Move the VT100 terminal emulation code into dedicated ui/vt100.c and
ui/vt100.h files, completing the extraction from console-vc.c started
in the previous patches. This makes the VT100 layer a self-contained
module that can be reused independently of the chardev/console
infrastructure.
The code is moved as-is, with minor coding style fixes (adding missing
braces, fixing whitespace) applied during the move.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
ui/console-priv.h | 1 -
ui/vt100.h | 92 +++++
ui/console-vc-stubs.c | 1 +
ui/console-vc.c | 1035 +------------------------------------------------
ui/console.c | 2 +
ui/vt100.c | 987 ++++++++++++++++++++++++++++++++++++++++++++++
ui/meson.build | 4 +-
7 files changed, 1086 insertions(+), 1036 deletions(-)
diff --git a/ui/console-priv.h b/ui/console-priv.h
index 39798c3e9d7..f8855753e30 100644
--- a/ui/console-priv.h
+++ b/ui/console-priv.h
@@ -31,7 +31,6 @@ struct QemuConsole {
};
void qemu_text_console_update_size(QemuTextConsole *c);
-void vt100_update_cursor(void);
void qemu_text_console_handle_keysym(QemuTextConsole *s, int keysym);
#endif
diff --git a/ui/vt100.h b/ui/vt100.h
new file mode 100644
index 00000000000..18e5320766b
--- /dev/null
+++ b/ui/vt100.h
@@ -0,0 +1,92 @@
+/*
+ * SPDX-License-Identifier: MIT
+ * QEMU vt100
+ */
+#ifndef VT100_H
+#define VT100_H
+
+#include "ui/console.h"
+#include "qemu/fifo8.h"
+#include "qemu/queue.h"
+
+typedef struct TextAttributes {
+ uint8_t fgcol:4;
+ uint8_t bgcol:4;
+ uint8_t bold:1;
+ uint8_t uline:1;
+ uint8_t blink:1;
+ uint8_t invers:1;
+ uint8_t unvisible:1;
+} TextAttributes;
+
+#define TEXT_ATTRIBUTES_DEFAULT ((TextAttributes) { \
+ .fgcol = QEMU_COLOR_WHITE, \
+ .bgcol = QEMU_COLOR_BLACK \
+})
+
+typedef struct TextCell {
+ uint8_t ch;
+ TextAttributes t_attrib;
+} TextCell;
+
+#define MAX_ESC_PARAMS 3
+
+enum TTYState {
+ TTY_STATE_NORM,
+ TTY_STATE_ESC,
+ TTY_STATE_CSI,
+ TTY_STATE_G0,
+ TTY_STATE_G1,
+ TTY_STATE_OSC,
+};
+
+typedef struct QemuVT100 QemuVT100;
+
+struct QemuVT100 {
+ pixman_image_t *image;
+ void (*image_update)(QemuVT100 *vt, int x, int y, int width, int height);
+
+ int width;
+ int height;
+ int total_height;
+ int backscroll_height;
+ int x, y;
+ int y_displayed;
+ int y_base;
+ TextCell *cells;
+ int text_x[2], text_y[2], cursor_invalidate;
+ int echo;
+
+ int update_x0;
+ int update_y0;
+ int update_x1;
+ int update_y1;
+
+ enum TTYState state;
+ int esc_params[MAX_ESC_PARAMS];
+ int nb_esc_params;
+ uint32_t utf8_state; /* UTF-8 DFA decoder state */
+ uint32_t utf8_codepoint; /* accumulated UTF-8 code point */
+ TextAttributes t_attrib; /* currently active text attributes */
+ TextAttributes t_attrib_saved;
+ int x_saved, y_saved;
+ /* fifo for key pressed */
+ Fifo8 out_fifo;
+ void (*out_flush)(QemuVT100 *vt);
+
+ QTAILQ_ENTRY(QemuVT100) list;
+};
+
+void vt100_init(QemuVT100 *vt,
+ pixman_image_t *image,
+ void (*image_update)(QemuVT100 *vt, int x, int y, int width, int height),
+ void (*out_flush)(QemuVT100 *vt));
+void vt100_fini(QemuVT100 *vt);
+
+void vt100_update_cursor(void);
+int vt100_input(QemuVT100 *vt, const uint8_t *buf, int len);
+void vt100_keysym(QemuVT100 *vt, int keysym);
+void vt100_set_image(QemuVT100 *vt, pixman_image_t *image);
+void vt100_refresh(QemuVT100 *vt);
+
+#endif
diff --git a/ui/console-vc-stubs.c b/ui/console-vc-stubs.c
index d911a82f263..30e4d101197 100644
--- a/ui/console-vc-stubs.c
+++ b/ui/console-vc-stubs.c
@@ -9,6 +9,7 @@
#include "qemu/option.h"
#include "chardev/char.h"
#include "ui/console-priv.h"
+#include "vt100.h"
void qemu_text_console_update_size(QemuTextConsole *c)
{
diff --git a/ui/console-vc.c b/ui/console-vc.c
index 8e785cde94c..6e8f2552e41 100644
--- a/ui/console-vc.c
+++ b/ui/console-vc.c
@@ -6,91 +6,15 @@
#include "chardev/char.h"
#include "qapi/error.h"
-#include "qemu/fifo8.h"
#include "qemu/option.h"
-#include "qemu/queue.h"
#include "ui/console.h"
-#include "ui/cp437.h"
#include "ui/vgafont.h"
+#include "ui/vt100.h"
#include "pixman.h"
#include "trace.h"
#include "console-priv.h"
-#define DEFAULT_BACKSCROLL 512
-#define CONSOLE_CURSOR_PERIOD 500
-
-typedef struct TextAttributes {
- uint8_t fgcol:4;
- uint8_t bgcol:4;
- uint8_t bold:1;
- uint8_t uline:1;
- uint8_t blink:1;
- uint8_t invers:1;
- uint8_t unvisible:1;
-} TextAttributes;
-
-#define TEXT_ATTRIBUTES_DEFAULT ((TextAttributes) { \
- .fgcol = QEMU_COLOR_WHITE, \
- .bgcol = QEMU_COLOR_BLACK \
-})
-
-typedef struct TextCell {
- uint8_t ch;
- TextAttributes t_attrib;
-} TextCell;
-
-#define MAX_ESC_PARAMS 3
-
-enum TTYState {
- TTY_STATE_NORM,
- TTY_STATE_ESC,
- TTY_STATE_CSI,
- TTY_STATE_G0,
- TTY_STATE_G1,
- TTY_STATE_OSC,
-};
-
-typedef struct QemuVT100 QemuVT100;
-
-struct QemuVT100 {
- pixman_image_t *image;
- void (*image_update)(QemuVT100 *vt, int x, int y, int width, int height);
-
- int width;
- int height;
- int total_height;
- int backscroll_height;
- int x, y;
- int y_displayed;
- int y_base;
- TextCell *cells;
- int text_x[2], text_y[2], cursor_invalidate;
- int echo;
-
- int update_x0;
- int update_y0;
- int update_x1;
- int update_y1;
-
- enum TTYState state;
- int esc_params[MAX_ESC_PARAMS];
- int nb_esc_params;
- uint32_t utf8_state; /* UTF-8 DFA decoder state */
- uint32_t utf8_codepoint; /* accumulated UTF-8 code point */
- TextAttributes t_attrib; /* currently active text attributes */
- TextAttributes t_attrib_saved;
- int x_saved, y_saved;
- /* fifo for key pressed */
- Fifo8 out_fifo;
- void (*out_flush)(QemuVT100 *vt);
-
- QTAILQ_ENTRY(QemuVT100) list;
-};
-
-static QTAILQ_HEAD(QemuVT100Head, QemuVT100) vt100s =
- QTAILQ_HEAD_INITIALIZER(vt100s);
-
typedef struct QemuTextConsole {
QemuConsole parent;
@@ -116,32 +40,6 @@ struct VCChardev {
};
typedef struct VCChardev VCChardev;
-static const pixman_color_t color_table_rgb[2][8] = {
- { /* dark */
- [QEMU_COLOR_BLACK] = QEMU_PIXMAN_COLOR_BLACK,
- [QEMU_COLOR_BLUE] = QEMU_PIXMAN_COLOR(0x00, 0x00, 0xaa), /* blue */
- [QEMU_COLOR_GREEN] = QEMU_PIXMAN_COLOR(0x00, 0xaa, 0x00), /* green */
- [QEMU_COLOR_CYAN] = QEMU_PIXMAN_COLOR(0x00, 0xaa, 0xaa), /* cyan */
- [QEMU_COLOR_RED] = QEMU_PIXMAN_COLOR(0xaa, 0x00, 0x00), /* red */
- [QEMU_COLOR_MAGENTA] = QEMU_PIXMAN_COLOR(0xaa, 0x00, 0xaa), /* magenta */
- [QEMU_COLOR_YELLOW] = QEMU_PIXMAN_COLOR(0xaa, 0xaa, 0x00), /* yellow */
- [QEMU_COLOR_WHITE] = QEMU_PIXMAN_COLOR_GRAY,
- },
- { /* bright */
- [QEMU_COLOR_BLACK] = QEMU_PIXMAN_COLOR_BLACK,
- [QEMU_COLOR_BLUE] = QEMU_PIXMAN_COLOR(0x00, 0x00, 0xff), /* blue */
- [QEMU_COLOR_GREEN] = QEMU_PIXMAN_COLOR(0x00, 0xff, 0x00), /* green */
- [QEMU_COLOR_CYAN] = QEMU_PIXMAN_COLOR(0x00, 0xff, 0xff), /* cyan */
- [QEMU_COLOR_RED] = QEMU_PIXMAN_COLOR(0xff, 0x00, 0x00), /* red */
- [QEMU_COLOR_MAGENTA] = QEMU_PIXMAN_COLOR(0xff, 0x00, 0xff), /* magenta */
- [QEMU_COLOR_YELLOW] = QEMU_PIXMAN_COLOR(0xff, 0xff, 0x00), /* yellow */
- [QEMU_COLOR_WHITE] = QEMU_PIXMAN_COLOR(0xff, 0xff, 0xff), /* white */
- }
-};
-
-static bool cursor_visible_phase;
-static QEMUTimer *cursor_timer;
-
static char *
qemu_text_console_get_label(QemuConsole *c)
{
@@ -150,157 +48,6 @@ qemu_text_console_get_label(QemuConsole *c)
return tc->chr ? g_strdup(tc->chr->label) : NULL;
