hw/display/tcx.c

   1 /*
   2  * QEMU TCX Frame buffer
   3  *
   4  * Copyright (c) 2003-2005 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 #include "qemu-common.h"
  26 #include "ui/console.h"
  27 #include "ui/pixel_ops.h"
  28 #include "hw/loader.h"
  29 #include "hw/sysbus.h"
  30
  31 #define TCX_ROM_FILE "QEMU,tcx.bin"
  32 #define FCODE_MAX_ROM_SIZE 0x10000
  33
  34 #define MAXX 1024
  35 #define MAXY 768
  36 #define TCX_DAC_NREGS 16
  37 #define TCX_THC_NREGS_8  0x081c
  38 #define TCX_THC_NREGS_24 0x1000
  39 #define TCX_TEC_NREGS    0x1000
  40
  41 #define TYPE_TCX "SUNW,tcx"
  42 #define TCX(obj) OBJECT_CHECK(TCXState, (obj), TYPE_TCX)
  43
  44 typedef struct TCXState {
  45     SysBusDevice parent_obj;
  46
  47     QemuConsole *con;
  48     uint8_t *vram;
  49     uint32_t *vram24, *cplane;
  50     hwaddr prom_addr;
  51     MemoryRegion rom;
  52     MemoryRegion vram_mem;
  53     MemoryRegion vram_8bit;
  54     MemoryRegion vram_24bit;
  55     MemoryRegion vram_cplane;
  56     MemoryRegion dac;
  57     MemoryRegion tec;
  58     MemoryRegion thc24;
  59     MemoryRegion thc8;
  60     ram_addr_t vram24_offset, cplane_offset;
  61     uint32_t vram_size;
  62     uint32_t palette[256];
  63     uint8_t r[256], g[256], b[256];
  64     uint16_t width, height, depth;
  65     uint8_t dac_index, dac_state;
  66 } TCXState;
  67
  68 static void tcx_set_dirty(TCXState *s)
  69 {
  70     memory_region_set_dirty(&s->vram_mem, 0, MAXX * MAXY);
  71 }
  72
  73 static void tcx24_set_dirty(TCXState *s)
  74 {
  75     memory_region_set_dirty(&s->vram_mem, s->vram24_offset, MAXX * MAXY * 4);
  76     memory_region_set_dirty(&s->vram_mem, s->cplane_offset, MAXX * MAXY * 4);
  77 }
  78
  79 static void update_palette_entries(TCXState *s, int start, int end)
  80 {
  81     DisplaySurface *surface = qemu_console_surface(s->con);
  82     int i;
  83
  84     for (i = start; i < end; i++) {
  85         switch (surface_bits_per_pixel(surface)) {
  86         default:
  87         case 8:
  88             s->palette[i] = rgb_to_pixel8(s->r[i], s->g[i], s->b[i]);
  89             break;
  90         case 15:
  91             s->palette[i] = rgb_to_pixel15(s->r[i], s->g[i], s->b[i]);
  92             break;
  93         case 16:
  94             s->palette[i] = rgb_to_pixel16(s->r[i], s->g[i], s->b[i]);
  95             break;
  96         case 32:
  97             if (is_surface_bgr(surface)) {
  98                 s->palette[i] = rgb_to_pixel32bgr(s->r[i], s->g[i], s->b[i]);
  99             } else {
 100                 s->palette[i] = rgb_to_pixel32(s->r[i], s->g[i], s->b[i]);
 101             }
 102             break;
 103         }
 104     }
 105     if (s->depth == 24) {
 106         tcx24_set_dirty(s);
 107     } else {
 108         tcx_set_dirty(s);
 109     }
 110 }
 111
 112 static void tcx_draw_line32(TCXState *s1, uint8_t *d,
 113                             const uint8_t *s, int width)
 114 {
 115     int x;
 116     uint8_t val;
 117     uint32_t *p = (uint32_t *)d;
 118
 119     for(x = 0; x < width; x++) {
 120         val = *s++;
 121         *p++ = s1->palette[val];
 122     }
 123 }
 124
 125 static void tcx_draw_line16(TCXState *s1, uint8_t *d,
 126                             const uint8_t *s, int width)
 127 {
 128     int x;
 129     uint8_t val;
 130     uint16_t *p = (uint16_t *)d;
 131
 132     for(x = 0; x < width; x++) {
 133         val = *s++;
 134         *p++ = s1->palette[val];
 135     }
 136 }
