xref: /freebsd/sys/dev/syscons/scterm-teken.c (revision 70e0bbedef95258a4dadc996d641a9bebd3f107d)
1 /*-
2  * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
3  * All rights reserved.
4  *
5  * Copyright (c) 2008-2009 Ed Schouten <ed@FreeBSD.org>
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer as
13  *    the first lines of this file unmodified.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28  */
29 
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
32 
33 #include "opt_syscons.h"
34 #include "opt_teken.h"
35 
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/kernel.h>
39 #include <sys/module.h>
40 #include <sys/consio.h>
41 #include <sys/kbio.h>
42 
43 #if defined(__sparc64__) || defined(__powerpc__)
44 #include <machine/sc_machdep.h>
45 #else
46 #include <machine/pc/display.h>
47 #endif
48 
49 #include <dev/syscons/syscons.h>
50 
51 #include <teken/teken.h>
52 
53 static void scteken_revattr(unsigned char, teken_attr_t *);
54 static unsigned int scteken_attr(const teken_attr_t *);
55 
56 static sc_term_init_t		scteken_init;
57 static sc_term_term_t		scteken_term;
58 static sc_term_puts_t		scteken_puts;
59 static sc_term_ioctl_t		scteken_ioctl;
60 static sc_term_default_attr_t	scteken_default_attr;
61 static sc_term_clear_t		scteken_clear;
62 static sc_term_input_t		scteken_input;
63 static sc_term_fkeystr_t	scteken_fkeystr;
64 static void			scteken_nop(void);
65 
66 typedef struct {
67 	teken_t		ts_teken;
68 	int		ts_busy;
69 } teken_stat;
70 
71 static teken_stat	reserved_teken_stat;
72 
73 static sc_term_sw_t sc_term_scteken = {
74 	{ NULL, NULL },
75 	"scteken",			/* emulator name */
76 	"teken terminal",		/* description */
77 	"*",				/* matching renderer */
78 	sizeof(teken_stat),		/* softc size */
79 	0,
80 	scteken_init,
81 	scteken_term,
82 	scteken_puts,
83 	scteken_ioctl,
84 	(sc_term_reset_t *)scteken_nop,
85 	scteken_default_attr,
86 	scteken_clear,
87 	(sc_term_notify_t *)scteken_nop,
88 	scteken_input,
89 	scteken_fkeystr,
90 };
91 
92 SCTERM_MODULE(scteken, sc_term_scteken);
93 
94 static tf_bell_t	scteken_bell;
95 static tf_cursor_t	scteken_cursor;
96 static tf_putchar_t	scteken_putchar;
97 static tf_fill_t	scteken_fill;
98 static tf_copy_t	scteken_copy;
99 static tf_param_t	scteken_param;
100 static tf_respond_t	scteken_respond;
101 
102 static const teken_funcs_t scteken_funcs = {
103 	.tf_bell	= scteken_bell,
104 	.tf_cursor	= scteken_cursor,
105 	.tf_putchar	= scteken_putchar,
106 	.tf_fill	= scteken_fill,
107 	.tf_copy	= scteken_copy,
108 	.tf_param	= scteken_param,
109 	.tf_respond	= scteken_respond,
110 };
111 
112 static int
113 scteken_init(scr_stat *scp, void **softc, int code)
114 {
115 	teken_stat *ts;
116 	teken_pos_t tp;
117 
