contrib/llvm/tools/lldb/source/Plugins/ABI/SysV-hexagon/ABISysV_hexagon.h

   1 //===-- ABISysV_hexagon.h ----------------------------------------*- C++
   2 //-*-===//
   3 //
   4 //                     The LLVM Compiler Infrastructure
   5 //
   6 // This file is distributed under the University of Illinois Open Source
   7 // License. See LICENSE.TXT for details.
   8 //
   9 //===----------------------------------------------------------------------===//
  10
  11 #ifndef liblldb_ABISysV_hexagon_h_
  12 #define liblldb_ABISysV_hexagon_h_
  13
  14 #include "lldb/Target/ABI.h"
  15 #include "lldb/lldb-private.h"
  16
  17 class ABISysV_hexagon : public lldb_private::ABI {
  18 public:
  19   ~ABISysV_hexagon() override = default;
  20
  21   size_t GetRedZoneSize() const override;
  22
  23   bool PrepareTrivialCall(lldb_private::Thread &thread, lldb::addr_t sp,
  24                           lldb::addr_t functionAddress,
  25                           lldb::addr_t returnAddress,
  26                           llvm::ArrayRef<lldb::addr_t> args) const override;
  27
  28   // special thread plan for GDB style non-jit function calls
  29   bool
  30   PrepareTrivialCall(lldb_private::Thread &thread, lldb::addr_t sp,
  31                      lldb::addr_t functionAddress, lldb::addr_t returnAddress,
  32                      llvm::Type &prototype,
  33                      llvm::ArrayRef<ABI::CallArgument> args) const override;
  34
  35   bool GetArgumentValues(lldb_private::Thread &thread,
  36                          lldb_private::ValueList &values) const override;
  37
  38   lldb_private::Status
  39   SetReturnValueObject(lldb::StackFrameSP &frame_sp,
  40                        lldb::ValueObjectSP &new_value) override;
  41
  42   lldb::ValueObjectSP
  43   GetReturnValueObjectImpl(lldb_private::Thread &thread,
  44                            lldb_private::CompilerType &type) const override;
  45
  46   // specialized to work with llvm IR types
  47   lldb::ValueObjectSP GetReturnValueObjectImpl(lldb_private::Thread &thread,
  48                                                llvm::Type &type) const override;
  49
  50   bool
  51   CreateFunctionEntryUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override;
  52
  53   bool CreateDefaultUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override;
  54
  55   bool RegisterIsVolatile(const lldb_private::RegisterInfo *reg_info) override;
  56
  57   bool CallFrameAddressIsValid(lldb::addr_t cfa) override {
  58     // Make sure the stack call frame addresses are 8 byte aligned
  59     if (cfa & 0x07)
  60       return false; // Not 8 byte aligned
  61     if (cfa == 0)
  62       return false; // Zero is not a valid stack address
  63     return true;
  64   }
  65
  66   bool CodeAddressIsValid(lldb::addr_t pc) override {
  67     // We have a 64 bit address space, so anything is valid as opcodes
  68     // aren't fixed width...
  69     return true;
  70   }
  71
  72   const lldb_private::RegisterInfo *
  73   GetRegisterInfoArray(uint32_t &count) override;
  74
  75   //------------------------------------------------------------------
  76   // Static Functions
  77   //------------------------------------------------------------------
  78
  79   static void Initialize();
  80
  81   static void Terminate();
  82
  83   static lldb::ABISP CreateInstance(lldb::ProcessSP process_sp, const lldb_private::ArchSpec &arch);
  84
  85   static lldb_private::ConstString GetPluginNameStatic();
  86
  87   //------------------------------------------------------------------
  88   // PluginInterface protocol
  89   //------------------------------------------------------------------
  90
  91   lldb_private::ConstString GetPluginName() override;
  92
  93   uint32_t GetPluginVersion() override;
  94
  95 protected:
  96   void CreateRegisterMapIfNeeded();
  97
  98   lldb::ValueObjectSP
  99   GetReturnValueObjectSimple(lldb_private::Thread &thread,
 100                              lldb_private::CompilerType &ast_type) const;
 101
 102   bool RegisterIsCalleeSaved(const lldb_private::RegisterInfo *reg_info);
 103
 104 private:
 105   ABISysV_hexagon(lldb::ProcessSP process_sp) : lldb_private::ABI(process_sp) {
 106     // Call CreateInstance instead.
 107   }
 108 };
 109
 110 #endif // liblldb_ABISysV_hexagon_h_