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llvm-project/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.cpp
Jonas Devlieghere 937348cd13 [FileSpec] Make style argument mandatory for SetFile. NFC 
SetFile has an optional style argument which defaulted to the native
style. This patch makes that argument mandatory so clients of the
FileSpec class are forced to think about the correct syntax.

At the same time this introduces a (protected) convenience method to
update the file from within the FileSpec class that keeps the current
style.

These two changes together prevent a potential pitfall where the style
might be forgotten, leading to the path being updated and the style
unintentionally being changed to the host style.

llvm-svn: 334663
2018-06-13 22:08:14 +00:00

1429 lines
52 KiB
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//===-- SymbolFileDWARFDebugMap.cpp -----------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "SymbolFileDWARFDebugMap.h"
#include "DWARFDebugAranges.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/ModuleList.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Core/RangeMap.h"
#include "lldb/Core/Section.h"
#include "lldb/Host/FileSystem.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"
using namespace lldb;
using namespace lldb_private;
// Subclass lldb_private::Module so we can intercept the
// "Module::GetObjectFile()" (so we can fixup the object file sections) and
// also for "Module::GetSymbolVendor()" (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));
if (log) {
ConstString object_name(oso_module->GetObjectName());
log->Printf(
"%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() == false)
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(lldb::eLanguageTypeUnknown,
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(lldb::eLanguageTypeUnknown,
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;
SymbolVendor *
GetSymbolVendor(bool can_create = true,
lldb_private::Stream *feedback_strm = NULL) override {
// Scope for locker
if (m_symfile_ap.get() || can_create == false)
return m_symfile_ap.get();
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);
SymbolVendor *symbol_vendor =
Module::GetSymbolVendor(can_create, feedback_strm);
if (symbol_vendor) {
// 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(
symbol_vendor->GetSymbolFile());
if (!oso_symfile)
return NULL;
ObjectFile *exe_objfile = exe_module_sp->GetObjectFile();
SymbolVendor *exe_sym_vendor = exe_module_sp->GetSymbolVendor();
if (exe_objfile && exe_sym_vendor) {
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 symbol_vendor;
}
}
}
return NULL;
}
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(ObjectFile *obj_file) {
return new SymbolFileDWARFDebugMap(obj_file);
}
SymbolFileDWARFDebugMap::SymbolFileDWARFDebugMap(ObjectFile *ofile)
: SymbolFile(ofile), 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_obj_file->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_obj_file->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_obj_file->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(), false, 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_obj_file->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();
if (log)
log->Printf("Initialized OSO 0x%8.8x: file=%s", i,
oso_symbol->GetName().GetCString());
}
} else {
if (oso_symbol == NULL)
m_obj_file->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 == NULL)
m_obj_file->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_obj_file->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_obj_file->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 NULL;
