d970d4d4aa
NetBSD ptrace interface does not populate watchpoints to newly-created threads. Solve this via copying the watchpoints from the current thread when new thread is reported via TRAP_LWP. Add a test that verifies that when the user does not have permissions to set watchpoints on NetBSD, the 'watchpoint set' errors out gracefully and thread monitoring does not crash on being unable to copy watchpoints to new threads. Differential Revision: https://reviews.llvm.org/D70023
84 lines
2.4 KiB
C++
84 lines
2.4 KiB
C++
//===-- NativeThreadNetBSD.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_NativeThreadNetBSD_H_
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#define liblldb_NativeThreadNetBSD_H_
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#include "lldb/Host/common/NativeThreadProtocol.h"
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#include "Plugins/Process/NetBSD/NativeRegisterContextNetBSD.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_netbsd {
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class NativeProcessNetBSD;
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class NativeThreadNetBSD : public NativeThreadProtocol {
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friend class NativeProcessNetBSD;
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public:
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NativeThreadNetBSD(NativeProcessNetBSD &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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NativeRegisterContextNetBSD &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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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 SetStoppedWithNoReason();
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void SetStopped();
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void SetRunning();
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void SetStepping();
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Status CopyWatchpointsFrom(NativeThreadNetBSD& 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<NativeRegisterContextNetBSD> 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<NativeThreadNetBSD> NativeThreadNetBSDSP;
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} // namespace process_netbsd
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} // namespace lldb_private
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#endif // #ifndef liblldb_NativeThreadNetBSD_H_
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