--- /dev/null
+/*
+ * QEMU VGA Emulator. An S3 86c968 is emulated
+ *
+ * Copyright (c) 2003 Fabrice Bellard
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <getopt.h>
+#include <inttypes.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <time.h>
+#include <sys/time.h>
+#include <malloc.h>
+#include <termios.h>
+#include <sys/poll.h>
+#include <errno.h>
+#include <sys/wait.h>
+#include <netinet/in.h>
+
+#include "cpu-i386.h"
+#include "exec.h"
+
+#include "vl.h"
+
+#define NO_THUNK_TYPE_SIZE
+#include "thunk.h"
+
+//#define DEBUG_VGA
+
+#define MSR_COLOR_EMULATION 0x01
+#define MSR_PAGE_SELECT 0x20
+
+#define ST01_V_RETRACE 0x08
+#define ST01_DISP_ENABLE 0x01
+
+typedef struct VGAState {
+ uint8_t *vram_ptr;
+ unsigned long vram_offset;
+ unsigned int vram_size;
+ uint32_t latch;
+ uint8_t sr_index;
+ uint8_t sr[8];
+ uint8_t gr_index;
+ uint8_t gr[16];
+ uint8_t ar_index;
+ uint8_t ar[21];
+ int ar_flip_flop;
+ uint8_t cr_index;
+ uint8_t cr[256]; /* CRT registers */
+ uint8_t msr; /* Misc Output Register */
+ uint8_t fcr; /* Feature Control Register */
+ uint8_t st00; /* status 0 */
+ uint8_t st01; /* status 1 */
+ uint8_t dac_state;
+ uint8_t dac_sub_index;
+ uint8_t dac_read_index;
+ uint8_t dac_write_index;
+ uint8_t dac_cache[3]; /* used when writing */
+ uint8_t palette[768];
+
+ /* display refresh support */
+ /* tell for each page if it has been updated since the last time */
+ DisplayState *ds;
+ uint32_t font_offsets[2];
+ int graphic_mode;
+ int shift_control;
+ uint32_t line_offset;
+ uint32_t line_compare;
+ uint32_t start_addr;
+ uint8_t last_cw, last_ch;
+ uint32_t last_width, last_height;
+ uint8_t cursor_start, cursor_end;
+ uint32_t cursor_offset;
+ uint8_t vram_updated[VGA_RAM_SIZE / 4096];
+ uint32_t last_palette[256];
+#define CH_ATTR_SIZE (132 * 60)
+ uint32_t last_ch_attr[CH_ATTR_SIZE]; /* XXX: make it dynamic */
+} VGAState;
+
+/* force some bits to zero */
+static const uint8_t sr_mask[8] = {
+ (uint8_t)~0xfc,
+ (uint8_t)~0xc2,
+ (uint8_t)~0xf0,
+ (uint8_t)~0xc0,
+ (uint8_t)~0xf1,
+ (uint8_t)~0xff,
+ (uint8_t)~0xff,
+ (uint8_t)~0x00,
+};
+
+static const uint8_t gr_mask[16] = {
+ (uint8_t)~0xf0, /* 0x00 */
+ (uint8_t)~0xf0, /* 0x01 */
+ (uint8_t)~0xf0, /* 0x02 */
+ (uint8_t)~0xe0, /* 0x03 */
+ (uint8_t)~0xfc, /* 0x04 */
+ (uint8_t)~0x84, /* 0x05 */
+ (uint8_t)~0xf0, /* 0x06 */
+ (uint8_t)~0xf0, /* 0x07 */
+ (uint8_t)~0x00, /* 0x08 */
+ (uint8_t)~0xff, /* 0x09 */
+ (uint8_t)~0xff, /* 0x0a */
+ (uint8_t)~0xff, /* 0x0b */
+ (uint8_t)~0xff, /* 0x0c */
+ (uint8_t)~0xff, /* 0x0d */
+ (uint8_t)~0xff, /* 0x0e */
+ (uint8_t)~0xff, /* 0x0f */
+};
+
+#define cbswap_32(__x) \
+((uint32_t)( \
+ (((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
+ (((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \
+ (((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \
+ (((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) ))
+
+#ifdef WORD_BIGENDIAN
+#define PAT(x) cbswap_32(x)
+#else
+#define PAT(x) (x)
+#endif
+
+static const uint32_t mask16[16] = {
+ PAT(0x00000000),
+ PAT(0x000000ff),
+ PAT(0x0000ff00),
+ PAT(0x0000ffff),
+ PAT(0x00ff0000),
+ PAT(0x00ff00ff),
+ PAT(0x00ffff00),
+ PAT(0x00ffffff),
+ PAT(0xff000000),
+ PAT(0xff0000ff),
+ PAT(0xff00ff00),
+ PAT(0xff00ffff),
+ PAT(0xffff0000),
+ PAT(0xffff00ff),
+ PAT(0xffffff00),
+ PAT(0xffffffff),
+};
+
+#undef PAT
+
+#ifdef WORD_BIGENDIAN
+#define PAT(x) (x)
+#else
+#define PAT(x) cbswap_32(x)
+#endif
+
+static const uint32_t dmask16[16] = {
+ PAT(0x00000000),
+ PAT(0x000000ff),
+ PAT(0x0000ff00),
+ PAT(0x0000ffff),
+ PAT(0x00ff0000),
+ PAT(0x00ff00ff),
+ PAT(0x00ffff00),
+ PAT(0x00ffffff),
+ PAT(0xff000000),
+ PAT(0xff0000ff),
+ PAT(0xff00ff00),
+ PAT(0xff00ffff),
+ PAT(0xffff0000),
+ PAT(0xffff00ff),
+ PAT(0xffffff00),
+ PAT(0xffffffff),
+};
+
+static const uint32_t dmask4[4] = {
+ PAT(0x00000000),
+ PAT(0x0000ffff),
+ PAT(0xffff0000),
+ PAT(0xffffffff),
+};
+
+static uint32_t expand4[256];
+static uint16_t expand2[256];
+
+VGAState vga_state;
+int vga_io_memory;
+
+static uint32_t vga_ioport_read(CPUX86State *env, uint32_t addr)
+{
+ VGAState *s = &vga_state;
+ int val, index;
+
+ /* check port range access depending on color/monochrome mode */
+ if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION)) ||
