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ui/console-vc: move VT100 state machine and output FIFO into QemuVT100

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Move the terminal escape sequence parser state (TTYState, esc_params,
text attributes, saved cursor position) and the output FIFO from
VCChardev/QemuTextConsole into QemuVT100. Rename the corresponding
functions from vc_* to vt100_* to reflect they now operate on the VT100
layer directly, removing the indirection through vc->console->vt.

Add an out_flush callback to QemuVT100 so vt100_write() can flush
output without knowing about QemuTextConsole, and move FIFO/VT100
initialization from qemu_text_console_init() to vc_chr_open() where
the callback can be wired up.

This continues the decoupling of VT100 terminal emulation from the
chardev layer, making QemuVT100 a self-contained terminal emulator.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
This commit is contained in:
Marc-André Lureau
2026-02-19 15:10:26 +01:00
parent 5080dc706e
commit 8fa294482e
1 changed files with 184 additions and 198 deletions
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382
ui/console-vc.c
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@@ -58,6 +58,7 @@ struct QemuVT100 {
pixman_image_t *image;
void (*image_update)(QemuVT100 *vt, int x, int y, int width, int height);
ChardevVCEncoding encoding;
int width;
int height;
int total_height;
@@ -74,6 +75,18 @@ struct QemuVT100 {
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;
};
@@ -85,8 +98,6 @@ typedef struct QemuTextConsole {
QemuVT100 vt;
Chardev *chr;
/* fifo for key pressed */
Fifo8 out_fifo;
} QemuTextConsole;
typedef QemuConsoleClass QemuTextConsoleClass;
@@ -103,17 +114,9 @@ OBJECT_DEFINE_TYPE(QemuFixedTextConsole, qemu_fixed_text_console, QEMU_FIXED_TEX
struct VCChardev {
Chardev parent;
QemuTextConsole *console;
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;
ChardevVCEncoding encoding;
QemuTextConsole *console;
};
typedef struct VCChardev VCChardev;
@@ -302,36 +305,35 @@ static void vt100_scroll(QemuVT100 *vt, int ydelta)
vt100_refresh(vt);
}
static void qemu_text_console_flush(QemuTextConsole *s)
static void qemu_text_console_out_flush(QemuTextConsole *s)
{
uint32_t len, avail;
len = qemu_chr_be_can_write(s->chr);
avail = fifo8_num_used(&s->out_fifo);
avail = fifo8_num_used(&s->vt.out_fifo);
while (len > 0 && avail > 0) {
const uint8_t *buf;
uint32_t size;
buf = fifo8_pop_bufptr(&s->out_fifo, MIN(len, avail), &size);
buf = fifo8_pop_bufptr(&s->vt.out_fifo, MIN(len, avail), &size);
qemu_chr_be_write(s->chr, buf, size);
len = qemu_chr_be_can_write(s->chr);
avail -= size;
}
}
static void qemu_text_console_write(QemuTextConsole *s, const void *buf, size_t len)
