[PATCH] FreeBSD AArch64 support

[Andrew Turner]

On Wed, 12 Nov 2014 10:00:32 -0800
Tim Northover <t.p.northover at gmail.com> wrote:
> Hi Andrew,
> 
> On 12 November 2014 08:42, Andrew Turner <andrew at fubar.geek.nz> wrote:
> > I've run check-all before and after this change and found the same
> > two tests failing. I can also add new FreeBSD/AArch64 specific
> > tests if anyone has a suggestion which to add.
> 
> That would be a good idea. The key places I'd suggest are
> test/Driver/freebsd.c (which seems to be testing the backend
> command-line for OS-specific details like the dynamic loader, crt
> files and so on), and test/Preprocessor/init.c which tests for the
> predefines you want to see, and some other ABI issues (Is char signed?
> What is size_t? What is wchar_t? ...).
These should be as described in the AArch64 ABI documentation. There
should be no need to differ without a good reason.

I've attached an updated patch with the above tests added.

> 
> I'm afraid I've no idea what specific ABI details FreeBSD is adopting
> for AArch64, so you might have to check against GCC or whatever the
> canonical compiler is. Or ask on some BSD list.

I am free, within reason, to set the specifics of the ABI FreeBSD will
adopt as I'm working on porting FreeBSD to AArch64. I am also the
author of the GCC FreeBSD AArch64 changes. I expect FreeBSD will use
clang as the canonical compiler for AArch64.

Andrew
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