| //===-- SectionLoadHistory.h ------------------------------------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLDB_TARGET_SECTIONLOADHISTORY_H |
| #define LLDB_TARGET_SECTIONLOADHISTORY_H |
| |
| #include <map> |
| #include <mutex> |
| |
| #include "lldb/lldb-public.h" |
| |
| namespace lldb_private { |
| |
| class SectionLoadHistory { |
| public: |
| enum : unsigned { |
| // Pass eStopIDNow to any function that takes a stop ID to get the current |
| // value. |
| eStopIDNow = UINT32_MAX |
| }; |
| // Constructors and Destructors |
| SectionLoadHistory() : m_stop_id_to_section_load_list(), m_mutex() {} |
| |
| ~SectionLoadHistory() { |
| // Call clear since this takes a lock and clears the section load list in |
| // case another thread is currently using this section load list |
| Clear(); |
| } |
| |
| SectionLoadList &GetCurrentSectionLoadList(); |
| |
| bool IsEmpty() const; |
| |
| void Clear(); |
| |
| uint32_t GetLastStopID() const; |
| |
| // Get the section load address given a process stop ID |
| lldb::addr_t GetSectionLoadAddress(uint32_t stop_id, |
| const lldb::SectionSP §ion_sp); |
| |
| bool ResolveLoadAddress(uint32_t stop_id, lldb::addr_t load_addr, |
| Address &so_addr); |
| |
| bool SetSectionLoadAddress(uint32_t stop_id, |
| const lldb::SectionSP §ion_sp, |
| lldb::addr_t load_addr, |
| bool warn_multiple = false); |
| |
| // The old load address should be specified when unloading to ensure we get |
| // the correct instance of the section as a shared library could be loaded at |
| // more than one location. |
| bool SetSectionUnloaded(uint32_t stop_id, const lldb::SectionSP §ion_sp, |
| lldb::addr_t load_addr); |
| |
| // Unload all instances of a section. This function can be used on systems |
| // that don't support multiple copies of the same shared library to be loaded |
| // at the same time. |
| size_t SetSectionUnloaded(uint32_t stop_id, |
| const lldb::SectionSP §ion_sp); |
| |
| void Dump(Stream &s, Target *target); |
| |
| protected: |
| SectionLoadList *GetSectionLoadListForStopID(uint32_t stop_id, |
| bool read_only); |
| |
| typedef std::map<uint32_t, lldb::SectionLoadListSP> StopIDToSectionLoadList; |
| StopIDToSectionLoadList m_stop_id_to_section_load_list; |
| mutable std::recursive_mutex m_mutex; |
| |
| private: |
| SectionLoadHistory(const SectionLoadHistory &) = delete; |
| const SectionLoadHistory &operator=(const SectionLoadHistory &) = delete; |
| }; |
| |
| } // namespace lldb_private |
| |
| #endif // LLDB_TARGET_SECTIONLOADHISTORY_H |