118 	if (*softc == NULL) {
119 		if (reserved_teken_stat.ts_busy)
120 			return (EINVAL);
121 		*softc = &reserved_teken_stat;
122 	}
123 	ts = *softc;
124 
125 	switch (code) {
126 	case SC_TE_COLD_INIT:
127 		++sc_term_scteken.te_refcount;
128 		ts->ts_busy = 1;
129 		/* FALLTHROUGH */
130 	case SC_TE_WARM_INIT:
131 		teken_init(&ts->ts_teken, &scteken_funcs, scp);
132 #ifndef TEKEN_UTF8
133 		teken_set_8bit(&ts->ts_teken);
134 #endif /* !TEKEN_UTF8 */
135 #ifdef TEKEN_CONS25
136 		teken_set_cons25(&ts->ts_teken);
137 #endif /* TEKEN_CONS25 */
138 
139 		tp.tp_row = scp->ysize;
140 		tp.tp_col = scp->xsize;
141 		teken_set_winsize(&ts->ts_teken, &tp);
142 
143 		if (scp->cursor_pos < scp->ysize * scp->xsize) {
144 			/* Valid old cursor position. */
145 			tp.tp_row = scp->cursor_pos / scp->xsize;
146 			tp.tp_col = scp->cursor_pos % scp->xsize;
147 			teken_set_cursor(&ts->ts_teken, &tp);
148 		}
149 		break;
150 	}
151 
152 	return (0);
153 }
154 
155 static int
156 scteken_term(scr_stat *scp, void **softc)
157 {
158 
159 	if (*softc == &reserved_teken_stat) {
160 		*softc = NULL;
161 		reserved_teken_stat.ts_busy = 0;
162 	}
163 	--sc_term_scteken.te_refcount;
164 
165 	return (0);
166 }
167 
168 static void
169 scteken_puts(scr_stat *scp, u_char *buf, int len, int kernel)
170 {
171 	teken_stat *ts = scp->ts;
172 	teken_attr_t backup, kattr;
173 
174 	scp->sc->write_in_progress++;
175 	if (kernel) {
176 		/* Use special colors for kernel messages. */
177 		backup = *teken_get_curattr(&ts->ts_teken);
178 		scteken_revattr(SC_KERNEL_CONS_ATTR, &kattr);
179 		teken_set_curattr(&ts->ts_teken, &kattr);
180 		teken_input(&ts->ts_teken, buf, len);
181 		teken_set_curattr(&ts->ts_teken, &backup);
182 	} else {
183 		/* Print user messages with regular colors. */
184 		teken_input(&ts->ts_teken, buf, len);
185 	}
186 	scp->sc->write_in_progress--;
187 }
188 
189 static int
190 scteken_ioctl(scr_stat *scp, struct tty *tp, u_long cmd, caddr_t data,
191 	     struct thread *td)
192 {
193 	teken_stat *ts = scp->ts;
194 	vid_info_t *vi;
195 	unsigned int attr;
196 
197 	switch (cmd) {
198 	case GIO_ATTR:      	/* get current attributes */
199 		*(int*)data =
200 		    scteken_attr(teken_get_curattr(&ts->ts_teken));
201 		return (0);
202 	case CONS_GETINFO:  	/* get current (virtual) console info */
203 		vi = (vid_info_t *)data;
204 		if (vi->size != sizeof(struct vid_info))
205 			return EINVAL;
206 
207 		attr = scteken_attr(teken_get_defattr(&ts->ts_teken));
208 		vi->mv_norm.fore = attr & 0x0f;
209 		vi->mv_norm.back = (attr >> 4) & 0x0f;
210 		vi->mv_rev.fore = vi->mv_norm.back;
211 		vi->mv_rev.back = vi->mv_norm.fore;
212 		/*
213 		 * The other fields are filled by the upper routine. XXX
214 		 */
