bfd/elf32-cris.c

   1 /* CRIS-specific support for 32-bit ELF.
   2    Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
   3    Free Software Foundation, Inc.
   4    Contributed by Axis Communications AB.
   5    Written by Hans-Peter Nilsson, based on elf32-fr30.c
   6    PIC and shlib bits based primarily on elf32-m68k.c and elf32-i386.c.
   7
   8    This file is part of BFD, the Binary File Descriptor library.
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  23
  24 #include "bfd.h"
  25 #include "sysdep.h"
  26 #include "libbfd.h"
  27 #include "elf-bfd.h"
  28 #include "elf/cris.h"
  29
  30 /* Forward declarations.  */
  31 static reloc_howto_type * cris_reloc_type_lookup
  32   PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
  33
  34 static void cris_info_to_howto_rela
  35   PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
  36
  37 static bfd_reloc_status_type cris_elf_pcrel_reloc
  38   PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
  39
  40 static bfd_boolean cris_elf_grok_prstatus
  41   PARAMS ((bfd *abfd, Elf_Internal_Note *note));
  42
  43 static bfd_boolean cris_elf_grok_psinfo
  44   PARAMS ((bfd *abfd, Elf_Internal_Note *note));
  45
  46 static bfd_boolean cris_elf_relocate_section
  47   PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
  48            Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
  49
  50 static bfd_reloc_status_type cris_final_link_relocate
  51   PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
  52            Elf_Internal_Rela *, bfd_vma));
  53
  54 static bfd_boolean cris_elf_object_p PARAMS ((bfd *));
  55
  56 static void cris_elf_final_write_processing PARAMS ((bfd *, bfd_boolean));
  57
  58 static bfd_boolean cris_elf_set_mach_from_flags
  59   PARAMS ((bfd *, unsigned long int));
  60
  61 static bfd_boolean cris_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
  62
  63 static bfd_boolean cris_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
  64 static bfd_boolean cris_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *));
  65
  66 struct elf_cris_link_hash_entry;
  67 static bfd_boolean elf_cris_discard_excess_dso_dynamics
  68   PARAMS ((struct elf_cris_link_hash_entry *, PTR));
  69 static bfd_boolean elf_cris_discard_excess_program_dynamics
  70   PARAMS ((struct elf_cris_link_hash_entry *, PTR));
  71 static bfd_boolean elf_cris_adjust_gotplt_to_got
  72   PARAMS ((struct elf_cris_link_hash_entry *, PTR));
  73 static bfd_boolean elf_cris_try_fold_plt_to_got
  74   PARAMS ((struct elf_cris_link_hash_entry *, PTR));
  75 static struct bfd_hash_entry *elf_cris_link_hash_newfunc
  76   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
  77 static struct bfd_link_hash_table *elf_cris_link_hash_table_create
  78   PARAMS ((bfd *));
  79 static bfd_boolean elf_cris_adjust_dynamic_symbol
  80   PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
  81 static bfd_boolean cris_elf_check_relocs
  82   PARAMS ((bfd *, struct bfd_link_info *, asection *,
  83            const Elf_Internal_Rela *));
  84
  85 static bfd_boolean elf_cris_size_dynamic_sections
  86   PARAMS ((bfd *, struct bfd_link_info *));
  87 static bfd_boolean elf_cris_finish_dynamic_symbol
  88   PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
  89            Elf_Internal_Sym *));
  90 static bfd_boolean elf_cris_finish_dynamic_sections
  91   PARAMS ((bfd *, struct bfd_link_info *));
  92 static void elf_cris_hide_symbol
  93   PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
  94 static enum elf_reloc_type_class elf_cris_reloc_type_class
  95   PARAMS ((const Elf_Internal_Rela *));
  96
  97 static reloc_howto_type cris_elf_howto_table [] =
  98 {
  99   /* This reloc does nothing.  */
 100   HOWTO (R_CRIS_NONE,           /* type */
 101          0,                     /* rightshift */
 102          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 103          32,                    /* bitsize */
 104          FALSE,                 /* pc_relative */
 105          0,                     /* bitpos */
 106          complain_overflow_bitfield, /* complain_on_overflow */
 107          bfd_elf_generic_reloc, /* special_function */
 108          "R_CRIS_NONE",         /* name */
 109          FALSE,                 /* partial_inplace */
 110          0,                     /* src_mask */
 111          0,                     /* dst_mask */
 112          FALSE),                /* pcrel_offset */
 113
 114   /* An 8 bit absolute relocation.  */
 115   HOWTO (R_CRIS_8,              /* type */
 116          0,                     /* rightshift */
 117          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 118          8,                     /* bitsize */
 119          FALSE,                 /* pc_relative */
 120          0,                     /* bitpos */
 121          complain_overflow_bitfield, /* complain_on_overflow */
 122          bfd_elf_generic_reloc, /* special_function */
 123          "R_CRIS_8",            /* name */
 124          FALSE,                 /* partial_inplace */
 125          0x0000,                /* src_mask */
 126          0x00ff,                /* dst_mask */
 127          FALSE),                /* pcrel_offset */
 128
 129   /* A 16 bit absolute relocation.  */
 130   HOWTO (R_CRIS_16,             /* type */
 131          0,                     /* rightshift */
 132          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 133          16,                    /* bitsize */
 134          FALSE,                 /* pc_relative */
 135          0,                     /* bitpos */
 136          complain_overflow_bitfield, /* complain_on_overflow */
 137          bfd_elf_generic_reloc, /* special_function */
 138          "R_CRIS_16",           /* name */
 139          FALSE,                 /* partial_inplace */
 140          0x00000000,            /* src_mask */
 141          0x0000ffff,            /* dst_mask */
 142          FALSE),                /* pcrel_offset */
 143
 144   /* A 32 bit absolute relocation.  */
 145   HOWTO (R_CRIS_32,             /* type */
 146          0,                     /* rightshift */
 147          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 148          32,                    /* bitsize */
 149          FALSE,                 /* pc_relative */
 150          0,                     /* bitpos */
 151          /* We don't want overflow complaints for 64-bit vma builds
 152             for e.g. sym+0x40000000 (or actually sym-0xc0000000 in
 153             32-bit ELF) where sym=0xc0001234.
 154             Don't do this for the PIC relocs, as we don't expect to
 155             see them with large offsets.  */
 156          complain_overflow_dont, /* complain_on_overflow */
 157          bfd_elf_generic_reloc, /* special_function */
 158          "R_CRIS_32",           /* name */
 159          FALSE,                 /* partial_inplace */
 160          0x00000000,            /* src_mask */
 161          0xffffffff,            /* dst_mask */
 162          FALSE),                /* pcrel_offset */
 163
 164   /* An 8 bit PC-relative relocation.  */
 165   HOWTO (R_CRIS_8_PCREL,        /* type */
 166          0,                     /* rightshift */
 167          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 168          8,                     /* bitsize */
 169          TRUE,                  /* pc_relative */
 170          0,                     /* bitpos */
 171          complain_overflow_bitfield, /* complain_on_overflow */
 172          cris_elf_pcrel_reloc,  /* special_function */
 173          "R_CRIS_8_PCREL",      /* name */
 174          FALSE,                 /* partial_inplace */
 175          0x0000,                /* src_mask */
 176          0x00ff,                /* dst_mask */
 177          TRUE),                 /* pcrel_offset */
 178
 179   /* A 16 bit PC-relative relocation.  */
 180   HOWTO (R_CRIS_16_PCREL,       /* type */
 181          0,                     /* rightshift */
 182          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 183          16,                    /* bitsize */
 184          TRUE,                  /* pc_relative */
 185          0,                     /* bitpos */
 186          complain_overflow_bitfield, /* complain_on_overflow */
 187          cris_elf_pcrel_reloc,  /* special_function */
 188          "R_CRIS_16_PCREL",     /* name */
 189          FALSE,                 /* partial_inplace */
 190          0x00000000,            /* src_mask */
 191          0x0000ffff,            /* dst_mask */
 192          TRUE),                 /* pcrel_offset */
 193
 194   /* A 32 bit PC-relative relocation.  */
 195   HOWTO (R_CRIS_32_PCREL,       /* type */
 196          0,                     /* rightshift */
 197          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 198          32,                    /* bitsize */
 199          TRUE,                  /* pc_relative */
 200          0,                     /* bitpos */
 201          complain_overflow_bitfield, /* complain_on_overflow */
 202          cris_elf_pcrel_reloc,  /* special_function */
 203          "R_CRIS_32_PCREL",     /* name */
 204          FALSE,                 /* partial_inplace */
 205          0x00000000,            /* src_mask */
 206          0xffffffff,            /* dst_mask */
 207          TRUE),                 /* pcrel_offset */
 208
 209   /* GNU extension to record C++ vtable hierarchy.  */
 210   HOWTO (R_CRIS_GNU_VTINHERIT,  /* type */
 211          0,                     /* rightshift */
 212          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 213          0,                     /* bitsize */
 214          FALSE,                 /* pc_relative */
 215          0,                     /* bitpos */
 216          complain_overflow_dont, /* complain_on_overflow */
 217          NULL,                  /* special_function */
 218          "R_CRIS_GNU_VTINHERIT", /* name */
 219          FALSE,                 /* partial_inplace */
 220          0,                     /* src_mask */
 221          0,                     /* dst_mask */
 222          FALSE),                /* pcrel_offset */
 223
 224   /* GNU extension to record C++ vtable member usage.  */
 225   HOWTO (R_CRIS_GNU_VTENTRY,    /* type */
 226          0,                     /* rightshift */
 227          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 228          0,                     /* bitsize */
 229          FALSE,                 /* pc_relative */
 230          0,                     /* bitpos */
 231          complain_overflow_dont, /* complain_on_overflow */
 232          _bfd_elf_rel_vtable_reloc_fn,  /* special_function */
 233          "R_CRIS_GNU_VTENTRY",   /* name */
 234          FALSE,                 /* partial_inplace */
 235          0,                     /* src_mask */
 236          0,                     /* dst_mask */
 237          FALSE),                /* pcrel_offset */
 238
 239   /* This is used only by the dynamic linker.  The symbol should exist
 240      both in the object being run and in some shared library.  The
 241      dynamic linker copies the data addressed by the symbol from the
 242      shared library into the object, because the object being
 243      run has to have the data at some particular address.  */
 244   HOWTO (R_CRIS_COPY,           /* type */
 245          0,                     /* rightshift */
 246          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 247          32,                    /* bitsize */
 248          FALSE,                 /* pc_relative */
 249          0,                     /* bitpos */
 250          complain_overflow_bitfield, /* complain_on_overflow */
 251          bfd_elf_generic_reloc, /* special_function */
 252          "R_CRIS_COPY",         /* name */
 253          FALSE,                 /* partial_inplace */
 254          0,                     /* src_mask */
 255          0,                     /* dst_mask */
 256          FALSE),                /* pcrel_offset */
 257
 258   /* Like R_CRIS_32, but used when setting global offset table entries.  */
 259   HOWTO (R_CRIS_GLOB_DAT,       /* type */
 260          0,                     /* rightshift */
 261          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 262          32,                    /* bitsize */
 263          FALSE,                 /* pc_relative */
 264          0,                     /* bitpos */
 265          complain_overflow_bitfield, /* complain_on_overflow */
 266          bfd_elf_generic_reloc, /* special_function */
 267          "R_CRIS_GLOB_DAT",     /* name */
 268          FALSE,                 /* partial_inplace */
 269          0,                     /* src_mask */
 270          0xffffffff,            /* dst_mask */
 271          FALSE),                /* pcrel_offset */
 272
 273   /* Marks a procedure linkage table entry for a symbol.  */
 274   HOWTO (R_CRIS_JUMP_SLOT,      /* type */
 275          0,                     /* rightshift */
 276          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 277          32,                    /* bitsize */
 278          FALSE,                 /* pc_relative */
 279          0,                     /* bitpos */
 280          complain_overflow_bitfield, /* complain_on_overflow */
 281          bfd_elf_generic_reloc, /* special_function */
 282          "R_CRIS_JUMP_SLOT",    /* name */
 283          FALSE,                 /* partial_inplace */
 284          0,                     /* src_mask */
 285          0,                     /* dst_mask */
 286          FALSE),                /* pcrel_offset */
 287
 288   /* Used only by the dynamic linker.  When the object is run, this
 289      longword is set to the load address of the object, plus the
 290      addend.  */
 291   HOWTO (R_CRIS_RELATIVE,       /* type */
 292          0,                     /* rightshift */
 293          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 294          32,                    /* bitsize */
 295          FALSE,                 /* pc_relative */
 296          0,                     /* bitpos */
 297          complain_overflow_bitfield, /* complain_on_overflow */
 298          bfd_elf_generic_reloc, /* special_function */
 299          "R_CRIS_RELATIVE",     /* name */
 300          FALSE,                 /* partial_inplace */
 301          0,                     /* src_mask */
 302          0xffffffff,            /* dst_mask */
 303          FALSE),                /* pcrel_offset */
 304
 305   /* Like R_CRIS_32, but referring to the GOT table entry for the symbol.  */
 306   HOWTO (R_CRIS_16_GOT,         /* type */
 307          0,                     /* rightshift */
 308          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 309          16,                    /* bitsize */
 310          FALSE,                 /* pc_relative */
 311          0,                     /* bitpos */
 312          complain_overflow_bitfield, /* complain_on_overflow */
 313          bfd_elf_generic_reloc, /* special_function */
 314          "R_CRIS_16_GOT",       /* name */
 315          FALSE,                 /* partial_inplace */
 316          0,                     /* src_mask */
 317          0xffff,                /* dst_mask */
 318          FALSE),                /* pcrel_offset */
 319
 320   HOWTO (R_CRIS_32_GOT,         /* type */
 321          0,                     /* rightshift */
 322          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 323          32,                    /* bitsize */
 324          FALSE,                 /* pc_relative */
 325          0,                     /* bitpos */
 326          complain_overflow_bitfield, /* complain_on_overflow */
 327          bfd_elf_generic_reloc, /* special_function */
 328          "R_CRIS_32_GOT",       /* name */
 329          FALSE,                 /* partial_inplace */
 330          0,                     /* src_mask */
 331          0xffffffff,            /* dst_mask */
 332          FALSE),                /* pcrel_offset */
 333
 334   /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of
 335      the GOT table for the symbol.  */
 336   HOWTO (R_CRIS_16_GOTPLT,      /* type */
 337          0,                     /* rightshift */
 338          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 339          16,                    /* bitsize */
 340          FALSE,                 /* pc_relative */
 341          0,                     /* bitpos */
 342          complain_overflow_bitfield, /* complain_on_overflow */
 343          bfd_elf_generic_reloc, /* special_function */
