mars.mips.instructions.syscalls
Class SyscallSbrk

java.lang.Object
  extended by mars.mips.instructions.syscalls.AbstractSyscall
      extended by mars.mips.instructions.syscalls.SyscallSbrk
All Implemented Interfaces:
Syscall

public class SyscallSbrk
extends AbstractSyscall

Service to allocate amount of heap memory specified in $a0, putting address into $v0.


Constructor Summary
SyscallSbrk()
          Build an instance of the Sbrk syscall.
 
Method Summary
 void simulate(ProgramStatement statement)
          Performs syscall function to allocate amount of heap memory specified in $a0, putting address into $v0.
 
Methods inherited from class mars.mips.instructions.syscalls.AbstractSyscall
getName, getNumber, setNumber
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

SyscallSbrk

public SyscallSbrk()
Build an instance of the Sbrk syscall. Default service number is 9 and name is "Sbrk".

Method Detail

simulate

public void simulate(ProgramStatement statement)
              throws ProcessingException
Performs syscall function to allocate amount of heap memory specified in $a0, putting address into $v0.

Specified by:
simulate in interface Syscall
Specified by:
simulate in class AbstractSyscall
Parameters:
statement - ProgramStatement object for this syscall instruction.
Throws:
ProcessingException