}
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.reset(new 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, false);
ConstString oso_object;
if (oso_file.Exists()) {
auto oso_mod_time = FileSystem::GetModificationTime(oso_file);
if (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 NULL;
}
} else {
const bool must_exist = true;
if (!ObjectFile::SplitArchivePathWithObject(oso_path, oso_file,
oso_object, must_exist)) {
return NULL;
}
}
// 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_obj_file->GetModule()
->GetArchitecture()
.GetTriple()
.getArchName()
.str()
.c_str());
comp_unit_info->oso_sp->module_sp.reset(new DebugMapModule(
obj_file->GetModule(), GetCompUnitInfoIndex(comp_unit_info), oso_file,
oso_arch, oso_object ? &oso_object : NULL, 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 NULL;
}
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 NULL;
}
SymbolFileDWARF *
SymbolFileDWARFDebugMap::GetSymbolFile(const SymbolContext &sc) {
CompileUnitInfo *comp_unit_info = GetCompUnitInfo(sc);
if (comp_unit_info)
return GetSymbolFileByCompUnitInfo(comp_unit_info);
return NULL;
}
ObjectFile *SymbolFileDWARFDebugMap::GetObjectFileByCompUnitInfo(
CompileUnitInfo *comp_unit_info) {
Module *oso_module = GetModuleByCompUnitInfo(comp_unit_info);
if (oso_module)
return oso_module->GetObjectFile();
return NULL;
}
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) {
if (oso_idx < m_compile_unit_infos.size())
return GetSymbolFileByCompUnitInfo(&m_compile_unit_infos[oso_idx]);
return NULL;
}
SymbolFileDWARF *
SymbolFileDWARFDebugMap::GetSymbolFileAsSymbolFileDWARF(SymbolFile *sym_file) {
if (sym_file &&
sym_file->GetPluginName() == SymbolFileDWARF::GetPluginNameStatic())
return (SymbolFileDWARF *)sym_file;
return NULL;
}
SymbolFileDWARF *SymbolFileDWARFDebugMap::GetSymbolFileByCompUnitInfo(
CompileUnitInfo *comp_unit_info) {
Module *oso_module = GetModuleByCompUnitInfo(comp_unit_info);
if (oso_module) {
SymbolVendor *sym_vendor = oso_module->GetSymbolVendor();
if (sym_vendor)
return GetSymbolFileAsSymbolFileDWARF(sym_vendor->GetSymbolFile());
}
return NULL;
}
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::GetNumCompileUnits() {
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.reset(
new CompileUnit(m_obj_file->GetModule(), NULL, so_file_spec, cu_id,
eLanguageTypeUnknown, eLazyBoolCalculate));
if (m_compile_unit_infos[cu_idx].compile_unit_sp) {
// Let our symbol vendor know about this compile unit
m_obj_file->GetModule()->GetSymbolVendor()->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) {
const uint32_t cu_count = GetNumCompileUnits();
for (uint32_t i = 0; i < cu_count; ++i) {
if (sc.comp_unit == m_compile_unit_infos[i].compile_unit_sp.get())
return &m_compile_unit_infos[i];
}
return NULL;
}
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::ParseCompileUnitLanguage(const SymbolContext &sc) {
SymbolFileDWARF *oso_dwarf = GetSymbolFile(sc);
if (oso_dwarf)
return oso_dwarf->ParseCompileUnitLanguage(sc);
return eLanguageTypeUnknown;
}
size_t
SymbolFileDWARFDebugMap::ParseCompileUnitFunctions(const SymbolContext &sc) {
SymbolFileDWARF *oso_dwarf = GetSymbolFile(sc);
if (oso_dwarf)
return oso_dwarf->ParseCompileUnitFunctions(sc);
return 0;
}
bool SymbolFileDWARFDebugMap::ParseCompileUnitLineTable(
const SymbolContext &sc) {
SymbolFileDWARF *oso_dwarf = GetSymbolFile(sc);
if (oso_dwarf)
return oso_dwarf->ParseCompileUnitLineTable(sc);
return false;
}
bool SymbolFileDWARFDebugMap::ParseCompileUnitDebugMacros(
const SymbolContext &sc) {
SymbolFileDWARF *oso_dwarf = GetSymbolFile(sc);
if (oso_dwarf)
return oso_dwarf->ParseCompileUnitDebugMacros(sc);
