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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2018-03-09 08:46:06 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2018-03-21 12:23:00 +0100 |
| commit | 47ea1f6b6df92fdb8dfff8afae1335092383d8fc (patch) | |
| tree | 7a73ca309a85a8a158b38c6b8224351af888e477 /arch/arm/include | |
| parent | f382224173ebf8a7fce42cf09179b5f6bc7dc6c9 (diff) | |
| download | barebox-47ea1f6b6df92fdb8dfff8afae1335092383d8fc.tar.gz barebox-47ea1f6b6df92fdb8dfff8afae1335092383d8fc.tar.xz | |
ARM: move away from ld_var
The ld_var solves the issue that when compiled with -pie the linker
provided variables are all 0x0. This mechanism however refuses to
compile with aarch64 support.
This patch replaces the ld_var mechanism with a nice little trick
learned from U-Boot: Instead of using linker provided variables
directly with "__bss_start = ." we put a zero size array into
a separate section and use the address of that array instead of
the linker variable. This properly works before relocation.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/sections.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/include/asm/sections.h b/arch/arm/include/asm/sections.h index 8c7bc8cccc..087f63fb60 100644 --- a/arch/arm/include/asm/sections.h +++ b/arch/arm/include/asm/sections.h @@ -4,6 +4,11 @@ #ifndef __ASSEMBLY__ #include <asm-generic/sections.h> +extern char __rel_dyn_start[]; +extern char __rel_dyn_end[]; +extern char __dynsym_start[]; +extern char __dynsym_end[]; + /* * Access a linker supplied variable. Use this if your code might not be running * at the address it is linked at. |