 0, ip->cols);
723 	for (i = 0; i < ip->cols; i++)
724 		ip->tabs[i] = ((i & 7) == 0);
725 }
726 
727 /*
728  * has to be global because of the shared filters.
729  */
730 static u_char key_mod;
731 static u_char last_dead;
732 
733 /* Used in console at startup only */
734 int
735 ite_cnfilter(u_char c, enum caller caller)
736 {
737 	struct key key;
738 	u_char code, up, mask;
739 	int s, i;
740 
741 	up = c & 0x80 ? 1 : 0;
742 	c &= 0x7f;
743 	code = 0;
744 
745 	s = spltty();
746 
747 	i = (int)c - KBD_LEFT_SHIFT;
748 	if (i >= 0 && i <= (KBD_RIGHT_META - KBD_LEFT_SHIFT)) {
749 		mask = 1 << i;
750 		if (up)
751 			key_mod &= ~mask;
752 		else
753 			key_mod |= mask;
754 		splx(s);
755 		return -1;
756 	}
757 
758 	if (up) {
759 		splx(s);
760 		return -1;
761 	}
762 
763 	/* translate modifiers */
764 	if (key_mod & KBD_MOD_SHIFT) {
765 		if (key_mod & KBD_MOD_ALT)
766 			key = kbdmap.alt_shift_keys[c];
767 		else
768 			key = kbdmap.shift_keys[c];
769 	} else if (key_mod & KBD_MOD_ALT)
770 		key = kbdmap.alt_keys[c];
771 	else {
772 		key = kbdmap.keys[c];
773 		/* if CAPS and key is CAPable (no pun intended) */
774 		if ((key_mod & KBD_MOD_CAPS) && (key.mode & KBD_MODE_CAPS))
775 			key = kbdmap.shift_keys[c];
776 	}
777 	code = key.code;
778 
779 	/* if string return */
780 	if (key.mode & (KBD_MODE_STRING | KBD_MODE_KPAD)) {
781 		splx(s);
782 		return -1;
783 	}
784 	/* handle dead keys */
785 	if (key.mode & KBD_MODE_DEAD) {
786 		/* if entered twice, send accent itself */
787 		if (last_dead == (key.mode & KBD_MODE_ACCMASK))
788 			last_dead = 0;
789 		else {
790 			last_dead = key.mode & KBD_MODE_ACCMASK;
791 			splx(s);
792 			return -1;
793 		}
794 	}
795 	if (last_dead) {
796 		/* can't apply dead flag to string-keys */
797 		if (code >= '@' && code < 0x7f)
798 			code =
799 			    acctable[KBD_MODE_ACCENT(last_dead)][code - '@'];
800 		last_dead = 0;
801 	}
802 	if (key_mod & KBD_MOD_CTRL)
803 		code &= 0x1f;
804 	if (key_mod & KBD_MOD_META)
805 		code |= 0x80;
806 
807 	/* do console mapping. */
808 	code = code == '\r' ? '\n' : code;
809 
810 	splx(s);
811 	return (code);
812 }
813 
814 /* And now the old stuff. */
815 
816 /* these are used to implement repeating keys.. */
817 static u_char last_char;
818 static u_char tout_pending;
819 
820 /*ARGSUSED*/
821 static void
822 repeat_handler(void *arg)
823 {
824 	tout_pending = 0;
825 	if (last_char)
826 		ite_filter(last_char, ITEFILT_REPEATER);
827 }
828 
829 void
830 ite_filter(u_char c, enum caller caller)
831 {
832 	struct tty *kbd_tty;
833 	u_char code, *str, up, mask;
834 	struct key key;
835 	int s, i;
836 
837 	if (kbd_ite == NULL || kbd_ite->tp == NULL)
838 		return;
839 
840 	kbd_tty = kbd_ite->tp;
841 
842 	/* have to make sure we're at spltty in here */
843 	s = spltty();
844 
845 	up = c & 0x80 ? 1 : 0;
846 	c &= 0x7f;
847 	code = 0;
848 
849 	i = (int)c - KBD_LEFT_SHIFT;
850 	if (i >= 0 && i <= (KBD_RIGHT_META - KBD_LEFT_SHIFT)) {
851 		mask = 1 << i;
852 		if (up)
853 			key_mod &= ~mask;
854 		else
855 			key_mod |= mask;
856 		splx(s);
857 		return;
858 	}
859 	/* stop repeating on up event */
860 	if (up) {
861 		if (tout_pending) {
862 			callout_stop(&repeat_ch);
863 			tout_pending = 0;
864 			last_char = 0;
865 		}
866 		splx(s);
867 		return;
868 	} else if (tout_pending && last_char != c) {
869 		/* different character, stop also */
870 		callout_stop(&repeat_ch);
871 		tout_pending = 0;
872 		last_char = 0;
873 	}
874 	/* Safety button, switch back to ascii keymap. */
875 	if (key_mod == (KBD_MOD_LALT | KBD_MOD_LMETA) && c == 0x50) {
876 		memcpy(&kbdmap, &ascii_kbdmap, sizeof(struct kbdmap));
877 
878 		splx(s);
879 		return;
880 #ifdef DDB
881 	} else if (key_mod == (KBD_MOD_LALT | KBD_MOD_LMETA) && c == 0x59) {
882 		Debugger();
883 		splx(s);
884 		return;
885 #endif
886 	}
887 	/* translate modifiers */
888 	if (key_mod & KBD_MOD_SHIFT) {
889 		if (key_mod & KBD_MOD_ALT)
890 			key = kbdmap.alt_shift_keys[c];
891 		else
892 			key = kbdmap.shift_keys[c];
893 	} else if (key_mod & KBD_MOD_ALT)
894 		key = kbdmap.alt_keys[c];
895 	else {
896 		key = kbdmap.keys[c];
897 		/* if CAPS and key is CAPable (no pun intended) */
898 		if ((key_mod & KBD_MOD_CAPS) && (key.mode & KBD_MODE_CAPS))
899 			key = kbdmap.shift_keys[c];
900 	}
901 	code = key.code;
902 
903 	/*
904 	 * arrange to repeat the keystroke. By doing this at the level
905 	 * of scan-codes, we can have function keys, and keys that
906 	 * send strings, repeat too. This also entitles an additional
907 	 * overhead, since we have to do the conversion each time, but
908 	 * I guess that's ok.
