285 lines
9.8 KiB
C++
285 lines
9.8 KiB
C++
//===-- AppleObjCRuntimeV2.h ----------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef liblldb_AppleObjCRuntimeV2_h_
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#define liblldb_AppleObjCRuntimeV2_h_
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// C Includes
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// C++ Includes
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#include <map>
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#include <memory>
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// Other libraries and framework includes
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// Project includes
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#include "lldb/lldb-private.h"
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#include "lldb/Target/ObjCLanguageRuntime.h"
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#include "AppleObjCRuntime.h"
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class RemoteNXMapTable;
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namespace lldb_private {
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class AppleObjCRuntimeV2 :
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public AppleObjCRuntime
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{
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public:
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virtual ~AppleObjCRuntimeV2();
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// These are generic runtime functions:
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virtual bool
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GetDynamicTypeAndAddress (ValueObject &in_value,
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lldb::DynamicValueType use_dynamic,
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TypeAndOrName &class_type_or_name,
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Address &address);
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virtual ClangUtilityFunction *
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CreateObjectChecker (const char *);
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//------------------------------------------------------------------
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// Static Functions
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//------------------------------------------------------------------
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static void
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Initialize();
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static void
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Terminate();
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static lldb_private::LanguageRuntime *
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CreateInstance (Process *process, lldb::LanguageType language);
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static lldb_private::ConstString
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GetPluginNameStatic();
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//------------------------------------------------------------------
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// PluginInterface protocol
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//------------------------------------------------------------------
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virtual ConstString
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GetPluginName();
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virtual uint32_t
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GetPluginVersion();
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virtual ObjCRuntimeVersions
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GetRuntimeVersion ()
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{
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return eAppleObjC_V2;
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}
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virtual size_t
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GetByteOffsetForIvar (ClangASTType &parent_qual_type, const char *ivar_name);
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virtual void
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UpdateISAToDescriptorMapIfNeeded();
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// none of these are valid ISAs - we use them to infer the type
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// of tagged pointers - if we have something meaningful to say
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// we report an actual type - otherwise, we just say tagged
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// there is no connection between the values here and the tagged pointers map
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static const ObjCLanguageRuntime::ObjCISA g_objc_Tagged_ISA = 1;
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static const ObjCLanguageRuntime::ObjCISA g_objc_Tagged_ISA_NSAtom = 2;
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static const ObjCLanguageRuntime::ObjCISA g_objc_Tagged_ISA_NSNumber = 3;
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static const ObjCLanguageRuntime::ObjCISA g_objc_Tagged_ISA_NSDateTS = 4;
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static const ObjCLanguageRuntime::ObjCISA g_objc_Tagged_ISA_NSManagedObject = 5;
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static const ObjCLanguageRuntime::ObjCISA g_objc_Tagged_ISA_NSDate = 6;
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virtual ConstString
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GetActualTypeName(ObjCLanguageRuntime::ObjCISA isa);
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virtual ClassDescriptorSP
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GetClassDescriptor (ValueObject& in_value);
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virtual ClassDescriptorSP
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GetClassDescriptorFromISA (ObjCISA isa);
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virtual TypeVendor *
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GetTypeVendor();
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virtual lldb::addr_t
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LookupRuntimeSymbol (const ConstString &name);
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protected:
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virtual lldb::BreakpointResolverSP
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CreateExceptionResolver (Breakpoint *bkpt, bool catch_bp, bool throw_bp);
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private:
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class HashTableSignature
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{
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public:
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HashTableSignature ();
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bool
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NeedsUpdate (Process *process,
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AppleObjCRuntimeV2 *runtime,
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RemoteNXMapTable &hash_table);
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void
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UpdateSignature (const RemoteNXMapTable &hash_table);
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protected:
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uint32_t m_count;
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uint32_t m_num_buckets;
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lldb::addr_t m_buckets_ptr;
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};
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class NonPointerISACache
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{
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public:
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static NonPointerISACache*
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CreateInstance (AppleObjCRuntimeV2& runtime,
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const lldb::ModuleSP& objc_module_sp);
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ObjCLanguageRuntime::ClassDescriptorSP
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GetClassDescriptor (ObjCISA isa);
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private:
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NonPointerISACache (AppleObjCRuntimeV2& runtime,
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uint64_t objc_debug_isa_class_mask,
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uint64_t objc_debug_isa_magic_mask,
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uint64_t objc_debug_isa_magic_value);
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bool
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EvaluateNonPointerISA (ObjCISA isa, ObjCISA& ret_isa);