+ (addr >= 0x3d0 && addr <= 0x3df && !(s->msr & MSR_COLOR_EMULATION))) {
+ val = 0xff;
+ } else {
+ switch(addr) {
+ case 0x3c0:
+ if (s->ar_flip_flop == 0) {
+ val = s->ar_index;
+ } else {
+ val = 0;
+ }
+ break;
+ case 0x3c1:
+ index = s->ar_index & 0x1f;
+ if (index < 21)
+ val = s->ar[index];
+ else
+ val = 0;
+ break;
+ case 0x3c2:
+ val = s->st00;
+ break;
+ case 0x3c4:
+ val = s->sr_index;
+ break;
+ case 0x3c5:
+ val = s->sr[s->sr_index];
+ break;
+ case 0x3c7:
+ val = s->dac_state;
+ break;
+ case 0x3c9:
+ val = s->palette[s->dac_read_index * 3 + s->dac_sub_index];
+ if (++s->dac_sub_index == 3) {
+ s->dac_sub_index = 0;
+ s->dac_read_index++;
+ }
+ break;
+ case 0x3ca:
+ val = s->fcr;
+ break;
+ case 0x3cc:
+ val = s->msr;
+ break;
+ case 0x3ce:
+ val = s->gr_index;
+ break;
+ case 0x3cf:
+ val = s->gr[s->gr_index];
+ break;
+ case 0x3b4:
+ case 0x3d4:
+ val = s->cr_index;
+ break;
+ case 0x3b5:
+ case 0x3d5:
+ val = s->cr[s->cr_index];
+ break;
+ case 0x3ba:
+ case 0x3da:
+ /* just toggle to fool polling */
+ s->st01 ^= ST01_V_RETRACE | ST01_DISP_ENABLE;
+ val = s->st01;
+ s->ar_flip_flop = 0;
+ break;
+ default:
+ val = 0x00;
+ break;
+ }
+ }
+#ifdef DEBUG_VGA
+ printf("VGA: read addr=0x%04x data=0x%02x\n", addr, val);
+#endif
+ return val;
+}
+
+static void vga_ioport_write(CPUX86State *env, uint32_t addr, uint32_t val)
+{
+ VGAState *s = &vga_state;
+ int index, v;
+
+ /* check port range access depending on color/monochrome mode */
+ if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION)) ||
+ (addr >= 0x3d0 && addr <= 0x3df && !(s->msr & MSR_COLOR_EMULATION)))
+ return;
+
+#ifdef DEBUG_VGA
+ printf("VGA: write addr=0x%04x data=0x%02x\n", addr, val);
+#endif
+
+ switch(addr) {
+ case 0x3c0:
+ if (s->ar_flip_flop == 0) {
+ val &= 0x3f;
+ s->ar_index = val;
+ } else {
+ index = s->ar_index & 0x1f;
+ switch(index) {
+ case 0x00 ... 0x0f:
+ s->ar[index] = val & 0x3f;
+ break;
+ case 0x10:
+ s->ar[index] = val & ~0x10;
+ break;
+ case 0x11:
+ s->ar[index] = val;
+ break;
+ case 0x12:
+ s->ar[index] = val & ~0xc0;
+ break;
+ case 0x13:
+ s->ar[index] = val & ~0xf0;
+ break;
+ case 0x14:
+ s->ar[index] = val & ~0xf0;
+ break;
+ default:
+ break;
+ }
+ }
+ s->ar_flip_flop ^= 1;
+ break;
+ case 0x3c2:
+ s->msr = val & ~0x10;
+ break;
+ case 0x3c4:
+ s->sr_index = val & 7;
+ break;
+ case 0x3c5:
+ s->sr[s->sr_index] = val & sr_mask[s->sr_index];
+ break;
+ case 0x3c7:
+ s->dac_read_index = val;
+ s->dac_sub_index = 0;
+ s->dac_state = 3;
+ break;
+ case 0x3c8:
+ s->dac_write_index = val;
+ s->dac_sub_index = 0;
+ s->dac_state = 0;
+ break;
+ case 0x3c9:
+ s->dac_cache[s->dac_sub_index] = val;
+ if (++s->dac_sub_index == 3) {
+ memcpy(&s->palette[s->dac_write_index * 3], s->dac_cache, 3);
+ s->dac_sub_index = 0;
+ s->dac_write_index++;
+ }
+ break;
+ case 0x3ce:
+ s->gr_index = val & 0x0f;
+ break;
+ case 0x3cf:
+ s->gr[s->gr_index] = val & gr_mask[s->gr_index];
+ break;
+ case 0x3b4:
+ case 0x3d4:
+ s->cr_index = val;
+ break;
+ case 0x3b5:
+ case 0x3d5:
+ /* handle CR0-7 protection */
+ if ((s->cr[11] & 0x80) && s->cr_index <= 7) {
+ /* can always write bit 4 of CR7 */
+ if (s->cr_index == 7)
+ s->cr[7] = (s->cr[7] & ~0x10) | (val & 0x10);
+ return;
+ }
+ switch(s->cr_index) {
+ case 0x01: /* horizontal display end */
+ case 0x07:
+ case 0x09:
+ case 0x0c:
+ case 0x0d:
+ case 0x12: /* veritcal display end */
+ s->cr[s->cr_index] = val;
+ break;
+
+ /* S3 registers */
+ case 0x2d:
+ case 0x2e:
+ case 0x2f:
+ case 0x30:
+ /* chip ID, cannot write */
+ break;
+ case 0x31:
+ /* update start address */
+ s->cr[s->cr_index] = val;
+ v = (val >> 4) & 3;
+ s->cr[0x69] = (s->cr[69] & ~0x03) | v;
+ break;
+ case 0x51:
+ /* update start address */
+ s->cr[s->cr_index] = val;
+ v = val & 3;
+ s->cr[0x69] = (s->cr[69] & ~0x0c) | (v << 2);
+ break;
+ default:
+ s->cr[s->cr_index] = val;
+ break;
+ }
+ break;
+ case 0x3ba:
+ case 0x3da:
+ s->fcr = val & 0x10;
+ break;
+ }
+}
+
+/* called for accesses between 0xa0000 and 0xc0000 */
+static uint32_t vga_mem_readb(uint32_t addr)
+{
+ VGAState *s = &vga_state;
+ int memory_map_mode, plane;
+ uint32_t ret;
+
+ /* convert to VGA memory offset */
+ memory_map_mode = (s->gr[6] >> 2) & 3;
+ switch(memory_map_mode) {