}
-static void image_fill_rect(pixman_image_t *image, int posx, int posy,
- int width, int height, pixman_color_t color)
-{
- pixman_rectangle16_t rect = {
- .x = posx, .y = posy, .width = width, .height = height
- };
-
- pixman_image_fill_rectangles(PIXMAN_OP_SRC, image, &color, 1, &rect);
-}
-
-/* copy from (xs, ys) to (xd, yd) a rectangle of size (w, h) */
-static void image_bitblt(pixman_image_t *image,
- int xs, int ys, int xd, int yd, int w, int h)
-{
- pixman_image_composite(PIXMAN_OP_SRC,
- image, NULL, image,
- xs, ys, 0, 0, xd, yd, w, h);
-}
-
-static void vt100_putcharxy(QemuVT100 *vt, int x, int y, int ch,
- TextAttributes *t_attrib)
-{
- static pixman_image_t *glyphs[256];
- pixman_color_t fgcol, bgcol;
-
- assert(vt->image);
- if (t_attrib->invers) {
- bgcol = color_table_rgb[t_attrib->bold][t_attrib->fgcol];
- fgcol = color_table_rgb[t_attrib->bold][t_attrib->bgcol];
- } else {
- fgcol = color_table_rgb[t_attrib->bold][t_attrib->fgcol];
- bgcol = color_table_rgb[t_attrib->bold][t_attrib->bgcol];
- }
-
- if (!glyphs[ch]) {
- glyphs[ch] = qemu_pixman_glyph_from_vgafont(FONT_HEIGHT, vgafont16, ch);
- }
- qemu_pixman_glyph_render(glyphs[ch], vt->image,
- &fgcol, &bgcol, x, y, FONT_WIDTH, FONT_HEIGHT);
-}
-
-static void vt100_invalidate_xy(QemuVT100 *vt, int x, int y)
-{
- if (vt->update_x0 > x * FONT_WIDTH) {
- vt->update_x0 = x * FONT_WIDTH;
- }
- if (vt->update_y0 > y * FONT_HEIGHT) {
- vt->update_y0 = y * FONT_HEIGHT;
- }
- if (vt->update_x1 < (x + 1) * FONT_WIDTH) {
- vt->update_x1 = (x + 1) * FONT_WIDTH;
- }
- if (vt->update_y1 < (y + 1) * FONT_HEIGHT) {
- vt->update_y1 = (y + 1) * FONT_HEIGHT;
- }
-}
-
-static void vt100_show_cursor(QemuVT100 *vt, int show)
-{
- TextCell *c;
- int y, y1;
- int x = vt->x;
-
- vt->cursor_invalidate = 1;
-
- if (x >= vt->width) {
- x = vt->width - 1;
- }
- y1 = (vt->y_base + vt->y) % vt->total_height;
- y = y1 - vt->y_displayed;
- if (y < 0) {
- y += vt->total_height;
- }
- if (y < vt->height) {
- c = &vt->cells[y1 * vt->width + x];
- if (show && cursor_visible_phase) {
- TextAttributes t_attrib = TEXT_ATTRIBUTES_DEFAULT;
- t_attrib.invers = !(t_attrib.invers); /* invert fg and bg */
- vt100_putcharxy(vt, x, y, c->ch, &t_attrib);
- } else {
- vt100_putcharxy(vt, x, y, c->ch, &(c->t_attrib));
- }
- vt100_invalidate_xy(vt, x, y);
- }
-}
-
-static void vt100_image_update(QemuVT100 *vt, int x, int y, int width, int height)
-{
- vt->image_update(vt, x, y, width, height);
-}
-
-static void vt100_refresh(QemuVT100 *vt)
-{
- TextCell *c;
- int x, y, y1;
- int w = pixman_image_get_width(vt->image);
- int h = pixman_image_get_height(vt->image);
-
- vt->text_x[0] = 0;
- vt->text_y[0] = 0;
- vt->text_x[1] = vt->width - 1;
- vt->text_y[1] = vt->height - 1;
- vt->cursor_invalidate = 1;
-
- image_fill_rect(vt->image, 0, 0, w, h,
- color_table_rgb[0][QEMU_COLOR_BLACK]);
- y1 = vt->y_displayed;
- for (y = 0; y < vt->height; y++) {
- c = vt->cells + y1 * vt->width;
- for (x = 0; x < vt->width; x++) {
- vt100_putcharxy(vt, x, y, c->ch,
- &(c->t_attrib));
- c++;
- }
- if (++y1 == vt->total_height) {
- y1 = 0;
- }
- }
- vt100_show_cursor(vt, 1);
- vt100_image_update(vt, 0, 0, w, h);
-}
-
-static void vt100_scroll(QemuVT100 *vt, int ydelta)
-{
- int i, y1;
-
- if (ydelta > 0) {
- for(i = 0; i < ydelta; i++) {
- if (vt->y_displayed == vt->y_base)
- break;
- if (++vt->y_displayed == vt->total_height)
- vt->y_displayed = 0;
- }
- } else {
- ydelta = -ydelta;
- i = vt->backscroll_height;
- if (i > vt->total_height - vt->height)
- i = vt->total_height - vt->height;
- y1 = vt->y_base - i;
- if (y1 < 0)
- y1 += vt->total_height;
- for(i = 0; i < ydelta; i++) {
- if (vt->y_displayed == y1)
- break;
- if (--vt->y_displayed < 0)
- vt->y_displayed = vt->total_height - 1;
- }
- }
- vt100_refresh(vt);
-}
-
static void qemu_text_console_out_flush(QemuTextConsole *s)
{
uint32_t len, avail;
@@ -318,64 +65,6 @@ static void qemu_text_console_out_flush(QemuTextConsole *s)
}
}
-static void vt100_write(QemuVT100 *vt, const void *buf, size_t len)
-{
- uint32_t num_free;
-
- num_free = fifo8_num_free(&vt->out_fifo);
- fifo8_push_all(&vt->out_fifo, buf, MIN(num_free, len));
- vt->out_flush(vt);
-}
-
-static int vt100_input(QemuVT100 *vt, const uint8_t *buf, int len);
-
-static void vt100_keysym(QemuVT100 *vt, int keysym)
-{
- uint8_t buf[16], *q;
- int c;
-
- switch(keysym) {
- case QEMU_KEY_CTRL_UP:
- vt100_scroll(vt, -1);
- break;
- case QEMU_KEY_CTRL_DOWN:
- vt100_scroll(vt, 1);
- break;
- case QEMU_KEY_CTRL_PAGEUP:
- vt100_scroll(vt, -10);
- break;
- case QEMU_KEY_CTRL_PAGEDOWN:
- vt100_scroll(vt, 10);
- break;
- default:
- /* 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 if (vt->echo && (keysym == '\r' || keysym == '\n')) {
- vt100_input(vt, (uint8_t *)"\r", 1);
- *q++ = '\n';
- } else {
- *q++ = keysym;
- }
- if (vt->echo) {
- vt100_input(vt, buf, q - buf);
- }
- vt100_write(vt, buf, q - buf);
- break;
- }
-
-}
/* called when an ascii key is pressed */
void qemu_text_console_handle_keysym(QemuTextConsole *s, int keysym)
{
@@ -410,682 +99,10 @@ static void text_console_update(void *opaque, uint32_t *chardata)
}
}
-static void vt100_set_image(QemuVT100 *vt, pixman_image_t *image)
-{
- TextCell *cells, *c, *c1;
- int w1, x, y, last_width, w, h;
-
- vt->image = image;
- w = pixman_image_get_width(image) / FONT_WIDTH;
- h = pixman_image_get_height(image) / FONT_HEIGHT;
- if (w == vt->width && h == vt->height) {
- return;
- }
-
- last_width = vt->width;
- vt->width = w;
- vt->height = h;
-
- w1 = MIN(vt->width, last_width);
-
- cells = g_new(TextCell, vt->width * vt->total_height + 1);
- for (y = 0; y < vt->total_height; y++) {
- c = &cells[y * vt->width];
- if (w1 > 0) {
- c1 = &vt->cells[y * last_width];
- for (x = 0; x < w1; x++) {
- *c++ = *c1++;
- }
- }
- for (x = w1; x < vt->width; x++) {
- c->ch = ' ';
- c->t_attrib = TEXT_ATTRIBUTES_DEFAULT;
- c++;
- }
- }
- g_free(vt->cells);
- vt->cells = cells;
-}
-
-static void vt100_put_lf(QemuVT100 *vt)
-{
- TextCell *c;
- int x, y1;
-
- vt->y++;
- if (vt->y >= vt->height) {
- vt->y = vt->height - 1;
-
- if (vt->y_displayed == vt->y_base) {
- if (++vt->y_displayed == vt->total_height)
- vt->y_displayed = 0;
- }
- if (++vt->y_base == vt->total_height)
- vt->y_base = 0;
- if (vt->backscroll_height < vt->total_height)
- vt->backscroll_height++;
- y1 = (vt->y_base + vt->height - 1) % vt->total_height;
- c = &vt->cells[y1 * vt->width];
- for(x = 0; x < vt->width; x++) {
- c->ch = ' ';
- c->t_attrib = TEXT_ATTRIBUTES_DEFAULT;
- c++;
- }
- if (vt->y_displayed == vt->y_base) {
- vt->text_x[0] = 0;
- vt->text_y[0] = 0;
- vt->text_x[1] = vt->width - 1;
- vt->text_y[1] = vt->height - 1;
-
- image_bitblt(vt->image, 0, FONT_HEIGHT, 0, 0,
- vt->width * FONT_WIDTH,
- (vt->height - 1) * FONT_HEIGHT);
- image_fill_rect(vt->image, 0, (vt->height - 1) * FONT_HEIGHT,
- vt->width * FONT_WIDTH, FONT_HEIGHT,
- color_table_rgb[0][TEXT_ATTRIBUTES_DEFAULT.bgcol]);
- vt->update_x0 = 0;
- vt->update_y0 = 0;
- vt->update_x1 = vt->width * FONT_WIDTH;
- vt->update_y1 = vt->height * FONT_HEIGHT;
- }
- }
-}
-
-/* Set console attributes depending on the current escape codes.
