6179c0eb0d
Summary: This patch adds support of watchpoints to the old `ProcessWindows` plugin. The `ProcessWindows` plugin uses the `RegisterContext` to set and reset watchpoints. The `RegisterContext` has some interface to access watchpoints, but it is very limited (e.g. it is impossible to retrieve the last triggered watchpoint with it), that's why I have implemented a slightly different interface in the `RegisterContextWindows`. Moreover, I have made the `ProcessWindows` plugin responsible for search of a vacant watchpoint slot, because watchpoints exist per-process (not per-thread), then we can place the same watchpoint in the same slot in different threads. With this scheme threads don't need to have their own watchpoint lists, and it simplifies identifying of the last triggered watchpoint. Reviewers: asmith, stella.stamenova, amccarth Reviewed By: amccarth Subscribers: labath, zturner, leonid.mashinskiy, abidh, JDevlieghere, lldb-commits Tags: #lldb Differential Revision: https://reviews.llvm.org/D67168 llvm-svn: 371166
121 lines
4.4 KiB
C++
121 lines
4.4 KiB
C++
//===-- ProcessWindows.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_Plugins_Process_Windows_Common_ProcessWindows_H_
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#define liblldb_Plugins_Process_Windows_Common_ProcessWindows_H_
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#include "lldb/Target/Process.h"
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#include "lldb/Utility/Status.h"
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#include "lldb/lldb-forward.h"
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#include "Plugins/DynamicLoader/Windows-DYLD/DynamicLoaderWindowsDYLD.h"
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#include "ProcessDebugger.h"
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namespace lldb_private {
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class HostProcess;
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class ProcessWindows : public Process, public ProcessDebugger {
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public:
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// Static functions.
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static lldb::ProcessSP CreateInstance(lldb::TargetSP target_sp,
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lldb::ListenerSP listener_sp,
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const FileSpec *);
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static void Initialize();
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static void Terminate();
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static lldb_private::ConstString GetPluginNameStatic();
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static const char *GetPluginDescriptionStatic();
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// Constructors and destructors
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ProcessWindows(lldb::TargetSP target_sp, lldb::ListenerSP listener_sp);
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~ProcessWindows();
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size_t GetSTDOUT(char *buf, size_t buf_size, Status &error) override;
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size_t GetSTDERR(char *buf, size_t buf_size, Status &error) override;
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size_t PutSTDIN(const char *buf, size_t buf_size, Status &error) override;
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// lldb_private::Process overrides
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ConstString GetPluginName() override;
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uint32_t GetPluginVersion() override;
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Status EnableBreakpointSite(BreakpointSite *bp_site) override;
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Status DisableBreakpointSite(BreakpointSite *bp_site) override;
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Status DoDetach(bool keep_stopped) override;
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Status DoLaunch(Module *exe_module, ProcessLaunchInfo &launch_info) override;
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Status DoAttachToProcessWithID(
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lldb::pid_t pid,
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const lldb_private::ProcessAttachInfo &attach_info) override;
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Status DoResume() override;
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Status DoDestroy() override;
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Status DoHalt(bool &caused_stop) override;
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void DidLaunch() override;
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void DidAttach(lldb_private::ArchSpec &arch_spec) override;
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void RefreshStateAfterStop() override;
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bool CanDebug(lldb::TargetSP target_sp,
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bool plugin_specified_by_name) override;
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bool DestroyRequiresHalt() override { return false; }
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bool UpdateThreadList(ThreadList &old_thread_list,
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ThreadList &new_thread_list) override;
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bool IsAlive() override;
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size_t DoReadMemory(lldb::addr_t vm_addr, void *buf, size_t size,
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Status &error) override;
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size_t DoWriteMemory(lldb::addr_t vm_addr, const void *buf, size_t size,
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Status &error) override;
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lldb::addr_t DoAllocateMemory(size_t size, uint32_t permissions,
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Status &error) override;
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Status DoDeallocateMemory(lldb::addr_t ptr) override;
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Status GetMemoryRegionInfo(lldb::addr_t vm_addr,
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MemoryRegionInfo &info) override;
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lldb::addr_t GetImageInfoAddress() override;
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DynamicLoaderWindowsDYLD *GetDynamicLoader() override;
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// IDebugDelegate overrides.
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void OnExitProcess(uint32_t exit_code) override;
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void OnDebuggerConnected(lldb::addr_t image_base) override;
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ExceptionResult OnDebugException(bool first_chance,
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const ExceptionRecord &record) override;
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void OnCreateThread(const HostThread &thread) override;
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void OnExitThread(lldb::tid_t thread_id, uint32_t exit_code) override;
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void OnLoadDll(const ModuleSpec &module_spec,
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lldb::addr_t module_addr) override;
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void OnUnloadDll(lldb::addr_t module_addr) override;
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void OnDebugString(const std::string &string) override;
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void OnDebuggerError(const Status &error, uint32_t type) override;
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Status GetWatchpointSupportInfo(uint32_t &num) override;
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Status GetWatchpointSupportInfo(uint32_t &num, bool &after) override;
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Status EnableWatchpoint(Watchpoint *wp, bool notify = true) override;
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Status DisableWatchpoint(Watchpoint *wp, bool notify = true) override;
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private:
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struct WatchpointInfo {
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uint32_t slot_id;
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lldb::addr_t address;
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uint32_t size;
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bool read;
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bool write;
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};
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std::map<lldb::break_id_t, WatchpointInfo> m_watchpoints;
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std::vector<lldb::break_id_t> m_watchpoint_ids;
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};
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} // namespace lldb_private
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#endif // liblldb_Plugins_Process_Windows_Common_ProcessWindows_H_
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