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847 lines
24 KiB
847 lines
24 KiB
4 months ago
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//===-- NSSet.cpp ---------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "NSSet.h"
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#include "CFBasicHash.h"
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#include "Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntime.h"
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#include "Plugins/TypeSystem/Clang/TypeSystemClang.h"
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#include "lldb/Core/ValueObject.h"
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#include "lldb/Core/ValueObjectConstResult.h"
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#include "lldb/DataFormatters/FormattersHelpers.h"
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#include "lldb/Target/Language.h"
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#include "lldb/Target/Target.h"
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#include "lldb/Utility/DataBufferHeap.h"
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#include "lldb/Utility/Endian.h"
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#include "lldb/Utility/Status.h"
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#include "lldb/Utility/Stream.h"
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using namespace lldb;
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using namespace lldb_private;
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using namespace lldb_private::formatters;
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std::map<ConstString, CXXFunctionSummaryFormat::Callback> &
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NSSet_Additionals::GetAdditionalSummaries() {
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static std::map<ConstString, CXXFunctionSummaryFormat::Callback> g_map;
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return g_map;
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}
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std::map<ConstString, CXXSyntheticChildren::CreateFrontEndCallback> &
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NSSet_Additionals::GetAdditionalSynthetics() {
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static std::map<ConstString, CXXSyntheticChildren::CreateFrontEndCallback>
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g_map;
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return g_map;
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}
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namespace lldb_private {
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namespace formatters {
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class NSSetISyntheticFrontEnd : public SyntheticChildrenFrontEnd {
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public:
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NSSetISyntheticFrontEnd(lldb::ValueObjectSP valobj_sp);
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~NSSetISyntheticFrontEnd() override;
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size_t CalculateNumChildren() override;
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lldb::ValueObjectSP GetChildAtIndex(size_t idx) override;
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bool Update() override;
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bool MightHaveChildren() override;
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size_t GetIndexOfChildWithName(ConstString name) override;
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private:
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struct DataDescriptor_32 {
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uint32_t _used : 26;
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uint32_t _szidx : 6;
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};
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struct DataDescriptor_64 {
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uint64_t _used : 58;
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uint32_t _szidx : 6;
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};
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struct SetItemDescriptor {
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lldb::addr_t item_ptr;
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lldb::ValueObjectSP valobj_sp;
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};
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ExecutionContextRef m_exe_ctx_ref;
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uint8_t m_ptr_size;
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DataDescriptor_32 *m_data_32;
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DataDescriptor_64 *m_data_64;
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lldb::addr_t m_data_ptr;
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std::vector<SetItemDescriptor> m_children;
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};
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class NSCFSetSyntheticFrontEnd : public SyntheticChildrenFrontEnd {
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public:
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NSCFSetSyntheticFrontEnd(lldb::ValueObjectSP valobj_sp);