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AppleObjCRuntimeV2& m_runtime;
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std::map<ObjCISA,ObjCLanguageRuntime::ClassDescriptorSP> m_cache;
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uint64_t m_objc_debug_isa_class_mask;
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uint64_t m_objc_debug_isa_magic_mask;
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uint64_t m_objc_debug_isa_magic_value;
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DISALLOW_COPY_AND_ASSIGN(NonPointerISACache);
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};
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class TaggedPointerVendor
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{
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public:
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static TaggedPointerVendor*
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CreateInstance (AppleObjCRuntimeV2& runtime,
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const lldb::ModuleSP& objc_module_sp);
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virtual bool
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IsPossibleTaggedPointer (lldb::addr_t ptr) = 0;
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virtual ObjCLanguageRuntime::ClassDescriptorSP
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GetClassDescriptor (lldb::addr_t ptr) = 0;
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virtual
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~TaggedPointerVendor () { }
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protected:
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AppleObjCRuntimeV2& m_runtime;
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TaggedPointerVendor (AppleObjCRuntimeV2& runtime) :
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m_runtime(runtime)
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{
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}
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private:
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DISALLOW_COPY_AND_ASSIGN(TaggedPointerVendor);
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};
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class TaggedPointerVendorRuntimeAssisted : public TaggedPointerVendor
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{
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public:
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virtual bool
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IsPossibleTaggedPointer (lldb::addr_t ptr);
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virtual ObjCLanguageRuntime::ClassDescriptorSP
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GetClassDescriptor (lldb::addr_t ptr);
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protected:
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TaggedPointerVendorRuntimeAssisted (AppleObjCRuntimeV2& runtime,
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uint64_t objc_debug_taggedpointer_mask,
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uint32_t objc_debug_taggedpointer_slot_shift,
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uint32_t objc_debug_taggedpointer_slot_mask,
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uint32_t objc_debug_taggedpointer_payload_lshift,
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uint32_t objc_debug_taggedpointer_payload_rshift,
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lldb::addr_t objc_debug_taggedpointer_classes);
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typedef std::map<uint8_t,ObjCLanguageRuntime::ClassDescriptorSP> Cache;
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typedef Cache::iterator CacheIterator;
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Cache m_cache;
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uint64_t m_objc_debug_taggedpointer_mask;
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uint32_t m_objc_debug_taggedpointer_slot_shift;
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uint32_t m_objc_debug_taggedpointer_slot_mask;
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uint32_t m_objc_debug_taggedpointer_payload_lshift;
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uint32_t m_objc_debug_taggedpointer_payload_rshift;
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lldb::addr_t m_objc_debug_taggedpointer_classes;
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friend class AppleObjCRuntimeV2::TaggedPointerVendor;
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DISALLOW_COPY_AND_ASSIGN(TaggedPointerVendorRuntimeAssisted);
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};
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class TaggedPointerVendorLegacy : public TaggedPointerVendor
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{
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public:
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virtual bool
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IsPossibleTaggedPointer (lldb::addr_t ptr);
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virtual ObjCLanguageRuntime::ClassDescriptorSP
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GetClassDescriptor (lldb::addr_t ptr);
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protected:
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TaggedPointerVendorLegacy (AppleObjCRuntimeV2& runtime) :
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TaggedPointerVendor (runtime)
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{
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}
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friend class AppleObjCRuntimeV2::TaggedPointerVendor;
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DISALLOW_COPY_AND_ASSIGN(TaggedPointerVendorLegacy);
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};
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AppleObjCRuntimeV2 (Process *process,
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const lldb::ModuleSP &objc_module_sp);
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bool
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IsTaggedPointer(lldb::addr_t ptr);
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lldb::addr_t
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GetISAHashTablePointer ();
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bool
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UpdateISAToDescriptorMapFromMemory (RemoteNXMapTable &hash_table);
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bool
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UpdateISAToDescriptorMapDynamic(RemoteNXMapTable &hash_table);
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void
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ParseClassInfoArray (const lldb_private::DataExtractor &data,
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uint32_t num_class_infos);
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bool
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UpdateISAToDescriptorMapSharedCache ();
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lldb::addr_t
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GetSharedCacheReadOnlyAddress();
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std::unique_ptr<ClangFunction> m_get_class_info_function;
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std::unique_ptr<ClangUtilityFunction> m_get_class_info_code;
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lldb::addr_t m_get_class_info_args;
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Mutex m_get_class_info_args_mutex;
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std::unique_ptr<ClangFunction> m_get_shared_cache_class_info_function;
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std::unique_ptr<ClangUtilityFunction> m_get_shared_cache_class_info_code;
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lldb::addr_t m_get_shared_cache_class_info_args;
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Mutex m_get_shared_cache_class_info_args_mutex;
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std::unique_ptr<TypeVendor> m_type_vendor_ap;
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lldb::addr_t m_isa_hash_table_ptr;
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HashTableSignature m_hash_signature;
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bool m_has_object_getClass;
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bool m_loaded_objc_opt;
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std::unique_ptr<NonPointerISACache> m_non_pointer_isa_cache_ap;
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std::unique_ptr<TaggedPointerVendor> m_tagged_pointer_vendor_ap;
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};
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} // namespace lldb_private
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#endif // liblldb_AppleObjCRuntimeV2_h_
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