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Bug #57

closed

/usr/src/sys/boot/i386/cdboot/cdboot.S

Added by goto almost 19 years ago. Updated about 18 years ago.

Status:
Closed
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
Start date:
Due date:
% Done:

0%

Estimated time:

Description

Hello,

When I viewed /usr/src/sys/boot/i386/cdboot/cdboot.S, I found a minor bug
in the subroutine twiddle. XLAT instruction requires that BX register
have a table address, but the code fails to load the address:

Index: cdboot.S ===================================================================
RCS file: /dcvs/src/sys/boot/i386/cdboot/cdboot.S,v
retrieving revision 1.6
diff u -r1.6 cdboot.S
--
cdboot.S 19 Jul 2004 23:30:36 0000 1.6
++ cdboot.S 13 Jan 2006 13:32:19 -0000
@ -448,7 +448,7 @
twiddle: push %ax # Save
push %bx # Save
mov twiddle_index,%al # Load index
mov twiddle_chars,%bx # Address table
mov $twiddle_chars,%bx # Address table
inc %al # Next
and $3,%al # char
mov %al,twiddle_index # Save index for next call

Regards,

Yuichiro Goto

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