0a962c0276
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1281 c046a42c-6fe2-441c-8c8c-71466251a162
275 lines
6.4 KiB
C
275 lines
6.4 KiB
C
/*
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* QEMU Sun4m System Emulator
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*
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* Copyright (c) 2003-2004 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "vl.h"
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#define MAXX 1024
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#define MAXY 768
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/*
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* Proll uses only small part of display, we need to switch to full
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* display when we get linux framebuffer console or X11 running. For
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* now it's just slower and awkward.
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*/
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#if 1
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#define XSZ (8*80)
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#define YSZ (24*11)
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#define XOFF (MAXX-XSZ)
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#define YOFF (MAXY-YSZ)
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#else
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#define XSZ MAXX
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#define YSZ MAXY
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#define XOFF 0
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#define YOFF 0
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#endif
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typedef struct TCXState {
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uint32_t addr;
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DisplayState *ds;
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uint8_t *vram;
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unsigned long vram_offset;
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uint8_t r[256], g[256], b[256];
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} TCXState;
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static void tcx_draw_line32(TCXState *s1, uint8_t *d,
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const uint8_t *s, int width)
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{
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int x;
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uint8_t val;
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for(x = 0; x < width; x++) {
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val = *s++;
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*d++ = s1->r[val];
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*d++ = s1->g[val];
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*d++ = s1->b[val];
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d++;
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}
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}
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static void tcx_draw_line24(TCXState *s1, uint8_t *d,
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const uint8_t *s, int width)
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{
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int x;
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uint8_t val;
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for(x = 0; x < width; x++) {
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val = *s++;
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*d++ = s1->r[val];
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*d++ = s1->g[val];
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*d++ = s1->b[val];
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}
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}
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static void tcx_draw_line8(TCXState *s1, uint8_t *d,
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const uint8_t *s, int width)
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{
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int x;
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uint8_t val;
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for(x = 0; x < width; x++) {
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val = *s++;
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/* XXX translate between palettes? */
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*d++ = val;
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}
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}
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/* Fixed line length 1024 allows us to do nice tricks not possible on
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VGA... */
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void tcx_update_display(void *opaque)
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{
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TCXState *ts = opaque;
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uint32_t page;
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int y, page_min, page_max, y_start, dd, ds;
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uint8_t *d, *s;
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void (*f)(TCXState *s1, uint8_t *d, const uint8_t *s, int width);
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if (ts->ds->depth == 0)
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return;
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page = ts->vram_offset + YOFF*MAXX;
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y_start = -1;
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page_min = 0x7fffffff;
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page_max = -1;
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d = ts->ds->data;
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s = ts->vram + YOFF*MAXX + XOFF;
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dd = ts->ds->linesize;
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ds = 1024;
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switch (ts->ds->depth) {
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case 32:
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f = tcx_draw_line32;
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break;
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case 24:
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f = tcx_draw_line24;
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break;
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default:
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case 8:
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f = tcx_draw_line8;
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break;
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case 0:
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return;
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}
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for(y = 0; y < YSZ; y += 4, page += TARGET_PAGE_SIZE) {
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if (cpu_physical_memory_get_dirty(page, VGA_DIRTY_FLAG)) {
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if (y_start < 0)
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y_start = y;
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if (page < page_min)
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page_min = page;
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if (page > page_max)
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page_max = page;
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f(ts, d, s, XSZ);
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d += dd;
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s += ds;
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f(ts, d, s, XSZ);
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d += dd;
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s += ds;
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f(ts, d, s, XSZ);
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d += dd;
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s += ds;
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f(ts, d, s, XSZ);
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d += dd;
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s += ds;
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} else {
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if (y_start >= 0) {
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/* flush to display */
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dpy_update(ts->ds, 0, y_start,
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XSZ, y - y_start);
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y_start = -1;
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}
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d += dd * 4;
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s += ds * 4;
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}
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}
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if (y_start >= 0) {
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/* flush to display */
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dpy_update(ts->ds, 0, y_start,
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XSZ, y - y_start);
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}
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/* reset modified pages */
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if (page_max != -1) {
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cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
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VGA_DIRTY_FLAG);
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}
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}
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void tcx_invalidate_display(void *opaque)
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{
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TCXState *s = opaque;
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int i;
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for (i = 0; i < MAXX*MAXY; i += TARGET_PAGE_SIZE) {
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cpu_physical_memory_set_dirty(s->vram_offset + i);
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}
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}
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static void tcx_save(QEMUFile *f, void *opaque)
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{
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TCXState *s = opaque;
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qemu_put_be32s(f, (uint32_t *)&s->addr);
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qemu_put_be32s(f, (uint32_t *)&s->vram);
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qemu_put_buffer(f, s->r, 256);
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qemu_put_buffer(f, s->g, 256);
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qemu_put_buffer(f, s->b, 256);
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}
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static int tcx_load(QEMUFile *f, void *opaque, int version_id)
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{
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TCXState *s = opaque;
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if (version_id != 1)
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return -EINVAL;
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qemu_get_be32s(f, (uint32_t *)&s->addr);
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qemu_get_be32s(f, (uint32_t *)&s->vram);
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qemu_get_buffer(f, s->r, 256);
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qemu_get_buffer(f, s->g, 256);
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qemu_get_buffer(f, s->b, 256);
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return 0;
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}
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static void tcx_reset(void *opaque)
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{
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TCXState *s = opaque;
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/* Initialize palette */
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memset(s->r, 0, 256);
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memset(s->g, 0, 256);
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memset(s->b, 0, 256);
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s->r[255] = s->g[255] = s->b[255] = 255;
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memset(s->vram, 0, MAXX*MAXY);
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cpu_physical_memory_reset_dirty(s->vram_offset, s->vram_offset + MAXX*MAXY,
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VGA_DIRTY_FLAG);
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}
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void *tcx_init(DisplayState *ds, uint32_t addr, uint8_t *vram_base,
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unsigned long vram_offset, int vram_size)
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{
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TCXState *s;
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s = qemu_mallocz(sizeof(TCXState));
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if (!s)
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return NULL;
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s->ds = ds;
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s->addr = addr;
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s->vram = vram_base;
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s->vram_offset = vram_offset;
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cpu_register_physical_memory(addr, vram_size, vram_offset);
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register_savevm("tcx", addr, 1, tcx_save, tcx_load, s);
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qemu_register_reset(tcx_reset, s);
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tcx_reset(s);
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dpy_resize(s->ds, XSZ, YSZ);
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return s;
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}
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void tcx_screen_dump(void *opaque, const char *filename)
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{
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TCXState *s = opaque;
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FILE *f;
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uint8_t *d, *d1, v;
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int y, x;
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f = fopen(filename, "wb");
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if (!f)
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return;
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fprintf(f, "P6\n%d %d\n%d\n", XSZ, YSZ, 255);
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d1 = s->vram + YOFF*MAXX + XOFF;
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for(y = 0; y < YSZ; y++) {
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d = d1;
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for(x = 0; x < XSZ; x++) {
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v = *d;
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fputc(s->r[v], f);
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fputc(s->g[v], f);
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fputc(s->b[v], f);
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d++;
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}
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d1 += MAXX;
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}
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fclose(f);
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return;
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}
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