king
/
v811_spc009
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from 'd5f7aa4152'
${ noResults }
v811_spc009/external/llvm-project/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.cpp

1449 lines
54 KiB
Raw Blame History

//===-- SymbolFileDWARFDebugMap.cpp ---------------------------------------===//
//
// 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 "SymbolFileDWARFDebugMap.h"
#include "DWARFDebugAranges.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/ModuleList.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Core/Section.h"
#include "lldb/Host/FileSystem.h"
#include "lldb/Utility/RangeMap.h"
#include "lldb/Utility/RegularExpression.h"
#include "lldb/Utility/Timer.h"
//#define DEBUG_OSO_DMAP // DO NOT CHECKIN WITH THIS NOT COMMENTED OUT
#if defined(DEBUG_OSO_DMAP)
#include "lldb/Core/StreamFile.h"
#endif
#include "lldb/Symbol/CompileUnit.h"
#include "lldb/Symbol/LineTable.h"
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Symbol/SymbolVendor.h"
#include "lldb/Symbol/TypeMap.h"
#include "lldb/Symbol/VariableList.h"
#include "llvm/Support/ScopedPrinter.h"
#include "LogChannelDWARF.h"
#include "SymbolFileDWARF.h"
#include <memory>
using namespace lldb;
using namespace lldb_private;
char SymbolFileDWARFDebugMap::ID;
// Subclass lldb_private::Module so we can intercept the
// "Module::GetObjectFile()" (so we can fixup the object file sections) and
// also for "Module::GetSymbolFile()" (so we can fixup the symbol file id.
const SymbolFileDWARFDebugMap::FileRangeMap &
SymbolFileDWARFDebugMap::CompileUnitInfo::GetFileRangeMap(
SymbolFileDWARFDebugMap *exe_symfile) {
if (file_range_map_valid)
return file_range_map;
file_range_map_valid = true;
Module *oso_module = exe_symfile->GetModuleByCompUnitInfo(this);
if (!oso_module)
return file_range_map;
ObjectFile *oso_objfile = oso_module->GetObjectFile();
if (!oso_objfile)
return file_range_map;
Log *log(LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_MAP));
LLDB_LOGF(
log,
"%p: SymbolFileDWARFDebugMap::CompileUnitInfo::GetFileRangeMap ('%s')",
static_cast<void *>(this),
oso_module->GetSpecificationDescription().c_str());
std::vector<SymbolFileDWARFDebugMap::CompileUnitInfo *> cu_infos;
if (exe_symfile->GetCompUnitInfosForModule(oso_module, cu_infos)) {
for (auto comp_unit_info : cu_infos) {
Symtab *exe_symtab = exe_symfile->GetObjectFile()->GetSymtab();
ModuleSP oso_module_sp(oso_objfile->GetModule());
Symtab *oso_symtab = oso_objfile->GetSymtab();
/// const uint32_t fun_resolve_flags = SymbolContext::Module |
/// eSymbolContextCompUnit | eSymbolContextFunction;
// SectionList *oso_sections = oso_objfile->Sections();
// Now we need to make sections that map from zero based object file
// addresses to where things ended up in the main executable.
assert(comp_unit_info->first_symbol_index != UINT32_MAX);
// End index is one past the last valid symbol index
const uint32_t oso_end_idx = comp_unit_info->last_symbol_index + 1;
for (uint32_t idx = comp_unit_info->first_symbol_index +
2; // Skip the N_SO and N_OSO
idx < oso_end_idx; ++idx) {
Symbol *exe_symbol = exe_symtab->SymbolAtIndex(idx);
if (exe_symbol) {
if (!exe_symbol->IsDebug())
continue;
switch (exe_symbol->GetType()) {
default:
break;
case eSymbolTypeCode: {
// For each N_FUN, or function that we run into in the debug map we
// make a new section that we add to the sections found in the .o
// file. This new section has the file address set to what the
// addresses are in the .o file, and the load address is adjusted
// to match where it ended up in the final executable! We do this
// before we parse any dwarf info so that when it goes get parsed
// all section/offset addresses that get registered will resolve
// correctly to the new addresses in the main executable.
// First we find the original symbol in the .o file's symbol table
Symbol *oso_fun_symbol = oso_symtab->FindFirstSymbolWithNameAndType(
exe_symbol->GetMangled().GetName(Mangled::ePreferMangled),
eSymbolTypeCode, Symtab::eDebugNo, Symtab::eVisibilityAny);
if (oso_fun_symbol) {
// Add the inverse OSO file address to debug map entry mapping
exe_symfile->AddOSOFileRange(
this, exe_symbol->GetAddressRef().GetFileAddress(),
exe_symbol->GetByteSize(),
oso_fun_symbol->GetAddressRef().GetFileAddress(),
oso_fun_symbol->GetByteSize());
}
} break;
case eSymbolTypeData: {
// For each N_GSYM we remap the address for the global by making a
// new section that we add to the sections found in the .o file.
// This new section has the file address set to what the addresses
// are in the .o file, and the load address is adjusted to match
// where it ended up in the final executable! We do this before we
// parse any dwarf info so that when it goes get parsed all
// section/offset addresses that get registered will resolve
// correctly to the new addresses in the main executable. We
// initially set the section size to be 1 byte, but will need to
// fix up these addresses further after all globals have been
// parsed to span the gaps, or we can find the global variable
// sizes from the DWARF info as we are parsing.
// Next we find the non-stab entry that corresponds to the N_GSYM
// in the .o file
Symbol *oso_gsym_symbol =
oso_symtab->FindFirstSymbolWithNameAndType(
exe_symbol->GetMangled().GetName(Mangled::ePreferMangled),
eSymbolTypeData, Symtab::eDebugNo, Symtab::eVisibilityAny);
if (exe_symbol && oso_gsym_symbol && exe_symbol->ValueIsAddress() &&
oso_gsym_symbol->ValueIsAddress()) {
// Add the inverse OSO file address to debug map entry mapping
exe_symfile->AddOSOFileRange(
this, exe_symbol->GetAddressRef().GetFileAddress(),
exe_symbol->GetByteSize(),
oso_gsym_symbol->GetAddressRef().GetFileAddress(),
oso_gsym_symbol->GetByteSize());
}
} break;
}
}
}
exe_symfile->FinalizeOSOFileRanges(this);
// We don't need the symbols anymore for the .o files
oso_objfile->ClearSymtab();
}
}
return file_range_map;
}
class DebugMapModule : public Module {
public:
DebugMapModule(const ModuleSP &exe_module_sp, uint32_t cu_idx,
const FileSpec &file_spec, const ArchSpec &arch,
const ConstString *object_name, off_t object_offset,
const llvm::sys::TimePoint<> object_mod_time)
: Module(file_spec, arch, object_name, object_offset, object_mod_time),
m_exe_module_wp(exe_module_sp), m_cu_idx(cu_idx) {}
~DebugMapModule() override = default;
SymbolFile *
GetSymbolFile(bool can_create = true,
lldb_private::Stream *feedback_strm = nullptr) override {
// Scope for locker
if (m_symfile_up.get() || !can_create)
return m_symfile_up ? m_symfile_up->GetSymbolFile() : nullptr;
ModuleSP exe_module_sp(m_exe_module_wp.lock());
if (exe_module_sp) {
// Now get the object file outside of a locking scope
ObjectFile *oso_objfile = GetObjectFile();
if (oso_objfile) {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
if (SymbolFile *symfile =
Module::GetSymbolFile(can_create, feedback_strm)) {
// Set a pointer to this class to set our OSO DWARF file know that
// the DWARF is being used along with a debug map and that it will
// have the remapped sections that we do below.
