Package ghidra.pcode.emu.jit.analysis

Interface JitAllocationModel.VarHandler

All Known Subinterfaces:
JitAllocationModel.OneLocalVarHandler
All Known Implementing Classes:
JitAllocationModel.DoubleVarAlloc, JitAllocationModel.FloatVarAlloc, JitAllocationModel.IntVarAlloc, JitAllocationModel.LongVarAlloc, JitAllocationModel.MultiLocalVarHandler, JitAllocationModel.NoHandler
Enclosing class:
JitAllocationModel
public static interface JitAllocationModel.VarHandler
A handler that knows how to load and store variable values onto and from the JVM stack.

  • Method Details

    • type

      JitType type()
      Get the p-code type of the variable this handler handles.
      Returns:
      the type

    • generateInitCode

      void generateInitCode(JitCodeGenerator gen, org.objectweb.asm.MethodVisitor iv)
      Emit bytecode into the class constructor.
      Parameters:
      gen - the code generator
      iv - the visitor for the class constructor

    • generateDeclCode

      void generateDeclCode(JitCodeGenerator gen, org.objectweb.asm.Label start, org.objectweb.asm.Label end, org.objectweb.asm.MethodVisitor rv)
      If needed, emit bytecode at the top of the run method.
      Parameters:
      gen - the code generator
      start - a label at the top of the method
      end - a label at the end of the method
      rv - the visitor for the run method

    • generateLoadCode

      void generateLoadCode(JitCodeGenerator gen, JitType type, TypeConversions.Ext ext, org.objectweb.asm.MethodVisitor rv)
      Emit bytecode to load the varnode's value onto the JVM stack.
      Parameters:
      gen - the code generator
      type - the p-code type of the value expected on the JVM stack by the proceeding bytecode
      ext - the kind of extension to apply when adjusting from JVM size to varnode size
      rv - the visitor for the run method

    • generateStoreCode

      void generateStoreCode(JitCodeGenerator gen, JitType type, TypeConversions.Ext ext, org.objectweb.asm.MethodVisitor rv)
      Emit bytecode to load the varnode's value onto the JVM stack.
      Parameters:
      gen - the code generator
      type - the p-code type of the value produced on the JVM stack by the preceding bytecode
      ext - the kind of extension to apply when adjusting from varnode size to JVM size
      rv - the visitor for the run method