909 	 */
910 	if (!tout_pending && caller == ITEFILT_TTY && kbd_ite->key_repeat) {
911 		tout_pending = 1;
912 		last_char = c;
913 		callout_reset(&repeat_ch,
914 		    start_repeat_timeo * hz / 100, repeat_handler, NULL);
915 	} else if (!tout_pending && caller == ITEFILT_REPEATER &&
916 	    kbd_ite->key_repeat) {
917 		tout_pending = 1;
918 		last_char = c;
919 		callout_reset(&repeat_ch,
920 		    next_repeat_timeo * hz / 100, repeat_handler, NULL);
921 	}
922 	/* handle dead keys */
923 	if (key.mode & KBD_MODE_DEAD) {
924 		/* if entered twice, send accent itself */
925 		if (last_dead == (key.mode & KBD_MODE_ACCMASK))
926 			last_dead = 0;
927 		else {
928 			last_dead = key.mode & KBD_MODE_ACCMASK;
929 			splx(s);
930 			return;
931 		}
932 	}
933 	if (last_dead) {
934 		/* can't apply dead flag to string-keys */
935 		if (!(key.mode & KBD_MODE_STRING) && code >= '@' &&
936 		    code < 0x7f)
937 			code = acctable[KBD_MODE_ACCENT(last_dead)][code - '@'];
938 		last_dead = 0;
939 	}
940 	/* if not string, apply META and CTRL modifiers */
941 	if (!(key.mode & KBD_MODE_STRING)
942 	    && (!(key.mode & KBD_MODE_KPAD) ||
943 		(kbd_ite && !kbd_ite->keypad_appmode))) {
944 		if (key_mod & KBD_MOD_CTRL)
945 			code &= 0x1f;
946 		if (key_mod & KBD_MOD_META)
947 			code |= 0x80;
948 	} else if ((key.mode & KBD_MODE_KPAD) &&
949 	    (kbd_ite && kbd_ite->keypad_appmode)) {
950 		static char in[] = {
951 		    0x0f /* 0 */, 0x1d /* 1 */, 0x1e /* 2 */, 0x1f /* 3 */,
952 		    0x2d /* 4 */, 0x2e /* 5 */, 0x2f /* 6 */, 0x3d /* 7 */,
953 		    0x3e /* 8 */, 0x3f /* 9 */, 0x4a /* - */, 0x5e /* + */,
954 		    0x3c /* . */, 0x43 /* e */, 0x5a /* ( */, 0x5b /* ) */,
955 		    0x5c /* / */, 0x5d /* * */
956 		};
957 		static const char *out = "pqrstuvwxymlnMPQRS";
958 		char *cp = strchr(in, c);
959 
960 		/*
961 		 * keypad-appmode sends SS3 followed by the above
962 		 * translated character
963 		 */
964 		kbd_tty->t_linesw->l_rint(27, kbd_tty);
965 		kbd_tty->t_linesw->l_rint('O', kbd_tty);
966 		kbd_tty->t_linesw->l_rint(out[cp - in], kbd_tty);
967 		splx(s);
968 		return;
969 	} else {
970 		/* *NO* I don't like this.... */
971 		static u_char app_cursor[] =
972 		{
973 		    3, 27, 'O', 'A',
974 		    3, 27, 'O', 'B',
975 		    3, 27, 'O', 'C',
976 		    3, 27, 'O', 'D'};
977 
978 		str = kbdmap.strings + code;
979 		/*
980 		 * if this is a cursor key, AND it has the default
981 		 * keymap setting, AND we're in app-cursor mode, switch
982 		 * to the above table. This is *nasty* !
983 		 */
984 		if (c >= 0x4c && c <= 0x4f && kbd_ite->cursor_appmode
985 		    && !memcmp(str, "\x03\x1b[", 3) &&
986 		    strchr("ABCD", str[3]))
987 			str = app_cursor + 4 * (str[3] - 'A');
988 
989 		/*
990 		 * using a length-byte instead of 0-termination allows
991 		 * to embed \0 into strings, although this is not used
992 		 * in the default keymap
993 		 */
994 		for (i = *str++; i; i--)
995 			kbd_tty->t_linesw->l_rint(*str++, kbd_tty);
996 		splx(s);
997 		return;
998 	}
999 	kbd_tty->t_linesw->l_rint(code, kbd_tty);
1000 
1001 	splx(s);
1002 	return;
1003 }
1004 
1005 /* helper functions, makes the code below more readable */
1006 inline static void
1007 ite_sendstr(const char *str)
1008 {
1009 	struct tty *kbd_tty;
1010 
1011 	kbd_tty = kbd_ite->tp;
1012 	KDASSERT(kbd_tty);
1013 	while (*str)
1014 		kbd_tty->t_linesw->l_rint(*str++, kbd_tty);
1015 }
1016 
1017 static void
1018 alignment_display(struct ite_softc *ip)
1019 {
1020   int i, j;
1021 
1022   for (j = 0; j < ip->rows; j++)
1023     for (i = 0; i < ip->cols; i++)
1024       SUBR_PUTC(ip, 'E', j, i, ATTR_NOR);
1025   attrclr(ip, 0, 0, ip->rows, ip->cols);
1026   SUBR_CURSOR(ip, DRAW_CURSOR);
1027 }
1028 
1029 inline static void
1030 snap_cury(struct ite_softc *ip)
1031 {
1032   if (ip->inside_margins)
1033     {
1034       if (ip->cury < ip->top_margin)
1035 	ip->cury = ip->top_margin;
1036       if (ip->cury > ip->bottom_margin)
1037 	ip->cury = ip->bottom_margin;
1038     }
1039 }
1040 
1041 inline static void
1042 ite_dnchar(struct ite_softc *ip, int n)
1043 {
1044   n = min(n, ip->cols - ip->curx);
1045   if (n < ip->cols - ip->curx)
1046     {
1047       SUBR_SCROLL(ip, ip->cury, ip->curx + n, n, SCROLL_LEFT);
1048       attrmov(ip, ip->cury, ip->curx + n, ip->cury, ip->curx,
1049 	      1, ip->cols - ip->curx - n);
1050       attrclr(ip, ip->cury, ip->cols - n, 1, n);
1051     }
1052   while (n-- > 0)
1053     SUBR_PUTC(ip, ' ', ip->cury, ip->cols - n - 1, ATTR_NOR);
1054   SUBR_CURSOR(ip, DRAW_CURSOR);
1055 }
1056 
1057 inline static void
1058 ite_inchar(struct ite_softc *ip, int n)
1059 {
1060   n = min(n, ip->cols - ip->curx);
1061   if (n < ip->cols - ip->curx)
1062     {
1063       SUBR_SCROLL(ip, ip->cury, ip->curx, n, SCROLL_RIGHT);