+ case 0:
+ addr -= 0xa0000;
+ break;
+ case 1:
+ addr -= 0xa0000;
+ if (addr >= 0x10000)
+ return 0xff;
+ break;
+ case 2:
+ addr -= 0xb0000;
+ if (addr >= 0x8000)
+ return 0xff;
+ break;
+ default:
+ case 3:
+ addr -= 0xb8000;
+ break;
+ }
+
+ if (s->sr[4] & 0x08) {
+ /* chain 4 mode : simplest access */
+ ret = s->vram_ptr[addr];
+ } else if (s->gr[5] & 0x10) {
+ /* odd/even mode (aka text mode mapping) */
+ plane = (s->gr[4] & 2) | (addr & 1);
+ ret = s->vram_ptr[((addr & ~1) << 1) | plane];
+ } else {
+ /* standard VGA latched access */
+ s->latch = ((uint32_t *)s->vram_ptr)[addr];
+
+ if (!(s->gr[5] & 0x08)) {
+ /* read mode 0 */
+ plane = s->gr[4];
+#ifdef WORD_BIGENDIAN
+ ret = (s->latch >> (24 - (plane * 8))) & 0xff;
+#else
+ ret = (s->latch >> (plane * 8)) & 0xff;
+#endif
+ } else {
+ /* read mode 1 */
+ ret = (s->latch ^ mask16[s->gr[2]]) & mask16[s->gr[7]];
+ ret |= ret >> 16;
+ ret |= ret >> 8;
+ ret = (~ret) & 0xff;
+ }
+ }
+ return ret;
+}
+
+static uint32_t vga_mem_readw(uint32_t addr)
+{
+ uint32_t v;
+ v = vga_mem_readb(addr);
+ v |= vga_mem_readb(addr + 1) << 8;
+ return v;
+}
+
+static uint32_t vga_mem_readl(uint32_t addr)
+{
+ uint32_t v;
+ v = vga_mem_readb(addr);
+ v |= vga_mem_readb(addr + 1) << 8;
+ v |= vga_mem_readb(addr + 2) << 16;
+ v |= vga_mem_readb(addr + 3) << 24;
+ return v;
+}
+
+
+/* called for accesses between 0xa0000 and 0xc0000 */
+void vga_mem_writeb(uint32_t addr, uint32_t val)
+{
+ VGAState *s = &vga_state;
+ int memory_map_mode, plane, write_mode, b, func_select;
+ uint32_t write_mask, bit_mask, set_mask;
+
+#ifdef DEBUG_VGA
+ printf("vga: [0x%x] = 0x%02x\n", addr, val);
+#endif
+ /* convert to VGA memory offset */
+ memory_map_mode = (s->gr[6] >> 2) & 3;
+ switch(memory_map_mode) {
+ case 0:
+ addr -= 0xa0000;
+ break;
+ case 1:
+ addr -= 0xa0000;
+ if (addr >= 0x10000)
+ return;
+ break;
+ case 2:
+ addr -= 0xb0000;
+ if (addr >= 0x8000)
+ return;
+ break;
+ default:
+ case 3:
+ addr -= 0xb8000;
+ break;
+ }
+
+ if (s->sr[4] & 0x08) {
+ /* chain 4 mode : simplest access */
+ plane = addr & 3;
+ if (s->sr[2] & (1 << plane)) {
+ s->vram_ptr[addr] = val;
+#ifdef DEBUG_VGA
+ printf("vga: chain4: [0x%x]\n", addr);
+#endif
+ s->vram_updated[addr >> 12] = 1;
+ }
+ } else if (s->gr[5] & 0x10) {
+ /* odd/even mode (aka text mode mapping) */
+ plane = (s->gr[4] & 2) | (addr & 1);
+ if (s->sr[2] & (1 << plane)) {
+ addr = ((addr & ~1) << 1) | plane;
+ s->vram_ptr[addr] = val;
+#ifdef DEBUG_VGA
+ printf("vga: odd/even: [0x%x]\n", addr);
+#endif
+ s->vram_updated[addr >> 12] = 1;
+ }
+ } else {
+ /* standard VGA latched access */
+ write_mode = s->gr[5] & 3;
+ switch(write_mode) {
+ default:
+ case 0:
+ /* rotate */
+ b = s->gr[3] & 7;
+ val = ((val >> b) | (val << (8 - b))) & 0xff;
+ val |= val << 8;
+ val |= val << 16;
+
+ /* apply set/reset mask */
+ set_mask = mask16[s->gr[1]];
+ val = (val & ~set_mask) | (mask16[s->gr[0]] & set_mask);
+ bit_mask = s->gr[8];
+ break;
+ case 1:
+ val = s->latch;
+ goto do_write;
+ case 2:
+ val = mask16[val & 0x0f];
+ bit_mask = s->gr[8];
+ break;
+ case 3:
+ /* rotate */
+ b = s->gr[3] & 7;
+ val = ((val >> b) | (val << (8 - b)));
+
+ bit_mask = s->gr[8] & val;
+ val = mask16[s->gr[0]];
+ break;
+ }
+
+ /* apply logical operation */
+ func_select = s->gr[3] >> 3;
+ switch(func_select) {
+ case 0:
+ default:
+ /* nothing to do */
+ break;
+ case 1:
+ /* and */
+ val &= s->latch;
+ break;
+ case 2:
+ /* or */
+ val |= s->latch;
+ break;
+ case 3:
+ /* xor */
+ val ^= s->latch;
+ break;
+ }
+
+ /* apply bit mask */
+ bit_mask |= bit_mask << 8;
+ bit_mask |= bit_mask << 16;
+ val = (val & bit_mask) | (s->latch & ~bit_mask);
+
+ do_write:
+ /* mask data according to sr[2] */
+ write_mask = mask16[s->sr[2]];
+ ((uint32_t *)s->vram_ptr)[addr] =
+ (((uint32_t *)s->vram_ptr)[addr] & ~write_mask) |
+ (val & write_mask);
+#ifdef DEBUG_VGA
+ printf("vga: latch: [0x%x] mask=0x%08x val=0x%08x\n",
+ addr * 4, write_mask, val);
+#endif
+ s->vram_updated[addr >> 10] = 1;
+ }
+}
+
+void vga_mem_writew(uint32_t addr, uint32_t val)
+{
+ vga_mem_writeb(addr, val & 0xff);
+ vga_mem_writeb(addr + 1, (val >> 8) & 0xff);
+}
+
+void vga_mem_writel(uint32_t addr, uint32_t val)
+{
+ vga_mem_writeb(addr, val & 0xff);
