1 /* 2 * Copyright (C) 2019 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #pragma once 30 31 // Defines constants used as part of the interface in an experimental MTE branch 32 // of the Linux kernel, which may be found at: 33 // 34 // https://github.com/pcc/linux/tree/android-experimental-mte 35 // 36 // This interface should not be considered to be stable. 37 38 #ifdef ANDROID_EXPERIMENTAL_MTE 39 40 #define HWCAP2_MTE (1 << 18) 41 #define PROT_MTE 0x20 42 43 #define PR_MTE_TCF_SHIFT 1 44 #define PR_MTE_TCF_NONE (0UL << PR_MTE_TCF_SHIFT) 45 #define PR_MTE_TCF_SYNC (1UL << PR_MTE_TCF_SHIFT) 46 #define PR_MTE_TCF_ASYNC (2UL << PR_MTE_TCF_SHIFT) 47 #define PR_MTE_TCF_MASK (3UL << PR_MTE_TCF_SHIFT) 48 #define PR_MTE_TAG_SHIFT 3 49 #define PR_MTE_TAG_MASK (0xffffUL << PR_MTE_TAG_SHIFT) 50 51 #define SEGV_MTEAERR 8 52 #define SEGV_MTESERR 9 53 54 #define PTRACE_PEEKMTETAGS 33 55 #define PTRACE_POKEMTETAGS 34 56 57 #endif 58