65 lines
2.6 KiB
Plaintext
65 lines
2.6 KiB
Plaintext
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/* Copyright (C) 2004, David Decotigny
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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USA.
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*/
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SECTIONS
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{
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/* ***********************************************
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* The bootsector is here. We link it against the remaining of the kernel
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* in order to automatically figure out its size that must be loaded
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* from file to memory (see the load_size definition below)
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*/
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/* If we use one, we put the boot sector here. We don't set its
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* address to 0x7c000 (aka 0x7c00:0), since it reloads itself to
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* 0x9f000, causing the 0x7c000 address to be meaningless too. So we
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* chose to pretend that the address is 0x0, and to make a little
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* address arithmetic in bootsect.S */
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.bootsect 0x0 :
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{
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/* The code for the boot sector goes here */
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*(.bootsect);
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/* The load_size symbol contains the size of the area (in
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* sectors, aka 512 Bytes) that the boot sector should copy from
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* the disk. The bss section is not included since it uses 0
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* bytes on disk. This variable is short (16b) because it is used
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* by the bootsector in real mode, and this is enough because
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* our boot sector cannot transfer more than 1264 sectors (see
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* bootsector sources) */
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load_size = .;
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SHORT((__e_load - __b_load + 511) >> 9);
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/* ---> This is equivalent to ceil( (__e_load - __b_load) / 512 ) */
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/* At offsets 511 and 512, we set the boot sector signature (AA55h) */
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. = 0x1fe;
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SHORT(0xAA55);
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}
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}
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/* This is to avoid a cut/paste here. Please notice that a multiboot
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* section WILL be inserted, which is NOT mandatory (we could have
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* removed it without getting into trouble). Please note however that
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* the *.bin files will NOT be multiboot compatible (they are not in ELF
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* format): they are expected to be directly booted by the BIOS (or
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* by the "chainloader" command of Grub). */
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INCLUDE ../support/sos.lds
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/* We overload the entry set in sos.lds, just to avoid an ld warning */
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ENTRY(sos_main);
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