+ vga_mem_writeb(addr + 1, (val >> 8) & 0xff);
+ vga_mem_writeb(addr + 2, (val >> 16) & 0xff);
+ vga_mem_writeb(addr + 3, (val >> 24) & 0xff);
+}
+
+#ifdef WORD_BIGENDIAN
+#define BIG 1
+#else
+#define BIG 0
+#endif
+
+#ifdef WORDS_BIGENDIAN
+#define GET_PLANE(data, p) (((data) >> (24 - (p) * 8)) & 0xff)
+#else
+#define GET_PLANE(data, p) (((data) >> ((p) * 8)) & 0xff)
+#endif
+
+typedef void vga_draw_glyph8_func(uint8_t *d, int linesize,
+ const uint8_t *font_ptr, int h,
+ uint32_t fgcol, uint32_t bgcol);
+typedef void vga_draw_glyph9_func(uint8_t *d, int linesize,
+ const uint8_t *font_ptr, int h,
+ uint32_t fgcol, uint32_t bgcol, int dup9);
+typedef void vga_draw_line_func(VGAState *s1, uint8_t *d,
+ const uint8_t *s, int width);
+
+static inline unsigned int rgb_to_pixel8(unsigned int r, unsigned int g, unsigned b)
+{
+ /* XXX: TODO */
+ return 0;
+}
+
+static inline unsigned int rgb_to_pixel15(unsigned int r, unsigned int g, unsigned b)
+{
+ return ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3);
+}
+
+static inline unsigned int rgb_to_pixel16(unsigned int r, unsigned int g, unsigned b)
+{
+ return ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
+}
+
+static inline unsigned int rgb_to_pixel32(unsigned int r, unsigned int g, unsigned b)
+{
+ return (r << 16) | (g << 8) | b;
+}
+
+#define DEPTH 8
+#include "vga_template.h"
+
+#define DEPTH 15
+#include "vga_template.h"
+
+#define DEPTH 16
+#include "vga_template.h"
+
+#define DEPTH 32
+#include "vga_template.h"
+
+static inline int c6_to_8(int v)
+{
+ int b;
+ v &= 0x3f;
+ b = v & 1;
+ return (v << 2) | (b << 1) | b;
+}
+
+/* return true if the palette was modified */
+static int update_palette16(VGAState *s)
+{
+ int full_update, i, depth;
+ uint32_t v, col, *palette;
+ unsigned int (*rgb_to_pixel)(unsigned int r, unsigned int g, unsigned b);
+ depth = s->ds->depth;
+ switch(depth) {
+ case 8:
+ rgb_to_pixel = rgb_to_pixel8;
+ break;
+ case 15:
+ rgb_to_pixel = rgb_to_pixel15;
+ break;
+ default:
+ case 16:
+ rgb_to_pixel = rgb_to_pixel16;
+ break;
+ case 32:
+ rgb_to_pixel = rgb_to_pixel32;
+ break;
+ }
+
+ full_update = 0;
+ palette = s->last_palette;
+ for(i = 0; i < 16; i++) {
+ v = s->ar[i];
+ if (s->ar[0x10] & 0x80)
+ v = ((s->ar[0x14] & 0xf) << 4) | (v & 0xf);
+ else
+ v = ((s->ar[0x14] & 0xc) << 4) | (v & 0x3f);
+ v = v * 3;
+ col = rgb_to_pixel(c6_to_8(s->palette[v]),
+ c6_to_8(s->palette[v + 1]),
+ c6_to_8(s->palette[v + 2]));
+
+ if (depth == 8) {
+ col |= col << 8;
+ col |= col << 16;
+ } else if (depth <= 16) {
+ col |= col << 16;
+ }
+ // printf("%2d: %08x\n", i, col);
+ if (col != palette[i]) {
+ full_update = 1;
+ palette[i] = col;
+ }
+ }
+ return full_update;
+}
+
+/* update start_addr and line_offset. Return TRUE if modified */
+static int update_basic_params(VGAState *s)
+{
+ int full_update;
+ uint32_t start_addr, line_offset, line_compare, v;
+
+ full_update = 0;
+ /* compute line_offset in bytes */
+ v = (s->cr[0x51] >> 4) & 3; /* S3 extension */
+ if (v == 0)
+ v = (s->cr[0x43] >> 2) & 1; /* S3 extension */
+ line_offset = s->cr[0x13] | (v << 8);
+ line_offset <<= 3;
+#if 0
+ /* XXX: check this - inconsistent with some VGA docs */
+ if (s->cr[0x14] & 0x40)
+ line_offset <<= 2;
+ else if (!(s->cr[0x17] & 0x40))
+ line_offset <<= 1;
+#endif
+ /* starting address */
+ start_addr = s->cr[0x0d] | (s->cr[0x0c] << 8);
+ start_addr |= (s->cr[0x69] & 0x1f) << 16; /* S3 extension */
+
+ /* line compare */
+ line_compare = s->cr[0x18] |
+ ((s->cr[0x07] & 0x10) << 4) |
+ ((s->cr[0x09] & 0x40) << 3);
+
+ if (line_offset != s->line_offset ||
+ start_addr != s->start_addr ||
+ line_compare != s->line_compare) {
+ s->line_offset = line_offset;
+ s->start_addr = start_addr;
+ s->line_compare = line_compare;
+ full_update = 1;
+ }
+ return full_update;
+}
+
+static inline int get_depth_index(int depth)
+{
+ switch(depth) {
+ default:
+ case 8:
+ return 0;
+ case 15:
+ return 1;
+ case 16:
+ return 2;
+ case 32:
+ return 3;
+ }
+}
+
+static vga_draw_glyph8_func *vga_draw_glyph8_table[4] = {
+ vga_draw_glyph8_8,
+ vga_draw_glyph8_16,
+ vga_draw_glyph8_16,
+ vga_draw_glyph8_32,
+};
+
+static vga_draw_glyph9_func *vga_draw_glyph9_table[4] = {
+ vga_draw_glyph9_8,
+ vga_draw_glyph9_16,
+ vga_draw_glyph9_16,
+ vga_draw_glyph9_32,