1064       attrmov(ip, ip->cury, ip->curx, ip->cury, ip->curx + n,
1065 	      1, ip->cols - ip->curx - n);
1066       attrclr(ip, ip->cury, ip->curx, 1, n);
1067     }
1068   while (n--)
1069     SUBR_PUTC(ip, ' ', ip->cury, ip->curx + n, ATTR_NOR);
1070   SUBR_CURSOR(ip, DRAW_CURSOR);
1071 }
1072 
1073 inline static void
1074 ite_clrtoeol(struct ite_softc *ip)
1075 {
1076   int y = ip->cury, x = ip->curx;
1077   if (ip->cols - x > 0)
1078     {
1079       SUBR_CLEAR(ip, y, x, 1, ip->cols - x);
1080       attrclr(ip, y, x, 1, ip->cols - x);
1081       SUBR_CURSOR(ip, DRAW_CURSOR);
1082     }
1083 }
1084 
1085 inline static void
1086 ite_clrtobol(struct ite_softc *ip)
1087 {
1088   int y = ip->cury, x = min(ip->curx + 1, ip->cols);
1089   SUBR_CLEAR(ip, y, 0, 1, x);
1090   attrclr(ip, y, 0, 1, x);
1091   SUBR_CURSOR(ip, DRAW_CURSOR);
1092 }
1093 
1094 inline static void
1095 ite_clrline(struct ite_softc *ip)
1096 {
1097   int y = ip->cury;
1098   SUBR_CLEAR(ip, y, 0, 1, ip->cols);
1099   attrclr(ip, y, 0, 1, ip->cols);
1100   SUBR_CURSOR(ip, DRAW_CURSOR);
1101 }
1102 
1103 
1104 
1105 inline static void
1106 ite_clrtoeos(struct ite_softc *ip)
1107 {
1108   ite_clrtoeol(ip);
1109   if (ip->cury < ip->rows - 1)
1110     {
1111       SUBR_CLEAR(ip, ip->cury + 1, 0, ip->rows - 1 - ip->cury, ip->cols);
1112       attrclr(ip, ip->cury, 0, ip->rows - ip->cury, ip->cols);
1113       SUBR_CURSOR(ip, DRAW_CURSOR);
1114     }
1115 }
1116 
1117 inline static void
1118 ite_clrtobos(struct ite_softc *ip)
1119 {
1120   ite_clrtobol(ip);
1121   if (ip->cury > 0)
1122     {
1123       SUBR_CLEAR(ip, 0, 0, ip->cury, ip->cols);
1124       attrclr(ip, 0, 0, ip->cury, ip->cols);
1125       SUBR_CURSOR(ip, DRAW_CURSOR);
1126     }
1127 }
1128 
1129 inline static void
1130 ite_clrscreen(struct ite_softc *ip)
1131 {
1132   SUBR_CLEAR(ip, 0, 0, ip->rows, ip->cols);
1133   attrclr(ip, 0, 0, ip->rows, ip->cols);
1134   SUBR_CURSOR(ip, DRAW_CURSOR);
1135 }
1136 
1137 
1138 
1139 inline static void
1140 ite_dnline(struct ite_softc *ip, int n)
1141 {
1142   /* interesting.. if the cursor is outside the scrolling
1143      region, this command is simply ignored.. */
1144   if (ip->cury < ip->top_margin || ip->cury > ip->bottom_margin)
1145     return;
1146 
1147   n = min(n, ip->bottom_margin + 1 - ip->cury);
1148   if (n <= ip->bottom_margin - ip->cury)
1149     {
1150       SUBR_SCROLL(ip, ip->cury + n, 0, n, SCROLL_UP);
1151       attrmov(ip, ip->cury + n, 0, ip->cury, 0,
1152 	      ip->bottom_margin + 1 - ip->cury - n, ip->cols);
1153     }
1154   SUBR_CLEAR(ip, ip->bottom_margin - n + 1, 0, n, ip->cols);
1155   attrclr(ip, ip->bottom_margin - n + 1, 0, n, ip->cols);
1156   SUBR_CURSOR(ip, DRAW_CURSOR);
1157 }
1158 
1159 inline static void
1160 ite_inline(struct ite_softc *ip, int n)
1161 {
1162   /* interesting.. if the cursor is outside the scrolling
1163      region, this command is simply ignored.. */
1164   if (ip->cury < ip->top_margin || ip->cury > ip->bottom_margin)
1165     return;
1166 
1167   n = min(n, ip->bottom_margin + 1 - ip->cury);
1168   if (n <= ip->bottom_margin - ip->cury)
1169     {
1170       SUBR_SCROLL(ip, ip->cury, 0, n, SCROLL_DOWN);
1171       attrmov(ip, ip->cury, 0, ip->cury + n, 0,
1172 	      ip->bottom_margin + 1 - ip->cury - n, ip->cols);
1173     }
1174   SUBR_CLEAR(ip, ip->cury, 0, n, ip->cols);
1175   attrclr(ip, ip->cury, 0, n, ip->cols);
1176   SUBR_CURSOR(ip, DRAW_CURSOR);
1177 }
1178 
1179 inline static void
1180 ite_lf(struct ite_softc *ip)
1181 {
1182   ++ip->cury;
1183   if ((ip->cury == ip->bottom_margin+1) || (ip->cury == ip->rows))
1184     {
1185       ip->cury--;
1186       SUBR_SCROLL(ip, ip->top_margin + 1, 0, 1, SCROLL_UP);
1187       ite_clrline(ip);
1188     }
1189   SUBR_CURSOR(ip, MOVE_CURSOR);
1190   clr_attr(ip, ATTR_INV);
1191 }
1192 
1193 inline static void
1194 ite_crlf(struct ite_softc *ip)
1195 {
1196   ip->curx = 0;
1197   ite_lf (ip);
1198 }
1199 
1200 inline static void
1201 ite_cr(struct ite_softc *ip)
1202 {
1203   if (ip->curx)
1204     {
1205       ip->curx = 0;
1206       SUBR_CURSOR(ip, MOVE_CURSOR);
1207     }
1208 }
1209 
1210 inline static void
1211 ite_rlf(struct ite_softc *ip)
1212 {
1213   ip->cury--;
1214   if ((ip->cury < 0) || (ip->cury == ip->top_margin - 1))
1215     {
1216       ip->cury++;
1217       SUBR_SCROLL(ip, ip->top_margin, 0, 1, SCROLL_DOWN);
1218       ite_clrline(ip);
1219     }
1220   SUBR_CURSOR(ip, MOVE_CURSOR);
1221   clr_attr(ip, ATTR_INV);
1222 }
1223 
1224 inline static int
1225 atoi(const char *cp)
1226 {
1227   int n;
1228 
1229   for (n = 0; *cp && *cp >= '0' && *cp <= '9'; cp++)
1230     n = n * 10 + *cp - '0';
1231 
1232   return n;
1233 }
1234 
1235 inline static int
1236 ite_argnum(struct ite_softc *ip)
