bfd/elf32-cris.c

   1 /* CRIS-specific support for 32-bit ELF.
   2    Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
   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 3 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,
  23    MA 02110-1301, USA.  */
  24
  25 #include "sysdep.h"
  26 #include "bfd.h"
  27 #include "libbfd.h"
  28 #include "elf-bfd.h"
  29 #include "elf/cris.h"
  30 #include <limits.h>
  31
  32 /* Forward declarations.  */
  33 static reloc_howto_type * cris_reloc_type_lookup
  34   PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
  35
  36 static void cris_info_to_howto_rela
  37   PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
  38
  39 static bfd_reloc_status_type cris_elf_pcrel_reloc
  40   PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
  41
  42 static bfd_boolean cris_elf_grok_prstatus
  43   PARAMS ((bfd *abfd, Elf_Internal_Note *note));
  44
  45 static bfd_boolean cris_elf_grok_psinfo
  46   PARAMS ((bfd *abfd, Elf_Internal_Note *note));
  47
  48 static bfd_boolean cris_elf_relocate_section
  49   PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
  50            Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
  51
  52 static bfd_reloc_status_type cris_final_link_relocate
  53   PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
  54            Elf_Internal_Rela *, bfd_vma));
  55
  56 static bfd_boolean cris_elf_object_p PARAMS ((bfd *));
  57
  58 static void cris_elf_final_write_processing PARAMS ((bfd *, bfd_boolean));
  59
  60 static bfd_boolean cris_elf_set_mach_from_flags
  61   PARAMS ((bfd *, unsigned long int));
  62
  63 static bfd_boolean cris_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
  64
  65 static bfd_boolean cris_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
  66 static bfd_boolean cris_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *));
  67
  68 struct elf_cris_link_hash_entry;
  69 static bfd_boolean elf_cris_discard_excess_dso_dynamics
  70   PARAMS ((struct elf_cris_link_hash_entry *, PTR));
  71 static bfd_boolean elf_cris_discard_excess_program_dynamics
  72   PARAMS ((struct elf_cris_link_hash_entry *, PTR));
  73 static bfd_boolean elf_cris_adjust_gotplt_to_got
  74   PARAMS ((struct elf_cris_link_hash_entry *, PTR));
  75 static bfd_boolean elf_cris_try_fold_plt_to_got
  76   PARAMS ((struct elf_cris_link_hash_entry *, PTR));
  77 static struct bfd_hash_entry *elf_cris_link_hash_newfunc
  78   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
  79 static struct bfd_link_hash_table *elf_cris_link_hash_table_create
  80   PARAMS ((bfd *));
  81 static bfd_boolean elf_cris_adjust_dynamic_symbol
  82   PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
  83 static bfd_boolean cris_elf_check_relocs
  84   PARAMS ((bfd *, struct bfd_link_info *, asection *,
  85            const Elf_Internal_Rela *));
  86
  87 static bfd_boolean elf_cris_size_dynamic_sections
  88   PARAMS ((bfd *, struct bfd_link_info *));
  89 static bfd_boolean elf_cris_finish_dynamic_symbol
  90   PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
  91            Elf_Internal_Sym *));
  92 static bfd_boolean elf_cris_finish_dynamic_sections
  93   PARAMS ((bfd *, struct bfd_link_info *));
  94 static void elf_cris_hide_symbol
  95   PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
  96 static enum elf_reloc_type_class elf_cris_reloc_type_class
  97   PARAMS ((const Elf_Internal_Rela *));
  98
  99 static reloc_howto_type cris_elf_howto_table [] =
 100 {
 101   /* This reloc does nothing.  */
 102   HOWTO (R_CRIS_NONE,           /* type */
 103          0,                     /* rightshift */
 104          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 105          32,                    /* bitsize */
 106          FALSE,                 /* pc_relative */
 107          0,                     /* bitpos */
 108          complain_overflow_bitfield, /* complain_on_overflow */
 109          bfd_elf_generic_reloc, /* special_function */
 110          "R_CRIS_NONE",         /* name */
 111          FALSE,                 /* partial_inplace */
 112          0,                     /* src_mask */
 113          0,                     /* dst_mask */
 114          FALSE),                /* pcrel_offset */
 115
 116   /* An 8 bit absolute relocation.  */
 117   HOWTO (R_CRIS_8,              /* type */
 118          0,                     /* rightshift */
 119          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 120          8,                     /* bitsize */
 121          FALSE,                 /* pc_relative */
 122          0,                     /* bitpos */
 123          complain_overflow_bitfield, /* complain_on_overflow */
 124          bfd_elf_generic_reloc, /* special_function */
 125          "R_CRIS_8",            /* name */
 126          FALSE,                 /* partial_inplace */
 127          0x0000,                /* src_mask */
 128          0x00ff,                /* dst_mask */
 129          FALSE),                /* pcrel_offset */
 130
 131   /* A 16 bit absolute relocation.  */
 132   HOWTO (R_CRIS_16,             /* type */
 133          0,                     /* rightshift */
 134          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 135          16,                    /* bitsize */
 136          FALSE,                 /* pc_relative */
 137          0,                     /* bitpos */
 138          complain_overflow_bitfield, /* complain_on_overflow */
 139          bfd_elf_generic_reloc, /* special_function */
 140          "R_CRIS_16",           /* name */
 141          FALSE,                 /* partial_inplace */
 142          0x00000000,            /* src_mask */
 143          0x0000ffff,            /* dst_mask */
 144          FALSE),                /* pcrel_offset */
 145
 146   /* A 32 bit absolute relocation.  */
 147   HOWTO (R_CRIS_32,             /* type */
 148          0,                     /* rightshift */
 149          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 150          32,                    /* bitsize */
 151          FALSE,                 /* pc_relative */
 152          0,                     /* bitpos */
 153          /* We don't want overflow complaints for 64-bit vma builds
 154             for e.g. sym+0x40000000 (or actually sym-0xc0000000 in
 155             32-bit ELF) where sym=0xc0001234.
 156             Don't do this for the PIC relocs, as we don't expect to
 157             see them with large offsets.  */
 158          complain_overflow_dont, /* complain_on_overflow */
 159          bfd_elf_generic_reloc, /* special_function */
 160          "R_CRIS_32",           /* name */
 161          FALSE,                 /* partial_inplace */
 162          0x00000000,            /* src_mask */
 163          0xffffffff,            /* dst_mask */
 164          FALSE),                /* pcrel_offset */
 165
 166   /* An 8 bit PC-relative relocation.  */
 167   HOWTO (R_CRIS_8_PCREL,        /* type */
 168          0,                     /* rightshift */
 169          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 170          8,                     /* bitsize */
 171          TRUE,                  /* pc_relative */
 172          0,                     /* bitpos */
 173          complain_overflow_bitfield, /* complain_on_overflow */
 174          cris_elf_pcrel_reloc,  /* special_function */
 175          "R_CRIS_8_PCREL",      /* name */
 176          FALSE,                 /* partial_inplace */
 177          0x0000,                /* src_mask */
 178          0x00ff,                /* dst_mask */
 179          TRUE),                 /* pcrel_offset */
 180
 181   /* A 16 bit PC-relative relocation.  */
 182   HOWTO (R_CRIS_16_PCREL,       /* type */
 183          0,                     /* rightshift */
 184          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 185          16,                    /* bitsize */
 186          TRUE,                  /* pc_relative */
 187          0,                     /* bitpos */
 188          complain_overflow_bitfield, /* complain_on_overflow */
 189          cris_elf_pcrel_reloc,  /* special_function */
 190          "R_CRIS_16_PCREL",     /* name */
 191          FALSE,                 /* partial_inplace */
 192          0x00000000,            /* src_mask */
 193          0x0000ffff,            /* dst_mask */
 194          TRUE),                 /* pcrel_offset */
 195
 196   /* A 32 bit PC-relative relocation.  */
 197   HOWTO (R_CRIS_32_PCREL,       /* type */
 198          0,                     /* rightshift */
 199          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 200          32,                    /* bitsize */
 201          TRUE,                  /* pc_relative */
 202          0,                     /* bitpos */
 203          complain_overflow_bitfield, /* complain_on_overflow */
 204          cris_elf_pcrel_reloc,  /* special_function */
 205          "R_CRIS_32_PCREL",     /* name */
 206          FALSE,                 /* partial_inplace */
 207          0x00000000,            /* src_mask */
 208          0xffffffff,            /* dst_mask */
 209          TRUE),                 /* pcrel_offset */
 210
 211   /* GNU extension to record C++ vtable hierarchy.  */
 212   HOWTO (R_CRIS_GNU_VTINHERIT,  /* type */
 213          0,                     /* rightshift */
 214          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 215          0,                     /* bitsize */
 216          FALSE,                 /* pc_relative */
 217          0,                     /* bitpos */
 218          complain_overflow_dont, /* complain_on_overflow */
 219          NULL,                  /* special_function */
 220          "R_CRIS_GNU_VTINHERIT", /* name */
 221          FALSE,                 /* partial_inplace */
 222          0,                     /* src_mask */
 223          0,                     /* dst_mask */
 224          FALSE),                /* pcrel_offset */
 225
 226   /* GNU extension to record C++ vtable member usage.  */
 227   HOWTO (R_CRIS_GNU_VTENTRY,    /* type */
 228          0,                     /* rightshift */
 229          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 230          0,                     /* bitsize */
 231          FALSE,                 /* pc_relative */
 232          0,                     /* bitpos */
 233          complain_overflow_dont, /* complain_on_overflow */
 234          _bfd_elf_rel_vtable_reloc_fn,  /* special_function */
 235          "R_CRIS_GNU_VTENTRY",   /* name */
 236          FALSE,                 /* partial_inplace */
 237          0,                     /* src_mask */
 238          0,                     /* dst_mask */
 239          FALSE),                /* pcrel_offset */
 240
 241   /* This is used only by the dynamic linker.  The symbol should exist
 242      both in the object being run and in some shared library.  The
 243      dynamic linker copies the data addressed by the symbol from the
 244      shared library into the object, because the object being
 245      run has to have the data at some particular address.  */
 246   HOWTO (R_CRIS_COPY,           /* type */
 247          0,                     /* rightshift */
 248          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 249          32,                    /* bitsize */
 250          FALSE,                 /* pc_relative */
 251          0,                     /* bitpos */
 252          complain_overflow_bitfield, /* complain_on_overflow */
 253          bfd_elf_generic_reloc, /* special_function */
 254          "R_CRIS_COPY",         /* name */
 255          FALSE,                 /* partial_inplace */
 256          0,                     /* src_mask */
 257          0,                     /* dst_mask */
 258          FALSE),                /* pcrel_offset */
 259
 260   /* Like R_CRIS_32, but used when setting global offset table entries.  */
 261   HOWTO (R_CRIS_GLOB_DAT,       /* type */
 262          0,                     /* rightshift */
 263          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 264          32,                    /* bitsize */
 265          FALSE,                 /* pc_relative */
 266          0,                     /* bitpos */
 267          complain_overflow_bitfield, /* complain_on_overflow */
 268          bfd_elf_generic_reloc, /* special_function */
 269          "R_CRIS_GLOB_DAT",     /* name */
 270          FALSE,                 /* partial_inplace */
 271          0,                     /* src_mask */
 272          0xffffffff,            /* dst_mask */
 273          FALSE),                /* pcrel_offset */
 274
 275   /* Marks a procedure linkage table entry for a symbol.  */
 276   HOWTO (R_CRIS_JUMP_SLOT,      /* type */
 277          0,                     /* rightshift */
 278          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 279          32,                    /* bitsize */
 280          FALSE,                 /* pc_relative */
 281          0,                     /* bitpos */
 282          complain_overflow_bitfield, /* complain_on_overflow */
 283          bfd_elf_generic_reloc, /* special_function */
 284          "R_CRIS_JUMP_SLOT",    /* name */
 285          FALSE,                 /* partial_inplace */
 286          0,                     /* src_mask */
 287          0,                     /* dst_mask */
 288          FALSE),                /* pcrel_offset */
 289
 290   /* Used only by the dynamic linker.  When the object is run, this
 291      longword is set to the load address of the object, plus the
 292      addend.  */
 293   HOWTO (R_CRIS_RELATIVE,       /* type */
 294          0,                     /* rightshift */
 295          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 296          32,                    /* bitsize */
 297          FALSE,                 /* pc_relative */
 298          0,                     /* bitpos */
 299          complain_overflow_bitfield, /* complain_on_overflow */
 300          bfd_elf_generic_reloc, /* special_function */
 301          "R_CRIS_RELATIVE",     /* name */
 302          FALSE,                 /* partial_inplace */
 303          0,                     /* src_mask */
 304          0xffffffff,            /* dst_mask */
 305          FALSE),                /* pcrel_offset */
 306
 307   /* Like R_CRIS_32, but referring to the GOT table entry for the symbol.  */
 308   HOWTO (R_CRIS_16_GOT,         /* type */
 309          0,                     /* rightshift */
 310          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 311          16,                    /* bitsize */
 312          FALSE,                 /* pc_relative */
 313          0,                     /* bitpos */
 314          complain_overflow_bitfield, /* complain_on_overflow */
 315          bfd_elf_generic_reloc, /* special_function */
 316          "R_CRIS_16_GOT",       /* name */
 317          FALSE,                 /* partial_inplace */
 318          0,                     /* src_mask */
 319          0xffff,                /* dst_mask */
 320          FALSE),                /* pcrel_offset */
 321
 322   HOWTO (R_CRIS_32_GOT,         /* type */
 323          0,                     /* rightshift */
 324          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 325          32,                    /* bitsize */
 326          FALSE,                 /* pc_relative */
 327          0,                     /* bitpos */
 328          complain_overflow_bitfield, /* complain_on_overflow */
 329          bfd_elf_generic_reloc, /* special_function */
 330          "R_CRIS_32_GOT",       /* name */
 331          FALSE,                 /* partial_inplace */
 332          0,                     /* src_mask */
 333          0xffffffff,            /* dst_mask */
 334          FALSE),                /* pcrel_offset */
 335
 336   /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of
 337      the GOT table for the symbol.  */
 338   HOWTO (R_CRIS_16_GOTPLT,      /* type */
 339          0,                     /* rightshift */
 340          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 341          16,                    /* bitsize */
 342          FALSE,                 /* pc_relative */
 343          0,                     /* bitpos */
 344          complain_overflow_bitfield, /* complain_on_overflow */
 345          bfd_elf_generic_reloc, /* special_function */
 346          "R_CRIS_16_GOTPLT",    /* name */
 347          FALSE,                 /* partial_inplace */
 348          0,                     /* src_mask */
 349          0xffff,                /* dst_mask */
 350          FALSE),                /* pcrel_offset */
 351
 352   HOWTO (R_CRIS_32_GOTPLT,      /* type */
 353          0,                     /* rightshift */
 354          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 355          32,                    /* bitsize */
 356          FALSE,                 /* pc_relative */
 357          0,                     /* bitpos */
 358          complain_overflow_bitfield, /* complain_on_overflow */
 359          bfd_elf_generic_reloc, /* special_function */
 360          "R_CRIS_32_GOTPLT",    /* name */
 361          FALSE,                 /* partial_inplace */
 362          0,                     /* src_mask */
 363          0xffffffff,            /* dst_mask */
 364          FALSE),                /* pcrel_offset */
 365
 366   /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should
 367      be necessary.  */
 368   HOWTO (R_CRIS_32_GOTREL,      /* type */
 369          0,                     /* rightshift */
 370          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 371          32,                    /* bitsize */
 372          FALSE,                 /* pc_relative */
 373          0,                     /* bitpos */
 374          complain_overflow_bitfield, /* complain_on_overflow */
 375          bfd_elf_generic_reloc, /* special_function */
 376          "R_CRIS_32_GOTREL",    /* name */
 377          FALSE,                 /* partial_inplace */
 378          0,                     /* src_mask */
 379          0xffffffff,            /* dst_mask */
 380          FALSE),                /* pcrel_offset */
 381
 382   /* A 32-bit offset from GOT to entry for this symbol in PLT and request
 383      to create PLT entry for symbol.  */
 384   HOWTO (R_CRIS_32_PLT_GOTREL,  /* type */
 385          0,                     /* rightshift */
 386          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 387          32,                    /* bitsize */
 388          FALSE,                 /* pc_relative */
 389          0,                     /* bitpos */
 390          complain_overflow_bitfield, /* complain_on_overflow */
 391          bfd_elf_generic_reloc, /* special_function */
 392          "R_CRIS_32_PLT_GOTREL", /* name */
 393          FALSE,                 /* partial_inplace */
 394          0,                     /* src_mask */
 395          0xffffffff,            /* dst_mask */
 396          FALSE),                /* pcrel_offset */
 397
 398   /* A 32-bit offset from PC (location after the relocation) + addend to
 399      entry for this symbol in PLT and request to create PLT entry for
 400      symbol.  */
 401   HOWTO (R_CRIS_32_PLT_PCREL,   /* type */
 402          0,                     /* rightshift */
 403          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 404          32,                    /* bitsize */
 405          TRUE,                  /* pc_relative */
 406          0,                     /* bitpos */
 407          complain_overflow_bitfield, /* complain_on_overflow */
 408          cris_elf_pcrel_reloc,  /* special_function */
 409          "R_CRIS_32_PLT_PCREL", /* name */
 410          FALSE,                 /* partial_inplace */
 411          0,                     /* src_mask */
 412          0xffffffff,            /* dst_mask */
 413          TRUE),                 /* pcrel_offset */
 414
 415   /* We don't handle these in any special manner and cross-format
 416      linking is not supported; just recognize them enough to pass them
 417      around.  FIXME: do the same for most PIC relocs and add sanity
 418      tests to actually refuse gracefully to handle these and PIC
 419      relocs for cross-format linking.  */
 420 #define TLSHOWTO32(name) \
 421  HOWTO (name, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, \
 422         bfd_elf_generic_reloc, #name, FALSE, 0, 0xffffffff, FALSE)
 423 #define TLSHOWTO16X(name, X)         \
 424  HOWTO (name, 0, 1, 16, FALSE, 0, complain_overflow_ ## X, \
 425         bfd_elf_generic_reloc, #name, FALSE, 0, 0xffff, FALSE)
 426 #define TLSHOWTO16(name) TLSHOWTO16X(name, unsigned)
 427 #define TLSHOWTO16S(name) TLSHOWTO16X(name, signed)
 428
 429   TLSHOWTO32 (R_CRIS_32_GOT_GD),
 430   TLSHOWTO16 (R_CRIS_16_GOT_GD),
 431   TLSHOWTO32 (R_CRIS_32_GD),
 432   TLSHOWTO32 (R_CRIS_DTP),
 433   TLSHOWTO32 (R_CRIS_32_DTPREL),
 434   TLSHOWTO16S (R_CRIS_16_DTPREL),
 435   TLSHOWTO32 (R_CRIS_32_GOT_TPREL),
 436   TLSHOWTO16S (R_CRIS_16_GOT_TPREL),
 437   TLSHOWTO32 (R_CRIS_32_TPREL),
 438   TLSHOWTO16S (R_CRIS_16_TPREL),
 439   TLSHOWTO32 (R_CRIS_DTPMOD),
 440   TLSHOWTO32 (R_CRIS_32_IE)
 441 };
 442 \f
 443 /* Map BFD reloc types to CRIS ELF reloc types.  */
 444
 445 struct cris_reloc_map
 446 {
 447   bfd_reloc_code_real_type bfd_reloc_val;
 448   unsigned int cris_reloc_val;
 449 };
 450
 451 static const struct cris_reloc_map cris_reloc_map [] =
 452 {
 453   { BFD_RELOC_NONE,             R_CRIS_NONE },
 454   { BFD_RELOC_8,                R_CRIS_8 },
 455   { BFD_RELOC_16,               R_CRIS_16 },
 456   { BFD_RELOC_32,               R_CRIS_32 },
 457   { BFD_RELOC_8_PCREL,          R_CRIS_8_PCREL },
 458   { BFD_RELOC_16_PCREL,         R_CRIS_16_PCREL },
 459   { BFD_RELOC_32_PCREL,         R_CRIS_32_PCREL },
 460   { BFD_RELOC_VTABLE_INHERIT,   R_CRIS_GNU_VTINHERIT },
 461   { BFD_RELOC_VTABLE_ENTRY,     R_CRIS_GNU_VTENTRY },
 462   { BFD_RELOC_CRIS_COPY,        R_CRIS_COPY },
 463   { BFD_RELOC_CRIS_GLOB_DAT,    R_CRIS_GLOB_DAT },
 464   { BFD_RELOC_CRIS_JUMP_SLOT,   R_CRIS_JUMP_SLOT },
 465   { BFD_RELOC_CRIS_RELATIVE,    R_CRIS_RELATIVE },
 466   { BFD_RELOC_CRIS_16_GOT,      R_CRIS_16_GOT },
 467   { BFD_RELOC_CRIS_32_GOT,      R_CRIS_32_GOT },
 468   { BFD_RELOC_CRIS_16_GOTPLT,   R_CRIS_16_GOTPLT },
 469   { BFD_RELOC_CRIS_32_GOTPLT,   R_CRIS_32_GOTPLT },
 470   { BFD_RELOC_CRIS_32_GOTREL,   R_CRIS_32_GOTREL },
 471   { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL },
 472   { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL },
 473   { BFD_RELOC_CRIS_32_GOT_GD,   R_CRIS_32_GOT_GD },
 474   { BFD_RELOC_CRIS_16_GOT_GD,   R_CRIS_16_GOT_GD },
 475   { BFD_RELOC_CRIS_32_GD,       R_CRIS_32_GD },
 476   { BFD_RELOC_CRIS_DTP, R_CRIS_DTP },
 477   { BFD_RELOC_CRIS_32_DTPREL,   R_CRIS_32_DTPREL },
 478   { BFD_RELOC_CRIS_16_DTPREL,   R_CRIS_16_DTPREL },
 479   { BFD_RELOC_CRIS_32_GOT_TPREL, R_CRIS_32_GOT_TPREL },
 480   { BFD_RELOC_CRIS_16_GOT_TPREL, R_CRIS_16_GOT_TPREL },
 481   { BFD_RELOC_CRIS_32_TPREL,    R_CRIS_32_TPREL },
 482   { BFD_RELOC_CRIS_16_TPREL,    R_CRIS_16_TPREL },
 483   { BFD_RELOC_CRIS_DTPMOD,      R_CRIS_DTPMOD },
 484   { BFD_RELOC_CRIS_32_IE,       R_CRIS_32_IE }
 485 };
 486
 487 static reloc_howto_type *
 488 cris_reloc_type_lookup (abfd, code)
 489      bfd * abfd ATTRIBUTE_UNUSED;
 490      bfd_reloc_code_real_type code;
 491 {
 492   unsigned int i;
 493
 494   for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++)
 495     if (cris_reloc_map [i].bfd_reloc_val == code)
 496       return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val];
 497
 498   return NULL;
 499 }
 500
 501 static reloc_howto_type *
 502 cris_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
 503 {
 504   unsigned int i;
 505
 506   for (i = 0;
 507        i < sizeof (cris_elf_howto_table) / sizeof (cris_elf_howto_table[0]);
 508        i++)
 509     if (cris_elf_howto_table[i].name != NULL
 510         && strcasecmp (cris_elf_howto_table[i].name, r_name) == 0)
 511       return &cris_elf_howto_table[i];
 512
 513   return NULL;
 514 }
 515
 516 /* Set the howto pointer for an CRIS ELF reloc.  */
 517
 518 static void
 519 cris_info_to_howto_rela (abfd, cache_ptr, dst)
 520      bfd * abfd ATTRIBUTE_UNUSED;
 521      arelent * cache_ptr;
 522      Elf_Internal_Rela * dst;
 523 {
 524   enum elf_cris_reloc_type r_type;
 525
 526   r_type = ELF32_R_TYPE (dst->r_info);
 527   BFD_ASSERT (r_type < (unsigned int) R_CRIS_max);
 528   cache_ptr->howto = & cris_elf_howto_table [r_type];
 529 }
 530
 531 bfd_reloc_status_type
 532 cris_elf_pcrel_reloc (abfd, reloc_entry, symbol, data, input_section,
 533                       output_bfd, error_message)
 534      bfd *abfd ATTRIBUTE_UNUSED;
 535      arelent *reloc_entry;
 536      asymbol *symbol;
 537      PTR data ATTRIBUTE_UNUSED;
 538      asection *input_section;
 539      bfd *output_bfd;
 540      char **error_message ATTRIBUTE_UNUSED;
 541 {
 542   /* By default (using only bfd_elf_generic_reloc when linking to
 543      non-ELF formats) PC-relative relocs are relative to the beginning
 544      of the reloc.  CRIS PC-relative relocs are relative to the position
 545      *after* the reloc because that's what pre-CRISv32 PC points to
 546      after reading an insn field with that reloc.  (For CRISv32, PC is
 547      actually relative to the start of the insn, but we keep the old
 548      definition.)  Still, we use as much generic machinery as we can.
