From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from simark.ca by simark.ca with LMTP id cH+OHevkkV9pSAAAWB0awg (envelope-from ) for ; Thu, 22 Oct 2020 16:00:43 -0400 Received: by simark.ca (Postfix, from userid 112) id 71A681EFC7; Thu, 22 Oct 2020 16:00:43 -0400 (EDT) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on simark.ca X-Spam-Level: X-Spam-Status: No, score=-1.1 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.2 Received: from sourceware.org (server2.sourceware.org [8.43.85.97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by simark.ca (Postfix) with ESMTPS id 93D311E776 for ; Thu, 22 Oct 2020 16:00:37 -0400 (EDT) Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 4EDD139874D3; Thu, 22 Oct 2020 20:00:37 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 4EDD139874D3 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1603396837; bh=5AecPk4wJC3CFwNl2nA3ATn1yLfm9qxTJcEwScz+IdE=; h=To:Subject:Date:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:Cc:From; b=AsFThOdAjoJKJ18C63oJOO3uNjzZ7HXuXoVIDZaxBZsWc1TXtxFmsQNlcEEGNTIWR X5Uep42iwHExXMlkmuMt5/lcGSXNm7k92LxoF3PXWDLxTC89QzKyorjiCZn9t+ez53 u/cvp4AbtLx18uKa/PkzAbR1muoJSwmdB4Zh9uXA= Received: from mail-qv1-xf33.google.com (mail-qv1-xf33.google.com [IPv6:2607:f8b0:4864:20::f33]) by sourceware.org (Postfix) with ESMTPS id EB512385783D for ; Thu, 22 Oct 2020 20:00:24 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org EB512385783D Received: by mail-qv1-xf33.google.com with SMTP id de3so1636724qvb.5 for ; Thu, 22 Oct 2020 13:00:24 -0700 (PDT) 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; bh=5AecPk4wJC3CFwNl2nA3ATn1yLfm9qxTJcEwScz+IdE=; b=ePokkWV1OhW3W5nGpTtAD088IW2gdQB7dv8EJ0ZIA1jsuM6uIjgTzbKJIiI19Tw61N iOUYFTVia7qG195Pk54OpXVAKnKmuSmVcXi2DPBw20C/zVJ8sscliMYzbwrqlqlHhxyM h2pmlk1hPP4UJLOt46/bdT04TwMt1g5D+qhjbepVX5R6/c6ZdPYXVjr8AppYdzTdeMDD wJPk9PvoXVg4RgAtgr/08ZVOub2sr+U5TjCB6usAofJwSVAfEW9YdYzlX1HGpWgy9AQ8 2Dw7oiqCViGwjT067kkaz5r6wOBVq8VFZlRSKQTI9m3DQ1gQ2kpxK5A3qc0Onbcdu7SF c1Eg== X-Gm-Message-State: AOAM530ByoNme3+a8ZNAc0y8976xLsn21wzmWr+5aCWYBeqS7Ebu0ktw MrzqtnMadpV4l/UYa9WSn7+acTydpzSh7A== X-Google-Smtp-Source: ABdhPJzEv1NXfHsi/ZfB9Zw62bTVTpCAYBF220/8+6BGL0e0FgMoqhJmpR9KrD3w5+RRlXawxtYQRg== X-Received: by 2002:ad4:42ae:: with SMTP id e14mr4078352qvr.44.1603396824274; Thu, 22 Oct 2020 13:00:24 -0700 (PDT) Received: from localhost.localdomain ([2804:7f0:8284:1487:b9b1:f72a:8f1:600]) by smtp.gmail.com with ESMTPSA id a21sm1711208qkk.98.2020.10.22.13.00.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Oct 2020 13:00:23 -0700 (PDT) To: gdb-patches@sourceware.org Subject: [PATCH v2 00/24] Memory Tagging Support + AArch64 Linux implementation Date: Thu, 22 Oct 2020 16:59:50 -0300 Message-Id: <20201022200014.5189-1-luis.machado@linaro.org> X-Mailer: git-send-email 2.17.1 X-BeenThere: gdb-patches@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gdb-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Luis Machado via Gdb-patches Reply-To: Luis Machado Cc: david.spickett@linaro.org Errors-To: gdb-patches-bounces@sourceware.org Sender: "Gdb-patches" It's been a little while since v1, but here's v2 of this patch series, which implements general memory tagging support for GDB, and also includes an implementation for AArch64 Linux. Memory tagging improves memory safety by tagging various parts of memory and raising exceptions when the allocation tag (the one associated with a range of memory addresses) does not match the logical tag contained in a pointer that is used to access the memory area. We already have an implementation of such a mechanism for sparc64 (ADI), but it is target-specific and not exposed to the rest of GDB. This series aims to make the infrastructure available to other targets that may wish to support their specific memory tagging approaches. For AArch64 Linux this is called MTE (Memory Tagging Extensions). The series is split into a set that deals with