diff options
Diffstat (limited to 'contrib/syslinux-4.02/core/writehex.inc')
| -rw-r--r-- | contrib/syslinux-4.02/core/writehex.inc | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/core/writehex.inc b/contrib/syslinux-4.02/core/writehex.inc new file mode 100644 index 0000000..e2bf86b --- /dev/null +++ b/contrib/syslinux-4.02/core/writehex.inc @@ -0,0 +1,52 @@ +;; ----------------------------------------------------------------------- +;; +;; Copyright 1994-2008 H. Peter Anvin - All Rights Reserved +;; +;; This program is free software; you can redistribute it and/or modify +;; it under the terms of the GNU General Public License as published by +;; the Free Software Foundation, Inc., 53 Temple Place Ste 330, +;; Boston MA 02111-1307, USA; either version 2 of the License, or +;; (at your option) any later version; incorporated herein by reference. +;; +;; ----------------------------------------------------------------------- + +;; +;; writehex.inc +;; +;; Write hexadecimal numbers to the console +;; + +; +; writehex[248]: Write a hex number in (AL, AX, EAX) to the console +; +writehex2: + pushfd + pushad + rol eax,24 + mov cx,2 + jmp short writehex_common +writehex4: + pushfd + pushad + rol eax,16 + mov cx,4 + jmp short writehex_common +writehex8: + pushfd + pushad + mov cx,8 +writehex_common: +.loop: rol eax,4 + push eax + and al,0Fh + cmp al,10 + jae .high +.low: add al,'0' + jmp short .ischar +.high: add al,'A'-10 +.ischar: call writechr + pop eax + loop .loop + popad + popfd + ret |