microblaze: apply toolchain patches from meta-xilinx repository #984
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Re-do of #647
This patchset fixes many known issues on gnu-toolchain for microblaze.
But mainly the broken right-shift optimization and binutils incorrect (linker) relocation issues.
Patches obtained from https://github.com/xilinx/meta-xilinx/
These patchsets fixes many known issues on gnu-toolchain for microblaze.
But mainly the atomic-cas and binutils incorrect relocation issues.
Patches obtained from https://github.com/xilinx/meta-xilinx/ repository,
Sub PRs:
Finally; if/when AMD/Xilinx software group manages to upstream these to gnu-gcc, the squashed commits in individual repositories should provide an easy transition (revert and rebase) when it's time to upgrade zephyr-gcc.