Disable VSX usage in rtld.c to prevent TOC ref before relocs are resolved.

(cherry picked from commit 2206397e1c46f69fb20eeb3de1920d3a7014c325)

diff --git a/ChangeLog b/ChangeLog
index 6a57302c953fd63db145a90f35ac8309c949b347..151753ef261f28f84a1a19cda49e905ead79ec05 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+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.
+
 2011-02-02  Ulrich Drepper  <drepper@gmail.com>
 
        * elf/dl-runtime.c (_dl_call_pltexit): Pass correct address of the

diff --git a/sysdeps/powerpc/powerpc64/power7/Makefile b/sysdeps/powerpc/powerpc64/power7/Makefile
new file mode 100644 (file)
index 0000000..b0f4520
--- /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