Re: [Gc] iOS ARM64 (Aarch64) support

 Hi Niklas,

I have refactored your code, merged with recent master and added DARWIN_EXC_STATE definitions (for MPROTECT_VDB) -  https://github.com/ivmai/bdwgc/tree/ios-unified-ts-fix
Could you please recheck it on iOS/arm64?

STACKBOTTOM is redefined from to pthread_get_stackaddr_np (unless you define NO_PTHREAD_GET_STACKADDR_NP) - it should be always safer than use of hard-coded value (e.g. hard-coded value will not work for non-main thread).

Regards,
Ivan


Monday, 22 Dec 2014, 8:41 +01:00 from Niklas Therning <[email protected]>:
>Hi,
>
>We've made a first attempt [1] at porting the GC to iOS ARM64
>(Aarch64) and so far it seems to be working fine. Wanted to check
>whether someone else is working on this as well?
>
>One initial problem we had was what we'd set STACKBOTTOM to. The value
>for iOS 32-bit seemed totally arbitrary. But AFAICS, for Darwin, the
>actual value for STACKBOTTOM is ignored and instead it's set to the
>expression (ptr_t)pthread_get_stackaddr_np(pthread_self()) in
>os_dep.c. Can someone please confirm that this is indeed what happens
>for OS X/iOS?
>
>Please let me know whether you'd be interested in merging this and
>I'll send a PR.
>
>[1]  https://github.com/robovm/bdwgc/commit/a583a080fd9bd57927190dfa090ad281ddc931d5
>
>Regards,
>Niklas
>RoboVM
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