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Syscall
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SUMMARY: NESTED | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD>
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mars.mips.instructions.syscalls</FONT>
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<BR>
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Interface Syscall</H2>
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<DL>
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<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../../mars/mips/instructions/syscalls/AbstractSyscall.html" title="class in mars.mips.instructions.syscalls">AbstractSyscall</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallClose.html" title="class in mars.mips.instructions.syscalls">SyscallClose</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallConfirmDialog.html" title="class in mars.mips.instructions.syscalls">SyscallConfirmDialog</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallExit.html" title="class in mars.mips.instructions.syscalls">SyscallExit</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallExit2.html" title="class in mars.mips.instructions.syscalls">SyscallExit2</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallInputDialogDouble.html" title="class in mars.mips.instructions.syscalls">SyscallInputDialogDouble</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallInputDialogFloat.html" title="class in mars.mips.instructions.syscalls">SyscallInputDialogFloat</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallInputDialogInt.html" title="class in mars.mips.instructions.syscalls">SyscallInputDialogInt</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallInputDialogString.html" title="class in mars.mips.instructions.syscalls">SyscallInputDialogString</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallMessageDialog.html" title="class in mars.mips.instructions.syscalls">SyscallMessageDialog</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallMessageDialogDouble.html" title="class in mars.mips.instructions.syscalls">SyscallMessageDialogDouble</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallMessageDialogFloat.html" title="class in mars.mips.instructions.syscalls">SyscallMessageDialogFloat</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallMessageDialogInt.html" title="class in mars.mips.instructions.syscalls">SyscallMessageDialogInt</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallMessageDialogString.html" title="class in mars.mips.instructions.syscalls">SyscallMessageDialogString</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallMidiOut.html" title="class in mars.mips.instructions.syscalls">SyscallMidiOut</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallMidiOutSync.html" title="class in mars.mips.instructions.syscalls">SyscallMidiOutSync</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallOpen.html" title="class in mars.mips.instructions.syscalls">SyscallOpen</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallPrintChar.html" title="class in mars.mips.instructions.syscalls">SyscallPrintChar</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallPrintDouble.html" title="class in mars.mips.instructions.syscalls">SyscallPrintDouble</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallPrintFloat.html" title="class in mars.mips.instructions.syscalls">SyscallPrintFloat</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallPrintInt.html" title="class in mars.mips.instructions.syscalls">SyscallPrintInt</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallPrintIntBinary.html" title="class in mars.mips.instructions.syscalls">SyscallPrintIntBinary</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallPrintIntHex.html" title="class in mars.mips.instructions.syscalls">SyscallPrintIntHex</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallPrintIntUnsigned.html" title="class in mars.mips.instructions.syscalls">SyscallPrintIntUnsigned</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallPrintString.html" title="class in mars.mips.instructions.syscalls">SyscallPrintString</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallRandDouble.html" title="class in mars.mips.instructions.syscalls">SyscallRandDouble</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallRandFloat.html" title="class in mars.mips.instructions.syscalls">SyscallRandFloat</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallRandInt.html" title="class in mars.mips.instructions.syscalls">SyscallRandInt</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallRandIntRange.html" title="class in mars.mips.instructions.syscalls">SyscallRandIntRange</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallRandSeed.html" title="class in mars.mips.instructions.syscalls">SyscallRandSeed</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallRead.html" title="class in mars.mips.instructions.syscalls">SyscallRead</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallReadChar.html" title="class in mars.mips.instructions.syscalls">SyscallReadChar</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallReadDouble.html" title="class in mars.mips.instructions.syscalls">SyscallReadDouble</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallReadFloat.html" title="class in mars.mips.instructions.syscalls">SyscallReadFloat</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallReadInt.html" title="class in mars.mips.instructions.syscalls">SyscallReadInt</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallReadString.html" title="class in mars.mips.instructions.syscalls">SyscallReadString</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallSbrk.html" title="class in mars.mips.instructions.syscalls">SyscallSbrk</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallSleep.html" title="class in mars.mips.instructions.syscalls">SyscallSleep</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallTime.html" title="class in mars.mips.instructions.syscalls">SyscallTime</A>, <A HREF="../../../../mars/mips/instructions/syscalls/SyscallWrite.html" title="class in mars.mips.instructions.syscalls">SyscallWrite</A></DD>
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</DL>
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<HR>
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<DL>
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<DT><PRE>public interface <B>Syscall</B></DL>
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</PRE>
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<P>
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Interface for any MIPS syscall system service. A qualifying service
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must be a class in the mars.mips.instructions.syscalls package that
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implements the Syscall interface, must be compiled into a .class file,
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and its .class file must be in the same folder as Syscall.class.
