xref: /freebsd/sys/dev/syscons/scterm-teken.c (revision bc96366c864c07ef352edb92017357917c75b36c)
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(__arm__) || defined(__mips__) || \
44 	defined(__powerpc__) || defined(__sparc64__)
45 #include <machine/sc_machdep.h>
46 #else
47 #include <machine/pc/display.h>
48 #endif
49 
50 #include <dev/syscons/syscons.h>
51 
52 #include <teken/teken.h>
53 
54 static void scteken_revattr(unsigned char, teken_attr_t *);
55 static unsigned int scteken_attr(const teken_attr_t *);
56 
57 static sc_term_init_t		scteken_init;
58 static sc_term_term_t		scteken_term;
59 static sc_term_puts_t		scteken_puts;
60 static sc_term_ioctl_t		scteken_ioctl;
61 static sc_term_default_attr_t	scteken_default_attr;
62 static sc_term_clear_t		scteken_clear;
63 static sc_term_input_t		scteken_input;
64 static sc_term_fkeystr_t	scteken_fkeystr;
65 static void			scteken_nop(void);
66 
67 typedef struct {
68 	teken_t		ts_teken;
69 	int		ts_busy;
70 } teken_stat;
71 
72 static teken_stat	reserved_teken_stat;
73 
74 static sc_term_sw_t sc_term_scteken = {
75 	{ NULL, NULL },
76 	"scteken",			/* emulator name */
77 	"teken terminal",		/* description */
78 	"*",				/* matching renderer */
79 	sizeof(teken_stat),		/* softc size */
80 	0,
81 	scteken_init,
82 	scteken_term,
83 	scteken_puts,
84 	scteken_ioctl,
85 	(sc_term_reset_t *)scteken_nop,
86 	scteken_default_attr,
87 	scteken_clear,
88 	(sc_term_notify_t *)scteken_nop,
89 	scteken_input,
90 	scteken_fkeystr,
91 };
92 
93 SCTERM_MODULE(scteken, sc_term_scteken);
94 
95 static tf_bell_t	scteken_bell;
96 static tf_cursor_t	scteken_cursor;
97 static tf_putchar_t	scteken_putchar;
98 static tf_fill_t	scteken_fill;
99 static tf_copy_t	scteken_copy;
100 static tf_param_t	scteken_param;
101 static tf_respond_t	scteken_respond;
102 
103 static const teken_funcs_t scteken_funcs = {
104 	.tf_bell	= scteken_bell,
105 	.tf_cursor	= scteken_cursor,
106 	.tf_putchar	= scteken_putchar,
107 	.tf_fill	= scteken_fill,
108 	.tf_copy	= scteken_copy,
109 	.tf_param	= scteken_param,
110 	.tf_respond	= scteken_respond,
111 };
112 
113 static int
114 scteken_init(scr_stat *scp, void **softc, int code)
115 {
116 	teken_stat *ts;
117 	teken_pos_t tp;
118 
119 	if (*softc == NULL) {
120 		if (reserved_teken_stat.ts_busy)
121 			return (EINVAL);
122 		*softc = &reserved_teken_stat;
123 	}
124 	ts = *softc;
125 
126 	switch (code) {
127 	case SC_TE_COLD_INIT:
128 		++sc_term_scteken.te_refcount;
129 		ts->ts_busy = 1;
130 		/* FALLTHROUGH */
131 	case SC_TE_WARM_INIT:
132 		teken_init(&ts->ts_teken, &scteken_funcs, scp);
133 #ifndef TEKEN_UTF8
