edu.polytechnique.xvm.asm.opcodes

Class CREAD

java.lang.Object

edu.polytechnique.xvm.asm.interfaces.AsmInstruction

edu.polytechnique.xvm.asm.opcodes.CREAD

public final class CREAD
extends AsmInstruction

Read from the heap (computed read)

• Stack before: o ; a ; S
• Stack after: heap[a][o] ; S
• PC: +1
• SP: -1
• FP: unchanged
• R: unchanged
• Exceptions:
  • Stack underflow: the stack has fewer than two elements
  • Int mismatch: the word o is not an integer
  • Pointer mismatch: the word a is not a heap address
  • Invalid memory access: the address a is invalid or a is not a valid offset into the block at a

See Also:

CWRITE, READ, FETCH, RFR

Constructor Summary

Constructors

Constructor and Description
CREAD()

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

CREAD

public CREAD()

Method Detail

accept

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

Specified by:

accept in class AsmInstruction