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size_t CalculateNumChildren() override;
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lldb::ValueObjectSP GetChildAtIndex(size_t idx) override;
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bool Update() override;
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bool MightHaveChildren() override;
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size_t GetIndexOfChildWithName(ConstString name) override;
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private:
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struct SetItemDescriptor {
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lldb::addr_t item_ptr;
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lldb::ValueObjectSP valobj_sp;
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};
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ExecutionContextRef m_exe_ctx_ref;
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uint8_t m_ptr_size;
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lldb::ByteOrder m_order;
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CFBasicHash m_hashtable;
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CompilerType m_pair_type;
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std::vector<SetItemDescriptor> m_children;
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};
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template <typename D32, typename D64>
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class GenericNSSetMSyntheticFrontEnd : public SyntheticChildrenFrontEnd {
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public:
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GenericNSSetMSyntheticFrontEnd(lldb::ValueObjectSP valobj_sp);
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~GenericNSSetMSyntheticFrontEnd() override;
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size_t CalculateNumChildren() override;
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lldb::ValueObjectSP GetChildAtIndex(size_t idx) override;
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bool Update() override;
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bool MightHaveChildren() override;
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size_t GetIndexOfChildWithName(ConstString name) override;
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private:
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struct SetItemDescriptor {
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lldb::addr_t item_ptr;
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lldb::ValueObjectSP valobj_sp;
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};
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ExecutionContextRef m_exe_ctx_ref;
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uint8_t m_ptr_size;
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D32 *m_data_32;
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D64 *m_data_64;
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std::vector<SetItemDescriptor> m_children;
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};
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namespace Foundation1300 {
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struct DataDescriptor_32 {
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uint32_t _used : 26;
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uint32_t _size;
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uint32_t _mutations;
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uint32_t _objs_addr;
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};
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struct DataDescriptor_64 {
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uint64_t _used : 58;
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uint64_t _size;
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uint64_t _mutations;
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uint64_t _objs_addr;
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};
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using NSSetMSyntheticFrontEnd =
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GenericNSSetMSyntheticFrontEnd<DataDescriptor_32, DataDescriptor_64>;
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}
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namespace Foundation1428 {
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struct DataDescriptor_32 {
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uint32_t _used : 26;
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uint32_t _size;
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uint32_t _objs_addr;
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uint32_t _mutations;
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};
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struct DataDescriptor_64 {
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uint64_t _used : 58;
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uint64_t _size;
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uint64_t _objs_addr;
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uint64_t _mutations;
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};