SymbolFileDWARF *oso_symfile =
SymbolFileDWARFDebugMap::GetSymbolFileAsSymbolFileDWARF(symfile);
if (!oso_symfile)
return nullptr;
ObjectFile *exe_objfile = exe_module_sp->GetObjectFile();
SymbolFile *exe_symfile = exe_module_sp->GetSymbolFile();
if (exe_objfile && exe_symfile) {
oso_symfile->SetDebugMapModule(exe_module_sp);
// Set the ID of the symbol file DWARF to the index of the OSO
// shifted left by 32 bits to provide a unique prefix for any
// UserID's that get created in the symbol file.
oso_symfile->SetID(((uint64_t)m_cu_idx + 1ull) << 32ull);
}
return symfile;
}
}
}
return nullptr;
}
protected:
ModuleWP m_exe_module_wp;
const uint32_t m_cu_idx;
};
void SymbolFileDWARFDebugMap::Initialize() {
PluginManager::RegisterPlugin(GetPluginNameStatic(),
GetPluginDescriptionStatic(), CreateInstance);
}
void SymbolFileDWARFDebugMap::Terminate() {
PluginManager::UnregisterPlugin(CreateInstance);
}
lldb_private::ConstString SymbolFileDWARFDebugMap::GetPluginNameStatic() {
static ConstString g_name("dwarf-debugmap");
return g_name;
}
const char *SymbolFileDWARFDebugMap::GetPluginDescriptionStatic() {
return "DWARF and DWARF3 debug symbol file reader (debug map).";
}
SymbolFile *SymbolFileDWARFDebugMap::CreateInstance(ObjectFileSP objfile_sp) {
return new SymbolFileDWARFDebugMap(std::move(objfile_sp));
}
SymbolFileDWARFDebugMap::SymbolFileDWARFDebugMap(ObjectFileSP objfile_sp)
: SymbolFile(std::move(objfile_sp)), m_flags(), m_compile_unit_infos(),
m_func_indexes(), m_glob_indexes(),
m_supports_DW_AT_APPLE_objc_complete_type(eLazyBoolCalculate) {}
SymbolFileDWARFDebugMap::~SymbolFileDWARFDebugMap() {}
void SymbolFileDWARFDebugMap::InitializeObject() {}
void SymbolFileDWARFDebugMap::InitOSO() {
if (m_flags.test(kHaveInitializedOSOs))
return;
m_flags.set(kHaveInitializedOSOs);
// If the object file has been stripped, there is no sense in looking further
// as all of the debug symbols for the debug map will not be available
if (m_objfile_sp->IsStripped())
return;
// Also make sure the file type is some sort of executable. Core files, debug
// info files (dSYM), object files (.o files), and stub libraries all can
switch (m_objfile_sp->GetType()) {
case ObjectFile::eTypeInvalid:
case ObjectFile::eTypeCoreFile:
case ObjectFile::eTypeDebugInfo:
case ObjectFile::eTypeObjectFile:
case ObjectFile::eTypeStubLibrary:
case ObjectFile::eTypeUnknown:
case ObjectFile::eTypeJIT:
return;
case ObjectFile::eTypeExecutable:
case ObjectFile::eTypeDynamicLinker:
case ObjectFile::eTypeSharedLibrary:
break;
}
// In order to get the abilities of this plug-in, we look at the list of
// N_OSO entries (object files) from the symbol table and make sure that
// these files exist and also contain valid DWARF. If we get any of that then
// we return the abilities of the first N_OSO's DWARF.
Symtab *symtab = m_objfile_sp->GetSymtab();
if (symtab) {
Log *log(LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_MAP));
std::vector<uint32_t> oso_indexes;
// When a mach-o symbol is encoded, the n_type field is encoded in bits
// 23:16, and the n_desc field is encoded in bits 15:0.
//
// To find all N_OSO entries that are part of the DWARF + debug map we find
// only object file symbols with the flags value as follows: bits 23:16 ==
// 0x66 (N_OSO) bits 15: 0 == 0x0001 (specifies this is a debug map object
// file)
const uint32_t k_oso_symbol_flags_value = 0x660001u;
const uint32_t oso_index_count =
symtab->AppendSymbolIndexesWithTypeAndFlagsValue(
eSymbolTypeObjectFile, k_oso_symbol_flags_value, oso_indexes);
if (oso_index_count > 0) {
symtab->AppendSymbolIndexesWithType(eSymbolTypeCode, Symtab::eDebugYes,
Symtab::eVisibilityAny,
m_func_indexes);
symtab->AppendSymbolIndexesWithType(eSymbolTypeData, Symtab::eDebugYes,
Symtab::eVisibilityAny,
m_glob_indexes);
symtab->SortSymbolIndexesByValue(m_func_indexes, true);
symtab->SortSymbolIndexesByValue(m_glob_indexes, true);
for (uint32_t sym_idx : m_func_indexes) {
const Symbol *symbol = symtab->SymbolAtIndex(sym_idx);
lldb::addr_t file_addr = symbol->GetAddressRef().GetFileAddress();
lldb::addr_t byte_size = symbol->GetByteSize();
DebugMap::Entry debug_map_entry(
file_addr, byte_size, OSOEntry(sym_idx, LLDB_INVALID_ADDRESS));
m_debug_map.Append(debug_map_entry);
}
for (uint32_t sym_idx : m_glob_indexes) {
const Symbol *symbol = symtab->SymbolAtIndex(sym_idx);
lldb::addr_t file_addr = symbol->GetAddressRef().GetFileAddress();
lldb::addr_t byte_size = symbol->GetByteSize();
DebugMap::Entry debug_map_entry(
file_addr, byte_size, OSOEntry(sym_idx, LLDB_INVALID_ADDRESS));
m_debug_map.Append(debug_map_entry);
}
m_debug_map.Sort();
m_compile_unit_infos.resize(oso_index_count);
for (uint32_t i = 0; i < oso_index_count; ++i) {
const uint32_t so_idx = oso_indexes[i] - 1;
const uint32_t oso_idx = oso_indexes[i];
const Symbol *so_symbol = symtab->SymbolAtIndex(so_idx);
const Symbol *oso_symbol = symtab->SymbolAtIndex(oso_idx);
if (so_symbol && oso_symbol &&
so_symbol->GetType() == eSymbolTypeSourceFile &&
oso_symbol->GetType() == eSymbolTypeObjectFile) {
m_compile_unit_infos[i].so_file.SetFile(
so_symbol->GetName().AsCString(), FileSpec::Style::native);
m_compile_unit_infos[i].oso_path = oso_symbol->GetName();
m_compile_unit_infos[i].oso_mod_time =
llvm::sys::toTimePoint(oso_symbol->GetIntegerValue(0));
uint32_t sibling_idx = so_symbol->GetSiblingIndex();
// The sibling index can't be less that or equal to the current index
// "i"
if (sibling_idx == UINT32_MAX) {
m_objfile_sp->GetModule()->ReportError(
"N_SO in symbol with UID %u has invalid sibling in debug map, "
"please file a bug and attach the binary listed in this error",
so_symbol->GetID());
} else {
const Symbol *last_symbol = symtab->SymbolAtIndex(sibling_idx - 1);
m_compile_unit_infos[i].first_symbol_index = so_idx;
m_compile_unit_infos[i].last_symbol_index = sibling_idx - 1;
m_compile_unit_infos[i].first_symbol_id = so_symbol->GetID();
m_compile_unit_infos[i].last_symbol_id = last_symbol->GetID();
LLDB_LOGF(log, "Initialized OSO 0x%8.8x: file=%s", i,
oso_symbol->GetName().GetCString());
}
} else {
if (oso_symbol == nullptr)
m_objfile_sp->GetModule()->ReportError(
"N_OSO symbol[%u] can't be found, please file a bug and attach "
