1 //===-- ABISysV_arc.h -------------------------------------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef liblldb_ABISysV_arc_h_ 10 #define liblldb_ABISysV_arc_h_ 11 12 // Other libraries and framework includes 13 #include <optional> 14 15 // Project includes 16 #include "lldb/Target/ABI.h" 17 #include "lldb/lldb-private.h" 18 19 class ABISysV_arc : public lldb_private::RegInfoBasedABI { 20 public: 21 ~ABISysV_arc() override = default; 22 23 size_t GetRedZoneSize() const override; 24 25 bool PrepareTrivialCall(lldb_private::Thread &thread, lldb::addr_t sp, 26 lldb::addr_t functionAddress, 27 lldb::addr_t returnAddress, 28 llvm::ArrayRef<lldb::addr_t> args) const override; 29 30 // Special thread plan for GDB style non-jit function calls. 31 bool 32 PrepareTrivialCall(lldb_private::Thread &thread, lldb::addr_t sp, 33 lldb::addr_t functionAddress, lldb::addr_t returnAddress, 34 llvm::Type &prototype, 35 llvm::ArrayRef<ABI::CallArgument> args) const override; 36 37 bool GetArgumentValues(lldb_private::Thread &thread, 38 lldb_private::ValueList &values) const override; 39 40 lldb_private::Status 41 SetReturnValueObject(lldb::StackFrameSP &frame_sp, 42 lldb::ValueObjectSP &new_value) override; 43 44 lldb::ValueObjectSP 45 GetReturnValueObjectImpl(lldb_private::Thread &thread, 46 lldb_private::CompilerType &type) const override; 47 48 // Specialized to work with llvm IR types. 49 lldb::ValueObjectSP GetReturnValueObjectImpl(lldb_private::Thread &thread, 50 llvm::Type &type) const override; 51 52 bool 53 CreateFunctionEntryUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override; 54 55 bool CreateDefaultUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override; 56 57 bool RegisterIsVolatile(const lldb_private::RegisterInfo *reg_info) override; 58 59 bool CallFrameAddressIsValid(lldb::addr_t cfa) override { 60 // Stack call frame address must be 4 byte aligned. 61 return (cfa & 0x3ull) == 0; 62 } 63 64 bool CodeAddressIsValid(lldb::addr_t pc) override { 65 // Code addresse must be 2 byte aligned. 66 return (pc & 1ull) == 0; 67 } 68 69 const lldb_private::RegisterInfo * 70 GetRegisterInfoArray(uint32_t &count) override; 71 72 //------------------------------------------------------------------ 73 // Static Functions 74 //------------------------------------------------------------------ 75 76 static void Initialize(); 77 78 static void Terminate(); 79 80 static lldb::ABISP CreateInstance(lldb::ProcessSP process_sp, 81 const lldb_private::ArchSpec &arch); 82 83 static llvm::StringRef GetPluginNameStatic() { return "sysv-arc"; } 84 85 //------------------------------------------------------------------ 86 // PluginInterface protocol 87 //------------------------------------------------------------------ 88 89 llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); } 90 91 private: 92 lldb::ValueObjectSP 93 GetReturnValueObjectSimple(lldb_private::Thread &thread, 94 lldb_private::CompilerType &ast_type) const; 95 96 bool IsRegisterFileReduced(lldb_private::RegisterContext ®_ctx) const; 97 98 using lldb_private::RegInfoBasedABI::RegInfoBasedABI; // Call CreateInstance instead. 99 100 using RegisterFileFlag = std::optional<bool>; 101 mutable RegisterFileFlag m_is_reg_file_reduced; 102 }; 103 104 #endif // liblldb_ABISysV_arc_h_ 105