 344          "R_CRIS_16_GOTPLT",    /* name */
 345          FALSE,                 /* partial_inplace */
 346          0,                     /* src_mask */
 347          0xffff,                /* dst_mask */
 348          FALSE),                /* pcrel_offset */
 349
 350   HOWTO (R_CRIS_32_GOTPLT,      /* type */
 351          0,                     /* rightshift */
 352          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 353          32,                    /* bitsize */
 354          FALSE,                 /* pc_relative */
 355          0,                     /* bitpos */
 356          complain_overflow_bitfield, /* complain_on_overflow */
 357          bfd_elf_generic_reloc, /* special_function */
 358          "R_CRIS_32_GOTPLT",    /* name */
 359          FALSE,                 /* partial_inplace */
 360          0,                     /* src_mask */
 361          0xffffffff,            /* dst_mask */
 362          FALSE),                /* pcrel_offset */
 363
 364   /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should
 365      be necessary.  */
 366   HOWTO (R_CRIS_32_GOTREL,      /* type */
 367          0,                     /* rightshift */
 368          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 369          32,                    /* bitsize */
 370          FALSE,                 /* pc_relative */
 371          0,                     /* bitpos */
 372          complain_overflow_bitfield, /* complain_on_overflow */
 373          bfd_elf_generic_reloc, /* special_function */
 374          "R_CRIS_32_GOTREL",    /* name */
 375          FALSE,                 /* partial_inplace */
 376          0,                     /* src_mask */
 377          0xffffffff,            /* dst_mask */
 378          FALSE),                /* pcrel_offset */
 379
 380   /* A 32-bit offset from GOT to entry for this symbol in PLT and request
 381      to create PLT entry for symbol.  */
 382   HOWTO (R_CRIS_32_PLT_GOTREL,  /* type */
 383          0,                     /* rightshift */
 384          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 385          32,                    /* bitsize */
 386          FALSE,                 /* pc_relative */
 387          0,                     /* bitpos */
 388          complain_overflow_bitfield, /* complain_on_overflow */
 389          bfd_elf_generic_reloc, /* special_function */
 390          "R_CRIS_32_PLT_GOTREL", /* name */
 391          FALSE,                 /* partial_inplace */
 392          0,                     /* src_mask */
 393          0xffffffff,            /* dst_mask */
 394          FALSE),                /* pcrel_offset */
 395
 396   /* A 32-bit offset from PC (location after the relocation) + addend to
 397      entry for this symbol in PLT and request to create PLT entry for
 398      symbol.  */
 399   HOWTO (R_CRIS_32_PLT_PCREL,   /* type */
 400          0,                     /* rightshift */
 401          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 402          32,                    /* bitsize */
 403          TRUE,                  /* pc_relative */
 404          0,                     /* bitpos */
 405          complain_overflow_bitfield, /* complain_on_overflow */
 406          cris_elf_pcrel_reloc,  /* special_function */
 407          "R_CRIS_32_PLT_PCREL", /* name */
 408          FALSE,                 /* partial_inplace */
 409          0,                     /* src_mask */
 410          0xffffffff,            /* dst_mask */
 411          TRUE)                  /* pcrel_offset */
 412 };
 413 \f
 414 /* Map BFD reloc types to CRIS ELF reloc types.  */
 415
 416 struct cris_reloc_map
 417 {
 418   bfd_reloc_code_real_type bfd_reloc_val;
 419   unsigned int cris_reloc_val;
 420 };
 421
 422 static const struct cris_reloc_map cris_reloc_map [] =
 423 {
 424   { BFD_RELOC_NONE,             R_CRIS_NONE },
 425   { BFD_RELOC_8,                R_CRIS_8 },
 426   { BFD_RELOC_16,               R_CRIS_16 },
 427   { BFD_RELOC_32,               R_CRIS_32 },
 428   { BFD_RELOC_8_PCREL,          R_CRIS_8_PCREL },
 429   { BFD_RELOC_16_PCREL,         R_CRIS_16_PCREL },
 430   { BFD_RELOC_32_PCREL,         R_CRIS_32_PCREL },
 431   { BFD_RELOC_VTABLE_INHERIT,   R_CRIS_GNU_VTINHERIT },
 432   { BFD_RELOC_VTABLE_ENTRY,     R_CRIS_GNU_VTENTRY },
 433   { BFD_RELOC_CRIS_COPY,        R_CRIS_COPY },
 434   { BFD_RELOC_CRIS_GLOB_DAT,    R_CRIS_GLOB_DAT },
 435   { BFD_RELOC_CRIS_JUMP_SLOT,   R_CRIS_JUMP_SLOT },
 436   { BFD_RELOC_CRIS_RELATIVE,    R_CRIS_RELATIVE },
 437   { BFD_RELOC_CRIS_16_GOT,      R_CRIS_16_GOT },
 438   { BFD_RELOC_CRIS_32_GOT,      R_CRIS_32_GOT },
 439   { BFD_RELOC_CRIS_16_GOTPLT,   R_CRIS_16_GOTPLT },
 440   { BFD_RELOC_CRIS_32_GOTPLT,   R_CRIS_32_GOTPLT },
 441   { BFD_RELOC_CRIS_32_GOTREL,   R_CRIS_32_GOTREL },
 442   { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL },
 443   { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL }
 444 };
 445
 446 static reloc_howto_type *
 447 cris_reloc_type_lookup (abfd, code)
 448      bfd * abfd ATTRIBUTE_UNUSED;
 449      bfd_reloc_code_real_type code;
 450 {
 451   unsigned int i;
 452
 453   for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++)
 454     if (cris_reloc_map [i].bfd_reloc_val == code)
 455       return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val];
 456
 457   return NULL;
 458 }
 459
 460 static reloc_howto_type *
 461 cris_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
 462 {
 463   unsigned int i;
 464
 465   for (i = 0;
 466        i < sizeof (cris_elf_howto_table) / sizeof (cris_elf_howto_table[0]);
 467        i++)
 468     if (cris_elf_howto_table[i].name != NULL
 469         && strcasecmp (cris_elf_howto_table[i].name, r_name) == 0)
 470       return &cris_elf_howto_table[i];
 471
 472   return NULL;
 473 }
 474
 475 /* Set the howto pointer for an CRIS ELF reloc.  */
 476
 477 static void
 478 cris_info_to_howto_rela (abfd, cache_ptr, dst)
 479      bfd * abfd ATTRIBUTE_UNUSED;
 480      arelent * cache_ptr;
 481      Elf_Internal_Rela * dst;
 482 {
 483   unsigned int r_type;
 484
 485   r_type = ELF32_R_TYPE (dst->r_info);
 486   BFD_ASSERT (r_type < (unsigned int) R_CRIS_max);
 487   cache_ptr->howto = & cris_elf_howto_table [r_type];
 488 }
 489
 490 bfd_reloc_status_type
 491 cris_elf_pcrel_reloc (abfd, reloc_entry, symbol, data, input_section,
 492                       output_bfd, error_message)
 493      bfd *abfd ATTRIBUTE_UNUSED;
 494      arelent *reloc_entry;
 495      asymbol *symbol;
 496      PTR data ATTRIBUTE_UNUSED;
 497      asection *input_section;
 498      bfd *output_bfd;
 499      char **error_message ATTRIBUTE_UNUSED;
 500 {
 501   /* By default (using only bfd_elf_generic_reloc when linking to
 502      non-ELF formats) PC-relative relocs are relative to the beginning
 503      of the reloc.  CRIS PC-relative relocs are relative to the position
 504      *after* the reloc because that's what pre-CRISv32 PC points to
 505      after reading an insn field with that reloc.  (For CRISv32, PC is
 506      actually relative to the start of the insn, but we keep the old
 507      definition.)  Still, we use as much generic machinery as we can.
 508
 509      Only adjust when doing a final link.  */
 510   if (output_bfd == (bfd *) NULL)
 511     reloc_entry->addend -= 1 << reloc_entry->howto->size;
 512
 513   return
 514     bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
 515                            input_section, output_bfd, error_message);
 516 }
 517 \f
 518 /* Support for core dump NOTE sections.
 519    The slightly unintuitive code layout is an attempt to keep at least
 520    some similarities with other ports, hoping to simplify general
 521    changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart.  */
 522
 523 static bfd_boolean
 524 cris_elf_grok_prstatus (abfd, note)
 525      bfd *abfd;
 526      Elf_Internal_Note *note;
 527 {
 528   int offset;
 529   size_t size;
 530
 531   if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
 532     switch (note->descsz)
 533       {
 534       default:
 535         return FALSE;
 536
 537       case 202:         /* Linux/CRISv32 */
 538         /* pr_cursig */
 539         elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
 540
 541         /* pr_pid */
 542         elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
 543
 544         /* pr_reg */
 545         offset = 70;
 546         size = 128;
 547
 548         break;
 549       }
 550   else
 551     switch (note->descsz)
 552       {
 553       default:
 554         return FALSE;
 555
 556       case 214:         /* Linux/CRIS */
 557         /* pr_cursig */
 558         elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
 559
 560         /* pr_pid */
 561         elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
 562
 563         /* pr_reg */
 564         offset = 70;
 565         size = 140;
 566
 567         break;
 568       }
 569
 570   /* Make a ".reg/999" section.  */
 571   return _bfd_elfcore_make_pseudosection (abfd, ".reg",
 572                                           size, note->descpos + offset);
 573 }
 574
 575 static bfd_boolean
 576 cris_elf_grok_psinfo (abfd, note)
 577      bfd *abfd;
 578      Elf_Internal_Note *note;
 579 {
 580   if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
 581     switch (note->descsz)
 582       {
 583       default:
 584         return FALSE;
 585
 586       case 124:         /* Linux/CRISv32 elf_prpsinfo */
 587         elf_tdata (abfd)->core_program
 588           = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
 589         elf_tdata (abfd)->core_command
 590           = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
 591       }
 592   else
 593     switch (note->descsz)
 594       {
 595       default:
 596         return FALSE;
 597
 598       case 124:         /* Linux/CRIS elf_prpsinfo */
 599         elf_tdata (abfd)->core_program
 600           = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
 601         elf_tdata (abfd)->core_command
 602           = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
 603       }
 604
 605   /* Note that for some reason, a spurious space is tacked
 606      onto the end of the args in some (at least one anyway)
 607      implementations, so strip it off if it exists.  */
 608
 609   {
 610     char *command = elf_tdata (abfd)->core_command;
 611     int n = strlen (command);
 612
 613     if (0 < n && command[n - 1] == ' ')
 614       command[n - 1] = '\0';
 615   }
 616
 617   return TRUE;
 618 }
 619 \f
 620 /* The name of the dynamic interpreter.  This is put in the .interp
 621    section.  */
 622
 623 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
 624
 625 /* The size in bytes of an entry in the procedure linkage table.  */
 626
 627 #define PLT_ENTRY_SIZE 20
 628 #define PLT_ENTRY_SIZE_V32 26
 629
 630 /* The first entry in an absolute procedure linkage table looks like this.  */
 631
 632 static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] =
 633 {
 634   0xfc, 0xe1,
 635   0x7e, 0x7e,   /* push mof.  */
 636   0x7f, 0x0d,   /*  (dip [pc+]) */
 637   0, 0, 0, 0,   /*  Replaced with address of .got + 4.  */
 638   0x30, 0x7a,   /* move [...],mof */
 639   0x7f, 0x0d,   /*  (dip [pc+]) */
 640   0, 0, 0, 0,   /*  Replaced with address of .got + 8.  */
 641   0x30, 0x09    /* jump [...] */
 642 };
 643
 644 static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
 645 {
 646   0x84, 0xe2,   /* subq 4,$sp */
 647   0x6f, 0xfe,   /* move.d 0,$acr */
 648   0, 0, 0, 0,   /*  Replaced by address of .got + 4.  */
 649   0x7e, 0x7a,   /* move $mof,[$sp] */
 650   0x3f, 0x7a,   /* move [$acr],$mof */
 651   0x04, 0xf2,   /* addq 4,acr */
 652   0x6f, 0xfa,   /* move.d [$acr],$acr */
 653   0xbf, 0x09,   /* jump $acr */
 654   0xb0, 0x05,   /* nop */
 655   0, 0          /*  Pad out to 26 bytes.  */
 656 };
 657
 658 /* Subsequent entries in an absolute procedure linkage table look like
 659    this.  */
 660
 661 static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] =
 662 {
 663   0x7f, 0x0d,   /*  (dip [pc+]) */
 664   0, 0, 0, 0,   /*  Replaced with address of this symbol in .got.  */
 665   0x30, 0x09,   /* jump [...] */
 666   0x3f,  0x7e,  /* move [pc+],mof */
 667   0, 0, 0, 0,   /*  Replaced with offset into relocation table.  */
 668   0x2f, 0xfe,   /* add.d [pc+],pc */
 669   0xec, 0xff,
 670   0xff, 0xff    /*  Replaced with offset to start of .plt.  */
 671 };
 672
 673 static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
 674 {
 675   0x6f, 0xfe,   /* move.d 0,$acr */
 676   0, 0, 0, 0,   /*  Replaced with address of this symbol in .got.  */
 677   0x6f, 0xfa,   /* move.d [$acr],$acr */
 678   0xbf, 0x09,   /* jump $acr */
 679   0xb0, 0x05,   /* nop */
 680   0x3f, 0x7e,   /* move 0,mof */
 681   0, 0, 0, 0,   /*  Replaced with offset into relocation table. */
 682   0xbf, 0x0e,   /* ba start_of_plt0_entry */
 683   0, 0, 0, 0,   /*  Replaced with offset to plt0 entry.  */
 684   0xb0, 0x05    /* nop */
 685 };
 686
 687 /* The first entry in a PIC procedure linkage table looks like this.  */
 688
 689 static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] =
 690 {
 691   0xfc, 0xe1, 0x7e, 0x7e,       /* push mof */
 692   0x04, 0x01, 0x30, 0x7a,       /* move [r0+4],mof */
 693   0x08, 0x01, 0x30, 0x09,       /* jump [r0+8] */
 694   0, 0, 0, 0, 0, 0, 0, 0,       /*  Pad out to 20 bytes.  */
 695 };
 696
 697 static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
 698 {
 699   0x84, 0xe2,   /* subq 4,$sp */
 700   0x04, 0x01,   /* addoq 4,$r0,$acr */
 701   0x7e, 0x7a,   /* move $mof,[$sp] */
 702   0x3f, 0x7a,   /* move [$acr],$mof */
 703   0x04, 0xf2,   /* addq 4,$acr */
 704   0x6f, 0xfa,   /* move.d [$acr],$acr */
 705   0xbf, 0x09,   /* jump $acr */
 706   0xb0, 0x05,   /* nop */
 707   0, 0,         /*  Pad out to 26 bytes.  */
 708   0, 0, 0, 0,
 709   0, 0, 0, 0
 710 };
 711
 712 /* Subsequent entries in a PIC procedure linkage table look like this.  */
 713
 714 static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] =
 715 {
 716   0x6f, 0x0d,   /*  (bdap [pc+].d,r0) */
 717   0, 0, 0, 0,   /*  Replaced with offset of this symbol in .got.  */
 718   0x30, 0x09,   /* jump [...] */
 719   0x3f, 0x7e,   /* move [pc+],mof */
 720   0, 0, 0, 0,   /*  Replaced with offset into relocation table.  */
 721   0x2f, 0xfe,   /* add.d [pc+],pc */
 722   0xec, 0xff,   /*  Replaced with offset to start of .plt.  */
 723   0xff, 0xff
 724 };
 725
 726 static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
 727 {
 728   0x6f, 0x0d,   /* addo.d 0,$r0,$acr */
 729   0, 0, 0, 0,   /*  Replaced with offset of this symbol in .got.  */
 730   0x6f, 0xfa,   /* move.d [$acr],$acr */
 731   0xbf, 0x09,   /* jump $acr */
 732   0xb0, 0x05,   /* nop */
 733   0x3f, 0x7e,   /* move relocoffs,$mof */
 734   0, 0, 0, 0,   /*  Replaced with offset into relocation table.  */
 735   0xbf, 0x0e,   /* ba start_of_plt */
 736   0, 0, 0, 0,   /*  Replaced with offset to start of .plt.  */
 737   0xb0, 0x05    /* nop */
 738 };
 739 \f
 740 /* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits
 741    (and most other PIC/shlib stuff).  Check that we don't drift away
 742    without reason.
 743
 744    The CRIS linker, like the m68k and i386 linkers (and probably the rest
 745    too) needs to keep track of the number of relocs that it decides to
 746    copy in check_relocs for each symbol.  This is so that it can discard
 747    PC relative relocs if it doesn't need them when linking with
 748    -Bsymbolic.  We store the information in a field extending the regular
 749    ELF linker hash table.  */
 750
 751 /* This structure keeps track of the number of PC relative relocs we have
 752    copied for a given symbol.  */
 753
 754 struct elf_cris_pcrel_relocs_copied
 755 {
 756   /* Next section.  */
 757   struct elf_cris_pcrel_relocs_copied *next;
 758   /* A section in dynobj.  */
 759   asection *section;
 760   /* Number of relocs copied in this section.  */
 761   bfd_size_type count;
 762 };
 763
 764 /* CRIS ELF linker hash entry.  */
 765
 766 struct elf_cris_link_hash_entry
 767 {
 768   struct elf_link_hash_entry root;
 769
 770   /* Number of PC relative relocs copied for this symbol.  */
 771   struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied;
 772
 773   /* The GOTPLT references are CRIS-specific; the goal is to avoid having
 774      both a general GOT and a PLT-specific GOT entry for the same symbol,
 775      when it is referenced both as a function and as a function pointer.