1237 {
1238   char ch;
1239   int n;
1240 
1241   /* convert argument string into number */
1242   if (ip->ap == ip->argbuf)
1243     return 1;
1244   ch = *ip->ap;
1245   *ip->ap = 0;
1246   n = atoi (ip->argbuf);
1247   *ip->ap = ch;
1248 
1249   return n;
1250 }
1251 
1252 inline static int
1253 ite_zargnum(struct ite_softc *ip)
1254 {
1255   char ch;
1256   int n;
1257 
1258   /* convert argument string into number */
1259   if (ip->ap == ip->argbuf)
1260     return 0;
1261   ch = *ip->ap;
1262   *ip->ap = 0;
1263   n = atoi (ip->argbuf);
1264   *ip->ap = ch;
1265 
1266   return n;	/* don't "n ? n : 1" here, <CSI>0m != <CSI>1m ! */
1267 }
1268 
1269 void
1270 ite_putstr(const char *s, int len, dev_t dev)
1271 {
1272 	struct ite_softc *ip;
1273 	int i;
1274 
1275 	ip = getitesp(dev);
1276 
1277 	/* XXX avoid problems */
1278 	if ((ip->flags & (ITE_ACTIVE|ITE_INGRF)) != ITE_ACTIVE)
1279 	  	return;
1280 
1281 	SUBR_CURSOR(ip, START_CURSOROPT);
1282 	for (i = 0; i < len; i++)
1283 		if (s[i])
1284 			iteputchar(s[i], ip);
1285 	SUBR_CURSOR(ip, END_CURSOROPT);
1286 }
1287 
1288 static void
1289 iteprecheckwrap(struct ite_softc *ip)
1290 {
1291 	if (ip->auto_wrap && ip->curx == ip->cols) {
1292 		ip->curx = 0;
1293 		clr_attr(ip, ATTR_INV);
1294 		if (++ip->cury >= ip->bottom_margin + 1) {
1295 			ip->cury = ip->bottom_margin;
1296 			SUBR_CURSOR(ip, MOVE_CURSOR);
1297 			SUBR_SCROLL(ip, ip->top_margin + 1, 0, 1, SCROLL_UP);
1298 			ite_clrtoeol(ip);
1299 		} else
1300 			SUBR_CURSOR(ip, MOVE_CURSOR);
1301 	}
1302 }
1303 
1304 static void
1305 itecheckwrap(struct ite_softc *ip)
1306 {
1307 #if 0
1308 	if (++ip->curx == ip->cols) {
1309 		if (ip->auto_wrap) {
1310 			ip->curx = 0;
1311 			clr_attr(ip, ATTR_INV);
1312 			if (++ip->cury >= ip->bottom_margin + 1) {
1313 				ip->cury = ip->bottom_margin;
1314 				SUBR_CURSOR(ip, MOVE_CURSOR);
1315 				SUBR_SCROLL(ip, ip->top_margin + 1, 0, 1, SCROLL_UP);
1316 				ite_clrtoeol(ip);
1317 				return;
1318 			}
1319 		} else
1320 			/* stay there if no autowrap.. */
1321 			ip->curx--;
1322 	}
1323 #else
1324 	if (ip->curx < ip->cols) {
1325 		ip->curx++;
1326 		SUBR_CURSOR(ip, MOVE_CURSOR);
1327 	}
1328 #endif
1329 }
1330 
1331 void
1332 iteputchar(register int c, struct ite_softc *ip)
1333 {
1334 	struct tty *kbd_tty;
1335 	int n, x, y;
1336 	char *cp;
1337 
1338 	if (kbd_ite == NULL)
1339 		kbd_tty = NULL;
1340 	else
1341 		kbd_tty = kbd_ite->tp;
1342 
1343 	if (ip->escape) {
1344 		switch (ip->escape) {
1345 		case ESC:
1346 			switch (c) {
1347 				/*
1348 				 * first 7bit equivalents for the
1349 				 * 8bit control characters
1350 				 */
1351 			case 'D':
1352 				c = IND;
1353 				ip->escape = 0;
1354 				break;
1355 				/*
1356 				 * and fall into the next
1357 				 * switch below (same for all `break')
1358 				 */
1359 			case 'E':
1360 				c = NEL;
1361 				ip->escape = 0;
1362 				break;
1363 			case 'H':
1364 				c = HTS;
1365 				ip->escape = 0;
1366 				break;
1367 			case 'M':
1368 				c = RI;
1369 				ip->escape = 0;
1370 				break;
1371 			case 'N':
1372 				c = SS2;
1373 				ip->escape = 0;
1374 				break;
1375 			case 'O':
1376 				c = SS3;
1377 				ip->escape = 0;
1378 				break;
1379 			case 'P':
1380 				c = DCS;
1381 				ip->escape = 0;
1382 				break;
1383 			case '[':
1384 				c = CSI;
1385 				ip->escape = 0;
1386 				break;
1387 			case '\\':
1388 				c = ST;
1389 				ip->escape = 0;
1390 				break;
1391 			case ']':
1392 				c = OSC;
1393 				ip->escape = 0;
1394 				break;
1395 			case '^':
1396 				c = PM;
1397 				ip->escape = 0;
1398 				break;
1399 			case '_':
1400 				c = APC;
1401 				ip->escape = 0;
1402 				break;
1403 				/* introduces 7/8bit control */
1404 			case ' ':
1405 				/* can be followed by either F or G */
1406 				ip->escape = ' ';
1407 				break;
1408 			/*
1409 			 * a lot of character set selections, not yet
1410 			 * used... 94-character sets:
1411 			 */
1412 			case '(':	/* G0 */
1413 			case ')':	/* G1 */
1414 				ip->escape = c;
1415 				return;
1416 			case '*':	/* G2 */
1417 			case '+':	/* G3 */
1418 			case 'B':	/* ASCII */
1419 			case 'A':	/* ISO latin 1 */
1420 			case '<':	/* user preferred suplemental */
1421 			case '0':	/* dec special graphics */
1422 			/*
1423 			 * 96-character sets:
1424 			 */
1425 			case '-':	/* G1 */
1426 			case '.':	/* G2 */
1427 			case '/':	/* G3 */
1428 			/*
1429 			 * national character sets:
1430 			 */
1431 			case '4':	/* dutch */
1432 			case '5':
1433 			case 'C':	/* finnish */
1434 			case 'R':	/* french */
1435 			case 'Q':	/* french canadian */
1436 			case 'K':	/* german */
1437 			case 'Y':	/* italian */
1438 			case '6':	/* norwegian/danish */
1439 				/*
1440 				 * note: %5 and %6 are not supported (two
1441 				 * chars..)
