From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qt1-x831.google.com (mail-qt1-x831.google.com [IPv6:2607:f8b0:4864:20::831]) by sourceware.org (Postfix) with ESMTPS id A3622385801D for ; Mon, 22 Mar 2021 13:21:31 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org A3622385801D Received: by mail-qt1-x831.google.com with SMTP id x9so12229522qto.8 for ; Mon, 22 Mar 2021 06:21:31 -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:subject:date:message-id:mime-version :content-transfer-encoding; bh=yJgiImv5uMcAGQG+Kpbrv00DqqOXUmqq4A3yOGi1hZ0=; b=TSCw9/zjMGWh6QwmqdTtWoB0EAHSoxJdQmdIVCwDRUd58OK7sX0zBYd7muqFNwwPMy 8AfTDxVr3UTsvWFow9RiVCO4QChuBwo7cCE32PP3mXZmv3eoYd1wPyu/okv8nUUl8cJ9 VmKhlZr5xXTLnt1/A6oRjxG7RQ6NTXgdN/FXGsgmk/KKM0ys/gxpY25kVwTcNYn2Oj0p qBFNp7CNxJfThImucegiNGlHTnTEESOMn03oengZ6SZuhiGr3CnOLpkQJ/nn538W7vpz cRWGMVIXo+zc3k10E9QtvVTNnqu0rHwX8FmTJsq65oaXwTfFD8rlVRlrY7Vsq7ojK5qs LY5Q== X-Gm-Message-State: AOAM532OaHThQ954hLpB+W/uZeYotWISlmZ3/T7vkNR5z0mHS74iHU1h OvL1t717LCG/jhuSHUpTg7Um3MkjXRX0uw== X-Google-Smtp-Source: ABdhPJzS3XQuDZ7D1O5somUz8LVMRYKoKYk4XmYmP0tZOkK7OfDR+/oMeSNSD6NY7XD2K2ox35nYbA== X-Received: by 2002:aed:29e5:: with SMTP id o92mr9424701qtd.29.1616419291179; Mon, 22 Mar 2021 06:21:31 -0700 (PDT) Received: from localhost.localdomain ([2804:7f0:4841:2841:2c21:ec8a:30f3:55a6]) by smtp.gmail.com with ESMTPSA id r35sm7364575qtd.95.2021.03.22.06.21.29 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Mar 2021 06:21:30 -0700 (PDT) From: Luis Machado To: gdb-patches@sourceware.org Subject: [PATCH v6 00/25] Memory Tagging Support + AArch64 Linux implementation Date: Mon, 22 Mar 2021 10:20:54 -0300 Message-Id: <20210322132120.1202230-1-luis.machado@linaro.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-5.1 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org 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: , X-List-Received-Date: Mon, 22 Mar 2021 13:21:33 -0000 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 | 42 ++- gdb/aarch64-linux-nat.c | 127 ++++++- gdb/aarch64-linux-tdep.c | 335 ++++++++++++++++- gdb/aarch64-linux-tdep.h | 3 + gdb/aarch64-tdep.c | 40 +- gdb/aarch64-tdep.h | 12 +- gdb/arch-utils.c | 49 +++ gdb/arch-utils.h | 22 ++ gdb/arch/aarch64-mte-linux.c | 76 ++++ gdb/arch/aarch64-mte-linux.h | 74 ++++ gdb/arch/aarch64.c | 7 +- gdb/arch/aarch64.h | 7 +- gdb/configure.nat | 3 +- gdb/configure.tgt | 1 + gdb/doc/gdb.texinfo | 248 ++++++++++++- gdb/features/Makefile | 1 + gdb/features/aarch64-mte.c | 14 + gdb/features/aarch64-mte.xml | 11 + gdb/gdbarch.c | 139 ++++++- gdb/gdbarch.h | 54 +++ gdb/gdbarch.sh | 37 ++ gdb/linux-tdep.c | 376 ++++++++++++------- gdb/linux-tdep.h | 4 + gdb/nat/aarch64-mte-linux-ptrace.c | 210 +++++++++++ gdb/nat/aarch64-mte-linux-ptrace.h | 50 +++ gdb/printcmd.c | 481 ++++++++++++++++++++++++- gdb/remote.c | 226 ++++++++++++ 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 | 370 +++++++++++++++++++ gdb/testsuite/gdb.base/memtag.c | 22 ++ gdb/testsuite/gdb.base/memtag.exp | 66 ++++ gdb/testsuite/gdb.base/options.exp | 1 + gdb/testsuite/gdb.base/with.exp | 2 +- gdb/testsuite/lib/gdb.exp | 16 + gdb/valprint.c | 23 ++ gdb/valprint.h | 4 + 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 | 42 +-- gdbserver/remote-utils.h | 12 +- gdbserver/server.cc | 218 +++++++++++ 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 + 57 files changed, 3729 insertions(+), 266 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