215 		return (ENOIOCTL);
216 	}
217 
218 	return (ENOIOCTL);
219 }
220 
221 static void
222 scteken_default_attr(scr_stat *scp, int color, int rev_color)
223 {
224 	teken_stat *ts = scp->ts;
225 	teken_attr_t ta;
226 
227 	scteken_revattr(color, &ta);
228 	teken_set_defattr(&ts->ts_teken, &ta);
229 }
230 
231 static void
232 scteken_clear(scr_stat *scp)
233 {
234 
235 	sc_move_cursor(scp, 0, 0);
236 	sc_vtb_clear(&scp->vtb, scp->sc->scr_map[0x20], SC_NORM_ATTR << 8);
237 	mark_all(scp);
238 }
239 
240 static int
241 scteken_input(scr_stat *scp, int c, struct tty *tp)
242 {
243 
244 	return FALSE;
245 }
246 
247 static const char *
248 scteken_fkeystr(scr_stat *scp, int c)
249 {
250 	teken_stat *ts = scp->ts;
251 	unsigned int k;
252 
253 	switch (c) {
254 	case FKEY | F(1):  case FKEY | F(2):  case FKEY | F(3):
255 	case FKEY | F(4):  case FKEY | F(5):  case FKEY | F(6):
256 	case FKEY | F(7):  case FKEY | F(8):  case FKEY | F(9):
257 	case FKEY | F(10): case FKEY | F(11): case FKEY | F(12):
258 		k = TKEY_F1 + c - (FKEY | F(1));
259 		break;
260 	case FKEY | F(49):
261 		k = TKEY_HOME;
262 		break;
263 	case FKEY | F(50):
264 		k = TKEY_UP;
265 		break;
266 	case FKEY | F(51):
267 		k = TKEY_PAGE_UP;
268 		break;
269 	case FKEY | F(53):
270 		k = TKEY_LEFT;
271 		break;
272 	case FKEY | F(55):
273 		k = TKEY_RIGHT;
274 		break;
275 	case FKEY | F(57):
276 		k = TKEY_END;
277 		break;
278 	case FKEY | F(58):
279 		k = TKEY_DOWN;
280 		break;
281 	case FKEY | F(59):
282 		k = TKEY_PAGE_DOWN;
283 		break;
284 	case FKEY | F(60):
285 		k = TKEY_INSERT;
286 		break;
287 	case FKEY | F(61):
288 		k = TKEY_DELETE;
289 		break;
290 	default:
291 		return (NULL);
292 	}
293 
294 	return (teken_get_sequence(&ts->ts_teken, k));
295 }
296 
297 static void
298 scteken_nop(void)
299 {
300 
301 }
302 
303 /*
304  * libteken routines.
305  */
306 
307 static const unsigned char fgcolors_normal[TC_NCOLORS] = {
308 	FG_BLACK,     FG_RED,          FG_GREEN,      FG_BROWN,
309 	FG_BLUE,      FG_MAGENTA,      FG_CYAN,       FG_LIGHTGREY,
310 };
311 
312 static const unsigned char fgcolors_bold[TC_NCOLORS] = {
313 	FG_DARKGREY,  FG_LIGHTRED,     FG_LIGHTGREEN, FG_YELLOW,
314 	FG_LIGHTBLUE, FG_LIGHTMAGENTA, FG_LIGHTCYAN,  FG_WHITE,
315 };
316 
317 static const unsigned char bgcolors[TC_NCOLORS] = {
318 	BG_BLACK,     BG_RED,          BG_GREEN,      BG_BROWN,
319 	BG_BLUE,      BG_MAGENTA,      BG_CYAN,       BG_LIGHTGREY,
320 };
321 
322 static void
323 scteken_revattr(unsigned char color, teken_attr_t *a)
324 {
325 	teken_color_t fg, bg;
326 
327 	/*
328 	 * XXX: Reverse conversion of syscons to teken attributes. Not
329 	 * realiable. Maybe we should turn it into a 1:1 mapping one of
330 	 * these days?
