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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 <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20200224172846.13053-4-peter.maydell@linaro.org
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