134 		teken_set_8bit(&ts->ts_teken);
135 #endif /* !TEKEN_UTF8 */
136 #ifdef TEKEN_CONS25
137 		teken_set_cons25(&ts->ts_teken);
138 #endif /* TEKEN_CONS25 */
139 
140 		tp.tp_row = scp->ysize;
141 		tp.tp_col = scp->xsize;
142 		teken_set_winsize(&ts->ts_teken, &tp);
143 
144 		if (scp->cursor_pos < scp->ysize * scp->xsize) {
145 			/* Valid old cursor position. */
146 			tp.tp_row = scp->cursor_pos / scp->xsize;
147 			tp.tp_col = scp->cursor_pos % scp->xsize;
148 			teken_set_cursor(&ts->ts_teken, &tp);
149 		}
150 		break;
151 	}
152 
153 	return (0);
154 }
155 
156 static int
157 scteken_term(scr_stat *scp, void **softc)
158 {
159 
160 	if (*softc == &reserved_teken_stat) {
161 		*softc = NULL;
162 		reserved_teken_stat.ts_busy = 0;
163 	}
164 	--sc_term_scteken.te_refcount;
165 
166 	return (0);
167 }
168 
169 static void
170 scteken_puts(scr_stat *scp, u_char *buf, int len, int kernel)
171 {
172 	teken_stat *ts = scp->ts;
173 	teken_attr_t backup, kattr;
174 
175 	scp->sc->write_in_progress++;
176 	if (kernel) {
177 		/* Use special colors for kernel messages. */
178 		backup = *teken_get_curattr(&ts->ts_teken);
179 		scteken_revattr(SC_KERNEL_CONS_ATTR, &kattr);
180 		teken_set_curattr(&ts->ts_teken, &kattr);
181 		teken_input(&ts->ts_teken, buf, len);
182 		teken_set_curattr(&ts->ts_teken, &backup);
183 	} else {
184 		/* Print user messages with regular colors. */
185 		teken_input(&ts->ts_teken, buf, len);
186 	}
187 	scp->sc->write_in_progress--;
188 }
189 
190 static int
191 scteken_ioctl(scr_stat *scp, struct tty *tp, u_long cmd, caddr_t data,
192 	     struct thread *td)
193 {
194 	teken_stat *ts = scp->ts;
195 	vid_info_t *vi;
196 	unsigned int attr;
197 
198 	switch (cmd) {
199 	case GIO_ATTR:      	/* get current attributes */
200 		*(int*)data =
201 		    scteken_attr(teken_get_curattr(&ts->ts_teken));
202 		return (0);
203 	case CONS_GETINFO:  	/* get current (virtual) console info */
204 		vi = (vid_info_t *)data;
205 		if (vi->size != sizeof(struct vid_info))
206 			return EINVAL;
207 
208 		attr = scteken_attr(teken_get_defattr(&ts->ts_teken));
209 		vi->mv_norm.fore = attr & 0x0f;
210 		vi->mv_norm.back = (attr >> 4) & 0x0f;
211 		vi->mv_rev.fore = vi->mv_norm.back;
212 		vi->mv_rev.back = vi->mv_norm.fore;
213 		/*
214 		 * The other fields are filled by the upper routine. XXX
215 		 */
216 		return (ENOIOCTL);
217 	}
218 
219 	return (ENOIOCTL);
220 }
221 
222 static void
223 scteken_default_attr(scr_stat *scp, int color, int rev_color)
224 {
225 	teken_stat *ts = scp->ts;
226 	teken_attr_t ta;
227 
228 	scteken_revattr(color, &ta);
229 	teken_set_defattr(&ts->ts_teken, &ta);
230 }
231 
