X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=bfd%2Felf-attrs.c;h=9a6ff6f910997ac7655950971d0dcee3f059004a;hb=d301a56b4040e9f08152e414a94dcd5c79afddbb;hp=b9d3bf2fe4eca12e81476090b38b2e5fae3fa4ae;hpb=3de4a297ec739ba0111d80a5b9060d9bffc2d899;p=deliverable%2Fbinutils-gdb.git

diff --git a/bfd/elf-attrs.c b/bfd/elf-attrs.c
index b9d3bf2fe4..9a6ff6f910 100644
--- a/bfd/elf-attrs.c
+++ b/bfd/elf-attrs.c
@@ -1,5 +1,5 @@
 /* ELF attributes support (based on ARM EABI attributes).
-   Copyright 2005, 2006, 2007, 2009, 2010
+   Copyright 2005, 2006, 2007, 2009, 2010, 2012
    Free Software Foundation, Inc.
 
    This file is part of BFD, the Binary File Descriptor library.
@@ -347,6 +347,10 @@ _bfd_elf_copy_obj_attributes (bfd *ibfd, bfd *obfd)
   int i;
   int vendor;
 
+  if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
+      || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
+    return;
+
   for (vendor = OBJ_ATTR_FIRST; vendor <= OBJ_ATTR_LAST; vendor++)
     {
       in_attr
@@ -428,7 +432,7 @@ _bfd_elf_parse_attributes (bfd *abfd, Elf_Internal_Shdr * hdr)
   bfd_byte *contents;
   bfd_byte *p;
   bfd_vma len;
-  const char *std_section;
+  const char *std_sec;
 
   contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
   if (!contents)
@@ -440,7 +444,7 @@ _bfd_elf_parse_attributes (bfd *abfd, Elf_Internal_Shdr * hdr)
       return;
     }
   p = contents;
-  std_section = get_elf_backend_data (abfd)->obj_attrs_vendor;
+  std_sec = get_elf_backend_data (abfd)->obj_attrs_vendor;
   if (*(p++) == 'A')
     {
       len = hdr->sh_size - 1;
@@ -455,11 +459,11 @@ _bfd_elf_parse_attributes (bfd *abfd, Elf_Internal_Shdr * hdr)
 	  if (section_len > len)
 	    section_len = len;
 	  len -= section_len;
-	  namelen = strlen ((char *)p) + 1;
+	  namelen = strlen ((char *) p) + 1;
 	  section_len -= namelen + 4;
-	  if (std_section && strcmp ((char *)p, std_section) == 0)
+	  if (std_sec && strcmp ((char *) p, std_sec) == 0)
 	    vendor = OBJ_ATTR_PROC;
-	  else if (strcmp ((char *)p, "gnu") == 0)
+	  else if (strcmp ((char *) p, "gnu") == 0)
 	    vendor = OBJ_ATTR_GNU;
 	  else
 	    {
@@ -586,3 +590,114 @@ _bfd_elf_merge_object_attributes (bfd *ibfd, bfd *obfd)
 
   return TRUE;
 }
+
+/* Merge an unknown processor-specific attribute TAG, within the range
+   of known attributes, from IBFD into OBFD; return TRUE if the link
+   is OK, FALSE if it must fail.  */
+
+bfd_boolean
+_bfd_elf_merge_unknown_attribute_low (bfd *ibfd, bfd *obfd, int tag)
+{
+  obj_attribute *in_attr;
+  obj_attribute *out_attr;
+  bfd *err_bfd = NULL;
+  bfd_boolean result = TRUE;
+
+  in_attr = elf_known_obj_attributes_proc (ibfd);
+  out_attr = elf_known_obj_attributes_proc (obfd);
+
+  if (out_attr[tag].i != 0 || out_attr[tag].s != NULL)
+    err_bfd = obfd;
+  else if (in_attr[tag].i != 0 || in_attr[tag].s != NULL)
+    err_bfd = ibfd;
+
+  if (err_bfd != NULL)
+    result
+      = get_elf_backend_data (err_bfd)->obj_attrs_handle_unknown (err_bfd, tag);
+
+  /* Only pass on attributes that match in both inputs.  */
+  if (in_attr[tag].i != out_attr[tag].i
+      || (in_attr[tag].s == NULL) != (out_attr[tag].s == NULL)
+      || (in_attr[tag].s != NULL && out_attr[tag].s != NULL
+	  && strcmp (in_attr[tag].s, out_attr[tag].s) != 0))
+    {
+      out_attr[tag].i = 0;
+      out_attr[tag].s = NULL;
+    }
+
+  return result;
+}
+
+/* Merge the lists of unknown processor-specific attributes, outside
+   the known range, from IBFD into OBFD; return TRUE if the link is
+   OK, FALSE if it must fail.  */
+
+bfd_boolean
+_bfd_elf_merge_unknown_attribute_list (bfd *ibfd, bfd *obfd)
+{
+  obj_attribute_list *in_list;
+  obj_attribute_list *out_list;
+  obj_attribute_list **out_listp;
+  bfd_boolean result = TRUE;
+
+  in_list = elf_other_obj_attributes_proc (ibfd);
+  out_listp = &elf_other_obj_attributes_proc (obfd);
+  out_list = *out_listp;
+
+  for (; in_list || out_list; )
+    {
+      bfd *err_bfd = NULL;
+      int err_tag = 0;
+
+      /* The tags for each list are in numerical order.  */
+      /* If the tags are equal, then merge.  */
+      if (out_list && (!in_list || in_list->tag > out_list->tag))
+	{
+	  /* This attribute only exists in obfd.  We can't merge, and we don't
+	     know what the tag means, so delete it.  */
+	  err_bfd = obfd;
+	  err_tag = out_list->tag;
+	  *out_listp = out_list->next;
+	  out_list = *out_listp;
+	}
+      else if (in_list && (!out_list || in_list->tag < out_list->tag))
+	{
+	  /* This attribute only exists in ibfd. We can't merge, and we don't
+	     know what the tag means, so ignore it.  */
+	  err_bfd = ibfd;
+	  err_tag = in_list->tag;
+	  in_list = in_list->next;
+	}
+      else /* The tags are equal.  */
+	{
+	  /* As present, all attributes in the list are unknown, and
+	     therefore can't be merged meaningfully.  */
+	  err_bfd = obfd;
+	  err_tag = out_list->tag;
+
+	  /*  Only pass on attributes that match in both inputs.  */
+	  if (in_list->attr.i != out_list->attr.i
+	      || (in_list->attr.s == NULL) != (out_list->attr.s == NULL)
+	      || (in_list->attr.s && out_list->attr.s
+		  && strcmp (in_list->attr.s, out_list->attr.s) != 0))
+	    {
+	      /* No match.  Delete the attribute.  */
+	      *out_listp = out_list->next;
+	      out_list = *out_listp;
+	    }
+	  else
+	    {
+	      /* Matched.  Keep the attribute and move to the next.  */
+	      out_list = out_list->next;
+	      in_list = in_list->next;
+	    }
+	}
+
+      if (err_bfd)
+	result = result
+	  && get_elf_backend_data (err_bfd)->obj_attrs_handle_unknown (err_bfd,
+								       err_tag);
+    }
+
+  return result;
+}