include/jitcs_callingconvention.h

   1 //===-- jitcs_callconv.h - --------------------------------------*- C++ -*-===//
   2 //
   3 //
   4 //===----------------------------------------------------------------------===//
   5
   6 #ifndef _JITCS_CALLINGCONVENTION_H_
   7 #define _JITCS_CALLINGCONVENTION_H_
   8
   9 #include "jitcs_adt_ref.h"
  10 #include "jitcs_adt_refcounter.h"
  11 #include "jitcs_adt_slice.h"
  12 #include "jitcs_base.h"
  13 #include "jitcs_fnctypeinfo.h"
  14 #include "jitcs_spillslotinfo.h"
  15 #include <memory>
  16
  17 namespace jitcs {
  18 class MachineDumper;
  19 class IMachineInfo;
  20 struct VirtualRegister;
  21
  22 enum CallerCalleeStrategyId {
  23   CCS_Scratch,
  24   CCS_ByCaller,
  25   CCS_ByCallee,
  26 };
  27
  28 class CallingConvention {
  29 public:
  30   CallingConvention() = default;
  31   virtual ~CallingConvention() = default;
  32
  33 public:
  34   void dump(MachineDumper&) const;
  35
  36 public:
  37   virtual RefCounter<IMachineInfo> getMachineInfo() const = 0;
  38   virtual size_t getResultCount() const = 0;
  39   virtual size_t getParamCount() const = 0;
  40   virtual size_t getParamAreaSize() const = 0;
  41   virtual SpillSlotInfo getResultSpillSlotInfo(size_t r) const = 0;
  42   virtual RefOrNull<const VirtualRegister> getResultRegister(size_t r) const = 0;
  43   virtual SpillSlotInfo getParamSpillSlotInfo(size_t p) const = 0;
  44   virtual RefOrNull<const VirtualRegister> getParamRegister(size_t p) const = 0;
  45   virtual size_t getRequiredStackAlignment() const = 0;
  46   virtual size_t getRequiredStackAlignmentOffset() const = 0;
  47   virtual CallerCalleeStrategyId getStackCleaningStrategy() const = 0;
  48
  49   virtual FTSubType getSubType() const = 0;
  50   virtual FTTypeId getResultType(size_t r) const = 0;
  51   virtual FTTypeId getParamType(size_t p) const = 0;
  52
  53 public:
  54   virtual void setTypeInfo(FTSubType,Slice<FTTypeId> res,Slice<FTTypeId> par) = 0;
  55   virtual void addResult(const VirtualRegister*, SpillSlotInfo) = 0;
  56   virtual void addParam(const VirtualRegister*, SpillSlotInfo) = 0;
  57   virtual void setStackAlignment(size_t align, size_t ofs) = 0;
  58   virtual void setParamAreaSize(size_t) = 0;
  59   virtual void setCleanStack(CallerCalleeStrategyId) = 0;
  60   //virtual void initSaveResource(uint resNo, CallerCalleeStrategyId) = 0;
  61   //virtual void changeSaveResource(uint res, CallerCalleeStrategyId) = 0;
  62   //virtual void setSaveResource(CallerCalleeStrategyId) = 0;
  63   //virtual void finalize() = 0;
  64 };
  65
  66 } // end of namespace jitcs
  67
  68 #endif
  69 // _JITCS_CALLINGCONVENTION_H_