1 //===-- DynamicLoaderHexagonDYLD.cpp --------------------------------------===//
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
10 #include "lldb/Core/Module.h"
15 #include "lldb/Target/Process.h"
16 #include "lldb/Target/Target.h"
17 #include "lldb/Target/Thread.h"
18 #include "lldb/Target/ThreadPlanRunToAddress.h"
35 //      When we connect to a target we find the dyld breakpoint address.  We put  in LLDB_PLUGIN_DEFINE()
42 //      target calls dlinit().  in LLDB_PLUGIN_DEFINE()
53   ModuleSP module = proc->GetTarget().GetExecutableModule();  in LLDB_PLUGIN_DEFINE()  local
54   assert(module.get() != nullptr);  in LLDB_PLUGIN_DEFINE()
56   ObjectFile *exe = module->GetObjectFile();  in LLDB_PLUGIN_DEFINE()
59   lldb_private::Symtab *symtab = exe->GetSymtab();  in LLDB_PLUGIN_DEFINE()
62   for (size_t i = 0; i < symtab->GetNumSymbols(); i++) {  in LLDB_PLUGIN_DEFINE()
63     const Symbol *sym = symtab->SymbolAtIndex(i);  in LLDB_PLUGIN_DEFINE()
65     ConstString symName = sym->GetName();  in LLDB_PLUGIN_DEFINE()
68       Address addr = sym->GetAddress();  in LLDB_PLUGIN_DEFINE()
69       return addr.GetLoadAddress(&proc->GetTarget());  in LLDB_PLUGIN_DEFINE()
83   return "Dynamic loader plug-in that watches for shared library "  in GetPluginDescriptionStatic()
92         process->GetTarget().GetArchitecture().GetTriple();  in CreateInstance()
109     m_process->GetTarget().RemoveBreakpointByID(m_dyld_bid);  in ~DynamicLoaderHexagonDYLD()
129   m_process->SetCanJIT(false);  in DidAttach()
132   m_process->SetCanInterpretFunctionCalls(true);  in DidAttach()
134   // Add the current executable to the module list  in DidAttach()
147   // Callback for the target to give it the loaded module list  in DidAttach()
148   m_process->GetTarget().ModulesDidLoad(module_list);  in DidAttach()
161 /// Checks to see if the target module has changed, updates the target
162 /// accordingly and returns the target executable module.
164   Target &target = m_process->GetTarget();  in GetTargetExecutable()  local
165   ModuleSP executable = target.GetExecutableModule();  in GetTargetExecutable()
171   // The target executable file does not exits  in GetTargetExecutable()
172   if (!FileSystem::Instance().Exists(executable->GetFileSpec()))  in GetTargetExecutable()
175   // Prep module for loading  in GetTargetExecutable()
176   ModuleSpec module_spec(executable->GetFileSpec(),  in GetTargetExecutable()
177                          executable->GetArchitecture());  in GetTargetExecutable()
178   ModuleSP module_sp(new Module(module_spec));  in GetTargetExecutable()
180   // Check if the executable has changed and set it to the target executable if  in GetTargetExecutable()
182   if (module_sp.get() && module_sp->GetUUID().IsValid() &&  in GetTargetExecutable()
183       executable->GetUUID().IsValid()) {  in GetTargetExecutable()
185     if (module_sp->GetUUID() != executable->GetUUID())  in GetTargetExecutable()
187   } else if (executable->FileHasChanged())  in GetTargetExecutable()
194   executable = target.GetOrCreateModule(module_spec, true /* notify */);  in GetTargetExecutable()
195   if (executable.get() != target.GetExecutableModulePointer()) {  in GetTargetExecutable()
198     target.SetExecutableModule(executable, eLoadDependentsNo);  in GetTargetExecutable()
207 void DynamicLoaderHexagonDYLD::UpdateLoadedSections(ModuleSP module,  in UpdateLoadedSections()  argument
211   Target &target = m_process->GetTarget();  in UpdateLoadedSections()  local
212   const SectionList *sections = GetSectionListFromModule(module);  in UpdateLoadedSections()
214   assert(sections && "SectionList missing from loaded module.");  in UpdateLoadedSections()
216   m_loaded_modules[module] = link_map_addr;  in UpdateLoadedSections()
218   const size_t num_sections = sections->GetSize();  in UpdateLoadedSections()
221     SectionSP section_sp(sections->GetSectionAtIndex(i));  in UpdateLoadedSections()
222     lldb::addr_t new_load_addr = section_sp->GetFileAddress() + base_addr;  in UpdateLoadedSections()
234     target.SetSectionLoadAddress(section_sp, new_load_addr);  in UpdateLoadedSections()
238 /// Removes the loaded sections from the target in \p module.
240 /// \param module The module to traverse.