static void vt100_write(QemuVT100 *vt, const void *buf, size_t len)
{
uint32_t num_free;
num_free = fifo8_num_free(&s->out_fifo);
fifo8_push_all(&s->out_fifo, buf, MIN(num_free, len));
qemu_text_console_flush(s);
num_free = fifo8_num_free(&vt->out_fifo);
fifo8_push_all(&vt->out_fifo, buf, MIN(num_free, len));
vt->out_flush(vt);
}
/* called when an ascii key is pressed */
void qemu_text_console_handle_keysym(QemuTextConsole *s, int keysym)
{
QemuVT100 *vt = &s->vt;
uint8_t buf[16], *q;
int c;
@@ -363,16 +365,16 @@ void qemu_text_console_handle_keysym(QemuTextConsole *s, int keysym)
*q++ = '\033';
*q++ = '[';
*q++ = keysym & 0xff;
} else if (vt->echo && (keysym == '\r' || keysym == '\n')) {
} else if (s->vt.echo && (keysym == '\r' || keysym == '\n')) {
qemu_chr_write(s->chr, (uint8_t *)"\r", 1, true);
*q++ = '\n';
} else {
*q++ = keysym;
}
if (vt->echo) {
if (s->vt.echo) {
qemu_chr_write(s->chr, buf, q - buf, true);
}
qemu_text_console_write(s, buf, q - buf);
vt100_write(&s->vt, buf, q - buf);
break;
}
}
@@ -380,30 +382,29 @@ void qemu_text_console_handle_keysym(QemuTextConsole *s, int keysym)
static void text_console_update(void *opaque, console_ch_t *chardata)
{
QemuTextConsole *s = QEMU_TEXT_CONSOLE(opaque);
QemuVT100 *vt = &s->vt;
int i, j, src;
if (vt->text_x[0] <= vt->text_x[1]) {
src = (vt->y_base + vt->text_y[0]) * vt->width;
chardata += vt->text_y[0] * vt->width;
for (i = vt->text_y[0]; i <= vt->text_y[1]; i ++)
for (j = 0; j < vt->width; j++, src++) {
if (s->vt.text_x[0] <= s->vt.text_x[1]) {
src = (s->vt.y_base + s->vt.text_y[0]) * s->vt.width;
chardata += s->vt.text_y[0] * s->vt.width;
for (i = s->vt.text_y[0]; i <= s->vt.text_y[1]; i ++)
for (j = 0; j < s->vt.width; j++, src++) {
console_write_ch(chardata ++,
ATTR2CHTYPE(vt->cells[src].ch,
vt->cells[src].t_attrib.fgcol,
vt->cells[src].t_attrib.bgcol,
vt->cells[src].t_attrib.bold));
ATTR2CHTYPE(s->vt.cells[src].ch,
s->vt.cells[src].t_attrib.fgcol,
s->vt.cells[src].t_attrib.bgcol,
s->vt.cells[src].t_attrib.bold));
}
dpy_text_update(QEMU_CONSOLE(s), vt->text_x[0], vt->text_y[0],
vt->text_x[1] - vt->text_x[0], i - vt->text_y[0]);
vt->text_x[0] = vt->width;
vt->text_y[0] = vt->height;
vt->text_x[1] = 0;
vt->text_y[1] = 0;
dpy_text_update(QEMU_CONSOLE(s), s->vt.text_x[0], s->vt.text_y[0],
s->vt.text_x[1] - s->vt.text_x[0], i - s->vt.text_y[0]);
s->vt.text_x[0] = s->vt.width;
s->vt.text_y[0] = s->vt.height;
s->vt.text_x[1] = 0;
s->vt.text_y[1] = 0;
}
if (vt->cursor_invalidate) {
dpy_text_cursor(QEMU_CONSOLE(s), vt->x, vt->y);
vt->cursor_invalidate = 0;
if (s->vt.cursor_invalidate) {
dpy_text_cursor(QEMU_CONSOLE(s), s->vt.x, s->vt.y);
s->vt.cursor_invalidate = 0;
}
}
@@ -492,103 +493,101 @@ static void vt100_put_lf(QemuVT100 *vt)