 549
 550      Only adjust when doing a final link.  */
 551   if (output_bfd == (bfd *) NULL)
 552     reloc_entry->addend -= 1 << reloc_entry->howto->size;
 553
 554   return
 555     bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
 556                            input_section, output_bfd, error_message);
 557 }
 558 \f
 559 /* Support for core dump NOTE sections.
 560    The slightly unintuitive code layout is an attempt to keep at least
 561    some similarities with other ports, hoping to simplify general
 562    changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart.  */
 563
 564 static bfd_boolean
 565 cris_elf_grok_prstatus (abfd, note)
 566      bfd *abfd;
 567      Elf_Internal_Note *note;
 568 {
 569   int offset;
 570   size_t size;
 571
 572   if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
 573     switch (note->descsz)
 574       {
 575       default:
 576         return FALSE;
 577
 578       case 202:         /* Linux/CRISv32 */
 579         /* pr_cursig */
 580         elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
 581
 582         /* pr_pid */
 583         elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
 584
 585         /* pr_reg */
 586         offset = 70;
 587         size = 128;
 588
 589         break;
 590       }
 591   else
 592     switch (note->descsz)
 593       {
 594       default:
 595         return FALSE;
 596
 597       case 214:         /* Linux/CRIS */
 598         /* pr_cursig */
 599         elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
 600
 601         /* pr_pid */
 602         elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
 603
 604         /* pr_reg */
 605         offset = 70;
 606         size = 140;
 607
 608         break;
 609       }
 610
 611   /* Make a ".reg/999" section.  */
 612   return _bfd_elfcore_make_pseudosection (abfd, ".reg",
 613                                           size, note->descpos + offset);
 614 }
 615
 616 static bfd_boolean
 617 cris_elf_grok_psinfo (abfd, note)
 618      bfd *abfd;
 619      Elf_Internal_Note *note;
 620 {
 621   if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
 622     switch (note->descsz)
 623       {
 624       default:
 625         return FALSE;
 626
 627       case 124:         /* Linux/CRISv32 elf_prpsinfo */
 628         elf_tdata (abfd)->core_program
 629           = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
 630         elf_tdata (abfd)->core_command
 631           = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
 632       }
 633   else
 634     switch (note->descsz)
 635       {
 636       default:
 637         return FALSE;
 638
 639       case 124:         /* Linux/CRIS elf_prpsinfo */
 640         elf_tdata (abfd)->core_program
 641           = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
 642         elf_tdata (abfd)->core_command
 643           = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
 644       }
 645
 646   /* Note that for some reason, a spurious space is tacked
 647      onto the end of the args in some (at least one anyway)
 648      implementations, so strip it off if it exists.  */
 649
 650   {
 651     char *command = elf_tdata (abfd)->core_command;
 652     int n = strlen (command);
 653
 654     if (0 < n && command[n - 1] == ' ')
 655       command[n - 1] = '\0';
 656   }
 657
 658   return TRUE;
 659 }
 660 \f
 661 /* The name of the dynamic interpreter.  This is put in the .interp
 662    section.  */
 663
 664 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
 665
 666 /* The size in bytes of an entry in the procedure linkage table.  */
 667
 668 #define PLT_ENTRY_SIZE 20
 669 #define PLT_ENTRY_SIZE_V32 26
 670
 671 /* The first entry in an absolute procedure linkage table looks like this.  */
 672
 673 static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] =
 674 {
 675   0xfc, 0xe1,
 676   0x7e, 0x7e,   /* push mof.  */
 677   0x7f, 0x0d,   /*  (dip [pc+]) */
 678   0, 0, 0, 0,   /*  Replaced with address of .got + 4.  */
 679   0x30, 0x7a,   /* move [...],mof */
 680   0x7f, 0x0d,   /*  (dip [pc+]) */
 681   0, 0, 0, 0,   /*  Replaced with address of .got + 8.  */
 682   0x30, 0x09    /* jump [...] */
 683 };
 684
 685 static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
 686 {
 687   0x84, 0xe2,   /* subq 4,$sp */
 688   0x6f, 0xfe,   /* move.d 0,$acr */
 689   0, 0, 0, 0,   /*  Replaced by address of .got + 4.  */
 690   0x7e, 0x7a,   /* move $mof,[$sp] */
 691   0x3f, 0x7a,   /* move [$acr],$mof */
 692   0x04, 0xf2,   /* addq 4,acr */
 693   0x6f, 0xfa,   /* move.d [$acr],$acr */
 694   0xbf, 0x09,   /* jump $acr */
 695   0xb0, 0x05,   /* nop */
 696   0, 0          /*  Pad out to 26 bytes.  */
 697 };
 698
 699 /* Subsequent entries in an absolute procedure linkage table look like
 700    this.  */
 701
 702 static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] =
 703 {
 704   0x7f, 0x0d,   /*  (dip [pc+]) */
 705   0, 0, 0, 0,   /*  Replaced with address of this symbol in .got.  */
 706   0x30, 0x09,   /* jump [...] */
 707   0x3f,  0x7e,  /* move [pc+],mof */
 708   0, 0, 0, 0,   /*  Replaced with offset into relocation table.  */
 709   0x2f, 0xfe,   /* add.d [pc+],pc */
 710   0xec, 0xff,
 711   0xff, 0xff    /*  Replaced with offset to start of .plt.  */
 712 };
 713
 714 static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
 715 {
 716   0x6f, 0xfe,   /* move.d 0,$acr */
 717   0, 0, 0, 0,   /*  Replaced with address of this symbol in .got.  */
 718   0x6f, 0xfa,   /* move.d [$acr],$acr */
 719   0xbf, 0x09,   /* jump $acr */
 720   0xb0, 0x05,   /* nop */
 721   0x3f, 0x7e,   /* move 0,mof */
 722   0, 0, 0, 0,   /*  Replaced with offset into relocation table. */
 723   0xbf, 0x0e,   /* ba start_of_plt0_entry */
 724   0, 0, 0, 0,   /*  Replaced with offset to plt0 entry.  */
 725   0xb0, 0x05    /* nop */
 726 };
 727
 728 /* The first entry in a PIC procedure linkage table looks like this.  */
 729
 730 static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] =
 731 {
 732   0xfc, 0xe1, 0x7e, 0x7e,       /* push mof */
 733   0x04, 0x01, 0x30, 0x7a,       /* move [r0+4],mof */
 734   0x08, 0x01, 0x30, 0x09,       /* jump [r0+8] */
 735   0, 0, 0, 0, 0, 0, 0, 0,       /*  Pad out to 20 bytes.  */
 736 };
 737
 738 static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
 739 {
 740   0x84, 0xe2,   /* subq 4,$sp */
 741   0x04, 0x01,   /* addoq 4,$r0,$acr */
 742   0x7e, 0x7a,   /* move $mof,[$sp] */
 743   0x3f, 0x7a,   /* move [$acr],$mof */
 744   0x04, 0xf2,   /* addq 4,$acr */
 745   0x6f, 0xfa,   /* move.d [$acr],$acr */
 746   0xbf, 0x09,   /* jump $acr */
 747   0xb0, 0x05,   /* nop */
 748   0, 0,         /*  Pad out to 26 bytes.  */
 749   0, 0, 0, 0,
 750   0, 0, 0, 0
 751 };
 752
 753 /* Subsequent entries in a PIC procedure linkage table look like this.  */
 754
 755 static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] =
 756 {
 757   0x6f, 0x0d,   /*  (bdap [pc+].d,r0) */
 758   0, 0, 0, 0,   /*  Replaced with offset of this symbol in .got.  */
 759   0x30, 0x09,   /* jump [...] */
 760   0x3f, 0x7e,   /* move [pc+],mof */
 761   0, 0, 0, 0,   /*  Replaced with offset into relocation table.  */
 762   0x2f, 0xfe,   /* add.d [pc+],pc */
 763   0xec, 0xff,   /*  Replaced with offset to start of .plt.  */
 764   0xff, 0xff
 765 };
 766
 767 static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
 768 {
 769   0x6f, 0x0d,   /* addo.d 0,$r0,$acr */
 770   0, 0, 0, 0,   /*  Replaced with offset of this symbol in .got.  */
 771   0x6f, 0xfa,   /* move.d [$acr],$acr */
 772   0xbf, 0x09,   /* jump $acr */
 773   0xb0, 0x05,   /* nop */
 774   0x3f, 0x7e,   /* move relocoffs,$mof */
 775   0, 0, 0, 0,   /*  Replaced with offset into relocation table.  */
 776   0xbf, 0x0e,   /* ba start_of_plt */
 777   0, 0, 0, 0,   /*  Replaced with offset to start of .plt.  */
 778   0xb0, 0x05    /* nop */
 779 };
 780 \f
 781 /* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits
 782    (and most other PIC/shlib stuff).  Check that we don't drift away
 783    without reason.
 784
 785    The CRIS linker, like the m68k and i386 linkers (and probably the rest
 786    too) needs to keep track of the number of relocs that it decides to
 787    copy in check_relocs for each symbol.  This is so that it can discard
 788    PC relative relocs if it doesn't need them when linking with
 789    -Bsymbolic.  We store the information in a field extending the regular
 790    ELF linker hash table.  */
 791
 792 /* This structure keeps track of the number of PC relative relocs we have
 793    copied for a given symbol.  */
 794
 795 struct elf_cris_pcrel_relocs_copied
 796 {
 797   /* Next section.  */
 798   struct elf_cris_pcrel_relocs_copied *next;
 799
 800   /* A section in dynobj.  */
 801   asection *section;
 802
 803   /* Number of relocs copied in this section.  */
 804   bfd_size_type count;
 805
 806   /* Example of reloc being copied, for message.  */
 807   enum elf_cris_reloc_type r_type;
 808 };
 809
 810 /* CRIS ELF linker hash entry.  */
 811
 812 struct elf_cris_link_hash_entry
 813 {
 814   struct elf_link_hash_entry root;
 815
 816   /* Number of PC relative relocs copied for this symbol.  */
 817   struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied;
 818
 819   /* The GOTPLT references are CRIS-specific; the goal is to avoid having
 820      both a general GOT and a PLT-specific GOT entry for the same symbol,
 821      when it is referenced both as a function and as a function pointer.
 822
 823      Number of GOTPLT references for a function.  */
 824   bfd_signed_vma gotplt_refcount;
 825
 826   /* Actual GOTPLT index for this symbol, if applicable, or zero if not
 827      (zero is never used as an index).  FIXME: We should be able to fold
 828      this with gotplt_refcount in a union, like the got and plt unions in
 829      elf_link_hash_entry.  */
 830   bfd_size_type gotplt_offset;
 831
 832   /* The root.got.refcount is the sum of the regular reference counts
 833      (this) and those members below.  We have to keep a separate count
 834      to track when we've found the first (or last) reference to a
 835      regular got entry.  The offset is in root.got.offset.  */
 836   bfd_signed_vma reg_got_refcount;
 837
 838   /* Similar to the above, the number of reloc references to this
 839      symbols that need a R_CRIS_32_TPREL slot.  The offset is in
 840      root.got.offset, because this and .dtp_refcount can't validly
 841      happen when there's also a regular GOT entry; that's invalid
 842      input for which an error is emitted.  */
 843   bfd_signed_vma tprel_refcount;
 844
 845   /* Similar to the above, the number of reloc references to this
 846      symbols that need a R_CRIS_DTP slot.  The offset is in
 847      root.got.offset; plus 4 if .tprel_refcount > 0.  */
 848   bfd_signed_vma dtp_refcount;
 849 };
 850
 851 /* The local_got_refcounts and local_got_offsets are a multiple of
 852    LSNUM in size, namely LGOT_ALLOC_NELTS_FOR(LSNUM) (plus one for the
 853    refcount for GOT itself, see code), with the summary / group offset
 854    for local symbols located at offset N, reference counts for
 855    ordinary (address) relocs at offset N + LSNUM, for R_CRIS_DTP
 856    relocs at offset N + 2*LSNUM, and for R_CRIS_32_TPREL relocs at N +
 857    3*LSNUM.  */
 858
 859 #define LGOT_REG_NDX(x) ((x) + symtab_hdr->sh_info)
 860 #define LGOT_DTP_NDX(x) ((x) + 2 * symtab_hdr->sh_info)
 861 #define LGOT_TPREL_NDX(x) ((x) + 3 * symtab_hdr->sh_info)
 862 #define LGOT_ALLOC_NELTS_FOR(x) ((x) * 4)
 863
 864 /* CRIS ELF linker hash table.  */
 865
 866 struct elf_cris_link_hash_table
 867 {
 868   struct elf_link_hash_table root;
 869
 870   /* We can't use the PLT offset and calculate to get the GOTPLT offset,
 871      since we try and avoid creating GOTPLT:s when there's already a GOT.
