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 // C Includes
  14 // C++ Includes
  15 // Other libraries and framework includes
  16 // Project includes
  17 #include "lldb/lldb-private.h"
  18 #include "lldb/Target/ABI.h"
  19
  20 class ABISysV_mips :
  21     public lldb_private::ABI
  22 {
  23 public:
  24     ~ABISysV_mips() override = default;
  25
  26     size_t
  27     GetRedZoneSize() const override;
  28
  29     bool
  30     PrepareTrivialCall(lldb_private::Thread &thread,
  31                        lldb::addr_t sp,
  32                        lldb::addr_t functionAddress,
  33                        lldb::addr_t returnAddress,
  34                        llvm::ArrayRef<lldb::addr_t> args) const override;
  35
  36     bool
  37     GetArgumentValues(lldb_private::Thread &thread,
  38                       lldb_private::ValueList &values) const override;
  39
  40     lldb_private::Error
  41     SetReturnValueObject(lldb::StackFrameSP &frame_sp, lldb::ValueObjectSP &new_value) override;
  42
  43     lldb::ValueObjectSP
  44     GetReturnValueObjectImpl(lldb_private::Thread &thread,
  45                              lldb_private::CompilerType &type) const override;
  46
  47     bool
  48     CreateFunctionEntryUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override;
  49
  50     bool
  51     CreateDefaultUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override;
  52
  53     bool
  54     RegisterIsVolatile(const lldb_private::RegisterInfo *reg_info) override;
  55
  56     bool
  57     IsSoftFloat(uint32_t fp_flag) const;
  58
  59     bool
  60     CallFrameAddressIsValid(lldb::addr_t cfa) override
  61     {
  62         // Make sure the stack call frame addresses are 8 byte aligned
  63         if (cfa & (8ull - 1ull))
  64             return false;   // Not 8 byte aligned
  65         if (cfa == 0)
  66             return false;   // Zero is not a valid stack address
  67         return true;
  68     }
  69
  70     bool
  71     CodeAddressIsValid(lldb::addr_t pc) override
  72     {
  73         // Just make sure the address is a valid 32 bit address. Bit zero
  74         // might be set due to MicroMIPS function calls, so don't enforce alignment.
  75         return (pc <= UINT32_MAX);
  76     }
  77
  78     const lldb_private::RegisterInfo *
  79     GetRegisterInfoArray(uint32_t &count) override;
  80
  81     //------------------------------------------------------------------
  82     // Static Functions
  83     //------------------------------------------------------------------
  84
  85     static void
  86     Initialize();
  87
  88     static void
  89     Terminate();
  90
  91     static lldb::ABISP
  92     CreateInstance (const lldb_private::ArchSpec &arch);
  93
  94     static lldb_private::ConstString
  95     GetPluginNameStatic();
  96
  97     //------------------------------------------------------------------
  98     // PluginInterface protocol
  99     //------------------------------------------------------------------
 100
 101     lldb_private::ConstString
 102     GetPluginName() override;
 103
 104     uint32_t
 105     GetPluginVersion() override;
 106
 107 protected:
 108     void
 109     CreateRegisterMapIfNeeded ();
 110
 111     lldb::ValueObjectSP
 112     GetReturnValueObjectSimple(lldb_private::Thread &thread,
 113                                lldb_private::CompilerType &ast_type) const;
 114
 115     bool
 116     RegisterIsCalleeSaved (const lldb_private::RegisterInfo *reg_info);
 117
 118 private:
 119     ABISysV_mips() :
 120         lldb_private::ABI()
 121     {
 122          // Call CreateInstance instead.
 123     }
 124 };
 125
 126 #endif // liblldb_ABISysV_mips_h_