- * NOTE: I know this code is not very efficient (checking every color for it
- * self) but it is more readable and better maintainable.
- */
-static void vt100_handle_escape(QemuVT100 *vt)
-{
- int i;
-
- for (i = 0; i < vt->nb_esc_params; i++) {
- switch (vt->esc_params[i]) {
- case 0: /* reset all console attributes to default */
- vt->t_attrib = TEXT_ATTRIBUTES_DEFAULT;
- break;
- case 1:
- vt->t_attrib.bold = 1;
- break;
- case 4:
- vt->t_attrib.uline = 1;
- break;
- case 5:
- vt->t_attrib.blink = 1;
- break;
- case 7:
- vt->t_attrib.invers = 1;
- break;
- case 8:
- vt->t_attrib.unvisible = 1;
- break;
- case 22:
- vt->t_attrib.bold = 0;
- break;
- case 24:
- vt->t_attrib.uline = 0;
- break;
- case 25:
- vt->t_attrib.blink = 0;
- break;
- case 27:
- vt->t_attrib.invers = 0;
- break;
- case 28:
- vt->t_attrib.unvisible = 0;
- break;
- /* set foreground color */
- case 30:
- vt->t_attrib.fgcol = QEMU_COLOR_BLACK;
- break;
- case 31:
- vt->t_attrib.fgcol = QEMU_COLOR_RED;
- break;
- case 32:
- vt->t_attrib.fgcol = QEMU_COLOR_GREEN;
- break;
- case 33:
- vt->t_attrib.fgcol = QEMU_COLOR_YELLOW;
- break;
- case 34:
- vt->t_attrib.fgcol = QEMU_COLOR_BLUE;
- break;
- case 35:
- vt->t_attrib.fgcol = QEMU_COLOR_MAGENTA;
- break;
- case 36:
- vt->t_attrib.fgcol = QEMU_COLOR_CYAN;
- break;
- case 37:
- vt->t_attrib.fgcol = QEMU_COLOR_WHITE;
- break;
- /* set background color */
- case 40:
- vt->t_attrib.bgcol = QEMU_COLOR_BLACK;
- break;
- case 41:
- vt->t_attrib.bgcol = QEMU_COLOR_RED;
- break;
- case 42:
- vt->t_attrib.bgcol = QEMU_COLOR_GREEN;
- break;
- case 43:
- vt->t_attrib.bgcol = QEMU_COLOR_YELLOW;
- break;
- case 44:
- vt->t_attrib.bgcol = QEMU_COLOR_BLUE;
- break;
- case 45:
- vt->t_attrib.bgcol = QEMU_COLOR_MAGENTA;
- break;
- case 46:
- vt->t_attrib.bgcol = QEMU_COLOR_CYAN;
- break;
- case 47:
- vt->t_attrib.bgcol = QEMU_COLOR_WHITE;
- break;
- }
- }
-}
-
-static void vt100_update_xy(QemuVT100 *vt, int x, int y)
-{
- TextCell *c;
- int y1, y2;
-
- vt->text_x[0] = MIN(vt->text_x[0], x);
- vt->text_x[1] = MAX(vt->text_x[1], x);
- vt->text_y[0] = MIN(vt->text_y[0], y);
- vt->text_y[1] = MAX(vt->text_y[1], y);
-
- y1 = (vt->y_base + y) % vt->total_height;
- y2 = y1 - vt->y_displayed;
- if (y2 < 0) {
- y2 += vt->total_height;
- }
- if (y2 < vt->height) {
- if (x >= vt->width) {
- x = vt->width - 1;
- }
- c = &vt->cells[y1 * vt->width + x];
- vt100_putcharxy(vt, x, y2, c->ch,
- &(c->t_attrib));
- vt100_invalidate_xy(vt, x, y2);
- }
-}
-
-static void vt100_clear_xy(QemuVT100 *vt, int x, int y)
-{
- int y1 = (vt->y_base + y) % vt->total_height;
- if (x >= vt->width) {
- x = vt->width - 1;
- }
- TextCell *c = &vt->cells[y1 * vt->width + x];
- c->ch = ' ';
- c->t_attrib = TEXT_ATTRIBUTES_DEFAULT;
- vt100_update_xy(vt, x, y);
-}
-
-/*
- * UTF-8 DFA decoder by Bjoern Hoehrmann.
- * Copyright (c) 2008-2010 Bjoern Hoehrmann <bjoern@hoehrmann.de>
- * See https://github.com/polijan/utf8_decode for details.
- *
- * SPDX-License-Identifier: MIT
- */
-#define UTF8_ACCEPT 0
-#define UTF8_REJECT 12
-
-static const uint8_t utf8d[] = {
- /* character class lookup */
- 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
- 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
- 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
- 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
- 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
- 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
- 8,8,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
- 10,3,3,3,3,3,3,3,3,3,3,3,3,4,3,3, 11,6,6,6,5,8,8,8,8,8,8,8,8,8,8,8,
-
- /* state transition lookup */
- 0,12,24,36,60,96,84,12,12,12,48,72, 12,12,12,12,12,12,12,12,12,12,12,12,
- 12, 0,12,12,12,12,12, 0,12, 0,12,12, 12,24,12,12,12,12,12,24,12,24,12,12,
- 12,12,12,12,12,12,12,24,12,12,12,12, 12,24,12,12,12,12,12,12,12,24,12,12,
- 12,12,12,12,12,12,12,36,12,36,12,12, 12,36,12,12,12,12,12,36,12,36,12,12,
- 12,36,12,12,12,12,12,12,12,12,12,12,
-};
-
-static uint32_t utf8_decode(uint32_t *state, uint32_t *codep, uint32_t byte)
-{
- uint32_t type = utf8d[byte];
-
- *codep = (*state != UTF8_ACCEPT) ?
- (byte & 0x3fu) | (*codep << 6) :
- (0xffu >> type) & (byte);
-
- *state = utf8d[256 + *state + type];
- return *state;
-}
-
-static void vt100_put_one(QemuVT100 *vt, int ch)
-{
- TextCell *c;
- int y1;
- if (vt->x >= vt->width) {
- /* line wrap */
- vt->x = 0;
- vt100_put_lf(vt);
- }
- y1 = (vt->y_base + vt->y) % vt->total_height;
- c = &vt->cells[y1 * vt->width + vt->x];
- c->ch = ch;
- c->t_attrib = vt->t_attrib;
- vt100_update_xy(vt, vt->x, vt->y);
- vt->x++;
-}
-
-/* set cursor, checking bounds */
-static void vt100_set_cursor(QemuVT100 *vt, int x, int y)
-{
- if (x < 0) {
- x = 0;
- }
- if (y < 0) {
- y = 0;
- }
- if (y >= vt->height) {
- y = vt->height - 1;
- }
- if (x >= vt->width) {
- x = vt->width - 1;
- }
-
- vt->x = x;
- vt->y = y;
-}
-
-/**
- * vc_csi_P() - (DCH) deletes one or more characters from the cursor
- * position to the right. As characters are deleted, the remaining
- * characters between the cursor and right margin move to the
- * left. Character attributes move with the characters.
- */
-static void vt100_csi_P(QemuVT100 *vt, unsigned int nr)
-{
- TextCell *c1, *c2;
- unsigned int x1, x2, y;
- unsigned int end, len;
-
- if (!nr) {
- nr = 1;
- }
- if (nr > vt->width - vt->x) {
- nr = vt->width - vt->x;
- if (!nr) {
- return;
- }
- }
-
- x1 = vt->x;
- x2 = vt->x + nr;
- len = vt->width - x2;
- if (len) {
- y = (vt->y_base + vt->y) % vt->total_height;
- c1 = &vt->cells[y * vt->width + x1];
- c2 = &vt->cells[y * vt->width + x2];
- memmove(c1, c2, len * sizeof(*c1));
- for (end = x1 + len; x1 < end; x1++) {
- vt100_update_xy(vt, x1, vt->y);
- }
- }
- /* Clear the rest */
- for (; x1 < vt->width; x1++) {
- vt100_clear_xy(vt, x1, vt->y);
- }
-}
-
-/**
- * vc_csi_at() - (ICH) inserts `nr` blank characters with the default
- * character attribute. The cursor remains at the beginning of the
- * blank characters. Text between the cursor and right margin moves to
- * the right. Characters scrolled past the right margin are lost.
- */
-static void vt100_csi_at(QemuVT100 *vt, unsigned int nr)
-{
- TextCell *c1, *c2;
- unsigned int x1, x2, y;
- unsigned int end, len;
-
- if (!nr) {
- nr = 1;
- }
- if (nr > vt->width - vt->x) {
- nr = vt->width - vt->x;
- if (!nr) {
- return;
- }
- }
-
- x1 = vt->x + nr;
- x2 = vt->x;
- len = vt->width - x1;
- if (len) {
- y = (vt->y_base + vt->y) % vt->total_height;
- c1 = &vt->cells[y * vt->width + x1];
- c2 = &vt->cells[y * vt->width + x2];
- memmove(c1, c2, len * sizeof(*c1));
- for (end = x1 + len; x1 < end; x1++) {
- vt100_update_xy(vt, x1, vt->y);
- }
- }
- /* Insert blanks */
- for (x1 = vt->x; x1 < vt->x + nr; x1++) {
- vt100_clear_xy(vt, x1, vt->y);
- }
-}
-
-/**
- * vt100_save_cursor() - saves cursor position and character attributes.
