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;; -----------------------------------------------------------------------
;;
;; Copyright 2003-2009 H. Peter Anvin - All Rights Reserved
;; Copyright 2009 Intel Corporation; author: H. Peter Anvin
;;
;; 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.
;;
;; -----------------------------------------------------------------------
;;
;; cmdline.inc
;;
;; Common routine to assemble [null-terminated] command line into
;; real_mode_seg:cmd_line_here.
;; Not used by plain kernel due to BOOT_IMAGE= etc.
;;
section .text16
;
; Assumes DS == CS
;
make_plain_cmdline:
push es
; ui.inc has already copied any APPEND options
mov ax,real_mode_seg
mov es,ax
mov di,[CmdLinePtr]
call do_ip_append
mov si,[CmdOptPtr]
call strcpy
dec di
mov [CmdLinePtr],di
mov byte [es:di],0 ; Null-terminate
pop es
ret
;
; Actual IPAppend strings...
;
%if IS_PXELINUX
extern IPOption, BOOTIFStr, SYSUUIDStr
global IPAppends, numIPAppends
section .data16
alignz 2
IPAppends dw IPOption
dw BOOTIFStr
dw SYSUUIDStr
numIPAppends equ ($-IPAppends)/2
%else
IPAppends equ 0
numIPAppends equ 0
%endif
;
; Handle "ipappend" strings, if applicable
;
; Assumes DS == CS; pushes output to ES:DI
;
section .text16
do_ip_append:
%ifndef DEPEND
%if numIPAppends > 0
push cx
push bx
push si
mov bx,IPAppends
mov cx,[IPAppend]
and cx,(1 << numIPAppends)-1
.loop:
jcxz .done
mov si,[bx]
inc bx
inc bx
test cl,1
jz .not_this
call strcpy
mov byte [es:di-1],' ' ; Replace final null with space
.not_this:
shr cx,1
jmp .loop
.done:
pop si
pop bx
pop cx
%endif
%endif
ret
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