SyscallSbrk

java.lang.Object

mars.mips.instructions.syscalls.AbstractSyscall

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

Constructors

Constructor

Description

SyscallSbrk()

Build an instance of the Sbrk syscall.
Method Summary

Modifier and Type

Method

Description

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

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