Re: [Qemu-devel] [PATCH Risu v2 2/3] configure: Add initial support to PPC64 (big endian)

[joserz@linux.vnet.ibm.com]

On Mon, Mar 13, 2017 at 12:10:10PM +0100, Peter Maydell wrote:
> On 9 March 2017 at 19:38, Jose Ricardo Ziviani
> <joserz@linux.vnet.ibm.com> wrote:
> > This commit set Makefile to point to ppc64le source for both archs
> > (ppc64 and ppc64le) because they do the exact same thing. The
> > difference is in risugen and how the binary is build.
> 
> If we're going to share a single set of source files for ppc64le
> and ppc64 (which makes sense) then I think we should use ARCH=ppc64
> for that, and rename the 'ppc64le' source files to 'ppc64'.
> 

Your idea makes more sense. I'll  do that and send another patch
tomorrow morning.

Thank you Peter!

> The rest of these patches look OK.
> 
> > Signed-off-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com>
> > ---
> >  configure | 9 ++++-----
> >  1 file changed, 4 insertions(+), 5 deletions(-)
> >
> > diff --git a/configure b/configure
> > index 055e6d6..dd64d8b 100755
> > --- a/configure
> > +++ b/configure
> > @@ -51,11 +51,7 @@ guess_arch() {
> >      elif check_define __aarch64__ ; then
> >          ARCH="aarch64"
> >      elif check_define __powerpc64__ ; then
> > -        if check_define __BIG_ENDIAN__; then
> > -            ARCH="ppc64"
> > -        else
> > -            ARCH="ppc64le"
> > -        fi
> > +        ARCH="ppc64le"
> >      else
> >          echo "This cpu is not supported by risu. Try -h. " >&2
> >          exit 1
> > @@ -127,6 +123,9 @@ OBJDUMP="${OBJDUMP-${CROSS_PREFIX}objdump}"
> >
> >  if test "x${ARCH}" = "x"; then
> >      guess_arch
> > +elif test "x${ARCH}" = "xppc64"; then
> > +    # ppc64 and ppc64le uses the same C source code
> > +    ARCH="ppc64le"
> >  fi
> >
> >  generate_makefilein
> > --
> > 2.7.4
> >
> 
> Incidentally, maybe we should just drop support for
> specifying ARCH= manually to configure. I can't really
> see a use case where the auto-detection won't do the
> right thing.
> 
> thanks
> -- PMM
>