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-rw-r--r--console.c711
1 files changed, 711 insertions, 0 deletions
diff --git a/console.c b/console.c
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index 0000000000..b688e931cb
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+++ b/console.c
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+/*
+ * QEMU graphical console
+ *
+ * Copyright (c) 2004 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 "vl.h"
+
+#define DEFAULT_BACKSCROLL 512
+#define MAX_CONSOLES 12
+
+#define RGBA(r, g, b, a) (((a) << 24) | ((r) << 16) | ((g) << 8) | (b))
+#define RGB(r, g, b) RGBA(r, g, b, 0xff)
+
+typedef struct TextCell {
+ uint8_t ch;
+ uint8_t bgcol:4;
+ uint8_t fgcol:4;
+} TextCell;
+
+#define MAX_ESC_PARAMS 3
+
+enum TTYState {
+ TTY_STATE_NORM,
+ TTY_STATE_ESC,
+ TTY_STATE_CSI,
+};
+
+struct TextConsole {
+ int text_console; /* true if text console */
+ DisplayState *ds;
+ int g_width, g_height;
+ int width;
+ int height;
+ int total_height;
+ int backscroll_height;
+ int fgcol;
+ int bgcol;
+ int x, y;
+ int y_displayed;
+ int y_base;
+ TextCell *cells;
+
+ enum TTYState state;
+ int esc_params[MAX_ESC_PARAMS];
+ int nb_esc_params;
+
+ /* kbd read handler */
+ IOReadHandler *fd_read;
+ void *fd_opaque;
+};
+
+static TextConsole *active_console;
+static TextConsole *consoles[MAX_CONSOLES];
+static int nb_consoles = 0;
+
+/* convert a RGBA color to a color index usable in graphic primitives */
+static unsigned int vga_get_color(DisplayState *ds, unsigned int rgba)
+{
+ unsigned int r, g, b, color;
+
+ switch(ds->depth) {
+#if 0
+ case 8:
+ r = (rgba >> 16) & 0xff;
+ g = (rgba >> 8) & 0xff;
+ b = (rgba) & 0xff;
+ color = (rgb_to_index[r] * 6 * 6) +
+ (rgb_to_index[g] * 6) +
+ (rgb_to_index[b]);
+ break;
+#endif
+ case 15:
+ r = (rgba >> 16) & 0xff;
+ g = (rgba >> 8) & 0xff;
+ b = (rgba) & 0xff;
+ color = ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3);
+ break;
+ case 16:
+ r = (rgba >> 16) & 0xff;
+ g = (rgba >> 8) & 0xff;
+ b = (rgba) & 0xff;
+ color = ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
+ break;
+ case 32:
+ default:
+ color = rgba;
+ break;
+ }
+ return color;
+}
+
+static void vga_fill_rect (DisplayState *ds,
+ int posx, int posy, int width, int height, uint32_t color)
+{
+ uint8_t *d, *d1;
+ int x, y, bpp;
+
+ bpp = (ds->depth + 7) >> 3;
+ d1 = ds->data +
+ ds->linesize * posy + bpp * posx;
+ for (y = 0; y < height; y++) {
+ d = d1;
+ switch(bpp) {
+ case 1:
+ for (x = 0; x < width; x++) {
+ *((uint8_t *)d) = color;
+ d++;
+ }
+ break;
+ case 2:
+ for (x = 0; x < width; x++) {
+ *((uint16_t *)d) = color;
+ d += 2;
+ }
+ break;
+ case 4:
+ for (x = 0; x < width; x++) {
+ *((uint32_t *)d) = color;
