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

[PaX Team]

On 4 Nov 2012 at 12:04, Eli Friedman wrote:

> 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.

i didn't mean to submit these patches for inclusion, but more like a request for
comments/help on the approach in each. can you/anyone help me out there?