//===-- UnwindMacOSXFrameBackchain.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_UnwindMacOSXFrameBackchain_h_ #define lldb_UnwindMacOSXFrameBackchain_h_ #include #include "lldb/Target/Unwind.h" #include "lldb/lldb-private.h" class UnwindMacOSXFrameBackchain : public lldb_private::Unwind { public: UnwindMacOSXFrameBackchain(lldb_private::Thread &thread); ~UnwindMacOSXFrameBackchain() override = default; protected: void DoClear() override { m_cursors.clear(); } uint32_t DoGetFrameCount() override; bool DoGetFrameInfoAtIndex(uint32_t frame_idx, lldb::addr_t &cfa, lldb::addr_t &pc, bool &behaves_like_zeroth_frame) override; lldb::RegisterContextSP DoCreateRegisterContextForFrame(lldb_private::StackFrame *frame) override; friend class RegisterContextMacOSXFrameBackchain; struct Cursor { lldb::addr_t pc; // Program counter lldb::addr_t fp; // Frame pointer for us with backchain }; private: std::vector m_cursors; size_t GetStackFrameData_i386(const lldb_private::ExecutionContext &exe_ctx); size_t GetStackFrameData_x86_64(const lldb_private::ExecutionContext &exe_ctx); // For UnwindMacOSXFrameBackchain only DISALLOW_COPY_AND_ASSIGN(UnwindMacOSXFrameBackchain); }; #endif // lldb_UnwindMacOSXFrameBackchain_h_