232 static void
233 scteken_clear(scr_stat *scp)
234 {
235 
236 	sc_move_cursor(scp, 0, 0);
237 	sc_vtb_clear(&scp->vtb, scp->sc->scr_map[0x20], SC_NORM_ATTR << 8);
238 	mark_all(scp);
239 }
240 
241 static int
242 scteken_input(scr_stat *scp, int c, struct tty *tp)
243 {
244 
245 	return FALSE;
246 }
247 
248 static const char *
249 scteken_fkeystr(scr_stat *scp, int c)
250 {
251 	teken_stat *ts = scp->ts;
252 	unsigned int k;
253 
254 	switch (c) {
255 	case FKEY | F(1):  case FKEY | F(2):  case FKEY | F(3):
256 	case FKEY | F(4):  case FKEY | F(5):  case FKEY | F(6):
257 	case FKEY | F(7):  case FKEY | F(8):  case FKEY | F(9):
258 	case FKEY | F(10): case FKEY | F(11): case FKEY | F(12):
259 		k = TKEY_F1 + c - (FKEY | F(1));
260 		break;
261 	case FKEY | F(49):
262 		k = TKEY_HOME;
263 		break;
264 	case FKEY | F(50):
265 		k = TKEY_UP;
266 		break;
267 	case FKEY | F(51):
268 		k = TKEY_PAGE_UP;
269 		break;
270 	case FKEY | F(53):
271 		k = TKEY_LEFT;
272 		break;
273 	case FKEY | F(55):
274 		k = TKEY_RIGHT;
275 		break;
276 	case FKEY | F(57):
277 		k = TKEY_END;
278 		break;
279 	case FKEY | F(58):
280 		k = TKEY_DOWN;
281 		break;
282 	case FKEY | F(59):
283 		k = TKEY_PAGE_DOWN;
284 		break;
285 	case FKEY | F(60):
286 		k = TKEY_INSERT;
287 		break;
288 	case FKEY | F(61):
289 		k = TKEY_DELETE;
290 		break;
291 	default:
292 		return (NULL);
293 	}
294 
295 	return (teken_get_sequence(&ts->ts_teken, k));
296 }
297 
298 static void
299 scteken_nop(void)
300 {
301 
302 }
303 
304 /*
305  * libteken routines.
306  */
307 
308 static const unsigned char fgcolors_normal[TC_NCOLORS] = {
309 	FG_BLACK,     FG_RED,          FG_GREEN,      FG_BROWN,
310 	FG_BLUE,      FG_MAGENTA,      FG_CYAN,       FG_LIGHTGREY,
311 };
312 
313 static const unsigned char fgcolors_bold[TC_NCOLORS] = {
314 	FG_DARKGREY,  FG_LIGHTRED,     FG_LIGHTGREEN, FG_YELLOW,
315 	FG_LIGHTBLUE, FG_LIGHTMAGENTA, FG_LIGHTCYAN,  FG_WHITE,
316 };
317 
318 static const unsigned char bgcolors[TC_NCOLORS] = {
319 	BG_BLACK,     BG_RED,          BG_GREEN,      BG_BROWN,
320 	BG_BLUE,      BG_MAGENTA,      BG_CYAN,       BG_LIGHTGREY,
321 };
322 
323 static void
324 scteken_revattr(unsigned char color, teken_attr_t *a)
325 {
326 	teken_color_t fg, bg;
327 
328 	/*
329 	 * XXX: Reverse conversion of syscons to teken attributes. Not
330 	 * realiable. Maybe we should turn it into a 1:1 mapping one of
331 	 * these days?
332 	 */
333 
334 	a->ta_format = 0;
335 	a->ta_fgcolor = TC_WHITE;
336 	a->ta_bgcolor = TC_BLACK;
337 
338 #ifdef FG_BLINK
339 	if (color & FG_BLINK) {
340 		a->ta_format |= TF_BLINK;
341 		color &= ~FG_BLINK;
342 	}
