Reduce stack usage for ISRs; minor fixes.

Don't back up all registers on isr handlers - they don't read/modify
    them.  This saves stack space.
extended_bios_data_area_s must be packed to match ebda spec.
Enable irqs on int 08 - follows old bochs bios code.
Fix bug in int 76 -- should clear disk_interrupt_flag not
    floppy_harddisk_info.
Make sure we alert in disk_ret on failure case.
int 18/19 entry points need to setup cld/%ds too.
asm in handle_1587 clobbers flags - note that in clobber list.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/kbd.c b/src/kbd.c
index c89899f..86a470e 100644
--- a/src/kbd.c
+++ b/src/kbd.c
@@ -237,7 +237,7 @@ set_leds()
 void VISIBLE16
 handle_16(struct bregs *regs)
 {
-//    debug_enter(regs);
+    //debug_enter(regs);
 
     set_leds();
 
@@ -542,9 +542,9 @@ process_key(u8 scancode)
 
 // INT09h : Keyboard Hardware Service Entry Point
 void VISIBLE16
-handle_09(struct bregs *regs)
+handle_09()
 {
-    //debug_isr(regs);
+    //debug_isr();
 
     // disable keyboard
     outb(0xad, PORT_PS2_STATUS);