mkinitrd-magellan/isolinux/cmdline.inc

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

;
; 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

		pop es
		ret

;
; Actual IPAppend strings...
;
%if IS_PXELINUX
		section .data
		alignz 2
IPAppends	dw IPOption
		dw BOOTIFStr
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 .text

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
1	;; -----------------------------------------------------------------------
2	;;
3	;; Copyright 2003-2009 H. Peter Anvin - All Rights Reserved
4	;; Copyright 2009 Intel Corporation; author: H. Peter Anvin
5	;;
6	;; This program is free software; you can redistribute it and/or modify
7	;; it under the terms of the GNU General Public License as published by
8	;; the Free Software Foundation, Inc., 53 Temple Place Ste 330,
9	;; Boston MA 02111-1307, USA; either version 2 of the License, or
10	;; (at your option) any later version; incorporated herein by reference.
11	;;
12	;; -----------------------------------------------------------------------
13
14	;;
15	;; cmdline.inc
16	;;
17	;; Common routine to assemble [null-terminated] command line into
18	;; real_mode_seg:cmd_line_here.
19	;; Not used by plain kernel due to BOOT_IMAGE= etc.
20	;;
21
22	;
23	; Assumes DS == CS
24	;
25	make_plain_cmdline:
26	push es
27	; ui.inc has already copied any APPEND options
28	mov ax,real_mode_seg
29	mov es,ax
30
31	mov di,[CmdLinePtr]
32	call do_ip_append
33
34	mov si,[CmdOptPtr]
35
36	call strcpy
37
38	dec di
39	mov [CmdLinePtr],di
40
41	pop es
42	ret
43
44	;
45	; Actual IPAppend strings...
46	;
47	%if IS_PXELINUX
48	section .data
49	alignz 2
50	IPAppends dw IPOption
51	dw BOOTIFStr
52	numIPAppends equ ($-IPAppends)/2
53	%else
54	IPAppends equ 0
55	numIPAppends equ 0
56	%endif
57
58	;
59	; Handle "ipappend" strings, if applicable
60	;
61	; Assumes DS == CS; pushes output to ES:DI
62	;
63	section .text
64
65	do_ip_append:
66	%ifndef DEPEND
67	%if numIPAppends > 0
68	push cx
69	push bx
70	push si
71
72	mov bx,IPAppends
73	mov cx,[IPAppend]
74	and cx,(1 << numIPAppends)-1
75	.loop:
76	jcxz .done
77	mov si,[bx]
78	inc bx
79	inc bx
80	test cl,1
81	jz .not_this
82
83	call strcpy
84	mov byte [es:di-1],' ' ; Replace final null with space
85	.not_this:
86	shr cx,1
87	jmp .loop
88	.done:
89	pop si
90	pop bx
91	pop cx
92	%endif
93	%endif
94	ret