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using NSSetMSyntheticFrontEnd =
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GenericNSSetMSyntheticFrontEnd<DataDescriptor_32, DataDescriptor_64>;
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}
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namespace Foundation1437 {
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struct DataDescriptor_32 {
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uint32_t _cow;
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// __table storage
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uint32_t _objs_addr;
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uint32_t _muts;
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uint32_t _used : 26;
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uint32_t _szidx : 6;
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};
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struct DataDescriptor_64 {
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uint64_t _cow;
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// __Table storage
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uint64_t _objs_addr;
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uint32_t _muts;
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uint32_t _used : 26;
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uint32_t _szidx : 6;
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};
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using NSSetMSyntheticFrontEnd =
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GenericNSSetMSyntheticFrontEnd<DataDescriptor_32, DataDescriptor_64>;
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template <typename DD>
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uint64_t
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__NSSetMSize_Impl(lldb_private::Process &process, lldb::addr_t valobj_addr,
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Status &error) {
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const lldb::addr_t start_of_descriptor =
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valobj_addr + process.GetAddressByteSize();
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DD descriptor = DD();
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process.ReadMemory(start_of_descriptor, &descriptor, sizeof(descriptor),
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error);
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if (error.Fail()) {
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return 0;
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}
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return descriptor._used;
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}
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uint64_t
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__NSSetMSize(lldb_private::Process &process, lldb::addr_t valobj_addr,
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Status &error) {
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if (process.GetAddressByteSize() == 4) {
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return __NSSetMSize_Impl<DataDescriptor_32>(process, valobj_addr, error);
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} else {
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return __NSSetMSize_Impl<DataDescriptor_64>(process, valobj_addr, error);
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}
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}
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}
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class NSSetCodeRunningSyntheticFrontEnd : public SyntheticChildrenFrontEnd {
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public:
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NSSetCodeRunningSyntheticFrontEnd(lldb::ValueObjectSP valobj_sp);
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~NSSetCodeRunningSyntheticFrontEnd() override;
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size_t CalculateNumChildren() override;
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lldb::ValueObjectSP GetChildAtIndex(size_t idx) override;
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bool Update() override;
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bool MightHaveChildren() override;
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size_t GetIndexOfChildWithName(ConstString name) override;
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};
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} // namespace formatters
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} // namespace lldb_private
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template <bool cf_style>
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bool lldb_private::formatters::NSSetSummaryProvider(
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ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
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static ConstString g_TypeHint("NSSet");
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ProcessSP process_sp = valobj.GetProcessSP();
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if (!process_sp)
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return false;
