From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from simark.ca by simark.ca with LMTP id mDfHE7x2qV/vbwAAWB0awg (envelope-from ) for ; Mon, 09 Nov 2020 12:05:00 -0500 Received: by simark.ca (Postfix, from userid 112) id 488B31F08D; Mon, 9 Nov 2020 12:05:00 -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 DA7C41E552 for ; Mon, 9 Nov 2020 12:04:55 -0500 (EST) Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 2E8023896C10; Mon, 9 Nov 2020 17:04:55 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 2E8023896C10 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1604941495; bh=OHIloeCZlaJ+bu7DRBWWwWeLUmss3i5CSTDMqb9veVI=; h=To:Subject:Date:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:Cc:From; b=QN0nHDuKk5Qq4wQg1FQrAvr3RZgC1+jSgpewNxOcNThJluc2tdk08oR1SmwGT4Pkd 4OYHzets/9W5GeSFzxvH78Wi9Ep8UOJh2TAUZROwOb3sniC6zkcIBmsmH7Dg4ehrXr YoQ6vvVA2vB4EQhafKXuXuE5yQE6KsKRtc00fLQo= Received: from mail-qk1-x736.google.com (mail-qk1-x736.google.com [IPv6:2607:f8b0:4864:20::736]) by sourceware.org (Postfix) with ESMTPS id B3ECA3857804 for ; Mon, 9 Nov 2020 17:04:43 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org B3ECA3857804 Received: by mail-qk1-x736.google.com with SMTP id 11so8575842qkd.5 for ; Mon, 09 Nov 2020 09:04:43 -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; bh=OHIloeCZlaJ+bu7DRBWWwWeLUmss3i5CSTDMqb9veVI=; b=pmqZsJW1+ltG3TcQIxYDDIXbCZh4fgXuqUvk1OrB9Y5BfdJrO79Mt/UDKKYk6STI7X qH0zOdMaLowCFlAeMO2RaLLNpe6qmhKTWaE1mxZ6sErf+zbat/9upwdVmWr2P8HNupMt aeoo/sRarmpHKhYDA6nYbyFfKkiPV6jsNlNs7J32dVXKE6BgDKPxY5OFCljCT6P+uICe 3V2kloqipJvwlXVnZbVd1YjMOJcGd4KddnvGzml4wH9QXpLQdmQksZ1zPndna/NwwXHz 0Y0y1VgNDx70IIwS8NBGw4yepBVvOeJjn6E9JwUPYQZ1tH1lvKRQeQV0+zxp81dHfIyG ahbg== X-Gm-Message-State: AOAM533n81vsI7XNaPTSa9VokAflSLjDoB1Xdp4xA2BqJT5urtCaEAaK uIVpHY6MDV6jsX96/ruBBcdwq9hjawx8cA== X-Google-Smtp-Source: ABdhPJwra9HfO5Hnpd0f/2NCeQRiB76PBZB+v6/0dqKY0dUvb3t4VkpCH7I/jUvrxIS8RSFbhwfa0w== X-Received: by 2002:a05:620a:24ce:: with SMTP id m14mr14622547qkn.399.1604941482841; Mon, 09 Nov 2020 09:04:42 -0800 (PST) Received: from localhost.localdomain ([2804:7f0:8284:1487:5c3b:b268:ad95:5f37]) by smtp.gmail.com with ESMTPSA id s2sm5948358qtw.44.2020.11.09.09.04.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Nov 2020 09:04:42 -0800 (PST) To: gdb-patches@sourceware.org Subject: [PATCH v3 00/24] Memory Tagging Support + AArch64 Linux implementation Date: Mon, 9 Nov 2020 14:04:11 -0300 Message-Id: <20201109170435.15766-1-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" Here's v3 of this patch series. 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 | 215 +++++++++++- 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 | 37 ++ 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, 3536 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