* 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 vc_handle_escape(VCChardev *vc)
static void vt100_handle_escape(QemuVT100 *vt)
{
int i;
for (i = 0; i < vc->nb_esc_params; i++) {
switch (vc->esc_params[i]) {
for (i = 0; i < vt->nb_esc_params; i++) {
switch (vt->esc_params[i]) {
case 0: /* reset all console attributes to default */
vc->t_attrib = TEXT_ATTRIBUTES_DEFAULT;
vt->t_attrib = TEXT_ATTRIBUTES_DEFAULT;
break;
case 1:
vc->t_attrib.bold = 1;
vt->t_attrib.bold = 1;
break;
case 4:
vc->t_attrib.uline = 1;
vt->t_attrib.uline = 1;
break;
case 5:
vc->t_attrib.blink = 1;
vt->t_attrib.blink = 1;
break;
case 7:
vc->t_attrib.invers = 1;
vt->t_attrib.invers = 1;
break;
case 8:
vc->t_attrib.unvisible = 1;
vt->t_attrib.unvisible = 1;
break;
case 22:
vc->t_attrib.bold = 0;
vt->t_attrib.bold = 0;
break;
case 24:
vc->t_attrib.uline = 0;
vt->t_attrib.uline = 0;
break;
case 25:
vc->t_attrib.blink = 0;
vt->t_attrib.blink = 0;
break;
case 27:
vc->t_attrib.invers = 0;
vt->t_attrib.invers = 0;
break;
case 28:
vc->t_attrib.unvisible = 0;
vt->t_attrib.unvisible = 0;
break;
/* set foreground color */
case 30:
vc->t_attrib.fgcol = QEMU_COLOR_BLACK;
vt->t_attrib.fgcol = QEMU_COLOR_BLACK;
break;
case 31:
vc->t_attrib.fgcol = QEMU_COLOR_RED;
vt->t_attrib.fgcol = QEMU_COLOR_RED;
break;
case 32:
vc->t_attrib.fgcol = QEMU_COLOR_GREEN;
vt->t_attrib.fgcol = QEMU_COLOR_GREEN;
break;
case 33:
vc->t_attrib.fgcol = QEMU_COLOR_YELLOW;
vt->t_attrib.fgcol = QEMU_COLOR_YELLOW;
break;
case 34:
vc->t_attrib.fgcol = QEMU_COLOR_BLUE;
vt->t_attrib.fgcol = QEMU_COLOR_BLUE;
break;
case 35:
vc->t_attrib.fgcol = QEMU_COLOR_MAGENTA;
vt->t_attrib.fgcol = QEMU_COLOR_MAGENTA;
break;
case 36:
vc->t_attrib.fgcol = QEMU_COLOR_CYAN;
vt->t_attrib.fgcol = QEMU_COLOR_CYAN;
break;
case 37:
vc->t_attrib.fgcol = QEMU_COLOR_WHITE;
vt->t_attrib.fgcol = QEMU_COLOR_WHITE;
break;
/* set background color */
case 40:
vc->t_attrib.bgcol = QEMU_COLOR_BLACK;
vt->t_attrib.bgcol = QEMU_COLOR_BLACK;
break;
case 41:
vc->t_attrib.bgcol = QEMU_COLOR_RED;
vt->t_attrib.bgcol = QEMU_COLOR_RED;
break;
case 42:
vc->t_attrib.bgcol = QEMU_COLOR_GREEN;
vt->t_attrib.bgcol = QEMU_COLOR_GREEN;
break;
case 43:
vc->t_attrib.bgcol = QEMU_COLOR_YELLOW;
vt->t_attrib.bgcol = QEMU_COLOR_YELLOW;
break;
case 44:
vc->t_attrib.bgcol = QEMU_COLOR_BLUE;
vt->t_attrib.bgcol = QEMU_COLOR_BLUE;
break;
case 45:
vc->t_attrib.bgcol = QEMU_COLOR_MAGENTA;
vt->t_attrib.bgcol = QEMU_COLOR_MAGENTA;
break;
case 46:
vc->t_attrib.bgcol = QEMU_COLOR_CYAN;
vt->t_attrib.bgcol = QEMU_COLOR_CYAN;
break;
case 47:
vc->t_attrib.bgcol = QEMU_COLOR_WHITE;
vt->t_attrib.bgcol = QEMU_COLOR_WHITE;
break;
}
}
}
static void vc_update_xy(VCChardev *vc, int x, int y)
