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[114.34.229.221]) by smtp.gmail.com with ESMTPSA id x14sm981326pfp.77.2021.01.11.18.21.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 11 Jan 2021 18:21:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=5HXgmt6k/G8n17p6GbhXA6B9PdJjhLw8veADH8tZoHg=; b=gL3moGeyO92ikwW+1bK67EMseK4g7Lgjy++B8dpDgw4guL+TcclAXkLMaz01lOPC3A EM0Bl/FYmAh9eHsJ2tTBRS9Nq7J/s9YWAg8/nOTbtFp16R1H8Mrjt/geeiXaASxPo3ig +WHW7SnAyXmafROB1ATeCSk6ZqIlH4BH8POQm6WZM+gSmzbUjqMec9R0fqZZwgfr+615 xuO4XtPOnkqwqTTQm2VhAVfXtqMoc131CEx95bm8wy2OOlqA9d3lRx23vdROhzYvJJA2 +Oyw5edTVPBFpmxg6cTzjNn0FKtssGoVAdYBWJDA9aepEM85JzBabWPmq3X86pgT+HvZ yCww== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=5HXgmt6k/G8n17p6GbhXA6B9PdJjhLw8veADH8tZoHg=; b=P0Sy03m74CKcOFrNqhD1wraTKx4iCvAn+7x4f5ixD4Ec/ZL8q8sw6xsb7xwFOZC7Gm mcliY2xcVV7DYRrOkZRkIldp5/X54KT2WdTsAV1IBINLIFsei/sEtM1QSAvTXZdR3KU5 1aaLCAO/IAIaXgw0k1+GEKbkwYm2qMgepUoXXiPfCO6PdlKduGy0hKHk8RuD9oUdlEJg PiIOTbcuYrtZZuoQij3gquCSyvJloL8COsGEJ9H25Tg68Xwk5YHRrqrWG298aMof2WOb imDLTmVYd8ybrryjYIKuapmkmrqBGDSzOtpQE7pzqLVzLy7MTnebs8jCeu00rx/8FxPv +Tsg== X-Gm-Message-State: AOAM5312YqZ54hWlB9fn0IJM5I9N5ocHoX1Kv2Ihw1bmOdlS8c9IHvJw X5pfJG/C77NIhUKv3A7PHnTJlk3mlctuWUdT X-Google-Smtp-Source: ABdhPJxPRFrxgXSHJPrfNjSGKFXOITRVz8cNBLqDuji8QqW5oGH6KIgnJIJAwKJVM0eHBal8Y3DHOA== X-Received: by 2002:a17:90a:f48b:: with SMTP id bx11mr1960463pjb.48.1610418083591; Mon, 11 Jan 2021 18:21:23 -0800 (PST) From: frank.chang@sifive.com To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Subject: [RFC v3 16/16] target/riscv: rvb: support and turn on B-extension from command line Date: Tue, 12 Jan 2021 10:19:57 +0800 Message-Id: <20210112022001.20521-17-frank.chang@sifive.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210112022001.20521-1-frank.chang@sifive.com> References: <20210112022001.20521-1-frank.chang@sifive.com> Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::102b; envelope-from=frank.chang@sifive.com; helo=mail-pj1-x102b.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sagar Karandikar , Frank Chang , Bastian Koppelmann , Alistair Francis , Palmer Dabbelt , Kito Cheng Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Kito Cheng B-extension is default off, use cpu rv32 or rv64 with x-b=3Dtrue to enable B-extension. Signed-off-by: Kito Cheng Signed-off-by: Frank Chang Reviewed-by: Alistair Francis Reviewed-by: Richard Henderson --- target/riscv/cpu.c | 4 ++++ target/riscv/cpu.h | 2 ++ 2 files changed, 6 insertions(+) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 8227d7aea9d..7379a0abc6c 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -472,6 +472,9 @@ static void riscv_cpu_realize(DeviceState *dev, Error *= *errp) if (cpu->cfg.ext_h) { target_misa |=3D RVH; } + if (cpu->cfg.ext_b) { + target_misa |=3D RVB; + } if (cpu->cfg.ext_v) { target_misa |=3D RVV; if (!is_power_of_2(cpu->cfg.vlen)) { @@ -542,6 +545,7 @@ static Property riscv_cpu_properties[] =3D { DEFINE_PROP_BOOL("s", RISCVCPU, cfg.ext_s, true), DEFINE_PROP_BOOL("u", RISCVCPU, cfg.ext_u, true), /* This is experimental so mark with 'x-' */ + DEFINE_PROP_BOOL("x-b", RISCVCPU, cfg.ext_b, false), DEFINE_PROP_BOOL("x-h", RISCVCPU, cfg.ext_h, false), DEFINE_PROP_BOOL("x-v", RISCVCPU, cfg.ext_v, false), DEFINE_PROP_BOOL("Counters", RISCVCPU, cfg.ext_counters, true), diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 6339e848192..d5271906db4 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -72,6 +72,7 @@ #define RVS RV('S') #define RVU RV('U') #define RVH RV('H') +#define RVB RV('B') =20 /* S extension denotes that Supervisor mode exists, however it is possible to have a core that support S mode but does not have an MMU and there @@ -282,6 +283,7 @@ struct RISCVCPU { bool ext_f; bool ext_d; bool ext_c; + bool ext_b; bool ext_s; bool ext_u; bool ext_h; --=20 2.17.1