.eh_frame references to discarded sections

[Richard Henderson]

What's the current wisdom on handling these?

At present I'm getting relocation overflow errors of
32-bit relative relocs to SHN_UNDEF.  The following
produces correct results, but may not be what we're
currently looking for.


r~



Index: elf64-alpha.c
===================================================================
RCS file: /cvs/src/src/bfd/elf64-alpha.c,v
retrieving revision 1.61
diff -c -p -d -r1.61 elf64-alpha.c
*** elf64-alpha.c	4 Apr 2002 19:53:37 -0000	1.61
--- elf64-alpha.c	30 Apr 2002 21:09:51 -0000
*************** elf64_alpha_relocate_section (output_bfd
*** 3695,3700 ****
--- 3695,3710 ----
  	  }
  	  goto default_reloc;
  
+ 	case R_ALPHA_SREL32:
+ 	case R_ALPHA_SREL64:
+ 	  /* ??? .eh_frame references to discarded sections will be smashed
+ 	     to relocations against SHN_UNDEF.  The .eh_frame format allows
+ 	     NULL to be encoded as 0 in any format, so this works here.  */
+ 	  if (r_symndx == 0)
+ 	    howto = (elf64_alpha_howto_table
+ 		     + (r_type - R_ALPHA_SREL32 + R_ALPHA_REFLONG));
+ 	  goto default_reloc;
+ 
  	default:
  	default_reloc:
  	  r = _bfd_final_link_relocate (howto, input_bfd, input_section,