return false;
}
bool SymbolFileDWARFDebugMap::ParseCompileUnitSupportFiles(
const SymbolContext &sc, FileSpecList &support_files) {
SymbolFileDWARF *oso_dwarf = GetSymbolFile(sc);
if (oso_dwarf)
return oso_dwarf->ParseCompileUnitSupportFiles(sc, support_files);
return false;
}
bool SymbolFileDWARFDebugMap::ParseCompileUnitIsOptimized(
const lldb_private::SymbolContext &sc) {
SymbolFileDWARF *oso_dwarf = GetSymbolFile(sc);
if (oso_dwarf)
return oso_dwarf->ParseCompileUnitIsOptimized(sc);
return false;
}
bool SymbolFileDWARFDebugMap::ParseImportedModules(
const SymbolContext &sc, std::vector<ConstString> &imported_modules) {
SymbolFileDWARF *oso_dwarf = GetSymbolFile(sc);
if (oso_dwarf)
return oso_dwarf->ParseImportedModules(sc, imported_modules);
return false;
}
size_t SymbolFileDWARFDebugMap::ParseFunctionBlocks(const SymbolContext &sc) {
SymbolFileDWARF *oso_dwarf = GetSymbolFile(sc);
if (oso_dwarf)
return oso_dwarf->ParseFunctionBlocks(sc);
return 0;
}
size_t SymbolFileDWARFDebugMap::ParseTypes(const SymbolContext &sc) {
SymbolFileDWARF *oso_dwarf = GetSymbolFile(sc);
if (oso_dwarf)
return oso_dwarf->ParseTypes(sc);
return 0;
}
size_t
SymbolFileDWARFDebugMap::ParseVariablesForContext(const SymbolContext &sc) {
SymbolFileDWARF *oso_dwarf = GetSymbolFile(sc);
if (oso_dwarf)
return oso_dwarf->ParseVariablesForContext(sc);
return 0;
}
Type *SymbolFileDWARFDebugMap::ResolveTypeUID(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->ResolveTypeUID(type_uid);
return NULL;
}
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, uint32_t resolve_scope, SymbolContext &sc) {
uint32_t resolved_flags = 0;
Symtab *symtab = m_obj_file->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 != NULL) {
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->GetSymbolVendor()->ResolveSymbolContext(
oso_so_addr, resolve_scope, sc);
}
}
}
}
}
}
return resolved_flags;
}
uint32_t SymbolFileDWARFDebugMap::ResolveSymbolContext(
const FileSpec &file_spec, uint32_t line, bool check_inlines,
uint32_t resolve_scope, SymbolContextList &sc_list) {
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)) {
// Match the full path if the incoming file_spec has a directory (not
// just a basename)
const bool full_match = (bool)file_spec.GetDirectory();
resolve = FileSpec::Equal(file_spec, so_file_spec, full_match);
}
}
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;
}
uint32_t SymbolFileDWARFDebugMap::PrivateFindGlobalVariables(
const 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 uint32_t original_size = variables.GetSize();
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) {
if (oso_dwarf->FindGlobalVariables(name, parent_decl_ctx, max_matches,
variables))
if (variables.GetSize() > max_matches)
break;
}
}
}
return variables.GetSize() - original_size;
}
uint32_t SymbolFileDWARFDebugMap::FindGlobalVariables(
const ConstString &name, const CompilerDeclContext *parent_decl_ctx,
uint32_t max_matches, VariableList &variables) {
// Remember how many variables are in the list before we search.
const uint32_t original_size = variables.GetSize();
uint32_t total_matches = 0;
ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool {
const uint32_t oso_matches = oso_dwarf->FindGlobalVariables(
name, parent_decl_ctx, max_matches, variables);
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;
});
// Return the number of variable that were appended to the list
return variables.GetSize() - original_size;
}
uint32_t
SymbolFileDWARFDebugMap::FindGlobalVariables(const RegularExpression &regex,
uint32_t max_matches,
VariableList &variables) {
// Remember how many variables are in the list before we search.
