From: Ryan S. Arnold Date: Tue, 15 Feb 2011 15:50:09 +0000 (-0600) Subject: Prevent VSX type TOC ref in _dl_start before relocs are resolved. X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c3b77b811fc7106a4cc9d491c1cc9358fb266c42;p=thirdparty%2Fglibc.git 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. --- diff --git a/ChangeLog b/ChangeLog index 65c45fe1686..77b9927e1f4 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2011-02-14 Ryan S. Arnold + + * sysdeps/powerpc/powerpc64/power7/Makefile (CFLAGS-rtld.c): Add + -mno-vsx to prevent GCC from using a VSX register and a TOC + reference before relocations are resolved under -O3 optimization. + 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 00000000000..54b0fd9aeea --- /dev/null +++ b/sysdeps/powerpc/powerpc64/power7/Makefile @@ -0,0 +1,6 @@ +ifeq ($(subdir),elf) +# Prevent the use of VSX instructions in _dl_start, which under -O3 optimization +# may require a TOC reference before relocations are resolved. +CFLAGS-rtld.c = -mno-vsx +endif +