From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf1-x429.google.com (mail-pf1-x429.google.com [IPv6:2607:f8b0:4864:20::429]) by sourceware.org (Postfix) with ESMTPS id 08ADF385E007 for ; Tue, 20 Apr 2021 02:18:22 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 08ADF385E007 Received: by mail-pf1-x429.google.com with SMTP id p67so19545777pfp.10 for ; Mon, 19 Apr 2021 19:18:21 -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:mime-version :content-transfer-encoding; bh=sW65DCkjdPELl1JDFvgCFtnKh1dC4UZEuI4PmWTm/zk=; b=aE8UhMozTi5PercbSGWnc4GKU4NZ33mKU0GC40wgM/H6ixPTJN1AO+aCaiHB6UyhCg fJLg7SaYdjIYrXbmsOv+zlno+C3a1NrL4EL6DTcZVRw+neqHsGsSrKihLMN2A4VrSrkL /AXVo7t0bJJRhrqOwIRBOk1QSQGtsgivbEMeS01RwZbR/ABB4zjUdP3U9N1OSkl25qIA AMyGjSVr5OqVoZRChF+wz+1ZJmO7KXcRH0Scx57AdxqLu/FKxb3qHZ/3jHHJ611ho2D3 IF6UkNwKEyF7Hj6JLXIHhykn19Emjl9wzK0k6cwPMFaf9YpsBKbuF41gjPYyhbVzNtT4 GjeQ== X-Gm-Message-State: AOAM531hzUhssNa3VnBbmcsTwsoyuDjJ9wuenf7vPqe+BeziXJKI6o/p k2HIty/C+AQ7Lz5hnMXstV0= X-Google-Smtp-Source: ABdhPJzSQDt97cMR40lfMEW10t3yeCpIl61wR51PprDTyv42xKB7L/FpN9n/XdZddsAsNBS9TGrRhg== X-Received: by 2002:a62:808b:0:b029:252:eddc:afb0 with SMTP id j133-20020a62808b0000b0290252eddcafb0mr23333751pfd.41.1618885101160; Mon, 19 Apr 2021 19:18:21 -0700 (PDT) Received: from gnu-cfl-2.localdomain ([172.58.35.177]) by smtp.gmail.com with ESMTPSA id cv12sm91731pjb.35.2021.04.19.19.18.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Apr 2021 19:18:20 -0700 (PDT) Received: from gnu-cfl-2.lan (localhost [IPv6:::1]) by gnu-cfl-2.localdomain (Postfix) with ESMTP id 1D2871A0421; Mon, 19 Apr 2021 19:18:19 -0700 (PDT) From: "H.J. Lu" To: libc-alpha@sourceware.org Cc: Florian Weimer , Joseph Myers , Vedvyas Shanbhogue , "Kirill A . Shutemov" , Szabolcs Nagy Subject: RFC [PATCH v4 0/2] : An API for tagged address Date: Mon, 19 Apr 2021 19:18:17 -0700 Message-Id: <20210420021819.765779-1-hjl.tools@gmail.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-3029.9 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, 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: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 20 Apr 2021 02:18:32 -0000 Changes in v4: 1. Document that the zero return value from get_tagged_address_bits indicates that tag bits are not the highest bits in address. 2. Document that the zero value of TAGGED_ADDRESS_MASK indicates the invalid address mask. 3. Add to provide TAGGED_ADDRESS_MASK. 4. Add C++ support to TAGGED_ADDRESS_MASK. Changes in v3: 1. set_tagged_address_mask can be only called once before main. 2. Add more tests. --- By default, the number of the address bits used in address translation is the number of address bits. But it can be changed by ARM Top-byte Ignore (TBI) or Intel Linear Address Masking (LAM). provides an API for tagged address manipulation. H.J. Lu (2): : An API for tagged address : Update libc.abilist files NEWS | 2 + bits/tagged-address-mask.h | 47 +++++++++++++++ bits/tagged-address.h | 28 +++++++++ csu/libc-start.c | 3 + elf/dl-support.c | 5 ++ include/sys/tagged-address.h | 9 +++ manual/Makefile | 3 +- manual/ctype.texi | 2 +- manual/memory.texi | 2 +- manual/tagged-address.texi | 59 +++++++++++++++++++ misc/Makefile | 34 +++++++++-- misc/Versions | 7 +++ misc/set-tagged-address-mask.c | 41 +++++++++++++ misc/sys/tagged-address.h | 45 ++++++++++++++ misc/tagged-address.c | 55 +++++++++++++++++ misc/tst-tagged-address-1-static.c | 1 + misc/tst-tagged-address-1.c | 53 +++++++++++++++++ misc/tst-tagged-address-2-static.c | 1 + misc/tst-tagged-address-2.c | 44 ++++++++++++++ misc/tst-tagged-address-3-static.c | 1 + misc/tst-tagged-address-3.c | 48 +++++++++++++++ misc/tst-tagged-address-4-static.c | 1 + misc/tst-tagged-address-4.c | 35 +++++++++++ misc/tst-tagged-address-5.c | 25 ++++++++ misc/tst-tagged-address-6.c | 34 +++++++++++ misc/tst-tagged-address-7.c | 40 +++++++++++++ misc/tst-tagged-address-mod-5.c | 45 ++++++++++++++ misc/tst-tagged-address-mod-6.c | 34 +++++++++++ misc/tst-tagged-address-mod-7.c | 34 +++++++++++ sysdeps/generic/inline-tagged-address.h | 43 ++++++++++++++ sysdeps/generic/ldsodefs.h | 4 ++ sysdeps/mach/hurd/i386/libc.abilist | 5 ++ sysdeps/unix/sysv/linux/aarch64/libc.abilist | 5 ++ sysdeps/unix/sysv/linux/alpha/libc.abilist | 5 ++ sysdeps/unix/sysv/linux/arc/libc.abilist | 5 ++ sysdeps/unix/sysv/linux/arm/be/libc.abilist | 5 ++ sysdeps/unix/sysv/linux/arm/le/libc.abilist | 5 ++ sysdeps/unix/sysv/linux/csky/libc.abilist | 5 ++ sysdeps/unix/sysv/linux/hppa/libc.abilist | 5 ++ sysdeps/unix/sysv/linux/i386/libc.abilist | 5 ++ sysdeps/unix/sysv/linux/ia64/libc.abilist | 5 ++ .../sysv/linux/m68k/coldfire/libc.abilist | 5 ++ .../unix/sysv/linux/m68k/m680x0/libc.abilist | 5 ++ .../sysv/linux/microblaze/be/libc.abilist | 5 ++ .../sysv/linux/microblaze/le/libc.abilist | 5 ++ .../sysv/linux/mips/mips32/fpu/libc.abilist | 5 ++ .../sysv/linux/mips/mips32/nofpu/libc.abilist | 5 ++ .../sysv/linux/mips/mips64/n32/libc.abilist | 5 ++ .../sysv/linux/mips/mips64/n64/libc.abilist | 5 ++ sysdeps/unix/sysv/linux/nios2/libc.abilist | 5 ++ .../linux/powerpc/powerpc32/fpu/libc.abilist | 5 ++ .../powerpc/powerpc32/nofpu/libc.abilist | 5 ++ .../linux/powerpc/powerpc64/be/libc.abilist | 5 ++ .../linux/powerpc/powerpc64/le/libc.abilist | 5 ++ .../unix/sysv/linux/riscv/rv32/libc.abilist | 5 ++ .../unix/sysv/linux/riscv/rv64/libc.abilist | 5 ++ .../unix/sysv/linux/s390/s390-32/libc.abilist | 5 ++ .../unix/sysv/linux/s390/s390-64/libc.abilist | 5 ++ sysdeps/unix/sysv/linux/sh/be/libc.abilist | 5 ++ sysdeps/unix/sysv/linux/sh/le/libc.abilist | 5 ++ .../sysv/linux/sparc/sparc32/libc.abilist | 5 ++ .../sysv/linux/sparc/sparc64/libc.abilist | 5 ++ .../unix/sysv/linux/x86_64/64/libc.abilist | 5 ++ .../unix/sysv/linux/x86_64/x32/libc.abilist | 5 ++ 64 files changed, 942 insertions(+), 8 deletions(-) create mode 100644 bits/tagged-address-mask.h create mode 100644 bits/tagged-address.h create mode 100644 include/sys/tagged-address.h create mode 100644 manual/tagged-address.texi create mode 100644 misc/set-tagged-address-mask.c create mode 100644 misc/sys/tagged-address.h create mode 100644 misc/tagged-address.c create mode 100644 misc/tst-tagged-address-1-static.c create mode 100644 misc/tst-tagged-address-1.c create mode 100644 misc/tst-tagged-address-2-static.c create mode 100644 misc/tst-tagged-address-2.c create mode 100644 misc/tst-tagged-address-3-static.c create mode 100644 misc/tst-tagged-address-3.c create mode 100644 misc/tst-tagged-address-4-static.c create mode 100644 misc/tst-tagged-address-4.c create mode 100644 misc/tst-tagged-address-5.c create mode 100644 misc/tst-tagged-address-6.c create mode 100644 misc/tst-tagged-address-7.c create mode 100644 misc/tst-tagged-address-mod-5.c create mode 100644 misc/tst-tagged-address-mod-6.c create mode 100644 misc/tst-tagged-address-mod-7.c create mode 100644 sysdeps/generic/inline-tagged-address.h -- 2.30.2