static void vt100_update_xy(QemuVT100 *vt, int x, int y)
{
QemuTextConsole *s = vc->console;
QemuVT100 *vt = &s->vt;
TextCell *c;
int y1, y2;
@@ -609,14 +608,12 @@ static void vc_update_xy(VCChardev *vc, int x, int y)
c = &vt->cells[y1 * vt->width + x];
vt100_putcharxy(vt, x, y2, c->ch,
&(c->t_attrib));
vt100_invalidate_xy(&s->vt, x, y2);
vt100_invalidate_xy(vt, x, y2);
}
}
static void vc_clear_xy(VCChardev *vc, int x, int y)
static void vt100_clear_xy(QemuVT100 *vt, int x, int y)
{
QemuTextConsole *s = vc->console;
QemuVT100 *vt = &s->vt;
int y1 = (vt->y_base + y) % vt->total_height;
if (x >= vt->width) {
x = vt->width - 1;
@@ -624,7 +621,7 @@ static void vc_clear_xy(VCChardev *vc, int x, int y)
TextCell *c = &vt->cells[y1 * vt->width + x];
c->ch = ' ';
c->t_attrib = TEXT_ATTRIBUTES_DEFAULT;
vc_update_xy(vc, x, y);
vt100_update_xy(vt, x, y);
}
/*
@@ -667,10 +664,8 @@ static uint32_t bh_utf8_decode(uint32_t *state, uint32_t *codep, uint32_t byte)
return *state;
}
static void vc_put_one(VCChardev *vc, int ch)
static void vt100_put_one(QemuVT100 *vt, int ch)
{
QemuTextConsole *s = vc->console;
QemuVT100 *vt = &s->vt;
TextCell *c;
int y1;
if (vt->x >= vt->width) {
@@ -681,17 +676,14 @@ static void vc_put_one(VCChardev *vc, int ch)
y1 = (vt->y_base + vt->y) % vt->total_height;
c = &vt->cells[y1 * vt->width + vt->x];
c->ch = ch;
c->t_attrib = vc->t_attrib;
vc_update_xy(vc, vt->x, vt->y);
c->t_attrib = vt->t_attrib;
vt100_update_xy(vt, vt->x, vt->y);
vt->x++;
}
/* set cursor, checking bounds */
static void vc_set_cursor(VCChardev *vc, int x, int y)
static void vt100_set_cursor(QemuVT100 *vt, int x, int y)
{
QemuTextConsole *s = vc->console;
QemuVT100 *vt = &s->vt;
if (x < 0) {
x = 0;
}
@@ -715,10 +707,8 @@ static void vc_set_cursor(VCChardev *vc, int x, int y)
* characters between the cursor and right margin move to the
* left. Character attributes move with the characters.
*/
static void vc_csi_P(struct VCChardev *vc, unsigned int nr)
static void vt100_csi_P(QemuVT100 *vt, unsigned int nr)
{
QemuTextConsole *s = vc->console;
QemuVT100 *vt = &s->vt;
TextCell *c1, *c2;
unsigned int x1, x2, y;
unsigned int end, len;
@@ -742,12 +732,12 @@ static void vc_csi_P(struct VCChardev *vc, unsigned int nr)
c2 = &vt->cells[y * vt->width + x2];
memmove(c1, c2, len * sizeof(*c1));
for (end = x1 + len; x1 < end; x1++) {
vc_update_xy(vc, x1, vt->y);
vt100_update_xy(vt, x1, vt->y);
}
}
/* Clear the rest */
for (; x1 < vt->width; x1++) {
vc_clear_xy(vc, x1, vt->y);
vt100_clear_xy(vt, x1, vt->y);
}
}
@@ -757,10 +747,8 @@ static void vc_csi_P(struct VCChardev *vc, unsigned int nr)
* blank characters. Text between the cursor and right margin moves to
* the right. Characters scrolled past the right margin are lost.
