com.cmpware.tools
Class AutoModel.Field

java.lang.Object
  com.cmpware.tools.AutoModel.Field

Enclosing class:

AutoModel

public static final class AutoModel.Field
extends java.lang.Object

This class defines an instruction field. The field is given the number of bits and the start of the field. It also may contain a list of symbols which may map to the values of the bits in this field.

Field Summary

boolean	asmDasmIgnore Completely ignore this field in the assembler / disassembler
int	bits The number of bits in the field
int	dataType The data type of the field (currently UNSIGNED_INT or SIGNED_INT)
static int	HEX_INT The hexadecimal integer field data type
boolean	isDecode The decode field (used to ignore decode fields)
static int	SIGNED_INT The signed integer field data type
int	start The start bit fo the field
java.util.Hashtable	symbolNameLookup This looks up symbols by name
java.util.Hashtable	symbolValueLookup This looks up symbols by value
static int	UNSIGNED_INT The unsigned integer field data type
int	val A temporary place to store the value of the field

Constructor Summary

AutoModel.Field(int bits, int start)
Constructor

AutoModel.Field(int bits, int start, AutoModel.Symbol[] symbols)
Constructor

AutoModel.Field(int bits, int start, boolean isDecode)
Constructor

AutoModel.Field(int bits, int start, boolean isDecode, boolean asmDasmIgnore)
Constructor

AutoModel.Field(int bits, int start, int dataType)
Constructor

Method Summary

int	get(long instr) This method extracts the field data from an instruction.

Methods inherited from class java.lang.Object

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

Field Detail

SIGNED_INT

public static final int SIGNED_INT

The signed integer field data type

See Also:

Constant Field Values

UNSIGNED_INT

public static final int UNSIGNED_INT

The unsigned integer field data type

See Also:

Constant Field Values

HEX_INT

public static final int HEX_INT

The hexadecimal integer field data type

See Also:

Constant Field Values

bits

public int bits

The number of bits in the field

start

public int start

The start bit fo the field

isDecode

public boolean isDecode

The decode field (used to ignore decode fields)

asmDasmIgnore

public boolean asmDasmIgnore

Completely ignore this field in the assembler / disassembler

dataType

public int dataType

The data type of the field (currently UNSIGNED_INT or SIGNED_INT)

val

public int val

A temporary place to store the value of the field

symbolNameLookup

public java.util.Hashtable symbolNameLookup

This looks up symbols by name

symbolValueLookup

public java.util.Hashtable symbolValueLookup

This looks up symbols by value

Constructor Detail

AutoModel.Field

public AutoModel.Field(int bits,
                       int start,
                       AutoModel.Symbol[] symbols)

Constructor

Parameters:

bits - The number of bits in the field

start - The start bit of the field

symbols - a symbol table associated with this field.

AutoModel.Field

public AutoModel.Field(int bits,
                       int start)

Constructor

Parameters:

bits - The number of bits in the field

start - The start bit of the field

AutoModel.Field

public AutoModel.Field(int bits,
                       int start,
                       boolean isDecode)

Constructor

Parameters:

bits - The number of bits in the field

start - The start bit of the field

isDecode - True if this is a decode field. This is used by the assembler and disassembler to ignore the decode fields. This could also be used to tag any fields which the assembler and disassembler should ignore.

AutoModel.Field

public AutoModel.Field(int bits,
                       int start,
                       boolean isDecode,
                       boolean asmDasmIgnore)

Constructor

Parameters:

bits - The number of bits in the field

start - The start bit of the field

isDecode - True if this is a decode field. This is used by the assembler and disassembler to ignore the decode fields.

asmDasmIgnore - True if this field should be ignored by the assembler / disassembler. This is rarely necessary, and is most commonly used in fields that are disjoint. While these fields must be manually merged, at least one half should be completely by the assembler and disassembler. Note that this is somewhat similar to the way the tools ignore decode fields, but this also indicates that this field does not participate in the decode, either.

AutoModel.Field

public AutoModel.Field(int bits,
                       int start,
                       int dataType)

Constructor

Parameters:

bits - The number of bits in the field

start - The start bit of the field

dataType - this data typr of this field. Currently SIGNED_INT, UNSIGNED_INT and HEX_INT are supported.

Method Detail

get

public int get(long instr)

This method extracts the field data from an instruction.

Parameters:

instr - The instruction containing the field.

Returns:

This method returns the field data extracted from an instruction.