private bool Sys_Write()
{
// get fd index
UInt64 fd_index = RBX;
if (fd_index >= (UInt64)FDCount)
{
Terminate(ErrorCode.OutOfBounds); return(false);
}
// get fd
IFileWrapper fd = FileDescriptors[fd_index];
if (fd == null)
{
Terminate(ErrorCode.FDNotInUse); return(false);
}
// make sure we can write
if (!fd.CanWrite())
{
Terminate(ErrorCode.FilePermissions); return(false);
}
// make sure we're in bounds
if (RCX >= MemorySize || RDX >= MemorySize || RCX + RDX > MemorySize)
{
Terminate(ErrorCode.OutOfBounds); return(false);
}
// attempt to write from memory to the file - success = num written, fail = -1
try { RAX = (UInt64)fd.Write(Memory, (int)RCX, (int)RDX); }
catch (Exception) { RAX = ~(UInt64)0; }
return(true);
}