core: add a proper interrupt handler for the serial console

If we enable interrupts for the serial console, add a proper interrupt
handler.  Since we don't know what vector we'll end up using, or if we
are shared with other devices, simply hook *all* the interrupts and
poll the serial port then.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/core/cleanup.inc b/core/cleanup.inc
index 1b00e0b0..063ed73e 100644
--- a/core/cleanup.inc
+++ b/core/cleanup.inc
@@ -49,6 +49,7 @@ cleanup_hardware:
 		int 10h
 .no_vmware:
 %endif
-
 		popad
-		ret
+
+		; If we enabled serial port interrupts, clean them up now
+		jmp sirq_cleanup