| //===-- ubsan_type_hash.cpp -----------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Implementation of a hash table for fast checking of inheritance |
| // relationships. This file is only linked into C++ compilations, and is |
| // permitted to use language features which require a C++ ABI library. |
| // |
| // Most of the implementation lives in an ABI-specific source file |
| // (ubsan_type_hash_{itanium,win}.cpp). |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "ubsan_platform.h" |
| #if CAN_SANITIZE_UB |
| #include "ubsan_type_hash.h" |
| |
| #include "sanitizer_common/sanitizer_common.h" |
| |
| /// A cache of recently-checked hashes. Mini hash table with "random" evictions. |
| __ubsan::HashValue |
| __ubsan::__ubsan_vptr_type_cache[__ubsan::VptrTypeCacheSize]; |
| |
| __ubsan::DynamicTypeInfo __ubsan::getDynamicTypeInfoFromObject(void *Object) { |
| void *VtablePtr = *reinterpret_cast<void **>(Object); |
| return getDynamicTypeInfoFromVtable(VtablePtr); |
| } |
| |
| #endif // CAN_SANITIZE_UB |
