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revision 20 by monamour, Thu Dec 4 05:12:56 2008 UTC revision 21 by monamour, Mon Jul 27 20:34:36 2009 UTC
# Line 1  Line 1 
1  /* BFD back-end for IBM RS/6000 "XCOFF64" files.  /* BFD back-end for IBM RS/6000 "XCOFF64" files.
2     Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008     Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
3     Free Software Foundation, Inc.     Free Software Foundation, Inc.
4     Written Clinton Popetz.     Written Clinton Popetz.
5     Contributed by Cygnus Support.     Contributed by Cygnus Support.
# Line 381  _bfd_xcoff64_swap_aux_in (abfd, ext1, ty Line 381  _bfd_xcoff64_swap_aux_in (abfd, ext1, ty
381    
382        /* RS/6000 "csect" auxents */        /* RS/6000 "csect" auxents */
383      case C_EXT:      case C_EXT:
384        case C_AIX_WEAKEXT:
385      case C_HIDEXT:      case C_HIDEXT:
386        if (indx + 1 == numaux)        if (indx + 1 == numaux)
387          {          {
# Line 473  _bfd_xcoff64_swap_aux_out (abfd, inp, ty Line 474  _bfd_xcoff64_swap_aux_out (abfd, inp, ty
474    
475        /* RS/6000 "csect" auxents */        /* RS/6000 "csect" auxents */
476      case C_EXT:      case C_EXT:
477        case C_AIX_WEAKEXT:
478      case C_HIDEXT:      case C_HIDEXT:
479        if (indx + 1 == numaux)        if (indx + 1 == numaux)
480          {          {
# Line 767  xcoff64_write_object_contents (abfd) Line 769  xcoff64_write_object_contents (abfd)
769    file_ptr sym_base;    file_ptr sym_base;
770    unsigned long reloc_size = 0;    unsigned long reloc_size = 0;
771    unsigned long lnno_size = 0;    unsigned long lnno_size = 0;
   bfd_boolean long_section_names;  
772    asection *text_sec = ((void *) 0);    asection *text_sec = ((void *) 0);
773    asection *data_sec = ((void *) 0);    asection *data_sec = ((void *) 0);
774    asection *bss_sec = ((void *) 0);    asection *bss_sec = ((void *) 0);
# Line 837  xcoff64_write_object_contents (abfd) Line 838  xcoff64_write_object_contents (abfd)
838    if (bfd_seek (abfd, scn_base, SEEK_SET) != 0)    if (bfd_seek (abfd, scn_base, SEEK_SET) != 0)
839      return FALSE;      return FALSE;
840    
   long_section_names = FALSE;  
841    for (current = abfd->sections; current != NULL; current = current->next)    for (current = abfd->sections; current != NULL; current = current->next)
842      {      {
843        struct internal_scnhdr section;        struct internal_scnhdr section;
# Line 1050  xcoff64_write_object_contents (abfd) Line 1050  xcoff64_write_object_contents (abfd)
1050              case bfd_arch_powerpc:              case bfd_arch_powerpc:
1051                if (bfd_get_mach (abfd) == bfd_mach_ppc)                if (bfd_get_mach (abfd) == bfd_mach_ppc)
1052                  internal_a.o_cputype = 3;                  internal_a.o_cputype = 3;
1053                  else if (bfd_get_mach (abfd) == bfd_mach_ppc_620)
1054                    internal_a.o_cputype = 2;
1055                else                else
1056                  internal_a.o_cputype = 1;                  internal_a.o_cputype = 1;
1057                break;                break;
# Line 1117  xcoff64_reloc_type_br (input_bfd, input_ Line 1119  xcoff64_reloc_type_br (input_bfd, input_
1119       bfd_byte *contents;       bfd_byte *contents;
1120  {  {
1121    struct xcoff_link_hash_entry *h;    struct xcoff_link_hash_entry *h;
1122      bfd_vma section_offset;
1123    
1124    if (0 > rel->r_symndx)    if (0 > rel->r_symndx)
1125      return FALSE;      return FALSE;
1126    
1127    h = obj_xcoff_sym_hashes (input_bfd)[rel->r_symndx];    h = obj_xcoff_sym_hashes (input_bfd)[rel->r_symndx];
1128      section_offset = rel->r_vaddr - input_section->vma;
1129    
1130    /* If we see an R_BR or R_RBR reloc which is jumping to global    /* If we see an R_BR or R_RBR reloc which is jumping to global
1131       linkage code, and it is followed by an appropriate cror nop       linkage code, and it is followed by an appropriate cror nop
# Line 1131  xcoff64_reloc_type_br (input_bfd, input_ Line 1135  xcoff64_reloc_type_br (input_bfd, input_
1135       going to global linkage code, we can replace the load with a       going to global linkage code, we can replace the load with a
