1 //===-- SymbolFileJSON.cpp ----------------------------------------------===// 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 #include "SymbolFileJSON.h" 10 11 #include "Plugins/ObjectFile/JSON/ObjectFileJSON.h" 12 #include "lldb/Core/Module.h" 13 #include "lldb/Core/PluginManager.h" 14 #include "lldb/Symbol/CompileUnit.h" 15 #include "lldb/Symbol/Function.h" 16 #include "lldb/Symbol/ObjectFile.h" 17 #include "lldb/Symbol/Symbol.h" 18 #include "lldb/Symbol/SymbolContext.h" 19 #include "lldb/Symbol/Symtab.h" 20 #include "lldb/Symbol/TypeList.h" 21 #include "lldb/Utility/LLDBLog.h" 22 #include "lldb/Utility/Log.h" 23 #include "lldb/Utility/RegularExpression.h" 24 #include "lldb/Utility/Timer.h" 25 #include "llvm/Support/MemoryBuffer.h" 26 27 #include <memory> 28 #include <optional> 29 30 using namespace llvm; 31 using namespace lldb; 32 using namespace lldb_private; 33 34 LLDB_PLUGIN_DEFINE(SymbolFileJSON) 35 36 char SymbolFileJSON::ID; 37 38 SymbolFileJSON::SymbolFileJSON(lldb::ObjectFileSP objfile_sp) 39 : SymbolFileCommon(std::move(objfile_sp)) {} 40 41 void SymbolFileJSON::Initialize() { 42 PluginManager::RegisterPlugin(GetPluginNameStatic(), 43 GetPluginDescriptionStatic(), CreateInstance); 44 } 45 46 void SymbolFileJSON::Terminate() { 47 PluginManager::UnregisterPlugin(CreateInstance); 48 } 49 50 llvm::StringRef SymbolFileJSON::GetPluginDescriptionStatic() { 51 return "Reads debug symbols from a JSON symbol table."; 52 } 53 54 SymbolFile *SymbolFileJSON::CreateInstance(ObjectFileSP objfile_sp) { 55 return new SymbolFileJSON(std::move(objfile_sp)); 56 } 57 58 uint32_t SymbolFileJSON::CalculateAbilities() { 59 if (!m_objfile_sp || !llvm::isa<ObjectFileJSON>(*m_objfile_sp)) 60 return 0; 61 62 return GlobalVariables | Functions; 63 } 64 65 uint32_t SymbolFileJSON::ResolveSymbolContext(const Address &so_addr, 66 SymbolContextItem resolve_scope, 67 SymbolContext &sc) { 68 std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 69 if (m_objfile_sp->GetSymtab() == nullptr) 70 return 0; 71 72 uint32_t resolved_flags = 0; 73 if (resolve_scope & eSymbolContextSymbol) { 74 sc.symbol = m_objfile_sp->GetSymtab()->FindSymbolContainingFileAddress( 75 so_addr.GetFileAddress()); 76 if (sc.symbol) 77 resolved_flags |= eSymbolContextSymbol; 78 } 79 return resolved_flags; 80 } 81 82 CompUnitSP SymbolFileJSON::ParseCompileUnitAtIndex(uint32_t idx) { return {}; } 83 84 void SymbolFileJSON::GetTypes(SymbolContextScope *sc_scope, TypeClass type_mask, 85 lldb_private::TypeList &type_list) {} 86 87 void SymbolFileJSON::AddSymbols(Symtab &symtab) { 88 if (!m_objfile_sp) 89 return; 90 91 Symtab *json_symtab = m_objfile_sp->GetSymtab(); 92 if (!json_symtab) 93 return; 94 95 if (&symtab == json_symtab) 96 return; 97 98 // Merge the two symbol tables. 99 const size_t num_new_symbols = json_symtab->GetNumSymbols(); 100 for (size_t i = 0; i < num_new_symbols; ++i) { 101 Symbol *s = json_symtab->SymbolAtIndex(i); 102 symtab.AddSymbol(*s); 103 } 104 symtab.Finalize(); 105 } 106