"the binary listed in this error",
oso_idx);
else if (so_symbol == nullptr)
m_objfile_sp->GetModule()->ReportError(
"N_SO not found for N_OSO symbol[%u], please file a bug and "
"attach the binary listed in this error",
oso_idx);
else if (so_symbol->GetType() != eSymbolTypeSourceFile)
m_objfile_sp->GetModule()->ReportError(
"N_SO has incorrect symbol type (%u) for N_OSO symbol[%u], "
"please file a bug and attach the binary listed in this error",
so_symbol->GetType(), oso_idx);
else if (oso_symbol->GetType() != eSymbolTypeSourceFile)
m_objfile_sp->GetModule()->ReportError(
"N_OSO has incorrect symbol type (%u) for N_OSO symbol[%u], "
"please file a bug and attach the binary listed in this error",
oso_symbol->GetType(), oso_idx);
}
}
}
}
}
Module *SymbolFileDWARFDebugMap::GetModuleByOSOIndex(uint32_t oso_idx) {
const uint32_t cu_count = GetNumCompileUnits();
if (oso_idx < cu_count)
return GetModuleByCompUnitInfo(&m_compile_unit_infos[oso_idx]);
return nullptr;
}
Module *SymbolFileDWARFDebugMap::GetModuleByCompUnitInfo(
CompileUnitInfo *comp_unit_info) {
if (!comp_unit_info->oso_sp) {
auto pos = m_oso_map.find(
{comp_unit_info->oso_path, comp_unit_info->oso_mod_time});
if (pos != m_oso_map.end()) {
comp_unit_info->oso_sp = pos->second;
} else {
ObjectFile *obj_file = GetObjectFile();
comp_unit_info->oso_sp = std::make_shared<OSOInfo>();
m_oso_map[{comp_unit_info->oso_path, comp_unit_info->oso_mod_time}] =
comp_unit_info->oso_sp;
const char *oso_path = comp_unit_info->oso_path.GetCString();
FileSpec oso_file(oso_path);
ConstString oso_object;
if (FileSystem::Instance().Exists(oso_file)) {
FileSystem::Instance().Collect(oso_file);
// The modification time returned by the FS can have a higher precision
// than the one from the CU.
auto oso_mod_time = std::chrono::time_point_cast<std::chrono::seconds>(
FileSystem::Instance().GetModificationTime(oso_file));
// A timestamp of 0 means that the linker was in deterministic mode. In
// that case, we should skip the check against the filesystem last
// modification timestamp, since it will never match.
if (comp_unit_info->oso_mod_time != llvm::sys::TimePoint<>() &&
oso_mod_time != comp_unit_info->oso_mod_time) {
obj_file->GetModule()->ReportError(
"debug map object file '%s' has changed (actual time is "
"%s, debug map time is %s"
") since this executable was linked, file will be ignored",
oso_file.GetPath().c_str(), llvm::to_string(oso_mod_time).c_str(),
llvm::to_string(comp_unit_info->oso_mod_time).c_str());
return nullptr;
}
} else {
const bool must_exist = true;
if (!ObjectFile::SplitArchivePathWithObject(oso_path, oso_file,
oso_object, must_exist)) {
return nullptr;
}
}
// Always create a new module for .o files. Why? Because we use the debug
// map, to add new sections to each .o file and even though a .o file
// might not have changed, the sections that get added to the .o file can
// change.
ArchSpec oso_arch;
// Only adopt the architecture from the module (not the vendor or OS)
// since .o files for "i386-apple-ios" will historically show up as "i386
// -apple-macosx" due to the lack of a LC_VERSION_MIN_MACOSX or
// LC_VERSION_MIN_IPHONEOS load command...
oso_arch.SetTriple(m_objfile_sp->GetModule()
->GetArchitecture()
.GetTriple()
.getArchName()
.str()
.c_str());
comp_unit_info->oso_sp->module_sp = std::make_shared<DebugMapModule>(
obj_file->GetModule(), GetCompUnitInfoIndex(comp_unit_info), oso_file,
oso_arch, oso_object ? &oso_object : nullptr, 0,
oso_object ? comp_unit_info->oso_mod_time : llvm::sys::TimePoint<>());
}
}
if (comp_unit_info->oso_sp)
return comp_unit_info->oso_sp->module_sp.get();
return nullptr;
}
bool SymbolFileDWARFDebugMap::GetFileSpecForSO(uint32_t oso_idx,
FileSpec &file_spec) {
if (oso_idx < m_compile_unit_infos.size()) {
if (m_compile_unit_infos[oso_idx].so_file) {
file_spec = m_compile_unit_infos[oso_idx].so_file;
return true;
}
}
return false;
}
ObjectFile *SymbolFileDWARFDebugMap::GetObjectFileByOSOIndex(uint32_t oso_idx) {
Module *oso_module = GetModuleByOSOIndex(oso_idx);
if (oso_module)
return oso_module->GetObjectFile();
return nullptr;
}
SymbolFileDWARF *
SymbolFileDWARFDebugMap::GetSymbolFile(const SymbolContext &sc) {
return GetSymbolFile(*sc.comp_unit);
}
SymbolFileDWARF *
SymbolFileDWARFDebugMap::GetSymbolFile(const CompileUnit &comp_unit) {
CompileUnitInfo *comp_unit_info = GetCompUnitInfo(comp_unit);
if (comp_unit_info)
return GetSymbolFileByCompUnitInfo(comp_unit_info);
return nullptr;
}
ObjectFile *SymbolFileDWARFDebugMap::GetObjectFileByCompUnitInfo(
CompileUnitInfo *comp_unit_info) {
Module *oso_module = GetModuleByCompUnitInfo(comp_unit_info);
if (oso_module)
return oso_module->GetObjectFile();
return nullptr;
}
uint32_t SymbolFileDWARFDebugMap::GetCompUnitInfoIndex(
const CompileUnitInfo *comp_unit_info) {
if (!m_compile_unit_infos.empty()) {
const CompileUnitInfo *first_comp_unit_info = &m_compile_unit_infos.front();
const CompileUnitInfo *last_comp_unit_info = &m_compile_unit_infos.back();
if (first_comp_unit_info <= comp_unit_info &&
comp_unit_info <= last_comp_unit_info)
return comp_unit_info - first_comp_unit_info;
}
return UINT32_MAX;
}
SymbolFileDWARF *
SymbolFileDWARFDebugMap::GetSymbolFileByOSOIndex(uint32_t oso_idx) {
unsigned size = m_compile_unit_infos.size();
if (oso_idx < size)
return GetSymbolFileByCompUnitInfo(&m_compile_unit_infos[oso_idx]);
return nullptr;
}
SymbolFileDWARF *
SymbolFileDWARFDebugMap::GetSymbolFileAsSymbolFileDWARF(SymbolFile *sym_file) {
if (sym_file &&
sym_file->GetPluginName() == SymbolFileDWARF::GetPluginNameStatic())
return static_cast<SymbolFileDWARF *>(sym_file);
return nullptr;
}
SymbolFileDWARF *SymbolFileDWARFDebugMap::GetSymbolFileByCompUnitInfo(
CompileUnitInfo *comp_unit_info) {
if (Module *oso_module = GetModuleByCompUnitInfo(comp_unit_info))
return GetSymbolFileAsSymbolFileDWARF(oso_module->GetSymbolFile());
return nullptr;
}
uint32_t SymbolFileDWARFDebugMap::CalculateAbilities() {
// In order to get the abilities of this plug-in, we look at the list of
// N_OSO entries (object files) from the symbol table and make sure that
// these files exist and also contain valid DWARF. If we get any of that then
// we return the abilities of the first N_OSO's DWARF.
