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| //===-- AppleDWARFIndex.cpp ------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "Plugins/SymbolFile/DWARF/AppleDWARFIndex.h"
#include "Plugins/SymbolFile/DWARF/DWARFDeclContext.h"
#include "Plugins/SymbolFile/DWARF/DWARFUnit.h"
#include "Plugins/SymbolFile/DWARF/LogChannelDWARF.h"
#include "lldb/Core/Module.h"
#include "lldb/Symbol/Function.h"
using namespace lldb_private;
using namespace lldb;
std::unique_ptr<AppleDWARFIndex> AppleDWARFIndex::Create(
Module &module, DWARFDataExtractor apple_names,
DWARFDataExtractor apple_namespaces, DWARFDataExtractor apple_types,
DWARFDataExtractor apple_objc, DWARFDataExtractor debug_str) {
auto apple_names_table_up = std::make_unique<DWARFMappedHash::MemoryTable>(
apple_names, debug_str, ".apple_names");
if (!apple_names_table_up->IsValid())
apple_names_table_up.reset();
auto apple_namespaces_table_up =
std::make_unique<DWARFMappedHash::MemoryTable>(
apple_namespaces, debug_str, ".apple_namespaces");
if (!apple_namespaces_table_up->IsValid())
apple_namespaces_table_up.reset();
auto apple_types_table_up = std::make_unique<DWARFMappedHash::MemoryTable>(
apple_types, debug_str, ".apple_types");
if (!apple_types_table_up->IsValid())
apple_types_table_up.reset();
auto apple_objc_table_up = std::make_unique<DWARFMappedHash::MemoryTable>(
apple_objc, debug_str, ".apple_objc");
if (!apple_objc_table_up->IsValid())
apple_objc_table_up.reset();
if (apple_names_table_up || apple_names_table_up || apple_types_table_up ||
apple_objc_table_up)
return std::make_unique<AppleDWARFIndex>(
module, std::move(apple_names_table_up),
std::move(apple_namespaces_table_up), std::move(apple_types_table_up),
std::move(apple_objc_table_up));
return nullptr;
}
void AppleDWARFIndex::GetGlobalVariables(ConstString basename, DIEArray &offsets) {
if (m_apple_names_up)
m_apple_names_up->FindByName(basename.GetStringRef(), offsets);
}
void AppleDWARFIndex::GetGlobalVariables(const RegularExpression ®ex,
DIEArray &offsets) {
if (!m_apple_names_up)
return;
DWARFMappedHash::DIEInfoArray hash_data;
if (m_apple_names_up->AppendAllDIEsThatMatchingRegex(regex, hash_data))
DWARFMappedHash::ExtractDIEArray(hash_data, offsets);
}
void AppleDWARFIndex::GetGlobalVariables(const DWARFUnit &cu,
DIEArray &offsets) {
if (!m_apple_names_up)
return;
DWARFMappedHash::DIEInfoArray hash_data;
if (m_apple_names_up->AppendAllDIEsInRange(cu.GetOffset(),
cu.GetNextUnitOffset(), hash_data))
DWARFMappedHash::ExtractDIEArray(hash_data, offsets);
}
void AppleDWARFIndex::GetObjCMethods(ConstString class_name,
DIEArray &offsets) {
if (m_apple_objc_up)
m_apple_objc_up->FindByName(class_name.GetStringRef(), offsets);
}
void AppleDWARFIndex::GetCompleteObjCClass(ConstString class_name,
bool must_be_implementation,
DIEArray &offsets) {
if (m_apple_types_up) {
m_apple_types_up->FindCompleteObjCClassByName(
class_name.GetStringRef(), offsets, must_be_implementation);
}
}
void AppleDWARFIndex::GetTypes(ConstString name, DIEArray &offsets) {
if (m_apple_types_up)
m_apple_types_up->FindByName(name.GetStringRef(), offsets);
}
void AppleDWARFIndex::GetTypes(const DWARFDeclContext &context,
