AMD64GuardedDevirtualSnippet.hpp

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#ifndef AMD64GUARDEDDEVIRTUALSNIPPET_INCL
#define AMD64GUARDEDDEVIRTUALSNIPPET_INCL

#include "x/codegen/GuardedDevirtualSnippet.hpp"

#include <stdint.h>
#include "il/SymbolReference.hpp"

namespace TR { class Block; }
namespace TR { class CodeGenerator; }
namespace TR { class LabelSymbol; }
namespace TR { class MethodSymbol; }
namespace TR { class Node; }
namespace TR { class Register; }

namespace TR {

class AMD64GuardedDevirtualSnippet : public TR::X86GuardedDevirtualSnippet
   {
   int32_t _argSize;

   uint8_t *loadArgumentsIfNecessary(TR::Node *callNode, uint8_t *cursor, bool calculateSizeOnly, int32_t *sizeOfArgumentFlushArea);

   private:
   TR::SymbolReference * _realMethodSymbolReference;

   public:

   AMD64GuardedDevirtualSnippet(TR::CodeGenerator   *cg,
                                TR::Node            *node,
                                TR::SymbolReference *realMethodSymRef,
                                TR::LabelSymbol      *restartlab,
                                TR::LabelSymbol      *snippetlab,
                                int32_t             vftoffset,
                                TR::Block           *currentBlock,
                                TR::Register        *classRegister,
                                int32_t             argSize):
      TR::X86GuardedDevirtualSnippet(cg, node, restartlab, snippetlab, vftoffset, currentBlock, classRegister),
      _argSize(argSize), _realMethodSymbolReference(realMethodSymRef) {}

   bool isLoadArgumentsNecessary(TR::MethodSymbol *methodSymbol);
   virtual uint8_t *emitSnippetBody();
   virtual uint32_t getLength(int32_t estimatedSnippetStart);
   virtual TR::SymbolReference* getRealMethodSymbolReference() { return _realMethodSymbolReference; }

   };

}

#endif