reactos/boot/freeldr/freeldr/arch/amd64/mb.S

   1 /*
   2  *  FreeLoader
   3  *  Copyright (C) 1998-2002  Brian Palmer  <brianp@sginet.com>
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License along
  16  *  with this program; if not, write to the Free Software Foundation, Inc.,
  17  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19
  20         .text
  21         .code16
  22
  23 #define ASM
  24 #include <arch.h>
  25 #include <multiboot.h>
  26
  27         /*
  28          * Here we assume the kernel is loaded at 1mb
  29          * This boots the kernel
  30          */
  31         .code64
  32     .globl _PageDirectoryStart
  33
  34     .globl _pml4_startup
  35     .globl _pdp_startup
  36     .globl _pd_startup
  37
  38     .globl _PageDirectoryEnd
  39
  40         //
  41         // Boot information structure
  42         //
  43
  44 EXTERN(_reactos_memory_map_descriptor_size)
  45         .long   0
  46
  47 EXTERN(_reactos_memory_map)
  48         .rept   (32 * /*sizeof(memory_map_t)*/24)
  49         .byte   0
  50         .endr
  51
  52 .bss
  53 _PageDirectoryStart:
  54 _pml4_startup:
  55         .fill 4096, 1, 0
  56
  57 _pdp_startup:
  58         .fill 4096, 1, 0
  59
  60 _pd_startup:
  61         .fill 4096, 1, 0
  62
  63 _PageDirectoryEnd: