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 "jitcs_ids.h"
  16 #include <memory>
  17
  18 namespace jitcs {
  19 class MachineDumper;
  20 class IMachineInfo;
  21 struct VirtualRegister;
  22
  23 enum CallerCalleeStrategyId {
  24   CCS_Scratch,
  25   CCS_ByCaller,
  26   CCS_ByCallee,
  27 };
  28
  29 class CallingConvention {
  30 public:
  31   CallingConvention() = default;
  32   virtual ~CallingConvention() = default;
  33
  34 public:
  35   void dump(MachineDumper&) const;
  36
  37 public:
  38   virtual RefCounter<IMachineInfo> getMachineInfo() const = 0;
  39   virtual size_t getResultCount() const = 0;
  40   virtual size_t getParamCount() const = 0;
  41   virtual size_t getParamAreaSize() const = 0;
  42   virtual SpillSlotInfo getResultSpillSlotInfo(size_t r) const = 0;
  43   virtual RefOrNull<const VirtualRegister> getResultRegister(size_t r) const = 0;
  44   virtual SpillSlotInfo getParamSpillSlotInfo(size_t p) const = 0;
  45   virtual RefOrNull<const VirtualRegister> getParamRegister(size_t p) const = 0;
  46   virtual size_t getRequiredStackAlignment() const = 0;
  47   virtual size_t getRequiredStackAlignmentOffset() const = 0;
  48   virtual CallerCalleeStrategyId getStackCleaningStrategy() const = 0;
  49
  50   virtual FTSubType getSubType() const = 0;
  51   virtual FTTypeId getResultType(size_t r) const = 0;
  52   virtual FTTypeId getParamType(size_t p) const = 0;
  53
  54   virtual u32 getScratchResources(ResClassId) const = 0;
  55   virtual u32 getReservedResources(ResClassId) const = 0;
  56
  57 public:
  58   virtual void setTypeInfo(FTSubType,Slice<FTTypeId> res,Slice<FTTypeId> par) = 0;
  59   virtual void addResult(const VirtualRegister*, SpillSlotInfo) = 0;
  60   virtual void addParam(const VirtualRegister*, SpillSlotInfo) = 0;
  61   virtual void setStackAlignment(size_t align, size_t ofs) = 0;
  62   virtual void setParamAreaSize(size_t) = 0;
  63   virtual void setCleanStack(CallerCalleeStrategyId) = 0;
  64   virtual void setResClassCount(size_t resNo) = 0;
  65   virtual void setScratchResources(ResClassId, u32) = 0;
  66   virtual void setReservedResources(ResClassId, u32) = 0;
  67 };
  68
  69 } // end of namespace jitcs
  70
  71 #endif
  72 // _JITCS_CALLINGCONVENTION_H_