*/
static void vc_csi_at(struct VCChardev *vc, unsigned int nr)
static void vt100_csi_at(QemuVT100 *vt, unsigned int nr)
{
QemuTextConsole *s = vc->console;
QemuVT100 *vt = &s->vt;
TextCell *c1, *c2;
unsigned int x1, x2, y;
unsigned int end, len;
@@ -784,59 +772,51 @@ static void vc_csi_at(struct VCChardev *vc, unsigned int nr)
c2 = &vt->cells[y * vt->width + x2];
memmove(c1, c2, len * sizeof(*c1));
for (end = x1 + len; x1 < end; x1++) {
vc_update_xy(vc, x1, vt->y);
vt100_update_xy(vt, x1, vt->y);
}
}
/* Insert blanks */
for (x1 = vt->x; x1 < vt->x + nr; x1++) {
vc_clear_xy(vc, x1, vt->y);
vt100_clear_xy(vt, x1, vt->y);
}
}
/**
* vc_save_cursor() - saves cursor position and character attributes.
* vt100_save_cursor() - saves cursor position and character attributes.
*/
static void vc_save_cursor(VCChardev *vc)
static void vt100_save_cursor(QemuVT100 *vt)
{
QemuTextConsole *s = vc->console;
QemuVT100 *vt = &s->vt;
vc->x_saved = vt->x;
vc->y_saved = vt->y;
vc->t_attrib_saved = vc->t_attrib;
vt->x_saved = vt->x;
vt->y_saved = vt->y;
vt->t_attrib_saved = vt->t_attrib;
}
/**
* vc_restore_cursor() - restores cursor position and character
* vt100_restore_cursor() - restores cursor position and character
* attributes from saved state.
*/
static void vc_restore_cursor(VCChardev *vc)
static void vt100_restore_cursor(QemuVT100 *vt)
{
QemuTextConsole *s = vc->console;
QemuVT100 *vt = &s->vt;
vt->x = vc->x_saved;
vt->y = vc->y_saved;
vc->t_attrib = vc->t_attrib_saved;
vt->x = vt->x_saved;
vt->y = vt->y_saved;
vt->t_attrib = vt->t_attrib_saved;
}
static void vc_putchar(VCChardev *vc, int ch)
static void vt100_putchar(QemuVT100 *vt, int ch)
{
QemuTextConsole *s = vc->console;
QemuVT100 *vt = &s->vt;
int i;
int x, y;
g_autofree char *response = NULL;
switch(vc->state) {
switch (vt->state) {
case TTY_STATE_NORM:
if (ch >= 0x80 && vc->encoding == CHARDEV_VC_ENCODING_UTF8) {
switch (bh_utf8_decode(&vc->utf8_state, &vc->utf8_codepoint, ch)) {
if (ch >= 0x80 && vt->encoding == CHARDEV_VC_ENCODING_UTF8) {
switch (bh_utf8_decode(&vt->utf8_state, &vt->utf8_codepoint, ch)) {
case BH_UTF8_ACCEPT:
vc_put_one(vc, unicode_to_cp437(vc->utf8_codepoint));
vt100_put_one(vt, unicode_to_cp437(vt->utf8_codepoint));
break;
case BH_UTF8_REJECT:
vc->utf8_state = BH_UTF8_ACCEPT;
vt->utf8_state = BH_UTF8_ACCEPT;
break;
default:
/* Need more bytes */
@@ -844,14 +824,13 @@ static void vc_putchar(VCChardev *vc, int ch)
}
break;
}
/* ASCII byte: abort any pending UTF-8 sequence */
vc->utf8_state = BH_UTF8_ACCEPT;
vt->utf8_state = BH_UTF8_ACCEPT;
switch(ch) {
case '\r': /* carriage return */
vt->x = 0;
break;
case '\n': /* newline */
vt100_put_lf(&s->vt);
vt100_put_lf(vt);
break;
case '\b': /* backspace */
if (vt->x > 0)
@@ -875,95 +854,95 @@ static void vc_putchar(VCChardev *vc, int ch)
