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Coprocessor0
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mars.mips.hardware</FONT>
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Class Coprocessor0</H2>
<PRE>
<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
<IMG SRC="../../../resources/inherit.gif" ALT="extended by "><B>mars.mips.hardware.Coprocessor0</B>
</PRE>
<HR>
<DL>
<DT><PRE>public class <B>Coprocessor0</B><DT>extends <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></DL>
</PRE>
<P>
Represents Coprocessor 0. We will use only its interrupt/exception registers.
<P>
<P>
<DL>
<DT><B>Author:</B></DT>
<DD>Pete Sanderson</DD>
</DL>
<HR>
<P>
<!-- =========== FIELD SUMMARY =========== -->
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<B>Field Summary</B></FONT></TH>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../mars/mips/hardware/Coprocessor0.html#CAUSE">CAUSE</A></B></CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../mars/mips/hardware/Coprocessor0.html#DEFAULT_STATUS_VALUE">DEFAULT_STATUS_VALUE</A></B></CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../mars/mips/hardware/Coprocessor0.html#EPC">EPC</A></B></CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../mars/mips/hardware/Coprocessor0.html#EXCEPTION_LEVEL">EXCEPTION_LEVEL</A></B></CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../mars/mips/hardware/Coprocessor0.html#STATUS">STATUS</A></B></CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../mars/mips/hardware/Coprocessor0.html#VADDR">VADDR</A></B></CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Coprocessor register names</TD>
</TR>
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&nbsp;
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<TD><CODE><B><A HREF="../../../mars/mips/hardware/Coprocessor0.html#Coprocessor0()">Coprocessor0</A></B>()</CODE>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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<CODE>static&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../mars/mips/hardware/Coprocessor0.html#addRegistersObserver(java.util.Observer)">addRegistersObserver</A></B>(<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/util/Observer.html?is-external=true" title="class or interface in java.util">Observer</A>&nbsp;observer)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Each individual register is a separate object and Observable.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../mars/mips/hardware/Coprocessor0.html#deleteRegistersObserver(java.util.Observer)">deleteRegistersObserver</A></B>(<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/util/Observer.html?is-external=true" title="class or interface in java.util">Observer</A>&nbsp;observer)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Each individual register is a separate object and Observable.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../mars/mips/hardware/Coprocessor0.html#getNumber(java.lang.String)">getNumber</A></B>(<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;n)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;For getting the number representation of the register.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="../../../mars/mips/hardware/Register.html" title="class in mars.mips.hardware">Register</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../mars/mips/hardware/Coprocessor0.html#getRegister(java.lang.String)">getRegister</A></B>(<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;rname)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get register object corresponding to given name.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../mars/mips/hardware/Coprocessor0.html#getRegisterPosition(mars.mips.hardware.Register)">getRegisterPosition</A></B>(<A HREF="../../../mars/mips/hardware/Register.html" title="class in mars.mips.hardware">Register</A>&nbsp;r)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Coprocessor0 implements only selected registers, so the register number
(8, 12, 13, 14) does not correspond to its position in the list of registers
(0, 1, 2, 3).</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="../../../mars/mips/hardware/Register.html" title="class in mars.mips.hardware">Register</A>[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../mars/mips/hardware/Coprocessor0.html#getRegisters()">getRegisters</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;For returning the set of registers.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../mars/mips/hardware/Coprocessor0.html#getValue(int)">getValue</A></B>(int&nbsp;num)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the value of the register who's number is num.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../mars/mips/hardware/Coprocessor0.html#resetRegisters()">resetRegisters</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Method to reinitialize the values of the registers.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../mars/mips/hardware/Coprocessor0.html#showRegisters()">showRegisters</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Method for displaying the register values for debugging.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../mars/mips/hardware/Coprocessor0.html#updateRegister(int, int)">updateRegister</A></B>(int&nbsp;num,
int&nbsp;val)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This method updates the register value who's number is num.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../mars/mips/hardware/Coprocessor0.html#updateRegister(java.lang.String, int)">updateRegister</A></B>(<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;n,
int&nbsp;val)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the value of the register given to the value given.</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
</TR>
</TABLE>
&nbsp;
<P>
<!-- ============ FIELD DETAIL =========== -->
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<A NAME="VADDR"><!-- --></A><H3>
VADDR</H3>
<PRE>
public static final int <B>VADDR</B></PRE>
<DL>
<DD>Coprocessor register names
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#mars.mips.hardware.Coprocessor0.VADDR">Constant Field Values</A></DL>
</DL>
<HR>
<A NAME="STATUS"><!-- --></A><H3>
STATUS</H3>
<PRE>
public static final int <B>STATUS</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#mars.mips.hardware.Coprocessor0.STATUS">Constant Field Values</A></DL>
</DL>
<HR>
<A NAME="CAUSE"><!-- --></A><H3>
CAUSE</H3>
<PRE>
public static final int <B>CAUSE</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#mars.mips.hardware.Coprocessor0.CAUSE">Constant Field Values</A></DL>
</DL>
<HR>
<A NAME="EPC"><!-- --></A><H3>
EPC</H3>
<PRE>
public static final int <B>EPC</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#mars.mips.hardware.Coprocessor0.EPC">Constant Field Values</A></DL>
</DL>
<HR>
<A NAME="EXCEPTION_LEVEL"><!-- --></A><H3>
EXCEPTION_LEVEL</H3>
<PRE>
public static final int <B>EXCEPTION_LEVEL</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#mars.mips.hardware.Coprocessor0.EXCEPTION_LEVEL">Constant Field Values</A></DL>
</DL>
<HR>
<A NAME="DEFAULT_STATUS_VALUE"><!-- --></A><H3>
DEFAULT_STATUS_VALUE</H3>
<PRE>
public static final int <B>DEFAULT_STATUS_VALUE</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#mars.mips.hardware.Coprocessor0.DEFAULT_STATUS_VALUE">Constant Field Values</A></DL>
</DL>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<A NAME="constructor_detail"><!-- --></A>
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<B>Constructor Detail</B></FONT></TH>
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</TABLE>
<A NAME="Coprocessor0()"><!-- --></A><H3>
Coprocessor0</H3>
<PRE>
public <B>Coprocessor0</B>()</PRE>
<DL>
</DL>
<!-- ============ METHOD DETAIL ========== -->
<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<A NAME="showRegisters()"><!-- --></A><H3>
showRegisters</H3>
<PRE>
public static void <B>showRegisters</B>()</PRE>
<DL>
<DD>Method for displaying the register values for debugging.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="updateRegister(java.lang.String, int)"><!-- --></A><H3>
updateRegister</H3>
<PRE>
public static int <B>updateRegister</B>(<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;n,
int&nbsp;val)</PRE>
<DL>
<DD>Sets the value of the register given to the value given.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>n</CODE> - name of register to set the value of ($n, where n is reg number).<DD><CODE>val</CODE> - The desired value for the register.