 872      Instead, we keep and update the next available index here.  */
 873   bfd_size_type next_gotplt_entry;
 874
 875   /* The number of R_CRIS_32_DTPREL and R_CRIS_16_DTPREL that have
 876      been seen for any input; if != 0, then the constant-offset
 877      R_CRIS_DTPMOD is needed for this DSO/executable.  This turns
 878      negative at relocation, so that we don't need an extra flag for
 879      when the reloc is output.  */
 880   bfd_signed_vma dtpmod_refcount;
 881 };
 882
 883 /* Traverse a CRIS ELF linker hash table.  */
 884
 885 #define elf_cris_link_hash_traverse(table, func, info)                  \
 886   (elf_link_hash_traverse                                               \
 887    (&(table)->root,                                                     \
 888     (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
 889     (info)))
 890
 891 /* Get the CRIS ELF linker hash table from a link_info structure.  */
 892
 893 #define elf_cris_hash_table(p) \
 894   ((struct elf_cris_link_hash_table *) (p)->hash)
 895
 896 /* Get the CRIS ELF linker hash entry from a regular hash entry (the
 897    "parent class").  The .root reference is just a simple type
 898    check on the argument.  */
 899
 900 #define elf_cris_hash_entry(p) \
 901  ((struct elf_cris_link_hash_entry *) (&(p)->root))
 902
 903 /* Create an entry in a CRIS ELF linker hash table.  */
 904
 905 static struct bfd_hash_entry *
 906 elf_cris_link_hash_newfunc (entry, table, string)
 907      struct bfd_hash_entry *entry;
 908      struct bfd_hash_table *table;
 909      const char *string;
 910 {
 911   struct elf_cris_link_hash_entry *ret =
 912     (struct elf_cris_link_hash_entry *) entry;
 913
 914   /* Allocate the structure if it has not already been allocated by a
 915      subclass.  */
 916   if (ret == (struct elf_cris_link_hash_entry *) NULL)
 917     ret = ((struct elf_cris_link_hash_entry *)
 918            bfd_hash_allocate (table,
 919                               sizeof (struct elf_cris_link_hash_entry)));
 920   if (ret == (struct elf_cris_link_hash_entry *) NULL)
 921     return (struct bfd_hash_entry *) ret;
 922
 923   /* Call the allocation method of the superclass.  */
 924   ret = ((struct elf_cris_link_hash_entry *)
 925          _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
 926                                      table, string));
 927   if (ret != (struct elf_cris_link_hash_entry *) NULL)
 928     {
 929       ret->pcrel_relocs_copied = NULL;
 930       ret->gotplt_refcount = 0;
 931       ret->gotplt_offset = 0;
 932       ret->dtp_refcount = 0;
 933       ret->tprel_refcount = 0;
 934       ret->reg_got_refcount = 0;
 935     }
 936
 937   return (struct bfd_hash_entry *) ret;
 938 }
 939
 940 /* Create a CRIS ELF linker hash table.  */
 941
 942 static struct bfd_link_hash_table *
 943 elf_cris_link_hash_table_create (abfd)
 944      bfd *abfd;
 945 {
 946   struct elf_cris_link_hash_table *ret;
 947   bfd_size_type amt = sizeof (struct elf_cris_link_hash_table);
 948
 949   ret = ((struct elf_cris_link_hash_table *) bfd_malloc (amt));
 950   if (ret == (struct elf_cris_link_hash_table *) NULL)
 951     return NULL;
 952
 953   if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
 954                                       elf_cris_link_hash_newfunc,
 955                                       sizeof (struct elf_cris_link_hash_entry)))
 956     {
 957       free (ret);
 958       return NULL;
 959     }
 960
 961   /* Initialize to skip over the first three entries in the gotplt; they
 962      are used for run-time symbol evaluation.  */
 963   ret->next_gotplt_entry = 12;
 964
 965   /* We haven't seen any R_CRIS_nn_GOT_TPREL initially.  */
 966   ret->dtpmod_refcount = 0;
 967
 968   return &ret->root.root;
 969 }
 970 \f
 971 /* Perform a single relocation.  By default we use the standard BFD
 972    routines, with a few tweaks.  */
 973
 974 static bfd_reloc_status_type
 975 cris_final_link_relocate (howto, input_bfd, input_section, contents, rel,
 976                           relocation)
 977      reloc_howto_type *  howto;
 978      bfd *               input_bfd;
 979      asection *          input_section;
 980      bfd_byte *          contents;
 981      Elf_Internal_Rela * rel;
 982      bfd_vma             relocation;
 983 {
 984   bfd_reloc_status_type r;
 985   enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
 986
 987   /* PC-relative relocations are relative to the position *after*
 988      the reloc.  Note that for R_CRIS_8_PCREL the adjustment is
 989      not a single byte, since PC must be 16-bit-aligned.  */
 990   switch (r_type)
 991     {
 992       /* Check that the 16-bit GOT relocs are positive.  */
 993     case R_CRIS_16_GOTPLT:
 994     case R_CRIS_16_GOT:
 995       if ((bfd_signed_vma) relocation < 0)
 996         return bfd_reloc_overflow;
 997       break;
 998
 999     case R_CRIS_32_PLT_PCREL:
1000     case R_CRIS_32_PCREL:
1001       relocation -= 2;
1002       /* Fall through.  */
1003     case R_CRIS_8_PCREL:
1004     case R_CRIS_16_PCREL:
1005       relocation -= 2;
1006       break;
1007
1008     default:
1009       break;
1010     }
1011
1012   r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1013                                 contents, rel->r_offset,
1014                                 relocation, rel->r_addend);
1015   return r;
1016 }
1017 \f
1018
1019 /* The number of errors left before we stop outputting reloc-specific
1020    explanatory messages.  By coincidence, this works nicely together
1021    with the default number of messages you'll get from LD about
1022    "relocation truncated to fit" messages before you get an
1023    "additional relocation overflows omitted from the output".  */
1024 static int additional_relocation_error_msg_count = 10;
1025
1026 /* Relocate an CRIS ELF section.  See elf32-fr30.c, from where this was
1027    copied, for further comments.  */
1028
1029 static bfd_boolean
1030 cris_elf_relocate_section (output_bfd, info, input_bfd, input_section,
1031                            contents, relocs, local_syms, local_sections)
1032      bfd *output_bfd ATTRIBUTE_UNUSED;
1033      struct bfd_link_info *info;
1034      bfd *input_bfd;
1035      asection *input_section;
1036      bfd_byte *contents;
1037      Elf_Internal_Rela *relocs;
1038      Elf_Internal_Sym *local_syms;
1039      asection **local_sections;
1040 {
1041   bfd *dynobj;
1042   Elf_Internal_Shdr *symtab_hdr;
1043   struct elf_link_hash_entry **sym_hashes;
1044   bfd_vma *local_got_offsets;
1045   asection *sgot;
1046   asection *splt;
1047   asection *sreloc;
1048   Elf_Internal_Rela *rel;
1049   Elf_Internal_Rela *relend;
1050   asection *srelgot;
1051
1052   dynobj = elf_hash_table (info)->dynobj;
1053   local_got_offsets = elf_local_got_offsets (input_bfd);
1054   symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1055   sym_hashes = elf_sym_hashes (input_bfd);
1056   relend     = relocs + input_section->reloc_count;
1057
1058   sgot = NULL;
1059   splt = NULL;
1060   sreloc = NULL;
1061   srelgot = NULL;
1062
1063   if (dynobj != NULL)
1064     {
1065       splt = bfd_get_section_by_name (dynobj, ".plt");
1066       sgot = bfd_get_section_by_name (dynobj, ".got");
1067     }
1068
1069   for (rel = relocs; rel < relend; rel ++)
1070     {
1071       reloc_howto_type *howto;
1072       unsigned long r_symndx;
1073       Elf_Internal_Sym *sym;
1074       asection *sec;
1075       struct elf_link_hash_entry *h;
1076       bfd_vma relocation;
1077       bfd_reloc_status_type r;
1078       const char *symname = NULL;
1079       enum elf_cris_reloc_type r_type;
1080
1081       r_type = ELF32_R_TYPE (rel->r_info);
1082
1083       if (   r_type == R_CRIS_GNU_VTINHERIT
1084           || r_type == R_CRIS_GNU_VTENTRY)
1085         continue;
1086
1087       r_symndx = ELF32_R_SYM (rel->r_info);
1088       howto  = cris_elf_howto_table + r_type;
1089       h      = NULL;
1090       sym    = NULL;
1091       sec    = NULL;
1092
1093       if (r_symndx < symtab_hdr->sh_info)
1094         {
1095           sym = local_syms + r_symndx;
1096           sec = local_sections [r_symndx];
1097           relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1098
1099           symname = (bfd_elf_string_from_elf_section
1100                      (input_bfd, symtab_hdr->sh_link, sym->st_name));
1101           if (symname == NULL)
1102             symname = bfd_section_name (input_bfd, sec);
1103         }
1104       else
1105         {
1106           bfd_boolean warned;
1107           bfd_boolean unresolved_reloc;
1108
1109           RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1110                                    r_symndx, symtab_hdr, sym_hashes,
1111                                    h, sec, relocation,
1112                                    unresolved_reloc, warned);
1113
1114           symname = h->root.root.string;
1115
1116           if (unresolved_reloc
1117               /* Perhaps we should detect the cases that
1118                  sec->output_section is expected to be NULL like i386 and
1119                  m68k, but apparently (and according to elfxx-ia64.c) all
1120                  valid cases are where the symbol is defined in a shared
1121                  object which we link dynamically against.  This includes
1122                  PLT relocs for which we've created a PLT entry and other
1123                  relocs for which we're prepared to create dynamic
1124                  relocations.
1125
1126                  For now, new situations cause us to just err when
1127                  sec->output_offset is NULL but the object with the symbol
1128                  is *not* dynamically linked against.  Thus this will
1129                  automatically remind us so we can see if there are other
1130                  valid cases we need to revisit.  */
1131               && (sec->owner->flags & DYNAMIC) != 0)
1132             relocation = 0;
1133
1134           else if (h->root.type == bfd_link_hash_defined
1135                    || h->root.type == bfd_link_hash_defweak)
1136             {
1137               /* Here follow the cases where the relocation value must
1138                  be zero (or when further handling is simplified when
1139                  zero).  I can't claim to understand the various
1140                  conditions and they weren't described in the files
1141                  where I copied them from (elf32-m68k.c and
1142                  elf32-i386.c), but let's mention examples of where
1143                  they happen.  FIXME: Perhaps define and use a
1144                  dynamic_symbol_p function like ia64.
1145
1146                  - When creating a shared library, we can have an
1147                  ordinary relocation for a symbol defined in a shared
1148                  library (perhaps the one we create).  We then make
1149                  the relocation value zero, as the value seen now will
1150                  be added into the relocation addend in this shared
1151                  library, but must be handled only at dynamic-link
1152                  time.  FIXME: Not sure this example covers the
1153                  h->elf_link_hash_flags test, though it's there in
1154                  other targets.  */
1155               if (info->shared
1156                   && ((! info->symbolic && h->dynindx != -1)
1157                       || !h->def_regular)
1158                   && (input_section->flags & SEC_ALLOC) != 0
1159                   && (r_type == R_CRIS_8
1160                       || r_type == R_CRIS_16
1161                       || r_type == R_CRIS_32
1162                       || r_type == R_CRIS_8_PCREL
1163                       || r_type == R_CRIS_16_PCREL
1164                       || r_type == R_CRIS_32_PCREL))
1165                 relocation = 0;
1166               else if (!info->relocatable && unresolved_reloc)
1167                 {
1168                   _bfd_error_handler
1169                     (_("%B, section %A: unresolvable relocation %s against symbol `%s'"),
1170                      input_bfd,
1171                      input_section,
1172                      cris_elf_howto_table[r_type].name,
1173                      symname);
1174                   bfd_set_error (bfd_error_bad_value);
1175                   return FALSE;
1176                 }
1177             }
1178         }
1179
1180       if (sec != NULL && elf_discarded_section (sec))
1181         {
1182           /* For relocs against symbols from removed linkonce sections,
1183              or sections discarded by a linker script, we just want the
1184              section contents zeroed.  Avoid any special processing.  */
1185           _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
1186           rel->r_info = 0;
1187           rel->r_addend = 0;
1188           continue;
1189         }
1190
1191       if (info->relocatable)
1192         continue;
1193
1194       switch (r_type)
1195         {
1196         case R_CRIS_16_GOTPLT:
1197         case R_CRIS_32_GOTPLT:
1198           /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
1199              but we require a PLT, and the PLT handling will take care of
1200              filling in the PLT-specific GOT entry.  For the GOT offset,
1201              calculate it as we do when filling it in for the .got.plt
1202              section.  If we don't have a PLT, punt to GOT handling.  */
1203           if (h != NULL
1204               && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
1205             {
1206               asection *sgotplt
1207                 = bfd_get_section_by_name (dynobj, ".got.plt");
1208               bfd_vma got_offset;
1209
1210               BFD_ASSERT (h->dynindx != -1);
1211               BFD_ASSERT (sgotplt != NULL);
1212
1213               got_offset
1214                 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
1215
1216               relocation = got_offset;
1217               break;
1218             }
1219
1220           /* We didn't make a PLT entry for this symbol.  Maybe everything is
1221              folded into the GOT.  Other than folding, this happens when
1222              statically linking PIC code, or when using -Bsymbolic.  Check
1223              that we instead have a GOT entry as done for us by
1224              elf_cris_adjust_dynamic_symbol, and drop through into the
1225              ordinary GOT cases.  This must not happen for the
1226              executable, because any reference it does to a function
1227              that is satisfied by a DSO must generate a PLT.  We assume
1228              these call-specific relocs don't address non-functions.  */
1229           if (h != NULL
1230               && (h->got.offset == (bfd_vma) -1
1231                   || (!info->shared
1232                       && !(h->def_regular
1233                            || (!h->def_dynamic
1234                                && h->root.type == bfd_link_hash_undefweak)))))
1235             {
1236               (*_bfd_error_handler)
1237                 ((h->got.offset == (bfd_vma) -1)
1238                  ? _("%B, section %A: No PLT nor GOT for relocation %s"
1239                      " against symbol `%s'")
1240                  : _("%B, section %A: No PLT for relocation %s"
1241                      " against symbol `%s'"),
1242                  input_bfd,
1243                  input_section,
1244                  cris_elf_howto_table[r_type].name,
1245                  (symname != NULL && symname[0] != '\0'
1246                   ? symname : _("[whose name is lost]")));
1247
1248               /* FIXME: Perhaps blaming input is not the right thing to
1249                  do; this is probably an internal error.  But it is true
1250                  that we didn't like that particular input.  */
1251               bfd_set_error (bfd_error_bad_value);
1252               return FALSE;
1253             }
1254           /* Fall through.  */
1255
1256           /* The size of the actual relocation is not used here; we only
1257              fill in the GOT table here.  */
1258         case R_CRIS_16_GOT:
1259         case R_CRIS_32_GOT:
1260           {
1261             bfd_vma off;
1262
1263             /* Note that despite using RELA relocations, the .got contents
1264                is always filled in with the link-relative relocation
1265                value; the addend.  */
1266
1267             if (h != NULL)
1268               {
1269                 off = h->got.offset;
1270                 BFD_ASSERT (off != (bfd_vma) -1);
1271
1272                 if (!elf_hash_table (info)->dynamic_sections_created
1273                     || (! info->shared
1274                         && (h->def_regular
1275                             || h->type == STT_FUNC
1276                             || h->needs_plt))
1277                     || (info->shared
1278                         && (info->symbolic || h->dynindx == -1)
1279                         && h->def_regular))
1280                   {
1281                     /* This wasn't checked above for ! info->shared, but
1282                        must hold there if we get here; the symbol must
1283                        be defined in the regular program or be undefweak
1284                        or be a function or otherwise need a PLT.  */
1285                     BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created
1286                                 || info->shared
1287                                 || h->def_regular
1288                                 || h->type == STT_FUNC
1289                                 || h->needs_plt
1290                                 || h->root.type == bfd_link_hash_undefweak);
1291
1292                     /* This is actually a static link, or it is a
1293                        -Bsymbolic link and the symbol is defined locally,
1294                        or is undefweak, or the symbol was forced to be
1295                        local because of a version file, or we're not
1296                        creating a dynamic object.  We must initialize this
1297                        entry in the global offset table.  Since the offset
1298                        must always be a multiple of 4, we use the least
1299                        significant bit to record whether we have
1300                        initialized it already.
1301
1302                        If this GOT entry should be runtime-initialized, we
1303                        will create a .rela.got relocation entry to
1304                        initialize the value.  This is done in the
1305                        finish_dynamic_symbol routine.  */
1306                     if ((off & 1) != 0)
1307                       off &= ~1;
1308                     else
1309                       {
1310                         bfd_put_32 (output_bfd, relocation,
1311                                     sgot->contents + off);
1312                         h->got.offset |= 1;
1313                       }
1314                   }
1315               }
1316             else
1317               {
1318                 BFD_ASSERT (local_got_offsets != NULL
1319                             && local_got_offsets[r_symndx] != (bfd_vma) -1);
1320
1321                 off = local_got_offsets[r_symndx];
1322
1323                 /* The offset must always be a multiple of 4.  We use
1324                    the least significant bit to record whether we have
1325                    already generated the necessary reloc.  */
1326                 if ((off & 1) != 0)
1327                   off &= ~1;
1328                 else
1329                   {
1330                     bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1331
1332                     if (info->shared)
1333                       {
1334                         Elf_Internal_Rela outrel;
1335                         bfd_byte *loc;
1336
1337                         if (srelgot == NULL)
1338                           srelgot
1339                             = bfd_get_section_by_name (dynobj, ".rela.got");
1340                         BFD_ASSERT (srelgot != NULL);
1341
1342                         outrel.r_offset = (sgot->output_section->vma
1343                                            + sgot->output_offset
1344                                            + off);
1345                         outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1346                         outrel.r_addend = relocation;
1347                         loc = srelgot->contents;
1348                         loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1349                         bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1350                       }
1351
1352                     local_got_offsets[r_symndx] |= 1;
1353                   }
1354               }
1355
1356             relocation = sgot->output_offset + off;
1357             if (rel->r_addend != 0)
1358               {
1359                 /* We can't do anything for a relocation which is against
1360                    a symbol *plus offset*.  GOT holds relocations for
1361                    symbols.  Make this an error; the compiler isn't
1362                    allowed to pass us these kinds of things.  */
1363                 if (h == NULL)
1364                   (*_bfd_error_handler)
1365                     (_("%B, section %A: relocation %s with non-zero addend %d"
1366                        " against local symbol"),
1367                      input_bfd,
1368                      input_section,
1369                      cris_elf_howto_table[r_type].name,
1370                      rel->r_addend);
1371                 else
1372                   (*_bfd_error_handler)
1373                     (_("%B, section %A: relocation %s with non-zero addend %d"
1374                        " against symbol `%s'"),
1375                      input_bfd,
1376                      input_section,
1377                      cris_elf_howto_table[r_type].name,
1378                      rel->r_addend,
1379                      symname[0] != '\0' ? symname : _("[whose name is lost]"));
1380
1381                 bfd_set_error (bfd_error_bad_value);
1382                 return FALSE;
1383               }
1384           }
1385           break;
1386
1387         case R_CRIS_32_GOTREL:
1388           /* This relocation must only be performed against local symbols.