- */
-static void vt100_save_cursor(QemuVT100 *vt)
-{
- vt->x_saved = vt->x;
- vt->y_saved = vt->y;
- vt->t_attrib_saved = vt->t_attrib;
-}
-
-/**
- * vt100_restore_cursor() - restores cursor position and character
- * attributes from saved state.
- */
-static void vt100_restore_cursor(QemuVT100 *vt)
-{
- vt->x = vt->x_saved;
- vt->y = vt->y_saved;
- vt->t_attrib = vt->t_attrib_saved;
-}
-
-static void vt100_putchar(QemuVT100 *vt, int ch)
-{
- int i;
- int x, y;
- g_autofree char *response = NULL;
-
- switch (vt->state) {
- case TTY_STATE_NORM:
- /* Feed byte through the UTF-8 DFA decoder */
- if (ch >= 0x80) {
- switch (utf8_decode(&vt->utf8_state, &vt->utf8_codepoint, ch)) {
- case UTF8_ACCEPT:
- vt100_put_one(vt, unicode_to_cp437(vt->utf8_codepoint));
- break;
- case UTF8_REJECT:
- /* Reset state so the decoder can resync */
- vt->utf8_state = UTF8_ACCEPT;
- break;
- default:
- /* Need more bytes */
- break;
- }
- break;
- }
- /* ASCII byte: abort any pending UTF-8 sequence */
- vt->utf8_state = UTF8_ACCEPT;
- switch(ch) {
- case '\r': /* carriage return */
- vt->x = 0;
- break;
- case '\n': /* newline */
- vt100_put_lf(vt);
- break;
- case '\b': /* backspace */
- if (vt->x > 0)
- vt->x--;
- break;
- case '\t': /* tabspace */
- if (vt->x + (8 - (vt->x % 8)) > vt->width) {
- vt->x = 0;
- vt100_put_lf(vt);
- } else {
- vt->x = vt->x + (8 - (vt->x % 8));
- }
- break;
- case '\a': /* alert aka. bell */
- /* TODO: has to be implemented */
- break;
- case 14:
- /* SO (shift out), character set 1 (ignored) */
- break;
- case 15:
- /* SI (shift in), character set 0 (ignored) */
- break;
- case 27: /* esc (introducing an escape sequence) */
- vt->state = TTY_STATE_ESC;
- break;
- default:
- vt100_put_one(vt, ch);
- break;
- }
- break;
- case TTY_STATE_ESC: /* check if it is a terminal escape sequence */
- if (ch == '[') {
- for(i=0;i<MAX_ESC_PARAMS;i++)
- vt->esc_params[i] = 0;
- vt->nb_esc_params = 0;
- vt->state = TTY_STATE_CSI;
- } else if (ch == '(') {
- vt->state = TTY_STATE_G0;
- } else if (ch == ')') {
- vt->state = TTY_STATE_G1;
- } else if (ch == ']' || ch == 'P' || ch == 'X'
- || ch == '^' || ch == '_') {
- /* String sequences: OSC, DCS, SOS, PM, APC */
- vt->state = TTY_STATE_OSC;
- } else if (ch == '7') {
- vt100_save_cursor(vt);
- vt->state = TTY_STATE_NORM;
- } else if (ch == '8') {
- vt100_restore_cursor(vt);
- vt->state = TTY_STATE_NORM;
- } else {
- vt->state = TTY_STATE_NORM;
- }
- break;
- case TTY_STATE_CSI: /* handle escape sequence parameters */
- if (ch >= '0' && ch <= '9') {
- if (vt->nb_esc_params < MAX_ESC_PARAMS) {
- int *param = &vt->esc_params[vt->nb_esc_params];
- int digit = (ch - '0');
-
- *param = (*param <= (INT_MAX - digit) / 10) ?
- *param * 10 + digit : INT_MAX;
- }
- } else {
- if (vt->nb_esc_params < MAX_ESC_PARAMS)
- vt->nb_esc_params++;
- if (ch == ';' || ch == '?') {
- break;
- }
- trace_console_putchar_csi(vt->esc_params[0], vt->esc_params[1],
- ch, vt->nb_esc_params);
- vt->state = TTY_STATE_NORM;
- switch(ch) {
- case 'A':
- /* move cursor up */
- if (vt->esc_params[0] == 0) {
- vt->esc_params[0] = 1;
- }
- vt100_set_cursor(vt, vt->x, vt->y - vt->esc_params[0]);
- break;
- case 'B':
- /* move cursor down */
- if (vt->esc_params[0] == 0) {
- vt->esc_params[0] = 1;
- }
- vt100_set_cursor(vt, vt->x, vt->y + vt->esc_params[0]);
- break;
- case 'C':
- /* move cursor right */
- if (vt->esc_params[0] == 0) {
- vt->esc_params[0] = 1;
- }
- vt100_set_cursor(vt, vt->x + vt->esc_params[0], vt->y);
- break;
- case 'D':
- /* move cursor left */
- if (vt->esc_params[0] == 0) {
- vt->esc_params[0] = 1;
- }
- vt100_set_cursor(vt, vt->x - vt->esc_params[0], vt->y);
- break;
- case 'G':
- /* move cursor to column */
- vt100_set_cursor(vt, vt->esc_params[0] - 1, vt->y);
- break;
- case 'f':
- case 'H':
- /* move cursor to row, column */
- vt100_set_cursor(vt, vt->esc_params[1] - 1, vt->esc_params[0] - 1);
- break;
- case 'J':
- switch (vt->esc_params[0]) {
- case 0:
- /* clear to end of screen */
- for (y = vt->y; y < vt->height; y++) {
- for (x = 0; x < vt->width; x++) {
- if (y == vt->y && x < vt->x) {
- continue;
- }
- vt100_clear_xy(vt, x, y);
- }
- }
- break;
- case 1:
- /* clear from beginning of screen */
- for (y = 0; y <= vt->y; y++) {
- for (x = 0; x < vt->width; x++) {
- if (y == vt->y && x > vt->x) {
- break;
- }
- vt100_clear_xy(vt, x, y);
- }
- }
- break;
- case 2:
- /* clear entire screen */
- for (y = 0; y < vt->height; y++) {
- for (x = 0; x < vt->width; x++) {
- vt100_clear_xy(vt, x, y);
- }
- }
- break;
- }
- break;
- case 'K':
- switch (vt->esc_params[0]) {
- case 0:
- /* clear to eol */
- for(x = vt->x; x < vt->width; x++) {
- vt100_clear_xy(vt, x, vt->y);
- }
- break;
- case 1:
- /* clear from beginning of line */
- for (x = 0; x <= vt->x && x < vt->width; x++) {
- vt100_clear_xy(vt, x, vt->y);
- }
- break;
- case 2:
- /* clear entire line */
- for(x = 0; x < vt->width; x++) {
- vt100_clear_xy(vt, x, vt->y);
- }
- break;
- }
- break;
- case 'P':
- vt100_csi_P(vt, vt->esc_params[0]);
- break;
- case 'm':
- vt100_handle_escape(vt);
- break;
- case 'n':
- switch (vt->esc_params[0]) {
- case 5:
- /* report console status (always succeed)*/
- vt100_write(vt, "\033[0n", 4);
- break;
- case 6:
- /* report cursor position */
- response = g_strdup_printf("\033[%d;%dR",
- vt->y + 1, vt->x + 1);
- vt100_write(vt, response, strlen(response));
- break;
- }
- break;
- case 's':
- vt100_save_cursor(vt);
- break;
- case 'u':
- vt100_restore_cursor(vt);
- break;
- case '@':
- vt100_csi_at(vt, vt->esc_params[0]);
- break;
- default:
- trace_console_putchar_unhandled(ch);
- break;
- }
- break;
- }
- break;
- case TTY_STATE_OSC: /* Operating System Command: ESC ] ... BEL/ST */
- if (ch == '\a') {
- /* BEL terminates OSC */
- vt->state = TTY_STATE_NORM;
- } else if (ch == 27) {
- /* ESC might start ST (ESC \) */
- vt->state = TTY_STATE_ESC;
- }
- /* All other bytes are silently consumed */
- break;
- case TTY_STATE_G0: /* set character sets */
- case TTY_STATE_G1: /* set character sets */
- switch (ch) {
- case 'B':
- /* Latin-1 map */
- break;
- }
- vt->state = TTY_STATE_NORM;
- break;
- }
-}
-
#define TYPE_CHARDEV_VC "chardev-vc"
DECLARE_INSTANCE_CHECKER(VCChardev, VC_CHARDEV,
TYPE_CHARDEV_VC)
-static int vt100_input(QemuVT100 *vt, const uint8_t *buf, int len)
-{
- int i;
-
- vt->update_x0 = vt->width * FONT_WIDTH;
- vt->update_y0 = vt->height * FONT_HEIGHT;
- vt->update_x1 = 0;
- vt->update_y1 = 0;
- vt100_show_cursor(vt, 0);
- for(i = 0; i < len; i++) {
