ite_cc.c revision 1.40
1 /* $NetBSD: ite_cc.c,v 1.40 2019/06/29 16:41:19 tsutsui Exp $ */ 2 3 /* 4 * Copyright (c) 1996 Leo Weppelman 5 * Copyright (c) 1994 Christian E. Hopps 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. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Christian E. Hopps. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: ite_cc.c,v 1.40 2019/06/29 16:41:19 tsutsui Exp $"); 36 37 #include <sys/param.h> 38 #include <sys/conf.h> 39 #include <sys/proc.h> 40 #include <sys/ioctl.h> 41 #include <sys/tty.h> 42 #include <sys/systm.h> 43 #include <sys/queue.h> 44 #include <sys/termios.h> 45 #include <sys/malloc.h> 46 #include <sys/device.h> 47 #include <dev/cons.h> 48 #include <machine/cpu.h> 49 #include <atari/atari/device.h> 50 #include <atari/dev/itevar.h> 51 #include <atari/dev/iteioctl.h> 52 #include <atari/dev/grfioctl.h> 53 #include <atari/dev/grfabs_reg.h> 54 #include <atari/dev/grfvar.h> 55 #include <atari/dev/font.h> 56 #include <atari/dev/viewioctl.h> 57 #include <atari/dev/viewvar.h> 58 59 #include "grfcc.h" 60 61 /* 62 * This is what ip->priv points to; 63 * it contains local variables for custom-chip ites. 64 */ 65 struct ite_priv { 66 u_char **row_ptr; /* array of pointers into the bitmap */ 67 u_long row_bytes; 68 u_long cursor_opt; 69 u_short *column_offset; /* array of offsets for columns */ 70 u_int row_offset; /* the row offset */ 71 u_short width; /* the bitmap width */ 72 u_short underline; /* where the underline goes */ 73 u_short ft_x; /* the font width */ 74 u_short ft_y; /* the font height */ 75 u_char *font_cell[256];/* the font pointer */ 76 }; 77 typedef struct ite_priv ipriv_t; 78 79 /* 80 * We need the following space to get an ite-console setup before 81 * the VM-system is brought up. We setup for a 1280x960 monitor with 82 * an 8x8 font. 83 */ 84 #define CONS_MAXROW 120 /* Max. number of rows on console */ 85 #define CONS_MAXCOL 160 /* Max. number of columns on console */ 86 static u_short con_columns[CONS_MAXCOL]; 87 static u_char *con_rows[CONS_MAXROW]; 88 static ipriv_t con_ipriv; 89 90 extern font_info font_info_8x8; 91 extern font_info font_info_8x16; 92 93 static void view_init(struct ite_softc *); 94 static void view_deinit(struct ite_softc *); 95 static int itecc_ioctl(struct ite_softc *, u_long, void *, int, 96 struct lwp *); 97 static int ite_newsize(struct ite_softc *, struct itewinsize *); 98 static void cursor32(struct ite_softc *, int); 99 static void putc8(struct ite_softc *, int, int, int, int); 100 static void clear8(struct ite_softc *, int, int, int, int); 101 static void scroll8(struct ite_softc *, int, int, int, int); 102 static void scrollbmap(bmap_t *, u_short, u_short, u_short, u_short, 103 short, short); 104 105 /* 106 * grfcc config stuff 107 */ 108 static void grfccattach(device_t, device_t, void *); 109 static int grfccmatch(device_t, cfdata_t, void *); 110 static int grfccprint(void *, const char *); 111 112 CFATTACH_DECL_NEW(grfcc, sizeof(struct grf_softc), 113 grfccmatch, grfccattach, NULL, NULL); 114 115 /* 116 * only used in console init. 117 */ 118 static struct cfdata *cfdata_grf = NULL; 119 120 /* 121 * Probe functions we can use: 122 */ 123 #ifdef TT_VIDEO 124 void tt_probe_video(MODES *); 125 #endif /* TT_VIDEO */ 126 #ifdef FALCON_VIDEO 127 void falcon_probe_video(MODES *); 128 #endif /* FALCON_VIDEO */ 129 130 static int 131 grfccmatch(device_t parent, cfdata_t cf, void *aux) 132 { 133 static int did_consinit = 0; 134 static int must_probe = 1; 135 grf_auxp_t *grf_auxp = aux; 136 extern const struct cdevsw view_cdevsw; 137 138 if (must_probe) { 139 /* 140 * Check if the layers we depend on exist 141 */ 142 if (!