Segmented Stack support for X64-MinGW

[Reid Kleckner]

Thanks!  Committed in r205342.


On Mon, Mar 31, 2014 at 9:36 PM, klutzy <klutzytheklutzy at gmail.com> wrote:

> Hello, klutzy here. :)
> I'm ok with committing the patch to upstream. Thanks for review!
> 2014/04/01 11:44 "Reid Kleckner" <rnk at google.com>:
>
> The patch looks good, and I'll commit if klutzy acknowledges on
>> llvm-commits that they want it upstream.  I just want to comply with the
>> attribution policy:
>> http://llvm.org/docs/DeveloperPolicy.html#attribution-of-changes
>>
>> I'm not sure how wise it is to touch pvArbitrary, but hey, we do it for
>> 32-bit.  *shrug*
>>
>>
>> On Mon, Mar 31, 2014 at 5:04 PM, Alex Crichton <alex at crichton.co> wrote:
>>
>>> As part of the ongoing effort to upstream the patches that we're using
>>> with the Rust language, this is a patch which adds support for
>>> segmented stacks on 64-bit windows using MinGW. The original author
>>> was @klutzy on GitHub [1], and I've just added some tests to it.
>>>
>>> The implementation is the same as the 32-bit windows implementation by
>>> assuming that the stack limit is in the TIB's arbitrary data slot [2].
>>> The location of the TIB is slightly different, being pointed to by %gs
>>> instead of %fs [3].
>>>
>>> If anything else is required, please just let me know!
>>>
>>> [1] - https://github.com/rust-lang/llvm/commit/12d885
>>> [2] - http://en.wikipedia.org/wiki/Win32_Thread_Information_Block
>>> [3] - http://en.wikipedia.org/wiki/X86-64
>>>
>>> _______________________________________________
>>> llvm-commits mailing list
>>> llvm-commits at cs.uiuc.edu
>>> http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
>>>
>>>
>>
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