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ObjCLanguageRuntime *runtime = ObjCLanguageRuntime::Get(*process_sp);
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if (!runtime)
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return false;
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ObjCLanguageRuntime::ClassDescriptorSP descriptor(
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runtime->GetClassDescriptor(valobj));
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if (!descriptor || !descriptor->IsValid())
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return false;
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uint32_t ptr_size = process_sp->GetAddressByteSize();
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bool is_64bit = (ptr_size == 8);
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lldb::addr_t valobj_addr = valobj.GetValueAsUnsigned(0);
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if (!valobj_addr)
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return false;
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uint64_t value = 0;
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ConstString class_name(descriptor->GetClassName());
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static const ConstString g_SetI("__NSSetI");
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static const ConstString g_OrderedSetI("__NSOrderedSetI");
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static const ConstString g_SetM("__NSSetM");
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static const ConstString g_SetCF("__NSCFSet");
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static const ConstString g_SetCFRef("CFSetRef");
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if (class_name.IsEmpty())
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return false;
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if (class_name == g_SetI || class_name == g_OrderedSetI) {
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Status error;
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value = process_sp->ReadUnsignedIntegerFromMemory(valobj_addr + ptr_size,
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ptr_size, 0, error);
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if (error.Fail())
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return false;
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value &= (is_64bit ? ~0xFC00000000000000UL : ~0xFC000000U);
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} else if (class_name == g_SetM) {
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AppleObjCRuntime *apple_runtime =
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llvm::dyn_cast_or_null<AppleObjCRuntime>(runtime);
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Status error;
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if (apple_runtime && apple_runtime->GetFoundationVersion() >= 1437) {
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value = Foundation1437::__NSSetMSize(*process_sp, valobj_addr, error);
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} else {
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value = process_sp->ReadUnsignedIntegerFromMemory(valobj_addr + ptr_size,
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ptr_size, 0, error);
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value &= (is_64bit ? ~0xFC00000000000000UL : ~0xFC000000U);
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}
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if (error.Fail())
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return false;
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} else if (class_name == g_SetCF || class_name == g_SetCFRef) {
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ExecutionContext exe_ctx(process_sp);
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CFBasicHash cfbh;
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if (!cfbh.Update(valobj_addr, exe_ctx))
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return false;
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value = cfbh.GetCount();
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} else {
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auto &map(NSSet_Additionals::GetAdditionalSummaries());
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auto iter = map.find(class_name), end = map.end();
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if (iter != end)
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return iter->second(valobj, stream, options);
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else
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return false;
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}
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std::string prefix, suffix;
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if (Language *language = Language::FindPlugin(options.GetLanguage())) {
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if (!language->GetFormatterPrefixSuffix(valobj, g_TypeHint, prefix,
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suffix)) {
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prefix.clear();
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suffix.clear();
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}
