2010-09-15 07:52:43 +08:00
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//===-- SectionLoadList.cpp -------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Target/SectionLoadList.h"
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// C Includes
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// C++ Includes
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// Other libraries and framework includes
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// Project includes
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#include "lldb/Core/Log.h"
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#include "lldb/Core/Module.h"
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#include "lldb/Core/Section.h"
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#include "lldb/Core/Stream.h"
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#include "lldb/Symbol/Block.h"
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#include "lldb/Symbol/Symbol.h"
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#include "lldb/Symbol/SymbolContext.h"
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using namespace lldb;
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using namespace lldb_private;
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bool
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SectionLoadList::IsEmpty() const
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{
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2010-12-08 13:08:21 +08:00
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Mutex::Locker locker(m_mutex);
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2011-02-05 10:25:06 +08:00
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return m_addr_to_sect.empty();
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2010-09-15 07:52:43 +08:00
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}
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void
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SectionLoadList::Clear ()
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{
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2010-12-08 13:08:21 +08:00
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Mutex::Locker locker(m_mutex);
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2011-02-05 10:25:06 +08:00
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m_addr_to_sect.clear();
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m_sect_to_addr.clear();
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2010-09-15 07:52:43 +08:00
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}
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addr_t
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SectionLoadList::GetSectionLoadAddress (const lldb::SectionSP §ion) const
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{
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// TODO: add support for the same section having multiple load addresses
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addr_t section_load_addr = LLDB_INVALID_ADDRESS;
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2010-12-08 13:08:21 +08:00
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if (section)
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{
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Mutex::Locker locker(m_mutex);
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2012-07-07 09:24:12 +08:00
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sect_to_addr_collection::const_iterator pos = m_sect_to_addr.find (section.get());
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2011-02-05 10:25:06 +08:00
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if (pos != m_sect_to_addr.end())
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section_load_addr = pos->second;
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2010-12-08 13:08:21 +08:00
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}
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return section_load_addr;
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2010-09-15 07:52:43 +08:00
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}
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bool
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SectionLoadList::SetSectionLoadAddress (const lldb::SectionSP §ion, addr_t load_addr, bool warn_multiple)
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{
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LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER | LIBLLDB_LOG_VERBOSE));
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2010-09-15 07:52:43 +08:00
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if (log)
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{
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const FileSpec &module_file_spec (section->GetModule()->GetFileSpec());
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log->Printf ("SectionLoadList::%s (section = %p (%s%s%s.%s), load_addr = 0x%16.16llx)",
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__FUNCTION__,
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section.get(),
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module_file_spec.GetDirectory().AsCString(),
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module_file_spec.GetDirectory() ? "/" : "",
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module_file_spec.GetFilename().AsCString(),
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section->GetName().AsCString(),
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load_addr);
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2010-12-14 10:59:59 +08:00
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}
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2012-02-14 07:10:39 +08:00
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if (section->GetByteSize() == 0)
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return false; // No change
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2012-04-17 05:01:30 +08:00
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// Fill in the section -> load_addr map
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Mutex::Locker locker(m_mutex);
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sect_to_addr_collection::iterator sta_pos = m_sect_to_addr.find(section.get());
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if (sta_pos != m_sect_to_addr.end())
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{
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if (load_addr == sta_pos->second)
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return false; // No change...
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else
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2011-02-05 10:25:06 +08:00
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sta_pos->second = load_addr;
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2010-12-08 13:08:21 +08:00
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}
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else
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2012-07-07 09:24:12 +08:00
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m_sect_to_addr[section.get()] = load_addr;
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2011-02-05 10:25:06 +08:00
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2012-04-17 05:01:30 +08:00
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// Fill in the load_addr -> section map
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2011-02-05 10:25:06 +08:00
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addr_to_sect_collection::iterator ats_pos = m_addr_to_sect.find(load_addr);
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if (ats_pos != m_addr_to_sect.end())
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2010-12-08 13:08:21 +08:00
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{
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2012-04-17 05:01:30 +08:00
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// Some sections are ok to overlap, and for others we should warn. When
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// we have multiple load addresses that correspond to a section, we will
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// allways attribute the section to the be last section that claims it
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// exists at that address. Sometimes it is ok for more that one section
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// to be loaded at a specific load address, and other times it isn't.
