SVC_IO_UpdateWritePointer
These two functions do the same for write buffer as the previous ones does for reads from the command buffer.
Synopsis
unsigned int SVC_IO_GetWritePointer(FmMsgHandle token, void **write_pointer); void SVC_IO_UpdateWritePointer(FmMsgHandle token, int size);
Input requirements
write_pointer must be the address of a void * variable that will be assigned the output buffer address.