 776
 777      Number of GOTPLT references for a function.  */
 778   bfd_signed_vma gotplt_refcount;
 779
 780   /* Actual GOTPLT index for this symbol, if applicable, or zero if not
 781      (zero is never used as an index).  FIXME: We should be able to fold
 782      this with gotplt_refcount in a union, like the got and plt unions in
 783      elf_link_hash_entry.  */
 784   bfd_size_type gotplt_offset;
 785 };
 786
 787 /* CRIS ELF linker hash table.  */
 788
 789 struct elf_cris_link_hash_table
 790 {
 791   struct elf_link_hash_table root;
 792
 793   /* We can't use the PLT offset and calculate to get the GOTPLT offset,
 794      since we try and avoid creating GOTPLT:s when there's already a GOT.
 795      Instead, we keep and update the next available index here.  */
 796   bfd_size_type next_gotplt_entry;
 797 };
 798
 799 /* Traverse a CRIS ELF linker hash table.  */
 800
 801 #define elf_cris_link_hash_traverse(table, func, info)                  \
 802   (elf_link_hash_traverse                                               \
 803    (&(table)->root,                                                     \
 804     (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
 805     (info)))
 806
 807 /* Get the CRIS ELF linker hash table from a link_info structure.  */
 808
 809 #define elf_cris_hash_table(p) \
 810   ((struct elf_cris_link_hash_table *) (p)->hash)
 811
 812 /* Create an entry in a CRIS ELF linker hash table.  */
 813
 814 static struct bfd_hash_entry *
 815 elf_cris_link_hash_newfunc (entry, table, string)
 816      struct bfd_hash_entry *entry;
 817      struct bfd_hash_table *table;
 818      const char *string;
 819 {
 820   struct elf_cris_link_hash_entry *ret =
 821     (struct elf_cris_link_hash_entry *) entry;
 822
 823   /* Allocate the structure if it has not already been allocated by a
 824      subclass.  */
 825   if (ret == (struct elf_cris_link_hash_entry *) NULL)
 826     ret = ((struct elf_cris_link_hash_entry *)
 827            bfd_hash_allocate (table,
 828                               sizeof (struct elf_cris_link_hash_entry)));
 829   if (ret == (struct elf_cris_link_hash_entry *) NULL)
 830     return (struct bfd_hash_entry *) ret;
 831
 832   /* Call the allocation method of the superclass.  */
 833   ret = ((struct elf_cris_link_hash_entry *)
 834          _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
 835                                      table, string));
 836   if (ret != (struct elf_cris_link_hash_entry *) NULL)
 837     {
 838       ret->pcrel_relocs_copied = NULL;
 839       ret->gotplt_refcount = 0;
 840       ret->gotplt_offset = 0;
 841     }
 842
 843   return (struct bfd_hash_entry *) ret;
 844 }
 845
 846 /* Create a CRIS ELF linker hash table.  */
 847
 848 static struct bfd_link_hash_table *
 849 elf_cris_link_hash_table_create (abfd)
 850      bfd *abfd;
 851 {
 852   struct elf_cris_link_hash_table *ret;
 853   bfd_size_type amt = sizeof (struct elf_cris_link_hash_table);
 854
 855   ret = ((struct elf_cris_link_hash_table *) bfd_malloc (amt));
 856   if (ret == (struct elf_cris_link_hash_table *) NULL)
 857     return NULL;
 858
 859   if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
 860                                       elf_cris_link_hash_newfunc,
 861                                       sizeof (struct elf_cris_link_hash_entry)))
 862     {
 863       free (ret);
 864       return NULL;
 865     }
 866
 867   /* Initialize to skip over the first three entries in the gotplt; they
 868      are used for run-time symbol evaluation.  */
 869   ret->next_gotplt_entry = 12;
 870
 871   return &ret->root.root;
 872 }
 873 \f
 874 /* Perform a single relocation.  By default we use the standard BFD
 875    routines, with a few tweaks.  */
 876
 877 static bfd_reloc_status_type
 878 cris_final_link_relocate (howto, input_bfd, input_section, contents, rel,
 879                           relocation)
 880      reloc_howto_type *  howto;
 881      bfd *               input_bfd;
 882      asection *          input_section;
 883      bfd_byte *          contents;
 884      Elf_Internal_Rela * rel;
 885      bfd_vma             relocation;
 886 {
 887   bfd_reloc_status_type r;
 888
 889   /* PC-relative relocations are relative to the position *after*
 890      the reloc.  Note that for R_CRIS_8_PCREL the adjustment is
 891      not a single byte, since PC must be 16-bit-aligned.  */
 892   switch (ELF32_R_TYPE (rel->r_info))
 893     {
 894       /* Check that the 16-bit GOT relocs are positive.  */
 895     case R_CRIS_16_GOTPLT:
 896     case R_CRIS_16_GOT:
 897       if ((bfd_signed_vma) relocation < 0)
 898         return bfd_reloc_overflow;
 899       break;
 900
 901     case R_CRIS_32_PLT_PCREL:
 902     case R_CRIS_32_PCREL:
 903       relocation -= 2;
 904       /* Fall through.  */
 905     case R_CRIS_8_PCREL:
 906     case R_CRIS_16_PCREL:
 907       relocation -= 2;
 908       break;
 909
 910     default:
 911       break;
 912     }
 913
 914   r = _bfd_final_link_relocate (howto, input_bfd, input_section,
 915                                 contents, rel->r_offset,
 916                                 relocation, rel->r_addend);
 917   return r;
 918 }
 919 \f
 920 /* Relocate an CRIS ELF section.  See elf32-fr30.c, from where this was
 921    copied, for further comments.  */
 922
 923 static bfd_boolean
 924 cris_elf_relocate_section (output_bfd, info, input_bfd, input_section,
 925                            contents, relocs, local_syms, local_sections)
 926      bfd *output_bfd ATTRIBUTE_UNUSED;
 927      struct bfd_link_info *info;
 928      bfd *input_bfd;
 929      asection *input_section;
 930      bfd_byte *contents;
 931      Elf_Internal_Rela *relocs;
 932      Elf_Internal_Sym *local_syms;
 933      asection **local_sections;
 934 {
 935   bfd *dynobj;
 936   Elf_Internal_Shdr *symtab_hdr;
 937   struct elf_link_hash_entry **sym_hashes;
 938   bfd_vma *local_got_offsets;
 939   asection *sgot;
 940   asection *splt;
 941   asection *sreloc;
 942   Elf_Internal_Rela *rel;
 943   Elf_Internal_Rela *relend;
 944
 945   dynobj = elf_hash_table (info)->dynobj;
 946   local_got_offsets = elf_local_got_offsets (input_bfd);
 947   symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
 948   sym_hashes = elf_sym_hashes (input_bfd);
 949   relend     = relocs + input_section->reloc_count;
 950
 951   sgot = NULL;
 952   splt = NULL;
 953   sreloc = NULL;
 954
 955   if (dynobj != NULL)
 956     {
 957       splt = bfd_get_section_by_name (dynobj, ".plt");
 958       sgot = bfd_get_section_by_name (dynobj, ".got");
 959     }
 960
 961   for (rel = relocs; rel < relend; rel ++)
 962     {
 963       reloc_howto_type *howto;
 964       unsigned long r_symndx;
 965       Elf_Internal_Sym *sym;
 966       asection *sec;
 967       struct elf_link_hash_entry *h;
 968       bfd_vma relocation;
 969       bfd_reloc_status_type r;
 970       const char *symname = NULL;
 971       int r_type;
 972
 973       r_type = ELF32_R_TYPE (rel->r_info);
 974
 975       if (   r_type == R_CRIS_GNU_VTINHERIT
 976           || r_type == R_CRIS_GNU_VTENTRY)
 977         continue;
 978
 979       r_symndx = ELF32_R_SYM (rel->r_info);
 980       howto  = cris_elf_howto_table + r_type;
 981       h      = NULL;
 982       sym    = NULL;
 983       sec    = NULL;
 984
 985       if (r_symndx < symtab_hdr->sh_info)
 986         {
 987           sym = local_syms + r_symndx;
 988           sec = local_sections [r_symndx];
 989           relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
 990
 991           symname = (bfd_elf_string_from_elf_section
 992                      (input_bfd, symtab_hdr->sh_link, sym->st_name));
 993           if (symname == NULL)
 994             symname = bfd_section_name (input_bfd, sec);
 995         }
 996       else
 997         {
 998           bfd_boolean warned;
 999           bfd_boolean unresolved_reloc;
1000
1001           RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1002                                    r_symndx, symtab_hdr, sym_hashes,
1003                                    h, sec, relocation,
1004                                    unresolved_reloc, warned);
1005
1006           if (unresolved_reloc
1007               /* Perhaps we should detect the cases that
1008                  sec->output_section is expected to be NULL like i386 and
1009                  m68k, but apparently (and according to elfxx-ia64.c) all
1010                  valid cases are where the symbol is defined in a shared
1011                  object which we link dynamically against.  This includes
1012                  PLT relocs for which we've created a PLT entry and other
1013                  relocs for which we're prepared to create dynamic
1014                  relocations.
1015
1016                  For now, new situations cause us to just err when
1017                  sec->output_offset is NULL but the object with the symbol
1018                  is *not* dynamically linked against.  Thus this will
1019                  automatically remind us so we can see if there are other
1020                  valid cases we need to revisit.  */
1021               && (sec->owner->flags & DYNAMIC) != 0)
1022             relocation = 0;
1023
1024           else if (h->root.type == bfd_link_hash_defined
1025                    || h->root.type == bfd_link_hash_defweak)
1026             {
1027               /* Here follow the cases where the relocation value must
1028                  be zero (or when further handling is simplified when
1029                  zero).  I can't claim to understand the various
1030                  conditions and they weren't described in the files
1031                  where I copied them from (elf32-m68k.c and
1032                  elf32-i386.c), but let's mention examples of where
1033                  they happen.  FIXME: Perhaps define and use a
1034                  dynamic_symbol_p function like ia64.
1035
1036                  - When creating a shared library, we can have an
1037                  ordinary relocation for a symbol defined in a shared
1038                  library (perhaps the one we create).  We then make
1039                  the relocation value zero, as the value seen now will
1040                  be added into the relocation addend in this shared
1041                  library, but must be handled only at dynamic-link
1042                  time.  FIXME: Not sure this example covers the
1043                  h->elf_link_hash_flags test, though it's there in
1044                  other targets.  */
1045               if (info->shared
1046                   && ((! info->symbolic && h->dynindx != -1)
1047                       || !h->def_regular)
1048                   && (input_section->flags & SEC_ALLOC) != 0
1049                   && (r_type == R_CRIS_8
1050                       || r_type == R_CRIS_16
1051                       || r_type == R_CRIS_32
1052                       || r_type == R_CRIS_8_PCREL
1053                       || r_type == R_CRIS_16_PCREL
1054                       || r_type == R_CRIS_32_PCREL))
1055                 relocation = 0;
1056               else if (!info->relocatable && unresolved_reloc)
1057                 {
1058                   _bfd_error_handler
1059                     (_("%B, section %A: unresolvable relocation %s against symbol `%s'"),
1060                      input_bfd,
1061                      input_section,
1062                      cris_elf_howto_table[r_type].name,
1063                      symname);
1064                   bfd_set_error (bfd_error_bad_value);
1065                   return FALSE;
1066                 }
1067             }
1068         }
1069
1070       if (sec != NULL && elf_discarded_section (sec))
1071         {
1072           /* For relocs against symbols from removed linkonce sections,
1073              or sections discarded by a linker script, we just want the
1074              section contents zeroed.  Avoid any special processing.  */
1075           _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
1076           rel->r_info = 0;
1077           rel->r_addend = 0;
1078           continue;
1079         }
1080
1081       if (info->relocatable)
1082         continue;
1083
1084       switch (r_type)
1085         {
1086         case R_CRIS_16_GOTPLT:
1087         case R_CRIS_32_GOTPLT:
1088           /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
1089              but we require a PLT, and the PLT handling will take care of
1090              filling in the PLT-specific GOT entry.  For the GOT offset,
1091              calculate it as we do when filling it in for the .got.plt
1092              section.  If we don't have a PLT, punt to GOT handling.  */
1093           if (h != NULL
1094               && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
1095             {
1096               asection *sgotplt
1097                 = bfd_get_section_by_name (dynobj, ".got.plt");
1098               bfd_vma got_offset;
1099
1100               BFD_ASSERT (h->dynindx != -1);
1101               BFD_ASSERT (sgotplt != NULL);
1102
1103               got_offset
1104                 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
1105
1106               relocation = got_offset;
1107               break;
1108             }
1109
1110           /* We didn't make a PLT entry for this symbol.  Maybe everything is
1111              folded into the GOT.  Other than folding, this happens when
1112              statically linking PIC code, or when using -Bsymbolic.  Check
1113              that we instead have a GOT entry as done for us by
1114              elf_cris_adjust_dynamic_symbol, and drop through into the
1115              ordinary GOT cases.  This must not happen for the
1116              executable, because any reference it does to a function
1117              that is satisfied by a DSO must generate a PLT.  We assume
1118              these call-specific relocs don't address non-functions.  */
1119           if (h != NULL
1120               && (h->got.offset == (bfd_vma) -1
1121                   || (!info->shared
1122                       && !(h->def_regular
1123                            || (!h->def_dynamic
1124                                && h->root.type == bfd_link_hash_undefweak)))))
1125             {
1126               (*_bfd_error_handler)
1127                 ((h->got.offset == (bfd_vma) -1)
1128                  ? _("%B, section %A: No PLT nor GOT for relocation %s"
1129                      " against symbol `%s'")
1130                  : _("%B, section %A: No PLT for relocation %s"
1131                      " against symbol `%s'"),
1132                  input_bfd,
1133                  input_section,
1134                  cris_elf_howto_table[r_type].name,
1135                  (symname != NULL && symname[0] != '\0'
1136                   ? symname : _("[whose name is lost]")));
1137
1138               /* FIXME: Perhaps blaming input is not the right thing to
1139                  do; this is probably an internal error.  But it is true
1140                  that we didn't like that particular input.  */
1141               bfd_set_error (bfd_error_bad_value);
1142               return FALSE;
1143             }
1144           /* Fall through.  */
1145
1146           /* The size of the actual relocation is not used here; we only
1147              fill in the GOT table here.  */
1148         case R_CRIS_16_GOT:
1149         case R_CRIS_32_GOT:
1150           {
1151             bfd_vma off;
1152
1153             /* Note that despite using RELA relocations, the .got contents
1154                is always filled in with the link-relative relocation
1155                value; the addend.  */
1156
1157             if (h != NULL)
1158               {
1159                 off = h->got.offset;
1160                 BFD_ASSERT (off != (bfd_vma) -1);
1161
1162                 if (!elf_hash_table (info)->dynamic_sections_created
1163                     || (! info->shared
1164                         && (h->def_regular
1165                             || h->type == STT_FUNC
1166                             || h->needs_plt))
1167                     || (info->shared
1168                         && (info->symbolic || h->dynindx == -1)
1169                         && h->def_regular))
1170                   {
1171                     /* This wasn't checked above for ! info->shared, but
1172                        must hold there if we get here; the symbol must
1173                        be defined in the regular program or be undefweak
1174                        or be a function or otherwise need a PLT.  */
1175                     BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created
1176                                 || info->shared
1177                                 || h->def_regular
1178                                 || h->type == STT_FUNC
1179                                 || h->needs_plt
1180                                 || h->root.type == bfd_link_hash_undefweak);
1181
1182                     /* This is actually a static link, or it is a
1183                        -Bsymbolic link and the symbol is defined locally,
1184                        or is undefweak, or the symbol was forced to be
1185                        local because of a version file, or we're not
1186                        creating a dynamic object.  We must initialize this
1187                        entry in the global offset table.  Since the offset
1188                        must always be a multiple of 4, we use the least
1189                        significant bit to record whether we have
1190                        initialized it already.
