forked from OSchip/llvm-project
432 lines
13 KiB
C++
432 lines
13 KiB
C++
//===-- LibStdcpp.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 "LibStdcpp.h"
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// C Includes
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// C++ Includes
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// Other libraries and framework includes
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// Project includes
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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/StringPrinter.h"
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#include "lldb/DataFormatters/VectorIterator.h"
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#include "lldb/Symbol/ClangASTContext.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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namespace {
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class LibstdcppMapIteratorSyntheticFrontEnd : public SyntheticChildrenFrontEnd {
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/*
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(std::_Rb_tree_iterator<std::pair<const int, std::basic_string<char,
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std::char_traits<char>, std::allocator<char> > > >) ibeg = {
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(_Base_ptr) _M_node = 0x0000000100103910 {
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(std::_Rb_tree_color) _M_color = _S_black
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(std::_Rb_tree_node_base::_Base_ptr) _M_parent = 0x00000001001038c0
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(std::_Rb_tree_node_base::_Base_ptr) _M_left = 0x0000000000000000
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(std::_Rb_tree_node_base::_Base_ptr) _M_right = 0x0000000000000000
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}
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}
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*/
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public:
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explicit LibstdcppMapIteratorSyntheticFrontEnd(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(const ConstString &name) override;
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private:
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ExecutionContextRef m_exe_ctx_ref;
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lldb::addr_t m_pair_address;
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CompilerType m_pair_type;
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lldb::ValueObjectSP m_pair_sp;
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};
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class LibStdcppSharedPtrSyntheticFrontEnd : public SyntheticChildrenFrontEnd {
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public:
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explicit LibStdcppSharedPtrSyntheticFrontEnd(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(const ConstString &name) override;
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};
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} // end of anonymous namespace
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LibstdcppMapIteratorSyntheticFrontEnd::LibstdcppMapIteratorSyntheticFrontEnd(
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lldb::ValueObjectSP valobj_sp)
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: SyntheticChildrenFrontEnd(*valobj_sp), m_exe_ctx_ref(), m_pair_address(0),
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m_pair_type(), m_pair_sp() {
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if (valobj_sp)
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Update();
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}
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bool LibstdcppMapIteratorSyntheticFrontEnd::Update() {
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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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bool is_64bit = (target_sp->GetArchitecture().GetAddressByteSize() == 8);
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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 _M_node_sp(
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valobj_sp->GetChildMemberWithName(ConstString("_M_node"), true));
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if (!_M_node_sp)
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return false;
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m_pair_address = _M_node_sp->GetValueAsUnsigned(0);
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if (m_pair_address == 0)
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return false;
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m_pair_address += (is_64bit ? 32 : 16);
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CompilerType my_type(valobj_sp->GetCompilerType());
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if (my_type.GetNumTemplateArguments() >= 1) {
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TemplateArgumentKind kind;
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CompilerType pair_type = my_type.GetTemplateArgument(0, kind);
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if (kind != eTemplateArgumentKindType &&
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kind != eTemplateArgumentKindTemplate &&
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kind != eTemplateArgumentKindTemplateExpansion)
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return false;
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m_pair_type = pair_type;
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} else
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return false;
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return true;
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}
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size_t LibstdcppMapIteratorSyntheticFrontEnd::CalculateNumChildren() {
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return 2;
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}
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lldb::ValueObjectSP
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LibstdcppMapIteratorSyntheticFrontEnd::GetChildAtIndex(size_t idx) {
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if (m_pair_address != 0 && m_pair_type) {
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if (!m_pair_sp)
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m_pair_sp = CreateValueObjectFromAddress("pair", m_pair_address,
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m_exe_ctx_ref, m_pair_type);
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if (m_pair_sp)
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return m_pair_sp->GetChildAtIndex(idx, true);
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}
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return lldb::ValueObjectSP();
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}
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bool LibstdcppMapIteratorSyntheticFrontEnd::MightHaveChildren() { return true; }
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size_t LibstdcppMapIteratorSyntheticFrontEnd::GetIndexOfChildWithName(
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const ConstString &name) {
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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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SyntheticChildrenFrontEnd *
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lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEndCreator(
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CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) {
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return (valobj_sp ? new LibstdcppMapIteratorSyntheticFrontEnd(valobj_sp)
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: nullptr);
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}
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/*
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(lldb) fr var ibeg --ptr-depth 1
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(__gnu_cxx::__normal_iterator<int *, std::vector<int, std::allocator<int> > >)
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ibeg = {
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_M_current = 0x00000001001037a0 {
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*_M_current = 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::LibStdcppVectorIteratorSyntheticFrontEndCreator(