343 #endif /* FG_BLINK */
344 
345 	for (fg = 0; fg < TC_NCOLORS; fg++) {
346 		for (bg = 0; bg < TC_NCOLORS; bg++) {
347 			if ((fgcolors_normal[fg] | bgcolors[bg]) == color) {
348 				a->ta_fgcolor = fg;
349 				a->ta_bgcolor = bg;
350 				return;
351 			}
352 
353 			if ((fgcolors_bold[fg] | bgcolors[bg]) == color) {
354 				a->ta_fgcolor = fg;
355 				a->ta_bgcolor = bg;
356 				a->ta_format |= TF_BOLD;
357 				return;
358 			}
359 		}
360 	}
361 }
362 
363 static unsigned int
364 scteken_attr(const teken_attr_t *a)
365 {
366 	unsigned int attr = 0;
367 	teken_color_t fg, bg;
368 
369 	if (a->ta_format & TF_REVERSE) {
370 		fg = teken_256to8(a->ta_bgcolor);
371 		bg = teken_256to8(a->ta_fgcolor);
372 	} else {
373 		fg = teken_256to8(a->ta_fgcolor);
374 		bg = teken_256to8(a->ta_bgcolor);
375 	}
376 	if (a->ta_format & TF_BOLD)
377 		attr |= fgcolors_bold[fg];
378 	else
379 		attr |= fgcolors_normal[fg];
380 	attr |= bgcolors[bg];
381 
382 #ifdef FG_UNDERLINE
383 	if (a->ta_format & TF_UNDERLINE)
384 		attr |= FG_UNDERLINE;
385 #endif /* FG_UNDERLINE */
386 #ifdef FG_BLINK
387 	if (a->ta_format & TF_BLINK)
388 		attr |= FG_BLINK;
389 #endif /* FG_BLINK */
390 
391 	return (attr);
392 }
393 
394 static void
395 scteken_bell(void *arg)
396 {
397 	scr_stat *scp = arg;
398 
399 	sc_bell(scp, scp->bell_pitch, scp->bell_duration);
400 }
401 
402 static void
403 scteken_cursor(void *arg, const teken_pos_t *p)
404 {
405 	scr_stat *scp = arg;
406 
407 	sc_move_cursor(scp, p->tp_col, p->tp_row);
408 }
409 
410 #ifdef TEKEN_UTF8
411 struct unicp437 {
412 	uint16_t	unicode_base;
413 	uint8_t		cp437_base;
414 	uint8_t		length;
415 };
416 
417 static const struct unicp437 cp437table[] = {
418 	{ 0x0020, 0x20, 0x5e }, { 0x00a0, 0x20, 0x00 },
419 	{ 0x00a1, 0xad, 0x00 }, { 0x00a2, 0x9b, 0x00 },
420 	{ 0x00a3, 0x9c, 0x00 }, { 0x00a5, 0x9d, 0x00 },
421 	{ 0x00a7, 0x15, 0x00 }, { 0x00aa, 0xa6, 0x00 },
422 	{ 0x00ab, 0xae, 0x00 }, { 0x00ac, 0xaa, 0x00 },
423 	{ 0x00b0, 0xf8, 0x00 }, { 0x00b1, 0xf1, 0x00 },
424 	{ 0x00b2, 0xfd, 0x00 }, { 0x00b5, 0xe6, 0x00 },
425 	{ 0x00b6, 0x14, 0x00 }, { 0x00b7, 0xfa, 0x00 },
426 	{ 0x00ba, 0xa7, 0x00 }, { 0x00bb, 0xaf, 0x00 },
427 	{ 0x00bc, 0xac, 0x00 }, { 0x00bd, 0xab, 0x00 },
428 	{ 0x00bf, 0xa8, 0x00 }, { 0x00c0, 0x41, 0x00 },
429 	{ 0x00c1, 0x41, 0x00 }, { 0x00c2, 0x41, 0x00 },
430 	{ 0x00c4, 0x8e, 0x01 }, { 0x00c6, 0x92, 0x00 },
431 	{ 0x00c7, 0x80, 0x00 }, { 0x00c8, 0x45, 0x00 },
432 	{ 0x00c9, 0x90, 0x00 }, { 0x00ca, 0x45, 0x00 },
433 	{ 0x00cb, 0x45, 0x00 }, { 0x00cc, 0x49, 0x00 },
434 	{ 0x00cd, 0x49, 0x00 }, { 0x00ce, 0x49, 0x00 },
435 	{ 0x00cf, 0x49, 0x00 }, { 0x00d1, 0xa5, 0x00 },