 137
 138 static void tcx_draw_line8(TCXState *s1, uint8_t *d,
 139                            const uint8_t *s, int width)
 140 {
 141     int x;
 142     uint8_t val;
 143
 144     for(x = 0; x < width; x++) {
 145         val = *s++;
 146         *d++ = s1->palette[val];
 147     }
 148 }
 149
 150 /*
 151   XXX Could be much more optimal:
 152   * detect if line/page/whole screen is in 24 bit mode
 153   * if destination is also BGR, use memcpy
 154   */
 155 static inline void tcx24_draw_line32(TCXState *s1, uint8_t *d,
 156                                      const uint8_t *s, int width,
 157                                      const uint32_t *cplane,
 158                                      const uint32_t *s24)
 159 {
 160     DisplaySurface *surface = qemu_console_surface(s1->con);
 161     int x, bgr, r, g, b;
 162     uint8_t val, *p8;
 163     uint32_t *p = (uint32_t *)d;
 164     uint32_t dval;
 165
 166     bgr = is_surface_bgr(surface);
 167     for(x = 0; x < width; x++, s++, s24++) {
 168         if ((be32_to_cpu(*cplane++) & 0xff000000) == 0x03000000) {
 169             // 24-bit direct, BGR order
 170             p8 = (uint8_t *)s24;
 171             p8++;
 172             b = *p8++;
 173             g = *p8++;
 174             r = *p8;
 175             if (bgr)
 176                 dval = rgb_to_pixel32bgr(r, g, b);
 177             else
 178                 dval = rgb_to_pixel32(r, g, b);
 179         } else {
 180             val = *s;
 181             dval = s1->palette[val];
 182         }
 183         *p++ = dval;
 184     }
 185 }
 186
 187 static inline int check_dirty(TCXState *s, ram_addr_t page, ram_addr_t page24,
 188                               ram_addr_t cpage)
 189 {
 190     int ret;
 191
 192     ret = memory_region_get_dirty(&s->vram_mem, page, TARGET_PAGE_SIZE,
 193                                   DIRTY_MEMORY_VGA);
 194     ret |= memory_region_get_dirty(&s->vram_mem, page24, TARGET_PAGE_SIZE * 4,
 195                                    DIRTY_MEMORY_VGA);
 196     ret |= memory_region_get_dirty(&s->vram_mem, cpage, TARGET_PAGE_SIZE * 4,
 197                                    DIRTY_MEMORY_VGA);
 198     return ret;
 199 }
 200
 201 static inline void reset_dirty(TCXState *ts, ram_addr_t page_min,
 202                                ram_addr_t page_max, ram_addr_t page24,
 203                               ram_addr_t cpage)
 204 {
 205     memory_region_reset_dirty(&ts->vram_mem,
 206                               page_min,
 207                               (page_max - page_min) + TARGET_PAGE_SIZE,
 208                               DIRTY_MEMORY_VGA);
 209     memory_region_reset_dirty(&ts->vram_mem,
 210                               page24 + page_min * 4,
 211                               (page_max - page_min) * 4 + TARGET_PAGE_SIZE,
 212                               DIRTY_MEMORY_VGA);
 213     memory_region_reset_dirty(&ts->vram_mem,
 214                               cpage + page_min * 4,
 215                               (page_max - page_min) * 4 + TARGET_PAGE_SIZE,
 216                               DIRTY_MEMORY_VGA);
 217 }
 218
 219 /* Fixed line length 1024 allows us to do nice tricks not possible on
 220    VGA... */
 221 static void tcx_update_display(void *opaque)
 222 {
 223     TCXState *ts = opaque;
 224     DisplaySurface *surface = qemu_console_surface(ts->con);
 225     ram_addr_t page, page_min, page_max;
 226     int y, y_start, dd, ds;
 227     uint8_t *d, *s;
