mirror of
https://github.com/intel/llvm.git
synced 2026-01-17 23:45:25 +08:00
99558cc424
Create a new "lldb_private::CompilerDeclContext" class that will replace all direct uses of "clang::DeclContext" when used in compiler agnostic code, yet still allow for conversion to clang::DeclContext subclasses by clang specific code. This completes the abstraction of type parsing by removing all "clang::" references from the SymbolFileDWARF. The new "lldb_private::CompilerDeclContext" class abstracts decl contexts found in compiler type systems so they can be used in internal API calls. The TypeSystem is required to support CompilerDeclContexts with new pure virtual functions that start with "DeclContext" in the member function names. Converted all code that used lldb_private::ClangNamespaceDecl over to use the new CompilerDeclContext class and removed the ClangNamespaceDecl.cpp and ClangNamespaceDecl.h files.
Removed direct use of clang APIs from SBType and now use the abstract type systems to correctly explore types.
Bulk renames for things that used to return a ClangASTType which is now CompilerType:
"Type::GetClangFullType()" to "Type::GetFullCompilerType()"
"Type::GetClangLayoutType()" to "Type::GetLayoutCompilerType()"
"Type::GetClangForwardType()" to "Type::GetForwardCompilerType()"
"Value::GetClangType()" to "Value::GetCompilerType()"
"Value::SetClangType (const CompilerType &)" to "Value::SetCompilerType (const CompilerType &)"
"ValueObject::GetClangType ()" to "ValueObject::GetCompilerType()"
many more renames that are similar.
llvm-svn: 245905
464 lines
15 KiB
C++
464 lines
15 KiB
C++
//===-- LibCxx.cpp ----------------------------------------------*- 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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#include "lldb/DataFormatters/CXXFormatterFunctions.h"
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#include "lldb/Core/DataBufferHeap.h"
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#include "lldb/Core/Debugger.h"
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#include "lldb/Core/Error.h"
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#include "lldb/Core/FormatEntity.h"
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#include "lldb/Core/Stream.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/Host/Endian.h"
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#include "lldb/Symbol/ClangASTContext.h"
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#include "lldb/Target/ObjCLanguageRuntime.h"
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#include "lldb/Target/Target.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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bool
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lldb_private::formatters::LibcxxSmartPointerSummaryProvider (ValueObject& valobj, Stream& stream, const TypeSummaryOptions& options)
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{
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ValueObjectSP valobj_sp(valobj.GetNonSyntheticValue());
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if (!valobj_sp)
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return false;
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ValueObjectSP ptr_sp(valobj_sp->GetChildMemberWithName(ConstString("__ptr_"), true));
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ValueObjectSP count_sp(valobj_sp->GetChildAtNamePath( {ConstString("__cntrl_"),ConstString("__shared_owners_")} ));
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ValueObjectSP weakcount_sp(valobj_sp->GetChildAtNamePath( {ConstString("__cntrl_"),ConstString("__shared_weak_owners_")} ));
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if (!ptr_sp)
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return false;
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if (ptr_sp->GetValueAsUnsigned(0) == 0)
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{
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stream.Printf("nullptr");
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return true;
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}
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else
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{
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bool print_pointee = false;
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Error error;
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ValueObjectSP pointee_sp = ptr_sp->Dereference(error);
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if (pointee_sp && error.Success())
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{
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if (pointee_sp->DumpPrintableRepresentation(stream,
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ValueObject::eValueObjectRepresentationStyleSummary,
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lldb::eFormatInvalid,
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ValueObject::ePrintableRepresentationSpecialCasesDisable,
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false))
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print_pointee = true;
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}
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if (!print_pointee)
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stream.Printf("ptr = 0x%" PRIx64, ptr_sp->GetValueAsUnsigned(0));
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}
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if (count_sp)
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stream.Printf(" strong=%" PRIu64, 1+count_sp->GetValueAsUnsigned(0));
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if (weakcount_sp)
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stream.Printf(" weak=%" PRIu64, 1+weakcount_sp->GetValueAsUnsigned(0));
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return true;
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}
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lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::LibcxxVectorBoolSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
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SyntheticChildrenFrontEnd(*valobj_sp.get()),
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m_bool_type(),
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m_exe_ctx_ref(),
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m_count(0),
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m_base_data_address(0),
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m_children()
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{
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if (valobj_sp)
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{
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Update();
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m_bool_type = valobj_sp->GetCompilerType().GetBasicTypeFromAST(lldb::eBasicTypeBool);
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}
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}
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size_t
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lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::CalculateNumChildren ()
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{
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return m_count;
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}
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lldb::ValueObjectSP
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lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::GetChildAtIndex (size_t idx)
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{
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auto iter = m_children.find(idx),
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end = m_children.end();
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if (iter != end)
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return iter->second;
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if (idx >= m_count)
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return ValueObjectSP();
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if (m_base_data_address == 0 || m_count == 0)
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return ValueObjectSP();
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if (!m_bool_type)
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return ValueObjectSP();