331 	 */
332 
333 	a->ta_format = 0;
334 	a->ta_fgcolor = TC_WHITE;
335 	a->ta_bgcolor = TC_BLACK;
336 
337 #ifdef FG_BLINK
338 	if (color & FG_BLINK) {
339 		a->ta_format |= TF_BLINK;
340 		color &= ~FG_BLINK;
341 	}
342 #endif /* FG_BLINK */
343 
344 	for (fg = 0; fg < TC_NCOLORS; fg++) {
345 		for (bg = 0; bg < TC_NCOLORS; bg++) {
346 			if ((fgcolors_normal[fg] | bgcolors[bg]) == color) {
347 				a->ta_fgcolor = fg;
348 				a->ta_bgcolor = bg;
349 				return;
350 			}
351 
352 			if ((fgcolors_bold[fg] | bgcolors[bg]) == color) {
353 				a->ta_fgcolor = fg;
354 				a->ta_bgcolor = bg;
355 				a->ta_format |= TF_BOLD;
356 				return;
357 			}
358 		}
359 	}
360 }
361 
362 static unsigned int
363 scteken_attr(const teken_attr_t *a)
364 {
365 	unsigned int attr = 0;
366 	teken_color_t fg, bg;
367 
368 	if (a->ta_format & TF_REVERSE) {
369 		fg = teken_256to8(a->ta_bgcolor);
370 		bg = teken_256to8(a->ta_fgcolor);
371 	} else {
372 		fg = teken_256to8(a->ta_fgcolor);
373 		bg = teken_256to8(a->ta_bgcolor);
374 	}
375 	if (a->ta_format & TF_BOLD)
376 		attr |= fgcolors_bold[fg];
377 	else
378 		attr |= fgcolors_normal[fg];
379 	attr |= bgcolors[bg];
380 
381 #ifdef FG_UNDERLINE
382 	if (a->ta_format & TF_UNDERLINE)
383 		attr |= FG_UNDERLINE;
384 #endif /* FG_UNDERLINE */
385 #ifdef FG_BLINK
386 	if (a->ta_format & TF_BLINK)
387 		attr |= FG_BLINK;
388 #endif /* FG_BLINK */
389 
390 	return (attr);
391 }
392 
393 static void
394 scteken_bell(void *arg)
395 {
396 	scr_stat *scp = arg;
397 
398 	sc_bell(scp, scp->bell_pitch, scp->bell_duration);
399 }
400 
401 static void
402 scteken_cursor(void *arg, const teken_pos_t *p)
403 {
404 	scr_stat *scp = arg;
405 
406 	sc_move_cursor(scp, p->tp_col, p->tp_row);
407 }
408 
409 #ifdef TEKEN_UTF8
410 struct unicp437 {
411 	uint16_t	unicode_base;
412 	uint8_t		cp437_base;
413 	uint8_t		length;
414 };
415 
416 static const struct unicp437 cp437table[] = {
417 	{ 0x0020, 0x20, 0x5e }, { 0x00a0, 0x20, 0x00 },
418 	{ 0x00a1, 0xad, 0x00 }, { 0x00a2, 0x9b, 0x00 },
419 	{ 0x00a3, 0x9c, 0x00 }, { 0x00a5, 0x9d, 0x00 },
420 	{ 0x00a7, 0x15, 0x00 }, { 0x00aa, 0xa6, 0x00 },
421 	{ 0x00ab, 0xae, 0x00 }, { 0x00ac, 0xaa, 0x00 },
422 	{ 0x00b0, 0xf8, 0x00 }, { 0x00b1, 0xf1, 0x00 },
423 	{ 0x00b2, 0xfd, 0x00 }, { 0x00b5, 0xe6, 0x00 },
424 	{ 0x00b6, 0x14, 0x00 }, { 0x00b7, 0xfa, 0x00 },
425 	{ 0x00ba, 0xa7, 0x00 }, { 0x00bb, 0xaf, 0x00 },
426 	{ 0x00bc, 0xac, 0x00 }, { 0x00bd, 0xab, 0x00 },
427 	{ 0x00bf, 0xa8, 0x00 }, { 0x00c0, 0x41, 0x00 },
428 	{ 0x00c1, 0x41, 0x00 }, { 0x00c2, 0x41, 0x00 },
