edu.polytechnique.xvm.asm.opcodes

Class ALLOC

java.lang.Object

edu.polytechnique.xvm.asm.interfaces.AsmInstruction

edu.polytechnique.xvm.asm.opcodes.ALLOC

public final class ALLOC
extends AsmInstruction

Allocate a block on the heap

• Stack before: x ; S (where x is an integer)
• Stack after: a ; S (where a is the address of a new block of memory of size x words)
• PC: +1
• SP: unchanged
• FP: unchanged
• R: unchanged
• Exceptions:
  • Stack underflow: Stack is empty
  • Int mismatch: Top stack entry is not an integer

Constructor Summary

Constructors

Constructor and Description
ALLOC()

Method Summary

Modifier and Type	Method and Description
<P,R> R	accept(AsmVisitor<P,R> visitor, P arg)

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

getName, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ALLOC

public ALLOC()

Method Detail

accept

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

Specified by:

accept in class AsmInstruction