objc_msgSend for ARM contains text relocations

Question

objc_msgSend for ARM contains text relocations

Closed this issue 6 years ago · 7 comments

Text relocations are no longer supported on Android with API level >= 23, so libobjc2 can currently not be used on that platform due to text relocations in objc_msgSend.arm.S.

We’d love to see this fixed in the official release. My assembly knowledge is unfortunately lacking, but if there’s anything else we can do to make this happen (e.g. testing) please let me know. Thanks!

Answer 1 · 2019-03-21T09:27:57.000Z

@davidchisnall I know you’ve been working with @gcasa on a patch for this, but unfortunately we found that it breaks support for small int classes.

Answer 2 · 2019-03-21T09:48:39.000Z

I need to set up an ARM emulator image to debug this on. The fix is very simple, but quite fiddly.

Answer 3 · 2019-03-21T10:00:40.000Z

Thanks. Feel free to get in touch if an actual device would make this easier, you can find my email in the git history. :)

Answer 4 · 2019-03-21T10:29:49.000Z

If you've got a device with clang and the libobjc2 sources installed that I can ssh into, that would be great.

Answer 5 · 2019-03-21T11:19:19.000Z

We don’t have a way to set that up with public access, but we could probably sponsor you a device. Feel free to send me an email if that would help.

Answer 6 · 2019-04-01T11:13:25.000Z

Thank you David! Much appreciated.

Answer 7 · 2019-04-01T12:19:40.000Z

Are you able to test the AArch64 version in #97?