[RFC 2/5] xtensa: make configuration dynamic

[augustine.sterling@gmail.com]

On Mon, May 22, 2017 at 2:12 PM, Max Filippov <jcmvbkbc@gmail.com> wrote:
> Now that XCHAL_* macros don't have to be preprocessor constants add
> include/xtensa-dynconfig.h that defines them as fields of a structure
> returned from the xtensa_get_config function.
> Define that structure and fill it with default parameter values
> specified in the include/xtensa-config.h.
> Define reusable function xtensa_load_config that tries to load
> configuration and return an address of an exported object from it.
> Define the function xtensa_get_config that uses xtensa_load_config to
> get structure xtensa_config, either dynamically configured or the
> default.
>
> 2017-05-22  Max Filippov  <jcmvbkbc@gmail.com>
> bfd/
>         * Makefile.am (BFD32_BACKENDS, BFD32_BACKENDS_CFILES): Append
>         xtensa-config.c.
>         * Makefile.in: Regenerate.
>         * configure: Regenerate.
>         * configure.ac (xtensa_elf32_be_vec, xtensa_elf32_le_vec): Add
>         xtensa-config.lo to the tb.
>         * elf32-xtensa.c (xtensa-config.h): Replace #include with
>         xtensa-dynconfig.h.
>         * xtensa-config.c: New file.
>
> gas/
>         * config/tc-xtensa.c (xtensa-config.h): Replace #include with
>         xtensa-dynconfig.h.
>         * config/tc-xtensa.h: Likewise.
>         * config/xtensa-relax.c: Likewise.
>
> include/
>         * xtensa-dynconfig.h: New file.
>
> ld/
>         * Makefile.am (eelf32xtensa.c): Add $(INCDIR)/xtensa-dynconfig.h
>         to the list of dependencies.
>         * Makefile.in: Regenerate.
>         * emultempl/xtensaelf.em (xtensa-config.h): Replace #include
>         with xtensa-dynconfig.h.

This is ok.