4ad5def9b0
The Windows process plugin was broken up into multiple pieces a while back in order to share code between debugging live processes and minidumps (postmortem) debugging. The minidump portion was replaced by a cross-platform solution. This left the plugin split into a formerly "common" base classes and the derived classes for live debugging. This extra layer made the code harder to understand and work with. This patch simplifies these class hierarchies by rolling the live debugging concrete classes up to the base classes. Last week I posted my intent to make this change to lldb-dev, and I didn't hear any objections. This involved moving code and changing references to classes like ProcessWindowsLive to ProcessWindows. It still builds for both 32- and 64-bit, and the tests still pass on 32-bit. (Tests on 64-bit weren't passing before this refactor for unrelated reasons.) llvm-svn: 287770
126 lines
3.8 KiB
C++
126 lines
3.8 KiB
C++
//===-- TargetThreadWindows.cpp----------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Core/Log.h"
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#include "lldb/Core/Logging.h"
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#include "lldb/Core/State.h"
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#include "lldb/Host/HostInfo.h"
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#include "lldb/Host/HostNativeThreadBase.h"
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#include "lldb/Host/windows/HostThreadWindows.h"
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#include "lldb/Host/windows/windows.h"
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#include "lldb/Target/RegisterContext.h"
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#include "ProcessWindows.h"
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#include "ProcessWindowsLog.h"
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#include "TargetThreadWindows.h"
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#include "UnwindLLDB.h"
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#if defined(_WIN64)
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#include "x86/RegisterContextWindows_x64.h"
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#else
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#include "x86/RegisterContextWindows_x86.h"
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#endif
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using namespace lldb;
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using namespace lldb_private;
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TargetThreadWindows::TargetThreadWindows(ProcessWindows &process,
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const HostThread &thread)
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: Thread(process, thread.GetNativeThread().GetThreadId()),
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m_host_thread(thread) {}
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TargetThreadWindows::~TargetThreadWindows() { DestroyThread(); }
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void TargetThreadWindows::RefreshStateAfterStop() {
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::SuspendThread(m_host_thread.GetNativeThread().GetSystemHandle());
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SetState(eStateStopped);
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GetRegisterContext()->InvalidateIfNeeded(false);
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}
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void TargetThreadWindows::WillResume(lldb::StateType resume_state) {}
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void TargetThreadWindows::DidStop() {}
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RegisterContextSP TargetThreadWindows::GetRegisterContext() {
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if (!m_reg_context_sp)
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m_reg_context_sp = CreateRegisterContextForFrameIndex(0);
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return m_reg_context_sp;
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}
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RegisterContextSP
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TargetThreadWindows::CreateRegisterContextForFrame(StackFrame *frame) {
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return CreateRegisterContextForFrameIndex(frame->GetConcreteFrameIndex());
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}
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RegisterContextSP
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TargetThreadWindows::CreateRegisterContextForFrameIndex(uint32_t idx) {
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if (!m_reg_context_sp) {
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ArchSpec arch = HostInfo::GetArchitecture();
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switch (arch.GetMachine()) {
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case llvm::Triple::x86:
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#if defined(_WIN64)
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// FIXME: This is a Wow64 process, create a RegisterContextWindows_Wow64
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#else
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m_reg_context_sp.reset(new RegisterContextWindows_x86(*this, idx));
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#endif
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break;
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case llvm::Triple::x86_64:
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#if defined(_WIN64)
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m_reg_context_sp.reset(new RegisterContextWindows_x64(*this, idx));
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#else
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// LLDB is 32-bit, but the target process is 64-bit. We probably can't debug
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// this.
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#endif
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default:
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break;
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}
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}
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return m_reg_context_sp;
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}
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bool TargetThreadWindows::CalculateStopInfo() {
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SetStopInfo(m_stop_info_sp);
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return true;
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}
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Unwind *TargetThreadWindows::GetUnwinder() {
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// FIXME: Implement an unwinder based on the Windows unwinder exposed through
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// DIA SDK.
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if (m_unwinder_ap.get() == NULL)
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m_unwinder_ap.reset(new UnwindLLDB(*this));
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return m_unwinder_ap.get();
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}
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bool TargetThreadWindows::DoResume() {
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StateType resume_state = GetTemporaryResumeState();
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StateType current_state = GetState();
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if (resume_state == current_state)
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return true;
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if (resume_state == eStateStepping) {
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uint32_t flags_index =
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GetRegisterContext()->ConvertRegisterKindToRegisterNumber(
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eRegisterKindGeneric, LLDB_REGNUM_GENERIC_FLAGS);
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uint64_t flags_value =
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GetRegisterContext()->ReadRegisterAsUnsigned(flags_index, 0);
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flags_value |= 0x100; // Set the trap flag on the CPU
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GetRegisterContext()->WriteRegisterFromUnsigned(flags_index, flags_value);
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}
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if (resume_state == eStateStepping || resume_state == eStateRunning) {
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DWORD previous_suspend_count = 0;
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HANDLE thread_handle = m_host_thread.GetNativeThread().GetSystemHandle();
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do {
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previous_suspend_count = ::ResumeThread(thread_handle);
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} while (previous_suspend_count > 0);
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}
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return true;
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}
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