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CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) {
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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("_M_current");
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return (valobj_sp
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? new VectorIteratorSyntheticFrontEnd(valobj_sp, g_item_name)
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: nullptr);
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}
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lldb_private::formatters::VectorIteratorSyntheticFrontEnd::
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VectorIteratorSyntheticFrontEnd(lldb::ValueObjectSP valobj_sp,
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ConstString item_name)
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: SyntheticChildrenFrontEnd(*valobj_sp), m_exe_ctx_ref(),
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m_item_name(item_name), m_item_sp() {
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if (valobj_sp)
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Update();
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}
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bool VectorIteratorSyntheticFrontEnd::Update() {
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m_item_sp.reset();
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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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if (!valobj_sp)
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return false;
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ValueObjectSP item_ptr(valobj_sp->GetChildMemberWithName(m_item_name, true));
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if (!item_ptr)
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return false;
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if (item_ptr->GetValueAsUnsigned(0) == 0)
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return false;
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Status err;
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m_exe_ctx_ref = valobj_sp->GetExecutionContextRef();
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m_item_sp = CreateValueObjectFromAddress(
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"item", item_ptr->GetValueAsUnsigned(0), m_exe_ctx_ref,
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item_ptr->GetCompilerType().GetPointeeType());
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if (err.Fail())
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m_item_sp.reset();
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return false;
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}
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size_t VectorIteratorSyntheticFrontEnd::CalculateNumChildren() { return 1; }
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lldb::ValueObjectSP
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VectorIteratorSyntheticFrontEnd::GetChildAtIndex(size_t idx) {
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if (idx == 0)
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return m_item_sp;
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return lldb::ValueObjectSP();
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}
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bool VectorIteratorSyntheticFrontEnd::MightHaveChildren() { return true; }
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size_t VectorIteratorSyntheticFrontEnd::GetIndexOfChildWithName(
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const ConstString &name) {
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if (name == ConstString("item"))
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return 0;
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return UINT32_MAX;
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}
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bool lldb_private::formatters::LibStdcppStringSummaryProvider(
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ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
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const bool scalar_is_load_addr = true;
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AddressType addr_type;
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lldb::addr_t addr_of_string =
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valobj.GetAddressOf(scalar_is_load_addr, &addr_type);
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if (addr_of_string != LLDB_INVALID_ADDRESS) {
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switch (addr_type) {
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case eAddressTypeLoad: {
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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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StringPrinter::ReadStringAndDumpToStreamOptions options(valobj);
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Status error;
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lldb::addr_t addr_of_data =
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process_sp->ReadPointerFromMemory(addr_of_string, error);
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if (error.Fail() || addr_of_data == 0 ||
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addr_of_data == LLDB_INVALID_ADDRESS)
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return false;
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options.SetLocation(addr_of_data);
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options.SetProcessSP(process_sp);
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options.SetStream(&stream);
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options.SetNeedsZeroTermination(false);
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options.SetBinaryZeroIsTerminator(true);
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lldb::addr_t size_of_data = process_sp->ReadPointerFromMemory(
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addr_of_string + process_sp->GetAddressByteSize(), error);
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if (error.Fail())
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return false;
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options.SetSourceSize(size_of_data);
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if (!StringPrinter::ReadStringAndDumpToStream<
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StringPrinter::StringElementType::UTF8>(options)) {
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stream.Printf("Summary Unavailable");
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return true;
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} else
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return true;
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} break;
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case eAddressTypeHost:
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break;
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case eAddressTypeInvalid:
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case eAddressTypeFile:
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break;
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}
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}
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return false;
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}
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bool lldb_private::formatters::LibStdcppWStringSummaryProvider(
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ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
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const bool scalar_is_load_addr = true;
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AddressType addr_type;
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lldb::addr_t addr_of_string =
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valobj.GetAddressOf(scalar_is_load_addr, &addr_type);
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if (addr_of_string != LLDB_INVALID_ADDRESS) {
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switch (addr_type) {
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case eAddressTypeLoad: {
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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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CompilerType wchar_compiler_type =
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valobj.GetCompilerType().GetBasicTypeFromAST(lldb::eBasicTypeWChar);