(machineid & (ATARI_TT|ATARI_FALCON))) 143 return 0; 144 #ifdef TT_VIDEO 145 if ((machineid & ATARI_TT) && !grfabs_probe(&tt_probe_video)) 146 return 0; 147 #endif /* TT_VIDEO */ 148 #ifdef FALCON_VIDEO 149 if ((machineid & ATARI_FALCON) && 150 !grfabs_probe(&falcon_probe_video)) 151 return 0; 152 #endif /* FALCON_VIDEO */ 153 154 viewprobe(); 155 must_probe = 0; 156 } 157 158 if (atari_realconfig == 0) { 159 /* 160 * Early console init. Only match first unit. 161 */ 162 if (did_consinit) 163 return 0; 164 if ((*view_cdevsw.d_open)(cf->cf_unit, 0, 0, NULL)) 165 return 0; 166 cfdata_grf = cf; 167 did_consinit = 1; 168 return 1; 169 } 170 171 /* 172 * Normal config. When we are called directly from the grfbus, 173 * we only match the first unit. The attach function will call us for 174 * the other configured units. 175 */ 176 if (grf_auxp->from_bus_match && (did_consinit > 1)) 177 return 0; 178 179 if (!grf_auxp->from_bus_match && (grf_auxp->unit != cf->cf_unit)) 180 return 0; 181 182 /* 183 * Final constraint: each grf needs a view.... 184 */ 185 if ((cfdata_grf == NULL) || (did_consinit > 1)) { 186 if ((*view_cdevsw.d_open)(cf->cf_unit, 0, 0, NULL)) 187 return 0; 188 } 189 did_consinit = 2; 190 return 1; 191 } 192 193 /* 194 * attach: initialize the grf-structure and try to attach an ite to us. 195 * note : self is NULL during early console init. 196 */ 197 static void 198 grfccattach(device_t parent, device_t self, void *aux) 199 { 200 static struct grf_softc congrf; 201 static int first_attach = 1; 202 grf_auxp_t *grf_bus_auxp = aux; 203 grf_auxp_t grf_auxp; 204 struct grf_softc *sc; 205 int maj; 206 extern const struct cdevsw grf_cdevsw; 207 208 /* 209 * find our major device number 210 */ 211 maj = cdevsw_lookup_major(&grf_cdevsw); 212 213 /* 214 * Handle exception case: early console init 215 */ 216 if (self == NULL) { 217 struct device itedev; 218 219 memset(&itedev, 0, sizeof(itedev)); 220 itedev.dv_private = &congrf; 221 222 congrf.g_unit = cfdata_grf->cf_unit; 223 congrf.g_grfdev = makedev(maj, congrf.g_unit); 224 congrf.g_itedev = (dev_t)-1; 225 congrf.g_flags = GF_ALIVE; 226 congrf.g_mode = grf_mode; 227 congrf.g_conpri = grfcc_cnprobe(); 228 congrf.g_viewdev = congrf.g_unit; 229 grfcc_iteinit(&congrf); 230 grf_viewsync(&congrf); 231 232 /* Attach console ite */ 233 atari_config_found(cfdata_grf, &itedev, &congrf, grfccprint); 234 return; 235 } 236 237 sc = device_private(self); 238 sc->g_device = self; 239 sc->g_unit = device_unit(self); 240 grfsp[sc->g_unit] = sc; 241 242 if ((cfdata_grf != NULL) && (sc->g_unit == congrf.g_unit)) { 243 /* 244 * We inited earlier just copy the info, take care 245 * not to copy the device struct though. 246 */ 247 memcpy(&sc->g_display, &congrf.g_display, 248 (char *)&sc[1] - (char *)&sc->g_display); 249 } else { 250 sc->g_grfdev = makedev(maj, sc->g_unit); 251 sc->g_itedev = (dev_t)-1; 252 sc->g_flags = GF_ALIVE; 253 sc->g_mode = grf_mode; 254 sc->g_conpri = 0; 255 sc->g_viewdev = sc->g_unit; 256 grfcc_iteinit(sc); 257 grf_viewsync(sc); 258 } 259 260 printf(": width %d height %d", sc->g_display.gd_dwidth, 261 sc->g_display.gd_dheight); 262 if (sc->g_display.gd_colors == 2) 263 printf(" monochrome\n"); 264 else 265 printf(" colors %d\n", sc->g_display.gd_colors); 266 267 /* 268 * try and attach an ite 269 */ 270 config_found(self, sc /* XXX */, grfccprint); 271 272 /* 273 * If