const uint32_t original_size = variables.GetSize();
uint32_t total_matches = 0;
ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool {
const uint32_t oso_matches =
oso_dwarf->FindGlobalVariables(regex, max_matches, variables);
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;
});
// Return the number of variable that were appended to the list
return variables.GetSize() - original_size;
}
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 = NULL;
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 != NULL)
*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 = NULL;
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 != NULL)
*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;
}
}
uint32_t SymbolFileDWARFDebugMap::FindFunctions(
const ConstString &name, const CompilerDeclContext *parent_decl_ctx,
uint32_t name_type_mask, bool include_inlines, bool append,
SymbolContextList &sc_list) {
static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
Timer scoped_timer(func_cat,
"SymbolFileDWARFDebugMap::FindFunctions (name = %s)",
name.GetCString());
uint32_t initial_size = 0;
if (append)
initial_size = sc_list.GetSize();
else
sc_list.Clear();
ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool {
uint32_t sc_idx = sc_list.GetSize();
if (oso_dwarf->FindFunctions(name, parent_decl_ctx, name_type_mask,
include_inlines, true, sc_list)) {
RemoveFunctionsWithModuleNotEqualTo(m_obj_file->GetModule(), sc_list,
sc_idx);
}
return false;
});
return sc_list.GetSize() - initial_size;
}
uint32_t SymbolFileDWARFDebugMap::FindFunctions(const RegularExpression &regex,
bool include_inlines,
bool append,
SymbolContextList &sc_list) {
static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
Timer scoped_timer(func_cat,
"SymbolFileDWARFDebugMap::FindFunctions (regex = '%s')",
regex.GetText().str().c_str());
uint32_t initial_size = 0;
if (append)
initial_size = sc_list.GetSize();
else
sc_list.Clear();
ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool {
uint32_t sc_idx = sc_list.GetSize();
if (oso_dwarf->FindFunctions(regex, include_inlines, true, sc_list)) {
RemoveFunctionsWithModuleNotEqualTo(m_obj_file->GetModule(), sc_list,
sc_idx);
}
return false;
});
return sc_list.GetSize() - initial_size;
}
size_t SymbolFileDWARFDebugMap::GetTypes(SymbolContextScope *sc_scope,
uint32_t type_mask,
TypeList &type_list) {
static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
Timer scoped_timer(func_cat,
"SymbolFileDWARFDebugMap::GetTypes (type_mask = 0x%8.8x)",
type_mask);
uint32_t initial_size = type_list.GetSize();
SymbolFileDWARF *oso_dwarf = NULL;
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;
});
}
return type_list.GetSize() - initial_size;
}
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(NULL)) {
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, const 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 = NULL;
TypeSP type_sp;
ObjectFile *module_objfile = m_obj_file->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,
NULL);
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 == false) {
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();
}
uint32_t SymbolFileDWARFDebugMap::FindTypes(
const SymbolContext &sc, const ConstString &name,
const CompilerDeclContext *parent_decl_ctx, bool append,
uint32_t max_matches,
llvm::DenseSet<lldb_private::SymbolFile *> &searched_symbol_files,
TypeMap &types) {
if (!append)
types.Clear();
const uint32_t initial_types_size = types.GetSize();
SymbolFileDWARF *oso_dwarf;
if (sc.comp_unit) {
oso_dwarf = GetSymbolFile(sc);
if (oso_dwarf)
return oso_dwarf->FindTypes(sc, name, parent_decl_ctx, append,
max_matches, searched_symbol_files, types);
} else {
ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool {
oso_dwarf->FindTypes(sc, name, parent_decl_ctx, append, max_matches,
searched_symbol_files, types);
if (types.GetSize() >= max_matches)
return true;
else
return false;
});
}
return types.GetSize() - initial_types_size;
}
//
// 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(
const lldb_private::SymbolContext &sc,
const lldb_private::ConstString &name,
const CompilerDeclContext *parent_decl_ctx) {
CompilerDeclContext matching_namespace;
SymbolFileDWARF *oso_dwarf;
if (sc.comp_unit) {
oso_dwarf = GetSymbolFile(sc);
if (oso_dwarf)
matching_namespace = oso_dwarf->FindNamespace(sc, name, parent_decl_ctx);
} else {
ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool {
matching_namespace = oso_dwarf->FindNamespace(sc, name, parent_decl_ctx);
return (bool)matching_namespace;
});
}
return matching_namespace;
}
//------------------------------------------------------------------
// 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 NULL;
}
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;
m_obj_file->GetModule()->GetSymbolVendor()->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->GetSymbolVendor()->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 NULL;
}
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;
}
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