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// The "warn_multiple" parameter tells us if we should warn in this case
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// or not. The DynamicLoader plug-in subclasses should know which
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// sections should warn and which shouldn't (darwin shared cache modules
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// all shared the same "__LINKEDIT" sections, so the dynamic loader can
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// pass false for "warn_multiple").
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if (warn_multiple && section != ats_pos->second)
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2012-02-14 07:10:39 +08:00
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{
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ModuleSP module_sp (section->GetModule());
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if (module_sp)
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{
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module_sp->ReportWarning ("address 0x%16.16llx maps to more than one section: %s.%s and %s.%s",
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load_addr,
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module_sp->GetFileSpec().GetFilename().GetCString(),
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section->GetName().GetCString(),
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ats_pos->second->GetModule()->GetFileSpec().GetFilename().GetCString(),
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ats_pos->second->GetName().GetCString());
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2012-02-14 07:10:39 +08:00
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}
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}
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2011-02-05 10:25:06 +08:00
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ats_pos->second = section;
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2010-09-15 07:52:43 +08:00
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}
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else
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m_addr_to_sect[load_addr] = section;
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2010-09-15 07:52:43 +08:00
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return true; // Changed
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}
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size_t
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SectionLoadList::SetSectionUnloaded (const lldb::SectionSP §ion_sp)
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2010-09-15 07:52:43 +08:00
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{
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size_t unload_count = 0;
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2012-07-07 09:24:12 +08:00
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if (section_sp)
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{
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2012-07-07 09:24:12 +08:00
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LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER | LIBLLDB_LOG_VERBOSE));
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2010-09-15 07:52:43 +08:00
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2012-07-07 09:24:12 +08:00
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if (log)
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{
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const FileSpec &module_file_spec (section_sp->GetModule()->GetFileSpec());
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log->Printf ("SectionLoadList::%s (section = %p (%s%s%s.%s))",
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__FUNCTION__,
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section_sp.get(),
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module_file_spec.GetDirectory().AsCString(),
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module_file_spec.GetDirectory() ? "/" : "",
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module_file_spec.GetFilename().AsCString(),
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section_sp->GetName().AsCString());
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}
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2011-02-05 10:25:06 +08:00
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2012-07-07 09:24:12 +08:00
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Mutex::Locker locker(m_mutex);
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sect_to_addr_collection::iterator sta_pos = m_sect_to_addr.find(section_sp.get());
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if (sta_pos != m_sect_to_addr.end())
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{
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addr_t load_addr = sta_pos->second;
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m_sect_to_addr.erase (sta_pos);
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addr_to_sect_collection::iterator ats_pos = m_addr_to_sect.find(load_addr);
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if (ats_pos != m_addr_to_sect.end())
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m_addr_to_sect.erase (ats_pos);
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}
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2011-02-05 10:25:06 +08:00
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}
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2010-09-15 07:52:43 +08:00
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return unload_count;
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}
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bool
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SectionLoadList::SetSectionUnloaded (const lldb::SectionSP §ion_sp, addr_t load_addr)
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{
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2010-11-06 09:53:30 +08:00
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LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER | LIBLLDB_LOG_VERBOSE));
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2010-09-15 07:52:43 +08:00
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if (log)
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2010-12-14 10:59:59 +08:00
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{
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2012-07-07 09:24:12 +08:00
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const FileSpec &module_file_spec (section_sp->GetModule()->GetFileSpec());
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2010-12-14 10:59:59 +08:00
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log->Printf ("SectionLoadList::%s (section = %p (%s%s%s.%s), load_addr = 0x%16.16llx)",
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__FUNCTION__,
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2012-07-07 09:24:12 +08:00
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section_sp.get(),
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2010-12-14 10:59:59 +08:00
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module_file_spec.GetDirectory().AsCString(),
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module_file_spec.GetDirectory() ? "/" : "",
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module_file_spec.GetFilename().AsCString(),
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2012-07-07 09:24:12 +08:00