436 	{ 0x00d2, 0x4f, 0x00 }, { 0x00d3, 0x4f, 0x00 },
437 	{ 0x00d4, 0x4f, 0x00 }, { 0x00d6, 0x99, 0x00 },
438 	{ 0x00d9, 0x55, 0x00 }, { 0x00da, 0x55, 0x00 },
439 	{ 0x00db, 0x55, 0x00 }, { 0x00dc, 0x9a, 0x00 },
440 	{ 0x00df, 0xe1, 0x00 }, { 0x00e0, 0x85, 0x00 },
441 	{ 0x00e1, 0xa0, 0x00 }, { 0x00e2, 0x83, 0x00 },
442 	{ 0x00e4, 0x84, 0x00 }, { 0x00e5, 0x86, 0x00 },
443 	{ 0x00e6, 0x91, 0x00 }, { 0x00e7, 0x87, 0x00 },
444 	{ 0x00e8, 0x8a, 0x00 }, { 0x00e9, 0x82, 0x00 },
445 	{ 0x00ea, 0x88, 0x01 }, { 0x00ec, 0x8d, 0x00 },
446 	{ 0x00ed, 0xa1, 0x00 }, { 0x00ee, 0x8c, 0x00 },
447 	{ 0x00ef, 0x8b, 0x00 }, { 0x00f0, 0xeb, 0x00 },
448 	{ 0x00f1, 0xa4, 0x00 }, { 0x00f2, 0x95, 0x00 },
449 	{ 0x00f3, 0xa2, 0x00 }, { 0x00f4, 0x93, 0x00 },
450 	{ 0x00f6, 0x94, 0x00 }, { 0x00f7, 0xf6, 0x00 },
451 	{ 0x00f8, 0xed, 0x00 }, { 0x00f9, 0x97, 0x00 },
452 	{ 0x00fa, 0xa3, 0x00 }, { 0x00fb, 0x96, 0x00 },
453 	{ 0x00fc, 0x81, 0x00 }, { 0x00ff, 0x98, 0x00 },
454 	{ 0x013f, 0x4c, 0x00 }, { 0x0140, 0x6c, 0x00 },
455 	{ 0x0192, 0x9f, 0x00 }, { 0x0393, 0xe2, 0x00 },
456 	{ 0x0398, 0xe9, 0x00 }, { 0x03a3, 0xe4, 0x00 },
457 	{ 0x03a6, 0xe8, 0x00 }, { 0x03a9, 0xea, 0x00 },
458 	{ 0x03b1, 0xe0, 0x01 }, { 0x03b4, 0xeb, 0x00 },
459 	{ 0x03b5, 0xee, 0x00 }, { 0x03bc, 0xe6, 0x00 },
460 	{ 0x03c0, 0xe3, 0x00 }, { 0x03c3, 0xe5, 0x00 },
461 	{ 0x03c4, 0xe7, 0x00 }, { 0x03c6, 0xed, 0x00 },
462 	{ 0x03d5, 0xed, 0x00 }, { 0x2010, 0x2d, 0x00 },
463 	{ 0x2014, 0x2d, 0x00 }, { 0x2018, 0x60, 0x00 },
464 	{ 0x2019, 0x27, 0x00 }, { 0x201c, 0x22, 0x00 },
465 	{ 0x201d, 0x22, 0x00 }, { 0x2022, 0x07, 0x00 },
466 	{ 0x203c, 0x13, 0x00 }, { 0x207f, 0xfc, 0x00 },
467 	{ 0x20a7, 0x9e, 0x00 }, { 0x20ac, 0xee, 0x00 },
468 	{ 0x2126, 0xea, 0x00 }, { 0x2190, 0x1b, 0x00 },
469 	{ 0x2191, 0x18, 0x00 }, { 0x2192, 0x1a, 0x00 },
470 	{ 0x2193, 0x19, 0x00 }, { 0x2194, 0x1d, 0x00 },
471 	{ 0x2195, 0x12, 0x00 }, { 0x21a8, 0x17, 0x00 },
472 	{ 0x2202, 0xeb, 0x00 }, { 0x2208, 0xee, 0x00 },
473 	{ 0x2211, 0xe4, 0x00 }, { 0x2212, 0x2d, 0x00 },
474 	{ 0x2219, 0xf9, 0x00 }, { 0x221a, 0xfb, 0x00 },
475 	{ 0x221e, 0xec, 0x00 }, { 0x221f, 0x1c, 0x00 },
476 	{ 0x2229, 0xef, 0x00 }, { 0x2248, 0xf7, 0x00 },
477 	{ 0x2261, 0xf0, 0x00 }, { 0x2264, 0xf3, 0x00 },
478 	{ 0x2265, 0xf2, 0x00 }, { 0x2302, 0x7f, 0x00 },
479 	{ 0x2310, 0xa9, 0x00 }, { 0x2320, 0xf4, 0x00 },
480 	{ 0x2321, 0xf5, 0x00 }, { 0x2500, 0xc4, 0x00 },
481 	{ 0x2502, 0xb3, 0x00 }, { 0x250c, 0xda, 0x00 },
482 	{ 0x2510, 0xbf, 0x00 }, { 0x2514, 0xc0, 0x00 },
483 	{ 0x2518, 0xd9, 0x00 }, { 0x251c, 0xc3, 0x00 },
484 	{ 0x2524, 0xb4, 0x00 }, { 0x252c, 0xc2, 0x00 },