generic changes to GDB's infrastructure (target methods, gdbarch hooks and remote packets), a set that implements support for AArch64 Linux and one last set that implements new commands, updates the documentation and adds tests. The goal is to make it so the architecture independent parts of GDB don't need to interpret tag formats, given the formats are likely different for each architecture. For this reason, GDB will handle tags as a sequence of bytes and will not assume a particular format. The architecture-specific code can handle the sequence of bytes appropriately. Luis Machado (24): New target methods for memory tagging support New gdbarch memory tagging hooks Add GDB-side remote target support for memory tagging Unit testing for GDB-side remote memory tagging handling GDBserver remote packet support for memory tagging Unit tests for gdbserver memory tagging remote packets Documentation for memory tagging remote packets AArch64: Add MTE CPU feature check support AArch64: Add target description/feature for MTE registers AArch64: Add MTE register set support for GDB and gdbserver AArch64: Add MTE ptrace requests AArch64: Implement memory tagging target methods for AArch64 Refactor parsing of /proc//smaps AArch64: Implement the memory tagging gdbarch hooks AArch64: Add unit testing for logical tag set/get operations AArch64: Report tag violation error information AArch64: Add gdbserver MTE support AArch64: Add MTE register set support for core files New mtag commands Documentation for the new mtag commands Extend "x" and "print" commands to support memory tagging Document new "x" and "print" memory tagging extensions Add NEWS entry. Add memory tagging testcases gdb/Makefile.in | 3 + gdb/NEWS | 32 ++ gdb/aarch64-linux-nat.c | 129 ++++++- gdb/aarch64-linux-tdep.c | 334 +++++++++++++++++- gdb/aarch64-linux-tdep.h | 3 + gdb/aarch64-tdep.c | 40 ++- gdb/aarch64-tdep.h | 12 +- gdb/arch-utils.c | 50 +++ gdb/arch-utils.h | 23 ++ gdb/arch/aarch64-mte-linux.c | 70 ++++ gdb/arch/aarch64-mte-linux.h | 66 ++++ gdb/arch/aarch64.c | 7 +- gdb/arch/aarch64.h | 7 +- gdb/configure.nat | 3 +- gdb/configure.tgt | 1 + gdb/doc/gdb.texinfo | 192 +++++++++- gdb/features/Makefile | 1 + gdb/features/aarch64-mte.c | 14 + gdb/features/aarch64-mte.xml | 11 + gdb/gdbarch.c | 137 ++++++++ gdb/gdbarch.h | 53 +++ gdb/gdbarch.sh | 36 ++ gdb/linux-tdep.c | 358 ++++++++++++------- gdb/linux-tdep.h | 4 + gdb/nat/aarch64-mte-linux-ptrace.c | 200 +++++++++++ gdb/nat/aarch64-mte-linux-ptrace.h | 50 +++ gdb/printcmd.c | 468 ++++++++++++++++++++++++- gdb/remote.c | 232 ++++++++++++ gdb/target-delegates.c | 84 +++++ gdb/target.h | 25 ++ gdb/testsuite/gdb.arch/aarch64-mte.c | 107 ++++++ gdb/testsuite/gdb.arch/aarch64-mte.exp | 371 ++++++++++++++++++++ gdb/testsuite/gdb.base/memtag.c | 22 ++ gdb/testsuite/gdb.base/memtag.exp | 64 ++++ gdb/testsuite/lib/gdb.exp | 16 + gdb/valprint.h | 1 + gdbserver/Makefile.in | 1 + gdbserver/configure.srv | 2 + gdbserver/linux-aarch64-ipa.cc | 8 +- gdbserver/linux-aarch64-low.cc | 97 ++++- gdbserver/linux-aarch64-tdesc.cc | 10 +- gdbserver/linux-aarch64-tdesc.h | 3 +- gdbserver/remote-utils.cc | 43 ++- gdbserver/remote-utils.h | 7 +- gdbserver/server.cc | 245 +++++++++++++ gdbserver/server.h | 3 + gdbserver/target.cc | 20 ++ gdbserver/target.h | 17 + gdbsupport/rsp-low.cc | 2 +- include/elf/common.h | 3 + 50 files changed, 3501 insertions(+), 186 deletions(-) create mode 100644 gdb/arch/aarch64-mte-linux.c create mode 100644 gdb/arch/aarch64-mte-linux.h create mode 100644 gdb/features/aarch64-mte.c create mode 100644 gdb/features/aarch64-mte.xml create mode 100644 gdb/nat/aarch64-mte-linux-ptrace.c create mode 100644 gdb/nat/aarch64-mte-linux-ptrace.h create mode 100644 gdb/testsuite/gdb.arch/aarch64-mte.c create mode 100644 gdb/testsuite/gdb.arch/aarch64-mte.exp create mode 100644 gdb/testsuite/gdb.base/memtag.c create mode 100644 gdb/testsuite/gdb.base/memtag.exp -- 2.17.1