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[173.197.107.21]) by smtp.gmail.com with ESMTPSA id k25sm1138241pfi.10.2021.01.12.22.26.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Jan 2021 22:26:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=T7qIiA2TxHKspGb/1E//xY6dg2vkOf+MJQ6vthvW+io=; b=jJ6Ws/2w+p97yRAO18F8fzwrOqQQ6U4ayRQ1xdosoE51b9ptNJpM7p5cNKpPHd/Uaw iTKtxO7cjcceaLErOI3OJdGAv8vLmPaatOKufTaziBwKDNfucPj1TPsDtINPwc59Fk0p n6bl/g6vny2kgpSIy0elhzMF/6S8slJO2RgkKWv2Wf1CXD/1cO5KUwSgkYcQrcCL1RBZ UiTkzaOoEbVOSxaK7A+smRTJzrRbpoGTiQMRTcdH+q2Y9tscpgJ6awPjjZuRj5Ib8iFA v2Bf4wQOWP5A4Dd1rOo5dqtIsfrYPIjm051xp+bFYJrPdINZYfCe+ENPL4mwy6yM6M0m 2eDA== 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:mime-version:content-transfer-encoding; bh=T7qIiA2TxHKspGb/1E//xY6dg2vkOf+MJQ6vthvW+io=; b=JyuCh2bKB60cZ3mr+Y8W5oQZ86b6TMI4H/+bEp+trXilSWghCloNLx6CvAuWgwJIA4 3u6DHwAGJwNcRLNSGQWylw1SJy9bpjS/2TssQxOHR/1sM5MugNAgNv1QqqDDD+2bFqjj sgrBNK1IhMgcuRT02pVorBByOnMI4h6VA76bDw1ajJaJuOmrc7rRqDSrLHdq50LI5Rzh a4uys9jMN2CdYtQJlvO3KhjphlUM9C9stffDk9tY0gmM/OkYMD2WTIHnnYvHGOCD6Rx9 5OXo2SQVu45HTR2Bzfk/v+kLEb9zROp/xibLv3iLResAEp2+dJkSWbkj/Xo1XZafmLQK NuCw== X-Gm-Message-State: AOAM533yylCv1r9+Am86rY4TzX4PjDigHqc+HlQvMReBZxpdcQymkJqF xIfNlReGc3SgjbkX3/N4AQh4B8AIJC35zw== X-Google-Smtp-Source: ABdhPJySOjoSdSkOddebQ9jRoh2vOew+nxXFmTuaY9O89tkQKiI5UR12RJ1uw7nTR59HoYsuuCJD9Q== X-Received: by 2002:a17:90b:128a:: with SMTP id fw10mr594858pjb.113.1610519216224; Tue, 12 Jan 2021 22:26:56 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v2 1/4] target/arm: Introduce PREDDESC field definitions Date: Tue, 12 Jan 2021 20:26:47 -1000 Message-Id: <20210113062650.593824-2-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210113062650.593824-1-richard.henderson@linaro.org> References: <20210113062650.593824-1-richard.henderson@linaro.org> 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=2607:f8b0:4864:20::1032; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x1032.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: peter.maydell@linaro.org, qemu-arm@nongnu.org, qemu-stable@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" SVE predicate operations cannot use the "usual" simd_desc encoding, because the lengths are not a multiple of 8. But we were abusing the SIMD_* fields to store values anyway. This abuse broke when SIMD_OPRSZ_BITS was modified in e2e7168a214. Introduce a new set of field definitions for exclusive use of predicates, so that it is obvious what kind of predicate we are manipulating. To be used in future patches. Cc: qemu-stable@nongnu.org Signed-off-by: Richard Henderson --- target/arm/internals.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/target/arm/internals.h b/target/arm/internals.h index 5460678756..73698587d6 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -1312,6 +1312,15 @@ void arm_log_exception(int idx); #define LOG2_TAG_GRANULE 4 #define TAG_GRANULE (1 << LOG2_TAG_GRANULE) =20 +/* + * SVE predicates are 1/8 the size of SVE vectors, and cannot use + * the same simd_desc() encoding due to restrictions on size. + * Use these instead. + */ +FIELD(PREDDESC, OPRSZ, 0, 6) +FIELD(PREDDESC, ESZ, 6, 2) +FIELD(PREDDESC, DATA, 8, 24) + /* * The SVE simd_data field, for memory ops, contains either * rd (5 bits) or a shift count (2 bits). --=20 2.25.1