429 	{ 0x00c4, 0x8e, 0x01 }, { 0x00c6, 0x92, 0x00 },
430 	{ 0x00c7, 0x80, 0x00 }, { 0x00c8, 0x45, 0x00 },
431 	{ 0x00c9, 0x90, 0x00 }, { 0x00ca, 0x45, 0x00 },
432 	{ 0x00cb, 0x45, 0x00 }, { 0x00cc, 0x49, 0x00 },
433 	{ 0x00cd, 0x49, 0x00 }, { 0x00ce, 0x49, 0x00 },
434 	{ 0x00cf, 0x49, 0x00 }, { 0x00d1, 0xa5, 0x00 },
435 	{ 0x00d2, 0x4f, 0x00 }, { 0x00d3, 0x4f, 0x00 },
436 	{ 0x00d4, 0x4f, 0x00 }, { 0x00d6, 0x99, 0x00 },
437 	{ 0x00d9, 0x55, 0x00 }, { 0x00da, 0x55, 0x00 },
438 	{ 0x00db, 0x55, 0x00 }, { 0x00dc, 0x9a, 0x00 },
439 	{ 0x00df, 0xe1, 0x00 }, { 0x00e0, 0x85, 0x00 },
440 	{ 0x00e1, 0xa0, 0x00 }, { 0x00e2, 0x83, 0x00 },
441 	{ 0x00e4, 0x84, 0x00 }, { 0x00e5, 0x86, 0x00 },
442 	{ 0x00e6, 0x91, 0x00 }, { 0x00e7, 0x87, 0x00 },
443 	{ 0x00e8, 0x8a, 0x00 }, { 0x00e9, 0x82, 0x00 },
444 	{ 0x00ea, 0x88, 0x01 }, { 0x00ec, 0x8d, 0x00 },
445 	{ 0x00ed, 0xa1, 0x00 }, { 0x00ee, 0x8c, 0x00 },
446 	{ 0x00ef, 0x8b, 0x00 }, { 0x00f0, 0xeb, 0x00 },
447 	{ 0x00f1, 0xa4, 0x00 }, { 0x00f2, 0x95, 0x00 },
448 	{ 0x00f3, 0xa2, 0x00 }, { 0x00f4, 0x93, 0x00 },
449 	{ 0x00f6, 0x94, 0x00 }, { 0x00f7, 0xf6, 0x00 },
450 	{ 0x00f8, 0xed, 0x00 }, { 0x00f9, 0x97, 0x00 },
451 	{ 0x00fa, 0xa3, 0x00 }, { 0x00fb, 0x96, 0x00 },
452 	{ 0x00fc, 0x81, 0x00 }, { 0x00ff, 0x98, 0x00 },
453 	{ 0x013f, 0x4c, 0x00 }, { 0x0140, 0x6c, 0x00 },
454 	{ 0x0192, 0x9f, 0x00 }, { 0x0393, 0xe2, 0x00 },
455 	{ 0x0398, 0xe9, 0x00 }, { 0x03a3, 0xe4, 0x00 },
456 	{ 0x03a6, 0xe8, 0x00 }, { 0x03a9, 0xea, 0x00 },
457 	{ 0x03b1, 0xe0, 0x01 }, { 0x03b4, 0xeb, 0x00 },
458 	{ 0x03b5, 0xee, 0x00 }, { 0x03bc, 0xe6, 0x00 },
459 	{ 0x03c0, 0xe3, 0x00 }, { 0x03c3, 0xe5, 0x00 },
460 	{ 0x03c4, 0xe7, 0x00 }, { 0x03c6, 0xed, 0x00 },
461 	{ 0x03d5, 0xed, 0x00 }, { 0x2010, 0x2d, 0x00 },
462 	{ 0x2014, 0x2d, 0x00 }, { 0x2018, 0x60, 0x00 },
463 	{ 0x2019, 0x27, 0x00 }, { 0x201c, 0x22, 0x00 },
464 	{ 0x201d, 0x22, 0x00 }, { 0x2022, 0x07, 0x00 },
465 	{ 0x203c, 0x13, 0x00 }, { 0x207f, 0xfc, 0x00 },
466 	{ 0x20a7, 0x9e, 0x00 }, { 0x20ac, 0xee, 0x00 },
467 	{ 0x2126, 0xea, 0x00 }, { 0x2190, 0x1b, 0x00 },
468 	{ 0x2191, 0x18, 0x00 }, { 0x2192, 0x1a, 0x00 },
469 	{ 0x2193, 0x19, 0x00 }, { 0x2194, 0x1d, 0x00 },
470 	{ 0x2195, 0x12, 0x00 }, { 0x21a8, 0x17, 0x00 },
471 	{ 0x2202, 0xeb, 0x00 }, { 0x2208, 0xee, 0x00 },
472 	{ 0x2211, 0xe4, 0x00 }, { 0x2212, 0x2d, 0x00 },
473 	{ 0x2219, 0xf9, 0x00 }, { 0x221a, 0xfb, 0x00 },
474 	{ 0x221e, 0xec, 0x00 }, { 0x221f, 0x1c, 0x00 },
475 	{ 0x2229, 0xef, 0x00 }, { 0x2248, 0xf7, 0x00 },
476 	{ 0x2261, 0xf0, 0x00 }, { 0x2264, 0xf3, 0x00 },