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}
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stream.Printf("%s%" PRIu64 " %s%s%s", prefix.c_str(), value, "element",
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value == 1 ? "" : "s", suffix.c_str());
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return true;
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}
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SyntheticChildrenFrontEnd *
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lldb_private::formatters::NSSetSyntheticFrontEndCreator(
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CXXSyntheticChildren *synth, lldb::ValueObjectSP valobj_sp) {
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lldb::ProcessSP process_sp(valobj_sp->GetProcessSP());
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if (!process_sp)
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return nullptr;
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ObjCLanguageRuntime *runtime = ObjCLanguageRuntime::Get(*process_sp);
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if (!runtime)
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return nullptr;
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CompilerType valobj_type(valobj_sp->GetCompilerType());
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Flags flags(valobj_type.GetTypeInfo());
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if (flags.IsClear(eTypeIsPointer)) {
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Status error;
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valobj_sp = valobj_sp->AddressOf(error);
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if (error.Fail() || !valobj_sp)
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return nullptr;
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}
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ObjCLanguageRuntime::ClassDescriptorSP descriptor(
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runtime->GetClassDescriptor(*valobj_sp));
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if (!descriptor || !descriptor->IsValid())
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return nullptr;
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ConstString class_name = descriptor->GetClassName();
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static const ConstString g_SetI("__NSSetI");
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static const ConstString g_OrderedSetI("__NSOrderedSetI");
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static const ConstString g_SetM("__NSSetM");
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static const ConstString g_SetCF("__NSCFSet");
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static const ConstString g_SetCFRef("CFSetRef");
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if (class_name.IsEmpty())
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return nullptr;
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if (class_name == g_SetI || class_name == g_OrderedSetI) {
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return (new NSSetISyntheticFrontEnd(valobj_sp));
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} else if (class_name == g_SetM) {
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AppleObjCRuntime *apple_runtime =
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llvm::dyn_cast_or_null<AppleObjCRuntime>(runtime);
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if (apple_runtime) {
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if (apple_runtime->GetFoundationVersion() >= 1437)
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return (new Foundation1437::NSSetMSyntheticFrontEnd(valobj_sp));
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else if (apple_runtime->GetFoundationVersion() >= 1428)
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return (new Foundation1428::NSSetMSyntheticFrontEnd(valobj_sp));
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else
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return (new Foundation1300::NSSetMSyntheticFrontEnd(valobj_sp));
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} else {
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return (new Foundation1300::NSSetMSyntheticFrontEnd(valobj_sp));
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}
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} else if (class_name == g_SetCF || class_name == g_SetCFRef) {
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return (new NSCFSetSyntheticFrontEnd(valobj_sp));
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} else {
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auto &map(NSSet_Additionals::GetAdditionalSynthetics());
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auto iter = map.find(class_name), end = map.end();
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if (iter != end)
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return iter->second(synth, valobj_sp);
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return nullptr;
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}
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}
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lldb_private::formatters::NSSetISyntheticFrontEnd::NSSetISyntheticFrontEnd(