485 	{ 0x2534, 0xc1, 0x00 }, { 0x253c, 0xc5, 0x00 },
486 	{ 0x2550, 0xcd, 0x00 }, { 0x2551, 0xba, 0x00 },
487 	{ 0x2552, 0xd5, 0x00 }, { 0x2553, 0xd6, 0x00 },
488 	{ 0x2554, 0xc9, 0x00 }, { 0x2555, 0xb8, 0x00 },
489 	{ 0x2556, 0xb7, 0x00 }, { 0x2557, 0xbb, 0x00 },
490 	{ 0x2558, 0xd4, 0x00 }, { 0x2559, 0xd3, 0x00 },
491 	{ 0x255a, 0xc8, 0x00 }, { 0x255b, 0xbe, 0x00 },
492 	{ 0x255c, 0xbd, 0x00 }, { 0x255d, 0xbc, 0x00 },
493 	{ 0x255e, 0xc6, 0x01 }, { 0x2560, 0xcc, 0x00 },
494 	{ 0x2561, 0xb5, 0x00 }, { 0x2562, 0xb6, 0x00 },
495 	{ 0x2563, 0xb9, 0x00 }, { 0x2564, 0xd1, 0x01 },
496 	{ 0x2566, 0xcb, 0x00 }, { 0x2567, 0xcf, 0x00 },
497 	{ 0x2568, 0xd0, 0x00 }, { 0x2569, 0xca, 0x00 },
498 	{ 0x256a, 0xd8, 0x00 }, { 0x256b, 0xd7, 0x00 },
499 	{ 0x256c, 0xce, 0x00 }, { 0x2580, 0xdf, 0x00 },
500 	{ 0x2584, 0xdc, 0x00 }, { 0x2588, 0xdb, 0x00 },
501 	{ 0x258c, 0xdd, 0x00 }, { 0x2590, 0xde, 0x00 },
502 	{ 0x2591, 0xb0, 0x02 }, { 0x25a0, 0xfe, 0x00 },
503 	{ 0x25ac, 0x16, 0x00 },
504 	{ 0x25ae, 0xdb, 0x00 }, { 0x25b2, 0x1e, 0x00 },
505 	{ 0x25ba, 0x10, 0x00 }, { 0x25bc, 0x1f, 0x00 },
506 	{ 0x25c4, 0x11, 0x00 }, { 0x25cb, 0x09, 0x00 },
507 	{ 0x25d8, 0x08, 0x00 }, { 0x25d9, 0x0a, 0x00 },
508 	{ 0x263a, 0x01, 0x01 }, { 0x263c, 0x0f, 0x00 },
509 	{ 0x2640, 0x0c, 0x00 }, { 0x2642, 0x0b, 0x00 },
510 	{ 0x2660, 0x06, 0x00 }, { 0x2663, 0x05, 0x00 },
511 	{ 0x2665, 0x03, 0x01 }, { 0x266a, 0x0d, 0x01 },
512 };
513 
514 static void
515 scteken_get_cp437(teken_char_t *c, int *attr)
516 {
517 	int min, mid, max;
518 
519 	min = 0;
520 	max = (sizeof(cp437table) / sizeof(struct unicp437)) - 1;
521 
522 	if (*c < cp437table[0].unicode_base ||
523 	    *c > cp437table[max].unicode_base + cp437table[max].length)
524 		goto bad;
525 
526 	while (max >= min) {
527 		mid = (min + max) / 2;
528 		if (*c < cp437table[mid].unicode_base) {
529 			max = mid - 1;
530 		} else if (*c > cp437table[mid].unicode_base +
531 		    cp437table[mid].length) {
532 			min = mid + 1;
533 		} else {
534 			*c -= cp437table[mid].unicode_base;
535 			*c += cp437table[mid].cp437_base;
536 			return;
537 		}
538 	}
539 bad:
540 	/* Character not present in CP437. */
541 	*attr = (FG_RED|BG_BLACK) << 8;
542 	*c = '?';
543 }
544 #endif /* TEKEN_UTF8 */
545 
546 static void
547 scteken_putchar(void *arg, const teken_pos_t *tp, teken_char_t c,
548     const teken_attr_t *a)
549 {
550 	scr_stat *scp = arg;
551 	u_char *map;
552 	u_char ch;
553 	vm_offset_t p;
554 	int cursor, attr;
555 
556 	/*
557 	 * No support for printing right hand sides for CJK fullwidth
558 	 * characters. Simply print a space and assume that the left
559 	 * hand side describes the entire character.
