metalsvm/tools/reset_vector.S

/*
 * QEMU Boot sector to launch a preloaded Linux kernel
 * Copyright (c) 2004 Fabrice Bellard
 */

// MetalSVM reuses the same routine to launch its preloaded kernel

#define LOAD_SEG 0x9000
// define CONFIG_MCEMU_DEBUG 1        
.code16	
.text
	.globl	_start

.org 0x0000
	.ascii "MetalSVM Boot sector"	

_realstart:
#ifdef CONFIG_MCEMU_DEBUG
	movl	$27, %eax
	movw	$0xff8, %dx
	outl	%eax, %dx
	movl	$0x0010, %eax
	movw	$0xffc, %dx
	outl	%eax, %dx
#endif
	cli
        cld
        mov $LOAD_SEG, %ax
        mov %ax, %ds
        mov %ax, %es
        mov %ax, %fs
        mov %ax, %gs
        mov %ax, %ss
        mov $0x8ffe, %sp
        ljmp $LOAD_SEG + 0x20, $0

.org 0x0ff0
_start:
	jmp	_realstart
_end:
	.fill 4096 - $, 1, 0