On Thu, Oct 17, 2019 at 05:49:25PM -0700, Paul Walmsley wrote: > Static analysis tools such as sparse don't set the RISC-V C model > preprocessor directives such as "__riscv_cmodel_medany", set by the C > compilers. This causes the static analyzers to evaluate different > preprocessor paths than C compilers would. Fix this by defining the > appropriate C model macros in the static analyzer command lines. > > Signed-off-by: Paul Walmsley <paul.walms...@sifive.com> > --- > arch/riscv/Makefile | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile > index f5e914210245..0247a90bd4d8 100644 > --- a/arch/riscv/Makefile > +++ b/arch/riscv/Makefile > @@ -47,9 +47,11 @@ KBUILD_CFLAGS += -DCONFIG_PAGE_OFFSET=$(CONFIG_PAGE_OFFSET) > > ifeq ($(CONFIG_CMODEL_MEDLOW),y) > KBUILD_CFLAGS += -mcmodel=medlow > + CHECKFLAGS += -D__riscv_cmodel_medlow > endif > ifeq ($(CONFIG_CMODEL_MEDANY),y) > KBUILD_CFLAGS += -mcmodel=medany > + CHECKFLAGS += -D__riscv_cmodel_medany
I can teach sparse about this in the following days. -- Luc Van Oostenryck
