[ECOS] About [ECOS] ecosSWtools problems

Catherine Moore clm@cygnus.com
Wed Aug 11 07:19:00 GMT 1999


Here is a patch to fix a problem that Robin reported with
the --gc-sections linker option causing referenced code to be
discarded for the Arm tool chain.

1999-07-30  Catherine Moore <clm@cygnus.com>
 
        * gas/config/tc-arm.c (tc_gen_reloc): Record the vtable entry in
        the relocation's section offset.

        * bfd/elf32-arm.h (elf32_arm_check_relocs):  Use r_offset for
        R_ARM_GNU_VTENTRY.
 

Index: gas/config/tc-arm.c
===================================================================
RCS file: /cvs/cvsfiles/devo/gas/config/tc-arm.c,v
retrieving revision 1.66.2.3
diff -c -2 -p -r1.66.2.3 tc-arm.c
*** tc-arm.c	1999/07/16 20:31:06	1.66.2.3
--- tc-arm.c	1999/07/30 17:14:36
*************** tc_gen_reloc (section, fixp)
*** 5746,5749 ****
--- 5746,5754 ----
      }
  
+    /* HACK: Since arm ELF uses Rel instead of Rela, encode the
+       vtable entry to be used in the relocation's section offset.  */
+    if (fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
+      reloc->address = fixp->fx_offset;
+ 
    return reloc;
  }
Index: bfd/elf32-arm.h
===================================================================
RCS file: /cvs/cvsfiles/devo/bfd/elf32-arm.h,v
retrieving revision 1.2.4.2
diff -c -2 -p -r1.2.4.2 elf32-arm.h
*** elf32-arm.h	1999/07/16 20:22:55	1.2.4.2
--- elf32-arm.h	1999/07/30 17:14:43
*************** elf32_arm_check_relocs (abfd, info, sec,
*** 1727,1731 ****
             used.  Record for later use during GC.  */
          case R_ARM_GNU_VTENTRY:
!           if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
              return false;
            break;
--- 1727,1731 ----
             used.  Record for later use during GC.  */
          case R_ARM_GNU_VTENTRY:
!           if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset))
              return false;
            break;



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