+};
+
+static const uint8_t cursor_glyph[32 * 4] = {
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+};
+
+/*
+ * Text mode update
+ * Missing:
+ * - double scan
+ * - double width
+ * - underline
+ * - flashing
+ */
+static void vga_draw_text(VGAState *s, int full_update)
+{
+ int cx, cy, cheight, cw, ch, cattr, height, width, ch_attr;
+ int cx_min, cx_max, linesize, x_incr;
+ uint32_t offset, fgcol, bgcol, v, cursor_offset;
+ uint8_t *d1, *d, *src, *s1, *dest, *cursor_ptr;
+ const uint8_t *font_ptr, *font_base[2];
+ int dup9, line_offset, depth_index;
+ uint32_t *palette;
+ uint32_t *ch_attr_ptr;
+ vga_draw_glyph8_func *vga_draw_glyph8;
+ vga_draw_glyph9_func *vga_draw_glyph9;
+
+ full_update |= update_palette16(s);
+ palette = s->last_palette;
+
+ /* compute font data address (in plane 2) */
+ v = s->sr[3];
+ offset = (((v >> 5) & 1) | ((v >> 1) & 6)) * 8192 * 4 + 2;
+ if (offset != s->font_offsets[0]) {
+ s->font_offsets[0] = offset;
+ full_update = 1;
+ }
+ font_base[0] = s->vram_ptr + offset;
+
+ offset = (((v >> 4) & 1) | ((v << 1) & 6)) * 8192 * 4 + 2;
+ font_base[1] = s->vram_ptr + offset;
+ if (offset != s->font_offsets[1]) {
+ s->font_offsets[1] = offset;
+ full_update = 1;
+ }
+
+ full_update |= update_basic_params(s);
+
+ line_offset = s->line_offset;
+ s1 = s->vram_ptr + (s->start_addr * 4);
+
+ /* total width & height */
+ cheight = (s->cr[9] & 0x1f) + 1;
+ cw = 8;
+ if (s->sr[1] & 0x01)
+ cw = 9;
+ x_incr = cw * ((s->ds->depth + 7) >> 3);
+ width = (s->cr[0x01] + 1);
+ height = s->cr[0x12] |
+ ((s->cr[0x07] & 0x02) << 7) |
+ ((s->cr[0x07] & 0x40) << 3);
+ height = (height + 1) / cheight;
+ if (width != s->last_width || height != s->last_height ||
+ cw != s->last_cw || cw != s->last_cw) {
+ dpy_resize(s->ds, width * cw, height * cheight);
+ s->last_width = width;
+ s->last_height = height;
+ s->last_ch = cheight;
+ s->last_cw = cw;
+ full_update = 1;
+ }
+ cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr;
+ if (cursor_offset != s->cursor_offset ||
+ s->cr[0xa] != s->cursor_start ||
+ s->cr[0xb] != s->cursor_end) {
+ /* if the cursor position changed, we update the old and new
+ chars */
+ if (s->cursor_offset < CH_ATTR_SIZE)
+ s->last_ch_attr[s->cursor_offset] = -1;
+ if (cursor_offset < CH_ATTR_SIZE)
+ s->last_ch_attr[cursor_offset] = -1;
+ s->cursor_offset = cursor_offset;
+ s->cursor_start = s->cr[0xa];
+ s->cursor_end = s->cr[0xb];
+ }
+ cursor_ptr = s->vram_ptr + cursor_offset * 4;
+
+ depth_index = get_depth_index(s->ds->depth);
+ vga_draw_glyph8 = vga_draw_glyph8_table[depth_index];
+ vga_draw_glyph9 = vga_draw_glyph9_table[depth_index];
+
+ dest = s->ds->data;
+ linesize = s->ds->linesize;
+ ch_attr_ptr = s->last_ch_attr;
+ for(cy = 0; cy < height; cy++) {
+ d1 = dest;
+ src = s1;
+ cx_min = width;
+ cx_max = -1;
+ for(cx = 0; cx < width; cx++) {
+ ch_attr = *(uint16_t *)src;
+ if (full_update || ch_attr != *ch_attr_ptr) {
+ if (cx < cx_min)
+ cx_min = cx;
+ if (cx > cx_max)
+ cx_max = cx;
+ *ch_attr_ptr = ch_attr;
+#ifdef WORDS_BIGENDIAN
+ ch = ch_attr >> 8;
+ cattr = ch_attr & 0xff;
+#else
+ ch = ch_attr & 0xff;
+ cattr = ch_attr >> 8;
+#endif
+ font_ptr = font_base[(cattr >> 3) & 1];
+ font_ptr += 32 * 4 * ch;
+ bgcol = palette[cattr >> 4];
+ fgcol = palette[cattr & 0x0f];
+ if (cw == 8) {
+ vga_draw_glyph8(d1, linesize,
+ font_ptr, cheight, fgcol, bgcol);
+ } else {
+ dup9 = 0;
+ if (ch >= 0xb0 && ch <= 0xdf && (s->ar[0x10] & 0x04))
+ dup9 = 1;
+ vga_draw_glyph9(d1, linesize,
+ font_ptr, cheight, fgcol, bgcol, dup9);
+ }
+ if (src == cursor_ptr &&
+ !(s->cr[0x0a] & 0x20)) {
+ int line_start, line_last, h;
+ /* draw the cursor */
+ line_start = s->cr[0x0a] & 0x1f;
+ line_last = s->cr[0x0b] & 0x1f;
+ /* XXX: check that */
+ if (line_last > cheight - 1)
+ line_last = cheight - 1;
+ if (line_last >= line_start && line_start < cheight) {
+ h = line_last - line_start + 1;
+ d = d1 + linesize * line_start;
+ if (cw == 8) {
+ vga_draw_glyph8(d, linesize,
+ cursor_glyph, h, fgcol, bgcol);
+ } else {
+ vga_draw_glyph9(d, linesize,
+ cursor_glyph, h, fgcol, bgcol, 1);
+ }
+ }
+ }
+ }
+ d1 += x_incr;
+ src += 4;
+ ch_attr_ptr++;
+ }
+ if (cx_max != -1) {
+ dpy_update(s->ds, cx_min * cw, cy * cheight,
+ (cx_max - cx_min + 1) * cw, cheight);
