48     fn read_volatile(&mut self, slice: VolatileSlice) -> Result<usize>;  in read_volatile()
52     fn read_exact_volatile(&mut self, mut slice: VolatileSlice) -> Result<()> {  in read_exact_volatile()
53         while slice.size() > 0 {  in read_exact_volatile()
54             let bytes_read = self.read_volatile(slice)?;  in read_exact_volatile()
60             slice = slice.offset(bytes_read as u64).unwrap();  in read_exact_volatile()
67     fn write_volatile(&mut self, slice: VolatileSlice) -> Result<usize>;  in write_volatile()
71     fn write_all_volatile(&mut self, mut slice: VolatileSlice) -> Result<()> {  in write_all_volatile()
72         while slice.size() > 0 {  in write_all_volatile()
73             let bytes_written = self.write_volatile(slice)?;  in write_all_volatile()
79             slice = slice.offset(bytes_written as u64).unwrap();  in write_all_volatile()
86     fn read_volatile(&mut self, slice: VolatileSlice) -> Result<usize> {  in read_volatile()
92                 slice.as_ptr() as *mut c_void,  in read_volatile()
93                 slice.size() as usize,  in read_volatile()
103     fn write_volatile(&mut self, slice: VolatileSlice) -> Result<usize> {  in write_volatile()
109                 slice.as_ptr() as *const c_void,  in write_volatile()
110                 slice.size() as usize,  in write_volatile()