C#•14mo ago

❔ Issue loading assembly on custom runtime host [Android ARM64]

hey everyone, hopefully im fine to ask this here since it's a pretty specific question i'm trying to port a unity mod loader to android which sets up a .net runtime with a custom rust assembly i've gotten to a point where the c# code does run, but once it's finished, everything crashes i've figured out that it is due to this function call if i remove all the code after that (other than the Ok(()) for error handling), it crashes, but if i comment out that line, it runs fine there isn't a stacktrace from any side, but i attached the logcat/corehost trace just in case the same code works perfectly fine in windows x64 so this is specific to either linux-bionic or arm64

dotnet.txt

4 Replies

trevOP•14mo ago

also as part of my testing, i completely emptied the dll it's loading, so no .net code should be messing it up

trevOP•14mo ago

i ended up following the microsoft guide here and rewrote it in rust it seems like the crash is caused by this in step 2 (unless i just did some part of the implementation wrong, which is likely)

rc = get_delegate_fptr(
        hostfxr_cxt,
        hostfxr_delegate_type::hdt_load_assembly_and_get_function_pointer,
        &mut load_assembly_and_get_function_pointer
    );

rc = get_delegate_fptr(
        hostfxr_cxt,
        hostfxr_delegate_type::hdt_load_assembly_and_get_function_pointer,
        &mut load_assembly_and_get_function_pointer
    );

Write a custom .NET runtime host - .NET

Learn to host the .NET runtime from native code to support advanced scenarios that require controlling how the .NET runtime works.

trevOP•14mo ago

after playing around a bit more, it's definitely due to calling hostfxr_get_runtime_delegate, which is especially odd since if i uncomment the rest of the code, it waits until it's done to die

Accord•14mo ago

Looks like nothing has happened here. I will mark this as stale and this post will be archived until there is new activity.

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❔ Issue loading assembly on custom runtime host [Android ARM64]