From: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
To: Paul Walmsley <paul.walmsley@sifive.com>
Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 4/8] riscv: ensure RISC-V C model definitions are passed to static analyzers
Date: Fri, 18 Oct 2019 06:06:20 +0200 [thread overview]
Message-ID: <20191018040619.o3qb5fyj4qdevwoe@ltop.local> (raw)
In-Reply-To: <20191018004929.3445-5-paul.walmsley@sifive.com>
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.walmsley@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
next prev parent reply other threads:[~2019-10-18 5:06 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-18 0:49 [PATCH 0/8] riscv: resolve most warnings from sparse Paul Walmsley
2019-10-18 0:49 ` [PATCH 1/8] riscv: add prototypes for assembly language functions from entry.S Paul Walmsley
2019-10-18 0:49 ` [PATCH 2/8] riscv: add prototypes for assembly language functions from head.S Paul Walmsley
2019-10-18 1:15 ` Paul Walmsley
2019-10-18 0:49 ` [PATCH 3/8] riscv: init: merge split string literals in preprocessor directive Paul Walmsley
2019-10-18 4:02 ` Luc Van Oostenryck
2019-10-18 4:38 ` Paul Walmsley
2019-10-18 5:28 ` Luc Van Oostenryck
2019-10-18 5:47 ` Luc Van Oostenryck
2019-10-18 6:08 ` Paul Walmsley
2019-10-18 0:49 ` [PATCH 4/8] riscv: ensure RISC-V C model definitions are passed to static analyzers Paul Walmsley
2019-10-18 4:06 ` Luc Van Oostenryck [this message]
2019-10-18 4:39 ` Paul Walmsley
2019-10-18 5:25 ` Luc Van Oostenryck
2019-10-22 15:09 ` Palmer Dabbelt
2019-10-28 22:11 ` Luc Van Oostenryck
2019-10-18 0:49 ` [PATCH 5/8] riscv: add missing prototypes Paul Walmsley
2019-10-18 4:15 ` Luc Van Oostenryck
2019-10-18 6:06 ` Paul Walmsley
2019-10-18 0:49 ` [PATCH 6/8] riscv: mark some code and data as file-static Paul Walmsley
2019-10-18 0:49 ` [PATCH 7/8] riscv: add missing header file includes Paul Walmsley
2019-10-18 0:49 ` [PATCH 8/8] riscv: fp: add missing __user pointer annotations Paul Walmsley
2019-10-18 3:12 ` [PATCH 0/8] riscv: resolve most warnings from sparse Anup Patel
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