llvm-project/lldb/source/Target/SectionLoadList.cpp

136 lines
4.1 KiB
C++

//===-- SectionLoadList.cpp -------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/Target/SectionLoadList.h"
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "lldb/Core/Log.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/Section.h"
#include "lldb/Core/Stream.h"
#include "lldb/Symbol/Block.h"
#include "lldb/Symbol/Symbol.h"
#include "lldb/Symbol/SymbolContext.h"
using namespace lldb;
using namespace lldb_private;
bool
SectionLoadList::IsEmpty() const
{
return m_section_load_info.IsEmpty();
}
void
SectionLoadList::Clear ()
{
m_section_load_info.Clear();
}
addr_t
SectionLoadList::GetSectionLoadAddress (const Section *section) const
{
// TODO: add support for the same section having multiple load addresses
addr_t section_load_addr = LLDB_INVALID_ADDRESS;
if (m_section_load_info.GetFirstKeyForValue (section, section_load_addr))
return section_load_addr;
return LLDB_INVALID_ADDRESS;
}
bool
SectionLoadList::SetSectionLoadAddress (const Section *section, addr_t load_addr)
{
Log *log = lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_SHLIB | LIBLLDB_LOG_VERBOSE);
if (log)
log->Printf ("SectionLoadList::%s (section = %p (%s.%s), load_addr = 0x%16.16llx)",
__FUNCTION__,
section,
section->GetModule()->GetFileSpec().GetFilename().AsCString(),
section->GetName().AsCString(),
load_addr);
const Section *existing_section = NULL;
Mutex::Locker locker(m_section_load_info.GetMutex());
if (m_section_load_info.GetValueForKeyNoLock (load_addr, existing_section))
{
if (existing_section == section)
return false; // No change
}
m_section_load_info.SetValueForKeyNoLock (load_addr, section);
return true; // Changed
}
size_t
SectionLoadList::SetSectionUnloaded (const Section *section)
{
Log *log = lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_SHLIB | LIBLLDB_LOG_VERBOSE);
if (log)
log->Printf ("SectionLoadList::%s (section = %p (%s.%s))",
__FUNCTION__,
section,
section->GetModule()->GetFileSpec().GetFilename().AsCString(),
section->GetName().AsCString());
Mutex::Locker locker(m_section_load_info.GetMutex());
size_t unload_count = 0;
addr_t section_load_addr;
while (m_section_load_info.GetFirstKeyForValueNoLock (section, section_load_addr))
{
unload_count += m_section_load_info.EraseNoLock (section_load_addr);
}
return unload_count;
}
bool
SectionLoadList::SetSectionUnloaded (const Section *section, addr_t load_addr)
{
Log *log = lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_SHLIB | LIBLLDB_LOG_VERBOSE);
if (log)
log->Printf ("SectionLoadList::%s (section = %p (%s.%s), load_addr = 0x%16.16llx)",
__FUNCTION__,
section,
section->GetModule()->GetFileSpec().GetFilename().AsCString(),
section->GetName().AsCString(),
load_addr);
return m_section_load_info.Erase (load_addr) == 1;
}
bool
SectionLoadList::ResolveLoadAddress (addr_t load_addr, Address &so_addr) const
{
addr_t section_load_addr = LLDB_INVALID_ADDRESS;
const Section *section = NULL;
// First find the top level section that this load address exists in
if (m_section_load_info.LowerBound (load_addr, section_load_addr, section, true))
{
addr_t offset = load_addr - section_load_addr;
if (offset < section->GetByteSize())
{
// We have found the top level section, now we need to find the
// deepest child section.
return section->ResolveContainedAddress (offset, so_addr);
}
}
so_addr.Clear();
return false;
}