1191
1192                        If this GOT entry should be runtime-initialized, we
1193                        will create a .rela.got relocation entry to
1194                        initialize the value.  This is done in the
1195                        finish_dynamic_symbol routine.  */
1196                     if ((off & 1) != 0)
1197                       off &= ~1;
1198                     else
1199                       {
1200                         bfd_put_32 (output_bfd, relocation,
1201                                     sgot->contents + off);
1202                         h->got.offset |= 1;
1203                       }
1204                   }
1205               }
1206             else
1207               {
1208                 BFD_ASSERT (local_got_offsets != NULL
1209                             && local_got_offsets[r_symndx] != (bfd_vma) -1);
1210
1211                 off = local_got_offsets[r_symndx];
1212
1213                 /* The offset must always be a multiple of 4.  We use
1214                    the least significant bit to record whether we have
1215                    already generated the necessary reloc.  */
1216                 if ((off & 1) != 0)
1217                   off &= ~1;
1218                 else
1219                   {
1220                     bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1221
1222                     if (info->shared)
1223                       {
1224                         asection *s;
1225                         Elf_Internal_Rela outrel;
1226                         bfd_byte *loc;
1227
1228                         s = bfd_get_section_by_name (dynobj, ".rela.got");
1229                         BFD_ASSERT (s != NULL);
1230
1231                         outrel.r_offset = (sgot->output_section->vma
1232                                            + sgot->output_offset
1233                                            + off);
1234                         outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1235                         outrel.r_addend = relocation;
1236                         loc = s->contents;
1237                         loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
1238                         bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1239                       }
1240
1241                     local_got_offsets[r_symndx] |= 1;
1242                   }
1243               }
1244
1245             relocation = sgot->output_offset + off;
1246             if (rel->r_addend != 0)
1247               {
1248                 /* We can't do anything for a relocation which is against
1249                    a symbol *plus offset*.  GOT holds relocations for
1250                    symbols.  Make this an error; the compiler isn't
1251                    allowed to pass us these kinds of things.  */
1252                 if (h == NULL)
1253                   (*_bfd_error_handler)
1254                     (_("%B, section %A: relocation %s with non-zero addend %d"
1255                        " against local symbol"),
1256                      input_bfd,
1257                      input_section,
1258                      cris_elf_howto_table[r_type].name,
1259                      rel->r_addend);
1260                 else
1261                   (*_bfd_error_handler)
1262                     (_("%B, section %A: relocation %s with non-zero addend %d"
1263                        " against symbol `%s'"),
1264                      input_bfd,
1265                      input_section,
1266                      cris_elf_howto_table[r_type].name,
1267                      rel->r_addend,
1268                      symname[0] != '\0' ? symname : _("[whose name is lost]"));
1269
1270                 bfd_set_error (bfd_error_bad_value);
1271                 return FALSE;
1272               }
1273           }
1274           break;
1275
1276         case R_CRIS_32_GOTREL:
1277           /* This relocation must only be performed against local symbols.
1278              It's also ok when we link a program and the symbol is either
1279              defined in an ordinary (non-DSO) object or is undefined weak.  */
1280           if (h != NULL
1281               && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1282               && !(!info->shared
1283                    && (h->def_regular
1284                        || (!h->def_dynamic
1285                            && h->root.type == bfd_link_hash_undefweak))))
1286             {
1287               (*_bfd_error_handler)
1288                 (_("%B, section %A: relocation %s is"
1289                    " not allowed for global symbol: `%s'"),
1290                  input_bfd,
1291                  input_section,
1292                  cris_elf_howto_table[r_type].name,
1293                  symname);
1294               bfd_set_error (bfd_error_bad_value);
1295               return FALSE;
1296             }
1297
1298           /* This can happen if we get a link error with the input ELF
1299              variant mismatching the output variant.  Emit an error so
1300              it's noticed if it happens elsewhere.  */
1301           if (sgot == NULL)
1302             {
1303               (*_bfd_error_handler)
1304                 (_("%B, section %A: relocation %s with no GOT created"),
1305                  input_bfd,
1306                  input_section,
1307                  cris_elf_howto_table[r_type].name);
1308               bfd_set_error (bfd_error_bad_value);
1309               return FALSE;
1310             }
1311
1312           /* This relocation is like a PC-relative one, except the
1313              reference point is the location of GOT.  Note that
1314              sgot->output_offset is not involved in this calculation.  We
1315              always want the start of entire .got section, not the
1316              position after the reserved header.  */
1317           relocation -= sgot->output_section->vma;
1318           break;
1319
1320         case R_CRIS_32_PLT_PCREL:
1321           /* Relocation is to the entry for this symbol in the
1322              procedure linkage table.  */
1323
1324           /* Resolve a PLT_PCREL reloc against a local symbol directly,
1325              without using the procedure linkage table.  */
1326           if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1327             break;
1328
1329           if (h->plt.offset == (bfd_vma) -1
1330               || splt == NULL)
1331             {
1332               /* We didn't make a PLT entry for this symbol.  This
1333                  happens when statically linking PIC code, or when
1334                  using -Bsymbolic.  */
1335               break;
1336             }
1337
1338           relocation = (splt->output_section->vma
1339                         + splt->output_offset
1340                         + h->plt.offset);
1341           break;
1342
1343         case R_CRIS_32_PLT_GOTREL:
1344           /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1345              start of the .got section.  See also comment at
1346              R_CRIS_32_GOT.  */
1347           relocation -= sgot->output_section->vma;
1348
1349           /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1350              without using the procedure linkage table.  */
1351           if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1352             break;
1353
1354           if (h->plt.offset == (bfd_vma) -1
1355               || splt == NULL)
1356             {
1357               /* We didn't make a PLT entry for this symbol.  This
1358                  happens when statically linking PIC code, or when
1359                  using -Bsymbolic.  */
1360               break;
1361             }
1362
1363           relocation = (splt->output_section->vma
1364                         + splt->output_offset
1365                         + h->plt.offset
1366                         - sgot->output_section->vma);
1367           break;
1368
1369         case R_CRIS_8_PCREL:
1370         case R_CRIS_16_PCREL:
1371         case R_CRIS_32_PCREL:
1372           /* If the symbol was local, we need no shlib-specific handling.  */
1373           if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1374             break;
1375
1376           /* Fall through.  */
1377         case R_CRIS_8:
1378         case R_CRIS_16:
1379         case R_CRIS_32:
1380           if (info->shared
1381               && r_symndx != 0
1382               && (input_section->flags & SEC_ALLOC) != 0
1383               && ((r_type != R_CRIS_8_PCREL
1384                    && r_type != R_CRIS_16_PCREL
1385                    && r_type != R_CRIS_32_PCREL)
1386                   || (!info->symbolic
1387                       || !h->def_regular)))
1388             {
1389               Elf_Internal_Rela outrel;
1390               bfd_byte *loc;
1391               bfd_boolean skip, relocate;
1392
1393               /* When generating a shared object, these relocations
1394                  are copied into the output file to be resolved at run
1395                  time.  */
1396
1397               if (sreloc == NULL)
1398                 {
1399                   const char *name;
1400
1401                   name = (bfd_elf_string_from_elf_section
1402                           (input_bfd,
1403                            elf_elfheader (input_bfd)->e_shstrndx,
1404                            elf_section_data (input_section)->rel_hdr.sh_name));
1405                   if (name == NULL)
1406                     return FALSE;
1407
1408                   BFD_ASSERT (CONST_STRNEQ (name, ".rela")
1409                               && strcmp (bfd_get_section_name (input_bfd,
1410                                                                input_section),
1411                                          name + 5) == 0);
1412
1413                   sreloc = bfd_get_section_by_name (dynobj, name);
1414
1415                   /* That section should have been created in
1416                      cris_elf_check_relocs, but that function will not be
1417                      called for objects which fail in
1418                      cris_elf_merge_private_bfd_data.  */
1419                   if (sreloc == NULL)
1420                     {
1421                       (*_bfd_error_handler)
1422                         (_("%B: Internal inconsistency; no relocation section %s"),
1423                          input_bfd,
1424                          name);
1425
1426                       bfd_set_error (bfd_error_bad_value);
1427                       return FALSE;
1428                     }
1429                 }
1430
1431               skip = FALSE;
1432               relocate = FALSE;
1433
1434               outrel.r_offset =
1435                 _bfd_elf_section_offset (output_bfd, info, input_section,
1436                                          rel->r_offset);
1437               if (outrel.r_offset == (bfd_vma) -1)
1438                 skip = TRUE;
1439               else if (outrel.r_offset == (bfd_vma) -2)
1440                 skip = TRUE, relocate = TRUE;
1441               outrel.r_offset += (input_section->output_section->vma
1442                                   + input_section->output_offset);
1443
1444               if (skip)
1445                 memset (&outrel, 0, sizeof outrel);
1446               /* h->dynindx may be -1 if the symbol was marked to
1447                  become local.  */
1448               else if (h != NULL
1449                        && ((! info->symbolic && h->dynindx != -1)
1450                            || !h->def_regular))
1451                 {
1452                   BFD_ASSERT (h->dynindx != -1);
1453                   outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1454                   outrel.r_addend = relocation + rel->r_addend;
1455                 }
1456               else
1457                 {
1458                   outrel.r_addend = relocation + rel->r_addend;
1459
1460                   if (r_type == R_CRIS_32)
1461                     {
1462                       relocate = TRUE;
1463                       outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1464                     }
1465                   else
1466                     {
1467                       long indx;
1468
1469                       if (bfd_is_abs_section (sec))
1470                         indx = 0;
1471                       else if (sec == NULL || sec->owner == NULL)
1472                         {
1473                           bfd_set_error (bfd_error_bad_value);
1474                           return FALSE;
1475                         }
1476                       else
1477                         {
1478                           asection *osec;
1479
1480                           /* We are turning this relocation into one
1481                              against a section symbol.  It would be
1482                              proper to subtract the symbol's value,
1483                              osec->vma, from the emitted reloc addend,
1484                              but ld.so expects buggy relocs.  */
1485                           osec = sec->output_section;
1486                           indx = elf_section_data (osec)->dynindx;
1487                           if (indx == 0)
1488                             {
1489                               struct elf_cris_link_hash_table *htab;
1490                               htab = elf_cris_hash_table (info);
1491                               osec = htab->root.text_index_section;
1492                               indx = elf_section_data (osec)->dynindx;
1493                             }
1494                           BFD_ASSERT (indx != 0);
1495                         }
1496
1497                       outrel.r_info = ELF32_R_INFO (indx, r_type);
1498                     }
1499                 }
1500
1501               loc = sreloc->contents;
1502               loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1503               bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1504
1505               /* This reloc will be computed at runtime, so there's no
1506                  need to do anything now, except for R_CRIS_32 relocations
1507                  that have been turned into R_CRIS_RELATIVE.  */
1508               if (!relocate)
1509                 continue;
1510             }
1511
1512           break;
1513         }
1514
1515       r = cris_final_link_relocate (howto, input_bfd, input_section,
1516                                      contents, rel, relocation);
1517
1518       if (r != bfd_reloc_ok)
1519         {
1520           const char * msg = (const char *) NULL;
1521
1522           switch (r)
1523             {
1524             case bfd_reloc_overflow:
1525               r = info->callbacks->reloc_overflow
1526                 (info, (h ? &h->root : NULL), symname, howto->name,
1527                  (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
1528               break;
1529
1530             case bfd_reloc_undefined:
1531               r = info->callbacks->undefined_symbol
1532                 (info, symname, input_bfd, input_section, rel->r_offset,
1533                  TRUE);
1534               break;
1535
1536             case bfd_reloc_outofrange:
1537               msg = _("internal error: out of range error");
1538               break;
1539
1540             case bfd_reloc_notsupported:
1541               msg = _("internal error: unsupported relocation error");
1542               break;
1543
1544             case bfd_reloc_dangerous:
1545               msg = _("internal error: dangerous relocation");
1546               break;
1547
1548             default:
1549               msg = _("internal error: unknown error");
1550               break;
1551             }
1552
1553           if (msg)
1554             r = info->callbacks->warning
1555               (info, msg, symname, input_bfd, input_section, rel->r_offset);
1556
1557           if (! r)
1558             return FALSE;
1559         }
1560     }
1561
1562   return TRUE;
1563 }
1564 \f
1565 /* Finish up dynamic symbol handling.  We set the contents of various
1566    dynamic sections here.  */
1567
1568 static bfd_boolean
1569 elf_cris_finish_dynamic_symbol (output_bfd, info, h, sym)
1570      bfd *output_bfd;
1571      struct bfd_link_info *info;
1572      struct elf_link_hash_entry *h;
1573      Elf_Internal_Sym *sym;
1574 {
1575   bfd *dynobj;
1576
1577   /* Where in the plt entry to put values.  */
1578   int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
1579
1580   /* What offset to add to the distance to the first PLT entry for the
1581      value at plt_off3.   */
1582   int plt_off3_value_bias = 4;
1583
1584   /* Where in the PLT entry the call-dynlink-stub is (happens to be same
1585      for PIC and non-PIC for v32 and pre-v32).  */
1586   int plt_stub_offset = 8;
1587   int plt_entry_size = PLT_ENTRY_SIZE;
1588   const bfd_byte *plt_entry = elf_cris_plt_entry;
1589   const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
1590
1591   /* Adjust the various PLT entry offsets.  */
1592   if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
1593     {
1594       plt_off2 = 14;
1595       plt_off3 = 20;
1596       plt_off3_value_bias = -2;
1597       plt_stub_offset = 12;
1598       plt_entry_size = PLT_ENTRY_SIZE_V32;
1599       plt_entry = elf_cris_plt_entry_v32;
1600       plt_pic_entry = elf_cris_pic_plt_entry_v32;
1601     }
1602
1603   dynobj = elf_hash_table (info)->dynobj;
1604
1605   if (h->plt.offset != (bfd_vma) -1)
1606     {
1607       asection *splt;
1608       asection *sgotplt;
1609       asection *sgot;
1610       asection *srela;
1611       bfd_vma got_base;
1612
1613       bfd_vma gotplt_offset
1614         = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
1615       Elf_Internal_Rela rela;
1616       bfd_byte *loc;
1617       bfd_boolean has_gotplt = gotplt_offset != 0;
1618
1619       /* Get the index in the procedure linkage table which
1620          corresponds to this symbol.  This is the index of this symbol
1621          in all the symbols for which we are making plt entries.  The
1622          first entry in the procedure linkage table is reserved.  */
1623       /* We have to count backwards here, and the result is only valid as
1624          an index into .got.plt and its relocations.  FIXME: Constants...  */
1625       bfd_vma gotplt_index = gotplt_offset/4 - 3;
1626
1627       /* Get the offset into the .got table of the entry that corresponds
1628          to this function.  Note that we embed knowledge that "incoming"
1629          .got goes after .got.plt in the output without padding (pointer
1630          aligned).  However, that knowledge is present in several other
1631          places too.  */
1632       bfd_vma got_offset
1633         = (has_gotplt
1634            ? gotplt_offset
1635            : h->got.offset + elf_cris_hash_table(info)->next_gotplt_entry);
1636
1637       /* This symbol has an entry in the procedure linkage table.  Set it
1638          up.  */
1639
1640       BFD_ASSERT (h->dynindx != -1);
1641
1642       splt = bfd_get_section_by_name (dynobj, ".plt");
1643       sgot = bfd_get_section_by_name (dynobj, ".got");
1644       sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1645       srela = bfd_get_section_by_name (dynobj, ".rela.plt");
1646       BFD_ASSERT (splt != NULL && sgotplt != NULL
1647                   && (! has_gotplt || srela != NULL));
1648
1649       got_base = sgotplt->output_section->vma + sgotplt->output_offset;
1650
1651       /* Fill in the entry in the procedure linkage table.  */
1652       if (! info->shared)
1653         {
1654           memcpy (splt->contents + h->plt.offset, plt_entry,
1655                   plt_entry_size);
1656
1657           /* We need to enter the absolute address of the GOT entry here.  */
1658           bfd_put_32 (output_bfd, got_base + got_offset,
1659                       splt->contents + h->plt.offset + plt_off1);
1660         }
1661       else
1662         {
1663           memcpy (splt->contents + h->plt.offset, plt_pic_entry,
1664                   plt_entry_size);
1665           bfd_put_32 (output_bfd, got_offset,
1666                       splt->contents + h->plt.offset + plt_off1);
1667         }
1668
1669       /* Fill in the plt entry and make a relocation, if this is a "real"
1670          PLT entry.  */
1671       if (has_gotplt)
1672         {
1673           /* Fill in the offset to the reloc table.  */
1674           bfd_put_32 (output_bfd,
1675                       gotplt_index * sizeof (Elf32_External_Rela),
1676                       splt->contents + h->plt.offset + plt_off2);
1677
1678           /* Fill in the offset to the first PLT entry, where to "jump".  */
1679           bfd_put_32 (output_bfd,
1680                       - (h->plt.offset + plt_off3 + plt_off3_value_bias),
1681                       splt->contents + h->plt.offset + plt_off3);
1682
1683           /* Fill in the entry in the global offset table with the address of
1684              the relocating stub.  */
1685           bfd_put_32 (output_bfd,
1686                       (splt->output_section->vma
1687                        + splt->output_offset
1688                        + h->plt.offset
1689                        + plt_stub_offset),
1690                       sgotplt->contents + got_offset);
1691
1692           /* Fill in the entry in the .rela.plt section.  */
1693           rela.r_offset = (sgotplt->output_section->vma
1694                            + sgotplt->output_offset
1695                            + got_offset);
1696           rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
1697           rela.r_addend = 0;
1698           loc = srela->contents + gotplt_index * sizeof (Elf32_External_Rela);
1699           bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1700         }
1701
1702       if (!h->def_regular)
1703         {
1704           /* Mark the symbol as undefined, rather than as defined in
1705              the .plt section.  Leave the value alone.  */
1706           sym->st_shndx = SHN_UNDEF;
1707
1708           /* FIXME: From elf32-sparc.c 2001-02-19 (1.18).  I still don't
1709              know whether resetting the value is significant; if it really
1710              is, rather than a quirk or bug in the sparc port, then I
1711              believe we'd see this elsewhere.  */
1712           /* If the symbol is weak, we do need to clear the value.
