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package org.graalvm.compiler.asm.sparc;

import static jdk.vm.ci.sparc.SPARC.STACK_BIAS;
import static jdk.vm.ci.sparc.SPARC.fp;
import static jdk.vm.ci.sparc.SPARC.sp;
import jdk.vm.ci.code.Register;
import jdk.vm.ci.sparc.SPARC;

import org.graalvm.compiler.asm.AbstractAddress;

public class SPARCAddress extends AbstractAddress {

    private final Register base;
    private final Register index;
    private final int displacement;

    
Creates an SPARCAddress with given base register, no scaling and a given displacement.
Params:
  • base – the base register
  • displacement – the displacement
/** * Creates an {@link SPARCAddress} with given base register, no scaling and a given * displacement. * * @param base the base register * @param displacement the displacement */
public SPARCAddress(Register base, int displacement) { this.base = base; this.index = Register.None; this.displacement = displacement; }
Creates an SPARCAddress with given base register, no scaling and a given index.
Params:
  • base – the base register
  • index – the index register
/** * Creates an {@link SPARCAddress} with given base register, no scaling and a given index. * * @param base the base register * @param index the index register */
public SPARCAddress(Register base, Register index) { this.base = base; this.index = index; this.displacement = 0; } @Override public String toString() { StringBuilder s = new StringBuilder(); s.append("["); String sep = ""; if (!getBase().equals(Register.None)) { s.append(getBase()); sep = " + "; } if (!getIndex().equals(Register.None)) { s.append(sep).append(getIndex()); sep = " + "; } else { if (getDisplacement() < 0) { s.append(" - ").append(-getDisplacement()); } else if (getDisplacement() > 0) { s.append(sep).append(getDisplacement()); } } s.append("]"); return s.toString(); }
Returns:Base register that defines the start of the address computation. If not present, is denoted by Register.None.
/** * @return Base register that defines the start of the address computation. If not present, is * denoted by {@link Register#None}. */
public Register getBase() { return base; }
Returns:Index register, the value of which is added to getBase. If not present, is denoted by Register.None.
/** * @return Index register, the value of which is added to {@link #getBase}. If not present, is * denoted by {@link Register#None}. */
public Register getIndex() { return index; }
Returns:true if this address has an index register
/** * @return true if this address has an index register */
public boolean hasIndex() { return !getIndex().equals(Register.None); }
This method adds the stack-bias to the displacement if the base register is either SPARC.sp or SPARC.fp.
Returns:Optional additive displacement.
/** * This method adds the stack-bias to the displacement if the base register is either * {@link SPARC#sp} or {@link SPARC#fp}. * * @return Optional additive displacement. */
public int getDisplacement() { if (hasIndex()) { throw new InternalError("address has index register"); } // TODO Should we also hide the register save area size here? if (getBase().equals(sp) || getBase().equals(fp)) { return displacement + STACK_BIAS; } return displacement; } }