u-boot/examples/nios2.lds
Wolfgang Denk 64134f0112 Fix linker scripts: add NOLOAD atribute to .bss/.sbss sections
With recent toolchain versions, some boards would not build because
or errors like this one (here for ocotea board when building with
ELDK 4.2 beta):
ppc_4xx-ld: section .bootpg [fffff000 -> fffff23b] overlaps section .bss [fffee900 -> fffff8ab]

For many boards, the .bss section is big enough that it wraps around
at the end of the address space (0xFFFFFFFF), so the problem will not
be visible unless you use a 64 bit tool chain for development. On
some boards however, changes to the code size (due to different
optimizations) we bail out with section overlaps like above.

The fix is to add the NOLOAD attribute to the .bss and .sbss
sections, telling the linker that .bss does not consume any space in
the image.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-01-12 20:31:39 +01:00

134 lines
3.2 KiB
Text

/*
* (C) Copyright 2004, Psyent Corporation <www.psyent.com>
* Scott McNutt <smcnutt@psyent.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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
*/
OUTPUT_FORMAT("elf32-littlenios2")
OUTPUT_ARCH(nios2)
ENTRY(_start)
SECTIONS
{
.text :
{
*(.text)
*(.text.*)
*(.gnu.linkonce.t*)
*(.rodata)
*(.rodata.*)
*(.gnu.linkonce.r*)
}
. = ALIGN (4);
_etext = .;
PROVIDE (etext = .);
/* INIT DATA sections - "Small" data (see the gcc -G option)
* is always gp-relative. Here we make all init data sections
* adjacent to simplify the startup code -- and provide
* the global pointer for gp-relative access.
*/
_data = .;
.data :
{
*(.data)
*(.data.*)
*(.gnu.linkonce.d*)
}
. = ALIGN(16);
_gp = .; /* Global pointer addr */
PROVIDE (gp = .);
.sdata :
{
*(.sdata)
*(.sdata.*)
*(.gnu.linkonce.s.*)
}
. = ALIGN(4);
_edata = .;
PROVIDE (edata = .);
/* UNINIT DATA - Small uninitialized data is first so it's
* adjacent to sdata and can be referenced via gp. The normal
* bss follows. We keep it adjacent to simplify init code.
*/
__bss_start = .;
.sbss (NOLOAD) :
{
*(.sbss)
*(.sbss.*)
*(.gnu.linkonce.sb.*)
*(.scommon)
}
. = ALIGN(4);
.bss (NOLOAD) :
{
*(.bss)
*(.bss.*)
*(.dynbss)
*(COMMON)
*(.scommon)
}
. = ALIGN(4);
_end = .;
PROVIDE (end = .);
/* CMD TABLE - uboot command sections
*/
. = .;
__uboot_cmd_start = .;
.u_boot_cmd :
{
*(.u_boot_cmd)
}
. = ALIGN(4);
__u_boot_cmd_end = .;
/* DEBUG -- symbol table, string table, etc. etc.
*/
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }
.stab.excl 0 : { *(.stab.excl) }
.stab.exclstr 0 : { *(.stab.exclstr) }
.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
.comment 0 : { *(.comment) }
.debug 0 : { *(.debug) }
.line 0 : { *(.line) }
.debug_srcinfo 0 : { *(.debug_srcinfo) }
.debug_sfnames 0 : { *(.debug_sfnames) }
.debug_aranges 0 : { *(.debug_aranges) }
.debug_pubnames 0 : { *(.debug_pubnames) }
.debug_info 0 : { *(.debug_info) }
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_line 0 : { *(.debug_line) }
.debug_frame 0 : { *(.debug_frame) }
.debug_str 0 : { *(.debug_str) }
.debug_loc 0 : { *(.debug_loc) }
.debug_macinfo 0 : { *(.debug_macinfo) }
.debug_weaknames 0 : { *(.debug_weaknames) }
.debug_funcnames 0 : { *(.debug_funcnames) }
.debug_typenames 0 : { *(.debug_typenames) }
.debug_varnames 0 : { *(.debug_varnames) }
}