From 8130708fe5419b8bb17cfeb646678ac431ec797d Mon Sep 17 00:00:00 2001 From: "Ryan S. Arnold" Date: Wed, 16 Feb 2011 13:04:16 -0600 Subject: Prevent VSX type TOC ref in _dl_start before relocs are resolved. Disable VSX instruction usage in rtld.c with -mno-vsx so that, under -O3 optimization, a TOC reference isn't used for a zero constant in a VSX register prior to resolution of relocations. --- ChangeLog | 7 +++++++ sysdeps/powerpc/powerpc64/power7/Makefile | 5 +++++ 2 files changed, 12 insertions(+) create mode 100644 sysdeps/powerpc/powerpc64/power7/Makefile diff --git a/ChangeLog b/ChangeLog index 65c45fe168..1ba0ee51da 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,10 @@ +2011-02-16 Ryan S. Arnold + + * 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. + 2010-11-10 Luis Machado * sysdeps/ieee754/ldbl-128ibm/e_sqrtl.c (__ieee754_sqrtl): Force diff --git a/sysdeps/powerpc/powerpc64/power7/Makefile b/sysdeps/powerpc/powerpc64/power7/Makefile new file mode 100644 index 0000000000..b0f45205b9 --- /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 -- cgit 1.4.1