1442 				 */
1443 				ip->escape = 0;
1444 				/* just ignore for now */
1445 				return;
1446 			/*
1447 			 * locking shift modes (as you might guess, not
1448 			 * yet supported..)
1449 			 */
1450 			case '`':
1451 				ip->GR = ip->G1;
1452 				ip->escape = 0;
1453 				return;
1454 			case 'n':
1455 				ip->GL = ip->G2;
1456 				ip->escape = 0;
1457 				return;
1458 			case '}':
1459 				ip->GR = ip->G2;
1460 				ip->escape = 0;
1461 				return;
1462 			case 'o':
1463 				ip->GL = ip->G3;
1464 				ip->escape = 0;
1465 				return;
1466 			case '|':
1467 				ip->GR = ip->G3;
1468 				ip->escape = 0;
1469 				return;
1470 			case '#':
1471 				/* font width/height control */
1472 				ip->escape = '#';
1473 				return;
1474 			case 'c':
1475 				/* hard terminal reset .. */
1476 				ite_reset(ip);
1477 				SUBR_CURSOR(ip, MOVE_CURSOR);
1478 				ip->escape = 0;
1479 				return;
1480 			case '7':
1481 				ip->save_curx = ip->curx;
1482 				ip->save_cury = ip->cury;
1483 				ip->save_attribute = ip->attribute;
1484 				ip->escape = 0;
1485 				return;
1486 			case '8':
1487 				ip->curx = ip->save_curx;
1488 				ip->cury = ip->save_cury;
1489 				ip->attribute = ip->save_attribute;
1490 				SUBR_CURSOR(ip, MOVE_CURSOR);
1491 				ip->escape = 0;
1492 				return;
1493 			case '=':
1494 				ip->keypad_appmode = 1;
1495 				ip->escape = 0;
1496 				return;
1497 			case '>':
1498 				ip->keypad_appmode = 0;
1499 				ip->escape = 0;
1500 				return;
1501 			case 'Z':	/* request ID */
1502 				/* XXX not clean */
1503 				if (ip->emul_level == EMUL_VT100)
1504 					ite_sendstr("\033[?61;0c");
1505 				else
1506 					ite_sendstr("\033[?63;0c");
1507 				ip->escape = 0;
1508 				return;
1509 			default:
1510 				/*
1511 				 * default catch all for not recognized ESC
1512 				 * sequences
1513 				 */
1514 				ip->escape = 0;
1515 				return;
1516 			}
1517 			break;
1518 		case '(':
1519 		case ')':
1520 			ip->escape = 0;
1521 			return;
1522 		case ' ':
1523 			switch (c) {
1524 			case 'F':
1525 				ip->eightbit_C1 = 0;
1526 				ip->escape = 0;
1527 				return;
1528 			case 'G':
1529 				ip->eightbit_C1 = 1;
1530 				ip->escape = 0;
1531 				return;
1532 			default:
1533 				/* not supported */
1534 				ip->escape = 0;
1535 				return;
1536 			}
1537 			break;
1538 		case '#':
1539 			switch (c) {
1540 			case '5':
1541 				/* single height, single width */
1542 				ip->escape = 0;
1543 				return;
1544 			case '6':
1545 				/* double width, single height */
1546 				ip->escape = 0;
1547 				return;
1548 			case '3':
1549 				/* top half */
1550 				ip->escape = 0;
1551 				return;
1552 			case '4':
1553 				/* bottom half */
1554 				ip->escape = 0;
1555 				return;
1556 			case '8':
1557 				/* screen alignment pattern... */
1558 				alignment_display(ip);
1559 				ip->escape = 0;
1560 				return;
1561 			default:
1562 				ip->escape = 0;
1563 				return;
1564 			}
1565 			break;
1566 		case CSI:
1567 			/* the biggie... */
1568 			switch (c) {
1569 			case '0':
1570 			case '1':
1571 			case '2':
1572 			case '3':
1573 			case '4':
1574 			case '5':
1575 			case '6':
1576 			case '7':
1577 			case '8':
1578 			case '9':
1579 			case ';':
1580 			case '\"':
1581 			case '$':
1582 			case '>':
1583 				if (ip->ap < ip->argbuf + MAX_ARGSIZE)
1584 					*ip->ap++ = c;
1585 				return;
1586 			case BS:
1587 				/*
1588 				 * you wouldn't believe such perversion is
1589 				 * possible? it is.. BS is allowed in between
1590 				 * cursor sequences (at least), according to
1591 				 * vttest..
