[llvm-commits] new patches for compiling linux with integrated-as

[Eli Friedman]

On Sun, Nov 4, 2012 at 8:57 AM, PaX Team <pageexec at freemail.hu> wrote:
> hello folks,
>
> here's the latest batch of patches that are needed for compiling linux (the kernel).
>
> - .octa support: this is a GNU as keyword used by some crypto code in linux.
>   nothing changed since the last submission last spring, would be nice if someone
>   looked at it finally ;). as i said back then, this is a minimal implementation,
>   full 128 bit expression support would require way too many changes (APInt would
>   have to be used throughout in MCExpr).
>
> - more .cfi* support: linux makes use of 3 CFI directives not yet (fully) supported
>   by llvm.
>
>   .cfi_startproc simple: i added the 'simple' keyword recognition but a review is needed.
>
>   .cfi_undefined: new directive, it's only recognized, someone else will have to provide
>   a proper implementation in MCStreamer::EmitCFIUndefined.
>
>   .cfi_register: new directive, i think MCStreamer::EmitCFIRegister does what it
>   should do, but review (and help with fixing it up :) is needed.
>
> - more macro args changes: most of the macro default arg handling stuff is now in
>   llvm, these are the remaining bits in my tree that allow nesting and fix up whitespace
>   separated parameter handling and add some comments. right now one of the macro tests
>   fails, but i didn't figure out yet what i managed to overlook, help is appreciated :).
>
> - x86 signed reloc handling: as i said last time, llvm generates wrong code in linux
>   and short of someone figuring out how to properly recognize the affected insns, this
>   is a minimal fix.
>
> cheers,
>   PaX Team

Please send one patch per email.  Please include testcases in each patch.

-Eli