Commit 2a6c7c36 authored by Tri Vo's avatar Tri Vo Committed by Catalin Marinas
Browse files

arm64: lse: remove -fcall-used-x0 flag 



x0 is not callee-saved in the PCS. So there is no need to specify
-fcall-used-x0.

Clang doesn't currently support -fcall-used flags. This patch will help
building the kernel with clang.

Tested-by: default avatarNick Desaulniers <ndesaulniers@google.com>
Acked-by: default avatarWill Deacon <will.deacon@arm.com>
Signed-off-by: default avatarTri Vo <trong@android.com>
Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent 0b8af745

arch/arm64/lib/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -12,7 +12,7 @@ lib-y := clear_user.o delay.o copy_from_user.o \ 
# when supported by the CPU. Result and argument registers are handled

# correctly, based on the function prototype.

lib-$(CONFIG_ARM64_LSE_ATOMICS) += atomic_ll_sc.o

CFLAGS_atomic_ll_sc.o	:= -fcall-used-x0 -ffixed-x1 -ffixed-x2		\

CFLAGS_atomic_ll_sc.o	:= -ffixed-x1 -ffixed-x2        		\

		   -ffixed-x3 -ffixed-x4 -ffixed-x5 -ffixed-x6		\

		   -ffixed-x7 -fcall-saved-x8 -fcall-saved-x9		\

		   -fcall-saved-x10 -fcall-saved-x11 -fcall-saved-x12	\

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