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//===-- JavaLanguageRuntime.cpp ---------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "JavaLanguageRuntime.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Symbol/JavaASTContext.h"
#include "lldb/Symbol/Symbol.h"
#include "lldb/Symbol/SymbolContext.h"
#include "lldb/Symbol/SymbolFile.h"
#include "lldb/Symbol/Type.h"
#include "lldb/Symbol/TypeList.h"
#include "lldb/Target/SectionLoadList.h"
#include "lldb/Target/Target.h"
#include "llvm/ADT/StringRef.h"
using namespace lldb;
using namespace lldb_private;
JavaLanguageRuntime::JavaLanguageRuntime(Process *process)
: LanguageRuntime(process) {}
LanguageRuntime *
JavaLanguageRuntime::CreateInstance(Process *process,
lldb::LanguageType language) {
if (language == eLanguageTypeJava)
return new JavaLanguageRuntime(process);
return nullptr;
}
void JavaLanguageRuntime::Initialize() {
PluginManager::RegisterPlugin(GetPluginNameStatic(), "Java language runtime",
CreateInstance);
}
void JavaLanguageRuntime::Terminate() {
PluginManager::UnregisterPlugin(CreateInstance);
}
lldb_private::ConstString JavaLanguageRuntime::GetPluginNameStatic() {
static ConstString g_name("java");
return g_name;
}
lldb_private::ConstString JavaLanguageRuntime::GetPluginName() {
return GetPluginNameStatic();
}
uint32_t JavaLanguageRuntime::GetPluginVersion() { return 1; }
bool JavaLanguageRuntime::CouldHaveDynamicValue(ValueObject &in_value) {
return true;
}
static ConstString GetDynamicTypeId(ExecutionContext *exe_ctx, Target *target,
ValueObject &in_value) {
SymbolContext sc;
TypeList class_types;
llvm::DenseSet<SymbolFile *> searched_symbol_files;
size_t num_matches = target->GetImages().FindTypes(
sc, ConstString("Object"),
true, // name_is_fully_qualified
UINT32_MAX, searched_symbol_files, class_types);
for (size_t i = 0; i < num_matches; ++i) {
TypeSP type_sp = class_types.GetTypeAtIndex(i);
CompilerType compiler_type = type_sp->GetFullCompilerType();
if (compiler_type.GetMinimumLanguage() != eLanguageTypeJava ||
compiler_type.GetTypeName() != ConstString("java::lang::Object"))
continue;
if (compiler_type.GetCompleteType() && compiler_type.IsCompleteType()) {
uint64_t type_id = JavaASTContext::CalculateDynamicTypeId(
exe_ctx, compiler_type, in_value);
if (type_id != UINT64_MAX) {
char id[32];
snprintf(id, sizeof(id), "0x%" PRIX64, type_id);
return ConstString(id);
}
}
}
return ConstString();
}
bool JavaLanguageRuntime::GetDynamicTypeAndAddress(
ValueObject &in_value, lldb::DynamicValueType use_dynamic,
TypeAndOrName &class_type_or_name, Address &dynamic_address,
Value::ValueType &value_type) {
class_type_or_name.Clear();
// null references don't have a dynamic type
if (in_value.IsNilReference())
return false;
ExecutionContext exe_ctx(in_value.GetExecutionContextRef());
Target *target = exe_ctx.GetTargetPtr();
if (!target)
return false;
ConstString linkage_name;
CompilerType in_type = in_value.GetCompilerType();
if (in_type.IsPossibleDynamicType(nullptr, false, false))
linkage_name = GetDynamicTypeId(&exe_ctx, target, in_value);
else
linkage_name = JavaASTContext::GetLinkageName(in_type);
if (!linkage_name)
return false;
class_type_or_name.SetName(in_type.GetNonReferenceType().GetTypeName());
SymbolContext sc;
TypeList class_types;
llvm::DenseSet<SymbolFile *> searched_symbol_files;
size_t num_matches = target->GetImages().FindTypes(
sc, linkage_name,
true, // name_is_fully_qualified
UINT32_MAX, searched_symbol_files, class_types);
for (size_t i = 0; i < num_matches; ++i) {
TypeSP type_sp = class_types.GetTypeAtIndex(i);
CompilerType compiler_type = type_sp->GetFullCompilerType();
if (compiler_type.GetMinimumLanguage() != eLanguageTypeJava)
continue;
if (compiler_type.GetCompleteType() && compiler_type.IsCompleteType()) {
class_type_or_name.SetTypeSP(type_sp);
Value &value = in_value.GetValue();
value_type = value.GetValueType();
dynamic_address.SetRawAddress(value.GetScalar().ULongLong(0));
return true;
}
}
return false;
}
TypeAndOrName
JavaLanguageRuntime::FixUpDynamicType(const TypeAndOrName &type_and_or_name,
ValueObject &static_value) {
CompilerType static_type(static_value.GetCompilerType());
TypeAndOrName ret(type_and_or_name);
if (type_and_or_name.HasType()) {
CompilerType orig_type = type_and_or_name.GetCompilerType();
if (static_type.IsReferenceType())
ret.SetCompilerType(orig_type.GetLValueReferenceType());
}
return ret;
}
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