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From: Paul Walmsley <paul.walmsley@sifive.com>
To: linux-riscv@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH 4/8] riscv: ensure RISC-V C model definitions are passed to static analyzers
Date: Thu, 17 Oct 2019 17:49:25 -0700	[thread overview]
Message-ID: <20191018004929.3445-5-paul.walmsley@sifive.com> (raw)
In-Reply-To: <20191018004929.3445-1-paul.walmsley@sifive.com>

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
 endif
 ifeq ($(CONFIG_MODULE_SECTIONS),y)
 	KBUILD_LDS_MODULE += $(srctree)/arch/riscv/kernel/module.lds
-- 
2.23.0


WARNING: multiple messages have this Message-ID (diff)
From: Paul Walmsley <paul.walmsley@sifive.com>
To: linux-riscv@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH 4/8] riscv: ensure RISC-V C model definitions are passed to static analyzers
Date: Thu, 17 Oct 2019 17:49:25 -0700	[thread overview]
Message-ID: <20191018004929.3445-5-paul.walmsley@sifive.com> (raw)
In-Reply-To: <20191018004929.3445-1-paul.walmsley@sifive.com>

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
 endif
 ifeq ($(CONFIG_MODULE_SECTIONS),y)
 	KBUILD_LDS_MODULE += $(srctree)/arch/riscv/kernel/module.lds
-- 
2.23.0


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  parent reply	other threads:[~2019-10-18  0:50 UTC|newest]

Thread overview: 46+ 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 ` 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   ` 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  0:49   ` Paul Walmsley
2019-10-18  1:15   ` 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  0:49   ` Paul Walmsley
2019-10-18  4:02   ` Luc Van Oostenryck
2019-10-18  4:02     ` Luc Van Oostenryck
2019-10-18  4:38     ` Paul Walmsley
2019-10-18  4:38       ` Paul Walmsley
2019-10-18  5:28       ` Luc Van Oostenryck
2019-10-18  5:28         ` Luc Van Oostenryck
2019-10-18  5:47       ` Luc Van Oostenryck
2019-10-18  5:47         ` Luc Van Oostenryck
2019-10-18  6:08         ` Paul Walmsley
2019-10-18  6:08           ` Paul Walmsley
2019-10-18  0:49 ` Paul Walmsley [this message]
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
2019-10-18  4:06     ` Luc Van Oostenryck
2019-10-18  4:39     ` Paul Walmsley
2019-10-18  4:39       ` Paul Walmsley
2019-10-18  5:25       ` Luc Van Oostenryck
2019-10-18  5:25         ` Luc Van Oostenryck
2019-10-22 15:09       ` Palmer Dabbelt
2019-10-22 15:09         ` Palmer Dabbelt
2019-10-28 22:11         ` Luc Van Oostenryck
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  0:49   ` Paul Walmsley
2019-10-18  4:15   ` Luc Van Oostenryck
2019-10-18  4:15     ` Luc Van Oostenryck
2019-10-18  6:06     ` Paul Walmsley
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   ` Paul Walmsley
2019-10-18  0:49 ` [PATCH 7/8] riscv: add missing header file includes Paul Walmsley
2019-10-18  0:49   ` Paul Walmsley
2019-10-18  0:49 ` [PATCH 8/8] riscv: fp: add missing __user pointer annotations Paul Walmsley
2019-10-18  0:49   ` Paul Walmsley
2019-10-18  3:12 ` [PATCH 0/8] riscv: resolve most warnings from sparse Anup Patel
2019-10-18  3:12   ` Anup Patel

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