Fix boot sectors; cleanup_hardware must preserve registers

cleanup_hardware has registers live across it when called from the
boot sector code; it must preserve all registers.

diff --git a/cleanup.inc b/cleanup.inc
index 45ef920..1025705 100644 (file)
--- a/cleanup.inc
+++ b/cleanup.inc
@@ -24,7 +24,7 @@
 ;      Can trash any registers.
 ;
 cleanup_hardware:
-
+               pushad
 ;
 ; Linux wants the floppy motor shut off before starting the kernel,
 ; at least bootsect.S seems to imply so.  If we don't load the floppy
@@ -50,4 +50,5 @@ cleanup_hardware:
 .no_vmware:
 %endif
 
+               popad
                ret