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section_sp->GetName().AsCString(),
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2010-09-15 07:52:43 +08:00
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load_addr);
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2010-12-14 10:59:59 +08:00
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}
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bool erased = false;
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2010-12-08 13:08:21 +08:00
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Mutex::Locker locker(m_mutex);
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2012-07-07 09:24:12 +08:00
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sect_to_addr_collection::iterator sta_pos = m_sect_to_addr.find(section_sp.get());
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2011-02-05 10:25:06 +08:00
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if (sta_pos != m_sect_to_addr.end())
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{
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erased = true;
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m_sect_to_addr.erase (sta_pos);
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}
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addr_to_sect_collection::iterator ats_pos = m_addr_to_sect.find(load_addr);
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if (ats_pos != m_addr_to_sect.end())
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{
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erased = true;
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m_addr_to_sect.erase (ats_pos);
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}
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return erased;
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2010-09-15 07:52:43 +08:00
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}
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bool
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SectionLoadList::ResolveLoadAddress (addr_t load_addr, Address &so_addr) const
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{
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2010-12-08 13:08:21 +08:00
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// First find the top level section that this load address exists in
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Mutex::Locker locker(m_mutex);
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2011-05-18 02:13:59 +08:00
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if (!m_addr_to_sect.empty())
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{
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addr_to_sect_collection::const_iterator pos = m_addr_to_sect.lower_bound (load_addr);
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if (pos != m_addr_to_sect.end())
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{
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if (load_addr != pos->first && pos != m_addr_to_sect.begin())
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--pos;
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if (load_addr >= pos->first)
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2010-12-22 10:02:45 +08:00
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{
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2011-05-18 02:13:59 +08:00
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addr_t offset = load_addr - pos->first;
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if (offset < pos->second->GetByteSize())
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{
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// We have found the top level section, now we need to find the
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// deepest child section.
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return pos->second->ResolveContainedAddress (offset, so_addr);
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}
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}
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}
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else
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{
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2011-05-19 02:22:47 +08:00
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// There are no entries that have an address that is >= load_addr,
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// so we need to check the last entry on our collection.
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addr_to_sect_collection::const_reverse_iterator rpos = m_addr_to_sect.rbegin();
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if (load_addr >= rpos->first)
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2011-05-18 02:13:59 +08:00
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{
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2011-05-19 02:22:47 +08:00
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addr_t offset = load_addr - rpos->first;
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if (offset < rpos->second->GetByteSize())
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2011-05-18 02:13:59 +08:00
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{
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// We have found the top level section, now we need to find the
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// deepest child section.
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2011-05-19 02:22:47 +08:00
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return rpos->second->ResolveContainedAddress (offset, so_addr);
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2011-05-18 02:13:59 +08:00
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}
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2010-12-22 10:02:45 +08:00
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}
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2010-09-15 07:52:43 +08:00
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}
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}
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so_addr.Clear();
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return false;
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}
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2010-12-08 13:08:21 +08:00
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void
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SectionLoadList::Dump (Stream &s, Target *target)
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{
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Mutex::Locker locker(m_mutex);
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2011-02-05 10:25:06 +08:00
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addr_to_sect_collection::const_iterator pos, end;
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for (pos = m_addr_to_sect.begin(), end = m_addr_to_sect.end(); pos != end; ++pos)
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2010-12-08 13:08:21 +08:00
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{
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s.Printf("addr = 0x%16.16llx, section = %p: ", pos->first, pos->second.get());
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2010-12-08 13:08:21 +08:00
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pos->second->Dump (&s, target, 0);
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}
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}
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