1136       cror.  */       cror.  */
1137    if (NULL != h    if (NULL != h
1138        && bfd_link_hash_defined == h->root.type        && (bfd_link_hash_defined == h->root.type
1139        && rel->r_vaddr - input_section->vma + 8 <= input_section->size)            || bfd_link_hash_defweak == h->root.type)
1140          && section_offset + 8 <= input_section->size)
1141      {      {
1142        bfd_byte *pnext;        bfd_byte *pnext;
1143        unsigned long next;        unsigned long next;
1144    
1145        pnext = contents + (rel->r_vaddr - input_section->vma) + 4;        pnext = contents + section_offset + 4;
1146        next = bfd_get_32 (input_bfd, pnext);        next = bfd_get_32 (input_bfd, pnext);
1147    
1148        /* The _ptrgl function is magic.  It is used by the AIX compiler to call        /* The _ptrgl function is magic.  It is used by the AIX compiler to call
# Line 1166  xcoff64_reloc_type_br (input_bfd, input_ Line 1171  xcoff64_reloc_type_br (input_bfd, input_
1171        howto->complain_on_overflow = complain_overflow_dont;        howto->complain_on_overflow = complain_overflow_dont;
1172      }      }
1173    
1174    howto->pc_relative = TRUE;    /* The original PC-relative relocation is biased by -r_vaddr, so adding
1175         the value below will give the absolute target address.  */
1176      *relocation = val + addend + rel->r_vaddr;
1177    
1178    howto->src_mask &= ~3;    howto->src_mask &= ~3;
1179    howto->dst_mask = howto->src_mask;    howto->dst_mask = howto->src_mask;
1180    
1181    /* A PC relative reloc includes the section address.  */    if (h != NULL
1182    addend += input_section->vma;        && (h->root.type == bfd_link_hash_defined
1183              || h->root.type == bfd_link_hash_defweak)
1184    *relocation = val + addend;        && bfd_is_abs_section (h->root.u.def.section)
1185    *relocation -= (input_section->output_section->vma        && section_offset + 4 <= input_section->size)
1186                    + input_section->output_offset);      {
1187          bfd_byte *ptr;
1188          bfd_vma insn;
1189    
1190          /* Turn the relative branch into an absolute one by setting the
1191             AA bit.  */
1192          ptr = contents + section_offset;
1193          insn = bfd_get_32 (input_bfd, ptr);
1194          insn |= 2;
1195          bfd_put_32 (input_bfd, insn, ptr);
1196    
1197          /* Make the howto absolute too.  */
1198          howto->pc_relative = FALSE;
1199          howto->complain_on_overflow = complain_overflow_bitfield;
1200        }
1201      else
1202        {
1203          /* Use a PC-relative howto and subtract the instruction's address
1204             from the target address we calculated above.  */
1205          howto->pc_relative = TRUE;
1206          *relocation -= (input_section->output_section->vma
1207                          + input_section->output_offset
1208                          + section_offset);
1209        }
1210    return TRUE;    return TRUE;
1211  }  }
1212    
# Line 1266  xcoff64_ppc_relocate_section (output_bfd Line 1297  xcoff64_ppc_relocate_section (output_bfd
1297              }              }
1298            else            else
1299              {              {
1300                  if (info->unresolved_syms_in_objects != RM_IGNORE
1301                      && (h->flags & XCOFF_WAS_UNDEFINED) != 0)
1302                    {
1303                      if (! ((*info->callbacks->undefined_symbol)
1304                             (info, h->root.root.string,
1305                              input_bfd, input_section,
1306                              rel->r_vaddr - input_section->vma,
1307                              (info->unresolved_syms_in_objects
1308                               == RM_GENERATE_ERROR))))
1309                        return FALSE;
1310                    }
1311                if (h->root.type == bfd_link_hash_defined                if (h->root.type == bfd_link_hash_defined
1312                    || h->root.type == bfd_link_hash_defweak)                    || h->root.type == bfd_link_hash_defweak)
1313                  {                  {