- vt100_putchar(vt, buf[i]);
- }
- vt100_show_cursor(vt, 1);
- if (vt->update_x0 < vt->update_x1) {
- vt100_image_update(vt, vt->update_x0, vt->update_y0,
- vt->update_x1 - vt->update_x0,
- vt->update_y1 - vt->update_y0);
- }
- return len;
-}
-
static int vc_chr_write(Chardev *chr, const uint8_t *buf, int len)
{
VCChardev *drv = VC_CHARDEV(chr);
@@ -1094,30 +111,6 @@ static int vc_chr_write(Chardev *chr, const uint8_t *buf, int len)
return vt100_input(&s->vt, buf, len);
}
-void vt100_update_cursor(void)
-{
- QemuVT100 *vt;
-
- cursor_visible_phase = !cursor_visible_phase;
-
- if (QTAILQ_EMPTY(&vt100s)) {
- return;
- }
-
- QTAILQ_FOREACH(vt, &vt100s, list) {
- vt100_refresh(vt);
- }
-
- timer_mod(cursor_timer,
- qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + CONSOLE_CURSOR_PERIOD / 2);
-}
-
-static void
-cursor_timer_cb(void *opaque)
-{
- vt100_update_cursor();
-}
-
static void text_console_invalidate(void *opaque)
{
QemuTextConsole *s = QEMU_TEXT_CONSOLE(opaque);
@@ -1128,13 +121,6 @@ static void text_console_invalidate(void *opaque)
vt100_refresh(&s->vt);
}
-static void vt100_fini(QemuVT100 *vt)
-{
- QTAILQ_REMOVE(&vt100s, vt, list);
- fifo8_destroy(&vt->out_fifo);
- g_free(vt->cells);
-}
-
static void
qemu_text_console_finalize(Object *obj)
{
@@ -1213,25 +199,6 @@ static void text_console_out_flush(QemuVT100 *vt)
qemu_text_console_out_flush(console);
}
-static void vt100_init(QemuVT100 *vt,
- pixman_image_t *image,
- void (*image_update)(QemuVT100 *vt, int x, int y, int w, int h),
- void (*out_flush)(QemuVT100 *vt))
-{
- if (!cursor_timer) {
- cursor_timer = timer_new_ms(QEMU_CLOCK_REALTIME, cursor_timer_cb, NULL);
- }
-
- QTAILQ_INSERT_HEAD(&vt100s, vt, list);
- fifo8_create(&vt->out_fifo, 16);
- vt->total_height = DEFAULT_BACKSCROLL;
- vt->image_update = image_update;
- vt->out_flush = out_flush;
- /* set current text attributes to default */
- vt->t_attrib = TEXT_ATTRIBUTES_DEFAULT;
- vt100_set_image(vt, image);
-}
-
static bool vc_chr_open(Chardev *chr, ChardevBackend *backend, Error **errp)
{
ChardevVC *vc = backend->u.vc.data;
diff --git a/ui/console.c b/ui/console.c
index c997e8df572..7ffea2776ef 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -39,6 +39,8 @@
#include "system/memory.h"
#include "qom/object.h"
#include "qemu/memfd.h"
+#include "ui/vt100.h"
+#include "vgafont.h"
#include "console-priv.h"
diff --git a/ui/vt100.c b/ui/vt100.c
new file mode 100644
index 00000000000..e24c91f538c
--- /dev/null
+++ b/ui/vt100.c
@@ -0,0 +1,987 @@
+/*
+ * SPDX-License-Identifier: MIT
+ * QEMU vt100
+ */
+#include "qemu/osdep.h"
+#include "qemu/timer.h"
+#include "cp437.h"
+#include "vgafont.h"
+#include "vt100.h"
+
+#include "trace.h"
+
+#define DEFAULT_BACKSCROLL 512
+#define CONSOLE_CURSOR_PERIOD 500
+
+static const pixman_color_t color_table_rgb[2][8] = {
+ { /* dark */
+ [QEMU_COLOR_BLACK] = QEMU_PIXMAN_COLOR_BLACK,
+ [QEMU_COLOR_BLUE] = QEMU_PIXMAN_COLOR(0x00, 0x00, 0xaa), /* blue */
+ [QEMU_COLOR_GREEN] = QEMU_PIXMAN_COLOR(0x00, 0xaa, 0x00), /* green */
+ [QEMU_COLOR_CYAN] = QEMU_PIXMAN_COLOR(0x00, 0xaa, 0xaa), /* cyan */
+ [QEMU_COLOR_RED] = QEMU_PIXMAN_COLOR(0xaa, 0x00, 0x00), /* red */
+ [QEMU_COLOR_MAGENTA] = QEMU_PIXMAN_COLOR(0xaa, 0x00, 0xaa), /* magenta */
+ [QEMU_COLOR_YELLOW] = QEMU_PIXMAN_COLOR(0xaa, 0xaa, 0x00), /* yellow */
+ [QEMU_COLOR_WHITE] = QEMU_PIXMAN_COLOR_GRAY,
+ },
+ { /* bright */
+ [QEMU_COLOR_BLACK] = QEMU_PIXMAN_COLOR_BLACK,
+ [QEMU_COLOR_BLUE] = QEMU_PIXMAN_COLOR(0x00, 0x00, 0xff), /* blue */
+ [QEMU_COLOR_GREEN] = QEMU_PIXMAN_COLOR(0x00, 0xff, 0x00), /* green */
+ [QEMU_COLOR_CYAN] = QEMU_PIXMAN_COLOR(0x00, 0xff, 0xff), /* cyan */
+ [QEMU_COLOR_RED] = QEMU_PIXMAN_COLOR(0xff, 0x00, 0x00), /* red */
+ [QEMU_COLOR_MAGENTA] = QEMU_PIXMAN_COLOR(0xff, 0x00, 0xff), /* magenta */
+ [QEMU_COLOR_YELLOW] = QEMU_PIXMAN_COLOR(0xff, 0xff, 0x00), /* yellow */
+ [QEMU_COLOR_WHITE] = QEMU_PIXMAN_COLOR(0xff, 0xff, 0xff), /* white */
+ }
+};
+
+static bool cursor_visible_phase;
+static QEMUTimer *cursor_timer;
+static QTAILQ_HEAD(QemuVT100Head, QemuVT100) vt100s =
+ QTAILQ_HEAD_INITIALIZER(vt100s);
+
+static void image_fill_rect(pixman_image_t *image, int posx, int posy,
+ int width, int height, pixman_color_t color)
+{
+ pixman_rectangle16_t rect = {
+ .x = posx, .y = posy, .width = width, .height = height
+ };
+
+ pixman_image_fill_rectangles(PIXMAN_OP_SRC, image,
+ &color, 1, &rect);
+}
+
+/* copy from (xs, ys) to (xd, yd) a rectangle of size (w, h) */
+static void image_bitblt(pixman_image_t *image,
+ int xs, int ys, int xd, int yd, int w, int h)
+{
+ pixman_image_composite(PIXMAN_OP_SRC,
+ image, NULL, image,
+ xs, ys, 0, 0, xd, yd, w, h);
+}
+
+static void vt100_putcharxy(QemuVT100 *vt, int x, int y, int ch,
+ TextAttributes *t_attrib)
+{
+ static pixman_image_t *glyphs[256];
+ pixman_color_t fgcol, bgcol;
+
+ assert(vt->image);
+ if (t_attrib->invers) {
+ bgcol = color_table_rgb[t_attrib->bold][t_attrib->fgcol];
+ fgcol = color_table_rgb[t_attrib->bold][t_attrib->bgcol];
+ } else {
+ fgcol = color_table_rgb[t_attrib->bold][t_attrib->fgcol];
+ bgcol = color_table_rgb[t_attrib->bold][t_attrib->bgcol];
+ }
+
+ if (!glyphs[ch]) {
+ glyphs[ch] = qemu_pixman_glyph_from_vgafont(FONT_HEIGHT, vgafont16, ch);
+ }
+ qemu_pixman_glyph_render(glyphs[ch], vt->image,
+ &fgcol, &bgcol, x, y, FONT_WIDTH, FONT_HEIGHT);
+}
+
+static void vt100_invalidate_xy(QemuVT100 *vt, int x, int y)
+{
+ if (vt->update_x0 > x * FONT_WIDTH) {
+ vt->update_x0 = x * FONT_WIDTH;
+ }
+ if (vt->update_y0 > y * FONT_HEIGHT) {
+ vt->update_y0 = y * FONT_HEIGHT;
+ }
+ if (vt->update_x1 < (x + 1) * FONT_WIDTH) {
+ vt->update_x1 = (x + 1) * FONT_WIDTH;
+ }
+ if (vt->update_y1 < (y + 1) * FONT_HEIGHT) {
+ vt->update_y1 = (y + 1) * FONT_HEIGHT;
+ }
+}
+
+static void vt100_show_cursor(QemuVT100 *vt, int show)
+{
+ TextCell *c;
+ int y, y1;
+ int x = vt->x;
+
+ vt->cursor_invalidate = 1;
+
+ if (x >= vt->width) {
+ x = vt->width - 1;
+ }
+ y1 = (vt->y_base + vt->y) % vt->total_height;
+ y = y1 - vt->y_displayed;
+ if (y < 0) {
+ y += vt->total_height;
+ }
+ if (y < vt->height) {
+ c = &vt->cells[y1 * vt->width + x];
+ if (show && cursor_visible_phase) {
+ TextAttributes t_attrib = TEXT_ATTRIBUTES_DEFAULT;
+ t_attrib.invers = !(t_attrib.invers); /* invert fg and bg */
+ vt100_putcharxy(vt, x, y, c->ch, &t_attrib);
+ } else {
+ vt100_putcharxy(vt, x, y, c->ch, &(c->t_attrib));
+ }
+ vt100_invalidate_xy(vt, x, y);
+ }
+}
+
+static void vt100_image_update(QemuVT100 *vt, int x, int y, int width, int height)