const uint32_t oso_index_count = GetNumCompileUnits();
if (oso_index_count > 0) {
InitOSO();
if (!m_compile_unit_infos.empty()) {
return SymbolFile::CompileUnits | SymbolFile::Functions |
SymbolFile::Blocks | SymbolFile::GlobalVariables |
SymbolFile::LocalVariables | SymbolFile::VariableTypes |
SymbolFile::LineTables;
}
}
return 0;
}
uint32_t SymbolFileDWARFDebugMap::CalculateNumCompileUnits() {
InitOSO();
return m_compile_unit_infos.size();
}
CompUnitSP SymbolFileDWARFDebugMap::ParseCompileUnitAtIndex(uint32_t cu_idx) {
CompUnitSP comp_unit_sp;
const uint32_t cu_count = GetNumCompileUnits();
if (cu_idx < cu_count) {
Module *oso_module = GetModuleByCompUnitInfo(&m_compile_unit_infos[cu_idx]);
if (oso_module) {
FileSpec so_file_spec;
if (GetFileSpecForSO(cu_idx, so_file_spec)) {
// User zero as the ID to match the compile unit at offset zero in each
// .o file since each .o file can only have one compile unit for now.
lldb::user_id_t cu_id = 0;
m_compile_unit_infos[cu_idx].compile_unit_sp =
std::make_shared<CompileUnit>(
m_objfile_sp->GetModule(), nullptr, so_file_spec, cu_id,
eLanguageTypeUnknown, eLazyBoolCalculate);
if (m_compile_unit_infos[cu_idx].compile_unit_sp) {
SetCompileUnitAtIndex(cu_idx,
m_compile_unit_infos[cu_idx].compile_unit_sp);
}
}
}
comp_unit_sp = m_compile_unit_infos[cu_idx].compile_unit_sp;
}
return comp_unit_sp;
}
SymbolFileDWARFDebugMap::CompileUnitInfo *
SymbolFileDWARFDebugMap::GetCompUnitInfo(const SymbolContext &sc) {
return GetCompUnitInfo(*sc.comp_unit);
}
SymbolFileDWARFDebugMap::CompileUnitInfo *
SymbolFileDWARFDebugMap::GetCompUnitInfo(const CompileUnit &comp_unit) {
const uint32_t cu_count = GetNumCompileUnits();
for (uint32_t i = 0; i < cu_count; ++i) {
if (&comp_unit == m_compile_unit_infos[i].compile_unit_sp.get())
return &m_compile_unit_infos[i];
}
return nullptr;
}
size_t SymbolFileDWARFDebugMap::GetCompUnitInfosForModule(
const lldb_private::Module *module,
std::vector<CompileUnitInfo *> &cu_infos) {
const uint32_t cu_count = GetNumCompileUnits();
for (uint32_t i = 0; i < cu_count; ++i) {
if (module == GetModuleByCompUnitInfo(&m_compile_unit_infos[i]))
cu_infos.push_back(&m_compile_unit_infos[i]);
}
return cu_infos.size();
}
lldb::LanguageType
SymbolFileDWARFDebugMap::ParseLanguage(CompileUnit &comp_unit) {
std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
SymbolFileDWARF *oso_dwarf = GetSymbolFile(comp_unit);
if (oso_dwarf)
return oso_dwarf->ParseLanguage(comp_unit);
return eLanguageTypeUnknown;
}
XcodeSDK SymbolFileDWARFDebugMap::ParseXcodeSDK(CompileUnit &comp_unit) {
std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
SymbolFileDWARF *oso_dwarf = GetSymbolFile(comp_unit);
if (oso_dwarf)
return oso_dwarf->ParseXcodeSDK(comp_unit);
return {};
}
size_t SymbolFileDWARFDebugMap::ParseFunctions(CompileUnit &comp_unit) {
std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
SymbolFileDWARF *oso_dwarf = GetSymbolFile(comp_unit);
if (oso_dwarf)
return oso_dwarf->ParseFunctions(comp_unit);
return 0;
}
bool SymbolFileDWARFDebugMap::ParseLineTable(CompileUnit &comp_unit) {
std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
SymbolFileDWARF *oso_dwarf = GetSymbolFile(comp_unit);
if (oso_dwarf)
return oso_dwarf->ParseLineTable(comp_unit);
return false;
}
bool SymbolFileDWARFDebugMap::ParseDebugMacros(CompileUnit &comp_unit) {
std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
SymbolFileDWARF *oso_dwarf = GetSymbolFile(comp_unit);
if (oso_dwarf)
return oso_dwarf->ParseDebugMacros(comp_unit);
return false;
}
bool SymbolFileDWARFDebugMap::ForEachExternalModule(
CompileUnit &comp_unit,
llvm::DenseSet<lldb_private::SymbolFile *> &visited_symbol_files,
llvm::function_ref<bool(Module &)> f) {
std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
SymbolFileDWARF *oso_dwarf = GetSymbolFile(comp_unit);
if (oso_dwarf)
return oso_dwarf->ForEachExternalModule(comp_unit, visited_symbol_files, f);
return false;
}
bool SymbolFileDWARFDebugMap::ParseSupportFiles(CompileUnit &comp_unit,
FileSpecList &support_files) {
std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
SymbolFileDWARF *oso_dwarf = GetSymbolFile(comp_unit);
if (oso_dwarf)
return oso_dwarf->ParseSupportFiles(comp_unit, support_files);
return false;
}
bool SymbolFileDWARFDebugMap::ParseIsOptimized(CompileUnit &comp_unit) {
std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
SymbolFileDWARF *oso_dwarf = GetSymbolFile(comp_unit);
if (oso_dwarf)
return oso_dwarf->ParseIsOptimized(comp_unit);
return false;
}
bool SymbolFileDWARFDebugMap::ParseImportedModules(
const SymbolContext &sc, std::vector<SourceModule> &imported_modules) {
std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
SymbolFileDWARF *oso_dwarf = GetSymbolFile(sc);
if (oso_dwarf)
return oso_dwarf->ParseImportedModules(sc, imported_modules);
return false;
}
size_t SymbolFileDWARFDebugMap::ParseBlocksRecursive(Function &func) {
std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
CompileUnit *comp_unit = func.GetCompileUnit();
if (!comp_unit)
return 0;
