Unverified Commit 889d746e authored May 31, 2018 by Luc Van Oostenryck Committed by Palmer Dabbelt Jun 11, 2018

riscv: add riscv-specific predefines to CHECKFLAGS



RISC-V uses the macro __riscv_xlen, predefined by GCC, to
make the distinction between 32 or 64 bit code.

However, sparse doesn't know anything about this macro
which lead to wrong warnings and failures.

Fix this by adding a define of __riscv_xlen to CHECKFLAGS
and add one for __riscv too.

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>

parent 32c81bce

arch/riscv/Makefile

+3 −0

Original line number	Diff line number	Diff line
		@@ -71,6 +71,9 @@ KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-relax)
		# architectures. It's faster to have GCC emit only aligned accesses.
		KBUILD_CFLAGS += $(call cc-option,-mstrict-align)

		# arch specific predefines for sparse
		CHECKFLAGS += -D__riscv -D__riscv_xlen=$(BITS)

		head-y := arch/riscv/kernel/head.o

		core-y += arch/riscv/kernel/ arch/riscv/mm/

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