2 files changed, 215 insertions, 0 deletions
diff --git a/contrib/llvm-project/lldb/source/Plugins/SymbolFile/JSON/SymbolFileJSON.cpp b/contrib/llvm-project/lldb/source/Plugins/SymbolFile/JSON/SymbolFileJSON.cpp
new file mode 100644
index 000000000000..1f3ca27417e4
--- /dev/null
+++ b/contrib/llvm-project/lldb/source/Plugins/SymbolFile/JSON/SymbolFileJSON.cpp
@@ -0,0 +1,105 @@
+//===-- SymbolFileJSON.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
+//
+//===----------------------------------------------------------------------===//
+
+#include "SymbolFileJSON.h"
+
+#include "Plugins/ObjectFile/JSON/ObjectFileJSON.h"
+#include "lldb/Core/Module.h"
+#include "lldb/Core/PluginManager.h"
+#include "lldb/Symbol/CompileUnit.h"
+#include "lldb/Symbol/Function.h"
+#include "lldb/Symbol/ObjectFile.h"
+#include "lldb/Symbol/Symbol.h"
+#include "lldb/Symbol/SymbolContext.h"
+#include "lldb/Symbol/Symtab.h"
+#include "lldb/Symbol/TypeList.h"
+#include "lldb/Utility/LLDBLog.h"
+#include "lldb/Utility/Log.h"
+#include "lldb/Utility/RegularExpression.h"
+#include "lldb/Utility/Timer.h"
+#include "llvm/Support/MemoryBuffer.h"
+
+#include <memory>
+#include <optional>
+
+using namespace llvm;
+using namespace lldb;
+using namespace lldb_private;
+
+LLDB_PLUGIN_DEFINE(SymbolFileJSON)
+
+char SymbolFileJSON::ID;
+
+SymbolFileJSON::SymbolFileJSON(lldb::ObjectFileSP objfile_sp)
+    : SymbolFileCommon(std::move(objfile_sp)) {}
+
+void SymbolFileJSON::Initialize() {
+  PluginManager::RegisterPlugin(GetPluginNameStatic(),
+                                GetPluginDescriptionStatic(), CreateInstance);
+}
+
+void SymbolFileJSON::Terminate() {
+  PluginManager::UnregisterPlugin(CreateInstance);
+}
+
+llvm::StringRef SymbolFileJSON::GetPluginDescriptionStatic() {
+  return "Reads debug symbols from a JSON symbol table.";
+}
+
+SymbolFile *SymbolFileJSON::CreateInstance(ObjectFileSP objfile_sp) {
+  return new SymbolFileJSON(std::move(objfile_sp));
+}
+
+uint32_t SymbolFileJSON::CalculateAbilities() {
+  if (!m_objfile_sp || !llvm::isa<ObjectFileJSON>(*m_objfile_sp))
+    return 0;
+
+  return GlobalVariables | Functions;
+}
+
+uint32_t SymbolFileJSON::ResolveSymbolContext(const Address &so_addr,
+                                              SymbolContextItem resolve_scope,
+                                              SymbolContext &sc) {
+  std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
+  if (m_objfile_sp->GetSymtab() == nullptr)
+    return 0;
+
+  uint32_t resolved_flags = 0;
+  if (resolve_scope & eSymbolContextSymbol) {
+    sc.symbol = m_objfile_sp->GetSymtab()->FindSymbolContainingFileAddress(
+        so_addr.GetFileAddress());
+    if (sc.symbol)
+      resolved_flags |= eSymbolContextSymbol;
+  }
+  return resolved_flags;
+}
+
+CompUnitSP SymbolFileJSON::ParseCompileUnitAtIndex(uint32_t idx) { return {}; }
+
+void SymbolFileJSON::GetTypes(SymbolContextScope *sc_scope, TypeClass type_mask,
+                              lldb_private::TypeList &type_list) {}
+
+void SymbolFileJSON::AddSymbols(Symtab &symtab) {
+  if (!m_objfile_sp)
+    return;
+
+  Symtab *json_symtab = m_objfile_sp->GetSymtab();
+  if (!json_symtab)
+    return;
+
+  if (&symtab == json_symtab)
+    return;
+
+  // Merge the two symbol tables.
