Re: as cannot do endbr64 instructions (too old)

On Mon, Jan 01, 2024 at 10:00:34AM +0100, Lorenz (xha) wrote:

> On Sun, Dec 31, 2023 at 03:39:14PM +0100, Otto Moerbeek wrote:
> > On Sun, Dec 31, 2023 at 04:51:14AM +0100, Lorenz (xha) wrote:
> >
> > > hi misc@,
> > >
> > > like the subject says, `as` in the base system cannot do endbr64
> > > instructions. should it be updated?
> > >
> > > background: i am maintaining hare for openbsd and we always have
> > > to install "gas" from the "binutils" package because the normal one
> > > is too old. i'd be nice if we don't depend on any packages from
> > > ports and don't have some specific workarounds in hare just for
> > > openbsd because "as" is too old.
> > >
> > > if updating "as" is not an option, is there a way to invoke the
> > > llvm assembler directly in the base system?
> > >
> > > thanks.
> > >
> > > - lorenz
> > >
> >
> > cc will assesmbly a .s or .S file.
> >
>
> it looks like cc cannot combine multiple assembly files into one. this
> is a simplified version of the command line:
>
> $(AS) -o example.o example_a.s example_b.s
>
> it works when defining "AS = gas", but not when doing "AS = cc -c":
>
> "cc: error: cannot specify -o when generating multiple output files"
>
> is there a way to do this with llvm?

Assemble the files individually and link them? Concat and assemble?

>
> why is "as" so old?

-Otto