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[217.169.11.214]) by smtp.gmail.com with ESMTPSA id f18-20020adffcd2000000b0033642a9a1eesm1553183wrs.21.2024.01.11.08.16.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Jan 2024 08:16:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1704989810; x=1705594610; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Rmtj7VR3QACBvsppTX7iiIn7vor5KVmAe+fOMphCBqE=; b=A95LPq50u+Jh0F9uvnEGM1KzgEouH4/NvVzABrAVYRTUSsZvY+x/uxxMCeMxwax9pB yoJMl9P+OInxPAzfIyawio94m9UKBdgxdPOyyQjszmBsLqLWEnoS4xOgZPpD/rnhWaZV jFFGYogaj2X0JFWCqacleFgtqzB8SnqF+Z1/0i9T2fTrZpPxGk0zl9qKmicPn+gRId0P C+uzON9Qy9aFmJ+RA2dRYYkuMdWCYCWYG15vknUNJecEtpLhD5oGRdFg7gGsuCPaip/H wUrDmXD7dNKY4PvrpBzfvKP7d2e59yYpvM2sIv8S7PiX8R1nKuCEZssMKfZmpdRyOVGR 46Bg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1704989810; x=1705594610; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Rmtj7VR3QACBvsppTX7iiIn7vor5KVmAe+fOMphCBqE=; b=QJ7L3vIDosYfnFvj42oAi7cQaE77L8gX8GJgehyMHeZmavFwaxaLilDUKYx5LdJgbd aFHXCBVZZpYQg8VSkrwczgzbp19prrgSaRhxejhc8haNyIK+A4Ej7pnIXW6kC1MEavEM 4PakHGRg1o8gaLmQ7X39sMXlU899TGwbh3pRc4/JEySqiQuqakx32QzwAva2xInCWu51 1hyXpqhjooE4VW8v+dGnWIQK5b4aiInhwzvUg9ele58AifpxDQC3RBPZm1E1zOfuJ9Gx 1mEfICPFwvooiHZ6mpEcU7RXKYEcSk9VKd/onqRWLw2YCh1X44MatzIHQ+ZJciKnu8rN YsnA== X-Gm-Message-State: AOJu0YwC1FxsIPpQ4y48hrGDoQktU03UUi1tPf+dWu06g2oqeqIsRqrk G0j6HEF+uzGcBVT2sKTsSPnQbiDDAZIropInPkeW1zH3XZbfMQ== X-Google-Smtp-Source: AGHT+IHZpOtvn58I+SfApDCi0aNKlKb0AyZ/mDtbUagqwdgfaTAYK8J9ro1OLd482VUgjCSiRDBHcQ== X-Received: by 2002:a05:600c:4f43:b0:40e:6194:ccfa with SMTP id m3-20020a05600c4f4300b0040e6194ccfamr509838wmq.6.1704989809607; Thu, 11 Jan 2024 08:16:49 -0800 (PST) From: Rob Bradford To: qemu-devel@nongnu.org Cc: qemu-riscv@nongnu.org, atishp@rivosinc.com, palmer@dabbelt.com, alistair.francis@wdc.com, bin.meng@windriver.com, liwei1518@gmail.com, dbarboza@ventanamicro.com, zhiwei_liu@linux.alibaba.com, Rob Bradford , Andrew Jones Subject: [PATCH v2 2/2] target/riscv: Add step to validate 'B' extension Date: Thu, 11 Jan 2024 16:16:44 +0000 Message-ID: <20240111161644.33630-3-rbradford@rivosinc.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240111161644.33630-1-rbradford@rivosinc.com> References: <20240111161644.33630-1-rbradford@rivosinc.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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=2a00:1450:4864:20::336; envelope-from=rbradford@rivosinc.com; helo=mail-wm1-x336.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @rivosinc-com.20230601.gappssmtp.com) X-ZM-MESSAGEID: 1704989862701100003 Content-Type: text/plain; charset="utf-8" If the B extension is enabled warn if the user has disabled any of the required extensions that are part of the 'B' extension. Conversely enable the extensions that make up the 'B' extension if it is enabled. Signed-off-by: Rob Bradford Reviewed-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones Reviewed-by: Alistair Francis --- target/riscv/tcg/tcg-cpu.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c index 5396c6c3eb..b5ba78240e 100644 --- a/target/riscv/tcg/tcg-cpu.c +++ b/target/riscv/tcg/tcg-cpu.c @@ -442,6 +442,35 @@ static void riscv_cpu_validate_g(RISCVCPU *cpu) } } =20 +static void riscv_cpu_validate_b(RISCVCPU *cpu) +{ + const char *warn_msg =3D "RVB mandates disabled extension %s"; + + if (!cpu->cfg.ext_zba) { + if (!cpu_cfg_ext_is_user_set(CPU_CFG_OFFSET(ext_zba))) { + cpu->cfg.ext_zba =3D true; + } else { + warn_report(warn_msg, "zba"); + } + } + + if (!cpu->cfg.ext_zbb) { + if (!cpu_cfg_ext_is_user_set(CPU_CFG_OFFSET(ext_zbb))) { + cpu->cfg.ext_zbb =3D true; + } else { + warn_report(warn_msg, "zbb"); + } + } + + if (!cpu->cfg.ext_zbs) { + if (!cpu_cfg_ext_is_user_set(CPU_CFG_OFFSET(ext_zbs))) { + cpu->cfg.ext_zbs =3D true; + } else { + warn_report(warn_msg, "zbs"); + } + } +} + /* * Check consistency between chosen extensions while setting * cpu->cfg accordingly. @@ -455,6 +484,10 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, = Error **errp) riscv_cpu_validate_g(cpu); } =20 + if (riscv_has_ext(env, RVB)) { + riscv_cpu_validate_b(cpu); + } + if (riscv_has_ext(env, RVI) && riscv_has_ext(env, RVE)) { error_setg(errp, "I and E extensions are incompatible"); --=20 2.43.0