attaching the first unit, go ahead and 'find' the rest of us 274 */ 275 if (first_attach) { 276 first_attach = 0; 277 grf_auxp.from_bus_match = 0; 278 for (grf_auxp.unit=1; grf_auxp.unit < NGRFCC; grf_auxp.unit++) { 279 config_found(parent, &grf_auxp, grf_bus_auxp->busprint); 280 } 281 } 282 } 283 284 static int 285 grfccprint(void *aux, const char *pnp) 286 { 287 288 if (pnp) 289 aprint_normal("ite at %s", pnp); 290 return UNCONF; 291 } 292 293 /* 294 * called from grf_cc to return console priority 295 */ 296 int 297 grfcc_cnprobe(void) 298 { 299 return CN_INTERNAL; 300 } 301 /* 302 * called from grf_cc to init ite portion of 303 * grf_softc struct 304 */ 305 void 306 grfcc_iteinit(struct grf_softc *sc) 307 { 308 309 sc->g_itecursor = cursor32; 310 sc->g_iteputc = putc8; 311 sc->g_iteclear = clear8; 312 sc->g_itescroll = scroll8; 313 sc->g_iteinit = view_init; 314 sc->g_itedeinit = view_deinit; 315 } 316 317 static void 318 view_deinit(struct ite_softc *ip) 319 { 320 ip->flags &= ~ITE_INITED; 321 } 322 323 static void 324 view_init(register struct ite_softc *ip) 325 { 326 struct itewinsize wsz; 327 ipriv_t *cci; 328 329 if ((cci = ip->priv) != NULL) 330 return; 331 332 ip->itexx_ioctl = itecc_ioctl; 333 334 #if defined(KFONT_8X8) 335 ip->font = font_info_8x8; 336 #else 337 ip->font = font_info_8x16; 338 #endif 339 340 /* Find the correct set of rendering routines for this font. */ 341 if (ip->font.width != 8) 342 panic("kernel font size not supported"); 343 344 if (!atari_realconfig) 345 ip->priv = cci = &con_ipriv; 346 else 347 ip->priv = cci = malloc(sizeof(*cci), M_DEVBUF, M_WAITOK); 348 if (cci == NULL) 349 panic("No memory for ite-view"); 350 memset(cci, 0, sizeof(*cci)); 351 352 cci->cursor_opt = 0; 353 cci->row_ptr = NULL; 354 cci->column_offset = NULL; 355 356 wsz.x = ite_default_x; 357 wsz.y = ite_default_y; 358 wsz.width = ite_default_width; 359 wsz.height = ite_default_height; 360 wsz.depth = ite_default_depth; 361 362 ite_newsize (ip, &wsz); 363 364 /* 365 * Only console will be turned on by default.. 366 */ 367 if (ip->flags & ITE_ISCONS) 368 ip->grf->g_mode(ip->grf, GM_GRFON, NULL, 0, 0); 369 } 370 371 static int 372 ite_newsize(struct ite_softc *ip, struct itewinsize *winsz) 373 { 374 struct view_size vs; 375 ipriv_t *cci = ip->priv; 376 u_long i, j; 377 int error = 0; 378 view_t *view; 379 extern const struct cdevsw view_cdevsw; 380 381 vs.x = winsz->x; 382 vs.y = winsz->y; 383 vs.width = winsz->width; 384 vs.height = winsz->height; 385 vs.depth = winsz->depth; 386 387 error = (*view_cdevsw.d_ioctl)(ip->grf->g_viewdev, VIOCSSIZE, 388 (void *)&vs, 0, NOLWP); 389 view = viewview(ip->grf->g_viewdev); 390 391 /* 392 * Reinitialize our structs 393 */ 394 ip->cols = view->display.width / ip->font.width; 395 ip->rows = view->display.height / ip->font.height; 396 397 /* 398 * save new values so that future opens use them 399 * this may not be correct when we implement Virtual Consoles 400 */ 401 ite_default_height = view->display.height; 402 ite_default_width = view->display.width; 403 ite_default_x = view->display.x; 404 ite_default_y = view->display.y; 405 ite_default_depth = view->bitmap->depth; 406 407 if (cci->row_ptr && (cci->row_ptr != con_rows)) { 408 free(cci->row_ptr, M_DEVBUF); 409 cci->row_ptr = NULL; 410 } 411 if (cci->column_offset && (cci->column_offset != con_columns)) { 412 free(cci->column_offset, M_DEVBUF); 413 cci->column_offset = NULL; 414 } 415 416 if (!atari_realconfig) { 417 cci->row_ptr = con_rows; 418 cci->column_offset = con_columns; 