+ d += 4;
+ }
+ break;
+ }
+ d1 += ds->linesize;
+ }
+}
+
+/* copy from (xs, ys) to (xd, yd) a rectangle of size (w, h) */
+static void vga_bitblt(DisplayState *ds, int xs, int ys, int xd, int yd, int w, int h)
+{
+ const uint8_t *s;
+ uint8_t *d;
+ int wb, y, bpp;
+
+ bpp = (ds->depth + 7) >> 3;
+ wb = w * bpp;
+ if (yd <= ys) {
+ s = ds->data +
+ ds->linesize * ys + bpp * xs;
+ d = ds->data +
+ ds->linesize * yd + bpp * xd;
+ for (y = 0; y < h; y++) {
+ memmove(d, s, wb);
+ d += ds->linesize;
+ s += ds->linesize;
+ }
+ } else {
+ s = ds->data +
+ ds->linesize * (ys + h - 1) + bpp * xs;
+ d = ds->data +
+ ds->linesize * (yd + h - 1) + bpp * xd;
+ for (y = 0; y < h; y++) {
+ memmove(d, s, wb);
+ d -= ds->linesize;
+ s -= ds->linesize;
+ }
+ }
+}
+
+/***********************************************************/
+/* basic char display */
+
+#define FONT_HEIGHT 16
+#define FONT_WIDTH 8
+
+#include "vgafont.h"
+
+#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 WORDS_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 color_table[8];
+
+static const uint32_t color_table_rgb[8] = {
+ RGB(0x00, 0x00, 0x00),
+ RGB(0xff, 0x00, 0x00),
+ RGB(0x00, 0xff, 0x00),
+ RGB(0xff, 0xff, 0x00),
+ RGB(0x00, 0x00, 0xff),
+ RGB(0xff, 0x00, 0xff),
+ RGB(0x00, 0xff, 0xff),
+ RGB(0xff, 0xff, 0xff),
+};
+
+static inline unsigned int col_expand(DisplayState *ds, unsigned int col)
+{
+ switch(ds->depth) {
+ case 8:
+ col |= col << 8;
+ col |= col << 16;
+ break;
+ case 15:
+ case 16:
+ col |= col << 16;
+ break;
+ default:
+ break;
+ }
+
+ return col;
+}
+
+static void vga_putcharxy(DisplayState *ds, int x, int y, int ch,
+ unsigned int fgcol, unsigned int bgcol)
+{
+ uint8_t *d;
+ const uint8_t *font_ptr;
+ unsigned int font_data, linesize, xorcol, bpp;
+ int i;
+
+ bpp = (ds->depth + 7) >> 3;
+ d = ds->data +
+ ds->linesize * y * FONT_HEIGHT + bpp * x * FONT_WIDTH;
+ linesize = ds->linesize;
+ font_ptr = vgafont16 + FONT_HEIGHT * ch;
+ xorcol = bgcol ^ fgcol;
+ switch(ds->depth) {
+ case 8:
+ for(i = 0; i < FONT_HEIGHT; i++) {
+ font_data = *font_ptr++;
+ ((uint32_t *)d)[0] = (dmask16[(font_data >> 4)] & xorcol) ^ bgcol;
+ ((uint32_t *)d)[1] = (dmask16[(font_data >> 0) & 0xf] & xorcol) ^ bgcol;
+ d += linesize;
+ }
+ break;
+ case 16:
+ case 15:
+ for(i = 0; i < FONT_HEIGHT; i++) {
+ font_data = *font_ptr++;
+ ((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;
+ d += linesize;
+ }
+ break;
+ case 32:
+ for(i = 0; i < FONT_HEIGHT; i++) {
+ font_data = *font_ptr++;
+ ((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;
+ d += linesize;
+ }
+ break;
+ }
+}
+
+static void text_console_resize(TextConsole *s)
+{
+ TextCell *cells, *c, *c1;
+ int w1, x, y, last_width;
+
+ last_width = s->width;
