1 /* SPDX-License-Identifier: BSD-2-Clause */ 2 /* 3 * Copyright (c) 2016, Linaro Limited 4 */ 5 #ifndef __ASAN_H 6 #define __ASAN_H 7 8 #include <stdint.h> 9 10 #define ASAN_DATA_RED_ZONE -1 11 #define ASAN_HEAP_RED_ZONE -2 12 13 #define ASAN_BLOCK_SIZE U(8) 14 #define ASAN_BLOCK_SHIFT U(3) 15 #define ASAN_BLOCK_MASK (ASAN_BLOCK_SIZE - 1) 16 17 #ifndef __ASSEMBLER__ 18 #include <compiler.h> 19 #include <string.h> 20 #include <types_ext.h> 21 22 #define ASAN_VA_REGS_MAX 32 23 24 /* Represents memory mapped region */ 25 struct asan_va_reg { 26 vaddr_t lo; 27 vaddr_t hi; 28 }; 29 30 /* Global structure with ASan metadata */ 31 struct asan_global_info { 32 /* Virtual memory regions allowed for ASan checks */ 33 size_t regs_count; 34 struct asan_va_reg regs[ASAN_VA_REGS_MAX]; 35 }; 36 37 #define GET_ASAN_INFO() (&__asan_global_info) 38 39 typedef void (*asan_panic_cb_t)(void); 40 41 void asan_add_shadowed(const void *va_begin, const void *va_end); 42 void asan_start(void); 43 void asan_panic(void); 44 void asan_set_panic_cb(asan_panic_cb_t panic_cb); 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 /*__ASSEMBLER__*/ 81 #endif /*__ASAN_H*/ 82