/* boot.S - bootstrap the kernel *//* Copyright (C) 1999, 2001  Free Software Foundation, Inc.   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; either version 2 of the License, or   (at your option) any later version.    This program is distributed in the hope that it will be useful,   but WITHOUT ANY WARRANTY; without even the implied warranty of   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the   GNU General Public License for more details.    You should have received a copy of the GNU General Public License   along with this program; if not, write to the Free Software   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */#define ASM	1#include <multiboot.h>		.text	.globl	start, _startstart:_start:	jmp	multiboot_entry	/* Align 32 bits boundary.  */	.align	4		/* Multiboot header.  */multiboot_header:	/* magic */	.long	MULTIBOOT_HEADER_MAGIC	/* flags */	.long	MULTIBOOT_HEADER_FLAGS	/* checksum */	.long	-(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS)#ifndef __ELF__	/* header_addr */	.long	multiboot_header	/* load_addr */	.long	_start	/* load_end_addr */	.long	_edata	/* bss_end_addr */	.long	_end	/* entry_addr */	.long	multiboot_entry#endif /* ! __ELF__ */multiboot_entry:	/* Initialize the stack pointer.  */	movl	$(stack + STACK_SIZE), %esp	/* Reset EFLAGS.  */	pushl	$0	popf	/* Push the pointer to the Multiboot information structure.  */	pushl	%ebx	/* Push the magic value.  */	pushl	%eax	/* Now enter the C main function...  */	call	EXT_C(cmain)	/* Halt.  */	pushl	$halt_message	call	EXT_C(printf)	loop:	hlt	jmp	loophalt_message:	.asciz	"Halted."	/* Our stack area.  */	.comm	stack, STACK_SIZE