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if (!wchar_compiler_type)
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return false;
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const uint32_t wchar_size = wchar_compiler_type.GetBitSize(
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nullptr); // Safe to pass NULL for exe_scope here
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StringPrinter::ReadStringAndDumpToStreamOptions options(valobj);
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Status error;
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lldb::addr_t addr_of_data =
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process_sp->ReadPointerFromMemory(addr_of_string, error);
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if (error.Fail() || addr_of_data == 0 ||
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addr_of_data == LLDB_INVALID_ADDRESS)
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return false;
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options.SetLocation(addr_of_data);
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options.SetProcessSP(process_sp);
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options.SetStream(&stream);
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options.SetNeedsZeroTermination(false);
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options.SetBinaryZeroIsTerminator(false);
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lldb::addr_t size_of_data = process_sp->ReadPointerFromMemory(
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addr_of_string + process_sp->GetAddressByteSize(), error);
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if (error.Fail())
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return false;
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options.SetSourceSize(size_of_data);
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options.SetPrefixToken("L");
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switch (wchar_size) {
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case 8:
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return StringPrinter::ReadStringAndDumpToStream<
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StringPrinter::StringElementType::UTF8>(options);
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case 16:
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return StringPrinter::ReadStringAndDumpToStream<
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StringPrinter::StringElementType::UTF16>(options);
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case 32:
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return StringPrinter::ReadStringAndDumpToStream<
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StringPrinter::StringElementType::UTF32>(options);
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default:
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stream.Printf("size for wchar_t is not valid");
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return true;
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}
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return true;
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} break;
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case eAddressTypeHost:
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break;
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case eAddressTypeInvalid:
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case eAddressTypeFile:
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break;
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}
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}
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return false;
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}
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LibStdcppSharedPtrSyntheticFrontEnd::LibStdcppSharedPtrSyntheticFrontEnd(
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lldb::ValueObjectSP valobj_sp)
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: SyntheticChildrenFrontEnd(*valobj_sp) {
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if (valobj_sp)
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Update();
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}
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size_t LibStdcppSharedPtrSyntheticFrontEnd::CalculateNumChildren() { return 1; }
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lldb::ValueObjectSP
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LibStdcppSharedPtrSyntheticFrontEnd::GetChildAtIndex(size_t idx) {
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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("_M_ptr"), true);
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else
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return lldb::ValueObjectSP();
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}
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bool LibStdcppSharedPtrSyntheticFrontEnd::Update() { return false; }
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bool LibStdcppSharedPtrSyntheticFrontEnd::MightHaveChildren() { return true; }
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size_t LibStdcppSharedPtrSyntheticFrontEnd::GetIndexOfChildWithName(
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const ConstString &name) {
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if (name == ConstString("_M_ptr"))
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return 0;
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return UINT32_MAX;
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}
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SyntheticChildrenFrontEnd *
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lldb_private::formatters::LibStdcppSharedPtrSyntheticFrontEndCreator(
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CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) {
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return (valobj_sp ? new LibStdcppSharedPtrSyntheticFrontEnd(valobj_sp)
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: nullptr);
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}
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bool lldb_private::formatters::LibStdcppSmartPointerSummaryProvider(
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ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
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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(
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valobj_sp->GetChildMemberWithName(ConstString("_M_ptr"), true));
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if (!ptr_sp)
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return false;
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ValueObjectSP usecount_sp(valobj_sp->GetChildAtNamePath(
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{ConstString("_M_refcount"), ConstString("_M_pi"),
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ConstString("_M_use_count")}));
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if (!usecount_sp)
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return false;
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if (ptr_sp->GetValueAsUnsigned(0) == 0 ||
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usecount_sp->GetValueAsUnsigned(0) == 0) {
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stream.Printf("nullptr");
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return true;
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}
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Status 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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if (pointee_sp->DumpPrintableRepresentation(
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stream, ValueObject::eValueObjectRepresentationStyleSummary,
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lldb::eFormatInvalid,
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ValueObject::PrintableRepresentationSpecialCases::eDisable,
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false)) {
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return true;
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}
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}
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stream.Printf("ptr = 0x%" PRIx64, ptr_sp->GetValueAsUnsigned(0));
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return true;
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}
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