IInsnEmulator
| com.pnfsoftware.jeb.core.units.code.asm.simulator.IInsnEmulator<T extends com.pnfsoftware.jeb.core.units.code.IInstructionOperand> |
 Known Indirect Subclasses
InsnEmulator<T extends IInstructionOperand>
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Class Overview
High Level design for an instruction emulator: it indicates if the PC is updated (meaning a jump
will be done, see getBranchType() for jump type) and is able to compute the result of
the operation. Please note that the
#compute(long, int, IInstructionOperand[], IMachineContext) implementation is not
guaranteed, plus it can depends on context (register values, memory access).
Summary
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| enum | IInsnEmulator.BranchType | ||||||||||
| Public Methods | |||||||||||
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| abstract Long |
compute(byte[] code, long instructionAddress, int mode, T[] armOperands, IMachineContext context)
Compute the result of the instruction (ADD, SUB...).
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| abstract IInsnEmulator.BranchType |
getBranchType()
Return BranchType (JUMP or LINK).
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| abstract boolean |
isPCUpdated()
Indicate if the instruction can update the PC (by another address than the following one).
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Public Methods
public abstract Long compute (byte[] code, long instructionAddress, int mode, T[] armOperands, IMachineContext context)
Compute the result of the instruction (ADD, SUB...). When the context is not provided or has missing entries, this method will return null as result or raise a ProcessorException. If this operation is not implemented, an UnsupportedOperationException will be raised.
Throws
| ProcessorException |
|---|
public abstract IInsnEmulator.BranchType getBranchType ()
Return BranchType (JUMP or LINK). See later if more is needed.
public abstract boolean isPCUpdated ()
Indicate if the instruction can update the PC (by another address than the following one).