600-arm-textrel.patch

這是一個實時嵌入式作業系統 實作了MCS51 ARM等MCU

http://sources.redhat.com/ml/binutils/2004-06/msg00010.html
--- binutils-2.15.90.0.3-old/bfd/elf32-arm.h	2004-04-12 14:56:33.000000000 -0500
+++ binutils-2.15.90.0.3/bfd/elf32-arm.h	2004-09-03 06:56:40.000000000 -0500
@@ -87,6 +87,8 @@
 #endif
 static bfd_boolean allocate_dynrelocs 
   PARAMS ((struct elf_link_hash_entry *h, PTR inf));
+static bfd_boolean elf32_arm_readonly_dynrelocs
+  PARAMS ((struct elf_link_hash_entry *, PTR));
 static bfd_boolean create_got_section 
   PARAMS ((bfd * dynobj, struct bfd_link_info * info));
 static bfd_boolean elf32_arm_create_dynamic_sections 
@@ -3531,6 +3533,37 @@
   return TRUE;
 }
 
+/* Find any dynamic relocs that apply to read-only sections.  */
+
+static bfd_boolean
+elf32_arm_readonly_dynrelocs (h, inf)
+     struct elf_link_hash_entry *h;
+     PTR inf;
+{
+  struct elf32_arm_link_hash_entry *eh;
+  struct elf32_arm_relocs_copied *p;
+
+  if (h->root.type == bfd_link_hash_warning)
+    h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
+  eh = (struct elf32_arm_link_hash_entry *) h;
+  for (p = eh->relocs_copied; p != NULL; p = p->next)
+    {
+      asection *s = p->section;
+
+      if (s != NULL && (s->flags & SEC_READONLY) != 0)
+       {
+         struct bfd_link_info *info = (struct bfd_link_info *) inf;
+
+         info->flags |= DF_TEXTREL;
+
+         /* Not an error, just cut short the traversal.  */
+         return FALSE;
+       }
+    }
+  return TRUE;
+}
+
 /* Set the sizes of the dynamic sections.  */
 
 static bfd_boolean
@@ -3740,6 +3773,12 @@
 	    return FALSE;
 	}
 
+      /* If any dynamic relocs apply to a read-only section,
+         then we need a DT_TEXTREL entry.  */
+      if ((info->flags & DF_TEXTREL) == 0)
+        elf_link_hash_traverse (&htab->root, elf32_arm_readonly_dynrelocs,
+                                (PTR) info);
+
       if ((info->flags & DF_TEXTREL) != 0)
 	{
 	  if (!add_dynamic_entry (DT_TEXTREL, 0))