1 //===-- CFBasicHash.h -------------------------------------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef LLDB_SOURCE_PLUGINS_LANGUAGE_OBJC_CFBASICHASH_H 10 #define LLDB_SOURCE_PLUGINS_LANGUAGE_OBJC_CFBASICHASH_H 11 12 #include "lldb/Target/Process.h" 13 #include "lldb/Target/Target.h" 14 15 namespace lldb_private { 16 17 class CFBasicHash { 18 public: 19 enum class HashType { set = 0, dict }; 20 21 CFBasicHash() = default; 22 ~CFBasicHash() = default; 23 24 bool Update(lldb::addr_t addr, ExecutionContextRef exe_ctx_rf); 25 26 bool IsValid() const; 27 IsMutable()28 bool IsMutable() const { return m_mutable; }; IsMultiVariant()29 bool IsMultiVariant() const { return m_multi; } GetType()30 HashType GetType() const { return m_type; } 31 32 size_t GetCount() const; 33 lldb::addr_t GetKeyPointer() const; 34 lldb::addr_t GetValuePointer() const; 35 36 private: 37 template <typename T> struct __CFBasicHash { 38 struct RuntimeBase { 39 T cfisa; 40 T cfinfoa; 41 } base; 42 43 struct Bits { 44 uint16_t __reserved0; 45 uint16_t __reserved1 : 2; 46 uint16_t keys_offset : 1; 47 uint16_t counts_offset : 2; 48 uint16_t counts_width : 2; 49 uint16_t __reserved2 : 9; 50 uint32_t used_buckets; // number of used buckets 51 uint64_t deleted : 16; // number of elements deleted 52 uint64_t num_buckets_idx : 8; // index to number of buckets 53 uint64_t __reserved3 : 40; 54 uint64_t __reserved4; 55 } bits; 56 57 T pointers[3]; 58 }; 59 template <typename T> bool UpdateFor(std::unique_ptr<__CFBasicHash<T>> &m_ht); 60 61 size_t GetPointerCount() const; 62 63 uint32_t m_ptr_size = UINT32_MAX; 64 lldb::ByteOrder m_byte_order = lldb::eByteOrderInvalid; 65 Address m_address = LLDB_INVALID_ADDRESS; 66 std::unique_ptr<__CFBasicHash<uint32_t>> m_ht_32 = nullptr; 67 std::unique_ptr<__CFBasicHash<uint64_t>> m_ht_64 = nullptr; 68 ExecutionContextRef m_exe_ctx_ref; 69 bool m_mutable = true; 70 bool m_multi = false; 71 HashType m_type; 72 }; 73 74 } // namespace lldb_private 75 76 #endif // LLDB_SOURCE_PLUGINS_LANGUAGE_OBJC_CFBASICHASH_H 77