ite_cc.c revision 1.13
1 /* $NetBSD: ite_cc.c,v 1.13 1997/07/15 06:48:05 leo 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/param.h> 35 #include <sys/conf.h> 36 #include <sys/proc.h> 37 #include <sys/ioctl.h> 38 #include <sys/tty.h> 39 #include <sys/systm.h> 40 #include <sys/queue.h> 41 #include <sys/termios.h> 42 #include <sys/malloc.h> 43 #include <sys/device.h> 44 #include <dev/cons.h> 45 #include <machine/cpu.h> 46 #include <atari/atari/device.h> 47 #include <atari/dev/itevar.h> 48 #include <atari/dev/iteioctl.h> 49 #include <atari/dev/grfioctl.h> 50 #include <atari/dev/grfabs_reg.h> 51 #include <atari/dev/grfvar.h> 52 #include <atari/dev/font.h> 53 #include <atari/dev/viewioctl.h> 54 #include <atari/dev/viewvar.h> 55 56 #include "grfcc.h" 57 58 /* 59 * This is what ip->priv points to; 60 * it contains local variables for custom-chip ites. 61 */ 62 struct ite_priv { 63 u_char **row_ptr; /* array of pointers into the bitmap */ 64 u_long row_bytes; 65 u_long cursor_opt; 66 u_short *column_offset; /* array of offsets for columns */ 67 u_int row_offset; /* the row offset */ 68 u_short width; /* the bitmap width */ 69 u_short underline; /* where the underline goes */ 70 u_short ft_x; /* the font width */ 71 u_short ft_y; /* the font height */ 72 u_char *font_cell[256];/* the font pointer */ 73 }; 74 typedef struct ite_priv ipriv_t; 75 76 /* 77 * We need the following space to get an ite-console setup before 78 * the VM-system is brought up. We setup for a 1280x960 monitor with 79 * an 8x8 font. 80 */ 81 #define CONS_MAXROW 120 /* Max. number of rows on console */ 82 #define CONS_MAXCOL 160 /* Max. number of columns on console */ 83 static u_short con_columns[CONS_MAXCOL]; 84 static u_char *con_rows[CONS_MAXROW]; 85 static ipriv_t con_ipriv; 86 87 extern font_info font_info_8x8; 88 extern font_info font_info_8x16; 89 90 static void view_init __P((struct ite_softc *)); 91 static void view_deinit __P((struct ite_softc *)); 92 static int itecc_ioctl __P((struct ite_softc *, u_long, caddr_t, int, 93 struct proc *)); 94 static int ite_newsize __P((struct ite_softc *, struct itewinsize *)); 95 static void cursor32 __P((struct ite_softc *, int)); 96 static void putc8 __P((struct ite_softc *, int, int, int, int)); 97 static void clear8 __P((struct ite_softc *, int, int, int, int)); 98 static void scroll8 __P((struct ite_softc *, int, int, int, int)); 99 static void scrollbmap __P((bmap_t *, u_short, u_short, u_short, u_short, 100 short, short)); 101 102 /* 103 * Patchable 104 */ 105 int ite_default_x = 0; /* def leftedge offset */ 106 int ite_default_y = 0; /* def topedge offset */ 107 int ite_default_width = 640; /* def width */ 108 int ite_default_depth = 1; /* def depth */ 109 int ite_default_height = 400; /* def height */ 110 111 /* 112 * grfcc config stuff 113 */ 114 void grfccattach __P((struct device *, struct device *, void *)); 115 int grfccmatch __P((struct device *, struct cfdata *, void *)); 116 int grfccprint __P((void *, const char *)); 117 118 struct cfattach grfcc_ca = { 119 sizeof(struct grf_softc), grfccmatch, grfccattach 120 }; 121 122 struct cfdriver grfcc_cd = { 123 NULL, "grfcc", DV_DULL 124 }; 125 126 /* 127 * only used in console init. 128 */ 129 static struct cfdata *cfdata_grf = NULL; 130 131 /* 132 * Probe functions we can use: 133 */ 134 #ifdef TT_VIDEO 135 void tt_probe_video __P((MODES *)); 136 #endif /* TT_VIDEO */ 137 #ifdef FALCON_VIDEO 138 void falcon_probe_video __P((MODES *)); 139 #endif /* FALCON_VIDEO */ 140 141 int 142 grfccmatch(pdp, cfp, auxp) 143 struct device *pdp; 144 struct cfdata *cfp; 145 void *auxp; 146 { 147 static int must_probe = 1; 148 grf_auxp_t *grf_auxp = auxp; 149 150 if (must_probe) { 151 /* 152 * Check if the layers we depend on exist 153 */ 154 if (!