 228     void (*f)(TCXState *s1, uint8_t *dst, const uint8_t *src, int width);
 229
 230     if (surface_bits_per_pixel(surface) == 0) {
 231         return;
 232     }
 233
 234     page = 0;
 235     y_start = -1;
 236     page_min = -1;
 237     page_max = 0;
 238     d = surface_data(surface);
 239     s = ts->vram;
 240     dd = surface_stride(surface);
 241     ds = 1024;
 242
 243     switch (surface_bits_per_pixel(surface)) {
 244     case 32:
 245         f = tcx_draw_line32;
 246         break;
 247     case 15:
 248     case 16:
 249         f = tcx_draw_line16;
 250         break;
 251     default:
 252     case 8:
 253         f = tcx_draw_line8;
 254         break;
 255     case 0:
 256         return;
 257     }
 258
 259     for(y = 0; y < ts->height; y += 4, page += TARGET_PAGE_SIZE) {
 260         if (memory_region_get_dirty(&ts->vram_mem, page, TARGET_PAGE_SIZE,
 261                                     DIRTY_MEMORY_VGA)) {
 262             if (y_start < 0)
 263                 y_start = y;
 264             if (page < page_min)
 265                 page_min = page;
 266             if (page > page_max)
 267                 page_max = page;
 268             f(ts, d, s, ts->width);
 269             d += dd;
 270             s += ds;
 271             f(ts, d, s, ts->width);
 272             d += dd;
 273             s += ds;
 274             f(ts, d, s, ts->width);
 275             d += dd;
 276             s += ds;
 277             f(ts, d, s, ts->width);
 278             d += dd;
 279             s += ds;
 280         } else {
 281             if (y_start >= 0) {
 282                 /* flush to display */
 283                 dpy_gfx_update(ts->con, 0, y_start,
 284                                ts->width, y - y_start);
 285                 y_start = -1;
 286             }
 287             d += dd * 4;
 288             s += ds * 4;
 289         }
 290     }
 291     if (y_start >= 0) {
 292         /* flush to display */
 293         dpy_gfx_update(ts->con, 0, y_start,
 294                        ts->width, y - y_start);
 295     }
 296     /* reset modified pages */
 297     if (page_max >= page_min) {
 298         memory_region_reset_dirty(&ts->vram_mem,
 299                                   page_min,
 300                                   (page_max - page_min) + TARGET_PAGE_SIZE,
 301                                   DIRTY_MEMORY_VGA);
 302     }
 303 }
 304
 305 static void tcx24_update_display(void *opaque)
 306 {
 307     TCXState *ts = opaque;
 308     DisplaySurface *surface = qemu_console_surface(ts->con);
 309     ram_addr_t page, page_min, page_max, cpage, page24;
 310     int y, y_start, dd, ds;
 311     uint8_t *d, *s;
 312     uint32_t *cptr, *s24;
 313
 314     if (surface_bits_per_pixel(surface) != 32) {
 315             return;
 316     }
 317
 318     page = 0;
 319     page24 = ts->vram24_offset;
 320     cpage = ts->cplane_offset;
 321     y_start = -1;
 322     page_min = -1;
 323     page_max = 0;
 324     d = surface_data(surface);
 325     s = ts->vram;
 326     s24 = ts->vram24;
 327     cptr = ts->cplane;
 328     dd = surface_stride(surface);
 329     ds = 1024;
 330
 331     for(y = 0; y < ts->height; y += 4, page += TARGET_PAGE_SIZE,
 332             page24 += TARGET_PAGE_SIZE, cpage += TARGET_PAGE_SIZE) {
 333         if (check_dirty(ts, page, page24, cpage)) {
 334             if (y_start < 0)
 335                 y_start = y;
 336             if (page < page_min)
 337                 page_min = page;
