From patchwork Wed Mar 3 17:05:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julien Thierry X-Patchwork-Id: 12114557 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 063ECC433DB for ; Wed, 3 Mar 2021 23:34:49 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 02C2264F14 for ; Wed, 3 Mar 2021 23:34:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 02C2264F14 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=G5zmJFdq9ftb9NcpCBctGcRDvUFWX/aOx3YBlOYlZIU=; b=f7TRxFxbwQTJS83XrVtRPrjlkP X6BnfoesbE8fLh6Hw8LE+ZsUxMvUkmOvC3eSkpz0oRdouEvgSue0L0olf1CoolMmj/+A06FUxBW81 DGua/VVrhw3tF2sOOfnmqAd9vMlP89XMM6l9TEs6Itdl8hpDmx+rtfMRRcbESnDA3FgJ7eQ0RKbkJ RN7f1xUm9QWz9Fy2BZqsels096T2Nusa9uuNLmH9HV77vo313F8qU185dB91ZkYBzdATpz1gL57go qdnHfYKjfZKuviGjf1zdjrgIw80W6+Oq2DkS+w61YslF+45MFWMGvg2kizRiY825cTR968MFIJhP5 MM0Er9Iw==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lHawR-006xs2-BP; Wed, 03 Mar 2021 23:30:08 +0000 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lHUxw-005jM5-0h for linux-arm-kernel@lists.infradead.org; Wed, 03 Mar 2021 17:07:19 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1614791233; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=A7hqiiwpzHCv9dcTIz5ZNKi8QEHjE+ALvxN3oPNlRwk=; b=J9SquPOoX6tywb4amseohGSsS17CBN7F4wgs7pAnp2pLpI5jYYtvq6VA9RhKd/uo9XKMXa lWjkfE3mP/5LUbBoONGaj/+YvcoMoP0T1GoViAxsb8tVfCWAHEeT//IFwkkztTda2RlHhr gT2JV6BedIvXBY4dX8GPOrLLxpD0qOc= Received: from mail-wr1-f71.google.com (mail-wr1-f71.google.com [209.85.221.71]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-126-SdFQ6W1GOp2Q613q0jiCLQ-1; Wed, 03 Mar 2021 12:05:41 -0500 X-MC-Unique: SdFQ6W1GOp2Q613q0jiCLQ-1 Received: by mail-wr1-f71.google.com with SMTP id n17so846234wrq.5 for ; Wed, 03 Mar 2021 09:05:41 -0800 (PST) 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:mime-version :content-transfer-encoding; bh=A7hqiiwpzHCv9dcTIz5ZNKi8QEHjE+ALvxN3oPNlRwk=; b=DxHxDfIkpWG1O2GRAkLFF7TqeCXJ/PQJVVXRulkJ6oWSCkOKZ56pmIev/0wlcqfosd WpCJ9MDZoBcDWswf4lJ1Rc+v/U+HwnvpCI8swxdMNmrwF2vhlGOe6Jgeic8MdSMODF5/ Y+Hx7ggqVXcT/I6BSaB+66WJu/+3lbysb4OLefX5bBiYNf3vYX3aUIyC1FanYK1dMLcj w5P81SzxzZovDuQA/RSRX3lUdfWDn/mfyWpIcNCwDqYseH5UKp40OArAYEyRbBtLTqxi ItQ4J9+YRo53vJNvoDeJMk2UB5olB+g4Ko6ly1OWSabwAQ6HjleDpaCHvg6DTjXfw61y MjsQ== X-Gm-Message-State: AOAM532ew3i4aC7wzzcdhnqCkIR23tEZKrAyB2pfxFssKI1SEfTouX4y LMl7IFkYiRIWauhda45FDeM4IYF5TM8i+Rkk7eZDebsgYGhc2cdIF11ZpoBld4xC6tQFc1/3nT6 7bsAwKoPzstVIOtaumhei4h53cQCkGtzYQeA= X-Received: by 2002:adf:ed44:: with SMTP id u4mr27999038wro.35.1614791140471; Wed, 03 Mar 2021 09:05:40 -0800 (PST) X-Google-Smtp-Source: ABdhPJxzNmPS+Nyc5thLw/E/w0nWRpQjgI2MvRdrlSRg18Nj3Ck6eZLBX+Y2xOLFNKfOZjcTebcU/g== X-Received: by 2002:adf:ed44:: with SMTP id u4mr27999022wro.35.1614791140291; Wed, 03 Mar 2021 09:05:40 -0800 (PST) Received: from redfedo.redhat.com ([2a01:cb14:499:3d00:cd47:f651:9d80:157a]) by smtp.gmail.com with ESMTPSA id d29sm32957827wra.51.2021.03.03.09.05.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 03 Mar 2021 09:05:39 -0800 (PST) From: Julien Thierry To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: catalin.marinas@arm.com, will@kernel.org, mark.rutland@arm.com, broonie@kernel.org, ycote@redhat.com, Julien Thierry Subject: [RFC PATCH v2 0/8] arm64: Prepare instruction decoder for objtool Date: Wed, 3 Mar 2021 18:05:28 +0100 Message-Id: <20210303170536.1838032-1-jthierry@redhat.com> X-Mailer: git-send-email 2.25.4 MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jthierry@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org To support arm64, objtool will need to be able to decode aarch64 instructions. This patch series adds some instruction definitions needed by objtool and moves out encoding/decoding functionalities that do not rely on kernel code in order. Changes since v1[1]: - Split the isolation of instruction encoder/decoder capabilities in several steps as suggested by Mark R. - Exclude dsb encoding where CRm != 0b0x00 - Support dsb FEAT_XS encoding - Support previously missing barriers [1] https://lkml.org/lkml/2021/1/20/791 Thanks, Julien --> Julien Thierry (8): arm64: Move patching utilities out of instruction encoding/decoding arm64: Move aarch32 condition check functions arm64: insn: Reduce header dependencies of instruction decoder arm64: Move instruction encoder/decoder under lib/ arm64: insn: Add SVE instruction class arm64: insn: Add barrier encodings arm64: insn: Add some opcodes to instruction decoder arm64: insn: Add load/store decoding helpers arch/arm64/include/asm/alternative-macros.h | 3 - arch/arm64/include/asm/insn.h | 70 +++++- arch/arm64/include/asm/patching.h | 13 + arch/arm64/include/asm/probes.h | 2 +- arch/arm64/include/asm/traps.h | 3 + arch/arm64/kernel/Makefile | 4 +- arch/arm64/kernel/ftrace.c | 1 + arch/arm64/kernel/jump_label.c | 1 + arch/arm64/kernel/patching.c | 148 ++++++++++++ arch/arm64/kernel/probes/simulate-insn.c | 1 + arch/arm64/kernel/traps.c | 100 +++++++- arch/arm64/lib/Makefile | 6 +- arch/arm64/{kernel => lib}/insn.c | 249 +------------------- 13 files changed, 338 insertions(+), 263 deletions(-) create mode 100644 arch/arm64/include/asm/patching.h create mode 100644 arch/arm64/kernel/patching.c rename arch/arm64/{kernel => lib}/insn.c (86%) --- 2.25.4