(machineid & (ATARI_TT|ATARI_FALCON))) 155 return (0); 156 #ifdef TT_VIDEO 157 if ((machineid & ATARI_TT) && !grfabs_probe(&tt_probe_video)) 158 return (0); 159 #endif /* TT_VIDEO */ 160 #ifdef FALCON_VIDEO 161 if ((machineid & ATARI_FALCON) 162 && !grfabs_probe(&falcon_probe_video)) 163 return (0); 164 #endif /* FALCON_VIDEO */ 165 166 viewprobe(); 167 must_probe = 0; 168 } 169 170 if (atari_realconfig == 0) { 171 /* 172 * Early console init. Only match unit 0. 173 */ 174 if (cfp->cf_unit != 0) 175 return(0); 176 if (viewopen(0, 0, 0, NULL)) 177 return(0); 178 cfdata_grf = cfp; 179 return (1); 180 } 181 182 /* 183 * Normal config. When we are called directly from the grfbus, 184 * we only match unit 0. The attach function will call us for 185 * the other configured units. 186 */ 187 if (grf_auxp->from_bus_match && (cfp->cf_unit != 0)) 188 return (0); 189 190 if (!grf_auxp->from_bus_match && (grf_auxp->unit != cfp->cf_unit)) 191 return (0); 192 193 /* 194 * Final constraint: each grf needs a view.... 195 */ 196 if((cfdata_grf == NULL) || (cfp->cf_unit != 0)) { 197 if(viewopen(cfp->cf_unit, 0, 0, NULL)) 198 return(0); 199 } 200 return(1); 201 } 202 203 /* 204 * attach: initialize the grf-structure and try to attach an ite to us. 205 * note : dp is NULL during early console init. 206 */ 207 void 208 grfccattach(pdp, dp, auxp) 209 struct device *pdp, *dp; 210 void *auxp; 211 { 212 static struct grf_softc congrf; 213 grf_auxp_t *grf_bus_auxp = auxp; 214 grf_auxp_t grf_auxp; 215 struct grf_softc *gp; 216 int maj; 217 218 /* 219 * find our major device number 220 */ 221 for(maj = 0; maj < nchrdev; maj++) 222 if (cdevsw[maj].d_open == grfopen) 223 break; 224 225 /* 226 * Handle exeption case: early console init 227 */ 228 if(dp == NULL) { 229 congrf.g_unit = 0; 230 congrf.g_itedev = (dev_t)-1; 231 congrf.g_grfdev = makedev(maj, 0); 232 congrf.g_flags = GF_ALIVE; 233 congrf.g_mode = grf_mode; 234 congrf.g_conpri = grfcc_cnprobe(); 235 congrf.g_viewdev = congrf.g_unit; 236 grfcc_iteinit(&congrf); 237 grf_viewsync(&congrf); 238 239 /* Attach console ite */ 240 atari_config_found(cfdata_grf, NULL, &congrf, grfccprint); 241 return; 242 } 243 244 gp = (struct grf_softc *)dp; 245 gp->g_unit = gp->g_device.dv_unit; 246 grfsp[gp->g_unit] = gp; 247 248 if((cfdata_grf != NULL) && (gp->g_unit == 0)) { 249 /* 250 * We inited earlier just copy the info, take care 251 * not to copy the device struct though. 252 */ 253 bcopy(&congrf.g_display, &gp->g_display, 254 (char *)&gp[1] - (char *)&gp->g_display); 255 } 256 else { 257 gp->g_grfdev = makedev(maj, gp->g_unit); 258 gp->g_itedev = (dev_t)-1; 259 gp->g_flags = GF_ALIVE; 260 gp->g_mode = grf_mode; 261 gp->g_conpri = 0; 262 gp->g_viewdev = gp->g_unit; 263 grfcc_iteinit(gp); 264 grf_viewsync(gp); 265 } 266 267 printf(": width %d height %d", gp->g_display.gd_dwidth, 268 gp->g_display.gd_dheight); 269 if(gp->g_display.gd_colors == 2) 270 printf(" monochrome\n"); 271 else printf(" colors %d\n", gp->g_display.gd_colors); 272 273 /* 274 * try and attach an ite 275 */ 276 config_found(dp, gp, grfccprint); 277 278 /* 279 * If attaching unit 0, go ahead and 'find' the rest of us 280 */ 281 if (gp->g_unit == 0) { 282 grf_auxp.from_bus_match = 0; 283 for (grf_auxp.unit=1; grf_auxp.unit < NGRFCC; grf_auxp.unit++) { 284 config_found(pdp, (void*)&grf_auxp, grf_bus_auxp->busprint); 285 } 286 } 287 } 288 289 int 290 grfccprint(auxp, pnp) 291 void *auxp; 292 const char *pnp; 293 { 294 if(pnp) 295 printf("ite at %s", pnp); 296 return(UNCONF); 297 } 298 299 /* 300 * called from grf_cc to return console priority 301 */ 302 int 303 grfcc_cnprobe() 304 { 305 return(CN_INTERNAL); 306 } 307 /* 308 * called from grf_cc to init ite portion of 309 * grf_softc struct 310 */ 311 void 312 grfcc_iteinit(gp) 313 struct grf_softc *gp; 314 { 315 316 gp->g_itecursor = cursor32; 317 gp->g_iteputc = putc8; 318 gp->g_iteclear = clear8; 319 gp->g_itescroll = scroll8; 320 gp->g_iteinit = view_init; 321 gp->g_itedeinit = view_deinit; 322 } 323 324 static void 325 view_deinit(ip) 326 struct ite_softc *ip; 327 { 328 ip->flags &= ~ITE_INITED; 329 } 330 331 static void 332 view_init(ip) 333 register struct ite_softc *ip; 334 { 335 struct itewinsize wsz; 336 ipriv_t *cci; 337 338 if((cci = ip->priv) != NULL) 339 return; 340 341 ip->itexx_ioctl = itecc_ioctl; 342 343 #if defined(KFONT_8X8) 344 ip->font = font_info_8x8; 345 #else 346 ip->font = font_info_8x16; 347 #endif 348 349 /* Find the correct set of rendering routines for this font. */ 350 if(ip->font.width != 8) 351 panic("kernel font size not supported"); 352 353 if(!atari_realconfig) 354 ip->priv = cci = &con_ipriv; 355 else ip->priv = cci = (ipriv_t*)malloc(sizeof(*cci), M_DEVBUF,M_WAITOK); 356 if(cci == NULL) 357 panic("No memory for ite-view"); 358 bzero(cci, sizeof(*cci)); 359 360 cci->cursor_opt = 0; 361 cci->row_ptr = NULL; 362 cci->column_offset = NULL; 363 364 wsz.x = ite_default_x; 365 wsz.y = ite_default_y; 366 wsz.width = ite_default_width; 367 wsz.height = ite_default_height; 368 wsz.depth = ite_default_depth; 369 370 ite_newsize (ip, &wsz); 371 372 /* 373 * Only console will be turned on by default.. 374 */ 375 if(ip->flags & ITE_ISCONS) 376 ip->grf->g_mode(ip->grf, GM_GRFON, NULL, 0, 0); 377 } 378 379 static int 380 ite_newsize(ip, winsz) 381 struct ite_softc *ip; 382 struct itewinsize *winsz; 383 { 384 struct view_size vs; 385 ipriv_t *cci = ip->priv; 386 u_long i, j; 387 int error = 0; 388 view_t *view; 389 390 vs.x = winsz->x; 391 vs.y = winsz->y; 392 vs.width = winsz->width; 393 vs.height = winsz->height; 394 vs.depth = winsz->depth; 395 396 error = viewioctl(ip->grf->g_viewdev, VIOCSSIZE, (caddr_t)&vs, 0, 397 NOPROC); 398 view = viewview(ip->grf->g_viewdev); 399 400 /* 401 * Reinitialize our structs 402 */ 403 ip->cols = view->display.width / ip->font.width; 404 ip->rows = view->display.height / ip->font.height; 405 406 /* 407 * save new values so that future opens use them 408 * this may not be correct when we implement Virtual Consoles 409 */ 410 ite_default_height = view->display.height; 411 ite_default_width = view->display.width; 412 ite_default_x = view->display.x; 413 ite_default_y = view->display.y; 414 ite_default_depth = view->bitmap->depth; 415 416 if(cci->row_ptr && (cci->row_ptr != con_rows)) { 417 free(cci->row_ptr, M_DEVBUF); 418 cci->row_ptr = NULL; 419 } 420 if(cci->column_offset && (cci->column_offset != con_columns)) { 421 free(cci->column_offset, M_DEVBUF); 422 cci->column_offset = NULL; 423 } 424 425 if(!atari_realconfig) { 426 cci->row_ptr = con_rows; 427 cci->column_offset = con_columns; 428 } 429 else { 430 cci->row_ptr = malloc(sizeof(u_char *) * ip->rows,M_DEVBUF,M_NOWAIT); 431 cci->column_offset = malloc(sizeof(u_int)*ip->cols,M_DEVBUF,M_NOWAIT); 432 } 433 434 if(!cci->row_ptr || !cci->column_offset) 435 panic("No memory for ite-view"); 436 437 cci->width = view->bitmap->bytes_per_row << 3; 438 cci->underline = ip->font.baseline + 1; 439 cci->row_offset = view->bitmap->bytes_per_row; 440 cci->ft_x = ip->font.width; 441 cci->ft_y = ip->font.height; 442 cci->row_bytes = cci->row_offset * cci->ft_y; 443 cci->row_ptr[0] = view->bitmap->plane; 444 for(i = 1; i < ip->rows; i++) 445 cci->row_ptr[i] = cci->row_ptr[i-1] + cci->row_bytes; 446 447 /* 448 * Initialize the column offsets to point at the correct location 449 * in the first plane. This definitely assumes a font width of 8! 450 */ 451 j = view->bitmap->depth * 2; 452 cci->column_offset[0] = 0; 453 for(i = 1; i < ip->cols; i++) 454 cci->column_offset[i] = ((i >> 1) * j) + (i & 1); 455 456 /* initialize the font cell pointers */ 457 cci->font_cell[ip->font.font_lo] = ip->font.font_p; 458 for(i = ip->font.font_lo+1; i <= ip->font.font_hi; i++) 459 cci->font_cell[i] = cci->font_cell[i-1] + ip->font.height; 460 461 return(error); 462 } 463 464 int 465 itecc_ioctl(ip, cmd, addr, flag, p) 466 struct ite_softc *ip; 467 u_long cmd; 468 caddr_t addr; 469 int flag; 470 struct proc *p; 471 { 472 struct winsize ws; 473 struct itewinsize *is; 474 int error = 0; 475 view_t *view = viewview(ip->grf->g_viewdev); 476 477 switch (cmd) { 478 case ITEIOCSWINSZ: 479 is = (struct itewinsize *)addr; 480 481 if(ite_newsize(ip, is)) 482 error = ENOMEM; 483 else { 484 view = viewview(ip->grf->g_viewdev); 485 ws.ws_row = ip->rows; 486 ws.ws_col = ip->cols; 487 ws.ws_xpixel = view->display.width; 488 ws.ws_ypixel = view->display.height; 489 ite_reset(ip); 490 /* 491 * XXX tell tty about the change 492 * XXX this is messy, but works 493 */ 494 iteioctl(ip->grf->g_itedev,TIOCSWINSZ,(caddr_t)&ws,0,p); 495 } 496 break; 497 case VIOCSCMAP: 498 case VIOCGCMAP: 499 /* 500 * XXX watchout for that NOPROC. its not really the kernel 501 * XXX talking these two commands don't use the proc pointer 502 * XXX though. 503 */ 504 error = viewioctl(ip->grf->g_viewdev, cmd, addr, flag, NOPROC); 505 break; 506 default: 507 error = -1; 508 break; 509 } 510 return (error); 511 } 512 513 static void 514 cursor32(struct ite_softc *ip, int flag) 515 { 516 int cend; 517 u_char *pl; 518 ipriv_t *cci; 519 520 cci = ip->priv; 521 522 if(flag == END_CURSOROPT) 523 cci->cursor_opt--; 524 else if(flag == START_CURSOROPT) { 525 if(!cci->cursor_opt) 526 cursor32(ip, ERASE_CURSOR); 527 cci->cursor_opt++; 528 return; /* if we are already opted. */ 529 } 530 531 if(cci->cursor_opt) 532 return; /* if we are still nested. */ 533 /* else we draw the cursor. */ 534 535 if(flag != DRAW_CURSOR && flag != END_CURSOROPT) { 536 /* 537 * erase the cursor 538 */ 539 cend = ip->font.height-1; 540 pl = cci->column_offset[ip->cursorx] 541 + cci->row_ptr[ip->cursory]; 542 __asm__ __volatile__ 543 ("1: notb %0@ ; addaw %4,%0\n\t" 544 "dbra %1,1b" 545 : "=a" (pl), "=d" (cend) 546 : "0" (pl), "1" (cend), 547 "d" (cci->row_offset) 548 ); 549 } 550 551 if(flag != DRAW_CURSOR && flag != MOVE_CURSOR && flag != END_CURSOROPT) 552 return; 553 554 /* 555 * draw the cursor 556 */ 557 cend = min(ip->curx, ip->cols-1); 558 if (flag == DRAW_CURSOR 559 && ip->cursorx == cend && ip->cursory == ip->cury) 560 return; 561 ip->cursorx = cend; 562 ip->cursory = ip->cury; 563 cend = ip->font.height-1; 