SymbolFileDWARF *oso_dwarf = GetSymbolFile(*comp_unit);
if (oso_dwarf)
return oso_dwarf->ParseBlocksRecursive(func);
return 0;
}
size_t SymbolFileDWARFDebugMap::ParseTypes(CompileUnit &comp_unit) {
std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
SymbolFileDWARF *oso_dwarf = GetSymbolFile(comp_unit);
if (oso_dwarf)
return oso_dwarf->ParseTypes(comp_unit);
return 0;
}
size_t
SymbolFileDWARFDebugMap::ParseVariablesForContext(const SymbolContext &sc) {
std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
SymbolFileDWARF *oso_dwarf = GetSymbolFile(sc);
if (oso_dwarf)
return oso_dwarf->ParseVariablesForContext(sc);
return 0;
}
Type *SymbolFileDWARFDebugMap::ResolveTypeUID(lldb::user_id_t type_uid) {
std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
const uint64_t oso_idx = GetOSOIndexFromUserID(type_uid);
SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex(oso_idx);
if (oso_dwarf)
return oso_dwarf->ResolveTypeUID(type_uid);
return nullptr;
}
llvm::Optional<SymbolFile::ArrayInfo>
SymbolFileDWARFDebugMap::GetDynamicArrayInfoForUID(
lldb::user_id_t type_uid, const lldb_private::ExecutionContext *exe_ctx) {
const uint64_t oso_idx = GetOSOIndexFromUserID(type_uid);
SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex(oso_idx);
if (oso_dwarf)
return oso_dwarf->GetDynamicArrayInfoForUID(type_uid, exe_ctx);
return llvm::None;
}
bool SymbolFileDWARFDebugMap::CompleteType(CompilerType &compiler_type) {
bool success = false;
if (compiler_type) {
ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool {
if (oso_dwarf->HasForwardDeclForClangType(compiler_type)) {
oso_dwarf->CompleteType(compiler_type);
success = true;
return true;
}
return false;
});
}
return success;
}
uint32_t
SymbolFileDWARFDebugMap::ResolveSymbolContext(const Address &exe_so_addr,
SymbolContextItem resolve_scope,
SymbolContext &sc) {
std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
uint32_t resolved_flags = 0;
Symtab *symtab = m_objfile_sp->GetSymtab();
if (symtab) {
const addr_t exe_file_addr = exe_so_addr.GetFileAddress();
const DebugMap::Entry *debug_map_entry =
m_debug_map.FindEntryThatContains(exe_file_addr);
if (debug_map_entry) {
sc.symbol =
symtab->SymbolAtIndex(debug_map_entry->data.GetExeSymbolIndex());
if (sc.symbol != nullptr) {
resolved_flags |= eSymbolContextSymbol;
uint32_t oso_idx = 0;
CompileUnitInfo *comp_unit_info =
GetCompileUnitInfoForSymbolWithID(sc.symbol->GetID(), &oso_idx);
if (comp_unit_info) {
comp_unit_info->GetFileRangeMap(this);
Module *oso_module = GetModuleByCompUnitInfo(comp_unit_info);
if (oso_module) {
lldb::addr_t oso_file_addr =
exe_file_addr - debug_map_entry->GetRangeBase() +
debug_map_entry->data.GetOSOFileAddress();
Address oso_so_addr;
if (oso_module->ResolveFileAddress(oso_file_addr, oso_so_addr)) {
resolved_flags |=
oso_module->GetSymbolFile()->ResolveSymbolContext(
oso_so_addr, resolve_scope, sc);
}
}
}
}
}
}
return resolved_flags;
}
uint32_t SymbolFileDWARFDebugMap::ResolveSymbolContext(
const FileSpec &file_spec, uint32_t line, bool check_inlines,
SymbolContextItem resolve_scope, SymbolContextList &sc_list) {
std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
const uint32_t initial = sc_list.GetSize();
const uint32_t cu_count = GetNumCompileUnits();
for (uint32_t i = 0; i < cu_count; ++i) {
// If we are checking for inlines, then we need to look through all compile
// units no matter if "file_spec" matches.
bool resolve = check_inlines;
if (!resolve) {
FileSpec so_file_spec;
if (GetFileSpecForSO(i, so_file_spec))
resolve = FileSpec::Match(file_spec, so_file_spec);
}
if (resolve) {
SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex(i);
if (oso_dwarf)
oso_dwarf->ResolveSymbolContext(file_spec, line, check_inlines,
resolve_scope, sc_list);
}
}
return sc_list.GetSize() - initial;
}
void SymbolFileDWARFDebugMap::PrivateFindGlobalVariables(
ConstString name, const CompilerDeclContext &parent_decl_ctx,
const std::vector<uint32_t>
&indexes, // Indexes into the symbol table that match "name"
uint32_t max_matches, VariableList &variables) {
const size_t match_count = indexes.size();
for (size_t i = 0; i < match_count; ++i) {
uint32_t oso_idx;
CompileUnitInfo *comp_unit_info =
GetCompileUnitInfoForSymbolWithIndex(indexes[i], &oso_idx);
if (comp_unit_info) {
SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex(oso_idx);
if (oso_dwarf) {
oso_dwarf->FindGlobalVariables(name, parent_decl_ctx, max_matches,
variables);
if (variables.GetSize() > max_matches)
break;
}
}
}
}
void SymbolFileDWARFDebugMap::FindGlobalVariables(
ConstString name, const CompilerDeclContext &parent_decl_ctx,
uint32_t max_matches, VariableList &variables) {
std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
uint32_t total_matches = 0;
ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool {
const uint32_t old_size = variables.GetSize();
oso_dwarf->FindGlobalVariables(name, parent_decl_ctx, max_matches,
variables);
const uint32_t oso_matches = variables.GetSize() - old_size;
if (oso_matches > 0) {
total_matches += oso_matches;
// Are we getting all matches?
