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EMARS/docs/mars/mips/instructions/BasicInstruction.html
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adolphenom 0da1c5dcca Source code of MARS Assembler 
First commit of the 4.5 version (latest version available)
2014-12-21 12:49:28 +01:00

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BasicInstruction
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mars.mips.instructions</FONT>
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Class BasicInstruction</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 "><A HREF="../../../mars/mips/instructions/Instruction.html" title="class in mars.mips.instructions">mars.mips.instructions.Instruction</A>
<IMG SRC="../../../resources/inherit.gif" ALT="extended by "><B>mars.mips.instructions.BasicInstruction</B>
</PRE>
<HR>
<DL>
<DT><PRE>public class <B>BasicInstruction</B><DT>extends <A HREF="../../../mars/mips/instructions/Instruction.html" title="class in mars.mips.instructions">Instruction</A></DL>
</PRE>
<P>
Class to represent a basic instruction in the MIPS instruction set.
Basic instruction means it translates directly to a 32-bit binary machine
instruction.
<P>
<P>
<DL>
<DT><B>Author:</B></DT>
<DD>Pete Sanderson and Ken Vollmar</DD>
</DL>
<HR>
<P>
<!-- =========== FIELD SUMMARY =========== -->
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Fields inherited from class mars.mips.instructions.<A HREF="../../../mars/mips/instructions/Instruction.html" title="class in mars.mips.instructions">Instruction</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../mars/mips/instructions/Instruction.html#description">description</A>, <A HREF="../../../mars/mips/instructions/Instruction.html#exampleFormat">exampleFormat</A>, <A HREF="../../../mars/mips/instructions/Instruction.html#INSTRUCTION_LENGTH">INSTRUCTION_LENGTH</A>, <A HREF="../../../mars/mips/instructions/Instruction.html#INSTRUCTION_LENGTH_BITS">INSTRUCTION_LENGTH_BITS</A>, <A HREF="../../../mars/mips/instructions/Instruction.html#mnemonic">mnemonic</A>, <A HREF="../../../mars/mips/instructions/Instruction.html#operandMask">operandMask</A>, <A HREF="../../../mars/mips/instructions/Instruction.html#tokenList">tokenList</A></CODE></TD>
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<TD><CODE><B><A HREF="../../../mars/mips/instructions/BasicInstruction.html#BasicInstruction(java.lang.String, mars.mips.instructions.BasicInstructionFormat, java.lang.String, mars.mips.instructions.SimulationCode)">BasicInstruction</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;example,
<A HREF="../../../mars/mips/instructions/BasicInstructionFormat.html" title="class in mars.mips.instructions">BasicInstructionFormat</A>&nbsp;instrFormat,
<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;operMask,
<A HREF="../../../mars/mips/instructions/SimulationCode.html" title="interface in mars.mips.instructions">SimulationCode</A>&nbsp;simCode)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../mars/mips/instructions/BasicInstruction.html#BasicInstruction(java.lang.String, java.lang.String, mars.mips.instructions.BasicInstructionFormat, java.lang.String, mars.mips.instructions.SimulationCode)">BasicInstruction</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;example,
<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;description,
<A HREF="../../../mars/mips/instructions/BasicInstructionFormat.html" title="class in mars.mips.instructions">BasicInstructionFormat</A>&nbsp;instrFormat,
<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;operMask,
<A HREF="../../../mars/mips/instructions/SimulationCode.html" title="interface in mars.mips.instructions">SimulationCode</A>&nbsp;simCode)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;BasicInstruction constructor.</TD>
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<CODE>&nbsp;<A HREF="../../../mars/mips/instructions/BasicInstructionFormat.html" title="class in mars.mips.instructions">BasicInstructionFormat</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../mars/mips/instructions/BasicInstruction.html#getInstructionFormat()">getInstructionFormat</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the operand format of the instruction.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../mars/mips/instructions/BasicInstruction.html#getOpcodeMask()">getOpcodeMask</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>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../mars/mips/instructions/BasicInstruction.html#getOpcodeMatch()">getOpcodeMatch</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>&nbsp;<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></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../mars/mips/instructions/BasicInstruction.html#getOperationMask()">getOperationMask</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the 32-character operation mask.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../mars/mips/instructions/SimulationCode.html" title="interface in mars.mips.instructions">SimulationCode</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../mars/mips/instructions/BasicInstruction.html#getSimulationCode()">getSimulationCode</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the SimulationCode object.</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_mars.mips.instructions.Instruction"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class mars.mips.instructions.<A HREF="../../../mars/mips/instructions/Instruction.html" title="class in mars.mips.instructions">Instruction</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../mars/mips/instructions/Instruction.html#createExampleTokenList()">createExampleTokenList</A>, <A HREF="../../../mars/mips/instructions/Instruction.html#extractOperator(java.lang.String)">extractOperator</A>, <A HREF="../../../mars/mips/instructions/Instruction.html#getDescription()">getDescription</A>, <A HREF="../../../mars/mips/instructions/Instruction.html#getExampleFormat()">getExampleFormat</A>, <A HREF="../../../mars/mips/instructions/Instruction.html#getInstructionLength()">getInstructionLength</A>, <A HREF="../../../mars/mips/instructions/Instruction.html#getName()">getName</A>, <A HREF="../../../mars/mips/instructions/Instruction.html#getTokenList()">getTokenList</A></CODE></TD>