+ }
+ dest += linesize * cheight;
+ s1 += line_offset;
+ }
+}
+
+static vga_draw_line_func *vga_draw_line_table[4 * 6] = {
+ vga_draw_line2_8,
+ vga_draw_line2_16,
+ vga_draw_line2_16,
+ vga_draw_line2_32,
+
+ vga_draw_line4_8,
+ vga_draw_line4_16,
+ vga_draw_line4_16,
+ vga_draw_line4_32,
+
+ vga_draw_line8_8,
+ vga_draw_line8_16,
+ vga_draw_line8_16,
+ vga_draw_line8_32,
+
+ vga_draw_line15_8,
+ vga_draw_line15_15,
+ vga_draw_line15_16,
+ vga_draw_line15_32,
+
+ vga_draw_line16_8,
+ vga_draw_line16_15,
+ vga_draw_line16_16,
+ vga_draw_line16_32,
+
+ vga_draw_line32_8,
+ vga_draw_line32_15,
+ vga_draw_line32_16,
+ vga_draw_line32_32,
+};
+
+/*
+ * graphic modes
+ * Missing:
+ * - double scan
+ * - double width
+ */
+static void vga_draw_graphic(VGAState *s, int full_update)
+{
+ int y, update, y_min, y_max, page_min, page_max, linesize;
+ int width, height, shift_control, line_offset, page0, page1;
+ uint8_t *d;
+ uint32_t v, *palette, addr1, addr;
+ vga_draw_line_func *vga_draw_line;
+
+ full_update |= update_palette16(s);
+ palette = s->last_palette;
+
+ full_update |= update_basic_params(s);
+
+ width = (s->cr[0x01] + 1);
+ height = s->cr[0x12] |
+ ((s->cr[0x07] & 0x02) << 7) |
+ ((s->cr[0x07] & 0x40) << 3);
+ height = (height + 1);
+
+ if (width != s->last_width ||
+ height != s->last_height) {
+ s->last_width = width;
+ s->last_height = height;
+ full_update = 1;
+ }
+
+ shift_control = (s->gr[0x05] >> 5) & 3;
+ if (shift_control != s->shift_control) {
+ full_update = 1;
+ s->shift_control = shift_control;
+ }
+
+ if (shift_control == 0)
+ v = 1; /* 4 bit/pxeil */
+ else if (shift_control == 1)
+ v = 0; /* 2 bit/pixel */
+ else
+ v = 2; /* 8 bit/pixel */
+
+ vga_draw_line = vga_draw_line_table[v * 4 + get_depth_index(s->ds->depth)];
+
+ line_offset = s->line_offset;
+ addr1 = (s->start_addr * 4);
+ y_min = height;
+ y_max = -1;
+ page_min = 0x7fffffff;
+ page_max = -1;
+ d = s->ds->data;
+ linesize = s->ds->linesize;
+ for(y = 0; y < height; y++) {
+ addr = addr1;
+ if (s->cr[0x17] & 1) {
+ /* CGA compatibility handling */
+ addr = (addr & ~0x2000) | ((y & 1) << 13);
+ }
+ if (s->cr[0x17] & 2) {
+ addr = (addr & ~0x4000) | ((y & 2) << 13);
+ }
+ page0 = addr >> 12;
+ page1 = (addr + width - 1) >> 12;
+ update = full_update | s->vram_updated[page0] | s->vram_updated[page1];
+ if (update) {
+ if (y < y_min)
+ y_min = y;
+ if (y > y_max)
+ y_max = y;
+ if (page0 < page_min)
+ page_min = page0;
+ if (page1 > page_max)
+ page_max = page1;
+ vga_draw_line(s, d, s->vram_ptr + addr, width);
+ }
+ if (y == s->line_compare) {
+ addr1 = 0;
+ } else {
+ addr1 += line_offset;
+ }
+ d += linesize;
+ }
+
+ /* reset modified pages */
+ if (page_max != -1) {
+ memset(s->vram_updated + page_min, 0, page_max - page_min + 1);
+ }
+}
+
+/* draw text terminal (very limited, just for simple boot debug
+ messages) */
+static int last_cursor_pos;
+
+void vga_draw_dumb(VGAState *s)
+{
+ int c, i, cursor_pos, eol;
+
+ cursor_pos = s->cr[0x0f] | (s->cr[0x0e] << 8);
+ eol = 0;
+ for(i = last_cursor_pos; i < cursor_pos; i++) {
+ /* XXX: should use vga RAM */
+ c = phys_ram_base[0xb8000 + (i) * 2];
+ if (c >= ' ') {
+ putchar(c);
+ eol = 0;
+ } else {
+ if (!eol)
+ putchar('\n');
+ eol = 1;
+ }
+ }
+ fflush(stdout);
+ last_cursor_pos = cursor_pos;
+}
+
+void vga_update_display(void)
+{
+ VGAState *s = &vga_state;
+ int full_update, graphic_mode;
+
+ if (s->ds->depth == 0) {
+ vga_draw_dumb(s);
+ } else {
+ full_update = 0;
+ graphic_mode = s->gr[6] & 1;
+ if (graphic_mode != s->graphic_mode) {
+ s->graphic_mode = graphic_mode;
+ full_update = 1;
+ }
+ if (graphic_mode)
+ vga_draw_graphic(s, full_update);
+ else
+ vga_draw_text(s, full_update);
+ }
+}
+
+void vga_reset(VGAState *s)
+{
+ memset(s, 0, sizeof(VGAState));
+ /* chip ID for 8c968 */
+ s->cr[0x2d] = 0x88;
+ s->cr[0x2e] = 0xb0;
+ s->cr[0x2f] = 0x01; /* XXX: check revision code */
+ s->cr[0x30] = 0xe1;
+ s->graphic_mode = -1; /* force full update */
+}
+
+CPUReadMemoryFunc *vga_mem_read[3] = {
+ vga_mem_readb,
+ vga_mem_readw,
+ vga_mem_readl,
+};
+
+CPUWriteMemoryFunc *vga_mem_write[3] = {
+ vga_mem_writeb,
+ vga_mem_writew,
+ vga_mem_writel,
+};
+
+int vga_init(DisplayState *ds, uint8_t *vga_ram_base,
+ unsigned long vga_ram_offset, int vga_ram_size)