if (max_matches == UINT32_MAX)
return false; // Yep, continue getting everything
// If we have found enough matches, lets get out
if (max_matches >= total_matches)
return true;
// Update the max matches for any subsequent calls to find globals in any
// other object files with DWARF
max_matches -= oso_matches;
}
return false;
});
}
void SymbolFileDWARFDebugMap::FindGlobalVariables(
const RegularExpression &regex, uint32_t max_matches,
VariableList &variables) {
std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
uint32_t total_matches = 0;
ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool {
const uint32_t old_size = variables.GetSize();
oso_dwarf->FindGlobalVariables(regex, max_matches, variables);
const uint32_t oso_matches = variables.GetSize() - old_size;
if (oso_matches > 0) {
total_matches += oso_matches;
// Are we getting all matches?
if (max_matches == UINT32_MAX)
return false; // Yep, continue getting everything
// If we have found enough matches, lets get out
if (max_matches >= total_matches)
return true;
// Update the max matches for any subsequent calls to find globals in any
// other object files with DWARF
max_matches -= oso_matches;
}
return false;
});
}
int SymbolFileDWARFDebugMap::SymbolContainsSymbolWithIndex(
uint32_t *symbol_idx_ptr, const CompileUnitInfo *comp_unit_info) {
const uint32_t symbol_idx = *symbol_idx_ptr;
if (symbol_idx < comp_unit_info->first_symbol_index)
return -1;
if (symbol_idx <= comp_unit_info->last_symbol_index)
return 0;
return 1;
}
int SymbolFileDWARFDebugMap::SymbolContainsSymbolWithID(
user_id_t *symbol_idx_ptr, const CompileUnitInfo *comp_unit_info) {
const user_id_t symbol_id = *symbol_idx_ptr;
if (symbol_id < comp_unit_info->first_symbol_id)
return -1;
if (symbol_id <= comp_unit_info->last_symbol_id)
return 0;
return 1;
}
SymbolFileDWARFDebugMap::CompileUnitInfo *
SymbolFileDWARFDebugMap::GetCompileUnitInfoForSymbolWithIndex(
uint32_t symbol_idx, uint32_t *oso_idx_ptr) {
const uint32_t oso_index_count = m_compile_unit_infos.size();
CompileUnitInfo *comp_unit_info = nullptr;
if (oso_index_count) {
comp_unit_info = (CompileUnitInfo *)bsearch(
&symbol_idx, &m_compile_unit_infos[0], m_compile_unit_infos.size(),
sizeof(CompileUnitInfo),
(ComparisonFunction)SymbolContainsSymbolWithIndex);
}
if (oso_idx_ptr) {
if (comp_unit_info != nullptr)
*oso_idx_ptr = comp_unit_info - &m_compile_unit_infos[0];
else
*oso_idx_ptr = UINT32_MAX;
}
return comp_unit_info;
}
SymbolFileDWARFDebugMap::CompileUnitInfo *
SymbolFileDWARFDebugMap::GetCompileUnitInfoForSymbolWithID(
user_id_t symbol_id, uint32_t *oso_idx_ptr) {
const uint32_t oso_index_count = m_compile_unit_infos.size();
CompileUnitInfo *comp_unit_info = nullptr;
if (oso_index_count) {
comp_unit_info = (CompileUnitInfo *)::bsearch(
&symbol_id, &m_compile_unit_infos[0], m_compile_unit_infos.size(),
sizeof(CompileUnitInfo),
(ComparisonFunction)SymbolContainsSymbolWithID);
}
if (oso_idx_ptr) {
if (comp_unit_info != nullptr)
*oso_idx_ptr = comp_unit_info - &m_compile_unit_infos[0];
else
*oso_idx_ptr = UINT32_MAX;
}
return comp_unit_info;
}
static void RemoveFunctionsWithModuleNotEqualTo(const ModuleSP &module_sp,
SymbolContextList &sc_list,
uint32_t start_idx) {
// We found functions in .o files. Not all functions in the .o files will
// have made it into the final output file. The ones that did make it into
// the final output file will have a section whose module matches the module
// from the ObjectFile for this SymbolFile. When the modules don't match,
// then we have something that was in a .o file, but doesn't map to anything
// in the final executable.
uint32_t i = start_idx;
while (i < sc_list.GetSize()) {
SymbolContext sc;
sc_list.GetContextAtIndex(i, sc);
if (sc.function) {
const SectionSP section_sp(
sc.function->GetAddressRange().GetBaseAddress().GetSection());
if (section_sp->GetModule() != module_sp) {
sc_list.RemoveContextAtIndex(i);
continue;
}
}
++i;
}
}
void SymbolFileDWARFDebugMap::FindFunctions(
ConstString name, const CompilerDeclContext &parent_decl_ctx,
FunctionNameType name_type_mask, bool include_inlines,
SymbolContextList &sc_list) {
std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
Timer scoped_timer(func_cat,
"SymbolFileDWARFDebugMap::FindFunctions (name = %s)",
name.GetCString());
ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool {
uint32_t sc_idx = sc_list.GetSize();
oso_dwarf->FindFunctions(name, parent_decl_ctx, name_type_mask,
include_inlines, sc_list);
if (!sc_list.IsEmpty()) {
RemoveFunctionsWithModuleNotEqualTo(m_objfile_sp->GetModule(), sc_list,
sc_idx);
}
return false;
});
}
void SymbolFileDWARFDebugMap::FindFunctions(const RegularExpression &regex,
bool include_inlines,
SymbolContextList &sc_list) {
std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
Timer scoped_timer(func_cat,
"SymbolFileDWARFDebugMap::FindFunctions (regex = '%s')",
regex.GetText().str().c_str());
ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool {
uint32_t sc_idx = sc_list.GetSize();
oso_dwarf->FindFunctions(regex, include_inlines, sc_list);
if (!sc_list.IsEmpty()) {
RemoveFunctionsWithModuleNotEqualTo(m_objfile_sp->GetModule(), sc_list,
sc_idx);
}
return false;
});
}
void SymbolFileDWARFDebugMap::GetTypes(SymbolContextScope *sc_scope,
lldb::TypeClass type_mask,
TypeList &type_list) {
std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
Timer scoped_timer(func_cat,
"SymbolFileDWARFDebugMap::GetTypes (type_mask = 0x%8.8x)",
type_mask);
SymbolFileDWARF *oso_dwarf = nullptr;
if (sc_scope) {
SymbolContext sc;
sc_scope->CalculateSymbolContext(&sc);
CompileUnitInfo *cu_info = GetCompUnitInfo(sc);
if (cu_info) {
oso_dwarf = GetSymbolFileByCompUnitInfo(cu_info);
if (oso_dwarf)
oso_dwarf->GetTypes(sc_scope, type_mask, type_list);
}
} else {
ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool {
oso_dwarf->GetTypes(sc_scope, type_mask, type_list);
return false;
});
}
}
std::vector<std::unique_ptr<lldb_private::CallEdge>>
SymbolFileDWARFDebugMap::ParseCallEdgesInFunction(UserID func_id) {
uint32_t oso_idx = GetOSOIndexFromUserID(func_id.GetID());
SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex(oso_idx);
if (oso_dwarf)
return oso_dwarf->ParseCallEdgesInFunction(func_id);
return {};
}
TypeSP SymbolFileDWARFDebugMap::FindDefinitionTypeForDWARFDeclContext(
const DWARFDeclContext &die_decl_ctx) {
TypeSP type_sp;
ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool {
type_sp = oso_dwarf->FindDefinitionTypeForDWARFDeclContext(die_decl_ctx);
return ((bool)type_sp);
});
return type_sp;
}
bool SymbolFileDWARFDebugMap::Supports_DW_AT_APPLE_objc_complete_type(
SymbolFileDWARF *skip_dwarf_oso) {
if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolCalculate) {
m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolNo;
ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool {
if (skip_dwarf_oso != oso_dwarf &&
oso_dwarf->Supports_DW_AT_APPLE_objc_complete_type(nullptr)) {
m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes;
return true;
}
return false;
});
}
return m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolYes;
}
TypeSP SymbolFileDWARFDebugMap::FindCompleteObjCDefinitionTypeForDIE(
const DWARFDIE &die, ConstString type_name,
bool must_be_implementation) {
// If we have a debug map, we will have an Objective-C symbol whose name is
// the type name and whose type is eSymbolTypeObjCClass. If we can find that
// symbol and find its containing parent, we can locate the .o file that will
// contain the implementation definition since it will be scoped inside the
// N_SO and we can then locate the SymbolFileDWARF that corresponds to that
// N_SO.
