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kernel: tty: support for printing newlines

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max 🍓
2023-06-11 14:54:39 +01:00
parent aa62fa71b0
commit 0245d2254b
1 changed files with 54 additions and 18 deletions
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72
kernel/tty/tty.c
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@@ -1,12 +1,58 @@
#include <socks/tty.h>
#include <socks/printk.h>
static void putchar(struct device *tty, int c)
static void newline(struct device *tty)
{
struct tty_device *ttydev = TTY_DEVICE(tty);
struct tty_driver *tty_driver = TTY_DRIVER(tty->dev_owner);
struct tty_driver_ops *ops = tty_driver->tty_ops;
ttydev->tty_xcur = 0;
ttydev->tty_ycur++;
if (ttydev->tty_ycur >= ttydev->tty_ycells) {
ttydev->tty_xcur = 0;
ttydev->tty_ycur = ttydev->tty_ycells - 1;
if (ops->tty_scroll) {
ops->tty_scroll(tty, TTY_SCROLL_DOWN, 1);
}
}
ops->tty_move_cursor(tty, ttydev->tty_xcur, ttydev->tty_ycur);
}
static void __putchar(struct device *tty, int c)
{
struct tty_device *ttydev = TTY_DEVICE(tty);
struct tty_driver *tty_driver = TTY_DRIVER(tty->dev_owner);
struct tty_driver_ops *ops = tty_driver->tty_ops;
ops->tty_putc(tty, c, ttydev->tty_xcur, ttydev->tty_ycur, ttydev->tty_curattrib);
ttydev->tty_xcur++;
if (ttydev->tty_xcur >= ttydev->tty_xcells) {
ttydev->tty_xcur = 0;
ttydev->tty_ycur++;
}
if (ttydev->tty_ycur >= ttydev->tty_ycells) {
ttydev->tty_xcur = 0;
ttydev->tty_ycur = ttydev->tty_ycells - 1;
if (ops->tty_scroll) {
ops->tty_scroll(tty, TTY_SCROLL_DOWN, 1);
}
}
ops->tty_move_cursor(tty, ttydev->tty_xcur, ttydev->tty_ycur);
}
static void putchar(struct device *tty, int c)
{
struct tty_driver *tty_driver = TTY_DRIVER(tty->dev_owner);
struct tty_driver_ops *ops = tty_driver->tty_ops;
if (!ops->tty_putc) {
return;
}
@@ -16,24 +62,14 @@ static void putchar(struct device *tty, int c)
return;
}
ops->tty_putc(tty, c, ttydev->tty_xcur, ttydev->tty_ycur, ttydev->tty_curattrib);
ttydev->tty_xcur++;
if (ttydev->tty_xcur >= ttydev->tty_xcells) {
ttydev->tty_xcur = 0;
ttydev->tty_ycur++;
switch (c) {
case '\n':
newline(tty);
break;
default:
__putchar(tty, c);
break;
}
if (ttydev->tty_ycur >= ttydev->tty_ycells) {
if (ops->tty_scroll) {
ops->tty_scroll(tty, TTY_SCROLL_DOWN, 1);
} else {
ttydev->tty_xcur = 0;
ttydev->tty_ycur = 0;
}
}
ops->tty_move_cursor(tty, ttydev->tty_xcur, ttydev->tty_ycur);
}
kern_status_t tty_read(struct device *tty, void *buf, size_t max, size_t *nr_read, socks_flags_t flags)