560 	 */
561 	attr = scteken_attr(a) << 8;
562 	if (a->ta_format & TF_CJK_RIGHT)
563 		c = ' ';
564 #ifdef TEKEN_UTF8
565 	scteken_get_cp437(&c, &attr);
566 #endif /* TEKEN_UTF8 */
567 	ch = c;
568 
569 	map = scp->sc->scr_map;
570 
571 	cursor = tp->tp_row * scp->xsize + tp->tp_col;
572 	p = sc_vtb_pointer(&scp->vtb, cursor);
573 	sc_vtb_putchar(&scp->vtb, p, map[ch], attr);
574 
575 	mark_for_update(scp, cursor);
576 	/*
577 	 * XXX: Why do we need this? Only marking `cursor' should be
578 	 * enough. Without this line, we get artifacts.
579 	 */
580 	mark_for_update(scp, imin(cursor + 1, scp->xsize * scp->ysize - 1));
581 }
582 
583 static void
584 scteken_fill(void *arg, const teken_rect_t *r, teken_char_t c,
585     const teken_attr_t *a)
586 {
587 	scr_stat *scp = arg;
588 	u_char *map;
589 	u_char ch;
590 	unsigned int width;
591 	int attr, row;
592 
593 	attr = scteken_attr(a) << 8;
594 #ifdef TEKEN_UTF8
595 	scteken_get_cp437(&c, &attr);
596 #endif /* TEKEN_UTF8 */
597 	ch = c;
598 
599 	map = scp->sc->scr_map;
600 
601 	if (r->tr_begin.tp_col == 0 && r->tr_end.tp_col == scp->xsize) {
602 		/* Single contiguous region to fill. */
603 		sc_vtb_erase(&scp->vtb, r->tr_begin.tp_row * scp->xsize,
604 		    (r->tr_end.tp_row - r->tr_begin.tp_row) * scp->xsize,
605 		    map[ch], attr);
606 	} else {
607 		/* Fill display line by line. */
608 		width = r->tr_end.tp_col - r->tr_begin.tp_col;
609 
610 		for (row = r->tr_begin.tp_row; row < r->tr_end.tp_row; row++) {
611 			sc_vtb_erase(&scp->vtb, r->tr_begin.tp_row *
612 			    scp->xsize + r->tr_begin.tp_col,
613 			    width, map[ch], attr);
614 		}
615 	}
616 
617 	/* Mark begin and end positions to be refreshed. */
618 	mark_for_update(scp,
619 	    r->tr_begin.tp_row * scp->xsize + r->tr_begin.tp_col);
620 	mark_for_update(scp,
621 	    (r->tr_end.tp_row - 1) * scp->xsize + (r->tr_end.tp_col - 1));
622 	sc_remove_cutmarking(scp);
623 }
624 
625 static void
626 scteken_copy(void *arg, const teken_rect_t *r, const teken_pos_t *p)
627 {
628 	scr_stat *scp = arg;
629 	unsigned int width;
630 	int src, dst, end;
631 
632 #ifndef SC_NO_HISTORY
633 	/*
634 	 * We count a line of input as history if we perform a copy of
635 	 * one whole line upward. In other words: if a line of text gets
636 	 * overwritten by a rectangle that's right below it.
