| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef _LIB_UBSAN_H |
| 3 | #define _LIB_UBSAN_H |
| 4 | |
| 5 | /* |
| 6 | * ABI defined by Clang's UBSAN enum SanitizerHandler: |
| 7 | * https://github.com/llvm/llvm-project/blob/release/16.x/clang/lib/CodeGen/CodeGenFunction.h#L113 |
| 8 | */ |
| 9 | enum ubsan_checks { |
| 10 | ubsan_add_overflow, |
| 11 | ubsan_builtin_unreachable, |
| 12 | ubsan_cfi_check_fail, |
| 13 | ubsan_divrem_overflow, |
| 14 | ubsan_dynamic_type_cache_miss, |
| 15 | ubsan_float_cast_overflow, |
| 16 | ubsan_function_type_mismatch, |
| 17 | ubsan_implicit_conversion, |
| 18 | ubsan_invalid_builtin, |
| 19 | ubsan_invalid_objc_cast, |
| 20 | ubsan_load_invalid_value, |
| 21 | ubsan_missing_return, |
| 22 | ubsan_mul_overflow, |
| 23 | ubsan_negate_overflow, |
| 24 | ubsan_nullability_arg, |
| 25 | ubsan_nullability_return, |
| 26 | ubsan_nonnull_arg, |
| 27 | ubsan_nonnull_return, |
| 28 | ubsan_out_of_bounds, |
| 29 | ubsan_pointer_overflow, |
| 30 | ubsan_shift_out_of_bounds, |
| 31 | ubsan_sub_overflow, |
| 32 | ubsan_type_mismatch, |
| 33 | ubsan_alignment_assumption, |
| 34 | ubsan_vla_bound_not_positive, |
| 35 | }; |
| 36 | |
| 37 | enum { |
| 38 | type_kind_int = 0, |
| 39 | type_kind_float = 1, |
| 40 | type_unknown = 0xffff |
| 41 | }; |
| 42 | |
| 43 | struct type_descriptor { |
| 44 | u16 type_kind; |
| 45 | u16 type_info; |
| 46 | char type_name[1]; |
| 47 | }; |
| 48 | |
| 49 | struct source_location { |
| 50 | const char *file_name; |
| 51 | union { |
| 52 | unsigned long reported; |
| 53 | struct { |
| 54 | u32 line; |
| 55 | u32 column; |
| 56 | }; |
| 57 | }; |
| 58 | }; |
| 59 | |
| 60 | struct overflow_data { |
| 61 | struct source_location location; |
| 62 | struct type_descriptor *type; |
| 63 | }; |
| 64 | |
| 65 | struct type_mismatch_data { |
| 66 | struct source_location location; |
| 67 | struct type_descriptor *type; |
| 68 | unsigned long alignment; |
| 69 | unsigned char type_check_kind; |
| 70 | }; |
| 71 | |
| 72 | struct type_mismatch_data_v1 { |
| 73 | struct source_location location; |
| 74 | struct type_descriptor *type; |
| 75 | unsigned char log_alignment; |
| 76 | unsigned char type_check_kind; |
| 77 | }; |
| 78 | |
| 79 | struct type_mismatch_data_common { |
| 80 | struct source_location *location; |
| 81 | struct type_descriptor *type; |
| 82 | unsigned long alignment; |
| 83 | unsigned char type_check_kind; |
| 84 | }; |
| 85 | |
| 86 | struct nonnull_arg_data { |
| 87 | struct source_location location; |
| 88 | struct source_location attr_location; |
| 89 | int arg_index; |
| 90 | }; |
| 91 | |
| 92 | struct out_of_bounds_data { |
| 93 | struct source_location location; |
| 94 | struct type_descriptor *array_type; |
| 95 | struct type_descriptor *index_type; |
| 96 | }; |
| 97 | |
| 98 | struct shift_out_of_bounds_data { |
| 99 | struct source_location location; |
| 100 | struct type_descriptor *lhs_type; |
| 101 | struct type_descriptor *rhs_type; |
| 102 | }; |
| 103 | |
| 104 | struct unreachable_data { |
| 105 | struct source_location location; |
| 106 | }; |
| 107 | |
| 108 | struct invalid_value_data { |
| 109 | struct source_location location; |
| 110 | struct type_descriptor *type; |
| 111 | }; |
| 112 | |
| 113 | struct alignment_assumption_data { |
| 114 | struct source_location location; |
| 115 | struct source_location assumption_location; |
| 116 | struct type_descriptor *type; |
| 117 | }; |
| 118 | |
| 119 | #if defined(CONFIG_ARCH_SUPPORTS_INT128) |
| 120 | typedef __int128 s_max; |
| 121 | typedef unsigned __int128 u_max; |
| 122 | #else |
| 123 | typedef s64 s_max; |
| 124 | typedef u64 u_max; |
| 125 | #endif |
| 126 | |
| 127 | #endif |