mars.mips.instructions.syscalls
Class SyscallWrite
java.lang.Object
mars.mips.instructions.syscalls.AbstractSyscall
mars.mips.instructions.syscalls.SyscallWrite
- All Implemented Interfaces:
- Syscall
public class SyscallWrite
- extends AbstractSyscall
Service to write to file descriptor given in $a0. $a1 specifies buffer
and $a2 specifies length. Number of characters written is returned in $v0
(this was changed from $a0 in MARS 3.7 for SPIM compatibility. The table
in COD erroneously shows $a0).
Constructor Summary |
SyscallWrite()
Build an instance of the Write file syscall. |
Method Summary |
void |
simulate(ProgramStatement statement)
Performs syscall function to write to file descriptor given in $a0. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
SyscallWrite
public SyscallWrite()
- Build an instance of the Write file syscall. Default service number
is 15 and name is "Write".
simulate
public void simulate(ProgramStatement statement)
throws ProcessingException
- Performs syscall function to write to file descriptor given in $a0. $a1 specifies buffer
and $a2 specifies length. Number of characters written is returned in $v0, starting in MARS 3.7.
- Specified by:
simulate
in interface Syscall
- Specified by:
simulate
in class AbstractSyscall
- Parameters:
statement
- ProgramStatement object for this syscall instruction.
- Throws:
ProcessingException