RegisterConstants.GPR (Jikes RVM API)

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org.jikesrvm.ia32
Enum RegisterConstants.GPR

java.lang.Object
  java.lang.Enum<RegisterConstants.GPR>
      org.jikesrvm.ia32.RegisterConstants.GPR

All Implemented Interfaces:: Serializable, Comparable<RegisterConstants.GPR>, RegisterConstants.MachineRegister

Enclosing interface:: RegisterConstants

public static enum RegisterConstants.GPR
extends Enum<RegisterConstants.GPR>
implements RegisterConstants.MachineRegister
extends Enum<RegisterConstants.GPR>
implements RegisterConstants.MachineRegister

Representation of general purpose registers

Enum Constant Summary
`EAX`
`EBP`
`EBX`
`ECX`
`EDI`
`EDX`
`EIP`
`ESI`
`ESP`
`R10`
`R11`
`R12`
`R13`
`R14`
`R15`
`R8`
`R9`

Field Summary
`private static RegisterConstants.GPR[]`	`vals` Local copy of the backing array.

Method Summary
`static RegisterConstants.GPR`	`getForOpcode(int opcode)` Convert encoded value representing an opcode into the GPR to represent it
`static RegisterConstants.GPR`	`lookup(int num)` Convert encoded value into the GPR it represents
`boolean`	`needsREXprefix()`
`byte`	`value()`
`byte`	`valueForOpcode()`
`static RegisterConstants.GPR`	`valueOf(String name)` Returns the enum constant of this type with the specified name.
`static RegisterConstants.GPR[]`	`values()` Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum
`clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf`

Methods inherited from class java.lang.Object
`getClass, notify, notifyAll, wait, wait, wait`

Enum Constant Detail

EAX

public static final RegisterConstants.GPR EAX

ECX

public static final RegisterConstants.GPR ECX

EDX

public static final RegisterConstants.GPR EDX

EBX

public static final RegisterConstants.GPR EBX

ESP

public static final RegisterConstants.GPR ESP

EBP

public static final RegisterConstants.GPR EBP

ESI

public static final RegisterConstants.GPR ESI

EDI

public static final RegisterConstants.GPR EDI

R8

public static final RegisterConstants.GPR R8

R9

public static final RegisterConstants.GPR R9

R10

public static final RegisterConstants.GPR R10

R11

public static final RegisterConstants.GPR R11

R12

public static final RegisterConstants.GPR R12

R13

public static final RegisterConstants.GPR R13

R14

public static final RegisterConstants.GPR R14

R15

public static final RegisterConstants.GPR R15

EIP

public static final RegisterConstants.GPR EIP

Field Detail

vals

private static final RegisterConstants.GPR[] vals

Local copy of the backing array. Copied here to avoid calls to clone

Method Detail

values

public static RegisterConstants.GPR[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (RegisterConstants.GPR c : RegisterConstants.GPR.values())
    System.out.println(c);

Returns:: an array containing the constants of this enum type, in the order they are declared

valueOf

public static RegisterConstants.GPR valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:: name - the name of the enum constant to be returned.
Returns:: the enum constant with the specified name
Throws:: IllegalArgumentException - if this enum type has no constant with the specified name; NullPointerException - if the argument is null

value

public byte value()

Specified by:: value in interface RegisterConstants.MachineRegister

Returns:: encoded value of this register

valueForOpcode

public byte valueForOpcode()

Returns:: encoded value of this register to be included in the opcode byte

needsREXprefix

public boolean needsREXprefix()

Specified by:: needsREXprefix in interface RegisterConstants.MachineRegister

Returns:: does this register require a REX prefix byte?

lookup

public static RegisterConstants.GPR lookup(int num)

Convert encoded value into the GPR it represents

Parameters:: num - encoded value
Returns:: represented GPR

getForOpcode

public static RegisterConstants.GPR getForOpcode(int opcode)

Convert encoded value representing an opcode into the GPR to represent it

Parameters:: opcode - encoded value
Returns:: represented GPR