+{
+ VGAState *s = &vga_state;
+ int i, j, v;
+
+ for(i = 0;i < 256; i++) {
+ v = 0;
+ for(j = 0; j < 8; j++) {
+ v |= ((i >> j) & 1) << (j * 4);
+ }
+ expand4[i] = v;
+
+ v = 0;
+ for(j = 0; j < 4; j++) {
+ v |= ((i >> (2 * j)) & 3) << (j * 4);
+ }
+ expand2[i] = v;
+ }
+
+ vga_reset(s);
+
+ s->vram_ptr = vga_ram_base;
+ s->vram_offset = vga_ram_offset;
+ s->vram_size = vga_ram_size;
+ s->ds = ds;
+
+ register_ioport_write(0x3c0, 16, vga_ioport_write, 1);
+
+ register_ioport_write(0x3b4, 2, vga_ioport_write, 1);
+ register_ioport_write(0x3d4, 2, vga_ioport_write, 1);
+ register_ioport_write(0x3ba, 1, vga_ioport_write, 1);
+ register_ioport_write(0x3da, 1, vga_ioport_write, 1);
+
+ register_ioport_read(0x3c0, 16, vga_ioport_read, 1);
+
+ register_ioport_read(0x3b4, 2, vga_ioport_read, 1);
+ register_ioport_read(0x3d4, 2, vga_ioport_read, 1);
+ register_ioport_read(0x3ba, 1, vga_ioport_read, 1);
+ register_ioport_read(0x3da, 1, vga_ioport_read, 1);
+
+ vga_io_memory = cpu_register_io_memory(0, vga_mem_read, vga_mem_write);
+ cpu_register_physical_memory(0xa0000, 0x20000, vga_io_memory);
+ return 0;
+}
--- /dev/null
+/*
+ * QEMU VGA Emulator templates
+ *
+ * Copyright (c) 2003 Fabrice Bellard
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#if DEPTH == 8
+#define BPP 1
+#define PIXEL_TYPE uint8_t
+#elif DEPTH == 15 || DEPTH == 16
+#define BPP 2
+#define PIXEL_TYPE uint16_t
+#elif DEPTH == 32
+#define BPP 4
+#define PIXEL_TYPE uint32_t
+#else
+#error unsupport depth
+#endif
+
+#if DEPTH != 15
+
+static void glue(vga_draw_glyph8_, DEPTH)(uint8_t *d, int linesize,
+ const uint8_t *font_ptr, int h,
+ uint32_t fgcol, uint32_t bgcol)
+{
+ uint32_t font_data, xorcol;
+
+ xorcol = bgcol ^ fgcol;
+ do {
+ font_data = font_ptr[0];
+#if BPP == 1
+ ((uint32_t *)d)[0] = (dmask16[(font_data >> 4)] & xorcol) ^ bgcol;
+ ((uint32_t *)d)[3] = (dmask16[(font_data >> 0) & 0xf] & xorcol) ^ bgcol;
+#elif BPP == 2
+ ((uint32_t *)d)[0] = (dmask4[(font_data >> 6)] & xorcol) ^ bgcol;
+ ((uint32_t *)d)[1] = (dmask4[(font_data >> 4) & 3] & xorcol) ^ bgcol;
+ ((uint32_t *)d)[2] = (dmask4[(font_data >> 2) & 3] & xorcol) ^ bgcol;
+ ((uint32_t *)d)[3] = (dmask4[(font_data >> 0) & 3] & xorcol) ^ bgcol;
+#else
+ ((uint32_t *)d)[0] = ((-(font_data >> 7)) & xorcol) ^ bgcol;
+ ((uint32_t *)d)[1] = ((-(font_data >> 6) & 1) & xorcol) ^ bgcol;
+ ((uint32_t *)d)[2] = ((-(font_data >> 5) & 1) & xorcol) ^ bgcol;
+ ((uint32_t *)d)[3] = ((-(font_data >> 4) & 1) & xorcol) ^ bgcol;
+ ((uint32_t *)d)[4] = ((-(font_data >> 3) & 1) & xorcol) ^ bgcol;
+ ((uint32_t *)d)[5] = ((-(font_data >> 2) & 1) & xorcol) ^ bgcol;
+ ((uint32_t *)d)[6] = ((-(font_data >> 1) & 1) & xorcol) ^ bgcol;
+ ((uint32_t *)d)[7] = ((-(font_data >> 0) & 1) & xorcol) ^ bgcol;
+#endif
+ font_ptr += 4;
+ d += linesize;
+ } while (--h);
+}
+
+static void glue(vga_draw_glyph9_, DEPTH)(uint8_t *d, int linesize,
+ const uint8_t *font_ptr, int h,
+ uint32_t fgcol, uint32_t bgcol, int dup9)
+{
+ uint32_t font_data, xorcol, v;
+
+ xorcol = bgcol ^ fgcol;
+ do {
+ font_data = font_ptr[0];
+ /* XXX: unaligned accesses are done */
+#if BPP == 1
+ ((uint32_t *)d)[0] = (dmask16[(font_data >> 4)] & xorcol) ^ bgcol;
+ v = (dmask16[(font_data >> 0) & 0xf] & xorcol) ^ bgcol;
+ ((uint32_t *)d)[3] = v;
+ if (dup9)
+ *(uint8_t *)(d + 8) = v >> (24 * (1 - BIG));
+ else
+ *(uint8_t *)(d + 8) = bgcol;
+
+#elif BPP == 2
+ ((uint32_t *)d)[0] = (dmask4[(font_data >> 6)] & xorcol) ^ bgcol;
+ ((uint32_t *)d)[1] = (dmask4[(font_data >> 4) & 3] & xorcol) ^ bgcol;
+ ((uint32_t *)d)[2] = (dmask4[(font_data >> 2) & 3] & xorcol) ^ bgcol;
+ v = (dmask4[(font_data >> 0) & 3] & xorcol) ^ bgcol;
+ ((uint32_t *)d)[3] = v;
+ if (dup9)
+ *(uint16_t *)(d + 8) = v >> (16 * (1 - BIG));
+ else
+ *(uint16_t *)(d + 8) = bgcol;
+#else
+ ((uint32_t *)d)[0] = ((-(font_data >> 7)) & xorcol) ^ bgcol;
+ ((uint32_t *)d)[1] = ((-(font_data >> 6) & 1) & xorcol) ^ bgcol;
+ ((uint32_t *)d)[2] = ((-(font_data >> 5) & 1) & xorcol) ^ bgcol;
+ ((uint32_t *)d)[3] = ((-(font_data >> 4) & 1) & xorcol) ^ bgcol;
+ ((uint32_t *)d)[4] = ((-(font_data >> 3) & 1) & xorcol) ^ bgcol;
+ ((uint32_t *)d)[5] = ((-(font_data >> 2) & 1) & xorcol) ^ bgcol;
+ ((uint32_t *)d)[6] = ((-(font_data >> 1) & 1) & xorcol) ^ bgcol;
