Package jminusminus

Class NPhysicalRegister

java.lang.Object
jminusminus.NRegister
jminusminus.NPhysicalRegister
class NPhysicalRegister extends NRegister
Representation for a physical register.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final int
    A0
    Argument 1.
    static final int
    A1
    Argument 2.
    static final int
    A2
    Argument 3.
    static final int
    A3
    Argument 4.
    static final int
    AT
    Reserved for assembler.
    static final int
    FP
    Frame pointer.
    static final int
    GP
    Pointer to global area.
    static final int
    K0
    Reserved for OS kernel.
    static final int
    K1
    Reserved for OS kernel.
    static int
    MAX_COUNT
    Maximum number of physical registers used for allocation, starting at T0.
    static final int
    RA
    Return address (used by function call).
    static final NPhysicalRegister[]
    regInfo
    Maps register number to the register's representation.
    static final int
    S0
    Temporary (preserved across call).
    static final int
    S1
    Temporary (preserved across call).
    static final int
    S2
    Temporary (preserved across call).
    static final int
    S3
    Temporary (preserved across call).
    static final int
    S4
    Temporary (preserved across call).
    static final int
    S5
    Temporary (preserved across call).
    static final int
    S6
    Temporary (preserved across call).
    static final int
    S7
    Temporary (preserved across call).
    static final int
    SP
    Stack pointer.
    static final int
    T0
    Temporary (not preserved across call).
    static final int
    T1
    Temporary (not preserved across call).
    static final int
    T2
    Temporary (not preserved across call).
    static final int
    T3
    Temporary (not preserved across call).
    static final int
    T4
    Temporary (not preserved across call).
    static final int
    T5
    Temporary (not preserved across call).
    static final int
    T6
    Temporary (not preserved across call).
    static final int
    T7
    Temporary (not preserved across call).
    static final int
    T8
    Temporary (not preserved across call).
    static final int
    T9
    Temporary (not preserved across call).
    static final int
    V0
    Expression evaluation and results of a function.
    static final int
    V1
    Expression evaluation and results of a function.
    static final int
    ZERO
    Constant 0.

    Fields inherited from class jminusminus.NRegister

    name, number

  • Constructor Summary

    Constructors
    Constructor
    Description
    NPhysicalRegister(int number, String name)
    Constructs an NPhysicalRegister.

  • Method Summary

    Modifier and Type
    Method
    Description
    String
    toString()
    Returns a string representation of this physical register.

    Methods inherited from class jminusminus.NRegister

    name, number

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

  • Field Details

  • Constructor Details

    • NPhysicalRegister

      public NPhysicalRegister(int number, String name)
      Constructs an NPhysicalRegister.
      Parameters:
      number - number of the register.
      name - name of the register.

  • Method Details

    • toString

      public String toString()
      Returns a string representation of this physical register.
      Overrides:
      toString in class Object
      Returns:
      a string representation of this physical register.