Support for PPC64le

[Richard-Rogalski]

Hello!

I'd like to get this working on PPC64. I tried getting something going, but all I get is this:

error[E0658]: inline assembly is not stable yet on this architecture
error: `clobber_abi` is not supported on this target

Looking at the loong PR, there's a way to to use the unstable inline assembly, but what about this clobber_abi thing? This has "only clobbers" under ppc, which makes me think it should work?

Also, would endianness matter here? I mostly want support for PPC64le, but would the same code work for PPC64(be)?

Thanks for any help!!

[Amanieu]

clobber_abi is optional, it's just a way to avoid listing all possible registers as clobbers. However it would be nice to have support for it added in the Rust compiler. As you can see in rust-lang/rust#111237, it's not too difficult.

Endianness does not matter here. For example, the ARM/AArch64 code works fine in either endianess.

[rheaplex]

@Richard-Rogalski heya did you get any further with this? 😺

[ky438]

@Amanieu - this issue seems outstanding; I just ran into this with an attempted build of coronsense 0.1.3 on ppc64le (Ubuntu 22.04 LTS on POWER9)

[Pratikt2312]

@Amanieu I also ran into the issues while attempting build of coronsense 0.1.4 on ppc64le arch. (Rhel 9.3). Are there any updates on adding support for ppc64le?

[Richard-Rogalski]

hello, i have a half complete PR for adding the necessary features into rustc. As far as i know, the only thing missing is tests, which I got too burnt out to finish. I’m not sure if I pushed my latest changes, I don’t think so. I’ll try to do that tonight, and if anyone wants to add the tests they’re more than welcome to Oct 8, 2024 at 05:52 by ***@***.***:

…

@Amanieu <https://github.com/Amanieu>> I also ran into the issues while attempting build of coronsense 0.1.4 on ppc64le arch. (Rhel 9.3). Are there any updates on adding support for ppc64le? — Reply to this email directly, > view it on GitHub <#18 (comment)>> , or > unsubscribe <https://github.com/notifications/unsubscribe-auth/ASR6C3KL45QKCLX7DQV5G4TZ2O2NZAVCNFSM6AAAAAAXZCMX6WVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDGOJZGUYTINZUHE>> . You are receiving this because you were mentioned.> Message ID: > <Amanieu/corosensei/issues/18/2399514749> @> github> .> com>

[Amanieu]

Thanks @Richard-Rogalski! I'd be happy to start reviewing your PR even if it's incomplete.

[Amanieu]

Actually there seems to be another PR for that: rust-lang/rust#131341

[ky438]

Is this fixed now? I see that the PR @Amanieu mentions is now merged?

[prasanna-marathe]

Hi, @Amanieu
corosensei build is still failing on ppc64le arch for command cargo build --target powerpc64le-unknown-linux-gnu

error: Unsupported target
   --> src/arch/mod.rs:168:9
    |
168 |         compile_error!("Unsupported target");
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: Unsupported target
   --> src/stack/valgrind.rs:100:9
    |
100 |         compile_error!("Unsupported target");
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Request to share if there is any further update Thanks.

[prasanna-marathe]

Hi @Richard-Rogalski
Are you able to build corosensei module on ppc64le. If yes can you please share steps to build it on ppc64le platform. Thanks.
I am facing issue with below error:

error: Unsupported target
   --> src/arch/mod.rs:168:9
    |
168 |         compile_error!("Unsupported target");
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: Unsupported target
   --> src/stack/valgrind.rs:100:9
    |
100 |         compile_error!("Unsupported target");
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Environment:

rustc -V

rustc 1.85.0 (4d91de4e4 2025-02-17)

cargo -V

cargo 1.85.0 (d73d2caf9 2024-12-31)

command used:
#cargo build --target powerpc64le-unknown-linux-gnu

[Amanieu]

Rust now has inline assembly support for PPC, but this crate still needs to be ported to PPC, including the inline assembly parts. I am not personally familiar with PPC assembly, but I am happy to mentor anyone who is interested in working on it. I would recommend using the AArch64 implementation as a baseline.

[prasanna-marathe]

Hi @Amanieu Thanks for reply. Sure we will continue to check on this.