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[76.210.143.223]) by smtp.gmail.com with ESMTPSA id j8-20020a17090a060800b001c7936791d1sm3959110pjj.7.2022.04.01.22.03.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Apr 2022 22:03:58 -0700 (PDT) Subject: [PATCH v1 6/6] RISC-V: Add the Zifencei extension Date: Fri, 1 Apr 2022 22:00:41 -0700 Message-Id: <20220402050041.21302-7-palmer@rivosinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220402050041.21302-1-palmer@rivosinc.com> References: <20220402050041.21302-1-palmer@rivosinc.com> MIME-Version: 1.0 Cc: Palmer Dabbelt From: Palmer Dabbelt To: linux-sparse@vger.kernel.org, Kito Cheng , linux-riscv@lists.infradead.org, mkl@pengutronix.de, aurelien@aurel32.net, Linus Torvalds X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220401_220359_652898_45723354 X-CRM114-Status: GOOD ( 10.62 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Recent versions of binutils default to an ISA spec version that doesn't include Zifencei as part of I, so Linux has recently started passing this in -march. Signed-off-by: Palmer Dabbelt --- target-riscv.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/target-riscv.c b/target-riscv.c index afd6fafa..ff4dfba3 100644 --- a/target-riscv.c +++ b/target-riscv.c @@ -18,6 +18,7 @@ #define RISCV_FPU (RISCV_FLOAT|RISCV_DOUBLE|RISCV_FDIV) #define RISCV_GENERIC (RISCV_MUL|RISCV_DIV|RISCV_ATOMIC|RISCV_FPU) #define RISCV_ZICSR (1 << 10) +#define RISCV_ZIFENCEI (1 << 11) static unsigned int riscv_flags; @@ -39,6 +40,7 @@ static void parse_march_riscv(const char *arg) { "d", RISCV_DOUBLE|RISCV_FDIV|RISCV_ZICSR }, { "c", RISCV_COMP }, { "_zicsr", RISCV_ZICSR }, + { "_zifencei", RISCV_ZIFENCEI }, }; int i; @@ -132,6 +134,8 @@ static void predefine_riscv(const struct target *self) predefine("__riscv_muldiv", 1, "1"); if (riscv_flags & RISCV_ZICSR) predefine("__riscv_zicsr", 1, "1"); + if (riscv_flags & RISCV_ZIFENCEI) + predefine("__riscv_zifencei", 1, "1"); if (cmodel) predefine_strong("__riscv_cmodel_%s", cmodel);