1592 				 */
1593 				if (--ip->curx < 0)
1594 					ip->curx = 0;
1595 				else
1596 					SUBR_CURSOR(ip, MOVE_CURSOR);
1597 				break;
1598 			case 'p':
1599 				*ip->ap = 0;
1600 				if (!strncmp(ip->argbuf, "61\"", 3))
1601 					ip->emul_level = EMUL_VT100;
1602 				else if (!strncmp(ip->argbuf, "63;1\"", 5)
1603 				    || !strncmp(ip->argbuf, "62;1\"", 5))
1604 					ip->emul_level = EMUL_VT300_7;
1605 				else
1606 					ip->emul_level = EMUL_VT300_8;
1607 				ip->escape = 0;
1608 				return;
1609 			case '?':
1610 				*ip->ap = 0;
1611 				ip->escape = '?';
1612 				ip->ap = ip->argbuf;
1613 				return;
1614 			case 'c':
1615 				*ip->ap = 0;
1616 				if (ip->argbuf[0] == '>') {
1617 					ite_sendstr("\033[>24;0;0;0c");
1618 				} else
1619 					switch (ite_zargnum(ip)) {
1620 					case 0:
1621 						/*
1622 						 * primary DA request, send
1623 						 * primary DA response
1624 						 */
1625 						if (ip->emul_level
1626 						    == EMUL_VT100)
1627 							ite_sendstr(
1628 							    "\033[?1;1c");
1629 						else
1630 							ite_sendstr(
1631 							    "\033[?63;1c");
1632 						break;
1633 					}
1634 				ip->escape = 0;
1635 				return;
1636 			case 'n':
1637 				switch (ite_zargnum(ip)) {
1638 				case 5:
1639 					/* no malfunction */
1640 					ite_sendstr("\033[0n");
1641 					break;
1642 				case 6:
1643 					/* cursor position report */
1644 					sprintf(ip->argbuf, "\033[%d;%dR",
1645 					    ip->cury + 1, ip->curx + 1);
1646 					ite_sendstr(ip->argbuf);
1647 					break;
1648 				}
1649 				ip->escape = 0;
1650 				return;
1651 			case 'x':
1652 				switch (ite_zargnum(ip)) {
1653 				case 0:
1654 					/* Fake some terminal parameters.  */
1655 					ite_sendstr("\033[2;1;1;112;112;1;0x");
1656 					break;
1657 				case 1:
1658 					ite_sendstr("\033[3;1;1;112;112;1;0x");
1659 					break;
1660 				}
1661 				ip->escape = 0;
1662 				return;
1663 			case 'g':
1664 				switch (ite_zargnum(ip)) {
1665 				case 0:
1666 					if (ip->curx < ip->cols)
1667 						ip->tabs[ip->curx] = 0;
1668 					break;
1669 				case 3:
1670 					for (n = 0; n < ip->cols; n++)
1671 						ip->tabs[n] = 0;
1672 					break;
1673 				}
1674 				ip->escape = 0;
1675 				return;
1676 			case 'h':
1677 			case 'l':
1678 				n = ite_zargnum(ip);
1679 				switch (n) {
1680 				case 4:
1681 					/* insert/replace mode */
1682 					ip->imode = (c == 'h');
1683 					break;
1684 				case 20:
1685 					ip->linefeed_newline = (c == 'h');
1686 					break;
1687 				}
1688 				ip->escape = 0;
1689 				return;
1690 			case 'M':
1691 				ite_dnline(ip, ite_argnum(ip));
1692 				ip->escape = 0;
1693 				return;
1694 			case 'L':
1695 				ite_inline(ip, ite_argnum(ip));
1696 				ip->escape = 0;
1697 				return;
1698 			case 'P':
1699 				ite_dnchar(ip, ite_argnum(ip));
1700 				ip->escape = 0;
1701 				return;
1702 			case '@':
1703 				ite_inchar(ip, ite_argnum(ip));
1704 				ip->escape = 0;
1705 				return;
1706 			case 'G':
1707 				/*
1708 				 * this one was *not* in my vt320 manual but in
1709 				 * a vt320 termcap entry.. who is right? It's
1710 				 * supposed to set the horizontal cursor
1711 				 * position.
1712 				 */
1713 				*ip->ap = 0;
1714 				x = atoi(ip->argbuf);
1715 				if (x)
1716 					x--;
1717 				ip->curx = min(x, ip->cols - 1);
1718 				ip->escape = 0;
1719 				SUBR_CURSOR(ip, MOVE_CURSOR);
1720 				clr_attr(ip, ATTR_INV);
1721 				return;
1722 			case 'd':
1723 				/*
1724 				 * same thing here, this one's for setting the
1725 				 * absolute vertical cursor position. Not
1726 				 * documented...
1727 				 */
1728 				*ip->ap = 0;
1729 				y = atoi(ip->argbuf);
1730 				if (y)
1731 					y--;
1732 				if (ip->inside_margins)
1733 					y += ip->top_margin;
1734 				ip->cury = min(y, ip->rows - 1);
1735 				ip->escape = 0;
1736 				snap_cury(ip);
1737 				SUBR_CURSOR(ip, MOVE_CURSOR);
1738 				clr_attr(ip, ATTR_INV);
1739 				return;
1740 			case 'H':
1741 			case 'f':
1742 				*ip->ap = 0;
1743 				y = atoi(ip->argbuf);
1744 				x = 0;
1745 				cp = strchr(ip->argbuf, ';');
1746 				if (cp)
1747 					x = atoi(cp + 1);
1748 				if (x)
1749 					x--;
1750 				if (y)
1751 					y--;
1752 				if (ip->inside_margins)
1753 					y += ip->top_margin;
1754 				ip->cury = min(y, ip->rows - 1);
1755 				ip->curx = min(x, ip->cols - 1);
1756 				ip->escape = 0;
1757 				snap_cury(ip);
1758 				SUBR_CURSOR(ip, MOVE_CURSOR);
1759 				clr_attr(ip, ATTR_INV);
1760 				return;
1761 			case 'A':
1762 				n = ite_argnum(ip);
1763 				n = ip->cury - (n ? n : 1);
1764 				if (n < 0)
1765 					n = 0;
1766 				if (ip->inside_margins)
1767 					n = max(ip->top_margin, n);
1768 				else if (n == ip->top_margin - 1)
1769 					/*
1770 					 * allow scrolling outside region, but
1771 					 * don't scroll out of active region
1772 					 * without explicit CUP
1773 					 */
1774 					n = ip->top_margin;
1775 				ip->cury = n;