1389              It's also ok when we link a program and the symbol is either
1390              defined in an ordinary (non-DSO) object or is undefined weak.  */
1391           if (h != NULL
1392               && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1393               && !(!info->shared
1394                    && (h->def_regular
1395                        || (!h->def_dynamic
1396                            && h->root.type == bfd_link_hash_undefweak))))
1397             {
1398               (*_bfd_error_handler)
1399                 (_("%B, section %A: relocation %s is"
1400                    " not allowed for global symbol: `%s'"),
1401                  input_bfd,
1402                  input_section,
1403                  cris_elf_howto_table[r_type].name,
1404                  symname);
1405               bfd_set_error (bfd_error_bad_value);
1406               return FALSE;
1407             }
1408
1409           /* This can happen if we get a link error with the input ELF
1410              variant mismatching the output variant.  Emit an error so
1411              it's noticed if it happens elsewhere.  */
1412           if (sgot == NULL)
1413             {
1414               (*_bfd_error_handler)
1415                 (_("%B, section %A: relocation %s with no GOT created"),
1416                  input_bfd,
1417                  input_section,
1418                  cris_elf_howto_table[r_type].name);
1419               bfd_set_error (bfd_error_bad_value);
1420               return FALSE;
1421             }
1422
1423           /* This relocation is like a PC-relative one, except the
1424              reference point is the location of GOT.  Note that
1425              sgot->output_offset is not involved in this calculation.  We
1426              always want the start of entire .got section, not the
1427              position after the reserved header.  */
1428           relocation -= sgot->output_section->vma;
1429           break;
1430
1431         case R_CRIS_32_PLT_PCREL:
1432           /* Relocation is to the entry for this symbol in the
1433              procedure linkage table.  */
1434
1435           /* Resolve a PLT_PCREL reloc against a local symbol directly,
1436              without using the procedure linkage table.  */
1437           if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1438             break;
1439
1440           if (h->plt.offset == (bfd_vma) -1
1441               || splt == NULL)
1442             {
1443               /* We didn't make a PLT entry for this symbol.  This
1444                  happens when statically linking PIC code, or when
1445                  using -Bsymbolic.  */
1446               break;
1447             }
1448
1449           relocation = (splt->output_section->vma
1450                         + splt->output_offset
1451                         + h->plt.offset);
1452           break;
1453
1454         case R_CRIS_32_PLT_GOTREL:
1455           /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1456              start of the .got section.  See also comment at
1457              R_CRIS_32_GOT.  */
1458           relocation -= sgot->output_section->vma;
1459
1460           /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1461              without using the procedure linkage table.  */
1462           if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1463             break;
1464
1465           if (h->plt.offset == (bfd_vma) -1
1466               || splt == NULL)
1467             {
1468               /* We didn't make a PLT entry for this symbol.  This
1469                  happens when statically linking PIC code, or when
1470                  using -Bsymbolic.  */
1471               break;
1472             }
1473
1474           relocation = (splt->output_section->vma
1475                         + splt->output_offset
1476                         + h->plt.offset
1477                         - sgot->output_section->vma);
1478           break;
1479
1480         case R_CRIS_8_PCREL:
1481         case R_CRIS_16_PCREL:
1482         case R_CRIS_32_PCREL:
1483           /* If the symbol was local, we need no shlib-specific handling.  */
1484           if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1485               || h->dynindx == -1)
1486             break;
1487
1488           /* Fall through.  */
1489         case R_CRIS_8:
1490         case R_CRIS_16:
1491         case R_CRIS_32:
1492           if (info->shared
1493               && r_symndx != 0
1494               && (input_section->flags & SEC_ALLOC) != 0
1495               && ((r_type != R_CRIS_8_PCREL
1496                    && r_type != R_CRIS_16_PCREL
1497                    && r_type != R_CRIS_32_PCREL)
1498                   || (!info->symbolic
1499                       || (h != NULL && !h->def_regular))))
1500             {
1501               Elf_Internal_Rela outrel;
1502               bfd_byte *loc;
1503               bfd_boolean skip, relocate;
1504
1505               /* When generating a shared object, these relocations
1506                  are copied into the output file to be resolved at run
1507                  time.  */
1508
1509               if (sreloc == NULL)
1510                 {
1511                   sreloc = _bfd_elf_get_dynamic_reloc_section
1512                     (input_bfd, input_section, /*rela?*/ TRUE);
1513                   /* The section should have been created in cris_elf_check_relocs,
1514                      but that function will not be called for objects which fail in
1515                      cris_elf_merge_private_bfd_data.  */
1516                   if (sreloc == NULL)
1517                     {
1518                       bfd_set_error (bfd_error_bad_value);
1519                       return FALSE;
1520                     }
1521                 }
1522
1523               skip = FALSE;
1524               relocate = FALSE;
1525
1526               outrel.r_offset =
1527                 _bfd_elf_section_offset (output_bfd, info, input_section,
1528                                          rel->r_offset);
1529               if (outrel.r_offset == (bfd_vma) -1)
1530                 skip = TRUE;
1531               else if (outrel.r_offset == (bfd_vma) -2)
1532                 skip = TRUE, relocate = TRUE;
1533               outrel.r_offset += (input_section->output_section->vma
1534                                   + input_section->output_offset);
1535
1536               if (skip)
1537                 memset (&outrel, 0, sizeof outrel);
1538               /* h->dynindx may be -1 if the symbol was marked to
1539                  become local.  */
1540               else if (h != NULL
1541                        && ((! info->symbolic && h->dynindx != -1)
1542                            || !h->def_regular))
1543                 {
1544                   BFD_ASSERT (h->dynindx != -1);
1545                   outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1546                   outrel.r_addend = relocation + rel->r_addend;
1547                 }
1548               else
1549                 {
1550                   outrel.r_addend = relocation + rel->r_addend;
1551
1552                   if (r_type == R_CRIS_32)
1553                     {
1554                       relocate = TRUE;
1555                       outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1556                     }
1557                   else
1558                     {
1559                       long indx;
1560
1561                       if (bfd_is_abs_section (sec))
1562                         indx = 0;
1563                       else if (sec == NULL || sec->owner == NULL)
1564                         {
1565                           bfd_set_error (bfd_error_bad_value);
1566                           return FALSE;
1567                         }
1568                       else
1569                         {
1570                           asection *osec;
1571
1572                           /* We are turning this relocation into one
1573                              against a section symbol.  It would be
1574                              proper to subtract the symbol's value,
1575                              osec->vma, from the emitted reloc addend,
1576                              but ld.so expects buggy relocs.  */
1577                           osec = sec->output_section;
1578                           indx = elf_section_data (osec)->dynindx;
1579                           if (indx == 0)
1580                             {
1581                               struct elf_cris_link_hash_table *htab;
1582                               htab = elf_cris_hash_table (info);
1583                               osec = htab->root.text_index_section;
1584                               indx = elf_section_data (osec)->dynindx;
1585                             }
1586                           BFD_ASSERT (indx != 0);
1587                         }
1588
1589                       outrel.r_info = ELF32_R_INFO (indx, r_type);
1590                     }
1591                 }
1592
1593               loc = sreloc->contents;
1594               loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1595               bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1596
1597               /* This reloc will be computed at runtime, so there's no
1598                  need to do anything now, except for R_CRIS_32 relocations
1599                  that have been turned into R_CRIS_RELATIVE.  */
1600               if (!relocate)
1601                 continue;
1602             }
1603
1604           break;
1605
1606         case R_CRIS_16_DTPREL:
1607         case R_CRIS_32_DTPREL:
1608           /* This relocation must only be performed against local
1609              symbols.  It's also ok when we link a program and the
1610              symbol is defined in an ordinary (non-DSO) object (if
1611              it's undefined there, we've already seen an error).  */
1612           if (h != NULL
1613               && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1614               && (info->shared
1615                   || (!h->def_regular
1616                       && h->root.type != bfd_link_hash_undefined)))
1617             {
1618               (*_bfd_error_handler)
1619                 ((h->root.type == bfd_link_hash_undefined)
1620                  /* We shouldn't get here for GCC-emitted code.  */
1621                  ? _("%B, section %A: relocation %s has an undefined"
1622                      " reference to `%s', perhaps a declaration mixup?")
1623                  : ("%B, section %A: relocation %s is"
1624                      " not allowed for `%s', a global symbol with default"
1625                      " visibility, perhaps a declaration mixup?"),
1626                  input_bfd,
1627                  input_section,
1628                  cris_elf_howto_table[r_type].name,
1629                  symname != NULL && symname[0] != '\0'
1630                  ? symname : _("[whose name is lost]"));
1631               bfd_set_error (bfd_error_bad_value);
1632               return FALSE;
1633             }
1634
1635           BFD_ASSERT (elf_cris_hash_table (info)->dtpmod_refcount != 0);
1636
1637           /* Fill in a R_CRIS_DTPMOD reloc at offset 3 if we haven't
1638              already done so.  Note that we do this in .got.plt, not
1639              in .got, as .got.plt contains the first part, still the
1640              reloc is against .got, because the linker script directs
1641              (is required to direct) them both into .got.  */
1642           if (elf_cris_hash_table (info)->dtpmod_refcount > 0)
1643             {
1644               asection *sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1645               BFD_ASSERT (sgotplt != NULL);
1646
1647               if (info->shared)
1648                 {
1649                   Elf_Internal_Rela outrel;
1650                   bfd_byte *loc;
1651
1652                   if (srelgot == NULL)
1653                     srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1654                   BFD_ASSERT (srelgot != NULL);
1655                   loc = srelgot->contents;
1656                   loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1657
1658                   bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 12);
1659                   bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1660                   outrel.r_offset = (sgotplt->output_section->vma
1661                                      + sgotplt->output_offset
1662                                      + 12);
1663                   outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTPMOD);
1664                   outrel.r_addend = 0;
1665                   bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1666                 }
1667               else
1668                 {
1669                   /* For an executable, the GOT entry contents is known.  */
1670                   bfd_put_32 (output_bfd, (bfd_vma) 1, sgotplt->contents + 12);
1671                   bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1672                 }
1673
1674               /* Reverse the sign to mark that we've emitted the
1675                  required GOT entry.  */
1676               elf_cris_hash_table (info)->dtpmod_refcount
1677                 = -elf_cris_hash_table (info)->dtpmod_refcount;
1678             }
1679
1680           /* The thread-based offset to the local symbol is the
1681              relocation.  */
1682           relocation -= elf_hash_table (info)->tls_sec == NULL
1683             ? 0 : elf_hash_table (info)->tls_sec->vma;
1684           break;
1685
1686         case R_CRIS_32_GD:
1687           if (info->shared)
1688             {
1689               bfd_set_error (bfd_error_invalid_operation);
1690
1691               /* We've already informed in cris_elf_check_relocs that
1692                  this is an error.  */
1693               return FALSE;
1694             }
1695           /* Fall through.  */
1696
1697         case R_CRIS_16_GOT_GD:
1698         case R_CRIS_32_GOT_GD:
1699           if (rel->r_addend != 0)
1700             {
1701               /* We can't do anything for a relocation which is against a
1702                  symbol *plus offset*.  The GOT holds relocations for
1703                  symbols.  Make this an error; the compiler isn't allowed
1704                  to pass us these kinds of things.  */
1705               (*_bfd_error_handler)
1706                 (_("%B, section %A: relocation %s with non-zero addend %d"
1707                    " against symbol `%s'"),
1708                  input_bfd,
1709                  input_section,
1710                  cris_elf_howto_table[r_type].name,
1711                  rel->r_addend,
1712                  symname[0] != '\0' ? symname : _("[whose name is lost]"));
1713
1714               bfd_set_error (bfd_error_bad_value);
1715               return FALSE;
1716             }
1717
1718           if (!info->shared && (h == NULL || h->def_regular))
1719             {
1720               /* Known contents of the GOT.  */
1721               bfd_vma off;
1722
1723               /* The symbol is defined in the program, so just write
1724                  (1, known_tpoffset) into the GOT.  */
1725               relocation -= elf_hash_table (info)->tls_sec->vma;
1726
1727               if (h != NULL)
1728                 {
1729                   off = elf_cris_hash_entry (h)->tprel_refcount > 0
1730                     ? h->got.offset + 4 : h->got.offset;
1731                 }
1732               else
1733                 {
1734                   off = local_got_offsets[r_symndx];
1735                   if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1736                     off += 4;
1737                 }
1738
1739               /* We use bit 1 of the offset as a flag for GOT entry with
1740                  the R_CRIS_DTP reloc, setting it when we've emitted the
1741                  GOT entry and reloc.  Bit 0 is used for R_CRIS_32_TPREL
1742                  relocs.  */
1743               if ((off & 2) == 0)
1744                 {
1745                   off &= ~3;
1746
1747                   if (h != NULL)
1748                     h->got.offset |= 2;
1749                   else
1750                     local_got_offsets[r_symndx] |= 2;
1751
1752                   bfd_put_32 (output_bfd, 1, sgot->contents + off);
1753                   bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4);
1754                 }
1755               else
1756                 off &= ~3;
1757
1758               relocation = sgot->output_offset + off
1759                 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1760             }
1761           else
1762             {
1763               /* Not all parts of the GOT entry are known; emit a real
1764                  relocation.  */
1765               bfd_vma off;
1766
1767               if (h != NULL)
1768                 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1769                   ? h->got.offset + 4 : h->got.offset;
1770               else
1771                 {
1772                   off = local_got_offsets[r_symndx];
1773                   if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1774                     off += 4;
1775                 }
1776
1777               /* See above re bit 1 and bit 0 usage.  */
1778               if ((off & 2) == 0)
1779                 {
1780                   Elf_Internal_Rela outrel;
1781                   bfd_byte *loc;
1782
1783                   off &= ~3;
1784
1785                   if (h != NULL)
1786                     h->got.offset |= 2;
1787                   else
1788                     local_got_offsets[r_symndx] |= 2;
1789
1790                   /* Clear the target contents of the GOT (just as a
1791                      gesture; it's already cleared on allocation): this
1792                      relocation is not like the other dynrelocs.  */
1793                   bfd_put_32 (output_bfd, 0, sgot->contents + off);
1794                   bfd_put_32 (output_bfd, 0, sgot->contents + off + 4);
1795
1796                   if (srelgot == NULL)
1797                     srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1798                   BFD_ASSERT (srelgot != NULL);
1799
1800                   if (h != NULL && h->dynindx != -1)
1801                     {
1802                       outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP);
1803                       relocation = 0;
1804                     }
1805                   else
1806                     {
1807                       outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP);
1808
1809                       /* NULL if we had an error.  */
1810                       relocation -= elf_hash_table (info)->tls_sec == NULL
1811                         ? 0 : elf_hash_table (info)->tls_sec->vma;
1812                     }
1813
1814                   outrel.r_offset = (sgot->output_section->vma
1815                                      + sgot->output_offset
1816                                      + off);
1817                   outrel.r_addend = relocation;
1818                   loc = srelgot->contents;
1819                   loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1820
1821                   /* NULL if we had an error.  */
1822                   if (srelgot->contents != NULL)
1823                     bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1824                 }
1825               else
1826                 off &= ~3;
1827
1828               relocation = sgot->output_offset + off
1829                 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1830             }
1831
1832           /* The GOT-relative offset to the GOT entry is the
1833              relocation, or for R_CRIS_32_GD, the actual address of
1834              the GOT entry.  */
1835           break;
1836
1837         case R_CRIS_32_IE:
1838           if (info->shared)
1839             {
1840               bfd_set_error (bfd_error_invalid_operation);
1841
1842               /* We've already informed in cris_elf_check_relocs that
1843                  this is an error.  */
1844               return FALSE;
1845             }
1846           /* Fall through.  */
1847
1848         case R_CRIS_32_GOT_TPREL:
1849         case R_CRIS_16_GOT_TPREL:
1850           if (rel->r_addend != 0)
1851             {
1852               /* We can't do anything for a relocation which is
1853                  against a symbol *plus offset*.  GOT holds
1854                  relocations for symbols.  Make this an error; the
1855                  compiler isn't allowed to pass us these kinds of
1856                  things.  */
1857               (*_bfd_error_handler)
1858                 (_("%B, section %A: relocation %s with non-zero addend %d"
1859                    " against symbol `%s'"),
1860                  input_bfd,
1861                  input_section,
1862                  cris_elf_howto_table[r_type].name,
1863                  rel->r_addend,
1864                  symname[0] != '\0' ? symname : _("[whose name is lost]"));
1865               bfd_set_error (bfd_error_bad_value);
1866               return FALSE;
1867             }
1868
1869           if (!info->shared && (h == NULL || h->def_regular))
1870             {
1871               /* Known contents of the GOT.  */
1872               bfd_vma off;
1873
1874               /* The symbol is defined in the program, so just write
1875                  the known_tpoffset into the GOT.  */
1876               relocation -= elf_hash_table (info)->tls_sec->vma;
1877
1878               if (h != NULL)
1879                 off = h->got.offset;
1880               else
1881                 off = local_got_offsets[r_symndx];
1882
1883               /* Bit 0 is used to mark whether we've emitted the required
1884                  entry (and if needed R_CRIS_32_TPREL reloc).  Bit 1
1885                  is used similarly for R_CRIS_DTP, see above.  */
1886               if ((off & 1) == 0)
1887                 {
1888                   off &= ~3;
1889
1890                   if (h != NULL)
1891                     h->got.offset |= 1;
1892                   else
1893                     local_got_offsets[r_symndx] |= 1;
1894
1895                   bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1896                 }
1897               else
1898                 off &= ~3;
1899
1900               relocation = sgot->output_offset + off
1901                 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1902             }
1903           else
1904             {
1905               /* Emit a real relocation.  */
1906               bfd_vma off;
1907
1908               if (h != NULL)
1909                 off = h->got.offset;
1910               else
1911                 off = local_got_offsets[r_symndx];
1912
1913               /* See above re usage of bit 0 and 1.  */
1914               if ((off & 1) == 0)
1915                 {
1916                   Elf_Internal_Rela outrel;
1917                   bfd_byte *loc;
1918
1919                   off &= ~3;
1920
1921                   if (h != NULL)
1922                     h->got.offset |= 1;
1923                   else
1924                     local_got_offsets[r_symndx] |= 1;
1925
1926                   if (srelgot == NULL)
1927                     srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1928                   BFD_ASSERT (srelgot != NULL);
1929
1930                   if (h != NULL && h->dynindx != -1)
1931                     {
1932                       outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL);
1933                       relocation = 0;
1934                     }
1935                   else
1936                     {
1937                       outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL);
1938
1939                       /* NULL if we had an error.  */
1940                       relocation -= elf_hash_table (info)->tls_sec == NULL
1941                         ? 0 : elf_hash_table (info)->tls_sec->vma;
1942                     }
1943
1944                   /* Just "define" the initial contents in some
1945                      semi-logical way.  */
1946                   bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1947
1948                   outrel.r_offset = (sgot->output_section->vma
1949                                      + sgot->output_offset
1950                                      + off);
1951                   outrel.r_addend = relocation;
1952                   loc = srelgot->contents;
1953                   loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1954                   /* NULL if we had an error.  */
1955                   if (srelgot->contents != NULL)
1956                     bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1957                 }
1958               else
1959                 off &= ~3;
1960
1961               relocation = sgot->output_offset + off
1962                 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1963             }
1964
1965           /* The GOT-relative offset to the GOT entry is the relocation,
1966              or for R_CRIS_32_GD, the actual address of the GOT entry.  */
1967           break;
1968
1969         case R_CRIS_16_TPREL:
1970         case R_CRIS_32_TPREL:
1971           /* This relocation must only be performed against symbols
1972              defined in an ordinary (non-DSO) object.  */
1973           if (info->shared)
1974             {
1975               bfd_set_error (bfd_error_invalid_operation);
1976
1977               /* We've already informed in cris_elf_check_relocs that
1978                  this is an error.  */
1979               return FALSE;
1980             }
1981
1982           if (h != NULL
1983               && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1984               && !h->def_regular
1985               /* If it's undefined, then an error message has already
1986                  been emitted.  */
1987               && h->root.type != bfd_link_hash_undefined)
1988             {
1989               (*_bfd_error_handler)
1990                 (_("%B, section %A: relocation %s is"
1991                    " not allowed for symbol: `%s'"
1992                    " which is defined outside the program,"
1993                    " perhaps a declaration mixup?"),
1994                  input_bfd,
1995                  input_section,
1996                  cris_elf_howto_table[r_type].name,
1997                  symname);
1998               bfd_set_error (bfd_error_bad_value);
1999               return FALSE;
2000             }
2001
2002           /* NULL if we had an error.  */
2003           relocation -= elf_hash_table (info)->tls_sec == NULL
2004             ? 0 : elf_hash_table (info)->tls_sec->vma;
2005
2006           /* The TLS-relative offset is the relocation.  */
2007           break;
2008
2009         default:
2010           BFD_FAIL ();
2011           return FALSE;
2012         }
2013
2014       r = cris_final_link_relocate (howto, input_bfd, input_section,
2015                                      contents, rel, relocation);
2016
2017       if (r != bfd_reloc_ok)
2018         {
2019           const char * msg = (const char *) NULL;
2020
2021           switch (r)
2022             {
2023             case bfd_reloc_overflow:
2024               r = info->callbacks->reloc_overflow
2025                 (info, (h ? &h->root : NULL), symname, howto->name,
2026                  (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
2027               if (additional_relocation_error_msg_count > 0)
2028                 {
2029                   additional_relocation_error_msg_count--;
2030                   switch (r_type)
2031                     {
2032                     case R_CRIS_16_GOTPLT:
2033                     case R_CRIS_16_GOT:
2034
2035                       /* Not just TLS is involved here, so we make
2036                          generation and message depend on -fPIC/-fpic
2037                          only.  */
2038                     case R_CRIS_16_GOT_TPREL:
2039                     case R_CRIS_16_GOT_GD:
2040                       (*_bfd_error_handler)
2041                         (_("(too many global variables for -fpic:"
2042                            " recompile with -fPIC)"));
2043                       break;
2044
2045                     case R_CRIS_16_TPREL:
2046                     case R_CRIS_16_DTPREL:
2047                       (*_bfd_error_handler)
2048                         (_("(thread-local data too big for -fpic or"
2049                            " -msmall-tls: recompile with -fPIC or"
2050                            " -mno-small-tls)"));
2051                       break;
2052
2053                       /* No known cause for overflow for other relocs.  */
2054                     default:
2055                       break;
2056                     }
2057                 }
2058               break;
2059
2060             case bfd_reloc_undefined:
2061               r = info->callbacks->undefined_symbol
2062                 (info, symname, input_bfd, input_section, rel->r_offset,
2063                  TRUE);
2064               break;
2065
2066             case bfd_reloc_outofrange:
2067               msg = _("internal error: out of range error");
2068               break;
2069
2070             case bfd_reloc_notsupported:
2071               msg = _("internal error: unsupported relocation error");
2072               break;
2073
2074             case bfd_reloc_dangerous:
2075               msg = _("internal error: dangerous relocation");
2076               break;
2077
2078             default:
2079               msg = _("internal error: unknown error");
2080               break;
2081             }
2082
2083           if (msg)
2084             r = info->callbacks->warning
2085               (info, msg, symname, input_bfd, input_section, rel->r_offset);
2086
2087           if (! r)
2088             return FALSE;
2089         }
2090     }
2091
2092   return TRUE;
2093 }
2094 \f
2095 /* Finish up dynamic symbol handling.  We set the contents of various
2096    dynamic sections here.  */
2097
2098 static bfd_boolean
2099 elf_cris_finish_dynamic_symbol (output_bfd, info, h, sym)
2100      bfd *output_bfd;
2101      struct bfd_link_info *info;
2102      struct elf_link_hash_entry *h;
2103      Elf_Internal_Sym *sym;
2104 {
2105   bfd *dynobj;
2106
2107   /* Where in the plt entry to put values.  */
2108   int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
2109
2110   /* What offset to add to the distance to the first PLT entry for the
2111      value at plt_off3.   */
2112   int plt_off3_value_bias = 4;
2113
2114   /* Where in the PLT entry the call-dynlink-stub is (happens to be same
2115      for PIC and non-PIC for v32 and pre-v32).  */
2116   int plt_stub_offset = 8;
2117   int plt_entry_size = PLT_ENTRY_SIZE;
2118   const bfd_byte *plt_entry = elf_cris_plt_entry;
2119   const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
2120
2121   /* Adjust the various PLT entry offsets.  */
2122   if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2123     {
2124       plt_off2 = 14;
2125       plt_off3 = 20;
2126       plt_off3_value_bias = -2;
2127       plt_stub_offset = 12;
2128       plt_entry_size = PLT_ENTRY_SIZE_V32;
2129       plt_entry = elf_cris_plt_entry_v32;
2130       plt_pic_entry = elf_cris_pic_plt_entry_v32;
2131     }
2132
2133   dynobj = elf_hash_table (info)->dynobj;
2134
2135   if (h->plt.offset != (bfd_vma) -1)
2136     {
2137       asection *splt;
2138       asection *sgotplt;
2139       asection *sgot;
2140       asection *srela;
2141       bfd_vma got_base;
2142
2143       bfd_vma gotplt_offset
2144         = elf_cris_hash_entry (h)->gotplt_offset;
2145       Elf_Internal_Rela rela;
2146       bfd_byte *loc;
2147       bfd_boolean has_gotplt = gotplt_offset != 0;
2148
2149       /* Get the index in the .rela.plt relocations for the .got.plt
2150          entry that corresponds to this symbol.
