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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/contrib/llvm-project/lldb/source/Plugins/Process/FreeBSD/NativeThreadFreeBSD.h
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//===-- NativeThreadFreeBSD.h --------------------------------- -*- C++ -*-===//

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//

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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

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// See https://llvm.org/LICENSE.txt for license information.

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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

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//

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//===----------------------------------------------------------------------===//

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#ifndef liblldb_NativeThreadFreeBSD_H_

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#define liblldb_NativeThreadFreeBSD_H_

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#include "lldb/Host/common/NativeThreadProtocol.h"

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#include "Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD.h"

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#include <csignal>

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#include <map>

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#include <string>

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namespace lldb_private {

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namespace process_freebsd {

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class NativeProcessFreeBSD;

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class NativeThreadFreeBSD : public NativeThreadProtocol {

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  friend class NativeProcessFreeBSD;

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public:

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  NativeThreadFreeBSD(NativeProcessFreeBSD &process, lldb::tid_t tid);

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  // NativeThreadProtocol Interface

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  std::string GetName() override;

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  lldb::StateType GetState() override;

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  bool GetStopReason(ThreadStopInfo &stop_info,

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                     std::string &description) override;

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  NativeRegisterContextFreeBSD &GetRegisterContext() override;

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  Status SetWatchpoint(lldb::addr_t addr, size_t size, uint32_t watch_flags,

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                       bool hardware) override;

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  Status RemoveWatchpoint(lldb::addr_t addr) override;

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  Status SetHardwareBreakpoint(lldb::addr_t addr, size_t size) override;

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  Status RemoveHardwareBreakpoint(lldb::addr_t addr) override;

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  NativeProcessFreeBSD &GetProcess();

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  llvm::Expected<std::unique_ptr<llvm::MemoryBuffer>>

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  GetSiginfo() const override;

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private:

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  // Interface for friend classes

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  Status Resume();

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  Status SingleStep();

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  Status Suspend();

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  void SetStoppedBySignal(uint32_t signo, const siginfo_t *info = nullptr);

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  void SetStoppedByBreakpoint();

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  void SetStoppedByTrace();

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  void SetStoppedByExec();

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  void SetStoppedByWatchpoint(uint32_t wp_index);

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  void SetStoppedByFork(lldb::pid_t child_pid, lldb::tid_t child_tid);

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  void SetStoppedByVFork(lldb::pid_t child_pid, lldb::tid_t child_tid);

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  void SetStoppedByVForkDone();

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  void SetStoppedWithNoReason();

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  void SetStopped();

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  void SetRunning();

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  void SetStepping();

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  llvm::Error CopyWatchpointsFrom(NativeThreadFreeBSD &source);

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  // Member Variables

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  lldb::StateType m_state;

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  ThreadStopInfo m_stop_info;

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  std::unique_ptr<NativeRegisterContextFreeBSD> m_reg_context_up;

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  std::string m_stop_description;

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  using WatchpointIndexMap = std::map<lldb::addr_t, uint32_t>;

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  WatchpointIndexMap m_watchpoint_index_map;

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  WatchpointIndexMap m_hw_break_index_map;

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};

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typedef std::shared_ptr<NativeThreadFreeBSD> NativeThreadFreeBSDSP;

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} // namespace process_freebsd

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} // namespace lldb_private

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#endif // #ifndef liblldb_NativeThreadFreeBSD_H_

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