419 } else { 420 cci->row_ptr = malloc(sizeof(u_char *) * ip->rows, 421 M_DEVBUF, M_NOWAIT); 422 cci->column_offset = malloc(sizeof(u_int) * ip->cols, 423 M_DEVBUF, M_NOWAIT); 424 } 425 426 if (!cci->row_ptr || !cci->column_offset) 427 panic("No memory for ite-view"); 428 429 cci->width = view->bitmap->bytes_per_row << 3; 430 cci->underline = ip->font.baseline + 1; 431 cci->row_offset = view->bitmap->bytes_per_row; 432 cci->ft_x = ip->font.width; 433 cci->ft_y = ip->font.height; 434 cci->row_bytes = cci->row_offset * cci->ft_y; 435 cci->row_ptr[0] = view->bitmap->plane; 436 for (i = 1; i < ip->rows; i++) 437 cci->row_ptr[i] = cci->row_ptr[i - 1] + cci->row_bytes; 438 439 /* 440 * Initialize the column offsets to point at the correct location 441 * in the first plane. This definitely assumes a font width of 8! 442 */ 443 j = view->bitmap->depth * 2; 444 cci->column_offset[0] = 0; 445 for (i = 1; i < ip->cols; i++) 446 cci->column_offset[i] = ((i >> 1) * j) + (i & 1); 447 448 /* initialize the font cell pointers */ 449 cci->font_cell[ip->font.font_lo] = ip->font.font_p; 450 for (i = ip->font.font_lo + 1; i <= ip->font.font_hi; i++) 451 cci->font_cell[i] = cci->font_cell[i - 1] + ip->font.height; 452 453 return error; 454 } 455 456 int 457 itecc_ioctl(struct ite_softc *ip, u_long cmd, void * addr, int flag, 458 struct lwp *l) 459 { 460 struct winsize ws; 461 struct itewinsize *is; 462 int error = 0; 463 view_t *view = viewview(ip->grf->g_viewdev); 464 extern const struct cdevsw ite_cdevsw; 465 extern const struct cdevsw view_cdevsw; 466 467 switch (cmd) { 468 case ITEIOCSWINSZ: 469 is = (struct itewinsize *)addr; 470 471 if (ite_newsize(ip, is)) 472 error = ENOMEM; 473 else { 474 view = viewview(ip->grf->g_viewdev); 475 ws.ws_row = ip->rows; 476 ws.ws_col = ip->cols; 477 ws.ws_xpixel = view->display.width; 478 ws.ws_ypixel = view->display.height; 479 ite_reset(ip); 480 /* 481 * XXX tell tty about the change 482 * XXX this is messy, but works 483 */ 484 (*ite_cdevsw.d_ioctl)(ip->grf->g_itedev, TIOCSWINSZ, 485 (void *)&ws, 0, l); 486 } 487 break; 488 case VIOCSCMAP: 489 case VIOCGCMAP: 490 /* 491 * XXX watchout for that NOLWP. its not really the kernel 492 * XXX talking these two commands don't use the proc pointer 493 * XXX though. 494 */ 495 error = (*view_cdevsw.d_ioctl)(ip->grf->g_viewdev, cmd, addr, 496 flag, NOLWP); 497 break; 498 default: 499 error = EPASSTHROUGH; 500 break; 501 } 502 return error; 503 } 504 505 static void 506 cursor32(struct ite_softc *ip, int flag) 507 { 508 int cend; 509 u_char *pl; 510 ipriv_t *cci; 511 512 cci = ip->priv; 513 514 if (flag == END_CURSOROPT) 515 cci->cursor_opt--; 516 else if (flag == START_CURSOROPT) { 517 if (!cci->cursor_opt) 518 cursor32(ip, ERASE_CURSOR); 519 cci->cursor_opt++; 520 return; /* if we are already opted. */ 521 } 522 523 if (cci->cursor_opt) 524 return; /* if we are still nested. */ 525 /* else we draw the cursor. */ 526 527 if (flag != DRAW_CURSOR && flag != END_CURSOROPT) { 528 /* 529 * erase the cursor 530 */ 531 cend = ip->font.height - 1; 532 pl = cci->column_offset[ip->cursorx] 533 + cci->row_ptr[ip->cursory]; 534 __asm volatile 535 ("1: notb %0@ ; addaw %4,%0\n\t" 536 "dbra %1,1b" 537 : "=a" (pl), "=d" (cend) 538 : "0" (pl), "1" (cend), 539 "d" (cci->row_offset) 540 ); 541 } 542 543 if (flag != DRAW_CURSOR && flag != MOVE_CURSOR && flag != END_CURSOROPT) 544 return; 545 546 /* 547 * draw the cursor 548 */ 549 cend = uimin(ip->curx, ip->cols - 1); 550 if (flag == DRAW_CURSOR 551 && ip->cursorx == cend && ip->cursory == ip->cury) 552 return; 553 ip->cursorx = cend; 554 ip->cursory = ip->cury; 555 cend = ip->font.height - 1; 556 pl = cci->column_offset[ip->cursorx] 557 + cci->row_ptr[ip->cursory]; 558 559 __asm volatile 560 ("1: notb %0@ ; addaw %4,%0\n\t" 561 "dbra %1,1b" 562 : "=a" (pl), "=d" (cend) 563 : "0" (pl), "1" (cend), 564 "d" (cci->row_offset) 565 ); 566 } 567 568 static void 569 putc8(struct ite_softc *ip, int c, int dy, int dx, int mode) 570 { 571 ipriv_t *cci = (ipriv_t *)ip->priv; 572 u_char *pl = cci->column_offset[dx] + cci->row_ptr[dy]; 573 u_int fh = cci->ft_y; 574 u_int ro = cci->row_offset; 575 u_char eor_mask; 576 u_char bl, tmp, ul; 577 u_char *ft; 578 579 if (c < ip->font.font_lo || c > ip->font.font_hi) 580 return; 581 582 ft = cci->font_cell[c]; 583 584 if (!mode) { 585 while (fh--) { 586 *pl = *ft++; pl += ro; 587 } 588 return; 589 } 590 591 eor_mask = (mode & ATTR_INV) ? 0xff : 0x00; 592 bl = (mode & ATTR_BOLD) ? 1 : 0; 593 ul = (mode & ATTR_UL) ? fh - cci->underline : fh; 594 for (; fh--; pl += ro) { 595 if (fh != ul) { 596 tmp = *ft++; 597 if (bl) 598 tmp |= (tmp >> 1); 599 *pl = tmp ^ eor_mask; 600 } else { 601 *pl = 0xff ^ eor_mask; 602 ft++; 603 } 604 } 605 } 606 607 static void 608 clear8(struct ite_softc *ip, int sy, int sx, int h, int w) 609 { 610 ipriv_t *cci = (ipriv_t *) ip->priv; 611 view_t *v = viewview(ip->grf->g_viewdev); 612 bmap_t *bm = v->bitmap; 613 614 if ((sx == 0) && (w == ip->cols)) { 615 /* common case: clearing whole lines */ 616 while (h--) { 617 int i; 618 u_char *ptr = cci->row_ptr[sy]; 619 for (i = 0; i < ip->font.height; i++) { 620 memset(ptr, 0, bm->bytes_per_row); 621 ptr += bm->bytes_per_row; 622 } 623 sy++; 624 } 625 } else { 626 /* 627 * clearing only part of a line 628 * XXX could be optimized MUCH better, but is it worth the 629 * trouble? 630 */ 631 632 int i; 633 u_char *pls, *ple; 634 635 pls = cci->row_ptr[sy]; 636 ple = pls + cci->column_offset[sx + w - 1]; 637 pls = pls + cci->column_offset[sx]; 638 639 for (i = ((ip->font.height) * h) - 1; i >= 0; i--) { 640 u_char *p = pls; 641 while (p <= ple) 642 *p++ = 0; 643 pls += bm->bytes_per_row; 644 ple += bm->bytes_per_row; 645 } 646 } 647 } 648 649 /* Note: sx is only relevant for SCROLL_LEFT or SCROLL_RIGHT. */ 650 static void 651 scroll8(register struct ite_softc *ip, register int sy, int sx, int count, 652 int dir) 653 { 654 bmap_t *bm = viewview(ip->grf->g_viewdev)->bitmap; 655 u_char *pl = ((ipriv_t *)ip->priv)->row_ptr[sy]; 656 657 if (dir == SCROLL_UP) { 658 int dy = sy - count; 659 660 cursor32(ip, ERASE_CURSOR); 661 scrollbmap(bm, 0, dy * ip->font.height, bm->bytes_per_row >> 3, 662 (ip->bottom_margin - dy + 1) * ip->font.height, 663 0, -(count * ip->font.height)); 664 } else if (dir == SCROLL_DOWN) { 665 cursor32(ip, ERASE_CURSOR); 666 scrollbmap(bm, 0, sy * ip->font.height, bm->bytes_per_row >> 3, 667 (ip->bottom_margin - sy + 1) * ip->font.height, 668 0, count * ip->font.height); 669 } else if (dir == SCROLL_RIGHT) { 670 int sofs = (ip->cols - count) * ip->font.width; 671 int dofs = (ip->cols) * ip->font.width; 672 int i, j; 673 674 cursor32(ip, ERASE_CURSOR); 675 for (j = ip->font.height - 1; j >= 0; j--) { 676 int sofs2 = sofs, dofs2 = dofs; 677 for (i = (ip->cols - (sx + count)) - 1; i >= 0; i--) { 678 int t; 679 sofs2 -= ip->font.width; 680 dofs2 -= ip->font.width; 681 __asm("bfextu %1@{%2:%3}, %0" : "=d" (t) 682 : "a" (pl), "d" (sofs2), 683 "d" (ip->font.width)); 684 __asm("bfins %3, %0@{%1:%2}" : 685 : "a" (pl), "d" (dofs2), 686 "d" (ip->font.width), "d" (t)); 687 } 688 pl += bm->bytes_per_row; 689 } 690 } else { /* SCROLL_LEFT */ 691 int sofs = (sx) * ip->font.width; 692 int dofs = (sx - count) * ip->font.width; 693 int i, j; 694 695 cursor32(ip, ERASE_CURSOR); 696 for (j = ip->font.height - 1; j >= 0; j--) { 697 int sofs2 = sofs, dofs2 = dofs; 698 for (i = (ip->cols - sx) - 1; i >= 0; i--) { 699 int t; 700 701 __asm("bfextu %1@{%2:%3}, %0" : "=d" (t) 702 : "a" (pl), "d" (sofs2), 703 "d" (ip->font.width)); 704 __asm("bfins %3, %0@{%1:%2}" : 705 : "a" (pl), "d" (dofs2), 706 "d" (ip->font.width), "d" (t)); 707 sofs2 += ip->font.width; 708 dofs2 += ip->font.width; 709 } 710 pl += bm->bytes_per_row; 711 } 712 } 713 } 714 715 static void 716 scrollbmap (bmap_t *bm, u_short x, u_short y, u_short width, u_short height, 717 short dx, short dy) 718 { 719 u_short lwpr = bm->bytes_per_row >> 2; 720 721 if (dx) { 722 /* FIX: */ 723 panic ("delta x not supported in scroll bitmap yet."); 724 } 725 726 if (dy == 0) { 727 return; 728 } 729 if (dy > 0) { 730 u_long *pl = (u_long *)bm->plane; 731 u_long *src_y = pl + (lwpr * y); 732 u_long *dest_y = pl + (lwpr * (y + dy)); 733 u_long count = lwpr * (height - dy); 734 u_long *clr_y = src_y; 735 u_long clr_count = dest_y - src_y; 736 u_long bc, cbc; 737 738 src_y += count - 1; 739 dest_y += count - 1; 740 741 bc = count >> 4; 742 count &= 0xf; 743 744 while (bc--) { 745 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 746 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 747 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 748 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 749 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 750 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 751 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 752 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 753 } 754 while (count--) 755 *dest_y-- = *src_y--; 756 757 cbc = clr_count >> 4; 758 clr_count &= 0xf; 759 760 while (cbc--) { 761 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 762 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 763 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 764 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 765 } 766 while (clr_count--) 767 *clr_y++ = 0; 768 } else { 769 u_long *pl = (u_long *)bm->plane; 770 u_long *src_y = pl + (lwpr * (y - dy)); 771 u_long *dest_y = pl + (lwpr * y); 772 long count = lwpr * (height + dy); 773 u_long *clr_y = dest_y + count; 774 u_long clr_count = src_y - dest_y; 775 u_long bc, cbc; 776 777 bc = count >> 4; 778 count &= 0xf; 779 780 while (bc--) { 781 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 782 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 783 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 784 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 785 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 786 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 787 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 788 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 789 } 790 while (count--) 791 *dest_y++ = *src_y++; 792 793 cbc = clr_count >> 4; 794 clr_count &= 0xf; 795 796 while (cbc--) { 797 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 798 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 799 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 800 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 801 } 802 while (clr_count--) 803 *clr_y++ = 0; 804 } 805 } 806
Indexes created Sat Sep 27 14:09:57 GMT 2025