1713              Otherwise, the PLT entry would provide a definition for
1714              the symbol even if the symbol wasn't defined anywhere,
1715              and so the symbol would never be NULL.  */
1716           if (!h->ref_regular_nonweak)
1717             sym->st_value = 0;
1718         }
1719     }
1720
1721   /* For an ordinary program, we emit .got relocs only for symbols that
1722      are in the dynamic-symbols table and are either defined by the
1723      program or are undefined weak symbols, or are function symbols
1724      where we do not output a PLT: the PLT reloc was output above and all
1725      references to the function symbol are redirected to the PLT.  */
1726   if (h->got.offset != (bfd_vma) -1
1727       && (info->shared
1728           || (h->dynindx != -1
1729               && h->plt.offset == (bfd_vma) -1
1730               && !h->def_regular
1731               && h->root.type != bfd_link_hash_undefweak)))
1732     {
1733       asection *sgot;
1734       asection *srela;
1735       Elf_Internal_Rela rela;
1736       bfd_byte *loc;
1737       bfd_byte *where;
1738
1739       /* This symbol has an entry in the global offset table.  Set it up.  */
1740
1741       sgot = bfd_get_section_by_name (dynobj, ".got");
1742       srela = bfd_get_section_by_name (dynobj, ".rela.got");
1743       BFD_ASSERT (sgot != NULL && srela != NULL);
1744
1745       rela.r_offset = (sgot->output_section->vma
1746                        + sgot->output_offset
1747                        + (h->got.offset &~ (bfd_vma) 1));
1748
1749       /* If this is a static link, or it is a -Bsymbolic link and the
1750          symbol is defined locally or was forced to be local because
1751          of a version file, we just want to emit a RELATIVE reloc.
1752          The entry in the global offset table will already have been
1753          initialized in the relocate_section function.  */
1754       where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
1755       if (! elf_hash_table (info)->dynamic_sections_created
1756           || (info->shared
1757               && (info->symbolic || h->dynindx == -1)
1758               && h->def_regular))
1759         {
1760           rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1761           rela.r_addend = bfd_get_signed_32 (output_bfd, where);
1762         }
1763       else
1764         {
1765           bfd_put_32 (output_bfd, (bfd_vma) 0, where);
1766           rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
1767           rela.r_addend = 0;
1768         }
1769
1770       loc = srela->contents;
1771       loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
1772       bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1773     }
1774
1775   if (h->needs_copy)
1776     {
1777       asection *s;
1778       Elf_Internal_Rela rela;
1779       bfd_byte *loc;
1780
1781       /* This symbol needs a copy reloc.  Set it up.  */
1782
1783       BFD_ASSERT (h->dynindx != -1
1784                   && (h->root.type == bfd_link_hash_defined
1785                       || h->root.type == bfd_link_hash_defweak));
1786
1787       s = bfd_get_section_by_name (h->root.u.def.section->owner,
1788                                    ".rela.bss");
1789       BFD_ASSERT (s != NULL);
1790
1791       rela.r_offset = (h->root.u.def.value
1792                        + h->root.u.def.section->output_section->vma
1793                        + h->root.u.def.section->output_offset);
1794       rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
1795       rela.r_addend = 0;
1796       loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
1797       bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1798     }
1799
1800   /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute.  */
1801   if (strcmp (h->root.root.string, "_DYNAMIC") == 0
1802       || h == elf_hash_table (info)->hgot)
1803     sym->st_shndx = SHN_ABS;
1804
1805   return TRUE;
1806 }
1807 \f
1808 /* Finish up the dynamic sections.  */
1809
1810 static bfd_boolean
1811 elf_cris_finish_dynamic_sections (output_bfd, info)
1812      bfd *output_bfd;
1813      struct bfd_link_info *info;
1814 {
1815   bfd *dynobj;
1816   asection *sgot;
1817   asection *sdyn;
1818
1819   dynobj = elf_hash_table (info)->dynobj;
1820
1821   sgot = bfd_get_section_by_name (dynobj, ".got.plt");
1822   BFD_ASSERT (sgot != NULL);
1823   sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
1824
1825   if (elf_hash_table (info)->dynamic_sections_created)
1826     {
1827       asection *splt;
1828       Elf32_External_Dyn *dyncon, *dynconend;
1829
1830       splt = bfd_get_section_by_name (dynobj, ".plt");
1831       BFD_ASSERT (splt != NULL && sdyn != NULL);
1832
1833       dyncon = (Elf32_External_Dyn *) sdyn->contents;
1834       dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
1835       for (; dyncon < dynconend; dyncon++)
1836         {
1837           Elf_Internal_Dyn dyn;
1838           asection *s;
1839
1840           bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
1841
1842           switch (dyn.d_tag)
1843             {
1844             default:
1845               break;
1846
1847             case DT_PLTGOT:
1848               s = bfd_get_section_by_name (output_bfd, ".got");
1849               BFD_ASSERT (s != NULL);
1850               dyn.d_un.d_ptr = s->vma;
1851               bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1852               break;
1853
1854             case DT_JMPREL:
1855               /* Yes, we *can* have a .plt and no .plt.rela, for instance
1856                  if all symbols are found in the .got (not .got.plt).  */
1857               s = bfd_get_section_by_name (output_bfd, ".rela.plt");
1858               dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
1859               bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1860               break;
1861
1862             case DT_PLTRELSZ:
1863               s = bfd_get_section_by_name (output_bfd, ".rela.plt");
1864               if (s == NULL)
1865                 dyn.d_un.d_val = 0;
1866               else
1867                 dyn.d_un.d_val = s->size;
1868               bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1869               break;
1870
1871             case DT_RELASZ:
1872               /* The procedure linkage table relocs (DT_JMPREL) should
1873                  not be included in the overall relocs (DT_RELA).
1874                  Therefore, we override the DT_RELASZ entry here to
1875                  make it not include the JMPREL relocs.  Since the
1876                  linker script arranges for .rela.plt to follow all
1877                  other relocation sections, we don't have to worry
1878                  about changing the DT_RELA entry.  */
1879               s = bfd_get_section_by_name (output_bfd, ".rela.plt");
1880               if (s != NULL)
1881                 dyn.d_un.d_val -= s->size;
1882               bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1883               break;
1884             }
1885         }
1886
1887       /* Fill in the first entry in the procedure linkage table.  */
1888       if (splt->size > 0)
1889         {
1890           if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
1891             {
1892               if (info->shared)
1893                 memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
1894                         PLT_ENTRY_SIZE_V32);
1895               else
1896                 {
1897                   memcpy (splt->contents, elf_cris_plt0_entry_v32,
1898                           PLT_ENTRY_SIZE_V32);
1899                   bfd_put_32 (output_bfd,
1900                               sgot->output_section->vma
1901                               + sgot->output_offset + 4,
1902                               splt->contents + 4);
1903
1904                   elf_section_data (splt->output_section)->this_hdr.sh_entsize
1905                     = PLT_ENTRY_SIZE_V32;
1906                 }
1907             }
1908           else
1909             {
1910               if (info->shared)
1911                 memcpy (splt->contents, elf_cris_pic_plt0_entry,
1912                         PLT_ENTRY_SIZE);
1913               else
1914                 {
1915                   memcpy (splt->contents, elf_cris_plt0_entry,
1916                           PLT_ENTRY_SIZE);
1917                   bfd_put_32 (output_bfd,
1918                               sgot->output_section->vma
1919                               + sgot->output_offset + 4,
1920                               splt->contents + 6);
1921                   bfd_put_32 (output_bfd,
1922                               sgot->output_section->vma
1923                               + sgot->output_offset + 8,
1924                               splt->contents + 14);
1925
1926                   elf_section_data (splt->output_section)->this_hdr.sh_entsize
1927                     = PLT_ENTRY_SIZE;
1928                 }
1929             }
1930         }
1931     }
1932
1933   /* Fill in the first three entries in the global offset table.  */
1934   if (sgot->size > 0)
1935     {
1936       if (sdyn == NULL)
1937         bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
1938       else
1939         bfd_put_32 (output_bfd,
1940                     sdyn->output_section->vma + sdyn->output_offset,
1941                     sgot->contents);
1942       bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
1943       bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
1944     }
1945
1946   elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
1947
1948   return TRUE;
1949 }
1950 \f
1951 /* Return the section that should be marked against GC for a given
1952    relocation.  */
1953
1954 static asection *
1955 cris_elf_gc_mark_hook (asection *sec,
1956                        struct bfd_link_info *info,
1957                        Elf_Internal_Rela *rel,
1958                        struct elf_link_hash_entry *h,
1959                        Elf_Internal_Sym *sym)
1960 {
1961   if (h != NULL)
1962     switch (ELF32_R_TYPE (rel->r_info))
1963       {
1964       case R_CRIS_GNU_VTINHERIT:
1965       case R_CRIS_GNU_VTENTRY:
1966         return NULL;
1967       }
1968
1969   return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1970 }
1971
1972 /* Update the got entry reference counts for the section being removed.  */
1973
1974 static bfd_boolean
1975 cris_elf_gc_sweep_hook (bfd *abfd,
1976                         struct bfd_link_info *info,
1977                         asection *sec,
1978                         const Elf_Internal_Rela *relocs)
1979 {
1980   Elf_Internal_Shdr *symtab_hdr;
1981   struct elf_link_hash_entry **sym_hashes;
1982   bfd_signed_vma *local_got_refcounts;
1983   const Elf_Internal_Rela *rel, *relend;
1984   bfd *dynobj;
1985   asection *sgot;
1986   asection *srelgot;
1987
1988   dynobj = elf_hash_table (info)->dynobj;
1989   if (dynobj == NULL)
1990     return TRUE;
1991
1992   symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1993   sym_hashes = elf_sym_hashes (abfd);
1994   local_got_refcounts = elf_local_got_refcounts (abfd);
1995
1996   sgot = bfd_get_section_by_name (dynobj, ".got");
1997   srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1998
1999   relend = relocs + sec->reloc_count;
2000   for (rel = relocs; rel < relend; rel++)
2001     {
2002       unsigned long r_symndx;
2003       struct elf_link_hash_entry *h = NULL;
2004
2005       r_symndx = ELF32_R_SYM (rel->r_info);
2006       if (r_symndx >= symtab_hdr->sh_info)
2007         {
2008           h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2009           while (h->root.type == bfd_link_hash_indirect
2010                  || h->root.type == bfd_link_hash_warning)
2011             h = (struct elf_link_hash_entry *) h->root.u.i.link;
2012         }
2013
2014       switch (ELF32_R_TYPE (rel->r_info))
2015         {
2016         case R_CRIS_16_GOT:
2017         case R_CRIS_32_GOT:
2018           if (h != NULL)
2019             {
2020               if (h->got.refcount > 0)
2021                 {
2022                   --h->got.refcount;
2023                   if (h->got.refcount == 0)
2024                     {
2025                       /* We don't need the .got entry any more.  */
2026                       sgot->size -= 4;
2027                       srelgot->size -= sizeof (Elf32_External_Rela);
2028                     }
2029                 }
2030               break;
2031             }
2032
2033         local_got_reloc:
2034           if (local_got_refcounts != NULL)
2035             {
2036               if (local_got_refcounts[r_symndx] > 0)
2037                 {
2038                   --local_got_refcounts[r_symndx];
2039                   if (local_got_refcounts[r_symndx] == 0)
2040                     {
2041                       /* We don't need the .got entry any more.  */
2042                       sgot->size -= 4;
2043                       if (info->shared)
2044                         srelgot->size -= sizeof (Elf32_External_Rela);
2045                     }
2046                 }
2047             }
2048           break;
2049
2050         case R_CRIS_16_GOTPLT:
2051         case R_CRIS_32_GOTPLT:
2052           /* For local symbols, treat these like GOT relocs.  */
2053           if (h == NULL)
2054             goto local_got_reloc;
2055           /* Fall through.  */
2056
2057         case R_CRIS_32_PLT_GOTREL:
2058           /* FIXME: We don't garbage-collect away the .got section.  */
2059           if (local_got_refcounts != NULL)
2060             local_got_refcounts[-1]--;
2061           /* Fall through.  */
2062
2063         case R_CRIS_8_PCREL:
2064         case R_CRIS_16_PCREL:
2065         case R_CRIS_32_PCREL:
2066         case R_CRIS_32_PLT_PCREL:
2067           if (h != NULL)
2068             {
2069               if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2070                   && h->plt.refcount > 0)
2071                 --h->plt.refcount;
2072             }
2073           break;
2074
2075         default:
2076           break;
2077         }
2078     }
2079
2080   return TRUE;
2081 }
2082
2083 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2084    entry but we found we will not create any.  Called when we find we will
2085    not have any PLT for this symbol, by for example
2086    elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2087    or elf_cris_size_dynamic_sections if no dynamic sections will be
2088    created (we're only linking static objects).  */
2089
2090 static bfd_boolean
2091 elf_cris_adjust_gotplt_to_got (h, p)
2092      struct elf_cris_link_hash_entry *h;
2093      PTR p;
2094 {
2095   struct bfd_link_info *info = (struct bfd_link_info *) p;
2096
2097   if (h->root.root.type == bfd_link_hash_warning)
2098     h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
2099
2100   /* If nobody wanted a GOTPLT with this symbol, we're done.  */
2101   if (h->gotplt_refcount <= 0)
2102     return TRUE;
2103
2104   if (h->root.got.refcount > 0)
2105     {
2106       /* There's a GOT entry for this symbol.  Just adjust the refcount.
2107          Probably not necessary at this stage, but keeping it accurate
2108          helps avoiding surprises later.  */
2109       h->root.got.refcount += h->gotplt_refcount;
2110       h->gotplt_refcount = 0;
2111     }
2112   else
2113     {
2114       /* No GOT entry for this symbol.  We need to create one.  */
2115       bfd *dynobj = elf_hash_table (info)->dynobj;
2116       asection *sgot;
2117       asection *srelgot;
2118
2119       BFD_ASSERT (dynobj != NULL);
2120       sgot = bfd_get_section_by_name (dynobj, ".got");
2121       srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2122
2123       /* Put an accurate refcount there.  */
2124       h->root.got.refcount = h->gotplt_refcount;
2125
2126       h->gotplt_refcount = 0;
2127
2128       /* We always have a .got and a .rela.got section if there were
2129          GOTPLT relocs in input.  */
2130       BFD_ASSERT (sgot != NULL && srelgot != NULL);
2131
2132       /* Allocate space in the .got section.  */
2133       sgot->size += 4;
2134
2135       /* Allocate relocation space.  */
2136       srelgot->size += sizeof (Elf32_External_Rela);
2137     }
2138
2139   return TRUE;
2140 }
2141
2142 /* Try to fold PLT entries with GOT entries.  There are two cases when we
2143    want to do this:
2144
2145    - When all PLT references are GOTPLT references, and there are GOT
2146      references, and this is not the executable.  We don't have to
2147      generate a PLT at all.