 338             if (page > page_max)
 339                 page_max = page;
 340             tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
 341             d += dd;
 342             s += ds;
 343             cptr += ds;
 344             s24 += ds;
 345             tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
 346             d += dd;
 347             s += ds;
 348             cptr += ds;
 349             s24 += ds;
 350             tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
 351             d += dd;
 352             s += ds;
 353             cptr += ds;
 354             s24 += ds;
 355             tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
 356             d += dd;
 357             s += ds;
 358             cptr += ds;
 359             s24 += ds;
 360         } else {
 361             if (y_start >= 0) {
 362                 /* flush to display */
 363                 dpy_gfx_update(ts->con, 0, y_start,
 364                                ts->width, y - y_start);
 365                 y_start = -1;
 366             }
 367             d += dd * 4;
 368             s += ds * 4;
 369             cptr += ds * 4;
 370             s24 += ds * 4;
 371         }
 372     }
 373     if (y_start >= 0) {
 374         /* flush to display */
 375         dpy_gfx_update(ts->con, 0, y_start,
 376                        ts->width, y - y_start);
 377     }
 378     /* reset modified pages */
 379     if (page_max >= page_min) {
 380         reset_dirty(ts, page_min, page_max, page24, cpage);
 381     }
 382 }
 383
 384 static void tcx_invalidate_display(void *opaque)
 385 {
 386     TCXState *s = opaque;
 387
 388     tcx_set_dirty(s);
 389     qemu_console_resize(s->con, s->width, s->height);
 390 }
 391
 392 static void tcx24_invalidate_display(void *opaque)
 393 {
 394     TCXState *s = opaque;
 395
 396     tcx_set_dirty(s);
 397     tcx24_set_dirty(s);
 398     qemu_console_resize(s->con, s->width, s->height);
 399 }
 400
 401 static int vmstate_tcx_post_load(void *opaque, int version_id)
 402 {
 403     TCXState *s = opaque;
 404
 405     update_palette_entries(s, 0, 256);
 406     if (s->depth == 24) {
 407         tcx24_set_dirty(s);
 408     } else {
 409         tcx_set_dirty(s);
 410     }
 411
 412     return 0;
 413 }
 414
 415 static const VMStateDescription vmstate_tcx = {
 416     .name ="tcx",
 417     .version_id = 4,
 418     .minimum_version_id = 4,
 419     .minimum_version_id_old = 4,
 420     .post_load = vmstate_tcx_post_load,
 421     .fields      = (VMStateField []) {
 422         VMSTATE_UINT16(height, TCXState),
 423         VMSTATE_UINT16(width, TCXState),
 424         VMSTATE_UINT16(depth, TCXState),
 425         VMSTATE_BUFFER(r, TCXState),
 426         VMSTATE_BUFFER(g, TCXState),
 427         VMSTATE_BUFFER(b, TCXState),
 428         VMSTATE_UINT8(dac_index, TCXState),
 429         VMSTATE_UINT8(dac_state, TCXState),
 430         VMSTATE_END_OF_LIST()
 431     }
 432 };
 433
 434 static void tcx_reset(DeviceState *d)
 435 {
 436     TCXState *s = TCX(d);
 437
 438     /* Initialize palette */
 439     memset(s->r, 0, 256);
 440     memset(s->g, 0, 256);
 441     memset(s->b, 0, 256);
 442     s->r[255] = s->g[255] = s->b[255] = 255;
 443     update_palette_entries(s, 0, 256);
 444     memset(s->vram, 0, MAXX*MAXY);
 445     memory_region_reset_dirty(&s->vram_mem, 0, MAXX * MAXY * (1 + 4 + 4),
 446                               DIRTY_MEMORY_VGA);
 447     s->dac_index = 0;
 448     s->dac_state = 0;