+{
+ vt->image_update(vt, x, y, width, height);
+}
+
+void vt100_refresh(QemuVT100 *vt)
+{
+ TextCell *c;
+ int x, y, y1;
+ int w = pixman_image_get_width(vt->image);
+ int h = pixman_image_get_height(vt->image);
+
+ vt->text_x[0] = 0;
+ vt->text_y[0] = 0;
+ vt->text_x[1] = vt->width - 1;
+ vt->text_y[1] = vt->height - 1;
+ vt->cursor_invalidate = 1;
+
+ image_fill_rect(vt->image, 0, 0, w, h,
+ color_table_rgb[0][QEMU_COLOR_BLACK]);
+ y1 = vt->y_displayed;
+ for (y = 0; y < vt->height; y++) {
+ c = vt->cells + y1 * vt->width;
+ for (x = 0; x < vt->width; x++) {
+ vt100_putcharxy(vt, x, y, c->ch,
+ &(c->t_attrib));
+ c++;
+ }
+ if (++y1 == vt->total_height) {
+ y1 = 0;
+ }
+ }
+ vt100_show_cursor(vt, 1);
+ vt100_image_update(vt, 0, 0, w, h);
+}
+
+static void vt100_scroll(QemuVT100 *vt, int ydelta)
+{
+ int i, y1;
+
+ if (ydelta > 0) {
+ for (i = 0; i < ydelta; i++) {
+ if (vt->y_displayed == vt->y_base) {
+ break;
+ }
+ if (++vt->y_displayed == vt->total_height) {
+ vt->y_displayed = 0;
+ }
+ }
+ } else {
+ ydelta = -ydelta;
+ i = vt->backscroll_height;
+ if (i > vt->total_height - vt->height) {
+ i = vt->total_height - vt->height;
+ }
+ y1 = vt->y_base - i;
+ if (y1 < 0) {
+ y1 += vt->total_height;
+ }
+ for (i = 0; i < ydelta; i++) {
+ if (vt->y_displayed == y1) {
+ break;
+ }
+ if (--vt->y_displayed < 0) {
+ vt->y_displayed = vt->total_height - 1;
+ }
+ }
+ }
+ vt100_refresh(vt);
+}
+
+static void vt100_write(QemuVT100 *vt, const void *buf, size_t len)
+{
+ uint32_t num_free;
+
+ num_free = fifo8_num_free(&vt->out_fifo);
+ fifo8_push_all(&vt->out_fifo, buf, MIN(num_free, len));
+ vt->out_flush(vt);
+}
+
+void vt100_set_image(QemuVT100 *vt, pixman_image_t *image)
+{
+ TextCell *cells, *c, *c1;
+ int w1, x, y, last_width, w, h;
+
+ vt->image = image;
+ w = pixman_image_get_width(vt->image) / FONT_WIDTH;
+ h = pixman_image_get_height(vt->image) / FONT_HEIGHT;
+ if (w == vt->width && h == vt->height) {
+ return;
+ }
+
+ last_width = vt->width;
+ vt->width = w;
+ vt->height = h;
+
+ w1 = MIN(vt->width, last_width);
+
+ cells = g_new(TextCell, vt->width * vt->total_height + 1);
+ for (y = 0; y < vt->total_height; y++) {
+ c = &cells[y * vt->width];
+ if (w1 > 0) {
+ c1 = &vt->cells[y * last_width];
+ for (x = 0; x < w1; x++) {
+ *c++ = *c1++;
+ }
+ }
+ for (x = w1; x < vt->width; x++) {
+ c->ch = ' ';
+ c->t_attrib = TEXT_ATTRIBUTES_DEFAULT;
+ c++;
+ }
+ }
+ g_free(vt->cells);
+ vt->cells = cells;
+}
+
+static void vt100_put_lf(QemuVT100 *vt)
+{
+ TextCell *c;
+ int x, y1;
+
+ vt->y++;
+ if (vt->y >= vt->height) {
+ vt->y = vt->height - 1;
+
+ if (vt->y_displayed == vt->y_base) {
+ if (++vt->y_displayed == vt->total_height) {
+ vt->y_displayed = 0;
+ }
+ }
+ if (++vt->y_base == vt->total_height) {
+ vt->y_base = 0;
+ }
+ if (vt->backscroll_height < vt->total_height) {
+ vt->backscroll_height++;
+ }
+ y1 = (vt->y_base + vt->height - 1) % vt->total_height;
+ c = &vt->cells[y1 * vt->width];
+ for (x = 0; x < vt->width; x++) {
+ c->ch = ' ';
+ c->t_attrib = TEXT_ATTRIBUTES_DEFAULT;
+ c++;
+ }
+ if (vt->y_displayed == vt->y_base) {
+ vt->text_x[0] = 0;
+ vt->text_y[0] = 0;
+ vt->text_x[1] = vt->width - 1;
+ vt->text_y[1] = vt->height - 1;
+
+ image_bitblt(vt->image, 0, FONT_HEIGHT, 0, 0,
+ vt->width * FONT_WIDTH,
+ (vt->height - 1) * FONT_HEIGHT);
+ image_fill_rect(vt->image, 0, (vt->height - 1) * FONT_HEIGHT,
+ vt->width * FONT_WIDTH, FONT_HEIGHT,
+ color_table_rgb[0][TEXT_ATTRIBUTES_DEFAULT.bgcol]);
+ vt->update_x0 = 0;
+ vt->update_y0 = 0;
+ vt->update_x1 = vt->width * FONT_WIDTH;
+ vt->update_y1 = vt->height * FONT_HEIGHT;
+ }
+ }
+}
+
+/*
+ * Set console attributes depending on the current escape codes.
+ * NOTE: I know this code is not very efficient (checking every color for it
+ * self) but it is more readable and better maintainable.
+ */
+static void vt100_handle_escape(QemuVT100 *vt)
+{
+ int i;
+
+ for (i = 0; i < vt->nb_esc_params; i++) {
+ switch (vt->esc_params[i]) {
+ case 0: /* reset all console attributes to default */
+ vt->t_attrib = TEXT_ATTRIBUTES_DEFAULT;
+ break;
+ case 1:
+ vt->t_attrib.bold = 1;
+ break;
+ case 4:
+ vt->t_attrib.uline = 1;
+ break;
+ case 5:
+ vt->t_attrib.blink = 1;
+ break;
+ case 7:
+ vt->t_attrib.invers = 1;
+ break;
+ case 8:
+ vt->t_attrib.unvisible = 1;
+ break;
+ case 22:
+ vt->t_attrib.bold = 0;
+ break;
+ case 24:
+ vt->t_attrib.uline = 0;
+ break;
+ case 25:
+ vt->t_attrib.blink = 0;
+ break;
+ case 27:
+ vt->t_attrib.invers = 0;
+ break;
+ case 28:
+ vt->t_attrib.unvisible = 0;
+ break;
+ /* set foreground color */
+ case 30:
+ vt->t_attrib.fgcol = QEMU_COLOR_BLACK;
+ break;
+ case 31:
+ vt->t_attrib.fgcol = QEMU_COLOR_RED;
+ break;
+ case 32:
+ vt->t_attrib.fgcol = QEMU_COLOR_GREEN;
+ break;
+ case 33:
+ vt->t_attrib.fgcol = QEMU_COLOR_YELLOW;
+ break;
+ case 34:
+ vt->t_attrib.fgcol = QEMU_COLOR_BLUE;
+ break;
+ case 35:
+ vt->t_attrib.fgcol = QEMU_COLOR_MAGENTA;
+ break;
+ case 36:
+ vt->t_attrib.fgcol = QEMU_COLOR_CYAN;
+ break;
+ case 37:
+ vt->t_attrib.fgcol = QEMU_COLOR_WHITE;
+ break;
+ /* set background color */
+ case 40:
+ vt->t_attrib.bgcol = QEMU_COLOR_BLACK;
+ break;
+ case 41:
+ vt->t_attrib.bgcol = QEMU_COLOR_RED;
+ break;
+ case 42:
+ vt->t_attrib.bgcol = QEMU_COLOR_GREEN;
+ break;
+ case 43:
+ vt->t_attrib.bgcol = QEMU_COLOR_YELLOW;
+ break;
+ case 44:
+ vt->t_attrib.bgcol = QEMU_COLOR_BLUE;
+ break;
+ case 45:
+ vt->t_attrib.bgcol = QEMU_COLOR_MAGENTA;
+ break;
+ case 46:
+ vt->t_attrib.bgcol = QEMU_COLOR_CYAN;
+ break;
+ case 47:
+ vt->t_attrib.bgcol = QEMU_COLOR_WHITE;
+ break;
+ }
+ }
+}
+
+static void vt100_update_xy(QemuVT100 *vt, int x, int y)
+{
+ TextCell *c;
+ int y1, y2;
+
+ vt->text_x[0] = MIN(vt->text_x[0], x);
+ vt->text_x[1] = MAX(vt->text_x[1], x);
+ vt->text_y[0] = MIN(vt->text_y[0], y);
+ vt->text_y[1] = MAX(vt->text_y[1], y);
+
+ y1 = (vt->y_base + y) % vt->total_height;
+ y2 = y1 - vt->y_displayed;
+ if (y2 < 0) {
+ y2 += vt->total_height;
+ }
+ if (y2 < vt->height) {
+ if (x >= vt->width) {
+ x = vt->width - 1;
+ }
+ c = &vt->cells[y1 * vt->width + x];
+ vt100_putcharxy(vt, x, y2, c->ch,
+ &(c->t_attrib));
+ vt100_invalidate_xy(vt, x, y2);
+ }
+}
+
+static void vt100_clear_xy(QemuVT100 *vt, int x, int y)
+{
+ int y1 = (vt->y_base + y) % vt->total_height;
+ if (x >= vt->width) {
+ x = vt->width - 1;
+ }
+ TextCell *c = &vt->cells[y1 * vt->width + x];
+ c->ch = ' ';
+ c->t_attrib = TEXT_ATTRIBUTES_DEFAULT;
+ vt100_update_xy(vt, x, y);
+}
+
+/*
+ * UTF-8 DFA decoder by Bjoern Hoehrmann.