+  const size_t num_new_symbols = json_symtab->GetNumSymbols();
+  for (size_t i = 0; i < num_new_symbols; ++i) {
+    Symbol *s = json_symtab->SymbolAtIndex(i);
+    symtab.AddSymbol(*s);
+  }
+  symtab.Finalize();
+}
diff --git a/contrib/llvm-project/lldb/source/Plugins/SymbolFile/JSON/SymbolFileJSON.h b/contrib/llvm-project/lldb/source/Plugins/SymbolFile/JSON/SymbolFileJSON.h
new file mode 100644
index 000000000000..3dd33b3dc82f
--- /dev/null
+++ b/contrib/llvm-project/lldb/source/Plugins/SymbolFile/JSON/SymbolFileJSON.h
@@ -0,0 +1,110 @@
+//===-- SymbolFileJSON.h ----------------------------------------*- C++ -*-===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLDB_SOURCE_PLUGINS_SYMBOLFILE_JSON_SYMBOLFILEJSON_H
+#define LLDB_SOURCE_PLUGINS_SYMBOLFILE_JSON_SYMBOLFILEJSON_H
+
+#include <map>
+#include <optional>
+#include <vector>
+
+#include "lldb/Symbol/CompileUnit.h"
+#include "lldb/Symbol/SymbolFile.h"
+
+namespace lldb_private {
+
+class SymbolFileJSON : public lldb_private::SymbolFileCommon {
+  /// LLVM RTTI support.
+  static char ID;
+
+public:
+  /// LLVM RTTI support.
+  /// \{
+  bool isA(const void *ClassID) const override {
+    return ClassID == &ID || SymbolFileCommon::isA(ClassID);
+  }
+  static bool classof(const SymbolFile *obj) { return obj->isA(&ID); }
+  /// \}
+
+  SymbolFileJSON(lldb::ObjectFileSP objfile_sp);
+
+  static void Initialize();
+
+  static void Terminate();
+
+  static llvm::StringRef GetPluginNameStatic() { return "JSON"; }
+
+  static llvm::StringRef GetPluginDescriptionStatic();
+
+  static lldb_private::SymbolFile *
+  CreateInstance(lldb::ObjectFileSP objfile_sp);
+
+  llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); }
+
+  uint32_t CalculateAbilities() override;
+
+  lldb::LanguageType ParseLanguage(CompileUnit &comp_unit) override {
+    return lldb::eLanguageTypeUnknown;
+  }
+
+  size_t ParseFunctions(CompileUnit &comp_unit) override { return 0; }
+
+  bool ParseLineTable(CompileUnit &comp_unit) override { return false; }
+
+  bool ParseDebugMacros(CompileUnit &comp_unit) override { return false; }
+
+  bool ParseSupportFiles(CompileUnit &comp_unit,
+                         SupportFileList &support_files) override {
+    return false;
+  }
+
+  size_t ParseTypes(CompileUnit &cu) override { return 0; }
+
+  bool ParseImportedModules(
+      const SymbolContext &sc,
+      std::vector<lldb_private::SourceModule> &imported_modules) override {
+    return false;
+  }
+
+  size_t ParseBlocksRecursive(Function &func) override { return 0; }
+
+  size_t ParseVariablesForContext(const SymbolContext &sc) override {
+    return 0;
+  }
+
+  uint32_t CalculateNumCompileUnits() override { return 0; }
+
+  lldb::CompUnitSP ParseCompileUnitAtIndex(uint32_t index) override;
+
+  Type *ResolveTypeUID(lldb::user_id_t type_uid) override { return nullptr; }
+  std::optional<ArrayInfo> GetDynamicArrayInfoForUID(
+      lldb::user_id_t type_uid,
+      const lldb_private::ExecutionContext *exe_ctx) override {
+    return std::nullopt;
+  }
+
+  bool CompleteType(CompilerType &compiler_type) override { return false; }
+
+  uint32_t ResolveSymbolContext(const lldb_private::Address &so_addr,
+                                lldb::SymbolContextItem resolve_scope,
+                                lldb_private::SymbolContext &sc) override;
+
+  void GetTypes(lldb_private::SymbolContextScope *sc_scope,
+                lldb::TypeClass type_mask,
+                lldb_private::TypeList &type_list) override;
+
+  void AddSymbols(Symtab &symtab) override;
+
+private:
+  lldb::addr_t GetBaseFileAddress();
+
+  std::vector<std::pair<uint64_t, std::string>> m_symbols;
+};
+} // namespace lldb_private
+
+#endif // LLDB_SOURCE_PLUGINS_SYMBOLFILE_JSON_SYMBOLFILEJSON_H