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[8.43.85.97]) by mx.google.com with ESMTPS id z14-20020aa7c64e000000b005231a069116si2495373edr.652.2023.08.10.19.39.56 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Aug 2023 19:39:56 -0700 (PDT) Received-SPF: pass (google.com: domain of binutils-bounces+ouuuleilei=gmail.com@sourceware.org designates 8.43.85.97 as permitted sender) client-ip=8.43.85.97; Authentication-Results: mx.google.com; dkim=pass header.i=@sourceware.org header.s=default header.b=ukwClnvU; spf=pass (google.com: domain of binutils-bounces+ouuuleilei=gmail.com@sourceware.org designates 8.43.85.97 as permitted sender) smtp.mailfrom="binutils-bounces+ouuuleilei=gmail.com@sourceware.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 35D243858C52 for ; Fri, 11 Aug 2023 02:39:55 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 35D243858C52 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1691721595; bh=TRSAnkENbo4Ea94MQVYrqunFMfTxgmYN44+3zYOqtQ0=; h=To:Cc:Subject:Date:List-Id:List-Unsubscribe:List-Archive: List-Post:List-Help:List-Subscribe:From:Reply-To:From; b=ukwClnvUTUfyYojVSA2WZypO9HSWE531me6ivr4Fe4vU9u7GccnYE9pAXgh1hkaCK hdBKZonJtg2cr/6BGCosE8SytBX/Sj33UcFIPOYnAZQiasiX9SQi/eSbJm7vwYWyIu 9R64TI7WF92t6H2REhdyW/gghNx5v5Fk4xK3kNtY= X-Original-To: binutils@sourceware.org Delivered-To: binutils@sourceware.org Received: from mail-sender-0.a4lg.com (mail-sender-0.a4lg.com [IPv6:2401:2500:203:30b:4000:6bfe:4757:0]) by sourceware.org (Postfix) with ESMTPS id C5D633858D20 for ; Fri, 11 Aug 2023 02:39:46 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org C5D633858D20 Received: from [127.0.0.1] (localhost [127.0.0.1]) by mail-sender-0.a4lg.com (Postfix) with ESMTPSA id 1C76E300089; Fri, 11 Aug 2023 02:39:44 +0000 (UTC) To: Tsukasa OI , Palmer Dabbelt , Andrew Waterman , Jim Wilson , Nelson Chu , Kito Cheng Cc: binutils@sourceware.org Subject: [REVIEW ONLY 0/2] UNRATIFIED RISC-V: Add support for indirect CSR access extensions Date: Fri, 11 Aug 2023 02:39:11 +0000 Message-ID: Mime-Version: 1.0 X-Spam-Status: No, score=-6.0 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, KAM_MANYTO, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: binutils@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Binutils mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Tsukasa OI via Binutils From: Tsukasa OI Reply-To: Tsukasa OI Errors-To: binutils-bounces+ouuuleilei=gmail.com@sourceware.org Sender: "Binutils" X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1773898664195710947 X-GMAIL-MSGID: 1773898664195710947 Hello, This patch set demonstrates two extensions ('Smcsrind' and 'Sscsrind') in the Indirect CSR Access Architecture Extension specification: Note that RISC-V AIA and this Indirect CSR Access specifications don't have any strict superset or subset relations. Instead, Indirect CSR Access is based on a subset of RISC-V AIA but with some extensions and intentionally designed *not* to have dependencies to AIA. To implement those extensions (PATCH 2), new CSR handling mechanism will be required because those CSRs are shared with RISC-V AIA ('Smaia' / 'Ssaia'). 1. miselect 2. mireg 3. siselect 4. sireg 5. vsiselect 6. vsireg Complex CSR handling preparation as in PATCH 1 enables separating the "extension" variable (shared for error message) and actual checking. It enables checking like (A && B) and (A || B). In the PATCH 2, the author used this mechanism to check (Smaia || Smcsrind) and (Ssaia || Sscsrind). This approach should work until a kind of combinatorial explosion happens. PATCH 1 may be merged without PATCH 2 but since PATCH 2 contains two unratified extensions, this patch set as whole is considered RFC. Thanks, Tsukasa Tsukasa OI (2): RISC-V: Add complex CSR error handling UNRATIFIED RISC-V: Add indirect CSR Access Extensions and its CSRs bfd/elfxx-riscv.c | 4 + gas/config/tc-riscv.c | 38 ++++++- gas/testsuite/gas/riscv/csr-dw-regnums.d | 15 +++ gas/testsuite/gas/riscv/csr-dw-regnums.s | 17 ++++ gas/testsuite/gas/riscv/csr-version-1p10.d | 30 ++++++ gas/testsuite/gas/riscv/csr-version-1p10.l | 104 +++++++++++++++++--- gas/testsuite/gas/riscv/csr-version-1p11.d | 30 ++++++ gas/testsuite/gas/riscv/csr-version-1p11.l | 104 +++++++++++++++++--- gas/testsuite/gas/riscv/csr-version-1p12.d | 30 ++++++ gas/testsuite/gas/riscv/csr-version-1p12.l | 104 +++++++++++++++++--- gas/testsuite/gas/riscv/csr-version-1p9p1.d | 30 ++++++ gas/testsuite/gas/riscv/csr-version-1p9p1.l | 104 +++++++++++++++++--- gas/testsuite/gas/riscv/csr.s | 19 ++++ include/opcode/riscv-opc.h | 46 +++++++-- 14 files changed, 619 insertions(+), 56 deletions(-) base-commit: 5b576ed1434dfe9d80b7f0a4490c9faca94c0ed0