477 	{ 0x2265, 0xf2, 0x00 }, { 0x2302, 0x7f, 0x00 },
478 	{ 0x2310, 0xa9, 0x00 }, { 0x2320, 0xf4, 0x00 },
479 	{ 0x2321, 0xf5, 0x00 }, { 0x2500, 0xc4, 0x00 },
480 	{ 0x2502, 0xb3, 0x00 }, { 0x250c, 0xda, 0x00 },
481 	{ 0x2510, 0xbf, 0x00 }, { 0x2514, 0xc0, 0x00 },
482 	{ 0x2518, 0xd9, 0x00 }, { 0x251c, 0xc3, 0x00 },
483 	{ 0x2524, 0xb4, 0x00 }, { 0x252c, 0xc2, 0x00 },
484 	{ 0x2534, 0xc1, 0x00 }, { 0x253c, 0xc5, 0x00 },
485 	{ 0x2550, 0xcd, 0x00 }, { 0x2551, 0xba, 0x00 },
486 	{ 0x2552, 0xd5, 0x00 }, { 0x2553, 0xd6, 0x00 },
487 	{ 0x2554, 0xc9, 0x00 }, { 0x2555, 0xb8, 0x00 },
488 	{ 0x2556, 0xb7, 0x00 }, { 0x2557, 0xbb, 0x00 },
489 	{ 0x2558, 0xd4, 0x00 }, { 0x2559, 0xd3, 0x00 },
490 	{ 0x255a, 0xc8, 0x00 }, { 0x255b, 0xbe, 0x00 },
491 	{ 0x255c, 0xbd, 0x00 }, { 0x255d, 0xbc, 0x00 },
492 	{ 0x255e, 0xc6, 0x01 }, { 0x2560, 0xcc, 0x00 },
493 	{ 0x2561, 0xb5, 0x00 }, { 0x2562, 0xb6, 0x00 },
494 	{ 0x2563, 0xb9, 0x00 }, { 0x2564, 0xd1, 0x01 },
495 	{ 0x2566, 0xcb, 0x00 }, { 0x2567, 0xcf, 0x00 },
496 	{ 0x2568, 0xd0, 0x00 }, { 0x2569, 0xca, 0x00 },
497 	{ 0x256a, 0xd8, 0x00 }, { 0x256b, 0xd7, 0x00 },
498 	{ 0x256c, 0xce, 0x00 }, { 0x2580, 0xdf, 0x00 },
499 	{ 0x2584, 0xdc, 0x00 }, { 0x2588, 0xdb, 0x00 },
500 	{ 0x258c, 0xdd, 0x00 }, { 0x2590, 0xde, 0x00 },
501 	{ 0x2591, 0xb0, 0x02 }, { 0x25a0, 0xfe, 0x00 },
502 	{ 0x25ac, 0x16, 0x00 },
503 	{ 0x25ae, 0xdb, 0x00 }, { 0x25b2, 0x1e, 0x00 },
504 	{ 0x25ba, 0x10, 0x00 }, { 0x25bc, 0x1f, 0x00 },
505 	{ 0x25c4, 0x11, 0x00 }, { 0x25cb, 0x09, 0x00 },
506 	{ 0x25d8, 0x08, 0x00 }, { 0x25d9, 0x0a, 0x00 },
507 	{ 0x263a, 0x01, 0x01 }, { 0x263c, 0x0f, 0x00 },
508 	{ 0x2640, 0x0c, 0x00 }, { 0x2642, 0x0b, 0x00 },
509 	{ 0x2660, 0x06, 0x00 }, { 0x2663, 0x05, 0x00 },
510 	{ 0x2665, 0x03, 0x01 }, { 0x266a, 0x0d, 0x01 },
511 };
512 
513 static void
514 scteken_get_cp437(teken_char_t *c, int *attr)
515 {
516 	int min, mid, max;
517 
518 	min = 0;
519 	max = (sizeof(cp437table) / sizeof(struct unicp437)) - 1;
520 
521 	if (*c < cp437table[0].unicode_base ||
522 	    *c > cp437table[max].unicode_base + cp437table[max].length)
523 		goto bad;
524 
525 	while (max >= min) {
526 		mid = (min + max) / 2;
527 		if (*c < cp437table[mid].unicode_base) {
528 			max = mid - 1;
529 		} else if (*c > cp437table[mid].unicode_base +
530 		    cp437table[mid].length) {
531 			min = mid + 1;
532 		} else {
533 			*c -= cp437table[mid].unicode_base;
534 			*c += cp437table[mid].cp437_base;
535 			return;
536 		}
537 	}
538 bad:
539 	/* Character not present in CP437. */
540 	*attr = (FG_RED|BG_BLACK) << 8;