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Mars will detect a qualifying syscall upon startup, create an instance
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using its no-argument constructor and add it to its syscall list.
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When its service is invoked at runtime ("syscall" instruction
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with its service number stored in register $v0), its simulate()
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method will be invoked.
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<P>
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<P>
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<HR>
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<P>
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<!-- ========== METHOD SUMMARY =========== -->
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<A NAME="method_summary"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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<B>Method Summary</B></FONT></TH>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> <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>
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<TD><CODE><B><A HREF="../../../../mars/mips/instructions/syscalls/Syscall.html#getName()">getName</A></B>()</CODE>
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<BR>
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Return a name you have chosen for this syscall.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> int</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../../mars/mips/instructions/syscalls/Syscall.html#getNumber()">getNumber</A></B>()</CODE>
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<BR>
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Return the assigned service number.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> void</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../../mars/mips/instructions/syscalls/Syscall.html#setNumber(int)">setNumber</A></B>(int num)</CODE>
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<BR>
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Set the service number.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> void</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../../mars/mips/instructions/syscalls/Syscall.html#simulate(mars.ProgramStatement)">simulate</A></B>(<A HREF="../../../../mars/ProgramStatement.html" title="class in mars">ProgramStatement</A> statement)</CODE>
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<BR>
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Performs syscall function.</TD>
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</TR>
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</TABLE>
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<P>
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<!-- ============ METHOD DETAIL ========== -->
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<B>Method Detail</B></FONT></TH>
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</TR>
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</TABLE>
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<A NAME="getName()"><!-- --></A><H3>
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getName</H3>
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<PRE>
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<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>getName</B>()</PRE>
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<DL>
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<DD>Return a name you have chosen for this syscall. This can be used by a MARS
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user to refer to the service when choosing to override its default service
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number in the configuration file.
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<P>
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<DD><DL>
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<DT><B>Returns:</B><DD>service name as a string</DL>
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</DD>
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</DL>
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<HR>
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<A NAME="setNumber(int)"><!-- --></A><H3>
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setNumber</H3>
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<PRE>
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void <B>setNumber</B>(int num)</PRE>
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<DL>
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<DD>Set the service number. This is provided to allow MARS implementer or user
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to override the default service number.
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<P>
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<DD><DL>
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<DT><B>Parameters:</B><DD><CODE>num</CODE> - specified service number to override the default.</DL>
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</DD>
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</DL>
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<HR>
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<A NAME="getNumber()"><!-- --></A><H3>
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getNumber</H3>
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<PRE>
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int <B>getNumber</B>()</PRE>
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<DL>
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<DD>Return the assigned service number. This is the number the MIPS programmer
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must store into $v0 before issuing the SYSCALL instruction.
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<P>
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<DD><DL>
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<DT><B>Returns:</B><DD>assigned service number</DL>
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</DD>
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</DL>
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<HR>
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<A NAME="simulate(mars.ProgramStatement)"><!-- --></A><H3>
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simulate</H3>
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<PRE>
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void <B>simulate</B>(<A HREF="../../../../mars/ProgramStatement.html" title="class in mars">ProgramStatement</A> statement)
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throws <A HREF="../../../../mars/ProcessingException.html" title="class in mars">ProcessingException</A></PRE>
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<DL>
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<DD>Performs syscall function. It will be invoked when the service is invoked
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at simulation time. Service is identified by value stored in $v0.
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<P>
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<DD><DL>
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<DT><B>Parameters:</B><DD><CODE>statement</CODE> - ProgramStatement for this syscall statement.
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<DT><B>Throws:</B>
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<DD><CODE><A HREF="../../../../mars/ProcessingException.html" title="class in mars">ProcessingException</A></CODE></DL>
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