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//===-- ThreadElfCore.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/Core/DataExtractor.h"
#include "lldb/Target/RegisterContext.h"
#include "lldb/Target/StopInfo.h"
#include "lldb/Target/Target.h"
#include "lldb/Target/Unwind.h"
#include "ProcessPOSIXLog.h"
#include "ThreadElfCore.h"
#include "ProcessElfCore.h"
#include "RegisterContextCoreFreeBSD_x86_64.h"
#include "RegisterContextCoreLinux_x86_64.h"
using namespace lldb;
using namespace lldb_private;
//----------------------------------------------------------------------
// Construct a Thread object with given data
//----------------------------------------------------------------------
ThreadElfCore::ThreadElfCore (Process &process, tid_t tid,
const ThreadData &td) :
Thread(process, tid),
m_thread_name(td.name),
m_thread_reg_ctx_sp (),
m_signo(td.signo),
m_gpregset_data(td.gpregset),
m_fpregset_data(td.fpregset)
{
}
ThreadElfCore::~ThreadElfCore ()
{
DestroyThread();
}
void
ThreadElfCore::RefreshStateAfterStop()
{
GetRegisterContext()->InvalidateIfNeeded (false);
}
void
ThreadElfCore::ClearStackFrames ()
{
Unwind *unwinder = GetUnwinder ();
if (unwinder)
unwinder->Clear();
Thread::ClearStackFrames();
}
RegisterContextSP
ThreadElfCore::GetRegisterContext ()
{
if (m_reg_context_sp.get() == NULL) {
m_reg_context_sp = CreateRegisterContextForFrame (NULL);
}
return m_reg_context_sp;
}
RegisterContextSP
ThreadElfCore::CreateRegisterContextForFrame (StackFrame *frame)
{
RegisterContextSP reg_ctx_sp;
uint32_t concrete_frame_idx = 0;
Log *log (ProcessPOSIXLog::GetLogIfAllCategoriesSet (POSIX_LOG_THREAD));
if (frame)
concrete_frame_idx = frame->GetConcreteFrameIndex ();
if (concrete_frame_idx == 0)
{
if (m_thread_reg_ctx_sp)
return m_thread_reg_ctx_sp;
ProcessElfCore *process = static_cast<ProcessElfCore *>(GetProcess().get());
ArchSpec arch = process->GetArchitecture();
switch (arch.GetMachine())
{
case llvm::Triple::x86_64:
switch (arch.GetTriple().getOS())
{
case llvm::Triple::FreeBSD:
m_thread_reg_ctx_sp.reset(new RegisterContextCoreFreeBSD_x86_64 (*this, m_gpregset_data, m_fpregset_data));
break;
case llvm::Triple::Linux:
m_thread_reg_ctx_sp.reset(new RegisterContextCoreLinux_x86_64 (*this, m_gpregset_data, m_fpregset_data));
break;
default:
if (log)
log->Printf ("elf-core::%s:: OS(%d) not supported",
__FUNCTION__, arch.GetTriple().getOS());
assert (false && "OS not supported");
break;
}
break;
default:
if (log)
log->Printf ("elf-core::%s:: Architecture(%d) not supported",
__FUNCTION__, arch.GetMachine());
assert (false && "Architecture not supported");
}
reg_ctx_sp = m_thread_reg_ctx_sp;
}
else if (m_unwinder_ap.get())
{
reg_ctx_sp = m_unwinder_ap->CreateRegisterContextForFrame (frame);
}
return reg_ctx_sp;
}
bool
ThreadElfCore::CalculateStopInfo ()
{
ProcessSP process_sp (GetProcess());
if (process_sp)
{
SetStopInfo(StopInfo::CreateStopReasonWithSignal (*this, m_signo));
return true;
}
return false;
}
//----------------------------------------------------------------
// Parse PRSTATUS from NOTE entry
//----------------------------------------------------------------
ELFLinuxPrStatus::ELFLinuxPrStatus()
{
memset(this, 0, sizeof(ELFLinuxPrStatus));
}
bool
ELFLinuxPrStatus::Parse(DataExtractor &data, ArchSpec &arch)
{
ByteOrder byteorder = data.GetByteOrder();
size_t len;
switch(arch.GetCore())
{
case ArchSpec::eCore_x86_64_x86_64:
len = data.ExtractBytes(0, ELFLINUXPRSTATUS64_SIZE, byteorder, this);
return len == ELFLINUXPRSTATUS64_SIZE;
default:
return false;
}
}
//----------------------------------------------------------------
// Parse PRPSINFO from NOTE entry
//----------------------------------------------------------------
ELFLinuxPrPsInfo::ELFLinuxPrPsInfo()
{
memset(this, 0, sizeof(ELFLinuxPrPsInfo));
}
bool
ELFLinuxPrPsInfo::Parse(DataExtractor &data, ArchSpec &arch)
{
ByteOrder byteorder = data.GetByteOrder();
size_t len;
switch(arch.GetCore())
{
case ArchSpec::eCore_x86_64_x86_64:
len = data.ExtractBytes(0, ELFLINUXPRPSINFO64_SIZE, byteorder, this);
return len == ELFLINUXPRPSINFO64_SIZE;
default:
return false;
}
}
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