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//===-- TargetThreadWindows.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/Host/HostInfo.h"
#include "lldb/Host/HostNativeThreadBase.h"
#include "lldb/Host/windows/HostThreadWindows.h"
#include "lldb/Host/windows/windows.h"
#include "lldb/Target/RegisterContext.h"
#include "TargetThreadWindows.h"
#include "ProcessWindows.h"
#include "RegisterContextWindows_x86.h"
#include "UnwindLLDB.h"
using namespace lldb;
using namespace lldb_private;
TargetThreadWindows::TargetThreadWindows(ProcessWindows &process, const HostThread &thread)
: Thread(process, thread.GetNativeThread().GetThreadId())
, m_host_thread(thread)
{
}
TargetThreadWindows::~TargetThreadWindows()
{
DestroyThread();
}
void
TargetThreadWindows::RefreshStateAfterStop()
{
GetRegisterContext()->InvalidateIfNeeded(false);
}
void
TargetThreadWindows::WillResume(lldb::StateType resume_state)
{
}
void
TargetThreadWindows::DidStop()
{
}
RegisterContextSP
TargetThreadWindows::GetRegisterContext()
{
if (!m_reg_context_sp)
m_reg_context_sp = CreateRegisterContextForFrameIndex(0);
return m_reg_context_sp;
}
RegisterContextSP
TargetThreadWindows::CreateRegisterContextForFrame(StackFrame *frame)
{
return CreateRegisterContextForFrameIndex(frame->GetConcreteFrameIndex());
}
RegisterContextSP
TargetThreadWindows::CreateRegisterContextForFrameIndex(uint32_t idx)
{
if (!m_reg_context_sp)
{
ArchSpec arch = HostInfo::GetArchitecture();
switch (arch.GetMachine())
{
case llvm::Triple::x86:
m_reg_context_sp.reset(new RegisterContextWindows_x86(*this, idx));
break;
default:
// FIXME: Support x64 by creating a RegisterContextWindows_x86_64
break;
}
}
return m_reg_context_sp;
}
bool
TargetThreadWindows::CalculateStopInfo()
{
SetStopInfo(m_stop_info_sp);
return true;
}
Unwind *
TargetThreadWindows::GetUnwinder()
{
// FIXME: Implement an unwinder based on the Windows unwinder exposed through DIA SDK.
if (m_unwinder_ap.get() == NULL)
m_unwinder_ap.reset(new UnwindLLDB(*this));
return m_unwinder_ap.get();
}
bool
TargetThreadWindows::DoResume()
{
StateType resume_state = GetResumeState();
StateType current_state = GetState();
if (resume_state == current_state)
return true;
bool success = false;
DWORD suspend_count = 0;
switch (resume_state)
{
case eStateRunning:
SetState(resume_state);
do
{
suspend_count = ::ResumeThread(m_host_thread.GetNativeThread().GetSystemHandle());
} while (suspend_count > 1 && suspend_count != (DWORD)-1);
success = (suspend_count != (DWORD)-1);
break;
case eStateStopped:
case eStateSuspended:
if (current_state != eStateStopped && current_state != eStateSuspended)
{
suspend_count = SuspendThread(m_host_thread.GetNativeThread().GetSystemHandle());
success = (suspend_count != (DWORD)-1);
}
break;
default:
success = false;
}
return success;
}
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