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<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>
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<!-- ========= CONSTRUCTOR DETAIL ======== -->
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<A NAME="BasicInstruction(java.lang.String, java.lang.String, mars.mips.instructions.BasicInstructionFormat, java.lang.String, mars.mips.instructions.SimulationCode)"><!-- --></A><H3>
BasicInstruction</H3>
<PRE>
public <B>BasicInstruction</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;example,
<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;description,
<A HREF="../../../mars/mips/instructions/BasicInstructionFormat.html" title="class in mars.mips.instructions">BasicInstructionFormat</A>&nbsp;instrFormat,
<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;operMask,
<A HREF="../../../mars/mips/instructions/SimulationCode.html" title="interface in mars.mips.instructions">SimulationCode</A>&nbsp;simCode)</PRE>
<DL>
<DD>BasicInstruction constructor.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>example</CODE> - An example usage of the instruction, as a String.<DD><CODE>instrFormat</CODE> - The format is R, I, I-branch or J.<DD><CODE>operMask</CODE> - The opcode mask is a 32 character string that contains the opcode in binary in the appropriate bit positions and codes for operand positions ('f', 's', 't') in the remainding positions.<DD><CODE>simCode</CODE> - The inline definition of an object and class which anonymously implements the SimulationCode interface.<DT><B>See Also:</B><DD><A HREF="../../../mars/mips/instructions/SimulationCode.html" title="interface in mars.mips.instructions"><CODE>SimulationCode</CODE></A></DL>
</DL>
<HR>
<A NAME="BasicInstruction(java.lang.String, mars.mips.instructions.BasicInstructionFormat, java.lang.String, mars.mips.instructions.SimulationCode)"><!-- --></A><H3>
BasicInstruction</H3>
<PRE>
public <B>BasicInstruction</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;example,
<A HREF="../../../mars/mips/instructions/BasicInstructionFormat.html" title="class in mars.mips.instructions">BasicInstructionFormat</A>&nbsp;instrFormat,
<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;operMask,
<A HREF="../../../mars/mips/instructions/SimulationCode.html" title="interface in mars.mips.instructions">SimulationCode</A>&nbsp;simCode)</PRE>
<DL>
</DL>
<!-- ============ METHOD DETAIL ========== -->
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<A NAME="getOperationMask()"><!-- --></A><H3>
getOperationMask</H3>
<PRE>
public <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> <B>getOperationMask</B>()</PRE>
<DL>
<DD>Gets the 32-character operation mask. Each mask position represents a
bit position in the 32-bit machine instruction. Operation codes and
unused bits are represented in the mask by 1's and 0's. Operand codes
are represented by 'f', 's', and 't' for bits occupied by first, secon
and third operand, respectively.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>The 32 bit mask, as a String</DL>
</DD>
</DL>
<HR>
<A NAME="getInstructionFormat()"><!-- --></A><H3>
getInstructionFormat</H3>
<PRE>
public <A HREF="../../../mars/mips/instructions/BasicInstructionFormat.html" title="class in mars.mips.instructions">BasicInstructionFormat</A> <B>getInstructionFormat</B>()</PRE>
<DL>
<DD>Gets the operand format of the instruction. MIPS defines 3 of these
R-format, I-format, and J-format. R-format is all registers. I-format
is address formed from register base with immediate offset. J-format
is for jump destination addresses. I have added one more:
I-branch-format, for branch destination addresses. These are a variation
of the I-format in that the computed value is address relative to the
Program Counter. All four formats are represented by static objects.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>The machine instruction format, R, I, J or I-branch.</DL>
</DD>
</DL>
<HR>
<A NAME="getSimulationCode()"><!-- --></A><H3>
getSimulationCode</H3>
<PRE>
public <A HREF="../../../mars/mips/instructions/SimulationCode.html" title="interface in mars.mips.instructions">SimulationCode</A> <B>getSimulationCode</B>()</PRE>
<DL>
<DD>Gets the SimulationCode object. It is really an object of an anonymous
class that implements the SimulationCode interface. Such an object has but one
method: Simulate().
<P>
<DD><DL>
<DT><B>Returns:</B><DD>the SimulationCode object for this instruction.<DT><B>See Also:</B><DD><A HREF="../../../mars/mips/instructions/SimulationCode.html" title="interface in mars.mips.instructions"><CODE>SimulationCode</CODE></A></DL>
</DD>
</DL>
<HR>
<A NAME="getOpcodeMask()"><!-- --></A><H3>
getOpcodeMask</H3>
<PRE>
public int <B>getOpcodeMask</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getOpcodeMatch()"><!-- --></A><H3>
getOpcodeMatch</H3>
<PRE>
public int <B>getOpcodeMatch</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
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