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/sysdeps/powerpc/powerpc64/power7/Makefile b/sysdeps/powerpc/powerpc64/power7/Makefile
index 54b0fd9aeeaeaf02ce95be6c375717cb59c6ca55..3e8fc29dba2e1b7fcd8c61ede64935b46918707d 100644 (file)
--- a/sysdeps/powerpc/powerpc64/power7/Makefile
+++ b/sysdeps/powerpc/powerpc64/power7/Makefile
@@ -1,6 +1,5 @@
 ifeq ($(subdir),elf)
-# Prevent the use of VSX instructions in _dl_start, which under -O3 optimization
+# Prevent the use of VSX registers in _dl_start, which under -O3 optimization
 # may require a TOC reference before relocations are resolved.
 CFLAGS-rtld.c = -mno-vsx
 endif
-