+ v = ((-(font_data >> 0) & 1) & xorcol) ^ bgcol;
+ ((uint32_t *)d)[7] = v;
+ if (dup9)
+ *(uint32_t *)(d + 8) = v;
+ else
+ *(uint32_t *)(d + 8) = bgcol;
+#endif
+ font_ptr += 4;
+ d += linesize;
+ } while (--h);
+}
+
+/*
+ * 4 color mode
+ */
+static void glue(vga_draw_line2_, DEPTH)(VGAState *s1, uint8_t *d,
+ const uint8_t *s, int width)
+{
+ uint32_t plane_mask, *palette, data, v;
+ int x;
+
+ palette = s1->last_palette;
+ plane_mask = mask16[s1->ar[0x12] & 0xf];
+ width >>= 3;
+ for(x = 0; x < width; x++) {
+ data = ((uint32_t *)s)[0];
+ data &= plane_mask;
+ v = expand2[GET_PLANE(data, 0)];
+ v |= expand2[GET_PLANE(data, 2)] << 2;
+ ((PIXEL_TYPE *)d)[0] = palette[v >> 12];
+ ((PIXEL_TYPE *)d)[1] = palette[(v >> 8) & 0xf];
+ ((PIXEL_TYPE *)d)[2] = palette[(v >> 4) & 0xf];
+ ((PIXEL_TYPE *)d)[3] = palette[(v >> 0) & 0xf];
+
+ v = expand2[GET_PLANE(data, 1)];
+ v |= expand2[GET_PLANE(data, 3)] << 2;
+ ((PIXEL_TYPE *)d)[4] = palette[v >> 12];
+ ((PIXEL_TYPE *)d)[5] = palette[(v >> 8) & 0xf];
+ ((PIXEL_TYPE *)d)[6] = palette[(v >> 4) & 0xf];
+ ((PIXEL_TYPE *)d)[7] = palette[(v >> 0) & 0xf];
+ d += BPP * 8;
+ s += 4;
+ }
+}
+
+/*
+ * 16 color mode
+ */
+static void glue(vga_draw_line4_, DEPTH)(VGAState *s1, uint8_t *d,
+ const uint8_t *s, int width)
+{
+ uint32_t plane_mask, data, v, *palette;
+ int x;
+
+ palette = s1->last_palette;
+ plane_mask = mask16[s1->ar[0x12] & 0xf];
+ width >>= 3;
+ for(x = 0; x < width; x++) {
+ data = ((uint32_t *)s)[0];
+ data &= plane_mask;
+ v = expand4[GET_PLANE(data, 0)];
+ v |= expand4[GET_PLANE(data, 1)] << 1;
+ v |= expand4[GET_PLANE(data, 2)] << 2;
+ v |= expand4[GET_PLANE(data, 3)] << 3;
+ ((PIXEL_TYPE *)d)[0] = palette[v >> 28];
+ ((PIXEL_TYPE *)d)[1] = palette[(v >> 24) & 0xf];
+ ((PIXEL_TYPE *)d)[2] = palette[(v >> 20) & 0xf];
+ ((PIXEL_TYPE *)d)[3] = palette[(v >> 16) & 0xf];
+ ((PIXEL_TYPE *)d)[4] = palette[(v >> 12) & 0xf];
+ ((PIXEL_TYPE *)d)[5] = palette[(v >> 8) & 0xf];
+ ((PIXEL_TYPE *)d)[6] = palette[(v >> 4) & 0xf];
+ ((PIXEL_TYPE *)d)[7] = palette[(v >> 0) & 0xf];
+ d += BPP * 8;
+ s += 4;
+ }
+}
+
+/*
+ * 256 color mode
+ *
+ * XXX: add plane_mask support (never used in standard VGA modes)
+ */
+static void glue(vga_draw_line8_, DEPTH)(VGAState *s1, uint8_t *d,
+ const uint8_t *s, int width)
+{
+ uint32_t *palette;
+ int x;
+
+ palette = s1->last_palette;
+ width >>= 3;
+ for(x = 0; x < width; x++) {
+ ((PIXEL_TYPE *)d)[0] = palette[s[0]];
+ ((PIXEL_TYPE *)d)[1] = palette[s[1]];
+ ((PIXEL_TYPE *)d)[2] = palette[s[2]];
+ ((PIXEL_TYPE *)d)[3] = palette[s[3]];
+ ((PIXEL_TYPE *)d)[4] = palette[s[4]];
+ ((PIXEL_TYPE *)d)[5] = palette[s[5]];
+ ((PIXEL_TYPE *)d)[6] = palette[s[6]];
+ ((PIXEL_TYPE *)d)[7] = palette[s[7]];
+ d += BPP * 8;
+ s += 8;
+ }
+}
+
+#endif /* DEPTH != 15 */
+
+
+/* XXX: optimize */
+
+/*
+ * 15 bit color
+ */
+static void glue(vga_draw_line15_, DEPTH)(VGAState *s1, uint8_t *d,
+ const uint8_t *s, int width)
+{
+#if DEPTH == 15 && !defined(WORDS_BIGENDIAN)
+ memcpy(d, s, width * 2);
+#else
+ int w;
+ uint32_t v, r, g, b;
+
+ w = width;
+ do {
+ v = lduw((void *)s);
+ r = (v >> 7) & 0xf8;
+ g = (v >> 2) & 0xf8;
+ b = (v << 3) & 0xf8;
+ ((PIXEL_TYPE *)d)[0] = glue(rgb_to_pixel, DEPTH)(r, g, b);
+ s += 2;
+ d += BPP;
+ } while (--w != 0);
+#endif
+}
+
+/*
+ * 16 bit color
+ */
+static void glue(vga_draw_line16_, DEPTH)(VGAState *s1, uint8_t *d,
+ const uint8_t *s, int width)
+{
+#if DEPTH == 16 && !defined(WORDS_BIGENDIAN)
+ memcpy(d, s, width * 2);
+#else
+ int w;
+ uint32_t v, r, g, b;
+
+ w = width;
+ do {
+ v = lduw((void *)s);
+ r = (v >> 8) & 0xf8;
+ g = (v >> 3) & 0xfc;
+ b = (v << 3) & 0xf8;
+ ((PIXEL_TYPE *)d)[0] = glue(rgb_to_pixel, DEPTH)(r, g, b);
+ s += 2;
+ d += BPP;
+ } while (--w != 0);
+#endif
+}
+
+/*
+ * 32 bit color
+ */
+static void glue(vga_draw_line32_, DEPTH)(VGAState *s1, uint8_t *d,
+ const uint8_t *s, int width)
+{
+#if DEPTH == 32 && !defined(WORDS_BIGENDIAN)
+ memcpy(d, s, width * 4);
+#else
+ int w;
+ uint32_t r, g, b;
+
+ w = width;
+ do {
+ b = s[0];
+ g = s[1];
+ r = s[2];
+ ((PIXEL_TYPE *)d)[0] = glue(rgb_to_pixel, DEPTH)(r, g, b);
+ s += 4;
+ d += BPP;
+ } while (--w != 0);
+#endif
+}
+
+#undef DEPTH
+#undef BPP
+#undef PIXEL_TYPE
projects / qemu.git / commitdiff