637 	 */
638 	if (scp->history != NULL &&
639 	    r->tr_begin.tp_col == 0 && r->tr_end.tp_col == scp->xsize &&
640 	    r->tr_begin.tp_row == p->tp_row + 1) {
641 		sc_hist_save_one_line(scp, p->tp_row);
642 	}
643 #endif
644 
645 	if (r->tr_begin.tp_col == 0 && r->tr_end.tp_col == scp->xsize) {
646 		/* Single contiguous region to copy. */
647 		sc_vtb_move(&scp->vtb, r->tr_begin.tp_row * scp->xsize,
648 		    p->tp_row * scp->xsize,
649 		    (r->tr_end.tp_row - r->tr_begin.tp_row) * scp->xsize);
650 	} else {
651 		/* Copy line by line. */
652 		width = r->tr_end.tp_col - r->tr_begin.tp_col;
653 
654 		if (p->tp_row < r->tr_begin.tp_row) {
655 			/* Copy from top to bottom. */
656 			src = r->tr_begin.tp_row * scp->xsize +
657 			    r->tr_begin.tp_col;
658 			end = r->tr_end.tp_row * scp->xsize +
659 			    r->tr_end.tp_col;
660 			dst = p->tp_row * scp->xsize + p->tp_col;
661 
662 			while (src < end) {
663 				sc_vtb_move(&scp->vtb, src, dst, width);
664 
665 				src += scp->xsize;
666 				dst += scp->xsize;
667 			}
668 		} else {
669 			/* Copy from bottom to top. */
670 			src = (r->tr_end.tp_row - 1) * scp->xsize +
671 			    r->tr_begin.tp_col;
672 			end = r->tr_begin.tp_row * scp->xsize +
673 			    r->tr_begin.tp_col;
674 			dst = (p->tp_row + r->tr_end.tp_row -
675 			    r->tr_begin.tp_row - 1) * scp->xsize + p->tp_col;
676 
677 			while (src >= end) {
678 				sc_vtb_move(&scp->vtb, src, dst, width);
679 
680 				src -= scp->xsize;
681 				dst -= scp->xsize;
682 			}
683 		}
684 	}
685 
686 	/* Mark begin and end positions to be refreshed. */
687 	mark_for_update(scp,
688 	    p->tp_row * scp->xsize + p->tp_col);
689 	mark_for_update(scp,
690 	    (p->tp_row + r->tr_end.tp_row - r->tr_begin.tp_row - 1) *
691 	    scp->xsize +
692 	    (p->tp_col + r->tr_end.tp_col - r->tr_begin.tp_col - 1));
693 	sc_remove_cutmarking(scp);
694 }
695 
696 static void
697 scteken_param(void *arg, int cmd, unsigned int value)
698 {
699 	scr_stat *scp = arg;
700 
701 	switch (cmd) {
702 	case TP_SHOWCURSOR:
703 		if (value) {
704 			sc_change_cursor_shape(scp,
705 			    CONS_RESET_CURSOR|CONS_LOCAL_CURSOR, -1, -1);
706 		} else {
707 			sc_change_cursor_shape(scp,
708 			    CONS_HIDDEN_CURSOR|CONS_LOCAL_CURSOR, -1, -1);
709 		}
710 		break;
711 	case TP_SWITCHVT:
712 		sc_switch_scr(scp->sc, value);
713 		break;
714 	case TP_SETBELLPD:
715 		scp->bell_pitch = TP_SETBELLPD_PITCH(value);
716 		scp->bell_duration = TP_SETBELLPD_DURATION(value);
717 		break;
718 	case TP_MOUSE:
719 		scp->mouse_level = value;
720 		break;
721 	}
722 }
723 
724 static void
725 scteken_respond(void *arg, const void *buf, size_t len)
726 {
727 	scr_stat *scp = arg;
728 
729 	sc_respond(scp, buf, len, 0);
730 }
731