SymbolFileDWARF *oso_dwarf = nullptr;
TypeSP type_sp;
ObjectFile *module_objfile = m_objfile_sp->GetModule()->GetObjectFile();
if (module_objfile) {
Symtab *symtab = module_objfile->GetSymtab();
if (symtab) {
Symbol *objc_class_symbol = symtab->FindFirstSymbolWithNameAndType(
type_name, eSymbolTypeObjCClass, Symtab::eDebugAny,
Symtab::eVisibilityAny);
if (objc_class_symbol) {
// Get the N_SO symbol that contains the objective C class symbol as
// this should be the .o file that contains the real definition...
const Symbol *source_file_symbol = symtab->GetParent(objc_class_symbol);
if (source_file_symbol &&
source_file_symbol->GetType() == eSymbolTypeSourceFile) {
const uint32_t source_file_symbol_idx =
symtab->GetIndexForSymbol(source_file_symbol);
if (source_file_symbol_idx != UINT32_MAX) {
CompileUnitInfo *compile_unit_info =
GetCompileUnitInfoForSymbolWithIndex(source_file_symbol_idx,
nullptr);
if (compile_unit_info) {
oso_dwarf = GetSymbolFileByCompUnitInfo(compile_unit_info);
if (oso_dwarf) {
TypeSP type_sp(oso_dwarf->FindCompleteObjCDefinitionTypeForDIE(
die, type_name, must_be_implementation));
if (type_sp) {
return type_sp;
}
}
}
}
}
}
}
}
// Only search all .o files for the definition if we don't need the
// implementation because otherwise, with a valid debug map we should have
// the ObjC class symbol and the code above should have found it.
if (!must_be_implementation) {
TypeSP type_sp;
ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool {
type_sp = oso_dwarf->FindCompleteObjCDefinitionTypeForDIE(
die, type_name, must_be_implementation);
return (bool)type_sp;
});
return type_sp;
}
return TypeSP();
}
void SymbolFileDWARFDebugMap::FindTypes(
ConstString name, const CompilerDeclContext &parent_decl_ctx,
uint32_t max_matches,
llvm::DenseSet<lldb_private::SymbolFile *> &searched_symbol_files,
TypeMap &types) {
std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool {
oso_dwarf->FindTypes(name, parent_decl_ctx, max_matches,
searched_symbol_files, types);
return types.GetSize() >= max_matches;
});
}
void SymbolFileDWARFDebugMap::FindTypes(
llvm::ArrayRef<CompilerContext> context, LanguageSet languages,
llvm::DenseSet<lldb_private::SymbolFile *> &searched_symbol_files,
TypeMap &types) {
ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool {
oso_dwarf->FindTypes(context, languages, searched_symbol_files, types);
return false;
});
}
//
// uint32_t
// SymbolFileDWARFDebugMap::FindTypes (const SymbolContext& sc, const
// RegularExpression& regex, bool append, uint32_t max_matches, Type::Encoding
// encoding, lldb::user_id_t udt_uid, TypeList& types)
//{
// SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc);
// if (oso_dwarf)
// return oso_dwarf->FindTypes (sc, regex, append, max_matches, encoding,
// udt_uid, types);
// return 0;
//}
CompilerDeclContext SymbolFileDWARFDebugMap::FindNamespace(
lldb_private::ConstString name,
const CompilerDeclContext &parent_decl_ctx) {
std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
CompilerDeclContext matching_namespace;
ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool {
matching_namespace = oso_dwarf->FindNamespace(name, parent_decl_ctx);
return (bool)matching_namespace;
});
return matching_namespace;
}
void SymbolFileDWARFDebugMap::DumpClangAST(Stream &s) {
ForEachSymbolFile([&s](SymbolFileDWARF *oso_dwarf) -> bool {
oso_dwarf->DumpClangAST(s);
// The underlying assumption is that DumpClangAST(...) will obtain the
// AST from the underlying TypeSystem and therefore we only need to do
// this once and can stop after the first iteration hence we return true.
