C++ (Cpp) ObjectFileELF Examples

Example #1

File: ProcessElfCore.cpp Project: Galiro/freebsd

//----------------------------------------------------------------------
// Process Control
//----------------------------------------------------------------------
Error
ProcessElfCore::DoLoadCore ()
{
    Error error;
    if (!m_core_module_sp)
    {
        error.SetErrorString ("invalid core module");   
        return error;
    }

    ObjectFileELF *core = (ObjectFileELF *)(m_core_module_sp->GetObjectFile());
    if (core == NULL)
    {
        error.SetErrorString ("invalid core object file");   
        return error;
    }

    const uint32_t num_segments = core->GetProgramHeaderCount();
    if (num_segments == 0)
    {
        error.SetErrorString ("core file has no sections");   
        return error;
    }

    SetCanJIT(false);

    m_thread_data_valid = true;

    bool ranges_are_sorted = true;
    lldb::addr_t vm_addr = 0;
    /// Walk through segments and Thread and Address Map information.
    /// PT_NOTE - Contains Thread and Register information
    /// PT_LOAD - Contains a contiguous range of Process Address Space
    for(uint32_t i = 1; i <= num_segments; i++)
    {
        const elf::ELFProgramHeader *header = core->GetProgramHeaderByIndex(i);
        assert(header != NULL);

        DataExtractor data = core->GetSegmentDataByIndex(i);

        // Parse thread contexts and auxv structure
        if (header->p_type == llvm::ELF::PT_NOTE)
            ParseThreadContextsFromNoteSegment(header, data);

        // PT_LOAD segments contains address map
        if (header->p_type == llvm::ELF::PT_LOAD)
        {
            lldb::addr_t last_addr = AddAddressRangeFromLoadSegment(header);
            if (vm_addr > last_addr)
                ranges_are_sorted = false;
            vm_addr = last_addr;
        }
    }

    if (!ranges_are_sorted)
        m_core_aranges.Sort();

    // Even if the architecture is set in the target, we need to override
    // it to match the core file which is always single arch.
    ArchSpec arch (m_core_module_sp->GetArchitecture());
    if (arch.IsValid())
        m_target.SetArchitecture(arch);            

    return error;
}

Example #2

File: ProcessElfCore.cpp Project: kwitaszczyk/freebsd

//----------------------------------------------------------------------
// Process Control
//----------------------------------------------------------------------
Error
ProcessElfCore::DoLoadCore ()
{
    Error error;
    if (!m_core_module_sp)
    {
        error.SetErrorString ("invalid core module");
        return error;
    }

    ObjectFileELF *core = (ObjectFileELF *)(m_core_module_sp->GetObjectFile());
    if (core == NULL)
    {
        error.SetErrorString ("invalid core object file");
        return error;
    }

    const uint32_t num_segments = core->GetProgramHeaderCount();
    if (num_segments == 0)
    {
        error.SetErrorString ("core file has no segments");
        return error;
    }

    SetCanJIT(false);

    m_thread_data_valid = true;

    bool ranges_are_sorted = true;
    lldb::addr_t vm_addr = 0;
    /// Walk through segments and Thread and Address Map information.
    /// PT_NOTE - Contains Thread and Register information
    /// PT_LOAD - Contains a contiguous range of Process Address Space
    for(uint32_t i = 1; i <= num_segments; i++)
    {
        const elf::ELFProgramHeader *header = core->GetProgramHeaderByIndex(i);
        assert(header != NULL);

        DataExtractor data = core->GetSegmentDataByIndex(i);

        // Parse thread contexts and auxv structure
        if (header->p_type == llvm::ELF::PT_NOTE)
            ParseThreadContextsFromNoteSegment(header, data);

        // PT_LOAD segments contains address map
        if (header->p_type == llvm::ELF::PT_LOAD)
        {
            lldb::addr_t last_addr = AddAddressRangeFromLoadSegment(header);
            if (vm_addr > last_addr)
                ranges_are_sorted = false;
            vm_addr = last_addr;
        }
    }

    if (!ranges_are_sorted)
    {
        m_core_aranges.Sort();
        m_core_range_infos.Sort();
    }

    // Even if the architecture is set in the target, we need to override
    // it to match the core file which is always single arch.
    ArchSpec arch (m_core_module_sp->GetArchitecture());
    if (arch.IsValid())
        GetTarget().SetArchitecture(arch);

    SetUnixSignals(UnixSignals::Create(GetArchitecture()));

    // Core files are useless without the main executable. See if we can locate the main
    // executable using data we found in the core file notes.
    lldb::ModuleSP exe_module_sp = GetTarget().GetExecutableModule();
    if (!exe_module_sp)
    {
        // The first entry in the NT_FILE might be our executable
        if (!m_nt_file_entries.empty())
        {
            ModuleSpec exe_module_spec;
            exe_module_spec.GetArchitecture() = arch;
            exe_module_spec.GetFileSpec().SetFile(m_nt_file_entries[0].path.GetCString(), false);
            if (exe_module_spec.GetFileSpec())
            {
                exe_module_sp = GetTarget().GetSharedModule(exe_module_spec);
                if (exe_module_sp)
                    GetTarget().SetExecutableModule(exe_module_sp, false);
            }
        }
    }
    return error;
}