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(* Title: HOL/MicroJava/JVM/JVMInstructions.thy
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ID: $Id$
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Author: Gerwin Klein
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Copyright 2000 Technische Universitaet Muenchen
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Instructions of the JVM
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*)
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JVMInstructions = JVMState +
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datatype
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instr = Load nat (* load from local variable *)
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| Store nat (* store into local variable *)
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| Bipush int (* push int *)
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| Aconst_null (* push null *)
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| New cname (* create object *)
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| Getfield vname cname (* Fetch field from object *)
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| Putfield vname cname (* Set field in object *)
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| Checkcast cname (* Check whether object is of given type *)
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| Invoke mname "(ty list)" (* inv. instance meth of an object *)
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| Return
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| Pop
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| Dup
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| Dup_x1
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| Dup_x2
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| Swap
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| IAdd
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| Goto int
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| Ifcmpeq int (* Branch if int/ref comparison succeeds *)
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types
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bytecode = "instr list"
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jvm_prog = "(nat \\<times> bytecode) prog"
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end
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