cosmopolitan/ape/lib/bootdr.S

37 lines
2.2 KiB
ArmAsm

/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
vi: set et ft=asm ts=8 sw=8 fenc=utf-8 :vi
Copyright 2020 Justine Alexandra Roberts Tunney
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; version 2 of the License. │
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., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include "ape/macros.h"
#include "ape/notice.inc"
.section .real,"ax",@progbits
.source __FILE__
.code16
/ Resets personal computer.
/
/ @param di drive number, e.g. A:\ is 0x00, C:\ is 0x80
/ @mode real
/ @noreturn
bootdr: push %bp
mov %sp,%bp
mov %di,%dx
int $0x19
ljmp $0xf000,$0xfff0
.endfn bootdr,globl