contrib/llvm/tools/lldb/source/Plugins/ABI/SysV-s390x/ABISysV_s390x.h

   1 //===-- ABISysV_s390x.h -----------------------------------------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #ifndef liblldb_ABISysV_s390x_h_
  11 #define liblldb_ABISysV_s390x_h_
  12
  13 #include "lldb/Target/ABI.h"
  14 #include "lldb/lldb-private.h"
  15
  16 class ABISysV_s390x : public lldb_private::ABI {
  17 public:
  18   ~ABISysV_s390x() override = default;
  19
  20   size_t GetRedZoneSize() const override;
  21
  22   bool PrepareTrivialCall(lldb_private::Thread &thread, lldb::addr_t sp,
  23                           lldb::addr_t functionAddress,
  24                           lldb::addr_t returnAddress,
  25                           llvm::ArrayRef<lldb::addr_t> args) const override;
  26
  27   bool GetArgumentValues(lldb_private::Thread &thread,
  28                          lldb_private::ValueList &values) const override;
  29
  30   lldb_private::Status
  31   SetReturnValueObject(lldb::StackFrameSP &frame_sp,
  32                        lldb::ValueObjectSP &new_value) override;
  33
  34   lldb::ValueObjectSP
  35   GetReturnValueObjectImpl(lldb_private::Thread &thread,
  36                            lldb_private::CompilerType &type) const override;
  37
  38   bool
  39   CreateFunctionEntryUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override;
  40
  41   bool CreateDefaultUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override;
  42
  43   bool RegisterIsVolatile(const lldb_private::RegisterInfo *reg_info) override;
  44
  45   bool GetFallbackRegisterLocation(
  46       const lldb_private::RegisterInfo *reg_info,
  47       lldb_private::UnwindPlan::Row::RegisterLocation &unwind_regloc) override;
  48
  49   bool CallFrameAddressIsValid(lldb::addr_t cfa) override {
  50     // Make sure the stack call frame addresses are 8 byte aligned
  51     if (cfa & (8ull - 1ull))
  52       return false; // Not 8 byte aligned
  53     if (cfa == 0)
  54       return false; // Zero is not a valid stack address
  55     return true;
  56   }
  57
  58   bool CodeAddressIsValid(lldb::addr_t pc) override {
  59     // Code addressed must be 2 byte aligned
  60     return (pc & 1ull) == 0;
  61   }
  62
  63   const lldb_private::RegisterInfo *
  64   GetRegisterInfoArray(uint32_t &count) override;
  65
  66   //------------------------------------------------------------------
  67   // Static Functions
  68   //------------------------------------------------------------------
  69
  70   static void Initialize();
  71
  72   static void Terminate();
  73
  74   static lldb::ABISP CreateInstance(lldb::ProcessSP process_sp, const lldb_private::ArchSpec &arch);
  75
  76   static lldb_private::ConstString GetPluginNameStatic();
  77
  78   //------------------------------------------------------------------
  79   // PluginInterface protocol
  80   //------------------------------------------------------------------
  81
  82   lldb_private::ConstString GetPluginName() override;
  83
  84   uint32_t GetPluginVersion() override;
  85
  86 protected:
  87   void CreateRegisterMapIfNeeded();
  88
  89   lldb::ValueObjectSP
  90   GetReturnValueObjectSimple(lldb_private::Thread &thread,
  91                              lldb_private::CompilerType &ast_type) const;
  92
  93   bool RegisterIsCalleeSaved(const lldb_private::RegisterInfo *reg_info);
  94
  95 private:
  96   ABISysV_s390x(lldb::ProcessSP process_sp) : lldb_private::ABI(process_sp) {
  97     // Call CreateInstance instead.
  98   }
  99 };
 100
 101 #endif // liblldb_ABISysV_s390x_h_