564 pl = cci->column_offset[ip->cursorx] 565 + cci->row_ptr[ip->cursory]; 566 567 __asm__ __volatile__ 568 ("1: notb %0@ ; addaw %4,%0\n\t" 569 "dbra %1,1b" 570 : "=a" (pl), "=d" (cend) 571 : "0" (pl), "1" (cend), 572 "d" (cci->row_offset) 573 ); 574 } 575 576 static void 577 putc8(struct ite_softc *ip, int c, int dy, int dx, int mode) 578 { 579 register ipriv_t *cci = (ipriv_t *)ip->priv; 580 register u_char *pl = cci->column_offset[dx] + cci->row_ptr[dy]; 581 register u_int fh = cci->ft_y; 582 register u_int ro = cci->row_offset; 583 register u_char eor_mask; 584 register u_char bl, tmp, ul; 585 register u_char *ft; 586 587 if(c < ip->font.font_lo || c > ip->font.font_hi) 588 return; 589 590 ft = cci->font_cell[c]; 591 592 if(!mode) { 593 while(fh--) { 594 *pl = *ft++; pl += ro; 595 } 596 return; 597 } 598 599 eor_mask = (mode & ATTR_INV) ? 0xff : 0x00; 600 bl = (mode & ATTR_BOLD) ? 1 : 0; 601 ul = (mode & ATTR_UL) ? fh - cci->underline : fh; 602 for(; fh--; pl += ro) { 603 if(fh != ul) { 604 tmp = *ft++; 605 if(bl) 606 tmp |= (tmp >> 1); 607 *pl = tmp ^ eor_mask; 608 } 609 else { 610 *pl = 0xff ^ eor_mask; 611 ft++; 612 } 613 } 614 } 615 616 static void 617 clear8(struct ite_softc *ip, int sy, int sx, int h, int w) 618 { 619 ipriv_t *cci = (ipriv_t *) ip->priv; 620 view_t *v = viewview(ip->grf->g_viewdev); 621 bmap_t *bm = v->bitmap; 622 623 if((sx == 0) && (w == ip->cols)) { 624 /* common case: clearing whole lines */ 625 while (h--) { 626 int i; 627 u_char *ptr = cci->row_ptr[sy]; 628 for(i = 0; i < ip->font.height; i++) { 629 bzero(ptr, bm->bytes_per_row); 630 ptr += bm->bytes_per_row; 631 } 632 sy++; 633 } 634 } 635 else { 636 /* 637 * clearing only part of a line 638 * XXX could be optimized MUCH better, but is it worth the 639 * trouble? 640 */ 641 642 int i; 643 u_char *pls, *ple; 644 645 pls = cci->row_ptr[sy]; 646 ple = pls + cci->column_offset[sx + w-1]; 647 pls = pls + cci->column_offset[sx]; 648 649 for(i = ((ip->font.height) * h)-1; i >= 0; i--) { 650 u_char *p = pls; 651 while(p <= ple) 652 *p++ = 0; 653 pls += bm->bytes_per_row; 654 ple += bm->bytes_per_row; 655 } 656 } 657 } 658 659 /* Note: sx is only relevant for SCROLL_LEFT or SCROLL_RIGHT. */ 660 static void 661 scroll8(ip, sy, sx, count, dir) 662 register struct ite_softc *ip; 663 register int sy; 664 int dir, sx, count; 665 { 666 bmap_t *bm = viewview(ip->grf->g_viewdev)->bitmap; 667 u_char *pl = ((ipriv_t *)ip->priv)->row_ptr[sy]; 668 669 if(dir == SCROLL_UP) { 670 int dy = sy - count; 671 672 cursor32(ip, ERASE_CURSOR); 673 scrollbmap(bm, 0, dy*ip->font.height, bm->bytes_per_row >> 3, 674 (ip->bottom_margin-dy+1)*ip->font.height, 675 0, -(count*ip->font.height)); 676 } 677 else if(dir == SCROLL_DOWN) { 678 cursor32(ip, ERASE_CURSOR); 679 scrollbmap(bm, 0, sy*ip->font.height, bm->bytes_per_row >> 3, 680 (ip->bottom_margin-sy+1)*ip->font.height, 681 0, count*ip->font.height); 682 } 683 else if(dir == SCROLL_RIGHT) { 684 int sofs = (ip->cols - count) * ip->font.width; 685 int dofs = (ip->cols) * ip->font.width; 686 int i, j; 687 688 cursor32(ip, ERASE_CURSOR); 689 for(j = ip->font.height-1; j >= 0; j--) { 690 int sofs2 = sofs, dofs2 = dofs; 691 for (i = (ip->cols - (sx + count))-1; i >= 0; i--) { 692 int t; 693 sofs2 -= ip->font.width; 694 dofs2 -= ip->font.width; 695 asm("bfextu %1@{%2:%3},%0" : "=d" (t) 696 : "a" (pl), "d" (sofs2), "d" (ip->font.width)); 697 asm("bfins %3,%0@{%1:%2}" : 698 : "a" (pl), "d" (dofs2), "d" (ip->font.width), 