This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rGe19339f5f8c1: [lldb] Identify Swift-implemented ObjC classes
(authored by kastiglione).
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D152837/new/
https://reviews.llvm.org/D152837
Files:
lldb/include/lldb/Target/LanguageRuntime.h
lldb/source/Core/ValueObjectDynamicValue.cpp
lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCClassDescriptorV2.cpp
lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCClassDescriptorV2.h
lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.cpp
lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.h
lldb/source/Plugins/LanguageRuntime/ObjC/ObjCLanguageRuntime.h
Index: lldb/source/Plugins/LanguageRuntime/ObjC/ObjCLanguageRuntime.h
===================================================================
--- lldb/source/Plugins/LanguageRuntime/ObjC/ObjCLanguageRuntime.h
+++ lldb/source/Plugins/LanguageRuntime/ObjC/ObjCLanguageRuntime.h
@@ -24,6 +24,7 @@
#include "lldb/Target/LanguageRuntime.h"
#include "lldb/Utility/ConstString.h"
#include "lldb/Utility/ThreadSafeDenseMap.h"
+#include "lldb/lldb-enumerations.h"
#include "lldb/lldb-private.h"
class CommandObjectObjC_ClassTable_Dump;
@@ -86,6 +87,11 @@
return (m_is_cf == eLazyBoolYes);
}
+ /// Determine whether this class is implemented in Swift.
+ virtual lldb::LanguageType GetImplementationLanguage() const {
+ return lldb::eLanguageTypeObjC;
+ }
+
virtual bool IsValid() = 0;
/// There are two routines in the ObjC runtime that tagged pointer clients
Index: lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.h
===================================================================
--- lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.h
+++ lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.h
@@ -38,6 +38,8 @@
static llvm::StringRef GetPluginNameStatic() { return "apple-objc-v2"; }
+ LanguageRuntime *GetPreferredLanguageRuntime(ValueObject &in_value) override;
+
static char ID;
bool isA(const void *ClassID) const override {
Index: lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.cpp
===================================================================
--- lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.cpp
+++ lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.cpp
@@ -33,6 +33,7 @@
#include "lldb/Target/ABI.h"
#include "lldb/Target/DynamicLoader.h"
#include "lldb/Target/ExecutionContext.h"
+#include "lldb/Target/LanguageRuntime.h"
#include "lldb/Target/Platform.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/RegisterContext.h"
@@ -753,6 +754,19 @@
RegisterObjCExceptionRecognizer(process);
}
+LanguageRuntime *
+AppleObjCRuntimeV2::GetPreferredLanguageRuntime(ValueObject &in_value) {
+ if (auto process_sp = in_value.GetProcessSP()) {
+ assert(process_sp.get() == m_process);
+ if (auto descriptor_sp = GetNonKVOClassDescriptor(in_value)) {
+ LanguageType impl_lang = descriptor_sp->GetImplementationLanguage();
+ if (impl_lang != eLanguageTypeUnknown)
+ return process_sp->GetLanguageRuntime(impl_lang);
+ }
+ }
+ return nullptr;
+}
+
bool AppleObjCRuntimeV2::GetDynamicTypeAndAddress(
ValueObject &in_value, lldb::DynamicValueType use_dynamic,
TypeAndOrName &class_type_or_name, Address &address,
Index: lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCClassDescriptorV2.h
===================================================================
--- lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCClassDescriptorV2.h
+++ lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCClassDescriptorV2.h
@@ -12,6 +12,7 @@
#include <mutex>
#include "AppleObjCRuntimeV2.h"
+#include "lldb/lldb-enumerations.h"
#include "lldb/lldb-private.h"
#include "Plugins/LanguageRuntime/ObjC/ObjCLanguageRuntime.h"
@@ -34,6 +35,8 @@
return true; // any Objective-C v2 runtime class descriptor we vend is valid
}
+ lldb::LanguageType GetImplementationLanguage() const override;
+
// a custom descriptor is used for tagged pointers
bool GetTaggedPointerInfo(uint64_t *info_bits = nullptr,
uint64_t *value_bits = nullptr,
Index: lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCClassDescriptorV2.cpp
===================================================================
--- lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCClassDescriptorV2.cpp
+++ lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCClassDescriptorV2.cpp
@@ -10,8 +10,10 @@
#include "lldb/Expression/FunctionCaller.h"
#include "lldb/Target/ABI.h"
+#include "lldb/Target/Language.h"
#include "lldb/Utility/LLDBLog.h"
#include "lldb/Utility/Log.h"
+#include "lldb/lldb-enumerations.h"
using namespace lldb;
using namespace lldb_private;
@@ -668,6 +670,19 @@
return 0;
}
+// From the ObjC runtime.
+static uint8_t IS_SWIFT_STABLE = 1U << 1;
+
+LanguageType ClassDescriptorV2::GetImplementationLanguage() const {
+ std::unique_ptr<objc_class_t> objc_class;
+ if (auto *process = m_runtime.GetProcess())
+ if (Read_objc_class(process, objc_class))
+ if (objc_class->m_flags & IS_SWIFT_STABLE)
+ return lldb::eLanguageTypeSwift;
+
+ return lldb::eLanguageTypeObjC;
+}
+
ClassDescriptorV2::iVarsStorage::iVarsStorage() : m_ivars(), m_mutex() {}
size_t ClassDescriptorV2::iVarsStorage::size() { return m_ivars.size(); }
Index: lldb/source/Core/ValueObjectDynamicValue.cpp
===================================================================
--- lldb/source/Core/ValueObjectDynamicValue.cpp
+++ lldb/source/Core/ValueObjectDynamicValue.cpp
@@ -149,7 +149,18 @@
if (known_type != lldb::eLanguageTypeUnknown &&
known_type != lldb::eLanguageTypeC) {
runtime = process->GetLanguageRuntime(known_type);
- if (runtime)
+ if (auto *preferred_runtime =
+ runtime->GetPreferredLanguageRuntime(*m_parent)) {
+ // Try the preferred runtime first.
+ found_dynamic_type = preferred_runtime->GetDynamicTypeAndAddress(
+ *m_parent, m_use_dynamic, class_type_or_name, dynamic_address,
+ value_type);
+ if (found_dynamic_type)
+ // Set the operative `runtime` for later use in this function.
+ runtime = preferred_runtime;
+ }
+ if (!found_dynamic_type)
+ // Fallback to the runtime for `known_type`.
found_dynamic_type = runtime->GetDynamicTypeAndAddress(
*m_parent, m_use_dynamic, class_type_or_name, dynamic_address,
value_type);
Index: lldb/include/lldb/Target/LanguageRuntime.h
===================================================================
--- lldb/include/lldb/Target/LanguageRuntime.h
+++ lldb/include/lldb/Target/LanguageRuntime.h
@@ -67,6 +67,12 @@
virtual lldb::LanguageType GetLanguageType() const = 0;
+ /// Return the preferred language runtime instance, which in most cases will
+ /// be the current instance.
+ virtual LanguageRuntime *GetPreferredLanguageRuntime(ValueObject &in_value) {
+ return nullptr;
+ }
+
virtual bool GetObjectDescription(Stream &str, ValueObject &object) = 0;
virtual bool GetObjectDescription(Stream &str, Value &value,
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