+ s->width = s->g_width / FONT_WIDTH;
+ s->height = s->g_height / FONT_HEIGHT;
+
+ w1 = last_width;
+ if (s->width < w1)
+ w1 = s->width;
+
+ cells = qemu_malloc(s->width * s->total_height * sizeof(TextCell));
+ for(y = 0; y < s->total_height; y++) {
+ c = &cells[y * s->width];
+ if (w1 > 0) {
+ c1 = &s->cells[y * last_width];
+ for(x = 0; x < w1; x++) {
+ *c++ = *c1++;
+ }
+ }
+ for(x = w1; x < s->width; x++) {
+ c->ch = ' ';
+ c->fgcol = 7;
+ c->bgcol = 0;
+ c++;
+ }
+ }
+ free(s->cells);
+ s->cells = cells;
+}
+
+static void update_xy(TextConsole *s, int x, int y)
+{
+ TextCell *c;
+ int y1, y2;
+
+ if (s == active_console) {
+ y1 = (s->y_base + y) % s->total_height;
+ y2 = y1 - s->y_displayed;
+ if (y2 < 0)
+ y2 += s->total_height;
+ if (y2 < s->height) {
+ c = &s->cells[y1 * s->width + x];
+ vga_putcharxy(s->ds, x, y2, c->ch,
+ color_table[c->fgcol], color_table[c->bgcol]);
+ dpy_update(s->ds, x * FONT_WIDTH, y2 * FONT_HEIGHT,
+ FONT_WIDTH, FONT_HEIGHT);
+ }
+ }
+}
+
+static void console_show_cursor(TextConsole *s, int show)
+{
+ TextCell *c;
+ int y, y1;
+
+ if (s == active_console) {
+ y1 = (s->y_base + s->y) % s->total_height;
+ y = y1 - s->y_displayed;
+ if (y < 0)
+ y += s->total_height;
+ if (y < s->height) {
+ c = &s->cells[y1 * s->width + s->x];
+ if (show) {
+ vga_putcharxy(s->ds, s->x, y, c->ch,
+ color_table[0], color_table[7]);
+ } else {
+ vga_putcharxy(s->ds, s->x, y, c->ch,
+ color_table[c->fgcol], color_table[c->bgcol]);
+ }
+ dpy_update(s->ds, s->x * FONT_WIDTH, y * FONT_HEIGHT,
+ FONT_WIDTH, FONT_HEIGHT);
+ }
+ }
+}
+
+static void console_refresh(TextConsole *s)
+{
+ TextCell *c;
+ int x, y, y1;
+
+ if (s != active_console)
+ return;
+
+ vga_fill_rect(s->ds, 0, 0, s->ds->width, s->ds->height,
+ color_table[0]);
+ y1 = s->y_displayed;
+ for(y = 0; y < s->height; y++) {
+ c = s->cells + y1 * s->width;
+ for(x = 0; x < s->width; x++) {
+ vga_putcharxy(s->ds, x, y, c->ch,
+ color_table[c->fgcol], color_table[c->bgcol]);
+ c++;
+ }
+ if (++y1 == s->total_height)
+ y1 = 0;
+ }
+ dpy_update(s->ds, 0, 0, s->ds->width, s->ds->height);
+ console_show_cursor(s, 1);
+}
+
+static void console_scroll(int ydelta)
+{
+ TextConsole *s;
+ int i, y1;
+
+ s = active_console;
+ if (!s || !s->text_console)
+ return;
+
+ if (ydelta > 0) {
+ for(i = 0; i < ydelta; i++) {
+ if (s->y_displayed == s->y_base)
+ break;
+ if (++s->y_displayed == s->total_height)
+ s->y_displayed = 0;
+ }
+ } else {
+ ydelta = -ydelta;
+ i = s->backscroll_height;
+ if (i > s->total_height - s->height)
+ i = s->total_height - s->height;
+ y1 = s->y_base - i;
+ if (y1 < 0)
+ y1 += s->total_height;
+ for(i = 0; i < ydelta; i++) {
+ if (s->y_displayed == y1)
+ break;
+ if (--s->y_displayed < 0)
