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/* Copyright (C) 2003, Thomas Petazzoni
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
USA.
*/
/* We generate binary in the ELF format */
OUTPUT_FORMAT("elf32-i386","elf32-i386","elf32-i386");
/* The entry point is _start (defined in boot.S) */
ENTRY(_start)
/* The architecture is i386 */
OUTPUT_ARCH("i386")
SECTIONS
{
/* our kernel is loaded at 0x200000 */
. = 0x200000;
__b_load = .;
/* the multiboot header MUST come early enough in the output
object file */
.multiboot :
{
/* The multiboot section (containing the multiboot header)
goes here */
*(.multiboot);
/*
* With the following line, we force this section to be
* allocated in the output file as soon as possible, no matter
* when the file containing the multiboot header (multiboot.S)
* is compiled. This is to conform to the multiboot spec, which
* says "The Multiboot header must be contained completely
* within the first 8192 bytes of the OS image, and must be
* longword (32-bit) aligned."
*/
LONG(0);
}
/* Defines a symbol '__b_kernel to mark the start of the kernel
code/data */
. = ALIGN(4096);
__b_kernel = .;
/* Beginning of the text section */
.text ALIGN(4096) :
{
/* This section includes the code */
*(.text*)
/* Defines the 'etext' and '_etext' at the end */
PROVIDE(etext = .);
PROVIDE(_etext = .);
}
/* Beginning of the data section */
.data . :
{ *(.data*)
PROVIDE(edata = .);
PROVIDE(_edata = .);
}
/* Beginning of the read-only data section */
.rodata . :
{ *(.rodata*)
*(.eh_frame*)
/* For articles 7.5 and later, it is better if the program
"files" are located on a 4kB boundary: this allows
binfmt_elf32 to share program pages between kernel and
user, alleviating the need to allocate new pages to copy the
user code */
. = ALIGN(4096);
*(.userprogs)
PROVIDE(erodata = .);
PROVIDE(_erodata = .);
}
/* We take note of the end of the data to load */
__e_load = .;
/* Beginning of the BSS section (global uninitialized data) */
.bss SIZEOF(.rodata) + ADDR(.rodata) :
{ *(.bss)
*(COMMON)
/* We put the stack of the bootstrap thread on a page
boundary, because it can be un-allocated later */
. = ALIGN(4096);
*(.init_stack)
PROVIDE(ebss = .);
PROVIDE(_ebss = .);
}
/* We take note of the end of the kernel: this is where the GPFM
will begin */
__e_kernel = .;
}