{"id":2235085,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2235085/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260508-mips-octeon-missing-insns-v2-v3-12-bcbec96357d9@gmail.com/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.2/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260508-mips-octeon-missing-insns-v2-v3-12-bcbec96357d9@gmail.com>","list_archive_url":null,"date":"2026-05-08T15:12:12","name":"[v3,12/32] target/mips: add Octeon SAAD instruction","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"8d9a1ac8304918fd8af5a5a2d6d672e7f636569e","submitter":{"id":66301,"url":"http://patchwork.ozlabs.org/api/1.2/people/66301/?format=json","name":"James Hilliard","email":"james.hilliard1@gmail.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260508-mips-octeon-missing-insns-v2-v3-12-bcbec96357d9@gmail.com/mbox/","series":[{"id":503407,"url":"http://patchwork.ozlabs.org/api/1.2/series/503407/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=503407","date":"2026-05-08T15:12:00","name":"target/mips: add missing Octeon user-mode support","version":3,"mbox":"http://patchwork.ozlabs.org/series/503407/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2235085/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2235085/checks/","tags":{},"related":[],"headers":{"Return-Path":"<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=TkmMDqJY;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists1p.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)"],"Received":["from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4gBt1k52vkz1yKd\n\tfor <incoming@patchwork.ozlabs.org>; Sat, 09 May 2026 01:14:02 +1000 (AEST)","from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists1p.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from <qemu-devel-bounces@nongnu.org>)\n\tid 1wLMtb-0002ps-77; Fri, 08 May 2026 11:13:43 -0400","from eggs.gnu.org ([2001:470:142:3::10])\n by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <james.hilliard1@gmail.com>)\n id 1wLMt7-0002en-Ko\n for qemu-devel@nongnu.org; Fri, 08 May 2026 11:13:14 -0400","from mail-oi1-x236.google.com ([2607:f8b0:4864:20::236])\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128)\n (Exim 4.90_1) (envelope-from <james.hilliard1@gmail.com>)\n id 1wLMt5-0001gv-NO\n for qemu-devel@nongnu.org; Fri, 08 May 2026 11:13:13 -0400","by mail-oi1-x236.google.com with SMTP id\n 5614622812f47-479aa2dbea2so903201b6e.0\n for <qemu-devel@nongnu.org>; Fri, 08 May 2026 08:13:11 -0700 (PDT)","from\n 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa\n (71-218-113-237.hlrn.qwest.net. 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charset=\"utf-8\"","Content-Transfer-Encoding":"7bit","Message-Id":"\n <20260508-mips-octeon-missing-insns-v2-v3-12-bcbec96357d9@gmail.com>","References":"\n <20260508-mips-octeon-missing-insns-v2-v3-0-bcbec96357d9@gmail.com>","In-Reply-To":"\n <20260508-mips-octeon-missing-insns-v2-v3-0-bcbec96357d9@gmail.com>","To":"qemu-devel@nongnu.org","Cc":"Laurent Vivier <laurent@vivier.eu>, =?utf-8?q?Philippe_Mathieu-Daud?=\n\t=?utf-8?q?=C3=A9?= <philmd@linaro.org>,\n  Aurelien Jarno <aurelien@aurel32.net>,\n  Jiaxun Yang <jiaxun.yang@flygoat.com>,\n  Aleksandar Rikalo <arikalo@gmail.com>, Huacai Chen <chenhuacai@kernel.org>,\n  James Hilliard <james.hilliard1@gmail.com>, Helge Deller <deller@gmx.de>,\n  Pierrick Bouvier <pierrick.bouvier@oss.qualcomm.com>,\n  Pierrick Bouvier <pierrick.bouvier@oss.qualcomm.com>","X-Mailer":"b4 0.15.2","Received-SPF":"pass client-ip=2607:f8b0:4864:20::236;\n envelope-from=james.hilliard1@gmail.com; helo=mail-oi1-x236.google.com","X-Spam_score_int":"-17","X-Spam_score":"-1.8","X-Spam_bar":"-","X-Spam_report":"(-1.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001,\n RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n SPF_PASS=-0.001 autolearn=ham autolearn_force=no","X-Spam_action":"no action","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"qemu development <qemu-devel.nongnu.org>","List-Unsubscribe":"<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>","List-Archive":"<https://lists.nongnu.org/archive/html/qemu-devel>","List-Post":"<mailto:qemu-devel@nongnu.org>","List-Help":"<mailto:qemu-devel-request@nongnu.org?subject=help>","List-Subscribe":"<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"SAAD is the doubleword form of SAA: it atomically adds rt to the\nnaturally aligned 64-bit doubleword at base and discards the old memory\nvalue.\n\nImplement it with TCG atomic_fetch_add_i64 and the same aligned\ntransaction semantics as SAA.\n\nSigned-off-by: James Hilliard <james.hilliard1@gmail.com>\n---\nChanges v2 -> v3:\n  - Split SAAD out of the combined Octeon arithmetic and memory\n    instruction patch.  (requested by Richard Henderson)\n---\n target/mips/tcg/octeon.decode      | 1 +\n target/mips/tcg/octeon_translate.c | 1 +\n 2 files changed, 2 insertions(+)","diff":"diff --git a/target/mips/tcg/octeon.decode b/target/mips/tcg/octeon.decode\nindex d6b241de42..d77717cd50 100644\n--- a/target/mips/tcg/octeon.decode\n+++ b/target/mips/tcg/octeon.decode\n@@ -47,6 +47,7 @@ SNEI         011100 rs:5 rt:5 imm:s10 101111 &cmpi\n &saa         base rt\n @saa         ...... base:5 rt:5 ................ &saa\n SAA          011100 ..... ..... 00000 00000 011000 @saa\n+SAAD         011100 ..... ..... 00000 00000 011001 @saa\n \n &lx          base index rd\n @lx          ...... base:5 index:5 rd:5 ...... ..... &lx\ndiff --git a/target/mips/tcg/octeon_translate.c b/target/mips/tcg/octeon_translate.c\nindex 19535768d2..104822a64a 100644\n--- a/target/mips/tcg/octeon_translate.c\n+++ b/target/mips/tcg/octeon_translate.c\n@@ -188,6 +188,7 @@ static bool trans_saa(DisasContext *ctx, arg_saa *a, MemOp mop)\n }\n \n TRANS(SAA,  trans_saa, MO_UL);\n+TRANS(SAAD, trans_saa, MO_UQ);\n TRANS(LBX,  trans_lx, MO_SB);\n TRANS(LBUX, trans_lx, MO_UB);\n TRANS(LHX,  trans_lx, MO_SW);\n","prefixes":["v3","12/32"]}