+ s->y_displayed = s->total_height - 1;
+ }
+ }
+ console_refresh(s);
+}
+
+static void console_put_lf(TextConsole *s)
+{
+ TextCell *c;
+ int x, y1;
+
+ s->x = 0;
+ s->y++;
+ if (s->y >= s->height) {
+ s->y = s->height - 1;
+
+ if (s->y_displayed == s->y_base) {
+ if (++s->y_displayed == s->total_height)
+ s->y_displayed = 0;
+ }
+ if (++s->y_base == s->total_height)
+ s->y_base = 0;
+ if (s->backscroll_height < s->total_height)
+ s->backscroll_height++;
+ y1 = (s->y_base + s->height - 1) % s->total_height;
+ c = &s->cells[y1 * s->width];
+ for(x = 0; x < s->width; x++) {
+ c->ch = ' ';
+ c->fgcol = s->fgcol;
+ c->bgcol = s->bgcol;
+ c++;
+ }
+ if (s == active_console && s->y_displayed == s->y_base) {
+ vga_bitblt(s->ds, 0, FONT_HEIGHT, 0, 0,
+ s->width * FONT_WIDTH,
+ (s->height - 1) * FONT_HEIGHT);
+ vga_fill_rect(s->ds, 0, (s->height - 1) * FONT_HEIGHT,
+ s->width * FONT_WIDTH, FONT_HEIGHT,
+ color_table[s->bgcol]);
+ dpy_update(s->ds, 0, 0,
+ s->width * FONT_WIDTH, s->height * FONT_HEIGHT);
+ }
+ }
+}
+
+static void console_putchar(TextConsole *s, int ch)
+{
+ TextCell *c;
+ int y1, i, x;
+
+ switch(s->state) {
+ case TTY_STATE_NORM:
+ switch(ch) {
+ case '\r':
+ s->x = 0;
+ break;
+ case '\n':
+ console_put_lf(s);
+ break;
+ case 27:
+ s->state = TTY_STATE_ESC;
+ break;
+ default:
+ y1 = (s->y_base + s->y) % s->total_height;
+ c = &s->cells[y1 * s->width + s->x];
+ c->ch = ch;
+ c->fgcol = s->fgcol;
+ c->bgcol = s->bgcol;
+ update_xy(s, s->x, s->y);
+ s->x++;
+ if (s->x >= s->width)
+ console_put_lf(s);
+ break;
+ }
+ break;
+ case TTY_STATE_ESC:
+ if (ch == '[') {
+ for(i=0;i<MAX_ESC_PARAMS;i++)
+ s->esc_params[i] = 0;
+ s->nb_esc_params = 0;
+ s->state = TTY_STATE_CSI;
+ } else {
+ s->state = TTY_STATE_NORM;
+ }
+ break;
+ case TTY_STATE_CSI:
+ if (ch >= '0' && ch <= '9') {
+ if (s->nb_esc_params < MAX_ESC_PARAMS) {
+ s->esc_params[s->nb_esc_params] =
+ s->esc_params[s->nb_esc_params] * 10 + ch - '0';
+ }
+ } else {
+ s->nb_esc_params++;
+ if (ch == ';')
+ break;
+ s->state = TTY_STATE_NORM;
+ switch(ch) {
+ case 'D':
+ if (s->x > 0)
+ s->x--;
+ break;
+ case 'C':
+ if (s->x < (s->width - 1))
+ s->x++;
+ break;
+ case 'K':
+ /* clear to eol */
+ y1 = (s->y_base + s->y) % s->total_height;
+ for(x = s->x; x < s->width; x++) {
+ c = &s->cells[y1 * s->width + x];
+ c->ch = ' ';
+ c->fgcol = s->fgcol;
+ c->bgcol = s->bgcol;
+ c++;
+ update_xy(s, x, s->y);
+ }
+ break;
+ default:
+ break;
+ }
+ break;
+ }
+ }
+}
+
+void console_select(unsigned int index)
+{
+ TextConsole *s;
+
+ if (index >= MAX_CONSOLES)
+ return;
+ s = consoles[index];
+ if (s) {
+ active_console = s;
+ if (s->text_console) {
+ if (s->g_width != s->ds->width ||
+ s->g_height != s->ds->height)
+ text_console_resize(s);