2151          We have to count backwards here, and the result is only valid
2152          as an index into .rela.plt.  We also have to undo the effect
2153          of the R_CRIS_DTPMOD entry at .got index 3 (offset 12 into
2154          .got.plt) for which gotplt_offset is adjusted, because while
2155          that entry goes into .got.plt, its relocation goes into
2156          .rela.got, not .rela.plt.  (It's not PLT-specific; not to be
2157          processed as part of the runtime lazy .rela.plt relocation).
2158          FIXME: There be literal constants here...  */
2159       bfd_vma rela_plt_index
2160         = (elf_cris_hash_table (info)->dtpmod_refcount != 0
2161            ? gotplt_offset/4 - 2 - 3 : gotplt_offset/4 - 3);
2162
2163       /* Get the offset into the .got table of the entry that corresponds
2164          to this function.  Note that we embed knowledge that "incoming"
2165          .got goes after .got.plt in the output without padding (pointer
2166          aligned).  However, that knowledge is present in several other
2167          places too.  */
2168       bfd_vma got_offset
2169         = (has_gotplt
2170            ? gotplt_offset
2171            : h->got.offset + elf_cris_hash_table(info)->next_gotplt_entry);
2172
2173       /* This symbol has an entry in the procedure linkage table.  Set it
2174          up.  */
2175
2176       BFD_ASSERT (h->dynindx != -1);
2177
2178       splt = bfd_get_section_by_name (dynobj, ".plt");
2179       sgot = bfd_get_section_by_name (dynobj, ".got");
2180       sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2181       srela = bfd_get_section_by_name (dynobj, ".rela.plt");
2182       BFD_ASSERT (splt != NULL && sgotplt != NULL
2183                   && (! has_gotplt || srela != NULL));
2184
2185       got_base = sgotplt->output_section->vma + sgotplt->output_offset;
2186
2187       /* Fill in the entry in the procedure linkage table.  */
2188       if (! info->shared)
2189         {
2190           memcpy (splt->contents + h->plt.offset, plt_entry,
2191                   plt_entry_size);
2192
2193           /* We need to enter the absolute address of the GOT entry here.  */
2194           bfd_put_32 (output_bfd, got_base + got_offset,
2195                       splt->contents + h->plt.offset + plt_off1);
2196         }
2197       else
2198         {
2199           memcpy (splt->contents + h->plt.offset, plt_pic_entry,
2200                   plt_entry_size);
2201           bfd_put_32 (output_bfd, got_offset,
2202                       splt->contents + h->plt.offset + plt_off1);
2203         }
2204
2205       /* Fill in the plt entry and make a relocation, if this is a "real"
2206          PLT entry.  */
2207       if (has_gotplt)
2208         {
2209           /* Fill in the offset to the reloc table.  */
2210           bfd_put_32 (output_bfd,
2211                       rela_plt_index * sizeof (Elf32_External_Rela),
2212                       splt->contents + h->plt.offset + plt_off2);
2213
2214           /* Fill in the offset to the first PLT entry, where to "jump".  */
2215           bfd_put_32 (output_bfd,
2216                       - (h->plt.offset + plt_off3 + plt_off3_value_bias),
2217                       splt->contents + h->plt.offset + plt_off3);
2218
2219           /* Fill in the entry in the global offset table with the address of
2220              the relocating stub.  */
2221           bfd_put_32 (output_bfd,
2222                       (splt->output_section->vma
2223                        + splt->output_offset
2224                        + h->plt.offset
2225                        + plt_stub_offset),
2226                       sgotplt->contents + got_offset);
2227
2228           /* Fill in the entry in the .rela.plt section.  */
2229           rela.r_offset = (sgotplt->output_section->vma
2230                            + sgotplt->output_offset
2231                            + got_offset);
2232           rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
2233           rela.r_addend = 0;
2234           loc = srela->contents + rela_plt_index * sizeof (Elf32_External_Rela);
2235           bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2236         }
2237
2238       if (!h->def_regular)
2239         {
2240           /* Mark the symbol as undefined, rather than as defined in
2241              the .plt section.  Leave the value alone.  */
2242           sym->st_shndx = SHN_UNDEF;
2243
2244           /* FIXME: From elf32-sparc.c 2001-02-19 (1.18).  I still don't
2245              know whether resetting the value is significant; if it really
2246              is, rather than a quirk or bug in the sparc port, then I
2247              believe we'd see this elsewhere.  */
2248           /* If the symbol is weak, we do need to clear the value.
2249              Otherwise, the PLT entry would provide a definition for
2250              the symbol even if the symbol wasn't defined anywhere,
2251              and so the symbol would never be NULL.  */
2252           if (!h->ref_regular_nonweak)
2253             sym->st_value = 0;
2254         }
2255     }
2256
2257   /* For an ordinary program, we emit .got relocs only for symbols that
2258      are in the dynamic-symbols table and are either defined by the
2259      program or are undefined weak symbols, or are function symbols
2260      where we do not output a PLT: the PLT reloc was output above and all
2261      references to the function symbol are redirected to the PLT.  */
2262   if (h->got.offset != (bfd_vma) -1
2263       && (elf_cris_hash_entry (h)->reg_got_refcount > 0)
2264       && (info->shared
2265           || (h->dynindx != -1
2266               && h->plt.offset == (bfd_vma) -1
2267               && !h->def_regular
2268               && h->root.type != bfd_link_hash_undefweak)))
2269     {
2270       asection *sgot;
2271       asection *srela;
2272       Elf_Internal_Rela rela;
2273       bfd_byte *loc;
2274       bfd_byte *where;
2275
2276       /* This symbol has an entry in the global offset table.  Set it up.  */
2277
2278       sgot = bfd_get_section_by_name (dynobj, ".got");
2279       srela = bfd_get_section_by_name (dynobj, ".rela.got");
2280       BFD_ASSERT (sgot != NULL && srela != NULL);
2281
2282       rela.r_offset = (sgot->output_section->vma
2283                        + sgot->output_offset
2284                        + (h->got.offset &~ (bfd_vma) 1));
2285
2286       /* If this is a static link, or it is a -Bsymbolic link and the
2287          symbol is defined locally or was forced to be local because
2288          of a version file, we just want to emit a RELATIVE reloc.
2289          The entry in the global offset table will already have been
2290          initialized in the relocate_section function.  */
2291       where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
2292       if (! elf_hash_table (info)->dynamic_sections_created
2293           || (info->shared
2294               && (info->symbolic || h->dynindx == -1)
2295               && h->def_regular))
2296         {
2297           rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
2298           rela.r_addend = bfd_get_signed_32 (output_bfd, where);
2299         }
2300       else
2301         {
2302           bfd_put_32 (output_bfd, (bfd_vma) 0, where);
2303           rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
2304           rela.r_addend = 0;
2305         }
2306
2307       loc = srela->contents;
2308       loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
2309       bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2310     }
2311
2312   if (h->needs_copy)
2313     {
2314       asection *s;
2315       Elf_Internal_Rela rela;
2316       bfd_byte *loc;
2317
2318       /* This symbol needs a copy reloc.  Set it up.  */
2319
2320       BFD_ASSERT (h->dynindx != -1
2321                   && (h->root.type == bfd_link_hash_defined
2322                       || h->root.type == bfd_link_hash_defweak));
2323
2324       s = bfd_get_section_by_name (h->root.u.def.section->owner,
2325                                    ".rela.bss");
2326       BFD_ASSERT (s != NULL);
2327
2328       rela.r_offset = (h->root.u.def.value
2329                        + h->root.u.def.section->output_section->vma
2330                        + h->root.u.def.section->output_offset);
2331       rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
2332       rela.r_addend = 0;
2333       loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
2334       bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2335     }
2336
2337   /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute.  */
2338   if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2339       || h == elf_hash_table (info)->hgot)
2340     sym->st_shndx = SHN_ABS;
2341
2342   return TRUE;
2343 }
2344 \f
2345 /* Finish up the dynamic sections.  Do *not* emit relocs here, as their
2346    offsets were changed, as part of -z combreloc handling, from those we
2347    computed.  */
2348
2349 static bfd_boolean
2350 elf_cris_finish_dynamic_sections (output_bfd, info)
2351      bfd *output_bfd;
2352      struct bfd_link_info *info;
2353 {
2354   bfd *dynobj;
2355   asection *sgot;
2356   asection *sdyn;
2357
2358   dynobj = elf_hash_table (info)->dynobj;
2359
2360   sgot = bfd_get_section_by_name (dynobj, ".got.plt");
2361   BFD_ASSERT (sgot != NULL);
2362   sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2363
2364   if (elf_hash_table (info)->dynamic_sections_created)
2365     {
2366       asection *splt;
2367       Elf32_External_Dyn *dyncon, *dynconend;
2368
2369       splt = bfd_get_section_by_name (dynobj, ".plt");
2370       BFD_ASSERT (splt != NULL && sdyn != NULL);
2371
2372       dyncon = (Elf32_External_Dyn *) sdyn->contents;
2373       dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
2374       for (; dyncon < dynconend; dyncon++)
2375         {
2376           Elf_Internal_Dyn dyn;
2377           asection *s;
2378
2379           bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2380
2381           switch (dyn.d_tag)
2382             {
2383             default:
2384               break;
2385
2386             case DT_PLTGOT:
2387               s = bfd_get_section_by_name (output_bfd, ".got");
2388               BFD_ASSERT (s != NULL);
2389               dyn.d_un.d_ptr = s->vma;
2390               bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2391               break;
2392
2393             case DT_JMPREL:
2394               /* Yes, we *can* have a .plt and no .plt.rela, for instance
2395                  if all symbols are found in the .got (not .got.plt).  */
2396               s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2397               dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
2398               bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2399               break;
2400
2401             case DT_PLTRELSZ:
2402               s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2403               if (s == NULL)
2404                 dyn.d_un.d_val = 0;
2405               else
2406                 dyn.d_un.d_val = s->size;
2407               bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2408               break;
2409
2410             case DT_RELASZ:
2411               /* The procedure linkage table relocs (DT_JMPREL) should
2412                  not be included in the overall relocs (DT_RELA).
2413                  Therefore, we override the DT_RELASZ entry here to
2414                  make it not include the JMPREL relocs.  Since the
2415                  linker script arranges for .rela.plt to follow all
2416                  other relocation sections, we don't have to worry
2417                  about changing the DT_RELA entry.  */
2418               s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2419               if (s != NULL)
2420                 dyn.d_un.d_val -= s->size;
2421               bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2422               break;
2423             }
2424         }
2425
2426       /* Fill in the first entry in the procedure linkage table.  */
2427       if (splt->size > 0)
2428         {
2429           if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2430             {
2431               if (info->shared)
2432                 memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
2433                         PLT_ENTRY_SIZE_V32);
2434               else
2435                 {
2436                   memcpy (splt->contents, elf_cris_plt0_entry_v32,
2437                           PLT_ENTRY_SIZE_V32);
2438                   bfd_put_32 (output_bfd,
2439                               sgot->output_section->vma
2440                               + sgot->output_offset + 4,
2441                               splt->contents + 4);
2442
2443                   elf_section_data (splt->output_section)->this_hdr.sh_entsize
2444                     = PLT_ENTRY_SIZE_V32;
2445                 }
2446             }
2447           else
2448             {
2449               if (info->shared)
2450                 memcpy (splt->contents, elf_cris_pic_plt0_entry,
2451                         PLT_ENTRY_SIZE);
2452               else
2453                 {
2454                   memcpy (splt->contents, elf_cris_plt0_entry,
2455                           PLT_ENTRY_SIZE);
2456                   bfd_put_32 (output_bfd,
2457                               sgot->output_section->vma
2458                               + sgot->output_offset + 4,
2459                               splt->contents + 6);
2460                   bfd_put_32 (output_bfd,
2461                               sgot->output_section->vma
2462                               + sgot->output_offset + 8,
2463                               splt->contents + 14);
2464
2465                   elf_section_data (splt->output_section)->this_hdr.sh_entsize
2466                     = PLT_ENTRY_SIZE;
2467                 }
2468             }
2469         }
2470     }
2471
2472   /* Fill in the first three entries in the global offset table.  */
2473   if (sgot->size > 0)
2474     {
2475       if (sdyn == NULL)
2476         bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2477       else
2478         bfd_put_32 (output_bfd,
2479                     sdyn->output_section->vma + sdyn->output_offset,
2480                     sgot->contents);
2481       bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
2482       bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
2483     }
2484
2485   elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2486
2487   return TRUE;
2488 }
2489 \f
2490 /* Return the section that should be marked against GC for a given
2491    relocation.  */
2492
2493 static asection *
2494 cris_elf_gc_mark_hook (asection *sec,
2495                        struct bfd_link_info *info,
2496                        Elf_Internal_Rela *rel,
2497                        struct elf_link_hash_entry *h,
2498                        Elf_Internal_Sym *sym)
2499 {
2500   enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
2501   if (h != NULL)
2502     switch (r_type)
2503       {
2504       case R_CRIS_GNU_VTINHERIT:
2505       case R_CRIS_GNU_VTENTRY:
2506         return NULL;
2507
2508       default:
2509         break;
2510       }
2511
2512   return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2513 }
2514
2515 /* Update the got entry reference counts for the section being removed.  */
2516
2517 static bfd_boolean
2518 cris_elf_gc_sweep_hook (bfd *abfd,
2519                         struct bfd_link_info *info,
2520                         asection *sec,
2521                         const Elf_Internal_Rela *relocs)
2522 {
2523   Elf_Internal_Shdr *symtab_hdr;
2524   struct elf_link_hash_entry **sym_hashes;
2525   bfd_signed_vma *local_got_refcounts;
2526   const Elf_Internal_Rela *rel, *relend;
2527   bfd *dynobj;
2528   asection *sgot;
2529   asection *srelgot;
2530
2531   if (info->relocatable)
2532     return TRUE;
2533
2534   dynobj = elf_hash_table (info)->dynobj;
2535   if (dynobj == NULL)
2536     return TRUE;
2537
2538   symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2539   sym_hashes = elf_sym_hashes (abfd);
2540   local_got_refcounts = elf_local_got_refcounts (abfd);
2541
2542   sgot = bfd_get_section_by_name (dynobj, ".got");
2543   srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2544
2545   relend = relocs + sec->reloc_count;
2546   for (rel = relocs; rel < relend; rel++)
2547     {
2548       unsigned long r_symndx;
2549       struct elf_link_hash_entry *h = NULL;
2550       bfd_signed_vma got_element_size = 4;
2551       bfd_signed_vma *specific_refcount = NULL;
2552       enum elf_cris_reloc_type r_type;
2553
2554       r_symndx = ELF32_R_SYM (rel->r_info);
2555       if (r_symndx >= symtab_hdr->sh_info)
2556         {
2557           h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2558           while (h->root.type == bfd_link_hash_indirect
2559                  || h->root.type == bfd_link_hash_warning)
2560             h = (struct elf_link_hash_entry *) h->root.u.i.link;
2561         }
2562
2563       r_type = ELF32_R_TYPE (rel->r_info);
2564       switch (r_type)
2565         {
2566         case R_CRIS_32_GOT:
2567         case R_CRIS_16_GOT:
2568         case R_CRIS_16_GOTPLT:
2569         case R_CRIS_32_GOTPLT:
2570           specific_refcount = h != NULL
2571             ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount
2572             : &local_got_refcounts[LGOT_REG_NDX (r_symndx)];
2573           break;
2574
2575         case R_CRIS_32_GD:
2576         case R_CRIS_32_GOT_GD:
2577         case R_CRIS_16_GOT_GD:
2578           got_element_size = 8;
2579           specific_refcount = h != NULL
2580             ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount
2581             : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)];
2582           break;
2583
2584         case R_CRIS_32_IE:
2585         case R_CRIS_16_GOT_TPREL:
2586         case R_CRIS_32_GOT_TPREL:
2587           specific_refcount = h != NULL
2588             ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount
2589             : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)];
2590           break;
2591
2592         default:
2593           break;
2594         }
2595
2596       switch (r_type)
2597         {
2598         case R_CRIS_32_IE:
2599         case R_CRIS_32_GD:
2600         case R_CRIS_16_GOT_TPREL:
2601         case R_CRIS_32_GOT_TPREL:
2602         case R_CRIS_32_GOT_GD:
2603         case R_CRIS_16_GOT_GD:
2604         case R_CRIS_16_GOT:
2605         case R_CRIS_32_GOT:
2606           if (h != NULL)
2607             {
2608               /* If the counters are 0 when we got here, we've
2609                  miscounted somehow somewhere, an internal error.  */
2610               BFD_ASSERT (h->got.refcount > 0);
2611               --h->got.refcount;
2612
2613               BFD_ASSERT (*specific_refcount > 0);
2614               --*specific_refcount;
2615               if (*specific_refcount == 0)
2616                 {
2617                   /* We don't need the .got entry any more.  */
2618                   sgot->size -= got_element_size;
2619                   srelgot->size -= sizeof (Elf32_External_Rela);
2620                 }
2621               break;
2622             }
2623
2624         local_got_reloc:
2625           if (local_got_refcounts != NULL)
2626             {
2627               /* If the counters are 0 when we got here, we've
2628                  miscounted somehow somewhere, an internal error.  */
2629               BFD_ASSERT (local_got_refcounts[r_symndx] > 0);
2630               --local_got_refcounts[r_symndx];
2631
2632               BFD_ASSERT (*specific_refcount > 0);
2633               --*specific_refcount;
2634               if (*specific_refcount == 0)
2635                 {
2636                   /* We don't need the .got entry any more.  */
2637                   sgot->size -= got_element_size;
2638                   if (info->shared)
2639                     srelgot->size -= sizeof (Elf32_External_Rela);
2640                 }
2641             }
2642           break;
2643
2644         case R_CRIS_16_GOTPLT:
2645         case R_CRIS_32_GOTPLT:
2646           /* For local symbols, treat these like GOT relocs.  */
2647           if (h == NULL)
2648             goto local_got_reloc;
2649           /* Fall through.  */
2650
2651         case R_CRIS_32_PLT_GOTREL:
2652           /* FIXME: We don't garbage-collect away the .got section.  */
2653           if (local_got_refcounts != NULL)
2654             local_got_refcounts[-1]--;
2655           /* Fall through.  */
2656
2657         case R_CRIS_8_PCREL:
2658         case R_CRIS_16_PCREL:
2659         case R_CRIS_32_PCREL:
2660         case R_CRIS_32_PLT_PCREL:
2661           if (h != NULL)
2662             {
2663               if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2664                   && h->plt.refcount > 0)
2665                 --h->plt.refcount;
2666             }
2667           break;
2668
2669         case R_CRIS_32_DTPREL:
2670         case R_CRIS_16_DTPREL:
2671           elf_cris_hash_table (info)->dtpmod_refcount--;
2672           if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
2673             elf_cris_hash_table (info)->next_gotplt_entry -= 8;
2674           BFD_ASSERT (local_got_refcounts != NULL);
2675           local_got_refcounts[-1]--;
2676           break;
2677
2678         default:
2679           break;
2680         }
2681     }
2682
2683   return TRUE;
2684 }
2685
2686 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2687    entry but we found we will not create any.  Called when we find we will
2688    not have any PLT for this symbol, by for example
2689    elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2690    or elf_cris_size_dynamic_sections if no dynamic sections will be
2691    created (we're only linking static objects).  */
2692
2693 static bfd_boolean
2694 elf_cris_adjust_gotplt_to_got (h, p)
2695      struct elf_cris_link_hash_entry *h;
2696      PTR p;
2697 {
2698   struct bfd_link_info *info = (struct bfd_link_info *) p;
2699
2700   if (h->root.root.type == bfd_link_hash_warning)
2701     h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
2702
2703   /* If nobody wanted a GOTPLT with this symbol, we're done.  */
2704   if (h->gotplt_refcount <= 0)
2705     return TRUE;
2706
2707   if (h->reg_got_refcount > 0)
2708     {
2709       /* There's a GOT entry for this symbol.  Just adjust the refcounts.
2710          Probably not necessary at this stage, but keeping them accurate
2711          helps avoiding surprises later.  */
2712       h->root.got.refcount += h->gotplt_refcount;
2713       h->reg_got_refcount += h->gotplt_refcount;
2714       h->gotplt_refcount = 0;
2715     }
2716   else
2717     {
2718       /* No GOT entry for this symbol.  We need to create one.  */
2719       bfd *dynobj = elf_hash_table (info)->dynobj;
2720       asection *sgot;
2721       asection *srelgot;
2722
2723       BFD_ASSERT (dynobj != NULL);
2724       sgot = bfd_get_section_by_name (dynobj, ".got");
2725       srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2726
2727       /* Put accurate refcounts there.  */
2728       h->root.got.refcount += h->gotplt_refcount;
2729       h->reg_got_refcount = h->gotplt_refcount;
2730
2731       h->gotplt_refcount = 0;
2732
2733       /* We always have a .got and a .rela.got section if there were
2734          GOTPLT relocs in input.  */
2735       BFD_ASSERT (sgot != NULL && srelgot != NULL);
2736
2737       /* Allocate space in the .got section.  */
2738       sgot->size += 4;
2739
2740       /* Allocate relocation space.  */
2741       srelgot->size += sizeof (Elf32_External_Rela);
2742     }
2743
2744   return TRUE;
2745 }
2746
2747 /* Try to fold PLT entries with GOT entries.  There are two cases when we
2748    want to do this:
2749
2750    - When all PLT references are GOTPLT references, and there are GOT
2751      references, and this is not the executable.  We don't have to
2752      generate a PLT at all.
2753
2754    - When there are both (ordinary) PLT references and GOT references,
2755      and this isn't the executable.
2756      We want to make the PLT reference use the ordinary GOT entry rather
2757      than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2758      since the GOT entry will have to be resolved at startup anyway.
2759
2760    Though the latter case is handled when room for the PLT is allocated,
2761    not here.
2762
2763    By folding into the GOT, we may need a round-trip to a PLT in the
2764    executable for calls, a loss in performance.  Still, losing a
2765    reloc is a win in size and at least in start-up time.
2766
2767    Note that this function is called before symbols are forced local by
2768    version scripts.  The differing cases are handled by
2769    elf_cris_hide_symbol.  */
2770
2771 static bfd_boolean
2772 elf_cris_try_fold_plt_to_got (h, p)
2773      struct elf_cris_link_hash_entry *h;
2774      PTR p;
2775 {
2776   struct bfd_link_info *info = (struct bfd_link_info *) p;
2777
2778   /* If there are no GOT references for this symbol, we can't fold any
2779      other reference so there's nothing to do.  Likewise if there are no
2780      PLT references; GOTPLT references included.  */
2781   if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
2782     return TRUE;
2783
2784   /* GOTPLT relocs are supposed to be included into the PLT refcount.  */
2785   BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2786
2787   if (h->gotplt_refcount == h->root.plt.refcount)
2788     {
2789       /* The only PLT references are GOTPLT references, and there are GOT
2790          references.  Convert PLT to GOT references.  */
2791       if (! elf_cris_adjust_gotplt_to_got (h, info))
2792         return FALSE;
2793
2794       /* Clear the PLT references, so no PLT will be created.  */
2795       h->root.plt.offset = (bfd_vma) -1;
2796     }
2797
2798   return TRUE;
2799 }
2800
2801 /* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2802    to use a GOT entry (and create one) rather than requiring a GOTPLT
2803    entry.  */
2804
2805 static void
2806 elf_cris_hide_symbol (info, h, force_local)
2807      struct bfd_link_info *info;
2808      struct elf_link_hash_entry *h;
2809      bfd_boolean force_local;
2810 {
2811   elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2812
2813   _bfd_elf_link_hash_hide_symbol (info, h, force_local);
2814 }
2815
2816 /* Adjust a symbol defined by a dynamic object and referenced by a
2817    regular object.  The current definition is in some section of the
2818    dynamic object, but we're not including those sections.  We have to
2819    change the definition to something the rest of the link can
2820    understand.  */
2821
2822 static bfd_boolean
2823 elf_cris_adjust_dynamic_symbol (info, h)
2824      struct bfd_link_info *info;
2825      struct elf_link_hash_entry *h;
2826 {
2827   bfd *dynobj;
2828   asection *s;
2829   bfd_size_type plt_entry_size;
2830
2831   dynobj = elf_hash_table (info)->dynobj;
2832
2833   /* Make sure we know what is going on here.  */
2834   BFD_ASSERT (dynobj != NULL
2835               && (h->needs_plt
2836                   || h->u.weakdef != NULL
2837                   || (h->def_dynamic
2838                       && h->ref_regular
2839                       && !h->def_regular)));
2840
2841   plt_entry_size
2842     = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2843        ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2844
2845   /* If this is a function, put it in the procedure linkage table.  We
2846      will fill in the contents of the procedure linkage table later,
2847      when we know the address of the .got section.  */
2848   if (h->type == STT_FUNC
2849       || h->needs_plt)
2850     {
2851       /* If we link a program (not a DSO), we'll get rid of unnecessary
2852          PLT entries; we point to the actual symbols -- even for pic
2853          relocs, because a program built with -fpic should have the same
2854          result as one built without -fpic, specifically considering weak
2855          symbols.
2856          FIXME: m68k and i386 differ here, for unclear reasons.  */
2857       if (! info->shared
2858           && !h->def_dynamic)
2859         {
2860           /* This case can occur if we saw a PLT reloc in an input file,
2861              but the symbol was not defined by a dynamic object.  In such
2862              a case, we don't actually need to build a procedure linkage
2863              table, and we can just do an absolute or PC reloc instead, or
2864              change a .got.plt index to a .got index for GOTPLT relocs.  */
2865           BFD_ASSERT (h->needs_plt);
2866           h->needs_plt = 0;
2867           h->plt.offset = (bfd_vma) -1;
2868           return
2869             elf_cris_adjust_gotplt_to_got ((struct
2870                                             elf_cris_link_hash_entry *) h,
2871                                            info);
2872         }
2873
2874       /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2875          where a pointer-equivalent symbol was unimportant (i.e. more
2876          like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2877          of the PLT.  We can't for the executable, because the GOT
2878          entries will point to the PLT there (and be constant).  */
2879       if (info->shared
2880           && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2881                                             h, info))
2882         return FALSE;
2883
2884       /* GC or folding may have rendered this entry unused.  */
2885       if (h->plt.refcount <= 0)
2886         {
2887           h->needs_plt = 0;
2888           h->plt.offset = (bfd_vma) -1;
2889           return TRUE;
2890         }
2891
2892       /* Make sure this symbol is output as a dynamic symbol.  */
2893       if (h->dynindx == -1)
2894         {
2895           if (! bfd_elf_link_record_dynamic_symbol (info, h))
2896             return FALSE;
2897         }
2898
2899       s = bfd_get_section_by_name (dynobj, ".plt");
2900       BFD_ASSERT (s != NULL);
2901
2902       /* If this is the first .plt entry, make room for the special
2903          first entry.  */
2904       if (s->size == 0)
2905         s->size += plt_entry_size;
2906
2907       /* If this symbol is not defined in a regular file, and we are
2908          not generating a shared library, then set the symbol to this
2909          location in the .plt.  */
2910       if (!info->shared
2911           && !h->def_regular)
2912         {
2913           h->root.u.def.section = s;
2914           h->root.u.def.value = s->size;
2915         }
2916
2917       /* If there's already a GOT entry, use that, not a .got.plt.  A
2918          GOT field still has a reference count when we get here; it's
2919          not yet changed to an offset.  We can't do this for an
2920          executable, because then the reloc associated with the PLT
2921          would get a non-PLT reloc pointing to the PLT.  FIXME: Move
2922          this to elf_cris_try_fold_plt_to_got.  */
2923       if (info->shared && h->got.refcount > 0)
2924         {
2925           h->got.refcount += h->plt.refcount;
2926
2927           /* Mark the PLT offset to use the GOT entry by setting the low
2928              bit in the plt offset; it is always a multiple of
2929              plt_entry_size (which is at least a multiple of 2).  */
2930           BFD_ASSERT ((s->size % plt_entry_size) == 0);
2931
2932           /* Change the PLT refcount to an offset.  */
2933           h->plt.offset = s->size;
2934
2935           /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2936              that the got entry should be used instead.  */
2937           BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2938                        h)->gotplt_offset == 0);
2939
2940           /* Make room for this entry.  */
2941           s->size += plt_entry_size;
2942
2943           return TRUE;
2944         }
2945
2946       /* No GOT reference for this symbol; prepare for an ordinary PLT.  */
2947       h->plt.offset = s->size;
2948
2949       /* Make room for this entry.  */
2950       s->size += plt_entry_size;
2951
2952       /* We also need to make an entry in the .got.plt section, which
2953          will be placed in the .got section by the linker script.  */
2954       ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
2955         = elf_cris_hash_table (info)->next_gotplt_entry;
2956       elf_cris_hash_table (info)->next_gotplt_entry += 4;
2957
2958       s = bfd_get_section_by_name (dynobj, ".got.plt");
2959       BFD_ASSERT (s != NULL);
2960       s->size += 4;
2961
2962       /* We also need to make an entry in the .rela.plt section.  */
2963
2964       s = bfd_get_section_by_name (dynobj, ".rela.plt");
2965       BFD_ASSERT (s != NULL);
2966       s->size += sizeof (Elf32_External_Rela);
2967
2968       return TRUE;
2969     }
2970
2971   /* Reinitialize the plt offset now that it is not used as a reference
2972      count any more.  */
2973   h->plt.offset = (bfd_vma) -1;
2974
2975   /* If this is a weak symbol, and there is a real definition, the
2976      processor independent code will have arranged for us to see the
2977      real definition first, and we can just use the same value.  */
2978   if (h->u.weakdef != NULL)
2979     {
2980       BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2981                   || h->u.weakdef->root.type == bfd_link_hash_defweak);
2982       h->root.u.def.section = h->u.weakdef->root.u.def.section;
2983       h->root.u.def.value = h->u.weakdef->root.u.def.value;
2984       return TRUE;
2985     }
2986
2987   /* This is a reference to a symbol defined by a dynamic object which
2988      is not a function.  */
2989
2990   /* If we are creating a shared library, we must presume that the
2991      only references to the symbol are via the global offset table.
2992      For such cases we need not do anything here; the relocations will
2993      be handled correctly by relocate_section.  */
2994   if (info->shared)
2995     return TRUE;
2996
2997   /* If there are no references to this symbol that do not use the
2998      GOT, we don't need to generate a copy reloc.  */
2999   if (!h->non_got_ref)
3000     return TRUE;
3001
3002   if (h->size == 0)
3003     {
3004       (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
3005                              h->root.root.string);
3006       return TRUE;
3007     }
3008
3009   /* We must allocate the symbol in our .dynbss section, which will
3010      become part of the .bss section of the executable.  There will be
3011      an entry for this symbol in the .dynsym section.  The dynamic
3012      object will contain position independent code, so all references
3013      from the dynamic object to this symbol will go through the global
3014      offset table.  The dynamic linker will use the .dynsym entry to
3015      determine the address it must put in the global offset table, so
3016      both the dynamic object and the regular object will refer to the
3017      same memory location for the variable.  */
3018
3019   s = bfd_get_section_by_name (dynobj, ".dynbss");
3020   BFD_ASSERT (s != NULL);
3021
3022   /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
3023      copy the initial value out of the dynamic object and into the
3024      runtime process image.  We need to remember the offset into the
3025      .rela.bss section we are going to use.  */
3026   if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3027     {
3028       asection *srel;
3029
3030       srel = bfd_get_section_by_name (dynobj, ".rela.bss");
3031       BFD_ASSERT (srel != NULL);
3032       srel->size += sizeof (Elf32_External_Rela);
3033       h->needs_copy = 1;
3034     }
3035
3036   return _bfd_elf_adjust_dynamic_copy (h, s);
3037 }
3038
3039 /* Adjust our "subclass" elements for an indirect symbol.  */
3040
3041 static void
3042 elf_cris_copy_indirect_symbol (struct bfd_link_info *info,
3043                                struct elf_link_hash_entry *dir,
3044                                struct elf_link_hash_entry *ind)
3045 {
3046   struct elf_cris_link_hash_entry *edir, *eind;
3047
3048   edir = (struct elf_cris_link_hash_entry *) dir;
3049   eind = (struct elf_cris_link_hash_entry *) ind;
3050
3051   /* Only indirect symbols are replaced; we're not interested in
3052      updating any of EIND's fields for other symbols.  */
3053   if (eind->root.root.type != bfd_link_hash_indirect)
3054     return;
3055
3056   BFD_ASSERT (edir->pcrel_relocs_copied == NULL);
3057   BFD_ASSERT (edir->gotplt_offset == 0 || eind->gotplt_offset == 0);
3058
3059 #define XMOVOPZ(F, OP, Z) edir->F OP eind->F; eind->F = Z
3060 #define XMOVE(F) XMOVOPZ (F, +=, 0)
3061   XMOVOPZ (pcrel_relocs_copied, =, NULL);
3062   XMOVE (gotplt_refcount);
3063   XMOVE (gotplt_offset);
3064   XMOVE (reg_got_refcount);
3065   XMOVE (tprel_refcount);
3066   XMOVE (dtp_refcount);
3067 #undef XMOVE
3068 #undef XMOVOPZ
3069
3070   _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3071 }
3072
3073 /* Look through the relocs for a section during the first phase.  */
3074
3075 static bfd_boolean
3076 cris_elf_check_relocs (abfd, info, sec, relocs)
3077      bfd *abfd;
3078      struct bfd_link_info *info;
3079      asection *sec;
3080      const Elf_Internal_Rela *relocs;
3081 {
3082   bfd *dynobj;
3083   Elf_Internal_Shdr *symtab_hdr;
3084   struct elf_link_hash_entry **sym_hashes;
3085   bfd_signed_vma *local_got_refcounts;
3086   const Elf_Internal_Rela *rel;
3087   const Elf_Internal_Rela *rel_end;
3088   asection *sgot;
3089   asection *srelgot;
3090   asection *sreloc;
3091
3092   if (info->relocatable)
3093     return TRUE;
3094
3095   dynobj = elf_hash_table (info)->dynobj;
3096   symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3097   sym_hashes = elf_sym_hashes (abfd);
3098   local_got_refcounts = elf_local_got_refcounts (abfd);
3099
3100   sgot = NULL;
3101   srelgot = NULL;
3102   sreloc = NULL;
3103
3104   rel_end = relocs + sec->reloc_count;
3105   for (rel = relocs; rel < rel_end; rel++)
3106     {
3107       struct elf_link_hash_entry *h;
3108       unsigned long r_symndx;
3109       enum elf_cris_reloc_type r_type;
3110       bfd_signed_vma got_element_size = 4;
3111       unsigned long r_symndx_lgot = INT_MAX;
3112
3113       r_symndx = ELF32_R_SYM (rel->r_info);
3114       if (r_symndx < symtab_hdr->sh_info)
3115         {
3116           h = NULL;
3117           r_symndx_lgot = LGOT_REG_NDX (r_symndx);
3118         }
3119       else
3120         {
3121           h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3122           while (h->root.type == bfd_link_hash_indirect
3123                  || h->root.type == bfd_link_hash_warning)
3124             h = (struct elf_link_hash_entry *) h->root.u.i.link;
3125         }
3126
3127       r_type = ELF32_R_TYPE (rel->r_info);
3128
3129       /* Some relocs require linker-created sections; we need to hang them
3130          on the first input bfd we found that contained dynamic relocs.  */
3131       switch (r_type)
3132         {
3133         case R_CRIS_16_DTPREL:
3134         case R_CRIS_32_DTPREL:
3135           /* The first .got.plt entry is right after the R_CRIS_DTPMOD
3136              entry at index 3. */
3137           if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
3138             elf_cris_hash_table (info)->next_gotplt_entry += 8;
3139           elf_cris_hash_table (info)->dtpmod_refcount++;
3140           /* Fall through.  */
3141
3142         case R_CRIS_32_IE:
3143         case R_CRIS_32_GD:
3144         case R_CRIS_16_GOT_GD:
3145         case R_CRIS_32_GOT_GD:
3146         case R_CRIS_32_GOT_TPREL:
3147         case R_CRIS_16_GOT_TPREL:
3148         case R_CRIS_16_GOT:
3149         case R_CRIS_32_GOT:
3150         case R_CRIS_32_GOTREL:
3151         case R_CRIS_32_PLT_GOTREL:
3152         case R_CRIS_32_PLT_PCREL:
3153         case R_CRIS_16_GOTPLT:
3154         case R_CRIS_32_GOTPLT:
3155           if (dynobj == NULL)
3156             {
3157               elf_hash_table (info)->dynobj = dynobj = abfd;
3158
3159               /* We could handle this if we can get a handle on the
3160                  output bfd in elf_cris_adjust_dynamic_symbol.  Failing
3161                  that, we must insist on dynobj being a specific mach.  */
3162               if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
3163                 {
3164                   (*_bfd_error_handler)
3165                     (_("%B, section %A:\n  v10/v32 compatible object %s"
3166                        " must not contain a PIC relocation"),
3167                      abfd, sec);
3168                   return FALSE;
3169                 }
3170
3171               /* Create the .got section, so we can assume it's always
3172                  present whenever there's a dynobj.  */
3173               if (!_bfd_elf_create_got_section (dynobj, info))
3174                 return FALSE;
3175             }
3176
3177           if (sgot == NULL)
3178             sgot = bfd_get_section_by_name (dynobj, ".got");
3179
3180           if (local_got_refcounts == NULL)
3181             {
3182               bfd_size_type amt;
3183
3184               /* We use index local_got_refcounts[-1] to count all
3185                  GOT-relative relocations that do not have explicit
3186                  GOT entries.  */
3187               amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1;
3188               amt *= sizeof (bfd_signed_vma);
3189               local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
3190               if (local_got_refcounts == NULL)
3191                 return FALSE;
3192
3193               local_got_refcounts++;
3194               elf_local_got_refcounts (abfd) = local_got_refcounts;
3195             }
3196           break;
3197
3198         default:
3199           break;
3200         }
3201
3202       /* Some relocs require a global offset table (but perhaps not a
3203          specific GOT entry).  */
3204       switch (r_type)
3205         {
3206         case R_CRIS_16_DTPREL:
3207         case R_CRIS_32_DTPREL:
3208           /* Not requesting .got.rela for an executable: the contents
3209              of the first entry is constant there.  For a shared
3210              library, we need .got.rela for the R_CRIS_DTPMOD
3211              relocation at index 3.  */
3212           if (!info->shared)
3213             break;
3214           /* Fall through.  */
3215
3216         case R_CRIS_32_IE:
3217         case R_CRIS_32_GD:
3218         case R_CRIS_16_GOT_GD:
3219         case R_CRIS_32_GOT_GD:
3220         case R_CRIS_32_GOT_TPREL:
3221         case R_CRIS_16_GOT_TPREL:
3222           /* Fall through.  */
3223
3224           /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT
3225              entry only for local symbols.  Unfortunately, we don't know
3226              until later on if there's a version script that forces the
3227              symbol local.  We must have the .rela.got section in place
3228              before we know if the symbol looks global now, so we need
3229              to treat the reloc just like for R_CRIS_16_GOT and
3230              R_CRIS_32_GOT.  */
3231         case R_CRIS_16_GOTPLT:
3232         case R_CRIS_32_GOTPLT:
3233         case R_CRIS_16_GOT:
3234         case R_CRIS_32_GOT:
3235           if (srelgot == NULL
3236               && (h != NULL || info->shared))
3237             {
3238               srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3239               if (srelgot == NULL)
3240                 {
3241                   srelgot = bfd_make_section_with_flags (dynobj,
3242                                                          ".rela.got",
3243                                                          (SEC_ALLOC
3244                                                           | SEC_LOAD
3245                                                           | SEC_HAS_CONTENTS
3246                                                           | SEC_IN_MEMORY
3247                                                           | SEC_LINKER_CREATED
3248                                                           | SEC_READONLY));
3249                   if (srelgot == NULL
3250                       || !bfd_set_section_alignment (dynobj, srelgot, 2))
3251                     return FALSE;
3252                 }
3253             }
3254           break;
3255
3256         default:
3257           break;
3258         }
3259
3260       /* Warn and error for invalid input.  */
3261       switch (r_type)
3262         {
3263         case R_CRIS_32_IE:
3264         case R_CRIS_32_TPREL:
3265         case R_CRIS_16_TPREL:
3266         case R_CRIS_32_GD:
3267           if (info->shared)
3268             {
3269               (*_bfd_error_handler)
3270                 (_("%B, section %A:\n  relocation %s not valid"
3271                    " in a shared object;"
3272                    " typically an option mixup, recompile with -fPIC"),
3273                  abfd,
3274                  sec,
3275                  cris_elf_howto_table[r_type].name);
3276               /* Don't return FALSE here; we want messages for all of
3277                  these and the error behavior is ungraceful
3278                  anyway.  */
3279             }
3280         default:
3281           break;
3282         }
3283
3284       switch (r_type)
3285         {
3286         case R_CRIS_32_GD:
3287         case R_CRIS_16_GOT_GD:
3288         case R_CRIS_32_GOT_GD:
3289           /* These are requests for tls_index entries, run-time R_CRIS_DTP.  */
3290           got_element_size = 8;
3291           r_symndx_lgot = LGOT_DTP_NDX (r_symndx);
3292           break;
3293
3294         case R_CRIS_16_DTPREL:
3295         case R_CRIS_32_DTPREL:
3296           /* These two just request for the constant-index
3297              module-local tls_index-sized GOT entry, which we add
3298              elsewhere.  */
3299           break;
3300
3301         case R_CRIS_32_IE:
3302         case R_CRIS_32_GOT_TPREL:
3303         case R_CRIS_16_GOT_TPREL:
3304           r_symndx_lgot = LGOT_TPREL_NDX (r_symndx);
3305
3306           /* Those relocs also require that a DSO is of type
3307              Initial Exec.  Like other targets, we don't reset this
3308              flag even if the relocs are GC:ed away.  */
3309           if (info->shared)
3310             info->flags |= DF_STATIC_TLS;
3311           break;
3312
3313           /* Let's list the other assembler-generated TLS-relocs too,
3314              just to show that they're not forgotten. */
3315         case R_CRIS_16_TPREL:
3316         case R_CRIS_32_TPREL:
3317         default:
3318           break;
3319         }
3320
3321       switch (r_type)
3322         {
3323         case R_CRIS_16_GOTPLT:
3324         case R_CRIS_32_GOTPLT:
3325           /* Mark that we need a GOT entry if the PLT entry (and its GOT
3326              entry) is eliminated.  We can only do this for a non-local
3327              symbol.  */
3328           if (h != NULL)
3329             {
3330               elf_cris_hash_entry (h)->gotplt_refcount++;
3331               goto handle_gotplt_reloc;
3332             }
3333           /* If h is NULL then this is a local symbol, and we must make a
3334              GOT entry for it, so handle it like a GOT reloc.  */
3335           /* Fall through.  */
3336
3337         case R_CRIS_32_IE:
3338         case R_CRIS_32_GD:
3339         case R_CRIS_16_GOT_GD:
3340         case R_CRIS_32_GOT_GD:
3341         case R_CRIS_32_GOT_TPREL:
3342         case R_CRIS_16_GOT_TPREL:
3343         case R_CRIS_16_GOT:
3344         case R_CRIS_32_GOT:
3345           /* This symbol requires a global offset table entry.  */
3346           if (h != NULL)
3347             {
3348               if (h->got.refcount == 0)
3349                 {
3350                   /* Make sure this symbol is output as a dynamic symbol.  */
3351                   if (h->dynindx == -1)
3352                     {
3353                       if (!bfd_elf_link_record_dynamic_symbol (info, h))
3354                         return FALSE;
3355                     }
3356                 }
3357
3358               /* Update the sum of reloc counts for this symbol.  */
3359               h->got.refcount++;
3360
3361               switch (r_type)
3362                 {
3363                 case R_CRIS_16_GOT:
3364                 case R_CRIS_32_GOT:
3365                   if (elf_cris_hash_entry (h)->reg_got_refcount == 0)
3366                     {
3367                       /* Allocate space in the .got section.  */
3368                       sgot->size += got_element_size;
3369                       /* Allocate relocation space.  */
3370                       srelgot->size += sizeof (Elf32_External_Rela);
3371                     }
3372                   elf_cris_hash_entry (h)->reg_got_refcount++;
3373                   break;
3374
3375                 case R_CRIS_32_GD:
3376                 case R_CRIS_16_GOT_GD:
3377                 case R_CRIS_32_GOT_GD:
3378                   if (elf_cris_hash_entry (h)->dtp_refcount == 0)
3379                     {
3380                       /* Allocate space in the .got section.  */
3381                       sgot->size += got_element_size;
3382                       /* Allocate relocation space.  */
3383                       srelgot->size += sizeof (Elf32_External_Rela);
3384                     }
3385                   elf_cris_hash_entry (h)->dtp_refcount++;
3386                   break;
3387
3388                 case R_CRIS_32_IE:
3389                 case R_CRIS_32_GOT_TPREL:
3390                 case R_CRIS_16_GOT_TPREL:
3391                   if (elf_cris_hash_entry (h)->tprel_refcount == 0)
3392                     {
3393                       /* Allocate space in the .got section.  */
3394                       sgot->size += got_element_size;
3395                       /* Allocate relocation space.  */
3396                       srelgot->size += sizeof (Elf32_External_Rela);
3397                     }
3398                   elf_cris_hash_entry (h)->tprel_refcount++;
3399                   break;
3400
3401                 default:
3402                   BFD_FAIL ();
3403                   break;
3404                 }
3405             }
3406           else
3407             {
3408               /* This is a global offset table entry for a local symbol.  */
3409               if (local_got_refcounts[r_symndx_lgot] == 0)
3410                 {
3411                   sgot->size += got_element_size;
3412                   if (info->shared)
3413                     {
3414                       /* If we are generating a shared object, we need
3415                          to output a R_CRIS_RELATIVE reloc so that the
3416                          dynamic linker can adjust this GOT entry.
3417                          Similarly for non-regular got entries.  */
3418                       srelgot->size += sizeof (Elf32_External_Rela);
3419                     }
3420                 }
3421               /* Update the reloc-specific count.  */
3422               local_got_refcounts[r_symndx_lgot]++;
3423
3424               /* This one is the sum of all the others.  */
3425               local_got_refcounts[r_symndx]++;
3426             }
3427           break;
3428
3429         case R_CRIS_16_DTPREL:
3430         case R_CRIS_32_DTPREL:
3431         case R_CRIS_32_GOTREL:
3432           /* This reference requires a global offset table.
3433              FIXME: The actual refcount isn't used currently; the .got
3434              section can't be removed if there were any references in the
3435              input.  */
3436           local_got_refcounts[-1]++;
3437           break;
3438
3439         handle_gotplt_reloc:
3440
3441         case R_CRIS_32_PLT_GOTREL:
3442           /* This reference requires a global offset table.  */
3443           local_got_refcounts[-1]++;
3444           /* Fall through.  */
3445
3446         case R_CRIS_32_PLT_PCREL:
3447           /* This symbol requires a procedure linkage table entry.  We
3448              actually build the entry in adjust_dynamic_symbol,
3449              because this might be a case of linking PIC code which is
3450              never referenced by a dynamic object, in which case we
3451              don't need to generate a procedure linkage table entry
3452              after all.  */
3453
3454           /* Beware: if we'd check for visibility of the symbol here
3455              (and not marking the need for a PLT when non-visible), we'd
3456              get into trouble with keeping handling consistent with
3457              regards to relocs found before definition and GOTPLT
3458              handling.  Eliminable PLT entries will be dealt with later
3459              anyway.  */
3460           if (h == NULL)
3461             continue;
3462
3463           h->needs_plt = 1;
3464           h->plt.refcount++;
3465           break;
3466
3467         case R_CRIS_8:
3468         case R_CRIS_16:
3469         case R_CRIS_32:
3470           /* Let's help debug shared library creation.  Any of these
3471              relocs *can* be used in shared libs, but pages containing
3472              them cannot be shared, so they're not appropriate for
3473              common use.  Don't warn for sections we don't care about,
3474              such as debug sections or non-constant sections.  We
3475              can't help tables of (global) function pointers, for
3476              example, though they must be emitted in a (writable) data
3477              section to avoid having impure text sections.  */
3478           if (info->shared
3479               && (sec->flags & SEC_ALLOC) != 0
3480               && (sec->flags & SEC_READONLY) != 0)
3481             {
3482               /* FIXME: How do we make this optionally a warning only?  */
3483               (*_bfd_error_handler)
3484                 (_("%B, section %A:\n  relocation %s should not"
3485                    " be used in a shared object; recompile with -fPIC"),
3486                  abfd,
3487                  sec,
3488                  cris_elf_howto_table[r_type].name);
3489             }
3490           if (h != NULL)
3491             {
3492               h->non_got_ref = 1;
3493
3494               /* Make sure a plt entry is created for this symbol if it
3495                  turns out to be a function defined by a dynamic object.  */
3496               if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3497                 h->plt.refcount++;
3498             }
3499
3500           /* If we are creating a shared library and this is not a local
3501              symbol, we need to copy the reloc into the shared library.
3502              However when linking with -Bsymbolic and this is a global
3503              symbol which is defined in an object we are including in the
3504              link (i.e., DEF_REGULAR is set), then we can resolve the
3505              reloc directly.  At this point we have not seen all the input
3506              files, so it is possible that DEF_REGULAR is not set now but
3507              will be set later (it is never cleared).  In case of a weak
3508              definition, DEF_REGULAR may be cleared later by a strong
3509              definition in a shared library.  We account for that
3510              possibility below by storing information in the relocs_copied
3511              field of the hash table entry.  A similar situation occurs
3512              when creating shared libraries and symbol visibility changes
3513              render the symbol local.  */
3514
3515           /* No need to do anything if we're not creating a shared object.  */
3516           if (! info->shared)
3517             break;
3518
3519           /* We don't need to handle relocs into sections not going into
3520              the "real" output.  */
3521           if ((sec->flags & SEC_ALLOC) == 0)
3522             break;
3523
3524           /* We may need to create a reloc section in the dynobj and made room
3525              for this reloc.  */
3526           if (sreloc == NULL)
3527             {
3528               sreloc = _bfd_elf_make_dynamic_reloc_section
3529                 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3530
3531               if (sreloc == NULL)
3532                 return FALSE;
3533             }
3534
3535           if (sec->flags & SEC_READONLY)
3536             info->flags |= DF_TEXTREL;
3537
3538           sreloc->size += sizeof (Elf32_External_Rela);
3539           break;
3540
3541         case R_CRIS_8_PCREL:
3542         case R_CRIS_16_PCREL:
3543         case R_CRIS_32_PCREL:
3544           if (h != NULL)
3545             {
3546               h->non_got_ref = 1;
3547
3548               /* Make sure a plt entry is created for this symbol if it
3549                  turns out to be a function defined by a dynamic object.  */
3550               if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3551                 h->plt.refcount++;
3552             }
3553
3554           /* If we are creating a shared library and this is not a local
3555              symbol, we need to copy the reloc into the shared library.
3556              However when linking with -Bsymbolic and this is a global
3557              symbol which is defined in an object we are including in the
3558              link (i.e., DEF_REGULAR is set), then we can resolve the
3559              reloc directly.  At this point we have not seen all the input
3560              files, so it is possible that DEF_REGULAR is not set now but
3561              will be set later (it is never cleared).  In case of a weak
3562              definition, DEF_REGULAR may be cleared later by a strong
3563              definition in a shared library.  We account for that
3564              possibility below by storing information in the relocs_copied
3565              field of the hash table entry.  A similar situation occurs
3566              when creating shared libraries and symbol visibility changes
3567              render the symbol local.  */
3568
3569           /* No need to do anything if we're not creating a shared object.  */
3570           if (! info->shared)
3571             break;
3572
3573           /* We don't need to handle relocs into sections not going into
3574              the "real" output.  */
3575           if ((sec->flags & SEC_ALLOC) == 0)
3576             break;
3577
3578           /* If the symbol is local, then we know already we can
3579              eliminate the reloc.  */
3580           if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3581             break;
3582
3583           /* If this is with -Bsymbolic and the symbol isn't weak, and
3584              is defined by an ordinary object (the ones we include in
3585              this shared library) then we can also eliminate the
3586              reloc.  See comment above for more eliminable cases which
3587              we can't identify at this time.  */
3588           if (info->symbolic
3589               && h->root.type != bfd_link_hash_defweak
3590               && h->def_regular)
3591             break;
3592
3593           /* We may need to create a reloc section in the dynobj and made room
3594              for this reloc.  */
3595           if (sreloc == NULL)
3596             {
3597               sreloc = _bfd_elf_make_dynamic_reloc_section
3598                 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3599
3600               if (sreloc == NULL)
3601                 return FALSE;
3602             }
3603
3604           sreloc->size += sizeof (Elf32_External_Rela);
3605
3606           /* We count the number of PC relative relocations we have
3607              entered for this symbol, so that we can discard them
3608              again if the symbol is later defined by a regular object.
3609              We know that h is really a pointer to an
3610              elf_cris_link_hash_entry.  */
3611           {
3612             struct elf_cris_link_hash_entry *eh;
3613             struct elf_cris_pcrel_relocs_copied *p;
3614
3615             eh = elf_cris_hash_entry (h);
3616
3617             for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
3618               if (p->section == sreloc)
3619                 break;
3620
3621             if (p == NULL)
3622               {
3623                 p = ((struct elf_cris_pcrel_relocs_copied *)
3624                      bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
3625                 if (p == NULL)
3626                   return FALSE;
3627                 p->next = eh->pcrel_relocs_copied;
3628                 eh->pcrel_relocs_copied = p;
3629                 p->section = sreloc;
3630                 p->count = 0;
3631                 p->r_type = r_type;
3632               }
3633
3634             ++p->count;
3635           }
3636           break;
3637
3638         /* This relocation describes the C++ object vtable hierarchy.
3639            Reconstruct it for later use during GC.  */
3640         case R_CRIS_GNU_VTINHERIT:
3641           if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3642             return FALSE;
3643           break;
3644
3645         /* This relocation describes which C++ vtable entries are actually
3646            used.  Record for later use during GC.  */
3647         case R_CRIS_GNU_VTENTRY:
3648           BFD_ASSERT (h != NULL);
3649           if (h != NULL
3650               && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3651             return FALSE;
3652           break;
3653
3654         case R_CRIS_16_TPREL:
3655         case R_CRIS_32_TPREL:
3656           /* Already warned above, when necessary.  */
3657           break;
3658
3659         default:
3660           /* Other relocs do not appear here.  */
3661           bfd_set_error (bfd_error_bad_value);
3662           return FALSE;
3663         }
3664     }
3665
3666   return TRUE;
3667 }
3668
3669 /* Set the sizes of the dynamic sections.  */
3670
3671 static bfd_boolean
3672 elf_cris_size_dynamic_sections (output_bfd, info)
3673      bfd *output_bfd ATTRIBUTE_UNUSED;
3674      struct bfd_link_info *info;
3675 {
3676   bfd *dynobj;
3677   asection *s;
3678   bfd_boolean plt;
3679   bfd_boolean relocs;
3680
3681   dynobj = elf_hash_table (info)->dynobj;
3682   BFD_ASSERT (dynobj != NULL);
3683
3684   if (elf_hash_table (info)->dynamic_sections_created)
3685     {
3686       /* Set the contents of the .interp section to the interpreter.  */
3687       if (info->executable)
3688         {
3689           s = bfd_get_section_by_name (dynobj, ".interp");
3690           BFD_ASSERT (s != NULL);
3691           s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3692           s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3693         }
3694     }
3695   else
3696     {
3697       /* Adjust all expected GOTPLT uses to use a GOT entry instead.  */
3698       elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3699                                    elf_cris_adjust_gotplt_to_got,
3700                                    (PTR) info);
3701
3702       /* We may have created entries in the .rela.got section.