+ * Copyright (c) 2008-2010 Bjoern Hoehrmann <bjoern@hoehrmann.de>
+ * See https://github.com/polijan/utf8_decode for details.
+ *
+ * SPDX-License-Identifier: MIT
+ */
+#define UTF8_ACCEPT 0
+#define UTF8_REJECT 12
+
+static const uint8_t utf8d[] = {
+ /* character class lookup */
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
+ 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+ 8,8,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
+ 10,3,3,3,3,3,3,3,3,3,3,3,3,4,3,3, 11,6,6,6,5,8,8,8,8,8,8,8,8,8,8,8,
+
+ /* state transition lookup */
+ 0,12,24,36,60,96,84,12,12,12,48,72, 12,12,12,12,12,12,12,12,12,12,12,12,
+ 12, 0,12,12,12,12,12, 0,12, 0,12,12, 12,24,12,12,12,12,12,24,12,24,12,12,
+ 12,12,12,12,12,12,12,24,12,12,12,12, 12,24,12,12,12,12,12,12,12,24,12,12,
+ 12,12,12,12,12,12,12,36,12,36,12,12, 12,36,12,12,12,12,12,36,12,36,12,12,
+ 12,36,12,12,12,12,12,12,12,12,12,12,
+};
+
+static uint32_t utf8_decode(uint32_t *state, uint32_t *codep, uint32_t byte)
+{
+ uint32_t type = utf8d[byte];
+
+ *codep = (*state != UTF8_ACCEPT) ?
+ (byte & 0x3fu) | (*codep << 6) :
+ (0xffu >> type) & (byte);
+
+ *state = utf8d[256 + *state + type];
+ return *state;
+}
+
+static void vt100_put_one(QemuVT100 *vt, int ch)
+{
+ TextCell *c;
+ int y1;
+ if (vt->x >= vt->width) {
+ /* line wrap */
+ vt->x = 0;
+ vt100_put_lf(vt);
+ }
+ y1 = (vt->y_base + vt->y) % vt->total_height;
+ c = &vt->cells[y1 * vt->width + vt->x];
+ c->ch = ch;
+ c->t_attrib = vt->t_attrib;
+ vt100_update_xy(vt, vt->x, vt->y);
+ vt->x++;
+}
+
+/* set cursor, checking bounds */
+static void vt100_set_cursor(QemuVT100 *vt, int x, int y)
+{
+ if (x < 0) {
+ x = 0;
+ }
+ if (y < 0) {
+ y = 0;
+ }
+ if (y >= vt->height) {
+ y = vt->height - 1;
+ }
+ if (x >= vt->width) {
+ x = vt->width - 1;
+ }
+
+ vt->x = x;
+ vt->y = y;
+}
+
+/**
+ * vt100_csi_P() - (DCH) deletes one or more characters from the cursor
+ * position to the right. As characters are deleted, the remaining
+ * characters between the cursor and right margin move to the
+ * left. Character attributes move with the characters.
+ */
+static void vt100_csi_P(QemuVT100 *vt, unsigned int nr)
+{
+ TextCell *c1, *c2;
+ unsigned int x1, x2, y;
+ unsigned int end, len;
+
+ if (!nr) {
+ nr = 1;
+ }
+ if (nr > vt->width - vt->x) {
+ nr = vt->width - vt->x;
+ if (!nr) {
+ return;
+ }
+ }
+
+ x1 = vt->x;
+ x2 = vt->x + nr;
+ len = vt->width - x2;
+ if (len) {
+ y = (vt->y_base + vt->y) % vt->total_height;
+ c1 = &vt->cells[y * vt->width + x1];
+ c2 = &vt->cells[y * vt->width + x2];
+ memmove(c1, c2, len * sizeof(*c1));
+ for (end = x1 + len; x1 < end; x1++) {
+ vt100_update_xy(vt, x1, vt->y);
+ }
+ }
+ /* Clear the rest */
+ for (; x1 < vt->width; x1++) {
+ vt100_clear_xy(vt, x1, vt->y);
+ }
+}
+
+/**
+ * vt100_csi_at() - (ICH) inserts `nr` blank characters with the default
+ * character attribute. The cursor remains at the beginning of the
+ * blank characters. Text between the cursor and right margin moves to
+ * the right. Characters scrolled past the right margin are lost.
+ */
+static void vt100_csi_at(QemuVT100 *vt, unsigned int nr)
+{
+ TextCell *c1, *c2;
+ unsigned int x1, x2, y;
+ unsigned int end, len;
+
+ if (!nr) {
+ nr = 1;
+ }
+ if (nr > vt->width - vt->x) {
+ nr = vt->width - vt->x;
+ if (!nr) {
+ return;
+ }
+ }
+
+ x1 = vt->x + nr;
+ x2 = vt->x;
+ len = vt->width - x1;
+ if (len) {
+ y = (vt->y_base + vt->y) % vt->total_height;
+ c1 = &vt->cells[y * vt->width + x1];
+ c2 = &vt->cells[y * vt->width + x2];
+ memmove(c1, c2, len * sizeof(*c1));
+ for (end = x1 + len; x1 < end; x1++) {
+ vt100_update_xy(vt, x1, vt->y);
+ }
+ }
+ /* Insert blanks */
+ for (x1 = vt->x; x1 < vt->x + nr; x1++) {
+ vt100_clear_xy(vt, x1, vt->y);
+ }
+}
+
+/**
+ * vt100_save_cursor() - saves cursor position and character attributes.
+ */
+static void vt100_save_cursor(QemuVT100 *vt)
+{
+ vt->x_saved = vt->x;
+ vt->y_saved = vt->y;
+ vt->t_attrib_saved = vt->t_attrib;
+}
+
+/**
+ * vt100_restore_cursor() - restores cursor position and character
+ * attributes from saved state.
+ */
+static void vt100_restore_cursor(QemuVT100 *vt)
+{
+ vt->x = vt->x_saved;
+ vt->y = vt->y_saved;
+ vt->t_attrib = vt->t_attrib_saved;
+}
+
+static void vt100_putchar(QemuVT100 *vt, int ch)
+{
+ int i;
+ int x, y;
+ g_autofree char *response = NULL;
+
+ switch (vt->state) {
+ case TTY_STATE_NORM:
+ /* Feed byte through the UTF-8 DFA decoder */
+ if (ch >= 0x80) {
+ switch (utf8_decode(&vt->utf8_state, &vt->utf8_codepoint, ch)) {
+ case UTF8_ACCEPT:
+ vt100_put_one(vt, unicode_to_cp437(vt->utf8_codepoint));
+ break;
+ case UTF8_REJECT:
+ /* Reset state so the decoder can resync */
+ vt->utf8_state = UTF8_ACCEPT;
+ break;
+ default:
+ /* Need more bytes */
+ break;
+ }
+ break;
+ }
+ /* ASCII byte: abort any pending UTF-8 sequence */
+ vt->utf8_state = UTF8_ACCEPT;
+ switch (ch) {
+ case '\r': /* carriage return */
+ vt->x = 0;
+ break;
+ case '\n': /* newline */
+ vt100_put_lf(vt);
+ break;
+ case '\b': /* backspace */
+ if (vt->x > 0) {
+ vt->x--;
+ }
+ break;
+ case '\t': /* tabspace */
+ if (vt->x + (8 - (vt->x % 8)) > vt->width) {
+ vt->x = 0;
+ vt100_put_lf(vt);
+ } else {
+ vt->x = vt->x + (8 - (vt->x % 8));
+ }
+ break;
+ case '\a': /* alert aka. bell */
+ /* TODO: has to be implemented */
+ break;
+ case 14:
+ /* SO (shift out), character set 1 (ignored) */
+ break;
+ case 15:
+ /* SI (shift in), character set 0 (ignored) */
+ break;
+ case 27: /* esc (introducing an escape sequence) */
+ vt->state = TTY_STATE_ESC;
+ break;
+ default:
+ vt100_put_one(vt, ch);
+ break;
+ }
+ break;
+ case TTY_STATE_ESC: /* check if it is a terminal escape sequence */
+ if (ch == '[') {
+ for (i = 0; i < MAX_ESC_PARAMS; i++) {
+ vt->esc_params[i] = 0;
+ }
+ vt->nb_esc_params = 0;
+ vt->state = TTY_STATE_CSI;
+ } else if (ch == '(') {
+ vt->state = TTY_STATE_G0;
+ } else if (ch == ')') {
+ vt->state = TTY_STATE_G1;
+ } else if (ch == ']' || ch == 'P' || ch == 'X'
+ || ch == '^' || ch == '_') {
+ /* String sequences: OSC, DCS, SOS, PM, APC */
+ vt->state = TTY_STATE_OSC;
+ } else if (ch == '7') {
+ vt100_save_cursor(vt);
+ vt->state = TTY_STATE_NORM;
+ } else if (ch == '8') {
+ vt100_restore_cursor(vt);
+ vt->state = TTY_STATE_NORM;
+ } else {
+ vt->state = TTY_STATE_NORM;
+ }
+ break;
+ case TTY_STATE_CSI: /* handle escape sequence parameters */
+ if (ch >= '0' && ch <= '9') {
+ if (vt->nb_esc_params < MAX_ESC_PARAMS) {
+ int *param = &vt->esc_params[vt->nb_esc_params];
+ int digit = (ch - '0');
+
+ *param = (*param <= (INT_MAX - digit) / 10) ?