2148
2149    - When there are both (ordinary) PLT references and GOT references,
2150      and this isn't the executable.
2151      We want to make the PLT reference use the ordinary GOT entry rather
2152      than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2153      since the GOT entry will have to be resolved at startup anyway.
2154
2155    Though the latter case is handled when room for the PLT is allocated,
2156    not here.
2157
2158    By folding into the GOT, we may need a round-trip to a PLT in the
2159    executable for calls, a loss in performance.  Still, losing a
2160    reloc is a win in size and at least in start-up time.
2161
2162    Note that this function is called before symbols are forced local by
2163    version scripts.  The differing cases are handled by
2164    elf_cris_hide_symbol.  */
2165
2166 static bfd_boolean
2167 elf_cris_try_fold_plt_to_got (h, p)
2168      struct elf_cris_link_hash_entry *h;
2169      PTR p;
2170 {
2171   struct bfd_link_info *info = (struct bfd_link_info *) p;
2172
2173   /* If there are no GOT references for this symbol, we can't fold any
2174      other reference so there's nothing to do.  Likewise if there are no
2175      PLT references; GOTPLT references included.  */
2176   if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
2177     return TRUE;
2178
2179   /* GOTPLT relocs are supposed to be included into the PLT refcount.  */
2180   BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2181
2182   if (h->gotplt_refcount == h->root.plt.refcount)
2183     {
2184       /* The only PLT references are GOTPLT references, and there are GOT
2185          references.  Convert PLT to GOT references.  */
2186       if (! elf_cris_adjust_gotplt_to_got (h, info))
2187         return FALSE;
2188
2189       /* Clear the PLT references, so no PLT will be created.  */
2190       h->root.plt.offset = (bfd_vma) -1;
2191     }
2192
2193   return TRUE;
2194 }
2195
2196 /* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2197    to use a GOT entry (and create one) rather than requiring a GOTPLT
2198    entry.  */
2199
2200 static void
2201 elf_cris_hide_symbol (info, h, force_local)
2202      struct bfd_link_info *info;
2203      struct elf_link_hash_entry *h;
2204      bfd_boolean force_local;
2205 {
2206   elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2207
2208   _bfd_elf_link_hash_hide_symbol (info, h, force_local);
2209 }
2210
2211 /* Adjust a symbol defined by a dynamic object and referenced by a
2212    regular object.  The current definition is in some section of the
2213    dynamic object, but we're not including those sections.  We have to
2214    change the definition to something the rest of the link can
2215    understand.  */
2216
2217 static bfd_boolean
2218 elf_cris_adjust_dynamic_symbol (info, h)
2219      struct bfd_link_info *info;
2220      struct elf_link_hash_entry *h;
2221 {
2222   bfd *dynobj;
2223   asection *s;
2224   unsigned int power_of_two;
2225   bfd_size_type plt_entry_size;
2226
2227   dynobj = elf_hash_table (info)->dynobj;
2228
2229   /* Make sure we know what is going on here.  */
2230   BFD_ASSERT (dynobj != NULL
2231               && (h->needs_plt
2232                   || h->u.weakdef != NULL
2233                   || (h->def_dynamic
2234                       && h->ref_regular
2235                       && !h->def_regular)));
2236
2237   plt_entry_size
2238     = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2239        ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2240
2241   /* If this is a function, put it in the procedure linkage table.  We
2242      will fill in the contents of the procedure linkage table later,
2243      when we know the address of the .got section.  */
2244   if (h->type == STT_FUNC
2245       || h->needs_plt)
2246     {
2247       /* If we link a program (not a DSO), we'll get rid of unnecessary
2248          PLT entries; we point to the actual symbols -- even for pic
2249          relocs, because a program built with -fpic should have the same
2250          result as one built without -fpic, specifically considering weak
2251          symbols.
2252          FIXME: m68k and i386 differ here, for unclear reasons.  */
2253       if (! info->shared
2254           && !h->def_dynamic)
2255         {
2256           /* This case can occur if we saw a PLT reloc in an input file,
2257              but the symbol was not defined by a dynamic object.  In such
2258              a case, we don't actually need to build a procedure linkage
2259              table, and we can just do an absolute or PC reloc instead, or
2260              change a .got.plt index to a .got index for GOTPLT relocs.  */
2261           BFD_ASSERT (h->needs_plt);
2262           h->needs_plt = 0;
2263           h->plt.offset = (bfd_vma) -1;
2264           return
2265             elf_cris_adjust_gotplt_to_got ((struct
2266                                             elf_cris_link_hash_entry *) h,
2267                                            info);
2268         }
2269
2270       /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2271          where a pointer-equivalent symbol was unimportant (i.e. more
2272          like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2273          of the PLT.  We can't for the executable, because the GOT
2274          entries will point to the PLT there (and be constant).  */
2275       if (info->shared
2276           && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2277                                             h, info))
2278         return FALSE;
2279
2280       /* GC or folding may have rendered this entry unused.  */
2281       if (h->plt.refcount <= 0)
2282         {
2283           h->needs_plt = 0;
2284           h->plt.offset = (bfd_vma) -1;
2285           return TRUE;
2286         }
2287
2288       /* Make sure this symbol is output as a dynamic symbol.  */
2289       if (h->dynindx == -1)
2290         {
2291           if (! bfd_elf_link_record_dynamic_symbol (info, h))
2292             return FALSE;
2293         }
2294
2295       s = bfd_get_section_by_name (dynobj, ".plt");
2296       BFD_ASSERT (s != NULL);
2297
2298       /* If this is the first .plt entry, make room for the special
2299          first entry.  */
2300       if (s->size == 0)
2301         s->size += plt_entry_size;
2302
2303       /* If this symbol is not defined in a regular file, and we are
2304          not generating a shared library, then set the symbol to this
2305          location in the .plt.  */
2306       if (!info->shared
2307           && !h->def_regular)
2308         {
2309           h->root.u.def.section = s;
2310           h->root.u.def.value = s->size;
2311         }
2312
2313       /* If there's already a GOT entry, use that, not a .got.plt.  A
2314          GOT field still has a reference count when we get here; it's
2315          not yet changed to an offset.  We can't do this for an
2316          executable, because then the reloc associated with the PLT
2317          would get a non-PLT reloc pointing to the PLT.  FIXME: Move
2318          this to elf_cris_try_fold_plt_to_got.  */
2319       if (info->shared && h->got.refcount > 0)
2320         {
2321           h->got.refcount += h->plt.refcount;
2322
2323           /* Mark the PLT offset to use the GOT entry by setting the low
2324              bit in the plt offset; it is always a multiple of
2325              plt_entry_size (which is at least a multiple of 2).  */
2326           BFD_ASSERT ((s->size % plt_entry_size) == 0);
2327
2328           /* Change the PLT refcount to an offset.  */
2329           h->plt.offset = s->size;
2330
2331           /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2332              that the got entry should be used instead.  */
2333           BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2334                        h)->gotplt_offset == 0);
2335
2336           /* Make room for this entry.  */
2337           s->size += plt_entry_size;
2338
2339           return TRUE;
2340         }
2341
2342       /* No GOT reference for this symbol; prepare for an ordinary PLT.  */
2343       h->plt.offset = s->size;
2344
2345       /* Make room for this entry.  */
2346       s->size += plt_entry_size;
2347
2348       /* We also need to make an entry in the .got.plt section, which
2349          will be placed in the .got section by the linker script.  */
2350       ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
2351         = elf_cris_hash_table (info)->next_gotplt_entry;
2352       elf_cris_hash_table (info)->next_gotplt_entry += 4;
2353
2354       s = bfd_get_section_by_name (dynobj, ".got.plt");
2355       BFD_ASSERT (s != NULL);
2356       s->size += 4;
2357
2358       /* We also need to make an entry in the .rela.plt section.  */
2359
2360       s = bfd_get_section_by_name (dynobj, ".rela.plt");
2361       BFD_ASSERT (s != NULL);
2362       s->size += sizeof (Elf32_External_Rela);
2363
2364       return TRUE;
2365     }
2366
2367   /* Reinitialize the plt offset now that it is not used as a reference
2368      count any more.  */
2369   h->plt.offset = (bfd_vma) -1;
2370
2371   /* If this is a weak symbol, and there is a real definition, the
2372      processor independent code will have arranged for us to see the
2373      real definition first, and we can just use the same value.  */
2374   if (h->u.weakdef != NULL)
2375     {
2376       BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2377                   || h->u.weakdef->root.type == bfd_link_hash_defweak);
2378       h->root.u.def.section = h->u.weakdef->root.u.def.section;
2379       h->root.u.def.value = h->u.weakdef->root.u.def.value;
2380       return TRUE;
2381     }
2382
2383   /* This is a reference to a symbol defined by a dynamic object which
2384      is not a function.  */
2385
2386   /* If we are creating a shared library, we must presume that the
2387      only references to the symbol are via the global offset table.
2388      For such cases we need not do anything here; the relocations will
2389      be handled correctly by relocate_section.  */
2390   if (info->shared)
2391     return TRUE;
2392
2393   /* If there are no references to this symbol that do not use the
2394      GOT, we don't need to generate a copy reloc.  */
2395   if (!h->non_got_ref)
2396     return TRUE;
2397
2398   if (h->size == 0)
2399     {
2400       (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
2401                              h->root.root.string);
2402       return TRUE;
2403     }
2404
2405   /* We must allocate the symbol in our .dynbss section, which will
2406      become part of the .bss section of the executable.  There will be
2407      an entry for this symbol in the .dynsym section.  The dynamic
2408      object will contain position independent code, so all references
2409      from the dynamic object to this symbol will go through the global
2410      offset table.  The dynamic linker will use the .dynsym entry to
2411      determine the address it must put in the global offset table, so
2412      both the dynamic object and the regular object will refer to the
2413      same memory location for the variable.  */
2414
2415   s = bfd_get_section_by_name (dynobj, ".dynbss");
2416   BFD_ASSERT (s != NULL);
2417
2418   /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
2419      copy the initial value out of the dynamic object and into the
2420      runtime process image.  We need to remember the offset into the
2421      .rela.bss section we are going to use.  */
2422   if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2423     {
2424       asection *srel;
2425
2426       srel = bfd_get_section_by_name (dynobj, ".rela.bss");
2427       BFD_ASSERT (srel != NULL);
2428       srel->size += sizeof (Elf32_External_Rela);
2429       h->needs_copy = 1;
2430     }
2431
2432   /* Historic precedent: m68k and i386 allow max 8-byte alignment for the
2433      thing to copy; so do we.  */
2434
2435   /* We need to figure out the alignment required for this symbol.  I
2436      have no idea how ELF linkers handle this.  */
2437   power_of_two = bfd_log2 (h->size);
2438   if (power_of_two > 3)
2439     power_of_two = 3;
2440
2441   /* Apply the required alignment.  */
2442   s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
2443   if (power_of_two > bfd_get_section_alignment (dynobj, s))
2444     {
2445       if (!bfd_set_section_alignment (dynobj, s, power_of_two))
2446         return FALSE;
2447     }
2448
2449   /* Define the symbol as being at this point in the section.  */
2450   h->root.u.def.section = s;
2451   h->root.u.def.value = s->size;
2452
2453   /* Increment the section size to make room for the symbol.  */
2454   s->size += h->size;
2455
2456   return TRUE;
2457 }
2458
2459 /* Look through the relocs for a section during the first phase.  */
2460
2461 static bfd_boolean
2462 cris_elf_check_relocs (abfd, info, sec, relocs)
2463      bfd *abfd;
2464      struct bfd_link_info *info;
2465      asection *sec;
2466      const Elf_Internal_Rela *relocs;
2467 {
2468   bfd *dynobj;
2469   Elf_Internal_Shdr *symtab_hdr;
2470   struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
2471   bfd_signed_vma *local_got_refcounts;
2472   const Elf_Internal_Rela *rel;
2473   const Elf_Internal_Rela *rel_end;
2474   asection *sgot;
2475   asection *srelgot;
2476   asection *sreloc;
2477
2478   if (info->relocatable)
2479     return TRUE;
2480
2481   dynobj = elf_hash_table (info)->dynobj;
2482   symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2483   sym_hashes = elf_sym_hashes (abfd);
2484   sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
2485   local_got_refcounts = elf_local_got_refcounts (abfd);
2486
2487   sgot = NULL;
2488   srelgot = NULL;
2489   sreloc = NULL;
2490
2491   if (!elf_bad_symtab (abfd))
2492     sym_hashes_end -= symtab_hdr->sh_info;
2493
2494   rel_end = relocs + sec->reloc_count;
2495   for (rel = relocs; rel < rel_end; rel++)
2496     {
2497       struct elf_link_hash_entry *h;
2498       unsigned long r_symndx;
2499       enum elf_cris_reloc_type r_type;
2500
2501       r_symndx = ELF32_R_SYM (rel->r_info);
2502       if (r_symndx < symtab_hdr->sh_info)
2503         h = NULL;
2504       else
2505         {
2506           h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2507           while (h->root.type == bfd_link_hash_indirect
2508                  || h->root.type == bfd_link_hash_warning)
2509             h = (struct elf_link_hash_entry *) h->root.u.i.link;
2510         }
2511
2512       r_type = ELF32_R_TYPE (rel->r_info);
2513
2514       /* Some relocs require linker-created sections; we need to hang them
2515          on the first input bfd we found that contained dynamic relocs.  */
2516       switch (r_type)
2517         {
2518         case R_CRIS_16_GOT:
2519         case R_CRIS_32_GOT:
2520         case R_CRIS_32_GOTREL:
2521         case R_CRIS_32_PLT_GOTREL:
2522         case R_CRIS_32_PLT_PCREL:
2523         case R_CRIS_16_GOTPLT:
2524         case R_CRIS_32_GOTPLT:
2525           if (dynobj == NULL)
2526             {
2527               elf_hash_table (info)->dynobj = dynobj = abfd;
2528
2529               /* We could handle this if we can get a handle on the
2530                  output bfd in elf_cris_adjust_dynamic_symbol.  Failing
2531                  that, we must insist on dynobj being a specific mach.  */
2532               if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
2533                 {
2534                   (*_bfd_error_handler)
2535                     (_("%B, section %A:\n  v10/v32 compatible object %s"
2536                        " must not contain a PIC relocation"),
2537                      abfd, sec);
2538                   return FALSE;
2539                 }
2540
2541               /* Create the .got section, so we can assume it's always
2542                  present whenever there's a dynobj.  */
2543               if (!_bfd_elf_create_got_section (dynobj, info))
2544                 return FALSE;
2545             }
2546           break;
2547
2548         default:
2549           break;
2550         }
2551
2552       /* Some relocs require a global offset table (but perhaps not a
2553          specific GOT entry).  */
2554       switch (r_type)
2555         {
2556           /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT
2557              entry only for local symbols.  Unfortunately, we don't know
2558              until later on if there's a version script that forces the
2559              symbol local.  We must have the .rela.got section in place
2560              before we know if the symbol looks global now, so we need
2561              to treat the reloc just like for R_CRIS_16_GOT and
2562              R_CRIS_32_GOT.  */
2563         case R_CRIS_16_GOTPLT:
2564         case R_CRIS_32_GOTPLT:
2565         case R_CRIS_16_GOT:
2566         case R_CRIS_32_GOT:
2567           if (srelgot == NULL
2568               && (h != NULL || info->shared))
2569             {
2570               srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2571               if (srelgot == NULL)
2572                 {
2573                   srelgot = bfd_make_section_with_flags (dynobj,
2574                                                          ".rela.got",
2575                                                          (SEC_ALLOC
2576                                                           | SEC_LOAD
2577                                                           | SEC_HAS_CONTENTS
2578                                                           | SEC_IN_MEMORY
2579                                                           | SEC_LINKER_CREATED
2580                                                           | SEC_READONLY));
2581                   if (srelgot == NULL
2582                       || !bfd_set_section_alignment (dynobj, srelgot, 2))
2583                     return FALSE;
2584                 }
2585             }
2586           /* Fall through.  */
2587
2588         case R_CRIS_32_GOTREL:
2589         case R_CRIS_32_PLT_GOTREL:
2590           if (sgot == NULL)
2591             sgot = bfd_get_section_by_name (dynobj, ".got");
2592
2593           if (local_got_refcounts == NULL)
2594             {
2595               bfd_size_type amt;
2596
2597               /* We use index local_got_refcounts[-1] to count all
2598                  GOT-relative relocations that do not have explicit
2599                  GOT entries.  */
2600               amt = symtab_hdr->sh_info + 1;
2601               amt *= sizeof (bfd_signed_vma);
2602               local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
2603               if (local_got_refcounts == NULL)
2604                 return FALSE;
2605
2606               local_got_refcounts++;
2607               elf_local_got_refcounts (abfd) = local_got_refcounts;
2608             }
2609           break;
2610
2611         default:
2612           break;
2613         }
2614
2615       switch (r_type)
2616         {
2617         case R_CRIS_16_GOTPLT:
2618         case R_CRIS_32_GOTPLT:
2619           /* Mark that we need a GOT entry if the PLT entry (and its GOT
2620              entry) is eliminated.  We can only do this for a non-local
2621              symbol.  */
2622           if (h != NULL)
2623             {
2624               ((struct elf_cris_link_hash_entry *) h)->gotplt_refcount++;
2625               goto handle_gotplt_reloc;
2626             }
2627           /* If h is NULL then this is a local symbol, and we must make a
2628              GOT entry for it, so handle it like a GOT reloc.  */
2629           /* Fall through.  */
2630
2631         case R_CRIS_16_GOT:
2632         case R_CRIS_32_GOT:
2633           /* This symbol requires a global offset table entry.  */
2634           if (h != NULL)
2635             {
2636               if (h->got.refcount == 0)
2637                 {
2638                   /* Make sure this symbol is output as a dynamic symbol.  */
2639                   if (h->dynindx == -1)
2640                     {
2641                       if (!bfd_elf_link_record_dynamic_symbol (info, h))
2642                         return FALSE;
2643                     }
2644
2645                   /* Allocate space in the .got section.  */
2646                   sgot->size += 4;
2647                   /* Allocate relocation space.  */
2648                   srelgot->size += sizeof (Elf32_External_Rela);
2649                 }
2650               h->got.refcount++;
2651             }
2652           else
2653             {
2654               /* This is a global offset table entry for a local symbol.  */
2655               if (local_got_refcounts[r_symndx] == 0)
2656                 {
2657                   sgot->size += 4;
2658                   if (info->shared)
2659                     {
2660                       /* If we are generating a shared object, we need to
2661                          output a R_CRIS_RELATIVE reloc so that the dynamic
2662                          linker can adjust this GOT entry.  */
2663                       srelgot->size += sizeof (Elf32_External_Rela);
2664                     }
2665                 }
2666               local_got_refcounts[r_symndx]++;
2667             }
2668           break;
2669
2670         case R_CRIS_32_GOTREL:
2671           /* This reference requires a global offset table.