3703          However, if we are not creating the dynamic sections, we will
3704          not actually use these entries.  Reset the size of .rela.got,
3705          which will cause it to get stripped from the output file
3706          below.  */
3707       s = bfd_get_section_by_name (dynobj, ".rela.got");
3708       if (s != NULL)
3709         s->size = 0;
3710     }
3711
3712   /* If this is a -Bsymbolic shared link, then we need to discard all PC
3713      relative relocs against symbols defined in a regular object.  We
3714      allocated space for them in the check_relocs routine, but we will not
3715      fill them in in the relocate_section routine.  We also discard space
3716      for relocs that have become for local symbols due to symbol
3717      visibility changes.  For programs, we discard space for relocs for
3718      symbols not referenced by any dynamic object.  */
3719   if (info->shared)
3720     elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3721                                  elf_cris_discard_excess_dso_dynamics,
3722                                  (PTR) info);
3723   else
3724     elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3725                                  elf_cris_discard_excess_program_dynamics,
3726                                  (PTR) info);
3727
3728   /* The check_relocs and adjust_dynamic_symbol entry points have
3729      determined the sizes of the various dynamic sections.  Allocate
3730      memory for them.  */
3731   plt = FALSE;
3732   relocs = FALSE;
3733   for (s = dynobj->sections; s != NULL; s = s->next)
3734     {
3735       const char *name;
3736
3737       if ((s->flags & SEC_LINKER_CREATED) == 0)
3738         continue;
3739
3740       /* It's OK to base decisions on the section name, because none
3741          of the dynobj section names depend upon the input files.  */
3742       name = bfd_get_section_name (dynobj, s);
3743
3744       if (strcmp (name, ".plt") == 0)
3745         {
3746           /* Remember whether there is a PLT.  */
3747           plt = s->size != 0;
3748         }
3749       else if (strcmp (name, ".got.plt") == 0)
3750         {
3751           /* The .got.plt contains the .got header as well as the
3752              actual .got.plt contents.  The .got header may contain a
3753              R_CRIS_DTPMOD entry at index 3.  */
3754           s->size += elf_cris_hash_table (info)->dtpmod_refcount != 0
3755             ? 8 : 0;
3756         }
3757       else if (CONST_STRNEQ (name, ".rela"))
3758         {
3759           if (strcmp (name, ".rela.got") == 0
3760               && elf_cris_hash_table (info)->dtpmod_refcount != 0
3761               && info->shared)
3762             s->size += sizeof (Elf32_External_Rela);
3763
3764           if (s->size != 0)
3765             {
3766               /* Remember whether there are any reloc sections other
3767                  than .rela.plt.  */
3768               if (strcmp (name, ".rela.plt") != 0)
3769                   relocs = TRUE;
3770
3771               /* We use the reloc_count field as a counter if we need
3772                  to copy relocs into the output file.  */
3773               s->reloc_count = 0;
3774             }
3775         }
3776       else if (! CONST_STRNEQ (name, ".got")
3777                && strcmp (name, ".dynbss") != 0)
3778         {
3779           /* It's not one of our sections, so don't allocate space.  */
3780           continue;
3781         }
3782
3783       if (s->size == 0)
3784         {
3785           /* If we don't need this section, strip it from the
3786              output file.  This is mostly to handle .rela.bss and
3787              .rela.plt.  We must create both sections in
3788              create_dynamic_sections, because they must be created
3789              before the linker maps input sections to output
3790              sections.  The linker does that before
3791              adjust_dynamic_symbol is called, and it is that
3792              function which decides whether anything needs to go
3793              into these sections.  */
3794           s->flags |= SEC_EXCLUDE;
3795           continue;
3796         }
3797
3798       if ((s->flags & SEC_HAS_CONTENTS) == 0)
3799         continue;
3800
3801       /* Allocate memory for the section contents. We use bfd_zalloc here
3802          in case unused entries are not reclaimed before the section's
3803          contents are written out.  This should not happen, but this way
3804          if it does, we will not write out garbage.  For reloc sections,
3805          this will make entries have the type R_CRIS_NONE.  */
3806       s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3807       if (s->contents == NULL)
3808         return FALSE;
3809     }
3810
3811   if (elf_hash_table (info)->dynamic_sections_created)
3812     {
3813       /* Add some entries to the .dynamic section.  We fill in the
3814          values later, in elf_cris_finish_dynamic_sections, but we
3815          must add the entries now so that we get the correct size for
3816          the .dynamic section.  The DT_DEBUG entry is filled in by the
3817          dynamic linker and used by the debugger.  */
3818 #define add_dynamic_entry(TAG, VAL) \
3819   _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3820
3821       if (!info->shared)
3822         {
3823           if (!add_dynamic_entry (DT_DEBUG, 0))
3824             return FALSE;
3825         }
3826
3827       if (plt)
3828         {
3829           if (!add_dynamic_entry (DT_PLTGOT, 0)
3830               || !add_dynamic_entry (DT_PLTRELSZ, 0)
3831               || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3832               || !add_dynamic_entry (DT_JMPREL, 0))
3833             return FALSE;
3834         }
3835
3836       if (relocs)
3837         {
3838           if (!add_dynamic_entry (DT_RELA, 0)
3839               || !add_dynamic_entry (DT_RELASZ, 0)
3840               || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3841             return FALSE;
3842         }
3843
3844       if ((info->flags & DF_TEXTREL) != 0)
3845         {
3846           if (!add_dynamic_entry (DT_TEXTREL, 0))
3847             return FALSE;
3848           info->flags |= DF_TEXTREL;
3849         }
3850     }
3851 #undef add_dynamic_entry
3852
3853   return TRUE;
3854 }
3855
3856 /* This function is called via elf_cris_link_hash_traverse if we are
3857    creating a shared object.  In the -Bsymbolic case, it discards the
3858    space allocated to copy PC relative relocs against symbols which
3859    are defined in regular objects.  For the normal non-symbolic case,
3860    we also discard space for relocs that have become local due to
3861    symbol visibility changes.  We allocated space for them in the
3862    check_relocs routine, but we won't fill them in in the
3863    relocate_section routine.  */
3864
3865 static bfd_boolean
3866 elf_cris_discard_excess_dso_dynamics (h, inf)
3867      struct elf_cris_link_hash_entry *h;
3868      PTR inf;
3869 {
3870   struct elf_cris_pcrel_relocs_copied *s;
3871   struct bfd_link_info *info = (struct bfd_link_info *) inf;
3872
3873   if (h->root.root.type == bfd_link_hash_warning)
3874     h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3875
3876   /* If a symbol has been forced local or we have found a regular
3877      definition for the symbolic link case, then we won't be needing
3878      any relocs.  */
3879   if (h->root.def_regular
3880       && (h->root.forced_local
3881           || info->symbolic))
3882     {
3883       for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3884         s->section->size -= s->count * sizeof (Elf32_External_Rela);
3885
3886       return TRUE;
3887     }
3888
3889   /* If we have accounted for PC-relative relocs for read-only
3890      sections, now is the time to warn for them.  We can't do it in
3891      cris_elf_check_relocs, because we don't know the status of all
3892      symbols at that time (and it's common to force symbols local
3893      late).  */
3894
3895   for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3896     {
3897       BFD_ASSERT ((s->section->flags & SEC_READONLY) != 0);
3898
3899       /* FIXME: How do we make this optionally a warning only?  */
3900       (*_bfd_error_handler)
3901         (_("%B, section `%A', to symbol `%s':\n"
3902            "  relocation %s should not be used"
3903            " in a shared object; recompile with -fPIC"),
3904          s->section->owner,
3905          s->section,
3906          h->root.root.root.string,
3907          cris_elf_howto_table[s->r_type].name);
3908
3909       info->flags |= DF_TEXTREL;
3910     }
3911
3912   return TRUE;
3913 }
3914
3915 /* This function is called via elf_cris_link_hash_traverse if we are *not*
3916    creating a shared object.  We discard space for relocs for symbols put
3917    in the .got, but which we found we do not have to resolve at run-time.  */
3918
3919 static bfd_boolean
3920 elf_cris_discard_excess_program_dynamics (h, inf)
3921      struct elf_cris_link_hash_entry *h;
3922      PTR inf;
3923 {
3924   struct bfd_link_info *info = (struct bfd_link_info *) inf;
3925
3926   if (h->root.root.type == bfd_link_hash_warning)
3927     h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3928
3929   /* If we're not creating a shared library and have a symbol which is
3930      referred to by .got references, but the symbol is defined locally,
3931      (or rather, not defined by a DSO) then lose the reloc for the .got
3932      (don't allocate room for it).  Likewise for relocs for something
3933      for which we create a PLT.  */
3934   if (!h->root.def_dynamic
3935       || h->root.plt.refcount > 0)
3936     {
3937       if (h->reg_got_refcount > 0
3938           /* The size of this section is only valid and in sync with the
3939              various reference counts if we do dynamic; don't decrement it
3940              otherwise.  */
3941           && elf_hash_table (info)->dynamic_sections_created)
3942         {
3943           bfd *dynobj = elf_hash_table (info)->dynobj;
3944           asection *srelgot;
3945
3946           BFD_ASSERT (dynobj != NULL);
3947
3948           srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3949
3950           BFD_ASSERT (srelgot != NULL);
3951
3952           srelgot->size -= sizeof (Elf32_External_Rela);
3953         }
3954
3955       /* If the locally-defined symbol isn't used by a DSO, then we don't
3956          have to export it as a dynamic symbol.  This was already done for
3957          functions; doing this for all symbols would presumably not
3958          introduce new problems.  Of course we don't do this if we're
3959          exporting all dynamic symbols.  */
3960       if (! info->export_dynamic
3961           && h->root.dynindx != -1
3962           && !h->root.def_dynamic
3963           && !h->root.ref_dynamic)
3964         {
3965           h->root.dynindx = -1;
3966           _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3967                                   h->root.dynstr_index);
3968         }
3969     }
3970
3971   return TRUE;
3972 }
3973
3974 /* Reject a file depending on presence and expectation of prefixed
3975    underscores on symbols.  */
3976
3977 static bfd_boolean
3978 cris_elf_object_p (abfd)
3979      bfd *abfd;
3980 {
3981   if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
3982     return FALSE;
3983
3984   if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
3985     return (bfd_get_symbol_leading_char (abfd) == '_');
3986   else
3987     return (bfd_get_symbol_leading_char (abfd) == 0);
3988 }
3989
3990 /* Mark presence or absence of leading underscore.  Set machine type
3991    flags from mach type.  */
3992
3993 static void
3994 cris_elf_final_write_processing (abfd, linker)
3995      bfd *abfd;
3996      bfd_boolean linker ATTRIBUTE_UNUSED;
3997 {
3998   unsigned long e_flags = elf_elfheader (abfd)->e_flags;
3999
4000   e_flags &= ~EF_CRIS_UNDERSCORE;
4001   if (bfd_get_symbol_leading_char (abfd) == '_')
4002     e_flags |= EF_CRIS_UNDERSCORE;
4003
4004   switch (bfd_get_mach (abfd))
4005     {
4006     case bfd_mach_cris_v0_v10:
4007       e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
4008       break;
4009
4010     case bfd_mach_cris_v10_v32:
4011       e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
4012       break;
4013
4014     case bfd_mach_cris_v32:
4015       e_flags |= EF_CRIS_VARIANT_V32;
4016       break;
4017
4018     default:
4019       _bfd_abort (__FILE__, __LINE__,
4020                   _("Unexpected machine number"));
4021     }
4022
4023   elf_elfheader (abfd)->e_flags = e_flags;
4024 }
4025
4026 /* Set the mach type from e_flags value.  */
4027
4028 static bfd_boolean
4029 cris_elf_set_mach_from_flags (abfd, flags)
4030      bfd *abfd;
4031      unsigned long flags;
4032 {
4033   switch (flags & EF_CRIS_VARIANT_MASK)
4034     {
4035     case EF_CRIS_VARIANT_ANY_V0_V10:
4036       bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
4037       break;
4038
4039     case EF_CRIS_VARIANT_V32:
4040       bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
4041       break;
4042
4043     case EF_CRIS_VARIANT_COMMON_V10_V32:
4044       bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
4045       break;
4046
4047     default:
4048       /* Since we don't recognize them, we obviously can't support them
4049          with this code; we'd have to require that all future handling
4050          would be optional.  */
4051       bfd_set_error (bfd_error_wrong_format);
4052       return FALSE;
4053     }
4054
4055   return TRUE;
4056 }
4057
4058 /* Display the flags field.  */
4059
4060 static bfd_boolean
4061 cris_elf_print_private_bfd_data (abfd, ptr)
4062      bfd *abfd;
4063      PTR ptr;
4064 {
4065   FILE *file = (FILE *) ptr;
4066
4067   BFD_ASSERT (abfd != NULL && ptr != NULL);
4068
4069   _bfd_elf_print_private_bfd_data (abfd, ptr);
4070
4071   fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
4072
4073   if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
4074     fprintf (file, _(" [symbols have a _ prefix]"));
4075   if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4076       == EF_CRIS_VARIANT_COMMON_V10_V32)
4077     fprintf (file, _(" [v10 and v32]"));
4078   if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4079       == EF_CRIS_VARIANT_V32)
4080     fprintf (file, _(" [v32]"));
4081
4082   fputc ('\n', file);
4083   return TRUE;
4084 }
4085
4086 /* Don't mix files with and without a leading underscore.  */
4087
4088 static bfd_boolean
4089 cris_elf_merge_private_bfd_data (ibfd, obfd)
4090      bfd *ibfd;
4091      bfd *obfd;
4092 {
4093   int imach, omach;
4094
4095   if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4096     return FALSE;
4097
4098   if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4099       || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4100     return TRUE;
4101
4102   imach = bfd_get_mach (ibfd);
4103
4104   if (! elf_flags_init (obfd))
4105     {
4106       /* This happens when ld starts out with a 'blank' output file.  */
4107       elf_flags_init (obfd) = TRUE;
4108
4109       /* We ignore the linker-set mach, and instead set it according to
4110          the first input file.  This would also happen if we could
4111          somehow filter out the OUTPUT_ARCH () setting from elf.sc.
4112          This allows us to keep the same linker config across
4113          cris(v0..v10) and crisv32.  The drawback is that we can't force
4114          the output type, which might be a sane thing to do for a
4115          v10+v32 compatibility object.  */
4116       if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4117         return FALSE;
4118     }
4119
4120   if (bfd_get_symbol_leading_char (ibfd)
4121       != bfd_get_symbol_leading_char (obfd))
4122     {
4123       (*_bfd_error_handler)
4124         (bfd_get_symbol_leading_char (ibfd) == '_'
4125          ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
4126          : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
4127          ibfd);
4128       bfd_set_error (bfd_error_bad_value);
4129       return FALSE;
4130     }
4131
4132   omach = bfd_get_mach (obfd);
4133
4134   if (imach != omach)
4135     {
4136       /* We can get an incompatible combination only if either is
4137          bfd_mach_cris_v32, and the other one isn't compatible.  */
4138       if ((imach == bfd_mach_cris_v32
4139            && omach != bfd_mach_cris_v10_v32)
4140           || (omach == bfd_mach_cris_v32
4141               && imach != bfd_mach_cris_v10_v32))
4142         {
4143           (*_bfd_error_handler)
4144             ((imach == bfd_mach_cris_v32)
4145              ? _("%B contains CRIS v32 code, incompatible"
4146                  " with previous objects")
4147              : _("%B contains non-CRIS-v32 code, incompatible"
4148                  " with previous objects"),
4149              ibfd);
4150           bfd_set_error (bfd_error_bad_value);
4151           return FALSE;
4152         }
4153
4154       /* We don't have to check the case where the input is compatible
4155          with v10 and v32, because the output is already known to be set
4156          to the other (compatible) mach.  */
4157       if (omach == bfd_mach_cris_v10_v32
4158           && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4159         return FALSE;
4160     }
4161
4162   return TRUE;
4163 }
4164
4165 /* Do side-effects of e_flags copying to obfd.  */
4166
4167 static bfd_boolean
4168 cris_elf_copy_private_bfd_data (ibfd, obfd)
4169      bfd *ibfd;
4170      bfd *obfd;
4171 {
4172   /* Call the base function.  */
4173   if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
4174     return FALSE;
4175
4176   /* If output is big-endian for some obscure reason, stop here.  */
4177   if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
4178     return FALSE;
4179
4180   if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4181       || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4182     return TRUE;
4183
4184   /* Do what we really came here for.  */
4185   return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
4186 }
4187
4188 static enum elf_reloc_type_class
4189 elf_cris_reloc_type_class (rela)
4190      const Elf_Internal_Rela *rela;
4191 {
4192   enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info);
4193   switch (r_type)
4194     {
4195     case R_CRIS_RELATIVE:
4196       return reloc_class_relative;
4197     case R_CRIS_JUMP_SLOT:
4198       return reloc_class_plt;
4199     case R_CRIS_COPY:
4200       return reloc_class_copy;
4201     default:
4202       return reloc_class_normal;
4203     }
4204 }
4205
4206 /* The elf_backend_got_elt_size worker.  For one symbol, we can have up to
4207    two GOT entries from three types with two different sizes.  We handle
4208    it as a single entry, so we can use the regular offset-calculation
4209    machinery.  */
4210
4211 static bfd_vma
4212 elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED,
4213                        struct bfd_link_info *info ATTRIBUTE_UNUSED,
4214                        struct elf_link_hash_entry *hr,
4215                        bfd *ibfd,
4216                        unsigned long symndx)
4217 {
4218   struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr;
4219   bfd_vma eltsiz = 0;
4220
4221   /* We may have one regular GOT entry or up to two TLS GOT
4222      entries.  */
4223   if (h == NULL)
4224     {
4225       Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4226       bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd);
4227
4228       BFD_ASSERT (local_got_refcounts != NULL);
4229
4230       if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0)
4231         {
4232           /* We can't have a variable referred to both as a regular
4233              variable and through TLS relocs.  */
4234           BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0
4235                       && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0);
4236           return 4;
4237         }
4238
4239       if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0)
4240         eltsiz += 8;
4241
4242       if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0)
4243         eltsiz += 4;
4244     }
4245   else
4246     {
4247       struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h);
4248       if (hh->reg_got_refcount > 0)
4249         {
4250           /* The actual error-on-input is emitted elsewhere.  */
4251           BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0);
4252           return 4;
4253         }
4254
4255       if (hh->dtp_refcount > 0)
4256         eltsiz += 8;
4257
4258       if (hh->tprel_refcount > 0)
4259         eltsiz += 4;
4260     }
4261
4262   /* We're only called when h->got.refcount is non-zero, so we must
4263      have a non-zero size.  */
4264   BFD_ASSERT (eltsiz != 0);
4265   return eltsiz;
4266 }
4267 \f
4268 #define ELF_ARCH                bfd_arch_cris
4269 #define ELF_MACHINE_CODE        EM_CRIS
4270 #define ELF_MAXPAGESIZE         0x2000
4271
4272 #define TARGET_LITTLE_SYM       bfd_elf32_cris_vec
4273 #define TARGET_LITTLE_NAME      "elf32-cris"
4274 #define elf_symbol_leading_char 0
4275
4276 #define elf_info_to_howto_rel                   NULL
4277 #define elf_info_to_howto                       cris_info_to_howto_rela
4278 #define elf_backend_relocate_section            cris_elf_relocate_section
4279 #define elf_backend_gc_mark_hook                cris_elf_gc_mark_hook
4280 #define elf_backend_gc_sweep_hook               cris_elf_gc_sweep_hook
4281 #define elf_backend_check_relocs                cris_elf_check_relocs
4282 #define elf_backend_grok_prstatus               cris_elf_grok_prstatus
4283 #define elf_backend_grok_psinfo                 cris_elf_grok_psinfo
4284
4285 #define elf_backend_can_gc_sections             1
4286 #define elf_backend_can_refcount                1
4287
4288 #define elf_backend_object_p                    cris_elf_object_p
4289 #define elf_backend_final_write_processing \
4290         cris_elf_final_write_processing
4291 #define bfd_elf32_bfd_print_private_bfd_data \
4292         cris_elf_print_private_bfd_data
4293 #define bfd_elf32_bfd_merge_private_bfd_data \
4294         cris_elf_merge_private_bfd_data
4295 #define bfd_elf32_bfd_copy_private_bfd_data \
4296         cris_elf_copy_private_bfd_data
4297
4298 #define bfd_elf32_bfd_reloc_type_lookup         cris_reloc_type_lookup
4299 #define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
4300
4301 #define bfd_elf32_bfd_link_hash_table_create \
4302         elf_cris_link_hash_table_create
4303 #define elf_backend_adjust_dynamic_symbol \
4304         elf_cris_adjust_dynamic_symbol
4305 #define elf_backend_copy_indirect_symbol \
4306         elf_cris_copy_indirect_symbol
4307 #define elf_backend_size_dynamic_sections \
4308         elf_cris_size_dynamic_sections
4309 #define elf_backend_init_index_section          _bfd_elf_init_1_index_section
4310 #define elf_backend_finish_dynamic_symbol \
4311         elf_cris_finish_dynamic_symbol
4312 #define elf_backend_finish_dynamic_sections \
4313         elf_cris_finish_dynamic_sections
4314 #define elf_backend_create_dynamic_sections \
4315         _bfd_elf_create_dynamic_sections
4316 #define bfd_elf32_bfd_final_link \
4317         bfd_elf_gc_common_final_link
4318 #define elf_backend_hide_symbol                 elf_cris_hide_symbol
4319 #define elf_backend_reloc_type_class            elf_cris_reloc_type_class
4320
4321 #define elf_backend_want_got_plt        1
4322 #define elf_backend_plt_readonly        1
4323 #define elf_backend_want_plt_sym        0
4324 #define elf_backend_got_header_size     12
4325 #define elf_backend_got_elt_size elf_cris_got_elt_size
4326
4327 /* Later, we my want to optimize RELA entries into REL entries for dynamic
4328    linking and libraries (if it's a win of any significance).  Until then,
4329    take the easy route.  */
4330 #define elf_backend_may_use_rel_p 0
4331 #define elf_backend_may_use_rela_p 1
4332 #define elf_backend_rela_normal         1
4333
4334 #include "elf32-target.h"
4335
4336 #undef TARGET_LITTLE_SYM
4337 #undef TARGET_LITTLE_NAME
4338 #undef elf_symbol_leading_char
4339
4340 #define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
4341 #define TARGET_LITTLE_NAME "elf32-us-cris"
4342 #define elf_symbol_leading_char '_'
4343 #undef elf32_bed
4344 #define elf32_bed elf32_us_cris_bed
4345
4346 #include "elf32-target.h"