contrib/llvm/tools/lldb/source/Plugins/ABI/SysV-mips/ABISysV_mips.h

   1 //===-- ABISysV_mips.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_mips_h_
  11 #define liblldb_ABISysV_mips_h_
  12
  13 #include "lldb/Target/ABI.h"
  14 #include "lldb/lldb-private.h"
  15
  16 class ABISysV_mips : public lldb_private::ABI {
  17 public:
  18   ~ABISysV_mips() 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 IsSoftFloat(uint32_t fp_flag) const;
  46
  47   bool CallFrameAddressIsValid(lldb::addr_t cfa) override {
  48     // Make sure the stack call frame addresses are 8 byte aligned
  49     if (cfa & (8ull - 1ull))
  50       return false; // Not 8 byte aligned
  51     if (cfa == 0)
  52       return false; // Zero is not a valid stack address
  53     return true;
  54   }
  55
  56   bool CodeAddressIsValid(lldb::addr_t pc) override {
  57     // Just make sure the address is a valid 32 bit address. Bit zero
  58     // might be set due to MicroMIPS function calls, so don't enforce alignment.
  59     return (pc <= UINT32_MAX);
  60   }
  61
  62   const lldb_private::RegisterInfo *
  63   GetRegisterInfoArray(uint32_t &count) override;
  64
  65   //------------------------------------------------------------------
  66   // Static Functions
  67   //------------------------------------------------------------------
  68
  69   static void Initialize();
  70
  71   static void Terminate();
  72
  73   static lldb::ABISP CreateInstance(lldb::ProcessSP process_sp, const lldb_private::ArchSpec &arch);
  74
  75   static lldb_private::ConstString GetPluginNameStatic();
  76
  77   //------------------------------------------------------------------
  78   // PluginInterface protocol
  79   //------------------------------------------------------------------
  80
  81   lldb_private::ConstString GetPluginName() override;
  82
  83   uint32_t GetPluginVersion() override;
  84
  85 protected:
  86   void CreateRegisterMapIfNeeded();
  87
  88   lldb::ValueObjectSP
  89   GetReturnValueObjectSimple(lldb_private::Thread &thread,
  90                              lldb_private::CompilerType &ast_type) const;
  91
  92   bool RegisterIsCalleeSaved(const lldb_private::RegisterInfo *reg_info);
  93
  94 private:
  95   ABISysV_mips(lldb::ProcessSP process_sp) : lldb_private::ABI(process_sp) {
  96     // Call CreateInstance instead.
  97   }
  98 };
  99
 100 #endif // liblldb_ABISysV_mips_h_