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size_t byte_idx = (idx >> 3); // divide by 8 to get byte index
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size_t bit_index = (idx & 7); // efficient idx % 8 for bit index
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lldb::addr_t byte_location = m_base_data_address + byte_idx;
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ProcessSP process_sp(m_exe_ctx_ref.GetProcessSP());
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if (!process_sp)
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return ValueObjectSP();
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uint8_t byte = 0;
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uint8_t mask = 0;
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Error err;
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size_t bytes_read = process_sp->ReadMemory(byte_location, &byte, 1, err);
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if (err.Fail() || bytes_read == 0)
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return ValueObjectSP();
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switch (bit_index)
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{
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case 0:
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mask = 1; break;
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case 1:
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mask = 2; break;
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case 2:
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mask = 4; break;
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case 3:
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mask = 8; break;
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case 4:
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mask = 16; break;
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case 5:
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mask = 32; break;
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case 6:
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mask = 64; break;
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case 7:
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mask = 128; break;
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default:
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return ValueObjectSP();
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}
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bool bit_set = ((byte & mask) != 0);
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DataBufferSP buffer_sp(new DataBufferHeap(m_bool_type.GetByteSize(nullptr),0));
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if (bit_set && buffer_sp && buffer_sp->GetBytes())
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*(buffer_sp->GetBytes()) = 1; // regardless of endianness, anything non-zero is true
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StreamString name; name.Printf("[%" PRIu64 "]", (uint64_t)idx);
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ValueObjectSP retval_sp(CreateValueObjectFromData(name.GetData(), DataExtractor(buffer_sp, process_sp->GetByteOrder(), process_sp->GetAddressByteSize()), m_exe_ctx_ref, m_bool_type));
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if (retval_sp)
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m_children[idx] = retval_sp;
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return retval_sp;
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}
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/*(std::__1::vector<std::__1::allocator<bool> >) vBool = {
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__begin_ = 0x00000001001000e0
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__size_ = 56
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__cap_alloc_ = {
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std::__1::__libcpp_compressed_pair_imp<unsigned long, std::__1::allocator<unsigned long> > = {
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__first_ = 1
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}
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}
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}*/
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bool
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lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::Update()
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{
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m_children.clear();
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ValueObjectSP valobj_sp = m_backend.GetSP();
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if (!valobj_sp)
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return false;
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m_exe_ctx_ref = valobj_sp->GetExecutionContextRef();
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ValueObjectSP size_sp(valobj_sp->GetChildMemberWithName(ConstString("__size_"), true));
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if (!size_sp)
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return false;
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m_count = size_sp->GetValueAsUnsigned(0);
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if (!m_count)
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return true;
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ValueObjectSP begin_sp(valobj_sp->GetChildMemberWithName(ConstString("__begin_"), true));
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if (!begin_sp)
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{
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m_count = 0;
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return false;
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}
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m_base_data_address = begin_sp->GetValueAsUnsigned(0);
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if (!m_base_data_address)
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{
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m_count = 0;
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return false;
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}
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return false;
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}
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bool
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lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::MightHaveChildren ()
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{
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return true;
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}
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size_t
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lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name)
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{
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if (!m_count || !m_base_data_address)
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return UINT32_MAX;
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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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lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::~LibcxxVectorBoolSyntheticFrontEnd ()
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{}
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SyntheticChildrenFrontEnd*
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lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp)
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{
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if (!valobj_sp)
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return NULL;
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return (new LibcxxVectorBoolSyntheticFrontEnd(valobj_sp));
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}
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/*
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(lldb) fr var ibeg --raw --ptr-depth 1
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(std::__1::__map_iterator<std::__1::__tree_iterator<std::__1::pair<int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > >, std::__1::__tree_node<std::__1::pair<int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > >, void *> *, long> >) ibeg = {
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__i_ = {