# Line 1280  xcoff64_ppc_relocate_section (output_bfd Line 1322  xcoff64_ppc_relocate_section (output_bfd
1322                    val = (sec->output_section->vma                    val = (sec->output_section->vma
1323                           + sec->output_offset);                           + sec->output_offset);
1324                  }                  }
1325                else if ((0 == (h->flags & (XCOFF_DEF_DYNAMIC | XCOFF_IMPORT)))                else
                        && ! info->relocatable)  
1326                  {                  {
1327                    if (! ((*info->callbacks->undefined_symbol)                    BFD_ASSERT (info->relocatable
1328                           (info, h->root.root.string, input_bfd, input_section,                                || (h->flags & XCOFF_DEF_DYNAMIC) != 0
1329                            rel->r_vaddr - input_section->vma, TRUE)))                                || (h->flags & XCOFF_IMPORT) != 0);
                     return FALSE;  
   
                   /* Don't try to process the reloc.  It can't help, and  
                      it may generate another error.  */  
                   continue;  
1330                  }                  }
1331              }              }
1332          }          }
# Line 2561  static const struct xcoff_backend_data_r Line 2597  static const struct xcoff_backend_data_r
2597        LINESZ,        LINESZ,
2598        FILNMLEN,        FILNMLEN,
2599        TRUE,                     /* _bfd_coff_long_filenames */        TRUE,                     /* _bfd_coff_long_filenames */
2600        FALSE,                    /* _bfd_coff_long_section_names */        XCOFF_NO_LONG_SECTION_NAMES,  /* _bfd_coff_long_section_names */
2601        3,                        /* _bfd_coff_default_section_alignment_power */        3,                        /* _bfd_coff_default_section_alignment_power */
2602        TRUE,                     /* _bfd_coff_force_symnames_in_strings */        TRUE,                     /* _bfd_coff_force_symnames_in_strings */
2603        4,                        /* _bfd_coff_debug_string_prefix_length */        4,                        /* _bfd_coff_debug_string_prefix_length */
# Line 2769  const bfd_target rs6000coff64_vec = Line 2805  const bfd_target rs6000coff64_vec =
2805      bfd_generic_is_group_section,      bfd_generic_is_group_section,
2806      bfd_generic_discard_group,      bfd_generic_discard_group,
2807      _bfd_generic_section_already_linked,      _bfd_generic_section_already_linked,
2808        _bfd_xcoff_define_common_symbol,
2809    
2810      /* Dynamic */      /* Dynamic */
2811      _bfd_xcoff_get_dynamic_symtab_upper_bound,      _bfd_xcoff_get_dynamic_symtab_upper_bound,
# Line 2815  static const struct xcoff_backend_data_r Line 2852  static const struct xcoff_backend_data_r
2852        LINESZ,        LINESZ,
2853        FILNMLEN,        FILNMLEN,
2854        TRUE,                     /* _bfd_coff_long_filenames */        TRUE,                     /* _bfd_coff_long_filenames */
2855        FALSE,                    /* _bfd_coff_long_section_names */        XCOFF_NO_LONG_SECTION_NAMES,  /* _bfd_coff_long_section_names */
2856        3,                        /* _bfd_coff_default_section_alignment_power */        3,                        /* _bfd_coff_default_section_alignment_power */
2857        TRUE,                     /* _bfd_coff_force_symnames_in_strings */        TRUE,                     /* _bfd_coff_force_symnames_in_strings */
2858        4,                        /* _bfd_coff_debug_string_prefix_length */        4,                        /* _bfd_coff_debug_string_prefix_length */
# Line 3022  const bfd_target aix5coff64_vec = Line 3059  const bfd_target aix5coff64_vec =
3059      bfd_generic_is_group_section,      bfd_generic_is_group_section,
3060      bfd_generic_discard_group,      bfd_generic_discard_group,
3061      _bfd_generic_section_already_linked,      _bfd_generic_section_already_linked,
3062        _bfd_xcoff_define_common_symbol,
3063    
3064      /* Dynamic */      /* Dynamic */
3065      _bfd_xcoff_get_dynamic_symtab_upper_bound,      _bfd_xcoff_get_dynamic_symtab_upper_bound,
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