2672              FIXME: The actual refcount isn't used currently; the .got
2673              section can't be removed if there were any references in the
2674              input.  */
2675           local_got_refcounts[-1]++;
2676           break;
2677
2678         handle_gotplt_reloc:
2679
2680         case R_CRIS_32_PLT_GOTREL:
2681           /* This reference requires a global offset table.  */
2682           local_got_refcounts[-1]++;
2683           /* Fall through.  */
2684
2685         case R_CRIS_32_PLT_PCREL:
2686           /* This symbol requires a procedure linkage table entry.  We
2687              actually build the entry in adjust_dynamic_symbol,
2688              because this might be a case of linking PIC code which is
2689              never referenced by a dynamic object, in which case we
2690              don't need to generate a procedure linkage table entry
2691              after all.  */
2692
2693           /* Beware: if we'd check for visibility of the symbol here
2694              (and not marking the need for a PLT when non-visible), we'd
2695              get into trouble with keeping handling consistent with
2696              regards to relocs found before definition and GOTPLT
2697              handling.  Eliminable PLT entries will be dealt with later
2698              anyway.  */
2699           if (h == NULL)
2700             continue;
2701
2702           h->needs_plt = 1;
2703           h->plt.refcount++;
2704           break;
2705
2706         case R_CRIS_8:
2707         case R_CRIS_16:
2708         case R_CRIS_32:
2709           /* Let's help debug shared library creation.  Any of these
2710              relocs can be used in shared libs, but pages containing them
2711              cannot be shared.  Don't warn for sections we don't care
2712              about, such as debug sections or non-constant sections.  We
2713              can't help tables of (global) function pointers, for example,
2714              though they must be emitted in a data section to avoid having
2715              impure text sections.  */
2716           if (info->shared
2717               && (sec->flags & SEC_ALLOC) != 0
2718               && (sec->flags & SEC_READONLY) != 0)
2719             {
2720               /* FIXME: How do we make this optionally a warning only?  */
2721               (*_bfd_error_handler)
2722                 (_("%B, section %A:\n  relocation %s should not"
2723                    " be used in a shared object; recompile with -fPIC"),
2724                  abfd,
2725                  sec,
2726                  cris_elf_howto_table[r_type].name);
2727             }
2728           /* Fall through.  */
2729
2730         case R_CRIS_8_PCREL:
2731         case R_CRIS_16_PCREL:
2732         case R_CRIS_32_PCREL:
2733           if (h != NULL)
2734             {
2735               h->non_got_ref = 1;
2736
2737               /* Make sure a plt entry is created for this symbol if it
2738                  turns out to be a function defined by a dynamic object.  */
2739               if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2740                 h->plt.refcount++;
2741             }
2742
2743           /* If we are creating a shared library and this is not a local
2744              symbol, we need to copy the reloc into the shared library.
2745              However when linking with -Bsymbolic and this is a global
2746              symbol which is defined in an object we are including in the
2747              link (i.e., DEF_REGULAR is set), then we can resolve the
2748              reloc directly.  At this point we have not seen all the input
2749              files, so it is possible that DEF_REGULAR is not set now but
2750              will be set later (it is never cleared).  In case of a weak
2751              definition, DEF_REGULAR may be cleared later by a strong
2752              definition in a shared library.  We account for that
2753              possibility below by storing information in the relocs_copied
2754              field of the hash table entry.  A similar situation occurs
2755              when creating shared libraries and symbol visibility changes
2756              render the symbol local.  */
2757
2758           /* No need to do anything if we're not creating a shared object.  */
2759           if (! info->shared)
2760             break;
2761
2762           /* We don't need to handle relocs into sections not going into
2763              the "real" output.  */
2764           if ((sec->flags & SEC_ALLOC) == 0)
2765             break;
2766
2767           /* We can only eliminate PC-relative relocs.  */
2768           if (r_type == R_CRIS_8_PCREL
2769               || r_type == R_CRIS_16_PCREL
2770               || r_type == R_CRIS_32_PCREL)
2771             {
2772               /* If the symbol is local, then we can eliminate the reloc.  */
2773               if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2774                 break;
2775
2776               /* If this is with -Bsymbolic and the symbol isn't weak, and
2777                  is defined by an ordinary object (the ones we include in
2778                  this shared library) then we can also eliminate the
2779                  reloc.  See comment above for more eliminable cases which
2780                  we can't identify at this time.  */
2781               if (info->symbolic
2782                   && h->root.type != bfd_link_hash_defweak
2783                   && h->def_regular)
2784                 break;
2785
2786               if ((sec->flags & SEC_READONLY) != 0)
2787                 {
2788                   /* FIXME: How do we make this optionally a warning only?  */
2789                   (*_bfd_error_handler)
2790                     (_("%B, section %A:\n  relocation %s should not be used"
2791                        " in a shared object; recompile with -fPIC"),
2792                      abfd,
2793                      sec,
2794                      cris_elf_howto_table[r_type].name);
2795                 }
2796             }
2797
2798           /* We create a reloc section in dynobj and make room for this
2799              reloc.  */
2800           if (sreloc == NULL)
2801             {
2802               const char *name;
2803
2804               name = (bfd_elf_string_from_elf_section
2805                       (abfd,
2806                        elf_elfheader (abfd)->e_shstrndx,
2807                        elf_section_data (sec)->rel_hdr.sh_name));
2808               if (name == NULL)
2809                 return FALSE;
2810
2811               BFD_ASSERT (CONST_STRNEQ (name, ".rela")
2812                           && strcmp (bfd_get_section_name (abfd, sec),
2813                                      name + 5) == 0);
2814
2815               sreloc = bfd_get_section_by_name (dynobj, name);
2816               if (sreloc == NULL)
2817                 {
2818                   sreloc = bfd_make_section_with_flags (dynobj, name,
2819                                                         (SEC_ALLOC
2820                                                          | SEC_LOAD
2821                                                          | SEC_HAS_CONTENTS
2822                                                          | SEC_IN_MEMORY
2823                                                          | SEC_LINKER_CREATED
2824                                                          | SEC_READONLY));
2825                   if (sreloc == NULL
2826                       || !bfd_set_section_alignment (dynobj, sreloc, 2))
2827                     return FALSE;
2828                 }
2829               if (sec->flags & SEC_READONLY)
2830                 info->flags |= DF_TEXTREL;
2831             }
2832
2833           sreloc->size += sizeof (Elf32_External_Rela);
2834
2835           /* If we are linking with -Bsymbolic, we count the number of PC
2836              relative relocations we have entered for this symbol, so that
2837              we can discard them again if the symbol is later defined by a
2838              regular object.  We know that h is really a pointer to an
2839              elf_cris_link_hash_entry.  */
2840           if ((r_type == R_CRIS_8_PCREL
2841                || r_type == R_CRIS_16_PCREL
2842                || r_type == R_CRIS_32_PCREL)
2843               && info->symbolic)
2844             {
2845               struct elf_cris_link_hash_entry *eh;
2846               struct elf_cris_pcrel_relocs_copied *p;
2847
2848               eh = (struct elf_cris_link_hash_entry *) h;
2849
2850               for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
2851                 if (p->section == sreloc)
2852                   break;
2853
2854               if (p == NULL)
2855                 {
2856                   p = ((struct elf_cris_pcrel_relocs_copied *)
2857                        bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
2858                   if (p == NULL)
2859                     return FALSE;
2860                   p->next = eh->pcrel_relocs_copied;
2861                   eh->pcrel_relocs_copied = p;
2862                   p->section = sreloc;
2863                   p->count = 0;
2864                 }
2865
2866               ++p->count;
2867             }
2868           break;
2869
2870         /* This relocation describes the C++ object vtable hierarchy.
2871            Reconstruct it for later use during GC.  */
2872         case R_CRIS_GNU_VTINHERIT:
2873           if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2874             return FALSE;
2875           break;
2876
2877         /* This relocation describes which C++ vtable entries are actually
2878            used.  Record for later use during GC.  */
2879         case R_CRIS_GNU_VTENTRY:
2880           if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2881             return FALSE;
2882           break;
2883
2884         default:
2885           /* Other relocs do not appear here.  */
2886           bfd_set_error (bfd_error_bad_value);
2887           return FALSE;
2888         }
2889     }
2890
2891   return TRUE;
2892 }
2893
2894 /* Set the sizes of the dynamic sections.  */
2895
2896 static bfd_boolean
2897 elf_cris_size_dynamic_sections (output_bfd, info)
2898      bfd *output_bfd ATTRIBUTE_UNUSED;
2899      struct bfd_link_info *info;
2900 {
2901   bfd *dynobj;
2902   asection *s;
2903   bfd_boolean plt;
2904   bfd_boolean relocs;
2905
2906   dynobj = elf_hash_table (info)->dynobj;
2907   BFD_ASSERT (dynobj != NULL);
2908
2909   if (elf_hash_table (info)->dynamic_sections_created)
2910     {
2911       /* Set the contents of the .interp section to the interpreter.  */
2912       if (info->executable)
2913         {
2914           s = bfd_get_section_by_name (dynobj, ".interp");
2915           BFD_ASSERT (s != NULL);
2916           s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2917           s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2918         }
2919     }
2920   else
2921     {
2922       /* Adjust all expected GOTPLT uses to use a GOT entry instead.  */
2923       elf_cris_link_hash_traverse (elf_cris_hash_table (info),
2924                                    elf_cris_adjust_gotplt_to_got,
2925                                    (PTR) info);
2926
2927       /* We may have created entries in the .rela.got section.
