[RFC] Abstract the target endianness with a macro #21
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Only a few changes are needed to swap the target instruction endianness. Most of these places are already conditional on the host endianness, but the changes are not completely overlapping. Add a macro for the target endianness so it can be swapped out. In the future, this choice could come from the config file, but that requires more refactoring. Signed-off-by: Samuel Holland <samuel@sholland.org>
stffrdhrn
reviewed
Jun 21, 2022
| #endif /* ULONGEST */ | ||
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| /* Endianness convenience macros */ | ||
| #define TARGET_BIG_ENDIAN |
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To switch this to little endian you just remove this line? I think just adding a comment explaining the purpose of the TARGET_BIG_ENDIAN macro should be good enough.
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In addition to running code on the AR100 in little-endian mode, this is how I tested my little-endian toolchain patches. I'm not sure if this is worth merging in its current state, but at least it documents what parts of the code would need to be changed.
Only a few changes are needed to swap the target instruction endianness.
Most of these places are already conditional on the host endianness, but
the changes are not completely overlapping. Add a macro for the target
endianness so it can be swapped out.
In the future, this choice could come from the config file, but that
requires more refactoring.
Signed-off-by: Samuel Holland samuel@sholland.org