[RFC PATCH 0/8] Module and ARM Module updates and fixes

[David Dgien <dgienda125@gmail.com>]

This series fixes various bugs and bit-rot issues with the module
loading code. It also ports a couple of modules features from the Linux
kernel: arch specific section fixups, and module PLTs for ARM modules,
to contain veneers for 'bl' instructions.

There are two things in this series I'm looking for feedback on:
Linux implements module_frob_arch_sections as a weak symbol for the
default case. I didn't see any other "weak" functions in barebox, so I
wasn't sure if using that was acceptable. Since the Kconfig
HAVE_MOD_ARCH_SPECIFIC already exists as part of the change, I just used
that to define a static inline default implementation, but using a weak
function would make that slightly cleaner.

And in the patch that added the init macros to module.h, I wasn't sure
if it would be okay to pollute init.h with the #ifndef MODULE
directives, so instead I just #undef'd all of the initcalls before
redefining them in module.h.  If it's okay to add the #ifndef MODULE to
init.h, that would be significantly cleaner than the current
implementation.

David Dgien (8):
  Makefile: Initialize and export KBUILD variables
  module: Add init macros to module.h
  module: Fix adding module to list after layout
  module: Fix module command registration
  module: Implement HAVE_MOD_ARCH_SPECIFIC
  arm: makefile: Fix compiler flag variable
  arm: elf: Add THM relocation types
  arm: module: Allow modules outside of bl range

 Makefile                      |  12 +-
 arch/arm/Kconfig              |  15 +++
 arch/arm/Makefile             |   6 +-
 arch/arm/cpu/Kconfig          |   1 +
 arch/arm/include/asm/elf.h    |   3 +
 arch/arm/include/asm/module.h |  44 ++++++-
 arch/arm/lib32/Makefile       |   1 +
 arch/arm/lib32/module-plts.c  | 229 ++++++++++++++++++++++++++++++++++
 arch/arm/lib32/module.c       |  14 +++
 arch/arm/lib32/module.lds     |   4 +
 common/Kconfig                |   8 ++
 common/module.c               |  60 +++++----
 include/asm-generic/module.h  |  49 ++++++++
 include/module.h              | 109 ++++++++++++++++
 14 files changed, 523 insertions(+), 32 deletions(-)
 create mode 100644 arch/arm/lib32/module-plts.c
 create mode 100644 arch/arm/lib32/module.lds
 create mode 100644 include/asm-generic/module.h

-- 
2.27.0


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