<DT><B>Returns:</B><DD>old value in register prior to update</DL>
</DD>
</DL>
<HR>
<A NAME="updateRegister(int, int)"><!-- --></A><H3>
updateRegister</H3>
<PRE>
public static int <B>updateRegister</B>(int&nbsp;num,
int&nbsp;val)</PRE>
<DL>
<DD>This method updates the register value who's number is num.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>num</CODE> - Number of register to set the value of.<DD><CODE>val</CODE> - The desired value for the register.
<DT><B>Returns:</B><DD>old value in register prior to update</DL>
</DD>
</DL>
<HR>
<A NAME="getValue(int)"><!-- --></A><H3>
getValue</H3>
<PRE>
public static int <B>getValue</B>(int&nbsp;num)</PRE>
<DL>
<DD>Returns the value of the register who's number is num.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>num</CODE> - The register number.
<DT><B>Returns:</B><DD>The value of the given register. 0 for non-implemented registers</DL>
</DD>
</DL>
<HR>
<A NAME="getNumber(java.lang.String)"><!-- --></A><H3>
getNumber</H3>
<PRE>
public static int <B>getNumber</B>(<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;n)</PRE>
<DL>
<DD>For getting the number representation of the register.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>n</CODE> - The string formatted register name to look for.
<DT><B>Returns:</B><DD>The number of the register represented by the string. -1 if no match.</DL>
</DD>
</DL>
<HR>
<A NAME="getRegisters()"><!-- --></A><H3>
getRegisters</H3>
<PRE>
public static <A HREF="../../../mars/mips/hardware/Register.html" title="class in mars.mips.hardware">Register</A>[] <B>getRegisters</B>()</PRE>
<DL>
<DD>For returning the set of registers.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>The set of registers.</DL>
</DD>
</DL>
<HR>
<A NAME="getRegisterPosition(mars.mips.hardware.Register)"><!-- --></A><H3>
getRegisterPosition</H3>
<PRE>
public static int <B>getRegisterPosition</B>(<A HREF="../../../mars/mips/hardware/Register.html" title="class in mars.mips.hardware">Register</A>&nbsp;r)</PRE>
<DL>
<DD>Coprocessor0 implements only selected registers, so the register number
(8, 12, 13, 14) does not correspond to its position in the list of registers
(0, 1, 2, 3).
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>r</CODE> - A coprocessor0 Register
<DT><B>Returns:</B><DD>the list position of given register, -1 if not found.</DL>
</DD>
</DL>
<HR>
<A NAME="getRegister(java.lang.String)"><!-- --></A><H3>
getRegister</H3>
<PRE>
public static <A HREF="../../../mars/mips/hardware/Register.html" title="class in mars.mips.hardware">Register</A> <B>getRegister</B>(<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;rname)</PRE>
<DL>
<DD>Get register object corresponding to given name. If no match, return null.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>rname</CODE> - The register name, in $0 format.
<DT><B>Returns:</B><DD>The register object,or null if not found.</DL>
</DD>
</DL>
<HR>
<A NAME="resetRegisters()"><!-- --></A><H3>
resetRegisters</H3>
<PRE>
public static void <B>resetRegisters</B>()</PRE>
<DL>
<DD>Method to reinitialize the values of the registers.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="addRegistersObserver(java.util.Observer)"><!-- --></A><H3>
addRegistersObserver</H3>
<PRE>
public static void <B>addRegistersObserver</B>(<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/util/Observer.html?is-external=true" title="class or interface in java.util">Observer</A>&nbsp;observer)</PRE>
<DL>
<DD>Each individual register is a separate object and Observable. This handy method
will add the given Observer to each one.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="deleteRegistersObserver(java.util.Observer)"><!-- --></A><H3>
deleteRegistersObserver</H3>
<PRE>
public static void <B>deleteRegistersObserver</B>(<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/util/Observer.html?is-external=true" title="class or interface in java.util">Observer</A>&nbsp;observer)</PRE>
<DL>
<DD>Each individual register is a separate object and Observable. This handy method
will delete the given Observer from each one.
<P>
<DD><DL>
</DL>
</DD>
</DL>
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