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 *
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 *
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 *  Emulate basic terminal commands
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 *  Emulate basic terminal commands
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 */
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 */
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static void fb_putchar(chardev_t *dev, char ch)
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static void fb_putchar(chardev_t *dev, char ch)
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{
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{
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    spinlock_lock(&fb->lock);
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    spinlock_lock(&fb_lock);
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    switch (ch) {
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    switch (ch) {
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        case '\n':
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        case '\n':
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            invert_cursor();
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            invert_cursor();
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            position += columns;
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            position += columns;
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        scroll_screen();
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        scroll_screen();
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    }
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    }
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    invert_cursor();
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    invert_cursor();
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    spinlock_unlock(&fb->lock);
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    spinlock_unlock(&fb_lock);
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}
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}
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static chardev_t framebuffer;
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static chardev_t framebuffer;
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static chardev_operations_t fb_ops = {
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static chardev_operations_t fb_ops = {
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    .write = fb_putchar,
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    .write = fb_putchar,