Add Alpha architecture

[R33v0LT]

This PR adds Alpha (auto-sync) architecture for capstone

New Features

• capstone support for alpha architecture
• alpha python bindings
• new tests (c/python)
• alpha support in Updater (auto-sync)

[Rot127]

Looks good so far. Nice work!

[XVilka]

Don't forget to add yourself in CREDITS.TXT

[XVilka]

@R33v0LT since ARM was merged into next, and @Rot127 updated PPC, please update this PR too.

[Rot127]

Generally looks good so far. Please don't forget to set the details of each operand (read/write access and the like).
You can look at the PPC implementation for an example

[Rot127]

@R33v0LT You need to rebase again. @kabeor purged the test_aarch64 binary from the commit history. So it was rewritten, this is why you've got +2k commits here

[XVilka]

@kabeor could you please approve workflows to run?
@R33v0LT why removing it from fuzzing? Technically it should be crash-free too.

[R33v0LT]

@kabeor could you please approve workflows to run? @R33v0LT why removing it from fuzzing? Technically it should be crash-free too.

I mistakenly thought that fuzzing tests were related to llvm-mc. Fixed it

[R33v0LT]

@Rot127, please take a look again. @kabeor could you please allow workflows to run?

@R33v0LT What is still missing? Why this is still a draft?

I can't figure out why python bindings are broken. As soon as I figure it out, I'll remove it from the draft

[XVilka]

@R33v0LT I suppose it's not a draft anymore. Please remove the mark also update the PR description. @Rot127, please take a look again.

[Rot127]

Thanks a lot! It looks very good!

Besides the few comments from above, please do the following before it can be merged:

Fuzz it a little more:

Apply the patch from here and test every byte combination for segfaults by running:

./cstool -d tc162 0 0xffffffff  # With details enabled
./cstool -d tc162 0 0xffffffff  # Without details

This way our chances for nasty surprises is lower.

Update the new updater

I replaced the Update-Arch.sh script with a proper Python scripts.
You need to add Alpha there and can drop the Update-Arch.sh change.

In suite/auto-sync/Updater/ you need to:

• Add Alpha to parse_args() in ASUpdater.py, CppTranslator.py and Differ.py
• Add a configuration for Alpha in suite/auto-sync/CppTranslator/arch_config.json. The config file is documented in CppTranslator/README.md.
• Run the complete update procedure. It will fail at some point and you need to add some things to the Python scripts (e.g. to CppTranslator/Patches/Includes.py). Don't worry though, there shouldn't be many.

Also, I think the docs are still a confusingly written. And I update them in #2217.

Please, if you have any suggestions or run against walls, let me know. So this stuff can be made easier.

@XVilka @kabeor This last point (updating the updater) could be also moved into a separated PR. Just in case it should be merged earlier.

[XVilka]

@kabeor could you please allow workflows to run again? Also, mark it as "ready for review"?

[XVilka]

LGTM as is. @R33v0LT Have you run the fuzzing?

[R33v0LT]

LGTM as is. @R33v0LT Have you run the fuzzing?

In progress

[R33v0LT]

@XVilka, @Rot127, Fuzzing completed without fails

[XVilka]

Ok, @kabeor @aquynh if you have no objections, this one is ready to merge too.

[Rot127]

@kabeor Please take a look when you find time.

[XVilka]

@kabeor @aquynh have you had a chance to look at it?

[kabeor]

It is really awesome, merged, thank you!