| /* |
| * GRUB -- GRand Unified Bootloader |
| * Copyright (C) 2000 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. |
| */ |
| |
| .file "pxeloader.S" |
| .text |
| |
| /* Start with the prehistoric environment... */ |
| .code16 |
| |
| /* Let's go */ |
| .globl _start; _start: |
| movw %sp, %bp |
| movw %ss:4(%bp), %ax |
| pushw %ax |
| movw %ss:6(%bp), %ax |
| pushw %ax |
| call 1f |
| 1: popw %bx |
| |
| /* Save !PXE address */ |
| popw %ax |
| movw %ax, %cs:(pxeseg-1b)(%bx) |
| popw %ax |
| movw %ax, %cs:(pxeoff-1b)(%bx) |
| movw %ax, %bx |
| |
| /* Jump to the real world */ |
| ljmp $0, $0x8200 |
| |
| . = _start + 0x7C80 - 0x7C00 |
| pxeseg: .word 0 |
| pxeoff: .word 0 |
| |
| /* This region is a junk. Do you say that this is wasteful? |
| But I like that the memory layout of the body is consistent |
| among different stage2s rather than scamping just for 1.5KB. */ |
| . = _start + 0x8200 - 0x7C00 - 1 |
| .byte 0 |