edu.polytechnique.xvm.asm.opcodes

Class WFR

java.lang.Object

edu.polytechnique.xvm.asm.interfaces.AsmInstruction

edu.polytechnique.xvm.asm.opcodes.WFR

public final class WFR
extends AsmInstruction

Pop the stack and write into a stack entry relative to FP

• Stack before: w0 ; w1 ; ... ; wSP-1
• Stack after: w1 ; ... ; wSP-1 with wSP-1-(FP+1) changed to w0. Note that it must be that 0 ≤ FP + i ≤ SP - 1 or one of the stack exceptions will be triggered (see below).
• PC: +1
• SP: -1
• FP: unchanged
• R: unchanged
• Exceptions:
  • Stack underflow: SP == 0 or i < -FP
  • Invalid stack access: i > SP - FP - 1

See Also:

RFR

Constructor Summary

Constructors

Constructor and Description
WFR(int offset)

Method Summary

Modifier and Type	Method and Description
<P,R> R	accept(AsmVisitor<P,R> visitor, P arg)
int	getOffset()
java.lang.String	toString()

Methods inherited from class edu.polytechnique.xvm.asm.interfaces.AsmInstruction

getName

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

WFR

public WFR(int offset)

Method Detail

getOffset

public int getOffset()

accept

public <P,R> R accept(AsmVisitor<P,R> visitor,
                      P arg)

Specified by:

accept in class AsmInstruction

toString

public java.lang.String toString()

Overrides:

toString in class AsmInstruction