diff options
Diffstat (limited to 'contrib/llvm/tools/lldb/source/Target/SectionLoadHistory.cpp')
| -rw-r--r-- | contrib/llvm/tools/lldb/source/Target/SectionLoadHistory.cpp | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/contrib/llvm/tools/lldb/source/Target/SectionLoadHistory.cpp b/contrib/llvm/tools/lldb/source/Target/SectionLoadHistory.cpp new file mode 100644 index 0000000..527168c --- /dev/null +++ b/contrib/llvm/tools/lldb/source/Target/SectionLoadHistory.cpp @@ -0,0 +1,182 @@ +//===-- 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 +{ + Mutex::Locker locker(m_mutex); + return m_stop_id_to_section_load_list.empty(); +} + +void +SectionLoadHistory::Clear () +{ + Mutex::Locker locker(m_mutex); + m_stop_id_to_section_load_list.clear(); +} + +uint32_t +SectionLoadHistory::GetLastStopID() const +{ + Mutex::Locker locker(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()) + { + 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(); + } + else + { + 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 becuase 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(); + } + } + return NULL; +} + +SectionLoadList & +SectionLoadHistory::GetCurrentSectionLoadList () +{ + const bool read_only = true; + 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) +{ + Mutex::Locker locker(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 + Mutex::Locker locker(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) +{ + Mutex::Locker locker(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) +{ + Mutex::Locker locker(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) +{ + Mutex::Locker locker(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) +{ + Mutex::Locker locker(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(); + } +} + + |