/* SI (shift in), character set 0 (ignored) */
break;
case 27: /* esc (introducing an escape sequence) */
vc->state = TTY_STATE_ESC;
vt->state = TTY_STATE_ESC;
break;
default:
vc_put_one(vc, ch);
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++)
vc->esc_params[i] = 0;
vc->nb_esc_params = 0;
vc->state = TTY_STATE_CSI;
vt->esc_params[i] = 0;
vt->nb_esc_params = 0;
vt->state = TTY_STATE_CSI;
} else if (ch == '(') {
vc->state = TTY_STATE_G0;
vt->state = TTY_STATE_G0;
} else if (ch == ')') {
vc->state = TTY_STATE_G1;
vt->state = TTY_STATE_G1;
} else if (ch == ']' || ch == 'P' || ch == 'X'
|| ch == '^' || ch == '_') {
/* String sequences: OSC, DCS, SOS, PM, APC */
vc->state = TTY_STATE_OSC;
vt->state = TTY_STATE_OSC;
} else if (ch == '7') {
vc_save_cursor(vc);
vc->state = TTY_STATE_NORM;
vt100_save_cursor(vt);
vt->state = TTY_STATE_NORM;
} else if (ch == '8') {
vc_restore_cursor(vc);
vc->state = TTY_STATE_NORM;
vt100_restore_cursor(vt);
vt->state = TTY_STATE_NORM;
} else {
vc->state = TTY_STATE_NORM;
vt->state = TTY_STATE_NORM;
}
break;
case TTY_STATE_CSI: /* handle escape sequence parameters */
if (ch >= '0' && ch <= '9') {
if (vc->nb_esc_params < MAX_ESC_PARAMS) {
int *param = &vc->esc_params[vc->nb_esc_params];
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 (vc->nb_esc_params < MAX_ESC_PARAMS)
vc->nb_esc_params++;
if (vt->nb_esc_params < MAX_ESC_PARAMS)
vt->nb_esc_params++;
if (ch == ';' || ch == '?') {
break;
}
trace_console_putchar_csi(vc->esc_params[0], vc->esc_params[1],
ch, vc->nb_esc_params);
vc->state = TTY_STATE_NORM;
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 (vc->esc_params[0] == 0) {
vc->esc_params[0] = 1;
if (vt->esc_params[0] == 0) {
vt->esc_params[0] = 1;
}
vc_set_cursor(vc, vt->x, vt->y - vc->esc_params[0]);
vt100_set_cursor(vt, vt->x, vt->y - vt->esc_params[0]);
break;
case 'B':
/* move cursor down */
if (vc->esc_params[0] == 0) {
vc->esc_params[0] = 1;
if (vt->esc_params[0] == 0) {
vt->esc_params[0] = 1;
}
vc_set_cursor(vc, vt->x, vt->y + vc->esc_params[0]);
vt100_set_cursor(vt, vt->x, vt->y + vt->esc_params[0]);
break;
case 'C':
/* move cursor right */
if (vc->esc_params[0] == 0) {
vc->esc_params[0] = 1;
if (vt->esc_params[0] == 0) {
vt->esc_params[0] = 1;
}
vc_set_cursor(vc, vt->x + vc->esc_params[0], vt->y);
vt100_set_cursor(vt, vt->x + vt->esc_params[0], vt->y);
break;
case 'D':
/* move cursor left */
if (vc->esc_params[0] == 0) {
vc->esc_params[0] = 1;
if (vt->esc_params[0] == 0) {
vt->esc_params[0] = 1;
}
vc_set_cursor(vc, vt->x - vc->esc_params[0], vt->y);
vt100_set_cursor(vt, vt->x - vt->esc_params[0], vt->y);
break;
case 'G':
/* move cursor to column */
vc_set_cursor(vc, vc->esc_params[0] - 1, vt->y);
vt100_set_cursor(vt, vt->esc_params[0] - 1, vt->y);
