lldb/source/Plugins/ABI/ARC/ABISysV_arc.h

   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 &reg_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_