1776 				ip->escape = 0;
1777 				SUBR_CURSOR(ip, MOVE_CURSOR);
1778 				clr_attr(ip, ATTR_INV);
1779 				return;
1780 			case 'B':
1781 				n = ite_argnum(ip);
1782 				n = ip->cury + (n ? n : 1);
1783 				n = min(ip->rows - 1, n);
1784 				if (ip->inside_margins)
1785 					n = min(ip->bottom_margin, n);
1786 				else if (n == ip->bottom_margin + 1)
1787 					/*
1788 					 * allow scrolling outside region, but
1789 					 * don't scroll out of active region
1790 					 * without explicit CUP
1791 					 */
1792 					n = ip->bottom_margin;
1793 				ip->cury = n;
1794 				ip->escape = 0;
1795 				SUBR_CURSOR(ip, MOVE_CURSOR);
1796 				clr_attr(ip, ATTR_INV);
1797 				return;
1798 			case 'C':
1799 				n = ite_argnum(ip);
1800 				n = n ? n : 1;
1801 				ip->curx = min(ip->curx + n, ip->cols - 1);
1802 				ip->escape = 0;
1803 				SUBR_CURSOR(ip, MOVE_CURSOR);
1804 				clr_attr(ip, ATTR_INV);
1805 				return;
1806 			case 'D':
1807 				n = ite_argnum(ip);
1808 				n = n ? n : 1;
1809 				n = ip->curx - n;
1810 				ip->curx = n >= 0 ? n : 0;
1811 				ip->escape = 0;
1812 				SUBR_CURSOR(ip, MOVE_CURSOR);
1813 				clr_attr(ip, ATTR_INV);
1814 				return;
1815 			case 'J':
1816 				*ip->ap = 0;
1817 				n = ite_zargnum(ip);
1818 				if (n == 0)
1819 					ite_clrtoeos(ip);
1820 				else if (n == 1)
1821 					ite_clrtobos(ip);
1822 				else if (n == 2)
1823 					ite_clrscreen(ip);
1824 				ip->escape = 0;
1825 				return;
1826 			case 'K':
1827 				n = ite_zargnum(ip);
1828 				if (n == 0)
1829 					ite_clrtoeol(ip);
1830 				else if (n == 1)
1831 					ite_clrtobol(ip);
1832 				else if (n == 2)
1833 					ite_clrline(ip);
1834 				ip->escape = 0;
1835 				return;
1836 			case 'X':
1837 				n = ite_argnum(ip) - 1;
1838 				n = min(n, ip->cols - 1 - ip->curx);
1839 				for (; n >= 0; n--) {
1840 					attrclr(ip, ip->cury, ip->curx + n, 1, 1);
1841 					SUBR_PUTC(ip, ' ', ip->cury, ip->curx + n, ATTR_NOR);
1842 				}
1843 				ip->escape = 0;
1844 				return;
1845 			case '}':
1846 			case '`':
1847 				/* status line control */
1848 				ip->escape = 0;
1849 				return;
1850 			case 'r':
1851 				*ip->ap = 0;
1852 				x = atoi(ip->argbuf);
1853 				x = x ? x : 1;
1854 				y = ip->rows;
1855 				cp = strchr(ip->argbuf, ';');
1856 				if (cp) {
1857 					y = atoi(cp + 1);
1858 					y = y ? y : ip->rows;
1859 				}
1860 				if (y - x < 2) {
1861 					/*
1862 					 * if illegal scrolling region, reset
1863 					 * to defaults
1864 					 */
1865 					x = 1;
1866 					y = ip->rows;
1867 				}
1868 				x--;
1869 				y--;
1870 				ip->top_margin = min(x, ip->rows - 1);
1871 				ip->bottom_margin = min(y, ip->rows - 1);
1872 				if (ip->inside_margins) {
1873 					ip->cury = ip->top_margin;
1874 					ip->curx = 0;
1875 					SUBR_CURSOR(ip, MOVE_CURSOR);
1876 				}
1877 				ip->escape = 0;
1878 				return;
1879 			case 'm':
1880 				/* big attribute setter/resetter */
1881 				{ char *_cp;
1882 				*ip->ap = 0;
1883 				/* kludge to make CSIm work (== CSI0m) */
1884 				if (ip->ap == ip->argbuf)
1885 					ip->ap++;
1886 				for (_cp = ip->argbuf; _cp < ip->ap;) {
1887 					switch (*_cp) {
1888 					case 0:
1889 					case '0':
1890 						clr_attr(ip, ATTR_ALL);
1891 						_cp++;
1892 						break;
1893 
1894 					case '1':
1895 						set_attr(ip, ATTR_BOLD);
1896 						_cp++;
1897 						break;
1898 
1899 					case '2':
1900 						switch (_cp[1]) {
1901 						case '2':
1902 							clr_attr(ip, ATTR_BOLD);
1903 							_cp += 2;
1904 							break;
1905 
1906 						case '4':
1907 							clr_attr(ip, ATTR_UL);
1908 							_cp += 2;
1909 							break;
1910 
1911 						case '5':
1912 							clr_attr(ip, ATTR_BLINK);
1913 							_cp += 2;
1914 							break;
1915 
1916 						case '7':
1917 							clr_attr(ip, ATTR_INV);
1918 							_cp += 2;
1919 							break;
1920 
1921 						default:
1922 							_cp++;
1923 							break;
1924 						}
1925 						break;
1926 
1927 					case '4':
1928 						set_attr(ip, ATTR_UL);
1929 						_cp++;
1930 						break;
1931 
1932 					case '5':
1933 						set_attr(ip, ATTR_BLINK);
1934 						_cp++;
1935 						break;
1936 
1937 					case '7':
1938 						set_attr(ip, ATTR_INV);
1939 						_cp++;
1940 						break;
1941 
1942 					default:
1943 						_cp++;
1944 						break;
1945 					}
1946 				}
1947 				ip->escape = 0;
1948 				return; }
1949 			case 'u':
1950 				/* DECRQTSR */
1951 				ite_sendstr("\033P\033\\");
1952 				ip->escape = 0;
1953 				return;
1954 			default:
1955 				ip->escape = 0;
1956 				return;
1957 			}
1958 			break;
1959 		case '?':	/* CSI ? */
1960 			switch (c) {
1961 			case '0':
1962 			case '1':
1963 			case '2':
1964 			case '3':
1965 			case '4':
1966 			case '5':
1967 			case '6':
1968 			case '7':
1969 			case '8':
1970 			case '9':
1971 			case ';':
1972 			case '\"':
1973 			case '$':
1974 				/*
1975 				 * Don't fill the last character;
1976 				 * it's needed.
1977 				 * XXX yeah, where ??
