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- /*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
- │vi: set et ft=asm ts=8 tw=8 fenc=utf-8 :vi│
- ╞══════════════════════════════════════════════════════════════════════════════╡
- │ Copyright 2020 Justine Alexandra Roberts Tunney │
- │ │
- │ Permission to use, copy, modify, and/or distribute this software for │
- │ any purpose with or without fee is hereby granted, provided that the │
- │ above copyright notice and this permission notice appear in all copies. │
- │ │
- │ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
- │ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
- │ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
- │ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
- │ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
- │ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
- │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
- │ PERFORMANCE OF THIS SOFTWARE. │
- ╚─────────────────────────────────────────────────────────────────────────────*/
- .section .start,"ax",@progbits
- .globl _start
- .code16
- _start: jmp 1f # some bios scan for short jump
- 1: ljmp $0x600>>4,$_begin # end of bios data roundup page
- _begin: push %cs # memory model cs=ds=es = 0x600
- push %cs
- push %cs
- pop %ds
- pop %es
- pop %ss
- mov $0x70000>>4,%sp
- cld
- xor %ax,%ax
- xor %di,%di
- mov $0x7c00-0x600,%cx
- rep stosb # clears our bss memory
- xchg %di,%bx # start buffer at 07c00
- inc %cx # start at first sector
- xor %dh,%dh # drive dl head zero
- mov $0x0200+v_sectors,%ax # read sectors
- int $0x13 # disk service
- // 𝑠𝑙𝑖𝑑𝑒
- .section .yoink
- nopw main
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