[PATCH v3 01/24] New target methods for memory tagging support

[Simon Marchi]

> +    /* Return the allocated memory tags of type TYPE associated with
> +       [ADDRESS, ADDRESS + LEN) in TAGS.
> +
> +       LEN is the number of bytes in the memory range.  TAGS is a vector of
> +       bytes containing the tags found in the above memory range.
> +
> +       It is up to the architecture/target to interpret the bytes in the TAGS
> +       vector and read the tags appropriately.  */
> +    virtual int fetch_memtags (CORE_ADDR address, size_t len,
> +			       gdb::byte_vector &tags, int type)
> +      TARGET_DEFAULT_IGNORE ();
> +
> +    /* Write the allocation tags of type TYPE contained in TAGS to the memory
> +       range [ADDRESS, ADDRESS + LEN).
> +
> +       LEN is the number of bytes in the memory range.  TAGS is a vector of
> +       bytes containing the tags to be stored to the memory range.
> +
> +       It is up to the architecture/target to interpret the bytes in the TAGS
> +       vector and store them appropriately.  */
> +    virtual int store_memtags (CORE_ADDR address, size_t len,
> +			       const gdb::byte_vector &tags, int type)

Some more feedback: make the return values bool, if they are bool, and document
the meaning in the comment.

Simon