1 /* SPDX-License-Identifier: BSD-2-Clause */ 2 /* 3 * Copyright (c) 2016, Linaro Limited 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright notice, 10 * this list of conditions and the following disclaimer. 11 * 12 * 2. Redistributions in binary form must reproduce the above copyright notice, 13 * this list of conditions and the following disclaimer in the documentation 14 * and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 #ifndef __KERNEL_ASAN_H 29 #define __KERNEL_ASAN_H 30 31 32 #define ASAN_DATA_RED_ZONE -1 33 #define ASAN_HEAP_RED_ZONE -2 34 35 #define ASAN_BLOCK_SIZE 8 36 #define ASAN_BLOCK_SHIFT 3 37 #define ASAN_BLOCK_MASK (ASAN_BLOCK_SIZE - 1) 38 39 #ifndef ASM 40 #include <string.h> 41 #include <types_ext.h> 42 43 void asan_set_shadowed(const void *va_begin, const void *va_end); 44 void asan_start(void); 45 46 #ifdef CFG_CORE_SANITIZE_KADDRESS 47 void asan_tag_no_access(const void *begin, const void *end); 48 void asan_tag_access(const void *begin, const void *end); 49 void asan_tag_heap_free(const void *begin, const void *end); 50 void *asan_memset_unchecked(void *s, int c, size_t n); 51 void *asan_memcpy_unchecked(void *__restrict s1, const void *__restrict s2, 52 size_t n); 53 #else 54 static inline void asan_tag_no_access(const void *begin __unused, 55 const void *end __unused) 56 { 57 } 58 static inline void asan_tag_access(const void *begin __unused, 59 const void *end __unused) 60 { 61 } 62 static inline void asan_tag_heap_free(const void *begin __unused, 63 const void *end __unused) 64 { 65 } 66 67 static inline void *asan_memset_unchecked(void *s, int c, size_t n) 68 { 69 return memset(s, c, n); 70 } 71 72 static inline void *asan_memcpy_unchecked(void *__restrict s1, 73 const void *__restrict s2, size_t n) 74 { 75 return memcpy(s1, s2, n); 76 } 77 78 #endif 79 80 #endif /*ASM*/ 81 #endif /*__KERNEL_ASAN_H*/ 82