From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from simark.ca by simark.ca with LMTP id YFTFDT2f7F/qCgAAWB0awg (envelope-from ) for ; Wed, 30 Dec 2020 10:39:41 -0500 Received: by simark.ca (Postfix, from userid 112) id 353661F0B8; Wed, 30 Dec 2020 10:39:41 -0500 (EST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on simark.ca X-Spam-Level: X-Spam-Status: No, score=0.2 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI,RDNS_NONE,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.2 Received: from sourceware.org (unknown [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 C7D941F075 for ; Wed, 30 Dec 2020 10:39:36 -0500 (EST) Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 6CB72388C020; Wed, 30 Dec 2020 15:39:35 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 6CB72388C020 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1609342775; bh=NpgDMd1SPXc2GraSEI0EuWjHLgdmAthXG4I/c4qibvo=; h=To:Subject:Date:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:Cc:From; b=CYr6AqRonkqNRQQwWIaUFyrzALMYsH8cX57/3d0NCpQ6Q3EAxlgF8Sc5p8pNZvvo0 5hbXi0fm/qbFglgl9H2QotpDiMmpTavg1gMMRXqpIRpaUUhurYqPTb8KLvcHpss3FM Z8SGF3INnTILg0fnyNngTRulCFckwQDBDgDnRa7U= Received: from mail-qt1-x82e.google.com (mail-qt1-x82e.google.com [IPv6:2607:f8b0:4864:20::82e]) by sourceware.org (Postfix) with ESMTPS id 5619B3858038 for ; Wed, 30 Dec 2020 15:39:23 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 5619B3858038 Received: by mail-qt1-x82e.google.com with SMTP id y15so11135312qtv.5 for ; Wed, 30 Dec 2020 07:39:23 -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=NpgDMd1SPXc2GraSEI0EuWjHLgdmAthXG4I/c4qibvo=; b=Bycu5RGzNi5Jy27xDIwtEobgGg1yT0LQtQ4pp7ULvlfMkEFVdwDov3l0d3EmSyL3ND ykLvF8IsFVi49G14CyDT8VP2ZyoGoZBIqjso+h4O3PNKE+vFdUlRpVtemH/Nln4FqQJn 016gnrVm2o4qjgrv4YeMlEozJzlF/IhYjlIGntuVFachgNwnmAXWEGOIPiHtfPbfwqEe jp0o+Ik9SAQHRJv3gBWF2ceHKNFqNIRyEYrHwOqZdVFN2ji//KgzkQNr+daXHMH2Lh5O 2BZRU8SpZ/jtplVjcp9g6MTe94cud5ba9HkdzCFXGGtCqk55jlPMpDSsCUESL/GOHVNg ra5w== X-Gm-Message-State: AOAM533gE/lLcJ52mIk/Uy1IPl3kJBOs0om2ToFFKwgPa4Xx8iGaV1nW xGYeB+MfAVRm18ZCS/5jrBoICJzQDcEgMg== X-Google-Smtp-Source: ABdhPJzf2aE+N4mfBNl+btACUj81YVdl3iN2SjRW5fSi9Ndd72UMEmYMZhYhwU7pU5NrXADQGQA/Fg== X-Received: by 2002:ac8:7c8e:: with SMTP id y14mr50894572qtv.161.1609342762053; Wed, 30 Dec 2020 07:39:22 -0800 (PST) Received: from localhost.localdomain ([2804:7f0:8284:370e:c9ba:c4ec:737b:57da]) by smtp.gmail.com with ESMTPSA id f6sm28589336qkh.2.2020.12.30.07.39.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 30 Dec 2020 07:39:21 -0800 (PST) To: gdb-patches@sourceware.org Subject: [PATCH v4 00/25] Memory Tagging Support + AArch64 Linux implementation Date: Wed, 30 Dec 2020 12:38:51 -0300 Message-Id: <20201230153916.1586725-1-luis.machado@linaro.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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" 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 (25): 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 Convert char array to std::string in linux_find_memory_regions_full 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 memory-tag 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 | 36 +- gdb/aarch64-linux-nat.c | 127 ++++++- gdb/aarch64-linux-tdep.c | 336 +++++++++++++++++- 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 | 73 ++++ gdb/arch/aarch64-mte-linux.h | 75 ++++ gdb/arch/aarch64.c | 7 +- gdb/arch/aarch64.h | 7 +- gdb/configure.nat | 3 +- gdb/configure.tgt | 1 + gdb/doc/gdb.texinfo | 233 +++++++++++- 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 | 378 +++++++++++++------- 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 | 227 ++++++++++++ gdb/target-debug.h | 24 ++ gdb/target-delegates.c | 95 +++++ gdb/target.h | 41 +++ gdb/testsuite/gdb.arch/aarch64-mte.c | 107 ++++++ gdb/testsuite/gdb.arch/aarch64-mte.exp | 369 +++++++++++++++++++ gdb/testsuite/gdb.base/memtag.c | 22 ++ gdb/testsuite/gdb.base/memtag.exp | 66 ++++ 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 | 219 ++++++++++++ gdbserver/server.h | 3 + gdbserver/target.cc | 20 ++ gdbserver/target.h | 21 ++ gdbsupport/common-utils.cc | 49 +++ gdbsupport/common-utils.h | 15 + gdbsupport/rsp-low.cc | 49 --- gdbsupport/rsp-low.h | 19 - include/elf/common.h | 3 + 54 files changed, 3654 insertions(+), 264 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 -- 2.25.1