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arc: No need in sections defined in sources with newer tools

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Starting from arc-2016.03 GNU tools linker properly works with
symbols defined in linker script and so external declarations
are no longer required, dump them.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
This commit is contained in:
Alexey Brodkin 2016-08-03 20:44:39 +03:00
parent 699c4e592b
commit 9bef24d0de
5 changed files with 18 additions and 64 deletions
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51
arch/arc/cpu/u-boot.lds
View File

@ -4,38 +4,29 @@
* SPDX-License-Identifier: GPL-2.0+
*/
#include <config.h>
OUTPUT_FORMAT("elf32-littlearc", "elf32-littlearc", "elf32-littlearc")
OUTPUT_ARCH(arc)
ENTRY(_start)
SECTIONS
{
. = ALIGN(4);
. = CONFIG_SYS_TEXT_BASE;
__image_copy_start = .;
__text_start = .;
.text : {
*(.__text_start)
*(.__image_copy_start)
arch/arc/lib/start.o (.text*)
*(.text*)
}
. = ALIGN(4);
.text_end :
{
*(.__text_end)
}
__text_end = .;
. = ALIGN(1024);
.ivt_start : {
*(.__ivt_start)
}
__ivt_start = .;
.ivt :
{
*(.ivt)
}
.ivt_end : {
*(.__ivt_end)
}
__ivt_end = .;
. = ALIGN(4);
.rodata : {
@ -53,34 +44,20 @@ SECTIONS
}
. = ALIGN(4);
.rel_dyn_start : {
*(.__rel_dyn_start)
}
__rel_dyn_start = .;
.rela.dyn : {
*(.rela.dyn)
}
.rel_dyn_end : {
*(.__rel_dyn_end)
}
__rel_dyn_end = .;
. = ALIGN(4);
.bss_start : {
*(.__bss_start);
}
__bss_start = .;
.bss : {
*(.bss*)
}
.bss_end : {
*(.__bss_end);
}
__bss_end = .;
. = ALIGN(4);
.image_copy_end : {
*(.__image_copy_end)
*(.__init_end)
}
__image_copy_end = .;
__init_end = .;
}

2
arch/arc/include/asm/sections.h
View File

@ -9,9 +9,7 @@
#include <asm-generic/sections.h>
extern ulong __text_end;
extern ulong __ivt_start;
extern ulong __ivt_end;
extern ulong __image_copy_start;
#endif /* __ASM_ARC_SECTIONS_H */

1
arch/arc/lib/Makefile
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@ -9,7 +9,6 @@ head-y := start.o
obj-y += cache.o
obj-y += cpu.o
obj-y += interrupts.o
obj-y += sections.o
obj-y += relocate.o
obj-y += strchr-700.o
obj-y += strcmp.o

5
arch/arc/lib/relocate.c
View File

@ -6,7 +6,10 @@
#include <common.h>
#include <elf.h>
#include <asm/sections.h>
#include <asm-generic/sections.h>
extern ulong __image_copy_start;
extern ulong __ivt_end;
DECLARE_GLOBAL_DATA_PTR;

23
arch/arc/lib/sections.c
View File

@ -1,23 +0,0 @@
/*
* Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0+
*/
/*
* For some reason linker sets linker-generated symbols to zero in PIE mode.
* A work-around is substitution of linker-generated symbols with
* compiler-generated symbols which are properly handled by linker in PAE mode.
*/
char __bss_start[0] __attribute__((section(".__bss_start")));
char __bss_end[0] __attribute__((section(".__bss_end")));
char __image_copy_start[0] __attribute__((section(".__image_copy_start")));
char __image_copy_end[0] __attribute__((section(".__image_copy_end")));
char __rel_dyn_start[0] __attribute__((section(".__rel_dyn_start")));
char __rel_dyn_end[0] __attribute__((section(".__rel_dyn_end")));
char __text_start[0] __attribute__((section(".__text_start")));
char __text_end[0] __attribute__((section(".__text_end")));
char __init_end[0] __attribute__((section(".__init_end")));
char __ivt_start[0] __attribute__((section(".__ivt_start")));
char __ivt_end[0] __attribute__((section(".__ivt_end")));