541 	*c = '?';
542 }
543 #endif /* TEKEN_UTF8 */
544 
545 static void
546 scteken_putchar(void *arg, const teken_pos_t *tp, teken_char_t c,
547     const teken_attr_t *a)
548 {
549 	scr_stat *scp = arg;
550 	u_char *map;
551 	u_char ch;
552 	vm_offset_t p;
553 	int cursor, attr;
554 
555 	attr = scteken_attr(a) << 8;
556 #ifdef TEKEN_UTF8
557 	scteken_get_cp437(&c, &attr);
558 #endif /* TEKEN_UTF8 */
559 	ch = c;
560 
561 	map = scp->sc->scr_map;
562 
563 	cursor = tp->tp_row * scp->xsize + tp->tp_col;
564 	p = sc_vtb_pointer(&scp->vtb, cursor);
565 	sc_vtb_putchar(&scp->vtb, p, map[ch], attr);
566 
567 	mark_for_update(scp, cursor);
568 	/*
569 	 * XXX: Why do we need this? Only marking `cursor' should be
570 	 * enough. Without this line, we get artifacts.
571 	 */
572 	mark_for_update(scp, imin(cursor + 1, scp->xsize * scp->ysize - 1));
573 }
574 
575 static void
576 scteken_fill(void *arg, const teken_rect_t *r, teken_char_t c,
577     const teken_attr_t *a)
578 {
579 	scr_stat *scp = arg;
580 	u_char *map;
581 	u_char ch;
582 	unsigned int width;
583 	int attr, row;
584 
585 	attr = scteken_attr(a) << 8;
586 #ifdef TEKEN_UTF8
587 	scteken_get_cp437(&c, &attr);
588 #endif /* TEKEN_UTF8 */
589 	ch = c;
590 
591 	map = scp->sc->scr_map;
592 
593 	if (r->tr_begin.tp_col == 0 && r->tr_end.tp_col == scp->xsize) {
594 		/* Single contiguous region to fill. */
595 		sc_vtb_erase(&scp->vtb, r->tr_begin.tp_row * scp->xsize,
596 		    (r->tr_end.tp_row - r->tr_begin.tp_row) * scp->xsize,
597 		    map[ch], attr);
598 	} else {
599 		/* Fill display line by line. */
600 		width = r->tr_end.tp_col - r->tr_begin.tp_col;
601 
602 		for (row = r->tr_begin.tp_row; row < r->tr_end.tp_row; row++) {
603 			sc_vtb_erase(&scp->vtb, r->tr_begin.tp_row *
604 			    scp->xsize + r->tr_begin.tp_col,
605 			    width, map[ch], attr);
606 		}
607 	}
608 
609 	/* Mark begin and end positions to be refreshed. */
610 	mark_for_update(scp,
611 	    r->tr_begin.tp_row * scp->xsize + r->tr_begin.tp_col);
612 	mark_for_update(scp,
613 	    (r->tr_end.tp_row - 1) * scp->xsize + (r->tr_end.tp_col - 1));
614 	sc_remove_cutmarking(scp);
615 }
616 
617 static void
618 scteken_copy(void *arg, const teken_rect_t *r, const teken_pos_t *p)
619 {
620 	scr_stat *scp = arg;
621 	unsigned int width;
622 	int src, dst, end;
623 
624 #ifndef SC_NO_HISTORY
625 	/*
626 	 * We count a line of input as history if we perform a copy of
627 	 * one whole line upward. In other words: if a line of text gets
628 	 * overwritten by a rectangle that's right below it.
