source: scripts/patch/binutils/2.19.1/20-relaxed_ld_powerpc.patch@ 2cbdaf1

ld/emultempl/ppc32elf.em

@@ -112 +112 @@
             }
         }
     }
+
   gld${EMULATION_NAME}_before_allocation ();
+
+  /* Turn on relaxation if executable sections have addresses that
+     might make branches overflow.  */
+  if (!command_line.relax)
+    {
+      bfd_vma low = (bfd_vma) -1;
+      bfd_vma high = 0;
+      asection *o;
+
+      /* Run lang_size_sections (if not already done).  */
+      if (expld.phase != lang_mark_phase_enum)
+        {
+          expld.phase = lang_mark_phase_enum;
+          expld.dataseg.phase = exp_dataseg_none;
+          one_lang_size_sections_pass (NULL, FALSE);
+          lang_reset_memory_regions ();
+        }
+
+      for (o = link_info.output_bfd->sections; o != NULL; o = o->next)
+        {
+          if ((o->flags & (SEC_ALLOC | SEC_CODE)) != (SEC_ALLOC | SEC_CODE))
+            continue;
+          if (o->size == 0)
+            continue;
+          if (low > o->vma)
+            low = o->vma;
+          if (high < o->vma + o->size - 1)
+            high = o->vma + o->size - 1;
+        }
+      if (high > low && high - low > (1 << 25) - 1)
+        command_line.relax = TRUE;
+    }
 }
 
 EOF