mkinitrd-magellan/isolinux/stack.inc

; -----------------------------------------------------------------------
;
;   Copyright 2005-2008 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.
;
; -----------------------------------------------------------------------

;
; stack.inc
;
; How to reset the stack pointer
;

%ifndef _STACK_INC
%define _STACK_INC

;
; This macro resets the stack pointer (including SS), and sets
; DS == ES == 0, interrupts on, DF = 0.
;
; It takes a 16-bit register that can be safely clobbered as parameter.
;
%macro RESET_STACK_AND_SEGS 1
		xor %1,%1
		mov ds,%1
		mov es,%1
%if IS_SYSLINUX || IS_EXTLINUX
                mov ss,%1                       ; Just in case...
                mov sp,StackBuf-2*5		; Reset stack
%elif IS_PXELINUX
		lss esp,[BaseStack]
%elif IS_ISOLINUX
		mov ss,%1
		mov sp,StackBuf-2*2
%else
		NEED TO KNOW HOW TO RESET STACK
%endif
		sti
		cld
%endmacro

%endif ; _STACK_INC
1	niro	1133	; -----------------------------------------------------------------------
2			;
3			; Copyright 2005-2008 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			; stack.inc
15			;
16			; How to reset the stack pointer
17			;
18
19			%ifndef _STACK_INC
20			%define _STACK_INC
21
22			;
23			; This macro resets the stack pointer (including SS), and sets
24			; DS == ES == 0, interrupts on, DF = 0.
25			;
26			; It takes a 16-bit register that can be safely clobbered as parameter.
27			;
28			%macro RESET_STACK_AND_SEGS 1
29			xor %1,%1
30			mov ds,%1
31			mov es,%1
32			%if IS_SYSLINUX \|\| IS_EXTLINUX
33			mov ss,%1 ; Just in case...
34			mov sp,StackBuf-2*5 ; Reset stack
35			%elif IS_PXELINUX
36			lss esp,[BaseStack]
37			%elif IS_ISOLINUX
38			mov ss,%1
39			mov sp,StackBuf-2*2
40			%else
41			NEED TO KNOW HOW TO RESET STACK
42			%endif
43			sti
44			cld
45			%endmacro
46
47			%endif ; _STACK_INC