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[console] Avoid overlap between special keys and Unicode characters

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The special key range (from KEY_MIN upwards) currently overlaps with
the valid range for Unicode characters, and therefore prohibits the
use of Unicode key values outside the ASCII range.

Create space for Unicode key values by moving the special keys to the
range immediately above the maximum valid Unicode character.  This
allows the existing encoding of special keys as an efficiently packed
representation of the equivalent ANSI escape sequence to be maintained
almost as-is.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2023-07-04 14:31:07 +01:00
parent cc07ed7c7e
commit 3ef4f7e2ef
3 changed files with 77 additions and 31 deletions
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4
src/drivers/usb/usbkbd.c
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@@ -95,7 +95,7 @@ static unsigned int usbkbd_map ( unsigned int keycode, unsigned int modifiers,
}
} else if ( keycode <= USBKBD_KEY_UP ) {
/* Special keys */
static const uint16_t special[] = {
static const unsigned int special[] = {
0, 0, 0, 0, 0, KEY_F5, KEY_F6, KEY_F7, KEY_F8, KEY_F9,
KEY_F10, KEY_F11, KEY_F12, 0, 0, 0, KEY_IC, KEY_HOME,
KEY_PPAGE, KEY_DC, KEY_END, KEY_NPAGE, KEY_RIGHT,
@@ -110,7 +110,7 @@ static unsigned int usbkbd_map ( unsigned int keycode, unsigned int modifiers,
if ( leds & USBKBD_LED_NUM_LOCK ) {
key = "1234567890." [ keycode - USBKBD_KEY_PAD_1 ];
} else {
static const uint16_t keypad[] = {
static const unsigned int keypad[] = {
KEY_END, KEY_DOWN, KEY_NPAGE, KEY_LEFT, 0,
KEY_RIGHT, KEY_HOME, KEY_UP, KEY_PPAGE,
KEY_IC, KEY_DC