 449 }
 450
 451 static uint64_t tcx_dac_readl(void *opaque, hwaddr addr,
 452                               unsigned size)
 453 {
 454     return 0;
 455 }
 456
 457 static void tcx_dac_writel(void *opaque, hwaddr addr, uint64_t val,
 458                            unsigned size)
 459 {
 460     TCXState *s = opaque;
 461
 462     switch (addr) {
 463     case 0:
 464         s->dac_index = val >> 24;
 465         s->dac_state = 0;
 466         break;
 467     case 4:
 468         switch (s->dac_state) {
 469         case 0:
 470             s->r[s->dac_index] = val >> 24;
 471             update_palette_entries(s, s->dac_index, s->dac_index + 1);
 472             s->dac_state++;
 473             break;
 474         case 1:
 475             s->g[s->dac_index] = val >> 24;
 476             update_palette_entries(s, s->dac_index, s->dac_index + 1);
 477             s->dac_state++;
 478             break;
 479         case 2:
 480             s->b[s->dac_index] = val >> 24;
 481             update_palette_entries(s, s->dac_index, s->dac_index + 1);
 482             s->dac_index = (s->dac_index + 1) & 255; // Index autoincrement
 483         default:
 484             s->dac_state = 0;
 485             break;
 486         }
 487         break;
 488     default:
 489         break;
 490     }
 491 }
 492
 493 static const MemoryRegionOps tcx_dac_ops = {
 494     .read = tcx_dac_readl,
 495     .write = tcx_dac_writel,
 496     .endianness = DEVICE_NATIVE_ENDIAN,
 497     .valid = {
 498         .min_access_size = 4,
 499         .max_access_size = 4,
 500     },
 501 };
 502
 503 static uint64_t dummy_readl(void *opaque, hwaddr addr,
 504                             unsigned size)
 505 {
 506     return 0;
 507 }
 508
 509 static void dummy_writel(void *opaque, hwaddr addr,
 510                          uint64_t val, unsigned size)
 511 {
 512 }
 513
 514 static const MemoryRegionOps dummy_ops = {
 515     .read = dummy_readl,
 516     .write = dummy_writel,
 517     .endianness = DEVICE_NATIVE_ENDIAN,
 518     .valid = {
 519         .min_access_size = 4,
 520         .max_access_size = 4,
 521     },
 522 };
 523
 524 static const GraphicHwOps tcx_ops = {
 525     .invalidate = tcx_invalidate_display,
 526     .gfx_update = tcx_update_display,
 527 };
 528
 529 static const GraphicHwOps tcx24_ops = {
 530     .invalidate = tcx24_invalidate_display,
 531     .gfx_update = tcx24_update_display,
 532 };
 533
 534 static int tcx_init1(SysBusDevice *dev)
 535 {
 536     TCXState *s = TCX(dev);
 537     ram_addr_t vram_offset = 0;
 538     int size, ret;
 539     uint8_t *vram_base;
 540     char *fcode_filename;
 541
 542     memory_region_init_ram(&s->vram_mem, OBJECT(s), "tcx.vram",
 543                            s->vram_size * (1 + 4 + 4));
 544     vmstate_register_ram_global(&s->vram_mem);
 545     vram_base = memory_region_get_ram_ptr(&s->vram_mem);
 546
 547     /* FCode ROM */
 548     memory_region_init_ram(&s->rom, NULL, "tcx.prom", FCODE_MAX_ROM_SIZE);
 549     vmstate_register_ram_global(&s->rom);
 550     memory_region_set_readonly(&s->rom, true);
 551     sysbus_init_mmio(dev, &s->rom);
 552
 553     fcode_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, TCX_ROM_FILE);
 554     if (fcode_filename) {
 555         ret = load_image_targphys(fcode_filename, s->prom_addr,
 556                                   FCODE_MAX_ROM_SIZE);
 557         if (ret < 0 || ret > FCODE_MAX_ROM_SIZE) {
 558             fprintf(stderr, "tcx: could not load prom '%s'\n", TCX_ROM_FILE);
