binutils/2.22: backport an upstream fix for an assertion in the ARM backend.

See http://sourceware.org/bugzilla/show_bug.cgi?id=13990 for more details.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
SVN-Revision: 34260

diff --git a/toolchain/binutils/patches/2.22/500-arm_ld_assert_fix.patch b/toolchain/binutils/patches/2.22/500-arm_ld_assert_fix.patch
new file mode 100644 (file)
index 0000000..25e26db
--- /dev/null
+++ b/toolchain/binutils/patches/2.22/500-arm_ld_assert_fix.patch
@@ -0,0 +1,28 @@
+See http://sourceware.org/bugzilla/show_bug.cgi?id=13990 for details.
+---
+diff -u -r1.287 -r1.288
+--- a/bfd/elf32-arm.c  2012/04/24 05:12:31     1.287
++++ b/bfd/elf32-arm.c  2012/04/24 16:09:12     1.288
+@@ -12256,8 +12256,19 @@
+       if (may_need_local_target_p
+         && elf32_arm_get_plt_info (abfd, eh, r_symndx, &root_plt, &arm_plt))
+       {
+-        BFD_ASSERT (root_plt->refcount > 0);
+-        root_plt->refcount -= 1;
++        /* If PLT refcount book-keeping is wrong and too low, we'll
++           see a zero value (going to -1) for the root PLT reference
++           count.  */
++        if (root_plt->refcount >= 0)
++          {
++            BFD_ASSERT (root_plt->refcount != 0);
++            root_plt->refcount -= 1;
++          }
++        else
++          /* A value of -1 means the symbol has become local, forced
++             or seeing a hidden definition.  Any other negative value
++             is an error.  */
++          BFD_ASSERT (root_plt->refcount == -1);
+ 
+         if (!call_reloc_p)
+           arm_plt->noncall_refcount--;
+