699 "d" (t)); 700 } 701 pl += bm->bytes_per_row; 702 } 703 } 704 else { /* SCROLL_LEFT */ 705 int sofs = (sx) * ip->font.width; 706 int dofs = (sx - count) * ip->font.width; 707 int i, j; 708 709 cursor32(ip, ERASE_CURSOR); 710 for(j = ip->font.height-1; j >= 0; j--) { 711 int sofs2 = sofs, dofs2 = dofs; 712 for(i = (ip->cols - sx)-1; i >= 0; i--) { 713 int t; 714 715 asm("bfextu %1@{%2:%3},%0" : "=d" (t) 716 : "a" (pl), "d" (sofs2), "d" (ip->font.width)); 717 asm("bfins %3,%0@{%1:%2}" 718 : : "a" (pl), "d" (dofs2),"d" (ip->font.width), 719 "d" (t)); 720 sofs2 += ip->font.width; 721 dofs2 += ip->font.width; 722 } 723 pl += bm->bytes_per_row; 724 } 725 } 726 } 727 728 static void 729 scrollbmap (bmap_t *bm, u_short x, u_short y, u_short width, u_short height, short dx, short dy) 730 { 731 u_short lwpr = bm->bytes_per_row >> 2; 732 733 if(dx) { 734 /* FIX: */ panic ("delta x not supported in scroll bitmap yet."); 735 } 736 737 if(dy == 0) { 738 return; 739 } 740 if(dy > 0) { 741 u_long *pl = (u_long *)bm->plane; 742 u_long *src_y = pl + (lwpr*y); 743 u_long *dest_y = pl + (lwpr*(y+dy)); 744 u_long count = lwpr*(height-dy); 745 u_long *clr_y = src_y; 746 u_long clr_count = dest_y - src_y; 747 u_long bc, cbc; 748 749 src_y += count - 1; 750 dest_y += count - 1; 751 752 bc = count >> 4; 753 count &= 0xf; 754 755 while (bc--) { 756 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 757 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 758 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 759 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 760 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 761 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 762 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 763 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 764 } 765 while (count--) 766 *dest_y-- = *src_y--; 767 768 cbc = clr_count >> 4; 769 clr_count &= 0xf; 770 771 while (cbc--) { 772 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 773 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 774 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 775 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 776 } 777 while(clr_count--) 778 *clr_y++ = 0; 779 } 780 else { 781 u_long *pl = (u_long *)bm->plane; 782 u_long *src_y = pl + (lwpr*(y-dy)); 783 u_long *dest_y = pl + (lwpr*y); 784 long count = lwpr*(height + dy); 785 u_long *clr_y = dest_y + count; 786 u_long clr_count = src_y - dest_y; 787 u_long bc, cbc; 788 789 bc = count >> 4; 790 count &= 0xf; 791 792 while(bc--) { 793 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 794 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 795 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 796 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 797 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 798 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 799 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 800 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 801 } 802 while(count--) 803 *dest_y++ = *src_y++; 804 805 cbc = clr_count >> 4; 806 clr_count &= 0xf; 807 808 while (cbc--) { 809 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 810 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 811 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 812 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 813 } 814 while (clr_count--) 815 *clr_y++ = 0; 816 } 817 } 818
Indexes created Sat Sep 27 22:09:54 GMT 2025