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[packages/trusty/cirros-testvm.git] / cirros-testvm / src-cirros / buildroot-2015.05 / package / binutils / 2.23.2 / 911-xtensa-fix-localized-symbol-refcounting-with-gc-sect.patch

diff --git a/cirros-testvm/src-cirros/buildroot-2015.05/package/binutils/2.23.2/911-xtensa-fix-localized-symbol-refcounting-with-gc-sect.patch b/cirros-testvm/src-cirros/buildroot-2015.05/package/binutils/2.23.2/911-xtensa-fix-localized-symbol-refcounting-with-gc-sect.patch
new file mode 100644 (file)
index 0000000..9ad6b3b
--- /dev/null
+++ b/cirros-testvm/src-cirros/buildroot-2015.05/package/binutils/2.23.2/911-xtensa-fix-localized-symbol-refcounting-with-gc-sect.patch
@@ -0,0 +1,57 @@
+From 8ec76b16f62d1bf386fb2c39af5f66c3afddc5cb Mon Sep 17 00:00:00 2001
+From: Max Filippov <jcmvbkbc@gmail.com>
+Date: Thu, 14 May 2015 05:22:55 +0300
+Subject: [PATCH] xtensa: fix localized symbol refcounting with --gc-sections
+
+elf_xtensa_gc_sweep_hook doesn't correctly unreference symbols that were
+made local, that results in link failure with the following message:
+
+  BFD (GNU Binutils) 2.24 internal error, aborting at elf32-xtensa.c line
+  3372 in elf_xtensa_finish_dynamic_sections
+
+elf_xtensa_gc_sweep_hook determines symbol reference type (PLT or GOT) by
+relocation type. Relocation types are not changed when symbol becomes
+local, but its PLT references are added to GOT references and
+plt.refcount is set to 0. Such symbol cannot be unreferences in the
+elf_xtensa_gc_sweep_hook and its extra references make calculated GOT
+relocations section size not match number of GOT relocations.
+
+Fix it by treating PLT reference as GOT reference when plt.refcount is
+not positive.
+
+2015-05-14  Max Filippov  <jcmvbkbc@gmail.com>
+bfd/
+       * elf32-xtensa.c (elf_xtensa_gc_sweep_hook): Treat PLT reference
+       as GOT reference when plt.refcount is not positive.
+
+Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
+---
+Backported from: e6c9a083ec5ae7a45bd71682b26aae1939849388
+Changes to ChangeLog are dropped.
+
+ bfd/elf32-xtensa.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/bfd/elf32-xtensa.c b/bfd/elf32-xtensa.c
+index 53af1c6..2523670 100644
+--- a/bfd/elf32-xtensa.c
++++ b/bfd/elf32-xtensa.c
+@@ -1360,10 +1360,14 @@ elf_xtensa_gc_sweep_hook (bfd *abfd,
+       {
+         if (is_plt)
+           {
++            /* If the symbol has been localized its plt.refcount got moved
++               to got.refcount.  Handle it as GOT.  */
+             if (h->plt.refcount > 0)
+               h->plt.refcount--;
++            else
++              is_got = TRUE;
+           }
+-        else if (is_got)
++        if (is_got)
+           {
+             if (h->got.refcount > 0)
+               h->got.refcount--;
+-- 
+1.8.1.4
+