+ console_refresh(s);
+ }
+ }
+}
+
+static int console_puts(CharDriverState *chr, const uint8_t *buf, int len)
+{
+ TextConsole *s = chr->opaque;
+ int i;
+
+ console_show_cursor(s, 0);
+ for(i = 0; i < len; i++) {
+ console_putchar(s, buf[i]);
+ }
+ console_show_cursor(s, 1);
+ return len;
+}
+
+static void console_chr_add_read_handler(CharDriverState *chr,
+ IOCanRWHandler *fd_can_read,
+ IOReadHandler *fd_read, void *opaque)
+{
+ TextConsole *s = chr->opaque;
+ s->fd_read = fd_read;
+ s->fd_opaque = opaque;
+}
+
+/* called when an ascii key is pressed */
+void kbd_put_keysym(int keysym)
+{
+ TextConsole *s;
+ uint8_t buf[16], *q;
+ int c;
+
+ s = active_console;
+ if (!s || !s->text_console)
+ return;
+
+ switch(keysym) {
+ case QEMU_KEY_CTRL_UP:
+ console_scroll(-1);
+ break;
+ case QEMU_KEY_CTRL_DOWN:
+ console_scroll(1);
+ break;
+ case QEMU_KEY_CTRL_PAGEUP:
+ console_scroll(-10);
+ break;
+ case QEMU_KEY_CTRL_PAGEDOWN:
+ console_scroll(10);
+ break;
+ default:
+ if (s->fd_read) {
+ /* convert the QEMU keysym to VT100 key string */
+ q = buf;
+ if (keysym >= 0xe100 && keysym <= 0xe11f) {
+ *q++ = '\033';
+ *q++ = '[';
+ c = keysym - 0xe100;
+ if (c >= 10)
+ *q++ = '0' + (c / 10);
+ *q++ = '0' + (c % 10);
+ *q++ = '~';
+ } else if (keysym >= 0xe120 && keysym <= 0xe17f) {
+ *q++ = '\033';
+ *q++ = '[';
+ *q++ = keysym & 0xff;
+ } else {
+ *q++ = keysym;
+ }
+ s->fd_read(s->fd_opaque, buf, q - buf);
+ }
+ break;
+ }
+}
+
+TextConsole *graphic_console_init(DisplayState *ds)
+{
+ TextConsole *s;
+
+ if (nb_consoles >= MAX_CONSOLES)
+ return NULL;
+ s = qemu_mallocz(sizeof(TextConsole));
+ if (!s) {
+ return NULL;
+ }
+ if (!active_console)
+ active_console = s;
+ s->ds = ds;
+ consoles[nb_consoles++] = s;
+ return s;
+}
+
+int is_active_console(TextConsole *s)
+{
+ return s == active_console;
+}
+
+CharDriverState *text_console_init(DisplayState *ds)
+{
+ CharDriverState *chr;
+ TextConsole *s;
+ int i;
+ static int color_inited;
+
+ chr = qemu_mallocz(sizeof(CharDriverState));
+ if (!chr)
+ return NULL;
+ s = graphic_console_init(ds);
+ if (!s) {
+ free(chr);
+ return NULL;
+ }
+ s->text_console = 1;
+ chr->opaque = s;
+ chr->chr_write = console_puts;
+ chr->chr_add_read_handler = console_chr_add_read_handler;
+ if (!color_inited) {
+ color_inited = 1;
+ for(i = 0; i < 8; i++) {
+ color_table[i] = col_expand(s->ds,
+ vga_get_color(s->ds, color_table_rgb[i]));
+ }
+ }
+ s->y_displayed = 0;
+ s->y_base = 0;
+ s->total_height = DEFAULT_BACKSCROLL;
+ s->x = 0;
+ s->y = 0;
+ s->fgcol = 7;
+ s->bgcol = 0;
+ s->g_width = s->ds->width;
+ s->g_height = s->ds->height;
+ text_console_resize(s);
+
+ return chr;
+}
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-23 14:13:46 +0000