FWIW, we're just disabling segmented stack in zinc for now exactly because of the same problem. I have a patch for llvm but I didn't really push it upstream hard enough.
On Tue, Dec 30, 2014 at 11:23 AM, Valerii Hiora <valerii.hi...@gmail.com> wrote: > Hi Tomi, > > > Anyone have any idea if that's a larger problem, or simply something > > nobody has written the small handcoded ASMs needed for ARMv5 or v4? > > If latter, I might be able to wrap my head around this. > > The problem you've got is related to segmented stack support. It need > fix on 2 levels: > > - Rust - can be relatively easy fixed by providing (or patching) a > target and marking it as a target which doesn't support segmented > stacks, see example [1] > > Once it works you can play a bit to provide a correct implementation > in record_sp.S and morestack.S > > - LLVM - as I remember some time ago LLVM generated a function prologue > which uses the same instruction for any ARM device, may be that was > patched in upstream, may be not. You can also ask Vladimir Pouzanov and > zinc.rs [2] team, AFAIK they had the similar problem too and definitely > have a workaround. > > [1] > > https://github.com/rust-lang/rust/blob/master/src/librustc_back/target/arm_apple_ios.rs#L33 > [2] https://zinc.rs/ > > -- > > Valerii > > > _______________________________________________ > Rust-dev mailing list > Rust-dev@mozilla.org > https://mail.mozilla.org/listinfo/rust-dev > > -- Sincerely, Vladimir "Farcaller" Pouzanov http://farcaller.net/
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