241 void DynamicLoaderHexagonDYLD::UnloadSections(const ModuleSP module) {  in UnloadSections()  argument
242   Target &target = m_process->GetTarget();  in UnloadSections()  local
243   const SectionList *sections = GetSectionListFromModule(module);  in UnloadSections()
245   assert(sections && "SectionList missing from unloaded module.");  in UnloadSections()
247   m_loaded_modules.erase(module);  in UnloadSections()
249   const size_t num_sections = sections->GetSize();  in UnloadSections()
251     SectionSP section_sp(sections->GetSectionAtIndex(i));  in UnloadSections()
252     target.SetSectionUnloaded(section_sp);  in UnloadSections()
268   Target &target = m_process->GetTarget();  in SetRendezvousBreakpoint()  local
283         target.CreateBreakpoint(break_addr, true, false).get();  in SetRendezvousBreakpoint()
284     dyld_break->SetCallback(RendezvousBreakpointHit, this, true);  in SetRendezvousBreakpoint()
285     dyld_break->SetBreakpointKind("shared-library-event");  in SetRendezvousBreakpoint()
286     m_dyld_bid = dyld_break->GetID();  in SetRendezvousBreakpoint()
289     assert(target.GetBreakpointByID(m_dyld_bid)  in SetRendezvousBreakpoint()
290                ->FindLocationByAddress(break_addr)  in SetRendezvousBreakpoint()
291                ->GetBreakpoint()  in SetRendezvousBreakpoint()
317   if (!dyld_instance->m_rendezvous.IsValid()) {  in RendezvousBreakpointHit()
318     Process *proc = dyld_instance->m_process;  in RendezvousBreakpointHit()
324       dyld_instance->m_rendezvous.SetRendezvousAddress(structAddr);  in RendezvousBreakpointHit()
332   dyld_instance->RefreshModules();  in RendezvousBreakpointHit()
334   // Return true to stop the target, false to just let the target run.  in RendezvousBreakpointHit()
335   return dyld_instance->GetStopWhenImagesChange();  in RendezvousBreakpointHit()
349   ModuleList &loaded_modules = m_process->GetTarget().GetImages();  in RefreshModules()
356       FileSpec file(I->path);  in RefreshModules()
359           LoadModuleAtAddress(file, I->link_addr, I->base_addr, true);  in RefreshModules()
366         LLDB_LOGF(log, "Target is loading '%s'", I->path.c_str());  in RefreshModules()
368           LLDB_LOGF(log, "LLDB failed to load '%s'", I->path.c_str());  in RefreshModules()
370           LLDB_LOGF(log, "LLDB successfully loaded '%s'", I->path.c_str());  in RefreshModules()
373     m_process->GetTarget().ModulesDidLoad(new_modules);  in RefreshModules()
381       FileSpec file(I->path);  in RefreshModules()
391       LLDB_LOGF(log, "Target is unloading '%s'", I->path.c_str());  in RefreshModules()
394     m_process->GetTarget().ModulesDidUnload(old_modules, false);  in RefreshModules()
407   const SymbolContext &context = frame->GetSymbolContext(eSymbolContextSymbol);  in GetStepThroughTrampolinePlan()
410   if (sym == nullptr || !sym->IsTrampoline())  in GetStepThroughTrampolinePlan()
414       sym->GetMangled().GetName(Mangled::ePreferMangled);  in GetStepThroughTrampolinePlan()
419   Target &target = thread.GetProcess()->GetTarget();  in GetStepThroughTrampolinePlan()  local
420   const ModuleList &images = target.GetImages();  in GetStepThroughTrampolinePlan()
431     lldb::addr_t addr = range.GetBaseAddress().GetLoadAddress(&target);  in GetStepThroughTrampolinePlan()
465   // The rendezvous class doesn't enumerate the main module, so track that  in LoadAllCurrentModules()
471     const char *module_path = I->path.c_str();  in LoadAllCurrentModules()
474         LoadModuleAtAddress(file, I->link_addr, I->base_addr, true);  in LoadAllCurrentModules()
480                 "DynamicLoaderHexagonDYLD::%s failed loading module %s at "  in LoadAllCurrentModules()
482                 __FUNCTION__, module_path, I->base_addr);  in LoadAllCurrentModules()
486   m_process->GetTarget().ModulesDidLoad(module_list);  in LoadAllCurrentModules()
514   // Get the current executable module  in GetEntryPoint()
515   Module &module = *(m_process->GetTarget().GetExecutableModule().get());  in GetEntryPoint()  local
516   // Get the object file (elf file) for this module  in GetEntryPoint()
517   lldb_private::ObjectFile &object = *(module.GetObjectFile());  in GetEntryPoint()
530     const ModuleSP module) const {  in GetSectionListFromModule()
532   if (module.get()) {  in GetSectionListFromModule()
533     ObjectFile *obj_file = module->GetObjectFile();  in GetSectionListFromModule()
535       sections = obj_file->GetSectionList();  in GetSectionListFromModule()
543   int value = (int)process->ReadUnsignedIntegerFromMemory(  in ReadInt()
546     return -1;  in ReadInt()
552 DynamicLoaderHexagonDYLD::GetThreadLocalData(const lldb::ModuleSP module,  in GetThreadLocalData()  argument
555   auto it = m_loaded_modules.find(module);  in GetThreadLocalData()
559   addr_t link_map = it->second;  in GetThreadLocalData()
569   addr_t tp = thread->GetThreadPointer();  in GetThreadLocalData()
573   // Find the module's modid.  in GetThreadLocalData()
575   if (modid == -1)  in GetThreadLocalData()
584   // Find the TLS block for this module.  in GetThreadLocalData()
588   Module *mod = module.get();  in GetThreadLocalData()
592             "module=%s, link_map=0x%" PRIx64 ", tp=0x%" PRIx64  in GetThreadLocalData()
594             mod->GetObjectName().AsCString(""), link_map, tp, modid, tls_block);  in GetThreadLocalData()