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__ptr_ = 0x0000000100103870 {
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std::__1::__tree_node_base<void *> = {
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std::__1::__tree_end_node<std::__1::__tree_node_base<void *> *> = {
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__left_ = 0x0000000000000000
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}
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__right_ = 0x0000000000000000
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__parent_ = 0x00000001001038b0
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__is_black_ = true
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}
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__value_ = {
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first = 0
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second = { std::string }
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*/
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lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::LibCxxMapIteratorSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
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SyntheticChildrenFrontEnd(*valobj_sp.get()),
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m_pair_ptr()
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{
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if (valobj_sp)
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Update();
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}
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bool
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lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::Update()
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{
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ValueObjectSP valobj_sp = m_backend.GetSP();
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if (!valobj_sp)
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return false;
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TargetSP target_sp(valobj_sp->GetTargetSP());
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if (!target_sp)
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return false;
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if (!valobj_sp)
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return false;
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// this must be a ValueObject* because it is a child of the ValueObject we are producing children for
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// it if were a ValueObjectSP, we would end up with a loop (iterator -> synthetic -> child -> parent == iterator)
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// and that would in turn leak memory by never allowing the ValueObjects to die and free their memory
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m_pair_ptr = valobj_sp->GetValueForExpressionPath(".__i_.__ptr_->__value_",
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NULL,
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NULL,
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NULL,
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ValueObject::GetValueForExpressionPathOptions().DontCheckDotVsArrowSyntax().SetSyntheticChildrenTraversal(ValueObject::GetValueForExpressionPathOptions::SyntheticChildrenTraversal::None),
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NULL).get();
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return false;
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}
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size_t
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lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::CalculateNumChildren ()
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{
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return 2;
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}
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lldb::ValueObjectSP
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lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::GetChildAtIndex (size_t idx)
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{
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if (!m_pair_ptr)
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return lldb::ValueObjectSP();
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return m_pair_ptr->GetChildAtIndex(idx, true);
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}
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bool
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lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::MightHaveChildren ()
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{
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return true;
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}
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size_t
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lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name)
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{
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if (name == ConstString("first"))
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return 0;
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if (name == ConstString("second"))
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return 1;
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return UINT32_MAX;
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}
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lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::~LibCxxMapIteratorSyntheticFrontEnd ()
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{
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// this will be deleted when its parent dies (since it's a child object)
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//delete m_pair_ptr;
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}
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SyntheticChildrenFrontEnd*
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lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp)
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{
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if (!valobj_sp)
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return NULL;
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return (new LibCxxMapIteratorSyntheticFrontEnd(valobj_sp));
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}
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/*
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(lldb) fr var ibeg --raw --ptr-depth 1 -T
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(std::__1::__wrap_iter<int *>) ibeg = {
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(std::__1::__wrap_iter<int *>::iterator_type) __i = 0x00000001001037a0 {
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(int) *__i = 1
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}
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}
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*/
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SyntheticChildrenFrontEnd*
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lldb_private::formatters::LibCxxVectorIteratorSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp)
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{
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static ConstString g_item_name;
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if (!g_item_name)
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g_item_name.SetCString("__i");
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if (!valobj_sp)
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return NULL;
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return (new VectorIteratorSyntheticFrontEnd(valobj_sp,g_item_name));
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}
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lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::LibcxxSharedPtrSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
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SyntheticChildrenFrontEnd(*valobj_sp.get()),
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m_cntrl(NULL),
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m_count_sp(),
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m_weak_count_sp(),
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m_ptr_size(0),