1978 				 */
1979 				if (ip->ap < ip->argbuf + MAX_ARGSIZE - 1)
1980 					*ip->ap++ = c;
1981 				return;
1982 			case 'n':
1983 				*ip->ap = 0;
1984 				if (ip->ap == &ip->argbuf[2]) {
1985 					if (!strncmp(ip->argbuf, "15", 2))
1986 						/* printer status: no printer */
1987 						ite_sendstr("\033[13n");
1988 
1989 					else if (!strncmp(ip->argbuf, "25", 2))
1990 						/* udk status */
1991 						ite_sendstr("\033[20n");
1992 
1993 					else if (!strncmp(ip->argbuf, "26", 2))
1994 						/* keyboard dialect: US */
1995 						ite_sendstr("\033[27;1n");
1996 				}
1997 				ip->escape = 0;
1998 				return;
1999 			case 'h':
2000 			case 'l':
2001 				n = ite_zargnum(ip);
2002 				switch (n) {
2003 				case 1:
2004 					ip->cursor_appmode = (c == 'h');
2005 					break;
2006 				case 3:
2007 					/* 132/80 columns (132 == 'h') */
2008 					break;
2009 				case 4:	/* smooth scroll */
2010 					break;
2011 				case 5:
2012 					/*
2013 					 * light background (=='h') /dark
2014 					 * background(=='l')
2015 					 */
2016 					break;
2017 				case 6:	/* origin mode */
2018 					ip->inside_margins = (c == 'h');
2019 					ip->curx = 0;
2020 					ip->cury = ip->inside_margins ?
2021 					    ip->top_margin : 0;
2022 					SUBR_CURSOR(ip, MOVE_CURSOR);
2023 					break;
2024 				case 7:	/* auto wraparound */
2025 					ip->auto_wrap = (c == 'h');
2026 					break;
2027 				case 8:	/* keyboard repeat */
2028 					ip->key_repeat = (c == 'h');
2029 					break;
2030 				case 20:	/* newline mode */
2031 					ip->linefeed_newline = (c == 'h');
2032 					break;
2033 				case 25:	/* cursor on/off */
2034 					SUBR_CURSOR(ip, (c == 'h') ?
2035 					    DRAW_CURSOR : ERASE_CURSOR);
2036 					break;
2037 				}
2038 				ip->escape = 0;
2039 				return;
2040 			default:
2041 				ip->escape = 0;
2042 				return;
2043 			}
2044 			break;
2045 		default:
2046 			ip->escape = 0;
2047 			return;
2048 		}
2049 	}
2050 	switch (c) {
2051 	case VT:		/* VT is treated like LF */
2052 	case FF:		/* so is FF */
2053 	case LF:
2054 		/*
2055 		 * cr->crlf distinction is done here, on output, not on input!
2056 		 */
2057 		if (ip->linefeed_newline)
2058 			ite_crlf(ip);
2059 		else
2060 			ite_lf(ip);
2061 		break;
2062 	case CR:
2063 		ite_cr(ip);
2064 		break;
2065 	case BS:
2066 		if (--ip->curx < 0)
2067 			ip->curx = 0;
2068 		else
2069 			SUBR_CURSOR(ip, MOVE_CURSOR);
2070 		break;
2071 	case HT:
2072 		for (n = ip->curx + 1; n < ip->cols; n++) {
2073 			if (ip->tabs[n]) {
2074 				ip->curx = n;
2075 				SUBR_CURSOR(ip, MOVE_CURSOR);
2076 				break;
2077 			}
2078 		}
2079 		break;
2080 	case BEL:
2081 		if (kbd_tty && kbd_ite && kbd_ite->tp == kbd_tty
2082 #ifdef DRACO
2083 		    && !is_draco()
2084 #endif
2085 		    )
2086 			ite_bell();
2087 		break;
2088 	case SO:
2089 		ip->GL = ip->G1;
2090 		break;
2091 	case SI:
2092 		ip->GL = ip->G0;
2093 		break;
2094 	case ENQ:
2095 		/* send answer-back message !! */
2096 		break;
2097 	case CAN:
2098 		ip->escape = 0;	/* cancel any escape sequence in progress */
2099 		break;
2100 	case SUB:
2101 		ip->escape = 0;	/* dito, but see below */
2102 		/* should also display a reverse question mark!! */
2103 		break;
2104 	case ESC:
2105 		ip->escape = ESC;
2106 		break;
2107 	/*
2108 	 * now it gets weird.. 8bit control sequences..
2109 	 */
2110 	case IND:
2111 		/* index: move cursor down, scroll */
2112 		ite_lf(ip);
2113 		break;
2114 	case NEL:
2115 		/* next line. next line, first pos. */
2116 		ite_crlf(ip);
2117 		break;
2118 	case HTS:
2119 		/* set horizontal tab */
2120 		if (ip->curx < ip->cols)
2121 			ip->tabs[ip->curx] = 1;
2122 		break;
2123 	case RI:
2124 		/* reverse index */
2125 		ite_rlf(ip);
2126 		break;
2127 	case SS2:
2128 		/* go into G2 for one character */
2129 		/* not yet supported */
2130 		break;
2131 	case SS3:
2132 		/* go into G3 for one character */
2133 		break;
2134 	case DCS:
2135 		/* device control string introducer */
2136 		ip->escape = DCS;
2137 		ip->ap = ip->argbuf;
2138 		break;
2139 	case CSI:
2140 		/* control sequence introducer */
2141 		ip->escape = CSI;
2142 		ip->ap = ip->argbuf;
2143 		break;
2144 	case ST:
2145 		/* string terminator */
2146 		/* ignore, if not used as terminator */
2147 		break;
2148 	case OSC:
2149 		/*
2150 		 * introduces OS command. Ignore everything
2151 		 * upto ST
2152 		 */
2153 		ip->escape = OSC;
2154 		break;
2155 	case PM:
2156 		/* privacy message, ignore everything upto ST */
2157 		ip->escape = PM;
2158 		break;
2159 	case APC:
2160 		/*
2161 		 * application program command, ignore * everything upto ST
2162 		 */
2163 		ip->escape = APC;
2164 		break;
2165 	default:
2166 		if ((c & 0x7f) < ' ' || c == DEL)
2167 			break;
2168 		if (ip->imode)
2169 			ite_inchar(ip, 1);
2170 		iteprecheckwrap(ip);
2171 #ifdef DO_WEIRD_ATTRIBUTES
2172 		if ((ip->attribute & ATTR_INV) || attrtest(ip, ATTR_INV)) {
2173 			attrset(ip, ATTR_INV);
2174 			SUBR_PUTC(ip, c, ip->cury, ip->curx, ATTR_INV);
2175 		} else
2176 			SUBR_PUTC(ip, c, ip->cury, ip->curx, ATTR_NOR);
2177 #else
2178 		SUBR_PUTC(ip, c, ip->cury, ip->curx, ip->attribute);
2179 #endif
2180 		SUBR_CURSOR(ip, DRAW_CURSOR);
2181 		itecheckwrap(ip);
2182 		break;
2183 	}
2184 }
2185 
2186