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//===-- SectionLoadHistory.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/SectionLoadHistory.h"
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "lldb/Core/Stream.h"
#include "lldb/Target/SectionLoadList.h"
using namespace lldb;
using namespace lldb_private;
bool
SectionLoadHistory::IsEmpty() const
{
std::lock_guard<std::recursive_mutex> guard(m_mutex);
return m_stop_id_to_section_load_list.empty();
}
void
SectionLoadHistory::Clear ()
{
std::lock_guard<std::recursive_mutex> guard(m_mutex);
m_stop_id_to_section_load_list.clear();
}
uint32_t
SectionLoadHistory::GetLastStopID() const
{
std::lock_guard<std::recursive_mutex> guard(m_mutex);
if (m_stop_id_to_section_load_list.empty())
return 0;
else
return m_stop_id_to_section_load_list.rbegin()->first;
}
SectionLoadList *
SectionLoadHistory::GetSectionLoadListForStopID (uint32_t stop_id, bool read_only)
{
if (!m_stop_id_to_section_load_list.empty())
{
if (read_only)
{
// The section load list is for reading data only so we don't need to create
// a new SectionLoadList for the current stop ID, just return the section
// load list for the stop ID that is equal to or less than the current stop ID
if (stop_id == eStopIDNow)
{
// If we are asking for the latest and greatest value, it is always
// at the end of our list because that will be the highest stop ID.
StopIDToSectionLoadList::reverse_iterator rpos = m_stop_id_to_section_load_list.rbegin();
return rpos->second.get();
}
else
{
StopIDToSectionLoadList::iterator pos = m_stop_id_to_section_load_list.lower_bound(stop_id);
if (pos != m_stop_id_to_section_load_list.end() && pos->first == stop_id)
return pos->second.get();
else if (pos != m_stop_id_to_section_load_list.begin())
{
--pos;
return pos->second.get();
}
}
}
else
{
// You can only use "eStopIDNow" when reading from the section load history
assert(stop_id != eStopIDNow);
// We are updating the section load list (not read only), so if the stop ID
// passed in isn't the same as the last stop ID in our collection, then create
// a new node using the current stop ID
StopIDToSectionLoadList::iterator pos = m_stop_id_to_section_load_list.lower_bound(stop_id);
if (pos != m_stop_id_to_section_load_list.end() && pos->first == stop_id)
{
// We already have an entry for this value
return pos->second.get();
}
// We must make a new section load list that is based on the last valid
// section load list, so here we copy the last section load list and add
// a new node for the current stop ID.
StopIDToSectionLoadList::reverse_iterator rpos = m_stop_id_to_section_load_list.rbegin();
SectionLoadListSP section_load_list_sp(new SectionLoadList(*rpos->second.get()));
m_stop_id_to_section_load_list[stop_id] = section_load_list_sp;
return section_load_list_sp.get();
}
}
SectionLoadListSP section_load_list_sp(new SectionLoadList());
if (stop_id == eStopIDNow)
stop_id = 0;
m_stop_id_to_section_load_list[stop_id] = section_load_list_sp;
return section_load_list_sp.get();
}
SectionLoadList &
SectionLoadHistory::GetCurrentSectionLoadList ()
{
const bool read_only = true;
std::lock_guard<std::recursive_mutex> guard(m_mutex);
SectionLoadList *section_load_list = GetSectionLoadListForStopID (eStopIDNow, read_only);
assert(section_load_list != NULL);
return *section_load_list;
}
addr_t
SectionLoadHistory::GetSectionLoadAddress (uint32_t stop_id, const lldb::SectionSP §ion_sp)
{
std::lock_guard<std::recursive_mutex> guard(m_mutex);
const bool read_only = true;
SectionLoadList *section_load_list = GetSectionLoadListForStopID (stop_id, read_only);
return section_load_list->GetSectionLoadAddress(section_sp);
}
bool
SectionLoadHistory::ResolveLoadAddress (uint32_t stop_id, addr_t load_addr, Address &so_addr)
{
// First find the top level section that this load address exists in
std::lock_guard<std::recursive_mutex> guard(m_mutex);
const bool read_only = true;
SectionLoadList *section_load_list = GetSectionLoadListForStopID (stop_id, read_only);
return section_load_list->ResolveLoadAddress (load_addr, so_addr);
}
bool
SectionLoadHistory::SetSectionLoadAddress (uint32_t stop_id,
const lldb::SectionSP §ion_sp,
addr_t load_addr,
bool warn_multiple)
{
std::lock_guard<std::recursive_mutex> guard(m_mutex);
const bool read_only = false;
SectionLoadList *section_load_list = GetSectionLoadListForStopID (stop_id, read_only);
return section_load_list->SetSectionLoadAddress(section_sp, load_addr, warn_multiple);
}
size_t
SectionLoadHistory::SetSectionUnloaded (uint32_t stop_id, const lldb::SectionSP §ion_sp)
{
std::lock_guard<std::recursive_mutex> guard(m_mutex);
const bool read_only = false;
SectionLoadList *section_load_list = GetSectionLoadListForStopID (stop_id, read_only);
return section_load_list->SetSectionUnloaded (section_sp);
}
bool
SectionLoadHistory::SetSectionUnloaded (uint32_t stop_id, const lldb::SectionSP §ion_sp, addr_t load_addr)
{
std::lock_guard<std::recursive_mutex> guard(m_mutex);
const bool read_only = false;
SectionLoadList *section_load_list = GetSectionLoadListForStopID (stop_id, read_only);
return section_load_list->SetSectionUnloaded (section_sp, load_addr);
}
void
SectionLoadHistory::Dump (Stream &s, Target *target)
{
std::lock_guard<std::recursive_mutex> guard(m_mutex);
StopIDToSectionLoadList::iterator pos, end = m_stop_id_to_section_load_list.end();
for (pos = m_stop_id_to_section_load_list.begin(); pos != end; ++pos)
{
s.Printf("StopID = %u:\n", pos->first);
pos->second->Dump(s, target);
s.EOL();
}
}
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