2928          However, if we are not creating the dynamic sections, we will
2929          not actually use these entries.  Reset the size of .rela.got,
2930          which will cause it to get stripped from the output file
2931          below.  */
2932       s = bfd_get_section_by_name (dynobj, ".rela.got");
2933       if (s != NULL)
2934         s->size = 0;
2935     }
2936
2937   /* If this is a -Bsymbolic shared link, then we need to discard all PC
2938      relative relocs against symbols defined in a regular object.  We
2939      allocated space for them in the check_relocs routine, but we will not
2940      fill them in in the relocate_section routine.  We also discard space
2941      for relocs that have become for local symbols due to symbol
2942      visibility changes.  For programs, we discard space for relocs for
2943      symbols not referenced by any dynamic object.  */
2944   if (info->shared)
2945     elf_cris_link_hash_traverse (elf_cris_hash_table (info),
2946                                  elf_cris_discard_excess_dso_dynamics,
2947                                  (PTR) info);
2948   else
2949     elf_cris_link_hash_traverse (elf_cris_hash_table (info),
2950                                  elf_cris_discard_excess_program_dynamics,
2951                                  (PTR) info);
2952
2953   /* The check_relocs and adjust_dynamic_symbol entry points have
2954      determined the sizes of the various dynamic sections.  Allocate
2955      memory for them.  */
2956   plt = FALSE;
2957   relocs = FALSE;
2958   for (s = dynobj->sections; s != NULL; s = s->next)
2959     {
2960       const char *name;
2961
2962       if ((s->flags & SEC_LINKER_CREATED) == 0)
2963         continue;
2964
2965       /* It's OK to base decisions on the section name, because none
2966          of the dynobj section names depend upon the input files.  */
2967       name = bfd_get_section_name (dynobj, s);
2968
2969       if (strcmp (name, ".plt") == 0)
2970         {
2971           /* Remember whether there is a PLT.  */
2972           plt = s->size != 0;
2973         }
2974       else if (CONST_STRNEQ (name, ".rela"))
2975         {
2976           if (s->size != 0)
2977             {
2978               /* Remember whether there are any reloc sections other
2979                  than .rela.plt.  */
2980               if (strcmp (name, ".rela.plt") != 0)
2981                   relocs = TRUE;
2982
2983               /* We use the reloc_count field as a counter if we need
2984                  to copy relocs into the output file.  */
2985               s->reloc_count = 0;
2986             }
2987         }
2988       else if (! CONST_STRNEQ (name, ".got")
2989                && strcmp (name, ".dynbss") != 0)
2990         {
2991           /* It's not one of our sections, so don't allocate space.  */
2992           continue;
2993         }
2994
2995       if (s->size == 0)
2996         {
2997           /* If we don't need this section, strip it from the
2998              output file.  This is mostly to handle .rela.bss and
2999              .rela.plt.  We must create both sections in
3000              create_dynamic_sections, because they must be created
3001              before the linker maps input sections to output
3002              sections.  The linker does that before
3003              adjust_dynamic_symbol is called, and it is that
3004              function which decides whether anything needs to go
3005              into these sections.  */
3006           s->flags |= SEC_EXCLUDE;
3007           continue;
3008         }
3009
3010       if ((s->flags & SEC_HAS_CONTENTS) == 0)
3011         continue;
3012
3013       /* Allocate memory for the section contents. We use bfd_zalloc here
3014          in case unused entries are not reclaimed before the section's
3015          contents are written out.  This should not happen, but this way
3016          if it does, we will not write out garbage.  For reloc sections,
3017          this will make entries have the type R_CRIS_NONE.  */
3018       s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3019       if (s->contents == NULL)
3020         return FALSE;
3021     }
3022
3023   if (elf_hash_table (info)->dynamic_sections_created)
3024     {
3025       /* Add some entries to the .dynamic section.  We fill in the
3026          values later, in elf_cris_finish_dynamic_sections, but we
3027          must add the entries now so that we get the correct size for
3028          the .dynamic section.  The DT_DEBUG entry is filled in by the
3029          dynamic linker and used by the debugger.  */
3030 #define add_dynamic_entry(TAG, VAL) \
3031   _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3032
3033       if (!info->shared)
3034         {
3035           if (!add_dynamic_entry (DT_DEBUG, 0))
3036             return FALSE;
3037         }
3038
3039       if (plt)
3040         {
3041           if (!add_dynamic_entry (DT_PLTGOT, 0)
3042               || !add_dynamic_entry (DT_PLTRELSZ, 0)
3043               || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3044               || !add_dynamic_entry (DT_JMPREL, 0))
3045             return FALSE;
3046         }
3047
3048       if (relocs)
3049         {
3050           if (!add_dynamic_entry (DT_RELA, 0)
3051               || !add_dynamic_entry (DT_RELASZ, 0)
3052               || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3053             return FALSE;
3054         }
3055
3056       if ((info->flags & DF_TEXTREL) != 0)
3057         {
3058           if (!add_dynamic_entry (DT_TEXTREL, 0))
3059             return FALSE;
3060           info->flags |= DF_TEXTREL;
3061         }
3062     }
3063 #undef add_dynamic_entry
3064
3065   return TRUE;
3066 }
3067
3068 /* This function is called via elf_cris_link_hash_traverse if we are
3069    creating a shared object.  In the -Bsymbolic case, it discards the
3070    space allocated to copy PC relative relocs against symbols which
3071    are defined in regular objects.  For the normal non-symbolic case,
3072    we also discard space for relocs that have become local due to
3073    symbol visibility changes.  We allocated space for them in the
3074    check_relocs routine, but we won't fill them in in the
3075    relocate_section routine.  */
3076
3077 static bfd_boolean
3078 elf_cris_discard_excess_dso_dynamics (h, inf)
3079      struct elf_cris_link_hash_entry *h;
3080      PTR inf;
3081 {
3082   struct elf_cris_pcrel_relocs_copied *s;
3083   struct bfd_link_info *info = (struct bfd_link_info *) inf;
3084
3085   if (h->root.root.type == bfd_link_hash_warning)
3086     h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3087
3088   /* If a symbol has been forced local or we have found a regular
3089      definition for the symbolic link case, then we won't be needing
3090      any relocs.  */
3091   if (h->root.def_regular
3092       && (h->root.forced_local
3093           || info->symbolic))
3094     {
3095       for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3096         s->section->size -= s->count * sizeof (Elf32_External_Rela);
3097     }
3098
3099   return TRUE;
3100 }
3101
3102 /* This function is called via elf_cris_link_hash_traverse if we are *not*
3103    creating a shared object.  We discard space for relocs for symbols put
3104    in the .got, but which we found we do not have to resolve at run-time.  */
3105
3106 static bfd_boolean
3107 elf_cris_discard_excess_program_dynamics (h, inf)
3108      struct elf_cris_link_hash_entry *h;
3109      PTR inf;
3110 {
3111   struct bfd_link_info *info = (struct bfd_link_info *) inf;
3112
3113   if (h->root.root.type == bfd_link_hash_warning)
3114     h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3115
3116   /* If we're not creating a shared library and have a symbol which is
3117      referred to by .got references, but the symbol is defined locally,
3118      (or rather, not defined by a DSO) then lose the reloc for the .got
3119      (don't allocate room for it).  Likewise for relocs for something
3120      for which we create a PLT.  */
3121   if (!h->root.def_dynamic
3122       || h->root.plt.refcount > 0)
3123     {
3124       if (h->root.got.refcount > 0
3125           /* The size of this section is only valid and in sync with the
3126              various reference counts if we do dynamic; don't decrement it
3127              otherwise.  */
3128           && elf_hash_table (info)->dynamic_sections_created)
3129         {
3130           bfd *dynobj = elf_hash_table (info)->dynobj;
3131           asection *srelgot;
3132
3133           BFD_ASSERT (dynobj != NULL);
3134
3135           srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3136
3137           BFD_ASSERT (srelgot != NULL);
3138
3139           srelgot->size -= sizeof (Elf32_External_Rela);
3140         }
3141
3142       /* If the locally-defined symbol isn't used by a DSO, then we don't
3143          have to export it as a dynamic symbol.  This was already done for
3144          functions; doing this for all symbols would presumably not
3145          introduce new problems.  Of course we don't do this if we're
3146          exporting all dynamic symbols.  */
3147       if (! info->export_dynamic
3148           && h->root.dynindx != -1
3149           && !h->root.def_dynamic
3150           && !h->root.ref_dynamic)
3151         {
3152           h->root.dynindx = -1;
3153           _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3154                                   h->root.dynstr_index);
3155         }
3156     }
3157
3158   return TRUE;
3159 }
3160
3161 /* Reject a file depending on presence and expectation of prefixed
3162    underscores on symbols.  */
3163
3164 static bfd_boolean
3165 cris_elf_object_p (abfd)
3166      bfd *abfd;
3167 {
3168   if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
3169     return FALSE;
3170
3171   if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
3172     return (bfd_get_symbol_leading_char (abfd) == '_');
3173   else
3174     return (bfd_get_symbol_leading_char (abfd) == 0);
3175 }
3176
3177 /* Mark presence or absence of leading underscore.  Set machine type
3178    flags from mach type.  */
3179
3180 static void
3181 cris_elf_final_write_processing (abfd, linker)
3182      bfd *abfd;
3183      bfd_boolean linker ATTRIBUTE_UNUSED;
3184 {
3185   unsigned long e_flags = elf_elfheader (abfd)->e_flags;
3186
3187   e_flags &= ~EF_CRIS_UNDERSCORE;
3188   if (bfd_get_symbol_leading_char (abfd) == '_')
3189     e_flags |= EF_CRIS_UNDERSCORE;
3190
3191   switch (bfd_get_mach (abfd))
3192     {
3193     case bfd_mach_cris_v0_v10:
3194       e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
3195       break;
3196
3197     case bfd_mach_cris_v10_v32:
3198       e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
3199       break;
3200
3201     case bfd_mach_cris_v32:
3202       e_flags |= EF_CRIS_VARIANT_V32;
3203       break;
3204
3205     default:
3206       _bfd_abort (__FILE__, __LINE__,
3207                   _("Unexpected machine number"));
3208     }
3209
3210   elf_elfheader (abfd)->e_flags = e_flags;
3211 }
3212
3213 /* Set the mach type from e_flags value.  */
3214
3215 static bfd_boolean
3216 cris_elf_set_mach_from_flags (abfd, flags)
3217      bfd *abfd;
3218      unsigned long flags;
3219 {
3220   switch (flags & EF_CRIS_VARIANT_MASK)
3221     {
3222     case EF_CRIS_VARIANT_ANY_V0_V10:
3223       bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
3224       break;
3225
3226     case EF_CRIS_VARIANT_V32:
3227       bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
3228       break;
3229
3230     case EF_CRIS_VARIANT_COMMON_V10_V32:
3231       bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
3232       break;
3233
3234     default:
3235       /* Since we don't recognize them, we obviously can't support them
3236          with this code; we'd have to require that all future handling
3237          would be optional.  */
3238       bfd_set_error (bfd_error_wrong_format);
3239       return FALSE;
3240     }
3241
3242   return TRUE;
3243 }
3244
3245 /* Display the flags field.  */
3246
3247 static bfd_boolean
3248 cris_elf_print_private_bfd_data (abfd, ptr)
3249      bfd *abfd;
3250      PTR ptr;
3251 {
3252   FILE *file = (FILE *) ptr;
3253
3254   BFD_ASSERT (abfd != NULL && ptr != NULL);
3255
3256   _bfd_elf_print_private_bfd_data (abfd, ptr);
3257
3258   fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
3259
3260   if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
3261     fprintf (file, _(" [symbols have a _ prefix]"));
3262   if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
3263       == EF_CRIS_VARIANT_COMMON_V10_V32)
3264     fprintf (file, _(" [v10 and v32]"));
3265   if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
3266       == EF_CRIS_VARIANT_V32)
3267     fprintf (file, _(" [v32]"));
3268
3269   fputc ('\n', file);
3270   return TRUE;
3271 }
3272
3273 /* Don't mix files with and without a leading underscore.  */
3274
3275 static bfd_boolean
3276 cris_elf_merge_private_bfd_data (ibfd, obfd)
3277      bfd *ibfd;
3278      bfd *obfd;
3279 {
3280   int imach, omach;
3281
3282   if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3283     return FALSE;
3284
3285   if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3286       || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3287     return TRUE;
3288
3289   imach = bfd_get_mach (ibfd);
3290
3291   if (! elf_flags_init (obfd))
3292     {
3293       /* This happens when ld starts out with a 'blank' output file.  */
3294       elf_flags_init (obfd) = TRUE;
3295
3296       /* We ignore the linker-set mach, and instead set it according to
3297          the first input file.  This would also happen if we could
3298          somehow filter out the OUTPUT_ARCH () setting from elf.sc.
3299          This allows us to keep the same linker config across
3300          cris(v0..v10) and crisv32.  The drawback is that we can't force
3301          the output type, which might be a sane thing to do for a
3302          v10+v32 compatibility object.  */
3303       if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
3304         return FALSE;
3305     }
3306
3307   if (bfd_get_symbol_leading_char (ibfd)
3308       != bfd_get_symbol_leading_char (obfd))
3309     {
3310       (*_bfd_error_handler)
3311         (bfd_get_symbol_leading_char (ibfd) == '_'
3312          ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
3313          : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
3314          ibfd);
3315       bfd_set_error (bfd_error_bad_value);
3316       return FALSE;
3317     }
3318
3319   omach = bfd_get_mach (obfd);
3320
3321   if (imach != omach)
3322     {
3323       /* We can get an incompatible combination only if either is
3324          bfd_mach_cris_v32, and the other one isn't compatible.  */
3325       if ((imach == bfd_mach_cris_v32
3326            && omach != bfd_mach_cris_v10_v32)
3327           || (omach == bfd_mach_cris_v32
3328               && imach != bfd_mach_cris_v10_v32))
3329         {
3330           (*_bfd_error_handler)
3331             ((imach == bfd_mach_cris_v32)
3332              ? _("%B contains CRIS v32 code, incompatible"
3333                  " with previous objects")
3334              : _("%B contains non-CRIS-v32 code, incompatible"
3335                  " with previous objects"),
3336              ibfd);
3337           bfd_set_error (bfd_error_bad_value);
3338           return FALSE;
3339         }
3340
3341       /* We don't have to check the case where the input is compatible
3342          with v10 and v32, because the output is already known to be set
3343          to the other (compatible) mach.  */
3344       if (omach == bfd_mach_cris_v10_v32
3345           && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
3346         return FALSE;
3347     }
3348
3349   return TRUE;
3350 }
3351
3352 /* Do side-effects of e_flags copying to obfd.  */
3353
3354 static bfd_boolean
3355 cris_elf_copy_private_bfd_data (ibfd, obfd)
3356      bfd *ibfd;
3357      bfd *obfd;
3358 {
3359   /* Call the base function.  */
3360   if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
3361     return FALSE;
3362
3363   /* If output is big-endian for some obscure reason, stop here.  */
3364   if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
3365     return FALSE;
3366
3367   if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3368       || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3369     return TRUE;
3370
3371   /* Do what we really came here for.  */
3372   return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
3373 }
3374
3375 static enum elf_reloc_type_class
3376 elf_cris_reloc_type_class (rela)
3377      const Elf_Internal_Rela *rela;
3378 {
3379   switch ((int) ELF32_R_TYPE (rela->r_info))
3380     {
3381     case R_CRIS_RELATIVE:
3382       return reloc_class_relative;
3383     case R_CRIS_JUMP_SLOT:
3384       return reloc_class_plt;
3385     case R_CRIS_COPY:
3386       return reloc_class_copy;
3387     default:
3388       return reloc_class_normal;
3389     }
3390 }
3391 \f
3392 #define ELF_ARCH                bfd_arch_cris
3393 #define ELF_MACHINE_CODE        EM_CRIS
3394 #define ELF_MAXPAGESIZE         0x2000
3395
3396 #define TARGET_LITTLE_SYM       bfd_elf32_cris_vec
3397 #define TARGET_LITTLE_NAME      "elf32-cris"
3398 #define elf_symbol_leading_char 0
3399
3400 #define elf_info_to_howto_rel                   NULL
3401 #define elf_info_to_howto                       cris_info_to_howto_rela
3402 #define elf_backend_relocate_section            cris_elf_relocate_section
3403 #define elf_backend_gc_mark_hook                cris_elf_gc_mark_hook
3404 #define elf_backend_gc_sweep_hook               cris_elf_gc_sweep_hook
3405 #define elf_backend_check_relocs                cris_elf_check_relocs
3406 #define elf_backend_grok_prstatus               cris_elf_grok_prstatus
3407 #define elf_backend_grok_psinfo                 cris_elf_grok_psinfo
3408
3409 #define elf_backend_can_gc_sections             1
3410 #define elf_backend_can_refcount                1
3411
3412 #define elf_backend_object_p                    cris_elf_object_p
3413 #define elf_backend_final_write_processing \
3414         cris_elf_final_write_processing
3415 #define bfd_elf32_bfd_print_private_bfd_data \
3416         cris_elf_print_private_bfd_data
3417 #define bfd_elf32_bfd_merge_private_bfd_data \
3418         cris_elf_merge_private_bfd_data
3419 #define bfd_elf32_bfd_copy_private_bfd_data \
3420         cris_elf_copy_private_bfd_data
3421
3422 #define bfd_elf32_bfd_reloc_type_lookup         cris_reloc_type_lookup
3423 #define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
3424
3425 #define bfd_elf32_bfd_link_hash_table_create \
3426         elf_cris_link_hash_table_create
3427 #define elf_backend_adjust_dynamic_symbol \
3428         elf_cris_adjust_dynamic_symbol
3429 #define elf_backend_size_dynamic_sections \
3430         elf_cris_size_dynamic_sections
3431 #define elf_backend_init_index_section          _bfd_elf_init_1_index_section
3432 #define elf_backend_finish_dynamic_symbol \
3433         elf_cris_finish_dynamic_symbol
3434 #define elf_backend_finish_dynamic_sections \
3435         elf_cris_finish_dynamic_sections
3436 #define elf_backend_create_dynamic_sections \
3437         _bfd_elf_create_dynamic_sections
3438 #define bfd_elf32_bfd_final_link \
3439         bfd_elf_gc_common_final_link
3440 #define elf_backend_hide_symbol                 elf_cris_hide_symbol
3441 #define elf_backend_reloc_type_class            elf_cris_reloc_type_class
3442
3443 #define elf_backend_want_got_plt        1
3444 #define elf_backend_plt_readonly        1
3445 #define elf_backend_want_plt_sym        0
3446 #define elf_backend_got_header_size     12
3447
3448 /* Later, we my want to optimize RELA entries into REL entries for dynamic
3449    linking and libraries (if it's a win of any significance).  Until then,
3450    take the easy route.  */
3451 #define elf_backend_may_use_rel_p 0
3452 #define elf_backend_may_use_rela_p 1
3453 #define elf_backend_rela_normal         1
3454
3455 #include "elf32-target.h"
3456
3457 #undef TARGET_LITTLE_SYM
3458 #undef TARGET_LITTLE_NAME
3459 #undef elf_symbol_leading_char
3460
3461 #define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
3462 #define TARGET_LITTLE_NAME "elf32-us-cris"
3463 #define elf_symbol_leading_char '_'
3464 #undef elf32_bed
3465 #define elf32_bed elf32_us_cris_bed
3466
3467 #include "elf32-target.h"