break;
case 'f':
case 'H':
/* move cursor to row, column */
vc_set_cursor(vc, vc->esc_params[1] - 1, vc->esc_params[0] - 1);
vt100_set_cursor(vt, vt->esc_params[1] - 1, vt->esc_params[0] - 1);
break;
case 'J':
switch (vc->esc_params[0]) {
switch (vt->esc_params[0]) {
case 0:
/* clear to end of screen */
for (y = vt->y; y < vt->height; y++) {
@@ -971,7 +950,7 @@ static void vc_putchar(VCChardev *vc, int ch)
if (y == vt->y && x < vt->x) {
continue;
}
vc_clear_xy(vc, x, y);
vt100_clear_xy(vt, x, y);
}
}
break;
@@ -982,7 +961,7 @@ static void vc_putchar(VCChardev *vc, int ch)
if (y == vt->y && x > vt->x) {
break;
}
vc_clear_xy(vc, x, y);
vt100_clear_xy(vt, x, y);
}
}
break;
@@ -990,62 +969,62 @@ static void vc_putchar(VCChardev *vc, int ch)
/* clear entire screen */
for (y = 0; y < vt->height; y++) {
for (x = 0; x < vt->width; x++) {
vc_clear_xy(vc, x, y);
vt100_clear_xy(vt, x, y);
}
}
break;
}
break;
case 'K':
switch (vc->esc_params[0]) {
switch (vt->esc_params[0]) {
case 0:
/* clear to eol */
for(x = vt->x; x < vt->width; x++) {
vc_clear_xy(vc, x, vt->y);
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++) {
vc_clear_xy(vc, x, vt->y);
vt100_clear_xy(vt, x, vt->y);
}
break;
case 2:
/* clear entire line */
for(x = 0; x < vt->width; x++) {
vc_clear_xy(vc, x, vt->y);
vt100_clear_xy(vt, x, vt->y);
}
break;
}
break;
case 'P':
vc_csi_P(vc, vc->esc_params[0]);
vt100_csi_P(vt, vt->esc_params[0]);
break;
case 'm':
vc_handle_escape(vc);
vt100_handle_escape(vt);
break;
case 'n':
switch (vc->esc_params[0]) {
switch (vt->esc_params[0]) {
case 5:
/* report console status (always succeed)*/
qemu_text_console_write(s, "\033[0n", 4);
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);
qemu_text_console_write(s, response, strlen(response));
vt100_write(vt, response, strlen(response));
break;
}
break;
case 's':
vc_save_cursor(vc);
vt100_save_cursor(vt);
break;
case 'u':
vc_restore_cursor(vc);
vt100_restore_cursor(vt);
break;
case '@':
vc_csi_at(vc, vc->esc_params[0]);
vt100_csi_at(vt, vt->esc_params[0]);
break;
default:
trace_console_putchar_unhandled(ch);
@@ -1057,10 +1036,10 @@ static void vc_putchar(VCChardev *vc, int ch)
case TTY_STATE_OSC: /* Operating System Command: ESC ] ... BEL/ST */
if (ch == '\a') {
/* BEL terminates OSC */
vc->state = TTY_STATE_NORM;
vt->state = TTY_STATE_NORM;
} else if (ch == 27) {
/* ESC might start ST (ESC \) */
vc->state = TTY_STATE_ESC;
vt->state = TTY_STATE_ESC;
}
/* All other bytes are silently consumed */
break;
@@ -1071,7 +1050,7 @@ static void vc_putchar(VCChardev *vc, int ch)
/* Latin-1 map */
break;
}
vc->state = TTY_STATE_NORM;
vt->state = TTY_STATE_NORM;
break;
}
}
@@ -1084,22 +1063,21 @@ static int vc_chr_write(Chardev *chr, const uint8_t *buf, int len)
{
