(_bfd_elf_write_section_eh_frame): Do proper

extension when calculating difference of offsets.

bfd/ChangeLog

@@ -1,3 +1,8 @@
+2008-08-24  Andreas Schwab  <schwab@suse.de>
+
+	* elf-eh-frame.c (_bfd_elf_write_section_eh_frame): Do proper
+	extension when calculating difference of offsets.
+
 2008-08-24  Alan Modra  <amodra@bigpond.net.au>
 
 	* configure.in: Update a number of obsolete autoconf macros.

bfd/elf-eh-frame.c

@@ -1445,7 +1445,7 @@ _bfd_elf_write_section_eh_frame (bfd *abfd,
 
 			val = read_value (abfd, buf, per_width,
 					  get_DW_EH_PE_signed (per_encoding));
-			val += ent->offset - ent->new_offset;
+			val += (bfd_vma) ent->offset - ent->new_offset;
 			val -= extra_string + extra_data;
 			write_value (abfd, buf, val, per_width);
 			action &= ~4;
@@ -1504,7 +1504,7 @@ _bfd_elf_write_section_eh_frame (bfd *abfd,
 		  }
 		  break;
 		case DW_EH_PE_pcrel:
-		  value += ent->offset - ent->new_offset;
+		  value += (bfd_vma) ent->offset - ent->new_offset;
 		  address += (sec->output_section->vma
 			      + sec->output_offset
 			      + ent->offset + 8);
@@ -1538,7 +1538,7 @@ _bfd_elf_write_section_eh_frame (bfd *abfd,
 	      if (value)
 		{
 		  if ((ent->lsda_encoding & 0xf0) == DW_EH_PE_pcrel)
-		    value += ent->offset - ent->new_offset;
+		    value += (bfd_vma) ent->offset - ent->new_offset;
 		  else if (cie->u.cie.make_lsda_relative)
 		    value -= (sec->output_section->vma
 			      + sec->output_offset
@@ -1577,7 +1577,7 @@ _bfd_elf_write_section_eh_frame (bfd *abfd,
 		    continue;
 
 		  if ((ent->fde_encoding & 0xf0) == DW_EH_PE_pcrel)
-		    value += ent->offset + 8 - new_offset;
+		    value += (bfd_vma) ent->offset + 8 - new_offset;
 		  if (ent->make_relative)
 		    value -= (sec->output_section->vma
 			      + sec->output_offset