core/writedec.inc

   1 ;; -----------------------------------------------------------------------
   2 ;;
   3 ;;   Copyright 1994-2008 H. Peter Anvin - All Rights Reserved
   4 ;;
   5 ;;   This program is free software; you can redistribute it and/or modify
   6 ;;   it under the terms of the GNU General Public License as published by
   7 ;;   the Free Software Foundation, Inc., 53 Temple Place Ste 330,
   8 ;;   Boston MA 02111-1307, USA; either version 2 of the License, or
   9 ;;   (at your option) any later version; incorporated herein by reference.
  10 ;;
  11 ;; -----------------------------------------------------------------------
  12
  13 ;;
  14 ;; writedec.inc
  15 ;;
  16 ;; Write decimal numbers to the console
  17 ;;
  18
  19                 section .text16
  20 ;
  21 ; writedec[bwl]: Write an unsigned decimal number in (AL, AX, EAX)
  22 ;                to the console
  23 ;
  24 writedecb:
  25                 pushad
  26                 movzx eax,al
  27                 jmp short writedec_common
  28 writedecw:
  29                 pushad
  30                 movzx eax,ax
  31                 jmp short writedec_common
  32 writedecl:
  33                 pushad
  34 writedec_common:
  35                 pushfd
  36                 mov ebx,10              ; Conversion base
  37                 xor cx,cx               ; Number of digits
  38
  39 .cloop:
  40                 div ebx
  41                 inc cx
  42                 push dx
  43                 and eax,eax
  44                 jnz .cloop
  45
  46 .dloop:
  47                 pop ax
  48                 add al,'0'
  49                 call writechr
  50                 loop .dloop
  51
  52                 popfd
  53                 popad
  54                 ret
  55
  56 writechr:
  57                 ret