-/* Read or write LEN bytes from inferior memory at MEMADDR, transferring
- to or from debugger address MYADDR. Write to inferior if SHOULD_WRITE is
- nonzero.
-
- Return the number of bytes actually transfered, or -1 if the
- transfer is not supported or otherwise fails. Return of a non-negative
- value less than LEN indicates that no further transfer is possible.
- NOTE: This is different than the to_xfer_partial interface, in which
- positive values less than LEN mean further transfers may be possible. */
+/* Read LEN bytes from dcache memory at MEMADDR, transferring to
+ debugger address MYADDR. If the data is presently cached, this
+ fills the cache. Arguments/return are like the target_xfer_partial
+ interface. */