forked from OSchip/llvm-project
118 lines
3.5 KiB
C++
118 lines
3.5 KiB
C++
//===-- NativeThreadLinux.h ----------------------------------- -*- 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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#ifndef liblldb_NativeThreadLinux_H_
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#define liblldb_NativeThreadLinux_H_
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#include "lldb/Host/common/NativeThreadProtocol.h"
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#include "lldb/lldb-private-forward.h"
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#include <sched.h>
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#include <map>
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#include <memory>
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#include <string>
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namespace lldb_private {
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namespace process_linux {
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class NativeProcessLinux;
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class NativeThreadLinux : public NativeThreadProtocol {
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friend class NativeProcessLinux;
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public:
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NativeThreadLinux(NativeProcessLinux *process, lldb::tid_t tid);
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// ---------------------------------------------------------------------
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// NativeThreadProtocol Interface
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// ---------------------------------------------------------------------
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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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NativeRegisterContextSP GetRegisterContext() override;
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Error SetWatchpoint(lldb::addr_t addr, size_t size, uint32_t watch_flags,
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bool hardware) override;
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Error RemoveWatchpoint(lldb::addr_t addr) override;
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private:
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// ---------------------------------------------------------------------
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// Interface for friend classes
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// ---------------------------------------------------------------------
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/// Resumes the thread. If @p signo is anything but
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/// LLDB_INVALID_SIGNAL_NUMBER, deliver that signal to the thread.
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Error Resume(uint32_t signo);
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/// Single steps the thread. If @p signo is anything but
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/// LLDB_INVALID_SIGNAL_NUMBER, deliver that signal to the thread.
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Error SingleStep(uint32_t signo);
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void SetStoppedBySignal(uint32_t signo, const siginfo_t *info = nullptr);
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/// Return true if the thread is stopped.
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/// If stopped by a signal, indicate the signo in the signo argument.
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/// Otherwise, return LLDB_INVALID_SIGNAL_NUMBER.
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bool IsStopped(int *signo);
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void SetStoppedByExec();
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void SetStoppedByBreakpoint();
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void SetStoppedByWatchpoint(uint32_t wp_index);
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bool IsStoppedAtBreakpoint();
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bool IsStoppedAtWatchpoint();
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void SetStoppedByTrace();
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void SetStoppedWithNoReason();
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void SetExited();
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Error RequestStop();
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// ---------------------------------------------------------------------
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// Private interface
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// ---------------------------------------------------------------------
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void MaybeLogStateChange(lldb::StateType new_state);
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NativeProcessLinux &GetProcess();
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void SetStopped();
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inline void MaybePrepareSingleStepWorkaround();
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inline void MaybeCleanupSingleStepWorkaround();
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// ---------------------------------------------------------------------
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// Member Variables
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// ---------------------------------------------------------------------
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lldb::StateType m_state;
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ThreadStopInfo m_stop_info;
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NativeRegisterContextSP m_reg_context_sp;
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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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cpu_set_t m_original_cpu_set; // For single-step workaround.
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};
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typedef std::shared_ptr<NativeThreadLinux> NativeThreadLinuxSP;
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} // namespace process_linux
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} // namespace lldb_private
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#endif // #ifndef liblldb_NativeThreadLinux_H_
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