629 	 */
630 	if (scp->history != NULL &&
631 	    r->tr_begin.tp_col == 0 && r->tr_end.tp_col == scp->xsize &&
632 	    r->tr_begin.tp_row == p->tp_row + 1) {
633 		sc_hist_save_one_line(scp, p->tp_row);
634 	}
635 #endif
636 
637 	if (r->tr_begin.tp_col == 0 && r->tr_end.tp_col == scp->xsize) {
638 		/* Single contiguous region to copy. */
639 		sc_vtb_move(&scp->vtb, r->tr_begin.tp_row * scp->xsize,
640 		    p->tp_row * scp->xsize,
641 		    (r->tr_end.tp_row - r->tr_begin.tp_row) * scp->xsize);
642 	} else {
643 		/* Copy line by line. */
644 		width = r->tr_end.tp_col - r->tr_begin.tp_col;
645 
646 		if (p->tp_row < r->tr_begin.tp_row) {
647 			/* Copy from top to bottom. */
648 			src = r->tr_begin.tp_row * scp->xsize +
649 			    r->tr_begin.tp_col;
650 			end = r->tr_end.tp_row * scp->xsize +
651 			    r->tr_end.tp_col;
652 			dst = p->tp_row * scp->xsize + p->tp_col;
653 
654 			while (src < end) {
655 				sc_vtb_move(&scp->vtb, src, dst, width);
656 
657 				src += scp->xsize;
658 				dst += scp->xsize;
659 			}
660 		} else {
661 			/* Copy from bottom to top. */
662 			src = (r->tr_end.tp_row - 1) * scp->xsize +
663 			    r->tr_begin.tp_col;
664 			end = r->tr_begin.tp_row * scp->xsize +
665 			    r->tr_begin.tp_col;
666 			dst = (p->tp_row + r->tr_end.tp_row -
667 			    r->tr_begin.tp_row - 1) * scp->xsize + p->tp_col;
668 
669 			while (src >= end) {
670 				sc_vtb_move(&scp->vtb, src, dst, width);
671 
672 				src -= scp->xsize;
673 				dst -= scp->xsize;
674 			}
675 		}
676 	}
677 
678 	/* Mark begin and end positions to be refreshed. */
679 	mark_for_update(scp,
680 	    p->tp_row * scp->xsize + p->tp_col);
681 	mark_for_update(scp,
682 	    (p->tp_row + r->tr_end.tp_row - r->tr_begin.tp_row - 1) *
683 	    scp->xsize +
684 	    (p->tp_col + r->tr_end.tp_col - r->tr_begin.tp_col - 1));
685 	sc_remove_cutmarking(scp);
686 }
687 
688 static void
689 scteken_param(void *arg, int cmd, unsigned int value)
690 {
691 	scr_stat *scp = arg;
692 
693 	switch (cmd) {
694 	case TP_SHOWCURSOR:
695 		if (value) {
696 			sc_change_cursor_shape(scp,
697 			    CONS_RESET_CURSOR|CONS_LOCAL_CURSOR, -1, -1);
698 		} else {
699 			sc_change_cursor_shape(scp,
700 			    CONS_HIDDEN_CURSOR|CONS_LOCAL_CURSOR, -1, -1);
701 		}
702 		break;
703 	case TP_SWITCHVT:
704 		sc_switch_scr(scp->sc, value);
705 		break;
706 	case TP_SETBELLPD:
707 		scp->bell_pitch = TP_SETBELLPD_PITCH(value);
708 		scp->bell_duration = TP_SETBELLPD_DURATION(value);
709 		break;
710 	case TP_MOUSE:
711 		scp->mouse_level = value;
712 		break;
713 	}
714 }
715 
716 static void
717 scteken_respond(void *arg, const void *buf, size_t len)
718 {
719 	scr_stat *scp = arg;
720 
721 	sc_respond(scp, buf, len, 0);
722 }
723