1 /* 2 * Copyright (c) 2016, Linaro Limited 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 are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright notice, 12 * this list of conditions and the following disclaimer in the documentation 13 * and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 */ 27 #ifndef __KERNEL_ASAN_H 28 #define __KERNEL_ASAN_H 29 30 31 #define ASAN_DATA_RED_ZONE -1 32 #define ASAN_HEAP_RED_ZONE -2 33 34 #define ASAN_BLOCK_SIZE 8 35 #define ASAN_BLOCK_SHIFT 3 36 #define ASAN_BLOCK_MASK (ASAN_BLOCK_SIZE - 1) 37 38 #ifndef ASM 39 #include <string.h> 40 #include <types_ext.h> 41 42 void asan_set_shadowed(const void *va_begin, const void *va_end); 43 void asan_start(void); 44 45 #ifdef CFG_CORE_SANITIZE_KADDRESS 46 void asan_tag_no_access(const void *begin, const void *end); 47 void asan_tag_access(const void *begin, const void *end); 48 void asan_tag_heap_free(const void *begin, const void *end); 49 void *asan_memset_unchecked(void *s, int c, size_t n); 50 void *asan_memcpy_unchecked(void *__restrict s1, const void *__restrict s2, 51 size_t n); 52 #else 53 static inline void asan_tag_no_access(const void *begin __unused, 54 const void *end __unused) 55 { 56 } 57 static inline void asan_tag_access(const void *begin __unused, 58 const void *end __unused) 59 { 60 } 61 static inline void asan_tag_heap_free(const void *begin __unused, 62 const void *end __unused) 63 { 64 } 65 66 static inline void *asan_memset_unchecked(void *s, int c, size_t n) 67 { 68 return memset(s, c, n); 69 } 70 71 static inline void *asan_memcpy_unchecked(void *__restrict s1, 72 const void *__restrict s2, size_t n) 73 { 74 return memcpy(s1, s2, n); 75 } 76 77 #endif 78 79 #endif /*ASM*/ 80 #endif /*__KERNEL_ASAN_H*/ 81