DIEArray &offsets) {
if (!m_apple_types_up)
return;
Log *log = LogChannelDWARF::GetLogIfAny(DWARF_LOG_TYPE_COMPLETION |
DWARF_LOG_LOOKUPS);
const bool has_tag = m_apple_types_up->GetHeader().header_data.ContainsAtom(
DWARFMappedHash::eAtomTypeTag);
const bool has_qualified_name_hash =
m_apple_types_up->GetHeader().header_data.ContainsAtom(
DWARFMappedHash::eAtomTypeQualNameHash);
const ConstString type_name(context[0].name);
const dw_tag_t tag = context[0].tag;
if (has_tag && has_qualified_name_hash) {
const char *qualified_name = context.GetQualifiedName();
const uint32_t qualified_name_hash = llvm::djbHash(qualified_name);
if (log)
m_module.LogMessage(log, "FindByNameAndTagAndQualifiedNameHash()");
m_apple_types_up->FindByNameAndTagAndQualifiedNameHash(
type_name.GetStringRef(), tag, qualified_name_hash, offsets);
return;
}
if (has_tag) {
// When searching for a scoped type (for example,
// "std::vector<int>::const_iterator") searching for the innermost
// name alone ("const_iterator") could yield many false
// positives. By searching for the parent type ("vector<int>")
// first we can avoid extracting type DIEs from object files that
// would fail the filter anyway.
if (!has_qualified_name_hash && (context.GetSize() > 1) &&
(context[1].tag == DW_TAG_class_type ||
context[1].tag == DW_TAG_structure_type)) {
DIEArray class_matches;
m_apple_types_up->FindByName(context[1].name, class_matches);
if (class_matches.empty())
return;
}
if (log)
m_module.LogMessage(log, "FindByNameAndTag()");
m_apple_types_up->FindByNameAndTag(type_name.GetStringRef(), tag, offsets);
return;
}
m_apple_types_up->FindByName(type_name.GetStringRef(), offsets);
}
void AppleDWARFIndex::GetNamespaces(ConstString name, DIEArray &offsets) {
if (m_apple_namespaces_up)
m_apple_namespaces_up->FindByName(name.GetStringRef(), offsets);
}
void AppleDWARFIndex::GetFunctions(ConstString name, SymbolFileDWARF &dwarf,
const CompilerDeclContext &parent_decl_ctx,
uint32_t name_type_mask,
std::vector<DWARFDIE> &dies) {
DIEArray offsets;
m_apple_names_up->FindByName(name.GetStringRef(), offsets);
for (const DIERef &die_ref : offsets) {
ProcessFunctionDIE(name.GetStringRef(), die_ref, dwarf, parent_decl_ctx,
name_type_mask, dies);
}
}
void AppleDWARFIndex::GetFunctions(const RegularExpression ®ex,
DIEArray &offsets) {
if (!m_apple_names_up)
return;
DWARFMappedHash::DIEInfoArray hash_data;
if (m_apple_names_up->AppendAllDIEsThatMatchingRegex(regex, hash_data))
DWARFMappedHash::ExtractDIEArray(hash_data, offsets);
}
void AppleDWARFIndex::ReportInvalidDIERef(const DIERef &ref,
llvm::StringRef name) {
m_module.ReportErrorIfModifyDetected(
"the DWARF debug information has been modified (accelerator table had "
"bad die 0x%8.8x for '%s')\n",
ref.die_offset(), name.str().c_str());
}
void AppleDWARFIndex::Dump(Stream &s) {
if (m_apple_names_up)
s.PutCString(".apple_names index present\n");
if (m_apple_namespaces_up)
s.PutCString(".apple_namespaces index present\n");
if (m_apple_types_up)
s.PutCString(".apple_types index present\n");
if (m_apple_objc_up)
s.PutCString(".apple_objc index present\n");
// TODO: Dump index contents
}
|