 559             return -1;
 560         }
 561     }
 562
 563     /* 8-bit plane */
 564     s->vram = vram_base;
 565     size = s->vram_size;
 566     memory_region_init_alias(&s->vram_8bit, OBJECT(s), "tcx.vram.8bit",
 567                              &s->vram_mem, vram_offset, size);
 568     sysbus_init_mmio(dev, &s->vram_8bit);
 569     vram_offset += size;
 570     vram_base += size;
 571
 572     /* DAC */
 573     memory_region_init_io(&s->dac, OBJECT(s), &tcx_dac_ops, s,
 574                           "tcx.dac", TCX_DAC_NREGS);
 575     sysbus_init_mmio(dev, &s->dac);
 576
 577     /* TEC (dummy) */
 578     memory_region_init_io(&s->tec, OBJECT(s), &dummy_ops, s,
 579                           "tcx.tec", TCX_TEC_NREGS);
 580     sysbus_init_mmio(dev, &s->tec);
 581     /* THC: NetBSD writes here even with 8-bit display: dummy */
 582     memory_region_init_io(&s->thc24, OBJECT(s), &dummy_ops, s, "tcx.thc24",
 583                           TCX_THC_NREGS_24);
 584     sysbus_init_mmio(dev, &s->thc24);
 585
 586     if (s->depth == 24) {
 587         /* 24-bit plane */
 588         size = s->vram_size * 4;
 589         s->vram24 = (uint32_t *)vram_base;
 590         s->vram24_offset = vram_offset;
 591         memory_region_init_alias(&s->vram_24bit, OBJECT(s), "tcx.vram.24bit",
 592                                  &s->vram_mem, vram_offset, size);
 593         sysbus_init_mmio(dev, &s->vram_24bit);
 594         vram_offset += size;
 595         vram_base += size;
 596
 597         /* Control plane */
 598         size = s->vram_size * 4;
 599         s->cplane = (uint32_t *)vram_base;
 600         s->cplane_offset = vram_offset;
 601         memory_region_init_alias(&s->vram_cplane, OBJECT(s), "tcx.vram.cplane",
 602                                  &s->vram_mem, vram_offset, size);
 603         sysbus_init_mmio(dev, &s->vram_cplane);
 604
 605         s->con = graphic_console_init(DEVICE(dev), &tcx24_ops, s);
 606     } else {
 607         /* THC 8 bit (dummy) */
 608         memory_region_init_io(&s->thc8, OBJECT(s), &dummy_ops, s, "tcx.thc8",
 609                               TCX_THC_NREGS_8);
 610         sysbus_init_mmio(dev, &s->thc8);
 611
 612         s->con = graphic_console_init(DEVICE(dev), &tcx_ops, s);
 613     }
 614
 615     qemu_console_resize(s->con, s->width, s->height);
 616     return 0;
 617 }
 618
 619 static Property tcx_properties[] = {
 620     DEFINE_PROP_HEX32("vram_size", TCXState, vram_size, -1),
 621     DEFINE_PROP_UINT16("width",    TCXState, width,     -1),
 622     DEFINE_PROP_UINT16("height",   TCXState, height,    -1),
 623     DEFINE_PROP_UINT16("depth",    TCXState, depth,     -1),
 624     DEFINE_PROP_HEX64("prom_addr", TCXState, prom_addr, -1),
 625     DEFINE_PROP_END_OF_LIST(),
 626 };
 627
 628 static void tcx_class_init(ObjectClass *klass, void *data)
 629 {
 630     DeviceClass *dc = DEVICE_CLASS(klass);
 631     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 632
 633     k->init = tcx_init1;
 634     dc->reset = tcx_reset;
 635     dc->vmsd = &vmstate_tcx;
 636     dc->props = tcx_properties;
 637 }
 638
 639 static const TypeInfo tcx_info = {
 640     .name          = TYPE_TCX,
 641     .parent        = TYPE_SYS_BUS_DEVICE,
 642     .instance_size = sizeof(TCXState),
 643     .class_init    = tcx_class_init,
 644 };
 645
 646 static void tcx_register_types(void)
 647 {
 648     type_register_static(&tcx_info);
 649 }
 650
 651 type_init(tcx_register_types)