+ *param * 10 + digit : INT_MAX;
+ }
+ } else {
+ if (vt->nb_esc_params < MAX_ESC_PARAMS) {
+ vt->nb_esc_params++;
+ }
+ if (ch == ';' || ch == '?') {
+ break;
+ }
+ trace_console_putchar_csi(vt->esc_params[0], vt->esc_params[1],
+ ch, vt->nb_esc_params);
+ vt->state = TTY_STATE_NORM;
+ switch (ch) {
+ case 'A':
+ /* move cursor up */
+ if (vt->esc_params[0] == 0) {
+ vt->esc_params[0] = 1;
+ }
+ vt100_set_cursor(vt, vt->x, vt->y - vt->esc_params[0]);
+ break;
+ case 'B':
+ /* move cursor down */
+ if (vt->esc_params[0] == 0) {
+ vt->esc_params[0] = 1;
+ }
+ vt100_set_cursor(vt, vt->x, vt->y + vt->esc_params[0]);
+ break;
+ case 'C':
+ /* move cursor right */
+ if (vt->esc_params[0] == 0) {
+ vt->esc_params[0] = 1;
+ }
+ vt100_set_cursor(vt, vt->x + vt->esc_params[0], vt->y);
+ break;
+ case 'D':
+ /* move cursor left */
+ if (vt->esc_params[0] == 0) {
+ vt->esc_params[0] = 1;
+ }
+ vt100_set_cursor(vt, vt->x - vt->esc_params[0], vt->y);
+ break;
+ case 'G':
+ /* move cursor to column */
+ vt100_set_cursor(vt, vt->esc_params[0] - 1, vt->y);
+ break;
+ case 'f':
+ case 'H':
+ /* move cursor to row, column */
+ vt100_set_cursor(vt, vt->esc_params[1] - 1, vt->esc_params[0] - 1);
+ break;
+ case 'J':
+ switch (vt->esc_params[0]) {
+ case 0:
+ /* clear to end of screen */
+ for (y = vt->y; y < vt->height; y++) {
+ for (x = 0; x < vt->width; x++) {
+ if (y == vt->y && x < vt->x) {
+ continue;
+ }
+ vt100_clear_xy(vt, x, y);
+ }
+ }
+ break;
+ case 1:
+ /* clear from beginning of screen */
+ for (y = 0; y <= vt->y; y++) {
+ for (x = 0; x < vt->width; x++) {
+ if (y == vt->y && x > vt->x) {
+ break;
+ }
+ vt100_clear_xy(vt, x, y);
+ }
+ }
+ break;
+ case 2:
+ /* clear entire screen */
+ for (y = 0; y < vt->height; y++) {
+ for (x = 0; x < vt->width; x++) {
+ vt100_clear_xy(vt, x, y);
+ }
+ }
+ break;
+ }
+ break;
+ case 'K':
+ switch (vt->esc_params[0]) {
+ case 0:
+ /* clear to eol */
+ for (x = vt->x; x < vt->width; x++) {
+ vt100_clear_xy(vt, x, vt->y);
+ }
+ break;
+ case 1:
+ /* clear from beginning of line */
+ for (x = 0; x <= vt->x && x < vt->width; x++) {
+ vt100_clear_xy(vt, x, vt->y);
+ }
+ break;
+ case 2:
+ /* clear entire line */
+ for (x = 0; x < vt->width; x++) {
+ vt100_clear_xy(vt, x, vt->y);
+ }
+ break;
+ }
+ break;
+ case 'P':
+ vt100_csi_P(vt, vt->esc_params[0]);
+ break;
+ case 'm':
+ vt100_handle_escape(vt);
+ break;
+ case 'n':
+ switch (vt->esc_params[0]) {
+ case 5:
+ /* report console status (always succeed)*/
+ vt100_write(vt, "\033[0n", 4);
+ break;
+ case 6:
+ /* report cursor position */
+ response = g_strdup_printf("\033[%d;%dR",
+ vt->y + 1, vt->x + 1);
+ vt100_write(vt, response, strlen(response));
+ break;
+ }
+ break;
+ case 's':
+ vt100_save_cursor(vt);
+ break;
+ case 'u':
+ vt100_restore_cursor(vt);
+ break;
+ case '@':
+ vt100_csi_at(vt, vt->esc_params[0]);
+ break;
+ default:
+ trace_console_putchar_unhandled(ch);
+ break;
+ }
+ break;
+ }
+ break;
+ case TTY_STATE_OSC: /* Operating System Command: ESC ] ... BEL/ST */
+ if (ch == '\a') {
+ /* BEL terminates OSC */
+ vt->state = TTY_STATE_NORM;
+ } else if (ch == 27) {
+ /* ESC might start ST (ESC \) */
+ vt->state = TTY_STATE_ESC;
+ }
+ /* All other bytes are silently consumed */
+ break;
+ case TTY_STATE_G0: /* set character sets */
+ case TTY_STATE_G1: /* set character sets */
+ switch (ch) {
+ case 'B':
+ /* Latin-1 map */
+ break;
+ }
+ vt->state = TTY_STATE_NORM;
+ break;
+ }
+
+}
+
+int vt100_input(QemuVT100 *vt, const uint8_t *buf, int len)
+{
+ int i;
+
+ vt->update_x0 = vt->width * FONT_WIDTH;
+ vt->update_y0 = vt->height * FONT_HEIGHT;
+ vt->update_x1 = 0;
+ vt->update_y1 = 0;
+ vt100_show_cursor(vt, 0);
+ for (i = 0; i < len; i++) {
+ vt100_putchar(vt, buf[i]);
+ }
+ vt100_show_cursor(vt, 1);
+ if (vt->update_x0 < vt->update_x1) {
+ vt100_image_update(vt, vt->update_x0, vt->update_y0,
+ vt->update_x1 - vt->update_x0,
+ vt->update_y1 - vt->update_y0);
+ }
+ return len;
+}
+
+void vt100_keysym(QemuVT100 *vt, int keysym)
+{
+ uint8_t buf[16], *q;
+ int c;
+
+ switch (keysym) {
+ case QEMU_KEY_CTRL_UP:
+ vt100_scroll(vt, -1);
+ break;
+ case QEMU_KEY_CTRL_DOWN:
+ vt100_scroll(vt, 1);
+ break;
+ case QEMU_KEY_CTRL_PAGEUP:
+ vt100_scroll(vt, -10);
+ break;
+ case QEMU_KEY_CTRL_PAGEDOWN:
+ vt100_scroll(vt, 10);
+ break;
+ default:
+ /* 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 if (vt->echo && (keysym == '\r' || keysym == '\n')) {
+ vt100_input(vt, (uint8_t *)"\r", 1);
+ *q++ = '\n';
+ } else {
+ *q++ = keysym;
+ }
+ if (vt->echo) {
+ vt100_input(vt, buf, q - buf);
+ }
+ vt100_write(vt, buf, q - buf);
+ break;
+ }
+}
+
+void vt100_update_cursor(void)
+{
+ QemuVT100 *vt;
+
+ cursor_visible_phase = !cursor_visible_phase;
+
+ if (QTAILQ_EMPTY(&vt100s)) {
+ return;
+ }
+
+ QTAILQ_FOREACH(vt, &vt100s, list) {
+ vt100_refresh(vt);
+ }
+
+ timer_mod(cursor_timer,
+ qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + CONSOLE_CURSOR_PERIOD / 2);
+}
+
+static void
+cursor_timer_cb(void *opaque)
+{
+ vt100_update_cursor();
+}
+
+void vt100_init(QemuVT100 *vt,
+ pixman_image_t *image,
+ void (*image_update)(QemuVT100 *vt, int x, int y, int w, int h),
+ void (*out_flush)(QemuVT100 *vt))
+{
+ if (!cursor_timer) {
+ cursor_timer = timer_new_ms(QEMU_CLOCK_REALTIME, cursor_timer_cb, NULL);
+ }
+
+ QTAILQ_INSERT_HEAD(&vt100s, vt, list);
+ fifo8_create(&vt->out_fifo, 16);
+ vt->total_height = DEFAULT_BACKSCROLL;
+ vt->image_update = image_update;
+ vt->out_flush = out_flush;
+ /* set current text attributes to default */
+ vt->t_attrib = TEXT_ATTRIBUTES_DEFAULT;
+ vt100_set_image(vt, image);
+}
+
+void vt100_fini(QemuVT100 *vt)
+{
+ QTAILQ_REMOVE(&vt100s, vt, list);
+ fifo8_destroy(&vt->out_fifo);
+ g_free(vt->cells);
+}
diff --git a/ui/meson.build b/ui/meson.build
index 25657af50e7..9ece6f262b6 100644
--- a/ui/meson.build
+++ b/ui/meson.build
@@ -3,6 +3,7 @@ system_ss.add(png)
system_ss.add(files(
'clipboard.c',
'console.c',
+ 'cp437.c',
'cursor.c',
'dmabuf.c',
'input-keymap.c',
@@ -16,8 +17,9 @@ system_ss.add(files(
'ui-qmp-cmds.c',
'util.c',
'vgafont.c',
+ 'vt100.c',
))
-system_ss.add(when: pixman, if_true: files('console-vc.c', 'cp437.c'), if_false: files('console-vc-stubs.c'))
+system_ss.add(when: pixman, if_true: files('console-vc.c'), if_false: files('console-vc-stubs.c'))
if dbus_display
system_ss.add(files('dbus-module.c'))
endif
--
2.53.0
On 17/3/26 09:50, Marc-André Lureau wrote: > Move the VT100 terminal emulation code into dedicated ui/vt100.c and > ui/vt100.h files, completing the extraction from console-vc.c started > in the previous patches. This makes the VT100 layer a self-contained > module that can be reused independently of the chardev/console > infrastructure. > > The code is moved as-is, with minor coding style fixes (adding missing > braces, fixing whitespace) applied during the move. > > Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> > --- > ui/console-priv.h | 1 - > ui/vt100.h | 92 +++++ > ui/console-vc-stubs.c | 1 + > ui/console-vc.c | 1035 +------------------------------------------------ > ui/console.c | 2 + > ui/vt100.c | 987 ++++++++++++++++++++++++++++++++++++++++++++++ > ui/meson.build | 4 +- > 7 files changed, 1086 insertions(+), 1036 deletions(-) :) Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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