VCChardev *drv = VC_CHARDEV(chr);
QemuTextConsole *s = drv->console;
QemuVT100 *vt = &s->vt;
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);
s->vt.update_x0 = s->vt.width * FONT_WIDTH;
s->vt.update_y0 = s->vt.height * FONT_HEIGHT;
s->vt.update_x1 = 0;
s->vt.update_y1 = 0;
vt100_show_cursor(&s->vt, 0);
for(i = 0; i < len; i++) {
vc_putchar(drv, buf[i]);
vt100_putchar(&s->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);
vt100_show_cursor(&s->vt, 1);
if (s->vt.update_x0 < s->vt.update_x1) {
vt100_image_update(&s->vt, s->vt.update_x0, s->vt.update_y0,
s->vt.update_x1 - s->vt.update_x0,
s->vt.update_y1 - s->vt.update_y0);
}
return len;
}
@@ -1168,9 +1146,6 @@ qemu_text_console_init(Object *obj)
{
QemuTextConsole *c = QEMU_TEXT_CONSOLE(obj);
QTAILQ_INSERT_HEAD(&vt100s, &c->vt, list);
fifo8_create(&c->out_fifo, 16);
c->vt.total_height = DEFAULT_BACKSCROLL;
QEMU_CONSOLE(c)->hw_ops = &text_console_ops;
QEMU_CONSOLE(c)->hw = c;
}
@@ -1194,7 +1169,7 @@ static void vc_chr_accept_input(Chardev *chr)
{
VCChardev *drv = VC_CHARDEV(chr);
qemu_text_console_flush(drv->console);
qemu_text_console_out_flush(drv->console);
}
static void vc_chr_set_echo(Chardev *chr, bool echo)
@@ -1216,6 +1191,13 @@ static void text_console_image_update(QemuVT100 *vt, int x, int y, int width, in
dpy_gfx_update(QEMU_CONSOLE(console), x, y, width, height);
}
static void text_console_out_flush(QemuVT100 *vt)
{
QemuTextConsole *console = container_of(vt, QemuTextConsole, vt);
qemu_text_console_out_flush(console);
}
static bool vc_chr_open(Chardev *chr, ChardevBackend *backend, Error **errp)
{
ChardevVC *vc = backend->u.vc.data;
@@ -1245,27 +1227,31 @@ static bool vc_chr_open(Chardev *chr, ChardevBackend *backend, Error **errp)
s = QEMU_TEXT_CONSOLE(object_new(TYPE_QEMU_FIXED_TEXT_CONSOLE));
}
QTAILQ_INSERT_HEAD(&vt100s, &s->vt, list);
fifo8_create(&s->vt.out_fifo, 16);
s->vt.total_height = DEFAULT_BACKSCROLL;
dpy_gfx_replace_surface(QEMU_CONSOLE(s), qemu_create_displaysurface(width, height));
s->vt.image_update = text_console_image_update;
s->vt.out_flush = text_console_out_flush;
s->chr = chr;
drv->console = s;
if (vc->has_encoding) {
drv->encoding = vc->encoding;
drv->encoding = s->vt.encoding = vc->encoding;
}
/* set current text attributes to default */
drv->t_attrib = TEXT_ATTRIBUTES_DEFAULT;
s->vt.t_attrib = TEXT_ATTRIBUTES_DEFAULT;
vt100_set_image(&s->vt, QEMU_CONSOLE(s)->surface->image);
if (chr->label) {
char *msg;
drv->t_attrib.bgcol = QEMU_COLOR_BLUE;
s->vt.t_attrib.bgcol = QEMU_COLOR_BLUE;
msg = g_strdup_printf("%s console\r\n", chr->label);
qemu_chr_write(chr, (uint8_t *)msg, strlen(msg), true);
g_free(msg);
drv->t_attrib = TEXT_ATTRIBUTES_DEFAULT;
s->vt.t_attrib = TEXT_ATTRIBUTES_DEFAULT;
}
qemu_chr_be_event(chr, CHR_EVENT_OPENED);