root/core/writestr.inc

;; -----------------------------------------------------------------------
;;
;;   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.
;;
;; -----------------------------------------------------------------------

;;
;; writestr.inc
;;
;; Code to write a simple string.
;;

;
; crlf: Print a newline
;
crlf:           push ax
                mov al,CR
                call writechr
                mov al,LF
                call writechr
                pop ax
                ret

;
; writestr: write a null-terminated string to the console, saving
;            registers on entry.
;
; Note: writestr_early and writestr are distinct in
; SYSLINUX and EXTLINUX, but not PXELINUX and ISOLINUX
;
writestr:
                pushfd
                pushad
.top:           lodsb
                and al,al
                jz .end
                call writechr
                jmp short .top
.end:           popad
                popfd
                ret