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lldb::ValueObjectSP valobj_sp)
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: SyntheticChildrenFrontEnd(*valobj_sp), m_exe_ctx_ref(), m_ptr_size(8),
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m_data_32(nullptr), m_data_64(nullptr) {
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if (valobj_sp)
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Update();
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}
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lldb_private::formatters::NSSetISyntheticFrontEnd::~NSSetISyntheticFrontEnd() {
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delete m_data_32;
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m_data_32 = nullptr;
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delete m_data_64;
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m_data_64 = nullptr;
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}
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size_t
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lldb_private::formatters::NSSetISyntheticFrontEnd::GetIndexOfChildWithName(
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ConstString name) {
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const char *item_name = name.GetCString();
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uint32_t idx = ExtractIndexFromString(item_name);
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if (idx < UINT32_MAX && idx >= CalculateNumChildren())
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return UINT32_MAX;
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return idx;
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}
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size_t
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lldb_private::formatters::NSSetISyntheticFrontEnd::CalculateNumChildren() {
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if (!m_data_32 && !m_data_64)
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return 0;
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return (m_data_32 ? m_data_32->_used : m_data_64->_used);
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}
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bool lldb_private::formatters::NSSetISyntheticFrontEnd::Update() {
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m_children.clear();
|
||
|
delete m_data_32;
|
||
|
m_data_32 = nullptr;
|
||
|
delete m_data_64;
|
||
|
m_data_64 = nullptr;
|
||
|
m_ptr_size = 0;
|
||
|
ValueObjectSP valobj_sp = m_backend.GetSP();
|
||
|
if (!valobj_sp)
|
||
|
return false;
|
||
|
if (!valobj_sp)
|
||
|
return false;
|
||
|
m_exe_ctx_ref = valobj_sp->GetExecutionContextRef();
|
||
|
Status error;
|
||
|
if (valobj_sp->IsPointerType()) {
|
||
|
valobj_sp = valobj_sp->Dereference(error);
|
||
|
if (error.Fail() || !valobj_sp)
|
||
|
return false;
|
||
|
}
|
||
|
error.Clear();
|
||
|
lldb::ProcessSP process_sp(valobj_sp->GetProcessSP());
|
||
|
if (!process_sp)
|
||
|
return false;
|
||
|
m_ptr_size = process_sp->GetAddressByteSize();
|
||
|
uint64_t data_location = valobj_sp->GetAddressOf() + m_ptr_size;
|
||
|
if (m_ptr_size == 4) {
|
||
|
m_data_32 = new DataDescriptor_32();
|
||
|
process_sp->ReadMemory(data_location, m_data_32, sizeof(DataDescriptor_32),
|
||
|
error);
|
||
|
} else {
|
||
|
m_data_64 = new DataDescriptor_64();
|
||
|
process_sp->ReadMemory(data_location, m_data_64, sizeof(DataDescriptor_64),
|
||
|
error);
|
||
|
}
|
||
|
if (error.Fail())
|
||
|
return false;
|
||
|
m_data_ptr = data_location + m_ptr_size;
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
bool lldb_private::formatters::NSSetISyntheticFrontEnd::MightHaveChildren() {
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
lldb::ValueObjectSP
|
||
|
lldb_private::formatters::NSSetISyntheticFrontEnd::GetChildAtIndex(size_t idx) {
|
||
|
uint32_t num_children = CalculateNumChildren();
|
||
|
|
||
|
if (idx >= num_children)
|
||
|
return lldb::ValueObjectSP();
|
||
|
|
||
|
ProcessSP process_sp = m_exe_ctx_ref.GetProcessSP();
|
||
|
if (!process_sp)
|
||
|
return lldb::ValueObjectSP();
|
||
|
|
||
|
if (m_children.empty()) {
|
||
|
// do the scan phase
|
||
|
lldb::addr_t obj_at_idx = 0;
|
||
|
|
||
|
uint32_t tries = 0;
|
||
|
uint32_t test_idx = 0;
|
||
|
|
||
|
while (tries < num_children) {
|
||
|
obj_at_idx = m_data_ptr + (test_idx * m_ptr_size);
|
||
|
if (!process_sp)
|
||
|
return lldb::ValueObjectSP();
|
||
|
Status error;
|
||
|
obj_at_idx = process_sp->ReadPointerFromMemory(obj_at_idx, error);
|
||
|
if (error.Fail())
|
||
|
return lldb::ValueObjectSP();
|
||
|
|
||
|
test_idx++;
|
||
|
|
||
|
if (!obj_at_idx)
|
||
|
continue;
|
||
|
tries++;
|
||
|
|
||
|
SetItemDescriptor descriptor = {obj_at_idx, lldb::ValueObjectSP()};
|
||
|
|
||
|
m_children.push_back(descriptor);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (idx >= m_children.size()) // should never happen
|
||
|
return lldb::ValueObjectSP();
|
||
|
|
||
|
SetItemDescriptor &set_item = m_children[idx];
|
||
|
if (!set_item.valobj_sp) {
|
||
|
auto ptr_size = process_sp->GetAddressByteSize();
|
||
|
DataBufferHeap buffer(ptr_size, 0);
|
||
|
switch (ptr_size) {
|
||
|
case 0: // architecture has no clue - fail
|
||
|
return lldb::ValueObjectSP();
|
||
|
