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[97.126.123.70]) by smtp.gmail.com with ESMTPSA id hg11sm179602pjb.14.2020.02.24.10.39.52 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 24 Feb 2020 10:39:52 -0800 (PST) Subject: Re: [PATCH 3/3] target/arm: Implement v8.4-RCPC To: Peter Maydell , qemu-arm@nongnu.org, qemu-devel@nongnu.org References: <20200224172846.13053-1-peter.maydell@linaro.org> <20200224172846.13053-4-peter.maydell@linaro.org> From: Richard Henderson Message-ID: <60d47c82-1c7b-9e75-f4fd-fbf752092a82@linaro.org> Date: Mon, 24 Feb 2020 10:39:49 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 MIME-Version: 1.0 In-Reply-To: <20200224172846.13053-4-peter.maydell@linaro.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::1044 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 2/24/20 9:28 AM, Peter Maydell wrote: > The v8.4-RCPC extension implements some new instructions: > * LDAPUR, LDAPURB, LDAPURH, LDAPRSB, LDAPRSH, LDAPRSW > * STLUR, STLURB, STLURH > > These are all in a new subgroup of encodings that sits below the > top-level "Loads and Stores" group in the Arm ARM. > > The STLUR* instructions have standard store-release semantics; the > LDAPUR* have Load-AcquirePC semantics, but (as with LDAPR*) we choose > to implement them as the slightly stronger Load-Acquire. > > Signed-off-by: Peter Maydell > --- > target/arm/cpu.h | 5 +++ > linux-user/elfload.c | 1 + > target/arm/cpu64.c | 2 +- > target/arm/translate-a64.c | 90 ++++++++++++++++++++++++++++++++++++++ > 4 files changed, 97 insertions(+), 1 deletion(-) Reviewed-by: Richard Henderson r~