size_t
SectionLoadList::SetSectionUnloaded (const lldb::SectionSP §ion_sp)
{
size_t unload_count = 0;
if (section_sp)
{
Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER | LIBLLDB_LOG_VERBOSE));
if (log)
{
const FileSpec &module_file_spec (section_sp->GetModule()->GetFileSpec());
log->Printf ("SectionLoadList::%s (section = %p (%s.%s))",
__FUNCTION__, static_cast<void*>(section_sp.get()),
module_file_spec.GetPath().c_str(),
section_sp->GetName().AsCString());
}
Mutex::Locker locker(m_mutex);
sect_to_addr_collection::iterator sta_pos = m_sect_to_addr.find(section_sp.get());
if (sta_pos != m_sect_to_addr.end())
{
++unload_count;
addr_t load_addr = sta_pos->second;
m_sect_to_addr.erase (sta_pos);
addr_to_sect_collection::iterator ats_pos = m_addr_to_sect.find(load_addr);
if (ats_pos != m_addr_to_sect.end())
m_addr_to_sect.erase (ats_pos);
}
}
return unload_count;
}
bool
SectionLoadList::SetSectionUnloaded (const lldb::SectionSP §ion_sp, addr_t load_addr)
{
Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER | LIBLLDB_LOG_VERBOSE));
if (log)
{
ModuleSP module_sp = section_sp->GetModule();
std::string module_name("<Unknown>");
if (module_sp)
{
const FileSpec &module_file_spec (section_sp->GetModule()->GetFileSpec());
module_name = module_file_spec.GetPath();
}
log->Printf ("SectionLoadList::%s (section = %p (%s.%s), load_addr = 0x%16.16" PRIx64 ")",
__FUNCTION__, static_cast<void*>(section_sp.get()),
module_name.c_str(),
section_sp->GetName().AsCString(), load_addr);
}
bool erased = false;
std::lock_guard<std::recursive_mutex> guard(m_mutex);
sect_to_addr_collection::iterator sta_pos = m_sect_to_addr.find(section_sp.get());
if (sta_pos != m_sect_to_addr.end())
{
erased = true;
m_sect_to_addr.erase (sta_pos);
}
addr_to_sect_collection::iterator ats_pos = m_addr_to_sect.find(load_addr);
if (ats_pos != m_addr_to_sect.end())
{
erased = true;
m_addr_to_sect.erase (ats_pos);
}
return erased;
}
size_t SectionLoadList::SetSectionUnloaded(const lldb::SectionSP §ion_sp) {
size_t unload_count = 0;
if (section_sp) {
Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
if (log && log->GetVerbose()) {
ModuleSP module_sp = section_sp->GetModule();
std::string module_name("<Unknown>");
if (module_sp) {
const FileSpec &module_file_spec(
section_sp->GetModule()->GetFileSpec());
module_name = module_file_spec.GetPath();
}
log->Printf("SectionLoadList::%s (section = %p (%s.%s))", __FUNCTION__,
static_cast<void *>(section_sp.get()), module_name.c_str(),
section_sp->GetName().AsCString());
}
std::lock_guard<std::recursive_mutex> guard(m_mutex);
sect_to_addr_collection::iterator sta_pos =
m_sect_to_addr.find(section_sp.get());
if (sta_pos != m_sect_to_addr.end()) {
++unload_count;
addr_t load_addr = sta_pos->second;
m_sect_to_addr.erase(sta_pos);
addr_to_sect_collection::iterator ats_pos =
m_addr_to_sect.find(load_addr);
if (ats_pos != m_addr_to_sect.end())
m_addr_to_sect.erase(ats_pos);
}
}
return unload_count;
}
bool SectionLoadList::SetSectionLoadAddress(const lldb::SectionSP §ion,
addr_t load_addr,
bool warn_multiple) {
Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
ModuleSP module_sp(section->GetModule());
if (module_sp) {
LLDB_LOGV(log, "(section = {0} ({1}.{2}), load_addr = {3:x}) module = {4}",
section.get(), module_sp->GetFileSpec(), section->GetName(),
load_addr, module_sp.get());
if (section->GetByteSize() == 0)
return false; // No change
// Fill in the section -> load_addr map
std::lock_guard<std::recursive_mutex> guard(m_mutex);
sect_to_addr_collection::iterator sta_pos =
m_sect_to_addr.find(section.get());
if (sta_pos != m_sect_to_addr.end()) {
if (load_addr == sta_pos->second)
return false; // No change...
else
sta_pos->second = load_addr;
} else
m_sect_to_addr[section.get()] = load_addr;
// Fill in the load_addr -> section map
addr_to_sect_collection::iterator ats_pos = m_addr_to_sect.find(load_addr);
if (ats_pos != m_addr_to_sect.end()) {
// Some sections are ok to overlap, and for others we should warn. When
// we have multiple load addresses that correspond to a section, we will
// always attribute the section to the be last section that claims it
// exists at that address. Sometimes it is ok for more that one section
// to be loaded at a specific load address, and other times it isn't.
// The "warn_multiple" parameter tells us if we should warn in this case
// or not. The DynamicLoader plug-in subclasses should know which
// sections should warn and which shouldn't (darwin shared cache modules
// all shared the same "__LINKEDIT" sections, so the dynamic loader can
// pass false for "warn_multiple").
if (warn_multiple && section != ats_pos->second) {
ModuleSP module_sp(section->GetModule());
if (module_sp) {
ModuleSP curr_module_sp(ats_pos->second->GetModule());
if (curr_module_sp) {
module_sp->ReportWarning(
"address 0x%16.16" PRIx64
" maps to more than one section: %s.%s and %s.%s",
load_addr, module_sp->GetFileSpec().GetFilename().GetCString(),
section->GetName().GetCString(),
curr_module_sp->GetFileSpec().GetFilename().GetCString(),
ats_pos->second->GetName().GetCString());
}
}
}
ats_pos->second = section;
} else
m_addr_to_sect[load_addr] = section;
return true; // Changed
} else {
if (log) {
log->Printf(
"SectionLoadList::%s (section = %p (%s), load_addr = 0x%16.16" PRIx64
") error: module has been deleted",
__FUNCTION__, static_cast<void *>(section.get()),
section->GetName().AsCString(), load_addr);
}
}
return false;
}