case 4:
|
||
|
*reinterpret_cast<uint32_t *>(buffer.GetBytes()) =
|
||
|
static_cast<uint32_t>(set_item.item_ptr);
|
||
|
break;
|
||
|
case 8:
|
||
|
*reinterpret_cast<uint64_t *>(buffer.GetBytes()) =
|
||
|
static_cast<uint64_t>(set_item.item_ptr);
|
||
|
break;
|
||
|
default:
|
||
|
lldbassert(false && "pointer size is not 4 nor 8");
|
||
|
}
|
||
|
StreamString idx_name;
|
||
|
idx_name.Printf("[%" PRIu64 "]", (uint64_t)idx);
|
||
|
|
||
|
DataExtractor data(buffer.GetBytes(), buffer.GetByteSize(),
|
||
|
process_sp->GetByteOrder(),
|
||
|
process_sp->GetAddressByteSize());
|
||
|
|
||
|
set_item.valobj_sp = CreateValueObjectFromData(
|
||
|
idx_name.GetString(), data, m_exe_ctx_ref,
|
||
|
m_backend.GetCompilerType().GetBasicTypeFromAST(
|
||
|
lldb::eBasicTypeObjCID));
|
||
|
}
|
||
|
return set_item.valobj_sp;
|
||
|
}
|
||
|
|
||
|
lldb_private::formatters::NSCFSetSyntheticFrontEnd::NSCFSetSyntheticFrontEnd(
|
||
|
lldb::ValueObjectSP valobj_sp)
|
||
|
: SyntheticChildrenFrontEnd(*valobj_sp), m_exe_ctx_ref(), m_ptr_size(8),
|
||
|
m_order(lldb::eByteOrderInvalid), m_hashtable(), m_pair_type() {}
|
||
|
|
||
|
size_t
|
||
|
lldb_private::formatters::NSCFSetSyntheticFrontEnd::GetIndexOfChildWithName(
|
||
|
ConstString name) {
|
||
|
const char *item_name = name.GetCString();
|
||
|
const uint32_t idx = ExtractIndexFromString(item_name);
|
||
|
if (idx < UINT32_MAX && idx >= CalculateNumChildren())
|
||
|
return UINT32_MAX;
|
||
|
return idx;
|
||
|
}
|
||
|
|
||
|
size_t
|
||
|
lldb_private::formatters::NSCFSetSyntheticFrontEnd::CalculateNumChildren() {
|
||
|
if (!m_hashtable.IsValid())
|
||
|
return 0;
|
||
|
return m_hashtable.GetCount();
|
||
|
}
|
||
|
|
||
|
bool lldb_private::formatters::NSCFSetSyntheticFrontEnd::Update() {
|
||
|
m_children.clear();
|
||
|
ValueObjectSP valobj_sp = m_backend.GetSP();
|
||
|
m_ptr_size = 0;
|
||
|
if (!valobj_sp)
|
||
|
return false;
|
||
|
m_exe_ctx_ref = valobj_sp->GetExecutionContextRef();
|
||
|
|
||
|
lldb::ProcessSP process_sp(valobj_sp->GetProcessSP());
|
||
|
if (!process_sp)
|
||
|
return false;
|
||
|
m_ptr_size = process_sp->GetAddressByteSize();
|
||
|
m_order = process_sp->GetByteOrder();
|
||
|
return m_hashtable.Update(valobj_sp->GetValueAsUnsigned(0), m_exe_ctx_ref);
|
||
|
}
|
||
|
|
||
|
bool lldb_private::formatters::NSCFSetSyntheticFrontEnd::MightHaveChildren() {
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
lldb::ValueObjectSP
|
||
|
lldb_private::formatters::NSCFSetSyntheticFrontEnd::GetChildAtIndex(
|
||
|
size_t idx) {
|
||
|
lldb::addr_t m_values_ptr = m_hashtable.GetValuePointer();
|
||
|
|
||
|
const uint32_t num_children = CalculateNumChildren();
|
||
|
|
||
|
if (idx >= num_children)
|
||
|
return lldb::ValueObjectSP();
|
||
|
|
||
|
if (m_children.empty()) {
|
||
|
ProcessSP process_sp = m_exe_ctx_ref.GetProcessSP();
|
||
|
if (!process_sp)
|
||
|
return lldb::ValueObjectSP();
|
||
|
|
||
|
Status error;
|
||
|
lldb::addr_t val_at_idx = 0;
|
||
|
|
||
|
uint32_t tries = 0;
|
||
|
uint32_t test_idx = 0;
|
||
|
|
||
|
// Iterate over inferior memory, reading value pointers by shifting the
|
||
|
// cursor by test_index * m_ptr_size. Returns an empty ValueObject if a read
|
||
|
// fails, otherwise, continue until the number of tries matches the number
|
||
|
// of childen.
|
||
|
while (tries < num_children) {
|
||
|
val_at_idx = m_values_ptr + (test_idx * m_ptr_size);
|
||
|
|
||
|
val_at_idx = process_sp->ReadPointerFromMemory(val_at_idx, error);
|
||
|
if (error.Fail())
|
||
|
return lldb::ValueObjectSP();
|
||
|
|
||
|
test_idx++;
|
||
|
|
||
|
if (!val_at_idx)
|
||
|
continue;
|
||
|
tries++;
|
||
|
|
||
|
SetItemDescriptor descriptor = {val_at_idx, lldb::ValueObjectSP()};
|
||
|
|
||
|
m_children.push_back(descriptor);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (idx >= m_children.size()) // should never happen
|
||
|
return lldb::ValueObjectSP();
|
||
|
|
||
|
SetItemDescriptor &set_item = m_children[idx];
|
||
|
if (!set_item.valobj_sp) {
|
||
|
|
||
|
DataBufferSP buffer_sp(new DataBufferHeap(m_ptr_size, 0));
|
||
|
|
||
|
switch (m_ptr_size) {
|
||
|
case 0: // architecture has no clue - fail
|
||
|
return lldb::ValueObjectSP();
|
||
|
case 4:
|
||
|
*reinterpret_cast<uint32_t *>(buffer_sp->GetBytes()) =
|
||
|
static_cast<uint32_t>(set_item.item_ptr);
|
||
|
break;
|
||
|
case 8:
|
||
|
*reinterpret_cast<uint64_t *>(buffer_sp->GetBytes()) =
|
||
|
static_cast<uint64_t>(set_item.item_ptr);
|
||
|
break;
|
||
|
default:
|
||
|
lldbassert(false && "pointer size is not 4 nor 8");
|
||
|
}
|
||
|
StreamString idx_name;
|
||
|
idx_name.Printf("[%" PRIu64 "]", (uint64_t)idx);
|
||
|
|
||
|
DataExtractor data(buffer_sp, m_order, m_ptr_size);
|
||
|
|
||
|
set_item.valobj_sp = CreateValueObjectFromData(
|
||
|
idx_name.GetString(), data, m_exe_ctx_ref,
|
||
|
m_backend.GetCompilerType().GetBasicTypeFromAST(
|
||
|
lldb::eBasicTypeObjCID));
|
||
|
}
|
||
|
|
||
|
return set_item.valobj_sp;
|
||
|
}
|
||
|
|
||
|
template <typename D32, typename D64>
|
||
|
lldb_private::formatters::
|
||
|
GenericNSSetMSyntheticFrontEnd<D32, D64>::GenericNSSetMSyntheticFrontEnd(
|
||
|
lldb::ValueObjectSP valobj_sp)
|
||
|
: SyntheticChildrenFrontEnd(*valobj_sp), m_exe_ctx_ref(), m_ptr_size(8),
|
||
|
m_data_32(nullptr), m_data_64(nullptr) {
|
||
|
if (valobj_sp)
|
||
|
Update();
|
||
|
}
|
