linux/arch/mips/vdso
Paul Burton 8919975b61
MIPS: VDSO: Fix build for binutils < 2.25
Versions of binutils prior to 2.25 are unable to link our VDSO due to an
unsupported R_MIPS_PC32 relocation generated by the ".word _start - ."
line of the inline asm in get_vdso_base(). As such, the intent is that
when building with binutils older than 2.25 we don't build code for
gettimeofday() & friends in the VDSO that rely upon get_vdso_base().

Commit 24640f233b ("mips: Add support for generic vDSO") converted us
to using generic VDSO infrastructure, and as part of that the
gettimeofday() functionality moved to a new vgettimeofday.c file. The
check for binutils < 2.25 wasn't updated to handle this new filename,
and so it continues trying to remove the old unused filename from the
build. The end result is that we try to include the gettimeofday() code
in builds that will fail to link.

Fix this by updating the binutils < 2.25 case to remove vgettimeofday.c
from obj-vdso-y, rather than gettimeofday.c.

Signed-off-by: Paul Burton <paul.burton@mips.com>
Fixes: 24640f233b ("mips: Add support for generic vDSO")
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: linux-mips@vger.kernel.org
2019-10-02 14:07:32 -07:00
..
.gitignore MIPS: Initial implementation of a VDSO 2015-11-11 08:36:36 +01:00
config-n32-o32-env.c mips: compat: vdso: Use legacy syscalls as fallback 2019-09-03 15:35:23 +01:00
elf.S mips: Add support for generic vDSO 2019-07-25 21:45:05 -07:00
genvdso.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
genvdso.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
Makefile MIPS: VDSO: Fix build for binutils < 2.25 2019-10-02 14:07:32 -07:00
sigreturn.S mips: Add support for generic vDSO 2019-07-25 21:45:05 -07:00
vdso.lds.S mips: Add clock_gettime64 entry point 2019-07-25 21:45:52 -07:00
vgettimeofday.c mips: Add clock_gettime64 entry point 2019-07-25 21:45:52 -07:00