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m_byte_order(lldb::eByteOrderInvalid)
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{
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if (valobj_sp)
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Update();
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}
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size_t
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lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::CalculateNumChildren ()
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{
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return (m_cntrl ? 1 : 0);
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}
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lldb::ValueObjectSP
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lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::GetChildAtIndex (size_t idx)
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{
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if (!m_cntrl)
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return lldb::ValueObjectSP();
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ValueObjectSP valobj_sp = m_backend.GetSP();
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if (!valobj_sp)
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return lldb::ValueObjectSP();
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if (idx == 0)
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return valobj_sp->GetChildMemberWithName(ConstString("__ptr_"), true);
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if (idx > 2)
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return lldb::ValueObjectSP();
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if (idx == 1)
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{
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if (!m_count_sp)
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{
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ValueObjectSP shared_owners_sp(m_cntrl->GetChildMemberWithName(ConstString("__shared_owners_"),true));
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if (!shared_owners_sp)
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return lldb::ValueObjectSP();
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uint64_t count = 1 + shared_owners_sp->GetValueAsUnsigned(0);
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DataExtractor data(&count, 8, m_byte_order, m_ptr_size);
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m_count_sp = CreateValueObjectFromData("count", data, valobj_sp->GetExecutionContextRef(), shared_owners_sp->GetCompilerType());
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}
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return m_count_sp;
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}
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else /* if (idx == 2) */
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{
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if (!m_weak_count_sp)
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{
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ValueObjectSP shared_weak_owners_sp(m_cntrl->GetChildMemberWithName(ConstString("__shared_weak_owners_"),true));
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if (!shared_weak_owners_sp)
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return lldb::ValueObjectSP();
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uint64_t count = 1 + shared_weak_owners_sp->GetValueAsUnsigned(0);
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DataExtractor data(&count, 8, m_byte_order, m_ptr_size);
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m_weak_count_sp = CreateValueObjectFromData("count", data, valobj_sp->GetExecutionContextRef(), shared_weak_owners_sp->GetCompilerType());
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}
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return m_weak_count_sp;
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}
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}
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bool
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lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::Update()
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{
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m_count_sp.reset();
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m_weak_count_sp.reset();
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m_cntrl = NULL;
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ValueObjectSP valobj_sp = m_backend.GetSP();
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if (!valobj_sp)
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return false;
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TargetSP target_sp(valobj_sp->GetTargetSP());
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if (!target_sp)
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return false;
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m_byte_order = target_sp->GetArchitecture().GetByteOrder();
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m_ptr_size = target_sp->GetArchitecture().GetAddressByteSize();
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lldb::ValueObjectSP cntrl_sp(valobj_sp->GetChildMemberWithName(ConstString("__cntrl_"),true));
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m_cntrl = cntrl_sp.get(); // need to store the raw pointer to avoid a circular dependency
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return false;
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}
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bool
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lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::MightHaveChildren ()
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{
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return true;
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}
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size_t
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lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name)
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{
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if (name == ConstString("__ptr_"))
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return 0;
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if (name == ConstString("count"))
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return 1;
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if (name == ConstString("weak_count"))
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return 2;
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return UINT32_MAX;
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}
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lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::~LibcxxSharedPtrSyntheticFrontEnd ()
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{}
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SyntheticChildrenFrontEnd*
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lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp)
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{
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if (!valobj_sp)
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return NULL;
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return (new LibcxxSharedPtrSyntheticFrontEnd(valobj_sp));
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}
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bool
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lldb_private::formatters::LibcxxContainerSummaryProvider (ValueObject& valobj, Stream& stream, const TypeSummaryOptions& options)
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{
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if (valobj.IsPointerType())
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{
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uint64_t value = valobj.GetValueAsUnsigned(0);
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if (!value)
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return false;
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stream.Printf("0x%016" PRIx64 " ", value);
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}
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return FormatEntity::FormatStringRef("size=${svar%#}", stream, NULL, NULL, NULL, &valobj, false, false);
|
|
}
|