return true;
});
}
// PluginInterface protocol
lldb_private::ConstString SymbolFileDWARFDebugMap::GetPluginName() {
return GetPluginNameStatic();
}
uint32_t SymbolFileDWARFDebugMap::GetPluginVersion() { return 1; }
lldb::CompUnitSP
SymbolFileDWARFDebugMap::GetCompileUnit(SymbolFileDWARF *oso_dwarf) {
if (oso_dwarf) {
const uint32_t cu_count = GetNumCompileUnits();
for (uint32_t cu_idx = 0; cu_idx < cu_count; ++cu_idx) {
SymbolFileDWARF *oso_symfile =
GetSymbolFileByCompUnitInfo(&m_compile_unit_infos[cu_idx]);
if (oso_symfile == oso_dwarf) {
if (!m_compile_unit_infos[cu_idx].compile_unit_sp)
m_compile_unit_infos[cu_idx].compile_unit_sp =
ParseCompileUnitAtIndex(cu_idx);
return m_compile_unit_infos[cu_idx].compile_unit_sp;
}
}
}
llvm_unreachable("this shouldn't happen");
}
SymbolFileDWARFDebugMap::CompileUnitInfo *
SymbolFileDWARFDebugMap::GetCompileUnitInfo(SymbolFileDWARF *oso_dwarf) {
if (oso_dwarf) {
const uint32_t cu_count = GetNumCompileUnits();
for (uint32_t cu_idx = 0; cu_idx < cu_count; ++cu_idx) {
SymbolFileDWARF *oso_symfile =
GetSymbolFileByCompUnitInfo(&m_compile_unit_infos[cu_idx]);
if (oso_symfile == oso_dwarf) {
return &m_compile_unit_infos[cu_idx];
}
}
}
return nullptr;
}
void SymbolFileDWARFDebugMap::SetCompileUnit(SymbolFileDWARF *oso_dwarf,
const CompUnitSP &cu_sp) {
if (oso_dwarf) {
const uint32_t cu_count = GetNumCompileUnits();
for (uint32_t cu_idx = 0; cu_idx < cu_count; ++cu_idx) {
SymbolFileDWARF *oso_symfile =
GetSymbolFileByCompUnitInfo(&m_compile_unit_infos[cu_idx]);
if (oso_symfile == oso_dwarf) {
if (m_compile_unit_infos[cu_idx].compile_unit_sp) {
assert(m_compile_unit_infos[cu_idx].compile_unit_sp.get() ==
cu_sp.get());
} else {
m_compile_unit_infos[cu_idx].compile_unit_sp = cu_sp;
SetCompileUnitAtIndex(cu_idx, cu_sp);
}
}
}
}
}
CompilerDeclContext
SymbolFileDWARFDebugMap::GetDeclContextForUID(lldb::user_id_t type_uid) {
const uint64_t oso_idx = GetOSOIndexFromUserID(type_uid);
SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex(oso_idx);
if (oso_dwarf)
return oso_dwarf->GetDeclContextForUID(type_uid);
return CompilerDeclContext();
}
CompilerDeclContext
SymbolFileDWARFDebugMap::GetDeclContextContainingUID(lldb::user_id_t type_uid) {
const uint64_t oso_idx = GetOSOIndexFromUserID(type_uid);
SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex(oso_idx);
if (oso_dwarf)
return oso_dwarf->GetDeclContextContainingUID(type_uid);
return CompilerDeclContext();
}
void SymbolFileDWARFDebugMap::ParseDeclsForContext(
lldb_private::CompilerDeclContext decl_ctx) {
ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool {
oso_dwarf->ParseDeclsForContext(decl_ctx);
return true; // Keep iterating
});
}
bool SymbolFileDWARFDebugMap::AddOSOFileRange(CompileUnitInfo *cu_info,
lldb::addr_t exe_file_addr,
lldb::addr_t exe_byte_size,
lldb::addr_t oso_file_addr,
lldb::addr_t oso_byte_size) {
const uint32_t debug_map_idx =
m_debug_map.FindEntryIndexThatContains(exe_file_addr);
if (debug_map_idx != UINT32_MAX) {
DebugMap::Entry *debug_map_entry =
m_debug_map.FindEntryThatContains(exe_file_addr);
debug_map_entry->data.SetOSOFileAddress(oso_file_addr);
addr_t range_size = std::min<addr_t>(exe_byte_size, oso_byte_size);
if (range_size == 0) {
range_size = std::max<addr_t>(exe_byte_size, oso_byte_size);
if (range_size == 0)
range_size = 1;
}
cu_info->file_range_map.Append(
FileRangeMap::Entry(oso_file_addr, range_size, exe_file_addr));
return true;
}
return false;
}
void SymbolFileDWARFDebugMap::FinalizeOSOFileRanges(CompileUnitInfo *cu_info) {
cu_info->file_range_map.Sort();
#if defined(DEBUG_OSO_DMAP)
const FileRangeMap &oso_file_range_map = cu_info->GetFileRangeMap(this);
const size_t n = oso_file_range_map.GetSize();
printf("SymbolFileDWARFDebugMap::FinalizeOSOFileRanges (cu_info = %p) %s\n",
cu_info, cu_info->oso_sp->module_sp->GetFileSpec().GetPath().c_str());
for (size_t i = 0; i < n; ++i) {
const FileRangeMap::Entry &entry = oso_file_range_map.GetEntryRef(i);
printf("oso [0x%16.16" PRIx64 " - 0x%16.16" PRIx64
") ==> exe [0x%16.16" PRIx64 " - 0x%16.16" PRIx64 ")\n",
entry.GetRangeBase(), entry.GetRangeEnd(), entry.data,
entry.data + entry.GetByteSize());
}
#endif
}
lldb::addr_t
SymbolFileDWARFDebugMap::LinkOSOFileAddress(SymbolFileDWARF *oso_symfile,
lldb::addr_t oso_file_addr) {
CompileUnitInfo *cu_info = GetCompileUnitInfo(oso_symfile);
if (cu_info) {
const FileRangeMap::Entry *oso_range_entry =
cu_info->GetFileRangeMap(this).FindEntryThatContains(oso_file_addr);
if (oso_range_entry) {
const DebugMap::Entry *debug_map_entry =
m_debug_map.FindEntryThatContains(oso_range_entry->data);
if (debug_map_entry) {
const lldb::addr_t offset =
oso_file_addr - oso_range_entry->GetRangeBase();
const lldb::addr_t exe_file_addr =
debug_map_entry->GetRangeBase() + offset;
return exe_file_addr;
}
}
}
return LLDB_INVALID_ADDRESS;
}
bool SymbolFileDWARFDebugMap::LinkOSOAddress(Address &addr) {
// Make sure this address hasn't been fixed already
Module *exe_module = GetObjectFile()->GetModule().get();
Module *addr_module = addr.GetModule().get();
if (addr_module == exe_module)
return true; // Address is already in terms of the main executable module
CompileUnitInfo *cu_info = GetCompileUnitInfo(
GetSymbolFileAsSymbolFileDWARF(addr_module->GetSymbolFile()));
if (cu_info) {
const lldb::addr_t oso_file_addr = addr.GetFileAddress();
const FileRangeMap::Entry *oso_range_entry =
cu_info->GetFileRangeMap(this).FindEntryThatContains(oso_file_addr);
if (oso_range_entry) {
const DebugMap::Entry *debug_map_entry =
m_debug_map.FindEntryThatContains(oso_range_entry->data);
if (debug_map_entry) {
const lldb::addr_t offset =
oso_file_addr - oso_range_entry->GetRangeBase();
const lldb::addr_t exe_file_addr =
debug_map_entry->GetRangeBase() + offset;
return exe_module->ResolveFileAddress(exe_file_addr, addr);
}
}
}
return true;
}
LineTable *SymbolFileDWARFDebugMap::LinkOSOLineTable(SymbolFileDWARF *oso_dwarf,
LineTable *line_table) {
CompileUnitInfo *cu_info = GetCompileUnitInfo(oso_dwarf);
if (cu_info)
return line_table->LinkLineTable(cu_info->GetFileRangeMap(this));
return nullptr;
}
size_t
SymbolFileDWARFDebugMap::AddOSOARanges(SymbolFileDWARF *dwarf2Data,
DWARFDebugAranges *debug_aranges) {
size_t num_line_entries_added = 0;
if (debug_aranges && dwarf2Data) {
CompileUnitInfo *compile_unit_info = GetCompileUnitInfo(dwarf2Data);
if (compile_unit_info) {
const FileRangeMap &file_range_map =
compile_unit_info->GetFileRangeMap(this);
for (size_t idx = 0; idx < file_range_map.GetSize(); idx++) {
const FileRangeMap::Entry *entry = file_range_map.GetEntryAtIndex(idx);
if (entry) {
debug_aranges->AppendRange(dwarf2Data->GetID(), entry->GetRangeBase(),
entry->GetRangeEnd());
num_line_entries_added++;
}
}
}
}
return num_line_entries_added;
}
Reference in new issue View Git Blame Copy Permalink