mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-11 15:37:23 +00:00
f62fb99941
A recent gcc added a new unaligned rodata section called '.rodata.str1.1', which needs to be added the the linker script. Instead of just adding this one section, we use a wildcard ".rodata*" to get all rodata linker section gcc has now and might add in the future. However, '*(.rodata*)' by itself will result in sub-optimal section ordering. The sections will be sorted by object file, which causes extra padding between the unaligned rodata.str.1.1 of one object file and the aligned rodata of the next object file. This is easy to fix by using the SORT_BY_ALIGNMENT command. This patch has not be tested one most of the boards modified. Some boards have a linker script that looks something like this: *(.text) . = ALIGN(16); *(.rodata) *(.rodata.str1.4) *(.eh_frame) I change this to: *(.text) . = ALIGN(16); *(.eh_frame) *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) This means the start of rodata will no longer be 16 bytes aligned. However, the boundary between text and rodata/eh_frame is still aligned to 16 bytes, which is what I think the real purpose of the ALIGN call is. Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
151 lines
3.7 KiB
Text
151 lines
3.7 KiB
Text
/*
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* (C) Copyright 2002,2003, Motorola,Inc.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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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 as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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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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*
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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,
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* MA 02111-1307 USA
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*/
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/* Assumes that the size of u-boot is less than 512K and the
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* start address is aligned on a 512K block.
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* Boot page and reset vector is put at that end of the 512K block. */
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OUTPUT_ARCH(powerpc)
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/* Do we need any of these for elf?
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__DYNAMIC = 0; */
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SECTIONS
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{
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/* Read-only sections, merged into text segment: */
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.interp : { *(.interp) }
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.hash : { *(.hash) }
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.dynsym : { *(.dynsym) }
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.dynstr : { *(.dynstr) }
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.rel.text : { *(.rel.text) }
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.rela.text : { *(.rela.text) }
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.rel.data : { *(.rel.data) }
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.rela.data : { *(.rela.data) }
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.rel.rodata : { *(.rel.rodata) }
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.rela.rodata : { *(.rela.rodata) }
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.rel.got : { *(.rel.got) }
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.rela.got : { *(.rela.got) }
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.rel.ctors : { *(.rel.ctors) }
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.rela.ctors : { *(.rela.ctors) }
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.rel.dtors : { *(.rel.dtors) }
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.rela.dtors : { *(.rela.dtors) }
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.rel.bss : { *(.rel.bss) }
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.rela.bss : { *(.rela.bss) }
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.rel.plt : { *(.rel.plt) }
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.rela.plt : { *(.rela.plt) }
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.init : { *(.init) }
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.plt : { *(.plt) }
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.text :
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{
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cpu/mpc85xx/start.o (.text)
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cpu/mpc85xx/traps.o (.text)
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cpu/mpc85xx/interrupts.o (.text)
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cpu/mpc85xx/cpu_init.o (.text)
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cpu/mpc85xx/cpu.o (.text)
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cpu/mpc85xx/speed.o (.text)
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cpu/mpc85xx/pci.o (.text)
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common/dlmalloc.o (.text)
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lib_generic/crc32.o (.text)
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lib_ppc/extable.o (.text)
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lib_generic/zlib.o (.text)
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*(.text)
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*(.fixup)
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*(.got1)
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}
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_etext = .;
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PROVIDE (etext = .);
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.rodata :
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{
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*(.eh_frame)
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*(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*)))
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}
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.fini : { *(.fini) } =0
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.ctors : { *(.ctors) }
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.dtors : { *(.dtors) }
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/* Read-write section, merged into data segment: */
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. = (. + 0x00FF) & 0xFFFFFF00;
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_erotext = .;
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PROVIDE (erotext = .);
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.reloc :
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{
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*(.got)
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_GOT2_TABLE_ = .;
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*(.got2)
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_FIXUP_TABLE_ = .;
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*(.fixup)
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}
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__got2_entries = (_FIXUP_TABLE_ - _GOT2_TABLE_) >> 2;
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__fixup_entries = (. - _FIXUP_TABLE_) >> 2;
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.data :
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{
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*(.data)
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*(.data1)
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*(.sdata)
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*(.sdata2)
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*(.dynamic)
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CONSTRUCTORS
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}
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_edata = .;
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PROVIDE (edata = .);
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. = .;
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__u_boot_cmd_start = .;
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.u_boot_cmd : { *(.u_boot_cmd) }
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__u_boot_cmd_end = .;
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. = .;
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__start___ex_table = .;
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__ex_table : { *(__ex_table) }
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__stop___ex_table = .;
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. = ALIGN(256);
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__init_begin = .;
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.text.init : { *(.text.init) }
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.data.init : { *(.data.init) }
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. = ALIGN(256);
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__init_end = .;
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__bss_start = .;
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.bss (NOLOAD) :
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{
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*(.sbss) *(.scommon)
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*(.dynbss)
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*(.bss)
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*(COMMON)
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. = ALIGN(4);
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}
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_end = . ;
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PROVIDE (end = .);
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. = (. & 0xFFF80000) + 0x0007F000;
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.bootpg :
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{
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cpu/mpc85xx/start.o (.bootpg)
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} = 0xffff
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. = (. & 0xFFF80000) + 0x0007FFFC;
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.resetvec :
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{
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*(.resetvec)
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} = 0xffff
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}
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