[PATCH] PowerPC64 - Disable VSX usage in rtld.c to prevent TOC ref before relocs are resolved.

[Ryan Arnold]

On Tue, 2011-02-15 at 23:59 +0100, Andreas Schwab wrote: 
> Ryan Arnold <rsa@us.ibm.com> writes:
> 
> > diff --git a/sysdeps/powerpc/powerpc64/power7/Makefile b/sysdeps/powerpc/powerpc64/power7/Makefile
> > new file mode 100644
> > index 0000000..54b0fd9
> > --- /dev/null
> > +++ b/sysdeps/powerpc/powerpc64/power7/Makefile
> > @@ -0,0 +1,5 @@
> > +ifeq ($(subdir),elf)
> > +# Prevent the use of VSX registers and insns in _dl_start, which under -O3
> > +# optimization may require a TOC reference before relocations are resolved.
> > +CFLAGS-rtld.c = -mno-vsx
> 
> Please use +=.
> 
> Andreas.

Corrected, I started testing this in elf/Makefile and neglected the + when I moved it into the power7 directory.

Regards,
Ryan

2011-02-15  Ryan S. Arnold  <rsa@us.ibm.com>

	* sysdeps/powerpc/powerpc64/power7/Makefile: New file which adds
	-mno-vsx to the CFLAGS-rtld.c variable to avoid using VSX registers and
	insns in _dl_start to prevent a TOC reference before relocs are
	resolved.

diff --git a/sysdeps/powerpc/powerpc64/power7/Makefile b/sysdeps/powerpc/powerpc64/power7/Makefile
new file mode 100644
index 0000000..54b0fd9
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/power7/Makefile
@@ -0,0 +1,5 @@
+ifeq ($(subdir),elf)
+# Prevent the use of VSX registers and insns in _dl_start, which under -O3
+# optimization may require a TOC reference before relocations are resolved.
+CFLAGS-rtld.c += -mno-vsx
+endif