||
|
|
||
|
template <typename D32, typename D64>
|
||
|
lldb_private::formatters::
|
||
|
GenericNSSetMSyntheticFrontEnd<D32, D64>::~GenericNSSetMSyntheticFrontEnd<D32, D64>() {
|
||
|
delete m_data_32;
|
||
|
m_data_32 = nullptr;
|
||
|
delete m_data_64;
|
||
|
m_data_64 = nullptr;
|
||
|
}
|
||
|
|
||
|
template <typename D32, typename D64>
|
||
|
size_t
|
||
|
lldb_private::formatters::
|
||
|
GenericNSSetMSyntheticFrontEnd<D32, D64>::GetIndexOfChildWithName(
|
||
|
ConstString name) {
|
||
|
const char *item_name = name.GetCString();
|
||
|
uint32_t idx = ExtractIndexFromString(item_name);
|
||
|
if (idx < UINT32_MAX && idx >= CalculateNumChildren())
|
||
|
return UINT32_MAX;
|
||
|
return idx;
|
||
|
}
|
||
|
|
||
|
template <typename D32, typename D64>
|
||
|
size_t
|
||
|
lldb_private::formatters::
|
||
|
GenericNSSetMSyntheticFrontEnd<D32, D64>::CalculateNumChildren() {
|
||
|
if (!m_data_32 && !m_data_64)
|
||
|
return 0;
|
||
|
return (m_data_32 ? m_data_32->_used : m_data_64->_used);
|
||
|
}
|
||
|
|
||
|
template <typename D32, typename D64>
|
||
|
bool
|
||
|
lldb_private::formatters::
|
||
|
GenericNSSetMSyntheticFrontEnd<D32, D64>::Update() {
|
||
|
m_children.clear();
|
||
|
ValueObjectSP valobj_sp = m_backend.GetSP();
|
||
|
m_ptr_size = 0;
|
||
|
delete m_data_32;
|
||
|
m_data_32 = nullptr;
|
||
|
delete m_data_64;
|
||
|
m_data_64 = nullptr;
|
||
|
if (!valobj_sp)
|
||
|
return false;
|
||
|
if (!valobj_sp)
|
||
|
return false;
|
||
|
m_exe_ctx_ref = valobj_sp->GetExecutionContextRef();
|
||
|
Status error;
|
||
|
if (valobj_sp->IsPointerType()) {
|
||
|
valobj_sp = valobj_sp->Dereference(error);
|
||
|
if (error.Fail() || !valobj_sp)
|
||
|
return false;
|
||
|
}
|
||
|
error.Clear();
|
||
|
lldb::ProcessSP process_sp(valobj_sp->GetProcessSP());
|
||
|
if (!process_sp)
|
||
|
return false;
|
||
|
m_ptr_size = process_sp->GetAddressByteSize();
|
||
|
uint64_t data_location = valobj_sp->GetAddressOf() + m_ptr_size;
|
||
|
if (m_ptr_size == 4) {
|
||
|
m_data_32 = new D32();
|
||
|
process_sp->ReadMemory(data_location, m_data_32, sizeof(D32),
|
||
|
error);
|
||
|
} else {
|
||
|
m_data_64 = new D64();
|
||
|
process_sp->ReadMemory(data_location, m_data_64, sizeof(D64),
|
||
|
error);
|
||
|
}
|
||
|
if (error.Fail())
|
||
|
return false;
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
template <typename D32, typename D64>
|
||
|
bool
|
||
|
lldb_private::formatters::
|
||
|
GenericNSSetMSyntheticFrontEnd<D32, D64>::MightHaveChildren() {
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
template <typename D32, typename D64>
|
||
|
lldb::ValueObjectSP
|
||
|
lldb_private::formatters::
|
||
|
GenericNSSetMSyntheticFrontEnd<D32, D64>::GetChildAtIndex(size_t idx) {
|
||
|
lldb::addr_t m_objs_addr =
|
||
|
(m_data_32 ? m_data_32->_objs_addr : m_data_64->_objs_addr);
|
||
|
|
||
|
uint32_t num_children = CalculateNumChildren();
|
||
|
|
||
|
if (idx >= num_children)
|
||
|
return lldb::ValueObjectSP();
|
||
|
|
||
|
ProcessSP process_sp = m_exe_ctx_ref.GetProcessSP();
|
||
|
if (!process_sp)
|
||
|
return lldb::ValueObjectSP();
|
||
|
|
||
|
if (m_children.empty()) {
|
||
|
// do the scan phase
|
||
|
lldb::addr_t obj_at_idx = 0;
|
||
|
|
||
|
uint32_t tries = 0;
|
||
|
uint32_t test_idx = 0;
|
||
|
|
||
|
while (tries < num_children) {
|
||
|
obj_at_idx = m_objs_addr + (test_idx * m_ptr_size);
|
||
|
if (!process_sp)
|
||
|
return lldb::ValueObjectSP();
|
||
|
Status error;
|
||
|
obj_at_idx = process_sp->ReadPointerFromMemory(obj_at_idx, error);
|
||
|
if (error.Fail())
|
||
|
return lldb::ValueObjectSP();
|
||
|
|
||
|
test_idx++;
|
||
|
|
||
|
if (!obj_at_idx)
|
||
|
continue;
|
||
|
tries++;
|
||
|
|
||
|
SetItemDescriptor descriptor = {obj_at_idx, lldb::ValueObjectSP()};
|
||
|
|
||
|
m_children.push_back(descriptor);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (idx >= m_children.size()) // should never happen
|
||
|
return lldb::ValueObjectSP();
|
||
|
|
||
|
SetItemDescriptor &set_item = m_children[idx];
|
||
|
if (!set_item.valobj_sp) {
|
||
|
auto ptr_size = process_sp->GetAddressByteSize();
|
||
|
DataBufferHeap buffer(ptr_size, 0);
|
||
|
switch (ptr_size) {
|
||
|
case 0: // architecture has no clue?? - fail
|
||
|
return lldb::ValueObjectSP();
|
||
|
case 4:
|
||
|
*((uint32_t *)buffer.GetBytes()) = (uint32_t)set_item.item_ptr;
|
||
|
break;
|
||
|
case 8:
|
||
|
*((uint64_t *)buffer.GetBytes()) = (uint64_t)set_item.item_ptr;
|
||
|
break;
|
||
|
default:
|
||
|
assert(false && "pointer size is not 4 nor 8 - get out of here ASAP");
|
||
|
}
|
||
|
StreamString idx_name;
|
||
|
idx_name.Printf("[%" PRIu64 "]", (uint64_t)idx);
|
||
|
|
||
|
DataExtractor data(buffer.GetBytes(), buffer.GetByteSize(),
|
||
|
process_sp->GetByteOrder(),
|
||
|
process_sp->GetAddressByteSize());
|
||
|
|
||
|
set_item.valobj_sp = CreateValueObjectFromData(
|
||
|
idx_name.GetString(), data, m_exe_ctx_ref,
|
||
|
m_backend.GetCompilerType().GetBasicTypeFromAST(
|
||
|
lldb::eBasicTypeObjCID));
|
||
|
}
|
||
|
return set_item.valobj_sp;
|
||
|
}
|
||
|
|
||
|
template bool lldb_private::formatters::NSSetSummaryProvider<true>(
|
||
|
ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options);
|
||
|
|
||
|
template bool lldb_private::formatters::NSSetSummaryProvider<false>(
|
||
|
ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options);
|